2 * Copyright (c) 1995 Scott Bartram
3 * Copyright (c) 1995 Steven Wallace
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/i386/ibcs2/ibcs2_signal.c,v 1.16 1999/10/10 09:14:31 marcel Exp $
31 #include <sys/param.h>
32 #include <sys/systm.h>
33 #include <sys/signalvar.h>
34 #include <sys/sysproto.h>
36 #include <i386/ibcs2/ibcs2_types.h>
37 #include <i386/ibcs2/ibcs2_signal.h>
38 #include <i386/ibcs2/ibcs2_proto.h>
39 #include <i386/ibcs2/ibcs2_xenix.h>
40 #include <i386/ibcs2/ibcs2_util.h>
42 #define sigemptyset(s) SIGEMPTYSET(*(s))
43 #define sigismember(s, n) SIGISMEMBER(*(s), n)
44 #define sigaddset(s, n) SIGADDSET(*(s), n)
46 #define ibcs2_sigmask(n) (1 << ((n) - 1))
47 #define ibcs2_sigemptyset(s) bzero((s), sizeof(*(s)))
48 #define ibcs2_sigismember(s, n) (*(s) & ibcs2_sigmask(n))
49 #define ibcs2_sigaddset(s, n) (*(s) |= ibcs2_sigmask(n))
51 static void ibcs2_to_bsd_sigset __P((const ibcs2_sigset_t *, sigset_t *));
52 static void bsd_to_ibcs2_sigset __P((const sigset_t *, ibcs2_sigset_t *));
53 static void ibcs2_to_bsd_sigaction __P((struct ibcs2_sigaction *,
55 static void bsd_to_ibcs2_sigaction __P((struct sigaction *,
56 struct ibcs2_sigaction *));
58 int bsd_to_ibcs2_sig[IBCS2_SIGTBLSZ] = {
61 IBCS2_SIGQUIT, /* 3 */
63 IBCS2_SIGTRAP, /* 5 */
64 IBCS2_SIGABRT, /* 6 */
67 IBCS2_SIGKILL, /* 9 */
68 IBCS2_SIGBUS, /* 10 */
69 IBCS2_SIGSEGV, /* 11 */
70 IBCS2_SIGSYS, /* 12 */
71 IBCS2_SIGPIPE, /* 13 */
72 IBCS2_SIGALRM, /* 14 */
73 IBCS2_SIGTERM, /* 15 */
75 IBCS2_SIGSTOP, /* 17 */
76 IBCS2_SIGTSTP, /* 18 */
77 IBCS2_SIGCONT, /* 19 */
78 IBCS2_SIGCLD, /* 20 */
79 IBCS2_SIGTTIN, /* 21 */
80 IBCS2_SIGTTOU, /* 22 */
81 IBCS2_SIGPOLL, /* 23 */
84 IBCS2_SIGVTALRM, /* 26 */
85 IBCS2_SIGPROF, /* 27 */
86 IBCS2_SIGWINCH, /* 28 */
88 IBCS2_SIGUSR1, /* 30 */
89 IBCS2_SIGUSR2, /* 31 */
93 static int ibcs2_to_bsd_sig[IBCS2_SIGTBLSZ] = {
129 ibcs2_to_bsd_sigset(iss, bss)
130 const ibcs2_sigset_t *iss;
136 for (i = 1; i <= IBCS2_SIGTBLSZ; i++) {
137 if (ibcs2_sigismember(iss, i)) {
138 newsig = ibcs2_to_bsd_sig[_SIG_IDX(i)];
140 sigaddset(bss, newsig);
146 bsd_to_ibcs2_sigset(bss, iss)
152 ibcs2_sigemptyset(iss);
153 for (i = 1; i <= IBCS2_SIGTBLSZ; i++) {
154 if (sigismember(bss, i)) {
155 newsig = bsd_to_ibcs2_sig[_SIG_IDX(i)];
157 ibcs2_sigaddset(iss, newsig);
163 ibcs2_to_bsd_sigaction(isa, bsa)
164 struct ibcs2_sigaction *isa;
165 struct sigaction *bsa;
168 bsa->sa_handler = isa->isa_handler;
169 ibcs2_to_bsd_sigset(&isa->isa_mask, &bsa->sa_mask);
170 bsa->sa_flags = 0; /* ??? SA_NODEFER */
171 if ((isa->isa_flags & IBCS2_SA_NOCLDSTOP) != 0)
172 bsa->sa_flags |= SA_NOCLDSTOP;
176 bsd_to_ibcs2_sigaction(bsa, isa)
177 struct sigaction *bsa;
178 struct ibcs2_sigaction *isa;
181 isa->isa_handler = bsa->sa_handler;
182 bsd_to_ibcs2_sigset(&bsa->sa_mask, &isa->isa_mask);
184 if ((bsa->sa_flags & SA_NOCLDSTOP) != 0)
185 isa->isa_flags |= IBCS2_SA_NOCLDSTOP;
189 ibcs2_sigaction(p, uap)
190 register struct proc *p;
191 struct ibcs2_sigaction_args *uap;
193 struct ibcs2_sigaction *nisa, *oisa, tmpisa;
194 struct sigaction *nbsa, *obsa, tmpbsa;
195 struct sigaction_args sa;
199 sg = stackgap_init();
200 nisa = SCARG(uap, act);
201 oisa = SCARG(uap, oact);
204 obsa = stackgap_alloc(&sg, sizeof(struct sigaction));
209 nbsa = stackgap_alloc(&sg, sizeof(struct sigaction));
210 if ((error = copyin(nisa, &tmpisa, sizeof(tmpisa))) != 0)
212 ibcs2_to_bsd_sigaction(&tmpisa, &tmpbsa);
213 if ((error = copyout(&tmpbsa, nbsa, sizeof(tmpbsa))) != 0)
218 SCARG(&sa, sig) = ibcs2_to_bsd_sig[_SIG_IDX(SCARG(uap, sig))];
219 SCARG(&sa, act) = nbsa;
220 SCARG(&sa, oact) = obsa;
222 if ((error = sigaction(p, &sa)) != 0)
226 if ((error = copyin(obsa, &tmpbsa, sizeof(tmpbsa))) != 0)
228 bsd_to_ibcs2_sigaction(&tmpbsa, &tmpisa);
229 if ((error = copyout(&tmpisa, oisa, sizeof(tmpisa))) != 0)
238 register struct proc *p;
239 struct ibcs2_sigsys_args *uap;
242 int signum = ibcs2_to_bsd_sig[_SIG_IDX(IBCS2_SIGNO(SCARG(uap, sig)))];
244 caddr_t sg = stackgap_init();
246 if (signum <= 0 || signum >= IBCS2_NSIG) {
247 if (IBCS2_SIGCALL(SCARG(uap, sig)) == IBCS2_SIGNAL_MASK ||
248 IBCS2_SIGCALL(SCARG(uap, sig)) == IBCS2_SIGSET_MASK)
249 p->p_retval[0] = (int)IBCS2_SIG_ERR;
253 switch (IBCS2_SIGCALL(SCARG(uap, sig))) {
254 case IBCS2_SIGSET_MASK:
256 * Check for SIG_HOLD action.
257 * Otherwise, perform signal() except with different sa_flags.
259 if (SCARG(uap, fp) != IBCS2_SIG_HOLD) {
260 /* add sig to mask before exececuting signal handler */
264 /* else fallthrough to sighold */
266 case IBCS2_SIGHOLD_MASK:
269 struct sigprocmask_args sa;
272 SIGADDSET(mask, signum);
273 SCARG(&sa, how) = SIG_BLOCK;
274 SCARG(&sa, set) = &mask;
275 SCARG(&sa, oset) = NULL;
276 return sigprocmask(p, &sa);
279 case IBCS2_SIGNAL_MASK:
281 struct sigaction_args sa_args;
282 struct sigaction *nbsa, *obsa;
284 /* do not automatically block signal */
285 sa.sa_flags = SA_NODEFER;
287 if((signum != IBCS2_SIGILL) &&
288 (signum != IBCS2_SIGTRAP) &&
289 (signum != IBCS2_SIGPWR))
290 /* set to SIG_DFL before executing handler */
291 sa.sa_flags |= SA_RESETHAND;
294 nbsa = stackgap_alloc(&sg, sizeof(struct sigaction));
295 obsa = stackgap_alloc(&sg, sizeof(struct sigaction));
296 SCARG(&sa_args, sig) = signum;
297 SCARG(&sa_args, act) = nbsa;
298 SCARG(&sa_args, oact) = obsa;
300 sa.sa_handler = SCARG(uap, fp);
301 sigemptyset(&sa.sa_mask);
303 if (signum != SIGALRM)
304 sa.sa_flags |= SA_RESTART;
306 p->p_retval[0] = (int)IBCS2_SIG_ERR; /* init error return */
308 /* perform native sigaction() */
309 if ((error = copyout(&sa, nbsa, sizeof(sa))) != 0)
311 if ((error = sigaction(p, &sa_args)) != 0) {
312 DPRINTF(("signal: sigaction failed: %d\n",
316 if ((error = copyin(obsa, &sa, sizeof(sa))) != 0)
318 p->p_retval[0] = (int)sa.sa_handler;
320 /* special sigset() check */
321 if(IBCS2_SIGCALL(SCARG(uap, sig)) == IBCS2_SIGSET_MASK)
322 /* check to make sure signal is not blocked */
323 if(sigismember(&p->p_sigmask, signum)) {
324 /* return SIG_HOLD and unblock signal*/
325 p->p_retval[0] = (int)IBCS2_SIG_HOLD;
326 SIGDELSET(p->p_sigmask, signum);
332 case IBCS2_SIGRELSE_MASK:
335 struct sigprocmask_args sa;
338 SIGADDSET(mask, signum);
339 SCARG(&sa, how) = SIG_UNBLOCK;
340 SCARG(&sa, set) = &mask;
341 SCARG(&sa, oset) = NULL;
342 return sigprocmask(p, &sa);
345 case IBCS2_SIGIGNORE_MASK:
347 struct sigaction_args sa_args;
348 struct sigaction *bsa;
350 bsa = stackgap_alloc(&sg, sizeof(struct sigaction));
351 SCARG(&sa_args, sig) = signum;
352 SCARG(&sa_args, act) = bsa;
353 SCARG(&sa_args, oact) = NULL;
355 sa.sa_handler = SIG_IGN;
356 sigemptyset(&sa.sa_mask);
358 if ((error = copyout(&sa, bsa, sizeof(sa))) != 0)
360 if ((error = sigaction(p, &sa_args)) != 0) {
361 DPRINTF(("sigignore: sigaction failed\n"));
367 case IBCS2_SIGPAUSE_MASK:
370 struct sigsuspend_args sa;
373 SIGDELSET(mask, signum);
374 SCARG(&sa, sigmask) = &mask;
375 return sigsuspend(p, &sa);
384 ibcs2_sigprocmask(p, uap)
385 register struct proc *p;
386 struct ibcs2_sigprocmask_args *uap;
392 if (SCARG(uap, oset) != NULL) {
393 /* Fix the return value first if needed */
394 bsd_to_ibcs2_sigset(&p->p_sigmask, &iss);
395 if ((error = copyout(&iss, SCARG(uap, oset), sizeof(iss))) != 0)
399 if (SCARG(uap, set) == NULL)
403 if ((error = copyin(SCARG(uap, set), &iss, sizeof(iss))) != 0)
406 ibcs2_to_bsd_sigset(&iss, &bss);
410 switch (SCARG(uap, how)) {
411 case IBCS2_SIG_BLOCK:
412 SIGSETOR(p->p_sigmask, bss);
413 SIG_CANTMASK(p->p_sigmask);
416 case IBCS2_SIG_UNBLOCK:
417 SIGSETNAND(p->p_sigmask, bss);
420 case IBCS2_SIG_SETMASK:
422 SIG_CANTMASK(p->p_sigmask);
436 ibcs2_sigpending(p, uap)
437 register struct proc *p;
438 struct ibcs2_sigpending_args *uap;
444 SIGSETAND(bss, p->p_sigmask);
445 bsd_to_ibcs2_sigset(&bss, &iss);
447 return copyout(&iss, SCARG(uap, mask), sizeof(iss));
451 ibcs2_sigsuspend(p, uap)
452 register struct proc *p;
453 struct ibcs2_sigsuspend_args *uap;
457 struct sigsuspend_args sa;
460 if ((error = copyin(SCARG(uap, mask), &sss, sizeof(sss))) != 0)
463 ibcs2_to_bsd_sigset(&sss, &bss);
464 SCARG(&sa, sigmask) = &bss;
465 return sigsuspend(p, &sa);
470 register struct proc *p;
471 struct ibcs2_pause_args *uap;
474 struct sigsuspend_args sa;
477 SCARG(&sa, sigmask) = &mask;
478 return sigsuspend(p, &sa);
483 register struct proc *p;
484 struct ibcs2_kill_args *uap;
488 SCARG(&ka, pid) = SCARG(uap, pid);
489 SCARG(&ka, signum) = ibcs2_to_bsd_sig[_SIG_IDX(SCARG(uap, signo))];