summaryrefslogtreecommitdiff
path: root/extras/volume_id/lib/highpoint.c
blob: 06290151179667e65cfe755bd85016e95aad474a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
/*
 * volume_id - reads filesystem label and uuid
 *
 * Copyright (C) 2004 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 "libvolume_id.h"
#include "util.h"

struct hpt37x_meta {
	uint8_t		filler1[32];
	uint32_t	magic;
} PACKED;

struct hpt45x_meta {
	uint32_t	magic;
} PACKED;

#define HPT37X_CONFIG_OFF		0x1200
#define HPT37X_MAGIC_OK			0x5a7816f0
#define HPT37X_MAGIC_BAD		0x5a7816fd

#define HPT45X_MAGIC_OK			0x5a7816f3
#define HPT45X_MAGIC_BAD		0x5a7816fd


int volume_id_probe_highpoint_37x_raid(struct volume_id *id, uint64_t off, uint64_t size)
{
	const uint8_t *buf;
	struct hpt37x_meta *hpt;
	uint32_t magic;

	info("probing at offset 0x%llx\n", (unsigned long long) off);

	buf = volume_id_get_buffer(id, off + HPT37X_CONFIG_OFF, 0x200);
	if (buf == NULL)
		return -1;

	hpt = (struct hpt37x_meta *) buf;
	magic = le32_to_cpu(hpt->magic);
	if (magic != HPT37X_MAGIC_OK && magic != HPT37X_MAGIC_BAD)
		return -1;

	volume_id_set_usage(id, VOLUME_ID_RAID);
	id->type = "highpoint_raid_member";

	return 0;
}

int volume_id_probe_highpoint_45x_raid(struct volume_id *id, uint64_t off, uint64_t size)
{
	const uint8_t *buf;
	struct hpt45x_meta *hpt;
	uint64_t meta_off;
	uint32_t magic;

	dbg("probing at offset 0x%llx, size 0x%llx\n",
	    (unsigned long long) off, (unsigned long long) size);

	if (size < 0x10000)
		return -1;

	meta_off = ((size / 0x200)-11) * 0x200;
	buf = volume_id_get_buffer(id, off + meta_off, 0x200);
	if (buf == NULL)
		return -1;

	hpt = (struct hpt45x_meta *) buf;
	magic = le32_to_cpu(hpt->magic);
	if (magic != HPT45X_MAGIC_OK && magic != HPT45X_MAGIC_BAD)
		return -1;

	volume_id_set_usage(id, VOLUME_ID_RAID);
	id->type = "highpoint_raid_member";

	return 0;
}