2 * Copyright (c) 1994-1995 Søren Schmidt
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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
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/compat/linux/linux_signal.c,v 1.23.2.3 2001/11/05 19:08:23 marcel Exp $
29 * $DragonFly: src/sys/emulation/linux/linux_signal.c,v 1.6 2003/08/07 21:17:18 dillon Exp $
32 #include <sys/param.h>
33 #include <sys/systm.h>
36 #include <sys/signalvar.h>
37 #include <sys/sysproto.h>
39 #include <emulation/linux/machine/linux.h>
40 #include <emulation/linux/machine/linux_proto.h>
41 #include "linux_signal.h"
42 #include "linux_util.h"
45 linux_to_bsd_sigset(l_sigset_t *lss, sigset_t *bss)
50 bss->__bits[0] = lss->__bits[0] & ~((1U << LINUX_SIGTBLSZ) - 1);
51 bss->__bits[1] = lss->__bits[1];
52 for (l = 1; l <= LINUX_SIGTBLSZ; l++) {
53 if (LINUX_SIGISMEMBER(*lss, l)) {
57 b = linux_to_bsd_signal[_SIG_IDX(l)];
66 bsd_to_linux_sigset(sigset_t *bss, l_sigset_t *lss)
70 LINUX_SIGEMPTYSET(*lss);
71 lss->__bits[0] = bss->__bits[0] & ~((1U << LINUX_SIGTBLSZ) - 1);
72 lss->__bits[1] = bss->__bits[1];
73 for (b = 1; b <= LINUX_SIGTBLSZ; b++) {
74 if (SIGISMEMBER(*bss, b)) {
78 l = bsd_to_linux_signal[_SIG_IDX(b)];
81 LINUX_SIGADDSET(*lss, l);
87 linux_to_bsd_sigaction(l_sigaction_t *lsa, struct sigaction *bsa)
90 linux_to_bsd_sigset(&lsa->lsa_mask, &bsa->sa_mask);
91 bsa->sa_handler = lsa->lsa_handler;
93 if (lsa->lsa_flags & LINUX_SA_NOCLDSTOP)
94 bsa->sa_flags |= SA_NOCLDSTOP;
95 if (lsa->lsa_flags & LINUX_SA_NOCLDWAIT)
96 bsa->sa_flags |= SA_NOCLDWAIT;
97 if (lsa->lsa_flags & LINUX_SA_SIGINFO)
98 bsa->sa_flags |= SA_SIGINFO;
99 if (lsa->lsa_flags & LINUX_SA_ONSTACK)
100 bsa->sa_flags |= SA_ONSTACK;
101 if (lsa->lsa_flags & LINUX_SA_RESTART)
102 bsa->sa_flags |= SA_RESTART;
103 if (lsa->lsa_flags & LINUX_SA_ONESHOT)
104 bsa->sa_flags |= SA_RESETHAND;
105 if (lsa->lsa_flags & LINUX_SA_NOMASK)
106 bsa->sa_flags |= SA_NODEFER;
110 bsd_to_linux_sigaction(struct sigaction *bsa, l_sigaction_t *lsa)
113 bsd_to_linux_sigset(&bsa->sa_mask, &lsa->lsa_mask);
114 lsa->lsa_handler = bsa->sa_handler;
115 lsa->lsa_restorer = NULL; /* unsupported */
117 if (bsa->sa_flags & SA_NOCLDSTOP)
118 lsa->lsa_flags |= LINUX_SA_NOCLDSTOP;
119 if (bsa->sa_flags & SA_NOCLDWAIT)
120 lsa->lsa_flags |= LINUX_SA_NOCLDWAIT;
121 if (bsa->sa_flags & SA_SIGINFO)
122 lsa->lsa_flags |= LINUX_SA_SIGINFO;
123 if (bsa->sa_flags & SA_ONSTACK)
124 lsa->lsa_flags |= LINUX_SA_ONSTACK;
125 if (bsa->sa_flags & SA_RESTART)
126 lsa->lsa_flags |= LINUX_SA_RESTART;
127 if (bsa->sa_flags & SA_RESETHAND)
128 lsa->lsa_flags |= LINUX_SA_ONESHOT;
129 if (bsa->sa_flags & SA_NODEFER)
130 lsa->lsa_flags |= LINUX_SA_NOMASK;
134 linux_do_sigaction(int linux_sig, l_sigaction_t *linux_nsa,
135 l_sigaction_t *linux_osa, int *res)
137 struct sigaction *nsa, *osa;
138 struct sigaction_args sa_args;
140 caddr_t sg = stackgap_init();
142 if (linux_sig <= 0 || linux_sig > LINUX_NSIG)
145 if (linux_osa != NULL)
146 osa = stackgap_alloc(&sg, sizeof(struct sigaction));
150 if (linux_nsa != NULL) {
151 nsa = stackgap_alloc(&sg, sizeof(struct sigaction));
152 linux_to_bsd_sigaction(linux_nsa, nsa);
158 if (linux_sig <= LINUX_SIGTBLSZ)
159 sa_args.sig = linux_to_bsd_signal[_SIG_IDX(linux_sig)];
162 sa_args.sig = linux_sig;
166 sa_args.sysmsg_result = 0;
167 error = sigaction(&sa_args);
170 *res = sa_args.sysmsg_result;
172 if (linux_osa != NULL)
173 bsd_to_linux_sigaction(osa, linux_osa);
181 linux_signal(struct linux_signal_args *args)
183 l_sigaction_t nsa, osa;
189 printf(ARGS(signal, "%d, %p"),
190 args->sig, (void *)args->handler);
193 nsa.lsa_handler = args->handler;
194 nsa.lsa_flags = LINUX_SA_ONESHOT | LINUX_SA_NOMASK;
195 LINUX_SIGEMPTYSET(nsa.lsa_mask);
197 error = linux_do_sigaction(args->sig, &nsa, &osa, &dummy);
198 args->sysmsg_result = (int)osa.lsa_handler;
202 #endif /*!__alpha__*/
205 linux_rt_sigaction(struct linux_rt_sigaction_args *args)
207 l_sigaction_t nsa, osa;
211 if (ldebug(rt_sigaction))
212 printf(ARGS(rt_sigaction, "%ld, %p, %p, %ld"),
213 (long)args->sig, (void *)args->act,
214 (void *)args->oact, (long)args->sigsetsize);
217 if (args->sigsetsize != sizeof(l_sigset_t))
220 if (args->act != NULL) {
221 error = copyin(args->act, &nsa, sizeof(l_sigaction_t));
226 error = linux_do_sigaction(args->sig,
227 args->act ? &nsa : NULL,
228 args->oact ? &osa : NULL,
229 &args->sysmsg_result);
231 if (args->oact != NULL && !error) {
232 error = copyout(&osa, args->oact, sizeof(l_sigaction_t));
239 linux_do_sigprocmask(int how, l_sigset_t *new, l_sigset_t *old, int *res)
241 struct proc *p = curproc;
249 bsd_to_linux_sigset(&p->p_sigmask, old);
252 linux_to_bsd_sigset(new, &mask);
255 case LINUX_SIG_BLOCK:
256 SIGSETOR(p->p_sigmask, mask);
257 SIG_CANTMASK(p->p_sigmask);
259 case LINUX_SIG_UNBLOCK:
260 SIGSETNAND(p->p_sigmask, mask);
262 case LINUX_SIG_SETMASK:
264 SIG_CANTMASK(p->p_sigmask);
277 linux_sigprocmask(struct linux_sigprocmask_args *args)
280 l_sigset_t set, oset;
284 if (ldebug(sigprocmask))
285 printf(ARGS(sigprocmask, "%d, *, *"), args->how);
288 if (args->mask != NULL) {
289 error = copyin(args->mask, &mask, sizeof(l_osigset_t));
292 LINUX_SIGEMPTYSET(set);
293 set.__bits[0] = mask;
296 error = linux_do_sigprocmask(args->how,
297 args->mask ? &set : NULL,
298 args->omask ? &oset : NULL,
299 &args->sysmsg_result);
301 if (args->omask != NULL && !error) {
302 mask = oset.__bits[0];
303 error = copyout(&mask, args->omask, sizeof(l_osigset_t));
308 #endif /*!__alpha__*/
311 linux_rt_sigprocmask(struct linux_rt_sigprocmask_args *args)
313 l_sigset_t set, oset;
317 if (ldebug(rt_sigprocmask))
318 printf(ARGS(rt_sigprocmask, "%d, %p, %p, %ld"),
319 args->how, (void *)args->mask,
320 (void *)args->omask, (long)args->sigsetsize);
323 if (args->sigsetsize != sizeof(l_sigset_t))
326 if (args->mask != NULL) {
327 error = copyin(args->mask, &set, sizeof(l_sigset_t));
332 error = linux_do_sigprocmask(args->how,
333 args->mask ? &set : NULL,
334 args->omask ? &oset : NULL,
335 &args->sysmsg_result);
337 if (args->omask != NULL && !error) {
338 error = copyout(&oset, args->omask, sizeof(l_sigset_t));
346 linux_sgetmask(struct linux_sgetmask_args *args)
348 struct proc *p = curproc;
352 if (ldebug(sgetmask))
353 printf(ARGS(sgetmask, ""));
356 bsd_to_linux_sigset(&p->p_sigmask, &mask);
357 args->sysmsg_result = mask.__bits[0];
362 linux_ssetmask(struct linux_ssetmask_args *args)
364 struct proc *p = curproc;
369 if (ldebug(ssetmask))
370 printf(ARGS(ssetmask, "%08lx"), (unsigned long)args->mask);
373 bsd_to_linux_sigset(&p->p_sigmask, &lset);
374 args->sysmsg_result = lset.__bits[0];
375 LINUX_SIGEMPTYSET(lset);
376 lset.__bits[0] = args->mask;
377 linux_to_bsd_sigset(&lset, &bset);
379 SIG_CANTMASK(p->p_sigmask);
384 linux_sigpending(struct linux_sigpending_args *args)
386 struct proc *p = curproc;
392 if (ldebug(sigpending))
393 printf(ARGS(sigpending, "*"));
397 SIGSETAND(bset, p->p_sigmask);
398 bsd_to_linux_sigset(&bset, &lset);
399 mask = lset.__bits[0];
400 return (copyout(&mask, args->mask, sizeof(mask)));
402 #endif /*!__alpha__*/
405 linux_kill(struct linux_kill_args *args)
412 printf(ARGS(kill, "%d, %d"), args->pid, args->signum);
416 * Allow signal 0 as a means to check for privileges
418 if (args->signum < 0 || args->signum > LINUX_NSIG)
422 if (args->signum > 0 && args->signum <= LINUX_SIGTBLSZ)
423 ka.signum = linux_to_bsd_signal[_SIG_IDX(args->signum)];
426 ka.signum = args->signum;
429 ka.sysmsg_result = 0;
431 args->sysmsg_result = ka.sysmsg_result;