1 /* $NetBSD: uuid_create.c,v 1.1 2004/09/13 21:44:54 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 2002 Marcel Moolenaar
5 * Copyright (c) 2002 Hiten Mahesh Pandya
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD: src/lib/libc/uuid/uuid_create.c,v 1.2 2003/08/08 19:18:43 marcel Exp $
30 */
31
32 #include <sys/cdefs.h>
33 #if defined(LIBC_SCCS) && !defined(lint)
34 __RCSID("$NetBSD: uuid_create.c,v 1.1 2004/09/13 21:44:54 thorpej Exp $");
35 #endif
36
37 #include "namespace.h"
38
39 #include <uuid.h>
40
41 #if defined(__minix)
42 #include <paths.h>
43 #include <fcntl.h>
44 #include <unistd.h>
45
46 /* Fake a uuidgen() syscall */
uuidgen(struct uuid * store,int count)47 int uuidgen(struct uuid *store, int count)
48 {
49 int rfd;
50
51 if((rfd = open(_PATH_RANDOM, O_RDONLY)) < 0) {
52 return -1;
53 }
54
55 while(count--) {
56 if(read(rfd, store++, sizeof(*store)) < sizeof(*store)) {
57 close(rfd);
58 return -1;
59 }
60 }
61
62 close(rfd);
63
64 return 0;
65 }
66 #endif /* defined(__minix) */
67
68 /*
69 * uuid_create() - create an UUID.
70 * See also:
71 * http://www.opengroup.org/onlinepubs/009629399/uuid_create.htm
72 */
73 void
uuid_create(uuid_t * u,uint32_t * status)74 uuid_create(uuid_t *u, uint32_t *status)
75 {
76 uint32_t s;
77
78 if (uuidgen(u, 1) == -1)
79 s = uuid_s_no_memory; /* XXX */
80 else
81 s = uuid_s_ok;
82
83 if (status)
84 *status = s;
85 }
86