Contents of /trunk/mkinitrd-magellan/busybox/util-linux/volume_id/unused_lvm.c
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Revision 984 -
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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: 2216 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 lvm1_super_block { |
24 | uint8_t id[2]; |
25 | } PACKED; |
26 | |
27 | struct lvm2_super_block { |
28 | uint8_t id[8]; |
29 | uint64_t sector_xl; |
30 | uint32_t crc_xl; |
31 | uint32_t offset_xl; |
32 | uint8_t type[8]; |
33 | } PACKED; |
34 | |
35 | #define LVM1_SB_OFF 0x400 |
36 | |
37 | int FAST_FUNC volume_id_probe_lvm1(struct volume_id *id, uint64_t off) |
38 | { |
39 | struct lvm1_super_block *lvm; |
40 | |
41 | dbg("probing at offset 0x%llx", (unsigned long long) off); |
42 | |
43 | lvm = volume_id_get_buffer(id, off + LVM1_SB_OFF, 0x800); |
44 | if (lvm == NULL) |
45 | return -1; |
46 | |
47 | if (lvm->id[0] != 'H' || lvm->id[1] != 'M') |
48 | return -1; |
49 | |
50 | // volume_id_set_usage(id, VOLUME_ID_RAID); |
51 | // id->type = "LVM1_member"; |
52 | |
53 | return 0; |
54 | } |
55 | |
56 | #define LVM2_LABEL_ID "LABELONE" |
57 | #define LVM2LABEL_SCAN_SECTORS 4 |
58 | |
59 | int FAST_FUNC volume_id_probe_lvm2(struct volume_id *id, uint64_t off) |
60 | { |
61 | const uint8_t *buf; |
62 | unsigned soff; |
63 | struct lvm2_super_block *lvm; |
64 | |
65 | dbg("probing at offset 0x%llx", (unsigned long long) off); |
66 | |
67 | buf = volume_id_get_buffer(id, off, LVM2LABEL_SCAN_SECTORS * 0x200); |
68 | if (buf == NULL) |
69 | return -1; |
70 | |
71 | |
72 | for (soff = 0; soff < LVM2LABEL_SCAN_SECTORS * 0x200; soff += 0x200) { |
73 | lvm = (struct lvm2_super_block *) &buf[soff]; |
74 | |
75 | if (memcmp(lvm->id, LVM2_LABEL_ID, 8) == 0) |
76 | goto found; |
77 | } |
78 | |
79 | return -1; |
80 | |
81 | found: |
82 | // memcpy(id->type_version, lvm->type, 8); |
83 | // volume_id_set_usage(id, VOLUME_ID_RAID); |
84 | // id->type = "LVM2_member"; |
85 | |
86 | return 0; |
87 | } |