1178476Sjb/*	$OpenBSD: uuid_equal.c,v 1.2 2015/09/10 18:13:46 guenther Exp $	*/
2178476Sjb/*	$NetBSD: uuid_equal.c,v 1.2 2008/04/23 07:52:32 plunky Exp $	*/
3178476Sjb
4178476Sjb/*
5178476Sjb * Copyright (c) 2002 Marcel Moolenaar
6178476Sjb * Copyright (c) 2002 Hiten Mahesh Pandya
7178476Sjb * All rights reserved.
8178476Sjb *
9178476Sjb * Redistribution and use in source and binary forms, with or without
10178476Sjb * modification, are permitted provided that the following conditions
11178476Sjb * are met:
12178476Sjb * 1. Redistributions of source code must retain the above copyright
13178476Sjb *    notice, this list of conditions and the following disclaimer.
14178476Sjb * 2. Redistributions in binary form must reproduce the above copyright
15178476Sjb *    notice, this list of conditions and the following disclaimer in the
16178476Sjb *    documentation and/or other materials provided with the distribution.
17178476Sjb *
18178476Sjb * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19178476Sjb * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20178476Sjb * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21178476Sjb * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22178476Sjb * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23178476Sjb * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24178476Sjb * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25178476Sjb * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26178476Sjb * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27178476Sjb * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28178476Sjb * SUCH DAMAGE.
29178476Sjb *
30178476Sjb * $FreeBSD: src/lib/libc/uuid/uuid_equal.c,v 1.2 2003/08/08 19:18:43 marcel Exp $
31178476Sjb */
32178476Sjb
33178476Sjb#include <string.h>
34178476Sjb#include <uuid.h>
35178476Sjb
36178476Sjb/*
37178476Sjb * uuid_equal() - compare for equality.
38178476Sjb * See also:
39178476Sjb *	http://www.opengroup.org/onlinepubs/009629399/uuid_equal.htm
40178476Sjb */
41178476Sjbint32_t
42178476Sjbuuid_equal(const uuid_t *a, const uuid_t *b, uint32_t *status)
43178476Sjb{
44178476Sjb	if (status != NULL)
45178476Sjb		*status = uuid_s_ok;
46178476Sjb
47178476Sjb	/* Deal with equal or NULL pointers. */
48178476Sjb	if (a == b)
49178476Sjb		return (1);
50178476Sjb	if (a == NULL)
51178476Sjb		return (uuid_is_nil(b, NULL));
52178476Sjb	if (b == NULL)
53178476Sjb		return (uuid_is_nil(a, NULL));
54178476Sjb
55178476Sjb	/* Do a byte for byte comparison. */
56	return ((memcmp(a, b, sizeof(uuid_t))) ? 0 : 1);
57}
58