2 * volume_id - reads filesystem label and uuid
4 * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org>
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 2 of the License, or
9 * (at your option) any later version.
11 * This program 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
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
31 #include "libvolume_id.h"
32 #include "libvolume_id-private.h"
34 struct jfs_super_block {
47 #define JFS_SUPERBLOCK_OFFSET 0x8000
49 int volume_id_probe_jfs(struct volume_id *id, uint64_t off, uint64_t size)
51 struct jfs_super_block *js;
53 info("probing at offset 0x%llx\n", (unsigned long long) off);
55 js = (struct jfs_super_block *) volume_id_get_buffer(id, off + JFS_SUPERBLOCK_OFFSET, 0x200);
59 if (memcmp(js->magic, "JFS1", 4) != 0)
62 volume_id_set_label_raw(id, js->label, 16);
63 volume_id_set_label_string(id, js->label, 16);
64 volume_id_set_uuid(id, js->uuid, 0, UUID_DCE);
66 volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);