1 /*- 2 * Copyright (c) 2002,2005 Marcel Moolenaar 3 * Copyright (c) 2002 Hiten Mahesh Pandya 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 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 AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 */ 29 30 #include <string.h> 31 #include <uuid.h> 32 33 /* 34 * uuid_equal() - compare for equality. 35 * See also: 36 * http://www.opengroup.org/onlinepubs/009629399/uuid_equal.htm 37 */ 38 int32_t 39 uuid_equal(const uuid_t *a, const uuid_t *b, uint32_t *status) 40 { 41 42 if (status != NULL) 43 *status = uuid_s_ok; 44 45 /* Deal with equal or NULL pointers. */ 46 if (a == b) 47 return (1); 48 if (a == NULL) 49 return (uuid_is_nil(b, NULL)); 50 if (b == NULL) 51 return (uuid_is_nil(a, NULL)); 52 53 /* Do a byte for byte comparison. */ 54 return ((memcmp(a, b, sizeof(uuid_t))) ? 0 : 1); 55 } 56