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 /*
23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /* Copyright (c) 1988 AT&T */
28 /* All Rights Reserved */
29
30 #pragma ident "%Z%%M% %I% %E% SMI"
31
32 #ifndef _KMDB
33 #pragma weak _memccpy = memccpy
34
35 #include "lint.h"
36 #endif /* !_KMDB */
37 #include <sys/types.h>
38 #include <string.h>
39 #include <stddef.h>
40 #include <memory.h>
41
42 /*
43 * Copy s0 to s, stopping if character c is copied. Copy no more than n bytes.
44 * Return a pointer to the byte after character c in the copy,
45 * or NULL if c is not found in the first n bytes.
46 */
47 void *
memccpy(void * s,const void * s0,int c,size_t n)48 memccpy(void *s, const void *s0, int c, size_t n)
49 {
50 if (n != 0) {
51 unsigned char *s1 = s;
52 const unsigned char *s2 = s0;
53 do {
54 if ((*s1++ = *s2++) == (unsigned char)c)
55 return (s1);
56 } while (--n != 0);
57 }
58 return (NULL);
59 }
60