openpam_strlcat.h revision 236099
1236099Sdes/*- 2236099Sdes * Copyright (c) 2011 Dag-Erling Sm��rgrav 3236099Sdes * All rights reserved. 4236099Sdes * 5236099Sdes * Redistribution and use in source and binary forms, with or without 6236099Sdes * modification, are permitted provided that the following conditions 7236099Sdes * are met: 8236099Sdes * 1. Redistributions of source code must retain the above copyright 9236099Sdes * notice, this list of conditions and the following disclaimer 10236099Sdes * in this position and unchanged. 11236099Sdes * 2. Redistributions in binary form must reproduce the above copyright 12236099Sdes * notice, this list of conditions and the following disclaimer in the 13236099Sdes * documentation and/or other materials provided with the distribution. 14236099Sdes * 3. The name of the author may not be used to endorse or promote 15236099Sdes * products derived from this software without specific prior written 16236099Sdes * permission. 17236099Sdes * 18236099Sdes * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19236099Sdes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20236099Sdes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21236099Sdes * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22236099Sdes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23236099Sdes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24236099Sdes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25236099Sdes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26236099Sdes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27236099Sdes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28236099Sdes * SUCH DAMAGE. 29236099Sdes * 30236099Sdes * $Id: openpam_strlcat.h 578 2012-04-06 00:45:59Z des $ 31236099Sdes */ 32236099Sdes 33236099Sdes#ifndef OPENPAM_STRLCAT_H_INCLUDED 34236099Sdes#define OPENPAM_STRLCAT_H_INCLUDED 35236099Sdes 36236099Sdes#ifndef HAVE_STRLCAT 37236099Sdes/* like strcat(3), but always NUL-terminates; returns strlen(src) */ 38236099Sdesstatic size_t 39236099Sdesstrlcat(char *dst, const char *src, size_t size) 40236099Sdes{ 41236099Sdes size_t len; 42236099Sdes 43236099Sdes for (len = 0; *dst && size > 1; ++len, --size) 44236099Sdes dst++; 45236099Sdes for (; *src && size > 1; ++len, --size) 46236099Sdes *dst++ = *src++; 47236099Sdes *dst = '\0'; 48236099Sdes while (*src) 49236099Sdes ++len, ++src; 50236099Sdes return (len); 51236099Sdes} 52236099Sdes#endif 53236099Sdes 54236099Sdes#endif 55