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/*-
* Copyright (c) 1994-1995 Søren Schmidt
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer
* in this position and unchanged.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software withough specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $Id: linux_signal.c,v 1.2 1995/06/07 21:27:57 sos Exp $
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/exec.h>
#include <sys/signal.h>
#include <sys/signalvar.h>
#include <vm/vm.h>
#include <i386/linux/linux.h>
#define DONTMASK (sigmask(SIGKILL)|sigmask(SIGSTOP)|sigmask(SIGCHLD))
static sigset_t
linux_to_bsd_sigmask(linux_sigset_t mask) {
int i;
sigset_t new = 0;
for (i = 1; i <= LINUX_NSIG; i++)
if (mask & (1 << i-1))
new |= (1 << (linux_to_bsd_signal[i]-1));
return new;
}
static linux_sigset_t
bsd_to_linux_sigmask(sigset_t mask) {
int i;
sigset_t new = 0;
for (i = 1; i <= NSIG; i++)
if (mask & (1 << i-1))
new |= (1 << (bsd_to_linux_signal[i]-1));
return new;
}
struct linux_sigaction_args {
int sig;
linux_sigaction_t *nsa;
linux_sigaction_t *osa;
};
int
linux_sigaction(struct proc *p, struct linux_sigaction_args *args, int *retval)
{
linux_sigaction_t linux_sa;
struct sigaction *nsa = NULL, *osa = NULL, bsd_sa;
struct sigaction_args {
int sig;
struct sigaction *nsa;
struct sigaction *osa;
} sa;
int error;
#ifdef DEBUG
printf("Linux-emul(%d): sigaction(%d, *, *)\n", p->p_pid, args->sig);
#endif
if (args->osa)
osa = (struct sigaction *)ua_alloc_init(sizeof(struct sigaction));
if (args->nsa) {
nsa = (struct sigaction *)ua_alloc(sizeof(struct sigaction));
if (error = copyin(args->nsa, &linux_sa, sizeof(linux_sigaction_t)))
return error;
bsd_sa.sa_mask = linux_to_bsd_sigmask(linux_sa.sa_mask);
bsd_sa.sa_handler = linux_sa.sa_handler;
bsd_sa.sa_flags = 0;
if (linux_sa.sa_flags & LINUX_SA_NOCLDSTOP)
bsd_sa.sa_flags |= SA_NOCLDSTOP;
if (linux_sa.sa_flags & LINUX_SA_ONSTACK)
bsd_sa.sa_flags |= SA_ONSTACK;
if (linux_sa.sa_flags & LINUX_SA_RESTART)
bsd_sa.sa_flags |= SA_RESTART;
if (error = copyout(&bsd_sa, nsa, sizeof(struct sigaction)))
return error;
}
sa.sig = linux_to_bsd_signal[args->sig];
sa.nsa = nsa;
sa.osa = osa;
if ((error = sigaction(p, &sa, retval)))
return error;
if (args->osa) {
if (error = copyin(osa, &bsd_sa, sizeof(struct sigaction)))
return error;
linux_sa.sa_handler = bsd_sa.sa_handler;
linux_sa.sa_restorer = NULL;
linux_sa.sa_mask = bsd_to_linux_sigmask(bsd_sa.sa_mask);
linux_sa.sa_flags = 0;
if (bsd_sa.sa_flags & SA_NOCLDSTOP)
linux_sa.sa_flags |= LINUX_SA_NOCLDSTOP;
if (bsd_sa.sa_flags & SA_ONSTACK)
linux_sa.sa_flags |= LINUX_SA_ONSTACK;
if (bsd_sa.sa_flags & SA_RESTART)
linux_sa.sa_flags |= LINUX_SA_RESTART;
if (error = copyout(&linux_sa, args->osa, sizeof(linux_sigaction_t)))
return error;
}
return 0;
}
struct linux_sigprocmask_args {
int how;
linux_sigset_t *mask;
linux_sigset_t *omask;
};
int
linux_sigprocmask(struct proc *p, struct linux_sigprocmask_args *args,
int *retval)
{
int error, s;
sigset_t mask;
sigset_t omask;
#ifdef DEBUG
printf("Linux-emul(%d): sigprocmask(%d, *, *)\n", p->p_pid, args->how);
#endif
if (args->omask != NULL) {
omask = bsd_to_linux_sigmask(p->p_sigmask);
if (error = copyout(&omask, args->omask, sizeof(sigset_t)))
return error;
}
if (!(args->mask))
return 0;
if (error = copyin(args->mask, &mask, sizeof(linux_sigset_t)))
return error;
mask = linux_to_bsd_sigmask(mask);
s = splhigh();
switch (args->how) {
case LINUX_SIG_BLOCK:
p->p_sigmask |= (mask & ~DONTMASK);
break;
case LINUX_SIG_UNBLOCK:
p->p_sigmask &= ~mask;
break;
case LINUX_SIG_SETMASK:
p->p_sigmask = (mask & ~DONTMASK);
break;
default:
error = EINVAL;
break;
}
splx(s);
return error;
}
int
linux_siggetmask(struct proc *p, void *args, int *retval)
{
#ifdef DEBUG
printf("Linux-emul(%d): siggetmask()\n", p->p_pid);
#endif
*retval = bsd_to_linux_sigmask(p->p_sigmask);
return 0;
}
struct linux_sigsetmask_args {
linux_sigset_t mask;
};
int
linux_sigsetmask(struct proc *p, struct linux_sigsetmask_args *args,int *retval)
{
int s;
#ifdef DEBUG
printf("Linux-emul(%d): sigsetmask(%08x)\n", p->p_pid, args->mask);
#endif
s = splhigh();
p->p_sigmask = (linux_to_bsd_sigmask(args->mask) & ~DONTMASK);
splx(s);
*retval = bsd_to_linux_sigmask(p->p_sigmask);
return 0;
}
struct linux_sigpending_args {
linux_sigset_t *mask;
};
int
linux_sigpending(struct proc *p, struct linux_sigpending_args *args,int *retval)
{
linux_sigset_t linux_sig;
#ifdef DEBUG
printf("Linux-emul(%d): sigpending(*)\n", p->p_pid);
#endif
linux_sig = bsd_to_linux_sigmask(p->p_siglist & p->p_sigmask);
return copyout(&linux_sig, args->mask, sizeof(linux_sig));
}
struct linux_sigsuspend_args {
linux_sigset_t mask;
};
int
linux_sigsuspend(struct proc *p, struct linux_sigsuspend_args *args,int *retval)
{
sigset_t tmp;
#ifdef DEBUG
printf("Linux-emul(%d): sigsuspend(%08x)\n", p->p_pid, args->mask);
#endif
tmp = linux_to_bsd_sigmask(args->mask);
return sigsuspend(p, &tmp , retval);
}
struct linux_kill_args {
int pid;
int signum;
};
int
linux_kill(struct proc *p, struct linux_kill_args *args, int *retval)
{
struct {
int pid;
int signum;
} tmp;
#ifdef DEBUG
printf("Linux-emul(%d): kill(%d, %d)\n",
p->p_pid, args->pid, args->signum);
#endif
tmp.pid = args->pid;
tmp.signum = linux_to_bsd_signal[args->signum];
return kill(p, &tmp, retval);
}
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