1 /* $NetBSD: uuid_equal.c,v 1.2 2008/04/23 07:52:32 plunky 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_equal.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_equal.c,v 1.2 2008/04/23 07:52:32 plunky Exp $"); 35 #endif 36 37 #include "namespace.h" 38 39 #include <string.h> 40 #include <uuid.h> 41 42 /* 43 * uuid_equal() - compare for equality. 44 * See also: 45 * http://www.opengroup.org/onlinepubs/009629399/uuid_equal.htm 46 */ 47 int32_t 48 uuid_equal(const uuid_t *a, const uuid_t *b, uint32_t *status) 49 { 50 51 if (status != NULL) 52 *status = uuid_s_ok; 53 54 /* Deal with equal or NULL pointers. */ 55 if (a == b) 56 return (1); 57 if (a == NULL) 58 return (uuid_is_nil(b, NULL)); 59 if (b == NULL) 60 return (uuid_is_nil(a, NULL)); 61 62 /* Do a byte for byte comparison. */ 63 return ((memcmp(a, b, sizeof(uuid_t))) ? 0 : 1); 64 } 65