uuid_equal.c revision 139601
1106184Smarcel/*- 2139601Smarcel * Copyright (c) 2002,2005 Marcel Moolenaar 3106184Smarcel * Copyright (c) 2002 Hiten Mahesh Pandya 4106184Smarcel * All rights reserved. 5106184Smarcel * 6106184Smarcel * Redistribution and use in source and binary forms, with or without 7106184Smarcel * modification, are permitted provided that the following conditions 8106184Smarcel * are met: 9106184Smarcel * 1. Redistributions of source code must retain the above copyright 10106184Smarcel * notice, this list of conditions and the following disclaimer. 11106184Smarcel * 2. Redistributions in binary form must reproduce the above copyright 12106184Smarcel * notice, this list of conditions and the following disclaimer in the 13106184Smarcel * documentation and/or other materials provided with the distribution. 14106184Smarcel * 15106184Smarcel * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16106184Smarcel * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17106184Smarcel * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18106184Smarcel * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19106184Smarcel * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20106184Smarcel * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21106184Smarcel * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22106184Smarcel * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23106184Smarcel * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24106184Smarcel * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25106184Smarcel * SUCH DAMAGE. 26106184Smarcel * 27106184Smarcel * $FreeBSD: head/lib/libc/uuid/uuid_equal.c 139601 2005-01-03 02:56:15Z marcel $ 28106184Smarcel */ 29106184Smarcel 30106184Smarcel#include <string.h> 31106184Smarcel#include <uuid.h> 32106184Smarcel 33106184Smarcel/* 34106184Smarcel * uuid_equal() - compare for equality. 35106184Smarcel * See also: 36106184Smarcel * http://www.opengroup.org/onlinepubs/009629399/uuid_equal.htm 37106184Smarcel */ 38106184Smarcelint32_t 39139601Smarceluuid_equal(const uuid_t *a, const uuid_t *b, uint32_t *status) 40106184Smarcel{ 41106184Smarcel 42106184Smarcel if (status != NULL) 43106184Smarcel *status = uuid_s_ok; 44106184Smarcel 45106184Smarcel /* Deal with equal or NULL pointers. */ 46106184Smarcel if (a == b) 47106184Smarcel return (1); 48106184Smarcel if (a == NULL) 49106184Smarcel return (uuid_is_nil(b, NULL)); 50106184Smarcel if (b == NULL) 51106184Smarcel return (uuid_is_nil(a, NULL)); 52106184Smarcel 53106184Smarcel /* Do a byte for byte comparison. */ 54106184Smarcel return ((memcmp(a, b, sizeof(uuid_t))) ? 0 : 1); 55106184Smarcel} 56