xref: /illumos-gate/usr/src/uts/common/syscall/time.c (revision 20a7641f9918de8574b8b3b47dbe35c4bfc78df1)
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 #include <sys/param.h>
31 #include <sys/types.h>
32 #include <sys/sysmacros.h>
33 #include <sys/systm.h>
34 #include <sys/tuneable.h>
35 #include <sys/errno.h>
36 #include <sys/proc.h>
37 #include <sys/time.h>
38 #include <sys/debug.h>
39 #include <sys/policy.h>
40 
41 time_t
42 gtime(void)
43 {
44 	return (gethrestime_sec());
45 }
46 
47 int
48 stime(time_t time)
49 {
50 	timestruc_t ts;
51 
52 	if (secpolicy_settime(CRED()) != 0)
53 		return (set_errno(EPERM));
54 
55 	if (time < 0)
56 		return (set_errno(EINVAL));
57 
58 	ts.tv_sec = time;
59 	ts.tv_nsec = 0;
60 	mutex_enter(&tod_lock);
61 	tod_set(ts);
62 	set_hrestime(&ts);
63 	mutex_exit(&tod_lock);
64 
65 	return (0);
66 }
67 
68 #if defined(_SYSCALL32_IMPL)
69 int
70 stime32(time32_t time)
71 {
72 	if (time < 0)
73 		return (set_errno(EINVAL));
74 
75 	return (stime((time_t)time));
76 }
77 #endif
78