*
* 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.
#include <ctype.h>
#include "libvolume_id.h"
+#include "libvolume_id-private.h"
#include "util.h"
struct via_meta {
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;
#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;
uint64_t meta_off;
struct via_meta *via;
- dbg("probing at offset 0x%llx, size 0x%llx",
+ dbg("probing at offset 0x%llx, size 0x%llx\n",
(unsigned long long) off, (unsigned long long) size);
if (size < 0x10000)
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";