FreeBSD/Linux Kernel Cross Reference
sys/dev/clockctl.c
1 /* $NetBSD: clockctl.c,v 1.23 2007/11/25 00:35:27 elad Exp $ */
2
3 /*-
4 * Copyright (c) 2001 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Emmanuel Dreyfus.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. The name of the author may not be used to endorse or promote products
19 * derived from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #include <sys/cdefs.h>
34 __KERNEL_RCSID(0, "$NetBSD: clockctl.c,v 1.23 2007/11/25 00:35:27 elad Exp $");
35
36 #include "opt_ntp.h"
37
38 #include <sys/param.h>
39 #include <sys/systm.h>
40 #include <sys/proc.h>
41 #include <sys/errno.h>
42 #include <sys/ioctl.h>
43 #include <sys/device.h>
44 #include <sys/time.h>
45 #include <sys/conf.h>
46 #ifdef NTP
47 #include <sys/timex.h>
48 #endif /* NTP */
49
50 #include <sys/clockctl.h>
51
52 struct clockctl_softc {
53 struct device clockctl_dev;
54 };
55
56 dev_type_ioctl(clockctlioctl);
57
58 const struct cdevsw clockctl_cdevsw = {
59 nullopen, nullclose, noread, nowrite, clockctlioctl,
60 nostop, notty, nopoll, nommap, nokqfilter, D_OTHER,
61 };
62
63 /*ARGSUSED*/
64 void
65 clockctlattach(int num)
66 {
67 /* Nothing to set up before open is called */
68 return;
69 }
70
71 int
72 clockctlioctl(
73 dev_t dev,
74 u_long cmd,
75 void *data,
76 int flags,
77 struct lwp *l)
78 {
79 int error = 0;
80
81 switch (cmd) {
82 case CLOCKCTL_SETTIMEOFDAY: {
83 struct clockctl_settimeofday *args =
84 (struct clockctl_settimeofday *)data;
85
86 error = settimeofday1(args->tv, true, args->tzp, l, false);
87 if (error)
88 return (error);
89 break;
90 }
91 case CLOCKCTL_ADJTIME: {
92 struct clockctl_adjtime *args =
93 (struct clockctl_adjtime *)data;
94
95 error = adjtime1(args->delta, args->olddelta,
96 l->l_proc);
97 if (error)
98 return (error);
99 break;
100 }
101 case CLOCKCTL_CLOCK_SETTIME: {
102 struct clockctl_clock_settime *args =
103 (struct clockctl_clock_settime *)data;
104
105 error = clock_settime1(l->l_proc, args->clock_id,
106 args->tp, false);
107 if (error)
108 return (error);
109 break;
110 }
111 #ifdef NTP
112 case CLOCKCTL_NTP_ADJTIME: {
113 struct clockctl_ntp_adjtime *args =
114 (struct clockctl_ntp_adjtime *)data;
115 struct timex ntv;
116 register_t retval;
117
118 error = copyin(args->tp, &ntv, sizeof(ntv));
119 if (error)
120 return (error);
121
122 ntp_adjtime1(&ntv);
123
124 error = copyout(&ntv, args->tp, sizeof(ntv));
125 if (error == 0)
126 (void)copyout(&retval, &args->retval, sizeof(retval));
127
128 return (error);
129 }
130 #endif /* NTP */
131 default:
132 error = EINVAL;
133 }
134
135 return (error);
136 }
137
138
Cache object: fdf0cf2c95aec44dcc5b38f7c3f50b00
|