1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* Copyright (c) 1988 AT&T */ 30 /* All Rights Reserved */ 31 32 33 #include "synonyms.h" 34 #include <stdlib.h> 35 #include <string.h> 36 #include <errno.h> 37 38 /* 39 * calloc - allocate and clear memory block 40 */ 41 void * 42 calloc(size_t num, size_t size) 43 { 44 void *mp; 45 size_t total; 46 47 if (num == 0 || size == 0) 48 total = 0; 49 else { 50 total = num * size; 51 52 /* check for overflow */ 53 if (total / num != size) { 54 errno = ENOMEM; 55 return (0); 56 } 57 } 58 return ((mp = malloc(total)) ? memset(mp, 0, total) : mp); 59 } 60