1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
--- hal-0.5.7.1/volume_id/via_raid.c 2006-02-21 20:15:17.000000000 +0100
+++ hal-0.5.7.1/volume_id/via_raid.c-new 2006-12-16 17:48:31.000000000 +0100
@@ -3,6 +3,9 @@
*
* Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org>
*
+ * Based on information taken from dmraid:
+ * Copyright (C) 2004-2006 Heinz Mauelshagen, Red Hat GmbH
+ *
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation version 2 of the License.
@@ -31,7 +34,7 @@
uint16_t signature;
uint8_t version_number;
struct via_array {
- uint16_t disk_bits;
+ uint16_t disk_bit_mask;
uint8_t disk_array_ex;
uint32_t capacity_low;
uint32_t capacity_high;
@@ -43,6 +46,17 @@
#define VIA_SIGNATURE 0xAA55
+/* 8 bit checksum on first 50 bytes of metadata. */
+static uint8_t meta_checksum(struct via_meta *via)
+{
+ uint8_t i = 50, sum = 0;
+
+ while (i--)
+ sum += ((uint8_t*) via)[i];
+
+ return sum == via->checksum;
+}
+
int volume_id_probe_via_raid(struct volume_id *id, uint64_t off, uint64_t size)
{
const uint8_t *buf;
@@ -68,6 +82,9 @@
if (via->version_number > 1)
return -1;
+ if (!meta_checksum(via))
+ return -1;
+
volume_id_set_usage(id, VOLUME_ID_RAID);
snprintf(id->type_version, sizeof(id->type_version)-1, "%u", via->version_number);
id->type = "via_raid_member";
|
GitWeb
