1#ifdef HAVE_CONFIG_H 2#include "config.h" 3#endif 4 5#ifdef HAVE_STRLCPY 6 7int dummy; 8 9#else 10 11/* $OpenBSD: strlcpy.c,v 1.11 2006/05/05 15:27:38 millert Exp $ */ 12 13/* 14 * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com> 15 * 16 * Permission to use, copy, modify, and distribute this software for any 17 * purpose with or without fee is hereby granted, provided that the above 18 * copyright notice and this permission notice appear in all copies. 19 * 20 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 21 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 22 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 23 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 24 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 25 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 26 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 27 */ 28 29#include <sys/types.h> 30#include <string.h> 31 32/* 33 * Copy src to string dst of size siz. At most siz-1 characters 34 * will be copied. Always NUL terminates (unless siz == 0). 35 * Returns strlen(src); if retval >= siz, truncation occurred. 36 */ 37size_t 38strlcpy(char *dst, const char *src, size_t siz) 39{ 40 char *d = dst; 41 const char *s = src; 42 size_t n = siz; 43 44 /* Copy as many bytes as will fit */ 45 if (n != 0) { 46 while (--n != 0) { 47 if ((*d++ = *s++) == '\0') 48 break; 49 } 50 } 51 52 /* Not enough room in dst, add NUL and traverse rest of src */ 53 if (n == 0) { 54 if (siz != 0) 55 *d = '\0'; /* NUL-terminate dst */ 56 while (*s++) 57 ; 58 } 59 60 return(s - src - 1); /* count does not include NUL */ 61} 62 63#endif 64