diff --git a/adb/commandline.cpp b/adb/commandline.cpp
index 45c6142..b18d574 100644
--- a/adb/commandline.cpp
+++ b/adb/commandline.cpp
@@ -65,6 +65,9 @@
 static auto& gProductOutPath = *new std::string();
 extern int gListenAll;
 
+static constexpr char BUGZ_OK_PREFIX[] = "OK:";
+static constexpr char BUGZ_FAIL_PREFIX[] = "FAIL:";
+
 static std::string product_file(const char *extra) {
     if (gProductOutPath.empty()) {
         fprintf(stderr, "adb: Product directory not specified; "
@@ -157,7 +160,7 @@
         "                                 (-r: replace existing application)\n"
         "                                 (-t: allow test packages)\n"
         "                                 (-s: install application on sdcard)\n"
-        "                                 (-d: allow version code downgrade)\n"
+        "                                 (-d: allow version code downgrade (debuggable packages only))\n"
         "                                 (-g: grant all runtime permissions)\n"
         "  adb install-multiple [-lrtsdpg] <file...>\n"
         "                               - push this package file to the device and install it\n"
@@ -165,12 +168,12 @@
         "                                 (-r: replace existing application)\n"
         "                                 (-t: allow test packages)\n"
         "                                 (-s: install application on sdcard)\n"
-        "                                 (-d: allow version code downgrade)\n"
+        "                                 (-d: allow version code downgrade (debuggable packages only))\n"
         "                                 (-p: partial application install)\n"
         "                                 (-g: grant all runtime permissions)\n"
         "  adb uninstall [-k] <package> - remove this app package from the device\n"
         "                                 ('-k' means keep the data and cache directories)\n"
-        "  adb bugreport                - return all information from the device\n"
+        "  adb bugreport [<zip_file>]   - return all information from the device\n"
         "                                 that should be included in a bug report.\n"
         "\n"
         "  adb backup [-f <file>] [-apk|-noapk] [-obb|-noobb] [-shared|-noshared] [-all] [-system|-nosystem] [<packages...>]\n"
@@ -288,7 +291,8 @@
 // this expects that incoming data will use the shell protocol, in which case
 // stdout/stderr are routed independently and the remote exit code will be
 // returned.
-static int read_and_dump(int fd, bool use_shell_protocol=false) {
+// if |output| is non-null, stdout will be appended to it instead.
+static int read_and_dump(int fd, bool use_shell_protocol=false, std::string* output=nullptr) {
     int exit_code = 0;
     std::unique_ptr<ShellProtocol> protocol;
     int length = 0;
@@ -333,8 +337,12 @@
             }
         }
 
-        fwrite(buffer_ptr, 1, length, outfile);
-        fflush(outfile);
+        if (output == nullptr) {
+            fwrite(buffer_ptr, 1, length, outfile);
+            fflush(outfile);
+        } else {
+            output->append(buffer_ptr, length);
+        }
     }
 
     return exit_code;
@@ -1114,7 +1122,8 @@
 // resulting output.
 static int send_shell_command(TransportType transport_type, const char* serial,
                               const std::string& command,
-                              bool disable_shell_protocol) {
+                              bool disable_shell_protocol,
+                              std::string* output=nullptr) {
     int fd;
     bool use_shell_protocol = false;
 
@@ -1149,7 +1158,7 @@
         }
     }
 
-    int exit_code = read_and_dump(fd, use_shell_protocol);
+    int exit_code = read_and_dump(fd, use_shell_protocol, output);
 
     if (adb_close(fd) < 0) {
         PLOG(ERROR) << "failure closing FD " << fd;
@@ -1158,6 +1167,40 @@
     return exit_code;
 }
 
+static int bugreport(TransportType transport_type, const char* serial, int argc,
+                     const char** argv) {
+    // No need for shell protocol with bugreport, always disable for simplicity.
+    if (argc == 1) return send_shell_command(transport_type, serial, "bugreport", true);
+    if (argc != 2) return usage();
+
+    // Zipped bugreport option - will call 'bugreportz', which prints the location of the generated
+    // file, then pull it to the destination file provided by the user.
+    const char* dest_file = argv[1];
+    std::string output;
+
+    int status = send_shell_command(transport_type, serial, "bugreportz", true, &output);
+    if (status != 0 || output.empty()) return status;
+    output = android::base::Trim(output);
+
+    if (android::base::StartsWith(output, BUGZ_OK_PREFIX)) {
+        const char* zip_file = &output[strlen(BUGZ_OK_PREFIX)];
+        std::vector<const char*> srcs{zip_file};
+        status = do_sync_pull(srcs, dest_file, true, dest_file) ? 0 : 1;
+        if (status != 0) {
+            fprintf(stderr, "Could not copy file '%s' to '%s'\n", zip_file, dest_file);
+        }
+        return status;
+    }
+    if (android::base::StartsWith(output, BUGZ_FAIL_PREFIX)) {
+        const char* error_message = &output[strlen(BUGZ_FAIL_PREFIX)];
+        fprintf(stderr, "device failed to take a zipped bugreport: %s\n", error_message);
+        return -1;
+    }
+    fprintf(stderr, "unexpected string (%s) returned by bugreportz, "
+            "device probably does not support -z option\n", output.c_str());
+    return -1;
+}
+
 static int logcat(TransportType transport, const char* serial, int argc, const char** argv) {
     char* log_tags = getenv("ANDROID_LOG_TAGS");
     std::string quoted = escape_arg(log_tags == nullptr ? "" : log_tags);
@@ -1692,12 +1735,8 @@
     } else if (!strcmp(argv[0], "root") || !strcmp(argv[0], "unroot")) {
         return adb_root(argv[0]) ? 0 : 1;
     } else if (!strcmp(argv[0], "bugreport")) {
-        if (argc != 1) return usage();
-        // No need for shell protocol with bugreport, always disable for
-        // simplicity.
-        return send_shell_command(transport_type, serial, "bugreport", true);
-    }
-    else if (!strcmp(argv[0], "forward") || !strcmp(argv[0], "reverse")) {
+        return bugreport(transport_type, serial, argc, argv);
+    } else if (!strcmp(argv[0], "forward") || !strcmp(argv[0], "reverse")) {
         bool reverse = !strcmp(argv[0], "reverse");
         ++argv;
         --argc;
diff --git a/adb/file_sync_client.cpp b/adb/file_sync_client.cpp
index 6a9e163..651e8ca 100644
--- a/adb/file_sync_client.cpp
+++ b/adb/file_sync_client.cpp
@@ -518,7 +518,8 @@
     return sc.CopyDone(lpath, rpath);
 }
 
-static bool sync_recv(SyncConnection& sc, const char* rpath, const char* lpath) {
+static bool sync_recv(SyncConnection& sc, const char* rpath, const char* lpath,
+                      const char* name=nullptr) {
     unsigned size = 0;
     if (!sync_stat(sc, rpath, nullptr, nullptr, &size)) return false;
 
@@ -574,7 +575,7 @@
 
         bytes_copied += msg.data.size;
 
-        sc.ReportProgress(rpath, bytes_copied, size);
+        sc.ReportProgress(name != nullptr ? name : rpath, bytes_copied, size);
     }
 
     adb_close(lfd);
@@ -927,7 +928,7 @@
 }
 
 bool do_sync_pull(const std::vector<const char*>& srcs, const char* dst,
-                  bool copy_attrs) {
+                  bool copy_attrs, const char* name) {
     SyncConnection sc;
     if (!sc.IsValid()) return false;
 
@@ -1022,7 +1023,7 @@
         }
 
         sc.SetExpectedTotalBytes(src_size);
-        if (!sync_recv(sc, src_path, dst_path)) {
+        if (!sync_recv(sc, src_path, dst_path, name)) {
             success = false;
             continue;
         }
diff --git a/adb/file_sync_service.h b/adb/file_sync_service.h
index 460e9dc..0e25974 100644
--- a/adb/file_sync_service.h
+++ b/adb/file_sync_service.h
@@ -67,7 +67,7 @@
 bool do_sync_ls(const char* path);
 bool do_sync_push(const std::vector<const char*>& srcs, const char* dst);
 bool do_sync_pull(const std::vector<const char*>& srcs, const char* dst,
-                  bool copy_attrs);
+                  bool copy_attrs, const char* name=nullptr);
 
 bool do_sync_sync(const std::string& lpath, const std::string& rpath, bool list_only);
 
diff --git a/adb/transport.cpp b/adb/transport.cpp
index 55082a5..c31f655 100644
--- a/adb/transport.cpp
+++ b/adb/transport.cpp
@@ -784,9 +784,7 @@
     // Local static allocation to avoid global non-POD variables.
     static const FeatureSet* features = new FeatureSet{
         kFeatureShell2,
-        // Internal master has 'cmd'. AOSP master doesn't.
-        // kFeatureCmd
-
+        kFeatureCmd
         // Increment ADB_SERVER_VERSION whenever the feature list changes to
         // make sure that the adb client and server features stay in sync
         // (http://b/24370690).
diff --git a/debuggerd/debuggerd.cpp b/debuggerd/debuggerd.cpp
index 258bd76..0a43622 100644
--- a/debuggerd/debuggerd.cpp
+++ b/debuggerd/debuggerd.cpp
@@ -454,6 +454,7 @@
 #ifdef SIGSTKFLT
       case SIGSTKFLT:
 #endif
+      case SIGSYS:
       case SIGTRAP:
         ALOGV("stopped -- fatal signal\n");
         *crash_signal = signal;
diff --git a/fastboot/fastboot.cpp b/fastboot/fastboot.cpp
index fa8f19a..3f820b6 100644
--- a/fastboot/fastboot.cpp
+++ b/fastboot/fastboot.cpp
@@ -85,6 +85,8 @@
 static unsigned second_offset  = 0x00f00000;
 static unsigned tags_offset    = 0x00000100;
 
+static const std::string convert_fbe_marker_filename("convert_fbe");
+
 enum fb_buffer_type {
     FB_BUFFER,
     FB_BUFFER_SPARSE,
@@ -386,11 +388,17 @@
             "                                           given by --slot. If slots are not\n"
             "                                           supported, this does nothing. This will\n"
             "                                           run after all non-reboot commands.\n"
+#if !defined(_WIN32)
+            "  --wipe-and-use-fbe                       On devices which support it,\n"
+            "                                           erase userdata and cache, and\n"
+            "                                           enable file-based encryption\n"
+#endif
             "  --unbuffered                             Do not buffer input or output.\n"
             "  --version                                Display version.\n"
             "  -h, --help                               show this message.\n"
         );
 }
+
 static void* load_bootable_image(const char* kernel, const char* ramdisk,
                                  const char* secondstage, int64_t* sz,
                                  const char* cmdline) {
@@ -510,8 +518,60 @@
 
 #define tmpfile win32_tmpfile
 
+static std::string make_temporary_directory() {
+    fprintf(stderr, "make_temporary_directory not supported under Windows, sorry!");
+    return "";
+}
+
+#else
+
+static std::string make_temporary_directory() {
+    const char *tmpdir = getenv("TMPDIR");
+    if (tmpdir == nullptr) {
+        tmpdir = P_tmpdir;
+    }
+    std::string result = std::string(tmpdir) + "/fastboot_userdata_XXXXXX";
+    if (mkdtemp(&result[0]) == NULL) {
+        fprintf(stderr, "Unable to create temporary directory: %s\n",
+            strerror(errno));
+        return "";
+    }
+    return result;
+}
+
 #endif
 
+static std::string create_fbemarker_tmpdir() {
+    std::string dir = make_temporary_directory();
+    if (dir.empty()) {
+        fprintf(stderr, "Unable to create local temp directory for FBE marker\n");
+        return "";
+    }
+    std::string marker_file = dir + "/" + convert_fbe_marker_filename;
+    int fd = open(marker_file.c_str(), O_CREAT | O_WRONLY | O_CLOEXEC, 0666);
+    if (fd == -1) {
+        fprintf(stderr, "Unable to create FBE marker file %s locally: %d, %s\n",
+            marker_file.c_str(), errno, strerror(errno));
+        return "";
+    }
+    close(fd);
+    return dir;
+}
+
+static void delete_fbemarker_tmpdir(const std::string& dir) {
+    std::string marker_file = dir + "/" + convert_fbe_marker_filename;
+    if (unlink(marker_file.c_str()) == -1) {
+        fprintf(stderr, "Unable to delete FBE marker file %s locally: %d, %s\n",
+            marker_file.c_str(), errno, strerror(errno));
+        return;
+    }
+    if (rmdir(dir.c_str()) == -1) {
+        fprintf(stderr, "Unable to delete FBE marker directory %s locally: %d, %s\n",
+            dir.c_str(), errno, strerror(errno));
+        return;
+    }
+}
+
 static int unzip_to_file(ZipArchiveHandle zip, char* entry_name) {
     FILE* fp = tmpfile();
     if (fp == nullptr) {
@@ -1097,7 +1157,8 @@
 
 static void fb_perform_format(Transport* transport,
                               const char* partition, int skip_if_not_supported,
-                              const char* type_override, const char* size_override) {
+                              const char* type_override, const char* size_override,
+                              const std::string& initial_dir) {
     std::string partition_type, partition_size;
 
     struct fastboot_buffer buf;
@@ -1161,7 +1222,7 @@
     }
 
     fd = fileno(tmpfile());
-    if (fs_generator_generate(gen, fd, size)) {
+    if (fs_generator_generate(gen, fd, size, initial_dir)) {
         fprintf(stderr, "Cannot generate image: %s\n", strerror(errno));
         close(fd);
         return;
@@ -1190,6 +1251,7 @@
     bool wants_reboot_bootloader = false;
     bool wants_set_active = false;
     bool erase_first = true;
+    bool set_fbe_marker = false;
     void *data;
     int64_t sz;
     int longindex;
@@ -1212,6 +1274,9 @@
         {"slot", required_argument, 0, 0},
         {"set_active", optional_argument, 0, 'a'},
         {"set-active", optional_argument, 0, 'a'},
+#if !defined(_WIN32)
+        {"wipe-and-use-fbe", no_argument, 0, 0},
+#endif
         {0, 0, 0, 0}
     };
 
@@ -1293,6 +1358,15 @@
                 return 0;
             } else if (strcmp("slot", longopts[longindex].name) == 0) {
                 slot_override = std::string(optarg);
+#if !defined(_WIN32)
+            } else if (strcmp("wipe-and-use-fbe", longopts[longindex].name) == 0) {
+                wants_wipe = true;
+                set_fbe_marker = true;
+#endif
+            } else {
+                fprintf(stderr, "Internal error in options processing for %s\n",
+                    longopts[longindex].name);
+                return 1;
             }
             break;
         default:
@@ -1390,7 +1464,8 @@
                 if (erase_first && needs_erase(transport, partition.c_str())) {
                     fb_queue_erase(partition.c_str());
                 }
-                fb_perform_format(transport, partition.c_str(), 0, type_override, size_override);
+                fb_perform_format(transport, partition.c_str(), 0,
+                    type_override, size_override, "");
             };
             do_for_partitions(transport, argv[1], slot_override.c_str(), format, true);
             skip(2);
@@ -1525,13 +1600,23 @@
     if (wants_wipe) {
         fprintf(stderr, "wiping userdata...\n");
         fb_queue_erase("userdata");
-        fb_perform_format(transport, "userdata", 1, nullptr, nullptr);
+        if (set_fbe_marker) {
+            fprintf(stderr, "setting FBE marker...\n");
+            std::string initial_userdata_dir = create_fbemarker_tmpdir();
+            if (initial_userdata_dir.empty()) {
+                return 1;
+            }
+            fb_perform_format(transport, "userdata", 1, nullptr, nullptr, initial_userdata_dir);
+            delete_fbemarker_tmpdir(initial_userdata_dir);
+        } else {
+            fb_perform_format(transport, "userdata", 1, nullptr, nullptr, "");
+        }
 
         std::string cache_type;
         if (fb_getvar(transport, "partition-type:cache", &cache_type) && !cache_type.empty()) {
             fprintf(stderr, "wiping cache...\n");
             fb_queue_erase("cache");
-            fb_perform_format(transport, "cache", 1, nullptr, nullptr);
+            fb_perform_format(transport, "cache", 1, nullptr, nullptr, "");
         }
     }
     if (wants_set_active) {
diff --git a/fastboot/fs.cpp b/fastboot/fs.cpp
index 90d8474..8539e23 100644
--- a/fastboot/fs.cpp
+++ b/fastboot/fs.cpp
@@ -1,7 +1,8 @@
+#include "fs.h"
+
 #include "fastboot.h"
 #include "make_ext4fs.h"
 #include "make_f2fs.h"
-#include "fs.h"
 
 #include <errno.h>
 #include <stdio.h>
@@ -13,24 +14,32 @@
 
 #include <sparse/sparse.h>
 
-static int generate_ext4_image(int fd, long long partSize)
+static int generate_ext4_image(int fd, long long partSize, const std::string& initial_dir)
 {
-    make_ext4fs_sparse_fd(fd, partSize, NULL, NULL);
-
+    if (initial_dir.empty()) {
+        make_ext4fs_sparse_fd(fd, partSize, NULL, NULL);
+    } else {
+        make_ext4fs_sparse_fd_directory(fd, partSize, NULL, NULL, initial_dir.c_str());
+    }
     return 0;
 }
 
 #ifdef USE_F2FS
-static int generate_f2fs_image(int fd, long long partSize)
+static int generate_f2fs_image(int fd, long long partSize, const std::string& initial_dir)
 {
+    if (!initial_dir.empty()) {
+        fprintf(stderr, "Unable to set initial directory on F2FS filesystem\n");
+        return -1;
+    }
     return make_f2fs_sparse_fd(fd, partSize, NULL, NULL);
 }
 #endif
 
 static const struct fs_generator {
-
     const char* fs_type;  //must match what fastboot reports for partition type
-    int (*generate)(int fd, long long partSize); //returns 0 or error value
+
+    //returns 0 or error value
+    int (*generate)(int fd, long long partSize, const std::string& initial_dir);
 
 } generators[] = {
     { "ext4", generate_ext4_image},
@@ -48,7 +57,8 @@
     return nullptr;
 }
 
-int fs_generator_generate(const struct fs_generator* gen, int tmpFileNo, long long partSize)
+int fs_generator_generate(const struct fs_generator* gen, int tmpFileNo, long long partSize,
+    const std::string& initial_dir)
 {
-    return gen->generate(tmpFileNo, partSize);
+    return gen->generate(tmpFileNo, partSize, initial_dir);
 }
diff --git a/fastboot/fs.h b/fastboot/fs.h
index 289488b..0a68507 100644
--- a/fastboot/fs.h
+++ b/fastboot/fs.h
@@ -1,11 +1,13 @@
 #ifndef _FS_H_
 #define _FS_H_
 
+#include <string>
 #include <stdint.h>
 
 struct fs_generator;
 
 const struct fs_generator* fs_get_generator(const std::string& fs_type);
-int fs_generator_generate(const struct fs_generator* gen, int tmpFileNo, long long partSize);
+int fs_generator_generate(const struct fs_generator* gen, int tmpFileNo, long long partSize,
+    const std::string& initial_dir);
 
 #endif
diff --git a/fingerprintd/FingerprintDaemonProxy.cpp b/fingerprintd/FingerprintDaemonProxy.cpp
index beb95de..1c7da30 100644
--- a/fingerprintd/FingerprintDaemonProxy.cpp
+++ b/fingerprintd/FingerprintDaemonProxy.cpp
@@ -88,6 +88,16 @@
                     msg->data.removed.finger.fid,
                     msg->data.removed.finger.gid);
             break;
+        case FINGERPRINT_TEMPLATE_ENUMERATING:
+            ALOGD("onEnumerate(fid=%d, gid=%d, rem=%d)",
+                    msg->data.enumerated.finger.fid,
+                    msg->data.enumerated.finger.gid,
+                    msg->data.enumerated.remaining_templates);
+            callback->onEnumerate(device,
+                    msg->data.enumerated.finger.fid,
+                    msg->data.enumerated.finger.gid,
+                    msg->data.enumerated.remaining_templates);
+            break;
         default:
             ALOGE("invalid msg type: %d", msg->type);
             return;
@@ -158,6 +168,11 @@
     return mDevice->remove(mDevice, groupId, fingerId);
 }
 
+int32_t FingerprintDaemonProxy::enumerate() {
+    ALOG(LOG_VERBOSE, LOG_TAG, "enumerate()\n");
+    return mDevice->enumerate(mDevice);
+}
+
 uint64_t FingerprintDaemonProxy::getAuthenticatorId() {
     return mDevice->get_authenticator_id(mDevice);
 }
diff --git a/fingerprintd/FingerprintDaemonProxy.h b/fingerprintd/FingerprintDaemonProxy.h
index 871c0e6..145b4c9 100644
--- a/fingerprintd/FingerprintDaemonProxy.h
+++ b/fingerprintd/FingerprintDaemonProxy.h
@@ -40,6 +40,7 @@
         virtual int32_t authenticate(uint64_t sessionId, uint32_t groupId);
         virtual int32_t stopAuthentication();
         virtual int32_t remove(int32_t fingerId, int32_t groupId);
+        virtual int32_t enumerate();
         virtual uint64_t getAuthenticatorId();
         virtual int32_t setActiveGroup(int32_t groupId, const uint8_t* path, ssize_t pathLen);
         virtual int64_t openHal();
diff --git a/fingerprintd/IFingerprintDaemon.cpp b/fingerprintd/IFingerprintDaemon.cpp
index 7131793..bc4af56 100644
--- a/fingerprintd/IFingerprintDaemon.cpp
+++ b/fingerprintd/IFingerprintDaemon.cpp
@@ -125,6 +125,16 @@
             reply->writeInt32(ret);
             return NO_ERROR;
         }
+        case ENUMERATE: {
+            CHECK_INTERFACE(IFingerprintDaemon, data, reply);
+            if (!checkPermission(HAL_FINGERPRINT_PERMISSION)) {
+                return PERMISSION_DENIED;
+            }
+            const int32_t ret = enumerate();
+            reply->writeNoException();
+            reply->writeInt32(ret);
+            return NO_ERROR;
+        }
         case GET_AUTHENTICATOR_ID: {
             CHECK_INTERFACE(IFingerprintDaemon, data, reply);
             if (!checkPermission(HAL_FINGERPRINT_PERMISSION)) {
diff --git a/fingerprintd/IFingerprintDaemon.h b/fingerprintd/IFingerprintDaemon.h
index 1eb4ac1..23c36ff 100644
--- a/fingerprintd/IFingerprintDaemon.h
+++ b/fingerprintd/IFingerprintDaemon.h
@@ -44,6 +44,7 @@
            CLOSE_HAL = IBinder::FIRST_CALL_TRANSACTION + 9,
            INIT = IBinder::FIRST_CALL_TRANSACTION + 10,
            POST_ENROLL = IBinder::FIRST_CALL_TRANSACTION + 11,
+           ENUMERATE = IBinder::FIRST_CALL_TRANSACTION + 12,
         };
 
         IFingerprintDaemon() { }
@@ -60,6 +61,7 @@
         virtual int32_t authenticate(uint64_t sessionId, uint32_t groupId) = 0;
         virtual int32_t stopAuthentication() = 0;
         virtual int32_t remove(int32_t fingerId, int32_t groupId) = 0;
+        virtual int32_t enumerate() = 0;
         virtual uint64_t getAuthenticatorId() = 0;
         virtual int32_t setActiveGroup(int32_t groupId, const uint8_t* path, ssize_t pathLen) = 0;
         virtual int64_t openHal() = 0;
diff --git a/fingerprintd/IFingerprintDaemonCallback.cpp b/fingerprintd/IFingerprintDaemonCallback.cpp
index 44d8020..19838c9 100644
--- a/fingerprintd/IFingerprintDaemonCallback.cpp
+++ b/fingerprintd/IFingerprintDaemonCallback.cpp
@@ -74,13 +74,13 @@
         return remote()->transact(ON_REMOVED, data, &reply, IBinder::FLAG_ONEWAY);
     }
 
-    virtual status_t onEnumerate(int64_t devId, const int32_t* fpIds, const int32_t* gpIds,
-            int32_t sz) {
+    virtual status_t onEnumerate(int64_t devId, int32_t fpId, int32_t gpId, int32_t rem) {
         Parcel data, reply;
         data.writeInterfaceToken(IFingerprintDaemonCallback::getInterfaceDescriptor());
         data.writeInt64(devId);
-        data.writeInt32Array(sz, fpIds);
-        data.writeInt32Array(sz, gpIds);
+        data.writeInt32(fpId);
+        data.writeInt32(gpId);
+        data.writeInt32(rem);
         return remote()->transact(ON_ENUMERATE, data, &reply, IBinder::FLAG_ONEWAY);
     }
 };
diff --git a/fingerprintd/IFingerprintDaemonCallback.h b/fingerprintd/IFingerprintDaemonCallback.h
index 6e32213..e343cb4 100644
--- a/fingerprintd/IFingerprintDaemonCallback.h
+++ b/fingerprintd/IFingerprintDaemonCallback.h
@@ -44,8 +44,7 @@
         virtual status_t onAuthenticated(int64_t devId, int32_t fingerId, int32_t groupId) = 0;
         virtual status_t onError(int64_t devId, int32_t error) = 0;
         virtual status_t onRemoved(int64_t devId, int32_t fingerId, int32_t groupId) = 0;
-        virtual status_t onEnumerate(int64_t devId, const int32_t* fpIds, const int32_t* gpIds,
-                int32_t sz) = 0;
+        virtual status_t onEnumerate(int64_t devId, int32_t fingerId, int32_t groupId, int32_t rem) = 0;
 
         DECLARE_META_INTERFACE(FingerprintDaemonCallback);
 };
diff --git a/fs_mgr/fs_mgr.c b/fs_mgr/fs_mgr.c
index b3e65cb..9fc5999 100644
--- a/fs_mgr/fs_mgr.c
+++ b/fs_mgr/fs_mgr.c
@@ -98,6 +98,7 @@
     char tmpmnt_opts[64] = "errors=remount-ro";
     char *e2fsck_argv[] = {
         E2FSCK_BIN,
+        "-f",
         "-y",
         blk_device
     };
@@ -436,12 +437,32 @@
     return ret;
 }
 
+static bool needs_block_encryption(const struct fstab_rec* rec)
+{
+    if (device_is_force_encrypted() && fs_mgr_is_encryptable(rec)) return true;
+    if (rec->fs_mgr_flags & MF_FORCECRYPT) return true;
+    if (rec->fs_mgr_flags & MF_CRYPT) {
+        /* Check for existence of convert_fde breadcrumb file */
+        char convert_fde_name[PATH_MAX];
+        snprintf(convert_fde_name, sizeof(convert_fde_name),
+                 "%s/misc/vold/convert_fde", rec->mount_point);
+        if (access(convert_fde_name, F_OK) == 0) return true;
+    }
+    if (rec->fs_mgr_flags & MF_FORCEFDEORFBE) {
+        /* Check for absence of convert_fbe breadcrumb file */
+        char convert_fbe_name[PATH_MAX];
+        snprintf(convert_fbe_name, sizeof(convert_fbe_name),
+                 "%s/convert_fbe", rec->mount_point);
+        if (access(convert_fbe_name, F_OK) != 0) return true;
+    }
+    return false;
+}
+
 // Check to see if a mountable volume has encryption requirements
-static int handle_encryptable(struct fstab *fstab, const struct fstab_rec* rec)
+static int handle_encryptable(const struct fstab_rec* rec)
 {
     /* If this is block encryptable, need to trigger encryption */
-    if (   (rec->fs_mgr_flags & MF_FORCECRYPT)
-        || (device_is_force_encrypted() && fs_mgr_is_encryptable(rec))) {
+    if (needs_block_encryption(rec)) {
         if (umount(rec->mount_point) == 0) {
             return FS_MGR_MNTALL_DEV_NEEDS_ENCRYPTION;
         } else {
@@ -449,48 +470,15 @@
                     rec->mount_point, strerror(errno));
             return FS_MGR_MNTALL_DEV_NOT_ENCRYPTED;
         }
-    }
-
+    } else if (rec->fs_mgr_flags & (MF_FILEENCRYPTION | MF_FORCEFDEORFBE)) {
     // Deal with file level encryption
-    if (rec->fs_mgr_flags & MF_FILEENCRYPTION) {
-        // Default or not yet initialized encryption requires no more work here
-        if (!e4crypt_non_default_key(rec->mount_point)) {
-            INFO("%s is default file encrypted\n", rec->mount_point);
-            return FS_MGR_MNTALL_DEV_DEFAULT_FILE_ENCRYPTED;
-        }
-
-        INFO("%s is non-default file encrypted\n", rec->mount_point);
-
-        // Uses non-default key, so must unmount and set up temp file system
-        if (umount(rec->mount_point)) {
-            ERROR("Failed to umount %s - rebooting\n", rec->mount_point);
-            return FS_MGR_MNTALL_FAIL;
-        }
-
-        if (fs_mgr_do_tmpfs_mount(rec->mount_point) != 0) {
-            ERROR("Failed to mount a tmpfs at %s\n", rec->mount_point);
-            return FS_MGR_MNTALL_FAIL;
-        }
-
-        // Mount data temporarily so we can access unencrypted dir
-        char tmp_mnt[PATH_MAX];
-        strlcpy(tmp_mnt, rec->mount_point, sizeof(tmp_mnt));
-        strlcat(tmp_mnt, "/tmp_mnt", sizeof(tmp_mnt));
-        if (mkdir(tmp_mnt, 0700)) {
-            ERROR("Failed to create temp mount point\n");
-            return FS_MGR_MNTALL_FAIL;
-        }
-
-        if (fs_mgr_do_mount(fstab, rec->mount_point,
-                            rec->blk_device, tmp_mnt)) {
-            ERROR("Error temp mounting encrypted file system\n");
-            return FS_MGR_MNTALL_FAIL;
-        }
-
-        return FS_MGR_MNTALL_DEV_NON_DEFAULT_FILE_ENCRYPTED;
+        INFO("%s is file encrypted\n", rec->mount_point);
+        return FS_MGR_MNTALL_DEV_FILE_ENCRYPTED;
+    } else if (fs_mgr_is_encryptable(rec)) {
+        return FS_MGR_MNTALL_DEV_NOT_ENCRYPTED;
+    } else {
+        return FS_MGR_MNTALL_DEV_NOT_ENCRYPTABLE;
     }
-
-    return FS_MGR_MNTALL_DEV_NOT_ENCRYPTED;
 }
 
 /* When multiple fstab records share the same mount_point, it will
@@ -501,7 +489,7 @@
 int fs_mgr_mount_all(struct fstab *fstab)
 {
     int i = 0;
-    int encryptable = FS_MGR_MNTALL_DEV_NOT_ENCRYPTED;
+    int encryptable = FS_MGR_MNTALL_DEV_NOT_ENCRYPTABLE;
     int error_count = 0;
     int mret = -1;
     int mount_errno = 0;
@@ -565,15 +553,15 @@
 
         /* Deal with encryptability. */
         if (!mret) {
-            int status = handle_encryptable(fstab, &fstab->recs[attempted_idx]);
+            int status = handle_encryptable(&fstab->recs[attempted_idx]);
 
             if (status == FS_MGR_MNTALL_FAIL) {
                 /* Fatal error - no point continuing */
                 return status;
             }
 
-            if (status != FS_MGR_MNTALL_DEV_NOT_ENCRYPTED) {
-                if (encryptable != FS_MGR_MNTALL_DEV_NOT_ENCRYPTED) {
+            if (status != FS_MGR_MNTALL_DEV_NOT_ENCRYPTABLE) {
+                if (encryptable != FS_MGR_MNTALL_DEV_NOT_ENCRYPTABLE) {
                     // Log and continue
                     ERROR("Only one encryptable/encrypted partition supported\n");
                 }
@@ -885,7 +873,8 @@
         if (fstab->recs[i].fs_mgr_flags & MF_VOLDMANAGED) {
             continue;
         }
-        if (!(fstab->recs[i].fs_mgr_flags & (MF_CRYPT | MF_FORCECRYPT))) {
+        if (!(fstab->recs[i].fs_mgr_flags
+              & (MF_CRYPT | MF_FORCECRYPT | MF_FORCEFDEORFBE))) {
             continue;
         }
 
diff --git a/fs_mgr/fs_mgr_format.c b/fs_mgr/fs_mgr_format.c
index c63ff67..0b52e00 100644
--- a/fs_mgr/fs_mgr_format.c
+++ b/fs_mgr/fs_mgr_format.c
@@ -52,7 +52,7 @@
     info.len = (off64_t)dev_sz;
 
     /* Use make_ext4fs_internal to avoid wiping an already-wiped partition. */
-    rc = make_ext4fs_internal(fd, NULL, NULL, fs_mnt_point, 0, 0, 0, 0, 0, 0, 0, 0, 0, NULL);
+    rc = make_ext4fs_internal(fd, NULL, NULL, fs_mnt_point, 0, 0, 0, 0, 0, 0, 0, 0, 0, NULL, NULL, NULL);
     if (rc) {
         ERROR("make_ext4fs returned %d.\n", rc);
     }
diff --git a/fs_mgr/fs_mgr_fstab.c b/fs_mgr/fs_mgr_fstab.c
index 5b92db7..6d44e06 100644
--- a/fs_mgr/fs_mgr_fstab.c
+++ b/fs_mgr/fs_mgr_fstab.c
@@ -64,6 +64,7 @@
     { "encryptable=",MF_CRYPT },
     { "forceencrypt=",MF_FORCECRYPT },
     { "fileencryption",MF_FILEENCRYPTION },
+    { "forcefdeorfbe=",MF_FORCEFDEORFBE },
     { "nonremovable",MF_NONREMOVABLE },
     { "voldmanaged=",MF_VOLDMANAGED},
     { "length=",     MF_LENGTH },
@@ -141,6 +142,11 @@
                      * location of the keys.  Get it and return it.
                      */
                     flag_vals->key_loc = strdup(strchr(p, '=') + 1);
+                } else if ((fl[i].flag == MF_FORCEFDEORFBE) && flag_vals) {
+                    /* The forcefdeorfbe flag is followed by an = and the
+                     * location of the keys.  Get it and return it.
+                     */
+                    flag_vals->key_loc = strdup(strchr(p, '=') + 1);
                 } else if ((fl[i].flag == MF_LENGTH) && flag_vals) {
                     /* The length flag is followed by an = and the
                      * size of the partition.  Get it and return it.
@@ -465,7 +471,7 @@
 
 int fs_mgr_is_encryptable(const struct fstab_rec *fstab)
 {
-    return fstab->fs_mgr_flags & (MF_CRYPT | MF_FORCECRYPT);
+    return fstab->fs_mgr_flags & (MF_CRYPT | MF_FORCECRYPT | MF_FORCEFDEORFBE);
 }
 
 int fs_mgr_is_file_encrypted(const struct fstab_rec *fstab)
@@ -473,6 +479,11 @@
     return fstab->fs_mgr_flags & MF_FILEENCRYPTION;
 }
 
+int fs_mgr_is_convertible_to_fbe(const struct fstab_rec *fstab)
+{
+    return fstab->fs_mgr_flags & MF_FORCEFDEORFBE;
+}
+
 int fs_mgr_is_noemulatedsd(const struct fstab_rec *fstab)
 {
     return fstab->fs_mgr_flags & MF_NOEMULATEDSD;
diff --git a/fs_mgr/fs_mgr_priv.h b/fs_mgr/fs_mgr_priv.h
index 775f36d..46975f1 100644
--- a/fs_mgr/fs_mgr_priv.h
+++ b/fs_mgr/fs_mgr_priv.h
@@ -82,6 +82,7 @@
 #define MF_FILEENCRYPTION 0x2000
 #define MF_FORMATTABLE  0x4000
 #define MF_SLOTSELECT   0x8000
+#define MF_FORCEFDEORFBE 0x10000
 #define MF_NOFAIL       0x40000
 
 #define DM_BUF_SIZE 4096
diff --git a/fs_mgr/include/fs_mgr.h b/fs_mgr/include/fs_mgr.h
index c5e1f32..6f4580e 100644
--- a/fs_mgr/include/fs_mgr.h
+++ b/fs_mgr/include/fs_mgr.h
@@ -74,12 +74,12 @@
 struct fstab *fs_mgr_read_fstab(const char *fstab_path);
 void fs_mgr_free_fstab(struct fstab *fstab);
 
-#define FS_MGR_MNTALL_DEV_NON_DEFAULT_FILE_ENCRYPTED 5
-#define FS_MGR_MNTALL_DEV_DEFAULT_FILE_ENCRYPTED 4
-#define FS_MGR_MNTALL_DEV_NEEDS_RECOVERY 3
-#define FS_MGR_MNTALL_DEV_NEEDS_ENCRYPTION 2
-#define FS_MGR_MNTALL_DEV_MIGHT_BE_ENCRYPTED 1
-#define FS_MGR_MNTALL_DEV_NOT_ENCRYPTED 0
+#define FS_MGR_MNTALL_DEV_FILE_ENCRYPTED 5
+#define FS_MGR_MNTALL_DEV_NEEDS_RECOVERY 4
+#define FS_MGR_MNTALL_DEV_NEEDS_ENCRYPTION 3
+#define FS_MGR_MNTALL_DEV_MIGHT_BE_ENCRYPTED 2
+#define FS_MGR_MNTALL_DEV_NOT_ENCRYPTED 1
+#define FS_MGR_MNTALL_DEV_NOT_ENCRYPTABLE 0
 #define FS_MGR_MNTALL_FAIL -1
 int fs_mgr_mount_all(struct fstab *fstab);
 
@@ -102,6 +102,7 @@
 int fs_mgr_is_verified(const struct fstab_rec *fstab);
 int fs_mgr_is_encryptable(const struct fstab_rec *fstab);
 int fs_mgr_is_file_encrypted(const struct fstab_rec *fstab);
+int fs_mgr_is_convertible_to_fbe(const struct fstab_rec *fstab);
 int fs_mgr_is_noemulatedsd(const struct fstab_rec *fstab);
 int fs_mgr_is_notrim(struct fstab_rec *fstab);
 int fs_mgr_is_formattable(struct fstab_rec *fstab);
diff --git a/gatekeeperd/gatekeeperd.rc b/gatekeeperd/gatekeeperd.rc
index 3f1b92d..8b126d5 100644
--- a/gatekeeperd/gatekeeperd.rc
+++ b/gatekeeperd/gatekeeperd.rc
@@ -1,3 +1,4 @@
 service gatekeeperd /system/bin/gatekeeperd /data/misc/gatekeeper
     class late_start
     user system
+    writepid /dev/cpuset/system-background/tasks
diff --git a/gatekeeperd/tests/gatekeeper_test.cpp b/gatekeeperd/tests/gatekeeper_test.cpp
index c504f92..47a8bfa 100644
--- a/gatekeeperd/tests/gatekeeper_test.cpp
+++ b/gatekeeperd/tests/gatekeeper_test.cpp
@@ -18,9 +18,8 @@
 #include <iostream>
 
 #include <gtest/gtest.h>
-#include <UniquePtr.h>
-
 #include <hardware/hw_auth_token.h>
+#include <UniquePtr.h>
 
 #include "../SoftGateKeeper.h"
 
diff --git a/healthd/BatteryMonitor.cpp b/healthd/BatteryMonitor.cpp
index 69647de..d287d10 100644
--- a/healthd/BatteryMonitor.cpp
+++ b/healthd/BatteryMonitor.cpp
@@ -40,6 +40,8 @@
 #define FAKE_BATTERY_CAPACITY 42
 #define FAKE_BATTERY_TEMPERATURE 424
 #define ALWAYS_PLUGGED_CAPACITY 100
+#define MILLION 1.0e6
+#define DEFAULT_VBUS_VOLTAGE 5000000
 
 namespace android {
 
@@ -62,6 +64,7 @@
     props->chargerUsbOnline = false;
     props->chargerWirelessOnline = false;
     props->maxChargingCurrent = 0;
+    props->maxChargingVoltage = 0;
     props->batteryStatus = BATTERY_STATUS_UNKNOWN;
     props->batteryHealth = BATTERY_HEALTH_UNKNOWN;
     props->batteryPresent = false;
@@ -71,6 +74,7 @@
     props->batteryCurrent = 0;
     props->batteryCycleCount = 0;
     props->batteryFullCharge = 0;
+    props->batteryChargeCounter = 0;
     props->batteryTechnology.clear();
 }
 
@@ -228,6 +232,9 @@
     if (!mHealthdConfig->batteryCycleCountPath.isEmpty())
         props.batteryCycleCount = getIntField(mHealthdConfig->batteryCycleCountPath);
 
+    if (!mHealthdConfig->batteryChargeCounterPath.isEmpty())
+        props.batteryChargeCounter = getIntField(mHealthdConfig->batteryChargeCounterPath);
+
     props.batteryTemperature = mBatteryFixedTemperature ?
         mBatteryFixedTemperature :
         getIntField(mHealthdConfig->batteryTemperaturePath);
@@ -255,6 +262,7 @@
         props.batteryTechnology = String8(buf);
 
     unsigned int i;
+    double MaxPower = 0;
 
     for (i = 0; i < mChargerNames.size(); i++) {
         String8 path;
@@ -283,11 +291,23 @@
                 path.clear();
                 path.appendFormat("%s/%s/current_max", POWER_SUPPLY_SYSFS_PATH,
                                   mChargerNames[i].string());
-                if (access(path.string(), R_OK) == 0) {
-                    int maxChargingCurrent = getIntField(path);
-                    if (props.maxChargingCurrent < maxChargingCurrent) {
-                        props.maxChargingCurrent = maxChargingCurrent;
-                    }
+                int ChargingCurrent =
+                    (access(path.string(), R_OK) == 0) ? getIntField(path) : 0;
+
+                path.clear();
+                path.appendFormat("%s/%s/voltage_max", POWER_SUPPLY_SYSFS_PATH,
+                                  mChargerNames[i].string());
+
+                int ChargingVoltage =
+                    (access(path.string(), R_OK) == 0) ? getIntField(path) :
+                    DEFAULT_VBUS_VOLTAGE;
+
+                double power = ((double)ChargingCurrent / MILLION) *
+                        ((double)ChargingVoltage / MILLION);
+                if (MaxPower < power) {
+                    props.maxChargingCurrent = ChargingCurrent;
+                    props.maxChargingVoltage = ChargingVoltage;
+                    MaxPower = power;
                 }
             }
         }
@@ -416,9 +436,10 @@
     int v;
     char vs[128];
 
-    snprintf(vs, sizeof(vs), "ac: %d usb: %d wireless: %d current_max: %d\n",
+    snprintf(vs, sizeof(vs), "ac: %d usb: %d wireless: %d current_max: %d voltage_max: %d\n",
              props.chargerAcOnline, props.chargerUsbOnline,
-             props.chargerWirelessOnline, props.maxChargingCurrent);
+             props.chargerWirelessOnline, props.maxChargingCurrent,
+             props.maxChargingVoltage);
     write(fd, vs, strlen(vs));
     snprintf(vs, sizeof(vs), "status: %d health: %d present: %d\n",
              props.batteryStatus, props.batteryHealth, props.batteryPresent);
@@ -637,7 +658,7 @@
             KLOG_WARNING(LOG_TAG, "BatteryTemperaturePath not found\n");
         if (mHealthdConfig->batteryTechnologyPath.isEmpty())
             KLOG_WARNING(LOG_TAG, "BatteryTechnologyPath not found\n");
-	if (mHealthdConfig->batteryCurrentNowPath.isEmpty())
+        if (mHealthdConfig->batteryCurrentNowPath.isEmpty())
             KLOG_WARNING(LOG_TAG, "BatteryCurrentNowPath not found\n");
         if (mHealthdConfig->batteryFullChargePath.isEmpty())
             KLOG_WARNING(LOG_TAG, "BatteryFullChargePath not found\n");
diff --git a/include/cutils/fs.h b/include/cutils/fs.h
index 70f0b92..be9e819 100644
--- a/include/cutils/fs.h
+++ b/include/cutils/fs.h
@@ -40,11 +40,18 @@
 #endif
 
 /*
- * Ensure that directory exists with given mode and owners.
+ * Ensure that directory exists with given mode and owners.  If it exists
+ * with a different mode or owners, they are fixed to match the given values.
  */
 extern int fs_prepare_dir(const char* path, mode_t mode, uid_t uid, gid_t gid);
 
 /*
+ * Ensure that directory exists with given mode and owners.  If it exists
+ * with different owners, they are not fixed and -1 is returned.
+ */
+extern int fs_prepare_dir_strict(const char* path, mode_t mode, uid_t uid, gid_t gid);
+
+/*
  * Read single plaintext integer from given file, correctly handling files
  * partially written with fs_write_atomic_int().
  */
diff --git a/include/cutils/multiuser.h b/include/cutils/multiuser.h
index 635ddb1..7e7f815 100644
--- a/include/cutils/multiuser.h
+++ b/include/cutils/multiuser.h
@@ -26,6 +26,8 @@
 // NOTE: keep in sync with android.os.UserId
 
 #define MULTIUSER_APP_PER_USER_RANGE 100000
+#define MULTIUSER_FIRST_SHARED_APPLICATION_GID 50000
+#define MULTIUSER_FIRST_APPLICATION_UID 10000
 
 typedef uid_t userid_t;
 typedef uid_t appid_t;
@@ -33,6 +35,7 @@
 extern userid_t multiuser_get_user_id(uid_t uid);
 extern appid_t multiuser_get_app_id(uid_t uid);
 extern uid_t multiuser_get_uid(userid_t userId, appid_t appId);
+extern appid_t multiuser_get_shared_app_gid(uid_t uid);
 
 #ifdef __cplusplus
 }
diff --git a/include/cutils/sched_policy.h b/include/cutils/sched_policy.h
index 6a8d570..591bd44 100644
--- a/include/cutils/sched_policy.h
+++ b/include/cutils/sched_policy.h
@@ -29,6 +29,7 @@
     SP_SYSTEM     = 2,  // can't be used with set_sched_policy()
     SP_AUDIO_APP  = 3,
     SP_AUDIO_SYS  = 4,
+    SP_TOP_APP    = 5,
     SP_CNT,
     SP_MAX        = SP_CNT - 1,
     SP_SYSTEM_DEFAULT = SP_FOREGROUND,
diff --git a/include/private/canned_fs_config.h b/include/private/canned_fs_config.h
new file mode 100644
index 0000000..d9f51ca
--- /dev/null
+++ b/include/private/canned_fs_config.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _CANNED_FS_CONFIG_H
+#define _CANNED_FS_CONFIG_H
+
+#include <inttypes.h>
+
+int load_canned_fs_config(const char* fn);
+void canned_fs_config(const char* path, int dir, const char* target_out_path,
+                      unsigned* uid, unsigned* gid, unsigned* mode, uint64_t* capabilities);
+
+#endif
diff --git a/include/system/graphics.h b/include/system/graphics.h
index cf2d7de..a9e451f 100644
--- a/include/system/graphics.h
+++ b/include/system/graphics.h
@@ -17,6 +17,7 @@
 #ifndef SYSTEM_CORE_INCLUDE_ANDROID_GRAPHICS_H
 #define SYSTEM_CORE_INCLUDE_ANDROID_GRAPHICS_H
 
+#include <stddef.h>
 #include <stdint.h>
 
 #ifdef __cplusplus
@@ -552,6 +553,37 @@
  * which describes both gamma curve and numeric range (within the bit depth).
  *
  * Other dataspaces include depth measurement data from a depth camera.
+ *
+ * A dataspace is comprised of a number of fields.
+ *
+ * Version
+ * --------
+ * The top 2 bits represent the revision of the field specification. This is
+ * currently always 0.
+ *
+ *
+ * bits    31-30 29                      -                          0
+ *        +-----+----------------------------------------------------+
+ * fields | Rev |            Revision specific fields                |
+ *        +-----+----------------------------------------------------+
+ *
+ * Field layout for version = 0:
+ * ----------------------------
+ *
+ * A dataspace is comprised of the following fields:
+ *      Standard
+ *      Transfer function
+ *      Range
+ *
+ * bits    31-30 29-27 26 -  22 21 -  16 15             -           0
+ *        +-----+-----+--------+--------+----------------------------+
+ * fields |  0  |Range|Transfer|Standard|    Legacy and custom       |
+ *        +-----+-----+--------+--------+----------------------------+
+ *          VV    RRR   TTTTT    SSSSSS    LLLLLLLL       LLLLLLLL
+ *
+ * If range, transfer and standard fields are all 0 (e.g. top 16 bits are
+ * all zeroes), the bottom 16 bits contain either a legacy dataspace value,
+ * or a custom value.
  */
 
 typedef enum android_dataspace {
@@ -580,14 +612,309 @@
     HAL_DATASPACE_ARBITRARY = 0x1,
 
     /*
-     * RGB Colorspaces
-     * -----------------
+     * Color-description aspects
      *
-     * Primaries are given using (x,y) coordinates in the CIE 1931 definition
-     * of x and y specified by ISO 11664-1.
+     * The following aspects define various characteristics of the color
+     * specification. These represent bitfields, so that a data space value
+     * can specify each of them independently.
+     */
+
+    HAL_DATASPACE_STANDARD_SHIFT = 16,
+
+    /*
+     * Standard aspect
+     *
+     * Defines the chromaticity coordinates of the source primaries in terms of
+     * the CIE 1931 definition of x and y specified in ISO 11664-1.
+     */
+    HAL_DATASPACE_STANDARD_MASK = 63 << HAL_DATASPACE_STANDARD_SHIFT,  // 0x3F
+
+    /*
+     * Chromacity coordinates are unknown or are determined by the application.
+     * Implementations shall use the following suggested standards:
+     *
+     * All YCbCr formats: BT709 if size is 720p or larger (since most video
+     *                    content is letterboxed this corresponds to width is
+     *                    1280 or greater, or height is 720 or greater).
+     *                    BT601_625 if size is smaller than 720p or is JPEG.
+     * All RGB formats:   BT709.
+     *
+     * For all other formats standard is undefined, and implementations should use
+     * an appropriate standard for the data represented.
+     */
+    HAL_DATASPACE_STANDARD_UNSPECIFIED = 0 << HAL_DATASPACE_STANDARD_SHIFT,
+
+    /*
+     * Primaries:       x       y
+     *  green           0.300   0.600
+     *  blue            0.150   0.060
+     *  red             0.640   0.330
+     *  white (D65)     0.3127  0.3290
+     *
+     * Use the unadjusted KR = 0.2126, KB = 0.0722 luminance interpretation
+     * for RGB conversion.
+     */
+    HAL_DATASPACE_STANDARD_BT709 = 1 << HAL_DATASPACE_STANDARD_SHIFT,
+
+    /*
+     * Primaries:       x       y
+     *  green           0.290   0.600
+     *  blue            0.150   0.060
+     *  red             0.640   0.330
+     *  white (D65)     0.3127  0.3290
+     *
+     *  KR = 0.299, KB = 0.114. This adjusts the luminance interpretation
+     *  for RGB conversion from the one purely determined by the primaries
+     *  to minimize the color shift into RGB space that uses BT.709
+     *  primaries.
+     */
+    HAL_DATASPACE_STANDARD_BT601_625 = 2 << HAL_DATASPACE_STANDARD_SHIFT,
+
+    /*
+     * Primaries:       x       y
+     *  green           0.290   0.600
+     *  blue            0.150   0.060
+     *  red             0.640   0.330
+     *  white (D65)     0.3127  0.3290
+     *
+     * Use the unadjusted KR = 0.222, KB = 0.071 luminance interpretation
+     * for RGB conversion.
+     */
+    HAL_DATASPACE_STANDARD_BT601_625_UNADJUSTED = 3 << HAL_DATASPACE_STANDARD_SHIFT,
+
+    /*
+     * Primaries:       x       y
+     *  green           0.310   0.595
+     *  blue            0.155   0.070
+     *  red             0.630   0.340
+     *  white (D65)     0.3127  0.3290
+     *
+     *  KR = 0.299, KB = 0.114. This adjusts the luminance interpretation
+     *  for RGB conversion from the one purely determined by the primaries
+     *  to minimize the color shift into RGB space that uses BT.709
+     *  primaries.
+     */
+    HAL_DATASPACE_STANDARD_BT601_525 = 4 << HAL_DATASPACE_STANDARD_SHIFT,
+
+    /*
+     * Primaries:       x       y
+     *  green           0.310   0.595
+     *  blue            0.155   0.070
+     *  red             0.630   0.340
+     *  white (D65)     0.3127  0.3290
+     *
+     * Use the unadjusted KR = 0.212, KB = 0.087 luminance interpretation
+     * for RGB conversion (as in SMPTE 240M).
+     */
+    HAL_DATASPACE_STANDARD_BT601_525_UNADJUSTED = 5 << HAL_DATASPACE_STANDARD_SHIFT,
+
+    /*
+     * Primaries:       x       y
+     *  green           0.170   0.797
+     *  blue            0.131   0.046
+     *  red             0.708   0.292
+     *  white (D65)     0.3127  0.3290
+     *
+     * Use the unadjusted KR = 0.2627, KB = 0.0593 luminance interpretation
+     * for RGB conversion.
+     */
+    HAL_DATASPACE_STANDARD_BT2020 = 6 << HAL_DATASPACE_STANDARD_SHIFT,
+
+    /*
+     * Primaries:       x       y
+     *  green           0.170   0.797
+     *  blue            0.131   0.046
+     *  red             0.708   0.292
+     *  white (D65)     0.3127  0.3290
+     *
+     * Use the unadjusted KR = 0.2627, KB = 0.0593 luminance interpretation
+     * for RGB conversion using the linear domain.
+     */
+    HAL_DATASPACE_STANDARD_BT2020_CONSTANT_LUMINANCE = 7 << HAL_DATASPACE_STANDARD_SHIFT,
+
+    /*
+     * Primaries:       x      y
+     *  green           0.21   0.71
+     *  blue            0.14   0.08
+     *  red             0.67   0.33
+     *  white (C)       0.310  0.316
+     *
+     * Use the unadjusted KR = 0.30, KB = 0.11 luminance interpretation
+     * for RGB conversion.
+     */
+    HAL_DATASPACE_STANDARD_BT470M = 8 << HAL_DATASPACE_STANDARD_SHIFT,
+
+    /*
+     * Primaries:       x       y
+     *  green           0.243   0.692
+     *  blue            0.145   0.049
+     *  red             0.681   0.319
+     *  white (C)       0.310   0.316
+     *
+     * Use the unadjusted KR = 0.254, KB = 0.068 luminance interpretation
+     * for RGB conversion.
+     */
+    HAL_DATASPACE_STANDARD_FILM = 9 << HAL_DATASPACE_STANDARD_SHIFT,
+
+    HAL_DATASPACE_TRANSFER_SHIFT = 22,
+
+    /*
+     * Transfer aspect
      *
      * Transfer characteristics are the opto-electronic transfer characteristic
      * at the source as a function of linear optical intensity (luminance).
+     *
+     * For digital signals, E corresponds to the recorded value. Normally, the
+     * transfer function is applied in RGB space to each of the R, G and B
+     * components independently. This may result in color shift that can be
+     * minized by applying the transfer function in Lab space only for the L
+     * component. Implementation may apply the transfer function in RGB space
+     * for all pixel formats if desired.
+     */
+
+    HAL_DATASPACE_TRANSFER_MASK = 31 << HAL_DATASPACE_TRANSFER_SHIFT,  // 0x1F
+
+    /*
+     * Transfer characteristics are unknown or are determined by the
+     * application.
+     *
+     * Implementations should use the following transfer functions:
+     *
+     * For YCbCr formats: use HAL_DATASPACE_TRANSFER_SMPTE_170M
+     * For RGB formats: use HAL_DATASPACE_TRANSFER_SRGB
+     *
+     * For all other formats transfer function is undefined, and implementations
+     * should use an appropriate standard for the data represented.
+     */
+    HAL_DATASPACE_TRANSFER_UNSPECIFIED = 0 << HAL_DATASPACE_TRANSFER_SHIFT,
+
+    /*
+     * Transfer characteristic curve:
+     *  E = L
+     *      L - luminance of image 0 <= L <= 1 for conventional colorimetry
+     *      E - corresponding electrical signal
+     */
+    HAL_DATASPACE_TRANSFER_LINEAR = 1 << HAL_DATASPACE_TRANSFER_SHIFT,
+
+    /*
+     * Transfer characteristic curve:
+     *
+     * E = 1.055 * L^(1/2.4) - 0.055  for 0.0031308 <= L <= 1
+     *   = 12.92 * L                  for 0 <= L < 0.0031308
+     *     L - luminance of image 0 <= L <= 1 for conventional colorimetry
+     *     E - corresponding electrical signal
+     */
+    HAL_DATASPACE_TRANSFER_SRGB = 2 << HAL_DATASPACE_TRANSFER_SHIFT,
+
+    /*
+     * BT.601 525, BT.601 625, BT.709, BT.2020
+     *
+     * Transfer characteristic curve:
+     *  E = 1.099 * L ^ 0.45 - 0.099  for 0.018 <= L <= 1
+     *    = 4.500 * L                 for 0 <= L < 0.018
+     *      L - luminance of image 0 <= L <= 1 for conventional colorimetry
+     *      E - corresponding electrical signal
+     */
+    HAL_DATASPACE_TRANSFER_SMPTE_170M = 3 << HAL_DATASPACE_TRANSFER_SHIFT,
+
+    /*
+     * Assumed display gamma 2.2.
+     *
+     * Transfer characteristic curve:
+     *  E = L ^ (1/2.2)
+     *      L - luminance of image 0 <= L <= 1 for conventional colorimetry
+     *      E - corresponding electrical signal
+     */
+    HAL_DATASPACE_TRANSFER_GAMMA2_2 = 4 << HAL_DATASPACE_TRANSFER_SHIFT,
+
+    /*
+     *  display gamma 2.8.
+     *
+     * Transfer characteristic curve:
+     *  E = L ^ (1/2.8)
+     *      L - luminance of image 0 <= L <= 1 for conventional colorimetry
+     *      E - corresponding electrical signal
+     */
+    HAL_DATASPACE_TRANSFER_GAMMA2_8 = 5 << HAL_DATASPACE_TRANSFER_SHIFT,
+
+    /*
+     * SMPTE ST 2084
+     *
+     * Transfer characteristic curve:
+     *  E = ((c1 + c2 * L^n) / (1 + c3 * L^n)) ^ m
+     *  c1 = c3 - c2 + 1 = 3424 / 4096 = 0.8359375
+     *  c2 = 32 * 2413 / 4096 = 18.8515625
+     *  c3 = 32 * 2392 / 4096 = 18.6875
+     *  m = 128 * 2523 / 4096 = 78.84375
+     *  n = 0.25 * 2610 / 4096 = 0.1593017578125
+     *      L - luminance of image 0 <= L <= 1 for HDR colorimetry.
+     *          L = 1 corresponds to 10000 cd/m2
+     *      E - corresponding electrical signal
+     */
+    HAL_DATASPACE_TRANSFER_ST2084 = 6 << HAL_DATASPACE_TRANSFER_SHIFT,
+
+    /*
+     * ARIB STD-B67 Hybrid Log Gamma
+     *
+     * Transfer characteristic curve:
+     *  E = r * L^0.5                 for 0 <= L <= 1
+     *    = a * ln(L - b) + c         for 1 < L
+     *  a = 0.17883277
+     *  b = 0.28466892
+     *  c = 0.55991073
+     *  r = 0.5
+     *      L - luminance of image 0 <= L for HDR colorimetry. L = 1 corresponds
+     *          to reference white level of 100 cd/m2
+     *      E - corresponding electrical signal
+     */
+    HAL_DATASPACE_TRANSFER_HLG = 7 << HAL_DATASPACE_TRANSFER_SHIFT,
+
+    HAL_DATASPACE_RANGE_SHIFT = 27,
+
+    /*
+     * Range aspect
+     *
+     * Defines the range of values corresponding to the unit range of 0-1.
+     * This is defined for YCbCr only, but can be expanded to RGB space.
+     */
+    HAL_DATASPACE_RANGE_MASK = 7 << HAL_DATASPACE_RANGE_SHIFT,  // 0x7
+
+    /*
+     * Range is unknown or are determined by the application.  Implementations
+     * shall use the following suggested ranges:
+     *
+     * All YCbCr formats: limited range.
+     * All RGB or RGBA formats (including RAW and Bayer): full range.
+     * All Y formats: full range
+     *
+     * For all other formats range is undefined, and implementations should use
+     * an appropriate range for the data represented.
+     */
+    HAL_DATASPACE_RANGE_UNSPECIFIED = 0 << HAL_DATASPACE_RANGE_SHIFT,
+
+    /*
+     * Full range uses all values for Y, Cb and Cr from
+     * 0 to 2^b-1, where b is the bit depth of the color format.
+     */
+    HAL_DATASPACE_RANGE_FULL = 1 << HAL_DATASPACE_RANGE_SHIFT,
+
+    /*
+     * Limited range uses values 16/256*2^b to 235/256*2^b for Y, and
+     * 1/16*2^b to 15/16*2^b for Cb, Cr, R, G and B, where b is the bit depth of
+     * the color format.
+     *
+     * E.g. For 8-bit-depth formats:
+     * Luma (Y) samples should range from 16 to 235, inclusive
+     * Chroma (Cb, Cr) samples should range from 16 to 240, inclusive
+     *
+     * For 10-bit-depth formats:
+     * Luma (Y) samples should range from 64 to 940, inclusive
+     * Chroma (Cb, Cr) samples should range from 64 to 960, inclusive
+     */
+    HAL_DATASPACE_RANGE_LIMITED = 2 << HAL_DATASPACE_RANGE_SHIFT,
+
+    /*
+     * Legacy dataspaces
      */
 
     /*
@@ -600,34 +927,30 @@
      * The values are encoded using the full range ([0,255] for 8-bit) for all
      * components.
      */
-    HAL_DATASPACE_SRGB_LINEAR = 0x200,
+    HAL_DATASPACE_SRGB_LINEAR = 0x200, // deprecated, use HAL_DATASPACE_V0_SRGB_LINEAR
+
+    HAL_DATASPACE_V0_SRGB_LINEAR = HAL_DATASPACE_STANDARD_BT709 |
+            HAL_DATASPACE_TRANSFER_LINEAR | HAL_DATASPACE_RANGE_FULL,
+
 
     /*
      * sRGB gamma encoding:
      *
      * The red, green and blue components are stored in sRGB space, and
-     * converted to linear space when read, using the standard sRGB to linear
-     * equation:
-     *
-     * Clinear = Csrgb / 12.92                  for Csrgb <= 0.04045
-     *         = (Csrgb + 0.055 / 1.055)^2.4    for Csrgb >  0.04045
-     *
-     * When written the inverse transformation is performed:
-     *
-     * Csrgb = 12.92 * Clinear                  for Clinear <= 0.0031308
-     *       = 1.055 * Clinear^(1/2.4) - 0.055  for Clinear >  0.0031308
-     *
+     * converted to linear space when read, using the SRGB transfer function
+     * for each of the R, G and B components. When written, the inverse
+     * transformation is performed.
      *
      * The alpha component, if present, is always stored in linear space and
      * is left unmodified when read or written.
      *
-     * The RGB primaries and the white point are the same as BT.709.
-     *
-     * The values are encoded using the full range ([0,255] for 8-bit) for all
-     * components.
-     *
+     * Use full range and BT.709 standard.
      */
-    HAL_DATASPACE_SRGB = 0x201,
+    HAL_DATASPACE_SRGB = 0x201, // deprecated, use HAL_DATASPACE_V0_SRGB
+
+    HAL_DATASPACE_V0_SRGB = HAL_DATASPACE_STANDARD_BT709 |
+            HAL_DATASPACE_TRANSFER_SRGB | HAL_DATASPACE_RANGE_FULL,
+
 
     /*
      * YCbCr Colorspaces
@@ -645,94 +968,53 @@
      *
      * Same model as BT.601-625, but all values (Y, Cb, Cr) range from 0 to 255
      *
-     * Transfer characteristic curve:
-     *  E = 1.099 * L ^ 0.45 - 0.099, 1.00 >= L >= 0.018
-     *  E = 4.500 L, 0.018 > L >= 0
-     *      L - luminance of image 0 <= L <= 1 for conventional colorimetry
-     *      E - corresponding electrical signal
-     *
-     * Primaries:       x       y
-     *  green           0.290   0.600
-     *  blue            0.150   0.060
-     *  red             0.640   0.330
-     *  white (D65)     0.3127  0.3290
+     * Use full range, BT.601 transfer and BT.601_625 standard.
      */
-    HAL_DATASPACE_JFIF = 0x101,
+    HAL_DATASPACE_JFIF = 0x101, // deprecated, use HAL_DATASPACE_V0_JFIF
+
+    HAL_DATASPACE_V0_JFIF = HAL_DATASPACE_STANDARD_BT601_625 |
+            HAL_DATASPACE_TRANSFER_SMPTE_170M | HAL_DATASPACE_RANGE_FULL,
 
     /*
      * ITU-R Recommendation 601 (BT.601) - 625-line
      *
      * Standard-definition television, 625 Lines (PAL)
      *
-     * For 8-bit-depth formats:
-     * Luma (Y) samples should range from 16 to 235, inclusive
-     * Chroma (Cb, Cr) samples should range from 16 to 240, inclusive
-     *
-     * For 10-bit-depth formats:
-     * Luma (Y) samples should range from 64 to 940, inclusive
-     * Chroma (Cb, Cr) samples should range from 64 to 960, inclusive
-     *
-     * Transfer characteristic curve:
-     *  E = 1.099 * L ^ 0.45 - 0.099, 1.00 >= L >= 0.018
-     *  E = 4.500 L, 0.018 > L >= 0
-     *      L - luminance of image 0 <= L <= 1 for conventional colorimetry
-     *      E - corresponding electrical signal
-     *
-     * Primaries:       x       y
-     *  green           0.290   0.600
-     *  blue            0.150   0.060
-     *  red             0.640   0.330
-     *  white (D65)     0.3127  0.3290
+     * Use limited range, BT.601 transfer and BT.601_625 standard.
      */
-    HAL_DATASPACE_BT601_625 = 0x102,
+    HAL_DATASPACE_BT601_625 = 0x102, // deprecated, use HAL_DATASPACE_V0_BT601_625
+
+    HAL_DATASPACE_V0_BT601_625 = HAL_DATASPACE_STANDARD_BT601_625 |
+            HAL_DATASPACE_TRANSFER_SMPTE_170M | HAL_DATASPACE_RANGE_LIMITED,
+
 
     /*
      * ITU-R Recommendation 601 (BT.601) - 525-line
      *
      * Standard-definition television, 525 Lines (NTSC)
      *
-     * For 8-bit-depth formats:
-     * Luma (Y) samples should range from 16 to 235, inclusive
-     * Chroma (Cb, Cr) samples should range from 16 to 240, inclusive
-     *
-     * For 10-bit-depth formats:
-     * Luma (Y) samples should range from 64 to 940, inclusive
-     * Chroma (Cb, Cr) samples should range from 64 to 960, inclusive
-     *
-     * Transfer characteristic curve:
-     *  E = 1.099 * L ^ 0.45 - 0.099, 1.00 >= L >= 0.018
-     *  E = 4.500 L, 0.018 > L >= 0
-     *      L - luminance of image 0 <= L <= 1 for conventional colorimetry
-     *      E - corresponding electrical signal
-     *
-     * Primaries:       x       y
-     *  green           0.310   0.595
-     *  blue            0.155   0.070
-     *  red             0.630   0.340
-     *  white (D65)     0.3127  0.3290
+     * Use limited range, BT.601 transfer and BT.601_525 standard.
      */
-    HAL_DATASPACE_BT601_525 = 0x103,
+    HAL_DATASPACE_BT601_525 = 0x103, // deprecated, use HAL_DATASPACE_V0_BT601_525
+
+    HAL_DATASPACE_V0_BT601_525 = HAL_DATASPACE_STANDARD_BT601_525 |
+            HAL_DATASPACE_TRANSFER_SMPTE_170M | HAL_DATASPACE_RANGE_LIMITED,
 
     /*
      * ITU-R Recommendation 709 (BT.709)
      *
      * High-definition television
      *
-     * For 8-bit-depth formats:
-     * Luma (Y) samples should range from 16 to 235, inclusive
-     * Chroma (Cb, Cr) samples should range from 16 to 240, inclusive
-     *
-     * For 10-bit-depth formats:
-     * Luma (Y) samples should range from 64 to 940, inclusive
-     * Chroma (Cb, Cr) samples should range from 64 to 960, inclusive
-     *
-     * Primaries:       x       y
-     *  green           0.300   0.600
-     *  blue            0.150   0.060
-     *  red             0.640   0.330
-     *  white (D65)     0.3127  0.3290
+     * Use limited range, BT.709 transfer and BT.709 standard.
      */
-    HAL_DATASPACE_BT709 = 0x104,
+    HAL_DATASPACE_BT709 = 0x104, // deprecated, use HAL_DATASPACE_V0_BT709
+
+    HAL_DATASPACE_V0_BT709 = HAL_DATASPACE_STANDARD_BT709 |
+            HAL_DATASPACE_TRANSFER_SMPTE_170M | HAL_DATASPACE_RANGE_LIMITED,
+
+    /*
+     * Data spaces for non-color formats
+     */
 
     /*
      * The buffer contains depth ranging measurements from a depth camera.
@@ -756,6 +1038,48 @@
 
 } android_dataspace_t;
 
+/*
+ * Color transforms that may be applied by hardware composer to the whole
+ * display.
+ */
+typedef enum android_color_transform {
+    /* Applies no transform to the output color */
+    HAL_COLOR_TRANSFORM_IDENTITY = 0,
+
+    /* Applies an arbitrary transform defined by a 4x4 affine matrix */
+    HAL_COLOR_TRANSFORM_ARBITRARY_MATRIX = 1,
+
+    /* Applies a transform that inverts the value or luminance of the color, but
+     * does not modify hue or saturation */
+    HAL_COLOR_TRANSFORM_VALUE_INVERSE = 2,
+
+    /* Applies a transform that maps all colors to shades of gray */
+    HAL_COLOR_TRANSFORM_GRAYSCALE = 3,
+
+    /* Applies a transform which corrects for protanopic color blindness */
+    HAL_COLOR_TRANSFORM_CORRECT_PROTANOPIA = 4,
+
+    /* Applies a transform which corrects for deuteranopic color blindness */
+    HAL_COLOR_TRANSFORM_CORRECT_DEUTERANOPIA = 5,
+
+    /* Applies a transform which corrects for tritanopic color blindness */
+    HAL_COLOR_TRANSFORM_CORRECT_TRITANOPIA = 6
+} android_color_transform_t;
+
+/*
+ * Supported HDR formats. Must be kept in sync with equivalents in Display.java.
+ */
+typedef enum android_hdr {
+    /* Device supports Dolby Vision HDR */
+    HAL_HDR_DOLBY_VISION = 1,
+
+    /* Device supports HDR10 */
+    HAL_HDR_HDR10 = 2,
+
+    /* Device supports hybrid log-gamma HDR */
+    HAL_HDR_HLG = 3
+} android_hdr_t;
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/include/system/radio.h b/include/system/radio.h
index a088526..9e291c8 100644
--- a/include/system/radio.h
+++ b/include/system/radio.h
@@ -94,6 +94,7 @@
     radio_rds_t         rds;        /* RDS variants supported */
     bool                ta;         /* Traffic Announcement supported */
     bool                af;         /* Alternate Frequency supported */
+    bool                ea;         /* Emergency announcements supported */
 } radio_hal_fm_band_config_t;
 
 /* Additional attributes for an AM band configuration */
@@ -184,6 +185,7 @@
     RADIO_EVENT_METADATA    = 4,  /* New meta data received */
     RADIO_EVENT_TA          = 5,  /* Traffic announcement start or stop */
     RADIO_EVENT_AF_SWITCH   = 6,  /* Switch to Alternate Frequency */
+    RADIO_EVENT_EA          = 7,  /* Emergency announcement start or stop */
     // begin framework only events
     RADIO_EVENT_CONTROL     = 100, /* loss/gain of tuner control */
     RADIO_EVENT_SERVER_DIED = 101, /* radio service died */
@@ -195,7 +197,8 @@
     radio_event_type_t  type;       /* event type */
     int                 status;     /* used by RADIO_EVENT_CONFIG, RADIO_EVENT_TUNED */
     union {
-        bool                    on;     /* RADIO_EVENT_ANTENNA, RADIO_EVENT_TA */
+        /* RADIO_EVENT_ANTENNA, RADIO_EVENT_TA, RADIO_EVENT_EA */
+        bool                    on;
         radio_hal_band_config_t config; /* RADIO_EVENT_CONFIG */
         radio_program_info_t    info;   /* RADIO_EVENT_TUNED, RADIO_EVENT_AF_SWITCH */
         radio_metadata_t        *metadata; /* RADIO_EVENT_METADATA */
diff --git a/include/system/window.h b/include/system/window.h
index 508ce00..b8f33ff 100644
--- a/include/system/window.h
+++ b/include/system/window.h
@@ -25,6 +25,7 @@
 #include <sys/cdefs.h>
 #include <system/graphics.h>
 #include <unistd.h>
+#include <stdbool.h>
 
 #ifndef __UNUSED
 #define __UNUSED __attribute__((__unused__))
@@ -311,6 +312,8 @@
     NATIVE_WINDOW_SET_SIDEBAND_STREAM       = 18,
     NATIVE_WINDOW_SET_BUFFERS_DATASPACE     = 19,
     NATIVE_WINDOW_SET_SURFACE_DAMAGE        = 20,   /* private */
+    NATIVE_WINDOW_SET_SHARED_BUFFER_MODE    = 21,
+    NATIVE_WINDOW_SET_AUTO_REFRESH          = 22,
 };
 
 /* parameter for NATIVE_WINDOW_[API_][DIS]CONNECT */
@@ -351,7 +354,8 @@
     NATIVE_WINDOW_TRANSFORM_INVERSE_DISPLAY = 0x08
 };
 
-/* parameter for NATIVE_WINDOW_SET_SCALING_MODE */
+/* parameter for NATIVE_WINDOW_SET_SCALING_MODE
+ * keep in sync with Surface.java in frameworks/base */
 enum {
     /* the window content is not updated (frozen) until a buffer of
      * the window size is received (enqueued)
@@ -949,6 +953,29 @@
             rects, numRects);
 }
 
+/*
+ * native_window_set_shared_buffer_mode(..., bool sharedBufferMode)
+ * Enable/disable shared buffer mode
+ */
+static inline int native_window_set_shared_buffer_mode(
+        struct ANativeWindow* window,
+        bool sharedBufferMode)
+{
+    return window->perform(window, NATIVE_WINDOW_SET_SHARED_BUFFER_MODE,
+            sharedBufferMode);
+}
+
+/*
+ * native_window_set_auto_refresh(..., autoRefresh)
+ * Enable/disable auto refresh when in shared buffer mode
+ */
+static inline int native_window_set_auto_refresh(
+        struct ANativeWindow* window,
+        bool autoRefresh)
+{
+    return window->perform(window, NATIVE_WINDOW_SET_AUTO_REFRESH, autoRefresh);
+}
+
 __END_DECLS
 
 #endif /* SYSTEM_CORE_INCLUDE_ANDROID_WINDOW_H */
diff --git a/include/usbhost/usbhost.h b/include/usbhost/usbhost.h
index 4350ec1..88b5b44 100644
--- a/include/usbhost/usbhost.h
+++ b/include/usbhost/usbhost.h
@@ -219,6 +219,9 @@
                             int length,
                             unsigned int timeout);
 
+/** Reset USB bus for the device */
+int usb_device_reset(struct usb_device *device);
+
 /* Creates a new usb_request. */
 struct usb_request *usb_request_new(struct usb_device *dev,
         const struct usb_endpoint_descriptor *ep_desc);
diff --git a/include/utils/Mutex.h b/include/utils/Mutex.h
index f027c79..9b0b734 100644
--- a/include/utils/Mutex.h
+++ b/include/utils/Mutex.h
@@ -35,6 +35,10 @@
 class Condition;
 
 /*
+ * NOTE: This class is for code that builds on Win32.  Its usage is
+ * deprecated for code which doesn't build for Win32.  New code which
+ * doesn't build for Win32 should use std::mutex and std::lock_guard instead.
+ *
  * Simple mutex class.  The implementation is system-dependent.
  *
  * The mutex must be unlocked by the thread that locked it.  They are not
diff --git a/include/utils/Thread.h b/include/utils/Thread.h
index 1532b7e..3792db7 100644
--- a/include/utils/Thread.h
+++ b/include/utils/Thread.h
@@ -45,7 +45,7 @@
     virtual             ~Thread();
 
     // Start the thread in threadLoop() which needs to be implemented.
-    virtual status_t    run(    const char* name = 0,
+    virtual status_t    run(    const char* name,
                                 int32_t priority = PRIORITY_DEFAULT,
                                 size_t stack = 0);
     
diff --git a/include/ziparchive/zip_archive.h b/include/ziparchive/zip_archive.h
index 3591a6b..7dc60ae 100644
--- a/include/ziparchive/zip_archive.h
+++ b/include/ziparchive/zip_archive.h
@@ -152,6 +152,9 @@
  * if this file entry contains a data descriptor footer. To verify crc32s
  * and length, a call to VerifyCrcAndLengths must be made after entry data
  * has been processed.
+ *
+ * On non-Windows platforms this method does not modify internal state and
+ * can be called concurrently.
  */
 int32_t FindEntry(const ZipArchiveHandle handle, const ZipString& entryName,
                   ZipEntry* data);
diff --git a/init/Android.mk b/init/Android.mk
index e1a3638..2525b00 100644
--- a/init/Android.mk
+++ b/init/Android.mk
@@ -83,14 +83,15 @@
 
 LOCAL_STATIC_LIBRARIES := \
     libinit \
+    libbootloader_message_writer \
     libfs_mgr \
     libfec \
     libfec_rs \
     libsquashfs_utils \
     liblogwrap \
     libcutils \
-    libbase \
     libext4_utils_static \
+    libbase \
     libutils \
     libc \
     libselinux \
diff --git a/init/builtins.cpp b/init/builtins.cpp
index 89f6c68..e56ec4e 100644
--- a/init/builtins.cpp
+++ b/init/builtins.cpp
@@ -45,6 +45,7 @@
 #include <android-base/file.h>
 #include <android-base/parseint.h>
 #include <android-base/stringprintf.h>
+#include <bootloader_message_writer.h>
 #include <cutils/partition_utils.h>
 #include <cutils/android_reboot.h>
 #include <logwrap/logwrap.h>
@@ -451,14 +452,10 @@
 }
 
 static int wipe_data_via_recovery() {
-    mkdir("/cache/recovery", 0700);
-    int fd = open("/cache/recovery/command", O_RDWR|O_CREAT|O_TRUNC|O_CLOEXEC, 0600);
-    if (fd >= 0) {
-        write(fd, "--wipe_data\n", strlen("--wipe_data\n") + 1);
-        write(fd, "--reason=wipe_data_via_recovery\n", strlen("--reason=wipe_data_via_recovery\n") + 1);
-        close(fd);
-    } else {
-        ERROR("could not open /cache/recovery/command\n");
+    const std::vector<std::string> options = {"--wipe_data", "--reason=wipe_data_via_recovery"};
+    std::string err;
+    if (!write_bootloader_message(options, &err)) {
+        ERROR("failed to set bootloader message: %s", err.c_str());
         return -1;
     }
     android_reboot(ANDROID_RB_RESTART2, 0, "recovery");
@@ -541,23 +538,23 @@
     import_late(args, 2);
 
     if (ret == FS_MGR_MNTALL_DEV_NEEDS_ENCRYPTION) {
-        property_set("vold.decrypt", "trigger_encryption");
+        ActionManager::GetInstance().QueueEventTrigger("encrypt");
     } else if (ret == FS_MGR_MNTALL_DEV_MIGHT_BE_ENCRYPTED) {
         property_set("ro.crypto.state", "encrypted");
         property_set("ro.crypto.type", "block");
-        property_set("vold.decrypt", "trigger_default_encryption");
+        ActionManager::GetInstance().QueueEventTrigger("defaultcrypto");
     } else if (ret == FS_MGR_MNTALL_DEV_NOT_ENCRYPTED) {
         property_set("ro.crypto.state", "unencrypted");
-        /* If fs_mgr determined this is an unencrypted device, then trigger
-         * that action.
-         */
+        ActionManager::GetInstance().QueueEventTrigger("nonencrypted");
+    } else if (ret == FS_MGR_MNTALL_DEV_NOT_ENCRYPTABLE) {
+        property_set("ro.crypto.state", "unsupported");
         ActionManager::GetInstance().QueueEventTrigger("nonencrypted");
     } else if (ret == FS_MGR_MNTALL_DEV_NEEDS_RECOVERY) {
         /* Setup a wipe via recovery, and reboot into recovery */
         ERROR("fs_mgr_mount_all suggested recovery, so wiping data via recovery.\n");
         ret = wipe_data_via_recovery();
         /* If reboot worked, there is no return. */
-    } else if (ret == FS_MGR_MNTALL_DEV_DEFAULT_FILE_ENCRYPTED) {
+    } else if (ret == FS_MGR_MNTALL_DEV_FILE_ENCRYPTED) {
         if (e4crypt_install_keyring()) {
             return -1;
         }
@@ -567,13 +564,6 @@
         // Although encrypted, we have device key, so we do not need to
         // do anything different from the nonencrypted case.
         ActionManager::GetInstance().QueueEventTrigger("nonencrypted");
-    } else if (ret == FS_MGR_MNTALL_DEV_NON_DEFAULT_FILE_ENCRYPTED) {
-        if (e4crypt_install_keyring()) {
-            return -1;
-        }
-        property_set("ro.crypto.state", "encrypted");
-        property_set("ro.crypto.type", "file");
-        property_set("vold.decrypt", "trigger_restart_min_framework");
     } else if (ret > 0) {
         ERROR("fs_mgr_mount_all returned unexpected error %d\n", ret);
     }
@@ -931,11 +921,8 @@
                                      do_installkeys_ensure_dir_exists);
 }
 
-static int do_setusercryptopolicies(const std::vector<std::string>& args) {
-    if (!is_file_crypto()) {
-        return 0;
-    }
-    return e4crypt_set_user_crypto_policies(args[1].c_str());
+static int do_init_user0(const std::vector<std::string>& args) {
+    return e4crypt_do_init_user0();
 }
 
 BuiltinFunctionMap::Map& BuiltinFunctionMap::map() const {
@@ -954,6 +941,7 @@
         {"export",                  {2,     2,    do_export}},
         {"hostname",                {1,     1,    do_hostname}},
         {"ifup",                    {1,     1,    do_ifup}},
+        {"init_user0",              {0,     0,    do_init_user0}},
         {"insmod",                  {1,     kMax, do_insmod}},
         {"installkey",              {1,     1,    do_installkey}},
         {"load_persist_props",      {0,     0,    do_load_persist_props}},
@@ -970,7 +958,6 @@
         {"rmdir",                   {1,     1,    do_rmdir}},
         {"setprop",                 {2,     2,    do_setprop}},
         {"setrlimit",               {3,     3,    do_setrlimit}},
-        {"setusercryptopolicies",   {1,     1,    do_setusercryptopolicies}},
         {"start",                   {1,     1,    do_start}},
         {"stop",                    {1,     1,    do_stop}},
         {"swapon_all",              {1,     1,    do_swapon_all}},
diff --git a/libbacktrace/Backtrace.cpp b/libbacktrace/Backtrace.cpp
index 995abc0..0d2e11b 100644
--- a/libbacktrace/Backtrace.cpp
+++ b/libbacktrace/Backtrace.cpp
@@ -52,24 +52,8 @@
   }
 }
 
-extern "C" char* __cxa_demangle(const char* mangled, char* buf, size_t* len,
-                                int* status);
-
 std::string Backtrace::GetFunctionName(uintptr_t pc, uintptr_t* offset) {
   std::string func_name = GetFunctionNameRaw(pc, offset);
-  if (!func_name.empty()) {
-#if defined(__APPLE__)
-    // Mac OS' __cxa_demangle demangles "f" as "float"; last tested on 10.7.
-    if (func_name[0] != '_') {
-      return func_name;
-    }
-#endif
-    char* name = __cxa_demangle(func_name.c_str(), 0, 0, 0);
-    if (name) {
-      func_name = name;
-      free(name);
-    }
-  }
   return func_name;
 }
 
diff --git a/libcutils/Android.mk b/libcutils/Android.mk
index c0d4d76..0c6e5a1 100644
--- a/libcutils/Android.mk
+++ b/libcutils/Android.mk
@@ -20,6 +20,7 @@
         atomic.c.arm \
         config_utils.c \
         fs_config.c \
+        canned_fs_config.c \
         hashmap.c \
         iosched_policy.c \
         load_file.c \
diff --git a/libcutils/canned_fs_config.c b/libcutils/canned_fs_config.c
new file mode 100644
index 0000000..5800857
--- /dev/null
+++ b/libcutils/canned_fs_config.c
@@ -0,0 +1,117 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <inttypes.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <limits.h>
+#include <stdlib.h>
+
+#include <private/android_filesystem_config.h>
+#include <private/canned_fs_config.h>
+
+typedef struct {
+	const char* path;
+	unsigned uid;
+	unsigned gid;
+	unsigned mode;
+	uint64_t capabilities;
+} Path;
+
+static Path* canned_data = NULL;
+static int canned_alloc = 0;
+static int canned_used = 0;
+
+static int path_compare(const void* a, const void* b) {
+	return strcmp(((Path*)a)->path, ((Path*)b)->path);
+}
+
+int load_canned_fs_config(const char* fn) {
+	FILE* f = fopen(fn, "r");
+	if (f == NULL) {
+		fprintf(stderr, "failed to open %s: %s\n", fn, strerror(errno));
+		return -1;
+	}
+
+	char line[PATH_MAX + 200];
+	while (fgets(line, sizeof(line), f)) {
+		while (canned_used >= canned_alloc) {
+			canned_alloc = (canned_alloc+1) * 2;
+			canned_data = (Path*) realloc(canned_data, canned_alloc * sizeof(Path));
+		}
+		Path* p = canned_data + canned_used;
+		p->path = strdup(strtok(line, " "));
+		p->uid = atoi(strtok(NULL, " "));
+		p->gid = atoi(strtok(NULL, " "));
+		p->mode = strtol(strtok(NULL, " "), NULL, 8);   // mode is in octal
+		p->capabilities = 0;
+
+		char* token = NULL;
+		do {
+			token = strtok(NULL, " ");
+			if (token && strncmp(token, "capabilities=", 13) == 0) {
+				p->capabilities = strtoll(token+13, NULL, 0);
+				break;
+			}
+		} while (token);
+
+		canned_used++;
+	}
+
+	fclose(f);
+
+	qsort(canned_data, canned_used, sizeof(Path), path_compare);
+	printf("loaded %d fs_config entries\n", canned_used);
+
+	return 0;
+}
+
+static const int kDebugCannedFsConfig = 0;
+
+void canned_fs_config(const char* path, int dir, const char* target_out_path,
+					  unsigned* uid, unsigned* gid, unsigned* mode, uint64_t* capabilities) {
+	Path key;
+    key.path = path;
+    if (path[0] == '/')
+        key.path++;   // canned paths lack the leading '/'
+	Path* p = (Path*) bsearch(&key, canned_data, canned_used, sizeof(Path), path_compare);
+	if (p == NULL) {
+		fprintf(stderr, "failed to find [%s] in canned fs_config\n", path);
+		exit(1);
+	}
+	*uid = p->uid;
+	*gid = p->gid;
+	*mode = p->mode;
+	*capabilities = p->capabilities;
+
+	if (kDebugCannedFsConfig) {
+		// for debugging, run the built-in fs_config and compare the results.
+
+		unsigned c_uid, c_gid, c_mode;
+		uint64_t c_capabilities;
+		fs_config(path, dir, target_out_path, &c_uid, &c_gid, &c_mode, &c_capabilities);
+
+		if (c_uid != *uid) printf("%s uid %d %d\n", path, *uid, c_uid);
+		if (c_gid != *gid) printf("%s gid %d %d\n", path, *gid, c_gid);
+		if (c_mode != *mode) printf("%s mode 0%o 0%o\n", path, *mode, c_mode);
+		if (c_capabilities != *capabilities)
+			printf("%s capabilities %" PRIx64 " %" PRIx64 "\n",
+				path,
+				*capabilities,
+				c_capabilities);
+        }
+}
diff --git a/libcutils/fs.c b/libcutils/fs.c
index 45c7add..5e2ef0b 100644
--- a/libcutils/fs.c
+++ b/libcutils/fs.c
@@ -37,7 +37,8 @@
 #define ALL_PERMS (S_ISUID | S_ISGID | S_ISVTX | S_IRWXU | S_IRWXG | S_IRWXO)
 #define BUF_SIZE 64
 
-int fs_prepare_dir(const char* path, mode_t mode, uid_t uid, gid_t gid) {
+static int fs_prepare_dir_impl(const char* path, mode_t mode, uid_t uid, gid_t gid,
+        int allow_fixup) {
     // Check if path needs to be created
     struct stat sb;
     if (TEMP_FAILURE_RETRY(lstat(path, &sb)) == -1) {
@@ -54,10 +55,22 @@
         ALOGE("Not a directory: %s", path);
         return -1;
     }
-    if (((sb.st_mode & ALL_PERMS) == mode) && (sb.st_uid == uid) && (sb.st_gid == gid)) {
+    int owner_match = ((sb.st_uid == uid) && (sb.st_gid == gid));
+    int mode_match = ((sb.st_mode & ALL_PERMS) == mode);
+    if (owner_match && mode_match) {
         return 0;
-    } else {
+    } else if (allow_fixup) {
         goto fixup;
+    } else {
+        if (!owner_match) {
+            ALOGE("Expected path %s with owner %d:%d but found %d:%d",
+                    path, uid, gid, sb.st_uid, sb.st_gid);
+            return -1;
+        } else {
+            ALOGW("Expected path %s with mode %o but found %o",
+                    path, mode, (sb.st_mode & ALL_PERMS));
+            return 0;
+        }
     }
 
 create:
@@ -81,6 +94,14 @@
     return 0;
 }
 
+int fs_prepare_dir(const char* path, mode_t mode, uid_t uid, gid_t gid) {
+    return fs_prepare_dir_impl(path, mode, uid, gid, 1);
+}
+
+int fs_prepare_dir_strict(const char* path, mode_t mode, uid_t uid, gid_t gid) {
+    return fs_prepare_dir_impl(path, mode, uid, gid, 0);
+}
+
 int fs_read_atomic_int(const char* path, int* out_value) {
     int fd = TEMP_FAILURE_RETRY(open(path, O_RDONLY));
     if (fd == -1) {
diff --git a/libcutils/fs_config.c b/libcutils/fs_config.c
index 6d50adc..0abfcbf 100644
--- a/libcutils/fs_config.c
+++ b/libcutils/fs_config.c
@@ -79,6 +79,7 @@
     { 00500, AID_ROOT,   AID_ROOT,   0, "config" },
     { 00771, AID_SYSTEM, AID_SYSTEM, 0, "data/app" },
     { 00771, AID_SYSTEM, AID_SYSTEM, 0, "data/app-private" },
+    { 00771, AID_SYSTEM, AID_SYSTEM, 0, "data/app-ephemeral" },
     { 00771, AID_ROOT,   AID_ROOT,   0, "data/dalvik-cache" },
     { 00771, AID_SYSTEM, AID_SYSTEM, 0, "data/data" },
     { 00771, AID_SHELL,  AID_SHELL,  0, "data/local/tmp" },
@@ -117,7 +118,6 @@
     { 00440, AID_ROOT,      AID_SHELL,     0, "system/etc/init.goldfish.rc" },
     { 00550, AID_ROOT,      AID_SHELL,     0, "system/etc/init.goldfish.sh" },
     { 00550, AID_ROOT,      AID_SHELL,     0, "system/etc/init.ril" },
-    { 00550, AID_DHCP,      AID_SHELL,     0, "system/etc/dhcpcd/dhcpcd-run-hooks" },
     { 00555, AID_ROOT,      AID_ROOT,      0, "system/etc/ppp/*" },
     { 00555, AID_ROOT,      AID_ROOT,      0, "system/etc/rc.*" },
     { 00440, AID_ROOT,      AID_ROOT,      0, "system/etc/recovery.img" },
@@ -126,6 +126,7 @@
     { 00644, AID_SYSTEM,    AID_SYSTEM,    0, "data/app/*" },
     { 00644, AID_MEDIA_RW,  AID_MEDIA_RW,  0, "data/media/*" },
     { 00644, AID_SYSTEM,    AID_SYSTEM,    0, "data/app-private/*" },
+    { 00644, AID_SYSTEM,    AID_SYSTEM,    0, "data/app-ephemeral/*" },
     { 00644, AID_APP,       AID_APP,       0, "data/data/*" },
     { 00640, AID_ROOT,      AID_SHELL,     0, "data/nativetest/tests.txt" },
     { 00640, AID_ROOT,      AID_SHELL,     0, "data/nativetest64/tests.txt" },
diff --git a/libcutils/multiuser.c b/libcutils/multiuser.c
index 7c74bb8..0f4427b 100644
--- a/libcutils/multiuser.c
+++ b/libcutils/multiuser.c
@@ -27,3 +27,9 @@
 uid_t multiuser_get_uid(userid_t userId, appid_t appId) {
     return userId * MULTIUSER_APP_PER_USER_RANGE + (appId % MULTIUSER_APP_PER_USER_RANGE);
 }
+
+appid_t multiuser_get_shared_app_gid(uid_t id) {
+  return MULTIUSER_FIRST_SHARED_APPLICATION_GID + (id % MULTIUSER_APP_PER_USER_RANGE)
+          - MULTIUSER_FIRST_APPLICATION_UID;
+
+}
diff --git a/libcutils/qtaguid.c b/libcutils/qtaguid.c
index 14a58ca..dcd16ef 100644
--- a/libcutils/qtaguid.c
+++ b/libcutils/qtaguid.c
@@ -72,7 +72,8 @@
         savedErrno = 0;
     }
     if (res < 0) {
-        ALOGI("Failed write_ctrl(%s) res=%d errno=%d", cmd, res, savedErrno);
+        // ALOGV is enough because all the callers also log failures
+        ALOGV("Failed write_ctrl(%s) res=%d errno=%d", cmd, res, savedErrno);
     }
     close(fd);
     return -savedErrno;
diff --git a/libcutils/sched_policy.c b/libcutils/sched_policy.c
index 7bb8223..884ee17 100644
--- a/libcutils/sched_policy.c
+++ b/libcutils/sched_policy.c
@@ -62,8 +62,10 @@
 
 #ifdef USE_CPUSETS
 // File descriptors open to /dev/cpuset/../tasks, setup by initialize, or -1 on error
+static int system_bg_cpuset_fd = -1;
 static int bg_cpuset_fd = -1;
 static int fg_cpuset_fd = -1;
+static int ta_cpuset_fd = -1; // special cpuset for top app
 static int bg_schedboost_fd = -1;
 static int fg_schedboost_fd = -1;
 #endif
@@ -130,19 +132,23 @@
         fg_cpuset_fd = open(filename, O_WRONLY | O_CLOEXEC);
         filename = "/dev/cpuset/background/tasks";
         bg_cpuset_fd = open(filename, O_WRONLY | O_CLOEXEC);
+        filename = "/dev/cpuset/system-background/tasks";
+        system_bg_cpuset_fd = open(filename, O_WRONLY | O_CLOEXEC);
+        filename = "/dev/cpuset/top-app/tasks";
+        ta_cpuset_fd = open(filename, O_WRONLY | O_CLOEXEC);
+
 #ifdef USE_SCHEDBOOST
-        filename = "/sys/fs/cgroup/stune/foreground/tasks";
+        filename = "/dev/stune/foreground/tasks";
         fg_schedboost_fd = open(filename, O_WRONLY | O_CLOEXEC);
-        filename = "/sys/fs/cgroup/stune/tasks";
+        filename = "/dev/stune/tasks";
         bg_schedboost_fd = open(filename, O_WRONLY | O_CLOEXEC);
 #endif
     }
 #endif
-
 }
 
 /*
- * Try to get the scheduler group.
+ * Returns the path under the requested cgroup subsystem (if it exists)
  *
  * The data from /proc/<pid>/cgroup looks (something) like:
  *  2:cpu:/bg_non_interactive
@@ -152,7 +158,7 @@
  * the default cgroup.  If the string is longer than "bufLen", the string
  * will be truncated.
  */
-static int getSchedulerGroup(int tid, char* buf, size_t bufLen)
+static int getCGroupSubsys(int tid, const char* subsys, char* buf, size_t bufLen)
 {
 #if defined(__ANDROID__)
     char pathBuf[32];
@@ -166,7 +172,7 @@
 
     while(fgets(lineBuf, sizeof(lineBuf) -1, fp)) {
         char *next = lineBuf;
-        char *subsys;
+        char *found_subsys;
         char *grp;
         size_t len;
 
@@ -175,11 +181,11 @@
             goto out_bad_data;
         }
 
-        if (!(subsys = strsep(&next, ":"))) {
+        if (!(found_subsys = strsep(&next, ":"))) {
             goto out_bad_data;
         }
 
-        if (strcmp(subsys, "cpu")) {
+        if (strcmp(found_subsys, subsys)) {
             /* Not the subsys we're looking for */
             continue;
         }
@@ -200,7 +206,7 @@
         return 0;
     }
 
-    SLOGE("Failed to find cpu subsys");
+    SLOGE("Failed to find subsys %s", subsys);
     fclose(fp);
     return -1;
  out_bad_data:
@@ -222,7 +228,23 @@
 
     if (__sys_supports_schedgroups) {
         char grpBuf[32];
-        if (getSchedulerGroup(tid, grpBuf, sizeof(grpBuf)) < 0)
+#ifdef USE_CPUSETS
+        if (getCGroupSubsys(tid, "cpuset", grpBuf, sizeof(grpBuf)) < 0)
+            return -1;
+        if (grpBuf[0] == '\0') {
+            *policy = SP_FOREGROUND;
+        } else if (!strcmp(grpBuf, "foreground")) {
+            *policy = SP_FOREGROUND;
+        } else if (!strcmp(grpBuf, "background")) {
+            *policy = SP_BACKGROUND;
+        } else if (!strcmp(grpBuf, "top-app")) {
+            *policy = SP_TOP_APP;
+        } else {
+            errno = ERANGE;
+            return -1;
+        }
+#else
+        if (getCGroupSubsys(tid, "cpu", grpBuf, sizeof(grpBuf)) < 0)
             return -1;
         if (grpBuf[0] == '\0') {
             *policy = SP_FOREGROUND;
@@ -232,6 +254,7 @@
             errno = ERANGE;
             return -1;
         }
+#endif
     } else {
         int rc = sched_getscheduler(tid);
         if (rc < 0)
@@ -260,8 +283,8 @@
     policy = _policy(policy);
     pthread_once(&the_once, __initialize);
 
-    int fd;
-    int boost_fd;
+    int fd = -1;
+    int boost_fd = -1;
     switch (policy) {
     case SP_BACKGROUND:
         fd = bg_cpuset_fd;
@@ -273,6 +296,14 @@
         fd = fg_cpuset_fd;
         boost_fd = fg_schedboost_fd;
         break;
+    case SP_TOP_APP :
+        fd = ta_cpuset_fd;
+        boost_fd = fg_schedboost_fd;
+        break;
+    case SP_SYSTEM:
+        fd = system_bg_cpuset_fd;
+        boost_fd = bg_schedboost_fd;
+        break;
     default:
         boost_fd = fd = -1;
         break;
@@ -330,6 +361,7 @@
     case SP_FOREGROUND:
     case SP_AUDIO_APP:
     case SP_AUDIO_SYS:
+    case SP_TOP_APP:
         SLOGD("^^^ tid %d (%s)", tid, thread_name);
         break;
     case SP_SYSTEM:
@@ -350,6 +382,7 @@
         case SP_FOREGROUND:
         case SP_AUDIO_APP:
         case SP_AUDIO_SYS:
+        case SP_TOP_APP:
             fd = fg_cgroup_fd;
             break;
         default:
@@ -404,6 +437,7 @@
        [SP_SYSTEM]     = "  ",
        [SP_AUDIO_APP]  = "aa",
        [SP_AUDIO_SYS]  = "as",
+       [SP_TOP_APP]    = "ta",
     };
     if ((policy < SP_CNT) && (strings[policy] != NULL))
         return strings[policy];
diff --git a/liblog/Android.bp b/liblog/Android.bp
index 7a95dbd..1051016 100644
--- a/liblog/Android.bp
+++ b/liblog/Android.bp
@@ -78,6 +78,7 @@
 
     cflags: [
         "-Werror",
+        "-fvisibility=hidden",
         // This is what we want to do:
         //  liblog_cflags := $(shell \
         //   sed -n \
diff --git a/libmemunreachable/HeapWalker.cpp b/libmemunreachable/HeapWalker.cpp
index 19393ec..62366f2 100644
--- a/libmemunreachable/HeapWalker.cpp
+++ b/libmemunreachable/HeapWalker.cpp
@@ -14,7 +14,10 @@
  * limitations under the License.
  */
 
+#include <errno.h>
 #include <inttypes.h>
+#include <sys/mman.h>
+#include <unistd.h>
 
 #include <map>
 #include <utility>
@@ -22,6 +25,7 @@
 #include "Allocator.h"
 #include "HeapWalker.h"
 #include "LeakFolding.h"
+#include "ScopedSignalHandler.h"
 #include "log.h"
 
 bool HeapWalker::Allocation(uintptr_t begin, uintptr_t end) {
@@ -37,18 +41,26 @@
     return true;
   } else {
     Range overlap = inserted.first->first;
-    ALOGE("range %p-%p overlaps with existing range %p-%p",
-        reinterpret_cast<void*>(begin),
-        reinterpret_cast<void*>(end),
-        reinterpret_cast<void*>(overlap.begin),
-        reinterpret_cast<void*>(overlap.end));
+    if (overlap != range) {
+      ALOGE("range %p-%p overlaps with existing range %p-%p",
+          reinterpret_cast<void*>(begin),
+          reinterpret_cast<void*>(end),
+          reinterpret_cast<void*>(overlap.begin),
+          reinterpret_cast<void*>(overlap.end));
+    }
     return false;
   }
 }
 
-bool HeapWalker::IsAllocationPtr(uintptr_t ptr, Range* range, AllocationInfo** info) {
-  if (ptr >= valid_allocations_range_.begin && ptr < valid_allocations_range_.end) {
-    AllocationMap::iterator it = allocations_.find(Range{ptr, ptr + 1});
+bool HeapWalker::WordContainsAllocationPtr(uintptr_t word_ptr, Range* range, AllocationInfo** info) {
+  walking_ptr_ = word_ptr;
+  // This access may segfault if the process under test has done something strange,
+  // for example mprotect(PROT_NONE) on a native heap page.  If so, it will be
+  // caught and handled by mmaping a zero page over the faulting page.
+  uintptr_t value = *reinterpret_cast<uintptr_t*>(word_ptr);
+  walking_ptr_ = 0;
+  if (value >= valid_allocations_range_.begin && value < valid_allocations_range_.end) {
+    AllocationMap::iterator it = allocations_.find(Range{value, value + 1});
     if (it != allocations_.end()) {
       *range = it->first;
       *info = &it->second;
@@ -135,3 +147,30 @@
 
   return true;
 }
+
+static bool MapOverPage(void* addr) {
+  const size_t page_size = sysconf(_SC_PAGE_SIZE);
+  void *page = reinterpret_cast<void*>(reinterpret_cast<uintptr_t>(addr) & ~(page_size-1));
+
+  void* ret = mmap(page, page_size, PROT_READ, MAP_ANONYMOUS|MAP_PRIVATE|MAP_FIXED, -1, 0);
+  if (ret == MAP_FAILED) {
+    ALOGE("failed to map page at %p: %s", page, strerror(errno));
+    return false;
+  }
+
+  return true;
+}
+
+void HeapWalker::HandleSegFault(ScopedSignalHandler& handler, int signal, siginfo_t* si, void* /*uctx*/) {
+  uintptr_t addr = reinterpret_cast<uintptr_t>(si->si_addr);
+  if (addr != walking_ptr_) {
+    handler.reset();
+    return;
+  }
+  ALOGW("failed to read page at %p, signal %d", si->si_addr, signal);
+  if (!MapOverPage(si->si_addr)) {
+    handler.reset();
+  }
+}
+
+ScopedSignalHandler::SignalFn ScopedSignalHandler::handler_;
diff --git a/libmemunreachable/HeapWalker.h b/libmemunreachable/HeapWalker.h
index 7b851c4..3c1b513 100644
--- a/libmemunreachable/HeapWalker.h
+++ b/libmemunreachable/HeapWalker.h
@@ -17,9 +17,12 @@
 #ifndef LIBMEMUNREACHABLE_HEAP_WALKER_H_
 #define LIBMEMUNREACHABLE_HEAP_WALKER_H_
 
+#include <signal.h>
+
 #include "android-base/macros.h"
 
 #include "Allocator.h"
+#include "ScopedSignalHandler.h"
 #include "Tarjan.h"
 
 // A range [begin, end)
@@ -28,6 +31,12 @@
   uintptr_t end;
 
   size_t size() const { return end - begin; };
+  bool operator==(const Range& other) const {
+    return this->begin == other.begin && this->end == other.end;
+  }
+  bool operator!=(const Range& other) const {
+    return !(*this == other);
+  }
 };
 
 // Comparator for Ranges that returns equivalence for overlapping ranges
@@ -41,10 +50,17 @@
  public:
   HeapWalker(Allocator<HeapWalker> allocator) : allocator_(allocator),
     allocations_(allocator), allocation_bytes_(0),
-	roots_(allocator), root_vals_(allocator) {
+	roots_(allocator), root_vals_(allocator),
+	segv_handler_(allocator), walking_ptr_(0) {
     valid_allocations_range_.end = 0;
     valid_allocations_range_.begin = ~valid_allocations_range_.end;
+
+    segv_handler_.install(SIGSEGV,
+        [=](ScopedSignalHandler& handler, int signal, siginfo_t* siginfo, void* uctx) {
+          this->HandleSegFault(handler, signal, siginfo, uctx);
+      });
   }
+
   ~HeapWalker() {}
   bool Allocation(uintptr_t begin, uintptr_t end);
   void Root(uintptr_t begin, uintptr_t end);
@@ -70,7 +86,8 @@
  private:
 
   void RecurseRoot(const Range& root);
-  bool IsAllocationPtr(uintptr_t ptr, Range* range, AllocationInfo** info);
+  bool WordContainsAllocationPtr(uintptr_t ptr, Range* range, AllocationInfo** info);
+  void HandleSegFault(ScopedSignalHandler&, int, siginfo_t*, void*);
 
   DISALLOW_COPY_AND_ASSIGN(HeapWalker);
   Allocator<HeapWalker> allocator_;
@@ -81,6 +98,9 @@
 
   allocator::vector<Range> roots_;
   allocator::vector<uintptr_t> root_vals_;
+
+  ScopedSignalHandler segv_handler_;
+  uintptr_t walking_ptr_;
 };
 
 template<class F>
@@ -92,7 +112,7 @@
   for (uintptr_t i = begin; i < range.end; i += sizeof(uintptr_t)) {
     Range ref_range;
     AllocationInfo* ref_info;
-    if (IsAllocationPtr(*reinterpret_cast<uintptr_t*>(i), &ref_range, &ref_info)) {
+    if (WordContainsAllocationPtr(i, &ref_range, &ref_info)) {
       f(ref_range, ref_info);
     }
   }
diff --git a/libmemunreachable/ScopedSignalHandler.h b/libmemunreachable/ScopedSignalHandler.h
new file mode 100644
index 0000000..e006d43
--- /dev/null
+++ b/libmemunreachable/ScopedSignalHandler.h
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef LIBMEMUNREACHABLE_SCOPED_SIGNAL_HANDLER_H_
+#define LIBMEMUNREACHABLE_SCOPED_SIGNAL_HANDLER_H_
+
+#include <errno.h>
+#include <signal.h>
+
+#include <functional>
+
+#include "android-base/macros.h"
+
+#include "log.h"
+
+class ScopedSignalHandler {
+ public:
+  using Fn = std::function<void(ScopedSignalHandler&, int, siginfo_t*, void*)>;
+
+  ScopedSignalHandler(Allocator<Fn> allocator) : allocator_(allocator), signal_(-1) {}
+  ~ScopedSignalHandler() {
+    reset();
+  }
+
+  template <class F>
+  void install(int signal, F&& f) {
+    LOG_ALWAYS_FATAL_IF(signal_ != -1, "ScopedSignalHandler already installed");
+
+    handler_ = SignalFn(std::allocator_arg, allocator_,
+        [=](int signal, siginfo_t* si, void* uctx) {
+          f(*this, signal, si, uctx);
+        });
+
+    struct sigaction act{};
+    act.sa_sigaction = [](int signal, siginfo_t* si, void* uctx) {
+      handler_(signal, si, uctx);
+    };
+    act.sa_flags = SA_SIGINFO;
+
+    int ret = sigaction(signal, &act, &old_act_);
+    if (ret < 0) {
+      LOG_ALWAYS_FATAL("failed to install segfault handler: %s", strerror(errno));
+    }
+
+    signal_ = signal;
+  }
+
+  void reset() {
+    if (signal_ != -1) {
+      int ret = sigaction(signal_, &old_act_, NULL);
+      if (ret < 0) {
+        ALOGE("failed to uninstall segfault handler");
+      }
+      handler_ = SignalFn{};
+      signal_ = -1;
+    }
+  }
+
+
+ private:
+  using SignalFn = std::function<void(int, siginfo_t*, void*)>;
+  DISALLOW_COPY_AND_ASSIGN(ScopedSignalHandler);
+  Allocator<Fn> allocator_;
+  int signal_;
+  struct sigaction old_act_;
+  // TODO(ccross): to support multiple ScopedSignalHandlers handler_ would need
+  // to be a static map of signals to handlers, but allocated with Allocator.
+  static SignalFn handler_;
+};
+
+#endif // LIBMEMUNREACHABLE_SCOPED_SIGNAL_HANDLER_H_
diff --git a/libmemunreachable/tests/HeapWalker_test.cpp b/libmemunreachable/tests/HeapWalker_test.cpp
index c3e1c4d..98e4aa1 100644
--- a/libmemunreachable/tests/HeapWalker_test.cpp
+++ b/libmemunreachable/tests/HeapWalker_test.cpp
@@ -14,6 +14,9 @@
  * limitations under the License.
  */
 
+#include <sys/mman.h>
+#include <unistd.h>
+
 #include "HeapWalker.h"
 
 #include <gtest/gtest.h>
@@ -172,3 +175,27 @@
   EXPECT_EQ(2*sizeof(uintptr_t), leaked_bytes);
   ASSERT_EQ(2U, leaked.size());
 }
+
+TEST_F(HeapWalkerTest, segv) {
+  const size_t page_size = sysconf(_SC_PAGE_SIZE);
+  void* buffer1 = mmap(NULL, page_size, PROT_NONE, MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
+  ASSERT_NE(buffer1, nullptr);
+  void* buffer2;
+
+  buffer2 = &buffer1;
+
+  HeapWalker heap_walker(heap_);
+  heap_walker.Allocation(buffer_begin(buffer1), buffer_begin(buffer1)+page_size);
+  heap_walker.Root(buffer_begin(buffer2), buffer_end(buffer2));
+
+  ASSERT_EQ(true, heap_walker.DetectLeaks());
+
+  allocator::vector<Range> leaked(heap_);
+  size_t num_leaks = 0;
+  size_t leaked_bytes = 0;
+  ASSERT_EQ(true, heap_walker.Leaked(leaked, 100, &num_leaks, &leaked_bytes));
+
+  EXPECT_EQ(0U, num_leaks);
+  EXPECT_EQ(0U, leaked_bytes);
+  ASSERT_EQ(0U, leaked.size());
+}
diff --git a/libnativeloader/native_loader.cpp b/libnativeloader/native_loader.cpp
index e20c823..665b5b5 100644
--- a/libnativeloader/native_loader.cpp
+++ b/libnativeloader/native_loader.cpp
@@ -21,6 +21,7 @@
 #ifdef __ANDROID__
 #include <android/dlext.h>
 #include "cutils/properties.h"
+#define LOG_TAG "libnativeloader"
 #include "log/log.h"
 #endif
 
@@ -47,16 +48,25 @@
                               jobject class_loader,
                               bool is_shared,
                               jstring java_library_path,
-                              jstring java_permitted_path) {
+                              jstring java_permitted_path,
+                              int32_t target_sdk_version) {
     ScopedUtfChars library_path(env, java_library_path);
 
     std::string permitted_path;
     if (java_permitted_path != nullptr) {
       ScopedUtfChars path(env, java_permitted_path);
       permitted_path = path.c_str();
+    } else {
+      // (http://b/27588281) This is a workaround for apps using custom
+      // classloaders and calling System.load() with an absolute path which
+      // is outside of the classloader library search path.
+      //
+      // This part effectively allows such a classloader to access anything
+      // under /data
+      permitted_path = "/data";
     }
 
-    if (!initialized_ && !InitPublicNamespace(library_path.c_str())) {
+    if (!initialized_ && !InitPublicNamespace(library_path.c_str(), target_sdk_version)) {
       return nullptr;
     }
 
@@ -74,7 +84,7 @@
                                   nullptr,
                                   library_path.c_str(),
                                   namespace_type,
-                                  java_permitted_path != nullptr ?
+                                  !permitted_path.empty() ?
                                       permitted_path.c_str() :
                                       nullptr);
 
@@ -143,12 +153,15 @@
     return true;
   }
 
-  bool InitPublicNamespace(const char* library_path) {
+  bool InitPublicNamespace(const char* library_path, int32_t target_sdk_version) {
+    std::string publicNativeLibraries = public_libraries_;
+
+    UNUSED(target_sdk_version);
     // (http://b/25844435) - Some apps call dlopen from generated code (mono jited
     // code is one example) unknown to linker in which  case linker uses anonymous
     // namespace. The second argument specifies the search path for the anonymous
     // namespace which is the library_path of the classloader.
-    initialized_ = android_init_namespaces(public_libraries_.c_str(), library_path);
+    initialized_ = android_init_namespaces(publicNativeLibraries.c_str(), library_path);
 
     return initialized_;
   }
@@ -186,7 +199,8 @@
                                                  class_loader,
                                                  is_shared,
                                                  library_path,
-                                                 permitted_path);
+                                                 permitted_path,
+                                                 target_sdk_version);
   if (ns == nullptr) {
     return env->NewStringUTF(dlerror());
   }
@@ -214,7 +228,7 @@
   if (ns == nullptr) {
     // This is the case where the classloader was not created by ApplicationLoaders
     // In this case we create an isolated not-shared namespace for it.
-    ns = g_namespaces->Create(env, class_loader, false, library_path, nullptr);
+    ns = g_namespaces->Create(env, class_loader, false, library_path, nullptr, target_sdk_version);
     if (ns == nullptr) {
       return nullptr;
     }
diff --git a/libnetutils/Android.mk b/libnetutils/Android.mk
index 281b6c8..ce7c3ba 100644
--- a/libnetutils/Android.mk
+++ b/libnetutils/Android.mk
@@ -4,7 +4,6 @@
 LOCAL_SRC_FILES := \
         dhcpclient.c \
         dhcpmsg.c \
-        dhcp_utils.c \
         ifc_utils.c \
         packet.c
 
diff --git a/libnetutils/dhcp_utils.c b/libnetutils/dhcp_utils.c
deleted file mode 100644
index c6b9fe4..0000000
--- a/libnetutils/dhcp_utils.c
+++ /dev/null
@@ -1,372 +0,0 @@
-/*
- * Copyright 2008, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/* Utilities for managing the dhcpcd DHCP client daemon */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <arpa/inet.h>
-#include <netinet/in.h>
-
-#include <cutils/properties.h>
-
-static const char DAEMON_NAME[]        = "dhcpcd";
-static const char DAEMON_PROP_NAME[]   = "init.svc.dhcpcd";
-static const char HOSTNAME_PROP_NAME[] = "net.hostname";
-static const char DHCP_PROP_NAME_PREFIX[]  = "dhcp";
-static const char DHCP_CONFIG_PATH[]   = "/system/etc/dhcpcd/dhcpcd.conf";
-static const int NAP_TIME = 200;   /* wait for 200ms at a time */
-                                  /* when polling for property values */
-static const char DAEMON_NAME_RENEW[]  = "iprenew";
-static char errmsg[100] = "\0";
-/* interface length for dhcpcd daemon start (dhcpcd_<interface> as defined in init.rc file)
- * or for filling up system properties dhcpcd.<interface>.ipaddress, dhcpcd.<interface>.dns1
- * and other properties on a successful bind
- */
-#define MAX_INTERFACE_LENGTH 25
-
-/*
- * P2p interface names increase sequentially p2p-p2p0-1, p2p-p2p0-2.. after
- * group formation. This does not work well with system properties which can quickly
- * exhaust or for specifiying a dhcp start target in init which requires
- * interface to be pre-defined in init.rc file.
- *
- * This function returns a common string p2p for all p2p interfaces.
- */
-void get_p2p_interface_replacement(const char *interface, char *p2p_interface) {
-    /* Use p2p for any interface starting with p2p. */
-    if (strncmp(interface, "p2p",3) == 0) {
-        strncpy(p2p_interface, "p2p", MAX_INTERFACE_LENGTH);
-    } else {
-        strncpy(p2p_interface, interface, MAX_INTERFACE_LENGTH);
-    }
-}
-
-/*
- * Wait for a system property to be assigned a specified value.
- * If desired_value is NULL, then just wait for the property to
- * be created with any value. maxwait is the maximum amount of
- * time in seconds to wait before giving up.
- */
-static int wait_for_property(const char *name, const char *desired_value, int maxwait)
-{
-    char value[PROPERTY_VALUE_MAX] = {'\0'};
-    int maxnaps = (maxwait * 1000) / NAP_TIME;
-
-    if (maxnaps < 1) {
-        maxnaps = 1;
-    }
-
-    while (maxnaps-- >= 0) {
-        if (property_get(name, value, NULL)) {
-            if (desired_value == NULL ||
-                    strcmp(value, desired_value) == 0) {
-                return 0;
-            }
-        }
-        if (maxnaps >= 0) {
-            usleep(NAP_TIME * 1000);
-        }
-    }
-    return -1; /* failure */
-}
-
-static int fill_ip_info(const char *interface,
-                     char *ipaddr,
-                     char *gateway,
-                     uint32_t *prefixLength,
-                     char *dns[],
-                     char *server,
-                     uint32_t *lease,
-                     char *vendorInfo,
-                     char *domain,
-                     char *mtu)
-{
-    char prop_name[PROPERTY_KEY_MAX];
-    char prop_value[PROPERTY_VALUE_MAX];
-    /* Interface name after converting p2p0-p2p0-X to p2p to reuse system properties */
-    char p2p_interface[MAX_INTERFACE_LENGTH];
-    int x;
-
-    get_p2p_interface_replacement(interface, p2p_interface);
-
-    snprintf(prop_name, sizeof(prop_name), "%s.%s.ipaddress", DHCP_PROP_NAME_PREFIX, p2p_interface);
-    property_get(prop_name, ipaddr, NULL);
-
-    snprintf(prop_name, sizeof(prop_name), "%s.%s.gateway", DHCP_PROP_NAME_PREFIX, p2p_interface);
-    property_get(prop_name, gateway, NULL);
-
-    snprintf(prop_name, sizeof(prop_name), "%s.%s.server", DHCP_PROP_NAME_PREFIX, p2p_interface);
-    property_get(prop_name, server, NULL);
-
-    //TODO: Handle IPv6 when we change system property usage
-    if (gateway[0] == '\0' || strncmp(gateway, "0.0.0.0", 7) == 0) {
-        //DHCP server is our best bet as gateway
-        strncpy(gateway, server, PROPERTY_VALUE_MAX);
-    }
-
-    snprintf(prop_name, sizeof(prop_name), "%s.%s.mask", DHCP_PROP_NAME_PREFIX, p2p_interface);
-    if (property_get(prop_name, prop_value, NULL)) {
-        int p;
-        // this conversion is v4 only, but this dhcp client is v4 only anyway
-        in_addr_t mask = ntohl(inet_addr(prop_value));
-        // Check netmask is a valid IP address.  ntohl gives NONE response (all 1's) for
-        // non 255.255.255.255 inputs.  if we get that value check if it is legit..
-        if (mask == INADDR_NONE && strcmp(prop_value, "255.255.255.255") != 0) {
-            snprintf(errmsg, sizeof(errmsg), "DHCP gave invalid net mask %s", prop_value);
-            return -1;
-        }
-        for (p = 0; p < 32; p++) {
-            if (mask == 0) break;
-            // check for non-contiguous netmask, e.g., 255.254.255.0
-            if ((mask & 0x80000000) == 0) {
-                snprintf(errmsg, sizeof(errmsg), "DHCP gave invalid net mask %s", prop_value);
-                return -1;
-            }
-            mask = mask << 1;
-        }
-        *prefixLength = p;
-    }
-
-    for (x=0; dns[x] != NULL; x++) {
-        snprintf(prop_name, sizeof(prop_name), "%s.%s.dns%d", DHCP_PROP_NAME_PREFIX, p2p_interface, x+1);
-        property_get(prop_name, dns[x], NULL);
-    }
-
-    snprintf(prop_name, sizeof(prop_name), "%s.%s.leasetime", DHCP_PROP_NAME_PREFIX, p2p_interface);
-    if (property_get(prop_name, prop_value, NULL)) {
-        *lease = atol(prop_value);
-    }
-
-    snprintf(prop_name, sizeof(prop_name), "%s.%s.vendorInfo", DHCP_PROP_NAME_PREFIX,
-            p2p_interface);
-    property_get(prop_name, vendorInfo, NULL);
-
-    snprintf(prop_name, sizeof(prop_name), "%s.%s.domain", DHCP_PROP_NAME_PREFIX,
-            p2p_interface);
-    property_get(prop_name, domain, NULL);
-
-    snprintf(prop_name, sizeof(prop_name), "%s.%s.mtu", DHCP_PROP_NAME_PREFIX,
-            p2p_interface);
-    property_get(prop_name, mtu, NULL);
-
-    return 0;
-}
-
-/*
- * Get any available DHCP results.
- */
-int dhcp_get_results(const char *interface,
-                     char *ipaddr,
-                     char *gateway,
-                     uint32_t *prefixLength,
-                     char *dns[],
-                     char *server,
-                     uint32_t *lease,
-                     char *vendorInfo,
-                     char *domain,
-                     char *mtu)
-{
-    char result_prop_name[PROPERTY_KEY_MAX];
-    char prop_value[PROPERTY_VALUE_MAX];
-
-    /* Interface name after converting p2p0-p2p0-X to p2p to reuse system properties */
-    char p2p_interface[MAX_INTERFACE_LENGTH];
-    get_p2p_interface_replacement(interface, p2p_interface);
-    snprintf(result_prop_name, sizeof(result_prop_name), "%s.%s.result",
-            DHCP_PROP_NAME_PREFIX,
-            p2p_interface);
-
-    memset(prop_value, '\0', PROPERTY_VALUE_MAX);
-    if (!property_get(result_prop_name, prop_value, NULL)) {
-        snprintf(errmsg, sizeof(errmsg), "%s", "DHCP result property was not set");
-        return -1;
-    }
-    if (strcmp(prop_value, "ok") == 0) {
-        if (fill_ip_info(interface, ipaddr, gateway, prefixLength, dns,
-                server, lease, vendorInfo, domain, mtu) == -1) {
-            return -1;
-        }
-        return 0;
-    } else {
-        snprintf(errmsg, sizeof(errmsg), "DHCP result was %s", prop_value);
-        return -1;
-    }
-}
-
-/*
- * Start the dhcp client daemon, and wait for it to finish
- * configuring the interface.
- *
- * The device init.rc file needs a corresponding entry for this work.
- *
- * Example:
- * service dhcpcd_<interface> /system/bin/dhcpcd -ABKL -f dhcpcd.conf
- */
-int dhcp_start(const char *interface)
-{
-    char result_prop_name[PROPERTY_KEY_MAX];
-    char daemon_prop_name[PROPERTY_KEY_MAX];
-    char prop_value[PROPERTY_VALUE_MAX] = {'\0'};
-    char daemon_cmd[PROPERTY_VALUE_MAX * 2 + sizeof(DHCP_CONFIG_PATH)];
-    const char *ctrl_prop = "ctl.start";
-    const char *desired_status = "running";
-    /* Interface name after converting p2p0-p2p0-X to p2p to reuse system properties */
-    char p2p_interface[MAX_INTERFACE_LENGTH];
-
-    get_p2p_interface_replacement(interface, p2p_interface);
-
-    snprintf(result_prop_name, sizeof(result_prop_name), "%s.%s.result",
-            DHCP_PROP_NAME_PREFIX,
-            p2p_interface);
-
-    snprintf(daemon_prop_name, sizeof(daemon_prop_name), "%s_%s",
-            DAEMON_PROP_NAME,
-            p2p_interface);
-
-    /* Erase any previous setting of the dhcp result property */
-    property_set(result_prop_name, "");
-
-    /* Start the daemon and wait until it's ready */
-    if (property_get(HOSTNAME_PROP_NAME, prop_value, NULL) && (prop_value[0] != '\0'))
-        snprintf(daemon_cmd, sizeof(daemon_cmd), "%s_%s:-f %s -h %s %s", DAEMON_NAME,
-                 p2p_interface, DHCP_CONFIG_PATH, prop_value, interface);
-    else
-        snprintf(daemon_cmd, sizeof(daemon_cmd), "%s_%s:-f %s %s", DAEMON_NAME,
-                 p2p_interface, DHCP_CONFIG_PATH, interface);
-    memset(prop_value, '\0', PROPERTY_VALUE_MAX);
-    property_set(ctrl_prop, daemon_cmd);
-    if (wait_for_property(daemon_prop_name, desired_status, 10) < 0) {
-        snprintf(errmsg, sizeof(errmsg), "%s", "Timed out waiting for dhcpcd to start");
-        return -1;
-    }
-
-    /* Wait for the daemon to return a result */
-    if (wait_for_property(result_prop_name, NULL, 30) < 0) {
-        snprintf(errmsg, sizeof(errmsg), "%s", "Timed out waiting for DHCP to finish");
-        return -1;
-    }
-
-    return 0;
-}
-
-/**
- * Stop the DHCP client daemon.
- */
-int dhcp_stop(const char *interface)
-{
-    char result_prop_name[PROPERTY_KEY_MAX];
-    char daemon_prop_name[PROPERTY_KEY_MAX];
-    char daemon_cmd[PROPERTY_VALUE_MAX * 2];
-    const char *ctrl_prop = "ctl.stop";
-    const char *desired_status = "stopped";
-
-    char p2p_interface[MAX_INTERFACE_LENGTH];
-
-    get_p2p_interface_replacement(interface, p2p_interface);
-
-    snprintf(result_prop_name, sizeof(result_prop_name), "%s.%s.result",
-            DHCP_PROP_NAME_PREFIX,
-            p2p_interface);
-
-    snprintf(daemon_prop_name, sizeof(daemon_prop_name), "%s_%s",
-            DAEMON_PROP_NAME,
-            p2p_interface);
-
-    snprintf(daemon_cmd, sizeof(daemon_cmd), "%s_%s", DAEMON_NAME, p2p_interface);
-
-    /* Stop the daemon and wait until it's reported to be stopped */
-    property_set(ctrl_prop, daemon_cmd);
-    if (wait_for_property(daemon_prop_name, desired_status, 5) < 0) {
-        return -1;
-    }
-    property_set(result_prop_name, "failed");
-    return 0;
-}
-
-/**
- * Release the current DHCP client lease.
- */
-int dhcp_release_lease(const char *interface)
-{
-    char daemon_prop_name[PROPERTY_KEY_MAX];
-    char daemon_cmd[PROPERTY_VALUE_MAX * 2];
-    const char *ctrl_prop = "ctl.stop";
-    const char *desired_status = "stopped";
-
-    char p2p_interface[MAX_INTERFACE_LENGTH];
-
-    get_p2p_interface_replacement(interface, p2p_interface);
-
-    snprintf(daemon_prop_name, sizeof(daemon_prop_name), "%s_%s",
-            DAEMON_PROP_NAME,
-            p2p_interface);
-
-    snprintf(daemon_cmd, sizeof(daemon_cmd), "%s_%s", DAEMON_NAME, p2p_interface);
-
-    /* Stop the daemon and wait until it's reported to be stopped */
-    property_set(ctrl_prop, daemon_cmd);
-    if (wait_for_property(daemon_prop_name, desired_status, 5) < 0) {
-        return -1;
-    }
-    return 0;
-}
-
-char *dhcp_get_errmsg() {
-    return errmsg;
-}
-
-/**
- * The device init.rc file needs a corresponding entry.
- *
- * Example:
- * service iprenew_<interface> /system/bin/dhcpcd -n
- *
- */
-int dhcp_start_renew(const char *interface)
-{
-    char result_prop_name[PROPERTY_KEY_MAX];
-    char prop_value[PROPERTY_VALUE_MAX] = {'\0'};
-    char daemon_cmd[PROPERTY_VALUE_MAX * 2];
-    const char *ctrl_prop = "ctl.start";
-
-    char p2p_interface[MAX_INTERFACE_LENGTH];
-
-    get_p2p_interface_replacement(interface, p2p_interface);
-
-    snprintf(result_prop_name, sizeof(result_prop_name), "%s.%s.result",
-            DHCP_PROP_NAME_PREFIX,
-            p2p_interface);
-
-    /* Erase any previous setting of the dhcp result property */
-    property_set(result_prop_name, "");
-
-    /* Start the renew daemon and wait until it's ready */
-    snprintf(daemon_cmd, sizeof(daemon_cmd), "%s_%s:%s", DAEMON_NAME_RENEW,
-            p2p_interface, interface);
-    memset(prop_value, '\0', PROPERTY_VALUE_MAX);
-    property_set(ctrl_prop, daemon_cmd);
-
-    /* Wait for the daemon to return a result */
-    if (wait_for_property(result_prop_name, NULL, 30) < 0) {
-        snprintf(errmsg, sizeof(errmsg), "%s", "Timed out waiting for DHCP Renew to finish");
-        return -1;
-    }
-
-    return 0;
-}
diff --git a/libnetutils/dhcptool.c b/libnetutils/dhcptool.c
index 352ac5e..a2d3869 100644
--- a/libnetutils/dhcptool.c
+++ b/libnetutils/dhcptool.c
@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 
+#include <err.h>
 #include <errno.h>
 #include <error.h>
 #include <stdbool.h>
@@ -29,12 +30,14 @@
 
   char* interface = argv[1];
   if (ifc_init()) {
-    error(EXIT_FAILURE, errno, "dhcptool %s: ifc_init failed", interface);
+    err(errno, "dhcptool %s: ifc_init failed", interface);
+    ifc_close();
+    return EXIT_FAILURE;
   }
 
   int rc = do_dhcp(interface);
   if (rc) {
-    error(0, errno, "dhcptool %s: do_dhcp failed", interface);
+    err(errno, "dhcptool %s: do_dhcp failed", interface);
   }
 
   ifc_close();
diff --git a/libnetutils/ifc_utils.c b/libnetutils/ifc_utils.c
index f9f62f8..eae32ce 100644
--- a/libnetutils/ifc_utils.c
+++ b/libnetutils/ifc_utils.c
@@ -19,6 +19,7 @@
 #include <unistd.h>
 #include <string.h>
 #include <errno.h>
+#include <pthread.h>
 
 #include <sys/socket.h>
 #include <sys/select.h>
@@ -57,6 +58,8 @@
 
 static int ifc_ctl_sock = -1;
 static int ifc_ctl_sock6 = -1;
+static pthread_mutex_t ifc_sock_mutex = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;
+static pthread_mutex_t ifc_sock6_mutex = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;
 void printerr(char *fmt, ...);
 
 #define DBG 0
@@ -122,6 +125,8 @@
 int ifc_init(void)
 {
     int ret;
+
+    pthread_mutex_lock(&ifc_sock_mutex);
     if (ifc_ctl_sock == -1) {
         ifc_ctl_sock = socket(AF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
         if (ifc_ctl_sock < 0) {
@@ -136,6 +141,7 @@
 
 int ifc_init6(void)
 {
+    pthread_mutex_lock(&ifc_sock6_mutex);
     if (ifc_ctl_sock6 == -1) {
         ifc_ctl_sock6 = socket(AF_INET6, SOCK_DGRAM | SOCK_CLOEXEC, 0);
         if (ifc_ctl_sock6 < 0) {
@@ -152,6 +158,7 @@
         (void)close(ifc_ctl_sock);
         ifc_ctl_sock = -1;
     }
+    pthread_mutex_unlock(&ifc_sock_mutex);
 }
 
 void ifc_close6(void)
@@ -160,6 +167,7 @@
         (void)close(ifc_ctl_sock6);
         ifc_ctl_sock6 = -1;
     }
+    pthread_mutex_unlock(&ifc_sock6_mutex);
 }
 
 static void ifc_init_ifr(const char *name, struct ifreq *ifr)
@@ -553,6 +561,7 @@
     ifc_init();
 
     if (ifc_ctl_sock < 0) {
+        ifc_close();
         return -errno;
     }
 
diff --git a/libprocessgroup/Android.mk b/libprocessgroup/Android.mk
index ee6ba58..1885fa5 100644
--- a/libprocessgroup/Android.mk
+++ b/libprocessgroup/Android.mk
@@ -7,14 +7,4 @@
 LOCAL_C_INCLUDES := $(LOCAL_PATH)/include
 LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)/include
 LOCAL_CFLAGS := -Wall -Werror
-LOCAL_REQUIRED_MODULE := processgroup_cleanup
 include $(BUILD_SHARED_LIBRARY)
-
-include $(CLEAR_VARS)
-LOCAL_SRC_FILES := cleanup.cpp
-LOCAL_MODULE := processgroup_cleanup
-LOCAL_C_INCLUDES := $(LOCAL_PATH)/include
-LOCAL_CFLAGS := -Wall -Werror
-LOCAL_FORCE_STATIC_EXECUTABLE := true
-LOCAL_STATIC_LIBRARIES := libc libcutils
-include $(BUILD_EXECUTABLE)
diff --git a/libprocessgroup/cleanup.cpp b/libprocessgroup/cleanup.cpp
deleted file mode 100644
index cca8dc4..0000000
--- a/libprocessgroup/cleanup.cpp
+++ /dev/null
@@ -1,31 +0,0 @@
-/*
- *  Copyright 2014 Google, Inc
- *
- *  Licensed under the Apache License, Version 2.0 (the "License");
- *  you may not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS,
- *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-#include <string.h>
-#include <unistd.h>
-#include <sys/syslimits.h>
-
-#include "processgroup_priv.h"
-
-int main(int argc, char **argv)
-{
-    char buf[PATH_MAX];
-    if (argc != 2)
-        return -1;
-
-    memcpy(buf, PROCESSGROUP_CGROUP_PATH, sizeof(PROCESSGROUP_CGROUP_PATH));
-    strlcat(buf, argv[1], sizeof(buf));
-    return rmdir(buf);
-}
diff --git a/libprocessgroup/processgroup.cpp b/libprocessgroup/processgroup.cpp
index 00a0357..cfc9ae2 100644
--- a/libprocessgroup/processgroup.cpp
+++ b/libprocessgroup/processgroup.cpp
@@ -22,6 +22,7 @@
 #include <errno.h>
 #include <fcntl.h>
 #include <inttypes.h>
+#include <mutex>
 #include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -36,7 +37,30 @@
 #include <utils/SystemClock.h>
 
 #include <processgroup/processgroup.h>
-#include "processgroup_priv.h"
+
+// Uncomment line below use memory cgroups for keeping track of (forked) PIDs
+// #define USE_MEMCG 1
+
+#define MEM_CGROUP_PATH "/dev/memcg/apps"
+#define MEM_CGROUP_TASKS "/dev/memcg/apps/tasks"
+#define ACCT_CGROUP_PATH "/acct"
+
+#define PROCESSGROUP_UID_PREFIX "uid_"
+#define PROCESSGROUP_PID_PREFIX "pid_"
+#define PROCESSGROUP_CGROUP_PROCS_FILE "/cgroup.procs"
+#define PROCESSGROUP_MAX_UID_LEN 11
+#define PROCESSGROUP_MAX_PID_LEN 11
+#define PROCESSGROUP_MAX_PATH_LEN \
+        ((sizeof(MEM_CGROUP_PATH) > sizeof(ACCT_CGROUP_PATH) ? \
+          sizeof(MEM_CGROUP_PATH) : sizeof(ACCT_CGROUP_PATH)) + \
+         sizeof(PROCESSGROUP_UID_PREFIX) + 1 + \
+         PROCESSGROUP_MAX_UID_LEN + \
+         sizeof(PROCESSGROUP_PID_PREFIX) + 1 + \
+         PROCESSGROUP_MAX_PID_LEN + \
+         sizeof(PROCESSGROUP_CGROUP_PROCS_FILE) + \
+         1)
+
+std::once_flag init_path_flag;
 
 struct ctx {
     bool initialized;
@@ -46,10 +70,25 @@
     size_t buf_len;
 };
 
+static const char* getCgroupRootPath() {
+#ifdef USE_MEMCG
+    static const char* cgroup_root_path = NULL;
+    std::call_once(init_path_flag, [&]() {
+            // Check if mem cgroup is mounted, only then check for write-access to avoid
+            // SELinux denials
+            cgroup_root_path = access(MEM_CGROUP_TASKS, F_OK) || access(MEM_CGROUP_PATH, W_OK) ?
+                    ACCT_CGROUP_PATH : MEM_CGROUP_PATH;
+            });
+    return cgroup_root_path;
+#else
+    return ACCT_CGROUP_PATH;
+#endif
+}
+
 static int convertUidToPath(char *path, size_t size, uid_t uid)
 {
     return snprintf(path, size, "%s/%s%d",
-            PROCESSGROUP_CGROUP_PATH,
+            getCgroupRootPath(),
             PROCESSGROUP_UID_PREFIX,
             uid);
 }
@@ -57,7 +96,7 @@
 static int convertUidPidToPath(char *path, size_t size, uid_t uid, int pid)
 {
     return snprintf(path, size, "%s/%s%d/%s%d",
-            PROCESSGROUP_CGROUP_PATH,
+            getCgroupRootPath(),
             PROCESSGROUP_UID_PREFIX,
             uid,
             PROCESSGROUP_PID_PREFIX,
@@ -188,9 +227,10 @@
 void removeAllProcessGroups()
 {
     SLOGV("removeAllProcessGroups()");
-    std::unique_ptr<DIR, decltype(&closedir)> root(opendir(PROCESSGROUP_CGROUP_PATH), closedir);
+    const char *cgroup_root_path = getCgroupRootPath();
+    std::unique_ptr<DIR, decltype(&closedir)> root(opendir(cgroup_root_path), closedir);
     if (root == NULL) {
-        SLOGE("failed to open %s: %s", PROCESSGROUP_CGROUP_PATH, strerror(errno));
+        SLOGE("failed to open %s: %s", cgroup_root_path, strerror(errno));
     } else {
         struct dirent cur;
         struct dirent *dir;
@@ -204,7 +244,7 @@
                 continue;
             }
 
-            snprintf(path, sizeof(path), "%s/%s", PROCESSGROUP_CGROUP_PATH, dir->d_name);
+            snprintf(path, sizeof(path), "%s/%s", cgroup_root_path, dir->d_name);
             removeUidProcessGroups(path);
             SLOGV("removing %s\n", path);
             rmdir(path);
diff --git a/libprocessgroup/processgroup_priv.h b/libprocessgroup/processgroup_priv.h
deleted file mode 100644
index 1895bf9..0000000
--- a/libprocessgroup/processgroup_priv.h
+++ /dev/null
@@ -1,35 +0,0 @@
-/*
- *  Copyright 2014 Google, Inc
- *
- *  Licensed under the Apache License, Version 2.0 (the "License");
- *  you may not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS,
- *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-#ifndef _PROCESSGROUP_PRIV_H_
-#define _PROCESSGROUP_PRIV_H_
-
-#define PROCESSGROUP_CGROUP_PATH "/acct"
-#define PROCESSGROUP_UID_PREFIX "uid_"
-#define PROCESSGROUP_PID_PREFIX "pid_"
-#define PROCESSGROUP_CGROUP_PROCS_FILE "/cgroup.procs"
-#define PROCESSGROUP_MAX_UID_LEN 11
-#define PROCESSGROUP_MAX_PID_LEN 11
-#define PROCESSGROUP_MAX_PATH_LEN \
-        (sizeof(PROCESSGROUP_CGROUP_PATH) + \
-         sizeof(PROCESSGROUP_UID_PREFIX) + 1 + \
-         PROCESSGROUP_MAX_UID_LEN + \
-         sizeof(PROCESSGROUP_PID_PREFIX) + 1 + \
-         PROCESSGROUP_MAX_PID_LEN + \
-         sizeof(PROCESSGROUP_CGROUP_PROCS_FILE) + \
-         1)
-
-#endif
diff --git a/libsysutils/src/NetlinkEvent.cpp b/libsysutils/src/NetlinkEvent.cpp
index 23dcd62..739fad7 100644
--- a/libsysutils/src/NetlinkEvent.cpp
+++ b/libsysutils/src/NetlinkEvent.cpp
@@ -159,7 +159,7 @@
     struct ifaddrmsg *ifaddr = (struct ifaddrmsg *) NLMSG_DATA(nh);
     struct ifa_cacheinfo *cacheinfo = NULL;
     char addrstr[INET6_ADDRSTRLEN] = "";
-    char ifname[IFNAMSIZ];
+    char ifname[IFNAMSIZ] = "";
 
     if (!checkRtNetlinkLength(nh, sizeof(*ifaddr)))
         return false;
@@ -207,8 +207,7 @@
 
             // Find the interface name.
             if (!if_indextoname(ifaddr->ifa_index, ifname)) {
-                SLOGE("Unknown ifindex %d in %s", ifaddr->ifa_index, msgtype);
-                return false;
+                SLOGD("Unknown ifindex %d in %s", ifaddr->ifa_index, msgtype);
             }
 
         } else if (rta->rta_type == IFA_CACHEINFO) {
@@ -235,8 +234,7 @@
     mAction = (type == RTM_NEWADDR) ? Action::kAddressUpdated :
                                       Action::kAddressRemoved;
     mSubsystem = strdup("net");
-    asprintf(&mParams[0], "ADDRESS=%s/%d", addrstr,
-             ifaddr->ifa_prefixlen);
+    asprintf(&mParams[0], "ADDRESS=%s/%d", addrstr, ifaddr->ifa_prefixlen);
     asprintf(&mParams[1], "INTERFACE=%s", ifname);
     asprintf(&mParams[2], "FLAGS=%u", ifaddr->ifa_flags);
     asprintf(&mParams[3], "SCOPE=%u", ifaddr->ifa_scope);
diff --git a/libusbhost/usbhost.c b/libusbhost/usbhost.c
index b8e3215..299fdc4 100644
--- a/libusbhost/usbhost.c
+++ b/libusbhost/usbhost.c
@@ -617,6 +617,11 @@
     return ioctl(device->fd, USBDEVFS_BULK, &ctrl);
 }
 
+int usb_device_reset(struct usb_device *device)
+{
+    return ioctl(device->fd, USBDEVFS_RESET);
+}
+
 struct usb_request *usb_request_new(struct usb_device *dev,
         const struct usb_endpoint_descriptor *ep_desc)
 {
diff --git a/libutils/Android.mk b/libutils/Android.mk
index 6f88a6d..84bac32 100644
--- a/libutils/Android.mk
+++ b/libutils/Android.mk
@@ -106,19 +106,16 @@
 LOCAL_SANITIZE := integer
 include $(BUILD_SHARED_LIBRARY)
 
-# Include subdirectory makefiles
-# ============================================================
-
 include $(CLEAR_VARS)
 LOCAL_MODULE := SharedBufferTest
-LOCAL_STATIC_LIBRARIES := libutils libcutils
+LOCAL_STATIC_LIBRARIES := libutils
 LOCAL_SHARED_LIBRARIES := liblog
 LOCAL_SRC_FILES := SharedBufferTest.cpp
 include $(BUILD_NATIVE_TEST)
 
 include $(CLEAR_VARS)
 LOCAL_MODULE := SharedBufferTest
-LOCAL_STATIC_LIBRARIES := libutils libcutils
+LOCAL_STATIC_LIBRARIES := libutils
 LOCAL_SHARED_LIBRARIES := liblog
 LOCAL_SRC_FILES := SharedBufferTest.cpp
 include $(BUILD_HOST_NATIVE_TEST)
diff --git a/libutils/SharedBuffer.cpp b/libutils/SharedBuffer.cpp
index c7dd1ab..34d75ee 100644
--- a/libutils/SharedBuffer.cpp
+++ b/libutils/SharedBuffer.cpp
@@ -14,8 +14,6 @@
  * limitations under the License.
  */
 
-#define __STDC_LIMIT_MACROS
-#include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
 
diff --git a/libutils/SharedBufferTest.cpp b/libutils/SharedBufferTest.cpp
index a0484ff..33a4e0c 100644
--- a/libutils/SharedBufferTest.cpp
+++ b/libutils/SharedBufferTest.cpp
@@ -31,10 +31,10 @@
   // Check that null is returned, as we are asking for the whole address space.
   android::SharedBuffer* buf =
       android::SharedBuffer::alloc(SIZE_MAX - sizeof(android::SharedBuffer) - 1);
-  ASSERT_TRUE(NULL == buf);
+  ASSERT_EQ(nullptr, buf);
 
   buf = android::SharedBuffer::alloc(0);
-  ASSERT_FALSE(NULL == buf);
+  ASSERT_NE(nullptr, buf);
   ASSERT_EQ(0U, buf->size());
   buf->release();
 }
@@ -49,7 +49,7 @@
   // Make sure we don't die here.
   // Check that null is returned, as we are asking for the whole address space.
   buf = buf->editResize(SIZE_MAX - sizeof(android::SharedBuffer) - 1);
-  ASSERT_TRUE(NULL == buf);
+  ASSERT_EQ(nullptr, buf);
 
   buf = android::SharedBuffer::alloc(10);
   buf = buf->editResize(0);
diff --git a/libutils/Threads.cpp b/libutils/Threads.cpp
index 6dda6b5..def739f 100644
--- a/libutils/Threads.cpp
+++ b/libutils/Threads.cpp
@@ -668,6 +668,8 @@
 
 status_t Thread::run(const char* name, int32_t priority, size_t stack)
 {
+    LOG_ALWAYS_FATAL_IF(name == nullptr, "thread name not provided to Thread::run");
+
     Mutex::Autolock _l(mLock);
 
     if (mRunning) {
diff --git a/libutils/tests/Looper_test.cpp b/libutils/tests/Looper_test.cpp
index 00077e6..17319e0 100644
--- a/libutils/tests/Looper_test.cpp
+++ b/libutils/tests/Looper_test.cpp
@@ -138,7 +138,7 @@
 
 TEST_F(LooperTest, PollOnce_WhenNonZeroTimeoutAndAwokenWhileWaiting_PromptlyReturns) {
     sp<DelayedWake> delayedWake = new DelayedWake(100, mLooper);
-    delayedWake->run();
+    delayedWake->run("LooperTest");
 
     StopWatch stopWatch("pollOnce");
     int result = mLooper->pollOnce(1000);
@@ -251,7 +251,7 @@
     sp<DelayedWriteSignal> delayedWriteSignal = new DelayedWriteSignal(100, & pipe);
 
     handler.setCallback(mLooper, pipe.receiveFd, Looper::EVENT_INPUT);
-    delayedWriteSignal->run();
+    delayedWriteSignal->run("LooperTest");
 
     StopWatch stopWatch("pollOnce");
     int result = mLooper->pollOnce(1000);
diff --git a/libutils/tests/String8_test.cpp b/libutils/tests/String8_test.cpp
index c42c68d..01e64f6 100644
--- a/libutils/tests/String8_test.cpp
+++ b/libutils/tests/String8_test.cpp
@@ -72,4 +72,9 @@
     EXPECT_STREQ(src3, " Verify me.");
 }
 
+TEST_F(String8Test, SetToSizeMaxReturnsNoMemory) {
+    const char *in = "some string";
+    EXPECT_EQ(NO_MEMORY, String8("").setTo(in, SIZE_MAX));
+}
+
 }
diff --git a/libziparchive/zip_archive.cc b/libziparchive/zip_archive.cc
index a2d6fcc..1f27500 100644
--- a/libziparchive/zip_archive.cc
+++ b/libziparchive/zip_archive.cc
@@ -495,14 +495,20 @@
 }
 
 // Attempts to read |len| bytes into |buf| at offset |off|.
-// Callers should not rely on the |fd| offset being incremented
-// as a side effect of this call.
+// On non-Windows platforms, callers are guaranteed that the |fd|
+// offset is unchanged and there is no side effect to this call.
+//
+// On Windows platforms this is not thread-safe.
 static inline bool ReadAtOffset(int fd, uint8_t* buf, size_t len, off64_t off) {
+#if !defined(_WIN32)
+  return TEMP_FAILURE_RETRY(pread64(fd, buf, len, off));
+#else
   if (lseek64(fd, off, SEEK_SET) != off) {
     ALOGW("Zip: failed seek to offset %" PRId64, off);
     return false;
   }
   return android::base::ReadFully(fd, buf, len);
+#endif
 }
 
 static int32_t FindEntry(const ZipArchive* archive, const int ent,
diff --git a/lmkd/lmkd.c b/lmkd/lmkd.c
index aa3db8a..afc81ed 100644
--- a/lmkd/lmkd.c
+++ b/lmkd/lmkd.c
@@ -39,7 +39,7 @@
 #endif
 
 #define MEMCG_SYSFS_PATH "/dev/memcg/"
-#define MEMPRESSURE_WATCH_LEVEL "medium"
+#define MEMPRESSURE_WATCH_LEVEL "low"
 #define ZONEINFO_PATH "/proc/zoneinfo"
 #define LINE_MAX 128
 
@@ -77,12 +77,7 @@
 static int epollfd;
 static int maxevents;
 
-#define OOM_DISABLE (-17)
-/* inclusive */
-#define OOM_ADJUST_MIN (-16)
-#define OOM_ADJUST_MAX 15
-
-/* kernel OOM score values */
+/* OOM score values used by both kernel and framework */
 #define OOM_SCORE_ADJ_MIN       (-1000)
 #define OOM_SCORE_ADJ_MAX       1000
 
@@ -114,8 +109,8 @@
 static struct proc *pidhash[PIDHASH_SZ];
 #define pid_hashfn(x) ((((x) >> 8) ^ (x)) & (PIDHASH_SZ - 1))
 
-#define ADJTOSLOT(adj) (adj + -OOM_ADJUST_MIN)
-static struct adjslot_list procadjslot_list[ADJTOSLOT(OOM_ADJUST_MAX) + 1];
+#define ADJTOSLOT(adj) (adj + -OOM_SCORE_ADJ_MIN)
+static struct adjslot_list procadjslot_list[ADJTOSLOT(OOM_SCORE_ADJ_MAX) + 1];
 
 /*
  * Wait 1-2 seconds for the death report of a killed process prior to
@@ -148,14 +143,6 @@
     return ret;
 }
 
-static int lowmem_oom_adj_to_oom_score_adj(int oom_adj)
-{
-    if (oom_adj == OOM_ADJUST_MAX)
-        return OOM_SCORE_ADJ_MAX;
-    else
-        return (oom_adj * OOM_SCORE_ADJ_MAX) / -OOM_DISABLE;
-}
-
 static struct proc *pid_lookup(int pid) {
     struct proc *procp;
 
@@ -254,13 +241,13 @@
     char path[80];
     char val[20];
 
-    if (oomadj < OOM_DISABLE || oomadj > OOM_ADJUST_MAX) {
+    if (oomadj < OOM_SCORE_ADJ_MIN || oomadj > OOM_SCORE_ADJ_MAX) {
         ALOGE("Invalid PROCPRIO oomadj argument %d", oomadj);
         return;
     }
 
     snprintf(path, sizeof(path), "/proc/%d/oom_score_adj", pid);
-    snprintf(val, sizeof(val), "%d", lowmem_oom_adj_to_oom_score_adj(oomadj));
+    snprintf(val, sizeof(val), "%d", oomadj);
     writefilestring(path, val);
 
     if (use_inkernel_interface)
@@ -608,7 +595,7 @@
 static int find_and_kill_process(int other_free, int other_file, bool first)
 {
     int i;
-    int min_score_adj = OOM_ADJUST_MAX + 1;
+    int min_score_adj = OOM_SCORE_ADJ_MAX + 1;
     int minfree = 0;
     int killed_size = 0;
 
@@ -620,10 +607,10 @@
         }
     }
 
-    if (min_score_adj == OOM_ADJUST_MAX + 1)
+    if (min_score_adj == OOM_SCORE_ADJ_MAX + 1)
         return 0;
 
-    for (i = OOM_ADJUST_MAX; i >= min_score_adj; i--) {
+    for (i = OOM_SCORE_ADJ_MAX; i >= min_score_adj; i--) {
         struct proc *procp;
 
 retry:
@@ -784,7 +771,7 @@
             ALOGE("Kernel does not support memory pressure events or in-kernel low memory killer");
     }
 
-    for (i = 0; i <= ADJTOSLOT(OOM_ADJUST_MAX); i++) {
+    for (i = 0; i <= ADJTOSLOT(OOM_SCORE_ADJ_MAX); i++) {
         procadjslot_list[i].next = &procadjslot_list[i];
         procadjslot_list[i].prev = &procadjslot_list[i];
     }
diff --git a/rootdir/etc/public.libraries.android.txt b/rootdir/etc/public.libraries.android.txt
index 8db2ba8..e6c94ff 100644
--- a/rootdir/etc/public.libraries.android.txt
+++ b/rootdir/etc/public.libraries.android.txt
@@ -1,5 +1,6 @@
 libandroid.so
 libc.so
+libcamera2ndk.so
 libdl.so
 libEGL.so
 libGLESv1_CM.so
@@ -15,5 +16,6 @@
 libOpenSLES.so
 libRS.so
 libstdc++.so
+libvulkan.so
 libwebviewchromium_plat_support.so
 libz.so
diff --git a/rootdir/etc/public.libraries.wear.txt b/rootdir/etc/public.libraries.wear.txt
index 673e115..292730a 100644
--- a/rootdir/etc/public.libraries.wear.txt
+++ b/rootdir/etc/public.libraries.wear.txt
@@ -1,5 +1,6 @@
 libandroid.so
 libc.so
+libcamera2ndk.so
 libdl.so
 libEGL.so
 libGLESv1_CM.so
@@ -15,4 +16,5 @@
 libOpenSLES.so
 libRS.so
 libstdc++.so
+libvulkan.so
 libz.so
diff --git a/rootdir/init.rc b/rootdir/init.rc
index aa32343..7723a43 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -46,35 +46,26 @@
     mount cgroup none /acct cpuacct
     mkdir /acct/uid
 
-    # Create cgroup mount point for memory
-    mount tmpfs none /sys/fs/cgroup mode=0750,uid=0,gid=1000
-    mkdir /sys/fs/cgroup/memory 0750 root system
-    mount cgroup none /sys/fs/cgroup/memory memory
-    write /sys/fs/cgroup/memory/memory.move_charge_at_immigrate 1
-    chown root system /sys/fs/cgroup/memory/tasks
-    chmod 0660 /sys/fs/cgroup/memory/tasks
-    mkdir /sys/fs/cgroup/memory/sw 0750 root system
-    write /sys/fs/cgroup/memory/sw/memory.swappiness 100
-    write /sys/fs/cgroup/memory/sw/memory.move_charge_at_immigrate 1
-    chown root system /sys/fs/cgroup/memory/sw/tasks
-    chmod 0660 /sys/fs/cgroup/memory/sw/tasks
-
     # Create energy-aware scheduler tuning nodes
-    mkdir /sys/fs/cgroup/stune
-    mount cgroup none /sys/fs/cgroup/stune schedtune
-    mkdir /sys/fs/cgroup/stune/foreground
-    chown system system /sys/fs/cgroup/stune
-    chown system system /sys/fs/cgroup/stune/foreground
-    chown system system /sys/fs/cgroup/stune/tasks
-    chown system system /sys/fs/cgroup/stune/foreground/tasks
-    chmod 0664 /sys/fs/cgroup/stune/tasks
-    chmod 0664 /sys/fs/cgroup/stune/foreground/tasks
+    mkdir /dev/stune
+    mount cgroup none /dev/stune schedtune
+    mkdir /dev/stune/foreground
+    chown system system /dev/stune
+    chown system system /dev/stune/foreground
+    chown system system /dev/stune/tasks
+    chown system system /dev/stune/foreground/tasks
+    chmod 0664 /dev/stune/tasks
+    chmod 0664 /dev/stune/foreground/tasks
 
     # Mount staging areas for devices managed by vold
     # See storage config details at http://source.android.com/tech/storage/
     mount tmpfs tmpfs /mnt mode=0755,uid=0,gid=1000
     restorecon_recursive /mnt
 
+    mount configfs none /config
+    chmod 0775 /config/sdcardfs
+    chown system package_info /config/sdcardfs
+
     mkdir /mnt/secure 0700 root root
     mkdir /mnt/secure/asec 0700 root root
     mkdir /mnt/asec 0755 root system
@@ -83,6 +74,7 @@
     mkdir /mnt/user 0755 root root
     mkdir /mnt/user/0 0755 root root
     mkdir /mnt/expand 0771 system system
+    mkdir /mnt/appfuse 0711 root root
 
     # Storage views to support runtime permissions
     mkdir /mnt/runtime 0700 root root
@@ -95,11 +87,14 @@
 
     # Symlink to keep legacy apps working in multi-user world
     symlink /storage/self/primary /sdcard
+    symlink /storage/self/primary /mnt/sdcard
     symlink /mnt/user/0/primary /mnt/runtime/default/self/primary
 
-    # memory control cgroup
+    # root memory control cgroup, used by lmkd
     mkdir /dev/memcg 0700 root system
     mount cgroup none /dev/memcg memory
+    # app mem cgroups, used by activity manager, lmkd and zygote
+    mkdir /dev/memcg/apps/ 0755 system system
 
     write /proc/sys/kernel/panic_on_oops 1
     write /proc/sys/kernel/hung_task_timeout_secs 0
@@ -175,21 +170,32 @@
     write /dev/cpuset/system-background/cpus 0
     write /dev/cpuset/system-background/mems 0
 
+    mkdir /dev/cpuset/top-app
+    write /dev/cpuset/top-app/cpus 0
+    write /dev/cpuset/top-app/mems 0
+
     # change permissions for all cpusets we'll touch at runtime
     chown system system /dev/cpuset
     chown system system /dev/cpuset/foreground
     chown system system /dev/cpuset/foreground/boost
     chown system system /dev/cpuset/background
     chown system system /dev/cpuset/system-background
+    chown system system /dev/cpuset/top-app
     chown system system /dev/cpuset/tasks
     chown system system /dev/cpuset/foreground/tasks
     chown system system /dev/cpuset/foreground/boost/tasks
     chown system system /dev/cpuset/background/tasks
     chown system system /dev/cpuset/system-background/tasks
+    chown system system /dev/cpuset/top-app/tasks
+
+    # set system-background to 0775 so SurfaceFlinger can touch it
+    chmod 0775 /dev/cpuset/system-background
+
     chmod 0664 /dev/cpuset/foreground/tasks
     chmod 0664 /dev/cpuset/foreground/boost/tasks
     chmod 0664 /dev/cpuset/background/tasks
     chmod 0664 /dev/cpuset/system-background/tasks
+    chmod 0664 /dev/cpuset/top-app/tasks
     chmod 0664 /dev/cpuset/tasks
 
 
@@ -285,6 +291,10 @@
     # permissions if created by the recovery system.
     mkdir /cache/recovery 0770 system cache
 
+    # Backup/restore mechanism uses the cache partition
+    mkdir /cache/backup_stage 0700 system system
+    mkdir /cache/backup 0700 system system
+
     #change permissions on vmallocinfo so we can grab it from bugreports
     chown root log /proc/vmallocinfo
     chmod 0440 /proc/vmallocinfo
@@ -321,8 +331,6 @@
     start vold
     installkey /data
 
-    # Emulated internal storage area
-    mkdir /data/media 0770 media_rw media_rw
     # Start bootcharting as soon as possible after the data partition is
     # mounted to collect more data.
     mkdir /data/bootchart 0755 shell shell
@@ -359,16 +367,23 @@
     chmod 0660 /data/misc/wifi/wpa_supplicant.conf
     mkdir /data/local 0751 root root
     mkdir /data/misc/media 0700 media media
+    mkdir /data/misc/audioserver 0700 audioserver audioserver
+    mkdir /data/misc/cameraserver 0700 cameraserver cameraserver
     mkdir /data/misc/vold 0700 root root
     mkdir /data/misc/boottrace 0771 system shell
     mkdir /data/misc/update_engine 0700 root root
     mkdir /data/misc/trace 0700 root root
+    # profile file layout
+    mkdir /data/misc/profiles 0771 system system
+    mkdir /data/misc/profiles/cur 0771 system system
+    mkdir /data/misc/profiles/ref 0771 system system
 
     # For security reasons, /data/local/tmp should always be empty.
     # Do not place files or directories in /data/local/tmp
     mkdir /data/local/tmp 0771 shell shell
     mkdir /data/data 0771 system system
     mkdir /data/app-private 0771 system system
+    mkdir /data/app-ephemeral 0771 system system
     mkdir /data/app-asec 0700 root root
     mkdir /data/app-lib 0771 system system
     mkdir /data/app 0771 system system
@@ -377,6 +392,8 @@
 
     # create dalvik-cache, so as to enforce our permissions
     mkdir /data/dalvik-cache 0771 root root
+    # create the A/B OTA directory, so as to enforce our permissions
+    mkdir /data/ota 0771 root root
 
     # create resource-cache and double-check the perms
     mkdir /data/resource-cache 0771 system system
@@ -397,18 +414,32 @@
     mkdir /data/anr 0775 system system
 
     # symlink to bugreport storage location
-    symlink /data/data/com.android.shell/files/bugreports /data/bugreports
+    rm /data/bugreports
+    symlink /data/user_de/0/com.android.shell/files/bugreports /data/bugreports
 
     # Create all remaining /data root dirs so that they are made through init
     # and get proper encryption policy installed
     mkdir /data/backup 0700 system system
-    mkdir /data/media 0770 media_rw media_rw
     mkdir /data/ss 0700 system system
+
     mkdir /data/system 0775 system system
     mkdir /data/system/heapdump 0700 system system
-    mkdir /data/user 0711 system system
+    mkdir /data/system/users 0775 system system
 
-    setusercryptopolicies /data/user
+    mkdir /data/system_de 0770 system system
+    mkdir /data/system_ce 0770 system system
+
+    mkdir /data/misc_de 01771 system misc
+    mkdir /data/misc_ce 01771 system misc
+
+    mkdir /data/user 0711 system system
+    mkdir /data/user_de 0711 system system
+    symlink /data/data /data/user/0
+
+    mkdir /data/media 0770 media_rw media_rw
+    mkdir /data/media/obb 0770 media_rw media_rw
+
+    init_user0
 
     # Set SELinux security contexts on upgrade or policy update.
     restorecon_recursive /data
@@ -520,13 +551,6 @@
     class_start main
     class_start late_start
 
-on property:vold.decrypt=trigger_default_encryption
-    start defaultcrypto
-
-on property:vold.decrypt=trigger_encryption
-    start surfaceflinger
-    start encrypt
-
 on property:sys.init_log_level=*
     loglevel ${sys.init_log_level}
 
diff --git a/rootdir/init.zygote32.rc b/rootdir/init.zygote32.rc
index 0ca38b9..22b9d6b 100644
--- a/rootdir/init.zygote32.rc
+++ b/rootdir/init.zygote32.rc
@@ -3,6 +3,8 @@
     socket zygote stream 660 root system
     onrestart write /sys/android_power/request_state wake
     onrestart write /sys/power/state on
+    onrestart restart audioserver
+    onrestart restart cameraserver
     onrestart restart media
     onrestart restart netd
-    writepid /dev/cpuset/foreground/tasks /sys/fs/cgroup/stune/foreground/tasks
+    writepid /dev/cpuset/foreground/tasks /dev/stune/foreground/tasks
diff --git a/rootdir/init.zygote32_64.rc b/rootdir/init.zygote32_64.rc
index 1646c0f..555eda4 100644
--- a/rootdir/init.zygote32_64.rc
+++ b/rootdir/init.zygote32_64.rc
@@ -3,6 +3,8 @@
     socket zygote stream 660 root system
     onrestart write /sys/android_power/request_state wake
     onrestart write /sys/power/state on
+    onrestart restart audioserver
+    onrestart restart cameraserver
     onrestart restart media
     onrestart restart netd
     writepid /dev/cpuset/foreground/tasks /sys/fs/cgroup/stune/foreground/tasks
@@ -11,4 +13,4 @@
     class main
     socket zygote_secondary stream 660 root system
     onrestart restart zygote
-    writepid /dev/cpuset/foreground/tasks /sys/fs/cgroup/stune/foreground/tasks
+    writepid /dev/cpuset/foreground/tasks /dev/stune/foreground/tasks
diff --git a/rootdir/init.zygote64.rc b/rootdir/init.zygote64.rc
index b477c8e..297468c 100644
--- a/rootdir/init.zygote64.rc
+++ b/rootdir/init.zygote64.rc
@@ -3,6 +3,8 @@
     socket zygote stream 660 root system
     onrestart write /sys/android_power/request_state wake
     onrestart write /sys/power/state on
+    onrestart restart audioserver
+    onrestart restart cameraserver
     onrestart restart media
     onrestart restart netd
-    writepid /dev/cpuset/foreground/tasks /sys/fs/cgroup/stune/foreground/tasks
+    writepid /dev/cpuset/foreground/tasks /dev/stune/foreground/tasks
diff --git a/rootdir/init.zygote64_32.rc b/rootdir/init.zygote64_32.rc
index 633a981..46f9f02 100644
--- a/rootdir/init.zygote64_32.rc
+++ b/rootdir/init.zygote64_32.rc
@@ -3,6 +3,8 @@
     socket zygote stream 660 root system
     onrestart write /sys/android_power/request_state wake
     onrestart write /sys/power/state on
+    onrestart restart audioserver
+    onrestart restart cameraserver
     onrestart restart media
     onrestart restart netd
     writepid /dev/cpuset/foreground/tasks /sys/fs/cgroup/stune/foreground/tasks
@@ -11,4 +13,4 @@
     class main
     socket zygote_secondary stream 660 root system
     onrestart restart zygote
-    writepid /dev/cpuset/foreground/tasks /sys/fs/cgroup/stune/foreground/tasks
+    writepid /dev/cpuset/foreground/tasks /dev/stune/foreground/tasks
diff --git a/run-as/package.c b/run-as/package.c
index aea89e5..86824c2 100644
--- a/run-as/package.c
+++ b/run-as/package.c
@@ -182,6 +182,10 @@
     if (ret < 0)
         return -1;
 
+    /* /data/user/0 is a known safe symlink */
+    if (strcmp("/data/user/0", path) == 0)
+        return 0;
+
     /* must be a real directory, not a symlink */
     if (!S_ISDIR(st.st_mode))
         goto BAD;
diff --git a/sdcard/sdcard.c b/sdcard/sdcard.c
index f08c9d8..27e91c1 100644
--- a/sdcard/sdcard.c
+++ b/sdcard/sdcard.c
@@ -43,10 +43,14 @@
 #include <cutils/hashmap.h>
 #include <cutils/log.h>
 #include <cutils/multiuser.h>
+#include <cutils/properties.h>
 #include <packagelistparser/packagelistparser.h>
 
 #include <private/android_filesystem_config.h>
 
+/* FUSE_CANONICAL_PATH is not currently upstreamed */
+#define FUSE_CANONICAL_PATH 2016
+
 /* README
  *
  * What is this?
@@ -89,6 +93,9 @@
 
 #define ERROR(x...) ALOGE(x)
 
+#define PROP_SDCARDFS_DEVICE "ro.sys.sdcardfs"
+#define PROP_SDCARDFS_USER "persist.sys.sdcardfs"
+
 #define FUSE_UNKNOWN_INO 0xffffffff
 
 /* Maximum number of bytes to write in one request. */
@@ -337,7 +344,7 @@
 
     ssize_t pathlen = 0;
     if (node->parent && node->graft_path == NULL) {
-        pathlen = get_node_path_locked(node->parent, buf, bufsize - namelen - 2);
+        pathlen = get_node_path_locked(node->parent, buf, bufsize - namelen - 1);
         if (pathlen < 0) {
             return -1;
         }
@@ -1215,13 +1222,7 @@
     }
     out.fh = ptr_to_id(h);
     out.open_flags = 0;
-
-#ifdef FUSE_STACKED_IO
-    out.lower_fd = h->fd;
-#else
     out.padding = 0;
-#endif
-
     fuse_reply(fuse, hdr->unique, &out, sizeof(out));
     return NO_STATUS;
 }
@@ -1385,13 +1386,7 @@
     }
     out.fh = ptr_to_id(h);
     out.open_flags = 0;
-
-#ifdef FUSE_STACKED_IO
-    out.lower_fd = -1;
-#else
     out.padding = 0;
-#endif
-
     fuse_reply(fuse, hdr->unique, &out, sizeof(out));
     return NO_STATUS;
 }
@@ -1473,11 +1468,6 @@
     out.major = FUSE_KERNEL_VERSION;
     out.max_readahead = req->max_readahead;
     out.flags = FUSE_ATOMIC_O_TRUNC | FUSE_BIG_WRITES;
-
-#ifdef FUSE_STACKED_IO
-    out.flags |= FUSE_STACKED_IO;
-#endif
-
     out.max_background = 32;
     out.congestion_threshold = 32;
     out.max_write = MAX_WRITE;
@@ -1485,6 +1475,35 @@
     return NO_STATUS;
 }
 
+static int handle_canonical_path(struct fuse* fuse, struct fuse_handler* handler,
+        const struct fuse_in_header *hdr)
+{
+    struct node* node;
+    char path[PATH_MAX];
+    int len;
+
+    pthread_mutex_lock(&fuse->global->lock);
+    node = lookup_node_and_path_by_id_locked(fuse, hdr->nodeid,
+            path, sizeof(path));
+    TRACE("[%d] CANONICAL_PATH @ %" PRIx64 " (%s)\n", handler->token, hdr->nodeid,
+        node ? node->name : "?");
+    pthread_mutex_unlock(&fuse->global->lock);
+
+    if (!node) {
+        return -ENOENT;
+    }
+    if (!check_caller_access_to_node(fuse, hdr, node, R_OK)) {
+        return -EACCES;
+    }
+    len = strlen(path);
+    if (len + 1 > PATH_MAX)
+        len = PATH_MAX - 1;
+    path[PATH_MAX - 1] = 0;
+    fuse_reply(fuse, hdr->unique, path, len + 1);
+    return NO_STATUS;
+}
+
+
 static int handle_fuse_request(struct fuse *fuse, struct fuse_handler* handler,
         const struct fuse_in_header *hdr, const void *data, size_t data_len)
 {
@@ -1600,6 +1619,10 @@
         return handle_init(fuse, handler, hdr, req);
     }
 
+    case FUSE_CANONICAL_PATH: { /* nodeid -> bytez[] */
+        return handle_canonical_path(fuse, handler, hdr);
+    }
+
     default: {
         TRACE("[%d] NOTIMPL op=%d uniq=%"PRIx64" nid=%"PRIx64"\n",
                 handler->token, hdr->opcode, hdr->unique, hdr->nodeid);
@@ -1912,6 +1935,128 @@
     exit(1);
 }
 
+static int sdcardfs_setup(const char *source_path, const char *dest_path, uid_t fsuid,
+                        gid_t fsgid, bool multi_user, userid_t userid, gid_t gid, mode_t mask) {
+    char opts[256];
+
+    snprintf(opts, sizeof(opts),
+            "fsuid=%d,fsgid=%d,%smask=%d,userid=%d,gid=%d",
+            fsuid, fsgid, multi_user?"multiuser,":"", mask, userid, gid);
+
+    if (mount(source_path, dest_path, "sdcardfs",
+                        MS_NOSUID | MS_NODEV | MS_NOEXEC | MS_NOATIME, opts) != 0) {
+        ERROR("failed to mount sdcardfs filesystem: %s\n", strerror(errno));
+        return -1;
+    }
+
+    return 0;
+}
+
+static void run_sdcardfs(const char* source_path, const char* label, uid_t uid,
+        gid_t gid, userid_t userid, bool multi_user, bool full_write) {
+    char dest_path_default[PATH_MAX];
+    char dest_path_read[PATH_MAX];
+    char dest_path_write[PATH_MAX];
+    char obb_path[PATH_MAX];
+    snprintf(dest_path_default, PATH_MAX, "/mnt/runtime/default/%s", label);
+    snprintf(dest_path_read, PATH_MAX, "/mnt/runtime/read/%s", label);
+    snprintf(dest_path_write, PATH_MAX, "/mnt/runtime/write/%s", label);
+
+    umask(0);
+    if (multi_user) {
+        /* Multi-user storage is fully isolated per user, so "other"
+         * permissions are completely masked off. */
+        if (sdcardfs_setup(source_path, dest_path_default, uid, gid, multi_user, userid,
+                                                      AID_SDCARD_RW, 0006)
+                || sdcardfs_setup(source_path, dest_path_read, uid, gid, multi_user, userid,
+                                                      AID_EVERYBODY, 0027)
+                || sdcardfs_setup(source_path, dest_path_write, uid, gid, multi_user, userid,
+                                                      AID_EVERYBODY, full_write ? 0007 : 0027)) {
+            ERROR("failed to fuse_setup\n");
+            exit(1);
+        }
+    } else {
+        /* Physical storage is readable by all users on device, but
+         * the Android directories are masked off to a single user
+         * deep inside attr_from_stat(). */
+        if (sdcardfs_setup(source_path, dest_path_default, uid, gid, multi_user, userid,
+                                                      AID_SDCARD_RW, 0006)
+                || sdcardfs_setup(source_path, dest_path_read, uid, gid, multi_user, userid,
+                                                      AID_EVERYBODY, full_write ? 0027 : 0022)
+                || sdcardfs_setup(source_path, dest_path_write, uid, gid, multi_user, userid,
+                                                      AID_EVERYBODY, full_write ? 0007 : 0022)) {
+            ERROR("failed to fuse_setup\n");
+            exit(1);
+        }
+    }
+
+    /* Drop privs */
+    if (setgroups(sizeof(kGroups) / sizeof(kGroups[0]), kGroups) < 0) {
+        ERROR("cannot setgroups: %s\n", strerror(errno));
+        exit(1);
+    }
+    if (setgid(gid) < 0) {
+        ERROR("cannot setgid: %s\n", strerror(errno));
+        exit(1);
+    }
+    if (setuid(uid) < 0) {
+        ERROR("cannot setuid: %s\n", strerror(errno));
+        exit(1);
+    }
+
+    if (multi_user) {
+        snprintf(obb_path, sizeof(obb_path), "%s/obb", source_path);
+        fs_prepare_dir(&obb_path[0], 0775, uid, gid);
+    }
+
+    exit(0);
+}
+
+static bool supports_sdcardfs(void) {
+    FILE *fp;
+    char *buf = NULL;
+    size_t buflen = 0;
+
+    fp = fopen("/proc/filesystems", "r");
+    if (!fp) {
+        ERROR("Could not read /proc/filesystems, error: %s\n", strerror(errno));
+        return false;
+    }
+    while ((getline(&buf, &buflen, fp)) > 0) {
+        if (strstr(buf, "sdcardfs\n")) {
+            free(buf);
+            fclose(fp);
+            return true;
+        }
+    }
+    free(buf);
+    fclose(fp);
+    return false;
+}
+
+static bool should_use_sdcardfs(void) {
+    char property[PROPERTY_VALUE_MAX];
+
+    // Allow user to have a strong opinion about state
+    property_get(PROP_SDCARDFS_USER, property, "");
+    if (!strcmp(property, "force_on")) {
+        ALOGW("User explicitly enabled sdcardfs");
+        return supports_sdcardfs();
+    } else if (!strcmp(property, "force_off")) {
+        ALOGW("User explicitly disabled sdcardfs");
+        return false;
+    }
+
+    // Fall back to device opinion about state
+    if (property_get_bool(PROP_SDCARDFS_DEVICE, false)) {
+        ALOGW("Device explicitly enabled sdcardfs");
+        return supports_sdcardfs();
+    } else {
+        ALOGW("Device explicitly disabled sdcardfs");
+        return false;
+    }
+}
+
 int main(int argc, char **argv) {
     const char *source_path = NULL;
     const char *label = NULL;
@@ -1984,6 +2129,10 @@
         sleep(1);
     }
 
-    run(source_path, label, uid, gid, userid, multi_user, full_write);
+    if (should_use_sdcardfs()) {
+        run_sdcardfs(source_path, label, uid, gid, userid, multi_user, full_write);
+    } else {
+        run(source_path, label, uid, gid, userid, multi_user, full_write);
+    }
     return 1;
 }
diff --git a/trusty/gatekeeper/Android.mk b/trusty/gatekeeper/Android.mk
new file mode 100644
index 0000000..13e9a09
--- /dev/null
+++ b/trusty/gatekeeper/Android.mk
@@ -0,0 +1,50 @@
+#
+# Copyright (C) 2015 The Android Open-Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# WARNING: Everything listed here will be built on ALL platforms,
+# including x86, the emulator, and the SDK.  Modules must be uniquely
+# named (liblights.panda), and must build everywhere, or limit themselves
+# to only building on ARM if they include assembly. Individual makefiles
+# are responsible for having their own logic, for fine-grained control.
+
+LOCAL_PATH:= $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := gatekeeper.trusty
+
+LOCAL_MODULE_RELATIVE_PATH := hw
+
+LOCAL_SRC_FILES := \
+	module.cpp \
+	trusty_gatekeeper_ipc.c \
+	trusty_gatekeeper.cpp
+
+LOCAL_CLFAGS = -fvisibility=hidden -Wall -Werror
+
+LOCAL_SHARED_LIBRARIES := \
+	libgatekeeper \
+	liblog \
+	libcutils \
+	libtrusty
+
+LOCAL_MODULE_TAGS := optional
+
+# Symlink gatekeeper.trusty.so -> gatekeeper.<device>.so so libhardware can find it.
+LOCAL_POST_INSTALL_CMD = \
+    $(hide) ln -sf $(notdir $(LOCAL_INSTALLED_MODULE)) $(dir $(LOCAL_INSTALLED_MODULE))gatekeeper.$(TARGET_DEVICE).so
+
+include $(BUILD_SHARED_LIBRARY)
diff --git a/trusty/gatekeeper/gatekeeper_ipc.h b/trusty/gatekeeper/gatekeeper_ipc.h
new file mode 100644
index 0000000..b05dcd8
--- /dev/null
+++ b/trusty/gatekeeper/gatekeeper_ipc.h
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#define GATEKEEPER_PORT "com.android.trusty.gatekeeper"
+#define GATEKEEPER_MAX_BUFFER_LENGTH 1024
+
+enum gatekeeper_command {
+	GK_REQ_SHIFT = 1,
+	GK_RESP_BIT  = 1,
+
+	GK_ENROLL       = (0 << GK_REQ_SHIFT),
+	GK_VERIFY       = (1 << GK_REQ_SHIFT),
+};
+
+/**
+ * gatekeeper_message - Serial header for communicating with GK server
+ * @cmd: the command, one of ENROLL, VERIFY. Payload must be a serialized
+ *       buffer of the corresponding request object.
+ * @payload: start of the serialized command specific payload
+ */
+struct gatekeeper_message {
+    uint32_t cmd;
+    uint8_t payload[0];
+};
+
diff --git a/trusty/gatekeeper/module.cpp b/trusty/gatekeeper/module.cpp
new file mode 100644
index 0000000..0ee3c2f
--- /dev/null
+++ b/trusty/gatekeeper/module.cpp
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <hardware/hardware.h>
+
+#include <string.h>
+#include <errno.h>
+#include <stdlib.h>
+
+#include "trusty_gatekeeper.h"
+
+using gatekeeper::TrustyGateKeeperDevice;
+
+static int trusty_gatekeeper_open(const hw_module_t *module, const char *name,
+        hw_device_t **device) {
+
+    if (strcmp(name, HARDWARE_GATEKEEPER) != 0) {
+        return -EINVAL;
+    }
+
+    TrustyGateKeeperDevice *gatekeeper = new TrustyGateKeeperDevice(module);
+    if (gatekeeper == NULL) return -ENOMEM;
+    *device = gatekeeper->hw_device();
+
+    return 0;
+}
+
+static struct hw_module_methods_t gatekeeper_module_methods = {
+    .open = trusty_gatekeeper_open,
+};
+
+struct gatekeeper_module HAL_MODULE_INFO_SYM __attribute__((visibility("default"))) = {
+    .common = {
+        .tag = HARDWARE_MODULE_TAG,
+        .module_api_version = GATEKEEPER_MODULE_API_VERSION_0_1,
+        .hal_api_version = HARDWARE_HAL_API_VERSION,
+        .id = GATEKEEPER_HARDWARE_MODULE_ID,
+        .name = "Trusty GateKeeper HAL",
+        .author = "The Android Open Source Project",
+        .methods = &gatekeeper_module_methods,
+        .dso = 0,
+        .reserved = {}
+    },
+};
diff --git a/trusty/gatekeeper/trusty_gatekeeper.cpp b/trusty/gatekeeper/trusty_gatekeeper.cpp
new file mode 100644
index 0000000..d24f44f
--- /dev/null
+++ b/trusty/gatekeeper/trusty_gatekeeper.cpp
@@ -0,0 +1,230 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <errno.h>
+#include <stdio.h>
+#include <assert.h>
+#include <type_traits>
+
+#include "trusty_gatekeeper.h"
+#include "trusty_gatekeeper_ipc.h"
+#include "gatekeeper_ipc.h"
+
+#define LOG_TAG "TrustyGateKeeper"
+#include <cutils/log.h>
+
+namespace gatekeeper {
+
+const uint32_t SEND_BUF_SIZE = 8192;
+const uint32_t RECV_BUF_SIZE = 8192;
+
+TrustyGateKeeperDevice::TrustyGateKeeperDevice(const hw_module_t *module) {
+#if __cplusplus >= 201103L || defined(__GXX_EXPERIMENTAL_CXX0X__)
+    static_assert(std::is_standard_layout<TrustyGateKeeperDevice>::value,
+                  "TrustyGateKeeperDevice must be standard layout");
+    static_assert(offsetof(TrustyGateKeeperDevice, device_) == 0,
+                  "device_ must be the first member of TrustyGateKeeperDevice");
+    static_assert(offsetof(TrustyGateKeeperDevice, device_.common) == 0,
+                  "common must be the first member of gatekeeper_device");
+#else
+    assert(reinterpret_cast<gatekeeper_device_t *>(this) == &device_);
+    assert(reinterpret_cast<hw_device_t *>(this) == &(device_.common));
+#endif
+
+    memset(&device_, 0, sizeof(device_));
+    device_.common.tag = HARDWARE_DEVICE_TAG;
+    device_.common.version = 1;
+    device_.common.module = const_cast<hw_module_t *>(module);
+    device_.common.close = close_device;
+
+    device_.enroll = enroll;
+    device_.verify = verify;
+    device_.delete_user = nullptr;
+    device_.delete_all_users = nullptr;
+
+    int rc = trusty_gatekeeper_connect();
+    if (rc < 0) {
+        ALOGE("Error initializing trusty session: %d", rc);
+    }
+
+    error_ = rc;
+
+}
+
+hw_device_t* TrustyGateKeeperDevice::hw_device() {
+    return &device_.common;
+}
+
+int TrustyGateKeeperDevice::close_device(hw_device_t* dev) {
+    delete reinterpret_cast<TrustyGateKeeperDevice *>(dev);
+    return 0;
+}
+
+TrustyGateKeeperDevice::~TrustyGateKeeperDevice() {
+    trusty_gatekeeper_disconnect();
+}
+
+int TrustyGateKeeperDevice::Enroll(uint32_t uid, const uint8_t *current_password_handle,
+        uint32_t current_password_handle_length, const uint8_t *current_password,
+        uint32_t current_password_length, const uint8_t *desired_password,
+        uint32_t desired_password_length, uint8_t **enrolled_password_handle,
+        uint32_t *enrolled_password_handle_length) {
+
+    if (error_ != 0) {
+        return error_;
+    }
+
+    SizedBuffer desired_password_buffer(desired_password_length);
+    memcpy(desired_password_buffer.buffer.get(), desired_password, desired_password_length);
+
+    SizedBuffer current_password_handle_buffer(current_password_handle_length);
+    if (current_password_handle) {
+        memcpy(current_password_handle_buffer.buffer.get(), current_password_handle,
+                current_password_handle_length);
+    }
+
+    SizedBuffer current_password_buffer(current_password_length);
+    if (current_password) {
+        memcpy(current_password_buffer.buffer.get(), current_password, current_password_length);
+    }
+
+    EnrollRequest request(uid, &current_password_handle_buffer, &desired_password_buffer,
+            &current_password_buffer);
+    EnrollResponse response;
+
+    gatekeeper_error_t error = Send(request, &response);
+
+    if (error == ERROR_RETRY) {
+        return response.retry_timeout;
+    } else if (error != ERROR_NONE) {
+        return -EINVAL;
+    }
+
+    *enrolled_password_handle = response.enrolled_password_handle.buffer.release();
+    *enrolled_password_handle_length = response.enrolled_password_handle.length;
+
+
+    return 0;
+}
+
+int TrustyGateKeeperDevice::Verify(uint32_t uid, uint64_t challenge,
+        const uint8_t *enrolled_password_handle, uint32_t enrolled_password_handle_length,
+        const uint8_t *provided_password, uint32_t provided_password_length,
+        uint8_t **auth_token, uint32_t *auth_token_length, bool *request_reenroll) {
+    if (error_ != 0) {
+        return error_;
+    }
+
+    SizedBuffer password_handle_buffer(enrolled_password_handle_length);
+    memcpy(password_handle_buffer.buffer.get(), enrolled_password_handle,
+            enrolled_password_handle_length);
+    SizedBuffer provided_password_buffer(provided_password_length);
+    memcpy(provided_password_buffer.buffer.get(), provided_password, provided_password_length);
+
+    VerifyRequest request(uid, challenge, &password_handle_buffer, &provided_password_buffer);
+    VerifyResponse response;
+
+    gatekeeper_error_t error = Send(request, &response);
+
+    if (error == ERROR_RETRY) {
+        return response.retry_timeout;
+    } else if (error != ERROR_NONE) {
+        return -EINVAL;
+    }
+
+    if (auth_token != NULL && auth_token_length != NULL) {
+       *auth_token = response.auth_token.buffer.release();
+       *auth_token_length = response.auth_token.length;
+    }
+
+    if (request_reenroll != NULL) {
+        *request_reenroll = response.request_reenroll;
+    }
+
+    return 0;
+}
+
+gatekeeper_error_t TrustyGateKeeperDevice::Send(uint32_t command, const GateKeeperMessage& request,
+        GateKeeperMessage *response) {
+    uint32_t request_size = request.GetSerializedSize();
+    if (request_size > SEND_BUF_SIZE)
+        return ERROR_INVALID;
+    uint8_t send_buf[SEND_BUF_SIZE];
+    request.Serialize(send_buf, send_buf + request_size);
+
+    // Send it
+    uint8_t recv_buf[RECV_BUF_SIZE];
+    uint32_t response_size = RECV_BUF_SIZE;
+    int rc = trusty_gatekeeper_call(command, send_buf, request_size, recv_buf, &response_size);
+    if (rc < 0) {
+        ALOGE("error (%d) calling gatekeeper TA", rc);
+        return ERROR_INVALID;
+    }
+
+    const gatekeeper_message *msg = reinterpret_cast<gatekeeper_message *>(recv_buf);
+    const uint8_t *payload = msg->payload;
+
+    return response->Deserialize(payload, payload + response_size);
+}
+
+static inline TrustyGateKeeperDevice *convert_device(const gatekeeper_device *dev) {
+    return reinterpret_cast<TrustyGateKeeperDevice *>(const_cast<gatekeeper_device *>(dev));
+}
+
+/* static */
+int TrustyGateKeeperDevice::enroll(const struct gatekeeper_device *dev, uint32_t uid,
+            const uint8_t *current_password_handle, uint32_t current_password_handle_length,
+            const uint8_t *current_password, uint32_t current_password_length,
+            const uint8_t *desired_password, uint32_t desired_password_length,
+            uint8_t **enrolled_password_handle, uint32_t *enrolled_password_handle_length) {
+
+    if (dev == NULL ||
+            enrolled_password_handle == NULL || enrolled_password_handle_length == NULL ||
+            desired_password == NULL || desired_password_length == 0)
+        return -EINVAL;
+
+    // Current password and current password handle go together
+    if (current_password_handle == NULL || current_password_handle_length == 0 ||
+            current_password == NULL || current_password_length == 0) {
+        current_password_handle = NULL;
+        current_password_handle_length = 0;
+        current_password = NULL;
+        current_password_length = 0;
+    }
+
+    return convert_device(dev)->Enroll(uid, current_password_handle, current_password_handle_length,
+            current_password, current_password_length, desired_password, desired_password_length,
+            enrolled_password_handle, enrolled_password_handle_length);
+
+}
+
+/* static */
+int TrustyGateKeeperDevice::verify(const struct gatekeeper_device *dev, uint32_t uid,
+        uint64_t challenge, const uint8_t *enrolled_password_handle,
+        uint32_t enrolled_password_handle_length, const uint8_t *provided_password,
+        uint32_t provided_password_length, uint8_t **auth_token, uint32_t *auth_token_length,
+        bool *request_reenroll) {
+
+    if (dev == NULL || enrolled_password_handle == NULL ||
+            provided_password == NULL) {
+        return -EINVAL;
+    }
+
+    return convert_device(dev)->Verify(uid, challenge, enrolled_password_handle,
+            enrolled_password_handle_length, provided_password, provided_password_length,
+            auth_token, auth_token_length, request_reenroll);
+}
+};
diff --git a/trusty/gatekeeper/trusty_gatekeeper.h b/trusty/gatekeeper/trusty_gatekeeper.h
new file mode 100644
index 0000000..82108dc
--- /dev/null
+++ b/trusty/gatekeeper/trusty_gatekeeper.h
@@ -0,0 +1,126 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef TRUSTY_GATEKEEPER_H
+#define TRUSTY_GATEKEEPER_H
+
+#include <hardware/gatekeeper.h>
+#include <gatekeeper/gatekeeper_messages.h>
+
+#include "gatekeeper_ipc.h"
+
+namespace gatekeeper {
+
+class TrustyGateKeeperDevice {
+    public:
+
+    TrustyGateKeeperDevice(const hw_module_t* module);
+    ~TrustyGateKeeperDevice();
+
+    hw_device_t* hw_device();
+
+    /**
+     * Enrolls password_payload, which should be derived from a user selected pin or password,
+     * with the authentication factor private key used only for enrolling authentication
+     * factor data.
+     *
+     * Returns: 0 on success or an error code less than 0 on error.
+     * On error, enrolled_password will not be allocated.
+     */
+    int Enroll(uint32_t uid, const uint8_t *current_password_handle,
+            uint32_t current_password_handle_length, const uint8_t *current_password,
+            uint32_t current_password_length, const uint8_t *desired_password,
+            uint32_t desired_password_length, uint8_t **enrolled_password_handle,
+            uint32_t *enrolled_password_handle_length);
+
+    /**
+     * Verifies provided_password matches expected_password after enrolling
+     * with the authentication factor private key.
+     *
+     * Implementations of this module may retain the result of this call
+     * to attest to the recency of authentication.
+     *
+     * On success, writes the address of a verification token to verification_token,
+     *
+     * Returns: 0 on success or an error code less than 0 on error
+     * On error, verification token will not be allocated
+     */
+    int Verify(uint32_t uid, uint64_t challenge, const uint8_t *enrolled_password_handle,
+            uint32_t enrolled_password_handle_length, const uint8_t *provided_password,
+            uint32_t provided_password_length, uint8_t **auth_token, uint32_t *auth_token_length,
+            bool *request_reenroll);
+
+    private:
+
+    gatekeeper_error_t Send(uint32_t command, const GateKeeperMessage& request,
+                           GateKeeperMessage* response);
+
+    gatekeeper_error_t Send(const EnrollRequest& request, EnrollResponse *response) {
+        return Send(GK_ENROLL, request, response);
+    }
+
+    gatekeeper_error_t Send(const VerifyRequest& request, VerifyResponse *response) {
+        return Send(GK_VERIFY, request, response);
+    }
+
+    // Static methods interfacing the HAL API with the TrustyGateKeeper device
+
+    /**
+     * Enrolls desired_password, which should be derived from a user selected pin or password,
+     * with the authentication factor private key used only for enrolling authentication
+     * factor data.
+     *
+     * If there was already a password enrolled, it should be provided in
+     * current_password_handle, along with the current password in current_password
+     * that should validate against current_password_handle.
+     *
+     * Returns: 0 on success or an error code less than 0 on error.
+     * On error, enrolled_password_handle will not be allocated.
+     */
+    static int enroll(const struct gatekeeper_device *dev, uint32_t uid,
+            const uint8_t *current_password_handle, uint32_t current_password_handle_length,
+            const uint8_t *current_password, uint32_t current_password_length,
+            const uint8_t *desired_password, uint32_t desired_password_length,
+            uint8_t **enrolled_password_handle, uint32_t *enrolled_password_handle_length);
+
+    /**
+     * Verifies provided_password matches enrolled_password_handle.
+     *
+     * Implementations of this module may retain the result of this call
+     * to attest to the recency of authentication.
+     *
+     * On success, writes the address of a verification token to auth_token,
+     * usable to attest password verification to other trusted services. Clients
+     * may pass NULL for this value.
+     *
+     * Returns: 0 on success or an error code less than 0 on error
+     * On error, verification token will not be allocated
+     */
+    static int verify(const struct gatekeeper_device *dev, uint32_t uid, uint64_t challenge,
+            const uint8_t *enrolled_password_handle, uint32_t enrolled_password_handle_length,
+            const uint8_t *provided_password, uint32_t provided_password_length,
+            uint8_t **auth_token, uint32_t *auth_token_length, bool *request_reenroll);
+
+    static int close_device(hw_device_t* dev);
+
+    gatekeeper_device device_;
+    int error_;
+
+};
+}
+
+#endif
+
diff --git a/trusty/gatekeeper/trusty_gatekeeper_ipc.c b/trusty/gatekeeper/trusty_gatekeeper_ipc.c
new file mode 100644
index 0000000..a1c319e
--- /dev/null
+++ b/trusty/gatekeeper/trusty_gatekeeper_ipc.c
@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define LOG_TAG "TrustyGateKeeper"
+#include <cutils/log.h>
+#include <trusty/tipc.h>
+
+#include "trusty_gatekeeper_ipc.h"
+#include "gatekeeper_ipc.h"
+
+#define TRUSTY_DEVICE_NAME "/dev/trusty-ipc-dev0"
+
+static int handle_ = 0;
+
+int trusty_gatekeeper_connect() {
+    int rc = tipc_connect(TRUSTY_DEVICE_NAME, GATEKEEPER_PORT);
+    if (rc < 0) {
+        return rc;
+    }
+
+    handle_ = rc;
+    return 0;
+}
+
+int trusty_gatekeeper_call(uint32_t cmd, void *in, uint32_t in_size, uint8_t *out,
+                           uint32_t *out_size) {
+    if (handle_ == 0) {
+        ALOGE("not connected\n");
+        return -EINVAL;
+    }
+
+    size_t msg_size = in_size + sizeof(struct gatekeeper_message);
+    struct gatekeeper_message *msg = malloc(msg_size);
+    msg->cmd = cmd;
+    memcpy(msg->payload, in, in_size);
+
+    ssize_t rc = write(handle_, msg, msg_size);
+    free(msg);
+
+    if (rc < 0) {
+        ALOGE("failed to send cmd (%d) to %s: %s\n", cmd,
+                GATEKEEPER_PORT, strerror(errno));
+        return -errno;
+    }
+
+    rc = read(handle_, out, *out_size);
+    if (rc < 0) {
+        ALOGE("failed to retrieve response for cmd (%d) to %s: %s\n",
+                cmd, GATEKEEPER_PORT, strerror(errno));
+        return -errno;
+    }
+
+    if ((size_t) rc < sizeof(struct gatekeeper_message)) {
+        ALOGE("invalid response size (%d)\n", (int) rc);
+        return -EINVAL;
+    }
+
+    msg = (struct gatekeeper_message *) out;
+
+    if ((cmd | GK_RESP_BIT) != msg->cmd) {
+        ALOGE("invalid command (%d)\n", msg->cmd);
+        return -EINVAL;
+    }
+
+    *out_size = ((size_t) rc) - sizeof(struct gatekeeper_message);
+    return rc;
+}
+
+void trusty_gatekeeper_disconnect() {
+    if (handle_ != 0) {
+        tipc_close(handle_);
+    }
+}
+
diff --git a/trusty/gatekeeper/trusty_gatekeeper_ipc.h b/trusty/gatekeeper/trusty_gatekeeper_ipc.h
new file mode 100644
index 0000000..f8de7f8
--- /dev/null
+++ b/trusty/gatekeeper/trusty_gatekeeper_ipc.h
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+__BEGIN_DECLS
+
+int trusty_gatekeeper_connect();
+int trusty_gatekeeper_call(uint32_t cmd, void *in, uint32_t in_size, uint8_t *out,
+                           uint32_t *out_size);
+void trusty_gatekeeper_disconnect();
+
+__END_DECLS