1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27/*	Copyright (c) 1988 AT&T	*/
28/*	  All Rights Reserved  	*/
29
30#pragma ident	"%Z%%M%	%I%	%E% SMI"
31
32#include "lint.h"
33#include <string.h>
34#include <sys/types.h>
35
36/*
37 * Concatenate s2 on the end of s1.  S1's space must be large enough.
38 * At most n characters are moved.
39 * Return s1.
40 */
41char *
42strncat(char *s1, const char *s2, size_t n)
43{
44	char *os1 = s1;
45
46	n++;
47	while (*s1++)
48		;
49	--s1;
50	while (*s1++ = *s2++)
51		if (--n == 0) {
52			s1[-1] = '\0';
53			break;
54		}
55	return (os1);
56}
57