xref: /illumos-gate/usr/src/uts/common/syscall/time.c (revision e7cbe64f7a72dae5cb44f100db60ca88f3313c65)
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 1994-2003 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 #include <sys/param.h>
34 #include <sys/types.h>
35 #include <sys/sysmacros.h>
36 #include <sys/systm.h>
37 #include <sys/tuneable.h>
38 #include <sys/errno.h>
39 #include <sys/proc.h>
40 #include <sys/time.h>
41 #include <sys/debug.h>
42 #include <sys/policy.h>
43 
44 time_t
45 gtime(void)
46 {
47 	return (gethrestime_sec());
48 }
49 
50 int
51 stime(time_t time)
52 {
53 	timestruc_t ts;
54 
55 	if (secpolicy_settime(CRED()) != 0)
56 		return (set_errno(EPERM));
57 
58 	if (time < 0)
59 		return (set_errno(EINVAL));
60 
61 	ts.tv_sec = time;
62 	ts.tv_nsec = 0;
63 	mutex_enter(&tod_lock);
64 	tod_set(ts);
65 	set_hrestime(&ts);
66 	mutex_exit(&tod_lock);
67 
68 	return (0);
69 }
70 
71 #if defined(_SYSCALL32_IMPL)
72 int
73 stime32(time32_t time)
74 {
75 	if (time < 0)
76 		return (set_errno(EINVAL));
77 
78 	return (stime((time_t)time));
79 }
80 #endif
81