2 * volume_id - reads filesystem label and uuid
4 * Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org>
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.
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.
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
36 #include "volume_id.h"
41 struct minix_super_block
45 uint16_t s_imap_blocks;
46 uint16_t s_zmap_blocks;
47 uint16_t s_firstdatazone;
48 uint16_t s_log_zone_size;
53 } __attribute__((__packed__));
55 #define MINIX_SUPERBLOCK_OFFSET 0x400
57 int volume_id_probe_minix(struct volume_id *id, uint64_t off)
59 struct minix_super_block *ms;
61 dbg("probing at offset 0x%llx", (unsigned long long) off);
63 ms = (struct minix_super_block *) volume_id_get_buffer(id, off + MINIX_SUPERBLOCK_OFFSET, 0x200);
67 if (le16_to_cpu(ms->s_magic) == 0x137f) {
68 strcpy(id->type_version, "1");
72 if (le16_to_cpu(ms->s_magic) == 0x1387) {
73 strcpy(id->type_version, "1");
77 if (le16_to_cpu(ms->s_magic) == 0x2468) {
78 strcpy(id->type_version, "2");
82 if (le16_to_cpu(ms->s_magic) == 0x2478) {
83 strcpy(id->type_version, "2");
90 volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);