1 /* $NetBSD: openpam_strlcpy.c,v 1.4 2023/06/30 21:46:21 christos Exp $ */
2
3 /*-
4 * Copyright (c) 2011-2012 Dag-Erling Smørgrav
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote
16 * products derived from this software without specific prior written
17 * permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #ifdef HAVE_CONFIG_H
33 # include "config.h"
34 #endif
35
36 #include <sys/cdefs.h>
37 __RCSID("$NetBSD: openpam_strlcpy.c,v 1.4 2023/06/30 21:46:21 christos Exp $");
38
39 #ifndef HAVE_STRLCPY
40
41 #include <stddef.h>
42
43 #include "openpam_strlcpy.h"
44
45 /* like strcpy(3), but always NUL-terminates; returns strlen(src) */
46 size_t
openpam_strlcpy(char * dst,const char * src,size_t size)47 openpam_strlcpy(char *dst, const char *src, size_t size)
48 {
49 size_t len;
50
51 for (len = 0; *src && size > 1; ++len, --size)
52 *dst++ = *src++;
53 *dst = '\0';
54 while (*src)
55 ++len, ++src;
56 return (len);
57 }
58
59 #endif
60