1/*-
2 * Copyright (c) 1994-1995 S�ren Schmidt
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer
10 * in this position and unchanged.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software withough specific prior written permission
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
| 1/*-
2 * Copyright (c) 1994-1995 S�ren Schmidt
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer
10 * in this position and unchanged.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software withough specific prior written permission
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
|
29 */
30
31#include <sys/param.h>
32#include <sys/systm.h>
33#include <sys/sysproto.h>
34#include <sys/proc.h>
35#include <sys/signalvar.h>
36
37#include <i386/linux/linux.h>
38#include <i386/linux/linux_proto.h>
39#include <i386/linux/linux_util.h>
40
41static sigset_t
42linux_to_bsd_sigset(linux_sigset_t mask) {
43 int b, l;
44 sigset_t new = 0;
45
46 for (l = 1; l < LINUX_NSIG; l++) {
47 if (mask & (1 << (l - 1))) {
48 if ((b = linux_to_bsd_signal[l]))
49 new |= (1 << (b - 1));
50 }
51 }
52 return new;
53}
54
55static linux_sigset_t
56bsd_to_linux_sigset(sigset_t mask) {
57 int b, l;
58 sigset_t new = 0;
59
60 for (b = 1; b < NSIG; b++) {
61 if (mask & (1 << (b - 1))) {
62 if ((l = bsd_to_linux_signal[b]))
63 new |= (1 << (l - 1));
64 }
65 }
66 return new;
67}
68
69static void
70linux_to_bsd_sigaction(linux_sigaction_t *lsa, struct sigaction *bsa)
71{
72 bsa->sa_mask = linux_to_bsd_sigset(lsa->sa_mask);
73 bsa->sa_handler = lsa->sa_handler;
74 bsa->sa_flags = 0;
75 if (lsa->sa_flags & LINUX_SA_NOCLDSTOP)
76 bsa->sa_flags |= SA_NOCLDSTOP;
77 if (lsa->sa_flags & LINUX_SA_ONSTACK)
78 bsa->sa_flags |= SA_ONSTACK;
79 if (lsa->sa_flags & LINUX_SA_RESTART)
80 bsa->sa_flags |= SA_RESTART;
81 if (lsa->sa_flags & LINUX_SA_ONESHOT)
82 bsa->sa_flags |= SA_RESETHAND;
83 if (lsa->sa_flags & LINUX_SA_NOMASK)
84 bsa->sa_flags |= SA_NODEFER;
85}
86
87static void
88bsd_to_linux_sigaction(struct sigaction *bsa, linux_sigaction_t *lsa)
89{
90 lsa->sa_handler = bsa->sa_handler;
91 lsa->sa_restorer = NULL; /* unsupported */
92 lsa->sa_mask = bsd_to_linux_sigset(bsa->sa_mask);
93 lsa->sa_flags = 0;
94 if (bsa->sa_flags & SA_NOCLDSTOP)
95 lsa->sa_flags |= LINUX_SA_NOCLDSTOP;
96 if (bsa->sa_flags & SA_ONSTACK)
97 lsa->sa_flags |= LINUX_SA_ONSTACK;
98 if (bsa->sa_flags & SA_RESTART)
99 lsa->sa_flags |= LINUX_SA_RESTART;
100 if (bsa->sa_flags & SA_RESETHAND)
101 lsa->sa_flags |= LINUX_SA_ONESHOT;
102 if (bsa->sa_flags & SA_NODEFER)
103 lsa->sa_flags |= LINUX_SA_NOMASK;
104}
105
106int
107linux_sigaction(struct proc *p, struct linux_sigaction_args *args)
108{
109 linux_sigaction_t linux_sa;
110 struct sigaction *nsa = NULL, *osa = NULL, bsd_sa;
111 struct sigaction_args sa;
112 int error;
113 caddr_t sg = stackgap_init();
114
115#ifdef DEBUG
116 printf("Linux-emul(%ld): sigaction(%d, %p, %p)\n",
117 (long)p->p_pid, args->sig, (void *)args->nsa, (void *)args->osa);
118#endif
119 if (args->sig <= 0 || args->sig >= LINUX_NSIG)
120 return EINVAL;
121 if (args->osa)
122 osa = (struct sigaction *)stackgap_alloc(&sg, sizeof(struct sigaction));
123
124 if (args->nsa) {
125 nsa = (struct sigaction *)stackgap_alloc(&sg, sizeof(struct sigaction));
126 if (error = copyin(args->nsa, &linux_sa, sizeof(linux_sigaction_t)))
127 return error;
128 linux_to_bsd_sigaction(&linux_sa, &bsd_sa);
129 if (error = copyout(&bsd_sa, nsa, sizeof(struct sigaction)))
130 return error;
131 }
132 sa.signum = linux_to_bsd_signal[args->sig];
133 sa.nsa = nsa;
134 sa.osa = osa;
135 if ((error = sigaction(p, &sa)))
136 return error;
137
138 if (args->osa) {
139 if (error = copyin(osa, &bsd_sa, sizeof(struct sigaction)))
140 return error;
141 bsd_to_linux_sigaction(&bsd_sa, &linux_sa);
142 if (error = copyout(&linux_sa, args->osa, sizeof(linux_sigaction_t)))
143 return error;
144 }
145 return 0;
146}
147
148int
149linux_signal(struct proc *p, struct linux_signal_args *args)
150{
151 caddr_t sg;
152 struct sigaction_args sa_args;
153 struct sigaction *osa, *nsa, tmpsa;
154 int error;
155
156#ifdef DEBUG
157 printf("Linux-emul(%ld): signal(%d, %p)\n",
158 (long)p->p_pid, args->sig, (void *)args->handler);
159#endif
160 if (args->sig <= 0 || args->sig >= LINUX_NSIG)
161 return EINVAL;
162 sg = stackgap_init();
163 nsa = stackgap_alloc(&sg, sizeof *nsa);
164 osa = stackgap_alloc(&sg, sizeof *osa);
165
166 tmpsa.sa_handler = args->handler;
167 tmpsa.sa_mask = (sigset_t) 0;
168 tmpsa.sa_flags = SA_RESETHAND | SA_NODEFER;
169 if ((error = copyout(&tmpsa, nsa, sizeof tmpsa)))
170 return error;
171
172 sa_args.signum = linux_to_bsd_signal[args->sig];
173 sa_args.osa = osa;
174 sa_args.nsa = nsa;
175 if ((error = sigaction(p, &sa_args)))
176 return error;
177
178 if ((error = copyin(osa, &tmpsa, sizeof *osa)))
179 return error;
180
181 p->p_retval[0] = (int)tmpsa.sa_handler;
182
183 return 0;
184}
185
186
187int
188linux_sigprocmask(struct proc *p, struct linux_sigprocmask_args *args)
189{
190 int error, s;
191 sigset_t mask;
192 sigset_t omask;
193
194#ifdef DEBUG
195 printf("Linux-emul(%d): sigprocmask(%d, *, *)\n", p->p_pid, args->how);
196#endif
197
198 p->p_retval[0] = 0;
199
200 if (args->omask != NULL) {
201 omask = bsd_to_linux_sigset(p->p_sigmask);
202 if (error = copyout(&omask, args->omask, sizeof(sigset_t)))
203 return error;
204 }
205 if (!(args->mask))
206 return 0;
207 if (error = copyin(args->mask, &mask, sizeof(linux_sigset_t)))
208 return error;
209
210 mask = linux_to_bsd_sigset(mask);
211 s = splhigh();
212 switch (args->how) {
213 case LINUX_SIG_BLOCK:
214 p->p_sigmask |= (mask & ~sigcantmask);
215 break;
216 case LINUX_SIG_UNBLOCK:
217 p->p_sigmask &= ~mask;
218 break;
219 case LINUX_SIG_SETMASK:
220 p->p_sigmask = (mask & ~sigcantmask);
221 break;
222 default:
223 error = EINVAL;
224 break;
225 }
226 splx(s);
227 return error;
228}
229
230int
231linux_siggetmask(struct proc *p, struct linux_siggetmask_args *args)
232{
233#ifdef DEBUG
234 printf("Linux-emul(%d): siggetmask()\n", p->p_pid);
235#endif
236 p->p_retval[0] = bsd_to_linux_sigset(p->p_sigmask);
237 return 0;
238}
239
240int
241linux_sigsetmask(struct proc *p, struct linux_sigsetmask_args *args)
242{
243 int s;
244 sigset_t mask;
245
246#ifdef DEBUG
247 printf("Linux-emul(%ld): sigsetmask(%08lx)\n",
248 (long)p->p_pid, (unsigned long)args->mask);
249#endif
250 p->p_retval[0] = bsd_to_linux_sigset(p->p_sigmask);
251
252 mask = linux_to_bsd_sigset(args->mask);
253 s = splhigh();
254 p->p_sigmask = mask & ~sigcantmask;
255 splx(s);
256 return 0;
257}
258
259int
260linux_sigpending(struct proc *p, struct linux_sigpending_args *args)
261{
262 linux_sigset_t linux_sig;
263
264#ifdef DEBUG
265 printf("Linux-emul(%d): sigpending(*)\n", p->p_pid);
266#endif
267 linux_sig = bsd_to_linux_sigset(p->p_siglist & p->p_sigmask);
268 return copyout(&linux_sig, args->mask, sizeof(linux_sig));
269}
270
271/*
272 * Linux has two extra args, restart and oldmask. We dont use these,
273 * but it seems that "restart" is actually a context pointer that
274 * enables the signal to happen with a different register set.
275 */
276int
277linux_sigsuspend(struct proc *p, struct linux_sigsuspend_args *args)
278{
279 struct sigsuspend_args tmp;
280
281#ifdef DEBUG
282 printf("Linux-emul(%ld): sigsuspend(%08lx)\n",
283 (long)p->p_pid, (unsigned long)args->mask);
284#endif
285 tmp.mask = linux_to_bsd_sigset(args->mask);
286 return sigsuspend(p, &tmp);
287}
288
289int
290linux_pause(struct proc *p, struct linux_pause_args *args)
291{
292 struct sigsuspend_args tmp;
293
294#ifdef DEBUG
295 printf("Linux-emul(%d): pause()\n", p->p_pid);
296#endif
297 tmp.mask = p->p_sigmask;
298 return sigsuspend(p, &tmp);
299}
300
301int
302linux_kill(struct proc *p, struct linux_kill_args *args)
303{
304 struct kill_args /* {
305 int pid;
306 int signum;
307 } */ tmp;
308
309#ifdef DEBUG
310 printf("Linux-emul(%d): kill(%d, %d)\n",
311 p->p_pid, args->pid, args->signum);
312#endif
| 29 */
30
31#include <sys/param.h>
32#include <sys/systm.h>
33#include <sys/sysproto.h>
34#include <sys/proc.h>
35#include <sys/signalvar.h>
36
37#include <i386/linux/linux.h>
38#include <i386/linux/linux_proto.h>
39#include <i386/linux/linux_util.h>
40
41static sigset_t
42linux_to_bsd_sigset(linux_sigset_t mask) {
43 int b, l;
44 sigset_t new = 0;
45
46 for (l = 1; l < LINUX_NSIG; l++) {
47 if (mask & (1 << (l - 1))) {
48 if ((b = linux_to_bsd_signal[l]))
49 new |= (1 << (b - 1));
50 }
51 }
52 return new;
53}
54
55static linux_sigset_t
56bsd_to_linux_sigset(sigset_t mask) {
57 int b, l;
58 sigset_t new = 0;
59
60 for (b = 1; b < NSIG; b++) {
61 if (mask & (1 << (b - 1))) {
62 if ((l = bsd_to_linux_signal[b]))
63 new |= (1 << (l - 1));
64 }
65 }
66 return new;
67}
68
69static void
70linux_to_bsd_sigaction(linux_sigaction_t *lsa, struct sigaction *bsa)
71{
72 bsa->sa_mask = linux_to_bsd_sigset(lsa->sa_mask);
73 bsa->sa_handler = lsa->sa_handler;
74 bsa->sa_flags = 0;
75 if (lsa->sa_flags & LINUX_SA_NOCLDSTOP)
76 bsa->sa_flags |= SA_NOCLDSTOP;
77 if (lsa->sa_flags & LINUX_SA_ONSTACK)
78 bsa->sa_flags |= SA_ONSTACK;
79 if (lsa->sa_flags & LINUX_SA_RESTART)
80 bsa->sa_flags |= SA_RESTART;
81 if (lsa->sa_flags & LINUX_SA_ONESHOT)
82 bsa->sa_flags |= SA_RESETHAND;
83 if (lsa->sa_flags & LINUX_SA_NOMASK)
84 bsa->sa_flags |= SA_NODEFER;
85}
86
87static void
88bsd_to_linux_sigaction(struct sigaction *bsa, linux_sigaction_t *lsa)
89{
90 lsa->sa_handler = bsa->sa_handler;
91 lsa->sa_restorer = NULL; /* unsupported */
92 lsa->sa_mask = bsd_to_linux_sigset(bsa->sa_mask);
93 lsa->sa_flags = 0;
94 if (bsa->sa_flags & SA_NOCLDSTOP)
95 lsa->sa_flags |= LINUX_SA_NOCLDSTOP;
96 if (bsa->sa_flags & SA_ONSTACK)
97 lsa->sa_flags |= LINUX_SA_ONSTACK;
98 if (bsa->sa_flags & SA_RESTART)
99 lsa->sa_flags |= LINUX_SA_RESTART;
100 if (bsa->sa_flags & SA_RESETHAND)
101 lsa->sa_flags |= LINUX_SA_ONESHOT;
102 if (bsa->sa_flags & SA_NODEFER)
103 lsa->sa_flags |= LINUX_SA_NOMASK;
104}
105
106int
107linux_sigaction(struct proc *p, struct linux_sigaction_args *args)
108{
109 linux_sigaction_t linux_sa;
110 struct sigaction *nsa = NULL, *osa = NULL, bsd_sa;
111 struct sigaction_args sa;
112 int error;
113 caddr_t sg = stackgap_init();
114
115#ifdef DEBUG
116 printf("Linux-emul(%ld): sigaction(%d, %p, %p)\n",
117 (long)p->p_pid, args->sig, (void *)args->nsa, (void *)args->osa);
118#endif
119 if (args->sig <= 0 || args->sig >= LINUX_NSIG)
120 return EINVAL;
121 if (args->osa)
122 osa = (struct sigaction *)stackgap_alloc(&sg, sizeof(struct sigaction));
123
124 if (args->nsa) {
125 nsa = (struct sigaction *)stackgap_alloc(&sg, sizeof(struct sigaction));
126 if (error = copyin(args->nsa, &linux_sa, sizeof(linux_sigaction_t)))
127 return error;
128 linux_to_bsd_sigaction(&linux_sa, &bsd_sa);
129 if (error = copyout(&bsd_sa, nsa, sizeof(struct sigaction)))
130 return error;
131 }
132 sa.signum = linux_to_bsd_signal[args->sig];
133 sa.nsa = nsa;
134 sa.osa = osa;
135 if ((error = sigaction(p, &sa)))
136 return error;
137
138 if (args->osa) {
139 if (error = copyin(osa, &bsd_sa, sizeof(struct sigaction)))
140 return error;
141 bsd_to_linux_sigaction(&bsd_sa, &linux_sa);
142 if (error = copyout(&linux_sa, args->osa, sizeof(linux_sigaction_t)))
143 return error;
144 }
145 return 0;
146}
147
148int
149linux_signal(struct proc *p, struct linux_signal_args *args)
150{
151 caddr_t sg;
152 struct sigaction_args sa_args;
153 struct sigaction *osa, *nsa, tmpsa;
154 int error;
155
156#ifdef DEBUG
157 printf("Linux-emul(%ld): signal(%d, %p)\n",
158 (long)p->p_pid, args->sig, (void *)args->handler);
159#endif
160 if (args->sig <= 0 || args->sig >= LINUX_NSIG)
161 return EINVAL;
162 sg = stackgap_init();
163 nsa = stackgap_alloc(&sg, sizeof *nsa);
164 osa = stackgap_alloc(&sg, sizeof *osa);
165
166 tmpsa.sa_handler = args->handler;
167 tmpsa.sa_mask = (sigset_t) 0;
168 tmpsa.sa_flags = SA_RESETHAND | SA_NODEFER;
169 if ((error = copyout(&tmpsa, nsa, sizeof tmpsa)))
170 return error;
171
172 sa_args.signum = linux_to_bsd_signal[args->sig];
173 sa_args.osa = osa;
174 sa_args.nsa = nsa;
175 if ((error = sigaction(p, &sa_args)))
176 return error;
177
178 if ((error = copyin(osa, &tmpsa, sizeof *osa)))
179 return error;
180
181 p->p_retval[0] = (int)tmpsa.sa_handler;
182
183 return 0;
184}
185
186
187int
188linux_sigprocmask(struct proc *p, struct linux_sigprocmask_args *args)
189{
190 int error, s;
191 sigset_t mask;
192 sigset_t omask;
193
194#ifdef DEBUG
195 printf("Linux-emul(%d): sigprocmask(%d, *, *)\n", p->p_pid, args->how);
196#endif
197
198 p->p_retval[0] = 0;
199
200 if (args->omask != NULL) {
201 omask = bsd_to_linux_sigset(p->p_sigmask);
202 if (error = copyout(&omask, args->omask, sizeof(sigset_t)))
203 return error;
204 }
205 if (!(args->mask))
206 return 0;
207 if (error = copyin(args->mask, &mask, sizeof(linux_sigset_t)))
208 return error;
209
210 mask = linux_to_bsd_sigset(mask);
211 s = splhigh();
212 switch (args->how) {
213 case LINUX_SIG_BLOCK:
214 p->p_sigmask |= (mask & ~sigcantmask);
215 break;
216 case LINUX_SIG_UNBLOCK:
217 p->p_sigmask &= ~mask;
218 break;
219 case LINUX_SIG_SETMASK:
220 p->p_sigmask = (mask & ~sigcantmask);
221 break;
222 default:
223 error = EINVAL;
224 break;
225 }
226 splx(s);
227 return error;
228}
229
230int
231linux_siggetmask(struct proc *p, struct linux_siggetmask_args *args)
232{
233#ifdef DEBUG
234 printf("Linux-emul(%d): siggetmask()\n", p->p_pid);
235#endif
236 p->p_retval[0] = bsd_to_linux_sigset(p->p_sigmask);
237 return 0;
238}
239
240int
241linux_sigsetmask(struct proc *p, struct linux_sigsetmask_args *args)
242{
243 int s;
244 sigset_t mask;
245
246#ifdef DEBUG
247 printf("Linux-emul(%ld): sigsetmask(%08lx)\n",
248 (long)p->p_pid, (unsigned long)args->mask);
249#endif
250 p->p_retval[0] = bsd_to_linux_sigset(p->p_sigmask);
251
252 mask = linux_to_bsd_sigset(args->mask);
253 s = splhigh();
254 p->p_sigmask = mask & ~sigcantmask;
255 splx(s);
256 return 0;
257}
258
259int
260linux_sigpending(struct proc *p, struct linux_sigpending_args *args)
261{
262 linux_sigset_t linux_sig;
263
264#ifdef DEBUG
265 printf("Linux-emul(%d): sigpending(*)\n", p->p_pid);
266#endif
267 linux_sig = bsd_to_linux_sigset(p->p_siglist & p->p_sigmask);
268 return copyout(&linux_sig, args->mask, sizeof(linux_sig));
269}
270
271/*
272 * Linux has two extra args, restart and oldmask. We dont use these,
273 * but it seems that "restart" is actually a context pointer that
274 * enables the signal to happen with a different register set.
275 */
276int
277linux_sigsuspend(struct proc *p, struct linux_sigsuspend_args *args)
278{
279 struct sigsuspend_args tmp;
280
281#ifdef DEBUG
282 printf("Linux-emul(%ld): sigsuspend(%08lx)\n",
283 (long)p->p_pid, (unsigned long)args->mask);
284#endif
285 tmp.mask = linux_to_bsd_sigset(args->mask);
286 return sigsuspend(p, &tmp);
287}
288
289int
290linux_pause(struct proc *p, struct linux_pause_args *args)
291{
292 struct sigsuspend_args tmp;
293
294#ifdef DEBUG
295 printf("Linux-emul(%d): pause()\n", p->p_pid);
296#endif
297 tmp.mask = p->p_sigmask;
298 return sigsuspend(p, &tmp);
299}
300
301int
302linux_kill(struct proc *p, struct linux_kill_args *args)
303{
304 struct kill_args /* {
305 int pid;
306 int signum;
307 } */ tmp;
308
309#ifdef DEBUG
310 printf("Linux-emul(%d): kill(%d, %d)\n",
311 p->p_pid, args->pid, args->signum);
312#endif
|