int nandroid_restore_datamedia(const char* backup_path) {
char tmp[PATH_MAX];
ui_print("\n>> Restoring /data/media...\n");
if (is_data_media_volume_path(backup_path)) {
// non fatal failure
LOGE(" - can't restore folder to its self, skipping...\n");
return 0;
}
Volume *v = volume_for_path("/data");
if (v == NULL)
return -1;
sprintf(tmp, "%s/%s", get_primary_storage_path(), NANDROID_HIDE_PROGRESS_FILE);
ensure_path_mounted(tmp);
int callback = !file_found(tmp);
struct stat s;
char backup_file_image[PATH_MAX];
const char *filesystems[] = { "yaffs2", "ext2", "ext3", "ext4", "vfat", "exfat", "rfs", "f2fs", "auto", NULL };
const char *filesystem;
int i = 0;
nandroid_restore_handler restore_handler = NULL;
while ((filesystem = filesystems[i]) != NULL) {
sprintf(backup_file_image, "%s/datamedia.%s.tar", backup_path, filesystem);
if (0 == stat(backup_file_image, &s)) {
restore_handler = tar_extract_wrapper;
sprintf(tmp, "cd / ; set -o pipefail ; cat %s* | tar -xpv ; exit $?", backup_file_image);
break;
}
sprintf(backup_file_image, "%s/datamedia.%s.tar.gz", backup_path, filesystem);
if (0 == stat(backup_file_image, &s)) {
restore_handler = tar_gzip_extract_wrapper;
sprintf(tmp, "cd / ; set -o pipefail ; cat %s* | pigz -d -c | tar -xpv ; exit $?", backup_file_image);
break;
}
i++;
}
if (filesystem == NULL || restore_handler == NULL) {
LOGE("No backup found, skipping...\n");
return 0;
}
if (0 != format_unknown_device(NULL, "/data/media", NULL))
return print_and_error("Error while erasing /data/media\n", NANDROID_ERROR_GENERAL);
// data can be unmounted by format_unknown_device()
if (0 != ensure_path_mounted("/data"))
return -1;
if (0 != do_tar_extract(tmp, backup_file_image, "/data", callback))
return print_and_error("Failed to restore /data/media!\n", NANDROID_ERROR_GENERAL);
ui_print("Restore of /data/media completed.\n");
return 0;
}
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) ; cat %s* | tar xv ; exit $?", backup_path, backup_file_image);
return do_tar_extract(tmp, callback);
}
