/**
* fdisk_list_disklabel:
* @cxt: fdisk context
*
* Lists details about disklabel, but no partitions.
*
* This function is based on fdisk_get_disklabel_item() and prints all label
* specific information by ASK interface (FDISK_ASKTYPE_INFO, aka fdisk_info()).
* The function requires enabled "details" by fdisk_enable_details().
*
* It's recommended to use fdisk_get_disklabel_item() if you need better
* control on output and formatting.
*
* Returns: 0 on success, otherwise, a corresponding error.
*/
int fdisk_list_disklabel(struct fdisk_context *cxt)
{
int id = 0, rc = 0;
struct fdisk_labelitem item = { .id = id };
if (!cxt || !cxt->label)
return -EINVAL;
if (!cxt->display_details)
return 0;
/* List all label items */
do {
/* rc: < 0 error, 0 success, 1 unknown item, 2 out of range */
rc = fdisk_get_disklabel_item(cxt, id++, &item);
if (rc != 0)
continue;
switch (item.type) {
case 'j':
fdisk_info(cxt, "%s: %ju", item.name, item.data.num64);
break;
case 's':
if (item.data.str && item.name)
fdisk_info(cxt, "%s: %s", item.name, item.data.str);
break;
}
fdisk_reset_labelitem(&item);
} while (rc == 0 || rc == 1);
return rc < 0 ? rc : 0;
}
/**
* fdisk_get_disklabel_id:
* @cxt: fdisk context
* @id: returns pointer to allocated string (MBR Id or GPT dirk UUID)
*
* Returns: 0 on success, otherwise, a corresponding error.
*/
int fdisk_get_disklabel_id(struct fdisk_context *cxt, char **id)
{
struct fdisk_labelitem item;
int rc;
if (!cxt || !cxt->label || !id)
return -EINVAL;
DBG(CXT, ul_debugobj(cxt, "asking for disk %s ID", cxt->label->name));
rc = fdisk_get_disklabel_item(cxt, FDISK_LABELITEM_ID, &item);
if (rc == 0)
*id = item.data.str;
if (rc > 0)
rc = 0;
return rc;
}
static int test_listitems(struct fdisk_test *ts, int argc, char *argv[])
{
const char *disk = argv[1];
struct fdisk_context *cxt;
struct fdisk_labelitem *item;
int i = 0, rc;
cxt = fdisk_new_context();
item = fdisk_new_labelitem();
fdisk_assign_device(cxt, disk, 1);
do {
rc = fdisk_get_disklabel_item(cxt, i++, item);
switch (rc) {
case 0: /* success */
{
const char *name = fdisk_labelitem_get_name(item);
const char *str;
uint64_t num;
if (fdisk_labelitem_is_string(item)
&& fdisk_labelitem_get_data_string(item, &str) == 0)
printf("%s: %s\n", name, str);
else if (fdisk_labelitem_get_data_u64(item, &num) == 0)
printf("%s: %ju\n", name, num);
break;
}
case 1: /* item unsuported by label -- ignore */
rc = 0;
break;
case 2: /* end (out of range) */
break;
default: /* error */
break;
}
} while (rc == 0);
fdisk_unref_labelitem(item);
fdisk_unref_context(cxt);
return rc < 0 ? rc : 0;
}
