LXR busybox/util-linux/volume_id/unused_isw

   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//config:### config FEATURE_VOLUMEID_ISWRAID
  21//config:###    bool "intel raid"
  22//config:###    default y
  23//config:###    depends on VOLUMEID
  24
  25//kbuild:### lib-$(CONFIG_FEATURE_VOLUMEID_ISWRAID) += isw_raid.o
  26
  27#include "volume_id_internal.h"
  28
  29struct isw_meta {
  30        uint8_t         sig[32];
  31        uint32_t        check_sum;
  32        uint32_t        mpb_size;
  33        uint32_t        family_num;
  34        uint32_t        generation_num;
  35} PACKED;
  36
  37#define ISW_SIGNATURE           "Intel Raid ISM Cfg Sig. "
  38
  39
  40int FAST_FUNC volume_id_probe_intel_software_raid(struct volume_id *id, uint64_t off, uint64_t size)
  41{
  42        uint64_t meta_off;
  43        struct isw_meta *isw;
  44
  45        dbg("probing at offset 0x%llx, size 0x%llx",
  46            (unsigned long long) off, (unsigned long long) size);
  47
  48        if (size < 0x10000)
  49                return -1;
  50
  51        meta_off = ((size / 0x200)-2) * 0x200;
  52        isw = volume_id_get_buffer(id, off + meta_off, 0x200);
  53        if (isw == NULL)
  54                return -1;
  55
  56        if (memcmp(isw->sig, ISW_SIGNATURE, sizeof(ISW_SIGNATURE)-1) != 0)
  57                return -1;
  58
  59//      volume_id_set_usage(id, VOLUME_ID_RAID);
  60//      memcpy(id->type_version, &isw->sig[sizeof(ISW_SIGNATURE)-1], 6);
  61//      id->type = "isw_raid_member";
  62
  63        return 0;
  64}
  65