10Sstevel@tonic-gate /*
20Sstevel@tonic-gate * CDDL HEADER START
30Sstevel@tonic-gate *
40Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*6812Sraf * Common Development and Distribution License (the "License").
6*6812Sraf * You may not use this file except in compliance with the License.
70Sstevel@tonic-gate *
80Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
90Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
100Sstevel@tonic-gate * See the License for the specific language governing permissions
110Sstevel@tonic-gate * and limitations under the License.
120Sstevel@tonic-gate *
130Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
140Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
150Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
160Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
170Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
180Sstevel@tonic-gate *
190Sstevel@tonic-gate * CDDL HEADER END
200Sstevel@tonic-gate */
21*6812Sraf
220Sstevel@tonic-gate /*
23*6812Sraf * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
240Sstevel@tonic-gate * Use is subject to license terms.
250Sstevel@tonic-gate */
260Sstevel@tonic-gate
270Sstevel@tonic-gate /* Copyright (c) 1988 AT&T */
280Sstevel@tonic-gate /* All Rights Reserved */
290Sstevel@tonic-gate
30*6812Sraf #pragma ident "%Z%%M% %I% %E% SMI"
310Sstevel@tonic-gate
32*6812Sraf #include "lint.h"
330Sstevel@tonic-gate #include <stdlib.h>
340Sstevel@tonic-gate #include <string.h>
350Sstevel@tonic-gate #include <errno.h>
360Sstevel@tonic-gate
370Sstevel@tonic-gate /*
380Sstevel@tonic-gate * calloc - allocate and clear memory block
390Sstevel@tonic-gate */
400Sstevel@tonic-gate void *
calloc(size_t num,size_t size)410Sstevel@tonic-gate calloc(size_t num, size_t size)
420Sstevel@tonic-gate {
430Sstevel@tonic-gate void *mp;
440Sstevel@tonic-gate size_t total;
450Sstevel@tonic-gate
460Sstevel@tonic-gate if (num == 0 || size == 0)
470Sstevel@tonic-gate total = 0;
480Sstevel@tonic-gate else {
490Sstevel@tonic-gate total = num * size;
500Sstevel@tonic-gate
510Sstevel@tonic-gate /* check for overflow */
520Sstevel@tonic-gate if (total / num != size) {
53*6812Sraf errno = ENOMEM;
54*6812Sraf return (0);
550Sstevel@tonic-gate }
560Sstevel@tonic-gate }
570Sstevel@tonic-gate return ((mp = malloc(total)) ? memset(mp, 0, total) : mp);
580Sstevel@tonic-gate }
59