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/*
* volume_id - reads filesystem label and uuid
*
* Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org>
*
* 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.
*/
#ifndef _GNU_SOURCE
#define _GNU_SOURCE 1
#endif
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>
#include "volume_id.h"
#include "logging.h"
#include "util.h"
struct isw_meta {
uint8_t sig[32];
uint32_t check_sum;
uint32_t mpb_size;
uint32_t family_num;
uint32_t generation_num;
} PACKED;
#define ISW_SIGNATURE "Intel Raid ISM Cfg Sig. "
int volume_id_probe_intel_software_raid(struct volume_id *id, uint64_t off, uint64_t size)
{
const uint8_t *buf;
uint64_t meta_off;
struct isw_meta *isw;
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)-2) * 0x200;
buf = volume_id_get_buffer(id, off + meta_off, 0x200);
if (buf == NULL)
return -1;
isw = (struct isw_meta *) buf;
if (memcmp(isw->sig, ISW_SIGNATURE, sizeof(ISW_SIGNATURE)-1) != 0)
return -1;
volume_id_set_usage(id, VOLUME_ID_RAID);
memcpy(id->type_version, &isw->sig[sizeof(ISW_SIGNATURE)-1], 6);
id->type = "isw_raid_member";
return 0;
}
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