cb226aaa62
it in struct proc instead. This fixes a boatload of compiler warning, and removes a lot of cruft from the sources. I have not removed the /*ARGSUSED*/, they will require some looking at. libkvm, ps and other userland struct proc frobbing programs will need recompiled.
312 lines
8.2 KiB
C
312 lines
8.2 KiB
C
/*-
|
|
* 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 1.9 1997/07/20 16:06:03 bde Exp $
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/sysproto.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/signalvar.h>
|
|
|
|
#include <i386/linux/linux.h>
|
|
#include <i386/linux/linux_proto.h>
|
|
#include <i386/linux/linux_util.h>
|
|
|
|
static sigset_t
|
|
linux_to_bsd_sigset(linux_sigset_t mask) {
|
|
int b, l;
|
|
sigset_t new = 0;
|
|
|
|
for (l = 1; l <= LINUX_NSIG; l++) {
|
|
if (mask & (1 << (l - 1))) {
|
|
if ((b = linux_to_bsd_signal[l]))
|
|
new |= (1 << (b - 1));
|
|
}
|
|
}
|
|
return new;
|
|
}
|
|
|
|
static linux_sigset_t
|
|
bsd_to_linux_sigset(sigset_t mask) {
|
|
int b, l;
|
|
sigset_t new = 0;
|
|
|
|
for (b = 1; b <= NSIG; b++) {
|
|
if (mask & (1 << (b - 1))) {
|
|
if ((l = bsd_to_linux_signal[b]))
|
|
new |= (1 << (l - 1));
|
|
}
|
|
}
|
|
return new;
|
|
}
|
|
|
|
static void
|
|
linux_to_bsd_sigaction(linux_sigaction_t *lsa, struct sigaction *bsa)
|
|
{
|
|
bsa->sa_mask = linux_to_bsd_sigset(lsa->sa_mask);
|
|
bsa->sa_handler = lsa->sa_handler;
|
|
bsa->sa_flags = 0;
|
|
if (lsa->sa_flags & LINUX_SA_NOCLDSTOP)
|
|
bsa->sa_flags |= SA_NOCLDSTOP;
|
|
if (lsa->sa_flags & LINUX_SA_ONSTACK)
|
|
bsa->sa_flags |= SA_ONSTACK;
|
|
if (lsa->sa_flags & LINUX_SA_RESTART)
|
|
bsa->sa_flags |= SA_RESTART;
|
|
if (lsa->sa_flags & LINUX_SA_ONESHOT)
|
|
bsa->sa_flags |= SA_RESETHAND;
|
|
if (lsa->sa_flags & LINUX_SA_NOMASK)
|
|
bsa->sa_flags |= SA_NODEFER;
|
|
}
|
|
|
|
static void
|
|
bsd_to_linux_sigaction(struct sigaction *bsa, linux_sigaction_t *lsa)
|
|
{
|
|
lsa->sa_handler = bsa->sa_handler;
|
|
lsa->sa_restorer = NULL; /* unsupported */
|
|
lsa->sa_mask = bsd_to_linux_sigset(bsa->sa_mask);
|
|
lsa->sa_flags = 0;
|
|
if (bsa->sa_flags & SA_NOCLDSTOP)
|
|
lsa->sa_flags |= LINUX_SA_NOCLDSTOP;
|
|
if (bsa->sa_flags & SA_ONSTACK)
|
|
lsa->sa_flags |= LINUX_SA_ONSTACK;
|
|
if (bsa->sa_flags & SA_RESTART)
|
|
lsa->sa_flags |= LINUX_SA_RESTART;
|
|
if (bsa->sa_flags & SA_RESETHAND)
|
|
lsa->sa_flags |= LINUX_SA_ONESHOT;
|
|
if (bsa->sa_flags & SA_NODEFER)
|
|
lsa->sa_flags |= LINUX_SA_NOMASK;
|
|
}
|
|
|
|
int
|
|
linux_sigaction(struct proc *p, struct linux_sigaction_args *args)
|
|
{
|
|
linux_sigaction_t linux_sa;
|
|
struct sigaction *nsa = NULL, *osa = NULL, bsd_sa;
|
|
struct sigaction_args sa;
|
|
int error;
|
|
caddr_t sg = stackgap_init();
|
|
|
|
#ifdef DEBUG
|
|
printf("Linux-emul(%d): sigaction(%d, %08x, %08x)\n", p->p_pid, args->sig,
|
|
args->nsa, args->osa);
|
|
#endif
|
|
|
|
if (args->osa)
|
|
osa = (struct sigaction *)stackgap_alloc(&sg, sizeof(struct sigaction));
|
|
|
|
if (args->nsa) {
|
|
nsa = (struct sigaction *)stackgap_alloc(&sg, sizeof(struct sigaction));
|
|
if (error = copyin(args->nsa, &linux_sa, sizeof(linux_sigaction_t)))
|
|
return error;
|
|
linux_to_bsd_sigaction(&linux_sa, &bsd_sa);
|
|
if (error = copyout(&bsd_sa, nsa, sizeof(struct sigaction)))
|
|
return error;
|
|
}
|
|
sa.signum = linux_to_bsd_signal[args->sig];
|
|
sa.nsa = nsa;
|
|
sa.osa = osa;
|
|
if ((error = sigaction(p, &sa)))
|
|
return error;
|
|
|
|
if (args->osa) {
|
|
if (error = copyin(osa, &bsd_sa, sizeof(struct sigaction)))
|
|
return error;
|
|
bsd_to_linux_sigaction(&bsd_sa, &linux_sa);
|
|
if (error = copyout(&linux_sa, args->osa, sizeof(linux_sigaction_t)))
|
|
return error;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
linux_signal(struct proc *p, struct linux_signal_args *args)
|
|
{
|
|
caddr_t sg;
|
|
struct sigaction_args sa_args;
|
|
struct sigaction *osa, *nsa, tmpsa;
|
|
int error;
|
|
|
|
#ifdef DEBUG
|
|
printf("Linux-emul(%d): signal(%d, %08x)\n", p->p_pid,
|
|
args->sig, args->handler);
|
|
#endif
|
|
sg = stackgap_init();
|
|
nsa = stackgap_alloc(&sg, sizeof *nsa);
|
|
osa = stackgap_alloc(&sg, sizeof *osa);
|
|
|
|
tmpsa.sa_handler = args->handler;
|
|
tmpsa.sa_mask = (sigset_t) 0;
|
|
tmpsa.sa_flags = SA_RESETHAND | SA_NODEFER;
|
|
if ((error = copyout(&tmpsa, nsa, sizeof tmpsa)))
|
|
return error;
|
|
|
|
sa_args.signum = linux_to_bsd_signal[args->sig];
|
|
sa_args.osa = osa;
|
|
sa_args.nsa = nsa;
|
|
if ((error = sigaction(p, &sa_args)))
|
|
return error;
|
|
|
|
if ((error = copyin(osa, &tmpsa, sizeof *osa)))
|
|
return error;
|
|
|
|
p->p_retval[0] = (int)tmpsa.sa_handler;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int
|
|
linux_sigprocmask(struct proc *p, struct linux_sigprocmask_args *args)
|
|
{
|
|
int error, s;
|
|
sigset_t mask;
|
|
sigset_t omask;
|
|
|
|
#ifdef DEBUG
|
|
printf("Linux-emul(%d): sigprocmask(%d, *, *)\n", p->p_pid, args->how);
|
|
#endif
|
|
|
|
p->p_retval[0] = 0;
|
|
|
|
if (args->omask != NULL) {
|
|
omask = bsd_to_linux_sigset(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_sigset(mask);
|
|
s = splhigh();
|
|
switch (args->how) {
|
|
case LINUX_SIG_BLOCK:
|
|
p->p_sigmask |= (mask & ~sigcantmask);
|
|
break;
|
|
case LINUX_SIG_UNBLOCK:
|
|
p->p_sigmask &= ~mask;
|
|
break;
|
|
case LINUX_SIG_SETMASK:
|
|
p->p_sigmask = (mask & ~sigcantmask);
|
|
break;
|
|
default:
|
|
error = EINVAL;
|
|
break;
|
|
}
|
|
splx(s);
|
|
return error;
|
|
}
|
|
|
|
int
|
|
linux_siggetmask(struct proc *p, struct linux_siggetmask_args *args)
|
|
{
|
|
#ifdef DEBUG
|
|
printf("Linux-emul(%d): siggetmask()\n", p->p_pid);
|
|
#endif
|
|
p->p_retval[0] = bsd_to_linux_sigset(p->p_sigmask);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
linux_sigsetmask(struct proc *p, struct linux_sigsetmask_args *args)
|
|
{
|
|
int s;
|
|
sigset_t mask;
|
|
|
|
#ifdef DEBUG
|
|
printf("Linux-emul(%d): sigsetmask(%08x)\n", p->p_pid, args->mask);
|
|
#endif
|
|
p->p_retval[0] = bsd_to_linux_sigset(p->p_sigmask);
|
|
|
|
mask = linux_to_bsd_sigset(args->mask);
|
|
s = splhigh();
|
|
p->p_sigmask = mask & ~sigcantmask;
|
|
splx(s);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
linux_sigpending(struct proc *p, struct linux_sigpending_args *args)
|
|
{
|
|
linux_sigset_t linux_sig;
|
|
|
|
#ifdef DEBUG
|
|
printf("Linux-emul(%d): sigpending(*)\n", p->p_pid);
|
|
#endif
|
|
linux_sig = bsd_to_linux_sigset(p->p_siglist & p->p_sigmask);
|
|
return copyout(&linux_sig, args->mask, sizeof(linux_sig));
|
|
}
|
|
|
|
/*
|
|
* Linux has two extra args, restart and oldmask. We dont use these,
|
|
* but it seems that "restart" is actually a context pointer that
|
|
* enables the signal to happen with a different register set.
|
|
*/
|
|
int
|
|
linux_sigsuspend(struct proc *p, struct linux_sigsuspend_args *args)
|
|
{
|
|
struct sigsuspend_args tmp;
|
|
|
|
#ifdef DEBUG
|
|
printf("Linux-emul(%d): sigsuspend(%08x)\n", p->p_pid, args->mask);
|
|
#endif
|
|
tmp.mask = linux_to_bsd_sigset(args->mask);
|
|
return sigsuspend(p, &tmp);
|
|
}
|
|
|
|
int
|
|
linux_pause(struct proc *p, struct linux_pause_args *args)
|
|
{
|
|
struct sigsuspend_args tmp;
|
|
|
|
#ifdef DEBUG
|
|
printf("Linux-emul(%d): pause()\n", p->p_pid);
|
|
#endif
|
|
tmp.mask = p->p_sigmask;
|
|
return sigsuspend(p, &tmp);
|
|
}
|
|
|
|
int
|
|
linux_kill(struct proc *p, struct linux_kill_args *args)
|
|
{
|
|
struct kill_args /* {
|
|
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);
|
|
}
|