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/*
* volume_id - reads filesystem label and uuid
*
* Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
//kbuild:### lib-$(CONFIG_FEATURE_VOLUMEID_VIARAID) += via_raid.o
//config:### config FEATURE_VOLUMEID_VIARAID
//config:### bool "via raid"
//config:### default y
//config:### depends on VOLUMEID
#include "volume_id_internal.h"
struct via_meta {
uint16_t signature;
uint8_t version_number;
struct via_array {
uint16_t disk_bits;
uint8_t disk_array_ex;
uint32_t capacity_low;
uint32_t capacity_high;
uint32_t serial_checksum;
} PACKED array;
uint32_t serial_checksum[8];
uint8_t checksum;
} PACKED;
#define VIA_SIGNATURE 0xAA55
int FAST_FUNC volume_id_probe_via_raid(struct volume_id *id, uint64_t off, uint64_t size)
{
uint64_t meta_off;
struct via_meta *via;
dbg("probing at offset 0x%llx, size 0x%llx",
(unsigned long long) off, (unsigned long long) size);
if (size < 0x10000)
return -1;
meta_off = ((size / 0x200)-1) * 0x200;
via = volume_id_get_buffer(id, off + meta_off, 0x200);
if (via == NULL)
return -1;
if (via->signature != cpu_to_le16(VIA_SIGNATURE))
return -1;
if (via->version_number > 1)
return -1;
// volume_id_set_usage(id, VOLUME_ID_RAID);
// id->type_version[0] = '0' + via->version_number;
// id->type_version[1] = '\0';
// id->type = "via_raid_member";
return 0;
}
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