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) 2014-2026, Arm Limited and Contributors.
31 * All rights reserved.
32 */
33
34 #ifndef UUID_H
35 #define UUID_H
36
37 #include <stdint.h>
38
39 /* Length of a node address (an IEEE 802 address). */
40 #define _UUID_NODE_LEN 6
41
42 /* Length of UUID string including dashes. */
43 #define _UUID_STR_LEN 36
44
45 /*
46 * See also:
47 * http://www.opengroup.org/dce/info/draft-leach-uuids-guids-01.txt
48 * http://www.opengroup.org/onlinepubs/009629399/apdxa.htm
49 *
50 * A DCE 1.1 compatible source representation of UUIDs.
51 */
52 struct uuid {
53 uint8_t time_low[4];
54 uint8_t time_mid[2];
55 uint8_t time_hi_and_version[2];
56 uint8_t clock_seq_hi_and_reserved;
57 uint8_t clock_seq_low;
58 uint8_t node[_UUID_NODE_LEN];
59 };
60
61 struct efi_guid {
62 uint32_t time_low;
63 uint16_t time_mid;
64 uint16_t time_hi_and_version;
65 uint8_t clock_seq_and_node[8];
66 };
67
68 union uuid_helper_t {
69 struct uuid uuid_struct;
70 struct efi_guid efi_guid;
71 };
72
73 /* XXX namespace pollution? */
74 typedef struct uuid uuid_t;
75
convert_uuid_to_u32_array(const uuid_t uuid,uint32_t out[4])76 static inline void convert_uuid_to_u32_array(const uuid_t uuid, uint32_t out[4])
77 {
78 out[0] = ((uint32_t)uuid.time_low[0]) |
79 ((uint32_t)uuid.time_low[1] << 8) |
80 ((uint32_t)uuid.time_low[2] << 16) |
81 ((uint32_t)uuid.time_low[3] << 24);
82
83 out[1] = ((uint32_t)uuid.time_mid[0]) |
84 ((uint32_t)uuid.time_mid[1] << 8) |
85 ((uint32_t)uuid.time_hi_and_version[0] << 16) |
86 ((uint32_t)uuid.time_hi_and_version[1] << 24);
87
88 out[2] = ((uint32_t)uuid.clock_seq_hi_and_reserved) |
89 ((uint32_t)uuid.clock_seq_low << 8) |
90 ((uint32_t)uuid.node[0] << 16) |
91 ((uint32_t)uuid.node[1] << 24);
92
93 out[3] = ((uint32_t)uuid.node[2]) |
94 ((uint32_t)uuid.node[3] << 8) |
95 ((uint32_t)uuid.node[4] << 16) |
96 ((uint32_t)uuid.node[5] << 24);
97 }
98
99 #endif /* UUID_H */
100