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openpam_strlcpy.c revision 1.1.1.1 
      1 /*-
      2  * Copyright (c) 2011-2012 Dag-Erling Smrgrav
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. The name of the author may not be used to endorse or promote
     14  *    products derived from this software without specific prior written
     15  *    permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     27  * SUCH DAMAGE.
     28  *
     29  * Id: openpam_strlcpy.c 648 2013-03-05 17:54:27Z des
     30  */
     31 
     32 #ifdef HAVE_CONFIG_H
     33 # include "config.h"
     34 #endif
     35 
     36 #ifndef HAVE_STRLCPY
     37 
     38 #include <stddef.h>
     39 
     40 #include "openpam_strlcpy.h"
     41 
     42 /* like strcpy(3), but always NUL-terminates; returns strlen(src) */
     43 size_t
     44 openpam_strlcpy(char *dst, const char *src, size_t size)
     45 {
     46 	size_t len;
     47 
     48 	for (len = 0; *src && size > 1; ++len, --size)
     49 		*dst++ = *src++;
     50 	*dst = '\0';
     51 	while (*src)
     52 		++len, ++src;
     53 	return (len);
     54 }
     55 
     56 #endif
     57