LXR busybox/util-linux/volume_id/unused

   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 minix_super_block {
  24        uint16_t        s_ninodes;
  25        uint16_t        s_nzones;
  26        uint16_t        s_imap_blocks;
  27        uint16_t        s_zmap_blocks;
  28        uint16_t        s_firstdatazone;
  29        uint16_t        s_log_zone_size;
  30        uint32_t        s_max_size;
  31        uint16_t        s_magic;
  32        uint16_t        s_state;
  33        uint32_t        s_zones;
  34} PACKED;
  35
  36#define MINIX_SUPERBLOCK_OFFSET                 0x400
  37
  38int FAST_FUNC volume_id_probe_minix(struct volume_id *id, uint64_t off)
  39{
  40        struct minix_super_block *ms;
  41
  42        dbg("probing at offset 0x%llx", (unsigned long long) off);
  43
  44        ms = volume_id_get_buffer(id, off + MINIX_SUPERBLOCK_OFFSET, 0x200);
  45        if (ms == NULL)
  46                return -1;
  47
  48        if (ms->s_magic == cpu_to_le16(0x137f)) {
  49//              id->type_version[0] = '1';
  50                goto found;
  51        }
  52
  53        if (ms->s_magic == cpu_to_le16(0x1387)) {
  54//              id->type_version[0] = '1';
  55                goto found;
  56        }
  57
  58        if (ms->s_magic == cpu_to_le16(0x2468)) {
  59//              id->type_version[0] = '2';
  60                goto found;
  61        }
  62
  63        if (ms->s_magic == cpu_to_le16(0x2478)) {
  64//              id->type_version[0] = '2';
  65                goto found;
  66        }
  67
  68        return -1;
  69
  70 found:
  71//      id->type_version[1] = '\0';
  72//      volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
  73//      id->type = "minix";
  74        return 0;
  75}
  76