LXR busybox/util-linux/volume_id/unused_via

   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
  23struct via_meta {
  24        uint16_t        signature;
  25        uint8_t         version_number;
  26        struct via_array {
  27                uint16_t        disk_bits;
  28                uint8_t         disk_array_ex;
  29                uint32_t        capacity_low;
  30                uint32_t        capacity_high;
  31                uint32_t        serial_checksum;
  32        } __attribute((packed)) array;
  33        uint32_t        serial_checksum[8];
  34        uint8_t         checksum;
  35} __attribute__((packed));
  36
  37#define VIA_SIGNATURE           0xAA55
  38
  39int volume_id_probe_via_raid(struct volume_id *id, uint64_t off, uint64_t size)
  40{
  41        uint64_t meta_off;
  42        struct via_meta *via;
  43
  44        dbg("probing at offset 0x%llx, size 0x%llx",
  45            (unsigned long long) off, (unsigned long long) size);
  46
  47        if (size < 0x10000)
  48                return -1;
  49
  50        meta_off = ((size / 0x200)-1) * 0x200;
  51
  52        via = volume_id_get_buffer(id, off + meta_off, 0x200);
  53        if (via == NULL)
  54                return -1;
  55
  56        if (via->signature != cpu_to_le16(VIA_SIGNATURE))
  57                return -1;
  58
  59        if (via->version_number > 1)
  60                return -1;
  61
  62//      volume_id_set_usage(id, VOLUME_ID_RAID);
  63//      id->type_version[0] = '0' + via->version_number;
  64//      id->type_version[1] = '\0';
  65//      id->type = "via_raid_member";
  66
  67        return 0;
  68}
  69