release/src/router/busybox/util-linux/volume_id/unused_minix.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 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
  38 int 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 }