1 /* $NetBSD: linux_time.c,v 1.14 2006/05/14 03:40:54 christos 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 *
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
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD: releng/9.1/sys/compat/linux/linux_time.c 204523 2010-03-01 17:20:04Z joel $");
34 #if 0
35 __KERNEL_RCSID(0, "$NetBSD: linux_time.c,v 1.14 2006/05/14 03:40:54 christos Exp $");
36 #endif
37
38 #include "opt_compat.h"
39
40 #include <sys/param.h>
41 #include <sys/ucred.h>
42 #include <sys/mount.h>
43 #include <sys/signal.h>
44 #include <sys/stdint.h>
45 #include <sys/syscallsubr.h>
46 #include <sys/sysproto.h>
47 #include <sys/time.h>
48 #include <sys/systm.h>
49 #include <sys/proc.h>
50
51 #ifdef COMPAT_LINUX32
52 #include <machine/../linux32/linux.h>
53 #include <machine/../linux32/linux32_proto.h>
54 #else
55 #include <machine/../linux/linux.h>
56 #include <machine/../linux/linux_proto.h>
57 #endif
58
59 static void native_to_linux_timespec(struct l_timespec *,
60 struct timespec *);
61 static int linux_to_native_timespec(struct timespec *,
62 struct l_timespec *);
63 static int linux_to_native_clockid(clockid_t *, clockid_t);
64
65 static void
66 native_to_linux_timespec(struct l_timespec *ltp, struct timespec *ntp)
67 {
68 ltp->tv_sec = ntp->tv_sec;
69 ltp->tv_nsec = ntp->tv_nsec;
70 }
71
72 static int
73 linux_to_native_timespec(struct timespec *ntp, struct l_timespec *ltp)
74 {
75 if (ltp->tv_sec < 0 || ltp->tv_nsec > (l_long)999999999L)
76 return (EINVAL);
77 ntp->tv_sec = ltp->tv_sec;
78 ntp->tv_nsec = ltp->tv_nsec;
79
80 return (0);
81 }
82
83 static int
84 linux_to_native_clockid(clockid_t *n, clockid_t l)
85 {
86 switch (l) {
87 case LINUX_CLOCK_REALTIME:
88 *n = CLOCK_REALTIME;
89 break;
90 case LINUX_CLOCK_MONOTONIC:
91 *n = CLOCK_MONOTONIC;
92 break;
93 case LINUX_CLOCK_PROCESS_CPUTIME_ID:
94 case LINUX_CLOCK_THREAD_CPUTIME_ID:
95 case LINUX_CLOCK_REALTIME_HR:
96 case LINUX_CLOCK_MONOTONIC_HR:
97 default:
98 return (EINVAL);
99 break;
100 }
101
102 return (0);
103 }
104
105 int
106 linux_clock_gettime(struct thread *td, struct linux_clock_gettime_args *args)
107 {
108 struct l_timespec lts;
109 int error;
110 clockid_t nwhich = 0; /* XXX: GCC */
111 struct timespec tp;
112
113 error = linux_to_native_clockid(&nwhich, args->which);
114 if (error != 0)
115 return (error);
116 error = kern_clock_gettime(td, nwhich, &tp);
117 if (error != 0)
118 return (error);
119 native_to_linux_timespec(<s, &tp);
120
121 return (copyout(<s, args->tp, sizeof lts));
122 }
123
124 int
125 linux_clock_settime(struct thread *td, struct linux_clock_settime_args *args)
126 {
127 struct timespec ts;
128 struct l_timespec lts;
129 int error;
130 clockid_t nwhich = 0; /* XXX: GCC */
131
132 error = linux_to_native_clockid(&nwhich, args->which);
133 if (error != 0)
134 return (error);
135 error = copyin(args->tp, <s, sizeof lts);
136 if (error != 0)
137 return (error);
138 error = linux_to_native_timespec(&ts, <s);
139 if (error != 0)
140 return (error);
141
142 return (kern_clock_settime(td, nwhich, &ts));
143 }
144
145 int
146 linux_clock_getres(struct thread *td, struct linux_clock_getres_args *args)
147 {
148 struct timespec ts;
149 struct l_timespec lts;
150 int error;
151 clockid_t nwhich = 0; /* XXX: GCC */
152
153 if (args->tp == NULL)
154 return (0);
155
156 error = linux_to_native_clockid(&nwhich, args->which);
157 if (error != 0)
158 return (error);
159 error = kern_clock_getres(td, nwhich, &ts);
160 if (error != 0)
161 return (error);
162 native_to_linux_timespec(<s, &ts);
163
164 return (copyout(<s, args->tp, sizeof lts));
165 }
166
167 int
168 linux_nanosleep(struct thread *td, struct linux_nanosleep_args *args)
169 {
170 struct timespec *rmtp;
171 struct l_timespec lrqts, lrmts;
172 struct timespec rqts, rmts;
173 int error;
174
175 error = copyin(args->rqtp, &lrqts, sizeof lrqts);
176 if (error != 0)
177 return (error);
178
179 if (args->rmtp != NULL)
180 rmtp = &rmts;
181 else
182 rmtp = NULL;
183
184 error = linux_to_native_timespec(&rqts, &lrqts);
185 if (error != 0)
186 return (error);
187 error = kern_nanosleep(td, &rqts, rmtp);
188 if (error != 0)
189 return (error);
190
191 if (args->rmtp != NULL) {
192 native_to_linux_timespec(&lrmts, rmtp);
193 error = copyout(&lrmts, args->rmtp, sizeof(lrmts));
194 if (error != 0)
195 return (error);
196 }
197
198 return (0);
199 }
200
201 int
202 linux_clock_nanosleep(struct thread *td, struct linux_clock_nanosleep_args *args)
203 {
204 struct timespec *rmtp;
205 struct l_timespec lrqts, lrmts;
206 struct timespec rqts, rmts;
207 int error;
208
209 if (args->flags != 0)
210 return (EINVAL); /* XXX deal with TIMER_ABSTIME */
211
212 if (args->which != LINUX_CLOCK_REALTIME)
213 return (EINVAL);
214
215 error = copyin(args->rqtp, &lrqts, sizeof lrqts);
216 if (error != 0)
217 return (error);
218
219 if (args->rmtp != NULL)
220 rmtp = &rmts;
221 else
222 rmtp = NULL;
223
224 error = linux_to_native_timespec(&rqts, &lrqts);
225 if (error != 0)
226 return (error);
227 error = kern_nanosleep(td, &rqts, rmtp);
228 if (error != 0)
229 return (error);
230
231 if (args->rmtp != NULL) {
232 native_to_linux_timespec(&lrmts, rmtp);
233 error = copyout(&lrmts, args->rmtp, sizeof lrmts );
234 if (error != 0)
235 return (error);
236 }
237
238 return (0);
239 }
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