release/src/router/busybox/util-linux/volume_id/unused_isw_raid.c

   1 /*
   2  * volume_id - reads filesystem label and uuid
   3  *
   4  * Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org>
   5  *
   6  *      This library is free software; you can redistribute it and/or
   7  *      modify it under the terms of the GNU Lesser General Public
   8  *      License as published by the Free Software Foundation; either
   9  *      version 2.1 of the License, or (at your option) any later version.
  10  *
  11  *      This library is distributed in the hope that it will be useful,
  12  *      but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14  *      Lesser General Public License for more details.
  15  *
  16  *      You should have received a copy of the GNU Lesser General Public
  17  *      License along with this library; if not, write to the Free Software
  18  *      Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  19  */
  20
  21 #include "volume_id_internal.h"
  22
  23 struct isw_meta {
  24         uint8_t         sig[32];
  25         uint32_t        check_sum;
  26         uint32_t        mpb_size;
  27         uint32_t        family_num;
  28         uint32_t        generation_num;
  29 } PACKED;
  30
  31 #define ISW_SIGNATURE           "Intel Raid ISM Cfg Sig. "
  32
  33
  34 int FAST_FUNC volume_id_probe_intel_software_raid(struct volume_id *id, uint64_t off, uint64_t size)
  35 {
  36         uint64_t meta_off;
  37         struct isw_meta *isw;
  38
  39         dbg("probing at offset 0x%llx, size 0x%llx",
  40             (unsigned long long) off, (unsigned long long) size);
  41
  42         if (size < 0x10000)
  43                 return -1;
  44
  45         meta_off = ((size / 0x200)-2) * 0x200;
  46         isw = volume_id_get_buffer(id, off + meta_off, 0x200);
  47         if (isw == NULL)
  48                 return -1;
  49
  50         if (memcmp(isw->sig, ISW_SIGNATURE, sizeof(ISW_SIGNATURE)-1) != 0)
  51                 return -1;
  52
  53 //      volume_id_set_usage(id, VOLUME_ID_RAID);
  54 //      memcpy(id->type_version, &isw->sig[sizeof(ISW_SIGNATURE)-1], 6);
  55 //      id->type = "isw_raid_member";
  56
  57         return 0;
  58 }