xref: /illumos-gate/usr/src/common/util/memset.c (revision 63360950109af2ce85a962ca61f40b8782f11100)
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 (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 /*
22  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
23  * Use is subject to license terms.
24  */
25 
26 #pragma ident	"%Z%%M%	%I%	%E% SMI"
27 
28 /*	Copyright (c) 1988 AT&T	*/
29 /*	  All Rights Reserved  	*/
30 
31 
32 #if !defined(_KMDB) && !defined(_BOOT) && !defined(_KERNEL)
33 
34 #pragma weak _private_memset = _memset
35 #pragma weak memset = _memset
36 
37 #include "synonyms.h"
38 #endif /* !_KMDB && !_BOOT && !_KERNEL */
39 
40 #include <sys/types.h>
41 
42 #if defined(_KERNEL)
43 #include <sys/systm.h>
44 #elif !defined(_BOOT)
45 #include <string.h>
46 #endif
47 
48 #include "string.h"
49 
50 /*
51  * Set an array of n chars starting at sp to the character c.
52  * Return sp.
53  */
54 void *
55 memset(void *sp1, int c, size_t n)
56 {
57 	if (n != 0) {
58 		unsigned char *sp = sp1;
59 		do {
60 			*sp++ = (unsigned char)c;
61 		} while (--n != 0);
62 	}
63 
64 	return (sp1);
65 }
66