/*

 * 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 hpt45x_metadata {

  uint32_t  magic;

};

#define HPT45X_MAGIC_OK     0x5a7816f3

#define HPT45X_MAGIC_BAD    0x5a7816fd

static int probe_highpoint45x(blkid_probe pr,

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

{

  struct hpt45x_metadata *hpt;

  uint64_t off;

  uint32_t magic;

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

    return 1;

  off = ((pr->size / 0x200) - 11) * 0x200;

  hpt = (struct hpt45x_metadata *)

      blkid_probe_get_buffer(pr,

          off,

          sizeof(struct hpt45x_metadata));

  if (!hpt)

    return errno ? -errno : 1;

  magic = le32_to_cpu(hpt->magic);

  if (magic != HPT45X_MAGIC_OK && magic != HPT45X_MAGIC_BAD)

    return 1;

  if (blkid_probe_set_magic(pr, off, sizeof(hpt->magic),

        (unsigned char *) &hpt->magic))

    return 1;

  return 0;

}

static int probe_highpoint37x(blkid_probe pr,

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

{

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

    return 1;

  return 0;

}

const struct blkid_idinfo highpoint45x_idinfo = {

  .name   = "hpt45x_raid_member",

  .usage    = BLKID_USAGE_RAID,

  .minsz    = 0x10000,

  .probefunc  = probe_highpoint45x,

  .magics   = BLKID_NONE_MAGIC

};

const struct blkid_idinfo highpoint37x_idinfo = {

  .name   = "hpt37x_raid_member",

  .usage    = BLKID_USAGE_RAID,

  .probefunc  = probe_highpoint37x,

  .magics   = {

    /*

     * Superblock offset:                     4608 bytes  (9 sectors)

     * Magic string offset within superblock:   32 bytes

     *

     * kboff = (4608 + 32) / 1024

     * sboff = (4608 + 32) % kboff

     */

    { .magic = "\xf0\x16\x78\x5a", .len = 4, .kboff = 4, .sboff = 544 },

    { .magic = "\xfd\x16\x78\x5a", .len = 4, .kboff = 4, .sboff = 544 },

    { NULL }

  }

};