uuid.h revision 1.4 1 1.4 riastrad /* $NetBSD: uuid.h,v 1.4 2021/12/19 11:38:04 riastradh Exp $ */
2 1.2 riastrad
3 1.2 riastrad /*-
4 1.2 riastrad * Copyright (c) 2018 The NetBSD Foundation, Inc.
5 1.2 riastrad * All rights reserved.
6 1.2 riastrad *
7 1.2 riastrad * This code is derived from software contributed to The NetBSD Foundation
8 1.2 riastrad * by Taylor R. Campbell.
9 1.2 riastrad *
10 1.2 riastrad * Redistribution and use in source and binary forms, with or without
11 1.2 riastrad * modification, are permitted provided that the following conditions
12 1.2 riastrad * are met:
13 1.2 riastrad * 1. Redistributions of source code must retain the above copyright
14 1.2 riastrad * notice, this list of conditions and the following disclaimer.
15 1.2 riastrad * 2. Redistributions in binary form must reproduce the above copyright
16 1.2 riastrad * notice, this list of conditions and the following disclaimer in the
17 1.2 riastrad * documentation and/or other materials provided with the distribution.
18 1.2 riastrad *
19 1.2 riastrad * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 1.2 riastrad * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 1.2 riastrad * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 1.2 riastrad * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 1.2 riastrad * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 1.2 riastrad * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 1.2 riastrad * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 1.2 riastrad * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 1.2 riastrad * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 1.2 riastrad * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 1.2 riastrad * POSSIBILITY OF SUCH DAMAGE.
30 1.2 riastrad */
31 1.2 riastrad
32 1.2 riastrad #ifndef _LINUX_UUID_H_
33 1.2 riastrad #define _LINUX_UUID_H_
34 1.2 riastrad
35 1.4 riastrad typedef struct {
36 1.4 riastrad unsigned char guid_bytes[16];
37 1.4 riastrad } guid_t;
38 1.4 riastrad
39 1.4 riastrad #define GUID_INIT(x, y, z, v0, v1, v2, v3, v4, v5, v6, v7) ((guid_t) \
40 1.4 riastrad { \
41 1.4 riastrad .guid_bytes = { \
42 1.4 riastrad [0] = (x) & 0xff, \
43 1.4 riastrad [1] = ((x) >> 8) & 0xff, \
44 1.4 riastrad [2] = ((x) >> 16) & 0xff, \
45 1.4 riastrad [3] = ((x) >> 24) & 0xff, \
46 1.4 riastrad [4] = (y) & 0xff, \
47 1.4 riastrad [5] = ((y) >> 8) & 0xff, \
48 1.4 riastrad [6] = (z) & 0xff, \
49 1.4 riastrad [7] = ((z) >> 8) & 0xff, \
50 1.4 riastrad [8] = (v0), \
51 1.4 riastrad [9] = (v1), \
52 1.4 riastrad [10] = (v2), \
53 1.4 riastrad [11] = (v3), \
54 1.4 riastrad [12] = (v4), \
55 1.4 riastrad [13] = (v5), \
56 1.4 riastrad [14] = (v6), \
57 1.4 riastrad [15] = (v7), \
58 1.4 riastrad } \
59 1.4 riastrad })
60 1.4 riastrad
61 1.2 riastrad #define UUID_STRING_LEN 36
62 1.2 riastrad
63 1.3 riastrad static inline int
64 1.3 riastrad uuid_is_valid(const char uuid[static 36])
65 1.3 riastrad {
66 1.3 riastrad unsigned i;
67 1.3 riastrad
68 1.3 riastrad for (i = 0; i < 36; i++) {
69 1.3 riastrad switch (i) {
70 1.3 riastrad case 8: /* xxxxxxxx[-]xxxx-xxxx-xxxx-xxxxxxxxxxxx */
71 1.3 riastrad case 12 + 1: /* xxxxxxxx-xxxx[-]xxxx-xxxx-xxxxxxxxxxxx */
72 1.3 riastrad case 16 + 2: /* xxxxxxxx-xxxx-xxxx[-]xxxx-xxxxxxxxxxxx */
73 1.3 riastrad case 20 + 3: /* xxxxxxxx-xxxx-xxxx-xxxx[-]xxxxxxxxxxxx */
74 1.3 riastrad if (uuid[i] == '-')
75 1.3 riastrad continue;
76 1.3 riastrad return 0;
77 1.3 riastrad default:
78 1.3 riastrad if ('0' <= uuid[i] && uuid[i] <= '9')
79 1.3 riastrad continue;
80 1.3 riastrad if ('a' <= uuid[i] && uuid[i] <= 'f')
81 1.3 riastrad continue;
82 1.3 riastrad if ('A' <= uuid[i] && uuid[i] <= 'F')
83 1.3 riastrad continue;
84 1.3 riastrad return 0;
85 1.3 riastrad }
86 1.3 riastrad }
87 1.3 riastrad
88 1.3 riastrad return 1;
89 1.3 riastrad }
90 1.3 riastrad
91 1.2 riastrad #endif /* _LINUX_UUID_H_ */
92