mirror of
https://github.com/sheumann/hush.git
synced 2024-12-30 20:29:21 +00:00
69 lines
1.9 KiB
C
69 lines
1.9 KiB
C
|
/*
|
||
|
|
* 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
|
||
|
|
*/
|
||
|
|
|
||
|
|
#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;
|
||
|
|
} __attribute((packed)) array;
|
||
|
|
uint32_t serial_checksum[8];
|
||
|
|
uint8_t checksum;
|
||
|
|
} __attribute__((packed));
|
||
|
|
|
||
|
|
#define VIA_SIGNATURE 0xAA55
|
||
|
|
|
||
|
|
int 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;
|
||
|
|
}
|