diff --git a/adb/Android.bp b/adb/Android.bp
index 3685687..bccc71a 100644
--- a/adb/Android.bp
+++ b/adb/Android.bp
@@ -142,6 +142,8 @@
         "client/fastdeploycallbacks.cpp",
     ],
 
+    generated_headers: ["platform_tools_version"],
+
     target: {
         linux: {
             srcs: ["client/usb_linux.cpp"],
@@ -172,12 +174,6 @@
         "libdiagnose_usb",
         "libmdnssd",
         "libusb",
-        "libandroidfw",
-        "libziparchive",
-        "libz",
-        "libutils",
-        "liblog",
-        "libcutils",
     ],
 }
 
@@ -260,12 +256,6 @@
         "liblog",
         "libmdnssd",
         "libusb",
-        "libandroidfw",
-        "libziparchive",
-        "libz",
-        "libutils",
-        "liblog",
-        "libcutils",
     ],
 
     stl: "libc++_static",
@@ -275,6 +265,10 @@
     // will violate ODR
     shared_libs: [],
 
+    required: [
+        "deploypatchgenerator",
+    ],
+
     target: {
         darwin: {
             cflags: [
@@ -311,6 +305,8 @@
         "daemon/include",
     ],
 
+    generated_headers: ["platform_tools_version"],
+
     static_libs: [
         "libdiagnose_usb",
         "libqemu_pipe",
@@ -353,10 +349,6 @@
         "libavb_user",
         "libdiagnose_usb",
         "libqemu_pipe",
-
-        // `daemon/shell_service.cpp` uses selinux_android_setcon(), which is not exposed by
-        // libselinux.
-        "libselinux",
     ],
 
     shared_libs: [
@@ -371,6 +363,7 @@
         "libfs_mgr",
         "liblog",
         "libmdnssd",
+        "libselinux",
     ],
 }
 
diff --git a/adb/adb.cpp b/adb/adb.cpp
index 8e028f4..62e8908 100644
--- a/adb/adb.cpp
+++ b/adb/adb.cpp
@@ -45,6 +45,7 @@
 #include <android-base/stringprintf.h>
 #include <android-base/strings.h>
 #include <build/version.h>
+#include <platform_tools_version.h>
 
 #include "adb_auth.h"
 #include "adb_io.h"
@@ -65,10 +66,11 @@
     // Don't change the format of this --- it's parsed by ddmlib.
     return android::base::StringPrintf(
         "Android Debug Bridge version %d.%d.%d\n"
-        "Version %s\n"
+        "Version %s-%s\n"
         "Installed as %s\n",
         ADB_VERSION_MAJOR, ADB_VERSION_MINOR, ADB_SERVER_VERSION,
-        android::build::GetBuildNumber().c_str(), android::base::GetExecutablePath().c_str());
+        PLATFORM_TOOLS_VERSION, android::build::GetBuildNumber().c_str(),
+        android::base::GetExecutablePath().c_str());
 }
 
 void fatal(const char *fmt, ...) {
@@ -631,11 +633,11 @@
     fprintf(stderr, "Full server startup log: %s\n", GetLogFilePath().c_str());
     fprintf(stderr, "Server had pid: %d\n", pid);
 
-    unique_fd fd(adb_open(GetLogFilePath().c_str(), O_RDONLY));
+    android::base::unique_fd fd(unix_open(GetLogFilePath().c_str(), O_RDONLY));
     if (fd == -1) return;
 
     // Let's not show more than 128KiB of log...
-    adb_lseek(fd, -128 * 1024, SEEK_END);
+    unix_lseek(fd, -128 * 1024, SEEK_END);
     std::string content;
     if (!android::base::ReadFdToString(fd, &content)) return;
 
@@ -825,7 +827,7 @@
                 memcmp(temp, expected, expected_length) == 0) {
                 got_ack = true;
             } else {
-                ReportServerStartupFailure(GetProcessId(process_handle.get()));
+                ReportServerStartupFailure(pinfo.dwProcessId);
                 return -1;
             }
         } else {
diff --git a/adb/adb_utils.cpp b/adb/adb_utils.cpp
index ffac315..35017f0 100644
--- a/adb/adb_utils.cpp
+++ b/adb/adb_utils.cpp
@@ -49,9 +49,9 @@
 
 
 #if defined(_WIN32)
-constexpr char kNullFileName[] = "NUL";
+static constexpr char kNullFileName[] = "NUL";
 #else
-constexpr char kNullFileName[] = "/dev/null";
+static constexpr char kNullFileName[] = "/dev/null";
 #endif
 
 void close_stdin() {
diff --git a/adb/adb_utils.h b/adb/adb_utils.h
index f764a0e..f6ce8e2 100644
--- a/adb/adb_utils.h
+++ b/adb/adb_utils.h
@@ -24,7 +24,7 @@
 
 #include <android-base/macros.h>
 
-int syntax_error(const char*, ...);
+int syntax_error(const char*, ...) __attribute__((__format__(__printf__, 1, 2)));
 
 void close_stdin();
 
diff --git a/adb/client/adb_client.cpp b/adb/client/adb_client.cpp
index 1959258..eda4b77 100644
--- a/adb/client/adb_client.cpp
+++ b/adb/client/adb_client.cpp
@@ -185,6 +185,11 @@
         return false;
     }
 
+    // The server might send OKAY, so consume that.
+    char buf[4];
+    ReadFdExactly(fd, buf, 4);
+    // Now that no more data is expected, wait for socket orderly shutdown or error, indicating
+    // server death.
     ReadOrderlyShutdown(fd);
     return true;
 }
diff --git a/adb/client/adb_install.cpp b/adb/client/adb_install.cpp
index 95574ed..c00d955 100644
--- a/adb/client/adb_install.cpp
+++ b/adb/client/adb_install.cpp
@@ -40,6 +40,8 @@
 #include <android-base/strings.h>
 #include <android-base/test_utils.h>
 
+static constexpr int kFastDeployMinApi = 24;
+
 static bool _use_legacy_install() {
     FeatureSet features;
     std::string error;
@@ -130,7 +132,7 @@
 }
 
 static int install_app_streamed(int argc, const char** argv, bool use_fastdeploy,
-                                bool use_localagent, const char* adb_path) {
+                                bool use_localagent) {
     printf("Performing Streamed Install\n");
 
     // The last argument must be the APK file
@@ -152,8 +154,7 @@
             printf("failed to extract metadata %d\n", metadata_len);
             return 1;
         } else {
-            int create_patch_result = create_patch(file, metadataTmpFile.path, patchTmpFile.path,
-                                                   use_localagent, adb_path);
+            int create_patch_result = create_patch(file, metadataTmpFile.path, patchTmpFile.path);
             if (create_patch_result != 0) {
                 printf("Patch creation failure, error code: %d\n", create_patch_result);
                 result = create_patch_result;
@@ -176,7 +177,9 @@
         }
 
     cleanup_streamed_apk:
-        delete_device_patch_file(file);
+        if (use_fastdeploy == true) {
+            delete_device_patch_file(file);
+        }
         return result;
     } else {
         struct stat sb;
@@ -226,8 +229,8 @@
     }
 }
 
-static int install_app_legacy(int argc, const char** argv, bool use_fastdeploy, bool use_localagent,
-                              const char* adb_path) {
+static int install_app_legacy(int argc, const char** argv, bool use_fastdeploy,
+                              bool use_localagent) {
     static const char* const DATA_DEST = "/data/local/tmp/%s";
     static const char* const SD_DEST = "/sdcard/tmp/%s";
     const char* where = DATA_DEST;
@@ -257,10 +260,10 @@
     std::string apk_dest =
             android::base::StringPrintf(where, android::base::Basename(argv[last_apk]).c_str());
 
-    TemporaryFile metadataTmpFile;
-    TemporaryFile patchTmpFile;
-
     if (use_fastdeploy == true) {
+        TemporaryFile metadataTmpFile;
+        TemporaryFile patchTmpFile;
+
         FILE* metadataFile = fopen(metadataTmpFile.path, "wb");
         int metadata_len = extract_metadata(apk_file[0], metadataFile);
         fclose(metadataFile);
@@ -269,8 +272,8 @@
             printf("failed to extract metadata %d\n", metadata_len);
             return 1;
         } else {
-            int create_patch_result = create_patch(apk_file[0], metadataTmpFile.path,
-                                                   patchTmpFile.path, use_localagent, adb_path);
+            int create_patch_result =
+                    create_patch(apk_file[0], metadataTmpFile.path, patchTmpFile.path);
             if (create_patch_result != 0) {
                 printf("Patch creation failure, error code: %d\n", create_patch_result);
                 result = create_patch_result;
@@ -293,7 +296,9 @@
     result = pm_command(argc, argv);
 
 cleanup_apk:
-    delete_device_patch_file(apk_file[0]);
+    if (use_fastdeploy == true) {
+        delete_device_patch_file(apk_file[0]);
+    }
     delete_device_file(apk_dest);
     return result;
 }
@@ -327,9 +332,6 @@
         } else if (!strcmp(argv[i], "--no-fastdeploy")) {
             processedArgIndicies.push_back(i);
             use_fastdeploy = false;
-        } else if (!strcmp(argv[i], "-f")) {
-            processedArgIndicies.push_back(i);
-            use_fastdeploy = true;
         } else if (!strcmp(argv[i], "--force-agent")) {
             processedArgIndicies.push_back(i);
             agent_update_strategy = FastDeploy_AgentUpdateAlways;
@@ -380,27 +382,18 @@
         }
     }
 
-    std::string adb_path = android::base::GetExecutablePath();
-
-    if (adb_path.length() == 0) {
-        return 1;
-    }
     if (use_fastdeploy == true) {
-        bool agent_up_to_date =
-                update_agent(agent_update_strategy, use_localagent, adb_path.c_str());
-        if (agent_up_to_date == false) {
-            printf("Failed to update agent, exiting\n");
-            return 1;
-        }
+        fastdeploy_set_local_agent(use_localagent);
+        update_agent(agent_update_strategy);
     }
 
     switch (installMode) {
         case INSTALL_PUSH:
             return install_app_legacy(passthrough_argv.size(), passthrough_argv.data(),
-                                      use_fastdeploy, use_localagent, adb_path.c_str());
+                                      use_fastdeploy, use_localagent);
         case INSTALL_STREAM:
             return install_app_streamed(passthrough_argv.size(), passthrough_argv.data(),
-                                        use_fastdeploy, use_localagent, adb_path.c_str());
+                                        use_fastdeploy, use_localagent);
         case INSTALL_DEFAULT:
         default:
             return 1;
@@ -536,19 +529,3 @@
     std::string cmd = "rm -f " + escape_arg(filename);
     return send_shell_command(cmd);
 }
-
-int delete_host_file(const std::string& filename) {
-#ifdef _WIN32
-    BOOL delete_return = DeleteFileA(filename.c_str());
-    if (delete_return != 0) {
-        return 0;
-    } else {
-        DWORD last_error = GetLastError();
-        printf("Error [%ld] deleting: %s\n", last_error, filename.c_str());
-        return delete_return;
-    }
-#else
-    std::string cmd = "rm -f " + escape_arg(filename);
-    return system(cmd.c_str());
-#endif
-}
diff --git a/adb/client/commandline.cpp b/adb/client/commandline.cpp
index b55ae95..6e143c1 100644
--- a/adb/client/commandline.cpp
+++ b/adb/client/commandline.cpp
@@ -130,7 +130,7 @@
         " pull [-a] REMOTE... LOCAL\n"
         "     copy files/dirs from device\n"
         "     -a: preserve file timestamp and mode\n"
-        " sync [all|data|odm|oem|product|system|vendor]\n"
+        " sync [all|data|odm|oem|product_services|product|system|vendor]\n"
         "     sync a local build from $ANDROID_PRODUCT_OUT to the device (default all)\n"
         "     -l: list but don't copy\n"
         "\n"
@@ -158,7 +158,7 @@
         "     --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"
-        "     -f/--fastdeploy: use fast deploy (only valid with -r)\n"
+        "     --fastdeploy: use fast deploy (only valid with -r)\n"
         "     --no-fastdeploy: prevent use of fast deploy (only valid with -r)\n"
         "     --force-agent: force update of deployment agent when using fast deploy\n"
         "     --date-check-agent: update deployment agent when local version is newer and using fast deploy\n"
@@ -354,8 +354,7 @@
 }
 
 void copy_to_file(int inFd, int outFd) {
-    constexpr size_t BUFSIZE = 32 * 1024;
-    std::vector<char> buf(BUFSIZE);
+    std::vector<char> buf(32 * 1024);
     int len;
     long total = 0;
     int old_stdin_mode = -1;
@@ -367,9 +366,9 @@
 
     while (true) {
         if (inFd == STDIN_FILENO) {
-            len = unix_read(inFd, buf.data(), BUFSIZE);
+            len = unix_read(inFd, buf.data(), buf.size());
         } else {
-            len = adb_read(inFd, buf.data(), BUFSIZE);
+            len = adb_read(inFd, buf.data(), buf.size());
         }
         if (len == 0) {
             D("copy_to_file() : read 0 bytes; exiting");
@@ -1713,7 +1712,8 @@
         }
 
         if (src.empty()) src = "all";
-        std::vector<std::string> partitions{"data", "odm", "oem", "product", "system", "vendor"};
+        std::vector<std::string> partitions{"data",   "odm",   "oem", "product", "product_services",
+                                            "system", "vendor"};
         bool found = false;
         for (const auto& partition : partitions) {
             if (src == "all" || src == partition) {
diff --git a/adb/client/fastdeploy.cpp b/adb/client/fastdeploy.cpp
index fda3889..d3f35c8 100644
--- a/adb/client/fastdeploy.cpp
+++ b/adb/client/fastdeploy.cpp
@@ -14,26 +14,29 @@
  * limitations under the License.
  */
 
-#include <androidfw/ResourceTypes.h>
-#include <androidfw/ZipFileRO.h>
 #include <libgen.h>
 #include <algorithm>
+#include <array>
 
+#include "android-base/file.h"
+#include "android-base/strings.h"
 #include "client/file_sync_client.h"
 #include "commandline.h"
 #include "fastdeploy.h"
 #include "fastdeploycallbacks.h"
 #include "utils/String16.h"
 
-const long kRequiredAgentVersion = 0x00000001;
+static constexpr long kRequiredAgentVersion = 0x00000001;
 
-const char* kDeviceAgentPath = "/data/local/tmp/";
+static constexpr const char* kDeviceAgentPath = "/data/local/tmp/";
+
+static bool g_use_localagent = false;
 
 long get_agent_version() {
     std::vector<char> versionOutputBuffer;
     std::vector<char> versionErrorBuffer;
 
-    int statusCode = capture_shell_command("/data/local/tmp/deployagent.sh version",
+    int statusCode = capture_shell_command("/data/local/tmp/deployagent version",
                                            &versionOutputBuffer, &versionErrorBuffer);
     long version = -1;
 
@@ -58,75 +61,62 @@
     return api_level;
 }
 
-// local_path - must start with a '/' and be relative to $ANDROID_PRODUCT_OUT
-static bool get_agent_component_host_path(bool use_localagent, const char* adb_path,
-                                          const char* local_path, const char* sdk_path,
-                                          std::string* output_path) {
-    std::string mutable_adb_path = adb_path;
-    const char* adb_dir = dirname(&mutable_adb_path[0]);
-    if (adb_dir == nullptr) {
-        return false;
-    }
-
-    if (use_localagent) {
-        const char* product_out = getenv("ANDROID_PRODUCT_OUT");
-        if (product_out == nullptr) {
-            return false;
-        }
-        *output_path = android::base::StringPrintf("%s%s", product_out, local_path);
-        return true;
-    } else {
-        *output_path = android::base::StringPrintf("%s%s", adb_dir, sdk_path);
-        return true;
-    }
-    return false;
+void fastdeploy_set_local_agent(bool use_localagent) {
+    g_use_localagent = use_localagent;
 }
 
-static bool deploy_agent(bool checkTimeStamps, bool use_localagent, const char* adb_path) {
+// 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()) {
+        fatal("Could not determine location of adb!");
+    }
+
+    if (g_use_localagent) {
+        const char* product_out = getenv("ANDROID_PRODUCT_OUT");
+        if (product_out == nullptr) {
+            fatal("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) {
     std::vector<const char*> srcs;
-
-    std::string agent_jar_path;
-    if (get_agent_component_host_path(use_localagent, adb_path, "/system/framework/deployagent.jar",
-                                      "/deployagent.jar", &agent_jar_path)) {
-        srcs.push_back(agent_jar_path.c_str());
-    } else {
-        return false;
-    }
-
-    std::string agent_sh_path;
-    if (get_agent_component_host_path(use_localagent, adb_path, "/system/bin/deployagent.sh",
-                                      "/deployagent.sh", &agent_sh_path)) {
-        srcs.push_back(agent_sh_path.c_str());
-    } else {
-        return false;
-    }
+    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());
 
     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.sh";
+        const char* kChmodCommandPattern = "chmod 777 %sdeployagent";
         std::string chmodCommand =
                 android::base::StringPrintf(kChmodCommandPattern, kDeviceAgentPath);
         int ret = send_shell_command(chmodCommand);
-        return (ret == 0);
+        if (ret != 0) {
+            fatal("Error executing %s returncode: %d", chmodCommand.c_str(), ret);
+        }
     } else {
-        return false;
+        fatal("Error pushing agent files to device");
     }
+
+    return true;
 }
 
-bool update_agent(FastDeploy_AgentUpdateStrategy agentUpdateStrategy, bool use_localagent,
-                  const char* adb_path) {
+void update_agent(FastDeploy_AgentUpdateStrategy agentUpdateStrategy) {
     long agent_version = get_agent_version();
     switch (agentUpdateStrategy) {
         case FastDeploy_AgentUpdateAlways:
-            if (deploy_agent(false, use_localagent, adb_path) == false) {
-                return false;
-            }
+            deploy_agent(false);
             break;
         case FastDeploy_AgentUpdateNewerTimeStamp:
-            if (deploy_agent(true, use_localagent, adb_path) == false) {
-                return false;
-            }
+            deploy_agent(true);
             break;
         case FastDeploy_AgentUpdateDifferentVersion:
             if (agent_version != kRequiredAgentVersion) {
@@ -136,112 +126,74 @@
                     printf("Device agent version is (%ld), (%ld) is required, re-deploying\n",
                            agent_version, kRequiredAgentVersion);
                 }
-                if (deploy_agent(false, use_localagent, adb_path) == false) {
-                    return false;
-                }
+                deploy_agent(false);
             }
             break;
     }
 
     agent_version = get_agent_version();
-    return (agent_version == kRequiredAgentVersion);
+    if (agent_version != kRequiredAgentVersion) {
+        fatal("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) {
-        return {};
+static std::string get_aapt2_path() {
+    if (g_use_localagent) {
+        // This should never happen on a Windows machine
+        const char* host_out = getenv("ANDROID_HOST_OUT");
+        if (host_out == nullptr) {
+            fatal("Could not locate aapt2 because $ANDROID_HOST_OUT is not defined");
+        }
+        return android::base::StringPrintf("%s/bin/aapt2", host_out);
     }
 
-    std::string utf8;
-    utf8.resize(utf8_length);
-    utf16_to_utf8(input, input_len, &*utf8.begin(), utf8_length + 1);
-    return utf8;
+    std::string adb_dir = android::base::GetExecutableDirectory();
+    if (adb_dir.empty()) {
+        fatal("Could not locate aapt2");
+    }
+    return adb_dir + "/aapt2";
+}
+
+static int system_capture(const char* cmd, std::string& output) {
+    FILE* pipe = popen(cmd, "re");
+    int fd = -1;
+
+    if (pipe != nullptr) {
+        fd = fileno(pipe);
+    }
+
+    if (fd == -1) {
+        fatal_errno("Could not create pipe for process '%s'", cmd);
+    }
+
+    if (!android::base::ReadFdToString(fd, &output)) {
+        fatal_errno("Error reading from process '%s'", cmd);
+    }
+
+    return pclose(pipe);
 }
 
 // output is required to point to a valid output string (non-null)
-static bool get_packagename_from_apk(const char* apkPath, std::string* output) {
-    using namespace android;
+static std::string get_packagename_from_apk(const char* apkPath) {
+    const char* kAapt2DumpNameCommandPattern = R"(%s dump packagename "%s")";
+    std::string aapt2_path_string = get_aapt2_path();
+    std::string getPackagenameCommand = android::base::StringPrintf(
+            kAapt2DumpNameCommandPattern, aapt2_path_string.c_str(), apkPath);
 
-    ZipFileRO* zipFile = ZipFileRO::open(apkPath);
-    if (zipFile == nullptr) {
-        return false;
+    std::string package_name;
+    int exit_code = system_capture(getPackagenameCommand.c_str(), package_name);
+    if (exit_code != 0) {
+        fatal("Error executing '%s' exitcode: %d", getPackagenameCommand.c_str(), exit_code);
     }
 
-    ZipEntryRO entry = zipFile->findEntryByName("AndroidManifest.xml");
-    if (entry == nullptr) {
-        return false;
-    }
-
-    uint32_t manifest_len = 0;
-    if (!zipFile->getEntryInfo(entry, NULL, &manifest_len, NULL, NULL, NULL, NULL)) {
-        return false;
-    }
-
-    std::vector<char> manifest_data(manifest_len);
-    if (!zipFile->uncompressEntry(entry, manifest_data.data(), manifest_len)) {
-        return false;
-    }
-
-    ResXMLTree tree;
-    status_t setto_status = tree.setTo(manifest_data.data(), manifest_len, true);
-    if (setto_status != NO_ERROR) {
-        return false;
-    }
-
-    ResXMLParser::event_code_t code;
-    while ((code = tree.next()) != ResXMLParser::BAD_DOCUMENT &&
-           code != ResXMLParser::END_DOCUMENT) {
-        switch (code) {
-            case ResXMLParser::START_TAG: {
-                size_t element_name_length;
-                const char16_t* element_name = tree.getElementName(&element_name_length);
-                if (element_name == nullptr) {
-                    continue;
-                }
-
-                std::u16string element_name_string(element_name, element_name_length);
-                if (element_name_string == u"manifest") {
-                    for (int i = 0; i < (int)tree.getAttributeCount(); i++) {
-                        size_t attribute_name_length;
-                        const char16_t* attribute_name_text =
-                                tree.getAttributeName(i, &attribute_name_length);
-                        if (attribute_name_text == nullptr) {
-                            continue;
-                        }
-                        std::u16string attribute_name_string(attribute_name_text,
-                                                             attribute_name_length);
-
-                        if (attribute_name_string == u"package") {
-                            size_t attribute_value_length;
-                            const char16_t* attribute_value_text =
-                                    tree.getAttributeStringValue(i, &attribute_value_length);
-                            if (attribute_value_text == nullptr) {
-                                continue;
-                            }
-                            *output = get_string_from_utf16(attribute_value_text,
-                                                            attribute_value_length);
-                            return true;
-                        }
-                    }
-                }
-                break;
-            }
-            default:
-                break;
-        }
-    }
-
-    return false;
+    // strip any line end characters from the output
+    return android::base::Trim(package_name);
 }
 
 int extract_metadata(const char* apkPath, FILE* outputFp) {
-    std::string packageName;
-    if (get_packagename_from_apk(apkPath, &packageName) == false) {
-        return -1;
-    }
-
-    const char* kAgentExtractCommandPattern = "/data/local/tmp/deployagent.sh extract %s";
+    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());
 
@@ -257,64 +209,43 @@
     return ret;
 }
 
-// output is required to point to a valid output string (non-null)
-static bool patch_generator_command(bool use_localagent, const char* adb_path,
-                                    std::string* output) {
-    if (use_localagent) {
+static std::string get_patch_generator_command() {
+    if (g_use_localagent) {
         // This should never happen on a Windows machine
-        const char* kGeneratorCommandPattern = "java -jar %s/framework/deploypatchgenerator.jar";
         const char* host_out = getenv("ANDROID_HOST_OUT");
         if (host_out == nullptr) {
-            return false;
+            fatal("Could not locate deploypatchgenerator.jar because $ANDROID_HOST_OUT is not "
+                  "defined");
         }
-        *output = android::base::StringPrintf(kGeneratorCommandPattern, host_out, host_out);
-        return true;
-    } else {
-        const char* kGeneratorCommandPattern = R"(java -jar "%s/deploypatchgenerator.jar")";
-        std::string mutable_adb_path = adb_path;
-        const char* adb_dir = dirname(&mutable_adb_path[0]);
-        if (adb_dir == nullptr) {
-            return false;
-        }
-
-        *output = android::base::StringPrintf(kGeneratorCommandPattern, adb_dir, adb_dir);
-        return true;
+        return android::base::StringPrintf("java -jar %s/framework/deploypatchgenerator.jar",
+                                           host_out);
     }
-    return false;
+
+    std::string adb_dir = android::base::GetExecutableDirectory();
+    if (adb_dir.empty()) {
+        fatal("Could not locate deploypatchgenerator.jar");
+    }
+    return android::base::StringPrintf(R"(java -jar "%s/deploypatchgenerator.jar")",
+                                       adb_dir.c_str());
 }
 
-int create_patch(const char* apkPath, const char* metadataPath, const char* patchPath,
-                 bool use_localagent, const char* adb_path) {
-    const char* kGeneratePatchCommandPattern = R"(%s "%s" "%s" > "%s")";
-    std::string patch_generator_command_string;
-    if (patch_generator_command(use_localagent, adb_path, &patch_generator_command_string) ==
-        false) {
-        return 1;
-    }
+int create_patch(const char* apkPath, const char* metadataPath, const char* patchPath) {
     std::string generatePatchCommand = android::base::StringPrintf(
-            kGeneratePatchCommandPattern, patch_generator_command_string.c_str(), apkPath,
-            metadataPath, patchPath);
+            R"(%s "%s" "%s" > "%s")", get_patch_generator_command().c_str(), apkPath, metadataPath,
+            patchPath);
     return system(generatePatchCommand.c_str());
 }
 
 std::string get_patch_path(const char* apkPath) {
-    std::string packageName;
-    if (get_packagename_from_apk(apkPath, &packageName) == false) {
-        return "";
-    }
+    std::string packageName = get_packagename_from_apk(apkPath);
     std::string patchDevicePath =
             android::base::StringPrintf("%s%s.patch", kDeviceAgentPath, packageName.c_str());
     return patchDevicePath;
 }
 
 int apply_patch_on_device(const char* apkPath, const char* patchPath, const char* outputPath) {
-    const std::string kAgentApplyCommandPattern =
-            "/data/local/tmp/deployagent.sh apply %s %s -o %s";
-
-    std::string packageName;
-    if (get_packagename_from_apk(apkPath, &packageName) == false) {
-        return -1;
-    }
+    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};
@@ -327,18 +258,13 @@
     std::string applyPatchCommand =
             android::base::StringPrintf(kAgentApplyCommandPattern.c_str(), packageName.c_str(),
                                         patchDevicePath.c_str(), outputPath);
+
     return send_shell_command(applyPatchCommand);
 }
 
 int install_patch(const char* apkPath, const char* patchPath, int argc, const char** argv) {
-    const std::string kAgentApplyCommandPattern =
-            "/data/local/tmp/deployagent.sh apply %s %s -pm %s";
-
-    std::string packageName;
-    if (get_packagename_from_apk(apkPath, &packageName) == false) {
-        return -1;
-    }
-
+    const std::string kAgentApplyCommandPattern = "/data/local/tmp/deployagent apply %s %s -pm %s";
+    std::string packageName = get_packagename_from_apk(apkPath);
     std::vector<const char*> srcs;
     std::string patchDevicePath =
             android::base::StringPrintf("%s%s.patch", kDeviceAgentPath, packageName.c_str());
diff --git a/adb/client/fastdeploy.h b/adb/client/fastdeploy.h
index d8acd30..e5e7663 100644
--- a/adb/client/fastdeploy.h
+++ b/adb/client/fastdeploy.h
@@ -18,20 +18,17 @@
 
 #include "adb.h"
 
-typedef enum EFastDeploy_AgentUpdateStrategy {
+enum FastDeploy_AgentUpdateStrategy {
     FastDeploy_AgentUpdateAlways,
     FastDeploy_AgentUpdateNewerTimeStamp,
     FastDeploy_AgentUpdateDifferentVersion
-} FastDeploy_AgentUpdateStrategy;
+};
 
-static constexpr int kFastDeployMinApi = 24;
-
+void fastdeploy_set_local_agent(bool use_localagent);
 int get_device_api_level();
-bool update_agent(FastDeploy_AgentUpdateStrategy agentUpdateStrategy, bool use_localagent,
-                  const char* adb_path);
+void update_agent(FastDeploy_AgentUpdateStrategy agentUpdateStrategy);
 int extract_metadata(const char* apkPath, FILE* outputFp);
-int create_patch(const char* apkPath, const char* metadataPath, const char* patchPath,
-                 bool use_localagent, const char* adb_path);
+int create_patch(const char* apkPath, const char* metadataPath, const char* patchPath);
 int apply_patch_on_device(const char* apkPath, const char* patchPath, const char* outputPath);
 int install_patch(const char* apkPath, const char* patchPath, int argc, const char** argv);
 std::string get_patch_path(const char* apkPath);
diff --git a/adb/client/main.cpp b/adb/client/main.cpp
index 095ad98..a7e454d 100644
--- a/adb/client/main.cpp
+++ b/adb/client/main.cpp
@@ -56,15 +56,6 @@
     LOG(INFO) << adb_version();
 }
 
-#if defined(_WIN32)
-static BOOL WINAPI ctrlc_handler(DWORD type) {
-    // TODO: Consider trying to kill a starting up adb server (if we're in
-    // launch_server) by calling GenerateConsoleCtrlEvent().
-    exit(STATUS_CONTROL_C_EXIT);
-    return TRUE;
-}
-#endif
-
 void adb_server_cleanup() {
     // Upon exit, we want to clean up in the following order:
     //   1. close_smartsockets, so that we don't get any new clients
@@ -97,12 +88,16 @@
         }
     }
 
-    SetConsoleCtrlHandler(ctrlc_handler, TRUE);
-#else
+    // TODO: On Ctrl-C, consider trying to kill a starting up adb server (if we're in
+    // launch_server) by calling GenerateConsoleCtrlEvent().
+
+    // On Windows, SIGBREAK is when Ctrl-Break is pressed or the console window is closed. It should
+    // act like Ctrl-C.
+    signal(SIGBREAK, [](int) { raise(SIGINT); });
+#endif
     signal(SIGINT, [](int) {
         fdevent_run_on_main_thread([]() { exit(0); });
     });
-#endif
 
     char* leak = getenv("ADB_LEAK");
     if (leak && strcmp(leak, "1") == 0) {
diff --git a/adb/client/usb_linux.cpp b/adb/client/usb_linux.cpp
index 869e858..f1bf559 100644
--- a/adb/client/usb_linux.cpp
+++ b/adb/client/usb_linux.cpp
@@ -30,6 +30,7 @@
 #include <string.h>
 #include <sys/ioctl.h>
 #include <sys/time.h>
+#include <sys/sysmacros.h>
 #include <sys/types.h>
 #include <unistd.h>
 
diff --git a/adb/daemon/remount_service.cpp b/adb/daemon/remount_service.cpp
index f7017dd..cf4d294 100644
--- a/adb/daemon/remount_service.cpp
+++ b/adb/daemon/remount_service.cpp
@@ -38,7 +38,6 @@
 #include <android-base/properties.h>
 #include <bootloader_message/bootloader_message.h>
 #include <cutils/android_reboot.h>
-#include <ext4_utils/ext4_utils.h>
 #include <fs_mgr.h>
 #include <fs_mgr_overlayfs.h>
 
@@ -96,27 +95,6 @@
     return result;
 }
 
-static bool fs_has_shared_blocks(const std::string& mount_point, const std::string& device) {
-    std::string path = mount_point + "/lost+found";
-    struct statfs fs;
-    if (statfs(path.c_str(), &fs) == -1 || fs.f_type != EXT4_SUPER_MAGIC) {
-        return false;
-    }
-    unique_fd fd(unix_open(device.c_str(), O_RDONLY));
-    if (fd < 0) {
-        return false;
-    }
-    struct ext4_super_block sb;
-    if (lseek64(fd, 1024, SEEK_SET) < 0 || unix_read(fd, &sb, sizeof(sb)) < 0) {
-        return false;
-    }
-    struct fs_info info;
-    if (ext4_parse_sb(&sb, &info) < 0) {
-        return false;
-    }
-    return (info.feat_ro_compat & EXT4_FEATURE_RO_COMPAT_SHARED_BLOCKS) != 0;
-}
-
 static bool can_unshare_blocks(int fd, const char* dev) {
     const char* E2FSCK_BIN = "/system/bin/e2fsck";
     if (access(E2FSCK_BIN, X_OK)) {
@@ -231,12 +209,8 @@
     bool system_verified = !(android::base::GetProperty("partition.system.verified", "").empty());
     bool vendor_verified = !(android::base::GetProperty("partition.vendor.verified", "").empty());
 
-    std::vector<std::string> partitions = {"/odm", "/oem", "/product", "/vendor"};
-    if (android::base::GetBoolProperty("ro.build.system_root_image", false)) {
-        partitions.push_back("/");
-    } else {
-        partitions.push_back("/system");
-    }
+    std::vector<std::string> partitions{"/",        "/odm",   "/oem", "/product_services",
+                                        "/product", "/vendor"};
 
     bool verity_enabled = (system_verified || vendor_verified);
 
@@ -250,7 +224,7 @@
     std::set<std::string> dedup;
     for (const auto& partition : partitions) {
         std::string dev = find_mount(partition.c_str(), partition == "/");
-        if (dev.empty() || !fs_has_shared_blocks(partition, dev)) {
+        if (dev.empty() || !fs_mgr_has_shared_blocks(partition, dev)) {
             continue;
         }
         if (can_unshare_blocks(fd.get(), dev.c_str())) {
diff --git a/adb/fastdeploy/Android.bp b/adb/fastdeploy/Android.bp
index 30f4730..400b12f 100644
--- a/adb/fastdeploy/Android.bp
+++ b/adb/fastdeploy/Android.bp
@@ -14,24 +14,17 @@
 // limitations under the License.
 //
 
-java_library {
+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",
     }
 }
 
-cc_prebuilt_binary {
-    name: "deployagent.sh",
-
-    srcs: ["deployagent/deployagent.sh"],
-    required: ["deployagent"],
-    device_supported: true,
-}
-
 java_binary_host {
     name: "deploypatchgenerator",
     srcs: ["deploypatchgenerator/src/**/*.java", "deploylib/src/**/*.java", "proto/**/*.proto"],
diff --git a/adb/sysdeps.h b/adb/sysdeps.h
index 0c2e45c..be0bdd0 100644
--- a/adb/sysdeps.h
+++ b/adb/sysdeps.h
@@ -72,12 +72,7 @@
     return c == '\\' || c == '/';
 }
 
-static __inline__ int adb_thread_setname(const std::string& name) {
-    // TODO: See https://msdn.microsoft.com/en-us/library/xcb2z8hs.aspx for how to set
-    // the thread name in Windows. Unfortunately, it only works during debugging, but
-    // our build process doesn't generate PDB files needed for debugging.
-    return 0;
-}
+extern int adb_thread_setname(const std::string& name);
 
 static __inline__ void  close_on_exec(int  fd)
 {
@@ -129,6 +124,13 @@
 #undef   write
 #define  write  ___xxx_write
 
+// 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);
+}
+#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)
 {
@@ -523,6 +525,7 @@
 // via _setmode()).
 #define  unix_read   adb_read
 #define  unix_write  adb_write
+#define unix_lseek adb_lseek
 #define  unix_close  adb_close
 
 static __inline__ int adb_thread_setname(const std::string& name) {
diff --git a/adb/sysdeps_win32.cpp b/adb/sysdeps_win32.cpp
index c94d13f..026dd1c 100644
--- a/adb/sysdeps_win32.cpp
+++ b/adb/sysdeps_win32.cpp
@@ -2742,3 +2742,26 @@
 
     return buf;
 }
+
+// The SetThreadDescription API was brought in version 1607 of Windows 10.
+typedef HRESULT(WINAPI* SetThreadDescription)(HANDLE hThread, PCWSTR lpThreadDescription);
+
+// Based on PlatformThread::SetName() from
+// https://cs.chromium.org/chromium/src/base/threading/platform_thread_win.cc
+int adb_thread_setname(const std::string& name) {
+    // The SetThreadDescription API works even if no debugger is attached.
+    auto set_thread_description_func = reinterpret_cast<SetThreadDescription>(
+            ::GetProcAddress(::GetModuleHandleW(L"Kernel32.dll"), "SetThreadDescription"));
+    if (set_thread_description_func) {
+        std::wstring name_wide;
+        if (!android::base::UTF8ToWide(name.c_str(), &name_wide)) {
+            return errno;
+        }
+        set_thread_description_func(::GetCurrentThread(), name_wide.c_str());
+    }
+
+    // Don't use the thread naming SEH exception because we're compiled with -fno-exceptions.
+    // https://docs.microsoft.com/en-us/visualstudio/debugger/how-to-set-a-thread-name-in-native-code?view=vs-2017
+
+    return 0;
+}
diff --git a/adb/test_adb.py b/adb/test_adb.py
index cde2b22..7e73818 100755
--- a/adb/test_adb.py
+++ b/adb/test_adb.py
@@ -490,6 +490,58 @@
                 self.assertEqual(_devices(server_port), [])
 
 
+@unittest.skipUnless(sys.platform == "win32", "requires Windows")
+class PowerTest(unittest.TestCase):
+    def test_resume_usb_kick(self):
+        """Resuming from sleep/hibernate should kick USB devices."""
+        try:
+            usb_serial = subprocess.check_output(["adb", "-d", "get-serialno"]).strip()
+        except subprocess.CalledProcessError:
+            # If there are multiple USB devices, we don't have a way to check whether the selected
+            # device is USB.
+            raise unittest.SkipTest('requires single USB device')
+
+        try:
+            serial = subprocess.check_output(["adb", "get-serialno"]).strip()
+        except subprocess.CalledProcessError:
+            # Did you forget to select a device with $ANDROID_SERIAL?
+            raise unittest.SkipTest('requires $ANDROID_SERIAL set to a USB device')
+
+        # Test only works with USB devices because adb _power_notification_thread does not kick
+        # non-USB devices on resume event.
+        if serial != usb_serial:
+            raise unittest.SkipTest('requires USB device')
+
+        # Run an adb shell command in the background that takes a while to complete.
+        proc = subprocess.Popen(['adb', 'shell', 'sleep', '5'])
+
+        # Wait for startup of adb server's _power_notification_thread.
+        time.sleep(0.1)
+
+        # Simulate resuming from sleep/hibernation by sending Windows message.
+        import ctypes
+        from ctypes import wintypes
+        HWND_BROADCAST = 0xffff
+        WM_POWERBROADCAST = 0x218
+        PBT_APMRESUMEAUTOMATIC = 0x12
+
+        PostMessageW = ctypes.windll.user32.PostMessageW
+        PostMessageW.restype = wintypes.BOOL
+        PostMessageW.argtypes = (wintypes.HWND, wintypes.UINT, wintypes.WPARAM, wintypes.LPARAM)
+        result = PostMessageW(HWND_BROADCAST, WM_POWERBROADCAST, PBT_APMRESUMEAUTOMATIC, 0)
+        if not result:
+            raise ctypes.WinError()
+
+        # Wait for connection to adb shell to be broken by _power_notification_thread detecting the
+        # Windows message.
+        start = time.time()
+        proc.wait()
+        end = time.time()
+
+        # If the power event was detected, the adb shell command should be broken very quickly.
+        self.assertLess(end - start, 2)
+
+
 def main():
     """Main entrypoint."""
     random.seed(0)
diff --git a/adb/test_device.py b/adb/test_device.py
index 20f224a..9f45115 100644
--- a/adb/test_device.py
+++ b/adb/test_device.py
@@ -1334,6 +1334,206 @@
             self.device.forward_remove("tcp:{}".format(local_port))
 
 
+if sys.platform == "win32":
+    # From https://stackoverflow.com/a/38749458
+    import os
+    import contextlib
+    import msvcrt
+    import ctypes
+    from ctypes import wintypes
+
+    kernel32 = ctypes.WinDLL('kernel32', use_last_error=True)
+
+    GENERIC_READ  = 0x80000000
+    GENERIC_WRITE = 0x40000000
+    FILE_SHARE_READ  = 1
+    FILE_SHARE_WRITE = 2
+    CONSOLE_TEXTMODE_BUFFER = 1
+    INVALID_HANDLE_VALUE = wintypes.HANDLE(-1).value
+    STD_OUTPUT_HANDLE = wintypes.DWORD(-11)
+    STD_ERROR_HANDLE = wintypes.DWORD(-12)
+
+    def _check_zero(result, func, args):
+        if not result:
+            raise ctypes.WinError(ctypes.get_last_error())
+        return args
+
+    def _check_invalid(result, func, args):
+        if result == INVALID_HANDLE_VALUE:
+            raise ctypes.WinError(ctypes.get_last_error())
+        return args
+
+    if not hasattr(wintypes, 'LPDWORD'): # Python 2
+        wintypes.LPDWORD = ctypes.POINTER(wintypes.DWORD)
+        wintypes.PSMALL_RECT = ctypes.POINTER(wintypes.SMALL_RECT)
+
+    class COORD(ctypes.Structure):
+        _fields_ = (('X', wintypes.SHORT),
+                    ('Y', wintypes.SHORT))
+
+    class CONSOLE_SCREEN_BUFFER_INFOEX(ctypes.Structure):
+        _fields_ = (('cbSize',               wintypes.ULONG),
+                    ('dwSize',               COORD),
+                    ('dwCursorPosition',     COORD),
+                    ('wAttributes',          wintypes.WORD),
+                    ('srWindow',             wintypes.SMALL_RECT),
+                    ('dwMaximumWindowSize',  COORD),
+                    ('wPopupAttributes',     wintypes.WORD),
+                    ('bFullscreenSupported', wintypes.BOOL),
+                    ('ColorTable',           wintypes.DWORD * 16))
+        def __init__(self, *args, **kwds):
+            super(CONSOLE_SCREEN_BUFFER_INFOEX, self).__init__(
+                    *args, **kwds)
+            self.cbSize = ctypes.sizeof(self)
+
+    PCONSOLE_SCREEN_BUFFER_INFOEX = ctypes.POINTER(
+                                        CONSOLE_SCREEN_BUFFER_INFOEX)
+    LPSECURITY_ATTRIBUTES = wintypes.LPVOID
+
+    kernel32.GetStdHandle.errcheck = _check_invalid
+    kernel32.GetStdHandle.restype = wintypes.HANDLE
+    kernel32.GetStdHandle.argtypes = (
+        wintypes.DWORD,) # _In_ nStdHandle
+
+    kernel32.CreateConsoleScreenBuffer.errcheck = _check_invalid
+    kernel32.CreateConsoleScreenBuffer.restype = wintypes.HANDLE
+    kernel32.CreateConsoleScreenBuffer.argtypes = (
+        wintypes.DWORD,        # _In_       dwDesiredAccess
+        wintypes.DWORD,        # _In_       dwShareMode
+        LPSECURITY_ATTRIBUTES, # _In_opt_   lpSecurityAttributes
+        wintypes.DWORD,        # _In_       dwFlags
+        wintypes.LPVOID)       # _Reserved_ lpScreenBufferData
+
+    kernel32.GetConsoleScreenBufferInfoEx.errcheck = _check_zero
+    kernel32.GetConsoleScreenBufferInfoEx.argtypes = (
+        wintypes.HANDLE,               # _In_  hConsoleOutput
+        PCONSOLE_SCREEN_BUFFER_INFOEX) # _Out_ lpConsoleScreenBufferInfo
+
+    kernel32.SetConsoleScreenBufferInfoEx.errcheck = _check_zero
+    kernel32.SetConsoleScreenBufferInfoEx.argtypes = (
+        wintypes.HANDLE,               # _In_  hConsoleOutput
+        PCONSOLE_SCREEN_BUFFER_INFOEX) # _In_  lpConsoleScreenBufferInfo
+
+    kernel32.SetConsoleWindowInfo.errcheck = _check_zero
+    kernel32.SetConsoleWindowInfo.argtypes = (
+        wintypes.HANDLE,      # _In_ hConsoleOutput
+        wintypes.BOOL,        # _In_ bAbsolute
+        wintypes.PSMALL_RECT) # _In_ lpConsoleWindow
+
+    kernel32.FillConsoleOutputCharacterW.errcheck = _check_zero
+    kernel32.FillConsoleOutputCharacterW.argtypes = (
+        wintypes.HANDLE,  # _In_  hConsoleOutput
+        wintypes.WCHAR,   # _In_  cCharacter
+        wintypes.DWORD,   # _In_  nLength
+        COORD,            # _In_  dwWriteCoord
+        wintypes.LPDWORD) # _Out_ lpNumberOfCharsWritten
+
+    kernel32.ReadConsoleOutputCharacterW.errcheck = _check_zero
+    kernel32.ReadConsoleOutputCharacterW.argtypes = (
+        wintypes.HANDLE,  # _In_  hConsoleOutput
+        wintypes.LPWSTR,  # _Out_ lpCharacter
+        wintypes.DWORD,   # _In_  nLength
+        COORD,            # _In_  dwReadCoord
+        wintypes.LPDWORD) # _Out_ lpNumberOfCharsRead
+
+    @contextlib.contextmanager
+    def allocate_console():
+        allocated = kernel32.AllocConsole()
+        try:
+            yield allocated
+        finally:
+            if allocated:
+                kernel32.FreeConsole()
+
+    @contextlib.contextmanager
+    def console_screen(ncols=None, nrows=None):
+        info = CONSOLE_SCREEN_BUFFER_INFOEX()
+        new_info = CONSOLE_SCREEN_BUFFER_INFOEX()
+        nwritten = (wintypes.DWORD * 1)()
+        hStdOut = kernel32.GetStdHandle(STD_OUTPUT_HANDLE)
+        kernel32.GetConsoleScreenBufferInfoEx(
+               hStdOut, ctypes.byref(info))
+        if ncols is None:
+            ncols = info.dwSize.X
+        if nrows is None:
+            nrows = info.dwSize.Y
+        elif nrows > 9999:
+            raise ValueError('nrows must be 9999 or less')
+        fd_screen = None
+        hScreen = kernel32.CreateConsoleScreenBuffer(
+                    GENERIC_READ | GENERIC_WRITE,
+                    FILE_SHARE_READ | FILE_SHARE_WRITE,
+                    None, CONSOLE_TEXTMODE_BUFFER, None)
+        try:
+            fd_screen = msvcrt.open_osfhandle(
+                            hScreen, os.O_RDWR | os.O_BINARY)
+            kernel32.GetConsoleScreenBufferInfoEx(
+                   hScreen, ctypes.byref(new_info))
+            new_info.dwSize = COORD(ncols, nrows)
+            new_info.srWindow = wintypes.SMALL_RECT(
+                    Left=0, Top=0, Right=(ncols - 1),
+                    Bottom=(info.srWindow.Bottom - info.srWindow.Top))
+            kernel32.SetConsoleScreenBufferInfoEx(
+                    hScreen, ctypes.byref(new_info))
+            kernel32.SetConsoleWindowInfo(hScreen, True,
+                    ctypes.byref(new_info.srWindow))
+            kernel32.FillConsoleOutputCharacterW(
+                    hScreen, u'\0', ncols * nrows, COORD(0,0), nwritten)
+            kernel32.SetConsoleActiveScreenBuffer(hScreen)
+            try:
+                yield fd_screen
+            finally:
+                kernel32.SetConsoleScreenBufferInfoEx(
+                    hStdOut, ctypes.byref(info))
+                kernel32.SetConsoleWindowInfo(hStdOut, True,
+                        ctypes.byref(info.srWindow))
+                kernel32.SetConsoleActiveScreenBuffer(hStdOut)
+        finally:
+            if fd_screen is not None:
+                os.close(fd_screen)
+            else:
+                kernel32.CloseHandle(hScreen)
+
+    def read_screen(fd):
+        hScreen = msvcrt.get_osfhandle(fd)
+        csbi = CONSOLE_SCREEN_BUFFER_INFOEX()
+        kernel32.GetConsoleScreenBufferInfoEx(
+            hScreen, ctypes.byref(csbi))
+        ncols = csbi.dwSize.X
+        pos = csbi.dwCursorPosition
+        length = ncols * pos.Y + pos.X + 1
+        buf = (ctypes.c_wchar * length)()
+        n = (wintypes.DWORD * 1)()
+        kernel32.ReadConsoleOutputCharacterW(
+            hScreen, buf, length, COORD(0,0), n)
+        lines = [buf[i:i+ncols].rstrip(u'\0')
+                    for i in range(0, n[0], ncols)]
+        return u'\n'.join(lines)
+
+@unittest.skipUnless(sys.platform == "win32", "requires Windows")
+class WindowsConsoleTest(DeviceTest):
+    def test_unicode_output(self):
+        """Test Unicode command line parameters and Unicode console window output.
+
+        Bug: https://issuetracker.google.com/issues/111972753
+        """
+        # If we don't have a console window, allocate one. This isn't necessary if we're already
+        # being run from a console window, which is typical.
+        with allocate_console() as allocated_console:
+            # Create a temporary console buffer and switch to it. We could also pass a parameter of
+            # ncols=len(unicode_string), but it causes the window to flash as it is resized and
+            # likely unnecessary given the typical console window size.
+            with console_screen(nrows=1000) as screen:
+                unicode_string = u'로보카 폴리'
+                # Run adb and allow it to detect that stdout is a console, not a pipe, by using
+                # device.shell_popen() which does not use a pipe, unlike device.shell().
+                process = self.device.shell_popen(['echo', '"' + unicode_string + '"'])
+                process.wait()
+                # Read what was written by adb to the temporary console buffer.
+                console_output = read_screen(screen)
+                self.assertEqual(unicode_string, console_output)
+
+
 def main():
     random.seed(0)
     if len(adb.get_devices()) > 0:
diff --git a/adb/transport.cpp b/adb/transport.cpp
index 332e0f8..95df490 100644
--- a/adb/transport.cpp
+++ b/adb/transport.cpp
@@ -220,25 +220,34 @@
         }
         D("attempting to reconnect %s", attempt.transport->serial.c_str());
 
-        if (!attempt.transport->Reconnect()) {
-            D("attempting to reconnect %s failed.", attempt.transport->serial.c_str());
-            if (attempt.attempts_left == 0) {
-                D("transport %s exceeded the number of retry attempts. giving up on it.",
-                  attempt.transport->serial.c_str());
-                remove_transport(attempt.transport);
+        switch (attempt.transport->Reconnect()) {
+            case ReconnectResult::Retry: {
+                D("attempting to reconnect %s failed.", attempt.transport->serial.c_str());
+                if (attempt.attempts_left == 0) {
+                    D("transport %s exceeded the number of retry attempts. giving up on it.",
+                      attempt.transport->serial.c_str());
+                    remove_transport(attempt.transport);
+                    continue;
+                }
+
+                std::lock_guard<std::mutex> lock(reconnect_mutex_);
+                reconnect_queue_.emplace(ReconnectAttempt{
+                        attempt.transport,
+                        std::chrono::steady_clock::now() + ReconnectHandler::kDefaultTimeout,
+                        attempt.attempts_left - 1});
                 continue;
             }
 
-            std::lock_guard<std::mutex> lock(reconnect_mutex_);
-            reconnect_queue_.emplace(ReconnectAttempt{
-                    attempt.transport,
-                    std::chrono::steady_clock::now() + ReconnectHandler::kDefaultTimeout,
-                    attempt.attempts_left - 1});
-            continue;
-        }
+            case ReconnectResult::Success:
+                D("reconnection to %s succeeded.", attempt.transport->serial.c_str());
+                register_transport(attempt.transport);
+                continue;
 
-        D("reconnection to %s succeeded.", attempt.transport->serial.c_str());
-        register_transport(attempt.transport);
+            case ReconnectResult::Abort:
+                D("cancelling reconnection attempt to %s.", attempt.transport->serial.c_str());
+                remove_transport(attempt.transport);
+                continue;
+        }
     }
 }
 
@@ -1031,12 +1040,6 @@
     return max_payload;
 }
 
-namespace {
-
-constexpr char kFeatureStringDelimiter = ',';
-
-}  // namespace
-
 const FeatureSet& supported_features() {
     // Local static allocation to avoid global non-POD variables.
     static const FeatureSet* features = new FeatureSet{
@@ -1050,7 +1053,7 @@
 }
 
 std::string FeatureSetToString(const FeatureSet& features) {
-    return android::base::Join(features, kFeatureStringDelimiter);
+    return android::base::Join(features, ',');
 }
 
 FeatureSet StringToFeatureSet(const std::string& features_string) {
@@ -1058,7 +1061,7 @@
         return FeatureSet();
     }
 
-    auto names = android::base::Split(features_string, {kFeatureStringDelimiter});
+    auto names = android::base::Split(features_string, ",");
     return FeatureSet(names.begin(), names.end());
 }
 
@@ -1128,7 +1131,7 @@
     connection_waitable_->SetConnectionEstablished(success);
 }
 
-bool atransport::Reconnect() {
+ReconnectResult atransport::Reconnect() {
     return reconnect_(this);
 }
 
diff --git a/adb/transport.h b/adb/transport.h
index f362f24..f854ce5 100644
--- a/adb/transport.h
+++ b/adb/transport.h
@@ -193,6 +193,12 @@
     DISALLOW_COPY_AND_ASSIGN(ConnectionWaitable);
 };
 
+enum class ReconnectResult {
+    Retry,
+    Success,
+    Abort,
+};
+
 class atransport {
   public:
     // TODO(danalbert): We expose waaaaaaay too much stuff because this was
@@ -200,7 +206,7 @@
     // class in one go is a very large change. Given how bad our testing is,
     // it's better to do this piece by piece.
 
-    using ReconnectCallback = std::function<bool(atransport*)>;
+    using ReconnectCallback = std::function<ReconnectResult(atransport*)>;
 
     atransport(ReconnectCallback reconnect, ConnectionState state)
         : id(NextTransportId()),
@@ -215,7 +221,7 @@
         max_payload = MAX_PAYLOAD;
     }
     atransport(ConnectionState state = kCsOffline)
-        : atransport([](atransport*) { return false; }, state) {}
+        : atransport([](atransport*) { return ReconnectResult::Abort; }, state) {}
     virtual ~atransport();
 
     int Write(apacket* p);
@@ -295,9 +301,8 @@
     // Gets a shared reference to the ConnectionWaitable.
     std::shared_ptr<ConnectionWaitable> connection_waitable() { return connection_waitable_; }
 
-    // Attempts to reconnect with the underlying Connection. Returns true if the
-    // reconnection attempt succeeded.
-    bool Reconnect();
+    // Attempts to reconnect with the underlying Connection.
+    ReconnectResult Reconnect();
 
   private:
     std::atomic<bool> kicked_;
diff --git a/adb/transport_local.cpp b/adb/transport_local.cpp
index 8b8fd51..8353d89 100644
--- a/adb/transport_local.cpp
+++ b/adb/transport_local.cpp
@@ -117,14 +117,15 @@
         std::tie(fd, port, serial) = tcp_connect(address, &response);
         if (fd == -1) {
             D("reconnect failed: %s", response.c_str());
-            return false;
+            return ReconnectResult::Retry;
         }
 
         // This invokes the part of register_socket_transport() that needs to be
         // invoked if the atransport* has already been setup. This eventually
         // calls atransport->SetConnection() with a newly created Connection*
         // that will in turn send the CNXN packet.
-        return init_socket_transport(t, std::move(fd), port, 0) >= 0;
+        return init_socket_transport(t, std::move(fd), port, 0) >= 0 ? ReconnectResult::Success
+                                                                     : ReconnectResult::Retry;
     };
 
     int error;
@@ -166,7 +167,7 @@
         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 false; })) {
+                                      [](atransport*) { return ReconnectResult::Abort; })) {
             return 0;
         }
     }
@@ -186,8 +187,8 @@
 }
 
 // Retry the disconnected local port for 60 times, and sleep 1 second between two retries.
-constexpr uint32_t LOCAL_PORT_RETRY_COUNT = 60;
-constexpr auto LOCAL_PORT_RETRY_INTERVAL = 1s;
+static constexpr uint32_t LOCAL_PORT_RETRY_COUNT = 60;
+static constexpr auto LOCAL_PORT_RETRY_INTERVAL = 1s;
 
 struct RetryPort {
     int port;
@@ -269,7 +270,7 @@
             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 false; });
+                                      [](atransport*) { return ReconnectResult::Abort; });
         }
     }
     D("transport: server_socket_thread() exiting");
@@ -366,7 +367,7 @@
                 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 false; });
+                                          [](atransport*) { return ReconnectResult::Abort; });
             }
 
             /* Prepare for accepting of the next ADB host connection. */
diff --git a/base/include/android-base/macros.h b/base/include/android-base/macros.h
index 49cc0c9..1748665 100644
--- a/base/include/android-base/macros.h
+++ b/base/include/android-base/macros.h
@@ -170,7 +170,9 @@
 //
 //  In either case this macro has no effect on runtime behavior and performance
 //  of code.
+#ifndef FALLTHROUGH_INTENDED
 #define FALLTHROUGH_INTENDED [[clang::fallthrough]]  // NOLINT
+#endif
 
 // Current ABI string
 #if defined(__arm__)
diff --git a/base/include/android-base/parseint.h b/base/include/android-base/parseint.h
index 5bfa47e..9444fdd 100644
--- a/base/include/android-base/parseint.h
+++ b/base/include/android-base/parseint.h
@@ -38,6 +38,7 @@
   }
 
   if (s[0] == '-') {
+    errno = EINVAL;
     return false;
   }
 
@@ -45,14 +46,22 @@
   errno = 0;
   char* end;
   unsigned long long int result = strtoull(s, &end, base);
-  if (errno != 0 || end == s) return false;
+  if (errno != 0) return false;
+  if (end == s) {
+    errno = EINVAL;
+    return false;
+  }
   if (*end != '\0') {
     const char* suffixes = "bkmgtpe";
     const char* suffix;
-    if (!allow_suffixes || (suffix = strchr(suffixes, tolower(*end))) == nullptr) return false;
-    if (__builtin_mul_overflow(result, 1ULL << (10 * (suffix - suffixes)), &result)) return false;
+    if ((!allow_suffixes || (suffix = strchr(suffixes, tolower(*end))) == nullptr) ||
+        __builtin_mul_overflow(result, 1ULL << (10 * (suffix - suffixes)), &result)) {
+      errno = EINVAL;
+      return false;
+    }
   }
   if (max < result) {
+    errno = ERANGE;
     return false;
   }
   if (out != nullptr) {
@@ -95,10 +104,15 @@
   errno = 0;
   char* end;
   long long int result = strtoll(s, &end, base);
-  if (errno != 0 || s == end || *end != '\0') {
+  if (errno != 0) {
+    return false;
+  }
+  if (s == end || *end != '\0') {
+    errno = EINVAL;
     return false;
   }
   if (result < min || max < result) {
+    errno = ERANGE;
     return false;
   }
   if (out != nullptr) {
diff --git a/base/include/android-base/test_utils.h b/base/include/android-base/test_utils.h
index 9e2ea97..2abe68e 100644
--- a/base/include/android-base/test_utils.h
+++ b/base/include/android-base/test_utils.h
@@ -62,16 +62,18 @@
   CapturedStdFd(int std_fd);
   ~CapturedStdFd();
 
-  int fd() const;
   std::string str();
 
- private:
-  void Init();
+  void Start();
+  void Stop();
   void Reset();
 
+ private:
+  int fd() const;
+
   TemporaryFile temp_file_;
   int std_fd_;
-  int old_fd_;
+  int old_fd_ = -1;
 
   DISALLOW_COPY_AND_ASSIGN(CapturedStdFd);
 };
diff --git a/base/include/android-base/unique_fd.h b/base/include/android-base/unique_fd.h
index c6936f1..71025ad 100644
--- a/base/include/android-base/unique_fd.h
+++ b/base/include/android-base/unique_fd.h
@@ -22,6 +22,7 @@
 #include <sys/socket.h>
 #endif
 
+#include <stdio.h>
 #include <sys/types.h>
 #include <unistd.h>
 
@@ -199,6 +200,17 @@
   return Socketpair(AF_UNIX, type, 0, left, right);
 }
 
+// Using fdopen with unique_fd correctly is more annoying than it should be,
+// because fdopen doesn't close the file descriptor received upon failure.
+inline FILE* Fdopen(unique_fd&& ufd, const char* mode) {
+  int fd = ufd.release();
+  FILE* file = fdopen(fd, mode);
+  if (!file) {
+    close(fd);
+  }
+  return file;
+}
+
 #endif  // !defined(_WIN32)
 
 }  // namespace base
diff --git a/base/logging_test.cpp b/base/logging_test.cpp
index 75b4ea0..3113fb4 100644
--- a/base/logging_test.cpp
+++ b/base/logging_test.cpp
@@ -206,10 +206,8 @@
 }
 #endif
 
-static void CheckMessage(CapturedStderr& cap, android::base::LogSeverity severity,
+static void CheckMessage(const std::string& output, android::base::LogSeverity severity,
                          const char* expected, const char* expected_tag = nullptr) {
-  std::string output = cap.str();
-
   // We can't usefully check the output of any of these on Windows because we
   // don't have std::regex, but we can at least make sure we printed at least as
   // many characters are in the log message.
@@ -231,20 +229,28 @@
 #endif
 }
 
+static void CheckMessage(CapturedStderr& cap, android::base::LogSeverity severity,
+                         const char* expected, const char* expected_tag = nullptr) {
+  cap.Stop();
+  std::string output = cap.str();
+  return CheckMessage(output, severity, expected, expected_tag);
+}
 
-#define CHECK_LOG_STREAM_DISABLED(severity) \
-  { \
+#define CHECK_LOG_STREAM_DISABLED(severity)                      \
+  {                                                              \
     android::base::ScopedLogSeverity sls1(android::base::FATAL); \
-    CapturedStderr cap1; \
-    LOG_STREAM(severity) << "foo bar"; \
-    ASSERT_EQ(0, lseek(cap1.fd(), 0, SEEK_CUR)); \
-  } \
-  { \
+    CapturedStderr cap1;                                         \
+    LOG_STREAM(severity) << "foo bar";                           \
+    cap1.Stop();                                                 \
+    ASSERT_EQ("", cap1.str());                                   \
+  }                                                              \
+  {                                                              \
     android::base::ScopedLogSeverity sls1(android::base::FATAL); \
-    CapturedStderr cap1; \
-    LOG_STREAM(::android::base::severity) << "foo bar"; \
-    ASSERT_EQ(0, lseek(cap1.fd(), 0, SEEK_CUR)); \
-  } \
+    CapturedStderr cap1;                                         \
+    LOG_STREAM(::android::base::severity) << "foo bar";          \
+    cap1.Stop();                                                 \
+    ASSERT_EQ("", cap1.str());                                   \
+  }
 
 #define CHECK_LOG_STREAM_ENABLED(severity) \
   { \
@@ -265,7 +271,7 @@
 }
 
 TEST(logging, LOG_STREAM_FATAL_WITHOUT_ABORT_enabled) {
-  CHECK_LOG_STREAM_ENABLED(FATAL_WITHOUT_ABORT);
+  ASSERT_NO_FATAL_FAILURE(CHECK_LOG_STREAM_ENABLED(FATAL_WITHOUT_ABORT));
 }
 
 TEST(logging, LOG_STREAM_ERROR_disabled) {
@@ -273,7 +279,7 @@
 }
 
 TEST(logging, LOG_STREAM_ERROR_enabled) {
-  CHECK_LOG_STREAM_ENABLED(ERROR);
+  ASSERT_NO_FATAL_FAILURE(CHECK_LOG_STREAM_ENABLED(ERROR));
 }
 
 TEST(logging, LOG_STREAM_WARNING_disabled) {
@@ -281,7 +287,7 @@
 }
 
 TEST(logging, LOG_STREAM_WARNING_enabled) {
-  CHECK_LOG_STREAM_ENABLED(WARNING);
+  ASSERT_NO_FATAL_FAILURE(CHECK_LOG_STREAM_ENABLED(WARNING));
 }
 
 TEST(logging, LOG_STREAM_INFO_disabled) {
@@ -289,7 +295,7 @@
 }
 
 TEST(logging, LOG_STREAM_INFO_enabled) {
-  CHECK_LOG_STREAM_ENABLED(INFO);
+  ASSERT_NO_FATAL_FAILURE(CHECK_LOG_STREAM_ENABLED(INFO));
 }
 
 TEST(logging, LOG_STREAM_DEBUG_disabled) {
@@ -297,7 +303,7 @@
 }
 
 TEST(logging, LOG_STREAM_DEBUG_enabled) {
-  CHECK_LOG_STREAM_ENABLED(DEBUG);
+  ASSERT_NO_FATAL_FAILURE(CHECK_LOG_STREAM_ENABLED(DEBUG));
 }
 
 TEST(logging, LOG_STREAM_VERBOSE_disabled) {
@@ -305,26 +311,27 @@
 }
 
 TEST(logging, LOG_STREAM_VERBOSE_enabled) {
-  CHECK_LOG_STREAM_ENABLED(VERBOSE);
+  ASSERT_NO_FATAL_FAILURE(CHECK_LOG_STREAM_ENABLED(VERBOSE));
 }
 
 #undef CHECK_LOG_STREAM_DISABLED
 #undef CHECK_LOG_STREAM_ENABLED
 
-
-#define CHECK_LOG_DISABLED(severity) \
-  { \
+#define CHECK_LOG_DISABLED(severity)                             \
+  {                                                              \
     android::base::ScopedLogSeverity sls1(android::base::FATAL); \
-    CapturedStderr cap1; \
-    LOG(severity) << "foo bar"; \
-    ASSERT_EQ(0, lseek(cap1.fd(), 0, SEEK_CUR)); \
-  } \
-  { \
+    CapturedStderr cap1;                                         \
+    LOG(severity) << "foo bar";                                  \
+    cap1.Stop();                                                 \
+    ASSERT_EQ("", cap1.str());                                   \
+  }                                                              \
+  {                                                              \
     android::base::ScopedLogSeverity sls1(android::base::FATAL); \
-    CapturedStderr cap1; \
-    LOG(::android::base::severity) << "foo bar"; \
-    ASSERT_EQ(0, lseek(cap1.fd(), 0, SEEK_CUR)); \
-  } \
+    CapturedStderr cap1;                                         \
+    LOG(::android::base::severity) << "foo bar";                 \
+    cap1.Stop();                                                 \
+    ASSERT_EQ("", cap1.str());                                   \
+  }
 
 #define CHECK_LOG_ENABLED(severity) \
   { \
@@ -350,7 +357,7 @@
 }
 
 TEST(logging, LOG_FATAL_WITHOUT_ABORT_enabled) {
-  CHECK_LOG_ENABLED(FATAL_WITHOUT_ABORT);
+  ASSERT_NO_FATAL_FAILURE(CHECK_LOG_ENABLED(FATAL_WITHOUT_ABORT));
 }
 
 TEST(logging, LOG_ERROR_disabled) {
@@ -358,7 +365,7 @@
 }
 
 TEST(logging, LOG_ERROR_enabled) {
-  CHECK_LOG_ENABLED(ERROR);
+  ASSERT_NO_FATAL_FAILURE(CHECK_LOG_ENABLED(ERROR));
 }
 
 TEST(logging, LOG_WARNING_disabled) {
@@ -366,7 +373,7 @@
 }
 
 TEST(logging, LOG_WARNING_enabled) {
-  CHECK_LOG_ENABLED(WARNING);
+  ASSERT_NO_FATAL_FAILURE(CHECK_LOG_ENABLED(WARNING));
 }
 
 TEST(logging, LOG_INFO_disabled) {
@@ -374,7 +381,7 @@
 }
 
 TEST(logging, LOG_INFO_enabled) {
-  CHECK_LOG_ENABLED(INFO);
+  ASSERT_NO_FATAL_FAILURE(CHECK_LOG_ENABLED(INFO));
 }
 
 TEST(logging, LOG_DEBUG_disabled) {
@@ -382,7 +389,7 @@
 }
 
 TEST(logging, LOG_DEBUG_enabled) {
-  CHECK_LOG_ENABLED(DEBUG);
+  ASSERT_NO_FATAL_FAILURE(CHECK_LOG_ENABLED(DEBUG));
 }
 
 TEST(logging, LOG_VERBOSE_disabled) {
@@ -390,28 +397,28 @@
 }
 
 TEST(logging, LOG_VERBOSE_enabled) {
-  CHECK_LOG_ENABLED(VERBOSE);
+  ASSERT_NO_FATAL_FAILURE(CHECK_LOG_ENABLED(VERBOSE));
 }
 
 #undef CHECK_LOG_DISABLED
 #undef CHECK_LOG_ENABLED
 
-
 TEST(logging, LOG_complex_param) {
-#define CHECK_LOG_COMBINATION(use_scoped_log_severity_info, use_logging_severity_info)             \
-  {                                                                                                \
-    android::base::ScopedLogSeverity sls(                                                          \
-        (use_scoped_log_severity_info) ? ::android::base::INFO : ::android::base::WARNING);        \
-    CapturedStderr cap;                                                                            \
-    LOG((use_logging_severity_info) ? ::android::base::INFO : ::android::base::WARNING)            \
-        << "foobar";                                                                               \
-    if ((use_scoped_log_severity_info) || !(use_logging_severity_info)) {                          \
-      CheckMessage(cap,                                                                            \
-                   (use_logging_severity_info) ? ::android::base::INFO : ::android::base::WARNING, \
-                   "foobar");                                                                      \
-    } else {                                                                                       \
-      ASSERT_EQ(0, lseek(cap.fd(), 0, SEEK_CUR));                                                  \
-    }                                                                                              \
+#define CHECK_LOG_COMBINATION(use_scoped_log_severity_info, use_logging_severity_info)         \
+  {                                                                                            \
+    android::base::ScopedLogSeverity sls(                                                      \
+        (use_scoped_log_severity_info) ? ::android::base::INFO : ::android::base::WARNING);    \
+    CapturedStderr cap;                                                                        \
+    LOG((use_logging_severity_info) ? ::android::base::INFO : ::android::base::WARNING)        \
+        << "foobar";                                                                           \
+    if ((use_scoped_log_severity_info) || !(use_logging_severity_info)) {                      \
+      ASSERT_NO_FATAL_FAILURE(CheckMessage(                                                    \
+          cap, (use_logging_severity_info) ? ::android::base::INFO : ::android::base::WARNING, \
+          "foobar"));                                                                          \
+    } else {                                                                                   \
+      cap.Stop();                                                                              \
+      ASSERT_EQ("", cap.str());                                                                \
+    }                                                                                          \
   }
 
   CHECK_LOG_COMBINATION(false,false);
@@ -429,7 +436,7 @@
   LOG(INFO) << (errno = 67890);
   EXPECT_EQ(12345, errno) << "errno was not restored";
 
-  CheckMessage(cap, android::base::INFO, "67890");
+  ASSERT_NO_FATAL_FAILURE(CheckMessage(cap, android::base::INFO, "67890"));
 }
 
 TEST(logging, PLOG_does_not_clobber_errno) {
@@ -438,7 +445,7 @@
   PLOG(INFO) << (errno = 67890);
   EXPECT_EQ(12345, errno) << "errno was not restored";
 
-  CheckMessage(cap, android::base::INFO, "67890");
+  ASSERT_NO_FATAL_FAILURE(CheckMessage(cap, android::base::INFO, "67890"));
 }
 
 TEST(logging, LOG_does_not_have_dangling_if) {
@@ -464,19 +471,21 @@
   EXPECT_FALSE(flag) << "LOG macro probably has a dangling if with no else";
 }
 
-#define CHECK_PLOG_DISABLED(severity) \
-  { \
+#define CHECK_PLOG_DISABLED(severity)                            \
+  {                                                              \
     android::base::ScopedLogSeverity sls1(android::base::FATAL); \
-    CapturedStderr cap1; \
-    PLOG(severity) << "foo bar"; \
-    ASSERT_EQ(0, lseek(cap1.fd(), 0, SEEK_CUR)); \
-  } \
-  { \
+    CapturedStderr cap1;                                         \
+    PLOG(severity) << "foo bar";                                 \
+    cap1.Stop();                                                 \
+    ASSERT_EQ("", cap1.str());                                   \
+  }                                                              \
+  {                                                              \
     android::base::ScopedLogSeverity sls1(android::base::FATAL); \
-    CapturedStderr cap1; \
-    PLOG(severity) << "foo bar"; \
-    ASSERT_EQ(0, lseek(cap1.fd(), 0, SEEK_CUR)); \
-  } \
+    CapturedStderr cap1;                                         \
+    PLOG(severity) << "foo bar";                                 \
+    cap1.Stop();                                                 \
+    ASSERT_EQ("", cap1.str());                                   \
+  }
 
 #define CHECK_PLOG_ENABLED(severity) \
   { \
@@ -504,7 +513,7 @@
 }
 
 TEST(logging, PLOG_FATAL_WITHOUT_ABORT_enabled) {
-  CHECK_PLOG_ENABLED(FATAL_WITHOUT_ABORT);
+  ASSERT_NO_FATAL_FAILURE(CHECK_PLOG_ENABLED(FATAL_WITHOUT_ABORT));
 }
 
 TEST(logging, PLOG_ERROR_disabled) {
@@ -512,7 +521,7 @@
 }
 
 TEST(logging, PLOG_ERROR_enabled) {
-  CHECK_PLOG_ENABLED(ERROR);
+  ASSERT_NO_FATAL_FAILURE(CHECK_PLOG_ENABLED(ERROR));
 }
 
 TEST(logging, PLOG_WARNING_disabled) {
@@ -520,7 +529,7 @@
 }
 
 TEST(logging, PLOG_WARNING_enabled) {
-  CHECK_PLOG_ENABLED(WARNING);
+  ASSERT_NO_FATAL_FAILURE(CHECK_PLOG_ENABLED(WARNING));
 }
 
 TEST(logging, PLOG_INFO_disabled) {
@@ -528,7 +537,7 @@
 }
 
 TEST(logging, PLOG_INFO_enabled) {
-  CHECK_PLOG_ENABLED(INFO);
+  ASSERT_NO_FATAL_FAILURE(CHECK_PLOG_ENABLED(INFO));
 }
 
 TEST(logging, PLOG_DEBUG_disabled) {
@@ -536,7 +545,7 @@
 }
 
 TEST(logging, PLOG_DEBUG_enabled) {
-  CHECK_PLOG_ENABLED(DEBUG);
+  ASSERT_NO_FATAL_FAILURE(CHECK_PLOG_ENABLED(DEBUG));
 }
 
 TEST(logging, PLOG_VERBOSE_disabled) {
@@ -544,7 +553,7 @@
 }
 
 TEST(logging, PLOG_VERBOSE_enabled) {
-  CHECK_PLOG_ENABLED(VERBOSE);
+  ASSERT_NO_FATAL_FAILURE(CHECK_PLOG_ENABLED(VERBOSE));
 }
 
 #undef CHECK_PLOG_DISABLED
@@ -557,7 +566,7 @@
   CapturedStderr cap;
   errno = ENOENT;
   UNIMPLEMENTED(ERROR);
-  CheckMessage(cap, android::base::ERROR, expected.c_str());
+  ASSERT_NO_FATAL_FAILURE(CheckMessage(cap, android::base::ERROR, expected.c_str()));
 }
 
 static void NoopAborter(const char* msg ATTRIBUTE_UNUSED) {
@@ -565,17 +574,19 @@
 }
 
 TEST(logging, LOG_FATAL_NOOP_ABORTER) {
+  CapturedStderr cap;
   {
     android::base::SetAborter(NoopAborter);
 
     android::base::ScopedLogSeverity sls(android::base::ERROR);
-    CapturedStderr cap;
     LOG(FATAL) << "foobar";
-    CheckMessage(cap, android::base::FATAL, "foobar");
-    CheckMessage(cap, android::base::ERROR, "called noop");
+    cap.Stop();
 
     android::base::SetAborter(android::base::DefaultAborter);
   }
+  std::string output = cap.str();
+  ASSERT_NO_FATAL_FAILURE(CheckMessage(output, android::base::FATAL, "foobar"));
+  ASSERT_NO_FATAL_FAILURE(CheckMessage(output, android::base::ERROR, "called noop"));
 
   ASSERT_DEATH({SuppressAbortUI(); LOG(FATAL) << "foobar";}, "foobar");
 }
@@ -619,25 +630,21 @@
     LOG(INFO) << expected_msg;
     android::base::SetDefaultTag(old_default_tag);
   }
-  CheckMessage(cap, android::base::LogSeverity::INFO, expected_msg, expected_tag);
+  ASSERT_NO_FATAL_FAILURE(
+      CheckMessage(cap, android::base::LogSeverity::INFO, expected_msg, expected_tag));
 }
 
 TEST(logging, StdioLogger) {
-  std::string err_str;
-  std::string out_str;
-  {
-    CapturedStderr cap_err;
-    CapturedStdout cap_out;
-    android::base::SetLogger(android::base::StdioLogger);
-    LOG(INFO) << "out";
-    LOG(ERROR) << "err";
-    err_str = cap_err.str();
-    out_str = cap_out.str();
-  }
+  CapturedStderr cap_err;
+  CapturedStdout cap_out;
+  android::base::SetLogger(android::base::StdioLogger);
+  LOG(INFO) << "out";
+  LOG(ERROR) << "err";
+  cap_err.Stop();
+  cap_out.Stop();
 
   // For INFO we expect just the literal "out\n".
-  ASSERT_EQ("out\n", out_str) << out_str;
+  ASSERT_EQ("out\n", cap_out.str());
   // Whereas ERROR logging includes the program name.
-  ASSERT_EQ(android::base::Basename(android::base::GetExecutablePath()) + ": err\n", err_str)
-      << err_str;
+  ASSERT_EQ(android::base::Basename(android::base::GetExecutablePath()) + ": err\n", cap_err.str());
 }
diff --git a/base/parseint_test.cpp b/base/parseint_test.cpp
index b8cf654..e449c33 100644
--- a/base/parseint_test.cpp
+++ b/base/parseint_test.cpp
@@ -16,15 +16,22 @@
 
 #include "android-base/parseint.h"
 
+#include <errno.h>
+
 #include <gtest/gtest.h>
 
 TEST(parseint, signed_smoke) {
+  errno = 0;
   int i = 0;
   ASSERT_FALSE(android::base::ParseInt("x", &i));
+  ASSERT_EQ(EINVAL, errno);
+  errno = 0;
   ASSERT_FALSE(android::base::ParseInt("123x", &i));
+  ASSERT_EQ(EINVAL, errno);
 
   ASSERT_TRUE(android::base::ParseInt("123", &i));
   ASSERT_EQ(123, i);
+  ASSERT_EQ(0, errno);
   i = 0;
   EXPECT_TRUE(android::base::ParseInt("  123", &i));
   EXPECT_EQ(123, i);
@@ -40,26 +47,43 @@
 
   ASSERT_TRUE(android::base::ParseInt("12", &i, 0, 15));
   ASSERT_EQ(12, i);
+  errno = 0;
   ASSERT_FALSE(android::base::ParseInt("-12", &i, 0, 15));
+  ASSERT_EQ(ERANGE, errno);
+  errno = 0;
   ASSERT_FALSE(android::base::ParseInt("16", &i, 0, 15));
+  ASSERT_EQ(ERANGE, errno);
 
+  errno = 0;
   ASSERT_FALSE(android::base::ParseInt<int>("x", nullptr));
+  ASSERT_EQ(EINVAL, errno);
+  errno = 0;
   ASSERT_FALSE(android::base::ParseInt<int>("123x", nullptr));
+  ASSERT_EQ(EINVAL, errno);
   ASSERT_TRUE(android::base::ParseInt<int>("1234", nullptr));
 }
 
 TEST(parseint, unsigned_smoke) {
+  errno = 0;
   unsigned int i = 0u;
   ASSERT_FALSE(android::base::ParseUint("x", &i));
+  ASSERT_EQ(EINVAL, errno);
+  errno = 0;
   ASSERT_FALSE(android::base::ParseUint("123x", &i));
+  ASSERT_EQ(EINVAL, errno);
 
   ASSERT_TRUE(android::base::ParseUint("123", &i));
   ASSERT_EQ(123u, i);
+  ASSERT_EQ(0, errno);
   i = 0u;
   EXPECT_TRUE(android::base::ParseUint("  123", &i));
   EXPECT_EQ(123u, i);
+  errno = 0;
   ASSERT_FALSE(android::base::ParseUint("-123", &i));
+  EXPECT_EQ(EINVAL, errno);
+  errno = 0;
   EXPECT_FALSE(android::base::ParseUint("  -123", &i));
+  EXPECT_EQ(EINVAL, errno);
 
   unsigned short s = 0u;
   ASSERT_TRUE(android::base::ParseUint("1234", &s));
@@ -67,16 +91,28 @@
 
   ASSERT_TRUE(android::base::ParseUint("12", &i, 15u));
   ASSERT_EQ(12u, i);
+  errno = 0;
   ASSERT_FALSE(android::base::ParseUint("-12", &i, 15u));
+  ASSERT_EQ(EINVAL, errno);
+  errno = 0;
   ASSERT_FALSE(android::base::ParseUint("16", &i, 15u));
+  ASSERT_EQ(ERANGE, errno);
 
+  errno = 0;
   ASSERT_FALSE(android::base::ParseUint<unsigned short>("x", nullptr));
+  ASSERT_EQ(EINVAL, errno);
+  errno = 0;
   ASSERT_FALSE(android::base::ParseUint<unsigned short>("123x", nullptr));
+  ASSERT_EQ(EINVAL, errno);
   ASSERT_TRUE(android::base::ParseUint<unsigned short>("1234", nullptr));
 
+  errno = 0;
   unsigned long long int lli;
   EXPECT_FALSE(android::base::ParseUint("-123", &lli));
+  EXPECT_EQ(EINVAL, errno);
+  errno = 0;
   EXPECT_FALSE(android::base::ParseUint("  -123", &lli));
+  EXPECT_EQ(EINVAL, errno);
 }
 
 TEST(parseint, no_implicit_octal) {
diff --git a/base/test_utils.cpp b/base/test_utils.cpp
index 5096369..4d9466b 100644
--- a/base/test_utils.cpp
+++ b/base/test_utils.cpp
@@ -126,11 +126,13 @@
 }
 
 CapturedStdFd::CapturedStdFd(int std_fd) : std_fd_(std_fd), old_fd_(-1) {
-  Init();
+  Start();
 }
 
 CapturedStdFd::~CapturedStdFd() {
-  Reset();
+  if (old_fd_ != -1) {
+    Stop();
+  }
 }
 
 int CapturedStdFd::fd() const {
@@ -144,19 +146,28 @@
   return result;
 }
 
-void CapturedStdFd::Init() {
+void CapturedStdFd::Reset() {
+  // Do not reset while capturing.
+  CHECK_EQ(-1, old_fd_);
+  CHECK_EQ(0, TEMP_FAILURE_RETRY(lseek(fd(), 0, SEEK_SET)));
+  CHECK_EQ(0, ftruncate(fd(), 0));
+}
+
+void CapturedStdFd::Start() {
 #if defined(_WIN32)
   // On Windows, stderr is often buffered, so make sure it is unbuffered so
   // that we can immediately read back what was written to stderr.
-  if (std_fd_ == STDERR_FILENO) CHECK_EQ(0, setvbuf(stderr, NULL, _IONBF, 0));
+  if (std_fd_ == STDERR_FILENO) CHECK_EQ(0, setvbuf(stderr, nullptr, _IONBF, 0));
 #endif
   old_fd_ = dup(std_fd_);
   CHECK_NE(-1, old_fd_);
   CHECK_NE(-1, dup2(fd(), std_fd_));
 }
 
-void CapturedStdFd::Reset() {
+void CapturedStdFd::Stop() {
+  CHECK_NE(-1, old_fd_);
   CHECK_NE(-1, dup2(old_fd_, std_fd_));
-  CHECK_EQ(0, close(old_fd_));
+  close(old_fd_);
+  old_fd_ = -1;
   // Note: cannot restore prior setvbuf() setting.
 }
diff --git a/base/test_utils_test.cpp b/base/test_utils_test.cpp
index 597271a..15a79dd 100644
--- a/base/test_utils_test.cpp
+++ b/base/test_utils_test.cpp
@@ -14,6 +14,8 @@
  * limitations under the License.
  */
 
+#include <stdio.h>
+
 #include "android-base/test_utils.h"
 
 #include <gtest/gtest-spi.h>
@@ -42,5 +44,43 @@
   EXPECT_NONFATAL_FAILURE(EXPECT_NOT_MATCH("foobar", R"(foobar)"), "regex mismatch");
 }
 
+TEST(TestUtilsTest, CaptureStdout_smoke) {
+  CapturedStdout cap;
+  printf("This should be captured.\n");
+  cap.Stop();
+  printf("This will not be captured.\n");
+  ASSERT_EQ("This should be captured.\n", cap.str());
+
+  cap.Start();
+  printf("And this text should be captured too.\n");
+  cap.Stop();
+  ASSERT_EQ("This should be captured.\nAnd this text should be captured too.\n", cap.str());
+
+  printf("Still not going to be captured.\n");
+  cap.Reset();
+  cap.Start();
+  printf("Only this will be captured.\n");
+  ASSERT_EQ("Only this will be captured.\n", cap.str());
+}
+
+TEST(TestUtilsTest, CaptureStderr_smoke) {
+  CapturedStderr cap;
+  fprintf(stderr, "This should be captured.\n");
+  cap.Stop();
+  fprintf(stderr, "This will not be captured.\n");
+  ASSERT_EQ("This should be captured.\n", cap.str());
+
+  cap.Start();
+  fprintf(stderr, "And this text should be captured too.\n");
+  cap.Stop();
+  ASSERT_EQ("This should be captured.\nAnd this text should be captured too.\n", cap.str());
+
+  fprintf(stderr, "Still not going to be captured.\n");
+  cap.Reset();
+  cap.Start();
+  fprintf(stderr, "Only this will be captured.\n");
+  ASSERT_EQ("Only this will be captured.\n", cap.str());
+}
+
 }  // namespace base
 }  // namespace android
diff --git a/debuggerd/client/debuggerd_client.cpp b/debuggerd/client/debuggerd_client.cpp
index cb7cbbe..77f3515 100644
--- a/debuggerd/client/debuggerd_client.cpp
+++ b/debuggerd/client/debuggerd_client.cpp
@@ -143,12 +143,16 @@
   ssize_t rc =
       TEMP_FAILURE_RETRY(recv(set_timeout(sockfd.get()), &response, sizeof(response), MSG_TRUNC));
   if (rc == 0) {
-    LOG(ERROR) << "libdebuggerd_client: failed to read response from tombstoned: timeout reached?";
+    LOG(ERROR) << "libdebuggerd_client: failed to read initial response from tombstoned: "
+               << "timeout reached?";
+    return false;
+  } else if (rc == -1) {
+    PLOG(ERROR) << "libdebuggerd_client: failed to read initial response from tombstoned";
     return false;
   } else if (rc != sizeof(response)) {
-    LOG(ERROR)
-        << "libdebuggerd_client: received packet of unexpected length from tombstoned: expected "
-        << sizeof(response) << ", received " << rc;
+    LOG(ERROR) << "libdebuggerd_client: received packet of unexpected length from tombstoned while "
+                  "reading initial response: expected "
+               << sizeof(response) << ", received " << rc;
     return false;
   }
 
@@ -164,12 +168,16 @@
 
   rc = TEMP_FAILURE_RETRY(recv(set_timeout(sockfd.get()), &response, sizeof(response), MSG_TRUNC));
   if (rc == 0) {
-    LOG(ERROR) << "libdebuggerd_client: failed to read response from tombstoned: timeout reached?";
+    LOG(ERROR) << "libdebuggerd_client: failed to read status response from tombstoned: "
+                  "timeout reached?";
+    return false;
+  } else if (rc == -1) {
+    PLOG(ERROR) << "libdebuggerd_client: failed to read status response from tombstoned";
     return false;
   } else if (rc != sizeof(response)) {
-    LOG(ERROR)
-      << "libdebuggerd_client: received packet of unexpected length from tombstoned: expected "
-      << sizeof(response) << ", received " << rc;
+    LOG(ERROR) << "libdebuggerd_client: received packet of unexpected length from tombstoned while "
+                  "reading confirmation response: expected "
+               << sizeof(response) << ", received " << rc;
     return false;
   }
 
diff --git a/debuggerd/debuggerd_test.cpp b/debuggerd/debuggerd_test.cpp
index dfb7a6a..bea8b43 100644
--- a/debuggerd/debuggerd_test.cpp
+++ b/debuggerd/debuggerd_test.cpp
@@ -29,6 +29,7 @@
 #include <regex>
 #include <thread>
 
+#include <android/fdsan.h>
 #include <android/set_abort_message.h>
 
 #include <android-base/file.h>
@@ -36,6 +37,7 @@
 #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 <android-base/test_utils.h>
 #include <android-base/unique_fd.h>
@@ -586,9 +588,28 @@
     "/system/etc/seccomp_policy/crash_dump." ABI_STRING ".policy";
 
 static pid_t seccomp_fork_impl(void (*prejail)()) {
-  unique_fd policy_fd(open(kDebuggerdSeccompPolicy, O_RDONLY | O_CLOEXEC));
-  if (policy_fd == -1) {
-    LOG(FATAL) << "failed to open policy " << kDebuggerdSeccompPolicy;
+  std::string policy;
+  if (!android::base::ReadFileToString(kDebuggerdSeccompPolicy, &policy)) {
+    PLOG(FATAL) << "failed to read policy file";
+  }
+
+  // Allow a bunch of syscalls used by the tests.
+  policy += "\nclone: 1";
+  policy += "\nsigaltstack: 1";
+  policy += "\nnanosleep: 1";
+
+  FILE* tmp_file = tmpfile();
+  if (!tmp_file) {
+    PLOG(FATAL) << "tmpfile failed";
+  }
+
+  unique_fd tmp_fd(dup(fileno(tmp_file)));
+  if (!android::base::WriteStringToFd(policy, tmp_fd.get())) {
+    PLOG(FATAL) << "failed to write policy to tmpfile";
+  }
+
+  if (lseek(tmp_fd.get(), 0, SEEK_SET) != 0) {
+    PLOG(FATAL) << "failed to seek tmp_fd";
   }
 
   ScopedMinijail jail{minijail_new()};
@@ -599,7 +620,7 @@
   minijail_no_new_privs(jail.get());
   minijail_log_seccomp_filter_failures(jail.get());
   minijail_use_seccomp_filter(jail.get());
-  minijail_parse_seccomp_filters_from_fd(jail.get(), policy_fd.release());
+  minijail_parse_seccomp_filters_from_fd(jail.get(), tmp_fd.release());
 
   pid_t result = fork();
   if (result == -1) {
@@ -734,6 +755,16 @@
   ASSERT_BACKTRACE_FRAME(result, "raise_debugger_signal");
 }
 
+extern "C" void foo() {
+  LOG(INFO) << "foo";
+  std::this_thread::sleep_for(1s);
+}
+
+extern "C" void bar() {
+  LOG(INFO) << "bar";
+  std::this_thread::sleep_for(1s);
+}
+
 TEST_F(CrasherTest, seccomp_backtrace) {
   int intercept_result;
   unique_fd output_fd;
@@ -741,6 +772,11 @@
   static const auto dump_type = kDebuggerdNativeBacktrace;
   StartProcess(
       []() {
+        std::thread a(foo);
+        std::thread b(bar);
+
+        std::this_thread::sleep_for(100ms);
+
         raise_debugger_signal(dump_type);
         _exit(0);
       },
@@ -755,6 +791,8 @@
   std::string result;
   ConsumeFd(std::move(output_fd), &result);
   ASSERT_BACKTRACE_FRAME(result, "raise_debugger_signal");
+  ASSERT_BACKTRACE_FRAME(result, "foo");
+  ASSERT_BACKTRACE_FRAME(result, "bar");
 }
 
 TEST_F(CrasherTest, seccomp_crash_logcat) {
@@ -801,6 +839,31 @@
   AssertDeath(SIGABRT);
 }
 
+TEST_F(CrasherTest, fdsan_warning_abort_message) {
+  int intercept_result;
+  unique_fd output_fd;
+
+  StartProcess([]() {
+    android_fdsan_set_error_level(ANDROID_FDSAN_ERROR_LEVEL_WARN_ONCE);
+    unique_fd fd(open("/dev/null", O_RDONLY | O_CLOEXEC));
+    if (fd == -1) {
+      abort();
+    }
+    close(fd.get());
+    _exit(0);
+  });
+
+  StartIntercept(&output_fd);
+  FinishCrasher();
+  AssertDeath(0);
+  FinishIntercept(&intercept_result);
+  ASSERT_EQ(1, intercept_result) << "tombstoned reported failure";
+
+  std::string result;
+  ConsumeFd(std::move(output_fd), &result);
+  ASSERT_MATCH(result, "Abort message: 'attempted to close");
+}
+
 TEST(crash_dump, zombie) {
   pid_t forkpid = fork();
 
@@ -991,3 +1054,42 @@
   ASSERT_TRUE(android::base::ReadFully(output_fd.get(), outbuf, sizeof(outbuf)));
   ASSERT_STREQ("any", outbuf);
 }
+
+TEST(tombstoned, interceptless_backtrace) {
+  // Generate 50 backtraces, and then check to see that we haven't created 50 new tombstones.
+  auto get_tombstone_timestamps = []() -> std::map<int, time_t> {
+    std::map<int, time_t> result;
+    for (int i = 0; i < 99; ++i) {
+      std::string path = android::base::StringPrintf("/data/tombstones/tombstone_%02d", i);
+      struct stat st;
+      if (stat(path.c_str(), &st) == 0) {
+        result[i] = st.st_mtim.tv_sec;
+      }
+    }
+    return result;
+  };
+
+  auto before = get_tombstone_timestamps();
+  for (int i = 0; i < 50; ++i) {
+    raise_debugger_signal(kDebuggerdNativeBacktrace);
+  }
+  auto after = get_tombstone_timestamps();
+
+  int diff = 0;
+  for (int i = 0; i < 99; ++i) {
+    if (after.count(i) == 0) {
+      continue;
+    }
+    if (before.count(i) == 0) {
+      ++diff;
+      continue;
+    }
+    if (before[i] != after[i]) {
+      ++diff;
+    }
+  }
+
+  // We can't be sure that nothing's crash looping in the background.
+  // This should be good enough, though...
+  ASSERT_LT(diff, 10) << "too many new tombstones; is something crashing in the background?";
+}
diff --git a/debuggerd/handler/debuggerd_fallback.cpp b/debuggerd/handler/debuggerd_fallback.cpp
index 079a574..ed7423b 100644
--- a/debuggerd/handler/debuggerd_fallback.cpp
+++ b/debuggerd/handler/debuggerd_fallback.cpp
@@ -47,6 +47,7 @@
 #include <unwindstack/Regs.h>
 
 #include "debuggerd/handler.h"
+#include "handler/fallback.h"
 #include "tombstoned/tombstoned.h"
 #include "util.h"
 
@@ -187,7 +188,7 @@
 static void trace_handler(siginfo_t* info, ucontext_t* ucontext) {
   static std::atomic<uint64_t> trace_output(pack_thread_fd(-1, -1));
 
-  if (info->si_value.sival_int == ~0) {
+  if (info->si_value.sival_ptr == kDebuggerdFallbackSivalPtrRequestDump) {
     // Asked to dump by the original signal recipient.
     uint64_t val = trace_output.load();
     auto [tid, fd] = unpack_thread_fd(val);
@@ -259,7 +260,7 @@
 
         siginfo_t siginfo = {};
         siginfo.si_code = SI_QUEUE;
-        siginfo.si_value.sival_int = ~0;
+        siginfo.si_value.sival_ptr = kDebuggerdFallbackSivalPtrRequestDump;
         siginfo.si_pid = getpid();
         siginfo.si_uid = getuid();
 
@@ -331,7 +332,7 @@
 
 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_int != 0) {
+  if (info->si_signo == DEBUGGER_SIGNAL && 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 91e6f71..a064ca0 100644
--- a/debuggerd/handler/debuggerd_handler.cpp
+++ b/debuggerd/handler/debuggerd_handler.cpp
@@ -58,6 +58,8 @@
 #include "dump_type.h"
 #include "protocol.h"
 
+#include "handler/fallback.h"
+
 using android::base::Pipe;
 
 // We muck with our fds in a 'thread' that doesn't share the same fd table.
@@ -457,14 +459,14 @@
     info = nullptr;
   }
 
-  struct siginfo si = {};
+  struct siginfo dummy_info = {};
   if (!info) {
-    memset(&si, 0, sizeof(si));
-    si.si_signo = signal_number;
-    si.si_code = SI_USER;
-    si.si_pid = __getpid();
-    si.si_uid = getuid();
-    info = &si;
+    memset(&dummy_info, 0, sizeof(dummy_info));
+    dummy_info.si_signo = signal_number;
+    dummy_info.si_code = SI_USER;
+    dummy_info.si_pid = __getpid();
+    dummy_info.si_uid = getuid();
+    info = &dummy_info;
   } else if (info->si_code >= 0 || info->si_code == SI_TKILL) {
     // rt_tgsigqueueinfo(2)'s documentation appears to be incorrect on kernels
     // that contain commit 66dd34a (3.9+). The manpage claims to only allow
@@ -473,8 +475,20 @@
   }
 
   void* abort_message = nullptr;
-  if (signal_number != DEBUGGER_SIGNAL && g_callbacks.get_abort_message) {
-    abort_message = g_callbacks.get_abort_message();
+  uintptr_t si_val = reinterpret_cast<uintptr_t>(info->si_ptr);
+  if (signal_number == DEBUGGER_SIGNAL) {
+    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.
+      if (si_val != kDebuggerdFallbackSivalUintptrRequestDump) {
+        abort_message = reinterpret_cast<void*>(si_val & ~1);
+        info->si_ptr = reinterpret_cast<void*>(si_val & 1);
+      }
+    }
+  } else {
+    if (g_callbacks.get_abort_message) {
+      abort_message = g_callbacks.get_abort_message();
+    }
   }
 
   // If sival_int is ~0, it means that the fallback handler has been called
@@ -482,7 +496,8 @@
   // of a specific thread. It is possible that the prctl call might return 1,
   // then return 0 in subsequent calls, so check the sival_int to determine if
   // the fallback handler should be called first.
-  if (info->si_value.sival_int == ~0 || prctl(PR_GET_NO_NEW_PRIVS, 0, 0, 0, 0) == 1) {
+  if (si_val == kDebuggerdFallbackSivalUintptrRequestDump ||
+      prctl(PR_GET_NO_NEW_PRIVS, 0, 0, 0, 0) == 1) {
     // This check might be racy if another thread sets NO_NEW_PRIVS, but this should be unlikely,
     // you can only set NO_NEW_PRIVS to 1, and the effect should be at worst a single missing
     // ANR trace.
diff --git a/debuggerd/handler/fallback.h b/debuggerd/handler/fallback.h
new file mode 100644
index 0000000..597f582
--- /dev/null
+++ b/debuggerd/handler/fallback.h
@@ -0,0 +1,22 @@
+/*
+ * 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.
+ */
+
+#pragma once
+
+#include <stdint.h>
+
+static void* const kDebuggerdFallbackSivalPtrRequestDump = reinterpret_cast<void*>(~0UL);
+static const uintptr_t kDebuggerdFallbackSivalUintptrRequestDump = ~0UL;
diff --git a/debuggerd/libdebuggerd/open_files_list.cpp b/debuggerd/libdebuggerd/open_files_list.cpp
index 03e4e8e..743a2e7 100644
--- a/debuggerd/libdebuggerd/open_files_list.cpp
+++ b/debuggerd/libdebuggerd/open_files_list.cpp
@@ -18,6 +18,7 @@
 
 #include "libdebuggerd/open_files_list.h"
 
+#include <android/fdsan.h>
 #include <dirent.h>
 #include <errno.h>
 #include <stdio.h>
@@ -122,8 +123,10 @@
     const std::optional<std::string>& path = entry.path;
     const std::optional<uint64_t>& fdsan_owner = entry.fdsan_owner;
     if (path && fdsan_owner) {
-      _LOG(log, logtype::OPEN_FILES, "%sfd %i: %s (owned by %#" PRIx64 ")\n", prefix, fd,
-           path->c_str(), *fdsan_owner);
+      const char* type = android_fdsan_get_tag_type(*fdsan_owner);
+      uint64_t value = android_fdsan_get_tag_value(*fdsan_owner);
+      _LOG(log, logtype::OPEN_FILES, "%sfd %i: %s (owned by %s %#" PRIx64 ")\n", prefix, fd,
+           path->c_str(), type, value);
     } else if (path && !fdsan_owner) {
       _LOG(log, logtype::OPEN_FILES, "%sfd %i: %s (unowned)\n", prefix, fd, path->c_str());
     } else if (!path && fdsan_owner) {
diff --git a/debuggerd/tombstoned/tombstoned.cpp b/debuggerd/tombstoned/tombstoned.cpp
index 15ae406..ad92067 100644
--- a/debuggerd/tombstoned/tombstoned.cpp
+++ b/debuggerd/tombstoned/tombstoned.cpp
@@ -212,8 +212,13 @@
   bool intercepted =
       intercept_manager->GetIntercept(crash->crash_pid, crash->crash_type, &output_fd);
   if (!intercepted) {
-    std::tie(crash->crash_tombstone_path, output_fd) = CrashQueue::for_crash(crash)->get_output();
-    crash->crash_tombstone_fd.reset(dup(output_fd.get()));
+    if (crash->crash_type == kDebuggerdNativeBacktrace) {
+      // Don't generate tombstones for native backtrace requests.
+      output_fd.reset(open("/dev/null", O_WRONLY | O_CLOEXEC));
+    } else {
+      std::tie(crash->crash_tombstone_path, output_fd) = CrashQueue::for_crash(crash)->get_output();
+      crash->crash_tombstone_fd.reset(dup(output_fd.get()));
+    }
   }
 
   TombstonedCrashPacket response = {
diff --git a/fastboot/Android.bp b/fastboot/Android.bp
index f32b5d5..6b175af 100644
--- a/fastboot/Android.bp
+++ b/fastboot/Android.bp
@@ -21,67 +21,66 @@
 
     compile_multilib: "first",
     srcs: [
-      "bootimg_utils.cpp",
-      "fs.cpp",
-      "socket.cpp",
-      "tcp.cpp",
-      "udp.cpp",
-      "util.cpp",
-      "fastboot_driver.cpp",
+        "bootimg_utils.cpp",
+        "fs.cpp",
+        "socket.cpp",
+        "tcp.cpp",
+        "udp.cpp",
+        "util.cpp",
+        "fastboot_driver.cpp",
     ],
 
     static_libs: [
-      "libziparchive",
-      "libsparse",
-      "libutils",
-      "liblog",
-      "libz",
-      "libdiagnose_usb",
-      "libbase",
-      "libcutils",
-      "libgtest",
-      "libgtest_main",
-      "libbase",
-      "libadb_host"
+        "libziparchive",
+        "libsparse",
+        "libutils",
+        "liblog",
+        "libz",
+        "libdiagnose_usb",
+        "libbase",
+        "libcutils",
+        "libgtest",
+        "libgtest_main",
+        "libbase",
+        "libadb_host",
     ],
 
     header_libs: [
-      "bootimg_headers"
+        "bootimg_headers",
     ],
 
     export_header_lib_headers: [
-      "bootimg_headers"
+        "bootimg_headers",
     ],
 
-
     target: {
-      linux: {
-        srcs: ["usb_linux.cpp"],
-      },
+        linux: {
+            srcs: ["usb_linux.cpp"],
+        },
 
-      darwin: {
-        srcs: ["usb_osx.cpp"],
+        darwin: {
+            srcs: ["usb_osx.cpp"],
 
-        host_ldlibs: [
-            "-framework CoreFoundation",
-            "-framework IOKit",
-        ],
-      },
+            host_ldlibs: [
+                "-framework CoreFoundation",
+                "-framework IOKit",
+            ],
+        },
 
-      windows: {
-        srcs: ["usb_windows.cpp"],
+        windows: {
+            srcs: ["usb_windows.cpp"],
 
-        host_ldlibs: [
-            "-lws2_32",
-        ],
-      },
+            host_ldlibs: [
+                "-lws2_32",
+            ],
+        },
     },
 
     cflags: [
-      "-Wall",
-      "-Wextra",
-      "-Werror",
-      "-Wunreachable-code",
+        "-Wall",
+        "-Wextra",
+        "-Werror",
+        "-Wunreachable-code",
     ],
 
     export_include_dirs: ["."],
@@ -122,6 +121,7 @@
 
     shared_libs: [
         "android.hardware.boot@1.0",
+        "android.hardware.fastboot@1.0",
         "libadbd",
         "libasyncio",
         "libbase",
@@ -141,3 +141,154 @@
 
     cpp_std: "c++17",
 }
+
+cc_defaults {
+    name: "fastboot_host_defaults",
+
+    use_version_lib: true,
+
+    cflags: [
+        "-Wall",
+        "-Wextra",
+        "-Werror",
+        "-Wunreachable-code",
+    ],
+
+    target: {
+        darwin: {
+            cflags: ["-Wno-unused-parameter"],
+            host_ldlibs: [
+                "-lpthread",
+                "-framework CoreFoundation",
+                "-framework IOKit",
+            ],
+        },
+        windows: {
+            enabled: true,
+
+            host_ldlibs: ["-lws2_32"],
+        },
+    },
+
+    stl: "libc++_static",
+
+    // Don't add anything here, we don't want additional shared dependencies
+    // on the host fastboot tool, and shared libraries that link against libc++
+    // will violate ODR.
+    shared_libs: [],
+
+    header_libs: ["bootimg_headers"],
+    static_libs: [
+        "libziparchive",
+        "libsparse",
+        "libutils",
+        "liblog",
+        "libz",
+        "libdiagnose_usb",
+        "libbase",
+        "libcutils",
+        "libgtest_host",
+    ],
+}
+
+//
+// Build host libfastboot.
+//
+
+cc_library_host_static {
+    name: "libfastboot",
+    defaults: ["fastboot_host_defaults"],
+
+    cpp_std: "c++17",
+    srcs: [
+        "bootimg_utils.cpp",
+        "engine.cpp",
+        "fastboot.cpp",
+        "fs.cpp",
+        "socket.cpp",
+        "tcp.cpp",
+        "udp.cpp",
+        "util.cpp",
+        "fastboot_driver.cpp",
+    ],
+
+    // Only version the final binaries
+    use_version_lib: false,
+    static_libs: ["libbuildversion"],
+
+    generated_headers: ["platform_tools_version"],
+
+    target: {
+        windows: {
+            srcs: ["usb_windows.cpp"],
+
+            include_dirs: ["development/host/windows/usb/api"],
+        },
+        darwin: {
+            srcs: ["usb_osx.cpp"],
+        },
+        linux_glibc: {
+            srcs: ["usb_linux.cpp"],
+        },
+    },
+}
+
+//
+// Build host fastboot / fastboot.exe
+//
+
+cc_binary_host {
+    name: "fastboot",
+    defaults: ["fastboot_host_defaults"],
+
+    srcs: ["main.cpp"],
+    static_libs: ["libfastboot"],
+
+    required: [
+        "mke2fs",
+        "make_f2fs",
+    ],
+
+    target: {
+        not_windows: {
+            required: [
+                "e2fsdroid",
+                "mke2fs.conf",
+                "sload_f2fs",
+            ],
+        },
+        windows: {
+            required: ["AdbWinUsbApi"],
+            shared_libs: ["AdbWinApi"],
+        },
+    },
+}
+
+//
+// Build host fastboot_test.
+//
+
+cc_test_host {
+    name: "fastboot_test",
+    defaults: ["fastboot_host_defaults"],
+
+    srcs: [
+        "fastboot_test.cpp",
+        "socket_mock.cpp",
+        "socket_test.cpp",
+        "tcp_test.cpp",
+        "udp_test.cpp",
+    ],
+
+    static_libs: ["libfastboot"],
+
+    target: {
+        windows: {
+            shared_libs: ["AdbWinApi"],
+        },
+        windows_x86_64: {
+            // Avoid trying to build for win64
+            enabled: false,
+        },
+    },
+}
diff --git a/fastboot/Android.mk b/fastboot/Android.mk
index 7da0a9f..e4c1317 100644
--- a/fastboot/Android.mk
+++ b/fastboot/Android.mk
@@ -14,89 +14,6 @@
 
 LOCAL_PATH:= $(call my-dir)
 
-include $(LOCAL_PATH)/../platform_tools_tool_version.mk
-
-fastboot_cflags := -Wall -Wextra -Werror -Wunreachable-code
-fastboot_cflags += -DFASTBOOT_VERSION="\"$(tool_version)\""
-fastboot_cflags_darwin := -Wno-unused-parameter
-fastboot_ldlibs_darwin := -lpthread -framework CoreFoundation -framework IOKit -framework Carbon
-fastboot_ldlibs_windows := -lws2_32
-# Don't add anything here, we don't want additional shared dependencies
-# on the host fastboot tool, and shared libraries that link against libc++
-# will violate ODR.
-fastboot_shared_libs :=
-fastboot_static_libs := \
-    libziparchive \
-    libsparse \
-    libutils \
-    liblog \
-    libz \
-    libdiagnose_usb \
-    libbase \
-    libcutils \
-    libgtest_host \
-
-fastboot_stl := libc++_static
-
-#
-# Build host libfastboot.
-#
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := libfastboot
-LOCAL_MODULE_HOST_OS := darwin linux windows
-
-LOCAL_SRC_FILES := \
-    bootimg_utils.cpp \
-    engine.cpp \
-    fastboot.cpp \
-    fs.cpp \
-    socket.cpp \
-    tcp.cpp \
-    udp.cpp \
-    util.cpp \
-    fastboot_driver.cpp \
-
-LOCAL_SRC_FILES_darwin := usb_osx.cpp
-LOCAL_SRC_FILES_linux := usb_linux.cpp
-LOCAL_SRC_FILES_windows := usb_windows.cpp
-
-LOCAL_C_INCLUDES_windows := development/host/windows/usb/api
-LOCAL_CFLAGS := $(fastboot_cflags)
-LOCAL_CFLAGS_darwin := $(fastboot_cflags_darwin)
-LOCAL_CPP_STD := c++17
-LOCAL_CXX_STL := $(fastboot_stl)
-LOCAL_HEADER_LIBRARIES := bootimg_headers
-LOCAL_LDLIBS_darwin := $(fastboot_ldlibs_darwin)
-LOCAL_LDLIBS_windows := $(fastboot_ldlibs_windows)
-LOCAL_SHARED_LIBRARIES := $(fastboot_shared_libs)
-LOCAL_STATIC_LIBRARIES := $(fastboot_static_libs)
-include $(BUILD_HOST_STATIC_LIBRARY)
-
-#
-# Build host fastboot / fastboot.exe
-#
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := fastboot
-LOCAL_MODULE_HOST_OS := darwin linux windows
-
-LOCAL_CFLAGS := $(fastboot_cflags)
-LOCAL_CFLAGS_darwin := $(fastboot_cflags_darwin)
-LOCAL_CXX_STL := $(fastboot_stl)
-LOCAL_HEADER_LIBRARIES := bootimg_headers
-LOCAL_LDLIBS_darwin := $(fastboot_ldlibs_darwin)
-LOCAL_LDLIBS_windows := $(fastboot_ldlibs_windows)
-LOCAL_REQUIRED_MODULES := mke2fs make_f2fs
-LOCAL_REQUIRED_MODULES_darwin := e2fsdroid mke2fs.conf sload_f2fs
-LOCAL_REQUIRED_MODULES_linux := e2fsdroid mke2fs.conf sload_f2fs
-LOCAL_REQUIRED_MODULES_windows := AdbWinUsbApi
-LOCAL_SRC_FILES := main.cpp
-LOCAL_SHARED_LIBRARIES := $(fastboot_shared_libs)
-LOCAL_SHARED_LIBRARIES_windows := AdbWinApi
-LOCAL_STATIC_LIBRARIES := libfastboot $(fastboot_static_libs)
-include $(BUILD_HOST_EXECUTABLE)
-
 #
 # Package fastboot-related executables.
 #
@@ -111,30 +28,3 @@
 $(call dist-for-goals,dist_files sdk win_sdk,$(ALL_MODULES.host_cross_fastboot.BUILT))
 endif
 my_dist_files :=
-
-#
-# Build host fastboot_test.
-#
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := fastboot_test
-LOCAL_MODULE_HOST_OS := darwin linux windows
-LOCAL_MODULE_HOST_CROSS_ARCH := x86 # Avoid trying to build for win64.
-
-LOCAL_SRC_FILES := \
-    fastboot_test.cpp \
-    socket_mock.cpp \
-    socket_test.cpp \
-    tcp_test.cpp \
-    udp_test.cpp \
-
-LOCAL_CFLAGS := $(fastboot_cflags)
-LOCAL_CFLAGS_darwin := $(fastboot_cflags_darwin)
-LOCAL_CXX_STL := $(fastboot_stl)
-LOCAL_HEADER_LIBRARIES := bootimg_headers
-LOCAL_LDLIBS_darwin := $(fastboot_ldlibs_darwin)
-LOCAL_LDLIBS_windows := $(fastboot_ldlibs_windows)
-LOCAL_SHARED_LIBRARIES := $(fastboot_shared_libs)
-LOCAL_SHARED_LIBRARIES_windows := AdbWinApi
-LOCAL_STATIC_LIBRARIES := libfastboot $(fastboot_static_libs)
-include $(BUILD_HOST_NATIVE_TEST)
diff --git a/fastboot/README.md b/fastboot/README.md
index 15b5965..c224448 100644
--- a/fastboot/README.md
+++ b/fastboot/README.md
@@ -136,10 +136,6 @@
                        should not support "upload" unless it supports an
                        oem command that requires "upload" capabilities.
 
-    verify:%08x        Send a digital signature to verify the downloaded
-                       data.  Required if the bootloader is "secure"
-                       otherwise "flash" and "boot" will be ignored.
-
     flash:%s           Write the previously downloaded image to the
                        named partition (if possible).
 
@@ -159,8 +155,6 @@
                        the bootloader and then upgrading other partitions
                        using the new bootloader.
 
-    powerdown          Power off the device.
-
 
 
 ## Client Variables
diff --git a/fastboot/constants.h b/fastboot/constants.h
index 6542b83..57e25fc 100644
--- a/fastboot/constants.h
+++ b/fastboot/constants.h
@@ -18,7 +18,6 @@
 #define FB_CMD_GETVAR "getvar"
 #define FB_CMD_DOWNLOAD "download"
 #define FB_CMD_UPLOAD "upload"
-#define FB_CMD_VERIFY "verify"
 #define FB_CMD_FLASH "flash"
 #define FB_CMD_ERASE "erase"
 #define FB_CMD_BOOT "boot"
@@ -29,7 +28,6 @@
 #define FB_CMD_REBOOT_BOOTLOADER "reboot-bootloader"
 #define FB_CMD_REBOOT_RECOVERY "reboot-recovery"
 #define FB_CMD_REBOOT_FASTBOOT "reboot-fastboot"
-#define FB_CMD_POWERDOWN "powerdown"
 #define FB_CMD_CREATE_PARTITION "create-logical-partition"
 #define FB_CMD_DELETE_PARTITION "delete-logical-partition"
 #define FB_CMD_RESIZE_PARTITION "resize-logical-partition"
@@ -55,7 +53,9 @@
 #define FB_VAR_HAS_SLOT "has-slot"
 #define FB_VAR_SLOT_COUNT "slot-count"
 #define FB_VAR_PARTITION_SIZE "partition-size"
+#define FB_VAR_PARTITION_TYPE "partition-type"
 #define FB_VAR_SLOT_SUCCESSFUL "slot-successful"
 #define FB_VAR_SLOT_UNBOOTABLE "slot-unbootable"
 #define FB_VAR_IS_LOGICAL "is-logical"
 #define FB_VAR_IS_USERSPACE "is-userspace"
+#define FB_VAR_HW_REVISION "hw-revision"
diff --git a/fastboot/device/commands.cpp b/fastboot/device/commands.cpp
index 1e853bf..0ec0994 100644
--- a/fastboot/device/commands.cpp
+++ b/fastboot/device/commands.cpp
@@ -42,34 +42,81 @@
 using ::android::hardware::boot::V1_0::Slot;
 using namespace android::fs_mgr;
 
+struct VariableHandlers {
+    // Callback to retrieve the value of a single variable.
+    std::function<bool(FastbootDevice*, const std::vector<std::string>&, std::string*)> get;
+    // Callback to retrieve all possible argument combinations, for getvar all.
+    std::function<std::vector<std::vector<std::string>>(FastbootDevice*)> get_all_args;
+};
+
+static void GetAllVars(FastbootDevice* device, const std::string& name,
+                       const VariableHandlers& handlers) {
+    if (!handlers.get_all_args) {
+        std::string message;
+        if (!handlers.get(device, std::vector<std::string>(), &message)) {
+            return;
+        }
+        device->WriteInfo(android::base::StringPrintf("%s:%s", name.c_str(), message.c_str()));
+        return;
+    }
+
+    auto all_args = handlers.get_all_args(device);
+    for (const auto& args : all_args) {
+        std::string message;
+        if (!handlers.get(device, args, &message)) {
+            continue;
+        }
+        std::string arg_string = android::base::Join(args, ":");
+        device->WriteInfo(android::base::StringPrintf("%s:%s:%s", name.c_str(), arg_string.c_str(),
+                                                      message.c_str()));
+    }
+}
+
 bool GetVarHandler(FastbootDevice* device, const std::vector<std::string>& args) {
-    using VariableHandler = std::function<bool(FastbootDevice*, const std::vector<std::string>&)>;
-    const std::unordered_map<std::string, VariableHandler> kVariableMap = {
-            {FB_VAR_VERSION, GetVersion},
-            {FB_VAR_VERSION_BOOTLOADER, GetBootloaderVersion},
-            {FB_VAR_VERSION_BASEBAND, GetBasebandVersion},
-            {FB_VAR_PRODUCT, GetProduct},
-            {FB_VAR_SERIALNO, GetSerial},
-            {FB_VAR_SECURE, GetSecure},
-            {FB_VAR_UNLOCKED, GetUnlocked},
-            {FB_VAR_MAX_DOWNLOAD_SIZE, GetMaxDownloadSize},
-            {FB_VAR_CURRENT_SLOT, ::GetCurrentSlot},
-            {FB_VAR_SLOT_COUNT, GetSlotCount},
-            {FB_VAR_HAS_SLOT, GetHasSlot},
-            {FB_VAR_SLOT_SUCCESSFUL, GetSlotSuccessful},
-            {FB_VAR_SLOT_UNBOOTABLE, GetSlotUnbootable},
-            {FB_VAR_PARTITION_SIZE, GetPartitionSize},
-            {FB_VAR_IS_LOGICAL, GetPartitionIsLogical},
-            {FB_VAR_IS_USERSPACE, GetIsUserspace}};
+    const std::unordered_map<std::string, VariableHandlers> kVariableMap = {
+            {FB_VAR_VERSION, {GetVersion, nullptr}},
+            {FB_VAR_VERSION_BOOTLOADER, {GetBootloaderVersion, nullptr}},
+            {FB_VAR_VERSION_BASEBAND, {GetBasebandVersion, nullptr}},
+            {FB_VAR_PRODUCT, {GetProduct, nullptr}},
+            {FB_VAR_SERIALNO, {GetSerial, nullptr}},
+            {FB_VAR_SECURE, {GetSecure, nullptr}},
+            {FB_VAR_UNLOCKED, {GetUnlocked, nullptr}},
+            {FB_VAR_MAX_DOWNLOAD_SIZE, {GetMaxDownloadSize, nullptr}},
+            {FB_VAR_CURRENT_SLOT, {::GetCurrentSlot, nullptr}},
+            {FB_VAR_SLOT_COUNT, {GetSlotCount, nullptr}},
+            {FB_VAR_HAS_SLOT, {GetHasSlot, GetAllPartitionArgsNoSlot}},
+            {FB_VAR_SLOT_SUCCESSFUL, {GetSlotSuccessful, nullptr}},
+            {FB_VAR_SLOT_UNBOOTABLE, {GetSlotUnbootable, nullptr}},
+            {FB_VAR_PARTITION_SIZE, {GetPartitionSize, GetAllPartitionArgsWithSlot}},
+            {FB_VAR_PARTITION_TYPE, {GetPartitionType, GetAllPartitionArgsWithSlot}},
+            {FB_VAR_IS_LOGICAL, {GetPartitionIsLogical, GetAllPartitionArgsWithSlot}},
+            {FB_VAR_IS_USERSPACE, {GetIsUserspace, nullptr}},
+            {FB_VAR_HW_REVISION, {GetHardwareRevision, nullptr}}};
+
+    if (args.size() < 2) {
+        return device->WriteFail("Missing argument");
+    }
+
+    // Special case: return all variables that we can.
+    if (args[1] == "all") {
+        for (const auto& [name, handlers] : kVariableMap) {
+            GetAllVars(device, name, handlers);
+        }
+        return device->WriteOkay("");
+    }
 
     // args[0] is command name, args[1] is variable.
     auto found_variable = kVariableMap.find(args[1]);
     if (found_variable == kVariableMap.end()) {
-        return device->WriteStatus(FastbootResult::FAIL, "Unknown variable");
+        return device->WriteFail("Unknown variable");
     }
 
+    std::string message;
     std::vector<std::string> getvar_args(args.begin() + 2, args.end());
-    return found_variable->second(device, getvar_args);
+    if (!found_variable->second.get(device, getvar_args, &message)) {
+        return device->WriteFail(message);
+    }
+    return device->WriteOkay(message);
 }
 
 bool EraseHandler(FastbootDevice* device, const std::vector<std::string>& args) {
diff --git a/fastboot/device/fastboot_device.cpp b/fastboot/device/fastboot_device.cpp
index 6ed6d32..ae2e7a6 100644
--- a/fastboot/device/fastboot_device.cpp
+++ b/fastboot/device/fastboot_device.cpp
@@ -19,7 +19,7 @@
 #include <android-base/logging.h>
 #include <android-base/strings.h>
 #include <android/hardware/boot/1.0/IBootControl.h>
-
+#include <android/hardware/fastboot/1.0/IFastboot.h>
 #include <algorithm>
 
 #include "constants.h"
@@ -29,6 +29,7 @@
 using ::android::hardware::hidl_string;
 using ::android::hardware::boot::V1_0::IBootControl;
 using ::android::hardware::boot::V1_0::Slot;
+using ::android::hardware::fastboot::V1_0::IFastboot;
 namespace sph = std::placeholders;
 
 FastbootDevice::FastbootDevice()
@@ -49,7 +50,8 @@
               {FB_CMD_UPDATE_SUPER, UpdateSuperHandler},
       }),
       transport_(std::make_unique<ClientUsbTransport>()),
-      boot_control_hal_(IBootControl::getService()) {}
+      boot_control_hal_(IBootControl::getService()),
+      fastboot_hal_(IFastboot::getService()) {}
 
 FastbootDevice::~FastbootDevice() {
     CloseDevice();
@@ -137,3 +139,7 @@
 bool FastbootDevice::WriteFail(const std::string& message) {
     return WriteStatus(FastbootResult::FAIL, message);
 }
+
+bool FastbootDevice::WriteInfo(const std::string& message) {
+    return WriteStatus(FastbootResult::INFO, message);
+}
diff --git a/fastboot/device/fastboot_device.h b/fastboot/device/fastboot_device.h
index addc2ef..189cf80 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/fastboot/1.0/IFastboot.h>
 
 #include "commands.h"
 #include "transport.h"
@@ -39,20 +40,25 @@
     bool HandleData(bool read, std::vector<char>* data);
     std::string GetCurrentSlot();
 
-    // Shortcuts for writing OKAY and FAIL status results.
+    // Shortcuts for writing status results.
     bool WriteOkay(const std::string& message);
     bool WriteFail(const std::string& message);
+    bool WriteInfo(const std::string& message);
 
     std::vector<char>& download_data() { return download_data_; }
     Transport* get_transport() { return transport_.get(); }
     android::sp<android::hardware::boot::V1_0::IBootControl> boot_control_hal() {
         return boot_control_hal_;
     }
+    android::sp<android::hardware::fastboot::V1_0::IFastboot> fastboot_hal() {
+        return fastboot_hal_;
+    }
 
   private:
     const std::unordered_map<std::string, CommandHandler> kCommandMap;
 
     std::unique_ptr<Transport> transport_;
     android::sp<android::hardware::boot::V1_0::IBootControl> boot_control_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 e3efbcb..a383c54 100644
--- a/fastboot/device/flashing.cpp
+++ b/fastboot/device/flashing.cpp
@@ -72,7 +72,7 @@
 }
 
 int FlashSparseData(int fd, std::vector<char>& downloaded_data) {
-    struct sparse_file* file = sparse_file_import_buf(downloaded_data.data(), true, false);
+    struct sparse_file* file = sparse_file_import_buf(downloaded_data.data(), true, true);
     if (!file) {
         return -ENOENT;
     }
diff --git a/fastboot/device/utility.cpp b/fastboot/device/utility.cpp
index ec84576..261a202 100644
--- a/fastboot/device/utility.cpp
+++ b/fastboot/device/utility.cpp
@@ -16,6 +16,11 @@
 
 #include "utility.h"
 
+#include <dirent.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
 #include <android-base/logging.h>
 #include <fs_mgr_dm_linear.h>
 #include <liblp/liblp.h>
@@ -23,6 +28,7 @@
 #include "fastboot_device.h"
 
 using namespace android::fs_mgr;
+using namespace std::chrono_literals;
 using android::base::unique_fd;
 using android::hardware::boot::V1_0::Slot;
 
@@ -43,11 +49,11 @@
     }
     uint32_t slot_number = SlotNumberForSlotSuffix(slot);
     std::string dm_path;
-    if (!CreateLogicalPartition(path->c_str(), slot_number, name, true, &dm_path)) {
+    if (!CreateLogicalPartition(path->c_str(), slot_number, name, true, 5s, &dm_path)) {
         LOG(ERROR) << "Could not map partition: " << name;
         return false;
     }
-    auto closer = [name]() -> void { DestroyLogicalPartition(name); };
+    auto closer = [name]() -> void { DestroyLogicalPartition(name, 5s); };
     *handle = PartitionHandle(dm_path, std::move(closer));
     return true;
 }
@@ -75,7 +81,7 @@
 
 std::optional<std::string> FindPhysicalPartition(const std::string& name) {
     std::string path = "/dev/block/by-name/" + name;
-    if (access(path.c_str(), R_OK | W_OK) < 0) {
+    if (access(path.c_str(), W_OK) < 0) {
         return {};
     }
     return path;
@@ -123,3 +129,33 @@
     *number = slot[0] - 'a';
     return true;
 }
+
+std::vector<std::string> ListPartitions(FastbootDevice* device) {
+    std::vector<std::string> partitions;
+
+    // First get physical partitions.
+    struct dirent* de;
+    std::unique_ptr<DIR, decltype(&closedir)> by_name(opendir("/dev/block/by-name"), closedir);
+    while ((de = readdir(by_name.get())) != nullptr) {
+        if (!strcmp(de->d_name, ".") || !strcmp(de->d_name, "..")) {
+            continue;
+        }
+        struct stat s;
+        std::string path = "/dev/block/by-name/" + std::string(de->d_name);
+        if (!stat(path.c_str(), &s) && S_ISBLK(s.st_mode)) {
+            partitions.emplace_back(de->d_name);
+        }
+    }
+
+    // Next get logical partitions.
+    if (auto path = FindPhysicalPartition(LP_METADATA_PARTITION_NAME)) {
+        uint32_t slot_number = SlotNumberForSlotSuffix(device->GetCurrentSlot());
+        if (auto metadata = ReadMetadata(path->c_str(), slot_number)) {
+            for (const auto& partition : metadata->partitions) {
+                std::string partition_name = GetPartitionName(partition);
+                partitions.emplace_back(partition_name);
+            }
+        }
+    }
+    return partitions;
+}
diff --git a/fastboot/device/utility.h b/fastboot/device/utility.h
index 0931fc3..4f0d079 100644
--- a/fastboot/device/utility.h
+++ b/fastboot/device/utility.h
@@ -56,5 +56,5 @@
 bool LogicalPartitionExists(const std::string& name, const std::string& slot_suffix,
                             bool* is_zero_length = nullptr);
 bool OpenPartition(FastbootDevice* device, const std::string& name, PartitionHandle* handle);
-
 bool GetSlotNumber(const std::string& slot, android::hardware::boot::V1_0::Slot* number);
+std::vector<std::string> ListPartitions(FastbootDevice* device);
diff --git a/fastboot/device/variables.cpp b/fastboot/device/variables.cpp
index 65cfea3..7535248 100644
--- a/fastboot/device/variables.cpp
+++ b/fastboot/device/variables.cpp
@@ -31,145 +31,278 @@
 
 using ::android::hardware::boot::V1_0::BoolResult;
 using ::android::hardware::boot::V1_0::Slot;
+using ::android::hardware::fastboot::V1_0::FileSystemType;
+using ::android::hardware::fastboot::V1_0::Result;
+using ::android::hardware::fastboot::V1_0::Status;
 
 constexpr int kMaxDownloadSizeDefault = 0x20000000;
 constexpr char kFastbootProtocolVersion[] = "0.4";
 
-bool GetVersion(FastbootDevice* device, const std::vector<std::string>& /* args */) {
-    return device->WriteOkay(kFastbootProtocolVersion);
+bool GetVersion(FastbootDevice* /* device */, const std::vector<std::string>& /* args */,
+                std::string* message) {
+    *message = kFastbootProtocolVersion;
+    return true;
 }
 
-bool GetBootloaderVersion(FastbootDevice* device, const std::vector<std::string>& /* args */) {
-    return device->WriteOkay(android::base::GetProperty("ro.bootloader", ""));
+bool GetBootloaderVersion(FastbootDevice* /* device */, const std::vector<std::string>& /* args */,
+                          std::string* message) {
+    *message = android::base::GetProperty("ro.bootloader", "");
+    return true;
 }
 
-bool GetBasebandVersion(FastbootDevice* device, const std::vector<std::string>& /* args */) {
-    return device->WriteOkay(android::base::GetProperty("ro.build.expect.baseband", ""));
+bool GetBasebandVersion(FastbootDevice* /* device */, const std::vector<std::string>& /* args */,
+                        std::string* message) {
+    *message = android::base::GetProperty("ro.build.expect.baseband", "");
+    return true;
 }
 
-bool GetProduct(FastbootDevice* device, const std::vector<std::string>& /* args */) {
-    return device->WriteOkay(android::base::GetProperty("ro.product.device", ""));
+bool GetProduct(FastbootDevice* /* device */, const std::vector<std::string>& /* args */,
+                std::string* message) {
+    *message = android::base::GetProperty("ro.product.device", "");
+    return true;
 }
 
-bool GetSerial(FastbootDevice* device, const std::vector<std::string>& /* args */) {
-    return device->WriteOkay(android::base::GetProperty("ro.serialno", ""));
+bool GetSerial(FastbootDevice* /* device */, const std::vector<std::string>& /* args */,
+               std::string* message) {
+    *message = android::base::GetProperty("ro.serialno", "");
+    return true;
 }
 
-bool GetSecure(FastbootDevice* device, const std::vector<std::string>& /* args */) {
-    return device->WriteOkay(android::base::GetBoolProperty("ro.secure", "") ? "yes" : "no");
+bool GetSecure(FastbootDevice* /* device */, const std::vector<std::string>& /* args */,
+               std::string* message) {
+    *message = android::base::GetBoolProperty("ro.secure", "") ? "yes" : "no";
+    return true;
 }
 
-bool GetCurrentSlot(FastbootDevice* device, const std::vector<std::string>& /* args */) {
+bool GetCurrentSlot(FastbootDevice* device, const std::vector<std::string>& /* args */,
+                    std::string* message) {
     std::string suffix = device->GetCurrentSlot();
-    std::string slot = suffix.size() == 2 ? suffix.substr(1) : suffix;
-    return device->WriteOkay(slot);
+    *message = suffix.size() == 2 ? suffix.substr(1) : suffix;
+    return true;
 }
 
-bool GetSlotCount(FastbootDevice* device, const std::vector<std::string>& /* args */) {
+bool GetSlotCount(FastbootDevice* device, const std::vector<std::string>& /* args */,
+                  std::string* message) {
     auto boot_control_hal = device->boot_control_hal();
     if (!boot_control_hal) {
-        return "0";
+        *message = "0";
+    } else {
+        *message = std::to_string(boot_control_hal->getNumberSlots());
     }
-    return device->WriteOkay(std::to_string(boot_control_hal->getNumberSlots()));
+    return true;
 }
 
-bool GetSlotSuccessful(FastbootDevice* device, const std::vector<std::string>& args) {
+bool GetSlotSuccessful(FastbootDevice* device, const std::vector<std::string>& args,
+                       std::string* message) {
     if (args.empty()) {
-        return device->WriteFail("Missing argument");
+        *message = "Missing argument";
+        return false;
     }
     Slot slot;
     if (!GetSlotNumber(args[0], &slot)) {
-        return device->WriteFail("Invalid slot");
+        *message = "Invalid slot";
+        return false;
     }
     auto boot_control_hal = device->boot_control_hal();
     if (!boot_control_hal) {
-        return device->WriteFail("Device has no slots");
+        *message = "Device has no slots";
+        return false;
     }
     if (boot_control_hal->isSlotMarkedSuccessful(slot) != BoolResult::TRUE) {
-        return device->WriteOkay("no");
+        *message = "no";
+    } else {
+        *message = "yes";
     }
-    return device->WriteOkay("yes");
+    return true;
 }
 
-bool GetSlotUnbootable(FastbootDevice* device, const std::vector<std::string>& args) {
+bool GetSlotUnbootable(FastbootDevice* device, const std::vector<std::string>& args,
+                       std::string* message) {
     if (args.empty()) {
-        return device->WriteFail("Missing argument");
+        *message = "Missing argument";
+        return false;
     }
     Slot slot;
     if (!GetSlotNumber(args[0], &slot)) {
-        return device->WriteFail("Invalid slot");
+        *message = "Invalid slot";
+        return false;
     }
     auto boot_control_hal = device->boot_control_hal();
     if (!boot_control_hal) {
-        return device->WriteFail("Device has no slots");
+        *message = "Device has no slots";
+        return false;
     }
     if (boot_control_hal->isSlotBootable(slot) != BoolResult::TRUE) {
-        return device->WriteOkay("yes");
+        *message = "yes";
+    } else {
+        *message = "no";
     }
-    return device->WriteOkay("no");
+    return true;
 }
 
-bool GetMaxDownloadSize(FastbootDevice* device, const std::vector<std::string>& /* args */) {
-    return device->WriteOkay(std::to_string(kMaxDownloadSizeDefault));
+bool GetMaxDownloadSize(FastbootDevice* /* device */, const std::vector<std::string>& /* args */,
+                        std::string* message) {
+    *message = android::base::StringPrintf("0x%X", kMaxDownloadSizeDefault);
+    return true;
 }
 
-bool GetUnlocked(FastbootDevice* device, const std::vector<std::string>& /* args */) {
-    return device->WriteOkay("yes");
+bool GetUnlocked(FastbootDevice* /* device */, const std::vector<std::string>& /* args */,
+                 std::string* message) {
+    *message = "yes";
+    return true;
 }
 
-bool GetHasSlot(FastbootDevice* device, const std::vector<std::string>& args) {
+bool GetHasSlot(FastbootDevice* device, const std::vector<std::string>& args,
+                std::string* message) {
     if (args.empty()) {
-        return device->WriteFail("Missing argument");
+        *message = "Missing argument";
+        return false;
     }
     std::string slot_suffix = device->GetCurrentSlot();
     if (slot_suffix.empty()) {
-        return device->WriteOkay("no");
+        *message = "no";
+        return true;
     }
     std::string partition_name = args[0] + slot_suffix;
     if (FindPhysicalPartition(partition_name) ||
         LogicalPartitionExists(partition_name, slot_suffix)) {
-        return device->WriteOkay("yes");
+        *message = "yes";
+    } else {
+        *message = "no";
     }
-    return device->WriteOkay("no");
+    return true;
 }
 
-bool GetPartitionSize(FastbootDevice* device, const std::vector<std::string>& args) {
+bool GetPartitionSize(FastbootDevice* device, const std::vector<std::string>& args,
+                      std::string* message) {
     if (args.size() < 1) {
-        return device->WriteFail("Missing argument");
+        *message = "Missing argument";
+        return false;
     }
     // Zero-length partitions cannot be created through device-mapper, so we
     // special case them here.
     bool is_zero_length;
     if (LogicalPartitionExists(args[0], device->GetCurrentSlot(), &is_zero_length) &&
         is_zero_length) {
-        return device->WriteOkay("0");
+        *message = "0";
+        return true;
     }
     // Otherwise, open the partition as normal.
     PartitionHandle handle;
     if (!OpenPartition(device, args[0], &handle)) {
-        return device->WriteFail("Could not open partition");
+        *message = "Could not open partition";
+        return false;
     }
     uint64_t size = get_block_device_size(handle.fd());
-    return device->WriteOkay(android::base::StringPrintf("%" PRIX64, size));
+    *message = android::base::StringPrintf("0x%" PRIX64, size);
+    return true;
 }
 
-bool GetPartitionIsLogical(FastbootDevice* device, const std::vector<std::string>& args) {
+bool GetPartitionType(FastbootDevice* device, const std::vector<std::string>& args,
+                      std::string* message) {
     if (args.size() < 1) {
-        return device->WriteFail("Missing argument");
+        *message = "Missing argument";
+        return false;
+    }
+    std::string partition_name = args[0];
+    auto fastboot_hal = device->fastboot_hal();
+    if (!fastboot_hal) {
+        *message = "Fastboot HAL not found";
+        return false;
+    }
+
+    FileSystemType type;
+    Result ret;
+    auto ret_val =
+            fastboot_hal->getPartitionType(args[0], [&](FileSystemType fs_type, Result result) {
+                type = fs_type;
+                ret = result;
+            });
+    if (!ret_val.isOk() || (ret.status != Status::SUCCESS)) {
+        *message = "Unable to retrieve partition type";
+    } else {
+        switch (type) {
+            case FileSystemType::RAW:
+                *message = "raw";
+                return true;
+            case FileSystemType::EXT4:
+                *message = "ext4";
+                return true;
+            case FileSystemType::F2FS:
+                *message = "f2fs";
+                return true;
+            default:
+                *message = "Unknown file system type";
+        }
+    }
+
+    return false;
+}
+
+bool GetPartitionIsLogical(FastbootDevice* device, const std::vector<std::string>& args,
+                           std::string* message) {
+    if (args.size() < 1) {
+        *message = "Missing argument";
+        return false;
     }
     // Note: if a partition name is in both the GPT and the super partition, we
     // return "true", to be consistent with prefering to flash logical partitions
     // over physical ones.
     std::string partition_name = args[0];
     if (LogicalPartitionExists(partition_name, device->GetCurrentSlot())) {
-        return device->WriteOkay("yes");
+        *message = "yes";
+        return true;
     }
     if (FindPhysicalPartition(partition_name)) {
-        return device->WriteOkay("no");
+        *message = "no";
+        return true;
     }
-    return device->WriteFail("Partition not found");
+    *message = "Partition not found";
+    return false;
 }
 
-bool GetIsUserspace(FastbootDevice* device, const std::vector<std::string>& /* args */) {
-    return device->WriteOkay("yes");
+bool GetIsUserspace(FastbootDevice* /* device */, const std::vector<std::string>& /* args */,
+                    std::string* message) {
+    *message = "yes";
+    return true;
+}
+
+std::vector<std::vector<std::string>> GetAllPartitionArgsWithSlot(FastbootDevice* device) {
+    std::vector<std::vector<std::string>> args;
+    auto partitions = ListPartitions(device);
+    for (const auto& partition : partitions) {
+        args.emplace_back(std::initializer_list<std::string>{partition});
+    }
+    return args;
+}
+
+std::vector<std::vector<std::string>> GetAllPartitionArgsNoSlot(FastbootDevice* device) {
+    auto partitions = ListPartitions(device);
+
+    std::string slot_suffix = device->GetCurrentSlot();
+    if (!slot_suffix.empty()) {
+        auto names = std::move(partitions);
+        for (const auto& name : names) {
+            std::string slotless_name = name;
+            if (android::base::EndsWith(name, "_a") || android::base::EndsWith(name, "_b")) {
+                slotless_name = name.substr(0, name.rfind("_"));
+            }
+            if (std::find(partitions.begin(), partitions.end(), slotless_name) ==
+                partitions.end()) {
+                partitions.emplace_back(slotless_name);
+            }
+        }
+    }
+
+    std::vector<std::vector<std::string>> args;
+    for (const auto& partition : partitions) {
+        args.emplace_back(std::initializer_list<std::string>{partition});
+    }
+    return args;
+}
+
+bool GetHardwareRevision(FastbootDevice* /* device */, const std::vector<std::string>& /* args */,
+                         std::string* message) {
+    *message = android::base::GetProperty("ro.revision", "");
+    return true;
 }
diff --git a/fastboot/device/variables.h b/fastboot/device/variables.h
index 554a080..63f2670 100644
--- a/fastboot/device/variables.h
+++ b/fastboot/device/variables.h
@@ -21,19 +21,38 @@
 
 class FastbootDevice;
 
-bool GetVersion(FastbootDevice* device, const std::vector<std::string>& args);
-bool GetBootloaderVersion(FastbootDevice* device, const std::vector<std::string>& args);
-bool GetBasebandVersion(FastbootDevice* device, const std::vector<std::string>& args);
-bool GetProduct(FastbootDevice* device, const std::vector<std::string>& args);
-bool GetSerial(FastbootDevice* device, const std::vector<std::string>& args);
-bool GetSecure(FastbootDevice* device, const std::vector<std::string>& args);
-bool GetCurrentSlot(FastbootDevice* device, const std::vector<std::string>& args);
-bool GetSlotCount(FastbootDevice* device, const std::vector<std::string>& args);
-bool GetSlotSuccessful(FastbootDevice* device, const std::vector<std::string>& args);
-bool GetSlotUnbootable(FastbootDevice* device, const std::vector<std::string>& args);
-bool GetMaxDownloadSize(FastbootDevice* device, const std::vector<std::string>& args);
-bool GetUnlocked(FastbootDevice* device, const std::vector<std::string>& args);
-bool GetHasSlot(FastbootDevice* device, const std::vector<std::string>& args);
-bool GetPartitionSize(FastbootDevice* device, const std::vector<std::string>& args);
-bool GetPartitionIsLogical(FastbootDevice* device, const std::vector<std::string>& args);
-bool GetIsUserspace(FastbootDevice* device, const std::vector<std::string>& args);
+bool GetVersion(FastbootDevice* device, const std::vector<std::string>& args, std::string* message);
+bool GetBootloaderVersion(FastbootDevice* device, const std::vector<std::string>& args,
+                          std::string* message);
+bool GetBasebandVersion(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);
+bool GetCurrentSlot(FastbootDevice* device, const std::vector<std::string>& args,
+                    std::string* message);
+bool GetSlotCount(FastbootDevice* device, const std::vector<std::string>& args,
+                  std::string* message);
+bool GetSlotSuccessful(FastbootDevice* device, const std::vector<std::string>& args,
+                       std::string* message);
+bool GetSlotUnbootable(FastbootDevice* device, const std::vector<std::string>& args,
+                       std::string* message);
+bool GetMaxDownloadSize(FastbootDevice* device, const std::vector<std::string>& args,
+                        std::string* message);
+bool GetUnlocked(FastbootDevice* device, const std::vector<std::string>& args,
+                 std::string* message);
+bool GetHasSlot(FastbootDevice* device, const std::vector<std::string>& args, std::string* message);
+bool GetPartitionSize(FastbootDevice* device, const std::vector<std::string>& args,
+                      std::string* message);
+bool GetPartitionType(FastbootDevice* device, const std::vector<std::string>& args,
+                      std::string* message);
+bool GetPartitionIsLogical(FastbootDevice* device, const std::vector<std::string>& args,
+                           std::string* message);
+bool GetIsUserspace(FastbootDevice* device, const std::vector<std::string>& args,
+                    std::string* message);
+bool GetHardwareRevision(FastbootDevice* device, const std::vector<std::string>& args,
+                         std::string* message);
+
+// Helpers for getvar all.
+std::vector<std::vector<std::string>> GetAllPartitionArgsWithSlot(FastbootDevice* device);
+std::vector<std::vector<std::string>> GetAllPartitionArgsNoSlot(FastbootDevice* device);
diff --git a/fastboot/engine.cpp b/fastboot/engine.cpp
index 6890643..0ac57af 100644
--- a/fastboot/engine.cpp
+++ b/fastboot/engine.cpp
@@ -44,39 +44,8 @@
 #include "constants.h"
 #include "transport.h"
 
-enum Op {
-    OP_DOWNLOAD,
-    OP_COMMAND,
-    OP_QUERY,
-    OP_NOTICE,
-    OP_DOWNLOAD_SPARSE,
-    OP_WAIT_FOR_DISCONNECT,
-    OP_DOWNLOAD_FD,
-    OP_UPLOAD,
-};
+using android::base::StringPrintf;
 
-struct Action {
-    Action(Op op, const std::string& cmd) : op(op), cmd(cmd) {}
-
-    Op op;
-    std::string cmd;
-    std::string msg;
-
-    std::string product;
-
-    void* data = nullptr;
-    // The protocol only supports 32-bit sizes, so you'll have to break
-    // anything larger into multiple chunks.
-    uint32_t size = 0;
-
-    int fd = -1;
-
-    int (*func)(Action& a, int status, const char* resp) = nullptr;
-
-    double start = -1;
-};
-
-static std::vector<std::unique_ptr<Action>> action_list;
 static fastboot::FastBootDriver* fb = nullptr;
 
 void fb_init(fastboot::FastBootDriver& fbi) {
@@ -85,6 +54,12 @@
     fb->SetInfoCallback(cb);
 }
 
+void fb_reinit(Transport* transport) {
+    if (Transport* old_transport = fb->set_transport(transport)) {
+        delete old_transport;
+    }
+}
+
 const std::string fb_get_error() {
     return fb->Error();
 }
@@ -93,81 +68,72 @@
     return !fb->GetVar(key, value);
 }
 
-static int cb_default(Action& a, int status, const char* resp) {
+static void HandleResult(double start, int status) {
     if (status) {
-        fprintf(stderr,"FAILED (%s)\n", resp);
+        fprintf(stderr, "FAILED (%s)\n", fb->Error().c_str());
+        die("Command failed");
     } else {
         double split = now();
-        fprintf(stderr, "OKAY [%7.3fs]\n", (split - a.start));
-        a.start = split;
+        fprintf(stderr, "OKAY [%7.3fs]\n", (split - start));
     }
-    return status;
 }
 
-static Action& queue_action(Op op, const std::string& cmd) {
-    std::unique_ptr<Action> a{new Action(op, cmd)};
-    a->func = cb_default;
-
-    action_list.push_back(std::move(a));
-    return *action_list.back();
-}
+#define RUN_COMMAND(command)         \
+    {                                \
+        double start = now();        \
+        auto status = (command);     \
+        HandleResult(start, status); \
+    }
 
 void fb_set_active(const std::string& slot) {
-    Action& a = queue_action(OP_COMMAND, FB_CMD_SET_ACTIVE ":" + slot);
-    a.msg = "Setting current slot to '" + slot + "'";
+    Status("Setting current slot to '" + slot + "'");
+    RUN_COMMAND(fb->SetActive(slot));
 }
 
-void fb_queue_erase(const std::string& partition) {
-    Action& a = queue_action(OP_COMMAND, FB_CMD_ERASE ":" + partition);
-    a.msg = "Erasing '" + partition + "'";
+void fb_erase(const std::string& partition) {
+    Status("Erasing '" + partition + "'");
+    RUN_COMMAND(fb->Erase(partition));
 }
 
-void fb_queue_flash_fd(const std::string& partition, int fd, uint32_t sz) {
-    Action& a = queue_action(OP_DOWNLOAD_FD, "");
-    a.fd = fd;
-    a.size = sz;
-    a.msg = android::base::StringPrintf("Sending '%s' (%u KB)", partition.c_str(), sz / 1024);
+void fb_flash_fd(const std::string& partition, int fd, uint32_t sz) {
+    Status(StringPrintf("Sending '%s' (%u KB)", partition.c_str(), sz / 1024));
+    RUN_COMMAND(fb->Download(fd, sz));
 
-    Action& b = queue_action(OP_COMMAND, FB_CMD_FLASH ":" + partition);
-    b.msg = "Writing '" + partition + "'";
+    Status("Writing '" + partition + "'");
+    RUN_COMMAND(fb->Flash(partition));
 }
 
-void fb_queue_flash(const std::string& partition, void* data, uint32_t sz) {
-    Action& a = queue_action(OP_DOWNLOAD, "");
-    a.data = data;
-    a.size = sz;
-    a.msg = android::base::StringPrintf("Sending '%s' (%u KB)", partition.c_str(), sz / 1024);
+void fb_flash(const std::string& partition, void* data, uint32_t sz) {
+    Status(StringPrintf("Sending '%s' (%u KB)", partition.c_str(), sz / 1024));
+    RUN_COMMAND(fb->Download(static_cast<char*>(data), sz));
 
-    Action& b = queue_action(OP_COMMAND, FB_CMD_FLASH ":" + partition);
-    b.msg = "Writing '" + partition + "'";
+    Status("Writing '" + partition + "'");
+    RUN_COMMAND(fb->Flash(partition));
 }
 
-void fb_queue_flash_sparse(const std::string& partition, struct sparse_file* s, uint32_t sz,
-                           size_t current, size_t total) {
-    Action& a = queue_action(OP_DOWNLOAD_SPARSE, "");
-    a.data = s;
-    a.size = 0;
-    a.msg = android::base::StringPrintf("Sending sparse '%s' %zu/%zu (%u KB)", partition.c_str(),
-                                        current, total, sz / 1024);
+void fb_flash_sparse(const std::string& partition, struct sparse_file* s, uint32_t sz,
+                     size_t current, size_t total) {
+    Status(StringPrintf("Sending sparse '%s' %zu/%zu (%u KB)", partition.c_str(), current, total,
+                        sz / 1024));
+    RUN_COMMAND(fb->Download(s));
 
-    Action& b = queue_action(OP_COMMAND, FB_CMD_FLASH ":" + partition);
-    b.msg = android::base::StringPrintf("Writing sparse '%s' %zu/%zu", partition.c_str(), current,
-                                        total);
+    Status(StringPrintf("Writing sparse '%s' %zu/%zu", partition.c_str(), current, total));
+    RUN_COMMAND(fb->Flash(partition));
 }
 
-void fb_queue_create_partition(const std::string& partition, const std::string& size) {
-    Action& a = queue_action(OP_COMMAND, FB_CMD_CREATE_PARTITION ":" + partition + ":" + size);
-    a.msg = "Creating '" + partition + "'";
+void fb_create_partition(const std::string& partition, const std::string& size) {
+    Status("Creating '" + partition + "'");
+    RUN_COMMAND(fb->RawCommand(FB_CMD_CREATE_PARTITION ":" + partition + ":" + size));
 }
 
-void fb_queue_delete_partition(const std::string& partition) {
-    Action& a = queue_action(OP_COMMAND, FB_CMD_DELETE_PARTITION ":" + partition);
-    a.msg = "Deleting '" + partition + "'";
+void fb_delete_partition(const std::string& partition) {
+    Status("Deleting '" + partition + "'");
+    RUN_COMMAND(fb->RawCommand(FB_CMD_DELETE_PARTITION ":" + partition));
 }
 
-void fb_queue_resize_partition(const std::string& partition, const std::string& size) {
-    Action& a = queue_action(OP_COMMAND, FB_CMD_RESIZE_PARTITION ":" + partition + ":" + size);
-    a.msg = "Resizing '" + partition + "'";
+void fb_resize_partition(const std::string& partition, const std::string& size) {
+    Status("Resizing '" + partition + "'");
+    RUN_COMMAND(fb->RawCommand(FB_CMD_RESIZE_PARTITION ":" + partition + ":" + size));
 }
 
 static int match(const char* str, const char** value, unsigned count) {
@@ -191,184 +157,116 @@
     return 0;
 }
 
-static int cb_check(Action& a, int status, const char* resp, int invert) {
-    const char** value = reinterpret_cast<const char**>(a.data);
-    unsigned count = a.size;
-    unsigned n;
+void fb_require(const std::string& product, const std::string& var, bool invert, size_t count,
+                const char** values) {
+    Status("Checking '" + var + "'");
+
+    double start = now();
+
+    std::string var_value;
+    auto status = fb->GetVar(var, &var_value);
 
     if (status) {
-        fprintf(stderr,"FAILED (%s)\n", resp);
-        return status;
+        fprintf(stderr, "getvar:%s FAILED (%s)\n", var.c_str(), fb->Error().c_str());
+        die("requirements not met!");
     }
 
-    if (!a.product.empty()) {
-        if (a.product != cur_product) {
+    if (!product.empty()) {
+        if (product != cur_product) {
             double split = now();
             fprintf(stderr, "IGNORE, product is %s required only for %s [%7.3fs]\n", cur_product,
-                    a.product.c_str(), (split - a.start));
-            a.start = split;
-            return 0;
+                    product.c_str(), (split - start));
+            return;
         }
     }
 
-    int yes = match(resp, value, count);
+    int yes = match(var_value.c_str(), values, count);
     if (invert) yes = !yes;
 
     if (yes) {
         double split = now();
-        fprintf(stderr, "OKAY [%7.3fs]\n", (split - a.start));
-        a.start = split;
-        return 0;
+        fprintf(stderr, "OKAY [%7.3fs]\n", (split - start));
+        return;
     }
 
     fprintf(stderr, "FAILED\n\n");
-    fprintf(stderr, "Device %s is '%s'.\n", a.cmd.c_str() + 7, resp);
-    fprintf(stderr, "Update %s '%s'", invert ? "rejects" : "requires", value[0]);
-    for (n = 1; n < count; n++) {
-        fprintf(stderr, " or '%s'", value[n]);
+    fprintf(stderr, "Device %s is '%s'.\n", var.c_str(), var_value.c_str());
+    fprintf(stderr, "Update %s '%s'", invert ? "rejects" : "requires", values[0]);
+    for (size_t n = 1; n < count; n++) {
+        fprintf(stderr, " or '%s'", values[n]);
     }
     fprintf(stderr, ".\n\n");
-    return -1;
+    die("requirements not met!");
 }
 
-static int cb_require(Action& a, int status, const char* resp) {
-    return cb_check(a, status, resp, 0);
-}
+void fb_display(const std::string& label, const std::string& var) {
+    std::string value;
+    auto status = fb->GetVar(var, &value);
 
-static int cb_reject(Action& a, int status, const char* resp) {
-    return cb_check(a, status, resp, 1);
-}
-
-void fb_queue_require(const std::string& product, const std::string& var, bool invert,
-                      size_t nvalues, const char** values) {
-    Action& a = queue_action(OP_QUERY, FB_CMD_GETVAR ":" + var);
-    a.product = product;
-    a.data = values;
-    a.size = nvalues;
-    a.msg = "Checking " + var;
-    a.func = invert ? cb_reject : cb_require;
-    if (a.data == nullptr) die("out of memory");
-}
-
-static int cb_display(Action& a, int status, const char* resp) {
     if (status) {
-        fprintf(stderr, "%s FAILED (%s)\n", a.cmd.c_str(), resp);
-        return status;
+        fprintf(stderr, "getvar:%s FAILED (%s)\n", var.c_str(), fb->Error().c_str());
+        return;
     }
-    fprintf(stderr, "%s: %s\n", static_cast<const char*>(a.data), resp);
-    free(static_cast<char*>(a.data));
-    return 0;
+    fprintf(stderr, "%s: %s\n", label.c_str(), value.c_str());
 }
 
-void fb_queue_display(const std::string& label, const std::string& var) {
-    Action& a = queue_action(OP_QUERY, FB_CMD_GETVAR ":" + var);
-    a.data = xstrdup(label.c_str());
-    a.func = cb_display;
-}
+void fb_query_save(const std::string& var, char* dest, uint32_t dest_size) {
+    std::string value;
+    auto status = fb->GetVar(var, &value);
 
-static int cb_save(Action& a, int status, const char* resp) {
     if (status) {
-        fprintf(stderr, "%s FAILED (%s)\n", a.cmd.c_str(), resp);
-        return status;
+        fprintf(stderr, "getvar:%s FAILED (%s)\n", var.c_str(), fb->Error().c_str());
+        return;
     }
-    strncpy(reinterpret_cast<char*>(a.data), resp, a.size);
-    return 0;
+
+    strncpy(dest, value.c_str(), dest_size);
 }
 
-void fb_queue_query_save(const std::string& var, char* dest, uint32_t dest_size) {
-    Action& a = queue_action(OP_QUERY, FB_CMD_GETVAR ":" + var);
-    a.data = dest;
-    a.size = dest_size;
-    a.func = cb_save;
-}
-
-static int cb_do_nothing(Action&, int, const char*) {
+void fb_reboot() {
+    fprintf(stderr, "Rebooting");
+    fb->Reboot();
     fprintf(stderr, "\n");
-    return 0;
 }
 
-void fb_queue_reboot() {
-    Action& a = queue_action(OP_COMMAND, FB_CMD_REBOOT);
-    a.func = cb_do_nothing;
-    a.msg = "Rebooting";
+void fb_command(const std::string& cmd, const std::string& msg) {
+    Status(msg);
+    RUN_COMMAND(fb->RawCommand(cmd));
 }
 
-void fb_queue_command(const std::string& cmd, const std::string& msg) {
-    Action& a = queue_action(OP_COMMAND, cmd);
-    a.msg = msg;
+void fb_download(const std::string& name, void* data, uint32_t size) {
+    Status("Downloading '" + name + "'");
+    RUN_COMMAND(fb->Download(static_cast<char*>(data), size));
 }
 
-void fb_queue_download(const std::string& name, void* data, uint32_t size) {
-    Action& a = queue_action(OP_DOWNLOAD, "");
-    a.data = data;
-    a.size = size;
-    a.msg = "Downloading '" + name + "'";
+void fb_download_fd(const std::string& name, int fd, uint32_t sz) {
+    Status(StringPrintf("Sending '%s' (%u KB)", name.c_str(), sz / 1024));
+    RUN_COMMAND(fb->Download(fd, sz));
 }
 
-void fb_queue_download_fd(const std::string& name, int fd, uint32_t sz) {
-    Action& a = queue_action(OP_DOWNLOAD_FD, "");
-    a.fd = fd;
-    a.size = sz;
-    a.msg = android::base::StringPrintf("Sending '%s' (%u KB)", name.c_str(), sz / 1024);
+void fb_upload(const std::string& outfile) {
+    Status("Uploading '" + outfile + "'");
+    RUN_COMMAND(fb->Upload(outfile));
 }
 
-void fb_queue_upload(const std::string& outfile) {
-    Action& a = queue_action(OP_UPLOAD, "");
-    a.data = xstrdup(outfile.c_str());
-    a.msg = "Uploading '" + outfile + "'";
+void fb_notice(const std::string& notice) {
+    Status(notice);
+    fprintf(stderr, "\n");
 }
 
-void fb_queue_notice(const std::string& notice) {
-    Action& a = queue_action(OP_NOTICE, "");
-    a.msg = notice;
+void fb_wait_for_disconnect() {
+    fb->WaitForDisconnect();
 }
 
-void fb_queue_wait_for_disconnect() {
-    queue_action(OP_WAIT_FOR_DISCONNECT, "");
-}
+bool fb_reboot_to_userspace() {
+    Status("Rebooting to userspace fastboot");
+    verbose("\n");
 
-int64_t fb_execute_queue() {
-    int64_t status = 0;
-    for (auto& a : action_list) {
-        a->start = now();
-        if (!a->msg.empty()) {
-            fprintf(stderr, "%-50s ", a->msg.c_str());
-            verbose("\n");
-        }
-        if (a->op == OP_DOWNLOAD) {
-            char* cbuf = static_cast<char*>(a->data);
-            status = fb->Download(cbuf, a->size);
-            status = a->func(*a, status, status ? fb_get_error().c_str() : "");
-            if (status) break;
-        } else if (a->op == OP_DOWNLOAD_FD) {
-            status = fb->Download(a->fd, a->size);
-            status = a->func(*a, status, status ? fb_get_error().c_str() : "");
-            if (status) break;
-        } else if (a->op == OP_COMMAND) {
-            status = fb->RawCommand(a->cmd);
-            status = a->func(*a, status, status ? fb_get_error().c_str() : "");
-            if (status) break;
-        } else if (a->op == OP_QUERY) {
-            std::string resp;
-            status = fb->RawCommand(a->cmd, &resp);
-            status = a->func(*a, status, status ? fb_get_error().c_str() : resp.c_str());
-            if (status) break;
-        } else if (a->op == OP_NOTICE) {
-            // We already showed the notice because it's in `Action::msg`.
-            fprintf(stderr, "\n");
-        } else if (a->op == OP_DOWNLOAD_SPARSE) {
-            status = fb->Download(reinterpret_cast<sparse_file*>(a->data));
-            status = a->func(*a, status, status ? fb_get_error().c_str() : "");
-            if (status) break;
-        } else if (a->op == OP_WAIT_FOR_DISCONNECT) {
-            fb->WaitForDisconnect();
-        } else if (a->op == OP_UPLOAD) {
-            status = fb->Upload(reinterpret_cast<const char*>(a->data));
-            status = a->func(*a, status, status ? fb_get_error().c_str() : "");
-        } else {
-            die("unknown action: %d", a->op);
-        }
+    if (fb->RebootTo("fastboot") != fastboot::RetCode::SUCCESS) {
+        fprintf(stderr, "FAILED (%s)\n", fb->Error().c_str());
+        return false;
     }
-    action_list.clear();
-    return status;
+    fprintf(stderr, "OKAY\n");
+
+    fb_reinit(nullptr);
+    return true;
 }
diff --git a/fastboot/engine.h b/fastboot/engine.h
index 8aebdd7..d78cb13 100644
--- a/fastboot/engine.h
+++ b/fastboot/engine.h
@@ -44,36 +44,31 @@
 
 const std::string fb_get_error();
 
-//#define FB_COMMAND_SZ (fastboot::FB_COMMAND_SZ)
-//#define FB_RESPONSE_SZ (fastboot::FB_RESPONSE_SZ)
-
-/* engine.c - high level command queue engine */
-
 void fb_init(fastboot::FastBootDriver& fbi);
+void fb_reinit(Transport* transport);
 
 bool fb_getvar(const std::string& key, std::string* value);
-void fb_queue_flash(const std::string& partition, void* data, uint32_t sz);
-void fb_queue_flash_fd(const std::string& partition, int fd, uint32_t sz);
-void fb_queue_flash_sparse(const std::string& partition, struct sparse_file* s, uint32_t sz,
-                           size_t current, size_t total);
-void fb_queue_erase(const std::string& partition);
-void fb_queue_format(const std::string& partition, int skip_if_not_supported, int32_t max_chunk_sz);
-void fb_queue_require(const std::string& prod, const std::string& var, bool invert, size_t nvalues,
-                      const char** values);
-void fb_queue_display(const std::string& label, const std::string& var);
-void fb_queue_query_save(const std::string& var, char* dest, uint32_t dest_size);
-void fb_queue_reboot(void);
-void fb_queue_command(const std::string& cmd, const std::string& msg);
-void fb_queue_download(const std::string& name, void* data, uint32_t size);
-void fb_queue_download_fd(const std::string& name, int fd, uint32_t sz);
-void fb_queue_upload(const std::string& outfile);
-void fb_queue_notice(const std::string& notice);
-void fb_queue_wait_for_disconnect(void);
-void fb_queue_create_partition(const std::string& partition, const std::string& size);
-void fb_queue_delete_partition(const std::string& partition);
-void fb_queue_resize_partition(const std::string& partition, const std::string& size);
-int64_t fb_execute_queue();
+void fb_flash(const std::string& partition, void* data, uint32_t sz);
+void fb_flash_fd(const std::string& partition, int fd, uint32_t sz);
+void fb_flash_sparse(const std::string& partition, struct sparse_file* s, uint32_t sz,
+                     size_t current, size_t total);
+void fb_erase(const std::string& partition);
+void fb_require(const std::string& prod, const std::string& var, bool invert, size_t nvalues,
+                const char** values);
+void fb_display(const std::string& label, const std::string& var);
+void fb_query_save(const std::string& var, char* dest, uint32_t dest_size);
+void fb_reboot();
+void fb_command(const std::string& cmd, const std::string& msg);
+void fb_download(const std::string& name, void* data, uint32_t size);
+void fb_download_fd(const std::string& name, int fd, uint32_t sz);
+void fb_upload(const std::string& outfile);
+void fb_notice(const std::string& notice);
+void fb_wait_for_disconnect(void);
+void fb_create_partition(const std::string& partition, const std::string& size);
+void fb_delete_partition(const std::string& partition);
+void fb_resize_partition(const std::string& partition, const std::string& size);
 void fb_set_active(const std::string& slot);
+bool fb_reboot_to_userspace();
 
 /* Current product */
 extern char cur_product[FB_RESPONSE_SZ + 1];
diff --git a/fastboot/fastboot.cpp b/fastboot/fastboot.cpp
index 4a8ee33..817afd0 100644
--- a/fastboot/fastboot.cpp
+++ b/fastboot/fastboot.cpp
@@ -55,6 +55,8 @@
 #include <android-base/strings.h>
 #include <android-base/test_utils.h>
 #include <android-base/unique_fd.h>
+#include <build/version.h>
+#include <platform_tools_version.h>
 #include <sparse/sparse.h>
 #include <ziparchive/zip_archive.h>
 
@@ -107,46 +109,56 @@
     int64_t image_size;
 };
 
+enum class ImageType {
+    // Must be flashed for device to boot into the kernel.
+    BootCritical,
+    // Normal partition to be flashed during "flashall".
+    Normal,
+    // Partition that is never flashed during "flashall".
+    Extra
+};
+
 struct Image {
     const char* nickname;
     const char* img_name;
     const char* sig_name;
     const char* part_name;
     bool optional_if_no_image;
-    bool optional_if_no_partition;
-    bool flashall;
+    ImageType type;
     bool IsSecondary() const { return nickname == nullptr; }
 };
 
 static Image images[] = {
         // clang-format off
-    { "boot",     "boot.img",         "boot.sig",     "boot",     false, false, true, },
-    { nullptr,    "boot_other.img",   "boot.sig",     "boot",     true,  false, true, },
-    { "dtbo",     "dtbo.img",         "dtbo.sig",     "dtbo",     true,  false, true, },
-    { "dts",      "dt.img",           "dt.sig",       "dts",      true,  false, true, },
-    { "odm",      "odm.img",          "odm.sig",      "odm",      true,  false, true, },
-    { "product",  "product.img",      "product.sig",  "product",  true,  false, true, },
+    { "boot",     "boot.img",         "boot.sig",     "boot",     false, ImageType::BootCritical },
+    { nullptr,    "boot_other.img",   "boot.sig",     "boot",     true,  ImageType::Normal },
+    { "cache",    "cache.img",        "cache.sig",    "cache",    true,  ImageType::Extra },
+    { "dtbo",     "dtbo.img",         "dtbo.sig",     "dtbo",     true,  ImageType::BootCritical },
+    { "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,  true,  true, },
-    { "recovery", "recovery.img",     "recovery.sig", "recovery", true,  false, true, },
-    { "system",   "system.img",       "system.sig",   "system",   false, true,  true, },
-    { nullptr,    "system_other.img", "system.sig",   "system",   true,  false, true, },
-    { "vbmeta",   "vbmeta.img",       "vbmeta.sig",   "vbmeta",   true,  false, true, },
-    { "vendor",   "vendor.img",       "vendor.sig",   "vendor",   true,  true,  true, },
-    { nullptr,    "vendor_other.img", "vendor.sig",   "vendor",   true,  false, true, },
-    { "super",    "super.img",        "super.sig",    "super",    true,  true, false, },
+                                                                  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 },
+    { 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 },
+    { "vendor",   "vendor.img",       "vendor.sig",   "vendor",   true,  ImageType::Normal },
+    { nullptr,    "vendor_other.img", "vendor.sig",   "vendor",   true,  ImageType::Normal },
         // clang-format on
 };
 
-static std::string find_item_given_name(const char* img_name) {
+static std::string find_item_given_name(const std::string& img_name) {
     char* dir = getenv("ANDROID_PRODUCT_OUT");
     if (dir == nullptr || dir[0] == '\0') {
         die("ANDROID_PRODUCT_OUT not set");
     }
-    return android::base::StringPrintf("%s/%s", dir, img_name);
+    return std::string(dir) + "/" + img_name;
 }
 
 static std::string find_item(const std::string& item) {
@@ -156,9 +168,6 @@
         }
     }
 
-    if (item == "userdata") return find_item_given_name("userdata.img");
-    if (item == "cache") return find_item_given_name("cache.img");
-
     fprintf(stderr, "unknown partition '%s'\n", item.c_str());
     return "";
 }
@@ -246,13 +255,8 @@
 // The returned Transport is a singleton, so multiple calls to this function will return the same
 // object, and the caller should not attempt to delete the returned Transport.
 static Transport* open_device() {
-    static Transport* transport = nullptr;
     bool announce = true;
 
-    if (transport != nullptr) {
-        return transport;
-    }
-
     Socket::Protocol protocol = Socket::Protocol::kTcp;
     std::string host;
     int port = 0;
@@ -277,6 +281,7 @@
         }
     }
 
+    Transport* transport = nullptr;
     while (true) {
         if (!host.empty()) {
             std::string error;
@@ -571,6 +576,7 @@
     ZipEntry zip_entry;
     if (FindEntry(zip, zip_entry_name, &zip_entry) != 0) {
         fprintf(stderr, "archive does not contain '%s'\n", entry_name);
+        errno = ENOENT;
         return -1;
     }
 
@@ -642,8 +648,7 @@
     // "require partition-exists=x" is a special case, added because of the trouble we had when
     // Pixel 2 shipped with new partitions and users used old versions of fastboot to flash them,
     // missing out new partitions. A device with new partitions can use "partition-exists" to
-    // override the fields `optional_if_no_image` and 'optional_if_no_partition' in the `images`
-    // array.
+    // override the fields `optional_if_no_image` in the `images` array.
     if (!strcmp(name, "partition-exists")) {
         const char* partition_name = val[0];
         std::string has_slot;
@@ -655,7 +660,6 @@
         for (size_t i = 0; i < arraysize(images); ++i) {
             if (images[i].nickname && !strcmp(images[i].nickname, partition_name)) {
                 images[i].optional_if_no_image = false;
-                images[i].optional_if_no_partition = false;
                 known_partition = true;
             }
         }
@@ -684,7 +688,7 @@
         out[i] = xstrdup(strip(val[i]));
     }
 
-    fb_queue_require(product, var, invert, count, out);
+    fb_require(product, var, invert, count, out);
 }
 
 static void check_requirements(char* data, int64_t sz) {
@@ -698,15 +702,14 @@
             s++;
         }
     }
-    if (fb_execute_queue()) die("requirements not met!");
 }
 
-static void queue_info_dump() {
-    fb_queue_notice("--------------------------------------------");
-    fb_queue_display("Bootloader Version...", "version-bootloader");
-    fb_queue_display("Baseband Version.....", "version-baseband");
-    fb_queue_display("Serial Number........", "serialno");
-    fb_queue_notice("--------------------------------------------");
+static void dump_info() {
+    fb_notice("--------------------------------------------");
+    fb_display("Bootloader Version...", "version-bootloader");
+    fb_display("Baseband Version.....", "version-baseband");
+    fb_display("Serial Number........", "serialno");
+    fb_notice("--------------------------------------------");
 }
 
 static struct sparse_file** load_sparse_files(int fd, int64_t max_size) {
@@ -879,12 +882,12 @@
 
             for (size_t i = 0; i < sparse_files.size(); ++i) {
                 const auto& pair = sparse_files[i];
-                fb_queue_flash_sparse(partition, pair.first, pair.second, i + 1, sparse_files.size());
+                fb_flash_sparse(partition, pair.first, pair.second, i + 1, sparse_files.size());
             }
             break;
         }
         case FB_BUFFER_FD:
-            fb_queue_flash_fd(partition, buf->fd, buf->sz);
+            fb_flash_fd(partition, buf->fd, buf->sz);
             break;
         default:
             die("unknown buffer type: %d", buf->type);
@@ -1032,14 +1035,6 @@
     flash_buf(pname, &buf);
 }
 
-static void do_update_signature(ZipArchiveHandle zip, const char* filename) {
-    int64_t sz;
-    void* data = unzip_to_memory(zip, filename, &sz);
-    if (data == nullptr) return;
-    fb_queue_download("signature", data, sz);
-    fb_queue_command("signature", "installing signature");
-}
-
 // Sets slot_override as the active slot. If slot_override is blank,
 // set current slot as active instead. This clears slot-unbootable.
 static void set_active(const std::string& slot_override) {
@@ -1079,10 +1074,209 @@
     return fb_getvar("partition-size:" + partition_name, &partition_size);
 }
 
-static void do_update(const char* filename, const std::string& slot_override, bool skip_secondary) {
-    queue_info_dump();
+static bool is_logical(const std::string& partition) {
+    std::string value;
+    return fb_getvar("is-logical:" + partition, &value) && value == "yes";
+}
 
-    fb_queue_query_save("product", cur_product, sizeof(cur_product));
+static void reboot_to_userspace_fastboot() {
+    if (!fb_reboot_to_userspace()) {
+        die("Must reboot to userspace fastboot to flash logical partitions");
+    }
+
+    // Give the current connection time to close.
+    std::this_thread::sleep_for(std::chrono::milliseconds(1000));
+
+    fb_reinit(open_device());
+}
+
+class ImageSource {
+  public:
+    virtual void* ReadFile(const std::string& name, int64_t* size) const = 0;
+    virtual int OpenFile(const std::string& name) const = 0;
+};
+
+class FlashAllTool {
+  public:
+    FlashAllTool(const ImageSource& source, const std::string& slot_override, bool skip_secondary, bool wipe);
+
+    void Flash();
+
+  private:
+    void CheckRequirements();
+    void DetermineSecondarySlot();
+    void CollectImages();
+    void FlashImages(const std::vector<std::pair<const Image*, std::string>>& images);
+    void FlashImage(const Image& image, const std::string& slot, fastboot_buffer* buf);
+    void UpdateSuperPartition();
+
+    const ImageSource& source_;
+    std::string slot_override_;
+    bool skip_secondary_;
+    bool wipe_;
+    std::string secondary_slot_;
+    std::vector<std::pair<const Image*, std::string>> boot_images_;
+    std::vector<std::pair<const Image*, std::string>> os_images_;
+};
+
+FlashAllTool::FlashAllTool(const ImageSource& source, const std::string& slot_override, bool skip_secondary, bool wipe)
+   : source_(source),
+     slot_override_(slot_override),
+     skip_secondary_(skip_secondary),
+     wipe_(wipe)
+{
+}
+
+void FlashAllTool::Flash() {
+    CheckRequirements();
+    DetermineSecondarySlot();
+    CollectImages();
+
+    // First flash boot partitions. We allow this to happen either in userspace
+    // or in bootloader fastboot.
+    FlashImages(boot_images_);
+
+    // Sync the super partition. This will reboot to userspace fastboot if needed.
+    UpdateSuperPartition();
+
+    // Resize any logical partition to 0, so each partition is reset to 0
+    // extents, and will achieve more optimal allocation.
+    for (const auto& [image, slot] : os_images_) {
+        auto resize_partition = [](const std::string& partition) -> void {
+            if (is_logical(partition)) {
+                fb_resize_partition(partition, "0");
+            }
+        };
+        do_for_partitions(image->part_name, slot, resize_partition, false);
+    }
+
+    // Flash OS images, resizing logical partitions as needed.
+    FlashImages(os_images_);
+
+    if (slot_override_ == "all") {
+        set_active("a");
+    } else {
+        set_active(slot_override_);
+    }
+}
+
+void FlashAllTool::CheckRequirements() {
+    int64_t sz;
+    void* data = source_.ReadFile("android-info.txt", &sz);
+    if (data == nullptr) {
+        die("could not read android-info.txt");
+    }
+    check_requirements(reinterpret_cast<char*>(data), sz);
+}
+
+void FlashAllTool::DetermineSecondarySlot() {
+    if (skip_secondary_) {
+        return;
+    }
+    if (slot_override_ != "") {
+        secondary_slot_ = get_other_slot(slot_override_);
+    } else {
+        secondary_slot_ = get_other_slot();
+    }
+    if (secondary_slot_ == "") {
+        if (supports_AB()) {
+            fprintf(stderr, "Warning: Could not determine slot for secondary images. Ignoring.\n");
+        }
+        skip_secondary_ = true;
+    }
+}
+
+void FlashAllTool::CollectImages() {
+    for (size_t i = 0; i < arraysize(images); ++i) {
+        std::string slot = slot_override_;
+        if (images[i].IsSecondary()) {
+            if (skip_secondary_) {
+                continue;
+            }
+            slot = secondary_slot_;
+        }
+        if (images[i].type == ImageType::BootCritical) {
+            boot_images_.emplace_back(&images[i], slot);
+        } else if (images[i].type == ImageType::Normal) {
+            os_images_.emplace_back(&images[i], slot);
+        }
+    }
+}
+
+void FlashAllTool::FlashImages(const std::vector<std::pair<const Image*, std::string>>& images) {
+    for (const auto& [image, slot] : images) {
+        fastboot_buffer buf;
+        int fd = source_.OpenFile(image->img_name);
+        if (fd < 0 || !load_buf_fd(fd, &buf)) {
+            if (image->optional_if_no_image) {
+                continue;
+            }
+            die("could not load '%s': %s", image->img_name, strerror(errno));
+        }
+        FlashImage(*image, slot, &buf);
+    }
+}
+
+void FlashAllTool::FlashImage(const Image& image, const std::string& slot, fastboot_buffer* buf) {
+    auto flash = [&, this](const std::string& partition_name) {
+        int64_t sz;
+        void* data = source_.ReadFile(image.sig_name, &sz);
+        if (data) {
+            fb_download("signature", data, sz);
+            fb_command("signature", "installing signature");
+        }
+
+        if (is_logical(partition_name)) {
+            fb_resize_partition(partition_name, std::to_string(buf->image_size));
+        }
+        flash_buf(partition_name.c_str(), buf);
+    };
+    do_for_partitions(image.part_name, slot, flash, false);
+}
+
+void FlashAllTool::UpdateSuperPartition() {
+    if (!if_partition_exists("super", "")) {
+        return;
+    }
+
+    int fd = source_.OpenFile("super_empty.img");
+    if (fd < 0) {
+        return;
+    }
+    if (!is_userspace_fastboot()) {
+        reboot_to_userspace_fastboot();
+    }
+    fb_download_fd("super", fd, get_file_size(fd));
+
+    std::string command = "update-super:super";
+    if (wipe_) {
+        command += ":wipe";
+    }
+    fb_command(command, "Updating super partition");
+}
+
+class ZipImageSource final : public ImageSource {
+  public:
+    explicit ZipImageSource(ZipArchiveHandle zip) : zip_(zip) {}
+    void* ReadFile(const std::string& name, int64_t* size) const override;
+    int OpenFile(const std::string& name) const override;
+
+  private:
+    ZipArchiveHandle zip_;
+};
+
+void* ZipImageSource::ReadFile(const std::string& name, int64_t* size) const {
+    return unzip_to_memory(zip_, name.c_str(), size);
+}
+
+int ZipImageSource::OpenFile(const std::string& name) const {
+    return unzip_to_file(zip_, name.c_str());
+}
+
+static void do_update(const char* filename, const std::string& slot_override, bool skip_secondary) {
+    dump_info();
+
+    fb_query_save("product", cur_product, sizeof(cur_product));
 
     ZipArchiveHandle zip;
     int error = OpenArchive(filename, &zip);
@@ -1090,207 +1284,39 @@
         die("failed to open zip file '%s': %s", filename, ErrorCodeString(error));
     }
 
-    int64_t sz;
-    void* data = unzip_to_memory(zip, "android-info.txt", &sz);
-    if (data == nullptr) {
-        die("update package '%s' has no android-info.txt", filename);
-    }
-
-    check_requirements(reinterpret_cast<char*>(data), sz);
-
-    std::string secondary;
-    if (!skip_secondary) {
-        if (slot_override != "") {
-            secondary = get_other_slot(slot_override);
-        } else {
-            secondary = get_other_slot();
-        }
-        if (secondary == "") {
-            if (supports_AB()) {
-                fprintf(stderr, "Warning: Could not determine slot for secondary images. Ignoring.\n");
-            }
-            skip_secondary = true;
-        }
-    }
-    for (size_t i = 0; i < arraysize(images); ++i) {
-        const char* slot = slot_override.c_str();
-        if (images[i].IsSecondary()) {
-            if (!skip_secondary) {
-                slot = secondary.c_str();
-            } else {
-                continue;
-            }
-        }
-
-        int fd = unzip_to_file(zip, images[i].img_name);
-        if (fd == -1) {
-            if (images[i].optional_if_no_image) {
-                continue; // An optional file is missing, so ignore it.
-            }
-            die("non-optional file %s missing", images[i].img_name);
-        }
-
-        if (images[i].optional_if_no_partition &&
-            !if_partition_exists(images[i].part_name, slot)) {
-            continue;
-        }
-
-        fastboot_buffer buf;
-        if (!load_buf_fd(fd, &buf)) {
-            die("cannot load %s from flash: %s", images[i].img_name, strerror(errno));
-        }
-
-        auto update = [&](const std::string& partition) {
-            do_update_signature(zip, images[i].sig_name);
-            flash_buf(partition.c_str(), &buf);
-            /* not closing the fd here since the sparse code keeps the fd around
-             * but hasn't mmaped data yet. The temporary file will get cleaned up when the
-             * program exits.
-             */
-        };
-        do_for_partitions(images[i].part_name, slot, update, false);
-    }
-
-    if (slot_override == "all") {
-        set_active("a");
-    } else {
-        set_active(slot_override);
-    }
+    FlashAllTool tool(ZipImageSource(zip), slot_override, skip_secondary, false);
+    tool.Flash();
 
     CloseArchive(zip);
 }
 
-static void do_send_signature(const std::string& fn) {
-    std::size_t extension_loc = fn.find(".img");
-    if (extension_loc == std::string::npos) return;
+class LocalImageSource final : public ImageSource {
+  public:
+    void* ReadFile(const std::string& name, int64_t* size) const override;
+    int OpenFile(const std::string& name) const override;
+};
 
-    std::string fs_sig = fn.substr(0, extension_loc) + ".sig";
-
-    int64_t sz;
-    void* data = load_file(fs_sig.c_str(), &sz);
-    if (data == nullptr) return;
-
-    fb_queue_download("signature", data, sz);
-    fb_queue_command("signature", "installing signature");
+void* LocalImageSource::ReadFile(const std::string& name, int64_t* size) const {
+    auto path = find_item_given_name(name);
+    if (path.empty()) {
+        return nullptr;
+    }
+    return load_file(path.c_str(), size);
 }
 
-static bool is_logical(const std::string& partition) {
-    std::string value;
-    return fb_getvar("is-logical:" + partition, &value) && value == "yes";
-}
-
-static void update_super_partition(bool force_wipe) {
-    if (!if_partition_exists("super", "")) {
-        return;
-    }
-    std::string image = find_item_given_name("super_empty.img");
-    if (access(image.c_str(), R_OK) < 0) {
-        return;
-    }
-
-    if (!is_userspace_fastboot()) {
-        die("Must have userspace fastboot to flash logical partitions");
-    }
-
-    int fd = open(image.c_str(), O_RDONLY);
-    if (fd < 0) {
-        die("could not open '%s': %s", image.c_str(), strerror(errno));
-    }
-    fb_queue_download_fd("super", fd, get_file_size(fd));
-
-    std::string command = "update-super:super";
-    if (force_wipe) {
-        command += ":wipe";
-    }
-    fb_queue_command(command, "Updating super partition");
-
-    // We need these commands to have finished before proceeding, since
-    // otherwise "getvar is-logical" may not return a correct answer below.
-    fb_execute_queue();
+int LocalImageSource::OpenFile(const std::string& name) const {
+    auto path = find_item_given_name(name);
+    return open(path.c_str(), O_RDONLY);
 }
 
 static void do_flashall(const std::string& slot_override, bool skip_secondary, bool wipe) {
     std::string fname;
-    queue_info_dump();
+    dump_info();
 
-    fb_queue_query_save("product", cur_product, sizeof(cur_product));
+    fb_query_save("product", cur_product, sizeof(cur_product));
 
-    fname = find_item_given_name("android-info.txt");
-    if (fname.empty()) die("cannot find android-info.txt");
-
-    int64_t sz;
-    void* data = load_file(fname.c_str(), &sz);
-    if (data == nullptr) die("could not load android-info.txt: %s", strerror(errno));
-
-    check_requirements(reinterpret_cast<char*>(data), sz);
-
-    std::string secondary;
-    if (!skip_secondary) {
-        if (slot_override != "") {
-            secondary = get_other_slot(slot_override);
-        } else {
-            secondary = get_other_slot();
-        }
-        if (secondary == "") {
-            if (supports_AB()) {
-                fprintf(stderr, "Warning: Could not determine slot for secondary images. Ignoring.\n");
-            }
-            skip_secondary = true;
-        }
-    }
-
-    update_super_partition(wipe);
-
-    // List of partitions to flash and their slots.
-    std::vector<std::pair<const Image*, std::string>> entries;
-    for (size_t i = 0; i < arraysize(images); i++) {
-        if (!images[i].flashall) continue;
-        const char* slot = NULL;
-        if (images[i].IsSecondary()) {
-            if (!skip_secondary) slot = secondary.c_str();
-        } else {
-            slot = slot_override.c_str();
-        }
-        if (!slot) continue;
-        entries.emplace_back(&images[i], slot);
-
-        // Resize any logical partition to 0, so each partition is reset to 0
-        // extents, and will achieve more optimal allocation.
-        auto resize_partition = [](const std::string& partition) -> void {
-            if (is_logical(partition)) {
-                fb_queue_resize_partition(partition, "0");
-            }
-        };
-        do_for_partitions(images[i].part_name, slot, resize_partition, false);
-    }
-
-    // Flash each partition in the list if it has a corresponding image.
-    for (const auto& [image, slot] : entries) {
-        fname = find_item_given_name(image->img_name);
-        fastboot_buffer buf;
-        if (!load_buf(fname.c_str(), &buf)) {
-            if (image->optional_if_no_image) continue;
-            die("could not load '%s': %s", image->img_name, strerror(errno));
-        }
-        if (image->optional_if_no_partition &&
-            !if_partition_exists(image->part_name, slot)) {
-            continue;
-        }
-        auto flashall = [&](const std::string &partition) {
-            do_send_signature(fname.c_str());
-            if (is_logical(partition)) {
-                fb_queue_resize_partition(partition, std::to_string(buf.image_size));
-            }
-            flash_buf(partition.c_str(), &buf);
-        };
-        do_for_partitions(image->part_name, slot, flashall, false);
-    }
-
-    if (slot_override == "all") {
-        set_active("a");
-    } else {
-        set_active(slot_override);
-    }
+    FlashAllTool tool(LocalImageSource(), slot_override, skip_secondary, wipe);
+    tool.Flash();
 }
 
 static std::string next_arg(std::vector<std::string>* args) {
@@ -1307,7 +1333,7 @@
     while (!args->empty()) {
         command += " " + next_arg(args);
     }
-    fb_queue_command(command, "");
+    fb_command(command, "");
 }
 
 static std::string fb_fix_numeric_var(std::string var) {
@@ -1519,7 +1545,7 @@
                 setvbuf(stdout, nullptr, _IONBF, 0);
                 setvbuf(stderr, nullptr, _IONBF, 0);
             } else if (name == "version") {
-                fprintf(stdout, "fastboot version %s\n", FASTBOOT_VERSION);
+                fprintf(stdout, "fastboot version %s-%s\n", PLATFORM_TOOLS_VERSION, android::build::GetBuildNumber().c_str());
                 fprintf(stdout, "Installed as %s\n", android::base::GetExecutablePath().c_str());
                 return 0;
 #if !defined(_WIN32)
@@ -1610,7 +1636,7 @@
 
         if (command == "getvar") {
             std::string variable = next_arg(&args);
-            fb_queue_display(variable, variable);
+            fb_display(variable, variable);
         } else if (command == "erase") {
             std::string partition = next_arg(&args);
             auto erase = [&](const std::string& partition) {
@@ -1622,7 +1648,7 @@
                             partition_type.c_str());
                 }
 
-                fb_queue_erase(partition);
+                fb_erase(partition);
             };
             do_for_partitions(partition, slot_override, erase, true);
         } else if (android::base::StartsWith(command, "format")) {
@@ -1650,8 +1676,8 @@
             data = load_file(filename.c_str(), &sz);
             if (data == nullptr) die("could not load '%s': %s", filename.c_str(), strerror(errno));
             if (sz != 256) die("signature must be 256 bytes (got %" PRId64 ")", sz);
-            fb_queue_download("signature", data, sz);
-            fb_queue_command("signature", "installing signature");
+            fb_download("signature", data, sz);
+            fb_command("signature", "installing signature");
         } else if (command == "reboot") {
             wants_reboot = true;
 
@@ -1679,7 +1705,7 @@
         } else if (command == "reboot-fastboot") {
             wants_reboot_fastboot = true;
         } else if (command == "continue") {
-            fb_queue_command("continue", "resuming boot");
+            fb_command("continue", "resuming boot");
         } else if (command == "boot") {
             std::string kernel = next_arg(&args);
             std::string ramdisk;
@@ -1688,8 +1714,8 @@
             if (!args.empty()) second_stage = next_arg(&args);
 
             data = load_bootable_image(kernel, ramdisk, second_stage, &sz);
-            fb_queue_download("boot.img", data, sz);
-            fb_queue_command("boot", "booting");
+            fb_download("boot.img", data, sz);
+            fb_command("boot", "booting");
         } else if (command == "flash") {
             std::string pname = next_arg(&args);
 
@@ -1715,7 +1741,7 @@
 
             data = load_bootable_image(kernel, ramdisk, second_stage, &sz);
             auto flashraw = [&](const std::string& partition) {
-                fb_queue_flash(partition, data, sz);
+                fb_flash(partition, data, sz);
             };
             do_for_partitions(partition, slot_override, flashraw, true);
         } else if (command == "flashall") {
@@ -1747,10 +1773,10 @@
             if (!load_buf(filename.c_str(), &buf) || buf.type != FB_BUFFER_FD) {
                 die("cannot load '%s'", filename.c_str());
             }
-            fb_queue_download_fd(filename, buf.fd, buf.sz);
+            fb_download_fd(filename, buf.fd, buf.sz);
         } else if (command == "get_staged") {
             std::string filename = next_arg(&args);
-            fb_queue_upload(filename);
+            fb_upload(filename);
         } else if (command == "oem") {
             do_oem_command("oem", &args);
         } else if (command == "flashing") {
@@ -1767,14 +1793,14 @@
         } else if (command == "create-logical-partition") {
             std::string partition = next_arg(&args);
             std::string size = next_arg(&args);
-            fb_queue_create_partition(partition, size);
+            fb_create_partition(partition, size);
         } else if (command == "delete-logical-partition") {
             std::string partition = next_arg(&args);
-            fb_queue_delete_partition(partition);
+            fb_delete_partition(partition);
         } else if (command == "resize-logical-partition") {
             std::string partition = next_arg(&args);
             std::string size = next_arg(&args);
-            fb_queue_resize_partition(partition, size);
+            fb_resize_partition(partition, size);
         } else {
             syntax_error("unknown command %s", command.c_str());
         }
@@ -1786,7 +1812,7 @@
             std::string partition_type;
             if (!fb_getvar(std::string{"partition-type:"} + partition, &partition_type)) continue;
             if (partition_type.empty()) continue;
-            fb_queue_erase(partition);
+            fb_erase(partition);
             if (partition == "userdata" && set_fbe_marker) {
                 fprintf(stderr, "setting FBE marker on initial userdata...\n");
                 std::string initial_userdata_dir = create_fbemarker_tmpdir();
@@ -1801,22 +1827,25 @@
         fb_set_active(next_active);
     }
     if (wants_reboot && !skip_reboot) {
-        fb_queue_reboot();
-        fb_queue_wait_for_disconnect();
+        fb_reboot();
+        fb_wait_for_disconnect();
     } else if (wants_reboot_bootloader) {
-        fb_queue_command("reboot-bootloader", "rebooting into bootloader");
-        fb_queue_wait_for_disconnect();
+        fb_command("reboot-bootloader", "rebooting into bootloader");
+        fb_wait_for_disconnect();
     } else if (wants_reboot_recovery) {
-        fb_queue_command("reboot-recovery", "rebooting into recovery");
-        fb_queue_wait_for_disconnect();
+        fb_command("reboot-recovery", "rebooting into recovery");
+        fb_wait_for_disconnect();
     } else if (wants_reboot_fastboot) {
-        fb_queue_command("reboot-fastboot", "rebooting into fastboot");
-        fb_queue_wait_for_disconnect();
+        fb_command("reboot-fastboot", "rebooting into fastboot");
+        fb_wait_for_disconnect();
     }
 
-    int status = fb_execute_queue() ? EXIT_FAILURE : EXIT_SUCCESS;
     fprintf(stderr, "Finished. Total time: %.3fs\n", (now() - start));
-    return status;
+
+    if (Transport* old_transport = fb.set_transport(nullptr)) {
+        delete old_transport;
+    }
+    return 0;
 }
 
 void FastBootTool::ParseOsPatchLevel(boot_img_hdr_v1* hdr, const char* arg) {
diff --git a/fastboot/fastboot_driver.cpp b/fastboot/fastboot_driver.cpp
index c508abe..4a14131 100644
--- a/fastboot/fastboot_driver.cpp
+++ b/fastboot/fastboot_driver.cpp
@@ -52,11 +52,14 @@
 /*************************** PUBLIC *******************************/
 FastBootDriver::FastBootDriver(Transport* transport, std::function<void(std::string&)> info,
                                bool no_checks)
-    : transport(transport) {
+    : transport_(transport) {
     info_cb_ = info;
     disable_checks_ = no_checks;
 }
 
+FastBootDriver::~FastBootDriver() {
+}
+
 RetCode FastBootDriver::Boot(std::string* response, std::vector<std::string>* info) {
     return RawCommand(Commands::BOOT, response, info);
 }
@@ -85,22 +88,18 @@
     return GetVar("all", &tmp, response);
 }
 
-RetCode FastBootDriver::Powerdown(std::string* response, std::vector<std::string>* info) {
-    return RawCommand(Commands::POWERDOWN, response, info);
-}
-
 RetCode FastBootDriver::Reboot(std::string* response, std::vector<std::string>* info) {
     return RawCommand(Commands::REBOOT, response, info);
 }
 
-RetCode FastBootDriver::SetActive(const std::string& part, std::string* response,
-                                  std::vector<std::string>* info) {
-    return RawCommand(Commands::SET_ACTIVE + part, response, info);
+RetCode FastBootDriver::RebootTo(std::string target, std::string* response,
+                                 std::vector<std::string>* info) {
+    return RawCommand("reboot-" + target, response, info);
 }
 
-RetCode FastBootDriver::Verify(uint32_t num, std::string* response, std::vector<std::string>* info) {
-    std::string cmd = android::base::StringPrintf("%s%08" PRIx32, Commands::VERIFY.c_str(), num);
-    return RawCommand(cmd, response, info);
+RetCode FastBootDriver::SetActive(const std::string& slot, std::string* response,
+                                  std::vector<std::string>* info) {
+    return RawCommand(Commands::SET_ACTIVE + slot, response, info);
 }
 
 RetCode FastBootDriver::FlashPartition(const std::string& part, const std::vector<char>& data) {
@@ -127,7 +126,7 @@
     return RawCommand(Commands::FLASH + part);
 }
 
-RetCode FastBootDriver::Partitions(std::vector<std::tuple<std::string, uint32_t>>* parts) {
+RetCode FastBootDriver::Partitions(std::vector<std::tuple<std::string, uint64_t>>* parts) {
     std::vector<std::string> all;
     RetCode ret;
     if ((ret = GetVarAll(&all))) {
@@ -141,7 +140,7 @@
         if (std::regex_match(s, sm, reg)) {
             std::string m1(sm[1]);
             std::string m2(sm[2]);
-            uint32_t tmp = strtol(m2.c_str(), 0, 16);
+            uint64_t tmp = strtoll(m2.c_str(), 0, 16);
             parts->push_back(std::make_tuple(m1, tmp));
         }
     }
@@ -332,7 +331,7 @@
 }
 
 RetCode FastBootDriver::WaitForDisconnect() {
-    return transport->WaitForDisconnect() ? IO_ERROR : SUCCESS;
+    return transport_->WaitForDisconnect() ? IO_ERROR : SUCCESS;
 }
 
 /****************************** PROTECTED *************************************/
@@ -344,7 +343,7 @@
         return BAD_ARG;
     }
 
-    if (transport->Write(cmd.c_str(), cmd.size()) != static_cast<int>(cmd.size())) {
+    if (transport_->Write(cmd.c_str(), cmd.size()) != static_cast<int>(cmd.size())) {
         error_ = ErrnoStr("Write to device failed");
         return IO_ERROR;
     }
@@ -378,7 +377,7 @@
     // erase response
     set_response("");
     while ((std::chrono::system_clock::now() - start) < std::chrono::seconds(RESP_TIMEOUT)) {
-        int r = transport->Read(status, FB_RESPONSE_SZ);
+        int r = transport_->Read(status, FB_RESPONSE_SZ);
         if (r < 0) {
             error_ = ErrnoStr("Status read failed");
             return IO_ERROR;
@@ -427,11 +426,9 @@
 const std::string FastBootDriver::Commands::ERASE = "erase:";
 const std::string FastBootDriver::Commands::FLASH = "flash:";
 const std::string FastBootDriver::Commands::GET_VAR = "getvar:";
-const std::string FastBootDriver::Commands::POWERDOWN = "powerdown";
 const std::string FastBootDriver::Commands::REBOOT = "reboot";
 const std::string FastBootDriver::Commands::SET_ACTIVE = "set_active:";
 const std::string FastBootDriver::Commands::UPLOAD = "upload";
-const std::string FastBootDriver::Commands::VERIFY = "verify:";
 
 /******************************* PRIVATE **************************************/
 RetCode FastBootDriver::SendBuffer(int fd, size_t size) {
@@ -472,7 +469,7 @@
         return BAD_ARG;
     }
     // Write the buffer
-    ssize_t tmp = transport->Write(buf, size);
+    ssize_t tmp = transport_->Write(buf, size);
 
     if (tmp < 0) {
         error_ = ErrnoStr("Write to device failed in SendBuffer()");
@@ -493,7 +490,7 @@
 
 RetCode FastBootDriver::ReadBuffer(void* buf, size_t size) {
     // Read the buffer
-    ssize_t tmp = transport->Read(buf, size);
+    ssize_t tmp = transport_->Read(buf, size);
 
     if (tmp < 0) {
         error_ = ErrnoStr("Read from device failed in ReadBuffer()");
@@ -539,4 +536,9 @@
     return 0;
 }
 
+Transport* FastBootDriver::set_transport(Transport* transport) {
+    std::swap(transport_, transport);
+    return transport;
+}
+
 }  // End namespace fastboot
diff --git a/fastboot/fastboot_driver.h b/fastboot/fastboot_driver.h
index 51be3db..4d85ba0 100644
--- a/fastboot/fastboot_driver.h
+++ b/fastboot/fastboot_driver.h
@@ -66,6 +66,7 @@
     FastBootDriver(Transport* transport,
                    std::function<void(std::string&)> info = [](std::string&) {},
                    bool no_checks = false);
+    ~FastBootDriver();
 
     RetCode Boot(std::string* response = nullptr, std::vector<std::string>* info = nullptr);
     RetCode Continue(std::string* response = nullptr, std::vector<std::string>* info = nullptr);
@@ -85,21 +86,20 @@
     RetCode GetVar(const std::string& key, std::string* val,
                    std::vector<std::string>* info = nullptr);
     RetCode GetVarAll(std::vector<std::string>* response);
-    RetCode Powerdown(std::string* response = nullptr, std::vector<std::string>* info = nullptr);
     RetCode Reboot(std::string* response = nullptr, std::vector<std::string>* info = nullptr);
-    RetCode SetActive(const std::string& part, std::string* response = nullptr,
+    RetCode RebootTo(std::string target, std::string* response = nullptr,
+                     std::vector<std::string>* info = nullptr);
+    RetCode SetActive(const std::string& slot, std::string* response = nullptr,
                       std::vector<std::string>* info = nullptr);
     RetCode Upload(const std::string& outfile, std::string* response = nullptr,
                    std::vector<std::string>* info = nullptr);
-    RetCode Verify(uint32_t num, std::string* response = nullptr,
-                   std::vector<std::string>* info = nullptr);
 
     /* HIGHER LEVEL COMMANDS -- Composed of the commands above */
     RetCode FlashPartition(const std::string& part, const std::vector<char>& data);
     RetCode FlashPartition(const std::string& part, int fd, uint32_t sz);
     RetCode FlashPartition(const std::string& part, sparse_file* s);
 
-    RetCode Partitions(std::vector<std::tuple<std::string, uint32_t>>* parts);
+    RetCode Partitions(std::vector<std::tuple<std::string, uint64_t>>* parts);
     RetCode Require(const std::string& var, const std::vector<std::string>& allowed, bool* reqmet,
                     bool invert = false);
 
@@ -109,6 +109,10 @@
     std::string Error();
     RetCode WaitForDisconnect();
 
+    // Note: set_transport will return the previous transport.
+    Transport* set_transport(Transport* transport);
+    Transport* transport() const { return transport_; }
+
     // This is temporarily public for engine.cpp
     RetCode RawCommand(const std::string& cmd, std::string* response = nullptr,
                        std::vector<std::string>* info = nullptr, int* dsize = nullptr);
@@ -129,14 +133,12 @@
         static const std::string ERASE;
         static const std::string FLASH;
         static const std::string GET_VAR;
-        static const std::string POWERDOWN;
         static const std::string REBOOT;
         static const std::string SET_ACTIVE;
         static const std::string UPLOAD;
-        static const std::string VERIFY;
     };
 
-    Transport* const transport;
+    Transport* transport_;
 
   private:
     RetCode SendBuffer(int fd, size_t size);
diff --git a/fastboot/fuzzy_fastboot/fixtures.cpp b/fastboot/fuzzy_fastboot/fixtures.cpp
index 0a87598..4da71ca 100644
--- a/fastboot/fuzzy_fastboot/fixtures.cpp
+++ b/fastboot/fuzzy_fastboot/fixtures.cpp
@@ -133,7 +133,6 @@
     fb.reset();
 
     if (transport) {
-        transport->Close();
         transport.reset();
     }
 
@@ -188,7 +187,6 @@
         ASSERT_EQ(fb->RawCommand("flashing " + cmd, &resp), SUCCESS)
                 << "Attempting to change locked state, but 'flashing" + cmd + "' command failed";
         fb.reset();
-        transport->Close();
         transport.reset();
         printf("PLEASE RESPOND TO PROMPT FOR '%sing' BOOTLOADER ON DEVICE\n", cmd.c_str());
         while (UsbStillAvailible())
@@ -249,7 +247,6 @@
     }
 
     if (transport) {
-        transport->Close();
         transport.reset();
     }
 
diff --git a/fastboot/fuzzy_fastboot/main.cpp b/fastboot/fuzzy_fastboot/main.cpp
index 14bf5bf..8fb5a6a 100644
--- a/fastboot/fuzzy_fastboot/main.cpp
+++ b/fastboot/fuzzy_fastboot/main.cpp
@@ -86,9 +86,8 @@
 
 const std::string DEFAULT_OUPUT_NAME = "out.img";
 // const char scratch_partition[] = "userdata";
-const std::vector<std::string> CMDS{"boot",        "continue", "download:", "erase:",
-                                    "flash:",      "getvar:",  "powerdown", "reboot",
-                                    "set_active:", "upload",   "verify"};
+const std::vector<std::string> CMDS{"boot",    "continue", "download:",   "erase:", "flash:",
+                                    "getvar:", "reboot",   "set_active:", "upload"};
 
 // For pretty printing we need all these overloads
 ::std::ostream& operator<<(::std::ostream& os, const RetCode& ret) {
@@ -305,13 +304,13 @@
 }
 
 TEST_F(Conformance, PartitionInfo) {
-    std::vector<std::tuple<std::string, uint32_t>> parts;
+    std::vector<std::tuple<std::string, uint64_t>> parts;
     EXPECT_EQ(fb->Partitions(&parts), SUCCESS) << "getvar:all failed";
     EXPECT_GT(parts.size(), 0)
             << "getvar:all did not report any partition-size: through INFO responses";
     std::set<std::string> allowed{"ext4", "f2fs", "raw"};
     for (const auto p : parts) {
-        EXPECT_GT(std::get<1>(p), 0);
+        EXPECT_GE(std::get<1>(p), 0);
         std::string part(std::get<0>(p));
         std::set<std::string> allowed{"ext4", "f2fs", "raw"};
         std::string resp;
@@ -341,7 +340,7 @@
     // Can't run out of alphabet letters...
     ASSERT_LE(num_slots, 26) << "What?! You can't have more than 26 slots";
 
-    std::vector<std::tuple<std::string, uint32_t>> parts;
+    std::vector<std::tuple<std::string, uint64_t>> parts;
     EXPECT_EQ(fb->Partitions(&parts), SUCCESS) << "getvar:all failed";
 
     std::map<std::string, std::set<char>> part_slots;
@@ -571,7 +570,6 @@
     buf.back() = buf.back() ^ 0x01;
     ASSERT_EQ(DownloadCommand(buf.size()), SUCCESS) << "Device rejected download command";
     ASSERT_EQ(SendBuffer(buf), SUCCESS) << "Downloading payload failed";
-    printf("%02x\n", (unsigned char)buf.back());
     // It can either reject this download or reject it during flash
     if (HandleResponse() != DEVICE_FAIL) {
         EXPECT_EQ(fb->Flash("userdata"), DEVICE_FAIL)
@@ -588,14 +586,14 @@
     std::vector<char> buf{'a', 'o', 's', 'p'};
     EXPECT_EQ(fb->Download(buf), SUCCESS) << "Download failed in unlocked mode";
     ;
-    std::vector<std::tuple<std::string, uint32_t>> parts;
+    std::vector<std::tuple<std::string, uint64_t>> parts;
     EXPECT_EQ(fb->Partitions(&parts), SUCCESS) << "getvar:all failed in unlocked mode";
 }
 
 TEST_F(LockPermissions, DownloadFlash) {
     std::vector<char> buf{'a', 'o', 's', 'p'};
     EXPECT_EQ(fb->Download(buf), SUCCESS) << "Download failed in locked mode";
-    std::vector<std::tuple<std::string, uint32_t>> parts;
+    std::vector<std::tuple<std::string, uint64_t>> parts;
     EXPECT_EQ(fb->Partitions(&parts), SUCCESS) << "getvar:all failed in locked mode";
     std::string resp;
     for (const auto tup : parts) {
@@ -608,7 +606,7 @@
 }
 
 TEST_F(LockPermissions, Erase) {
-    std::vector<std::tuple<std::string, uint32_t>> parts;
+    std::vector<std::tuple<std::string, uint64_t>> parts;
     EXPECT_EQ(fb->Partitions(&parts), SUCCESS) << "getvar:all failed";
     std::string resp;
     for (const auto tup : parts) {
@@ -620,7 +618,7 @@
 }
 
 TEST_F(LockPermissions, SetActive) {
-    std::vector<std::tuple<std::string, uint32_t>> parts;
+    std::vector<std::tuple<std::string, uint64_t>> parts;
     EXPECT_EQ(fb->Partitions(&parts), SUCCESS) << "getvar:all failed";
 
     std::string resp;
@@ -917,7 +915,7 @@
 
 TEST_P(AnyPartition, ReportedGetVarAll) {
     // As long as the partition is reported in INFO, it would be tested by generic Conformance
-    std::vector<std::tuple<std::string, uint32_t>> parts;
+    std::vector<std::tuple<std::string, uint64_t>> parts;
     ASSERT_EQ(fb->Partitions(&parts), SUCCESS) << "getvar:all failed";
     const std::string name = GetParam().first;
     if (GetParam().second.slots) {
diff --git a/fastboot/fuzzy_fastboot/usb_transport_sniffer.cpp b/fastboot/fuzzy_fastboot/usb_transport_sniffer.cpp
index ee510e9..7c595f4 100644
--- a/fastboot/fuzzy_fastboot/usb_transport_sniffer.cpp
+++ b/fastboot/fuzzy_fastboot/usb_transport_sniffer.cpp
@@ -12,6 +12,10 @@
                                          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();
 
diff --git a/fastboot/fuzzy_fastboot/usb_transport_sniffer.h b/fastboot/fuzzy_fastboot/usb_transport_sniffer.h
index 693f042..8119aea 100644
--- a/fastboot/fuzzy_fastboot/usb_transport_sniffer.h
+++ b/fastboot/fuzzy_fastboot/usb_transport_sniffer.h
@@ -68,10 +68,11 @@
     };
 
     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;
+    virtual int Close() override final;  // note usage in destructor
     virtual int Reset() override;
 
     const std::vector<Event> Transfers();
diff --git a/fastboot/usb_linux.cpp b/fastboot/usb_linux.cpp
index 9b779dd..6363aa5 100644
--- a/fastboot/usb_linux.cpp
+++ b/fastboot/usb_linux.cpp
@@ -95,7 +95,7 @@
   public:
     explicit LinuxUsbTransport(std::unique_ptr<usb_handle> handle, uint32_t ms_timeout = 0)
         : handle_(std::move(handle)), ms_timeout_(ms_timeout) {}
-    ~LinuxUsbTransport() override = default;
+    ~LinuxUsbTransport() override;
 
     ssize_t Read(void* data, size_t len) override;
     ssize_t Write(const void* data, size_t len) override;
@@ -387,6 +387,10 @@
     return usb;
 }
 
+LinuxUsbTransport::~LinuxUsbTransport() {
+    Close();
+}
+
 ssize_t LinuxUsbTransport::Write(const void* _data, size_t len)
 {
     unsigned char *data = (unsigned char*) _data;
diff --git a/fastboot/usb_osx.cpp b/fastboot/usb_osx.cpp
index 4d48f6e..ed02c4a 100644
--- a/fastboot/usb_osx.cpp
+++ b/fastboot/usb_osx.cpp
@@ -70,7 +70,7 @@
     // A timeout of 0 is blocking
     OsxUsbTransport(std::unique_ptr<usb_handle> handle, uint32_t ms_timeout = 0)
         : handle_(std::move(handle)), ms_timeout_(ms_timeout) {}
-    ~OsxUsbTransport() override = default;
+    ~OsxUsbTransport() override;
 
     ssize_t Read(void* data, size_t len) override;
     ssize_t Write(const void* data, size_t len) override;
@@ -471,6 +471,10 @@
     return new OsxUsbTransport(std::move(handle), timeout_ms);
 }
 
+OsxUsbTransport::~OsxUsbTransport() {
+    Close();
+}
+
 int OsxUsbTransport::Close() {
     /* TODO: Something better here? */
     return 0;
diff --git a/fastboot/usb_windows.cpp b/fastboot/usb_windows.cpp
index 8c60a71..b00edb3 100644
--- a/fastboot/usb_windows.cpp
+++ b/fastboot/usb_windows.cpp
@@ -69,7 +69,7 @@
 class WindowsUsbTransport : public UsbTransport {
   public:
     WindowsUsbTransport(std::unique_ptr<usb_handle> handle) : handle_(std::move(handle)) {}
-    ~WindowsUsbTransport() override = default;
+    ~WindowsUsbTransport() override;
 
     ssize_t Read(void* data, size_t len) override;
     ssize_t Write(const void* data, size_t len) override;
@@ -250,6 +250,10 @@
     }
 }
 
+WindowsUsbTransport::~WindowsUsbTransport() {
+    Close();
+}
+
 int WindowsUsbTransport::Close() {
     DBG("usb_close\n");
 
diff --git a/fastboot/util.cpp b/fastboot/util.cpp
index 8f6e52a..125182d 100644
--- a/fastboot/util.cpp
+++ b/fastboot/util.cpp
@@ -70,6 +70,11 @@
     fprintf(stderr, "\n");
 }
 
+void Status(const std::string& message) {
+    static constexpr char kStatusFormat[] = "%-50s ";
+    fprintf(stderr, kStatusFormat, message.c_str());
+}
+
 char* xstrdup(const char* s) {
     char* result = strdup(s);
     if (!result) die("out of memory");
diff --git a/fastboot/util.h b/fastboot/util.h
index 9033f93..20be461 100644
--- a/fastboot/util.h
+++ b/fastboot/util.h
@@ -12,6 +12,8 @@
 char* xstrdup(const char*);
 void set_verbose();
 
+void Status(const std::string& message);
+
 // These printf-like functions are implemented in terms of vsnprintf, so they
 // use the same attribute for compile-time format string checking.
 void die(const char* fmt, ...) __attribute__((__noreturn__))
diff --git a/fs_mgr/fs_mgr.cpp b/fs_mgr/fs_mgr.cpp
index 99f2df8..f56043c 100644
--- a/fs_mgr/fs_mgr.cpp
+++ b/fs_mgr/fs_mgr.cpp
@@ -79,7 +79,8 @@
 
 #define ARRAY_SIZE(a) (sizeof(a) / sizeof(*(a)))
 
-using DeviceMapper = android::dm::DeviceMapper;
+using android::dm::DeviceMapper;
+using android::dm::DmDeviceState;
 
 // record fs stat
 enum FsStatFlags {
@@ -101,12 +102,16 @@
 
 // TODO: switch to inotify()
 bool fs_mgr_wait_for_file(const std::string& filename,
-                          const std::chrono::milliseconds relative_timeout) {
+                          const std::chrono::milliseconds relative_timeout,
+                          FileWaitMode file_wait_mode) {
     auto start_time = std::chrono::steady_clock::now();
 
     while (true) {
-        if (!access(filename.c_str(), F_OK) || errno != ENOENT) {
-            return 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);
@@ -790,7 +795,8 @@
         argv.emplace_back(arg.c_str());
     }
     LOG(INFO) << "Calling: " << android::base::Join(argv, ' ');
-    int ret = android_fork_execvp(4, const_cast<char**>(argv.data()), nullptr, false, true);
+    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;
@@ -852,7 +858,8 @@
         }
 
         /* Skip mounting the root partition, as it will already have been mounted */
-        if (!strcmp(fstab->recs[i].mount_point, "/")) {
+        if (!strcmp(fstab->recs[i].mount_point, "/") ||
+            !strcmp(fstab->recs[i].mount_point, "/system")) {
             if ((fstab->recs[i].fs_mgr_flags & MS_RDONLY) != 0) {
                 fs_mgr_set_blk_ro(fstab->recs[i].blk_device);
             }
@@ -1400,8 +1407,12 @@
             mount_point = basename(fstab->recs[i].mount_point);
         }
 
-        const char* status = nullptr;
+        if (dm.GetState(mount_point) == DmDeviceState::INVALID) {
+            PERROR << "Could not find verity device for mount point: " << mount_point;
+            continue;
+        }
 
+        const char* status = nullptr;
         std::vector<DeviceMapper::TargetInfo> table;
         if (!dm.GetTableStatus(mount_point, &table) || table.empty() || table[0].data.empty()) {
             if (fstab->recs[i].fs_mgr_flags & MF_VERIFYATBOOT) {
diff --git a/fs_mgr/fs_mgr_dm_linear.cpp b/fs_mgr/fs_mgr_dm_linear.cpp
index a91e92e..804069a 100644
--- a/fs_mgr/fs_mgr_dm_linear.cpp
+++ b/fs_mgr/fs_mgr_dm_linear.cpp
@@ -81,7 +81,7 @@
 
 static bool CreateLogicalPartition(const std::string& block_device, const LpMetadata& metadata,
                                    const LpMetadataPartition& partition, bool force_writable,
-                                   std::string* path) {
+                                   const std::chrono::milliseconds& timeout_ms, std::string* path) {
     DeviceMapper& dm = DeviceMapper::Instance();
 
     DmTable table;
@@ -98,6 +98,13 @@
     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;
 }
@@ -115,7 +122,7 @@
             continue;
         }
         std::string path;
-        if (!CreateLogicalPartition(block_device, *metadata.get(), partition, false, &path)) {
+        if (!CreateLogicalPartition(block_device, *metadata.get(), partition, false, {}, &path)) {
             LERROR << "Could not create logical partition: " << GetPartitionName(partition);
             return false;
         }
@@ -125,7 +132,7 @@
 
 bool CreateLogicalPartition(const std::string& block_device, uint32_t metadata_slot,
                             const std::string& partition_name, bool force_writable,
-                            std::string* path) {
+                            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.";
@@ -134,18 +141,26 @@
     for (const auto& partition : metadata->partitions) {
         if (GetPartitionName(partition) == partition_name) {
             return CreateLogicalPartition(block_device, *metadata.get(), partition, force_writable,
-                                          path);
+                                          timeout_ms, path);
         }
     }
     LERROR << "Could not find any partition with name: " << partition_name;
     return false;
 }
 
-bool DestroyLogicalPartition(const std::string& name) {
+bool DestroyLogicalPartition(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)) {
         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;
+        return false;
+    }
     LINFO << "Unmapped logical partition " << name;
     return true;
 }
diff --git a/fs_mgr/fs_mgr_overlayfs.cpp b/fs_mgr/fs_mgr_overlayfs.cpp
index fb57715..720dcfd 100644
--- a/fs_mgr/fs_mgr_overlayfs.cpp
+++ b/fs_mgr/fs_mgr_overlayfs.cpp
@@ -141,14 +141,13 @@
 constexpr char upperdir_option[] = "upperdir=";
 
 // default options for mount_point, returns empty string for none available.
-std::string fs_mgr_get_overlayfs_options(const char* mount_point) {
-    auto fsrec_mount_point = std::string(mount_point);
-    auto candidate = fs_mgr_get_overlayfs_candidate(fsrec_mount_point);
+std::string fs_mgr_get_overlayfs_options(const std::string& mount_point) {
+    auto candidate = fs_mgr_get_overlayfs_candidate(mount_point);
     if (candidate.empty()) return "";
 
-    auto context = fs_mgr_get_context(fsrec_mount_point);
+    auto context = fs_mgr_get_context(mount_point);
     if (!context.empty()) context = ",rootcontext="s + context;
-    return "override_creds=off,"s + lowerdir_option + fsrec_mount_point + "," + upperdir_option +
+    return "override_creds=off,"s + lowerdir_option + mount_point + "," + upperdir_option +
            candidate + upper_name + ",workdir=" + candidate + work_name + context;
 }
 
@@ -167,10 +166,11 @@
     return true;
 }
 
-std::string fs_mgr_get_overlayfs_options(const fstab* fstab, const char* mount_point) {
-    if (fs_mgr_system_root_image(fstab) && ("/"s == mount_point)) mount_point = "/system";
-
-    return fs_mgr_get_overlayfs_options(mount_point);
+const char* fs_mgr_mount_point(const fstab* fstab, const char* mount_point) {
+    if (!mount_point) return mount_point;
+    if ("/"s != mount_point) return mount_point;
+    if (!fs_mgr_system_root_image(fstab)) return mount_point;
+    return "/system";
 }
 
 // return true if system supports overlayfs
@@ -196,7 +196,7 @@
     if (!fsrec) return false;
 
     auto fsrec_mount_point = fsrec->mount_point;
-    if (!fsrec_mount_point) return false;
+    if (!fsrec_mount_point || !fsrec_mount_point[0]) return false;
     if (!fsrec->blk_device) return false;
 
     if (!fsrec->fs_type) return false;
@@ -265,10 +265,17 @@
     return ret;
 }
 
+constexpr char overlayfs_file_context[] = "u:object_r:overlayfs_file:s0";
+
 bool fs_mgr_overlayfs_setup_one(const std::string& overlay, const std::string& mount_point,
                                 bool* change) {
     auto ret = true;
     auto fsrec_mount_point = overlay + android::base::Basename(mount_point) + "/";
+
+    if (setfscreatecon(overlayfs_file_context)) {
+        ret = false;
+        PERROR << "overlayfs setfscreatecon " << overlayfs_file_context;
+    }
     auto save_errno = errno;
     if (!mkdir(fsrec_mount_point.c_str(), 0755)) {
         if (change) *change = true;
@@ -288,6 +295,7 @@
     } else {
         errno = save_errno;
     }
+    setfscreatecon(nullptr);
 
     auto new_context = fs_mgr_get_context(mount_point);
     if (!new_context.empty() && setfscreatecon(new_context.c_str())) {
@@ -309,15 +317,12 @@
     return ret;
 }
 
-bool fs_mgr_overlayfs_mount(const fstab* fstab, const fstab_rec* fsrec) {
-    if (!fs_mgr_wants_overlayfs(fsrec)) return false;
-    auto fsrec_mount_point = fsrec->mount_point;
-    if (!fsrec_mount_point || !fsrec_mount_point[0]) return false;
-    auto options = fs_mgr_get_overlayfs_options(fstab, fsrec_mount_point);
+bool fs_mgr_overlayfs_mount(const std::string& mount_point) {
+    auto options = fs_mgr_get_overlayfs_options(mount_point);
     if (options.empty()) return false;
 
     // hijack __mount() report format to help triage
-    auto report = "__mount(source=overlay,target="s + fsrec_mount_point + ",type=overlay";
+    auto report = "__mount(source=overlay,target="s + mount_point + ",type=overlay";
     const auto opt_list = android::base::Split(options, ",");
     for (const auto opt : opt_list) {
         if (android::base::StartsWith(opt, upperdir_option)) {
@@ -327,7 +332,7 @@
     }
     report = report + ")=";
 
-    auto ret = mount("overlay", fsrec_mount_point, "overlay", MS_RDONLY | MS_RELATIME,
+    auto ret = mount("overlay", mount_point.c_str(), "overlay", MS_RDONLY | MS_RELATIME,
                      options.c_str());
     if (ret) {
         PERROR << report << ret;
@@ -338,8 +343,7 @@
     }
 }
 
-bool fs_mgr_overlayfs_already_mounted(const char* mount_point) {
-    if (!mount_point) return false;
+bool fs_mgr_overlayfs_already_mounted(const std::string& mount_point) {
     std::unique_ptr<struct fstab, decltype(&fs_mgr_free_fstab)> fstab(
             fs_mgr_read_fstab("/proc/mounts"), fs_mgr_free_fstab);
     if (!fstab) return false;
@@ -351,7 +355,7 @@
         if (("overlay"s != fs_type) && ("overlayfs"s != fs_type)) continue;
         auto fsrec_mount_point = fsrec->mount_point;
         if (!fsrec_mount_point) continue;
-        if (strcmp(fsrec_mount_point, mount_point)) continue;
+        if (mount_point != fsrec_mount_point) continue;
         const auto fs_options = fsrec->fs_options;
         if (!fs_options) continue;
         const auto options = android::base::Split(fs_options, ",");
@@ -364,6 +368,34 @@
     return false;
 }
 
+std::vector<std::string> fs_mgr_candidate_list(const fstab* fstab,
+                                               const char* mount_point = nullptr) {
+    std::vector<std::string> mounts;
+    if (!fstab) return mounts;
+
+    for (auto i = 0; i < fstab->num_entries; i++) {
+        const auto fsrec = &fstab->recs[i];
+        if (!fs_mgr_wants_overlayfs(fsrec)) continue;
+        std::string new_mount_point(fs_mgr_mount_point(fstab, fsrec->mount_point));
+        if (mount_point && (new_mount_point != mount_point)) continue;
+        auto duplicate_or_more_specific = false;
+        for (auto it = mounts.begin(); it != mounts.end();) {
+            if ((*it == new_mount_point) ||
+                (android::base::StartsWith(new_mount_point, *it + "/"))) {
+                duplicate_or_more_specific = true;
+                break;
+            }
+            if (android::base::StartsWith(*it, new_mount_point + "/")) {
+                it = mounts.erase(it);
+            } else {
+                ++it;
+            }
+        }
+        if (!duplicate_or_more_specific) mounts.emplace_back(new_mount_point);
+    }
+    return mounts;
+}
+
 }  // namespace
 
 bool fs_mgr_overlayfs_mount_all() {
@@ -375,13 +407,9 @@
                                                                       fs_mgr_free_fstab);
     if (!fstab) return ret;
 
-    for (auto i = 0; i < fstab->num_entries; i++) {
-        const auto fsrec = &fstab->recs[i];
-        auto fsrec_mount_point = fsrec->mount_point;
-        if (!fsrec_mount_point) continue;
-        if (fs_mgr_overlayfs_already_mounted(fsrec_mount_point)) continue;
-
-        if (fs_mgr_overlayfs_mount(fstab.get(), fsrec)) ret = true;
+    for (const auto& mount_point : fs_mgr_candidate_list(fstab.get())) {
+        if (fs_mgr_overlayfs_already_mounted(mount_point)) continue;
+        if (fs_mgr_overlayfs_mount(mount_point)) ret = true;
     }
     return ret;
 }
@@ -404,22 +432,12 @@
 
     std::unique_ptr<struct fstab, decltype(&fs_mgr_free_fstab)> fstab(fs_mgr_read_fstab_default(),
                                                                       fs_mgr_free_fstab);
-    std::vector<std::string> mounts;
-    if (fstab) {
-        if (!fs_mgr_get_entry_for_mount_point(fstab.get(), kOverlayMountPoint)) return ret;
-        for (auto i = 0; i < fstab->num_entries; i++) {
-            const auto fsrec = &fstab->recs[i];
-            auto fsrec_mount_point = fsrec->mount_point;
-            if (!fsrec_mount_point) continue;
-            if (mount_point && strcmp(fsrec_mount_point, mount_point)) continue;
-            if (!fs_mgr_wants_overlayfs(fsrec)) continue;
-            mounts.emplace_back(fsrec_mount_point);
-        }
-        if (mounts.empty()) return ret;
-    }
+    if (fstab && !fs_mgr_get_entry_for_mount_point(fstab.get(), kOverlayMountPoint)) return ret;
+    auto mounts = fs_mgr_candidate_list(fstab.get(), fs_mgr_mount_point(fstab.get(), mount_point));
+    if (fstab && mounts.empty()) return ret;
 
-    if (mount_point && ("/"s == mount_point) && fs_mgr_system_root_image(fstab.get())) {
-        mount_point = "/system";
+    if (setfscreatecon(overlayfs_file_context)) {
+        PERROR << "overlayfs setfscreatecon " << overlayfs_file_context;
     }
     auto overlay = kOverlayMountPoint + "/overlay/";
     auto save_errno = errno;
@@ -430,6 +448,7 @@
     } else {
         errno = save_errno;
     }
+    setfscreatecon(nullptr);
     if (!fstab && mount_point && fs_mgr_overlayfs_setup_one(overlay, mount_point, change)) {
         ret = true;
     }
@@ -443,11 +462,10 @@
 // If something is altered, set *change.
 bool fs_mgr_overlayfs_teardown(const char* mount_point, bool* change) {
     if (change) *change = false;
-    if (mount_point && ("/"s == mount_point)) {
-        std::unique_ptr<struct fstab, decltype(&fs_mgr_free_fstab)> fstab(
-                fs_mgr_read_fstab_default(), fs_mgr_free_fstab);
-        if (fs_mgr_system_root_image(fstab.get())) mount_point = "/system";
-    }
+    mount_point = fs_mgr_mount_point(std::unique_ptr<struct fstab, decltype(&fs_mgr_free_fstab)>(
+                                             fs_mgr_read_fstab_default(), fs_mgr_free_fstab)
+                                             .get(),
+                                     mount_point);
     auto ret = true;
     const auto overlay = kOverlayMountPoint + "/overlay";
     const auto oldpath = overlay + (mount_point ?: "");
diff --git a/fs_mgr/fs_mgr_priv.h b/fs_mgr/fs_mgr_priv.h
index a347faf..ebc4a0f 100644
--- a/fs_mgr/fs_mgr_priv.h
+++ b/fs_mgr/fs_mgr_priv.h
@@ -119,9 +119,13 @@
 
 using namespace std::chrono_literals;
 
-int fs_mgr_set_blk_ro(const char *blockdev);
+enum class FileWaitMode { Exists, DoesNotExist };
+
 bool fs_mgr_wait_for_file(const std::string& filename,
-                          const std::chrono::milliseconds relative_timeout);
+                          const std::chrono::milliseconds relative_timeout,
+                          FileWaitMode wait_mode = FileWaitMode::Exists);
+
+int fs_mgr_set_blk_ro(const char* blockdev);
 bool fs_mgr_update_for_slotselect(struct fstab *fstab);
 bool fs_mgr_is_device_unlocked();
 const std::string& get_android_dt_dir();
diff --git a/fs_mgr/include/fs_mgr_dm_linear.h b/fs_mgr/include/fs_mgr_dm_linear.h
index f15c450..08f4554 100644
--- a/fs_mgr/include/fs_mgr_dm_linear.h
+++ b/fs_mgr/include/fs_mgr_dm_linear.h
@@ -27,6 +27,7 @@
 
 #include <stdint.h>
 
+#include <chrono>
 #include <memory>
 #include <string>
 #include <vector>
@@ -43,12 +44,16 @@
 // 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,
-                            std::string* path);
+                            const std::chrono::milliseconds& timeout_ms, std::string* path);
 
-// Destroy the block device for a logical partition, by name.
-bool DestroyLogicalPartition(const std::string& name);
+// 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);
 
 }  // namespace fs_mgr
 }  // namespace android
diff --git a/fs_mgr/libdm/dm.cpp b/fs_mgr/libdm/dm.cpp
index 8bcbec2..c4b57c7 100644
--- a/fs_mgr/libdm/dm.cpp
+++ b/fs_mgr/libdm/dm.cpp
@@ -98,9 +98,16 @@
     return nullptr;
 }
 
-DmDeviceState DeviceMapper::state(const std::string& /* name */) const {
-    // TODO(b/110035986): Return the state, as read from the kernel instead
-    return DmDeviceState::INVALID;
+DmDeviceState DeviceMapper::GetState(const std::string& name) const {
+    struct dm_ioctl io;
+    InitIo(&io, name);
+    if (ioctl(fd_, DM_DEV_STATUS, &io) < 0) {
+        return DmDeviceState::INVALID;
+    }
+    if ((io.flags & DM_ACTIVE_PRESENT_FLAG) && !(io.flags & DM_SUSPEND_FLAG)) {
+        return DmDeviceState::ACTIVE;
+    }
+    return DmDeviceState::SUSPENDED;
 }
 
 bool DeviceMapper::CreateDevice(const std::string& name, const DmTable& table) {
@@ -271,7 +278,7 @@
     struct dm_ioctl io;
     InitIo(&io, name);
     if (ioctl(fd_, DM_DEV_STATUS, &io) < 0) {
-        PLOG(ERROR) << "DM_DEV_STATUS failed for " << name;
+        PLOG(WARNING) << "DM_DEV_STATUS failed for " << name;
         return false;
     }
 
diff --git a/fs_mgr/libdm/include/libdm/dm.h b/fs_mgr/libdm/include/libdm/dm.h
index 9b61ddc..91f8bb4 100644
--- a/fs_mgr/libdm/include/libdm/dm.h
+++ b/fs_mgr/libdm/include/libdm/dm.h
@@ -79,7 +79,7 @@
     // Returns the current state of the underlying device mapper device
     // with given name.
     // One of INVALID, SUSPENDED or ACTIVE.
-    DmDeviceState state(const std::string& name) const;
+    DmDeviceState GetState(const std::string& name) const;
 
     // 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.
diff --git a/fs_mgr/liblp/builder.cpp b/fs_mgr/liblp/builder.cpp
index 2015e4d..018c280 100644
--- a/fs_mgr/liblp/builder.cpp
+++ b/fs_mgr/liblp/builder.cpp
@@ -386,6 +386,7 @@
     }
 
     const uint64_t sectors_per_block = device_info_.logical_block_size / LP_SECTOR_SIZE;
+    CHECK_NE(sectors_per_block, 0);
     CHECK(sectors_needed % sectors_per_block == 0);
 
     // Find gaps that we can use for new extents. Note we store new extents in a
diff --git a/fs_mgr/liblp/include/liblp/builder.h b/fs_mgr/liblp/include/liblp/builder.h
index a35cf8e..38842a4 100644
--- a/fs_mgr/liblp/include/liblp/builder.h
+++ b/fs_mgr/liblp/include/liblp/builder.h
@@ -192,6 +192,10 @@
 
   private:
     MetadataBuilder();
+    MetadataBuilder(const MetadataBuilder&) = delete;
+    MetadataBuilder(MetadataBuilder&&) = delete;
+    MetadataBuilder& operator=(const MetadataBuilder&) = delete;
+    MetadataBuilder& operator=(MetadataBuilder&&) = delete;
     bool Init(const BlockDeviceInfo& info, uint32_t metadata_max_size, uint32_t metadata_slot_count);
     bool Init(const LpMetadata& metadata);
     bool GrowPartition(Partition* partition, uint64_t aligned_size);
diff --git a/fs_mgr/liblp/reader.cpp b/fs_mgr/liblp/reader.cpp
index 117f5d5..190c650 100644
--- a/fs_mgr/liblp/reader.cpp
+++ b/fs_mgr/liblp/reader.cpp
@@ -314,7 +314,7 @@
         return nullptr;
     }
 
-    // Read the priamry copy, and if that fails, try the backup.
+    // Read the primary copy, and if that fails, try the backup.
     std::unique_ptr<LpMetadata> metadata = ReadPrimaryMetadata(fd, geometry, slot_number);
     if (metadata) {
         return metadata;
diff --git a/healthd/Android.mk b/healthd/Android.mk
index f7214c6..9096f79 100644
--- a/healthd/Android.mk
+++ b/healthd/Android.mk
@@ -43,7 +43,7 @@
     AnimationParser.cpp
 
 LOCAL_MODULE := libhealthd_charger
-LOCAL_C_INCLUDES := bootable/recovery $(LOCAL_PATH)/include
+LOCAL_C_INCLUDES := $(LOCAL_PATH)/include
 LOCAL_EXPORT_C_INCLUDE_DIRS := \
     $(LOCAL_PATH) \
     $(LOCAL_PATH)/include
diff --git a/init/Android.bp b/init/Android.bp
index a2c49d0..c793971 100644
--- a/init/Android.bp
+++ b/init/Android.bp
@@ -68,6 +68,7 @@
     ],
     shared_libs: [
         "libbase",
+        "libbinder",
         "libbootloader_message",
         "libcutils",
         "libdl",
@@ -78,6 +79,7 @@
         "liblog",
         "liblogwrap",
         "libselinux",
+        "libutils",
     ],
 }
 
@@ -127,6 +129,13 @@
         type: "lite",
         export_proto_headers: true,
     },
+
+    target: {
+        recovery: {
+            cflags: ["-DRECOVERY"],
+            exclude_shared_libs: ["libbinder", "libutils"],
+        },
+    },
 }
 
 cc_binary {
@@ -143,6 +152,12 @@
     ],
     srcs: ["main.cpp"],
     symlinks: ["ueventd"],
+    target: {
+        recovery: {
+            cflags: ["-DRECOVERY"],
+            exclude_shared_libs: ["libbinder", "libutils"],
+        },
+    },
 }
 
 // Tests
diff --git a/init/Android.mk b/init/Android.mk
index ada87b8..5554995 100644
--- a/init/Android.mk
+++ b/init/Android.mk
@@ -47,6 +47,7 @@
     init_first_stage.cpp \
     reboot_utils.cpp \
     selinux.cpp \
+    switch_root.cpp \
     uevent_listener.cpp \
     util.cpp \
 
@@ -54,8 +55,15 @@
 
 LOCAL_FORCE_STATIC_EXECUTABLE := true
 
-LOCAL_MODULE_PATH := $(TARGET_ROOT_OUT)
-LOCAL_UNSTRIPPED_PATH := $(TARGET_ROOT_OUT_UNSTRIPPED)
+LOCAL_MODULE_PATH := $(TARGET_RAMDISK_OUT)
+LOCAL_UNSTRIPPED_PATH := $(TARGET_RAMDISK_OUT_UNSTRIPPED)
+
+# Set up the same mount points on the ramdisk that system-as-root contains.
+LOCAL_POST_INSTALL_CMD := \
+    mkdir -p $(TARGET_RAMDISK_OUT)/dev \
+    $(TARGET_RAMDISK_OUT)/mnt \
+    $(TARGET_RAMDISK_OUT)/proc \
+    $(TARGET_RAMDISK_OUT)/sys \
 
 LOCAL_STATIC_LIBRARIES := \
     libfs_mgr \
diff --git a/init/first_stage_mount.cpp b/init/first_stage_mount.cpp
index 0c5cf76..79cfbcb 100644
--- a/init/first_stage_mount.cpp
+++ b/init/first_stage_mount.cpp
@@ -29,19 +29,22 @@
 #include <android-base/file.h>
 #include <android-base/logging.h>
 #include <android-base/strings.h>
+#include <fs_mgr.h>
+#include <fs_mgr_avb.h>
+#include <fs_mgr_dm_linear.h>
+#include <fs_mgr_overlayfs.h>
 #include <liblp/metadata_format.h>
 
 #include "devices.h"
-#include "fs_mgr.h"
-#include "fs_mgr_avb.h"
-#include "fs_mgr_dm_linear.h"
-#include "fs_mgr_overlayfs.h"
+#include "switch_root.h"
 #include "uevent.h"
 #include "uevent_listener.h"
 #include "util.h"
 
 using android::base::Timer;
 
+using namespace std::literals;
+
 namespace android {
 namespace init {
 
@@ -63,6 +66,7 @@
     bool InitRequiredDevices();
     bool InitMappedDevice(const std::string& verity_device);
     bool CreateLogicalPartitions();
+    bool MountPartition(fstab_rec* fstab_rec);
     bool MountPartitions();
     bool GetBackingDmLinearDevices();
 
@@ -116,8 +120,14 @@
     return is_android_dt_value_expected("vbmeta/compatible", "android,vbmeta");
 }
 
-static bool inline IsRecoveryMode() {
-    return access("/system/bin/recovery", F_OK) == 0;
+static bool IsRecoveryMode() {
+    static bool force_normal_boot = []() {
+        std::string cmdline;
+        android::base::ReadFileToString("/proc/cmdline", &cmdline);
+        return cmdline.find("androidboot.force_normal_boot=1") != std::string::npos;
+    }();
+
+    return !force_normal_boot && access("/system/bin/recovery", F_OK) == 0;
 }
 
 static inline bool IsDmLinearEnabled() {
@@ -333,26 +343,53 @@
     return true;
 }
 
-bool FirstStageMount::MountPartitions() {
-    for (auto fstab_rec : mount_fstab_recs_) {
-        if (fs_mgr_is_logical(fstab_rec)) {
-            if (!fs_mgr_update_logical_partition(fstab_rec)) {
-                return false;
-            }
-            if (!InitMappedDevice(fstab_rec->blk_device)) {
-                return false;
-            }
-        }
-        if (!SetUpDmVerity(fstab_rec)) {
-            PLOG(ERROR) << "Failed to setup verity for '" << fstab_rec->mount_point << "'";
+bool FirstStageMount::MountPartition(fstab_rec* fstab_rec) {
+    if (fs_mgr_is_logical(fstab_rec)) {
+        if (!fs_mgr_update_logical_partition(fstab_rec)) {
             return false;
         }
-        if (fs_mgr_do_mount_one(fstab_rec)) {
-            PLOG(ERROR) << "Failed to mount '" << fstab_rec->mount_point << "'";
+        if (!InitMappedDevice(fstab_rec->blk_device)) {
             return false;
         }
     }
+    if (!SetUpDmVerity(fstab_rec)) {
+        PLOG(ERROR) << "Failed to setup verity for '" << fstab_rec->mount_point << "'";
+        return false;
+    }
+    if (fs_mgr_do_mount_one(fstab_rec)) {
+        PLOG(ERROR) << "Failed to mount '" << fstab_rec->mount_point << "'";
+        return false;
+    }
+    return true;
+}
+
+bool FirstStageMount::MountPartitions() {
+    // 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.
+    auto system_partition =
+            std::find_if(mount_fstab_recs_.begin(), mount_fstab_recs_.end(), [](const auto& rec) {
+                return rec->mount_point == "/system"s ||
+                       rec->mount_point == "/system_recovery_mount"s;
+            });
+    if (system_partition != mount_fstab_recs_.end()) {
+        if (!MountPartition(*system_partition)) {
+            return false;
+        }
+
+        SwitchRoot((*system_partition)->mount_point);
+
+        mount_fstab_recs_.erase(system_partition);
+    }
+
+    for (auto fstab_rec : mount_fstab_recs_) {
+        if (!MountPartition(fstab_rec) && !fs_mgr_is_nofail(fstab_rec)) {
+            return false;
+        }
+    }
+
     fs_mgr_overlayfs_mount_all();
+
     return true;
 }
 
diff --git a/init/init.cpp b/init/init.cpp
index 16564f4..3ab0a52 100644
--- a/init/init.cpp
+++ b/init/init.cpp
@@ -41,6 +41,10 @@
 #include <keyutils.h>
 #include <libavb/libavb.h>
 
+#ifndef RECOVERY
+#include <binder/ProcessState.h>
+#endif
+
 #include "action_parser.h"
 #include "epoll.h"
 #include "first_stage_mount.h"
@@ -413,6 +417,22 @@
     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);
+#endif
+    return Success();
+}
+
 // 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.
@@ -673,6 +693,9 @@
     // 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") {
diff --git a/init/switch_root.cpp b/init/switch_root.cpp
new file mode 100644
index 0000000..0e59b57
--- /dev/null
+++ b/init/switch_root.cpp
@@ -0,0 +1,151 @@
+/*
+ * 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 "switch_root.h"
+
+#include <dirent.h>
+#include <fcntl.h>
+#include <mntent.h>
+#include <sys/mount.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include <android-base/logging.h>
+#include <android-base/strings.h>
+
+using android::base::StartsWith;
+
+using namespace std::literals;
+
+namespace android {
+namespace init {
+
+namespace {
+
+void FreeRamdisk(DIR* dir, dev_t dev) {
+    int dfd = dirfd(dir);
+
+    dirent* de;
+    while ((de = readdir(dir)) != nullptr) {
+        if (de->d_name == "."s || de->d_name == ".."s) {
+            continue;
+        }
+
+        bool is_dir = false;
+
+        if (de->d_type == DT_DIR || de->d_type == DT_UNKNOWN) {
+            struct stat info;
+            if (fstatat(dfd, de->d_name, &info, AT_SYMLINK_NOFOLLOW) != 0) {
+                continue;
+            }
+
+            if (info.st_dev != dev) {
+                continue;
+            }
+
+            if (S_ISDIR(info.st_mode)) {
+                is_dir = true;
+                auto fd = openat(dfd, de->d_name, O_RDONLY | O_DIRECTORY);
+                if (fd >= 0) {
+                    auto subdir =
+                            std::unique_ptr<DIR, decltype(&closedir)>{fdopendir(fd), closedir};
+                    if (subdir) {
+                        FreeRamdisk(subdir.get(), dev);
+                    } else {
+                        close(fd);
+                    }
+                }
+            }
+        }
+        unlinkat(dfd, de->d_name, is_dir ? AT_REMOVEDIR : 0);
+    }
+}
+
+std::vector<std::string> GetMounts(const std::string& new_root) {
+    auto fp = std::unique_ptr<std::FILE, decltype(&endmntent)>{setmntent("/proc/mounts", "re"),
+                                                               endmntent};
+    if (fp == nullptr) {
+        PLOG(FATAL) << "Failed to open /proc/mounts";
+    }
+
+    std::vector<std::string> result;
+    mntent* mentry;
+    while ((mentry = getmntent(fp.get())) != nullptr) {
+        // We won't try to move rootfs.
+        if (mentry->mnt_dir == "/"s) {
+            continue;
+        }
+
+        // The new root mount is handled separately.
+        if (mentry->mnt_dir == new_root) {
+            continue;
+        }
+
+        // Move operates on subtrees, so do not try to move children of other mounts.
+        if (std::find_if(result.begin(), result.end(), [&mentry](const auto& older_mount) {
+                return StartsWith(mentry->mnt_dir, older_mount);
+            }) != result.end()) {
+            continue;
+        }
+
+        result.emplace_back(mentry->mnt_dir);
+    }
+
+    return result;
+}
+
+}  // namespace
+
+void SwitchRoot(const std::string& new_root) {
+    auto mounts = GetMounts(new_root);
+
+    for (const auto& mount_path : mounts) {
+        auto new_mount_path = new_root + mount_path;
+        if (mount(mount_path.c_str(), new_mount_path.c_str(), nullptr, MS_MOVE, nullptr) != 0) {
+            PLOG(FATAL) << "Unable to move mount at '" << mount_path << "'";
+        }
+    }
+
+    auto old_root_dir = std::unique_ptr<DIR, decltype(&closedir)>{opendir("/"), closedir};
+    if (!old_root_dir) {
+        PLOG(ERROR) << "Could not opendir(\"/\"), not freeing ramdisk";
+    }
+
+    struct stat old_root_info;
+    if (stat("/", &old_root_info) != 0) {
+        PLOG(ERROR) << "Could not stat(\"/\"), not freeing ramdisk";
+        old_root_dir.reset();
+    }
+
+    if (chdir(new_root.c_str()) != 0) {
+        PLOG(FATAL) << "Could not chdir to new_root, '" << new_root << "'";
+    }
+
+    if (mount(new_root.c_str(), "/", nullptr, MS_MOVE, nullptr) != 0) {
+        PLOG(FATAL) << "Unable to move root mount to new_root, '" << new_root << "'";
+    }
+
+    if (chroot(".") != 0) {
+        PLOG(FATAL) << "Unable to chroot to new root";
+    }
+
+    if (old_root_dir) {
+        FreeRamdisk(old_root_dir.get(), old_root_info.st_dev);
+    }
+}
+
+}  // namespace init
+}  // namespace android
diff --git a/init/switch_root.h b/init/switch_root.h
new file mode 100644
index 0000000..d515e5d
--- /dev/null
+++ b/init/switch_root.h
@@ -0,0 +1,27 @@
+/*
+ * 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>
+
+namespace android {
+namespace init {
+
+void SwitchRoot(const std::string& new_root);
+
+}  // namespace init
+}  // namespace android
diff --git a/libbacktrace/Android.bp b/libbacktrace/Android.bp
index a10e636..c42ae49 100644
--- a/libbacktrace/Android.bp
+++ b/libbacktrace/Android.bp
@@ -89,29 +89,20 @@
                 "libbase",
                 "liblog",
                 "libunwindstack",
-                "libdexfile",
             ],
 
             static_libs: [
                 "libprocinfo",
             ],
-
-            // libdexfile will eventually properly export headers, for now
-            // include these directly.
-            include_dirs: [
-                "art/runtime",
-            ],
         },
         android: {
             static_libs: ["libasync_safe"],
         },
         vendor: {
             cflags: ["-DNO_LIBDEXFILE_SUPPORT"],
-            exclude_shared_libs: ["libdexfile"],
         },
         recovery: {
             cflags: ["-DNO_LIBDEXFILE_SUPPORT"],
-            exclude_shared_libs: ["libdexfile"],
         },
     },
     whole_static_libs: ["libdemangle"],
@@ -154,7 +145,6 @@
     shared_libs: [
         "libbacktrace_test",
         "libbacktrace",
-        "libdexfile",
         "libbase",
         "liblog",
         "libunwindstack",
@@ -174,12 +164,6 @@
         },
     },
 
-    // libdexfile will eventually properly export headers, for now
-    // include these directly.
-    include_dirs: [
-        "art/runtime",
-    ],
-
     test_suites: ["device-tests"],
     data: [
         "testdata/arm/*",
diff --git a/libcutils/tests/sched_policy_test.cpp b/libcutils/tests/sched_policy_test.cpp
index 5942ee5..1f657e2 100644
--- a/libcutils/tests/sched_policy_test.cpp
+++ b/libcutils/tests/sched_policy_test.cpp
@@ -67,6 +67,21 @@
 }
 
 TEST(SchedPolicy, set_sched_policy) {
+    if (!schedboost_enabled()) {
+        // schedboost_enabled() (i.e. CONFIG_CGROUP_SCHEDTUNE) is optional;
+        // it's only needed on devices using energy-aware scheduler.
+        GTEST_LOG_(INFO) << "skipping test that requires CONFIG_CGROUP_SCHEDTUNE";
+        return;
+    }
+
+    ASSERT_EQ(0, set_sched_policy(0, SP_BACKGROUND));
+    AssertPolicy(SP_BACKGROUND);
+
+    ASSERT_EQ(0, set_sched_policy(0, SP_FOREGROUND));
+    AssertPolicy(SP_FOREGROUND);
+}
+
+TEST(SchedPolicy, set_sched_policy_timerslack) {
     if (!hasCapSysNice()) {
         GTEST_LOG_(INFO) << "skipping test that requires CAP_SYS_NICE";
         return;
@@ -82,11 +97,9 @@
     const unsigned int BG_FG_SLACK_FACTOR = 100;
 
     ASSERT_EQ(0, set_sched_policy(0, SP_BACKGROUND));
-    AssertPolicy(SP_BACKGROUND);
     auto bgSleepTime = medianSleepTime();
 
     ASSERT_EQ(0, set_sched_policy(0, SP_FOREGROUND));
-    AssertPolicy(SP_FOREGROUND);
     auto fgSleepTime = medianSleepTime();
     ASSERT_GT(bgSleepTime, fgSleepTime * BG_FG_SLACK_FACTOR);
 }
diff --git a/liblog/tests/liblog_test.cpp b/liblog/tests/liblog_test.cpp
index a8a9a12..d1f20f4 100644
--- a/liblog/tests/liblog_test.cpp
+++ b/liblog/tests/liblog_test.cpp
@@ -30,6 +30,7 @@
 #include <string>
 
 #include <android-base/file.h>
+#include <android-base/macros.h>
 #include <android-base/stringprintf.h>
 #ifdef __ANDROID__  // includes sys/properties.h which does not exist outside
 #include <cutils/properties.h>
@@ -2516,7 +2517,7 @@
 #endif
         elem.data.string = const_cast<char*>("<unknown>");
         elem.len = strlen(elem.data.string);
-      /* FALLTHRU */
+        FALLTHROUGH_INTENDED;
       case EVENT_TYPE_STRING:
         if (elem.len <= strOutLen) {
           memcpy(strOut, elem.data.string, elem.len);
diff --git a/libmemunreachable/MemUnreachable.cpp b/libmemunreachable/MemUnreachable.cpp
index 529a043..b160de9 100644
--- a/libmemunreachable/MemUnreachable.cpp
+++ b/libmemunreachable/MemUnreachable.cpp
@@ -244,7 +244,7 @@
     } else if (mapping_name == "[anon:libc_malloc]") {
       // named malloc mapping
       heap_mappings.emplace_back(*it);
-    } else if (has_prefix(mapping_name, "/dev/ashmem/dalvik")) {
+    } else if (has_prefix(mapping_name, "[anon:dalvik-")) {
       // named dalvik heap mapping
       globals_mappings.emplace_back(*it);
     } else if (has_prefix(mapping_name, "[stack")) {
diff --git a/libnativebridge/include/nativebridge/native_bridge.h b/libnativebridge/include/nativebridge/native_bridge.h
index 9bfc935..28f1927 100644
--- a/libnativebridge/include/nativebridge/native_bridge.h
+++ b/libnativebridge/include/nativebridge/native_bridge.h
@@ -99,7 +99,7 @@
 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.
+// 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.
diff --git a/libnativeloader/include/nativeloader/native_loader.h b/libnativeloader/include/nativeloader/native_loader.h
index 19a1783..c1d9d2a 100644
--- a/libnativeloader/include/nativeloader/native_loader.h
+++ b/libnativeloader/include/nativeloader/native_loader.h
@@ -47,8 +47,9 @@
                         bool* needs_native_bridge,
                         std::string* error_msg);
 
-__attribute__((visibility("default")))
-bool CloseNativeLibrary(void* handle, const bool needs_native_bridge);
+__attribute__((visibility("default"))) bool CloseNativeLibrary(void* handle,
+                                                               const bool needs_native_bridge,
+                                                               std::string* error_msg);
 
 #if defined(__ANDROID__)
 // Look up linker namespace by class_loader. Returns nullptr if
diff --git a/libnativeloader/native_loader.cpp b/libnativeloader/native_loader.cpp
index 67c1c10..b3e2b97 100644
--- a/libnativeloader/native_loader.cpp
+++ b/libnativeloader/native_loader.cpp
@@ -710,9 +710,21 @@
 #endif
 }
 
-bool CloseNativeLibrary(void* handle, const bool needs_native_bridge) {
-    return needs_native_bridge ? NativeBridgeUnloadLibrary(handle) :
-                                 dlclose(handle);
+bool CloseNativeLibrary(void* handle, const bool needs_native_bridge, std::string* error_msg) {
+  bool success;
+  if (needs_native_bridge) {
+    success = (NativeBridgeUnloadLibrary(handle) == 0);
+    if (!success) {
+      *error_msg = NativeBridgeGetError();
+    }
+  } else {
+    success = (dlclose(handle) == 0);
+    if (!success) {
+      *error_msg = dlerror();
+    }
+  }
+
+  return success;
 }
 
 #if defined(__ANDROID__)
diff --git a/libpixelflinger/Android.mk b/libpixelflinger/Android.mk
index c7306cd..8c80f6a 100644
--- a/libpixelflinger/Android.mk
+++ b/libpixelflinger/Android.mk
@@ -72,8 +72,8 @@
 LOCAL_SRC_FILES_mips64 := $(PIXELFLINGER_SRC_FILES_mips64)
 LOCAL_CFLAGS := $(PIXELFLINGER_CFLAGS)
 LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)/include
-LOCAL_C_INCLUDES += $(LOCAL_EXPORT_C_INCLUDE_DIRS) \
-		    external/safe-iop/include
+LOCAL_C_INCLUDES += $(LOCAL_EXPORT_C_INCLUDE_DIRS)
+LOCAL_HEADER_LIBRARIES := libbase_headers
 LOCAL_SHARED_LIBRARIES := libcutils liblog libutils
 
 include $(BUILD_SHARED_LIBRARY)
diff --git a/libpixelflinger/arch-arm64/t32cb16blend.S b/libpixelflinger/arch-arm64/t32cb16blend.S
index b1a950d..a9733c0 100644
--- a/libpixelflinger/arch-arm64/t32cb16blend.S
+++ b/libpixelflinger/arch-arm64/t32cb16blend.S
@@ -49,7 +49,7 @@
  *      upper 16-bit pixels in DREG into FB
  *
  *
- * clobbered: w6, w7, w16, w17, w18
+ * clobbered: w6, w7, w15, w16, w17
  *
  */
 
@@ -73,8 +73,8 @@
     add     w16, w6, w16, lsr #8
     cmp     w16, #0x1F
     orr     w17, \FB, #(0x1F<<(16 + 11))
-    orr     w18, \FB, w16, lsl #(16 + 11)
-    csel    \FB, w17, w18, hi
+    orr     w15, \FB, w16, lsl #(16 + 11)
+    csel    \FB, w17, w15, hi
         // green
         and     w6, \DREG, #(0x3F<<(16 + 5))
         lsr     w17,w6,#(16+5)
@@ -84,8 +84,8 @@
         add     w6, w16, w6, lsr #8
         cmp     w6, #0x3F
         orr     w17, \FB, #(0x3F<<(16 + 5))
-        orr     w18, \FB, w6, lsl #(16 + 5)
-        csel    \FB, w17, w18, hi
+        orr     w15, \FB, w6, lsl #(16 + 5)
+        csel    \FB, w17, w15, hi
             // blue
             and     w16, \DREG, #(0x1F << 16)
             lsr     w17,w16,#16
@@ -95,8 +95,8 @@
             add     w16, w6, w16, lsr #8
             cmp     w16, #0x1F
             orr     w17, \FB, #(0x1F << 16)
-            orr     w18, \FB, w16, lsl #16
-            csel    \FB, w17, w18, hi
+            orr     w15, \FB, w16, lsl #16
+            csel    \FB, w17, w15, hi
 
 .else //Blending even pixel present in bottom 16 bits of DREG register
 
@@ -109,8 +109,8 @@
     add     w16, w6, w16, lsr #8
     cmp     w16, #0x1F
     mov     w17, #(0x1F<<11)
-    lsl     w18, w16, #11
-    csel    \FB, w17, w18, hi
+    lsl     w15, w16, #11
+    csel    \FB, w17, w15, hi
 
 
         // green
@@ -121,8 +121,8 @@
         add     w6, w16, w6, lsr #(5+8)
         cmp     w6, #0x3F
         orr     w17, \FB, #(0x3F<<5)
-        orr     w18, \FB, w6, lsl #5
-        csel    \FB, w17, w18, hi
+        orr     w15, \FB, w6, lsl #5
+        csel    \FB, w17, w15, hi
 
             // blue
             and     w16, \DREG, #0x1F
@@ -132,8 +132,8 @@
             add     w16, w6, w16, lsr #8
             cmp     w16, #0x1F
             orr     w17, \FB, #0x1F
-            orr     w18, \FB, w16
-            csel    \FB, w17, w18, hi
+            orr     w15, \FB, w16
+            csel    \FB, w17, w15, hi
 
 .endif // End of blending even pixel
 
diff --git a/libpixelflinger/buffer.cpp b/libpixelflinger/buffer.cpp
index dcb95c5..ea9514c 100644
--- a/libpixelflinger/buffer.cpp
+++ b/libpixelflinger/buffer.cpp
@@ -18,6 +18,8 @@
 
 #include <assert.h>
 
+#include <android-base/macros.h>
+
 #include "buffer.h"
 
 namespace android {
@@ -266,8 +268,11 @@
     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
-    case 2: p |= p << 16;
+        case 1:
+            p |= p << 8;
+            FALLTHROUGH_INTENDED;
+        case 2:
+            p |= p << 16;
     }
     return p;
 }
diff --git a/libpixelflinger/codeflinger/blending.cpp b/libpixelflinger/codeflinger/blending.cpp
index a55dfe3..2cbb00f 100644
--- a/libpixelflinger/codeflinger/blending.cpp
+++ b/libpixelflinger/codeflinger/blending.cpp
@@ -23,6 +23,7 @@
 #include <stdlib.h>
 #include <sys/types.h>
 
+#include <android-base/macros.h>
 #include <log/log.h>
 
 #include "GGLAssembler.h"
@@ -301,7 +302,7 @@
                 return;
             }                
         }
-        // fall-through...
+        FALLTHROUGH_INTENDED;
     case GGL_ONE_MINUS_DST_COLOR:
     case GGL_DST_COLOR:
     case GGL_ONE_MINUS_SRC_COLOR:
diff --git a/libprocessgroup/OWNERS b/libprocessgroup/OWNERS
new file mode 100644
index 0000000..bfa730a
--- /dev/null
+++ b/libprocessgroup/OWNERS
@@ -0,0 +1,2 @@
+ccross@google.com
+tomcherry@google.com
diff --git a/libprocessgroup/processgroup.cpp b/libprocessgroup/processgroup.cpp
index 1cebb5d..0a42053 100644
--- a/libprocessgroup/processgroup.cpp
+++ b/libprocessgroup/processgroup.cpp
@@ -185,7 +185,7 @@
 
     // Erase all pids that will be killed when we kill the process groups.
     for (auto it = pids.begin(); it != pids.end();) {
-        pid_t pgid = getpgid(pid);
+        pid_t pgid = getpgid(*it);
         if (pgids.count(pgid) == 1) {
             it = pids.erase(it);
         } else {
diff --git a/libprocinfo/process_map_test.cpp b/libprocinfo/process_map_test.cpp
index 900fd85..4b93c5b 100644
--- a/libprocinfo/process_map_test.cpp
+++ b/libprocinfo/process_map_test.cpp
@@ -44,7 +44,7 @@
   ASSERT_EQ(maps[0].end, 0x2ac00000ULL);
   ASSERT_EQ(maps[0].flags, PROT_READ | PROT_WRITE);
   ASSERT_EQ(maps[0].pgoff, 0ULL);
-  ASSERT_EQ(maps[0].name, "/dev/ashmem/dalvik-main space (region space) (deleted)");
+  ASSERT_EQ(maps[0].name, "[anon:dalvik-main space (region space)]");
   ASSERT_EQ(maps[876].start, 0x70e6c4f000ULL);
   ASSERT_EQ(maps[876].end, 0x70e6c6b000ULL);
   ASSERT_EQ(maps[876].flags, PROT_READ | PROT_EXEC);
@@ -55,6 +55,6 @@
   ASSERT_EQ(maps[1260].flags, PROT_READ);
   ASSERT_EQ(maps[1260].pgoff, 0ULL);
   ASSERT_EQ(maps[1260].name,
-            "/dev/ashmem/dalvik-classes.dex extracted in memory from "
-            "/data/app/com.google.sample.tunnel-HGGRU03Gu1Mwkf_-RnFmvw==/base.apk (deleted)");
+            "[anon:dalvik-classes.dex extracted in memory from "
+            "/data/app/com.google.sample.tunnel-HGGRU03Gu1Mwkf_-RnFmvw==/base.apk]");
 }
diff --git a/libprocinfo/testdata/maps b/libprocinfo/testdata/maps
index 3b312e3..098cf25 100644
--- a/libprocinfo/testdata/maps
+++ b/libprocinfo/testdata/maps
@@ -1,4 +1,4 @@
-12c00000-2ac00000 rw-p 00000000 00:05 10267643                           /dev/ashmem/dalvik-main space (region space) (deleted)
+12c00000-2ac00000 rw-p 00000000 00:05 10267643                           [anon:dalvik-main space (region space)]
 6fb5d000-6fd6e000 rw-p 00000000 103:1d 639511                            /data/dalvik-cache/arm64/system@framework@boot.art
 6fd6e000-6fd82000 r--p 00211000 103:1d 639511                            /data/dalvik-cache/arm64/system@framework@boot.art
 6fd82000-6fe47000 rw-p 00000000 103:1d 639514                            /data/dalvik-cache/arm64/system@framework@boot-core-libart.art
@@ -121,12 +121,12 @@
 73b88000-73b89000 r--s 00000000 fc:00 884                                /system/framework/boot-com.google.vr.platform.vdex
 73b89000-73b8a000 r--p 00004000 fc:00 899                                /system/framework/arm64/boot-com.google.vr.platform.oat
 73b8a000-73b8b000 rw-p 00005000 fc:00 899                                /system/framework/arm64/boot-com.google.vr.platform.oat
-73b8b000-73b93000 rw-p 00000000 00:05 10267640                           /dev/ashmem/dalvik-non moving space (deleted)
-73b93000-77b8b000 ---p 00008000 00:05 10267640                           /dev/ashmem/dalvik-non moving space (deleted)
-77b8b000-97b8b000 rw-p 00000000 00:05 10267645                           /dev/ashmem/dalvik-free list large object space (deleted)
-97b8b000-99b8b000 rw-p 00000000 00:05 10270989                           /dev/ashmem/dalvik-data-code-cache (deleted)
-99b8b000-9bb8b000 r-xp 00000000 00:05 10270990                           /dev/ashmem/dalvik-jit-code-cache (deleted)
-ebad6000-ebad7000 ---p 00000000 00:05 10269717                           /dev/ashmem/dalvik-Sentinel fault page (deleted)
+73b8b000-73b93000 rw-p 00000000 00:05 10267640                           [anon:dalvik-non moving space]
+73b93000-77b8b000 ---p 00008000 00:05 10267640                           [anon:dalvik-non moving space]
+77b8b000-97b8b000 rw-p 00000000 00:05 10267645                           [anon:dalvik-free list large object space]
+97b8b000-99b8b000 rw-p 00000000 00:05 10270989                           [anon:dalvik-data-code-cache]
+99b8b000-9bb8b000 r-xp 00000000 00:05 10270990                           [anon:dalvik-jit-code-cache]
+ebad6000-ebad7000 ---p 00000000 00:05 10269717                           [anon:dalvik-Sentinel fault page]
 7ffb6e000-7ffb76000 rw-s 000e5000 00:10 20630                            /dev/kgsl-3d0
 7ffb76000-7ffb78000 rw-s 000e0000 00:10 20630                            /dev/kgsl-3d0
 7ffbc3000-7ffbc4000 rw-s 000e8000 00:10 20630                            /dev/kgsl-3d0
@@ -453,7 +453,7 @@
 7058043000-7058044000 r--p 0002f000 fc:00 2354                           /system/lib64/libcompiler_rt.so
 7058044000-7058045000 rw-p 00030000 fc:00 2354                           /system/lib64/libcompiler_rt.so
 7058045000-70580b2000 rw-p 00000000 00:00 0                              [anon:.bss]
-70580bd000-70580dd000 rw-p 00000000 00:05 10265386                       /dev/ashmem/dalvik-LinearAlloc (deleted)
+70580bd000-70580dd000 rw-p 00000000 00:05 10265386                       [anon:dalvik-LinearAlloc]
 70580dd000-70580df000 r-xp 00000000 fc:00 2597                           /system/lib64/vndk-sp-28/libhardware.so
 70580df000-70580fc000 ---p 00000000 00:00 0 
 70580fc000-70580fd000 r--p 0000f000 fc:00 2597                           /system/lib64/vndk-sp-28/libhardware.so
@@ -568,9 +568,9 @@
 705fe4c000-705fe4d000 ---p 00000000 00:00 0                              [anon:thread stack guard]
 705fe4d000-705fe4e000 ---p 00000000 00:00 0 
 705fe4e000-705ff4a000 rw-p 00000000 00:00 0 
-705ff4a000-705ff4b000 ---p 00000000 00:05 10270991                       /dev/ashmem/dalvik-Jit thread pool worker thread 0 (deleted)
-705ff4b000-705ff4c000 ---p 00001000 00:05 10270991                       /dev/ashmem/dalvik-Jit thread pool worker thread 0 (deleted)
-705ff4c000-706004b000 rw-p 00002000 00:05 10270991                       /dev/ashmem/dalvik-Jit thread pool worker thread 0 (deleted)
+705ff4a000-705ff4b000 ---p 00000000 00:05 10270991                       [anon:dalvik-Jit thread pool worker thread 0]
+705ff4b000-705ff4c000 ---p 00001000 00:05 10270991                       [anon:dalvik-Jit thread pool worker thread 0]
+705ff4c000-706004b000 rw-p 00002000 00:05 10270991                       [anon:dalvik-Jit thread pool worker thread 0]
 706004b000-706010f000 r-xp 00000000 fc:00 2390                           /system/lib64/libvixl-arm64.so
 706010f000-7060120000 ---p 00000000 00:00 0 
 7060120000-7060125000 r--p 000cb000 fc:00 2390                           /system/lib64/libvixl-arm64.so
@@ -635,12 +635,12 @@
 7062003000-706201f000 ---p 00000000 00:00 0 
 706201f000-7062020000 r--p 0000f000 fc:00 2447                           /system/lib64/libtextclassifier_hash.so
 7062020000-7062021000 rw-p 00010000 fc:00 2447                           /system/lib64/libtextclassifier_hash.so
-7062022000-7062042000 rw-p 00000000 00:05 10269731                       /dev/ashmem/dalvik-CompilerMetadata (deleted)
+7062022000-7062042000 rw-p 00000000 00:05 10269731                       [anon:dalvik-CompilerMetadata]
 7062042000-7062077000 r-xp 00000000 fc:00 2372                           /system/lib64/android.hardware.neuralnetworks@1.0.so
 7062077000-7062095000 ---p 00000000 00:00 0 
 7062095000-706209b000 r--p 0003a000 fc:00 2372                           /system/lib64/android.hardware.neuralnetworks@1.0.so
 706209b000-706209c000 rw-p 00040000 fc:00 2372                           /system/lib64/android.hardware.neuralnetworks@1.0.so
-70620a9000-70620c9000 rw-p 00000000 00:05 10269730                       /dev/ashmem/dalvik-CompilerMetadata (deleted)
+70620a9000-70620c9000 rw-p 00000000 00:05 10269730                       [anon:dalvik-CompilerMetadata]
 70620c9000-70620e3000 r-xp 00000000 fc:00 2956                           /system/lib64/android.hardware.neuralnetworks@1.1.so
 70620e3000-70620f4000 ---p 00000000 00:00 0 
 70620f4000-70620f7000 r--p 0001d000 fc:00 2956                           /system/lib64/android.hardware.neuralnetworks@1.1.so
@@ -659,7 +659,7 @@
 70623e0000-70623f7000 ---p 00000000 00:00 0 
 70623f7000-70623f8000 r--p 0001f000 fc:00 2662                           /system/lib64/libGLESv3.so
 70623f8000-70623f9000 rw-p 00020000 fc:00 2662                           /system/lib64/libGLESv3.so
-70623fc000-706241c000 rw-p 00000000 00:05 10269729                       /dev/ashmem/dalvik-CompilerMetadata (deleted)
+70623fc000-706241c000 rw-p 00000000 00:05 10269729                       [anon:dalvik-CompilerMetadata]
 706241c000-7062444000 r-xp 00000000 fc:00 2603                           /system/lib64/libexif.so
 7062444000-706245f000 ---p 00000000 00:00 0 
 706245f000-7062472000 r--p 0002d000 fc:00 2603                           /system/lib64/libexif.so
@@ -674,7 +674,7 @@
 7062508000-7062522000 ---p 00000000 00:00 0 
 7062522000-7062525000 r--p 0003d000 fc:00 2401                           /system/lib64/libmtp.so
 7062525000-706252c000 rw-p 00040000 fc:00 2401                           /system/lib64/libmtp.so
-7062530000-7062550000 rw-p 00000000 00:05 10269728                       /dev/ashmem/dalvik-CompilerMetadata (deleted)
+7062530000-7062550000 rw-p 00000000 00:05 10269728                       [anon:dalvik-CompilerMetadata]
 7062550000-7062572000 r--s 00000000 fc:00 234                            /system/fonts/NotoSerifMyanmar-Regular.otf
 7062572000-706259e000 r-xp 00000000 fc:00 2620                           /system/lib64/libmediandk.so
 706259e000-70625b9000 ---p 00000000 00:00 0 
@@ -688,7 +688,7 @@
 7062621000-706263d000 ---p 00000000 00:00 0 
 706263d000-706263f000 r--p 0002e000 fc:00 2366                           /system/lib64/libmediadrmmetrics_lite.so
 706263f000-7062640000 rw-p 00030000 fc:00 2366                           /system/lib64/libmediadrmmetrics_lite.so
-706264b000-706266b000 rw-p 00000000 00:05 10269727                       /dev/ashmem/dalvik-CompilerMetadata (deleted)
+706264b000-706266b000 rw-p 00000000 00:05 10269727                       [anon:dalvik-CompilerMetadata]
 706266b000-70626d4000 r-xp 00000000 fc:00 2727                           /system/lib64/libmedia_jni.so
 70626d4000-70626eb000 ---p 00000000 00:00 0 
 70626eb000-70626f2000 r--p 00069000 fc:00 2727                           /system/lib64/libmedia_jni.so
@@ -697,7 +697,7 @@
 7062732000-7062748000 ---p 00000000 00:00 0 
 7062748000-706274b000 r--p 0003d000 fc:00 2399                           /system/lib64/libcamera2ndk.so
 706274b000-7062750000 rw-p 00040000 fc:00 2399                           /system/lib64/libcamera2ndk.so
-7062768000-7062788000 rw-p 00000000 00:05 10269726                       /dev/ashmem/dalvik-CompilerMetadata (deleted)
+7062768000-7062788000 rw-p 00000000 00:05 10269726                       [anon:dalvik-CompilerMetadata]
 7062788000-70627ee000 r-xp 00000000 fc:00 2974                           /system/lib64/android.hardware.drm@1.0.so
 70627ee000-7062805000 ---p 00000000 00:00 0 
 7062805000-706280d000 r--p 00068000 fc:00 2974                           /system/lib64/android.hardware.drm@1.0.so
@@ -737,17 +737,17 @@
 70629f9000-70629fc000 rw-p 00000000 00:00 0                              [anon:bionic TLS]
 70629fc000-70629fd000 ---p 00000000 00:00 0                              [anon:bionic TLS guard]
 70629fd000-7062a3e000 r--s 00000000 fc:00 216                            /system/fonts/NotoSerif-BoldItalic.ttf
-7062a3e000-7062b06000 rw-p 00000000 00:05 10270984                       /dev/ashmem/dalvik-indirect ref table (deleted)
-7062b06000-7062bce000 rw-p 00000000 00:05 10270983                       /dev/ashmem/dalvik-indirect ref table (deleted)
-7062bce000-7062dce000 rw-p 00000000 00:05 10270726                       /dev/ashmem/dalvik-rb copying gc mark stack (deleted)
-7062dce000-70635ce000 rw-p 00000000 00:05 10270725                       /dev/ashmem/dalvik-concurrent copying gc mark stack (deleted)
-70635ce000-7063dcf000 rw-p 00000000 00:05 10270724                       /dev/ashmem/dalvik-live stack (deleted)
-7063dcf000-70645d0000 rw-p 00000000 00:05 10270723                       /dev/ashmem/dalvik-allocation stack (deleted)
-70645d0000-70649d1000 rw-p 00000000 00:05 10270721                       /dev/ashmem/dalvik-card table (deleted)
-70649d1000-7064ad1000 rw-p 00000000 00:05 10267648                       /dev/ashmem/dalvik-large object free list space allocation info map (deleted)
-7064ad1000-7065ad1000 rw-p 00000000 00:05 10267644                       /dev/ashmem/dalvik-region space live bitmap (deleted)
-7065ad1000-7065bd1000 rw-p 00000000 00:05 10267642                       /dev/ashmem/dalvik-allocspace zygote / non moving space mark-bitmap 0 (deleted)
-7065bd1000-7065cd1000 rw-p 00000000 00:05 10267641                       /dev/ashmem/dalvik-allocspace zygote / non moving space live-bitmap 0 (deleted)
+7062a3e000-7062b06000 rw-p 00000000 00:05 10270984                       [anon:dalvik-indirect ref table]
+7062b06000-7062bce000 rw-p 00000000 00:05 10270983                       [anon:dalvik-indirect ref table]
+7062bce000-7062dce000 rw-p 00000000 00:05 10270726                       [anon:dalvik-rb copying gc mark stack]
+7062dce000-70635ce000 rw-p 00000000 00:05 10270725                       [anon:dalvik-concurrent copying gc mark stack]
+70635ce000-7063dcf000 rw-p 00000000 00:05 10270724                       [anon:dalvik-live stack]
+7063dcf000-70645d0000 rw-p 00000000 00:05 10270723                       [anon:dalvik-allocation stack]
+70645d0000-70649d1000 rw-p 00000000 00:05 10270721                       [anon:dalvik-card table]
+70649d1000-7064ad1000 rw-p 00000000 00:05 10267648                       [anon:dalvik-large object free list space allocation info map]
+7064ad1000-7065ad1000 rw-p 00000000 00:05 10267644                       [anon:dalvik-region space live bitmap]
+7065ad1000-7065bd1000 rw-p 00000000 00:05 10267642                       [anon:dalvik-allocspace zygote / non moving space mark-bitmap 0]
+7065bd1000-7065cd1000 rw-p 00000000 00:05 10267641                       [anon:dalvik-allocspace zygote / non moving space live-bitmap 0]
 7065cd1000-7065cd2000 r-xp 00000000 fc:00 2946                           /system/lib64/libsigchain.so
 7065cd2000-7065cf0000 ---p 00000000 00:00 0 
 7065cf0000-7065cf1000 r--p 0000f000 fc:00 2946                           /system/lib64/libsigchain.so
@@ -769,7 +769,7 @@
 706638d000-706639e000 r--p 005ef000 fc:00 2671                           /system/lib64/libart.so
 706639e000-70663a1000 rw-p 00600000 fc:00 2671                           /system/lib64/libart.so
 70663a1000-70663a4000 rw-p 00000000 00:00 0                              [anon:.bss]
-70663a6000-70663c6000 rw-p 00000000 00:05 10269725                       /dev/ashmem/dalvik-CompilerMetadata (deleted)
+70663a6000-70663c6000 rw-p 00000000 00:05 10269725                       [anon:dalvik-CompilerMetadata]
 70663c6000-70663c8000 r-xp 00000000 fc:00 2673                           /system/lib64/libmetricslogger.so
 70663c8000-70663e5000 ---p 00000000 00:00 0 
 70663e5000-70663e6000 r--p 0000f000 fc:00 2673                           /system/lib64/libmetricslogger.so
@@ -801,8 +801,8 @@
 70e688e000-70e68ab000 ---p 00000000 00:00 0 
 70e68ab000-70e68ac000 r--p 0000f000 fc:00 2943                           /system/lib64/libion.so
 70e68ac000-70e68ad000 rw-p 00010000 fc:00 2943                           /system/lib64/libion.so
-70e68ad000-70e68af000 rw-p 00000000 00:05 10282496                       /dev/ashmem/dalvik-indirect ref table (deleted)
-70e68af000-70e68b1000 rw-p 00000000 00:05 10282493                       /dev/ashmem/dalvik-indirect ref table (deleted)
+70e68ad000-70e68af000 rw-p 00000000 00:05 10282496                       [anon:dalvik-indirect ref table]
+70e68af000-70e68b1000 rw-p 00000000 00:05 10282493                       [anon:dalvik-indirect ref table]
 70e68b1000-70e68ee000 r--s 00000000 fc:00 256                            /system/fonts/NotoSerif-Italic.ttf
 70e68ee000-70e6910000 r-xp 00000000 fc:00 2502                           /system/lib64/libhidlbase.so
 70e6910000-70e692c000 ---p 00000000 00:00 0 
@@ -821,7 +821,7 @@
 70e69e1000-70e69fa000 ---p 00000000 00:00 0 
 70e69fa000-70e69fb000 r--p 0001f000 fc:00 2537                           /system/lib64/liblog.so
 70e69fb000-70e69fc000 rw-p 00020000 fc:00 2537                           /system/lib64/liblog.so
-70e69fc000-70e69fe000 rw-p 00000000 00:05 10266158                       /dev/ashmem/dalvik-indirect ref table (deleted)
+70e69fc000-70e69fe000 rw-p 00000000 00:05 10266158                       [anon:dalvik-indirect ref table]
 70e69fe000-70e69ff000 ---p 00000000 00:00 0                              [anon:bionic TLS guard]
 70e69ff000-70e6a02000 rw-p 00000000 00:00 0                              [anon:bionic TLS]
 70e6a02000-70e6a03000 ---p 00000000 00:00 0                              [anon:bionic TLS guard]
@@ -854,7 +854,7 @@
 70e6b61000-70e6b73000 ---p 00000000 00:00 0 
 70e6b73000-70e6b75000 r--p 0003e000 fc:00 2695                           /system/lib64/libdexfile.so
 70e6b75000-70e6b76000 rw-p 00040000 fc:00 2695                           /system/lib64/libdexfile.so
-70e6b76000-70e6b78000 rw-p 00000000 00:05 10253452                       /dev/ashmem/dalvik-indirect ref table (deleted)
+70e6b76000-70e6b78000 rw-p 00000000 00:05 10253452                       [anon:dalvik-indirect ref table]
 70e6b78000-70e6b85000 r--s 00000000 fc:00 1080                           /system/usr/hyphen-data/hyph-cu.hyb
 70e6b85000-70e6b96000 r-xp 00000000 fc:00 2957                           /system/lib64/libaudioutils.so
 70e6b96000-70e6bb4000 ---p 00000000 00:00 0 
@@ -1258,7 +1258,7 @@
 70e96dd000-70e96f8000 ---p 00000000 00:00 0 
 70e96f8000-70e96f9000 r--p 0000f000 fc:00 2386                           /system/lib64/libusbhost.so
 70e96f9000-70e96fa000 rw-p 00010000 fc:00 2386                           /system/lib64/libusbhost.so
-70e96fa000-70e96fb000 r--p 00000000 00:05 10266154                       /dev/ashmem/dalvik-classes.dex extracted in memory from /data/app/com.google.sample.tunnel-HGGRU03Gu1Mwkf_-RnFmvw==/base.apk (deleted)
+70e96fa000-70e96fb000 r--p 00000000 00:05 10266154                       [anon:dalvik-classes.dex extracted in memory from /data/app/com.google.sample.tunnel-HGGRU03Gu1Mwkf_-RnFmvw==/base.apk]
 70e96fb000-70e9701000 r--s 00000000 fc:00 280                            /system/fonts/NotoSansCoptic-Regular.ttf
 70e9701000-70e9720000 r-xp 00000000 fc:00 2490                           /system/lib64/libstagefright_bufferqueue_helper.so
 70e9720000-70e973b000 ---p 00000000 00:00 0 
@@ -1291,7 +1291,7 @@
 70e98e7000-70e98e8000 rw-p 00010000 fc:00 2952                           /system/lib64/libETC1.so
 70e98e8000-70e98e9000 r--s 00000000 fc:00 1121                           /system/usr/hyphen-data/hyph-und-ethi.hyb
 70e98e9000-70e98ef000 r--s 00000000 fc:00 64                             /system/fonts/NotoSansBrahmi-Regular.ttf
-70e98ef000-70e990f000 rw-p 00000000 00:05 10271012                       /dev/ashmem/dalvik-CompilerMetadata (deleted)
+70e98ef000-70e990f000 rw-p 00000000 00:05 10271012                       [anon:dalvik-CompilerMetadata]
 70e990f000-70e9926000 r-xp 00000000 fc:00 2526                           /system/lib64/libbacktrace.so
 70e9926000-70e993e000 ---p 00000000 00:00 0 
 70e993e000-70e993f000 r--p 0001f000 fc:00 2526                           /system/lib64/libbacktrace.so
@@ -1304,7 +1304,7 @@
 70e99d0000-70e99d1000 r--p 00000000 00:00 0                              [anon:linker_alloc]
 70e99d1000-70e99d3000 r--s 00000000 fc:00 200                            /system/fonts/NotoSansOldItalic-Regular.ttf
 70e99d3000-70e99e1000 r--s 00000000 fc:00 153                            /system/fonts/NotoSansMalayalam-Regular.ttf
-70e99e1000-70e9a01000 rw-p 00000000 00:05 10271011                       /dev/ashmem/dalvik-CompilerMetadata (deleted)
+70e99e1000-70e9a01000 rw-p 00000000 00:05 10271011                       [anon:dalvik-CompilerMetadata]
 70e9a01000-70e9a1e000 r-xp 00000000 fc:00 2542                           /system/lib64/libimg_utils.so
 70e9a1e000-70e9a39000 ---p 00000000 00:00 0 
 70e9a39000-70e9a3c000 r--p 0001d000 fc:00 2542                           /system/lib64/libimg_utils.so
@@ -1330,7 +1330,7 @@
 70e9b0b000-70e9b0c000 rw-p 00030000 fc:00 2950                           /system/lib64/libmemunreachable.so
 70e9b0c000-70e9b0d000 r--s 00000000 fc:00 1088                           /system/usr/hyphen-data/hyph-ta.hyb
 70e9b0d000-70e9b0f000 r--s 00000000 fc:00 72                             /system/fonts/NotoSansOlChiki-Regular.ttf
-70e9b0f000-70e9b2f000 rw-p 00000000 00:05 10271010                       /dev/ashmem/dalvik-CompilerMetadata (deleted)
+70e9b0f000-70e9b2f000 rw-p 00000000 00:05 10271010                       [anon:dalvik-CompilerMetadata]
 70e9b2f000-70e9b4f000 r--s 00000000 00:10 16633                          /dev/__properties__/u:object_r:persist_debug_prop:s0
 70e9b4f000-70e9b65000 r-xp 00000000 fc:00 2920                           /system/lib64/android.hardware.cas.native@1.0.so
 70e9b65000-70e9b7b000 ---p 00000000 00:00 0 
@@ -1363,13 +1363,13 @@
 70e9d01000-70e9d1e000 ---p 00000000 00:00 0 
 70e9d1e000-70e9d2e000 r--p 00080000 fc:00 2665                           /system/lib64/libbinder.so
 70e9d2e000-70e9d2f000 rw-p 00090000 fc:00 2665                           /system/lib64/libbinder.so
-70e9d2f000-70e9d4f000 rw-p 00000000 00:05 10271009                       /dev/ashmem/dalvik-CompilerMetadata (deleted)
+70e9d2f000-70e9d4f000 rw-p 00000000 00:05 10271009                       [anon:dalvik-CompilerMetadata]
 70e9d4f000-70e9d53000 r-xp 00000000 fc:00 2454                           /system/lib64/libaudiomanager.so
 70e9d53000-70e9d6e000 ---p 00000000 00:00 0 
 70e9d6e000-70e9d6f000 r--p 0000f000 fc:00 2454                           /system/lib64/libaudiomanager.so
 70e9d6f000-70e9d70000 rw-p 00010000 fc:00 2454                           /system/lib64/libaudiomanager.so
 70e9d70000-70e9d71000 r--s 00000000 fc:00 1087                           /system/usr/hyphen-data/hyph-or.hyb
-70e9d71000-70e9d91000 rw-p 00000000 00:05 10271008                       /dev/ashmem/dalvik-CompilerMetadata (deleted)
+70e9d71000-70e9d91000 rw-p 00000000 00:05 10271008                       [anon:dalvik-CompilerMetadata]
 70e9d91000-70e9e21000 r-xp 00000000 fc:00 2627                           /system/lib64/libft2.so
 70e9e21000-70e9e37000 ---p 00000000 00:00 0 
 70e9e37000-70e9e3c000 r--p 0009b000 fc:00 2627                           /system/lib64/libft2.so
@@ -1437,15 +1437,15 @@
 70eaa12000-70eaa16000 r--s 00000000 fc:00 87                             /system/fonts/NotoSansThaana-Regular.ttf
 70eaa16000-70eaa1b000 r--s 00000000 fc:00 218                            /system/fonts/NotoSansGeorgian-Bold.ttf
 70eaa1b000-70eaa20000 r--s 00000000 fc:00 125                            /system/fonts/NotoSansGeorgian-Regular.ttf
-70eaa20000-70eaa40000 rw-p 00000000 00:05 10271007                       /dev/ashmem/dalvik-CompilerMetadata (deleted)
+70eaa20000-70eaa40000 rw-p 00000000 00:05 10271007                       [anon:dalvik-CompilerMetadata]
 70eaa40000-70eaaa0000 r-xp 00000000 fc:00 2384                           /system/lib64/libhidltransport.so
 70eaaa0000-70eaabe000 ---p 00000000 00:00 0 
 70eaabe000-70eaac6000 r--p 00068000 fc:00 2384                           /system/lib64/libhidltransport.so
 70eaac6000-70eaac7000 rw-p 00070000 fc:00 2384                           /system/lib64/libhidltransport.so
 70eaac7000-70eaacb000 r--s 00000000 fc:00 192                            /system/fonts/NotoSerifArmenian-Bold.ttf
 70eaacb000-70eaad0000 r--s 00000000 fc:00 210                            /system/fonts/NotoSansThaiUI-Bold.ttf
-70eaad0000-70eaaf0000 rw-p 00000000 00:05 10271006                       /dev/ashmem/dalvik-CompilerMetadata (deleted)
-70eaaf0000-70eab10000 rw-p 00000000 00:05 10271005                       /dev/ashmem/dalvik-CompilerMetadata (deleted)
+70eaad0000-70eaaf0000 rw-p 00000000 00:05 10271006                       [anon:dalvik-CompilerMetadata]
+70eaaf0000-70eab10000 rw-p 00000000 00:05 10271005                       [anon:dalvik-CompilerMetadata]
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@@ -1453,7 +1453,7 @@
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@@ -1468,7 +1468,7 @@
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@@ -1503,7 +1503,7 @@
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@@ -1579,395 +1579,395 @@
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 70eb927000-70eb929000 r--s 00000000 fc:00 203                            /system/fonts/NotoSansBuhid-Regular.ttf
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-70ebc46000-70ebc4a000 rw-p 00000000 00:05 10270748                       /dev/ashmem/dalvik-thread local mark stack (deleted)
-70ebc4a000-70ebc4e000 rw-p 00000000 00:05 10270747                       /dev/ashmem/dalvik-thread local mark stack (deleted)
+70ebc40000-70ebc42000 rw-p 00000000 00:05 10269719                       [anon:dalvik-indirect ref table]
+70ebc42000-70ebc46000 rw-p 00000000 00:05 10270749                       [anon:dalvik-thread local mark stack]
+70ebc46000-70ebc4a000 rw-p 00000000 00:05 10270748                       [anon:dalvik-thread local mark stack]
+70ebc4a000-70ebc4e000 rw-p 00000000 00:05 10270747                       [anon:dalvik-thread local mark stack]
 70ebc4e000-70ebc4f000 rw-p 00000000 00:00 0                              [anon:linker_alloc]
-70ebc4f000-70ebc51000 rw-p 00000000 00:05 10269718                       /dev/ashmem/dalvik-indirect ref table (deleted)
-70ebc51000-70ebc55000 rw-p 00000000 00:05 10270746                       /dev/ashmem/dalvik-thread local mark stack (deleted)
-70ebc55000-70ebc59000 rw-p 00000000 00:05 10270745                       /dev/ashmem/dalvik-thread local mark stack (deleted)
-70ebc59000-70ebc5d000 rw-p 00000000 00:05 10270744                       /dev/ashmem/dalvik-thread local mark stack (deleted)
+70ebc4f000-70ebc51000 rw-p 00000000 00:05 10269718                       [anon:dalvik-indirect ref table]
+70ebc51000-70ebc55000 rw-p 00000000 00:05 10270746                       [anon:dalvik-thread local mark stack]
+70ebc55000-70ebc59000 rw-p 00000000 00:05 10270745                       [anon:dalvik-thread local mark stack]
+70ebc59000-70ebc5d000 rw-p 00000000 00:05 10270744                       [anon:dalvik-thread local mark stack]
 70ebc5d000-70ebc7d000 r--s 00000000 00:10 16599                          /dev/__properties__/u:object_r:exported_dalvik_prop:s0
 70ebc7d000-70ebc7e000 rw-p 00000000 00:00 0                              [anon:linker_alloc]
 70ebc7e000-70ebc7f000 r--p 00000000 00:00 0                              [anon:linker_alloc]
 70ebc7f000-70ebc80000 r--s 00004000 fc:00 963                            /system/framework/core-libart.jar
 70ebc80000-70ebc81000 r--p 00000000 00:00 0                              [anon:linker_alloc]
-70ebc81000-70ebc85000 rw-p 00000000 00:05 10270743                       /dev/ashmem/dalvik-thread local mark stack (deleted)
-70ebc85000-70ebc89000 rw-p 00000000 00:05 10270742                       /dev/ashmem/dalvik-thread local mark stack (deleted)
+70ebc81000-70ebc85000 rw-p 00000000 00:05 10270743                       [anon:dalvik-thread local mark stack]
+70ebc85000-70ebc89000 rw-p 00000000 00:05 10270742                       [anon:dalvik-thread local mark stack]
 70ebc89000-70ebc8a000 rw-p 00000000 00:00 0                              [anon:linker_alloc_small_objects]
 70ebc8a000-70ebc8c000 r--p 00000000 00:00 0                              [anon:linker_alloc]
 70ebc8c000-70ebc8d000 r--s 0001e000 fc:00 699                            /system/framework/core-oj.jar
-70ebc8d000-70ebc91000 rw-p 00000000 00:05 10270741                       /dev/ashmem/dalvik-thread local mark stack (deleted)
-70ebc91000-70ebc95000 rw-p 00000000 00:05 10270740                       /dev/ashmem/dalvik-thread local mark stack (deleted)
-70ebc95000-70ebc99000 rw-p 00000000 00:05 10270739                       /dev/ashmem/dalvik-thread local mark stack (deleted)
+70ebc8d000-70ebc91000 rw-p 00000000 00:05 10270741                       [anon:dalvik-thread local mark stack]
+70ebc91000-70ebc95000 rw-p 00000000 00:05 10270740                       [anon:dalvik-thread local mark stack]
+70ebc95000-70ebc99000 rw-p 00000000 00:05 10270739                       [anon:dalvik-thread local mark stack]
 70ebc99000-70ebc9b000 r--p 00000000 00:00 0                              [anon:linker_alloc]
 70ebc9b000-70ebc9c000 rw-p 00000000 00:00 0                              [anon:linker_alloc]
-70ebc9c000-70ebca0000 rw-p 00000000 00:05 10270738                       /dev/ashmem/dalvik-thread local mark stack (deleted)
-70ebca0000-70ebca4000 rw-p 00000000 00:05 10270737                       /dev/ashmem/dalvik-thread local mark stack (deleted)
-70ebca4000-70ebca8000 rw-p 00000000 00:05 10270736                       /dev/ashmem/dalvik-thread local mark stack (deleted)
-70ebca8000-70ebcac000 rw-p 00000000 00:05 10270735                       /dev/ashmem/dalvik-thread local mark stack (deleted)
-70ebcac000-70ebcb0000 rw-p 00000000 00:05 10270734                       /dev/ashmem/dalvik-thread local mark stack (deleted)
+70ebc9c000-70ebca0000 rw-p 00000000 00:05 10270738                       [anon:dalvik-thread local mark stack]
+70ebca0000-70ebca4000 rw-p 00000000 00:05 10270737                       [anon:dalvik-thread local mark stack]
+70ebca4000-70ebca8000 rw-p 00000000 00:05 10270736                       [anon:dalvik-thread local mark stack]
+70ebca8000-70ebcac000 rw-p 00000000 00:05 10270735                       [anon:dalvik-thread local mark stack]
+70ebcac000-70ebcb0000 rw-p 00000000 00:05 10270734                       [anon:dalvik-thread local mark stack]
 70ebcb0000-70ebcd0000 r--s 00000000 00:10 16592                          /dev/__properties__/u:object_r:exported2_system_prop:s0
 70ebcd0000-70ebcd1000 rw-p 00000000 00:00 0                              [anon:linker_alloc]
-70ebcd1000-70ebcd5000 rw-p 00000000 00:05 10270733                       /dev/ashmem/dalvik-thread local mark stack (deleted)
-70ebcd5000-70ebcd9000 rw-p 00000000 00:05 10270732                       /dev/ashmem/dalvik-thread local mark stack (deleted)
-70ebcd9000-70ebcdd000 rw-p 00000000 00:05 10270731                       /dev/ashmem/dalvik-thread local mark stack (deleted)
-70ebcdd000-70ebce1000 rw-p 00000000 00:05 10270730                       /dev/ashmem/dalvik-thread local mark stack (deleted)
-70ebce1000-70ebce5000 rw-p 00000000 00:05 10270729                       /dev/ashmem/dalvik-thread local mark stack (deleted)
-70ebce5000-70ebce9000 rw-p 00000000 00:05 10270728                       /dev/ashmem/dalvik-thread local mark stack (deleted)
+70ebcd1000-70ebcd5000 rw-p 00000000 00:05 10270733                       [anon:dalvik-thread local mark stack]
+70ebcd5000-70ebcd9000 rw-p 00000000 00:05 10270732                       [anon:dalvik-thread local mark stack]
+70ebcd9000-70ebcdd000 rw-p 00000000 00:05 10270731                       [anon:dalvik-thread local mark stack]
+70ebcdd000-70ebce1000 rw-p 00000000 00:05 10270730                       [anon:dalvik-thread local mark stack]
+70ebce1000-70ebce5000 rw-p 00000000 00:05 10270729                       [anon:dalvik-thread local mark stack]
+70ebce5000-70ebce9000 rw-p 00000000 00:05 10270728                       [anon:dalvik-thread local mark stack]
 70ebce9000-70ebcea000 r--p 00000000 00:00 0                              [anon:linker_alloc]
-70ebcea000-70ebcec000 rw-p 00000000 00:05 10270987                       /dev/ashmem/dalvik-indirect ref table (deleted)
+70ebcea000-70ebcec000 rw-p 00000000 00:05 10270987                       [anon:dalvik-indirect ref table]
 70ebcec000-70ebcf9000 r--p 00646000 103:1d 639532                        /data/dalvik-cache/arm64/system@framework@boot-framework.art
 70ebcf9000-70ebd19000 r--s 00000000 00:10 16620                          /dev/__properties__/u:object_r:log_tag_prop:s0
 70ebd19000-70ebd39000 r--s 00000000 00:10 16621                          /dev/__properties__/u:object_r:logd_prop:s0
 70ebd39000-70ebd3a000 rw-p 00000000 00:00 0                              [anon:linker_alloc]
 70ebd3a000-70ebd3b000 r--p 00000000 00:00 0                              [anon:linker_alloc]
-70ebd3b000-70ebd3f000 rw-p 00000000 00:05 10270727                       /dev/ashmem/dalvik-thread local mark stack (deleted)
+70ebd3b000-70ebd3f000 rw-p 00000000 00:05 10270727                       [anon:dalvik-thread local mark stack]
 70ebd3f000-70ebd40000 r--p 00002000 103:1d 639556                        /data/dalvik-cache/arm64/system@framework@boot-com.google.vr.platform.art
 70ebd40000-70ebd41000 r--p 00005000 103:1d 639553                        /data/dalvik-cache/arm64/system@framework@boot-android.test.base.art
 70ebd41000-70ebd42000 r--p 00000000 00:00 0                              [anon:linker_alloc]
diff --git a/libsysutils/include/sysutils/FrameworkCommand.h b/libsysutils/include/sysutils/FrameworkCommand.h
index 3e6264b..db17ba7 100644
--- a/libsysutils/include/sysutils/FrameworkCommand.h
+++ b/libsysutils/include/sysutils/FrameworkCommand.h
@@ -16,8 +16,6 @@
 #ifndef __FRAMEWORK_CMD_HANDLER_H
 #define __FRAMEWORK_CMD_HANDLER_H
 
-#include "List.h"
-
 class SocketClient;
 
 class FrameworkCommand { 
@@ -31,8 +29,7 @@
 
     virtual int runCommand(SocketClient *c, int argc, char **argv) = 0;
 
-    const char *getCommand() { return mCommand; }
+    const char* getCommand() const { return mCommand; }
 };
 
-typedef android::sysutils::List<FrameworkCommand *> FrameworkCommandCollection;
 #endif
diff --git a/libsysutils/include/sysutils/FrameworkListener.h b/libsysutils/include/sysutils/FrameworkListener.h
index d9a561a..93d99c4 100644
--- a/libsysutils/include/sysutils/FrameworkListener.h
+++ b/libsysutils/include/sysutils/FrameworkListener.h
@@ -17,8 +17,10 @@
 #define _FRAMEWORKSOCKETLISTENER_H
 
 #include "SocketListener.h"
-#include "FrameworkCommand.h"
 
+#include <vector>
+
+class FrameworkCommand;
 class SocketClient;
 
 class FrameworkListener : public SocketListener {
@@ -31,7 +33,7 @@
 private:
     int mCommandCount;
     bool mWithSeq;
-    FrameworkCommandCollection *mCommands;
+    std::vector<FrameworkCommand*> mCommands;
     bool mSkipToNextNullByte;
 
 public:
diff --git a/libsysutils/include/sysutils/List.h b/libsysutils/include/sysutils/List.h
deleted file mode 100644
index 31f7b37..0000000
--- a/libsysutils/include/sysutils/List.h
+++ /dev/null
@@ -1,334 +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.
- */
-
-//
-// Templated list class.  Normally we'd use STL, but we don't have that.
-// This class mimics STL's interfaces.
-//
-// Objects are copied into the list with the '=' operator or with copy-
-// construction, so if the compiler's auto-generated versions won't work for
-// you, define your own.
-//
-// The only class you want to use from here is "List".
-//
-#ifndef _SYSUTILS_LIST_H
-#define _SYSUTILS_LIST_H
-
-#include <stddef.h>
-#include <stdint.h>
-
-namespace android {
-namespace sysutils {
-
-/*
- * Doubly-linked list.  Instantiate with "List<MyClass> myList".
- *
- * Objects added to the list are copied using the assignment operator,
- * so this must be defined.
- */
-template<typename T> 
-class List 
-{
-protected:
-    /*
-     * One element in the list.
-     */
-    class _Node {
-    public:
-        explicit _Node(const T& val) : mVal(val) {}
-        ~_Node() {}
-        inline T& getRef() { return mVal; }
-        inline const T& getRef() const { return mVal; }
-        inline _Node* getPrev() const { return mpPrev; }
-        inline _Node* getNext() const { return mpNext; }
-        inline void setVal(const T& val) { mVal = val; }
-        inline void setPrev(_Node* ptr) { mpPrev = ptr; }
-        inline void setNext(_Node* ptr) { mpNext = ptr; }
-    private:
-        friend class List;
-        friend class _ListIterator;
-        T           mVal;
-        _Node*      mpPrev;
-        _Node*      mpNext;
-    };
-
-    /*
-     * Iterator for walking through the list.
-     */
-    
-    template <typename TYPE>
-    struct CONST_ITERATOR {
-        typedef _Node const * NodePtr;
-        typedef const TYPE Type;
-    };
-    
-    template <typename TYPE>
-    struct NON_CONST_ITERATOR {
-        typedef _Node* NodePtr;
-        typedef TYPE Type;
-    };
-    
-    template<
-        typename U,
-        template <class> class Constness
-    > 
-    class _ListIterator {
-        typedef _ListIterator<U, Constness>     _Iter;
-        typedef typename Constness<U>::NodePtr  _NodePtr;
-        typedef typename Constness<U>::Type     _Type;
-
-        explicit _ListIterator(_NodePtr ptr) : mpNode(ptr) {}
-
-    public:
-        _ListIterator() {}
-        _ListIterator(const _Iter& rhs) : mpNode(rhs.mpNode) {}
-        ~_ListIterator() {}
-        
-        // this will handle conversions from iterator to const_iterator
-        // (and also all convertible iterators)
-        // Here, in this implementation, the iterators can be converted
-        // if the nodes can be converted
-        template<typename V> explicit 
-        _ListIterator(const V& rhs) : mpNode(rhs.mpNode) {}
-        
-
-        /*
-         * Dereference operator.  Used to get at the juicy insides.
-         */
-        _Type& operator*() const { return mpNode->getRef(); }
-        _Type* operator->() const { return &(mpNode->getRef()); }
-
-        /*
-         * Iterator comparison.
-         */
-        inline bool operator==(const _Iter& right) const { 
-            return mpNode == right.mpNode; }
-        
-        inline bool operator!=(const _Iter& right) const { 
-            return mpNode != right.mpNode; }
-
-        /*
-         * handle comparisons between iterator and const_iterator
-         */
-        template<typename OTHER>
-        inline bool operator==(const OTHER& right) const { 
-            return mpNode == right.mpNode; }
-        
-        template<typename OTHER>
-        inline bool operator!=(const OTHER& right) const { 
-            return mpNode != right.mpNode; }
-
-        /*
-         * Incr/decr, used to move through the list.
-         */
-        inline _Iter& operator++() {     // pre-increment
-            mpNode = mpNode->getNext();
-            return *this;
-        }
-        const _Iter operator++(int) {    // post-increment
-            _Iter tmp(*this);
-            mpNode = mpNode->getNext();
-            return tmp;
-        }
-        inline _Iter& operator--() {     // pre-increment
-            mpNode = mpNode->getPrev();
-            return *this;
-        }
-        const _Iter operator--(int) {   // post-increment
-            _Iter tmp(*this);
-            mpNode = mpNode->getPrev();
-            return tmp;
-        }
-
-        inline _NodePtr getNode() const { return mpNode; }
-
-        _NodePtr mpNode;    /* should be private, but older gcc fails */
-    private:
-        friend class List;
-    };
-
-public:
-    List() {
-        prep();
-    }
-    List(const List<T>& src) {      // copy-constructor
-        prep();
-        insert(begin(), src.begin(), src.end());
-    }
-    virtual ~List() {
-        clear();
-        delete[] (unsigned char*) mpMiddle;
-    }
-
-    typedef _ListIterator<T, NON_CONST_ITERATOR> iterator;
-    typedef _ListIterator<T, CONST_ITERATOR> const_iterator;
-
-    List<T>& operator=(const List<T>& right);
-
-    /* returns true if the list is empty */
-    inline bool empty() const { return mpMiddle->getNext() == mpMiddle; }
-
-    /* return #of elements in list */
-    size_t size() const {
-        return size_t(distance(begin(), end()));
-    }
-
-    /*
-     * Return the first element or one past the last element.  The
-     * _Node* we're returning is converted to an "iterator" by a
-     * constructor in _ListIterator.
-     */
-    inline iterator begin() { 
-        return iterator(mpMiddle->getNext()); 
-    }
-    inline const_iterator begin() const { 
-        return const_iterator(const_cast<_Node const*>(mpMiddle->getNext())); 
-    }
-    inline iterator end() { 
-        return iterator(mpMiddle); 
-    }
-    inline const_iterator end() const { 
-        return const_iterator(const_cast<_Node const*>(mpMiddle)); 
-    }
-
-    /* add the object to the head or tail of the list */
-    void push_front(const T& val) { insert(begin(), val); }
-    void push_back(const T& val) { insert(end(), val); }
-
-    /* insert before the current node; returns iterator at new node */
-    iterator insert(iterator posn, const T& val) 
-    {
-        _Node* newNode = new _Node(val);        // alloc & copy-construct
-        newNode->setNext(posn.getNode());
-        newNode->setPrev(posn.getNode()->getPrev());
-        posn.getNode()->getPrev()->setNext(newNode);
-        posn.getNode()->setPrev(newNode);
-        return iterator(newNode);
-    }
-
-    /* insert a range of elements before the current node */
-    void insert(iterator posn, const_iterator first, const_iterator last) {
-        for ( ; first != last; ++first)
-            insert(posn, *first);
-    }
-
-    /* remove one entry; returns iterator at next node */
-    iterator erase(iterator posn) {
-        _Node* pNext = posn.getNode()->getNext();
-        _Node* pPrev = posn.getNode()->getPrev();
-        pPrev->setNext(pNext);
-        pNext->setPrev(pPrev);
-        delete posn.getNode();
-        return iterator(pNext);
-    }
-
-    /* remove a range of elements */
-    iterator erase(iterator first, iterator last) {
-        while (first != last)
-            erase(first++);     // don't erase than incr later!
-        return iterator(last);
-    }
-
-    /* remove all contents of the list */
-    void clear() {
-        _Node* pCurrent = mpMiddle->getNext();
-        _Node* pNext;
-
-        while (pCurrent != mpMiddle) {
-            pNext = pCurrent->getNext();
-            delete pCurrent;
-            pCurrent = pNext;
-        }
-        mpMiddle->setPrev(mpMiddle);
-        mpMiddle->setNext(mpMiddle);
-    }
-
-    /*
-     * Measure the distance between two iterators.  On exist, "first"
-     * will be equal to "last".  The iterators must refer to the same
-     * list.
-     *
-     * FIXME: This is actually a generic iterator function. It should be a 
-     * template function at the top-level with specializations for things like
-     * vector<>, which can just do pointer math). Here we limit it to
-     * _ListIterator of the same type but different constness.
-     */
-    template<
-        typename U,
-        template <class> class CL,
-        template <class> class CR
-    > 
-    ptrdiff_t distance(
-            _ListIterator<U, CL> first, _ListIterator<U, CR> last) const 
-    {
-        ptrdiff_t count = 0;
-        while (first != last) {
-            ++first;
-            ++count;
-        }
-        return count;
-    }
-
-private:
-    /*
-     * I want a _Node but don't need it to hold valid data.  More
-     * to the point, I don't want T's constructor to fire, since it
-     * might have side-effects or require arguments.  So, we do this
-     * slightly uncouth storage alloc.
-     */
-    void prep() {
-        mpMiddle = (_Node*) new unsigned char[sizeof(_Node)];
-        mpMiddle->setPrev(mpMiddle);
-        mpMiddle->setNext(mpMiddle);
-    }
-
-    /*
-     * This node plays the role of "pointer to head" and "pointer to tail".
-     * It sits in the middle of a circular list of nodes.  The iterator
-     * runs around the circle until it encounters this one.
-     */
-    _Node*      mpMiddle;
-};
-
-/*
- * Assignment operator.
- *
- * The simplest way to do this would be to clear out the target list and
- * fill it with the source.  However, we can speed things along by
- * re-using existing elements.
- */
-template<class T>
-List<T>& List<T>::operator=(const List<T>& right)
-{
-    if (this == &right)
-        return *this;       // self-assignment
-    iterator firstDst = begin();
-    iterator lastDst = end();
-    const_iterator firstSrc = right.begin();
-    const_iterator lastSrc = right.end();
-    while (firstSrc != lastSrc && firstDst != lastDst)
-        *firstDst++ = *firstSrc++;
-    if (firstSrc == lastSrc)        // ran out of elements in source?
-        erase(firstDst, lastDst);   // yes, erase any extras
-    else
-        insert(lastDst, firstSrc, lastSrc);     // copy remaining over
-    return *this;
-}
-
-}; // namespace sysutils
-}; // namespace android
-
-#endif // _SYSUTILS_LIST_H
diff --git a/libsysutils/include/sysutils/OWNERS b/libsysutils/include/sysutils/OWNERS
index b78918e..645baf4 100644
--- a/libsysutils/include/sysutils/OWNERS
+++ b/libsysutils/include/sysutils/OWNERS
@@ -1,2 +1 @@
-per-file Netlink* = ek@google.com
-per-file Netlink* = lorenzo@google.com
+per-file OWNERS,Netlink* = ek@google.com,lorenzo@google.com
diff --git a/libsysutils/src/FrameworkListener.cpp b/libsysutils/src/FrameworkListener.cpp
index 835e226..b07853a 100644
--- a/libsysutils/src/FrameworkListener.cpp
+++ b/libsysutils/src/FrameworkListener.cpp
@@ -28,8 +28,6 @@
 
 static const int CMD_BUF_SIZE = 1024;
 
-#define UNUSED __attribute__((unused))
-
 FrameworkListener::FrameworkListener(const char *socketName, bool withSeq) :
                             SocketListener(socketName, true, withSeq) {
     init(socketName, withSeq);
@@ -45,8 +43,7 @@
     init(nullptr, false);
 }
 
-void FrameworkListener::init(const char *socketName UNUSED, bool withSeq) {
-    mCommands = new FrameworkCommandCollection();
+void FrameworkListener::init(const char* /*socketName*/, bool withSeq) {
     errorRate = 0;
     mCommandCount = 0;
     mWithSeq = withSeq;
@@ -91,11 +88,10 @@
 }
 
 void FrameworkListener::registerCmd(FrameworkCommand *cmd) {
-    mCommands->push_back(cmd);
+    mCommands.push_back(cmd);
 }
 
 void FrameworkListener::dispatchCommand(SocketClient *cli, char *data) {
-    FrameworkCommandCollection::iterator i;
     int argc = 0;
     char *argv[FrameworkListener::CMD_ARGS_MAX];
     char tmp[CMD_BUF_SIZE];
@@ -193,9 +189,7 @@
         goto out;
     }
 
-    for (i = mCommands->begin(); i != mCommands->end(); ++i) {
-        FrameworkCommand *c = *i;
-
+    for (auto* c : mCommands) {
         if (!strcmp(argv[0], c->getCommand())) {
             if (c->runCommand(cli, argc, argv)) {
                 SLOGW("Handler '%s' error (%s)", c->getCommand(), strerror(errno));
diff --git a/libsysutils/src/OWNERS b/libsysutils/src/OWNERS
index b78918e..645baf4 100644
--- a/libsysutils/src/OWNERS
+++ b/libsysutils/src/OWNERS
@@ -1,2 +1 @@
-per-file Netlink* = ek@google.com
-per-file Netlink* = lorenzo@google.com
+per-file OWNERS,Netlink* = ek@google.com,lorenzo@google.com
diff --git a/libsysutils/src/SocketClient.cpp b/libsysutils/src/SocketClient.cpp
index 0625db7..fe2f3d6 100644
--- a/libsysutils/src/SocketClient.cpp
+++ b/libsysutils/src/SocketClient.cpp
@@ -27,6 +27,8 @@
 #include <sys/types.h>
 #include <unistd.h>
 
+#include <android-base/file.h>
+#include <android-base/macros.h>
 #include <log/log.h>
 #include <sysutils/SocketClient.h>
 
@@ -145,7 +147,8 @@
         switch (*arg) {
         case '\\':
         case '"':
-            *(current++) = '\\'; // fallthrough
+            *(current++) = '\\';
+            FALLTHROUGH_INTENDED;
         default:
             *(current++) = *(arg++);
         }
diff --git a/libsysutils/src/SocketListener_test.cpp b/libsysutils/src/SocketListener_test.cpp
index fed4546..d6bfd02 100644
--- a/libsysutils/src/SocketListener_test.cpp
+++ b/libsysutils/src/SocketListener_test.cpp
@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 
+#include <sysutils/FrameworkCommand.h>
 #include <sysutils/FrameworkListener.h>
 
 #include <poll.h>
diff --git a/libunwindstack/DwarfCfa.cpp b/libunwindstack/DwarfCfa.cpp
index cd9ef61..0fa1638 100644
--- a/libunwindstack/DwarfCfa.cpp
+++ b/libunwindstack/DwarfCfa.cpp
@@ -21,6 +21,7 @@
 #include <type_traits>
 #include <vector>
 
+#include <android-base/macros.h>
 #include <android-base/stringprintf.h>
 
 #include <unwindstack/DwarfError.h>
@@ -154,13 +155,15 @@
       break;
     case DwarfCfaInfo::DWARF_DISPLAY_ADVANCE_LOC:
       *cur_pc += value;
-    // Fall through to log the value.
+      FALLTHROUGH_INTENDED;
+      // Fall through to log the value.
     case DwarfCfaInfo::DWARF_DISPLAY_NUMBER:
       string += " " + std::to_string(value);
       break;
     case DwarfCfaInfo::DWARF_DISPLAY_SET_LOC:
       *cur_pc = value;
-    // Fall through to log the value.
+      FALLTHROUGH_INTENDED;
+      // Fall through to log the value.
     case DwarfCfaInfo::DWARF_DISPLAY_ADDRESS:
       if (std::is_same<AddressType, uint32_t>::value) {
         string += android::base::StringPrintf(" 0x%" PRIx32, static_cast<uint32_t>(value));
diff --git a/libutils/Android.bp b/libutils/Android.bp
index d635e65..600c91c 100644
--- a/libutils/Android.bp
+++ b/libutils/Android.bp
@@ -58,8 +58,8 @@
         "-Wall",
         "-Werror",
     ],
-    include_dirs: ["external/safe-iop/include"],
     header_libs: [
+        "libbase_headers",
         "libutils_headers",
     ],
     export_header_lib_headers: [
diff --git a/libutils/RefBase.cpp b/libutils/RefBase.cpp
index 3f1e79a..ae10789 100644
--- a/libutils/RefBase.cpp
+++ b/libutils/RefBase.cpp
@@ -19,6 +19,8 @@
 
 #include <memory>
 
+#include <android-base/macros.h>
+
 #include <utils/RefBase.h>
 
 #include <utils/CallStack.h>
@@ -479,7 +481,7 @@
     case INITIAL_STRONG_VALUE:
         refs->mStrong.fetch_sub(INITIAL_STRONG_VALUE,
                 std::memory_order_relaxed);
-        // fall through...
+        FALLTHROUGH_INTENDED;
     case 0:
         refs->mBase->onFirstRef();
     }
diff --git a/libutils/Unicode.cpp b/libutils/Unicode.cpp
index 82f650d..5f0a51f 100644
--- a/libutils/Unicode.cpp
+++ b/libutils/Unicode.cpp
@@ -16,8 +16,9 @@
 
 #define LOG_TAG "unicode"
 
-#include <utils/Unicode.h>
+#include <android-base/macros.h>
 #include <limits.h>
+#include <utils/Unicode.h>
 
 #include <log/log.h>
 
@@ -105,8 +106,11 @@
     switch (bytes)
     {   /* note: everything falls through. */
         case 4: *--dstP = (uint8_t)((srcChar | kByteMark) & kByteMask); srcChar >>= 6;
+            FALLTHROUGH_INTENDED;
         case 3: *--dstP = (uint8_t)((srcChar | kByteMark) & kByteMask); srcChar >>= 6;
+            FALLTHROUGH_INTENDED;
         case 2: *--dstP = (uint8_t)((srcChar | kByteMark) & kByteMask); srcChar >>= 6;
+            FALLTHROUGH_INTENDED;
         case 1: *--dstP = (uint8_t)(srcChar | kFirstByteMark[bytes]);
     }
 }
diff --git a/libutils/VectorImpl.cpp b/libutils/VectorImpl.cpp
index 00a904d..e16f88d 100644
--- a/libutils/VectorImpl.cpp
+++ b/libutils/VectorImpl.cpp
@@ -24,8 +24,6 @@
 
 #include <log/log.h>
 
-#include <safe_iop.h>
-
 #include "SharedBuffer.h"
 
 /*****************************************************************************/
@@ -342,7 +340,7 @@
     }
 
     size_t new_allocation_size = 0;
-    LOG_ALWAYS_FATAL_IF(!safe_mul(&new_allocation_size, new_capacity, mItemSize));
+    LOG_ALWAYS_FATAL_IF(__builtin_mul_overflow(new_capacity, mItemSize, &new_allocation_size));
     SharedBuffer* sb = SharedBuffer::alloc(new_allocation_size);
     if (sb) {
         void* array = sb->data();
@@ -386,7 +384,7 @@
             this, (int)where, (int)amount, (int)mCount); // caller already checked
 
     size_t new_size;
-    LOG_ALWAYS_FATAL_IF(!safe_add(&new_size, mCount, amount), "new_size overflow");
+    LOG_ALWAYS_FATAL_IF(__builtin_add_overflow(mCount, amount, &new_size), "new_size overflow");
 
     if (capacity() < new_size) {
         // NOTE: This implementation used to resize vectors as per ((3*x + 1) / 2)
@@ -397,17 +395,18 @@
         //
         // This approximates the old calculation, using (x + (x/2) + 1) instead.
         size_t new_capacity = 0;
-        LOG_ALWAYS_FATAL_IF(!safe_add(&new_capacity, new_size, (new_size / 2)),
+        LOG_ALWAYS_FATAL_IF(__builtin_add_overflow(new_size, (new_size / 2), &new_capacity),
                             "new_capacity overflow");
-        LOG_ALWAYS_FATAL_IF(!safe_add(&new_capacity, new_capacity, static_cast<size_t>(1u)),
-                            "new_capacity overflow");
+        LOG_ALWAYS_FATAL_IF(
+                __builtin_add_overflow(new_capacity, static_cast<size_t>(1u), &new_capacity),
+                "new_capacity overflow");
         new_capacity = max(kMinVectorCapacity, new_capacity);
 
         size_t new_alloc_size = 0;
-        LOG_ALWAYS_FATAL_IF(!safe_mul(&new_alloc_size, new_capacity, mItemSize),
+        LOG_ALWAYS_FATAL_IF(__builtin_mul_overflow(new_capacity, mItemSize, &new_alloc_size),
                             "new_alloc_size overflow");
 
-//        ALOGV("grow vector %p, new_capacity=%d", this, (int)new_capacity);
+        // ALOGV("grow vector %p, new_capacity=%d", this, (int)new_capacity);
         if ((mStorage) &&
             (mCount==where) &&
             (mFlags & HAS_TRIVIAL_COPY) &&
@@ -464,7 +463,7 @@
             this, (int)where, (int)amount, (int)mCount); // caller already checked
 
     size_t new_size;
-    LOG_ALWAYS_FATAL_IF(!safe_sub(&new_size, mCount, amount));
+    LOG_ALWAYS_FATAL_IF(__builtin_sub_overflow(mCount, amount, &new_size));
 
     if (new_size < (capacity() / 2)) {
         // NOTE: (new_size * 2) is safe because capacity didn't overflow and
diff --git a/libziparchive/Android.bp b/libziparchive/Android.bp
index 2606aa9..fd3f602 100644
--- a/libziparchive/Android.bp
+++ b/libziparchive/Android.bp
@@ -158,4 +158,5 @@
         "libbase",
         "libziparchive",
     ],
+    recovery_available: true,
 }
diff --git a/libziparchive/zip_archive.cc b/libziparchive/zip_archive.cc
index 9536fc7..add6e14 100644
--- a/libziparchive/zip_archive.cc
+++ b/libziparchive/zip_archive.cc
@@ -41,6 +41,7 @@
 #include <android-base/logging.h>
 #include <android-base/macros.h>  // TEMP_FAILURE_RETRY may or may not be in unistd
 #include <android-base/memory.h>
+#include <android-base/utf8.h>
 #include <log/log.h>
 #include <utils/Compat.h>
 #include <utils/FileMap.h>
@@ -471,7 +472,7 @@
 }
 
 int32_t OpenArchive(const char* fileName, ZipArchiveHandle* handle) {
-  const int fd = open(fileName, O_RDONLY | O_BINARY, 0);
+  const int fd = ::android::base::utf8::open(fileName, O_RDONLY | O_BINARY, 0);
   ZipArchive* archive = new ZipArchive(fd, true);
   *handle = archive;
 
diff --git a/llkd/Android.bp b/llkd/Android.bp
index a6edd26..62a637d 100644
--- a/llkd/Android.bp
+++ b/llkd/Android.bp
@@ -20,6 +20,12 @@
     export_include_dirs: ["include"],
 
     cflags: ["-Werror"],
+
+    product_variables: {
+        debuggable: {
+            cppflags: ["-D__PTRACE_ENABLED__"],
+        },
+    },
 }
 
 cc_binary {
@@ -39,4 +45,9 @@
     cflags: ["-Werror"],
 
     init_rc: ["llkd.rc"],
+    product_variables: {
+        debuggable: {
+            init_rc: ["llkd-debuggable.rc"],
+	},
+    },
 }
diff --git a/llkd/README.md b/llkd/README.md
index 2314583..1f69718 100644
--- a/llkd/README.md
+++ b/llkd/README.md
@@ -23,6 +23,9 @@
 Operations
 ----------
 
+There are 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
@@ -32,6 +35,26 @@
 double the expected time to flow through the mainloop.  Sampling is every
 ro.llk_sample_ms.
 
+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:
+
+- Check is looking for " " + __symbol__+ "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.
+
 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
@@ -40,7 +63,9 @@
 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.
+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.
 
 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
@@ -93,14 +118,31 @@
 #### ro.llk.Z.timeout_ms
 default ro.llk.timeout_ms, Z maximum timelimit.
 
+#### ro.llk.stack.timeout_ms
+default ro.llk.timeout_ms,
+checking for persistent stack symbols maximum timelimit.
+Only active on userdebug and eng builds.
+
 #### ro.llk.check_ms
 default 2 minutes samples of threads for D or Z.
 
+#### ro.llk.stack
+default *empty* or false, comma separated list of kernel symbols.
+The string "*false*" is the equivalent to an *empty* list.
+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.
+Only active on userdebug and eng builds.
+
 #### ro.llk.blacklist.process
 default 0,1,2 (kernel, init and [kthreadd]) plus process names
 init,[kthreadd],[khungtaskd],lmkd,lmkd.llkd,llkd,watchdogd,
 [watchdogd],[watchdogd/0],...,[watchdogd/***get_nprocs**-1*].
-The string false is the equivalent to an empty list.
+The string "*false*" is the equivalent to an *empty* list.
 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.
@@ -108,15 +150,23 @@
 
 #### ro.llk.blacklist.parent
 default 0,2 (kernel and [kthreadd]).
-The string false is the equivalent to an empty list.
+The string "*false*" is the equivalent to an *empty* list.
 Do not watch processes that have this parent.
 A parent process can be comm, cmdline or pid reference.
 
 #### ro.llk.blacklist.uid
 default *empty* or false, comma separated list of uid numbers or names.
-The string false is the equivalent to an empty list.
+The string "*false*" is the equivalent to an *empty* list.
 Do not watch processes that match this uid.
 
+#### ro.llk.blacklist.process.stack
+default process names init,lmkd,lmkd.llkd,llkd,keystore,logd.
+The string "*false*" is the equivalent to an *empty* list.
+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.
+
 Architectural Concerns
 ----------------------
 
diff --git a/llkd/include/llkd.h b/llkd/include/llkd.h
index e3ae4bb..d0188ec 100644
--- a/llkd/include/llkd.h
+++ b/llkd/include/llkd.h
@@ -43,9 +43,12 @@
 #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_BLACKLIST_PROCESS_PROPERTY "ro.llk.blacklist.process"
 #define LLK_BLACKLIST_PROCESS_DEFAULT  \
     "0,1,2,init,[kthreadd],[khungtaskd],lmkd,lmkd.llkd,llkd,watchdogd,[watchdogd],[watchdogd/0]"
@@ -53,6 +56,8 @@
 #define LLK_BLACKLIST_PARENT_DEFAULT   "0,2,[kthreadd]"
 #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,/system/bin/keystore"
 /* clang-format on */
 
 __END_DECLS
diff --git a/llkd/libllkd.cpp b/llkd/libllkd.cpp
index 48551f2..58c2ba8 100644
--- a/llkd/libllkd.cpp
+++ b/llkd/libllkd.cpp
@@ -73,7 +73,14 @@
 bool llkMlockall = LLK_MLOCKALL_DEFAULT;             // run mlocked
 bool llkTestWithKill = LLK_KILLTEST_DEFAULT;         // issue test kills
 milliseconds llkTimeoutMs = LLK_TIMEOUT_MS_DEFAULT;  // default timeout
-enum { llkStateD, llkStateZ, llkNumStates };         // state indexes
+enum {                                               // enum of state indexes
+    llkStateD,                                       // Persistent 'D' state
+    llkStateZ,                                       // Persistent 'Z' state
+#ifdef __PTRACE_ENABLED__                            // Extra privileged states
+    llkStateStack,                                   // stack signature
+#endif                                               // End of extra privilege
+    llkNumStates,                                    // Maxumum number of states
+};                                                   // state indexes
 milliseconds llkStateTimeoutMs[llkNumStates];        // timeout override for each detection state
 milliseconds llkCheckMs;                             // checking interval to inspect any
                                                      // persistent live-locked states
@@ -83,6 +90,10 @@
 // Provides a wide angle of margin b/c khtTimeout is also its granularity.
 seconds khtTimeout = duration_cast<seconds>(llkTimeoutMs * (1 + LLK_CHECKS_PER_TIMEOUT_DEFAULT) /
                                             LLK_CHECKS_PER_TIMEOUT_DEFAULT);
+#ifdef __PTRACE_ENABLED__
+// list of stack symbols to search for persistence.
+std::unordered_set<std::string> llkCheckStackSymbols;
+#endif
 
 // Blacklist variables, initialized with comma separated lists of high false
 // positive and/or dangerous references, e.g. without self restart, for pid,
@@ -97,6 +108,11 @@
 std::unordered_set<std::string> llkBlacklistParent;
 // list of uids, and uid names, to skip, default nothing
 std::unordered_set<std::string> llkBlacklistUid;
+#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;
+#endif
 
 class dir {
   public:
@@ -263,6 +279,9 @@
                                    // forward scheduling progress.
     milliseconds update;           // llkUpdate millisecond signature of last.
     milliseconds count;            // duration in state.
+#ifdef __PTRACE_ENABLED__          // Privileged state checking
+    milliseconds count_stack;      // duration where stack is stagnant.
+#endif                             // End privilege
     pid_t pid;                     // /proc/<pid> before iterating through
                                    // /proc/<pid>/task/<tid> for threads.
     pid_t ppid;                    // /proc/<tid>/stat field 4 parent pid.
@@ -272,6 +291,9 @@
     std::string cmdline;           // cached /cmdline content
     char state;                    // /proc/<tid>/stat field 3: Z or D
                                    // (others we do not monitor: S, R, T or ?)
+#ifdef __PTRACE_ENABLED__          // Privileged state checking
+    char stack;                    // index in llkCheckStackSymbols for matches
+#endif                             // and with maximum index PROP_VALUE_MAX/2.
     char comm[TASK_COMM_LEN + 3];  // space for adding '[' and ']'
     bool exeMissingValid;          // exeMissing has been cached
     bool cmdlineValid;             // cmdline has been cached
@@ -286,11 +308,17 @@
           nrSwitches(0),
           update(llkUpdate),
           count(0ms),
+#ifdef __PTRACE_ENABLED__
+          count_stack(0ms),
+#endif
           pid(pid),
           ppid(ppid),
           uid(-1),
           time(time),
           state(state),
+#ifdef __PTRACE_ENABLED__
+          stack(-1),
+#endif
           exeMissingValid(false),
           cmdlineValid(false),
           updated(true),
@@ -343,6 +371,10 @@
     void reset(void) {  // reset cache, if we detected pid rollover
         uid = -1;
         state = '?';
+#ifdef __PTRACE_ENABLED__
+        count_stack = 0ms;
+        stack = -1;
+#endif
         cmdline = "";
         comm[0] = '\0';
         exeMissingValid = false;
@@ -667,6 +699,48 @@
     return ret;
 }
 
+#ifdef __PTRACE_ENABLED__
+bool llkCheckStack(proc* procp, const std::string& piddir) {
+    if (llkCheckStackSymbols.empty()) return false;
+    if (procp->state == 'Z') {  // No brains for Zombies
+        procp->stack = -1;
+        procp->count_stack = 0ms;
+        return false;
+    }
+
+    // Don't check process that are known to block ptrace, save sepolicy noise.
+    if (llkSkipName(std::to_string(procp->pid), llkBlacklistStack)) return false;
+    if (llkSkipName(procp->getComm(), llkBlacklistStack)) return false;
+    if (llkSkipName(procp->getCmdline(), llkBlacklistStack)) return false;
+
+    auto kernel_stack = ReadFile(piddir + "/stack");
+    if (kernel_stack.empty()) {
+        LOG(INFO) << piddir << "/stack empty comm=" << procp->getComm()
+                  << " cmdline=" << procp->getCmdline();
+        return false;
+    }
+    // A scheduling incident that should not reset count_stack
+    if (kernel_stack.find(" cpu_worker_pools+0x") != std::string::npos) return false;
+    char idx = -1;
+    char match = -1;
+    for (const auto& stack : llkCheckStackSymbols) {
+        if (++idx < 0) break;
+        if (kernel_stack.find(" "s + stack + "+0x") != std::string::npos) {
+            match = idx;
+            break;
+        }
+    }
+    if (procp->stack != match) {
+        procp->stack = match;
+        procp->count_stack = 0ms;
+        return false;
+    }
+    if (match == char(-1)) return false;
+    procp->count_stack += llkCycle;
+    return procp->count_stack >= llkStateTimeoutMs[llkStateStack];
+}
+#endif
+
 // Primary ABA mitigation watching last time schedule activity happened
 void llkCheckSchedUpdate(proc* procp, const std::string& piddir) {
     // Audit finds /proc/<tid>/sched is just over 1K, and
@@ -731,13 +805,23 @@
               << LLK_TIMEOUT_MS_PROPERTY "=" << llkFormat(llkTimeoutMs) << "\n"
               << LLK_D_TIMEOUT_MS_PROPERTY "=" << llkFormat(llkStateTimeoutMs[llkStateD]) << "\n"
               << LLK_Z_TIMEOUT_MS_PROPERTY "=" << llkFormat(llkStateTimeoutMs[llkStateZ]) << "\n"
+#ifdef __PTRACE_ENABLED__
+              << LLK_STACK_TIMEOUT_MS_PROPERTY "=" << llkFormat(llkStateTimeoutMs[llkStateStack])
+              << "\n"
+#endif
               << LLK_CHECK_MS_PROPERTY "=" << llkFormat(llkCheckMs) << "\n"
+#ifdef __PTRACE_ENABLED__
+              << LLK_CHECK_STACK_PROPERTY "=" << llkFormat(llkCheckStackSymbols) << "\n"
+              << LLK_BLACKLIST_STACK_PROPERTY "=" << llkFormat(llkBlacklistStack) << "\n"
+#endif
               << LLK_BLACKLIST_PROCESS_PROPERTY "=" << llkFormat(llkBlacklistProcess) << "\n"
               << LLK_BLACKLIST_PARENT_PROPERTY "=" << llkFormat(llkBlacklistParent) << "\n"
               << LLK_BLACKLIST_UID_PROPERTY "=" << llkFormat(llkBlacklistUid);
 }
 
 void* llkThread(void* obj) {
+    prctl(PR_SET_DUMPABLE, 0);
+
     LOG(INFO) << "started";
 
     std::string name = std::to_string(::gettid());
@@ -890,9 +974,14 @@
             if (pid == myPid) {
                 break;
             }
-            if (!llkIsMonitorState(state)) {
+#ifdef __PTRACE_ENABLED__
+            // if no stack monitoring, we can quickly exit here
+            if (!llkIsMonitorState(state) && llkCheckStackSymbols.empty()) {
                 continue;
             }
+#else
+            if (!llkIsMonitorState(state)) continue;
+#endif
             if ((tid == myTid) || llkSkipPid(tid)) {
                 continue;
             }
@@ -923,12 +1012,26 @@
             // ABA mitigation watching last time schedule activity happened
             llkCheckSchedUpdate(procp, piddir);
 
-            // Can only fall through to here if registered D or Z state !!!
-            if (procp->count < llkStateTimeoutMs[(state == 'Z') ? llkStateZ : llkStateD]) {
-                LOG(VERBOSE) << state << ' ' << llkFormat(procp->count) << ' ' << ppid << "->"
-                             << pid << "->" << tid << ' ' << procp->getComm();
+#ifdef __PTRACE_ENABLED__
+            auto stuck = llkCheckStack(procp, piddir);
+            if (llkIsMonitorState(state)) {
+                if (procp->count >= llkStateTimeoutMs[(state == 'Z') ? llkStateZ : llkStateD]) {
+                    stuck = true;
+                } else if (procp->count != 0ms) {
+                    LOG(VERBOSE) << state << ' ' << llkFormat(procp->count) << ' ' << ppid << "->"
+                                 << pid << "->" << tid << ' ' << procp->getComm();
+                }
+            }
+            if (!stuck) continue;
+#else
+            if (procp->count >= llkStateTimeoutMs[(state == 'Z') ? llkStateZ : llkStateD]) {
+                if (procp->count != 0ms) {
+                    LOG(VERBOSE) << state << ' ' << llkFormat(procp->count) << ' ' << ppid << "->"
+                                 << pid << "->" << tid << ' ' << procp->getComm();
+                }
                 continue;
             }
+#endif
 
             // We have to kill it to determine difference between live lock
             // and persistent state blocked on a resource.  Is there something
@@ -967,12 +1070,13 @@
                         // not working is we kill a process that likes to
                         // stay in 'D' state, instead of panicing the
                         // kernel (worse).
-                        LOG(WARNING) << "D " << llkFormat(procp->count) << ' ' << pid << "->" << tid
-                                     << ' ' << procp->getComm() << " [kill]";
+                    default:
+                        LOG(WARNING) << state << ' ' << llkFormat(procp->count) << ' ' << pid
+                                     << "->" << tid << ' ' << procp->getComm() << " [kill]";
                         if ((llkKillOneProcess(llkTidLookup(pid), procp) >= 0) ||
-                            (llkKillOneProcess(pid, 'D', tid) >= 0) ||
+                            (llkKillOneProcess(pid, state, tid) >= 0) ||
                             (llkKillOneProcess(procp, procp) >= 0) ||
-                            (llkKillOneProcess(tid, 'D', tid) >= 0)) {
+                            (llkKillOneProcess(tid, state, tid) >= 0)) {
                             continue;
                         }
                         break;
@@ -981,7 +1085,8 @@
             // We are here because we have confirmed kernel live-lock
             LOG(ERROR) << state << ' ' << llkFormat(procp->count) << ' ' << ppid << "->" << pid
                        << "->" << tid << ' ' << procp->getComm() << " [panic]";
-            llkPanicKernel(true, tid, (state == 'Z') ? "zombie" : "driver");
+            llkPanicKernel(true, tid,
+                           (state == 'Z') ? "zombie" : (state == 'D') ? "driver" : "sleeping");
         }
         LOG(VERBOSE) << "+closedir()";
     }
@@ -1039,8 +1144,9 @@
 }
 
 bool llkInit(const char* threadname) {
+    auto debuggable = android::base::GetBoolProperty("ro.debuggable", false);
     llkLowRam = android::base::GetBoolProperty("ro.config.low_ram", false);
-    if (!LLK_ENABLE_DEFAULT && android::base::GetBoolProperty("ro.debuggable", false)) {
+    if (!LLK_ENABLE_DEFAULT && debuggable) {
         llkEnable = android::base::GetProperty(LLK_ENABLE_PROPERTY, "eng") == "eng";
         khtEnable = android::base::GetProperty(KHT_ENABLE_PROPERTY, "eng") == "eng";
     }
@@ -1067,8 +1173,21 @@
     llkValidate();  // validate llkTimeoutMs, llkCheckMs and llkCycle
     llkStateTimeoutMs[llkStateD] = GetUintProperty(LLK_D_TIMEOUT_MS_PROPERTY, llkTimeoutMs);
     llkStateTimeoutMs[llkStateZ] = GetUintProperty(LLK_Z_TIMEOUT_MS_PROPERTY, llkTimeoutMs);
+#ifdef __PTRACE_ENABLED__
+    llkStateTimeoutMs[llkStateStack] = GetUintProperty(LLK_STACK_TIMEOUT_MS_PROPERTY, llkTimeoutMs);
+#endif
     llkCheckMs = GetUintProperty(LLK_CHECK_MS_PROPERTY, llkCheckMs);
     llkValidate();  // validate all (effectively minus llkTimeoutMs)
+#ifdef __PTRACE_ENABLED__
+    if (debuggable) {
+        llkCheckStackSymbols = llkSplit(
+                android::base::GetProperty(LLK_CHECK_STACK_PROPERTY, LLK_CHECK_STACK_DEFAULT));
+    }
+    std::string defaultBlacklistStack(LLK_BLACKLIST_STACK_DEFAULT);
+    if (!debuggable) defaultBlacklistStack += ",logd,/system/bin/logd";
+    llkBlacklistStack = llkSplit(
+            android::base::GetProperty(LLK_BLACKLIST_STACK_PROPERTY, defaultBlacklistStack));
+#endif
     std::string defaultBlacklistProcess(
         std::to_string(kernelPid) + "," + std::to_string(initPid) + "," +
         std::to_string(kthreaddPid) + "," + std::to_string(::getpid()) + "," +
diff --git a/llkd/llkd-debuggable.rc b/llkd/llkd-debuggable.rc
new file mode 100644
index 0000000..724cb5e
--- /dev/null
+++ b/llkd/llkd-debuggable.rc
@@ -0,0 +1,19 @@
+on property:ro.debuggable=1
+    setprop llk.enable ${ro.llk.enable:-1}
+    setprop khungtask.enable ${ro.khungtask.enable:-1}
+
+on property:ro.llk.enable=eng
+    setprop llk.enable ${ro.debuggable:-0}
+
+on property:ro.khungtask.enable=eng
+    setprop khungtask.enable ${ro.debuggable:-0}
+
+service llkd-1 /system/bin/llkd
+    class late_start
+    disabled
+    user llkd
+    group llkd readproc
+    capabilities KILL IPC_LOCK SYS_PTRACE DAC_OVERRIDE
+    file /dev/kmsg w
+    file /proc/sysrq-trigger w
+    writepid /dev/cpuset/system-background/tasks
diff --git a/llkd/llkd.cpp b/llkd/llkd.cpp
index f10253d..1920198 100644
--- a/llkd/llkd.cpp
+++ b/llkd/llkd.cpp
@@ -17,6 +17,7 @@
 #include "llkd.h"
 
 #include <sched.h>
+#include <sys/prctl.h>
 #include <unistd.h>
 
 #include <chrono>
@@ -26,6 +27,8 @@
 using namespace std::chrono;
 
 int main(int, char**) {
+    prctl(PR_SET_DUMPABLE, 0);
+
     LOG(INFO) << "started";
 
     bool enabled = llkInit();
diff --git a/llkd/llkd.rc b/llkd/llkd.rc
index e538cdb..b1f96a8 100644
--- a/llkd/llkd.rc
+++ b/llkd/llkd.rc
@@ -3,15 +3,8 @@
     setprop llk.enable ${ro.llk.enable:-0}
     setprop khungtask.enable ${ro.khungtask.enable:-0}
 
-on property:ro.debuggable=1
-    setprop llk.enable ${ro.llk.enable:-1}
-    setprop khungtask.enable ${ro.khungtask.enable:-1}
-
-on property:ro.llk.enable=eng
-    setprop llk.enable ${ro.debuggable:-0}
-
-on property:ro.khungtask.enable=eng
-    setprop khungtask.enable ${ro.debuggable:-0}
+on property:ro.llk.enable=true
+    setprop llk.enable true
 
 on property:llk.enable=1
     setprop llk.enable true
@@ -19,6 +12,9 @@
 on property:llk.enable=0
     setprop llk.enable false
 
+on property:ro.khungtask.enable=true
+    setprop khungtask.enable true
+
 on property:khungtask.enable=1
     setprop khungtask.enable true
 
@@ -36,9 +32,9 @@
     write /proc/sys/kernel/hung_task_panic 0
 
 on property:llk.enable=true
-    start llkd
+    start llkd-${ro.debuggable:-0}
 
-service llkd /system/bin/llkd
+service llkd-0 /system/bin/llkd
     class late_start
     disabled
     user llkd
diff --git a/llkd/tests/llkd_test.cpp b/llkd/tests/llkd_test.cpp
index 3a15ff1..f54932b 100644
--- a/llkd/tests/llkd_test.cpp
+++ b/llkd/tests/llkd_test.cpp
@@ -14,8 +14,10 @@
  * limitations under the License.
  */
 
+#include <fcntl.h>
 #include <signal.h>
 #include <stdint.h>
+#include <sys/stat.h>
 #include <sys/types.h>
 #include <sys/wait.h>
 #include <unistd.h>
@@ -81,9 +83,12 @@
         (GetUintProperty(LLK_CHECK_MS_PROPERTY,
                          LLK_TIMEOUT_MS_DEFAULT / LLK_CHECKS_PER_TIMEOUT_DEFAULT) !=
          duration_cast<milliseconds>(10s))) {
-        execute("stop llkd");
+        execute("stop llkd-0");
+        execute("stop llkd-1");
         rest();
         std::string setprop("setprop ");
+        execute((setprop + LLK_CHECK_STACK_PROPERTY + " SyS_openat").c_str());
+        rest();
         execute((setprop + LLK_ENABLE_WRITEABLE_PROPERTY + " false").c_str());
         rest();
         execute((setprop + LLK_TIMEOUT_MS_PROPERTY + " 120000").c_str());
@@ -92,8 +97,10 @@
         rest();
         execute((setprop + LLK_CHECK_MS_PROPERTY + " 10000").c_str());
         rest();
-        execute((setprop + LLK_ENABLE_PROPERTY + " true").c_str());
-        rest();
+        if (!default_enable) {
+            execute((setprop + LLK_ENABLE_PROPERTY + " true").c_str());
+            rest();
+        }
         execute((setprop + LLK_ENABLE_WRITEABLE_PROPERTY + " true").c_str());
         rest();
     }
@@ -104,7 +111,7 @@
     }
     default_enable = android::base::GetBoolProperty(LLK_ENABLE_PROPERTY, default_enable);
     if (default_enable) {
-        execute("start llkd");
+        execute("start llkd-1");
         rest();
         GTEST_LOG_INFO << "llkd enabled\n";
     } else {
@@ -123,8 +130,10 @@
         llkTimeoutMs = LLK_TIMEOUT_MS_MINIMUM;
     }
     milliseconds llkCheckMs = llkTimeoutMs / LLK_CHECKS_PER_TIMEOUT_DEFAULT;
-    auto timeout = GetUintProperty(
-        (state == 'Z') ? LLK_Z_TIMEOUT_MS_PROPERTY : LLK_D_TIMEOUT_MS_PROPERTY, llkTimeoutMs);
+    auto timeout = GetUintProperty((state == 'Z') ? LLK_Z_TIMEOUT_MS_PROPERTY
+                                                  : (state == 'S') ? LLK_STACK_TIMEOUT_MS_PROPERTY
+                                                                   : LLK_D_TIMEOUT_MS_PROPERTY,
+                                   llkTimeoutMs);
     if (timeout < LLK_TIMEOUT_MS_MINIMUM) {
         timeout = LLK_TIMEOUT_MS_MINIMUM;
     }
@@ -285,3 +294,41 @@
 
     waitForPid(child_pid);
 }
+
+TEST(llkd, sleep) {
+    if (checkKill("kernel_panic,sysrq,livelock,sleeping")) {
+        return;
+    }
+    if (!android::base::GetBoolProperty("ro.debuggable", false)) {
+        GTEST_LOG_WARNING << "Features not available on user builds\n";
+    }
+
+    const auto period = llkdSleepPeriod('S');
+
+    /* Create a Persistent SyS_openat for single-ended pipe */
+    static constexpr char stack_pipe_file[] = "/dev/stack_pipe_file";
+    unlink(stack_pipe_file);
+    auto pipe_ret = mknod(stack_pipe_file, S_IFIFO | 0666, 0);
+    ASSERT_LE(0, pipe_ret);
+
+    auto child_pid = fork();
+    ASSERT_LE(0, child_pid);
+    if (!child_pid) {
+        child_pid = fork();
+        ASSERT_LE(0, child_pid);
+        if (!child_pid) {
+            sleep(period.count());
+            auto fd = open(stack_pipe_file, O_RDONLY | O_CLOEXEC);
+            close(fd);
+            exit(0);
+        } else {
+            auto fd = open(stack_pipe_file, O_WRONLY | O_CLOEXEC);
+            close(fd);
+            exit(42);
+        }
+    }
+
+    waitForPid(child_pid);
+
+    unlink(stack_pipe_file);
+}
diff --git a/lmkd/lmkd.c b/lmkd/lmkd.c
index 02534f2..1980dc6 100644
--- a/lmkd/lmkd.c
+++ b/lmkd/lmkd.c
@@ -31,6 +31,7 @@
 #include <sys/socket.h>
 #include <sys/sysinfo.h>
 #include <sys/types.h>
+#include <time.h>
 #include <unistd.h>
 
 #include <cutils/properties.h>
@@ -38,6 +39,7 @@
 #include <lmkd.h>
 #include <log/log.h>
 #include <log/log_event_list.h>
+#include <log/log_time.h>
 
 #ifdef LMKD_LOG_STATS
 #include "statslog.h"
@@ -83,6 +85,10 @@
 #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)
+
 /* Defined as ProcessList.SYSTEM_ADJ in ProcessList.java */
 #define SYSTEM_ADJ (-900)
 
@@ -91,6 +97,8 @@
 
 #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;
@@ -494,6 +502,12 @@
     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 void cmd_procprio(LMKD_CTRL_PACKET packet) {
     struct proc *procp;
     char path[80];
@@ -604,18 +618,52 @@
 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 > (int)ARRAY_SIZE(lowmem_adj))
+    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];
@@ -1051,8 +1099,7 @@
 }
 
 /* Kill one process specified by procp.  Returns the size of the process killed */
-static int kill_one_process(struct proc* procp, int min_score_adj,
-                            enum vmpressure_level level) {
+static int kill_one_process(struct proc* procp) {
     int pid = procp->pid;
     uid_t uid = procp->uid;
     char *taskname;
@@ -1086,11 +1133,8 @@
 
     /* CAP_KILL required */
     r = kill(pid, SIGKILL);
-    ALOGI(
-        "Killing '%s' (%d), uid %d, adj %d\n"
-        "   to free %ldkB because system is under %s memory pressure (min_oom_adj=%d)\n",
-        taskname, pid, uid, procp->oomadj, tasksize * page_k,
-        level_name[level], min_score_adj);
+    ALOGI("Kill '%s' (%d), uid %d, oom_adj %d to free %ldkB",
+        taskname, pid, uid, procp->oomadj, tasksize * page_k);
     pid_remove(pid);
 
     TRACE_KILL_END();
@@ -1117,8 +1161,7 @@
  * If pages_to_free is set to 0 only one process will be killed.
  * Returns the size of the killed processes.
  */
-static int find_and_kill_processes(enum vmpressure_level level,
-                                   int min_score_adj, int pages_to_free) {
+static int find_and_kill_processes(int min_score_adj, int pages_to_free) {
     int i;
     int killed_size;
     int pages_freed = 0;
@@ -1137,7 +1180,7 @@
             if (!procp)
                 break;
 
-            killed_size = kill_one_process(procp, min_score_adj, level);
+            killed_size = kill_one_process(procp);
             if (killed_size >= 0) {
 #ifdef LMKD_LOG_STATS
                 if (enable_stats_log && !lmk_state_change_start) {
@@ -1228,12 +1271,6 @@
         level - 1 : level);
 }
 
-static inline unsigned long get_time_diff_ms(struct timeval *from,
-                                             struct timeval *to) {
-    return (to->tv_sec - from->tv_sec) * 1000 +
-           (to->tv_usec - from->tv_usec) / 1000;
-}
-
 static void mp_event_common(int data, uint32_t events __unused) {
     int ret;
     unsigned long long evcount;
@@ -1242,8 +1279,9 @@
     enum vmpressure_level lvl;
     union meminfo mi;
     union zoneinfo zi;
-    static struct timeval last_report_tm;
-    static unsigned long skip_count = 0;
+    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;
@@ -1272,19 +1310,22 @@
         }
     }
 
+    if (clock_gettime(CLOCK_MONOTONIC_COARSE, &curr_tm) != 0) {
+        ALOGE("Failed to get current time");
+        return;
+    }
+
     if (kill_timeout_ms) {
-        struct timeval curr_tm;
-        gettimeofday(&curr_tm, NULL);
-        if (get_time_diff_ms(&last_report_tm, &curr_tm) < kill_timeout_ms) {
-            skip_count++;
+        if (get_time_diff_ms(&last_kill_tm, &curr_tm) < kill_timeout_ms) {
+            kill_skip_count++;
             return;
         }
     }
 
-    if (skip_count > 0) {
+    if (kill_skip_count > 0) {
         ALOGI("%lu memory pressure events were skipped after a kill!",
-              skip_count);
-        skip_count = 0;
+              kill_skip_count);
+        kill_skip_count = 0;
     }
 
     if (meminfo_parse(&mi) < 0 || zoneinfo_parse(&zi) < 0) {
@@ -1380,7 +1421,7 @@
 do_kill:
     if (low_ram_device) {
         /* For Go devices kill only one task */
-        if (find_and_kill_processes(level, level_oomadj[level], 0) == 0) {
+        if (find_and_kill_processes(level_oomadj[level], 0) == 0) {
             if (debug_process_killing) {
                 ALOGI("Nothing to kill");
             }
@@ -1389,6 +1430,8 @@
         }
     } else {
         int pages_freed;
+        static struct timespec last_report_tm;
+        static unsigned long report_skip_count = 0;
 
         if (!use_minfree_levels) {
             /* If pressure level is less than critical and enough free swap then ignore */
@@ -1416,27 +1459,41 @@
             min_score_adj = level_oomadj[level];
         }
 
-        pages_freed = find_and_kill_processes(level, min_score_adj, pages_to_free);
+        pages_freed = find_and_kill_processes(min_score_adj, pages_to_free);
+
+        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;
+            }
+        }
+
+        /* Log meminfo whenever we kill or when report rate limit allows */
+        meminfo_log(&mi);
+        if (pages_freed >= pages_to_free) {
+            /* Reset kill time only if reclaimed enough memory */
+            last_kill_tm = curr_tm;
+        }
 
         if (use_minfree_levels) {
-            ALOGI("Killing because cache %ldkB is below "
-                  "limit %ldkB for oom_adj %d\n"
-                  "   Free memory is %ldkB %s reserved",
-                  other_file * page_k, minfree * page_k, min_score_adj,
-                  other_free * page_k, other_free >= 0 ? "above" : "below");
+            ALOGI("Killing to reclaim %ldkB, reclaimed %ldkB, cache(%ldkB) and "
+                "free(%" PRId64 "kB)-reserved(%" PRId64 "kB) below min(%ldkB) for oom_adj %d",
+                pages_to_free * page_k, 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("Killing to reclaim %ldkB, reclaimed %ldkB at oom_adj %d",
+                pages_to_free * page_k, pages_freed * page_k, min_score_adj);
         }
 
-        if (pages_freed < pages_to_free) {
-            ALOGI("Unable to free enough memory (pages to free=%d, pages freed=%d)",
-                  pages_to_free, pages_freed);
-        } else {
-            ALOGI("Reclaimed enough memory (pages to free=%d, pages freed=%d)",
-                  pages_to_free, pages_freed);
-            gettimeofday(&last_report_tm, NULL);
+        if (report_skip_count > 0) {
+            ALOGI("Suppressed %lu failed kill reports", report_skip_count);
+            report_skip_count = 0;
         }
-        if (pages_freed > 0) {
-            meminfo_log(&mi);
-        }
+
+        last_report_tm = curr_tm;
     }
 }
 
diff --git a/lmkd/tests/lmkd_test.cpp b/lmkd/tests/lmkd_test.cpp
index 1996bae..f54b25c 100644
--- a/lmkd/tests/lmkd_test.cpp
+++ b/lmkd/tests/lmkd_test.cpp
@@ -39,7 +39,7 @@
 #define LMKDTEST_RESPAWN_FLAG "LMKDTEST_RESPAWN"
 
 #define LMKD_LOGCAT_MARKER "lowmemorykiller"
-#define LMKD_KILL_MARKER_TEMPLATE LMKD_LOGCAT_MARKER ": Killing '%s'"
+#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
diff --git a/logcat/logcat.cpp b/logcat/logcat.cpp
index 0f56337..115b1a3 100644
--- a/logcat/logcat.cpp
+++ b/logcat/logcat.cpp
@@ -16,6 +16,7 @@
 
 #include "logcat.h"
 
+#include <android-base/macros.h>
 #include <arpa/inet.h>
 #include <assert.h>
 #include <ctype.h>
@@ -41,6 +42,7 @@
 #include <atomic>
 #include <memory>
 #include <string>
+#include <utility>
 #include <vector>
 
 #include <android-base/file.h>
@@ -565,23 +567,14 @@
     return android_log_setPrintFormat(context->logformat, format);
 }
 
-static const char multipliers[][2] = { { "" }, { "K" }, { "M" }, { "G" } };
-
-static unsigned long value_of_size(unsigned long value) {
-    for (unsigned i = 0;
-         (i < sizeof(multipliers) / sizeof(multipliers[0])) && (value >= 1024);
-         value /= 1024, ++i)
-        ;
-    return value;
-}
-
-static const char* multiplier_of_size(unsigned long value) {
-    unsigned i;
+static std::pair<unsigned long, const char*> format_of_size(unsigned long value) {
+    static const char multipliers[][3] = {{""}, {"Ki"}, {"Mi"}, {"Gi"}};
+    size_t i;
     for (i = 0;
          (i < sizeof(multipliers) / sizeof(multipliers[0])) && (value >= 1024);
          value /= 1024, ++i)
         ;
-    return multipliers[i];
+    return std::make_pair(value, multipliers[i]);
 }
 
 // String to unsigned int, returns -1 if it fails
@@ -967,7 +960,7 @@
             case 't':
                 got_t = true;
                 mode |= ANDROID_LOG_RDONLY | ANDROID_LOG_NONBLOCK;
-            // FALLTHRU
+                FALLTHROUGH_INTENDED;
             case 'T':
                 if (strspn(optarg, "0123456789") != strlen(optarg)) {
                     char* cp = parseTime(tail_time, optarg);
@@ -1017,7 +1010,7 @@
                     getLogSize = true;
                     break;
                 }
-            // FALLTHRU
+                FALLTHROUGH_INTENDED;
 
             case 'G': {
                 char* cp;
@@ -1031,15 +1024,15 @@
                     case 'g':
                     case 'G':
                         setLogSize *= 1024;
-                    // FALLTHRU
+                        FALLTHROUGH_INTENDED;
                     case 'm':
                     case 'M':
                         setLogSize *= 1024;
-                    // FALLTHRU
+                        FALLTHROUGH_INTENDED;
                     case 'k':
                     case 'K':
                         setLogSize *= 1024;
-                    // FALLTHRU
+                        FALLTHROUGH_INTENDED;
                     case '\0':
                         break;
 
@@ -1059,7 +1052,7 @@
                     getPruneList = true;
                     break;
                 }
-            // FALLTHRU
+                FALLTHROUGH_INTENDED;
 
             case 'P':
                 setPruneList = optarg;
@@ -1472,12 +1465,14 @@
             if ((size < 0) || (readable < 0)) {
                 reportErrorName(&getSizeFail, dev->device, allSelected);
             } 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 %ld%sb (%ld%sb consumed),"
-                         " max entry is %db, max payload is %db\n",
+                       "%s: ring buffer is %lu %sB (%lu %sB consumed),"
+                         " max entry is %d B, max payload is %d B\n",
                        dev->device,
-                       value_of_size(size), multiplier_of_size(size),
-                       value_of_size(readable), multiplier_of_size(readable),
+                       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,
diff --git a/logcat/tests/logcat_test.cpp b/logcat/tests/logcat_test.cpp
index cc1632a..9483bb2 100644
--- a/logcat/tests/logcat_test.cpp
+++ b/logcat/tests/logcat_test.cpp
@@ -31,6 +31,7 @@
 #include <string>
 
 #include <android-base/file.h>
+#include <android-base/macros.h>
 #include <android-base/stringprintf.h>
 #include <gtest/gtest.h>
 #include <log/event_tag_map.h>
@@ -557,47 +558,48 @@
 
     while (fgets(buffer, sizeof(buffer), fp)) {
         int size, consumed, max, payload;
-        char size_mult[3], consumed_mult[3];
+        char size_mult[4], consumed_mult[4];
         long full_size, full_consumed;
 
         size = consumed = max = payload = 0;
         // NB: crash log can be very small, not hit a Kb of consumed space
         //     doubly lucky we are not including it.
-        if (6 != sscanf(buffer,
-                        "%*s ring buffer is %d%2s (%d%2s consumed),"
-                        " max entry is %db, max payload is %db",
-                        &size, size_mult, &consumed, consumed_mult, &max,
-                        &payload)) {
-            fprintf(stderr, "WARNING: Parse error: %s", buffer);
-            continue;
-        }
+        EXPECT_EQ(6, sscanf(buffer,
+                            "%*s ring buffer is %d %3s (%d %3s consumed),"
+                            " max entry is %d B, max payload is %d B",
+                            &size, size_mult, &consumed, consumed_mult, &max, &payload))
+                << "Parse error on: " << buffer;
         full_size = size;
         switch (size_mult[0]) {
             case 'G':
                 full_size *= 1024;
-            /* FALLTHRU */
+                FALLTHROUGH_INTENDED;
             case 'M':
                 full_size *= 1024;
-            /* FALLTHRU */
+                FALLTHROUGH_INTENDED;
             case 'K':
                 full_size *= 1024;
-            /* FALLTHRU */
-            case 'b':
+                FALLTHROUGH_INTENDED;
+            case 'B':
                 break;
+            default:
+                ADD_FAILURE() << "Parse error on multiplier: " << size_mult;
         }
         full_consumed = consumed;
         switch (consumed_mult[0]) {
             case 'G':
                 full_consumed *= 1024;
-            /* FALLTHRU */
+                FALLTHROUGH_INTENDED;
             case 'M':
                 full_consumed *= 1024;
-            /* FALLTHRU */
+                FALLTHROUGH_INTENDED;
             case 'K':
                 full_consumed *= 1024;
-            /* FALLTHRU */
-            case 'b':
+                FALLTHROUGH_INTENDED;
+            case 'B':
                 break;
+            default:
+                ADD_FAILURE() << "Parse error on multiplier: " << consumed_mult;
         }
         EXPECT_GT((full_size * 9) / 4, full_consumed);
         EXPECT_GT(full_size, max);
@@ -1229,39 +1231,38 @@
         }
 
         int size, consumed, max, payload;
-        char size_mult[3], consumed_mult[3];
+        char size_mult[4], consumed_mult[4];
         size = consumed = max = payload = 0;
         if (6 == sscanf(buffer,
-                        "events: ring buffer is %d%2s (%d%2s consumed),"
-                        " max entry is %db, max payload is %db",
-                        &size, size_mult, &consumed, consumed_mult, &max,
-                        &payload)) {
+                        "events: ring buffer is %d %3s (%d %3s consumed),"
+                        " max entry is %d B, max payload is %d B",
+                        &size, size_mult, &consumed, consumed_mult, &max, &payload)) {
             long full_size = size, full_consumed = consumed;
 
             switch (size_mult[0]) {
                 case 'G':
                     full_size *= 1024;
-                /* FALLTHRU */
+                    FALLTHROUGH_INTENDED;
                 case 'M':
                     full_size *= 1024;
-                /* FALLTHRU */
+                    FALLTHROUGH_INTENDED;
                 case 'K':
                     full_size *= 1024;
-                /* FALLTHRU */
-                case 'b':
+                    FALLTHROUGH_INTENDED;
+                case 'B':
                     break;
             }
             switch (consumed_mult[0]) {
                 case 'G':
                     full_consumed *= 1024;
-                /* FALLTHRU */
+                    FALLTHROUGH_INTENDED;
                 case 'M':
                     full_consumed *= 1024;
-                /* FALLTHRU */
+                    FALLTHROUGH_INTENDED;
                 case 'K':
                     full_consumed *= 1024;
-                /* FALLTHRU */
-                case 'b':
+                    FALLTHROUGH_INTENDED;
+                case 'B':
                     break;
             }
             EXPECT_GT(full_size, full_consumed);
diff --git a/logd/LogKlog.cpp b/logd/LogKlog.cpp
index e4393a3..513c0c3 100644
--- a/logd/LogKlog.cpp
+++ b/logd/LogKlog.cpp
@@ -475,9 +475,7 @@
 static int convertKernelPrioToAndroidPrio(int pri) {
     switch (pri & LOG_PRIMASK) {
         case LOG_EMERG:
-        // FALLTHRU
         case LOG_ALERT:
-        // FALLTHRU
         case LOG_CRIT:
             return ANDROID_LOG_FATAL;
 
@@ -488,9 +486,7 @@
             return ANDROID_LOG_WARN;
 
         default:
-        // FALLTHRU
         case LOG_NOTICE:
-        // FALLTHRU
         case LOG_INFO:
             break;
 
diff --git a/platform_tools_tool_version.mk b/platform_tools_tool_version.mk
deleted file mode 100644
index eed2ab5..0000000
--- a/platform_tools_tool_version.mk
+++ /dev/null
@@ -1,22 +0,0 @@
-# Copyright (C) 2017 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.
-
-# We rewrite ${PLATFORM_SDK_VERSION} with 0 rather than $(PLATFORM_SDK_VERSION)
-# because on the actual platform tools release branches the file contains a
-# literal instead. Using 0 lets us easily distinguish non-canonical builds.
-platform_tools_version := $(shell sed \
-    's/$${PLATFORM_SDK_VERSION}/0/ ; s/^Pkg.Revision=\(.*\)/\1/p ; d' \
-    development/sdk/plat_tools_source.prop_template \
-  )
-tool_version := $(platform_tools_version)-$(BUILD_NUMBER_FROM_FILE)
diff --git a/rootdir/Android.mk b/rootdir/Android.mk
index 07f0797..b68dc34 100644
--- a/rootdir/Android.mk
+++ b/rootdir/Android.mk
@@ -206,6 +206,7 @@
 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
 
@@ -243,6 +244,7 @@
 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
diff --git a/rootdir/init.rc b/rootdir/init.rc
index db89ea8..915540e 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -306,12 +306,12 @@
     # /data, which in turn can only be loaded when system properties are present.
     trigger post-fs-data
 
-    # Now we can start zygote for devices with file based encryption
-    trigger zygote-start
-
     # Load persist properties and override properties (if enabled) from /data.
     trigger load_persist_props_action
 
+    # Now we can start zygote for devices with file based encryption
+    trigger zygote-start
+
     # Remove a file to wake up anything waiting for firmware.
     trigger firmware_mounts_complete
 
@@ -716,12 +716,12 @@
     class_start main
 
 on property:vold.decrypt=trigger_restart_framework
-    stop surfaceflinger
-    start surfaceflinger
     # A/B update verifier that marks a successful boot.
     exec_start update_verifier
     class_start main
     class_start late_start
+    setprop service.bootanim.exit 0
+    start bootanim
 
 on property:vold.decrypt=trigger_shutdown_framework
     class_reset late_start
diff --git a/rootdir/ld_config_backward_compatibility_check.py b/rootdir/ld_config_backward_compatibility_check.py
new file mode 100755
index 0000000..1a27578
--- /dev/null
+++ b/rootdir/ld_config_backward_compatibility_check.py
@@ -0,0 +1,177 @@
+#!/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/update_and_install_ld_config.mk b/rootdir/update_and_install_ld_config.mk
index 4d6df77..56a30b2 100644
--- a/rootdir/update_and_install_ld_config.mk
+++ b/rootdir/update_and_install_ld_config.mk
@@ -18,10 +18,13 @@
 
 # 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))
 
+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)
@@ -82,11 +85,19 @@
 $(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)
 deps := $(llndk_libraries_file) $(vndksp_libraries_file) $(vndkcore_libraries_file) \
   $(vndkprivate_libraries_file)
+ifeq ($(check_backward_compatibility),true)
+deps += $(compatibility_check_script)
+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" $< >$@
@@ -108,9 +119,11 @@
 	$(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 :=
diff --git a/shell_and_utilities/Android.bp b/shell_and_utilities/Android.bp
index 3d7521c..2d4a26f 100644
--- a/shell_and_utilities/Android.bp
+++ b/shell_and_utilities/Android.bp
@@ -21,6 +21,7 @@
         "tcpdump",
         "toolbox",
         "toybox",
+        "unzip",
     ],
 }
 
@@ -31,6 +32,7 @@
         "sh.recovery",
         "toolbox.recovery",
         "toybox.recovery",
+        "unzip.recovery",
     ],
 }
 
diff --git a/storaged/storaged_diskstats.cpp b/storaged/storaged_diskstats.cpp
index 1050033..8b5001d 100644
--- a/storaged/storaged_diskstats.cpp
+++ b/storaged/storaged_diskstats.cpp
@@ -129,6 +129,10 @@
 
     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.";
+            return;
+        }
         if (result != Result::SUCCESS || halStats.size() == 0) {
             LOG_TO(SYSTEM, ERROR) << "getDiskStats failed with result " << toString(result)
                                   << " and size " << halStats.size();
diff --git a/storaged/storaged_info.cpp b/storaged/storaged_info.cpp
index 5605f66..8c0b3d1 100644
--- a/storaged/storaged_info.cpp
+++ b/storaged/storaged_info.cpp
@@ -370,8 +370,12 @@
 
 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.";
+            return;
+        }
         if (result != Result::SUCCESS || halInfos.size() == 0) {
-            LOG_TO(SYSTEM, DEBUG) << "getStorageInfo failed with result " << toString(result)
+            LOG_TO(SYSTEM, ERROR) << "getStorageInfo failed with result " << toString(result)
                                   << " and size " << halInfos.size();
             return;
         }
@@ -380,7 +384,7 @@
     });
 
     if (!ret.isOk()) {
-        LOG_TO(SYSTEM, DEBUG) << "getStorageInfo failed with " << ret.description();
+        LOG_TO(SYSTEM, ERROR) << "getStorageInfo failed with " << ret.description();
     }
 }
 
diff --git a/trusty/keymaster/3.0/android.hardware.keymaster@3.0-service.trusty.rc b/trusty/keymaster/3.0/android.hardware.keymaster@3.0-service.trusty.rc
index e9d3054..503f3de 100644
--- a/trusty/keymaster/3.0/android.hardware.keymaster@3.0-service.trusty.rc
+++ b/trusty/keymaster/3.0/android.hardware.keymaster@3.0-service.trusty.rc
@@ -1,4 +1,4 @@
 service vendor.keymaster-3-0 /vendor/bin/hw/android.hardware.keymaster@3.0-service.trusty
     class early_hal
     user nobody
-    group system drmrpc
+    group drmrpc
diff --git a/trusty/keymaster/include/trusty_keymaster/legacy/trusty_keymaster_device.h b/trusty/keymaster/include/trusty_keymaster/legacy/trusty_keymaster_device.h
index 5a80795..a483c0d 100644
--- a/trusty/keymaster/include/trusty_keymaster/legacy/trusty_keymaster_device.h
+++ b/trusty/keymaster/include/trusty_keymaster/legacy/trusty_keymaster_device.h
@@ -80,6 +80,8 @@
                              const keymaster_blob_t* input, const keymaster_blob_t* signature,
                              keymaster_key_param_set_t* out_params, keymaster_blob_t* output);
     keymaster_error_t abort(keymaster_operation_handle_t operation_handle);
+    keymaster_error_t delete_key(const keymaster_key_blob_t* key);
+    keymaster_error_t delete_all_keys();
 
   private:
     keymaster_error_t Send(uint32_t command, const Serializable& request,
diff --git a/trusty/keymaster/legacy/trusty_keymaster_device.cpp b/trusty/keymaster/legacy/trusty_keymaster_device.cpp
index ea00a92..88c3e7b 100644
--- a/trusty/keymaster/legacy/trusty_keymaster_device.cpp
+++ b/trusty/keymaster/legacy/trusty_keymaster_device.cpp
@@ -70,8 +70,8 @@
     device_.export_key = export_key;
     device_.attest_key = attest_key;
     device_.upgrade_key = upgrade_key;
-    device_.delete_key = nullptr;
-    device_.delete_all_keys = nullptr;
+    device_.delete_key = delete_key;
+    device_.delete_all_keys = delete_all_keys;
     device_.begin = begin;
     device_.update = update;
     device_.finish = finish;
@@ -122,10 +122,10 @@
 void AddClientAndAppData(const keymaster_blob_t* client_id, const keymaster_blob_t* app_data,
                          RequestType* request) {
     request->additional_params.Clear();
-    if (client_id) {
+    if (client_id && client_id->data_length > 0) {
         request->additional_params.push_back(TAG_APPLICATION_ID, *client_id);
     }
-    if (app_data) {
+    if (app_data && app_data->data_length > 0) {
         request->additional_params.push_back(TAG_APPLICATION_DATA, *app_data);
     }
 }
@@ -606,6 +606,34 @@
     return trusty_keymaster_send(KM_ABORT_OPERATION, request, &response);
 }
 
+keymaster_error_t TrustyKeymasterDevice::delete_key(const keymaster_key_blob_t* key) {
+    ALOGD("Device received delete_key");
+
+    if (error_ != KM_ERROR_OK) {
+        return error_;
+    }
+
+    if (!key || !key->key_material)
+        return KM_ERROR_UNEXPECTED_NULL_POINTER;
+
+    DeleteKeyRequest request(message_version_);
+    request.SetKeyMaterial(*key);
+    DeleteKeyResponse response(message_version_);
+    return trusty_keymaster_send(KM_DELETE_KEY, request, &response);
+}
+
+keymaster_error_t TrustyKeymasterDevice::delete_all_keys() {
+    ALOGD("Device received delete_all_key");
+
+    if (error_ != KM_ERROR_OK) {
+        return error_;
+    }
+
+    DeleteAllKeysRequest request(message_version_);
+    DeleteAllKeysResponse response(message_version_);
+    return trusty_keymaster_send(KM_DELETE_ALL_KEYS, request, &response);
+}
+
 hw_device_t* TrustyKeymasterDevice::hw_device() {
     return &device_.common;
 }
@@ -719,4 +747,15 @@
     return convert_device(dev)->abort(operation_handle);
 }
 
+/* static */
+keymaster_error_t TrustyKeymasterDevice::delete_key(const keymaster2_device_t* dev,
+                                               const keymaster_key_blob_t* key) {
+   return convert_device(dev)->delete_key(key);
+}
+
+/* static */
+keymaster_error_t TrustyKeymasterDevice::delete_all_keys(const keymaster2_device_t* dev) {
+   return convert_device(dev)->delete_all_keys();
+}
+
 }  // namespace keymaster