2 * volume_id - reads filesystem label and uuid
4 * Copyright (C) 2004 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
35 #include <asm/types.h>
37 #include "../volume_id.h"
38 #include "../logging.h"
42 struct reiserfs_super_block {
48 __u32 orig_journal_size;
56 } __attribute__((__packed__));
58 #define REISERFS1_SUPERBLOCK_OFFSET 0x2000
59 #define REISERFS_SUPERBLOCK_OFFSET 0x10000
61 int volume_id_probe_reiserfs(struct volume_id *id, __u64 off)
63 struct reiserfs_super_block *rs;
65 dbg("probing at offset %llu", off);
67 rs = (struct reiserfs_super_block *) volume_id_get_buffer(id, off + REISERFS_SUPERBLOCK_OFFSET, 0x200);
71 if (memcmp(rs->magic, "ReIsEr2Fs", 9) == 0) {
72 strcpy(id->type_version, "3.6");
76 if (memcmp(rs->magic, "ReIsEr3Fs", 9) == 0) {
77 strcpy(id->type_version, "JR");
81 rs = (struct reiserfs_super_block *) volume_id_get_buffer(id, off + REISERFS1_SUPERBLOCK_OFFSET, 0x200);
85 if (memcmp(rs->magic, "ReIsErFs", 8) == 0) {
86 strcpy(id->type_version, "3.5");
93 volume_id_set_label_raw(id, rs->label, 16);
94 volume_id_set_label_string(id, rs->label, 16);
95 volume_id_set_uuid(id, rs->uuid, UUID_DCE);
97 volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
98 id->type = "reiserfs";