/*

 * Copyright (C) 2018 by Kenneth Van Alstyne <kvanals@kvanals.org>

 *

 * This file may be redistributed under the terms of the

 * GNU Lesser General Public License.

 *

 *

 * Ceph BlueStore is one of the supported storage

 * methods for Object Storage Devices (OSDs).

 * This is used to detect the backing block devices

 * used for these types of OSDs in a Ceph Cluster.

 *

 */

#include <stdio.h>

#include <stdlib.h>

#include <unistd.h>

#include <string.h>

#include <errno.h>

#include <ctype.h>

#include <inttypes.h>

#include <stddef.h>

#include "bitops.h"

#include "superblocks.h"

#define BLUESTORE_MAGIC_L   22

struct bluestore_phdr {

  uint8_t   magic[BLUESTORE_MAGIC_L];

} __attribute__((packed));

static int probe_bluestore(blkid_probe pr, const struct blkid_idmag *mag)

{

  const struct bluestore_phdr *header;

  header = blkid_probe_get_sb(pr, mag, struct bluestore_phdr);

  if (header == NULL)

    return errno ? -errno : 1;

  return 0;

}

const struct blkid_idinfo bluestore_idinfo =

{

  .name   = "ceph_bluestore",

  .usage    = BLKID_USAGE_OTHER,

  .probefunc  = probe_bluestore,

  .magics   =

  {

    { .magic = "bluestore block device", .len = 22 },

    { NULL }

  }

};