1  /*
       2   * Copyright (C) 2008 Karel Zak <kzak@redhat.com>
       3   *
       4   * Inspired by libvolume_id by
       5   *     Kay Sievers <kay.sievers@vrfy.org>
       6   *
       7   * This file may be redistributed under the terms of the
       8   * GNU Lesser General Public License.
       9   */
      10  
      11  #include <stdio.h>
      12  #include <stdlib.h>
      13  #include <unistd.h>
      14  #include <string.h>
      15  #include <stdint.h>
      16  
      17  #include "superblocks.h"
      18  
      19  struct lsi_metadata {
      20  	uint8_t		sig[6];
      21  };
      22  
      23  
      24  #define LSI_SIGNATURE		"$XIDE$"
      25  
      26  static int probe_lsiraid(blkid_probe pr,
      27  		const struct blkid_idmag *mag __attribute__((__unused__)))
      28  {
      29  	uint64_t off;
      30  	struct lsi_metadata *lsi;
      31  
      32  	if (pr->size < 0x10000)
      33  		return 1;
      34  	if (!S_ISREG(pr->mode) && !blkid_probe_is_wholedisk(pr))
      35  		return 1;
      36  
      37  	off = ((pr->size / 0x200) - 1) * 0x200;
      38  	lsi = (struct lsi_metadata *)
      39  		blkid_probe_get_buffer(pr,
      40  				off,
      41  				sizeof(struct lsi_metadata));
      42  	if (!lsi)
      43  		return errno ? -errno : 1;
      44  
      45  	if (memcmp(lsi->sig, LSI_SIGNATURE, sizeof(LSI_SIGNATURE)-1) != 0)
      46  		return 1;
      47  	if (blkid_probe_set_magic(pr, off, sizeof(lsi->sig),
      48  				(unsigned char *) lsi->sig))
      49  		return 1;
      50  	return 0;
      51  }
      52  
      53  const struct blkid_idinfo lsiraid_idinfo = {
      54  	.name		= "lsi_mega_raid_member",
      55  	.usage		= BLKID_USAGE_RAID,
      56  	.probefunc	= probe_lsiraid,
      57  	.magics		= BLKID_NONE_MAGIC
      58  };
      59  
      60