{
fprintf(stderr, "Usage: tune.exfat\n");
fprintf(stderr, "\t-l | --print-label Print volume label\n");
- fprintf(stderr, "\t-L | --volume-label=label Set volume label\n");
+ fprintf(stderr, "\t-L | --set-label=label Set volume label\n");
+ fprintf(stderr, "\t-i | --print-serial Print volume serial\n");
+ fprintf(stderr, "\t-L | --set-serial=value Set volume serial\n");
fprintf(stderr, "\t-V | --version Show version\n");
fprintf(stderr, "\t-v | --verbose Print debug\n");
fprintf(stderr, "\t-h | --help Show help\n");
static struct option opts[] = {
{"print-label", no_argument, NULL, 'l' },
{"set-label", required_argument, NULL, 'L' },
+ {"print-serial", no_argument, NULL, 'i' },
+ {"set-serial", required_argument, NULL, 'I' },
{"version", no_argument, NULL, 'V' },
{"verbose", no_argument, NULL, 'v' },
{"help", no_argument, NULL, 'h' },
{NULL, 0, NULL, 0 }
};
-static off_t exfat_get_root_entry_offset(struct exfat_blk_dev *bd)
-{
- struct pbr *bs;
- int nbytes;
- unsigned int cluster_size;
- off_t root_clu_off;
-
- bs = (struct pbr *)malloc(sizeof(struct pbr));
- if (!bs) {
- exfat_err("failed to allocate memory\n");
- return -ENOMEM;
- }
-
- nbytes = exfat_read(bd->dev_fd, bs, sizeof(struct pbr), 0);
- if (nbytes != sizeof(struct pbr)) {
- exfat_err("boot sector read failed: %d\n", errno);
- return -1;
- }
-
- cluster_size = (1 << bs->bsx.sect_per_clus_bits) * bd->sector_size;
- root_clu_off = le32_to_cpu(bs->bsx.clu_offset) * bd->sector_size +
- le32_to_cpu(bs->bsx.root_cluster - EXFAT_REVERVED_CLUSTERS)
- * cluster_size;
- free(bs);
-
- return root_clu_off;
-}
-
-static int exfat_get_volume_label(struct exfat_blk_dev *bd, off_t root_clu_off)
-{
- struct exfat_dentry *vol_entry;
- char volume_label[VOLUME_LABEL_BUFFER_SIZE];
- __le16 disk_label[VOLUME_LABEL_MAX_LEN];
- int nbytes;
-
- vol_entry = malloc(sizeof(struct exfat_dentry));
- if (!vol_entry) {
- exfat_err("failed to allocate memory\n");
- return -ENOMEM;
- }
-
- nbytes = exfat_read(bd->dev_fd, vol_entry,
- sizeof(struct exfat_dentry), root_clu_off);
- if (nbytes != sizeof(struct exfat_dentry)) {
- exfat_err("volume entry read failed: %d\n", errno);
- return -1;
- }
-
- memcpy(disk_label, vol_entry->vol_label, sizeof(disk_label));
- memset(volume_label, 0, sizeof(volume_label));
- if (exfat_utf16_dec(disk_label, vol_entry->vol_char_cnt*2,
- volume_label, sizeof(volume_label)) < 0) {
- exfat_err("failed to decode volume label\n");
- return -1;
- }
-
- exfat_info("label: %s\n", volume_label);
- return 0;
-}
-
-static int exfat_set_volume_label(struct exfat_blk_dev *bd,
- char *label_input, off_t root_clu_off)
-{
- struct exfat_dentry vol;
- int nbytes;
- __u16 volume_label[VOLUME_LABEL_MAX_LEN];
- int volume_label_len;
-
- volume_label_len = exfat_utf16_enc(label_input,
- volume_label, sizeof(volume_label));
- if (volume_label_len < 0) {
- exfat_err("failed to encode volume label\n");
- return -1;
- }
-
- vol.type = EXFAT_VOLUME;
- memset(vol.vol_label, 0, sizeof(vol.vol_label));
- memcpy(vol.vol_label, volume_label, volume_label_len);
- vol.vol_char_cnt = volume_label_len/2;
-
- nbytes = exfat_write(bd->dev_fd, &vol, sizeof(struct exfat_dentry),
- root_clu_off);
- if (nbytes != sizeof(struct exfat_dentry)) {
- exfat_err("volume entry write failed: %d\n", errno);
- return -1;
- }
- fsync(bd->dev_fd);
-
- exfat_info("new label: %s\n", label_input);
- return 0;
-}
-
-#define EXFAT_GET_LABEL 0x1
-#define EXFAT_SET_LABEL 0x2
-
int main(int argc, char *argv[])
{
int c;
exfat_err("failed to init locale/codeset\n");
opterr = 0;
- while ((c = getopt_long(argc, argv, "L:lVvh", opts, NULL)) != EOF)
+ while ((c = getopt_long(argc, argv, "I:iL:lVvh", opts, NULL)) != EOF)
switch (c) {
case 'l':
- flags = EXFAT_GET_LABEL;
+ flags = EXFAT_GET_VOLUME_LABEL;
break;
case 'L':
snprintf(label_input, sizeof(label_input), "%s",
optarg);
- flags = EXFAT_SET_LABEL;
+ flags = EXFAT_SET_VOLUME_LABEL;
+ break;
+ case 'i':
+ flags = EXFAT_GET_VOLUME_SERIAL;
+ break;
+ case 'I':
+ ui.volume_serial = strtoul(optarg, NULL, 0);
+ flags = EXFAT_SET_VOLUME_SERIAL;
break;
case 'V':
version_only = true;
if (ret < 0)
goto out;
+ /* Mode to change or display volume serial */
+ if (flags == EXFAT_GET_VOLUME_SERIAL) {
+ ret = exfat_show_volume_serial(&bd, &ui);
+ goto close_fd_out;
+ } else if (flags == EXFAT_SET_VOLUME_SERIAL) {
+ ret = exfat_set_volume_serial(&bd, &ui);
+ goto close_fd_out;
+ }
+
root_clu_off = exfat_get_root_entry_offset(&bd);
if (root_clu_off < 0)
- goto out;
+ goto close_fd_out;
- if (flags == EXFAT_GET_LABEL)
- ret = exfat_get_volume_label(&bd, root_clu_off);
- else if (flags == EXFAT_SET_LABEL)
+ if (flags == EXFAT_GET_VOLUME_LABEL)
+ ret = exfat_show_volume_label(&bd, root_clu_off);
+ else if (flags == EXFAT_SET_VOLUME_LABEL)
ret = exfat_set_volume_label(&bd, label_input, root_clu_off);
-
+close_fd_out:
+ close(bd.dev_fd);
out:
return ret;
}
projects / sven / exfatprogs.git / blobdiff