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nandroid.c
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/*
* Copyright (C) 2014 The CyanogenMod 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 <ctype.h>
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <getopt.h>
#include <libgen.h>
#include <limits.h>
#include <linux/input.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/limits.h>
#include <sys/reboot.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/vfs.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>
#include "bootloader.h"
#include "common.h"
#include "cutils/properties.h"
#include "extendedcommands.h"
#include "firmware.h"
#include "flashutils/flashutils.h"
#include "install.h"
#include "libcrecovery/common.h"
#include "minui/minui.h"
#include "minzip/DirUtil.h"
#include "mounts.h"
#include "nandroid.h"
#include "nandroid_md5.h"
#include "recovery_settings.h"
#include "recovery_ui.h"
#include "roots.h"
#define NANDROID_FIELD_DEDUPE_CLEARED_SPACE 1
typedef void (*file_event_callback)(const char* filename);
typedef int (*nandroid_backup_handler)(const char* backup_path, const char* backup_file_image, int callback);
typedef int (*nandroid_restore_handler)(const char* backup_file_image, const char* backup_path, int callback);
static int nandroid_backup_bitfield = 0;
static unsigned int nandroid_files_total = 0;
static unsigned int nandroid_files_count = 0;
#ifdef NEED_SELINUX_FIX
static int nochange;
static int verbose;
static int bakupcon_to_file(const char *pathname, const char *filename)
{
int ret = 0;
struct stat sb;
char* filecontext = NULL;
FILE * f = NULL;
if (lstat(pathname, &sb) < 0) {
LOGW("bakupcon_to_file: %s not found\n", pathname);
return -1;
}
if (lgetfilecon(pathname, &filecontext) < 0) {
LOGW("bakupcon_to_file: can't get %s context\n", pathname);
ret = 1;
}
else {
if ((f = fopen(filename, "a+")) == NULL) {
LOGE("bakupcon_to_file: can't create %s\n", filename);
return -1;
}
//fprintf(f, "chcon -h %s '%s'\n", filecontext, pathname);
fprintf(f, "%s\t%s\n", pathname, filecontext);
fclose(f);
freecon(filecontext);
}
//skip read symlink directory
if (S_ISLNK(sb.st_mode)) return 0;
DIR *dir = opendir(pathname);
// not a directory, carry on
if (dir == NULL) return 0;
struct dirent *entry;
while ((entry = readdir(dir)) != NULL) {
char *entryname;
if (!strcmp(entry->d_name, ".."))
continue;
if (!strcmp(entry->d_name, "."))
continue;
if (asprintf(&entryname, "%s/%s", pathname, entry->d_name) == -1)
continue;
if ((is_data_media() && (strncmp(entryname, "/data/media/", 12) == 0)) ||
strncmp(entryname, "/data/data/com.google.android.music/files/", 42) == 0 )
continue;
bakupcon_to_file(entryname, filename);
free(entryname);
}
closedir(dir);
return ret;
}
static int restorecon_from_file(const char *filename)
{
int ret = 0;
FILE * f = NULL;
if ((f = fopen(filename, "r")) == NULL)
{
LOGW("restorecon_from_file: can't open %s\n", filename);
return -1;
}
char linebuf[4096];
while(fgets(linebuf, 4096, f)) {
if (linebuf[strlen(linebuf)-1] == '\n')
linebuf[strlen(linebuf)-1] = '\0';
char *p1, *p2;
char *buf = linebuf;
p1 = strtok(buf, "\t");
if(!p1) continue;
p2 = strtok(NULL, "\t");
if(!p2) continue;
LOGI("%s %s\n", p1, p2);
if (lsetfilecon(p1, p2) < 0) {
LOGE("restorecon_from_file: can't setfilecon %s\n", p1);
ret++;
}
}
fclose(f);
return ret;
}
#endif
static void nandroid_generate_timestamp_path(char* backup_path) {
time_t t = time(NULL);
struct tm *tmp = localtime(&t);
if (tmp == NULL) {
struct timeval tp;
gettimeofday(&tp, NULL);
snprintf(backup_path, PATH_MAX, "%s/clockworkmod/backup/%ld", get_primary_storage_path(), tp.tv_sec);
} else {
char str[PATH_MAX];
strftime(str, PATH_MAX, "clockworkmod/backup/%F.%H.%M.%S", tmp);
snprintf(backup_path, PATH_MAX, "%s/%s", get_primary_storage_path(), str);
}
}
static void ensure_directory(const char* dir) {
char tmp[PATH_MAX];
sprintf(tmp, "mkdir -p %s && chmod 777 %s", dir, dir);
__system(tmp);
}
static int print_and_error(const char* message, int ret) {
ui_reset_progress();
ui_set_background(BACKGROUND_ICON_ERROR);
if (message != NULL)
LOGE("%s", message); // Assumes message has line termination
return ret;
}
static void nandroid_callback(const char* filename) {
if (filename == NULL)
return;
char tmp[PATH_MAX];
strcpy(tmp, filename);
if (tmp[strlen(tmp) - 1] == '\n')
tmp[strlen(tmp) - 1] = '\0';
LOGI("%s\n", tmp);
if (nandroid_files_total != 0) {
nandroid_files_count++;
float progress_decimal = (float)((double)nandroid_files_count /
(double)nandroid_files_total);
ui_set_progress(progress_decimal);
}
}
static void compute_directory_stats(const char* directory) {
char tmp[PATH_MAX];
char count_text[100];
// reset file count if we ever return before setting it
nandroid_files_count = 0;
nandroid_files_total = 0;
sprintf(tmp, "find %s | %s wc -l > /tmp/dircount", directory, strcmp(directory, "/data") == 0 && is_data_media() ? "grep -v /data/media |" : "");
__system(tmp);
FILE* f = fopen("/tmp/dircount", "r");
if (f == NULL)
return;
if (fgets(count_text, sizeof(count_text), f) == NULL) {
fclose(f);
return;
}
size_t len = strlen(count_text);
if (count_text[len - 1] == '\n')
count_text[len - 1] = '\0';
fclose(f);
nandroid_files_total = atoi(count_text);
ui_reset_progress();
ui_show_progress(1, 0);
}
static int mkyaffs2image_wrapper(const char* backup_path, const char* backup_file_image, int callback) {
char tmp[PATH_MAX];
sprintf(tmp, "cd %s ; mkyaffs2image . %s.img ; exit $?", backup_path, backup_file_image);
FILE *fp = __popen(tmp, "r");
if (fp == NULL) {
ui_print("Unable to execute mkyaffs2image.\n");
return -1;
}
while (fgets(tmp, PATH_MAX, fp) != NULL) {
tmp[PATH_MAX - 1] = '\0';
if (callback)
nandroid_callback(tmp);
}
return __pclose(fp);
}
static int do_tar_compress(char* command, int callback) {
char buf[PATH_MAX];
set_perf_mode(1);
FILE *fp = __popen(command, "r");
if (fp == NULL) {
ui_print("Unable to execute tar command!\n");
set_perf_mode(0);
return -1;
}
while (fgets(buf, PATH_MAX, fp) != NULL) {
buf[PATH_MAX - 1] = '\0';
if (callback)
nandroid_callback(buf);
}
set_perf_mode(0);
return __pclose(fp);
}
static int tar_compress_wrapper(const char* backup_path, const char* backup_file_image, int callback) {
char tmp[PATH_MAX];
sprintf(tmp, "cd $(dirname %s) ; touch %s.tar ; set -o pipefail ; (tar -cpv --exclude=data/data/com.google.android.music/files/* %s $(basename %s) | split -a 1 -b 1000000000 /proc/self/fd/0 %s.tar.) 2> /proc/self/fd/1 ; exit $?", backup_path, backup_file_image, strcmp(backup_path, "/data") == 0 && is_data_media() ? "--exclude=data/media" : "", backup_path, backup_file_image);
return do_tar_compress(tmp, callback);
}
static int tar_gzip_compress_wrapper(const char* backup_path, const char* backup_file_image, int callback) {
char tmp[PATH_MAX];
sprintf(tmp, "cd $(dirname %s) ; touch %s.tar.gz ; set -o pipefail ; (tar -cpv --exclude=data/data/com.google.android.music/files/* %s $(basename %s) | pigz -c | split -a 1 -b 1000000000 /proc/self/fd/0 %s.tar.gz.) 2> /proc/self/fd/1 ; exit $?", backup_path, backup_file_image, strcmp(backup_path, "/data") == 0 && is_data_media() ? "--exclude=data/media" : "", backup_path, backup_file_image);
return do_tar_compress(tmp, callback);
}
static int tar_dump_wrapper(const char* backup_path, const char* backup_file_image, int callback) {
char tmp[PATH_MAX];
sprintf(tmp, "cd $(dirname %s); set -o pipefail ; tar -cpv --exclude=data/data/com.google.android.music/files/* %s $(basename %s) 2> /dev/null | cat", backup_path, strcmp(backup_path, "/data") == 0 && is_data_media() ? "--exclude=data/media" : "", backup_path);
return __system(tmp);
}
void nandroid_dedupe_gc(const char* blob_dir) {
char backup_dir[PATH_MAX];
strcpy(backup_dir, blob_dir);
char *d = dirname(backup_dir);
strcpy(backup_dir, d);
strcat(backup_dir, "/backup");
ui_print("Freeing space...\n");
char tmp[PATH_MAX];
sprintf(tmp, "dedupe gc %s $(find %s -name '*.dup')", blob_dir, backup_dir);
__system(tmp);
ui_print("Done freeing space.\n");
}
static int dedupe_compress_wrapper(const char* backup_path, const char* backup_file_image, int callback) {
char tmp[PATH_MAX];
char blob_dir[PATH_MAX];
strcpy(blob_dir, backup_file_image);
char *d = dirname(blob_dir);
strcpy(blob_dir, d);
d = dirname(blob_dir);
strcpy(blob_dir, d);
d = dirname(blob_dir);
strcpy(blob_dir, d);
strcat(blob_dir, "/blobs");
ensure_directory(blob_dir);
if (!(nandroid_backup_bitfield & NANDROID_FIELD_DEDUPE_CLEARED_SPACE)) {
nandroid_backup_bitfield |= NANDROID_FIELD_DEDUPE_CLEARED_SPACE;
nandroid_dedupe_gc(blob_dir);
}
sprintf(tmp, "dedupe c %s %s %s.dup %s", backup_path, blob_dir, backup_file_image, strcmp(backup_path, "/data") == 0 && is_data_media() ? "./media" : "");
FILE *fp = __popen(tmp, "r");
if (fp == NULL) {
ui_print("Unable to execute dedupe.\n");
return -1;
}
while (fgets(tmp, PATH_MAX, fp) != NULL) {
tmp[PATH_MAX - 1] = '\0';
if (callback)
nandroid_callback(tmp);
}
return __pclose(fp);
}
static void build_configuration_path(char *path_buf, const char *file) {
//sprintf(path_buf, "%s%s%s", get_primary_storage_path(), (is_data_media() ? "/0/" : "/"), file);
sprintf(path_buf, "%s/%s", get_primary_storage_path(), file);
}
static nandroid_backup_handler default_backup_handler = tar_compress_wrapper;
static char forced_backup_format[5] = "";
void nandroid_force_backup_format(const char* fmt) {
strcpy(forced_backup_format, fmt);
}
static void refresh_default_backup_handler() {
char fmt[5];
if (strlen(forced_backup_format) > 0) {
strcpy(fmt, forced_backup_format);
} else {
char path[PATH_MAX];
build_configuration_path(path, NANDROID_BACKUP_FORMAT_FILE);
ensure_path_mounted(path);
FILE* f = fopen(path, "r");
if (NULL == f) {
default_backup_handler = tar_compress_wrapper;
return;
}
fread(fmt, 1, sizeof(fmt), f);
fclose(f);
}
fmt[3] = '\0';
if (0 == strcmp(fmt, "dup"))
default_backup_handler = dedupe_compress_wrapper;
else if (0 == strcmp(fmt, "tgz"))
default_backup_handler = tar_gzip_compress_wrapper;
else if (0 == strcmp(fmt, "tar"))
default_backup_handler = tar_compress_wrapper;
else
default_backup_handler = tar_compress_wrapper;
}
unsigned int nandroid_get_default_backup_format() {
refresh_default_backup_handler();
if (default_backup_handler == dedupe_compress_wrapper) {
return NANDROID_BACKUP_FORMAT_DUP;
} else if (default_backup_handler == tar_gzip_compress_wrapper) {
return NANDROID_BACKUP_FORMAT_TGZ;
} else {
return NANDROID_BACKUP_FORMAT_TAR;
}
}
static nandroid_backup_handler get_backup_handler(const char *backup_path) {
Volume *v = volume_for_path(backup_path);
if (v == NULL) {
ui_print("Unable to find volume.\n");
return NULL;
}
const MountedVolume *mv = find_mounted_volume_by_mount_point(v->mount_point);
if (mv == NULL) {
ui_print("Unable to find mounted volume: %s\n", v->mount_point);
return NULL;
}
if (strcmp(backup_path, "/data") == 0 && is_data_media()) {
return default_backup_handler;
}
if (strlen(forced_backup_format) > 0)
return default_backup_handler;
// Disable tar backups of yaffs2 by default
char prefer_tar[PROPERTY_VALUE_MAX];
property_get("ro.cwm.prefer_tar", prefer_tar, "false");
if (strcmp("yaffs2", mv->filesystem) == 0 && strcmp("false", prefer_tar) == 0) {
return mkyaffs2image_wrapper;
}
return default_backup_handler;
}
static int nandroid_backup_partition_extended(const char* backup_path, const char* mount_point, int umount_when_finished) {
int ret = 0;
char name[PATH_MAX];
char tmp[PATH_MAX];
strcpy(name, basename(mount_point));
struct stat file_info;
build_configuration_path(tmp, NANDROID_HIDE_PROGRESS_FILE);
ensure_path_mounted(tmp);
int callback = stat(tmp, &file_info) != 0;
ui_print("Backing up %s...\n", name);
if (0 != (ret = ensure_path_mounted(mount_point) != 0)) {
ui_print("Can't mount %s!\n", mount_point);
return ret;
}
compute_directory_stats(mount_point);
scan_mounted_volumes();
Volume *v = volume_for_path(mount_point);
const MountedVolume *mv = NULL;
if (v != NULL)
mv = find_mounted_volume_by_mount_point(v->mount_point);
if (strcmp(backup_path, "-") == 0)
sprintf(tmp, "/proc/self/fd/1");
else if (mv == NULL || mv->filesystem == NULL)
sprintf(tmp, "%s/%s.auto", backup_path, name);
else
sprintf(tmp, "%s/%s.%s", backup_path, name, mv->filesystem);
nandroid_backup_handler backup_handler = get_backup_handler(mount_point);
if (backup_handler == NULL) {
ui_print("Error finding an appropriate backup handler.\n");
return -2;
}
ret = backup_handler(mount_point, tmp, callback);
if (umount_when_finished) {
ensure_path_unmounted(mount_point);
}
if (0 != ret) {
ui_print("Error while making a backup image of %s!\n", mount_point);
return ret;
}
ui_print("Backup of %s completed.\n", name);
return 0;
}
static int nandroid_backup_partition(const char* backup_path, const char* root) {
Volume *vol = volume_for_path(root);
// make sure the volume exists before attempting anything...
if (vol == NULL || vol->fs_type == NULL)
return 0;
// see if we need a raw backup (mtd)
char tmp[PATH_MAX];
int ret;
if (strcmp(vol->fs_type, "mtd") == 0 ||
strcmp(vol->fs_type, "bml") == 0 ||
strcmp(vol->fs_type, "emmc") == 0) {
const char* name = basename(root);
if (strcmp(backup_path, "-") == 0)
strcpy(tmp, "/proc/self/fd/1");
else
sprintf(tmp, "%s/%s.img", backup_path, name);
ui_print("Backing up %s image...\n", name);
if (0 != (ret = backup_raw_partition(vol->fs_type, vol->blk_device, tmp))) {
ui_print("Error while backing up %s image!", name);
return ret;
}
ui_print("Backup of %s image completed.\n", name);
return 0;
}
return nandroid_backup_partition_extended(backup_path, root, 1);
}
int nandroid_backup(const char* backup_path) {
nandroid_backup_bitfield = 0;
refresh_default_backup_handler();
if (ensure_path_mounted(backup_path) != 0) {
return print_and_error("Can't mount backup path.\n", NANDROID_ERROR_GENERAL);
}
Volume* volume;
if (is_data_media_volume_path(backup_path))
volume = volume_for_path("/data");
else
volume = volume_for_path(backup_path);
if (NULL == volume)
return print_and_error("Unable to find volume for backup path.\n", NANDROID_ERROR_GENERAL);
int ret;
struct statfs sfs;
struct stat s;
if (NULL != volume) {
if (0 != (ret = statfs(volume->mount_point, &sfs)))
return print_and_error("Unable to stat backup path.\n", ret);
uint64_t bavail = sfs.f_bavail;
uint64_t bsize = sfs.f_bsize;
uint64_t sdcard_free = bavail * bsize;
uint64_t sdcard_free_mb = sdcard_free / (uint64_t)(1024 * 1024);
ui_print("SD Card space free: %lluMB\n", sdcard_free_mb);
if (sdcard_free_mb < 150)
ui_print("There may not be enough free space to complete backup... continuing...\n");
}
char tmp[PATH_MAX];
ensure_directory(backup_path);
ui_set_background(BACKGROUND_ICON_INSTALLING);
if (0 != (ret = nandroid_backup_partition(backup_path, "/boot")))
return print_and_error(NULL, ret);
if (0 != (ret = nandroid_backup_partition(backup_path, "/recovery")))
return print_and_error(NULL, ret);
Volume *vol = volume_for_path("/wimax");
if (vol != NULL && 0 == stat(vol->blk_device, &s)) {
char serialno[PROPERTY_VALUE_MAX];
ui_print("Backing up WiMAX...\n");
serialno[0] = 0;
property_get("ro.serialno", serialno, "");
sprintf(tmp, "%s/wimax.%s.img", backup_path, serialno);
ret = backup_raw_partition(vol->fs_type, vol->blk_device, tmp);
if (0 != ret)
return print_and_error("Error while dumping WiMAX image!\n", NANDROID_ERROR_GENERAL);
}
if (0 != (ret = nandroid_backup_partition(backup_path, "/system")))
return print_and_error(NULL, ret);
if (volume_for_path("/preload") != NULL)
{
if (0 != (ret = nandroid_backup_partition(backup_path, "/preload")))
return print_and_error(NULL, ret);
}
if (0 != (ret = nandroid_backup_partition(backup_path, "/data")))
return print_and_error(NULL, ret);
if (has_datadata()) {
if (0 != (ret = nandroid_backup_partition(backup_path, "/datadata")))
return print_and_error(NULL, ret);
}
if (0 != stat(get_android_secure_path(), &s)) {
ui_print("No .android_secure found. Skipping backup of applications on external storage.\n");
} else {
if (0 != (ret = nandroid_backup_partition_extended(backup_path, get_android_secure_path(), 0)))
return print_and_error(NULL, ret);
}
if (0 != (ret = nandroid_backup_partition_extended(backup_path, "/cache", 0)))
return print_and_error(NULL, ret);
vol = volume_for_path("/sd-ext");
if (vol == NULL || 0 != stat(vol->blk_device, &s)) {
LOGI("No sd-ext found. Skipping backup of sd-ext.\n");
} else {
if (0 != ensure_path_mounted("/sd-ext"))
LOGI("Could not mount sd-ext. sd-ext backup may not be supported on this device. Skipping backup of sd-ext.\n");
else if (0 != (ret = nandroid_backup_partition(backup_path, "/sd-ext")))
return print_and_error(NULL, ret);
}
if (0 != (ret = nandroid_backup_md5_gen(backup_path)))
return print_and_error(NULL, ret);
sprintf(tmp, "cp /tmp/recovery.log %s/recovery.log", backup_path);
__system(tmp);
char base_dir[PATH_MAX];
strcpy(base_dir, backup_path);
char *d = dirname(base_dir);
strcpy(base_dir, d);
d = dirname(base_dir);
strcpy(base_dir, d);
sprintf(tmp, "chmod -R 777 %s ; chmod -R u+r,u+w,g+r,g+w,o+r,o+w %s ; chmod u+x,g+x,o+x %s/backup", backup_path, base_dir, base_dir);
__system(tmp);
sprintf(tmp, "if [ -d %s/blobs ]; then chmod u+x,g+x,o+x %s/blobs; fi", base_dir, base_dir);
__system(tmp);
sync();
ui_set_background(BACKGROUND_ICON_CLOCKWORK);
ui_reset_progress();
ui_print("\nBackup complete!\n");
return 0;
}
static int nandroid_dump(const char* partition) {
// silence our ui_print statements and other logging
ui_set_log_stdout(0);
nandroid_backup_bitfield = 0;
refresh_default_backup_handler();
// override our default to be the basic tar dumper
default_backup_handler = tar_dump_wrapper;
if (strcmp(partition, "boot") == 0) {
Volume *vol = volume_for_path("/boot");
// make sure the volume exists before attempting anything...
if (vol == NULL || vol->fs_type == NULL)
return 1;
char cmd[PATH_MAX];
sprintf(cmd, "cat %s", vol->blk_device);
return __system(cmd);
// return nandroid_backup_partition("-", "/boot");
}
if (strcmp(partition, "recovery") == 0) {
return __system("set -o pipefail ; dump_image recovery /proc/self/fd/1 | cat");
}
if (strcmp(partition, "data") == 0) {
return nandroid_backup_partition("-", "/data");
}
if (strcmp(partition, "system") == 0) {
return nandroid_backup_partition("-", "/system");
}
return 1;
}
static int unyaffs_wrapper(const char* backup_file_image, const char* backup_path, int callback) {
char tmp[PATH_MAX];
sprintf(tmp, "cd %s ; unyaffs %s ; exit $?", backup_path, backup_file_image);
FILE *fp = __popen(tmp, "r");
if (fp == NULL) {
ui_print("Unable to execute unyaffs.\n");
return -1;
}
while (fgets(tmp, PATH_MAX, fp) != NULL) {
tmp[PATH_MAX - 1] = '\0';
if (callback)
nandroid_callback(tmp);
}
return __pclose(fp);
}
static int do_tar_extract(char* command, int callback) {
char buf[PATH_MAX];
set_perf_mode(1);
FILE *fp = __popen(command, "r");
if (fp == NULL) {
ui_print("Unable to execute tar command.\n");
set_perf_mode(0);
return -1;
}
while (fgets(buf, PATH_MAX, fp) != NULL) {
buf[PATH_MAX - 1] = '\0';
if (callback)
nandroid_callback(buf);
}
set_perf_mode(0);
return __pclose(fp);
}
static int tar_gzip_extract_wrapper(const char* backup_file_image, const char* backup_path, int callback) {
char tmp[PATH_MAX];
sprintf(tmp, "cd $(dirname %s) ; set -o pipefail ; cat %s* | pigz -d -c | tar -xpv ; exit $?", backup_path, backup_file_image);
return do_tar_extract(tmp, callback);
}
static int tar_extract_wrapper(const char* backup_file_image, const char* backup_path, int callback) {
char tmp[PATH_MAX];
sprintf(tmp, "cd $(dirname %s) ; set -o pipefail ; cat %s* | tar -xpv ; exit $?", backup_path, backup_file_image);
return do_tar_extract(tmp, callback);
}
static int dedupe_extract_wrapper(const char* backup_file_image, const char* backup_path, int callback) {
char tmp[PATH_MAX];
char blob_dir[PATH_MAX];
strcpy(blob_dir, backup_file_image);
char *bd = dirname(blob_dir);
strcpy(blob_dir, bd);
bd = dirname(blob_dir);
strcpy(blob_dir, bd);
bd = dirname(blob_dir);
sprintf(tmp, "dedupe x %s %s/blobs %s; exit $?", backup_file_image, bd, backup_path);
char path[PATH_MAX];
FILE *fp = __popen(tmp, "r");
if (fp == NULL) {
ui_print("Unable to execute dedupe.\n");
return -1;
}
while (fgets(path, PATH_MAX, fp) != NULL) {
if (callback)
nandroid_callback(path);
}
return __pclose(fp);
}
static int tar_undump_wrapper(const char* backup_file_image, const char* backup_path, int callback) {
char tmp[PATH_MAX];
sprintf(tmp, "cd $(dirname %s) ; tar -xpv ", backup_path);
return __system(tmp);
}
static nandroid_restore_handler get_restore_handler(const char *backup_path) {
Volume *v = volume_for_path(backup_path);
if (v == NULL) {
ui_print("Unable to find volume.\n");
return NULL;
}
scan_mounted_volumes();
const MountedVolume *mv = find_mounted_volume_by_mount_point(v->mount_point);
if (mv == NULL) {
ui_print("Unable to find mounted volume: %s\n", v->mount_point);
return NULL;
}
if (strcmp(backup_path, "/data") == 0 && is_data_media()) {
return tar_extract_wrapper;
}
// Disable tar backups of yaffs2 by default
char prefer_tar[PROPERTY_VALUE_MAX];
property_get("ro.cwm.prefer_tar", prefer_tar, "false");
if (strcmp("yaffs2", mv->filesystem) == 0 && strcmp("false", prefer_tar) == 0) {
return unyaffs_wrapper;
}
return tar_extract_wrapper;
}
static int nandroid_restore_partition_extended(const char* backup_path, const char* mount_point, int umount_when_finished) {
int ret = 0;
char* name = basename(mount_point);
nandroid_restore_handler restore_handler = NULL;
const char *filesystems[] = { "yaffs2", "ext2", "ext3", "ext4", "vfat", "rfs", "f2fs", "exfat", NULL };
const char* backup_filesystem = NULL;
Volume *vol = volume_for_path(mount_point);
const char *device = NULL;
if (vol != NULL)
device = vol->blk_device;
char tmp[PATH_MAX];
sprintf(tmp, "%s/%s.img", backup_path, name);
struct stat file_info;
if (strcmp(backup_path, "-") == 0) {
if (vol)
backup_filesystem = vol->fs_type;
restore_handler = tar_extract_wrapper;
strcpy(tmp, "/proc/self/fd/0");
} else if (0 != (ret = stat(tmp, &file_info))) {
// can't find the backup, it may be the new backup format?
// iterate through the backup types
//printf("couldn't find default\n");
const char *filesystem;
int i = 0;
while ((filesystem = filesystems[i]) != NULL) {
sprintf(tmp, "%s/%s.%s.img", backup_path, name, filesystem);
if (0 == (ret = stat(tmp, &file_info))) {
backup_filesystem = filesystem;
restore_handler = unyaffs_wrapper;
break;
}
sprintf(tmp, "%s/%s.%s.tar", backup_path, name, filesystem);
if (0 == (ret = stat(tmp, &file_info))) {
backup_filesystem = filesystem;
restore_handler = tar_extract_wrapper;
break;
}
sprintf(tmp, "%s/%s.%s.tar.gz", backup_path, name, filesystem);
if (0 == (ret = stat(tmp, &file_info))) {
backup_filesystem = filesystem;
restore_handler = tar_gzip_extract_wrapper;
break;
}
sprintf(tmp, "%s/%s.%s.dup", backup_path, name, filesystem);
if (0 == (ret = stat(tmp, &file_info))) {
backup_filesystem = filesystem;
restore_handler = dedupe_extract_wrapper;
break;
}
i++;
}
if (backup_filesystem == NULL || restore_handler == NULL) {
ui_print("%s file not found. Skipping restore of %s.\n", name, mount_point);
return 0;
} else {
printf("Found new backup image: %s\n", tmp);
}
}
// If the fs_type of this volume is "auto" or mount_point is /data
// and is_data_media, let's revert
// to using a rm -rf, rather than trying to do a
// ext3/ext4/whatever format.
// This is because some phones (like DroidX) will freak out if you
// reformat the /system or /data partitions, and not boot due to
// a locked bootloader.
// Other devices, like the Galaxy Nexus, XOOM, and Galaxy Tab 10.1
// have a /sdcard symlinked to /data/media.
// Or of volume does not exist (.android_secure), just rm -rf.
if (vol == NULL || 0 == strcmp(vol->fs_type, "auto"))
backup_filesystem = NULL;
else if (0 == strcmp(vol->mount_point, "/data") && is_data_media())
backup_filesystem = NULL;
ensure_directory(mount_point);
char path[PATH_MAX];
build_configuration_path(path, NANDROID_HIDE_PROGRESS_FILE);
ensure_path_mounted(path);
int callback = stat(path, &file_info) != 0;
ui_print("Restoring %s...\n", name);
if (backup_filesystem == NULL) {
if (0 != (ret = format_volume(mount_point))) {
ui_print("Error while formatting %s!\n", mount_point);
return ret;
}
} else if (0 != (ret = format_device(device, mount_point, backup_filesystem))) {
ui_print("Error while formatting %s!\n", mount_point);
return ret;
}
if (0 != (ret = ensure_path_mounted(mount_point))) {
ui_print("Can't mount %s!\n", mount_point);
return ret;
}
if (restore_handler == NULL)
restore_handler = get_restore_handler(mount_point);
// override restore handler for undump
if (strcmp(backup_path, "-") == 0) {
restore_handler = tar_undump_wrapper;
}
if (restore_handler == NULL) {
ui_print("Error finding an appropriate restore handler.\n");
return -2;
}
if (0 != (ret = restore_handler(tmp, mount_point, callback))) {
ui_print("Error while restoring %s!\n", mount_point);
return ret;
}
#ifdef NEED_SELINUX_FIX
if (strcmp(backup_path, "-") == 0 || restore_handler == dedupe_extract_wrapper)
LOGI("don't need restore selinux context.\n");
else if (0 == strcmp(mount_point, "/data") ||
0 == strcmp(mount_point, "/system") ||
0 == strcmp(mount_point, "/cache"))
{
name = basename(mount_point);
sprintf(tmp, "%s/%s.context", backup_path, name);
struct stat sb;
if (lstat(tmp, &sb) == 0) {
ui_print("Restoring selinux context...\n");
ret = restorecon_from_file(tmp);
ui_print("Restore selinux context completed.\n");
}
}
#endif
if (umount_when_finished) {
ensure_path_unmounted(mount_point);
}
return 0;
}
static int nandroid_restore_partition(const char* backup_path, const char* root) {
Volume *vol = volume_for_path(root);
// make sure the volume exists...
if (vol == NULL || vol->fs_type == NULL)
return 0;
// see if we need a raw restore (mtd)
char tmp[PATH_MAX];
if (strcmp(vol->fs_type, "mtd") == 0 ||
strcmp(vol->fs_type, "bml") == 0 ||
strcmp(vol->fs_type, "emmc") == 0) {
int ret;
const char* name = basename(root);
ui_print("Erasing %s before restore...\n", name);
if (0 != (ret = format_volume(root))) {
ui_print("Error while erasing %s image!", name);
return ret;
}
if (strcmp(backup_path, "-") == 0)
strcpy(tmp, backup_path);
else
sprintf(tmp, "%s%s.img", backup_path, root);
ui_print("Restoring %s image...\n", name);
if (0 != (ret = restore_raw_partition(vol->fs_type, vol->blk_device, tmp))) {
ui_print("Error while flashing %s image!\n", name);
return ret;
}
return 0;
}
return nandroid_restore_partition_extended(backup_path, root, 1);
}
int nandroid_restore(const char* backup_path, unsigned char flags) {
ui_set_background(BACKGROUND_ICON_INSTALLING);
ui_show_indeterminate_progress();
nandroid_files_total = 0;
int ret;
int restore_boot = ((flags & NANDROID_BOOT) == NANDROID_BOOT);
int restore_system = ((flags & NANDROID_SYSTEM) == NANDROID_SYSTEM);
int restore_data = ((flags & NANDROID_DATA) == NANDROID_DATA);
int restore_cache = ((flags & NANDROID_CACHE) == NANDROID_CACHE);
int restore_sdext = ((flags & NANDROID_SDEXT) == NANDROID_SDEXT);
int restore_wimax = ((flags & NANDROID_WIMAX) == NANDROID_WIMAX);
if (ensure_path_mounted(backup_path) != 0)
return print_and_error("Can't mount backup path\n", NANDROID_ERROR_GENERAL);
struct stat s;
char tmp[PATH_MAX];
ensure_path_mounted("/sdcard");
if (0 == stat("/sdcard/clockworkmod/.no_md5sum", &s))
ui_print("Skip Check MD5...\n");
else {
if (0 != (ret = nandroid_restore_md5_check(backup_path, flags)))
return print_and_error(NULL, ret);
}
if (restore_boot && NULL != volume_for_path("/boot") && 0 != (ret = nandroid_restore_partition(backup_path, "/boot")))
return print_and_error(NULL, ret);
//struct stat s;
Volume *vol = volume_for_path("/wimax");
if (restore_wimax && vol != NULL && 0 == stat(vol->blk_device, &s)) {
char serialno[PROPERTY_VALUE_MAX];
serialno[0] = 0;
property_get("ro.serialno", serialno, "");
sprintf(tmp, "%s/wimax.%s.img", backup_path, serialno);
struct stat st;
if (0 != stat(tmp, &st)) {
ui_print("WARNING: WiMAX partition exists, but nandroid\n");
ui_print(" backup does not contain WiMAX image.\n");
ui_print(" You should create a new backup to\n");
ui_print(" protect your WiMAX keys.\n");
} else {
ui_print("Erasing WiMAX before restore...\n");
if (0 != (ret = format_volume("/wimax")))
return print_and_error("Error while formatting wimax!\n", NANDROID_ERROR_GENERAL);
ui_print("Restoring WiMAX image...\n");
if (0 != (ret = restore_raw_partition(vol->fs_type, vol->blk_device, tmp)))
return print_and_error(NULL, ret);
}
}
if (restore_system && 0 != (ret = nandroid_restore_partition(backup_path, "/system")))
return print_and_error(NULL, ret);
if (volume_for_path("/preload") != NULL)
{
if (restore_system && 0 != (ret = nandroid_restore_partition(backup_path, "/preload")))
return print_and_error(NULL, ret);
}