Home | History | Annotate | Download | only in util
      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 *
     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