2 * Copyright (c) 1998 Mark Newton
3 * Copyright (c) 1994 Christos Zoulas
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
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 without specific prior written permission
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.
28 * $FreeBSD: src/sys/svr4/svr4_signal.c,v 1.9 2000/01/15 15:38:17 newton Exp $
29 * $DragonFly: src/sys/emulation/svr4/Attic/svr4_signal.c,v 1.5 2003/06/25 05:22:33 dillon Exp $
32 #include <sys/param.h>
33 #include <sys/systm.h>
35 #include <sys/filedesc.h>
36 #include <sys/signal.h>
37 #include <sys/signalvar.h>
38 #include <sys/sysproto.h>
40 #include <svr4/svr4.h>
41 #include <svr4/svr4_types.h>
42 #include <svr4/svr4_signal.h>
43 #include <svr4/svr4_proto.h>
44 #include <svr4/svr4_util.h>
45 #include <svr4/svr4_ucontext.h>
47 #define svr4_sigmask(n) (1 << (((n) - 1) & 31))
48 #define svr4_sigword(n) (((n) - 1) >> 5)
49 #define svr4_sigemptyset(s) memset((s), 0, sizeof(*(s)))
50 #define svr4_sigismember(s, n) ((s)->bits[svr4_sigword(n)] & svr4_sigmask(n))
51 #define svr4_sigaddset(s, n) ((s)->bits[svr4_sigword(n)] |= svr4_sigmask(n))
53 void svr4_to_bsd_sigaction __P((const struct svr4_sigaction *,
55 void bsd_to_svr4_sigaction __P((const struct sigaction *,
56 struct svr4_sigaction *));
57 void svr4_sigfillset __P((svr4_sigset_t *));
59 int bsd_to_svr4_sig[SVR4_SIGTBLSZ] = {
93 int svr4_to_bsd_sig[SVR4_SIGTBLSZ] = {
112 0, /* XXX NetBSD uses SIGPWR here, but we don't seem to have one */
134 for (i = 0; i < SVR4_NSIG; i++)
135 if (svr4_to_bsd_sig[i] != 0)
136 svr4_sigaddset(s, i);
140 svr4_to_bsd_sigset(sss, bss)
141 const svr4_sigset_t *sss;
147 for (i = 0; i < SVR4_NSIG; i++)
148 if (svr4_sigismember(sss, i + 1)) {
149 newsig = svr4_to_bsd_sig[i];
151 SIGADDSET(*bss, newsig);
156 bsd_to_svr4_sigset(bss, sss)
162 svr4_sigemptyset(sss);
163 sss->bits[0] = bss->__bits[0] & ~((1U << SVR4_SIGTBLSZ) - 1);
164 sss->bits[1] = bss->__bits[1];
165 sss->bits[2] = bss->__bits[2];
166 sss->bits[3] = bss->__bits[3];
167 for (i = 1; i <= SVR4_SIGTBLSZ; i++) {
168 if (SIGISMEMBER(*bss, i)) {
169 newsig = bsd_to_svr4_sig[_SIG_IDX(i)];
171 svr4_sigaddset(sss, newsig);
177 * XXX: Only a subset of the flags is currently implemented.
180 svr4_to_bsd_sigaction(ssa, bsa)
181 const struct svr4_sigaction *ssa;
182 struct sigaction *bsa;
185 bsa->sa_handler = (sig_t) ssa->ssa_handler;
186 svr4_to_bsd_sigset(&ssa->ssa_mask, &bsa->sa_mask);
188 if ((ssa->ssa_flags & SVR4_SA_ONSTACK) != 0)
189 bsa->sa_flags |= SA_ONSTACK;
190 if ((ssa->ssa_flags & SVR4_SA_RESETHAND) != 0)
191 bsa->sa_flags |= SA_RESETHAND;
192 if ((ssa->ssa_flags & SVR4_SA_RESTART) != 0)
193 bsa->sa_flags |= SA_RESTART;
194 if ((ssa->ssa_flags & SVR4_SA_SIGINFO) != 0)
195 DPRINTF(("svr4_to_bsd_sigaction: SA_SIGINFO ignored\n"));
196 if ((ssa->ssa_flags & SVR4_SA_NOCLDSTOP) != 0)
197 bsa->sa_flags |= SA_NOCLDSTOP;
198 if ((ssa->ssa_flags & SVR4_SA_NODEFER) != 0)
199 bsa->sa_flags |= SA_NODEFER;
200 if ((ssa->ssa_flags & SVR4_SA_NOCLDWAIT) != 0)
201 bsa->sa_flags |= SA_NOCLDWAIT;
202 if ((ssa->ssa_flags & ~SVR4_SA_ALLBITS) != 0)
203 DPRINTF(("svr4_to_bsd_sigaction: extra bits ignored\n"));
207 bsd_to_svr4_sigaction(bsa, ssa)
208 const struct sigaction *bsa;
209 struct svr4_sigaction *ssa;
212 ssa->ssa_handler = (svr4_sig_t) bsa->sa_handler;
213 bsd_to_svr4_sigset(&bsa->sa_mask, &ssa->ssa_mask);
215 if ((bsa->sa_flags & SA_ONSTACK) != 0)
216 ssa->ssa_flags |= SVR4_SA_ONSTACK;
217 if ((bsa->sa_flags & SA_RESETHAND) != 0)
218 ssa->ssa_flags |= SVR4_SA_RESETHAND;
219 if ((bsa->sa_flags & SA_RESTART) != 0)
220 ssa->ssa_flags |= SVR4_SA_RESTART;
221 if ((bsa->sa_flags & SA_NODEFER) != 0)
222 ssa->ssa_flags |= SVR4_SA_NODEFER;
223 if ((bsa->sa_flags & SA_NOCLDSTOP) != 0)
224 ssa->ssa_flags |= SVR4_SA_NOCLDSTOP;
228 svr4_to_bsd_sigaltstack(sss, bss)
229 const struct svr4_sigaltstack *sss;
230 struct sigaltstack *bss;
233 bss->ss_sp = sss->ss_sp;
234 bss->ss_size = sss->ss_size;
236 if ((sss->ss_flags & SVR4_SS_DISABLE) != 0)
237 bss->ss_flags |= SS_DISABLE;
238 if ((sss->ss_flags & SVR4_SS_ONSTACK) != 0)
239 bss->ss_flags |= SS_ONSTACK;
240 if ((sss->ss_flags & ~SVR4_SS_ALLBITS) != 0)
241 /*XXX*/ uprintf("svr4_to_bsd_sigaltstack: extra bits ignored\n");
245 bsd_to_svr4_sigaltstack(bss, sss)
246 const struct sigaltstack *bss;
247 struct svr4_sigaltstack *sss;
250 sss->ss_sp = bss->ss_sp;
251 sss->ss_size = bss->ss_size;
253 if ((bss->ss_flags & SS_DISABLE) != 0)
254 sss->ss_flags |= SVR4_SS_DISABLE;
255 if ((bss->ss_flags & SS_ONSTACK) != 0)
256 sss->ss_flags |= SVR4_SS_ONSTACK;
260 svr4_sys_sigaction(struct svr4_sys_sigaction_args *uap)
262 #if defined(DEBUG_SVR4)
263 struct proc *p = curproc;
265 struct svr4_sigaction *nisa, *oisa, tmpisa;
266 struct sigaction *nbsa, *obsa, tmpbsa;
267 struct sigaction_args sa;
271 DPRINTF(("@@@ svr4_sys_sigaction(%d, %d, %d)\n", p->p_pid,
273 SVR4_SVR42BSD_SIG(SCARG(uap, signum))));
275 sg = stackgap_init();
276 nisa = SCARG(uap, nsa);
277 oisa = SCARG(uap, osa);
280 obsa = stackgap_alloc(&sg, sizeof(struct sigaction));
285 nbsa = stackgap_alloc(&sg, sizeof(struct sigaction));
286 if ((error = copyin(nisa, &tmpisa, sizeof(tmpisa))) != 0)
288 svr4_to_bsd_sigaction(&tmpisa, &tmpbsa);
289 if ((error = copyout(&tmpbsa, nbsa, sizeof(tmpbsa))) != 0)
294 #if defined(DEBUG_SVR4)
297 for (i = 0; i < 4; i++)
298 DPRINTF(("\tssa_mask[%d] = %lx\n", i,
299 nisa->ssa_mask.bits[i]));
300 DPRINTF(("\tssa_handler = %p\n", nisa->ssa_handler));
304 SCARG(&sa, sig) = SVR4_SVR42BSD_SIG(SCARG(uap, signum));
305 SCARG(&sa, act) = nbsa;
306 SCARG(&sa, oact) = obsa;
308 if ((error = sigaction(&sa)) != 0)
312 if ((error = copyin(obsa, &tmpbsa, sizeof(tmpbsa))) != 0)
314 bsd_to_svr4_sigaction(&tmpbsa, &tmpisa);
315 if ((error = copyout(&tmpisa, oisa, sizeof(tmpisa))) != 0)
323 svr4_sys_sigaltstack(struct svr4_sys_sigaltstack_args *uap)
325 struct proc *p = curproc;
326 struct svr4_sigaltstack *nsss, *osss, tmpsss;
327 struct sigaltstack *nbss, *obss, tmpbss;
328 struct sigaltstack_args sa;
332 retval = p->p_retval;
333 sg = stackgap_init();
334 nsss = SCARG(uap, nss);
335 osss = SCARG(uap, oss);
338 obss = stackgap_alloc(&sg, sizeof(struct sigaltstack));
343 nbss = stackgap_alloc(&sg, sizeof(struct sigaltstack));
344 if ((error = copyin(nsss, &tmpsss, sizeof(tmpsss))) != 0)
346 svr4_to_bsd_sigaltstack(&tmpsss, &tmpbss);
347 if ((error = copyout(&tmpbss, nbss, sizeof(tmpbss))) != 0)
352 SCARG(&sa, ss) = nbss;
353 SCARG(&sa, oss) = obss;
355 if ((error = sigaltstack(&sa)) != 0)
359 if ((error = copyin(obss, &tmpbss, sizeof(tmpbss))) != 0)
361 bsd_to_svr4_sigaltstack(&tmpbss, &tmpsss);
362 if ((error = copyout(&tmpsss, osss, sizeof(tmpsss))) != 0)
370 * Stolen from the ibcs2 one
373 svr4_sys_signal(struct svr4_sys_signal_args *uap)
375 struct proc *p = curproc;
377 int error, *retval = p->p_retval;
378 caddr_t sg = stackgap_init();
380 DPRINTF(("@@@ svr4_sys_signal(%d)\n", p->p_pid));
382 signum = SVR4_SVR42BSD_SIG(SVR4_SIGNO(SCARG(uap, signum)));
383 if (signum <= 0 || signum > SVR4_NSIG)
386 switch (SVR4_SIGCALL(SCARG(uap, signum))) {
387 case SVR4_SIGDEFER_MASK:
388 if (SCARG(uap, handler) == SVR4_SIG_HOLD)
392 case SVR4_SIGNAL_MASK:
394 struct sigaction_args sa_args;
395 struct sigaction *nbsa, *obsa, sa;
397 nbsa = stackgap_alloc(&sg, sizeof(struct sigaction));
398 obsa = stackgap_alloc(&sg, sizeof(struct sigaction));
399 SCARG(&sa_args, sig) = signum;
400 SCARG(&sa_args, act) = nbsa;
401 SCARG(&sa_args, oact) = obsa;
403 sa.sa_handler = (sig_t) SCARG(uap, handler);
404 SIGEMPTYSET(sa.sa_mask);
407 if (signum != SIGALRM)
408 sa.sa_flags = SA_RESTART;
410 if ((error = copyout(&sa, nbsa, sizeof(sa))) != 0)
412 if ((error = sigaction(&sa_args)) != 0) {
413 DPRINTF(("signal: sigaction failed: %d\n",
415 *retval = (int)SVR4_SIG_ERR;
418 if ((error = copyin(obsa, &sa, sizeof(sa))) != 0)
420 *retval = (int)sa.sa_handler;
424 case SVR4_SIGHOLD_MASK:
427 struct sigprocmask_args sa;
430 set = stackgap_alloc(&sg, sizeof(sigset_t));
432 SIGADDSET(*set, signum);
433 SCARG(&sa, how) = SIG_BLOCK;
434 SCARG(&sa, set) = set;
435 SCARG(&sa, oset) = NULL;
436 return sigprocmask(&sa);
439 case SVR4_SIGRELSE_MASK:
441 struct sigprocmask_args sa;
444 set = stackgap_alloc(&sg, sizeof(sigset_t));
446 SIGADDSET(*set, signum);
447 SCARG(&sa, how) = SIG_UNBLOCK;
448 SCARG(&sa, set) = set;
449 SCARG(&sa, oset) = NULL;
450 return sigprocmask(&sa);
453 case SVR4_SIGIGNORE_MASK:
455 struct sigaction_args sa_args;
456 struct sigaction *bsa, sa;
458 bsa = stackgap_alloc(&sg, sizeof(struct sigaction));
459 SCARG(&sa_args, sig) = signum;
460 SCARG(&sa_args, act) = bsa;
461 SCARG(&sa_args, oact) = NULL;
463 sa.sa_handler = SIG_IGN;
464 SIGEMPTYSET(sa.sa_mask);
466 if ((error = copyout(&sa, bsa, sizeof(sa))) != 0)
468 if ((error = sigaction(&sa_args)) != 0) {
469 DPRINTF(("sigignore: sigaction failed\n"));
475 case SVR4_SIGPAUSE_MASK:
477 struct sigsuspend_args sa;
480 set = stackgap_alloc(&sg, sizeof(sigset_t));
482 SIGDELSET(*set, signum);
483 SCARG(&sa, sigmask) = set;
484 return sigsuspend(&sa);
494 svr4_sys_sigprocmask(struct svr4_sys_sigprocmask_args *uap)
496 struct proc *p = curproc;
499 int error = 0, *retval;
501 retval = p->p_retval;
502 if (SCARG(uap, oset) != NULL) {
503 /* Fix the return value first if needed */
504 bsd_to_svr4_sigset(&p->p_sigmask, &sss);
505 if ((error = copyout(&sss, SCARG(uap, oset), sizeof(sss))) != 0)
509 if (SCARG(uap, set) == NULL)
513 if ((error = copyin(SCARG(uap, set), &sss, sizeof(sss))) != 0)
516 svr4_to_bsd_sigset(&sss, &bss);
520 switch (SCARG(uap, how)) {
522 SIGSETOR(p->p_sigmask, bss);
523 SIG_CANTMASK(p->p_sigmask);
526 case SVR4_SIG_UNBLOCK:
527 SIGSETNAND(p->p_sigmask, bss);
530 case SVR4_SIG_SETMASK:
532 SIG_CANTMASK(p->p_sigmask);
546 svr4_sys_sigpending(struct svr4_sys_sigpending_args *uap)
548 struct proc *p = curproc;
553 DPRINTF(("@@@ svr4_sys_sigpending(%d)\n", p->p_pid));
554 retval = p->p_retval;
555 switch (SCARG(uap, what)) {
556 case 1: /* sigpending */
557 if (SCARG(uap, mask) == NULL)
560 SIGSETAND(bss, p->p_sigmask);
561 bsd_to_svr4_sigset(&bss, &sss);
564 case 2: /* sigfillset */
565 svr4_sigfillset(&sss);
566 #if defined(DEBUG_SVR4)
569 for (i = 0; i < 4; i++)
570 DPRINTF(("new sigset[%d] = %lx\n", i, (long)sss.bits[i]));
579 return copyout(&sss, SCARG(uap, mask), sizeof(sss));
583 svr4_sys_sigsuspend(struct svr4_sys_sigsuspend_args *uap)
587 struct sigsuspend_args sa;
589 caddr_t sg = stackgap_init();
591 if ((error = copyin(SCARG(uap, ss), &sss, sizeof(sss))) != 0)
594 bss = stackgap_alloc(&sg, sizeof(sigset_t));
595 svr4_to_bsd_sigset(&sss, bss);
597 SCARG(&sa, sigmask) = bss;
598 return sigsuspend(&sa);
603 svr4_sys_kill(struct svr4_sys_kill_args *uap)
607 SCARG(&ka, pid) = SCARG(uap, pid);
608 SCARG(&ka, signum) = SVR4_SVR42BSD_SIG(SCARG(uap, signum));
614 svr4_sys_context(struct svr4_sys_context_args *uap)
616 struct proc *p = curproc;
617 struct svr4_ucontext uc;
622 DPRINTF(("getcontext(%p)\n", uap->uc));
623 svr4_getcontext(p, &uc, &p->p_sigmask,
624 p->p_sigstk.ss_flags & SS_ONSTACK);
625 return copyout(&uc, uap->uc, sizeof(uc));
628 DPRINTF(("setcontext(%p)\n", uap->uc));
629 if ((error = copyin(uap->uc, &uc, sizeof(uc))) != 0)
631 DPRINTF(("uc_flags = %lx\n", uc.uc_flags));
632 #if defined(DEBUG_SVR4)
635 for (i = 0; i < 4; i++)
636 DPRINTF(("uc_sigmask[%d] = %lx\n", i,
637 uc.uc_sigmask.bits[i]));
640 return svr4_setcontext(p, &uc);
643 DPRINTF(("context(%d, %p)\n", uap->func,
651 svr4_sys_pause(struct svr4_sys_pause_args *uap)
653 struct proc *p = curproc;
654 struct sigsuspend_args bsa;
656 SCARG(&bsa, sigmask) = &p->p_sigmask;
657 return sigsuspend(&bsa);