diff --git a/adb/Android.mk b/adb/Android.mk
index 4ee1ced..e10e3ef 100644
--- a/adb/Android.mk
+++ b/adb/Android.mk
@@ -294,11 +294,15 @@
     libadbd \
     libbase \
     libfs_mgr \
+    libfec \
+    libfec_rs \
     liblog \
     libmincrypt \
     libselinux \
     libext4_utils_static \
+    libsquashfs_utils \
     libcutils \
     libbase \
+    libcrypto_static
 
 include $(BUILD_EXECUTABLE)
diff --git a/adb/adb_io_test.cpp b/adb/adb_io_test.cpp
index 84e3db6..6928a90 100644
--- a/adb/adb_io_test.cpp
+++ b/adb/adb_io_test.cpp
@@ -43,7 +43,7 @@
   ASSERT_NE(-1, tf.fd);
 
   ASSERT_TRUE(android::base::WriteStringToFd(expected, tf.fd)) << strerror(errno);
-  ASSERT_EQ(0, lseek(tf.fd, SEEK_SET, 0));
+  ASSERT_EQ(0, lseek(tf.fd, 0, SEEK_SET));
 
   // Test reading the whole file.
   char buf[sizeof(expected)] = {};
@@ -57,7 +57,7 @@
   ASSERT_NE(-1, tf.fd);
 
   ASSERT_TRUE(android::base::WriteStringToFd(expected, tf.fd)) << strerror(errno);
-  ASSERT_EQ(0, lseek(tf.fd, SEEK_SET, 0));
+  ASSERT_EQ(0, lseek(tf.fd, 0, SEEK_SET));
 
   // Test that not having enough data will fail.
   char buf[sizeof(expected) + 1] = {};
@@ -71,7 +71,7 @@
   ASSERT_NE(-1, tf.fd);
 
   ASSERT_TRUE(android::base::WriteStringToFd(input, tf.fd)) << strerror(errno);
-  ASSERT_EQ(0, lseek(tf.fd, SEEK_SET, 0));
+  ASSERT_EQ(0, lseek(tf.fd, 0, SEEK_SET));
 
   // Test reading a partial file.
   char buf[sizeof(input) - 1] = {};
@@ -90,7 +90,7 @@
   // Test writing the whole string to the file.
   ASSERT_TRUE(WriteFdExactly(tf.fd, expected, sizeof(expected)))
     << strerror(errno);
-  ASSERT_EQ(0, lseek(tf.fd, SEEK_SET, 0));
+  ASSERT_EQ(0, lseek(tf.fd, 0, SEEK_SET));
 
   std::string s;
   ASSERT_TRUE(android::base::ReadFdToString(tf.fd, &s));
@@ -104,7 +104,7 @@
 
   // Test writing a partial string to the file.
   ASSERT_TRUE(WriteFdExactly(tf.fd, buf, sizeof(buf) - 2)) << strerror(errno);
-  ASSERT_EQ(0, lseek(tf.fd, SEEK_SET, 0));
+  ASSERT_EQ(0, lseek(tf.fd, 0, SEEK_SET));
 
   std::string expected(buf);
   expected.pop_back();
@@ -130,7 +130,7 @@
 
   // Test writing a partial string to the file.
   ASSERT_TRUE(WriteFdExactly(tf.fd, str)) << strerror(errno);
-  ASSERT_EQ(0, lseek(tf.fd, SEEK_SET, 0));
+  ASSERT_EQ(0, lseek(tf.fd, 0, SEEK_SET));
 
   std::string s;
   ASSERT_TRUE(android::base::ReadFdToString(tf.fd, &s));
@@ -143,7 +143,7 @@
 
     // Test writing a partial string to the file.
     ASSERT_TRUE(WriteFdFmt(tf.fd, "Foo%s%d", "bar", 123)) << strerror(errno);
-    ASSERT_EQ(0, lseek(tf.fd, SEEK_SET, 0));
+    ASSERT_EQ(0, lseek(tf.fd, 0, SEEK_SET));
 
     std::string s;
     ASSERT_TRUE(android::base::ReadFdToString(tf.fd, &s));
diff --git a/adb/commandline.cpp b/adb/commandline.cpp
index 0531cf9..bc5ba38 100644
--- a/adb/commandline.cpp
+++ b/adb/commandline.cpp
@@ -425,6 +425,7 @@
 // Used to pass multiple values to the stdin read thread.
 struct StdinReadArgs {
     int stdin_fd, write_fd;
+    bool raw_stdin;
     std::unique_ptr<ShellProtocol> protocol;
 };
 
@@ -452,26 +453,42 @@
         D("stdin_read_thread(): pre unix_read(fdi=%d,...)", args->stdin_fd);
         int r = unix_read(args->stdin_fd, buffer_ptr, buffer_size);
         D("stdin_read_thread(): post unix_read(fdi=%d,...)", args->stdin_fd);
-        if (r <= 0) break;
-        for (int n = 0; n < r; n++){
-            switch(buffer_ptr[n]) {
-            case '\n':
-                state = 1;
-                break;
-            case '\r':
-                state = 1;
-                break;
-            case '~':
-                if(state == 1) state++;
-                break;
-            case '.':
-                if(state == 2) {
-                    fprintf(stderr,"\n* disconnect *\n");
-                    stdin_raw_restore(args->stdin_fd);
-                    exit(0);
+        if (r <= 0) {
+            // Only devices using the shell protocol know to close subprocess
+            // stdin. For older devices we want to just leave the connection
+            // open, otherwise an unpredictable amount of return data could
+            // be lost due to the FD closing before all data has been received.
+            if (args->protocol) {
+                args->protocol->Write(ShellProtocol::kIdCloseStdin, 0);
+            }
+            break;
+        }
+        // If we made stdin raw, check input for the "~." escape sequence. In
+        // this situation signals like Ctrl+C are sent remotely rather than
+        // interpreted locally so this provides an emergency out if the remote
+        // process starts ignoring the signal. SSH also does this, see the
+        // "escape characters" section on the ssh man page for more info.
+        if (args->raw_stdin) {
+            for (int n = 0; n < r; n++){
+                switch(buffer_ptr[n]) {
+                case '\n':
+                    state = 1;
+                    break;
+                case '\r':
+                    state = 1;
+                    break;
+                case '~':
+                    if(state == 1) state++;
+                    break;
+                case '.':
+                    if(state == 2) {
+                        stdin_raw_restore(args->stdin_fd);
+                        fprintf(stderr,"\n* disconnect *\n");
+                        exit(0);
+                    }
+                default:
+                    state = 0;
                 }
-            default:
-                state = 0;
             }
         }
         if (args->protocol) {
@@ -488,8 +505,44 @@
     return nullptr;
 }
 
-static int interactive_shell(const std::string& service_string,
-                             bool use_shell_protocol) {
+// Returns a shell service string with the indicated arguments and command.
+static std::string ShellServiceString(bool use_shell_protocol,
+                                      const std::string& type_arg,
+                                      const std::string& command) {
+    std::vector<std::string> args;
+    if (use_shell_protocol) {
+        args.push_back(kShellServiceArgShellProtocol);
+    }
+    if (!type_arg.empty()) {
+        args.push_back(type_arg);
+    }
+
+    // Shell service string can look like: shell[,arg1,arg2,...]:[command].
+    return android::base::StringPrintf("shell%s%s:%s",
+                                       args.empty() ? "" : ",",
+                                       android::base::Join(args, ',').c_str(),
+                                       command.c_str());
+}
+
+// Connects to a shell on the device and read/writes data.
+//
+// Note: currently this function doesn't properly clean up resources; the
+// FD connected to the adb server is never closed and the stdin read thread
+// may never exit.
+//
+// On success returns the remote exit code if |use_shell_protocol| is true,
+// 0 otherwise. On failure returns 1.
+static int RemoteShell(bool use_shell_protocol, const std::string& type_arg,
+                       const std::string& command) {
+    std::string service_string = ShellServiceString(use_shell_protocol,
+                                                    type_arg, command);
+
+    // Make local stdin raw if the device allocates a PTY, which happens if:
+    //   1. We are explicitly asking for a PTY shell, or
+    //   2. We don't specify shell type and are starting an interactive session.
+    bool raw_stdin = (type_arg == kShellServiceArgPty ||
+                      (type_arg.empty() && command.empty()));
+
     std::string error;
     int fd = adb_connect(service_string, &error);
     if (fd < 0) {
@@ -502,13 +555,16 @@
         LOG(ERROR) << "couldn't allocate StdinReadArgs object";
         return 1;
     }
-    args->stdin_fd = 0;
+    args->stdin_fd = STDIN_FILENO;
     args->write_fd = fd;
+    args->raw_stdin = raw_stdin;
     if (use_shell_protocol) {
         args->protocol.reset(new ShellProtocol(args->write_fd));
     }
 
-    stdin_raw_init(args->stdin_fd);
+    if (raw_stdin) {
+        stdin_raw_init(STDIN_FILENO);
+    }
 
     int exit_code = 0;
     if (!adb_thread_create(stdin_read_thread, args)) {
@@ -519,7 +575,12 @@
         exit_code = read_and_dump(fd, use_shell_protocol);
     }
 
-    stdin_raw_restore(args->stdin_fd);
+    if (raw_stdin) {
+        stdin_raw_restore(STDIN_FILENO);
+    }
+
+    // TODO(dpursell): properly exit stdin_read_thread and close |fd|.
+
     return exit_code;
 }
 
@@ -795,25 +856,6 @@
     return adb_command(cmd);
 }
 
-// Returns a shell service string with the indicated arguments and command.
-static std::string ShellServiceString(bool use_shell_protocol,
-                                      const std::string& type_arg,
-                                      const std::string& command) {
-    std::vector<std::string> args;
-    if (use_shell_protocol) {
-        args.push_back(kShellServiceArgShellProtocol);
-    }
-    if (!type_arg.empty()) {
-        args.push_back(type_arg);
-    }
-
-    // Shell service string can look like: shell[,arg1,arg2,...]:[command].
-    return android::base::StringPrintf("shell%s%s:%s",
-                                       args.empty() ? "" : ",",
-                                       android::base::Join(args, ',').c_str(),
-                                       command.c_str());
-}
-
 // Connects to the device "shell" service with |command| and prints the
 // resulting output.
 static int send_shell_command(TransportType transport_type, const char* serial,
@@ -1320,51 +1362,26 @@
             }
         }
 
+        std::string command;
+        if (argc) {
+            // We don't escape here, just like ssh(1). http://b/20564385.
+            command = android::base::Join(
+                    std::vector<const char*>(argv, argv + argc), ' ');
+        }
+
         if (h) {
             printf("\x1b[41;33m");
             fflush(stdout);
         }
 
-        if (!argc) {
-            D("starting interactive shell");
-            std::string service_string =
-                    ShellServiceString(use_shell_protocol, shell_type_arg, "");
-            r = interactive_shell(service_string, use_shell_protocol);
-            if (h) {
-                printf("\x1b[0m");
-                fflush(stdout);
-            }
-            return r;
+        r = RemoteShell(use_shell_protocol, shell_type_arg, command);
+
+        if (h) {
+            printf("\x1b[0m");
+            fflush(stdout);
         }
 
-        // We don't escape here, just like ssh(1). http://b/20564385.
-        std::string command = android::base::Join(
-                std::vector<const char*>(argv, argv + argc), ' ');
-        std::string service_string =
-                ShellServiceString(use_shell_protocol, shell_type_arg, command);
-
-        while (true) {
-            D("non-interactive shell loop. cmd=%s", service_string.c_str());
-            std::string error;
-            int fd = adb_connect(service_string, &error);
-            int r;
-            if (fd >= 0) {
-                D("about to read_and_dump(fd=%d)", fd);
-                r = read_and_dump(fd, use_shell_protocol);
-                D("read_and_dump() done.");
-                adb_close(fd);
-            } else {
-                fprintf(stderr,"error: %s\n", error.c_str());
-                r = -1;
-            }
-
-            if (h) {
-                printf("\x1b[0m");
-                fflush(stdout);
-            }
-            D("non-interactive shell loop. return r=%d", r);
-            return r;
-        }
+        return r;
     }
     else if (!strcmp(argv[0], "exec-in") || !strcmp(argv[0], "exec-out")) {
         int exec_in = !strcmp(argv[0], "exec-in");
diff --git a/adb/set_verity_enable_state_service.cpp b/adb/set_verity_enable_state_service.cpp
index fd1740d..f5188e9 100644
--- a/adb/set_verity_enable_state_service.cpp
+++ b/adb/set_verity_enable_state_service.cpp
@@ -28,10 +28,11 @@
 
 #include "adb.h"
 #include "adb_io.h"
-#include "ext4_sb.h"
 #include "fs_mgr.h"
 #include "remount_service.h"
 
+#include "fec/io.h"
+
 #define FSTAB_PREFIX "/fstab."
 struct fstab *fstab;
 
@@ -41,115 +42,50 @@
 static const bool kAllowDisableVerity = false;
 #endif
 
-static int get_target_device_size(int fd, const char *blk_device,
-                                  uint64_t *device_size)
-{
-    int data_device;
-    struct ext4_super_block sb;
-    struct fs_info info;
-
-    info.len = 0;  /* Only len is set to 0 to ask the device for real size. */
-
-    data_device = adb_open(blk_device, O_RDONLY | O_CLOEXEC);
-    if (data_device < 0) {
-        WriteFdFmt(fd, "Error opening block device (%s)\n", strerror(errno));
-        return -1;
-    }
-
-    if (lseek64(data_device, 1024, SEEK_SET) < 0) {
-        WriteFdFmt(fd, "Error seeking to superblock\n");
-        adb_close(data_device);
-        return -1;
-    }
-
-    if (adb_read(data_device, &sb, sizeof(sb)) != sizeof(sb)) {
-        WriteFdFmt(fd, "Error reading superblock\n");
-        adb_close(data_device);
-        return -1;
-    }
-
-    ext4_parse_sb(&sb, &info);
-    *device_size = info.len;
-
-    adb_close(data_device);
-    return 0;
-}
-
 /* Turn verity on/off */
 static int set_verity_enabled_state(int fd, const char *block_device,
                                     const char* mount_point, bool enable)
 {
-    uint32_t magic_number;
-    const uint32_t new_magic = enable ? VERITY_METADATA_MAGIC_NUMBER
-                                      : VERITY_METADATA_MAGIC_DISABLE;
-    uint64_t device_length = 0;
-    int device = -1;
-    int retval = -1;
-
     if (!make_block_device_writable(block_device)) {
         WriteFdFmt(fd, "Could not make block device %s writable (%s).\n",
                    block_device, strerror(errno));
-        goto errout;
+        return -1;
     }
 
-    device = adb_open(block_device, O_RDWR | O_CLOEXEC);
-    if (device == -1) {
+    fec::io fh(block_device, O_RDWR);
+
+    if (!fh) {
         WriteFdFmt(fd, "Could not open block device %s (%s).\n", block_device, strerror(errno));
-        WriteFdFmt(fd, "Maybe run adb remount?\n");
-        goto errout;
+        WriteFdFmt(fd, "Maybe run adb root?\n");
+        return -1;
     }
 
-    // find the start of the verity metadata
-    if (get_target_device_size(fd, (char*)block_device, &device_length) < 0) {
-        WriteFdFmt(fd, "Could not get target device size.\n");
-        goto errout;
+    fec_verity_metadata metadata;
+
+    if (!fh.get_verity_metadata(metadata)) {
+        WriteFdFmt(fd, "Couldn't find verity metadata!\n");
+        return -1;
     }
 
-    if (lseek64(device, device_length, SEEK_SET) < 0) {
-        WriteFdFmt(fd, "Could not seek to start of verity metadata block.\n");
-        goto errout;
-    }
-
-    // check the magic number
-    if (adb_read(device, &magic_number, sizeof(magic_number)) != sizeof(magic_number)) {
-        WriteFdFmt(fd, "Couldn't read magic number!\n");
-        goto errout;
-    }
-
-    if (!enable && magic_number == VERITY_METADATA_MAGIC_DISABLE) {
+    if (!enable && metadata.disabled) {
         WriteFdFmt(fd, "Verity already disabled on %s\n", mount_point);
-        goto errout;
+        return -1;
     }
 
-    if (enable && magic_number == VERITY_METADATA_MAGIC_NUMBER) {
+    if (enable && !metadata.disabled) {
         WriteFdFmt(fd, "Verity already enabled on %s\n", mount_point);
-        goto errout;
+        return -1;
     }
 
-    if (magic_number != VERITY_METADATA_MAGIC_NUMBER
-            && magic_number != VERITY_METADATA_MAGIC_DISABLE) {
-        WriteFdFmt(fd, "Couldn't find verity metadata at offset %" PRIu64 "!\n", device_length);
-        goto errout;
-    }
-
-    if (lseek64(device, device_length, SEEK_SET) < 0) {
-        WriteFdFmt(fd, "Could not seek to start of verity metadata block.\n");
-        goto errout;
-    }
-
-    if (adb_write(device, &new_magic, sizeof(new_magic)) != sizeof(new_magic)) {
+    if (!fh.set_verity_status(enable)) {
         WriteFdFmt(fd, "Could not set verity %s flag on device %s with error %s\n",
                    enable ? "enabled" : "disabled",
                    block_device, strerror(errno));
-        goto errout;
+        return -1;
     }
 
     WriteFdFmt(fd, "Verity %s on %s\n", enable ? "enabled" : "disabled", mount_point);
-    retval = 0;
-errout:
-    if (device != -1)
-        adb_close(device);
-    return retval;
+    return 0;
 }
 
 void set_verity_enabled_state_service(int fd, void* cookie)
diff --git a/adb/shell_service.cpp b/adb/shell_service.cpp
index 8aeea81..544afce 100644
--- a/adb/shell_service.cpp
+++ b/adb/shell_service.cpp
@@ -382,7 +382,7 @@
     subprocess->PassDataStreams();
     subprocess->WaitForExit();
 
-    D("deleting Subprocess");
+    D("deleting Subprocess for PID %d", subprocess->pid());
     delete subprocess;
 
     return nullptr;
@@ -501,11 +501,31 @@
             return &protocol_sfd_;
         }
 
-        // We only care about stdin packets.
-        if (stdinout_sfd_.valid() && input_->id() == ShellProtocol::kIdStdin) {
-            input_bytes_left_ = input_->data_length();
-        } else {
-            input_bytes_left_ = 0;
+        if (stdinout_sfd_.valid()) {
+            switch (input_->id()) {
+                case ShellProtocol::kIdStdin:
+                    input_bytes_left_ = input_->data_length();
+                    break;
+                case ShellProtocol::kIdCloseStdin:
+                    if (type_ == SubprocessType::kRaw) {
+                        if (adb_shutdown(stdinout_sfd_.fd(), SHUT_WR) == 0) {
+                            return nullptr;
+                        }
+                        PLOG(ERROR) << "failed to shutdown writes to FD "
+                                    << stdinout_sfd_.fd();
+                        return &stdinout_sfd_;
+                    } else {
+                        // PTYs can't close just input, so rather than close the
+                        // FD and risk losing subprocess output, leave it open.
+                        // This only happens if the client starts a PTY shell
+                        // non-interactively which is rare and unsupported.
+                        // If necessary, the client can manually close the shell
+                        // with `exit` or by killing the adb client process.
+                        D("can't close input for PTY FD %d",
+                          stdinout_sfd_.fd());
+                    }
+                    break;
+            }
         }
     }
 
@@ -532,7 +552,9 @@
 ScopedFd* Subprocess::PassOutput(ScopedFd* sfd, ShellProtocol::Id id) {
     int bytes = adb_read(sfd->fd(), output_->data(), output_->data_capacity());
     if (bytes == 0 || (bytes < 0 && errno != EAGAIN)) {
-        if (bytes < 0) {
+        // read() returns EIO if a PTY closes; don't report this as an error,
+        // it just means the subprocess completed.
+        if (bytes < 0 && !(type_ == SubprocessType::kPty && errno == EIO)) {
             PLOG(ERROR) << "error reading output FD " << sfd->fd();
         }
         return sfd;
diff --git a/adb/shell_service.h b/adb/shell_service.h
index 8868f10..01410a9 100644
--- a/adb/shell_service.h
+++ b/adb/shell_service.h
@@ -50,11 +50,12 @@
   public:
     // This is an unscoped enum to make it easier to compare against raw bytes.
     enum Id : uint8_t {
-        kIdStdin  = 0,
+        kIdStdin = 0,
         kIdStdout = 1,
         kIdStderr = 2,
-        kIdExit   = 3,
-        kIdInvalid  = 255,  // Indicates an invalid or unknown packet.
+        kIdExit = 3,
+        kIdCloseStdin = 4,  // Close subprocess stdin if possible.
+        kIdInvalid = 255,  // Indicates an invalid or unknown packet.
     };
 
     // ShellPackets will probably be too large to allocate on the stack so they
diff --git a/adb/shell_service_test.cpp b/adb/shell_service_test.cpp
index 20efd84..e18f905 100644
--- a/adb/shell_service_test.cpp
+++ b/adb/shell_service_test.cpp
@@ -245,6 +245,25 @@
     EXPECT_FALSE(stdout.find("--abc123--") == std::string::npos);
 }
 
+// Tests closing raw subprocess stdin.
+TEST_F(ShellServiceTest, CloseClientStdin) {
+    ASSERT_NO_FATAL_FAILURE(StartTestSubprocess(
+            "cat; echo TEST_DONE",
+            SubprocessType::kRaw, SubprocessProtocol::kShell));
+
+    std::string input = "foo\nbar";
+    ShellProtocol* protocol = new ShellProtocol(subprocess_fd_);
+    memcpy(protocol->data(), input.data(), input.length());
+    ASSERT_TRUE(protocol->Write(ShellProtocol::kIdStdin, input.length()));
+    ASSERT_TRUE(protocol->Write(ShellProtocol::kIdCloseStdin, 0));
+    delete protocol;
+
+    std::string stdout, stderr;
+    EXPECT_EQ(0, ReadShellProtocol(subprocess_fd_, &stdout, &stderr));
+    ExpectLinesEqual(stdout, {"foo", "barTEST_DONE"});
+    ExpectLinesEqual(stderr, {});
+}
+
 // Tests that nothing breaks when the stdin/stdout pipe closes.
 TEST_F(ShellServiceTest, CloseStdinStdoutSubprocess) {
     ASSERT_NO_FATAL_FAILURE(StartTestSubprocess(
diff --git a/adb/sysdeps.h b/adb/sysdeps.h
index 5918a94..51d09a6 100644
--- a/adb/sysdeps.h
+++ b/adb/sysdeps.h
@@ -319,6 +319,9 @@
 
 #define getcwd adb_getcwd
 
+char* adb_strerror(int err);
+#define strerror adb_strerror
+
 // Convert from UTF-8 to UTF-16, typically used to convert char strings into
 // wchar_t strings that can be passed to wchar_t-based OS and C Runtime APIs
 // on Windows.
@@ -488,6 +491,10 @@
 {
     return shutdown(fd, SHUT_RDWR);
 }
+static __inline__ int  adb_shutdown(int fd, int direction)
+{
+    return shutdown(fd, direction);
+}
 #undef   shutdown
 #define  shutdown   ____xxx_shutdown
 
diff --git a/adb/sysdeps_win32.cpp b/adb/sysdeps_win32.cpp
index 42f6d9b..fd75320 100644
--- a/adb/sysdeps_win32.cpp
+++ b/adb/sysdeps_win32.cpp
@@ -556,6 +556,82 @@
     return 0;
 }
 
+// Overrides strerror() to handle error codes not supported by the Windows C
+// Runtime (MSVCRT.DLL).
+char* adb_strerror(int err) {
+    // sysdeps.h defines strerror to adb_strerror, but in this function, we
+    // want to call the real C Runtime strerror().
+#pragma push_macro("strerror")
+#undef strerror
+    const int saved_err = errno;      // Save because we overwrite it later.
+
+    // Lookup the string for an unknown error.
+    char* errmsg = strerror(-1);
+    char unknown_error[(errmsg == nullptr ? 0 : strlen(errmsg)) + 1];
+    strcpy(unknown_error, errmsg == nullptr ? "" : errmsg);
+
+    // Lookup the string for this error to see if the C Runtime has it.
+    errmsg = strerror(err);
+    if ((errmsg != nullptr) && strcmp(errmsg, unknown_error)) {
+        // The CRT returned an error message and it is different than the error
+        // message for an unknown error, so it is probably valid, so use it.
+    } else {
+        // Check if we have a string for this error code.
+        const char* custom_msg = nullptr;
+        switch (err) {
+#pragma push_macro("ERR")
+#undef ERR
+#define ERR(errnum, desc) case errnum: custom_msg = desc; break
+            // These error strings are from AOSP bionic/libc/include/sys/_errdefs.h.
+            // Note that these cannot be longer than 94 characters because we
+            // pass this to _strerror() which has that requirement.
+            ERR(ECONNRESET,    "Connection reset by peer");
+            ERR(EHOSTUNREACH,  "No route to host");
+            ERR(ENETDOWN,      "Network is down");
+            ERR(ENETRESET,     "Network dropped connection because of reset");
+            ERR(ENOBUFS,       "No buffer space available");
+            ERR(ENOPROTOOPT,   "Protocol not available");
+            ERR(ENOTCONN,      "Transport endpoint is not connected");
+            ERR(ENOTSOCK,      "Socket operation on non-socket");
+            ERR(EOPNOTSUPP,    "Operation not supported on transport endpoint");
+#pragma pop_macro("ERR")
+        }
+
+        if (custom_msg != nullptr) {
+            // Use _strerror() to write our string into the writable per-thread
+            // buffer used by strerror()/_strerror(). _strerror() appends the
+            // msg for the current value of errno, so set errno to a consistent
+            // value for every call so that our code-path is always the same.
+            errno = 0;
+            errmsg = _strerror(custom_msg);
+            const size_t custom_msg_len = strlen(custom_msg);
+            // Just in case _strerror() returned a read-only string, check if
+            // the returned string starts with our custom message because that
+            // implies that the string is not read-only.
+            if ((errmsg != nullptr) &&
+                !strncmp(custom_msg, errmsg, custom_msg_len)) {
+                // _strerror() puts other text after our custom message, so
+                // remove that by terminating after our message.
+                errmsg[custom_msg_len] = '\0';
+            } else {
+                // For some reason nullptr was returned or a pointer to a
+                // read-only string was returned, so fallback to whatever
+                // strerror() can muster (probably "Unknown error" or some
+                // generic CRT error string).
+                errmsg = strerror(err);
+            }
+        } else {
+            // We don't have a custom message, so use whatever strerror(err)
+            // returned earlier.
+        }
+    }
+
+    errno = saved_err;  // restore
+
+    return errmsg;
+#pragma pop_macro("strerror")
+}
+
 /**************************************************************************/
 /**************************************************************************/
 /*****                                                                *****/
@@ -567,18 +643,38 @@
 #undef setsockopt
 
 static void _socket_set_errno( const DWORD err ) {
-    // The Windows C Runtime (MSVCRT.DLL) strerror() does not support a lot of
-    // POSIX and socket error codes, so this can only meaningfully map so much.
+    // Because the Windows C Runtime (MSVCRT.DLL) strerror() does not support a
+    // lot of POSIX and socket error codes, some of the resulting error codes
+    // are mapped to strings by adb_strerror() above.
     switch ( err ) {
     case 0:              errno = 0; break;
+    // Don't map WSAEINTR since that is only for Winsock 1.1 which we don't use.
+    // case WSAEINTR:    errno = EINTR; break;
+    case WSAEFAULT:      errno = EFAULT; break;
+    case WSAEINVAL:      errno = EINVAL; break;
+    case WSAEMFILE:      errno = EMFILE; break;
     // Mapping WSAEWOULDBLOCK to EAGAIN is absolutely critical because
     // non-blocking sockets can cause an error code of WSAEWOULDBLOCK and
     // callers check specifically for EAGAIN.
     case WSAEWOULDBLOCK: errno = EAGAIN; break;
-    case WSAEINTR:       errno = EINTR; break;
-    case WSAEFAULT:      errno = EFAULT; break;
-    case WSAEINVAL:      errno = EINVAL; break;
-    case WSAEMFILE:      errno = EMFILE; break;
+    case WSAENOTSOCK:    errno = ENOTSOCK; break;
+    case WSAENOPROTOOPT: errno = ENOPROTOOPT; break;
+    case WSAEOPNOTSUPP:  errno = EOPNOTSUPP; break;
+    case WSAENETDOWN:    errno = ENETDOWN; break;
+    case WSAENETRESET:   errno = ENETRESET; break;
+    // Map WSAECONNABORTED to EPIPE instead of ECONNABORTED because POSIX seems
+    // to use EPIPE for these situations and there are some callers that look
+    // for EPIPE.
+    case WSAECONNABORTED: errno = EPIPE; break;
+    case WSAECONNRESET:  errno = ECONNRESET; break;
+    case WSAENOBUFS:     errno = ENOBUFS; break;
+    case WSAENOTCONN:    errno = ENOTCONN; break;
+    // Don't map WSAETIMEDOUT because we don't currently use SO_RCVTIMEO or
+    // SO_SNDTIMEO which would cause WSAETIMEDOUT to be returned. Future
+    // considerations: Reportedly send() can return zero on timeout, and POSIX
+    // code may expect EAGAIN instead of ETIMEDOUT on timeout.
+    // case WSAETIMEDOUT: errno = ETIMEDOUT; break;
+    case WSAEHOSTUNREACH: errno = EHOSTUNREACH; break;
     default:
         errno = EINVAL;
         D( "_socket_set_errno: mapping Windows error code %lu to errno %d",
@@ -655,8 +751,12 @@
     int  result = send(f->fh_socket, reinterpret_cast<const char*>(buf), len, 0);
     if (result == SOCKET_ERROR) {
         const DWORD err = WSAGetLastError();
-        D("send fd %d failed: %s", _fh_to_int(f),
-          SystemErrorCodeToString(err).c_str());
+        // WSAEWOULDBLOCK is normal with a non-blocking socket, so don't trace
+        // that to reduce spam and confusion.
+        if (err != WSAEWOULDBLOCK) {
+            D("send fd %d failed: %s", _fh_to_int(f),
+              SystemErrorCodeToString(err).c_str());
+        }
         _socket_set_errno(err);
         result = -1;
     } else {
@@ -3265,6 +3365,15 @@
         // terminal.
         return _console_read(_console_handle, buf, len);
     } else {
+        // On older versions of Windows (definitely 7, definitely not 10),
+        // ReadConsole() with a size >= 31367 fails, so if |fd| is a console
+        // we need to limit the read size. This may also catch devices like NUL,
+        // but that is OK as we just want to avoid capping pipes and files which
+        // don't need size limiting. This isatty() test is very simple and quick
+        // and doesn't call the OS.
+        if (isatty(fd) && len > 4096) {
+            len = 4096;
+        }
         // Just call into C Runtime which can read from pipes/files and which
         // can do LF/CR translation (which is overridable with _setmode()).
         // Undefine the macro that is set in sysdeps.h which bans calls to
diff --git a/adb/sysdeps_win32_test.cpp b/adb/sysdeps_win32_test.cpp
index cc3ac5c..66d1ba8 100755
--- a/adb/sysdeps_win32_test.cpp
+++ b/adb/sysdeps_win32_test.cpp
@@ -67,3 +67,29 @@
         EXPECT_GT(strlen(path_val), 0);
     }
 }
+
+void TestAdbStrError(int err, const char* expected) {
+    errno = 12345;
+    const char* result = adb_strerror(err);
+    // Check that errno is not overwritten.
+    EXPECT_EQ(12345, errno);
+    EXPECT_STREQ(expected, result);
+}
+
+TEST(sysdeps_win32, adb_strerror) {
+    // Test an error code that should not have a mapped string. Use an error
+    // code that is not used by the internal implementation of adb_strerror().
+    TestAdbStrError(-2, "Unknown error");
+    // adb_strerror() uses -1 internally, so test that it can still be passed
+    // as a parameter.
+    TestAdbStrError(-1, "Unknown error");
+    // Test very big, positive unknown error.
+    TestAdbStrError(1000000, "Unknown error");
+    // Test success case.
+    TestAdbStrError(0, "No error");
+    // Test error that regular strerror() should have a string for.
+    TestAdbStrError(EPERM, "Operation not permitted");
+    // Test error that regular strerror() doesn't have a string for, but that
+    // adb_strerror() returns.
+    TestAdbStrError(ECONNRESET, "Connection reset by peer");
+}
diff --git a/base/logging_test.cpp b/base/logging_test.cpp
index 9cf1aad..70f9952 100644
--- a/base/logging_test.cpp
+++ b/base/logging_test.cpp
@@ -139,7 +139,7 @@
   {
     CapturedStderr cap;
     LOG(WARNING) << "foobar";
-    ASSERT_EQ(0, lseek(cap.fd(), SEEK_SET, 0));
+    ASSERT_EQ(0, lseek(cap.fd(), 0, SEEK_SET));
 
     std::string output;
     android::base::ReadFdToString(cap.fd(), &output);
@@ -155,7 +155,7 @@
   {
     CapturedStderr cap;
     LOG(INFO) << "foobar";
-    ASSERT_EQ(0, lseek(cap.fd(), SEEK_SET, 0));
+    ASSERT_EQ(0, lseek(cap.fd(), 0, SEEK_SET));
 
     std::string output;
     android::base::ReadFdToString(cap.fd(), &output);
@@ -171,7 +171,7 @@
   {
     CapturedStderr cap;
     LOG(DEBUG) << "foobar";
-    ASSERT_EQ(0, lseek(cap.fd(), SEEK_SET, 0));
+    ASSERT_EQ(0, lseek(cap.fd(), 0, SEEK_SET));
 
     std::string output;
     android::base::ReadFdToString(cap.fd(), &output);
@@ -182,7 +182,7 @@
     android::base::ScopedLogSeverity severity(android::base::DEBUG);
     CapturedStderr cap;
     LOG(DEBUG) << "foobar";
-    ASSERT_EQ(0, lseek(cap.fd(), SEEK_SET, 0));
+    ASSERT_EQ(0, lseek(cap.fd(), 0, SEEK_SET));
 
     std::string output;
     android::base::ReadFdToString(cap.fd(), &output);
@@ -202,7 +202,7 @@
     LOG(INFO) << (errno = 67890);
     EXPECT_EQ(12345, errno) << "errno was not restored";
 
-    ASSERT_EQ(0, lseek(cap.fd(), SEEK_SET, 0));
+    ASSERT_EQ(0, lseek(cap.fd(), 0, SEEK_SET));
 
     std::string output;
     android::base::ReadFdToString(cap.fd(), &output);
@@ -245,7 +245,7 @@
     CapturedStderr cap;
     errno = ENOENT;
     PLOG(INFO) << "foobar";
-    ASSERT_EQ(0, lseek(cap.fd(), SEEK_SET, 0));
+    ASSERT_EQ(0, lseek(cap.fd(), 0, SEEK_SET));
 
     std::string output;
     android::base::ReadFdToString(cap.fd(), &output);
@@ -264,7 +264,7 @@
     CapturedStderr cap;
     errno = ENOENT;
     UNIMPLEMENTED(ERROR);
-    ASSERT_EQ(0, lseek(cap.fd(), SEEK_SET, 0));
+    ASSERT_EQ(0, lseek(cap.fd(), 0, SEEK_SET));
 
     std::string output;
     android::base::ReadFdToString(cap.fd(), &output);
diff --git a/crash_reporter/Android.mk b/crash_reporter/Android.mk
index 8756956..5dd9418 100644
--- a/crash_reporter/Android.mk
+++ b/crash_reporter/Android.mk
@@ -60,6 +60,7 @@
 LOCAL_REQUIRED_MODULES := core2md \
     crash_reporter_logs.conf \
     crash_sender \
+    crash_server \
     dbus-send
 LOCAL_INIT_RC := crash_reporter.rc
 LOCAL_RTTI_FLAG := -frtti
@@ -92,6 +93,23 @@
 LOCAL_SRC_FILES := $(warn_collector_src)
 include $(BUILD_EXECUTABLE)
 
+# /etc/os-release.d/crash_server configuration file.
+# ========================================================
+ifdef OSRELEASED_DIRECTORY
+include $(CLEAR_VARS)
+LOCAL_MODULE := crash_server
+LOCAL_MODULE_CLASS := ETC
+LOCAL_MODULE_PATH := $(TARGET_OUT_ETC)/$(OSRELEASED_DIRECTORY)
+include $(BUILD_SYSTEM)/base_rules.mk
+
+# If the crash server isn't set, use a blank value.  crash_sender
+# will log it as a configuration error.
+$(LOCAL_BUILT_MODULE): BRILLO_CRASH_SERVER ?= ""
+$(LOCAL_BUILT_MODULE):
+	$(hide)mkdir -p $(dir $@)
+	echo $(BRILLO_CRASH_SERVER) > $@
+endif
+
 # Crash reporter logs conf file.
 # ========================================================
 include $(CLEAR_VARS)
diff --git a/crash_reporter/crash_reporter.rc b/crash_reporter/crash_reporter.rc
index 7bfe0c2..57c1d40 100644
--- a/crash_reporter/crash_reporter.rc
+++ b/crash_reporter/crash_reporter.rc
@@ -5,7 +5,7 @@
 on property:crash_reporter.coredump.enabled=0
     write /proc/sys/kernel/core_pattern "core"
 
-on boot
+on post-fs-data
     # Allow catching multiple unrelated concurrent crashes, but use a finite
     # number to prevent infinitely recursing on crash handling.
     write /proc/sys/kernel/core_pipe_limit 4
diff --git a/crash_reporter/crash_sender b/crash_reporter/crash_sender
index 1f58792..5b859a8 100755
--- a/crash_reporter/crash_sender
+++ b/crash_reporter/crash_sender
@@ -78,6 +78,9 @@
 # The weave configuration file.
 WEAVE_CONF_FILE="/etc/weaved/weaved.conf"
 
+# The os-release.d folder.
+OSRELEASED_FOLDER="/etc/os-release.d"
+
 # The syslog tag for all logging we emit.
 TAG="$(basename $0)[$$]"
 
@@ -256,7 +259,12 @@
 get_key_value() {
   local file="$1" key="$2" value
 
-  if [ -f "${file}" ]; then
+  if [ -f "${file}/${key}" ]; then
+    # Get the value from a folder where each key is its own file.  The key
+    # file's entire contents is the value.
+    value=$(cat "${file}/${key}")
+  elif [ -f "${file}" ]; then
+    # Get the value from a file that has multiple key=value combinations.
     # Return the first entry.  There shouldn't be more than one anyways.
     # Substr at length($1) + 2 skips past the key and following = sign (awk
     # uses 1-based indexes), but preserves embedded = characters.
@@ -291,7 +299,7 @@
   local report_payload="$(get_key_value "${meta_path}" "payload")"
   local kind="$(get_kind "${meta_path}")"
   local exec_name="$(get_key_value "${meta_path}" "exec_name")"
-  local url="$(getprop crash_reporter.server)"
+  local url="$(get_key_value "${OSRELEASED_FOLDER}" "crash_server")"
   local bdk_version="$(get_key_value "${meta_path}" "bdk_version")"
   local hwclass="$(get_hardware_class)"
   local write_payload_size="$(get_key_value "${meta_path}" "payload_size")"
diff --git a/debuggerd/debuggerd.cpp b/debuggerd/debuggerd.cpp
index 713638d..1287fb9 100644
--- a/debuggerd/debuggerd.cpp
+++ b/debuggerd/debuggerd.cpp
@@ -528,7 +528,7 @@
     return 1;
   fcntl(s, F_SETFD, FD_CLOEXEC);
 
-  ALOGI("debuggerd: " __DATE__ " " __TIME__ "\n");
+  ALOGI("debuggerd: starting\n");
 
   for (;;) {
     sockaddr addr;
diff --git a/fs_mgr/Android.mk b/fs_mgr/Android.mk
index b47199f..28fff3f 100644
--- a/fs_mgr/Android.mk
+++ b/fs_mgr/Android.mk
@@ -1,49 +1,59 @@
 # Copyright 2011 The Android Open Source Project
 
 LOCAL_PATH:= $(call my-dir)
+
+common_static_libraries := \
+    liblogwrap \
+    libfec \
+    libfec_rs \
+    libbase \
+    libmincrypt \
+    libcrypto_static \
+    libext4_utils_static \
+    libsquashfs_utils
+
 include $(CLEAR_VARS)
-
-LOCAL_SRC_FILES:= fs_mgr.c fs_mgr_verity.cpp fs_mgr_fstab.c
-LOCAL_SRC_FILES += fs_mgr_format.c fs_mgr_slotselect.c
-
-LOCAL_C_INCLUDES := $(LOCAL_PATH)/include \
+LOCAL_CLANG := true
+LOCAL_SANITIZE := integer
+LOCAL_SRC_FILES:= \
+    fs_mgr.c \
+    fs_mgr_format.c \
+    fs_mgr_fstab.c \
+    fs_mgr_slotselect.c \
+    fs_mgr_verity.cpp
+LOCAL_C_INCLUDES := \
+    $(LOCAL_PATH)/include \
     system/vold \
     system/extras/ext4_utils \
-    external/openssl/include
-
+    external/openssl/include \
+    bootable/recovery
 LOCAL_MODULE:= libfs_mgr
-LOCAL_STATIC_LIBRARIES := liblogwrap libmincrypt libext4_utils_static libsquashfs_utils libbase
-LOCAL_C_INCLUDES += system/extras/ext4_utils system/extras/squashfs_utils \
-	bootable/recovery
+LOCAL_STATIC_LIBRARIES := $(common_static_libraries)
 LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)/include
 LOCAL_CFLAGS := -Werror
-
 ifneq (,$(filter userdebug,$(TARGET_BUILD_VARIANT)))
 LOCAL_CFLAGS += -DALLOW_ADBD_DISABLE_VERITY=1
 endif
-
 include $(BUILD_STATIC_LIBRARY)
 
-
-
 include $(CLEAR_VARS)
-
+LOCAL_CLANG := true
+LOCAL_SANITIZE := integer
 LOCAL_SRC_FILES:= fs_mgr_main.c
-
 LOCAL_C_INCLUDES := $(LOCAL_PATH)/include
-
 LOCAL_MODULE:= fs_mgr
-
 LOCAL_MODULE_TAGS := optional
 LOCAL_FORCE_STATIC_EXECUTABLE := true
 LOCAL_MODULE_PATH := $(TARGET_ROOT_OUT)/sbin
 LOCAL_UNSTRIPPED_PATH := $(TARGET_ROOT_OUT_UNSTRIPPED)
-
-LOCAL_STATIC_LIBRARIES := libfs_mgr liblogwrap libcutils liblog libc libmincrypt libext4_utils_static libsquashfs_utils libbase
-LOCAL_STATIC_LIBRARIES += libsparse_static libz libselinux
+LOCAL_STATIC_LIBRARIES := libfs_mgr \
+    $(common_static_libraries) \
+    libcutils \
+    liblog \
+    libc \
+    libsparse_static \
+    libz \
+    libselinux
 LOCAL_CXX_STL := libc++_static
-
 LOCAL_CFLAGS := -Werror
-
 include $(BUILD_EXECUTABLE)
-
diff --git a/fs_mgr/fs_mgr_verity.cpp b/fs_mgr/fs_mgr_verity.cpp
index 8f7c6a2..c358982 100644
--- a/fs_mgr/fs_mgr_verity.cpp
+++ b/fs_mgr/fs_mgr_verity.cpp
@@ -38,8 +38,7 @@
 #include "mincrypt/sha.h"
 #include "mincrypt/sha256.h"
 
-#include "ext4_sb.h"
-#include "squashfs_utils.h"
+#include "fec/io.h"
 
 #include "fs_mgr.h"
 #include "fs_mgr_priv.h"
@@ -47,11 +46,19 @@
 
 #define FSTAB_PREFIX "/fstab."
 
-#define VERITY_METADATA_SIZE 32768
 #define VERITY_TABLE_RSA_KEY "/verity_key"
 #define VERITY_TABLE_HASH_IDX 8
 #define VERITY_TABLE_SALT_IDX 9
 
+#define VERITY_TABLE_OPT_RESTART "restart_on_corruption"
+#define VERITY_TABLE_OPT_LOGGING "ignore_corruption"
+#define VERITY_TABLE_OPT_IGNZERO "ignore_zero_blocks"
+
+#define VERITY_TABLE_OPT_FEC_FORMAT \
+    "use_fec_from_device %s fec_start %" PRIu64 " fec_blocks %" PRIu64 \
+    " fec_roots %u " VERITY_TABLE_OPT_IGNZERO
+#define VERITY_TABLE_OPT_FEC_ARGS 9
+
 #define METADATA_MAGIC 0x01564c54
 #define METADATA_TAG_MAX_LENGTH 63
 #define METADATA_EOD "eod"
@@ -92,7 +99,7 @@
     }
 
     if (!fread(key, sizeof(*key), 1, f)) {
-        ERROR("Could not read key!");
+        ERROR("Could not read key!\n");
         fclose(f);
         free(key);
         return NULL;
@@ -109,7 +116,8 @@
     return key;
 }
 
-static int verify_table(char *signature, char *table, int table_length)
+static int verify_table(const uint8_t *signature, const char *table,
+        uint32_t table_length)
 {
     RSAPublicKey *key;
     uint8_t hash_buf[SHA256_DIGEST_SIZE];
@@ -121,17 +129,17 @@
     // Now get the public key from the keyfile
     key = load_key(VERITY_TABLE_RSA_KEY);
     if (!key) {
-        ERROR("Couldn't load verity keys");
+        ERROR("Couldn't load verity keys\n");
         goto out;
     }
 
     // verify the result
     if (!RSA_verify(key,
-                    (uint8_t*) signature,
+                    signature,
                     RSANUMBYTES,
                     (uint8_t*) hash_buf,
                     SHA256_DIGEST_SIZE)) {
-        ERROR("Couldn't verify table.");
+        ERROR("Couldn't verify table\n");
         goto out;
     }
 
@@ -142,11 +150,11 @@
     return retval;
 }
 
-static int invalidate_table(char *table, int table_length)
+static int invalidate_table(char *table, size_t table_length)
 {
-    int n = 0;
-    int idx = 0;
-    int cleared = 0;
+    size_t n = 0;
+    size_t idx = 0;
+    size_t cleared = 0;
 
     while (n < table_length) {
         if (table[n++] == ' ') {
@@ -169,177 +177,6 @@
     return -1;
 }
 
-static int squashfs_get_target_device_size(char *blk_device, uint64_t *device_size)
-{
-    struct squashfs_info sq_info;
-
-    if (squashfs_parse_sb(blk_device, &sq_info) >= 0) {
-        *device_size = sq_info.bytes_used_4K_padded;
-        return 0;
-    } else {
-        return -1;
-    }
-}
-
-static int ext4_get_target_device_size(char *blk_device, uint64_t *device_size)
-{
-    int data_device;
-    struct ext4_super_block sb;
-    struct fs_info info;
-
-    info.len = 0;  /* Only len is set to 0 to ask the device for real size. */
-
-    data_device = TEMP_FAILURE_RETRY(open(blk_device, O_RDONLY | O_CLOEXEC));
-    if (data_device == -1) {
-        ERROR("Error opening block device (%s)", strerror(errno));
-        return -1;
-    }
-
-    if (TEMP_FAILURE_RETRY(lseek64(data_device, 1024, SEEK_SET)) < 0) {
-        ERROR("Error seeking to superblock");
-        close(data_device);
-        return -1;
-    }
-
-    if (!android::base::ReadFully(data_device, &sb, sizeof(sb))) {
-        ERROR("Error reading superblock");
-        close(data_device);
-        return -1;
-    }
-
-    ext4_parse_sb(&sb, &info);
-    *device_size = info.len;
-
-    close(data_device);
-    return 0;
-}
-
-static int get_fs_size(char *fs_type, char *blk_device, uint64_t *device_size) {
-    if (!strcmp(fs_type, "ext4")) {
-        if (ext4_get_target_device_size(blk_device, device_size) < 0) {
-            ERROR("Failed to get ext4 fs size on %s.", blk_device);
-            return -1;
-        }
-    } else if (!strcmp(fs_type, "squashfs")) {
-        if (squashfs_get_target_device_size(blk_device, device_size) < 0) {
-            ERROR("Failed to get squashfs fs size on %s.", blk_device);
-            return -1;
-        }
-    } else {
-        ERROR("%s: Unsupported filesystem for verity.", fs_type);
-        return -1;
-    }
-    return 0;
-}
-
-static int read_verity_metadata(uint64_t device_size, char *block_device, char **signature,
-        char **table)
-{
-    unsigned magic_number;
-    unsigned table_length;
-    int protocol_version;
-    int device;
-    int retval = FS_MGR_SETUP_VERITY_FAIL;
-
-    *signature = NULL;
-
-    if (table) {
-        *table = NULL;
-    }
-
-    device = TEMP_FAILURE_RETRY(open(block_device, O_RDONLY | O_CLOEXEC));
-    if (device == -1) {
-        ERROR("Could not open block device %s (%s).\n", block_device, strerror(errno));
-        goto out;
-    }
-
-    if (TEMP_FAILURE_RETRY(lseek64(device, device_size, SEEK_SET)) < 0) {
-        ERROR("Could not seek to start of verity metadata block.\n");
-        goto out;
-    }
-    // check the magic number
-    if (!android::base::ReadFully(device, &magic_number, sizeof(magic_number))) {
-        ERROR("Couldn't read magic number!\n");
-        goto out;
-    }
-
-#ifdef ALLOW_ADBD_DISABLE_VERITY
-    if (magic_number == VERITY_METADATA_MAGIC_DISABLE) {
-        retval = FS_MGR_SETUP_VERITY_DISABLED;
-        INFO("Attempt to cleanly disable verity - only works in USERDEBUG");
-        goto out;
-    }
-#endif
-
-    if (magic_number != VERITY_METADATA_MAGIC_NUMBER) {
-        ERROR("Couldn't find verity metadata at offset %" PRIu64 "!\n", device_size);
-        goto out;
-    }
-
-    // check the protocol version
-    if (!android::base::ReadFully(device, &protocol_version,
-            sizeof(protocol_version))) {
-        ERROR("Couldn't read verity metadata protocol version!\n");
-        goto out;
-    }
-    if (protocol_version != 0) {
-        ERROR("Got unknown verity metadata protocol version %d!\n", protocol_version);
-        goto out;
-    }
-
-    // get the signature
-    *signature = (char*) malloc(RSANUMBYTES);
-    if (!*signature) {
-        ERROR("Couldn't allocate memory for signature!\n");
-        goto out;
-    }
-    if (!android::base::ReadFully(device, *signature, RSANUMBYTES)) {
-        ERROR("Couldn't read signature from verity metadata!\n");
-        goto out;
-    }
-
-    if (!table) {
-        retval = FS_MGR_SETUP_VERITY_SUCCESS;
-        goto out;
-    }
-
-    // get the size of the table
-    if (!android::base::ReadFully(device, &table_length, sizeof(table_length))) {
-        ERROR("Couldn't get the size of the verity table from metadata!\n");
-        goto out;
-    }
-
-    // get the table + null terminator
-    *table = static_cast<char*>(malloc(table_length + 1));
-    if (!*table) {
-        ERROR("Couldn't allocate memory for verity table!\n");
-        goto out;
-    }
-    if (!android::base::ReadFully(device, *table, table_length)) {
-        ERROR("Couldn't read the verity table from metadata!\n");
-        goto out;
-    }
-
-    (*table)[table_length] = 0;
-    retval = FS_MGR_SETUP_VERITY_SUCCESS;
-
-out:
-    if (device != -1)
-        close(device);
-
-    if (retval != FS_MGR_SETUP_VERITY_SUCCESS) {
-        free(*signature);
-        *signature = NULL;
-
-        if (table) {
-            free(*table);
-            *table = NULL;
-        }
-    }
-
-    return retval;
-}
-
 static void verity_ioctl_init(struct dm_ioctl *io, char *name, unsigned flags)
 {
     memset(io, 0, DM_BUF_SIZE);
@@ -379,8 +216,76 @@
     return 0;
 }
 
-static int load_verity_table(struct dm_ioctl *io, char *name, uint64_t device_size, int fd, char *table,
-        int mode)
+struct verity_table_params {
+    const char *table;
+    int mode;
+    struct fec_ecc_metadata ecc;
+    const char *ecc_dev;
+};
+
+typedef bool (*format_verity_table_func)(char *buf, const size_t bufsize,
+        const struct verity_table_params *params);
+
+static bool format_verity_table(char *buf, const size_t bufsize,
+        const struct verity_table_params *params)
+{
+    const char *mode_flag = NULL;
+    int res = -1;
+
+    if (params->mode == VERITY_MODE_RESTART) {
+        mode_flag = VERITY_TABLE_OPT_RESTART;
+    } else if (params->mode == VERITY_MODE_LOGGING) {
+        mode_flag = VERITY_TABLE_OPT_LOGGING;
+    }
+
+    if (params->ecc.valid) {
+        if (mode_flag) {
+            res = snprintf(buf, bufsize,
+                    "%s %u %s " VERITY_TABLE_OPT_FEC_FORMAT,
+                    params->table, 1 + VERITY_TABLE_OPT_FEC_ARGS, mode_flag, params->ecc_dev,
+                    params->ecc.start / FEC_BLOCKSIZE, params->ecc.blocks, params->ecc.roots);
+        } else {
+            res = snprintf(buf, bufsize,
+                    "%s %u " VERITY_TABLE_OPT_FEC_FORMAT,
+                    params->table, VERITY_TABLE_OPT_FEC_ARGS, params->ecc_dev,
+                    params->ecc.start / FEC_BLOCKSIZE, params->ecc.blocks, params->ecc.roots);
+        }
+    } else if (mode_flag) {
+        res = snprintf(buf, bufsize, "%s 2 " VERITY_TABLE_OPT_IGNZERO " %s", params->table,
+                    mode_flag);
+    } else {
+        res = strlcpy(buf, params->table, bufsize);
+    }
+
+    if (res < 0 || (size_t)res >= bufsize) {
+        ERROR("Error building verity table; insufficient buffer size?\n");
+        return false;
+    }
+
+    return true;
+}
+
+static bool format_legacy_verity_table(char *buf, const size_t bufsize,
+        const struct verity_table_params *params)
+{
+    int res;
+
+    if (params->mode == VERITY_MODE_EIO) {
+        res = strlcpy(buf, params->table, bufsize);
+    } else {
+        res = snprintf(buf, bufsize, "%s %d", params->table, params->mode);
+    }
+
+    if (res < 0 || (size_t)res >= bufsize) {
+        ERROR("Error building verity table; insufficient buffer size?\n");
+        return false;
+    }
+
+    return true;
+}
+
+static int load_verity_table(struct dm_ioctl *io, char *name, uint64_t device_size, int fd,
+        const struct verity_table_params *params, format_verity_table_func format)
 {
     char *verity_params;
     char *buffer = (char*) io;
@@ -390,35 +295,32 @@
 
     struct dm_target_spec *tgt = (struct dm_target_spec *) &buffer[sizeof(struct dm_ioctl)];
 
-    // set tgt arguments here
+    // set tgt arguments
     io->target_count = 1;
-    tgt->status=0;
-    tgt->sector_start=0;
-    tgt->length=device_size/512;
+    tgt->status = 0;
+    tgt->sector_start = 0;
+    tgt->length = device_size / 512;
     strcpy(tgt->target_type, "verity");
 
-    // build the verity params here
+    // build the verity params
     verity_params = buffer + sizeof(struct dm_ioctl) + sizeof(struct dm_target_spec);
     bufsize = DM_BUF_SIZE - (verity_params - buffer);
 
-    if (mode == VERITY_MODE_EIO) {
-        // allow operation with older dm-verity drivers that are unaware
-        // of the mode parameter by omitting it; this also means that we
-        // cannot use logging mode with these drivers, they always cause
-        // an I/O error for corrupted blocks
-        strcpy(verity_params, table);
-    } else if (snprintf(verity_params, bufsize, "%s %d", table, mode) < 0) {
+    if (!format(verity_params, bufsize, params)) {
+        ERROR("Failed to format verity parameters\n");
         return -1;
     }
 
+    INFO("loading verity table: '%s'", verity_params);
+
     // set next target boundary
     verity_params += strlen(verity_params) + 1;
-    verity_params = (char*) (((unsigned long)verity_params + 7) & ~8);
+    verity_params = (char*)(((unsigned long)verity_params + 7) & ~8);
     tgt->next = verity_params - buffer;
 
     // send the ioctl to load the verity table
     if (ioctl(fd, DM_TABLE_LOAD, io)) {
-        ERROR("Error loading verity table (%s)", strerror(errno));
+        ERROR("Error loading verity table (%s)\n", strerror(errno));
         return -1;
     }
 
@@ -703,28 +605,31 @@
 static int compare_last_signature(struct fstab_rec *fstab, int *match)
 {
     char tag[METADATA_TAG_MAX_LENGTH + 1];
-    char *signature = NULL;
     int fd = -1;
     int rc = -1;
+    off64_t offset = 0;
+    struct fec_handle *f = NULL;
+    struct fec_verity_metadata verity;
     uint8_t curr[SHA256_DIGEST_SIZE];
     uint8_t prev[SHA256_DIGEST_SIZE];
-    off64_t offset = 0;
-    uint64_t device_size;
 
     *match = 1;
 
-    // get verity filesystem size
-    if (get_fs_size(fstab->fs_type, fstab->blk_device, &device_size) < 0) {
-        ERROR("Failed to get filesystem size\n");
+    if (fec_open(&f, fstab->blk_device, O_RDONLY, FEC_VERITY_DISABLE,
+            FEC_DEFAULT_ROOTS) == -1) {
+        ERROR("Failed to open '%s' (%s)\n", fstab->blk_device,
+            strerror(errno));
+        return rc;
+    }
+
+    // read verity metadata
+    if (fec_verity_get_metadata(f, &verity) == -1) {
+        ERROR("Failed to get verity metadata '%s' (%s)\n", fstab->blk_device,
+            strerror(errno));
         goto out;
     }
 
-    if (read_verity_metadata(device_size, fstab->blk_device, &signature, NULL) < 0) {
-        ERROR("Failed to read verity signature from %s\n", fstab->mount_point);
-        goto out;
-    }
-
-    SHA256_hash(signature, RSANUMBYTES, curr);
+    SHA256_hash(verity.signature, RSANUMBYTES, curr);
 
     if (snprintf(tag, sizeof(tag), VERITY_LASTSIG_TAG "_%s",
             basename(fstab->mount_point)) >= (int)sizeof(tag)) {
@@ -766,12 +671,7 @@
     rc = 0;
 
 out:
-    free(signature);
-
-    if (fd != -1) {
-        close(fd);
-    }
-
+    fec_close(f);
     return rc;
 }
 
@@ -884,6 +784,7 @@
 {
     alignas(dm_ioctl) char buffer[DM_BUF_SIZE];
     bool use_state = true;
+    bool use_state_for_device = true;
     char fstab_filename[PROPERTY_VALUE_MAX + sizeof(FSTAB_PREFIX)];
     char *mount_point;
     char propbuf[PROPERTY_VALUE_MAX];
@@ -928,10 +829,12 @@
             continue;
         }
 
+        use_state_for_device = use_state;
+
         if (use_state) {
             if (get_verity_state_offset(&fstab->recs[i], &offset) < 0 ||
                 read_verity_state(fstab->recs[i].verity_loc, offset, &mode) < 0) {
-                continue;
+                use_state_for_device = false;
             }
         }
 
@@ -946,7 +849,7 @@
 
         status = &buffer[io->data_start + sizeof(struct dm_target_spec)];
 
-        if (use_state && *status == 'C') {
+        if (use_state_for_device && *status == 'C') {
             if (write_verity_state(fstab->recs[i].verity_loc, offset,
                     VERITY_MODE_LOGGING) < 0) {
                 continue;
@@ -972,87 +875,105 @@
     return rc;
 }
 
-int fs_mgr_setup_verity(struct fstab_rec *fstab) {
-
+int fs_mgr_setup_verity(struct fstab_rec *fstab)
+{
     int retval = FS_MGR_SETUP_VERITY_FAIL;
     int fd = -1;
-    int mode;
-
-    char *verity_blk_name = 0;
-    char *verity_table = 0;
-    char *verity_table_signature = 0;
-    int verity_table_length = 0;
-    uint64_t device_size = 0;
+    char *invalid_table = NULL;
+    char *verity_blk_name = NULL;
+    struct fec_handle *f = NULL;
+    struct fec_verity_metadata verity;
+    struct verity_table_params params;
 
     alignas(dm_ioctl) char buffer[DM_BUF_SIZE];
     struct dm_ioctl *io = (struct dm_ioctl *) buffer;
     char *mount_point = basename(fstab->mount_point);
 
-    // get verity filesystem size
-    if (get_fs_size(fstab->fs_type, fstab->blk_device, &device_size) < 0) {
+    if (fec_open(&f, fstab->blk_device, O_RDONLY, FEC_VERITY_DISABLE,
+            FEC_DEFAULT_ROOTS) < 0) {
+        ERROR("Failed to open '%s' (%s)\n", fstab->blk_device,
+            strerror(errno));
         return retval;
     }
 
-    // read the verity block at the end of the block device
-    // send error code up the chain so we can detect attempts to disable verity
-    retval = read_verity_metadata(device_size,
-                                  fstab->blk_device,
-                                  &verity_table_signature,
-                                  &verity_table);
-    if (retval < 0) {
+    // read verity metadata
+    if (fec_verity_get_metadata(f, &verity) < 0) {
+        ERROR("Failed to get verity metadata '%s' (%s)\n", fstab->blk_device,
+            strerror(errno));
         goto out;
     }
 
-    retval = FS_MGR_SETUP_VERITY_FAIL;
-    verity_table_length = strlen(verity_table);
+#ifdef ALLOW_ADBD_DISABLE_VERITY
+    if (verity.disabled) {
+        retval = FS_MGR_SETUP_VERITY_DISABLED;
+        INFO("Attempt to cleanly disable verity - only works in USERDEBUG\n");
+        goto out;
+    }
+#endif
+
+    // read ecc metadata
+    if (fec_ecc_get_metadata(f, &params.ecc) < 0) {
+        params.ecc.valid = false;
+    }
+
+    params.ecc_dev = fstab->blk_device;
 
     // get the device mapper fd
     if ((fd = open("/dev/device-mapper", O_RDWR)) < 0) {
-        ERROR("Error opening device mapper (%s)", strerror(errno));
+        ERROR("Error opening device mapper (%s)\n", strerror(errno));
         goto out;
     }
 
     // create the device
     if (create_verity_device(io, mount_point, fd) < 0) {
-        ERROR("Couldn't create verity device!");
+        ERROR("Couldn't create verity device!\n");
         goto out;
     }
 
     // get the name of the device file
     if (get_verity_device_name(io, mount_point, fd, &verity_blk_name) < 0) {
-        ERROR("Couldn't get verity device number!");
+        ERROR("Couldn't get verity device number!\n");
         goto out;
     }
 
-    if (load_verity_state(fstab, &mode) < 0) {
+    if (load_verity_state(fstab, &params.mode) < 0) {
         /* if accessing or updating the state failed, switch to the default
          * safe mode. This makes sure the device won't end up in an endless
          * restart loop, and no corrupted data will be exposed to userspace
          * without a warning. */
-        mode = VERITY_MODE_EIO;
+        params.mode = VERITY_MODE_EIO;
     }
 
     // verify the signature on the table
-    if (verify_table(verity_table_signature,
-                            verity_table,
-                            verity_table_length) < 0) {
-        if (mode == VERITY_MODE_LOGGING) {
+    if (verify_table(verity.signature, verity.table,
+            verity.table_length) < 0) {
+        if (params.mode == VERITY_MODE_LOGGING) {
             // the user has been warned, allow mounting without dm-verity
             retval = FS_MGR_SETUP_VERITY_SUCCESS;
             goto out;
         }
 
         // invalidate root hash and salt to trigger device-specific recovery
-        if (invalidate_table(verity_table, verity_table_length) < 0) {
+        invalid_table = strdup(verity.table);
+
+        if (!invalid_table ||
+                invalidate_table(invalid_table, verity.table_length) < 0) {
             goto out;
         }
+
+        params.table = invalid_table;
+    } else {
+        params.table = verity.table;
     }
 
-    INFO("Enabling dm-verity for %s (mode %d)\n",  mount_point, mode);
+    INFO("Enabling dm-verity for %s (mode %d)\n", mount_point, params.mode);
 
     // load the verity mapping table
-    if (load_verity_table(io, mount_point, device_size, fd, verity_table,
-            mode) < 0) {
+    if (load_verity_table(io, mount_point, verity.data_size, fd, &params,
+            format_verity_table) < 0 &&
+        // try the legacy format for backwards compatibility
+        load_verity_table(io, mount_point, verity.data_size, fd, &params,
+            format_legacy_verity_table) < 0) {
         goto out;
     }
 
@@ -1081,8 +1002,8 @@
         close(fd);
     }
 
-    free(verity_table);
-    free(verity_table_signature);
+    fec_close(f);
+    free(invalid_table);
     free(verity_blk_name);
 
     return retval;
diff --git a/include/binderwrapper/binder_wrapper.h b/include/binderwrapper/binder_wrapper.h
index e57cf83..921c4ed 100644
--- a/include/binderwrapper/binder_wrapper.h
+++ b/include/binderwrapper/binder_wrapper.h
@@ -17,6 +17,8 @@
 #ifndef SYSTEM_CORE_INCLUDE_BINDERWRAPPER_BINDER_WRAPPER_H_
 #define SYSTEM_CORE_INCLUDE_BINDERWRAPPER_BINDER_WRAPPER_H_
 
+#include <sys/types.h>
+
 #include <string>
 
 #include <base/callback.h>
@@ -68,6 +70,10 @@
   // Unregisters the callback, if any, for |binder|.
   virtual bool UnregisterForDeathNotifications(const sp<IBinder>& binder) = 0;
 
+  // When called while in a transaction, returns the caller's UID or PID.
+  virtual uid_t GetCallingUid() = 0;
+  virtual pid_t GetCallingPid() = 0;
+
  private:
   static BinderWrapper* instance_;
 };
diff --git a/include/binderwrapper/stub_binder_wrapper.h b/include/binderwrapper/stub_binder_wrapper.h
index 6e198ae..01c9648 100644
--- a/include/binderwrapper/stub_binder_wrapper.h
+++ b/include/binderwrapper/stub_binder_wrapper.h
@@ -77,6 +77,9 @@
   }
   void clear_local_binders() { local_binders_.clear(); }
 
+  void set_calling_uid(uid_t uid) { calling_uid_ = uid; }
+  void set_calling_pid(pid_t pid) { calling_pid_ = pid; }
+
   // Sets the binder to return when |service_name| is passed to GetService() or
   // WaitForService().
   void SetBinderForService(const std::string& service_name,
@@ -97,6 +100,8 @@
   bool RegisterForDeathNotifications(const sp<IBinder>& binder,
                                      const base::Closure& callback) override;
   bool UnregisterForDeathNotifications(const sp<IBinder>& binder) override;
+  uid_t GetCallingUid() override;
+  pid_t GetCallingPid() override;
 
  private:
   using ServiceMap = std::map<std::string, sp<IBinder>>;
@@ -116,6 +121,10 @@
   // death.
   std::map<sp<IBinder>, base::Closure> death_callbacks_;
 
+  // Values to return from GetCallingUid() and GetCallingPid();
+  uid_t calling_uid_;
+  pid_t calling_pid_;
+
   DISALLOW_COPY_AND_ASSIGN(StubBinderWrapper);
 };
 
diff --git a/include/ziparchive/zip_writer.h b/include/ziparchive/zip_writer.h
new file mode 100644
index 0000000..9ee4abe
--- /dev/null
+++ b/include/ziparchive/zip_writer.h
@@ -0,0 +1,141 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef LIBZIPARCHIVE_ZIPWRITER_H_
+#define LIBZIPARCHIVE_ZIPWRITER_H_
+
+#include "base/macros.h"
+#include <utils/Compat.h>
+
+#include <cstdio>
+#include <string>
+#include <ctime>
+#include <vector>
+
+/**
+ * Writes a Zip file via a stateful interface.
+ *
+ * Example:
+ *
+ *   FILE* file = fopen("path/to/zip.zip", "wb");
+ *
+ *   ZipWriter writer(file);
+ *
+ *   writer.StartEntry("test.txt", ZipWriter::kCompress | ZipWriter::kAlign);
+ *   writer.WriteBytes(buffer, bufferLen);
+ *   writer.WriteBytes(buffer2, bufferLen2);
+ *   writer.FinishEntry();
+ *
+ *   writer.StartEntry("empty.txt", 0);
+ *   writer.FinishEntry();
+ *
+ *   writer.Finish();
+ *
+ *   fclose(file);
+ */
+class ZipWriter {
+public:
+  enum {
+    /**
+     * Flag to compress the zip entry using deflate.
+     */
+    kCompress = 0x01,
+
+    /**
+     * Flag to align the zip entry data on a 32bit boundary. Useful for
+     * mmapping the data at runtime.
+     */
+    kAlign32 = 0x02,
+  };
+
+  static const char* ErrorCodeString(int32_t error_code);
+
+  /**
+   * Create a ZipWriter that will write into a FILE stream. The file should be opened with
+   * open mode of "wb" or "w+b". ZipWriter does not take ownership of the file stream. The
+   * caller is responsible for closing the file.
+   */
+  explicit ZipWriter(FILE* f);
+
+  // Move constructor.
+  ZipWriter(ZipWriter&& zipWriter);
+
+  // Move assignment.
+  ZipWriter& operator=(ZipWriter&& zipWriter);
+
+  /**
+   * Starts a new zip entry with the given path and flags.
+   * Flags can be a bitwise OR of ZipWriter::kCompress and ZipWriter::kAlign.
+   * Subsequent calls to WriteBytes(const void*, size_t) will add data to this entry.
+   * Returns 0 on success, and an error value < 0 on failure.
+   */
+  int32_t StartEntry(const char* path, size_t flags);
+
+  /**
+   * Same as StartEntry(const char*, size_t), but sets a last modified time for the entry.
+   */
+  int32_t StartEntryWithTime(const char* path, size_t flags, time_t time);
+
+  /**
+   * Writes bytes to the zip file for the previously started zip entry.
+   * Returns 0 on success, and an error value < 0 on failure.
+   */
+  int32_t WriteBytes(const void* data, size_t len);
+
+  /**
+   * Finish a zip entry started with StartEntry(const char*, size_t) or
+   * StartEntryWithTime(const char*, size_t, time_t). This must be called before
+   * any new zip entries are started, or before Finish() is called.
+   * Returns 0 on success, and an error value < 0 on failure.
+   */
+  int32_t FinishEntry();
+
+  /**
+   * Writes the Central Directory Headers and flushes the zip file stream.
+   * Returns 0 on success, and an error value < 0 on failure.
+   */
+  int32_t Finish();
+
+private:
+  DISALLOW_COPY_AND_ASSIGN(ZipWriter);
+
+  int32_t HandleError(int32_t error_code);
+
+  struct FileInfo {
+    std::string path;
+    uint16_t compression_method;
+    uint32_t crc32;
+    uint32_t compressed_size;
+    uint32_t uncompressed_size;
+    uint16_t last_mod_time;
+    uint16_t last_mod_date;
+    uint32_t local_file_header_offset;
+  };
+
+  enum class State {
+    kWritingZip,
+    kWritingEntry,
+    kDone,
+    kError,
+  };
+
+  FILE* file_;
+  off64_t current_offset_;
+  State state_;
+  std::vector<FileInfo> files_;
+};
+
+#endif /* LIBZIPARCHIVE_ZIPWRITER_H_ */
diff --git a/init/Android.mk b/init/Android.mk
index c1cdc1a..8e45a7a 100644
--- a/init/Android.mk
+++ b/init/Android.mk
@@ -84,6 +84,8 @@
 LOCAL_STATIC_LIBRARIES := \
     libinit \
     libfs_mgr \
+    libfec \
+    libfec_rs \
     libsquashfs_utils \
     liblogwrap \
     libcutils \
@@ -94,6 +96,7 @@
     libc \
     libselinux \
     libmincrypt \
+    libcrypto_static \
     libc++_static \
     libdl \
     libsparse_static \
diff --git a/init/bootchart.cpp b/init/bootchart.cpp
index a768762..e1e0c48 100644
--- a/init/bootchart.cpp
+++ b/init/bootchart.cpp
@@ -89,7 +89,7 @@
     if (out == NULL) {
         return;
     }
-    fprintf(out, "version = Android init 0.8 " __TIME__  "\n");
+    fprintf(out, "version = Android init 0.8\n");
     fprintf(out, "title = Boot chart for Android (%s)\n", date);
     fprintf(out, "system.uname = %s %s %s %s\n", uts.sysname, uts.release, uts.version, uts.machine);
     fprintf(out, "system.release = %s\n", fingerprint.c_str());
diff --git a/libbinderwrapper/real_binder_wrapper.cc b/libbinderwrapper/real_binder_wrapper.cc
index adff19b..1c51822 100644
--- a/libbinderwrapper/real_binder_wrapper.cc
+++ b/libbinderwrapper/real_binder_wrapper.cc
@@ -19,6 +19,7 @@
 #include <base/logging.h>
 #include <binder/Binder.h>
 #include <binder/IBinder.h>
+#include <binder/IPCThreadState.h>
 #include <binder/IServiceManager.h>
 
 namespace android {
@@ -111,4 +112,12 @@
   return true;
 }
 
+uid_t RealBinderWrapper::GetCallingUid() {
+  return IPCThreadState::self()->getCallingUid();
+}
+
+pid_t RealBinderWrapper::GetCallingPid() {
+  return IPCThreadState::self()->getCallingPid();
+}
+
 }  // namespace android
diff --git a/libbinderwrapper/real_binder_wrapper.h b/libbinderwrapper/real_binder_wrapper.h
index 8e281f2..ea08371 100644
--- a/libbinderwrapper/real_binder_wrapper.h
+++ b/libbinderwrapper/real_binder_wrapper.h
@@ -38,6 +38,8 @@
   bool RegisterForDeathNotifications(const sp<IBinder>& binder,
                                      const base::Closure& callback) override;
   bool UnregisterForDeathNotifications(const sp<IBinder>& binder) override;
+  uid_t GetCallingUid() override;
+  pid_t GetCallingPid() override;
 
  private:
   class DeathRecipient;
diff --git a/libbinderwrapper/stub_binder_wrapper.cc b/libbinderwrapper/stub_binder_wrapper.cc
index 1d24681..87c6ab7 100644
--- a/libbinderwrapper/stub_binder_wrapper.cc
+++ b/libbinderwrapper/stub_binder_wrapper.cc
@@ -22,7 +22,9 @@
 
 namespace android {
 
-StubBinderWrapper::StubBinderWrapper() = default;
+StubBinderWrapper::StubBinderWrapper()
+    : calling_uid_(-1),
+      calling_pid_(-1) {}
 
 StubBinderWrapper::~StubBinderWrapper() = default;
 
@@ -73,4 +75,12 @@
   return true;
 }
 
+uid_t StubBinderWrapper::GetCallingUid() {
+  return calling_uid_;
+}
+
+pid_t StubBinderWrapper::GetCallingPid() {
+  return calling_pid_;
+}
+
 }  // namespace android
diff --git a/libpixelflinger/include/private/pixelflinger/ggl_context.h b/libpixelflinger/include/private/pixelflinger/ggl_context.h
index d43655c..a18b2f7 100644
--- a/libpixelflinger/include/private/pixelflinger/ggl_context.h
+++ b/libpixelflinger/include/private/pixelflinger/ggl_context.h
@@ -234,7 +234,7 @@
 
 // ----------------------------------------------------------------------------
 
-class needs_filter_t;
+struct needs_filter_t;
 struct needs_t {
     inline int match(const needs_filter_t& filter);
     inline bool operator == (const needs_t& rhs) const {
diff --git a/libpixelflinger/trap.cpp b/libpixelflinger/trap.cpp
index 80efeff..ea53625 100644
--- a/libpixelflinger/trap.cpp
+++ b/libpixelflinger/trap.cpp
@@ -563,10 +563,10 @@
     
     c->init_y(c, miny);
     for (int32_t y = miny; y < maxy; y++) {
-        register int32_t ex0 = ey0;
-        register int32_t ex1 = ey1;
-        register int32_t ex2 = ey2;    
-        register int32_t xl, xr;
+        int32_t ex0 = ey0;
+        int32_t ex1 = ey1;
+        int32_t ex2 = ey2;    
+        int32_t xl, xr;
         for (xl=minx ; xl<maxx ; xl++) {
             if (ex0>0 && ex1>0 && ex2>0)
                 break; // all strictly positive
diff --git a/libsparse/simg2img.c b/libsparse/simg2img.c
index 95e9b5b..b9b438e 100644
--- a/libsparse/simg2img.c
+++ b/libsparse/simg2img.c
@@ -40,7 +40,6 @@
 	int in;
 	int out;
 	int i;
-	int ret;
 	struct sparse_file *s;
 
 	if (argc < 3) {
@@ -71,10 +70,12 @@
 			exit(-1);
 		}
 
-		lseek(out, SEEK_SET, 0);
+		if (lseek(out, 0, SEEK_SET) == -1) {
+			perror("lseek failed");
+			exit(EXIT_FAILURE);
+		}
 
-		ret = sparse_file_write(s, out, false, false, false);
-		if (ret < 0) {
+		if (sparse_file_write(s, out, false, false, false) < 0) {
 			fprintf(stderr, "Cannot write output file\n");
 			exit(-1);
 		}
diff --git a/libsparse/sparse_read.c b/libsparse/sparse_read.c
index 9b10293..ec63850 100644
--- a/libsparse/sparse_read.c
+++ b/libsparse/sparse_read.c
@@ -18,6 +18,7 @@
 #define _FILE_OFFSET_BITS 64
 #define _LARGEFILE64_SOURCE 1
 
+#include <inttypes.h>
 #include <fcntl.h>
 #include <stdarg.h>
 #include <stdbool.h>
@@ -233,7 +234,7 @@
 			ret = process_raw_chunk(s, chunk_data_size, fd, offset,
 					chunk_header->chunk_sz, cur_block, crc_ptr);
 			if (ret < 0) {
-				verbose_error(s->verbose, ret, "data block at %lld", offset);
+				verbose_error(s->verbose, ret, "data block at %" PRId64, offset);
 				return ret;
 			}
 			return chunk_header->chunk_sz;
@@ -241,7 +242,7 @@
 			ret = process_fill_chunk(s, chunk_data_size, fd,
 					chunk_header->chunk_sz, cur_block, crc_ptr);
 			if (ret < 0) {
-				verbose_error(s->verbose, ret, "fill block at %lld", offset);
+				verbose_error(s->verbose, ret, "fill block at %" PRId64, offset);
 				return ret;
 			}
 			return chunk_header->chunk_sz;
@@ -250,7 +251,7 @@
 					chunk_header->chunk_sz, cur_block, crc_ptr);
 			if (chunk_data_size != 0) {
 				if (ret < 0) {
-					verbose_error(s->verbose, ret, "skip block at %lld", offset);
+					verbose_error(s->verbose, ret, "skip block at %" PRId64, offset);
 					return ret;
 				}
 			}
@@ -258,13 +259,13 @@
 		case CHUNK_TYPE_CRC32:
 			ret = process_crc32_chunk(fd, chunk_data_size, *crc_ptr);
 			if (ret < 0) {
-				verbose_error(s->verbose, -EINVAL, "crc block at %lld",
+				verbose_error(s->verbose, -EINVAL, "crc block at %" PRId64,
 						offset);
 				return ret;
 			}
 			return 0;
 		default:
-			verbose_error(s->verbose, -EINVAL, "unknown block %04X at %lld",
+			verbose_error(s->verbose, -EINVAL, "unknown block %04X at %" PRId64,
 					chunk_header->chunk_type, offset);
 	}
 
diff --git a/libutils/LinearTransform.cpp b/libutils/LinearTransform.cpp
index b7d28d4..138ce8b 100644
--- a/libutils/LinearTransform.cpp
+++ b/libutils/LinearTransform.cpp
@@ -21,11 +21,24 @@
 
 #include <utils/LinearTransform.h>
 
+// disable sanitize as these functions may intentionally overflow (see comments below).
+// the ifdef can be removed when host builds use clang.
+#if defined(__clang__)
+#define ATTRIBUTE_NO_SANITIZE_INTEGER __attribute__((no_sanitize("integer")))
+#else
+#define ATTRIBUTE_NO_SANITIZE_INTEGER
+#endif
+
 namespace android {
 
-template<class T> static inline T ABS(T x) { return (x < 0) ? -x : x; }
+// sanitize failure with T = int32_t and x = 0x80000000
+template<class T>
+ATTRIBUTE_NO_SANITIZE_INTEGER
+static inline T ABS(T x) { return (x < 0) ? -x : x; }
 
 // Static math methods involving linear transformations
+// remote sanitize failure on overflow case.
+ATTRIBUTE_NO_SANITIZE_INTEGER
 static bool scale_u64_to_u64(
         uint64_t val,
         uint32_t N,
@@ -109,6 +122,8 @@
     return true;
 }
 
+// at least one known sanitize failure (see comment below)
+ATTRIBUTE_NO_SANITIZE_INTEGER
 static bool linear_transform_s64_to_s64(
         int64_t  val,
         int64_t  basis1,
@@ -172,7 +187,7 @@
         // (scaled_signbit XOR res_signbit)
 
         if (is_neg)
-            scaled = -scaled;
+            scaled = -scaled; // known sanitize failure
         res = scaled + basis2;
 
         if ((scaled ^ basis2 ^ INT64_MIN) & (scaled ^ res) & INT64_MIN)
@@ -250,6 +265,8 @@
 template void LinearTransform::reduce<uint64_t>(uint64_t* N, uint64_t* D);
 template void LinearTransform::reduce<uint32_t>(uint32_t* N, uint32_t* D);
 
+// sanitize failure if *N = 0x80000000
+ATTRIBUTE_NO_SANITIZE_INTEGER
 void LinearTransform::reduce(int32_t* N, uint32_t* D) {
     if (N && D && *D) {
         if (*N < 0) {
diff --git a/libziparchive/Android.mk b/libziparchive/Android.mk
index 608ff1c..8ff94d4 100644
--- a/libziparchive/Android.mk
+++ b/libziparchive/Android.mk
@@ -15,7 +15,12 @@
 
 LOCAL_PATH := $(call my-dir)
 
-source_files := zip_archive.cc
+source_files := zip_archive.cc zip_writer.cc
+test_files := zip_archive_test.cc zip_writer_test.cc entry_name_utils_test.cc
+
+# Incorrectly warns when C++11 empty brace {} initializer is used.
+# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61489
+common_cpp_flags := -Wno-missing-field-initializers
 
 include $(CLEAR_VARS)
 LOCAL_CPP_EXTENSION := .cc
@@ -24,7 +29,7 @@
 LOCAL_SHARED_LIBRARIES := libutils libbase
 LOCAL_MODULE:= libziparchive
 LOCAL_CFLAGS := -Werror -Wall
-LOCAL_CPPFLAGS := -Wold-style-cast
+LOCAL_CPPFLAGS := -Wold-style-cast $(common_cpp_flags)
 include $(BUILD_STATIC_LIBRARY)
 
 include $(CLEAR_VARS)
@@ -34,6 +39,8 @@
 LOCAL_MODULE:= libziparchive-host
 LOCAL_CFLAGS := -Werror
 LOCAL_CFLAGS_windows := -mno-ms-bitfields
+LOCAL_CPPFLAGS := $(common_cpp_flags)
+
 LOCAL_MULTILIB := both
 LOCAL_MODULE_HOST_OS := darwin linux windows
 include $(BUILD_HOST_STATIC_LIBRARY)
@@ -45,6 +52,7 @@
 LOCAL_SHARED_LIBRARIES := libz-host liblog libbase
 LOCAL_MODULE:= libziparchive-host
 LOCAL_CFLAGS := -Werror
+LOCAL_CPPFLAGS := $(common_cpp_flags)
 LOCAL_MULTILIB := both
 include $(BUILD_HOST_SHARED_LIBRARY)
 
@@ -53,7 +61,8 @@
 LOCAL_MODULE := ziparchive-tests
 LOCAL_CPP_EXTENSION := .cc
 LOCAL_CFLAGS := -Werror
-LOCAL_SRC_FILES := zip_archive_test.cc entry_name_utils_test.cc
+LOCAL_CPPFLAGS := $(common_cpp_flags)
+LOCAL_SRC_FILES := $(test_files)
 LOCAL_SHARED_LIBRARIES := liblog libbase
 LOCAL_STATIC_LIBRARIES := libziparchive libz libutils
 include $(BUILD_NATIVE_TEST)
@@ -61,10 +70,9 @@
 include $(CLEAR_VARS)
 LOCAL_MODULE := ziparchive-tests-host
 LOCAL_CPP_EXTENSION := .cc
-LOCAL_CFLAGS += \
-    -Werror \
-    -Wno-unnamed-type-template-args
-LOCAL_SRC_FILES := zip_archive_test.cc entry_name_utils_test.cc
+LOCAL_CFLAGS := -Werror
+LOCAL_CPPFLAGS := -Wno-unnamed-type-template-args $(common_cpp_flags)
+LOCAL_SRC_FILES := $(test_files)
 LOCAL_SHARED_LIBRARIES := libziparchive-host liblog libbase
 LOCAL_STATIC_LIBRARIES := \
     libz \
diff --git a/libziparchive/zip_archive.cc b/libziparchive/zip_archive.cc
index 3716343..f1e13a7 100644
--- a/libziparchive/zip_archive.cc
+++ b/libziparchive/zip_archive.cc
@@ -39,6 +39,7 @@
 #include "zlib.h"
 
 #include "entry_name_utils-inl.h"
+#include "zip_archive_common.h"
 #include "ziparchive/zip_archive.h"
 
 using android::base::get_unaligned;
@@ -49,161 +50,6 @@
 #define O_BINARY 0
 #endif
 
-// The "end of central directory" (EOCD) record. Each archive
-// contains exactly once such record which appears at the end of
-// the archive. It contains archive wide information like the
-// number of entries in the archive and the offset to the central
-// directory of the offset.
-struct EocdRecord {
-  static const uint32_t kSignature = 0x06054b50;
-
-  // End of central directory signature, should always be
-  // |kSignature|.
-  uint32_t eocd_signature;
-  // The number of the current "disk", i.e, the "disk" that this
-  // central directory is on.
-  //
-  // This implementation assumes that each archive spans a single
-  // disk only. i.e, that disk_num == 1.
-  uint16_t disk_num;
-  // The disk where the central directory starts.
-  //
-  // This implementation assumes that each archive spans a single
-  // disk only. i.e, that cd_start_disk == 1.
-  uint16_t cd_start_disk;
-  // The number of central directory records on this disk.
-  //
-  // This implementation assumes that each archive spans a single
-  // disk only. i.e, that num_records_on_disk == num_records.
-  uint16_t num_records_on_disk;
-  // The total number of central directory records.
-  uint16_t num_records;
-  // The size of the central directory (in bytes).
-  uint32_t cd_size;
-  // The offset of the start of the central directory, relative
-  // to the start of the file.
-  uint32_t cd_start_offset;
-  // Length of the central directory comment.
-  uint16_t comment_length;
- private:
-  EocdRecord() = default;
-  DISALLOW_COPY_AND_ASSIGN(EocdRecord);
-} __attribute__((packed));
-
-// A structure representing the fixed length fields for a single
-// record in the central directory of the archive. In addition to
-// the fixed length fields listed here, each central directory
-// record contains a variable length "file_name" and "extra_field"
-// whose lengths are given by |file_name_length| and |extra_field_length|
-// respectively.
-struct CentralDirectoryRecord {
-  static const uint32_t kSignature = 0x02014b50;
-
-  // The start of record signature. Must be |kSignature|.
-  uint32_t record_signature;
-  // Tool version. Ignored by this implementation.
-  uint16_t version_made_by;
-  // Tool version. Ignored by this implementation.
-  uint16_t version_needed;
-  // The "general purpose bit flags" for this entry. The only
-  // flag value that we currently check for is the "data descriptor"
-  // flag.
-  uint16_t gpb_flags;
-  // The compression method for this entry, one of |kCompressStored|
-  // and |kCompressDeflated|.
-  uint16_t compression_method;
-  // The file modification time and date for this entry.
-  uint16_t last_mod_time;
-  uint16_t last_mod_date;
-  // The CRC-32 checksum for this entry.
-  uint32_t crc32;
-  // The compressed size (in bytes) of this entry.
-  uint32_t compressed_size;
-  // The uncompressed size (in bytes) of this entry.
-  uint32_t uncompressed_size;
-  // The length of the entry file name in bytes. The file name
-  // will appear immediately after this record.
-  uint16_t file_name_length;
-  // The length of the extra field info (in bytes). This data
-  // will appear immediately after the entry file name.
-  uint16_t extra_field_length;
-  // The length of the entry comment (in bytes). This data will
-  // appear immediately after the extra field.
-  uint16_t comment_length;
-  // The start disk for this entry. Ignored by this implementation).
-  uint16_t file_start_disk;
-  // File attributes. Ignored by this implementation.
-  uint16_t internal_file_attributes;
-  // File attributes. Ignored by this implementation.
-  uint32_t external_file_attributes;
-  // The offset to the local file header for this entry, from the
-  // beginning of this archive.
-  uint32_t local_file_header_offset;
- private:
-  CentralDirectoryRecord() = default;
-  DISALLOW_COPY_AND_ASSIGN(CentralDirectoryRecord);
-} __attribute__((packed));
-
-// The local file header for a given entry. This duplicates information
-// present in the central directory of the archive. It is an error for
-// the information here to be different from the central directory
-// information for a given entry.
-struct LocalFileHeader {
-  static const uint32_t kSignature = 0x04034b50;
-
-  // The local file header signature, must be |kSignature|.
-  uint32_t lfh_signature;
-  // Tool version. Ignored by this implementation.
-  uint16_t version_needed;
-  // The "general purpose bit flags" for this entry. The only
-  // flag value that we currently check for is the "data descriptor"
-  // flag.
-  uint16_t gpb_flags;
-  // The compression method for this entry, one of |kCompressStored|
-  // and |kCompressDeflated|.
-  uint16_t compression_method;
-  // The file modification time and date for this entry.
-  uint16_t last_mod_time;
-  uint16_t last_mod_date;
-  // The CRC-32 checksum for this entry.
-  uint32_t crc32;
-  // The compressed size (in bytes) of this entry.
-  uint32_t compressed_size;
-  // The uncompressed size (in bytes) of this entry.
-  uint32_t uncompressed_size;
-  // The length of the entry file name in bytes. The file name
-  // will appear immediately after this record.
-  uint16_t file_name_length;
-  // The length of the extra field info (in bytes). This data
-  // will appear immediately after the entry file name.
-  uint16_t extra_field_length;
- private:
-  LocalFileHeader() = default;
-  DISALLOW_COPY_AND_ASSIGN(LocalFileHeader);
-} __attribute__((packed));
-
-struct DataDescriptor {
-  // The *optional* data descriptor start signature.
-  static const uint32_t kOptSignature = 0x08074b50;
-
-  // CRC-32 checksum of the entry.
-  uint32_t crc32;
-  // Compressed size of the entry.
-  uint32_t compressed_size;
-  // Uncompressed size of the entry.
-  uint32_t uncompressed_size;
- private:
-  DataDescriptor() = default;
-  DISALLOW_COPY_AND_ASSIGN(DataDescriptor);
-} __attribute__((packed));
-
-
-static const uint32_t kGPBDDFlagMask = 0x0008;         // mask value that signifies that the entry has a DD
-
-// The maximum size of a central directory or a file
-// comment in bytes.
-static const uint32_t kMaxCommentLen = 65535;
-
 // The maximum number of bytes to scan backwards for the EOCD start.
 static const uint32_t kMaxEOCDSearch = kMaxCommentLen + sizeof(EocdRecord);
 
diff --git a/libziparchive/zip_archive_common.h b/libziparchive/zip_archive_common.h
new file mode 100644
index 0000000..7f20d51
--- /dev/null
+++ b/libziparchive/zip_archive_common.h
@@ -0,0 +1,179 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef LIBZIPARCHIVE_ZIPARCHIVECOMMON_H_
+#define LIBZIPARCHIVE_ZIPARCHIVECOMMON_H_
+
+#include "base/macros.h"
+
+#include <inttypes.h>
+
+// The "end of central directory" (EOCD) record. Each archive
+// contains exactly once such record which appears at the end of
+// the archive. It contains archive wide information like the
+// number of entries in the archive and the offset to the central
+// directory of the offset.
+struct EocdRecord {
+  static const uint32_t kSignature = 0x06054b50;
+
+  // End of central directory signature, should always be
+  // |kSignature|.
+  uint32_t eocd_signature;
+  // The number of the current "disk", i.e, the "disk" that this
+  // central directory is on.
+  //
+  // This implementation assumes that each archive spans a single
+  // disk only. i.e, that disk_num == 1.
+  uint16_t disk_num;
+  // The disk where the central directory starts.
+  //
+  // This implementation assumes that each archive spans a single
+  // disk only. i.e, that cd_start_disk == 1.
+  uint16_t cd_start_disk;
+  // The number of central directory records on this disk.
+  //
+  // This implementation assumes that each archive spans a single
+  // disk only. i.e, that num_records_on_disk == num_records.
+  uint16_t num_records_on_disk;
+  // The total number of central directory records.
+  uint16_t num_records;
+  // The size of the central directory (in bytes).
+  uint32_t cd_size;
+  // The offset of the start of the central directory, relative
+  // to the start of the file.
+  uint32_t cd_start_offset;
+  // Length of the central directory comment.
+  uint16_t comment_length;
+ private:
+  EocdRecord() = default;
+  DISALLOW_COPY_AND_ASSIGN(EocdRecord);
+} __attribute__((packed));
+
+// A structure representing the fixed length fields for a single
+// record in the central directory of the archive. In addition to
+// the fixed length fields listed here, each central directory
+// record contains a variable length "file_name" and "extra_field"
+// whose lengths are given by |file_name_length| and |extra_field_length|
+// respectively.
+struct CentralDirectoryRecord {
+  static const uint32_t kSignature = 0x02014b50;
+
+  // The start of record signature. Must be |kSignature|.
+  uint32_t record_signature;
+  // Tool version. Ignored by this implementation.
+  uint16_t version_made_by;
+  // Tool version. Ignored by this implementation.
+  uint16_t version_needed;
+  // The "general purpose bit flags" for this entry. The only
+  // flag value that we currently check for is the "data descriptor"
+  // flag.
+  uint16_t gpb_flags;
+  // The compression method for this entry, one of |kCompressStored|
+  // and |kCompressDeflated|.
+  uint16_t compression_method;
+  // The file modification time and date for this entry.
+  uint16_t last_mod_time;
+  uint16_t last_mod_date;
+  // The CRC-32 checksum for this entry.
+  uint32_t crc32;
+  // The compressed size (in bytes) of this entry.
+  uint32_t compressed_size;
+  // The uncompressed size (in bytes) of this entry.
+  uint32_t uncompressed_size;
+  // The length of the entry file name in bytes. The file name
+  // will appear immediately after this record.
+  uint16_t file_name_length;
+  // The length of the extra field info (in bytes). This data
+  // will appear immediately after the entry file name.
+  uint16_t extra_field_length;
+  // The length of the entry comment (in bytes). This data will
+  // appear immediately after the extra field.
+  uint16_t comment_length;
+  // The start disk for this entry. Ignored by this implementation).
+  uint16_t file_start_disk;
+  // File attributes. Ignored by this implementation.
+  uint16_t internal_file_attributes;
+  // File attributes. Ignored by this implementation.
+  uint32_t external_file_attributes;
+  // The offset to the local file header for this entry, from the
+  // beginning of this archive.
+  uint32_t local_file_header_offset;
+ private:
+  CentralDirectoryRecord() = default;
+  DISALLOW_COPY_AND_ASSIGN(CentralDirectoryRecord);
+} __attribute__((packed));
+
+// The local file header for a given entry. This duplicates information
+// present in the central directory of the archive. It is an error for
+// the information here to be different from the central directory
+// information for a given entry.
+struct LocalFileHeader {
+  static const uint32_t kSignature = 0x04034b50;
+
+  // The local file header signature, must be |kSignature|.
+  uint32_t lfh_signature;
+  // Tool version. Ignored by this implementation.
+  uint16_t version_needed;
+  // The "general purpose bit flags" for this entry. The only
+  // flag value that we currently check for is the "data descriptor"
+  // flag.
+  uint16_t gpb_flags;
+  // The compression method for this entry, one of |kCompressStored|
+  // and |kCompressDeflated|.
+  uint16_t compression_method;
+  // The file modification time and date for this entry.
+  uint16_t last_mod_time;
+  uint16_t last_mod_date;
+  // The CRC-32 checksum for this entry.
+  uint32_t crc32;
+  // The compressed size (in bytes) of this entry.
+  uint32_t compressed_size;
+  // The uncompressed size (in bytes) of this entry.
+  uint32_t uncompressed_size;
+  // The length of the entry file name in bytes. The file name
+  // will appear immediately after this record.
+  uint16_t file_name_length;
+  // The length of the extra field info (in bytes). This data
+  // will appear immediately after the entry file name.
+  uint16_t extra_field_length;
+ private:
+  LocalFileHeader() = default;
+  DISALLOW_COPY_AND_ASSIGN(LocalFileHeader);
+} __attribute__((packed));
+
+struct DataDescriptor {
+  // The *optional* data descriptor start signature.
+  static const uint32_t kOptSignature = 0x08074b50;
+
+  // CRC-32 checksum of the entry.
+  uint32_t crc32;
+  // Compressed size of the entry.
+  uint32_t compressed_size;
+  // Uncompressed size of the entry.
+  uint32_t uncompressed_size;
+ private:
+  DataDescriptor() = default;
+  DISALLOW_COPY_AND_ASSIGN(DataDescriptor);
+} __attribute__((packed));
+
+// mask value that signifies that the entry has a DD
+static const uint32_t kGPBDDFlagMask = 0x0008;
+
+// The maximum size of a central directory or a file
+// comment in bytes.
+static const uint32_t kMaxCommentLen = 65535;
+
+#endif /* LIBZIPARCHIVE_ZIPARCHIVECOMMON_H_ */
diff --git a/libziparchive/zip_writer.cc b/libziparchive/zip_writer.cc
new file mode 100644
index 0000000..de75d1e
--- /dev/null
+++ b/libziparchive/zip_writer.cc
@@ -0,0 +1,262 @@
+/*
+ * 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 "entry_name_utils-inl.h"
+#include "zip_archive_common.h"
+#include "ziparchive/zip_writer.h"
+
+#include <cassert>
+#include <cstdio>
+#include <memory>
+#include <zlib.h>
+
+/* Zip compression methods we support */
+enum {
+  kCompressStored     = 0,        // no compression
+  kCompressDeflated   = 8,        // standard deflate
+};
+
+// No error, operation completed successfully.
+static const int32_t kNoError = 0;
+
+// The ZipWriter is in a bad state.
+static const int32_t kInvalidState = -1;
+
+// There was an IO error while writing to disk.
+static const int32_t kIoError = -2;
+
+// The zip entry name was invalid.
+static const int32_t kInvalidEntryName = -3;
+
+static const char* sErrorCodes[] = {
+    "Invalid state",
+    "IO error",
+    "Invalid entry name",
+};
+
+const char* ZipWriter::ErrorCodeString(int32_t error_code) {
+  if (error_code < 0 && (-error_code) < static_cast<int32_t>(arraysize(sErrorCodes))) {
+    return sErrorCodes[-error_code];
+  }
+  return nullptr;
+}
+
+ZipWriter::ZipWriter(FILE* f) : file_(f), current_offset_(0), state_(State::kWritingZip) {
+}
+
+ZipWriter::ZipWriter(ZipWriter&& writer) : file_(writer.file_),
+                                           current_offset_(writer.current_offset_),
+                                           state_(writer.state_),
+                                           files_(std::move(writer.files_)) {
+  writer.file_ = nullptr;
+  writer.state_ = State::kError;
+}
+
+ZipWriter& ZipWriter::operator=(ZipWriter&& writer) {
+  file_ = writer.file_;
+  current_offset_ = writer.current_offset_;
+  state_ = writer.state_;
+  files_ = std::move(writer.files_);
+  writer.file_ = nullptr;
+  writer.state_ = State::kError;
+  return *this;
+}
+
+int32_t ZipWriter::HandleError(int32_t error_code) {
+  state_ = State::kError;
+  return error_code;
+}
+
+int32_t ZipWriter::StartEntry(const char* path, size_t flags) {
+  return StartEntryWithTime(path, flags, time_t());
+}
+
+static void ExtractTimeAndDate(time_t when, uint16_t* out_time, uint16_t* out_date) {
+  /* round up to an even number of seconds */
+  when = static_cast<time_t>((static_cast<unsigned long>(when) + 1) & (~1));
+
+  struct tm* ptm;
+#if !defined(_WIN32)
+    struct tm tm_result;
+    ptm = localtime_r(&when, &tm_result);
+#else
+    ptm = localtime(&when);
+#endif
+
+  int year = ptm->tm_year;
+  if (year < 80) {
+    year = 80;
+  }
+
+  *out_date = (year - 80) << 9 | (ptm->tm_mon + 1) << 5 | ptm->tm_mday;
+  *out_time = ptm->tm_hour << 11 | ptm->tm_min << 5 | ptm->tm_sec >> 1;
+}
+
+int32_t ZipWriter::StartEntryWithTime(const char* path, size_t flags, time_t time) {
+  if (state_ != State::kWritingZip) {
+    return kInvalidState;
+  }
+
+  FileInfo fileInfo = {};
+  fileInfo.path = std::string(path);
+  fileInfo.local_file_header_offset = current_offset_;
+
+  if (!IsValidEntryName(reinterpret_cast<const uint8_t*>(fileInfo.path.data()),
+                       fileInfo.path.size())) {
+    return kInvalidEntryName;
+  }
+
+  LocalFileHeader header = {};
+  header.lfh_signature = LocalFileHeader::kSignature;
+
+  // Set this flag to denote that a DataDescriptor struct will appear after the data,
+  // containing the crc and size fields.
+  header.gpb_flags |= kGPBDDFlagMask;
+
+  // For now, ignore the ZipWriter::kCompress flag.
+  fileInfo.compression_method = kCompressStored;
+  header.compression_method = fileInfo.compression_method;
+
+  ExtractTimeAndDate(time, &fileInfo.last_mod_time, &fileInfo.last_mod_date);
+  header.last_mod_time = fileInfo.last_mod_time;
+  header.last_mod_date = fileInfo.last_mod_date;
+
+  header.file_name_length = fileInfo.path.size();
+
+  off64_t offset = current_offset_ + sizeof(header) + fileInfo.path.size();
+  if ((flags & ZipWriter::kAlign32) && (offset & 0x03)) {
+    // Pad the extra field so the data will be aligned.
+    uint16_t padding = 4 - (offset % 4);
+    header.extra_field_length = padding;
+    offset += padding;
+  }
+
+  if (fwrite(&header, sizeof(header), 1, file_) != 1) {
+    return HandleError(kIoError);
+  }
+
+  if (fwrite(path, sizeof(*path), fileInfo.path.size(), file_) != fileInfo.path.size()) {
+    return HandleError(kIoError);
+  }
+
+  if (fwrite("\0\0\0", 1, header.extra_field_length, file_) != header.extra_field_length) {
+    return HandleError(kIoError);
+  }
+
+  files_.emplace_back(std::move(fileInfo));
+
+  current_offset_ = offset;
+  state_ = State::kWritingEntry;
+  return kNoError;
+}
+
+int32_t ZipWriter::WriteBytes(const void* data, size_t len) {
+  if (state_ != State::kWritingEntry) {
+    return HandleError(kInvalidState);
+  }
+
+  FileInfo& currentFile = files_.back();
+  if (currentFile.compression_method & kCompressDeflated) {
+    // TODO(adamlesinski): Implement compression using zlib deflate.
+    assert(false);
+  } else {
+    if (fwrite(data, 1, len, file_) != len) {
+      return HandleError(kIoError);
+    }
+    currentFile.crc32 = crc32(currentFile.crc32, reinterpret_cast<const Bytef*>(data), len);
+    currentFile.compressed_size += len;
+    current_offset_ += len;
+  }
+
+  currentFile.uncompressed_size += len;
+  return kNoError;
+}
+
+int32_t ZipWriter::FinishEntry() {
+  if (state_ != State::kWritingEntry) {
+    return kInvalidState;
+  }
+
+  const uint32_t sig = DataDescriptor::kOptSignature;
+  if (fwrite(&sig, sizeof(sig), 1, file_) != 1) {
+    state_ = State::kError;
+    return kIoError;
+  }
+
+  FileInfo& currentFile = files_.back();
+  DataDescriptor dd = {};
+  dd.crc32 = currentFile.crc32;
+  dd.compressed_size = currentFile.compressed_size;
+  dd.uncompressed_size = currentFile.uncompressed_size;
+  if (fwrite(&dd, sizeof(dd), 1, file_) != 1) {
+    return HandleError(kIoError);
+  }
+
+  current_offset_ += sizeof(DataDescriptor::kOptSignature) + sizeof(dd);
+  state_ = State::kWritingZip;
+  return kNoError;
+}
+
+int32_t ZipWriter::Finish() {
+  if (state_ != State::kWritingZip) {
+    return kInvalidState;
+  }
+
+  off64_t startOfCdr = current_offset_;
+  for (FileInfo& file : files_) {
+    CentralDirectoryRecord cdr = {};
+    cdr.record_signature = CentralDirectoryRecord::kSignature;
+    cdr.gpb_flags |= kGPBDDFlagMask;
+    cdr.compression_method = file.compression_method;
+    cdr.last_mod_time = file.last_mod_time;
+    cdr.last_mod_date = file.last_mod_date;
+    cdr.crc32 = file.crc32;
+    cdr.compressed_size = file.compressed_size;
+    cdr.uncompressed_size = file.uncompressed_size;
+    cdr.file_name_length = file.path.size();
+    cdr.local_file_header_offset = file.local_file_header_offset;
+    if (fwrite(&cdr, sizeof(cdr), 1, file_) != 1) {
+      return HandleError(kIoError);
+    }
+
+    if (fwrite(file.path.data(), 1, file.path.size(), file_) != file.path.size()) {
+      return HandleError(kIoError);
+    }
+
+    current_offset_ += sizeof(cdr) + file.path.size();
+  }
+
+  EocdRecord er = {};
+  er.eocd_signature = EocdRecord::kSignature;
+  er.disk_num = 1;
+  er.cd_start_disk = 1;
+  er.num_records_on_disk = files_.size();
+  er.num_records = files_.size();
+  er.cd_size = current_offset_ - startOfCdr;
+  er.cd_start_offset = startOfCdr;
+
+  if (fwrite(&er, sizeof(er), 1, file_) != 1) {
+    return HandleError(kIoError);
+  }
+
+  if (fflush(file_) != 0) {
+    return HandleError(kIoError);
+  }
+
+  current_offset_ += sizeof(er);
+  state_ = State::kDone;
+  return kNoError;
+}
diff --git a/libziparchive/zip_writer_test.cc b/libziparchive/zip_writer_test.cc
new file mode 100644
index 0000000..5269730
--- /dev/null
+++ b/libziparchive/zip_writer_test.cc
@@ -0,0 +1,140 @@
+/*
+ * 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 "ziparchive/zip_archive.h"
+#include "ziparchive/zip_writer.h"
+
+#include <base/test_utils.h>
+#include <gtest/gtest.h>
+#include <memory>
+
+struct zipwriter : public ::testing::Test {
+  TemporaryFile* temp_file_;
+  int fd_;
+  FILE* file_;
+
+  void SetUp() override {
+    temp_file_ = new TemporaryFile();
+    fd_ = temp_file_->fd;
+    file_ = fdopen(fd_, "w");
+    ASSERT_NE(file_, nullptr);
+  }
+
+  void TearDown() override {
+    fclose(file_);
+    delete temp_file_;
+  }
+};
+
+TEST_F(zipwriter, WriteUncompressedZipWithOneFile) {
+  ZipWriter writer(file_);
+
+  const char* expected = "hello";
+
+  ASSERT_EQ(writer.StartEntry("file.txt", 0), 0);
+  ASSERT_EQ(writer.WriteBytes("he", 2), 0);
+  ASSERT_EQ(writer.WriteBytes("llo", 3), 0);
+  ASSERT_EQ(writer.FinishEntry(), 0);
+  ASSERT_EQ(writer.Finish(), 0);
+
+  ASSERT_GE(lseek(fd_, 0, SEEK_SET), 0);
+
+  ZipArchiveHandle handle;
+  ASSERT_EQ(OpenArchiveFd(fd_, "temp", &handle, false), 0);
+
+  ZipEntry data;
+  ASSERT_EQ(FindEntry(handle, ZipString("file.txt"), &data), 0);
+  EXPECT_EQ(data.compressed_length, strlen(expected));
+  EXPECT_EQ(data.uncompressed_length, strlen(expected));
+  EXPECT_EQ(data.method, kCompressStored);
+
+  char buffer[6];
+  EXPECT_EQ(ExtractToMemory(handle, &data, reinterpret_cast<uint8_t*>(&buffer), sizeof(buffer)),
+            0);
+  buffer[5] = 0;
+
+  EXPECT_STREQ(expected, buffer);
+
+  CloseArchive(handle);
+}
+
+TEST_F(zipwriter, WriteUncompressedZipWithMultipleFiles) {
+  ZipWriter writer(file_);
+
+  ASSERT_EQ(writer.StartEntry("file.txt", 0), 0);
+  ASSERT_EQ(writer.WriteBytes("he", 2), 0);
+  ASSERT_EQ(writer.FinishEntry(), 0);
+
+  ASSERT_EQ(writer.StartEntry("file/file.txt", 0), 0);
+  ASSERT_EQ(writer.WriteBytes("llo", 3), 0);
+  ASSERT_EQ(writer.FinishEntry(), 0);
+
+  ASSERT_EQ(writer.StartEntry("file/file2.txt", 0), 0);
+  ASSERT_EQ(writer.FinishEntry(), 0);
+
+  ASSERT_EQ(writer.Finish(), 0);
+
+  ASSERT_GE(lseek(fd_, 0, SEEK_SET), 0);
+
+  ZipArchiveHandle handle;
+  ASSERT_EQ(OpenArchiveFd(fd_, "temp", &handle, false), 0);
+
+  char buffer[4];
+  ZipEntry data;
+
+  ASSERT_EQ(FindEntry(handle, ZipString("file.txt"), &data), 0);
+  EXPECT_EQ(data.method, kCompressStored);
+  EXPECT_EQ(data.compressed_length, 2u);
+  EXPECT_EQ(data.uncompressed_length, 2u);
+  ASSERT_EQ(ExtractToMemory(handle, &data, reinterpret_cast<uint8_t*>(buffer), arraysize(buffer)),
+            0);
+  buffer[2] = 0;
+  EXPECT_STREQ("he", buffer);
+
+  ASSERT_EQ(FindEntry(handle, ZipString("file/file.txt"), &data), 0);
+  EXPECT_EQ(data.method, kCompressStored);
+  EXPECT_EQ(data.compressed_length, 3u);
+  EXPECT_EQ(data.uncompressed_length, 3u);
+  ASSERT_EQ(ExtractToMemory(handle, &data, reinterpret_cast<uint8_t*>(buffer), arraysize(buffer)),
+            0);
+  buffer[3] = 0;
+  EXPECT_STREQ("llo", buffer);
+
+  ASSERT_EQ(FindEntry(handle, ZipString("file/file2.txt"), &data), 0);
+  EXPECT_EQ(data.method, kCompressStored);
+  EXPECT_EQ(data.compressed_length, 0u);
+  EXPECT_EQ(data.uncompressed_length, 0u);
+
+  CloseArchive(handle);
+}
+
+TEST_F(zipwriter, WriteUncompressedZipWithAlignedFile) {
+  ZipWriter writer(file_);
+
+  ASSERT_EQ(writer.StartEntry("align.txt", ZipWriter::kAlign32), 0);
+  ASSERT_EQ(writer.WriteBytes("he", 2), 0);
+  ASSERT_EQ(writer.FinishEntry(), 0);
+  ASSERT_EQ(writer.Finish(), 0);
+
+  ASSERT_GE(lseek(fd_, 0, SEEK_SET), 0);
+
+  ZipArchiveHandle handle;
+  ASSERT_EQ(OpenArchiveFd(fd_, "temp", &handle, false), 0);
+
+  ZipEntry data;
+  ASSERT_EQ(FindEntry(handle, ZipString("align.txt"), &data), 0);
+  EXPECT_EQ(data.offset & 0x03, 0);
+}
diff --git a/metricsd/metrics_daemon.rc b/metricsd/metrics_daemon.rc
index 0e1fcd5..0ee577e 100644
--- a/metricsd/metrics_daemon.rc
+++ b/metricsd/metrics_daemon.rc
@@ -1,4 +1,4 @@
-on boot
+on post-fs-data
     mkdir /data/misc/metrics 0770 system system
 
 service metrics_daemon /system/bin/metrics_daemon --uploader -nodaemon