예제 #1
0
/**
 * change_label - change the current label on a device
 * @dev:	device to change the label on
 * @mnt_flags:	mount flags of the device or 0 if not mounted
 * @mnt_point:	mount point of the device or NULL
 * @label:	the new label
 *
 * Change the label on the device @dev to @label.
 */
static int change_label(ntfs_volume *vol, char *label)
{
	ntfschar *new_label = NULL;
	int label_len;
	int result = 0;

	label_len = ntfs_mbstoucs(label, &new_label);
	if (label_len == -1) {
		ntfs_log_perror("Unable to convert label string to Unicode");
		return 1;
	}
	else if (label_len*sizeof(ntfschar) > 0x100) {
		ntfs_log_warning("New label is too long. Maximum %u characters "
				"allowed. Truncating %u excess characters.\n",
				(unsigned)(0x100 / sizeof(ntfschar)),
				(unsigned)(label_len -
				(0x100 / sizeof(ntfschar))));
		label_len = 0x100 / sizeof(ntfschar);
		label[label_len] = const_cpu_to_le16(0);
	}

	if(!opts.noaction)
		result = ntfs_volume_rename(vol, new_label, label_len) ? 1 : 0;

	free(new_label);
	return result;
}
예제 #2
0
/**
 * change_label - change the current label on a device
 * @dev:	device to change the label on
 * @mnt_flags:	mount flags of the device or 0 if not mounted
 * @mnt_point:	mount point of the device or NULL
 * @label:	the new label
 *
 * Change the label on the device @dev to @label.
 */
static int change_label(ntfs_volume *vol, unsigned long mnt_flags, char *label, BOOL force)
{
	ntfschar *new_label = NULL;
	int label_len;
	int result = 0;

	//XXX significant?
	if (mnt_flags & NTFS_MF_MOUNTED) {
		/* If not the root fs or mounted read/write, refuse change. */
		if (!(mnt_flags & NTFS_MF_ISROOT) ||
				!(mnt_flags & NTFS_MF_READONLY)) {
			if (!force) {
				ntfs_log_error("Refusing to change label on "
						"read-%s mounted device %s.\n",
						mnt_flags & NTFS_MF_READONLY ?
						"only" : "write", opts.device);
				return 1;
			}
		}
	}

	label_len = ntfs_mbstoucs(label, &new_label);
	if (label_len == -1) {
		ntfs_log_perror("Unable to convert label string to Unicode");
		return 1;
	}
	else if (label_len*sizeof(ntfschar) > 0x100) {
		ntfs_log_warning("New label is too long. Maximum %u characters "
				"allowed. Truncating %u excess characters.\n",
				(unsigned)(0x100 / sizeof(ntfschar)),
				(unsigned)(label_len -
				(0x100 / sizeof(ntfschar))));
		label_len = 0x100 / sizeof(ntfschar);
		label[label_len] = const_cpu_to_le16(0);
	}

	if(!opts.noaction)
		result = ntfs_volume_rename(vol, new_label, label_len) ? 1 : 0;

	free(new_label);
	return result;
}