1 /* $NetBSD: svr4_32_signal.c,v 1.13 2005/02/26 23:10:21 perry Exp $ */
2
3 /*-
4 * Copyright (c) 1994, 1998 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 and by Charles M. Hannum.
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 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the NetBSD
21 * Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 * contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39 #include <sys/cdefs.h>
40 __KERNEL_RCSID(0, "$NetBSD: svr4_32_signal.c,v 1.13 2005/02/26 23:10:21 perry Exp $");
41
42 #if defined(_KERNEL_OPT)
43 #include "opt_compat_svr4.h"
44 #endif
45
46 #include <sys/param.h>
47 #include <sys/systm.h>
48 #include <sys/namei.h>
49 #include <sys/proc.h>
50 #include <sys/filedesc.h>
51 #include <sys/ioctl.h>
52 #include <sys/mount.h>
53 #include <sys/kernel.h>
54 #include <sys/signal.h>
55 #include <sys/signalvar.h>
56 #include <sys/malloc.h>
57 #include <sys/wait.h>
58
59 #include <sys/sa.h>
60 #include <sys/syscallargs.h>
61
62 #include <compat/svr4_32/svr4_32_types.h>
63 #include <compat/svr4_32/svr4_32_signal.h>
64 #include <compat/svr4_32/svr4_32_lwp.h>
65 #include <compat/svr4_32/svr4_32_ucontext.h>
66 #include <compat/svr4_32/svr4_32_syscallargs.h>
67 #include <compat/svr4_32/svr4_32_util.h>
68 #include <compat/svr4_32/svr4_32_ucontext.h>
69
70 #define svr4_sigmask(n) (1 << (((n) - 1) & 31))
71 #define svr4_sigword(n) (((n) - 1) >> 5)
72 #define svr4_sigemptyset(s) memset((s), 0, sizeof(*(s)))
73 #define svr4_sigismember(s, n) ((s)->bits[svr4_sigword(n)] & svr4_sigmask(n))
74 #define svr4_sigaddset(s, n) ((s)->bits[svr4_sigword(n)] |= svr4_sigmask(n))
75
76 static __inline void svr4_32_sigfillset __P((svr4_32_sigset_t *));
77 void svr4_32_to_native_sigaction __P((const struct svr4_32_sigaction *,
78 struct sigaction *));
79 void native_to_svr4_32_sigaction __P((const struct sigaction *,
80 struct svr4_32_sigaction *));
81
82 #ifndef COMPAT_SVR4
83 const int native_to_svr4_signo[NSIG] = {
84 0, /* 0 */
85 SVR4_SIGHUP, /* 1 */
86 SVR4_SIGINT, /* 2 */
87 SVR4_SIGQUIT, /* 3 */
88 SVR4_SIGILL, /* 4 */
89 SVR4_SIGTRAP, /* 5 */
90 SVR4_SIGABRT, /* 6 */
91 SVR4_SIGEMT, /* 7 */
92 SVR4_SIGFPE, /* 8 */
93 SVR4_SIGKILL, /* 9 */
94 SVR4_SIGBUS, /* 10 */
95 SVR4_SIGSEGV, /* 11 */
96 SVR4_SIGSYS, /* 12 */
97 SVR4_SIGPIPE, /* 13 */
98 SVR4_SIGALRM, /* 14 */
99 SVR4_SIGTERM, /* 15 */
100 SVR4_SIGURG, /* 16 */
101 SVR4_SIGSTOP, /* 17 */
102 SVR4_SIGTSTP, /* 18 */
103 SVR4_SIGCONT, /* 19 */
104 SVR4_SIGCHLD, /* 20 */
105 SVR4_SIGTTIN, /* 21 */
106 SVR4_SIGTTOU, /* 22 */
107 SVR4_SIGIO, /* 23 */
108 SVR4_SIGXCPU, /* 24 */
109 SVR4_SIGXFSZ, /* 25 */
110 SVR4_SIGVTALRM, /* 26 */
111 SVR4_SIGPROF, /* 27 */
112 SVR4_SIGWINCH, /* 28 */
113 0, /* 29 SIGINFO */
114 SVR4_SIGUSR1, /* 30 */
115 SVR4_SIGUSR2, /* 31 */
116 SVR4_SIGPWR, /* 32 */
117 SVR4_SIGRTMIN + 0, /* 33 */
118 SVR4_SIGRTMIN + 1, /* 34 */
119 SVR4_SIGRTMIN + 2, /* 35 */
120 SVR4_SIGRTMIN + 3, /* 36 */
121 SVR4_SIGRTMIN + 4, /* 37 */
122 SVR4_SIGRTMIN + 5, /* 38 */
123 SVR4_SIGRTMIN + 6, /* 39 */
124 SVR4_SIGRTMIN + 7, /* 40 */
125 SVR4_SIGRTMIN + 8, /* 41 */
126 SVR4_SIGRTMIN + 9, /* 42 */
127 SVR4_SIGRTMIN + 10, /* 43 */
128 SVR4_SIGRTMIN + 11, /* 44 */
129 SVR4_SIGRTMIN + 12, /* 45 */
130 SVR4_SIGRTMIN + 13, /* 46 */
131 SVR4_SIGRTMIN + 14, /* 47 */
132 SVR4_SIGRTMIN + 15, /* 48 */
133 SVR4_SIGRTMIN + 16, /* 49 */
134 SVR4_SIGRTMIN + 17, /* 50 */
135 SVR4_SIGRTMIN + 18, /* 51 */
136 SVR4_SIGRTMIN + 19, /* 52 */
137 SVR4_SIGRTMIN + 20, /* 53 */
138 SVR4_SIGRTMIN + 21, /* 54 */
139 SVR4_SIGRTMIN + 22, /* 55 */
140 SVR4_SIGRTMIN + 23, /* 56 */
141 SVR4_SIGRTMIN + 24, /* 57 */
142 SVR4_SIGRTMIN + 25, /* 58 */
143 SVR4_SIGRTMIN + 26, /* 59 */
144 SVR4_SIGRTMIN + 27, /* 60 */
145 SVR4_SIGRTMIN + 28, /* 61 */
146 SVR4_SIGRTMIN + 29, /* 62 */
147 SVR4_SIGRTMIN + 30, /* 63 */
148 };
149
150 const int svr4_to_native_signo[SVR4_NSIG] = {
151 0, /* 0 */
152 SIGHUP, /* 1 */
153 SIGINT, /* 2 */
154 SIGQUIT, /* 3 */
155 SIGILL, /* 4 */
156 SIGTRAP, /* 5 */
157 SIGABRT, /* 6 */
158 SIGEMT, /* 7 */
159 SIGFPE, /* 8 */
160 SIGKILL, /* 9 */
161 SIGBUS, /* 10 */
162 SIGSEGV, /* 11 */
163 SIGSYS, /* 12 */
164 SIGPIPE, /* 13 */
165 SIGALRM, /* 14 */
166 SIGTERM, /* 15 */
167 SIGUSR1, /* 16 */
168 SIGUSR2, /* 17 */
169 SIGCHLD, /* 18 */
170 SIGPWR, /* 19 */
171 SIGWINCH, /* 20 */
172 SIGURG, /* 21 */
173 SIGIO, /* 22 */
174 SIGSTOP, /* 23 */
175 SIGTSTP, /* 24 */
176 SIGCONT, /* 25 */
177 SIGTTIN, /* 26 */
178 SIGTTOU, /* 27 */
179 SIGVTALRM, /* 28 */
180 SIGPROF, /* 29 */
181 SIGXCPU, /* 30 */
182 SIGXFSZ, /* 31 */
183 SIGRTMIN + 0, /* 32 */
184 SIGRTMIN + 1, /* 33 */
185 SIGRTMIN + 2, /* 34 */
186 SIGRTMIN + 3, /* 35 */
187 SIGRTMIN + 4, /* 36 */
188 SIGRTMIN + 5, /* 37 */
189 SIGRTMIN + 6, /* 38 */
190 SIGRTMIN + 7, /* 39 */
191 SIGRTMIN + 8, /* 40 */
192 SIGRTMIN + 9, /* 41 */
193 SIGRTMIN + 10, /* 42 */
194 SIGRTMIN + 11, /* 43 */
195 SIGRTMIN + 12, /* 44 */
196 SIGRTMIN + 13, /* 45 */
197 SIGRTMIN + 14, /* 46 */
198 SIGRTMIN + 15, /* 47 */
199 SIGRTMIN + 16, /* 48 */
200 SIGRTMIN + 17, /* 49 */
201 SIGRTMIN + 18, /* 50 */
202 SIGRTMIN + 19, /* 51 */
203 SIGRTMIN + 20, /* 52 */
204 SIGRTMIN + 21, /* 53 */
205 SIGRTMIN + 22, /* 54 */
206 SIGRTMIN + 23, /* 55 */
207 SIGRTMIN + 24, /* 56 */
208 SIGRTMIN + 25, /* 57 */
209 SIGRTMIN + 26, /* 58 */
210 SIGRTMIN + 27, /* 59 */
211 SIGRTMIN + 28, /* 60 */
212 SIGRTMIN + 29, /* 61 */
213 SIGRTMIN + 30, /* 62 */
214 0, /* 63 */
215 };
216 #endif
217
218 static __inline void
219 svr4_32_sigfillset(s)
220 svr4_32_sigset_t *s;
221 {
222 int i;
223
224 svr4_sigemptyset(s);
225 for (i = 1; i < SVR4_NSIG; i++)
226 if (svr4_to_native_signo[i] != 0)
227 svr4_sigaddset(s, i);
228 }
229
230 void
231 svr4_32_to_native_sigset(sss, bss)
232 const svr4_32_sigset_t *sss;
233 sigset_t *bss;
234 {
235 int i, newsig;
236
237 sigemptyset(bss);
238 for (i = 1; i < SVR4_NSIG; i++) {
239 if (svr4_sigismember(sss, i)) {
240 newsig = svr4_to_native_signo[i];
241 if (newsig)
242 sigaddset(bss, newsig);
243 }
244 }
245 }
246
247
248 void
249 native_to_svr4_32_sigset(bss, sss)
250 const sigset_t *bss;
251 svr4_32_sigset_t *sss;
252 {
253 int i, newsig;
254
255 svr4_sigemptyset(sss);
256 for (i = 1; i < NSIG; i++) {
257 if (sigismember(bss, i)) {
258 newsig = native_to_svr4_signo[i];
259 if (newsig)
260 svr4_sigaddset(sss, newsig);
261 }
262 }
263 }
264
265 /*
266 * XXX: Only a subset of the flags is currently implemented.
267 */
268 void
269 svr4_32_to_native_sigaction(ssa, bsa)
270 const struct svr4_32_sigaction *ssa;
271 struct sigaction *bsa;
272 {
273
274 bsa->sa_handler = (sig_t)(u_long) ssa->svr4_32_sa_handler;
275 svr4_32_to_native_sigset(&ssa->svr4_32_sa_mask, &bsa->sa_mask);
276 bsa->sa_flags = 0;
277 if ((ssa->svr4_32_sa_flags & SVR4_SA_ONSTACK) != 0)
278 bsa->sa_flags |= SA_ONSTACK;
279 if ((ssa->svr4_32_sa_flags & SVR4_SA_RESETHAND) != 0)
280 bsa->sa_flags |= SA_RESETHAND;
281 if ((ssa->svr4_32_sa_flags & SVR4_SA_RESTART) != 0)
282 bsa->sa_flags |= SA_RESTART;
283 if ((ssa->svr4_32_sa_flags & SVR4_SA_SIGINFO) != 0)
284 DPRINTF(("svr4_to_native_sigaction: SA_SIGINFO ignored\n"));
285 if ((ssa->svr4_32_sa_flags & SVR4_SA_NODEFER) != 0)
286 bsa->sa_flags |= SA_NODEFER;
287 if ((ssa->svr4_32_sa_flags & SVR4_SA_NOCLDWAIT) != 0)
288 bsa->sa_flags |= SA_NOCLDWAIT;
289 if ((ssa->svr4_32_sa_flags & SVR4_SA_NOCLDSTOP) != 0)
290 bsa->sa_flags |= SA_NOCLDSTOP;
291 if ((ssa->svr4_32_sa_flags & ~SVR4_SA_ALLBITS) != 0)
292 DPRINTF(("svr4_32_to_native_sigaction: extra bits %x ignored\n",
293 ssa->svr4_32_sa_flags & ~SVR4_SA_ALLBITS));
294 }
295
296 void
297 native_to_svr4_32_sigaction(bsa, ssa)
298 const struct sigaction *bsa;
299 struct svr4_32_sigaction *ssa;
300 {
301
302 ssa->svr4_32_sa_handler = (svr4_32_sig_t)(u_long) bsa->sa_handler;
303 native_to_svr4_32_sigset(&bsa->sa_mask, &ssa->svr4_32_sa_mask);
304 ssa->svr4_32_sa_flags = 0;
305 if ((bsa->sa_flags & SA_ONSTACK) != 0)
306 ssa->svr4_32_sa_flags |= SVR4_SA_ONSTACK;
307 if ((bsa->sa_flags & SA_RESETHAND) != 0)
308 ssa->svr4_32_sa_flags |= SVR4_SA_RESETHAND;
309 if ((bsa->sa_flags & SA_RESTART) != 0)
310 ssa->svr4_32_sa_flags |= SVR4_SA_RESTART;
311 if ((bsa->sa_flags & SA_NODEFER) != 0)
312 ssa->svr4_32_sa_flags |= SVR4_SA_NODEFER;
313 if ((bsa->sa_flags & SA_NOCLDSTOP) != 0)
314 ssa->svr4_32_sa_flags |= SVR4_SA_NOCLDSTOP;
315 }
316
317 void
318 svr4_32_to_native_sigaltstack(sss, bss)
319 const struct svr4_32_sigaltstack *sss;
320 struct sigaltstack *bss;
321 {
322
323 bss->ss_sp = (caddr_t)(u_long)sss->ss_sp;
324 bss->ss_size = sss->ss_size;
325 bss->ss_flags = 0;
326 if ((sss->ss_flags & SVR4_SS_DISABLE) != 0)
327 bss->ss_flags |= SS_DISABLE;
328 if ((sss->ss_flags & SVR4_SS_ONSTACK) != 0)
329 bss->ss_flags |= SS_ONSTACK;
330 if ((sss->ss_flags & ~SVR4_SS_ALLBITS) != 0)
331 /*XXX*/ printf("svr4_to_native_sigaltstack: extra bits %x ignored\n",
332 sss->ss_flags & ~SVR4_SS_ALLBITS);
333 }
334
335 void
336 native_to_svr4_32_sigaltstack(bss, sss)
337 const struct sigaltstack *bss;
338 struct svr4_32_sigaltstack *sss;
339 {
340
341 sss->ss_sp = (u_long)bss->ss_sp;
342 sss->ss_size = bss->ss_size;
343 sss->ss_flags = 0;
344 if ((bss->ss_flags & SS_DISABLE) != 0)
345 sss->ss_flags |= SVR4_SS_DISABLE;
346 if ((bss->ss_flags & SS_ONSTACK) != 0)
347 sss->ss_flags |= SVR4_SS_ONSTACK;
348 }
349
350 int
351 svr4_32_sys_sigaction(l, v, retval)
352 struct lwp *l;
353 void *v;
354 register_t *retval;
355 {
356 struct svr4_32_sys_sigaction_args /* {
357 syscallarg(int) signum;
358 syscallarg(const struct svr4_32_sigaction *) nsa;
359 syscallarg(struct svr4_32_sigaction *) osa;
360 } */ *uap = v;
361 struct svr4_32_sigaction nssa, ossa;
362 struct sigaction nbsa, obsa;
363 int error;
364
365 if (SCARG(uap, nsa)) {
366 error = copyin((caddr_t)(u_long)SCARG(uap, nsa),
367 &nssa, sizeof(nssa));
368 if (error)
369 return (error);
370 svr4_32_to_native_sigaction(&nssa, &nbsa);
371 }
372 error = sigaction1(l->l_proc,
373 svr4_to_native_signo[SVR4_SIGNO(SCARG(uap, signum))],
374 SCARG(uap, nsa) ? &nbsa : 0, SCARG(uap, osa) ? &obsa : 0,
375 NULL, 0);
376 if (error)
377 return (error);
378 if (SCARG(uap, osa)) {
379 native_to_svr4_32_sigaction(&obsa, &ossa);
380 error = copyout(&ossa, (caddr_t)(u_long)SCARG(uap, osa),
381 sizeof(ossa));
382 if (error)
383 return (error);
384 }
385 return (0);
386 }
387
388 int
389 svr4_32_sys_sigaltstack(l, v, retval)
390 struct lwp *l;
391 void *v;
392 register_t *retval;
393 {
394 struct svr4_32_sys_sigaltstack_args /* {
395 syscallarg(const struct svr4_32_sigaltstack *) nss;
396 syscallarg(struct svr4_32_sigaltstack *) oss;
397 } */ *uap = v;
398 struct svr4_32_sigaltstack nsss, osss;
399 struct sigaltstack nbss, obss;
400 int error;
401
402 if (SCARG(uap, nss)) {
403 error = copyin((caddr_t)(u_long)SCARG(uap, nss),
404 &nsss, sizeof(nsss));
405 if (error)
406 return (error);
407 svr4_32_to_native_sigaltstack(&nsss, &nbss);
408 }
409 error = sigaltstack1(l->l_proc,
410 SCARG(uap, nss) ? &nbss : 0, SCARG(uap, oss) ? &obss : 0);
411 if (error)
412 return (error);
413 if (SCARG(uap, oss)) {
414 native_to_svr4_32_sigaltstack(&obss, &osss);
415 error = copyout(&osss, (caddr_t)(u_long)SCARG(uap, oss),
416 sizeof(osss));
417 if (error)
418 return (error);
419 }
420 return (0);
421 }
422
423 /*
424 * Stolen from the ibcs2 one
425 */
426 int
427 svr4_32_sys_signal(l, v, retval)
428 struct lwp *l;
429 void *v;
430 register_t *retval;
431 {
432 struct svr4_32_sys_signal_args /* {
433 syscallarg(int) signum;
434 syscallarg(svr4_32_sig_t) handler;
435 } */ *uap = v;
436 struct proc *p = l->l_proc;
437 int signum = svr4_to_native_signo[SVR4_SIGNO(SCARG(uap, signum))];
438 struct sigaction nbsa, obsa;
439 sigset_t ss;
440 int error;
441
442 if (signum <= 0 || signum >= SVR4_NSIG)
443 return (EINVAL);
444
445 switch (SVR4_SIGCALL(SCARG(uap, signum))) {
446 case SVR4_SIGDEFER_MASK:
447 if (SCARG(uap, handler) == SVR4_SIG_HOLD)
448 goto sighold;
449 /* FALLTHROUGH */
450
451 case SVR4_SIGNAL_MASK:
452 nbsa.sa_handler = (sig_t)SCARG(uap, handler);
453 sigemptyset(&nbsa.sa_mask);
454 nbsa.sa_flags = 0;
455 error = sigaction1(p, signum, &nbsa, &obsa, NULL, 0);
456 if (error)
457 return (error);
458 *retval = (u_int)(u_long)obsa.sa_handler;
459 return (0);
460
461 case SVR4_SIGHOLD_MASK:
462 sighold:
463 sigemptyset(&ss);
464 sigaddset(&ss, signum);
465 return (sigprocmask1(p, SIG_BLOCK, &ss, 0));
466
467 case SVR4_SIGRELSE_MASK:
468 sigemptyset(&ss);
469 sigaddset(&ss, signum);
470 return (sigprocmask1(p, SIG_UNBLOCK, &ss, 0));
471
472 case SVR4_SIGIGNORE_MASK:
473 nbsa.sa_handler = SIG_IGN;
474 sigemptyset(&nbsa.sa_mask);
475 nbsa.sa_flags = 0;
476 return (sigaction1(p, signum, &nbsa, 0, NULL, 0));
477
478 case SVR4_SIGPAUSE_MASK:
479 ss = p->p_sigctx.ps_sigmask;
480 sigdelset(&ss, signum);
481 return (sigsuspend1(p, &ss));
482
483 default:
484 return (ENOSYS);
485 }
486 }
487
488 int
489 svr4_32_sys_sigprocmask(l, v, retval)
490 struct lwp *l;
491 void *v;
492 register_t *retval;
493 {
494 struct svr4_32_sys_sigprocmask_args /* {
495 syscallarg(int) how;
496 syscallarg(const svr4_32_sigset_t *) set;
497 syscallarg(svr4_32_sigset_t *) oset;
498 } */ *uap = v;
499 svr4_32_sigset_t nsss, osss;
500 sigset_t nbss, obss;
501 int how;
502 int error;
503
504 /*
505 * Initialize how to 0 to avoid a compiler warning. Note that
506 * this is safe because of the check in the default: case.
507 */
508 how = 0;
509
510 switch (SCARG(uap, how)) {
511 case SVR4_SIG_BLOCK:
512 how = SIG_BLOCK;
513 break;
514 case SVR4_SIG_UNBLOCK:
515 how = SIG_UNBLOCK;
516 break;
517 case SVR4_SIG_SETMASK:
518 how = SIG_SETMASK;
519 break;
520 default:
521 if (SCARG(uap, set))
522 return EINVAL;
523 break;
524 }
525
526 if (SCARG(uap, set)) {
527 error = copyin((caddr_t)(u_long)SCARG(uap, set),
528 &nsss, sizeof(nsss));
529 if (error)
530 return error;
531 svr4_32_to_native_sigset(&nsss, &nbss);
532 }
533 error = sigprocmask1(l->l_proc, how,
534 SCARG(uap, set) ? &nbss : NULL, SCARG(uap, oset) ? &obss : NULL);
535 if (error)
536 return error;
537 if (SCARG(uap, oset)) {
538 native_to_svr4_32_sigset(&obss, &osss);
539 error = copyout(&osss, (caddr_t)(u_long)SCARG(uap, oset),
540 sizeof(osss));
541 if (error)
542 return error;
543 }
544 return 0;
545 }
546
547 int
548 svr4_32_sys_sigpending(l, v, retval)
549 struct lwp *l;
550 void *v;
551 register_t *retval;
552 {
553 struct svr4_32_sys_sigpending_args /* {
554 syscallarg(int) what;
555 syscallarg(svr4_sigset_t *) set;
556 } */ *uap = v;
557 sigset_t bss;
558 svr4_32_sigset_t sss;
559
560 switch (SCARG(uap, what)) {
561 case 1: /* sigpending */
562 sigpending1(l->l_proc, &bss);
563 native_to_svr4_32_sigset(&bss, &sss);
564 break;
565
566 case 2: /* sigfillset */
567 svr4_32_sigfillset(&sss);
568 break;
569
570 default:
571 return (EINVAL);
572 }
573 return (copyout(&sss, (caddr_t)(u_long)SCARG(uap, set), sizeof(sss)));
574 }
575
576 int
577 svr4_32_sys_sigsuspend(l, v, retval)
578 struct lwp *l;
579 void *v;
580 register_t *retval;
581 {
582 struct svr4_32_sys_sigsuspend_args /* {
583 syscallarg(const svr4_32_sigset_t *) set;
584 } */ *uap = v;
585 svr4_32_sigset_t sss;
586 sigset_t bss;
587 int error;
588
589 if (SCARG(uap, set)) {
590 error = copyin((caddr_t)(u_long)SCARG(uap, set), &sss, sizeof(sss));
591 if (error)
592 return (error);
593 svr4_32_to_native_sigset(&sss, &bss);
594 }
595
596 return (sigsuspend1(l->l_proc, SCARG(uap, set) ? &bss : 0));
597 }
598
599 int
600 svr4_32_sys_pause(l, v, retval)
601 struct lwp *l;
602 void *v;
603 register_t *retval;
604 {
605
606 return (sigsuspend1(l->l_proc, 0));
607 }
608
609 int
610 svr4_32_sys_kill(l, v, retval)
611 struct lwp *l;
612 void *v;
613 register_t *retval;
614 {
615 struct svr4_32_sys_kill_args /* {
616 syscallarg(int) pid;
617 syscallarg(int) signum;
618 } */ *uap = v;
619 struct sys_kill_args ka;
620
621 SCARG(&ka, pid) = SCARG(uap, pid);
622 SCARG(&ka, signum) = svr4_to_native_signo[SVR4_SIGNO(SCARG(uap, signum))];
623 return sys_kill(l, &ka, retval);
624 }
625
626 void
627 svr4_32_getcontext(l, uc, mask)
628 struct lwp *l;
629 struct svr4_32_ucontext *uc;
630 const sigset_t *mask;
631 {
632 void *sp;
633 struct svr4_32_sigaltstack *ss = &uc->uc_stack;
634
635 memset(uc, 0, sizeof(*uc));
636
637 /* get machine context */
638 sp = svr4_32_getmcontext(l, &uc->uc_mcontext, &uc->uc_flags);
639
640 /* get link */
641 uc->uc_link = (u_long)l->l_ctxlink;
642
643 /* get stack state. XXX: solaris appears to do this */
644 #if 0
645 svr4_32_to_native_sigaltstack(&uc->uc_stack, &p->p_sigacts->ps_sigstk);
646 #else
647 ss->ss_sp = (((u_long) sp) & ~(16384 - 1));
648 ss->ss_size = 16384;
649 ss->ss_flags = 0;
650 #endif
651 /* get signal mask */
652 native_to_svr4_32_sigset(mask, &uc->uc_sigmask);
653
654 uc->uc_flags |= SVR4_UC_STACK|SVR4_UC_SIGMASK;
655 }
656
657
658 int
659 svr4_32_setcontext(l, uc)
660 struct lwp *l;
661 struct svr4_32_ucontext *uc;
662 {
663 int error;
664 struct proc *p = l->l_proc;
665
666 /* set machine context */
667 if ((error = svr4_32_setmcontext(l, &uc->uc_mcontext, uc->uc_flags)) != 0)
668 return error;
669
670 /* set link */
671 l->l_ctxlink = (caddr_t)(u_long)uc->uc_link;
672
673 /* set signal stack */
674 if (uc->uc_flags & SVR4_UC_STACK) {
675 svr4_32_to_native_sigaltstack(&uc->uc_stack,
676 &p->p_sigctx.ps_sigstk);
677 }
678
679 /* set signal mask */
680 if (uc->uc_flags & SVR4_UC_SIGMASK) {
681 sigset_t mask;
682
683 svr4_32_to_native_sigset(&uc->uc_sigmask, &mask);
684 (void)sigprocmask1(p, SIG_SETMASK, &mask, 0);
685 }
686
687 return EJUSTRETURN;
688 }
689
690 int
691 svr4_32_sys_context(l, v, retval)
692 struct lwp *l;
693 void *v;
694 register_t *retval;
695 {
696 struct svr4_32_sys_context_args /* {
697 syscallarg(int) func;
698 syscallarg(struct svr4_32_ucontext *) uc;
699 } */ *uap = v;
700 struct proc *p = l->l_proc;
701 struct svr4_32_ucontext uc;
702 int error;
703 *retval = 0;
704
705 switch (SCARG(uap, func)) {
706 case SVR4_GETCONTEXT:
707 DPRINTF(("getcontext(%p)\n", SCARG(uap, uc)));
708 svr4_32_getcontext(l, &uc, &p->p_sigctx.ps_sigmask);
709 return copyout(&uc, (caddr_t)(u_long)SCARG(uap, uc), sizeof(uc));
710
711 case SVR4_SETCONTEXT:
712 DPRINTF(("setcontext(%p)\n", SCARG(uap, uc)));
713 if (!SCARG(uap, uc))
714 exit1(l, W_EXITCODE(0, 0));
715 else if ((error = copyin((caddr_t)(u_long)SCARG(uap, uc),
716 &uc, sizeof(uc))) != 0)
717 return error;
718 else
719 return svr4_32_setcontext(l, &uc);
720
721 default:
722 DPRINTF(("context(%d, %p)\n", SCARG(uap, func),
723 SCARG(uap, uc)));
724 return ENOSYS;
725 }
726 return 0;
727 }
Cache object: ab922d0fb4d260c38be5eedfdf5adda2
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