blkid_devno_to_devname ()

char *
blkid_devno_to_devname (dev_t devno);

This function finds the pathname to a block device with a given device number.

blkid_devno_to_wholedisk ()

int
blkid_devno_to_wholedisk (dev_t dev,
                          char *diskname,
                          size_t len,
                          dev_t *diskdevno);

This function uses sysfs to convert the devno device number to the *name* of the whole disk. The function DOES NOT return full device name. The dev argument could be partition or whole disk -- both is converted.

For example: sda1, 0x0801 --> sda, 0x0800

For conversion to the full disk *path* use blkid_devno_to_devname(), for example:

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dev_t dev = 0x0801, disk;       // sda1 = 8:1
char *diskpath, diskname[32];

blkid_devno_to_wholedisk(dev, diskname, sizeof(diskname), &disk);
diskpath = blkid_devno_to_devname(disk);

// print "0x0801: sda, /dev/sda, 8:0
printf("0x%x: %s, %s, %d:%d\n",
    dev, diskname, diskpath, major(disk), minor(disk));

free(diskpath);

blkid_get_dev_size ()

blkid_loff_t
blkid_get_dev_size (int fd);

blkid_get_library_version ()

int
blkid_get_library_version (const char **ver_string,
                           const char **date_string);

blkid_parse_tag_string ()

int
blkid_parse_tag_string (const char *token,
                        char **ret_type,
                        char **ret_val);

blkid_parse_version_string ()

int
blkid_parse_version_string (const char *ver_string);

blkid_send_uevent ()

int
blkid_send_uevent (const char *devname,
                   const char *action);

blkid_loff_t

typedef int64_t blkid_loff_t;

64-bit signed number for offsets and sizes

BLKID_VERSION

#define BLKID_VERSION   "2.32.1"

BLKID_DATE

#define BLKID_DATE      "16-Jul-2018"

BLKID_FLTR_NOTIN

#define BLKID_FLTR_NOTIN		1

BLKID_FLTR_ONLYIN

#define BLKID_FLTR_ONLYIN		2

BLKID_DEV_CREATE

#define BLKID_DEV_CREATE 0x0001

BLKID_DEV_FIND

#define BLKID_DEV_FIND		0x0000

BLKID_DEV_NORMAL

#define BLKID_DEV_NORMAL (BLKID_DEV_CREATE | BLKID_DEV_VERIFY)

BLKID_DEV_VERIFY

#define BLKID_DEV_VERIFY 0x0002

BLKID_PARTS_ENTRY_DETAILS

#define BLKID_PARTS_ENTRY_DETAILS (1 << 2)

BLKID_PARTS_FORCE_GPT

#define BLKID_PARTS_FORCE_GPT		(1 << 1)

BLKID_PARTS_MAGIC

#define BLKID_PARTS_MAGIC		(1 << 3)

BLKID_PROBREQ_LABEL

#define BLKID_PROBREQ_LABEL     BLKID_SUBLKS_LABEL

BLKID_PROBREQ_LABELRAW

#define BLKID_PROBREQ_LABELRAW  BLKID_SUBLKS_LABELRAW

BLKID_PROBREQ_SECTYPE

#define BLKID_PROBREQ_SECTYPE   BLKID_SUBLKS_SECTYPE

BLKID_PROBREQ_TYPE

#define BLKID_PROBREQ_TYPE      BLKID_SUBLKS_TYPE

BLKID_PROBREQ_USAGE

#define BLKID_PROBREQ_USAGE     BLKID_SUBLKS_USAGE

BLKID_PROBREQ_UUID

#define BLKID_PROBREQ_UUID      BLKID_SUBLKS_UUID

BLKID_PROBREQ_UUIDRAW

#define BLKID_PROBREQ_UUIDRAW   BLKID_SUBLKS_UUIDRAW

BLKID_PROBREQ_VERSION

#define BLKID_PROBREQ_VERSION   BLKID_SUBLKS_VERSION

BLKID_SUBLKS_BADCSUM

#define BLKID_SUBLKS_BADCSUM (1 << 10) /* allow a bad checksum */

BLKID_SUBLKS_DEFAULT

#define             BLKID_SUBLKS_DEFAULT

BLKID_SUBLKS_LABEL

#define BLKID_SUBLKS_LABEL (1 << 1) /* read LABEL from superblock */

BLKID_SUBLKS_LABELRAW

#define BLKID_SUBLKS_LABELRAW (1 << 2) /* read and define LABEL_RAW result value*/

BLKID_SUBLKS_MAGIC

#define BLKID_SUBLKS_MAGIC (1 << 9) /* define SBMAGIC and SBMAGIC_OFFSET */

BLKID_SUBLKS_SECTYPE

#define BLKID_SUBLKS_SECTYPE (1 << 6) /* define compatible fs type (second type) */

BLKID_SUBLKS_TYPE

#define BLKID_SUBLKS_TYPE (1 << 5) /* define TYPE result value */

BLKID_SUBLKS_USAGE

#define BLKID_SUBLKS_USAGE (1 << 7) /* define USAGE result value */

BLKID_SUBLKS_UUID

#define BLKID_SUBLKS_UUID (1 << 3) /* read UUID from superblock */

BLKID_SUBLKS_UUIDRAW

#define BLKID_SUBLKS_UUIDRAW (1 << 4) /* read and define UUID_RAW result value */

BLKID_SUBLKS_VERSION

#define BLKID_SUBLKS_VERSION (1 << 8) /* read FS type from superblock */

BLKID_USAGE_CRYPTO

#define BLKID_USAGE_CRYPTO		(1 << 3)

BLKID_USAGE_FILESYSTEM

#define BLKID_USAGE_FILESYSTEM		(1 << 1)

BLKID_USAGE_OTHER

#define BLKID_USAGE_OTHER		(1 << 4)

BLKID_USAGE_RAID

#define BLKID_USAGE_RAID		(1 << 2)