int make_ext4fs_sparse_fd(int fd, long long len,
const char *mountpoint, struct selabel_handle *sehnd)
{
reset_ext4fs_info();
info.len = len;
return make_ext4fs_internal(fd, NULL, mountpoint, NULL, 0, 1, 0, 0, sehnd, 0);
}
int format_volume(const char* volume) {
Volume* v = volume_for_path(volume);
if (v == NULL) {
LOGE("unknown volume \"%s\"\n", volume);
return -1;
}
if (strcmp(v->fs_type, "ramdisk") == 0) {
// you can't format the ramdisk.
LOGE("can't format_volume \"%s\"", volume);
return -1;
}
if (strcmp(v->mount_point, volume) != 0) {
LOGE("can't give path \"%s\" to format_volume\n", volume);
return -1;
}
if (ensure_path_unmounted(volume) != 0) {
LOGE("format_volume failed to unmount \"%s\"\n", v->mount_point);
return -1;
}
if (strcmp(v->fs_type, "yaffs2") == 0 || strcmp(v->fs_type, "mtd") == 0) {
mtd_scan_partitions();
const MtdPartition* partition = mtd_find_partition_by_name(v->device);
if (partition == NULL) {
LOGE("format_volume: no MTD partition \"%s\"\n", v->device);
return -1;
}
MtdWriteContext *write = mtd_write_partition(partition);
if (write == NULL) {
LOGW("format_volume: can't open MTD \"%s\"\n", v->device);
return -1;
} else if (mtd_erase_blocks(write, -1) == (off_t) -1) {
LOGW("format_volume: can't erase MTD \"%s\"\n", v->device);
mtd_write_close(write);
return -1;
} else if (mtd_write_close(write)) {
LOGW("format_volume: can't close MTD \"%s\"\n", v->device);
return -1;
}
return 0;
}
if (strcmp(v->fs_type, "ext4") == 0) {
reset_ext4fs_info();
int result = make_ext4fs(v->device, NULL, NULL, 0, 0, 0);
if (result != 0) {
LOGE("format_volume: make_extf4fs failed on %s\n", v->device);
return -1;
}
return 0;
}
LOGE("format_volume: fs_type \"%s\" unsupported\n", v->fs_type);
return -1;
}
static int format_ext4(char *fs_blkdev, char *fs_mnt_point, bool crypt_footer)
{
uint64_t dev_sz;
int fd, rc = 0;
if ((fd = open(fs_blkdev, O_WRONLY)) < 0) {
PERROR << "Cannot open block device";
return -1;
}
if ((ioctl(fd, BLKGETSIZE64, &dev_sz)) == -1) {
PERROR << "Cannot get block device size";
close(fd);
return -1;
}
struct selabel_handle *sehandle = selinux_android_file_context_handle();
if (!sehandle) {
/* libselinux logs specific error */
LERROR << "Cannot initialize android file_contexts";
close(fd);
return -1;
}
/* Format the partition using the calculated length */
reset_ext4fs_info();
info.len = (off64_t)dev_sz;
if (crypt_footer) {
info.len -= CRYPT_FOOTER_OFFSET;
}
/* Use make_ext4fs_internal to avoid wiping an already-wiped partition. */
rc = make_ext4fs_internal(fd, NULL, NULL, fs_mnt_point, 0, 0, 0, 0, 0, 0, sehandle, 0, 0, NULL, NULL, NULL);
if (rc) {
LERROR << "make_ext4fs returned " << rc;
}
close(fd);
if (sehandle) {
selabel_close(sehandle);
}
return rc;
}
int make_ext4fs(const char *filename, s64 len,
const char *mountpoint, struct selabel_handle *sehnd)
{
int fd;
int status;
reset_ext4fs_info();
info.len = len;
fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0644);
if (fd < 0) {
error_errno("open");
return EXIT_FAILURE;
}
status = make_ext4fs_internal(fd, NULL, mountpoint, NULL, 0, 0, 0, 1, 0, sehnd);
close(fd);
return status;
}
int format_device(const char *device, const char *path, const char *fs_type) {
Volume* v = volume_for_path(path);
if (v == NULL) {
// silent failure for sd-ext
if (strcmp(path, "/sd-ext") == 0)
return -1;
LOGE("unknown volume \"%s\"\n", path);
return -1;
}
if (is_data_media_volume_path(path)) {
return format_unknown_device(NULL, path, NULL);
}
if (strstr(path, "/data") == path && is_data_media()) {
return format_unknown_device(NULL, path, NULL);
}
if (strcmp(fs_type, "ramdisk") == 0) {
// you can't format the ramdisk.
LOGE("can't format_volume \"%s\"", path);
return -1;
}
if (strcmp(fs_type, "rfs") == 0) {
if (ensure_path_unmounted(path) != 0) {
LOGE("format_volume failed to unmount \"%s\"\n", v->mount_point);
return -1;
}
if (0 != format_rfs_device(device, path)) {
LOGE("format_volume: format_rfs_device failed on %s\n", device);
return -1;
}
return 0;
}
if (strcmp(v->mount_point, path) != 0) {
return format_unknown_device(v->device, path, NULL);
}
if (ensure_path_unmounted(path) != 0) {
LOGE("format_volume failed to unmount \"%s\"\n", v->mount_point);
return -1;
}
if (strcmp(fs_type, "yaffs2") == 0 || strcmp(fs_type, "mtd") == 0) {
mtd_scan_partitions();
const MtdPartition* partition = mtd_find_partition_by_name(device);
if (partition == NULL) {
LOGE("format_volume: no MTD partition \"%s\"\n", device);
return -1;
}
MtdWriteContext *write = mtd_write_partition(partition);
if (write == NULL) {
LOGW("format_volume: can't open MTD \"%s\"\n", device);
return -1;
} else if (mtd_erase_blocks(write, -1) == (off_t) -1) {
LOGW("format_volume: can't erase MTD \"%s\"\n", device);
mtd_write_close(write);
return -1;
} else if (mtd_write_close(write)) {
LOGW("format_volume: can't close MTD \"%s\"\n",device);
return -1;
}
return 0;
}
if (strcmp(fs_type, "ext4") == 0) {
int length = 0;
if (strcmp(v->fs_type, "ext4") == 0) {
// Our desired filesystem matches the one in fstab, respect v->length
length = v->length;
}
reset_ext4fs_info();
int result = make_ext4fs(device, length, v->mount_point, sehandle);
if (result != 0) {
LOGE("format_volume: make_extf4fs failed on %s\n", device);
return -1;
}
return 0;
}
return format_unknown_device(device, path, fs_type);
}
int format_device(const char *device, const char *path, const char *fs_type) {
Volume* v = volume_for_path(path);
if (v == NULL) {
// no /sdcard? let's assume /data/media
if (strstr(path, "/sdcard") == path && is_data_media()) {
return format_unknown_device(NULL, path, NULL);
}
// silent failure for sd-ext
if (strcmp(path, "/sd-ext") == 0)
return -1;
LOGE("unknown volume \"%s\"\n", path);
return -1;
}
if (strcmp(fs_type, "ramdisk") == 0) {
// you can't format the ramdisk.
LOGE("can't format_volume \"%s\"", path);
return -1;
}
if (strcmp(v->mount_point, path) != 0) {
return format_unknown_device(v->device, path, NULL);
}
if (ensure_path_unmounted(path) != 0) {
LOGE("format_volume failed to unmount \"%s\"\n", v->mount_point);
return -1;
}
if (strcmp(fs_type, "yaffs2") == 0 || strcmp(fs_type, "mtd") == 0) {
mtd_scan_partitions();
const MtdPartition* partition = mtd_find_partition_by_name(device);
if (partition == NULL) {
LOGE("format_volume: no MTD partition \"%s\"\n", device);
return -1;
}
MtdWriteContext *write = mtd_write_partition(partition);
if (write == NULL) {
LOGW("format_volume: can't open MTD \"%s\"\n", device);
return -1;
} else if (mtd_erase_blocks(write, -1) == (off_t) -1) {
LOGW("format_volume: can't erase MTD \"%s\"\n", device);
mtd_write_close(write);
return -1;
} else if (mtd_write_close(write)) {
LOGW("format_volume: can't close MTD \"%s\"\n",device);
return -1;
}
return 0;
}
if (strcmp(fs_type, "ext4") == 0) {
reset_ext4fs_info();
int result = make_ext4fs(device, NULL, NULL, 0, 0, 0);
if (result != 0) {
LOGE("format_volume: make_extf4fs failed on %s\n", device);
return -1;
}
return 0;
}
return format_unknown_device(device, path, fs_type);
}
void wipe_data(int confirm) {
if (confirm) {
static char** title_headers = NULL;
if (title_headers == NULL) {
char* headers[] = { "Confirm wipe of all user data?",
" THIS CAN NOT BE UNDONE.",
"",
NULL };
title_headers = prepend_title((const char**)headers);
}
char* items[] = { " No",
#if TARGET_BOOTLOADER_BOARD_NAME == otter
" Yes -- delete all user data", // [1]
#else
" No",
" No",
" No",
" No",
" No",
" No",
" Yes -- delete all user data", // [7]
" No",
" No",
" No",
#endif
NULL };
int chosen_item = get_menu_selection(title_headers, items, 1, 0);
#if TARGET_BOOTLOADER_BOARD_NAME == otter
if (chosen_item != 1) {
#else
if (chosen_itme != 7) {
#endif
return;
}
}
ui_print("\n-- Wiping data...\n");
device_wipe_data();
erase_volume("/data");
erase_volume("/cache");
if (has_datadata()) {
erase_volume("/datadata");
}
#if TARGET_BOOTLOADER_BOARD_NAME != otter // ToDo: make this check for the partition rather then the device
erase_volume("/sd-ext");
#endif
erase_volume("/sdcard/.android_secure");
ui_print("%s\n", datawipecomplete);
}
void erase_cache(int orscallback) {
if(orscallback) {
if(orswipeprompt && !confirm_selection("Confirm wipe?","Yes - Wipe Cache")) {
ui_print("Skipping cache wipe...\n");
return;
}
} else if (!confirm_selection("Confirm wipe?", "Yes - Wipe Cache")) {
return;
}
ui_print("\n-- Wiping cache...\n");
erase_volume("/cache");
ui_print("%s\n", cachewipecomplete);
if (!ui_text_visible()) return;
}
void erase_dalvik_cache(int orscallback) {
if(orscallback) {
if(orswipeprompt && !confirm_selection("Confirm wipe?", "Yes - Wipe Dalvik Cache")) {
ui_print("Skipping dalvik cache wipe...\n");
return;
}
} else if (!confirm_selection( "Confirm wipe?", "Yes - Wipe Dalvik Cache")) {
return;
}
if (0 != ensure_path_mounted("/data")) {
return;
}
#if TARGET_BOOTLOADER_BOARD_NAME != otter
ensure_path_mounted("/sd-ext");
#endif
ensure_path_mounted("/cache");
__system("rm -r /data/dalvik-cache");
__system("rm -r /cache/dalvik-cache");
#if TARGET_BOOTLOADER_BOARD_NAME != otter
__system("rm -r /sd-ext/dalvik-cache");
#endif
ui_print("Dalvik Cache wiped.\n");
ensure_path_unmounted("/data");
}
void wipe_all(int orscallback) {
if(orscallback) {
if(orswipeprompt && !confirm_selection("Confirm wipe all?", "Yes - Wipe All")) {
ui_print("Skipping full wipe...\n");
return;
}
} else if (!confirm_selection("Confirm wipe all?", "Yes - Wipe All")) {
return;
}
ui_print("\n-- Wiping system, data, cache...\n");
erase_volume("/system");
erase_volume("/data");
erase_volume("/cache");
ui_print("\nFull wipe complete!\n");
if (!ui_text_visible()) return;
}
int format_device(const char *device, const char *path, const char *fs_type) {
Volume* v = volume_for_path(path);
if (v == NULL) {
// no /sdcard? let's assume /data/media
if (strstr(path, "/sdcard") == path && is_data_media()) {
return format_unknown_device(NULL, path, NULL);
}
// silent failure for sd-ext
if (strcmp(path, "/sd-ext") == 0)
return -1;
LOGE("unknown volume \"%s\"\n", path);
return -1;
}
if (strcmp(fs_type, "ramdisk") == 0) {
// you can't format the ramdisk.
LOGE("can't format_volume \"%s\"", path);
return -1;
}
if (strcmp(fs_type, "rfs") == 0) {
if (ensure_path_unmounted(path) != 0) {
LOGE("format_volume failed to unmount \"%s\"\n", v->mount_point);
return -1;
}
if (0 != format_rfs_device(device, path)) {
LOGE("format_volume: format_rfs_device failed on %s\n", device);
return -1;
}
return 0;
}
if (strcmp(v->mount_point, path) != 0) {
return format_unknown_device(v->device, path, NULL);
}
if (ensure_path_unmounted(path) != 0) {
LOGE("format_volume failed to unmount \"%s\"\n", v->mount_point);
return -1;
}
if (strcmp(fs_type, "yaffs2") == 0 || strcmp(fs_type, "mtd") == 0) {
mtd_scan_partitions();
const MtdPartition* partition = mtd_find_partition_by_name(device);
if (partition == NULL) {
LOGE("format_volume: no MTD partition \"%s\"\n", device);
return -1;
}
MtdWriteContext *write = mtd_write_partition(partition);
if (write == NULL) {
LOGW("format_volume: can't open MTD \"%s\"\n", device);
return -1;
} else if (mtd_erase_blocks(write, -1) == (off_t) -1) {
LOGW("format_volume: can't erase MTD \"%s\"\n", device);
mtd_write_close(write);
return -1;
} else if (mtd_write_close(write)) {
LOGW("format_volume: can't close MTD \"%s\"\n",device);
return -1;
}
return 0;
}
if (strcmp(fs_type, "ext4") == 0) {
int length = 0;
if (strcmp(v->fs_type, "ext4") == 0) {
// Our desired filesystem matches the one in fstab, respect v->length
length = v->length;
}
reset_ext4fs_info();
int result = make_ext4fs(device, length, v->mount_point, sehandle);
if (result != 0) {
LOGE("format_volume: make_extf4fs failed on %s\n", device);
return -1;
}
return 0;
}
return format_unknown_device(device, path, fs_type);
}
int format_volume(const char* volume) {
Volume* v = volume_for_path(volume);
// Special case for formatting /system
if (strcmp(volume, "/system") == 0) {
// you can't format the system on xperias, thank you SE...
LOGI("Formatting /system ...\n");
ensure_path_mounted("/system");
__system("/sbin/mount -o remount,rw /system");
__system("/sbin/rm -rf /system/*");
ensure_path_unmounted("/system");
return 0;
}
if (v == NULL) {
// no /sdcard? let's assume /data/media
if (strstr(volume, "/sdcard") == volume && is_data_media()) {
return format_unknown_device(NULL, volume, NULL);
}
// silent failure for sd-ext
if (strcmp(volume, "/sd-ext") == 0)
return -1;
LOGE("unknown volume \"%s\"\n", volume);
return -1;
}
if (strcmp(v->fs_type, "ramdisk") == 0) {
// you can't format the ramdisk.
LOGE("can't format_volume \"%s\"", volume);
return -1;
}
if (strcmp(v->mount_point, volume) != 0) {
#if 0
LOGE("can't give path \"%s\" to format_volume\n", volume);
return -1;
#endif
return format_unknown_device(v->device, volume, NULL);
}
if (ensure_path_unmounted(volume) != 0) {
LOGE("format_volume failed to unmount \"%s\"\n", v->mount_point);
return -1;
}
if (strcmp(v->fs_type, "yaffs2") == 0 || strcmp(v->fs_type, "mtd") == 0) {
mtd_scan_partitions();
const MtdPartition* partition = mtd_find_partition_by_name(v->device);
if (partition == NULL) {
LOGE("format_volume: no MTD partition \"%s\"\n", v->device);
return -1;
}
MtdWriteContext *write = mtd_write_partition(partition);
if (write == NULL) {
LOGW("format_volume: can't open MTD \"%s\"\n", v->device);
return -1;
} else if (mtd_erase_blocks(write, -1) == (off_t) -1) {
LOGW("format_volume: can't erase MTD \"%s\"\n", v->device);
mtd_write_close(write);
return -1;
} else if (mtd_write_close(write)) {
LOGW("format_volume: can't close MTD \"%s\"\n", v->device);
return -1;
}
return 0;
}
if (strcmp(v->fs_type, "ext4") == 0) {
reset_ext4fs_info();
int result = make_ext4fs(v->device, NULL, NULL, 0, 0, 0);
if (result != 0) {
LOGE("format_volume: make_extf4fs failed on %s\n", v->device);
return -1;
}
return 0;
}
#if 0
LOGE("format_volume: fs_type \"%s\" unsupported\n", v->fs_type);
return -1;
#endif
return format_unknown_device(v->device, volume, v->fs_type);
}
// format(fs_type, partition_type, location)
//
// fs_type="yaffs2" partition_type="MTD" location=partition
// fs_type="ext4" partition_type="EMMC" location=device
Value *
FormatFn (const char *name, State * state, int argc, Expr * argv[])
{
char *result = NULL;
if (argc != 3)
{
return ErrorAbort (state, "%s() expects 3 args, got %d", name,
argc);
}
char *fs_type;
char *partition_type;
char *location;
if (ReadArgs (state, argv, 3, &fs_type, &partition_type, &location) < 0)
{
return NULL;
}
if (strlen (fs_type) == 0)
{
ErrorAbort (state, "fs_type argument to %s() can't be empty",
name);
goto done;
}
if (strlen (partition_type) == 0)
{
ErrorAbort (state,
"partition_type argument to %s() can't be empty",
name);
goto done;
}
if (strlen (location) == 0)
{
ErrorAbort (state, "location argument to %s() can't be empty",
name);
goto done;
}
if (strcmp (partition_type, "MTD") == 0)
{
mtd_scan_partitions ();
const MtdPartition *mtd = mtd_find_partition_by_name (location);
if (mtd == NULL)
{
fprintf (stderr, "%s: no mtd partition named \"%s\"",
name, location);
result = strdup ("");
goto done;
}
MtdWriteContext *ctx = mtd_write_partition (mtd);
if (ctx == NULL)
{
fprintf (stderr, "%s: can't write \"%s\"", name,
location);
result = strdup ("");
goto done;
}
if (mtd_erase_blocks (ctx, -1) == -1)
{
mtd_write_close (ctx);
fprintf (stderr, "%s: failed to erase \"%s\"", name,
location);
result = strdup ("");
goto done;
}
if (mtd_write_close (ctx) != 0)
{
fprintf (stderr, "%s: failed to close \"%s\"", name,
location);
result = strdup ("");
goto done;
}
result = location;
#ifdef USE_EXT4
}
else if (strcmp (fs_type, "ext4") == 0)
{
reset_ext4fs_info ();
int status = make_ext4fs (location, NULL, NULL, 0, 0, 0);
if (status != 0)
{
fprintf (stderr, "%s: make_ext4fs failed (%d) on %s",
name, status, location);
result = strdup ("");
goto done;
}
result = location;
#endif
}
else
{
fprintf (stderr,
"%s: unsupported fs_type \"%s\" partition_type \"%s\"",
name, fs_type, partition_type);
}
done:
free (fs_type);
free (partition_type);
if (result != location)
free (location);
return StringValue (result);
}
