/*

 * ioctl based topology -- gathers topology information

 *

 * Copyright (C) 2009 Karel Zak <kzak@redhat.com>

 *

 * This file may be redistributed under the terms of the

 * GNU Lesser General Public License.

 *

 */

#include <stdio.h>

#include <string.h>

#include <stdlib.h>

#include <stdint.h>

#include <sys/types.h>

#include <sys/stat.h>

#include <unistd.h>

#include <errno.h>

#include "topology.h"

static int probe_ioctl_tp(blkid_probe pr,

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

{

  uint64_t u64;

  int s32;

  if (ioctl(pr->fd, BLKALIGNOFF, &s32) == -1)

    return 1;

  if (blkid_topology_set_alignment_offset(pr, s32))

    return -1;

  if (ioctl(pr->fd, BLKIOMIN, &s32) == -1)

    return 1;

  if (blkid_topology_set_minimum_io_size(pr, s32))

    return -1;

  if (ioctl(pr->fd, BLKIOOPT, &s32) == -1)

    return 1;

  if (blkid_topology_set_optimal_io_size(pr, s32))

    return -1;

  if (ioctl(pr->fd, BLKPBSZGET, &s32) == -1)

    return 1;

  if (blkid_topology_set_physical_sector_size(pr, s32))

    return -1;

  if (ioctl(pr->fd, BLKGETDISKSEQ, &u64) == -1)

    return 1;

  if (blkid_topology_set_diskseq(pr, u64))

    return -1;

  return 0;

}

const struct blkid_idinfo ioctl_tp_idinfo =

{

  .name   = "ioctl",

  .probefunc  = probe_ioctl_tp,

  .magics   = BLKID_NONE_MAGIC

};