xref: /illumos-gate/usr/src/ucblib/libucb/port/sys/gettimeofday.c (revision 7c478bd95313f5f23a4c958a745db2134aa03244)
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 2004 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
28 /*	  All Rights Reserved  	*/
29 
30 
31 #pragma ident	"%Z%%M%	%I%	%E% SMI"
32 
33 /*LINTLIBRARY*/
34 
35 #include <sys/types.h>
36 #include <sys/time.h>
37 #include <stdio.h>
38 #include <unistd.h>
39 #include <errno.h>
40 #include <sys/syscall.h>
41 #include "libc.h"
42 
43 /*
44  * Get the time of day information.
45  * BSD compatibility on top of SVr4 facilities:
46  * u_sec always zero, and don't do anything with timezone pointer.
47  */
48 
49 /*
50  * This is defined in sys/gettimeofday.s
51  * This extern cannot be in libc.h due to name conflict with port/gen/synonyms.h
52  */
53 extern int _gettimeofday(struct timeval *);
54 
55 /*ARGSUSED*/
56 int
57 gettimeofday(struct timeval *tp, void *tzp)
58 {
59 	if (tp == NULL)
60 		return (0);
61 
62 	return (_gettimeofday(tp));
63 }
64 
65 /*
66  * Set the time.
67  * Don't do anything with the timezone information.
68  */
69 
70 /*ARGSUSED*/
71 int
72 settimeofday(struct timeval *tp, void *tzp)
73 {
74 	time_t t;		/* time in seconds */
75 
76 	if (tp == NULL)
77 		return (0);
78 
79 	t = (time_t) tp->tv_sec;
80 	if (tp->tv_usec >= 500000)
81 		/* round up */
82 		t++;
83 
84 	return (stime(&t));
85 }
86