1/*	$NetBSD: uuid.h,v 1.1.1.1 2008/12/22 00:18:00 haad Exp $	*/
2
3/*
4 * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
5 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
6 *
7 * This file is part of LVM2.
8 *
9 * This copyrighted material is made available to anyone wishing to use,
10 * modify, copy, or redistribute it subject to the terms and conditions
11 * of the GNU Lesser General Public License v.2.1.
12 *
13 * You should have received a copy of the GNU Lesser General Public License
14 * along with this program; if not, write to the Free Software Foundation,
15 * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
16 */
17
18#ifndef _LVM_UUID_H
19#define _LVM_UUID_H
20
21#define ID_LEN 32
22#define ID_LEN_S "32"
23
24struct id {
25	int8_t uuid[ID_LEN];
26};
27
28/*
29 * Unique logical volume identifier
30 * With format1 this is VG uuid + LV uuid + '\0' + padding
31 */
32union lvid {
33	struct id id[2];
34	char s[2 * sizeof(struct id) + 1 + 7];
35};
36
37int lvid_from_lvnum(union lvid *lvid, struct id *vgid, uint32_t lv_num);
38int lvnum_from_lvid(union lvid *lvid);
39int lvid_in_restricted_range(union lvid *lvid);
40
41void uuid_from_num(char *uuid, uint32_t num);
42
43int lvid_create(union lvid *lvid, struct id *vgid);
44int id_create(struct id *id);
45int id_valid(struct id *id);
46int id_equal(const struct id *lhs, const struct id *rhs);
47
48/*
49 * Fills 'buffer' with a more human readable form
50 * of the uuid.
51 */
52int id_write_format(const struct id *id, char *buffer, size_t size);
53
54/*
55 * Reads a formatted uuid.
56 */
57int id_read_format(struct id *id, const char *buffer);
58
59#endif
60