xref: /illumos-gate/usr/src/boot/lib/libstand/strdup.c (revision 1974da4b)
1199767f8SToomas Soome /*
2199767f8SToomas Soome  * Copyright (c) 1988, 1993
3199767f8SToomas Soome  *	The Regents of the University of California.  All rights reserved.
4199767f8SToomas Soome  *
5199767f8SToomas Soome  * Redistribution and use in source and binary forms, with or without
6199767f8SToomas Soome  * modification, are permitted provided that the following conditions
7199767f8SToomas Soome  * are met:
8199767f8SToomas Soome  * 1. Redistributions of source code must retain the above copyright
9199767f8SToomas Soome  *    notice, this list of conditions and the following disclaimer.
10199767f8SToomas Soome  * 2. Redistributions in binary form must reproduce the above copyright
11199767f8SToomas Soome  *    notice, this list of conditions and the following disclaimer in the
12199767f8SToomas Soome  *    documentation and/or other materials provided with the distribution.
13*1974da4bSToomas Soome  * 3. Neither the name of the University nor the names of its contributors
14199767f8SToomas Soome  *    may be used to endorse or promote products derived from this software
15199767f8SToomas Soome  *    without specific prior written permission.
16199767f8SToomas Soome  *
17199767f8SToomas Soome  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18199767f8SToomas Soome  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19199767f8SToomas Soome  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20199767f8SToomas Soome  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21199767f8SToomas Soome  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22199767f8SToomas Soome  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23199767f8SToomas Soome  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24199767f8SToomas Soome  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25199767f8SToomas Soome  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26199767f8SToomas Soome  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27199767f8SToomas Soome  * SUCH DAMAGE.
28199767f8SToomas Soome  */
29199767f8SToomas Soome 
30199767f8SToomas Soome #include <sys/cdefs.h>
31199767f8SToomas Soome 
32199767f8SToomas Soome #include "stand.h"
33199767f8SToomas Soome #include <stddef.h>
34199767f8SToomas Soome #include <string.h>
35199767f8SToomas Soome 
36199767f8SToomas Soome char *
strdup(const char * str)370384eafeSToomas Soome strdup(const char *str)
38199767f8SToomas Soome {
39199767f8SToomas Soome 	size_t len;
40199767f8SToomas Soome 	char *copy = NULL;
41199767f8SToomas Soome 
42199767f8SToomas Soome 	if (str != NULL) {
430384eafeSToomas Soome 		len = strlen(str) + 1;
440384eafeSToomas Soome 		if ((copy = malloc(len)) == NULL)
450384eafeSToomas Soome 			return (NULL);
460384eafeSToomas Soome 		memcpy(copy, str, len);
47199767f8SToomas Soome 	}
48199767f8SToomas Soome 	return (copy);
49199767f8SToomas Soome }
50