Contents of /trunk/mkinitrd-magellan/busybox/util-linux/volume_id/unused_via_raid.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: 1894 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) 2005 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 via_meta { |
24 | uint16_t signature; |
25 | uint8_t version_number; |
26 | struct via_array { |
27 | uint16_t disk_bits; |
28 | uint8_t disk_array_ex; |
29 | uint32_t capacity_low; |
30 | uint32_t capacity_high; |
31 | uint32_t serial_checksum; |
32 | } PACKED array; |
33 | uint32_t serial_checksum[8]; |
34 | uint8_t checksum; |
35 | } PACKED; |
36 | |
37 | #define VIA_SIGNATURE 0xAA55 |
38 | |
39 | int FAST_FUNC volume_id_probe_via_raid(struct volume_id *id, uint64_t off, uint64_t size) |
40 | { |
41 | uint64_t meta_off; |
42 | struct via_meta *via; |
43 | |
44 | dbg("probing at offset 0x%llx, size 0x%llx", |
45 | (unsigned long long) off, (unsigned long long) size); |
46 | |
47 | if (size < 0x10000) |
48 | return -1; |
49 | |
50 | meta_off = ((size / 0x200)-1) * 0x200; |
51 | |
52 | via = volume_id_get_buffer(id, off + meta_off, 0x200); |
53 | if (via == NULL) |
54 | return -1; |
55 | |
56 | if (via->signature != cpu_to_le16(VIA_SIGNATURE)) |
57 | return -1; |
58 | |
59 | if (via->version_number > 1) |
60 | return -1; |
61 | |
62 | // volume_id_set_usage(id, VOLUME_ID_RAID); |
63 | // id->type_version[0] = '0' + via->version_number; |
64 | // id->type_version[1] = '\0'; |
65 | // id->type = "via_raid_member"; |
66 | |
67 | return 0; |
68 | } |