strmove.c revision 1219:f89f56c2d9ac 
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, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22
23/*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
24/*	  All Rights Reserved  	*/
25
26/*
27 * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
28 * Use is subject to license terms.
29 */
30
31#pragma ident	"%Z%%M%	%I%	%E% SMI"
32/*LINTLIBRARY*/
33
34#include "c_synonyms.h"
35#include <sys/types.h>
36#include "libmail.h"
37
38/*
39 *  NAME
40 *	strmove - copy a string, permitting overlaps
41 *
42 *  SYNOPSIS
43 *	void strmove(char *to, char *from)
44 *
45 *  DESCRIPTION
46 *	strmove() acts exactly like strcpy() with the additional
47 *	guarantee that it will work with overlapping strings.
48 *	It does it left-to-right, a byte at a time.
49 */
50
51void
52strmove(char *to, char *from)
53{
54	while ((*to++ = *from++) != 0)
55		;
56}
57