260 lines
6.9 KiB
C
260 lines
6.9 KiB
C
/*-
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* Copyright (c) 1994-1995 Søren Schmidt
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software withough specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id: linux_signal.c,v 1.1 1995/06/25 17:32:40 sos Exp $
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/sysproto.h>
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#include <sys/proc.h>
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#include <sys/exec.h>
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#include <sys/signal.h>
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#include <sys/signalvar.h>
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#include <i386/linux/linux.h>
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#include <i386/linux/sysproto.h>
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#define DONTMASK (sigmask(SIGKILL)|sigmask(SIGSTOP)|sigmask(SIGCHLD))
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static sigset_t
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linux_to_bsd_sigmask(linux_sigset_t mask) {
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int i;
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sigset_t new = 0;
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for (i = 1; i <= LINUX_NSIG; i++)
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if (mask & (1 << i-1))
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new |= (1 << (linux_to_bsd_signal[i]-1));
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return new;
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}
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static linux_sigset_t
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bsd_to_linux_sigmask(sigset_t mask) {
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int i;
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sigset_t new = 0;
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for (i = 1; i <= NSIG; i++)
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if (mask & (1 << i-1))
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new |= (1 << (bsd_to_linux_signal[i]-1));
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return new;
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}
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struct linux_sigaction_args {
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int sig;
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linux_sigaction_t *nsa;
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linux_sigaction_t *osa;
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};
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int
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linux_sigaction(struct proc *p, struct linux_sigaction_args *args, int *retval)
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{
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linux_sigaction_t linux_sa;
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struct sigaction *nsa = NULL, *osa = NULL, bsd_sa;
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struct sigaction_args {
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int sig;
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struct sigaction *nsa;
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struct sigaction *osa;
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} sa;
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int error;
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#ifdef DEBUG
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printf("Linux-emul(%d): sigaction(%d, *, *)\n", p->p_pid, args->sig);
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#endif
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if (args->osa)
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osa = (struct sigaction *)ua_alloc_init(sizeof(struct sigaction));
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if (args->nsa) {
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nsa = (struct sigaction *)ua_alloc(sizeof(struct sigaction));
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if (error = copyin(args->nsa, &linux_sa, sizeof(linux_sigaction_t)))
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return error;
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bsd_sa.sa_mask = linux_to_bsd_sigmask(linux_sa.sa_mask);
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bsd_sa.sa_handler = linux_sa.sa_handler;
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bsd_sa.sa_flags = 0;
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if (linux_sa.sa_flags & LINUX_SA_NOCLDSTOP)
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bsd_sa.sa_flags |= SA_NOCLDSTOP;
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if (linux_sa.sa_flags & LINUX_SA_ONSTACK)
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bsd_sa.sa_flags |= SA_ONSTACK;
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if (linux_sa.sa_flags & LINUX_SA_RESTART)
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bsd_sa.sa_flags |= SA_RESTART;
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if (error = copyout(&bsd_sa, nsa, sizeof(struct sigaction)))
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return error;
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}
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sa.sig = linux_to_bsd_signal[args->sig];
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sa.nsa = nsa;
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sa.osa = osa;
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if ((error = sigaction(p, &sa, retval)))
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return error;
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if (args->osa) {
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if (error = copyin(osa, &bsd_sa, sizeof(struct sigaction)))
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return error;
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linux_sa.sa_handler = bsd_sa.sa_handler;
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linux_sa.sa_restorer = NULL;
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linux_sa.sa_mask = bsd_to_linux_sigmask(bsd_sa.sa_mask);
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linux_sa.sa_flags = 0;
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if (bsd_sa.sa_flags & SA_NOCLDSTOP)
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linux_sa.sa_flags |= LINUX_SA_NOCLDSTOP;
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if (bsd_sa.sa_flags & SA_ONSTACK)
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linux_sa.sa_flags |= LINUX_SA_ONSTACK;
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if (bsd_sa.sa_flags & SA_RESTART)
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linux_sa.sa_flags |= LINUX_SA_RESTART;
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if (error = copyout(&linux_sa, args->osa, sizeof(linux_sigaction_t)))
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return error;
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}
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return 0;
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}
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struct linux_sigprocmask_args {
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int how;
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linux_sigset_t *mask;
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linux_sigset_t *omask;
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};
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int
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linux_sigprocmask(struct proc *p, struct linux_sigprocmask_args *args,
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int *retval)
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{
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int error, s;
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sigset_t mask;
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sigset_t omask;
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#ifdef DEBUG
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printf("Linux-emul(%d): sigprocmask(%d, *, *)\n", p->p_pid, args->how);
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#endif
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if (args->omask != NULL) {
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omask = bsd_to_linux_sigmask(p->p_sigmask);
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if (error = copyout(&omask, args->omask, sizeof(sigset_t)))
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return error;
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}
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if (!(args->mask))
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return 0;
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if (error = copyin(args->mask, &mask, sizeof(linux_sigset_t)))
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return error;
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mask = linux_to_bsd_sigmask(mask);
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s = splhigh();
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switch (args->how) {
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case LINUX_SIG_BLOCK:
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p->p_sigmask |= (mask & ~DONTMASK);
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break;
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case LINUX_SIG_UNBLOCK:
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p->p_sigmask &= ~mask;
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break;
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case LINUX_SIG_SETMASK:
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p->p_sigmask = (mask & ~DONTMASK);
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break;
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default:
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error = EINVAL;
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break;
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}
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splx(s);
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return error;
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}
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int
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linux_siggetmask(struct proc *p, void *args, int *retval)
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{
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#ifdef DEBUG
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printf("Linux-emul(%d): siggetmask()\n", p->p_pid);
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#endif
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*retval = bsd_to_linux_sigmask(p->p_sigmask);
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return 0;
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}
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struct linux_sigsetmask_args {
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linux_sigset_t mask;
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};
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int
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linux_sigsetmask(struct proc *p, struct linux_sigsetmask_args *args,int *retval)
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{
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int s;
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#ifdef DEBUG
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printf("Linux-emul(%d): sigsetmask(%08x)\n", p->p_pid, args->mask);
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#endif
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s = splhigh();
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p->p_sigmask = (linux_to_bsd_sigmask(args->mask) & ~DONTMASK);
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splx(s);
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*retval = bsd_to_linux_sigmask(p->p_sigmask);
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return 0;
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}
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struct linux_sigpending_args {
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linux_sigset_t *mask;
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};
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int
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linux_sigpending(struct proc *p, struct linux_sigpending_args *args,int *retval)
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{
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linux_sigset_t linux_sig;
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#ifdef DEBUG
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printf("Linux-emul(%d): sigpending(*)\n", p->p_pid);
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#endif
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linux_sig = bsd_to_linux_sigmask(p->p_siglist & p->p_sigmask);
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return copyout(&linux_sig, args->mask, sizeof(linux_sig));
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}
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struct linux_sigsuspend_args {
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linux_sigset_t mask;
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};
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int
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linux_sigsuspend(struct proc *p, struct linux_sigsuspend_args *args,int *retval)
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{
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sigset_t tmp;
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#ifdef DEBUG
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printf("Linux-emul(%d): sigsuspend(%08x)\n", p->p_pid, args->mask);
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#endif
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tmp = linux_to_bsd_sigmask(args->mask);
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return sigsuspend(p, &tmp , retval);
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}
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struct linux_kill_args {
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int pid;
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int signum;
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};
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int
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linux_kill(struct proc *p, struct linux_kill_args *args, int *retval)
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{
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struct {
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int pid;
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int signum;
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} tmp;
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#ifdef DEBUG
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printf("Linux-emul(%d): kill(%d, %d)\n",
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p->p_pid, args->pid, args->signum);
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#endif
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tmp.pid = args->pid;
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tmp.signum = linux_to_bsd_signal[args->signum];
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return kill(p, &tmp, retval);
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}
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