17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate * CDDL HEADER START
37c478bd9Sstevel@tonic-gate *
47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the
51d530678Sraf * Common Development and Distribution License (the "License").
61d530678Sraf * You may not use this file except in compliance with the License.
77c478bd9Sstevel@tonic-gate *
87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions
117c478bd9Sstevel@tonic-gate * and limitations under the License.
127c478bd9Sstevel@tonic-gate *
137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
187c478bd9Sstevel@tonic-gate *
197c478bd9Sstevel@tonic-gate * CDDL HEADER END
207c478bd9Sstevel@tonic-gate */
211d530678Sraf
227c478bd9Sstevel@tonic-gate /*
237257d1b4Sraf * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
247c478bd9Sstevel@tonic-gate * Use is subject to license terms.
257c478bd9Sstevel@tonic-gate */
267c478bd9Sstevel@tonic-gate
277c478bd9Sstevel@tonic-gate #include <stdlib.h>
287c478bd9Sstevel@tonic-gate #include <string.h>
29*31c6d826SRichard Lowe #include <errno.h>
30*31c6d826SRichard Lowe
317c478bd9Sstevel@tonic-gate /*
327c478bd9Sstevel@tonic-gate * calloc - allocate and clear memory block
337c478bd9Sstevel@tonic-gate */
347c478bd9Sstevel@tonic-gate
357c478bd9Sstevel@tonic-gate void *
calloc(size_t num,size_t size)367c478bd9Sstevel@tonic-gate calloc(size_t num, size_t size)
377c478bd9Sstevel@tonic-gate {
387c478bd9Sstevel@tonic-gate void *mp;
39*31c6d826SRichard Lowe size_t total;
407c478bd9Sstevel@tonic-gate
41*31c6d826SRichard Lowe if (num == 0 || size == 0) {
42*31c6d826SRichard Lowe total = 0;
43*31c6d826SRichard Lowe } else {
44*31c6d826SRichard Lowe total = num * size;
45*31c6d826SRichard Lowe
46*31c6d826SRichard Lowe /* check for overflow */
47*31c6d826SRichard Lowe if ((total / num) != size) {
48*31c6d826SRichard Lowe errno = ENOMEM;
49*31c6d826SRichard Lowe return (NULL);
50*31c6d826SRichard Lowe }
51*31c6d826SRichard Lowe }
52*31c6d826SRichard Lowe
53*31c6d826SRichard Lowe mp = malloc(total);
547c478bd9Sstevel@tonic-gate if (mp == NULL)
557c478bd9Sstevel@tonic-gate return (NULL);
56*31c6d826SRichard Lowe (void) memset(mp, 0, total);
577c478bd9Sstevel@tonic-gate return (mp);
587c478bd9Sstevel@tonic-gate }
597c478bd9Sstevel@tonic-gate
607c478bd9Sstevel@tonic-gate /*ARGSUSED*/
617c478bd9Sstevel@tonic-gate void
cfree(void * p,size_t num,size_t size)627c478bd9Sstevel@tonic-gate cfree(void *p, size_t num, size_t size)
637c478bd9Sstevel@tonic-gate {
647c478bd9Sstevel@tonic-gate free(p);
657c478bd9Sstevel@tonic-gate }
66