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 | //kbuild:### lib-$(CONFIG_FEATURE_VOLUMEID_VIARAID) += via_raid.o
|
---|
22 |
|
---|
23 | //config:
|
---|
24 | //config:### config FEATURE_VOLUMEID_VIARAID
|
---|
25 | //config:### bool "via raid"
|
---|
26 | //config:### default y
|
---|
27 | //config:### depends on VOLUMEID
|
---|
28 | //config:### help
|
---|
29 | //config:### TODO
|
---|
30 | //config:
|
---|
31 |
|
---|
32 | #include "volume_id_internal.h"
|
---|
33 |
|
---|
34 | struct via_meta {
|
---|
35 | uint16_t signature;
|
---|
36 | uint8_t version_number;
|
---|
37 | struct via_array {
|
---|
38 | uint16_t disk_bits;
|
---|
39 | uint8_t disk_array_ex;
|
---|
40 | uint32_t capacity_low;
|
---|
41 | uint32_t capacity_high;
|
---|
42 | uint32_t serial_checksum;
|
---|
43 | } PACKED array;
|
---|
44 | uint32_t serial_checksum[8];
|
---|
45 | uint8_t checksum;
|
---|
46 | } PACKED;
|
---|
47 |
|
---|
48 | #define VIA_SIGNATURE 0xAA55
|
---|
49 |
|
---|
50 | int FAST_FUNC volume_id_probe_via_raid(struct volume_id *id, uint64_t off, uint64_t size)
|
---|
51 | {
|
---|
52 | uint64_t meta_off;
|
---|
53 | struct via_meta *via;
|
---|
54 |
|
---|
55 | dbg("probing at offset 0x%llx, size 0x%llx",
|
---|
56 | (unsigned long long) off, (unsigned long long) size);
|
---|
57 |
|
---|
58 | if (size < 0x10000)
|
---|
59 | return -1;
|
---|
60 |
|
---|
61 | meta_off = ((size / 0x200)-1) * 0x200;
|
---|
62 |
|
---|
63 | via = volume_id_get_buffer(id, off + meta_off, 0x200);
|
---|
64 | if (via == NULL)
|
---|
65 | return -1;
|
---|
66 |
|
---|
67 | if (via->signature != cpu_to_le16(VIA_SIGNATURE))
|
---|
68 | return -1;
|
---|
69 |
|
---|
70 | if (via->version_number > 1)
|
---|
71 | return -1;
|
---|
72 |
|
---|
73 | // volume_id_set_usage(id, VOLUME_ID_RAID);
|
---|
74 | // id->type_version[0] = '0' + via->version_number;
|
---|
75 | // id->type_version[1] = '\0';
|
---|
76 | // id->type = "via_raid_member";
|
---|
77 |
|
---|
78 | return 0;
|
---|
79 | }
|
---|