1240075Sdes/* $OpenBSD: strlcpy.c,v 1.11 2006/05/05 15:27:38 millert Exp $ */ 2126274Sdes 398937Sdes/* 498937Sdes * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com> 598937Sdes * 6124208Sdes * Permission to use, copy, modify, and distribute this software for any 7124208Sdes * purpose with or without fee is hereby granted, provided that the above 8124208Sdes * copyright notice and this permission notice appear in all copies. 998937Sdes * 10124208Sdes * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11124208Sdes * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12124208Sdes * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13124208Sdes * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14124208Sdes * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15124208Sdes * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16124208Sdes * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 1798937Sdes */ 1898937Sdes 19157016Sdes/* OPENBSD ORIGINAL: lib/libc/string/strlcpy.c */ 20157016Sdes 21106121Sdes#include "includes.h" 2298937Sdes#ifndef HAVE_STRLCPY 2398937Sdes 2498937Sdes#include <sys/types.h> 2598937Sdes#include <string.h> 2698937Sdes 2798937Sdes/* 2898937Sdes * Copy src to string dst of size siz. At most siz-1 characters 2998937Sdes * will be copied. Always NUL terminates (unless siz == 0). 3098937Sdes * Returns strlen(src); if retval >= siz, truncation occurred. 3198937Sdes */ 3298937Sdessize_t 33124208Sdesstrlcpy(char *dst, const char *src, size_t siz) 3498937Sdes{ 35157016Sdes char *d = dst; 36157016Sdes const char *s = src; 37157016Sdes size_t n = siz; 3898937Sdes 3998937Sdes /* Copy as many bytes as will fit */ 40240075Sdes if (n != 0) { 41240075Sdes while (--n != 0) { 42240075Sdes if ((*d++ = *s++) == '\0') 4398937Sdes break; 44240075Sdes } 4598937Sdes } 4698937Sdes 4798937Sdes /* Not enough room in dst, add NUL and traverse rest of src */ 4898937Sdes if (n == 0) { 4998937Sdes if (siz != 0) 5098937Sdes *d = '\0'; /* NUL-terminate dst */ 5198937Sdes while (*s++) 5298937Sdes ; 5398937Sdes } 5498937Sdes 5598937Sdes return(s - src - 1); /* count does not include NUL */ 5698937Sdes} 5798937Sdes 5898937Sdes#endif /* !HAVE_STRLCPY */ 59