xref: /illumos-gate/usr/src/common/util/memset.c (revision 7c478bd95313f5f23a4c958a745db2134aa03244)
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 #if !defined(_KMDB) && !defined(_BOOT) && !defined(_KERNEL)
34 
35 #pragma weak _private_memset = _memset
36 #pragma weak memset = _memset
37 
38 #include "synonyms.h"
39 #endif /* !_KMDB && !_BOOT && !_KERNEL */
40 
41 #include <sys/types.h>
42 
43 #if defined(_KERNEL)
44 #include <sys/systm.h>
45 #else
46 #include <string.h>
47 #endif	/* !_KERNEL */
48 
49 /*
50  * Set an array of n chars starting at sp to the character c.
51  * Return sp.
52  */
53 void *
54 memset(void *sp1, int c, size_t n)
55 {
56 	if (n != 0) {
57 		unsigned char *sp = sp1;
58 		do {
59 			*sp++ = (unsigned char)c;
60 		} while (--n != 0);
61 	}
62 
63 	return (sp1);
64 }
65