release/src/router/busybox/util-linux/volume_id/unused_hpfs.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 hpfs_super {
  24         uint8_t         magic[4];
  25         uint8_t         version;
  26 } PACKED;
  27
  28 #define HPFS_SUPERBLOCK_OFFSET                  0x2000
  29
  30 int FAST_FUNC volume_id_probe_hpfs(struct volume_id *id, uint64_t off)
  31 {
  32         struct hpfs_super *hs;
  33
  34         dbg("probing at offset 0x%llx", (unsigned long long) off);
  35
  36         hs = volume_id_get_buffer(id, off + HPFS_SUPERBLOCK_OFFSET, 0x200);
  37         if (hs == NULL)
  38                 return -1;
  39
  40         if (memcmp(hs->magic, "\x49\xe8\x95\xf9", 4) == 0) {
  41 //              sprintf(id->type_version, "%u", hs->version);
  42 //              volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
  43 //              id->type = "hpfs";
  44                 return 0;
  45         }
  46
  47         return -1;
  48 }