1 /*-
2 * Copyright (c) 2014 Bjoern A. Zeeb
3 * All rights reserved.
4 *
5 * This software was developed by SRI International and the University of
6 * Cambridge Computer Laboratory under DARPA/AFRL contract FA8750-11-C-0249
7 * ("MRC2"), as part of the DARPA MRC research programme.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD: releng/10.3/sys/compat/linux/linux_timer.c 293578 2016-01-09 17:31:20Z dchagin $");
32
33 #include "opt_compat.h"
34
35 #include <sys/param.h>
36 #include <sys/errno.h>
37 #include <sys/signal.h>
38 #include <sys/syscallsubr.h>
39 #include <sys/systm.h>
40 #include <sys/time.h>
41 #include <sys/types.h>
42
43 #ifdef COMPAT_LINUX32
44 #include <machine/../linux32/linux.h>
45 #include <machine/../linux32/linux32_proto.h>
46 #else
47 #include <machine/../linux/linux.h>
48 #include <machine/../linux/linux_proto.h>
49 #endif
50 #include <compat/linux/linux_timer.h>
51
52
53 static int
54 linux_convert_l_sigevent(struct l_sigevent *l_sig, struct sigevent *sig)
55 {
56
57 CP(*l_sig, *sig, sigev_notify);
58 switch (l_sig->sigev_notify) {
59 case L_SIGEV_SIGNAL:
60 sig->sigev_notify = SIGEV_SIGNAL;
61 sig->sigev_signo = linux_to_bsd_signal(l_sig->sigev_signo);
62 PTRIN_CP(*l_sig, *sig, sigev_value.sival_ptr);
63 break;
64 case L_SIGEV_NONE:
65 sig->sigev_notify = SIGEV_NONE;
66 break;
67 case L_SIGEV_THREAD:
68 #if 0
69 /* Seems to not be used anywhere (anymore)? */
70 sig->sigev_notify = SIGEV_THREAD;
71 return (ENOSYS);
72 #else
73 return (EINVAL);
74 #endif
75 case L_SIGEV_THREAD_ID:
76 sig->sigev_notify = SIGEV_THREAD_ID;
77 CP2(*l_sig, *sig, _l_sigev_un._tid, sigev_notify_thread_id);
78 sig->sigev_signo = linux_to_bsd_signal(l_sig->sigev_signo);
79 PTRIN_CP(*l_sig, *sig, sigev_value.sival_ptr);
80 break;
81 default:
82 return (EINVAL);
83 }
84 return (0);
85 }
86
87 int
88 linux_timer_create(struct thread *td, struct linux_timer_create_args *uap)
89 {
90 struct l_sigevent l_ev;
91 struct sigevent ev, *evp;
92 clockid_t nwhich;
93 int error, id;
94
95 if (uap->evp == NULL) {
96 evp = NULL;
97 } else {
98 error = copyin(uap->evp, &l_ev, sizeof(l_ev));
99 if (error != 0)
100 return (error);
101 error = linux_convert_l_sigevent(&l_ev, &ev);
102 if (error != 0)
103 return (error);
104 evp = &ev;
105 }
106 error = linux_to_native_clockid(&nwhich, uap->clock_id);
107 if (error != 0)
108 return (error);
109 error = kern_ktimer_create(td, nwhich, evp, &id, -1);
110 if (error == 0) {
111 error = copyout(&id, uap->timerid, sizeof(int));
112 if (error != 0)
113 kern_ktimer_delete(td, id);
114 }
115 return (error);
116 }
117
118 int
119 linux_timer_settime(struct thread *td, struct linux_timer_settime_args *uap)
120 {
121 struct l_itimerspec l_val, l_oval;
122 struct itimerspec val, oval, *ovalp;
123 int error;
124
125 error = copyin(uap->new, &l_val, sizeof(l_val));
126 if (error != 0)
127 return (error);
128 ITS_CP(l_val, val);
129 ovalp = uap->old != NULL ? &oval : NULL;
130 error = kern_ktimer_settime(td, uap->timerid, uap->flags, &val, ovalp);
131 if (error == 0 && uap->old != NULL) {
132 ITS_CP(oval, l_oval);
133 error = copyout(&l_oval, uap->old, sizeof(l_oval));
134 }
135 return (error);
136 }
137
138 int
139 linux_timer_gettime(struct thread *td, struct linux_timer_gettime_args *uap)
140 {
141 struct l_itimerspec l_val;
142 struct itimerspec val;
143 int error;
144
145 error = kern_ktimer_gettime(td, uap->timerid, &val);
146 if (error == 0) {
147 ITS_CP(val, l_val);
148 error = copyout(&l_val, uap->setting, sizeof(l_val));
149 }
150 return (error);
151 }
152
153 int
154 linux_timer_getoverrun(struct thread *td, struct linux_timer_getoverrun_args *uap)
155 {
156
157 return (kern_ktimer_getoverrun(td, uap->timerid));
158 }
159
160 int
161 linux_timer_delete(struct thread *td, struct linux_timer_delete_args *uap)
162 {
163
164 return (kern_ktimer_delete(td, uap->timerid));
165 }
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