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("$FreeBSD$");
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 static int
53 linux_convert_l_sigevent(struct l_sigevent *l_sig, struct sigevent *sig)
54 {
55
56 CP(*l_sig, *sig, sigev_notify);
57 switch (l_sig->sigev_notify) {
58 case L_SIGEV_SIGNAL:
59 if (!LINUX_SIG_VALID(l_sig->sigev_signo))
60 return (EINVAL);
61 sig->sigev_notify = SIGEV_SIGNAL;
62 sig->sigev_signo = linux_to_bsd_signal(l_sig->sigev_signo);
63 PTRIN_CP(*l_sig, *sig, sigev_value.sival_ptr);
64 break;
65 case L_SIGEV_NONE:
66 sig->sigev_notify = SIGEV_NONE;
67 break;
68 case L_SIGEV_THREAD:
69 #if 0
70 /* Seems to not be used anywhere (anymore)? */
71 sig->sigev_notify = SIGEV_THREAD;
72 return (ENOSYS);
73 #else
74 return (EINVAL);
75 #endif
76 case L_SIGEV_THREAD_ID:
77 if (!LINUX_SIG_VALID(l_sig->sigev_signo))
78 return (EINVAL);
79 sig->sigev_notify = SIGEV_THREAD_ID;
80 CP2(*l_sig, *sig, _l_sigev_un._tid, sigev_notify_thread_id);
81 sig->sigev_signo = linux_to_bsd_signal(l_sig->sigev_signo);
82 PTRIN_CP(*l_sig, *sig, sigev_value.sival_ptr);
83 break;
84 default:
85 return (EINVAL);
86 }
87 return (0);
88 }
89
90 int
91 linux_timer_create(struct thread *td, struct linux_timer_create_args *uap)
92 {
93 struct l_sigevent l_ev;
94 struct sigevent ev, *evp;
95 clockid_t nwhich;
96 int error, id;
97
98 if (uap->evp == NULL) {
99 evp = NULL;
100 } else {
101 error = copyin(uap->evp, &l_ev, sizeof(l_ev));
102 if (error != 0)
103 return (error);
104 error = linux_convert_l_sigevent(&l_ev, &ev);
105 if (error != 0)
106 return (error);
107 evp = &ev;
108 }
109 error = linux_to_native_clockid(&nwhich, uap->clock_id);
110 if (error != 0)
111 return (error);
112 error = kern_ktimer_create(td, nwhich, evp, &id, -1);
113 if (error == 0) {
114 error = copyout(&id, uap->timerid, sizeof(int));
115 if (error != 0)
116 kern_ktimer_delete(td, id);
117 }
118 return (error);
119 }
120
121 int
122 linux_timer_settime(struct thread *td, struct linux_timer_settime_args *uap)
123 {
124 struct l_itimerspec l_val, l_oval;
125 struct itimerspec val, oval, *ovalp;
126 int error;
127
128 error = copyin(uap->new, &l_val, sizeof(l_val));
129 if (error != 0)
130 return (error);
131 ITS_CP(l_val, val);
132 ovalp = uap->old != NULL ? &oval : NULL;
133 error = kern_ktimer_settime(td, uap->timerid, uap->flags, &val, ovalp);
134 if (error == 0 && uap->old != NULL) {
135 ITS_CP(oval, l_oval);
136 error = copyout(&l_oval, uap->old, sizeof(l_oval));
137 }
138 return (error);
139 }
140
141 int
142 linux_timer_gettime(struct thread *td, struct linux_timer_gettime_args *uap)
143 {
144 struct l_itimerspec l_val;
145 struct itimerspec val;
146 int error;
147
148 error = kern_ktimer_gettime(td, uap->timerid, &val);
149 if (error == 0) {
150 ITS_CP(val, l_val);
151 error = copyout(&l_val, uap->setting, sizeof(l_val));
152 }
153 return (error);
154 }
155
156 int
157 linux_timer_getoverrun(struct thread *td, struct linux_timer_getoverrun_args *uap)
158 {
159
160 return (kern_ktimer_getoverrun(td, uap->timerid));
161 }
162
163 int
164 linux_timer_delete(struct thread *td, struct linux_timer_delete_args *uap)
165 {
166
167 return (kern_ktimer_delete(td, uap->timerid));
168 }
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