xref: /illumos-gate/usr/src/uts/common/sys/uuid.h (revision fafb665d)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #ifndef	_SYS_UUID_H
28 #define	_SYS_UUID_H
29 
30 #ifdef	__cplusplus
31 extern "C" {
32 #endif
33 
34 /*
35  * The copyright in this file is taken from the original Leach
36  * & Salz UUID specification, from which this implementation
37  * is derived.
38  */
39 
40 /*
41  * Copyright (c) 1990- 1993, 1996 Open Software Foundation, Inc.
42  * Copyright (c) 1989 by Hewlett-Packard Company, Palo Alto, Ca. &
43  * Digital Equipment Corporation, Maynard, Mass.  Copyright (c) 1998
44  * Microsoft.  To anyone who acknowledges that this file is provided
45  * "AS IS" without any express or implied warranty: permission to use,
46  * copy, modify, and distribute this file for any purpose is hereby
47  * granted without fee, provided that the above copyright notices and
48  * this notice appears in all source code copies, and that none of the
49  * names of Open Software Foundation, Inc., Hewlett-Packard Company,
50  * or Digital Equipment Corporation be used in advertising or
51  * publicity pertaining to distribution of the software without
52  * specific, written prior permission.  Neither Open Software
53  * Foundation, Inc., Hewlett-Packard Company, Microsoft, nor Digital
54  * Equipment Corporation makes any representations about the
55  * suitability of this software for any purpose.
56  */
57 
58 #include <sys/types.h>
59 #include <sys/byteorder.h>
60 
61 typedef struct {
62 	uint8_t		nodeID[6];
63 } uuid_node_t;
64 
65 /*
66  * The uuid type used throughout when referencing uuids themselves
67  */
68 struct uuid {
69 	uint32_t	time_low;
70 	uint16_t	time_mid;
71 	uint16_t	time_hi_and_version;
72 	uint8_t		clock_seq_hi_and_reserved;
73 	uint8_t		clock_seq_low;
74 	uint8_t		node_addr[6];
75 };
76 
77 #define	UUID_LEN	16
78 
79 #define	UUID_PRINTABLE_STRING_LENGTH 37
80 
81 typedef uchar_t		uuid_t[UUID_LEN];
82 
83 /*
84  * Convert a uuid to/from little-endian format
85  */
86 #define	UUID_LE_CONVERT(dest, src)					\
87 {									\
88 	(dest) = (src);							\
89 	(dest).time_low = LE_32((dest).time_low);			\
90 	(dest).time_mid = LE_16((dest).time_mid);			\
91 	(dest).time_hi_and_version = LE_16((dest).time_hi_and_version);	\
92 }
93 
94 #ifdef __cplusplus
95 }
96 #endif
97 
98 #endif /* _SYS_UUID_H */
99