xref: /illumos-gate/usr/src/lib/libc/port/gen/strdup.c (revision 7c478bd9)
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 #pragma weak strdup = _strdup
34 
35 #include "synonyms.h"
36 #include <string.h>
37 #include <stdlib.h>
38 #include <sys/types.h>
39 
40 /*
41  * string duplication
42  * returns pointer to a new string which is the duplicate of string
43  * pointed to by s1
44  * NULL is returned if new string can't be created
45  */
46 char *
47 strdup(const char *s1)
48 {
49 	char *s2 = malloc(strlen(s1) + 1);
50 
51 	if (s2)
52 		(void) strcpy(s2, s1);
53 	return (s2);
54 }
55