xref: /freebsd/sys/contrib/openzfs/lib/libspl/strlcpy.c (revision dd41de95a84d979615a2ef11df6850622bf6184e)
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 #ifndef HAVE_STRLCPY
28 
29 #include <string.h>
30 #include <sys/types.h>
31 
32 /*
33  * Copies src to the dstsize buffer at dst. The copy will never
34  * overflow the destination buffer and the buffer will always be null
35  * terminated.
36  */
37 
38 size_t
39 strlcpy(char *dst, const char *src, size_t len)
40 {
41 	size_t slen = strlen(src);
42 	size_t copied;
43 
44 	if (len == 0)
45 		return (slen);
46 
47 	if (slen >= len)
48 		copied = len - 1;
49 	else
50 		copied = slen;
51 	(void) memcpy(dst, src, copied);
52 	dst[copied] = '\0';
53 	return (slen);
54 }
55 
56 #endif /* HAVE_STRLCPY */
57