busybox/util-linux/volume_id/unused_via_raid.c
Denys Vlasenko f560422fa0 Big cleanup in config help and description
Redundant help texts (one which only repeats the description)
are deleted.

Descriptions and help texts are trimmed.

Some config options are moved, even across menus.

No config option _names_ are changed.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-01-10 14:58:54 +01:00

76 lines
2.0 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
*/
//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;
}