1*05798115SSascha Wildner /*-
2*05798115SSascha Wildner * Copyright (c) 1990, 1993
3*05798115SSascha Wildner * The Regents of the University of California. All rights reserved.
4*05798115SSascha Wildner *
5*05798115SSascha Wildner * This code is derived from software contributed to Berkeley by
6*05798115SSascha Wildner * Chris Torek.
7*05798115SSascha Wildner *
8*05798115SSascha Wildner * Redistribution and use in source and binary forms, with or without
9*05798115SSascha Wildner * modification, are permitted provided that the following conditions
10*05798115SSascha Wildner * are met:
11*05798115SSascha Wildner * 1. Redistributions of source code must retain the above copyright
12*05798115SSascha Wildner * notice, this list of conditions and the following disclaimer.
13*05798115SSascha Wildner * 2. Redistributions in binary form must reproduce the above copyright
14*05798115SSascha Wildner * notice, this list of conditions and the following disclaimer in the
15*05798115SSascha Wildner * documentation and/or other materials provided with the distribution.
16*05798115SSascha Wildner * 3. Neither the name of the University nor the names of its contributors
17*05798115SSascha Wildner * may be used to endorse or promote products derived from this software
18*05798115SSascha Wildner * without specific prior written permission.
19*05798115SSascha Wildner *
20*05798115SSascha Wildner * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21*05798115SSascha Wildner * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22*05798115SSascha Wildner * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23*05798115SSascha Wildner * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24*05798115SSascha Wildner * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25*05798115SSascha Wildner * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26*05798115SSascha Wildner * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27*05798115SSascha Wildner * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28*05798115SSascha Wildner * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29*05798115SSascha Wildner * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30*05798115SSascha Wildner * SUCH DAMAGE.
31*05798115SSascha Wildner *
32*05798115SSascha Wildner * @(#)strncat.c 8.1 (Berkeley) 6/4/93
33*05798115SSascha Wildner * $FreeBSD: src/lib/libc/string/strncat.c,v 1.7 2007/01/09 00:28:12 imp Exp $
34*05798115SSascha Wildner */
35*05798115SSascha Wildner
36*05798115SSascha Wildner #include <sys/types.h>
37*05798115SSascha Wildner #include <sys/libkern.h>
38*05798115SSascha Wildner
39*05798115SSascha Wildner /*
40*05798115SSascha Wildner * Concatenate src on the end of dst. At most strlen(dst)+n+1 bytes
41*05798115SSascha Wildner * are written at dst (at most n+1 bytes being appended). Return dst.
42*05798115SSascha Wildner */
43*05798115SSascha Wildner char *
strncat(char * __restrict dst,const char * __restrict src,size_t n)44*05798115SSascha Wildner strncat(char * __restrict dst, const char * __restrict src, size_t n)
45*05798115SSascha Wildner {
46*05798115SSascha Wildner if (n != 0) {
47*05798115SSascha Wildner char *d = dst;
48*05798115SSascha Wildner const char *s = src;
49*05798115SSascha Wildner
50*05798115SSascha Wildner while (*d != 0)
51*05798115SSascha Wildner d++;
52*05798115SSascha Wildner do {
53*05798115SSascha Wildner if ((*d = *s++) == 0)
54*05798115SSascha Wildner break;
55*05798115SSascha Wildner d++;
56*05798115SSascha Wildner } while (--n != 0);
57*05798115SSascha Wildner *d = 0;
58*05798115SSascha Wildner }
59*05798115SSascha Wildner return (dst);
60*05798115SSascha Wildner }
61