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 1987 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27#pragma ident	"%Z%%M%	%I%	%E% SMI"
28
29#include <sys/types.h>
30#include <sys/time.h>
31
32/*
33 * Backwards compatible utime.
34 *
35 * The System V system call allows any user with write permission
36 * on a file to set the accessed and modified times to the current
37 * time; they specify this by passing a null pointer to "utime".
38 * This is done to simulate reading one byte from a file and
39 * overwriting that byte with itself, which is the technique used
40 * by older versions of the "touch" command.  The advantage of this
41 * hack in the system call is that it works correctly even if the file
42 * is zero-length.
43 *
44 * The BSD system call never allowed a null pointer so there should
45 * be no compatibility problem there.
46 */
47
48int
49utime(char *name, time_t otv[2])
50{
51	struct timeval tv[2];
52
53	if (otv == 0) {
54		return (utimes(name, (struct timeval *)0));
55	} else {
56		tv[0].tv_sec = (long)otv[0];
57		tv[0].tv_usec = 0;
58		tv[1].tv_sec = (long)otv[1];
59		tv[1].tv_usec = 0;
60	}
61	return (utimes(name, tv));
62}
63