2 * volume_id - reads filesystem label and uuid
4 * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org>
5 * Copyright (C) 2005 Tobias Klauser <tklauser@access.unizh.ch>
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
37 #include "volume_id.h"
42 struct reiserfs_super_block {
43 uint32_t blocks_count;
46 uint32_t journal_block;
48 uint32_t orig_journal_size;
56 } __attribute__((__packed__));
58 struct reiser4_super_block {
64 } __attribute__((__packed__));
66 #define REISERFS1_SUPERBLOCK_OFFSET 0x2000
67 #define REISERFS_SUPERBLOCK_OFFSET 0x10000
69 int volume_id_probe_reiserfs(struct volume_id *id, uint64_t off)
71 struct reiserfs_super_block *rs;
72 struct reiser4_super_block *rs4;
75 dbg("probing at offset 0x%llx", (unsigned long long) off);
77 buf = volume_id_get_buffer(id, off + REISERFS_SUPERBLOCK_OFFSET, 0x200);
81 rs = (struct reiserfs_super_block *) buf;;
82 if (memcmp(rs->magic, "ReIsErFs", 8) == 0) {
83 strcpy(id->type_version, "3.5");
84 id->type = "reiserfs";
87 if (memcmp(rs->magic, "ReIsEr2Fs", 9) == 0) {
88 strcpy(id->type_version, "3.6");
89 id->type = "reiserfs";
92 if (memcmp(rs->magic, "ReIsEr3Fs", 9) == 0) {
93 strcpy(id->type_version, "JR");
94 id->type = "reiserfs";
98 rs4 = (struct reiser4_super_block *) buf;
99 if (memcmp(rs4->magic, "ReIsEr4", 7) == 0) {
100 strcpy(id->type_version, "4");
101 volume_id_set_label_raw(id, rs4->label, 16);
102 volume_id_set_label_string(id, rs4->label, 16);
103 volume_id_set_uuid(id, rs4->uuid, UUID_DCE);
104 id->type = "reiser4";
108 buf = volume_id_get_buffer(id, off + REISERFS1_SUPERBLOCK_OFFSET, 0x200);
112 rs = (struct reiserfs_super_block *) buf;
113 if (memcmp(rs->magic, "ReIsErFs", 8) == 0) {
114 strcpy(id->type_version, "3.5");
115 id->type = "reiserfs";
122 volume_id_set_label_raw(id, rs->label, 16);
123 volume_id_set_label_string(id, rs->label, 16);
124 volume_id_set_uuid(id, rs->uuid, UUID_DCE);
127 volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);