1 /* $NetBSD: openpam_strlset.c,v 1.3 2017/05/06 19:50:09 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2014 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 * $OpenPAM: openpam_strlset.c 938 2017-04-30 21:34:42Z des $ 32 */ 33 34 #ifdef HAVE_CONFIG_H 35 # include "config.h" 36 #endif 37 38 #include <sys/cdefs.h> 39 __RCSID("$NetBSD: openpam_strlset.c,v 1.3 2017/05/06 19:50:09 christos Exp $"); 40 41 #ifndef HAVE_STRLSET 42 43 #include <stddef.h> 44 45 #include "openpam_strlset.h" 46 47 /* 48 * like memset(3), but stops at the first NUL byte and NUL-terminates the 49 * result. Returns the number of bytes that were written, not including 50 * the terminating NUL. 51 */ 52 size_t 53 openpam_strlset(char *str, int ch, size_t size) 54 { 55 size_t len; 56 57 for (len = 0; *str && size > 1; ++len, --size) 58 *str++ = (char)ch; 59 *str = '\0'; 60 return (++len); 61 } 62 63 #endif 64