diff --git a/.gitignore b/.gitignore
index b25c15b..2f836aa 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 *~
+*.pyc
diff --git a/adb/Android.mk b/adb/Android.mk
index 7977009..e2d0bb1 100644
--- a/adb/Android.mk
+++ b/adb/Android.mk
@@ -11,6 +11,9 @@
     adb_host_clang := true
 endif
 
+adb_host_sanitize :=
+adb_target_sanitize :=
+
 adb_version := $(shell git -C $(LOCAL_PATH) rev-parse --short=12 HEAD 2>/dev/null)-android
 
 ADB_COMMON_CFLAGS := \
@@ -19,6 +22,15 @@
     -Wno-missing-field-initializers \
     -DADB_REVISION='"$(adb_version)"' \
 
+# Define windows.h and tchar.h Unicode preprocessor symbols so that
+# CreateFile(), _tfopen(), etc. map to versions that take wchar_t*, breaking the
+# build if you accidentally pass char*. Fix by calling like:
+# CreateFileW(widen(utf8).c_str()).
+ADB_COMMON_windows_CFLAGS := \
+    -DUNICODE=1 -D_UNICODE=1 \
+
+ADB_COMMON_CFLAGS += $(ADB_COMMON_$(HOST_OS)_CFLAGS)
+
 # libadb
 # =========================================================
 
@@ -48,6 +60,11 @@
     $(ADB_COMMON_CFLAGS) \
     -fvisibility=hidden \
 
+LIBADB_linux_CFLAGS := \
+    -std=c++14 \
+
+LIBADB_CFLAGS += $(LIBADB_$(HOST_OS)_CFLAGS)
+
 LIBADB_darwin_SRC_FILES := \
     fdevent.cpp \
     get_my_path_darwin.cpp \
@@ -59,7 +76,6 @@
     usb_linux.cpp \
 
 LIBADB_windows_SRC_FILES := \
-    get_my_path_windows.cpp \
     sysdeps_win32.cpp \
     usb_windows.cpp \
 
@@ -75,6 +91,7 @@
     qemu_tracing.cpp \
     usb_linux_client.cpp \
 
+LOCAL_SANITIZE := $(adb_target_sanitize)
 LOCAL_SHARED_LIBRARIES := libbase
 
 # Even though we're building a static library (and thus there's no link step for
@@ -92,6 +109,7 @@
     $(LIBADB_$(HOST_OS)_SRC_FILES) \
     adb_auth_host.cpp \
 
+LOCAL_SANITIZE := $(adb_host_sanitize)
 LOCAL_SHARED_LIBRARIES := libbase
 
 # Even though we're building a static library (and thus there's no link step for
@@ -109,16 +127,20 @@
 LOCAL_MODULE := adbd_test
 LOCAL_CFLAGS := -DADB_HOST=0 $(LIBADB_CFLAGS)
 LOCAL_SRC_FILES := $(LIBADB_TEST_SRCS)
+LOCAL_SANITIZE := $(adb_target_sanitize)
 LOCAL_STATIC_LIBRARIES := libadbd
 LOCAL_SHARED_LIBRARIES := liblog libbase libcutils
 include $(BUILD_NATIVE_TEST)
 
-ifneq ($(HOST_OS),windows)
+# adb_test
+# =========================================================
+
 include $(CLEAR_VARS)
 LOCAL_CLANG := $(adb_host_clang)
 LOCAL_MODULE := adb_test
 LOCAL_CFLAGS := -DADB_HOST=1 $(LIBADB_CFLAGS)
 LOCAL_SRC_FILES := $(LIBADB_TEST_SRCS) services.cpp
+LOCAL_SANITIZE := $(adb_host_sanitize)
 LOCAL_SHARED_LIBRARIES := liblog libbase
 LOCAL_STATIC_LIBRARIES := \
     libadb \
@@ -133,9 +155,13 @@
     LOCAL_LDLIBS += -framework CoreFoundation -framework IOKit
 endif
 
-include $(BUILD_HOST_NATIVE_TEST)
+ifeq ($(HOST_OS),windows)
+    LOCAL_LDLIBS += -lws2_32 -luserenv
+    LOCAL_STATIC_LIBRARIES += AdbWinApi
 endif
 
+include $(BUILD_HOST_NATIVE_TEST)
+
 # adb device tracker (used by ddms) test tool
 # =========================================================
 
@@ -145,6 +171,7 @@
 LOCAL_MODULE := adb_device_tracker_test
 LOCAL_CFLAGS := -DADB_HOST=1 $(LIBADB_CFLAGS)
 LOCAL_SRC_FILES := test_track_devices.cpp
+LOCAL_SANITIZE := $(adb_host_sanitize)
 LOCAL_SHARED_LIBRARIES := liblog libbase
 LOCAL_STATIC_LIBRARIES := libadb libcrypto_static libcutils
 LOCAL_LDLIBS += -lrt -ldl -lpthread
@@ -166,6 +193,8 @@
 endif
 
 ifeq ($(HOST_OS),windows)
+    # Use wmain instead of main
+    LOCAL_LDFLAGS += -municode
     LOCAL_LDLIBS += -lws2_32 -lgdi32
     EXTRA_STATIC_LIBS := AdbWinApi
 endif
@@ -188,6 +217,7 @@
 LOCAL_MODULE := adb
 LOCAL_MODULE_TAGS := debug
 
+LOCAL_SANITIZE := $(adb_host_sanitize)
 LOCAL_STATIC_LIBRARIES := \
     libadb \
     libbase \
@@ -252,6 +282,7 @@
 LOCAL_UNSTRIPPED_PATH := $(TARGET_ROOT_OUT_SBIN_UNSTRIPPED)
 LOCAL_C_INCLUDES += system/extras/ext4_utils
 
+LOCAL_SANITIZE := $(adb_target_sanitize)
 LOCAL_STATIC_LIBRARIES := \
     libadbd \
     libbase \
diff --git a/adb/__init__.py b/adb/__init__.py
new file mode 100644
index 0000000..6b509c6
--- /dev/null
+++ b/adb/__init__.py
@@ -0,0 +1,17 @@
+#
+# 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.
+#
+from __future__ import absolute_import
+from .device import *  # pylint: disable=wildcard-import
diff --git a/adb/adb.cpp b/adb/adb.cpp
index 2e59634..548ca54 100644
--- a/adb/adb.cpp
+++ b/adb/adb.cpp
@@ -35,12 +35,14 @@
 #include <unordered_map>
 
 #include <base/logging.h>
+#include <base/macros.h>
 #include <base/stringprintf.h>
 #include <base/strings.h>
 
 #include "adb_auth.h"
 #include "adb_io.h"
 #include "adb_listeners.h"
+#include "adb_utils.h"
 #include "transport.h"
 
 #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
@@ -53,8 +55,6 @@
 
 ADB_MUTEX_DEFINE(D_lock);
 
-int HOST = 0;
-
 #if !ADB_HOST
 const char* adb_device_banner = "device";
 static android::base::LogdLogger gLogdLogger;
@@ -69,6 +69,14 @@
 #endif
 }
 
+std::string adb_version() {
+    // Don't change the format of this --- it's parsed by ddmlib.
+    return android::base::StringPrintf("Android Debug Bridge version %d.%d.%d\n"
+                                       "Revision %s\n",
+                                       ADB_VERSION_MAJOR, ADB_VERSION_MINOR, ADB_SERVER_VERSION,
+                                       ADB_REVISION);
+}
+
 void fatal(const char *fmt, ...) {
     va_list ap;
     va_start(ap, fmt);
@@ -174,7 +182,7 @@
     for (const auto& elem : elements) {
         const auto& flag = trace_flags.find(elem);
         if (flag == trace_flags.end()) {
-            D("Unknown trace flag: %s", flag->first.c_str());
+            D("Unknown trace flag: %s\n", flag->first.c_str());
             continue;
         }
 
@@ -190,21 +198,20 @@
 }
 
 void adb_trace_init(char** argv) {
+#if !ADB_HOST
     // Don't open log file if no tracing, since this will block
     // the crypto unmount of /data
-    const std::string trace_setting = get_trace_setting();
-    if (trace_setting.empty()) {
-        return;
-    }
-
-#if !ADB_HOST
-    if (isatty(STDOUT_FILENO) == 0) {
-        start_device_log();
+    if (!get_trace_setting().empty()) {
+        if (isatty(STDOUT_FILENO) == 0) {
+            start_device_log();
+        }
     }
 #endif
 
     setup_trace_mask();
     android::base::InitLogging(argv, AdbLogger);
+
+    D("%s", adb_version().c_str());
 }
 
 apacket* get_apacket(void)
@@ -333,10 +340,10 @@
     D("Calling send_connect \n");
     apacket *cp = get_apacket();
     cp->msg.command = A_CNXN;
-    cp->msg.arg0 = A_VERSION;
-    cp->msg.arg1 = MAX_PAYLOAD;
+    cp->msg.arg0 = t->get_protocol_version();
+    cp->msg.arg1 = t->get_max_payload();
     cp->msg.data_length = fill_connect_data((char *)cp->data,
-                                            sizeof(cp->data));
+                                            MAX_PAYLOAD_V1);
     send_packet(cp, t);
 }
 
@@ -414,7 +421,9 @@
     case A_SYNC:
         if(p->msg.arg0){
             send_packet(p, t);
-            if(HOST) send_connect(t);
+#if ADB_HOST
+            send_connect(t);
+#endif
         } else {
             t->connection_state = kCsOffline;
             handle_offline(t);
@@ -423,20 +432,24 @@
         return;
 
     case A_CNXN: /* CONNECT(version, maxdata, "system-id-string") */
-            /* XXX verify version, etc */
         if(t->connection_state != kCsOffline) {
             t->connection_state = kCsOffline;
             handle_offline(t);
         }
 
+        t->update_version(p->msg.arg0, p->msg.arg1);
         parse_banner(reinterpret_cast<const char*>(p->data), t);
 
-        if (HOST || !auth_required) {
+#if ADB_HOST
+        handle_online(t);
+#else
+        if (!auth_required) {
             handle_online(t);
-            if (!HOST) send_connect(t);
+            send_connect(t);
         } else {
             send_auth_request(t);
         }
+#endif
         break;
 
     case A_AUTH:
@@ -556,9 +569,9 @@
     HANDLE                pipe_read, pipe_write;
     HANDLE                stdout_handle, stderr_handle;
     SECURITY_ATTRIBUTES   sa;
-    STARTUPINFO           startup;
+    STARTUPINFOW          startup;
     PROCESS_INFORMATION   pinfo;
-    char                  program_path[ MAX_PATH ];
+    WCHAR                 program_path[ MAX_PATH ];
     int                   ret;
 
     sa.nLength = sizeof(sa);
@@ -578,8 +591,8 @@
                            FILE_SHARE_READ | FILE_SHARE_WRITE, &sa,
                            OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
     if (nul_read == INVALID_HANDLE_VALUE) {
-        fprintf(stderr, "CreateFileW(nul, GENERIC_READ) failure, error %ld\n",
-                GetLastError());
+        fprintf(stderr, "CreateFileW(nul, GENERIC_READ) failed: %s\n",
+                SystemErrorCodeToString(GetLastError()).c_str());
         return -1;
     }
 
@@ -587,8 +600,8 @@
                             FILE_SHARE_READ | FILE_SHARE_WRITE, &sa,
                             OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
     if (nul_write == INVALID_HANDLE_VALUE) {
-        fprintf(stderr, "CreateFileW(nul, GENERIC_WRITE) failure, error %ld\n",
-                GetLastError());
+        fprintf(stderr, "CreateFileW(nul, GENERIC_WRITE) failed: %s\n",
+                SystemErrorCodeToString(GetLastError()).c_str());
         CloseHandle(nul_read);
         return -1;
     }
@@ -596,7 +609,8 @@
     /* create pipe, and ensure its read handle isn't inheritable */
     ret = CreatePipe( &pipe_read, &pipe_write, &sa, 0 );
     if (!ret) {
-        fprintf(stderr, "CreatePipe() failure, error %ld\n", GetLastError() );
+        fprintf(stderr, "CreatePipe() failed: %s\n",
+                SystemErrorCodeToString(GetLastError()).c_str());
         CloseHandle(nul_read);
         CloseHandle(nul_write);
         return -1;
@@ -627,17 +641,39 @@
     ZeroMemory( &startup, sizeof(startup) );
     startup.cb = sizeof(startup);
     startup.hStdInput  = nul_read;
-    startup.hStdOutput = pipe_write;
+    startup.hStdOutput = nul_write;
     startup.hStdError  = nul_write;
     startup.dwFlags    = STARTF_USESTDHANDLES;
 
     ZeroMemory( &pinfo, sizeof(pinfo) );
 
     /* get path of current program */
-    GetModuleFileName( NULL, program_path, sizeof(program_path) );
-    char args[64];
-    snprintf(args, sizeof(args), "adb -P %d fork-server server",  server_port);
-    ret = CreateProcess(
+    DWORD module_result = GetModuleFileNameW(NULL, program_path,
+                                             arraysize(program_path));
+    if ((module_result == arraysize(program_path)) || (module_result == 0)) {
+        // String truncation or some other error.
+        fprintf(stderr, "GetModuleFileNameW() failed: %s\n",
+                SystemErrorCodeToString(GetLastError()).c_str());
+        return -1;
+    }
+
+    // Verify that the pipe_write handle value can be passed on the command line
+    // as %d and that the rest of adb code can pass it around in an int.
+    const int pipe_write_as_int = cast_handle_to_int(pipe_write);
+    if (cast_int_to_handle(pipe_write_as_int) != pipe_write) {
+        // If this fires, either handle values are larger than 32-bits or else
+        // there is a bug in our casting.
+        // https://msdn.microsoft.com/en-us/library/windows/desktop/aa384203%28v=vs.85%29.aspx
+        fprintf(stderr, "CreatePipe handle value too large: 0x%p\n",
+                pipe_write);
+        return -1;
+    }
+
+    WCHAR args[64];
+    snwprintf(args, arraysize(args),
+              L"adb -P %d fork-server server --reply-fd %d", server_port,
+              pipe_write_as_int);
+    ret = CreateProcessW(
             program_path,                              /* program path  */
             args,
                                     /* the fork-server argument will set the
@@ -656,7 +692,8 @@
     CloseHandle( pipe_write );
 
     if (!ret) {
-        fprintf(stderr, "CreateProcess failure, error %ld\n", GetLastError() );
+        fprintf(stderr, "CreateProcess failed: %s\n",
+                SystemErrorCodeToString(GetLastError()).c_str());
         CloseHandle( pipe_read );
         return -1;
     }
@@ -672,7 +709,8 @@
         ret = ReadFile( pipe_read, temp, 3, &count, NULL );
         CloseHandle( pipe_read );
         if ( !ret ) {
-            fprintf(stderr, "could not read ok from ADB Server, error = %ld\n", GetLastError() );
+            fprintf(stderr, "could not read ok from ADB Server, error: %s\n",
+                    SystemErrorCodeToString(GetLastError()).c_str());
             return -1;
         }
         if (count != 3 || temp[0] != 'O' || temp[1] != 'K' || temp[2] != '\n') {
@@ -685,7 +723,7 @@
     int     fd[2];
 
     // set up a pipe so the child can tell us when it is ready.
-    // fd[0] will be parent's end, and fd[1] will get mapped to stderr in the child.
+    // fd[0] will be parent's end, and the child will write on fd[1]
     if (pipe(fd)) {
         fprintf(stderr, "pipe failed in launch_server, errno: %d\n", errno);
         return -1;
@@ -697,16 +735,14 @@
     if (pid == 0) {
         // child side of the fork
 
-        // redirect stderr to the pipe
-        // we use stderr instead of stdout due to stdout's buffering behavior.
         adb_close(fd[0]);
-        dup2(fd[1], STDERR_FILENO);
-        adb_close(fd[1]);
 
         char str_port[30];
-        snprintf(str_port, sizeof(str_port), "%d",  server_port);
+        snprintf(str_port, sizeof(str_port), "%d", server_port);
+        char reply_fd[30];
+        snprintf(reply_fd, sizeof(reply_fd), "%d", fd[1]);
         // child process
-        int result = execl(path, "adb", "-P", str_port, "fork-server", "server", NULL);
+        int result = execl(path, "adb", "-P", str_port, "fork-server", "server", "--reply-fd", reply_fd, NULL);
         // this should not return
         fprintf(stderr, "OOPS! execl returned %d, errno: %d\n", result, errno);
     } else  {
@@ -769,12 +805,12 @@
         if (android::base::StartsWith(service, "killforward:")) {
             kill_forward = true;
             service += 12;
+        } else {
+            service += 8;   // skip past "forward:"
             if (android::base::StartsWith(service, "norebind:")) {
                 no_rebind = true;
                 service += 9;
             }
-        } else {
-            service += 8;
         }
 
         std::vector<std::string> pieces = android::base::Split(service, ";");
@@ -800,11 +836,13 @@
             return 1;
         }
 
+        std::string error;
         InstallStatus r;
         if (kill_forward) {
             r = remove_listener(pieces[0].c_str(), transport);
         } else {
-            r = install_listener(pieces[0], pieces[1].c_str(), transport, no_rebind);
+            r = install_listener(pieces[0], pieces[1].c_str(), transport,
+                                 no_rebind, &error);
         }
         if (r == INSTALL_STATUS_OK) {
 #if ADB_HOST
@@ -820,10 +858,11 @@
           case INSTALL_STATUS_OK: message = "success (!)"; break;
           case INSTALL_STATUS_INTERNAL_ERROR: message = "internal error"; break;
           case INSTALL_STATUS_CANNOT_BIND:
-            message = android::base::StringPrintf("cannot bind to socket: %s", strerror(errno));
+            message = android::base::StringPrintf("cannot bind to socket: %s",
+                                                  error.c_str());
             break;
           case INSTALL_STATUS_CANNOT_REBIND:
-            message = android::base::StringPrintf("cannot rebind existing socket: %s", strerror(errno));
+            message = android::base::StringPrintf("cannot rebind existing socket");
             break;
           case INSTALL_STATUS_LISTENER_NOT_FOUND:
             message = android::base::StringPrintf("listener '%s' not found", service);
@@ -896,28 +935,28 @@
 
     // remove TCP transport
     if (!strncmp(service, "disconnect:", 11)) {
-        char buffer[4096];
-        memset(buffer, 0, sizeof(buffer));
-        const char* serial = service + 11;
-        if (serial[0] == 0) {
+        const std::string address(service + 11);
+        if (address.empty()) {
             // disconnect from all TCP devices
             unregister_all_tcp_transports();
-        } else {
-            char hostbuf[100];
-            // assume port 5555 if no port is specified
-            if (!strchr(serial, ':')) {
-                snprintf(hostbuf, sizeof(hostbuf) - 1, "%s:5555", serial);
-                serial = hostbuf;
-            }
-            atransport* t = find_transport(serial);
-            if (t) {
-                unregister_transport(t);
-            } else {
-                snprintf(buffer, sizeof(buffer), "No such device %s", serial);
-            }
+            return SendOkay(reply_fd, "disconnected everything");
         }
 
-        return SendOkay(reply_fd, buffer);
+        std::string serial;
+        std::string host;
+        int port = DEFAULT_ADB_LOCAL_TRANSPORT_PORT;
+        std::string error;
+        if (!parse_host_and_port(address, &serial, &host, &port, &error)) {
+            return SendFail(reply_fd, android::base::StringPrintf("couldn't parse '%s': %s",
+                                                                  address.c_str(), error.c_str()));
+        }
+        atransport* t = find_transport(serial.c_str());
+        if (t == nullptr) {
+            return SendFail(reply_fd, android::base::StringPrintf("no such device '%s'",
+                                                                  serial.c_str()));
+        }
+        unregister_transport(t);
+        return SendOkay(reply_fd, android::base::StringPrintf("disconnected %s", address.c_str()));
     }
 
     // returns our value for ADB_SERVER_VERSION
diff --git a/adb/adb.h b/adb/adb.h
index 1be83d7..9ff830e 100644
--- a/adb/adb.h
+++ b/adb/adb.h
@@ -22,10 +22,14 @@
 
 #include <base/macros.h>
 
+#include <string>
+
 #include "adb_trace.h"
 #include "fdevent.h"
 
-#define MAX_PAYLOAD 4096
+constexpr size_t MAX_PAYLOAD_V1 = 4 * 1024;
+constexpr size_t MAX_PAYLOAD_V2 = 256 * 1024;
+constexpr size_t MAX_PAYLOAD = MAX_PAYLOAD_V2;
 
 #define A_SYNC 0x434e5953
 #define A_CNXN 0x4e584e43
@@ -42,6 +46,8 @@
 #define ADB_VERSION_MAJOR 1
 #define ADB_VERSION_MINOR 0
 
+std::string adb_version();
+
 // Increment this when we want to force users to start a new adb server.
 #define ADB_SERVER_VERSION 32
 
@@ -137,6 +143,8 @@
 
         /* A socket is bound to atransport */
     atransport *transport;
+
+    size_t get_max_payload() const;
 };
 
 
@@ -193,6 +201,8 @@
     atransport() {
         auth_fde = {};
         transport_fde = {};
+        protocol_version = A_VERSION;
+        max_payload = MAX_PAYLOAD;
     }
 
     virtual ~atransport() {}
@@ -234,7 +244,14 @@
 
     const char* connection_state_name() const;
 
+    void update_version(int version, size_t payload);
+    int get_protocol_version() const;
+    size_t get_max_payload() const;
+
 private:
+    int protocol_version;
+    size_t max_payload;
+
     DISALLOW_COPY_AND_ASSIGN(atransport);
 };
 
@@ -284,7 +301,7 @@
 
 void get_my_path(char *s, size_t maxLen);
 int launch_server(int server_port);
-int adb_main(int is_daemon, int server_port);
+int adb_main(int is_daemon, int server_port, int ack_reply_fd);
 
 /* initialize a transport object's func pointers and state */
 #if ADB_HOST
@@ -344,8 +361,8 @@
 
 
 void local_init(int port);
-int  local_connect(int  port);
-int  local_connect_arbitrary_ports(int console_port, int adb_port);
+void local_connect(int port);
+int  local_connect_arbitrary_ports(int console_port, int adb_port, std::string* error);
 
 /* usb host/client interface */
 void usb_init();
@@ -364,8 +381,9 @@
 ConnectionState connection_state(atransport *t);
 
 extern const char *adb_device_banner;
-extern int HOST;
+#if !ADB_HOST
 extern int SHELL_EXIT_NOTIFY_FD;
+#endif // !ADB_HOST
 
 #define CHUNK_SIZE (64*1024)
 
diff --git a/adb/adb_auth.cpp b/adb/adb_auth.cpp
index cff26d6..8a6b156 100644
--- a/adb/adb_auth.cpp
+++ b/adb/adb_auth.cpp
@@ -75,7 +75,7 @@
     apacket *p = get_apacket();
     int ret;
 
-    ret = adb_auth_get_userkey(p->data, sizeof(p->data));
+    ret = adb_auth_get_userkey(p->data, MAX_PAYLOAD_V1);
     if (!ret) {
         D("Failed to get user public key\n");
         put_apacket(p);
diff --git a/adb/adb_auth_client.cpp b/adb/adb_auth_client.cpp
index 8e7d38b..be28202 100644
--- a/adb/adb_auth_client.cpp
+++ b/adb/adb_auth_client.cpp
@@ -54,7 +54,7 @@
 static void read_keys(const char *file, struct listnode *list)
 {
     FILE *f;
-    char buf[MAX_PAYLOAD];
+    char buf[MAX_PAYLOAD_V1];
     char *sep;
     int ret;
 
@@ -191,7 +191,7 @@
 
 void adb_auth_confirm_key(unsigned char *key, size_t len, atransport *t)
 {
-    char msg[MAX_PAYLOAD];
+    char msg[MAX_PAYLOAD_V1];
     int ret;
 
     if (!usb_transport) {
@@ -212,7 +212,7 @@
 
     ret = snprintf(msg, sizeof(msg), "PK%s", key);
     if (ret >= (signed)sizeof(msg)) {
-        D("Key too long. ret=%d", ret);
+        D("Key too long. ret=%d\n", ret);
         return;
     }
     D("Sending '%s'\n", msg);
diff --git a/adb/adb_auth_host.cpp b/adb/adb_auth_host.cpp
index e878f8b..e7f82a9 100644
--- a/adb/adb_auth_host.cpp
+++ b/adb/adb_auth_host.cpp
@@ -157,7 +157,7 @@
 {
     RSAPublicKey pkey;
     FILE *outfile = NULL;
-    char path[PATH_MAX], info[MAX_PAYLOAD];
+    char path[PATH_MAX], info[MAX_PAYLOAD_V1];
     uint8_t* encoded = nullptr;
     size_t encoded_length;
     int ret = 0;
@@ -183,7 +183,7 @@
 
 #if defined(OPENSSL_IS_BORINGSSL)
     if (!EVP_EncodedLength(&encoded_length, sizeof(pkey))) {
-        D("Public key too large to base64 encode");
+        D("Public key too large to base64 encode\n");
         goto out;
     }
 #else
@@ -194,7 +194,7 @@
 
     encoded = new uint8_t[encoded_length];
     if (encoded == nullptr) {
-        D("Allocation failure");
+        D("Allocation failure\n");
         goto out;
     }
 
@@ -203,7 +203,7 @@
 
     if (fwrite(encoded, encoded_length, 1, outfile) != 1 ||
         fwrite(info, strlen(info), 1, outfile) != 1) {
-        D("Write error while writing public key");
+        D("Write error while writing public key\n");
         goto out;
     }
 
@@ -301,11 +301,18 @@
     char android_dir[PATH_MAX];
     struct stat buf;
 #ifdef _WIN32
-    char path[PATH_MAX];
+    std::string home_str;
     home = getenv("ANDROID_SDK_HOME");
     if (!home) {
-        SHGetFolderPath(NULL, CSIDL_PROFILE, NULL, 0, path);
-        home = path;
+        WCHAR path[MAX_PATH];
+        const HRESULT hr = SHGetFolderPathW(NULL, CSIDL_PROFILE, NULL, 0, path);
+        if (FAILED(hr)) {
+            D("SHGetFolderPathW failed: %s\n",
+              SystemErrorCodeToString(hr).c_str());
+            return -1;
+        }
+        home_str = narrow(path);
+        home = home_str.c_str();
     }
     format = "%s\\%s";
 #else
@@ -323,7 +330,7 @@
 
     if (stat(android_dir, &buf)) {
         if (adb_mkdir(android_dir, 0750) < 0) {
-            D("Cannot mkdir '%s'", android_dir);
+            D("Cannot mkdir '%s'\n", android_dir);
             return -1;
         }
     }
@@ -339,7 +346,7 @@
 
     ret = get_user_keyfilepath(path, sizeof(path));
     if (ret < 0 || ret >= (signed)sizeof(path)) {
-        D("Error getting user key filename");
+        D("Error getting user key filename\n");
         return 0;
     }
 
@@ -414,7 +421,7 @@
     char path[PATH_MAX];
     int ret = get_user_keyfilepath(path, sizeof(path) - 4);
     if (ret < 0 || ret >= (signed)(sizeof(path) - 4)) {
-        D("Error getting user key filename");
+        D("Error getting user key filename\n");
         return 0;
     }
     strcat(path, ".pub");
diff --git a/adb/adb_client.cpp b/adb/adb_client.cpp
index ef9a586..afff2ef 100644
--- a/adb/adb_client.cpp
+++ b/adb/adb_client.cpp
@@ -33,8 +33,10 @@
 
 #include <base/stringprintf.h>
 #include <base/strings.h>
+#include <cutils/sockets.h>
 
 #include "adb_io.h"
+#include "adb_utils.h"
 
 static TransportType __adb_transport = kTransportAny;
 static const char* __adb_serial = NULL;
@@ -151,14 +153,22 @@
     }
 
     int fd;
+    std::string reason;
     if (__adb_server_name) {
-        fd = socket_network_client(__adb_server_name, __adb_server_port, SOCK_STREAM);
+        fd = network_connect(__adb_server_name, __adb_server_port, SOCK_STREAM, 0, &reason);
+        if (fd == -1) {
+            *error = android::base::StringPrintf("can't connect to %s:%d: %s",
+                                                 __adb_server_name, __adb_server_port,
+                                                 reason.c_str());
+            return -2;
+        }
     } else {
-        fd = socket_loopback_client(__adb_server_port, SOCK_STREAM);
-    }
-    if (fd < 0) {
-        *error = perror_str("cannot connect to daemon");
-        return -2;
+        fd = network_loopback_client(__adb_server_port, SOCK_STREAM, &reason);
+        if (fd == -1) {
+            *error = android::base::StringPrintf("cannot connect to daemon: %s",
+                                                 reason.c_str());
+            return -2;
+        }
     }
 
     if (memcmp(&service[0],"host",4) != 0 && switch_socket_transport(fd, error)) {
@@ -219,8 +229,9 @@
             }
         } else {
             // if fd is -1, then check for "unknown host service",
-            // which would indicate a version of adb that does not support the version command
-            if (*error == "unknown host service") {
+            // which would indicate a version of adb that does not support the
+            // version command, in which case we should fall-through to kill it.
+            if (*error != "unknown host service") {
                 return fd;
             }
         }
@@ -243,7 +254,7 @@
 
     fd = _adb_connect(service, error);
     if (fd == -1) {
-        D("_adb_connect error: %s", error->c_str());
+        D("_adb_connect error: %s\n", error->c_str());
     } else if(fd == -2) {
         fprintf(stderr,"** daemon still not running\n");
     }
@@ -277,8 +288,7 @@
     D("adb_query: %s\n", service.c_str());
     int fd = adb_connect(service, error);
     if (fd < 0) {
-        fprintf(stderr,"error: %s\n", error->c_str());
-        return 0;
+        return false;
     }
 
     result->clear();
diff --git a/adb/adb_io_test.cpp b/adb/adb_io_test.cpp
index 8fd5cbf..f637073 100644
--- a/adb/adb_io_test.cpp
+++ b/adb/adb_io_test.cpp
@@ -28,30 +28,13 @@
 #include <string>
 
 #include "base/file.h"
+#include "base/test_utils.h"
 
-class TemporaryFile {
- public:
-  TemporaryFile() {
-    init("/data/local/tmp");
-    if (fd == -1) {
-      init("/tmp");
-    }
-  }
-
-  ~TemporaryFile() {
-    close(fd);
-    unlink(filename);
-  }
-
-  int fd;
-  char filename[1024];
-
- private:
-  void init(const char* tmp_dir) {
-    snprintf(filename, sizeof(filename), "%s/TemporaryFile-XXXXXX", tmp_dir);
-    fd = mkstemp(filename);
-  }
-};
+// All of these tests fail on Windows because they use the C Runtime open(),
+// but the adb_io APIs expect file descriptors from adb_open(). Also, the
+// android::base file APIs use the C Runtime which uses CR/LF translation by
+// default (changeable with _setmode()), but the adb_io APIs use adb_read()
+// and adb_write() which do no translation.
 
 TEST(io, ReadFdExactly_whole) {
   const char expected[] = "Foobar";
diff --git a/adb/adb_listeners.cpp b/adb/adb_listeners.cpp
index 641b537..1e7ce5d 100644
--- a/adb/adb_listeners.cpp
+++ b/adb/adb_listeners.cpp
@@ -20,6 +20,7 @@
 #include <stdlib.h>
 
 #include <base/stringprintf.h>
+#include <cutils/sockets.h>
 
 #include "sysdeps.h"
 #include "transport.h"
@@ -109,27 +110,30 @@
     free_listener(reinterpret_cast<alistener*>(listener));
 }
 
-static int local_name_to_fd(const char* name) {
+static int local_name_to_fd(const char* name, std::string* error) {
     if (!strncmp("tcp:", name, 4)) {
         int port = atoi(name + 4);
         if (gListenAll > 0) {
-            return socket_inaddr_any_server(port, SOCK_STREAM);
+            return network_inaddr_any_server(port, SOCK_STREAM, error);
         } else {
-            return socket_loopback_server(port, SOCK_STREAM);
+            return network_loopback_server(port, SOCK_STREAM, error);
         }
     }
 #if !defined(_WIN32)  // No Unix-domain sockets on Windows.
     // It's nonsensical to support the "reserved" space on the adb host side
     if (!strncmp(name, "local:", 6)) {
-        return socket_local_server(name + 6, ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM);
+        return network_local_server(name + 6,
+                ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM, error);
     } else if (!strncmp(name, "localabstract:", 14)) {
-        return socket_local_server(name + 14, ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM);
+        return network_local_server(name + 14,
+                ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM, error);
     } else if (!strncmp(name, "localfilesystem:", 16)) {
-        return socket_local_server(name + 16, ANDROID_SOCKET_NAMESPACE_FILESYSTEM, SOCK_STREAM);
+        return network_local_server(name + 16,
+                ANDROID_SOCKET_NAMESPACE_FILESYSTEM, SOCK_STREAM, error);
     }
 
 #endif
-    printf("unknown local portname '%s'\n", name);
+    *error = android::base::StringPrintf("unknown local portname '%s'", name);
     return -1;
 }
 
@@ -142,8 +146,10 @@
             continue;
         }
         //  <device-serial> " " <local-name> " " <remote-name> "\n"
+        // Entries from "adb reverse" have no serial.
         android::base::StringAppendF(&result, "%s %s %s\n",
-                                     l->transport->serial, l->local_name, l->connect_to);
+                                     l->transport->serial ? l->transport->serial : "(reverse)",
+                                     l->local_name, l->connect_to);
     }
     return result;
 }
@@ -175,7 +181,8 @@
 InstallStatus install_listener(const std::string& local_name,
                                   const char *connect_to,
                                   atransport* transport,
-                                  int no_rebind)
+                                  int no_rebind,
+                                  std::string* error)
 {
     for (alistener* l = listener_list.next; l != &listener_list; l = l->next) {
         if (local_name == l->local_name) {
@@ -223,9 +230,9 @@
         goto nomem;
     }
 
-    listener->fd = local_name_to_fd(listener->local_name);
+    listener->fd = local_name_to_fd(listener->local_name, error);
     if (listener->fd < 0) {
-        printf("cannot bind '%s': %s\n", listener->local_name, strerror(errno));
+        printf("cannot bind '%s': %s\n", listener->local_name, error->c_str());
         free(listener->local_name);
         free(listener->connect_to);
         free(listener);
diff --git a/adb/adb_listeners.h b/adb/adb_listeners.h
index 67deb21..fa98eed 100644
--- a/adb/adb_listeners.h
+++ b/adb/adb_listeners.h
@@ -33,7 +33,8 @@
 InstallStatus install_listener(const std::string& local_name,
                                const char* connect_to,
                                atransport* transport,
-                               int no_rebind);
+                               int no_rebind,
+                               std::string* error);
 
 std::string format_listeners();
 
diff --git a/adb/adb_utils.cpp b/adb/adb_utils.cpp
index 604bd57..ca843bd 100644
--- a/adb/adb_utils.cpp
+++ b/adb/adb_utils.cpp
@@ -18,6 +18,7 @@
 
 #include "adb_utils.h"
 
+#include <libgen.h>
 #include <stdlib.h>
 #include <sys/stat.h>
 #include <sys/types.h>
@@ -25,11 +26,15 @@
 
 #include <algorithm>
 
+#include <base/logging.h>
 #include <base/stringprintf.h>
+#include <base/strings.h>
 
 #include "adb_trace.h"
 #include "sysdeps.h"
 
+ADB_MUTEX_DEFINE(dirname_lock);
+
 bool getcwd(std::string* s) {
   char* cwd = getcwd(nullptr, 0);
   if (cwd != nullptr) *s = cwd;
@@ -63,6 +68,89 @@
   return result;
 }
 
+std::string adb_basename(const std::string& path) {
+  size_t base = path.find_last_of(OS_PATH_SEPARATORS);
+  return (base != std::string::npos) ? path.substr(base + 1) : path;
+}
+
+std::string adb_dirname(const std::string& path) {
+  // Copy path because dirname may modify the string passed in.
+  std::string parent_storage(path);
+
+  // Use lock because dirname() may write to a process global and return a
+  // pointer to that. Note that this locking strategy only works if all other
+  // callers to dirname in the process also grab this same lock.
+  adb_mutex_lock(&dirname_lock);
+
+  // Note that if std::string uses copy-on-write strings, &str[0] will cause
+  // the copy to be made, so there is no chance of us accidentally writing to
+  // the storage for 'path'.
+  char* parent = dirname(&parent_storage[0]);
+
+  // In case dirname returned a pointer to a process global, copy that string
+  // before leaving the lock.
+  const std::string result(parent);
+
+  adb_mutex_unlock(&dirname_lock);
+
+  return result;
+}
+
+// Given a relative or absolute filepath, create the parent directory hierarchy
+// as needed. Returns true if the hierarchy is/was setup.
+bool mkdirs(const std::string& path) {
+  // TODO: all the callers do unlink && mkdirs && adb_creat ---
+  // that's probably the operation we should expose.
+
+  // Implementation Notes:
+  //
+  // Pros:
+  // - Uses dirname, so does not need to deal with OS_PATH_SEPARATOR.
+  // - On Windows, uses mingw dirname which accepts '/' and '\\', drive letters
+  //   (C:\foo), UNC paths (\\server\share\dir\dir\file), and Unicode (when
+  //   combined with our adb_mkdir() which takes UTF-8).
+  // - Is optimistic wrt thinking that a deep directory hierarchy will exist.
+  //   So it does as few stat()s as possible before doing mkdir()s.
+  // Cons:
+  // - Recursive, so it uses stack space relative to number of directory
+  //   components.
+
+  const std::string parent(adb_dirname(path));
+
+  if (directory_exists(parent)) {
+    return true;
+  }
+
+  // If dirname returned the same path as what we passed in, don't go recursive.
+  // This can happen on Windows when walking up the directory hierarchy and not
+  // finding anything that already exists (unlike POSIX that will eventually
+  // find . or /).
+  if (parent == path) {
+    errno = ENOENT;
+    return false;
+  }
+
+  // Recursively make parent directories of 'parent'.
+  if (!mkdirs(parent)) {
+    return false;
+  }
+
+  // Now that the parent directory hierarchy of 'parent' has been ensured,
+  // create parent itself.
+  if (adb_mkdir(parent, 0775) == -1) {
+    // Can't just check for errno == EEXIST because it might be a file that
+    // exists.
+    const int saved_errno = errno;
+    if (directory_exists(parent)) {
+      return true;
+    }
+    errno = saved_errno;
+    return false;
+  }
+
+  return true;
+}
+
 void dump_hex(const void* data, size_t byte_count) {
     byte_count = std::min(byte_count, size_t(16));
 
@@ -84,3 +172,56 @@
 
     DR("%s\n", line.c_str());
 }
+
+bool parse_host_and_port(const std::string& address,
+                         std::string* canonical_address,
+                         std::string* host, int* port,
+                         std::string* error) {
+    host->clear();
+
+    bool ipv6 = true;
+    bool saw_port = false;
+    size_t colons = std::count(address.begin(), address.end(), ':');
+    size_t dots = std::count(address.begin(), address.end(), '.');
+    std::string port_str;
+    if (address[0] == '[') {
+      // [::1]:123
+      if (address.rfind("]:") == std::string::npos) {
+        *error = android::base::StringPrintf("bad IPv6 address '%s'", address.c_str());
+        return false;
+      }
+      *host = address.substr(1, (address.find("]:") - 1));
+      port_str = address.substr(address.rfind("]:") + 2);
+      saw_port = true;
+    } else if (dots == 0 && colons >= 2 && colons <= 7) {
+      // ::1
+      *host = address;
+    } else if (colons <= 1) {
+      // 1.2.3.4 or some.accidental.domain.com
+      ipv6 = false;
+      std::vector<std::string> pieces = android::base::Split(address, ":");
+      *host = pieces[0];
+      if (pieces.size() > 1) {
+        port_str = pieces[1];
+        saw_port = true;
+      }
+    }
+
+    if (host->empty()) {
+      *error = android::base::StringPrintf("no host in '%s'", address.c_str());
+      return false;
+    }
+
+    if (saw_port) {
+      if (sscanf(port_str.c_str(), "%d", port) != 1 || *port <= 0 || *port > 65535) {
+        *error = android::base::StringPrintf("bad port number '%s' in '%s'",
+                                             port_str.c_str(), address.c_str());
+        return false;
+      }
+    }
+
+    *canonical_address = android::base::StringPrintf(ipv6 ? "[%s]:%d" : "%s:%d", host->c_str(), *port);
+    LOG(DEBUG) << "parsed " << address << " as " << *host << " and " << *port
+               << " (" << *canonical_address << ")";
+    return true;
+}
diff --git a/adb/adb_utils.h b/adb/adb_utils.h
index 84f7d0c..739efcc 100644
--- a/adb/adb_utils.h
+++ b/adb/adb_utils.h
@@ -22,8 +22,26 @@
 bool getcwd(std::string* cwd);
 bool directory_exists(const std::string& path);
 
+// Like the regular basename and dirname, but thread-safe on all
+// platforms and capable of correctly handling exotic Windows paths.
+std::string adb_basename(const std::string& path);
+std::string adb_dirname(const std::string& path);
+
+bool mkdirs(const std::string& path);
+
 std::string escape_arg(const std::string& s);
 
 void dump_hex(const void* ptr, size_t byte_count);
 
+// Parses 'address' into 'host' and 'port'.
+// If no port is given, takes the default from *port.
+// 'canonical_address' then becomes "host:port" or "[host]:port" as appropriate.
+// Note that no real checking is done that 'host' or 'port' is valid; that's
+// left to getaddrinfo(3).
+// Returns false on failure and sets *error to an appropriate message.
+bool parse_host_and_port(const std::string& address,
+                         std::string* canonical_address,
+                         std::string* host, int* port,
+                         std::string* error);
+
 #endif
diff --git a/adb/adb_utils_test.cpp b/adb/adb_utils_test.cpp
index 052aea5..17c8d0a 100644
--- a/adb/adb_utils_test.cpp
+++ b/adb/adb_utils_test.cpp
@@ -16,12 +16,60 @@
 
 #include "adb_utils.h"
 
+#ifdef _WIN32
+#include <windows.h>
+#include <userenv.h>
+#endif
+
+#include <string>
+
 #include <gtest/gtest.h>
 
+#include <stdlib.h>
+#include <string.h>
+
+#include "sysdeps.h"
+
+#include <base/macros.h>
+#include <base/test_utils.h>
+
+#ifdef _WIN32
+static std::string subdir(const char* parent, const char* child) {
+  std::string str(parent);
+  str += OS_PATH_SEPARATOR;
+  str += child;
+  return str;
+}
+#endif
+
 TEST(adb_utils, directory_exists) {
+#ifdef _WIN32
+  char profiles_dir[MAX_PATH];
+  DWORD cch = arraysize(profiles_dir);
+
+  // On typical Windows 7, returns C:\Users
+  ASSERT_TRUE(GetProfilesDirectoryA(profiles_dir, &cch));
+
+  ASSERT_TRUE(directory_exists(profiles_dir));
+
+  // On modern (English?) Windows, this is a directory symbolic link to
+  // C:\ProgramData. Symbolic links are rare on Windows and the user requires
+  // a special permission (by default granted to Administrative users) to
+  // create symbolic links.
+  ASSERT_FALSE(directory_exists(subdir(profiles_dir, "All Users")));
+
+  // On modern (English?) Windows, this is a directory junction to
+  // C:\Users\Default. Junctions are used throughout user profile directories
+  // for backwards compatibility and they don't require any special permissions
+  // to create.
+  ASSERT_FALSE(directory_exists(subdir(profiles_dir, "Default User")));
+
+  ASSERT_FALSE(directory_exists(subdir(profiles_dir, "does-not-exist")));
+#else
   ASSERT_TRUE(directory_exists("/proc"));
   ASSERT_FALSE(directory_exists("/proc/self")); // Symbolic link.
   ASSERT_FALSE(directory_exists("/proc/does-not-exist"));
+#endif
 }
 
 TEST(adb_utils, escape_arg) {
@@ -50,3 +98,107 @@
   ASSERT_EQ(R"('abc(')", escape_arg("abc("));
   ASSERT_EQ(R"('abc)')", escape_arg("abc)"));
 }
+
+TEST(adb_utils, adb_basename) {
+  EXPECT_EQ("sh", adb_basename("/system/bin/sh"));
+  EXPECT_EQ("sh", adb_basename("sh"));
+}
+
+TEST(adb_utils, parse_host_and_port) {
+  std::string canonical_address;
+  std::string host;
+  int port;
+  std::string error;
+
+  // Name, default port.
+  port = 123;
+  ASSERT_TRUE(parse_host_and_port("www.google.com", &canonical_address, &host, &port, &error));
+  ASSERT_EQ("www.google.com:123", canonical_address);
+  ASSERT_EQ("www.google.com", host);
+  ASSERT_EQ(123, port);
+
+  // Name, explicit port.
+  ASSERT_TRUE(parse_host_and_port("www.google.com:666", &canonical_address, &host, &port, &error));
+  ASSERT_EQ("www.google.com:666", canonical_address);
+  ASSERT_EQ("www.google.com", host);
+  ASSERT_EQ(666, port);
+
+  // IPv4, default port.
+  port = 123;
+  ASSERT_TRUE(parse_host_and_port("1.2.3.4", &canonical_address, &host, &port, &error));
+  ASSERT_EQ("1.2.3.4:123", canonical_address);
+  ASSERT_EQ("1.2.3.4", host);
+  ASSERT_EQ(123, port);
+
+  // IPv4, explicit port.
+  ASSERT_TRUE(parse_host_and_port("1.2.3.4:666", &canonical_address, &host, &port, &error));
+  ASSERT_EQ("1.2.3.4:666", canonical_address);
+  ASSERT_EQ("1.2.3.4", host);
+  ASSERT_EQ(666, port);
+
+  // Simple IPv6, default port.
+  port = 123;
+  ASSERT_TRUE(parse_host_and_port("::1", &canonical_address, &host, &port, &error));
+  ASSERT_EQ("[::1]:123", canonical_address);
+  ASSERT_EQ("::1", host);
+  ASSERT_EQ(123, port);
+
+  // Simple IPv6, explicit port.
+  ASSERT_TRUE(parse_host_and_port("[::1]:666", &canonical_address, &host, &port, &error));
+  ASSERT_EQ("[::1]:666", canonical_address);
+  ASSERT_EQ("::1", host);
+  ASSERT_EQ(666, port);
+
+  // Hairy IPv6, default port.
+  port = 123;
+  ASSERT_TRUE(parse_host_and_port("fe80::200:5aee:feaa:20a2", &canonical_address, &host, &port, &error));
+  ASSERT_EQ("[fe80::200:5aee:feaa:20a2]:123", canonical_address);
+  ASSERT_EQ("fe80::200:5aee:feaa:20a2", host);
+  ASSERT_EQ(123, port);
+
+  // Simple IPv6, explicit port.
+  ASSERT_TRUE(parse_host_and_port("[fe80::200:5aee:feaa:20a2]:666", &canonical_address, &host, &port, &error));
+  ASSERT_EQ("[fe80::200:5aee:feaa:20a2]:666", canonical_address);
+  ASSERT_EQ("fe80::200:5aee:feaa:20a2", host);
+  ASSERT_EQ(666, port);
+
+  // Invalid IPv4.
+  EXPECT_FALSE(parse_host_and_port("1.2.3.4:", &canonical_address, &host, &port, &error));
+  EXPECT_FALSE(parse_host_and_port("1.2.3.4::", &canonical_address, &host, &port, &error));
+  EXPECT_FALSE(parse_host_and_port("1.2.3.4:hello", &canonical_address, &host, &port, &error));
+  EXPECT_FALSE(parse_host_and_port(":123", &canonical_address, &host, &port, &error));
+
+  // Invalid IPv6.
+  EXPECT_FALSE(parse_host_and_port(":1", &canonical_address, &host, &port, &error));
+  EXPECT_FALSE(parse_host_and_port("::::::::1", &canonical_address, &host, &port, &error));
+  EXPECT_FALSE(parse_host_and_port("[::1", &canonical_address, &host, &port, &error));
+  EXPECT_FALSE(parse_host_and_port("[::1]", &canonical_address, &host, &port, &error));
+  EXPECT_FALSE(parse_host_and_port("[::1]:", &canonical_address, &host, &port, &error));
+  EXPECT_FALSE(parse_host_and_port("[::1]::", &canonical_address, &host, &port, &error));
+  EXPECT_FALSE(parse_host_and_port("[::1]:hello", &canonical_address, &host, &port, &error));
+
+  // Invalid ports.
+  EXPECT_FALSE(parse_host_and_port("[::1]:-1", &canonical_address, &host, &port, &error));
+  EXPECT_FALSE(parse_host_and_port("[::1]:0", &canonical_address, &host, &port, &error));
+  EXPECT_FALSE(parse_host_and_port("[::1]:65536", &canonical_address, &host, &port, &error));
+  EXPECT_FALSE(parse_host_and_port("1.2.3.4:-1", &canonical_address, &host, &port, &error));
+  EXPECT_FALSE(parse_host_and_port("1.2.3.4:0", &canonical_address, &host, &port, &error));
+  EXPECT_FALSE(parse_host_and_port("1.2.3.4:65536", &canonical_address, &host, &port, &error));
+}
+
+void test_mkdirs(const std::string basepath) {
+  EXPECT_TRUE(mkdirs(basepath));
+  EXPECT_NE(-1, adb_creat(basepath.c_str(), 0600));
+  EXPECT_FALSE(mkdirs(basepath + "/subdir/"));
+}
+
+TEST(adb_utils, mkdirs) {
+  TemporaryDir td;
+
+  // Absolute paths.
+  test_mkdirs(std::string(td.path) + "/dir/subdir/file");
+
+  // Relative paths.
+  ASSERT_EQ(0, chdir(td.path)) << strerror(errno);
+  test_mkdirs(std::string("relative/subrel/file"));
+}
diff --git a/adb/client/main.cpp b/adb/client/main.cpp
index c018b8a..fca1762 100644
--- a/adb/client/main.cpp
+++ b/adb/client/main.cpp
@@ -82,21 +82,17 @@
 
 static std::string GetLogFilePath() {
     const char log_name[] = "adb.log";
-    char temp_path[MAX_PATH - sizeof(log_name) + 1];
+    WCHAR temp_path[MAX_PATH];
 
     // https://msdn.microsoft.com/en-us/library/windows/desktop/aa364992%28v=vs.85%29.aspx
-    DWORD nchars = GetTempPath(sizeof(temp_path), temp_path);
-    CHECK_LE(nchars, sizeof(temp_path));
-    if (nchars == 0) {
-        // TODO(danalbert): Log the error message from FormatError().
-        // Windows unfortunately has two errnos, errno and GetLastError(), so
-        // I'm not sure what to do about PLOG here. Probably better to just
-        // ignore it and add a simplified version of FormatError() for use in
-        // log messages.
-        LOG(ERROR) << "Error creating log file";
+    DWORD nchars = GetTempPathW(arraysize(temp_path), temp_path);
+    if ((nchars >= arraysize(temp_path)) || (nchars == 0)) {
+        // If string truncation or some other error.
+        fatal("cannot retrieve temporary file path: %s\n",
+              SystemErrorCodeToString(GetLastError()).c_str());
     }
 
-    return std::string(temp_path) + log_name;
+    return narrow(temp_path) + log_name;
 }
 #else
 static const char kNullFileName[] = "/dev/null";
@@ -108,19 +104,28 @@
 
 static void close_stdin() {
     int fd = unix_open(kNullFileName, O_RDONLY);
-    CHECK_NE(fd, -1);
-    dup2(fd, STDIN_FILENO);
+    if (fd == -1) {
+        fatal("cannot open '%s': %s", kNullFileName, strerror(errno));
+    }
+    if (dup2(fd, STDIN_FILENO) == -1) {
+        fatal("cannot redirect stdin: %s", strerror(errno));
+    }
     unix_close(fd);
 }
 
 static void setup_daemon_logging(void) {
-    int fd = unix_open(GetLogFilePath().c_str(), O_WRONLY | O_CREAT | O_APPEND,
+    const std::string log_file_path(GetLogFilePath());
+    int fd = unix_open(log_file_path.c_str(), O_WRONLY | O_CREAT | O_APPEND,
                        0640);
     if (fd == -1) {
-        fd = unix_open(kNullFileName, O_WRONLY);
+        fatal("cannot open '%s': %s", log_file_path.c_str(), strerror(errno));
     }
-    dup2(fd, STDOUT_FILENO);
-    dup2(fd, STDERR_FILENO);
+    if (dup2(fd, STDOUT_FILENO) == -1) {
+        fatal("cannot redirect stdout: %s", strerror(errno));
+    }
+    if (dup2(fd, STDERR_FILENO) == -1) {
+        fatal("cannot redirect stderr: %s", strerror(errno));
+    }
     unix_close(fd);
 
 #ifdef _WIN32
@@ -131,9 +136,7 @@
     fprintf(stderr, "--- adb starting (pid %d) ---\n", getpid());
 }
 
-int adb_main(int is_daemon, int server_port) {
-    HOST = 1;
-
+int adb_main(int is_daemon, int server_port, int ack_reply_fd) {
 #if defined(_WIN32)
     SetConsoleCtrlHandler(ctrlc_handler, TRUE);
 #else
@@ -150,34 +153,34 @@
     local_init(DEFAULT_ADB_LOCAL_TRANSPORT_PORT);
     adb_auth_init();
 
+    std::string error;
     std::string local_name = android::base::StringPrintf("tcp:%d", server_port);
-    if (install_listener(local_name, "*smartsocket*", nullptr, 0)) {
-        LOG(FATAL) << "Could not install *smartsocket* listener";
+    if (install_listener(local_name, "*smartsocket*", nullptr, 0, &error)) {
+        LOG(FATAL) << "Could not install *smartsocket* listener: " << error;
     }
 
+    // Inform our parent that we are up and running.
     if (is_daemon) {
-        // Inform our parent that we are up and running.
+#if defined(_WIN32)
+        const HANDLE ack_reply_handle = cast_int_to_handle(ack_reply_fd);
+        const CHAR ack[] = "OK\n";
+        const DWORD bytes_to_write = arraysize(ack) - 1;
+        DWORD written = 0;
+        if (!WriteFile(ack_reply_handle, ack, bytes_to_write, &written, NULL)) {
+            fatal("adb: cannot write ACK to handle 0x%p: %s", ack_reply_handle,
+                  SystemErrorCodeToString(GetLastError()).c_str());
+        }
+        if (written != bytes_to_write) {
+            fatal("adb: cannot write %lu bytes of ACK: only wrote %lu bytes",
+                  bytes_to_write, written);
+        }
+        CloseHandle(ack_reply_handle);
+#else
         // TODO(danalbert): Can't use SendOkay because we're sending "OK\n", not
         // "OKAY".
-        // TODO(danalbert): Why do we use stdout for Windows? There is a
-        // comment in launch_server() that suggests that non-Windows uses
-        // stderr because it is non-buffered. So perhaps the history is that
-        // stdout was preferred for all platforms, but it was discovered that
-        // non-Windows needed a non-buffered fd, so stderr was used there.
-        // Note that using stderr on unix means that if you do
-        // `ADB_TRACE=all adb start-server`, it will say "ADB server didn't ACK"
-        // and "* failed to start daemon *" because the adb server will write
-        // logging to stderr, obscuring the OK\n output that is sent to stderr.
-#if defined(_WIN32)
-        int reply_fd = STDOUT_FILENO;
-        // Change stdout mode to binary so \n => \r\n translation does not
-        // occur. In a moment stdout will be reopened to the daemon log file
-        // anyway.
-        _setmode(reply_fd, _O_BINARY);
-#else
-        int reply_fd = STDERR_FILENO;
+        android::base::WriteStringToFd("OK\n", ack_reply_fd);
+        unix_close(ack_reply_fd);
 #endif
-        android::base::WriteStringToFd("OK\n", reply_fd);
         close_stdin();
         setup_daemon_logging();
     }
@@ -188,9 +191,34 @@
     return 0;
 }
 
+#ifdef _WIN32
+static bool _argv_is_utf8 = false;
+#endif
+
 int main(int argc, char** argv) {
+#ifdef _WIN32
+    if (!_argv_is_utf8) {
+        fatal("_argv_is_utf8 is not set, suggesting that wmain was not "
+              "called. Did you forget to link with -municode?");
+    }
+#endif
+
     adb_sysdeps_init();
     adb_trace_init(argv);
-    D("Handling commandline()\n");
     return adb_commandline(argc - 1, const_cast<const char**>(argv + 1));
 }
+
+#ifdef _WIN32
+
+extern "C"
+int wmain(int argc, wchar_t **argv) {
+    // Set diagnostic flag to try to detect if the build system was not
+    // configured to call wmain.
+    _argv_is_utf8 = true;
+
+    // Convert args from UTF-16 to UTF-8 and pass that to main().
+    NarrowArgs narrow_args(argc, argv);
+    return main(argc, narrow_args.data());
+}
+
+#endif
diff --git a/adb/commandline.cpp b/adb/commandline.cpp
index 4adac37..0ac3556 100644
--- a/adb/commandline.cpp
+++ b/adb/commandline.cpp
@@ -65,16 +65,9 @@
                                        gProductOutPath.c_str(), OS_PATH_SEPARATOR_STR, extra);
 }
 
-static void version(FILE* out) {
-    fprintf(out, "Android Debug Bridge version %d.%d.%d\nRevision %s\n",
-            ADB_VERSION_MAJOR, ADB_VERSION_MINOR, ADB_SERVER_VERSION, ADB_REVISION);
-}
-
 static void help() {
-    version(stderr);
-
+    fprintf(stderr, "%s\n", adb_version().c_str());
     fprintf(stderr,
-        "\n"
         " -a                            - directs adb to listen on all interfaces for a connection\n"
         " -d                            - directs command to the only connected USB device\n"
         "                                 returns an error if more than one USB device is present.\n"
@@ -302,13 +295,32 @@
     if (buf == nullptr) fatal("couldn't allocate buffer for copy_to_file");
     int len;
     long total = 0;
+#ifdef _WIN32
+    int old_stdin_mode = -1;
+    int old_stdout_mode = -1;
+#endif
 
     D("copy_to_file(%d -> %d)\n", inFd, outFd);
 
     if (inFd == STDIN_FILENO) {
         stdin_raw_init(STDIN_FILENO);
+#ifdef _WIN32
+        old_stdin_mode = _setmode(STDIN_FILENO, _O_BINARY);
+        if (old_stdin_mode == -1) {
+            fatal_errno("could not set stdin to binary");
+        }
+#endif
     }
 
+#ifdef _WIN32
+    if (outFd == STDOUT_FILENO) {
+        old_stdout_mode = _setmode(STDOUT_FILENO, _O_BINARY);
+        if (old_stdout_mode == -1) {
+            fatal_errno("could not set stdout to binary");
+        }
+    }
+#endif
+
     while (true) {
         if (inFd == STDIN_FILENO) {
             len = unix_read(inFd, buf, BUFSIZE);
@@ -338,8 +350,21 @@
 
     if (inFd == STDIN_FILENO) {
         stdin_raw_restore(STDIN_FILENO);
+#ifdef _WIN32
+        if (_setmode(STDIN_FILENO, old_stdin_mode) == -1) {
+            fatal_errno("could not restore stdin mode");
+        }
+#endif
     }
 
+#ifdef _WIN32
+    if (outFd == STDOUT_FILENO) {
+        if (_setmode(STDOUT_FILENO, old_stdout_mode) == -1) {
+            fatal_errno("could not restore stdout mode");
+        }
+    }
+#endif
+
     D("copy_to_file() finished after %lu bytes\n", total);
     free(buf);
 }
@@ -455,8 +480,8 @@
     const uint8_t* ptr = reinterpret_cast<const uint8_t*>(data);
 
     if (show_progress) {
-        char *x = strrchr(service, ':');
-        if(x) service = x + 1;
+        const char* x = strrchr(service, ':');
+        if (x) service = x + 1;
     }
 
     while (sz > 0) {
@@ -724,25 +749,6 @@
     return send_shell_command(transport, serial, cmd);
 }
 
-static int mkdirs(const char *path)
-{
-    int ret;
-    char *x = (char *)path + 1;
-
-    for(;;) {
-        x = adb_dirstart(x);
-        if(x == 0) return 0;
-        *x = 0;
-        ret = adb_mkdir(path, 0775);
-        *x = OS_PATH_SEPARATOR;
-        if((ret < 0) && (errno != EEXIST)) {
-            return ret;
-        }
-        x++;
-    }
-    return 0;
-}
-
 static int backup(int argc, const char** argv) {
     const char* filename = "./backup.ab";
 
@@ -834,25 +840,25 @@
  * Given <hint>, try to construct an absolute path to the
  * ANDROID_PRODUCT_OUT dir.
  */
-static std::string find_product_out_path(const char* hint) {
-    if (hint == NULL || hint[0] == '\0') {
+static std::string find_product_out_path(const std::string& hint) {
+    if (hint.empty()) {
         return "";
     }
 
     // If it's already absolute, don't bother doing any work.
-    if (adb_is_absolute_host_path(hint)) {
+    if (adb_is_absolute_host_path(hint.c_str())) {
         return hint;
     }
 
     // If there are any slashes in it, assume it's a relative path;
     // make it absolute.
-    if (adb_dirstart(hint) != nullptr) {
+    if (hint.find_first_of(OS_PATH_SEPARATORS) != std::string::npos) {
         std::string cwd;
         if (!getcwd(&cwd)) {
             fprintf(stderr, "adb: getcwd failed: %s\n", strerror(errno));
             return "";
         }
-        return android::base::StringPrintf("%s%s%s", cwd.c_str(), OS_PATH_SEPARATOR_STR, hint);
+        return android::base::StringPrintf("%s%c%s", cwd.c_str(), OS_PATH_SEPARATOR, hint.c_str());
     }
 
     // It's a string without any slashes.  Try to do something with it.
@@ -876,7 +882,7 @@
     path += hint;
     if (!directory_exists(path)) {
         fprintf(stderr, "adb: Couldn't find a product dir based on -p %s; "
-                        "\"%s\" doesn't exist\n", hint, path.c_str());
+                        "\"%s\" doesn't exist\n", hint.c_str(), path.c_str());
         return "";
     }
     return path;
@@ -940,6 +946,7 @@
     int is_server = 0;
     int r;
     TransportType transport_type = kTransportAny;
+    int ack_reply_fd = -1;
 
     // If defined, this should be an absolute path to
     // the directory containing all of the various system images
@@ -958,7 +965,7 @@
     const char* server_port_str = getenv("ANDROID_ADB_SERVER_PORT");
     int server_port = DEFAULT_ADB_PORT;
     if (server_port_str && strlen(server_port_str) > 0) {
-        server_port = (int) strtol(server_port_str, NULL, 0);
+        server_port = strtol(server_port_str, nullptr, 0);
         if (server_port <= 0 || server_port > 65535) {
             fprintf(stderr,
                     "adb: Env var ANDROID_ADB_SERVER_PORT must be a positive number less than 65535. Got \"%s\"\n",
@@ -976,8 +983,25 @@
         } else if (!strcmp(argv[0], "fork-server")) {
             /* this is a special flag used only when the ADB client launches the ADB Server */
             is_daemon = 1;
+        } else if (!strcmp(argv[0], "--reply-fd")) {
+            if (argc < 2) return usage();
+            const char* reply_fd_str = argv[1];
+            argc--;
+            argv++;
+            ack_reply_fd = strtol(reply_fd_str, nullptr, 10);
+#ifdef _WIN32
+            const HANDLE ack_reply_handle = cast_int_to_handle(ack_reply_fd);
+            if ((GetStdHandle(STD_INPUT_HANDLE) == ack_reply_handle) ||
+                (GetStdHandle(STD_OUTPUT_HANDLE) == ack_reply_handle) ||
+                (GetStdHandle(STD_ERROR_HANDLE) == ack_reply_handle)) {
+#else
+            if (ack_reply_fd <= 2) { // Disallow stdin, stdout, and stderr.
+#endif
+                fprintf(stderr, "adb: invalid reply fd \"%s\"\n", reply_fd_str);
+                return usage();
+            }
         } else if (!strncmp(argv[0], "-p", 2)) {
-            const char *product = NULL;
+            const char* product = nullptr;
             if (argv[0][2] == '\0') {
                 if (argc < 2) return usage();
                 product = argv[1];
@@ -1053,7 +1077,11 @@
 
     if (is_server) {
         if (no_daemon || is_daemon) {
-            r = adb_main(is_daemon, server_port);
+            if (is_daemon && (ack_reply_fd == -1)) {
+                fprintf(stderr, "reply fd for adb server to client communication not specified.\n");
+                return usage();
+            }
+            r = adb_main(is_daemon, server_port, ack_reply_fd);
         } else {
             r = launch_server(server_port);
         }
@@ -1219,10 +1247,12 @@
             return 0;
         }
     }
+    else if (!strcmp(argv[0], "tcpip") && argc > 1) {
+        return adb_connect_command(android::base::StringPrintf("tcpip:%s", argv[1]));
+    }
     else if (!strcmp(argv[0], "remount") ||
              !strcmp(argv[0], "reboot") ||
              !strcmp(argv[0], "reboot-bootloader") ||
-             !strcmp(argv[0], "tcpip") ||
              !strcmp(argv[0], "usb") ||
              !strcmp(argv[0], "root") ||
              !strcmp(argv[0], "unroot") ||
@@ -1412,7 +1442,7 @@
         return 0;
     }
     else if (!strcmp(argv[0], "version")) {
-        version(stdout);
+        fprintf(stdout, "%s", adb_version().c_str());
         return 0;
     }
 
@@ -1447,22 +1477,11 @@
     return pm_command(transport, serial, argc, argv);
 }
 
-static int delete_file(TransportType transport, const char* serial, char* filename) {
+static int delete_file(TransportType transport, const char* serial, const std::string& filename) {
     std::string cmd = "shell:rm -f " + escape_arg(filename);
     return send_shell_command(transport, serial, cmd);
 }
 
-static const char* get_basename(const char* filename)
-{
-    const char* basename = adb_dirstop(filename);
-    if (basename) {
-        basename++;
-        return basename;
-    } else {
-        return filename;
-    }
-}
-
 static int install_app(TransportType transport, const char* serial, int argc, const char** argv) {
     static const char *const DATA_DEST = "/data/local/tmp/%s";
     static const char *const SD_DEST = "/sdcard/tmp/%s";
@@ -1481,7 +1500,7 @@
     int last_apk = -1;
     for (i = argc - 1; i >= 0; i--) {
         const char* file = argv[i];
-        char* dot = strrchr(file, '.');
+        const char* dot = strrchr(file, '.');
         if (dot && !strcasecmp(dot, ".apk")) {
             if (stat(file, &sb) == -1 || !S_ISREG(sb.st_mode)) {
                 fprintf(stderr, "Invalid APK file: %s\n", file);
@@ -1499,13 +1518,12 @@
     }
 
     const char* apk_file = argv[last_apk];
-    char apk_dest[PATH_MAX];
-    snprintf(apk_dest, sizeof apk_dest, where, get_basename(apk_file));
-    int err = do_sync_push(apk_file, apk_dest, 0 /* no show progress */);
+    std::string apk_dest = android::base::StringPrintf(where, adb_basename(apk_file).c_str());
+    int err = do_sync_push(apk_file, apk_dest.c_str(), 0 /* no show progress */);
     if (err) {
         goto cleanup_apk;
     } else {
-        argv[last_apk] = apk_dest; /* destination name, not source location */
+        argv[last_apk] = apk_dest.c_str(); /* destination name, not source location */
     }
 
     err = pm_command(transport, serial, argc, argv);
@@ -1527,7 +1545,7 @@
     int first_apk = -1;
     for (i = argc - 1; i >= 0; i--) {
         const char* file = argv[i];
-        char* dot = strrchr(file, '.');
+        const char* dot = strrchr(file, '.');
         if (dot && !strcasecmp(dot, ".apk")) {
             if (stat(file, &sb) == -1 || !S_ISREG(sb.st_mode)) {
                 fprintf(stderr, "Invalid APK file: %s\n", file);
@@ -1589,7 +1607,7 @@
 
         std::string cmd = android::base::StringPrintf(
                 "exec:pm install-write -S %" PRIu64 " %d %d_%s -",
-                static_cast<uint64_t>(sb.st_size), session_id, i, get_basename(file));
+                static_cast<uint64_t>(sb.st_size), session_id, i, adb_basename(file).c_str());
 
         int localFd = adb_open(file, O_RDONLY);
         if (localFd < 0) {
diff --git a/adb/console.cpp b/adb/console.cpp
index 0707960..ba5a72b 100644
--- a/adb/console.cpp
+++ b/adb/console.cpp
@@ -18,9 +18,10 @@
 
 #include <stdio.h>
 
-#include "base/file.h"
-#include "base/logging.h"
-#include "base/strings.h"
+#include <base/file.h>
+#include <base/logging.h>
+#include <base/strings.h>
+#include <cutils/sockets.h>
 
 #include "adb.h"
 #include "adb_client.h"
@@ -70,9 +71,11 @@
         return -1;
     }
 
-    int fd = socket_loopback_client(port, SOCK_STREAM);
+    std::string error;
+    int fd = network_loopback_client(port, SOCK_STREAM, &error);
     if (fd == -1) {
-        fprintf(stderr, "error: could not connect to TCP port %d\n", port);
+        fprintf(stderr, "error: could not connect to TCP port %d: %s\n", port,
+                error.c_str());
         return -1;
     }
     return fd;
diff --git a/adb/daemon/main.cpp b/adb/daemon/main.cpp
index 157c97b..dc89639 100644
--- a/adb/daemon/main.cpp
+++ b/adb/daemon/main.cpp
@@ -68,13 +68,6 @@
 #if defined(ALLOW_ADBD_ROOT)
     char value[PROPERTY_VALUE_MAX];
 
-    // The emulator is never secure, so don't drop privileges there.
-    // TODO: this seems like a bug --- shouldn't the emulator behave like a device?
-    property_get("ro.kernel.qemu", value, "");
-    if (strcmp(value, "1") == 0) {
-        return false;
-    }
-
     // The properties that affect `adb root` and `adb unroot` are ro.secure and
     // ro.debuggable. In this context the names don't make the expected behavior
     // particularly obvious.
@@ -177,10 +170,13 @@
                 LOG(FATAL) << "Could not set selinux context";
             }
         }
+        std::string error;
         std::string local_name =
             android::base::StringPrintf("tcp:%d", server_port);
-        if (install_listener(local_name, "*smartsocket*", nullptr, 0)) {
-            LOG(FATAL) << "Could not install *smartsocket* listener";
+        if (install_listener(local_name, "*smartsocket*", nullptr, 0,
+                             &error)) {
+            LOG(FATAL) << "Could not install *smartsocket* listener: "
+                << error;
         }
     }
 
diff --git a/adb/device.py b/adb/device.py
new file mode 100644
index 0000000..bc1364b
--- /dev/null
+++ b/adb/device.py
@@ -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.
+#
+import logging
+import os
+import re
+import subprocess
+
+
+class FindDeviceError(RuntimeError):
+    pass
+
+
+class DeviceNotFoundError(FindDeviceError):
+    def __init__(self, serial):
+        self.serial = serial
+        super(DeviceNotFoundError, self).__init__(
+            'No device with serial {}'.format(serial))
+
+
+class NoUniqueDeviceError(FindDeviceError):
+    def __init__(self):
+        super(NoUniqueDeviceError, self).__init__('No unique device')
+
+
+def get_devices():
+    with open(os.devnull, 'wb') as devnull:
+        subprocess.check_call(['adb', 'start-server'], stdout=devnull,
+                              stderr=devnull)
+    out = subprocess.check_output(['adb', 'devices']).splitlines()
+
+    # The first line of `adb devices` just says "List of attached devices", so
+    # skip that.
+    devices = []
+    for line in out[1:]:
+        if not line.strip():
+            continue
+        if 'offline' in line:
+            continue
+
+        serial, _ = re.split(r'\s+', line, maxsplit=1)
+        devices.append(serial)
+    return devices
+
+
+def _get_unique_device(product=None):
+    devices = get_devices()
+    if len(devices) != 1:
+        raise NoUniqueDeviceError()
+    return AndroidDevice(devices[0], product)
+
+
+def _get_device_by_serial(serial, product=None):
+    for device in get_devices():
+        if device == serial:
+            return AndroidDevice(serial, product)
+    raise DeviceNotFoundError(serial)
+
+
+def get_device(serial=None, product=None):
+    """Get a uniquely identified AndroidDevice if one is available.
+
+    Raises:
+        DeviceNotFoundError:
+            The serial specified by `serial` or $ANDROID_SERIAL is not
+            connected.
+
+        NoUniqueDeviceError:
+            Neither `serial` nor $ANDROID_SERIAL was set, and the number of
+            devices connected to the system is not 1. Having 0 connected
+            devices will also result in this error.
+
+    Returns:
+        An AndroidDevice associated with the first non-None identifier in the
+        following order of preference:
+
+        1) The `serial` argument.
+        2) The environment variable $ANDROID_SERIAL.
+        3) The single device connnected to the system.
+    """
+    if serial is not None:
+        return _get_device_by_serial(serial, product)
+
+    android_serial = os.getenv('ANDROID_SERIAL')
+    if android_serial is not None:
+        return _get_device_by_serial(android_serial, product)
+
+    return _get_unique_device(product)
+
+
+class AndroidDevice(object):
+    # Delimiter string to indicate the start of the exit code.
+    _RETURN_CODE_DELIMITER = 'x'
+
+    # Follow any shell command with this string to get the exit
+    # status of a program since this isn't propagated by adb.
+    #
+    # The delimiter is needed because `printf 1; echo $?` would print
+    # "10", and we wouldn't be able to distinguish the exit code.
+    _RETURN_CODE_PROBE_STRING = 'echo "{0}$?"'.format(_RETURN_CODE_DELIMITER)
+
+    # Maximum search distance from the output end to find the delimiter.
+    _RETURN_CODE_SEARCH_LENGTH = len('{0}255\n'.format(_RETURN_CODE_DELIMITER))
+
+    def __init__(self, serial, product=None):
+        self.serial = serial
+        self.product = product
+        self.adb_cmd = ['adb']
+        if self.serial is not None:
+            self.adb_cmd.extend(['-s', serial])
+        if self.product is not None:
+            self.adb_cmd.extend(['-p', product])
+        self._linesep = None
+
+    @property
+    def linesep(self):
+        if self._linesep is None:
+            self._linesep = subprocess.check_output(self.adb_cmd +
+                                                    ['shell', 'echo'])
+        return self._linesep
+
+    def _make_shell_cmd(self, user_cmd):
+        return (self.adb_cmd + ['shell'] + user_cmd +
+                ['; ' + self._RETURN_CODE_PROBE_STRING])
+
+    def _parse_shell_output(self, out):
+        """Finds the exit code string from shell output.
+
+        Args:
+            out: Shell output string.
+
+        Returns:
+            An (exit_code, output_string) tuple. The output string is
+            cleaned of any additional stuff we appended to find the
+            exit code.
+
+        Raises:
+            RuntimeError: Could not find the exit code in |out|.
+        """
+        search_text = out
+        if len(search_text) > self._RETURN_CODE_SEARCH_LENGTH:
+            # We don't want to search over massive amounts of data when we know
+            # the part we want is right at the end.
+            search_text = search_text[-self._RETURN_CODE_SEARCH_LENGTH:]
+        partition = search_text.rpartition(self._RETURN_CODE_DELIMITER)
+        if partition[1] == '':
+            raise RuntimeError('Could not find exit status in shell output.')
+        result = int(partition[2])
+        # partition[0] won't contain the full text if search_text was truncated,
+        # pull from the original string instead.
+        out = out[:-len(partition[1]) - len(partition[2])]
+        return result, out
+
+    def _simple_call(self, cmd):
+        logging.info(' '.join(self.adb_cmd + cmd))
+        return subprocess.check_output(
+            self.adb_cmd + cmd, stderr=subprocess.STDOUT)
+
+    def shell(self, cmd):
+        logging.info(' '.join(self.adb_cmd + ['shell'] + cmd))
+        cmd = self._make_shell_cmd(cmd)
+        out = subprocess.check_output(cmd)
+        rc, out = self._parse_shell_output(out)
+        if rc != 0:
+            error = subprocess.CalledProcessError(rc, cmd)
+            error.out = out
+            raise error
+        return out
+
+    def shell_nocheck(self, cmd):
+        cmd = self._make_shell_cmd(cmd)
+        logging.info(' '.join(cmd))
+        p = subprocess.Popen(
+            cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+        out, _ = p.communicate()
+        return self._parse_shell_output(out)
+
+    def install(self, filename, replace=False):
+        cmd = ['install']
+        if replace:
+            cmd.append('-r')
+        cmd.append(filename)
+        return self._simple_call(cmd)
+
+    def push(self, local, remote):
+        return self._simple_call(['push', local, remote])
+
+    def pull(self, remote, local):
+        return self._simple_call(['pull', remote, local])
+
+    def sync(self, directory=None):
+        cmd = ['sync']
+        if directory is not None:
+            cmd.append(directory)
+        return self._simple_call(cmd)
+
+    def forward(self, local, remote):
+        return self._simple_call(['forward', local, remote])
+
+    def tcpip(self, port):
+        return self._simple_call(['tcpip', port])
+
+    def usb(self):
+        return self._simple_call(['usb'])
+
+    def reboot(self):
+        return self._simple_call(['reboot'])
+
+    def root(self):
+        return self._simple_call(['root'])
+
+    def unroot(self):
+        return self._simple_call(['unroot'])
+
+    def forward_remove(self, local):
+        return self._simple_call(['forward', '--remove', local])
+
+    def forward_remove_all(self):
+        return self._simple_call(['forward', '--remove-all'])
+
+    def connect(self, host):
+        return self._simple_call(['connect', host])
+
+    def disconnect(self, host):
+        return self._simple_call(['disconnect', host])
+
+    def reverse(self, remote, local):
+        return self._simple_call(['reverse', remote, local])
+
+    def reverse_remove_all(self):
+        return self._simple_call(['reverse', '--remove-all'])
+
+    def reverse_remove(self, remote):
+        return self._simple_call(['reverse', '--remove', remote])
+
+    def wait(self):
+        return self._simple_call(['wait-for-device'])
+
+    def get_prop(self, prop_name):
+        output = self.shell(['getprop', prop_name]).splitlines()
+        if len(output) != 1:
+            raise RuntimeError('Too many lines in getprop output:\n' +
+                               '\n'.join(output))
+        value = output[0]
+        if not value.strip():
+            return None
+        return value
+
+    def set_prop(self, prop_name, value):
+        self.shell(['setprop', prop_name, value])
diff --git a/adb/fdevent.cpp b/adb/fdevent.cpp
index 0c43c5e..a8abade 100644
--- a/adb/fdevent.cpp
+++ b/adb/fdevent.cpp
@@ -42,7 +42,9 @@
 // This socket is used when a subproc shell service exists.
 // It wakes up the fdevent_loop() and cause the correct handling
 // of the shell's pseudo-tty master. I.e. force close it.
+#if !ADB_HOST
 int SHELL_EXIT_NOTIFY_FD = -1;
+#endif // !ADB_HOST
 
 static void fatal(const char *fn, const char *fmt, ...)
 {
@@ -81,7 +83,6 @@
 static void fdevent_plist_enqueue(fdevent *node);
 static void fdevent_plist_remove(fdevent *node);
 static fdevent *fdevent_plist_dequeue(void);
-static void fdevent_subproc_event_func(int fd, unsigned events, void *userdata);
 
 static fdevent list_pending = {
     .next = &list_pending,
@@ -233,7 +234,7 @@
 
 #else /* USE_SELECT */
 
-#ifdef HAVE_WINSOCK
+#if defined(_WIN32)
 #include <winsock2.h>
 #else
 #include <sys/select.h>
@@ -510,6 +511,7 @@
     fde->func(fde->fd, events, fde->arg);
 }
 
+#if !ADB_HOST
 static void fdevent_subproc_event_func(int fd, unsigned ev,
                                        void* /* userdata */)
 {
@@ -569,6 +571,24 @@
     }
 }
 
+void fdevent_subproc_setup()
+{
+    int s[2];
+
+    if(adb_socketpair(s)) {
+        FATAL("cannot create shell-exit socket-pair\n");
+    }
+    D("socketpair: (%d,%d)\n", s[0], s[1]);
+
+    SHELL_EXIT_NOTIFY_FD = s[0];
+    fdevent *fde;
+    fde = fdevent_create(s[1], fdevent_subproc_event_func, NULL);
+    if(!fde)
+      FATAL("cannot create fdevent for shell-exit handler\n");
+    fdevent_add(fde, FDE_READ);
+}
+#endif // !ADB_HOST
+
 fdevent *fdevent_create(int fd, fd_func func, void *arg)
 {
     fdevent *fde = (fdevent*) malloc(sizeof(fdevent));
@@ -597,7 +617,7 @@
     fde->func = func;
     fde->arg = arg;
 
-#ifndef HAVE_WINSOCK
+#if !defined(_WIN32)
     fcntl(fd, F_SETFL, O_NONBLOCK);
 #endif
     fdevent_register(fde);
@@ -661,27 +681,12 @@
         fde, (fde->state & FDE_EVENTMASK) & (~(events & FDE_EVENTMASK)));
 }
 
-void fdevent_subproc_setup()
-{
-    int s[2];
-
-    if(adb_socketpair(s)) {
-        FATAL("cannot create shell-exit socket-pair\n");
-    }
-    D("socketpair: (%d,%d)", s[0], s[1]);
-
-    SHELL_EXIT_NOTIFY_FD = s[0];
-    fdevent *fde;
-    fde = fdevent_create(s[1], fdevent_subproc_event_func, NULL);
-    if(!fde)
-      FATAL("cannot create fdevent for shell-exit handler\n");
-    fdevent_add(fde, FDE_READ);
-}
-
 void fdevent_loop()
 {
     fdevent *fde;
+#if !ADB_HOST
     fdevent_subproc_setup();
+#endif // !ADB_HOST
 
     for(;;) {
         D("--- ---- waiting for events\n");
diff --git a/adb/file_sync_client.cpp b/adb/file_sync_client.cpp
index 1dc711ae..da80013 100644
--- a/adb/file_sync_client.cpp
+++ b/adb/file_sync_client.cpp
@@ -32,8 +32,11 @@
 #include "adb.h"
 #include "adb_client.h"
 #include "adb_io.h"
+#include "adb_utils.h"
 #include "file_sync_service.h"
 
+#include <base/stringprintf.h>
+
 static unsigned long long total_bytes;
 static long long start_time;
 
@@ -91,36 +94,30 @@
 typedef void (*sync_ls_cb)(unsigned mode, unsigned size, unsigned time, const char *name, void *cookie);
 
 static int sync_ls(int fd, const char* path, sync_ls_cb func, void* cookie) {
+    int len = strlen(path);
+    if (len > 1024) goto fail;
+
     syncmsg msg;
-    char buf[257];
-    int len;
-
-    len = strlen(path);
-    if(len > 1024) goto fail;
-
     msg.req.id = ID_LIST;
     msg.req.namelen = htoll(len);
 
-    if(!WriteFdExactly(fd, &msg.req, sizeof(msg.req)) ||
-       !WriteFdExactly(fd, path, len)) {
+    if (!WriteFdExactly(fd, &msg.req, sizeof(msg.req)) || !WriteFdExactly(fd, path, len)) {
         goto fail;
     }
 
-    for(;;) {
-        if(!ReadFdExactly(fd, &msg.dent, sizeof(msg.dent))) break;
-        if(msg.dent.id == ID_DONE) return 0;
-        if(msg.dent.id != ID_DENT) break;
+    for (;;) {
+        if (!ReadFdExactly(fd, &msg.dent, sizeof(msg.dent))) break;
+        if (msg.dent.id == ID_DONE) return 0;
+        if (msg.dent.id != ID_DENT) break;
 
         len = ltohl(msg.dent.namelen);
-        if(len > 256) break;
+        if (len > 256) break;
 
-        if(!ReadFdExactly(fd, buf, len)) break;
+        char buf[257];
+        if (!ReadFdExactly(fd, buf, len)) break;
         buf[len] = 0;
 
-        func(ltohl(msg.dent.mode),
-             ltohl(msg.dent.size),
-             ltohl(msg.dent.time),
-             buf, cookie);
+        func(ltohl(msg.dent.mode), ltohl(msg.dent.size), ltohl(msg.dent.time), buf, cookie);
     }
 
 fail:
@@ -219,7 +216,7 @@
     return 0;
 }
 
-static int write_data_file(int fd, const char *path, syncsendbuf *sbuf, int show_progress)
+static int write_data_file(int fd, const char *path, syncsendbuf *sbuf, bool show_progress)
 {
     int lfd, err = 0;
     unsigned long long size = 0;
@@ -273,7 +270,7 @@
 }
 
 static int write_data_buffer(int fd, char* file_buffer, int size, syncsendbuf *sbuf,
-                             int show_progress)
+                             bool show_progress)
 {
     int err = 0;
     int total = 0;
@@ -307,10 +304,8 @@
 #else
 static int write_data_link(int fd, const char *path, syncsendbuf *sbuf)
 {
-    int len, ret;
-
-    len = readlink(path, sbuf->data, SYNC_DATA_MAX-1);
-    if(len < 0) {
+    int len = readlink(path, sbuf->data, SYNC_DATA_MAX-1);
+    if (len < 0) {
         fprintf(stderr, "error reading link '%s': %s\n", path, strerror(errno));
         return -1;
     }
@@ -319,9 +314,9 @@
     sbuf->size = htoll(len + 1);
     sbuf->id = ID_DATA;
 
-    ret = !WriteFdExactly(fd, sbuf, sizeof(unsigned) * 2 + len + 1);
-    if(ret)
+    if (!WriteFdExactly(fd, sbuf, sizeof(unsigned) * 2 + len + 1)) {
         return -1;
+    }
 
     total_bytes += len + 1;
 
@@ -330,7 +325,7 @@
 #endif
 
 static int sync_send(int fd, const char *lpath, const char *rpath,
-                     unsigned mtime, mode_t mode, int show_progress)
+                     unsigned mtime, mode_t mode, bool show_progress)
 {
     syncmsg msg;
     int len, r;
@@ -395,26 +390,7 @@
     return -1;
 }
 
-static int mkdirs(const char *name)
-{
-    int ret;
-    char *x = (char *)name + 1;
-
-    for(;;) {
-        x = adb_dirstart(x);
-        if(x == 0) return 0;
-        *x = 0;
-        ret = adb_mkdir(name, 0775);
-        *x = OS_PATH_SEPARATOR;
-        if((ret < 0) && (errno != EEXIST)) {
-            return ret;
-        }
-        x++;
-    }
-    return 0;
-}
-
-static int sync_recv(int fd, const char* rpath, const char* lpath, int show_progress) {
+static int sync_recv(int fd, const char* rpath, const char* lpath, bool show_progress) {
     syncmsg msg;
     int len;
     int lfd = -1;
@@ -541,12 +517,12 @@
         return 1;
     }
 
-    if(sync_ls(fd, path, do_sync_ls_cb, 0)) {
+    if (sync_ls(fd, path, do_sync_ls_cb, 0)) {
         return 1;
-    } else {
-        sync_quit(fd);
-        return 0;
     }
+
+    sync_quit(fd);
+    return 0;
 }
 
 struct copyinfo
@@ -730,11 +706,7 @@
 }
 
 
-int do_sync_push(const char *lpath, const char *rpath, int show_progress)
-{
-    struct stat st;
-    unsigned mode;
-
+int do_sync_push(const char* lpath, const char* rpath, bool show_progress) {
     std::string error;
     int fd = adb_connect("sync:", &error);
     if (fd < 0) {
@@ -742,51 +714,38 @@
         return 1;
     }
 
-    if(stat(lpath, &st)) {
+    struct stat st;
+    if (stat(lpath, &st)) {
         fprintf(stderr,"cannot stat '%s': %s\n", lpath, strerror(errno));
         sync_quit(fd);
         return 1;
     }
 
-    if(S_ISDIR(st.st_mode)) {
+    if (S_ISDIR(st.st_mode)) {
         BEGIN();
-        if(copy_local_dir_remote(fd, lpath, rpath, 0, 0)) {
+        if (copy_local_dir_remote(fd, lpath, rpath, 0, 0)) {
             return 1;
-        } else {
-            END();
-            sync_quit(fd);
         }
     } else {
-        if(sync_readmode(fd, rpath, &mode)) {
+        unsigned mode;
+        if (sync_readmode(fd, rpath, &mode)) {
             return 1;
         }
-        if((mode != 0) && S_ISDIR(mode)) {
-                /* if we're copying a local file to a remote directory,
-                ** we *really* want to copy to remotedir + "/" + localfilename
-                */
-            const char *name = adb_dirstop(lpath);
-            if(name == 0) {
-                name = lpath;
-            } else {
-                name++;
-            }
-            int  tmplen = strlen(name) + strlen(rpath) + 2;
-            char *tmp = reinterpret_cast<char*>(
-                malloc(strlen(name) + strlen(rpath) + 2));
-            if(tmp == 0) return 1;
-            snprintf(tmp, tmplen, "%s/%s", rpath, name);
-            rpath = tmp;
+        std::string path_holder;
+        if ((mode != 0) && S_ISDIR(mode)) {
+            // If we're copying a local file to a remote directory,
+            // we really want to copy to remote_dir + "/" + local_filename.
+            path_holder = android::base::StringPrintf("%s/%s", rpath, adb_basename(lpath).c_str());
+            rpath = path_holder.c_str();
         }
         BEGIN();
-        if(sync_send(fd, lpath, rpath, st.st_mtime, st.st_mode, show_progress)) {
+        if (sync_send(fd, lpath, rpath, st.st_mtime, st.st_mode, show_progress)) {
             return 1;
-        } else {
-            END();
-            sync_quit(fd);
-            return 0;
         }
     }
 
+    END();
+    sync_quit(fd);
     return 0;
 }
 
@@ -952,11 +911,7 @@
     return ret;
 }
 
-int do_sync_pull(const char *rpath, const char *lpath, int show_progress, int copy_attrs)
-{
-    unsigned mode, time;
-    struct stat st;
-
+int do_sync_pull(const char* rpath, const char* lpath, bool show_progress, int copy_attrs) {
     std::string error;
     int fd = adb_connect("sync:", &error);
     if (fd < 0) {
@@ -964,56 +919,46 @@
         return 1;
     }
 
-    if(sync_readtime(fd, rpath, &time, &mode)) {
+    unsigned mode, time;
+    if (sync_readtime(fd, rpath, &time, &mode)) {
         return 1;
     }
-    if(mode == 0) {
+    if (mode == 0) {
         fprintf(stderr,"remote object '%s' does not exist\n", rpath);
         return 1;
     }
 
-    if(S_ISREG(mode) || S_ISLNK(mode) || S_ISCHR(mode) || S_ISBLK(mode)) {
-        if(stat(lpath, &st) == 0) {
-            if(S_ISDIR(st.st_mode)) {
-                    /* if we're copying a remote file to a local directory,
-                    ** we *really* want to copy to localdir + "/" + remotefilename
-                    */
-                const char *name = adb_dirstop(rpath);
-                if(name == 0) {
-                    name = rpath;
-                } else {
-                    name++;
-                }
-                int  tmplen = strlen(name) + strlen(lpath) + 2;
-                char *tmp = reinterpret_cast<char*>(malloc(tmplen));
-                if(tmp == 0) return 1;
-                snprintf(tmp, tmplen, "%s/%s", lpath, name);
-                lpath = tmp;
+    if (S_ISREG(mode) || S_ISLNK(mode) || S_ISCHR(mode) || S_ISBLK(mode)) {
+        std::string path_holder;
+        struct stat st;
+        if (stat(lpath, &st) == 0) {
+            if (S_ISDIR(st.st_mode)) {
+                // If we're copying a remote file to a local directory,
+                // we really want to copy to local_dir + "/" + basename(remote).
+                path_holder = android::base::StringPrintf("%s/%s", lpath, adb_basename(rpath).c_str());
+                lpath = path_holder.c_str();
             }
         }
         BEGIN();
         if (sync_recv(fd, rpath, lpath, show_progress)) {
             return 1;
         } else {
-            if (copy_attrs && set_time_and_mode(lpath, time, mode))
+            if (copy_attrs && set_time_and_mode(lpath, time, mode)) {
                 return 1;
-            END();
-            sync_quit(fd);
-            return 0;
+            }
         }
     } else if(S_ISDIR(mode)) {
         BEGIN();
         if (copy_remote_dir_local(fd, rpath, lpath, copy_attrs)) {
             return 1;
-        } else {
-            END();
-            sync_quit(fd);
-            return 0;
         }
     } else {
         fprintf(stderr,"remote object '%s' not a file or directory\n", rpath);
         return 1;
     }
+    END();
+    sync_quit(fd);
+    return 0;
 }
 
 int do_sync_sync(const std::string& lpath, const std::string& rpath, bool list_only)
@@ -1030,9 +975,8 @@
     BEGIN();
     if (copy_local_dir_remote(fd, lpath.c_str(), rpath.c_str(), 1, list_only)) {
         return 1;
-    } else {
-        END();
-        sync_quit(fd);
-        return 0;
     }
+    END();
+    sync_quit(fd);
+    return 0;
 }
diff --git a/adb/file_sync_service.cpp b/adb/file_sync_service.cpp
index e8e9a0f..ea019f4 100644
--- a/adb/file_sync_service.cpp
+++ b/adb/file_sync_service.cpp
@@ -34,47 +34,46 @@
 #include "adb_io.h"
 #include "private/android_filesystem_config.h"
 
-static bool should_use_fs_config(const char* path) {
+#include <base/strings.h>
+
+static bool should_use_fs_config(const std::string& path) {
     // TODO: use fs_config to configure permissions on /data.
-    return strncmp("/system/", path, strlen("/system/")) == 0 ||
-           strncmp("/vendor/", path, strlen("/vendor/")) == 0 ||
-           strncmp("/oem/", path, strlen("/oem/")) == 0;
+    return android::base::StartsWith(path, "/system/") ||
+           android::base::StartsWith(path, "/vendor/") ||
+           android::base::StartsWith(path, "/oem/");
 }
 
-static int mkdirs(char *name)
-{
-    int ret;
-    char *x = name + 1;
+static bool secure_mkdirs(const std::string& path) {
     uid_t uid = -1;
     gid_t gid = -1;
     unsigned int mode = 0775;
     uint64_t cap = 0;
 
-    if(name[0] != '/') return -1;
+    if (path[0] != '/') return false;
 
-    for(;;) {
-        x = adb_dirstart(x);
-        if(x == 0) return 0;
-        *x = 0;
-        if (should_use_fs_config(name)) {
-            fs_config(name, 1, &uid, &gid, &mode, &cap);
+    std::vector<std::string> path_components = android::base::Split(path, "/");
+    path_components.pop_back(); // For "/system/bin/sh", only create "/system/bin".
+
+    std::string partial_path;
+    for (auto& path_component : path_components) {
+        if (partial_path.back() != OS_PATH_SEPARATOR) partial_path += OS_PATH_SEPARATOR;
+        partial_path += path_component;
+
+        if (should_use_fs_config(partial_path)) {
+            fs_config(partial_path.c_str(), 1, &uid, &gid, &mode, &cap);
         }
-        ret = adb_mkdir(name, mode);
-        if((ret < 0) && (errno != EEXIST)) {
-            D("mkdir(\"%s\") -> %s\n", name, strerror(errno));
-            *x = '/';
-            return ret;
-        } else if(ret == 0) {
-            ret = chown(name, uid, gid);
-            if (ret < 0) {
-                *x = '/';
-                return ret;
+        if (adb_mkdir(partial_path.c_str(), mode) == -1) {
+            if (errno != EEXIST) {
+                return false;
             }
-            selinux_android_restorecon(name, 0);
+        } else {
+            if (chown(partial_path.c_str(), uid, gid) == -1) {
+                return false;
+            }
+            selinux_android_restorecon(partial_path.c_str(), 0);
         }
-        *x++ = '/';
     }
-    return 0;
+    return true;
 }
 
 static int do_stat(int s, const char *path)
@@ -99,26 +98,24 @@
 
 static int do_list(int s, const char *path)
 {
-    DIR *d;
     struct dirent *de;
     struct stat st;
-    syncmsg msg;
-    int len;
 
     char tmp[1024 + 256 + 1];
     char *fname;
 
-    len = strlen(path);
+    size_t len = strlen(path);
     memcpy(tmp, path, len);
     tmp[len] = '/';
     fname = tmp + len + 1;
 
+    syncmsg msg;
     msg.dent.id = ID_DENT;
 
-    d = opendir(path);
-    if(d == 0) goto done;
+    std::unique_ptr<DIR, int(*)(DIR*)> d(opendir(path), closedir);
+    if (!d) goto done;
 
-    while((de = readdir(d))) {
+    while ((de = readdir(d.get()))) {
         int len = strlen(de->d_name);
 
             /* not supposed to be possible, but
@@ -134,14 +131,11 @@
 
             if(!WriteFdExactly(s, &msg.dent, sizeof(msg.dent)) ||
                !WriteFdExactly(s, de->d_name, len)) {
-                closedir(d);
                 return -1;
             }
         }
     }
 
-    closedir(d);
-
 done:
     msg.dent.id = ID_DONE;
     msg.dent.mode = 0;
@@ -182,7 +176,7 @@
 
     fd = adb_open_mode(path, O_WRONLY | O_CREAT | O_EXCL | O_CLOEXEC, mode);
     if(fd < 0 && errno == ENOENT) {
-        if(mkdirs(path) != 0) {
+        if (!secure_mkdirs(path)) {
             if(fail_errno(s))
                 return -1;
             fd = -1;
@@ -294,7 +288,7 @@
 
     ret = symlink(buffer, path);
     if(ret && errno == ENOENT) {
-        if(mkdirs(path) != 0) {
+        if (!secure_mkdirs(path)) {
             fail_errno(s);
             return -1;
         }
diff --git a/adb/file_sync_service.h b/adb/file_sync_service.h
index 344eb98..1d3e3bd 100644
--- a/adb/file_sync_service.h
+++ b/adb/file_sync_service.h
@@ -68,9 +68,9 @@
 
 void file_sync_service(int fd, void *cookie);
 int do_sync_ls(const char *path);
-int do_sync_push(const char *lpath, const char *rpath, int show_progress);
+int do_sync_push(const char *lpath, const char *rpath, bool show_progress);
 int do_sync_sync(const std::string& lpath, const std::string& rpath, bool list_only);
-int do_sync_pull(const char *rpath, const char *lpath, int show_progress, int pullTime);
+int do_sync_pull(const char *rpath, const char *lpath, bool show_progress, int pullTime);
 
 #define SYNC_DATA_MAX (64*1024)
 
diff --git a/adb/get_my_path_windows.cpp b/adb/get_my_path_windows.cpp
deleted file mode 100644
index 9d23e1c..0000000
--- a/adb/get_my_path_windows.cpp
+++ /dev/null
@@ -1,36 +0,0 @@
-/*
- * Copyright (C) 2007 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <assert.h>
-#include <limits.h>
-#include <windows.h>
-
-#include "adb.h"
-
-void get_my_path(char *exe, size_t maxLen)
-{
-    char  *r;
-
-    /* XXX: should be GetModuleFileNameA */
-    if (GetModuleFileName(NULL, exe, maxLen) > 0) {
-        r = strrchr(exe, '\\');
-        if (r != NULL)
-            *r = '\0';
-    } else {
-        exe[0] = '\0';
-    }
-}
-
diff --git a/adb/jdwp_service.cpp b/adb/jdwp_service.cpp
index c0f7ec2..06e7780 100644
--- a/adb/jdwp_service.cpp
+++ b/adb/jdwp_service.cpp
@@ -22,6 +22,7 @@
 
 #include <errno.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
 
@@ -435,7 +436,7 @@
               __FUNCTION__, strerror(errno));
             return -1;
         }
-        D("socketpair: (%d,%d)", fds[0], fds[1]);
+        D("socketpair: (%d,%d)\n", fds[0], fds[1]);
 
         proc->out_fds[ proc->out_count ] = fds[1];
         if (++proc->out_count == 1)
@@ -608,7 +609,7 @@
     */
     if (jdwp->pass == 0) {
         apacket*  p = get_apacket();
-        p->len = jdwp_process_list((char*)p->data, MAX_PAYLOAD);
+        p->len = jdwp_process_list((char*)p->data, s->get_max_payload());
         peer->enqueue(peer, p);
         jdwp->pass = 1;
     }
@@ -695,7 +696,7 @@
     if (t->need_update) {
         apacket*  p = get_apacket();
         t->need_update = 0;
-        p->len = jdwp_process_list_msg((char*)p->data, sizeof(p->data));
+        p->len = jdwp_process_list_msg((char*)p->data, s->get_max_payload());
         s->peer->enqueue(s->peer, p);
     }
 }
diff --git a/adb/mutex_list.h b/adb/mutex_list.h
index ff72751..9003361 100644
--- a/adb/mutex_list.h
+++ b/adb/mutex_list.h
@@ -6,6 +6,7 @@
 #ifndef ADB_MUTEX
 #error ADB_MUTEX not defined when including this file
 #endif
+ADB_MUTEX(dirname_lock)
 ADB_MUTEX(socket_list_lock)
 ADB_MUTEX(transport_lock)
 #if ADB_HOST
diff --git a/adb/protocol.txt b/adb/protocol.txt
index 333e7e7..5c7c6ba 100644
--- a/adb/protocol.txt
+++ b/adb/protocol.txt
@@ -60,11 +60,14 @@
 declares the maximum message body size that the remote system
 is willing to accept.
 
-Currently, version=0x01000000 and maxdata=4096
+Currently, version=0x01000000 and maxdata=256*1024. Older versions of adb
+hard-coded maxdata=4096, so CONNECT and AUTH packets sent to a device must not
+be larger than that because they're sent before the CONNECT from the device
+that tells the adb server what maxdata the device can support.
 
 Both sides send a CONNECT message when the connection between them is
 established.  Until a CONNECT message is received no other messages may
-be sent.  Any messages received before a CONNECT message MUST be ignored.
+be sent. Any messages received before a CONNECT message MUST be ignored.
 
 If a CONNECT message is received with an unknown version or insufficiently
 large maxdata value, the connection with the other side must be closed.
diff --git a/adb/services.cpp b/adb/services.cpp
index 227f22a..255be09 100644
--- a/adb/services.cpp
+++ b/adb/services.cpp
@@ -39,6 +39,7 @@
 #include <base/file.h>
 #include <base/stringprintf.h>
 #include <base/strings.h>
+#include <cutils/sockets.h>
 
 #if !ADB_HOST
 #include "cutils/android_reboot.h"
@@ -47,6 +48,7 @@
 
 #include "adb.h"
 #include "adb_io.h"
+#include "adb_utils.h"
 #include "file_sync_service.h"
 #include "remount_service.h"
 #include "transport.h"
@@ -57,6 +59,10 @@
     void *cookie;
 };
 
+enum class SubprocessType {
+    kPty,
+    kRaw,
+};
 
 void *service_bootstrap_func(void *x)
 {
@@ -205,7 +211,7 @@
         printf("cannot create service socket pair\n");
         return -1;
     }
-    D("socketpair: (%d,%d)", s[0], s[1]);
+    D("socketpair: (%d,%d)\n", s[0], s[1]);
 
     stinfo* sti = reinterpret_cast<stinfo*>(malloc(sizeof(stinfo)));
     if (sti == nullptr) {
@@ -317,7 +323,7 @@
         printf("[ cannot create socket pair - %s ]\n", strerror(errno));
         return -1;
     }
-    D("socketpair: (%d,%d)", sv[0], sv[1]);
+    D("socketpair: (%d,%d)\n", sv[0], sv[1]);
 
     *pid = fork();
     if (*pid < 0) {
@@ -387,17 +393,27 @@
     }
 }
 
-static int create_subproc_thread(const char *name, bool pty = false) {
+// Starts a subprocess and spawns a thread to wait for the subprocess to finish
+// and trigger the necessary cleanup.
+//
+// |name| is the command to execute in the subprocess; empty string will start
+//     an interactive session.
+// |type| selects between a PTY or raw subprocess.
+//
+// Returns an open file descriptor tied to the subprocess stdin/stdout/stderr.
+static int create_subproc_thread(const char *name, SubprocessType type) {
     const char *arg0, *arg1;
-    if (name == 0 || *name == 0) {
-        arg0 = "-"; arg1 = 0;
+    if (*name == '\0') {
+        arg0 = "-";
+        arg1 = nullptr;
     } else {
-        arg0 = "-c"; arg1 = name;
+        arg0 = "-c";
+        arg1 = name;
     }
 
     pid_t pid = -1;
     int ret_fd;
-    if (pty) {
+    if (type == SubprocessType::kPty) {
         ret_fd = create_subproc_pty(SHELL_COMMAND, arg0, arg1, &pid);
     } else {
         ret_fd = create_subproc_raw(SHELL_COMMAND, arg0, arg1, &pid);
@@ -430,17 +446,19 @@
         int port = atoi(name + 4);
         name = strchr(name + 4, ':');
         if(name == 0) {
-            ret = socket_loopback_client(port, SOCK_STREAM);
+            std::string error;
+            ret = network_loopback_client(port, SOCK_STREAM, &error);
             if (ret >= 0)
                 disable_tcp_nagle(ret);
         } else {
 #if ADB_HOST
-            ret = socket_network_client(name + 1, port, SOCK_STREAM);
+            std::string error;
+            ret = network_connect(name + 1, port, SOCK_STREAM, 0, &error);
 #else
             return -1;
 #endif
         }
-#ifndef HAVE_WINSOCK   /* winsock doesn't implement unix domain sockets */
+#if !defined(_WIN32)   /* winsock doesn't implement unix domain sockets */
     } else if(!strncmp(name, "local:", 6)) {
         ret = socket_local_client(name + 6,
                 ANDROID_SOCKET_NAMESPACE_RESERVED, SOCK_STREAM);
@@ -461,10 +479,17 @@
         ret = create_service_thread(framebuffer_service, 0);
     } else if (!strncmp(name, "jdwp:", 5)) {
         ret = create_jdwp_connection_fd(atoi(name+5));
-    } else if(!HOST && !strncmp(name, "shell:", 6)) {
-        ret = create_subproc_thread(name + 6, true);
-    } else if(!HOST && !strncmp(name, "exec:", 5)) {
-        ret = create_subproc_thread(name + 5);
+    } else if(!strncmp(name, "shell:", 6)) {
+        const char* args = name + 6;
+        if (*args) {
+            // Non-interactive session uses a raw subprocess.
+            ret = create_subproc_thread(args, SubprocessType::kRaw);
+        } else {
+            // Interactive session uses a PTY subprocess.
+            ret = create_subproc_thread(args, SubprocessType::kPty);
+        }
+    } else if(!strncmp(name, "exec:", 5)) {
+        ret = create_subproc_thread(name + 5, SubprocessType::kRaw);
     } else if(!strncmp(name, "sync:", 5)) {
         ret = create_service_thread(file_sync_service, NULL);
     } else if(!strncmp(name, "remount:", 8)) {
@@ -478,14 +503,17 @@
     } else if(!strncmp(name, "unroot:", 7)) {
         ret = create_service_thread(restart_unroot_service, NULL);
     } else if(!strncmp(name, "backup:", 7)) {
-        ret = create_subproc_thread(android::base::StringPrintf("/system/bin/bu backup %s",
-                                                                (name + 7)).c_str());
+        ret = create_subproc_thread(
+                android::base::StringPrintf("/system/bin/bu backup %s",
+                                            (name + 7)).c_str(),
+                SubprocessType::kRaw);
     } else if(!strncmp(name, "restore:", 8)) {
-        ret = create_subproc_thread("/system/bin/bu restore");
+        ret = create_subproc_thread("/system/bin/bu restore",
+                                    SubprocessType::kRaw);
     } else if(!strncmp(name, "tcpip:", 6)) {
         int port;
         if (sscanf(name + 6, "%d", &port) != 1) {
-            port = 0;
+            return -1;
         }
         ret = create_service_thread(restart_tcp_service, (void *) (uintptr_t) port);
     } else if(!strncmp(name, "usb:", 4)) {
@@ -541,35 +569,28 @@
     D("wait_for_state is done\n");
 }
 
-static void connect_device(const std::string& host, std::string* response) {
-    if (host.empty()) {
-        *response = "empty host name";
+static void connect_device(const std::string& address, std::string* response) {
+    if (address.empty()) {
+        *response = "empty address";
         return;
     }
 
-    std::vector<std::string> pieces = android::base::Split(host, ":");
-    const std::string& hostname = pieces[0];
-
+    std::string serial;
+    std::string host;
     int port = DEFAULT_ADB_LOCAL_TRANSPORT_PORT;
-    if (pieces.size() > 1) {
-        if (sscanf(pieces[1].c_str(), "%d", &port) != 1) {
-            *response = android::base::StringPrintf("bad port number %s", pieces[1].c_str());
-            return;
-        }
-    }
-
-    // This may look like we're putting 'host' back together,
-    // but we're actually inserting the default port if necessary.
-    std::string serial = android::base::StringPrintf("%s:%d", hostname.c_str(), port);
-
-    int fd = socket_network_client_timeout(hostname.c_str(), port, SOCK_STREAM, 10);
-    if (fd < 0) {
-        *response = android::base::StringPrintf("unable to connect to %s:%d",
-                                                hostname.c_str(), port);
+    if (!parse_host_and_port(address, &serial, &host, &port, response)) {
         return;
     }
 
-    D("client: connected on remote on fd %d\n", fd);
+    std::string error;
+    int fd = network_connect(host.c_str(), port, SOCK_STREAM, 10, &error);
+    if (fd == -1) {
+        *response = android::base::StringPrintf("unable to connect to %s: %s",
+                                                serial.c_str(), error.c_str());
+        return;
+    }
+
+    D("client: connected %s remote on fd %d\n", serial.c_str(), fd);
     close_on_exec(fd);
     disable_tcp_nagle(fd);
 
@@ -619,12 +640,13 @@
     }
 
     // Preconditions met, try to connect to the emulator.
-    if (!local_connect_arbitrary_ports(console_port, adb_port)) {
+    std::string error;
+    if (!local_connect_arbitrary_ports(console_port, adb_port, &error)) {
         *response = android::base::StringPrintf("Connected to emulator on ports %d,%d",
                                                 console_port, adb_port);
     } else {
-        *response = android::base::StringPrintf("Could not connect to emulator on ports %d,%d",
-                                                console_port, adb_port);
+        *response = android::base::StringPrintf("Could not connect to emulator on ports %d,%d: %s",
+                                                console_port, adb_port, error.c_str());
     }
 }
 
diff --git a/adb/sockets.cpp b/adb/sockets.cpp
index 621944e..d8ea2ee 100644
--- a/adb/sockets.cpp
+++ b/adb/sockets.cpp
@@ -330,8 +330,9 @@
     if (ev & FDE_READ) {
         apacket *p = get_apacket();
         unsigned char *x = p->data;
-        size_t avail = MAX_PAYLOAD;
-        int r;
+        const size_t max_payload = s->get_max_payload();
+        size_t avail = max_payload;
+        int r = 0;
         int is_eof = 0;
 
         while (avail > 0) {
@@ -354,10 +355,10 @@
         }
         D("LS(%d): fd=%d post avail loop. r=%d is_eof=%d forced_eof=%d\n",
           s->id, s->fd, r, is_eof, s->fde.force_eof);
-        if ((avail == MAX_PAYLOAD) || (s->peer == 0)) {
+        if ((avail == max_payload) || (s->peer == 0)) {
             put_apacket(p);
         } else {
-            p->len = MAX_PAYLOAD - avail;
+            p->len = max_payload - avail;
 
             r = s->peer->enqueue(s->peer, p);
             D("LS(%d): fd=%d post peer->enqueue(). r=%d\n", s->id, s->fd,
@@ -569,9 +570,9 @@
 {
     D("Connect_to_remote call RS(%d) fd=%d\n", s->id, s->fd);
     apacket *p = get_apacket();
-    int len = strlen(destination) + 1;
+    size_t len = strlen(destination) + 1;
 
-    if(len > (MAX_PAYLOAD-1)) {
+    if(len > (s->get_max_payload()-1)) {
         fatal("destination oversized");
     }
 
@@ -700,7 +701,7 @@
         s->pkt_first = p;
         s->pkt_last = p;
     } else {
-        if((s->pkt_first->len + p->len) > MAX_PAYLOAD) {
+        if((s->pkt_first->len + p->len) > s->get_max_payload()) {
             D("SS(%d): overflow\n", s->id);
             put_apacket(p);
             goto fail;
@@ -901,3 +902,14 @@
     ss->peer = s;
     s->ready(s);
 }
+
+size_t asocket::get_max_payload() const {
+    size_t max_payload = MAX_PAYLOAD;
+    if (transport) {
+        max_payload = std::min(max_payload, transport->get_max_payload());
+    }
+    if (peer && peer->transport) {
+        max_payload = std::min(max_payload, peer->transport->get_max_payload());
+    }
+    return max_payload;
+}
diff --git a/adb/sysdeps.h b/adb/sysdeps.h
index b7c16d9..6f3c443 100644
--- a/adb/sysdeps.h
+++ b/adb/sysdeps.h
@@ -24,6 +24,10 @@
 #  undef _WIN32
 #endif
 
+#include <errno.h>
+
+#include <string>
+
 /*
  * TEMP_FAILURE_RETRY is defined by some, but not all, versions of
  * <unistd.h>. (Alas, it is not as standard as we'd hoped!) So, if it's
@@ -39,21 +43,39 @@
     _rc; })
 #endif
 
+// Some printf-like functions are implemented in terms of
+// android::base::StringAppendV, so they should use the same attribute for
+// compile-time format string checking. On Windows, if the mingw version of
+// vsnprintf is used in StringAppendV, use `gnu_printf' which allows z in %zd
+// and PRIu64 (and related) to be recognized by the compile-time checking.
+#define ADB_FORMAT_ARCHETYPE __printf__
+#ifdef __USE_MINGW_ANSI_STDIO
+#if __USE_MINGW_ANSI_STDIO
+#undef ADB_FORMAT_ARCHETYPE
+#define ADB_FORMAT_ARCHETYPE gnu_printf
+#endif
+#endif
+
 #ifdef _WIN32
 
 #include <ctype.h>
 #include <direct.h>
+#include <dirent.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <io.h>
 #include <process.h>
 #include <sys/stat.h>
+#include <utime.h>
 #include <winsock2.h>
 #include <windows.h>
 #include <ws2tcpip.h>
 
+#include <string>   // Prototypes for narrow() and widen() use std::(w)string.
+
 #include "fdevent.h"
 
+#define OS_PATH_SEPARATORS "\\/"
 #define OS_PATH_SEPARATOR '\\'
 #define OS_PATH_SEPARATOR_STR "\\"
 #define ENV_PATH_SEPARATOR_STR ";"
@@ -102,26 +124,11 @@
 
 #define  S_ISLNK(m)   0   /* no symlinks on Win32 */
 
-static __inline__  int    adb_unlink(const char*  path)
-{
-    int  rc = unlink(path);
-
-    if (rc == -1 && errno == EACCES) {
-        /* unlink returns EACCES when the file is read-only, so we first */
-        /* try to make it writable, then unlink again...                  */
-        rc = chmod(path, _S_IREAD|_S_IWRITE );
-        if (rc == 0)
-            rc = unlink(path);
-    }
-    return rc;
-}
+extern int  adb_unlink(const char*  path);
 #undef  unlink
 #define unlink  ___xxx_unlink
 
-static __inline__ int  adb_mkdir(const char*  path, int mode)
-{
-	return _mkdir(path);
-}
+extern int adb_mkdir(const std::string& path, int mode);
 #undef   mkdir
 #define  mkdir  ___xxx_mkdir
 
@@ -163,36 +170,13 @@
 }
 
 // See the comments for the !defined(_WIN32) version of unix_open().
-static __inline__ int  unix_open(const char*  path, int options,...)
-{
-    if ((options & O_CREAT) == 0)
-    {
-        return  open(path, options);
-    }
-    else
-    {
-        int      mode;
-        va_list  args;
-        va_start( args, options );
-        mode = va_arg( args, int );
-        va_end( args );
-        return open(path, options, mode);
-    }
-}
+extern int unix_open(const char* path, int options, ...);
 #define  open    ___xxx_unix_open
 
 
 /* normally provided by <cutils/misc.h> */
 extern void*  load_file(const char*  pathname, unsigned*  psize);
 
-/* normally provided by <cutils/sockets.h> */
-extern int socket_loopback_client(int port, int type);
-extern int socket_network_client(const char *host, int port, int type);
-extern int socket_network_client_timeout(const char *host, int port, int type,
-                                         int timeout);
-extern int socket_loopback_server(int port, int type);
-extern int socket_inaddr_any_server(int port, int type);
-
 /* normally provided by "fdevent.h" */
 
 #define FDE_READ              0x0001
@@ -216,6 +200,12 @@
     Sleep( mseconds );
 }
 
+int network_loopback_client(int port, int type, std::string* error);
+int network_loopback_server(int port, int type, std::string* error);
+int network_inaddr_any_server(int port, int type, std::string* error);
+int network_connect(const std::string& host, int port, int type, int timeout,
+                    std::string* error);
+
 extern int  adb_socket_accept(int  serverfd, struct sockaddr*  addr, socklen_t  *addrlen);
 
 #undef   accept
@@ -240,42 +230,137 @@
 
 extern int  adb_socketpair( int  sv[2] );
 
-static __inline__  char*  adb_dirstart( const char*  path )
-{
-    char*  p  = strchr(path, '/');
-    char*  p2 = strchr(path, '\\');
-
-    if ( !p )
-        p = p2;
-    else if ( p2 && p2 > p )
-        p = p2;
-
-    return p;
-}
-
-static __inline__  char*  adb_dirstop( const char*  path )
-{
-    char*  p  = strrchr(path, '/');
-    char*  p2 = strrchr(path, '\\');
-
-    if ( !p )
-        p = p2;
-    else if ( p2 && p2 > p )
-        p = p2;
-
-    return p;
-}
-
-static __inline__  int  adb_is_absolute_host_path( const char*  path )
-{
+static __inline__ int adb_is_absolute_host_path(const char* path) {
     return isalpha(path[0]) && path[1] == ':' && path[2] == '\\';
 }
 
+// Like strerror(), but for Win32 error codes.
+std::string SystemErrorCodeToString(DWORD error_code);
+
+// We later define a macro mapping 'stat' to 'adb_stat'. This causes:
+//   struct stat s;
+//   stat(filename, &s);
+// To turn into the following:
+//   struct adb_stat s;
+//   adb_stat(filename, &s);
+// To get this to work, we need to make 'struct adb_stat' the same as
+// 'struct stat'. Note that this definition of 'struct adb_stat' uses the
+// *current* macro definition of stat, so it may actually be inheriting from
+// struct _stat32i64 (or some other remapping).
+struct adb_stat : public stat {};
+
+static_assert(sizeof(struct adb_stat) == sizeof(struct stat),
+    "structures should be the same");
+
+extern int adb_stat(const char* f, struct adb_stat* s);
+
+// stat is already a macro, undefine it so we can redefine it.
+#undef stat
+#define stat adb_stat
+
+// UTF-8 versions of POSIX APIs.
+extern DIR* adb_opendir(const char* dirname);
+extern struct dirent* adb_readdir(DIR* dir);
+extern int adb_closedir(DIR* dir);
+
+extern int adb_utime(const char *, struct utimbuf *);
+extern int adb_chmod(const char *, int);
+
+extern int adb_vfprintf(FILE *stream, const char *format, va_list ap)
+    __attribute__((__format__(ADB_FORMAT_ARCHETYPE, 2, 0)));
+extern int adb_fprintf(FILE *stream, const char *format, ...)
+    __attribute__((__format__(ADB_FORMAT_ARCHETYPE, 2, 3)));
+extern int adb_printf(const char *format, ...)
+    __attribute__((__format__(ADB_FORMAT_ARCHETYPE, 1, 2)));
+
+extern int adb_fputs(const char* buf, FILE* stream);
+extern int adb_fputc(int ch, FILE* stream);
+extern size_t adb_fwrite(const void* ptr, size_t size, size_t nmemb,
+                         FILE* stream);
+
+extern FILE* adb_fopen(const char* f, const char* m);
+
+extern char* adb_getenv(const char* name);
+
+extern char* adb_getcwd(char* buf, int size);
+
+// Remap calls to POSIX APIs to our UTF-8 versions.
+#define opendir adb_opendir
+#define readdir adb_readdir
+#define closedir adb_closedir
+#define rewinddir rewinddir_utf8_not_yet_implemented
+#define telldir telldir_utf8_not_yet_implemented
+#define seekdir seekdir_utf8_not_yet_implemented
+
+#define utime adb_utime
+#define chmod adb_chmod
+
+#define vfprintf adb_vfprintf
+#define fprintf adb_fprintf
+#define printf adb_printf
+#define fputs adb_fputs
+#define fputc adb_fputc
+#define fwrite adb_fwrite
+
+#define fopen adb_fopen
+
+#define getenv adb_getenv
+#define putenv putenv_utf8_not_yet_implemented
+#define setenv setenv_utf8_not_yet_implemented
+#define unsetenv unsetenv_utf8_not_yet_implemented
+
+#define getcwd adb_getcwd
+
+// 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.
+extern std::wstring widen(const std::string& utf8);
+extern std::wstring widen(const char* utf8);
+
+// Convert from UTF-16 to UTF-8, typically used to convert strings from OS and
+// C Runtime APIs that return wchar_t, to a format for our char-based data
+// structures.
+extern std::string narrow(const std::wstring& utf16);
+extern std::string narrow(const wchar_t* utf16);
+
+// Helper class to convert UTF-16 argv from wmain() to UTF-8 args that can be
+// passed to main().
+class NarrowArgs {
+public:
+    NarrowArgs(int argc, wchar_t** argv);
+    ~NarrowArgs();
+
+    inline char** data() {
+        return narrow_args;
+    }
+
+private:
+    char** narrow_args;
+};
+
+// Windows HANDLE values only use 32-bits of the type, even on 64-bit machines,
+// so they can fit in an int. To convert back, we just need to sign-extend.
+// https://msdn.microsoft.com/en-us/library/windows/desktop/aa384203%28v=vs.85%29.aspx
+// Note that this does not make a HANDLE value work with APIs like open(), nor
+// does this make a value from open() passable to APIs taking a HANDLE. This
+// just lets you take a HANDLE, pass it around as an int, and then use it again
+// as a HANDLE.
+inline int cast_handle_to_int(const HANDLE h) {
+    // truncate
+    return static_cast<int>(reinterpret_cast<INT_PTR>(h));
+}
+
+inline HANDLE cast_int_to_handle(const int fd) {
+    // sign-extend
+    return reinterpret_cast<HANDLE>(static_cast<INT_PTR>(fd));
+}
+
 #else /* !_WIN32 a.k.a. Unix */
 
 #include "fdevent.h"
-#include <cutils/sockets.h>
 #include <cutils/misc.h>
+#include <cutils/sockets.h>
+#include <cutils/threads.h>
 #include <signal.h>
 #include <sys/wait.h>
 #include <sys/stat.h>
@@ -285,11 +370,15 @@
 #include <unistd.h>
 #include <fcntl.h>
 #include <stdarg.h>
+#include <netdb.h>
 #include <netinet/in.h>
 #include <netinet/tcp.h>
 #include <string.h>
 #include <unistd.h>
 
+#include <string>
+
+#define OS_PATH_SEPARATORS "/"
 #define OS_PATH_SEPARATOR '/'
 #define OS_PATH_SEPARATOR_STR "/"
 #define ENV_PATH_SEPARATOR_STR ":"
@@ -432,6 +521,48 @@
 #undef   creat
 #define  creat  ___xxx_creat
 
+// Helper for network_* functions.
+inline int _fd_set_error_str(int fd, std::string* error) {
+  if (fd == -1) {
+    *error = strerror(errno);
+  }
+  return fd;
+}
+
+inline int network_loopback_client(int port, int type, std::string* error) {
+  return _fd_set_error_str(socket_loopback_client(port, type), error);
+}
+
+inline int network_loopback_server(int port, int type, std::string* error) {
+  return _fd_set_error_str(socket_loopback_server(port, type), error);
+}
+
+inline int network_inaddr_any_server(int port, int type, std::string* error) {
+  return _fd_set_error_str(socket_inaddr_any_server(port, type), error);
+}
+
+inline int network_local_server(const char *name, int namespace_id, int type,
+                                std::string* error) {
+  return _fd_set_error_str(socket_local_server(name, namespace_id, type),
+                           error);
+}
+
+inline int network_connect(const std::string& host, int port, int type,
+                           int timeout, std::string* error) {
+  int getaddrinfo_error = 0;
+  int fd = socket_network_client_timeout(host.c_str(), port, type, timeout,
+                                         &getaddrinfo_error);
+  if (fd != -1) {
+    return fd;
+  }
+  if (getaddrinfo_error != 0) {
+    *error = gai_strerror(getaddrinfo_error);
+  } else {
+    *error = strerror(errno);
+  }
+  return -1;
+}
+
 static __inline__ int  adb_socket_accept(int  serverfd, struct sockaddr*  addr, socklen_t  *addrlen)
 {
     int fd;
@@ -516,10 +647,11 @@
     usleep( mseconds*1000 );
 }
 
-static __inline__ int  adb_mkdir(const char*  path, int mode)
+static __inline__ int  adb_mkdir(const std::string& path, int mode)
 {
-    return mkdir(path, mode);
+    return mkdir(path.c_str(), mode);
 }
+
 #undef   mkdir
 #define  mkdir  ___xxx_mkdir
 
@@ -527,24 +659,13 @@
 {
 }
 
-static __inline__ char*  adb_dirstart(const char*  path)
-{
-    return strchr(path, '/');
-}
-
-static __inline__ char*  adb_dirstop(const char*  path)
-{
-    return strrchr(path, '/');
-}
-
-static __inline__  int  adb_is_absolute_host_path( const char*  path )
-{
+static __inline__ int adb_is_absolute_host_path(const char* path) {
     return path[0] == '/';
 }
 
 static __inline__ unsigned long adb_thread_id()
 {
-    return (unsigned long)pthread_self();
+    return (unsigned long)gettid();
 }
 
 #endif /* !_WIN32 */
diff --git a/adb/sysdeps_win32.cpp b/adb/sysdeps_win32.cpp
index 50c99f1..db552a2 100644
--- a/adb/sysdeps_win32.cpp
+++ b/adb/sysdeps_win32.cpp
@@ -25,6 +25,16 @@
 #include <stdio.h>
 #include <stdlib.h>
 
+#include <memory>
+#include <string>
+#include <unordered_map>
+
+#include <cutils/sockets.h>
+
+#include <base/logging.h>
+#include <base/stringprintf.h>
+#include <base/strings.h>
+
 #include "adb.h"
 
 extern void fatal(const char *fmt, ...);
@@ -78,6 +88,30 @@
 
 #define assert(cond)  do { if (!(cond)) fatal( "assertion failed '%s' on %s:%ld\n", #cond, __FILE__, __LINE__ ); } while (0)
 
+std::string SystemErrorCodeToString(const DWORD error_code) {
+  const int kErrorMessageBufferSize = 256;
+  WCHAR msgbuf[kErrorMessageBufferSize];
+  DWORD flags = FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS;
+  DWORD len = FormatMessageW(flags, nullptr, error_code, 0, msgbuf,
+                             arraysize(msgbuf), nullptr);
+  if (len == 0) {
+    return android::base::StringPrintf(
+        "Error (%lu) while retrieving error. (%lu)", GetLastError(),
+        error_code);
+  }
+
+  // Convert UTF-16 to UTF-8.
+  std::string msg(narrow(msgbuf));
+  // Messages returned by the system end with line breaks.
+  msg = android::base::Trim(msg);
+  // There are many Windows error messages compared to POSIX, so include the
+  // numeric error code for easier, quicker, accurate identification. Use
+  // decimal instead of hex because there are decimal ranges like 10000-11999
+  // for Winsock.
+  android::base::StringAppendF(&msg, " (%lu)", error_code);
+  return msg;
+}
+
 /**************************************************************************/
 /**************************************************************************/
 /*****                                                                *****/
@@ -92,13 +126,13 @@
     char     *data;
     DWORD     file_size;
 
-    file = CreateFile( fn,
-                       GENERIC_READ,
-                       FILE_SHARE_READ,
-                       NULL,
-                       OPEN_EXISTING,
-                       0,
-                       NULL );
+    file = CreateFileW( widen(fn).c_str(),
+                        GENERIC_READ,
+                        FILE_SHARE_READ,
+                        NULL,
+                        OPEN_EXISTING,
+                        0,
+                        NULL );
 
     if (file == INVALID_HANDLE_VALUE)
         return NULL;
@@ -169,7 +203,7 @@
 
 static adb_mutex_t   _win32_lock;
 static  FHRec        _win32_fhs[ WIN32_MAX_FHS ];
-static  int          _win32_fh_count;
+static  int          _win32_fh_next;  // where to start search for free FHRec
 
 static FH
 _fh_from_int( int   fd, const char*   func )
@@ -178,7 +212,7 @@
 
     fd -= WIN32_FH_BASE;
 
-    if (fd < 0 || fd >= _win32_fh_count) {
+    if (fd < 0 || fd >= WIN32_MAX_FHS) {
         D( "_fh_from_int: invalid fd %d passed to %s\n", fd + WIN32_FH_BASE,
            func );
         errno = EBADF;
@@ -210,28 +244,32 @@
 static FH
 _fh_alloc( FHClass  clazz )
 {
-    int  nn;
     FH   f = NULL;
 
     adb_mutex_lock( &_win32_lock );
 
-    if (_win32_fh_count < WIN32_MAX_FHS) {
-        f = &_win32_fhs[ _win32_fh_count++ ];
-        goto Exit;
-    }
-
-    for (nn = 0; nn < WIN32_MAX_FHS; nn++) {
-        if ( _win32_fhs[nn].clazz == NULL) {
-            f = &_win32_fhs[nn];
+    // Search entire array, starting from _win32_fh_next.
+    for (int nn = 0; nn < WIN32_MAX_FHS; nn++) {
+        // Keep incrementing _win32_fh_next to avoid giving out an index that
+        // was recently closed, to try to avoid use-after-free.
+        const int index = _win32_fh_next++;
+        // Handle wrap-around of _win32_fh_next.
+        if (_win32_fh_next == WIN32_MAX_FHS) {
+            _win32_fh_next = 0;
+        }
+        if (_win32_fhs[index].clazz == NULL) {
+            f = &_win32_fhs[index];
             goto Exit;
         }
     }
     D( "_fh_alloc: no more free file descriptors\n" );
+    errno = EMFILE;   // Too many open files
 Exit:
     if (f) {
-        f->clazz = clazz;
-        f->used  = 1;
-        f->eof   = 0;
+        f->clazz   = clazz;
+        f->used    = 1;
+        f->eof     = 0;
+        f->name[0] = '\0';
         clazz->_fh_init(f);
     }
     adb_mutex_unlock( &_win32_lock );
@@ -242,15 +280,37 @@
 static int
 _fh_close( FH   f )
 {
-    if ( f->used ) {
+    // Use lock so that closing only happens once and so that _fh_alloc can't
+    // allocate a FH that we're in the middle of closing.
+    adb_mutex_lock(&_win32_lock);
+    if (f->used) {
         f->clazz->_fh_close( f );
-        f->used = 0;
-        f->eof  = 0;
-        f->clazz = NULL;
+        f->name[0] = '\0';
+        f->eof     = 0;
+        f->used    = 0;
+        f->clazz   = NULL;
     }
+    adb_mutex_unlock(&_win32_lock);
     return 0;
 }
 
+// Deleter for unique_fh.
+class fh_deleter {
+ public:
+  void operator()(struct FHRec_* fh) {
+    // We're called from a destructor and destructors should not overwrite
+    // errno because callers may do:
+    //   errno = EBLAH;
+    //   return -1; // calls destructor, which should not overwrite errno
+    const int saved_errno = errno;
+    _fh_close(fh);
+    errno = saved_errno;
+  }
+};
+
+// Like std::unique_ptr, but calls _fh_close() instead of operator delete().
+typedef std::unique_ptr<struct FHRec_, fh_deleter> unique_fh;
+
 /**************************************************************************/
 /**************************************************************************/
 /*****                                                                *****/
@@ -353,17 +413,17 @@
 
     f = _fh_alloc( &_fh_file_class );
     if ( !f ) {
-        errno = ENOMEM;
         return -1;
     }
 
-    f->fh_handle = CreateFile( path, desiredAccess, shareMode, NULL, OPEN_EXISTING,
-                               0, NULL );
+    f->fh_handle = CreateFileW( widen(path).c_str(), desiredAccess, shareMode,
+                                NULL, OPEN_EXISTING, 0, NULL );
 
     if ( f->fh_handle == INVALID_HANDLE_VALUE ) {
+        const DWORD err = GetLastError();
         _fh_close(f);
-        D( "adb_open: could not open '%s':", path );
-        switch (GetLastError()) {
+        D( "adb_open: could not open '%s': ", path );
+        switch (err) {
             case ERROR_FILE_NOT_FOUND:
                 D( "file not found\n" );
                 errno = ENOENT;
@@ -375,7 +435,8 @@
                 return -1;
 
             default:
-                D( "unknown error\n" );
+                D( "unknown error: %s\n",
+                   SystemErrorCodeToString( err ).c_str() );
                 errno = ENOENT;
                 return -1;
         }
@@ -393,18 +454,19 @@
 
     f = _fh_alloc( &_fh_file_class );
     if ( !f ) {
-        errno = ENOMEM;
         return -1;
     }
 
-    f->fh_handle = CreateFile( path, GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE,
-                               NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL,
-                               NULL );
+    f->fh_handle = CreateFileW( widen(path).c_str(), GENERIC_WRITE,
+                                FILE_SHARE_READ | FILE_SHARE_WRITE,
+                                NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL,
+                                NULL );
 
     if ( f->fh_handle == INVALID_HANDLE_VALUE ) {
+        const DWORD err = GetLastError();
         _fh_close(f);
-        D( "adb_creat: could not open '%s':", path );
-        switch (GetLastError()) {
+        D( "adb_creat: could not open '%s': ", path );
+        switch (err) {
             case ERROR_FILE_NOT_FOUND:
                 D( "file not found\n" );
                 errno = ENOENT;
@@ -416,7 +478,8 @@
                 return -1;
 
             default:
-                D( "unknown error\n" );
+                D( "unknown error: %s\n",
+                   SystemErrorCodeToString( err ).c_str() );
                 errno = ENOENT;
                 return -1;
         }
@@ -463,21 +526,6 @@
 }
 
 
-int  adb_shutdown(int  fd)
-{
-    FH   f = _fh_from_int(fd, __func__);
-
-    if (!f || f->clazz != &_fh_socket_class) {
-        D("adb_shutdown: invalid fd %d\n", fd);
-        return -1;
-    }
-
-    D( "adb_shutdown: %s\n", f->name);
-    shutdown( f->fh_socket, SD_BOTH );
-    return 0;
-}
-
-
 int  adb_close(int  fd)
 {
     FH   f = _fh_from_int(fd, __func__);
@@ -501,29 +549,63 @@
 
 #undef setsockopt
 
-static void _socket_set_errno( void ) {
-    switch (WSAGetLastError()) {
+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.
+    switch ( err ) {
     case 0:              errno = 0; break;
     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;
     default:
-        D( "_socket_set_errno: unhandled value %d\n", WSAGetLastError() );
         errno = EINVAL;
+        D( "_socket_set_errno: mapping Windows error code %lu to errno %d\n",
+           err, errno );
     }
 }
 
 static void _fh_socket_init( FH  f ) {
     f->fh_socket = INVALID_SOCKET;
     f->event     = WSACreateEvent();
+    if (f->event == WSA_INVALID_EVENT) {
+        D("WSACreateEvent failed: %s\n",
+          SystemErrorCodeToString(WSAGetLastError()).c_str());
+
+        // _event_socket_start assumes that this field is INVALID_HANDLE_VALUE
+        // on failure, instead of NULL which is what Windows really returns on
+        // error. It might be better to change all the other code to look for
+        // NULL, but that is a much riskier change.
+        f->event = INVALID_HANDLE_VALUE;
+    }
     f->mask      = 0;
 }
 
 static int _fh_socket_close( FH  f ) {
-    /* gently tell any peer that we're closing the socket */
-    shutdown( f->fh_socket, SD_BOTH );
-    closesocket( f->fh_socket );
-    f->fh_socket = INVALID_SOCKET;
-    CloseHandle( f->event );
+    if (f->fh_socket != INVALID_SOCKET) {
+        /* gently tell any peer that we're closing the socket */
+        if (shutdown(f->fh_socket, SD_BOTH) == SOCKET_ERROR) {
+            // If the socket is not connected, this returns an error. We want to
+            // minimize logging spam, so don't log these errors for now.
+#if 0
+            D("socket shutdown failed: %s\n",
+              SystemErrorCodeToString(WSAGetLastError()).c_str());
+#endif
+        }
+        if (closesocket(f->fh_socket) == SOCKET_ERROR) {
+            D("closesocket failed: %s\n",
+              SystemErrorCodeToString(WSAGetLastError()).c_str());
+        }
+        f->fh_socket = INVALID_SOCKET;
+    }
+    if (f->event != NULL) {
+        if (!CloseHandle(f->event)) {
+            D("CloseHandle failed: %s\n",
+              SystemErrorCodeToString(GetLastError()).c_str());
+        }
+        f->event = NULL;
+    }
     f->mask = 0;
     return 0;
 }
@@ -536,7 +618,10 @@
 static int _fh_socket_read(FH f, void* buf, int len) {
     int  result = recv(f->fh_socket, reinterpret_cast<char*>(buf), len, 0);
     if (result == SOCKET_ERROR) {
-        _socket_set_errno();
+        const DWORD err = WSAGetLastError();
+        D("recv fd %d failed: %s\n", _fh_to_int(f),
+          SystemErrorCodeToString(err).c_str());
+        _socket_set_errno(err);
         result = -1;
     }
     return  result;
@@ -545,7 +630,10 @@
 static int _fh_socket_write(FH f, const void* buf, int len) {
     int  result = send(f->fh_socket, reinterpret_cast<const char*>(buf), len, 0);
     if (result == SOCKET_ERROR) {
-        _socket_set_errno();
+        const DWORD err = WSAGetLastError();
+        D("send fd %d failed: %s\n", _fh_to_int(f),
+          SystemErrorCodeToString(err).c_str());
+        _socket_set_errno(err);
         result = -1;
     }
     return result;
@@ -566,31 +654,39 @@
 static void
 _cleanup_winsock( void )
 {
+    // TODO: WSAStartup() might be called multiple times and this won't properly
+    // cleanup the right number of times. Plus, WSACleanup() probably doesn't
+    // make sense since it might interrupt other threads using Winsock (since
+    // our various threads are not explicitly cleanly shutdown at process exit).
     WSACleanup();
 }
 
 static void
 _init_winsock( void )
 {
+    // TODO: Multiple threads calling this may potentially cause multiple calls
+    // to WSAStartup() and multiple atexit() calls.
     if (!_winsock_init) {
         WSADATA  wsaData;
         int      rc = WSAStartup( MAKEWORD(2,2), &wsaData);
         if (rc != 0) {
-            fatal( "adb: could not initialize Winsock\n" );
+            fatal( "adb: could not initialize Winsock: %s",
+                   SystemErrorCodeToString( rc ).c_str());
         }
         atexit( _cleanup_winsock );
         _winsock_init = 1;
     }
 }
 
-int socket_loopback_client(int port, int type)
-{
-    FH  f = _fh_alloc( &_fh_socket_class );
+int network_loopback_client(int port, int type, std::string* error) {
     struct sockaddr_in addr;
     SOCKET  s;
 
-    if (!f)
+    unique_fh  f(_fh_alloc(&_fh_socket_class));
+    if (!f) {
+        *error = strerror(errno);
         return -1;
+    }
 
     if (!_winsock_init)
         _init_winsock();
@@ -602,32 +698,40 @@
 
     s = socket(AF_INET, type, 0);
     if(s == INVALID_SOCKET) {
-        D("socket_loopback_client: could not create socket\n" );
-        _fh_close(f);
+        *error = SystemErrorCodeToString(WSAGetLastError());
+        D("could not create socket: %s\n", error->c_str());
+        return -1;
+    }
+    f->fh_socket = s;
+
+    if(connect(s, (struct sockaddr *) &addr, sizeof(addr)) == SOCKET_ERROR) {
+        *error = SystemErrorCodeToString(WSAGetLastError());
+        D("could not connect to %s:%d: %s\n",
+          type != SOCK_STREAM ? "udp" : "tcp", port, error->c_str());
         return -1;
     }
 
-    f->fh_socket = s;
-    if(connect(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
-        D("socket_loopback_client: could not connect to %s:%d\n", type != SOCK_STREAM ? "udp" : "tcp", port );
-        _fh_close(f);
-        return -1;
-    }
-    snprintf( f->name, sizeof(f->name), "%d(lo-client:%s%d)", _fh_to_int(f), type != SOCK_STREAM ? "udp:" : "", port );
-    D( "socket_loopback_client: port %d type %s => fd %d\n", port, type != SOCK_STREAM ? "udp" : "tcp", _fh_to_int(f) );
-    return _fh_to_int(f);
+    const int fd = _fh_to_int(f.get());
+    snprintf( f->name, sizeof(f->name), "%d(lo-client:%s%d)", fd,
+              type != SOCK_STREAM ? "udp:" : "", port );
+    D( "port %d type %s => fd %d\n", port, type != SOCK_STREAM ? "udp" : "tcp",
+       fd );
+    f.release();
+    return fd;
 }
 
 #define LISTEN_BACKLOG 4
 
-int socket_loopback_server(int port, int type)
-{
-    FH   f = _fh_alloc( &_fh_socket_class );
+// interface_address is INADDR_LOOPBACK or INADDR_ANY.
+static int _network_server(int port, int type, u_long interface_address,
+                           std::string* error) {
     struct sockaddr_in addr;
     SOCKET  s;
     int  n;
 
+    unique_fh   f(_fh_alloc(&_fh_socket_class));
     if (!f) {
+        *error = strerror(errno);
         return -1;
     }
 
@@ -637,158 +741,159 @@
     memset(&addr, 0, sizeof(addr));
     addr.sin_family = AF_INET;
     addr.sin_port = htons(port);
-    addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
+    addr.sin_addr.s_addr = htonl(interface_address);
 
+    // TODO: Consider using dual-stack socket that can simultaneously listen on
+    // IPv4 and IPv6.
     s = socket(AF_INET, type, 0);
-    if(s == INVALID_SOCKET) return -1;
+    if (s == INVALID_SOCKET) {
+        *error = SystemErrorCodeToString(WSAGetLastError());
+        D("could not create socket: %s\n", error->c_str());
+        return -1;
+    }
 
     f->fh_socket = s;
 
     n = 1;
-    setsockopt(s, SOL_SOCKET, SO_EXCLUSIVEADDRUSE, (const char*)&n, sizeof(n));
+    if (setsockopt(s, SOL_SOCKET, SO_EXCLUSIVEADDRUSE, (const char*)&n,
+                   sizeof(n)) == SOCKET_ERROR) {
+        *error = SystemErrorCodeToString(WSAGetLastError());
+        D("setsockopt level %d optname %d failed: %s\n",
+          SOL_SOCKET, SO_EXCLUSIVEADDRUSE, error->c_str());
+        return -1;
+    }
 
-    if(bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
-        _fh_close(f);
+    if(bind(s, (struct sockaddr *) &addr, sizeof(addr)) == SOCKET_ERROR) {
+        *error = SystemErrorCodeToString(WSAGetLastError());
+        D("could not bind to %s:%d: %s\n",
+          type != SOCK_STREAM ? "udp" : "tcp", port, error->c_str());
         return -1;
     }
     if (type == SOCK_STREAM) {
-        int ret;
-
-        ret = listen(s, LISTEN_BACKLOG);
-        if (ret < 0) {
-            _fh_close(f);
+        if (listen(s, LISTEN_BACKLOG) == SOCKET_ERROR) {
+            *error = SystemErrorCodeToString(WSAGetLastError());
+            D("could not listen on %s:%d: %s\n",
+              type != SOCK_STREAM ? "udp" : "tcp", port, error->c_str());
             return -1;
         }
     }
-    snprintf( f->name, sizeof(f->name), "%d(lo-server:%s%d)", _fh_to_int(f), type != SOCK_STREAM ? "udp:" : "", port );
-    D( "socket_loopback_server: port %d type %s => fd %d\n", port, type != SOCK_STREAM ? "udp" : "tcp", _fh_to_int(f) );
-    return _fh_to_int(f);
+    const int fd = _fh_to_int(f.get());
+    snprintf( f->name, sizeof(f->name), "%d(%s-server:%s%d)", fd,
+              interface_address == INADDR_LOOPBACK ? "lo" : "any",
+              type != SOCK_STREAM ? "udp:" : "", port );
+    D( "port %d type %s => fd %d\n", port, type != SOCK_STREAM ? "udp" : "tcp",
+       fd );
+    f.release();
+    return fd;
 }
 
+int network_loopback_server(int port, int type, std::string* error) {
+    return _network_server(port, type, INADDR_LOOPBACK, error);
+}
 
-int socket_network_client(const char *host, int port, int type)
-{
-    FH  f = _fh_alloc( &_fh_socket_class );
-    struct hostent *hp;
-    struct sockaddr_in addr;
-    SOCKET s;
+int network_inaddr_any_server(int port, int type, std::string* error) {
+    return _network_server(port, type, INADDR_ANY, error);
+}
 
-    if (!f)
-        return -1;
-
-    if (!_winsock_init)
-        _init_winsock();
-
-    hp = gethostbyname(host);
-    if(hp == 0) {
-        _fh_close(f);
+int network_connect(const std::string& host, int port, int type, int timeout, std::string* error) {
+    unique_fh f(_fh_alloc(&_fh_socket_class));
+    if (!f) {
+        *error = strerror(errno);
         return -1;
     }
 
-    memset(&addr, 0, sizeof(addr));
-    addr.sin_family = hp->h_addrtype;
-    addr.sin_port = htons(port);
-    memcpy(&addr.sin_addr, hp->h_addr, hp->h_length);
+    if (!_winsock_init) _init_winsock();
 
-    s = socket(hp->h_addrtype, type, 0);
+    struct addrinfo hints;
+    memset(&hints, 0, sizeof(hints));
+    hints.ai_family = AF_UNSPEC;
+    hints.ai_socktype = type;
+
+    char port_str[16];
+    snprintf(port_str, sizeof(port_str), "%d", port);
+
+    struct addrinfo* addrinfo_ptr = nullptr;
+
+#if (NTDDI_VERSION >= NTDDI_WINXPSP2) || (_WIN32_WINNT >= _WIN32_WINNT_WS03)
+    // TODO: When the Android SDK tools increases the Windows system
+    // requirements >= WinXP SP2, switch to GetAddrInfoW(widen(host).c_str()).
+#else
+    // Otherwise, keep using getaddrinfo(), or do runtime API detection
+    // with GetProcAddress("GetAddrInfoW").
+#endif
+    if (getaddrinfo(host.c_str(), port_str, &hints, &addrinfo_ptr) != 0) {
+        *error = SystemErrorCodeToString(WSAGetLastError());
+        D("could not resolve host '%s' and port %s: %s\n", host.c_str(),
+          port_str, error->c_str());
+        return -1;
+    }
+    std::unique_ptr<struct addrinfo, decltype(freeaddrinfo)*>
+        addrinfo(addrinfo_ptr, freeaddrinfo);
+    addrinfo_ptr = nullptr;
+
+    // TODO: Try all the addresses if there's more than one? This just uses
+    // the first. Or, could call WSAConnectByName() (Windows Vista and newer)
+    // which tries all addresses, takes a timeout and more.
+    SOCKET s = socket(addrinfo->ai_family, addrinfo->ai_socktype,
+                      addrinfo->ai_protocol);
     if(s == INVALID_SOCKET) {
-        _fh_close(f);
+        *error = SystemErrorCodeToString(WSAGetLastError());
+        D("could not create socket: %s\n", error->c_str());
         return -1;
     }
     f->fh_socket = s;
 
-    if(connect(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
-        _fh_close(f);
+    // TODO: Implement timeouts for Windows. Seems like the default in theory
+    // (according to http://serverfault.com/a/671453) and in practice is 21 sec.
+    if(connect(s, addrinfo->ai_addr, addrinfo->ai_addrlen) == SOCKET_ERROR) {
+        *error = SystemErrorCodeToString(WSAGetLastError());
+        D("could not connect to %s:%s:%s: %s\n",
+          type != SOCK_STREAM ? "udp" : "tcp", host.c_str(), port_str,
+          error->c_str());
         return -1;
     }
 
-    snprintf( f->name, sizeof(f->name), "%d(net-client:%s%d)", _fh_to_int(f), type != SOCK_STREAM ? "udp:" : "", port );
-    D( "socket_network_client: host '%s' port %d type %s => fd %d\n", host, port, type != SOCK_STREAM ? "udp" : "tcp", _fh_to_int(f) );
-    return _fh_to_int(f);
-}
-
-
-int socket_network_client_timeout(const char *host, int port, int type, int timeout)
-{
-    // TODO: implement timeouts for Windows.
-    return socket_network_client(host, port, type);
-}
-
-
-int socket_inaddr_any_server(int port, int type)
-{
-    FH  f = _fh_alloc( &_fh_socket_class );
-    struct sockaddr_in addr;
-    SOCKET  s;
-    int n;
-
-    if (!f)
-        return -1;
-
-    if (!_winsock_init)
-        _init_winsock();
-
-    memset(&addr, 0, sizeof(addr));
-    addr.sin_family = AF_INET;
-    addr.sin_port = htons(port);
-    addr.sin_addr.s_addr = htonl(INADDR_ANY);
-
-    s = socket(AF_INET, type, 0);
-    if(s == INVALID_SOCKET) {
-        _fh_close(f);
-        return -1;
-    }
-
-    f->fh_socket = s;
-    n = 1;
-    setsockopt(s, SOL_SOCKET, SO_EXCLUSIVEADDRUSE, (const char*)&n, sizeof(n));
-
-    if(bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
-        _fh_close(f);
-        return -1;
-    }
-
-    if (type == SOCK_STREAM) {
-        int ret;
-
-        ret = listen(s, LISTEN_BACKLOG);
-        if (ret < 0) {
-            _fh_close(f);
-            return -1;
-        }
-    }
-    snprintf( f->name, sizeof(f->name), "%d(any-server:%s%d)", _fh_to_int(f), type != SOCK_STREAM ? "udp:" : "", port );
-    D( "socket_inaddr_server: port %d type %s => fd %d\n", port, type != SOCK_STREAM ? "udp" : "tcp", _fh_to_int(f) );
-    return _fh_to_int(f);
+    const int fd = _fh_to_int(f.get());
+    snprintf( f->name, sizeof(f->name), "%d(net-client:%s%d)", fd,
+              type != SOCK_STREAM ? "udp:" : "", port );
+    D( "host '%s' port %d type %s => fd %d\n", host.c_str(), port,
+       type != SOCK_STREAM ? "udp" : "tcp", fd );
+    f.release();
+    return fd;
 }
 
 #undef accept
 int  adb_socket_accept(int  serverfd, struct sockaddr*  addr, socklen_t  *addrlen)
 {
     FH   serverfh = _fh_from_int(serverfd, __func__);
-    FH   fh;
 
     if ( !serverfh || serverfh->clazz != &_fh_socket_class ) {
-        D( "adb_socket_accept: invalid fd %d\n", serverfd );
+        D("adb_socket_accept: invalid fd %d\n", serverfd);
+        errno = EBADF;
         return -1;
     }
 
-    fh = _fh_alloc( &_fh_socket_class );
+    unique_fh fh(_fh_alloc( &_fh_socket_class ));
     if (!fh) {
-        D( "adb_socket_accept: not enough memory to allocate accepted socket descriptor\n" );
+        PLOG(ERROR) << "adb_socket_accept: failed to allocate accepted socket "
+                       "descriptor";
         return -1;
     }
 
     fh->fh_socket = accept( serverfh->fh_socket, addr, addrlen );
     if (fh->fh_socket == INVALID_SOCKET) {
-        _fh_close( fh );
-        D( "adb_socket_accept: accept on fd %d return error %ld\n", serverfd, GetLastError() );
+        const DWORD err = WSAGetLastError();
+        LOG(ERROR) << "adb_socket_accept: accept on fd " << serverfd <<
+                      " failed: " + SystemErrorCodeToString(err);
+        _socket_set_errno( err );
         return -1;
     }
 
-    snprintf( fh->name, sizeof(fh->name), "%d(accept:%s)", _fh_to_int(fh), serverfh->name );
-    D( "adb_socket_accept on fd %d returns fd %d\n", serverfd, _fh_to_int(fh) );
-    return  _fh_to_int(fh);
+    const int fd = _fh_to_int(fh.get());
+    snprintf( fh->name, sizeof(fh->name), "%d(accept:%s)", fd, serverfh->name );
+    D( "adb_socket_accept on fd %d returns fd %d\n", serverfd, fd );
+    fh.release();
+    return  fd;
 }
 
 
@@ -798,10 +903,42 @@
 
     if ( !fh || fh->clazz != &_fh_socket_class ) {
         D("adb_setsockopt: invalid fd %d\n", fd);
+        errno = EBADF;
+        return -1;
+    }
+    int result = setsockopt( fh->fh_socket, level, optname,
+                             reinterpret_cast<const char*>(optval), optlen );
+    if ( result == SOCKET_ERROR ) {
+        const DWORD err = WSAGetLastError();
+        D( "adb_setsockopt: setsockopt on fd %d level %d optname %d "
+           "failed: %s\n", fd, level, optname,
+           SystemErrorCodeToString(err).c_str() );
+        _socket_set_errno( err );
+        result = -1;
+    }
+    return result;
+}
+
+
+int  adb_shutdown(int  fd)
+{
+    FH   f = _fh_from_int(fd, __func__);
+
+    if (!f || f->clazz != &_fh_socket_class) {
+        D("adb_shutdown: invalid fd %d\n", fd);
+        errno = EBADF;
         return -1;
     }
 
-    return setsockopt( fh->fh_socket, level, optname, reinterpret_cast<const char*>(optval), optlen );
+    D( "adb_shutdown: %s\n", f->name);
+    if (shutdown(f->fh_socket, SD_BOTH) == SOCKET_ERROR) {
+        const DWORD err = WSAGetLastError();
+        D("socket shutdown fd %d failed: %s\n", fd,
+          SystemErrorCodeToString(err).c_str());
+        _socket_set_errno(err);
+        return -1;
+    }
+    return 0;
 }
 
 /**************************************************************************/
@@ -1204,16 +1341,19 @@
 int  adb_socketpair(int sv[2]) {
     SocketPair pair;
 
-    FH fa = _fh_alloc(&_fh_socketpair_class);
-    FH fb = _fh_alloc(&_fh_socketpair_class);
-
-    if (!fa || !fb)
-        goto Fail;
+    unique_fh fa(_fh_alloc(&_fh_socketpair_class));
+    if (!fa) {
+        return -1;
+    }
+    unique_fh fb(_fh_alloc(&_fh_socketpair_class));
+    if (!fb) {
+        return -1;
+    }
 
     pair = reinterpret_cast<SocketPair>(malloc(sizeof(*pair)));
     if (pair == NULL) {
         D("adb_socketpair: not enough memory to allocate pipes\n" );
-        goto Fail;
+        return -1;
     }
 
     bip_buffer_init( &pair->a2b_bip );
@@ -1222,10 +1362,10 @@
     fa->fh_pair = pair;
     fb->fh_pair = pair;
     pair->used  = 2;
-    pair->a_fd  = fa;
+    pair->a_fd  = fa.get();
 
-    sv[0] = _fh_to_int(fa);
-    sv[1] = _fh_to_int(fb);
+    sv[0] = _fh_to_int(fa.get());
+    sv[1] = _fh_to_int(fb.get());
 
     pair->a2b_bip.fdin  = sv[0];
     pair->a2b_bip.fdout = sv[1];
@@ -1235,12 +1375,9 @@
     snprintf( fa->name, sizeof(fa->name), "%d(pair:%d)", sv[0], sv[1] );
     snprintf( fb->name, sizeof(fb->name), "%d(pair:%d)", sv[1], sv[0] );
     D( "adb_socketpair: returns (%d, %d)\n", sv[0], sv[1] );
+    fa.release();
+    fb.release();
     return 0;
-
-Fail:
-    _fh_close(fb);
-    _fh_close(fa);
-    return -1;
 }
 
 /**************************************************************************/
@@ -1546,7 +1683,7 @@
     threads = (WaitForAllParam*)malloc((chunks + (remains ? 1 : 0)) *
                                         sizeof(WaitForAllParam));
     if (threads == NULL) {
-        D("Unable to allocate thread array for %d handles.", handles_count);
+        D("Unable to allocate thread array for %d handles.\n", handles_count);
         return (int)WAIT_FAILED;
     }
 
@@ -1554,7 +1691,7 @@
      * reset" event that will remain set once it was set. */
     main_event = CreateEvent(NULL, TRUE, FALSE, NULL);
     if (main_event == NULL) {
-        D("Unable to create main event. Error: %d", (int)GetLastError());
+        D("Unable to create main event. Error: %ld\n", GetLastError());
         free(threads);
         return (int)WAIT_FAILED;
     }
@@ -1587,7 +1724,7 @@
                                                        &threads[chunk], 0, NULL);
         if (threads[chunk].thread == NULL) {
             /* Unable to create a waiter thread. Collapse. */
-            D("Unable to create a waiting thread %d of %d. errno=%d",
+            D("Unable to create a waiting thread %d of %d. errno=%d\n",
               chunk, chunks, errno);
             chunks = chunk;
             SetEvent(main_event);
@@ -2088,6 +2225,7 @@
     hook->check   = _event_socket_check;
     hook->peek    = _event_socket_peek;
 
+    // TODO: check return value?
     _event_socket_start( hook );
 }
 
@@ -2195,7 +2333,7 @@
         memset(input_record, 0, sizeof(*input_record));
         if (!ReadConsoleInputA(console, input_record, 1, &read_count)) {
             D("_get_interesting_input_record_uncached: ReadConsoleInputA() "
-              "failure, error %ld\n", GetLastError());
+              "failed: %s\n", SystemErrorCodeToString(GetLastError()).c_str());
             errno = EIO;
             return false;
         }
@@ -3009,8 +3147,8 @@
         if (!SetConsoleMode(in, _old_console_mode & ~(ENABLE_PROCESSED_INPUT |
             ENABLE_LINE_INPUT | ENABLE_ECHO_INPUT))) {
             // This really should not fail.
-            D("stdin_raw_init: SetConsoleMode() failure, error %ld\n",
-                GetLastError());
+            D("stdin_raw_init: SetConsoleMode() failed: %s\n",
+              SystemErrorCodeToString(GetLastError()).c_str());
         }
 
         // Once this is set, it means that stdin has been configured for
@@ -3031,8 +3169,8 @@
 
             if (!SetConsoleMode(in, _old_console_mode)) {
                 // This really should not fail.
-                D("stdin_raw_restore: SetConsoleMode() failure, error %ld\n",
-                    GetLastError());
+                D("stdin_raw_restore: SetConsoleMode() failed: %s\n",
+                  SystemErrorCodeToString(GetLastError()).c_str());
             }
         }
     }
@@ -3057,3 +3195,624 @@
 #pragma pop_macro("read")
     }
 }
+
+/**************************************************************************/
+/**************************************************************************/
+/*****                                                                *****/
+/*****      Unicode support                                           *****/
+/*****                                                                *****/
+/**************************************************************************/
+/**************************************************************************/
+
+// This implements support for using files with Unicode filenames and for
+// outputting Unicode text to a Win32 console window. This is inspired from
+// http://utf8everywhere.org/.
+//
+// Background
+// ----------
+//
+// On POSIX systems, to deal with files with Unicode filenames, just pass UTF-8
+// filenames to APIs such as open(). This works because filenames are largely
+// opaque 'cookies' (perhaps excluding path separators).
+//
+// On Windows, the native file APIs such as CreateFileW() take 2-byte wchar_t
+// UTF-16 strings. There is an API, CreateFileA() that takes 1-byte char
+// strings, but the strings are in the ANSI codepage and not UTF-8. (The
+// CreateFile() API is really just a macro that adds the W/A based on whether
+// the UNICODE preprocessor symbol is defined).
+//
+// Options
+// -------
+//
+// Thus, to write a portable program, there are a few options:
+//
+// 1. Write the program with wchar_t filenames (wchar_t path[256];).
+//    For Windows, just call CreateFileW(). For POSIX, write a wrapper openW()
+//    that takes a wchar_t string, converts it to UTF-8 and then calls the real
+//    open() API.
+//
+// 2. Write the program with a TCHAR typedef that is 2 bytes on Windows and
+//    1 byte on POSIX. Make T-* wrappers for various OS APIs and call those,
+//    potentially touching a lot of code.
+//
+// 3. Write the program with a 1-byte char filenames (char path[256];) that are
+//    UTF-8. For POSIX, just call open(). For Windows, write a wrapper that
+//    takes a UTF-8 string, converts it to UTF-16 and then calls the real OS
+//    or C Runtime API.
+//
+// The Choice
+// ----------
+//
+// The code below chooses option 3, the UTF-8 everywhere strategy. It
+// introduces narrow() which converts UTF-16 to UTF-8. This is used by the
+// NarrowArgs helper class that is used to convert wmain() args into UTF-8
+// args that are passed to main() at the beginning of program startup. We also
+// introduce widen() which converts from UTF-8 to UTF-16. This is used to
+// implement wrappers below that call UTF-16 OS and C Runtime APIs.
+//
+// Unicode console output
+// ----------------------
+//
+// The way to output Unicode to a Win32 console window is to call
+// WriteConsoleW() with UTF-16 text. (The user must also choose a proper font
+// such as Lucida Console or Consolas, and in the case of East Asian languages
+// (such as Chinese, Japanese, Korean), the user must go to the Control Panel
+// and change the "system locale" to Chinese, etc., which allows a Chinese, etc.
+// font to be used in console windows.)
+//
+// The problem is getting the C Runtime to make fprintf and related APIs call
+// WriteConsoleW() under the covers. The C Runtime API, _setmode() sounds
+// promising, but the various modes have issues:
+//
+// 1. _setmode(_O_TEXT) (the default) does not use WriteConsoleW() so UTF-8 and
+//    UTF-16 do not display properly.
+// 2. _setmode(_O_BINARY) does not use WriteConsoleW() and the text comes out
+//    totally wrong.
+// 3. _setmode(_O_U8TEXT) seems to cause the C Runtime _invalid_parameter
+//    handler to be called (upon a later I/O call), aborting the process.
+// 4. _setmode(_O_U16TEXT) and _setmode(_O_WTEXT) cause non-wide printf/fprintf
+//    to output nothing.
+//
+// So the only solution is to write our own adb_fprintf() that converts UTF-8
+// to UTF-16 and then calls WriteConsoleW().
+
+
+// Function prototype because attributes cannot be placed on func definitions.
+static void _widen_fatal(const char *fmt, ...)
+    __attribute__((__format__(ADB_FORMAT_ARCHETYPE, 1, 2)));
+
+// A version of fatal() that does not call adb_(v)fprintf(), so it can be
+// called from those functions.
+static void _widen_fatal(const char *fmt, ...) {
+    va_list ap;
+    va_start(ap, fmt);
+    // If (v)fprintf are macros that point to adb_(v)fprintf, when random adb
+    // code calls (v)fprintf, it may end up calling adb_(v)fprintf, which then
+    // calls _widen_fatal(). So then how does _widen_fatal() output a error?
+    // By directly calling real C Runtime APIs that don't properly output
+    // Unicode, but will be able to get a comprehendible message out. To do
+    // this, make sure we don't call (v)fprintf macros by undefining them.
+#pragma push_macro("fprintf")
+#pragma push_macro("vfprintf")
+#undef fprintf
+#undef vfprintf
+    fprintf(stderr, "error: ");
+    vfprintf(stderr, fmt, ap);
+    fprintf(stderr, "\n");
+#pragma pop_macro("vfprintf")
+#pragma pop_macro("fprintf")
+    va_end(ap);
+    exit(-1);
+}
+
+// TODO: Consider implementing widen() and narrow() out of std::wstring_convert
+// once libcxx is supported on Windows. Or, consider libutils/Unicode.cpp.
+
+// Convert from UTF-8 to UTF-16. A size of -1 specifies a NULL terminated
+// string. Any other size specifies the number of chars to convert, excluding
+// any NULL terminator (if you're passing an explicit size, you probably don't
+// have a NULL terminated string in the first place).
+std::wstring widen(const char* utf8, const int size) {
+    // Note: Do not call SystemErrorCodeToString() from widen() because
+    // SystemErrorCodeToString() calls narrow() which may call fatal() which
+    // calls adb_vfprintf() which calls widen(), potentially causing infinite
+    // recursion.
+    const int chars_to_convert = MultiByteToWideChar(CP_UTF8, 0, utf8, size,
+                                                     NULL, 0);
+    if (chars_to_convert <= 0) {
+        // UTF-8 to UTF-16 should be lossless, so we don't expect this to fail.
+        _widen_fatal("MultiByteToWideChar failed counting: %d, "
+                     "GetLastError: %lu", chars_to_convert, GetLastError());
+    }
+
+    std::wstring utf16;
+    size_t chars_to_allocate = chars_to_convert;
+    if (size == -1) {
+        // chars_to_convert includes a NULL terminator, so subtract space
+        // for that because resize() includes that itself.
+        --chars_to_allocate;
+    }
+    utf16.resize(chars_to_allocate);
+
+    // This uses &string[0] to get write-access to the entire string buffer
+    // which may be assuming that the chars are all contiguous, but it seems
+    // to work and saves us the hassle of using a temporary
+    // std::vector<wchar_t>.
+    const int result = MultiByteToWideChar(CP_UTF8, 0, utf8, size, &utf16[0],
+                                           chars_to_convert);
+    if (result != chars_to_convert) {
+        // UTF-8 to UTF-16 should be lossless, so we don't expect this to fail.
+        _widen_fatal("MultiByteToWideChar failed conversion: %d, "
+                     "GetLastError: %lu", result, GetLastError());
+    }
+
+    // If a size was passed in (size != -1), then the string is NULL terminated
+    // by a NULL char that was written by std::string::resize(). If size == -1,
+    // then MultiByteToWideChar() read a NULL terminator from the original
+    // string and converted it to a NULL UTF-16 char in the output.
+
+    return utf16;
+}
+
+// Convert a NULL terminated string from UTF-8 to UTF-16.
+std::wstring widen(const char* utf8) {
+    // Pass -1 to let widen() determine the string length.
+    return widen(utf8, -1);
+}
+
+// Convert from UTF-8 to UTF-16.
+std::wstring widen(const std::string& utf8) {
+    return widen(utf8.c_str(), utf8.length());
+}
+
+// Convert from UTF-16 to UTF-8.
+std::string narrow(const std::wstring& utf16) {
+    return narrow(utf16.c_str());
+}
+
+// Convert from UTF-16 to UTF-8.
+std::string narrow(const wchar_t* utf16) {
+    // Note: Do not call SystemErrorCodeToString() from narrow() because
+    // SystemErrorCodeToString() calls narrow() and we don't want potential
+    // infinite recursion.
+    const int chars_required = WideCharToMultiByte(CP_UTF8, 0, utf16, -1, NULL,
+                                                   0, NULL, NULL);
+    if (chars_required <= 0) {
+        // UTF-16 to UTF-8 should be lossless, so we don't expect this to fail.
+        fatal("WideCharToMultiByte failed counting: %d, GetLastError: %lu",
+              chars_required, GetLastError());
+    }
+
+    std::string utf8;
+    // Subtract space for the NULL terminator because resize() includes
+    // that itself. Note that this could potentially throw a std::bad_alloc
+    // exception.
+    utf8.resize(chars_required - 1);
+
+    // This uses &string[0] to get write-access to the entire string buffer
+    // which may be assuming that the chars are all contiguous, but it seems
+    // to work and saves us the hassle of using a temporary
+    // std::vector<char>.
+    const int result = WideCharToMultiByte(CP_UTF8, 0, utf16, -1, &utf8[0],
+                                           chars_required, NULL, NULL);
+    if (result != chars_required) {
+        // UTF-16 to UTF-8 should be lossless, so we don't expect this to fail.
+        fatal("WideCharToMultiByte failed conversion: %d, GetLastError: %lu",
+              result, GetLastError());
+    }
+
+    return utf8;
+}
+
+// Constructor for helper class to convert wmain() UTF-16 args to UTF-8 to
+// be passed to main().
+NarrowArgs::NarrowArgs(const int argc, wchar_t** const argv) {
+    narrow_args = new char*[argc + 1];
+
+    for (int i = 0; i < argc; ++i) {
+        narrow_args[i] = strdup(narrow(argv[i]).c_str());
+    }
+    narrow_args[argc] = nullptr;   // terminate
+}
+
+NarrowArgs::~NarrowArgs() {
+    if (narrow_args != nullptr) {
+        for (char** argp = narrow_args; *argp != nullptr; ++argp) {
+            free(*argp);
+        }
+        delete[] narrow_args;
+        narrow_args = nullptr;
+    }
+}
+
+int unix_open(const char* path, int options, ...) {
+    if ((options & O_CREAT) == 0) {
+        return _wopen(widen(path).c_str(), options);
+    } else {
+        int      mode;
+        va_list  args;
+        va_start(args, options);
+        mode = va_arg(args, int);
+        va_end(args);
+        return _wopen(widen(path).c_str(), options, mode);
+    }
+}
+
+// Version of stat() that takes a UTF-8 path.
+int adb_stat(const char* f, struct adb_stat* s) {
+#pragma push_macro("wstat")
+// This definition of wstat seems to be missing from <sys/stat.h>.
+#if defined(_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
+#ifdef _USE_32BIT_TIME_T
+#define wstat _wstat32i64
+#else
+#define wstat _wstat64
+#endif
+#else
+// <sys/stat.h> has a function prototype for wstat() that should be available.
+#endif
+
+    return wstat(widen(f).c_str(), s);
+
+#pragma pop_macro("wstat")
+}
+
+// Version of opendir() that takes a UTF-8 path.
+DIR* adb_opendir(const char* name) {
+    // Just cast _WDIR* to DIR*. This doesn't work if the caller reads any of
+    // the fields, but right now all the callers treat the structure as
+    // opaque.
+    return reinterpret_cast<DIR*>(_wopendir(widen(name).c_str()));
+}
+
+// Version of readdir() that returns UTF-8 paths.
+struct dirent* adb_readdir(DIR* dir) {
+    _WDIR* const wdir = reinterpret_cast<_WDIR*>(dir);
+    struct _wdirent* const went = _wreaddir(wdir);
+    if (went == nullptr) {
+        return nullptr;
+    }
+    // Convert from UTF-16 to UTF-8.
+    const std::string name_utf8(narrow(went->d_name));
+
+    // Cast the _wdirent* to dirent* and overwrite the d_name field (which has
+    // space for UTF-16 wchar_t's) with UTF-8 char's.
+    struct dirent* ent = reinterpret_cast<struct dirent*>(went);
+
+    if (name_utf8.length() + 1 > sizeof(went->d_name)) {
+        // Name too big to fit in existing buffer.
+        errno = ENOMEM;
+        return nullptr;
+    }
+
+    // Note that sizeof(_wdirent::d_name) is bigger than sizeof(dirent::d_name)
+    // because _wdirent contains wchar_t instead of char. So even if name_utf8
+    // can fit in _wdirent::d_name, the resulting dirent::d_name field may be
+    // bigger than the caller expects because they expect a dirent structure
+    // which has a smaller d_name field. Ignore this since the caller should be
+    // resilient.
+
+    // Rewrite the UTF-16 d_name field to UTF-8.
+    strcpy(ent->d_name, name_utf8.c_str());
+
+    return ent;
+}
+
+// Version of closedir() to go with our version of adb_opendir().
+int adb_closedir(DIR* dir) {
+    return _wclosedir(reinterpret_cast<_WDIR*>(dir));
+}
+
+// Version of unlink() that takes a UTF-8 path.
+int adb_unlink(const char* path) {
+    const std::wstring wpath(widen(path));
+
+    int  rc = _wunlink(wpath.c_str());
+
+    if (rc == -1 && errno == EACCES) {
+        /* unlink returns EACCES when the file is read-only, so we first */
+        /* try to make it writable, then unlink again...                 */
+        rc = _wchmod(wpath.c_str(), _S_IREAD | _S_IWRITE);
+        if (rc == 0)
+            rc = _wunlink(wpath.c_str());
+    }
+    return rc;
+}
+
+// Version of mkdir() that takes a UTF-8 path.
+int adb_mkdir(const std::string& path, int mode) {
+    return _wmkdir(widen(path.c_str()).c_str());
+}
+
+// Version of utime() that takes a UTF-8 path.
+int adb_utime(const char* path, struct utimbuf* u) {
+    static_assert(sizeof(struct utimbuf) == sizeof(struct _utimbuf),
+        "utimbuf and _utimbuf should be the same size because they both "
+        "contain the same types, namely time_t");
+    return _wutime(widen(path).c_str(), reinterpret_cast<struct _utimbuf*>(u));
+}
+
+// Version of chmod() that takes a UTF-8 path.
+int adb_chmod(const char* path, int mode) {
+    return _wchmod(widen(path).c_str(), mode);
+}
+
+// Internal function to get a Win32 console HANDLE from a C Runtime FILE*.
+static HANDLE _get_console_handle(FILE* const stream) {
+    // Get a C Runtime file descriptor number from the FILE* structure.
+    const int fd = fileno(stream);
+    if (fd < 0) {
+        return NULL;
+    }
+
+    // If it is not a "character device", it is probably a file and not a
+    // console. Do this check early because it is probably cheap. Still do more
+    // checks after this since there are devices that pass this test, but are
+    // not a console, such as NUL, the Windows /dev/null equivalent (I think).
+    if (!isatty(fd)) {
+        return NULL;
+    }
+
+    // Given a C Runtime file descriptor number, get the underlying OS
+    // file handle.
+    const intptr_t osfh = _get_osfhandle(fd);
+    if (osfh == -1) {
+        return NULL;
+    }
+
+    const HANDLE h = reinterpret_cast<const HANDLE>(osfh);
+
+    DWORD old_mode = 0;
+    if (!GetConsoleMode(h, &old_mode)) {
+        return NULL;
+    }
+
+    // If GetConsoleMode() was successful, assume this is a console.
+    return h;
+}
+
+// Internal helper function to write UTF-8 bytes to a console. Returns -1
+// on error.
+static int _console_write_utf8(const char* buf, size_t size, FILE* stream,
+                               HANDLE console) {
+    // Convert from UTF-8 to UTF-16.
+    // This could throw std::bad_alloc.
+    const std::wstring output(widen(buf, size));
+
+    // Note that this does not do \n => \r\n translation because that
+    // doesn't seem necessary for the Windows console. For the Windows
+    // console \r moves to the beginning of the line and \n moves to a new
+    // line.
+
+    // Flush any stream buffering so that our output is afterwards which
+    // makes sense because our call is afterwards.
+    (void)fflush(stream);
+
+    // Write UTF-16 to the console.
+    DWORD written = 0;
+    if (!WriteConsoleW(console, output.c_str(), output.length(), &written,
+                       NULL)) {
+        errno = EIO;
+        return -1;
+    }
+
+    // This is the number of UTF-16 chars written, which might be different
+    // than the number of UTF-8 chars passed in. It doesn't seem practical to
+    // get this count correct.
+    return written;
+}
+
+// Function prototype because attributes cannot be placed on func definitions.
+static int _console_vfprintf(const HANDLE console, FILE* stream,
+                             const char *format, va_list ap)
+    __attribute__((__format__(ADB_FORMAT_ARCHETYPE, 3, 0)));
+
+// Internal function to format a UTF-8 string and write it to a Win32 console.
+// Returns -1 on error.
+static int _console_vfprintf(const HANDLE console, FILE* stream,
+                             const char *format, va_list ap) {
+    std::string output_utf8;
+
+    // Format the string.
+    // This could throw std::bad_alloc.
+    android::base::StringAppendV(&output_utf8, format, ap);
+
+    return _console_write_utf8(output_utf8.c_str(), output_utf8.length(),
+                               stream, console);
+}
+
+// Version of vfprintf() that takes UTF-8 and can write Unicode to a
+// Windows console.
+int adb_vfprintf(FILE *stream, const char *format, va_list ap) {
+    const HANDLE console = _get_console_handle(stream);
+
+    // If there is an associated Win32 console, write to it specially,
+    // otherwise defer to the regular C Runtime, passing it UTF-8.
+    if (console != NULL) {
+        return _console_vfprintf(console, stream, format, ap);
+    } else {
+        // If vfprintf is a macro, undefine it, so we can call the real
+        // C Runtime API.
+#pragma push_macro("vfprintf")
+#undef vfprintf
+        return vfprintf(stream, format, ap);
+#pragma pop_macro("vfprintf")
+    }
+}
+
+// Version of fprintf() that takes UTF-8 and can write Unicode to a
+// Windows console.
+int adb_fprintf(FILE *stream, const char *format, ...) {
+    va_list ap;
+    va_start(ap, format);
+    const int result = adb_vfprintf(stream, format, ap);
+    va_end(ap);
+
+    return result;
+}
+
+// Version of printf() that takes UTF-8 and can write Unicode to a
+// Windows console.
+int adb_printf(const char *format, ...) {
+    va_list ap;
+    va_start(ap, format);
+    const int result = adb_vfprintf(stdout, format, ap);
+    va_end(ap);
+
+    return result;
+}
+
+// Version of fputs() that takes UTF-8 and can write Unicode to a
+// Windows console.
+int adb_fputs(const char* buf, FILE* stream) {
+    // adb_fprintf returns -1 on error, which is conveniently the same as EOF
+    // which fputs (and hence adb_fputs) should return on error.
+    return adb_fprintf(stream, "%s", buf);
+}
+
+// Version of fputc() that takes UTF-8 and can write Unicode to a
+// Windows console.
+int adb_fputc(int ch, FILE* stream) {
+    const int result = adb_fprintf(stream, "%c", ch);
+    if (result <= 0) {
+        // If there was an error, or if nothing was printed (which should be an
+        // error), return an error, which fprintf signifies with EOF.
+        return EOF;
+    }
+    // For success, fputc returns the char, cast to unsigned char, then to int.
+    return static_cast<unsigned char>(ch);
+}
+
+// Internal function to write UTF-8 to a Win32 console. Returns the number of
+// items (of length size) written. On error, returns a short item count or 0.
+static size_t _console_fwrite(const void* ptr, size_t size, size_t nmemb,
+                              FILE* stream, HANDLE console) {
+    // TODO: Note that a Unicode character could be several UTF-8 bytes. But
+    // if we're passed only some of the bytes of a character (for example, from
+    // the network socket for adb shell), we won't be able to convert the char
+    // to a complete UTF-16 char (or surrogate pair), so the output won't look
+    // right.
+    //
+    // To fix this, see libutils/Unicode.cpp for hints on decoding UTF-8.
+    //
+    // For now we ignore this problem because the alternative is that we'd have
+    // to parse UTF-8 and buffer things up (doable). At least this is better
+    // than what we had before -- always incorrect multi-byte UTF-8 output.
+    int result = _console_write_utf8(reinterpret_cast<const char*>(ptr),
+                                     size * nmemb, stream, console);
+    if (result == -1) {
+        return 0;
+    }
+    return result / size;
+}
+
+// Version of fwrite() that takes UTF-8 and can write Unicode to a
+// Windows console.
+size_t adb_fwrite(const void* ptr, size_t size, size_t nmemb, FILE* stream) {
+    const HANDLE console = _get_console_handle(stream);
+
+    // If there is an associated Win32 console, write to it specially,
+    // otherwise defer to the regular C Runtime, passing it UTF-8.
+    if (console != NULL) {
+        return _console_fwrite(ptr, size, nmemb, stream, console);
+    } else {
+        // If fwrite is a macro, undefine it, so we can call the real
+        // C Runtime API.
+#pragma push_macro("fwrite")
+#undef fwrite
+        return fwrite(ptr, size, nmemb, stream);
+#pragma pop_macro("fwrite")
+    }
+}
+
+// Version of fopen() that takes a UTF-8 filename and can access a file with
+// a Unicode filename.
+FILE* adb_fopen(const char* f, const char* m) {
+    return _wfopen(widen(f).c_str(), widen(m).c_str());
+}
+
+// Shadow UTF-8 environment variable name/value pairs that are created from
+// _wenviron the first time that adb_getenv() is called. Note that this is not
+// currently updated if putenv, setenv, unsetenv are called. Note that no
+// thread synchronization is done, but we're called early enough in
+// single-threaded startup that things work ok.
+static std::unordered_map<std::string, char*> g_environ_utf8;
+
+// Make sure that shadow UTF-8 environment variables are setup.
+static void _ensure_env_setup() {
+    // If some name/value pairs exist, then we've already done the setup below.
+    if (g_environ_utf8.size() != 0) {
+        return;
+    }
+
+    // Read name/value pairs from UTF-16 _wenviron and write new name/value
+    // pairs to UTF-8 g_environ_utf8. Note that it probably does not make sense
+    // to use the D() macro here because that tracing only works if the
+    // ADB_TRACE environment variable is setup, but that env var can't be read
+    // until this code completes.
+    for (wchar_t** env = _wenviron; *env != nullptr; ++env) {
+        wchar_t* const equal = wcschr(*env, L'=');
+        if (equal == nullptr) {
+            // Malformed environment variable with no equal sign. Shouldn't
+            // really happen, but we should be resilient to this.
+            continue;
+        }
+
+        const std::string name_utf8(narrow(std::wstring(*env, equal - *env)));
+        char* const value_utf8 = strdup(narrow(equal + 1).c_str());
+
+        // Overwrite any duplicate name, but there shouldn't be a dup in the
+        // first place.
+        g_environ_utf8[name_utf8] = value_utf8;
+    }
+}
+
+// Version of getenv() that takes a UTF-8 environment variable name and
+// retrieves a UTF-8 value.
+char* adb_getenv(const char* name) {
+    _ensure_env_setup();
+
+    const auto it = g_environ_utf8.find(std::string(name));
+    if (it == g_environ_utf8.end()) {
+        return nullptr;
+    }
+
+    return it->second;
+}
+
+// Version of getcwd() that returns the current working directory in UTF-8.
+char* adb_getcwd(char* buf, int size) {
+    wchar_t* wbuf = _wgetcwd(nullptr, 0);
+    if (wbuf == nullptr) {
+        return nullptr;
+    }
+
+    const std::string buf_utf8(narrow(wbuf));
+    free(wbuf);
+    wbuf = nullptr;
+
+    // If size was specified, make sure all the chars will fit.
+    if (size != 0) {
+        if (size < static_cast<int>(buf_utf8.length() + 1)) {
+            errno = ERANGE;
+            return nullptr;
+        }
+    }
+
+    // If buf was not specified, allocate storage.
+    if (buf == nullptr) {
+        if (size == 0) {
+            size = buf_utf8.length() + 1;
+        }
+        buf = reinterpret_cast<char*>(malloc(size));
+        if (buf == nullptr) {
+            return nullptr;
+        }
+    }
+
+    // Destination buffer was allocated with enough space, or we've already
+    // checked an existing buffer size for enough space.
+    strcpy(buf, buf_utf8.c_str());
+
+    return buf;
+}
diff --git a/adb/test_adb.py b/adb/test_adb.py
new file mode 100644
index 0000000..59aa14d
--- /dev/null
+++ b/adb/test_adb.py
@@ -0,0 +1,77 @@
+#!/usr/bin/env python
+#
+# 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.
+#
+"""Tests for the adb program itself.
+
+This differs from things in test_device.py in that there is no API for these
+things. Most of these tests involve specific error messages or the help text.
+"""
+from __future__ import print_function
+
+import random
+import subprocess
+import unittest
+
+import adb
+
+
+class NonApiTest(unittest.TestCase):
+    """Tests for ADB that aren't a part of the AndroidDevice API."""
+
+    def test_help(self):
+        """Make sure we get _something_ out of help."""
+        out = subprocess.check_output(
+            ['adb', 'help'], stderr=subprocess.STDOUT)
+        self.assertGreater(len(out), 0)
+
+    def test_version(self):
+        """Get a version number out of the output of adb."""
+        lines = subprocess.check_output(['adb', 'version']).splitlines()
+        version_line = lines[0]
+        self.assertRegexpMatches(
+            version_line, r'^Android Debug Bridge version \d+\.\d+\.\d+$')
+        if len(lines) == 2:
+            # Newer versions of ADB have a second line of output for the
+            # version that includes a specific revision (git SHA).
+            revision_line = lines[1]
+            self.assertRegexpMatches(
+                revision_line, r'^Revision [0-9a-f]{12}-android$')
+
+    def test_tcpip_error_messages(self):
+        p = subprocess.Popen(['adb', 'tcpip'], stdout=subprocess.PIPE,
+                             stderr=subprocess.STDOUT)
+        out, _ = p.communicate()
+        self.assertEqual(1, p.returncode)
+        self.assertIn('help message', out)
+
+        p = subprocess.Popen(['adb', 'tcpip', 'foo'], stdout=subprocess.PIPE,
+                             stderr=subprocess.STDOUT)
+        out, _ = p.communicate()
+        self.assertEqual(1, p.returncode)
+        self.assertIn('error', out)
+
+
+def main():
+    random.seed(0)
+    if len(adb.get_devices()) > 0:
+        suite = unittest.TestLoader().loadTestsFromName(__name__)
+        unittest.TextTestRunner(verbosity=3).run(suite)
+    else:
+        print('Test suite must be run with attached devices')
+
+
+if __name__ == '__main__':
+    main()
diff --git a/adb/test_device.py b/adb/test_device.py
new file mode 100644
index 0000000..c893ad4
--- /dev/null
+++ b/adb/test_device.py
@@ -0,0 +1,479 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+#
+# 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.
+#
+from __future__ import print_function
+
+import hashlib
+import os
+import posixpath
+import random
+import shlex
+import shutil
+import subprocess
+import tempfile
+import unittest
+
+import mock
+
+import adb
+
+
+def requires_root(func):
+    def wrapper(self, *args):
+        if self.device.get_prop('ro.debuggable') != '1':
+            raise unittest.SkipTest('requires rootable build')
+
+        was_root = self.device.shell(['id', '-un']).strip() == 'root'
+        if not was_root:
+            self.device.root()
+            self.device.wait()
+
+        try:
+            func(self, *args)
+        finally:
+            if not was_root:
+                self.device.unroot()
+                self.device.wait()
+
+    return wrapper
+
+
+class GetDeviceTest(unittest.TestCase):
+    def setUp(self):
+        self.android_serial = os.getenv('ANDROID_SERIAL')
+        if 'ANDROID_SERIAL' in os.environ:
+            del os.environ['ANDROID_SERIAL']
+
+    def tearDown(self):
+        if self.android_serial is not None:
+            os.environ['ANDROID_SERIAL'] = self.android_serial
+        else:
+            if 'ANDROID_SERIAL' in os.environ:
+                del os.environ['ANDROID_SERIAL']
+
+    @mock.patch('adb.device.get_devices')
+    def test_explicit(self, mock_get_devices):
+        mock_get_devices.return_value = ['foo', 'bar']
+        device = adb.get_device('foo')
+        self.assertEqual(device.serial, 'foo')
+
+    @mock.patch('adb.device.get_devices')
+    def test_from_env(self, mock_get_devices):
+        mock_get_devices.return_value = ['foo', 'bar']
+        os.environ['ANDROID_SERIAL'] = 'foo'
+        device = adb.get_device()
+        self.assertEqual(device.serial, 'foo')
+
+    @mock.patch('adb.device.get_devices')
+    def test_arg_beats_env(self, mock_get_devices):
+        mock_get_devices.return_value = ['foo', 'bar']
+        os.environ['ANDROID_SERIAL'] = 'bar'
+        device = adb.get_device('foo')
+        self.assertEqual(device.serial, 'foo')
+
+    @mock.patch('adb.device.get_devices')
+    def test_no_such_device(self, mock_get_devices):
+        mock_get_devices.return_value = ['foo', 'bar']
+        self.assertRaises(adb.DeviceNotFoundError, adb.get_device, ['baz'])
+
+        os.environ['ANDROID_SERIAL'] = 'baz'
+        self.assertRaises(adb.DeviceNotFoundError, adb.get_device)
+
+    @mock.patch('adb.device.get_devices')
+    def test_unique_device(self, mock_get_devices):
+        mock_get_devices.return_value = ['foo']
+        device = adb.get_device()
+        self.assertEqual(device.serial, 'foo')
+
+    @mock.patch('adb.device.get_devices')
+    def test_no_unique_device(self, mock_get_devices):
+        mock_get_devices.return_value = ['foo', 'bar']
+        self.assertRaises(adb.NoUniqueDeviceError, adb.get_device)
+
+
+class DeviceTest(unittest.TestCase):
+    def setUp(self):
+        self.device = adb.get_device()
+
+
+class ShellTest(DeviceTest):
+    def test_cat(self):
+        """Check that we can at least cat a file."""
+        out = self.device.shell(['cat', '/proc/uptime']).strip()
+        elements = out.split()
+        self.assertEqual(len(elements), 2)
+
+        uptime, idle = elements
+        self.assertGreater(float(uptime), 0.0)
+        self.assertGreater(float(idle), 0.0)
+
+    def test_throws_on_failure(self):
+        self.assertRaises(subprocess.CalledProcessError,
+                          self.device.shell, ['false'])
+
+    def test_output_not_stripped(self):
+        out = self.device.shell(['echo', 'foo'])
+        self.assertEqual(out, 'foo' + self.device.linesep)
+
+    def test_shell_nocheck_failure(self):
+        rc, out = self.device.shell_nocheck(['false'])
+        self.assertNotEqual(rc, 0)
+        self.assertEqual(out, '')
+
+    def test_shell_nocheck_output_not_stripped(self):
+        rc, out = self.device.shell_nocheck(['echo', 'foo'])
+        self.assertEqual(rc, 0)
+        self.assertEqual(out, 'foo' + self.device.linesep)
+
+    def test_can_distinguish_tricky_results(self):
+        # If result checking on ADB shell is naively implemented as
+        # `adb shell <cmd>; echo $?`, we would be unable to distinguish the
+        # output from the result for a cmd of `echo -n 1`.
+        rc, out = self.device.shell_nocheck(['echo', '-n', '1'])
+        self.assertEqual(rc, 0)
+        self.assertEqual(out, '1')
+
+    def test_line_endings(self):
+        """Ensure that line ending translation is not happening in the pty.
+
+        Bug: http://b/19735063
+        """
+        output = self.device.shell(['uname'])
+        self.assertEqual(output, 'Linux' + self.device.linesep)
+
+    def test_pty_logic(self):
+        """Verify PTY logic for shells.
+
+        Interactive shells should use a PTY, non-interactive should not.
+
+        Bug: http://b/21215503
+        """
+        proc = subprocess.Popen(
+                self.device.adb_cmd + ['shell'], stdin=subprocess.PIPE,
+                stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+        # [ -t 0 ] is used (rather than `tty`) to provide portability. This
+        # gives an exit code of 0 iff stdin is connected to a terminal.
+        #
+        # Closing host-side stdin doesn't currently trigger the interactive
+        # shell to exit so we need to explicitly add an exit command to
+        # close the session from the device side, and append \n to complete
+        # the interactive command.
+        result = proc.communicate('[ -t 0 ]; echo x$?; exit 0\n')[0]
+        partition = result.rpartition('x')
+        self.assertEqual(partition[1], 'x')
+        self.assertEqual(int(partition[2]), 0)
+
+        exit_code = self.device.shell_nocheck(['[ -t 0 ]'])[0]
+        self.assertEqual(exit_code, 1)
+
+
+class ArgumentEscapingTest(DeviceTest):
+    def test_shell_escaping(self):
+        """Make sure that argument escaping is somewhat sane."""
+
+        # http://b/19734868
+        # Note that this actually matches ssh(1)'s behavior --- it's
+        # converted to `sh -c echo hello; echo world` which sh interprets
+        # as `sh -c echo` (with an argument to that shell of "hello"),
+        # and then `echo world` back in the first shell.
+        result = self.device.shell(
+            shlex.split("sh -c 'echo hello; echo world'"))
+        result = result.splitlines()
+        self.assertEqual(['', 'world'], result)
+        # If you really wanted "hello" and "world", here's what you'd do:
+        result = self.device.shell(
+            shlex.split(r'echo hello\;echo world')).splitlines()
+        self.assertEqual(['hello', 'world'], result)
+
+        # http://b/15479704
+        result = self.device.shell(shlex.split("'true && echo t'")).strip()
+        self.assertEqual('t', result)
+        result = self.device.shell(
+            shlex.split("sh -c 'true && echo t'")).strip()
+        self.assertEqual('t', result)
+
+        # http://b/20564385
+        result = self.device.shell(shlex.split('FOO=a BAR=b echo t')).strip()
+        self.assertEqual('t', result)
+        result = self.device.shell(shlex.split(r'echo -n 123\;uname')).strip()
+        self.assertEqual('123Linux', result)
+
+    def test_install_argument_escaping(self):
+        """Make sure that install argument escaping works."""
+        # http://b/20323053
+        tf = tempfile.NamedTemporaryFile('wb', suffix='-text;ls;1.apk')
+        self.assertIn("-text;ls;1.apk", self.device.install(tf.name))
+
+        # http://b/3090932
+        tf = tempfile.NamedTemporaryFile('wb', suffix="-Live Hold'em.apk")
+        self.assertIn("-Live Hold'em.apk", self.device.install(tf.name))
+
+
+class RootUnrootTest(DeviceTest):
+    def _test_root(self):
+        message = self.device.root()
+        if 'adbd cannot run as root in production builds' in message:
+            return
+        self.device.wait()
+        self.assertEqual('root', self.device.shell(['id', '-un']).strip())
+
+    def _test_unroot(self):
+        self.device.unroot()
+        self.device.wait()
+        self.assertEqual('shell', self.device.shell(['id', '-un']).strip())
+
+    def test_root_unroot(self):
+        """Make sure that adb root and adb unroot work, using id(1)."""
+        if self.device.get_prop('ro.debuggable') != '1':
+            raise unittest.SkipTest('requires rootable build')
+
+        original_user = self.device.shell(['id', '-un']).strip()
+        try:
+            if original_user == 'root':
+                self._test_unroot()
+                self._test_root()
+            elif original_user == 'shell':
+                self._test_root()
+                self._test_unroot()
+        finally:
+            if original_user == 'root':
+                self.device.root()
+            else:
+                self.device.unroot()
+            self.device.wait()
+
+
+class TcpIpTest(DeviceTest):
+    def test_tcpip_failure_raises(self):
+        """adb tcpip requires a port.
+
+        Bug: http://b/22636927
+        """
+        self.assertRaises(
+            subprocess.CalledProcessError, self.device.tcpip, '')
+        self.assertRaises(
+            subprocess.CalledProcessError, self.device.tcpip, 'foo')
+
+
+class SystemPropertiesTest(DeviceTest):
+    def test_get_prop(self):
+        self.assertEqual(self.device.get_prop('init.svc.adbd'), 'running')
+
+    @requires_root
+    def test_set_prop(self):
+        prop_name = 'foo.bar'
+        self.device.shell(['setprop', prop_name, '""'])
+
+        self.device.set_prop(prop_name, 'qux')
+        self.assertEqual(
+            self.device.shell(['getprop', prop_name]).strip(), 'qux')
+
+
+def compute_md5(string):
+    hsh = hashlib.md5()
+    hsh.update(string)
+    return hsh.hexdigest()
+
+
+def get_md5_prog(device):
+    """Older platforms (pre-L) had the name md5 rather than md5sum."""
+    try:
+        device.shell(['md5sum', '/proc/uptime'])
+        return 'md5sum'
+    except subprocess.CalledProcessError:
+        return 'md5'
+
+
+class HostFile(object):
+    def __init__(self, handle, checksum):
+        self.handle = handle
+        self.checksum = checksum
+        self.full_path = handle.name
+        self.base_name = os.path.basename(self.full_path)
+
+
+class DeviceFile(object):
+    def __init__(self, checksum, full_path):
+        self.checksum = checksum
+        self.full_path = full_path
+        self.base_name = posixpath.basename(self.full_path)
+
+
+def make_random_host_files(in_dir, num_files):
+    min_size = 1 * (1 << 10)
+    max_size = 16 * (1 << 10)
+
+    files = []
+    for _ in xrange(num_files):
+        file_handle = tempfile.NamedTemporaryFile(dir=in_dir, delete=False)
+
+        size = random.randrange(min_size, max_size, 1024)
+        rand_str = os.urandom(size)
+        file_handle.write(rand_str)
+        file_handle.flush()
+        file_handle.close()
+
+        md5 = compute_md5(rand_str)
+        files.append(HostFile(file_handle, md5))
+    return files
+
+
+def make_random_device_files(device, in_dir, num_files):
+    min_size = 1 * (1 << 10)
+    max_size = 16 * (1 << 10)
+
+    files = []
+    for file_num in xrange(num_files):
+        size = random.randrange(min_size, max_size, 1024)
+
+        base_name = 'device_tmpfile' + str(file_num)
+        full_path = posixpath.join(in_dir, base_name)
+
+        device.shell(['dd', 'if=/dev/urandom', 'of={}'.format(full_path),
+                      'bs={}'.format(size), 'count=1'])
+        dev_md5, _ = device.shell([get_md5_prog(device), full_path]).split()
+
+        files.append(DeviceFile(dev_md5, full_path))
+    return files
+
+
+class FileOperationsTest(DeviceTest):
+    SCRATCH_DIR = '/data/local/tmp'
+    DEVICE_TEMP_FILE = SCRATCH_DIR + '/adb_test_file'
+    DEVICE_TEMP_DIR = SCRATCH_DIR + '/adb_test_dir'
+
+    def _test_push(self, local_file, checksum):
+        self.device.shell(['rm', '-rf', self.DEVICE_TEMP_FILE])
+        self.device.push(local=local_file, remote=self.DEVICE_TEMP_FILE)
+        dev_md5, _ = self.device.shell([get_md5_prog(self.device),
+                                       self.DEVICE_TEMP_FILE]).split()
+        self.assertEqual(checksum, dev_md5)
+        self.device.shell(['rm', '-f', self.DEVICE_TEMP_FILE])
+
+    def test_push(self):
+        """Push a randomly generated file to specified device."""
+        kbytes = 512
+        tmp = tempfile.NamedTemporaryFile(mode='wb', delete=False)
+        rand_str = os.urandom(1024 * kbytes)
+        tmp.write(rand_str)
+        tmp.close()
+        self._test_push(tmp.name, compute_md5(rand_str))
+        os.remove(tmp.name)
+
+    # TODO: write push directory test.
+
+    def _test_pull(self, remote_file, checksum):
+        tmp_write = tempfile.NamedTemporaryFile(mode='wb', delete=False)
+        tmp_write.close()
+        self.device.pull(remote=remote_file, local=tmp_write.name)
+        with open(tmp_write.name, 'rb') as tmp_read:
+            host_contents = tmp_read.read()
+            host_md5 = compute_md5(host_contents)
+        self.assertEqual(checksum, host_md5)
+        os.remove(tmp_write.name)
+
+    def test_pull(self):
+        """Pull a randomly generated file from specified device."""
+        kbytes = 512
+        self.device.shell(['rm', '-rf', self.DEVICE_TEMP_FILE])
+        cmd = ['dd', 'if=/dev/urandom',
+               'of={}'.format(self.DEVICE_TEMP_FILE), 'bs=1024',
+               'count={}'.format(kbytes)]
+        self.device.shell(cmd)
+        dev_md5, _ = self.device.shell(
+            [get_md5_prog(self.device), self.DEVICE_TEMP_FILE]).split()
+        self._test_pull(self.DEVICE_TEMP_FILE, dev_md5)
+        self.device.shell_nocheck(['rm', self.DEVICE_TEMP_FILE])
+
+    def test_pull_dir(self):
+        """Pull a randomly generated directory of files from the device."""
+        host_dir = tempfile.mkdtemp()
+        self.device.shell(['rm', '-rf', self.DEVICE_TEMP_DIR])
+        self.device.shell(['mkdir', '-p', self.DEVICE_TEMP_DIR])
+
+        # Populate device directory with random files.
+        temp_files = make_random_device_files(
+            self.device, in_dir=self.DEVICE_TEMP_DIR, num_files=32)
+
+        self.device.pull(remote=self.DEVICE_TEMP_DIR, local=host_dir)
+
+        for temp_file in temp_files:
+            host_path = os.path.join(host_dir, temp_file.base_name)
+            with open(host_path, 'rb') as host_file:
+                host_md5 = compute_md5(host_file.read())
+                self.assertEqual(host_md5, temp_file.checksum)
+
+        self.device.shell(['rm', '-rf', self.DEVICE_TEMP_DIR])
+        if host_dir is not None:
+            shutil.rmtree(host_dir)
+
+    def test_sync(self):
+        """Sync a randomly generated directory of files to specified device."""
+        base_dir = tempfile.mkdtemp()
+
+        # Create mirror device directory hierarchy within base_dir.
+        full_dir_path = base_dir + self.DEVICE_TEMP_DIR
+        os.makedirs(full_dir_path)
+
+        # Create 32 random files within the host mirror.
+        temp_files = make_random_host_files(in_dir=full_dir_path, num_files=32)
+
+        # Clean up any trash on the device.
+        device = adb.get_device(product=base_dir)
+        device.shell(['rm', '-rf', self.DEVICE_TEMP_DIR])
+
+        device.sync('data')
+
+        # Confirm that every file on the device mirrors that on the host.
+        for temp_file in temp_files:
+            device_full_path = posixpath.join(self.DEVICE_TEMP_DIR,
+                                              temp_file.base_name)
+            dev_md5, _ = device.shell(
+                [get_md5_prog(self.device), device_full_path]).split()
+            self.assertEqual(temp_file.checksum, dev_md5)
+
+        self.device.shell(['rm', '-rf', self.DEVICE_TEMP_DIR])
+        shutil.rmtree(base_dir + self.DEVICE_TEMP_DIR)
+
+    def test_unicode_paths(self):
+        """Ensure that we can support non-ASCII paths, even on Windows."""
+        name = u'로보카 폴리'.encode('utf-8')
+
+        ## push.
+        tf = tempfile.NamedTemporaryFile('wb', suffix=name)
+        self.device.push(tf.name, '/data/local/tmp/adb-test-{}'.format(name))
+        self.device.shell(['rm', '-f', '/data/local/tmp/adb-test-*'])
+
+        # pull.
+        cmd = ['touch', '"/data/local/tmp/adb-test-{}"'.format(name)]
+        self.device.shell(cmd)
+
+        tf = tempfile.NamedTemporaryFile('wb', suffix=name)
+        self.device.pull('/data/local/tmp/adb-test-{}'.format(name), tf.name)
+
+
+def main():
+    random.seed(0)
+    if len(adb.get_devices()) > 0:
+        suite = unittest.TestLoader().loadTestsFromName(__name__)
+        unittest.TextTestRunner(verbosity=3).run(suite)
+    else:
+        print('Test suite must be run with attached devices')
+
+
+if __name__ == '__main__':
+    main()
diff --git a/adb/test_track_devices.cpp b/adb/test_track_devices.cpp
index f78daeb..6f658f6 100644
--- a/adb/test_track_devices.cpp
+++ b/adb/test_track_devices.cpp
@@ -1,12 +1,13 @@
 // TODO: replace this with a shell/python script.
 
 /* a simple test program, connects to ADB server, and opens a track-devices session */
-#include <netdb.h>
-#include <sys/socket.h>
-#include <stdio.h>
-#include <stdlib.h>
 #include <errno.h>
 #include <memory.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/socket.h>
+#include <unistd.h>
 
 #include <base/file.h>
 
diff --git a/adb/tests/test_adb.py b/adb/tests/test_adb.py
deleted file mode 100755
index 730f668..0000000
--- a/adb/tests/test_adb.py
+++ /dev/null
@@ -1,469 +0,0 @@
-#!/usr/bin/env python2
-"""Simple conformance test for adb.
-
-This script will use the available adb in path and run simple
-tests that attempt to touch all accessible attached devices.
-"""
-import hashlib
-import os
-import pipes
-import posixpath
-import random
-import re
-import shlex
-import subprocess
-import sys
-import tempfile
-import unittest
-
-
-def trace(cmd):
-    """Print debug message if tracing enabled."""
-    if False:
-        print >> sys.stderr, cmd
-
-
-def call(cmd_str):
-    """Run process and return output tuple (stdout, stderr, ret code)."""
-    trace(cmd_str)
-    process = subprocess.Popen(shlex.split(cmd_str),
-                               stdout=subprocess.PIPE,
-                               stderr=subprocess.PIPE)
-    stdout, stderr = process.communicate()
-    return stdout, stderr, process.returncode
-
-
-def call_combined(cmd_str):
-    """Run process and return output tuple (stdout+stderr, ret code)."""
-    trace(cmd_str)
-    process = subprocess.Popen(shlex.split(cmd_str),
-                               stdout=subprocess.PIPE,
-                               stderr=subprocess.STDOUT)
-    stdout, _ = process.communicate()
-    return stdout, process.returncode
-
-
-def call_checked(cmd_str):
-    """Run process and get stdout+stderr, raise an exception on trouble."""
-    trace(cmd_str)
-    return subprocess.check_output(shlex.split(cmd_str),
-                                   stderr=subprocess.STDOUT)
-
-
-def call_checked_list(cmd_str):
-    return call_checked(cmd_str).split('\n')
-
-
-def call_checked_list_skip(cmd_str):
-    out_list = call_checked_list(cmd_str)
-
-    def is_init_line(line):
-        if (len(line) >= 3) and (line[0] == "*") and (line[-2] == "*"):
-            return True
-        else:
-            return False
-
-    return [line for line in out_list if not is_init_line(line)]
-
-
-def get_device_list():
-    output = call_checked_list_skip("adb devices")
-    dev_list = []
-    for line in output[1:]:
-        if line.strip() == "":
-            continue
-        device, _ = line.split()
-        dev_list.append(device)
-    return dev_list
-
-
-def get_attached_device_count():
-    return len(get_device_list())
-
-
-def compute_md5(string):
-    hsh = hashlib.md5()
-    hsh.update(string)
-    return hsh.hexdigest()
-
-
-class HostFile(object):
-    def __init__(self, handle, md5):
-        self.handle = handle
-        self.md5 = md5
-        self.full_path = handle.name
-        self.base_name = os.path.basename(self.full_path)
-
-
-class DeviceFile(object):
-    def __init__(self, md5, full_path):
-        self.md5 = md5
-        self.full_path = full_path
-        self.base_name = posixpath.basename(self.full_path)
-
-
-def make_random_host_files(in_dir, num_files, rand_size=True):
-    files = {}
-    min_size = 1 * (1 << 10)
-    max_size = 16 * (1 << 10)
-    fixed_size = min_size
-
-    for _ in range(num_files):
-        file_handle = tempfile.NamedTemporaryFile(dir=in_dir, delete=False)
-
-        if rand_size:
-            size = random.randrange(min_size, max_size, 1024)
-        else:
-            size = fixed_size
-        rand_str = os.urandom(size)
-        file_handle.write(rand_str)
-        file_handle.flush()
-        file_handle.close()
-
-        md5 = compute_md5(rand_str)
-        files[file_handle.name] = HostFile(file_handle, md5)
-    return files
-
-
-def make_random_device_files(adb, in_dir, num_files, rand_size=True):
-    files = {}
-    min_size = 1 * (1 << 10)
-    max_size = 16 * (1 << 10)
-    fixed_size = min_size
-
-    for i in range(num_files):
-        if rand_size:
-            size = random.randrange(min_size, max_size, 1024)
-        else:
-            size = fixed_size
-
-        base_name = "device_tmpfile" + str(i)
-        full_path = in_dir + "/" + base_name
-
-        adb.shell("dd if=/dev/urandom of={} bs={} count=1".format(full_path,
-                                                                  size))
-        dev_md5, _ = adb.shell("md5sum {}".format(full_path)).split()
-
-        files[full_path] = DeviceFile(dev_md5, full_path)
-    return files
-
-
-class AdbWrapper(object):
-    """Convenience wrapper object for the adb command."""
-    def __init__(self, device=None, out_dir=None):
-        self.device = device
-        self.out_dir = out_dir
-        self.adb_cmd = "adb "
-        if self.device:
-            self.adb_cmd += "-s {} ".format(pipes.quote(device))
-        if self.out_dir:
-            self.adb_cmd += "-p {} ".format(pipes.quote(out_dir))
-
-    def shell(self, cmd):
-        return call_checked(self.adb_cmd + "shell " + cmd)
-
-    def shell_nocheck(self, cmd):
-        return call_combined(self.adb_cmd + "shell " + cmd)
-
-    def install(self, filename):
-        return call_checked(
-            self.adb_cmd + "install {}".format(pipes.quote(filename)))
-
-    def push(self, local, remote):
-        return call_checked(self.adb_cmd + "push {} {}".format(
-            pipes.quote(local), pipes.quote(remote)))
-
-    def pull(self, remote, local):
-        return call_checked(self.adb_cmd + "pull {} {}".format(
-            pipes.quote(remote), pipes.quote(local)))
-
-    def sync(self, directory=""):
-        return call_checked(self.adb_cmd + "sync {}".format(
-            pipes.quote(directory) if directory else directory))
-
-    def forward(self, local, remote):
-        return call_checked(self.adb_cmd + "forward {} {}".format(local,
-                                                                  remote))
-
-    def tcpip(self, port):
-        return call_checked(self.adb_cmd + "tcpip {}".format(port))
-
-    def usb(self):
-        return call_checked(self.adb_cmd + "usb")
-
-    def root(self):
-        return call_checked(self.adb_cmd + "root")
-
-    def unroot(self):
-        return call_checked(self.adb_cmd + "unroot")
-
-    def forward_remove(self, local):
-        return call_checked(self.adb_cmd + "forward --remove {}".format(local))
-
-    def forward_remove_all(self):
-        return call_checked(self.adb_cmd + "forward --remove-all")
-
-    def connect(self, host):
-        return call_checked(self.adb_cmd + "connect {}".format(host))
-
-    def disconnect(self, host):
-        return call_checked(self.adb_cmd + "disconnect {}".format(host))
-
-    def reverse(self, remote, local):
-        return call_checked(self.adb_cmd + "reverse {} {}".format(remote,
-                                                                  local))
-
-    def reverse_remove_all(self):
-        return call_checked(self.adb_cmd + "reverse --remove-all")
-
-    def reverse_remove(self, remote):
-        return call_checked(
-            self.adb_cmd + "reverse --remove {}".format(remote))
-
-    def wait(self):
-        return call_checked(self.adb_cmd + "wait-for-device")
-
-
-class AdbBasic(unittest.TestCase):
-    def test_shell(self):
-        """Check that we can at least cat a file."""
-        adb = AdbWrapper()
-        out = adb.shell("cat /proc/uptime")
-        self.assertEqual(len(out.split()), 2)
-        self.assertGreater(float(out.split()[0]), 0.0)
-        self.assertGreater(float(out.split()[1]), 0.0)
-
-    def test_help(self):
-        """Make sure we get _something_ out of help."""
-        out = call_checked("adb help")
-        self.assertTrue(len(out) > 0)
-
-    def test_version(self):
-        """Get a version number out of the output of adb."""
-        out = call_checked("adb version").split()
-        version_num = False
-        for item in out:
-            if re.match(r"[\d+\.]*\d", item):
-                version_num = True
-        self.assertTrue(version_num)
-
-    def _test_root(self):
-        adb = AdbWrapper()
-        if "adbd cannot run as root in production builds" in adb.root():
-            return
-        adb.wait()
-        self.assertEqual("root", adb.shell("id -un").strip())
-
-    def _test_unroot(self):
-        adb = AdbWrapper()
-        adb.unroot()
-        adb.wait()
-        self.assertEqual("shell", adb.shell("id -un").strip())
-
-    def test_root_unroot(self):
-        """Make sure that adb root and adb unroot work, using id(1)."""
-        adb = AdbWrapper()
-        original_user = adb.shell("id -un").strip()
-        try:
-            if original_user == "root":
-                self._test_unroot()
-                self._test_root()
-            elif original_user == "shell":
-                self._test_root()
-                self._test_unroot()
-        finally:
-            if original_user == "root":
-                adb.root()
-            else:
-                adb.unroot()
-            adb.wait()
-
-    def test_argument_escaping(self):
-        """Make sure that argument escaping is somewhat sane."""
-        adb = AdbWrapper()
-
-        # http://b/19734868
-        # Note that this actually matches ssh(1)'s behavior --- it's
-        # converted to "sh -c echo hello; echo world" which sh interprets
-        # as "sh -c echo" (with an argument to that shell of "hello"),
-        # and then "echo world" back in the first shell.
-        result = adb.shell("sh -c 'echo hello; echo world'").splitlines()
-        self.assertEqual(["", "world"], result)
-        # If you really wanted "hello" and "world", here's what you'd do:
-        result = adb.shell(r"echo hello\;echo world").splitlines()
-        self.assertEqual(["hello", "world"], result)
-
-        # http://b/15479704
-        self.assertEqual('t', adb.shell("'true && echo t'").strip())
-        self.assertEqual('t', adb.shell("sh -c 'true && echo t'").strip())
-
-        # http://b/20564385
-        self.assertEqual('t', adb.shell("FOO=a BAR=b echo t").strip())
-        self.assertEqual('123Linux', adb.shell(r"echo -n 123\;uname").strip())
-
-    def test_install_argument_escaping(self):
-        """Make sure that install argument escaping works."""
-        adb = AdbWrapper()
-
-        # http://b/20323053
-        tf = tempfile.NamedTemporaryFile("wb", suffix="-text;ls;1.apk")
-        self.assertIn("-text;ls;1.apk", adb.install(tf.name))
-
-        # http://b/3090932
-        tf = tempfile.NamedTemporaryFile("wb", suffix="-Live Hold'em.apk")
-        self.assertIn("-Live Hold'em.apk", adb.install(tf.name))
-
-    def test_line_endings(self):
-        """Ensure that line ending translation is not happening in the pty.
-
-        Bug: http://b/19735063
-        """
-        output = AdbWrapper().shell("uname")
-        if sys.platform == 'win32':
-            # adb.exe running on Windows does translation to the Windows \r\n
-            # convention, so we should expect those chars.
-            self.assertEqual(output, "Linux\r\n")
-        else:
-            self.assertEqual(output, "Linux\n")
-
-
-class AdbFile(unittest.TestCase):
-    SCRATCH_DIR = "/data/local/tmp"
-    DEVICE_TEMP_FILE = SCRATCH_DIR + "/adb_test_file"
-    DEVICE_TEMP_DIR = SCRATCH_DIR + "/adb_test_dir"
-
-    def test_push(self):
-        """Push a randomly generated file to specified device."""
-        kbytes = 512
-        adb = AdbWrapper()
-        with tempfile.NamedTemporaryFile(mode="wb", delete=False) as tmp:
-            try:
-                rand_str = os.urandom(1024 * kbytes)
-                tmp.write(rand_str)
-                tmp.flush()
-                tmp.close()
-
-                host_md5 = compute_md5(rand_str)
-                adb.shell_nocheck("rm -r {}".format(AdbFile.DEVICE_TEMP_FILE))
-                try:
-                    adb.push(local=tmp.name, remote=AdbFile.DEVICE_TEMP_FILE)
-                    dev_md5, _ = adb.shell(
-                        "md5sum {}".format(AdbFile.DEVICE_TEMP_FILE)).split()
-                    self.assertEqual(host_md5, dev_md5)
-                finally:
-                    adb.shell_nocheck("rm {}".format(AdbFile.DEVICE_TEMP_FILE))
-            finally:
-                os.remove(tmp.name)
-
-    # TODO: write push directory test.
-
-    def test_pull(self):
-        """Pull a randomly generated file from specified device."""
-        kbytes = 512
-        adb = AdbWrapper()
-        adb.shell_nocheck("rm -r {}".format(AdbFile.DEVICE_TEMP_FILE))
-        try:
-            adb.shell("dd if=/dev/urandom of={} bs=1024 count={}".format(
-                AdbFile.DEVICE_TEMP_FILE, kbytes))
-            dev_md5, _ = adb.shell(
-                "md5sum {}".format(AdbFile.DEVICE_TEMP_FILE)).split()
-
-            with tempfile.NamedTemporaryFile(mode="wb", delete=False) \
-                as tmp_write:
-                try:
-                    tmp_write.close()
-                    adb.pull(remote=AdbFile.DEVICE_TEMP_FILE,
-                             local=tmp_write.name)
-                    with open(tmp_write.name, "rb") as tmp_read:
-                        host_contents = tmp_read.read()
-                        host_md5 = compute_md5(host_contents)
-                    self.assertEqual(dev_md5, host_md5)
-                finally:
-                    os.remove(tmp_write.name)
-        finally:
-            adb.shell_nocheck("rm {}".format(AdbFile.DEVICE_TEMP_FILE))
-
-    def test_pull_dir(self):
-        """Pull a randomly generated directory of files from the device."""
-        adb = AdbWrapper()
-        temp_files = {}
-        host_dir = None
-        try:
-            # create temporary host directory
-            host_dir = tempfile.mkdtemp()
-
-            # create temporary dir on device
-            adb.shell_nocheck("rm -r {}".format(AdbFile.DEVICE_TEMP_DIR))
-            adb.shell("mkdir -p {}".format(AdbFile.DEVICE_TEMP_DIR))
-
-            # populate device dir with random files
-            temp_files = make_random_device_files(
-                adb, in_dir=AdbFile.DEVICE_TEMP_DIR, num_files=32)
-
-            adb.pull(remote=AdbFile.DEVICE_TEMP_DIR, local=host_dir)
-
-            for device_full_path in temp_files:
-                host_path = os.path.join(
-                    host_dir, temp_files[device_full_path].base_name)
-                with open(host_path, "rb") as host_file:
-                    host_md5 = compute_md5(host_file.read())
-                    self.assertEqual(host_md5,
-                                     temp_files[device_full_path].md5)
-        finally:
-            for dev_file in temp_files.values():
-                host_path = os.path.join(host_dir, dev_file.base_name)
-                os.remove(host_path)
-            adb.shell_nocheck("rm -r {}".format(AdbFile.DEVICE_TEMP_DIR))
-            if host_dir:
-                os.removedirs(host_dir)
-
-    def test_sync(self):
-        """Sync a randomly generated directory of files to specified device."""
-        try:
-            adb = AdbWrapper()
-            temp_files = {}
-
-            # create temporary host directory
-            base_dir = tempfile.mkdtemp()
-
-            # create mirror device directory hierarchy within base_dir
-            full_dir_path = base_dir + AdbFile.DEVICE_TEMP_DIR
-            os.makedirs(full_dir_path)
-
-            # create 32 random files within the host mirror
-            temp_files = make_random_host_files(in_dir=full_dir_path,
-                                                num_files=32)
-
-            # clean up any trash on the device
-            adb = AdbWrapper(out_dir=base_dir)
-            adb.shell_nocheck("rm -r {}".format(AdbFile.DEVICE_TEMP_DIR))
-
-            # issue the sync
-            adb.sync("data")
-
-            # confirm that every file on the device mirrors that on the host
-            for host_full_path in temp_files.keys():
-                device_full_path = posixpath.join(
-                    AdbFile.DEVICE_TEMP_DIR,
-                    temp_files[host_full_path].base_name)
-                dev_md5, _ = adb.shell(
-                    "md5sum {}".format(device_full_path)).split()
-                self.assertEqual(temp_files[host_full_path].md5, dev_md5)
-
-        finally:
-            adb.shell_nocheck("rm -r {}".format(AdbFile.DEVICE_TEMP_DIR))
-            if temp_files:
-                for tf in temp_files.values():
-                    os.remove(tf.full_path)
-            if base_dir:
-                os.removedirs(base_dir + AdbFile.DEVICE_TEMP_DIR)
-
-
-if __name__ == '__main__':
-    random.seed(0)
-    dev_count = get_attached_device_count()
-    if dev_count:
-        suite = unittest.TestLoader().loadTestsFromName(__name__)
-        unittest.TextTestRunner(verbosity=3).run(suite)
-    else:
-        print "Test suite must be run with attached devices"
diff --git a/adb/transport.cpp b/adb/transport.cpp
index 274449b..4a273c4 100644
--- a/adb/transport.cpp
+++ b/adb/transport.cpp
@@ -126,19 +126,18 @@
 static int
 read_packet(int  fd, const char* name, apacket** ppacket)
 {
-    char *p = (char*)ppacket;  /* really read a packet address */
-    int   r;
-    int   len = sizeof(*ppacket);
-    char  buff[8];
+    char buff[8];
     if (!name) {
         snprintf(buff, sizeof buff, "fd=%d", fd);
         name = buff;
     }
+    char* p = reinterpret_cast<char*>(ppacket);  /* really read a packet address */
+    int len = sizeof(apacket*);
     while(len > 0) {
-        r = adb_read(fd, p, len);
+        int r = adb_read(fd, p, len);
         if(r > 0) {
             len -= r;
-            p   += r;
+            p += r;
         } else {
             D("%s: read_packet (fd=%d), error ret=%d errno=%d: %s\n", name, fd, r, errno, strerror(errno));
             if((r < 0) && (errno == EINTR)) continue;
@@ -155,20 +154,18 @@
 static int
 write_packet(int  fd, const char* name, apacket** ppacket)
 {
-    char *p = (char*) ppacket;  /* we really write the packet address */
-    int r, len = sizeof(ppacket);
     char buff[8];
     if (!name) {
         snprintf(buff, sizeof buff, "fd=%d", fd);
         name = buff;
     }
-
     if (ADB_TRACING) {
         dump_packet(name, "to remote", *ppacket);
     }
-    len = sizeof(ppacket);
+    char* p = reinterpret_cast<char*>(ppacket);  /* we really write the packet address */
+    int len = sizeof(apacket*);
     while(len > 0) {
-        r = adb_write(fd, p, len);
+        int r = adb_write(fd, p, len);
         if(r > 0) {
             len -= r;
             p += r;
@@ -283,7 +280,7 @@
     p->msg.magic = A_SYNC ^ 0xffffffff;
     if(write_packet(t->fd, t->serial, &p)) {
         put_apacket(p);
-        D("%s: failed to write SYNC apacket to transport", t->serial);
+        D("%s: failed to write SYNC apacket to transport\n", t->serial);
     }
 
 oops:
@@ -579,7 +576,7 @@
             fatal_errno("cannot open transport socketpair");
         }
 
-        D("transport: %s socketpair: (%d,%d) starting", t->serial, s[0], s[1]);
+        D("transport: %s socketpair: (%d,%d) starting\n", t->serial, s[0], s[1]);
 
         t->transport_socket = s[0];
         t->fd = s[1];
@@ -617,7 +614,7 @@
     if(adb_socketpair(s)){
         fatal_errno("cannot open transport registration socketpair");
     }
-    D("socketpair: (%d,%d)", s[0], s[1]);
+    D("socketpair: (%d,%d)\n", s[0], s[1]);
 
     transport_registration_send = s[0];
     transport_registration_recv = s[1];
@@ -789,9 +786,10 @@
         if (result->connection_state == kCsUnauthorized) {
             *error_out = "device unauthorized.\n";
             char* ADB_VENDOR_KEYS = getenv("ADB_VENDOR_KEYS");
-            *error_out += "This adbd's $ADB_VENDOR_KEYS is ";
+            *error_out += "This adb server's $ADB_VENDOR_KEYS is ";
             *error_out += ADB_VENDOR_KEYS ? ADB_VENDOR_KEYS : "not set";
-            *error_out += "; try 'adb kill-server' if that seems wrong.\n";
+            *error_out += "\n";
+            *error_out += "Try 'adb kill-server' if that seems wrong.\n";
             *error_out += "Otherwise check for a confirmation dialog on your device.";
             result = NULL;
         }
@@ -834,6 +832,19 @@
     }
 }
 
+void atransport::update_version(int version, size_t payload) {
+    protocol_version = std::min(version, A_VERSION);
+    max_payload = std::min(payload, MAX_PAYLOAD);
+}
+
+int atransport::get_protocol_version() const {
+    return protocol_version;
+}
+
+size_t atransport::get_max_payload() const {
+    return max_payload;
+}
+
 #if ADB_HOST
 
 static void append_transport_info(std::string* result, const char* key,
@@ -1019,15 +1030,16 @@
 #undef TRACE_TAG
 #define TRACE_TAG  TRACE_RWX
 
-int check_header(apacket *p)
+int check_header(apacket *p, atransport *t)
 {
     if(p->msg.magic != (p->msg.command ^ 0xffffffff)) {
         D("check_header(): invalid magic\n");
         return -1;
     }
 
-    if(p->msg.data_length > MAX_PAYLOAD) {
-        D("check_header(): %d > MAX_PAYLOAD\n", p->msg.data_length);
+    if(p->msg.data_length > t->get_max_payload()) {
+        D("check_header(): %u > atransport::max_payload = %zu\n",
+            p->msg.data_length, t->get_max_payload());
         return -1;
     }
 
diff --git a/adb/transport.h b/adb/transport.h
index 538f63e..edcc99d 100644
--- a/adb/transport.h
+++ b/adb/transport.h
@@ -57,7 +57,7 @@
 void unregister_transport(atransport* t);
 void unregister_all_tcp_transports();
 
-int check_header(apacket* p);
+int check_header(apacket* p, atransport* t);
 int check_data(apacket* p);
 
 /* for MacOS X cleanup */
diff --git a/adb/transport_local.cpp b/adb/transport_local.cpp
index 97e3d50..6a17497 100644
--- a/adb/transport_local.cpp
+++ b/adb/transport_local.cpp
@@ -26,6 +26,7 @@
 #include <sys/types.h>
 
 #include <base/stringprintf.h>
+#include <cutils/sockets.h>
 
 #if !ADB_HOST
 #include "cutils/properties.h"
@@ -33,6 +34,7 @@
 
 #include "adb.h"
 #include "adb_io.h"
+#include "adb_utils.h"
 
 #if ADB_HOST
 /* we keep a list of opened transports. The atransport struct knows to which
@@ -53,7 +55,7 @@
         return -1;
     }
 
-    if(check_header(p)) {
+    if(check_header(p, t)) {
         D("bad header: terminated (data)\n");
         return -1;
     }
@@ -83,23 +85,26 @@
     return 0;
 }
 
-
-int local_connect(int port) {
-    return local_connect_arbitrary_ports(port-1, port);
+void local_connect(int port) {
+    std::string dummy;
+    local_connect_arbitrary_ports(port-1, port, &dummy);
 }
 
-int local_connect_arbitrary_ports(int console_port, int adb_port)
-{
-    int  fd = -1;
+int local_connect_arbitrary_ports(int console_port, int adb_port, std::string* error) {
+    int fd = -1;
 
 #if ADB_HOST
+    if (find_emulator_transport_by_adb_port(adb_port) != nullptr) {
+        return -1;
+    }
+
     const char *host = getenv("ADBHOST");
     if (host) {
-        fd = socket_network_client(host, adb_port, SOCK_STREAM);
+        fd = network_connect(host, adb_port, SOCK_STREAM, 0, error);
     }
 #endif
     if (fd < 0) {
-        fd = socket_loopback_client(adb_port, SOCK_STREAM);
+        fd = network_loopback_client(adb_port, SOCK_STREAM, error);
     }
 
     if (fd >= 0) {
@@ -107,31 +112,33 @@
         close_on_exec(fd);
         disable_tcp_nagle(fd);
         std::string serial = android::base::StringPrintf("emulator-%d", console_port);
-        register_socket_transport(fd, serial.c_str(), adb_port, 1);
-        return 0;
+        if (register_socket_transport(fd, serial.c_str(), adb_port, 1) == 0) {
+            return 0;
+        }
+        adb_close(fd);
     }
     return -1;
 }
 
-
+#if ADB_HOST
 static void *client_socket_thread(void *x)
 {
-#if ADB_HOST
-    int  port  = DEFAULT_ADB_LOCAL_TRANSPORT_PORT;
-    int  count = ADB_LOCAL_TRANSPORT_MAX;
-
     D("transport: client_socket_thread() starting\n");
+    while (true) {
+        int port = DEFAULT_ADB_LOCAL_TRANSPORT_PORT;
+        int count = ADB_LOCAL_TRANSPORT_MAX;
 
-    /* try to connect to any number of running emulator instances     */
-    /* this is only done when ADB starts up. later, each new emulator */
-    /* will send a message to ADB to indicate that is is starting up  */
-    for ( ; count > 0; count--, port += 2 ) {
-        (void) local_connect(port);
+        // Try to connect to any number of running emulator instances.
+        for ( ; count > 0; count--, port += 2 ) {
+            local_connect(port);
+        }
+        sleep(1);
     }
-#endif
     return 0;
 }
 
+#else // ADB_HOST
+
 static void *server_socket_thread(void * arg)
 {
     int serverfd, fd;
@@ -143,9 +150,10 @@
     serverfd = -1;
     for(;;) {
         if(serverfd == -1) {
-            serverfd = socket_inaddr_any_server(port, SOCK_STREAM);
+            std::string error;
+            serverfd = network_inaddr_any_server(port, SOCK_STREAM, &error);
             if(serverfd < 0) {
-                D("server: cannot bind socket yet: %s\n", strerror(errno));
+                D("server: cannot bind socket yet: %s\n", error.c_str());
                 adb_sleep_ms(1000);
                 continue;
             }
@@ -167,7 +175,6 @@
 }
 
 /* This is relevant only for ADB daemon running inside the emulator. */
-#if !ADB_HOST
 /*
  * Redefine open and write for qemu_pipe.h that contains inlined references
  * to those routines. We will redifine them back after qemu_pipe.h inclusion.
@@ -279,31 +286,29 @@
 void local_init(int port)
 {
     void* (*func)(void *);
+    const char* debug_name = "";
 
-    if(HOST) {
-        func = client_socket_thread;
-    } else {
 #if ADB_HOST
-        func = server_socket_thread;
+    func = client_socket_thread;
+    debug_name = "client";
 #else
-        /* For the adbd daemon in the system image we need to distinguish
-         * between the device, and the emulator. */
-        char is_qemu[PROPERTY_VALUE_MAX];
-        property_get("ro.kernel.qemu", is_qemu, "");
-        if (!strcmp(is_qemu, "1")) {
-            /* Running inside the emulator: use QEMUD pipe as the transport. */
-            func = qemu_socket_thread;
-        } else {
-            /* Running inside the device: use TCP socket as the transport. */
-            func = server_socket_thread;
-        }
-#endif // !ADB_HOST
+    /* For the adbd daemon in the system image we need to distinguish
+     * between the device, and the emulator. */
+    char is_qemu[PROPERTY_VALUE_MAX];
+    property_get("ro.kernel.qemu", is_qemu, "");
+    if (!strcmp(is_qemu, "1")) {
+        /* Running inside the emulator: use QEMUD pipe as the transport. */
+        func = qemu_socket_thread;
+    } else {
+        /* Running inside the device: use TCP socket as the transport. */
+        func = server_socket_thread;
     }
+    debug_name = "server";
+#endif // !ADB_HOST
 
-    D("transport: local %s init\n", HOST ? "client" : "server");
-
+    D("transport: local %s init\n", debug_name);
     if (!adb_thread_create(func, (void *) (uintptr_t) port)) {
-        fatal_errno("cannot create local socket %s thread", HOST ? "client" : "server");
+        fatal_errno("cannot create local socket %s thread", debug_name);
     }
 }
 
@@ -315,17 +320,15 @@
     adb_close(fd);
 
 #if ADB_HOST
-    if(HOST) {
-        int  nn;
-        adb_mutex_lock( &local_transports_lock );
-        for (nn = 0; nn < ADB_LOCAL_TRANSPORT_MAX; nn++) {
-            if (local_transports[nn] == t) {
-                local_transports[nn] = NULL;
-                break;
-            }
+    int  nn;
+    adb_mutex_lock( &local_transports_lock );
+    for (nn = 0; nn < ADB_LOCAL_TRANSPORT_MAX; nn++) {
+        if (local_transports[nn] == t) {
+            local_transports[nn] = NULL;
+            break;
         }
-        adb_mutex_unlock( &local_transports_lock );
     }
+    adb_mutex_unlock( &local_transports_lock );
 #endif
 }
 
@@ -396,7 +399,7 @@
     t->adb_port = 0;
 
 #if ADB_HOST
-    if (HOST && local) {
+    if (local) {
         adb_mutex_lock( &local_transports_lock );
         {
             t->adb_port = adb_port;
diff --git a/adb/transport_test.cpp b/adb/transport_test.cpp
index 4b74adf..49deb73 100644
--- a/adb/transport_test.cpp
+++ b/adb/transport_test.cpp
@@ -63,6 +63,27 @@
     }
 };
 
+class TransportSetup {
+public:
+  TransportSetup() {
+#ifdef _WIN32
+    // Use extern instead of including sysdeps.h which brings in various macros
+    // that conflict with APIs used in this file.
+    extern void adb_sysdeps_init(void);
+    adb_sysdeps_init();
+#else
+    // adb_sysdeps_init() is an inline function that we cannot link against.
+#endif
+  }
+};
+
+// Static initializer will call adb_sysdeps_init() before main() to initialize
+// the transport mutex before it is used in the tests. Alternatives would be to
+// use __attribute__((constructor)) here or to use that or a static initializer
+// for adb_sysdeps_init() itself in sysdeps_win32.cpp (caveats of unclear
+// init order), or to use a test fixture whose SetUp() could do the init once.
+static TransportSetup g_TransportSetup;
+
 TEST(transport, kick_transport) {
   TestTransport t;
 
diff --git a/adb/transport_usb.cpp b/adb/transport_usb.cpp
index eb3454d..96ccdad 100644
--- a/adb/transport_usb.cpp
+++ b/adb/transport_usb.cpp
@@ -32,7 +32,7 @@
         return -1;
     }
 
-    if(check_header(p)) {
+    if(check_header(p, t)) {
         D("remote usb: check_header failed\n");
         return -1;
     }
@@ -91,12 +91,6 @@
     t->connection_state = state;
     t->type = kTransportUsb;
     t->usb = h;
-
-#if ADB_HOST
-    HOST = 1;
-#else
-    HOST = 0;
-#endif
 }
 
 #if ADB_HOST
diff --git a/adb/usb_linux.cpp b/adb/usb_linux.cpp
index c6f712b..dd22712 100644
--- a/adb/usb_linux.cpp
+++ b/adb/usb_linux.cpp
@@ -22,6 +22,7 @@
 #include <dirent.h>
 #include <errno.h>
 #include <fcntl.h>
+#include <linux/usb/ch9.h>
 #include <linux/usbdevice_fs.h>
 #include <linux/version.h>
 #include <stdio.h>
@@ -31,7 +32,12 @@
 #include <sys/time.h>
 #include <sys/types.h>
 #include <unistd.h>
-#include <linux/usb/ch9.h>
+
+#include <chrono>
+#include <condition_variable>
+#include <list>
+#include <mutex>
+#include <string>
 
 #include <base/file.h>
 #include <base/stringprintf.h>
@@ -40,110 +46,92 @@
 #include "adb.h"
 #include "transport.h"
 
+using namespace std::literals;
+
 /* usb scan debugging is waaaay too verbose */
 #define DBGX(x...)
 
-ADB_MUTEX_DEFINE( usb_lock );
+struct usb_handle {
+    ~usb_handle() {
+      if (fd != -1) unix_close(fd);
+    }
 
-struct usb_handle
-{
-    usb_handle *prev;
-    usb_handle *next;
-
-    char fname[64];
-    int desc;
+    std::string path;
+    int fd = -1;
     unsigned char ep_in;
     unsigned char ep_out;
 
     unsigned zero_mask;
-    unsigned writeable;
+    unsigned writeable = 1;
 
-    struct usbdevfs_urb urb_in;
-    struct usbdevfs_urb urb_out;
+    usbdevfs_urb urb_in;
+    usbdevfs_urb urb_out;
 
-    int urb_in_busy;
-    int urb_out_busy;
-    int dead;
+    bool urb_in_busy = false;
+    bool urb_out_busy = false;
+    bool dead = false;
 
-    adb_cond_t notify;
-    adb_mutex_t lock;
+    std::condition_variable cv;
+    std::mutex mutex;
 
     // for garbage collecting disconnected devices
-    int mark;
+    bool mark;
 
     // ID of thread currently in REAPURB
-    pthread_t reaper_thread;
+    pthread_t reaper_thread = 0;
 };
 
-static usb_handle handle_list = {
-    .prev = &handle_list,
-    .next = &handle_list,
-};
+static std::mutex g_usb_handles_mutex;
+static std::list<usb_handle*> g_usb_handles;
 
-static int known_device(const char *dev_name)
-{
-    usb_handle *usb;
-
-    adb_mutex_lock(&usb_lock);
-    for(usb = handle_list.next; usb != &handle_list; usb = usb->next){
-        if(!strcmp(usb->fname, dev_name)) {
+static int is_known_device(const char* dev_name) {
+    std::lock_guard<std::mutex> lock(g_usb_handles_mutex);
+    for (usb_handle* usb : g_usb_handles) {
+        if (usb->path == dev_name) {
             // set mark flag to indicate this device is still alive
-            usb->mark = 1;
-            adb_mutex_unlock(&usb_lock);
+            usb->mark = true;
             return 1;
         }
     }
-    adb_mutex_unlock(&usb_lock);
     return 0;
 }
 
-static void kick_disconnected_devices()
-{
-    usb_handle *usb;
-
-    adb_mutex_lock(&usb_lock);
+static void kick_disconnected_devices() {
+    std::lock_guard<std::mutex> lock(g_usb_handles_mutex);
     // kick any devices in the device list that were not found in the device scan
-    for(usb = handle_list.next; usb != &handle_list; usb = usb->next){
-        if (usb->mark == 0) {
+    for (usb_handle* usb : g_usb_handles) {
+        if (!usb->mark) {
             usb_kick(usb);
         } else {
-            usb->mark = 0;
+            usb->mark = false;
         }
     }
-    adb_mutex_unlock(&usb_lock);
-
 }
 
-static inline int badname(const char *name)
-{
-    while(*name) {
-        if(!isdigit(*name++)) return 1;
+static inline bool contains_non_digit(const char* name) {
+    while (*name) {
+        if (!isdigit(*name++)) return true;
     }
-    return 0;
+    return false;
 }
 
-static void find_usb_device(const char *base,
+static void find_usb_device(const std::string& base,
         void (*register_device_callback)
-                (const char *, const char *, unsigned char, unsigned char, int, int, unsigned))
+                (const char*, const char*, unsigned char, unsigned char, int, int, unsigned))
 {
-    char busname[32], devname[32];
-    unsigned char local_ep_in, local_ep_out;
-    DIR *busdir , *devdir ;
-    struct dirent *de;
-    int fd ;
+    std::unique_ptr<DIR, int(*)(DIR*)> bus_dir(opendir(base.c_str()), closedir);
+    if (!bus_dir) return;
 
-    busdir = opendir(base);
-    if(busdir == 0) return;
+    dirent* de;
+    while ((de = readdir(bus_dir.get())) != 0) {
+        if (contains_non_digit(de->d_name)) continue;
 
-    while((de = readdir(busdir)) != 0) {
-        if(badname(de->d_name)) continue;
+        std::string bus_name = base + "/" + de->d_name;
 
-        snprintf(busname, sizeof busname, "%s/%s", base, de->d_name);
-        devdir = opendir(busname);
-        if(devdir == 0) continue;
+        std::unique_ptr<DIR, int(*)(DIR*)> dev_dir(opendir(bus_name.c_str()), closedir);
+        if (!dev_dir) continue;
 
-//        DBGX("[ scanning %s ]\n", busname);
-        while((de = readdir(devdir))) {
+        while ((de = readdir(dev_dir.get()))) {
             unsigned char devdesc[4096];
             unsigned char* bufptr = devdesc;
             unsigned char* bufend;
@@ -153,22 +141,20 @@
             struct usb_endpoint_descriptor *ep1, *ep2;
             unsigned zero_mask = 0;
             unsigned vid, pid;
-            size_t desclength;
 
-            if(badname(de->d_name)) continue;
-            snprintf(devname, sizeof devname, "%s/%s", busname, de->d_name);
+            if (contains_non_digit(de->d_name)) continue;
 
-            if(known_device(devname)) {
-                DBGX("skipping %s\n", devname);
+            std::string dev_name = bus_name + "/" + de->d_name;
+            if (is_known_device(dev_name.c_str())) {
                 continue;
             }
 
-//            DBGX("[ scanning %s ]\n", devname);
-            if((fd = unix_open(devname, O_RDONLY | O_CLOEXEC)) < 0) {
+            int fd = unix_open(dev_name.c_str(), O_RDONLY | O_CLOEXEC);
+            if (fd == -1) {
                 continue;
             }
 
-            desclength = unix_read(fd, devdesc, sizeof(devdesc));
+            size_t desclength = unix_read(fd, devdesc, sizeof(devdesc));
             bufend = bufptr + desclength;
 
                 // should have device and configuration descriptors, and atleast two endpoints
@@ -188,7 +174,7 @@
 
             vid = device->idVendor;
             pid = device->idProduct;
-            DBGX("[ %s is V:%04x P:%04x ]\n", devname, vid, pid);
+            DBGX("[ %s is V:%04x P:%04x ]\n", dev_name.c_str(), vid, pid);
 
                 // should have config descriptor next
             config = (struct usb_config_descriptor *)bufptr;
@@ -225,7 +211,7 @@
                         struct stat st;
                         char pathbuf[128];
                         char link[256];
-                        char *devpath = NULL;
+                        char *devpath = nullptr;
 
                         DBGX("looking for bulk endpoints\n");
                             // looks like ADB...
@@ -267,6 +253,7 @@
                         }
 
                             // we have a match.  now we just need to figure out which is in and which is out.
+                        unsigned char local_ep_in, local_ep_out;
                         if (ep1->bEndpointAddress & USB_ENDPOINT_DIR_MASK) {
                             local_ep_in = ep1->bEndpointAddress;
                             local_ep_out = ep2->bEndpointAddress;
@@ -277,14 +264,12 @@
 
                             // Determine the device path
                         if (!fstat(fd, &st) && S_ISCHR(st.st_mode)) {
-                            char *slash;
-                            ssize_t link_len;
                             snprintf(pathbuf, sizeof(pathbuf), "/sys/dev/char/%d:%d",
                                      major(st.st_rdev), minor(st.st_rdev));
-                            link_len = readlink(pathbuf, link, sizeof(link) - 1);
+                            ssize_t link_len = readlink(pathbuf, link, sizeof(link) - 1);
                             if (link_len > 0) {
                                 link[link_len] = '\0';
-                                slash = strrchr(link, '/');
+                                const char* slash = strrchr(link, '/');
                                 if (slash) {
                                     snprintf(pathbuf, sizeof(pathbuf),
                                              "usb:%s", slash + 1);
@@ -293,7 +278,7 @@
                             }
                         }
 
-                        register_device_callback(devname, devpath,
+                        register_device_callback(dev_name.c_str(), devpath,
                                 local_ep_in, local_ep_out,
                                 interface->bInterfaceNumber, device->iSerialNumber, zero_mask);
                         break;
@@ -304,72 +289,54 @@
             } // end of while
 
             unix_close(fd);
-        } // end of devdir while
-        closedir(devdir);
-    } //end of busdir while
-    closedir(busdir);
+        }
+    }
 }
 
-static int usb_bulk_write(usb_handle *h, const void *data, int len)
-{
-    struct usbdevfs_urb *urb = &h->urb_out;
-    int res;
-    struct timeval tv;
-    struct timespec ts;
+static int usb_bulk_write(usb_handle* h, const void* data, int len) {
+    std::unique_lock<std::mutex> lock(h->mutex);
+    D("++ usb_bulk_write ++\n");
 
+    usbdevfs_urb* urb = &h->urb_out;
     memset(urb, 0, sizeof(*urb));
     urb->type = USBDEVFS_URB_TYPE_BULK;
     urb->endpoint = h->ep_out;
     urb->status = -1;
-    urb->buffer = (void*) data;
+    urb->buffer = const_cast<void*>(data);
     urb->buffer_length = len;
 
-    D("++ write ++\n");
-
-    adb_mutex_lock(&h->lock);
-    if(h->dead) {
-        res = -1;
-        goto fail;
-    }
-    do {
-        res = ioctl(h->desc, USBDEVFS_SUBMITURB, urb);
-    } while((res < 0) && (errno == EINTR));
-
-    if(res < 0) {
-        goto fail;
+    if (h->dead) {
+        errno = EINVAL;
+        return -1;
     }
 
-    res = -1;
-    h->urb_out_busy = 1;
-    for(;;) {
-        /* time out after five seconds */
-        gettimeofday(&tv, NULL);
-        ts.tv_sec = tv.tv_sec + 5;
-        ts.tv_nsec = tv.tv_usec * 1000L;
-        res = pthread_cond_timedwait(&h->notify, &h->lock, &ts);
-        if(res < 0 || h->dead) {
-            break;
+    if (TEMP_FAILURE_RETRY(ioctl(h->fd, USBDEVFS_SUBMITURB, urb)) == -1) {
+        return -1;
+    }
+
+    h->urb_out_busy = true;
+    while (true) {
+        auto now = std::chrono::system_clock::now();
+        if (h->cv.wait_until(lock, now + 5s) == std::cv_status::timeout || h->dead) {
+            // TODO: call USBDEVFS_DISCARDURB?
+            errno = ETIMEDOUT;
+            return -1;
         }
-        if(h->urb_out_busy == 0) {
-            if(urb->status == 0) {
-                res = urb->actual_length;
+        if (!h->urb_out_busy) {
+            if (urb->status != 0) {
+                errno = -urb->status;
+                return -1;
             }
-            break;
+            return urb->actual_length;
         }
     }
-fail:
-    adb_mutex_unlock(&h->lock);
-    D("-- write --\n");
-    return res;
 }
 
-static int usb_bulk_read(usb_handle *h, void *data, int len)
-{
-    struct usbdevfs_urb *urb = &h->urb_in;
-    struct usbdevfs_urb *out = NULL;
-    int res;
-
+static int usb_bulk_read(usb_handle* h, void* data, int len) {
+    std::unique_lock<std::mutex> lock(h->mutex);
     D("++ usb_bulk_read ++\n");
+
+    usbdevfs_urb* urb = &h->urb_in;
     memset(urb, 0, sizeof(*urb));
     urb->type = USBDEVFS_URB_TYPE_BULK;
     urb->endpoint = h->ep_in;
@@ -377,100 +344,76 @@
     urb->buffer = data;
     urb->buffer_length = len;
 
-
-    adb_mutex_lock(&h->lock);
-    if(h->dead) {
-        res = -1;
-        goto fail;
-    }
-    do {
-        res = ioctl(h->desc, USBDEVFS_SUBMITURB, urb);
-    } while((res < 0) && (errno == EINTR));
-
-    if(res < 0) {
-        goto fail;
+    if (h->dead) {
+        errno = EINVAL;
+        return -1;
     }
 
-    h->urb_in_busy = 1;
-    for(;;) {
+    if (TEMP_FAILURE_RETRY(ioctl(h->fd, USBDEVFS_SUBMITURB, urb)) == -1) {
+        return -1;
+    }
+
+    h->urb_in_busy = true;
+    while (true) {
         D("[ reap urb - wait ]\n");
         h->reaper_thread = pthread_self();
-        adb_mutex_unlock(&h->lock);
-        res = ioctl(h->desc, USBDEVFS_REAPURB, &out);
+        int fd = h->fd;
+        lock.unlock();
+
+        // This ioctl must not have TEMP_FAILURE_RETRY because we send SIGALRM to break out.
+        usbdevfs_urb* out = nullptr;
+        int res = ioctl(fd, USBDEVFS_REAPURB, &out);
         int saved_errno = errno;
-        adb_mutex_lock(&h->lock);
+
+        lock.lock();
         h->reaper_thread = 0;
-        if(h->dead) {
-            res = -1;
-            break;
+        if (h->dead) {
+            errno = EINVAL;
+            return -1;
         }
-        if(res < 0) {
-            if(saved_errno == EINTR) {
+        if (res < 0) {
+            if (saved_errno == EINTR) {
                 continue;
             }
             D("[ reap urb - error ]\n");
-            break;
+            errno = saved_errno;
+            return -1;
         }
-        D("[ urb @%p status = %d, actual = %d ]\n",
-            out, out->status, out->actual_length);
+        D("[ urb @%p status = %d, actual = %d ]\n", out, out->status, out->actual_length);
 
-        if(out == &h->urb_in) {
+        if (out == &h->urb_in) {
             D("[ reap urb - IN complete ]\n");
-            h->urb_in_busy = 0;
-            if(urb->status == 0) {
-                res = urb->actual_length;
-            } else {
-                res = -1;
+            h->urb_in_busy = false;
+            if (urb->status != 0) {
+                errno = -urb->status;
+                return -1;
             }
-            break;
+            return urb->actual_length;
         }
-        if(out == &h->urb_out) {
+        if (out == &h->urb_out) {
             D("[ reap urb - OUT compelete ]\n");
-            h->urb_out_busy = 0;
-            adb_cond_broadcast(&h->notify);
+            h->urb_out_busy = false;
+            h->cv.notify_all();
         }
     }
-fail:
-    adb_mutex_unlock(&h->lock);
-    D("-- usb_bulk_read --\n");
-    return res;
 }
 
 
 int usb_write(usb_handle *h, const void *_data, int len)
 {
-    unsigned char *data = (unsigned char*) _data;
-    int n;
-    int need_zero = 0;
-
     D("++ usb_write ++\n");
-    if(h->zero_mask) {
-            /* if we need 0-markers and our transfer
-            ** is an even multiple of the packet size,
-            ** we make note of it
-            */
-        if(!(len & h->zero_mask)) {
-            need_zero = 1;
-        }
+
+    unsigned char *data = (unsigned char*) _data;
+    int n = usb_bulk_write(h, data, len);
+    if (n != len) {
+        D("ERROR: n = %d, errno = %d (%s)\n", n, errno, strerror(errno));
+        return -1;
     }
 
-    while(len > 0) {
-        int xfer = (len > 4096) ? 4096 : len;
-
-        n = usb_bulk_write(h, data, xfer);
-        if(n != xfer) {
-            D("ERROR: n = %d, errno = %d (%s)\n",
-                n, errno, strerror(errno));
-            return -1;
-        }
-
-        len -= xfer;
-        data += xfer;
-    }
-
-    if(need_zero){
-        n = usb_bulk_write(h, _data, 0);
-        return n;
+    if (h->zero_mask && !(len & h->zero_mask)) {
+        // If we need 0-markers and our transfer is an even multiple of the packet size,
+        // then send a zero marker.
+        return usb_bulk_write(h, _data, 0);
     }
 
     D("-- usb_write --\n");
@@ -484,13 +427,13 @@
 
     D("++ usb_read ++\n");
     while(len > 0) {
-        int xfer = (len > 4096) ? 4096 : len;
+        int xfer = len;
 
-        D("[ usb read %d fd = %d], fname=%s\n", xfer, h->desc, h->fname);
+        D("[ usb read %d fd = %d], path=%s\n", xfer, h->fd, h->path.c_str());
         n = usb_bulk_read(h, data, xfer);
-        D("[ usb read %d ] = %d, fname=%s\n", xfer, n, h->fname);
+        D("[ usb read %d ] = %d, path=%s\n", xfer, n, h->path.c_str());
         if(n != xfer) {
-            if((errno == ETIMEDOUT) && (h->desc != -1)) {
+            if((errno == ETIMEDOUT) && (h->fd != -1)) {
                 D("[ timeout ]\n");
                 if(n > 0){
                     data += n;
@@ -511,12 +454,11 @@
     return 0;
 }
 
-void usb_kick(usb_handle *h)
-{
-    D("[ kicking %p (fd = %d) ]\n", h, h->desc);
-    adb_mutex_lock(&h->lock);
-    if(h->dead == 0) {
-        h->dead = 1;
+void usb_kick(usb_handle* h) {
+    std::lock_guard<std::mutex> lock(h->mutex);
+    D("[ kicking %p (fd = %d) ]\n", h, h->fd);
+    if (!h->dead) {
+        h->dead = true;
 
         if (h->writeable) {
             /* HACK ALERT!
@@ -532,34 +474,27 @@
             ** but this ensures that a reader blocked on REAPURB
             ** will get unblocked
             */
-            ioctl(h->desc, USBDEVFS_DISCARDURB, &h->urb_in);
-            ioctl(h->desc, USBDEVFS_DISCARDURB, &h->urb_out);
+            ioctl(h->fd, USBDEVFS_DISCARDURB, &h->urb_in);
+            ioctl(h->fd, USBDEVFS_DISCARDURB, &h->urb_out);
             h->urb_in.status = -ENODEV;
             h->urb_out.status = -ENODEV;
-            h->urb_in_busy = 0;
-            h->urb_out_busy = 0;
-            adb_cond_broadcast(&h->notify);
+            h->urb_in_busy = false;
+            h->urb_out_busy = false;
+            h->cv.notify_all();
         } else {
             unregister_usb_transport(h);
         }
     }
-    adb_mutex_unlock(&h->lock);
 }
 
-int usb_close(usb_handle *h)
-{
-    D("++ usb close ++\n");
-    adb_mutex_lock(&usb_lock);
-    h->next->prev = h->prev;
-    h->prev->next = h->next;
-    h->prev = 0;
-    h->next = 0;
+int usb_close(usb_handle* h) {
+    std::lock_guard<std::mutex> lock(g_usb_handles_mutex);
+    g_usb_handles.remove(h);
 
-    unix_close(h->desc);
-    D("-- usb closed %p (fd = %d) --\n", h, h->desc);
-    adb_mutex_unlock(&usb_lock);
+    D("-- usb close %p (fd = %d) --\n", h, h->fd);
 
-    free(h);
+    delete h;
+
     return 0;
 }
 
@@ -572,54 +507,44 @@
     // from the list when we're finally closed and everything will work out
     // fine.
     //
-    // If we have a usb_handle on the list 'o handles with a matching name, we
+    // If we have a usb_handle on the list of handles with a matching name, we
     // have no further work to do.
-    adb_mutex_lock(&usb_lock);
-    for (usb_handle* usb = handle_list.next; usb != &handle_list; usb = usb->next) {
-        if (!strcmp(usb->fname, dev_name)) {
-            adb_mutex_unlock(&usb_lock);
-            return;
+    {
+        std::lock_guard<std::mutex> lock(g_usb_handles_mutex);
+        for (usb_handle* usb: g_usb_handles) {
+            if (usb->path == dev_name) {
+                return;
+            }
         }
     }
-    adb_mutex_unlock(&usb_lock);
 
     D("[ usb located new device %s (%d/%d/%d) ]\n", dev_name, ep_in, ep_out, interface);
-    usb_handle* usb = reinterpret_cast<usb_handle*>(calloc(1, sizeof(usb_handle)));
-    if (usb == nullptr) fatal("couldn't allocate usb_handle");
-    strcpy(usb->fname, dev_name);
+    std::unique_ptr<usb_handle> usb(new usb_handle);
+    usb->path = dev_name;
     usb->ep_in = ep_in;
     usb->ep_out = ep_out;
     usb->zero_mask = zero_mask;
-    usb->writeable = 1;
 
-    adb_cond_init(&usb->notify, 0);
-    adb_mutex_init(&usb->lock, 0);
-    // Initialize mark to 1 so we don't get garbage collected after the device
-    // scan.
-    usb->mark = 1;
-    usb->reaper_thread = 0;
+    // Initialize mark so we don't get garbage collected after the device scan.
+    usb->mark = true;
 
-    usb->desc = unix_open(usb->fname, O_RDWR | O_CLOEXEC);
-    if (usb->desc == -1) {
+    usb->fd = unix_open(usb->path.c_str(), O_RDWR | O_CLOEXEC);
+    if (usb->fd == -1) {
         // Opening RW failed, so see if we have RO access.
-        usb->desc = unix_open(usb->fname, O_RDONLY | O_CLOEXEC);
-        if (usb->desc == -1) {
-            D("[ usb open %s failed: %s]\n", usb->fname, strerror(errno));
-            free(usb);
+        usb->fd = unix_open(usb->path.c_str(), O_RDONLY | O_CLOEXEC);
+        if (usb->fd == -1) {
+            D("[ usb open %s failed: %s]\n", usb->path.c_str(), strerror(errno));
             return;
         }
         usb->writeable = 0;
     }
 
-    D("[ usb opened %s%s, fd=%d]\n", usb->fname,
-      (usb->writeable ? "" : " (read-only)"), usb->desc);
+    D("[ usb opened %s%s, fd=%d]\n",
+      usb->path.c_str(), (usb->writeable ? "" : " (read-only)"), usb->fd);
 
     if (usb->writeable) {
-        if (ioctl(usb->desc, USBDEVFS_CLAIMINTERFACE, &interface) != 0) {
-            D("[ usb ioctl(%d, USBDEVFS_CLAIMINTERFACE) failed: %s]\n",
-              usb->desc, strerror(errno));
-            unix_close(usb->desc);
-            free(usb);
+        if (ioctl(usb->fd, USBDEVFS_CLAIMINTERFACE, &interface) != 0) {
+            D("[ usb ioctl(%d, USBDEVFS_CLAIMINTERFACE) failed: %s]\n", usb->fd, strerror(errno));
             return;
         }
     }
@@ -638,14 +563,12 @@
     serial = android::base::Trim(serial);
 
     // Add to the end of the active handles.
-    adb_mutex_lock(&usb_lock);
-    usb->next = &handle_list;
-    usb->prev = handle_list.prev;
-    usb->prev->next = usb;
-    usb->next->prev = usb;
-    adb_mutex_unlock(&usb_lock);
-
-    register_usb_transport(usb, serial.c_str(), dev_path, usb->writeable);
+    usb_handle* done_usb = usb.release();
+    {
+        std::lock_guard<std::mutex> lock(g_usb_handles_mutex);
+        g_usb_handles.push_back(done_usb);
+    }
+    register_usb_transport(done_usb, serial.c_str(), dev_path, done_usb->writeable);
 }
 
 static void* device_poll_thread(void* unused) {
@@ -659,19 +582,13 @@
     return nullptr;
 }
 
-static void sigalrm_handler(int signo) {
-    // don't need to do anything here
-}
-
-void usb_init()
-{
-    struct sigaction    actions;
-
+void usb_init() {
+    struct sigaction actions;
     memset(&actions, 0, sizeof(actions));
     sigemptyset(&actions.sa_mask);
     actions.sa_flags = 0;
-    actions.sa_handler = sigalrm_handler;
-    sigaction(SIGALRM,& actions, NULL);
+    actions.sa_handler = [](int) {};
+    sigaction(SIGALRM, &actions, nullptr);
 
     if (!adb_thread_create(device_poll_thread, nullptr)) {
         fatal_errno("cannot create input thread");
diff --git a/adb/usb_linux_client.cpp b/adb/usb_linux_client.cpp
index d34c454..b1b3538 100644
--- a/adb/usb_linux_client.cpp
+++ b/adb/usb_linux_client.cpp
@@ -213,14 +213,20 @@
 
 static int usb_adb_read(usb_handle *h, void *data, int len)
 {
-    int n;
-
     D("about to read (fd=%d, len=%d)\n", h->fd, len);
-    n = unix_read(h->fd, data, len);
-    if(n != len) {
-        D("ERROR: fd = %d, n = %d, errno = %d (%s)\n",
-            h->fd, n, errno, strerror(errno));
-        return -1;
+    while (len > 0) {
+        // The kernel implementation of adb_read in f_adb.c doesn't support
+        // reads larger then 4096 bytes. Read the data in 4096 byte chunks to
+        // avoid the issue. (The ffs implementation doesn't have this limit.)
+        int bytes_to_read = len < 4096 ? len : 4096;
+        int n = unix_read(h->fd, data, bytes_to_read);
+        if (n != bytes_to_read) {
+            D("ERROR: fd = %d, n = %d, errno = %d (%s)\n",
+                h->fd, n, errno, strerror(errno));
+            return -1;
+        }
+        len -= n;
+        data = ((char*)data) + n;
     }
     D("[ done fd=%d ]\n", h->fd);
     return 0;
@@ -444,11 +450,11 @@
 
     err = ioctl(h->bulk_in, FUNCTIONFS_CLEAR_HALT);
     if (err < 0)
-        D("[ kick: source (fd=%d) clear halt failed (%d) ]", h->bulk_in, errno);
+        D("[ kick: source (fd=%d) clear halt failed (%d) ]\n", h->bulk_in, errno);
 
     err = ioctl(h->bulk_out, FUNCTIONFS_CLEAR_HALT);
     if (err < 0)
-        D("[ kick: sink (fd=%d) clear halt failed (%d) ]", h->bulk_out, errno);
+        D("[ kick: sink (fd=%d) clear halt failed (%d) ]\n", h->bulk_out, errno);
 
     adb_mutex_lock(&h->lock);
 
diff --git a/adb/usb_osx.cpp b/adb/usb_osx.cpp
index af65130..939f319 100644
--- a/adb/usb_osx.cpp
+++ b/adb/usb_osx.cpp
@@ -34,6 +34,10 @@
 
 #define  DBG   D
 
+// There's no strerror equivalent for the errors returned by IOKit.
+// https://developer.apple.com/library/mac/documentation/DeviceDrivers/Conceptual/AccessingHardware/AH_Handling_Errors/AH_Handling_Errors.html
+// Search the web for "IOReturn.h" to find a complete up to date list.
+
 static IONotificationPortRef    notificationPort = 0;
 static io_iterator_t            notificationIterator;
 
@@ -362,7 +366,7 @@
 
             handle->zero_mask = maxPacketSize - 1;
         } else {
-            DBG("ERR: FindDeviceInterface - could not get pipe properties\n");
+            DBG("ERR: FindDeviceInterface - could not get pipe properties (%08x)\n", kr);
             goto err_get_pipe_props;
         }
     }
diff --git a/adb/usb_windows.cpp b/adb/usb_windows.cpp
index 25deb1b..b8cc5cf 100644
--- a/adb/usb_windows.cpp
+++ b/adb/usb_windows.cpp
@@ -33,6 +33,10 @@
 /** Structure usb_handle describes our connection to the usb device via
   AdbWinApi.dll. This structure is returned from usb_open() routine and
   is expected in each subsequent call that is accessing the device.
+
+  Most members are protected by usb_lock, except for adb_{read,write}_pipe which
+  rely on AdbWinApi.dll's handle validation and AdbCloseHandle(endpoint)'s
+  ability to break a thread out of pipe IO.
 */
 struct usb_handle {
   /// Previous entry in the list of opened usb handles
@@ -86,6 +90,9 @@
 /// registers usb transport for them.
 void find_devices();
 
+/// Kicks all USB devices
+static void kick_devices();
+
 /// Entry point for thread that polls (every second) for new usb interfaces.
 /// This routine calls find_devices in infinite loop.
 void* device_poll_thread(void* unused);
@@ -111,9 +118,6 @@
 /// Closes opened usb handle
 int usb_close(usb_handle* handle);
 
-/// Gets interface (device) name for an opened usb handle
-const char *usb_name(usb_handle* handle);
-
 int known_device_locked(const char* dev_name) {
   usb_handle* usb;
 
@@ -177,17 +181,99 @@
   return NULL;
 }
 
+static LRESULT CALLBACK _power_window_proc(HWND hwnd, UINT uMsg, WPARAM wParam,
+                                           LPARAM lParam) {
+  switch (uMsg) {
+  case WM_POWERBROADCAST:
+    switch (wParam) {
+    case PBT_APMRESUMEAUTOMATIC:
+      // Resuming from sleep or hibernation, so kick all existing USB devices
+      // and then allow the device_poll_thread to redetect USB devices from
+      // scratch. If we don't do this, existing USB devices will never respond
+      // to us because they'll be waiting for the connect/auth handshake.
+      D("Received (WM_POWERBROADCAST, PBT_APMRESUMEAUTOMATIC) notification, "
+        "so kicking all USB devices\n");
+      kick_devices();
+      return TRUE;
+    }
+  }
+  return DefWindowProcW(hwnd, uMsg, wParam, lParam);
+}
+
+static void* _power_notification_thread(void* unused) {
+  // This uses a thread with its own window message pump to get power
+  // notifications. If adb runs from a non-interactive service account, this
+  // might not work (not sure). If that happens to not work, we could use
+  // heavyweight WMI APIs to get power notifications. But for the common case
+  // of a developer's interactive session, a window message pump is more
+  // appropriate.
+  D("Created power notification thread\n");
+
+  // Window class names are process specific.
+  static const WCHAR kPowerNotificationWindowClassName[] =
+    L"PowerNotificationWindow";
+
+  // Get the HINSTANCE corresponding to the module that _power_window_proc
+  // is in (the main module).
+  const HINSTANCE instance = GetModuleHandleW(NULL);
+  if (!instance) {
+    // This is such a common API call that this should never fail.
+    fatal("GetModuleHandleW failed: %s",
+          SystemErrorCodeToString(GetLastError()).c_str());
+  }
+
+  WNDCLASSEXW wndclass;
+  memset(&wndclass, 0, sizeof(wndclass));
+  wndclass.cbSize = sizeof(wndclass);
+  wndclass.lpfnWndProc = _power_window_proc;
+  wndclass.hInstance = instance;
+  wndclass.lpszClassName = kPowerNotificationWindowClassName;
+  if (!RegisterClassExW(&wndclass)) {
+    fatal("RegisterClassExW failed: %s",
+          SystemErrorCodeToString(GetLastError()).c_str());
+  }
+
+  if (!CreateWindowExW(WS_EX_NOACTIVATE, kPowerNotificationWindowClassName,
+                       L"ADB Power Notification Window", WS_POPUP, 0, 0, 0, 0,
+                       NULL, NULL, instance, NULL)) {
+    fatal("CreateWindowExW failed: %s",
+          SystemErrorCodeToString(GetLastError()).c_str());
+  }
+
+  MSG msg;
+  while (GetMessageW(&msg, NULL, 0, 0)) {
+    TranslateMessage(&msg);
+    DispatchMessageW(&msg);
+  }
+
+  // GetMessageW() will return false if a quit message is posted. We don't
+  // do that, but it might be possible for that to occur when logging off or
+  // shutting down. Not a big deal since the whole process will be going away
+  // soon anyway.
+  D("Power notification thread exiting\n");
+
+  return NULL;
+}
+
 void usb_init() {
   if (!adb_thread_create(device_poll_thread, nullptr)) {
-    fatal_errno("cannot create input thread");
+    fatal_errno("cannot create device poll thread");
+  }
+  if (!adb_thread_create(_power_notification_thread, nullptr)) {
+    fatal_errno("cannot create power notification thread");
   }
 }
 
 usb_handle* do_usb_open(const wchar_t* interface_name) {
+  unsigned long name_len = 0;
+
   // Allocate our handle
-  usb_handle* ret = (usb_handle*)malloc(sizeof(usb_handle));
-  if (NULL == ret)
-    return NULL;
+  usb_handle* ret = (usb_handle*)calloc(1, sizeof(usb_handle));
+  if (NULL == ret) {
+    D("Could not allocate %u bytes for usb_handle: %s\n", sizeof(usb_handle),
+      strerror(errno));
+    goto fail;
+  }
 
   // Set linkers back to the handle
   ret->next = ret;
@@ -195,11 +281,10 @@
 
   // Create interface.
   ret->adb_interface = AdbCreateInterfaceByName(interface_name);
-
   if (NULL == ret->adb_interface) {
-    free(ret);
-    errno = GetLastError();
-    return NULL;
+    D("AdbCreateInterfaceByName failed: %s\n",
+      SystemErrorCodeToString(GetLastError()).c_str());
+    goto fail;
   }
 
   // Open read pipe (endpoint)
@@ -207,45 +292,60 @@
     AdbOpenDefaultBulkReadEndpoint(ret->adb_interface,
                                    AdbOpenAccessTypeReadWrite,
                                    AdbOpenSharingModeReadWrite);
-  if (NULL != ret->adb_read_pipe) {
-    // Open write pipe (endpoint)
-    ret->adb_write_pipe =
-      AdbOpenDefaultBulkWriteEndpoint(ret->adb_interface,
-                                      AdbOpenAccessTypeReadWrite,
-                                      AdbOpenSharingModeReadWrite);
-    if (NULL != ret->adb_write_pipe) {
-      // Save interface name
-      unsigned long name_len = 0;
-
-      // First get expected name length
-      AdbGetInterfaceName(ret->adb_interface,
-                          NULL,
-                          &name_len,
-                          true);
-      if (0 != name_len) {
-        ret->interface_name = (char*)malloc(name_len);
-
-        if (NULL != ret->interface_name) {
-          // Now save the name
-          if (AdbGetInterfaceName(ret->adb_interface,
-                                  ret->interface_name,
-                                  &name_len,
-                                  true)) {
-            // We're done at this point
-            return ret;
-          }
-        } else {
-          SetLastError(ERROR_OUTOFMEMORY);
-        }
-      }
-    }
+  if (NULL == ret->adb_read_pipe) {
+    D("AdbOpenDefaultBulkReadEndpoint failed: %s\n",
+      SystemErrorCodeToString(GetLastError()).c_str());
+    goto fail;
   }
 
-  // Something went wrong.
-  int saved_errno = GetLastError();
-  usb_cleanup_handle(ret);
-  free(ret);
-  SetLastError(saved_errno);
+  // Open write pipe (endpoint)
+  ret->adb_write_pipe =
+    AdbOpenDefaultBulkWriteEndpoint(ret->adb_interface,
+                                    AdbOpenAccessTypeReadWrite,
+                                    AdbOpenSharingModeReadWrite);
+  if (NULL == ret->adb_write_pipe) {
+    D("AdbOpenDefaultBulkWriteEndpoint failed: %s\n",
+      SystemErrorCodeToString(GetLastError()).c_str());
+    goto fail;
+  }
+
+  // Save interface name
+  // First get expected name length
+  AdbGetInterfaceName(ret->adb_interface,
+                      NULL,
+                      &name_len,
+                      true);
+  if (0 == name_len) {
+    D("AdbGetInterfaceName returned name length of zero: %s\n",
+      SystemErrorCodeToString(GetLastError()).c_str());
+    goto fail;
+  }
+
+  ret->interface_name = (char*)malloc(name_len);
+  if (NULL == ret->interface_name) {
+    D("Could not allocate %lu bytes for interface_name: %s\n", name_len,
+      strerror(errno));
+    goto fail;
+  }
+
+  // Now save the name
+  if (!AdbGetInterfaceName(ret->adb_interface,
+                           ret->interface_name,
+                           &name_len,
+                           true)) {
+    D("AdbGetInterfaceName failed: %s\n",
+      SystemErrorCodeToString(GetLastError()).c_str());
+    goto fail;
+  }
+
+  // We're done at this point
+  return ret;
+
+fail:
+  if (NULL != ret) {
+    usb_cleanup_handle(ret);
+    free(ret);
+  }
 
   return NULL;
 }
@@ -253,99 +353,130 @@
 int usb_write(usb_handle* handle, const void* data, int len) {
   unsigned long time_out = 5000;
   unsigned long written = 0;
-  int ret;
+  int err = 0;
 
   D("usb_write %d\n", len);
-  if (NULL != handle) {
-    // Perform write
-    ret = AdbWriteEndpointSync(handle->adb_write_pipe,
-                               (void*)data,
-                               (unsigned long)len,
-                               &written,
-                               time_out);
-    int saved_errno = GetLastError();
-
-    if (ret) {
-      // Make sure that we've written what we were asked to write
-      D("usb_write got: %ld, expected: %d\n", written, len);
-      if (written == (unsigned long)len) {
-        if(handle->zero_mask && (len & handle->zero_mask) == 0) {
-          // Send a zero length packet
-          AdbWriteEndpointSync(handle->adb_write_pipe,
-                               (void*)data,
-                               0,
-                               &written,
-                               time_out);
-        }
-        return 0;
-      }
-    } else {
-      // assume ERROR_INVALID_HANDLE indicates we are disconnected
-      if (saved_errno == ERROR_INVALID_HANDLE)
-        usb_kick(handle);
-    }
-    errno = saved_errno;
-  } else {
-    D("usb_write NULL handle\n");
-    SetLastError(ERROR_INVALID_HANDLE);
+  if (NULL == handle) {
+    D("usb_write was passed NULL handle\n");
+    err = EINVAL;
+    goto fail;
   }
 
-  D("usb_write failed: %d\n", errno);
+  // Perform write
+  if (!AdbWriteEndpointSync(handle->adb_write_pipe,
+                            (void*)data,
+                            (unsigned long)len,
+                            &written,
+                            time_out)) {
+    D("AdbWriteEndpointSync failed: %s\n",
+      SystemErrorCodeToString(GetLastError()).c_str());
+    err = EIO;
+    goto fail;
+  }
 
+  // Make sure that we've written what we were asked to write
+  D("usb_write got: %ld, expected: %d\n", written, len);
+  if (written != (unsigned long)len) {
+    // If this occurs, this code should be changed to repeatedly call
+    // AdbWriteEndpointSync() until all bytes are written.
+    D("AdbWriteEndpointSync was supposed to write %d, but only wrote %ld\n",
+      len, written);
+    err = EIO;
+    goto fail;
+  }
+
+  if (handle->zero_mask && (len & handle->zero_mask) == 0) {
+    // Send a zero length packet
+    if (!AdbWriteEndpointSync(handle->adb_write_pipe,
+                              (void*)data,
+                              0,
+                              &written,
+                              time_out)) {
+      D("AdbWriteEndpointSync of zero length packet failed: %s\n",
+        SystemErrorCodeToString(GetLastError()).c_str());
+      err = EIO;
+      goto fail;
+    }
+  }
+
+  return 0;
+
+fail:
+  // Any failure should cause us to kick the device instead of leaving it a
+  // zombie state with potential to hang.
+  if (NULL != handle) {
+    D("Kicking device due to error in usb_write\n");
+    usb_kick(handle);
+  }
+
+  D("usb_write failed\n");
+  errno = err;
   return -1;
 }
 
 int usb_read(usb_handle *handle, void* data, int len) {
   unsigned long time_out = 0;
   unsigned long read = 0;
-  int ret;
+  int err = 0;
 
   D("usb_read %d\n", len);
-  if (NULL != handle) {
-    while (len > 0) {
-      int xfer = (len > 4096) ? 4096 : len;
-
-      ret = AdbReadEndpointSync(handle->adb_read_pipe,
-                                  data,
-                                  (unsigned long)xfer,
-                                  &read,
-                                  time_out);
-      int saved_errno = GetLastError();
-      D("usb_write got: %ld, expected: %d, errno: %d\n", read, xfer, saved_errno);
-      if (ret) {
-        data = (char *)data + read;
-        len -= read;
-
-        if (len == 0)
-          return 0;
-      } else {
-        // assume ERROR_INVALID_HANDLE indicates we are disconnected
-        if (saved_errno == ERROR_INVALID_HANDLE)
-          usb_kick(handle);
-        break;
-      }
-      errno = saved_errno;
-    }
-  } else {
-    D("usb_read NULL handle\n");
-    SetLastError(ERROR_INVALID_HANDLE);
+  if (NULL == handle) {
+    D("usb_read was passed NULL handle\n");
+    err = EINVAL;
+    goto fail;
   }
 
-  D("usb_read failed: %d\n", errno);
+  while (len > 0) {
+    if (!AdbReadEndpointSync(handle->adb_read_pipe, data, len, &read,
+                             time_out)) {
+      D("AdbReadEndpointSync failed: %s\n",
+        SystemErrorCodeToString(GetLastError()).c_str());
+      err = EIO;
+      goto fail;
+    }
+    D("usb_read got: %ld, expected: %d\n", read, len);
 
+    data = (char *)data + read;
+    len -= read;
+  }
+
+  return 0;
+
+fail:
+  // Any failure should cause us to kick the device instead of leaving it a
+  // zombie state with potential to hang.
+  if (NULL != handle) {
+    D("Kicking device due to error in usb_read\n");
+    usb_kick(handle);
+  }
+
+  D("usb_read failed\n");
+  errno = err;
   return -1;
 }
 
+// Wrapper around AdbCloseHandle() that logs diagnostics.
+static void _adb_close_handle(ADBAPIHANDLE adb_handle) {
+  if (!AdbCloseHandle(adb_handle)) {
+    D("AdbCloseHandle(%p) failed: %s\n", adb_handle,
+      SystemErrorCodeToString(GetLastError()).c_str());
+  }
+}
+
 void usb_cleanup_handle(usb_handle* handle) {
+  D("usb_cleanup_handle\n");
   if (NULL != handle) {
     if (NULL != handle->interface_name)
       free(handle->interface_name);
+    // AdbCloseHandle(pipe) will break any threads out of pending IO calls and
+    // wait until the pipe no longer uses the interface. Then we can
+    // AdbCloseHandle() the interface.
     if (NULL != handle->adb_write_pipe)
-      AdbCloseHandle(handle->adb_write_pipe);
+      _adb_close_handle(handle->adb_write_pipe);
     if (NULL != handle->adb_read_pipe)
-      AdbCloseHandle(handle->adb_read_pipe);
+      _adb_close_handle(handle->adb_read_pipe);
     if (NULL != handle->adb_interface)
-      AdbCloseHandle(handle->adb_interface);
+      _adb_close_handle(handle->adb_interface);
 
     handle->interface_name = NULL;
     handle->adb_write_pipe = NULL;
@@ -354,16 +485,22 @@
   }
 }
 
+static void usb_kick_locked(usb_handle* handle) {
+  // The reason the lock must be acquired before calling this function is in
+  // case multiple threads are trying to kick the same device at the same time.
+  usb_cleanup_handle(handle);
+}
+
 void usb_kick(usb_handle* handle) {
+  D("usb_kick\n");
   if (NULL != handle) {
     adb_mutex_lock(&usb_lock);
 
-    usb_cleanup_handle(handle);
+    usb_kick_locked(handle);
 
     adb_mutex_unlock(&usb_lock);
   } else {
-    SetLastError(ERROR_INVALID_HANDLE);
-    errno = ERROR_INVALID_HANDLE;
+    errno = EINVAL;
   }
 }
 
@@ -391,16 +528,6 @@
   return 0;
 }
 
-const char *usb_name(usb_handle* handle) {
-  if (NULL == handle) {
-    SetLastError(ERROR_INVALID_HANDLE);
-    errno = ERROR_INVALID_HANDLE;
-    return NULL;
-  }
-
-  return (const char*)handle->interface_name;
-}
-
 int recognized_device(usb_handle* handle) {
   if (NULL == handle)
     return 0;
@@ -410,6 +537,8 @@
 
   if (!AdbGetUsbDeviceDescriptor(handle->adb_interface,
                                  &device_desc)) {
+    D("AdbGetUsbDeviceDescriptor failed: %s\n",
+      SystemErrorCodeToString(GetLastError()).c_str());
     return 0;
   }
 
@@ -418,6 +547,8 @@
 
   if (!AdbGetUsbInterfaceDescriptor(handle->adb_interface,
                                     &interf_desc)) {
+    D("AdbGetUsbInterfaceDescriptor failed: %s\n",
+      SystemErrorCodeToString(GetLastError()).c_str());
     return 0;
   }
 
@@ -434,6 +565,10 @@
       // assuming zero is a valid bulk endpoint ID
       if (AdbGetEndpointInformation(handle->adb_interface, 0, &endpoint_info)) {
         handle->zero_mask = endpoint_info.max_packet_size - 1;
+        D("device zero_mask: 0x%x\n", handle->zero_mask);
+      } else {
+        D("AdbGetEndpointInformation failed: %s\n",
+          SystemErrorCodeToString(GetLastError()).c_str());
       }
     }
 
@@ -455,8 +590,11 @@
   ADBAPIHANDLE enum_handle =
     AdbEnumInterfaces(usb_class_id, true, true, true);
 
-  if (NULL == enum_handle)
+  if (NULL == enum_handle) {
+    D("AdbEnumInterfaces failed: %s\n",
+      SystemErrorCodeToString(GetLastError()).c_str());
     return;
+  }
 
   while (AdbNextInterface(enum_handle, next_interface, &entry_buffer_size)) {
     // TODO: FIXME - temp hack converting wchar_t into char.
@@ -493,7 +631,8 @@
               free(handle);
             }
           } else {
-            D("cannot get serial number\n");
+            D("cannot get serial number: %s\n",
+              SystemErrorCodeToString(GetLastError()).c_str());
             usb_cleanup_handle(handle);
             free(handle);
           }
@@ -507,5 +646,21 @@
     entry_buffer_size = sizeof(entry_buffer);
   }
 
-  AdbCloseHandle(enum_handle);
+  if (GetLastError() != ERROR_NO_MORE_ITEMS) {
+    // Only ERROR_NO_MORE_ITEMS is expected at the end of enumeration.
+    D("AdbNextInterface failed: %s\n",
+      SystemErrorCodeToString(GetLastError()).c_str());
+  }
+
+  _adb_close_handle(enum_handle);
+}
+
+static void kick_devices() {
+  // Need to acquire lock to safely walk the list which might be modified
+  // by another thread.
+  adb_mutex_lock(&usb_lock);
+  for (usb_handle* usb = handle_list.next; usb != &handle_list; usb = usb->next) {
+    usb_kick_locked(usb);
+  }
+  adb_mutex_unlock(&usb_lock);
 }
diff --git a/adf/libadf/adf.c b/adf/libadf/adf.c
index 66c329c..c4d6681 100644
--- a/adf/libadf/adf.c
+++ b/adf/libadf/adf.c
@@ -87,7 +87,6 @@
 int adf_device_open(adf_id_t id, int flags, struct adf_device *dev)
 {
     char filename[64];
-    int err;
 
     dev->id = id;
 
diff --git a/base/Android.mk b/base/Android.mk
index 7bd317b..4e135f6 100644
--- a/base/Android.mk
+++ b/base/Android.mk
@@ -21,6 +21,7 @@
     logging.cpp \
     stringprintf.cpp \
     strings.cpp \
+    test_utils.cpp \
 
 libbase_test_src_files := \
     file_test.cpp \
@@ -28,7 +29,6 @@
     stringprintf_test.cpp \
     strings_test.cpp \
     test_main.cpp \
-    test_utils.cpp \
 
 libbase_cppflags := \
     -Wall \
diff --git a/base/file_test.cpp b/base/file_test.cpp
index b138094..77b9268 100644
--- a/base/file_test.cpp
+++ b/base/file_test.cpp
@@ -24,7 +24,7 @@
 
 #include <string>
 
-#include "test_utils.h"
+#include "base/test_utils.h"
 
 TEST(file, ReadFileToString_ENOENT) {
   std::string s("hello");
@@ -34,23 +34,13 @@
   EXPECT_EQ("", s);  // s was cleared.
 }
 
-TEST(file, ReadFileToString_success) {
-  std::string s("hello");
-  ASSERT_TRUE(android::base::ReadFileToString("/proc/version", &s))
-    << strerror(errno);
-  EXPECT_GT(s.length(), 6U);
-  EXPECT_EQ('\n', s[s.length() - 1]);
-  s[5] = 0;
-  EXPECT_STREQ("Linux", s.c_str());
-}
-
-TEST(file, WriteStringToFile) {
+TEST(file, ReadFileToString_WriteStringToFile) {
   TemporaryFile tf;
   ASSERT_TRUE(tf.fd != -1);
-  ASSERT_TRUE(android::base::WriteStringToFile("abc", tf.filename))
+  ASSERT_TRUE(android::base::WriteStringToFile("abc", tf.path))
     << strerror(errno);
   std::string s;
-  ASSERT_TRUE(android::base::ReadFileToString(tf.filename, &s))
+  ASSERT_TRUE(android::base::ReadFileToString(tf.path, &s))
     << strerror(errno);
   EXPECT_EQ("abc", s);
 }
@@ -61,16 +51,16 @@
 TEST(file, WriteStringToFile2) {
   TemporaryFile tf;
   ASSERT_TRUE(tf.fd != -1);
-  ASSERT_TRUE(android::base::WriteStringToFile("abc", tf.filename, 0660,
+  ASSERT_TRUE(android::base::WriteStringToFile("abc", tf.path, 0660,
                                                getuid(), getgid()))
       << strerror(errno);
   struct stat sb;
-  ASSERT_EQ(0, stat(tf.filename, &sb));
+  ASSERT_EQ(0, stat(tf.path, &sb));
   ASSERT_EQ(0660U, static_cast<unsigned int>(sb.st_mode & ~S_IFMT));
   ASSERT_EQ(getuid(), sb.st_uid);
   ASSERT_EQ(getgid(), sb.st_gid);
   std::string s;
-  ASSERT_TRUE(android::base::ReadFileToString(tf.filename, &s))
+  ASSERT_TRUE(android::base::ReadFileToString(tf.path, &s))
     << strerror(errno);
   EXPECT_EQ("abc", s);
 }
@@ -88,28 +78,21 @@
   EXPECT_EQ("abc", s);
 }
 
-TEST(file, ReadFully) {
-  int fd = open("/proc/version", O_RDONLY);
-  ASSERT_NE(-1, fd) << strerror(errno);
-
-  char buf[1024];
-  memset(buf, 0, sizeof(buf));
-  ASSERT_TRUE(android::base::ReadFully(fd, buf, 5));
-  ASSERT_STREQ("Linux", buf);
-
-  ASSERT_EQ(0, lseek(fd, 0, SEEK_SET)) << strerror(errno);
-
-  ASSERT_FALSE(android::base::ReadFully(fd, buf, sizeof(buf)));
-
-  close(fd);
-}
-
 TEST(file, WriteFully) {
   TemporaryFile tf;
   ASSERT_TRUE(tf.fd != -1);
   ASSERT_TRUE(android::base::WriteFully(tf.fd, "abc", 3));
+
+  ASSERT_EQ(0, lseek(tf.fd, 0, SEEK_SET)) << strerror(errno);
+
   std::string s;
-  ASSERT_TRUE(android::base::ReadFileToString(tf.filename, &s))
+  s.resize(3);
+  ASSERT_TRUE(android::base::ReadFully(tf.fd, &s[0], s.size()))
     << strerror(errno);
   EXPECT_EQ("abc", s);
+
+  ASSERT_EQ(0, lseek(tf.fd, 0, SEEK_SET)) << strerror(errno);
+
+  s.resize(1024);
+  ASSERT_FALSE(android::base::ReadFully(tf.fd, &s[0], s.size()));
 }
diff --git a/base/test_utils.h b/base/include/base/test_utils.h
similarity index 69%
rename from base/test_utils.h
rename to base/include/base/test_utils.h
index 132d3a7..402e0a5 100644
--- a/base/test_utils.h
+++ b/base/include/base/test_utils.h
@@ -17,16 +17,35 @@
 #ifndef TEST_UTILS_H
 #define TEST_UTILS_H
 
+#include <string>
+
+#include <base/macros.h>
+
 class TemporaryFile {
  public:
   TemporaryFile();
   ~TemporaryFile();
 
   int fd;
-  char filename[1024];
+  char path[1024];
 
  private:
-  void init(const char* tmp_dir);
+  void init(const std::string& tmp_dir);
+
+  DISALLOW_COPY_AND_ASSIGN(TemporaryFile);
+};
+
+class TemporaryDir {
+ public:
+  TemporaryDir();
+  ~TemporaryDir();
+
+  char path[1024];
+
+ private:
+  bool init(const std::string& tmp_dir);
+
+  DISALLOW_COPY_AND_ASSIGN(TemporaryDir);
 };
 
 #endif // TEST_UTILS_H
diff --git a/base/logging_test.cpp b/base/logging_test.cpp
index c91857a..1a92c94 100644
--- a/base/logging_test.cpp
+++ b/base/logging_test.cpp
@@ -21,7 +21,7 @@
 
 #include "base/file.h"
 #include "base/stringprintf.h"
-#include "test_utils.h"
+#include "base/test_utils.h"
 
 #include <gtest/gtest.h>
 
diff --git a/base/stringprintf_test.cpp b/base/stringprintf_test.cpp
index 54b2b6c..5cc2086 100644
--- a/base/stringprintf_test.cpp
+++ b/base/stringprintf_test.cpp
@@ -20,14 +20,11 @@
 
 #include <string>
 
-// The z size sepcifier isn't supported on Windows, so this test isn't useful.
-#if !defined(_WIN32)
 TEST(StringPrintfTest, HexSizeT) {
   size_t size = 0x00107e59;
   EXPECT_EQ("00107e59", android::base::StringPrintf("%08zx", size));
   EXPECT_EQ("0x00107e59", android::base::StringPrintf("0x%08zx", size));
 }
-#endif
 
 TEST(StringPrintfTest, StringAppendF) {
   std::string s("a");
diff --git a/base/test_utils.cpp b/base/test_utils.cpp
index 0517bc7..b0c5a12 100644
--- a/base/test_utils.cpp
+++ b/base/test_utils.cpp
@@ -14,7 +14,9 @@
  * limitations under the License.
  */
 
-#include "test_utils.h"
+#include "base/logging.h"
+#include "base/test_utils.h"
+#include "utils/Compat.h" // For OS_PATH_SEPARATOR.
 
 #include <fcntl.h>
 #include <stdio.h>
@@ -24,36 +26,77 @@
 
 #if defined(_WIN32)
 #include <windows.h>
+#include <direct.h>
 #endif
 
-TemporaryFile::TemporaryFile() {
-#if defined(__ANDROID__)
-  init("/data/local/tmp");
-#elif defined(_WIN32)
-  char wd[MAX_PATH] = {};
-  _getcwd(wd, sizeof(wd));
-  init(wd);
-#else
-  init("/tmp");
+#include <string>
+
+#ifdef _WIN32
+int mkstemp(char* template_name) {
+  if (_mktemp(template_name) == nullptr) {
+    return -1;
+  }
+  // Use open() to match the close() that TemporaryFile's destructor does.
+  // Note that on Windows, this does CR/LF translation and _setmode() should
+  // be used to change that if appropriate.
+  return open(template_name, O_CREAT | O_EXCL | O_RDWR, S_IRUSR | S_IWUSR);
+}
+
+char* mkdtemp(char* template_name) {
+  if (_mktemp(template_name) == nullptr) {
+    return nullptr;
+  }
+  if (_mkdir(template_name) == -1) {
+    return nullptr;
+  }
+  return template_name;
+}
 #endif
+
+static std::string GetSystemTempDir() {
+#if defined(__ANDROID__)
+  return "/data/local/tmp";
+#elif defined(_WIN32)
+  char tmp_dir[MAX_PATH];
+  DWORD result = GetTempPathA(sizeof(tmp_dir), tmp_dir);
+  CHECK_NE(result, 0ul) << "GetTempPathA failed, error: " << GetLastError();
+  CHECK_LT(result, sizeof(tmp_dir)) << "path truncated to: " << result;
+
+  // GetTempPath() returns a path with a trailing slash, but init()
+  // does not expect that, so remove it.
+  CHECK_EQ(tmp_dir[result - 1], '\\');
+  tmp_dir[result - 1] = '\0';
+  return tmp_dir;
+#else
+  return "/tmp";
+#endif
+}
+
+TemporaryFile::TemporaryFile() {
+  init(GetSystemTempDir());
 }
 
 TemporaryFile::~TemporaryFile() {
   close(fd);
-  unlink(filename);
+  unlink(path);
 }
 
-void TemporaryFile::init(const char* tmp_dir) {
-  snprintf(filename, sizeof(filename), "%s/TemporaryFile-XXXXXX", tmp_dir);
-#if !defined(_WIN32)
-  fd = mkstemp(filename);
-#else
-  // Windows doesn't have mkstemp, and tmpfile creates the file in the root
-  // directory, requiring root (?!) permissions. We have to settle for mktemp.
-  if (mktemp(filename) == nullptr) {
-    abort();
-  }
+void TemporaryFile::init(const std::string& tmp_dir) {
+  snprintf(path, sizeof(path), "%s%cTemporaryFile-XXXXXX", tmp_dir.c_str(),
+           OS_PATH_SEPARATOR);
+  fd = mkstemp(path);
+}
 
-  fd = open(filename, O_RDWR | O_NOINHERIT | O_CREAT, _S_IREAD | _S_IWRITE);
-#endif
+TemporaryDir::TemporaryDir() {
+  init(GetSystemTempDir());
+}
+
+TemporaryDir::~TemporaryDir() {
+  rmdir(path);
+}
+
+bool TemporaryDir::init(const std::string& tmp_dir) {
+  snprintf(path, sizeof(path), "%s%cTemporaryDir-XXXXXX", tmp_dir.c_str(),
+           OS_PATH_SEPARATOR);
+  return (mkdtemp(path) != nullptr);
 }
diff --git a/crash_reporter/.project_alias b/crash_reporter/.project_alias
new file mode 100644
index 0000000..0bc3798
--- /dev/null
+++ b/crash_reporter/.project_alias
@@ -0,0 +1 @@
+crash
diff --git a/crash_reporter/99-crash-reporter.rules b/crash_reporter/99-crash-reporter.rules
new file mode 100644
index 0000000..aea5b1c
--- /dev/null
+++ b/crash_reporter/99-crash-reporter.rules
@@ -0,0 +1,6 @@
+ACTION=="change", SUBSYSTEM=="drm", KERNEL=="card0", ENV{ERROR}=="1", RUN+="/sbin/crash_reporter --udev=KERNEL=card0:SUBSYSTEM=drm:ACTION=change"
+# For detecting cypress trackpad issue. Passing into crash_reporter SUBSYSTEM=i2c-cyapa since crash_reporter does not handle DRIVER string.
+ACTION=="change", SUBSYSTEM=="i2c", DRIVER=="cyapa", ENV{ERROR}=="1", RUN+="/sbin/crash_reporter --udev=SUBSYSTEM=i2c-cyapa:ACTION=change"
+# For detecting Atmel trackpad/touchscreen issue. Passing into crash_reporter SUBSYSTEM=i2c-atmel_mxt_ts since crash_reporter does not handle DRIVER string.
+ACTION=="change", SUBSYSTEM=="i2c", DRIVER=="atmel_mxt_ts", ENV{ERROR}=="1", RUN+="/sbin/crash_reporter --udev=SUBSYSTEM=i2c-atmel_mxt_ts:ACTION=change"
+ACTION=="add", SUBSYSTEM=="devcoredump", RUN+="/sbin/crash_reporter --udev=SUBSYSTEM=devcoredump:ACTION=add:KERNEL_NUMBER=%n"
diff --git a/crash_reporter/MODULE_LICENSE_BSD b/crash_reporter/MODULE_LICENSE_BSD
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/crash_reporter/MODULE_LICENSE_BSD
diff --git a/crash_reporter/NOTICE b/crash_reporter/NOTICE
new file mode 100644
index 0000000..b9e779f
--- /dev/null
+++ b/crash_reporter/NOTICE
@@ -0,0 +1,27 @@
+// Copyright 2014 The Chromium OS Authors. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/crash_reporter/OWNERS b/crash_reporter/OWNERS
new file mode 100644
index 0000000..96ea5b2
--- /dev/null
+++ b/crash_reporter/OWNERS
@@ -0,0 +1,2 @@
+set noparent
+vapier@chromium.org
diff --git a/crash_reporter/TEST_WARNING b/crash_reporter/TEST_WARNING
new file mode 100644
index 0000000..64ad2e9
--- /dev/null
+++ b/crash_reporter/TEST_WARNING
@@ -0,0 +1,31 @@
+Apr 31 25:25:25 localhost kernel: [117959.226729]  [<ffffffff810e16bf>] do_vfs_ioctl+0x469/0x4b3
+Apr 31 25:25:25 localhost kernel: [117959.226738]  [<ffffffff810d3117>] ? fsnotify_access+0x58/0x60
+Apr 31 25:25:25 localhost kernel: [117959.226747]  [<ffffffff810d3791>] ? vfs_read+0xad/0xd7
+Apr 31 25:25:25 localhost kernel: [117959.226756]  [<ffffffff810e175f>] sys_ioctl+0x56/0x7b
+Apr 31 25:25:25 localhost kernel: [117959.226765]  [<ffffffff810d37fe>] ? sys_read+0x43/0x73
+Apr 31 25:25:25 localhost kernel: [117959.226774]  [<ffffffff8146b7d2>] system_call_fastpath+0x16/0x1b
+Apr 31 25:25:25 localhost kernel: [117959.226782] ---[ end trace f16822cad7406cec ]---
+Apr 31 25:25:25 localhost kernel: [117959.231085] ------------[ cut here ]------------
+Apr 31 25:25:25 localhost kernel: [117959.231100] WARNING: at /mnt/host/source/src/third_party/kernel/files/drivers/gpu/drm/i915/intel_dp.c:351 intel_dp_check_edp+0x6b/0xb9()
+Apr 31 25:25:25 localhost kernel: [117959.231113] Hardware name: Link
+Apr 31 25:25:25 localhost kernel: [117959.231117] eDP powered off while attempting aux channel communication.
+Apr 31 25:25:25 localhost kernel: [117959.231240] Pid: 10508, comm: X Tainted: G        WC   3.4.0 #1
+Apr 31 25:25:25 localhost kernel: [117959.231247] Call Trace:
+Apr 31 25:25:25 localhost kernel: [117959.231393]  [<ffffffff810d3117>] ? fsnotify_access+0x58/0x60
+Apr 31 25:25:25 localhost kernel: [117959.231402]  [<ffffffff810d3791>] ? vfs_read+0xad/0xd7
+Apr 31 25:25:25 localhost kernel: [117959.231411]  [<ffffffff810e175f>] sys_ioctl+0x56/0x7b
+Apr 31 25:25:25 localhost kernel: [117959.231420]  [<ffffffff810d37fe>] ? sys_read+0x43/0x73
+Apr 31 25:25:25 localhost kernel: [117959.231431]  [<ffffffff8146b7d2>] system_call_fastpath+0x16/0x1b
+Apr 31 25:25:25 localhost kernel: [117959.231439] ---[ end trace f16822cad7406ced ]---
+Apr 31 25:25:25 localhost kernel: [117959.231450] ------------[ cut here ]------------
+Apr 31 25:25:25 localhost kernel: [117959.231458] BARNING: at /mnt/host/source/src/third_party/kernel/files/drivers/gpu/drm/i915/intel_dp.c:351 intel_dp_check_edp+0x6b/0xb9()
+Apr 31 25:25:25 localhost kernel: [117959.231458] ("BARNING" above is intentional)
+Apr 31 25:25:25 localhost kernel: [117959.231471] Hardware name: Link
+Apr 31 25:25:25 localhost kernel: [117959.231475] eDP powered off while attempting aux channel communication.
+Apr 31 25:25:25 localhost kernel: [117959.231482] Modules linked in: nls_iso8859_1 nls_cp437 vfat fat rfcomm i2c_dev ath9k_btcoex snd_hda_codec_hdmi snd_hda_codec_ca0132 mac80211 snd_hda_intel ath9k_common_btcoex snd_hda_codec ath9k_hw_btcoex aesni_intel cryptd snd_hwdep ath snd_pcm aes_x86_64 isl29018(C) memconsole snd_timer snd_page_alloc industrialio(C) cfg80211 rtc_cmos nm10_gpio zram(C) zsmalloc(C) lzo_decompress lzo_compress fuse nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables xt_mark option usb_wwan cdc_ether usbnet ath3k btusb bluetooth uvcvideo videobuf2_core videodev videobuf2_vmalloc videobuf2_memops joydev
+Apr 31 25:25:25 localhost kernel: [117959.231588] Pid: 10508, comm: X Tainted: G        WC   3.4.0 #1
+Apr 31 25:25:25 localhost kernel: [117959.231595] Call Trace:
+Apr 31 25:25:25 localhost kernel: [117959.231601]  [<ffffffff8102a931>] warn_slowpath_common+0x83/0x9c
+Apr 31 25:25:25 localhost kernel: [117959.231610]  [<ffffffff8102a9ed>] warn_slowpath_fmt+0x46/0x48
+Apr 31 25:25:25 localhost kernel: [117959.231620]  [<ffffffff812af495>] intel_dp_check_edp+0x6b/0xb9
+Apr 31 25:25:25 localhost kernel: [117959.231629]  [<ffffffff8102a9ed>] ? warn_slowpath_fmt+
diff --git a/crash_reporter/crash_collector.cc b/crash_reporter/crash_collector.cc
new file mode 100644
index 0000000..69fe939
--- /dev/null
+++ b/crash_reporter/crash_collector.cc
@@ -0,0 +1,436 @@
+// Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "crash_collector.h"
+
+#include <dirent.h>
+#include <fcntl.h>  // For file creation modes.
+#include <inttypes.h>
+#include <linux/limits.h>  // PATH_MAX
+#include <pwd.h>  // For struct passwd.
+#include <sys/types.h>  // for mode_t.
+#include <sys/wait.h>  // For waitpid.
+#include <unistd.h>  // For execv and fork.
+
+#include <set>
+#include <utility>
+#include <vector>
+
+#include <base/files/file_util.h>
+#include <base/logging.h>
+#include <base/posix/eintr_wrapper.h>
+#include <base/strings/string_split.h>
+#include <base/strings/string_util.h>
+#include <base/strings/stringprintf.h>
+#include <chromeos/key_value_store.h>
+#include <chromeos/process.h>
+
+namespace {
+
+const char kCollectChromeFile[] =
+    "/mnt/stateful_partition/etc/collect_chrome_crashes";
+const char kCrashTestInProgressPath[] = "/tmp/crash-test-in-progress";
+const char kDefaultLogConfig[] = "/etc/crash_reporter_logs.conf";
+const char kDefaultUserName[] = "chronos";
+const char kLeaveCoreFile[] = "/root/.leave_core";
+const char kLsbRelease[] = "/etc/lsb-release";
+const char kShellPath[] = "/bin/sh";
+const char kSystemCrashPath[] = "/var/spool/crash";
+const char kUploadVarPrefix[] = "upload_var_";
+const char kUploadFilePrefix[] = "upload_file_";
+
+// Key of the lsb-release entry containing the OS version.
+const char kLsbVersionKey[] = "CHROMEOS_RELEASE_VERSION";
+
+// Normally this path is not used.  Unfortunately, there are a few edge cases
+// where we need this.  Any process that runs as kDefaultUserName that crashes
+// is consider a "user crash".  That includes the initial Chrome browser that
+// runs the login screen.  If that blows up, there is no logged in user yet,
+// so there is no per-user dir for us to stash things in.  Instead we fallback
+// to this path as it is at least encrypted on a per-system basis.
+//
+// This also comes up when running autotests.  The GUI is sitting at the login
+// screen while tests are sshing in, changing users, and triggering crashes as
+// the user (purposefully).
+const char kFallbackUserCrashPath[] = "/home/chronos/crash";
+
+// Directory mode of the user crash spool directory.
+const mode_t kUserCrashPathMode = 0755;
+
+// Directory mode of the system crash spool directory.
+const mode_t kSystemCrashPathMode = 01755;
+
+const uid_t kRootOwner = 0;
+const uid_t kRootGroup = 0;
+
+}  // namespace
+
+// Maximum crash reports per crash spool directory.  Note that this is
+// a separate maximum from the maximum rate at which we upload these
+// diagnostics.  The higher this rate is, the more space we allow for
+// core files, minidumps, and kcrash logs, and equivalently the more
+// processor and I/O bandwidth we dedicate to handling these crashes when
+// many occur at once.  Also note that if core files are configured to
+// be left on the file system, we stop adding crashes when either the
+// number of core files or minidumps reaches this number.
+const int CrashCollector::kMaxCrashDirectorySize = 32;
+
+using base::FilePath;
+using base::StringPrintf;
+
+CrashCollector::CrashCollector()
+    : lsb_release_(kLsbRelease),
+      log_config_path_(kDefaultLogConfig) {
+}
+
+CrashCollector::~CrashCollector() {
+}
+
+void CrashCollector::Initialize(
+    CrashCollector::CountCrashFunction count_crash_function,
+    CrashCollector::IsFeedbackAllowedFunction is_feedback_allowed_function) {
+  CHECK(count_crash_function);
+  CHECK(is_feedback_allowed_function);
+
+  count_crash_function_ = count_crash_function;
+  is_feedback_allowed_function_ = is_feedback_allowed_function;
+}
+
+int CrashCollector::WriteNewFile(const FilePath &filename,
+                                 const char *data,
+                                 int size) {
+  int fd = HANDLE_EINTR(open(filename.value().c_str(),
+                             O_CREAT | O_WRONLY | O_TRUNC | O_EXCL, 0666));
+  if (fd < 0) {
+    return -1;
+  }
+
+  int rv = base::WriteFileDescriptor(fd, data, size) ? size : -1;
+  IGNORE_EINTR(close(fd));
+  return rv;
+}
+
+std::string CrashCollector::Sanitize(const std::string &name) {
+  // Make sure the sanitized name does not include any periods.
+  // The logic in crash_sender relies on this.
+  std::string result = name;
+  for (size_t i = 0; i < name.size(); ++i) {
+    if (!isalnum(result[i]) && result[i] != '_')
+      result[i] = '_';
+  }
+  return result;
+}
+
+std::string CrashCollector::FormatDumpBasename(const std::string &exec_name,
+                                               time_t timestamp,
+                                               pid_t pid) {
+  struct tm tm;
+  localtime_r(&timestamp, &tm);
+  std::string sanitized_exec_name = Sanitize(exec_name);
+  return StringPrintf("%s.%04d%02d%02d.%02d%02d%02d.%d",
+                      sanitized_exec_name.c_str(),
+                      tm.tm_year + 1900,
+                      tm.tm_mon + 1,
+                      tm.tm_mday,
+                      tm.tm_hour,
+                      tm.tm_min,
+                      tm.tm_sec,
+                      pid);
+}
+
+FilePath CrashCollector::GetCrashPath(const FilePath &crash_directory,
+                                      const std::string &basename,
+                                      const std::string &extension) {
+  return crash_directory.Append(StringPrintf("%s.%s",
+                                             basename.c_str(),
+                                             extension.c_str()));
+}
+
+FilePath CrashCollector::GetCrashDirectoryInfo(
+    uid_t process_euid,
+    uid_t default_user_id,
+    gid_t default_user_group,
+    mode_t *mode,
+    uid_t *directory_owner,
+    gid_t *directory_group) {
+  if (process_euid == default_user_id) {
+    *mode = kUserCrashPathMode;
+    *directory_owner = default_user_id;
+    *directory_group = default_user_group;
+    return FilePath(kFallbackUserCrashPath);
+  } else {
+    *mode = kSystemCrashPathMode;
+    *directory_owner = kRootOwner;
+    *directory_group = kRootGroup;
+    return FilePath(kSystemCrashPath);
+  }
+}
+
+bool CrashCollector::GetUserInfoFromName(const std::string &name,
+                                         uid_t *uid,
+                                         gid_t *gid) {
+  char storage[256];
+  struct passwd passwd_storage;
+  struct passwd *passwd_result = nullptr;
+
+  if (getpwnam_r(name.c_str(), &passwd_storage, storage, sizeof(storage),
+                 &passwd_result) != 0 || passwd_result == nullptr) {
+    LOG(ERROR) << "Cannot find user named " << name;
+    return false;
+  }
+
+  *uid = passwd_result->pw_uid;
+  *gid = passwd_result->pw_gid;
+  return true;
+}
+
+bool CrashCollector::GetCreatedCrashDirectoryByEuid(uid_t euid,
+                                                    FilePath *crash_directory,
+                                                    bool *out_of_capacity) {
+  uid_t default_user_id;
+  gid_t default_user_group;
+
+  if (out_of_capacity) *out_of_capacity = false;
+
+  // For testing.
+  if (!forced_crash_directory_.empty()) {
+    *crash_directory = forced_crash_directory_;
+    return true;
+  }
+
+  if (!GetUserInfoFromName(kDefaultUserName,
+                           &default_user_id,
+                           &default_user_group)) {
+    LOG(ERROR) << "Could not find default user info";
+    return false;
+  }
+  mode_t directory_mode;
+  uid_t directory_owner;
+  gid_t directory_group;
+  *crash_directory =
+      GetCrashDirectoryInfo(euid,
+                            default_user_id,
+                            default_user_group,
+                            &directory_mode,
+                            &directory_owner,
+                            &directory_group);
+
+  if (!base::PathExists(*crash_directory)) {
+    // Create the spool directory with the appropriate mode (regardless of
+    // umask) and ownership.
+    mode_t old_mask = umask(0);
+    if (mkdir(crash_directory->value().c_str(), directory_mode) < 0 ||
+        chown(crash_directory->value().c_str(),
+              directory_owner,
+              directory_group) < 0) {
+      LOG(ERROR) << "Unable to create appropriate crash directory";
+      return false;
+    }
+    umask(old_mask);
+  }
+
+  if (!base::PathExists(*crash_directory)) {
+    LOG(ERROR) << "Unable to create crash directory "
+               << crash_directory->value().c_str();
+    return false;
+  }
+
+  if (!CheckHasCapacity(*crash_directory)) {
+    if (out_of_capacity) *out_of_capacity = true;
+    return false;
+  }
+
+  return true;
+}
+
+FilePath CrashCollector::GetProcessPath(pid_t pid) {
+  return FilePath(StringPrintf("/proc/%d", pid));
+}
+
+bool CrashCollector::GetSymlinkTarget(const FilePath &symlink,
+                                      FilePath *target) {
+  ssize_t max_size = 64;
+  std::vector<char> buffer;
+
+  while (true) {
+    buffer.resize(max_size + 1);
+    ssize_t size = readlink(symlink.value().c_str(), buffer.data(), max_size);
+    if (size < 0) {
+      int saved_errno = errno;
+      LOG(ERROR) << "Readlink failed on " << symlink.value() << " with "
+                 << saved_errno;
+      return false;
+    }
+
+    buffer[size] = 0;
+    if (size == max_size) {
+      max_size *= 2;
+      if (max_size > PATH_MAX) {
+        return false;
+      }
+      continue;
+    }
+    break;
+  }
+
+  *target = FilePath(buffer.data());
+  return true;
+}
+
+bool CrashCollector::GetExecutableBaseNameFromPid(pid_t pid,
+                                                 std::string *base_name) {
+  FilePath target;
+  FilePath process_path = GetProcessPath(pid);
+  FilePath exe_path = process_path.Append("exe");
+  if (!GetSymlinkTarget(exe_path, &target)) {
+    LOG(INFO) << "GetSymlinkTarget failed - Path " << process_path.value()
+              << " DirectoryExists: "
+              << base::DirectoryExists(process_path);
+    // Try to further diagnose exe readlink failure cause.
+    struct stat buf;
+    int stat_result = stat(exe_path.value().c_str(), &buf);
+    int saved_errno = errno;
+    if (stat_result < 0) {
+      LOG(INFO) << "stat " << exe_path.value() << " failed: " << stat_result
+                << " " << saved_errno;
+    } else {
+      LOG(INFO) << "stat " << exe_path.value() << " succeeded: st_mode="
+                << buf.st_mode;
+    }
+    return false;
+  }
+  *base_name = target.BaseName().value();
+  return true;
+}
+
+// Return true if the given crash directory has not already reached
+// maximum capacity.
+bool CrashCollector::CheckHasCapacity(const FilePath &crash_directory) {
+  DIR* dir = opendir(crash_directory.value().c_str());
+  if (!dir) {
+    return false;
+  }
+  struct dirent ent_buf;
+  struct dirent* ent;
+  bool full = false;
+  std::set<std::string> basenames;
+  while (readdir_r(dir, &ent_buf, &ent) == 0 && ent) {
+    if ((strcmp(ent->d_name, ".") == 0) ||
+        (strcmp(ent->d_name, "..") == 0))
+      continue;
+
+    std::string filename(ent->d_name);
+    size_t last_dot = filename.rfind(".");
+    std::string basename;
+    // If there is a valid looking extension, use the base part of the
+    // name.  If the only dot is the first byte (aka a dot file), treat
+    // it as unique to avoid allowing a directory full of dot files
+    // from accumulating.
+    if (last_dot != std::string::npos && last_dot != 0)
+      basename = filename.substr(0, last_dot);
+    else
+      basename = filename;
+    basenames.insert(basename);
+
+    if (basenames.size() >= static_cast<size_t>(kMaxCrashDirectorySize)) {
+      LOG(WARNING) << "Crash directory " << crash_directory.value()
+                   << " already full with " << kMaxCrashDirectorySize
+                   << " pending reports";
+      full = true;
+      break;
+    }
+  }
+  closedir(dir);
+  return !full;
+}
+
+bool CrashCollector::GetLogContents(const FilePath &config_path,
+                                    const std::string &exec_name,
+                                    const FilePath &output_file) {
+  chromeos::KeyValueStore store;
+  if (!store.Load(config_path)) {
+    LOG(INFO) << "Unable to read log configuration file "
+              << config_path.value();
+    return false;
+  }
+
+  std::string command;
+  if (!store.GetString(exec_name, &command))
+    return false;
+
+  chromeos::ProcessImpl diag_process;
+  diag_process.AddArg(kShellPath);
+  diag_process.AddStringOption("-c", command);
+  diag_process.RedirectOutput(output_file.value());
+
+  const int result = diag_process.Run();
+  if (result != 0) {
+    LOG(INFO) << "Log command \"" << command << "\" exited with " << result;
+    return false;
+  }
+  return true;
+}
+
+void CrashCollector::AddCrashMetaData(const std::string &key,
+                                      const std::string &value) {
+  extra_metadata_.append(StringPrintf("%s=%s\n", key.c_str(), value.c_str()));
+}
+
+void CrashCollector::AddCrashMetaUploadFile(const std::string &key,
+                                            const std::string &path) {
+  if (!path.empty())
+    AddCrashMetaData(kUploadFilePrefix + key, path);
+}
+
+void CrashCollector::AddCrashMetaUploadData(const std::string &key,
+                                            const std::string &value) {
+  if (!value.empty())
+    AddCrashMetaData(kUploadVarPrefix + key, value);
+}
+
+void CrashCollector::WriteCrashMetaData(const FilePath &meta_path,
+                                        const std::string &exec_name,
+                                        const std::string &payload_path) {
+  chromeos::KeyValueStore store;
+  if (!store.Load(FilePath(lsb_release_))) {
+    LOG(ERROR) << "Problem parsing " << lsb_release_;
+    // Even though there was some failure, take as much as we could read.
+  }
+
+  std::string version("unknown");
+  if (!store.GetString(kLsbVersionKey, &version)) {
+    LOG(ERROR) << "Unable to read " << kLsbVersionKey << " from "
+               << lsb_release_;
+  }
+  int64_t payload_size = -1;
+  base::GetFileSize(FilePath(payload_path), &payload_size);
+  std::string meta_data = StringPrintf("%sexec_name=%s\n"
+                                       "ver=%s\n"
+                                       "payload=%s\n"
+                                       "payload_size=%" PRId64 "\n"
+                                       "done=1\n",
+                                       extra_metadata_.c_str(),
+                                       exec_name.c_str(),
+                                       version.c_str(),
+                                       payload_path.c_str(),
+                                       payload_size);
+  // We must use WriteNewFile instead of base::WriteFile as we
+  // do not want to write with root access to a symlink that an attacker
+  // might have created.
+  if (WriteNewFile(meta_path, meta_data.c_str(), meta_data.size()) < 0) {
+    LOG(ERROR) << "Unable to write " << meta_path.value();
+  }
+}
+
+bool CrashCollector::IsCrashTestInProgress() {
+  return base::PathExists(FilePath(kCrashTestInProgressPath));
+}
+
+bool CrashCollector::IsDeveloperImage() {
+  // If we're testing crash reporter itself, we don't want to special-case
+  // for developer images.
+  if (IsCrashTestInProgress())
+    return false;
+  return base::PathExists(FilePath(kLeaveCoreFile));
+}
diff --git a/crash_reporter/crash_collector.h b/crash_reporter/crash_collector.h
new file mode 100644
index 0000000..0d335cd
--- /dev/null
+++ b/crash_reporter/crash_collector.h
@@ -0,0 +1,159 @@
+// Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CRASH_REPORTER_CRASH_COLLECTOR_H_
+#define CRASH_REPORTER_CRASH_COLLECTOR_H_
+
+#include <sys/stat.h>
+
+#include <map>
+#include <string>
+
+#include <base/files/file_path.h>
+#include <base/macros.h>
+#include <gtest/gtest_prod.h>  // for FRIEND_TEST
+
+// User crash collector.
+class CrashCollector {
+ public:
+  typedef void (*CountCrashFunction)();
+  typedef bool (*IsFeedbackAllowedFunction)();
+
+  CrashCollector();
+
+  virtual ~CrashCollector();
+
+  // Initialize the crash collector for detection of crashes, given a
+  // crash counting function, and metrics collection enabled oracle.
+  void Initialize(CountCrashFunction count_crash,
+                  IsFeedbackAllowedFunction is_metrics_allowed);
+
+ protected:
+  friend class CrashCollectorTest;
+  FRIEND_TEST(ChromeCollectorTest, HandleCrash);
+  FRIEND_TEST(CrashCollectorTest, CheckHasCapacityCorrectBasename);
+  FRIEND_TEST(CrashCollectorTest, CheckHasCapacityStrangeNames);
+  FRIEND_TEST(CrashCollectorTest, CheckHasCapacityUsual);
+  FRIEND_TEST(CrashCollectorTest, GetCrashDirectoryInfo);
+  FRIEND_TEST(CrashCollectorTest, GetCrashPath);
+  FRIEND_TEST(CrashCollectorTest, GetLogContents);
+  FRIEND_TEST(CrashCollectorTest, ForkExecAndPipe);
+  FRIEND_TEST(CrashCollectorTest, FormatDumpBasename);
+  FRIEND_TEST(CrashCollectorTest, Initialize);
+  FRIEND_TEST(CrashCollectorTest, MetaData);
+  FRIEND_TEST(CrashCollectorTest, Sanitize);
+  FRIEND_TEST(CrashCollectorTest, WriteNewFile);
+  FRIEND_TEST(ForkExecAndPipeTest, Basic);
+  FRIEND_TEST(ForkExecAndPipeTest, NonZeroReturnValue);
+  FRIEND_TEST(ForkExecAndPipeTest, BadOutputFile);
+  FRIEND_TEST(ForkExecAndPipeTest, ExistingOutputFile);
+  FRIEND_TEST(ForkExecAndPipeTest, BadExecutable);
+  FRIEND_TEST(ForkExecAndPipeTest, StderrCaptured);
+  FRIEND_TEST(ForkExecAndPipeTest, NULLParam);
+  FRIEND_TEST(ForkExecAndPipeTest, NoParams);
+  FRIEND_TEST(ForkExecAndPipeTest, SegFaultHandling);
+
+  // Set maximum enqueued crashes in a crash directory.
+  static const int kMaxCrashDirectorySize;
+
+  // Writes |data| of |size| to |filename|, which must be a new file.
+  // If the file already exists or writing fails, return a negative value.
+  // Otherwise returns the number of bytes written.
+  int WriteNewFile(const base::FilePath &filename, const char *data, int size);
+
+  // Return a filename that has only [a-z0-1_] characters by mapping
+  // all others into '_'.
+  std::string Sanitize(const std::string &name);
+
+  // For testing, set the directory always returned by
+  // GetCreatedCrashDirectoryByEuid.
+  void ForceCrashDirectory(const base::FilePath &forced_directory) {
+    forced_crash_directory_ = forced_directory;
+  }
+
+  base::FilePath GetCrashDirectoryInfo(uid_t process_euid,
+                                 uid_t default_user_id,
+                                 gid_t default_user_group,
+                                 mode_t *mode,
+                                 uid_t *directory_owner,
+                                 gid_t *directory_group);
+  bool GetUserInfoFromName(const std::string &name,
+                           uid_t *uid,
+                           gid_t *gid);
+
+  // Determines the crash directory for given euid, and creates the
+  // directory if necessary with appropriate permissions.  If
+  // |out_of_capacity| is not nullptr, it is set to indicate if the call
+  // failed due to not having capacity in the crash directory. Returns
+  // true whether or not directory needed to be created, false on any
+  // failure.  If the crash directory is at capacity, returns false.
+  bool GetCreatedCrashDirectoryByEuid(uid_t euid,
+                                      base::FilePath *crash_file_path,
+                                      bool *out_of_capacity);
+
+  // Format crash name based on components.
+  std::string FormatDumpBasename(const std::string &exec_name,
+                                 time_t timestamp,
+                                 pid_t pid);
+
+  // Create a file path to a file in |crash_directory| with the given
+  // |basename| and |extension|.
+  base::FilePath GetCrashPath(const base::FilePath &crash_directory,
+                              const std::string &basename,
+                              const std::string &extension);
+
+  base::FilePath GetProcessPath(pid_t pid);
+  bool GetSymlinkTarget(const base::FilePath &symlink,
+                        base::FilePath *target);
+  bool GetExecutableBaseNameFromPid(pid_t pid,
+                                    std::string *base_name);
+
+  // Check given crash directory still has remaining capacity for another
+  // crash.
+  bool CheckHasCapacity(const base::FilePath &crash_directory);
+
+  // Write a log applicable to |exec_name| to |output_file| based on the
+  // log configuration file at |config_path|.
+  bool GetLogContents(const base::FilePath &config_path,
+                      const std::string &exec_name,
+                      const base::FilePath &output_file);
+
+  // Add non-standard meta data to the crash metadata file.  Call
+  // before calling WriteCrashMetaData.  Key must not contain "=" or
+  // "\n" characters.  Value must not contain "\n" characters.
+  void AddCrashMetaData(const std::string &key, const std::string &value);
+
+  // Add a file to be uploaded to the crash reporter server. The file must
+  // persist until the crash report is sent; ideally it should live in the same
+  // place as the .meta file, so it can be cleaned up automatically.
+  void AddCrashMetaUploadFile(const std::string &key, const std::string &path);
+
+  // Add non-standard meta data to the crash metadata file.
+  // Data added though this call will be uploaded to the crash reporter server,
+  // appearing as a form field.
+  void AddCrashMetaUploadData(const std::string &key, const std::string &value);
+
+  // Write a file of metadata about crash.
+  void WriteCrashMetaData(const base::FilePath &meta_path,
+                          const std::string &exec_name,
+                          const std::string &payload_path);
+
+  // Returns true if the a crash test is currently running.
+  bool IsCrashTestInProgress();
+  // Returns true if we should consider ourselves to be running on a
+  // developer image.
+  bool IsDeveloperImage();
+
+  CountCrashFunction count_crash_function_;
+  IsFeedbackAllowedFunction is_feedback_allowed_function_;
+  std::string extra_metadata_;
+  base::FilePath forced_crash_directory_;
+  std::string lsb_release_;
+  base::FilePath log_config_path_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(CrashCollector);
+};
+
+#endif  // CRASH_REPORTER_CRASH_COLLECTOR_H_
diff --git a/crash_reporter/crash_collector_test.cc b/crash_reporter/crash_collector_test.cc
new file mode 100644
index 0000000..13fb76a
--- /dev/null
+++ b/crash_reporter/crash_collector_test.cc
@@ -0,0 +1,287 @@
+// Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "crash_collector_test.h"
+
+#include <unistd.h>
+#include <utility>
+
+#include <base/files/file_util.h>
+#include <base/strings/string_util.h>
+#include <base/strings/stringprintf.h>
+#include <chromeos/syslog_logging.h>
+#include <gtest/gtest.h>
+
+#include "crash_collector.h"
+
+using base::FilePath;
+using base::StringPrintf;
+using chromeos::FindLog;
+using ::testing::Invoke;
+using ::testing::Return;
+
+namespace {
+
+void CountCrash() {
+  ADD_FAILURE();
+}
+
+bool IsMetrics() {
+  ADD_FAILURE();
+  return false;
+}
+
+}  // namespace
+
+class CrashCollectorTest : public ::testing::Test {
+ public:
+  void SetUp() {
+    EXPECT_CALL(collector_, SetUpDBus()).WillRepeatedly(Return());
+
+    collector_.Initialize(CountCrash, IsMetrics);
+    test_dir_ = FilePath("test");
+    base::CreateDirectory(test_dir_);
+    chromeos::ClearLog();
+  }
+
+  void TearDown() {
+    base::DeleteFile(test_dir_, true);
+  }
+
+  bool CheckHasCapacity();
+
+ protected:
+  CrashCollectorMock collector_;
+  FilePath test_dir_;
+};
+
+TEST_F(CrashCollectorTest, Initialize) {
+  ASSERT_TRUE(CountCrash == collector_.count_crash_function_);
+  ASSERT_TRUE(IsMetrics == collector_.is_feedback_allowed_function_);
+}
+
+TEST_F(CrashCollectorTest, WriteNewFile) {
+  FilePath test_file = test_dir_.Append("test_new");
+  const char kBuffer[] = "buffer";
+  EXPECT_EQ(strlen(kBuffer),
+            collector_.WriteNewFile(test_file,
+                                    kBuffer,
+                                    strlen(kBuffer)));
+  EXPECT_LT(collector_.WriteNewFile(test_file,
+                                    kBuffer,
+                                    strlen(kBuffer)), 0);
+}
+
+TEST_F(CrashCollectorTest, Sanitize) {
+  EXPECT_EQ("chrome", collector_.Sanitize("chrome"));
+  EXPECT_EQ("CHROME", collector_.Sanitize("CHROME"));
+  EXPECT_EQ("1chrome2", collector_.Sanitize("1chrome2"));
+  EXPECT_EQ("chrome__deleted_", collector_.Sanitize("chrome (deleted)"));
+  EXPECT_EQ("foo_bar", collector_.Sanitize("foo.bar"));
+  EXPECT_EQ("", collector_.Sanitize(""));
+  EXPECT_EQ("_", collector_.Sanitize(" "));
+}
+
+TEST_F(CrashCollectorTest, GetCrashDirectoryInfo) {
+  FilePath path;
+  const int kRootUid = 0;
+  const int kRootGid = 0;
+  const int kNtpUid = 5;
+  const int kChronosUid = 1000;
+  const int kChronosGid = 1001;
+  const mode_t kExpectedSystemMode = 01755;
+  const mode_t kExpectedUserMode = 0755;
+
+  mode_t directory_mode;
+  uid_t directory_owner;
+  gid_t directory_group;
+
+  path = collector_.GetCrashDirectoryInfo(kRootUid,
+                                          kChronosUid,
+                                          kChronosGid,
+                                          &directory_mode,
+                                          &directory_owner,
+                                          &directory_group);
+  EXPECT_EQ("/var/spool/crash", path.value());
+  EXPECT_EQ(kExpectedSystemMode, directory_mode);
+  EXPECT_EQ(kRootUid, directory_owner);
+  EXPECT_EQ(kRootGid, directory_group);
+
+  path = collector_.GetCrashDirectoryInfo(kNtpUid,
+                                          kChronosUid,
+                                          kChronosGid,
+                                          &directory_mode,
+                                          &directory_owner,
+                                          &directory_group);
+  EXPECT_EQ("/var/spool/crash", path.value());
+  EXPECT_EQ(kExpectedSystemMode, directory_mode);
+  EXPECT_EQ(kRootUid, directory_owner);
+  EXPECT_EQ(kRootGid, directory_group);
+
+  path = collector_.GetCrashDirectoryInfo(kChronosUid,
+                                          kChronosUid,
+                                          kChronosGid,
+                                          &directory_mode,
+                                          &directory_owner,
+                                          &directory_group);
+  EXPECT_EQ("/var/spool/crash", path.value());
+  EXPECT_EQ(kExpectedUserMode, directory_mode);
+  EXPECT_EQ(kChronosUid, directory_owner);
+  EXPECT_EQ(kChronosGid, directory_group);
+}
+
+TEST_F(CrashCollectorTest, FormatDumpBasename) {
+  struct tm tm = {0};
+  tm.tm_sec = 15;
+  tm.tm_min = 50;
+  tm.tm_hour = 13;
+  tm.tm_mday = 23;
+  tm.tm_mon = 4;
+  tm.tm_year = 110;
+  tm.tm_isdst = -1;
+  std::string basename =
+      collector_.FormatDumpBasename("foo", mktime(&tm), 100);
+  ASSERT_EQ("foo.20100523.135015.100", basename);
+}
+
+TEST_F(CrashCollectorTest, GetCrashPath) {
+  EXPECT_EQ("/var/spool/crash/myprog.20100101.1200.1234.core",
+            collector_.GetCrashPath(FilePath("/var/spool/crash"),
+                                    "myprog.20100101.1200.1234",
+                                    "core").value());
+  EXPECT_EQ("/home/chronos/user/crash/chrome.20100101.1200.1234.dmp",
+            collector_.GetCrashPath(FilePath("/home/chronos/user/crash"),
+                                    "chrome.20100101.1200.1234",
+                                    "dmp").value());
+}
+
+
+bool CrashCollectorTest::CheckHasCapacity() {
+  static const char kFullMessage[] = "Crash directory test already full";
+  bool has_capacity = collector_.CheckHasCapacity(test_dir_);
+  bool has_message = FindLog(kFullMessage);
+  EXPECT_EQ(has_message, !has_capacity);
+  return has_capacity;
+}
+
+TEST_F(CrashCollectorTest, CheckHasCapacityUsual) {
+  // Test kMaxCrashDirectorySize - 1 non-meta files can be added.
+  for (int i = 0; i < CrashCollector::kMaxCrashDirectorySize - 1; ++i) {
+    base::WriteFile(test_dir_.Append(StringPrintf("file%d.core", i)), "", 0);
+    EXPECT_TRUE(CheckHasCapacity());
+  }
+
+  // Test an additional kMaxCrashDirectorySize - 1 meta files fit.
+  for (int i = 0; i < CrashCollector::kMaxCrashDirectorySize - 1; ++i) {
+    base::WriteFile(test_dir_.Append(StringPrintf("file%d.meta", i)), "", 0);
+    EXPECT_TRUE(CheckHasCapacity());
+  }
+
+  // Test an additional kMaxCrashDirectorySize meta files don't fit.
+  for (int i = 0; i < CrashCollector::kMaxCrashDirectorySize; ++i) {
+    base::WriteFile(test_dir_.Append(StringPrintf("overage%d.meta", i)), "", 0);
+    EXPECT_FALSE(CheckHasCapacity());
+  }
+}
+
+TEST_F(CrashCollectorTest, CheckHasCapacityCorrectBasename) {
+  // Test kMaxCrashDirectorySize - 1 files can be added.
+  for (int i = 0; i < CrashCollector::kMaxCrashDirectorySize - 1; ++i) {
+    base::WriteFile(test_dir_.Append(StringPrintf("file.%d.core", i)), "", 0);
+    EXPECT_TRUE(CheckHasCapacity());
+  }
+  base::WriteFile(test_dir_.Append("file.last.core"), "", 0);
+  EXPECT_FALSE(CheckHasCapacity());
+}
+
+TEST_F(CrashCollectorTest, CheckHasCapacityStrangeNames) {
+  // Test many files with different extensions and same base fit.
+  for (int i = 0; i < 5 * CrashCollector::kMaxCrashDirectorySize; ++i) {
+    base::WriteFile(test_dir_.Append(StringPrintf("a.%d", i)), "", 0);
+    EXPECT_TRUE(CheckHasCapacity());
+  }
+  // Test dot files are treated as individual files.
+  for (int i = 0; i < CrashCollector::kMaxCrashDirectorySize - 2; ++i) {
+    base::WriteFile(test_dir_.Append(StringPrintf(".file%d", i)), "", 0);
+    EXPECT_TRUE(CheckHasCapacity());
+  }
+  base::WriteFile(test_dir_.Append("normal.meta"), "", 0);
+  EXPECT_FALSE(CheckHasCapacity());
+}
+
+TEST_F(CrashCollectorTest, MetaData) {
+  const char kMetaFileBasename[] = "generated.meta";
+  FilePath meta_file = test_dir_.Append(kMetaFileBasename);
+  FilePath lsb_release = test_dir_.Append("lsb-release");
+  FilePath payload_file = test_dir_.Append("payload-file");
+  std::string contents;
+  collector_.lsb_release_ = lsb_release.value();
+  const char kLsbContents[] =
+      "CHROMEOS_RELEASE_BOARD=lumpy\n"
+      "CHROMEOS_RELEASE_VERSION=6727.0.2015_01_26_0853\n"
+      "CHROMEOS_RELEASE_NAME=Chromium OS\n";
+  ASSERT_TRUE(base::WriteFile(lsb_release, kLsbContents, strlen(kLsbContents)));
+  const char kPayload[] = "foo";
+  ASSERT_TRUE(base::WriteFile(payload_file, kPayload, strlen(kPayload)));
+  collector_.AddCrashMetaData("foo", "bar");
+  collector_.WriteCrashMetaData(meta_file, "kernel", payload_file.value());
+  EXPECT_TRUE(base::ReadFileToString(meta_file, &contents));
+  const char kExpectedMeta[] =
+      "foo=bar\n"
+      "exec_name=kernel\n"
+      "ver=6727.0.2015_01_26_0853\n"
+      "payload=test/payload-file\n"
+      "payload_size=3\n"
+      "done=1\n";
+  EXPECT_EQ(kExpectedMeta, contents);
+
+  // Test target of symlink is not overwritten.
+  payload_file = test_dir_.Append("payload2-file");
+  ASSERT_TRUE(base::WriteFile(payload_file, kPayload, strlen(kPayload)));
+  FilePath meta_symlink_path = test_dir_.Append("symlink.meta");
+  ASSERT_EQ(0,
+            symlink(kMetaFileBasename,
+                    meta_symlink_path.value().c_str()));
+  ASSERT_TRUE(base::PathExists(meta_symlink_path));
+  chromeos::ClearLog();
+  collector_.WriteCrashMetaData(meta_symlink_path,
+                                "kernel",
+                                payload_file.value());
+  // Target metadata contents should have stayed the same.
+  contents.clear();
+  EXPECT_TRUE(base::ReadFileToString(meta_file, &contents));
+  EXPECT_EQ(kExpectedMeta, contents);
+  EXPECT_TRUE(FindLog("Unable to write"));
+
+  // Test target of dangling symlink is not created.
+  base::DeleteFile(meta_file, false);
+  ASSERT_FALSE(base::PathExists(meta_file));
+  chromeos::ClearLog();
+  collector_.WriteCrashMetaData(meta_symlink_path, "kernel",
+                                payload_file.value());
+  EXPECT_FALSE(base::PathExists(meta_file));
+  EXPECT_TRUE(FindLog("Unable to write"));
+}
+
+TEST_F(CrashCollectorTest, GetLogContents) {
+  FilePath config_file = test_dir_.Append("crash_config");
+  FilePath output_file = test_dir_.Append("crash_log");
+  const char kConfigContents[] =
+      "foobar=echo hello there | \\\n  sed -e \"s/there/world/\"";
+  ASSERT_TRUE(
+      base::WriteFile(config_file, kConfigContents, strlen(kConfigContents)));
+  base::DeleteFile(FilePath(output_file), false);
+  EXPECT_FALSE(collector_.GetLogContents(config_file,
+                                         "barfoo",
+                                         output_file));
+  EXPECT_FALSE(base::PathExists(output_file));
+  base::DeleteFile(FilePath(output_file), false);
+  EXPECT_TRUE(collector_.GetLogContents(config_file,
+                                        "foobar",
+                                        output_file));
+  ASSERT_TRUE(base::PathExists(output_file));
+  std::string contents;
+  EXPECT_TRUE(base::ReadFileToString(output_file, &contents));
+  EXPECT_EQ("hello world\n", contents);
+}
diff --git a/crash_reporter/crash_collector_test.h b/crash_reporter/crash_collector_test.h
new file mode 100644
index 0000000..c875d44
--- /dev/null
+++ b/crash_reporter/crash_collector_test.h
@@ -0,0 +1,23 @@
+// Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CRASH_REPORTER_CRASH_COLLECTOR_TEST_H_
+#define CRASH_REPORTER_CRASH_COLLECTOR_TEST_H_
+
+#include "crash_collector.h"
+
+#include <map>
+#include <string>
+
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+
+class CrashCollectorMock : public CrashCollector {
+ public:
+  MOCK_METHOD0(SetUpDBus, void());
+  MOCK_METHOD1(GetActiveUserSessions,
+               bool(std::map<std::string, std::string> *sessions));
+};
+
+#endif  // CRASH_REPORTER_CRASH_COLLECTOR_TEST_H_
diff --git a/crash_reporter/crash_reporter.cc b/crash_reporter/crash_reporter.cc
new file mode 100644
index 0000000..0e45992
--- /dev/null
+++ b/crash_reporter/crash_reporter.cc
@@ -0,0 +1,297 @@
+// Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <fcntl.h>  // for open
+
+#include <string>
+#include <vector>
+
+#include <base/files/file_util.h>
+#include <base/logging.h>
+#include <base/strings/string_split.h>
+#include <base/strings/string_util.h>
+#include <base/strings/stringprintf.h>
+#include <chromeos/flag_helper.h>
+#include <chromeos/syslog_logging.h>
+#include <metrics/metrics_library.h>
+
+#include "kernel_collector.h"
+#include "kernel_warning_collector.h"
+#include "udev_collector.h"
+#include "unclean_shutdown_collector.h"
+#include "user_collector.h"
+
+static const char kCrashCounterHistogram[] = "Logging.CrashCounter";
+static const char kUserCrashSignal[] =
+    "org.chromium.CrashReporter.UserCrash";
+static const char kKernelCrashDetected[] = "/var/run/kernel-crash-detected";
+static const char kUncleanShutdownDetected[] =
+    "/var/run/unclean-shutdown-detected";
+
+// Enumeration of kinds of crashes to be used in the CrashCounter histogram.
+enum CrashKinds {
+  kCrashKindUncleanShutdown = 1,
+  kCrashKindUser = 2,
+  kCrashKindKernel = 3,
+  kCrashKindUdev = 4,
+  kCrashKindKernelWarning = 5,
+  kCrashKindMax
+};
+
+static MetricsLibrary s_metrics_lib;
+
+using base::FilePath;
+using base::StringPrintf;
+
+static bool IsFeedbackAllowed() {
+  return s_metrics_lib.AreMetricsEnabled();
+}
+
+static bool TouchFile(const FilePath &file_path) {
+  return base::WriteFile(file_path, "", 0) == 0;
+}
+
+static void SendCrashMetrics(CrashKinds type, const char* name) {
+  // TODO(kmixter): We can remove this histogram as part of
+  // crosbug.com/11163.
+  s_metrics_lib.SendEnumToUMA(kCrashCounterHistogram, type, kCrashKindMax);
+  s_metrics_lib.SendCrashToUMA(name);
+}
+
+static void CountKernelCrash() {
+  SendCrashMetrics(kCrashKindKernel, "kernel");
+}
+
+static void CountUdevCrash() {
+  SendCrashMetrics(kCrashKindUdev, "udevcrash");
+}
+
+static void CountUncleanShutdown() {
+  SendCrashMetrics(kCrashKindUncleanShutdown, "uncleanshutdown");
+}
+
+static void CountUserCrash() {
+  SendCrashMetrics(kCrashKindUser, "user");
+  std::string command = StringPrintf(
+      "/usr/bin/dbus-send --type=signal --system / \"%s\" &",
+      kUserCrashSignal);
+  // Announce through D-Bus whenever a user crash happens. This is
+  // used by the metrics daemon to log active use time between
+  // crashes.
+  //
+  // This could be done more efficiently by explicit fork/exec or
+  // using a dbus library directly. However, this should run
+  // relatively rarely and longer term we may need to implement a
+  // better way to do this that doesn't rely on D-Bus.
+  //
+  // We run in the background in case dbus daemon itself is crashed
+  // and not responding.  This allows us to not block and potentially
+  // deadlock on a dbus-daemon crash.  If dbus-daemon crashes without
+  // restarting, each crash will fork off a lot of dbus-send
+  // processes.  Such a system is in a unusable state and will need
+  // to be restarted anyway.
+
+  int status = system(command.c_str());
+  LOG_IF(WARNING, status != 0) << "dbus-send running failed";
+}
+
+
+static int Initialize(KernelCollector *kernel_collector,
+                      UserCollector *user_collector,
+                      UncleanShutdownCollector *unclean_shutdown_collector,
+                      const bool unclean_check,
+                      const bool clean_shutdown) {
+  CHECK(!clean_shutdown) << "Incompatible options";
+
+  bool was_kernel_crash = false;
+  bool was_unclean_shutdown = false;
+  kernel_collector->Enable();
+  if (kernel_collector->is_enabled()) {
+    was_kernel_crash = kernel_collector->Collect();
+  }
+
+  if (unclean_check) {
+    was_unclean_shutdown = unclean_shutdown_collector->Collect();
+  }
+
+  // Touch a file to notify the metrics daemon that a kernel
+  // crash has been detected so that it can log the time since
+  // the last kernel crash.
+  if (IsFeedbackAllowed()) {
+    if (was_kernel_crash) {
+      TouchFile(FilePath(kKernelCrashDetected));
+    } else if (was_unclean_shutdown) {
+      // We only count an unclean shutdown if it did not come with
+      // an associated kernel crash.
+      TouchFile(FilePath(kUncleanShutdownDetected));
+    }
+  }
+
+  // Must enable the unclean shutdown collector *after* collecting.
+  unclean_shutdown_collector->Enable();
+  user_collector->Enable();
+
+  return 0;
+}
+
+static int HandleUserCrash(UserCollector *user_collector,
+                           const std::string& user, const bool crash_test) {
+  // Handle a specific user space crash.
+  CHECK(!user.empty()) << "--user= must be set";
+
+  // Make it possible to test what happens when we crash while
+  // handling a crash.
+  if (crash_test) {
+    *(volatile char *)0 = 0;
+    return 0;
+  }
+
+  // Accumulate logs to help in diagnosing failures during user collection.
+  chromeos::LogToString(true);
+  // Handle the crash, get the name of the process from procfs.
+  bool handled = user_collector->HandleCrash(user, nullptr);
+  chromeos::LogToString(false);
+  if (!handled)
+    return 1;
+  return 0;
+}
+
+static int HandleUdevCrash(UdevCollector *udev_collector,
+                           const std::string& udev_event) {
+  // Handle a crash indicated by a udev event.
+  CHECK(!udev_event.empty()) << "--udev= must be set";
+
+  // Accumulate logs to help in diagnosing failures during user collection.
+  chromeos::LogToString(true);
+  bool handled = udev_collector->HandleCrash(udev_event);
+  chromeos::LogToString(false);
+  if (!handled)
+    return 1;
+  return 0;
+}
+
+static int HandleKernelWarning(KernelWarningCollector
+                               *kernel_warning_collector) {
+  // Accumulate logs to help in diagnosing failures during collection.
+  chromeos::LogToString(true);
+  bool handled = kernel_warning_collector->Collect();
+  chromeos::LogToString(false);
+  if (!handled)
+    return 1;
+  return 0;
+}
+
+// Interactive/diagnostics mode for generating kernel crash signatures.
+static int GenerateKernelSignature(KernelCollector *kernel_collector,
+                                   const std::string& kernel_signature_file) {
+  std::string kcrash_contents;
+  std::string signature;
+  if (!base::ReadFileToString(FilePath(kernel_signature_file),
+                              &kcrash_contents)) {
+    fprintf(stderr, "Could not read file.\n");
+    return 1;
+  }
+  if (!kernel_collector->ComputeKernelStackSignature(
+          kcrash_contents,
+          &signature,
+          true)) {
+    fprintf(stderr, "Signature could not be generated.\n");
+    return 1;
+  }
+  printf("Kernel crash signature is \"%s\".\n", signature.c_str());
+  return 0;
+}
+
+// Ensure stdout, stdin, and stderr are open file descriptors.  If
+// they are not, any code which writes to stderr/stdout may write out
+// to files opened during execution.  In particular, when
+// crash_reporter is run by the kernel coredump pipe handler (via
+// kthread_create/kernel_execve), it will not have file table entries
+// 1 and 2 (stdout and stderr) populated.  We populate them here.
+static void OpenStandardFileDescriptors() {
+  int new_fd = -1;
+  // We open /dev/null to fill in any of the standard [0, 2] file
+  // descriptors.  We leave these open for the duration of the
+  // process.  This works because open returns the lowest numbered
+  // invalid fd.
+  do {
+    new_fd = open("/dev/null", 0);
+    CHECK_GE(new_fd, 0) << "Unable to open /dev/null";
+  } while (new_fd >= 0 && new_fd <= 2);
+  close(new_fd);
+}
+
+int main(int argc, char *argv[]) {
+  DEFINE_bool(init, false, "Initialize crash logging");
+  DEFINE_bool(clean_shutdown, false, "Signal clean shutdown");
+  DEFINE_string(generate_kernel_signature, "",
+                "Generate signature from given kcrash file");
+  DEFINE_bool(crash_test, false, "Crash test");
+  DEFINE_string(user, "", "User crash info (pid:signal:exec_name)");
+  DEFINE_bool(unclean_check, true, "Check for unclean shutdown");
+  DEFINE_string(udev, "", "Udev event description (type:device:subsystem)");
+  DEFINE_bool(kernel_warning, false, "Report collected kernel warning");
+  DEFINE_string(pid, "", "PID of crashing process");
+  DEFINE_string(uid, "", "UID of crashing process");
+  DEFINE_string(exe, "", "Executable name of crashing process");
+  DEFINE_bool(core2md_failure, false, "Core2md failure test");
+  DEFINE_bool(directory_failure, false, "Spool directory failure test");
+  DEFINE_string(filter_in, "",
+                "Ignore all crashes but this for testing");
+
+  OpenStandardFileDescriptors();
+  FilePath my_path = base::MakeAbsoluteFilePath(FilePath(argv[0]));
+  s_metrics_lib.Init();
+  chromeos::FlagHelper::Init(argc, argv, "Chromium OS Crash Reporter");
+  chromeos::OpenLog(my_path.BaseName().value().c_str(), true);
+  chromeos::InitLog(chromeos::kLogToSyslog);
+
+  KernelCollector kernel_collector;
+  kernel_collector.Initialize(CountKernelCrash, IsFeedbackAllowed);
+  UserCollector user_collector;
+  user_collector.Initialize(CountUserCrash,
+                            my_path.value(),
+                            IsFeedbackAllowed,
+                            true,  // generate_diagnostics
+                            FLAGS_core2md_failure,
+                            FLAGS_directory_failure,
+                            FLAGS_filter_in);
+  UncleanShutdownCollector unclean_shutdown_collector;
+  unclean_shutdown_collector.Initialize(CountUncleanShutdown,
+                                        IsFeedbackAllowed);
+  UdevCollector udev_collector;
+  udev_collector.Initialize(CountUdevCrash, IsFeedbackAllowed);
+
+  KernelWarningCollector kernel_warning_collector;
+  kernel_warning_collector.Initialize(CountUdevCrash, IsFeedbackAllowed);
+
+  if (FLAGS_init) {
+    return Initialize(&kernel_collector,
+                      &user_collector,
+                      &unclean_shutdown_collector,
+                      FLAGS_unclean_check,
+                      FLAGS_clean_shutdown);
+  }
+
+  if (FLAGS_clean_shutdown) {
+    unclean_shutdown_collector.Disable();
+    user_collector.Disable();
+    return 0;
+  }
+
+  if (!FLAGS_generate_kernel_signature.empty()) {
+    return GenerateKernelSignature(&kernel_collector,
+                                   FLAGS_generate_kernel_signature);
+  }
+
+  if (!FLAGS_udev.empty()) {
+    return HandleUdevCrash(&udev_collector, FLAGS_udev);
+  }
+
+  if (FLAGS_kernel_warning) {
+    return HandleKernelWarning(&kernel_warning_collector);
+  }
+
+  return HandleUserCrash(&user_collector, FLAGS_user, FLAGS_crash_test);
+}
diff --git a/crash_reporter/crash_reporter_logs.conf b/crash_reporter/crash_reporter_logs.conf
new file mode 100644
index 0000000..f5ca80c
--- /dev/null
+++ b/crash_reporter/crash_reporter_logs.conf
@@ -0,0 +1,112 @@
+# Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can
+# be found in the LICENSE file.
+
+# This file is parsed by chromeos::KeyValueStore. It has the format:
+#
+# <basename>=<shell command>\n
+#
+# Commands may be split across multiple lines using trailing backslashes.
+#
+# When an executable named <basename> crashes, the corresponding command is
+# executed and its standard output and standard error are attached to the crash
+# report.
+#
+# Use caution in modifying this file. Only run common Unix commands here, as
+# these commands will be run when a crash has recently occurred and we should
+# avoid running anything that might cause another crash. Similarly, these
+# commands block notification of the crash to parent processes, so commands
+# should execute quickly.
+
+update_engine=cat $(ls -1tr /var/log/update_engine | tail -5 | \
+  sed s.^./var/log/update_engine/.) | tail -c 50000
+
+# The cros_installer output is logged into the update engine log file,
+# so it is handled in the same way as update_engine.
+cros_installer=cat $(ls -1tr /var/log/update_engine | tail -5 | \
+  sed s.^./var/log/update_engine/.) | tail -c 50000
+
+# Dump the last 20 lines of the last two files in Chrome's system and user log
+# directories, along with the last 20 messages from the session manager.
+chrome=\
+  for f in $(ls -1rt /var/log/chrome/chrome_[0-9]* | tail -2) \
+    $(ls -1rt /home/chronos/u-*/log/chrome_[0-9]* 2>/dev/null | tail -2); do \
+    echo "===$f (tail)==="; \
+    tail -20 $f; \
+    echo EOF; \
+    echo; \
+  done; \
+  echo "===session_manager (tail)==="; \
+  awk '$3 ~ "^session_manager\[" { print }' /var/log/messages | tail -20; \
+  echo EOF
+
+# The following rule is used for generating additional diagnostics when
+# collection of user crashes fails.  This output should not be too large
+# as it is stored in memory.  The output format specified for 'ps' is the
+# same as with the "u" ("user-oriented") option, except it doesn't show
+# the commands' arguments (i.e. "comm" instead of "command").
+crash_reporter-user-collection=\
+  echo "===ps output==="; \
+  ps axw -o user,pid,%cpu,%mem,vsz,rss,tname,stat,start_time,bsdtime,comm | \
+    tail -c 25000; \
+  echo "===meminfo==="; \
+  cat /proc/meminfo
+
+# This rule is similar to the crash_reporter-user-collection rule, except it is
+# run for kernel errors reported through udev events.
+crash_reporter-udev-collection-change-card0-drm=\
+  for dri in /sys/kernel/debug/dri/*; do \
+    echo "===$dri/i915_error_state==="; \
+    cat $dri/i915_error_state; \
+  done
+
+# When trackpad driver cyapa detects some abnormal behavior, we collect
+# additional logs from kernel messages.
+crash_reporter-udev-collection-change--i2c-cyapa=\
+  /usr/sbin/kernel_log_collector.sh cyapa 30
+# When trackpad/touchscreen driver atmel_mxt_ts detects some abnormal behavior,
+# we collect additional logs from kernel messages.
+crash_reporter-udev-collection-change--i2c-atmel_mxt_ts=\
+  /usr/sbin/kernel_log_collector.sh atmel 30
+# When touch device noise are detected, we collect relevant logs.
+# (crosbug.com/p/16788)
+crash_reporter-udev-collection---TouchNoise=cat /var/log/touch_noise.log
+# Periodically collect touch event log for debugging (crosbug.com/p/17244)
+crash_reporter-udev-collection---TouchEvent=cat /var/log/touch_event.log
+
+# Collect the last 50 lines of /var/log/messages and /var/log/net.log for
+# intel wifi driver (iwlwifi) for debugging purpose.
+crash_reporter-udev-collection-devcoredump-iwlwifi=\
+  echo "===/var/log/messages==="; \
+  tail -n 50 /var/log/messages; \
+  echo "===/var/log/net.log==="; \
+  tail -n 50 /var/log/net.log; \
+  echo EOF
+
+# Dump the last 50 lines of the last two powerd log files -- if the job has
+# already restarted, we want to see the end of the previous instance's logs.
+powerd=\
+  for f in $(ls -1tr /var/log/power_manager/powerd.[0-9]* | tail -2); do \
+    echo "===$(basename $f) (tail)==="; \
+    tail -50 $f; \
+    echo EOF; \
+  done
+# If power_supply_info aborts (due to e.g. a bad battery), its failure message
+# could end up in various places depending on which process was running it.
+# Attach the end of powerd's log since it might've also logged the underlying
+# problem.
+power_supply_info=\
+  echo "===powerd.LATEST (tail)==="; \
+  tail -50 /var/log/power_manager/powerd.LATEST; \
+  echo EOF
+# powerd_setuid_helper gets run by powerd, so its stdout/stderr will be mixed in
+# with powerd's stdout/stderr.
+powerd_setuid_helper=\
+  echo "===powerd.OUT (tail)==="; \
+  tail -50 /var/log/powerd.out; \
+  echo EOF
+
+# The following rules are only for testing purposes.
+crash_log_test=echo hello world
+crash_log_recursion_test=sleep 1 && \
+  /usr/local/autotest/tests/crash_log_recursion_test
diff --git a/crash_reporter/crash_reporter_logs_test.cc b/crash_reporter/crash_reporter_logs_test.cc
new file mode 100644
index 0000000..9879470
--- /dev/null
+++ b/crash_reporter/crash_reporter_logs_test.cc
@@ -0,0 +1,28 @@
+// Copyright 2015 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <string>
+
+#include <base/files/file_path.h>
+#include <chromeos/key_value_store.h>
+#include <gtest/gtest.h>
+
+namespace {
+
+// Name of the checked-in configuration file containing log-collection commands.
+const char kConfigFile[] = "crash_reporter_logs.conf";
+
+// Executable name for Chrome. kConfigFile is expected to contain this entry.
+const char kChromeExecName[] = "chrome";
+
+}  // namespace
+
+// Tests that the config file is parsable and that Chrome is listed.
+TEST(CrashReporterLogsTest, ReadConfig) {
+  chromeos::KeyValueStore store;
+  ASSERT_TRUE(store.Load(base::FilePath(kConfigFile)));
+  std::string command;
+  EXPECT_TRUE(store.GetString(kChromeExecName, &command));
+  EXPECT_FALSE(command.empty());
+}
diff --git a/crash_reporter/crash_sender b/crash_reporter/crash_sender
new file mode 100755
index 0000000..641ae2d
--- /dev/null
+++ b/crash_reporter/crash_sender
@@ -0,0 +1,713 @@
+#!/bin/sh
+
+# Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+set -e
+
+# Default product ID in crash report (used if GOOGLE_CRASH_* is undefined).
+CHROMEOS_PRODUCT=ChromeOS
+
+# File whose existence implies crash reports may be sent, and whose
+# contents includes our machine's anonymized guid.
+CONSENT_ID="/home/chronos/Consent To Send Stats"
+
+# Crash sender lock in case the sender is already running.
+CRASH_SENDER_LOCK="/var/lock/crash_sender"
+
+# Path to file that indicates a crash test is currently running.
+CRASH_TEST_IN_PROGRESS_FILE="/tmp/crash-test-in-progress"
+
+# Path to find which is required for computing the crash rate.
+FIND="/usr/bin/find"
+
+# Set this to 1 in the environment to allow uploading crash reports
+# for unofficial versions.
+FORCE_OFFICIAL=${FORCE_OFFICIAL:-0}
+
+# Path to hardware class description.
+HWCLASS_PATH="/sys/devices/platform/chromeos_acpi/HWID"
+
+# Path to file that indicates this is a developer image.
+LEAVE_CORE_FILE="/root/.leave_core"
+
+# Path to list_proxies.
+LIST_PROXIES="/usr/bin/list_proxies"
+
+# Maximum crashes to send per day.
+MAX_CRASH_RATE=${MAX_CRASH_RATE:-32}
+
+# Path to metrics_client.
+METRICS_CLIENT="/usr/bin/metrics_client"
+
+# File whose existence mocks crash sending.  If empty we pretend the
+# crash sending was successful, otherwise unsuccessful.
+MOCK_CRASH_SENDING="/tmp/mock-crash-sending"
+
+# Set this to 1 in the environment to pretend to have booted in developer
+# mode.  This is used by autotests.
+MOCK_DEVELOPER_MODE=${MOCK_DEVELOPER_MODE:-0}
+
+# Ignore PAUSE_CRASH_SENDING file if set.
+OVERRIDE_PAUSE_SENDING=${OVERRIDE_PAUSE_SENDING:-0}
+
+# File whose existence causes crash sending to be delayed (for testing).
+# Must be stateful to enable testing kernel crashes.
+PAUSE_CRASH_SENDING="/var/lib/crash_sender_paused"
+
+# URL to send official build crash reports to.
+REPORT_UPLOAD_PROD_URL="https://clients2.google.com/cr/report"
+
+# Path to a directory of restricted certificates which includes
+# a certificate for ${REPORT_UPLOAD_PROD_URL}.
+RESTRICTED_CERTIFICATES_PATH="/usr/share/chromeos-ca-certificates"
+
+# File whose existence implies we're running and not to start again.
+RUN_FILE="/var/run/crash_sender.pid"
+
+# Maximum time to sleep between sends.
+SECONDS_SEND_SPREAD=${SECONDS_SEND_SPREAD:-600}
+
+# Set this to 1 to allow uploading of device coredumps.
+DEVCOREDUMP_UPLOAD_FLAG_FILE=\
+"/var/lib/crash_reporter/device_coredump_upload_allowed"
+
+# The syslog tag for all logging we emit.
+TAG="$(basename $0)[$$]"
+
+# Directory to store timestamp files indicating the uploads in the past 24
+# hours.
+TIMESTAMPS_DIR="/var/lib/crash_sender"
+
+# Temp directory for this process.
+TMP_DIR=""
+
+# Chrome's crash report log file.
+CHROME_CRASH_LOG="/var/log/chrome/Crash Reports/uploads.log"
+
+lecho() {
+  logger -t "${TAG}" "$@"
+}
+
+# Returns true if mock is enabled.
+is_mock() {
+  [ -f "${MOCK_CRASH_SENDING}" ] && return 0
+  return 1
+}
+
+is_mock_successful() {
+  local mock_in=$(cat "${MOCK_CRASH_SENDING}")
+  [ "${mock_in}" = "" ] && return 0  # empty file means success
+  return 1
+}
+
+cleanup() {
+  if [ -n "${TMP_DIR}" ]; then
+    rm -rf "${TMP_DIR}"
+  fi
+  rm -f "${RUN_FILE}"
+  crash_done
+}
+
+crash_done() {
+  if is_mock; then
+    # For testing purposes, emit a message to log so that we
+    # know when the test has received all the messages from this run.
+    lecho "crash_sender done."
+  fi
+}
+
+is_official_image() {
+  [ ${FORCE_OFFICIAL} -ne 0 ] && return 0
+  grep ^CHROMEOS_RELEASE_DESCRIPTION /etc/lsb-release | grep -q Official
+}
+
+# Returns 0 if the a crash test is currently running.  NOTE: Mirrors
+# crash_collector.cc:CrashCollector::IsCrashTestInProgress().
+is_crash_test_in_progress() {
+  [ -f "${CRASH_TEST_IN_PROGRESS_FILE}" ] && return 0
+  return 1
+}
+
+# Returns 0 if we should consider ourselves to be running on a developer
+# image.  NOTE: Mirrors crash_collector.cc:CrashCollector::IsDeveloperImage().
+is_developer_image() {
+  # If we're testing crash reporter itself, we don't want to special-case
+  # for developer images.
+  is_crash_test_in_progress && return 1
+  [ -f "${LEAVE_CORE_FILE}" ] && return 0
+  return 1
+}
+
+# Returns 0 if we should consider ourselves to be running on a test image.
+is_test_image() {
+  # If we're testing crash reporter itself, we don't want to special-case
+  # for test images.
+  is_crash_test_in_progress && return 1
+  case $(get_channel) in
+  test*) return 0;;
+  esac
+  return 1
+}
+
+# Returns 0 if the machine booted up in developer mode.
+is_developer_mode() {
+  [ ${MOCK_DEVELOPER_MODE} -ne 0 ] && return 0
+  # If we're testing crash reporter itself, we don't want to special-case
+  # for developer mode.
+  is_crash_test_in_progress && return 1
+  crossystem "devsw_boot?1"  # exit status will be accurate
+}
+
+# Return 0 if the uploading of device coredumps is allowed.
+is_device_coredump_upload_allowed() {
+  [ -f "${DEVCOREDUMP_UPLOAD_FLAG_FILE}" ] && return 0
+  return 1
+}
+
+# Generate a uniform random number in 0..max-1.
+generate_uniform_random() {
+  local max=$1
+  local random="$(od -An -N4 -tu /dev/urandom)"
+  echo $((random % max))
+}
+
+# Check if sending a crash now does not exceed the maximum 24hr rate and
+# commit to doing so, if not.
+check_rate() {
+  mkdir -p ${TIMESTAMPS_DIR}
+  # Only consider minidumps written in the past 24 hours by removing all older.
+  ${FIND} "${TIMESTAMPS_DIR}" -mindepth 1 -mmin +$((24 * 60)) \
+      -exec rm -- '{}' ';'
+  local sends_in_24hrs=$(echo "${TIMESTAMPS_DIR}"/* | wc -w)
+  lecho "Current send rate: ${sends_in_24hrs}sends/24hrs"
+  if [ ${sends_in_24hrs} -ge ${MAX_CRASH_RATE} ]; then
+    lecho "Cannot send more crashes:"
+    lecho "  current ${sends_in_24hrs}send/24hrs >= " \
+          "max ${MAX_CRASH_RATE}send/24hrs"
+    return 1
+  fi
+  mktemp "${TIMESTAMPS_DIR}"/XXXX > /dev/null
+  return 0
+}
+
+# Gets the base part of a crash report file, such as name.01234.5678.9012 from
+# name.01234.5678.9012.meta or name.01234.5678.9012.log.tar.xz.  We make sure
+# "name" is sanitized in CrashCollector::Sanitize to not include any periods.
+get_base() {
+  echo "$1" | cut -d. -f-4
+}
+
+get_extension() {
+  local extension="${1##*.}"
+  local filename="${1%.*}"
+  # For gzipped file, we ignore .gz and get the real extension
+  if [ "${extension}" = "gz" ]; then
+    echo "${filename##*.}"
+  else
+    echo "${extension}"
+  fi
+}
+
+# Return which kind of report the given metadata file relates to
+get_kind() {
+  local payload="$(get_key_value "$1" "payload")"
+  if [ ! -r "${payload}" ]; then
+    lecho "Missing payload: ${payload}"
+    echo "undefined"
+    return
+  fi
+  local kind="$(get_extension "${payload}")"
+  if [ "${kind}" = "dmp" ]; then
+    echo "minidump"
+    return
+  fi
+  echo "${kind}"
+}
+
+get_key_value() {
+  local file="$1" key="$2" value
+
+  if [ -f "${file}" ]; then
+    # 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.
+    value=$(sed -n "/^${key}[[:space:]]*=/{s:^[^=]*=::p;q}" "${file}")
+  fi
+
+  echo "${value:-undefined}"
+}
+
+get_keys() {
+  local file="$1" regex="$2"
+
+  awk -F'[[:space:]=]' -vregex="${regex}" \
+      'match($1, regex) { print $1 }' "${file}"
+}
+
+# Return the board name.
+get_board() {
+  get_key_value "/etc/lsb-release" "CHROMEOS_RELEASE_BOARD"
+}
+
+# Return the channel name (sans "-channel" suffix).
+get_channel() {
+  get_key_value "/etc/lsb-release" "CHROMEOS_RELEASE_TRACK" |
+    sed 's:-channel$::'
+}
+
+# Return the hardware class or "undefined".
+get_hardware_class() {
+  if [ -r "${HWCLASS_PATH}" ]; then
+    cat "${HWCLASS_PATH}"
+  elif crossystem hwid > /dev/null 2>&1; then
+    echo "$(crossystem hwid)"
+  else
+    echo "undefined"
+  fi
+}
+
+send_crash() {
+  local meta_path="$1"
+  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="${REPORT_UPLOAD_PROD_URL}"
+  local chromeos_version="$(get_key_value "${meta_path}" "ver")"
+  local board="$(get_board)"
+  local hwclass="$(get_hardware_class)"
+  local write_payload_size="$(get_key_value "${meta_path}" "payload_size")"
+  local log="$(get_key_value "${meta_path}" "log")"
+  local sig="$(get_key_value "${meta_path}" "sig")"
+  local send_payload_size="$(stat --printf=%s "${report_payload}" 2>/dev/null)"
+  local product="$(get_key_value "${meta_path}" "upload_var_prod")"
+  local version="$(get_key_value "${meta_path}" "upload_var_ver")"
+  local upload_prefix="$(get_key_value "${meta_path}" "upload_prefix")"
+  local guid
+
+  set -- \
+    -F "write_payload_size=${write_payload_size}" \
+    -F "send_payload_size=${send_payload_size}"
+  if [ "${sig}" != "undefined" ]; then
+    set -- "$@" \
+      -F "sig=${sig}" \
+      -F "sig2=${sig}"
+  fi
+  if [ -r "${report_payload}" ]; then
+    set -- "$@" \
+      -F "upload_file_${kind}=@${report_payload}"
+  fi
+  if [ "${log}" != "undefined" -a -r "${log}" ]; then
+    set -- "$@" \
+      -F "log=@${log}"
+  fi
+
+  if [ "${upload_prefix}" = "undefined" ]; then
+    upload_prefix=""
+  fi
+
+  # Grab any variable that begins with upload_.
+  local v
+  for k in $(get_keys "${meta_path}" "^upload_"); do
+    v="$(get_key_value "${meta_path}" "${k}")"
+    case ${k} in
+      # Product & version are handled separately.
+      upload_var_prod) ;;
+      upload_var_ver) ;;
+      upload_var_*)
+        set -- "$@" -F "${upload_prefix}${k#upload_var_}=${v}"
+        ;;
+      upload_file_*)
+        if [ -r "${v}" ]; then
+          set -- "$@" -F "${upload_prefix}${k#upload_file_}=@${v}"
+        fi
+        ;;
+    esac
+  done
+
+  # When uploading Chrome reports we need to report the right product and
+  # version. If the meta file does not specify it, use GOOGLE_CRASH_ID
+  # as the product and GOOGLE_CRASH_VERSION_ID as the version.
+  if [ "${product}" = "undefined" ]; then
+    product="$(get_key_value /etc/os-release 'GOOGLE_CRASH_ID')"
+  fi
+  if [ "${version}" = "undefined" ]; then
+    version="$(get_key_value /etc/os-release 'GOOGLE_CRASH_VERSION_ID')"
+  fi
+
+  # If GOOGLE_CRASH_* is undefined, we look for ID and VERSION_ID in
+  # /etc/os-release.
+  if [ "${product}" = "undefined" ]; then
+    product="$(get_key_value /etc/os-release 'ID')"
+  fi
+  if [ "${version}" = "undefined" ]; then
+    version="$(get_key_value /etc/os-release 'VERSION_ID')"
+  fi
+
+  # If ID or VERSION_ID is undefined, we use the default product name
+  # and CHROMEOS_RELEASE_VERSION from /etc/lsb-release.
+  if [ "${product}" = "undefined" ]; then
+    product="${CHROMEOS_PRODUCT}"
+  fi
+  if [ "${version}" = "undefined" ]; then
+    version="${chromeos_version}"
+  fi
+
+  local image_type
+  if is_test_image; then
+    image_type="test"
+  elif is_developer_image; then
+    image_type="dev"
+  elif [ ${FORCE_OFFICIAL} -ne 0 ]; then
+    image_type="force-official"
+  elif is_mock && ! is_mock_successful; then
+    image_type="mock-fail"
+  fi
+
+  local boot_mode
+  if ! crossystem "cros_debug" > /dev/null 2>&1; then
+    # Sanity-check failed that makes sure crossystem exists.
+    lecho "Cannot determine boot mode due to error running crossystem command"
+    boot_mode="missing-crossystem"
+  elif is_developer_mode; then
+    boot_mode="dev"
+  fi
+
+  # Need to strip dashes ourselves as Chrome preserves it in the file
+  # nowadays.  This is also what the Chrome breakpad client does.
+  guid=$(tr -d '-' < "${CONSENT_ID}")
+
+  local error_type="$(get_key_value "${meta_path}" "error_type")"
+  [ "${error_type}" = "undefined" ] && error_type=
+
+  lecho "Sending crash:"
+  if [ "${product}" != "${CHROMEOS_PRODUCT}" ]; then
+    lecho "  Sending crash report on behalf of ${product}"
+  fi
+  lecho "  Metadata: ${meta_path} (${kind})"
+  lecho "  Payload: ${report_payload}"
+  lecho "  Version: ${version}"
+  [ -n "${image_type}" ] && lecho "  Image type: ${image_type}"
+  [ -n "${boot_mode}" ] && lecho "  Boot mode: ${boot_mode}"
+  if is_mock; then
+    lecho "  Product: ${product}"
+    lecho "  URL: ${url}"
+    lecho "  Board: ${board}"
+    lecho "  HWClass: ${hwclass}"
+    lecho "  write_payload_size: ${write_payload_size}"
+    lecho "  send_payload_size: ${send_payload_size}"
+    if [ "${log}" != "undefined" ]; then
+      lecho "  log: @${log}"
+    fi
+    if [ "${sig}" != "undefined" ]; then
+      lecho "  sig: ${sig}"
+    fi
+  fi
+  lecho "  Exec name: ${exec_name}"
+  [ -n "${error_type}" ] && lecho "  Error type: ${error_type}"
+  if is_mock; then
+    if ! is_mock_successful; then
+      lecho "Mocking unsuccessful send"
+      return 1
+    fi
+    lecho "Mocking successful send"
+    return 0
+  fi
+
+  # Read in the first proxy, if any, for a given URL.  NOTE: The
+  # double-quotes are necessary due to a bug in dash with the "local"
+  # builtin command and values that have spaces in them (see
+  # "https://bugs.launchpad.net/ubuntu/+source/dash/+bug/139097").
+  if [ -f "${LIST_PROXIES}" ]; then
+    local proxy ret
+    proxy=$("${LIST_PROXIES}" --quiet "${url}")
+    ret=$?
+    if [ ${ret} -ne 0 ]; then
+      proxy=''
+      lecho -psyslog.warn \
+        "Listing proxies failed with exit code ${ret}"
+    else
+      proxy=$(echo "${proxy}" | head -1)
+    fi
+  fi
+  # if a direct connection should be used, unset the proxy variable.
+  [ "${proxy}" = "direct://" ] && proxy=
+  local report_id="${TMP_DIR}/report_id"
+  local curl_stderr="${TMP_DIR}/curl_stderr"
+
+  set +e
+  curl "${url}" -v ${proxy:+--proxy "$proxy"} \
+    --capath "${RESTRICTED_CERTIFICATES_PATH}" --ciphers HIGH \
+    -F "prod=${product}" \
+    -F "ver=${version}" \
+    -F "board=${board}" \
+    -F "hwclass=${hwclass}" \
+    -F "exec_name=${exec_name}" \
+    ${image_type:+-F "image_type=${image_type}"} \
+    ${boot_mode:+-F "boot_mode=${boot_mode}"} \
+    ${error_type:+-F "error_type=${error_type}"} \
+    -F "guid=${guid}" \
+    -o "${report_id}" \
+    "$@" \
+    2>"${curl_stderr}"
+  curl_result=$?
+  set -e
+
+  if [ ${curl_result} -eq 0 ]; then
+    local id="$(cat "${report_id}")"
+    local product_name
+    local timestamp="$(date +%s)"
+    case ${product} in
+    Chrome_ChromeOS)
+      if is_official_image; then
+        product_name="Chrome"
+      else
+        product_name="Chromium"
+      fi
+      ;;
+    *)
+      if is_official_image; then
+        product_name="ChromeOS"
+      else
+        product_name="ChromiumOS"
+      fi
+      ;;
+    esac
+    printf '%s,%s,%s\n' \
+      "${timestamp}" "${id}" "${product_name}" >> "${CHROME_CRASH_LOG}"
+    lecho "Crash report receipt ID ${id}"
+  else
+    lecho "Crash sending failed with exit code ${curl_result}: " \
+      "$(cat "${curl_stderr}")"
+  fi
+
+  rm -f "${report_id}"
+
+  return ${curl_result}
+}
+
+# *.meta files always end with done=1 so we can tell if they are complete.
+is_complete_metadata() {
+  grep -q "done=1" "$1"
+}
+
+# Remove the given report path.
+remove_report() {
+  local base="${1%.*}"
+  rm -f -- "${base}".*
+}
+
+# Send all crashes from the given directory.  This applies even when we're on a
+# 3G connection (see crosbug.com/3304 for discussion).
+send_crashes() {
+  local dir="$1"
+
+  if [ ! -d "${dir}" ]; then
+    return
+  fi
+
+  # Consider any old files which still have no corresponding meta file
+  # as orphaned, and remove them.
+  for old_file in $(${FIND} "${dir}" -mindepth 1 \
+                    -mmin +$((24 * 60)) -type f); do
+    if [ ! -e "$(get_base "${old_file}").meta" ]; then
+      lecho "Removing old orphaned file: ${old_file}."
+      rm -f -- "${old_file}"
+    fi
+  done
+
+  # Look through all metadata (*.meta) files, oldest first.  That way, the rate
+  # limit does not stall old crashes if there's a high amount of new crashes
+  # coming in.
+  # For each crash report, first evaluate conditions that might lead to its
+  # removal to honor user choice and to free disk space as soon as possible,
+  # then decide whether it should be sent right now or kept for later sending.
+  for meta_path in $(ls -1tr "${dir}"/*.meta 2>/dev/null); do
+    lecho "Considering metadata ${meta_path}."
+
+    local kind=$(get_kind "${meta_path}")
+    if [ "${kind}" != "minidump" ] && \
+       [ "${kind}" != "kcrash" ] && \
+       [ "${kind}" != "log" ] &&
+       [ "${kind}" != "devcore" ]; then
+      lecho "Unknown report kind ${kind}.  Removing report."
+      remove_report "${meta_path}"
+      continue
+    fi
+
+    if ! is_complete_metadata "${meta_path}"; then
+      # This report is incomplete, so if it's old, just remove it.
+      local old_meta=$(${FIND} "${dir}" -mindepth 1 -name \
+        $(basename "${meta_path}") -mmin +$((24 * 60)) -type f)
+      if [ -n "${old_meta}" ]; then
+        lecho "Removing old incomplete metadata."
+        remove_report "${meta_path}"
+      else
+        lecho "Ignoring recent incomplete metadata."
+      fi
+      continue
+    fi
+
+    # Ignore device coredump if device coredump uploading is not allowed.
+    if [ "${kind}" = "devcore" ] && ! is_device_coredump_upload_allowed; then
+      lecho "Ignoring device coredump. Device coredump upload not allowed."
+      continue
+    fi
+
+    if ! is_mock && ! is_official_image; then
+      lecho "Not an official OS version.  Removing crash."
+      remove_report "${meta_path}"
+      continue
+    fi
+
+    # Don't send crash reports from previous sessions while we're in guest mode
+    # to avoid the impression that crash reporting was enabled, which it isn't.
+    # (Don't exit right now because subsequent reports may be candidates for
+    # deletion.)
+    if ${METRICS_CLIENT} -g; then
+      lecho "Guest mode has been entered.  Delaying crash sending until exited."
+      continue
+    fi
+
+    # Remove existing crashes in case user consent has not (yet) been given or
+    # has been revoked.  This must come after the guest mode check because
+    # ${METRICS_CLIENT} always returns "not consented" in guest mode.
+    if ! ${METRICS_CLIENT} -c; then
+      lecho "Crash reporting is disabled.  Removing crash."
+      remove_report "${meta_path}"
+      continue
+    fi
+
+    # Skip report if the upload rate is exceeded.  (Don't exit right now because
+    # subsequent reports may be candidates for deletion.)
+    if ! check_rate; then
+      lecho "Sending ${meta_path} would exceed rate.  Leaving for later."
+      continue
+    fi
+
+    # The .meta file should be written *after* all to-be-uploaded files that it
+    # references.  Nevertheless, as a safeguard, a hold-off time of thirty
+    # seconds after writing the .meta file is ensured.  Also, sending of crash
+    # reports is spread out randomly by up to SECONDS_SEND_SPREAD.  Thus, for
+    # the sleep call the greater of the two delays is used.
+    local now=$(date +%s)
+    local holdoff_time=$(($(stat --format=%Y "${meta_path}") + 30 - ${now}))
+    local spread_time=$(generate_uniform_random "${SECONDS_SEND_SPREAD}")
+    local sleep_time
+    if [ ${spread_time} -gt ${holdoff_time} ]; then
+      sleep_time="${spread_time}"
+    else
+      sleep_time="${holdoff_time}"
+    fi
+    lecho "Scheduled to send in ${sleep_time}s."
+    if ! is_mock; then
+      if ! sleep "${sleep_time}"; then
+          lecho "Sleep failed"
+          return 1
+      fi
+    fi
+
+    # Try to upload.
+    if ! send_crash "${meta_path}"; then
+      lecho "Problem sending ${meta_path}, not removing."
+      continue
+    fi
+
+    # Send was successful, now remove.
+    lecho "Successfully sent crash ${meta_path} and removing."
+    remove_report "${meta_path}"
+  done
+}
+
+usage() {
+  cat <<EOF
+Usage: crash_sender [options]
+
+Options:
+ -e <var>=<val>     Set env |var| to |val| (only some vars)
+EOF
+  exit ${1:-1}
+}
+
+parseargs() {
+  # Parse the command line arguments.
+  while [ $# -gt 0 ]; do
+    case $1 in
+    -e)
+      shift
+      case $1 in
+      FORCE_OFFICIAL=*|\
+      MAX_CRASH_RATE=*|\
+      MOCK_DEVELOPER_MODE=*|\
+      OVERRIDE_PAUSE_SENDING=*|\
+      SECONDS_SEND_SPREAD=*)
+        export "$1"
+        ;;
+      *)
+        lecho "Unknown var passed to -e: $1"
+        exit 1
+        ;;
+      esac
+      ;;
+    -h)
+      usage 0
+      ;;
+    *)
+      lecho "Unknown options: $*"
+      exit 1
+      ;;
+    esac
+    shift
+  done
+}
+
+main() {
+  trap cleanup EXIT INT TERM
+
+  parseargs "$@"
+
+  if [ -e "${PAUSE_CRASH_SENDING}" ] && \
+     [ ${OVERRIDE_PAUSE_SENDING} -eq 0 ]; then
+    lecho "Exiting early due to ${PAUSE_CRASH_SENDING}."
+    exit 1
+  fi
+
+  if is_test_image; then
+    lecho "Exiting early due to test image."
+    exit 1
+  fi
+
+  # We don't perform checks on this because we have a master lock with the
+  # CRASH_SENDER_LOCK file.  This pid file is for the system to keep track
+  # (like with autotests) that we're still running.
+  echo $$ > "${RUN_FILE}"
+
+  for dependency in "${FIND}" "${METRICS_CLIENT}" \
+                    "${RESTRICTED_CERTIFICATES_PATH}"; do
+    if [ ! -x "${dependency}" ]; then
+      lecho "Fatal: Crash sending disabled: ${dependency} not found."
+      exit 1
+    fi
+  done
+
+  TMP_DIR="$(mktemp -d /tmp/crash_sender.XXXXXX)"
+
+  # Send system-wide crashes
+  send_crashes "/var/spool/crash"
+
+  # Send user-specific crashes
+  local d
+  for d in /home/chronos/crash /home/chronos/u-*/crash; do
+    send_crashes "${d}"
+  done
+}
+
+(
+if ! flock -n 9; then
+  lecho "Already running; quitting."
+  crash_done
+  exit 1
+fi
+main "$@"
+) 9>"${CRASH_SENDER_LOCK}"
diff --git a/crash_reporter/dbus_bindings/org.chromium.LibCrosService.xml b/crash_reporter/dbus_bindings/org.chromium.LibCrosService.xml
new file mode 100644
index 0000000..64b8b84
--- /dev/null
+++ b/crash_reporter/dbus_bindings/org.chromium.LibCrosService.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+
+<node name="/org/chromium/LibCrosService"
+      xmlns:tp="http://telepathy.freedesktop.org/wiki/DbusSpec#extensions-v0">
+  <interface name="org.chromium.LibCrosServiceInterface">
+    <method name="ResolveNetworkProxy">
+      <arg name="source_url" type="s" direction="in"/>
+      <arg name="signal_interface" type="s" direction="in"/>
+      <arg name="signal_name" type="s" direction="in"/>
+      <annotation name="org.chromium.DBus.Method.Kind" value="simple"/>
+    </method>
+  </interface>
+  <interface name="org.chromium.CrashReporterLibcrosProxyResolvedInterface">
+    <signal name="ProxyResolved">
+      <arg name="source_url" type="s" direction="out"/>
+      <arg name="proxy_info" type="s" direction="out"/>
+      <arg name="error_message" type="s" direction="out"/>
+    </signal>
+  </interface>
+</node>
diff --git a/crash_reporter/init/crash-reporter.conf b/crash_reporter/init/crash-reporter.conf
new file mode 100644
index 0000000..19f2cdb
--- /dev/null
+++ b/crash_reporter/init/crash-reporter.conf
@@ -0,0 +1,27 @@
+# Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+description     "Initialize crash reporting services"
+author          "chromium-os-dev@chromium.org"
+
+# This job merely initializes its service and then terminates; the
+# actual checking and reporting of crash dumps is triggered by an
+# hourly cron job.
+start on starting system-services
+
+pre-start script
+  mkdir -p /var/spool
+
+  # Only allow device coredumps on a "developer system".
+  if ! is_developer_end_user; then
+    # consumer end-user - disable device coredumps, if driver exists.
+    echo 1 > /sys/class/devcoredump/disabled || true
+  fi
+end script
+
+# crash_reporter uses argv[0] as part of the command line for
+# /proc/sys/kernel/core_pattern.  That command line is invoked by
+# the kernel, and can't rely on PATH, so argv[0] must be a full
+# path; we invoke it as such here.
+exec /sbin/crash_reporter --init
diff --git a/crash_reporter/init/crash-sender.conf b/crash_reporter/init/crash-sender.conf
new file mode 100644
index 0000000..892186f
--- /dev/null
+++ b/crash_reporter/init/crash-sender.conf
@@ -0,0 +1,11 @@
+# Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+description     "Run the crash sender periodically"
+author          "chromium-os-dev@chromium.org"
+
+start on starting system-services
+stop on stopping system-services
+
+exec periodic_scheduler 3600 14400 crash_sender /sbin/crash_sender
diff --git a/crash_reporter/init/warn-collector.conf b/crash_reporter/init/warn-collector.conf
new file mode 100644
index 0000000..3be80da
--- /dev/null
+++ b/crash_reporter/init/warn-collector.conf
@@ -0,0 +1,12 @@
+# Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+description "Runs a daemon which collects and reports kernel warnings"
+author      "chromium-os-dev@chromium.org"
+
+start on started system-services
+stop on stopping system-services
+respawn
+
+exec warn_collector
diff --git a/crash_reporter/kernel_collector.cc b/crash_reporter/kernel_collector.cc
new file mode 100644
index 0000000..b3cbede
--- /dev/null
+++ b/crash_reporter/kernel_collector.cc
@@ -0,0 +1,591 @@
+// Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "kernel_collector.h"
+
+#include <map>
+#include <sys/stat.h>
+
+#include <base/files/file_util.h>
+#include <base/logging.h>
+#include <base/strings/string_util.h>
+#include <base/strings/stringprintf.h>
+
+using base::FilePath;
+using base::StringPrintf;
+
+namespace {
+
+const char kDefaultKernelStackSignature[] = "kernel-UnspecifiedStackSignature";
+const char kDumpParentPath[] = "/dev";
+const char kDumpPath[] = "/dev/pstore";
+const char kDumpFormat[] = "dmesg-ramoops-%zu";
+const char kKernelExecName[] = "kernel";
+// Maximum number of records to examine in the kDumpPath.
+const size_t kMaxDumpRecords = 100;
+const pid_t kKernelPid = 0;
+const char kKernelSignatureKey[] = "sig";
+// Byte length of maximum human readable portion of a kernel crash signature.
+const int kMaxHumanStringLength = 40;
+const uid_t kRootUid = 0;
+// Time in seconds from the final kernel log message for a call stack
+// to count towards the signature of the kcrash.
+const int kSignatureTimestampWindow = 2;
+// Kernel log timestamp regular expression.
+const char kTimestampRegex[] = "^<.*>\\[\\s*(\\d+\\.\\d+)\\]";
+
+//
+// These regular expressions enable to us capture the PC in a backtrace.
+// The backtrace is obtained through dmesg or the kernel's preserved/kcrashmem
+// feature.
+//
+// For ARM we see:
+//   "<5>[   39.458982] PC is at write_breakme+0xd0/0x1b4"
+// For MIPS we see:
+//   "<5>[ 3378.552000] epc   : 804010f0 lkdtm_do_action+0x68/0x3f8"
+// For x86:
+//   "<0>[   37.474699] EIP: [<790ed488>] write_breakme+0x80/0x108
+//    SS:ESP 0068:e9dd3efc"
+//
+const char* const kPCRegex[] = {
+  0,
+  " PC is at ([^\\+ ]+).*",
+  " epc\\s+:\\s+\\S+\\s+([^\\+ ]+).*",  // MIPS has an exception program counter
+  " EIP: \\[<.*>\\] ([^\\+ ]+).*",  // X86 uses EIP for the program counter
+  " RIP  \\[<.*>\\] ([^\\+ ]+).*",  // X86_64 uses RIP for the program counter
+};
+
+COMPILE_ASSERT(arraysize(kPCRegex) == KernelCollector::kArchCount,
+               missing_arch_pc_regexp);
+
+}  // namespace
+
+KernelCollector::KernelCollector()
+    : is_enabled_(false),
+      ramoops_dump_path_(kDumpPath),
+      records_(0),
+      // We expect crash dumps in the format of architecture we are built for.
+      arch_(GetCompilerArch()) {
+}
+
+KernelCollector::~KernelCollector() {
+}
+
+void KernelCollector::OverridePreservedDumpPath(const FilePath &file_path) {
+  ramoops_dump_path_ = file_path;
+}
+
+bool KernelCollector::ReadRecordToString(std::string *contents,
+                                         size_t current_record,
+                                         bool *record_found) {
+  // A record is a ramoops dump. It has an associated size of "record_size".
+  std::string record;
+  std::string captured;
+
+  // Ramoops appends a header to a crash which contains ==== followed by a
+  // timestamp. Ignore the header.
+  pcrecpp::RE record_re(
+      "====\\d+\\.\\d+\n(.*)",
+      pcrecpp::RE_Options().set_multiline(true).set_dotall(true));
+
+  pcrecpp::RE sanity_check_re("\n<\\d+>\\[\\s*(\\d+\\.\\d+)\\]");
+
+  FilePath ramoops_record;
+  GetRamoopsRecordPath(&ramoops_record, current_record);
+  if (!base::ReadFileToString(ramoops_record, &record)) {
+    LOG(ERROR) << "Unable to open " << ramoops_record.value();
+    return false;
+  }
+
+  *record_found = false;
+  if (record_re.FullMatch(record, &captured)) {
+    // Found a ramoops header, so strip the header and append the rest.
+    contents->append(captured);
+    *record_found = true;
+  } else if (sanity_check_re.PartialMatch(record.substr(0, 1024))) {
+    // pstore compression has been added since kernel 3.12. In order to
+    // decompress dmesg correctly, ramoops driver has to strip the header
+    // before handing over the record to the pstore driver, so we don't
+    // need to do it here anymore. However, the sanity check is needed because
+    // sometimes a pstore record is just a chunk of uninitialized memory which
+    // is not the result of a kernel crash. See crbug.com/443764
+    contents->append(record);
+    *record_found = true;
+  } else {
+    LOG(WARNING) << "Found invalid record at " << ramoops_record.value();
+  }
+
+  // Remove the record from pstore after it's found.
+  if (*record_found)
+    base::DeleteFile(ramoops_record, false);
+
+  return true;
+}
+
+void KernelCollector::GetRamoopsRecordPath(FilePath *path,
+                                           size_t record) {
+  // Disable error "format not a string literal, argument types not checked"
+  // because this is valid, but GNU apparently doesn't bother checking a const
+  // format string.
+  #pragma GCC diagnostic push
+  #pragma GCC diagnostic ignored "-Wformat-nonliteral"
+  *path = ramoops_dump_path_.Append(StringPrintf(kDumpFormat, record));
+  #pragma GCC diagnostic pop
+}
+
+bool KernelCollector::LoadParameters() {
+  // Discover how many ramoops records are being exported by the driver.
+  size_t count;
+
+  for (count = 0; count < kMaxDumpRecords; ++count) {
+    FilePath ramoops_record;
+    GetRamoopsRecordPath(&ramoops_record, count);
+
+    if (!base::PathExists(ramoops_record))
+      break;
+  }
+
+  records_ = count;
+  return (records_ > 0);
+}
+
+bool KernelCollector::LoadPreservedDump(std::string *contents) {
+  // Load dumps from the preserved memory and save them in contents.
+  // Since the system is set to restart on oops we won't actually ever have
+  // multiple records (only 0 or 1), but check in case we don't restart on
+  // oops in the future.
+  bool any_records_found = false;
+  bool record_found = false;
+  // clear contents since ReadFileToString actually appends to the string.
+  contents->clear();
+
+  for (size_t i = 0; i < records_; ++i) {
+    if (!ReadRecordToString(contents, i, &record_found)) {
+      break;
+    }
+    if (record_found) {
+      any_records_found = true;
+    }
+  }
+
+  if (!any_records_found) {
+    LOG(ERROR) << "No valid records found in " << ramoops_dump_path_.value();
+    return false;
+  }
+
+  return true;
+}
+
+void KernelCollector::StripSensitiveData(std::string *kernel_dump) {
+  // Strip any data that the user might not want sent up to the crash servers.
+  // We'll read in from kernel_dump and also place our output there.
+  //
+  // At the moment, the only sensitive data we strip is MAC addresses.
+
+  // Get rid of things that look like MAC addresses, since they could possibly
+  // give information about where someone has been.  This is strings that look
+  // like this: 11:22:33:44:55:66
+  // Complications:
+  // - Within a given kernel_dump, want to be able to tell when the same MAC
+  //   was used more than once.  Thus, we'll consistently replace the first
+  //   MAC found with 00:00:00:00:00:01, the second with ...:02, etc.
+  // - ACPI commands look like MAC addresses.  We'll specifically avoid getting
+  //   rid of those.
+  std::ostringstream result;
+  std::string pre_mac_str;
+  std::string mac_str;
+  std::map<std::string, std::string> mac_map;
+  pcrecpp::StringPiece input(*kernel_dump);
+
+  // This RE will find the next MAC address and can return us the data preceding
+  // the MAC and the MAC itself.
+  pcrecpp::RE mac_re("(.*?)("
+                     "[0-9a-fA-F][0-9a-fA-F]:"
+                     "[0-9a-fA-F][0-9a-fA-F]:"
+                     "[0-9a-fA-F][0-9a-fA-F]:"
+                     "[0-9a-fA-F][0-9a-fA-F]:"
+                     "[0-9a-fA-F][0-9a-fA-F]:"
+                     "[0-9a-fA-F][0-9a-fA-F])",
+                     pcrecpp::RE_Options()
+                       .set_multiline(true)
+                       .set_dotall(true));
+
+  // This RE will identify when the 'pre_mac_str' shows that the MAC address
+  // was really an ACPI cmd.  The full string looks like this:
+  //   ata1.00: ACPI cmd ef/10:03:00:00:00:a0 (SET FEATURES) filtered out
+  pcrecpp::RE acpi_re("ACPI cmd ef/$",
+                      pcrecpp::RE_Options()
+                        .set_multiline(true)
+                        .set_dotall(true));
+
+  // Keep consuming, building up a result string as we go.
+  while (mac_re.Consume(&input, &pre_mac_str, &mac_str)) {
+    if (acpi_re.PartialMatch(pre_mac_str)) {
+      // We really saw an ACPI command; add to result w/ no stripping.
+      result << pre_mac_str << mac_str;
+    } else {
+      // Found a MAC address; look up in our hash for the mapping.
+      std::string replacement_mac = mac_map[mac_str];
+      if (replacement_mac == "") {
+        // It wasn't present, so build up a replacement string.
+        int mac_id = mac_map.size();
+
+        // Handle up to 2^32 unique MAC address; overkill, but doesn't hurt.
+        replacement_mac = StringPrintf("00:00:%02x:%02x:%02x:%02x",
+                                       (mac_id & 0xff000000) >> 24,
+                                       (mac_id & 0x00ff0000) >> 16,
+                                       (mac_id & 0x0000ff00) >> 8,
+                                       (mac_id & 0x000000ff));
+        mac_map[mac_str] = replacement_mac;
+      }
+
+      // Dump the string before the MAC and the fake MAC address into result.
+      result << pre_mac_str << replacement_mac;
+    }
+  }
+
+  // One last bit of data might still be in the input.
+  result << input;
+
+  // We'll just assign right back to kernel_dump.
+  *kernel_dump = result.str();
+}
+
+bool KernelCollector::DumpDirMounted() {
+  struct stat st_parent;
+  if (stat(kDumpParentPath, &st_parent)) {
+    PLOG(WARNING) << "Could not stat " << kDumpParentPath;
+    return false;
+  }
+
+  struct stat st_dump;
+  if (stat(kDumpPath, &st_dump)) {
+    PLOG(WARNING) << "Could not stat " << kDumpPath;
+    return false;
+  }
+
+  if (st_parent.st_dev == st_dump.st_dev) {
+    LOG(WARNING) << "Dump dir " << kDumpPath << " not mounted";
+    return false;
+  }
+
+  return true;
+}
+
+bool KernelCollector::Enable() {
+  if (arch_ == kArchUnknown || arch_ >= kArchCount ||
+      kPCRegex[arch_] == nullptr) {
+    LOG(WARNING) << "KernelCollector does not understand this architecture";
+    return false;
+  }
+
+  if (!DumpDirMounted()) {
+    LOG(WARNING) << "Kernel does not support crash dumping";
+    return false;
+  }
+
+  // To enable crashes, we will eventually need to set
+  // the chnv bit in BIOS, but it does not yet work.
+  LOG(INFO) << "Enabling kernel crash handling";
+  is_enabled_ = true;
+  return true;
+}
+
+// Hash a string to a number.  We define our own hash function to not
+// be dependent on a C++ library that might change.  This function
+// uses basically the same approach as tr1/functional_hash.h but with
+// a larger prime number (16127 vs 131).
+static unsigned HashString(const std::string &input) {
+  unsigned hash = 0;
+  for (size_t i = 0; i < input.length(); ++i)
+    hash = hash * 16127 + input[i];
+  return hash;
+}
+
+void KernelCollector::ProcessStackTrace(
+    pcrecpp::StringPiece kernel_dump,
+    bool print_diagnostics,
+    unsigned *hash,
+    float *last_stack_timestamp,
+    bool *is_watchdog_crash) {
+  pcrecpp::RE line_re("(.+)", pcrecpp::MULTILINE());
+  pcrecpp::RE stack_trace_start_re(std::string(kTimestampRegex) +
+        " (Call Trace|Backtrace):$");
+
+  // Match lines such as the following and grab out "function_name".
+  // The ? may or may not be present.
+  //
+  // For ARM:
+  // <4>[ 3498.731164] [<c0057220>] ? (function_name+0x20/0x2c) from
+  // [<c018062c>] (foo_bar+0xdc/0x1bc)
+  //
+  // For MIPS:
+  // <5>[ 3378.656000] [<804010f0>] lkdtm_do_action+0x68/0x3f8
+  //
+  // For X86:
+  // <4>[ 6066.849504]  [<7937bcee>] ? function_name+0x66/0x6c
+  //
+  pcrecpp::RE stack_entry_re(std::string(kTimestampRegex) +
+    "\\s+\\[<[[:xdigit:]]+>\\]"      // Matches "  [<7937bcee>]"
+    "([\\s\\?(]+)"                   // Matches " ? (" (ARM) or " ? " (X86)
+    "([^\\+ )]+)");                  // Matches until delimiter reached
+  std::string line;
+  std::string hashable;
+  std::string previous_hashable;
+  bool is_watchdog = false;
+
+  *hash = 0;
+  *last_stack_timestamp = 0;
+
+  // Find the last and second-to-last stack traces.  The latter is used when
+  // the panic is from a watchdog timeout.
+  while (line_re.FindAndConsume(&kernel_dump, &line)) {
+    std::string certainty;
+    std::string function_name;
+    if (stack_trace_start_re.PartialMatch(line, last_stack_timestamp)) {
+      if (print_diagnostics) {
+        printf("Stack trace starting.%s\n",
+               hashable.empty() ? "" : "  Saving prior trace.");
+      }
+      previous_hashable = hashable;
+      hashable.clear();
+      is_watchdog = false;
+    } else if (stack_entry_re.PartialMatch(line,
+                                           last_stack_timestamp,
+                                           &certainty,
+                                           &function_name)) {
+      bool is_certain = certainty.find('?') == std::string::npos;
+      if (print_diagnostics) {
+        printf("@%f: stack entry for %s (%s)\n",
+               *last_stack_timestamp,
+               function_name.c_str(),
+               is_certain ? "certain" : "uncertain");
+      }
+      // Do not include any uncertain (prefixed by '?') frames in our hash.
+      if (!is_certain)
+        continue;
+      if (!hashable.empty())
+        hashable.append("|");
+      if (function_name == "watchdog_timer_fn" ||
+          function_name == "watchdog") {
+        is_watchdog = true;
+      }
+      hashable.append(function_name);
+    }
+  }
+
+  // If the last stack trace contains a watchdog function we assume the panic
+  // is from the watchdog timer, and we hash the previous stack trace rather
+  // than the last one, assuming that the previous stack is that of the hung
+  // thread.
+  //
+  // In addition, if the hashable is empty (meaning all frames are uncertain,
+  // for whatever reason) also use the previous frame, as it cannot be any
+  // worse.
+  if (is_watchdog || hashable.empty()) {
+    hashable = previous_hashable;
+  }
+
+  *hash = HashString(hashable);
+  *is_watchdog_crash = is_watchdog;
+
+  if (print_diagnostics) {
+    printf("Hash based on stack trace: \"%s\" at %f.\n",
+           hashable.c_str(), *last_stack_timestamp);
+  }
+}
+
+// static
+KernelCollector::ArchKind KernelCollector::GetCompilerArch() {
+#if defined(COMPILER_GCC) && defined(ARCH_CPU_ARM_FAMILY)
+  return kArchArm;
+#elif defined(COMPILER_GCC) && defined(ARCH_CPU_MIPS_FAMILY)
+  return kArchMips;
+#elif defined(COMPILER_GCC) && defined(ARCH_CPU_X86_64)
+  return kArchX86_64;
+#elif defined(COMPILER_GCC) && defined(ARCH_CPU_X86_FAMILY)
+  return kArchX86;
+#else
+  return kArchUnknown;
+#endif
+}
+
+bool KernelCollector::FindCrashingFunction(
+  pcrecpp::StringPiece kernel_dump,
+  bool print_diagnostics,
+  float stack_trace_timestamp,
+  std::string *crashing_function) {
+  float timestamp = 0;
+
+  // Use the correct regex for this architecture.
+  pcrecpp::RE eip_re(std::string(kTimestampRegex) + kPCRegex[arch_],
+                     pcrecpp::MULTILINE());
+
+  while (eip_re.FindAndConsume(&kernel_dump, &timestamp, crashing_function)) {
+    if (print_diagnostics) {
+      printf("@%f: found crashing function %s\n",
+             timestamp,
+             crashing_function->c_str());
+    }
+  }
+  if (timestamp == 0) {
+    if (print_diagnostics) {
+      printf("Found no crashing function.\n");
+    }
+    return false;
+  }
+  if (stack_trace_timestamp != 0 &&
+      abs(static_cast<int>(stack_trace_timestamp - timestamp))
+        > kSignatureTimestampWindow) {
+    if (print_diagnostics) {
+      printf("Found crashing function but not within window.\n");
+    }
+    return false;
+  }
+  if (print_diagnostics) {
+    printf("Found crashing function %s\n", crashing_function->c_str());
+  }
+  return true;
+}
+
+bool KernelCollector::FindPanicMessage(pcrecpp::StringPiece kernel_dump,
+                                       bool print_diagnostics,
+                                       std::string *panic_message) {
+  // Match lines such as the following and grab out "Fatal exception"
+  // <0>[  342.841135] Kernel panic - not syncing: Fatal exception
+  pcrecpp::RE kernel_panic_re(std::string(kTimestampRegex) +
+                              " Kernel panic[^\\:]*\\:\\s*(.*)",
+                              pcrecpp::MULTILINE());
+  float timestamp = 0;
+  while (kernel_panic_re.FindAndConsume(&kernel_dump,
+                                        &timestamp,
+                                        panic_message)) {
+    if (print_diagnostics) {
+      printf("@%f: panic message %s\n",
+             timestamp,
+             panic_message->c_str());
+    }
+  }
+  if (timestamp == 0) {
+    if (print_diagnostics) {
+      printf("Found no panic message.\n");
+    }
+    return false;
+  }
+  return true;
+}
+
+bool KernelCollector::ComputeKernelStackSignature(
+    const std::string &kernel_dump,
+    std::string *kernel_signature,
+    bool print_diagnostics) {
+  unsigned stack_hash = 0;
+  float last_stack_timestamp = 0;
+  std::string human_string;
+  bool is_watchdog_crash;
+
+  ProcessStackTrace(kernel_dump,
+                    print_diagnostics,
+                    &stack_hash,
+                    &last_stack_timestamp,
+                    &is_watchdog_crash);
+
+  if (!FindCrashingFunction(kernel_dump,
+                            print_diagnostics,
+                            last_stack_timestamp,
+                            &human_string)) {
+    if (!FindPanicMessage(kernel_dump, print_diagnostics, &human_string)) {
+      if (print_diagnostics) {
+        printf("Found no human readable string, using empty string.\n");
+      }
+      human_string.clear();
+    }
+  }
+
+  if (human_string.empty() && stack_hash == 0) {
+    if (print_diagnostics) {
+      printf("Found neither a stack nor a human readable string, failing.\n");
+    }
+    return false;
+  }
+
+  human_string = human_string.substr(0, kMaxHumanStringLength);
+  *kernel_signature = StringPrintf("%s-%s%s-%08X",
+                                   kKernelExecName,
+                                   (is_watchdog_crash ? "(HANG)-" : ""),
+                                   human_string.c_str(),
+                                   stack_hash);
+  return true;
+}
+
+bool KernelCollector::Collect() {
+  std::string kernel_dump;
+  FilePath root_crash_directory;
+
+  if (!LoadParameters()) {
+    return false;
+  }
+  if (!LoadPreservedDump(&kernel_dump)) {
+    return false;
+  }
+  StripSensitiveData(&kernel_dump);
+  if (kernel_dump.empty()) {
+    return false;
+  }
+  std::string signature;
+  if (!ComputeKernelStackSignature(kernel_dump, &signature, false)) {
+    signature = kDefaultKernelStackSignature;
+  }
+
+  std::string reason = "handling";
+  bool feedback = true;
+  if (IsDeveloperImage()) {
+    reason = "developer build - always dumping";
+    feedback = true;
+  } else if (!is_feedback_allowed_function_()) {
+    reason = "ignoring - no consent";
+    feedback = false;
+  }
+
+  LOG(INFO) << "Received prior crash notification from "
+            << "kernel (signature " << signature << ") (" << reason << ")";
+
+  if (feedback) {
+    count_crash_function_();
+
+    if (!GetCreatedCrashDirectoryByEuid(kRootUid,
+                                        &root_crash_directory,
+                                        nullptr)) {
+      return true;
+    }
+
+    std::string dump_basename =
+        FormatDumpBasename(kKernelExecName, time(nullptr), kKernelPid);
+    FilePath kernel_crash_path = root_crash_directory.Append(
+        StringPrintf("%s.kcrash", dump_basename.c_str()));
+
+    // We must use WriteNewFile instead of base::WriteFile as we
+    // do not want to write with root access to a symlink that an attacker
+    // might have created.
+    if (WriteNewFile(kernel_crash_path,
+                     kernel_dump.data(),
+                     kernel_dump.length()) !=
+        static_cast<int>(kernel_dump.length())) {
+      LOG(INFO) << "Failed to write kernel dump to "
+                << kernel_crash_path.value().c_str();
+      return true;
+    }
+
+    AddCrashMetaData(kKernelSignatureKey, signature);
+    WriteCrashMetaData(
+        root_crash_directory.Append(
+            StringPrintf("%s.meta", dump_basename.c_str())),
+        kKernelExecName,
+        kernel_crash_path.value());
+
+    LOG(INFO) << "Stored kcrash to " << kernel_crash_path.value();
+  }
+
+  return true;
+}
diff --git a/crash_reporter/kernel_collector.h b/crash_reporter/kernel_collector.h
new file mode 100644
index 0000000..5fc4ac2
--- /dev/null
+++ b/crash_reporter/kernel_collector.h
@@ -0,0 +1,111 @@
+// Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CRASH_REPORTER_KERNEL_COLLECTOR_H_
+#define CRASH_REPORTER_KERNEL_COLLECTOR_H_
+
+#include <pcrecpp.h>
+
+#include <string>
+
+#include <base/files/file_path.h>
+#include <base/macros.h>
+#include <gtest/gtest_prod.h>  // for FRIEND_TEST
+
+#include "crash_collector.h"
+
+// Kernel crash collector.
+class KernelCollector : public CrashCollector {
+ public:
+  // Enumeration to specify architecture type.
+  enum ArchKind {
+    kArchUnknown,
+    kArchArm,
+    kArchMips,
+    kArchX86,
+    kArchX86_64,
+
+    kArchCount  // Number of architectures.
+  };
+
+  KernelCollector();
+
+  ~KernelCollector() override;
+
+  void OverridePreservedDumpPath(const base::FilePath &file_path);
+
+  // Enable collection.
+  bool Enable();
+
+  // Returns true if the kernel collection currently enabled.
+  bool is_enabled() const { return is_enabled_; }
+
+  // Collect any preserved kernel crash dump. Returns true if there was
+  // a dump (even if there were problems storing the dump), false otherwise.
+  bool Collect();
+
+  // Compute a stack signature string from a kernel dump.
+  bool ComputeKernelStackSignature(const std::string &kernel_dump,
+                                   std::string *kernel_signature,
+                                   bool print_diagnostics);
+
+  // Set the architecture of the crash dumps we are looking at.
+  void set_arch(ArchKind arch) { arch_ = arch; }
+  ArchKind arch() const { return arch_; }
+
+ private:
+  friend class KernelCollectorTest;
+  FRIEND_TEST(KernelCollectorTest, LoadPreservedDump);
+  FRIEND_TEST(KernelCollectorTest, StripSensitiveDataBasic);
+  FRIEND_TEST(KernelCollectorTest, StripSensitiveDataBulk);
+  FRIEND_TEST(KernelCollectorTest, StripSensitiveDataSample);
+  FRIEND_TEST(KernelCollectorTest, CollectOK);
+
+  virtual bool DumpDirMounted();
+
+  bool LoadPreservedDump(std::string *contents);
+  void StripSensitiveData(std::string *kernel_dump);
+
+  void GetRamoopsRecordPath(base::FilePath *path, size_t record);
+  bool LoadParameters();
+  bool HasMoreRecords();
+
+  // Read a record to string, modified from file_utils since that didn't
+  // provide a way to restrict the read length.
+  // Return value indicates (only) error state:
+  //  * false when we get an error (can't read from dump location).
+  //  * true if no error occured.
+  // Not finding a valid record is not an error state and is signaled by the
+  // record_found output parameter.
+  bool ReadRecordToString(std::string *contents,
+                          size_t current_record,
+                          bool *record_found);
+
+  void ProcessStackTrace(pcrecpp::StringPiece kernel_dump,
+                         bool print_diagnostics,
+                         unsigned *hash,
+                         float *last_stack_timestamp,
+                         bool *is_watchdog_crash);
+  bool FindCrashingFunction(pcrecpp::StringPiece kernel_dump,
+                            bool print_diagnostics,
+                            float stack_trace_timestamp,
+                            std::string *crashing_function);
+  bool FindPanicMessage(pcrecpp::StringPiece kernel_dump,
+                        bool print_diagnostics,
+                        std::string *panic_message);
+
+  // Returns the architecture kind for which we are built.
+  static ArchKind GetCompilerArch();
+
+  bool is_enabled_;
+  base::FilePath ramoops_dump_path_;
+  size_t records_;
+
+  // The architecture of kernel dump strings we are working with.
+  ArchKind arch_;
+
+  DISALLOW_COPY_AND_ASSIGN(KernelCollector);
+};
+
+#endif  // CRASH_REPORTER_KERNEL_COLLECTOR_H_
diff --git a/crash_reporter/kernel_collector_test.cc b/crash_reporter/kernel_collector_test.cc
new file mode 100644
index 0000000..a534803
--- /dev/null
+++ b/crash_reporter/kernel_collector_test.cc
@@ -0,0 +1,674 @@
+// Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "kernel_collector_test.h"
+
+#include <unistd.h>
+
+#include <base/files/file_util.h>
+#include <base/files/scoped_temp_dir.h>
+#include <base/strings/string_util.h>
+#include <base/strings/stringprintf.h>
+#include <chromeos/syslog_logging.h>
+#include <gtest/gtest.h>
+
+using base::FilePath;
+using base::StringPrintf;
+using chromeos::FindLog;
+using chromeos::GetLog;
+
+namespace {
+
+int s_crashes = 0;
+bool s_metrics = false;
+
+void CountCrash() {
+  ++s_crashes;
+}
+
+bool IsMetrics() {
+  return s_metrics;
+}
+
+}  // namespace
+
+class KernelCollectorTest : public ::testing::Test {
+ protected:
+  void WriteStringToFile(const FilePath &file_path,
+                         const char *data) {
+    ASSERT_EQ(strlen(data), base::WriteFile(file_path, data, strlen(data)));
+  }
+
+  void SetUpSuccessfulCollect();
+  void ComputeKernelStackSignatureCommon();
+
+  const FilePath &kcrash_file() const { return test_kcrash_; }
+  const FilePath &test_crash_directory() const { return test_crash_directory_; }
+
+  KernelCollectorMock collector_;
+
+ private:
+  void SetUp() override {
+    s_crashes = 0;
+    s_metrics = true;
+
+    EXPECT_CALL(collector_, SetUpDBus()).WillRepeatedly(testing::Return());
+
+    collector_.Initialize(CountCrash, IsMetrics);
+    ASSERT_TRUE(scoped_temp_dir_.CreateUniqueTempDir());
+    test_kcrash_ = scoped_temp_dir_.path().Append("kcrash");
+    ASSERT_TRUE(base::CreateDirectory(test_kcrash_));
+    collector_.OverridePreservedDumpPath(test_kcrash_);
+
+    test_kcrash_ = test_kcrash_.Append("dmesg-ramoops-0");
+    ASSERT_FALSE(base::PathExists(test_kcrash_));
+
+    test_crash_directory_ = scoped_temp_dir_.path().Append("crash_directory");
+    ASSERT_TRUE(base::CreateDirectory(test_crash_directory_));
+    chromeos::ClearLog();
+  }
+
+  FilePath test_kcrash_;
+  FilePath test_crash_directory_;
+  base::ScopedTempDir scoped_temp_dir_;
+};
+
+TEST_F(KernelCollectorTest, ComputeKernelStackSignatureBase) {
+  // Make sure the normal build architecture is detected
+  EXPECT_NE(KernelCollector::kArchUnknown, collector_.arch());
+}
+
+TEST_F(KernelCollectorTest, LoadPreservedDump) {
+  ASSERT_FALSE(base::PathExists(kcrash_file()));
+  std::string dump;
+  dump.clear();
+
+  WriteStringToFile(kcrash_file(),
+      "CrashRecordWithoutRamoopsHeader\n<6>[    0.078852]");
+  ASSERT_TRUE(collector_.LoadParameters());
+  ASSERT_TRUE(collector_.LoadPreservedDump(&dump));
+  ASSERT_EQ("CrashRecordWithoutRamoopsHeader\n<6>[    0.078852]", dump);
+
+  WriteStringToFile(kcrash_file(), "====1.1\nsomething");
+  ASSERT_TRUE(collector_.LoadParameters());
+  ASSERT_TRUE(collector_.LoadPreservedDump(&dump));
+  ASSERT_EQ("something", dump);
+
+  WriteStringToFile(kcrash_file(), "\x01\x02\xfe\xff random blob");
+  ASSERT_TRUE(collector_.LoadParameters());
+  ASSERT_FALSE(collector_.LoadPreservedDump(&dump));
+  ASSERT_EQ("", dump);
+}
+
+TEST_F(KernelCollectorTest, EnableMissingKernel) {
+  ASSERT_FALSE(collector_.Enable());
+  ASSERT_FALSE(collector_.is_enabled());
+  ASSERT_TRUE(FindLog(
+      "Kernel does not support crash dumping"));
+  ASSERT_EQ(s_crashes, 0);
+}
+
+TEST_F(KernelCollectorTest, EnableOK) {
+  WriteStringToFile(kcrash_file(), "");
+  EXPECT_CALL(collector_, DumpDirMounted()).WillOnce(::testing::Return(true));
+  ASSERT_TRUE(collector_.Enable());
+  ASSERT_TRUE(collector_.is_enabled());
+  ASSERT_TRUE(FindLog("Enabling kernel crash handling"));
+  ASSERT_EQ(s_crashes, 0);
+}
+
+TEST_F(KernelCollectorTest, StripSensitiveDataBasic) {
+  // Basic tests of StripSensitiveData...
+
+  // Make sure we work OK with a string w/ no MAC addresses.
+  const std::string kCrashWithNoMacsOrig =
+      "<7>[111566.131728] PM: Entering mem sleep\n";
+  std::string crash_with_no_macs(kCrashWithNoMacsOrig);
+  collector_.StripSensitiveData(&crash_with_no_macs);
+  EXPECT_EQ(kCrashWithNoMacsOrig, crash_with_no_macs);
+
+  // Make sure that we handle the case where there's nothing before/after the
+  // MAC address.
+  const std::string kJustAMacOrig =
+      "11:22:33:44:55:66";
+  const std::string kJustAMacStripped =
+      "00:00:00:00:00:01";
+  std::string just_a_mac(kJustAMacOrig);
+  collector_.StripSensitiveData(&just_a_mac);
+  EXPECT_EQ(kJustAMacStripped, just_a_mac);
+
+  // Test MAC addresses crammed together to make sure it gets both of them.
+  //
+  // I'm not sure that the code does ideal on these two test cases (they don't
+  // look like two MAC addresses to me), but since we don't see them I think
+  // it's OK to behave as shown here.
+  const std::string kCrammedMacs1Orig =
+      "11:22:33:44:55:66:11:22:33:44:55:66";
+  const std::string kCrammedMacs1Stripped =
+      "00:00:00:00:00:01:00:00:00:00:00:01";
+  std::string crammed_macs_1(kCrammedMacs1Orig);
+  collector_.StripSensitiveData(&crammed_macs_1);
+  EXPECT_EQ(kCrammedMacs1Stripped, crammed_macs_1);
+
+  const std::string kCrammedMacs2Orig =
+      "11:22:33:44:55:6611:22:33:44:55:66";
+  const std::string kCrammedMacs2Stripped =
+      "00:00:00:00:00:0100:00:00:00:00:01";
+  std::string crammed_macs_2(kCrammedMacs2Orig);
+  collector_.StripSensitiveData(&crammed_macs_2);
+  EXPECT_EQ(kCrammedMacs2Stripped, crammed_macs_2);
+
+  // Test case-sensitiveness (we shouldn't be case-senstive).
+  const std::string kCapsMacOrig =
+      "AA:BB:CC:DD:EE:FF";
+  const std::string kCapsMacStripped =
+      "00:00:00:00:00:01";
+  std::string caps_mac(kCapsMacOrig);
+  collector_.StripSensitiveData(&caps_mac);
+  EXPECT_EQ(kCapsMacStripped, caps_mac);
+
+  const std::string kLowerMacOrig =
+      "aa:bb:cc:dd:ee:ff";
+  const std::string kLowerMacStripped =
+      "00:00:00:00:00:01";
+  std::string lower_mac(kLowerMacOrig);
+  collector_.StripSensitiveData(&lower_mac);
+  EXPECT_EQ(kLowerMacStripped, lower_mac);
+}
+
+TEST_F(KernelCollectorTest, StripSensitiveDataBulk) {
+  // Test calling StripSensitiveData w/ lots of MAC addresses in the "log".
+
+  // Test that stripping code handles more than 256 unique MAC addresses, since
+  // that overflows past the last byte...
+  // We'll write up some code that generates 258 unique MAC addresses.  Sorta
+  // cheating since the code is very similar to the current code in
+  // StripSensitiveData(), but would catch if someone changed that later.
+  std::string lotsa_macs_orig;
+  std::string lotsa_macs_stripped;
+  int i;
+  for (i = 0; i < 258; i++) {
+    lotsa_macs_orig += StringPrintf(" 11:11:11:11:%02X:%02x",
+                                  (i & 0xff00) >> 8, i & 0x00ff);
+    lotsa_macs_stripped += StringPrintf(" 00:00:00:00:%02X:%02x",
+                                     ((i+1) & 0xff00) >> 8, (i+1) & 0x00ff);
+  }
+  std::string lotsa_macs(lotsa_macs_orig);
+  collector_.StripSensitiveData(&lotsa_macs);
+  EXPECT_EQ(lotsa_macs_stripped, lotsa_macs);
+}
+
+TEST_F(KernelCollectorTest, StripSensitiveDataSample) {
+  // Test calling StripSensitiveData w/ some actual lines from a real crash;
+  // included two MAC addresses (though replaced them with some bogusness).
+  const std::string kCrashWithMacsOrig =
+      "<6>[111567.195339] ata1.00: ACPI cmd ef/10:03:00:00:00:a0 (SET FEATURES)"
+        " filtered out\n"
+      "<7>[108539.540144] wlan0: authenticate with 11:22:33:44:55:66 (try 1)\n"
+      "<7>[108539.554973] wlan0: associate with 11:22:33:44:55:66 (try 1)\n"
+      "<6>[110136.587583] usb0: register 'QCUSBNet2k' at usb-0000:00:1d.7-2,"
+        " QCUSBNet Ethernet Device, 99:88:77:66:55:44\n"
+      "<7>[110964.314648] wlan0: deauthenticated from 11:22:33:44:55:66"
+        " (Reason: 6)\n"
+      "<7>[110964.325057] phy0: Removed STA 11:22:33:44:55:66\n"
+      "<7>[110964.325115] phy0: Destroyed STA 11:22:33:44:55:66\n"
+      "<6>[110969.219172] usb0: register 'QCUSBNet2k' at usb-0000:00:1d.7-2,"
+        " QCUSBNet Ethernet Device, 99:88:77:66:55:44\n"
+      "<7>[111566.131728] PM: Entering mem sleep\n";
+  const std::string kCrashWithMacsStripped =
+      "<6>[111567.195339] ata1.00: ACPI cmd ef/10:03:00:00:00:a0 (SET FEATURES)"
+        " filtered out\n"
+      "<7>[108539.540144] wlan0: authenticate with 00:00:00:00:00:01 (try 1)\n"
+      "<7>[108539.554973] wlan0: associate with 00:00:00:00:00:01 (try 1)\n"
+      "<6>[110136.587583] usb0: register 'QCUSBNet2k' at usb-0000:00:1d.7-2,"
+        " QCUSBNet Ethernet Device, 00:00:00:00:00:02\n"
+      "<7>[110964.314648] wlan0: deauthenticated from 00:00:00:00:00:01"
+        " (Reason: 6)\n"
+      "<7>[110964.325057] phy0: Removed STA 00:00:00:00:00:01\n"
+      "<7>[110964.325115] phy0: Destroyed STA 00:00:00:00:00:01\n"
+      "<6>[110969.219172] usb0: register 'QCUSBNet2k' at usb-0000:00:1d.7-2,"
+        " QCUSBNet Ethernet Device, 00:00:00:00:00:02\n"
+      "<7>[111566.131728] PM: Entering mem sleep\n";
+  std::string crash_with_macs(kCrashWithMacsOrig);
+  collector_.StripSensitiveData(&crash_with_macs);
+  EXPECT_EQ(kCrashWithMacsStripped, crash_with_macs);
+}
+
+TEST_F(KernelCollectorTest, CollectPreservedFileMissing) {
+  ASSERT_FALSE(collector_.Collect());
+  ASSERT_FALSE(FindLog("Stored kcrash to "));
+  ASSERT_EQ(0, s_crashes);
+}
+
+TEST_F(KernelCollectorTest, CollectBadDirectory) {
+  WriteStringToFile(kcrash_file(), "====1.1\nsomething");
+  ASSERT_TRUE(collector_.Collect());
+  ASSERT_TRUE(FindLog("Unable to create appropriate crash directory"))
+      << "Did not find expected error string in log: {\n"
+      << GetLog() << "}";
+  ASSERT_EQ(1, s_crashes);
+}
+
+void KernelCollectorTest::SetUpSuccessfulCollect() {
+  collector_.ForceCrashDirectory(test_crash_directory());
+  WriteStringToFile(kcrash_file(), "====1.1\nsomething");
+  ASSERT_EQ(0, s_crashes);
+}
+
+TEST_F(KernelCollectorTest, CollectOptedOut) {
+  SetUpSuccessfulCollect();
+  s_metrics = false;
+  ASSERT_TRUE(collector_.Collect());
+  ASSERT_TRUE(FindLog("(ignoring - no consent)"));
+  ASSERT_EQ(0, s_crashes);
+}
+
+TEST_F(KernelCollectorTest, CollectOK) {
+  SetUpSuccessfulCollect();
+  ASSERT_TRUE(collector_.Collect());
+  ASSERT_EQ(1, s_crashes);
+  ASSERT_TRUE(FindLog("(handling)"));
+  static const char kNamePrefix[] = "Stored kcrash to ";
+  std::string log = chromeos::GetLog();
+  size_t pos = log.find(kNamePrefix);
+  ASSERT_NE(std::string::npos, pos)
+      << "Did not find string \"" << kNamePrefix << "\" in log: {\n"
+      << log << "}";
+  pos += strlen(kNamePrefix);
+  std::string filename = log.substr(pos, std::string::npos);
+  // Take the name up until \n
+  size_t end_pos = filename.find_first_of("\n");
+  ASSERT_NE(std::string::npos, end_pos);
+  filename = filename.substr(0, end_pos);
+  ASSERT_EQ(0, filename.find(test_crash_directory().value()));
+  ASSERT_TRUE(base::PathExists(FilePath(filename)));
+  std::string contents;
+  ASSERT_TRUE(base::ReadFileToString(FilePath(filename), &contents));
+  ASSERT_EQ("something", contents);
+}
+
+// Perform tests which are common across architectures
+void KernelCollectorTest::ComputeKernelStackSignatureCommon() {
+  std::string signature;
+
+  const char kStackButNoPC[] =
+      "<4>[ 6066.829029]  [<790340af>] __do_softirq+0xa6/0x143\n";
+  EXPECT_TRUE(
+      collector_.ComputeKernelStackSignature(kStackButNoPC, &signature, false));
+  EXPECT_EQ("kernel--83615F0A", signature);
+
+  const char kMissingEverything[] =
+      "<4>[ 6066.829029]  [<790340af>] ? __do_softirq+0xa6/0x143\n";
+  EXPECT_FALSE(
+      collector_.ComputeKernelStackSignature(kMissingEverything,
+                                             &signature,
+                                             false));
+
+  // Long message.
+  const char kTruncatedMessage[] =
+      "<0>[   87.485611] Kernel panic - not syncing: 01234567890123456789"
+          "01234567890123456789X\n";
+  EXPECT_TRUE(
+      collector_.ComputeKernelStackSignature(kTruncatedMessage,
+                                             &signature,
+                                             false));
+  EXPECT_EQ("kernel-0123456789012345678901234567890123456789-00000000",
+            signature);
+}
+
+TEST_F(KernelCollectorTest, ComputeKernelStackSignatureARM) {
+  const char kBugToPanic[] =
+      "<5>[  123.412524] Modules linked in:\n"
+      "<5>[  123.412534] CPU: 0    Tainted: G        W    "
+          "(2.6.37-01030-g51cee64 #153)\n"
+      "<5>[  123.412552] PC is at write_breakme+0xd0/0x1b4\n"
+      "<5>[  123.412560] LR is at write_breakme+0xc8/0x1b4\n"
+      "<5>[  123.412569] pc : [<c0058220>]    lr : [<c005821c>]    "
+          "psr: 60000013\n"
+      "<5>[  123.412574] sp : f4e0ded8  ip : c04d104c  fp : 000e45e0\n"
+      "<5>[  123.412581] r10: 400ff000  r9 : f4e0c000  r8 : 00000004\n"
+      "<5>[  123.412589] r7 : f4e0df80  r6 : f4820c80  r5 : 00000004  "
+          "r4 : f4e0dee8\n"
+      "<5>[  123.412598] r3 : 00000000  r2 : f4e0decc  r1 : c05f88a9  "
+          "r0 : 00000039\n"
+      "<5>[  123.412608] Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA "
+          "ARM  Segment user\n"
+      "<5>[  123.412617] Control: 10c53c7d  Table: 34dcc04a  DAC: 00000015\n"
+      "<0>[  123.412626] Process bash (pid: 1014, stack limit = 0xf4e0c2f8)\n"
+      "<0>[  123.412634] Stack: (0xf4e0ded8 to 0xf4e0e000)\n"
+      "<0>[  123.412641] dec0:                                              "
+          "         f4e0dee8 c0183678\n"
+      "<0>[  123.412654] dee0: 00000000 00000000 00677562 0000081f c06a6a78 "
+          "400ff000 f4e0dfb0 00000000\n"
+      "<0>[  123.412666] df00: bec7ab44 000b1719 bec7ab0c c004f498 bec7a314 "
+          "c024acc8 00000001 c018359c\n"
+      "<0>[  123.412679] df20: f4e0df34 c04d10fc f5803c80 271beb39 000e45e0 "
+          "f5803c80 c018359c c017bfe0\n"
+      "<0>[  123.412691] df40: 00000004 f4820c80 400ff000 f4e0df80 00000004 "
+          "f4e0c000 00000000 c01383e4\n"
+      "<0>[  123.412703] df60: f4820c80 400ff000 f4820c80 400ff000 00000000 "
+          "00000000 00000004 c0138578\n"
+      "<0>[  123.412715] df80: 00000000 00000000 00000004 00000000 00000004 "
+          "402f95d0 00000004 00000004\n"
+      "<0>[  123.412727] dfa0: c0054984 c00547c0 00000004 402f95d0 00000001 "
+          "400ff000 00000004 00000000\n"
+      "<0>[  123.412739] dfc0: 00000004 402f95d0 00000004 00000004 400ff000 "
+          "000c194c bec7ab58 000e45e0\n"
+      "<0>[  123.412751] dfe0: 00000000 bec7aad8 40232520 40284e9c 60000010 "
+          "00000001 00000000 00000000\n"
+      "<5>[   39.496577] Backtrace:\n"
+      "<5>[  123.412782] [<c0058220>] (__bug+0x20/0x2c) from [<c0183678>] "
+          "(write_breakme+0xdc/0x1bc)\n"
+      "<5>[  123.412798] [<c0183678>] (write_breakme+0xdc/0x1bc) from "
+          "[<c017bfe0>] (proc_reg_write+0x88/0x9c)\n";
+  std::string signature;
+
+  collector_.set_arch(KernelCollector::kArchArm);
+  EXPECT_TRUE(
+      collector_.ComputeKernelStackSignature(kBugToPanic, &signature, false));
+  EXPECT_EQ("kernel-write_breakme-97D3E92F", signature);
+
+  ComputeKernelStackSignatureCommon();
+}
+
+TEST_F(KernelCollectorTest, ComputeKernelStackSignatureMIPS) {
+  const char kBugToPanic[] =
+      "<5>[ 3378.472000] lkdtm: Performing direct entry BUG\n"
+      "<5>[ 3378.476000] Kernel bug detected[#1]:\n"
+      "<5>[ 3378.484000] CPU: 0 PID: 185 Comm: dash Not tainted 3.14.0 #1\n"
+      "<5>[ 3378.488000] task: 8fed5220 ti: 8ec4a000 task.ti: 8ec4a000\n"
+      "<5>[ 3378.496000] $ 0   : 00000000 804018b8 804010f0 7785b507\n"
+      "<5>[ 3378.500000] $ 4   : 8061ab64 81204478 81205b20 00000000\n"
+      "<5>[ 3378.508000] $ 8   : 80830000 20746365 72746e65 55422079\n"
+      "<5>[ 3378.512000] $12   : 8ec4be94 000000fc 00000000 00000048\n"
+      "<5>[ 3378.520000] $16   : 00000004 8ef54000 80710000 00000002\n"
+      "<5>[ 3378.528000] $20   : 7765b6d4 00000004 7fffffff 00000002\n"
+      "<5>[ 3378.532000] $24   : 00000001 803dc0dc                  \n"
+      "<5>[ 3378.540000] $28   : 8ec4a000 8ec4be20 7775438d 804018b8\n"
+      "<5>[ 3378.544000] Hi    : 00000000\n"
+      "<5>[ 3378.548000] Lo    : 49bf8080\n"
+      "<5>[ 3378.552000] epc   : 804010f0 lkdtm_do_action+0x68/0x3f8\n"
+      "<5>[ 3378.560000]     Not tainted\n"
+      "<5>[ 3378.564000] ra    : 804018b8 direct_entry+0x110/0x154\n"
+      "<5>[ 3378.568000] Status: 3100dc03 KERNEL EXL IE \n"
+      "<5>[ 3378.572000] Cause : 10800024\n"
+      "<5>[ 3378.576000] PrId  : 0001a120 (MIPS interAptiv (multi))\n"
+      "<5>[ 3378.580000] Modules linked in: uinput cfg80211 nf_conntrack_ipv6 "
+          "nf_defrag_ipv6 ip6table_filter ip6_tables pcnet32 mii fuse "
+          "ppp_async ppp_generic slhc tun\n"
+      "<5>[ 3378.600000] Process dash (pid: 185, threadinfo=8ec4a000, "
+          "task=8fed5220, tls=77632490)\n"
+      "<5>[ 3378.608000] Stack : 00000006 ffffff9c 00000000 00000000 00000000 "
+          "00000000 8083454a 00000022\n"
+      "<5>          7765baa1 00001fee 80710000 8ef54000 8ec4bf08 00000002 "
+          "7765b6d4 00000004\n"
+      "<5>          7fffffff 00000002 7775438d 805e5158 7fffffff 00000002 "
+          "00000000 7785b507\n"
+      "<5>          806a96bc 00000004 8ef54000 8ec4bf08 00000002 804018b8 "
+          "80710000 806a98bc\n"
+      "<5>          00000002 00000020 00000004 8d515600 77756450 00000004 "
+          "8ec4bf08 802377e4\n"
+      "<5>          ...\n"
+      "<5>[ 3378.652000] Call Trace:\n"
+      "<5>[ 3378.656000] [<804010f0>] lkdtm_do_action+0x68/0x3f8\n"
+      "<5>[ 3378.660000] [<804018b8>] direct_entry+0x110/0x154\n"
+      "<5>[ 3378.664000] [<802377e4>] vfs_write+0xe0/0x1bc\n"
+      "<5>[ 3378.672000] [<80237f90>] SyS_write+0x78/0xf8\n"
+      "<5>[ 3378.676000] [<80111888>] handle_sys+0x128/0x14c\n"
+      "<5>[ 3378.680000] \n"
+      "<5>[ 3378.684000] \n"
+      "<5>Code: 3c04806b  0c1793aa  248494f0 <000c000d> 3c04806b  248494fc  "
+          "0c04cc7f  2405017a  08100514 \n"
+      "<5>[ 3378.696000] ---[ end trace 75067432f24bbc93 ]---\n";
+  std::string signature;
+
+  collector_.set_arch(KernelCollector::kArchMips);
+  EXPECT_TRUE(
+      collector_.ComputeKernelStackSignature(kBugToPanic, &signature, false));
+  EXPECT_EQ("kernel-lkdtm_do_action-5E600A6B", signature);
+
+  ComputeKernelStackSignatureCommon();
+}
+
+TEST_F(KernelCollectorTest, ComputeKernelStackSignatureX86) {
+  const char kBugToPanic[] =
+      "<4>[ 6066.829029]  [<79039d16>] ? run_timer_softirq+0x165/0x1e6\n"
+      "<4>[ 6066.829029]  [<790340af>] ignore_old_stack+0xa6/0x143\n"
+      "<0>[ 6066.829029] EIP: [<b82d7c15>] ieee80211_stop_tx_ba_session+"
+          "0xa3/0xb5 [mac80211] SS:ESP 0068:7951febc\n"
+      "<0>[ 6066.829029] CR2: 00000000323038a7\n"
+      "<4>[ 6066.845422] ---[ end trace 12b058bb46c43500 ]---\n"
+      "<0>[ 6066.845747] Kernel panic - not syncing: Fatal exception "
+          "in interrupt\n"
+      "<0>[ 6066.846902] Call Trace:\n"
+      "<4>[ 6066.846902]  [<7937a07b>] ? printk+0x14/0x19\n"
+      "<4>[ 6066.949779]  [<79379fc1>] panic+0x3e/0xe4\n"
+      "<4>[ 6066.949971]  [<7937c5c5>] oops_end+0x73/0x81\n"
+      "<4>[ 6066.950208]  [<7901b260>] no_context+0x10d/0x117\n";
+  std::string signature;
+
+  collector_.set_arch(KernelCollector::kArchX86);
+  EXPECT_TRUE(
+      collector_.ComputeKernelStackSignature(kBugToPanic, &signature, false));
+  EXPECT_EQ("kernel-ieee80211_stop_tx_ba_session-DE253569", signature);
+
+  const char kPCButNoStack[] =
+      "<0>[ 6066.829029] EIP: [<b82d7c15>] ieee80211_stop_tx_ba_session+";
+  EXPECT_TRUE(
+      collector_.ComputeKernelStackSignature(kPCButNoStack, &signature, false));
+  EXPECT_EQ("kernel-ieee80211_stop_tx_ba_session-00000000", signature);
+
+  const char kBreakmeBug[] =
+      "<4>[  180.492137]  [<790970c6>] ? handle_mm_fault+0x67f/0x96d\n"
+      "<4>[  180.492137]  [<790dcdfe>] ? proc_reg_write+0x5f/0x73\n"
+      "<4>[  180.492137]  [<790e2224>] ? write_breakme+0x0/0x108\n"
+      "<4>[  180.492137]  [<790dcd9f>] ? proc_reg_write+0x0/0x73\n"
+      "<4>[  180.492137]  [<790ac0aa>] vfs_write+0x85/0xe4\n"
+      "<0>[  180.492137] Code: c6 44 05 b2 00 89 d8 e8 0c ef 09 00 85 c0 75 "
+      "0b c7 00 00 00 00 00 e9 8e 00 00 00 ba e6 75 4b 79 89 d8 e8 f1 ee 09 "
+      "00 85 c0 75 04 <0f> 0b eb fe ba 58 47 49 79 89 d8 e8 dd ee 09 00 85 "
+      "c0 75 0a 68\n"
+      "<0>[  180.492137] EIP: [<790e22a4>] write_breakme+0x80/0x108 SS:ESP "
+          "0068:aa3e9efc\n"
+      "<4>[  180.501800] ---[ end trace 2a6b72965e1b1523 ]---\n"
+      "<0>[  180.502026] Kernel panic - not syncing: Fatal exception\n"
+      "<4>[  180.502026] Call Trace:\n"
+      "<4>[  180.502806]  [<79379aba>] ? printk+0x14/0x1a\n"
+      "<4>[  180.503033]  [<79379a00>] panic+0x3e/0xe4\n"
+      "<4>[  180.503287]  [<7937c005>] oops_end+0x73/0x81\n"
+      "<4>[  180.503520]  [<790055dd>] die+0x58/0x5e\n"
+      "<4>[  180.503538]  [<7937b96c>] do_trap+0x8e/0xa7\n"
+      "<4>[  180.503555]  [<79003d70>] ? do_invalid_op+0x0/0x80\n";
+
+  EXPECT_TRUE(
+      collector_.ComputeKernelStackSignature(kBreakmeBug, &signature, false));
+  EXPECT_EQ("kernel-write_breakme-122AB3CD", signature);
+
+  const char kPCLineTooOld[] =
+      "<4>[  174.492137]  [<790970c6>] ignored_function+0x67f/0x96d\n"
+      "<4>[  175.492137]  [<790970c6>] ignored_function2+0x67f/0x96d\n"
+      "<0>[  174.492137] EIP: [<790e22a4>] write_breakme+0x80/0x108 SS:ESP "
+          "0068:aa3e9efc\n"
+      "<4>[  180.501800] ---[ end trace 2a6b72965e1b1523 ]---\n"
+      "<4>[  180.502026] Call Trace:\n"
+      "<0>[  180.502026] Kernel panic - not syncing: Fatal exception\n"
+      "<4>[  180.502806]  [<79379aba>] printk+0x14/0x1a\n";
+
+  EXPECT_TRUE(
+      collector_.ComputeKernelStackSignature(kPCLineTooOld, &signature, false));
+  EXPECT_EQ("kernel-Fatal exception-ED4C84FE", signature);
+
+  // Panic without EIP line.
+  const char kExamplePanicOnly[] =
+      "<0>[   87.485611] Kernel panic - not syncing: Testing panic\n"
+      "<4>[   87.485630] Pid: 2825, comm: bash Tainted: G         "
+          "C 2.6.32.23+drm33.10 #1\n"
+      "<4>[   87.485639] Call Trace:\n"
+      "<4>[   87.485660]  [<8133f71d>] ? printk+0x14/0x17\n"
+      "<4>[   87.485674]  [<8133f663>] panic+0x3e/0xe4\n"
+      "<4>[   87.485689]  [<810d062e>] write_breakme+0xaa/0x124\n";
+  EXPECT_TRUE(
+      collector_.ComputeKernelStackSignature(kExamplePanicOnly,
+                                             &signature,
+                                             false));
+  EXPECT_EQ("kernel-Testing panic-E0FC3552", signature);
+
+  // Panic from hung task.
+  const char kHungTaskBreakMe[] =
+      "<3>[  720.459157] INFO: task bash:2287 blocked blah blah\n"
+      "<5>[  720.459282] Call Trace:\n"
+      "<5>[  720.459307]  [<810a457b>] ? __dentry_open+0x186/0x23e\n"
+      "<5>[  720.459323]  [<810b9c71>] ? mntput_no_expire+0x29/0xe2\n"
+      "<5>[  720.459336]  [<810b9d48>] ? mntput+0x1e/0x20\n"
+      "<5>[  720.459350]  [<810ad135>] ? path_put+0x1a/0x1d\n"
+      "<5>[  720.459366]  [<8137cacc>] schedule+0x4d/0x4f\n"
+      "<5>[  720.459379]  [<8137ccfb>] schedule_timeout+0x26/0xaf\n"
+      "<5>[  720.459394]  [<8102127e>] ? should_resched+0xd/0x27\n"
+      "<5>[  720.459409]  [<81174d1f>] ? _copy_from_user+0x3c/0x50\n"
+      "<5>[  720.459423]  [<8137cd9e>] "
+      "schedule_timeout_uninterruptible+0x1a/0x1c\n"
+      "<5>[  720.459438]  [<810dee63>] write_breakme+0xb3/0x178\n"
+      "<5>[  720.459453]  [<810dedb0>] ? meminfo_proc_show+0x2f2/0x2f2\n"
+      "<5>[  720.459467]  [<810d94ae>] proc_reg_write+0x6d/0x87\n"
+      "<5>[  720.459481]  [<810d9441>] ? proc_reg_poll+0x76/0x76\n"
+      "<5>[  720.459493]  [<810a5e9e>] vfs_write+0x79/0xa5\n"
+      "<5>[  720.459505]  [<810a6011>] sys_write+0x40/0x65\n"
+      "<5>[  720.459519]  [<8137e677>] sysenter_do_call+0x12/0x26\n"
+      "<0>[  720.459530] Kernel panic - not syncing: hung_task: blocked tasks\n"
+      "<5>[  720.459768] Pid: 31, comm: khungtaskd Tainted: "
+      "G         C  3.0.8 #1\n"
+      "<5>[  720.459998] Call Trace:\n"
+      "<5>[  720.460140]  [<81378a35>] panic+0x53/0x14a\n"
+      "<5>[  720.460312]  [<8105f875>] watchdog+0x15b/0x1a0\n"
+      "<5>[  720.460495]  [<8105f71a>] ? hung_task_panic+0x16/0x16\n"
+      "<5>[  720.460693]  [<81043af3>] kthread+0x67/0x6c\n"
+      "<5>[  720.460862]  [<81043a8c>] ? __init_kthread_worker+0x2d/0x2d\n"
+      "<5>[  720.461106]  [<8137eb9e>] kernel_thread_helper+0x6/0x10\n";
+
+  EXPECT_TRUE(
+      collector_.ComputeKernelStackSignature(kHungTaskBreakMe,
+                                             &signature,
+                                             false));
+
+  EXPECT_EQ("kernel-(HANG)-hung_task: blocked tasks-600B37EA", signature);
+
+  // Panic with all question marks in the last stack trace.
+  const char kUncertainStackTrace[] =
+      "<0>[56279.689669] ------------[ cut here ]------------\n"
+      "<2>[56279.689677] kernel BUG at /build/x86-alex/tmp/portage/"
+      "sys-kernel/chromeos-kernel-0.0.1-r516/work/chromeos-kernel-0.0.1/"
+      "kernel/timer.c:844!\n"
+      "<0>[56279.689683] invalid opcode: 0000 [#1] SMP \n"
+      "<0>[56279.689688] last sysfs file: /sys/power/state\n"
+      "<5>[56279.689692] Modules linked in: nls_iso8859_1 nls_cp437 vfat fat "
+      "gobi usbnet tsl2583(C) industrialio(C) snd_hda_codec_realtek "
+      "snd_hda_intel i2c_dev snd_hda_codec snd_hwdep qcserial snd_pcm usb_wwan "
+      "i2c_i801 snd_timer nm10_gpio snd_page_alloc rtc_cmos fuse "
+      "nf_conntrack_ipv6 nf_defrag_ipv6 uvcvideo videodev ip6table_filter "
+      "ath9k ip6_tables ipv6 mac80211 ath9k_common ath9k_hw ath cfg80211 "
+      "xt_mark\n"
+      "<5>[56279.689731] \n"
+      "<5>[56279.689738] Pid: 24607, comm: powerd_suspend Tainted: G        "
+      "WC  2.6.38.3+ #1 SAMSUNG ELECTRONICS CO., LTD. Alex/G100          \n"
+      "<5>[56279.689748] EIP: 0060:[<8103e3ea>] EFLAGS: 00210286 CPU: 3\n"
+      "<5>[56279.689758] EIP is at add_timer+0xd/0x1b\n"
+      "<5>[56279.689762] EAX: f5e00684 EBX: f5e003c0 ECX: 00000002 EDX: "
+      "00200246\n"
+      "<5>[56279.689767] ESI: f5e003c0 EDI: d28bc03c EBP: d2be5e40 ESP: "
+      "d2be5e40\n"
+      "<5>[56279.689772]  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068\n"
+      "<0>[56279.689778] Process powerd_suspend (pid: 24607, ti=d2be4000 "
+      "task=f5dc9b60 task.ti=d2be4000)\n"
+      "<0>[56279.689782] Stack:\n"
+      "<5>[56279.689785]  d2be5e4c f8dccced f4ac02c0 d2be5e70 f8ddc752 "
+      "f5e003c0 f4ac0458 f4ac092c\n"
+      "<5>[56279.689797]  f4ac043c f4ac02c0 f4ac0000 f4ac007c d2be5e7c "
+      "f8dd4a33 f4ac0164 d2be5e94\n"
+      "<5>[56279.689809]  f87e0304 f69ff0cc f4ac0164 f87e02a4 f4ac0164 "
+      "d2be5eb0 81248968 00000000\n"
+      "<0>[56279.689821] Call Trace:\n"
+      "<5>[56279.689840]  [<f8dccced>] ieee80211_sta_restart+0x25/0x8c "
+      "[mac80211]\n"
+      "<5>[56279.689854]  [<f8ddc752>] ieee80211_reconfig+0x2e9/0x339 "
+      "[mac80211]\n"
+      "<5>[56279.689869]  [<f8dd4a33>] ieee80211_aes_cmac+0x182d/0x184e "
+      "[mac80211]\n"
+      "<5>[56279.689883]  [<f87e0304>] cfg80211_get_dev_from_info+0x29b/0x2c0 "
+      "[cfg80211]\n"
+      "<5>[56279.689895]  [<f87e02a4>] ? "
+      "cfg80211_get_dev_from_info+0x23b/0x2c0 [cfg80211]\n"
+      "<5>[56279.689904]  [<81248968>] legacy_resume+0x25/0x5d\n"
+      "<5>[56279.689910]  [<812490ae>] device_resume+0xdd/0x110\n"
+      "<5>[56279.689917]  [<812491c2>] dpm_resume_end+0xe1/0x271\n"
+      "<5>[56279.689925]  [<81060481>] suspend_devices_and_enter+0x18b/0x1de\n"
+      "<5>[56279.689932]  [<810605ba>] enter_state+0xe6/0x132\n"
+      "<5>[56279.689939]  [<8105fd4b>] state_store+0x91/0x9d\n"
+      "<5>[56279.689945]  [<8105fcba>] ? state_store+0x0/0x9d\n"
+      "<5>[56279.689953]  [<81178fb1>] kobj_attr_store+0x16/0x22\n"
+      "<5>[56279.689961]  [<810eea5e>] sysfs_write_file+0xc1/0xec\n"
+      "<5>[56279.689969]  [<810af443>] vfs_write+0x8f/0x101\n"
+      "<5>[56279.689975]  [<810ee99d>] ? sysfs_write_file+0x0/0xec\n"
+      "<5>[56279.689982]  [<810af556>] sys_write+0x40/0x65\n"
+      "<5>[56279.689989]  [<81002d57>] sysenter_do_call+0x12/0x26\n"
+      "<0>[56279.689993] Code: c1 d3 e2 4a 89 55 f4 f7 d2 21 f2 6a 00 31 c9 89 "
+      "d8 e8 6e fd ff ff 5a 8d 65 f8 5b 5e 5d c3 55 89 e5 3e 8d 74 26 00 83 38 "
+      "00 74 04 <0f> 0b eb fe 8b 50 08 e8 6f ff ff ff 5d c3 55 89 e5 3e 8d 74 "
+      "26 \n"
+      "<0>[56279.690009] EIP: [<8103e3ea>] add_timer+0xd/0x1b SS:ESP "
+      "0068:d2be5e40\n"
+      "<4>[56279.690113] ---[ end trace b71141bb67c6032a ]---\n"
+      "<7>[56279.694069] wlan0: deauthenticated from 00:00:00:00:00:01 "
+      "(Reason: 6)\n"
+      "<0>[56279.703465] Kernel panic - not syncing: Fatal exception\n"
+      "<5>[56279.703471] Pid: 24607, comm: powerd_suspend Tainted: G      D "
+      "WC  2.6.38.3+ #1\n"
+      "<5>[56279.703475] Call Trace:\n"
+      "<5>[56279.703483]  [<8136648c>] ? panic+0x55/0x152\n"
+      "<5>[56279.703491]  [<810057fa>] ? oops_end+0x73/0x81\n"
+      "<5>[56279.703497]  [<81005a44>] ? die+0xed/0xf5\n"
+      "<5>[56279.703503]  [<810033cb>] ? do_trap+0x7a/0x80\n"
+      "<5>[56279.703509]  [<8100369b>] ? do_invalid_op+0x0/0x80\n"
+      "<5>[56279.703515]  [<81003711>] ? do_invalid_op+0x76/0x80\n"
+      "<5>[56279.703522]  [<8103e3ea>] ? add_timer+0xd/0x1b\n"
+      "<5>[56279.703529]  [<81025e23>] ? check_preempt_curr+0x2e/0x69\n"
+      "<5>[56279.703536]  [<8102ef28>] ? ttwu_post_activation+0x5a/0x11b\n"
+      "<5>[56279.703543]  [<8102fa8d>] ? try_to_wake_up+0x213/0x21d\n"
+      "<5>[56279.703550]  [<81368b7f>] ? error_code+0x67/0x6c\n"
+      "<5>[56279.703557]  [<8103e3ea>] ? add_timer+0xd/0x1b\n"
+      "<5>[56279.703577]  [<f8dccced>] ? ieee80211_sta_restart+0x25/0x8c "
+      "[mac80211]\n"
+      "<5>[56279.703591]  [<f8ddc752>] ? ieee80211_reconfig+0x2e9/0x339 "
+      "[mac80211]\n"
+      "<5>[56279.703605]  [<f8dd4a33>] ? ieee80211_aes_cmac+0x182d/0x184e "
+      "[mac80211]\n"
+      "<5>[56279.703618]  [<f87e0304>] ? "
+      "cfg80211_get_dev_from_info+0x29b/0x2c0 [cfg80211]\n"
+      "<5>[56279.703630]  [<f87e02a4>] ? "
+      "cfg80211_get_dev_from_info+0x23b/0x2c0 [cfg80211]\n"
+      "<5>[56279.703637]  [<81248968>] ? legacy_resume+0x25/0x5d\n"
+      "<5>[56279.703643]  [<812490ae>] ? device_resume+0xdd/0x110\n"
+      "<5>[56279.703649]  [<812491c2>] ? dpm_resume_end+0xe1/0x271\n"
+      "<5>[56279.703657]  [<81060481>] ? "
+      "suspend_devices_and_enter+0x18b/0x1de\n"
+      "<5>[56279.703663]  [<810605ba>] ? enter_state+0xe6/0x132\n"
+      "<5>[56279.703670]  [<8105fd4b>] ? state_store+0x91/0x9d\n"
+      "<5>[56279.703676]  [<8105fcba>] ? state_store+0x0/0x9d\n"
+      "<5>[56279.703683]  [<81178fb1>] ? kobj_attr_store+0x16/0x22\n"
+      "<5>[56279.703690]  [<810eea5e>] ? sysfs_write_file+0xc1/0xec\n"
+      "<5>[56279.703697]  [<810af443>] ? vfs_write+0x8f/0x101\n"
+      "<5>[56279.703703]  [<810ee99d>] ? sysfs_write_file+0x0/0xec\n"
+      "<5>[56279.703709]  [<810af556>] ? sys_write+0x40/0x65\n"
+      "<5>[56279.703716]  [<81002d57>] ? sysenter_do_call+0x12/0x26\n";
+
+  EXPECT_TRUE(
+      collector_.ComputeKernelStackSignature(kUncertainStackTrace,
+                                             &signature,
+                                             false));
+  // The first trace contains only uncertain entries and its hash is 00000000,
+  // so, if we used that, the signature would be kernel-add_timer-00000000.
+  // Instead we use the second-to-last trace for the hash.
+  EXPECT_EQ("kernel-add_timer-B5178878", signature);
+
+  ComputeKernelStackSignatureCommon();
+}
diff --git a/crash_reporter/kernel_collector_test.h b/crash_reporter/kernel_collector_test.h
new file mode 100644
index 0000000..d450134
--- /dev/null
+++ b/crash_reporter/kernel_collector_test.h
@@ -0,0 +1,19 @@
+// Copyright 2014 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CRASH_REPORTER_KERNEL_COLLECTOR_TEST_H_
+#define CRASH_REPORTER_KERNEL_COLLECTOR_TEST_H_
+
+#include "kernel_collector.h"
+
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+
+class KernelCollectorMock : public KernelCollector {
+ public:
+  MOCK_METHOD0(DumpDirMounted, bool());
+  MOCK_METHOD0(SetUpDBus, void());
+};
+
+#endif  // CRASH_REPORTER_KERNEL_COLLECTOR_TEST_H_
diff --git a/crash_reporter/kernel_log_collector.sh b/crash_reporter/kernel_log_collector.sh
new file mode 100644
index 0000000..d38479e
--- /dev/null
+++ b/crash_reporter/kernel_log_collector.sh
@@ -0,0 +1,49 @@
+#!/bin/sh
+
+# Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# Usage example: "kernel_log_collector.sh XXX YYY"
+# This script searches logs in the /var/log/messages which have the keyword XXX.
+# And only those logs which are within the last YYY seconds of the latest log
+# that has the keyword XXX are printed.
+
+# Kernel log has the possible formats:
+# 2013-06-14T16:31:40.514513-07:00 localhost kernel: [    2.682472] MSG MSG ...
+# 2013-06-19T20:38:58.661826+00:00 localhost kernel: [    1.668092] MSG MSG ...
+
+search_key=$1
+time_duration=$2
+msg_pattern="^[0-9-]*T[0-9:.+-]* localhost kernel"
+
+die() {
+  echo "kernel_log_collector: $*" >&2
+  exit 1
+}
+
+get_timestamp() {
+  timestamp="$(echo $1 | cut -d " " -f 1)"
+  timestamp="$(date -d "${timestamp}" +%s)" || exit $?
+  echo "${timestamp}"
+}
+
+last_line=$(grep "${msg_pattern}" /var/log/messages | grep -- "${search_key}" | tail -n 1)
+
+if [ -n "${last_line}" ]; then
+  if ! allowed_timestamp=$(get_timestamp "${last_line}"); then
+    die "coule not get timestamp from: ${last_line}"
+  fi
+  : $(( allowed_timestamp -= ${time_duration} ))
+  grep "${msg_pattern}" /var/log/messages | grep -- "${search_key}" | while read line; do
+    if ! timestamp=$(get_timestamp "${line}"); then
+      die "could not get timestamp from: ${line}"
+    fi
+    if [ ${timestamp} -gt ${allowed_timestamp} ]; then
+      echo "${line}"
+    fi
+  done
+fi
+
+echo "END-OF-LOG"
+
diff --git a/crash_reporter/kernel_warning_collector.cc b/crash_reporter/kernel_warning_collector.cc
new file mode 100644
index 0000000..4cf7640
--- /dev/null
+++ b/crash_reporter/kernel_warning_collector.cc
@@ -0,0 +1,101 @@
+// Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "kernel_warning_collector.h"
+
+#include <base/files/file_util.h>
+#include <base/logging.h>
+#include <base/strings/string_number_conversions.h>
+#include <base/strings/string_util.h>
+#include <base/strings/stringprintf.h>
+
+namespace {
+const char kExecName[] = "kernel-warning";
+const char kKernelWarningSignatureKey[] = "sig";
+const char kKernelWarningPath[] = "/var/run/kwarn/warning";
+const pid_t kKernelPid = 0;
+const uid_t kRootUid = 0;
+}  // namespace
+
+using base::FilePath;
+using base::StringPrintf;
+
+KernelWarningCollector::KernelWarningCollector() {
+}
+
+KernelWarningCollector::~KernelWarningCollector() {
+}
+
+bool KernelWarningCollector::LoadKernelWarning(std::string *content,
+                                               std::string *signature) {
+  FilePath kernel_warning_path(kKernelWarningPath);
+  if (!base::ReadFileToString(kernel_warning_path, content)) {
+    LOG(ERROR) << "Could not open " << kKernelWarningPath;
+    return false;
+  }
+  // The signature is in the first line.
+  std::string::size_type end_position = content->find('\n');
+  if (end_position == std::string::npos) {
+    LOG(ERROR) << "unexpected kernel warning format";
+    return false;
+  }
+  *signature = content->substr(0, end_position);
+  return true;
+}
+
+bool KernelWarningCollector::Collect() {
+  std::string reason = "normal collection";
+  bool feedback = true;
+  if (IsDeveloperImage()) {
+    reason = "always collect from developer builds";
+    feedback = true;
+  } else if (!is_feedback_allowed_function_()) {
+    reason = "no user consent";
+    feedback = false;
+  }
+
+  LOG(INFO) << "Processing kernel warning: " << reason;
+
+  if (!feedback) {
+    return true;
+  }
+
+  std::string kernel_warning;
+  std::string warning_signature;
+  if (!LoadKernelWarning(&kernel_warning, &warning_signature)) {
+    return true;
+  }
+
+  FilePath root_crash_directory;
+  if (!GetCreatedCrashDirectoryByEuid(kRootUid, &root_crash_directory,
+                                      nullptr)) {
+    return true;
+  }
+
+  std::string dump_basename =
+      FormatDumpBasename(kExecName, time(nullptr), kKernelPid);
+  FilePath kernel_crash_path = root_crash_directory.Append(
+      StringPrintf("%s.kcrash", dump_basename.c_str()));
+
+  // We must use WriteNewFile instead of base::WriteFile as we
+  // do not want to write with root access to a symlink that an attacker
+  // might have created.
+  if (WriteNewFile(kernel_crash_path,
+                   kernel_warning.data(),
+                   kernel_warning.length()) !=
+      static_cast<int>(kernel_warning.length())) {
+    LOG(INFO) << "Failed to write kernel warning to "
+              << kernel_crash_path.value().c_str();
+    return true;
+  }
+
+  AddCrashMetaData(kKernelWarningSignatureKey, warning_signature);
+  WriteCrashMetaData(
+      root_crash_directory.Append(
+          StringPrintf("%s.meta", dump_basename.c_str())),
+    kExecName, kernel_crash_path.value());
+
+  LOG(INFO) << "Stored kernel warning into " << kernel_crash_path.value();
+  return true;
+}
diff --git a/crash_reporter/kernel_warning_collector.h b/crash_reporter/kernel_warning_collector.h
new file mode 100644
index 0000000..82c509c
--- /dev/null
+++ b/crash_reporter/kernel_warning_collector.h
@@ -0,0 +1,35 @@
+// Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CRASH_REPORTER_KERNEL_WARNING_COLLECTOR_H_
+#define CRASH_REPORTER_KERNEL_WARNING_COLLECTOR_H_
+
+#include <string>
+
+#include <base/macros.h>
+#include <gtest/gtest_prod.h>  // for FRIEND_TEST
+
+#include "crash_collector.h"
+
+// Kernel warning collector.
+class KernelWarningCollector : public CrashCollector {
+ public:
+  KernelWarningCollector();
+
+  ~KernelWarningCollector() override;
+
+  // Collects warning.
+  bool Collect();
+
+ private:
+  friend class KernelWarningCollectorTest;
+  FRIEND_TEST(KernelWarningCollectorTest, CollectOK);
+
+  // Reads the full content of the kernel warn dump and its signature.
+  bool LoadKernelWarning(std::string *content, std::string *signature);
+
+  DISALLOW_COPY_AND_ASSIGN(KernelWarningCollector);
+};
+
+#endif  // CRASH_REPORTER_KERNEL_WARNING_COLLECTOR_H_
diff --git a/crash_reporter/list_proxies.cc b/crash_reporter/list_proxies.cc
new file mode 100644
index 0000000..de6ef0a
--- /dev/null
+++ b/crash_reporter/list_proxies.cc
@@ -0,0 +1,291 @@
+// Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <sysexits.h>
+#include <unistd.h>  // for isatty()
+
+#include <string>
+#include <vector>
+
+#include <base/cancelable_callback.h>
+#include <base/command_line.h>
+#include <base/files/file_util.h>
+#include <base/memory/weak_ptr.h>
+#include <base/strings/string_number_conversions.h>
+#include <base/strings/string_tokenizer.h>
+#include <base/strings/string_util.h>
+#include <base/values.h>
+#include <chromeos/daemons/dbus_daemon.h>
+#include <chromeos/syslog_logging.h>
+
+#include "libcrosservice/dbus-proxies.h"
+
+using std::unique_ptr;
+
+namespace {
+
+const char kLibCrosProxyResolvedSignalInterface[] =
+    "org.chromium.CrashReporterLibcrosProxyResolvedInterface";
+const char kLibCrosProxyResolvedName[] = "ProxyResolved";
+const char kLibCrosServiceName[] = "org.chromium.LibCrosService";
+const char kNoProxy[] = "direct://";
+
+const int kTimeoutDefaultSeconds = 5;
+
+const char kHelp[] = "help";
+const char kQuiet[] = "quiet";
+const char kTimeout[] = "timeout";
+const char kVerbose[] = "verbose";
+// Help message to show when the --help command line switch is specified.
+const char kHelpMessage[] =
+    "Chromium OS Crash helper: proxy lister\n"
+    "\n"
+    "Available Switches:\n"
+    "  --quiet      Only print the proxies\n"
+    "  --verbose    Print additional messages even when not run from a TTY\n"
+    "  --timeout=N  Set timeout for browser resolving proxies (default is 5)\n"
+    "  --help       Show this help.\n";
+
+// Copied from src/update_engine/chrome_browser_proxy_resolver.cc
+// Parses the browser's answer for resolved proxies.  It returns a
+// list of strings, each of which is a resolved proxy.
+std::vector<std::string> ParseProxyString(const std::string& input) {
+  std::vector<std::string> ret;
+  // Some of this code taken from
+  // http://src.chromium.org/svn/trunk/src/net/proxy/proxy_server.cc and
+  // http://src.chromium.org/svn/trunk/src/net/proxy/proxy_list.cc
+  base::StringTokenizer entry_tok(input, ";");
+  while (entry_tok.GetNext()) {
+    std::string token = entry_tok.token();
+    base::TrimWhitespaceASCII(token, base::TRIM_ALL, &token);
+
+    // Start by finding the first space (if any).
+    std::string::iterator space;
+    for (space = token.begin(); space != token.end(); ++space) {
+      if (IsAsciiWhitespace(*space)) {
+        break;
+      }
+    }
+
+    std::string scheme = std::string(token.begin(), space);
+    base::StringToLowerASCII(&scheme);
+    // Chrome uses "socks" to mean socks4 and "proxy" to mean http.
+    if (scheme == "socks")
+      scheme += "4";
+    else if (scheme == "proxy")
+      scheme = "http";
+    else if (scheme != "https" &&
+             scheme != "socks4" &&
+             scheme != "socks5" &&
+             scheme != "direct")
+      continue;  // Invalid proxy scheme
+
+    std::string host_and_port = std::string(space, token.end());
+    base::TrimWhitespaceASCII(host_and_port, base::TRIM_ALL, &host_and_port);
+    if (scheme != "direct" && host_and_port.empty())
+      continue;  // Must supply host/port when non-direct proxy used.
+    ret.push_back(scheme + "://" + host_and_port);
+  }
+  if (ret.empty() || *ret.rbegin() != kNoProxy)
+    ret.push_back(kNoProxy);
+  return ret;
+}
+
+// A class for interfacing with Chrome to resolve proxies for a given source
+// url.  The class is initialized with the given source url to check, the
+// signal interface and name that Chrome will reply to, and how long to wait
+// for the resolve request to timeout.  Once initialized, the Run() function
+// must be called, which blocks on the D-Bus call to Chrome.  The call returns
+// after either the timeout or the proxy has been resolved.  The resolved
+// proxies can then be accessed through the proxies() function.
+class ProxyResolver : public chromeos::DBusDaemon {
+ public:
+  ProxyResolver(const std::string& source_url,
+                const std::string& signal_interface,
+                const std::string& signal_name,
+                base::TimeDelta timeout)
+      : source_url_(source_url),
+        signal_interface_(signal_interface),
+        signal_name_(signal_name),
+        timeout_(timeout),
+        weak_ptr_factory_(this),
+        timeout_callback_(base::Bind(&ProxyResolver::HandleBrowserTimeout,
+                                     weak_ptr_factory_.GetWeakPtr())) {}
+
+  ~ProxyResolver() override {}
+
+  const std::vector<std::string>& proxies() {
+    return proxies_;
+  }
+
+  int Run() override {
+    // Add task for if the browser proxy call times out.
+    base::MessageLoop::current()->PostDelayedTask(
+        FROM_HERE,
+        timeout_callback_.callback(),
+        timeout_);
+
+    return chromeos::DBusDaemon::Run();
+  }
+
+ protected:
+  // If the browser times out, quit the run loop.
+  void HandleBrowserTimeout() {
+    LOG(ERROR) << "Timeout while waiting for browser to resolve proxy";
+    Quit();
+  }
+
+  // If the signal handler connects successfully, call the browser's
+  // ResolveNetworkProxy D-Bus method.  Otherwise, don't do anything and let
+  // the timeout task quit the run loop.
+  void HandleDBusSignalConnected(const std::string& interface,
+                                 const std::string& signal,
+                                 bool success) {
+    if (!success) {
+      LOG(ERROR) << "Could not connect to signal " << interface << "."
+                 << signal;
+      timeout_callback_.Cancel();
+      Quit();
+      return;
+    }
+
+    chromeos::ErrorPtr error;
+    call_proxy_->ResolveNetworkProxy(source_url_,
+                                     signal_interface_,
+                                     signal_name_,
+                                     &error);
+
+    if (error) {
+      LOG(ERROR) << "Call to ResolveNetworkProxy failed: "
+                 << error->GetMessage();
+      timeout_callback_.Cancel();
+      Quit();
+    }
+  }
+
+  // Handle incoming ProxyResolved signal.
+  void HandleProxyResolvedSignal(const std::string& source_url,
+                                 const std::string& proxy_info,
+                                 const std::string& error_message) {
+    timeout_callback_.Cancel();
+    proxies_ = ParseProxyString(proxy_info);
+    LOG(INFO) << "Found proxies via browser signal: "
+              << JoinString(proxies_, 'x');
+
+    Quit();
+  }
+
+  int OnInit() override {
+    int return_code = chromeos::DBusDaemon::OnInit();
+    if (return_code != EX_OK)
+      return return_code;
+
+    // Initialize D-Bus proxies.
+    call_proxy_.reset(
+        new org::chromium::LibCrosServiceInterfaceProxy(bus_,
+                                                        kLibCrosServiceName));
+    signal_proxy_.reset(
+        new org::chromium::CrashReporterLibcrosProxyResolvedInterfaceProxy(
+            bus_,
+            kLibCrosServiceName));
+
+    // Set up the D-Bus signal handler.
+    // TODO(crbug.com/446115): Update ResolveNetworkProxy call to use an
+    //     asynchronous return value rather than a return signal.
+    signal_proxy_->RegisterProxyResolvedSignalHandler(
+        base::Bind(&ProxyResolver::HandleProxyResolvedSignal,
+                   weak_ptr_factory_.GetWeakPtr()),
+        base::Bind(&ProxyResolver::HandleDBusSignalConnected,
+                   weak_ptr_factory_.GetWeakPtr()));
+
+    return EX_OK;
+  }
+
+ private:
+  unique_ptr<org::chromium::LibCrosServiceInterfaceProxy> call_proxy_;
+  unique_ptr<org::chromium::CrashReporterLibcrosProxyResolvedInterfaceProxy>
+      signal_proxy_;
+
+  const std::string source_url_;
+  const std::string signal_interface_;
+  const std::string signal_name_;
+  base::TimeDelta timeout_;
+
+  std::vector<std::string> proxies_;
+  base::WeakPtrFactory<ProxyResolver> weak_ptr_factory_;
+
+  base::CancelableClosure timeout_callback_;
+
+  DISALLOW_COPY_AND_ASSIGN(ProxyResolver);
+};
+
+static bool ShowBrowserProxies(std::string url, base::TimeDelta timeout) {
+  // Initialize and run the proxy resolver to watch for signals.
+  ProxyResolver resolver(url,
+                         kLibCrosProxyResolvedSignalInterface,
+                         kLibCrosProxyResolvedName,
+                         timeout);
+  resolver.Run();
+
+  std::vector<std::string> proxies = resolver.proxies();
+
+  // If proxies is empty, then the timeout was reached waiting for the proxy
+  // resolved signal.  If no proxies are defined, proxies will be populated
+  // with "direct://".
+  if (proxies.empty())
+    return false;
+
+  for (const auto& proxy : proxies) {
+    printf("%s\n", proxy.c_str());
+  }
+  return true;
+}
+
+}  // namespace
+
+int main(int argc, char *argv[]) {
+  base::CommandLine::Init(argc, argv);
+  base::CommandLine* cl = base::CommandLine::ForCurrentProcess();
+
+  if (cl->HasSwitch(kHelp)) {
+    LOG(INFO) << kHelpMessage;
+    return 0;
+  }
+
+  bool quiet = cl->HasSwitch(kQuiet);
+  bool verbose = cl->HasSwitch(kVerbose);
+
+  int timeout = kTimeoutDefaultSeconds;
+  std::string str_timeout = cl->GetSwitchValueASCII(kTimeout);
+  if (!str_timeout.empty() && !base::StringToInt(str_timeout, &timeout)) {
+    LOG(ERROR) << "Invalid timeout value: " << str_timeout;
+    return 1;
+  }
+
+  // Default to logging to syslog.
+  int init_flags = chromeos::kLogToSyslog;
+  // Log to stderr if a TTY (and "-quiet" wasn't passed), or if "-verbose"
+  // was passed.
+
+  if ((!quiet && isatty(STDERR_FILENO)) || verbose)
+    init_flags |= chromeos::kLogToStderr;
+  chromeos::InitLog(init_flags);
+
+  std::string url;
+  base::CommandLine::StringVector urls = cl->GetArgs();
+  if (!urls.empty()) {
+    url = urls[0];
+    LOG(INFO) << "Resolving proxies for URL: " << url;
+  } else {
+    LOG(INFO) << "Resolving proxies without URL";
+  }
+
+  if (!ShowBrowserProxies(url, base::TimeDelta::FromSeconds(timeout))) {
+    LOG(ERROR) << "Error resolving proxies via the browser";
+    LOG(INFO) << "Assuming direct proxy";
+    printf("%s\n", kNoProxy);
+  }
+
+  return 0;
+}
diff --git a/crash_reporter/testrunner.cc b/crash_reporter/testrunner.cc
new file mode 100644
index 0000000..d45bbf8
--- /dev/null
+++ b/crash_reporter/testrunner.cc
@@ -0,0 +1,11 @@
+// Copyright 2015 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <chromeos/test_helpers.h>
+#include <gtest/gtest.h>
+
+int main(int argc, char** argv) {
+  SetUpTests(&argc, argv, true);
+  return RUN_ALL_TESTS();
+}
diff --git a/crash_reporter/udev_collector.cc b/crash_reporter/udev_collector.cc
new file mode 100644
index 0000000..85f40db
--- /dev/null
+++ b/crash_reporter/udev_collector.cc
@@ -0,0 +1,232 @@
+// Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "udev_collector.h"
+
+#include <map>
+#include <utility>
+#include <vector>
+
+#include <base/files/file_enumerator.h>
+#include <base/files/file_util.h>
+#include <base/logging.h>
+#include <base/strings/string_number_conversions.h>
+#include <base/strings/string_split.h>
+#include <base/strings/string_util.h>
+#include <base/strings/stringprintf.h>
+#include <chromeos/process.h>
+
+using base::FilePath;
+
+namespace {
+
+const char kCollectUdevSignature[] = "crash_reporter-udev-collection";
+const char kGzipPath[] = "/bin/gzip";
+const char kUdevExecName[] = "udev";
+const char kUdevSignatureKey[] = "sig";
+const char kUdevSubsystemDevCoredump[] = "devcoredump";
+const char kDefaultDevCoredumpDirectory[] = "/sys/class/devcoredump";
+const char kDevCoredumpFilePrefixFormat[] = "devcoredump_%s";
+
+}  // namespace
+
+UdevCollector::UdevCollector()
+    : dev_coredump_directory_(kDefaultDevCoredumpDirectory) {}
+
+UdevCollector::~UdevCollector() {}
+
+bool UdevCollector::HandleCrash(const std::string &udev_event) {
+  if (IsDeveloperImage()) {
+    LOG(INFO) << "developer image - collect udev crash info.";
+  } else if (is_feedback_allowed_function_()) {
+    LOG(INFO) << "Consent given - collect udev crash info.";
+  } else {
+    LOG(INFO) << "Ignoring - Non-developer image and no consent given.";
+    return false;
+  }
+
+  // Process the udev event string.
+  // First get all the key-value pairs.
+  std::vector<std::pair<std::string, std::string>> udev_event_keyval;
+  base::SplitStringIntoKeyValuePairs(udev_event, '=', ':', &udev_event_keyval);
+  std::vector<std::pair<std::string, std::string>>::const_iterator iter;
+  std::map<std::string, std::string> udev_event_map;
+  for (iter = udev_event_keyval.begin();
+       iter != udev_event_keyval.end();
+       ++iter) {
+    udev_event_map[iter->first] = iter->second;
+  }
+
+  // Make sure the crash directory exists, or create it if it doesn't.
+  FilePath crash_directory;
+  if (!GetCreatedCrashDirectoryByEuid(0, &crash_directory, nullptr)) {
+    LOG(ERROR) << "Could not get crash directory.";
+    return false;
+  }
+
+  if (udev_event_map["SUBSYSTEM"] == kUdevSubsystemDevCoredump) {
+    int instance_number;
+    if (!base::StringToInt(udev_event_map["KERNEL_NUMBER"], &instance_number)) {
+      LOG(ERROR) << "Invalid kernel number: "
+                 << udev_event_map["KERNEL_NUMBER"];
+      return false;
+    }
+    return ProcessDevCoredump(crash_directory, instance_number);
+  }
+
+  return ProcessUdevCrashLogs(crash_directory,
+                              udev_event_map["ACTION"],
+                              udev_event_map["KERNEL"],
+                              udev_event_map["SUBSYSTEM"]);
+}
+
+bool UdevCollector::ProcessUdevCrashLogs(const FilePath& crash_directory,
+                                         const std::string& action,
+                                         const std::string& kernel,
+                                         const std::string& subsystem) {
+  // Construct the basename string for crash_reporter_logs.conf:
+  //   "crash_reporter-udev-collection-[action]-[name]-[subsystem]"
+  // If a udev field is not provided, "" is used in its place, e.g.:
+  //   "crash_reporter-udev-collection-[action]--[subsystem]"
+  // Hence, "" is used as a wildcard name string.
+  // TODO(sque, crosbug.com/32238): Implement wildcard checking.
+  std::string basename = action + "-" + kernel + "-" + subsystem;
+  std::string udev_log_name = std::string(kCollectUdevSignature) + '-' +
+                              basename;
+
+  // Create the destination path.
+  std::string log_file_name =
+      FormatDumpBasename(basename, time(nullptr), 0);
+  FilePath crash_path = GetCrashPath(crash_directory, log_file_name, "log");
+
+  // Handle the crash.
+  bool result = GetLogContents(log_config_path_, udev_log_name, crash_path);
+  if (!result) {
+    LOG(ERROR) << "Error reading udev log info " << udev_log_name;
+    return false;
+  }
+
+  // Compress the output using gzip.
+  chromeos::ProcessImpl gzip_process;
+  gzip_process.AddArg(kGzipPath);
+  gzip_process.AddArg(crash_path.value());
+  int process_result = gzip_process.Run();
+  FilePath crash_path_zipped = FilePath(crash_path.value() + ".gz");
+  // If the zip file was not created, use the uncompressed file.
+  if (process_result != 0 || !base::PathExists(crash_path_zipped))
+    LOG(ERROR) << "Could not create zip file " << crash_path_zipped.value();
+  else
+    crash_path = crash_path_zipped;
+
+  std::string exec_name = std::string(kUdevExecName) + "-" + subsystem;
+  AddCrashMetaData(kUdevSignatureKey, udev_log_name);
+  WriteCrashMetaData(GetCrashPath(crash_directory, log_file_name, "meta"),
+                     exec_name, crash_path.value());
+  return true;
+}
+
+bool UdevCollector::ProcessDevCoredump(const FilePath& crash_directory,
+                                       int instance_number) {
+  FilePath coredump_path =
+      FilePath(base::StringPrintf("%s/devcd%d/data",
+                                  dev_coredump_directory_.c_str(),
+                                  instance_number));
+  if (!base::PathExists(coredump_path)) {
+    LOG(ERROR) << "Device coredump file " << coredump_path.value()
+               << " does not exist";
+    return false;
+  }
+
+  // Add coredump file to the crash directory.
+  if (!AppendDevCoredump(crash_directory, coredump_path, instance_number)) {
+    ClearDevCoredump(coredump_path);
+    return false;
+  }
+
+  // Clear the coredump data to allow generation of future device coredumps
+  // without having to wait for the 5-minutes timeout.
+  return ClearDevCoredump(coredump_path);
+}
+
+bool UdevCollector::AppendDevCoredump(const FilePath& crash_directory,
+                                      const FilePath& coredump_path,
+                                      int instance_number) {
+  // Retrieve the driver name of the failing device.
+  std::string driver_name = GetFailingDeviceDriverName(instance_number);
+  if (driver_name.empty()) {
+    LOG(ERROR) << "Failed to obtain driver name for instance: "
+               << instance_number;
+    return false;
+  }
+
+  std::string coredump_prefix =
+      base::StringPrintf(kDevCoredumpFilePrefixFormat, driver_name.c_str());
+
+  std::string dump_basename = FormatDumpBasename(coredump_prefix,
+                                                 time(nullptr),
+                                                 instance_number);
+  FilePath core_path = GetCrashPath(crash_directory, dump_basename, "devcore");
+  FilePath log_path = GetCrashPath(crash_directory, dump_basename, "log");
+  FilePath meta_path = GetCrashPath(crash_directory, dump_basename, "meta");
+
+  // Collect coredump data.
+  if (!base::CopyFile(coredump_path, core_path)) {
+    LOG(ERROR) << "Failed to copy device coredumpm file from "
+               << coredump_path.value() << " to " << core_path.value();
+    return false;
+  }
+
+  // Collect additional logs if one is specified in the config file.
+  std::string udev_log_name = std::string(kCollectUdevSignature) + '-' +
+      kUdevSubsystemDevCoredump + '-' + driver_name;
+  bool result = GetLogContents(log_config_path_, udev_log_name, log_path);
+  if (result) {
+    AddCrashMetaUploadFile("logs", log_path.value());
+  }
+
+  WriteCrashMetaData(meta_path, coredump_prefix, core_path.value());
+
+  return true;
+}
+
+bool UdevCollector::ClearDevCoredump(const FilePath& coredump_path) {
+  if (!base::WriteFile(coredump_path, "0", 1)) {
+    LOG(ERROR) << "Failed to delete the coredump data file "
+               << coredump_path.value();
+    return false;
+  }
+  return true;
+}
+
+std::string UdevCollector::GetFailingDeviceDriverName(int instance_number) {
+  FilePath failing_uevent_path =
+      FilePath(base::StringPrintf("%s/devcd%d/failing_device/uevent",
+                                  dev_coredump_directory_.c_str(),
+                                  instance_number));
+  if (!base::PathExists(failing_uevent_path)) {
+    LOG(ERROR) << "Failing uevent path " << failing_uevent_path.value()
+               << " does not exist";
+    return "";
+  }
+
+  std::string uevent_content;
+  if (!base::ReadFileToString(failing_uevent_path, &uevent_content)) {
+    LOG(ERROR) << "Failed to read uevent file " << failing_uevent_path.value();
+    return "";
+  }
+
+  // Parse uevent file contents as key-value pairs.
+  std::vector<std::pair<std::string, std::string>> uevent_keyval;
+  base::SplitStringIntoKeyValuePairs(uevent_content, '=', '\n', &uevent_keyval);
+  std::vector<std::pair<std::string, std::string>>::const_iterator iter;
+  for (iter = uevent_keyval.begin();
+       iter != uevent_keyval.end();
+       ++iter) {
+    if (iter->first == "DRIVER") {
+      return iter->second;
+    }
+  }
+
+  return "";
+}
diff --git a/crash_reporter/udev_collector.h b/crash_reporter/udev_collector.h
new file mode 100644
index 0000000..d9b37eb
--- /dev/null
+++ b/crash_reporter/udev_collector.h
@@ -0,0 +1,64 @@
+// Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CRASH_REPORTER_UDEV_COLLECTOR_H_
+#define CRASH_REPORTER_UDEV_COLLECTOR_H_
+
+#include <string>
+
+#include <base/files/file_path.h>
+#include <base/macros.h>
+#include <gtest/gtest_prod.h>  // for FRIEND_TEST
+
+#include "crash_collector.h"
+
+// Udev crash collector.
+class UdevCollector : public CrashCollector {
+ public:
+  UdevCollector();
+
+  ~UdevCollector() override;
+
+  // The udev event string should be formatted as follows:
+  //   "ACTION=[action]:KERNEL=[name]:SUBSYSTEM=[subsystem]"
+  // The values don't have to be in any particular order. One or more of them
+  // could be omitted, in which case it would be treated as a wildcard (*).
+  bool HandleCrash(const std::string& udev_event);
+
+ protected:
+  std::string dev_coredump_directory_;
+
+ private:
+  friend class UdevCollectorTest;
+
+  // Process udev crash logs, collecting log files according to the config
+  // file (crash_reporter_logs.conf).
+  bool ProcessUdevCrashLogs(const base::FilePath& crash_directory,
+                            const std::string& action,
+                            const std::string& kernel,
+                            const std::string& subsystem);
+  // Process device coredump, collecting device coredump file.
+  // |instance_number| is the kernel number of the virtual device for the device
+  // coredump instance.
+  bool ProcessDevCoredump(const base::FilePath& crash_directory,
+                          int instance_number);
+  // Copy device coredump file to crash directory, and perform necessary
+  // coredump file management.
+  bool AppendDevCoredump(const base::FilePath& crash_directory,
+                         const base::FilePath& coredump_path,
+                         int instance_number);
+  // Clear the device coredump file by performing a dummy write to it.
+  bool ClearDevCoredump(const base::FilePath& coredump_path);
+  // Return the driver name of the device that generates the coredump.
+  std::string GetFailingDeviceDriverName(int instance_number);
+
+  // Mutator for unit testing.
+  void set_log_config_path(const std::string& path) {
+    log_config_path_ = base::FilePath(path);
+  }
+
+  DISALLOW_COPY_AND_ASSIGN(UdevCollector);
+};
+
+#endif  // CRASH_REPORTER_UDEV_COLLECTOR_H_
diff --git a/crash_reporter/udev_collector_test.cc b/crash_reporter/udev_collector_test.cc
new file mode 100644
index 0000000..4897b91
--- /dev/null
+++ b/crash_reporter/udev_collector_test.cc
@@ -0,0 +1,171 @@
+// Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <base/files/file_enumerator.h>
+#include <base/files/file_util.h>
+#include <base/files/scoped_temp_dir.h>
+#include <base/strings/stringprintf.h>
+#include <chromeos/syslog_logging.h>
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+
+#include "udev_collector.h"
+
+using base::FilePath;
+
+namespace {
+
+// Dummy log config file name.
+const char kLogConfigFileName[] = "log_config_file";
+
+// Dummy directory for storing device coredumps.
+const char kDevCoredumpDirectory[] = "devcoredump";
+
+// A bunch of random rules to put into the dummy log config file.
+const char kLogConfigFileContents[] =
+    "crash_reporter-udev-collection-change-card0-drm=echo change card0 drm\n"
+    "crash_reporter-udev-collection-add-state0-cpu=echo change state0 cpu\n"
+    "crash_reporter-udev-collection-devcoredump-iwlwifi=echo devcoredump\n"
+    "cros_installer=echo not for udev";
+
+const char kCrashLogFilePattern[] = "*.log.gz";
+const char kDevCoredumpFilePattern[] = "*.devcore";
+
+// Dummy content for device coredump data file.
+const char kDevCoredumpDataContents[] = "coredump";
+
+// Content for failing device's uevent file.
+const char kFailingDeviceUeventContents[] = "DRIVER=iwlwifi\n";
+
+void CountCrash() {}
+
+bool s_consent_given = true;
+
+bool IsMetrics() {
+  return s_consent_given;
+}
+
+// Returns the number of files found in the given path that matches the
+// specified file name pattern.
+int GetNumFiles(const FilePath& path, const std::string& file_pattern) {
+  base::FileEnumerator enumerator(path, false, base::FileEnumerator::FILES,
+                                  file_pattern);
+  int num_files = 0;
+  for (FilePath file_path = enumerator.Next();
+       !file_path.value().empty();
+       file_path = enumerator.Next()) {
+    num_files++;
+  }
+  return num_files;
+}
+
+}  // namespace
+
+class UdevCollectorMock : public UdevCollector {
+ public:
+  MOCK_METHOD0(SetUpDBus, void());
+};
+
+class UdevCollectorTest : public ::testing::Test {
+ protected:
+  base::ScopedTempDir temp_dir_generator_;
+
+  void HandleCrash(const std::string &udev_event) {
+    collector_.HandleCrash(udev_event);
+  }
+
+  void GenerateDevCoredump(const std::string& device_name) {
+    // Generate coredump data file.
+    ASSERT_TRUE(CreateDirectory(
+        FilePath(base::StringPrintf("%s/%s",
+                                    collector_.dev_coredump_directory_.c_str(),
+                                    device_name.c_str()))));
+    FilePath data_path =
+        FilePath(base::StringPrintf("%s/%s/data",
+                                    collector_.dev_coredump_directory_.c_str(),
+                                    device_name.c_str()));
+    ASSERT_EQ(strlen(kDevCoredumpDataContents),
+              base::WriteFile(data_path,
+                              kDevCoredumpDataContents,
+                              strlen(kDevCoredumpDataContents)));
+    // Generate uevent file for failing device.
+    ASSERT_TRUE(CreateDirectory(
+        FilePath(base::StringPrintf("%s/%s/failing_device",
+                                    collector_.dev_coredump_directory_.c_str(),
+                                    device_name.c_str()))));
+    FilePath uevent_path =
+        FilePath(base::StringPrintf("%s/%s/failing_device/uevent",
+                                    collector_.dev_coredump_directory_.c_str(),
+                                    device_name.c_str()));
+    ASSERT_EQ(strlen(kFailingDeviceUeventContents),
+              base::WriteFile(uevent_path,
+                              kFailingDeviceUeventContents,
+                              strlen(kFailingDeviceUeventContents)));
+  }
+
+ private:
+  void SetUp() override {
+    s_consent_given = true;
+
+    EXPECT_CALL(collector_, SetUpDBus()).WillRepeatedly(testing::Return());
+
+    collector_.Initialize(CountCrash, IsMetrics);
+
+    ASSERT_TRUE(temp_dir_generator_.CreateUniqueTempDir());
+
+    FilePath log_config_path =
+        temp_dir_generator_.path().Append(kLogConfigFileName);
+    collector_.log_config_path_ = log_config_path;
+    collector_.ForceCrashDirectory(temp_dir_generator_.path());
+
+    FilePath dev_coredump_path =
+        temp_dir_generator_.path().Append(kDevCoredumpDirectory);
+    collector_.dev_coredump_directory_ = dev_coredump_path.value();
+
+    // Write to a dummy log config file.
+    ASSERT_EQ(strlen(kLogConfigFileContents),
+              base::WriteFile(log_config_path,
+                              kLogConfigFileContents,
+                              strlen(kLogConfigFileContents)));
+
+    chromeos::ClearLog();
+  }
+
+  UdevCollectorMock collector_;
+};
+
+TEST_F(UdevCollectorTest, TestNoConsent) {
+  s_consent_given = false;
+  HandleCrash("ACTION=change:KERNEL=card0:SUBSYSTEM=drm");
+  EXPECT_EQ(0, GetNumFiles(temp_dir_generator_.path(), kCrashLogFilePattern));
+}
+
+TEST_F(UdevCollectorTest, TestNoMatch) {
+  // No rule should match this.
+  HandleCrash("ACTION=change:KERNEL=foo:SUBSYSTEM=bar");
+  EXPECT_EQ(0, GetNumFiles(temp_dir_generator_.path(), kCrashLogFilePattern));
+}
+
+TEST_F(UdevCollectorTest, TestMatches) {
+  // Try multiple udev events in sequence.  The number of log files generated
+  // should increase.
+  HandleCrash("ACTION=change:KERNEL=card0:SUBSYSTEM=drm");
+  EXPECT_EQ(1, GetNumFiles(temp_dir_generator_.path(), kCrashLogFilePattern));
+  HandleCrash("ACTION=add:KERNEL=state0:SUBSYSTEM=cpu");
+  EXPECT_EQ(2, GetNumFiles(temp_dir_generator_.path(), kCrashLogFilePattern));
+}
+
+TEST_F(UdevCollectorTest, TestDevCoredump) {
+  GenerateDevCoredump("devcd0");
+  HandleCrash("ACTION=add:KERNEL_NUMBER=0:SUBSYSTEM=devcoredump");
+  EXPECT_EQ(1, GetNumFiles(temp_dir_generator_.path(),
+                           kDevCoredumpFilePattern));
+  GenerateDevCoredump("devcd1");
+  HandleCrash("ACTION=add:KERNEL_NUMBER=1:SUBSYSTEM=devcoredump");
+  EXPECT_EQ(2, GetNumFiles(temp_dir_generator_.path(),
+                           kDevCoredumpFilePattern));
+}
+
+// TODO(sque, crosbug.com/32238) - test wildcard cases, multiple identical udev
+// events.
diff --git a/crash_reporter/unclean_shutdown_collector.cc b/crash_reporter/unclean_shutdown_collector.cc
new file mode 100644
index 0000000..a6da1bb
--- /dev/null
+++ b/crash_reporter/unclean_shutdown_collector.cc
@@ -0,0 +1,81 @@
+// Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "unclean_shutdown_collector.h"
+
+#include <base/files/file_util.h>
+#include <base/logging.h>
+
+static const char kUncleanShutdownFile[] =
+    "/var/lib/crash_reporter/pending_clean_shutdown";
+
+// Files created by power manager used for crash reporting.
+static const char kPowerdTracePath[] = "/var/lib/power_manager";
+// Presence of this file indicates that the system was suspended
+static const char kPowerdSuspended[] = "powerd_suspended";
+
+using base::FilePath;
+
+UncleanShutdownCollector::UncleanShutdownCollector()
+    : unclean_shutdown_file_(kUncleanShutdownFile),
+      powerd_trace_path_(kPowerdTracePath),
+      powerd_suspended_file_(powerd_trace_path_.Append(kPowerdSuspended)) {
+}
+
+UncleanShutdownCollector::~UncleanShutdownCollector() {
+}
+
+bool UncleanShutdownCollector::Enable() {
+  FilePath file_path(unclean_shutdown_file_);
+  base::CreateDirectory(file_path.DirName());
+  if (base::WriteFile(file_path, "", 0) != 0) {
+    LOG(ERROR) << "Unable to create shutdown check file";
+    return false;
+  }
+  return true;
+}
+
+bool UncleanShutdownCollector::DeleteUncleanShutdownFiles() {
+  if (!base::DeleteFile(FilePath(unclean_shutdown_file_), false)) {
+    LOG(ERROR) << "Failed to delete unclean shutdown file "
+               << unclean_shutdown_file_;
+    return false;
+  }
+  // Delete power manager state file if it exists.
+  base::DeleteFile(powerd_suspended_file_, false);
+  return true;
+}
+
+bool UncleanShutdownCollector::Collect() {
+  FilePath unclean_file_path(unclean_shutdown_file_);
+  if (!base::PathExists(unclean_file_path)) {
+    return false;
+  }
+  LOG(WARNING) << "Last shutdown was not clean";
+  if (DeadBatteryCausedUncleanShutdown()) {
+    DeleteUncleanShutdownFiles();
+    return false;
+  }
+  DeleteUncleanShutdownFiles();
+
+  if (is_feedback_allowed_function_()) {
+    count_crash_function_();
+  }
+  return true;
+}
+
+bool UncleanShutdownCollector::Disable() {
+  LOG(INFO) << "Clean shutdown signalled";
+  return DeleteUncleanShutdownFiles();
+}
+
+bool UncleanShutdownCollector::DeadBatteryCausedUncleanShutdown() {
+  // Check for case of battery running out while suspended.
+  if (base::PathExists(powerd_suspended_file_)) {
+    LOG(INFO) << "Unclean shutdown occurred while suspended. Not counting "
+              << "toward unclean shutdown statistic.";
+    return true;
+  }
+  return false;
+}
diff --git a/crash_reporter/unclean_shutdown_collector.h b/crash_reporter/unclean_shutdown_collector.h
new file mode 100644
index 0000000..2ce0842
--- /dev/null
+++ b/crash_reporter/unclean_shutdown_collector.h
@@ -0,0 +1,50 @@
+// Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CRASH_REPORTER_UNCLEAN_SHUTDOWN_COLLECTOR_H_
+#define CRASH_REPORTER_UNCLEAN_SHUTDOWN_COLLECTOR_H_
+
+#include <string>
+
+#include <base/files/file_path.h>
+#include <base/macros.h>
+#include <gtest/gtest_prod.h>  // for FRIEND_TEST
+
+#include "crash_collector.h"
+
+// Unclean shutdown collector.
+class UncleanShutdownCollector : public CrashCollector {
+ public:
+  UncleanShutdownCollector();
+  ~UncleanShutdownCollector() override;
+
+  // Enable collection - signal that a boot has started.
+  bool Enable();
+
+  // Collect if there is was an unclean shutdown. Returns true if
+  // there was, false otherwise.
+  bool Collect();
+
+  // Disable collection - signal that the system has been shutdown cleanly.
+  bool Disable();
+
+ private:
+  friend class UncleanShutdownCollectorTest;
+  FRIEND_TEST(UncleanShutdownCollectorTest, EnableCannotWrite);
+  FRIEND_TEST(UncleanShutdownCollectorTest, CollectDeadBatterySuspended);
+
+  bool DeleteUncleanShutdownFiles();
+
+  // Check for unclean shutdown due to battery running out by analyzing powerd
+  // trace files.
+  bool DeadBatteryCausedUncleanShutdown();
+
+  const char *unclean_shutdown_file_;
+  base::FilePath powerd_trace_path_;
+  base::FilePath powerd_suspended_file_;
+
+  DISALLOW_COPY_AND_ASSIGN(UncleanShutdownCollector);
+};
+
+#endif  // CRASH_REPORTER_UNCLEAN_SHUTDOWN_COLLECTOR_H_
diff --git a/crash_reporter/unclean_shutdown_collector_test.cc b/crash_reporter/unclean_shutdown_collector_test.cc
new file mode 100644
index 0000000..dc420fb
--- /dev/null
+++ b/crash_reporter/unclean_shutdown_collector_test.cc
@@ -0,0 +1,135 @@
+// Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "unclean_shutdown_collector.h"
+
+#include <unistd.h>
+
+#include <base/files/file_util.h>
+#include <base/strings/string_util.h>
+#include <chromeos/syslog_logging.h>
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+
+using base::FilePath;
+using ::chromeos::FindLog;
+
+namespace {
+
+int s_crashes = 0;
+bool s_metrics = true;
+
+const char kTestDirectory[] = "test";
+const char kTestSuspended[] = "test/suspended";
+const char kTestUnclean[] = "test/unclean";
+
+void CountCrash() {
+  ++s_crashes;
+}
+
+bool IsMetrics() {
+  return s_metrics;
+}
+
+}  // namespace
+
+class UncleanShutdownCollectorMock : public UncleanShutdownCollector {
+ public:
+  MOCK_METHOD0(SetUpDBus, void());
+};
+
+class UncleanShutdownCollectorTest : public ::testing::Test {
+  void SetUp() {
+    s_crashes = 0;
+
+    EXPECT_CALL(collector_, SetUpDBus()).WillRepeatedly(testing::Return());
+
+    collector_.Initialize(CountCrash,
+                          IsMetrics);
+    rmdir(kTestDirectory);
+    test_unclean_ = FilePath(kTestUnclean);
+    collector_.unclean_shutdown_file_ = kTestUnclean;
+    base::DeleteFile(test_unclean_, true);
+    // Set up an alternate power manager state file as well
+    collector_.powerd_suspended_file_ = FilePath(kTestSuspended);
+    chromeos::ClearLog();
+  }
+
+ protected:
+  void WriteStringToFile(const FilePath &file_path,
+                         const char *data) {
+    ASSERT_EQ(strlen(data), base::WriteFile(file_path, data, strlen(data)));
+  }
+
+  UncleanShutdownCollectorMock collector_;
+  FilePath test_unclean_;
+};
+
+TEST_F(UncleanShutdownCollectorTest, EnableWithoutParent) {
+  ASSERT_TRUE(collector_.Enable());
+  ASSERT_TRUE(base::PathExists(test_unclean_));
+}
+
+TEST_F(UncleanShutdownCollectorTest, EnableWithParent) {
+  mkdir(kTestDirectory, 0777);
+  ASSERT_TRUE(collector_.Enable());
+  ASSERT_TRUE(base::PathExists(test_unclean_));
+}
+
+TEST_F(UncleanShutdownCollectorTest, EnableCannotWrite) {
+  collector_.unclean_shutdown_file_ = "/bad/path";
+  ASSERT_FALSE(collector_.Enable());
+  ASSERT_TRUE(FindLog("Unable to create shutdown check file"));
+}
+
+TEST_F(UncleanShutdownCollectorTest, CollectTrue) {
+  ASSERT_TRUE(collector_.Enable());
+  ASSERT_TRUE(base::PathExists(test_unclean_));
+  ASSERT_TRUE(collector_.Collect());
+  ASSERT_FALSE(base::PathExists(test_unclean_));
+  ASSERT_EQ(1, s_crashes);
+  ASSERT_TRUE(FindLog("Last shutdown was not clean"));
+}
+
+TEST_F(UncleanShutdownCollectorTest, CollectFalse) {
+  ASSERT_FALSE(collector_.Collect());
+  ASSERT_EQ(0, s_crashes);
+}
+
+TEST_F(UncleanShutdownCollectorTest, CollectDeadBatterySuspended) {
+  ASSERT_TRUE(collector_.Enable());
+  ASSERT_TRUE(base::PathExists(test_unclean_));
+  base::WriteFile(collector_.powerd_suspended_file_, "", 0);
+  ASSERT_FALSE(collector_.Collect());
+  ASSERT_FALSE(base::PathExists(test_unclean_));
+  ASSERT_FALSE(base::PathExists(collector_.powerd_suspended_file_));
+  ASSERT_EQ(0, s_crashes);
+  ASSERT_TRUE(FindLog("Unclean shutdown occurred while suspended."));
+}
+
+TEST_F(UncleanShutdownCollectorTest, Disable) {
+  ASSERT_TRUE(collector_.Enable());
+  ASSERT_TRUE(base::PathExists(test_unclean_));
+  ASSERT_TRUE(collector_.Disable());
+  ASSERT_FALSE(base::PathExists(test_unclean_));
+  ASSERT_FALSE(collector_.Collect());
+}
+
+TEST_F(UncleanShutdownCollectorTest, DisableWhenNotEnabled) {
+  ASSERT_TRUE(collector_.Disable());
+}
+
+TEST_F(UncleanShutdownCollectorTest, CantDisable) {
+  mkdir(kTestDirectory, 0700);
+  if (mkdir(kTestUnclean, 0700)) {
+    ASSERT_EQ(EEXIST, errno)
+        << "Error while creating directory '" << kTestUnclean
+        << "': " << strerror(errno);
+  }
+  ASSERT_EQ(0, base::WriteFile(test_unclean_.Append("foo"), "", 0))
+      << "Error while creating empty file '"
+      << test_unclean_.Append("foo").value() << "': " << strerror(errno);
+  ASSERT_FALSE(collector_.Disable());
+  rmdir(kTestUnclean);
+}
diff --git a/crash_reporter/user_collector.cc b/crash_reporter/user_collector.cc
new file mode 100644
index 0000000..069b581
--- /dev/null
+++ b/crash_reporter/user_collector.cc
@@ -0,0 +1,579 @@
+// Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "user_collector.h"
+
+#include <elf.h>
+#include <fcntl.h>
+#include <grp.h>  // For struct group.
+#include <pcrecpp.h>
+#include <pwd.h>  // For struct passwd.
+#include <stdint.h>
+#include <sys/cdefs.h>  // For __WORDSIZE
+#include <sys/types.h>  // For getpwuid_r, getgrnam_r, WEXITSTATUS.
+
+#include <string>
+#include <vector>
+
+#include <base/files/file_util.h>
+#include <base/logging.h>
+#include <base/posix/eintr_wrapper.h>
+#include <base/strings/string_split.h>
+#include <base/strings/string_util.h>
+#include <base/strings/stringprintf.h>
+#include <chromeos/process.h>
+#include <chromeos/syslog_logging.h>
+
+static const char kCollectionErrorSignature[] =
+    "crash_reporter-user-collection";
+// This procfs file is used to cause kernel core file writing to
+// instead pipe the core file into a user space process.  See
+// core(5) man page.
+static const char kCorePatternFile[] = "/proc/sys/kernel/core_pattern";
+static const char kCorePipeLimitFile[] = "/proc/sys/kernel/core_pipe_limit";
+// Set core_pipe_limit to 4 so that we can catch a few unrelated concurrent
+// crashes, but finite to avoid infinitely recursing on crash handling.
+static const char kCorePipeLimit[] = "4";
+static const char kCoreToMinidumpConverterPath[] = "/usr/bin/core2md";
+
+static const char kStatePrefix[] = "State:\t";
+
+// Define an otherwise invalid value that represents an unknown UID.
+static const uid_t kUnknownUid = -1;
+
+const char *UserCollector::kUserId = "Uid:\t";
+const char *UserCollector::kGroupId = "Gid:\t";
+
+using base::FilePath;
+using base::StringPrintf;
+
+UserCollector::UserCollector()
+    : generate_diagnostics_(false),
+      core_pattern_file_(kCorePatternFile),
+      core_pipe_limit_file_(kCorePipeLimitFile),
+      initialized_(false) {
+}
+
+void UserCollector::Initialize(
+    UserCollector::CountCrashFunction count_crash_function,
+    const std::string &our_path,
+    UserCollector::IsFeedbackAllowedFunction is_feedback_allowed_function,
+    bool generate_diagnostics,
+    bool core2md_failure,
+    bool directory_failure,
+    const std::string &filter_in) {
+  CrashCollector::Initialize(count_crash_function,
+                             is_feedback_allowed_function);
+  our_path_ = our_path;
+  initialized_ = true;
+  generate_diagnostics_ = generate_diagnostics;
+  core2md_failure_ = core2md_failure;
+  directory_failure_ = directory_failure;
+  filter_in_ = filter_in;
+}
+
+UserCollector::~UserCollector() {
+}
+
+std::string UserCollector::GetErrorTypeSignature(ErrorType error_type) const {
+  switch (error_type) {
+    case kErrorSystemIssue:
+      return "system-issue";
+    case kErrorReadCoreData:
+      return "read-core-data";
+    case kErrorUnusableProcFiles:
+      return "unusable-proc-files";
+    case kErrorInvalidCoreFile:
+      return "invalid-core-file";
+    case kErrorUnsupported32BitCoreFile:
+      return "unsupported-32bit-core-file";
+    case kErrorCore2MinidumpConversion:
+      return "core2md-conversion";
+    default:
+      return "";
+  }
+}
+
+// Return the string that should be used for the kernel's core_pattern file.
+// Note that if you change the format of the enabled pattern, you'll probably
+// also need to change the ParseCrashAttributes() function below, the
+// user_collector_test.cc unittest, and the logging_UserCrash.py autotest.
+std::string UserCollector::GetPattern(bool enabled) const {
+  if (enabled) {
+    // Combine the four crash attributes into one parameter to try to reduce
+    // the size of the invocation line for crash_reporter, since the kernel
+    // has a fixed-sized (128B) buffer for it (before parameter expansion).
+    // Note that the kernel does not support quoted arguments in core_pattern.
+    return StringPrintf("|%s --user=%%P:%%s:%%u:%%e", our_path_.c_str());
+  } else {
+    return "core";
+  }
+}
+
+bool UserCollector::SetUpInternal(bool enabled) {
+  CHECK(initialized_);
+  LOG(INFO) << (enabled ? "Enabling" : "Disabling") << " user crash handling";
+
+  if (base::WriteFile(FilePath(core_pipe_limit_file_), kCorePipeLimit,
+                      strlen(kCorePipeLimit)) !=
+      static_cast<int>(strlen(kCorePipeLimit))) {
+    PLOG(ERROR) << "Unable to write " << core_pipe_limit_file_;
+    return false;
+  }
+  std::string pattern = GetPattern(enabled);
+  if (base::WriteFile(FilePath(core_pattern_file_), pattern.c_str(),
+                      pattern.length()) != static_cast<int>(pattern.length())) {
+    PLOG(ERROR) << "Unable to write " << core_pattern_file_;
+    return false;
+  }
+  return true;
+}
+
+bool UserCollector::GetFirstLineWithPrefix(
+    const std::vector<std::string> &lines,
+    const char *prefix, std::string *line) {
+  std::vector<std::string>::const_iterator line_iterator;
+  for (line_iterator = lines.begin(); line_iterator != lines.end();
+       ++line_iterator) {
+    if (line_iterator->find(prefix) == 0) {
+      *line = *line_iterator;
+      return true;
+    }
+  }
+  return false;
+}
+
+bool UserCollector::GetIdFromStatus(
+    const char *prefix, IdKind kind,
+    const std::vector<std::string> &status_lines, int *id) {
+  // From fs/proc/array.c:task_state(), this file contains:
+  // \nUid:\t<uid>\t<euid>\t<suid>\t<fsuid>\n
+  std::string id_line;
+  if (!GetFirstLineWithPrefix(status_lines, prefix, &id_line)) {
+    return false;
+  }
+  std::string id_substring = id_line.substr(strlen(prefix), std::string::npos);
+  std::vector<std::string> ids;
+  base::SplitString(id_substring, '\t', &ids);
+  if (ids.size() != kIdMax || kind < 0 || kind >= kIdMax) {
+    return false;
+  }
+  const char *number = ids[kind].c_str();
+  char *end_number = nullptr;
+  *id = strtol(number, &end_number, 10);
+  if (*end_number != '\0') {
+    return false;
+  }
+  return true;
+}
+
+bool UserCollector::GetStateFromStatus(
+    const std::vector<std::string> &status_lines, std::string *state) {
+  std::string state_line;
+  if (!GetFirstLineWithPrefix(status_lines, kStatePrefix, &state_line)) {
+    return false;
+  }
+  *state = state_line.substr(strlen(kStatePrefix), std::string::npos);
+  return true;
+}
+
+void UserCollector::EnqueueCollectionErrorLog(pid_t pid,
+                                              ErrorType error_type,
+                                              const std::string &exec) {
+  FilePath crash_path;
+  LOG(INFO) << "Writing conversion problems as separate crash report.";
+  if (!GetCreatedCrashDirectoryByEuid(0, &crash_path, nullptr)) {
+    LOG(ERROR) << "Could not even get log directory; out of space?";
+    return;
+  }
+  AddCrashMetaData("sig", kCollectionErrorSignature);
+  AddCrashMetaData("error_type", GetErrorTypeSignature(error_type));
+  std::string dump_basename = FormatDumpBasename(exec, time(nullptr), pid);
+  std::string error_log = chromeos::GetLog();
+  FilePath diag_log_path = GetCrashPath(crash_path, dump_basename, "diaglog");
+  if (GetLogContents(FilePath(log_config_path_), kCollectionErrorSignature,
+                     diag_log_path)) {
+    // We load the contents of diag_log into memory and append it to
+    // the error log.  We cannot just append to files because we need
+    // to always create new files to prevent attack.
+    std::string diag_log_contents;
+    base::ReadFileToString(diag_log_path, &diag_log_contents);
+    error_log.append(diag_log_contents);
+    base::DeleteFile(diag_log_path, false);
+  }
+  FilePath log_path = GetCrashPath(crash_path, dump_basename, "log");
+  FilePath meta_path = GetCrashPath(crash_path, dump_basename, "meta");
+  // We must use WriteNewFile instead of base::WriteFile as we do
+  // not want to write with root access to a symlink that an attacker
+  // might have created.
+  if (WriteNewFile(log_path, error_log.data(), error_log.length()) < 0) {
+    LOG(ERROR) << "Error writing new file " << log_path.value();
+    return;
+  }
+  WriteCrashMetaData(meta_path, exec, log_path.value());
+}
+
+bool UserCollector::CopyOffProcFiles(pid_t pid,
+                                     const FilePath &container_dir) {
+  if (!base::CreateDirectory(container_dir)) {
+    PLOG(ERROR) << "Could not create " << container_dir.value().c_str();
+    return false;
+  }
+  FilePath process_path = GetProcessPath(pid);
+  if (!base::PathExists(process_path)) {
+    LOG(ERROR) << "Path " << process_path.value() << " does not exist";
+    return false;
+  }
+  static const char *proc_files[] = {
+    "auxv",
+    "cmdline",
+    "environ",
+    "maps",
+    "status"
+  };
+  for (unsigned i = 0; i < arraysize(proc_files); ++i) {
+    if (!base::CopyFile(process_path.Append(proc_files[i]),
+                        container_dir.Append(proc_files[i]))) {
+      LOG(ERROR) << "Could not copy " << proc_files[i] << " file";
+      return false;
+    }
+  }
+  return true;
+}
+
+bool UserCollector::ValidateProcFiles(const FilePath &container_dir) const {
+  // Check if the maps file is empty, which could be due to the crashed
+  // process being reaped by the kernel before finishing a core dump.
+  int64_t file_size = 0;
+  if (!base::GetFileSize(container_dir.Append("maps"), &file_size)) {
+    LOG(ERROR) << "Could not get the size of maps file";
+    return false;
+  }
+  if (file_size == 0) {
+    LOG(ERROR) << "maps file is empty";
+    return false;
+  }
+  return true;
+}
+
+UserCollector::ErrorType UserCollector::ValidateCoreFile(
+    const FilePath &core_path) const {
+  int fd = HANDLE_EINTR(open(core_path.value().c_str(), O_RDONLY));
+  if (fd < 0) {
+    PLOG(ERROR) << "Could not open core file " << core_path.value();
+    return kErrorInvalidCoreFile;
+  }
+
+  char e_ident[EI_NIDENT];
+  bool read_ok = base::ReadFromFD(fd, e_ident, sizeof(e_ident));
+  IGNORE_EINTR(close(fd));
+  if (!read_ok) {
+    LOG(ERROR) << "Could not read header of core file";
+    return kErrorInvalidCoreFile;
+  }
+
+  if (e_ident[EI_MAG0] != ELFMAG0 || e_ident[EI_MAG1] != ELFMAG1 ||
+      e_ident[EI_MAG2] != ELFMAG2 || e_ident[EI_MAG3] != ELFMAG3) {
+    LOG(ERROR) << "Invalid core file";
+    return kErrorInvalidCoreFile;
+  }
+
+#if __WORDSIZE == 64
+  // TODO(benchan, mkrebs): Remove this check once core2md can
+  // handles both 32-bit and 64-bit ELF on a 64-bit platform.
+  if (e_ident[EI_CLASS] == ELFCLASS32) {
+    LOG(ERROR) << "Conversion of 32-bit core file on 64-bit platform is "
+               << "currently not supported";
+    return kErrorUnsupported32BitCoreFile;
+  }
+#endif
+
+  return kErrorNone;
+}
+
+bool UserCollector::GetCreatedCrashDirectory(pid_t pid, uid_t supplied_ruid,
+                                             FilePath *crash_file_path,
+                                             bool *out_of_capacity) {
+  FilePath process_path = GetProcessPath(pid);
+  std::string status;
+  if (directory_failure_) {
+    LOG(ERROR) << "Purposefully failing to create spool directory";
+    return false;
+  }
+
+  uid_t uid;
+  if (base::ReadFileToString(process_path.Append("status"), &status)) {
+    std::vector<std::string> status_lines;
+    base::SplitString(status, '\n', &status_lines);
+
+    std::string process_state;
+    if (!GetStateFromStatus(status_lines, &process_state)) {
+      LOG(ERROR) << "Could not find process state in status file";
+      return false;
+    }
+    LOG(INFO) << "State of crashed process [" << pid << "]: " << process_state;
+
+    // Get effective UID of crashing process.
+    int id;
+    if (!GetIdFromStatus(kUserId, kIdEffective, status_lines, &id)) {
+      LOG(ERROR) << "Could not find euid in status file";
+      return false;
+    }
+    uid = id;
+  } else if (supplied_ruid != kUnknownUid) {
+    LOG(INFO) << "Using supplied UID " << supplied_ruid
+              << " for crashed process [" << pid
+              << "] due to error reading status file";
+    uid = supplied_ruid;
+  } else {
+    LOG(ERROR) << "Could not read status file and kernel did not supply UID";
+    LOG(INFO) << "Path " << process_path.value() << " DirectoryExists: "
+              << base::DirectoryExists(process_path);
+    return false;
+  }
+
+  if (!GetCreatedCrashDirectoryByEuid(uid, crash_file_path, out_of_capacity)) {
+    LOG(ERROR) << "Could not create crash directory";
+    return false;
+  }
+  return true;
+}
+
+bool UserCollector::CopyStdinToCoreFile(const FilePath &core_path) {
+  // Copy off all stdin to a core file.
+  FilePath stdin_path("/dev/fd/0");
+  if (base::CopyFile(stdin_path, core_path)) {
+    return true;
+  }
+
+  PLOG(ERROR) << "Could not write core file";
+  // If the file system was full, make sure we remove any remnants.
+  base::DeleteFile(core_path, false);
+  return false;
+}
+
+bool UserCollector::RunCoreToMinidump(const FilePath &core_path,
+                                      const FilePath &procfs_directory,
+                                      const FilePath &minidump_path,
+                                      const FilePath &temp_directory) {
+  FilePath output_path = temp_directory.Append("output");
+  chromeos::ProcessImpl core2md;
+  core2md.RedirectOutput(output_path.value());
+  core2md.AddArg(kCoreToMinidumpConverterPath);
+  core2md.AddArg(core_path.value());
+  core2md.AddArg(procfs_directory.value());
+
+  if (!core2md_failure_) {
+    core2md.AddArg(minidump_path.value());
+  } else {
+    // To test how core2md errors are propagaged, cause an error
+    // by forgetting a required argument.
+  }
+
+  int errorlevel = core2md.Run();
+
+  std::string output;
+  base::ReadFileToString(output_path, &output);
+  if (errorlevel != 0) {
+    LOG(ERROR) << "Problem during " << kCoreToMinidumpConverterPath
+               << " [result=" << errorlevel << "]: " << output;
+    return false;
+  }
+
+  if (!base::PathExists(minidump_path)) {
+    LOG(ERROR) << "Minidump file " << minidump_path.value()
+               << " was not created";
+    return false;
+  }
+  return true;
+}
+
+UserCollector::ErrorType UserCollector::ConvertCoreToMinidump(
+    pid_t pid,
+    const FilePath &container_dir,
+    const FilePath &core_path,
+    const FilePath &minidump_path) {
+  // If proc files are unuable, we continue to read the core file from stdin,
+  // but only skip the core-to-minidump conversion, so that we may still use
+  // the core file for debugging.
+  bool proc_files_usable =
+      CopyOffProcFiles(pid, container_dir) && ValidateProcFiles(container_dir);
+
+  if (!CopyStdinToCoreFile(core_path)) {
+    return kErrorReadCoreData;
+  }
+
+  if (!proc_files_usable) {
+    LOG(INFO) << "Skipped converting core file to minidump due to "
+              << "unusable proc files";
+    return kErrorUnusableProcFiles;
+  }
+
+  ErrorType error = ValidateCoreFile(core_path);
+  if (error != kErrorNone) {
+    return error;
+  }
+
+  if (!RunCoreToMinidump(core_path,
+                         container_dir,  // procfs directory
+                         minidump_path,
+                         container_dir)) {  // temporary directory
+    return kErrorCore2MinidumpConversion;
+  }
+
+  LOG(INFO) << "Stored minidump to " << minidump_path.value();
+  return kErrorNone;
+}
+
+UserCollector::ErrorType UserCollector::ConvertAndEnqueueCrash(
+    pid_t pid, const std::string &exec, uid_t supplied_ruid,
+    bool *out_of_capacity) {
+  FilePath crash_path;
+  if (!GetCreatedCrashDirectory(pid, supplied_ruid, &crash_path,
+      out_of_capacity)) {
+    LOG(ERROR) << "Unable to find/create process-specific crash path";
+    return kErrorSystemIssue;
+  }
+
+  // Directory like /tmp/crash_reporter/1234 which contains the
+  // procfs entries and other temporary files used during conversion.
+  FilePath container_dir(StringPrintf("/tmp/crash_reporter/%d", pid));
+  // Delete a pre-existing directory from crash reporter that may have
+  // been left around for diagnostics from a failed conversion attempt.
+  // If we don't, existing files can cause forking to fail.
+  base::DeleteFile(container_dir, true);
+  std::string dump_basename = FormatDumpBasename(exec, time(nullptr), pid);
+  FilePath core_path = GetCrashPath(crash_path, dump_basename, "core");
+  FilePath meta_path = GetCrashPath(crash_path, dump_basename, "meta");
+  FilePath minidump_path = GetCrashPath(crash_path, dump_basename, "dmp");
+  FilePath log_path = GetCrashPath(crash_path, dump_basename, "log");
+
+  if (GetLogContents(FilePath(log_config_path_), exec, log_path))
+    AddCrashMetaData("log", log_path.value());
+
+  ErrorType error_type =
+      ConvertCoreToMinidump(pid, container_dir, core_path, minidump_path);
+  if (error_type != kErrorNone) {
+    LOG(INFO) << "Leaving core file at " << core_path.value()
+              << " due to conversion error";
+    return error_type;
+  }
+
+  // Here we commit to sending this file.  We must not return false
+  // after this point or we will generate a log report as well as a
+  // crash report.
+  WriteCrashMetaData(meta_path,
+                     exec,
+                     minidump_path.value());
+
+  if (!IsDeveloperImage()) {
+    base::DeleteFile(core_path, false);
+  } else {
+    LOG(INFO) << "Leaving core file at " << core_path.value()
+              << " due to developer image";
+  }
+
+  base::DeleteFile(container_dir, true);
+  return kErrorNone;
+}
+
+bool UserCollector::ParseCrashAttributes(const std::string &crash_attributes,
+                                         pid_t *pid, int *signal, uid_t *uid,
+                                         std::string *kernel_supplied_name) {
+  pcrecpp::RE re("(\\d+):(\\d+):(\\d+):(.*)");
+  if (re.FullMatch(crash_attributes, pid, signal, uid, kernel_supplied_name))
+    return true;
+
+  LOG(INFO) << "Falling back to parsing crash attributes '"
+            << crash_attributes << "' without UID";
+  pcrecpp::RE re_without_uid("(\\d+):(\\d+):(.*)");
+  *uid = kUnknownUid;
+  return re_without_uid.FullMatch(crash_attributes, pid, signal,
+      kernel_supplied_name);
+}
+
+bool UserCollector::ShouldDump(bool has_owner_consent,
+                               bool is_developer,
+                               std::string *reason) {
+  reason->clear();
+
+  // For developer builds, we always want to keep the crash reports unless
+  // we're testing the crash facilities themselves.  This overrides
+  // feedback.  Crash sending still obeys consent.
+  if (is_developer) {
+    *reason = "developer build - not testing - always dumping";
+    return true;
+  }
+
+  if (!has_owner_consent) {
+    *reason = "ignoring - no consent";
+    return false;
+  }
+
+  *reason = "handling";
+  return true;
+}
+
+bool UserCollector::HandleCrash(const std::string &crash_attributes,
+                                const char *force_exec) {
+  CHECK(initialized_);
+  pid_t pid = 0;
+  int signal = 0;
+  uid_t supplied_ruid = kUnknownUid;
+  std::string kernel_supplied_name;
+
+  if (!ParseCrashAttributes(crash_attributes, &pid, &signal, &supplied_ruid,
+                            &kernel_supplied_name)) {
+    LOG(ERROR) << "Invalid parameter: --user=" <<  crash_attributes;
+    return false;
+  }
+
+  std::string exec;
+  if (force_exec) {
+    exec.assign(force_exec);
+  } else if (!GetExecutableBaseNameFromPid(pid, &exec)) {
+    // If we cannot find the exec name, use the kernel supplied name.
+    // We don't always use the kernel's since it truncates the name to
+    // 16 characters.
+    exec = StringPrintf("supplied_%s", kernel_supplied_name.c_str());
+  }
+
+  // Allow us to test the crash reporting mechanism successfully even if
+  // other parts of the system crash.
+  if (!filter_in_.empty() &&
+      (filter_in_ == "none" ||
+       filter_in_ != exec)) {
+    // We use a different format message to make it more obvious in tests
+    // which crashes are test generated and which are real.
+    LOG(WARNING) << "Ignoring crash from " << exec << "[" << pid << "] while "
+                 << "filter_in=" << filter_in_ << ".";
+    return true;
+  }
+
+  std::string reason;
+  bool dump = ShouldDump(is_feedback_allowed_function_(),
+                         IsDeveloperImage(),
+                         &reason);
+
+  LOG(WARNING) << "Received crash notification for " << exec << "[" << pid
+               << "] sig " << signal << ", user " << supplied_ruid
+               << " (" << reason << ")";
+
+  if (dump) {
+    count_crash_function_();
+
+    if (generate_diagnostics_) {
+      bool out_of_capacity = false;
+      ErrorType error_type =
+          ConvertAndEnqueueCrash(pid, exec, supplied_ruid, &out_of_capacity);
+      if (error_type != kErrorNone) {
+        if (!out_of_capacity)
+          EnqueueCollectionErrorLog(pid, error_type, exec);
+        return false;
+      }
+    }
+  }
+
+  return true;
+}
diff --git a/crash_reporter/user_collector.h b/crash_reporter/user_collector.h
new file mode 100644
index 0000000..7b356ee
--- /dev/null
+++ b/crash_reporter/user_collector.h
@@ -0,0 +1,190 @@
+// Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CRASH_REPORTER_USER_COLLECTOR_H_
+#define CRASH_REPORTER_USER_COLLECTOR_H_
+
+#include <string>
+#include <vector>
+
+#include <base/files/file_path.h>
+#include <base/macros.h>
+#include <gtest/gtest_prod.h>  // for FRIEND_TEST
+
+#include "crash_collector.h"
+
+class SystemLogging;
+
+// User crash collector.
+class UserCollector : public CrashCollector {
+ public:
+  UserCollector();
+
+  // Initialize the user crash collector for detection of crashes,
+  // given a crash counting function, the path to this executable,
+  // metrics collection enabled oracle, and system logger facility.
+  // Crash detection/reporting is not enabled until Enable is called.
+  // |generate_diagnostics| is used to indicate whether or not to try
+  // to generate a minidump from crashes.
+  void Initialize(CountCrashFunction count_crash,
+                  const std::string &our_path,
+                  IsFeedbackAllowedFunction is_metrics_allowed,
+                  bool generate_diagnostics,
+                  bool core2md_failure,
+                  bool directory_failure,
+                  const std::string &filter_in);
+
+  ~UserCollector() override;
+
+  // Enable collection.
+  bool Enable() { return SetUpInternal(true); }
+
+  // Disable collection.
+  bool Disable() { return SetUpInternal(false); }
+
+  // Handle a specific user crash.  Returns true on success.
+  bool HandleCrash(const std::string &crash_attributes,
+                   const char *force_exec);
+
+  // Set (override the default) core file pattern.
+  void set_core_pattern_file(const std::string &pattern) {
+    core_pattern_file_ = pattern;
+  }
+
+  // Set (override the default) core pipe limit file.
+  void set_core_pipe_limit_file(const std::string &path) {
+    core_pipe_limit_file_ = path;
+  }
+
+ private:
+  friend class UserCollectorTest;
+  FRIEND_TEST(UserCollectorTest, CopyOffProcFilesBadPath);
+  FRIEND_TEST(UserCollectorTest, CopyOffProcFilesBadPid);
+  FRIEND_TEST(UserCollectorTest, CopyOffProcFilesOK);
+  FRIEND_TEST(UserCollectorTest, GetExecutableBaseNameFromPid);
+  FRIEND_TEST(UserCollectorTest, GetFirstLineWithPrefix);
+  FRIEND_TEST(UserCollectorTest, GetIdFromStatus);
+  FRIEND_TEST(UserCollectorTest, GetStateFromStatus);
+  FRIEND_TEST(UserCollectorTest, GetProcessPath);
+  FRIEND_TEST(UserCollectorTest, GetSymlinkTarget);
+  FRIEND_TEST(UserCollectorTest, GetUserInfoFromName);
+  FRIEND_TEST(UserCollectorTest, ParseCrashAttributes);
+  FRIEND_TEST(UserCollectorTest, ShouldDumpChromeOverridesDeveloperImage);
+  FRIEND_TEST(UserCollectorTest, ShouldDumpDeveloperImageOverridesConsent);
+  FRIEND_TEST(UserCollectorTest, ShouldDumpUseConsentProductionImage);
+  FRIEND_TEST(UserCollectorTest, ValidateProcFiles);
+  FRIEND_TEST(UserCollectorTest, ValidateCoreFile);
+
+  // Enumeration to pass to GetIdFromStatus.  Must match the order
+  // that the kernel lists IDs in the status file.
+  enum IdKind {
+    kIdReal = 0,  // uid and gid
+    kIdEffective = 1,  // euid and egid
+    kIdSet = 2,  // suid and sgid
+    kIdFileSystem = 3,  // fsuid and fsgid
+    kIdMax
+  };
+
+  enum ErrorType {
+    kErrorNone,
+    kErrorSystemIssue,
+    kErrorReadCoreData,
+    kErrorUnusableProcFiles,
+    kErrorInvalidCoreFile,
+    kErrorUnsupported32BitCoreFile,
+    kErrorCore2MinidumpConversion,
+  };
+
+  static const int kForkProblem = 255;
+
+  // Returns an error type signature for a given |error_type| value,
+  // which is reported to the crash server along with the
+  // crash_reporter-user-collection signature.
+  std::string GetErrorTypeSignature(ErrorType error_type) const;
+
+  std::string GetPattern(bool enabled) const;
+  bool SetUpInternal(bool enabled);
+
+  // Returns, via |line|, the first line in |lines| that starts with |prefix|.
+  // Returns true if a line is found, or false otherwise.
+  bool GetFirstLineWithPrefix(const std::vector<std::string> &lines,
+                              const char *prefix, std::string *line);
+
+  // Returns the identifier of |kind|, via |id|, found in |status_lines| on
+  // the line starting with |prefix|. |status_lines| contains the lines in
+  // the status file. Returns true if the identifier can be determined.
+  bool GetIdFromStatus(const char *prefix,
+                       IdKind kind,
+                       const std::vector<std::string> &status_lines,
+                       int *id);
+
+  // Returns the process state, via |state|, found in |status_lines|, which
+  // contains the lines in the status file. Returns true if the process state
+  // can be determined.
+  bool GetStateFromStatus(const std::vector<std::string> &status_lines,
+                          std::string *state);
+
+  void LogCollectionError(const std::string &error_message);
+  void EnqueueCollectionErrorLog(pid_t pid, ErrorType error_type,
+                                 const std::string &exec_name);
+
+  bool CopyOffProcFiles(pid_t pid, const base::FilePath &container_dir);
+
+  // Validates the proc files at |container_dir| and returns true if they
+  // are usable for the core-to-minidump conversion later. For instance, if
+  // a process is reaped by the kernel before the copying of its proc files
+  // takes place, some proc files like /proc/<pid>/maps may contain nothing
+  // and thus become unusable.
+  bool ValidateProcFiles(const base::FilePath &container_dir) const;
+
+  // Validates the core file at |core_path| and returns kErrorNone if
+  // the file contains the ELF magic bytes and an ELF class that matches the
+  // platform (i.e. 32-bit ELF on a 32-bit platform or 64-bit ELF on a 64-bit
+  // platform), which is due to the limitation in core2md. It returns an error
+  // type otherwise.
+  ErrorType ValidateCoreFile(const base::FilePath &core_path) const;
+
+  // Determines the crash directory for given pid based on pid's owner,
+  // and creates the directory if necessary with appropriate permissions.
+  // Returns true whether or not directory needed to be created, false on
+  // any failure.
+  bool GetCreatedCrashDirectory(pid_t pid, uid_t supplied_ruid,
+                                base::FilePath *crash_file_path,
+                                bool *out_of_capacity);
+  bool CopyStdinToCoreFile(const base::FilePath &core_path);
+  bool RunCoreToMinidump(const base::FilePath &core_path,
+                         const base::FilePath &procfs_directory,
+                         const base::FilePath &minidump_path,
+                         const base::FilePath &temp_directory);
+  ErrorType ConvertCoreToMinidump(pid_t pid,
+                                  const base::FilePath &container_dir,
+                                  const base::FilePath &core_path,
+                                  const base::FilePath &minidump_path);
+  ErrorType ConvertAndEnqueueCrash(pid_t pid, const std::string &exec_name,
+                                   uid_t supplied_ruid, bool *out_of_capacity);
+  bool ParseCrashAttributes(const std::string &crash_attributes,
+                            pid_t *pid, int *signal, uid_t *uid,
+                            std::string *kernel_supplied_name);
+
+  bool ShouldDump(bool has_owner_consent,
+                  bool is_developer,
+                  std::string *reason);
+
+  bool generate_diagnostics_;
+  std::string core_pattern_file_;
+  std::string core_pipe_limit_file_;
+  std::string our_path_;
+  bool initialized_;
+
+  bool core2md_failure_;
+  bool directory_failure_;
+  std::string filter_in_;
+
+  static const char *kUserId;
+  static const char *kGroupId;
+
+  DISALLOW_COPY_AND_ASSIGN(UserCollector);
+};
+
+#endif  // CRASH_REPORTER_USER_COLLECTOR_H_
diff --git a/crash_reporter/user_collector_test.cc b/crash_reporter/user_collector_test.cc
new file mode 100644
index 0000000..ee3ca12
--- /dev/null
+++ b/crash_reporter/user_collector_test.cc
@@ -0,0 +1,492 @@
+// Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "user_collector.h"
+
+#include <elf.h>
+#include <sys/cdefs.h>  // For __WORDSIZE
+#include <unistd.h>
+
+#include <base/files/file_util.h>
+#include <base/files/scoped_temp_dir.h>
+#include <base/strings/string_split.h>
+#include <chromeos/syslog_logging.h>
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+
+using base::FilePath;
+using chromeos::FindLog;
+
+namespace {
+
+int s_crashes = 0;
+bool s_metrics = false;
+
+const char kFilePath[] = "/my/path";
+
+// Keep in sync with UserCollector::ShouldDump.
+const char kChromeIgnoreMsg[] =
+    "ignoring call by kernel - chrome crash; "
+    "waiting for chrome to call us directly";
+
+void CountCrash() {
+  ++s_crashes;
+}
+
+bool IsMetrics() {
+  return s_metrics;
+}
+
+}  // namespace
+
+class UserCollectorMock : public UserCollector {
+ public:
+  MOCK_METHOD0(SetUpDBus, void());
+};
+
+class UserCollectorTest : public ::testing::Test {
+  void SetUp() {
+    s_crashes = 0;
+
+    EXPECT_CALL(collector_, SetUpDBus()).WillRepeatedly(testing::Return());
+
+    collector_.Initialize(CountCrash,
+                          kFilePath,
+                          IsMetrics,
+                          false,
+                          false,
+                          false,
+                          "");
+    base::DeleteFile(FilePath("test"), true);
+    mkdir("test", 0777);
+    collector_.set_core_pattern_file("test/core_pattern");
+    collector_.set_core_pipe_limit_file("test/core_pipe_limit");
+    pid_ = getpid();
+    chromeos::ClearLog();
+  }
+
+ protected:
+  void ExpectFileEquals(const char *golden,
+                        const FilePath &file_path) {
+    std::string contents;
+    EXPECT_TRUE(base::ReadFileToString(file_path, &contents));
+    EXPECT_EQ(golden, contents);
+  }
+
+  std::vector<std::string> SplitLines(const std::string &lines) const {
+    std::vector<std::string> result;
+    base::SplitString(lines, '\n', &result);
+    return result;
+  }
+
+  UserCollectorMock collector_;
+  pid_t pid_;
+};
+
+TEST_F(UserCollectorTest, EnableOK) {
+  ASSERT_TRUE(collector_.Enable());
+  ExpectFileEquals("|/my/path --user=%P:%s:%u:%e",
+                   FilePath("test/core_pattern"));
+  ExpectFileEquals("4", FilePath("test/core_pipe_limit"));
+  ASSERT_EQ(s_crashes, 0);
+  EXPECT_TRUE(FindLog("Enabling user crash handling"));
+}
+
+TEST_F(UserCollectorTest, EnableNoPatternFileAccess) {
+  collector_.set_core_pattern_file("/does_not_exist");
+  ASSERT_FALSE(collector_.Enable());
+  ASSERT_EQ(s_crashes, 0);
+  EXPECT_TRUE(FindLog("Enabling user crash handling"));
+  EXPECT_TRUE(FindLog("Unable to write /does_not_exist"));
+}
+
+TEST_F(UserCollectorTest, EnableNoPipeLimitFileAccess) {
+  collector_.set_core_pipe_limit_file("/does_not_exist");
+  ASSERT_FALSE(collector_.Enable());
+  ASSERT_EQ(s_crashes, 0);
+  // Core pattern should not be written if we cannot access the pipe limit
+  // or otherwise we may set a pattern that results in infinite recursion.
+  ASSERT_FALSE(base::PathExists(FilePath("test/core_pattern")));
+  EXPECT_TRUE(FindLog("Enabling user crash handling"));
+  EXPECT_TRUE(FindLog("Unable to write /does_not_exist"));
+}
+
+TEST_F(UserCollectorTest, DisableOK) {
+  ASSERT_TRUE(collector_.Disable());
+  ExpectFileEquals("core", FilePath("test/core_pattern"));
+  ASSERT_EQ(s_crashes, 0);
+  EXPECT_TRUE(FindLog("Disabling user crash handling"));
+}
+
+TEST_F(UserCollectorTest, DisableNoFileAccess) {
+  collector_.set_core_pattern_file("/does_not_exist");
+  ASSERT_FALSE(collector_.Disable());
+  ASSERT_EQ(s_crashes, 0);
+  EXPECT_TRUE(FindLog("Disabling user crash handling"));
+  EXPECT_TRUE(FindLog("Unable to write /does_not_exist"));
+}
+
+TEST_F(UserCollectorTest, ParseCrashAttributes) {
+  pid_t pid;
+  int signal;
+  uid_t uid;
+  std::string exec_name;
+  EXPECT_TRUE(collector_.ParseCrashAttributes("123456:11:1000:foobar",
+      &pid, &signal, &uid, &exec_name));
+  EXPECT_EQ(123456, pid);
+  EXPECT_EQ(11, signal);
+  EXPECT_EQ(1000, uid);
+  EXPECT_EQ("foobar", exec_name);
+  EXPECT_TRUE(collector_.ParseCrashAttributes("4321:6:barfoo",
+      &pid, &signal, &uid, &exec_name));
+  EXPECT_EQ(4321, pid);
+  EXPECT_EQ(6, signal);
+  EXPECT_EQ(-1, uid);
+  EXPECT_EQ("barfoo", exec_name);
+
+  EXPECT_FALSE(collector_.ParseCrashAttributes("123456:11",
+      &pid, &signal, &uid, &exec_name));
+
+  EXPECT_TRUE(collector_.ParseCrashAttributes("123456:11:exec:extra",
+      &pid, &signal, &uid, &exec_name));
+  EXPECT_EQ("exec:extra", exec_name);
+
+  EXPECT_FALSE(collector_.ParseCrashAttributes("12345p:11:foobar",
+      &pid, &signal, &uid, &exec_name));
+
+  EXPECT_FALSE(collector_.ParseCrashAttributes("123456:1 :foobar",
+      &pid, &signal, &uid, &exec_name));
+
+  EXPECT_FALSE(collector_.ParseCrashAttributes("123456::foobar",
+      &pid, &signal, &uid, &exec_name));
+}
+
+TEST_F(UserCollectorTest, ShouldDumpDeveloperImageOverridesConsent) {
+  std::string reason;
+  EXPECT_TRUE(collector_.ShouldDump(false, true, &reason));
+  EXPECT_EQ("developer build - not testing - always dumping", reason);
+
+  // When running a crash test, behave as normal.
+  EXPECT_FALSE(collector_.ShouldDump(false, false, &reason));
+  EXPECT_EQ("ignoring - no consent", reason);
+}
+
+TEST_F(UserCollectorTest, ShouldDumpUseConsentProductionImage) {
+  std::string result;
+  EXPECT_FALSE(collector_.ShouldDump(false, false, &result));
+  EXPECT_EQ("ignoring - no consent", result);
+
+  EXPECT_TRUE(collector_.ShouldDump(true, false, &result));
+  EXPECT_EQ("handling", result);
+}
+
+TEST_F(UserCollectorTest, HandleCrashWithoutConsent) {
+  s_metrics = false;
+  collector_.HandleCrash("20:10:ignored", "foobar");
+  EXPECT_TRUE(FindLog(
+      "Received crash notification for foobar[20] sig 10"));
+  ASSERT_EQ(s_crashes, 0);
+}
+
+TEST_F(UserCollectorTest, HandleNonChromeCrashWithConsent) {
+  s_metrics = true;
+  collector_.HandleCrash("5:2:ignored", "chromeos-wm");
+  EXPECT_TRUE(FindLog(
+      "Received crash notification for chromeos-wm[5] sig 2"));
+  ASSERT_EQ(s_crashes, 1);
+}
+
+TEST_F(UserCollectorTest, HandleChromeCrashWithConsent) {
+  s_metrics = true;
+  collector_.HandleCrash("5:2:ignored", "chrome");
+  EXPECT_TRUE(FindLog(
+      "Received crash notification for chrome[5] sig 2"));
+  EXPECT_TRUE(FindLog(kChromeIgnoreMsg));
+  ASSERT_EQ(s_crashes, 0);
+}
+
+TEST_F(UserCollectorTest, HandleSuppliedChromeCrashWithConsent) {
+  s_metrics = true;
+  collector_.HandleCrash("0:2:chrome", nullptr);
+  EXPECT_TRUE(FindLog(
+      "Received crash notification for supplied_chrome[0] sig 2"));
+  EXPECT_TRUE(FindLog(kChromeIgnoreMsg));
+  ASSERT_EQ(s_crashes, 0);
+}
+
+TEST_F(UserCollectorTest, GetProcessPath) {
+  FilePath path = collector_.GetProcessPath(100);
+  ASSERT_EQ("/proc/100", path.value());
+}
+
+TEST_F(UserCollectorTest, GetSymlinkTarget) {
+  FilePath result;
+  ASSERT_FALSE(collector_.GetSymlinkTarget(FilePath("/does_not_exist"),
+                                           &result));
+  ASSERT_TRUE(FindLog(
+      "Readlink failed on /does_not_exist with 2"));
+  std::string long_link;
+  for (int i = 0; i < 50; ++i)
+    long_link += "0123456789";
+  long_link += "/gold";
+
+  for (size_t len = 1; len <= long_link.size(); ++len) {
+    std::string this_link;
+    static const char kLink[] = "test/this_link";
+    this_link.assign(long_link.c_str(), len);
+    ASSERT_EQ(len, this_link.size());
+    unlink(kLink);
+    ASSERT_EQ(0, symlink(this_link.c_str(), kLink));
+    ASSERT_TRUE(collector_.GetSymlinkTarget(FilePath(kLink), &result));
+    ASSERT_EQ(this_link, result.value());
+  }
+}
+
+TEST_F(UserCollectorTest, GetExecutableBaseNameFromPid) {
+  std::string base_name;
+  EXPECT_FALSE(collector_.GetExecutableBaseNameFromPid(0, &base_name));
+  EXPECT_TRUE(FindLog(
+      "Readlink failed on /proc/0/exe with 2"));
+  EXPECT_TRUE(FindLog(
+      "GetSymlinkTarget failed - Path /proc/0 DirectoryExists: 0"));
+  EXPECT_TRUE(FindLog("stat /proc/0/exe failed: -1 2"));
+
+  chromeos::ClearLog();
+  pid_t my_pid = getpid();
+  EXPECT_TRUE(collector_.GetExecutableBaseNameFromPid(my_pid, &base_name));
+  EXPECT_FALSE(FindLog("Readlink failed"));
+  EXPECT_EQ("crash_reporter_test", base_name);
+}
+
+TEST_F(UserCollectorTest, GetFirstLineWithPrefix) {
+  std::vector<std::string> lines;
+  std::string line;
+
+  EXPECT_FALSE(collector_.GetFirstLineWithPrefix(lines, "Name:", &line));
+  EXPECT_EQ("", line);
+
+  lines.push_back("Name:\tls");
+  lines.push_back("State:\tR (running)");
+  lines.push_back(" Foo:\t1000");
+
+  line.clear();
+  EXPECT_TRUE(collector_.GetFirstLineWithPrefix(lines, "Name:", &line));
+  EXPECT_EQ(lines[0], line);
+
+  line.clear();
+  EXPECT_TRUE(collector_.GetFirstLineWithPrefix(lines, "State:", &line));
+  EXPECT_EQ(lines[1], line);
+
+  line.clear();
+  EXPECT_FALSE(collector_.GetFirstLineWithPrefix(lines, "Foo:", &line));
+  EXPECT_EQ("", line);
+
+  line.clear();
+  EXPECT_TRUE(collector_.GetFirstLineWithPrefix(lines, " Foo:", &line));
+  EXPECT_EQ(lines[2], line);
+
+  line.clear();
+  EXPECT_FALSE(collector_.GetFirstLineWithPrefix(lines, "Bar:", &line));
+  EXPECT_EQ("", line);
+}
+
+TEST_F(UserCollectorTest, GetIdFromStatus) {
+  int id = 1;
+  EXPECT_FALSE(collector_.GetIdFromStatus(UserCollector::kUserId,
+                                          UserCollector::kIdEffective,
+                                          SplitLines("nothing here"),
+                                          &id));
+  EXPECT_EQ(id, 1);
+
+  // Not enough parameters.
+  EXPECT_FALSE(collector_.GetIdFromStatus(UserCollector::kUserId,
+                                          UserCollector::kIdReal,
+                                          SplitLines("line 1\nUid:\t1\n"),
+                                          &id));
+
+  const std::vector<std::string> valid_contents =
+      SplitLines("\nUid:\t1\t2\t3\t4\nGid:\t5\t6\t7\t8\n");
+  EXPECT_TRUE(collector_.GetIdFromStatus(UserCollector::kUserId,
+                                         UserCollector::kIdReal,
+                                         valid_contents,
+                                         &id));
+  EXPECT_EQ(1, id);
+
+  EXPECT_TRUE(collector_.GetIdFromStatus(UserCollector::kUserId,
+                                         UserCollector::kIdEffective,
+                                         valid_contents,
+                                         &id));
+  EXPECT_EQ(2, id);
+
+  EXPECT_TRUE(collector_.GetIdFromStatus(UserCollector::kUserId,
+                                         UserCollector::kIdFileSystem,
+                                         valid_contents,
+                                         &id));
+  EXPECT_EQ(4, id);
+
+  EXPECT_TRUE(collector_.GetIdFromStatus(UserCollector::kGroupId,
+                                         UserCollector::kIdEffective,
+                                         valid_contents,
+                                         &id));
+  EXPECT_EQ(6, id);
+
+  EXPECT_TRUE(collector_.GetIdFromStatus(UserCollector::kGroupId,
+                                         UserCollector::kIdSet,
+                                         valid_contents,
+                                         &id));
+  EXPECT_EQ(7, id);
+
+  EXPECT_FALSE(collector_.GetIdFromStatus(UserCollector::kGroupId,
+                                          UserCollector::IdKind(5),
+                                          valid_contents,
+                                          &id));
+  EXPECT_FALSE(collector_.GetIdFromStatus(UserCollector::kGroupId,
+                                          UserCollector::IdKind(-1),
+                                          valid_contents,
+                                          &id));
+
+  // Fail if junk after number
+  EXPECT_FALSE(collector_.GetIdFromStatus(UserCollector::kUserId,
+                                          UserCollector::kIdReal,
+                                          SplitLines("Uid:\t1f\t2\t3\t4\n"),
+                                          &id));
+  EXPECT_TRUE(collector_.GetIdFromStatus(UserCollector::kUserId,
+                                         UserCollector::kIdReal,
+                                         SplitLines("Uid:\t1\t2\t3\t4\n"),
+                                         &id));
+  EXPECT_EQ(1, id);
+
+  // Fail if more than 4 numbers.
+  EXPECT_FALSE(collector_.GetIdFromStatus(UserCollector::kUserId,
+                                          UserCollector::kIdReal,
+                                          SplitLines("Uid:\t1\t2\t3\t4\t5\n"),
+                                          &id));
+}
+
+TEST_F(UserCollectorTest, GetStateFromStatus) {
+  std::string state;
+  EXPECT_FALSE(collector_.GetStateFromStatus(SplitLines("nothing here"),
+                                             &state));
+  EXPECT_EQ("", state);
+
+  EXPECT_TRUE(collector_.GetStateFromStatus(SplitLines("State:\tR (running)"),
+                                            &state));
+  EXPECT_EQ("R (running)", state);
+
+  EXPECT_TRUE(collector_.GetStateFromStatus(
+      SplitLines("Name:\tls\nState:\tZ (zombie)\n"), &state));
+  EXPECT_EQ("Z (zombie)", state);
+}
+
+TEST_F(UserCollectorTest, GetUserInfoFromName) {
+  gid_t gid = 100;
+  uid_t uid = 100;
+  EXPECT_TRUE(collector_.GetUserInfoFromName("root", &uid, &gid));
+  EXPECT_EQ(0, uid);
+  EXPECT_EQ(0, gid);
+}
+
+TEST_F(UserCollectorTest, CopyOffProcFilesBadPath) {
+  // Try a path that is not writable.
+  ASSERT_FALSE(collector_.CopyOffProcFiles(pid_, FilePath("/bad/path")));
+  EXPECT_TRUE(FindLog("Could not create /bad/path"));
+}
+
+TEST_F(UserCollectorTest, CopyOffProcFilesBadPid) {
+  FilePath container_path("test/container");
+  ASSERT_FALSE(collector_.CopyOffProcFiles(0, container_path));
+  EXPECT_TRUE(FindLog("Path /proc/0 does not exist"));
+}
+
+TEST_F(UserCollectorTest, CopyOffProcFilesOK) {
+  FilePath container_path("test/container");
+  ASSERT_TRUE(collector_.CopyOffProcFiles(pid_, container_path));
+  EXPECT_FALSE(FindLog("Could not copy"));
+  static struct {
+    const char *name;
+    bool exists;
+  } expectations[] = {
+    { "auxv", true },
+    { "cmdline", true },
+    { "environ", true },
+    { "maps", true },
+    { "mem", false },
+    { "mounts", false },
+    { "sched", false },
+    { "status", true }
+  };
+  for (unsigned i = 0; i < sizeof(expectations)/sizeof(expectations[0]); ++i) {
+    EXPECT_EQ(expectations[i].exists,
+              base::PathExists(
+                  container_path.Append(expectations[i].name)));
+  }
+}
+
+TEST_F(UserCollectorTest, ValidateProcFiles) {
+  base::ScopedTempDir temp_dir;
+  ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
+  FilePath container_dir = temp_dir.path();
+
+  // maps file not exists (i.e. GetFileSize fails)
+  EXPECT_FALSE(collector_.ValidateProcFiles(container_dir));
+
+  // maps file is empty
+  FilePath maps_file = container_dir.Append("maps");
+  ASSERT_EQ(0, base::WriteFile(maps_file, nullptr, 0));
+  ASSERT_TRUE(base::PathExists(maps_file));
+  EXPECT_FALSE(collector_.ValidateProcFiles(container_dir));
+
+  // maps file is not empty
+  const char data[] = "test data";
+  ASSERT_EQ(sizeof(data), base::WriteFile(maps_file, data, sizeof(data)));
+  ASSERT_TRUE(base::PathExists(maps_file));
+  EXPECT_TRUE(collector_.ValidateProcFiles(container_dir));
+}
+
+TEST_F(UserCollectorTest, ValidateCoreFile) {
+  base::ScopedTempDir temp_dir;
+  ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
+  FilePath container_dir = temp_dir.path();
+  FilePath core_file = container_dir.Append("core");
+
+  // Core file does not exist
+  EXPECT_EQ(UserCollector::kErrorInvalidCoreFile,
+            collector_.ValidateCoreFile(core_file));
+  char e_ident[EI_NIDENT];
+  e_ident[EI_MAG0] = ELFMAG0;
+  e_ident[EI_MAG1] = ELFMAG1;
+  e_ident[EI_MAG2] = ELFMAG2;
+  e_ident[EI_MAG3] = ELFMAG3;
+#if __WORDSIZE == 32
+  e_ident[EI_CLASS] = ELFCLASS32;
+#elif __WORDSIZE == 64
+  e_ident[EI_CLASS] = ELFCLASS64;
+#else
+#error Unknown/unsupported value of __WORDSIZE.
+#endif
+
+  // Core file has the expected header
+  ASSERT_TRUE(base::WriteFile(core_file, e_ident, sizeof(e_ident)));
+  EXPECT_EQ(UserCollector::kErrorNone,
+            collector_.ValidateCoreFile(core_file));
+
+#if __WORDSIZE == 64
+  // 32-bit core file on 64-bit platform
+  e_ident[EI_CLASS] = ELFCLASS32;
+  ASSERT_TRUE(base::WriteFile(core_file, e_ident, sizeof(e_ident)));
+  EXPECT_EQ(UserCollector::kErrorUnsupported32BitCoreFile,
+            collector_.ValidateCoreFile(core_file));
+  e_ident[EI_CLASS] = ELFCLASS64;
+#endif
+
+  // Invalid core files
+  ASSERT_TRUE(base::WriteFile(core_file, e_ident, sizeof(e_ident) - 1));
+  EXPECT_EQ(UserCollector::kErrorInvalidCoreFile,
+            collector_.ValidateCoreFile(core_file));
+
+  e_ident[EI_MAG0] = 0;
+  ASSERT_TRUE(base::WriteFile(core_file, e_ident, sizeof(e_ident)));
+  EXPECT_EQ(UserCollector::kErrorInvalidCoreFile,
+            collector_.ValidateCoreFile(core_file));
+}
diff --git a/crash_reporter/warn_collector.l b/crash_reporter/warn_collector.l
new file mode 100644
index 0000000..de746fe
--- /dev/null
+++ b/crash_reporter/warn_collector.l
@@ -0,0 +1,324 @@
+/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ *
+ * This flex program reads /var/log/messages as it grows and saves kernel
+ * warnings to files.  It keeps track of warnings it has seen (based on
+ * file/line only, ignoring differences in the stack trace), and reports only
+ * the first warning of each kind, but maintains a count of all warnings by
+ * using their hashes as buckets in a UMA sparse histogram.  It also invokes
+ * the crash collector, which collects the warnings and prepares them for later
+ * shipment to the crash server.
+ */
+
+%option noyywrap
+
+%{
+#include <fcntl.h>
+#include <inttypes.h>
+#include <pwd.h>
+#include <stdarg.h>
+#include <sys/inotify.h>
+#include <sys/select.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "metrics/c_metrics_library.h"
+
+int WarnStart(void);
+void WarnEnd(void);
+void WarnInput(char *buf, yy_size_t *result, size_t max_size);
+
+#define YY_INPUT(buf, result, max_size) WarnInput(buf, &result, max_size)
+
+%}
+
+/* Define a few useful regular expressions. */
+
+D               [0-9]
+PREFIX          .*" kernel: [ "*{D}+"."{D}+"]"
+CUT_HERE        {PREFIX}" ------------[ cut here".*
+WARNING         {PREFIX}" WARNING: at "
+END_TRACE       {PREFIX}" ---[ end trace".*
+
+/* Use exclusive start conditions. */
+%x PRE_WARN WARN
+
+%%
+ /* The scanner itself. */
+
+^{CUT_HERE}\n{WARNING}          BEGIN(PRE_WARN);
+.|\n                            /* ignore all other input in state 0 */
+<PRE_WARN>[^ ]+.[^ ]+\n         if (WarnStart()) {
+                                  /* yytext is
+                                     "file:line func+offset/offset()\n" */
+                                  BEGIN(WARN); ECHO;
+                                } else {
+                                  BEGIN(0);
+                                }
+
+ /* Assume the warning ends at the "end trace" line */
+<WARN>^{END_TRACE}\n            ECHO; BEGIN(0); WarnEnd();
+<WARN>^.*\n                     ECHO;
+
+%%
+
+#define HASH_BITMAP_SIZE        (1 << 15)  /* size in bits */
+#define HASH_BITMAP_MASK        (HASH_BITMAP_SIZE - 1)
+
+const char warn_hist_name[] = "Platform.KernelWarningHashes";
+uint32_t hash_bitmap[HASH_BITMAP_SIZE / 32];
+CMetricsLibrary metrics_library;
+
+const char *prog_name;          /* the name of this program */
+int yyin_fd;                    /* instead of FILE *yyin to avoid buffering */
+int i_fd;                       /* for inotify, to detect file changes */
+int testing;                    /* 1 if running test */
+int filter;                     /* 1 when using as filter (for development) */
+int fifo;                       /* 1 when reading from fifo (for devel) */
+int draining;                   /* 1 when draining renamed log file */
+
+const char *msg_path = "/var/log/messages";
+const char warn_dump_dir[]  = "/var/run/kwarn";
+const char *warn_dump_path = "/var/run/kwarn/warning";
+const char *crash_reporter_command;
+
+__attribute__((__format__(__printf__, 1, 2)))
+static void Die(const char *format, ...) {
+  va_list ap;
+  va_start(ap, format);
+  fprintf(stderr, "%s: ", prog_name);
+  vfprintf(stderr, format, ap);
+  exit(1);
+}
+
+static void RunCrashReporter(void) {
+  int status = system(crash_reporter_command);
+  if (status != 0)
+    Die("%s exited with status %d\n", crash_reporter_command, status);
+}
+
+static uint32_t StringHash(const char *string) {
+  uint32_t hash = 0;
+  while (*string != '\0') {
+    hash = (hash << 5) + hash + *string++;
+  }
+  return hash;
+}
+
+/* We expect only a handful of different warnings per boot session, so the
+ * probability of a collision is very low, and statistically it won't matter
+ * (unless warnings with the same hash also happens in tandem, which is even
+ * rarer).
+ */
+static int HashSeen(uint32_t hash) {
+  int word_index = (hash & HASH_BITMAP_MASK) / 32;
+  int bit_index = (hash & HASH_BITMAP_MASK) % 32;
+  return hash_bitmap[word_index] & 1 << bit_index;
+}
+
+static void SetHashSeen(uint32_t hash) {
+  int word_index = (hash & HASH_BITMAP_MASK) / 32;
+  int bit_index = (hash & HASH_BITMAP_MASK) % 32;
+  hash_bitmap[word_index] |= 1 << bit_index;
+}
+
+#pragma GCC diagnostic ignored "-Wwrite-strings"
+int WarnStart(void) {
+  uint32_t hash;
+  char *spacep;
+
+  if (filter)
+    return 1;
+
+  hash = StringHash(yytext);
+  if (!(testing || fifo || filter)) {
+    CMetricsLibrarySendSparseToUMA(metrics_library, warn_hist_name, (int) hash);
+  }
+  if (HashSeen(hash))
+    return 0;
+  SetHashSeen(hash);
+
+  yyout = fopen(warn_dump_path, "w");
+  if (yyout == NULL)
+    Die("fopen %s failed: %s\n", warn_dump_path, strerror(errno));
+  spacep = strchr(yytext, ' ');
+  if (spacep == NULL || spacep[1] == '\0')
+    spacep = "unknown-function";
+  fprintf(yyout, "%08x-%s\n", hash, spacep + 1);
+  return 1;
+}
+
+void WarnEnd(void) {
+  if (filter)
+    return;
+  fclose(yyout);
+  yyout = stdout;               /* for debugging */
+  RunCrashReporter();
+}
+
+static void WarnOpenInput(const char *path) {
+  yyin_fd = open(path, O_RDONLY);
+  if (yyin_fd < 0)
+    Die("could not open %s: %s\n", path, strerror(errno));
+  if (!fifo) {
+    /* Go directly to the end of the file.  We don't want to parse the same
+     * warnings multiple times on reboot/restart.  We might miss some
+     * warnings, but so be it---it's too hard to keep track reliably of the
+     * last parsed position in the syslog.
+     */
+    if (lseek(yyin_fd, 0, SEEK_END) < 0)
+      Die("could not lseek %s: %s\n", path, strerror(errno));
+    /* Set up notification of file growth and rename. */
+    i_fd = inotify_init();
+    if (i_fd < 0)
+      Die("inotify_init: %s\n", strerror(errno));
+    if (inotify_add_watch(i_fd, path, IN_MODIFY | IN_MOVE_SELF) < 0)
+      Die("inotify_add_watch: %s\n", strerror(errno));
+  }
+}
+
+/* We replace the default YY_INPUT() for the following reasons:
+ *
+ * 1.  We want to read data as soon as it becomes available, but the default
+ * YY_INPUT() uses buffered I/O.
+ *
+ * 2.  We want to block on end of input and wait for the file to grow.
+ *
+ * 3.  We want to detect log rotation, and reopen the input file as needed.
+ */
+void WarnInput(char *buf, yy_size_t *result, size_t max_size) {
+  while (1) {
+    ssize_t ret = read(yyin_fd, buf, max_size);
+    if (ret < 0)
+      Die("read: %s", strerror(errno));
+    *result = ret;
+    if (*result > 0 || fifo || filter)
+      return;
+    if (draining) {
+      /* Assume we're done with this log, and move to next
+       * log.  Rsyslogd may keep writing to the old log file
+       * for a while, but we don't care since we don't have
+       * to be exact.
+       */
+      close(yyin_fd);
+      if (YYSTATE == WARN) {
+        /* Be conservative in case we lose the warn
+         * terminator during the switch---or we may
+         * collect personally identifiable information.
+         */
+        WarnEnd();
+      }
+      BEGIN(0);        /* see above comment */
+      sleep(1);        /* avoid race with log rotator */
+      WarnOpenInput(msg_path);
+      draining = 0;
+      continue;
+    }
+    /* Nothing left to read, so we must wait. */
+    struct inotify_event event;
+    while (1) {
+      int n = read(i_fd, &event, sizeof(event));
+      if (n <= 0) {
+        if (errno == EINTR)
+          continue;
+        else
+          Die("inotify: %s\n", strerror(errno));
+      } else
+        break;
+    }
+    if (event.mask & IN_MOVE_SELF) {
+      /* The file has been renamed.  Before switching
+       * to the new one, we process any remaining
+       * content of this file.
+       */
+      draining = 1;
+    }
+  }
+}
+
+int main(int argc, char **argv) {
+  int result;
+  struct passwd *user;
+  prog_name = argv[0];
+
+  if (argc == 2 && strcmp(argv[1], "--test") == 0)
+    testing = 1;
+  else if (argc == 2 && strcmp(argv[1], "--filter") == 0)
+    filter = 1;
+  else if (argc == 2 && strcmp(argv[1], "--fifo") == 0) {
+    fifo = 1;
+  } else if (argc != 1) {
+    fprintf(stderr,
+            "usage: %s [single-flag]\n"
+            "flags (for testing only):\n"
+            "--fifo\tinput is fifo \"fifo\", output is stdout\n"
+            "--filter\tinput is stdin, output is stdout\n"
+            "--test\trun self-test\n",
+            prog_name);
+    exit(1);
+  }
+
+  metrics_library = CMetricsLibraryNew();
+  CMetricsLibraryInit(metrics_library);
+
+  crash_reporter_command = testing ?
+    "./warn_collector_test_reporter.sh" :
+    "/sbin/crash_reporter --kernel_warning";
+
+  /* When filtering with --filter (for development) use stdin for input.
+   * Otherwise read input from a file or a fifo.
+   */
+  yyin_fd = fileno(stdin);
+  if (testing) {
+    msg_path = "messages";
+    warn_dump_path = "warning";
+  }
+  if (fifo) {
+    msg_path = "fifo";
+  }
+  if (!filter) {
+    WarnOpenInput(msg_path);
+  }
+
+  /* Create directory for dump file.  Still need to be root here. */
+  unlink(warn_dump_path);
+  if (!testing && !fifo && !filter) {
+    rmdir(warn_dump_dir);
+    result = mkdir(warn_dump_dir, 0755);
+    if (result < 0)
+      Die("could not create %s: %s\n",
+          warn_dump_dir, strerror(errno));
+  }
+
+  if (0) {
+    /* TODO(semenzato): put this back in once we decide it's safe
+     * to make /var/spool/crash rwxrwxrwx root, or use a different
+     * owner and setuid for the crash reporter as well.
+     */
+
+    /* Get low privilege uid, gid. */
+    user = getpwnam("chronos");
+    if (user == NULL)
+      Die("getpwnam failed\n");
+
+    /* Change dump directory ownership. */
+    if (chown(warn_dump_dir, user->pw_uid, user->pw_gid) < 0)
+      Die("chown: %s\n", strerror(errno));
+
+    /* Drop privileges. */
+    if (setuid(user->pw_uid) < 0) {
+      Die("setuid: %s\n", strerror(errno));
+    }
+  }
+
+  /* Go! */
+  return yylex();
+}
+
+/* Flex should really know not to generate these functions.
+ */
+void UnusedFunctionWarningSuppressor(void) {
+  yyunput(0, 0);
+}
diff --git a/crash_reporter/warn_collector_test.c b/crash_reporter/warn_collector_test.c
new file mode 100644
index 0000000..7e25d01
--- /dev/null
+++ b/crash_reporter/warn_collector_test.c
@@ -0,0 +1,14 @@
+/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+/*
+ * Test driver for the warn_collector daemon.
+ */
+#include <stdlib.h>
+
+int main(int ac, char **av) {
+  int status = system("exec \"${SRC}\"/warn_collector_test.sh");
+  return status < 0 ? EXIT_FAILURE : WEXITSTATUS(status);
+}
diff --git a/crash_reporter/warn_collector_test.sh b/crash_reporter/warn_collector_test.sh
new file mode 100755
index 0000000..d9bb6f9
--- /dev/null
+++ b/crash_reporter/warn_collector_test.sh
@@ -0,0 +1,79 @@
+#! /bin/bash
+# Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# Test for warn_collector.  Run the warn collector in the background, emulate
+# the kernel by appending lines to the log file "messages", and observe the log
+# of the (fake) crash reporter each time is run by the warn collector daemon.
+
+set -e
+
+fail() {
+  printf '[ FAIL ] %b\n' "$*"
+  exit 1
+}
+
+if [[ -z ${SYSROOT} ]]; then
+  fail "SYSROOT must be set for this test to work"
+fi
+: ${OUT:=${PWD}}
+cd "${OUT}"
+PATH=${OUT}:${PATH}
+TESTLOG="${OUT}/warn-test-log"
+
+echo "Testing: $(which warn_collector)"
+
+cleanup() {
+  # Kill daemon (if started) on exit
+  kill %
+}
+
+check_log() {
+  local n_expected=$1
+  if [[ ! -f ${TESTLOG} ]]; then
+    fail "${TESTLOG} was not created"
+  fi
+  if [[ $(wc -l < "${TESTLOG}") -ne ${n_expected} ]]; then
+    fail "expected ${n_expected} lines in ${TESTLOG}, found this instead:
+$(<"${TESTLOG}")"
+  fi
+  if egrep -qv '^[0-9a-f]{8}' "${TESTLOG}"; then
+    fail "found bad lines in ${TESTLOG}:
+$(<"${TESTLOG}")"
+  fi
+}
+
+rm -f "${TESTLOG}"
+cp "${SRC}/warn_collector_test_reporter.sh" .
+cp "${SRC}/TEST_WARNING" .
+cp TEST_WARNING messages
+
+# Start the collector daemon.  With the --test option, the daemon reads input
+# from ./messages, writes the warning into ./warning, and invokes
+# ./warn_collector_test_reporter.sh to report the warning.
+warn_collector --test &
+trap cleanup EXIT
+
+# After a while, check that the first warning has been collected.
+sleep 1
+check_log 1
+
+# Add the same warning to messages, verify that it is NOT collected
+cat TEST_WARNING >> messages
+sleep 1
+check_log 1
+
+# Add a slightly different warning to messages, check that it is collected.
+sed s/intel_dp.c/intel_xx.c/ < TEST_WARNING >> messages
+sleep 1
+check_log 2
+
+# Emulate log rotation, add a warning, and check.
+mv messages messages.1
+sed s/intel_dp.c/intel_xy.c/ < TEST_WARNING > messages
+sleep 2
+check_log 3
+
+# Success!
+exit 0
diff --git a/crash_reporter/warn_collector_test_reporter.sh b/crash_reporter/warn_collector_test_reporter.sh
new file mode 100755
index 0000000..d8f3fad
--- /dev/null
+++ b/crash_reporter/warn_collector_test_reporter.sh
@@ -0,0 +1,16 @@
+#! /bin/sh
+# Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# Replacement for the crash reporter, for testing.  Log the first line of the
+# "warning" file, which by convention contains the warning hash, and remove the
+# file.
+
+set -e
+
+exec 1>> warn-test-log
+exec 2>> warn-test-log
+
+head -1 warning
+rm warning
diff --git a/debuggerd/crasher.c b/debuggerd/crasher.c
index af86fe9..b5064b4 100644
--- a/debuggerd/crasher.c
+++ b/debuggerd/crasher.c
@@ -157,12 +157,6 @@
     } else if (!strcmp(arg, "SIGFPE")) {
         raise(SIGFPE);
         return EXIT_SUCCESS;
-    } else if (!strcmp(arg, "SIGPIPE")) {
-        int pipe_fds[2];
-        pipe(pipe_fds);
-        close(pipe_fds[0]);
-        write(pipe_fds[1], "oops", 4);
-        return EXIT_SUCCESS;
     } else if (!strcmp(arg, "SIGTRAP")) {
         raise(SIGTRAP);
         return EXIT_SUCCESS;
@@ -189,7 +183,6 @@
     fprintf(stderr, "  LOG_ALWAYS_FATAL      call LOG_ALWAYS_FATAL\n");
     fprintf(stderr, "  LOG_ALWAYS_FATAL_IF   call LOG_ALWAYS_FATAL\n");
     fprintf(stderr, "  SIGFPE                cause a SIGFPE\n");
-    fprintf(stderr, "  SIGPIPE               cause a SIGPIPE\n");
     fprintf(stderr, "  SIGSEGV               cause a SIGSEGV at address 0x0 (synonym: crash)\n");
     fprintf(stderr, "  SIGSEGV-non-null      cause a SIGSEGV at a non-zero address\n");
     fprintf(stderr, "  SIGSEGV-unmapped      mmap/munmap a region of memory and then attempt to access it\n");
diff --git a/debuggerd/debuggerd.cpp b/debuggerd/debuggerd.cpp
index 787b7aa..599995c 100644
--- a/debuggerd/debuggerd.cpp
+++ b/debuggerd/debuggerd.cpp
@@ -408,7 +408,6 @@
             case SIGBUS:
             case SIGFPE:
             case SIGILL:
-            case SIGPIPE:
             case SIGSEGV:
 #ifdef SIGSTKFLT
             case SIGSTKFLT:
diff --git a/debuggerd/test/tombstone_test.cpp b/debuggerd/test/tombstone_test.cpp
index a771a39..d945d27 100644
--- a/debuggerd/test/tombstone_test.cpp
+++ b/debuggerd/test/tombstone_test.cpp
@@ -76,7 +76,7 @@
     resetLogs();
     elf_set_fake_build_id("");
     siginfo_t si;
-    si.si_signo = SIGPIPE;
+    si.si_signo = SIGABRT;
     ptrace_set_fake_getsiginfo(si);
   }
 
diff --git a/debuggerd/tombstone.cpp b/debuggerd/tombstone.cpp
index 114c7e4..e283923 100644
--- a/debuggerd/tombstone.cpp
+++ b/debuggerd/tombstone.cpp
@@ -81,7 +81,6 @@
     case SIGBUS: return "SIGBUS";
     case SIGFPE: return "SIGFPE";
     case SIGILL: return "SIGILL";
-    case SIGPIPE: return "SIGPIPE";
     case SIGSEGV: return "SIGSEGV";
 #if defined(SIGSTKFLT)
     case SIGSTKFLT: return "SIGSTKFLT";
diff --git a/fastboot/fastboot.cpp b/fastboot/fastboot.cpp
index b964a36..5d7b151 100644
--- a/fastboot/fastboot.cpp
+++ b/fastboot/fastboot.cpp
@@ -189,25 +189,16 @@
     return load_fd(fd, _sz);
 }
 
-int match_fastboot_with_serial(usb_ifc_info *info, const char *local_serial)
-{
-    if(!(vendor_id && (info->dev_vendor == vendor_id)) &&
-       (info->dev_vendor != 0x18d1) &&  // Google
-       (info->dev_vendor != 0x8087) &&  // Intel
-       (info->dev_vendor != 0x0451) &&
-       (info->dev_vendor != 0x0502) &&
-       (info->dev_vendor != 0x0fce) &&  // Sony Ericsson
-       (info->dev_vendor != 0x05c6) &&  // Qualcomm
-       (info->dev_vendor != 0x22b8) &&  // Motorola
-       (info->dev_vendor != 0x0955) &&  // Nvidia
-       (info->dev_vendor != 0x413c) &&  // DELL
-       (info->dev_vendor != 0x2314) &&  // INQ Mobile
-       (info->dev_vendor != 0x0b05) &&  // Asus
-       (info->dev_vendor != 0x0bb4))    // HTC
-            return -1;
-    if(info->ifc_class != 0xff) return -1;
-    if(info->ifc_subclass != 0x42) return -1;
-    if(info->ifc_protocol != 0x03) return -1;
+int match_fastboot_with_serial(usb_ifc_info* info, const char* local_serial) {
+    // Require a matching vendor id if the user specified one with -i.
+    if (vendor_id != 0  && info->dev_vendor != vendor_id) {
+        return -1;
+    }
+
+    if (info->ifc_class != 0xff || info->ifc_subclass != 0x42 || info->ifc_protocol != 0x03) {
+        return -1;
+    }
+
     // require matching serial number or device path if requested
     // at the command line with the -s option.
     if (local_serial && (strcmp(local_serial, info->serial_number) != 0 &&
diff --git a/fastboot/usb_linux.cpp b/fastboot/usb_linux.cpp
index 9078c8f..7b87907 100644
--- a/fastboot/usb_linux.cpp
+++ b/fastboot/usb_linux.cpp
@@ -26,29 +26,22 @@
  * SUCH DAMAGE.
  */
 
+#include <ctype.h>
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <pthread.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <unistd.h>
 #include <string.h>
-
 #include <sys/ioctl.h>
 #include <sys/stat.h>
 #include <sys/types.h>
-#include <dirent.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <pthread.h>
-#include <ctype.h>
+#include <unistd.h>
 
 #include <linux/usbdevice_fs.h>
-#include <linux/usbdevice_fs.h>
 #include <linux/version.h>
-#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 20)
 #include <linux/usb/ch9.h>
-#else
-#include <linux/usb_ch9.h>
-#endif
-#include <asm/byteorder.h>
 
 #include "fastboot.h"
 #include "usb.h"
@@ -69,9 +62,19 @@
 #define DBG1(x...)
 #endif
 
-/* The max bulk size for linux is 16384 which is defined
- * in drivers/usb/core/devio.c.
- */
+// Kernels before 3.3 have a 16KiB transfer limit. That limit was replaced
+// with a 16MiB global limit in 3.3, but each URB submitted required a
+// contiguous kernel allocation, so you would get ENOMEM if you tried to
+// send something larger than the biggest available contiguous kernel
+// memory region. 256KiB contiguous allocations are generally not reliable
+// on a device kernel that has been running for a while fragmenting its
+// memory, but that shouldn't be a problem for fastboot on the host.
+// In 3.6, the contiguous buffer limit was removed by allocating multiple
+// 16KiB chunks and having the USB driver stitch them back together while
+// transmitting using a scatter-gather list, so 256KiB bulk transfers should
+// be reliable.
+// 256KiB seems to work, but 1MiB bulk transfers lock up my z620 with a 3.13
+// kernel.
 #define MAX_USBFS_BULK_SIZE (16 * 1024)
 
 struct usb_handle
diff --git a/fastboot/usb_osx.cpp b/fastboot/usb_osx.cpp
index a959566..abd6eb9 100644
--- a/fastboot/usb_osx.cpp
+++ b/fastboot/usb_osx.cpp
@@ -75,7 +75,6 @@
     HRESULT result;
     SInt32 score;
     UInt8 interfaceNumEndpoints;
-    UInt8 endpoint;
     UInt8 configuration;
 
     // Placing the constant KIOUSBFindInterfaceDontCare into the following
@@ -182,7 +181,7 @@
 
         // Iterate over the endpoints for this interface and see if there
         // are any that do bulk in/out.
-        for (endpoint = 0; endpoint <= interfaceNumEndpoints; endpoint++) {
+        for (UInt8 endpoint = 0; endpoint <= interfaceNumEndpoints; endpoint++) {
             UInt8   transferType;
             UInt16  maxPacketSize;
             UInt8   interval;
@@ -210,7 +209,7 @@
                     handle->zero_mask = maxPacketSize - 1;
                 }
             } else {
-                ERR("could not get pipe properties\n");
+                ERR("could not get pipe properties for endpoint %u (%08x)\n", endpoint, kr);
             }
 
             if (handle->info.has_bulk_in && handle->info.has_bulk_out) {
diff --git a/fs_mgr/fs_mgr.c b/fs_mgr/fs_mgr.c
index 42f25c7..459daec 100644
--- a/fs_mgr/fs_mgr.c
+++ b/fs_mgr/fs_mgr.c
@@ -162,10 +162,10 @@
     } else if (!strcmp(fs_type, "f2fs")) {
             char *f2fs_fsck_argv[] = {
                     F2FS_FSCK_BIN,
-                    "-f",
+                    "-a",
                     blk_device
             };
-        INFO("Running %s -f %s\n", F2FS_FSCK_BIN, blk_device);
+        INFO("Running %s -a %s\n", F2FS_FSCK_BIN, blk_device);
 
         ret = android_fork_execvp_ext(ARRAY_SIZE(f2fs_fsck_argv), f2fs_fsck_argv,
                                       &status, true, LOG_KLOG | LOG_FILE,
@@ -524,6 +524,14 @@
             continue;
         }
 
+        /* Skip mounting the root partition, as it will already have been mounted */
+        if (!strcmp(fstab->recs[i].mount_point, "/")) {
+            if ((fstab->recs[i].fs_mgr_flags & MS_RDONLY) != 0) {
+                fs_mgr_set_blk_ro(fstab->recs[i].blk_device);
+            }
+            continue;
+        }
+
         /* Translate LABEL= file system labels into block devices */
         if (!strcmp(fstab->recs[i].fs_type, "ext2") ||
             !strcmp(fstab->recs[i].fs_type, "ext3") ||
diff --git a/gpttool/Android.mk b/gpttool/Android.mk
deleted file mode 100644
index 64ad945..0000000
--- a/gpttool/Android.mk
+++ /dev/null
@@ -1,14 +0,0 @@
-ifeq ($(HOST_OS),linux)
-
-LOCAL_PATH:= $(call my-dir)
-include $(CLEAR_VARS)
-
-LOCAL_SRC_FILES := gpttool.c
-LOCAL_STATIC_LIBRARIES := libz
-LOCAL_CFLAGS := -Werror
-
-LOCAL_MODULE := gpttool
-
-include $(BUILD_HOST_EXECUTABLE)
-
-endif
diff --git a/gpttool/gpttool.c b/gpttool/gpttool.c
deleted file mode 100644
index 398362f..0000000
--- a/gpttool/gpttool.c
+++ /dev/null
@@ -1,373 +0,0 @@
-/*
-** Copyright 2011, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-**     http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/ioctl.h>
-#include <sys/stat.h>
-#include <unistd.h>
-
-#include <zlib.h>
-
-#include <linux/fs.h>
-
-typedef unsigned char u8;
-typedef unsigned short u16;
-typedef unsigned int u32;
-typedef unsigned long long u64;
-
-const u8 partition_type_uuid[16] = {
-	0xa2, 0xa0, 0xd0, 0xeb, 0xe5, 0xb9, 0x33, 0x44,
-	0x87, 0xc0, 0x68, 0xb6, 0xb7, 0x26, 0x99, 0xc7,
-};
-
-
-#define EFI_VERSION 0x00010000
-#define EFI_MAGIC "EFI PART"
-#define EFI_ENTRIES 128
-#define EFI_NAMELEN 36
-
-struct efi_header {
-	u8 magic[8];
-
-	u32 version;
-	u32 header_sz;
-
-	u32 crc32;
-	u32 reserved;
-
-	u64 header_lba;
-	u64 backup_lba;
-	u64 first_lba;
-	u64 last_lba;
-
-	u8 volume_uuid[16];
-
-	u64 entries_lba;
-
-	u32 entries_count;
-	u32 entries_size;
-	u32 entries_crc32;
-} __attribute__((packed));
-
-struct efi_entry {
-	u8 type_uuid[16];
-	u8 uniq_uuid[16];
-	u64 first_lba;
-	u64 last_lba;
-	u64 attr;
-	u16 name[EFI_NAMELEN];
-};
-
-struct ptable {
-	u8 mbr[512];
-	union {
-		struct efi_header header;
-		u8 block[512];
-	};
-	struct efi_entry entry[EFI_ENTRIES];	
-};
-
-void get_uuid(u8 *uuid)
-{
-	int fd;
-	fd = open("/dev/urandom", O_RDONLY);
-	read(fd, uuid, 16);
-	close(fd);
-}
-
-void init_mbr(u8 *mbr, u32 blocks)
-{
-	mbr[0x1be] = 0x00; // nonbootable
-	mbr[0x1bf] = 0xFF; // bogus CHS
-	mbr[0x1c0] = 0xFF;
-	mbr[0x1c1] = 0xFF;
-
-	mbr[0x1c2] = 0xEE; // GPT partition
-	mbr[0x1c3] = 0xFF; // bogus CHS
-	mbr[0x1c4] = 0xFF;
-	mbr[0x1c5] = 0xFF;
-
-	mbr[0x1c6] = 0x01; // start
-	mbr[0x1c7] = 0x00;
-	mbr[0x1c8] = 0x00;
-	mbr[0x1c9] = 0x00;
-
-	memcpy(mbr + 0x1ca, &blocks, sizeof(u32));
-
-	mbr[0x1fe] = 0x55;
-	mbr[0x1ff] = 0xaa;
-}
-
-int add_ptn(struct ptable *ptbl, u64 first, u64 last, const char *name)
-{
-	struct efi_header *hdr = &ptbl->header;
-	struct efi_entry *entry = ptbl->entry;
-	unsigned n;
-
-	if (first < 34) {
-		fprintf(stderr,"partition '%s' overlaps partition table\n", name);
-		return -1;
-	}
-
-	if (last > hdr->last_lba) {
-		fprintf(stderr,"partition '%s' does not fit on disk\n", name);
-		return -1;
-	}
-	for (n = 0; n < EFI_ENTRIES; n++, entry++) {
-		if (entry->type_uuid[0])
-			continue;
-		memcpy(entry->type_uuid, partition_type_uuid, 16);
-		get_uuid(entry->uniq_uuid);
-		entry->first_lba = first;
-		entry->last_lba = last;
-		for (n = 0; (n < EFI_NAMELEN) && *name; n++)
-			entry->name[n] = *name++;
-		return 0;
-	}
-	fprintf(stderr,"out of partition table entries\n");
-	return -1;
-}
-
-int usage(void)
-{
-	fprintf(stderr,
-		"usage: gpttool write <disk> [ <partition> ]*\n"
-		"       gpttool read <disk>\n"
-		"       gpttool test [ <partition> ]*\n"
-		"\n"
-		"partition:  [<name>]:<size>[kmg] | @<file-of-partitions>\n"
-		);
-	return 0;
-}
-
-void show(struct ptable *ptbl)
-{
-	struct efi_entry *entry = ptbl->entry;
-	unsigned n, m;
-	char name[EFI_NAMELEN + 1];
-
-	fprintf(stderr,"ptn  start block   end block     name\n");
-	fprintf(stderr,"---- ------------- ------------- --------------------\n");
-
-	for (n = 0; n < EFI_ENTRIES; n++, entry++) {
-		if (entry->type_uuid[0] == 0)
-			break;
-		for (m = 0; m < EFI_NAMELEN; m++) {
-			name[m] = entry->name[m] & 127;
-		}
-		name[m] = 0;
-		fprintf(stderr,"#%03d %13lld %13lld %s\n",
-			n + 1, entry->first_lba, entry->last_lba, name);
-	}
-}
-
-u64 find_next_lba(struct ptable *ptbl)
-{
-	struct efi_entry *entry = ptbl->entry;
-	unsigned n;
-	u64 a = 0;
-	for (n = 0; n < EFI_ENTRIES; n++, entry++) {
-		if ((entry->last_lba + 1) > a)
-			a = entry->last_lba + 1;
-	}
-	return a;
-}
-
-u64 next_lba = 0;
-
-u64 parse_size(char *sz)
-{
-	int l = strlen(sz);
-	u64 n = strtoull(sz, 0, 10);
-	if (l) {
-		switch(sz[l-1]){
-		case 'k':
-		case 'K':
-			n *= 1024;
-			break;
-		case 'm':
-		case 'M':
-			n *= (1024 * 1024);
-			break;
-		case 'g':
-		case 'G':
-			n *= (1024 * 1024 * 1024);
-			break;
-		}
-	}
-	return n;
-}
-
-int parse_ptn(struct ptable *ptbl, char *x)
-{
-	char *y = strchr(x, ':');
-	u64 sz;
-
-	if (!y) {
-		fprintf(stderr,"invalid partition entry: %s\n", x);
-		return -1;
-	}
-	*y++ = 0;
-
-	if (*y == 0) {
-		sz = ptbl->header.last_lba - next_lba;
-	} else {
-		sz = parse_size(y);
-		if (sz & 511) {
-			fprintf(stderr,"partition size must be multiple of 512\n");
-			return -1;
-		}
-		sz /= 512;
-	}
-
-	if (sz == 0) {
-		fprintf(stderr,"zero size partitions not allowed\n");
-		return -1;
-	}
-
-	if (x[0] && add_ptn(ptbl, next_lba, next_lba + sz - 1, x))
-		return -1;
-
-	next_lba = next_lba + sz;
-	return 0;
-}
-
-int main(int argc, char **argv)
-{
-	struct ptable ptbl;
-	struct efi_header *hdr = &ptbl.header;
-	u32 n;
-	u64 sz;
-	int fd;
-	const char *device;
-	int real_disk = 0;
-
-	if (argc < 2)
-		return usage();
-
-	if (!strcmp(argv[1], "write")) {
-		if (argc < 3)
-			return usage();
-		device = argv[2];
-		argc -= 2;
-		argv += 2;
-		real_disk = 1;
-	} else if (!strcmp(argv[1], "test")) {
-		argc -= 1;
-		argv += 1;
-		real_disk = 0;
-		sz = 2097152 * 16;
-		fprintf(stderr,"< simulating 16GB disk >\n\n");
-	} else {
-		return usage();
-	}
-
-	if (real_disk) {
-		if (!strcmp(device, "/dev/sda") || 
-		    !strcmp(device, "/dev/sdb")) {
-			fprintf(stderr,"error: refusing to partition sda or sdb\n");
-			return -1;
-		}
-		
-		fd = open(device, O_RDWR);
-		if (fd < 0) {
-			fprintf(stderr,"error: cannot open '%s'\n", device);
-			return -1;
-		}
-		if (ioctl(fd, BLKGETSIZE64, &sz)) {
-			fprintf(stderr,"error: cannot query block device size\n");
-			return -1;
-		}
-		sz /= 512;
-		fprintf(stderr,"blocks %lld\n", sz);
-	}
-
-	memset(&ptbl, 0, sizeof(ptbl));
-
-	init_mbr(ptbl.mbr, sz - 1);
-
-	memcpy(hdr->magic, EFI_MAGIC, sizeof(hdr->magic));
-	hdr->version = EFI_VERSION;
-	hdr->header_sz = sizeof(struct efi_header);
-	hdr->header_lba = 1;
-	hdr->backup_lba = sz - 1;
-	hdr->first_lba = 34;
-	hdr->last_lba = sz - 1;
-	get_uuid(hdr->volume_uuid);
-	hdr->entries_lba = 2;
-	hdr->entries_count = 128;
-	hdr->entries_size = sizeof(struct efi_entry);
-
-	while (argc > 1) {
-		if (argv[1][0] == '@') {
-			char line[256], *p;
-			FILE *f;
-			f = fopen(argv[1] + 1, "r");
-			if (!f) {
-				fprintf(stderr,"cannot read partitions from '%s\n", argv[1]);
-				return -1;
-			}
-			while (fgets(line, sizeof(line), f)) {
-				p = line + strlen(line);
-				while (p > line) {
-					p--;
-					if (*p > ' ')
-						break;
-					*p = 0;
-				}
-				p = line;
-				while (*p && (*p <= ' '))
-					p++;
-				if (*p == '#')
-					continue;
-				if (*p == 0)
-					continue;
-				if (parse_ptn(&ptbl, p))
-					return -1;
-			}
-			fclose(f);
-		} else {	
-			if (parse_ptn(&ptbl, argv[1]))
-				return -1;
-		}
-		argc--;
-		argv++;
-	}
-
-	n = crc32(0, Z_NULL, 0);
-	n = crc32(n, (void*) ptbl.entry, sizeof(ptbl.entry));
-	hdr->entries_crc32 = n;
-
-	n = crc32(0, Z_NULL, 0);
-	n = crc32(n, (void*) &ptbl.header, sizeof(ptbl.header));
-	hdr->crc32 = n;
-
-	show(&ptbl);
-
-	if (real_disk) {
-  		write(fd, &ptbl, sizeof(ptbl));
-		fsync(fd);
-
-		if (ioctl(fd, BLKRRPART, 0)) {
-			fprintf(stderr,"could not re-read partition table\n");
-		}
-		close(fd);
-	}
-	return 0;
-}
diff --git a/healthd/BatteryMonitor.cpp b/healthd/BatteryMonitor.cpp
index 7ea8250..ed773d0 100644
--- a/healthd/BatteryMonitor.cpp
+++ b/healthd/BatteryMonitor.cpp
@@ -24,11 +24,13 @@
 #include <fcntl.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <sys/types.h>
 #include <unistd.h>
+
 #include <batteryservice/BatteryService.h>
 #include <cutils/klog.h>
 #include <cutils/properties.h>
-#include <sys/types.h>
+#include <log/log_read.h>
 #include <utils/Errors.h>
 #include <utils/String8.h>
 #include <utils/Vector.h>
@@ -265,10 +267,32 @@
                  "battery none");
         }
 
-        KLOG_WARNING(LOG_TAG, "%s chg=%s%s%s\n", dmesgline,
-                     props.chargerAcOnline ? "a" : "",
-                     props.chargerUsbOnline ? "u" : "",
-                     props.chargerWirelessOnline ? "w" : "");
+        size_t len = strlen(dmesgline);
+        snprintf(dmesgline + len, sizeof(dmesgline) - len, " chg=%s%s%s",
+                 props.chargerAcOnline ? "a" : "",
+                 props.chargerUsbOnline ? "u" : "",
+                 props.chargerWirelessOnline ? "w" : "");
+
+        log_time realtime(CLOCK_REALTIME);
+        time_t t = realtime.tv_sec;
+        struct tm *tmp = gmtime(&t);
+        if (tmp) {
+            static const char fmt[] = " %Y-%m-%d %H:%M:%S.XXXXXXXXX UTC";
+            len = strlen(dmesgline);
+            if ((len < (sizeof(dmesgline) - sizeof(fmt) - 8)) // margin
+                    && strftime(dmesgline + len, sizeof(dmesgline) - len,
+                                fmt, tmp)) {
+                char *usec = strchr(dmesgline + len, 'X');
+                if (usec) {
+                    len = usec - dmesgline;
+                    snprintf(dmesgline + len, sizeof(dmesgline) - len,
+                             "%09u", realtime.tv_nsec);
+                    usec[9] = ' ';
+                }
+            }
+        }
+
+        KLOG_WARNING(LOG_TAG, "%s\n", dmesgline);
     }
 
     healthd_mode_ops->battery_update(&props);
diff --git a/include/cutils/android_reboot.h b/include/cutils/android_reboot.h
index 85e1b7e..a3861a0 100644
--- a/include/cutils/android_reboot.h
+++ b/include/cutils/android_reboot.h
@@ -17,6 +17,8 @@
 #ifndef __CUTILS_ANDROID_REBOOT_H__
 #define __CUTILS_ANDROID_REBOOT_H__
 
+#include <mntent.h>
+
 __BEGIN_DECLS
 
 /* Commands */
@@ -28,6 +30,9 @@
 #define ANDROID_RB_PROPERTY "sys.powerctl"
 
 int android_reboot(int cmd, int flags, const char *arg);
+int android_reboot_with_callback(
+    int cmd, int flags, const char *arg,
+    void (*cb_on_remount)(const struct mntent*));
 
 __END_DECLS
 
diff --git a/include/cutils/sockets.h b/include/cutils/sockets.h
index f8076ca..2d3c743 100644
--- a/include/cutils/sockets.h
+++ b/include/cutils/sockets.h
@@ -23,7 +23,7 @@
 #include <string.h>
 #include <stdbool.h>
 
-#ifdef HAVE_WINSOCK
+#if defined(_WIN32)
 #include <winsock2.h>
 typedef int  socklen_t;
 #else
@@ -77,7 +77,7 @@
 extern int socket_loopback_client(int port, int type);
 extern int socket_network_client(const char *host, int port, int type);
 extern int socket_network_client_timeout(const char *host, int port, int type,
-                                         int timeout);
+                                         int timeout, int* getaddrinfo_error);
 extern int socket_loopback_server(int port, int type);
 extern int socket_local_server(const char *name, int namespaceId, int type);
 extern int socket_local_server_bind(int s, const char *name, int namespaceId);
diff --git a/include/cutils/trace.h b/include/cutils/trace.h
index e4ed179..6d9b3bc 100644
--- a/include/cutils/trace.h
+++ b/include/cutils/trace.h
@@ -67,7 +67,8 @@
 #define ATRACE_TAG_RS               (1<<15)
 #define ATRACE_TAG_BIONIC           (1<<16)
 #define ATRACE_TAG_POWER            (1<<17)
-#define ATRACE_TAG_LAST             ATRACE_TAG_POWER
+#define ATRACE_TAG_PACKAGE_MANAGER  (1<<18)
+#define ATRACE_TAG_LAST             ATRACE_TAG_PACKAGE_MANAGER
 
 // Reserved for initialization.
 #define ATRACE_TAG_NOT_READY        (1LL<<63)
diff --git a/include/private/android_filesystem_config.h b/include/private/android_filesystem_config.h
index 02fe2b5..7047e0f 100644
--- a/include/private/android_filesystem_config.h
+++ b/include/private/android_filesystem_config.h
@@ -26,7 +26,7 @@
 #include <sys/types.h>
 #include <stdint.h>
 
-#ifdef HAVE_ANDROID_OS
+#if defined(__ANDROID__)
 #include <linux/capability.h>
 #else
 #include "android_filesystem_capability.h"
@@ -77,6 +77,7 @@
 #define AID_SDCARD_ALL    1035  /* access all users external storage */
 #define AID_LOGD          1036  /* log daemon */
 #define AID_SHARED_RELRO  1037  /* creator of shared GNU RELRO files */
+#define AID_DBUS          1038  /* dbus-daemon IPC broker process */
 
 #define AID_SHELL         2000  /* adb and debug shell user */
 #define AID_CACHE         2001  /* cache access */
@@ -98,6 +99,10 @@
 #define AID_NET_BW_ACCT   3007  /* change bandwidth statistics accounting */
 #define AID_NET_BT_STACK  3008  /* bluetooth: access config files */
 
+/* The range 5000-5999 is also reserved for OEM, and must never be used here. */
+#define AID_OEM_RESERVED_2_START 5000
+#define AID_OEM_RESERVED_2_END   5999
+
 #define AID_EVERYBODY     9997  /* shared between all apps in the same profile */
 #define AID_MISC          9998  /* access to misc storage */
 #define AID_NOBODY        9999
@@ -168,6 +173,7 @@
     { "sdcard_all",    AID_SDCARD_ALL, },
     { "logd",          AID_LOGD, },
     { "shared_relro",  AID_SHARED_RELRO, },
+    { "dbus",          AID_DBUS, },
 
     { "shell",         AID_SHELL, },
     { "cache",         AID_CACHE, },
diff --git a/include/utils/AndroidThreads.h b/include/utils/AndroidThreads.h
index aad1e82..4c2dd49 100644
--- a/include/utils/AndroidThreads.h
+++ b/include/utils/AndroidThreads.h
@@ -73,7 +73,7 @@
 // ------------------------------------------------------------------
 // Extra functions working with raw pids.
 
-#ifdef HAVE_ANDROID_OS
+#if defined(__ANDROID__)
 // Change the priority AND scheduling group of a particular thread.  The priority
 // should be one of the ANDROID_PRIORITY constants.  Returns INVALID_OPERATION
 // if the priority set failed, else another value if just the group set failed;
diff --git a/include/utils/ByteOrder.h b/include/utils/ByteOrder.h
index baa3a83..44ea13d 100644
--- a/include/utils/ByteOrder.h
+++ b/include/utils/ByteOrder.h
@@ -21,7 +21,7 @@
 
 #include <stdint.h>
 #include <sys/types.h>
-#ifdef HAVE_WINSOCK
+#if defined(_WIN32)
 #include <winsock2.h>
 #else
 #include <netinet/in.h>
diff --git a/include/utils/Compat.h b/include/utils/Compat.h
index 7d96310..c5f9d6a 100644
--- a/include/utils/Compat.h
+++ b/include/utils/Compat.h
@@ -75,4 +75,10 @@
     _rc; })
 #endif
 
+#if defined(_WIN32)
+#define OS_PATH_SEPARATOR '\\'
+#else
+#define OS_PATH_SEPARATOR '/'
+#endif
+
 #endif /* __LIB_UTILS_COMPAT_H */
diff --git a/include/utils/Errors.h b/include/utils/Errors.h
index 46173db..9402614 100644
--- a/include/utils/Errors.h
+++ b/include/utils/Errors.h
@@ -58,7 +58,6 @@
     ALREADY_EXISTS      = -EEXIST,
     DEAD_OBJECT         = -EPIPE,
     FAILED_TRANSACTION  = (UNKNOWN_ERROR + 2),
-    JPARKS_BROKE_IT     = -EPIPE,
 #if !defined(HAVE_MS_C_RUNTIME)
     BAD_INDEX           = -EOVERFLOW,
     NOT_ENOUGH_DATA     = -ENODATA,
diff --git a/include/utils/FileMap.h b/include/utils/FileMap.h
index f70fc92..afd7bfd 100644
--- a/include/utils/FileMap.h
+++ b/include/utils/FileMap.h
@@ -26,7 +26,7 @@
 
 #if defined(__MINGW32__)
 // Ensure that we always pull in winsock2.h before windows.h
-#ifdef HAVE_WINSOCK
+#if defined(_WIN32)
 #include <winsock2.h>
 #endif
 #include <windows.h>
diff --git a/include/utils/Mutex.h b/include/utils/Mutex.h
index 757519b..f027c79 100644
--- a/include/utils/Mutex.h
+++ b/include/utils/Mutex.h
@@ -59,7 +59,7 @@
     // lock if possible; returns 0 on success, error otherwise
     status_t    tryLock();
 
-#if HAVE_ANDROID_OS
+#if defined(__ANDROID__)
     // lock the mutex, but don't wait longer than timeoutMilliseconds.
     // Returns 0 on success, TIMED_OUT for failure due to timeout expiration.
     //
@@ -128,7 +128,7 @@
 inline status_t Mutex::tryLock() {
     return -pthread_mutex_trylock(&mMutex);
 }
-#if HAVE_ANDROID_OS
+#if defined(__ANDROID__)
 inline status_t Mutex::timedLock(nsecs_t timeoutNs) {
     const struct timespec ts = {
         /* .tv_sec = */ static_cast<time_t>(timeoutNs / 1000000000),
diff --git a/include/utils/Thread.h b/include/utils/Thread.h
index 28839fd..1532b7e 100644
--- a/include/utils/Thread.h
+++ b/include/utils/Thread.h
@@ -70,7 +70,7 @@
     // Indicates whether this thread is running or not.
             bool        isRunning() const;
 
-#ifdef HAVE_ANDROID_OS
+#if defined(__ANDROID__)
     // Return the thread's kernel ID, same as the thread itself calling gettid(),
     // or -1 if the thread is not running.
             pid_t       getTid() const;
@@ -101,7 +101,7 @@
     volatile bool           mExitPending;
     volatile bool           mRunning;
             sp<Thread>      mHoldSelf;
-#ifdef HAVE_ANDROID_OS
+#if defined(__ANDROID__)
     // legacy for debugging, not used by getTid() as it is set by the child thread
     // and so is not initialized until the child reaches that point
             pid_t           mTid;
diff --git a/include/utils/Trace.h b/include/utils/Trace.h
index 6ee343d..6ba68f6 100644
--- a/include/utils/Trace.h
+++ b/include/utils/Trace.h
@@ -17,7 +17,7 @@
 #ifndef ANDROID_TRACE_H
 #define ANDROID_TRACE_H
 
-#ifdef HAVE_ANDROID_OS
+#if defined(__ANDROID__)
 
 #include <fcntl.h>
 #include <stdint.h>
@@ -59,11 +59,11 @@
 
 }; // namespace android
 
-#else // HAVE_ANDROID_OS
+#else // !__ANDROID__
 
 #define ATRACE_NAME(...)
 #define ATRACE_CALL()
 
-#endif // HAVE_ANDROID_OS
+#endif // __ANDROID__
 
 #endif // ANDROID_TRACE_H
diff --git a/include/ziparchive/zip_archive.h b/include/ziparchive/zip_archive.h
index 5ef2ab0..3591a6b 100644
--- a/include/ziparchive/zip_archive.h
+++ b/include/ziparchive/zip_archive.h
@@ -22,6 +22,7 @@
 
 #include <stdint.h>
 #include <string.h>
+#include <sys/cdefs.h>
 #include <sys/types.h>
 #include <utils/Compat.h>
 
diff --git a/init/Android.mk b/init/Android.mk
index 45b002d..58bff58 100644
--- a/init/Android.mk
+++ b/init/Android.mk
@@ -20,16 +20,40 @@
 
 # --
 
+# If building on Linux, then build unit test for the host.
+ifeq ($(HOST_OS),linux)
 include $(CLEAR_VARS)
 LOCAL_CPPFLAGS := $(init_cflags)
 LOCAL_SRC_FILES:= \
+    parser/tokenizer.cpp \
+
+LOCAL_MODULE := libinit_parser
+LOCAL_CLANG := true
+include $(BUILD_HOST_STATIC_LIBRARY)
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := init_parser_tests
+LOCAL_SRC_FILES := \
+    parser/tokenizer_test.cpp \
+
+LOCAL_STATIC_LIBRARIES := libinit_parser
+LOCAL_CLANG := true
+include $(BUILD_HOST_NATIVE_TEST)
+endif
+
+include $(CLEAR_VARS)
+LOCAL_CPPFLAGS := $(init_cflags)
+LOCAL_SRC_FILES:= \
+    action.cpp \
     init_parser.cpp \
     log.cpp \
     parser.cpp \
+    service.cpp \
     util.cpp \
 
 LOCAL_STATIC_LIBRARIES := libbase
 LOCAL_MODULE := libinit
+LOCAL_SANITIZE := integer
 LOCAL_CLANG := true
 include $(BUILD_STATIC_LIBRARY)
 
@@ -77,6 +101,7 @@
     ln -sf ../init $(TARGET_ROOT_OUT)/sbin/ueventd; \
     ln -sf ../init $(TARGET_ROOT_OUT)/sbin/watchdogd
 
+LOCAL_SANITIZE := integer
 LOCAL_CLANG := true
 include $(BUILD_EXECUTABLE)
 
@@ -94,5 +119,6 @@
     libbase \
 
 LOCAL_STATIC_LIBRARIES := libinit
+LOCAL_SANITIZE := integer
 LOCAL_CLANG := true
 include $(BUILD_NATIVE_TEST)
diff --git a/init/action.cpp b/init/action.cpp
new file mode 100644
index 0000000..2eb809e
--- /dev/null
+++ b/init/action.cpp
@@ -0,0 +1,378 @@
+/*
+ * 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 "action.h"
+
+#include <errno.h>
+
+#include <base/strings.h>
+#include <base/stringprintf.h>
+
+#include "error.h"
+#include "init_parser.h"
+#include "log.h"
+#include "property_service.h"
+#include "util.h"
+
+class Action::Command
+{
+public:
+    Command(int (*f)(const std::vector<std::string>& args),
+            const std::vector<std::string>& args,
+            const std::string& filename,
+            int line);
+
+    int InvokeFunc() const;
+    std::string BuildCommandString() const;
+    std::string BuildSourceString() const;
+
+private:
+    int (*func_)(const std::vector<std::string>& args);
+    const std::vector<std::string> args_;
+    const std::string filename_;
+    int line_;
+};
+
+Action::Command::Command(int (*f)(const std::vector<std::string>& args),
+                         const std::vector<std::string>& args,
+                         const std::string& filename,
+                         int line) :
+    func_(f), args_(args), filename_(filename), line_(line)
+{
+}
+
+int Action::Command::InvokeFunc() const
+{
+    std::vector<std::string> expanded_args;
+    expanded_args.resize(args_.size());
+    expanded_args[0] = args_[0];
+    for (std::size_t i = 1; i < args_.size(); ++i) {
+        if (expand_props(args_[i], &expanded_args[i]) == -1) {
+            ERROR("%s: cannot expand '%s'\n", args_[0].c_str(), args_[i].c_str());
+            return -EINVAL;
+        }
+    }
+
+    return func_(expanded_args);
+}
+
+std::string Action::Command::BuildCommandString() const
+{
+    return android::base::Join(args_, ' ');
+}
+
+std::string Action::Command::BuildSourceString() const
+{
+    if (!filename_.empty()) {
+        return android::base::StringPrintf(" (%s:%d)", filename_.c_str(), line_);
+    } else {
+        return std::string();
+    }
+}
+
+Action::Action()
+{
+}
+
+void Action::AddCommand(int (*f)(const std::vector<std::string>& args),
+                        const std::vector<std::string>& args,
+                        const std::string& filename, int line)
+{
+    Action::Command* cmd = new Action::Command(f, args, filename, line);
+    commands_.push_back(cmd);
+}
+
+std::size_t Action::NumCommands() const
+{
+    return commands_.size();
+}
+
+void Action::ExecuteOneCommand(std::size_t command) const
+{
+    ExecuteCommand(*commands_[command]);
+}
+
+void Action::ExecuteAllCommands() const
+{
+    for (const auto& c : commands_) {
+        ExecuteCommand(*c);
+    }
+}
+
+void Action::ExecuteCommand(const Command& command) const
+{
+    Timer t;
+    int result = command.InvokeFunc();
+
+    if (klog_get_level() >= KLOG_INFO_LEVEL) {
+        std::string trigger_name = BuildTriggersString();
+        std::string cmd_str = command.BuildCommandString();
+        std::string source = command.BuildSourceString();
+
+        INFO("Command '%s' action=%s%s returned %d took %.2fs\n",
+             cmd_str.c_str(), trigger_name.c_str(), source.c_str(),
+             result, t.duration());
+    }
+}
+
+bool Action::ParsePropertyTrigger(const std::string& trigger, std::string* err)
+{
+    const static std::string prop_str("property:");
+    std::string prop_name(trigger.substr(prop_str.length()));
+    size_t equal_pos = prop_name.find('=');
+    if (equal_pos == std::string::npos) {
+        *err = "property trigger found without matching '='";
+        return false;
+    }
+
+    std::string prop_value(prop_name.substr(equal_pos + 1));
+    prop_name.erase(equal_pos);
+
+    auto res = property_triggers_.emplace(prop_name, prop_value);
+    if (res.second == false) {
+        *err = "multiple property triggers found for same property";
+        return false;
+    }
+    return true;
+}
+
+bool Action::InitTriggers(const std::vector<std::string>& args, std::string* err)
+{
+    const static std::string prop_str("property:");
+    for (std::size_t i = 0; i < args.size(); ++i) {
+        if (i % 2) {
+            if (args[i].compare("&&")) {
+                *err = "&& is the only symbol allowed to concatenate actions";
+                return false;
+            } else {
+                continue;
+            }
+        }
+
+        if (!args[i].compare(0, prop_str.length(), prop_str)) {
+            if (!ParsePropertyTrigger(args[i], err)) {
+                return false;
+            }
+        } else {
+            if (!event_trigger_.empty()) {
+                *err = "multiple event triggers are not allowed";
+                return false;
+            }
+
+            event_trigger_ = args[i];
+        }
+    }
+
+    return true;
+}
+
+bool Action::InitSingleTrigger(const std::string& trigger)
+{
+    std::vector<std::string> name_vector{trigger};
+    std::string err;
+    return InitTriggers(name_vector, &err);
+}
+
+bool Action::CheckPropertyTriggers(const std::string& name,
+                                   const std::string& value) const
+{
+    bool found = !name.compare("");
+    if (property_triggers_.empty()) {
+        return true;
+    }
+
+    for (const auto& t : property_triggers_) {
+        if (!t.first.compare(name)) {
+            if (t.second.compare("*") &&
+                t.second.compare(value)) {
+                return false;
+            } else {
+                found = true;
+            }
+        } else {
+            std::string prop_val = property_get(t.first.c_str());
+            if (prop_val.empty() ||
+                (t.second.compare("*") &&
+                 t.second.compare(prop_val))) {
+                return false;
+            }
+        }
+    }
+    return found;
+}
+
+bool Action::CheckEventTrigger(const std::string& trigger) const
+{
+    return !event_trigger_.empty() &&
+        !trigger.compare(event_trigger_) &&
+        CheckPropertyTriggers();
+}
+
+bool Action::CheckPropertyTrigger(const std::string& name,
+                                  const std::string& value) const
+{
+    return event_trigger_.empty() && CheckPropertyTriggers(name, value);
+}
+
+bool Action::TriggersEqual(const class Action& other) const
+{
+    return property_triggers_.size() == other.property_triggers_.size() &&
+        std::equal(property_triggers_.begin(), property_triggers_.end(),
+                   other.property_triggers_.begin()) &&
+        !event_trigger_.compare(other.event_trigger_);
+}
+
+std::string Action::BuildTriggersString() const
+{
+    std::string result;
+
+    for (const auto& t : property_triggers_) {
+        result += t.first;
+        result += '=';
+        result += t.second;
+        result += ' ';
+    }
+    if (!event_trigger_.empty()) {
+        result += event_trigger_;
+        result += ' ';
+    }
+    result.pop_back();
+    return result;
+}
+
+void Action::DumpState() const
+{
+    INFO("on ");
+    std::string trigger_name = BuildTriggersString();
+    INFO("%s", trigger_name.c_str());
+    INFO("\n");
+
+    for (const auto& c : commands_) {
+        std::string cmd_str = c->BuildCommandString();
+        INFO(" %s", cmd_str.c_str());
+    }
+    INFO("\n");
+}
+
+ActionManager::ActionManager() : cur_command_(0)
+{
+}
+
+ActionManager& ActionManager::GetInstance() {
+    static ActionManager instance;
+    return instance;
+}
+
+void ActionManager::QueueEventTrigger(const std::string& trigger)
+{
+    for (const auto& a : action_list_) {
+        if (a->CheckEventTrigger(trigger)) {
+            action_queue_.push(a);
+        }
+    }
+}
+
+void ActionManager::QueuePropertyTrigger(const std::string& name,
+                                         const std::string& value)
+{
+    for (const auto& a : action_list_) {
+        if (a->CheckPropertyTrigger(name, value)) {
+            action_queue_.push(a);
+        }
+    }
+}
+
+void ActionManager::QueueAllPropertyTriggers()
+{
+    QueuePropertyTrigger("", "");
+}
+
+void ActionManager::QueueBuiltinAction(int (*func)(const std::vector<std::string>& args),
+                                       const std::string& name)
+{
+    Action* act = new Action();
+    std::vector<std::string> name_vector{name};
+
+    if (!act->InitSingleTrigger(name)) {
+        return;
+    }
+
+    act->AddCommand(func, name_vector);
+
+    action_queue_.push(act);
+}
+
+void ActionManager::ExecuteOneCommand() {
+    if (action_queue_.empty()) {
+        return;
+    }
+
+    Action* action = action_queue_.front();
+    if (!action->NumCommands()) {
+        action_queue_.pop();
+        return;
+    }
+
+    if (cur_command_ == 0) {
+        std::string trigger_name = action->BuildTriggersString();
+        INFO("processing action %p (%s)\n", action, trigger_name.c_str());
+    }
+
+    action->ExecuteOneCommand(cur_command_++);
+    if (cur_command_ == action->NumCommands()) {
+        cur_command_ = 0;
+        action_queue_.pop();
+    }
+}
+
+bool ActionManager::HasMoreCommands() const
+{
+    return !action_queue_.empty();
+}
+
+Action* ActionManager::AddNewAction(const std::vector<std::string>& triggers,
+                                    std::string* err)
+{
+    if (triggers.size() < 1) {
+        *err = "actions must have a trigger\n";
+        return nullptr;
+    }
+
+    Action* act = new Action();
+    if (!act->InitTriggers(triggers, err)) {
+        return nullptr;
+    }
+
+    auto old_act_it =
+        std::find_if(action_list_.begin(), action_list_.end(),
+                     [&act] (Action* a) { return act->TriggersEqual(*a); });
+
+    if (old_act_it != action_list_.end()) {
+        delete act;
+        return *old_act_it;
+    }
+
+    action_list_.push_back(act);
+    return act;
+}
+
+void ActionManager::DumpState() const
+{
+    for (const auto& a : action_list_) {
+        a->DumpState();
+    }
+    INFO("\n");
+}
diff --git a/init/action.h b/init/action.h
new file mode 100644
index 0000000..ae28fe1
--- /dev/null
+++ b/init/action.h
@@ -0,0 +1,82 @@
+/*
+ * 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 _INIT_ACTION_H
+#define _INIT_ACTION_H
+
+#include <map>
+#include <queue>
+#include <string>
+#include <vector>
+
+class Action {
+public:
+    Action();
+
+    void AddCommand(int (*f)(const std::vector<std::string>& args),
+                    const std::vector<std::string>& args,
+                    const std::string& filename = "", int line = 0);
+    bool InitTriggers(const std::vector<std::string>& args, std::string* err);
+    bool InitSingleTrigger(const std::string& trigger);
+    std::size_t NumCommands() const;
+    void ExecuteOneCommand(std::size_t command) const;
+    void ExecuteAllCommands() const;
+    bool CheckEventTrigger(const std::string& trigger) const;
+    bool CheckPropertyTrigger(const std::string& name,
+                              const std::string& value) const;
+    bool TriggersEqual(const class Action& other) const;
+    std::string BuildTriggersString() const;
+    void DumpState() const;
+
+private:
+    class Command;
+
+    void ExecuteCommand(const Command& command) const;
+    bool CheckPropertyTriggers(const std::string& name = "",
+                               const std::string& value = "") const;
+    bool ParsePropertyTrigger(const std::string& trigger, std::string* err);
+
+    std::map<std::string, std::string> property_triggers_;
+    std::string event_trigger_;
+    std::vector<Command*> commands_;
+};
+
+class ActionManager {
+public:
+    static ActionManager& GetInstance();
+    void QueueEventTrigger(const std::string& trigger);
+    void QueuePropertyTrigger(const std::string& name, const std::string& value);
+    void QueueAllPropertyTriggers();
+    void QueueBuiltinAction(int (*func)(const std::vector<std::string>& args),
+                            const std::string& name);
+    void ExecuteOneCommand();
+    bool HasMoreCommands() const;
+    Action* AddNewAction(const std::vector<std::string>& triggers,
+                         std::string* err);
+    void DumpState() const;
+
+private:
+    ActionManager();
+
+    ActionManager(ActionManager const&) = delete;
+    void operator=(ActionManager const&) = delete;
+
+    std::vector<Action*> action_list_;
+    std::queue<Action*> action_queue_;
+    std::size_t cur_command_;
+};
+
+#endif
diff --git a/init/bootchart.cpp b/init/bootchart.cpp
index 95687cb..efaee1c 100644
--- a/init/bootchart.cpp
+++ b/init/bootchart.cpp
@@ -77,8 +77,8 @@
         return;
     }
 
-    char fingerprint[PROP_VALUE_MAX];
-    if (property_get("ro.build.fingerprint", fingerprint) == -1) {
+    std::string fingerprint = property_get("ro.build.fingerprint");
+    if (fingerprint.empty()) {
         return;
     }
 
@@ -92,7 +92,7 @@
     fprintf(out, "version = Android init 0.8 " __TIME__  "\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);
+    fprintf(out, "system.release = %s\n", fingerprint.c_str());
     // TODO: use /proc/cpuinfo "model name" line for x86, "Processor" line for arm.
     fprintf(out, "system.cpu = %s\n", uts.machine);
     fprintf(out, "system.kernel.options = %s\n", kernel_cmdline.c_str());
@@ -164,10 +164,11 @@
         // timeout. this is useful when using -wipe-data since the /data
         // partition is fresh.
         std::string cmdline;
+        const char* s;
         android::base::ReadFileToString("/proc/cmdline", &cmdline);
 #define KERNEL_OPTION  "androidboot.bootchart="
-        if (strstr(cmdline.c_str(), KERNEL_OPTION) != NULL) {
-            timeout = atoi(cmdline.c_str() + sizeof(KERNEL_OPTION) - 1);
+        if ((s = strstr(cmdline.c_str(), KERNEL_OPTION)) != NULL) {
+            timeout = atoi(s + sizeof(KERNEL_OPTION) - 1);
         }
     }
     if (timeout == 0)
@@ -202,7 +203,7 @@
     return count;
 }
 
-int do_bootchart_init(int nargs, char** args) {
+int do_bootchart_init(const std::vector<std::string>& args) {
     g_remaining_samples = bootchart_init();
     if (g_remaining_samples < 0) {
         ERROR("Bootcharting init failure: %s\n", strerror(errno));
diff --git a/init/builtins.cpp b/init/builtins.cpp
index ca31c50..470437c 100644
--- a/init/builtins.cpp
+++ b/init/builtins.cpp
@@ -16,7 +16,9 @@
 
 #include <errno.h>
 #include <fcntl.h>
+#include <mntent.h>
 #include <net/if.h>
+#include <signal.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -38,33 +40,30 @@
 #include <base/stringprintf.h>
 #include <cutils/partition_utils.h>
 #include <cutils/android_reboot.h>
+#include <logwrap/logwrap.h>
 #include <private/android_filesystem_config.h>
 
-#include "init.h"
-#include "keywords.h"
-#include "property_service.h"
+#include "action.h"
 #include "devices.h"
+#include "init.h"
 #include "init_parser.h"
-#include "util.h"
+#include "keywords.h"
 #include "log.h"
+#include "property_service.h"
+#include "service.h"
+#include "util.h"
 
 #define chmod DO_NOT_USE_CHMOD_USE_FCHMODAT_SYMLINK_NOFOLLOW
-
-int add_environment(const char *name, const char *value);
+#define UNMOUNT_CHECK_MS 5000
+#define UNMOUNT_CHECK_TIMES 10
 
 // System call provided by bionic but not in any header file.
 extern "C" int init_module(void *, unsigned long, const char *);
 
-static int insmod(const char *filename, char *options)
+static int insmod(const char *filename, const char *options)
 {
-    char filename_val[PROP_VALUE_MAX];
-    if (expand_props(filename_val, filename, sizeof(filename_val)) == -1) {
-        ERROR("insmod: cannot expand '%s'\n", filename);
-        return -EINVAL;
-    }
-
     std::string module;
-    if (!read_file(filename_val, &module)) {
+    if (!read_file(filename, &module)) {
         return -1;
     }
 
@@ -100,154 +99,190 @@
     return ret;
 }
 
-static void service_start_if_not_disabled(struct service *svc)
+static void unmount_and_fsck(const struct mntent *entry)
 {
-    if (!(svc->flags & SVC_DISABLED)) {
-        service_start(svc, NULL);
-    } else {
-        svc->flags |= SVC_DISABLED_START;
+    if (strcmp(entry->mnt_type, "f2fs") && strcmp(entry->mnt_type, "ext4"))
+        return;
+
+    /* First, lazily unmount the directory. This unmount request finishes when
+     * all processes that open a file or directory in |entry->mnt_dir| exit.
+     */
+    TEMP_FAILURE_RETRY(umount2(entry->mnt_dir, MNT_DETACH));
+
+    /* Next, kill all processes except init, kthreadd, and kthreadd's
+     * children to finish the lazy unmount. Killing all processes here is okay
+     * because this callback function is only called right before reboot().
+     * It might be cleaner to selectively kill processes that actually use
+     * |entry->mnt_dir| rather than killing all, probably by reusing a function
+     * like killProcessesWithOpenFiles() in vold/, but the selinux policy does
+     * not allow init to scan /proc/<pid> files which the utility function
+     * heavily relies on. The policy does not allow the process to execute
+     * killall/pkill binaries either. Note that some processes might
+     * automatically restart after kill(), but that is not really a problem
+     * because |entry->mnt_dir| is no longer visible to such new processes.
+     */
+    ServiceManager::GetInstance().ForEachService([] (Service* s) { s->Stop(); });
+    TEMP_FAILURE_RETRY(kill(-1, SIGKILL));
+
+    int count = 0;
+    while (count++ < UNMOUNT_CHECK_TIMES) {
+        int fd = TEMP_FAILURE_RETRY(open(entry->mnt_fsname, O_RDONLY | O_EXCL));
+        if (fd >= 0) {
+            /* |entry->mnt_dir| has sucessfully been unmounted. */
+            close(fd);
+            break;
+        } else if (errno == EBUSY) {
+            /* Some processes using |entry->mnt_dir| are still alive. Wait for a
+             * while then retry.
+             */
+            TEMP_FAILURE_RETRY(
+                usleep(UNMOUNT_CHECK_MS * 1000 / UNMOUNT_CHECK_TIMES));
+            continue;
+        } else {
+            /* Cannot open the device. Give up. */
+            return;
+        }
+    }
+
+    int st;
+    if (!strcmp(entry->mnt_type, "f2fs")) {
+        const char *f2fs_argv[] = {
+            "/system/bin/fsck.f2fs", "-f", entry->mnt_fsname,
+        };
+        android_fork_execvp_ext(ARRAY_SIZE(f2fs_argv), (char **)f2fs_argv,
+                                &st, true, LOG_KLOG, true, NULL);
+    } else if (!strcmp(entry->mnt_type, "ext4")) {
+        const char *ext4_argv[] = {
+            "/system/bin/e2fsck", "-f", "-y", entry->mnt_fsname,
+        };
+        android_fork_execvp_ext(ARRAY_SIZE(ext4_argv), (char **)ext4_argv,
+                                &st, true, LOG_KLOG, true, NULL);
     }
 }
 
-int do_class_start(int nargs, char **args)
+int do_class_start(const std::vector<std::string>& args)
 {
         /* Starting a class does not start services
          * which are explicitly disabled.  They must
          * be started individually.
          */
-    service_for_each_class(args[1], service_start_if_not_disabled);
+    ServiceManager::GetInstance().
+        ForEachServiceInClass(args[1], [] (Service* s) { s->StartIfNotDisabled(); });
     return 0;
 }
 
-int do_class_stop(int nargs, char **args)
+int do_class_stop(const std::vector<std::string>& args)
 {
-    service_for_each_class(args[1], service_stop);
+    ServiceManager::GetInstance().
+        ForEachServiceInClass(args[1], [] (Service* s) { s->Stop(); });
     return 0;
 }
 
-int do_class_reset(int nargs, char **args)
+int do_class_reset(const std::vector<std::string>& args)
 {
-    service_for_each_class(args[1], service_reset);
+    ServiceManager::GetInstance().
+        ForEachServiceInClass(args[1], [] (Service* s) { s->Reset(); });
     return 0;
 }
 
-int do_domainname(int nargs, char **args)
+int do_domainname(const std::vector<std::string>& args)
 {
-    return write_file("/proc/sys/kernel/domainname", args[1]);
+    return write_file("/proc/sys/kernel/domainname", args[1].c_str());
 }
 
-int do_enable(int nargs, char **args)
+int do_enable(const std::vector<std::string>& args)
 {
-    struct service *svc;
-    svc = service_find_by_name(args[1]);
-    if (svc) {
-        svc->flags &= ~(SVC_DISABLED | SVC_RC_DISABLED);
-        if (svc->flags & SVC_DISABLED_START) {
-            service_start(svc, NULL);
-        }
-    } else {
+    Service* svc = ServiceManager::GetInstance().FindServiceByName(args[1]);
+    if (!svc) {
         return -1;
     }
-    return 0;
+    return svc->Enable();
 }
 
-int do_exec(int nargs, char** args) {
-    service* svc = make_exec_oneshot_service(nargs, args);
-    if (svc == NULL) {
+int do_exec(const std::vector<std::string>& args) {
+    Service* svc = ServiceManager::GetInstance().MakeExecOneshotService(args);
+    if (!svc) {
         return -1;
     }
-    service_start(svc, NULL);
+    if (!svc->Start()) {
+        return -1;
+    }
+    waiting_for_exec = true;
     return 0;
 }
 
-int do_export(int nargs, char **args)
+int do_export(const std::vector<std::string>& args)
 {
-    return add_environment(args[1], args[2]);
+    return add_environment(args[1].c_str(), args[2].c_str());
 }
 
-int do_hostname(int nargs, char **args)
+int do_hostname(const std::vector<std::string>& args)
 {
-    return write_file("/proc/sys/kernel/hostname", args[1]);
+    return write_file("/proc/sys/kernel/hostname", args[1].c_str());
 }
 
-int do_ifup(int nargs, char **args)
+int do_ifup(const std::vector<std::string>& args)
 {
-    return __ifupdown(args[1], 1);
+    return __ifupdown(args[1].c_str(), 1);
 }
 
-
-static int do_insmod_inner(int nargs, char **args, int opt_len)
+int do_insmod(const std::vector<std::string>& args)
 {
-    char options[opt_len + 1];
-    int i;
+    std::string options;
 
-    options[0] = '\0';
-    if (nargs > 2) {
-        strcpy(options, args[2]);
-        for (i = 3; i < nargs; ++i) {
-            strcat(options, " ");
-            strcat(options, args[i]);
+    if (args.size() > 2) {
+        options += args[2];
+        for (std::size_t i = 3; i < args.size(); ++i) {
+            options += ' ';
+            options += args[i];
         }
     }
 
-    return insmod(args[1], options);
+    return insmod(args[1].c_str(), options.c_str());
 }
 
-int do_insmod(int nargs, char **args)
-{
-    int i;
-    int size = 0;
-
-    if (nargs > 2) {
-        for (i = 2; i < nargs; ++i)
-            size += strlen(args[i]) + 1;
-    }
-
-    return do_insmod_inner(nargs, args, size);
-}
-
-int do_mkdir(int nargs, char **args)
+int do_mkdir(const std::vector<std::string>& args)
 {
     mode_t mode = 0755;
     int ret;
 
     /* mkdir <path> [mode] [owner] [group] */
 
-    if (nargs >= 3) {
-        mode = strtoul(args[2], 0, 8);
+    if (args.size() >= 3) {
+        mode = std::stoul(args[2], 0, 8);
     }
 
-    ret = make_dir(args[1], mode);
+    ret = make_dir(args[1].c_str(), mode);
     /* chmod in case the directory already exists */
     if (ret == -1 && errno == EEXIST) {
-        ret = fchmodat(AT_FDCWD, args[1], mode, AT_SYMLINK_NOFOLLOW);
+        ret = fchmodat(AT_FDCWD, args[1].c_str(), mode, AT_SYMLINK_NOFOLLOW);
     }
     if (ret == -1) {
         return -errno;
     }
 
-    if (nargs >= 4) {
-        uid_t uid = decode_uid(args[3]);
+    if (args.size() >= 4) {
+        uid_t uid = decode_uid(args[3].c_str());
         gid_t gid = -1;
 
-        if (nargs == 5) {
-            gid = decode_uid(args[4]);
+        if (args.size() == 5) {
+            gid = decode_uid(args[4].c_str());
         }
 
-        if (lchown(args[1], uid, gid) == -1) {
+        if (lchown(args[1].c_str(), uid, gid) == -1) {
             return -errno;
         }
 
         /* chown may have cleared S_ISUID and S_ISGID, chmod again */
         if (mode & (S_ISUID | S_ISGID)) {
-            ret = fchmodat(AT_FDCWD, args[1], mode, AT_SYMLINK_NOFOLLOW);
+            ret = fchmodat(AT_FDCWD, args[1].c_str(), mode, AT_SYMLINK_NOFOLLOW);
             if (ret == -1) {
                 return -errno;
             }
         }
     }
 
-    return e4crypt_set_directory_policy(args[1]);
+    return e4crypt_set_directory_policy(args[1].c_str());
 }
 
 static struct {
@@ -275,35 +310,36 @@
 #define DATA_MNT_POINT "/data"
 
 /* mount <type> <device> <path> <flags ...> <options> */
-int do_mount(int nargs, char **args)
+int do_mount(const std::vector<std::string>& args)
 {
     char tmp[64];
-    char *source, *target, *system;
-    char *options = NULL;
+    const char *source, *target, *system;
+    const char *options = NULL;
     unsigned flags = 0;
+    std::size_t na = 0;
     int n, i;
     int wait = 0;
 
-    for (n = 4; n < nargs; n++) {
+    for (na = 4; na < args.size(); na++) {
         for (i = 0; mount_flags[i].name; i++) {
-            if (!strcmp(args[n], mount_flags[i].name)) {
+            if (!args[na].compare(mount_flags[i].name)) {
                 flags |= mount_flags[i].flag;
                 break;
             }
         }
 
         if (!mount_flags[i].name) {
-            if (!strcmp(args[n], "wait"))
+            if (!args[na].compare("wait"))
                 wait = 1;
             /* if our last argument isn't a flag, wolf it up as an option string */
-            else if (n + 1 == nargs)
-                options = args[n];
+            else if (na + 1 == args.size())
+                options = args[na].c_str();
         }
     }
 
-    system = args[1];
-    source = args[2];
-    target = args[3];
+    system = args[1].c_str();
+    source = args[2].c_str();
+    target = args[3].c_str();
 
     if (!strncmp(source, "mtd@", 4)) {
         n = mtd_name_to_number(source + 4);
@@ -395,7 +431,7 @@
  * This function might request a reboot, in which case it will
  * not return.
  */
-int do_mount_all(int nargs, char **args)
+int do_mount_all(const std::vector<std::string>& args)
 {
     pid_t pid;
     int ret = -1;
@@ -403,10 +439,10 @@
     int status;
     struct fstab *fstab;
 
-    if (nargs != 2) {
+    if (args.size() != 2) {
         return -1;
     }
-
+    const char* fstabfile = args[1].c_str();
     /*
      * Call fs_mgr_mount_all() to mount all filesystems.  We fork(2) and
      * do the call in the child to provide protection to the main init
@@ -430,7 +466,7 @@
     } else if (pid == 0) {
         /* child, call fs_mgr_mount_all() */
         klog_set_level(6);  /* So we can see what fs_mgr_mount_all() does */
-        fstab = fs_mgr_read_fstab(args[1]);
+        fstab = fs_mgr_read_fstab(fstabfile);
         child_ret = fs_mgr_mount_all(fstab);
         fs_mgr_free_fstab(fstab);
         if (child_ret == -1) {
@@ -453,7 +489,7 @@
         /* If fs_mgr determined this is an unencrypted device, then trigger
          * that action.
          */
-        action_for_each_trigger("nonencrypted", action_add_queue_tail);
+        ActionManager::GetInstance().QueueEventTrigger("nonencrypted");
     } else if (ret == FS_MGR_MNTALL_DEV_NEEDS_RECOVERY) {
         /* Setup a wipe via recovery, and reboot into recovery */
         ERROR("fs_mgr_mount_all suggested recovery, so wiping data via recovery.\n");
@@ -468,7 +504,7 @@
 
         // Although encrypted, we have device key, so we do not need to
         // do anything different from the nonencrypted case.
-        action_for_each_trigger("nonencrypted", action_add_queue_tail);
+        ActionManager::GetInstance().QueueEventTrigger("nonencrypted");
     } else if (ret == FS_MGR_MNTALL_DEV_NON_DEFAULT_FILE_ENCRYPTED) {
         if (e4crypt_install_keyring()) {
             return -1;
@@ -484,87 +520,77 @@
     return ret;
 }
 
-int do_swapon_all(int nargs, char **args)
+int do_swapon_all(const std::vector<std::string>& args)
 {
     struct fstab *fstab;
     int ret;
 
-    fstab = fs_mgr_read_fstab(args[1]);
+    fstab = fs_mgr_read_fstab(args[1].c_str());
     ret = fs_mgr_swapon_all(fstab);
     fs_mgr_free_fstab(fstab);
 
     return ret;
 }
 
-int do_setprop(int nargs, char **args)
+int do_setprop(const std::vector<std::string>& args)
 {
-    const char *name = args[1];
-    const char *value = args[2];
-    char prop_val[PROP_VALUE_MAX];
-    int ret;
-
-    ret = expand_props(prop_val, value, sizeof(prop_val));
-    if (ret) {
-        ERROR("cannot expand '%s' while assigning to '%s'\n", value, name);
-        return -EINVAL;
-    }
-    property_set(name, prop_val);
+    const char* name = args[1].c_str();
+    const char* value = args[2].c_str();
+    property_set(name, value);
     return 0;
 }
 
-int do_setrlimit(int nargs, char **args)
+int do_setrlimit(const std::vector<std::string>& args)
 {
     struct rlimit limit;
     int resource;
-    resource = atoi(args[1]);
-    limit.rlim_cur = atoi(args[2]);
-    limit.rlim_max = atoi(args[3]);
+    resource = std::stoi(args[1]);
+    limit.rlim_cur = std::stoi(args[2]);
+    limit.rlim_max = std::stoi(args[3]);
     return setrlimit(resource, &limit);
 }
 
-int do_start(int nargs, char **args)
+int do_start(const std::vector<std::string>& args)
 {
-    struct service *svc;
-    svc = service_find_by_name(args[1]);
-    if (svc) {
-        service_start(svc, NULL);
+    Service* svc = ServiceManager::GetInstance().FindServiceByName(args[1]);
+    if (!svc) {
+        ERROR("do_start: Service %s not found\n", args[1].c_str());
+        return -1;
     }
+    if (!svc->Start())
+        return -1;
     return 0;
 }
 
-int do_stop(int nargs, char **args)
+int do_stop(const std::vector<std::string>& args)
 {
-    struct service *svc;
-    svc = service_find_by_name(args[1]);
-    if (svc) {
-        service_stop(svc);
+    Service* svc = ServiceManager::GetInstance().FindServiceByName(args[1]);
+    if (!svc) {
+        ERROR("do_stop: Service %s not found\n", args[1].c_str());
+        return -1;
     }
+    svc->Stop();
     return 0;
 }
 
-int do_restart(int nargs, char **args)
+int do_restart(const std::vector<std::string>& args)
 {
-    struct service *svc;
-    svc = service_find_by_name(args[1]);
-    if (svc) {
-        service_restart(svc);
+    Service* svc = ServiceManager::GetInstance().FindServiceByName(args[1]);
+    if (!svc) {
+        ERROR("do_restart: Service %s not found\n", args[1].c_str());
+        return -1;
     }
+    svc->Restart();
     return 0;
 }
 
-int do_powerctl(int nargs, char **args)
+int do_powerctl(const std::vector<std::string>& args)
 {
-    char command[PROP_VALUE_MAX];
-    int res;
+    const char* command = args[1].c_str();
     int len = 0;
-    int cmd = 0;
-    const char *reboot_target;
-
-    res = expand_props(command, args[1], sizeof(command));
-    if (res) {
-        ERROR("powerctl: cannot expand '%s'\n", args[1]);
-        return -EINVAL;
-    }
+    unsigned int cmd = 0;
+    const char *reboot_target = "";
+    void (*callback_on_ro_remount)(const struct mntent*) = NULL;
 
     if (strncmp(command, "shutdown", 8) == 0) {
         cmd = ANDROID_RB_POWEROFF;
@@ -578,63 +604,63 @@
     }
 
     if (command[len] == ',') {
-        reboot_target = &command[len + 1];
-    } else if (command[len] == '\0') {
-        reboot_target = "";
-    } else {
+        if (cmd == ANDROID_RB_POWEROFF &&
+            !strcmp(&command[len + 1], "userrequested")) {
+            // The shutdown reason is PowerManager.SHUTDOWN_USER_REQUESTED.
+            // Run fsck once the file system is remounted in read-only mode.
+            callback_on_ro_remount = unmount_and_fsck;
+        } else if (cmd == ANDROID_RB_RESTART2) {
+            reboot_target = &command[len + 1];
+        }
+    } else if (command[len] != '\0') {
         ERROR("powerctl: unrecognized reboot target '%s'\n", &command[len]);
         return -EINVAL;
     }
 
-    return android_reboot(cmd, 0, reboot_target);
+    return android_reboot_with_callback(cmd, 0, reboot_target,
+                                        callback_on_ro_remount);
 }
 
-int do_trigger(int nargs, char **args)
+int do_trigger(const std::vector<std::string>& args)
 {
-    char prop_val[PROP_VALUE_MAX];
-    int res = expand_props(prop_val, args[1], sizeof(prop_val));
-    if (res) {
-        ERROR("trigger: cannot expand '%s'\n", args[1]);
-        return -EINVAL;
-    }
-    action_for_each_trigger(prop_val, action_add_queue_tail);
+    ActionManager::GetInstance().QueueEventTrigger(args[1]);
     return 0;
 }
 
-int do_symlink(int nargs, char **args)
+int do_symlink(const std::vector<std::string>& args)
 {
-    return symlink(args[1], args[2]);
+    return symlink(args[1].c_str(), args[2].c_str());
 }
 
-int do_rm(int nargs, char **args)
+int do_rm(const std::vector<std::string>& args)
 {
-    return unlink(args[1]);
+    return unlink(args[1].c_str());
 }
 
-int do_rmdir(int nargs, char **args)
+int do_rmdir(const std::vector<std::string>& args)
 {
-    return rmdir(args[1]);
+    return rmdir(args[1].c_str());
 }
 
-int do_sysclktz(int nargs, char **args)
+int do_sysclktz(const std::vector<std::string>& args)
 {
     struct timezone tz;
 
-    if (nargs != 2)
+    if (args.size() != 2)
         return -1;
 
     memset(&tz, 0, sizeof(tz));
-    tz.tz_minuteswest = atoi(args[1]);
+    tz.tz_minuteswest = std::stoi(args[1]);
     if (settimeofday(NULL, &tz))
         return -1;
     return 0;
 }
 
-int do_verity_load_state(int nargs, char **args) {
+int do_verity_load_state(const std::vector<std::string>& args) {
     int mode = -1;
     int rc = fs_mgr_load_verity_state(&mode);
     if (rc == 0 && mode == VERITY_MODE_LOGGING) {
-        action_for_each_trigger("verity-logging", action_add_queue_tail);
+        ActionManager::GetInstance().QueueEventTrigger("verity-logging");
     }
     return rc;
 }
@@ -644,24 +670,18 @@
                  android::base::StringPrintf("%d", mode).c_str());
 }
 
-int do_verity_update_state(int nargs, char** args) {
+int do_verity_update_state(const std::vector<std::string>& args) {
     return fs_mgr_update_verity_state(verity_update_property);
 }
 
-int do_write(int nargs, char **args)
+int do_write(const std::vector<std::string>& args)
 {
-    const char *path = args[1];
-    const char *value = args[2];
-
-    char expanded_value[256];
-    if (expand_props(expanded_value, value, sizeof(expanded_value))) {
-        ERROR("cannot expand '%s' while writing to '%s'\n", value, path);
-        return -EINVAL;
-    }
-    return write_file(path, expanded_value);
+    const char* path = args[1].c_str();
+    const char* value = args[2].c_str();
+    return write_file(path, value);
 }
 
-int do_copy(int nargs, char **args)
+int do_copy(const std::vector<std::string>& args)
 {
     char *buffer = NULL;
     int rc = 0;
@@ -670,16 +690,16 @@
     int brtw, brtr;
     char *p;
 
-    if (nargs != 3)
+    if (args.size() != 3)
         return -1;
 
-    if (stat(args[1], &info) < 0)
+    if (stat(args[1].c_str(), &info) < 0)
         return -1;
 
-    if ((fd1 = open(args[1], O_RDONLY|O_CLOEXEC)) < 0)
+    if ((fd1 = open(args[1].c_str(), O_RDONLY|O_CLOEXEC)) < 0)
         goto out_err;
 
-    if ((fd2 = open(args[2], O_WRONLY|O_CREAT|O_TRUNC|O_CLOEXEC, 0660)) < 0)
+    if ((fd2 = open(args[2].c_str(), O_WRONLY|O_CREAT|O_TRUNC|O_CLOEXEC, 0660)) < 0)
         goto out_err;
 
     if (!(buffer = (char*) malloc(info.st_size)))
@@ -723,13 +743,14 @@
     return rc;
 }
 
-int do_chown(int nargs, char **args) {
+int do_chown(const std::vector<std::string>& args) {
     /* GID is optional. */
-    if (nargs == 3) {
-        if (lchown(args[2], decode_uid(args[1]), -1) == -1)
+    if (args.size() == 3) {
+        if (lchown(args[2].c_str(), decode_uid(args[1].c_str()), -1) == -1)
             return -errno;
-    } else if (nargs == 4) {
-        if (lchown(args[3], decode_uid(args[1]), decode_uid(args[2])) == -1)
+    } else if (args.size() == 4) {
+        if (lchown(args[3].c_str(), decode_uid(args[1].c_str()),
+                   decode_uid(args[2].c_str())) == -1)
             return -errno;
     } else {
         return -1;
@@ -750,49 +771,41 @@
     return mode;
 }
 
-int do_chmod(int nargs, char **args) {
-    mode_t mode = get_mode(args[1]);
-    if (fchmodat(AT_FDCWD, args[2], mode, AT_SYMLINK_NOFOLLOW) < 0) {
+int do_chmod(const std::vector<std::string>& args) {
+    mode_t mode = get_mode(args[1].c_str());
+    if (fchmodat(AT_FDCWD, args[2].c_str(), mode, AT_SYMLINK_NOFOLLOW) < 0) {
         return -errno;
     }
     return 0;
 }
 
-int do_restorecon(int nargs, char **args) {
-    int i;
+int do_restorecon(const std::vector<std::string>& args) {
     int ret = 0;
 
-    for (i = 1; i < nargs; i++) {
-        if (restorecon(args[i]) < 0)
+    for (auto it = std::next(args.begin()); it != args.end(); ++it) {
+        if (restorecon(it->c_str()) < 0)
             ret = -errno;
     }
     return ret;
 }
 
-int do_restorecon_recursive(int nargs, char **args) {
-    int i;
+int do_restorecon_recursive(const std::vector<std::string>& args) {
     int ret = 0;
 
-    for (i = 1; i < nargs; i++) {
-        if (restorecon_recursive(args[i]) < 0)
+    for (auto it = std::next(args.begin()); it != args.end(); ++it) {
+        if (restorecon_recursive(it->c_str()) < 0)
             ret = -errno;
     }
     return ret;
 }
 
-int do_loglevel(int nargs, char **args) {
-    int log_level;
-    char log_level_str[PROP_VALUE_MAX] = "";
-    if (nargs != 2) {
+int do_loglevel(const std::vector<std::string>& args) {
+    if (args.size() != 2) {
         ERROR("loglevel: missing argument\n");
         return -EINVAL;
     }
 
-    if (expand_props(log_level_str, args[1], sizeof(log_level_str))) {
-        ERROR("loglevel: cannot expand '%s'\n", args[1]);
-        return -EINVAL;
-    }
-    log_level = atoi(log_level_str);
+    int log_level = std::stoi(args[1]);
     if (log_level < KLOG_ERROR_LEVEL || log_level > KLOG_DEBUG_LEVEL) {
         ERROR("loglevel: invalid log level'%d'\n", log_level);
         return -EINVAL;
@@ -801,28 +814,28 @@
     return 0;
 }
 
-int do_load_persist_props(int nargs, char **args) {
-    if (nargs == 1) {
+int do_load_persist_props(const std::vector<std::string>& args) {
+    if (args.size() == 1) {
         load_persist_props();
         return 0;
     }
     return -1;
 }
 
-int do_load_all_props(int nargs, char **args) {
-    if (nargs == 1) {
+int do_load_all_props(const std::vector<std::string>& args) {
+    if (args.size() == 1) {
         load_all_props();
         return 0;
     }
     return -1;
 }
 
-int do_wait(int nargs, char **args)
+int do_wait(const std::vector<std::string>& args)
 {
-    if (nargs == 2) {
-        return wait_for_file(args[1], COMMAND_RETRY_TIMEOUT);
-    } else if (nargs == 3) {
-        return wait_for_file(args[1], atoi(args[2]));
+    if (args.size() == 2) {
+        return wait_for_file(args[1].c_str(), COMMAND_RETRY_TIMEOUT);
+    } else if (args.size() == 3) {
+        return wait_for_file(args[1].c_str(), std::stoi(args[2]));
     } else
         return -1;
 }
@@ -839,18 +852,17 @@
     return 0;
 }
 
-int do_installkey(int nargs, char **args)
+int do_installkey(const std::vector<std::string>& args)
 {
-    if (nargs != 2) {
+    if (args.size() != 2) {
         return -1;
     }
 
-    char prop_value[PROP_VALUE_MAX] = {0};
-    property_get("ro.crypto.type", prop_value);
-    if (strcmp(prop_value, "file")) {
+    std::string prop_value = property_get("ro.crypto.type");
+    if (prop_value != "file") {
         return 0;
     }
 
-    return e4crypt_create_device_key(args[1],
+    return e4crypt_create_device_key(args[1].c_str(),
                                      do_installkeys_ensure_dir_exists);
 }
diff --git a/init/init.cpp b/init/init.cpp
index f48016f..c94a6fe 100644
--- a/init/init.cpp
+++ b/init/init.cpp
@@ -32,7 +32,6 @@
 #include <sys/types.h>
 #include <sys/un.h>
 #include <sys/wait.h>
-#include <termios.h>
 #include <unistd.h>
 
 #include <mtd/mtd-user.h>
@@ -53,16 +52,18 @@
 
 #include <memory>
 
+#include "action.h"
+#include "bootchart.h"
 #include "devices.h"
 #include "init.h"
+#include "init_parser.h"
+#include "keychords.h"
 #include "log.h"
 #include "property_service.h"
-#include "bootchart.h"
+#include "service.h"
 #include "signal_handler.h"
-#include "keychords.h"
-#include "init_parser.h"
-#include "util.h"
 #include "ueventd.h"
+#include "util.h"
 #include "watchdogd.h"
 
 struct selabel_handle *sehandle;
@@ -72,14 +73,11 @@
 
 static char qemu[32];
 
-static struct action *cur_action = NULL;
-static struct command *cur_command = NULL;
-
-static int have_console;
-static char console_name[PROP_VALUE_MAX] = "/dev/console";
+int have_console;
+std::string console_name = "/dev/console";
 static time_t process_needs_restart;
 
-static const char *ENV[32];
+const char *ENV[32];
 
 bool waiting_for_exec = false;
 
@@ -94,27 +92,6 @@
     }
 }
 
-void service::NotifyStateChange(const char* new_state) {
-    if (!properties_initialized()) {
-        // If properties aren't available yet, we can't set them.
-        return;
-    }
-
-    if ((flags & SVC_EXEC) != 0) {
-        // 'exec' commands don't have properties tracking their state.
-        return;
-    }
-
-    char prop_name[PROP_NAME_MAX];
-    if (snprintf(prop_name, sizeof(prop_name), "init.svc.%s", name) >= PROP_NAME_MAX) {
-        // If the property name would be too long, we can't set it.
-        ERROR("Property name \"init.svc.%s\" too long; not setting to %s\n", name, new_state);
-        return;
-    }
-
-    property_set(prop_name, new_state);
-}
-
 /* add_environment - add "key=value" to the current environment */
 int add_environment(const char *key, const char *val)
 {
@@ -147,483 +124,80 @@
     return -1;
 }
 
-void zap_stdio(void)
-{
-    int fd;
-    fd = open("/dev/null", O_RDWR);
-    dup2(fd, 0);
-    dup2(fd, 1);
-    dup2(fd, 2);
-    close(fd);
-}
-
-static void open_console()
-{
-    int fd;
-    if ((fd = open(console_name, O_RDWR)) < 0) {
-        fd = open("/dev/null", O_RDWR);
-    }
-    ioctl(fd, TIOCSCTTY, 0);
-    dup2(fd, 0);
-    dup2(fd, 1);
-    dup2(fd, 2);
-    close(fd);
-}
-
-static void publish_socket(const char *name, int fd)
-{
-    char key[64] = ANDROID_SOCKET_ENV_PREFIX;
-    char val[64];
-
-    strlcpy(key + sizeof(ANDROID_SOCKET_ENV_PREFIX) - 1,
-            name,
-            sizeof(key) - sizeof(ANDROID_SOCKET_ENV_PREFIX));
-    snprintf(val, sizeof(val), "%d", fd);
-    add_environment(key, val);
-
-    /* make sure we don't close-on-exec */
-    fcntl(fd, F_SETFD, 0);
-}
-
-void service_start(struct service *svc, const char *dynamic_args)
-{
-    // Starting a service removes it from the disabled or reset state and
-    // immediately takes it out of the restarting state if it was in there.
-    svc->flags &= (~(SVC_DISABLED|SVC_RESTARTING|SVC_RESET|SVC_RESTART|SVC_DISABLED_START));
-    svc->time_started = 0;
-
-    // Running processes require no additional work --- if they're in the
-    // process of exiting, we've ensured that they will immediately restart
-    // on exit, unless they are ONESHOT.
-    if (svc->flags & SVC_RUNNING) {
-        return;
-    }
-
-    bool needs_console = (svc->flags & SVC_CONSOLE);
-    if (needs_console && !have_console) {
-        ERROR("service '%s' requires console\n", svc->name);
-        svc->flags |= SVC_DISABLED;
-        return;
-    }
-
-    struct stat sb;
-    if (stat(svc->args[0], &sb) == -1) {
-        ERROR("cannot find '%s' (%s), disabling '%s'\n", svc->args[0], strerror(errno), svc->name);
-        svc->flags |= SVC_DISABLED;
-        return;
-    }
-
-    if ((!(svc->flags & SVC_ONESHOT)) && dynamic_args) {
-        ERROR("service '%s' must be one-shot to use dynamic args, disabling\n", svc->args[0]);
-        svc->flags |= SVC_DISABLED;
-        return;
-    }
-
-    char* scon = NULL;
-    if (svc->seclabel) {
-        scon = strdup(svc->seclabel);
-        if (!scon) {
-            ERROR("Out of memory while starting '%s'\n", svc->name);
-            return;
-        }
-    } else {
-        char *mycon = NULL, *fcon = NULL;
-
-        INFO("computing context for service '%s'\n", svc->args[0]);
-        int rc = getcon(&mycon);
-        if (rc < 0) {
-            ERROR("could not get context while starting '%s'\n", svc->name);
-            return;
-        }
-
-        rc = getfilecon(svc->args[0], &fcon);
-        if (rc < 0) {
-            ERROR("could not get context while starting '%s'\n", svc->name);
-            freecon(mycon);
-            return;
-        }
-
-        rc = security_compute_create(mycon, fcon, string_to_security_class("process"), &scon);
-        if (rc == 0 && !strcmp(scon, mycon)) {
-            ERROR("Warning!  Service %s needs a SELinux domain defined; please fix!\n", svc->name);
-        }
-        freecon(mycon);
-        freecon(fcon);
-        if (rc < 0) {
-            ERROR("could not get context while starting '%s'\n", svc->name);
-            return;
-        }
-    }
-
-    NOTICE("Starting service '%s'...\n", svc->name);
-
-    pid_t pid = fork();
-    if (pid == 0) {
-        struct socketinfo *si;
-        struct svcenvinfo *ei;
-        char tmp[32];
-        int fd, sz;
-
-        umask(077);
-        if (properties_initialized()) {
-            get_property_workspace(&fd, &sz);
-            snprintf(tmp, sizeof(tmp), "%d,%d", dup(fd), sz);
-            add_environment("ANDROID_PROPERTY_WORKSPACE", tmp);
-        }
-
-        for (ei = svc->envvars; ei; ei = ei->next)
-            add_environment(ei->name, ei->value);
-
-        for (si = svc->sockets; si; si = si->next) {
-            int socket_type = (
-                    !strcmp(si->type, "stream") ? SOCK_STREAM :
-                        (!strcmp(si->type, "dgram") ? SOCK_DGRAM : SOCK_SEQPACKET));
-            int s = create_socket(si->name, socket_type,
-                                  si->perm, si->uid, si->gid, si->socketcon ?: scon);
-            if (s >= 0) {
-                publish_socket(si->name, s);
-            }
-        }
-
-        freecon(scon);
-        scon = NULL;
-
-        if (svc->writepid_files_) {
-            std::string pid_str = android::base::StringPrintf("%d", pid);
-            for (auto& file : *svc->writepid_files_) {
-                if (!android::base::WriteStringToFile(pid_str, file)) {
-                    ERROR("couldn't write %s to %s: %s\n",
-                          pid_str.c_str(), file.c_str(), strerror(errno));
-                }
-            }
-        }
-
-        if (svc->ioprio_class != IoSchedClass_NONE) {
-            if (android_set_ioprio(getpid(), svc->ioprio_class, svc->ioprio_pri)) {
-                ERROR("Failed to set pid %d ioprio = %d,%d: %s\n",
-                      getpid(), svc->ioprio_class, svc->ioprio_pri, strerror(errno));
-            }
-        }
-
-        if (needs_console) {
-            setsid();
-            open_console();
-        } else {
-            zap_stdio();
-        }
-
-        if (false) {
-            for (size_t n = 0; svc->args[n]; n++) {
-                INFO("args[%zu] = '%s'\n", n, svc->args[n]);
-            }
-            for (size_t n = 0; ENV[n]; n++) {
-                INFO("env[%zu] = '%s'\n", n, ENV[n]);
-            }
-        }
-
-        setpgid(0, getpid());
-
-        // As requested, set our gid, supplemental gids, and uid.
-        if (svc->gid) {
-            if (setgid(svc->gid) != 0) {
-                ERROR("setgid failed: %s\n", strerror(errno));
-                _exit(127);
-            }
-        }
-        if (svc->nr_supp_gids) {
-            if (setgroups(svc->nr_supp_gids, svc->supp_gids) != 0) {
-                ERROR("setgroups failed: %s\n", strerror(errno));
-                _exit(127);
-            }
-        }
-        if (svc->uid) {
-            if (setuid(svc->uid) != 0) {
-                ERROR("setuid failed: %s\n", strerror(errno));
-                _exit(127);
-            }
-        }
-        if (svc->seclabel) {
-            if (setexeccon(svc->seclabel) < 0) {
-                ERROR("cannot setexeccon('%s'): %s\n", svc->seclabel, strerror(errno));
-                _exit(127);
-            }
-        }
-
-        if (!dynamic_args) {
-            if (execve(svc->args[0], (char**) svc->args, (char**) ENV) < 0) {
-                ERROR("cannot execve('%s'): %s\n", svc->args[0], strerror(errno));
-            }
-        } else {
-            char *arg_ptrs[INIT_PARSER_MAXARGS+1];
-            int arg_idx = svc->nargs;
-            char *tmp = strdup(dynamic_args);
-            char *next = tmp;
-            char *bword;
-
-            /* Copy the static arguments */
-            memcpy(arg_ptrs, svc->args, (svc->nargs * sizeof(char *)));
-
-            while((bword = strsep(&next, " "))) {
-                arg_ptrs[arg_idx++] = bword;
-                if (arg_idx == INIT_PARSER_MAXARGS)
-                    break;
-            }
-            arg_ptrs[arg_idx] = NULL;
-            execve(svc->args[0], (char**) arg_ptrs, (char**) ENV);
-        }
-        _exit(127);
-    }
-
-    freecon(scon);
-
-    if (pid < 0) {
-        ERROR("failed to start '%s'\n", svc->name);
-        svc->pid = 0;
-        return;
-    }
-
-    svc->time_started = gettime();
-    svc->pid = pid;
-    svc->flags |= SVC_RUNNING;
-
-    if ((svc->flags & SVC_EXEC) != 0) {
-        INFO("SVC_EXEC pid %d (uid %d gid %d+%zu context %s) started; waiting...\n",
-             svc->pid, svc->uid, svc->gid, svc->nr_supp_gids,
-             svc->seclabel ? : "default");
-        waiting_for_exec = true;
-    }
-
-    svc->NotifyStateChange("running");
-}
-
-/* The how field should be either SVC_DISABLED, SVC_RESET, or SVC_RESTART */
-static void service_stop_or_reset(struct service *svc, int how)
-{
-    /* The service is still SVC_RUNNING until its process exits, but if it has
-     * already exited it shoudn't attempt a restart yet. */
-    svc->flags &= ~(SVC_RESTARTING | SVC_DISABLED_START);
-
-    if ((how != SVC_DISABLED) && (how != SVC_RESET) && (how != SVC_RESTART)) {
-        /* Hrm, an illegal flag.  Default to SVC_DISABLED */
-        how = SVC_DISABLED;
-    }
-        /* if the service has not yet started, prevent
-         * it from auto-starting with its class
-         */
-    if (how == SVC_RESET) {
-        svc->flags |= (svc->flags & SVC_RC_DISABLED) ? SVC_DISABLED : SVC_RESET;
-    } else {
-        svc->flags |= how;
-    }
-
-    if (svc->pid) {
-        NOTICE("Service '%s' is being killed...\n", svc->name);
-        kill(-svc->pid, SIGKILL);
-        svc->NotifyStateChange("stopping");
-    } else {
-        svc->NotifyStateChange("stopped");
-    }
-}
-
-void service_reset(struct service *svc)
-{
-    service_stop_or_reset(svc, SVC_RESET);
-}
-
-void service_stop(struct service *svc)
-{
-    service_stop_or_reset(svc, SVC_DISABLED);
-}
-
-void service_restart(struct service *svc)
-{
-    if (svc->flags & SVC_RUNNING) {
-        /* Stop, wait, then start the service. */
-        service_stop_or_reset(svc, SVC_RESTART);
-    } else if (!(svc->flags & SVC_RESTARTING)) {
-        /* Just start the service since it's not running. */
-        service_start(svc, NULL);
-    } /* else: Service is restarting anyways. */
-}
-
 void property_changed(const char *name, const char *value)
 {
     if (property_triggers_enabled)
-        queue_property_triggers(name, value);
-}
-
-static void restart_service_if_needed(struct service *svc)
-{
-    time_t next_start_time = svc->time_started + 5;
-
-    if (next_start_time <= gettime()) {
-        svc->flags &= (~SVC_RESTARTING);
-        service_start(svc, NULL);
-        return;
-    }
-
-    if ((next_start_time < process_needs_restart) ||
-        (process_needs_restart == 0)) {
-        process_needs_restart = next_start_time;
-    }
+        ActionManager::GetInstance().QueuePropertyTrigger(name, value);
 }
 
 static void restart_processes()
 {
     process_needs_restart = 0;
-    service_for_each_flags(SVC_RESTARTING,
-                           restart_service_if_needed);
+    ServiceManager::GetInstance().
+        ForEachServiceWithFlags(SVC_RESTARTING, [] (Service* s) {
+                s->RestartIfNeeded(process_needs_restart);
+            });
 }
 
-static void msg_start(const char *name)
+static void msg_start(const std::string& name)
 {
-    struct service *svc = NULL;
-    char *tmp = NULL;
-    char *args = NULL;
+    Service* svc = nullptr;
+    std::vector<std::string> vargs;
 
-    if (!strchr(name, ':'))
-        svc = service_find_by_name(name);
-    else {
-        tmp = strdup(name);
-        if (tmp) {
-            args = strchr(tmp, ':');
-            *args = '\0';
-            args++;
+    size_t colon_pos = name.find(':');
+    if (colon_pos == std::string::npos) {
+        svc = ServiceManager::GetInstance().FindServiceByName(name);
+    } else {
+        std::string service_name(name.substr(0, colon_pos));
+        std::string args(name.substr(colon_pos + 1));
+        vargs = android::base::Split(args, " ");
 
-            svc = service_find_by_name(tmp);
-        }
+        svc = ServiceManager::GetInstance().FindServiceByName(service_name);
     }
 
     if (svc) {
-        service_start(svc, args);
+        svc->Start(vargs);
     } else {
-        ERROR("no such service '%s'\n", name);
+        ERROR("no such service '%s'\n", name.c_str());
     }
-    if (tmp)
-        free(tmp);
 }
 
-static void msg_stop(const char *name)
+static void msg_stop(const std::string& name)
 {
-    struct service *svc = service_find_by_name(name);
+    Service* svc = ServiceManager::GetInstance().FindServiceByName(name);
 
     if (svc) {
-        service_stop(svc);
+        svc->Stop();
     } else {
-        ERROR("no such service '%s'\n", name);
+        ERROR("no such service '%s'\n", name.c_str());
     }
 }
 
-static void msg_restart(const char *name)
+static void msg_restart(const std::string& name)
 {
-    struct service *svc = service_find_by_name(name);
+    Service* svc = ServiceManager::GetInstance().FindServiceByName(name);
 
     if (svc) {
-        service_restart(svc);
+        svc->Restart();
     } else {
-        ERROR("no such service '%s'\n", name);
+        ERROR("no such service '%s'\n", name.c_str());
     }
 }
 
-void handle_control_message(const char *msg, const char *arg)
+void handle_control_message(const std::string& msg, const std::string& arg)
 {
-    if (!strcmp(msg,"start")) {
+    if (msg == "start") {
         msg_start(arg);
-    } else if (!strcmp(msg,"stop")) {
+    } else if (msg == "stop") {
         msg_stop(arg);
-    } else if (!strcmp(msg,"restart")) {
+    } else if (msg == "restart") {
         msg_restart(arg);
     } else {
-        ERROR("unknown control msg '%s'\n", msg);
+        ERROR("unknown control msg '%s'\n", msg.c_str());
     }
 }
 
-static struct command *get_first_command(struct action *act)
-{
-    struct listnode *node;
-    node = list_head(&act->commands);
-    if (!node || list_empty(&act->commands))
-        return NULL;
-
-    return node_to_item(node, struct command, clist);
-}
-
-static struct command *get_next_command(struct action *act, struct command *cmd)
-{
-    struct listnode *node;
-    node = cmd->clist.next;
-    if (!node)
-        return NULL;
-    if (node == &act->commands)
-        return NULL;
-
-    return node_to_item(node, struct command, clist);
-}
-
-static int is_last_command(struct action *act, struct command *cmd)
-{
-    return (list_tail(&act->commands) == &cmd->clist);
-}
-
-
-void build_triggers_string(char *name_str, int length, struct action *cur_action) {
-    struct listnode *node;
-    struct trigger *cur_trigger;
-
-    list_for_each(node, &cur_action->triggers) {
-        cur_trigger = node_to_item(node, struct trigger, nlist);
-        if (node != cur_action->triggers.next) {
-            strlcat(name_str, " " , length);
-        }
-        strlcat(name_str, cur_trigger->name , length);
-    }
-}
-
-void execute_one_command() {
-    Timer t;
-
-    char cmd_str[256] = "";
-    char name_str[256] = "";
-
-    if (!cur_action || !cur_command || is_last_command(cur_action, cur_command)) {
-        cur_action = action_remove_queue_head();
-        cur_command = NULL;
-        if (!cur_action) {
-            return;
-        }
-
-        build_triggers_string(name_str, sizeof(name_str), cur_action);
-
-        INFO("processing action %p (%s)\n", cur_action, name_str);
-        cur_command = get_first_command(cur_action);
-    } else {
-        cur_command = get_next_command(cur_action, cur_command);
-    }
-
-    if (!cur_command) {
-        return;
-    }
-
-    int result = cur_command->func(cur_command->nargs, cur_command->args);
-    if (klog_get_level() >= KLOG_INFO_LEVEL) {
-        for (int i = 0; i < cur_command->nargs; i++) {
-            strlcat(cmd_str, cur_command->args[i], sizeof(cmd_str));
-            if (i < cur_command->nargs - 1) {
-                strlcat(cmd_str, " ", sizeof(cmd_str));
-            }
-        }
-        char source[256];
-        if (cur_command->filename) {
-            snprintf(source, sizeof(source), " (%s:%d)", cur_command->filename, cur_command->line);
-        } else {
-            *source = '\0';
-        }
-        INFO("Command '%s' action=%s%s returned %d took %.2fs\n",
-             cmd_str, cur_action ? name_str : "", source, result, t.duration());
-    }
-}
-
-static int wait_for_coldboot_done_action(int nargs, char **args) {
+static int wait_for_coldboot_done_action(const std::vector<std::string>& args) {
     Timer t;
 
     NOTICE("Waiting for %s...\n", COLDBOOT_DONE);
@@ -653,7 +227,7 @@
  * time. We do not reboot or halt on failures, as this is a best-effort
  * attempt.
  */
-static int mix_hwrng_into_linux_rng_action(int nargs, char **args)
+static int mix_hwrng_into_linux_rng_action(const std::vector<std::string>& args)
 {
     int result = -1;
     int hwrandom_fd = -1;
@@ -715,20 +289,20 @@
     return result;
 }
 
-static int keychord_init_action(int nargs, char **args)
+static int keychord_init_action(const std::vector<std::string>& args)
 {
     keychord_init();
     return 0;
 }
 
-static int console_init_action(int nargs, char **args)
+static int console_init_action(const std::vector<std::string>& args)
 {
-    char console[PROP_VALUE_MAX];
-    if (property_get("ro.boot.console", console) > 0) {
-        snprintf(console_name, sizeof(console_name), "/dev/%s", console);
+    std::string console = property_get("ro.boot.console");
+    if (!console.empty()) {
+        console_name = "/dev/" + console;
     }
 
-    int fd = open(console_name, O_RDWR | O_CLOEXEC);
+    int fd = open(console_name.c_str(), O_RDWR | O_CLOEXEC);
     if (fd >= 0)
         have_console = 1;
     close(fd);
@@ -789,9 +363,8 @@
         { "ro.boot.revision",   "ro.revision",   "0", },
     };
     for (size_t i = 0; i < ARRAY_SIZE(prop_map); i++) {
-        char value[PROP_VALUE_MAX];
-        int rc = property_get(prop_map[i].src_prop, value);
-        property_set(prop_map[i].dst_prop, (rc > 0) ? value : prop_map[i].default_value);
+        std::string value = property_get(prop_map[i].src_prop);
+        property_set(prop_map[i].dst_prop, (!value.empty()) ? value.c_str() : prop_map[i].default_value);
     }
 }
 
@@ -837,9 +410,9 @@
     if (qemu[0]) import_kernel_cmdline(true, import_kernel_nv);
 }
 
-static int queue_property_triggers_action(int nargs, char **args)
+static int queue_property_triggers_action(const std::vector<std::string>& args)
 {
-    queue_all_property_triggers();
+    ActionManager::GetInstance().QueueAllPropertyTriggers();
     /* enable property triggers */
     property_triggers_enabled = 1;
     return 0;
@@ -1031,38 +604,40 @@
     property_load_boot_defaults();
     start_property_service();
 
-    init_parse_config_file("/init.rc");
+    init_parse_config("/init.rc");
 
-    action_for_each_trigger("early-init", action_add_queue_tail);
+    ActionManager& am = ActionManager::GetInstance();
+
+    am.QueueEventTrigger("early-init");
 
     // Queue an action that waits for coldboot done so we know ueventd has set up all of /dev...
-    queue_builtin_action(wait_for_coldboot_done_action, "wait_for_coldboot_done");
+    am.QueueBuiltinAction(wait_for_coldboot_done_action, "wait_for_coldboot_done");
     // ... so that we can start queuing up actions that require stuff from /dev.
-    queue_builtin_action(mix_hwrng_into_linux_rng_action, "mix_hwrng_into_linux_rng");
-    queue_builtin_action(keychord_init_action, "keychord_init");
-    queue_builtin_action(console_init_action, "console_init");
+    am.QueueBuiltinAction(mix_hwrng_into_linux_rng_action, "mix_hwrng_into_linux_rng");
+    am.QueueBuiltinAction(keychord_init_action, "keychord_init");
+    am.QueueBuiltinAction(console_init_action, "console_init");
 
     // Trigger all the boot actions to get us started.
-    action_for_each_trigger("init", action_add_queue_tail);
+    am.QueueEventTrigger("init");
 
     // Repeat mix_hwrng_into_linux_rng in case /dev/hw_random or /dev/random
     // wasn't ready immediately after wait_for_coldboot_done
-    queue_builtin_action(mix_hwrng_into_linux_rng_action, "mix_hwrng_into_linux_rng");
+    am.QueueBuiltinAction(mix_hwrng_into_linux_rng_action, "mix_hwrng_into_linux_rng");
 
     // Don't mount filesystems or start core system services in charger mode.
-    char bootmode[PROP_VALUE_MAX];
-    if (property_get("ro.bootmode", bootmode) > 0 && strcmp(bootmode, "charger") == 0) {
-        action_for_each_trigger("charger", action_add_queue_tail);
+    std::string bootmode = property_get("ro.bootmode");
+    if (bootmode == "charger") {
+        am.QueueEventTrigger("charger");
     } else {
-        action_for_each_trigger("late-init", action_add_queue_tail);
+        am.QueueEventTrigger("late-init");
     }
 
     // Run all property triggers based on current state of the properties.
-    queue_builtin_action(queue_property_triggers_action, "queue_property_triggers");
+    am.QueueBuiltinAction(queue_property_triggers_action, "queue_property_triggers");
 
     while (true) {
         if (!waiting_for_exec) {
-            execute_one_command();
+            am.ExecuteOneCommand();
             restart_processes();
         }
 
@@ -1073,7 +648,7 @@
                 timeout = 0;
         }
 
-        if (!action_queue_empty() || cur_action) {
+        if (am.HasMoreCommands()) {
             timeout = 0;
         }
 
diff --git a/init/init.h b/init/init.h
index c166969..345d442 100644
--- a/init/init.h
+++ b/init/init.h
@@ -17,149 +17,28 @@
 #ifndef _INIT_INIT_H
 #define _INIT_INIT_H
 
-#include <sys/types.h>
-
 #include <string>
-#include <vector>
 
-#include <cutils/list.h>
-#include <cutils/iosched_policy.h>
-
-struct command
-{
-        /* list of commands in an action */
-    struct listnode clist;
-
-    int (*func)(int nargs, char **args);
-
-    int line;
-    const char *filename;
-
-    int nargs;
-    char *args[1];
-};
-
-struct trigger {
-    struct listnode nlist;
-    const char *name;
-};
-
-struct action {
-        /* node in list of all actions */
-    struct listnode alist;
-        /* node in the queue of pending actions */
-    struct listnode qlist;
-        /* node in list of actions for a trigger */
-    struct listnode tlist;
-
-    unsigned hash;
-
-        /* list of actions which triggers the commands*/
-    struct listnode triggers;
-    struct listnode commands;
-    struct command *current;
-};
-
-struct socketinfo {
-    struct socketinfo *next;
-    const char *name;
-    const char *type;
-    uid_t uid;
-    gid_t gid;
-    int perm;
-    const char *socketcon;
-};
-
-struct svcenvinfo {
-    struct svcenvinfo *next;
-    const char *name;
-    const char *value;
-};
-
-#define SVC_DISABLED       0x001  // do not autostart with class
-#define SVC_ONESHOT        0x002  // do not restart on exit
-#define SVC_RUNNING        0x004  // currently active
-#define SVC_RESTARTING     0x008  // waiting to restart
-#define SVC_CONSOLE        0x010  // requires console
-#define SVC_CRITICAL       0x020  // will reboot into recovery if keeps crashing
-#define SVC_RESET          0x040  // Use when stopping a process, but not disabling so it can be restarted with its class.
-#define SVC_RC_DISABLED    0x080  // Remember if the disabled flag was set in the rc script.
-#define SVC_RESTART        0x100  // Use to safely restart (stop, wait, start) a service.
-#define SVC_DISABLED_START 0x200  // A start was requested but it was disabled at the time.
-#define SVC_EXEC           0x400  // This synthetic service corresponds to an 'exec'.
-
-#define NR_SVC_SUPP_GIDS 12    /* twelve supplementary groups */
+class Action;
+class Service;
 
 #define COMMAND_RETRY_TIMEOUT 5
 
-struct service {
-    void NotifyStateChange(const char* new_state);
-
-        /* list of all services */
-    struct listnode slist;
-
-    char *name;
-    const char *classname;
-
-    unsigned flags;
-    pid_t pid;
-    time_t time_started;    /* time of last start */
-    time_t time_crashed;    /* first crash within inspection window */
-    int nr_crashed;         /* number of times crashed within window */
-
-    uid_t uid;
-    gid_t gid;
-    gid_t supp_gids[NR_SVC_SUPP_GIDS];
-    size_t nr_supp_gids;
-
-    const char* seclabel;
-
-    struct socketinfo *sockets;
-    struct svcenvinfo *envvars;
-
-    struct action onrestart;  /* Actions to execute on restart. */
-
-    std::vector<std::string>* writepid_files_;
-
-    /* keycodes for triggering this service via /dev/keychord */
-    int *keycodes;
-    int nkeycodes;
-    int keychord_id;
-
-    IoSchedClass ioprio_class;
-    int ioprio_pri;
-
-    int nargs;
-    /* "MUST BE AT THE END OF THE STRUCT" */
-    char *args[1];
-}; /*     ^-------'args' MUST be at the end of this struct! */
-
+extern const char *ENV[32];
 extern bool waiting_for_exec;
+extern int have_console;
+extern std::string console_name;
 extern struct selabel_handle *sehandle;
 extern struct selabel_handle *sehandle_prop;
 
-void build_triggers_string(char *name_str, int length, struct action *cur_action);
+void handle_control_message(const std::string& msg, const std::string& arg);
 
-void handle_control_message(const char *msg, const char *arg);
-
-struct service *service_find_by_name(const char *name);
-struct service *service_find_by_pid(pid_t pid);
-struct service *service_find_by_keychord(int keychord_id);
-void service_for_each(void (*func)(struct service *svc));
-void service_for_each_class(const char *classname,
-                            void (*func)(struct service *svc));
-void service_for_each_flags(unsigned matchflags,
-                            void (*func)(struct service *svc));
-void service_stop(struct service *svc);
-void service_reset(struct service *svc);
-void service_restart(struct service *svc);
-void service_start(struct service *svc, const char *dynamic_args);
 void property_changed(const char *name, const char *value);
 
 int selinux_reload_policy(void);
 
-void zap_stdio(void);
-
 void register_epoll_handler(int fd, void (*fn)());
 
-#endif	/* _INIT_INIT_H */
+int add_environment(const char* key, const char* val);
+
+#endif  /* _INIT_INIT_H */
diff --git a/init/init_parser.cpp b/init/init_parser.cpp
index 956ed25..12f44f7 100644
--- a/init/init_parser.cpp
+++ b/init/init_parser.cpp
@@ -15,6 +15,7 @@
  */
 
 #include <ctype.h>
+#include <dirent.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <inttypes.h>
@@ -25,19 +26,20 @@
 #include <string.h>
 #include <unistd.h>
 
+#include "action.h"
 #include "init.h"
-#include "parser.h"
 #include "init_parser.h"
 #include "log.h"
+#include "parser.h"
 #include "property_service.h"
+#include "service.h"
 #include "util.h"
 
+#include <base/stringprintf.h>
 #include <cutils/iosched_policy.h>
 #include <cutils/list.h>
 
 static list_declare(service_list);
-static list_declare(action_list);
-static list_declare(action_queue);
 
 struct import {
     struct listnode list;
@@ -61,8 +63,8 @@
 
 static struct {
     const char *name;
-    int (*func)(int nargs, char **args);
-    unsigned char nargs;
+    int (*func)(const std::vector<std::string>& args);
+    size_t nargs;
     unsigned char flags;
 } keyword_info[KEYWORD_COUNT] = {
     [ K_UNKNOWN ] = { "unknown", 0, 0, 0 },
@@ -76,42 +78,8 @@
 #define kw_nargs(kw) (keyword_info[kw].nargs)
 
 void dump_parser_state() {
-    if (false) {
-        struct listnode* node;
-        list_for_each(node, &service_list) {
-            service* svc = node_to_item(node, struct service, slist);
-            INFO("service %s\n", svc->name);
-            INFO("  class '%s'\n", svc->classname);
-            INFO("  exec");
-            for (int n = 0; n < svc->nargs; n++) {
-                INFO(" '%s'", svc->args[n]);
-            }
-            INFO("\n");
-            for (socketinfo* si = svc->sockets; si; si = si->next) {
-                INFO("  socket %s %s 0%o\n", si->name, si->type, si->perm);
-            }
-        }
-
-        list_for_each(node, &action_list) {
-            action* act = node_to_item(node, struct action, alist);
-            INFO("on ");
-            char name_str[256] = "";
-            build_triggers_string(name_str, sizeof(name_str), act);
-            INFO("%s", name_str);
-            INFO("\n");
-
-            struct listnode* node2;
-            list_for_each(node2, &act->commands) {
-                command* cmd = node_to_item(node2, struct command, clist);
-                INFO("  %p", cmd->func);
-                for (int n = 0; n < cmd->nargs; n++) {
-                    INFO(" %s", cmd->args[n]);
-                }
-                INFO("\n");
-            }
-            INFO("\n");
-        }
-    }
+    ServiceManager::GetInstance().DumpState();
+    ActionManager::GetInstance().DumpState();
 }
 
 static int lookup_keyword(const char *s)
@@ -216,27 +184,12 @@
 static void parse_line_no_op(struct parse_state*, int, char**) {
 }
 
-static int push_chars(char **dst, int *len, const char *chars, int cnt)
-{
-    if (cnt > *len)
+int expand_props(const std::string& src, std::string* dst) {
+    const char *src_ptr = src.c_str();
+
+    if (!dst) {
         return -1;
-
-    memcpy(*dst, chars, cnt);
-    *dst += cnt;
-    *len -= cnt;
-
-    return 0;
-}
-
-int expand_props(char *dst, const char *src, int dst_size)
-{
-    char *dst_ptr = dst;
-    const char *src_ptr = src;
-    int ret = 0;
-    int left = dst_size - 1;
-
-    if (!src || !dst || dst_size == 0)
-        return -1;
+    }
 
     /* - variables can either be $x.y or ${x.y}, in case they are only part
      *   of the string.
@@ -244,104 +197,75 @@
      * - no nested property expansion, i.e. ${foo.${bar}} is not supported,
      *   bad things will happen
      */
-    while (*src_ptr && left > 0) {
-        char *c;
-        char prop[PROP_NAME_MAX + 1];
-        char prop_val[PROP_VALUE_MAX];
-        int prop_len = 0;
-        int prop_val_len;
+    while (*src_ptr) {
+        const char *c;
 
         c = strchr(src_ptr, '$');
         if (!c) {
-            while (left-- > 0 && *src_ptr)
-                *(dst_ptr++) = *(src_ptr++);
+            dst->append(src_ptr);
             break;
         }
 
-        memset(prop, 0, sizeof(prop));
-
-        ret = push_chars(&dst_ptr, &left, src_ptr, c - src_ptr);
-        if (ret < 0)
-            goto err_nospace;
+        dst->append(src_ptr, c);
         c++;
 
         if (*c == '$') {
-            *(dst_ptr++) = *(c++);
+            dst->push_back(*(c++));
             src_ptr = c;
-            left--;
             continue;
         } else if (*c == '\0') {
             break;
         }
 
+        std::string prop_name;
         if (*c == '{') {
             c++;
-            while (*c && *c != '}' && prop_len < PROP_NAME_MAX)
-                prop[prop_len++] = *(c++);
-            if (*c != '}') {
-                /* failed to find closing brace, abort. */
-                if (prop_len == PROP_NAME_MAX)
-                    ERROR("prop name too long during expansion of '%s'\n",
-                          src);
-                else if (*c == '\0')
-                    ERROR("unexpected end of string in '%s', looking for }\n",
-                          src);
+            const char* end = strchr(c, '}');
+            if (!end) {
+                // failed to find closing brace, abort.
+                ERROR("unexpected end of string in '%s', looking for }\n", src.c_str());
                 goto err;
             }
-            prop[prop_len] = '\0';
-            c++;
-        } else if (*c) {
-            while (*c && prop_len < PROP_NAME_MAX)
-                prop[prop_len++] = *(c++);
-            if (prop_len == PROP_NAME_MAX && *c != '\0') {
-                ERROR("prop name too long in '%s'\n", src);
-                goto err;
-            }
-            prop[prop_len] = '\0';
+            prop_name = std::string(c, end);
+            c = end + 1;
+        } else {
+            prop_name = c;
             ERROR("using deprecated syntax for specifying property '%s', use ${name} instead\n",
-                  prop);
+                  c);
+            c += prop_name.size();
         }
 
-        if (prop_len == 0) {
-            ERROR("invalid zero-length prop name in '%s'\n", src);
+        if (prop_name.empty()) {
+            ERROR("invalid zero-length prop name in '%s'\n", src.c_str());
             goto err;
         }
 
-        prop_val_len = property_get(prop, prop_val);
-        if (!prop_val_len) {
+        std::string prop_val = property_get(prop_name.c_str());
+        if (prop_val.empty()) {
             ERROR("property '%s' doesn't exist while expanding '%s'\n",
-                  prop, src);
+                  prop_name.c_str(), src.c_str());
             goto err;
         }
 
-        ret = push_chars(&dst_ptr, &left, prop_val, prop_val_len);
-        if (ret < 0)
-            goto err_nospace;
+        dst->append(prop_val);
         src_ptr = c;
         continue;
     }
 
-    *dst_ptr = '\0';
     return 0;
-
-err_nospace:
-    ERROR("destination buffer overflow while expanding '%s'\n", src);
 err:
     return -1;
 }
 
 static void parse_import(struct parse_state *state, int nargs, char **args)
 {
-    struct listnode *import_list = (listnode*) state->priv;
-    char conf_file[PATH_MAX];
-    int ret;
-
     if (nargs != 2) {
         ERROR("single argument needed for import\n");
         return;
     }
 
-    ret = expand_props(conf_file, args[1], sizeof(conf_file));
+    std::string conf_file;
+    int ret = expand_props(args[1], &conf_file);
     if (ret) {
         ERROR("error while handling import on line '%d' in '%s'\n",
               state->line, state->filename);
@@ -349,7 +273,9 @@
     }
 
     struct import* import = (struct import*) calloc(1, sizeof(struct import));
-    import->filename = strdup(conf_file);
+    import->filename = strdup(conf_file.c_str());
+
+    struct listnode *import_list = (listnode*) state->priv;
     list_add_tail(import_list, &import->list);
     INFO("Added '%s' to import list\n", import->filename);
 }
@@ -389,10 +315,14 @@
 
     int nargs = 0;
 
+    //TODO: Use a parser with const input and remove this copy
+    std::vector<char> data_copy(data.begin(), data.end());
+    data_copy.push_back('\0');
+
     parse_state state;
     state.filename = fn;
     state.line = 0;
-    state.ptr = strdup(data.c_str());  // TODO: fix this code!
+    state.ptr = &data_copy[0];
     state.nexttoken = 0;
     state.parse_line = parse_line_no_op;
 
@@ -428,15 +358,15 @@
 parser_done:
     list_for_each(node, &import_list) {
          struct import* import = node_to_item(node, struct import, list);
-         if (!init_parse_config_file(import->filename)) {
+         if (!init_parse_config(import->filename)) {
              ERROR("could not import file '%s' from '%s': %s\n",
                    import->filename, fn, strerror(errno));
          }
     }
 }
 
-bool init_parse_config_file(const char* path) {
-    INFO("Parsing %s...\n", path);
+static bool init_parse_config_file(const char* path) {
+    INFO("Parsing file %s...\n", path);
     Timer t;
     std::string data;
     if (!read_file(path, &data)) {
@@ -451,561 +381,118 @@
     return true;
 }
 
-static int valid_name(const char *name)
-{
-    if (strlen(name) > 16) {
-        return 0;
+static bool init_parse_config_dir(const char* path) {
+    INFO("Parsing directory %s...\n", path);
+    std::unique_ptr<DIR, int(*)(DIR*)> config_dir(opendir(path), closedir);
+    if (!config_dir) {
+        ERROR("Could not import directory '%s'\n", path);
+        return false;
     }
-    while (*name) {
-        if (!isalnum(*name) && (*name != '_') && (*name != '-')) {
-            return 0;
-        }
-        name++;
-    }
-    return 1;
-}
-
-struct service *service_find_by_name(const char *name)
-{
-    struct listnode *node;
-    struct service *svc;
-    list_for_each(node, &service_list) {
-        svc = node_to_item(node, struct service, slist);
-        if (!strcmp(svc->name, name)) {
-            return svc;
-        }
-    }
-    return 0;
-}
-
-struct service *service_find_by_pid(pid_t pid)
-{
-    struct listnode *node;
-    struct service *svc;
-    list_for_each(node, &service_list) {
-        svc = node_to_item(node, struct service, slist);
-        if (svc->pid == pid) {
-            return svc;
-        }
-    }
-    return 0;
-}
-
-struct service *service_find_by_keychord(int keychord_id)
-{
-    struct listnode *node;
-    struct service *svc;
-    list_for_each(node, &service_list) {
-        svc = node_to_item(node, struct service, slist);
-        if (svc->keychord_id == keychord_id) {
-            return svc;
-        }
-    }
-    return 0;
-}
-
-void service_for_each(void (*func)(struct service *svc))
-{
-    struct listnode *node;
-    struct service *svc;
-    list_for_each(node, &service_list) {
-        svc = node_to_item(node, struct service, slist);
-        func(svc);
-    }
-}
-
-void service_for_each_class(const char *classname,
-                            void (*func)(struct service *svc))
-{
-    struct listnode *node;
-    struct service *svc;
-    list_for_each(node, &service_list) {
-        svc = node_to_item(node, struct service, slist);
-        if (!strcmp(svc->classname, classname)) {
-            func(svc);
-        }
-    }
-}
-
-void service_for_each_flags(unsigned matchflags,
-                            void (*func)(struct service *svc))
-{
-    struct listnode *node;
-    struct service *svc;
-    list_for_each(node, &service_list) {
-        svc = node_to_item(node, struct service, slist);
-        if (svc->flags & matchflags) {
-            func(svc);
-        }
-    }
-}
-
-void action_for_each_trigger(const char *trigger,
-                             void (*func)(struct action *act))
-{
-    struct listnode *node, *node2;
-    struct action *act;
-    struct trigger *cur_trigger;
-
-    list_for_each(node, &action_list) {
-        act = node_to_item(node, struct action, alist);
-        list_for_each(node2, &act->triggers) {
-            cur_trigger = node_to_item(node2, struct trigger, nlist);
-            if (!strcmp(cur_trigger->name, trigger)) {
-                func(act);
+    dirent* current_file;
+    while ((current_file = readdir(config_dir.get()))) {
+        std::string current_path =
+            android::base::StringPrintf("%s/%s", path, current_file->d_name);
+        // Ignore directories and only process regular files.
+        if (current_file->d_type == DT_REG) {
+            if (!init_parse_config_file(current_path.c_str())) {
+                ERROR("could not import file '%s'\n", current_path.c_str());
             }
         }
     }
+    return true;
 }
 
-
-void queue_property_triggers(const char *name, const char *value)
-{
-    struct listnode *node, *node2;
-    struct action *act;
-    struct trigger *cur_trigger;
-    bool match;
-    int name_length;
-
-    list_for_each(node, &action_list) {
-        act = node_to_item(node, struct action, alist);
-            match = !name;
-        list_for_each(node2, &act->triggers) {
-            cur_trigger = node_to_item(node2, struct trigger, nlist);
-            if (!strncmp(cur_trigger->name, "property:", strlen("property:"))) {
-                const char *test = cur_trigger->name + strlen("property:");
-                if (!match) {
-                    name_length = strlen(name);
-                    if (!strncmp(name, test, name_length) &&
-                        test[name_length] == '=' &&
-                        (!strcmp(test + name_length + 1, value) ||
-                        !strcmp(test + name_length + 1, "*"))) {
-                        match = true;
-                        continue;
-                    }
-                } else {
-                     const char* equals = strchr(test, '=');
-                     if (equals) {
-                         char prop_name[PROP_NAME_MAX + 1];
-                         char value[PROP_VALUE_MAX];
-                         int length = equals - test;
-                         if (length <= PROP_NAME_MAX) {
-                             int ret;
-                             memcpy(prop_name, test, length);
-                             prop_name[length] = 0;
-
-                             /* does the property exist, and match the trigger value? */
-                             ret = property_get(prop_name, value);
-                             if (ret > 0 && (!strcmp(equals + 1, value) ||
-                                !strcmp(equals + 1, "*"))) {
-                                 continue;
-                             }
-                         }
-                     }
-                 }
-             }
-             match = false;
-             break;
-        }
-        if (match) {
-            action_add_queue_tail(act);
-        }
+bool init_parse_config(const char* path) {
+    if (is_dir(path)) {
+        return init_parse_config_dir(path);
     }
-}
-
-void queue_all_property_triggers()
-{
-    queue_property_triggers(NULL, NULL);
-}
-
-void queue_builtin_action(int (*func)(int nargs, char **args), const char *name)
-{
-    action* act = (action*) calloc(1, sizeof(*act));
-    trigger* cur_trigger = (trigger*) calloc(1, sizeof(*cur_trigger));
-    cur_trigger->name = name;
-    list_init(&act->triggers);
-    list_add_tail(&act->triggers, &cur_trigger->nlist);
-    list_init(&act->commands);
-    list_init(&act->qlist);
-
-    command* cmd = (command*) calloc(1, sizeof(*cmd));
-    cmd->func = func;
-    cmd->args[0] = const_cast<char*>(name);
-    cmd->nargs = 1;
-    list_add_tail(&act->commands, &cmd->clist);
-
-    list_add_tail(&action_list, &act->alist);
-    action_add_queue_tail(act);
-}
-
-void action_add_queue_tail(struct action *act)
-{
-    if (list_empty(&act->qlist)) {
-        list_add_tail(&action_queue, &act->qlist);
-    }
-}
-
-struct action *action_remove_queue_head(void)
-{
-    if (list_empty(&action_queue)) {
-        return 0;
-    } else {
-        struct listnode *node = list_head(&action_queue);
-        struct action *act = node_to_item(node, struct action, qlist);
-        list_remove(node);
-        list_init(node);
-        return act;
-    }
-}
-
-int action_queue_empty()
-{
-    return list_empty(&action_queue);
-}
-
-service* make_exec_oneshot_service(int nargs, char** args) {
-    // Parse the arguments: exec [SECLABEL [UID [GID]*] --] COMMAND ARGS...
-    // SECLABEL can be a - to denote default
-    int command_arg = 1;
-    for (int i = 1; i < nargs; ++i) {
-        if (strcmp(args[i], "--") == 0) {
-            command_arg = i + 1;
-            break;
-        }
-    }
-    if (command_arg > 4 + NR_SVC_SUPP_GIDS) {
-        ERROR("exec called with too many supplementary group ids\n");
-        return NULL;
-    }
-
-    int argc = nargs - command_arg;
-    char** argv = (args + command_arg);
-    if (argc < 1) {
-        ERROR("exec called without command\n");
-        return NULL;
-    }
-
-    service* svc = (service*) calloc(1, sizeof(*svc) + sizeof(char*) * argc);
-    if (svc == NULL) {
-        ERROR("Couldn't allocate service for exec of '%s': %s", argv[0], strerror(errno));
-        return NULL;
-    }
-
-    if ((command_arg > 2) && strcmp(args[1], "-")) {
-        svc->seclabel = args[1];
-    }
-    if (command_arg > 3) {
-        svc->uid = decode_uid(args[2]);
-    }
-    if (command_arg > 4) {
-        svc->gid = decode_uid(args[3]);
-        svc->nr_supp_gids = command_arg - 1 /* -- */ - 4 /* exec SECLABEL UID GID */;
-        for (size_t i = 0; i < svc->nr_supp_gids; ++i) {
-            svc->supp_gids[i] = decode_uid(args[4 + i]);
-        }
-    }
-
-    static int exec_count; // Every service needs a unique name.
-    char* name = NULL;
-    asprintf(&name, "exec %d (%s)", exec_count++, argv[0]);
-    if (name == NULL) {
-        ERROR("Couldn't allocate name for exec service '%s'\n", argv[0]);
-        free(svc);
-        return NULL;
-    }
-    svc->name = name;
-    svc->classname = "default";
-    svc->flags = SVC_EXEC | SVC_ONESHOT;
-    svc->nargs = argc;
-    memcpy(svc->args, argv, sizeof(char*) * svc->nargs);
-    svc->args[argc] = NULL;
-    list_add_tail(&service_list, &svc->slist);
-    return svc;
+    return init_parse_config_file(path);
 }
 
 static void *parse_service(struct parse_state *state, int nargs, char **args)
 {
     if (nargs < 3) {
         parse_error(state, "services must have a name and a program\n");
-        return 0;
+        return nullptr;
     }
-    if (!valid_name(args[1])) {
-        parse_error(state, "invalid service name '%s'\n", args[1]);
-        return 0;
-    }
+    std::vector<std::string> str_args(args + 2, args + nargs);
+    std::string ret_err;
+    Service* svc = ServiceManager::GetInstance().AddNewService(args[1], "default",
+                                                               str_args, &ret_err);
 
-    service* svc = (service*) service_find_by_name(args[1]);
-    if (svc) {
-        parse_error(state, "ignored duplicate definition of service '%s'\n", args[1]);
-        return 0;
-    }
-
-    nargs -= 2;
-    svc = (service*) calloc(1, sizeof(*svc) + sizeof(char*) * nargs);
     if (!svc) {
-        parse_error(state, "out of memory\n");
-        return 0;
+        parse_error(state, "%s\n", ret_err.c_str());
     }
-    svc->name = strdup(args[1]);
-    svc->classname = "default";
-    memcpy(svc->args, args + 2, sizeof(char*) * nargs);
-    trigger* cur_trigger = (trigger*) calloc(1, sizeof(*cur_trigger));
-    svc->args[nargs] = 0;
-    svc->nargs = nargs;
-    list_init(&svc->onrestart.triggers);
-    cur_trigger->name = "onrestart";
-    list_add_tail(&svc->onrestart.triggers, &cur_trigger->nlist);
-    list_init(&svc->onrestart.commands);
-    list_add_tail(&service_list, &svc->slist);
+
     return svc;
 }
 
 static void parse_line_service(struct parse_state *state, int nargs, char **args)
 {
-    struct service *svc = (service*) state->context;
-    struct command *cmd;
-    int i, kw, kw_nargs;
-
     if (nargs == 0) {
         return;
     }
 
-    svc->ioprio_class = IoSchedClass_NONE;
+    Service* svc = static_cast<Service*>(state->context);
+    int kw = lookup_keyword(args[0]);
+    std::vector<std::string> str_args(args, args + nargs);
+    std::string ret_err;
+    bool ret = svc->HandleLine(kw, str_args, &ret_err);
 
-    kw = lookup_keyword(args[0]);
-    switch (kw) {
-    case K_class:
-        if (nargs != 2) {
-            parse_error(state, "class option requires a classname\n");
-        } else {
-            svc->classname = args[1];
-        }
-        break;
-    case K_console:
-        svc->flags |= SVC_CONSOLE;
-        break;
-    case K_disabled:
-        svc->flags |= SVC_DISABLED;
-        svc->flags |= SVC_RC_DISABLED;
-        break;
-    case K_ioprio:
-        if (nargs != 3) {
-            parse_error(state, "ioprio optin usage: ioprio <rt|be|idle> <ioprio 0-7>\n");
-        } else {
-            svc->ioprio_pri = strtoul(args[2], 0, 8);
-
-            if (svc->ioprio_pri < 0 || svc->ioprio_pri > 7) {
-                parse_error(state, "priority value must be range 0 - 7\n");
-                break;
-            }
-
-            if (!strcmp(args[1], "rt")) {
-                svc->ioprio_class = IoSchedClass_RT;
-            } else if (!strcmp(args[1], "be")) {
-                svc->ioprio_class = IoSchedClass_BE;
-            } else if (!strcmp(args[1], "idle")) {
-                svc->ioprio_class = IoSchedClass_IDLE;
-            } else {
-                parse_error(state, "ioprio option usage: ioprio <rt|be|idle> <0-7>\n");
-            }
-        }
-        break;
-    case K_group:
-        if (nargs < 2) {
-            parse_error(state, "group option requires a group id\n");
-        } else if (nargs > NR_SVC_SUPP_GIDS + 2) {
-            parse_error(state, "group option accepts at most %d supp. groups\n",
-                        NR_SVC_SUPP_GIDS);
-        } else {
-            int n;
-            svc->gid = decode_uid(args[1]);
-            for (n = 2; n < nargs; n++) {
-                svc->supp_gids[n-2] = decode_uid(args[n]);
-            }
-            svc->nr_supp_gids = n - 2;
-        }
-        break;
-    case K_keycodes:
-        if (nargs < 2) {
-            parse_error(state, "keycodes option requires atleast one keycode\n");
-        } else {
-            svc->keycodes = (int*) malloc((nargs - 1) * sizeof(svc->keycodes[0]));
-            if (!svc->keycodes) {
-                parse_error(state, "could not allocate keycodes\n");
-            } else {
-                svc->nkeycodes = nargs - 1;
-                for (i = 1; i < nargs; i++) {
-                    svc->keycodes[i - 1] = atoi(args[i]);
-                }
-            }
-        }
-        break;
-    case K_oneshot:
-        svc->flags |= SVC_ONESHOT;
-        break;
-    case K_onrestart:
-        nargs--;
-        args++;
-        kw = lookup_keyword(args[0]);
-        if (!kw_is(kw, COMMAND)) {
-            parse_error(state, "invalid command '%s'\n", args[0]);
-            break;
-        }
-        kw_nargs = kw_nargs(kw);
-        if (nargs < kw_nargs) {
-            parse_error(state, "%s requires %d %s\n", args[0], kw_nargs - 1,
-                kw_nargs > 2 ? "arguments" : "argument");
-            break;
-        }
-
-        cmd = (command*) malloc(sizeof(*cmd) + sizeof(char*) * nargs);
-        cmd->func = kw_func(kw);
-        cmd->nargs = nargs;
-        memcpy(cmd->args, args, sizeof(char*) * nargs);
-        list_add_tail(&svc->onrestart.commands, &cmd->clist);
-        break;
-    case K_critical:
-        svc->flags |= SVC_CRITICAL;
-        break;
-    case K_setenv: { /* name value */
-        if (nargs < 3) {
-            parse_error(state, "setenv option requires name and value arguments\n");
-            break;
-        }
-        svcenvinfo* ei = (svcenvinfo*) calloc(1, sizeof(*ei));
-        if (!ei) {
-            parse_error(state, "out of memory\n");
-            break;
-        }
-        ei->name = args[1];
-        ei->value = args[2];
-        ei->next = svc->envvars;
-        svc->envvars = ei;
-        break;
-    }
-    case K_socket: {/* name type perm [ uid gid context ] */
-        if (nargs < 4) {
-            parse_error(state, "socket option requires name, type, perm arguments\n");
-            break;
-        }
-        if (strcmp(args[2],"dgram") && strcmp(args[2],"stream")
-                && strcmp(args[2],"seqpacket")) {
-            parse_error(state, "socket type must be 'dgram', 'stream' or 'seqpacket'\n");
-            break;
-        }
-        socketinfo* si = (socketinfo*) calloc(1, sizeof(*si));
-        if (!si) {
-            parse_error(state, "out of memory\n");
-            break;
-        }
-        si->name = args[1];
-        si->type = args[2];
-        si->perm = strtoul(args[3], 0, 8);
-        if (nargs > 4)
-            si->uid = decode_uid(args[4]);
-        if (nargs > 5)
-            si->gid = decode_uid(args[5]);
-        if (nargs > 6)
-            si->socketcon = args[6];
-        si->next = svc->sockets;
-        svc->sockets = si;
-        break;
-    }
-    case K_user:
-        if (nargs != 2) {
-            parse_error(state, "user option requires a user id\n");
-        } else {
-            svc->uid = decode_uid(args[1]);
-        }
-        break;
-    case K_seclabel:
-        if (nargs != 2) {
-            parse_error(state, "seclabel option requires a label string\n");
-        } else {
-            svc->seclabel = args[1];
-        }
-        break;
-    case K_writepid:
-        if (nargs < 2) {
-            parse_error(state, "writepid option requires at least one filename\n");
-            break;
-        }
-        svc->writepid_files_ = new std::vector<std::string>;
-        for (int i = 1; i < nargs; ++i) {
-            svc->writepid_files_->push_back(args[i]);
-        }
-        break;
-
-    default:
-        parse_error(state, "invalid option '%s'\n", args[0]);
+    if (!ret) {
+        parse_error(state, "%s\n", ret_err.c_str());
     }
 }
 
-static void *parse_action(struct parse_state *state, int nargs, char **args)
+static void *parse_action(struct parse_state* state, int nargs, char **args)
 {
-    struct trigger *cur_trigger;
-    int i;
-    if (nargs < 2) {
-        parse_error(state, "actions must have a trigger\n");
-        return 0;
+    std::string ret_err;
+    std::vector<std::string> triggers(args + 1, args + nargs);
+    Action* ret = ActionManager::GetInstance().AddNewAction(triggers, &ret_err);
+
+    if (!ret) {
+        parse_error(state, "%s\n", ret_err.c_str());
     }
 
-    action* act = (action*) calloc(1, sizeof(*act));
-    list_init(&act->triggers);
+    return ret;
+}
 
-    for (i = 1; i < nargs; i++) {
-        if (!(i % 2)) {
-            if (strcmp(args[i], "&&")) {
-                struct listnode *node;
-                struct listnode *node2;
-                parse_error(state, "& is the only symbol allowed to concatenate actions\n");
-                list_for_each_safe(node, node2, &act->triggers) {
-                    struct trigger *trigger = node_to_item(node, struct trigger, nlist);
-                    free(trigger);
-                }
-                free(act);
-                return 0;
-            } else
-                continue;
-        }
-        cur_trigger = (trigger*) calloc(1, sizeof(*cur_trigger));
-        cur_trigger->name = args[i];
-        list_add_tail(&act->triggers, &cur_trigger->nlist);
+bool add_command_to_action(Action* action, const std::vector<std::string>& args,
+                           const std::string& filename, int line, std::string* err)
+{
+    int kw;
+    size_t n;
+
+    kw = lookup_keyword(args[0].c_str());
+    if (!kw_is(kw, COMMAND)) {
+        *err = android::base::StringPrintf("invalid command '%s'\n", args[0].c_str());
+        return false;
     }
 
-    list_init(&act->commands);
-    list_init(&act->qlist);
-    list_add_tail(&action_list, &act->alist);
-        /* XXX add to hash */
-    return act;
+    n = kw_nargs(kw);
+    if (args.size() < n) {
+        *err = android::base::StringPrintf("%s requires %zu %s\n",
+                                           args[0].c_str(), n - 1,
+                                           n > 2 ? "arguments" : "argument");
+        return false;
+    }
+
+    action->AddCommand(kw_func(kw), args, filename, line);
+    return true;
 }
 
 static void parse_line_action(struct parse_state* state, int nargs, char **args)
 {
-    struct action *act = (action*) state->context;
-    int kw, n;
-
     if (nargs == 0) {
         return;
     }
 
-    kw = lookup_keyword(args[0]);
-    if (!kw_is(kw, COMMAND)) {
-        parse_error(state, "invalid command '%s'\n", args[0]);
-        return;
+    Action* action = static_cast<Action*>(state->context);
+    std::vector<std::string> str_args(args, args + nargs);
+    std::string ret_err;
+    bool ret = add_command_to_action(action, str_args, state->filename,
+                                     state->line, &ret_err);
+    if (!ret) {
+        parse_error(state, "%s\n", ret_err.c_str());
     }
-
-    n = kw_nargs(kw);
-    if (nargs < n) {
-        parse_error(state, "%s requires %d %s\n", args[0], n - 1,
-            n > 2 ? "arguments" : "argument");
-        return;
-    }
-    command* cmd = (command*) malloc(sizeof(*cmd) + sizeof(char*) * nargs);
-    cmd->func = kw_func(kw);
-    cmd->line = state->line;
-    cmd->filename = state->filename;
-    cmd->nargs = nargs;
-    memcpy(cmd->args, args, sizeof(char*) * nargs);
-    list_add_tail(&act->commands, &cmd->clist);
 }
diff --git a/init/init_parser.h b/init/init_parser.h
index 90f880f..709dca8 100644
--- a/init/init_parser.h
+++ b/init/init_parser.h
@@ -17,23 +17,16 @@
 #ifndef _INIT_INIT_PARSER_H_
 #define _INIT_INIT_PARSER_H_
 
+#include <string>
+#include <vector>
+
 #define INIT_PARSER_MAXARGS 64
 
-struct action;
-struct service;
+class Action;
 
-struct action *action_remove_queue_head(void);
-void action_add_queue_tail(struct action *act);
-void action_for_each_trigger(const char *trigger,
-                             void (*func)(struct action *act));
-int action_queue_empty(void);
-void queue_property_triggers(const char *name, const char *value);
-void queue_all_property_triggers();
-void queue_builtin_action(int (*func)(int nargs, char **args), const char *name);
-
-bool init_parse_config_file(const char* path);
-int expand_props(char *dst, const char *src, int len);
-
-service* make_exec_oneshot_service(int argc, char** argv);
+bool init_parse_config(const char* path);
+int expand_props(const std::string& src, std::string* dst);
+bool add_command_to_action(Action* action, const std::vector<std::string>& args,
+                           const std::string& filename, int line, std::string* err);
 
 #endif
diff --git a/init/init_parser_test.cpp b/init/init_parser_test.cpp
index 170a73a..52aaa37 100644
--- a/init/init_parser_test.cpp
+++ b/init/init_parser_test.cpp
@@ -17,96 +17,97 @@
 #include "init_parser.h"
 
 #include "init.h"
+#include "service.h"
 #include "util.h"
 
 #include <errno.h>
 #include <gtest/gtest.h>
 
-TEST(init_parser, make_exec_oneshot_service_invalid_syntax) {
-    char* argv[10];
-    memset(argv, 0, sizeof(argv));
+#include <string>
+#include <vector>
 
+TEST(init_parser, make_exec_oneshot_service_invalid_syntax) {
+    ServiceManager& sm = ServiceManager::GetInstance();
+    std::vector<std::string> args;
     // Nothing.
-    ASSERT_EQ(nullptr, make_exec_oneshot_service(0, argv));
+    ASSERT_EQ(nullptr, sm.MakeExecOneshotService(args));
 
     // No arguments to 'exec'.
-    argv[0] = const_cast<char*>("exec");
-    ASSERT_EQ(nullptr, make_exec_oneshot_service(1, argv));
+    args.push_back("exec");
+    ASSERT_EQ(nullptr, sm.MakeExecOneshotService(args));
 
     // No command in "exec --".
-    argv[1] = const_cast<char*>("--");
-    ASSERT_EQ(nullptr, make_exec_oneshot_service(2, argv));
+    args.push_back("--");
+    ASSERT_EQ(nullptr, sm.MakeExecOneshotService(args));
 }
 
 TEST(init_parser, make_exec_oneshot_service_too_many_supplementary_gids) {
-    int argc = 0;
-    char* argv[4 + NR_SVC_SUPP_GIDS + 3];
-    argv[argc++] = const_cast<char*>("exec");
-    argv[argc++] = const_cast<char*>("seclabel");
-    argv[argc++] = const_cast<char*>("root"); // uid.
-    argv[argc++] = const_cast<char*>("root"); // gid.
+    ServiceManager& sm = ServiceManager::GetInstance();
+    std::vector<std::string> args;
+    args.push_back("exec");
+    args.push_back("seclabel");
+    args.push_back("root"); // uid.
+    args.push_back("root"); // gid.
     for (int i = 0; i < NR_SVC_SUPP_GIDS; ++i) {
-        argv[argc++] = const_cast<char*>("root"); // Supplementary gid.
+        args.push_back("root"); // Supplementary gid.
     }
-    argv[argc++] = const_cast<char*>("--");
-    argv[argc++] = const_cast<char*>("/system/bin/id");
-    argv[argc] = nullptr;
-    ASSERT_EQ(nullptr, make_exec_oneshot_service(argc, argv));
+    args.push_back("--");
+    args.push_back("/system/bin/id");
+    ASSERT_EQ(nullptr, sm.MakeExecOneshotService(args));
 }
 
-static void Test_make_exec_oneshot_service(bool dash_dash, bool seclabel, bool uid, bool gid, bool supplementary_gids) {
-    int argc = 0;
-    char* argv[10];
-    argv[argc++] = const_cast<char*>("exec");
+static void Test_make_exec_oneshot_service(bool dash_dash, bool seclabel, bool uid,
+                                           bool gid, bool supplementary_gids) {
+    ServiceManager& sm = ServiceManager::GetInstance();
+    std::vector<std::string> args;
+    args.push_back("exec");
     if (seclabel) {
-        argv[argc++] = const_cast<char*>("u:r:su:s0"); // seclabel
+        args.push_back("u:r:su:s0"); // seclabel
         if (uid) {
-            argv[argc++] = const_cast<char*>("log");      // uid
+            args.push_back("log");      // uid
             if (gid) {
-                argv[argc++] = const_cast<char*>("shell");     // gid
+                args.push_back("shell");     // gid
                 if (supplementary_gids) {
-                    argv[argc++] = const_cast<char*>("system");    // supplementary gid 0
-                    argv[argc++] = const_cast<char*>("adb");       // supplementary gid 1
+                    args.push_back("system");    // supplementary gid 0
+                    args.push_back("adb");       // supplementary gid 1
                 }
             }
         }
     }
     if (dash_dash) {
-        argv[argc++] = const_cast<char*>("--");
+        args.push_back("--");
     }
-    argv[argc++] = const_cast<char*>("/system/bin/toybox");
-    argv[argc++] = const_cast<char*>("id");
-    argv[argc] = nullptr;
-    service* svc = make_exec_oneshot_service(argc, argv);
+    args.push_back("/system/bin/toybox");
+    args.push_back("id");
+    Service* svc = sm.MakeExecOneshotService(args);
     ASSERT_NE(nullptr, svc);
 
     if (seclabel) {
-        ASSERT_STREQ("u:r:su:s0", svc->seclabel);
+        ASSERT_EQ("u:r:su:s0", svc->seclabel());
     } else {
-        ASSERT_EQ(nullptr, svc->seclabel);
+        ASSERT_EQ("", svc->seclabel());
     }
     if (uid) {
-        ASSERT_EQ(decode_uid("log"), svc->uid);
+        ASSERT_EQ(decode_uid("log"), svc->uid());
     } else {
-        ASSERT_EQ(0U, svc->uid);
+        ASSERT_EQ(0U, svc->uid());
     }
     if (gid) {
-        ASSERT_EQ(decode_uid("shell"), svc->gid);
+        ASSERT_EQ(decode_uid("shell"), svc->gid());
     } else {
-        ASSERT_EQ(0U, svc->gid);
+        ASSERT_EQ(0U, svc->gid());
     }
     if (supplementary_gids) {
-        ASSERT_EQ(2U, svc->nr_supp_gids);
-        ASSERT_EQ(decode_uid("system"), svc->supp_gids[0]);
-        ASSERT_EQ(decode_uid("adb"), svc->supp_gids[1]);
+        ASSERT_EQ(2U, svc->supp_gids().size());
+        ASSERT_EQ(decode_uid("system"), svc->supp_gids()[0]);
+        ASSERT_EQ(decode_uid("adb"), svc->supp_gids()[1]);
     } else {
-        ASSERT_EQ(0U, svc->nr_supp_gids);
+        ASSERT_EQ(0U, svc->supp_gids().size());
     }
 
-    ASSERT_EQ(2, svc->nargs);
-    ASSERT_EQ("/system/bin/toybox", svc->args[0]);
-    ASSERT_EQ("id", svc->args[1]);
-    ASSERT_EQ(nullptr, svc->args[2]);
+    ASSERT_EQ(static_cast<std::size_t>(2), svc->args().size());
+    ASSERT_EQ("/system/bin/toybox", svc->args()[0]);
+    ASSERT_EQ("id", svc->args()[1]);
 }
 
 TEST(init_parser, make_exec_oneshot_service_with_everything) {
diff --git a/init/keychords.cpp b/init/keychords.cpp
index 10d9573..7a7838d 100644
--- a/init/keychords.cpp
+++ b/init/keychords.cpp
@@ -26,20 +26,21 @@
 #include "init.h"
 #include "log.h"
 #include "property_service.h"
+#include "service.h"
 
 static struct input_keychord *keychords = 0;
 static int keychords_count = 0;
 static int keychords_length = 0;
 static int keychord_fd = -1;
 
-void add_service_keycodes(struct service *svc)
+void add_service_keycodes(Service* svc)
 {
     struct input_keychord *keychord;
-    int i, size;
+    size_t i, size;
 
-    if (svc->keycodes) {
+    if (!svc->keycodes().empty()) {
         /* add a new keychord to the list */
-        size = sizeof(*keychord) + svc->nkeycodes * sizeof(keychord->keycodes[0]);
+        size = sizeof(*keychord) + svc->keycodes().size() * sizeof(keychord->keycodes[0]);
         keychords = (input_keychord*) realloc(keychords, keychords_length + size);
         if (!keychords) {
             ERROR("could not allocate keychords\n");
@@ -51,11 +52,11 @@
         keychord = (struct input_keychord *)((char *)keychords + keychords_length);
         keychord->version = KEYCHORD_VERSION;
         keychord->id = keychords_count + 1;
-        keychord->count = svc->nkeycodes;
-        svc->keychord_id = keychord->id;
+        keychord->count = svc->keycodes().size();
+        svc->set_keychord_id(keychord->id);
 
-        for (i = 0; i < svc->nkeycodes; i++) {
-            keychord->keycodes[i] = svc->keycodes[i];
+        for (i = 0; i < svc->keycodes().size(); i++) {
+            keychord->keycodes[i] = svc->keycodes()[i];
         }
         keychords_count++;
         keychords_length += size;
@@ -63,24 +64,22 @@
 }
 
 static void handle_keychord() {
-    struct service *svc;
-    char adb_enabled[PROP_VALUE_MAX];
     int ret;
     __u16 id;
 
-    // Only handle keychords if adb is enabled.
-    property_get("init.svc.adbd", adb_enabled);
     ret = read(keychord_fd, &id, sizeof(id));
     if (ret != sizeof(id)) {
         ERROR("could not read keychord id\n");
         return;
     }
 
-    if (!strcmp(adb_enabled, "running")) {
-        svc = service_find_by_keychord(id);
+    // Only handle keychords if adb is enabled.
+    std::string adb_enabled = property_get("init.svc.adbd");
+    if (adb_enabled == "running") {
+        Service* svc = ServiceManager::GetInstance().FindServiceByKeychord(id);
         if (svc) {
-            INFO("Starting service %s from keychord\n", svc->name);
-            service_start(svc, NULL);
+            INFO("Starting service %s from keychord\n", svc->name().c_str());
+            svc->Start();
         } else {
             ERROR("service for keychord %d not found\n", id);
         }
@@ -88,7 +87,7 @@
 }
 
 void keychord_init() {
-    service_for_each(add_service_keycodes);
+    ServiceManager::GetInstance().ForEachService(add_service_keycodes);
 
     // Nothing to do if no services require keychords.
     if (!keychords) {
diff --git a/init/keywords.h b/init/keywords.h
index e637d7d..922feee 100644
--- a/init/keywords.h
+++ b/init/keywords.h
@@ -1,43 +1,45 @@
 #ifndef KEYWORD
-int do_bootchart_init(int nargs, char **args);
-int do_class_start(int nargs, char **args);
-int do_class_stop(int nargs, char **args);
-int do_class_reset(int nargs, char **args);
-int do_domainname(int nargs, char **args);
-int do_enable(int nargs, char **args);
-int do_exec(int nargs, char **args);
-int do_export(int nargs, char **args);
-int do_hostname(int nargs, char **args);
-int do_ifup(int nargs, char **args);
-int do_insmod(int nargs, char **args);
-int do_installkey(int nargs, char **args);
-int do_mkdir(int nargs, char **args);
-int do_mount_all(int nargs, char **args);
-int do_mount(int nargs, char **args);
-int do_powerctl(int nargs, char **args);
-int do_restart(int nargs, char **args);
-int do_restorecon(int nargs, char **args);
-int do_restorecon_recursive(int nargs, char **args);
-int do_rm(int nargs, char **args);
-int do_rmdir(int nargs, char **args);
-int do_setprop(int nargs, char **args);
-int do_setrlimit(int nargs, char **args);
-int do_start(int nargs, char **args);
-int do_stop(int nargs, char **args);
-int do_swapon_all(int nargs, char **args);
-int do_trigger(int nargs, char **args);
-int do_symlink(int nargs, char **args);
-int do_sysclktz(int nargs, char **args);
-int do_write(int nargs, char **args);
-int do_copy(int nargs, char **args);
-int do_chown(int nargs, char **args);
-int do_chmod(int nargs, char **args);
-int do_loglevel(int nargs, char **args);
-int do_load_persist_props(int nargs, char **args);
-int do_load_all_props(int nargs, char **args);
-int do_verity_load_state(int nargs, char **args);
-int do_verity_update_state(int nargs, char **args);
-int do_wait(int nargs, char **args);
+#include <string>
+#include <vector>
+int do_bootchart_init(const std::vector<std::string>& args);
+int do_class_start(const std::vector<std::string>& args);
+int do_class_stop(const std::vector<std::string>& args);
+int do_class_reset(const std::vector<std::string>& args);
+int do_domainname(const std::vector<std::string>& args);
+int do_enable(const std::vector<std::string>& args);
+int do_exec(const std::vector<std::string>& args);
+int do_export(const std::vector<std::string>& args);
+int do_hostname(const std::vector<std::string>& args);
+int do_ifup(const std::vector<std::string>& args);
+int do_insmod(const std::vector<std::string>& args);
+int do_installkey(const std::vector<std::string>& args);
+int do_mkdir(const std::vector<std::string>& args);
+int do_mount_all(const std::vector<std::string>& args);
+int do_mount(const std::vector<std::string>& args);
+int do_powerctl(const std::vector<std::string>& args);
+int do_restart(const std::vector<std::string>& args);
+int do_restorecon(const std::vector<std::string>& args);
+int do_restorecon_recursive(const std::vector<std::string>& args);
+int do_rm(const std::vector<std::string>& args);
+int do_rmdir(const std::vector<std::string>& args);
+int do_setprop(const std::vector<std::string>& args);
+int do_setrlimit(const std::vector<std::string>& args);
+int do_start(const std::vector<std::string>& args);
+int do_stop(const std::vector<std::string>& args);
+int do_swapon_all(const std::vector<std::string>& args);
+int do_trigger(const std::vector<std::string>& args);
+int do_symlink(const std::vector<std::string>& args);
+int do_sysclktz(const std::vector<std::string>& args);
+int do_write(const std::vector<std::string>& args);
+int do_copy(const std::vector<std::string>& args);
+int do_chown(const std::vector<std::string>& args);
+int do_chmod(const std::vector<std::string>& args);
+int do_loglevel(const std::vector<std::string>& args);
+int do_load_persist_props(const std::vector<std::string>& args);
+int do_load_all_props(const std::vector<std::string>& args);
+int do_verity_load_state(const std::vector<std::string>& args);
+int do_verity_update_state(const std::vector<std::string>& args);
+int do_wait(const std::vector<std::string>& args);
 #define __MAKE_KEYWORD_ENUM__
 #define KEYWORD(symbol, flags, nargs, func) K_##symbol,
 enum {
diff --git a/init/log.h b/init/log.h
index b804d1f..c5c30af 100644
--- a/init/log.h
+++ b/init/log.h
@@ -20,8 +20,11 @@
 #include <cutils/klog.h>
 
 #define ERROR(x...)   init_klog_write(KLOG_ERROR_LEVEL, x)
+#define WARNING(x...) init_klog_write(KLOG_WARNING_LEVEL, x)
 #define NOTICE(x...)  init_klog_write(KLOG_NOTICE_LEVEL, x)
 #define INFO(x...)    init_klog_write(KLOG_INFO_LEVEL, x)
+#define DEBUG(x...)   init_klog_write(KLOG_DEBUG_LEVEL, x)
+#define VERBOSE(x...) init_klog_write(KLOG_DEBUG_LEVEL, x)
 
 void init_klog_write(int level, const char* fmt, ...) __printflike(2, 3);
 int selinux_klog_callback(int level, const char* fmt, ...) __printflike(2, 3);
diff --git a/init/parser/tokenizer.cpp b/init/parser/tokenizer.cpp
new file mode 100644
index 0000000..340e0d9
--- /dev/null
+++ b/init/parser/tokenizer.cpp
@@ -0,0 +1,129 @@
+// 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 "tokenizer.h"
+
+namespace init {
+
+Tokenizer::Tokenizer(const std::string& data)
+    : data_(data), eof_(false), pos_(0), tok_start_(0) {
+  current_.type = TOK_START;
+
+  if (data.size() > 0) {
+    cur_char_ = data[0];
+  } else {
+    eof_ = true;
+    cur_char_ = '\0';
+  }
+}
+
+Tokenizer::~Tokenizer() {}
+
+const Tokenizer::Token& Tokenizer::current() {
+  return current_;
+}
+
+bool Tokenizer::Next() {
+  while (!eof_) {
+    AdvWhiteSpace();
+
+    // Check for comments.
+    if (cur_char_ == '#') {
+      AdvChar();
+      // Skip rest of line
+      while (!eof_ && cur_char_ != '\n') {
+        AdvChar();
+      }
+    }
+
+    if (eof_) {
+      break;
+    }
+
+    if (cur_char_ == '\0') {
+      AdvChar();
+    } else if (cur_char_ == '\n') {
+      current_.type = TOK_NEWLINE;
+      current_.text.clear();
+      AdvChar();
+      return true;
+    } else if (cur_char_ == '\\') {
+      AdvChar();  // skip backslash
+      // This is line continuation so
+      // do not generated TOK_NEWLINE at
+      // the next \n.
+      AdvUntil('\n');
+      AdvChar();  // skip \n
+    } else if (cur_char_ == '\"') {
+      AdvChar();
+      StartText();
+      // Grab everything until the next quote.
+      AdvUntil('\"');
+      EndText();
+      AdvChar();  // skip quote.
+      return true;
+    } else {
+      StartText();
+      AdvText();
+      EndText();
+      return true;
+    }
+  }
+  current_.type = TOK_END;
+  current_.text.clear();
+  return false;
+}
+
+void Tokenizer::AdvChar() {
+  pos_++;
+  if (pos_ < data_.size()) {
+    cur_char_ = data_[pos_];
+  } else {
+    eof_ = true;
+    cur_char_ = '\0';
+  }
+}
+
+void Tokenizer::AdvWhiteSpace() {
+  while (cur_char_ == '\t' || cur_char_ == '\r' || cur_char_ == ' ') {
+    AdvChar();
+  }
+}
+
+void Tokenizer::AdvUntil(char x) {
+  while (!eof_ && cur_char_ != x) {
+    AdvChar();
+  }
+}
+
+void Tokenizer::AdvText() {
+  while (cur_char_ != '\t' && cur_char_ != '\r' && cur_char_ != '\0' &&
+         cur_char_ != ' ' && cur_char_ != '\n' && cur_char_ != '#') {
+    AdvChar();
+  }
+}
+
+void Tokenizer::StartText() {
+  current_.text.clear();
+  tok_start_ = pos_;
+  current_.type = TOK_TEXT;
+}
+
+void Tokenizer::EndText() {
+  if (pos_ != tok_start_) {
+    current_.text.append(data_, tok_start_, pos_ - tok_start_);
+  }
+}
+
+}  // namespace init
\ No newline at end of file
diff --git a/init/parser/tokenizer.h b/init/parser/tokenizer.h
new file mode 100644
index 0000000..8312a08
--- /dev/null
+++ b/init/parser/tokenizer.h
@@ -0,0 +1,74 @@
+// 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 _INIT_PARSER_TOKENIZER_H
+#define _INIT_PARSER_TOKENIZER_H
+
+#include <string>
+
+namespace init {
+
+// Used to tokenize a std::string.
+// Call Next() to advance through each token until it returns false,
+// indicating there are no more tokens left in the string.
+// The current token can be accessed with current(), which returns
+// a Token.
+// Supported tokens are:
+// TOK_START - Next() has yet to be called
+// TOK_END - At the end of string
+// TOK_NEWLINE - The end of a line denoted by \n.
+// TOK_TEXT - A word.
+// Comments are denoted with '#' and the tokenizer will ignore
+// the rest of the line.
+// Double quotes can be used to insert whitespace into words.
+// A backslash at the end of a line denotes continuation and
+// a TOK_NEWLINE will not be generated for that line.
+class Tokenizer {
+ public:
+  Tokenizer(const std::string& data);
+  ~Tokenizer();
+
+  enum TokenType { TOK_START, TOK_END, TOK_NEWLINE, TOK_TEXT };
+  struct Token {
+    TokenType type;
+    std::string text;
+  };
+
+  // Returns the curret token.
+  const Token& current();
+
+  // Move to the next token, returns false at the end of input.
+  bool Next();
+
+ private:
+  void GetData();
+  void AdvChar();
+  void AdvText();
+  void AdvUntil(char x);
+  void AdvWhiteSpace();
+  void StartText();
+  void EndText();
+
+  const std::string& data_;
+  Token current_;
+
+  bool eof_;
+  size_t pos_;
+  char cur_char_;
+  size_t tok_start_;
+};
+
+}  // namespace init
+
+#endif
diff --git a/init/parser/tokenizer_test.cpp b/init/parser/tokenizer_test.cpp
new file mode 100644
index 0000000..c4a48df
--- /dev/null
+++ b/init/parser/tokenizer_test.cpp
@@ -0,0 +1,230 @@
+// Copyright (C) 2015 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "tokenizer.h"
+
+#include <errno.h>
+#include <gtest/gtest.h>
+
+#include <string>
+
+namespace init {
+
+#define SETUP_TEST(test_data)  \
+  std::string data(test_data); \
+  Tokenizer tokenizer(data);   \
+  ASSERT_EQ(Tokenizer::TOK_START, tokenizer.current().type)
+
+#define ASSERT_TEXT_TOKEN(test_text)              \
+  ASSERT_TRUE(tokenizer.Next());                  \
+  ASSERT_EQ(test_text, tokenizer.current().text); \
+  ASSERT_EQ(Tokenizer::TOK_TEXT, tokenizer.current().type)
+
+#define ASSERT_NEWLINE_TOKEN()   \
+  ASSERT_TRUE(tokenizer.Next()); \
+  ASSERT_EQ(Tokenizer::TOK_NEWLINE, tokenizer.current().type)
+
+TEST(Tokenizer, Empty) {
+  SETUP_TEST("");
+  ASSERT_FALSE(tokenizer.Next());
+}
+
+TEST(Tokenizer, Simple) {
+  SETUP_TEST("test");
+  ASSERT_TEXT_TOKEN("test");
+  ASSERT_FALSE(tokenizer.Next());
+}
+
+TEST(Tokenizer, LeadingWhiteSpace) {
+  SETUP_TEST(" \t  \r  test");
+  ASSERT_TEXT_TOKEN("test");
+  ASSERT_FALSE(tokenizer.Next());
+}
+
+TEST(Tokenizer, TrailingWhiteSpace) {
+  SETUP_TEST("test \t  \r  ");
+  ASSERT_TEXT_TOKEN("test");
+  ASSERT_FALSE(tokenizer.Next());
+}
+
+TEST(Tokenizer, WhiteSpace) {
+  SETUP_TEST(" \t  \r  test \t  \r  ");
+  ASSERT_TEXT_TOKEN("test");
+
+  ASSERT_FALSE(tokenizer.Next());
+}
+
+TEST(Tokenizer, TwoTokens) {
+  SETUP_TEST("  foo   bar ");
+  ASSERT_TEXT_TOKEN("foo");
+  ASSERT_TEXT_TOKEN("bar");
+
+  ASSERT_FALSE(tokenizer.Next());
+}
+
+TEST(Tokenizer, MultiToken) {
+  SETUP_TEST("one two three four five");
+  ASSERT_TEXT_TOKEN("one");
+  ASSERT_TEXT_TOKEN("two");
+  ASSERT_TEXT_TOKEN("three");
+  ASSERT_TEXT_TOKEN("four");
+  ASSERT_TEXT_TOKEN("five");
+
+  ASSERT_FALSE(tokenizer.Next());
+}
+
+TEST(Tokenizer, NewLine) {
+  SETUP_TEST("\n");
+  ASSERT_NEWLINE_TOKEN();
+
+  ASSERT_FALSE(tokenizer.Next());
+}
+
+TEST(Tokenizer, TextNewLine) {
+  SETUP_TEST("test\n");
+  ASSERT_TEXT_TOKEN("test");
+  ASSERT_NEWLINE_TOKEN();
+
+  ASSERT_FALSE(tokenizer.Next());
+}
+
+TEST(Tokenizer, MultiTextNewLine) {
+  SETUP_TEST("one\ntwo\nthree\n");
+  ASSERT_TEXT_TOKEN("one");
+  ASSERT_NEWLINE_TOKEN();
+  ASSERT_TEXT_TOKEN("two");
+  ASSERT_NEWLINE_TOKEN();
+  ASSERT_TEXT_TOKEN("three");
+  ASSERT_NEWLINE_TOKEN();
+
+  ASSERT_FALSE(tokenizer.Next());
+}
+
+TEST(Tokenizer, MultiTextNewLineNoLineEnding) {
+  SETUP_TEST("one\ntwo\nthree");
+  ASSERT_TEXT_TOKEN("one");
+  ASSERT_NEWLINE_TOKEN();
+  ASSERT_TEXT_TOKEN("two");
+  ASSERT_NEWLINE_TOKEN();
+  ASSERT_TEXT_TOKEN("three");
+
+  ASSERT_FALSE(tokenizer.Next());
+}
+
+TEST(Tokenizer, Comment) {
+  SETUP_TEST("#test");
+  ASSERT_FALSE(tokenizer.Next());
+}
+
+TEST(Tokenizer, CommentWhiteSpace) {
+  SETUP_TEST(" \t  \r  #test \t  \r  ");
+  ASSERT_FALSE(tokenizer.Next());
+}
+
+TEST(Tokenizer, CommentNewLine) {
+  SETUP_TEST(" #test   \n");
+  ASSERT_NEWLINE_TOKEN();
+  ASSERT_FALSE(tokenizer.Next());
+}
+
+TEST(Tokenizer, CommentTwoNewLine) {
+  SETUP_TEST(" #test   \n#test");
+  ASSERT_NEWLINE_TOKEN();
+  ASSERT_FALSE(tokenizer.Next());
+}
+
+TEST(Tokenizer, CommentWithText) {
+  SETUP_TEST("foo bar #test");
+  ASSERT_TEXT_TOKEN("foo");
+  ASSERT_TEXT_TOKEN("bar");
+  ASSERT_FALSE(tokenizer.Next());
+}
+
+TEST(Tokenizer, CommentWithTextNoSpace) {
+  SETUP_TEST("foo bar#test");
+  ASSERT_TEXT_TOKEN("foo");
+  ASSERT_TEXT_TOKEN("bar");
+  ASSERT_FALSE(tokenizer.Next());
+}
+
+TEST(Tokenizer, CommentWithTextLineFeed) {
+  SETUP_TEST("foo bar #test\n");
+  ASSERT_TEXT_TOKEN("foo");
+  ASSERT_TEXT_TOKEN("bar");
+  ASSERT_NEWLINE_TOKEN();
+  ASSERT_FALSE(tokenizer.Next());
+}
+
+TEST(Tokenizer, CommentWithMultiTextLineFeed) {
+  SETUP_TEST("#blah\nfoo bar #test\n#blah");
+  ASSERT_NEWLINE_TOKEN();
+  ASSERT_TEXT_TOKEN("foo");
+  ASSERT_TEXT_TOKEN("bar");
+  ASSERT_NEWLINE_TOKEN();
+  ASSERT_FALSE(tokenizer.Next());
+}
+
+TEST(Tokenizer, SimpleEscaped) {
+  SETUP_TEST("fo\\no bar");
+  ASSERT_TEXT_TOKEN("fo\\no");
+  ASSERT_TEXT_TOKEN("bar");
+  ASSERT_FALSE(tokenizer.Next());
+}
+
+TEST(Tokenizer, EscapedLineContNoLineFeed) {
+  SETUP_TEST("fo\\no bar \\ hello");
+  ASSERT_TEXT_TOKEN("fo\\no");
+  ASSERT_TEXT_TOKEN("bar");
+  ASSERT_FALSE(tokenizer.Next());
+}
+
+TEST(Tokenizer, EscapedLineContLineFeed) {
+  SETUP_TEST("fo\\no bar \\ hello\n");
+  ASSERT_TEXT_TOKEN("fo\\no");
+  ASSERT_TEXT_TOKEN("bar");
+  ASSERT_FALSE(tokenizer.Next());
+}
+
+TEST(Tokenizer, EscapedLineCont) {
+  SETUP_TEST("fo\\no bar \\\ntest");
+  ASSERT_TEXT_TOKEN("fo\\no");
+  ASSERT_TEXT_TOKEN("bar");
+  ASSERT_TEXT_TOKEN("test");
+  ASSERT_FALSE(tokenizer.Next());
+}
+
+TEST(Tokenizer, EscapedLineContWithBadChars) {
+  SETUP_TEST("fo\\no bar \\bad bad bad\ntest");
+  ASSERT_TEXT_TOKEN("fo\\no");
+  ASSERT_TEXT_TOKEN("bar");
+  ASSERT_TEXT_TOKEN("test");
+  ASSERT_FALSE(tokenizer.Next());
+}
+
+TEST(Tokenizer, SimpleQuotes) {
+  SETUP_TEST("foo \"single token\" bar");
+  ASSERT_TEXT_TOKEN("foo");
+  ASSERT_TEXT_TOKEN("single token");
+  ASSERT_TEXT_TOKEN("bar");
+  ASSERT_FALSE(tokenizer.Next());
+}
+
+TEST(Tokenizer, BadQuotes) {
+  SETUP_TEST("foo \"single token");
+  ASSERT_TEXT_TOKEN("foo");
+  ASSERT_TEXT_TOKEN("single token");
+  ASSERT_FALSE(tokenizer.Next());
+}
+
+}  // namespace init
diff --git a/init/perfboot.py b/init/perfboot.py
new file mode 100755
index 0000000..b0efb11
--- /dev/null
+++ b/init/perfboot.py
@@ -0,0 +1,454 @@
+#!/usr/bin/env python
+# 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.
+"""Record the event logs during boot and output them to a file.
+
+This script repeats the record of each event log during Android boot specified
+times. By default, interval between measurements is adjusted in such a way that
+CPUs are cooled down sufficiently to avoid boot time slowdown caused by CPU
+thermal throttling. The result is output in a tab-separated value format.
+
+Examples:
+
+Repeat measurements 10 times. Interval between iterations is adjusted based on
+CPU temperature of the device.
+
+$ ./perfboot.py --iterations=10
+
+Repeat measurements 20 times. 60 seconds interval is taken between each
+iteration.
+
+$ ./perfboot.py --iterations=20 --interval=60
+
+Repeat measurements 20 times, show verbose output, output the result to
+data.tsv, and read event tags from eventtags.txt.
+
+$ ./perfboot.py --iterations=30 -v --output=data.tsv --tags=eventtags.txt
+"""
+
+import argparse
+import atexit
+import cStringIO
+import glob
+import inspect
+import logging
+import math
+import os
+import re
+import subprocess
+import sys
+import threading
+import time
+
+sys.path.append(os.path.dirname(os.path.dirname(__file__)))
+import adb
+
+# The default event tags to record.
+_DEFAULT_EVENT_TAGS = [
+    'boot_progress_start',
+    'boot_progress_preload_start',
+    'boot_progress_preload_end',
+    'boot_progress_system_run',
+    'boot_progress_pms_start',
+    'boot_progress_pms_system_scan_start',
+    'boot_progress_pms_data_scan_start',
+    'boot_progress_pms_scan_end',
+    'boot_progress_pms_ready',
+    'boot_progress_ams_ready',
+    'boot_progress_enable_screen',
+    'sf_stop_bootanim',
+    'wm_boot_animation_done',
+]
+
+
+class IntervalAdjuster(object):
+    """A helper class to take suffficient interval between iterations."""
+
+    # CPU temperature values per product used to decide interval
+    _CPU_COOL_DOWN_THRESHOLDS = {
+        'flo': 40,
+        'flounder': 40000,
+        'razor': 40,
+        'volantis': 40000,
+    }
+    # The interval between CPU temperature checks
+    _CPU_COOL_DOWN_WAIT_INTERVAL = 10
+    # The wait time used when the value of _CPU_COOL_DOWN_THRESHOLDS for
+    # the product is not defined.
+    _CPU_COOL_DOWN_WAIT_TIME_DEFAULT = 120
+
+    def __init__(self, interval, device):
+        self._interval = interval
+        self._device = device
+        self._temp_paths = device.shell(
+            ['ls', '/sys/class/thermal/thermal_zone*/temp']).splitlines()
+        self._product = device.get_prop('ro.build.product')
+        self._waited = False
+
+    def wait(self):
+        """Waits certain amount of time for CPUs cool-down."""
+        if self._interval is None:
+            self._wait_cpu_cool_down(self._product, self._temp_paths)
+        else:
+            if self._waited:
+                print 'Waiting for %d seconds' % self._interval
+                time.sleep(self._interval)
+        self._waited = True
+
+    def _get_cpu_temp(self, threshold):
+        max_temp = 0
+        for temp_path in self._temp_paths:
+            temp = int(self._device.shell(['cat', temp_path]).rstrip())
+            max_temp = max(max_temp, temp)
+            if temp >= threshold:
+                return temp
+        return max_temp
+
+    def _wait_cpu_cool_down(self, product, temp_paths):
+        threshold = IntervalAdjuster._CPU_COOL_DOWN_THRESHOLDS.get(
+            self._product)
+        if threshold is None:
+            print 'No CPU temperature threshold is set for ' + self._product
+            print ('Just wait %d seconds' %
+                   IntervalAdjuster._CPU_COOL_DOWN_WAIT_TIME_DEFAULT)
+            time.sleep(IntervalAdjuster._CPU_COOL_DOWN_WAIT_TIME_DEFAULT)
+            return
+        while True:
+            temp = self._get_cpu_temp(threshold)
+            if temp < threshold:
+                logging.info('Current CPU temperature %s' % temp)
+                return
+            print 'Waiting until CPU temperature (%d) falls below %d' % (
+                temp, threshold)
+            time.sleep(IntervalAdjuster._CPU_COOL_DOWN_WAIT_INTERVAL)
+
+
+class WatchdogTimer(object):
+    """A timer that makes is_timedout() return true in |timeout| seconds."""
+    def __init__(self, timeout):
+        self._timedout = False
+
+        def notify_timeout():
+            self._timedout = True
+        self._timer = threading.Timer(timeout, notify_timeout)
+        self._timer.daemon = True
+        self._timer.start()
+
+    def is_timedout(self):
+        return self._timedout
+
+    def cancel(self):
+        self._timer.cancel()
+
+
+def readlines_unbuffered(proc):
+    """Read lines from |proc|'s standard out without buffering."""
+    while True:
+        buf = []
+        c = proc.stdout.read(1)
+        if c == '' and proc.poll() is not None:
+            break
+        while c != '\n':
+            if c == '' and proc.poll() is not None:
+                break
+            buf.append(c)
+            c = proc.stdout.read(1)
+        yield ''.join(buf)
+
+
+def disable_dropbox(device):
+    """Removes the files created by Dropbox and avoids creating the files."""
+    device.root()
+    device.wait()
+    device.shell(['rm', '-rf', '/system/data/dropbox'])
+    original_dropbox_max_files = device.shell(
+        ['settings', 'get', 'global', 'dropbox_max_files']).rstrip()
+    device.shell(['settings', 'put', 'global', 'dropbox_max_files', '0'])
+    return original_dropbox_max_files
+
+
+def restore_dropbox(device, original_dropbox_max_files):
+    """Restores the dropbox_max_files setting."""
+    device.root()
+    device.wait()
+    if original_dropbox_max_files == 'null':
+        device.shell(['settings', 'delete', 'global', 'dropbox_max_files'])
+    else:
+        device.shell(['settings', 'put', 'global', 'dropbox_max_files',
+                      original_dropbox_max_files])
+
+
+def init_perf(device, output, record_list, tags):
+    device.wait()
+    build_type = device.get_prop('ro.build.type')
+    original_dropbox_max_files = None
+    if build_type != 'user':
+        # Workaround for Dropbox issue (http://b/20890386).
+        original_dropbox_max_files = disable_dropbox(device)
+
+    def cleanup():
+        try:
+            if record_list:
+                print_summary(record_list, tags[-1])
+                output_results(output, record_list, tags)
+            if original_dropbox_max_files is not None:
+                restore_dropbox(device, original_dropbox_max_files)
+        except (subprocess.CalledProcessError, RuntimeError):
+            pass
+    atexit.register(cleanup)
+
+
+def check_dm_verity_settings(device):
+    device.wait()
+    for partition in ['system', 'vendor']:
+        verity_mode = device.get_prop('partition.%s.verified' % partition)
+        if verity_mode is None:
+            logging.warning('dm-verity is not enabled for /%s. Did you run '
+                            'adb disable-verity? That may skew the result.',
+                            partition)
+
+
+def read_event_tags(tags_file):
+    """Reads event tags from |tags_file|."""
+    if not tags_file:
+        return _DEFAULT_EVENT_TAGS
+    tags = []
+    with open(tags_file) as f:
+        for line in f:
+            if '#' in line:
+                line = line[:line.find('#')]
+            line = line.strip()
+            if line:
+                tags.append(line)
+    return tags
+
+
+def make_event_tags_re(tags):
+    """Makes a regular expression object that matches event logs of |tags|."""
+    return re.compile(r'(?P<pid>[0-9]+) +[0-9]+ I (?P<tag>%s): (?P<time>\d+)' %
+                      '|'.join(tags))
+
+
+def filter_event_tags(tags, device):
+    """Drop unknown tags not listed in device's event-log-tags file."""
+    device.wait()
+    supported_tags = set()
+    for l in device.shell(['cat', '/system/etc/event-log-tags']).splitlines():
+        tokens = l.split(' ')
+        if len(tokens) >= 2:
+            supported_tags.add(tokens[1])
+    filtered = []
+    for tag in tags:
+        if tag in supported_tags:
+            filtered.append(tag)
+        else:
+            logging.warning('Unknown tag \'%s\'. Ignoring...', tag)
+    return filtered
+
+
+def get_values(record, tag):
+    """Gets values that matches |tag| from |record|."""
+    keys = [key for key in record.keys() if key[0] == tag]
+    return [record[k] for k in sorted(keys)]
+
+
+def get_last_value(record, tag):
+    """Gets the last value that matches |tag| from |record|."""
+    values = get_values(record, tag)
+    if not values:
+        return 0
+    return values[-1]
+
+
+def output_results(filename, record_list, tags):
+    """Outputs |record_list| into |filename| in a TSV format."""
+    # First, count the number of the values of each tag.
+    # This is for dealing with events that occur multiple times.
+    # For instance, boot_progress_preload_start and boot_progress_preload_end
+    # are recorded twice on 64-bit system. One is for 64-bit zygote process
+    # and the other is for 32-bit zygote process.
+    values_counter = {}
+    for record in record_list:
+        for tag in tags:
+            # Some record might lack values for some tags due to unanticipated
+            # problems (e.g. timeout), so take the maximum count among all the
+            # record.
+            values_counter[tag] = max(values_counter.get(tag, 1),
+                                      len(get_values(record, tag)))
+
+    # Then creates labels for the data. If there are multiple values for one
+    # tag, labels for these values are numbered except the first one as
+    # follows:
+    #
+    # event_tag event_tag2 event_tag3
+    #
+    # The corresponding values are sorted in an ascending order of PID.
+    labels = []
+    for tag in tags:
+        for i in range(1, values_counter[tag] + 1):
+            labels.append('%s%s' % (tag, '' if i == 1 else str(i)))
+
+    # Finally write the data into the file.
+    with open(filename, 'w') as f:
+        f.write('\t'.join(labels) + '\n')
+        for record in record_list:
+            line = cStringIO.StringIO()
+            invalid_line = False
+            for i, tag in enumerate(tags):
+                if i != 0:
+                    line.write('\t')
+                values = get_values(record, tag)
+                if len(values) < values_counter[tag]:
+                    invalid_line = True
+                    # Fill invalid record with 0
+                    values += [0] * (values_counter[tag] - len(values))
+                line.write('\t'.join(str(t) for t in values))
+            if invalid_line:
+                logging.error('Invalid record found: ' + line.getvalue())
+            line.write('\n')
+            f.write(line.getvalue())
+    print 'Wrote: ' + filename
+
+
+def median(data):
+    """Calculates the median value from |data|."""
+    data = sorted(data)
+    n = len(data)
+    if n % 2 == 1:
+        return data[n / 2]
+    else:
+        n2 = n / 2
+        return (data[n2 - 1] + data[n2]) / 2.0
+
+
+def mean(data):
+    """Calculates the mean value from |data|."""
+    return float(sum(data)) / len(data)
+
+
+def stddev(data):
+    """Calculates the standard deviation value from |value|."""
+    m = mean(data)
+    return math.sqrt(sum((x - m) ** 2 for x in data) / len(data))
+
+
+def print_summary(record_list, end_tag):
+    """Prints the summary of |record_list|."""
+    # Filter out invalid data.
+    end_times = [get_last_value(record, end_tag) for record in record_list
+                 if get_last_value(record, end_tag) != 0]
+    print 'mean: ', mean(end_times)
+    print 'median:', median(end_times)
+    print 'standard deviation:', stddev(end_times)
+
+
+def do_iteration(device, interval_adjuster, event_tags_re, end_tag):
+    """Measures the boot time once."""
+    device.wait()
+    interval_adjuster.wait()
+    device.reboot()
+    print 'Rebooted the device'
+    record = {}
+    booted = False
+    while not booted:
+        device.wait()
+        # Stop the iteration if it does not finish within 120 seconds.
+        timeout = 120
+        t = WatchdogTimer(timeout)
+        p = subprocess.Popen(
+                ['adb', 'logcat', '-b', 'events', '-v', 'threadtime'],
+                stdout=subprocess.PIPE)
+        for line in readlines_unbuffered(p):
+            if t.is_timedout():
+                print '*** Timed out ***'
+                return record
+            m = event_tags_re.search(line)
+            if not m:
+                continue
+            tag = m.group('tag')
+            event_time = int(m.group('time'))
+            pid = m.group('pid')
+            record[(tag, pid)] = event_time
+            print 'Event log recorded: %s (%s) - %d ms' % (
+                tag, pid, event_time)
+            if tag == end_tag:
+                booted = True
+                t.cancel()
+                break
+    return record
+
+
+def parse_args():
+    """Parses the command line arguments."""
+    parser = argparse.ArgumentParser(
+        description=inspect.getdoc(sys.modules[__name__]),
+        formatter_class=argparse.RawDescriptionHelpFormatter)
+    parser.add_argument('--iterations', type=int, default=5,
+                        help='Number of times to repeat boot measurements.')
+    parser.add_argument('--interval', type=int,
+                        help=('Duration between iterations. If this is not '
+                              'set explicitly, durations are determined '
+                              'adaptively based on CPUs temperature.'))
+    parser.add_argument('-o', '--output', help='File name of output data.')
+    parser.add_argument('-v', '--verbose', action='store_true',
+                        help='Show verbose output.')
+    parser.add_argument('-s', '--serial', default=os.getenv('ANDROID_SERIAL'),
+                        help='Adb device serial number.')
+    parser.add_argument('-t', '--tags', help='Specify the filename from which '
+                        'event tags are read. Every line contains one event '
+                        'tag and the last event tag is used to detect that '
+                        'the device has finished booting.')
+    parser.add_argument('--apk-dir', help='Specify the directory which contains '
+                        'APK files to be installed before measuring boot time.')
+    return parser.parse_args()
+
+
+def install_apks(device, apk_dir):
+    for apk in glob.glob(os.path.join(apk_dir, '*.apk')):
+        print 'Installing: ' + apk
+        device.install(apk, replace=True)
+
+
+def main():
+    args = parse_args()
+    if args.verbose:
+        logging.getLogger().setLevel(logging.INFO)
+
+    device = adb.get_device(args.serial)
+
+    if not args.output:
+        device.wait()
+        args.output = 'perf-%s-%s.tsv' % (
+            device.get_prop('ro.build.flavor'),
+            device.get_prop('ro.build.version.incremental'))
+    check_dm_verity_settings(device)
+
+    if args.apk_dir:
+        install_apks(device, args.apk_dir)
+
+    record_list = []
+    event_tags = filter_event_tags(read_event_tags(args.tags), device)
+    init_perf(device, args.output, record_list, event_tags)
+    interval_adjuster = IntervalAdjuster(args.interval, device)
+    event_tags_re = make_event_tags_re(event_tags)
+    end_tag = event_tags[-1]
+    for i in range(args.iterations):
+        print 'Run #%d ' % i
+        record = do_iteration(
+            device, interval_adjuster, event_tags_re, end_tag)
+        record_list.append(record)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/init/property_service.cpp b/init/property_service.cpp
index 5b7a1cb..aa939a5 100644
--- a/init/property_service.cpp
+++ b/init/property_service.cpp
@@ -141,9 +141,10 @@
     return check_mac_perms(name, sctx);
 }
 
-int __property_get(const char *name, char *value)
-{
-    return __system_property_get(name, value);
+std::string property_get(const char* name) {
+    char value[PROP_VALUE_MAX] = {0};
+    __system_property_get(name, value);
+    return value;
 }
 
 static void write_persistent_property(const char *name, const char *value)
@@ -491,9 +492,8 @@
 
 static void load_override_properties() {
     if (ALLOW_LOCAL_PROP_OVERRIDE) {
-        char debuggable[PROP_VALUE_MAX];
-        int ret = property_get("ro.debuggable", debuggable);
-        if (ret && (strcmp(debuggable, "1") == 0)) {
+        std::string debuggable = property_get("ro.debuggable");
+        if (debuggable == "1") {
             load_properties_from_file(PROP_PATH_LOCAL_OVERRIDE, NULL);
         }
     }
@@ -511,19 +511,17 @@
 }
 
 void load_recovery_id_prop() {
-    char fstab_filename[PROP_VALUE_MAX + sizeof(FSTAB_PREFIX)];
-    char propbuf[PROP_VALUE_MAX];
-    int ret = property_get("ro.hardware", propbuf);
-    if (!ret) {
+    std::string ro_hardware = property_get("ro.hardware");
+    if (ro_hardware.empty()) {
         ERROR("ro.hardware not set - unable to load recovery id\n");
         return;
     }
-    snprintf(fstab_filename, sizeof(fstab_filename), FSTAB_PREFIX "%s", propbuf);
+    std::string fstab_filename = FSTAB_PREFIX + ro_hardware;
 
-    std::unique_ptr<fstab, void(*)(fstab*)> tab(fs_mgr_read_fstab(fstab_filename),
+    std::unique_ptr<fstab, void(*)(fstab*)> tab(fs_mgr_read_fstab(fstab_filename.c_str()),
             fs_mgr_free_fstab);
     if (!tab) {
-        ERROR("unable to read fstab %s: %s\n", fstab_filename, strerror(errno));
+        ERROR("unable to read fstab %s: %s\n", fstab_filename.c_str(), strerror(errno));
         return;
     }
 
diff --git a/init/property_service.h b/init/property_service.h
index a27053d..51d7404 100644
--- a/init/property_service.h
+++ b/init/property_service.h
@@ -19,6 +19,7 @@
 
 #include <stddef.h>
 #include <sys/system_properties.h>
+#include <string>
 
 extern void property_init(void);
 extern void property_load_boot_defaults(void);
@@ -26,30 +27,9 @@
 extern void load_all_props(void);
 extern void start_property_service(void);
 void get_property_workspace(int *fd, int *sz);
-extern int __property_get(const char *name, char *value);
+std::string property_get(const char* name);
 extern int property_set(const char *name, const char *value);
 extern bool properties_initialized();
 
-#ifndef __clang__
-extern void __property_get_size_error()
-    __attribute__((__error__("property_get called with too small buffer")));
-#else
-extern void __property_get_size_error();
-#endif
-
-static inline
-__attribute__ ((always_inline))
-__attribute__ ((gnu_inline))
-#ifndef __clang__
-__attribute__ ((artificial))
-#endif
-int property_get(const char *name, char *value)
-{
-    size_t value_len = __builtin_object_size(value, 0);
-    if (value_len != PROP_VALUE_MAX)
-        __property_get_size_error();
-
-    return __property_get(name, value);
-}
 
 #endif	/* _INIT_PROPERTY_H */
diff --git a/init/readme.txt b/init/readme.txt
index 4dda340..d70c6f3 100644
--- a/init/readme.txt
+++ b/init/readme.txt
@@ -197,8 +197,11 @@
 ifup <interface>
    Bring the network interface <interface> online.
 
-import <filename>
+import <path>
    Parse an init config file, extending the current configuration.
+   If <path> is a directory, each file in the directory is parsed as
+   a config file. It is not recursive, nested directories will
+   not be parsed.
 
 insmod <path>
    Install the module at <path>
@@ -374,6 +377,29 @@
 bootanimation ends at: 33790 31230 (-2560)
 
 
+Systrace
+--------
+Systrace [1] can be used for obtaining performance analysis reports during boot
+time on userdebug or eng builds.
+Here is an example of trace events of "wm" and "am" categories:
+
+  $ANDROID_BUILD_TOP/external/chromium-trace/systrace.py wm am --boot
+
+This command will cause the device to reboot. After the device is rebooted and
+the boot sequence has finished, the trace report is obtained from the device
+and written as trace.html on the host by hitting Ctrl+C.
+
+LIMITATION
+Recording trace events is started after persistent properties are loaded, so
+the trace events that are emitted before that are not recorded. Several
+services such as vold, surfaceflinger, and servicemanager are affected by this
+limitation since they are started before persistent properties are loaded.
+Zygote initialization and the processes that are forked from the zygote are not
+affected.
+
+[1] http://developer.android.com/tools/help/systrace.html
+
+
 Debugging init
 --------------
 By default, programs executed by init will drop stdout and stderr into
diff --git a/init/service.cpp b/init/service.cpp
new file mode 100644
index 0000000..a370d25
--- /dev/null
+++ b/init/service.cpp
@@ -0,0 +1,805 @@
+/*
+ * 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 "service.h"
+
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <termios.h>
+#include <unistd.h>
+
+#include <selinux/selinux.h>
+
+#include <base/file.h>
+#include <base/stringprintf.h>
+#include <cutils/android_reboot.h>
+#include <cutils/sockets.h>
+
+#include "action.h"
+#include "init.h"
+#include "init_parser.h"
+#include "keywords.h"
+#include "log.h"
+#include "property_service.h"
+#include "util.h"
+
+#define CRITICAL_CRASH_THRESHOLD    4       // if we crash >4 times ...
+#define CRITICAL_CRASH_WINDOW       (4*60)  // ... in 4 minutes, goto recovery
+
+SocketInfo::SocketInfo() : uid(0), gid(0), perm(0) {
+}
+
+SocketInfo::SocketInfo(const std::string& name, const std::string& type, uid_t uid,
+                       gid_t gid, int perm, const std::string& socketcon)
+    : name(name), type(type), uid(uid), gid(gid), perm(perm), socketcon(socketcon) {
+}
+
+ServiceEnvironmentInfo::ServiceEnvironmentInfo() {
+}
+
+ServiceEnvironmentInfo::ServiceEnvironmentInfo(const std::string& name,
+                                               const std::string& value)
+    : name(name), value(value) {
+}
+
+Service::Service(const std::string& name, const std::string& classname,
+                 const std::vector<std::string>& args)
+    : name_(name), classname_(classname), flags_(0), pid_(0), time_started_(0),
+      time_crashed_(0), nr_crashed_(0), uid_(0), gid_(0), seclabel_(""),
+      ioprio_class_(IoSchedClass_NONE), ioprio_pri_(0), args_(args) {
+    onrestart_.InitSingleTrigger("onrestart");
+}
+
+Service::Service(const std::string& name, const std::string& classname,
+                 unsigned flags, uid_t uid, gid_t gid, const std::vector<gid_t>& supp_gids,
+                 const std::string& seclabel,  const std::vector<std::string>& args)
+    : name_(name), classname_(classname), flags_(flags), pid_(0), time_started_(0),
+      time_crashed_(0), nr_crashed_(0), uid_(uid), gid_(gid), supp_gids_(supp_gids),
+      seclabel_(seclabel), ioprio_class_(IoSchedClass_NONE), ioprio_pri_(0), args_(args) {
+    onrestart_.InitSingleTrigger("onrestart");
+}
+
+void Service::NotifyStateChange(const std::string& new_state) const {
+    if (!properties_initialized()) {
+        // If properties aren't available yet, we can't set them.
+        return;
+    }
+
+    if ((flags_ & SVC_EXEC) != 0) {
+        // 'exec' commands don't have properties tracking their state.
+        return;
+    }
+
+    std::string prop_name = android::base::StringPrintf("init.svc.%s", name_.c_str());
+    if (prop_name.length() >= PROP_NAME_MAX) {
+        // If the property name would be too long, we can't set it.
+        ERROR("Property name \"init.svc.%s\" too long; not setting to %s\n",
+              name_.c_str(), new_state.c_str());
+        return;
+    }
+
+    property_set(prop_name.c_str(), new_state.c_str());
+}
+
+bool Service::Reap() {
+    if (!(flags_ & SVC_ONESHOT) || (flags_ & SVC_RESTART)) {
+        NOTICE("Service '%s' (pid %d) killing any children in process group\n",
+               name_.c_str(), pid_);
+        kill(-pid_, SIGKILL);
+    }
+
+    // Remove any sockets we may have created.
+    for (const auto& si : sockets_) {
+        std::string tmp = android::base::StringPrintf(ANDROID_SOCKET_DIR "/%s",
+                                                      si.name.c_str());
+        unlink(tmp.c_str());
+    }
+
+    if (flags_ & SVC_EXEC) {
+        INFO("SVC_EXEC pid %d finished...\n", pid_);
+        return true;
+    }
+
+    pid_ = 0;
+    flags_ &= (~SVC_RUNNING);
+
+    // Oneshot processes go into the disabled state on exit,
+    // except when manually restarted.
+    if ((flags_ & SVC_ONESHOT) && !(flags_ & SVC_RESTART)) {
+        flags_ |= SVC_DISABLED;
+    }
+
+    // Disabled and reset processes do not get restarted automatically.
+    if (flags_ & (SVC_DISABLED | SVC_RESET))  {
+        NotifyStateChange("stopped");
+        return false;
+    }
+
+    time_t now = gettime();
+    if ((flags_ & SVC_CRITICAL) && !(flags_ & SVC_RESTART)) {
+        if (time_crashed_ + CRITICAL_CRASH_WINDOW >= now) {
+            if (++nr_crashed_ > CRITICAL_CRASH_THRESHOLD) {
+                ERROR("critical process '%s' exited %d times in %d minutes; "
+                      "rebooting into recovery mode\n", name_.c_str(),
+                      CRITICAL_CRASH_THRESHOLD, CRITICAL_CRASH_WINDOW / 60);
+                android_reboot(ANDROID_RB_RESTART2, 0, "recovery");
+                return false;
+            }
+        } else {
+            time_crashed_ = now;
+            nr_crashed_ = 1;
+        }
+    }
+
+    flags_ &= (~SVC_RESTART);
+    flags_ |= SVC_RESTARTING;
+
+    // Execute all onrestart commands for this service.
+    onrestart_.ExecuteAllCommands();
+
+    NotifyStateChange("restarting");
+    return false;
+}
+
+void Service::DumpState() const {
+    INFO("service %s\n", name_.c_str());
+    INFO("  class '%s'\n", classname_.c_str());
+    INFO("  exec");
+    for (const auto& s : args_) {
+        INFO(" '%s'", s.c_str());
+    }
+    INFO("\n");
+    for (const auto& si : sockets_) {
+        INFO("  socket %s %s 0%o\n", si.name.c_str(), si.type.c_str(), si.perm);
+    }
+}
+
+bool Service::HandleLine(int kw, const std::vector<std::string>& args, std::string* err) {
+    std::vector<std::string> str_args;
+
+    ioprio_class_ = IoSchedClass_NONE;
+
+    switch (kw) {
+    case K_class:
+        if (args.size() != 2) {
+            *err = "class option requires a classname\n";
+            return false;
+        } else {
+            classname_ = args[1];
+        }
+        break;
+    case K_console:
+        flags_ |= SVC_CONSOLE;
+        break;
+    case K_disabled:
+        flags_ |= SVC_DISABLED;
+        flags_ |= SVC_RC_DISABLED;
+        break;
+    case K_ioprio:
+        if (args.size() != 3) {
+            *err = "ioprio optin usage: ioprio <rt|be|idle> <ioprio 0-7>\n";
+            return false;
+        } else {
+            ioprio_pri_ = std::stoul(args[2], 0, 8);
+
+            if (ioprio_pri_ < 0 || ioprio_pri_ > 7) {
+                *err = "priority value must be range 0 - 7\n";
+                return false;
+            }
+
+            if (args[1] == "rt") {
+                ioprio_class_ = IoSchedClass_RT;
+            } else if (args[1] == "be") {
+                ioprio_class_ = IoSchedClass_BE;
+            } else if (args[1] == "idle") {
+                ioprio_class_ = IoSchedClass_IDLE;
+            } else {
+                *err = "ioprio option usage: ioprio <rt|be|idle> <0-7>\n";
+                return false;
+            }
+        }
+        break;
+    case K_group:
+        if (args.size() < 2) {
+            *err = "group option requires a group id\n";
+            return false;
+        } else if (args.size() > NR_SVC_SUPP_GIDS + 2) {
+            *err = android::base::StringPrintf("group option accepts at most %d supp. groups\n",
+                                               NR_SVC_SUPP_GIDS);
+            return false;
+        } else {
+            gid_ = decode_uid(args[1].c_str());
+            for (std::size_t n = 2; n < args.size(); n++) {
+                supp_gids_.push_back(decode_uid(args[n].c_str()));
+            }
+        }
+        break;
+    case K_keycodes:
+        if (args.size() < 2) {
+            *err = "keycodes option requires atleast one keycode\n";
+            return false;
+        } else {
+            for (std::size_t i = 1; i < args.size(); i++) {
+                keycodes_.push_back(std::stoi(args[i]));
+            }
+        }
+        break;
+    case K_oneshot:
+        flags_ |= SVC_ONESHOT;
+        break;
+    case K_onrestart:
+        if (args.size() < 2) {
+            return false;
+        }
+        str_args.assign(args.begin() + 1, args.end());
+        add_command_to_action(&onrestart_, str_args, "", 0, err);
+        break;
+    case K_critical:
+        flags_ |= SVC_CRITICAL;
+        break;
+    case K_setenv: { /* name value */
+        if (args.size() < 3) {
+            *err = "setenv option requires name and value arguments\n";
+            return false;
+        }
+
+        envvars_.push_back({args[1], args[2]});
+        break;
+    }
+    case K_socket: {/* name type perm [ uid gid context ] */
+        if (args.size() < 4) {
+            *err = "socket option requires name, type, perm arguments\n";
+            return false;
+        }
+        if (args[2] != "dgram" && args[2] != "stream" &&
+            args[2] != "seqpacket") {
+            *err = "socket type must be 'dgram', 'stream' or 'seqpacket'\n";
+            return false;
+        }
+
+        int perm = std::stoul(args[3], 0, 8);
+        uid_t uid = args.size() > 4 ? decode_uid(args[4].c_str()) : 0;
+        gid_t gid = args.size() > 5 ? decode_uid(args[5].c_str()) : 0;
+        std::string socketcon = args.size() > 6 ? args[6] : "";
+
+        sockets_.push_back({args[1], args[2], uid, gid, perm, socketcon});
+        break;
+    }
+    case K_user:
+        if (args.size() != 2) {
+            *err = "user option requires a user id\n";
+            return false;
+        } else {
+            uid_ = decode_uid(args[1].c_str());
+        }
+        break;
+    case K_seclabel:
+        if (args.size() != 2) {
+            *err = "seclabel option requires a label string\n";
+            return false;
+        } else {
+            seclabel_ = args[1];
+        }
+        break;
+    case K_writepid:
+        if (args.size() < 2) {
+            *err = "writepid option requires at least one filename\n";
+            return false;
+        }
+        writepid_files_.assign(args.begin() + 1, args.end());
+        break;
+
+    default:
+        *err = android::base::StringPrintf("invalid option '%s'\n", args[0].c_str());
+        return false;
+    }
+    return true;
+}
+
+bool Service::Start(const std::vector<std::string>& dynamic_args) {
+    // Starting a service removes it from the disabled or reset state and
+    // immediately takes it out of the restarting state if it was in there.
+    flags_ &= (~(SVC_DISABLED|SVC_RESTARTING|SVC_RESET|SVC_RESTART|SVC_DISABLED_START));
+    time_started_ = 0;
+
+    // Running processes require no additional work --- if they're in the
+    // process of exiting, we've ensured that they will immediately restart
+    // on exit, unless they are ONESHOT.
+    if (flags_ & SVC_RUNNING) {
+        return false;
+    }
+
+    bool needs_console = (flags_ & SVC_CONSOLE);
+    if (needs_console && !have_console) {
+        ERROR("service '%s' requires console\n", name_.c_str());
+        flags_ |= SVC_DISABLED;
+        return false;
+    }
+
+    struct stat sb;
+    if (stat(args_[0].c_str(), &sb) == -1) {
+        ERROR("cannot find '%s' (%s), disabling '%s'\n",
+              args_[0].c_str(), strerror(errno), name_.c_str());
+        flags_ |= SVC_DISABLED;
+        return false;
+    }
+
+    if ((!(flags_ & SVC_ONESHOT)) && !dynamic_args.empty()) {
+        ERROR("service '%s' must be one-shot to use dynamic args, disabling\n",
+              args_[0].c_str());
+        flags_ |= SVC_DISABLED;
+        return false;
+    }
+
+    std::string scon;
+    if (!seclabel_.empty()) {
+        scon = seclabel_;
+    } else {
+        char* mycon = nullptr;
+        char* fcon = nullptr;
+
+        INFO("computing context for service '%s'\n", args_[0].c_str());
+        int rc = getcon(&mycon);
+        if (rc < 0) {
+            ERROR("could not get context while starting '%s'\n", name_.c_str());
+            return false;
+        }
+
+        rc = getfilecon(args_[0].c_str(), &fcon);
+        if (rc < 0) {
+            ERROR("could not get context while starting '%s'\n", name_.c_str());
+            free(mycon);
+            return false;
+        }
+
+        char* ret_scon = nullptr;
+        rc = security_compute_create(mycon, fcon, string_to_security_class("process"),
+                                     &ret_scon);
+        if (rc == 0) {
+            scon = ret_scon;
+            free(ret_scon);
+        }
+        if (rc == 0 && scon == mycon) {
+            ERROR("Service %s does not have a SELinux domain defined.\n", name_.c_str());
+            free(mycon);
+            free(fcon);
+            return false;
+        }
+        free(mycon);
+        free(fcon);
+        if (rc < 0) {
+            ERROR("could not get context while starting '%s'\n", name_.c_str());
+            return false;
+        }
+    }
+
+    NOTICE("Starting service '%s'...\n", name_.c_str());
+
+    pid_t pid = fork();
+    if (pid == 0) {
+        int fd, sz;
+
+        umask(077);
+        if (properties_initialized()) {
+            get_property_workspace(&fd, &sz);
+            std::string tmp = android::base::StringPrintf("%d,%d", dup(fd), sz);
+            add_environment("ANDROID_PROPERTY_WORKSPACE", tmp.c_str());
+        }
+
+        for (const auto& ei : envvars_) {
+            add_environment(ei.name.c_str(), ei.value.c_str());
+        }
+
+        for (const auto& si : sockets_) {
+            int socket_type = ((si.type == "stream" ? SOCK_STREAM :
+                                (si.type == "dgram" ? SOCK_DGRAM :
+                                 SOCK_SEQPACKET)));
+            const char* socketcon =
+                !si.socketcon.empty() ? si.socketcon.c_str() : scon.c_str();
+
+            int s = create_socket(si.name.c_str(), socket_type, si.perm,
+                                  si.uid, si.gid, socketcon);
+            if (s >= 0) {
+                PublishSocket(si.name, s);
+            }
+        }
+
+        std::string pid_str = android::base::StringPrintf("%d", pid);
+        for (const auto& file : writepid_files_) {
+            if (!android::base::WriteStringToFile(pid_str, file)) {
+                ERROR("couldn't write %s to %s: %s\n",
+                      pid_str.c_str(), file.c_str(), strerror(errno));
+            }
+        }
+
+        if (ioprio_class_ != IoSchedClass_NONE) {
+            if (android_set_ioprio(getpid(), ioprio_class_, ioprio_pri_)) {
+                ERROR("Failed to set pid %d ioprio = %d,%d: %s\n",
+                      getpid(), ioprio_class_, ioprio_pri_, strerror(errno));
+            }
+        }
+
+        if (needs_console) {
+            setsid();
+            OpenConsole();
+        } else {
+            ZapStdio();
+        }
+
+        setpgid(0, getpid());
+
+        // As requested, set our gid, supplemental gids, and uid.
+        if (gid_) {
+            if (setgid(gid_) != 0) {
+                ERROR("setgid failed: %s\n", strerror(errno));
+                _exit(127);
+            }
+        }
+        if (!supp_gids_.empty()) {
+            if (setgroups(supp_gids_.size(), &supp_gids_[0]) != 0) {
+                ERROR("setgroups failed: %s\n", strerror(errno));
+                _exit(127);
+            }
+        }
+        if (uid_) {
+            if (setuid(uid_) != 0) {
+                ERROR("setuid failed: %s\n", strerror(errno));
+                _exit(127);
+            }
+        }
+        if (!seclabel_.empty()) {
+            if (setexeccon(seclabel_.c_str()) < 0) {
+                ERROR("cannot setexeccon('%s'): %s\n",
+                      seclabel_.c_str(), strerror(errno));
+                _exit(127);
+            }
+        }
+
+        std::vector<char*> strs;
+        for (const auto& s : args_) {
+            strs.push_back(const_cast<char*>(s.c_str()));
+        }
+        for (const auto& s : dynamic_args) {
+            strs.push_back(const_cast<char*>(s.c_str()));
+        }
+        strs.push_back(nullptr);
+        if (execve(args_[0].c_str(), (char**) &strs[0], (char**) ENV) < 0) {
+            ERROR("cannot execve('%s'): %s\n", args_[0].c_str(), strerror(errno));
+        }
+
+        _exit(127);
+    }
+
+    if (pid < 0) {
+        ERROR("failed to start '%s'\n", name_.c_str());
+        pid_ = 0;
+        return false;
+    }
+
+    time_started_ = gettime();
+    pid_ = pid;
+    flags_ |= SVC_RUNNING;
+
+    if ((flags_ & SVC_EXEC) != 0) {
+        INFO("SVC_EXEC pid %d (uid %d gid %d+%zu context %s) started; waiting...\n",
+             pid_, uid_, gid_, supp_gids_.size(),
+             !seclabel_.empty() ? seclabel_.c_str() : "default");
+    }
+
+    NotifyStateChange("running");
+    return true;
+}
+
+bool Service::Start() {
+    const std::vector<std::string> null_dynamic_args;
+    return Start(null_dynamic_args);
+}
+
+bool Service::StartIfNotDisabled() {
+    if (!(flags_ & SVC_DISABLED)) {
+        return Start();
+    } else {
+        flags_ |= SVC_DISABLED_START;
+    }
+    return true;
+}
+
+bool Service::Enable() {
+    flags_ &= ~(SVC_DISABLED | SVC_RC_DISABLED);
+    if (flags_ & SVC_DISABLED_START) {
+        return Start();
+    }
+    return true;
+}
+
+void Service::Reset() {
+    StopOrReset(SVC_RESET);
+}
+
+void Service::Stop() {
+    StopOrReset(SVC_DISABLED);
+}
+
+void Service::Restart() {
+    if (flags_ & SVC_RUNNING) {
+        /* Stop, wait, then start the service. */
+        StopOrReset(SVC_RESTART);
+    } else if (!(flags_ & SVC_RESTARTING)) {
+        /* Just start the service since it's not running. */
+        Start();
+    } /* else: Service is restarting anyways. */
+}
+
+void Service::RestartIfNeeded(time_t& process_needs_restart) {
+    time_t next_start_time = time_started_ + 5;
+
+    if (next_start_time <= gettime()) {
+        flags_ &= (~SVC_RESTARTING);
+        Start();
+        return;
+    }
+
+    if ((next_start_time < process_needs_restart) ||
+        (process_needs_restart == 0)) {
+        process_needs_restart = next_start_time;
+    }
+}
+
+/* The how field should be either SVC_DISABLED, SVC_RESET, or SVC_RESTART */
+void Service::StopOrReset(int how) {
+    /* The service is still SVC_RUNNING until its process exits, but if it has
+     * already exited it shoudn't attempt a restart yet. */
+    flags_ &= ~(SVC_RESTARTING | SVC_DISABLED_START);
+
+    if ((how != SVC_DISABLED) && (how != SVC_RESET) && (how != SVC_RESTART)) {
+        /* Hrm, an illegal flag.  Default to SVC_DISABLED */
+        how = SVC_DISABLED;
+    }
+        /* if the service has not yet started, prevent
+         * it from auto-starting with its class
+         */
+    if (how == SVC_RESET) {
+        flags_ |= (flags_ & SVC_RC_DISABLED) ? SVC_DISABLED : SVC_RESET;
+    } else {
+        flags_ |= how;
+    }
+
+    if (pid_) {
+        NOTICE("Service '%s' is being killed...\n", name_.c_str());
+        kill(-pid_, SIGKILL);
+        NotifyStateChange("stopping");
+    } else {
+        NotifyStateChange("stopped");
+    }
+}
+
+void Service::ZapStdio() const {
+    int fd;
+    fd = open("/dev/null", O_RDWR);
+    dup2(fd, 0);
+    dup2(fd, 1);
+    dup2(fd, 2);
+    close(fd);
+}
+
+void Service::OpenConsole() const {
+    int fd;
+    if ((fd = open(console_name.c_str(), O_RDWR)) < 0) {
+        fd = open("/dev/null", O_RDWR);
+    }
+    ioctl(fd, TIOCSCTTY, 0);
+    dup2(fd, 0);
+    dup2(fd, 1);
+    dup2(fd, 2);
+    close(fd);
+}
+
+void Service::PublishSocket(const std::string& name, int fd) const {
+    std::string key = android::base::StringPrintf(ANDROID_SOCKET_ENV_PREFIX "%s",
+                                                  name.c_str());
+    std::string val = android::base::StringPrintf("%d", fd);
+    add_environment(key.c_str(), val.c_str());
+
+    /* make sure we don't close-on-exec */
+    fcntl(fd, F_SETFD, 0);
+}
+
+int ServiceManager::exec_count_ = 0;
+
+ServiceManager::ServiceManager() {
+}
+
+ServiceManager& ServiceManager::GetInstance() {
+    static ServiceManager instance;
+    return instance;
+}
+
+Service* ServiceManager::AddNewService(const std::string& name,
+                                       const std::string& classname,
+                                       const std::vector<std::string>& args,
+                                       std::string* err) {
+    if (!IsValidName(name)) {
+        *err = android::base::StringPrintf("invalid service name '%s'\n", name.c_str());
+        return nullptr;
+    }
+
+    Service* svc = ServiceManager::GetInstance().FindServiceByName(name);
+    if (svc) {
+        *err = android::base::StringPrintf("ignored duplicate definition of service '%s'\n",
+                                           name.c_str());
+        return nullptr;
+    }
+
+    std::unique_ptr<Service> svc_p(new Service(name, classname, args));
+    if (!svc_p) {
+        ERROR("Couldn't allocate service for service '%s'", name.c_str());
+        return nullptr;
+    }
+    svc = svc_p.get();
+    services_.push_back(std::move(svc_p));
+
+    return svc;
+}
+
+Service* ServiceManager::MakeExecOneshotService(const std::vector<std::string>& args) {
+    // Parse the arguments: exec [SECLABEL [UID [GID]*] --] COMMAND ARGS...
+    // SECLABEL can be a - to denote default
+    std::size_t command_arg = 1;
+    for (std::size_t i = 1; i < args.size(); ++i) {
+        if (args[i] == "--") {
+            command_arg = i + 1;
+            break;
+        }
+    }
+    if (command_arg > 4 + NR_SVC_SUPP_GIDS) {
+        ERROR("exec called with too many supplementary group ids\n");
+        return nullptr;
+    }
+
+    if (command_arg >= args.size()) {
+        ERROR("exec called without command\n");
+        return nullptr;
+    }
+    std::vector<std::string> str_args(args.begin() + command_arg, args.end());
+
+    exec_count_++;
+    std::string name = android::base::StringPrintf("exec %d (%s)", exec_count_,
+                                                   str_args[0].c_str());
+    unsigned flags = SVC_EXEC | SVC_ONESHOT;
+
+    std::string seclabel = "";
+    if (command_arg > 2 && args[1] != "-") {
+        seclabel = args[1];
+    }
+    uid_t uid = 0;
+    if (command_arg > 3) {
+        uid = decode_uid(args[2].c_str());
+    }
+    gid_t gid = 0;
+    std::vector<gid_t> supp_gids;
+    if (command_arg > 4) {
+        gid = decode_uid(args[3].c_str());
+        std::size_t nr_supp_gids = command_arg - 1 /* -- */ - 4 /* exec SECLABEL UID GID */;
+        for (size_t i = 0; i < nr_supp_gids; ++i) {
+            supp_gids.push_back(decode_uid(args[4 + i].c_str()));
+        }
+    }
+
+    std::unique_ptr<Service> svc_p(new Service(name, "default", flags, uid, gid,
+                                               supp_gids, seclabel, str_args));
+    if (!svc_p) {
+        ERROR("Couldn't allocate service for exec of '%s'",
+              str_args[0].c_str());
+        return nullptr;
+    }
+    Service* svc = svc_p.get();
+    services_.push_back(std::move(svc_p));
+
+    return svc;
+}
+
+Service* ServiceManager::FindServiceByName(const std::string& name) const {
+    auto svc = std::find_if(services_.begin(), services_.end(),
+                            [&name] (const std::unique_ptr<Service>& s) {
+                                return name == s->name();
+                            });
+    if (svc != services_.end()) {
+        return svc->get();
+    }
+    return nullptr;
+}
+
+Service* ServiceManager::FindServiceByPid(pid_t pid) const {
+    auto svc = std::find_if(services_.begin(), services_.end(),
+                            [&pid] (const std::unique_ptr<Service>& s) {
+                                return s->pid() == pid;
+                            });
+    if (svc != services_.end()) {
+        return svc->get();
+    }
+    return nullptr;
+}
+
+Service* ServiceManager::FindServiceByKeychord(int keychord_id) const {
+    auto svc = std::find_if(services_.begin(), services_.end(),
+                            [&keychord_id] (const std::unique_ptr<Service>& s) {
+                                return s->keychord_id() == keychord_id;
+                            });
+
+    if (svc != services_.end()) {
+        return svc->get();
+    }
+    return nullptr;
+}
+
+void ServiceManager::ForEachService(void (*func)(Service* svc)) const {
+    for (const auto& s : services_) {
+        func(s.get());
+    }
+}
+
+void ServiceManager::ForEachServiceInClass(const std::string& classname,
+                                           void (*func)(Service* svc)) const {
+    for (const auto& s : services_) {
+        if (classname == s->classname()) {
+            func(s.get());
+        }
+    }
+}
+
+void ServiceManager::ForEachServiceWithFlags(unsigned matchflags,
+                                             void (*func)(Service* svc)) const {
+    for (const auto& s : services_) {
+        if (s->flags() & matchflags) {
+            func(s.get());
+        }
+    }
+}
+
+void ServiceManager::RemoveService(const Service& svc)
+{
+    auto svc_it = std::find_if(services_.begin(), services_.end(),
+                               [&svc] (const std::unique_ptr<Service>& s) {
+                                   return svc.name() == s->name();
+                               });
+    if (svc_it == services_.end()) {
+        return;
+    }
+
+    services_.erase(svc_it);
+}
+
+bool ServiceManager::IsValidName(const std::string& name) const
+{
+    if (name.size() > 16) {
+        return false;
+    }
+    for (const auto& c : name) {
+        if (!isalnum(c) && (c != '_') && (c != '-')) {
+            return false;
+        }
+    }
+    return true;
+}
+
+void ServiceManager::DumpState() const
+{
+    for (const auto& s : services_) {
+        s->DumpState();
+    }
+    INFO("\n");
+}
diff --git a/init/service.h b/init/service.h
new file mode 100644
index 0000000..1ecf78a
--- /dev/null
+++ b/init/service.h
@@ -0,0 +1,167 @@
+/*
+ * 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 _INIT_SERVICE_H
+#define _INIT_SERVICE_H
+
+#include <sys/types.h>
+
+#include <cutils/iosched_policy.h>
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "action.h"
+
+#define SVC_DISABLED       0x001  // do not autostart with class
+#define SVC_ONESHOT        0x002  // do not restart on exit
+#define SVC_RUNNING        0x004  // currently active
+#define SVC_RESTARTING     0x008  // waiting to restart
+#define SVC_CONSOLE        0x010  // requires console
+#define SVC_CRITICAL       0x020  // will reboot into recovery if keeps crashing
+#define SVC_RESET          0x040  // Use when stopping a process,
+                                  // but not disabling so it can be restarted with its class.
+#define SVC_RC_DISABLED    0x080  // Remember if the disabled flag was set in the rc script.
+#define SVC_RESTART        0x100  // Use to safely restart (stop, wait, start) a service.
+#define SVC_DISABLED_START 0x200  // A start was requested but it was disabled at the time.
+#define SVC_EXEC           0x400  // This synthetic service corresponds to an 'exec'.
+
+#define NR_SVC_SUPP_GIDS 12    // twelve supplementary groups
+
+class Action;
+class ServiceManager;
+
+struct SocketInfo {
+    SocketInfo();
+    SocketInfo(const std::string& name, const std::string& type, uid_t uid,
+                       gid_t gid, int perm, const std::string& socketcon);
+    std::string name;
+    std::string type;
+    uid_t uid;
+    gid_t gid;
+    int perm;
+    std::string socketcon;
+};
+
+struct ServiceEnvironmentInfo {
+    ServiceEnvironmentInfo();
+    ServiceEnvironmentInfo(const std::string& name, const std::string& value);
+    std::string name;
+    std::string value;
+};
+
+class Service {
+public:
+    Service(const std::string& name, const std::string& classname,
+            const std::vector<std::string>& args);
+
+    Service(const std::string& name, const std::string& classname,
+            unsigned flags, uid_t uid, gid_t gid, const std::vector<gid_t>& supp_gids,
+            const std::string& seclabel,  const std::vector<std::string>& args);
+
+    bool HandleLine(int kw, const std::vector<std::string>& args, std::string* err);
+    bool Start(const std::vector<std::string>& dynamic_args);
+    bool Start();
+    bool StartIfNotDisabled();
+    bool Enable();
+    void Reset();
+    void Stop();
+    void Restart();
+    void RestartIfNeeded(time_t& process_needs_restart);
+    bool Reap();
+    void DumpState() const;
+
+    const std::string& name() const { return name_; }
+    const std::string& classname() const { return classname_; }
+    unsigned flags() const { return flags_; }
+    pid_t pid() const { return pid_; }
+    uid_t uid() const { return uid_; }
+    gid_t gid() const { return gid_; }
+    const std::vector<gid_t>& supp_gids() const { return supp_gids_; }
+    const std::string& seclabel() const { return seclabel_; }
+    const std::vector<int>& keycodes() const { return keycodes_; }
+    int keychord_id() const { return keychord_id_; }
+    void set_keychord_id(int keychord_id) { keychord_id_ = keychord_id; }
+    const std::vector<std::string>& args() const { return args_; }
+
+private:
+    void NotifyStateChange(const std::string& new_state) const;
+    void StopOrReset(int how);
+    void ZapStdio() const;
+    void OpenConsole() const;
+    void PublishSocket(const std::string& name, int fd) const;
+
+    std::string name_;
+    std::string classname_;
+
+    unsigned flags_;
+    pid_t pid_;
+    time_t time_started_;    // time of last start
+    time_t time_crashed_;    // first crash within inspection window
+    int nr_crashed_;         // number of times crashed within window
+
+    uid_t uid_;
+    gid_t gid_;
+    std::vector<gid_t> supp_gids_;
+
+    std::string seclabel_;
+
+    std::vector<SocketInfo> sockets_;
+    std::vector<ServiceEnvironmentInfo> envvars_;
+
+    Action onrestart_;  // Commands to execute on restart.
+
+    std::vector<std::string> writepid_files_;
+
+    // keycodes for triggering this service via /dev/keychord
+    std::vector<int> keycodes_;
+    int keychord_id_;
+
+    IoSchedClass ioprio_class_;
+    int ioprio_pri_;
+
+    std::vector<std::string> args_;
+};
+
+class ServiceManager {
+public:
+    static ServiceManager& GetInstance();
+
+    Service* AddNewService(const std::string& name, const std::string& classname,
+                                           const std::vector<std::string>& args,
+                                           std::string* err);
+    Service* MakeExecOneshotService(const std::vector<std::string>& args);
+    Service* FindServiceByName(const std::string& name) const;
+    Service* FindServiceByPid(pid_t pid) const;
+    Service* FindServiceByKeychord(int keychord_id) const;
+    void ForEachService(void (*func)(Service* svc)) const;
+    void ForEachServiceInClass(const std::string& classname,
+                               void (*func)(Service* svc)) const;
+    void ForEachServiceWithFlags(unsigned matchflags,
+                             void (*func)(Service* svc)) const;
+    void RemoveService(const Service& svc);
+    void DumpState() const;
+private:
+    ServiceManager();
+
+    bool IsValidName(const std::string& name) const;
+
+    static int exec_count_; // Every service needs a unique name.
+    std::vector<std::unique_ptr<Service>> services_;
+};
+
+#endif
diff --git a/init/signal_handler.cpp b/init/signal_handler.cpp
index 39a466d..867abbc 100644
--- a/init/signal_handler.cpp
+++ b/init/signal_handler.cpp
@@ -28,13 +28,12 @@
 #include <cutils/list.h>
 #include <cutils/sockets.h>
 
+#include "action.h"
 #include "init.h"
 #include "log.h"
+#include "service.h"
 #include "util.h"
 
-#define CRITICAL_CRASH_THRESHOLD    4       /* if we crash >4 times ... */
-#define CRITICAL_CRASH_WINDOW       (4*60)  /* ... in 4 minutes, goto recovery */
-
 static int signal_write_fd = -1;
 static int signal_read_fd = -1;
 
@@ -60,11 +59,11 @@
         return false;
     }
 
-    service* svc = service_find_by_pid(pid);
+    Service* svc = ServiceManager::GetInstance().FindServiceByPid(pid);
 
     std::string name;
     if (svc) {
-        name = android::base::StringPrintf("Service '%s' (pid %d)", svc->name, pid);
+        name = android::base::StringPrintf("Service '%s' (pid %d)", svc->name().c_str(), pid);
     } else {
         name = android::base::StringPrintf("Untracked pid %d", pid);
     }
@@ -75,70 +74,11 @@
         return true;
     }
 
-    // TODO: all the code from here down should be a member function on service.
-
-    if (!(svc->flags & SVC_ONESHOT) || (svc->flags & SVC_RESTART)) {
-        NOTICE("Service '%s' (pid %d) killing any children in process group\n", svc->name, pid);
-        kill(-pid, SIGKILL);
-    }
-
-    // Remove any sockets we may have created.
-    for (socketinfo* si = svc->sockets; si; si = si->next) {
-        char tmp[128];
-        snprintf(tmp, sizeof(tmp), ANDROID_SOCKET_DIR"/%s", si->name);
-        unlink(tmp);
-    }
-
-    if (svc->flags & SVC_EXEC) {
-        INFO("SVC_EXEC pid %d finished...\n", svc->pid);
+    if (svc->Reap()) {
         waiting_for_exec = false;
-        list_remove(&svc->slist);
-        free(svc->name);
-        free(svc);
-        return true;
+        ServiceManager::GetInstance().RemoveService(*svc);
     }
 
-    svc->pid = 0;
-    svc->flags &= (~SVC_RUNNING);
-
-    // Oneshot processes go into the disabled state on exit,
-    // except when manually restarted.
-    if ((svc->flags & SVC_ONESHOT) && !(svc->flags & SVC_RESTART)) {
-        svc->flags |= SVC_DISABLED;
-    }
-
-    // Disabled and reset processes do not get restarted automatically.
-    if (svc->flags & (SVC_DISABLED | SVC_RESET))  {
-        svc->NotifyStateChange("stopped");
-        return true;
-    }
-
-    time_t now = gettime();
-    if ((svc->flags & SVC_CRITICAL) && !(svc->flags & SVC_RESTART)) {
-        if (svc->time_crashed + CRITICAL_CRASH_WINDOW >= now) {
-            if (++svc->nr_crashed > CRITICAL_CRASH_THRESHOLD) {
-                ERROR("critical process '%s' exited %d times in %d minutes; "
-                      "rebooting into recovery mode\n", svc->name,
-                      CRITICAL_CRASH_THRESHOLD, CRITICAL_CRASH_WINDOW / 60);
-                android_reboot(ANDROID_RB_RESTART2, 0, "recovery");
-                return true;
-            }
-        } else {
-            svc->time_crashed = now;
-            svc->nr_crashed = 1;
-        }
-    }
-
-    svc->flags &= (~SVC_RESTART);
-    svc->flags |= SVC_RESTARTING;
-
-    // Execute all onrestart commands for this service.
-    struct listnode* node;
-    list_for_each(node, &svc->onrestart.commands) {
-        command* cmd = node_to_item(node, struct command, clist);
-        cmd->func(cmd->nargs, cmd->args);
-    }
-    svc->NotifyStateChange("restarting");
     return true;
 }
 
diff --git a/init/ueventd.cpp b/init/ueventd.cpp
index c63fdaa..75924cb 100644
--- a/init/ueventd.cpp
+++ b/init/ueventd.cpp
@@ -59,11 +59,10 @@
     cb.func_log = selinux_klog_callback;
     selinux_set_callback(SELINUX_CB_LOG, cb);
 
-    char hardware[PROP_VALUE_MAX];
-    property_get("ro.hardware", hardware);
+    std::string hardware = property_get("ro.hardware");
 
     ueventd_parse_config_file("/ueventd.rc");
-    ueventd_parse_config_file(android::base::StringPrintf("/ueventd.%s.rc", hardware).c_str());
+    ueventd_parse_config_file(android::base::StringPrintf("/ueventd.%s.rc", hardware.c_str()).c_str());
 
     device_init();
 
diff --git a/init/util.cpp b/init/util.cpp
index 7f29e94..f6131e3 100644
--- a/init/util.cpp
+++ b/init/util.cpp
@@ -465,3 +465,14 @@
         android::base::StringAppendF(&hex, "%02x", bytes[i]);
     return hex;
 }
+
+/*
+ * Returns true is pathname is a directory
+ */
+bool is_dir(const char* pathname) {
+    struct stat info;
+    if (stat(pathname, &info) == -1) {
+        return false;
+    }
+    return S_ISDIR(info.st_mode);
+}
diff --git a/init/util.h b/init/util.h
index 3aba599..f08cb8d 100644
--- a/init/util.h
+++ b/init/util.h
@@ -64,4 +64,5 @@
 int restorecon(const char *pathname);
 int restorecon_recursive(const char *pathname);
 std::string bytes_to_hex(const uint8_t *bytes, size_t bytes_len);
+bool is_dir(const char* pathname);
 #endif
diff --git a/init/watchdogd.cpp b/init/watchdogd.cpp
index 881a4df..0d16db9 100644
--- a/init/watchdogd.cpp
+++ b/init/watchdogd.cpp
@@ -38,29 +38,30 @@
     int margin = 10;
     if (argc >= 3) margin = atoi(argv[2]);
 
-    NOTICE("watchdogd started (interval %d, margin %d)!\n", interval, margin);
+    NOTICE("started (interval %d, margin %d)!\n", interval, margin);
 
     int fd = open(DEV_NAME, O_RDWR|O_CLOEXEC);
     if (fd == -1) {
-        ERROR("watchdogd: Failed to open %s: %s\n", DEV_NAME, strerror(errno));
+        ERROR("Failed to open %s: %s\n", DEV_NAME, strerror(errno));
         return 1;
     }
 
     int timeout = interval + margin;
     int ret = ioctl(fd, WDIOC_SETTIMEOUT, &timeout);
     if (ret) {
-        ERROR("watchdogd: Failed to set timeout to %d: %s\n", timeout, strerror(errno));
+        ERROR("Failed to set timeout to %d: %s\n", timeout, strerror(errno));
         ret = ioctl(fd, WDIOC_GETTIMEOUT, &timeout);
         if (ret) {
-            ERROR("watchdogd: Failed to get timeout: %s\n", strerror(errno));
+            ERROR("Failed to get timeout: %s\n", strerror(errno));
         } else {
             if (timeout > margin) {
                 interval = timeout - margin;
             } else {
                 interval = 1;
             }
-            ERROR("watchdogd: Adjusted interval to timeout returned by driver: timeout %d, interval %d, margin %d\n",
-                  timeout, interval, margin);
+            WARNING("Adjusted interval to timeout returned by driver:"
+                    " timeout %d, interval %d, margin %d\n",
+                    timeout, interval, margin);
         }
     }
 
diff --git a/libcutils/Android.mk b/libcutils/Android.mk
index d5a9050..5330949 100644
--- a/libcutils/Android.mk
+++ b/libcutils/Android.mk
@@ -73,7 +73,7 @@
 LOCAL_SRC_FILES := $(commonSources) $(commonHostSources) dlmalloc_stubs.c
 LOCAL_STATIC_LIBRARIES := liblog
 ifneq ($(HOST_OS),windows)
-LOCAL_CFLAGS += -Werror
+LOCAL_CFLAGS += -Werror -Wall -Wextra
 endif
 LOCAL_MULTILIB := both
 include $(BUILD_HOST_STATIC_LIBRARY)
@@ -83,7 +83,7 @@
 LOCAL_SRC_FILES := $(commonSources) $(commonHostSources) dlmalloc_stubs.c
 LOCAL_SHARED_LIBRARIES := liblog
 ifneq ($(HOST_OS),windows)
-LOCAL_CFLAGS += -Werror
+LOCAL_CFLAGS += -Werror -Wall -Wextra
 endif
 LOCAL_MULTILIB := both
 include $(BUILD_HOST_SHARED_LIBRARY)
@@ -122,7 +122,7 @@
 
 LOCAL_C_INCLUDES := $(libcutils_c_includes)
 LOCAL_STATIC_LIBRARIES := liblog
-LOCAL_CFLAGS += -Werror -std=gnu90
+LOCAL_CFLAGS += -Werror -Wall -Wextra -std=gnu90
 include $(BUILD_STATIC_LIBRARY)
 
 include $(CLEAR_VARS)
@@ -131,7 +131,7 @@
 # liblog symbols present in libcutils.
 LOCAL_WHOLE_STATIC_LIBRARIES := libcutils liblog
 LOCAL_SHARED_LIBRARIES := liblog
-LOCAL_CFLAGS += -Werror
+LOCAL_CFLAGS += -Werror -Wall -Wextra
 LOCAL_C_INCLUDES := $(libcutils_c_includes)
 include $(BUILD_SHARED_LIBRARY)
 
diff --git a/libcutils/android_reboot.c b/libcutils/android_reboot.c
index 6ae23c1..af7e189 100644
--- a/libcutils/android_reboot.c
+++ b/libcutils/android_reboot.c
@@ -14,43 +14,108 @@
  * limitations under the License.
  */
 
-#include <unistd.h>
-#include <sys/reboot.h>
-#include <sys/syscall.h>
-#include <sys/types.h>
-#include <sys/stat.h>
+#include <errno.h>
 #include <fcntl.h>
 #include <mntent.h>
+#include <stdbool.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
+#include <sys/cdefs.h>
+#include <sys/mount.h>
+#include <sys/reboot.h>
+#include <sys/stat.h>
+#include <sys/syscall.h>
+#include <sys/types.h>
+#include <unistd.h>
 
 #include <cutils/android_reboot.h>
+#include <cutils/klog.h>
+#include <cutils/list.h>
 
-#define UNUSED __attribute__((unused))
+#define TAG "android_reboot"
+#define READONLY_CHECK_MS 5000
+#define READONLY_CHECK_TIMES 50
 
-/* Check to see if /proc/mounts contains any writeable filesystems
- * backed by a block device.
- * Return true if none found, else return false.
+typedef struct {
+    struct listnode list;
+    struct mntent entry;
+} mntent_list;
+
+static bool has_mount_option(const char* opts, const char* opt_to_find)
+{
+  bool ret = false;
+  char* copy = NULL;
+  char* opt;
+  char* rem;
+
+  while ((opt = strtok_r(copy ? NULL : (copy = strdup(opts)), ",", &rem))) {
+      if (!strcmp(opt, opt_to_find)) {
+          ret = true;
+          break;
+      }
+  }
+
+  free(copy);
+  return ret;
+}
+
+static bool is_block_device(const char* fsname)
+{
+    return !strncmp(fsname, "/dev/block", 10);
+}
+
+/* Find all read+write block devices in /proc/mounts and add them to
+ * |rw_entries|.
  */
-static int remount_ro_done(void)
+static void find_rw(struct listnode* rw_entries)
 {
     FILE* fp;
     struct mntent* mentry;
-    int found_rw_fs = 0;
 
     if ((fp = setmntent("/proc/mounts", "r")) == NULL) {
-        /* If we can't read /proc/mounts, just give up. */
-        return 1;
+        KLOG_WARNING(TAG, "Failed to open /proc/mounts.\n");
+        return;
     }
     while ((mentry = getmntent(fp)) != NULL) {
-        if (!strncmp(mentry->mnt_fsname, "/dev/block", 10) && strstr(mentry->mnt_opts, "rw,")) {
-            found_rw_fs = 1;
-            break;
+        if (is_block_device(mentry->mnt_fsname) &&
+            has_mount_option(mentry->mnt_opts, "rw")) {
+            mntent_list* item = (mntent_list*)calloc(1, sizeof(mntent_list));
+            item->entry = *mentry;
+            item->entry.mnt_fsname = strdup(mentry->mnt_fsname);
+            item->entry.mnt_dir = strdup(mentry->mnt_dir);
+            item->entry.mnt_type = strdup(mentry->mnt_type);
+            item->entry.mnt_opts = strdup(mentry->mnt_opts);
+            list_add_tail(rw_entries, &item->list);
         }
     }
     endmntent(fp);
+}
 
-    return !found_rw_fs;
+static void free_entries(struct listnode* entries)
+{
+    struct listnode* node;
+    struct listnode* n;
+    list_for_each_safe(node, n, entries) {
+        mntent_list* item = node_to_item(node, mntent_list, list);
+        free(item->entry.mnt_fsname);
+        free(item->entry.mnt_dir);
+        free(item->entry.mnt_type);
+        free(item->entry.mnt_opts);
+        free(item);
+    }
+}
+
+static mntent_list* find_item(struct listnode* rw_entries, const char* fsname_to_find)
+{
+    struct listnode* node;
+    list_for_each(node, rw_entries) {
+        mntent_list* item = node_to_item(node, mntent_list, list);
+        if (!strcmp(item->entry.mnt_fsname, fsname_to_find)) {
+            return item;
+        }
+    }
+    return NULL;
 }
 
 /* Remounting filesystems read-only is difficult when there are files
@@ -64,38 +129,92 @@
  * repeatedly until there are no more writable filesystems mounted on
  * block devices.
  */
-static void remount_ro(void)
+static void remount_ro(void (*cb_on_remount)(const struct mntent*))
 {
-    int fd, cnt = 0;
+    int fd, cnt;
+    FILE* fp;
+    struct mntent* mentry;
+    struct listnode* node;
+
+    list_declare(rw_entries);
+    list_declare(ro_entries);
+
+    sync();
+    find_rw(&rw_entries);
 
     /* Trigger the remount of the filesystems as read-only,
      * which also marks them clean.
      */
-    fd = open("/proc/sysrq-trigger", O_WRONLY);
+    fd = TEMP_FAILURE_RETRY(open("/proc/sysrq-trigger", O_WRONLY));
     if (fd < 0) {
-        return;
+        KLOG_WARNING(TAG, "Failed to open sysrq-trigger.\n");
+        /* TODO: Try to remount each rw parition manually in readonly mode.
+         * This may succeed if no process is using the partition.
+         */
+        goto out;
     }
-    write(fd, "u", 1);
+    if (TEMP_FAILURE_RETRY(write(fd, "u", 1)) != 1) {
+        close(fd);
+        KLOG_WARNING(TAG, "Failed to write to sysrq-trigger.\n");
+        /* TODO: The same. Manually remount the paritions. */
+        goto out;
+    }
     close(fd);
 
-
     /* Now poll /proc/mounts till it's done */
-    while (!remount_ro_done() && (cnt < 50)) {
-        usleep(100000);
+    cnt = 0;
+    while (cnt < READONLY_CHECK_TIMES) {
+        if ((fp = setmntent("/proc/mounts", "r")) == NULL) {
+            /* If we can't read /proc/mounts, just give up. */
+            KLOG_WARNING(TAG, "Failed to open /proc/mounts.\n");
+            goto out;
+        }
+        while ((mentry = getmntent(fp)) != NULL) {
+            if (!is_block_device(mentry->mnt_fsname) ||
+                !has_mount_option(mentry->mnt_opts, "ro")) {
+                continue;
+            }
+            mntent_list* item = find_item(&rw_entries, mentry->mnt_fsname);
+            if (item) {
+                /* |item| has now been ro remounted. */
+                list_remove(&item->list);
+                list_add_tail(&ro_entries, &item->list);
+            }
+        }
+        endmntent(fp);
+        if (list_empty(&rw_entries)) {
+            /* All rw block devices are now readonly. */
+            break;
+        }
+        TEMP_FAILURE_RETRY(
+            usleep(READONLY_CHECK_MS * 1000 / READONLY_CHECK_TIMES));
         cnt++;
     }
 
-    return;
+    list_for_each(node, &rw_entries) {
+        mntent_list* item = node_to_item(node, mntent_list, list);
+        KLOG_WARNING(TAG, "Failed to remount %s in readonly mode.\n",
+                     item->entry.mnt_fsname);
+    }
+
+    if (cb_on_remount) {
+        list_for_each(node, &ro_entries) {
+            mntent_list* item = node_to_item(node, mntent_list, list);
+            cb_on_remount(&item->entry);
+        }
+    }
+
+out:
+    free_entries(&rw_entries);
+    free_entries(&ro_entries);
 }
 
-
-int android_reboot(int cmd, int flags UNUSED, const char *arg)
+int android_reboot_with_callback(
+    int cmd, int flags __unused, const char *arg,
+    void (*cb_on_remount)(const struct mntent*))
 {
     int ret;
-
-    sync();
-    remount_ro();
-
+    remount_ro(cb_on_remount);
     switch (cmd) {
         case ANDROID_RB_RESTART:
             ret = reboot(RB_AUTOBOOT);
@@ -117,3 +236,7 @@
     return ret;
 }
 
+int android_reboot(int cmd, int flags, const char *arg)
+{
+    return android_reboot_with_callback(cmd, flags, arg, NULL);
+}
diff --git a/libcutils/fs_config.c b/libcutils/fs_config.c
index cb77ee6..5f6f8f9 100644
--- a/libcutils/fs_config.c
+++ b/libcutils/fs_config.c
@@ -118,6 +118,7 @@
     { 00550, AID_DHCP,      AID_SHELL,     0, "system/etc/dhcpcd/dhcpcd-run-hooks" },
     { 00555, AID_ROOT,      AID_ROOT,      0, "system/etc/ppp/*" },
     { 00555, AID_ROOT,      AID_ROOT,      0, "system/etc/rc.*" },
+    { 00440, AID_ROOT,      AID_ROOT,      0, "system/etc/recovery.img" },
     { 00444, AID_ROOT,      AID_ROOT,      0, conf_dir + 1 },
     { 00444, AID_ROOT,      AID_ROOT,      0, conf_file + 1 },
     { 00644, AID_SYSTEM,    AID_SYSTEM,    0, "data/app/*" },
@@ -160,8 +161,7 @@
     const char *out = getenv("OUT");
     if (out && *out) {
         char *name = NULL;
-        asprintf(&name, "%s%s", out, dir ? conf_dir : conf_file);
-        if (name) {
+        if (asprintf(&name, "%s%s", out, dir ? conf_dir : conf_file) != -1) {
             fd = TEMP_FAILURE_RETRY(open(name, O_RDONLY | O_BINARY));
             free(name);
         }
diff --git a/libcutils/iosched_policy.c b/libcutils/iosched_policy.c
index 8946d3c..71bc94b 100644
--- a/libcutils/iosched_policy.c
+++ b/libcutils/iosched_policy.c
@@ -23,7 +23,7 @@
 
 #include <cutils/iosched_policy.h>
 
-#ifdef HAVE_ANDROID_OS
+#if defined(__ANDROID__)
 #include <linux/ioprio.h>
 #include <sys/syscall.h>
 #define __android_unused
@@ -32,7 +32,7 @@
 #endif
 
 int android_set_ioprio(int pid __android_unused, IoSchedClass clazz __android_unused, int ioprio __android_unused) {
-#ifdef HAVE_ANDROID_OS
+#if defined(__ANDROID__)
     if (syscall(SYS_ioprio_set, IOPRIO_WHO_PROCESS, pid, ioprio | (clazz << IOPRIO_CLASS_SHIFT))) {
         return -1;
     }
@@ -41,7 +41,7 @@
 }
 
 int android_get_ioprio(int pid __android_unused, IoSchedClass *clazz, int *ioprio) {
-#ifdef HAVE_ANDROID_OS
+#if defined(__ANDROID__)
     int rc;
 
     if ((rc = syscall(SYS_ioprio_get, IOPRIO_WHO_PROCESS, pid)) < 0) {
diff --git a/libcutils/process_name.c b/libcutils/process_name.c
index cc931eb..5d28b6f 100644
--- a/libcutils/process_name.c
+++ b/libcutils/process_name.c
@@ -25,19 +25,19 @@
 #include <unistd.h>
 
 #include <cutils/process_name.h>
-#ifdef HAVE_ANDROID_OS
+#if defined(__ANDROID__)
 #include <cutils/properties.h>
 #endif
 
 #define PROCESS_NAME_DEVICE "/sys/qemu_trace/process_name"
 
 static const char* process_name = "unknown";
-#ifdef HAVE_ANDROID_OS
+#if defined(__ANDROID__)
 static int running_in_emulator = -1;
 #endif
 
 void set_process_name(const char* new_name) {
-#ifdef HAVE_ANDROID_OS
+#if defined(__ANDROID__)
     char  propBuf[PROPERTY_VALUE_MAX];
 #endif
 
@@ -59,7 +59,7 @@
     }
 #endif
 
-#ifdef HAVE_ANDROID_OS
+#if defined(__ANDROID__)
     // If we know we are not running in the emulator, then return.
     if (running_in_emulator == 0) {
         return;
diff --git a/libcutils/record_stream.c b/libcutils/record_stream.c
index 6994904..2bc4226 100644
--- a/libcutils/record_stream.c
+++ b/libcutils/record_stream.c
@@ -22,7 +22,7 @@
 #include <cutils/record_stream.h>
 #include <string.h>
 #include <stdint.h>
-#ifdef HAVE_WINSOCK
+#if defined(_WIN32)
 #include <winsock2.h>   /* for ntohl */
 #else
 #include <netinet/in.h>
diff --git a/libcutils/sched_policy.c b/libcutils/sched_policy.c
index dfc8777..103ff66 100644
--- a/libcutils/sched_policy.c
+++ b/libcutils/sched_policy.c
@@ -37,7 +37,7 @@
    return p == SP_DEFAULT ? SP_SYSTEM_DEFAULT : p;
 }
 
-#if defined(HAVE_ANDROID_OS)
+#if defined(__ANDROID__)
 
 #include <pthread.h>
 #include <sched.h>
@@ -142,7 +142,7 @@
  */
 static int getSchedulerGroup(int tid, char* buf, size_t bufLen)
 {
-#ifdef HAVE_ANDROID_OS
+#if defined(__ANDROID__)
     char pathBuf[32];
     char lineBuf[256];
     FILE *fp;
diff --git a/libcutils/socket_inaddr_any_server.c b/libcutils/socket_inaddr_any_server.c
index 6c849de..7f0ccb8 100644
--- a/libcutils/socket_inaddr_any_server.c
+++ b/libcutils/socket_inaddr_any_server.c
@@ -20,7 +20,7 @@
 #include <string.h>
 #include <unistd.h>
 
-#ifndef HAVE_WINSOCK
+#if !defined(_WIN32)
 #include <sys/socket.h>
 #include <sys/select.h>
 #include <sys/types.h>
diff --git a/libcutils/socket_local_client.c b/libcutils/socket_local_client.c
index 7b42daa..2526146 100644
--- a/libcutils/socket_local_client.c
+++ b/libcutils/socket_local_client.c
@@ -22,7 +22,7 @@
 
 #include <cutils/sockets.h>
 
-#ifdef HAVE_WINSOCK
+#if defined(_WIN32)
 
 int socket_local_client(const char *name, int namespaceId, int type)
 {
@@ -30,7 +30,7 @@
     return -1;
 }
 
-#else /* !HAVE_WINSOCK */
+#else /* !_WIN32 */
 
 #include <sys/socket.h>
 #include <sys/un.h>
@@ -165,4 +165,4 @@
     return s;
 }
 
-#endif /* !HAVE_WINSOCK */
+#endif /* !_WIN32 */
diff --git a/libcutils/socket_local_server.c b/libcutils/socket_local_server.c
index 60eb86b..c9acdad 100644
--- a/libcutils/socket_local_server.c
+++ b/libcutils/socket_local_server.c
@@ -23,7 +23,7 @@
 #include <errno.h>
 #include <stddef.h>
 
-#ifdef HAVE_WINSOCK
+#if defined(_WIN32)
 
 int socket_local_server(const char *name, int namespaceId, int type)
 {
@@ -31,7 +31,7 @@
     return -1;
 }
 
-#else /* !HAVE_WINSOCK */
+#else /* !_WIN32 */
 
 #include <sys/socket.h>
 #include <sys/un.h>
@@ -123,4 +123,4 @@
     return s;
 }
 
-#endif /* !HAVE_WINSOCK */
+#endif /* !_WIN32 */
diff --git a/libcutils/socket_loopback_client.c b/libcutils/socket_loopback_client.c
index 9aed7b7..e14cffb 100644
--- a/libcutils/socket_loopback_client.c
+++ b/libcutils/socket_loopback_client.c
@@ -20,7 +20,7 @@
 #include <string.h>
 #include <unistd.h>
 
-#ifndef HAVE_WINSOCK
+#if !defined(_WIN32)
 #include <sys/socket.h>
 #include <sys/select.h>
 #include <sys/types.h>
diff --git a/libcutils/socket_loopback_server.c b/libcutils/socket_loopback_server.c
index 71afce7..b600e34 100644
--- a/libcutils/socket_loopback_server.c
+++ b/libcutils/socket_loopback_server.c
@@ -22,7 +22,7 @@
 
 #define LISTEN_BACKLOG 4
 
-#ifndef HAVE_WINSOCK
+#if !defined(_WIN32)
 #include <sys/socket.h>
 #include <sys/select.h>
 #include <sys/types.h>
diff --git a/libcutils/socket_network_client.c b/libcutils/socket_network_client.c
index e0031ba..3300b8f 100644
--- a/libcutils/socket_network_client.c
+++ b/libcutils/socket_network_client.c
@@ -29,77 +29,78 @@
 
 #include <cutils/sockets.h>
 
-/* Connect to port on the IP interface. type is
- * SOCK_STREAM or SOCK_DGRAM. 
- * return is a file descriptor or -1 on error
- */
-int socket_network_client(const char *host, int port, int type)
-{
-    return socket_network_client_timeout(host, port, type, 0);
+static int toggle_O_NONBLOCK(int s) {
+    int flags = fcntl(s, F_GETFL);
+    if (flags == -1 || fcntl(s, F_SETFL, flags ^ O_NONBLOCK) == -1) {
+        close(s);
+        return -1;
+    }
+    return s;
 }
 
-/* Connect to port on the IP interface. type is SOCK_STREAM or SOCK_DGRAM.
- * timeout in seconds return is a file descriptor or -1 on error
- */
-int socket_network_client_timeout(const char *host, int port, int type, int timeout)
-{
-    struct hostent *hp;
-    struct sockaddr_in addr;
-    int s;
-    int flags = 0, error = 0, ret = 0;
-    fd_set rset, wset;
-    socklen_t len = sizeof(error);
-    struct timeval ts;
+// Connect to the given host and port.
+// 'timeout' is in seconds (0 for no timeout).
+// Returns a file descriptor or -1 on error.
+// On error, check *getaddrinfo_error (for use with gai_strerror) first;
+// if that's 0, use errno instead.
+int socket_network_client_timeout(const char* host, int port, int type, int timeout,
+                                  int* getaddrinfo_error) {
+    struct addrinfo hints;
+    memset(&hints, 0, sizeof(hints));
+    hints.ai_family = AF_UNSPEC;
+    hints.ai_socktype = type;
 
+    char port_str[16];
+    snprintf(port_str, sizeof(port_str), "%d", port);
+
+    struct addrinfo* addrs;
+    *getaddrinfo_error = getaddrinfo(host, port_str, &hints, &addrs);
+    if (*getaddrinfo_error != 0) {
+        return -1;
+    }
+
+    // TODO: try all the addresses if there's more than one?
+    int family = addrs[0].ai_family;
+    int protocol = addrs[0].ai_protocol;
+    socklen_t addr_len = addrs[0].ai_addrlen;
+    struct sockaddr_storage addr;
+    memcpy(&addr, addrs[0].ai_addr, addr_len);
+
+    freeaddrinfo(addrs);
+
+    // The Mac doesn't have SOCK_NONBLOCK.
+    int s = socket(family, type, protocol);
+    if (s == -1 || toggle_O_NONBLOCK(s) == -1) return -1;
+
+    int rc = connect(s, (const struct sockaddr*) &addr, addr_len);
+    if (rc == 0) {
+        return toggle_O_NONBLOCK(s);
+    } else if (rc == -1 && errno != EINPROGRESS) {
+        close(s);
+        return -1;
+    }
+
+    fd_set r_set;
+    FD_ZERO(&r_set);
+    FD_SET(s, &r_set);
+    fd_set w_set = r_set;
+
+    struct timeval ts;
     ts.tv_sec = timeout;
     ts.tv_usec = 0;
-
-    hp = gethostbyname(host);
-    if (hp == 0) return -1;
-
-    memset(&addr, 0, sizeof(addr));
-    addr.sin_family = hp->h_addrtype;
-    addr.sin_port = htons(port);
-    memcpy(&addr.sin_addr, hp->h_addr, hp->h_length);
-
-    s = socket(hp->h_addrtype, type, 0);
-    if (s < 0) return -1;
-
-    if ((flags = fcntl(s, F_GETFL, 0)) < 0) {
+    if ((rc = select(s + 1, &r_set, &w_set, NULL, (timeout != 0) ? &ts : NULL)) == -1) {
         close(s);
         return -1;
     }
-
-    if (fcntl(s, F_SETFL, flags | O_NONBLOCK) < 0) {
-        close(s);
-        return -1;
-    }
-
-    if ((ret = connect(s, (struct sockaddr *) &addr, sizeof(addr))) < 0) {
-        if (errno != EINPROGRESS) {
-            close(s);
-            return -1;
-        }
-    }
-
-    if (ret == 0)
-        goto done;
-
-    FD_ZERO(&rset);
-    FD_SET(s, &rset);
-    wset = rset;
-
-    if ((ret = select(s + 1, &rset, &wset, NULL, (timeout) ? &ts : NULL)) < 0) {
-        close(s);
-        return -1;
-    }
-    if (ret == 0) {   // we had a timeout
+    if (rc == 0) {   // we had a timeout
         errno = ETIMEDOUT;
         close(s);
         return -1;
     }
 
-    if (FD_ISSET(s, &rset) || FD_ISSET(s, &wset)) {
+    int error = 0;
+    socklen_t len = sizeof(error);
+    if (FD_ISSET(s, &r_set) || FD_ISSET(s, &w_set)) {
         if (getsockopt(s, SOL_SOCKET, SO_ERROR, &error, &len) < 0) {
             close(s);
             return -1;
@@ -115,11 +116,10 @@
         return -1;
     }
 
-done:
-    if (fcntl(s, F_SETFL, flags) < 0) {
-        close(s);
-        return -1;
-    }
+    return toggle_O_NONBLOCK(s);
+}
 
-    return s;
+int socket_network_client(const char* host, int port, int type) {
+    int getaddrinfo_error;
+    return socket_network_client_timeout(host, port, type, 0, &getaddrinfo_error);
 }
diff --git a/libcutils/sockets.c b/libcutils/sockets.c
index 15ede2b..d438782 100644
--- a/libcutils/sockets.c
+++ b/libcutils/sockets.c
@@ -17,7 +17,7 @@
 #include <cutils/sockets.h>
 #include <log/log.h>
 
-#ifdef HAVE_ANDROID_OS
+#if defined(__ANDROID__)
 /* For the socket trust (credentials) check */
 #include <private/android_filesystem_config.h>
 #define __android_unused
@@ -27,7 +27,7 @@
 
 bool socket_peer_is_trusted(int fd __android_unused)
 {
-#ifdef HAVE_ANDROID_OS
+#if defined(__ANDROID__)
     struct ucred cr;
     socklen_t len = sizeof(cr);
     int n = getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &cr, &len);
diff --git a/liblog/Android.mk b/liblog/Android.mk
index ce282bd..930dcf7 100644
--- a/liblog/Android.mk
+++ b/liblog/Android.mk
@@ -24,11 +24,7 @@
 # so make sure we do not regret hard-coding it as follows:
 liblog_cflags := -DLIBLOG_LOG_TAG=1005
 
-ifneq ($(TARGET_USES_LOGD),false)
 liblog_sources := logd_write.c
-else
-liblog_sources := logd_write_kern.c
-endif
 
 # some files must not be compiled when building against Mingw
 # they correspond to features not used by our host development tools
@@ -47,11 +43,7 @@
 ifeq ($(strip $(USE_MINGW)),)
 liblog_target_sources += logprint.c
 endif
-ifneq ($(TARGET_USES_LOGD),false)
 liblog_target_sources += log_read.c
-else
-liblog_target_sources += log_read_kern.c
-endif
 
 # Shared and static library for host
 # ========================================================
diff --git a/liblog/log_read.c b/liblog/log_read.c
index 9c4af30..cfc8a7a 100644
--- a/liblog/log_read.c
+++ b/liblog/log_read.c
@@ -37,7 +37,7 @@
 /* branchless on many architectures. */
 #define min(x,y) ((y) ^ (((x) ^ (y)) & -((x) < (y))))
 
-#if (defined(USE_MINGW) || defined(HAVE_WINSOCK))
+#if defined(_WIN32)
 #define WEAK static
 #else
 #define WEAK __attribute__((weak))
@@ -48,7 +48,7 @@
 
 /* Private copy of ../libcutils/socket_local_client.c prevent library loops */
 
-#ifdef HAVE_WINSOCK
+#if defined(_WIN32)
 
 int WEAK socket_local_client(const char *name, int namespaceId, int type)
 {
@@ -56,7 +56,7 @@
     return -ENOSYS;
 }
 
-#else /* !HAVE_WINSOCK */
+#else /* !_WIN32 */
 
 #include <sys/socket.h>
 #include <sys/un.h>
@@ -193,7 +193,7 @@
     return s;
 }
 
-#endif /* !HAVE_WINSOCK */
+#endif /* !_WIN32 */
 /* End of ../libcutils/socket_local_client.c */
 
 #define logger_for_each(logger, logger_list) \
diff --git a/liblog/log_read_kern.c b/liblog/log_read_kern.c
deleted file mode 100644
index 69b405c..0000000
--- a/liblog/log_read_kern.c
+++ /dev/null
@@ -1,742 +0,0 @@
-/*
-** Copyright 2013-2014, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-**     http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-#define _GNU_SOURCE /* asprintf for x86 host */
-#include <errno.h>
-#include <fcntl.h>
-#include <poll.h>
-#include <string.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/cdefs.h>
-#include <sys/ioctl.h>
-
-#include <cutils/list.h>
-#include <log/log.h>
-#include <log/logger.h>
-
-#define __LOGGERIO     0xAE
-
-#define LOGGER_GET_LOG_BUF_SIZE    _IO(__LOGGERIO, 1) /* size of log */
-#define LOGGER_GET_LOG_LEN         _IO(__LOGGERIO, 2) /* used log len */
-#define LOGGER_GET_NEXT_ENTRY_LEN  _IO(__LOGGERIO, 3) /* next entry len */
-#define LOGGER_FLUSH_LOG           _IO(__LOGGERIO, 4) /* flush log */
-#define LOGGER_GET_VERSION         _IO(__LOGGERIO, 5) /* abi version */
-#define LOGGER_SET_VERSION         _IO(__LOGGERIO, 6) /* abi version */
-
-typedef char bool;
-#define false (const bool)0
-#define true (const bool)1
-
-#define LOG_FILE_DIR "/dev/log/"
-
-/* timeout in milliseconds */
-#define LOG_TIMEOUT_FLUSH 5
-#define LOG_TIMEOUT_NEVER -1
-
-#define logger_for_each(logger, logger_list) \
-    for (logger = node_to_item((logger_list)->node.next, struct logger, node); \
-         logger != node_to_item(&(logger_list)->node, struct logger, node); \
-         logger = node_to_item((logger)->node.next, struct logger, node))
-
-#ifndef __unused
-#define __unused __attribute__((unused))
-#endif
-
-/* In the future, we would like to make this list extensible */
-static const char *LOG_NAME[LOG_ID_MAX] = {
-    [LOG_ID_MAIN] = "main",
-    [LOG_ID_RADIO] = "radio",
-    [LOG_ID_EVENTS] = "events",
-    [LOG_ID_SYSTEM] = "system",
-    [LOG_ID_CRASH] = "crash",
-    [LOG_ID_KERNEL] = "kernel",
-};
-
-const char *android_log_id_to_name(log_id_t log_id)
-{
-    if (log_id >= LOG_ID_MAX) {
-        log_id = LOG_ID_MAIN;
-    }
-    return LOG_NAME[log_id];
-}
-
-static int accessmode(int mode)
-{
-    if ((mode & ANDROID_LOG_ACCMODE) == ANDROID_LOG_WRONLY) {
-        return W_OK;
-    }
-    if ((mode & ANDROID_LOG_ACCMODE) == ANDROID_LOG_RDWR) {
-        return R_OK | W_OK;
-    }
-    return R_OK;
-}
-
-/* repeated fragment */
-static int check_allocate_accessible(char **n, const char *b, int mode)
-{
-    *n = NULL;
-
-    if (!b) {
-        return -EINVAL;
-    }
-
-    asprintf(n, LOG_FILE_DIR "%s", b);
-    if (!*n) {
-        return -1;
-    }
-
-    return access(*n, accessmode(mode));
-}
-
-log_id_t android_name_to_log_id(const char *logName)
-{
-    const char *b;
-    char *n;
-    int ret;
-
-    if (!logName) {
-        return -1; /* NB: log_id_t is unsigned */
-    }
-    b = strrchr(logName, '/');
-    if (!b) {
-        b = logName;
-    } else {
-        ++b;
-    }
-
-    ret = check_allocate_accessible(&n, b, ANDROID_LOG_RDONLY);
-    free(n);
-    if (ret) {
-        return ret;
-    }
-
-    for(ret = LOG_ID_MIN; ret < LOG_ID_MAX; ++ret) {
-        const char *l = LOG_NAME[ret];
-        if (l && !strcmp(b, l)) {
-            return ret;
-        }
-    }
-    return -1;   /* should never happen */
-}
-
-struct logger_list {
-    struct listnode node;
-    int mode;
-    unsigned int tail;
-    pid_t pid;
-    unsigned int queued_lines;
-    int timeout_ms;
-    int error;
-    bool flush;
-    bool valid_entry; /* valiant(?) effort to deal with memory starvation */
-    struct log_msg entry;
-};
-
-struct log_list {
-    struct listnode node;
-    struct log_msg entry; /* Truncated to event->len() + 1 to save space */
-};
-
-struct logger {
-    struct listnode node;
-    struct logger_list *top;
-    int fd;
-    log_id_t id;
-    short *revents;
-    struct listnode log_list;
-};
-
-/* android_logger_alloc unimplemented, no use case */
-/* android_logger_free not exported */
-static void android_logger_free(struct logger *logger)
-{
-    if (!logger) {
-        return;
-    }
-
-    while (!list_empty(&logger->log_list)) {
-        struct log_list *entry = node_to_item(
-            list_head(&logger->log_list), struct log_list, node);
-        list_remove(&entry->node);
-        free(entry);
-        if (logger->top->queued_lines) {
-            logger->top->queued_lines--;
-        }
-    }
-
-    if (logger->fd >= 0) {
-        close(logger->fd);
-    }
-
-    list_remove(&logger->node);
-
-    free(logger);
-}
-
-log_id_t android_logger_get_id(struct logger *logger)
-{
-    return logger->id;
-}
-
-/* worker for sending the command to the logger */
-static int logger_ioctl(struct logger *logger, int cmd, int mode)
-{
-    char *n;
-    int  f, ret;
-
-    if (!logger || !logger->top) {
-        return -EFAULT;
-    }
-
-    if (((mode & ANDROID_LOG_ACCMODE) == ANDROID_LOG_RDWR)
-            || (((mode ^ logger->top->mode) & ANDROID_LOG_ACCMODE) == 0)) {
-        return ioctl(logger->fd, cmd);
-    }
-
-    /* We go here if android_logger_list_open got mode wrong for this ioctl */
-    ret = check_allocate_accessible(&n, android_log_id_to_name(logger->id), mode);
-    if (ret) {
-        free(n);
-        return ret;
-    }
-
-    f = open(n, mode);
-    free(n);
-    if (f < 0) {
-        return f;
-    }
-
-    ret = ioctl(f, cmd);
-    close (f);
-
-    return ret;
-}
-
-int android_logger_clear(struct logger *logger)
-{
-    return logger_ioctl(logger, LOGGER_FLUSH_LOG, ANDROID_LOG_WRONLY);
-}
-
-/* returns the total size of the log's ring buffer */
-long android_logger_get_log_size(struct logger *logger)
-{
-    return logger_ioctl(logger, LOGGER_GET_LOG_BUF_SIZE, ANDROID_LOG_RDWR);
-}
-
-int android_logger_set_log_size(struct logger *logger __unused,
-                                unsigned long size __unused)
-{
-    return -ENOTSUP;
-}
-
-/*
- * returns the readable size of the log's ring buffer (that is, amount of the
- * log consumed)
- */
-long android_logger_get_log_readable_size(struct logger *logger)
-{
-    return logger_ioctl(logger, LOGGER_GET_LOG_LEN, ANDROID_LOG_RDONLY);
-}
-
-/*
- * returns the logger version
- */
-int android_logger_get_log_version(struct logger *logger)
-{
-    int ret = logger_ioctl(logger, LOGGER_GET_VERSION, ANDROID_LOG_RDWR);
-    return (ret < 0) ? 1 : ret;
-}
-
-/*
- * returns statistics
- */
-static const char unsupported[] = "18\nNot Supported\n\f";
-
-ssize_t android_logger_get_statistics(struct logger_list *logger_list __unused,
-                                      char *buf, size_t len)
-{
-    strncpy(buf, unsupported, len);
-    return -ENOTSUP;
-}
-
-ssize_t android_logger_get_prune_list(struct logger_list *logger_list __unused,
-                                      char *buf, size_t len)
-{
-    strncpy(buf, unsupported, len);
-    return -ENOTSUP;
-}
-
-int android_logger_set_prune_list(struct logger_list *logger_list __unused,
-                                  char *buf, size_t len)
-{
-    static const char unsupported_error[] = "Unsupported";
-    strncpy(buf, unsupported, len);
-    return -ENOTSUP;
-}
-
-struct logger_list *android_logger_list_alloc(int mode,
-                                              unsigned int tail,
-                                              pid_t pid)
-{
-    struct logger_list *logger_list;
-
-    logger_list = calloc(1, sizeof(*logger_list));
-    if (!logger_list) {
-        return NULL;
-    }
-    list_init(&logger_list->node);
-    logger_list->mode = mode;
-    logger_list->tail = tail;
-    logger_list->pid = pid;
-    return logger_list;
-}
-
-struct logger_list *android_logger_list_alloc_time(int mode,
-                                                   log_time start __unused,
-                                                   pid_t pid)
-{
-    return android_logger_list_alloc(mode, 0, pid);
-}
-
-/* android_logger_list_register unimplemented, no use case */
-/* android_logger_list_unregister unimplemented, no use case */
-
-/* Open the named log and add it to the logger list */
-struct logger *android_logger_open(struct logger_list *logger_list,
-                                   log_id_t id)
-{
-    struct listnode *node;
-    struct logger *logger;
-    char *n;
-
-    if (!logger_list || (id >= LOG_ID_MAX)) {
-        goto err;
-    }
-
-    logger_for_each(logger, logger_list) {
-        if (logger->id == id) {
-            goto ok;
-        }
-    }
-
-    logger = calloc(1, sizeof(*logger));
-    if (!logger) {
-        goto err;
-    }
-
-    if (check_allocate_accessible(&n, android_log_id_to_name(id),
-                                  logger_list->mode)) {
-        goto err_name;
-    }
-
-    logger->fd = open(n, logger_list->mode & (ANDROID_LOG_ACCMODE | ANDROID_LOG_NONBLOCK));
-    if (logger->fd < 0) {
-        goto err_name;
-    }
-
-    free(n);
-    logger->id = id;
-    list_init(&logger->log_list);
-    list_add_tail(&logger_list->node, &logger->node);
-    logger->top = logger_list;
-    logger_list->timeout_ms = LOG_TIMEOUT_FLUSH;
-    goto ok;
-
-err_name:
-    free(n);
-err_logger:
-    free(logger);
-err:
-    logger = NULL;
-ok:
-    return logger;
-}
-
-/* Open the single named log and make it part of a new logger list */
-struct logger_list *android_logger_list_open(log_id_t id,
-                                             int mode,
-                                             unsigned int tail,
-                                             pid_t pid)
-{
-    struct logger_list *logger_list = android_logger_list_alloc(mode, tail, pid);
-    if (!logger_list) {
-        return NULL;
-    }
-
-    if (!android_logger_open(logger_list, id)) {
-        android_logger_list_free(logger_list);
-        return NULL;
-    }
-
-    return logger_list;
-}
-
-/* prevent memory starvation when backfilling */
-static unsigned int queue_threshold(struct logger_list *logger_list)
-{
-    return (logger_list->tail < 64) ? 64 : logger_list->tail;
-}
-
-static bool low_queue(struct listnode *node)
-{
-    /* low is considered less than 2 */
-    return list_head(node) == list_tail(node);
-}
-
-/* Flush queues in sequential order, one at a time */
-static int android_logger_list_flush(struct logger_list *logger_list,
-                                     struct log_msg *log_msg)
-{
-    int ret = 0;
-    struct log_list *firstentry = NULL;
-
-    while ((ret == 0)
-            && (logger_list->flush
-                || (logger_list->queued_lines > logger_list->tail))) {
-        struct logger *logger;
-
-        /* Merge sort */
-        bool at_least_one_is_low = false;
-        struct logger *firstlogger = NULL;
-        firstentry = NULL;
-
-        logger_for_each(logger, logger_list) {
-            struct listnode *node;
-            struct log_list *oldest = NULL;
-
-            /* kernel logger channels not necessarily time-sort order */
-            list_for_each(node, &logger->log_list) {
-                struct log_list *entry = node_to_item(node,
-                                                      struct log_list, node);
-                if (!oldest
-                        || (entry->entry.entry.sec < oldest->entry.entry.sec)
-                        || ((entry->entry.entry.sec == oldest->entry.entry.sec)
-                            && (entry->entry.entry.nsec < oldest->entry.entry.nsec))) {
-                    oldest = entry;
-                }
-            }
-
-            if (!oldest) {
-                at_least_one_is_low = true;
-                continue;
-            } else if (low_queue(&logger->log_list)) {
-                at_least_one_is_low = true;
-            }
-
-            if (!firstentry
-                    || (oldest->entry.entry.sec < firstentry->entry.entry.sec)
-                    || ((oldest->entry.entry.sec == firstentry->entry.entry.sec)
-                        && (oldest->entry.entry.nsec < firstentry->entry.entry.nsec))) {
-                firstentry = oldest;
-                firstlogger = logger;
-            }
-        }
-
-        if (!firstentry) {
-            break;
-        }
-
-        /* when trimming list, tries to keep one entry behind in each bucket */
-        if (!logger_list->flush
-                && at_least_one_is_low
-                && (logger_list->queued_lines < queue_threshold(logger_list))) {
-            break;
-        }
-
-        /* within tail?, send! */
-        if ((logger_list->tail == 0)
-                || (logger_list->queued_lines <= logger_list->tail)) {
-            int diff;
-            ret = firstentry->entry.entry.hdr_size;
-            if (!ret) {
-                ret = sizeof(firstentry->entry.entry_v1);
-            }
-
-            /* Promote entry to v3 format */
-            memcpy(log_msg->buf, firstentry->entry.buf, ret);
-            diff = sizeof(firstentry->entry.entry_v3) - ret;
-            if (diff < 0) {
-                diff = 0;
-            } else if (diff > 0) {
-                memset(log_msg->buf + ret, 0, diff);
-            }
-            memcpy(log_msg->buf + ret + diff, firstentry->entry.buf + ret,
-                   firstentry->entry.entry.len + 1);
-            ret += diff;
-            log_msg->entry.hdr_size = ret;
-            log_msg->entry.lid = firstlogger->id;
-
-            ret += firstentry->entry.entry.len;
-        }
-
-        /* next entry */
-        list_remove(&firstentry->node);
-        free(firstentry);
-        if (logger_list->queued_lines) {
-            logger_list->queued_lines--;
-        }
-    }
-
-    /* Flushed the list, no longer in tail mode for continuing content */
-    if (logger_list->flush && !firstentry) {
-        logger_list->tail = 0;
-    }
-    return ret;
-}
-
-/* Read from the selected logs */
-int android_logger_list_read(struct logger_list *logger_list,
-                             struct log_msg *log_msg)
-{
-    struct logger *logger;
-    nfds_t nfds;
-    struct pollfd *p, *pollfds = NULL;
-    int error = 0, ret = 0;
-
-    memset(log_msg, 0, sizeof(struct log_msg));
-
-    if (!logger_list) {
-        return -ENODEV;
-    }
-
-    if (!(accessmode(logger_list->mode) & R_OK)) {
-        logger_list->error = EPERM;
-        goto done;
-    }
-
-    nfds = 0;
-    logger_for_each(logger, logger_list) {
-        ++nfds;
-    }
-    if (nfds <= 0) {
-        error = ENODEV;
-        goto done;
-    }
-
-    /* Do we have anything to offer from the buffer or state? */
-    if (logger_list->valid_entry) { /* implies we are also in a flush state */
-        goto flush;
-    }
-
-    ret = android_logger_list_flush(logger_list, log_msg);
-    if (ret) {
-        goto done;
-    }
-
-    if (logger_list->error) { /* implies we are also in a flush state */
-        goto done;
-    }
-
-    /* Lets start grinding on metal */
-    pollfds = calloc(nfds, sizeof(struct pollfd));
-    if (!pollfds) {
-        error = ENOMEM;
-        goto flush;
-    }
-
-    p = pollfds;
-    logger_for_each(logger, logger_list) {
-        p->fd = logger->fd;
-        p->events = POLLIN;
-        logger->revents = &p->revents;
-        ++p;
-    }
-
-    while (!ret && !error) {
-        int result;
-
-        /* If we oversleep it's ok, i.e. ignore EINTR. */
-        result = TEMP_FAILURE_RETRY(
-                    poll(pollfds, nfds, logger_list->timeout_ms));
-
-        if (result <= 0) {
-            if (result) {
-                error = errno;
-            } else if (logger_list->mode & ANDROID_LOG_NONBLOCK) {
-                error = EAGAIN;
-            } else {
-                logger_list->timeout_ms = LOG_TIMEOUT_NEVER;
-            }
-
-            logger_list->flush = true;
-            goto try_flush;
-        }
-
-        logger_list->timeout_ms = LOG_TIMEOUT_FLUSH;
-
-        /* Anti starvation */
-        if (!logger_list->flush
-                && (logger_list->queued_lines > (queue_threshold(logger_list) / 2))) {
-            /* Any queues with input pending that is low? */
-            bool starving = false;
-            logger_for_each(logger, logger_list) {
-                if ((*(logger->revents) & POLLIN)
-                        && low_queue(&logger->log_list)) {
-                    starving = true;
-                    break;
-                }
-            }
-
-            /* pushback on any queues that are not low */
-            if (starving) {
-                logger_for_each(logger, logger_list) {
-                    if ((*(logger->revents) & POLLIN)
-                            && !low_queue(&logger->log_list)) {
-                        *(logger->revents) &= ~POLLIN;
-                    }
-                }
-            }
-        }
-
-        logger_for_each(logger, logger_list) {
-            unsigned int hdr_size;
-            struct log_list *entry;
-            int diff;
-
-            if (!(*(logger->revents) & POLLIN)) {
-                continue;
-            }
-
-            memset(logger_list->entry.buf, 0, sizeof(struct log_msg));
-            /* NOTE: driver guarantees we read exactly one full entry */
-            result = read(logger->fd, logger_list->entry.buf,
-                          LOGGER_ENTRY_MAX_LEN);
-            if (result <= 0) {
-                if (!result) {
-                    error = EIO;
-                } else if (errno != EINTR) {
-                    error = errno;
-                }
-                continue;
-            }
-
-            if (logger_list->pid
-                    && (logger_list->pid != logger_list->entry.entry.pid)) {
-                continue;
-            }
-
-            hdr_size = logger_list->entry.entry.hdr_size;
-            if (!hdr_size) {
-                hdr_size = sizeof(logger_list->entry.entry_v1);
-            }
-
-            if ((hdr_size > sizeof(struct log_msg))
-                    || (logger_list->entry.entry.len
-                        > sizeof(logger_list->entry.buf) - hdr_size)
-                    || (logger_list->entry.entry.len != result - hdr_size)) {
-                error = EINVAL;
-                continue;
-            }
-
-            /* Promote entry to v3 format */
-            diff = sizeof(logger_list->entry.entry_v3) - hdr_size;
-            if (diff > 0) {
-                if (logger_list->entry.entry.len
-                        > sizeof(logger_list->entry.buf) - hdr_size - diff) {
-                    error = EINVAL;
-                    continue;
-                }
-                result += diff;
-                memmove(logger_list->entry.buf + hdr_size + diff,
-                        logger_list->entry.buf + hdr_size,
-                        logger_list->entry.entry.len + 1);
-                memset(logger_list->entry.buf + hdr_size, 0, diff);
-                logger_list->entry.entry.hdr_size = hdr_size + diff;
-            }
-            logger_list->entry.entry.lid = logger->id;
-
-            /* speedup: If not tail, and only one list, send directly */
-            if (!logger_list->tail
-                    && (list_head(&logger_list->node)
-                        == list_tail(&logger_list->node))) {
-                ret = result;
-                memcpy(log_msg->buf, logger_list->entry.buf, result + 1);
-                break;
-            }
-
-            entry = malloc(sizeof(*entry) - sizeof(entry->entry) + result + 1);
-
-            if (!entry) {
-                logger_list->valid_entry = true;
-                error = ENOMEM;
-                break;
-            }
-
-            logger_list->queued_lines++;
-
-            memcpy(entry->entry.buf, logger_list->entry.buf, result);
-            entry->entry.buf[result] = '\0';
-            list_add_tail(&logger->log_list, &entry->node);
-        }
-
-        if (ret <= 0) {
-try_flush:
-            ret = android_logger_list_flush(logger_list, log_msg);
-        }
-    }
-
-    free(pollfds);
-
-flush:
-    if (error) {
-        logger_list->flush = true;
-    }
-
-    if (ret <= 0) {
-        ret = android_logger_list_flush(logger_list, log_msg);
-
-        if (!ret && logger_list->valid_entry) {
-            ret = logger_list->entry.entry.hdr_size;
-            if (!ret) {
-                ret = sizeof(logger_list->entry.entry_v1);
-            }
-            ret += logger_list->entry.entry.len;
-
-            memcpy(log_msg->buf, logger_list->entry.buf,
-                   sizeof(struct log_msg));
-            logger_list->valid_entry = false;
-        }
-    }
-
-done:
-    if (logger_list->error) {
-        error = logger_list->error;
-    }
-    if (error) {
-        logger_list->error = error;
-        if (!ret) {
-            ret = -error;
-        }
-    }
-    return ret;
-}
-
-/* Close all the logs */
-void android_logger_list_free(struct logger_list *logger_list)
-{
-    if (logger_list == NULL) {
-        return;
-    }
-
-    while (!list_empty(&logger_list->node)) {
-        struct listnode *node = list_head(&logger_list->node);
-        struct logger *logger = node_to_item(node, struct logger, node);
-        android_logger_free(logger);
-    }
-
-    free(logger_list);
-}
diff --git a/liblog/logd_write_kern.c b/liblog/logd_write_kern.c
deleted file mode 100644
index 8742b34..0000000
--- a/liblog/logd_write_kern.c
+++ /dev/null
@@ -1,295 +0,0 @@
-/*
- * Copyright (C) 2007-2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <errno.h>
-#include <fcntl.h>
-#include <pthread.h>
-#include <stdarg.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <time.h>
-#include <unistd.h>
-
-#include <android/set_abort_message.h>
-
-#include <log/log.h>
-#include <log/logd.h>
-#include <log/logger.h>
-
-#define LOGGER_LOG_MAIN		"log/main"
-#define LOGGER_LOG_RADIO	"log/radio"
-#define LOGGER_LOG_EVENTS	"log/events"
-#define LOGGER_LOG_SYSTEM	"log/system"
-
-#define LOG_BUF_SIZE 1024
-
-#define log_open(pathname, flags) open(pathname, (flags) | O_CLOEXEC)
-#define log_writev(filedes, vector, count) writev(filedes, vector, count)
-#define log_close(filedes) close(filedes)
-
-static int __write_to_log_init(log_id_t, struct iovec *vec, size_t nr);
-static int (*write_to_log)(log_id_t, struct iovec *vec, size_t nr) = __write_to_log_init;
-
-static pthread_mutex_t log_init_lock = PTHREAD_MUTEX_INITIALIZER;
-
-#ifndef __unused
-#define __unused  __attribute__((__unused__))
-#endif
-
-static int log_fds[(int)LOG_ID_MAX] = { -1, -1, -1, -1 };
-
-/*
- * This is used by the C++ code to decide if it should write logs through
- * the C code.  Basically, if /dev/log/... is available, we're running in
- * the simulator rather than a desktop tool and want to use the device.
- */
-static enum {
-    kLogUninitialized, kLogNotAvailable, kLogAvailable
-} g_log_status = kLogUninitialized;
-int __android_log_dev_available(void)
-{
-    if (g_log_status == kLogUninitialized) {
-        if (access("/dev/"LOGGER_LOG_MAIN, W_OK) == 0)
-            g_log_status = kLogAvailable;
-        else
-            g_log_status = kLogNotAvailable;
-    }
-
-    return (g_log_status == kLogAvailable);
-}
-
-static int __write_to_log_null(log_id_t log_fd __unused, struct iovec *vec __unused,
-                               size_t nr __unused)
-{
-    return -1;
-}
-
-static int __write_to_log_kernel(log_id_t log_id, struct iovec *vec, size_t nr)
-{
-    ssize_t ret;
-    int log_fd;
-
-    if (/*(int)log_id >= 0 &&*/ (int)log_id < (int)LOG_ID_MAX) {
-        if (log_id == LOG_ID_CRASH) {
-            log_id = LOG_ID_MAIN;
-        }
-        log_fd = log_fds[(int)log_id];
-    } else {
-        return -EBADF;
-    }
-
-    do {
-        ret = log_writev(log_fd, vec, nr);
-        if (ret < 0) {
-            ret = -errno;
-        }
-    } while (ret == -EINTR);
-
-    return ret;
-}
-
-static int __write_to_log_init(log_id_t log_id, struct iovec *vec, size_t nr)
-{
-    pthread_mutex_lock(&log_init_lock);
-
-    if (write_to_log == __write_to_log_init) {
-        log_fds[LOG_ID_MAIN] = log_open("/dev/"LOGGER_LOG_MAIN, O_WRONLY);
-        log_fds[LOG_ID_RADIO] = log_open("/dev/"LOGGER_LOG_RADIO, O_WRONLY);
-        log_fds[LOG_ID_EVENTS] = log_open("/dev/"LOGGER_LOG_EVENTS, O_WRONLY);
-        log_fds[LOG_ID_SYSTEM] = log_open("/dev/"LOGGER_LOG_SYSTEM, O_WRONLY);
-
-        write_to_log = __write_to_log_kernel;
-
-        if (log_fds[LOG_ID_MAIN] < 0 || log_fds[LOG_ID_RADIO] < 0 ||
-                log_fds[LOG_ID_EVENTS] < 0) {
-            log_close(log_fds[LOG_ID_MAIN]);
-            log_close(log_fds[LOG_ID_RADIO]);
-            log_close(log_fds[LOG_ID_EVENTS]);
-            log_fds[LOG_ID_MAIN] = -1;
-            log_fds[LOG_ID_RADIO] = -1;
-            log_fds[LOG_ID_EVENTS] = -1;
-            write_to_log = __write_to_log_null;
-        }
-
-        if (log_fds[LOG_ID_SYSTEM] < 0) {
-            log_fds[LOG_ID_SYSTEM] = log_fds[LOG_ID_MAIN];
-        }
-    }
-
-    pthread_mutex_unlock(&log_init_lock);
-
-    return write_to_log(log_id, vec, nr);
-}
-
-int __android_log_write(int prio, const char *tag, const char *msg)
-{
-    return __android_log_buf_write(LOG_ID_MAIN, prio, tag, msg);
-}
-
-int __android_log_buf_write(int bufID, int prio, const char *tag, const char *msg)
-{
-    struct iovec vec[3];
-    char tmp_tag[32];
-
-    if (!tag)
-        tag = "";
-
-    /* XXX: This needs to go! */
-    if ((bufID != LOG_ID_RADIO) &&
-         (!strcmp(tag, "HTC_RIL") ||
-        !strncmp(tag, "RIL", 3) || /* Any log tag with "RIL" as the prefix */
-        !strncmp(tag, "IMS", 3) || /* Any log tag with "IMS" as the prefix */
-        !strcmp(tag, "AT") ||
-        !strcmp(tag, "GSM") ||
-        !strcmp(tag, "STK") ||
-        !strcmp(tag, "CDMA") ||
-        !strcmp(tag, "PHONE") ||
-        !strcmp(tag, "SMS"))) {
-            bufID = LOG_ID_RADIO;
-            /* Inform third party apps/ril/radio.. to use Rlog or RLOG */
-            snprintf(tmp_tag, sizeof(tmp_tag), "use-Rlog/RLOG-%s", tag);
-            tag = tmp_tag;
-    }
-
-    if (prio == ANDROID_LOG_FATAL) {
-        android_set_abort_message(msg);
-    }
-
-    vec[0].iov_base   = (unsigned char *) &prio;
-    vec[0].iov_len    = 1;
-    vec[1].iov_base   = (void *) tag;
-    vec[1].iov_len    = strlen(tag) + 1;
-    vec[2].iov_base   = (void *) msg;
-    vec[2].iov_len    = strlen(msg) + 1;
-
-    return write_to_log(bufID, vec, 3);
-}
-
-int __android_log_vprint(int prio, const char *tag, const char *fmt, va_list ap)
-{
-    char buf[LOG_BUF_SIZE];
-
-    vsnprintf(buf, LOG_BUF_SIZE, fmt, ap);
-
-    return __android_log_write(prio, tag, buf);
-}
-
-int __android_log_print(int prio, const char *tag, const char *fmt, ...)
-{
-    va_list ap;
-    char buf[LOG_BUF_SIZE];
-
-    va_start(ap, fmt);
-    vsnprintf(buf, LOG_BUF_SIZE, fmt, ap);
-    va_end(ap);
-
-    return __android_log_write(prio, tag, buf);
-}
-
-int __android_log_buf_print(int bufID, int prio, const char *tag, const char *fmt, ...)
-{
-    va_list ap;
-    char buf[LOG_BUF_SIZE];
-
-    va_start(ap, fmt);
-    vsnprintf(buf, LOG_BUF_SIZE, fmt, ap);
-    va_end(ap);
-
-    return __android_log_buf_write(bufID, prio, tag, buf);
-}
-
-void __android_log_assert(const char *cond, const char *tag,
-                          const char *fmt, ...)
-{
-    char buf[LOG_BUF_SIZE];
-
-    if (fmt) {
-        va_list ap;
-        va_start(ap, fmt);
-        vsnprintf(buf, LOG_BUF_SIZE, fmt, ap);
-        va_end(ap);
-    } else {
-        /* Msg not provided, log condition.  N.B. Do not use cond directly as
-         * format string as it could contain spurious '%' syntax (e.g.
-         * "%d" in "blocks%devs == 0").
-         */
-        if (cond)
-            snprintf(buf, LOG_BUF_SIZE, "Assertion failed: %s", cond);
-        else
-            strcpy(buf, "Unspecified assertion failed");
-    }
-
-    __android_log_write(ANDROID_LOG_FATAL, tag, buf);
-    abort(); /* abort so we have a chance to debug the situation */
-    /* NOTREACHED */
-}
-
-int __android_log_bwrite(int32_t tag, const void *payload, size_t len)
-{
-    struct iovec vec[2];
-
-    vec[0].iov_base = &tag;
-    vec[0].iov_len = sizeof(tag);
-    vec[1].iov_base = (void*)payload;
-    vec[1].iov_len = len;
-
-    return write_to_log(LOG_ID_EVENTS, vec, 2);
-}
-
-/*
- * Like __android_log_bwrite, but takes the type as well.  Doesn't work
- * for the general case where we're generating lists of stuff, but very
- * handy if we just want to dump an integer into the log.
- */
-int __android_log_btwrite(int32_t tag, char type, const void *payload,
-                          size_t len)
-{
-    struct iovec vec[3];
-
-    vec[0].iov_base = &tag;
-    vec[0].iov_len = sizeof(tag);
-    vec[1].iov_base = &type;
-    vec[1].iov_len = sizeof(type);
-    vec[2].iov_base = (void*)payload;
-    vec[2].iov_len = len;
-
-    return write_to_log(LOG_ID_EVENTS, vec, 3);
-}
-
-/*
- * Like __android_log_bwrite, but used for writing strings to the
- * event log.
- */
-int __android_log_bswrite(int32_t tag, const char *payload)
-{
-    struct iovec vec[4];
-    char type = EVENT_TYPE_STRING;
-    uint32_t len = strlen(payload);
-
-    vec[0].iov_base = &tag;
-    vec[0].iov_len = sizeof(tag);
-    vec[1].iov_base = &type;
-    vec[1].iov_len = sizeof(type);
-    vec[2].iov_base = &len;
-    vec[2].iov_len = sizeof(len);
-    vec[3].iov_base = (void*)payload;
-    vec[3].iov_len = len;
-
-    return write_to_log(LOG_ID_EVENTS, vec, 4);
-}
diff --git a/liblog/tests/Android.mk b/liblog/tests/Android.mk
index a407c50..8229859 100644
--- a/liblog/tests/Android.mk
+++ b/liblog/tests/Android.mk
@@ -65,10 +65,6 @@
 test_src_files += \
     libc_test.cpp
 
-ifneq ($(TARGET_USES_LOGD),false)
-test_c_flags += -DTARGET_USES_LOGD
-endif
-
 endif
 
 # Build tests for the device (with .so). Run with:
diff --git a/liblog/tests/libc_test.cpp b/liblog/tests/libc_test.cpp
index 0e84f4e..9dd6f03 100644
--- a/liblog/tests/libc_test.cpp
+++ b/liblog/tests/libc_test.cpp
@@ -25,9 +25,7 @@
 #define _ANDROID_LOG_H // Priorities redefined
 #define _LIBS_LOG_LOG_H // log ids redefined
 typedef unsigned char log_id_t; // log_id_t missing as a result
-#ifdef TARGET_USES_LOGD
 #define _LIBS_LOG_LOG_READ_H // log_time redefined
-#endif
 
 #include <log/log.h>
 #include <log/logger.h>
diff --git a/libnativebridge/native_bridge.cc b/libnativebridge/native_bridge.cc
index a9671a9..32a65ea 100644
--- a/libnativebridge/native_bridge.cc
+++ b/libnativebridge/native_bridge.cc
@@ -295,13 +295,13 @@
   // so we save the extra file existence check.
   char cpuinfo_path[1024];
 
-#ifdef HAVE_ANDROID_OS
+#if defined(__ANDROID__)
   snprintf(cpuinfo_path, sizeof(cpuinfo_path), "/system/lib"
 #ifdef __LP64__
       "64"
 #endif  // __LP64__
       "/%s/cpuinfo", instruction_set);
-#else   // !HAVE_ANDROID_OS
+#else   // !__ANDROID__
   // To be able to test on the host, we hardwire a relative path.
   snprintf(cpuinfo_path, sizeof(cpuinfo_path), "./cpuinfo");
 #endif
diff --git a/libnativebridge/tests/PreInitializeNativeBridge_test.cpp b/libnativebridge/tests/PreInitializeNativeBridge_test.cpp
index cec26ce..d3bbebe 100644
--- a/libnativebridge/tests/PreInitializeNativeBridge_test.cpp
+++ b/libnativebridge/tests/PreInitializeNativeBridge_test.cpp
@@ -32,8 +32,8 @@
 
 TEST_F(NativeBridgeTest, PreInitializeNativeBridge) {
     ASSERT_TRUE(LoadNativeBridge(kNativeBridgeLibrary, nullptr));
-#ifndef __APPLE__         // Mac OS does not support bind-mount.
-#ifndef HAVE_ANDROID_OS   // Cannot write into the hard-wired location.
+#if !defined(__APPLE__)         // Mac OS does not support bind-mount.
+#if !defined(__ANDROID__)       // Cannot write into the hard-wired location.
     // Try to create our mount namespace.
     if (unshare(CLONE_NEWNS) != -1) {
         // Create a dummy file.
diff --git a/libnetutils/ifc_utils.c b/libnetutils/ifc_utils.c
index 7d2a5fb..956ed30 100644
--- a/libnetutils/ifc_utils.c
+++ b/libnetutils/ifc_utils.c
@@ -50,7 +50,7 @@
 #define ALOGW printf
 #endif
 
-#ifdef HAVE_ANDROID_OS
+#if defined(__ANDROID__)
 /* SIOCKILLADDR is an Android extension. */
 #define SIOCKILLADDR 0x8939
 #endif
@@ -596,7 +596,7 @@
 
 int ifc_reset_connections(const char *ifname, const int reset_mask)
 {
-#ifdef HAVE_ANDROID_OS
+#if defined(__ANDROID__)
     int result, success;
     in_addr_t myaddr = 0;
     struct ifreq ifr;
diff --git a/libutils/String8.cpp b/libutils/String8.cpp
index 3323b82..28be60f 100644
--- a/libutils/String8.cpp
+++ b/libutils/String8.cpp
@@ -16,6 +16,7 @@
 
 #include <utils/String8.h>
 
+#include <utils/Compat.h>
 #include <utils/Log.h>
 #include <utils/Unicode.h>
 #include <utils/SharedBuffer.h>
diff --git a/libutils/SystemClock.cpp b/libutils/SystemClock.cpp
index 64204a8..1fca2b2 100644
--- a/libutils/SystemClock.cpp
+++ b/libutils/SystemClock.cpp
@@ -19,7 +19,7 @@
  * System clock functions.
  */
 
-#ifdef HAVE_ANDROID_OS
+#if defined(__ANDROID__)
 #include <linux/ioctl.h>
 #include <linux/rtc.h>
 #include <utils/Atomic.h>
@@ -107,7 +107,7 @@
  */
 int64_t elapsedRealtimeNano()
 {
-#ifdef HAVE_ANDROID_OS
+#if defined(__ANDROID__)
     struct timespec ts;
     int result;
     int64_t timestamp;
diff --git a/libutils/Threads.cpp b/libutils/Threads.cpp
index c3666e4..6dda6b5 100644
--- a/libutils/Threads.cpp
+++ b/libutils/Threads.cpp
@@ -45,7 +45,7 @@
 
 #include <cutils/sched_policy.h>
 
-#ifdef HAVE_ANDROID_OS
+#if defined(__ANDROID__)
 # define __android_unused
 #else
 # define __android_unused __attribute__((__unused__))
@@ -132,7 +132,7 @@
     pthread_attr_init(&attr);
     pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
 
-#ifdef HAVE_ANDROID_OS  /* valgrind is rejecting RT-priority create reqs */
+#if defined(__ANDROID__)  /* valgrind is rejecting RT-priority create reqs */
     if (threadPriority != PRIORITY_DEFAULT || threadName != NULL) {
         // Now that the pthread_t has a method to find the associated
         // android_thread_id_t (pid) from pthread_t, it would be possible to avoid
@@ -176,7 +176,7 @@
     return 1;
 }
 
-#ifdef HAVE_ANDROID_OS
+#if defined(__ANDROID__)
 static pthread_t android_thread_id_t_to_pthread(android_thread_id_t thread)
 {
     return (pthread_t) thread;
@@ -302,12 +302,10 @@
     gCreateThreadFn = func;
 }
 
-#ifdef HAVE_ANDROID_OS
+#if defined(__ANDROID__)
 int androidSetThreadPriority(pid_t tid, int pri)
 {
     int rc = 0;
-
-#if !defined(_WIN32)
     int lasterr = 0;
 
     if (pri >= ANDROID_PRIORITY_BACKGROUND) {
@@ -325,17 +323,12 @@
     } else {
         errno = lasterr;
     }
-#endif
 
     return rc;
 }
 
 int androidGetThreadPriority(pid_t tid) {
-#if !defined(_WIN32)
     return getpriority(PRIO_PROCESS, tid);
-#else
-    return ANDROID_PRIORITY_NORMAL;
-#endif
 }
 
 #endif
@@ -658,7 +651,7 @@
         mLock("Thread::mLock"),
         mStatus(NO_ERROR),
         mExitPending(false), mRunning(false)
-#ifdef HAVE_ANDROID_OS
+#if defined(__ANDROID__)
         , mTid(-1)
 #endif
 {
@@ -728,7 +721,7 @@
     wp<Thread> weak(strong);
     self->mHoldSelf.clear();
 
-#ifdef HAVE_ANDROID_OS
+#if defined(__ANDROID__)
     // this is very useful for debugging with gdb
     self->mTid = gettid();
 #endif
@@ -839,7 +832,7 @@
     return mRunning;
 }
 
-#ifdef HAVE_ANDROID_OS
+#if defined(__ANDROID__)
 pid_t Thread::getTid() const
 {
     // mTid is not defined until the child initializes it, and the caller may need it earlier
diff --git a/libutils/Timers.cpp b/libutils/Timers.cpp
index fb70e15..201bc41 100644
--- a/libutils/Timers.cpp
+++ b/libutils/Timers.cpp
@@ -23,7 +23,7 @@
 #include <sys/time.h>
 #include <time.h>
 
-#if defined(HAVE_ANDROID_OS)
+#if defined(__ANDROID__)
 nsecs_t systemTime(int clock)
 {
     static const clockid_t clocks[] = {
diff --git a/libutils/Unicode.cpp b/libutils/Unicode.cpp
index fb876c9..6f4b721 100644
--- a/libutils/Unicode.cpp
+++ b/libutils/Unicode.cpp
@@ -18,7 +18,7 @@
 
 #include <stddef.h>
 
-#ifdef HAVE_WINSOCK
+#if defined(_WIN32)
 # undef  nhtol
 # undef  htonl
 # undef  nhtos
diff --git a/logd/CommandListener.cpp b/logd/CommandListener.cpp
index 5489cc9..489bea6 100644
--- a/logd/CommandListener.cpp
+++ b/logd/CommandListener.cpp
@@ -34,8 +34,7 @@
 
 CommandListener::CommandListener(LogBuffer *buf, LogReader * /*reader*/,
                                  LogListener * /*swl*/) :
-        FrameworkListener(getLogSocket()),
-        mBuf(*buf) {
+        FrameworkListener(getLogSocket()) {
     // registerCmd(new ShutdownCmd(buf, writer, swl));
     registerCmd(new ClearCmd(buf));
     registerCmd(new GetBufSizeCmd(buf));
@@ -47,10 +46,9 @@
     registerCmd(new ReinitCmd());
 }
 
-CommandListener::ShutdownCmd::ShutdownCmd(LogBuffer *buf, LogReader *reader,
+CommandListener::ShutdownCmd::ShutdownCmd(LogReader *reader,
                                           LogListener *swl) :
         LogCommand("shutdown"),
-        mBuf(*buf),
         mReader(*reader),
         mSwl(*swl) {
 }
diff --git a/logd/CommandListener.h b/logd/CommandListener.h
index 83e06b4..3877675 100644
--- a/logd/CommandListener.h
+++ b/logd/CommandListener.h
@@ -27,7 +27,6 @@
 void reinit_signal_handler(int /*signal*/);
 
 class CommandListener : public FrameworkListener {
-    LogBuffer &mBuf;
 
 public:
     CommandListener(LogBuffer *buf, LogReader *reader, LogListener *swl);
@@ -37,12 +36,11 @@
     static int getLogSocket();
 
     class ShutdownCmd : public LogCommand {
-        LogBuffer &mBuf;
         LogReader &mReader;
         LogListener &mSwl;
 
     public:
-        ShutdownCmd(LogBuffer *buf, LogReader *reader, LogListener *swl);
+        ShutdownCmd(LogReader *reader, LogListener *swl);
         virtual ~ShutdownCmd() {}
         int runCommand(SocketClient *c, int argc, char ** argv);
     };
diff --git a/logd/LogBuffer.cpp b/logd/LogBuffer.cpp
index 0f5071b..b9e8973 100644
--- a/logd/LogBuffer.cpp
+++ b/logd/LogBuffer.cpp
@@ -218,18 +218,25 @@
 }
 
 // If we're using more than 256K of memory for log entries, prune
-// at least 10% of the log entries.
+// at least 10% of the log entries. For sizes above 1M, prune at
+// least 1% of the log entries.
 //
 // mLogElementsLock must be held when this function is called.
 void LogBuffer::maybePrune(log_id_t id) {
     size_t sizes = stats.sizes(id);
-    if (sizes > log_buffer_size(id)) {
-        size_t sizeOver90Percent = sizes - ((log_buffer_size(id) * 9) / 10);
-        size_t elements = stats.elements(id);
-        unsigned long pruneRows = elements * sizeOver90Percent / sizes;
-        elements /= 10;
-        if (pruneRows <= elements) {
-            pruneRows = elements;
+    unsigned long maxSize = log_buffer_size(id);
+    if (sizes > maxSize) {
+        size_t sizeOver, minElements, elements = stats.elements(id);
+        if (maxSize > (4 * LOG_BUFFER_SIZE)) {
+            sizeOver = sizes - ((maxSize * 99) / 100);
+            minElements = elements / 100;
+        } else {
+            sizeOver = sizes - ((maxSize * 9) / 10);
+            minElements = elements / 10;
+        }
+        unsigned long pruneRows = elements * sizeOver / sizes;
+        if (pruneRows <= minElements) {
+            pruneRows = minElements;
         }
         prune(id, pruneRows);
     }
diff --git a/logd/LogKlog.cpp b/logd/LogKlog.cpp
index d578c04..1e6f55f 100644
--- a/logd/LogKlog.cpp
+++ b/logd/LogKlog.cpp
@@ -43,8 +43,10 @@
     if (!isdigit(*s++)) {
         return NULL;
     }
+    static const size_t max_prio_len = 4;
+    size_t len = 0;
     char c;
-    while ((c = *s++)) {
+    while (((c = *s++)) && (++len <= max_prio_len)) {
         if (!isdigit(c)) {
             return (c == '>') ? s : NULL;
         }
@@ -73,7 +75,7 @@
 }
 
 // Like strtok_r with "\r\n" except that we look for log signatures (regex)
-// \(\(<[0-9]+>\)\([[] *[0-9]+[.][0-9]+[]] \)\{0,1\}\|[[] *[0-9]+[.][0-9]+[]] \)
+//  \(\(<[0-9]\{1,4\}>\)\([[] *[0-9]+[.][0-9]+[]] \)\{0,1\}\|[[] *[0-9]+[.][0-9]+[]] \)
 // and split if we see a second one without a newline.
 
 #define SIGNATURE_MASK     0xF0
@@ -165,7 +167,7 @@
             break;
         }
     }
-    /* NOTREACHED */
+    // NOTREACHED
 }
 
 log_time LogKlog::correction = log_time(CLOCK_REALTIME) - log_time(CLOCK_MONOTONIC);
@@ -175,8 +177,6 @@
         logbuf(buf),
         reader(reader),
         signature(CLOCK_MONOTONIC),
-        fdWrite(fdWrite),
-        fdRead(fdRead),
         initialized(false),
         enableLogging(true),
         auditd(auditd) {
@@ -254,6 +254,7 @@
     if ((cp = now.strptime(*buf, "[ %s.%q]"))) {
         static const char suspend[] = "PM: suspend entry ";
         static const char resume[] = "PM: suspend exit ";
+        static const char healthd[] = "healthd: battery ";
         static const char suspended[] = "Suspended for ";
 
         if (isspace(*cp)) {
@@ -263,6 +264,15 @@
             calculateCorrection(now, cp + sizeof(suspend) - 1);
         } else if (!strncmp(cp, resume, sizeof(resume) - 1)) {
             calculateCorrection(now, cp + sizeof(resume) - 1);
+        } else if (!strncmp(cp, healthd, sizeof(healthd) - 1)) {
+            // look for " 2???-??-?? ??:??:??.????????? ???"
+            const char *tp;
+            for (tp = cp + sizeof(healthd) - 1; *tp && (*tp != '\n'); ++tp) {
+                if ((tp[0] == ' ') && (tp[1] == '2') && (tp[5] == '-')) {
+                    calculateCorrection(now, tp + 1);
+                    break;
+                }
+            }
         } else if (!strncmp(cp, suspended, sizeof(suspended) - 1)) {
             log_time real;
             char *endp;
@@ -465,7 +475,7 @@
             if (strncmp(bt, cp, size)) {
                 // <PRI>[<TIME>] <tag>_host '<tag>.<num>' : message
                 if (!strncmp(bt + size - 5, "_host", 5)
-                 && !strncmp(bt, cp, size - 5)) {
+                        && !strncmp(bt, cp, size - 5)) {
                     const char *b = cp;
                     cp += size - 5;
                     if (*cp == '.') {
@@ -490,7 +500,6 @@
                     }
                 }
             } else if (isspace(cp[size])) {
-                const char *b = cp;
                 cp += size;
                 while (isspace(*++cp));
                 // <PRI>[<TIME>] <tag> <tag> : message
@@ -535,11 +544,15 @@
         }
         size = etag - tag;
         if ((size <= 1)
-         || ((size == 2) && (isdigit(tag[0]) || isdigit(tag[1])))
-         || ((size == 3) && !strncmp(tag, "CPU", 3))
-         || ((size == 7) && !strncmp(tag, "WARNING", 7))
-         || ((size == 5) && !strncmp(tag, "ERROR", 5))
-         || ((size == 4) && !strncmp(tag, "INFO", 4))) {
+            // register names like x9
+                || ((size == 2) && (isdigit(tag[0]) || isdigit(tag[1])))
+            // register names like x18 but not driver names like en0
+                || ((size == 3) && (isdigit(tag[1]) && isdigit(tag[2])))
+            // blacklist
+                || ((size == 3) && !strncmp(tag, "CPU", 3))
+                || ((size == 7) && !strncmp(tag, "WARNING", 7))
+                || ((size == 5) && !strncmp(tag, "ERROR", 5))
+                || ((size == 4) && !strncmp(tag, "INFO", 4))) {
             buf = start;
             etag = tag = "";
         }
diff --git a/logd/LogKlog.h b/logd/LogKlog.h
index a898c63..24b2685 100644
--- a/logd/LogKlog.h
+++ b/logd/LogKlog.h
@@ -27,8 +27,6 @@
     LogBuffer *logbuf;
     LogReader *reader;
     const log_time signature;
-    const int fdWrite; // /dev/kmsg
-    const int fdRead;  // /proc/kmsg
     // Set once thread is started, separates KLOG_ACTION_READ_ALL
     // and KLOG_ACTION_READ phases.
     bool initialized;
diff --git a/logd/tests/Android.mk b/logd/tests/Android.mk
index 85ca4ac..a7c6b53 100644
--- a/logd/tests/Android.mk
+++ b/logd/tests/Android.mk
@@ -34,10 +34,6 @@
     -Werror \
     -fno-builtin \
 
-ifneq ($(TARGET_USES_LOGD),false)
-test_c_flags += -DTARGET_USES_LOGD=1
-endif
-
 test_src_files := \
     logd_test.cpp
 
diff --git a/logd/tests/logd_test.cpp b/logd/tests/logd_test.cpp
index 3266360..44fa95c 100644
--- a/logd/tests/logd_test.cpp
+++ b/logd/tests/logd_test.cpp
@@ -137,13 +137,7 @@
 
     alloc_statistics(&buf, &len);
 
-#ifdef TARGET_USES_LOGD
     ASSERT_TRUE(NULL != buf);
-#else
-    if (!buf) {
-        return;
-    }
-#endif
 
     // remove trailing FF
     char *cp = buf + len - 1;
@@ -167,7 +161,6 @@
 
     EXPECT_EQ(0, truncated);
 
-#ifdef TARGET_USES_LOGD
     char *main_logs = strstr(cp, "\nChattiest UIDs in main ");
     EXPECT_TRUE(NULL != main_logs);
 
@@ -179,7 +172,6 @@
 
     char *events_logs = strstr(cp, "\nChattiest UIDs in events ");
     EXPECT_TRUE(NULL != events_logs);
-#endif
 
     delete [] buf;
 }
@@ -419,37 +411,17 @@
         return;
     }
 
-#ifdef TARGET_USES_LOGD
     EXPECT_GE(200000UL, ns[log_maximum_retry]); // 104734 user
-#else
-    EXPECT_GE(10000UL, ns[log_maximum_retry]); // 5636 kernel
-#endif
 
-#ifdef TARGET_USES_LOGD
     EXPECT_GE(90000UL, ns[log_maximum]); // 46913 user
-#else
-    EXPECT_GE(10000UL, ns[log_maximum]); // 5637 kernel
-#endif
 
     EXPECT_GE(4096UL, ns[clock_overhead]); // 4095
 
-#ifdef TARGET_USES_LOGD
     EXPECT_GE(250000UL, ns[log_overhead]); // 126886 user
-#else
-    EXPECT_GE(100000UL, ns[log_overhead]); // 50945 kernel
-#endif
 
-#ifdef TARGET_USES_LOGD
     EXPECT_GE(10000UL, ns[log_latency]); // 5669 user space
-#else
-    EXPECT_GE(500000UL, ns[log_latency]); // 254200 kernel
-#endif
 
-#ifdef TARGET_USES_LOGD
     EXPECT_GE(20000000UL, ns[log_delay]); // 10500289 user
-#else
-    EXPECT_GE(55000UL, ns[log_delay]); // 27341 kernel
-#endif
 
     for (unsigned i = 0; i < sizeof(ns) / sizeof(ns[0]); ++i) {
         EXPECT_NE(0UL, ns[i]);
@@ -457,14 +429,8 @@
 
     alloc_statistics(&buf, &len);
 
-#ifdef TARGET_USES_LOGD
     bool collected_statistics = !!buf;
     EXPECT_EQ(true, collected_statistics);
-#else
-    if (!buf) {
-        return;
-    }
-#endif
 
     ASSERT_TRUE(NULL != buf);
 
diff --git a/logwrapper/logwrap.c b/logwrapper/logwrap.c
index 3a6276e..777dafe 100644
--- a/logwrapper/logwrap.c
+++ b/logwrapper/logwrap.c
@@ -355,7 +355,8 @@
         }
 
         if (poll_fds[0].revents & POLLIN) {
-            sz = read(parent_read, &buffer[b], sizeof(buffer) - 1 - b);
+            sz = TEMP_FAILURE_RETRY(
+                read(parent_read, &buffer[b], sizeof(buffer) - 1 - b));
 
             sz += b;
             // Log one line at a time
@@ -490,7 +491,7 @@
     }
 
     /* Use ptty instead of socketpair so that STDOUT is not buffered */
-    parent_ptty = open("/dev/ptmx", O_RDWR);
+    parent_ptty = TEMP_FAILURE_RETRY(open("/dev/ptmx", O_RDWR));
     if (parent_ptty < 0) {
         ERROR("Cannot create parent ptty\n");
         rc = -1;
@@ -505,7 +506,7 @@
         goto err_ptty;
     }
 
-    child_ptty = open(child_devname, O_RDWR);
+    child_ptty = TEMP_FAILURE_RETRY(open(child_devname, O_RDWR));
     if (child_ptty < 0) {
         ERROR("Cannot open child_ptty\n");
         rc = -1;
diff --git a/metricsd/Android.mk b/metricsd/Android.mk
new file mode 100644
index 0000000..9edba6e
--- /dev/null
+++ b/metricsd/Android.mk
@@ -0,0 +1,116 @@
+# 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.
+
+LOCAL_PATH := $(call my-dir)
+
+ifeq ($(HOST_OS),linux)
+
+metrics_cpp_extension := .cc
+libmetrics_sources := \
+  c_metrics_library.cc \
+  metrics_library.cc \
+  serialization/metric_sample.cc \
+  serialization/serialization_utils.cc
+
+metrics_client_sources := \
+  metrics_client.cc
+
+metrics_daemon_sources := \
+  metrics_daemon.cc \
+  metrics_daemon_main.cc \
+  persistent_integer.cc \
+  uploader/metrics_hashes.cc \
+  uploader/metrics_log_base.cc \
+  uploader/metrics_log.cc \
+  uploader/sender_http.cc \
+  uploader/system_profile_cache.cc \
+  uploader/upload_service.cc \
+  serialization/metric_sample.cc \
+  serialization/serialization_utils.cc
+
+metrics_CFLAGS := -Wall \
+  -D__BRILLO__ \
+  -Wno-char-subscripts \
+  -Wno-missing-field-initializers \
+  -Wno-unused-function \
+  -Wno-unused-parameter \
+  -Werror \
+  -fvisibility=default
+metrics_CPPFLAGS := -Wno-non-virtual-dtor \
+  -Wno-sign-promo \
+  -Wno-strict-aliasing \
+  -fvisibility=default
+metrics_includes := external/gtest/include \
+  $(LOCAL_PATH)/include
+metrics_shared_libraries := libchrome libchromeos
+
+# Shared library for metrics.
+# ========================================================
+include $(CLEAR_VARS)
+LOCAL_MODULE := libmetrics
+LOCAL_C_INCLUDES := $(metrics_includes)
+LOCAL_CFLAGS := $(metrics_CFLAGS)
+LOCAL_CPP_EXTENSION := $(metrics_cpp_extension)
+LOCAL_CPPFLAGS := $(metrics_CPPFLAGS)
+LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)/include
+LOCAL_SHARED_LIBRARIES := $(metrics_shared_libraries)
+LOCAL_SRC_FILES := $(libmetrics_sources)
+include $(BUILD_SHARED_LIBRARY)
+
+# CLI client for metrics.
+# ========================================================
+include $(CLEAR_VARS)
+LOCAL_MODULE := metrics_client
+LOCAL_C_INCLUDES := $(metrics_includes)
+LOCAL_CFLAGS := $(metrics_CFLAGS)
+LOCAL_CPP_EXTENSION := $(metrics_cpp_extension)
+LOCAL_CPPFLAGS := $(metrics_CPPFLAGS)
+LOCAL_SHARED_LIBRARIES := $(metrics_shared_libraries) \
+  libmetrics
+LOCAL_SRC_FILES := $(metrics_client_sources)
+include $(BUILD_EXECUTABLE)
+
+# Protobuf library for metrics_daemon.
+# ========================================================
+include $(CLEAR_VARS)
+LOCAL_MODULE := metrics_daemon_protos
+LOCAL_MODULE_CLASS := STATIC_LIBRARIES
+generated_sources_dir := $(call local-generated-sources-dir)
+LOCAL_EXPORT_C_INCLUDE_DIRS += \
+    $(generated_sources_dir)/proto/system/core/metricsd
+LOCAL_SRC_FILES :=  $(call all-proto-files-under,uploader/proto)
+LOCAL_STATIC_LIBRARIES := libprotobuf-cpp-lite
+include $(BUILD_STATIC_LIBRARY)
+
+# metrics daemon.
+# ========================================================
+include $(CLEAR_VARS)
+LOCAL_MODULE := metrics_daemon
+LOCAL_C_INCLUDES := $(metrics_includes) \
+  external/libchromeos
+LOCAL_CFLAGS := $(metrics_CFLAGS)
+LOCAL_CPP_EXTENSION := $(metrics_cpp_extension)
+LOCAL_CPPFLAGS := $(metrics_CPPFLAGS)
+LOCAL_RTTI_FLAG := -frtti
+LOCAL_SHARED_LIBRARIES := $(metrics_shared_libraries) \
+  libmetrics \
+  libprotobuf-cpp-lite \
+  libchromeos-http \
+  libchromeos-dbus \
+  libdbus
+LOCAL_SRC_FILES := $(metrics_daemon_sources)
+LOCAL_STATIC_LIBRARIES := metrics_daemon_protos
+include $(BUILD_EXECUTABLE)
+
+endif # HOST_OS == linux
diff --git a/metricsd/OWNERS b/metricsd/OWNERS
new file mode 100644
index 0000000..7f5e50d
--- /dev/null
+++ b/metricsd/OWNERS
@@ -0,0 +1,3 @@
+semenzato@chromium.org
+derat@chromium.org
+bsimonnet@chromium.org
diff --git a/metricsd/README b/metricsd/README
new file mode 100644
index 0000000..d4c9a0e
--- /dev/null
+++ b/metricsd/README
@@ -0,0 +1,150 @@
+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.
+
+================================================================================
+
+The Chrome OS "metrics" package contains utilities for client-side user metric
+collection.
+When Chrome is installed, Chrome will take care of aggregating and uploading the
+metrics to the UMA server.
+When Chrome is not installed (embedded build) and the metrics_uploader USE flag
+is set, metrics_daemon will aggregate and upload the metrics itself.
+
+
+================================================================================
+The Metrics Library: libmetrics
+================================================================================
+
+libmetrics is a small library that implements the basic C and C++ API for
+metrics collection. All metrics collection is funneled through this library. The
+easiest and recommended way for a client-side module to collect user metrics is
+to link libmetrics and use its APIs to send metrics to Chrome for transport to
+UMA. In order to use the library in a module, you need to do the following:
+
+- Add a dependence (DEPEND and RDEPEND) on chromeos-base/metrics to the module's
+  ebuild.
+
+- Link the module with libmetrics (for example, by passing -lmetrics to the
+  module's link command). Both libmetrics.so and libmetrics.a are built and
+  installed under $SYSROOT/usr/lib/. Note that by default -lmetrics will link
+  against libmetrics.so, which is preferred.
+
+- To access the metrics library API in the module, include the
+  <metrics/metrics_library.h> header file. The file is installed in
+  $SYSROOT/usr/include/ when the metrics library is built and installed.
+
+- The API is documented in metrics_library.h under src/platform/metrics/. Before
+  using the API methods, a MetricsLibrary object needs to be constructed and
+  initialized through its Init method.
+
+  For more information on the C API see c_metrics_library.h.
+
+- Samples are sent to Chrome only if the "/home/chronos/Consent To Send Stats"
+  file exists or the metrics are declared enabled in the policy file (see the
+  AreMetricsEnabled API method).
+
+- On the target platform, shortly after the sample is sent, it should be visible
+  in Chrome through "about:histograms".
+
+
+================================================================================
+Histogram Naming Convention
+================================================================================
+
+Use TrackerArea.MetricName. For example:
+
+Platform.DailyUseTime
+Network.TimeToDrop
+
+
+================================================================================
+Server Side
+================================================================================
+
+If the histogram data is visible in about:histograms, it will be sent by an
+official Chrome build to UMA, assuming the user has opted into metrics
+collection. To make the histogram visible on "chromedashboard", the histogram
+description XML file needs to be updated (steps 2 and 3 after following the
+"Details on how to add your own histograms" link under the Histograms tab).
+Include the string "Chrome OS" in the histogram description so that it's easier
+to distinguish Chrome OS specific metrics from general Chrome histograms.
+
+The UMA server logs and keeps the collected field data even if the metric's name
+is not added to the histogram XML. However, the dashboard histogram for that
+metric will show field data as of the histogram XML update date; it will not
+include data for older dates. If past data needs to be displayed, manual
+server-side intervention is required. In other words, one should assume that
+field data collection starts only after the histogram XML has been updated.
+
+
+================================================================================
+The Metrics Client: metrics_client
+================================================================================
+
+metrics_client is a simple shell command-line utility for sending histogram
+samples and user actions. It's installed under /usr/bin on the target platform
+and uses libmetrics to send the data to Chrome. The utility is useful for
+generating metrics from shell scripts.
+
+For usage information and command-line options, run "metrics_client" on the
+target platform or look for "Usage:" in metrics_client.cc.
+
+
+================================================================================
+The Metrics Daemon: metrics_daemon
+================================================================================
+
+metrics_daemon is a daemon that runs in the background on the target platform
+and is intended for passive or ongoing metrics collection, or metrics collection
+requiring feedback from multiple modules. For example, it listens to D-Bus
+signals related to the user session and screen saver states to determine if the
+user is actively using the device or not and generates the corresponding
+data. The metrics daemon uses libmetrics to send the data to Chrome.
+
+The recommended way to generate metrics data from a module is to link and use
+libmetrics directly. However, the module could instead send signals to or
+communicate in some alternative way with the metrics daemon. Then the metrics
+daemon needs to monitor for the relevant events and take appropriate action --
+for example, aggregate data and send the histogram samples.
+
+
+================================================================================
+FAQ
+================================================================================
+
+Q. What should my histogram's |min| and |max| values be set at?
+
+A. You should set the values to a range that covers the vast majority of samples
+   that would appear in the field. Note that samples below the |min| will still
+   be collected in the underflow bucket and samples above the |max| will end up
+   in the overflow bucket. Also, the reported mean of the data will be correct
+   regardless of the range.
+
+Q. How many buckets should I use in my histogram?
+
+A. You should allocate as many buckets as necessary to perform proper analysis
+   on the collected data. Note, however, that the memory allocated in Chrome for
+   each histogram is proportional to the number of buckets. Therefore, it is
+   strongly recommended to keep this number low (e.g., 50 is normal, while 100
+   is probably high).
+
+Q. When should I use an enumeration (linear) histogram vs. a regular
+   (exponential) histogram?
+
+A. Enumeration histograms should really be used only for sampling enumerated
+   events and, in some cases, percentages. Normally, you should use a regular
+   histogram with exponential bucket layout that provides higher resolution at
+   the low end of the range and lower resolution at the high end. Regular
+   histograms are generally used for collecting performance data (e.g., timing,
+   memory usage, power) as well as aggregated event counts.
diff --git a/metricsd/WATCHLISTS b/metricsd/WATCHLISTS
new file mode 100644
index 0000000..a051f35
--- /dev/null
+++ b/metricsd/WATCHLISTS
@@ -0,0 +1,16 @@
+# See http://dev.chromium.org/developers/contributing-code/watchlists for
+# a description of this file's format.
+# Please keep these keys in alphabetical order.
+
+{
+  'WATCHLIST_DEFINITIONS': {
+    'all': {
+      'filepath': '.',
+    },
+  },
+  'WATCHLISTS': {
+    'all': ['petkov@chromium.org',
+                'semenzato@chromium.org',
+                'sosa@chromium.org']
+  },
+}
diff --git a/metricsd/c_metrics_library.cc b/metricsd/c_metrics_library.cc
new file mode 100644
index 0000000..0503876
--- /dev/null
+++ b/metricsd/c_metrics_library.cc
@@ -0,0 +1,90 @@
+/*
+ * 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.
+ */
+
+//
+// C wrapper to libmetrics
+//
+
+#include "metrics/c_metrics_library.h"
+
+#include <string>
+
+#include "metrics/metrics_library.h"
+
+extern "C" CMetricsLibrary CMetricsLibraryNew(void) {
+  MetricsLibrary* lib = new MetricsLibrary;
+  return reinterpret_cast<CMetricsLibrary>(lib);
+}
+
+extern "C" void CMetricsLibraryDelete(CMetricsLibrary handle) {
+  MetricsLibrary* lib = reinterpret_cast<MetricsLibrary*>(handle);
+  delete lib;
+}
+
+extern "C" void CMetricsLibraryInit(CMetricsLibrary handle) {
+  MetricsLibrary* lib = reinterpret_cast<MetricsLibrary*>(handle);
+  if (lib != NULL)
+    lib->Init();
+}
+
+extern "C" int CMetricsLibrarySendToUMA(CMetricsLibrary handle,
+                                        const char* name, int sample,
+                                        int min, int max, int nbuckets) {
+  MetricsLibrary* lib = reinterpret_cast<MetricsLibrary*>(handle);
+  if (lib == NULL)
+    return 0;
+  return lib->SendToUMA(std::string(name), sample, min, max, nbuckets);
+}
+
+extern "C" int CMetricsLibrarySendEnumToUMA(CMetricsLibrary handle,
+                                            const char* name, int sample,
+                                            int max) {
+  MetricsLibrary* lib = reinterpret_cast<MetricsLibrary*>(handle);
+  if (lib == NULL)
+    return 0;
+  return lib->SendEnumToUMA(std::string(name), sample, max);
+}
+
+extern "C" int CMetricsLibrarySendSparseToUMA(CMetricsLibrary handle,
+                                              const char* name, int sample) {
+  MetricsLibrary* lib = reinterpret_cast<MetricsLibrary*>(handle);
+  if (lib == NULL)
+    return 0;
+  return lib->SendSparseToUMA(std::string(name), sample);
+}
+
+extern "C" int CMetricsLibrarySendUserActionToUMA(CMetricsLibrary handle,
+                                                  const char* action) {
+  MetricsLibrary* lib = reinterpret_cast<MetricsLibrary*>(handle);
+  if (lib == NULL)
+    return 0;
+  return lib->SendUserActionToUMA(std::string(action));
+}
+
+extern "C" int CMetricsLibrarySendCrashToUMA(CMetricsLibrary handle,
+                                            const char* crash_kind) {
+  MetricsLibrary* lib = reinterpret_cast<MetricsLibrary*>(handle);
+  if (lib == NULL)
+    return 0;
+  return lib->SendCrashToUMA(crash_kind);
+}
+
+extern "C" int CMetricsLibraryAreMetricsEnabled(CMetricsLibrary handle) {
+  MetricsLibrary* lib = reinterpret_cast<MetricsLibrary*>(handle);
+  if (lib == NULL)
+    return 0;
+  return lib->AreMetricsEnabled();
+}
diff --git a/metricsd/constants.h b/metricsd/constants.h
new file mode 100644
index 0000000..d65e0e0
--- /dev/null
+++ b/metricsd/constants.h
@@ -0,0 +1,29 @@
+//
+// 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 METRICS_CONSTANTS_H_
+#define METRICS_CONSTANTS_H_
+
+namespace metrics {
+static const char kMetricsDirectory[] = "/data/misc/metrics/";
+static const char kMetricsEventsFilePath[] = "/data/misc/metrics/uma-events";
+static const char kMetricsGUIDFilePath[] = "/data/misc/metrics/Sysinfo.GUID";
+static const char kMetricsServer[] = "http://clients4.google.com/uma/v2";
+static const char kConsentFilePath[] = "/data/misc/metrics/enabled";
+static const char kDefaultVersion[] = "0.0.0.0";
+}  // namespace metrics
+
+#endif  // METRICS_CONSTANTS_H_
diff --git a/metricsd/include/metrics/c_metrics_library.h b/metricsd/include/metrics/c_metrics_library.h
new file mode 100644
index 0000000..4e7e666
--- /dev/null
+++ b/metricsd/include/metrics/c_metrics_library.h
@@ -0,0 +1,61 @@
+/*
+ * 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 METRICS_C_METRICS_LIBRARY_H_
+#define METRICS_C_METRICS_LIBRARY_H_
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+typedef struct CMetricsLibraryOpaque* CMetricsLibrary;
+
+// C wrapper for MetricsLibrary::MetricsLibrary.
+CMetricsLibrary CMetricsLibraryNew(void);
+
+// C wrapper for MetricsLibrary::~MetricsLibrary.
+void CMetricsLibraryDelete(CMetricsLibrary handle);
+
+// C wrapper for MetricsLibrary::Init.
+void CMetricsLibraryInit(CMetricsLibrary handle);
+
+// C wrapper for MetricsLibrary::SendToUMA.
+int CMetricsLibrarySendToUMA(CMetricsLibrary handle,
+                             const char* name, int sample,
+                             int min, int max, int nbuckets);
+
+// C wrapper for MetricsLibrary::SendEnumToUMA.
+int CMetricsLibrarySendEnumToUMA(CMetricsLibrary handle,
+                                 const char* name, int sample, int max);
+
+// C wrapper for MetricsLibrary::SendSparseToUMA.
+int CMetricsLibrarySendSparseToUMA(CMetricsLibrary handle,
+                                   const char* name, int sample);
+
+// C wrapper for MetricsLibrary::SendUserActionToUMA.
+int CMetricsLibrarySendUserActionToUMA(CMetricsLibrary handle,
+                                       const char* action);
+
+// C wrapper for MetricsLibrary::SendCrashToUMA.
+int CMetricsLibrarySendCrashToUMA(CMetricsLibrary handle,
+                                  const char* crash_kind);
+
+// C wrapper for MetricsLibrary::AreMetricsEnabled.
+int CMetricsLibraryAreMetricsEnabled(CMetricsLibrary handle);
+
+#if defined(__cplusplus)
+}
+#endif
+#endif  // METRICS_C_METRICS_LIBRARY_H_
diff --git a/metricsd/include/metrics/metrics_library.h b/metricsd/include/metrics/metrics_library.h
new file mode 100644
index 0000000..4917a7c
--- /dev/null
+++ b/metricsd/include/metrics/metrics_library.h
@@ -0,0 +1,152 @@
+/*
+ * 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 METRICS_METRICS_LIBRARY_H_
+#define METRICS_METRICS_LIBRARY_H_
+
+#include <sys/types.h>
+#include <string>
+#include <unistd.h>
+
+#include <base/compiler_specific.h>
+#include <base/macros.h>
+#include <base/memory/scoped_ptr.h>
+#include <gtest/gtest_prod.h>  // for FRIEND_TEST
+
+class MetricsLibraryInterface {
+ public:
+  virtual void Init() = 0;
+  virtual bool AreMetricsEnabled() = 0;
+  virtual bool SendToUMA(const std::string& name, int sample,
+                         int min, int max, int nbuckets) = 0;
+  virtual bool SendEnumToUMA(const std::string& name, int sample, int max) = 0;
+  virtual bool SendSparseToUMA(const std::string& name, int sample) = 0;
+  virtual bool SendUserActionToUMA(const std::string& action) = 0;
+  virtual ~MetricsLibraryInterface() {}
+};
+
+// Library used to send metrics to Chrome/UMA.
+class MetricsLibrary : public MetricsLibraryInterface {
+ public:
+  MetricsLibrary();
+  virtual ~MetricsLibrary();
+
+  // Initializes the library.
+  void Init() override;
+
+  // Returns whether or not the machine is running in guest mode.
+  bool IsGuestMode();
+
+  // Returns whether or not metrics collection is enabled.
+  bool AreMetricsEnabled() override;
+
+  // Sends histogram data to Chrome for transport to UMA and returns
+  // true on success. This method results in the equivalent of an
+  // asynchronous non-blocking RPC to UMA_HISTOGRAM_CUSTOM_COUNTS
+  // inside Chrome (see base/histogram.h).
+  //
+  // |sample| is the sample value to be recorded (|min| <= |sample| < |max|).
+  // |min| is the minimum value of the histogram samples (|min| > 0).
+  // |max| is the maximum value of the histogram samples.
+  // |nbuckets| is the number of histogram buckets.
+  // [0,min) is the implicit underflow bucket.
+  // [|max|,infinity) is the implicit overflow bucket.
+  //
+  // Note that the memory allocated in Chrome for each histogram is
+  // proportional to the number of buckets. Therefore, it is strongly
+  // recommended to keep this number low (e.g., 50 is normal, while
+  // 100 is high).
+  bool SendToUMA(const std::string& name, int sample,
+                 int min, int max, int nbuckets) override;
+
+  // Sends linear histogram data to Chrome for transport to UMA and
+  // returns true on success. This method results in the equivalent of
+  // an asynchronous non-blocking RPC to UMA_HISTOGRAM_ENUMERATION
+  // inside Chrome (see base/histogram.h).
+  //
+  // |sample| is the sample value to be recorded (1 <= |sample| < |max|).
+  // |max| is the maximum value of the histogram samples.
+  // 0 is the implicit underflow bucket.
+  // [|max|,infinity) is the implicit overflow bucket.
+  //
+  // An enumeration histogram requires |max| + 1 number of
+  // buckets. Note that the memory allocated in Chrome for each
+  // histogram is proportional to the number of buckets. Therefore, it
+  // is strongly recommended to keep this number low (e.g., 50 is
+  // normal, while 100 is high).
+  bool SendEnumToUMA(const std::string& name, int sample, int max) override;
+
+  // Sends sparse histogram sample to Chrome for transport to UMA.  Returns
+  // true on success.
+  //
+  // |sample| is the 32-bit integer value to be recorded.
+  bool SendSparseToUMA(const std::string& name, int sample) override;
+
+  // Sends a user action to Chrome for transport to UMA and returns true on
+  // success. This method results in the equivalent of an asynchronous
+  // non-blocking RPC to UserMetrics::RecordAction.  The new metric must be
+  // added to chrome/tools/extract_actions.py in the Chromium repository, which
+  // should then be run to generate a hash for the new action.
+  //
+  // Until http://crosbug.com/11125 is fixed, the metric must also be added to
+  // chrome/browser/chromeos/external_metrics.cc.
+  //
+  // |action| is the user-generated event (e.g., "MuteKeyPressed").
+  bool SendUserActionToUMA(const std::string& action) override;
+
+  // Sends a signal to UMA that a crash of the given |crash_kind|
+  // has occurred.  Used by UMA to generate stability statistics.
+  bool SendCrashToUMA(const char *crash_kind);
+
+  // Sends a "generic Chrome OS event" to UMA.  This is an event name
+  // that is translated into an enumerated histogram entry.  Event names
+  // are added to metrics_library.cc.  Optionally, they can be added
+  // to histograms.xml---but part of the reason for this is to simplify
+  // the addition of events (at the cost of having to look them up by
+  // number in the histograms dashboard).
+  bool SendCrosEventToUMA(const std::string& event);
+
+ private:
+  friend class CMetricsLibraryTest;
+  friend class MetricsLibraryTest;
+  FRIEND_TEST(MetricsLibraryTest, AreMetricsEnabled);
+  FRIEND_TEST(MetricsLibraryTest, FormatChromeMessage);
+  FRIEND_TEST(MetricsLibraryTest, FormatChromeMessageTooLong);
+  FRIEND_TEST(MetricsLibraryTest, IsDeviceMounted);
+  FRIEND_TEST(MetricsLibraryTest, SendMessageToChrome);
+  FRIEND_TEST(MetricsLibraryTest, SendMessageToChromeUMAEventsBadFileLocation);
+
+  // Sets |*result| to whether or not the |mounts_file| indicates that
+  // the |device_name| is currently mounted.  Uses |buffer| of
+  // |buffer_size| to read the file.  Returns false if any error.
+  bool IsDeviceMounted(const char* device_name,
+                       const char* mounts_file,
+                       char* buffer, int buffer_size,
+                       bool* result);
+
+  // Time at which we last checked if metrics were enabled.
+  static time_t cached_enabled_time_;
+
+  // Cached state of whether or not metrics were enabled.
+  static bool cached_enabled_;
+
+  std::string uma_events_file_;
+  std::string consent_file_;
+
+  DISALLOW_COPY_AND_ASSIGN(MetricsLibrary);
+};
+
+#endif  // METRICS_METRICS_LIBRARY_H_
diff --git a/metricsd/libmetrics-334380.gyp b/metricsd/libmetrics-334380.gyp
new file mode 100644
index 0000000..9771821
--- /dev/null
+++ b/metricsd/libmetrics-334380.gyp
@@ -0,0 +1,8 @@
+{
+  'variables': {
+    'libbase_ver': 334380,
+  },
+  'includes': [
+    'libmetrics.gypi',
+  ],
+}
diff --git a/metricsd/libmetrics.gypi b/metricsd/libmetrics.gypi
new file mode 100644
index 0000000..5b90a55
--- /dev/null
+++ b/metricsd/libmetrics.gypi
@@ -0,0 +1,33 @@
+{
+  'target_defaults': {
+    'variables': {
+      'deps': [
+        'libchrome-<(libbase_ver)',
+        'libchromeos-<(libbase_ver)',
+      ]
+    },
+    'cflags_cc': [
+      '-fno-exceptions',
+    ],
+  },
+  'targets': [
+    {
+      'target_name': 'libmetrics-<(libbase_ver)',
+      'type': 'shared_library',
+      'cflags': [
+        '-fvisibility=default',
+      ],
+      'libraries+': [
+        '-lpolicy-<(libbase_ver)',
+      ],
+      'sources': [
+        'c_metrics_library.cc',
+        'metrics_library.cc',
+        'serialization/metric_sample.cc',
+        'serialization/serialization_utils.cc',
+        'timer.cc',
+      ],
+      'include_dirs': ['.'],
+    },
+  ],
+}
diff --git a/metricsd/libmetrics.pc.in b/metricsd/libmetrics.pc.in
new file mode 100644
index 0000000..233f318
--- /dev/null
+++ b/metricsd/libmetrics.pc.in
@@ -0,0 +1,7 @@
+bslot=@BSLOT@
+
+Name: libmetrics
+Description: Chrome OS metrics library
+Version: ${bslot}
+Requires.private: libchrome-${bslot}
+Libs: -lmetrics-${bslot}
diff --git a/metricsd/metrics.gyp b/metricsd/metrics.gyp
new file mode 100644
index 0000000..276ec78
--- /dev/null
+++ b/metricsd/metrics.gyp
@@ -0,0 +1,184 @@
+{
+  'target_defaults': {
+    'variables': {
+      'deps': [
+        'dbus-1',
+        'libchrome-<(libbase_ver)',
+        'libchromeos-<(libbase_ver)',
+      ]
+    },
+    'cflags_cc': [
+      '-fno-exceptions',
+    ],
+  },
+  'targets': [
+    {
+      'target_name': 'libmetrics_daemon',
+      'type': 'static_library',
+      'dependencies': [
+        '../metrics/libmetrics-<(libbase_ver).gyp:libmetrics-<(libbase_ver)',
+        'libupload_service',
+        'metrics_proto',
+      ],
+      'link_settings': {
+        'libraries': [
+          '-lrootdev',
+        ],
+      },
+      'sources': [
+        'persistent_integer.cc',
+        'metrics_daemon.cc',
+        'metrics_daemon_main.cc',
+      ],
+      'include_dirs': ['.'],
+    },
+    {
+      'target_name': 'metrics_client',
+      'type': 'executable',
+      'dependencies': [
+        '../metrics/libmetrics-<(libbase_ver).gyp:libmetrics-<(libbase_ver)',
+      ],
+      'sources': [
+        'metrics_client.cc',
+      ]
+    },
+    {
+      'target_name': 'libupload_service',
+      'type': 'static_library',
+      'dependencies': [
+        'metrics_proto',
+        '../metrics/libmetrics-<(libbase_ver).gyp:libmetrics-<(libbase_ver)',
+      ],
+      'link_settings': {
+        'libraries': [
+          '-lvboot_host',
+        ],
+      },
+      'variables': {
+        'exported_deps': [
+          'protobuf-lite',
+        ],
+        'deps': [
+          '<@(exported_deps)',
+        ],
+      },
+      'all_dependent_settings': {
+        'variables': {
+          'deps+': [
+            '<@(exported_deps)',
+          ],
+        },
+      },
+      'sources': [
+        'uploader/upload_service.cc',
+        'uploader/metrics_hashes.cc',
+        'uploader/metrics_log.cc',
+        'uploader/metrics_log_base.cc',
+        'uploader/system_profile_cache.cc',
+        'uploader/sender_http.cc',
+      ],
+      'include_dirs': ['.']
+    },
+    {
+      'target_name': 'metrics_proto',
+      'type': 'static_library',
+      'variables': {
+        'proto_in_dir': 'uploader/proto',
+        'proto_out_dir': 'include/metrics/uploader/proto',
+      },
+      'sources': [
+        '<(proto_in_dir)/chrome_user_metrics_extension.proto',
+        '<(proto_in_dir)/histogram_event.proto',
+        '<(proto_in_dir)/system_profile.proto',
+        '<(proto_in_dir)/user_action_event.proto',
+      ],
+      'includes': [
+        '../common-mk/protoc.gypi'
+      ],
+    },
+  ],
+  'conditions': [
+    ['USE_passive_metrics == 1', {
+      'targets': [
+        {
+          'target_name': 'metrics_daemon',
+          'type': 'executable',
+          'dependencies': ['libmetrics_daemon'],
+        },
+      ],
+    }],
+    ['USE_test == 1', {
+      'targets': [
+        {
+          'target_name': 'persistent_integer_test',
+          'type': 'executable',
+          'includes': ['../common-mk/common_test.gypi'],
+          'sources': [
+            'persistent_integer.cc',
+            'persistent_integer_test.cc',
+          ]
+        },
+        {
+          'target_name': 'metrics_library_test',
+          'type': 'executable',
+          'dependencies': [
+            '../metrics/libmetrics-<(libbase_ver).gyp:libmetrics-<(libbase_ver)',
+          ],
+          'includes': ['../common-mk/common_test.gypi'],
+          'sources': [
+            'metrics_library_test.cc',
+            'serialization/serialization_utils_unittest.cc',
+          ],
+          'link_settings': {
+            'libraries': [
+              '-lpolicy-<(libbase_ver)',
+            ]
+          }
+        },
+        {
+          'target_name': 'timer_test',
+          'type': 'executable',
+          'includes': ['../common-mk/common_test.gypi'],
+          'sources': [
+            'timer.cc',
+            'timer_test.cc',
+          ]
+        },
+        {
+          'target_name': 'upload_service_test',
+          'type': 'executable',
+          'sources': [
+            'persistent_integer.cc',
+            'uploader/metrics_hashes_unittest.cc',
+            'uploader/metrics_log_base_unittest.cc',
+            'uploader/mock/sender_mock.cc',
+            'uploader/upload_service_test.cc',
+          ],
+          'dependencies': [
+            'libupload_service',
+          ],
+          'includes':[
+            '../common-mk/common_test.gypi',
+          ],
+          'include_dirs': ['.']
+        },
+      ],
+    }],
+    ['USE_passive_metrics == 1 and USE_test == 1', {
+      'targets': [
+        {
+          'target_name': 'metrics_daemon_test',
+          'type': 'executable',
+          'dependencies': [
+            'libmetrics_daemon',
+          ],
+          'includes': ['../common-mk/common_test.gypi'],
+          'sources': [
+            'metrics_daemon_test.cc',
+          ],
+          'include_dirs': ['.'],
+        },
+      ],
+    }],
+  ]
+}
diff --git a/metricsd/metrics_client.cc b/metricsd/metrics_client.cc
new file mode 100644
index 0000000..57e96c2
--- /dev/null
+++ b/metricsd/metrics_client.cc
@@ -0,0 +1,210 @@
+/*
+ * 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 <cstdio>
+#include <cstdlib>
+
+#include "metrics/metrics_library.h"
+
+enum Mode {
+    kModeSendSample,
+    kModeSendEnumSample,
+    kModeSendSparseSample,
+    kModeSendUserAction,
+    kModeSendCrosEvent,
+    kModeHasConsent,
+    kModeIsGuestMode,
+};
+
+void ShowUsage() {
+  fprintf(stderr,
+          "Usage:  metrics_client [-t] name sample min max nbuckets\n"
+          "        metrics_client -e   name sample max\n"
+          "        metrics_client -s   name sample\n"
+          "        metrics_client -v   event\n"
+          "        metrics_client -u action\n"
+          "        metrics_client [-cg]\n"
+          "\n"
+          "  default: send metric with integer values \n"
+          "           |min| > 0, |min| <= sample < |max|\n"
+          "  -c: return exit status 0 if user consents to stats, 1 otherwise,\n"
+          "      in guest mode always return 1\n"
+          "  -e: send linear/enumeration histogram data\n"
+          "  -g: return exit status 0 if machine in guest mode, 1 otherwise\n"
+          "  -s: send a sparse histogram sample\n"
+          "  -t: convert sample from double seconds to int milliseconds\n"
+          "  -u: send a user action to Chrome\n"
+          "  -v: send a Platform.CrOSEvent enum histogram sample\n");
+  exit(1);
+}
+
+static int ParseInt(const char *arg) {
+  char *endptr;
+  int value = strtol(arg, &endptr, 0);
+  if (*endptr != '\0') {
+    fprintf(stderr, "metrics client: bad integer \"%s\"\n", arg);
+    ShowUsage();
+  }
+  return value;
+}
+
+static double ParseDouble(const char *arg) {
+  char *endptr;
+  double value = strtod(arg, &endptr);
+  if (*endptr != '\0') {
+    fprintf(stderr, "metrics client: bad double \"%s\"\n", arg);
+    ShowUsage();
+  }
+  return value;
+}
+
+static int SendStats(char* argv[],
+                     int name_index,
+                     enum Mode mode,
+                     bool secs_to_msecs) {
+  const char* name = argv[name_index];
+  int sample;
+  if (secs_to_msecs) {
+    sample = static_cast<int>(ParseDouble(argv[name_index + 1]) * 1000.0);
+  } else {
+    sample = ParseInt(argv[name_index + 1]);
+  }
+
+  MetricsLibrary metrics_lib;
+  metrics_lib.Init();
+  if (mode == kModeSendSparseSample) {
+    metrics_lib.SendSparseToUMA(name, sample);
+  } else if (mode == kModeSendEnumSample) {
+    int max = ParseInt(argv[name_index + 2]);
+    metrics_lib.SendEnumToUMA(name, sample, max);
+  } else {
+    int min = ParseInt(argv[name_index + 2]);
+    int max = ParseInt(argv[name_index + 3]);
+    int nbuckets = ParseInt(argv[name_index + 4]);
+    metrics_lib.SendToUMA(name, sample, min, max, nbuckets);
+  }
+  return 0;
+}
+
+static int SendUserAction(char* argv[], int action_index) {
+  const char* action = argv[action_index];
+  MetricsLibrary metrics_lib;
+  metrics_lib.Init();
+  metrics_lib.SendUserActionToUMA(action);
+  return 0;
+}
+
+static int SendCrosEvent(char* argv[], int action_index) {
+  const char* event = argv[action_index];
+  bool result;
+  MetricsLibrary metrics_lib;
+  metrics_lib.Init();
+  result = metrics_lib.SendCrosEventToUMA(event);
+  if (!result) {
+    fprintf(stderr, "metrics_client: could not send event %s\n", event);
+    return 1;
+  }
+  return 0;
+}
+
+static int HasConsent() {
+  MetricsLibrary metrics_lib;
+  metrics_lib.Init();
+  return metrics_lib.AreMetricsEnabled() ? 0 : 1;
+}
+
+static int IsGuestMode() {
+  MetricsLibrary metrics_lib;
+  metrics_lib.Init();
+  return metrics_lib.IsGuestMode() ? 0 : 1;
+}
+
+int main(int argc, char** argv) {
+  enum Mode mode = kModeSendSample;
+  bool secs_to_msecs = false;
+
+  // Parse arguments
+  int flag;
+  while ((flag = getopt(argc, argv, "abcegstuv")) != -1) {
+    switch (flag) {
+      case 'c':
+        mode = kModeHasConsent;
+        break;
+      case 'e':
+        mode = kModeSendEnumSample;
+        break;
+      case 'g':
+        mode = kModeIsGuestMode;
+        break;
+      case 's':
+        mode = kModeSendSparseSample;
+        break;
+      case 't':
+        secs_to_msecs = true;
+        break;
+      case 'u':
+        mode = kModeSendUserAction;
+        break;
+      case 'v':
+        mode = kModeSendCrosEvent;
+        break;
+      default:
+        ShowUsage();
+        break;
+    }
+  }
+  int arg_index = optind;
+
+  int expected_args = 0;
+  if (mode == kModeSendSample)
+    expected_args = 5;
+  else if (mode == kModeSendEnumSample)
+    expected_args = 3;
+  else if (mode == kModeSendSparseSample)
+    expected_args = 2;
+  else if (mode == kModeSendUserAction)
+    expected_args = 1;
+  else if (mode == kModeSendCrosEvent)
+    expected_args = 1;
+
+  if ((arg_index + expected_args) != argc) {
+    ShowUsage();
+  }
+
+  switch (mode) {
+    case kModeSendSample:
+    case kModeSendEnumSample:
+    case kModeSendSparseSample:
+      if ((mode != kModeSendSample) && secs_to_msecs) {
+        ShowUsage();
+      }
+      return SendStats(argv,
+                       arg_index,
+                       mode,
+                       secs_to_msecs);
+    case kModeSendUserAction:
+      return SendUserAction(argv, arg_index);
+    case kModeSendCrosEvent:
+      return SendCrosEvent(argv, arg_index);
+    case kModeHasConsent:
+      return HasConsent();
+    case kModeIsGuestMode:
+      return IsGuestMode();
+    default:
+      ShowUsage();
+      return 0;
+  }
+}
diff --git a/metricsd/metrics_daemon.cc b/metricsd/metrics_daemon.cc
new file mode 100644
index 0000000..069f68e
--- /dev/null
+++ b/metricsd/metrics_daemon.cc
@@ -0,0 +1,1117 @@
+/*
+ * 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 "metrics_daemon.h"
+
+#include <fcntl.h>
+#include <inttypes.h>
+#include <math.h>
+#include <string.h>
+#include <sysexits.h>
+#include <time.h>
+
+#include <base/bind.h>
+#include <base/files/file_path.h>
+#include <base/files/file_util.h>
+#include <base/hash.h>
+#include <base/logging.h>
+#include <base/strings/string_number_conversions.h>
+#include <base/strings/string_split.h>
+#include <base/strings/string_util.h>
+#include <base/strings/stringprintf.h>
+#include <base/sys_info.h>
+#include <dbus/dbus.h>
+#include <dbus/message.h>
+
+#include "constants.h"
+#include "uploader/upload_service.h"
+
+using base::FilePath;
+using base::StringPrintf;
+using base::Time;
+using base::TimeDelta;
+using base::TimeTicks;
+using chromeos_metrics::PersistentInteger;
+using std::map;
+using std::string;
+using std::vector;
+
+namespace {
+
+#define SAFE_MESSAGE(e) (e.message ? e.message : "unknown error")
+
+const char kCrashReporterInterface[] = "org.chromium.CrashReporter";
+const char kCrashReporterUserCrashSignal[] = "UserCrash";
+const char kCrashReporterMatchRule[] =
+    "type='signal',interface='%s',path='/',member='%s'";
+
+const int kSecondsPerMinute = 60;
+const int kMinutesPerHour = 60;
+const int kHoursPerDay = 24;
+const int kMinutesPerDay = kHoursPerDay * kMinutesPerHour;
+const int kSecondsPerDay = kSecondsPerMinute * kMinutesPerDay;
+const int kDaysPerWeek = 7;
+const int kSecondsPerWeek = kSecondsPerDay * kDaysPerWeek;
+
+// Interval between calls to UpdateStats().
+const uint32_t kUpdateStatsIntervalMs = 300000;
+
+const char kKernelCrashDetectedFile[] = "/var/run/kernel-crash-detected";
+const char kUncleanShutdownDetectedFile[] =
+    "/var/run/unclean-shutdown-detected";
+
+}  // namespace
+
+// disk stats metrics
+
+// The {Read,Write}Sectors numbers are in sectors/second.
+// A sector is usually 512 bytes.
+
+const char MetricsDaemon::kMetricReadSectorsLongName[] =
+    "Platform.ReadSectorsLong";
+const char MetricsDaemon::kMetricWriteSectorsLongName[] =
+    "Platform.WriteSectorsLong";
+const char MetricsDaemon::kMetricReadSectorsShortName[] =
+    "Platform.ReadSectorsShort";
+const char MetricsDaemon::kMetricWriteSectorsShortName[] =
+    "Platform.WriteSectorsShort";
+
+const int MetricsDaemon::kMetricStatsShortInterval = 1;  // seconds
+const int MetricsDaemon::kMetricStatsLongInterval = 30;  // seconds
+
+const int MetricsDaemon::kMetricMeminfoInterval = 30;        // seconds
+
+// Assume a max rate of 250Mb/s for reads (worse for writes) and 512 byte
+// sectors.
+const int MetricsDaemon::kMetricSectorsIOMax = 500000;  // sectors/second
+const int MetricsDaemon::kMetricSectorsBuckets = 50;    // buckets
+// Page size is 4k, sector size is 0.5k.  We're not interested in page fault
+// rates that the disk cannot sustain.
+const int MetricsDaemon::kMetricPageFaultsMax = kMetricSectorsIOMax / 8;
+const int MetricsDaemon::kMetricPageFaultsBuckets = 50;
+
+// Major page faults, i.e. the ones that require data to be read from disk.
+
+const char MetricsDaemon::kMetricPageFaultsLongName[] =
+    "Platform.PageFaultsLong";
+const char MetricsDaemon::kMetricPageFaultsShortName[] =
+    "Platform.PageFaultsShort";
+
+// Swap in and Swap out
+
+const char MetricsDaemon::kMetricSwapInLongName[] =
+    "Platform.SwapInLong";
+const char MetricsDaemon::kMetricSwapInShortName[] =
+    "Platform.SwapInShort";
+
+const char MetricsDaemon::kMetricSwapOutLongName[] =
+    "Platform.SwapOutLong";
+const char MetricsDaemon::kMetricSwapOutShortName[] =
+    "Platform.SwapOutShort";
+
+const char MetricsDaemon::kMetricsProcStatFileName[] = "/proc/stat";
+const int MetricsDaemon::kMetricsProcStatFirstLineItemsCount = 11;
+
+// Thermal CPU throttling.
+
+const char MetricsDaemon::kMetricScaledCpuFrequencyName[] =
+    "Platform.CpuFrequencyThermalScaling";
+
+// Zram sysfs entries.
+
+const char MetricsDaemon::kComprDataSizeName[] = "compr_data_size";
+const char MetricsDaemon::kOrigDataSizeName[] = "orig_data_size";
+const char MetricsDaemon::kZeroPagesName[] = "zero_pages";
+
+// Memory use stats collection intervals.  We collect some memory use interval
+// at these intervals after boot, and we stop collecting after the last one,
+// with the assumption that in most cases the memory use won't change much
+// after that.
+static const int kMemuseIntervals[] = {
+  1 * kSecondsPerMinute,    // 1 minute mark
+  4 * kSecondsPerMinute,    // 5 minute mark
+  25 * kSecondsPerMinute,   // 0.5 hour mark
+  120 * kSecondsPerMinute,  // 2.5 hour mark
+  600 * kSecondsPerMinute,  // 12.5 hour mark
+};
+
+MetricsDaemon::MetricsDaemon()
+    : memuse_final_time_(0),
+      memuse_interval_index_(0),
+      read_sectors_(0),
+      write_sectors_(0),
+      vmstats_(),
+      stats_state_(kStatsShort),
+      stats_initial_time_(0),
+      ticks_per_second_(0),
+      latest_cpu_use_ticks_(0) {}
+
+MetricsDaemon::~MetricsDaemon() {
+}
+
+double MetricsDaemon::GetActiveTime() {
+  struct timespec ts;
+  int r = clock_gettime(CLOCK_MONOTONIC, &ts);
+  if (r < 0) {
+    PLOG(WARNING) << "clock_gettime(CLOCK_MONOTONIC) failed";
+    return 0;
+  } else {
+    return ts.tv_sec + static_cast<double>(ts.tv_nsec) / (1000 * 1000 * 1000);
+  }
+}
+
+int MetricsDaemon::Run() {
+  if (CheckSystemCrash(kKernelCrashDetectedFile)) {
+    ProcessKernelCrash();
+  }
+
+  if (CheckSystemCrash(kUncleanShutdownDetectedFile)) {
+    ProcessUncleanShutdown();
+  }
+
+  // On OS version change, clear version stats (which are reported daily).
+  int32_t version = GetOsVersionHash();
+  if (version_cycle_->Get() != version) {
+    version_cycle_->Set(version);
+    kernel_crashes_version_count_->Set(0);
+    version_cumulative_active_use_->Set(0);
+    version_cumulative_cpu_use_->Set(0);
+  }
+
+  return chromeos::DBusDaemon::Run();
+}
+
+void MetricsDaemon::RunUploaderTest() {
+  upload_service_.reset(new UploadService(new SystemProfileCache(true,
+                                                                 config_root_),
+                                          metrics_lib_,
+                                          server_));
+  upload_service_->Init(upload_interval_, metrics_file_);
+  upload_service_->UploadEvent();
+}
+
+uint32_t MetricsDaemon::GetOsVersionHash() {
+  static uint32_t cached_version_hash = 0;
+  static bool version_hash_is_cached = false;
+  if (version_hash_is_cached)
+    return cached_version_hash;
+  version_hash_is_cached = true;
+  std::string version = metrics::kDefaultVersion;
+  // The version might not be set for development devices. In this case, use the
+  // zero version.
+  base::SysInfo::GetLsbReleaseValue("BRILLO_VERSION", &version);
+  cached_version_hash = base::Hash(version);
+  if (testing_) {
+    cached_version_hash = 42;  // return any plausible value for the hash
+  }
+  return cached_version_hash;
+}
+
+void MetricsDaemon::Init(bool testing,
+                         bool uploader_active,
+                         bool dbus_enabled,
+                         MetricsLibraryInterface* metrics_lib,
+                         const string& vmstats_path,
+                         const string& scaling_max_freq_path,
+                         const string& cpuinfo_max_freq_path,
+                         const base::TimeDelta& upload_interval,
+                         const string& server,
+                         const string& metrics_file,
+                         const string& config_root) {
+  testing_ = testing;
+  uploader_active_ = uploader_active;
+  dbus_enabled_ = dbus_enabled;
+  config_root_ = config_root;
+  DCHECK(metrics_lib != nullptr);
+  metrics_lib_ = metrics_lib;
+
+  upload_interval_ = upload_interval;
+  server_ = server;
+  metrics_file_ = metrics_file;
+
+  // Get ticks per second (HZ) on this system.
+  // Sysconf cannot fail, so no sanity checks are needed.
+  ticks_per_second_ = sysconf(_SC_CLK_TCK);
+
+  daily_active_use_.reset(
+      new PersistentInteger("Platform.DailyUseTime"));
+  version_cumulative_active_use_.reset(
+      new PersistentInteger("Platform.CumulativeDailyUseTime"));
+  version_cumulative_cpu_use_.reset(
+      new PersistentInteger("Platform.CumulativeCpuTime"));
+
+  kernel_crash_interval_.reset(
+      new PersistentInteger("Platform.KernelCrashInterval"));
+  unclean_shutdown_interval_.reset(
+      new PersistentInteger("Platform.UncleanShutdownInterval"));
+  user_crash_interval_.reset(
+      new PersistentInteger("Platform.UserCrashInterval"));
+
+  any_crashes_daily_count_.reset(
+      new PersistentInteger("Platform.AnyCrashesDaily"));
+  any_crashes_weekly_count_.reset(
+      new PersistentInteger("Platform.AnyCrashesWeekly"));
+  user_crashes_daily_count_.reset(
+      new PersistentInteger("Platform.UserCrashesDaily"));
+  user_crashes_weekly_count_.reset(
+      new PersistentInteger("Platform.UserCrashesWeekly"));
+  kernel_crashes_daily_count_.reset(
+      new PersistentInteger("Platform.KernelCrashesDaily"));
+  kernel_crashes_weekly_count_.reset(
+      new PersistentInteger("Platform.KernelCrashesWeekly"));
+  kernel_crashes_version_count_.reset(
+      new PersistentInteger("Platform.KernelCrashesSinceUpdate"));
+  unclean_shutdowns_daily_count_.reset(
+      new PersistentInteger("Platform.UncleanShutdownsDaily"));
+  unclean_shutdowns_weekly_count_.reset(
+      new PersistentInteger("Platform.UncleanShutdownsWeekly"));
+
+  daily_cycle_.reset(new PersistentInteger("daily.cycle"));
+  weekly_cycle_.reset(new PersistentInteger("weekly.cycle"));
+  version_cycle_.reset(new PersistentInteger("version.cycle"));
+
+  vmstats_path_ = vmstats_path;
+  scaling_max_freq_path_ = scaling_max_freq_path;
+  cpuinfo_max_freq_path_ = cpuinfo_max_freq_path;
+}
+
+int MetricsDaemon::OnInit() {
+  int return_code = dbus_enabled_ ? chromeos::DBusDaemon::OnInit() :
+      chromeos::Daemon::OnInit();
+  if (return_code != EX_OK)
+    return return_code;
+
+  if (testing_)
+    return EX_OK;
+
+  if (dbus_enabled_) {
+    bus_->AssertOnDBusThread();
+    CHECK(bus_->SetUpAsyncOperations());
+
+    if (bus_->is_connected()) {
+      const std::string match_rule =
+          base::StringPrintf(kCrashReporterMatchRule,
+                             kCrashReporterInterface,
+                             kCrashReporterUserCrashSignal);
+
+      bus_->AddFilterFunction(&MetricsDaemon::MessageFilter, this);
+
+      DBusError error;
+      dbus_error_init(&error);
+      bus_->AddMatch(match_rule, &error);
+
+      if (dbus_error_is_set(&error)) {
+        LOG(ERROR) << "Failed to add match rule \"" << match_rule << "\". Got "
+            << error.name << ": " << error.message;
+        return EX_SOFTWARE;
+      }
+    } else {
+      LOG(ERROR) << "DBus isn't connected.";
+      return EX_UNAVAILABLE;
+    }
+  }
+
+  if (uploader_active_) {
+    upload_service_.reset(
+        new UploadService(new SystemProfileCache(), metrics_lib_, server_));
+    upload_service_->Init(upload_interval_, metrics_file_);
+  }
+
+  return EX_OK;
+}
+
+void MetricsDaemon::OnShutdown(int* return_code) {
+  if (!testing_ && dbus_enabled_ && bus_->is_connected()) {
+    const std::string match_rule =
+        base::StringPrintf(kCrashReporterMatchRule,
+                           kCrashReporterInterface,
+                           kCrashReporterUserCrashSignal);
+
+    bus_->RemoveFilterFunction(&MetricsDaemon::MessageFilter, this);
+
+    DBusError error;
+    dbus_error_init(&error);
+    bus_->RemoveMatch(match_rule, &error);
+
+    if (dbus_error_is_set(&error)) {
+      LOG(ERROR) << "Failed to remove match rule \"" << match_rule << "\". Got "
+          << error.name << ": " << error.message;
+    }
+  }
+  chromeos::DBusDaemon::OnShutdown(return_code);
+}
+
+// static
+DBusHandlerResult MetricsDaemon::MessageFilter(DBusConnection* connection,
+                                               DBusMessage* message,
+                                               void* user_data) {
+  int message_type = dbus_message_get_type(message);
+  if (message_type != DBUS_MESSAGE_TYPE_SIGNAL) {
+    DLOG(WARNING) << "unexpected message type " << message_type;
+    return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
+  }
+
+  // Signal messages always have interfaces.
+  const std::string interface(dbus_message_get_interface(message));
+  const std::string member(dbus_message_get_member(message));
+  DLOG(INFO) << "Got " << interface << "." << member << " D-Bus signal";
+
+  MetricsDaemon* daemon = static_cast<MetricsDaemon*>(user_data);
+
+  DBusMessageIter iter;
+  dbus_message_iter_init(message, &iter);
+  if (interface == kCrashReporterInterface) {
+    CHECK_EQ(member, kCrashReporterUserCrashSignal);
+    daemon->ProcessUserCrash();
+  } else {
+    // Ignore messages from the bus itself.
+    return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
+  }
+
+  return DBUS_HANDLER_RESULT_HANDLED;
+}
+
+// One might argue that parts of this should go into
+// chromium/src/base/sys_info_chromeos.c instead, but put it here for now.
+
+TimeDelta MetricsDaemon::GetIncrementalCpuUse() {
+  FilePath proc_stat_path = FilePath(kMetricsProcStatFileName);
+  std::string proc_stat_string;
+  if (!base::ReadFileToString(proc_stat_path, &proc_stat_string)) {
+    LOG(WARNING) << "cannot open " << kMetricsProcStatFileName;
+    return TimeDelta();
+  }
+
+  std::vector<std::string> proc_stat_lines;
+  base::SplitString(proc_stat_string, '\n', &proc_stat_lines);
+  if (proc_stat_lines.empty()) {
+    LOG(WARNING) << "cannot parse " << kMetricsProcStatFileName
+                 << ": " << proc_stat_string;
+    return TimeDelta();
+  }
+  std::vector<std::string> proc_stat_totals;
+  base::SplitStringAlongWhitespace(proc_stat_lines[0], &proc_stat_totals);
+
+  uint64_t user_ticks, user_nice_ticks, system_ticks;
+  if (proc_stat_totals.size() != kMetricsProcStatFirstLineItemsCount ||
+      proc_stat_totals[0] != "cpu" ||
+      !base::StringToUint64(proc_stat_totals[1], &user_ticks) ||
+      !base::StringToUint64(proc_stat_totals[2], &user_nice_ticks) ||
+      !base::StringToUint64(proc_stat_totals[3], &system_ticks)) {
+    LOG(WARNING) << "cannot parse first line: " << proc_stat_lines[0];
+    return TimeDelta(base::TimeDelta::FromSeconds(0));
+  }
+
+  uint64_t total_cpu_use_ticks = user_ticks + user_nice_ticks + system_ticks;
+
+  // Sanity check.
+  if (total_cpu_use_ticks < latest_cpu_use_ticks_) {
+    LOG(WARNING) << "CPU time decreasing from " << latest_cpu_use_ticks_
+                 << " to " << total_cpu_use_ticks;
+    return TimeDelta();
+  }
+
+  uint64_t diff = total_cpu_use_ticks - latest_cpu_use_ticks_;
+  latest_cpu_use_ticks_ = total_cpu_use_ticks;
+  // Use microseconds to avoid significant truncations.
+  return base::TimeDelta::FromMicroseconds(
+      diff * 1000 * 1000 / ticks_per_second_);
+}
+
+void MetricsDaemon::ProcessUserCrash() {
+  // Counts the active time up to now.
+  UpdateStats(TimeTicks::Now(), Time::Now());
+
+  // Reports the active use time since the last crash and resets it.
+  SendCrashIntervalSample(user_crash_interval_);
+
+  any_crashes_daily_count_->Add(1);
+  any_crashes_weekly_count_->Add(1);
+  user_crashes_daily_count_->Add(1);
+  user_crashes_weekly_count_->Add(1);
+}
+
+void MetricsDaemon::ProcessKernelCrash() {
+  // Counts the active time up to now.
+  UpdateStats(TimeTicks::Now(), Time::Now());
+
+  // Reports the active use time since the last crash and resets it.
+  SendCrashIntervalSample(kernel_crash_interval_);
+
+  any_crashes_daily_count_->Add(1);
+  any_crashes_weekly_count_->Add(1);
+  kernel_crashes_daily_count_->Add(1);
+  kernel_crashes_weekly_count_->Add(1);
+
+  kernel_crashes_version_count_->Add(1);
+}
+
+void MetricsDaemon::ProcessUncleanShutdown() {
+  // Counts the active time up to now.
+  UpdateStats(TimeTicks::Now(), Time::Now());
+
+  // Reports the active use time since the last crash and resets it.
+  SendCrashIntervalSample(unclean_shutdown_interval_);
+
+  unclean_shutdowns_daily_count_->Add(1);
+  unclean_shutdowns_weekly_count_->Add(1);
+  any_crashes_daily_count_->Add(1);
+  any_crashes_weekly_count_->Add(1);
+}
+
+bool MetricsDaemon::CheckSystemCrash(const string& crash_file) {
+  FilePath crash_detected(crash_file);
+  if (!base::PathExists(crash_detected))
+    return false;
+
+  // Deletes the crash-detected file so that the daemon doesn't report
+  // another kernel crash in case it's restarted.
+  base::DeleteFile(crash_detected, false);  // not recursive
+  return true;
+}
+
+void MetricsDaemon::StatsReporterInit() {
+  DiskStatsReadStats(&read_sectors_, &write_sectors_);
+  VmStatsReadStats(&vmstats_);
+  // The first time around just run the long stat, so we don't delay boot.
+  stats_state_ = kStatsLong;
+  stats_initial_time_ = GetActiveTime();
+  if (stats_initial_time_ < 0) {
+    LOG(WARNING) << "not collecting disk stats";
+  } else {
+    ScheduleStatsCallback(kMetricStatsLongInterval);
+  }
+}
+
+void MetricsDaemon::ScheduleStatsCallback(int wait) {
+  if (testing_) {
+    return;
+  }
+  base::MessageLoop::current()->PostDelayedTask(FROM_HERE,
+      base::Bind(&MetricsDaemon::StatsCallback, base::Unretained(this)),
+      base::TimeDelta::FromSeconds(wait));
+}
+
+bool MetricsDaemon::VmStatsParseStats(const char* stats,
+                                      struct VmstatRecord* record) {
+  // a mapping of string name to field in VmstatRecord and whether we found it
+  struct mapping {
+    const string name;
+    uint64_t* value_p;
+    bool found;
+  } map[] =
+      { { .name = "pgmajfault",
+          .value_p = &record->page_faults_,
+          .found = false },
+        { .name = "pswpin",
+          .value_p = &record->swap_in_,
+          .found = false },
+        { .name = "pswpout",
+          .value_p = &record->swap_out_,
+          .found = false }, };
+
+  // Each line in the file has the form
+  // <ID> <VALUE>
+  // for instance:
+  // nr_free_pages 213427
+  vector<string> lines;
+  Tokenize(stats, "\n", &lines);
+  for (vector<string>::iterator it = lines.begin();
+       it != lines.end(); ++it) {
+    vector<string> tokens;
+    base::SplitString(*it, ' ', &tokens);
+    if (tokens.size() == 2) {
+      for (unsigned int i = 0; i < sizeof(map)/sizeof(struct mapping); i++) {
+        if (!tokens[0].compare(map[i].name)) {
+          if (!base::StringToUint64(tokens[1], map[i].value_p))
+            return false;
+          map[i].found = true;
+        }
+      }
+    } else {
+      LOG(WARNING) << "unexpected vmstat format";
+    }
+  }
+  // make sure we got all the stats
+  for (unsigned i = 0; i < sizeof(map)/sizeof(struct mapping); i++) {
+    if (map[i].found == false) {
+      LOG(WARNING) << "vmstat missing " << map[i].name;
+      return false;
+    }
+  }
+  return true;
+}
+
+bool MetricsDaemon::VmStatsReadStats(struct VmstatRecord* stats) {
+  string value_string;
+  FilePath* path = new FilePath(vmstats_path_);
+  if (!base::ReadFileToString(*path, &value_string)) {
+    delete path;
+    LOG(WARNING) << "cannot read " << vmstats_path_;
+    return false;
+  }
+  delete path;
+  return VmStatsParseStats(value_string.c_str(), stats);
+}
+
+bool MetricsDaemon::ReadFreqToInt(const string& sysfs_file_name, int* value) {
+  const FilePath sysfs_path(sysfs_file_name);
+  string value_string;
+  if (!base::ReadFileToString(sysfs_path, &value_string)) {
+    LOG(WARNING) << "cannot read " << sysfs_path.value().c_str();
+    return false;
+  }
+  if (!base::RemoveChars(value_string, "\n", &value_string)) {
+    LOG(WARNING) << "no newline in " << value_string;
+    // Continue even though the lack of newline is suspicious.
+  }
+  if (!base::StringToInt(value_string, value)) {
+    LOG(WARNING) << "cannot convert " << value_string << " to int";
+    return false;
+  }
+  return true;
+}
+
+void MetricsDaemon::SendCpuThrottleMetrics() {
+  // |max_freq| is 0 only the first time through.
+  static int max_freq = 0;
+  if (max_freq == -1)
+    // Give up, as sysfs did not report max_freq correctly.
+    return;
+  if (max_freq == 0 || testing_) {
+    // One-time initialization of max_freq.  (Every time when testing.)
+    if (!ReadFreqToInt(cpuinfo_max_freq_path_, &max_freq)) {
+      max_freq = -1;
+      return;
+    }
+    if (max_freq == 0) {
+      LOG(WARNING) << "sysfs reports 0 max CPU frequency\n";
+      max_freq = -1;
+      return;
+    }
+    if (max_freq % 10000 == 1000) {
+      // Special case: system has turbo mode, and max non-turbo frequency is
+      // max_freq - 1000.  This relies on "normal" (non-turbo) frequencies
+      // being multiples of (at least) 10 MHz.  Although there is no guarantee
+      // of this, it seems a fairly reasonable assumption.  Otherwise we should
+      // read scaling_available_frequencies, sort the frequencies, compare the
+      // two highest ones, and check if they differ by 1000 (kHz) (and that's a
+      // hack too, no telling when it will change).
+      max_freq -= 1000;
+    }
+  }
+  int scaled_freq = 0;
+  if (!ReadFreqToInt(scaling_max_freq_path_, &scaled_freq))
+    return;
+  // Frequencies are in kHz.  If scaled_freq > max_freq, turbo is on, but
+  // scaled_freq is not the actual turbo frequency.  We indicate this situation
+  // with a 101% value.
+  int percent = scaled_freq > max_freq ? 101 : scaled_freq / (max_freq / 100);
+  SendLinearSample(kMetricScaledCpuFrequencyName, percent, 101, 102);
+}
+
+// Collects disk and vm stats alternating over a short and a long interval.
+
+void MetricsDaemon::StatsCallback() {
+  uint64_t read_sectors_now, write_sectors_now;
+  struct VmstatRecord vmstats_now;
+  double time_now = GetActiveTime();
+  double delta_time = time_now - stats_initial_time_;
+  if (testing_) {
+    // Fake the time when testing.
+    delta_time = stats_state_ == kStatsShort ?
+        kMetricStatsShortInterval : kMetricStatsLongInterval;
+  }
+  bool diskstats_success = DiskStatsReadStats(&read_sectors_now,
+                                              &write_sectors_now);
+  int delta_read = read_sectors_now - read_sectors_;
+  int delta_write = write_sectors_now - write_sectors_;
+  int read_sectors_per_second = delta_read / delta_time;
+  int write_sectors_per_second = delta_write / delta_time;
+  bool vmstats_success = VmStatsReadStats(&vmstats_now);
+  uint64_t delta_faults = vmstats_now.page_faults_ - vmstats_.page_faults_;
+  uint64_t delta_swap_in = vmstats_now.swap_in_ - vmstats_.swap_in_;
+  uint64_t delta_swap_out = vmstats_now.swap_out_ - vmstats_.swap_out_;
+  uint64_t page_faults_per_second = delta_faults / delta_time;
+  uint64_t swap_in_per_second = delta_swap_in / delta_time;
+  uint64_t swap_out_per_second = delta_swap_out / delta_time;
+
+  switch (stats_state_) {
+    case kStatsShort:
+      if (diskstats_success) {
+        SendSample(kMetricReadSectorsShortName,
+                   read_sectors_per_second,
+                   1,
+                   kMetricSectorsIOMax,
+                   kMetricSectorsBuckets);
+        SendSample(kMetricWriteSectorsShortName,
+                   write_sectors_per_second,
+                   1,
+                   kMetricSectorsIOMax,
+                   kMetricSectorsBuckets);
+      }
+      if (vmstats_success) {
+        SendSample(kMetricPageFaultsShortName,
+                   page_faults_per_second,
+                   1,
+                   kMetricPageFaultsMax,
+                   kMetricPageFaultsBuckets);
+        SendSample(kMetricSwapInShortName,
+                   swap_in_per_second,
+                   1,
+                   kMetricPageFaultsMax,
+                   kMetricPageFaultsBuckets);
+        SendSample(kMetricSwapOutShortName,
+                   swap_out_per_second,
+                   1,
+                   kMetricPageFaultsMax,
+                   kMetricPageFaultsBuckets);
+      }
+      // Schedule long callback.
+      stats_state_ = kStatsLong;
+      ScheduleStatsCallback(kMetricStatsLongInterval -
+                            kMetricStatsShortInterval);
+      break;
+    case kStatsLong:
+      if (diskstats_success) {
+        SendSample(kMetricReadSectorsLongName,
+                   read_sectors_per_second,
+                   1,
+                   kMetricSectorsIOMax,
+                   kMetricSectorsBuckets);
+        SendSample(kMetricWriteSectorsLongName,
+                   write_sectors_per_second,
+                   1,
+                   kMetricSectorsIOMax,
+                   kMetricSectorsBuckets);
+        // Reset sector counters.
+        read_sectors_ = read_sectors_now;
+        write_sectors_ = write_sectors_now;
+      }
+      if (vmstats_success) {
+        SendSample(kMetricPageFaultsLongName,
+                   page_faults_per_second,
+                   1,
+                   kMetricPageFaultsMax,
+                   kMetricPageFaultsBuckets);
+        SendSample(kMetricSwapInLongName,
+                   swap_in_per_second,
+                   1,
+                   kMetricPageFaultsMax,
+                   kMetricPageFaultsBuckets);
+        SendSample(kMetricSwapOutLongName,
+                   swap_out_per_second,
+                   1,
+                   kMetricPageFaultsMax,
+                   kMetricPageFaultsBuckets);
+
+        vmstats_ = vmstats_now;
+      }
+      SendCpuThrottleMetrics();
+      // Set start time for new cycle.
+      stats_initial_time_ = time_now;
+      // Schedule short callback.
+      stats_state_ = kStatsShort;
+      ScheduleStatsCallback(kMetricStatsShortInterval);
+      break;
+    default:
+      LOG(FATAL) << "Invalid stats state";
+  }
+}
+
+void MetricsDaemon::ScheduleMeminfoCallback(int wait) {
+  if (testing_) {
+    return;
+  }
+  base::TimeDelta waitDelta = base::TimeDelta::FromSeconds(wait);
+  base::MessageLoop::current()->PostDelayedTask(FROM_HERE,
+      base::Bind(&MetricsDaemon::MeminfoCallback, base::Unretained(this),
+                 waitDelta),
+      waitDelta);
+}
+
+void MetricsDaemon::MeminfoCallback(base::TimeDelta wait) {
+  string meminfo_raw;
+  const FilePath meminfo_path("/proc/meminfo");
+  if (!base::ReadFileToString(meminfo_path, &meminfo_raw)) {
+    LOG(WARNING) << "cannot read " << meminfo_path.value().c_str();
+    return;
+  }
+  // Make both calls even if the first one fails.
+  bool success = ProcessMeminfo(meminfo_raw);
+  bool reschedule =
+      ReportZram(base::FilePath(FILE_PATH_LITERAL("/sys/block/zram0"))) &&
+      success;
+  if (reschedule) {
+    base::MessageLoop::current()->PostDelayedTask(FROM_HERE,
+        base::Bind(&MetricsDaemon::MeminfoCallback, base::Unretained(this),
+                   wait),
+        wait);
+  }
+}
+
+// static
+bool MetricsDaemon::ReadFileToUint64(const base::FilePath& path,
+                                     uint64_t* value) {
+  std::string content;
+  if (!base::ReadFileToString(path, &content)) {
+    PLOG(WARNING) << "cannot read " << path.MaybeAsASCII();
+    return false;
+  }
+  // Remove final newline.
+  base::TrimWhitespaceASCII(content, base::TRIM_TRAILING, &content);
+  if (!base::StringToUint64(content, value)) {
+    LOG(WARNING) << "invalid integer: " << content;
+    return false;
+  }
+  return true;
+}
+
+bool MetricsDaemon::ReportZram(const base::FilePath& zram_dir) {
+  // Data sizes are in bytes.  |zero_pages| is in number of pages.
+  uint64_t compr_data_size, orig_data_size, zero_pages;
+  const size_t page_size = 4096;
+
+  if (!ReadFileToUint64(zram_dir.Append(kComprDataSizeName),
+                        &compr_data_size) ||
+      !ReadFileToUint64(zram_dir.Append(kOrigDataSizeName), &orig_data_size) ||
+      !ReadFileToUint64(zram_dir.Append(kZeroPagesName), &zero_pages)) {
+    return false;
+  }
+
+  // |orig_data_size| does not include zero-filled pages.
+  orig_data_size += zero_pages * page_size;
+
+  const int compr_data_size_mb = compr_data_size >> 20;
+  const int savings_mb = (orig_data_size - compr_data_size) >> 20;
+  const int zero_ratio_percent = zero_pages * page_size * 100 / orig_data_size;
+
+  // Report compressed size in megabytes.  100 MB or less has little impact.
+  SendSample("Platform.ZramCompressedSize", compr_data_size_mb, 100, 4000, 50);
+  SendSample("Platform.ZramSavings", savings_mb, 100, 4000, 50);
+  // The compression ratio is multiplied by 100 for better resolution.  The
+  // ratios of interest are between 1 and 6 (100% and 600% as reported).  We
+  // don't want samples when very little memory is being compressed.
+  if (compr_data_size_mb >= 1) {
+    SendSample("Platform.ZramCompressionRatioPercent",
+               orig_data_size * 100 / compr_data_size, 100, 600, 50);
+  }
+  // The values of interest for zero_pages are between 1MB and 1GB.  The units
+  // are number of pages.
+  SendSample("Platform.ZramZeroPages", zero_pages, 256, 256 * 1024, 50);
+  SendSample("Platform.ZramZeroRatioPercent", zero_ratio_percent, 1, 50, 50);
+
+  return true;
+}
+
+bool MetricsDaemon::ProcessMeminfo(const string& meminfo_raw) {
+  static const MeminfoRecord fields_array[] = {
+    { "MemTotal", "MemTotal" },  // SPECIAL CASE: total system memory
+    { "MemFree", "MemFree" },
+    { "Buffers", "Buffers" },
+    { "Cached", "Cached" },
+    // { "SwapCached", "SwapCached" },
+    { "Active", "Active" },
+    { "Inactive", "Inactive" },
+    { "ActiveAnon", "Active(anon)" },
+    { "InactiveAnon", "Inactive(anon)" },
+    { "ActiveFile" , "Active(file)" },
+    { "InactiveFile", "Inactive(file)" },
+    { "Unevictable", "Unevictable", kMeminfoOp_HistLog },
+    // { "Mlocked", "Mlocked" },
+    { "SwapTotal", "SwapTotal", kMeminfoOp_SwapTotal },
+    { "SwapFree", "SwapFree", kMeminfoOp_SwapFree },
+    // { "Dirty", "Dirty" },
+    // { "Writeback", "Writeback" },
+    { "AnonPages", "AnonPages" },
+    { "Mapped", "Mapped" },
+    { "Shmem", "Shmem", kMeminfoOp_HistLog },
+    { "Slab", "Slab", kMeminfoOp_HistLog },
+    // { "SReclaimable", "SReclaimable" },
+    // { "SUnreclaim", "SUnreclaim" },
+  };
+  vector<MeminfoRecord> fields(fields_array,
+                               fields_array + arraysize(fields_array));
+  if (!FillMeminfo(meminfo_raw, &fields)) {
+    return false;
+  }
+  int total_memory = fields[0].value;
+  if (total_memory == 0) {
+    // this "cannot happen"
+    LOG(WARNING) << "borked meminfo parser";
+    return false;
+  }
+  int swap_total = 0;
+  int swap_free = 0;
+  // Send all fields retrieved, except total memory.
+  for (unsigned int i = 1; i < fields.size(); i++) {
+    string metrics_name = base::StringPrintf("Platform.Meminfo%s",
+                                             fields[i].name);
+    int percent;
+    switch (fields[i].op) {
+      case kMeminfoOp_HistPercent:
+        // report value as percent of total memory
+        percent = fields[i].value * 100 / total_memory;
+        SendLinearSample(metrics_name, percent, 100, 101);
+        break;
+      case kMeminfoOp_HistLog:
+        // report value in kbytes, log scale, 4Gb max
+        SendSample(metrics_name, fields[i].value, 1, 4 * 1000 * 1000, 100);
+        break;
+      case kMeminfoOp_SwapTotal:
+        swap_total = fields[i].value;
+      case kMeminfoOp_SwapFree:
+        swap_free = fields[i].value;
+        break;
+    }
+  }
+  if (swap_total > 0) {
+    int swap_used = swap_total - swap_free;
+    int swap_used_percent = swap_used * 100 / swap_total;
+    SendSample("Platform.MeminfoSwapUsed", swap_used, 1, 8 * 1000 * 1000, 100);
+    SendLinearSample("Platform.MeminfoSwapUsedPercent", swap_used_percent,
+                     100, 101);
+  }
+  return true;
+}
+
+bool MetricsDaemon::FillMeminfo(const string& meminfo_raw,
+                                vector<MeminfoRecord>* fields) {
+  vector<string> lines;
+  unsigned int nlines = Tokenize(meminfo_raw, "\n", &lines);
+
+  // Scan meminfo output and collect field values.  Each field name has to
+  // match a meminfo entry (case insensitive) after removing non-alpha
+  // characters from the entry.
+  unsigned int ifield = 0;
+  for (unsigned int iline = 0;
+       iline < nlines && ifield < fields->size();
+       iline++) {
+    vector<string> tokens;
+    Tokenize(lines[iline], ": ", &tokens);
+    if (strcmp((*fields)[ifield].match, tokens[0].c_str()) == 0) {
+      // Name matches. Parse value and save.
+      char* rest;
+      (*fields)[ifield].value =
+          static_cast<int>(strtol(tokens[1].c_str(), &rest, 10));
+      if (*rest != '\0') {
+        LOG(WARNING) << "missing meminfo value";
+        return false;
+      }
+      ifield++;
+    }
+  }
+  if (ifield < fields->size()) {
+    // End of input reached while scanning.
+    LOG(WARNING) << "cannot find field " << (*fields)[ifield].match
+                 << " and following";
+    return false;
+  }
+  return true;
+}
+
+void MetricsDaemon::ScheduleMemuseCallback(double interval) {
+  if (testing_) {
+    return;
+  }
+  base::MessageLoop::current()->PostDelayedTask(FROM_HERE,
+      base::Bind(&MetricsDaemon::MemuseCallback, base::Unretained(this)),
+      base::TimeDelta::FromSeconds(interval));
+}
+
+void MetricsDaemon::MemuseCallback() {
+  // Since we only care about active time (i.e. uptime minus sleep time) but
+  // the callbacks are driven by real time (uptime), we check if we should
+  // reschedule this callback due to intervening sleep periods.
+  double now = GetActiveTime();
+  // Avoid intervals of less than one second.
+  double remaining_time = ceil(memuse_final_time_ - now);
+  if (remaining_time > 0) {
+    ScheduleMemuseCallback(remaining_time);
+  } else {
+    // Report stats and advance the measurement interval unless there are
+    // errors or we've completed the last interval.
+    if (MemuseCallbackWork() &&
+        memuse_interval_index_ < arraysize(kMemuseIntervals)) {
+      double interval = kMemuseIntervals[memuse_interval_index_++];
+      memuse_final_time_ = now + interval;
+      ScheduleMemuseCallback(interval);
+    }
+  }
+}
+
+bool MetricsDaemon::MemuseCallbackWork() {
+  string meminfo_raw;
+  const FilePath meminfo_path("/proc/meminfo");
+  if (!base::ReadFileToString(meminfo_path, &meminfo_raw)) {
+    LOG(WARNING) << "cannot read " << meminfo_path.value().c_str();
+    return false;
+  }
+  return ProcessMemuse(meminfo_raw);
+}
+
+bool MetricsDaemon::ProcessMemuse(const string& meminfo_raw) {
+  static const MeminfoRecord fields_array[] = {
+    { "MemTotal", "MemTotal" },  // SPECIAL CASE: total system memory
+    { "ActiveAnon", "Active(anon)" },
+    { "InactiveAnon", "Inactive(anon)" },
+  };
+  vector<MeminfoRecord> fields(fields_array,
+                               fields_array + arraysize(fields_array));
+  if (!FillMeminfo(meminfo_raw, &fields)) {
+    return false;
+  }
+  int total = fields[0].value;
+  int active_anon = fields[1].value;
+  int inactive_anon = fields[2].value;
+  if (total == 0) {
+    // this "cannot happen"
+    LOG(WARNING) << "borked meminfo parser";
+    return false;
+  }
+  string metrics_name = base::StringPrintf("Platform.MemuseAnon%d",
+                                           memuse_interval_index_);
+  SendLinearSample(metrics_name, (active_anon + inactive_anon) * 100 / total,
+                   100, 101);
+  return true;
+}
+
+void MetricsDaemon::SendSample(const string& name, int sample,
+                               int min, int max, int nbuckets) {
+  metrics_lib_->SendToUMA(name, sample, min, max, nbuckets);
+}
+
+void MetricsDaemon::SendKernelCrashesCumulativeCountStats() {
+  // Report the number of crashes for this OS version, but don't clear the
+  // counter.  It is cleared elsewhere on version change.
+  int64_t crashes_count = kernel_crashes_version_count_->Get();
+  SendSample(kernel_crashes_version_count_->Name(),
+             crashes_count,
+             1,                         // value of first bucket
+             500,                       // value of last bucket
+             100);                      // number of buckets
+
+
+  int64_t cpu_use_ms = version_cumulative_cpu_use_->Get();
+  SendSample(version_cumulative_cpu_use_->Name(),
+             cpu_use_ms / 1000,         // stat is in seconds
+             1,                         // device may be used very little...
+             8 * 1000 * 1000,           // ... or a lot (a little over 90 days)
+             100);
+
+  // On the first run after an autoupdate, cpu_use_ms and active_use_seconds
+  // can be zero.  Avoid division by zero.
+  if (cpu_use_ms > 0) {
+    // Send the crash frequency since update in number of crashes per CPU year.
+    SendSample("Logging.KernelCrashesPerCpuYear",
+               crashes_count * kSecondsPerDay * 365 * 1000 / cpu_use_ms,
+               1,
+               1000 * 1000,     // about one crash every 30s of CPU time
+               100);
+  }
+
+  int64_t active_use_seconds = version_cumulative_active_use_->Get();
+  if (active_use_seconds > 0) {
+    SendSample(version_cumulative_active_use_->Name(),
+               active_use_seconds / 1000,  // stat is in seconds
+               1,                          // device may be used very little...
+               8 * 1000 * 1000,            // ... or a lot (about 90 days)
+               100);
+    // Same as above, but per year of active time.
+    SendSample("Logging.KernelCrashesPerActiveYear",
+               crashes_count * kSecondsPerDay * 365 / active_use_seconds,
+               1,
+               1000 * 1000,     // about one crash every 30s of active time
+               100);
+  }
+}
+
+void MetricsDaemon::SendDailyUseSample(
+    const scoped_ptr<PersistentInteger>& use) {
+  SendSample(use->Name(),
+             use->GetAndClear(),
+             1,                        // value of first bucket
+             kSecondsPerDay,           // value of last bucket
+             50);                      // number of buckets
+}
+
+void MetricsDaemon::SendCrashIntervalSample(
+    const scoped_ptr<PersistentInteger>& interval) {
+  SendSample(interval->Name(),
+             interval->GetAndClear(),
+             1,                        // value of first bucket
+             4 * kSecondsPerWeek,      // value of last bucket
+             50);                      // number of buckets
+}
+
+void MetricsDaemon::SendCrashFrequencySample(
+    const scoped_ptr<PersistentInteger>& frequency) {
+  SendSample(frequency->Name(),
+             frequency->GetAndClear(),
+             1,                        // value of first bucket
+             100,                      // value of last bucket
+             50);                      // number of buckets
+}
+
+void MetricsDaemon::SendLinearSample(const string& name, int sample,
+                                     int max, int nbuckets) {
+  // TODO(semenzato): add a proper linear histogram to the Chrome external
+  // metrics API.
+  LOG_IF(FATAL, nbuckets != max + 1) << "unsupported histogram scale";
+  metrics_lib_->SendEnumToUMA(name, sample, max);
+}
+
+void MetricsDaemon::UpdateStats(TimeTicks now_ticks,
+                                Time now_wall_time) {
+  const int elapsed_seconds = (now_ticks - last_update_stats_time_).InSeconds();
+  daily_active_use_->Add(elapsed_seconds);
+  version_cumulative_active_use_->Add(elapsed_seconds);
+  user_crash_interval_->Add(elapsed_seconds);
+  kernel_crash_interval_->Add(elapsed_seconds);
+  version_cumulative_cpu_use_->Add(GetIncrementalCpuUse().InMilliseconds());
+  last_update_stats_time_ = now_ticks;
+
+  const TimeDelta since_epoch = now_wall_time - Time::UnixEpoch();
+  const int day = since_epoch.InDays();
+  const int week = day / 7;
+
+  if (daily_cycle_->Get() != day) {
+    daily_cycle_->Set(day);
+    SendDailyUseSample(daily_active_use_);
+    SendDailyUseSample(version_cumulative_active_use_);
+    SendCrashFrequencySample(any_crashes_daily_count_);
+    SendCrashFrequencySample(user_crashes_daily_count_);
+    SendCrashFrequencySample(kernel_crashes_daily_count_);
+    SendCrashFrequencySample(unclean_shutdowns_daily_count_);
+    SendKernelCrashesCumulativeCountStats();
+  }
+
+  if (weekly_cycle_->Get() != week) {
+    weekly_cycle_->Set(week);
+    SendCrashFrequencySample(any_crashes_weekly_count_);
+    SendCrashFrequencySample(user_crashes_weekly_count_);
+    SendCrashFrequencySample(kernel_crashes_weekly_count_);
+    SendCrashFrequencySample(unclean_shutdowns_weekly_count_);
+  }
+}
+
+void MetricsDaemon::HandleUpdateStatsTimeout() {
+  UpdateStats(TimeTicks::Now(), Time::Now());
+  base::MessageLoop::current()->PostDelayedTask(FROM_HERE,
+      base::Bind(&MetricsDaemon::HandleUpdateStatsTimeout,
+                 base::Unretained(this)),
+      base::TimeDelta::FromMilliseconds(kUpdateStatsIntervalMs));
+}
diff --git a/metricsd/metrics_daemon.h b/metricsd/metrics_daemon.h
new file mode 100644
index 0000000..6f5a3bf
--- /dev/null
+++ b/metricsd/metrics_daemon.h
@@ -0,0 +1,383 @@
+/*
+ * 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 METRICS_METRICS_DAEMON_H_
+#define METRICS_METRICS_DAEMON_H_
+
+#include <stdint.h>
+
+#include <map>
+#include <string>
+#include <vector>
+
+#include <base/files/file_path.h>
+#include <base/memory/scoped_ptr.h>
+#include <base/time/time.h>
+#include <chromeos/daemons/dbus_daemon.h>
+#include <gtest/gtest_prod.h>  // for FRIEND_TEST
+
+#include "metrics/metrics_library.h"
+#include "persistent_integer.h"
+#include "uploader/upload_service.h"
+
+using chromeos_metrics::PersistentInteger;
+
+class MetricsDaemon : public chromeos::DBusDaemon {
+ public:
+  MetricsDaemon();
+  ~MetricsDaemon();
+
+  // Initializes metrics class variables.
+  void Init(bool testing,
+            bool uploader_active,
+            bool dbus_enabled,
+            MetricsLibraryInterface* metrics_lib,
+            const std::string& vmstats_path,
+            const std::string& cpuinfo_max_freq_path,
+            const std::string& scaling_max_freq_path,
+            const base::TimeDelta& upload_interval,
+            const std::string& server,
+            const std::string& metrics_file,
+            const std::string& config_root);
+
+  // Initializes DBus and MessageLoop variables before running the MessageLoop.
+  int OnInit() override;
+
+  // Clean up data set up in OnInit before shutting down message loop.
+  void OnShutdown(int* return_code) override;
+
+  // Does all the work.
+  int Run() override;
+
+  // Triggers an upload event and exit. (Used to test UploadService)
+  void RunUploaderTest();
+
+ protected:
+  // Used also by the unit tests.
+  static const char kComprDataSizeName[];
+  static const char kOrigDataSizeName[];
+  static const char kZeroPagesName[];
+
+ private:
+  friend class MetricsDaemonTest;
+  FRIEND_TEST(MetricsDaemonTest, CheckSystemCrash);
+  FRIEND_TEST(MetricsDaemonTest, ComputeEpochNoCurrent);
+  FRIEND_TEST(MetricsDaemonTest, ComputeEpochNoLast);
+  FRIEND_TEST(MetricsDaemonTest, GetHistogramPath);
+  FRIEND_TEST(MetricsDaemonTest, IsNewEpoch);
+  FRIEND_TEST(MetricsDaemonTest, MessageFilter);
+  FRIEND_TEST(MetricsDaemonTest, ParseVmStats);
+  FRIEND_TEST(MetricsDaemonTest, ProcessKernelCrash);
+  FRIEND_TEST(MetricsDaemonTest, ProcessMeminfo);
+  FRIEND_TEST(MetricsDaemonTest, ProcessMeminfo2);
+  FRIEND_TEST(MetricsDaemonTest, ProcessUncleanShutdown);
+  FRIEND_TEST(MetricsDaemonTest, ProcessUserCrash);
+  FRIEND_TEST(MetricsDaemonTest, ReportCrashesDailyFrequency);
+  FRIEND_TEST(MetricsDaemonTest, ReadFreqToInt);
+  FRIEND_TEST(MetricsDaemonTest, ReportDiskStats);
+  FRIEND_TEST(MetricsDaemonTest, ReportKernelCrashInterval);
+  FRIEND_TEST(MetricsDaemonTest, ReportUncleanShutdownInterval);
+  FRIEND_TEST(MetricsDaemonTest, ReportUserCrashInterval);
+  FRIEND_TEST(MetricsDaemonTest, SendSample);
+  FRIEND_TEST(MetricsDaemonTest, SendCpuThrottleMetrics);
+  FRIEND_TEST(MetricsDaemonTest, SendZramMetrics);
+
+  // State for disk stats collector callback.
+  enum StatsState {
+    kStatsShort,    // short wait before short interval collection
+    kStatsLong,     // final wait before new collection
+  };
+
+  // Data record for aggregating daily usage.
+  class UseRecord {
+   public:
+    UseRecord() : day_(0), seconds_(0) {}
+    int day_;
+    int seconds_;
+  };
+
+  // Type of scale to use for meminfo histograms.  For most of them we use
+  // percent of total RAM, but for some we use absolute numbers, usually in
+  // megabytes, on a log scale from 0 to 4000, and 0 to 8000 for compressed
+  // swap (since it can be larger than total RAM).
+  enum MeminfoOp {
+    kMeminfoOp_HistPercent = 0,
+    kMeminfoOp_HistLog,
+    kMeminfoOp_SwapTotal,
+    kMeminfoOp_SwapFree,
+  };
+
+  // Record for retrieving and reporting values from /proc/meminfo.
+  struct MeminfoRecord {
+    const char* name;        // print name
+    const char* match;       // string to match in output of /proc/meminfo
+    MeminfoOp op;            // histogram scale selector, or other operator
+    int value;               // value from /proc/meminfo
+  };
+
+  // Record for retrieving and reporting values from /proc/vmstat
+  struct VmstatRecord {
+    uint64_t page_faults_;    // major faults
+    uint64_t swap_in_;        // pages swapped in
+    uint64_t swap_out_;       // pages swapped out
+  };
+
+  // Metric parameters.
+  static const char kMetricReadSectorsLongName[];
+  static const char kMetricReadSectorsShortName[];
+  static const char kMetricWriteSectorsLongName[];
+  static const char kMetricWriteSectorsShortName[];
+  static const char kMetricPageFaultsShortName[];
+  static const char kMetricPageFaultsLongName[];
+  static const char kMetricSwapInLongName[];
+  static const char kMetricSwapInShortName[];
+  static const char kMetricSwapOutLongName[];
+  static const char kMetricSwapOutShortName[];
+  static const char kMetricScaledCpuFrequencyName[];
+  static const int kMetricStatsShortInterval;
+  static const int kMetricStatsLongInterval;
+  static const int kMetricMeminfoInterval;
+  static const int kMetricSectorsIOMax;
+  static const int kMetricSectorsBuckets;
+  static const int kMetricPageFaultsMax;
+  static const int kMetricPageFaultsBuckets;
+  static const char kMetricsDiskStatsPath[];
+  static const char kMetricsVmStatsPath[];
+  static const char kMetricsProcStatFileName[];
+  static const int kMetricsProcStatFirstLineItemsCount;
+
+  // Returns the active time since boot (uptime minus sleep time) in seconds.
+  double GetActiveTime();
+
+  // D-Bus filter callback.
+  static DBusHandlerResult MessageFilter(DBusConnection* connection,
+                                         DBusMessage* message,
+                                         void* user_data);
+
+  // Updates the daily usage file, if necessary, by adding |seconds|
+  // of active use to the |day| since Epoch. If there's usage data for
+  // day in the past in the usage file, that data is sent to UMA and
+  // removed from the file. If there's already usage data for |day| in
+  // the usage file, the |seconds| are accumulated.
+  void LogDailyUseRecord(int day, int seconds);
+
+  // Updates the active use time and logs time between user-space
+  // process crashes.
+  void ProcessUserCrash();
+
+  // Updates the active use time and logs time between kernel crashes.
+  void ProcessKernelCrash();
+
+  // Updates the active use time and logs time between unclean shutdowns.
+  void ProcessUncleanShutdown();
+
+  // Checks if a kernel crash has been detected and returns true if
+  // so.  The method assumes that a kernel crash has happened if
+  // |crash_file| exists.  It removes the file immediately if it
+  // exists, so it must not be called more than once.
+  bool CheckSystemCrash(const std::string& crash_file);
+
+  // Sends a regular (exponential) histogram sample to Chrome for
+  // transport to UMA. See MetricsLibrary::SendToUMA in
+  // metrics_library.h for a description of the arguments.
+  void SendSample(const std::string& name, int sample,
+                  int min, int max, int nbuckets);
+
+  // Sends a linear histogram sample to Chrome for transport to UMA. See
+  // MetricsLibrary::SendToUMA in metrics_library.h for a description of the
+  // arguments.
+  void SendLinearSample(const std::string& name, int sample,
+                        int max, int nbuckets);
+
+  // Sends various cumulative kernel crash-related stats, for instance the
+  // total number of kernel crashes since the last version update.
+  void SendKernelCrashesCumulativeCountStats();
+
+  // Returns the total (system-wide) CPU usage between the time of the most
+  // recent call to this function and now.
+  base::TimeDelta GetIncrementalCpuUse();
+
+  // Sends a sample representing the number of seconds of active use
+  // for a 24-hour period.
+  void SendDailyUseSample(const scoped_ptr<PersistentInteger>& use);
+
+  // Sends a sample representing a time interval between two crashes of the
+  // same type.
+  void SendCrashIntervalSample(const scoped_ptr<PersistentInteger>& interval);
+
+  // Sends a sample representing a frequency of crashes of some type.
+  void SendCrashFrequencySample(const scoped_ptr<PersistentInteger>& frequency);
+
+  // Initializes vm and disk stats reporting.
+  void StatsReporterInit();
+
+  // Schedules a callback for the next vm and disk stats collection.
+  void ScheduleStatsCallback(int wait);
+
+  // Reads cumulative disk statistics from sysfs.  Returns true for success.
+  bool DiskStatsReadStats(uint64_t* read_sectors, uint64_t* write_sectors);
+
+  // Reads cumulative vm statistics from procfs.  Returns true for success.
+  bool VmStatsReadStats(struct VmstatRecord* stats);
+
+  // Parse cumulative vm statistics from a C string.  Returns true for success.
+  bool VmStatsParseStats(const char* stats, struct VmstatRecord* record);
+
+  // Reports disk and vm statistics.
+  void StatsCallback();
+
+  // Schedules meminfo collection callback.
+  void ScheduleMeminfoCallback(int wait);
+
+  // Reports memory statistics.  Reschedules callback on success.
+  void MeminfoCallback(base::TimeDelta wait);
+
+  // Parses content of /proc/meminfo and sends fields of interest to UMA.
+  // Returns false on errors.  |meminfo_raw| contains the content of
+  // /proc/meminfo.
+  bool ProcessMeminfo(const std::string& meminfo_raw);
+
+  // Parses meminfo data from |meminfo_raw|.  |fields| is a vector containing
+  // the fields of interest.  The order of the fields must be the same in which
+  // /proc/meminfo prints them.  The result of parsing fields[i] is placed in
+  // fields[i].value.
+  bool FillMeminfo(const std::string& meminfo_raw,
+                   std::vector<MeminfoRecord>* fields);
+
+  // Schedule a memory use callback in |interval| seconds.
+  void ScheduleMemuseCallback(double interval);
+
+  // Calls MemuseCallbackWork, and possibly schedules next callback, if enough
+  // active time has passed.  Otherwise reschedules itself to simulate active
+  // time callbacks (i.e. wall clock time minus sleep time).
+  void MemuseCallback();
+
+  // Reads /proc/meminfo and sends total anonymous memory usage to UMA.
+  bool MemuseCallbackWork();
+
+  // Parses meminfo data and sends it to UMA.
+  bool ProcessMemuse(const std::string& meminfo_raw);
+
+  // Sends stats for thermal CPU throttling.
+  void SendCpuThrottleMetrics();
+
+  // Reads an integer CPU frequency value from sysfs.
+  bool ReadFreqToInt(const std::string& sysfs_file_name, int* value);
+
+  // Reads the current OS version from /etc/lsb-release and hashes it
+  // to a unsigned 32-bit int.
+  uint32_t GetOsVersionHash();
+
+  // Updates stats, additionally sending them to UMA if enough time has elapsed
+  // since the last report.
+  void UpdateStats(base::TimeTicks now_ticks, base::Time now_wall_time);
+
+  // Invoked periodically by |update_stats_timeout_id_| to call UpdateStats().
+  void HandleUpdateStatsTimeout();
+
+  // Reports zram statistics.
+  bool ReportZram(const base::FilePath& zram_dir);
+
+  // Reads a string from a file and converts it to uint64_t.
+  static bool ReadFileToUint64(const base::FilePath& path, uint64_t* value);
+
+  // VARIABLES
+
+  // Test mode.
+  bool testing_;
+
+  // Whether the uploader is enabled or disabled.
+  bool uploader_active_;
+
+  // Whether or not dbus should be used.
+  // If disabled, we will not collect the frequency of crashes.
+  bool dbus_enabled_;
+
+  // Root of the configuration files to use.
+  std::string config_root_;
+
+  // The metrics library handle.
+  MetricsLibraryInterface* metrics_lib_;
+
+  // Timestamps last network state update.  This timestamp is used to
+  // sample the time from the network going online to going offline so
+  // TimeTicks ensures a monotonically increasing TimeDelta.
+  base::TimeTicks network_state_last_;
+
+  // The last time that UpdateStats() was called.
+  base::TimeTicks last_update_stats_time_;
+
+  // End time of current memuse stat collection interval.
+  double memuse_final_time_;
+
+  // Selects the wait time for the next memory use callback.
+  unsigned int memuse_interval_index_;
+
+  // Contain the most recent disk and vm cumulative stats.
+  uint64_t read_sectors_;
+  uint64_t write_sectors_;
+  struct VmstatRecord vmstats_;
+
+  StatsState stats_state_;
+  double stats_initial_time_;
+
+  // The system "HZ", or frequency of ticks.  Some system data uses ticks as a
+  // unit, and this is used to convert to standard time units.
+  uint32_t ticks_per_second_;
+  // Used internally by GetIncrementalCpuUse() to return the CPU utilization
+  // between calls.
+  uint64_t latest_cpu_use_ticks_;
+
+  // Persistent values and accumulators for crash statistics.
+  scoped_ptr<PersistentInteger> daily_cycle_;
+  scoped_ptr<PersistentInteger> weekly_cycle_;
+  scoped_ptr<PersistentInteger> version_cycle_;
+
+  // Active use accumulated in a day.
+  scoped_ptr<PersistentInteger> daily_active_use_;
+  // Active use accumulated since the latest version update.
+  scoped_ptr<PersistentInteger> version_cumulative_active_use_;
+
+  // The CPU time accumulator.  This contains the CPU time, in milliseconds,
+  // used by the system since the most recent OS version update.
+  scoped_ptr<PersistentInteger> version_cumulative_cpu_use_;
+
+  scoped_ptr<PersistentInteger> user_crash_interval_;
+  scoped_ptr<PersistentInteger> kernel_crash_interval_;
+  scoped_ptr<PersistentInteger> unclean_shutdown_interval_;
+
+  scoped_ptr<PersistentInteger> any_crashes_daily_count_;
+  scoped_ptr<PersistentInteger> any_crashes_weekly_count_;
+  scoped_ptr<PersistentInteger> user_crashes_daily_count_;
+  scoped_ptr<PersistentInteger> user_crashes_weekly_count_;
+  scoped_ptr<PersistentInteger> kernel_crashes_daily_count_;
+  scoped_ptr<PersistentInteger> kernel_crashes_weekly_count_;
+  scoped_ptr<PersistentInteger> kernel_crashes_version_count_;
+  scoped_ptr<PersistentInteger> unclean_shutdowns_daily_count_;
+  scoped_ptr<PersistentInteger> unclean_shutdowns_weekly_count_;
+
+  std::string vmstats_path_;
+  std::string scaling_max_freq_path_;
+  std::string cpuinfo_max_freq_path_;
+
+  base::TimeDelta upload_interval_;
+  std::string server_;
+  std::string metrics_file_;
+
+  scoped_ptr<UploadService> upload_service_;
+};
+
+#endif  // METRICS_METRICS_DAEMON_H_
diff --git a/metricsd/metrics_daemon_main.cc b/metricsd/metrics_daemon_main.cc
new file mode 100644
index 0000000..c3d5cab
--- /dev/null
+++ b/metricsd/metrics_daemon_main.cc
@@ -0,0 +1,92 @@
+/*
+ * 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 <base/at_exit.h>
+#include <base/command_line.h>
+#include <base/logging.h>
+#include <base/strings/string_util.h>
+#include <chromeos/flag_helper.h>
+#include <chromeos/syslog_logging.h>
+
+#include "constants.h"
+#include "metrics_daemon.h"
+
+const char kScalingMaxFreqPath[] =
+    "/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq";
+const char kCpuinfoMaxFreqPath[] =
+    "/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq";
+
+int main(int argc, char** argv) {
+  DEFINE_bool(daemon, true, "run as daemon (use -nodaemon for debugging)");
+
+  // The uploader is disabled by default on ChromeOS as Chrome is responsible
+  // for sending the metrics.
+  DEFINE_bool(uploader, false, "activate the uploader");
+
+  // Upload the metrics once and exit. (used for testing)
+  DEFINE_bool(uploader_test,
+              false,
+              "run the uploader once and exit");
+
+  // Enable dbus.
+  DEFINE_bool(withdbus, true, "Enable dbus");
+
+  // Upload Service flags.
+  DEFINE_int32(upload_interval_secs,
+               1800,
+               "Interval at which metrics_daemon sends the metrics. (needs "
+               "-uploader)");
+  DEFINE_string(server,
+                metrics::kMetricsServer,
+                "Server to upload the metrics to. (needs -uploader)");
+  DEFINE_string(metrics_file,
+                metrics::kMetricsEventsFilePath,
+                "File to use as a proxy for uploading the metrics");
+  DEFINE_string(config_root,
+                "/", "Root of the configuration files (testing only)");
+
+  chromeos::FlagHelper::Init(argc, argv, "Chromium OS Metrics Daemon");
+
+  // Also log to stderr when not running as daemon.
+  chromeos::InitLog(chromeos::kLogToSyslog | chromeos::kLogHeader |
+                    (FLAGS_daemon ? 0 : chromeos::kLogToStderr));
+
+  if (FLAGS_daemon && daemon(0, 0) != 0) {
+    return errno;
+  }
+
+  MetricsLibrary metrics_lib;
+  metrics_lib.Init();
+  MetricsDaemon daemon;
+  daemon.Init(FLAGS_uploader_test,
+              FLAGS_uploader | FLAGS_uploader_test,
+              FLAGS_withdbus,
+              &metrics_lib,
+              "/proc/vmstat",
+              kScalingMaxFreqPath,
+              kCpuinfoMaxFreqPath,
+              base::TimeDelta::FromSeconds(FLAGS_upload_interval_secs),
+              FLAGS_server,
+              FLAGS_metrics_file,
+              FLAGS_config_root);
+
+  if (FLAGS_uploader_test) {
+    daemon.RunUploaderTest();
+    return 0;
+  }
+
+  daemon.Run();
+}
diff --git a/metricsd/metrics_daemon_test.cc b/metricsd/metrics_daemon_test.cc
new file mode 100644
index 0000000..9b5b58e
--- /dev/null
+++ b/metricsd/metrics_daemon_test.cc
@@ -0,0 +1,400 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <inttypes.h>
+#include <utime.h>
+
+#include <string>
+#include <vector>
+
+#include <base/at_exit.h>
+#include <base/files/file_util.h>
+#include <base/strings/string_number_conversions.h>
+#include <base/strings/stringprintf.h>
+#include <chromeos/dbus/service_constants.h>
+#include <gtest/gtest.h>
+
+#include "metrics_daemon.h"
+#include "metrics_library_mock.h"
+#include "persistent_integer_mock.h"
+
+using base::FilePath;
+using base::StringPrintf;
+using base::Time;
+using base::TimeDelta;
+using base::TimeTicks;
+using std::string;
+using std::vector;
+using ::testing::_;
+using ::testing::AnyNumber;
+using ::testing::AtLeast;
+using ::testing::Return;
+using ::testing::StrictMock;
+using chromeos_metrics::PersistentIntegerMock;
+
+static const char kFakeDiskStatsName[] = "fake-disk-stats";
+static const char kFakeDiskStatsFormat[] =
+    "    1793     1788    %" PRIu64 "   105580    "
+    "    196      175     %" PRIu64 "    30290    "
+    "    0    44060   135850\n";
+static const uint64_t kFakeReadSectors[] = {80000, 100000};
+static const uint64_t kFakeWriteSectors[] = {3000, 4000};
+
+static const char kFakeVmStatsName[] = "fake-vm-stats";
+static const char kFakeScalingMaxFreqPath[] = "fake-scaling-max-freq";
+static const char kFakeCpuinfoMaxFreqPath[] = "fake-cpuinfo-max-freq";
+
+class MetricsDaemonTest : public testing::Test {
+ protected:
+  std::string kFakeDiskStats0;
+  std::string kFakeDiskStats1;
+
+  virtual void SetUp() {
+    kFakeDiskStats0 = base::StringPrintf(kFakeDiskStatsFormat,
+                                           kFakeReadSectors[0],
+                                           kFakeWriteSectors[0]);
+    kFakeDiskStats1 = base::StringPrintf(kFakeDiskStatsFormat,
+                                           kFakeReadSectors[1],
+                                           kFakeWriteSectors[1]);
+    CreateFakeDiskStatsFile(kFakeDiskStats0.c_str());
+    CreateUint64ValueFile(base::FilePath(kFakeCpuinfoMaxFreqPath), 10000000);
+    CreateUint64ValueFile(base::FilePath(kFakeScalingMaxFreqPath), 10000000);
+
+    chromeos_metrics::PersistentInteger::SetTestingMode(true);
+    daemon_.Init(true,
+                 false,
+                 &metrics_lib_,
+                 kFakeDiskStatsName,
+                 kFakeVmStatsName,
+                 kFakeScalingMaxFreqPath,
+                 kFakeCpuinfoMaxFreqPath,
+                 base::TimeDelta::FromMinutes(30),
+                 kMetricsServer,
+                 kMetricsFilePath,
+                 "/");
+
+    // Replace original persistent values with mock ones.
+    daily_active_use_mock_ =
+        new StrictMock<PersistentIntegerMock>("1.mock");
+    daemon_.daily_active_use_.reset(daily_active_use_mock_);
+
+    kernel_crash_interval_mock_ =
+        new StrictMock<PersistentIntegerMock>("2.mock");
+    daemon_.kernel_crash_interval_.reset(kernel_crash_interval_mock_);
+
+    user_crash_interval_mock_ =
+        new StrictMock<PersistentIntegerMock>("3.mock");
+    daemon_.user_crash_interval_.reset(user_crash_interval_mock_);
+
+    unclean_shutdown_interval_mock_ =
+        new StrictMock<PersistentIntegerMock>("4.mock");
+    daemon_.unclean_shutdown_interval_.reset(unclean_shutdown_interval_mock_);
+  }
+
+  virtual void TearDown() {
+    EXPECT_EQ(0, unlink(kFakeDiskStatsName));
+    EXPECT_EQ(0, unlink(kFakeScalingMaxFreqPath));
+    EXPECT_EQ(0, unlink(kFakeCpuinfoMaxFreqPath));
+  }
+
+  // Adds active use aggregation counters update expectations that the
+  // specified count will be added.
+  void ExpectActiveUseUpdate(int count) {
+    EXPECT_CALL(*daily_active_use_mock_, Add(count))
+        .Times(1)
+        .RetiresOnSaturation();
+    EXPECT_CALL(*kernel_crash_interval_mock_, Add(count))
+        .Times(1)
+        .RetiresOnSaturation();
+    EXPECT_CALL(*user_crash_interval_mock_, Add(count))
+        .Times(1)
+        .RetiresOnSaturation();
+  }
+
+  // As above, but ignore values of counter updates.
+  void IgnoreActiveUseUpdate() {
+    EXPECT_CALL(*daily_active_use_mock_, Add(_))
+        .Times(1)
+        .RetiresOnSaturation();
+    EXPECT_CALL(*kernel_crash_interval_mock_, Add(_))
+        .Times(1)
+        .RetiresOnSaturation();
+    EXPECT_CALL(*user_crash_interval_mock_, Add(_))
+        .Times(1)
+        .RetiresOnSaturation();
+  }
+
+  // Adds a metrics library mock expectation that the specified metric
+  // will be generated.
+  void ExpectSample(const std::string& name, int sample) {
+    EXPECT_CALL(metrics_lib_, SendToUMA(name, sample, _, _, _))
+        .Times(1)
+        .WillOnce(Return(true))
+        .RetiresOnSaturation();
+  }
+
+  // Creates a new DBus signal message with zero or more string arguments.
+  // The message can be deallocated through DeleteDBusMessage.
+  //
+  // |path| is the object emitting the signal.
+  // |interface| is the interface the signal is emitted from.
+  // |name| is the name of the signal.
+  // |arg_values| contains the values of the string arguments.
+  DBusMessage* NewDBusSignalString(const string& path,
+                                   const string& interface,
+                                   const string& name,
+                                   const vector<string>& arg_values) {
+    DBusMessage* msg = dbus_message_new_signal(path.c_str(),
+                                               interface.c_str(),
+                                               name.c_str());
+    DBusMessageIter iter;
+    dbus_message_iter_init_append(msg, &iter);
+    for (vector<string>::const_iterator it = arg_values.begin();
+         it != arg_values.end(); ++it) {
+      const char* str_value = it->c_str();
+      dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &str_value);
+    }
+    return msg;
+  }
+
+  // Deallocates the DBus message |msg| previously allocated through
+  // dbus_message_new*.
+  void DeleteDBusMessage(DBusMessage* msg) {
+    dbus_message_unref(msg);
+  }
+
+  // Creates or overwrites an input file containing fake disk stats.
+  void CreateFakeDiskStatsFile(const char* fake_stats) {
+    if (unlink(kFakeDiskStatsName) < 0) {
+      EXPECT_EQ(errno, ENOENT);
+    }
+    FILE* f = fopen(kFakeDiskStatsName, "w");
+    EXPECT_EQ(1, fwrite(fake_stats, strlen(fake_stats), 1, f));
+    EXPECT_EQ(0, fclose(f));
+  }
+
+  // Creates or overwrites the file in |path| so that it contains the printable
+  // representation of |value|.
+  void CreateUint64ValueFile(const base::FilePath& path, uint64_t value) {
+    base::DeleteFile(path, false);
+    std::string value_string = base::Uint64ToString(value);
+    ASSERT_EQ(value_string.length(),
+              base::WriteFile(path, value_string.c_str(),
+                              value_string.length()));
+  }
+
+  // The MetricsDaemon under test.
+  MetricsDaemon daemon_;
+
+  // Mocks. They are strict mock so that all unexpected
+  // calls are marked as failures.
+  StrictMock<MetricsLibraryMock> metrics_lib_;
+  StrictMock<PersistentIntegerMock>* daily_active_use_mock_;
+  StrictMock<PersistentIntegerMock>* kernel_crash_interval_mock_;
+  StrictMock<PersistentIntegerMock>* user_crash_interval_mock_;
+  StrictMock<PersistentIntegerMock>* unclean_shutdown_interval_mock_;
+};
+
+TEST_F(MetricsDaemonTest, CheckSystemCrash) {
+  static const char kKernelCrashDetected[] = "test-kernel-crash-detected";
+  EXPECT_FALSE(daemon_.CheckSystemCrash(kKernelCrashDetected));
+
+  base::FilePath crash_detected(kKernelCrashDetected);
+  base::WriteFile(crash_detected, "", 0);
+  EXPECT_TRUE(base::PathExists(crash_detected));
+  EXPECT_TRUE(daemon_.CheckSystemCrash(kKernelCrashDetected));
+  EXPECT_FALSE(base::PathExists(crash_detected));
+  EXPECT_FALSE(daemon_.CheckSystemCrash(kKernelCrashDetected));
+  EXPECT_FALSE(base::PathExists(crash_detected));
+  base::DeleteFile(crash_detected, false);
+}
+
+TEST_F(MetricsDaemonTest, MessageFilter) {
+  // Ignore calls to SendToUMA.
+  EXPECT_CALL(metrics_lib_, SendToUMA(_, _, _, _, _)).Times(AnyNumber());
+
+  DBusMessage* msg = dbus_message_new(DBUS_MESSAGE_TYPE_METHOD_CALL);
+  DBusHandlerResult res =
+      MetricsDaemon::MessageFilter(/* connection */ nullptr, msg, &daemon_);
+  EXPECT_EQ(DBUS_HANDLER_RESULT_NOT_YET_HANDLED, res);
+  DeleteDBusMessage(msg);
+
+  IgnoreActiveUseUpdate();
+  vector<string> signal_args;
+  msg = NewDBusSignalString("/",
+                            "org.chromium.CrashReporter",
+                            "UserCrash",
+                            signal_args);
+  res = MetricsDaemon::MessageFilter(/* connection */ nullptr, msg, &daemon_);
+  EXPECT_EQ(DBUS_HANDLER_RESULT_HANDLED, res);
+  DeleteDBusMessage(msg);
+
+  signal_args.clear();
+  signal_args.push_back("randomstate");
+  signal_args.push_back("bob");  // arbitrary username
+  msg = NewDBusSignalString("/",
+                            "org.chromium.UnknownService.Manager",
+                            "StateChanged",
+                            signal_args);
+  res = MetricsDaemon::MessageFilter(/* connection */ nullptr, msg, &daemon_);
+  EXPECT_EQ(DBUS_HANDLER_RESULT_NOT_YET_HANDLED, res);
+  DeleteDBusMessage(msg);
+}
+
+TEST_F(MetricsDaemonTest, SendSample) {
+  ExpectSample("Dummy.Metric", 3);
+  daemon_.SendSample("Dummy.Metric", /* sample */ 3,
+                     /* min */ 1, /* max */ 100, /* buckets */ 50);
+}
+
+TEST_F(MetricsDaemonTest, ReportDiskStats) {
+  uint64_t read_sectors_now, write_sectors_now;
+  CreateFakeDiskStatsFile(kFakeDiskStats1.c_str());
+  daemon_.DiskStatsReadStats(&read_sectors_now, &write_sectors_now);
+  EXPECT_EQ(read_sectors_now, kFakeReadSectors[1]);
+  EXPECT_EQ(write_sectors_now, kFakeWriteSectors[1]);
+
+  MetricsDaemon::StatsState s_state = daemon_.stats_state_;
+  EXPECT_CALL(metrics_lib_,
+              SendToUMA(_, (kFakeReadSectors[1] - kFakeReadSectors[0]) / 30,
+                        _, _, _));
+  EXPECT_CALL(metrics_lib_,
+              SendToUMA(_, (kFakeWriteSectors[1] - kFakeWriteSectors[0]) / 30,
+                        _, _, _));
+  EXPECT_CALL(metrics_lib_, SendEnumToUMA(_, _, _));  // SendCpuThrottleMetrics
+  daemon_.StatsCallback();
+  EXPECT_TRUE(s_state != daemon_.stats_state_);
+}
+
+TEST_F(MetricsDaemonTest, ProcessMeminfo) {
+  string meminfo =
+      "MemTotal:        2000000 kB\nMemFree:          500000 kB\n"
+      "Buffers:         1000000 kB\nCached:           213652 kB\n"
+      "SwapCached:            0 kB\nActive:           133400 kB\n"
+      "Inactive:         183396 kB\nActive(anon):      92984 kB\n"
+      "Inactive(anon):    58860 kB\nActive(file):      40416 kB\n"
+      "Inactive(file):   124536 kB\nUnevictable:           0 kB\n"
+      "Mlocked:               0 kB\nSwapTotal:             0 kB\n"
+      "SwapFree:              0 kB\nDirty:                40 kB\n"
+      "Writeback:             0 kB\nAnonPages:         92652 kB\n"
+      "Mapped:            59716 kB\nShmem:             59196 kB\n"
+      "Slab:              16656 kB\nSReclaimable:       6132 kB\n"
+      "SUnreclaim:        10524 kB\nKernelStack:        1648 kB\n"
+      "PageTables:         2780 kB\nNFS_Unstable:          0 kB\n"
+      "Bounce:                0 kB\nWritebackTmp:          0 kB\n"
+      "CommitLimit:      970656 kB\nCommitted_AS:    1260528 kB\n"
+      "VmallocTotal:     122880 kB\nVmallocUsed:       12144 kB\n"
+      "VmallocChunk:     103824 kB\nDirectMap4k:        9636 kB\n"
+      "DirectMap2M:     1955840 kB\n";
+
+  // All enum calls must report percents.
+  EXPECT_CALL(metrics_lib_, SendEnumToUMA(_, _, 100)).Times(AtLeast(1));
+  // Check that MemFree is correctly computed at 25%.
+  EXPECT_CALL(metrics_lib_, SendEnumToUMA("Platform.MeminfoMemFree", 25, 100))
+      .Times(AtLeast(1));
+  // Check that we call SendToUma at least once (log histogram).
+  EXPECT_CALL(metrics_lib_, SendToUMA(_, _, _, _, _))
+      .Times(AtLeast(1));
+  // Make sure we don't report fields not in the list.
+  EXPECT_CALL(metrics_lib_, SendToUMA("Platform.MeminfoMlocked", _, _, _, _))
+      .Times(0);
+  EXPECT_CALL(metrics_lib_, SendEnumToUMA("Platform.MeminfoMlocked", _, _))
+      .Times(0);
+  EXPECT_TRUE(daemon_.ProcessMeminfo(meminfo));
+}
+
+TEST_F(MetricsDaemonTest, ProcessMeminfo2) {
+  string meminfo = "MemTotal:        2000000 kB\nMemFree:         1000000 kB\n";
+  // Not enough fields.
+  EXPECT_FALSE(daemon_.ProcessMeminfo(meminfo));
+}
+
+TEST_F(MetricsDaemonTest, ParseVmStats) {
+  static char kVmStats[] = "pswpin 1345\npswpout 8896\n"
+    "foo 100\nbar 200\npgmajfault 42\netcetc 300\n";
+  struct MetricsDaemon::VmstatRecord stats;
+  EXPECT_TRUE(daemon_.VmStatsParseStats(kVmStats, &stats));
+  EXPECT_EQ(stats.page_faults_, 42);
+  EXPECT_EQ(stats.swap_in_, 1345);
+  EXPECT_EQ(stats.swap_out_, 8896);
+}
+
+TEST_F(MetricsDaemonTest, ReadFreqToInt) {
+  const int fake_scaled_freq = 1666999;
+  const int fake_max_freq = 2000000;
+  int scaled_freq = 0;
+  int max_freq = 0;
+  CreateUint64ValueFile(base::FilePath(kFakeScalingMaxFreqPath),
+                        fake_scaled_freq);
+  CreateUint64ValueFile(base::FilePath(kFakeCpuinfoMaxFreqPath), fake_max_freq);
+  EXPECT_TRUE(daemon_.testing_);
+  EXPECT_TRUE(daemon_.ReadFreqToInt(kFakeScalingMaxFreqPath, &scaled_freq));
+  EXPECT_TRUE(daemon_.ReadFreqToInt(kFakeCpuinfoMaxFreqPath, &max_freq));
+  EXPECT_EQ(fake_scaled_freq, scaled_freq);
+  EXPECT_EQ(fake_max_freq, max_freq);
+}
+
+TEST_F(MetricsDaemonTest, SendCpuThrottleMetrics) {
+  CreateUint64ValueFile(base::FilePath(kFakeCpuinfoMaxFreqPath), 2001000);
+  // Test the 101% and 100% cases.
+  CreateUint64ValueFile(base::FilePath(kFakeScalingMaxFreqPath), 2001000);
+  EXPECT_TRUE(daemon_.testing_);
+  EXPECT_CALL(metrics_lib_, SendEnumToUMA(_, 101, 101));
+  daemon_.SendCpuThrottleMetrics();
+  CreateUint64ValueFile(base::FilePath(kFakeScalingMaxFreqPath), 2000000);
+  EXPECT_CALL(metrics_lib_, SendEnumToUMA(_, 100, 101));
+  daemon_.SendCpuThrottleMetrics();
+}
+
+TEST_F(MetricsDaemonTest, SendZramMetrics) {
+  EXPECT_TRUE(daemon_.testing_);
+
+  // |compr_data_size| is the size in bytes of compressed data.
+  const uint64_t compr_data_size = 50 * 1000 * 1000;
+  // The constant '3' is a realistic but random choice.
+  // |orig_data_size| does not include zero pages.
+  const uint64_t orig_data_size = compr_data_size * 3;
+  const uint64_t page_size = 4096;
+  const uint64_t zero_pages = 10 * 1000 * 1000 / page_size;
+
+  CreateUint64ValueFile(base::FilePath(MetricsDaemon::kComprDataSizeName),
+                        compr_data_size);
+  CreateUint64ValueFile(base::FilePath(MetricsDaemon::kOrigDataSizeName),
+                        orig_data_size);
+  CreateUint64ValueFile(base::FilePath(MetricsDaemon::kZeroPagesName),
+                        zero_pages);
+
+  const uint64_t real_orig_size = orig_data_size + zero_pages * page_size;
+  const uint64_t zero_ratio_percent =
+      zero_pages * page_size * 100 / real_orig_size;
+  // Ratio samples are in percents.
+  const uint64_t actual_ratio_sample = real_orig_size * 100 / compr_data_size;
+
+  EXPECT_CALL(metrics_lib_, SendToUMA(_, compr_data_size >> 20, _, _, _));
+  EXPECT_CALL(metrics_lib_,
+              SendToUMA(_, (real_orig_size - compr_data_size) >> 20, _, _, _));
+  EXPECT_CALL(metrics_lib_, SendToUMA(_, actual_ratio_sample, _, _, _));
+  EXPECT_CALL(metrics_lib_, SendToUMA(_, zero_pages, _, _, _));
+  EXPECT_CALL(metrics_lib_, SendToUMA(_, zero_ratio_percent, _, _, _));
+
+  EXPECT_TRUE(daemon_.ReportZram(base::FilePath(".")));
+}
+
+int main(int argc, char** argv) {
+  testing::InitGoogleTest(&argc, argv);
+
+  return RUN_ALL_TESTS();
+}
diff --git a/metricsd/metrics_library.cc b/metricsd/metrics_library.cc
new file mode 100644
index 0000000..c1998a6
--- /dev/null
+++ b/metricsd/metrics_library.cc
@@ -0,0 +1,184 @@
+/*
+ * 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 "metrics/metrics_library.h"
+
+#include <base/logging.h>
+#include <base/strings/stringprintf.h>
+#include <errno.h>
+#include <sys/file.h>
+#include <sys/stat.h>
+
+#include <cstdio>
+#include <cstring>
+
+#include "constants.h"
+#include "serialization/metric_sample.h"
+#include "serialization/serialization_utils.h"
+
+static const char kCrosEventHistogramName[] = "Platform.CrOSEvent";
+static const int kCrosEventHistogramMax = 100;
+
+/* Add new cros events here.
+ *
+ * The index of the event is sent in the message, so please do not
+ * reorder the names.
+ */
+static const char *kCrosEventNames[] = {
+  "ModemManagerCommandSendFailure",  // 0
+  "HwWatchdogReboot",  // 1
+  "Cras.NoCodecsFoundAtBoot",  // 2
+  "Chaps.DatabaseCorrupted",  // 3
+  "Chaps.DatabaseRepairFailure",  // 4
+  "Chaps.DatabaseCreateFailure",  // 5
+  "Attestation.OriginSpecificExhausted",  // 6
+  "SpringPowerSupply.Original.High",  // 7
+  "SpringPowerSupply.Other.High",  // 8
+  "SpringPowerSupply.Original.Low",  // 9
+  "SpringPowerSupply.ChargerIdle",  // 10
+  "TPM.NonZeroDictionaryAttackCounter",  // 11
+  "TPM.EarlyResetDuringCommand",  // 12
+};
+
+time_t MetricsLibrary::cached_enabled_time_ = 0;
+bool MetricsLibrary::cached_enabled_ = false;
+
+MetricsLibrary::MetricsLibrary() : consent_file_(metrics::kConsentFilePath) {}
+MetricsLibrary::~MetricsLibrary() {}
+
+// We take buffer and buffer_size as parameters in order to simplify testing
+// of various alignments of the |device_name| with |buffer_size|.
+bool MetricsLibrary::IsDeviceMounted(const char* device_name,
+                                     const char* mounts_file,
+                                     char* buffer,
+                                     int buffer_size,
+                                     bool* result) {
+  if (buffer == nullptr || buffer_size < 1)
+    return false;
+  int mounts_fd = open(mounts_file, O_RDONLY);
+  if (mounts_fd < 0)
+    return false;
+  // match_offset describes:
+  //   -1 -- not beginning of line
+  //   0..strlen(device_name)-1 -- this offset in device_name is next to match
+  //   strlen(device_name) -- matched full name, just need a space.
+  int match_offset = 0;
+  bool match = false;
+  while (!match) {
+    int read_size = read(mounts_fd, buffer, buffer_size);
+    if (read_size <= 0) {
+      if (errno == -EINTR)
+        continue;
+      break;
+    }
+    for (int i = 0; i < read_size; ++i) {
+      if (buffer[i] == '\n') {
+        match_offset = 0;
+        continue;
+      }
+      if (match_offset < 0) {
+        continue;
+      }
+      if (device_name[match_offset] == '\0') {
+        if (buffer[i] == ' ') {
+          match = true;
+          break;
+        }
+        match_offset = -1;
+        continue;
+      }
+
+      if (buffer[i] == device_name[match_offset]) {
+        ++match_offset;
+      } else {
+        match_offset = -1;
+      }
+    }
+  }
+  close(mounts_fd);
+  *result = match;
+  return true;
+}
+
+bool MetricsLibrary::IsGuestMode() {
+  char buffer[256];
+  bool result = false;
+  if (!IsDeviceMounted("guestfs",
+                       "/proc/mounts",
+                       buffer,
+                       sizeof(buffer),
+                       &result)) {
+    return false;
+  }
+  return result && (access("/var/run/state/logged-in", F_OK) == 0);
+}
+
+bool MetricsLibrary::AreMetricsEnabled() {
+  static struct stat stat_buffer;
+  time_t this_check_time = time(nullptr);
+  if (this_check_time != cached_enabled_time_) {
+    cached_enabled_time_ = this_check_time;
+    cached_enabled_ = stat(consent_file_.c_str(), &stat_buffer) >= 0;
+  }
+  return cached_enabled_;
+}
+
+void MetricsLibrary::Init() {
+  uma_events_file_ = metrics::kMetricsEventsFilePath;
+}
+
+bool MetricsLibrary::SendToUMA(const std::string& name,
+                               int sample,
+                               int min,
+                               int max,
+                               int nbuckets) {
+  return metrics::SerializationUtils::WriteMetricToFile(
+      *metrics::MetricSample::HistogramSample(name, sample, min, max, nbuckets)
+           .get(),
+      metrics::kMetricsEventsFilePath);
+}
+
+bool MetricsLibrary::SendEnumToUMA(const std::string& name, int sample,
+                                   int max) {
+  return metrics::SerializationUtils::WriteMetricToFile(
+      *metrics::MetricSample::LinearHistogramSample(name, sample, max).get(),
+      metrics::kMetricsEventsFilePath);
+}
+
+bool MetricsLibrary::SendSparseToUMA(const std::string& name, int sample) {
+  return metrics::SerializationUtils::WriteMetricToFile(
+      *metrics::MetricSample::SparseHistogramSample(name, sample).get(),
+      metrics::kMetricsEventsFilePath);
+}
+
+bool MetricsLibrary::SendUserActionToUMA(const std::string& action) {
+  return metrics::SerializationUtils::WriteMetricToFile(
+      *metrics::MetricSample::UserActionSample(action).get(), metrics::kMetricsEventsFilePath);
+}
+
+bool MetricsLibrary::SendCrashToUMA(const char *crash_kind) {
+  return metrics::SerializationUtils::WriteMetricToFile(
+      *metrics::MetricSample::CrashSample(crash_kind).get(), metrics::kMetricsEventsFilePath);
+}
+
+bool MetricsLibrary::SendCrosEventToUMA(const std::string& event) {
+  for (size_t i = 0; i < arraysize(kCrosEventNames); i++) {
+    if (strcmp(event.c_str(), kCrosEventNames[i]) == 0) {
+      return SendEnumToUMA(kCrosEventHistogramName, i, kCrosEventHistogramMax);
+    }
+  }
+  return false;
+}
diff --git a/metricsd/metrics_library_mock.h b/metricsd/metrics_library_mock.h
new file mode 100644
index 0000000..3de87a9
--- /dev/null
+++ b/metricsd/metrics_library_mock.h
@@ -0,0 +1,41 @@
+/*
+ * 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 METRICS_METRICS_LIBRARY_MOCK_H_
+#define METRICS_METRICS_LIBRARY_MOCK_H_
+
+#include <string>
+
+#include "metrics/metrics_library.h"
+
+#include <gmock/gmock.h>
+
+class MetricsLibraryMock : public MetricsLibraryInterface {
+ public:
+  bool metrics_enabled_ = true;
+
+  MOCK_METHOD0(Init, void());
+  MOCK_METHOD5(SendToUMA, bool(const std::string& name, int sample,
+                               int min, int max, int nbuckets));
+  MOCK_METHOD3(SendEnumToUMA, bool(const std::string& name, int sample,
+                                   int max));
+  MOCK_METHOD2(SendSparseToUMA, bool(const std::string& name, int sample));
+  MOCK_METHOD1(SendUserActionToUMA, bool(const std::string& action));
+
+  bool AreMetricsEnabled() override {return metrics_enabled_;};
+};
+
+#endif  // METRICS_METRICS_LIBRARY_MOCK_H_
diff --git a/metricsd/metrics_library_test.cc b/metricsd/metrics_library_test.cc
new file mode 100644
index 0000000..c58e3fb
--- /dev/null
+++ b/metricsd/metrics_library_test.cc
@@ -0,0 +1,226 @@
+/*
+ * 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 <cstring>
+
+#include <base/files/file_util.h>
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+#include <policy/mock_device_policy.h>
+#include <policy/libpolicy.h>
+
+#include "metrics/c_metrics_library.h"
+#include "metrics/metrics_library.h"
+
+using base::FilePath;
+using ::testing::_;
+using ::testing::Return;
+using ::testing::AnyNumber;
+
+static const FilePath kTestUMAEventsFile("test-uma-events");
+static const char kTestMounts[] = "test-mounts";
+
+ACTION_P(SetMetricsPolicy, enabled) {
+  *arg0 = enabled;
+  return true;
+}
+
+class MetricsLibraryTest : public testing::Test {
+ protected:
+  virtual void SetUp() {
+    EXPECT_TRUE(lib_.uma_events_file_.empty());
+    lib_.Init();
+    EXPECT_FALSE(lib_.uma_events_file_.empty());
+    lib_.uma_events_file_ = kTestUMAEventsFile.value();
+    EXPECT_EQ(0, WriteFile(kTestUMAEventsFile, "", 0));
+    device_policy_ = new policy::MockDevicePolicy();
+    EXPECT_CALL(*device_policy_, LoadPolicy())
+        .Times(AnyNumber())
+        .WillRepeatedly(Return(true));
+    EXPECT_CALL(*device_policy_, GetMetricsEnabled(_))
+        .Times(AnyNumber())
+        .WillRepeatedly(SetMetricsPolicy(true));
+    provider_ = new policy::PolicyProvider(device_policy_);
+    lib_.SetPolicyProvider(provider_);
+    // Defeat metrics enabled caching between tests.
+    lib_.cached_enabled_time_ = 0;
+  }
+
+  virtual void TearDown() {
+    base::DeleteFile(FilePath(kTestMounts), false);
+    base::DeleteFile(kTestUMAEventsFile, false);
+  }
+
+  void VerifyEnabledCacheHit(bool to_value);
+  void VerifyEnabledCacheEviction(bool to_value);
+
+  MetricsLibrary lib_;
+  policy::MockDevicePolicy* device_policy_;
+  policy::PolicyProvider* provider_;
+};
+
+TEST_F(MetricsLibraryTest, IsDeviceMounted) {
+  static const char kTestContents[] =
+      "0123456789abcde 0123456789abcde\nguestfs foo bar\n";
+  char buffer[1024];
+  int block_sizes[] = { 1, 2, 3, 4, 5, 6, 8, 12, 14, 16, 32, 1024 };
+  bool result;
+  EXPECT_FALSE(lib_.IsDeviceMounted("guestfs",
+                                    "nonexistent",
+                                    buffer,
+                                    1,
+                                    &result));
+  ASSERT_TRUE(base::WriteFile(base::FilePath(kTestMounts),
+                              kTestContents,
+                              strlen(kTestContents)));
+  EXPECT_FALSE(lib_.IsDeviceMounted("guestfs",
+                                    kTestMounts,
+                                    buffer,
+                                    0,
+                                    &result));
+  for (size_t i = 0; i < arraysize(block_sizes); ++i) {
+    EXPECT_TRUE(lib_.IsDeviceMounted("0123456789abcde",
+                                     kTestMounts,
+                                     buffer,
+                                     block_sizes[i],
+                                     &result));
+    EXPECT_TRUE(result);
+    EXPECT_TRUE(lib_.IsDeviceMounted("guestfs",
+                                     kTestMounts,
+                                     buffer,
+                                     block_sizes[i],
+                                     &result));
+    EXPECT_TRUE(result);
+    EXPECT_TRUE(lib_.IsDeviceMounted("0123456",
+                                     kTestMounts,
+                                     buffer,
+                                     block_sizes[i],
+                                     &result));
+    EXPECT_FALSE(result);
+    EXPECT_TRUE(lib_.IsDeviceMounted("9abcde",
+                                     kTestMounts,
+                                     buffer,
+                                     block_sizes[i],
+                                     &result));
+    EXPECT_FALSE(result);
+    EXPECT_TRUE(lib_.IsDeviceMounted("foo",
+                                     kTestMounts,
+                                     buffer,
+                                     block_sizes[i],
+                                     &result));
+    EXPECT_FALSE(result);
+    EXPECT_TRUE(lib_.IsDeviceMounted("bar",
+                                     kTestMounts,
+                                     buffer,
+                                     block_sizes[i],
+                                     &result));
+    EXPECT_FALSE(result);
+  }
+}
+
+TEST_F(MetricsLibraryTest, AreMetricsEnabledFalse) {
+  EXPECT_CALL(*device_policy_, GetMetricsEnabled(_))
+      .WillOnce(SetMetricsPolicy(false));
+  EXPECT_FALSE(lib_.AreMetricsEnabled());
+}
+
+TEST_F(MetricsLibraryTest, AreMetricsEnabledTrue) {
+  EXPECT_TRUE(lib_.AreMetricsEnabled());
+}
+
+void MetricsLibraryTest::VerifyEnabledCacheHit(bool to_value) {
+  // We might step from one second to the next one time, but not 100
+  // times in a row.
+  for (int i = 0; i < 100; ++i) {
+    lib_.cached_enabled_time_ = 0;
+    EXPECT_CALL(*device_policy_, GetMetricsEnabled(_))
+        .WillOnce(SetMetricsPolicy(!to_value));
+    ASSERT_EQ(!to_value, lib_.AreMetricsEnabled());
+    ON_CALL(*device_policy_, GetMetricsEnabled(_))
+        .WillByDefault(SetMetricsPolicy(to_value));
+    if (lib_.AreMetricsEnabled() == !to_value)
+      return;
+  }
+  ADD_FAILURE() << "Did not see evidence of caching";
+}
+
+void MetricsLibraryTest::VerifyEnabledCacheEviction(bool to_value) {
+  lib_.cached_enabled_time_ = 0;
+  EXPECT_CALL(*device_policy_, GetMetricsEnabled(_))
+      .WillOnce(SetMetricsPolicy(!to_value));
+  ASSERT_EQ(!to_value, lib_.AreMetricsEnabled());
+  EXPECT_CALL(*device_policy_, GetMetricsEnabled(_))
+      .WillOnce(SetMetricsPolicy(to_value));
+  ASSERT_LT(abs(static_cast<int>(time(nullptr) - lib_.cached_enabled_time_)),
+            5);
+  // Sleep one second (or cheat to be faster).
+  --lib_.cached_enabled_time_;
+  ASSERT_EQ(to_value, lib_.AreMetricsEnabled());
+}
+
+TEST_F(MetricsLibraryTest, AreMetricsEnabledCaching) {
+  VerifyEnabledCacheHit(false);
+  VerifyEnabledCacheHit(true);
+  VerifyEnabledCacheEviction(false);
+  VerifyEnabledCacheEviction(true);
+}
+
+class CMetricsLibraryTest : public testing::Test {
+ protected:
+  virtual void SetUp() {
+    lib_ = CMetricsLibraryNew();
+    MetricsLibrary& ml = *reinterpret_cast<MetricsLibrary*>(lib_);
+    EXPECT_TRUE(ml.uma_events_file_.empty());
+    CMetricsLibraryInit(lib_);
+    EXPECT_FALSE(ml.uma_events_file_.empty());
+    ml.uma_events_file_ = kTestUMAEventsFile.value();
+    EXPECT_EQ(0, WriteFile(kTestUMAEventsFile, "", 0));
+    device_policy_ = new policy::MockDevicePolicy();
+    EXPECT_CALL(*device_policy_, LoadPolicy())
+        .Times(AnyNumber())
+        .WillRepeatedly(Return(true));
+    EXPECT_CALL(*device_policy_, GetMetricsEnabled(_))
+        .Times(AnyNumber())
+        .WillRepeatedly(SetMetricsPolicy(true));
+    provider_ = new policy::PolicyProvider(device_policy_);
+    ml.SetPolicyProvider(provider_);
+    reinterpret_cast<MetricsLibrary*>(lib_)->cached_enabled_time_ = 0;
+  }
+
+  virtual void TearDown() {
+    CMetricsLibraryDelete(lib_);
+    base::DeleteFile(kTestUMAEventsFile, false);
+  }
+
+  CMetricsLibrary lib_;
+  policy::MockDevicePolicy* device_policy_;
+  policy::PolicyProvider* provider_;
+};
+
+TEST_F(CMetricsLibraryTest, AreMetricsEnabledFalse) {
+  EXPECT_CALL(*device_policy_, GetMetricsEnabled(_))
+      .WillOnce(SetMetricsPolicy(false));
+  EXPECT_FALSE(CMetricsLibraryAreMetricsEnabled(lib_));
+}
+
+TEST_F(CMetricsLibraryTest, AreMetricsEnabledTrue) {
+  EXPECT_TRUE(CMetricsLibraryAreMetricsEnabled(lib_));
+}
+
+int main(int argc, char** argv) {
+  testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}
diff --git a/metricsd/persistent_integer.cc b/metricsd/persistent_integer.cc
new file mode 100644
index 0000000..9fa5c1e
--- /dev/null
+++ b/metricsd/persistent_integer.cc
@@ -0,0 +1,108 @@
+/*
+ * 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 "persistent_integer.h"
+
+#include <fcntl.h>
+
+#include <base/logging.h>
+#include <base/posix/eintr_wrapper.h>
+
+#include "constants.h"
+#include "metrics/metrics_library.h"
+
+
+namespace chromeos_metrics {
+
+// Static class member instantiation.
+bool PersistentInteger::testing_ = false;
+
+PersistentInteger::PersistentInteger(const std::string& name) :
+      value_(0),
+      version_(kVersion),
+      name_(name),
+      synced_(false) {
+  if (testing_) {
+    backing_file_name_ = name_;
+  } else {
+    backing_file_name_ = metrics::kMetricsDirectory + name_;
+  }
+}
+
+PersistentInteger::~PersistentInteger() {}
+
+void PersistentInteger::Set(int64_t value) {
+  value_ = value;
+  Write();
+}
+
+int64_t PersistentInteger::Get() {
+  // If not synced, then read.  If the read fails, it's a good idea to write.
+  if (!synced_ && !Read())
+    Write();
+  return value_;
+}
+
+int64_t PersistentInteger::GetAndClear() {
+  int64_t v = Get();
+  Set(0);
+  return v;
+}
+
+void PersistentInteger::Add(int64_t x) {
+  Set(Get() + x);
+}
+
+void PersistentInteger::Write() {
+  int fd = HANDLE_EINTR(open(backing_file_name_.c_str(),
+                             O_WRONLY | O_CREAT | O_TRUNC,
+                             S_IWUSR | S_IRUSR | S_IRGRP | S_IROTH));
+  PCHECK(fd >= 0) << "cannot open " << backing_file_name_ << " for writing";
+  PCHECK((HANDLE_EINTR(write(fd, &version_, sizeof(version_))) ==
+          sizeof(version_)) &&
+         (HANDLE_EINTR(write(fd, &value_, sizeof(value_))) ==
+          sizeof(value_)))
+      << "cannot write to " << backing_file_name_;
+  close(fd);
+  synced_ = true;
+}
+
+bool PersistentInteger::Read() {
+  int fd = HANDLE_EINTR(open(backing_file_name_.c_str(), O_RDONLY));
+  if (fd < 0) {
+    PLOG(WARNING) << "cannot open " << backing_file_name_ << " for reading";
+    return false;
+  }
+  int32_t version;
+  int64_t value;
+  bool read_succeeded = false;
+  if (HANDLE_EINTR(read(fd, &version, sizeof(version))) == sizeof(version) &&
+      version == version_ &&
+      HANDLE_EINTR(read(fd, &value, sizeof(value))) == sizeof(value)) {
+    value_ = value;
+    read_succeeded = true;
+    synced_ = true;
+  }
+  close(fd);
+  return read_succeeded;
+}
+
+void PersistentInteger::SetTestingMode(bool testing) {
+  testing_ = testing;
+}
+
+
+}  // namespace chromeos_metrics
diff --git a/metricsd/persistent_integer.h b/metricsd/persistent_integer.h
new file mode 100644
index 0000000..fec001f
--- /dev/null
+++ b/metricsd/persistent_integer.h
@@ -0,0 +1,79 @@
+/*
+ * 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 METRICS_PERSISTENT_INTEGER_H_
+#define METRICS_PERSISTENT_INTEGER_H_
+
+#include <stdint.h>
+
+#include <string>
+
+namespace chromeos_metrics {
+
+// PersistentIntegers is a named 64-bit integer value backed by a file.
+// The in-memory value acts as a write-through cache of the file value.
+// If the backing file doesn't exist or has bad content, the value is 0.
+
+class PersistentInteger {
+ public:
+  explicit PersistentInteger(const std::string& name);
+
+  // Virtual only because of mock.
+  virtual ~PersistentInteger();
+
+  // Sets the value.  This writes through to the backing file.
+  void Set(int64_t v);
+
+  // Gets the value.  May sync from backing file first.
+  int64_t Get();
+
+  // Returns the name of the object.
+  std::string Name() { return name_; }
+
+  // Convenience function for Get() followed by Set(0).
+  int64_t GetAndClear();
+
+  // Convenience function for v = Get, Set(v + x).
+  // Virtual only because of mock.
+  virtual void Add(int64_t x);
+
+  // After calling with |testing| = true, changes some behavior for the purpose
+  // of testing.  For instance: instances created while testing use the current
+  // directory for the backing files.
+  static void SetTestingMode(bool testing);
+
+ private:
+  static const int kVersion = 1001;
+
+  // Writes |value_| to the backing file, creating it if necessary.
+  void Write();
+
+  // Reads the value from the backing file, stores it in |value_|, and returns
+  // true if the backing file is valid.  Returns false otherwise, and creates
+  // a valid backing file as a side effect.
+  bool Read();
+
+  int64_t value_;
+  int32_t version_;
+  std::string name_;
+  std::string backing_file_name_;
+  bool synced_;
+  static bool testing_;
+};
+
+}  // namespace chromeos_metrics
+
+#endif  // METRICS_PERSISTENT_INTEGER_H_
diff --git a/metricsd/persistent_integer_mock.h b/metricsd/persistent_integer_mock.h
new file mode 100644
index 0000000..acc5389
--- /dev/null
+++ b/metricsd/persistent_integer_mock.h
@@ -0,0 +1,37 @@
+/*
+ * 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 METRICS_PERSISTENT_INTEGER_MOCK_H_
+#define METRICS_PERSISTENT_INTEGER_MOCK_H_
+
+#include <string>
+
+#include <gmock/gmock.h>
+
+#include "persistent_integer.h"
+
+namespace chromeos_metrics {
+
+class PersistentIntegerMock : public PersistentInteger {
+ public:
+  explicit PersistentIntegerMock(const std::string& name)
+      : PersistentInteger(name) {}
+    MOCK_METHOD1(Add, void(int64_t count));
+};
+
+}  // namespace chromeos_metrics
+
+#endif  // METRICS_PERSISTENT_INTEGER_MOCK_H_
diff --git a/metricsd/persistent_integer_test.cc b/metricsd/persistent_integer_test.cc
new file mode 100644
index 0000000..19801f9
--- /dev/null
+++ b/metricsd/persistent_integer_test.cc
@@ -0,0 +1,78 @@
+/*
+ * 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 <gtest/gtest.h>
+
+#include <base/compiler_specific.h>
+#include <base/files/file_enumerator.h>
+#include <base/files/file_util.h>
+
+#include "persistent_integer.h"
+
+const char kBackingFileName[] = "1.pibakf";
+const char kBackingFilePattern[] = "*.pibakf";
+
+using chromeos_metrics::PersistentInteger;
+
+class PersistentIntegerTest : public testing::Test {
+  void SetUp() override {
+    // Set testing mode.
+    chromeos_metrics::PersistentInteger::SetTestingMode(true);
+  }
+
+  void TearDown() override {
+    // Remove backing files.  The convention is that they all end in ".pibakf".
+    base::FileEnumerator f_enum(base::FilePath("."),
+                                false,
+                                base::FileEnumerator::FILES,
+                                FILE_PATH_LITERAL(kBackingFilePattern));
+    for (base::FilePath name = f_enum.Next();
+         !name.empty();
+         name = f_enum.Next()) {
+      base::DeleteFile(name, false);
+    }
+  }
+};
+
+TEST_F(PersistentIntegerTest, BasicChecks) {
+  scoped_ptr<PersistentInteger> pi(new PersistentInteger(kBackingFileName));
+
+  // Test initialization.
+  EXPECT_EQ(0, pi->Get());
+  EXPECT_EQ(kBackingFileName, pi->Name());  // boring
+
+  // Test set and add.
+  pi->Set(2);
+  pi->Add(3);
+  EXPECT_EQ(5, pi->Get());
+
+  // Test persistence.
+  pi.reset(new PersistentInteger(kBackingFileName));
+  EXPECT_EQ(5, pi->Get());
+
+  // Test GetAndClear.
+  EXPECT_EQ(5, pi->GetAndClear());
+  EXPECT_EQ(pi->Get(), 0);
+
+  // Another persistence test.
+  pi.reset(new PersistentInteger(kBackingFileName));
+  EXPECT_EQ(0, pi->Get());
+}
+
+int main(int argc, char** argv) {
+  testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}
diff --git a/metricsd/serialization/metric_sample.cc b/metricsd/serialization/metric_sample.cc
new file mode 100644
index 0000000..76a47c0
--- /dev/null
+++ b/metricsd/serialization/metric_sample.cc
@@ -0,0 +1,209 @@
+/*
+ * 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 "serialization/metric_sample.h"
+
+#include <string>
+#include <vector>
+
+#include "base/logging.h"
+#include "base/strings/string_number_conversions.h"
+#include "base/strings/string_split.h"
+#include "base/strings/stringprintf.h"
+
+namespace metrics {
+
+MetricSample::MetricSample(MetricSample::SampleType sample_type,
+                           const std::string& metric_name,
+                           int sample,
+                           int min,
+                           int max,
+                           int bucket_count)
+    : type_(sample_type),
+      name_(metric_name),
+      sample_(sample),
+      min_(min),
+      max_(max),
+      bucket_count_(bucket_count) {
+}
+
+MetricSample::~MetricSample() {
+}
+
+bool MetricSample::IsValid() const {
+  return name().find(' ') == std::string::npos &&
+         name().find('\0') == std::string::npos && !name().empty();
+}
+
+std::string MetricSample::ToString() const {
+  if (type_ == CRASH) {
+    return base::StringPrintf("crash%c%s%c",
+                              '\0',
+                              name().c_str(),
+                              '\0');
+  } else if (type_ == SPARSE_HISTOGRAM) {
+    return base::StringPrintf("sparsehistogram%c%s %d%c",
+                              '\0',
+                              name().c_str(),
+                              sample_,
+                              '\0');
+  } else if (type_ == LINEAR_HISTOGRAM) {
+    return base::StringPrintf("linearhistogram%c%s %d %d%c",
+                              '\0',
+                              name().c_str(),
+                              sample_,
+                              max_,
+                              '\0');
+  } else if (type_ == HISTOGRAM) {
+    return base::StringPrintf("histogram%c%s %d %d %d %d%c",
+                              '\0',
+                              name().c_str(),
+                              sample_,
+                              min_,
+                              max_,
+                              bucket_count_,
+                              '\0');
+  } else {
+    // The type can only be USER_ACTION.
+    CHECK_EQ(type_, USER_ACTION);
+    return base::StringPrintf("useraction%c%s%c",
+                              '\0',
+                              name().c_str(),
+                              '\0');
+  }
+}
+
+int MetricSample::sample() const {
+  CHECK_NE(type_, USER_ACTION);
+  CHECK_NE(type_, CRASH);
+  return sample_;
+}
+
+int MetricSample::min() const {
+  CHECK_EQ(type_, HISTOGRAM);
+  return min_;
+}
+
+int MetricSample::max() const {
+  CHECK_NE(type_, CRASH);
+  CHECK_NE(type_, USER_ACTION);
+  CHECK_NE(type_, SPARSE_HISTOGRAM);
+  return max_;
+}
+
+int MetricSample::bucket_count() const {
+  CHECK_EQ(type_, HISTOGRAM);
+  return bucket_count_;
+}
+
+// static
+scoped_ptr<MetricSample> MetricSample::CrashSample(
+    const std::string& crash_name) {
+  return scoped_ptr<MetricSample>(
+      new MetricSample(CRASH, crash_name, 0, 0, 0, 0));
+}
+
+// static
+scoped_ptr<MetricSample> MetricSample::HistogramSample(
+    const std::string& histogram_name,
+    int sample,
+    int min,
+    int max,
+    int bucket_count) {
+  return scoped_ptr<MetricSample>(new MetricSample(
+      HISTOGRAM, histogram_name, sample, min, max, bucket_count));
+}
+
+// static
+scoped_ptr<MetricSample> MetricSample::ParseHistogram(
+    const std::string& serialized_histogram) {
+  std::vector<std::string> parts;
+  base::SplitString(serialized_histogram, ' ', &parts);
+
+  if (parts.size() != 5)
+    return scoped_ptr<MetricSample>();
+  int sample, min, max, bucket_count;
+  if (parts[0].empty() || !base::StringToInt(parts[1], &sample) ||
+      !base::StringToInt(parts[2], &min) ||
+      !base::StringToInt(parts[3], &max) ||
+      !base::StringToInt(parts[4], &bucket_count)) {
+    return scoped_ptr<MetricSample>();
+  }
+
+  return HistogramSample(parts[0], sample, min, max, bucket_count);
+}
+
+// static
+scoped_ptr<MetricSample> MetricSample::SparseHistogramSample(
+    const std::string& histogram_name,
+    int sample) {
+  return scoped_ptr<MetricSample>(
+      new MetricSample(SPARSE_HISTOGRAM, histogram_name, sample, 0, 0, 0));
+}
+
+// static
+scoped_ptr<MetricSample> MetricSample::ParseSparseHistogram(
+    const std::string& serialized_histogram) {
+  std::vector<std::string> parts;
+  base::SplitString(serialized_histogram, ' ', &parts);
+  if (parts.size() != 2)
+    return scoped_ptr<MetricSample>();
+  int sample;
+  if (parts[0].empty() || !base::StringToInt(parts[1], &sample))
+    return scoped_ptr<MetricSample>();
+
+  return SparseHistogramSample(parts[0], sample);
+}
+
+// static
+scoped_ptr<MetricSample> MetricSample::LinearHistogramSample(
+    const std::string& histogram_name,
+    int sample,
+    int max) {
+  return scoped_ptr<MetricSample>(
+      new MetricSample(LINEAR_HISTOGRAM, histogram_name, sample, 0, max, 0));
+}
+
+// static
+scoped_ptr<MetricSample> MetricSample::ParseLinearHistogram(
+    const std::string& serialized_histogram) {
+  std::vector<std::string> parts;
+  int sample, max;
+  base::SplitString(serialized_histogram, ' ', &parts);
+  if (parts.size() != 3)
+    return scoped_ptr<MetricSample>();
+  if (parts[0].empty() || !base::StringToInt(parts[1], &sample) ||
+      !base::StringToInt(parts[2], &max)) {
+    return scoped_ptr<MetricSample>();
+  }
+
+  return LinearHistogramSample(parts[0], sample, max);
+}
+
+// static
+scoped_ptr<MetricSample> MetricSample::UserActionSample(
+    const std::string& action_name) {
+  return scoped_ptr<MetricSample>(
+      new MetricSample(USER_ACTION, action_name, 0, 0, 0, 0));
+}
+
+bool MetricSample::IsEqual(const MetricSample& metric) {
+  return type_ == metric.type_ && name_ == metric.name_ &&
+         sample_ == metric.sample_ && min_ == metric.min_ &&
+         max_ == metric.max_ && bucket_count_ == metric.bucket_count_;
+}
+
+}  // namespace metrics
diff --git a/metricsd/serialization/metric_sample.h b/metricsd/serialization/metric_sample.h
new file mode 100644
index 0000000..5a4e4ae
--- /dev/null
+++ b/metricsd/serialization/metric_sample.h
@@ -0,0 +1,131 @@
+/*
+ * 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 METRICS_SERIALIZATION_METRIC_SAMPLE_H_
+#define METRICS_SERIALIZATION_METRIC_SAMPLE_H_
+
+#include <string>
+
+#include "base/gtest_prod_util.h"
+#include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
+
+namespace metrics {
+
+// This class is used by libmetrics (ChromeOS) to serialize
+// and deserialize measurements to send them to a metrics sending service.
+// It is meant to be a simple container with serialization functions.
+class MetricSample {
+ public:
+  // Types of metric sample used.
+  enum SampleType {
+    CRASH,
+    HISTOGRAM,
+    LINEAR_HISTOGRAM,
+    SPARSE_HISTOGRAM,
+    USER_ACTION
+  };
+
+  ~MetricSample();
+
+  // Returns true if the sample is valid (can be serialized without ambiguity).
+  //
+  // This function should be used to filter bad samples before serializing them.
+  bool IsValid() const;
+
+  // Getters for type and name. All types of metrics have these so we do not
+  // need to check the type.
+  SampleType type() const { return type_; }
+  const std::string& name() const { return name_; }
+
+  // Getters for sample, min, max, bucket_count.
+  // Check the metric type to make sure the request make sense. (ex: a crash
+  // sample does not have a bucket_count so we crash if we call bucket_count()
+  // on it.)
+  int sample() const;
+  int min() const;
+  int max() const;
+  int bucket_count() const;
+
+  // Returns a serialized version of the sample.
+  //
+  // The serialized message for each type is:
+  // crash: crash\0|name_|\0
+  // user action: useraction\0|name_|\0
+  // histogram: histogram\0|name_| |sample_| |min_| |max_| |bucket_count_|\0
+  // sparsehistogram: sparsehistogram\0|name_| |sample_|\0
+  // linearhistogram: linearhistogram\0|name_| |sample_| |max_|\0
+  std::string ToString() const;
+
+  // Builds a crash sample.
+  static scoped_ptr<MetricSample> CrashSample(const std::string& crash_name);
+
+  // Builds a histogram sample.
+  static scoped_ptr<MetricSample> HistogramSample(
+      const std::string& histogram_name,
+      int sample,
+      int min,
+      int max,
+      int bucket_count);
+  // Deserializes a histogram sample.
+  static scoped_ptr<MetricSample> ParseHistogram(const std::string& serialized);
+
+  // Builds a sparse histogram sample.
+  static scoped_ptr<MetricSample> SparseHistogramSample(
+      const std::string& histogram_name,
+      int sample);
+  // Deserializes a sparse histogram sample.
+  static scoped_ptr<MetricSample> ParseSparseHistogram(
+      const std::string& serialized);
+
+  // Builds a linear histogram sample.
+  static scoped_ptr<MetricSample> LinearHistogramSample(
+      const std::string& histogram_name,
+      int sample,
+      int max);
+  // Deserializes a linear histogram sample.
+  static scoped_ptr<MetricSample> ParseLinearHistogram(
+      const std::string& serialized);
+
+  // Builds a user action sample.
+  static scoped_ptr<MetricSample> UserActionSample(
+      const std::string& action_name);
+
+  // Returns true if sample and this object represent the same sample (type,
+  // name, sample, min, max, bucket_count match).
+  bool IsEqual(const MetricSample& sample);
+
+ private:
+  MetricSample(SampleType sample_type,
+               const std::string& metric_name,
+               const int sample,
+               const int min,
+               const int max,
+               const int bucket_count);
+
+  const SampleType type_;
+  const std::string name_;
+  const int sample_;
+  const int min_;
+  const int max_;
+  const int bucket_count_;
+
+  DISALLOW_COPY_AND_ASSIGN(MetricSample);
+};
+
+}  // namespace metrics
+
+#endif  // METRICS_SERIALIZATION_METRIC_SAMPLE_H_
diff --git a/metricsd/serialization/serialization_utils.cc b/metricsd/serialization/serialization_utils.cc
new file mode 100644
index 0000000..6dd8258
--- /dev/null
+++ b/metricsd/serialization/serialization_utils.cc
@@ -0,0 +1,233 @@
+/*
+ * 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 "serialization/serialization_utils.h"
+
+#include <sys/file.h>
+
+#include <string>
+#include <vector>
+
+#include "base/files/file_path.h"
+#include "base/files/file_util.h"
+#include "base/files/scoped_file.h"
+#include "base/logging.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/scoped_vector.h"
+#include "base/strings/string_split.h"
+#include "base/strings/string_util.h"
+#include "serialization/metric_sample.h"
+
+#define READ_WRITE_ALL_FILE_FLAGS \
+  (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH)
+
+namespace metrics {
+namespace {
+
+// Reads the next message from |file_descriptor| into |message|.
+//
+// |message| will be set to the empty string if no message could be read (EOF)
+// or the message was badly constructed.
+//
+// Returns false if no message can be read from this file anymore (EOF or
+// unrecoverable error).
+bool ReadMessage(int fd, std::string* message) {
+  CHECK(message);
+
+  int result;
+  int32_t message_size;
+  const int32_t message_hdr_size = sizeof(message_size);
+  // The file containing the metrics do not leave the device so the writer and
+  // the reader will always have the same endianness.
+  result = HANDLE_EINTR(read(fd, &message_size, sizeof(message_size)));
+  if (result < 0) {
+    DPLOG(ERROR) << "reading metrics message header";
+    return false;
+  }
+  if (result == 0) {
+    // This indicates a normal EOF.
+    return false;
+  }
+  if (result < message_hdr_size) {
+    DLOG(ERROR) << "bad read size " << result << ", expecting "
+                << sizeof(message_size);
+    return false;
+  }
+
+  // kMessageMaxLength applies to the entire message: the 4-byte
+  // length field and the content.
+  if (message_size > SerializationUtils::kMessageMaxLength) {
+    DLOG(ERROR) << "message too long : " << message_size;
+    if (HANDLE_EINTR(lseek(fd, message_size - 4, SEEK_CUR)) == -1) {
+      DLOG(ERROR) << "error while skipping message. abort";
+      return false;
+    }
+    // Badly formatted message was skipped. Treat the badly formatted sample as
+    // an empty sample.
+    message->clear();
+    return true;
+  }
+
+  if (message_size < message_hdr_size) {
+    DLOG(ERROR) << "message too short : " << message_size;
+    return false;
+  }
+
+  message_size -= message_hdr_size;  // The message size includes itself.
+  char buffer[SerializationUtils::kMessageMaxLength];
+  if (!base::ReadFromFD(fd, buffer, message_size)) {
+    DPLOG(ERROR) << "reading metrics message body";
+    return false;
+  }
+  *message = std::string(buffer, message_size);
+  return true;
+}
+
+}  // namespace
+
+scoped_ptr<MetricSample> SerializationUtils::ParseSample(
+    const std::string& sample) {
+  if (sample.empty())
+    return scoped_ptr<MetricSample>();
+
+  std::vector<std::string> parts;
+  base::SplitString(sample, '\0', &parts);
+  // We should have two null terminated strings so split should produce
+  // three chunks.
+  if (parts.size() != 3) {
+    DLOG(ERROR) << "splitting message on \\0 produced " << parts.size()
+                << " parts (expected 3)";
+    return scoped_ptr<MetricSample>();
+  }
+  const std::string& name = parts[0];
+  const std::string& value = parts[1];
+
+  if (base::LowerCaseEqualsASCII(name, "crash")) {
+    return MetricSample::CrashSample(value);
+  } else if (base::LowerCaseEqualsASCII(name, "histogram")) {
+    return MetricSample::ParseHistogram(value);
+  } else if (base::LowerCaseEqualsASCII(name, "linearhistogram")) {
+    return MetricSample::ParseLinearHistogram(value);
+  } else if (base::LowerCaseEqualsASCII(name, "sparsehistogram")) {
+    return MetricSample::ParseSparseHistogram(value);
+  } else if (base::LowerCaseEqualsASCII(name, "useraction")) {
+    return MetricSample::UserActionSample(value);
+  } else {
+    DLOG(ERROR) << "invalid event type: " << name << ", value: " << value;
+  }
+  return scoped_ptr<MetricSample>();
+}
+
+void SerializationUtils::ReadAndTruncateMetricsFromFile(
+    const std::string& filename,
+    ScopedVector<MetricSample>* metrics) {
+  struct stat stat_buf;
+  int result;
+
+  result = stat(filename.c_str(), &stat_buf);
+  if (result < 0) {
+    if (errno != ENOENT)
+      DPLOG(ERROR) << filename << ": bad metrics file stat";
+
+    // Nothing to collect---try later.
+    return;
+  }
+  if (stat_buf.st_size == 0) {
+    // Also nothing to collect.
+    return;
+  }
+  base::ScopedFD fd(open(filename.c_str(), O_RDWR));
+  if (fd.get() < 0) {
+    DPLOG(ERROR) << filename << ": cannot open";
+    return;
+  }
+  result = flock(fd.get(), LOCK_EX);
+  if (result < 0) {
+    DPLOG(ERROR) << filename << ": cannot lock";
+    return;
+  }
+
+  // This processes all messages in the log. When all messages are
+  // read and processed, or an error occurs, truncate the file to zero size.
+  for (;;) {
+    std::string message;
+
+    if (!ReadMessage(fd.get(), &message))
+      break;
+
+    scoped_ptr<MetricSample> sample = ParseSample(message);
+    if (sample)
+      metrics->push_back(sample.release());
+  }
+
+  result = ftruncate(fd.get(), 0);
+  if (result < 0)
+    DPLOG(ERROR) << "truncate metrics log";
+
+  result = flock(fd.get(), LOCK_UN);
+  if (result < 0)
+    DPLOG(ERROR) << "unlock metrics log";
+}
+
+bool SerializationUtils::WriteMetricToFile(const MetricSample& sample,
+                                           const std::string& filename) {
+  if (!sample.IsValid())
+    return false;
+
+  base::ScopedFD file_descriptor(open(filename.c_str(),
+                                      O_WRONLY | O_APPEND | O_CREAT,
+                                      READ_WRITE_ALL_FILE_FLAGS));
+
+  if (file_descriptor.get() < 0) {
+    DPLOG(ERROR) << filename << ": cannot open";
+    return false;
+  }
+
+  fchmod(file_descriptor.get(), READ_WRITE_ALL_FILE_FLAGS);
+  // Grab a lock to avoid chrome truncating the file
+  // underneath us. Keep the file locked as briefly as possible.
+  // Freeing file_descriptor will close the file and and remove the lock.
+  if (HANDLE_EINTR(flock(file_descriptor.get(), LOCK_EX)) < 0) {
+    DPLOG(ERROR) << filename << ": cannot lock";
+    return false;
+  }
+
+  std::string msg = sample.ToString();
+  int32 size = msg.length() + sizeof(int32);
+  if (size > kMessageMaxLength) {
+    DLOG(ERROR) << "cannot write message: too long";
+    return false;
+  }
+
+  // The file containing the metrics samples will only be read by programs on
+  // the same device so we do not check endianness.
+  if (!base::WriteFileDescriptor(file_descriptor.get(),
+                                 reinterpret_cast<char*>(&size),
+                                 sizeof(size))) {
+    DPLOG(ERROR) << "error writing message length";
+    return false;
+  }
+
+  if (!base::WriteFileDescriptor(
+          file_descriptor.get(), msg.c_str(), msg.size())) {
+    DPLOG(ERROR) << "error writing message";
+    return false;
+  }
+
+  return true;
+}
+
+}  // namespace metrics
diff --git a/metricsd/serialization/serialization_utils.h b/metricsd/serialization/serialization_utils.h
new file mode 100644
index 0000000..67d4675
--- /dev/null
+++ b/metricsd/serialization/serialization_utils.h
@@ -0,0 +1,60 @@
+/*
+ * 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 METRICS_SERIALIZATION_SERIALIZATION_UTILS_H_
+#define METRICS_SERIALIZATION_SERIALIZATION_UTILS_H_
+
+#include <string>
+
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/scoped_vector.h"
+
+namespace metrics {
+
+class MetricSample;
+
+// Metrics helpers to serialize and deserialize metrics collected by
+// ChromeOS.
+namespace SerializationUtils {
+
+// Deserializes a sample passed as a string and return a sample.
+// The return value will either be a scoped_ptr to a Metric sample (if the
+// deserialization was successful) or a NULL scoped_ptr.
+scoped_ptr<MetricSample> ParseSample(const std::string& sample);
+
+// Reads all samples from a file and truncate the file when done.
+void ReadAndTruncateMetricsFromFile(const std::string& filename,
+                                    ScopedVector<MetricSample>* metrics);
+
+// Serializes a sample and write it to filename.
+// The format for the message is:
+//  message_size, serialized_message
+// where
+//  * message_size is the total length of the message (message_size +
+//    serialized_message) on 4 bytes
+//  * serialized_message is the serialized version of sample (using ToString)
+//
+//  NB: the file will never leave the device so message_size will be written
+//  with the architecture's endianness.
+bool WriteMetricToFile(const MetricSample& sample, const std::string& filename);
+
+// Maximum length of a serialized message
+static const int kMessageMaxLength = 1024;
+
+}  // namespace SerializationUtils
+}  // namespace metrics
+
+#endif  // METRICS_SERIALIZATION_SERIALIZATION_UTILS_H_
diff --git a/metricsd/serialization/serialization_utils_unittest.cc b/metricsd/serialization/serialization_utils_unittest.cc
new file mode 100644
index 0000000..7a572de
--- /dev/null
+++ b/metricsd/serialization/serialization_utils_unittest.cc
@@ -0,0 +1,181 @@
+/*
+ * 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 "serialization/serialization_utils.h"
+
+#include <base/files/file_util.h>
+#include <base/files/scoped_temp_dir.h>
+#include <base/logging.h>
+#include <base/strings/stringprintf.h>
+#include <gtest/gtest.h>
+
+#include "serialization/metric_sample.h"
+
+namespace metrics {
+namespace {
+
+class SerializationUtilsTest : public testing::Test {
+ protected:
+  SerializationUtilsTest() {
+    bool success = temporary_dir.CreateUniqueTempDir();
+    if (success) {
+      base::FilePath dir_path = temporary_dir.path();
+      filename = dir_path.value() + "chromeossampletest";
+      filepath = base::FilePath(filename);
+    }
+  }
+
+  void SetUp() override { base::DeleteFile(filepath, false); }
+
+  void TestSerialization(MetricSample* sample) {
+    std::string serialized(sample->ToString());
+    ASSERT_EQ('\0', serialized[serialized.length() - 1]);
+    scoped_ptr<MetricSample> deserialized =
+        SerializationUtils::ParseSample(serialized);
+    ASSERT_TRUE(deserialized);
+    EXPECT_TRUE(sample->IsEqual(*deserialized.get()));
+  }
+
+  std::string filename;
+  base::ScopedTempDir temporary_dir;
+  base::FilePath filepath;
+};
+
+TEST_F(SerializationUtilsTest, CrashSerializeTest) {
+  TestSerialization(MetricSample::CrashSample("test").get());
+}
+
+TEST_F(SerializationUtilsTest, HistogramSerializeTest) {
+  TestSerialization(
+      MetricSample::HistogramSample("myhist", 13, 1, 100, 10).get());
+}
+
+TEST_F(SerializationUtilsTest, LinearSerializeTest) {
+  TestSerialization(
+      MetricSample::LinearHistogramSample("linearhist", 12, 30).get());
+}
+
+TEST_F(SerializationUtilsTest, SparseSerializeTest) {
+  TestSerialization(MetricSample::SparseHistogramSample("mysparse", 30).get());
+}
+
+TEST_F(SerializationUtilsTest, UserActionSerializeTest) {
+  TestSerialization(MetricSample::UserActionSample("myaction").get());
+}
+
+TEST_F(SerializationUtilsTest, IllegalNameAreFilteredTest) {
+  scoped_ptr<MetricSample> sample1 =
+      MetricSample::SparseHistogramSample("no space", 10);
+  scoped_ptr<MetricSample> sample2 = MetricSample::LinearHistogramSample(
+      base::StringPrintf("here%cbhe", '\0'), 1, 3);
+
+  EXPECT_FALSE(SerializationUtils::WriteMetricToFile(*sample1.get(), filename));
+  EXPECT_FALSE(SerializationUtils::WriteMetricToFile(*sample2.get(), filename));
+  int64 size = 0;
+
+  ASSERT_TRUE(!PathExists(filepath) || base::GetFileSize(filepath, &size));
+
+  EXPECT_EQ(0, size);
+}
+
+TEST_F(SerializationUtilsTest, BadInputIsCaughtTest) {
+  std::string input(
+      base::StringPrintf("sparsehistogram%cname foo%c", '\0', '\0'));
+  EXPECT_EQ(NULL, MetricSample::ParseSparseHistogram(input).get());
+}
+
+TEST_F(SerializationUtilsTest, MessageSeparatedByZero) {
+  scoped_ptr<MetricSample> crash = MetricSample::CrashSample("mycrash");
+
+  SerializationUtils::WriteMetricToFile(*crash.get(), filename);
+  int64 size = 0;
+  ASSERT_TRUE(base::GetFileSize(filepath, &size));
+  // 4 bytes for the size
+  // 5 bytes for crash
+  // 7 bytes for mycrash
+  // 2 bytes for the \0
+  // -> total of 18
+  EXPECT_EQ(size, 18);
+}
+
+TEST_F(SerializationUtilsTest, MessagesTooLongAreDiscardedTest) {
+  // Creates a message that is bigger than the maximum allowed size.
+  // As we are adding extra character (crash, \0s, etc), if the name is
+  // kMessageMaxLength long, it will be too long.
+  std::string name(SerializationUtils::kMessageMaxLength, 'c');
+
+  scoped_ptr<MetricSample> crash = MetricSample::CrashSample(name);
+  EXPECT_FALSE(SerializationUtils::WriteMetricToFile(*crash.get(), filename));
+  int64 size = 0;
+  ASSERT_TRUE(base::GetFileSize(filepath, &size));
+  EXPECT_EQ(0, size);
+}
+
+TEST_F(SerializationUtilsTest, ReadLongMessageTest) {
+  base::File test_file(filepath,
+                       base::File::FLAG_OPEN_ALWAYS | base::File::FLAG_APPEND);
+  std::string message(SerializationUtils::kMessageMaxLength + 1, 'c');
+
+  int32 message_size = message.length() + sizeof(int32);
+  test_file.WriteAtCurrentPos(reinterpret_cast<const char*>(&message_size),
+                              sizeof(message_size));
+  test_file.WriteAtCurrentPos(message.c_str(), message.length());
+  test_file.Close();
+
+  scoped_ptr<MetricSample> crash = MetricSample::CrashSample("test");
+  SerializationUtils::WriteMetricToFile(*crash.get(), filename);
+
+  ScopedVector<MetricSample> samples;
+  SerializationUtils::ReadAndTruncateMetricsFromFile(filename, &samples);
+  ASSERT_EQ(size_t(1), samples.size());
+  ASSERT_TRUE(samples[0] != NULL);
+  EXPECT_TRUE(crash->IsEqual(*samples[0]));
+}
+
+TEST_F(SerializationUtilsTest, WriteReadTest) {
+  scoped_ptr<MetricSample> hist =
+      MetricSample::HistogramSample("myhist", 1, 2, 3, 4);
+  scoped_ptr<MetricSample> crash = MetricSample::CrashSample("mycrash");
+  scoped_ptr<MetricSample> lhist =
+      MetricSample::LinearHistogramSample("linear", 1, 10);
+  scoped_ptr<MetricSample> shist =
+      MetricSample::SparseHistogramSample("mysparse", 30);
+  scoped_ptr<MetricSample> action = MetricSample::UserActionSample("myaction");
+
+  SerializationUtils::WriteMetricToFile(*hist.get(), filename);
+  SerializationUtils::WriteMetricToFile(*crash.get(), filename);
+  SerializationUtils::WriteMetricToFile(*lhist.get(), filename);
+  SerializationUtils::WriteMetricToFile(*shist.get(), filename);
+  SerializationUtils::WriteMetricToFile(*action.get(), filename);
+  ScopedVector<MetricSample> vect;
+  SerializationUtils::ReadAndTruncateMetricsFromFile(filename, &vect);
+  ASSERT_EQ(vect.size(), size_t(5));
+  for (int i = 0; i < 5; i++) {
+    ASSERT_TRUE(vect[0] != NULL);
+  }
+  EXPECT_TRUE(hist->IsEqual(*vect[0]));
+  EXPECT_TRUE(crash->IsEqual(*vect[1]));
+  EXPECT_TRUE(lhist->IsEqual(*vect[2]));
+  EXPECT_TRUE(shist->IsEqual(*vect[3]));
+  EXPECT_TRUE(action->IsEqual(*vect[4]));
+
+  int64 size = 0;
+  ASSERT_TRUE(base::GetFileSize(filepath, &size));
+  ASSERT_EQ(0, size);
+}
+
+}  // namespace
+}  // namespace metrics
diff --git a/metricsd/timer.cc b/metricsd/timer.cc
new file mode 100644
index 0000000..7b00cc0
--- /dev/null
+++ b/metricsd/timer.cc
@@ -0,0 +1,120 @@
+/*
+ * 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 "timer.h"
+
+#include <string>
+
+#include <base/memory/scoped_ptr.h>
+
+#include "metrics/metrics_library.h"
+
+namespace chromeos_metrics {
+
+base::TimeTicks ClockWrapper::GetCurrentTime() const {
+  return base::TimeTicks::Now();
+}
+
+Timer::Timer()
+    : timer_state_(kTimerStopped),
+      clock_wrapper_(new ClockWrapper()) {}
+
+bool Timer::Start() {
+  elapsed_time_ = base::TimeDelta();  // Sets elapsed_time_ to zero.
+  start_time_ = clock_wrapper_->GetCurrentTime();
+  timer_state_ = kTimerRunning;
+  return true;
+}
+
+bool Timer::Stop() {
+  if (timer_state_ == kTimerStopped)
+    return false;
+  if (timer_state_ == kTimerRunning)
+    elapsed_time_ += clock_wrapper_->GetCurrentTime() - start_time_;
+  timer_state_ = kTimerStopped;
+  return true;
+}
+
+bool Timer::Pause() {
+  switch (timer_state_) {
+    case kTimerStopped:
+      if (!Start())
+        return false;
+      timer_state_ = kTimerPaused;
+      return true;
+    case kTimerRunning:
+      timer_state_ = kTimerPaused;
+      elapsed_time_ += clock_wrapper_->GetCurrentTime() - start_time_;
+      return true;
+    default:
+      return false;
+  }
+}
+
+bool Timer::Resume() {
+  switch (timer_state_) {
+    case kTimerStopped:
+      return Start();
+    case kTimerPaused:
+      start_time_ = clock_wrapper_->GetCurrentTime();
+      timer_state_ = kTimerRunning;
+      return true;
+    default:
+      return false;
+  }
+}
+
+bool Timer::Reset() {
+  elapsed_time_ = base::TimeDelta();  // Sets elapsed_time_ to zero.
+  timer_state_ = kTimerStopped;
+  return true;
+}
+
+bool Timer::HasStarted() const {
+  return timer_state_ != kTimerStopped;
+}
+
+bool Timer::GetElapsedTime(base::TimeDelta* elapsed_time) const {
+  if (start_time_.is_null() || !elapsed_time)
+    return false;
+  *elapsed_time = elapsed_time_;
+  if (timer_state_ == kTimerRunning) {
+    *elapsed_time += clock_wrapper_->GetCurrentTime() - start_time_;
+  }
+  return true;
+}
+
+// static
+MetricsLibraryInterface* TimerReporter::metrics_lib_ = nullptr;
+
+TimerReporter::TimerReporter(const std::string& histogram_name, int min,
+                             int max, int num_buckets)
+    : histogram_name_(histogram_name),
+      min_(min),
+      max_(max),
+      num_buckets_(num_buckets) {}
+
+bool TimerReporter::ReportMilliseconds() const {
+  base::TimeDelta elapsed_time;
+  if (!metrics_lib_ || !GetElapsedTime(&elapsed_time)) return false;
+  return metrics_lib_->SendToUMA(histogram_name_,
+                                 elapsed_time.InMilliseconds(),
+                                 min_,
+                                 max_,
+                                 num_buckets_);
+}
+
+}  // namespace chromeos_metrics
diff --git a/metricsd/timer.h b/metricsd/timer.h
new file mode 100644
index 0000000..b36ffff
--- /dev/null
+++ b/metricsd/timer.h
@@ -0,0 +1,170 @@
+/*
+ * 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.
+ */
+
+// Timer - class that provides timer tracking.
+
+#ifndef METRICS_TIMER_H_
+#define METRICS_TIMER_H_
+
+#include <string>
+
+#include <base/macros.h>
+#include <base/memory/scoped_ptr.h>
+#include <base/time/time.h>
+#include <gtest/gtest_prod.h>  // for FRIEND_TEST
+
+class MetricsLibraryInterface;
+
+namespace chromeos_metrics {
+
+class TimerInterface {
+ public:
+  virtual ~TimerInterface() {}
+
+  virtual bool Start() = 0;
+  virtual bool Stop() = 0;
+  virtual bool Reset() = 0;
+  virtual bool HasStarted() const = 0;
+};
+
+// Wrapper for calls to the system clock.
+class ClockWrapper {
+ public:
+  ClockWrapper() {}
+  virtual ~ClockWrapper() {}
+
+  // Returns the current time from the system.
+  virtual base::TimeTicks GetCurrentTime() const;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ClockWrapper);
+};
+
+// Implements a Timer.
+class Timer : public TimerInterface {
+ public:
+  Timer();
+  virtual ~Timer() {}
+
+  // Starts the timer. If a timer is already running, also resets current
+  // timer. Always returns true.
+  virtual bool Start();
+
+  // Stops the timer and calculates the total time elapsed between now and when
+  // Start() was called. Note that this method needs a prior call to Start().
+  // Otherwise, it fails (returns false).
+  virtual bool Stop();
+
+  // Pauses a timer.  If the timer is stopped, this call starts the timer in
+  // the paused state. Fails (returns false) if the timer is already paused.
+  virtual bool Pause();
+
+  // Restarts a paused timer (or starts a stopped timer). This method fails
+  // (returns false) if the timer is already running; otherwise, returns true.
+  virtual bool Resume();
+
+  // Resets the timer, erasing the current duration being tracked. Always
+  // returns true.
+  virtual bool Reset();
+
+  // Returns whether the timer has started or not.
+  virtual bool HasStarted() const;
+
+  // Stores the current elapsed time in |elapsed_time|. If timer is stopped,
+  // stores the elapsed time from when Stop() was last called. Otherwise,
+  // calculates and stores the elapsed time since the last Start().
+  // Returns false if the timer was never Start()'ed or if called with a null
+  // pointer argument.
+  virtual bool GetElapsedTime(base::TimeDelta* elapsed_time) const;
+
+ private:
+  enum TimerState { kTimerStopped, kTimerRunning, kTimerPaused };
+  friend class TimerTest;
+  friend class TimerReporterTest;
+  FRIEND_TEST(TimerReporterTest, StartStopReport);
+  FRIEND_TEST(TimerTest, InvalidElapsedTime);
+  FRIEND_TEST(TimerTest, InvalidStop);
+  FRIEND_TEST(TimerTest, PauseResumeStop);
+  FRIEND_TEST(TimerTest, PauseStartStopResume);
+  FRIEND_TEST(TimerTest, PauseStop);
+  FRIEND_TEST(TimerTest, Reset);
+  FRIEND_TEST(TimerTest, ReStart);
+  FRIEND_TEST(TimerTest, ResumeStartStopPause);
+  FRIEND_TEST(TimerTest, SeparatedTimers);
+  FRIEND_TEST(TimerTest, StartPauseResumePauseResumeStop);
+  FRIEND_TEST(TimerTest, StartPauseResumePauseStop);
+  FRIEND_TEST(TimerTest, StartPauseResumeStop);
+  FRIEND_TEST(TimerTest, StartPauseStop);
+  FRIEND_TEST(TimerTest, StartResumeStop);
+  FRIEND_TEST(TimerTest, StartStop);
+
+  // Elapsed time of the last use of the timer.
+  base::TimeDelta elapsed_time_;
+
+  // Starting time value.
+  base::TimeTicks start_time_;
+
+  // Whether the timer is running, stopped, or paused.
+  TimerState timer_state_;
+
+  // Wrapper for the calls to the system clock.
+  scoped_ptr<ClockWrapper> clock_wrapper_;
+
+  DISALLOW_COPY_AND_ASSIGN(Timer);
+};
+
+// Extends the Timer class to report the elapsed time in milliseconds through
+// the UMA metrics library.
+class TimerReporter : public Timer {
+ public:
+  // Initializes the timer by providing a |histogram_name| to report to with
+  // |min|, |max| and |num_buckets| attributes for the histogram.
+  TimerReporter(const std::string& histogram_name, int min, int max,
+                int num_buckets);
+  virtual ~TimerReporter() {}
+
+  // Sets the metrics library used by all instances of this class.
+  static void set_metrics_lib(MetricsLibraryInterface* metrics_lib) {
+    metrics_lib_ = metrics_lib;
+  }
+
+  // Reports the current duration to UMA, in milliseconds. Returns false if
+  // there is nothing to report, e.g. a metrics library is not set.
+  virtual bool ReportMilliseconds() const;
+
+  // Accessor methods.
+  const std::string& histogram_name() const { return histogram_name_; }
+  int min() const { return min_; }
+  int max() const { return max_; }
+  int num_buckets() const { return num_buckets_; }
+
+ private:
+  friend class TimerReporterTest;
+  FRIEND_TEST(TimerReporterTest, StartStopReport);
+  FRIEND_TEST(TimerReporterTest, InvalidReport);
+
+  static MetricsLibraryInterface* metrics_lib_;
+  std::string histogram_name_;
+  int min_;
+  int max_;
+  int num_buckets_;
+
+  DISALLOW_COPY_AND_ASSIGN(TimerReporter);
+};
+
+}  // namespace chromeos_metrics
+
+#endif  // METRICS_TIMER_H_
diff --git a/metricsd/timer_mock.h b/metricsd/timer_mock.h
new file mode 100644
index 0000000..8c9e8d8
--- /dev/null
+++ b/metricsd/timer_mock.h
@@ -0,0 +1,59 @@
+/*
+ * 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 METRICS_TIMER_MOCK_H_
+#define METRICS_TIMER_MOCK_H_
+
+#include <string>
+
+#include <gmock/gmock.h>
+
+#include "timer.h"
+
+namespace chromeos_metrics {
+
+class TimerMock : public Timer {
+ public:
+  MOCK_METHOD0(Start, bool());
+  MOCK_METHOD0(Stop, bool());
+  MOCK_METHOD0(Reset, bool());
+  MOCK_CONST_METHOD0(HasStarted, bool());
+  MOCK_CONST_METHOD1(GetElapsedTime, bool(base::TimeDelta* elapsed_time));
+};
+
+class TimerReporterMock : public TimerReporter {
+ public:
+  TimerReporterMock() : TimerReporter("", 0, 0, 0) {}
+  MOCK_METHOD0(Start, bool());
+  MOCK_METHOD0(Stop, bool());
+  MOCK_METHOD0(Reset, bool());
+  MOCK_CONST_METHOD0(HasStarted, bool());
+  MOCK_CONST_METHOD1(GetElapsedTime, bool(base::TimeDelta* elapsed_time));
+  MOCK_CONST_METHOD0(ReportMilliseconds, bool());
+  MOCK_CONST_METHOD0(histogram_name, std::string&());
+  MOCK_CONST_METHOD0(min, int());
+  MOCK_CONST_METHOD0(max, int());
+  MOCK_CONST_METHOD0(num_buckets, int());
+};
+
+class ClockWrapperMock : public ClockWrapper {
+ public:
+  MOCK_CONST_METHOD0(GetCurrentTime, base::TimeTicks());
+};
+
+}  // namespace chromeos_metrics
+
+#endif  // METRICS_TIMER_MOCK_H_
diff --git a/metricsd/timer_test.cc b/metricsd/timer_test.cc
new file mode 100644
index 0000000..ab027d4
--- /dev/null
+++ b/metricsd/timer_test.cc
@@ -0,0 +1,464 @@
+/*
+ * 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 <stdint.h>
+
+#include <base/memory/scoped_ptr.h>
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+
+#include "metrics_library_mock.h"
+#include "timer.h"
+#include "timer_mock.h"
+
+using ::testing::_;
+using ::testing::Return;
+
+namespace chromeos_metrics {
+
+namespace {
+const int64_t kStime1MSec = 1400;
+const int64_t kEtime1MSec = 3000;
+const int64_t kDelta1MSec = 1600;
+
+const int64_t kStime2MSec = 4200;
+const int64_t kEtime2MSec = 5000;
+const int64_t kDelta2MSec = 800;
+
+const int64_t kStime3MSec = 6600;
+const int64_t kEtime3MSec = 6800;
+const int64_t kDelta3MSec = 200;
+}  // namespace
+
+class TimerTest : public testing::Test {
+ public:
+  TimerTest() : clock_wrapper_mock_(new ClockWrapperMock()) {}
+
+ protected:
+  virtual void SetUp() {
+    EXPECT_EQ(Timer::kTimerStopped, timer_.timer_state_);
+    stime += base::TimeDelta::FromMilliseconds(kStime1MSec);
+    etime += base::TimeDelta::FromMilliseconds(kEtime1MSec);
+    stime2 += base::TimeDelta::FromMilliseconds(kStime2MSec);
+    etime2 += base::TimeDelta::FromMilliseconds(kEtime2MSec);
+    stime3 += base::TimeDelta::FromMilliseconds(kStime3MSec);
+    etime3 += base::TimeDelta::FromMilliseconds(kEtime3MSec);
+  }
+
+  virtual void TearDown() {}
+
+  Timer timer_;
+  scoped_ptr<ClockWrapperMock> clock_wrapper_mock_;
+  base::TimeTicks stime, etime, stime2, etime2, stime3, etime3;
+};
+
+TEST_F(TimerTest, StartStop) {
+  EXPECT_CALL(*clock_wrapper_mock_, GetCurrentTime())
+      .WillOnce(Return(stime))
+      .WillOnce(Return(etime));
+  timer_.clock_wrapper_.reset(clock_wrapper_mock_.release());
+  ASSERT_TRUE(timer_.Start());
+  ASSERT_TRUE(timer_.start_time_ == stime);
+  ASSERT_TRUE(timer_.HasStarted());
+  ASSERT_TRUE(timer_.Stop());
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(), kDelta1MSec);
+
+  base::TimeDelta elapsed_time;
+  ASSERT_TRUE(timer_.GetElapsedTime(&elapsed_time));
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(),
+            elapsed_time.InMilliseconds());
+
+  ASSERT_FALSE(timer_.HasStarted());
+}
+
+TEST_F(TimerTest, ReStart) {
+  EXPECT_CALL(*clock_wrapper_mock_, GetCurrentTime())
+      .WillOnce(Return(stime))
+      .WillOnce(Return(etime));
+  timer_.clock_wrapper_.reset(clock_wrapper_mock_.release());
+  timer_.Start();
+  base::TimeTicks buffer = timer_.start_time_;
+  timer_.Start();
+  ASSERT_FALSE(timer_.start_time_ == buffer);
+}
+
+TEST_F(TimerTest, Reset) {
+  EXPECT_CALL(*clock_wrapper_mock_, GetCurrentTime())
+      .WillOnce(Return(stime));
+  timer_.clock_wrapper_.reset(clock_wrapper_mock_.release());
+  timer_.Start();
+  ASSERT_TRUE(timer_.Reset());
+  ASSERT_FALSE(timer_.HasStarted());
+}
+
+TEST_F(TimerTest, SeparatedTimers) {
+  EXPECT_CALL(*clock_wrapper_mock_, GetCurrentTime())
+      .WillOnce(Return(stime))
+      .WillOnce(Return(etime))
+      .WillOnce(Return(stime2))
+      .WillOnce(Return(etime2));
+  timer_.clock_wrapper_.reset(clock_wrapper_mock_.release());
+  ASSERT_TRUE(timer_.Start());
+  ASSERT_TRUE(timer_.Stop());
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(), kDelta1MSec);
+  ASSERT_TRUE(timer_.Start());
+  ASSERT_TRUE(timer_.start_time_ == stime2);
+  ASSERT_TRUE(timer_.Stop());
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(), kDelta2MSec);
+  ASSERT_FALSE(timer_.HasStarted());
+
+  base::TimeDelta elapsed_time;
+  ASSERT_TRUE(timer_.GetElapsedTime(&elapsed_time));
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(),
+            elapsed_time.InMilliseconds());
+}
+
+TEST_F(TimerTest, InvalidStop) {
+  EXPECT_CALL(*clock_wrapper_mock_, GetCurrentTime())
+      .WillOnce(Return(stime))
+      .WillOnce(Return(etime));
+  timer_.clock_wrapper_.reset(clock_wrapper_mock_.release());
+  ASSERT_FALSE(timer_.Stop());
+  // Now we try it again, but after a valid start/stop.
+  timer_.Start();
+  timer_.Stop();
+  base::TimeDelta elapsed_time = timer_.elapsed_time_;
+  ASSERT_FALSE(timer_.Stop());
+  ASSERT_TRUE(elapsed_time == timer_.elapsed_time_);
+}
+
+TEST_F(TimerTest, InvalidElapsedTime) {
+  base::TimeDelta elapsed_time;
+  ASSERT_FALSE(timer_.GetElapsedTime(&elapsed_time));
+}
+
+TEST_F(TimerTest, PauseStartStopResume) {
+  EXPECT_CALL(*clock_wrapper_mock_, GetCurrentTime())
+      .WillOnce(Return(stime))
+      .WillOnce(Return(stime2))
+      .WillOnce(Return(etime2))
+      .WillOnce(Return(stime3))
+      .WillOnce(Return(etime3));
+  timer_.clock_wrapper_.reset(clock_wrapper_mock_.release());
+  ASSERT_TRUE(timer_.Pause());  // Starts timer paused.
+  ASSERT_TRUE(timer_.start_time_ == stime);
+  ASSERT_TRUE(timer_.HasStarted());
+
+  ASSERT_TRUE(timer_.Start());  // Restarts timer.
+  ASSERT_TRUE(timer_.start_time_ == stime2);
+  ASSERT_TRUE(timer_.HasStarted());
+
+  ASSERT_TRUE(timer_.Stop());
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(), kDelta2MSec);
+  ASSERT_FALSE(timer_.HasStarted());
+  base::TimeDelta elapsed_time;
+  ASSERT_TRUE(timer_.GetElapsedTime(&elapsed_time));
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(),
+            elapsed_time.InMilliseconds());
+
+  ASSERT_TRUE(timer_.Resume());
+  ASSERT_TRUE(timer_.HasStarted());
+  ASSERT_TRUE(timer_.GetElapsedTime(&elapsed_time));
+  ASSERT_EQ(kDelta3MSec, elapsed_time.InMilliseconds());
+}
+
+TEST_F(TimerTest, ResumeStartStopPause) {
+  EXPECT_CALL(*clock_wrapper_mock_, GetCurrentTime())
+      .WillOnce(Return(stime))
+      .WillOnce(Return(stime2))
+      .WillOnce(Return(etime2))
+      .WillOnce(Return(stime3));
+  timer_.clock_wrapper_.reset(clock_wrapper_mock_.release());
+  ASSERT_TRUE(timer_.Resume());
+  ASSERT_TRUE(timer_.start_time_ == stime);
+  ASSERT_TRUE(timer_.HasStarted());
+
+  ASSERT_TRUE(timer_.Start());
+  ASSERT_TRUE(timer_.start_time_ == stime2);
+  ASSERT_TRUE(timer_.HasStarted());
+
+  ASSERT_TRUE(timer_.Stop());
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(), kDelta2MSec);
+  ASSERT_FALSE(timer_.HasStarted());
+  base::TimeDelta elapsed_time;
+  ASSERT_TRUE(timer_.GetElapsedTime(&elapsed_time));
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(),
+            elapsed_time.InMilliseconds());
+
+  ASSERT_TRUE(timer_.Pause());
+  ASSERT_TRUE(timer_.HasStarted());
+  ASSERT_TRUE(timer_.GetElapsedTime(&elapsed_time));
+  ASSERT_EQ(0, elapsed_time.InMilliseconds());
+}
+
+TEST_F(TimerTest, StartResumeStop) {
+  EXPECT_CALL(*clock_wrapper_mock_, GetCurrentTime())
+      .WillOnce(Return(stime))
+      .WillOnce(Return(etime));
+  timer_.clock_wrapper_.reset(clock_wrapper_mock_.release());
+  ASSERT_TRUE(timer_.Start());
+  ASSERT_TRUE(timer_.start_time_ == stime);
+  ASSERT_TRUE(timer_.HasStarted());
+
+  ASSERT_FALSE(timer_.Resume());
+  ASSERT_TRUE(timer_.start_time_ == stime);
+  ASSERT_TRUE(timer_.HasStarted());
+
+  ASSERT_TRUE(timer_.Stop());
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(), kDelta1MSec);
+  ASSERT_FALSE(timer_.HasStarted());
+  base::TimeDelta elapsed_time;
+  ASSERT_TRUE(timer_.GetElapsedTime(&elapsed_time));
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(),
+            elapsed_time.InMilliseconds());
+}
+
+TEST_F(TimerTest, StartPauseStop) {
+  EXPECT_CALL(*clock_wrapper_mock_, GetCurrentTime())
+      .WillOnce(Return(stime))
+      .WillOnce(Return(etime));
+  timer_.clock_wrapper_.reset(clock_wrapper_mock_.release());
+  ASSERT_TRUE(timer_.Start());
+  ASSERT_TRUE(timer_.start_time_ == stime);
+  ASSERT_TRUE(timer_.HasStarted());
+
+  ASSERT_TRUE(timer_.Pause());
+  ASSERT_TRUE(timer_.HasStarted());
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(), kDelta1MSec);
+  base::TimeDelta elapsed_time;
+  ASSERT_TRUE(timer_.GetElapsedTime(&elapsed_time));
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(),
+            elapsed_time.InMilliseconds());
+
+  ASSERT_TRUE(timer_.Stop());
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(), kDelta1MSec);
+  ASSERT_FALSE(timer_.HasStarted());
+  ASSERT_TRUE(timer_.GetElapsedTime(&elapsed_time));
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(),
+            elapsed_time.InMilliseconds());
+}
+
+TEST_F(TimerTest, StartPauseResumeStop) {
+  EXPECT_CALL(*clock_wrapper_mock_, GetCurrentTime())
+      .WillOnce(Return(stime))
+      .WillOnce(Return(etime))
+      .WillOnce(Return(stime2))
+      .WillOnce(Return(etime2));
+  timer_.clock_wrapper_.reset(clock_wrapper_mock_.release());
+  ASSERT_TRUE(timer_.Start());
+  ASSERT_TRUE(timer_.start_time_ == stime);
+  ASSERT_TRUE(timer_.HasStarted());
+
+  ASSERT_TRUE(timer_.Pause());
+  ASSERT_TRUE(timer_.HasStarted());
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(), kDelta1MSec);
+  base::TimeDelta elapsed_time;
+  ASSERT_TRUE(timer_.GetElapsedTime(&elapsed_time));
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(),
+            elapsed_time.InMilliseconds());
+
+  ASSERT_TRUE(timer_.Resume());
+  ASSERT_TRUE(timer_.HasStarted());
+
+  ASSERT_TRUE(timer_.Stop());
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(), kDelta1MSec + kDelta2MSec);
+  ASSERT_FALSE(timer_.HasStarted());
+  ASSERT_TRUE(timer_.GetElapsedTime(&elapsed_time));
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(),
+            elapsed_time.InMilliseconds());
+}
+
+TEST_F(TimerTest, PauseStop) {
+  EXPECT_CALL(*clock_wrapper_mock_, GetCurrentTime())
+      .WillOnce(Return(stime));
+  timer_.clock_wrapper_.reset(clock_wrapper_mock_.release());
+  ASSERT_TRUE(timer_.Pause());
+  ASSERT_TRUE(timer_.start_time_ == stime);
+  ASSERT_TRUE(timer_.HasStarted());
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(), 0);
+
+  ASSERT_TRUE(timer_.Stop());
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(), 0);
+  ASSERT_FALSE(timer_.HasStarted());
+  base::TimeDelta elapsed_time;
+  ASSERT_TRUE(timer_.GetElapsedTime(&elapsed_time));
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(),
+            elapsed_time.InMilliseconds());
+}
+
+TEST_F(TimerTest, PauseResumeStop) {
+  EXPECT_CALL(*clock_wrapper_mock_, GetCurrentTime())
+      .WillOnce(Return(stime))
+      .WillOnce(Return(stime2))
+      .WillOnce(Return(etime2));
+  timer_.clock_wrapper_.reset(clock_wrapper_mock_.release());
+  ASSERT_TRUE(timer_.Pause());
+  ASSERT_TRUE(timer_.start_time_ == stime);
+  ASSERT_TRUE(timer_.HasStarted());
+
+  ASSERT_TRUE(timer_.Resume());
+  ASSERT_TRUE(timer_.HasStarted());
+
+  ASSERT_TRUE(timer_.Stop());
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(), kDelta2MSec);
+  ASSERT_FALSE(timer_.HasStarted());
+  base::TimeDelta elapsed_time;
+  ASSERT_TRUE(timer_.GetElapsedTime(&elapsed_time));
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(),
+            elapsed_time.InMilliseconds());
+}
+
+TEST_F(TimerTest, StartPauseResumePauseStop) {
+  EXPECT_CALL(*clock_wrapper_mock_, GetCurrentTime())
+      .WillOnce(Return(stime))
+      .WillOnce(Return(etime))
+      .WillOnce(Return(stime2))
+      .WillOnce(Return(stime3))
+      .WillOnce(Return(etime3));
+  timer_.clock_wrapper_.reset(clock_wrapper_mock_.release());
+  ASSERT_TRUE(timer_.Start());
+  ASSERT_TRUE(timer_.start_time_ == stime);
+  ASSERT_TRUE(timer_.HasStarted());
+
+  ASSERT_TRUE(timer_.Pause());
+  ASSERT_TRUE(timer_.HasStarted());
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(), kDelta1MSec);
+  base::TimeDelta elapsed_time;
+  ASSERT_TRUE(timer_.GetElapsedTime(&elapsed_time));
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(),
+            elapsed_time.InMilliseconds());
+
+  ASSERT_TRUE(timer_.Resume());
+  ASSERT_TRUE(timer_.HasStarted());
+  // Make sure GetElapsedTime works while we're running.
+  ASSERT_TRUE(timer_.GetElapsedTime(&elapsed_time));
+  ASSERT_EQ(kDelta1MSec + kStime3MSec - kStime2MSec,
+            elapsed_time.InMilliseconds());
+
+  ASSERT_TRUE(timer_.Pause());
+  ASSERT_TRUE(timer_.HasStarted());
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(),
+            kDelta1MSec + kEtime3MSec - kStime2MSec);
+  ASSERT_TRUE(timer_.GetElapsedTime(&elapsed_time));
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(),
+            elapsed_time.InMilliseconds());
+
+  ASSERT_TRUE(timer_.Stop());
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(),
+            kDelta1MSec + kEtime3MSec - kStime2MSec);
+  ASSERT_FALSE(timer_.HasStarted());
+  ASSERT_TRUE(timer_.GetElapsedTime(&elapsed_time));
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(),
+            elapsed_time.InMilliseconds());
+}
+
+TEST_F(TimerTest, StartPauseResumePauseResumeStop) {
+  EXPECT_CALL(*clock_wrapper_mock_, GetCurrentTime())
+      .WillOnce(Return(stime))
+      .WillOnce(Return(etime))
+      .WillOnce(Return(stime2))
+      .WillOnce(Return(etime2))
+      .WillOnce(Return(stime3))
+      .WillOnce(Return(etime3));
+  timer_.clock_wrapper_.reset(clock_wrapper_mock_.release());
+  ASSERT_TRUE(timer_.Start());
+  ASSERT_TRUE(timer_.start_time_ == stime);
+  ASSERT_TRUE(timer_.HasStarted());
+
+  ASSERT_TRUE(timer_.Pause());
+  ASSERT_TRUE(timer_.HasStarted());
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(), kDelta1MSec);
+  base::TimeDelta elapsed_time;
+  ASSERT_TRUE(timer_.GetElapsedTime(&elapsed_time));
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(),
+            elapsed_time.InMilliseconds());
+
+  ASSERT_TRUE(timer_.Resume());
+  ASSERT_TRUE(timer_.HasStarted());
+
+  ASSERT_TRUE(timer_.Pause());
+  ASSERT_TRUE(timer_.HasStarted());
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(), kDelta1MSec + kDelta2MSec);
+  ASSERT_TRUE(timer_.GetElapsedTime(&elapsed_time));
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(),
+            elapsed_time.InMilliseconds());
+
+  ASSERT_TRUE(timer_.Resume());
+  ASSERT_TRUE(timer_.HasStarted());
+
+  ASSERT_TRUE(timer_.Stop());
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(),
+            kDelta1MSec + kDelta2MSec + kDelta3MSec);
+  ASSERT_FALSE(timer_.HasStarted());
+  ASSERT_TRUE(timer_.GetElapsedTime(&elapsed_time));
+  ASSERT_EQ(timer_.elapsed_time_.InMilliseconds(),
+            elapsed_time.InMilliseconds());
+}
+
+static const char kMetricName[] = "test-timer";
+static const int kMinSample = 0;
+static const int kMaxSample = 120 * 1E6;
+static const int kNumBuckets = 50;
+
+class TimerReporterTest : public testing::Test {
+ public:
+  TimerReporterTest() : timer_reporter_(kMetricName, kMinSample, kMaxSample,
+                                        kNumBuckets),
+                        clock_wrapper_mock_(new ClockWrapperMock()) {}
+
+ protected:
+  virtual void SetUp() {
+    timer_reporter_.set_metrics_lib(&lib_);
+    EXPECT_EQ(timer_reporter_.histogram_name_, kMetricName);
+    EXPECT_EQ(timer_reporter_.min_, kMinSample);
+    EXPECT_EQ(timer_reporter_.max_, kMaxSample);
+    EXPECT_EQ(timer_reporter_.num_buckets_, kNumBuckets);
+    stime += base::TimeDelta::FromMilliseconds(kStime1MSec);
+    etime += base::TimeDelta::FromMilliseconds(kEtime1MSec);
+  }
+
+  virtual void TearDown() {
+    timer_reporter_.set_metrics_lib(nullptr);
+  }
+
+  TimerReporter timer_reporter_;
+  MetricsLibraryMock lib_;
+  scoped_ptr<ClockWrapperMock> clock_wrapper_mock_;
+  base::TimeTicks stime, etime;
+};
+
+TEST_F(TimerReporterTest, StartStopReport) {
+  EXPECT_CALL(*clock_wrapper_mock_, GetCurrentTime())
+      .WillOnce(Return(stime))
+      .WillOnce(Return(etime));
+  timer_reporter_.clock_wrapper_.reset(clock_wrapper_mock_.release());
+  EXPECT_CALL(lib_, SendToUMA(kMetricName, kDelta1MSec, kMinSample, kMaxSample,
+                              kNumBuckets)).WillOnce(Return(true));
+  ASSERT_TRUE(timer_reporter_.Start());
+  ASSERT_TRUE(timer_reporter_.Stop());
+  ASSERT_TRUE(timer_reporter_.ReportMilliseconds());
+}
+
+TEST_F(TimerReporterTest, InvalidReport) {
+  ASSERT_FALSE(timer_reporter_.ReportMilliseconds());
+}
+
+}  // namespace chromeos_metrics
+
+int main(int argc, char **argv) {
+  testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}
diff --git a/metricsd/uploader/metrics_hashes.cc b/metricsd/uploader/metrics_hashes.cc
new file mode 100644
index 0000000..208c560
--- /dev/null
+++ b/metricsd/uploader/metrics_hashes.cc
@@ -0,0 +1,51 @@
+/*
+ * 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 "uploader/metrics_hashes.h"
+
+#include "base/logging.h"
+#include "base/md5.h"
+#include "base/sys_byteorder.h"
+
+namespace metrics {
+
+namespace {
+
+// Converts the 8-byte prefix of an MD5 hash into a uint64 value.
+inline uint64_t HashToUInt64(const std::string& hash) {
+  uint64_t value;
+  DCHECK_GE(hash.size(), sizeof(value));
+  memcpy(&value, hash.data(), sizeof(value));
+  return base::HostToNet64(value);
+}
+
+}  // namespace
+
+uint64_t HashMetricName(const std::string& name) {
+  // Create an MD5 hash of the given |name|, represented as a byte buffer
+  // encoded as an std::string.
+  base::MD5Context context;
+  base::MD5Init(&context);
+  base::MD5Update(&context, name);
+
+  base::MD5Digest digest;
+  base::MD5Final(&digest, &context);
+
+  std::string hash_str(reinterpret_cast<char*>(digest.a), arraysize(digest.a));
+  return HashToUInt64(hash_str);
+}
+
+}  // namespace metrics
diff --git a/base/test_utils.h b/metricsd/uploader/metrics_hashes.h
similarity index 64%
copy from base/test_utils.h
copy to metricsd/uploader/metrics_hashes.h
index 132d3a7..1082b42 100644
--- a/base/test_utils.h
+++ b/metricsd/uploader/metrics_hashes.h
@@ -14,19 +14,17 @@
  * limitations under the License.
  */
 
-#ifndef TEST_UTILS_H
-#define TEST_UTILS_H
+#ifndef METRICS_UPLOADER_METRICS_HASHES_H_
+#define METRICS_UPLOADER_METRICS_HASHES_H_
 
-class TemporaryFile {
- public:
-  TemporaryFile();
-  ~TemporaryFile();
+#include <string>
 
-  int fd;
-  char filename[1024];
+namespace metrics {
 
- private:
-  void init(const char* tmp_dir);
-};
+// Computes a uint64 hash of a given string based on its MD5 hash. Suitable for
+// metric names.
+uint64_t HashMetricName(const std::string& name);
 
-#endif // TEST_UTILS_H
+}  // namespace metrics
+
+#endif  // METRICS_UPLOADER_METRICS_HASHES_H_
diff --git a/metricsd/uploader/metrics_hashes_unittest.cc b/metricsd/uploader/metrics_hashes_unittest.cc
new file mode 100644
index 0000000..b8c2575
--- /dev/null
+++ b/metricsd/uploader/metrics_hashes_unittest.cc
@@ -0,0 +1,44 @@
+/*
+ * 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 "uploader/metrics_hashes.h"
+
+#include <base/format_macros.h>
+#include <base/macros.h>
+#include <base/strings/stringprintf.h>
+#include <gtest/gtest.h>
+
+namespace metrics {
+
+// Make sure our ID hashes are the same as what we see on the server side.
+TEST(MetricsUtilTest, HashMetricName) {
+  static const struct {
+    std::string input;
+    std::string output;
+  } cases[] = {
+    {"Back", "0x0557fa923dcee4d0"},
+    {"Forward", "0x67d2f6740a8eaebf"},
+    {"NewTab", "0x290eb683f96572f1"},
+  };
+
+  for (size_t i = 0; i < arraysize(cases); ++i) {
+    uint64_t hash = HashMetricName(cases[i].input);
+    std::string hash_hex = base::StringPrintf("0x%016" PRIx64, hash);
+    EXPECT_EQ(cases[i].output, hash_hex);
+  }
+}
+
+}  // namespace metrics
diff --git a/metricsd/uploader/metrics_log.cc b/metricsd/uploader/metrics_log.cc
new file mode 100644
index 0000000..5f4c599
--- /dev/null
+++ b/metricsd/uploader/metrics_log.cc
@@ -0,0 +1,53 @@
+/*
+ * 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 "uploader/metrics_log.h"
+
+#include <string>
+
+#include "uploader/proto/system_profile.pb.h"
+#include "uploader/system_profile_setter.h"
+
+// We use default values for the MetricsLogBase constructor as the setter will
+// override them.
+MetricsLog::MetricsLog()
+    : MetricsLogBase("", 0, metrics::MetricsLogBase::ONGOING_LOG, "") {
+}
+
+void MetricsLog::IncrementUserCrashCount() {
+  metrics::SystemProfileProto::Stability* stability(
+      uma_proto()->mutable_system_profile()->mutable_stability());
+  int current = stability->other_user_crash_count();
+  stability->set_other_user_crash_count(current + 1);
+}
+
+void MetricsLog::IncrementKernelCrashCount() {
+  metrics::SystemProfileProto::Stability* stability(
+      uma_proto()->mutable_system_profile()->mutable_stability());
+  int current = stability->kernel_crash_count();
+  stability->set_kernel_crash_count(current + 1);
+}
+
+void MetricsLog::IncrementUncleanShutdownCount() {
+  metrics::SystemProfileProto::Stability* stability(
+      uma_proto()->mutable_system_profile()->mutable_stability());
+  int current = stability->unclean_system_shutdown_count();
+  stability->set_unclean_system_shutdown_count(current + 1);
+}
+
+void MetricsLog::PopulateSystemProfile(SystemProfileSetter* profile_setter) {
+  profile_setter->Populate(uma_proto());
+}
diff --git a/metricsd/uploader/metrics_log.h b/metricsd/uploader/metrics_log.h
new file mode 100644
index 0000000..50fed89
--- /dev/null
+++ b/metricsd/uploader/metrics_log.h
@@ -0,0 +1,54 @@
+/*
+ * 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 METRICS_UPLOADER_METRICS_LOG_H_
+#define METRICS_UPLOADER_METRICS_LOG_H_
+
+#include <string>
+
+#include <base/macros.h>
+
+#include "uploader/metrics_log_base.h"
+
+// This file defines a set of user experience metrics data recorded by
+// the MetricsService. This is the unit of data that is sent to the server.
+class SystemProfileSetter;
+
+// This class provides base functionality for logging metrics data.
+class MetricsLog : public metrics::MetricsLogBase {
+ public:
+  // The constructor doesn't set any metadata. The metadata is only set by a
+  // SystemProfileSetter.
+  MetricsLog();
+
+  void IncrementUserCrashCount();
+  void IncrementKernelCrashCount();
+  void IncrementUncleanShutdownCount();
+
+  // Populate the system profile with system information using setter.
+  void PopulateSystemProfile(SystemProfileSetter* setter);
+
+ private:
+  FRIEND_TEST(UploadServiceTest, LogContainsAggregatedValues);
+  FRIEND_TEST(UploadServiceTest, LogKernelCrash);
+  FRIEND_TEST(UploadServiceTest, LogUncleanShutdown);
+  FRIEND_TEST(UploadServiceTest, LogUserCrash);
+  FRIEND_TEST(UploadServiceTest, UnknownCrashIgnored);
+
+  DISALLOW_COPY_AND_ASSIGN(MetricsLog);
+};
+
+#endif  // METRICS_UPLOADER_METRICS_LOG_H_
diff --git a/metricsd/uploader/metrics_log_base.cc b/metricsd/uploader/metrics_log_base.cc
new file mode 100644
index 0000000..ee325ae
--- /dev/null
+++ b/metricsd/uploader/metrics_log_base.cc
@@ -0,0 +1,154 @@
+/*
+ * 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 "uploader/metrics_log_base.h"
+
+#include "base/metrics/histogram_base.h"
+#include "base/metrics/histogram_samples.h"
+#include "uploader/metrics_hashes.h"
+#include "uploader/proto/histogram_event.pb.h"
+#include "uploader/proto/system_profile.pb.h"
+#include "uploader/proto/user_action_event.pb.h"
+
+using base::Histogram;
+using base::HistogramBase;
+using base::HistogramSamples;
+using base::SampleCountIterator;
+using base::Time;
+using base::TimeDelta;
+using metrics::HistogramEventProto;
+using metrics::SystemProfileProto;
+using metrics::UserActionEventProto;
+
+namespace metrics {
+namespace {
+
+// Any id less than 16 bytes is considered to be a testing id.
+bool IsTestingID(const std::string& id) {
+  return id.size() < 16;
+}
+
+}  // namespace
+
+MetricsLogBase::MetricsLogBase(const std::string& client_id,
+                               int session_id,
+                               LogType log_type,
+                               const std::string& version_string)
+    : num_events_(0),
+      locked_(false),
+      log_type_(log_type) {
+  DCHECK_NE(NO_LOG, log_type);
+  if (IsTestingID(client_id))
+    uma_proto_.set_client_id(0);
+  else
+    uma_proto_.set_client_id(Hash(client_id));
+
+  uma_proto_.set_session_id(session_id);
+  uma_proto_.mutable_system_profile()->set_build_timestamp(GetBuildTime());
+  uma_proto_.mutable_system_profile()->set_app_version(version_string);
+}
+
+MetricsLogBase::~MetricsLogBase() {}
+
+// static
+uint64_t MetricsLogBase::Hash(const std::string& value) {
+  uint64_t hash = metrics::HashMetricName(value);
+
+  // The following log is VERY helpful when folks add some named histogram into
+  // the code, but forgot to update the descriptive list of histograms.  When
+  // that happens, all we get to see (server side) is a hash of the histogram
+  // name.  We can then use this logging to find out what histogram name was
+  // being hashed to a given MD5 value by just running the version of Chromium
+  // in question with --enable-logging.
+  DVLOG(1) << "Metrics: Hash numeric [" << value << "]=[" << hash << "]";
+
+  return hash;
+}
+
+// static
+int64_t MetricsLogBase::GetBuildTime() {
+  static int64_t integral_build_time = 0;
+  if (!integral_build_time) {
+    Time time;
+    const char* kDateTime = __DATE__ " " __TIME__ " GMT";
+    bool result = Time::FromString(kDateTime, &time);
+    DCHECK(result);
+    integral_build_time = static_cast<int64_t>(time.ToTimeT());
+  }
+  return integral_build_time;
+}
+
+// static
+int64_t MetricsLogBase::GetCurrentTime() {
+  return (base::TimeTicks::Now() - base::TimeTicks()).InSeconds();
+}
+
+void MetricsLogBase::CloseLog() {
+  DCHECK(!locked_);
+  locked_ = true;
+}
+
+void MetricsLogBase::GetEncodedLog(std::string* encoded_log) {
+  DCHECK(locked_);
+  uma_proto_.SerializeToString(encoded_log);
+}
+
+void MetricsLogBase::RecordUserAction(const std::string& key) {
+  DCHECK(!locked_);
+
+  UserActionEventProto* user_action = uma_proto_.add_user_action_event();
+  user_action->set_name_hash(Hash(key));
+  user_action->set_time(GetCurrentTime());
+
+  ++num_events_;
+}
+
+void MetricsLogBase::RecordHistogramDelta(const std::string& histogram_name,
+                                          const HistogramSamples& snapshot) {
+  DCHECK(!locked_);
+  DCHECK_NE(0, snapshot.TotalCount());
+
+  // We will ignore the MAX_INT/infinite value in the last element of range[].
+
+  HistogramEventProto* histogram_proto = uma_proto_.add_histogram_event();
+  histogram_proto->set_name_hash(Hash(histogram_name));
+  histogram_proto->set_sum(snapshot.sum());
+
+  for (scoped_ptr<SampleCountIterator> it = snapshot.Iterator(); !it->Done();
+       it->Next()) {
+    HistogramBase::Sample min;
+    HistogramBase::Sample max;
+    HistogramBase::Count count;
+    it->Get(&min, &max, &count);
+    HistogramEventProto::Bucket* bucket = histogram_proto->add_bucket();
+    bucket->set_min(min);
+    bucket->set_max(max);
+    bucket->set_count(count);
+  }
+
+  // Omit fields to save space (see rules in histogram_event.proto comments).
+  for (int i = 0; i < histogram_proto->bucket_size(); ++i) {
+    HistogramEventProto::Bucket* bucket = histogram_proto->mutable_bucket(i);
+    if (i + 1 < histogram_proto->bucket_size() &&
+        bucket->max() == histogram_proto->bucket(i + 1).min()) {
+      bucket->clear_max();
+    } else if (bucket->max() == bucket->min() + 1) {
+      bucket->clear_min();
+    }
+  }
+}
+
+}  // namespace metrics
diff --git a/metricsd/uploader/metrics_log_base.h b/metricsd/uploader/metrics_log_base.h
new file mode 100644
index 0000000..f4e1995
--- /dev/null
+++ b/metricsd/uploader/metrics_log_base.h
@@ -0,0 +1,122 @@
+/*
+ * 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.
+ */
+
+// This file defines a set of user experience metrics data recorded by
+// the MetricsService.  This is the unit of data that is sent to the server.
+
+#ifndef METRICS_UPLOADER_METRICS_LOG_BASE_H_
+#define METRICS_UPLOADER_METRICS_LOG_BASE_H_
+
+#include <string>
+
+#include "base/macros.h"
+#include "base/metrics/histogram.h"
+#include "base/time/time.h"
+#include "uploader/proto/chrome_user_metrics_extension.pb.h"
+
+namespace base {
+class HistogramSamples;
+}  // namespace base
+
+namespace metrics {
+
+// This class provides base functionality for logging metrics data.
+class MetricsLogBase {
+ public:
+  // TODO(asvitkine): Remove the NO_LOG value.
+  enum LogType {
+    INITIAL_STABILITY_LOG,  // The initial log containing stability stats.
+    ONGOING_LOG,            // Subsequent logs in a session.
+    NO_LOG,                 // Placeholder value for when there is no log.
+  };
+
+  // Creates a new metrics log of the specified type.
+  // client_id is the identifier for this profile on this installation
+  // session_id is an integer that's incremented on each application launch
+  MetricsLogBase(const std::string& client_id,
+                 int session_id,
+                 LogType log_type,
+                 const std::string& version_string);
+  virtual ~MetricsLogBase();
+
+  // Computes the MD5 hash of the given string, and returns the first 8 bytes of
+  // the hash.
+  static uint64_t Hash(const std::string& value);
+
+  // Get the GMT buildtime for the current binary, expressed in seconds since
+  // January 1, 1970 GMT.
+  // The value is used to identify when a new build is run, so that previous
+  // reliability stats, from other builds, can be abandoned.
+  static int64_t GetBuildTime();
+
+  // Convenience function to return the current time at a resolution in seconds.
+  // This wraps base::TimeTicks, and hence provides an abstract time that is
+  // always incrementing for use in measuring time durations.
+  static int64_t GetCurrentTime();
+
+  // Records a user-initiated action.
+  void RecordUserAction(const std::string& key);
+
+  // Record any changes in a given histogram for transmission.
+  void RecordHistogramDelta(const std::string& histogram_name,
+                            const base::HistogramSamples& snapshot);
+
+  // Stop writing to this record and generate the encoded representation.
+  // None of the Record* methods can be called after this is called.
+  void CloseLog();
+
+  // Fills |encoded_log| with the serialized protobuf representation of the
+  // record.  Must only be called after CloseLog() has been called.
+  void GetEncodedLog(std::string* encoded_log);
+
+  int num_events() { return num_events_; }
+
+  void set_hardware_class(const std::string& hardware_class) {
+    uma_proto_.mutable_system_profile()->mutable_hardware()->set_hardware_class(
+        hardware_class);
+  }
+
+  LogType log_type() const { return log_type_; }
+
+ protected:
+  bool locked() const { return locked_; }
+
+  metrics::ChromeUserMetricsExtension* uma_proto() { return &uma_proto_; }
+  const metrics::ChromeUserMetricsExtension* uma_proto() const {
+    return &uma_proto_;
+  }
+
+  // TODO(isherman): Remove this once the XML pipeline is outta here.
+  int num_events_;  // the number of events recorded in this log
+
+ private:
+  // locked_ is true when record has been packed up for sending, and should
+  // no longer be written to.  It is only used for sanity checking and is
+  // not a real lock.
+  bool locked_;
+
+  // The type of the log, i.e. initial or ongoing.
+  const LogType log_type_;
+
+  // Stores the protocol buffer representation for this log.
+  metrics::ChromeUserMetricsExtension uma_proto_;
+
+  DISALLOW_COPY_AND_ASSIGN(MetricsLogBase);
+};
+
+}  // namespace metrics
+
+#endif  // METRICS_UPLOADER_METRICS_LOG_BASE_H_
diff --git a/metricsd/uploader/metrics_log_base_unittest.cc b/metricsd/uploader/metrics_log_base_unittest.cc
new file mode 100644
index 0000000..980afd5
--- /dev/null
+++ b/metricsd/uploader/metrics_log_base_unittest.cc
@@ -0,0 +1,137 @@
+/*
+ * 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 "uploader/metrics_log_base.h"
+
+#include <string>
+
+#include <base/metrics/bucket_ranges.h>
+#include <base/metrics/sample_vector.h>
+#include <gtest/gtest.h>
+
+#include "uploader/proto/chrome_user_metrics_extension.pb.h"
+
+namespace metrics {
+
+namespace {
+
+class TestMetricsLogBase : public MetricsLogBase {
+ public:
+  TestMetricsLogBase()
+      : MetricsLogBase("client_id", 1, MetricsLogBase::ONGOING_LOG, "1.2.3.4") {
+  }
+  virtual ~TestMetricsLogBase() {}
+
+  using MetricsLogBase::uma_proto;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(TestMetricsLogBase);
+};
+
+}  // namespace
+
+TEST(MetricsLogBaseTest, LogType) {
+  MetricsLogBase log1("id", 0, MetricsLogBase::ONGOING_LOG, "1.2.3");
+  EXPECT_EQ(MetricsLogBase::ONGOING_LOG, log1.log_type());
+
+  MetricsLogBase log2("id", 0, MetricsLogBase::INITIAL_STABILITY_LOG, "1.2.3");
+  EXPECT_EQ(MetricsLogBase::INITIAL_STABILITY_LOG, log2.log_type());
+}
+
+TEST(MetricsLogBaseTest, EmptyRecord) {
+  MetricsLogBase log("totally bogus client ID", 137,
+                     MetricsLogBase::ONGOING_LOG, "bogus version");
+  log.set_hardware_class("sample-class");
+  log.CloseLog();
+
+  std::string encoded;
+  log.GetEncodedLog(&encoded);
+
+  // A couple of fields are hard to mock, so these will be copied over directly
+  // for the expected output.
+  metrics::ChromeUserMetricsExtension parsed;
+  ASSERT_TRUE(parsed.ParseFromString(encoded));
+
+  metrics::ChromeUserMetricsExtension expected;
+  expected.set_client_id(5217101509553811875);  // Hashed bogus client ID
+  expected.set_session_id(137);
+  expected.mutable_system_profile()->set_build_timestamp(
+      parsed.system_profile().build_timestamp());
+  expected.mutable_system_profile()->set_app_version("bogus version");
+  expected.mutable_system_profile()->mutable_hardware()->set_hardware_class(
+      "sample-class");
+
+  EXPECT_EQ(expected.SerializeAsString(), encoded);
+}
+
+TEST(MetricsLogBaseTest, HistogramBucketFields) {
+  // Create buckets: 1-5, 5-7, 7-8, 8-9, 9-10, 10-11, 11-12.
+  base::BucketRanges ranges(8);
+  ranges.set_range(0, 1);
+  ranges.set_range(1, 5);
+  ranges.set_range(2, 7);
+  ranges.set_range(3, 8);
+  ranges.set_range(4, 9);
+  ranges.set_range(5, 10);
+  ranges.set_range(6, 11);
+  ranges.set_range(7, 12);
+
+  base::SampleVector samples(&ranges);
+  samples.Accumulate(3, 1);   // Bucket 1-5.
+  samples.Accumulate(6, 1);   // Bucket 5-7.
+  samples.Accumulate(8, 1);   // Bucket 8-9. (7-8 skipped)
+  samples.Accumulate(10, 1);  // Bucket 10-11. (9-10 skipped)
+  samples.Accumulate(11, 1);  // Bucket 11-12.
+
+  TestMetricsLogBase log;
+  log.RecordHistogramDelta("Test", samples);
+
+  const metrics::ChromeUserMetricsExtension* uma_proto = log.uma_proto();
+  const metrics::HistogramEventProto& histogram_proto =
+      uma_proto->histogram_event(uma_proto->histogram_event_size() - 1);
+
+  // Buckets with samples: 1-5, 5-7, 8-9, 10-11, 11-12.
+  // Should become: 1-/, 5-7, /-9, 10-/, /-12.
+  ASSERT_EQ(5, histogram_proto.bucket_size());
+
+  // 1-5 becomes 1-/ (max is same as next min).
+  EXPECT_TRUE(histogram_proto.bucket(0).has_min());
+  EXPECT_FALSE(histogram_proto.bucket(0).has_max());
+  EXPECT_EQ(1, histogram_proto.bucket(0).min());
+
+  // 5-7 stays 5-7 (no optimization possible).
+  EXPECT_TRUE(histogram_proto.bucket(1).has_min());
+  EXPECT_TRUE(histogram_proto.bucket(1).has_max());
+  EXPECT_EQ(5, histogram_proto.bucket(1).min());
+  EXPECT_EQ(7, histogram_proto.bucket(1).max());
+
+  // 8-9 becomes /-9 (min is same as max - 1).
+  EXPECT_FALSE(histogram_proto.bucket(2).has_min());
+  EXPECT_TRUE(histogram_proto.bucket(2).has_max());
+  EXPECT_EQ(9, histogram_proto.bucket(2).max());
+
+  // 10-11 becomes 10-/ (both optimizations apply, omit max is prioritized).
+  EXPECT_TRUE(histogram_proto.bucket(3).has_min());
+  EXPECT_FALSE(histogram_proto.bucket(3).has_max());
+  EXPECT_EQ(10, histogram_proto.bucket(3).min());
+
+  // 11-12 becomes /-12 (last record must keep max, min is same as max - 1).
+  EXPECT_FALSE(histogram_proto.bucket(4).has_min());
+  EXPECT_TRUE(histogram_proto.bucket(4).has_max());
+  EXPECT_EQ(12, histogram_proto.bucket(4).max());
+}
+
+}  // namespace metrics
diff --git a/metricsd/uploader/mock/mock_system_profile_setter.h b/metricsd/uploader/mock/mock_system_profile_setter.h
new file mode 100644
index 0000000..c714e9c
--- /dev/null
+++ b/metricsd/uploader/mock/mock_system_profile_setter.h
@@ -0,0 +1,32 @@
+/*
+ * 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 METRICS_UPLOADER_MOCK_MOCK_SYSTEM_PROFILE_SETTER_H_
+#define METRICS_UPLOADER_MOCK_MOCK_SYSTEM_PROFILE_SETTER_H_
+
+#include "uploader/system_profile_setter.h"
+
+namespace metrics {
+class ChromeUserMetricsExtension;
+}
+
+// Mock profile setter used for testing.
+class MockSystemProfileSetter : public SystemProfileSetter {
+ public:
+  void Populate(metrics::ChromeUserMetricsExtension* profile_proto) override {}
+};
+
+#endif  // METRICS_UPLOADER_MOCK_MOCK_SYSTEM_PROFILE_SETTER_H_
diff --git a/metricsd/uploader/mock/sender_mock.cc b/metricsd/uploader/mock/sender_mock.cc
new file mode 100644
index 0000000..bb4dc7d
--- /dev/null
+++ b/metricsd/uploader/mock/sender_mock.cc
@@ -0,0 +1,36 @@
+/*
+ * 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 "uploader/mock/sender_mock.h"
+
+SenderMock::SenderMock() {
+  Reset();
+}
+
+bool SenderMock::Send(const std::string& content, const std::string& hash) {
+  send_call_count_ += 1;
+  last_message_ = content;
+  is_good_proto_ = last_message_proto_.ParseFromString(content);
+  return should_succeed_;
+}
+
+void SenderMock::Reset() {
+  send_call_count_ = 0;
+  last_message_ = "";
+  should_succeed_ = true;
+  last_message_proto_.Clear();
+  is_good_proto_ = false;
+}
diff --git a/metricsd/uploader/mock/sender_mock.h b/metricsd/uploader/mock/sender_mock.h
new file mode 100644
index 0000000..e79233f
--- /dev/null
+++ b/metricsd/uploader/mock/sender_mock.h
@@ -0,0 +1,60 @@
+/*
+ * 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 METRICS_UPLOADER_MOCK_SENDER_MOCK_H_
+#define METRICS_UPLOADER_MOCK_SENDER_MOCK_H_
+
+#include <string>
+
+#include "base/compiler_specific.h"
+#include "uploader/proto/chrome_user_metrics_extension.pb.h"
+#include "uploader/sender.h"
+
+class SenderMock : public Sender {
+ public:
+  SenderMock();
+
+  bool Send(const std::string& content, const std::string& hash) override;
+  void Reset();
+
+  bool is_good_proto() { return is_good_proto_; }
+  int send_call_count() { return send_call_count_; }
+  const std::string last_message() { return last_message_; }
+  metrics::ChromeUserMetricsExtension last_message_proto() {
+    return last_message_proto_;
+  }
+  void set_should_succeed(bool succeed) { should_succeed_ = succeed; }
+
+ private:
+  // Is set to true if the proto was parsed successfully.
+  bool is_good_proto_;
+
+  // If set to true, the Send method will return true to simulate a successful
+  // send.
+  bool should_succeed_;
+
+  // Count of how many times Send was called since the last reset.
+  int send_call_count_;
+
+  // Last message received by Send.
+  std::string last_message_;
+
+  // If is_good_proto is true, last_message_proto is the deserialized
+  // representation of last_message.
+  metrics::ChromeUserMetricsExtension last_message_proto_;
+};
+
+#endif  // METRICS_UPLOADER_MOCK_SENDER_MOCK_H_
diff --git a/metricsd/uploader/proto/README b/metricsd/uploader/proto/README
new file mode 100644
index 0000000..4292a40
--- /dev/null
+++ b/metricsd/uploader/proto/README
@@ -0,0 +1,37 @@
+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.
+
+
+
+
+This directory contains the protocol buffers used by the standalone metrics
+uploader. Those protobuffers are copied from the chromium protobuffers from
+https://chromium.googlesource.com/chromium/src/+/master/components/metrics/proto/
+at 3bfe5f2b4c03d2cac718d137ed14cd2c6354bfed.
+
+Any change to this protobuf must first be made to the backend's protobuf and be
+compatible with the chromium protobuffers.
+
+
+Q: Why fork the chromium protobuffers ?
+A: The standalone metrics uploader needs chromium os fields that are not defined
+by the chromium protobufs. Instead of pushing chromium os specific changes to
+chromium, we can add them only to chromium os (and to the backend of course).
+
+
+Q: What's the difference between those protobuffers and chromium's protobuffers?
+A: When the protobuffers were copied, some chromium specific protobuffers were
+not imported:
+* omnibox related protobuffers.
+* performance profiling protobuffers (not used in chromium os).
diff --git a/metricsd/uploader/proto/chrome_user_metrics_extension.proto b/metricsd/uploader/proto/chrome_user_metrics_extension.proto
new file mode 100644
index 0000000..a07830f
--- /dev/null
+++ b/metricsd/uploader/proto/chrome_user_metrics_extension.proto
@@ -0,0 +1,72 @@
+/*
+ * 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.
+ */
+//
+// Protocol buffer for Chrome UMA (User Metrics Analysis).
+//
+// Note: this protobuf must be compatible with the one in chromium.
+
+syntax = "proto2";
+
+option optimize_for = LITE_RUNTIME;
+option java_outer_classname = "ChromeUserMetricsExtensionProtos";
+option java_package = "org.chromium.components.metrics";
+
+package metrics;
+
+import "system/core/metricsd/uploader/proto/histogram_event.proto";
+import "system/core/metricsd/uploader/proto/system_profile.proto";
+import "system/core/metricsd/uploader/proto/user_action_event.proto";
+
+// Next tag: 13
+message ChromeUserMetricsExtension {
+  // The product (i.e. end user application) for a given UMA log.
+  enum Product {
+    // Google Chrome product family.
+    CHROME = 0;
+  }
+  // The product corresponding to this log. The field type is int32 instead of
+  // Product so that downstream users of the Chromium metrics component can
+  // introduce products without needing to make changes to the Chromium code
+  // (though they still need to add the new product to the server-side enum).
+  // Note: The default value is Chrome, so Chrome products will not transmit
+  // this field.
+  optional int32 product = 10 [default = 0];
+
+  // The id of the client install that generated these events.
+  //
+  // For Chrome clients, this id is unique to a top-level (one level above the
+  // "Default" directory) Chrome user data directory [1], and so is shared among
+  // all Chrome user profiles contained in this user data directory.
+  // An id of 0 is reserved for test data (monitoring and internal testing) and
+  // should normally be ignored in analysis of the data.
+  // [1] http://www.chromium.org/user-experience/user-data-directory
+  optional fixed64 client_id = 1;
+
+  // The session id for this user.
+  // Values such as tab ids are only meaningful within a particular session.
+  // The client keeps track of the session id and sends it with each event.
+  // The session id is simply an integer that is incremented each time the user
+  // relaunches Chrome.
+  optional int32 session_id = 2;
+
+  // Information about the user's browser and system configuration.
+  optional SystemProfileProto system_profile = 3;
+
+  // This message will log one or more of the following event types:
+  repeated UserActionEventProto user_action_event = 4;
+  repeated HistogramEventProto histogram_event = 6;
+
+}
diff --git a/metricsd/uploader/proto/histogram_event.proto b/metricsd/uploader/proto/histogram_event.proto
new file mode 100644
index 0000000..3825063
--- /dev/null
+++ b/metricsd/uploader/proto/histogram_event.proto
@@ -0,0 +1,59 @@
+/*
+ * 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.
+ */
+//
+// Histogram-collected metrics.
+
+syntax = "proto2";
+
+option optimize_for = LITE_RUNTIME;
+option java_outer_classname = "HistogramEventProtos";
+option java_package = "org.chromium.components.metrics";
+
+package metrics;
+
+// Next tag: 4
+message HistogramEventProto {
+  // The name of the histogram, hashed.
+  optional fixed64 name_hash = 1;
+
+  // The sum of all the sample values.
+  // Together with the total count of the sample values, this allows us to
+  // compute the average value.  The count of all sample values is just the sum
+  // of the counts of all the buckets.
+  optional int64 sum = 2;
+
+  // The per-bucket data.
+  message Bucket {
+    // Each bucket's range is bounded by min <= x < max.
+    // It is valid to omit one of these two fields in a bucket, but not both.
+    // If the min field is omitted, its value is assumed to be equal to max - 1.
+    // If the max field is omitted, its value is assumed to be equal to the next
+    // bucket's min value (possibly computed per above).  The last bucket in a
+    // histogram should always include the max field.
+    optional int64 min = 1;
+    optional int64 max = 2;
+
+    // The bucket's index in the list of buckets, sorted in ascending order.
+    // This field was intended to provide extra redundancy to detect corrupted
+    // records, but was never used.  As of M31, it is no longer sent by Chrome
+    // clients to reduce the UMA upload size.
+    optional int32 bucket_index = 3 [deprecated = true];
+
+    // The number of entries in this bucket.
+    optional int64 count = 4;
+  }
+  repeated Bucket bucket = 3;
+}
diff --git a/metricsd/uploader/proto/system_profile.proto b/metricsd/uploader/proto/system_profile.proto
new file mode 100644
index 0000000..4cab0d9
--- /dev/null
+++ b/metricsd/uploader/proto/system_profile.proto
@@ -0,0 +1,759 @@
+/*
+ * 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.
+ */
+//
+// Stores information about the user's brower and system configuration.
+// The system configuration fields are recorded once per client session.
+
+syntax = "proto2";
+
+option optimize_for = LITE_RUNTIME;
+option java_outer_classname = "SystemProfileProtos";
+option java_package = "org.chromium.components.metrics";
+
+package metrics;
+
+// Next tag: 21
+message SystemProfileProto {
+  // The time when the client was compiled/linked, in seconds since the epoch.
+  optional int64 build_timestamp = 1;
+
+  // A version number string for the application.
+  // Most commonly this is the browser version number found in a user agent
+  // string, and is typically a 4-tuple of numbers separated by periods.  In
+  // cases where the user agent version might be ambiguous (example: Linux 64-
+  // bit build, rather than 32-bit build, or a Windows version used in some
+  // special context, such as ChromeFrame running in IE), then this may include
+  // some additional postfix to provide clarification not available in the UA
+  // string.
+  //
+  // An example of a browser version 4-tuple is "5.0.322.0".  Currently used
+  // postfixes are:
+  //
+  //   "-64": a 64-bit build
+  //   "-F": Chrome is running under control of ChromeFrame
+  //   "-devel": this is not an official build of Chrome
+  //
+  // A full version number string could look similar to:
+  // "5.0.322.0-F-devel".
+  //
+  // This value, when available, is more trustworthy than the UA string
+  // associated with the request; and including the postfix, may be more
+  // specific.
+  optional string app_version = 2;
+
+  // The brand code or distribution tag assigned to a partner, if available.
+  // Brand codes are only available on Windows.  Not every Windows install
+  // though will have a brand code.
+  optional string brand_code = 12;
+
+  // The possible channels for an installation, from least to most stable.
+  enum Channel {
+    CHANNEL_UNKNOWN = 0;  // Unknown channel -- perhaps an unofficial build?
+    CHANNEL_CANARY = 1;
+    CHANNEL_DEV = 2;
+    CHANNEL_BETA = 3;
+    CHANNEL_STABLE = 4;
+  }
+  optional Channel channel = 10;
+
+  // True if Chrome build is ASan-instrumented.
+  optional bool is_asan_build = 20 [default = false];
+
+  // The date the user enabled UMA, in seconds since the epoch.
+  // If the user has toggled the UMA enabled state multiple times, this will
+  // be the most recent date on which UMA was enabled.
+  // For privacy, this is rounded to the nearest hour.
+  optional int64 uma_enabled_date = 3;
+
+  // The time when the client was installed, in seconds since the epoch.
+  // For privacy, this is rounded to the nearest hour.
+  optional int64 install_date = 16;
+
+  // The user's selected application locale, i.e. the user interface language.
+  // The locale includes a language code and, possibly, also a country code,
+  // e.g. "en-US".
+  optional string application_locale = 4;
+
+  message BrilloDeviceData {
+    optional string build_target_id = 1;
+  }
+  optional BrilloDeviceData brillo = 21;
+
+  // Information on the user's operating system.
+  message OS {
+    // The user's operating system. This should be one of:
+    // - Android
+    // - Windows NT
+    // - Linux (includes ChromeOS)
+    // - iPhone OS
+    // - Mac OS X
+    optional string name = 1;
+
+    // The version of the OS.  The meaning of this field is OS-dependent.
+    optional string version = 2;
+
+    // The fingerprint of the build.  This field is used only on Android.
+    optional string fingerprint = 3;
+
+    // Whether the version of iOS appears to be "jailbroken". This field is
+    // used only on iOS. Chrome for iOS detects whether device contains a
+    // DynamicLibraries/ directory. It's a necessary but insufficient indicator
+    // of whether the operating system has been jailbroken.
+    optional bool is_jailbroken = 4;
+  }
+  optional OS os = 5;
+
+  // Next tag for Hardware: 18
+  // Information on the user's hardware.
+  message Hardware {
+    // The CPU architecture (x86, PowerPC, x86_64, ...)
+    optional string cpu_architecture = 1;
+
+    // The amount of RAM present on the system, in megabytes.
+    optional int64 system_ram_mb = 2;
+
+    // The base memory address that chrome.dll was loaded at.
+    // (Logged only on Windows.)
+    optional int64 dll_base = 3;
+
+    // The Chrome OS device hardware class ID is a unique string associated with
+    // each Chrome OS device product revision generally assigned at hardware
+    // qualification time.  The hardware class effectively identifies the
+    // configured system components such as CPU, WiFi adapter, etc.
+    //
+    // An example of such a hardware class is "IEC MARIO PONY 6101".  An
+    // internal database associates this hardware class with the qualified
+    // device specifications including OEM information, schematics, hardware
+    // qualification reports, test device tags, etc.
+    optional string hardware_class = 4;
+
+    // The number of physical screens.
+    optional int32 screen_count = 5;
+
+    // The screen dimensions of the primary screen, in pixels.
+    optional int32 primary_screen_width = 6;
+    optional int32 primary_screen_height = 7;
+
+    // The device scale factor of the primary screen.
+    optional float primary_screen_scale_factor = 12;
+
+    // Max DPI for any attached screen. (Windows only)
+    optional float max_dpi_x = 9;
+    optional float max_dpi_y = 10;
+
+    // Information on the CPU obtained by CPUID.
+    message CPU {
+      // A 12 character string naming the vendor, e.g. "GeniuneIntel".
+      optional string vendor_name = 1;
+
+      // The signature reported by CPUID (from EAX).
+      optional uint32 signature = 2;
+
+      // Number of logical processors/cores on the current machine.
+      optional uint32 num_cores = 3;
+    }
+    optional CPU cpu = 13;
+
+    // Information on the GPU
+    message Graphics {
+      // The GPU manufacturer's vendor id.
+      optional uint32 vendor_id = 1;
+
+      // The GPU manufacturer's device id for the chip set.
+      optional uint32 device_id = 2;
+
+      // The driver version on the GPU.
+      optional string driver_version = 3;
+
+      // The driver date on the GPU.
+      optional string driver_date = 4;
+
+      // The GL_VENDOR string. An example of a gl_vendor string is
+      // "Imagination Technologies". "" if we are not using OpenGL.
+      optional string gl_vendor = 6;
+
+      // The GL_RENDERER string. An example of a gl_renderer string is
+      // "PowerVR SGX 540". "" if we are not using OpenGL.
+      optional string gl_renderer = 7;
+    }
+    optional Graphics gpu = 8;
+
+    // Information about Bluetooth devices paired with the system.
+    message Bluetooth {
+      // Whether Bluetooth is present on this system.
+      optional bool is_present = 1;
+
+      // Whether Bluetooth is enabled on this system.
+      optional bool is_enabled = 2;
+
+      // Describes a paired device.
+      message PairedDevice {
+        // Assigned class of the device. This is a bitfield according to the
+        // Bluetooth specification available at the following URL:
+        // https://www.bluetooth.org/en-us/specification/assigned-numbers-overview/baseband
+        optional uint32 bluetooth_class = 1;
+
+        // Decoded device type.
+        enum Type {
+          DEVICE_UNKNOWN = 0;
+          DEVICE_COMPUTER = 1;
+          DEVICE_PHONE = 2;
+          DEVICE_MODEM = 3;
+          DEVICE_AUDIO = 4;
+          DEVICE_CAR_AUDIO = 5;
+          DEVICE_VIDEO = 6;
+          DEVICE_PERIPHERAL = 7;
+          DEVICE_JOYSTICK = 8;
+          DEVICE_GAMEPAD = 9;
+          DEVICE_KEYBOARD = 10;
+          DEVICE_MOUSE = 11;
+          DEVICE_TABLET = 12;
+          DEVICE_KEYBOARD_MOUSE_COMBO = 13;
+        }
+        optional Type type = 2;
+
+        // Vendor prefix of the Bluetooth address, these are OUI registered by
+        // the IEEE and are encoded with the first byte in bits 16-23, the
+        // second byte in bits 8-15 and the third byte in bits 0-7.
+        //
+        // ie. Google's OUI (00:1A:11) is encoded as 0x00001A11
+        optional uint32 vendor_prefix = 4;
+
+        // The Vendor ID of a device, returned in vendor_id below, can be
+        // either allocated by the Bluetooth SIG or USB IF, providing two
+        // completely overlapping namespaces for identifiers.
+        //
+        // This field should be read along with vendor_id to correctly
+        // identify the vendor. For example Google is identified by either
+        // vendor_id_source = VENDOR_ID_BLUETOOTH, vendor_id = 0x00E0 or
+        // vendor_id_source = VENDOR_ID_USB, vendor_id = 0x18D1.
+        //
+        // If the device does not support the Device ID specification the
+        // unknown value will be set.
+        enum VendorIDSource {
+          VENDOR_ID_UNKNOWN = 0;
+          VENDOR_ID_BLUETOOTH = 1;
+          VENDOR_ID_USB = 2;
+        }
+        optional VendorIDSource vendor_id_source = 8;
+
+        // Vendor ID of the device, where available.
+        optional uint32 vendor_id = 5;
+
+        // Product ID of the device, where available.
+        optional uint32 product_id = 6;
+
+        // Device ID of the device, generally the release or version number in
+        // BCD format, where available.
+        optional uint32 device_id = 7;
+      }
+      repeated PairedDevice paired_device = 3;
+    }
+    optional Bluetooth bluetooth = 11;
+
+    // Whether the internal display produces touch events. Omitted if unknown.
+    // Logged on ChromeOS only.
+    optional bool internal_display_supports_touch = 14;
+
+    // Vendor ids and product ids of external touchscreens.
+    message TouchScreen {
+      // Touch screen vendor id.
+      optional uint32 vendor_id = 1;
+      // Touch screen product id.
+      optional uint32 product_id = 2;
+    }
+    // Lists vendor and product ids of external touchscreens.
+    // Logged on ChromeOS only.
+    repeated TouchScreen external_touchscreen = 15;
+
+    // Drive messages are currently logged on Windows 7+, iOS, and Android.
+    message Drive {
+      // Whether this drive incurs a time penalty when randomly accessed. This
+      // should be true for spinning disks but false for SSDs or other
+      // flash-based drives.
+      optional bool has_seek_penalty = 1;
+    }
+    // The drive that the application executable was loaded from.
+    optional Drive app_drive = 16;
+    // The drive that the current user data directory was loaded from.
+    optional Drive user_data_drive = 17;
+  }
+  optional Hardware hardware = 6;
+
+  // Information about the network connection.
+  message Network {
+    // Set to true if connection_type changed during the lifetime of the log.
+    optional bool connection_type_is_ambiguous = 1;
+
+    // See net::NetworkChangeNotifier::ConnectionType.
+    enum ConnectionType {
+      CONNECTION_UNKNOWN = 0;
+      CONNECTION_ETHERNET = 1;
+      CONNECTION_WIFI = 2;
+      CONNECTION_2G = 3;
+      CONNECTION_3G = 4;
+      CONNECTION_4G = 5;
+      CONNECTION_BLUETOOTH = 6;
+    }
+    // The connection type according to NetworkChangeNotifier.
+    optional ConnectionType connection_type = 2;
+
+    // Set to true if wifi_phy_layer_protocol changed during the lifetime of the log.
+    optional bool wifi_phy_layer_protocol_is_ambiguous = 3;
+
+    // See net::WifiPHYLayerProtocol.
+    enum WifiPHYLayerProtocol {
+      WIFI_PHY_LAYER_PROTOCOL_NONE = 0;
+      WIFI_PHY_LAYER_PROTOCOL_ANCIENT = 1;
+      WIFI_PHY_LAYER_PROTOCOL_A = 2;
+      WIFI_PHY_LAYER_PROTOCOL_B = 3;
+      WIFI_PHY_LAYER_PROTOCOL_G = 4;
+      WIFI_PHY_LAYER_PROTOCOL_N = 5;
+      WIFI_PHY_LAYER_PROTOCOL_UNKNOWN = 6;
+    }
+    // The physical layer mode of the associated wifi access point, if any.
+    optional WifiPHYLayerProtocol wifi_phy_layer_protocol = 4;
+
+    // Describe wifi access point information.
+    message WifiAccessPoint {
+      // Vendor prefix of the access point's BSSID, these are OUIs
+      // (Organizationally Unique Identifiers) registered by
+      // the IEEE and are encoded with the first byte in bits 16-23, the
+      // second byte in bits 8-15 and the third byte in bits 0-7.
+      optional uint32 vendor_prefix = 1;
+
+      // Access point seurity mode definitions.
+      enum SecurityMode {
+        SECURITY_UNKNOWN = 0;
+        SECURITY_WPA = 1;
+        SECURITY_WEP = 2;
+        SECURITY_RSN = 3;
+        SECURITY_802_1X = 4;
+        SECURITY_PSK = 5;
+        SECURITY_NONE = 6;
+      }
+      // The security mode of the access point.
+      optional SecurityMode security_mode = 2;
+
+      // Vendor specific information.
+      message VendorInformation {
+        // The model number, for example "0".
+        optional string model_number = 1;
+
+        // The model name (sometimes the same as the model_number),
+        // for example "WZR-HP-AG300H".
+        optional string model_name = 2;
+
+        // The device name (sometimes the same as the model_number),
+        // for example "Dummynet"
+        optional string device_name = 3;
+
+        // The list of vendor-specific OUIs (Organziationally Unqiue
+        // Identifiers). These are provided by the vendor through WPS
+        // (Wireless Provisioning Service) information elements, which
+        // identifies the content of the element.
+        repeated uint32 element_identifier = 4;
+      }
+      // The wireless access point vendor information.
+      optional VendorInformation vendor_info = 3;
+    }
+    // Information of the wireless AP that device is connected to.
+    optional WifiAccessPoint access_point_info = 5;
+  }
+  optional Network network = 13;
+
+  // Information on the Google Update install that is managing this client.
+  message GoogleUpdate {
+    // Whether the Google Update install is system-level or user-level.
+    optional bool is_system_install = 1;
+
+    // The date at which Google Update last started performing an automatic
+    // update check, in seconds since the Unix epoch.
+    optional int64 last_automatic_start_timestamp = 2;
+
+    // The date at which Google Update last successfully sent an update check
+    // and recieved an intact response from the server, in seconds since the
+    // Unix epoch. (The updates don't need to be successfully installed.)
+    optional int64 last_update_check_timestamp = 3;
+
+    // Describes a product being managed by Google Update. (This can also
+    // describe Google Update itself.)
+    message ProductInfo {
+      // The current version of the product that is installed.
+      optional string version = 1;
+
+      // The date at which Google Update successfully updated this product,
+      // stored in seconds since the Unix epoch.  This is updated when an update
+      // is successfully applied, or if the server reports that no update
+      // is available.
+      optional int64 last_update_success_timestamp = 2;
+
+      // The result reported by the product updater on its last run.
+      enum InstallResult {
+        INSTALL_RESULT_SUCCESS = 0;
+        INSTALL_RESULT_FAILED_CUSTOM_ERROR = 1;
+        INSTALL_RESULT_FAILED_MSI_ERROR = 2;
+        INSTALL_RESULT_FAILED_SYSTEM_ERROR = 3;
+        INSTALL_RESULT_EXIT_CODE = 4;
+      }
+      optional InstallResult last_result = 3;
+
+      // The error code reported by the product updater on its last run.  This
+      // will typically be a error code specific to the product installer.
+      optional int32 last_error = 4;
+
+      // The extra error code reported by the product updater on its last run.
+      // This will typically be a Win32 error code.
+      optional int32 last_extra_error = 5;
+    }
+    optional ProductInfo google_update_status = 4;
+    optional ProductInfo client_status = 5;
+  }
+  optional GoogleUpdate google_update = 11;
+
+  // Information on all installed plugins.
+  message Plugin {
+    // The plugin's self-reported name and filename (without path).
+    optional string name = 1;
+    optional string filename = 2;
+
+    // The plugin's version.
+    optional string version = 3;
+
+    // True if the plugin is disabled.
+    // If a client has multiple local Chrome user accounts, this is logged based
+    // on the first user account launched during the current session.
+    optional bool is_disabled = 4;
+
+    // True if the plugin is PPAPI.
+    optional bool is_pepper = 5;
+  }
+  repeated Plugin plugin = 7;
+
+  // Figures that can be used to generate application stability metrics.
+  // All values are counts of events since the last time that these
+  // values were reported.
+  // Next tag: 24
+  message Stability {
+    // Total amount of time that the program was running, in seconds,
+    // since the last time a log was recorded, as measured using a client-side
+    // clock implemented via TimeTicks, which guarantees that it is monotonic
+    // and does not jump if the user changes his/her clock.  The TimeTicks
+    // implementation also makes the clock not count time the computer is
+    // suspended.
+    optional int64 incremental_uptime_sec = 1;
+
+    // Total amount of time that the program was running, in seconds,
+    // since startup, as measured using a client-side clock implemented
+    // via TimeTicks, which guarantees that it is monotonic and does not
+    // jump if the user changes his/her clock.  The TimeTicks implementation
+    // also makes the clock not count time the computer is suspended.
+    // This field was added for M-35.
+    optional int64 uptime_sec = 23;
+
+    // Page loads along with renderer crashes and hangs, since page load count
+    // roughly corresponds to usage.
+    optional int32 page_load_count = 2;
+    optional int32 renderer_crash_count = 3;
+    optional int32 renderer_hang_count = 4;
+
+    // Number of renderer crashes that were for extensions. These crashes are
+    // not counted in renderer_crash_count.
+    optional int32 extension_renderer_crash_count = 5;
+
+    // Number of non-renderer child process crashes.
+    optional int32 child_process_crash_count = 6;
+
+    // Number of times the browser has crashed while logged in as the "other
+    // user" (guest) account.
+    // Logged on ChromeOS only.
+    optional int32 other_user_crash_count = 7;
+
+    // Number of times the kernel has crashed.
+    // Logged on ChromeOS only.
+    optional int32 kernel_crash_count = 8;
+
+    // Number of times the system has shut down uncleanly.
+    // Logged on ChromeOS only.
+    optional int32 unclean_system_shutdown_count = 9;
+
+    //
+    // All the remaining fields in the Stability are recorded at most once per
+    // client session.
+    //
+
+    // The number of times the program was launched.
+    // This will typically be equal to 1.  However, it is possible that Chrome
+    // was unable to upload stability metrics for previous launches (e.g. due to
+    // crashing early during startup), and hence this value might be greater
+    // than 1.
+    optional int32 launch_count = 15;
+    // The number of times that it didn't exit cleanly (which we assume to be
+    // mostly crashes).
+    optional int32 crash_count = 16;
+
+    // The number of times the program began, but did not complete, the shutdown
+    // process.  (For example, this may occur when Windows is shutting down, and
+    // it only gives the process a few seconds to clean up.)
+    optional int32 incomplete_shutdown_count = 17;
+
+    // The number of times the program was able register with breakpad crash
+    // services.
+    optional int32 breakpad_registration_success_count = 18;
+
+    // The number of times the program failed to register with breakpad crash
+    // services.  If crash registration fails then when the program crashes no
+    // crash report will be generated.
+    optional int32 breakpad_registration_failure_count = 19;
+
+    // The number of times the program has run under a debugger.  This should
+    // be an exceptional condition.  Running under a debugger prevents crash
+    // dumps from being generated.
+    optional int32 debugger_present_count = 20;
+
+    // The number of times the program has run without a debugger attached.
+    // This should be most common scenario and should be very close to
+    // |launch_count|.
+    optional int32 debugger_not_present_count = 21;
+
+    // Stability information for all installed plugins.
+    message PluginStability {
+      // The relevant plugin's information (name, etc.)
+      optional Plugin plugin = 1;
+
+      // The number of times this plugin's process was launched.
+      optional int32 launch_count = 2;
+
+      // The number of times this plugin was instantiated on a web page.
+      // This will be >= |launch_count|.
+      // (A page load with multiple sections drawn by this plugin will
+      // increase this count multiple times.)
+      optional int32 instance_count = 3;
+
+      // The number of times this plugin process crashed.
+      // This value will be <= |launch_count|.
+      optional int32 crash_count = 4;
+
+      // The number of times this plugin could not be loaded.
+      optional int32 loading_error_count = 5;
+    }
+    repeated PluginStability plugin_stability = 22;
+  }
+  optional Stability stability = 8;
+
+  // Description of a field trial or experiment that the user is currently
+  // enrolled in.
+  // All metrics reported in this upload can potentially be influenced by the
+  // field trial.
+  message FieldTrial {
+    // The name of the field trial, as a 32-bit identifier.
+    // Currently, the identifier is a hash of the field trial's name.
+    optional fixed32 name_id = 1;
+
+    // The user's group within the field trial, as a 32-bit identifier.
+    // Currently, the identifier is a hash of the group's name.
+    optional fixed32 group_id = 2;
+  }
+  repeated FieldTrial field_trial = 9;
+
+  // Information about the A/V output device(s) (typically just a TV).
+  // However, a configuration may have one or more intermediate A/V devices
+  // between the source device and the TV (e.g. an A/V receiver, video
+  // processor, etc.).
+  message ExternalAudioVideoDevice {
+    // The manufacturer name (possibly encoded as a 3-letter code, e.g. "YMH"
+    // for Yamaha).
+    optional string manufacturer_name = 1;
+
+    // The model name (e.g. "RX-V1900"). Some devices may report generic names
+    // like "receiver" or use the full manufacturer name (e.g "PHILIPS").
+    optional string model_name = 2;
+
+    // The product code (e.g. "0218").
+    optional string product_code = 3;
+
+    // The device types. A single device can have multiple types (e.g. a set-top
+    // box could be both a tuner and a player).  The same type may even be
+    // repeated (e.g a device that reports two tuners).
+    enum AVDeviceType {
+      AV_DEVICE_TYPE_UNKNOWN = 0;
+      AV_DEVICE_TYPE_TV = 1;
+      AV_DEVICE_TYPE_RECORDER = 2;
+      AV_DEVICE_TYPE_TUNER = 3;
+      AV_DEVICE_TYPE_PLAYER = 4;
+      AV_DEVICE_TYPE_AUDIO_SYSTEM = 5;
+    }
+    repeated AVDeviceType av_device_type = 4;
+
+    // The year of manufacture.
+    optional int32 manufacture_year = 5;
+
+    // The week of manufacture.
+    // Note: per the Wikipedia EDID article, numbering for this field may not
+    // be consistent between manufacturers.
+    optional int32 manufacture_week = 6;
+
+    // Max horizontal resolution in pixels.
+    optional int32 horizontal_resolution = 7;
+
+    // Max vertical resolution in pixels.
+    optional int32 vertical_resolution = 8;
+
+    // Audio capabilities of the device.
+    // Ref: http://en.wikipedia.org/wiki/Extended_display_identification_data
+    message AudioDescription {
+      // Audio format
+      enum AudioFormat {
+        AUDIO_FORMAT_UNKNOWN = 0;
+        AUDIO_FORMAT_LPCM = 1;
+        AUDIO_FORMAT_AC_3 = 2;
+        AUDIO_FORMAT_MPEG1 = 3;
+        AUDIO_FORMAT_MP3 = 4;
+        AUDIO_FORMAT_MPEG2 = 5;
+        AUDIO_FORMAT_AAC = 6;
+        AUDIO_FORMAT_DTS = 7;
+        AUDIO_FORMAT_ATRAC = 8;
+        AUDIO_FORMAT_ONE_BIT = 9;
+        AUDIO_FORMAT_DD_PLUS = 10;
+        AUDIO_FORMAT_DTS_HD = 11;
+        AUDIO_FORMAT_MLP_DOLBY_TRUEHD = 12;
+        AUDIO_FORMAT_DST_AUDIO = 13;
+        AUDIO_FORMAT_MICROSOFT_WMA_PRO = 14;
+      }
+      optional AudioFormat audio_format = 1;
+
+      // Number of channels (e.g. 1, 2, 8, etc.).
+      optional int32 num_channels = 2;
+
+      // Supported sample frequencies in Hz (e.g. 32000, 44100, etc.).
+      // Multiple frequencies may be specified.
+      repeated int32 sample_frequency_hz = 3;
+
+      // Maximum bit rate in bits/s.
+      optional int32 max_bit_rate_per_second = 4;
+
+      // Bit depth (e.g. 16, 20, 24, etc.).
+      optional int32 bit_depth = 5;
+    }
+    repeated AudioDescription audio_description = 9;
+
+    // The position in AV setup.
+    // A value of 0 means this device is the TV.
+    // A value of 1 means this device is directly connected to one of
+    // the TV's inputs.
+    // Values > 1 indicate there are 1 or more devices between this device
+    // and the TV.
+    optional int32 position_in_setup = 10;
+
+    // Whether this device is in the path to the TV.
+    optional bool is_in_path_to_tv = 11;
+
+    // The CEC version the device supports.
+    // CEC stands for Consumer Electronics Control, a part of the HDMI
+    // specification.  Not all HDMI devices support CEC.
+    // Only devices that support CEC will report a value here.
+    optional int32 cec_version = 12;
+
+    // This message reports CEC commands seen by a device.
+    // After each log is sent, this information is cleared and gathered again.
+    // By collecting CEC status information by opcode we can determine
+    // which CEC features can be supported.
+    message CECCommand {
+      // The CEC command opcode.  CEC supports up to 256 opcodes.
+      // We add only one CECCommand message per unique opcode.  Only opcodes
+      // seen by the device will be reported. The remainder of the message
+      // accumulates status for this opcode (and device).
+      optional int32 opcode = 1;
+
+      // The total number of commands received from the external device.
+      optional int32 num_received_direct = 2;
+
+      // The number of commands received from the external device as part of a
+      // broadcast message.
+      optional int32 num_received_broadcast = 3;
+
+      // The total number of commands sent to the external device.
+      optional int32 num_sent_direct = 4;
+
+      // The number of commands sent to the external device as part of a
+      // broadcast message.
+      optional int32 num_sent_broadcast = 5;
+
+      // The number of aborted commands for unknown reasons.
+      optional int32 num_aborted_unknown_reason = 6;
+
+      // The number of aborted commands because of an unrecognized opcode.
+      optional int32 num_aborted_unrecognized = 7;
+    }
+    repeated CECCommand cec_command = 13;
+  }
+  repeated ExternalAudioVideoDevice external_audio_video_device = 14;
+
+  // Information about the current wireless access point. Collected directly
+  // from the wireless access point via standard apis if the device is
+  // connected to the Internet wirelessly. Introduced for Chrome on TV devices
+  // but also can be collected by ChromeOS, Android or other clients.
+  message ExternalAccessPoint {
+    // The manufacturer name, for example "ASUSTeK Computer Inc.".
+    optional string manufacturer = 1;
+
+    // The model name, for example "Wi-Fi Protected Setup Router".
+    optional string model_name = 2;
+
+    // The model number, for example "RT-N16".
+    optional string model_number = 3;
+
+    // The device name (sometime same as model_number), for example "RT-N16".
+    optional string device_name = 4;
+  }
+  optional ExternalAccessPoint external_access_point = 15;
+
+  // Number of users currently signed into a multiprofile session.
+  // A zero value indicates that the user count changed while the log is open.
+  // Logged only on ChromeOS.
+  optional uint32 multi_profile_user_count = 17;
+
+  // Information about extensions that are installed, masked to provide better
+  // privacy.  Only extensions from a single profile are reported; this will
+  // generally be the profile used when the browser is started.  The profile
+  // reported on will remain consistent at least until the browser is
+  // relaunched (or the profile is deleted by the user).
+  //
+  // Each client first picks a value for client_key derived from its UMA
+  // client_id:
+  //   client_key = client_id % 4096
+  // Then, each installed extension is mapped into a hash bucket according to
+  //   bucket = CityHash64(StringPrintf("%d:%s",
+  //                                    client_key, extension_id)) % 1024
+  // The client reports the set of hash buckets occupied by all installed
+  // extensions.  If multiple extensions map to the same bucket, that bucket is
+  // still only reported once.
+  repeated int32 occupied_extension_bucket = 18;
+
+  // The state of loaded extensions for this system. The system can have either
+  // no applicable extensions, extensions only from the webstore and verified by
+  // the webstore, extensions only from the webstore but not verified, or
+  // extensions not from the store. If there is a single off-store extension,
+  // then HAS_OFFSTORE is reported. This should be kept in sync with the
+  // corresponding enum in chrome/browser/metrics/extensions_metrics_provider.cc
+  enum ExtensionsState {
+    NO_EXTENSIONS = 0;
+    NO_OFFSTORE_VERIFIED = 1;
+    NO_OFFSTORE_UNVERIFIED = 2;
+    HAS_OFFSTORE = 3;
+  }
+  optional ExtensionsState offstore_extensions_state = 19;
+}
diff --git a/metricsd/uploader/proto/user_action_event.proto b/metricsd/uploader/proto/user_action_event.proto
new file mode 100644
index 0000000..464f3c8
--- /dev/null
+++ b/metricsd/uploader/proto/user_action_event.proto
@@ -0,0 +1,35 @@
+/*
+ * 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.
+ */
+//
+// Stores information about an event that occurs in response to a user action,
+// e.g. an interaction with a browser UI element.
+
+syntax = "proto2";
+
+option optimize_for = LITE_RUNTIME;
+option java_outer_classname = "UserActionEventProtos";
+option java_package = "org.chromium.components.metrics";
+
+package metrics;
+
+// Next tag: 3
+message UserActionEventProto {
+  // The name of the action, hashed.
+  optional fixed64 name_hash = 1;
+
+  // The timestamp for the event, in seconds since the epoch.
+  optional int64 time = 2;
+}
diff --git a/base/test_utils.h b/metricsd/uploader/sender.h
similarity index 63%
copy from base/test_utils.h
copy to metricsd/uploader/sender.h
index 132d3a7..369c9c2 100644
--- a/base/test_utils.h
+++ b/metricsd/uploader/sender.h
@@ -14,19 +14,17 @@
  * limitations under the License.
  */
 
-#ifndef TEST_UTILS_H
-#define TEST_UTILS_H
+#ifndef METRICS_UPLOADER_SENDER_H_
+#define METRICS_UPLOADER_SENDER_H_
 
-class TemporaryFile {
+#include <string>
+
+// Abstract class for a Sender that uploads a metrics message.
+class Sender {
  public:
-  TemporaryFile();
-  ~TemporaryFile();
-
-  int fd;
-  char filename[1024];
-
- private:
-  void init(const char* tmp_dir);
+  virtual ~Sender() {}
+  // Sends a message |content| with its sha1 hash |hash|
+  virtual bool Send(const std::string& content, const std::string& hash) = 0;
 };
 
-#endif // TEST_UTILS_H
+#endif  // METRICS_UPLOADER_SENDER_H_
diff --git a/metricsd/uploader/sender_http.cc b/metricsd/uploader/sender_http.cc
new file mode 100644
index 0000000..953afc1
--- /dev/null
+++ b/metricsd/uploader/sender_http.cc
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "uploader/sender_http.h"
+
+#include <string>
+
+#include <base/logging.h>
+#include <base/strings/string_number_conversions.h>
+#include <chromeos/http/http_utils.h>
+#include <chromeos/mime_utils.h>
+
+HttpSender::HttpSender(const std::string server_url)
+    : server_url_(server_url) {}
+
+bool HttpSender::Send(const std::string& content,
+                      const std::string& content_hash) {
+  const std::string hash =
+      base::HexEncode(content_hash.data(), content_hash.size());
+
+  chromeos::http::HeaderList headers = {{"X-Chrome-UMA-Log-SHA1", hash}};
+  chromeos::ErrorPtr error;
+  auto response = chromeos::http::PostTextAndBlock(
+      server_url_,
+      content,
+      chromeos::mime::application::kWwwFormUrlEncoded,
+      headers,
+      chromeos::http::Transport::CreateDefault(),
+      &error);
+  if (!response || response->ExtractDataAsString() != "OK") {
+    if (error) {
+      DLOG(ERROR) << "Failed to send data: " << error->GetMessage();
+    }
+    return false;
+  }
+  return true;
+}
diff --git a/metricsd/uploader/sender_http.h b/metricsd/uploader/sender_http.h
new file mode 100644
index 0000000..6249d90
--- /dev/null
+++ b/metricsd/uploader/sender_http.h
@@ -0,0 +1,41 @@
+/*
+ * 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 METRICS_UPLOADER_SENDER_HTTP_H_
+#define METRICS_UPLOADER_SENDER_HTTP_H_
+
+#include <string>
+
+#include <base/macros.h>
+
+#include "uploader/sender.h"
+
+// Sender implemented using http_utils from libchromeos
+class HttpSender : public Sender {
+ public:
+  explicit HttpSender(std::string server_url);
+  ~HttpSender() override = default;
+  // Sends |content| whose SHA1 hash is |hash| to server_url with a synchronous
+  // POST request to server_url.
+  bool Send(const std::string& content, const std::string& hash) override;
+
+ private:
+  const std::string server_url_;
+
+  DISALLOW_COPY_AND_ASSIGN(HttpSender);
+};
+
+#endif  // METRICS_UPLOADER_SENDER_HTTP_H_
diff --git a/metricsd/uploader/system_profile_cache.cc b/metricsd/uploader/system_profile_cache.cc
new file mode 100644
index 0000000..35910d7
--- /dev/null
+++ b/metricsd/uploader/system_profile_cache.cc
@@ -0,0 +1,164 @@
+/*
+ * 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 "uploader/system_profile_cache.h"
+
+#include <base/files/file_util.h>
+#include <base/guid.h>
+#include <base/logging.h>
+#include <base/strings/string_number_conversions.h>
+#include <base/strings/string_util.h>
+#include <base/sys_info.h>
+#include <string>
+#include <vector>
+
+#include "constants.h"
+#include "persistent_integer.h"
+#include "uploader/metrics_log_base.h"
+#include "uploader/proto/chrome_user_metrics_extension.pb.h"
+
+namespace {
+
+const char kPersistentSessionIdFilename[] = "Sysinfo.SessionId";
+
+}  // namespace
+
+std::string ChannelToString(
+    const metrics::SystemProfileProto_Channel& channel) {
+  switch (channel) {
+    case metrics::SystemProfileProto::CHANNEL_STABLE:
+    return "STABLE";
+  case metrics::SystemProfileProto::CHANNEL_DEV:
+    return "DEV";
+  case metrics::SystemProfileProto::CHANNEL_BETA:
+    return "BETA";
+  case metrics::SystemProfileProto::CHANNEL_CANARY:
+    return "CANARY";
+  default:
+    return "UNKNOWN";
+  }
+}
+
+SystemProfileCache::SystemProfileCache()
+    : initialized_(false),
+    testing_(false),
+    config_root_("/"),
+    session_id_(new chromeos_metrics::PersistentInteger(
+        kPersistentSessionIdFilename)) {
+}
+
+SystemProfileCache::SystemProfileCache(bool testing,
+                                       const std::string& config_root)
+    : initialized_(false),
+      testing_(testing),
+      config_root_(config_root),
+      session_id_(new chromeos_metrics::PersistentInteger(
+          kPersistentSessionIdFilename)) {
+}
+
+bool SystemProfileCache::Initialize() {
+  CHECK(!initialized_)
+      << "this should be called only once in the metrics_daemon lifetime.";
+
+  if (!base::SysInfo::GetLsbReleaseValue("BRILLO_BUILD_TARGET_ID",
+                                         &profile_.build_target_id)) {
+    LOG(ERROR) << "Could not initialize system profile.";
+    return false;
+  }
+
+  std::string channel;
+  if (!base::SysInfo::GetLsbReleaseValue("BRILLO_CHANNEL", &channel) ||
+      !base::SysInfo::GetLsbReleaseValue("BRILLO_VERSION", &profile_.version)) {
+    // If the channel or version is missing, the image is not official.
+    // In this case, set the channel to unknown and the version to 0.0.0.0 to
+    // avoid polluting the production data.
+    channel = "";
+    profile_.version = metrics::kDefaultVersion;
+
+  }
+  profile_.client_id =
+      testing_ ? "client_id_test" :
+      GetPersistentGUID(metrics::kMetricsGUIDFilePath);
+  profile_.hardware_class = "unknown";
+  profile_.channel = ProtoChannelFromString(channel);
+
+  // Increment the session_id everytime we initialize this. If metrics_daemon
+  // does not crash, this should correspond to the number of reboots of the
+  // system.
+  session_id_->Add(1);
+  profile_.session_id = static_cast<int32_t>(session_id_->Get());
+
+  initialized_ = true;
+  return initialized_;
+}
+
+bool SystemProfileCache::InitializeOrCheck() {
+  return initialized_ || Initialize();
+}
+
+void SystemProfileCache::Populate(
+    metrics::ChromeUserMetricsExtension* metrics_proto) {
+  CHECK(metrics_proto);
+  CHECK(InitializeOrCheck())
+      << "failed to initialize system information.";
+
+  // The client id is hashed before being sent.
+  metrics_proto->set_client_id(
+      metrics::MetricsLogBase::Hash(profile_.client_id));
+  metrics_proto->set_session_id(profile_.session_id);
+
+  // Sets the product id.
+  metrics_proto->set_product(9);
+
+  metrics::SystemProfileProto* profile_proto =
+      metrics_proto->mutable_system_profile();
+  profile_proto->mutable_hardware()->set_hardware_class(
+      profile_.hardware_class);
+  profile_proto->set_app_version(profile_.version);
+  profile_proto->set_channel(profile_.channel);
+  metrics::SystemProfileProto_BrilloDeviceData* device_data =
+      profile_proto->mutable_brillo();
+  device_data->set_build_target_id(profile_.build_target_id);
+}
+
+std::string SystemProfileCache::GetPersistentGUID(
+    const std::string& filename) {
+  std::string guid;
+  base::FilePath filepath(filename);
+  if (!base::ReadFileToString(filepath, &guid)) {
+    guid = base::GenerateGUID();
+    // If we can't read or write the file, the guid will not be preserved during
+    // the next reboot. Crash.
+    CHECK(base::WriteFile(filepath, guid.c_str(), guid.size()));
+  }
+  return guid;
+}
+
+metrics::SystemProfileProto_Channel SystemProfileCache::ProtoChannelFromString(
+    const std::string& channel) {
+  if (channel == "stable") {
+    return metrics::SystemProfileProto::CHANNEL_STABLE;
+  } else if (channel == "dev") {
+    return metrics::SystemProfileProto::CHANNEL_DEV;
+  } else if (channel == "beta") {
+    return metrics::SystemProfileProto::CHANNEL_BETA;
+  } else if (channel == "canary") {
+    return metrics::SystemProfileProto::CHANNEL_CANARY;
+  }
+
+  DLOG(INFO) << "unknown channel: " << channel;
+  return metrics::SystemProfileProto::CHANNEL_UNKNOWN;
+}
diff --git a/metricsd/uploader/system_profile_cache.h b/metricsd/uploader/system_profile_cache.h
new file mode 100644
index 0000000..c53a18e
--- /dev/null
+++ b/metricsd/uploader/system_profile_cache.h
@@ -0,0 +1,85 @@
+/*
+ * 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 METRICS_UPLOADER_SYSTEM_PROFILE_CACHE_H_
+#define METRICS_UPLOADER_SYSTEM_PROFILE_CACHE_H_
+
+#include <stdint.h>
+
+#include <string>
+
+#include "base/compiler_specific.h"
+#include "base/gtest_prod_util.h"
+#include "base/memory/scoped_ptr.h"
+#include "persistent_integer.h"
+#include "uploader/proto/system_profile.pb.h"
+#include "uploader/system_profile_setter.h"
+
+namespace metrics {
+class ChromeUserMetricsExtension;
+}
+
+struct SystemProfile {
+  std::string version;
+  std::string hardware_class;
+  std::string client_id;
+  int session_id;
+  metrics::SystemProfileProto::Channel channel;
+  std::string build_target_id;
+};
+
+// Retrieves general system informations needed by the protobuf for context and
+// remembers them to avoid expensive calls.
+//
+// The cache is populated lazily. The only method needed is Populate.
+class SystemProfileCache : public SystemProfileSetter {
+ public:
+  SystemProfileCache();
+
+  SystemProfileCache(bool testing, const std::string& config_root);
+
+  // Populates the ProfileSystem protobuf with system information.
+  void Populate(metrics::ChromeUserMetricsExtension* metrics_proto) override;
+
+  // Converts a string representation of the channel to a
+  // SystemProfileProto_Channel
+  static metrics::SystemProfileProto_Channel ProtoChannelFromString(
+      const std::string& channel);
+
+  // Gets the persistent GUID and create it if it has not been created yet.
+  static std::string GetPersistentGUID(const std::string& filename);
+
+ private:
+  friend class UploadServiceTest;
+  FRIEND_TEST(UploadServiceTest, ExtractChannelFromDescription);
+  FRIEND_TEST(UploadServiceTest, ReadKeyValueFromFile);
+  FRIEND_TEST(UploadServiceTest, SessionIdIncrementedAtInitialization);
+  FRIEND_TEST(UploadServiceTest, ValuesInConfigFileAreSent);
+
+  // Fetches all informations and populates |profile_|
+  bool Initialize();
+
+  // Initializes |profile_| only if it has not been yet initialized.
+  bool InitializeOrCheck();
+
+  bool initialized_;
+  bool testing_;
+  std::string config_root_;
+  scoped_ptr<chromeos_metrics::PersistentInteger> session_id_;
+  SystemProfile profile_;
+};
+
+#endif  // METRICS_UPLOADER_SYSTEM_PROFILE_CACHE_H_
diff --git a/metricsd/uploader/system_profile_setter.h b/metricsd/uploader/system_profile_setter.h
new file mode 100644
index 0000000..cd311a4
--- /dev/null
+++ b/metricsd/uploader/system_profile_setter.h
@@ -0,0 +1,33 @@
+/*
+ * 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 METRICS_UPLOADER_SYSTEM_PROFILE_SETTER_H_
+#define METRICS_UPLOADER_SYSTEM_PROFILE_SETTER_H_
+
+namespace metrics {
+class ChromeUserMetricsExtension;
+}
+
+// Abstract class used to delegate populating SystemProfileProto with system
+// information to simplify testing.
+class SystemProfileSetter {
+ public:
+  virtual ~SystemProfileSetter() {}
+  // Populates the protobuf with system informations.
+  virtual void Populate(metrics::ChromeUserMetricsExtension* profile_proto) = 0;
+};
+
+#endif  // METRICS_UPLOADER_SYSTEM_PROFILE_SETTER_H_
diff --git a/metricsd/uploader/upload_service.cc b/metricsd/uploader/upload_service.cc
new file mode 100644
index 0000000..63b5789
--- /dev/null
+++ b/metricsd/uploader/upload_service.cc
@@ -0,0 +1,236 @@
+/*
+ * 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 "uploader/upload_service.h"
+
+#include <string>
+
+#include <base/bind.h>
+#include <base/logging.h>
+#include <base/memory/scoped_vector.h>
+#include <base/message_loop/message_loop.h>
+#include <base/metrics/histogram.h>
+#include <base/metrics/histogram_base.h>
+#include <base/metrics/histogram_snapshot_manager.h>
+#include <base/metrics/sparse_histogram.h>
+#include <base/metrics/statistics_recorder.h>
+#include <base/sha1.h>
+
+#include "serialization/metric_sample.h"
+#include "serialization/serialization_utils.h"
+#include "uploader/metrics_log.h"
+#include "uploader/sender_http.h"
+#include "uploader/system_profile_setter.h"
+
+const int UploadService::kMaxFailedUpload = 10;
+
+UploadService::UploadService(SystemProfileSetter* setter,
+                             MetricsLibraryInterface* metrics_lib,
+                             const std::string& server)
+    : system_profile_setter_(setter),
+      metrics_lib_(metrics_lib),
+      histogram_snapshot_manager_(this),
+      sender_(new HttpSender(server)),
+      testing_(false) {
+}
+
+UploadService::UploadService(SystemProfileSetter* setter,
+                             MetricsLibraryInterface* metrics_lib,
+                             const std::string& server,
+                             bool testing)
+    : UploadService(setter, metrics_lib, server) {
+  testing_ = testing;
+}
+
+void UploadService::Init(const base::TimeDelta& upload_interval,
+                         const std::string& metrics_file) {
+  base::StatisticsRecorder::Initialize();
+  metrics_file_ = metrics_file;
+
+  if (!testing_) {
+    base::MessageLoop::current()->PostDelayedTask(FROM_HERE,
+        base::Bind(&UploadService::UploadEventCallback,
+                   base::Unretained(this),
+                   upload_interval),
+        upload_interval);
+  }
+}
+
+void UploadService::StartNewLog() {
+  CHECK(!staged_log_) << "the staged log should be discarded before starting "
+                         "a new metrics log";
+  MetricsLog* log = new MetricsLog();
+  log->PopulateSystemProfile(system_profile_setter_.get());
+  current_log_.reset(log);
+}
+
+void UploadService::UploadEventCallback(const base::TimeDelta& interval) {
+  UploadEvent();
+
+  base::MessageLoop::current()->PostDelayedTask(FROM_HERE,
+      base::Bind(&UploadService::UploadEventCallback,
+                 base::Unretained(this),
+                 interval),
+      interval);
+}
+
+void UploadService::UploadEvent() {
+  if (staged_log_) {
+    // Previous upload failed, retry sending the logs.
+    SendStagedLog();
+    return;
+  }
+
+  // Previous upload successful, reading metrics sample from the file.
+  ReadMetrics();
+  GatherHistograms();
+
+  // No samples found. Exit to avoid sending an empty log.
+  if (!current_log_)
+    return;
+
+  StageCurrentLog();
+  SendStagedLog();
+}
+
+void UploadService::SendStagedLog() {
+  CHECK(staged_log_) << "staged_log_ must exist to be sent";
+
+  // If metrics are not enabled, discard the log and exit.
+  if (!metrics_lib_->AreMetricsEnabled()) {
+    LOG(INFO) << "Metrics disabled. Don't upload metrics samples.";
+    staged_log_.reset();
+    return;
+  }
+
+  std::string log_text;
+  staged_log_->GetEncodedLog(&log_text);
+  if (!sender_->Send(log_text, base::SHA1HashString(log_text))) {
+    ++failed_upload_count_;
+    if (failed_upload_count_ <= kMaxFailedUpload) {
+      LOG(WARNING) << "log upload failed " << failed_upload_count_
+                   << " times. It will be retried later.";
+      return;
+    }
+    LOG(WARNING) << "log failed more than " << kMaxFailedUpload << " times.";
+  } else {
+    LOG(INFO) << "uploaded " << log_text.length() << " bytes";
+  }
+  // Discard staged log.
+  staged_log_.reset();
+}
+
+void UploadService::Reset() {
+  staged_log_.reset();
+  current_log_.reset();
+  failed_upload_count_ = 0;
+}
+
+void UploadService::ReadMetrics() {
+  CHECK(!staged_log_)
+      << "cannot read metrics until the old logs have been discarded";
+
+  ScopedVector<metrics::MetricSample> vector;
+  metrics::SerializationUtils::ReadAndTruncateMetricsFromFile(
+      metrics_file_, &vector);
+
+  int i = 0;
+  for (ScopedVector<metrics::MetricSample>::iterator it = vector.begin();
+       it != vector.end(); it++) {
+    metrics::MetricSample* sample = *it;
+    AddSample(*sample);
+    i++;
+  }
+  DLOG(INFO) << i << " samples read";
+}
+
+void UploadService::AddSample(const metrics::MetricSample& sample) {
+  base::HistogramBase* counter;
+  switch (sample.type()) {
+    case metrics::MetricSample::CRASH:
+      AddCrash(sample.name());
+      break;
+    case metrics::MetricSample::HISTOGRAM:
+      counter = base::Histogram::FactoryGet(
+          sample.name(), sample.min(), sample.max(), sample.bucket_count(),
+          base::Histogram::kUmaTargetedHistogramFlag);
+      counter->Add(sample.sample());
+      break;
+    case metrics::MetricSample::SPARSE_HISTOGRAM:
+      counter = base::SparseHistogram::FactoryGet(
+          sample.name(), base::HistogramBase::kUmaTargetedHistogramFlag);
+      counter->Add(sample.sample());
+      break;
+    case metrics::MetricSample::LINEAR_HISTOGRAM:
+      counter = base::LinearHistogram::FactoryGet(
+          sample.name(),
+          1,
+          sample.max(),
+          sample.max() + 1,
+          base::Histogram::kUmaTargetedHistogramFlag);
+      counter->Add(sample.sample());
+      break;
+    case metrics::MetricSample::USER_ACTION:
+      GetOrCreateCurrentLog()->RecordUserAction(sample.name());
+      break;
+    default:
+      break;
+  }
+}
+
+void UploadService::AddCrash(const std::string& crash_name) {
+  if (crash_name == "user") {
+    GetOrCreateCurrentLog()->IncrementUserCrashCount();
+  } else if (crash_name == "kernel") {
+    GetOrCreateCurrentLog()->IncrementKernelCrashCount();
+  } else if (crash_name == "uncleanshutdown") {
+    GetOrCreateCurrentLog()->IncrementUncleanShutdownCount();
+  } else {
+    DLOG(ERROR) << "crash name unknown" << crash_name;
+  }
+}
+
+void UploadService::GatherHistograms() {
+  base::StatisticsRecorder::Histograms histograms;
+  base::StatisticsRecorder::GetHistograms(&histograms);
+
+  histogram_snapshot_manager_.PrepareDeltas(
+      base::Histogram::kNoFlags, base::Histogram::kUmaTargetedHistogramFlag);
+}
+
+void UploadService::RecordDelta(const base::HistogramBase& histogram,
+                                const base::HistogramSamples& snapshot) {
+  GetOrCreateCurrentLog()->RecordHistogramDelta(histogram.histogram_name(),
+                                                snapshot);
+}
+
+void UploadService::StageCurrentLog() {
+  CHECK(!staged_log_)
+      << "staged logs must be discarded before another log can be staged";
+
+  if (!current_log_) return;
+
+  staged_log_.swap(current_log_);
+  staged_log_->CloseLog();
+  failed_upload_count_ = 0;
+}
+
+MetricsLog* UploadService::GetOrCreateCurrentLog() {
+  if (!current_log_) {
+    StartNewLog();
+  }
+  return current_log_.get();
+}
diff --git a/metricsd/uploader/upload_service.h b/metricsd/uploader/upload_service.h
new file mode 100644
index 0000000..7f2f413
--- /dev/null
+++ b/metricsd/uploader/upload_service.h
@@ -0,0 +1,165 @@
+/*
+ * 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 METRICS_UPLOADER_UPLOAD_SERVICE_H_
+#define METRICS_UPLOADER_UPLOAD_SERVICE_H_
+
+#include <string>
+
+#include "base/metrics/histogram_base.h"
+#include "base/metrics/histogram_flattener.h"
+#include "base/metrics/histogram_snapshot_manager.h"
+
+#include "metrics/metrics_library.h"
+#include "uploader/metrics_log.h"
+#include "uploader/sender.h"
+#include "uploader/system_profile_cache.h"
+
+namespace metrics {
+class ChromeUserMetricsExtension;
+class CrashSample;
+class HistogramSample;
+class LinearHistogramSample;
+class MetricSample;
+class SparseHistogramSample;
+class UserActionSample;
+}
+
+class SystemProfileSetter;
+
+// Service responsible for uploading the metrics periodically to the server.
+// This service works as a simple 2-state state-machine.
+//
+// The two states are the presence or not of a staged log.
+// A staged log is a compressed protobuffer containing both the aggregated
+// metrics and event and information about the client. (product, hardware id,
+// etc...).
+//
+// At regular intervals, the upload event will be triggered and the following
+// will happen:
+// * if a staged log is present:
+//    The previous upload may have failed for various reason. We then retry to
+//    upload the same log.
+//    - if the upload is successful, we discard the log (therefore
+//      transitioning back to no staged log)
+//    - if the upload fails, we keep the log to try again later.
+//    We do not try to read the metrics that are stored on
+//    the disk as we want to avoid storing the metrics in memory.
+//
+// * if no staged logs are present:
+//    Read all metrics from the disk, aggregate them and try to send them.
+//    - if the upload succeeds, we discard the staged log (transitioning back
+//      to the no staged log state)
+//    - if the upload fails, we keep the staged log in memory to retry
+//      uploading later.
+//
+class UploadService : public base::HistogramFlattener {
+ public:
+  explicit UploadService(SystemProfileSetter* setter,
+                         MetricsLibraryInterface* metrics_lib,
+                         const std::string& server);
+
+  void Init(const base::TimeDelta& upload_interval,
+            const std::string& metrics_file);
+
+  // Starts a new log. The log needs to be regenerated after each successful
+  // launch as it is destroyed when staging the log.
+  void StartNewLog();
+
+  // Event callback for handling MessageLoop events.
+  void UploadEventCallback(const base::TimeDelta& interval);
+
+  // Triggers an upload event.
+  void UploadEvent();
+
+  // Sends the staged log.
+  void SendStagedLog();
+
+  // Implements inconsistency detection to match HistogramFlattener's
+  // interface.
+  void InconsistencyDetected(
+      base::HistogramBase::Inconsistency problem) override {}
+  void UniqueInconsistencyDetected(
+      base::HistogramBase::Inconsistency problem) override {}
+  void InconsistencyDetectedInLoggedCount(int amount) override {}
+
+ private:
+  friend class UploadServiceTest;
+
+  FRIEND_TEST(UploadServiceTest, CanSendMultipleTimes);
+  FRIEND_TEST(UploadServiceTest, DiscardLogsAfterTooManyFailedUpload);
+  FRIEND_TEST(UploadServiceTest, EmptyLogsAreNotSent);
+  FRIEND_TEST(UploadServiceTest, FailedSendAreRetried);
+  FRIEND_TEST(UploadServiceTest, LogContainsAggregatedValues);
+  FRIEND_TEST(UploadServiceTest, LogEmptyAfterUpload);
+  FRIEND_TEST(UploadServiceTest, LogEmptyByDefault);
+  FRIEND_TEST(UploadServiceTest, LogKernelCrash);
+  FRIEND_TEST(UploadServiceTest, LogUncleanShutdown);
+  FRIEND_TEST(UploadServiceTest, LogUserCrash);
+  FRIEND_TEST(UploadServiceTest, UnknownCrashIgnored);
+  FRIEND_TEST(UploadServiceTest, ValuesInConfigFileAreSent);
+
+  // Private constructor for use in unit testing.
+  UploadService(SystemProfileSetter* setter,
+                MetricsLibraryInterface* metrics_lib,
+                const std::string& server,
+                bool testing);
+
+  // If a staged log fails to upload more than kMaxFailedUpload times, it
+  // will be discarded.
+  static const int kMaxFailedUpload;
+
+  // Resets the internal state.
+  void Reset();
+
+  // Reads all the metrics from the disk.
+  void ReadMetrics();
+
+  // Adds a generic sample to the current log.
+  void AddSample(const metrics::MetricSample& sample);
+
+  // Adds a crash to the current log.
+  void AddCrash(const std::string& crash_name);
+
+  // Aggregates all histogram available in memory and store them in the current
+  // log.
+  void GatherHistograms();
+
+  // Callback for HistogramSnapshotManager to store the histograms.
+  void RecordDelta(const base::HistogramBase& histogram,
+                   const base::HistogramSamples& snapshot) override;
+
+  // Compiles all the samples received into a single protobuf and adds all
+  // system information.
+  void StageCurrentLog();
+
+  // Returns the current log. If there is no current log, creates it first.
+  MetricsLog* GetOrCreateCurrentLog();
+
+  scoped_ptr<SystemProfileSetter> system_profile_setter_;
+  MetricsLibraryInterface* metrics_lib_;
+  base::HistogramSnapshotManager histogram_snapshot_manager_;
+  scoped_ptr<Sender> sender_;
+  int failed_upload_count_;
+  scoped_ptr<MetricsLog> current_log_;
+  scoped_ptr<MetricsLog> staged_log_;
+
+  std::string metrics_file_;
+
+  bool testing_;
+};
+
+#endif  // METRICS_UPLOADER_UPLOAD_SERVICE_H_
diff --git a/metricsd/uploader/upload_service_test.cc b/metricsd/uploader/upload_service_test.cc
new file mode 100644
index 0000000..cbb5277
--- /dev/null
+++ b/metricsd/uploader/upload_service_test.cc
@@ -0,0 +1,266 @@
+/*
+ * 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 <gtest/gtest.h>
+
+#include "base/at_exit.h"
+#include "base/files/file_util.h"
+#include "base/files/scoped_temp_dir.h"
+#include "base/logging.h"
+#include "base/sys_info.h"
+#include "metrics_library_mock.h"
+#include "serialization/metric_sample.h"
+#include "uploader/metrics_log.h"
+#include "uploader/mock/mock_system_profile_setter.h"
+#include "uploader/mock/sender_mock.h"
+#include "uploader/proto/chrome_user_metrics_extension.pb.h"
+#include "uploader/proto/histogram_event.pb.h"
+#include "uploader/proto/system_profile.pb.h"
+#include "uploader/system_profile_cache.h"
+#include "uploader/upload_service.h"
+
+class UploadServiceTest : public testing::Test {
+ protected:
+  UploadServiceTest()
+      : cache_(true, "/"),
+        upload_service_(new MockSystemProfileSetter(), &metrics_lib_,
+                        kMetricsServer, true),
+        exit_manager_(new base::AtExitManager()) {
+    sender_ = new SenderMock;
+    upload_service_.sender_.reset(sender_);
+    upload_service_.Init(base::TimeDelta::FromMinutes(30), kMetricsFilePath);
+  }
+
+  virtual void SetUp() {
+    CHECK(dir_.CreateUniqueTempDir());
+    upload_service_.GatherHistograms();
+    upload_service_.Reset();
+    sender_->Reset();
+
+    chromeos_metrics::PersistentInteger::SetTestingMode(true);
+    cache_.session_id_.reset(new chromeos_metrics::PersistentInteger(
+        dir_.path().Append("session_id").value()));
+  }
+
+  scoped_ptr<metrics::MetricSample> Crash(const std::string& name) {
+    return metrics::MetricSample::CrashSample(name);
+  }
+
+  base::ScopedTempDir dir_;
+  SenderMock* sender_;
+  SystemProfileCache cache_;
+  UploadService upload_service_;
+  MetricsLibraryMock metrics_lib_;
+
+  scoped_ptr<base::AtExitManager> exit_manager_;
+};
+
+// Tests that the right crash increments a values.
+TEST_F(UploadServiceTest, LogUserCrash) {
+  upload_service_.AddSample(*Crash("user").get());
+
+  MetricsLog* log = upload_service_.current_log_.get();
+  metrics::ChromeUserMetricsExtension* proto = log->uma_proto();
+
+  EXPECT_EQ(1, proto->system_profile().stability().other_user_crash_count());
+}
+
+TEST_F(UploadServiceTest, LogUncleanShutdown) {
+  upload_service_.AddSample(*Crash("uncleanshutdown"));
+
+  EXPECT_EQ(1, upload_service_.current_log_
+                   ->uma_proto()
+                   ->system_profile()
+                   .stability()
+                   .unclean_system_shutdown_count());
+}
+
+TEST_F(UploadServiceTest, LogKernelCrash) {
+  upload_service_.AddSample(*Crash("kernel"));
+
+  EXPECT_EQ(1, upload_service_.current_log_
+                   ->uma_proto()
+                   ->system_profile()
+                   .stability()
+                   .kernel_crash_count());
+}
+
+TEST_F(UploadServiceTest, UnknownCrashIgnored) {
+  upload_service_.AddSample(*Crash("foo"));
+
+  // The log should be empty.
+  EXPECT_FALSE(upload_service_.current_log_);
+}
+
+TEST_F(UploadServiceTest, FailedSendAreRetried) {
+  sender_->set_should_succeed(false);
+
+  upload_service_.AddSample(*Crash("user"));
+  upload_service_.UploadEvent();
+  EXPECT_EQ(1, sender_->send_call_count());
+  std::string sent_string = sender_->last_message();
+
+  upload_service_.UploadEvent();
+  EXPECT_EQ(2, sender_->send_call_count());
+  EXPECT_EQ(sent_string, sender_->last_message());
+}
+
+TEST_F(UploadServiceTest, DiscardLogsAfterTooManyFailedUpload) {
+  sender_->set_should_succeed(false);
+  upload_service_.AddSample(*Crash("user"));
+
+  for (int i = 0; i < UploadService::kMaxFailedUpload; i++) {
+    upload_service_.UploadEvent();
+  }
+
+  EXPECT_TRUE(upload_service_.staged_log_);
+  upload_service_.UploadEvent();
+  EXPECT_FALSE(upload_service_.staged_log_);
+}
+
+TEST_F(UploadServiceTest, EmptyLogsAreNotSent) {
+  upload_service_.UploadEvent();
+  EXPECT_FALSE(upload_service_.current_log_);
+  EXPECT_EQ(0, sender_->send_call_count());
+}
+
+TEST_F(UploadServiceTest, LogEmptyByDefault) {
+  UploadService upload_service(new MockSystemProfileSetter(), &metrics_lib_,
+                               kMetricsServer);
+
+  // current_log_ should be initialized later as it needs AtExitManager to exit
+  // in order to gather system information from SysInfo.
+  EXPECT_FALSE(upload_service.current_log_);
+}
+
+TEST_F(UploadServiceTest, CanSendMultipleTimes) {
+  upload_service_.AddSample(*Crash("user"));
+  upload_service_.UploadEvent();
+
+  std::string first_message = sender_->last_message();
+
+  upload_service_.AddSample(*Crash("kernel"));
+  upload_service_.UploadEvent();
+
+  EXPECT_NE(first_message, sender_->last_message());
+}
+
+TEST_F(UploadServiceTest, LogEmptyAfterUpload) {
+  upload_service_.AddSample(*Crash("user"));
+
+  EXPECT_TRUE(upload_service_.current_log_);
+
+  upload_service_.UploadEvent();
+  EXPECT_FALSE(upload_service_.current_log_);
+}
+
+TEST_F(UploadServiceTest, LogContainsAggregatedValues) {
+  scoped_ptr<metrics::MetricSample> histogram =
+      metrics::MetricSample::HistogramSample("foo", 10, 0, 42, 10);
+  upload_service_.AddSample(*histogram.get());
+
+
+  scoped_ptr<metrics::MetricSample> histogram2 =
+      metrics::MetricSample::HistogramSample("foo", 11, 0, 42, 10);
+  upload_service_.AddSample(*histogram2.get());
+
+  upload_service_.GatherHistograms();
+  metrics::ChromeUserMetricsExtension* proto =
+      upload_service_.current_log_->uma_proto();
+  EXPECT_EQ(1, proto->histogram_event().size());
+}
+
+TEST_F(UploadServiceTest, ExtractChannelFromString) {
+  EXPECT_EQ(
+      SystemProfileCache::ProtoChannelFromString(
+          "developer-build"),
+      metrics::SystemProfileProto::CHANNEL_UNKNOWN);
+
+  EXPECT_EQ(metrics::SystemProfileProto::CHANNEL_DEV,
+            SystemProfileCache::ProtoChannelFromString("dev-channel"));
+
+  EXPECT_EQ(metrics::SystemProfileProto::CHANNEL_UNKNOWN,
+            SystemProfileCache::ProtoChannelFromString("dev-channel test"));
+}
+
+TEST_F(UploadServiceTest, ValuesInConfigFileAreSent) {
+  std::string name("os name");
+  std::string content(
+      "CHROMEOS_RELEASE_NAME=" + name +
+      "\nCHROMEOS_RELEASE_VERSION=version\n"
+      "CHROMEOS_RELEASE_DESCRIPTION=description beta-channel test\n"
+      "CHROMEOS_RELEASE_TRACK=beta-channel\n"
+      "CHROMEOS_RELEASE_BUILD_TYPE=developer build\n"
+      "CHROMEOS_RELEASE_BOARD=myboard");
+
+  base::SysInfo::SetChromeOSVersionInfoForTest(content, base::Time());
+  scoped_ptr<metrics::MetricSample> histogram =
+      metrics::MetricSample::SparseHistogramSample("myhistogram", 1);
+  SystemProfileCache* local_cache_ = new SystemProfileCache(true, "/");
+  local_cache_->session_id_.reset(new chromeos_metrics::PersistentInteger(
+        dir_.path().Append("session_id").value()));
+
+  upload_service_.system_profile_setter_.reset(local_cache_);
+  // Reset to create the new log with the profile setter.
+  upload_service_.Reset();
+  upload_service_.AddSample(*histogram.get());
+  upload_service_.UploadEvent();
+
+  EXPECT_EQ(1, sender_->send_call_count());
+  EXPECT_TRUE(sender_->is_good_proto());
+  EXPECT_EQ(1, sender_->last_message_proto().histogram_event().size());
+
+  EXPECT_EQ(name, sender_->last_message_proto().system_profile().os().name());
+  EXPECT_EQ(metrics::SystemProfileProto::CHANNEL_BETA,
+            sender_->last_message_proto().system_profile().channel());
+  EXPECT_NE(0, sender_->last_message_proto().client_id());
+  EXPECT_NE(0,
+            sender_->last_message_proto().system_profile().build_timestamp());
+  EXPECT_NE(0, sender_->last_message_proto().session_id());
+}
+
+TEST_F(UploadServiceTest, PersistentGUID) {
+  std::string tmp_file = dir_.path().Append("tmpfile").value();
+
+  std::string first_guid = SystemProfileCache::GetPersistentGUID(tmp_file);
+  std::string second_guid = SystemProfileCache::GetPersistentGUID(tmp_file);
+
+  // The GUID are cached.
+  EXPECT_EQ(first_guid, second_guid);
+
+  base::DeleteFile(base::FilePath(tmp_file), false);
+
+  first_guid = SystemProfileCache::GetPersistentGUID(tmp_file);
+  base::DeleteFile(base::FilePath(tmp_file), false);
+  second_guid = SystemProfileCache::GetPersistentGUID(tmp_file);
+
+  // Random GUIDs are generated (not all the same).
+  EXPECT_NE(first_guid, second_guid);
+}
+
+TEST_F(UploadServiceTest, SessionIdIncrementedAtInitialization) {
+  cache_.Initialize();
+  int session_id = cache_.profile_.session_id;
+  cache_.initialized_ = false;
+  cache_.Initialize();
+  EXPECT_EQ(cache_.profile_.session_id, session_id + 1);
+}
+
+int main(int argc, char** argv) {
+  testing::InitGoogleTest(&argc, argv);
+
+  return RUN_ALL_TESTS();
+}
diff --git a/rootdir/Android.mk b/rootdir/Android.mk
index de10535..30a2851 100644
--- a/rootdir/Android.mk
+++ b/rootdir/Android.mk
@@ -24,9 +24,18 @@
 # Put it here instead of in init.rc module definition,
 # because init.rc is conditionally included.
 #
-# create some directories (some are mount points)
-LOCAL_POST_INSTALL_CMD := mkdir -p $(addprefix $(TARGET_ROOT_OUT)/, \
-    sbin dev proc sys system data oem acct config storage mnt root)
+# create some directories (some are mount points) and symlinks
+local_post_install_cmd_base := mkdir -p $(addprefix $(TARGET_ROOT_OUT)/, \
+    sbin dev proc sys system data oem acct cache config storage mnt root); \
+    ln -sf /system/etc $(TARGET_ROOT_OUT)/etc; \
+    ln -sf /sys/kernel/debug $(TARGET_ROOT_OUT)/d; \
+    ln -sf /storage/self/primary $(TARGET_ROOT_OUT)/sdcard
+ifdef BOARD_VENDORIMAGE_FILE_SYSTEM_TYPE
+  LOCAL_POST_INSTALL_CMD := $(local_post_install_cmd_base); mkdir -p $(TARGET_ROOT_OUT)/vendor
+else
+  LOCAL_POST_INSTALL_CMD := $(local_post_install_cmd_base)
+endif
+local_post_install_cmd_base :=
 
 include $(BUILD_SYSTEM)/base_rules.mk
 
diff --git a/rootdir/init.rc b/rootdir/init.rc
index be5292a..12999bd 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -17,6 +17,9 @@
     # Set the security context of /adb_keys if present.
     restorecon /adb_keys
 
+    # Shouldn't be necessary, but sdcard won't start without it. http://b/22568628.
+    mkdir /mnt 0775 root system
+
     start ueventd
 
 on init
@@ -256,6 +259,7 @@
     chmod 0660 /data/misc/wifi/wpa_supplicant.conf
     mkdir /data/local 0751 root root
     mkdir /data/misc/media 0700 media media
+    mkdir /data/misc/boottrace 0771 system shell
 
     # For security reasons, /data/local/tmp should always be empty.
     # Do not place files or directories in /data/local/tmp
@@ -289,6 +293,7 @@
     mkdir /data/mediadrm 0770 mediadrm mediadrm
 
     mkdir /data/adb 0700 root root
+    mkdir /data/anr 0775 system system
 
     # symlink to bugreport storage location
     symlink /data/data/com.android.shell/files/bugreports /data/bugreports
diff --git a/rootdir/init.trace.rc b/rootdir/init.trace.rc
index b9b9229..6e9ac6d 100644
--- a/rootdir/init.trace.rc
+++ b/rootdir/init.trace.rc
@@ -41,3 +41,11 @@
 # Allow only the shell group to read and truncate the kernel trace.
     chown root shell /sys/kernel/debug/tracing/trace
     chmod 0660 /sys/kernel/debug/tracing/trace
+
+on property:persist.debug.atrace.boottrace=1
+    start boottrace
+
+# Run atrace with the categories written in a file
+service boottrace /system/bin/atrace --async_start -f /data/misc/boottrace/categories
+    disabled
+    oneshot
diff --git a/sdcard/sdcard.c b/sdcard/sdcard.c
index 893c0dc..5b657bb 100644
--- a/sdcard/sdcard.c
+++ b/sdcard/sdcard.c
@@ -264,7 +264,7 @@
      * buffer at the same time.  This allows us to share the underlying storage. */
     union {
         __u8 request_buffer[MAX_REQUEST_SIZE];
-        __u8 read_buffer[MAX_READ + PAGESIZE];
+        __u8 read_buffer[MAX_READ + PAGE_SIZE];
     };
 };
 
@@ -1282,7 +1282,7 @@
     __u32 size = req->size;
     __u64 offset = req->offset;
     int res;
-    __u8 *read_buffer = (__u8 *) ((uintptr_t)(handler->read_buffer + PAGESIZE) & ~((uintptr_t)PAGESIZE-1));
+    __u8 *read_buffer = (__u8 *) ((uintptr_t)(handler->read_buffer + PAGE_SIZE) & ~((uintptr_t)PAGE_SIZE-1));
 
     /* Don't access any other fields of hdr or req beyond this point, the read buffer
      * overlaps the request buffer and will clobber data in the request.  This
@@ -1308,7 +1308,7 @@
     struct fuse_write_out out;
     struct handle *h = id_to_ptr(req->fh);
     int res;
-    __u8 aligned_buffer[req->size] __attribute__((__aligned__(PAGESIZE)));
+    __u8 aligned_buffer[req->size] __attribute__((__aligned__(PAGE_SIZE)));
 
     if (req->flags & O_DIRECT) {
         memcpy(aligned_buffer, buffer, req->size);
diff --git a/toolbox/Android.mk b/toolbox/Android.mk
index 273b263..ae880c3 100644
--- a/toolbox/Android.mk
+++ b/toolbox/Android.mk
@@ -2,7 +2,7 @@
 
 
 common_cflags := \
-    -Werror -Wno-unused-parameter \
+    -Werror -Wno-unused-parameter -Wno-unused-const-variable \
     -I$(LOCAL_PATH)/upstream-netbsd/include/ \
     -include bsd-compatibility.h \
 
@@ -56,7 +56,6 @@
     stop \
     top \
     uptime \
-    watchprops \
 
 ALL_TOOLS = $(BSD_TOOLS) $(OUR_TOOLS)
 
diff --git a/toolbox/watchprops.c b/toolbox/watchprops.c
deleted file mode 100644
index cd62922..0000000
--- a/toolbox/watchprops.c
+++ /dev/null
@@ -1,92 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-#include <errno.h>
-
-#include <cutils/properties.h>
-#include <cutils/hashmap.h>
-
-#define _REALLY_INCLUDE_SYS__SYSTEM_PROPERTIES_H_
-#include <sys/_system_properties.h>
-
-static int str_hash(void *key)
-{
-    return hashmapHash(key, strlen(key));
-}
-
-static bool str_equals(void *keyA, void *keyB)
-{
-    return strcmp(keyA, keyB) == 0;
-}
-
-static void announce(char *name, char *value)
-{
-    unsigned char *x;
-    
-    for(x = (unsigned char *)value; *x; x++) {
-        if((*x < 32) || (*x > 127)) *x = '.';
-    }
-
-    fprintf(stderr,"%10d %s = '%s'\n", (int) time(0), name, value);
-}
-
-static void add_to_watchlist(Hashmap *watchlist, const char *name,
-        const prop_info *pi)
-{
-    char *key = strdup(name);
-    unsigned *value = malloc(sizeof(unsigned));
-    if (!key || !value)
-        exit(1);
-
-    *value = __system_property_serial(pi);
-    hashmapPut(watchlist, key, value);
-}
-
-static void populate_watchlist(const prop_info *pi, void *cookie)
-{
-    Hashmap *watchlist = cookie;
-    char name[PROP_NAME_MAX];
-    char value_unused[PROP_VALUE_MAX];
-
-    __system_property_read(pi, name, value_unused);
-    add_to_watchlist(watchlist, name, pi);
-}
-
-static void update_watchlist(const prop_info *pi, void *cookie)
-{
-    Hashmap *watchlist = cookie;
-    char name[PROP_NAME_MAX];
-    char value[PROP_VALUE_MAX];
-    unsigned *serial;
-
-    __system_property_read(pi, name, value);
-    serial = hashmapGet(watchlist, name);
-    if (!serial) {
-        add_to_watchlist(watchlist, name, pi);
-        announce(name, value);
-    } else {
-        unsigned tmp = __system_property_serial(pi);
-        if (*serial != tmp) {
-            *serial = tmp;
-            announce(name, value);
-        }
-    }
-}
-
-int watchprops_main(int argc, char *argv[])
-{
-    unsigned serial;
-    
-    Hashmap *watchlist = hashmapCreate(1024, str_hash, str_equals);
-    if (!watchlist)
-        exit(1);
-
-    __system_property_foreach(populate_watchlist, watchlist);
-
-    for(serial = 0;;) {
-        serial = __system_property_wait_any(serial);
-        __system_property_foreach(update_watchlist, watchlist);
-    }
-    return 0;
-}