Add 'adb backup' for pulling a full backup tarfile to the host (d2f5415c) · Commits · e / os / android_system_core

adb/Android.mk

+2 −0

Original line number	Diff line number	Diff line
		@@ -113,6 +113,7 @@ include $(CLEAR_VARS)

		LOCAL_SRC_FILES := \
		adb.c \
		backup_service.c \
		fdevent.c \
		transport.c \
		transport_local.c \
		@@ -164,6 +165,7 @@ LOCAL_LDLIBS := -lrt -lncurses -lpthread

		LOCAL_SRC_FILES := \
		adb.c \
		backup_service.c \
		console.c \
		transport.c \
		transport_local.c \

adb/adb.h

+2 −1

Original line number	Diff line number	Diff line
		@@ -35,7 +35,7 @@
		#define ADB_VERSION_MAJOR 1 // Used for help/version information
		#define ADB_VERSION_MINOR 0 // Used for help/version information

		#define ADB_SERVER_VERSION 26 // Increment this when we want to force users to start a new adb server
		#define ADB_SERVER_VERSION 27 // Increment this when we want to force users to start a new adb server

		typedef struct amessage amessage;
		typedef struct apacket apacket;
		@@ -304,6 +304,7 @@ int create_jdwp_connection_fd(int jdwp_pid);
		#endif

		#if !ADB_HOST
		int backup_service(char* args);
		void framebuffer_service(int fd, void *cookie);
		void log_service(int fd, void *cookie);
		void remount_service(int fd, void *cookie);

adb/backup_service.c

0 → 100644

+95 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2011 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		#include <unistd.h>
		#include <stdio.h>

		#include "sysdeps.h"

		#define TRACE_TAG TRACE_ADB
		#include "adb.h"

		/* returns the data socket passing the backup data here for forwarding */
		int backup_service(char* args) {
		pid_t pid;
		int s[2];

		D("backup_service(%s)\n", args);

		// set up the pipe from the subprocess to here
		// parent will read s[0]; child will write s[1]
		if (adb_socketpair(s)) {
		D("can't create backup socketpair\n");
		fprintf(stderr, "unable to create backup socketpair\n");
		return -1;
		}

		// spin off the child process to run the backup command
		pid = fork();
		if (pid < 0) {
		// failure
		D("can't fork for backup\n");
		fprintf(stderr, "unable to fork for backup\n");
		adb_close(s[0]);
		adb_close(s[1]);
		return -1;
		}

		// Great, we're off and running.
		if (pid == 0) {
		char* p;
		int argc;
		char** backup_args;

		// child -- actually run the backup here
		argc = 1; // room for the basic 'bu' argv[0]
		for (p = (char)args; p && p; ) {
		argc++;
		while (p && p != ':') p++;
		if (*p == ':') p++;
		}

		backup_args = (char*) alloca(argcsizeof(char*) + 1);
		backup_args[0] = "bu";
		argc = 1; // run through again to build the argv array
		for (p = (char)args; p; ) {
		backup_args[argc++] = p;
		while (p && p != ':') p++;
		if (*p == ':') {
		*p = 0;
		p++;
		}
		}
		backup_args[argc] = NULL;

		// Close the half of the socket that we don't care about, route 'bu's console
		// to the output socket, and off we go
		adb_close(s[0]);
		dup2(s[1], STDOUT_FILENO);

		// off we go
		execvp("/system/bin/bu", (char * const *)backup_args);
		// oops error - close up shop and go home
		fprintf(stderr, "Unable to exec 'bu', bailing\n");
		exit(-1);
		} else {
		// parent, i.e. adbd -- close the sending half of the socket
		adb_close(s[1]);
		}

		// we'll be reading from s[0] as the data is sent by the child process
		return s[0];
		}

adb/commandline.c

+75 −0

Original line number	Diff line number	Diff line
		@@ -129,6 +129,19 @@ void help()
		" adb bugreport - return all information from the device\n"
		" that should be included in a bug report.\n"
		"\n"
		" adb backup [-f <file>] [-apk\|-noapk] [-shared\|-noshared] [-all] [<packages...>]\n"
		" - Write a tarfile backup of the device's data to <file>.\n"
		" The -f option must come first; if not specified then the data\n"
		" is written to \"backup.tar\" in the current directory.\n"
		" (-apk\|-noapk enable/disable backup of the .apks themselves\n"
		" in the tarfile; the default is noapk.)\n"
		" (-shared\|-noshared enable/disable backup of the device's\n"
		" shared storage / SD card contents; the default is noshared.)\n"
		" (-all means to back up all installed applications)\n"
		" (<packages...> is the list of applications to be backed up. If\n"
		" the -all or -shared flags are passed, then the package\n"
		" list is optional.)\n"
		"\n"
		" adb help - show this help message\n"
		" adb version - show version num\n"
		"\n"
		@@ -223,6 +236,25 @@ static void read_and_dump(int fd)
		}
		}

		static void copy_to_file(int inFd, int outFd) {
		char buf[4096];
		int len;

		D("copy_to_file(%d -> %d)\n", inFd, outFd);
		for (;;) {
		len = adb_read(inFd, buf, sizeof(buf));
		if (len == 0) {
		break;
		}
		if (len < 0) {
		if (errno == EINTR) continue;
		D("copy_to_file() : error %d\n", errno);
		break;
		}
		adb_write(outFd, buf, len);
		}
		}

		static void stdin_read_thread(void x)
		{
		int fd, fdi;
		@@ -530,6 +562,45 @@ static int logcat(transport_type transport, char* serial, int argc, char **argv)
		return 0;
		}

		static int backup(int argc, char** argv) {
		char buf[4096];
		const char* filename = "./backup.tar";
		int fd, outFd;

		if (!strcmp("-f", argv[1])) {
		if (argc < 3) return usage();
		filename = argv[2];
		argc -= 2;
		argv += 2;
		}

		outFd = adb_open_mode(filename, O_WRONLY \| O_CREAT \| O_TRUNC, 0640);
		if (outFd < 0) {
		fprintf(stderr, "adb: unable to open file %s\n", filename);
		return -1;
		}

		snprintf(buf, sizeof(buf), "backup");
		for (argc--, argv++; argc; argc--, argv++) {
		strncat(buf, ":", sizeof(buf) - strlen(buf) - 1);
		strncat(buf, argv[0], sizeof(buf) - strlen(buf) - 1);
		}

		D("backup. filename=%s buf=%s\n", filename, buf);
		fd = adb_connect(buf);
		if (fd < 0) {
		fprintf(stderr, "adb: unable to connect for backup\n");
		adb_close(outFd);
		return -1;
		}

		copy_to_file(fd, outFd);

		adb_close(fd);
		adb_close(outFd);
		return 0;
		}

		#define SENTINEL_FILE "config" OS_PATH_SEPARATOR_STR "envsetup.make"
		static int top_works(const char *top)
		{
		@@ -1089,6 +1160,10 @@ top:
		return adb_connect("host:start-server");
		}

		if (!strcmp(argv[0], "backup")) {
		return backup(argc, argv);
		}

		if (!strcmp(argv[0], "jdwp")) {
		int fd = adb_connect("jdwp");
		if (fd >= 0) {

adb/services.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -479,6 +479,10 @@ int service_to_fd(const char *name)
		ret = create_service_thread(reboot_service, arg);
		} else if(!strncmp(name, "root:", 5)) {
		ret = create_service_thread(restart_root_service, NULL);
		} else if(!strncmp(name, "backup:", 7)) {
		char* arg = strdup(name+7);
		if (arg == NULL) return -1;
		ret = backup_service(arg);
		} else if(!strncmp(name, "tcpip:", 6)) {
		int port;
		if (sscanf(name + 6, "%d", &port) == 0) {