1/*
2 * volume_id - reads filesystem label and uuid
3 *
4 * Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org>
5 *
6 *	This program is free software; you can redistribute it and/or modify it
7 *	under the terms of the GNU General Public License as published by the
8 *	Free Software Foundation version 2 of the License.
9 */
10
11#ifndef _GNU_SOURCE
12#define _GNU_SOURCE 1
13#endif
14
15#ifdef HAVE_CONFIG_H
16#  include <config.h>
17#endif
18
19#include <stdio.h>
20#include <stdlib.h>
21#include <unistd.h>
22#include <string.h>
23#include <errno.h>
24#include <ctype.h>
25
26#include "libvolume_id.h"
27#include "util.h"
28
29struct lsi_meta {
30	uint8_t		sig[6];
31} PACKED;
32
33#define LSI_SIGNATURE		"$XIDE$"
34
35int volume_id_probe_lsi_mega_raid(struct volume_id *id, uint64_t off, uint64_t size)
36{
37	const uint8_t *buf;
38	uint64_t meta_off;
39	struct lsi_meta *lsi;
40
41	info("probing at offset 0x%llx, size 0x%llx",
42	    (unsigned long long) off, (unsigned long long) size);
43
44	if (size < 0x10000)
45		return -1;
46
47	meta_off = ((size / 0x200)-1) * 0x200;
48	buf = volume_id_get_buffer(id, off + meta_off, 0x200);
49	if (buf == NULL)
50		return -1;
51
52	lsi = (struct lsi_meta *) buf;
53	if (memcmp(lsi->sig, LSI_SIGNATURE, sizeof(LSI_SIGNATURE)-1) != 0)
54		return -1;
55
56	volume_id_set_usage(id, VOLUME_ID_RAID);
57	id->type = "lsi_mega_raid_member";
58
59	return 0;
60}
61