/*

 * Copyright (C) 2008 Karel Zak <kzak@redhat.com>

 *

 * Inspired by libvolume_id by

 *     Kay Sievers <kay.sievers@vrfy.org>

 *

 * This file may be redistributed under the terms of the

 * GNU Lesser General Public License.

 */

#include <stdio.h>

#include <stdlib.h>

#include <unistd.h>

#include <string.h>

#include <stdint.h>

#include "superblocks.h"

struct isw_metadata {

  uint8_t   sig[32];

  uint32_t  check_sum;

  uint32_t  mpb_size;

  uint32_t  family_num;

  uint32_t  generation_num;

};

#define ISW_SIGNATURE   "Intel Raid ISM Cfg Sig. "

static int probe_iswraid(blkid_probe pr,

    const struct blkid_idmag *mag __attribute__((__unused__)))

{

  uint64_t off;

  unsigned int sector_size;

  struct isw_metadata *isw;

  if (!S_ISREG(pr->mode) && !blkid_probe_is_wholedisk(pr))

    return 1;

  sector_size = blkid_probe_get_sectorsize(pr);

  off = ((pr->size / sector_size) - 2) * sector_size;

  isw = (struct isw_metadata *)blkid_probe_get_buffer(pr,

      off, sizeof(struct isw_metadata));

  if (!isw)

    return errno ? -errno : 1;

  if (memcmp(isw->sig, ISW_SIGNATURE, sizeof(ISW_SIGNATURE)-1) != 0)

    return 1;

  if (blkid_probe_sprintf_version(pr, "%6s",

      &isw->sig[sizeof(ISW_SIGNATURE)-1]) != 0)

    return 1;

  if (blkid_probe_set_magic(pr, off, sizeof(isw->sig),

        (unsigned char *) isw->sig))

    return 1;

  return 0;

}

const struct blkid_idinfo iswraid_idinfo = {

  .name   = "isw_raid_member",

  .usage    = BLKID_USAGE_RAID,

  .minsz    = 0x10000,

  .probefunc  = probe_iswraid,

  .magics   = BLKID_NONE_MAGIC

};