Contents of /trunk/mkinitrd-magellan/busybox/util-linux/volume_id/jfs.c
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Sun May 30 11:32:42 2010 UTC (13 years, 11 months ago) by niro
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Sun May 30 11:32:42 2010 UTC (13 years, 11 months ago) by niro
File MIME type: text/plain
File size: 1726 byte(s)
-updated to busybox-1.16.1 and enabled blkid/uuid support in default config
1 | /* |
2 | * volume_id - reads filesystem label and uuid |
3 | * |
4 | * Copyright (C) 2004 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 jfs_super_block { |
24 | uint8_t magic[4]; |
25 | uint32_t version; |
26 | uint64_t size; |
27 | uint32_t bsize; |
28 | uint32_t dummy1; |
29 | uint32_t pbsize; |
30 | uint32_t dummy2[27]; |
31 | uint8_t uuid[16]; |
32 | uint8_t label[16]; |
33 | uint8_t loguuid[16]; |
34 | } PACKED; |
35 | |
36 | #define JFS_SUPERBLOCK_OFFSET 0x8000 |
37 | |
38 | int FAST_FUNC volume_id_probe_jfs(struct volume_id *id /*,uint64_t off*/) |
39 | { |
40 | #define off ((uint64_t)0) |
41 | struct jfs_super_block *js; |
42 | |
43 | dbg("probing at offset 0x%llx", (unsigned long long) off); |
44 | |
45 | js = volume_id_get_buffer(id, off + JFS_SUPERBLOCK_OFFSET, 0x200); |
46 | if (js == NULL) |
47 | return -1; |
48 | |
49 | if (memcmp(js->magic, "JFS1", 4) != 0) |
50 | return -1; |
51 | |
52 | // volume_id_set_label_raw(id, js->label, 16); |
53 | volume_id_set_label_string(id, js->label, 16); |
54 | volume_id_set_uuid(id, js->uuid, UUID_DCE); |
55 | |
56 | // volume_id_set_usage(id, VOLUME_ID_FILESYSTEM); |
57 | // id->type = "jfs"; |
58 | |
59 | return 0; |
60 | } |