1241675Suqs#include "config.h" 2241675Suqs 3275432Sbapt#if HAVE_STRLCAT 4241675Suqs 5241675Suqsint dummy; 6241675Suqs 7241675Suqs#else 8241675Suqs 9241675Suqs/* $OpenBSD: strlcat.c,v 1.13 2005/08/08 08:05:37 espie Exp $ */ 10241675Suqs 11241675Suqs/* 12241675Suqs * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com> 13241675Suqs * 14241675Suqs * Permission to use, copy, modify, and distribute this software for any 15241675Suqs * purpose with or without fee is hereby granted, provided that the above 16241675Suqs * copyright notice and this permission notice appear in all copies. 17241675Suqs * 18241675Suqs * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 19241675Suqs * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 20241675Suqs * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 21241675Suqs * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 22241675Suqs * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 23241675Suqs * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 24241675Suqs * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 25241675Suqs */ 26241675Suqs 27241675Suqs#include <sys/types.h> 28241675Suqs#include <string.h> 29241675Suqs 30241675Suqs/* 31241675Suqs * Appends src to string dst of size siz (unlike strncat, siz is the 32241675Suqs * full size of dst, not space left). At most siz-1 characters 33241675Suqs * will be copied. Always NUL terminates (unless siz <= strlen(dst)). 34241675Suqs * Returns strlen(src) + MIN(siz, strlen(initial dst)). 35241675Suqs * If retval >= siz, truncation occurred. 36241675Suqs */ 37241675Suqssize_t 38241675Suqsstrlcat(char *dst, const char *src, size_t siz) 39241675Suqs{ 40241675Suqs char *d = dst; 41241675Suqs const char *s = src; 42241675Suqs size_t n = siz; 43241675Suqs size_t dlen; 44241675Suqs 45241675Suqs /* Find the end of dst and adjust bytes left but don't go past end */ 46241675Suqs while (n-- != 0 && *d != '\0') 47241675Suqs d++; 48241675Suqs dlen = d - dst; 49241675Suqs n = siz - dlen; 50241675Suqs 51241675Suqs if (n == 0) 52241675Suqs return(dlen + strlen(s)); 53241675Suqs while (*s != '\0') { 54241675Suqs if (n != 1) { 55241675Suqs *d++ = *s; 56241675Suqs n--; 57241675Suqs } 58241675Suqs s++; 59241675Suqs } 60241675Suqs *d = '\0'; 61241675Suqs 62241675Suqs return(dlen + (s - src)); /* count does not include NUL */ 63241675Suqs} 64241675Suqs 65241675Suqs#endif 66