android/android_bootable_recovery
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android_bootable_recovery/nandroid.c

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#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <getopt.h>
#include <limits.h>
#include <linux/input.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/reboot.h>
#include <sys/types.h>
#include <time.h>
#include <unistd.h>
#include <sys/wait.h>
#include <sys/limits.h>
#include <dirent.h>
#include <sys/stat.h>
#include <signal.h>
#include <sys/wait.h>
#include "bootloader.h"
#include "common.h"
#include "cutils/properties.h"
#include "firmware.h"
#include "install.h"
#include "minui/minui.h"
#include "minzip/DirUtil.h"
#include "roots.h"
#include "recovery_ui.h"
#include "commands.h"
#include "amend/amend.h"
#include "mtdutils/dump_image.h"
#include "../../external/yaffs2/yaffs2/utils/mkyaffs2image.h"
#include "../../external/yaffs2/yaffs2/utils/unyaffs.h"
#include <sys/vfs.h>
#include "extendedcommands.h"
#include "nandroid.h"
int print_and_error(char* message) {
ui_print(message);
return 1;
}
int yaffs_files_total = 0;
int yaffs_files_count = 0;
void yaffs_callback(char* filename)
{
char* justfile = basename(filename);
if (strlen(justfile) < 30)
ui_print(justfile);
yaffs_files_count++;
if (yaffs_files_total != 0)
ui_set_progress((float)yaffs_files_count / (float)yaffs_files_total);
ui_reset_text_col();
}
void compute_directory_stats(char* directory)
{
char tmp[PATH_MAX];
sprintf(tmp, "find %s | wc -l > /tmp/dircount", directory);
__system(tmp);
char count_text[100];
FILE* f = fopen("/tmp/dircount", "r");
fread(count_text, 1, sizeof(count_text), f);
fclose(f);
yaffs_files_count = 0;
yaffs_files_total = atoi(count_text);
ui_reset_progress();
ui_show_progress(1, 0);
}
int nandroid_backup_partition(char* backup_path, char* root) {
int ret = 0;
char mount_point[PATH_MAX];
translate_root_path(root, mount_point, PATH_MAX);
char* name = basename(mount_point);
ui_print("Backing up %s...\n", name);
if (0 != (ret = ensure_root_path_mounted(root) != 0)) {
ui_print("Can't mount %s!\n", mount_point);
return ret;
}
compute_directory_stats(mount_point);
char tmp[PATH_MAX];
sprintf(tmp, "%s/%s.img", backup_path, name);
ret = mkyaffs2image(mount_point, tmp, 0, yaffs_callback);
ensure_root_path_unmounted(root);
if (0 != ret) {
ui_print("Error while making a yaffs2 image of %s!\n", mount_point);
return ret;
}
return 0;
}
int nandroid_backup(char* backup_path)
{
ui_set_background(BACKGROUND_ICON_INSTALLING);
if (ensure_root_path_mounted("SDCARD:") != 0)
return print_and_error("Can't mount /sdcard\n");
int ret;
struct statfs s;
if (0 != (ret = statfs("/sdcard", &s)))
return print_and_error("Unable to stat /sdcard\n");
uint64_t bavail = s.f_bavail;
uint64_t bsize = s.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];
sprintf(tmp, "mkdir -p %s", backup_path);
__system(tmp);
ui_print("Backing up boot...\n");
sprintf(tmp, "%s/%s", backup_path, "boot.img");
ret = dump_image("boot", tmp, NULL);
if (0 != ret)
return print_and_error("Error while dumping boot image!\n");
ui_print("Backing up recovery...\n");
sprintf(tmp, "%s/%s", backup_path, "recovery.img");
ret = dump_image("recovery", tmp, NULL);
if (0 != ret)
return print_and_error("Error while dumping boot image!\n");
if (0 != (ret = nandroid_backup_partition(backup_path, "SYSTEM:")))
return ret;
if (0 != (ret = nandroid_backup_partition(backup_path, "DATA:")))
return ret;
if (0 != (ret = nandroid_backup_partition(backup_path, "CACHE:")))
return ret;
struct stat st;
if (0 != stat("/dev/block/mmcblk0p2", &st))
ui_print("No sd-ext found. Skipping backup of sd-ext.\n");
else if (0 != (ret = ensure_root_path_mounted("SDEXT:")) || 0 != (ret = nandroid_backup_partition(backup_path, "SDEXT:")))
return ret;
ui_print("Generating md5 sum...\n");
sprintf(tmp, "nandroid-md5.sh %s", backup_path);
if (0 != (ret = __system(tmp))) {
ui_print("Error while generating md5 sum!\n");
return ret;
}
sync();
ui_set_background(BACKGROUND_ICON_NONE);
ui_reset_progress();
ui_print("\nBackup complete!\n");
return 0;
}
typedef int (*format_function)(char* root);
int nandroid_restore_partition_internal(char* backup_path, char* root, format_function formatter) {
int ret = 0;
char mount_point[PATH_MAX];
translate_root_path(root, mount_point, PATH_MAX);
char* name = basename(mount_point);
ui_print("Restoring %s...\n", name);
if (0 != (ret = ensure_root_path_unmounted(root))) {
ui_print("Can't unmount %s!\n", mount_point);
return ret;
}
if (0 != (ret = formatter(root))) {
ui_print("Error while formatting %s!\n", root);
return ret;
}
if (0 != (ret = ensure_root_path_mounted(root))) {
ui_print("Can't mount %s!\n", mount_point);
return ret;
}
char tmp[PATH_MAX];
sprintf(tmp, "%s/%s.img", backup_path, name);
if (0 != (ret = unyaffs(tmp, mount_point, yaffs_callback))) {
ui_print("Error while restoring %s!\n", mount_point);
return ret;
}
return 0;
}
int nandroid_restore_partition(char* backup_path, char* root) {
return nandroid_restore_partition_internal(backup_path, root, format_root_device);
}
int nandroid_restore(char* backup_path, int restore_boot, int restore_system, int restore_data, int restore_cache, int restore_sdext)
{
ui_set_background(BACKGROUND_ICON_INSTALLING);
ui_show_indeterminate_progress();
yaffs_files_total = 0;
if (ensure_root_path_mounted("SDCARD:") != 0)
return print_and_error("Can't mount /sdcard\n");
char tmp[PATH_MAX];
ui_print("Checking MD5 sums...\n");
sprintf(tmp, "cd %s && md5sum -c nandroid.md5", backup_path);
if (0 != __system(tmp))
return print_and_error("MD5 mismatch!\n");
int ret;
if (restore_boot)
{
sprintf(tmp, "flash_image boot %s/boot.img", backup_path);
ui_print("Restoring boot image...\n");
if (0 != (ret = __system(tmp))) {
ui_print("Error while flashing boot image!");
return ret;
}
}
if (restore_system && 0 != (ret = nandroid_restore_partition(backup_path, "SYSTEM:")))
return ret;
if (restore_data && 0 != (ret = nandroid_restore_partition(backup_path, "DATA:")))
return ret;
if (restore_cache && 0 != (ret = nandroid_restore_partition(backup_path, "CACHE:")))
return ret;
if (restore_sdext)
{
struct statfs s;
sprintf(tmp, "%s/sd-ext.img", backup_path);
if (0 != (ret = statfs(tmp, &s)))
ui_print("sd-ext.img not found. Skipping restore of /sd-ext.");
else if (0 != (ret = nandroid_restore_partition_internal(backup_path, "SDEXT:", format_mmc_device)))
return ret;
}
sync();
ui_set_background(BACKGROUND_ICON_NONE);
ui_reset_progress();
ui_print("\nRestore complete!\n");
return 0;
}
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