int cmd_mmc_erase_partition(const char *partition, const char *filesystem)
{
mmc_scan_partitions();
const MmcPartition *p;
p = mmc_find_partition_by_name(partition);
if (p == NULL)
return -1;
return mmc_format_ext3 (p);
}
// format(type, location)
//
// type="MTD" location=partition
Value* FormatFn(const char* name, State* state, int argc, Expr* argv[]) {
char* result = NULL;
if (argc != 2) {
return ErrorAbort(state, "%s() expects 2 args, got %d", name, argc);
}
char* type;
char* location;
if (ReadArgs(state, argv, 2, &type, &location) < 0) {
return NULL;
}
if (strlen(type) == 0) {
ErrorAbort(state, "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(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;
}
} else if (strcmp(type, "MMC") == 0) {
mmc_scan_partitions();
const MmcPartition* mmc = mmc_find_partition_by_name(location);
if (mmc == NULL) {
fprintf(stderr, "%s: no mmc partition named \"%s\"",
name, location);
result = strdup("");
goto done;
}
if (mmc_format_ext3(mmc))
{
result = strdup("");
goto done;
}
} else {
fprintf(stderr, "%s: unsupported type \"%s\"", name, type);
}
result = location;
done:
free(type);
if (result != location) free(location);
return StringValue(result);
}
int
format_root_device(const char *root)
{
/* Be a little safer here; require that "root" is just
* a device with no relative path after it.
*/
const char *c = root;
while (*c != '\0' && *c != ':') {
c++;
}
/*
if (c[0] != ':' || c[1] != '\0') {
LOGW("format_root_device: bad root name \"%s\"\n", root);
return -1;
}
*/
const RootInfo *info = get_root_info_for_path(root);
if (info == NULL || info->device == NULL) {
LOGW("format_root_device: can't resolve \"%s\"\n", root);
return -1;
}
if (info->mount_point != NULL) {
/* Don't try to format a mounted device.
*/
int ret = ensure_root_path_unmounted(root);
if (ret < 0) {
LOGW("format_root_device: can't unmount \"%s\"\n", root);
return ret;
}
}
/* Format the device.
*/
if (info->device == g_mtd_device) {
mtd_scan_partitions();
const MtdPartition *partition;
partition = mtd_find_partition_by_name(info->partition_name);
if (partition == NULL) {
LOGW("format_root_device: can't find mtd partition \"%s\"\n",
info->partition_name);
return -1;
}
if (info->filesystem == g_raw || !strcmp(info->filesystem, "yaffs2")) {
MtdWriteContext *write = mtd_write_partition(partition);
if (write == NULL) {
LOGW("format_root_device: can't open \"%s\"\n", root);
return -1;
} else if (mtd_erase_blocks(write, -1) == (off_t) -1) {
LOGW("format_root_device: can't erase \"%s\"\n", root);
mtd_write_close(write);
return -1;
} else if (mtd_write_close(write)) {
LOGW("format_root_device: can't close \"%s\"\n", root);
return -1;
} else {
return 0;
}
}
}
//Handle MMC device types
if (info->device == g_mmc_device) {
mmc_scan_partitions();
const MmcPartition *partition;
partition = mmc_find_partition_by_name(info->partition_name);
if (partition == NULL) {
LOGE("format_root_device: can't find mmc partition \"%s\"\n",
info->partition_name);
return -1;
}
if (!strcmp(info->filesystem, "ext3")) {
if(mmc_format_ext3(partition))
LOGE("\n\"%s\" wipe failed!\n", info->partition_name);
}
}
/* Format rfs filesystem
*/
if (!strcmp(info->filesystem, "rfs")) {
LOGW("format_root_device: %s as rfs\n", info->device);
char stl_format[32] = "stl.format ";
strcat(stl_format, info->device);
if (__system(stl_format) != 0) {
LOGE("format_root_device: Can't run STL format [%s]\n", strerror(errno));
return -1;
}
return 0;
}
/* Format ext file system
*/
if (!strncmp(info->filesystem, "ext", 3)) {
LOGW("format_root_device: %s as %s\n", info->device, info->filesystem);
char ext_format[96];
sprintf(ext_format, "/sbin/mke2fs -T %s -F -j -q -m 0 -b 4096 %s %s", info->filesystem, (info->filesystem[3]=='2')?"":"-O ^huge_file,extent ", info->device);
if (__system(ext_format) != 0) {
LOGE("format_root_device: Can't run mke2fs [%s]\n", strerror(errno));
return -1;
}
return 0;
}
return format_non_mtd_device(root);
}
