1 /* $NetBSD: kern_time_30.c,v 1.8 2019/12/15 16:48:26 tsutsui Exp $ */
2
3 /*-
4 * Copyright (c) 2008 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Christos Zoulas.
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 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31 #include <sys/cdefs.h>
32 __KERNEL_RCSID(0, "$NetBSD: kern_time_30.c,v 1.8 2019/12/15 16:48:26 tsutsui Exp $");
33
34 #ifdef _KERNEL_OPT
35 #include "opt_compat_netbsd.h"
36 #include "opt_ntp.h"
37 #endif
38
39 #include <sys/param.h>
40 #include <sys/systm.h>
41 #include <sys/time.h>
42 #include <sys/timex.h>
43 #include <sys/syscall.h>
44 #include <sys/syscallvar.h>
45 #include <sys/syscallargs.h>
46 #include <sys/compat_stub.h>
47
48 #include <compat/common/compat_mod.h>
49 #include <compat/common/compat_util.h>
50 #include <compat/sys/time.h>
51 #include <compat/sys/timex.h>
52
53 static const struct syscall_package kern_time_30_syscalls[] = {
54 { SYS_compat_30_ntp_gettime, 0,
55 (sy_call_t *)compat_30_sys_ntp_gettime },
56 { 0, 0, NULL }
57 };
58
59 int
compat_30_sys_ntp_gettime(struct lwp * l,const struct compat_30_sys_ntp_gettime_args * uap,register_t * retval)60 compat_30_sys_ntp_gettime(struct lwp *l,
61 const struct compat_30_sys_ntp_gettime_args *uap, register_t *retval)
62 {
63 /* {
64 syscallarg(struct ntptimeval30 *) ontvp;
65 } */
66 struct ntptimeval ntv;
67 struct ntptimeval30 ntv30;
68 struct timeval tv;
69 int error;
70
71 if (vec_ntp_gettime == NULL)
72 return ENOSYS;
73
74 if (SCARG(uap, ntvp)) {
75 (*vec_ntp_gettime)(&ntv);
76 memset(&ntv30, 0, sizeof(ntv30));
77 TIMESPEC_TO_TIMEVAL(&tv, &ntv.time);
78 timeval_to_timeval50(&tv, &ntv30.time);
79 ntv30.maxerror = ntv.maxerror;
80 ntv30.esterror = ntv.esterror;
81
82 error = copyout(&ntv30, SCARG(uap, ntvp), sizeof(ntv30));
83 if (error)
84 return error;
85 }
86 *retval = (*vec_ntp_timestatus)();
87 return 0;
88 }
89
90 int
kern_time_30_init(void)91 kern_time_30_init(void)
92 {
93
94 return syscall_establish(NULL, kern_time_30_syscalls);
95 }
96
97 int
kern_time_30_fini(void)98 kern_time_30_fini(void)
99 {
100
101 return syscall_disestablish(NULL, kern_time_30_syscalls);
102 }
103