1 /*-
2  * Copyright (c) 2002 Marcel Moolenaar
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  *
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25  *
26  * $FreeBSD$
27  */
28 
29 /*
30  * Portions copyright (c) 2014-2020, ARM Limited and Contributors.
31  * All rights reserved.
32  */
33 
34 #ifndef UUID_H
35 #define UUID_H
36 
37 /* Length of a node address (an IEEE 802 address). */
38 #define	_UUID_NODE_LEN		6
39 
40 /* Length of UUID string including dashes. */
41 #define _UUID_STR_LEN		36
42 
43 /*
44  * See also:
45  *      http://www.opengroup.org/dce/info/draft-leach-uuids-guids-01.txt
46  *      http://www.opengroup.org/onlinepubs/009629399/apdxa.htm
47  *
48  * A DCE 1.1 compatible source representation of UUIDs.
49  */
50 struct uuid {
51 	uint8_t		time_low[4];
52 	uint8_t		time_mid[2];
53 	uint8_t		time_hi_and_version[2];
54 	uint8_t		clock_seq_hi_and_reserved;
55 	uint8_t		clock_seq_low;
56 	uint8_t		node[_UUID_NODE_LEN];
57 };
58 
59 struct efi_guid {
60 	uint32_t time_low;
61 	uint16_t time_mid;
62 	uint16_t time_hi_and_version;
63 	uint8_t clock_seq_and_node[8];
64 };
65 
66 union uuid_helper_t {
67 	struct uuid uuid_struct;
68 	struct efi_guid efi_guid;
69 };
70 
71 /* XXX namespace pollution? */
72 typedef struct uuid uuid_t;
73 
74 #endif /* UUID_H */
75