/**
* 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;
}
/**
* 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;
}