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freebsd/sys/i386/ibcs2/ibcs2_signal.c
Søren Schmidt 69b770e238 iBCS2 emulator core files.
This is the main files for the iBCS2 emulator. It can be use
compiled into the kernel by using:

options		IBCS2
options 	COMPAT_IBCS2

or as a lkm module using:

options		COMPAT_IBCS2

and then loading it via the ibcs2 script in /usr/bin

REMEMBER: this code is still experimental ! NO WARRENTY !

Submitted by:	sef@kithrup.com, mostyn@mrl.com, sos@kmd-ac.dk
1994-10-14 08:53:16 +00:00

463 lines
12 KiB
C

/*-
* Copyright (c) 1994 Sean Eric Fagan
* Copyright (c) 1994 Søren Schmidt
* All rights reserved.
*
* Copyright (c) 1982, 1986, 1989, 1991 Regents of the University of California.
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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: ibcs2_signal.c,v 1.9 1994/10/12 19:38:03 sos Exp $
*/
#include <i386/ibcs2/ibcs2.h>
#include <sys/ioctl.h>
#include <sys/ioctl_compat.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/fcntl.h>
#include <sys/file.h>
#include <sys/filedesc.h>
#include <sys/namei.h>
#include <sys/mount.h>
#include <sys/proc.h>
#include <sys/resource.h>
#include <sys/resourcevar.h>
#include <sys/signal.h>
#include <sys/signalvar.h>
#include <sys/stat.h>
#include <sys/tty.h>
#include <sys/termios.h>
#include <sys/time.h>
#include <sys/times.h>
#include <sys/vnode.h>
#include <vm/vm.h>
#include <vm/vm_param.h>
#include <vm/vm_map.h>
#include <vm/vm_kern.h>
#define DONTMASK (sigmask(SIGKILL)|sigmask(SIGSTOP)|sigmask(SIGCHLD))
int bsd_to_ibcs2_signal[NSIG] = {
0, IBCS2_SIGHUP, IBCS2_SIGINT, IBCS2_SIGQUIT,
IBCS2_SIGILL, IBCS2_SIGTRAP, IBCS2_SIGABRT, IBCS2_SIGEMT,
IBCS2_SIGFPE, IBCS2_SIGKILL, IBCS2_SIGBUS, IBCS2_SIGSEGV,
IBCS2_SIGSYS, IBCS2_SIGPIPE, IBCS2_SIGALRM, IBCS2_SIGTERM,
IBCS2_SIGURG, IBCS2_SIGSTOP, IBCS2_SIGTSTP, IBCS2_SIGCONT,
IBCS2_SIGCHLD, IBCS2_SIGTTIN, IBCS2_SIGTTOU, IBCS2_SIGIO,
IBCS2_SIGGXCPU, IBCS2_SIGGXFSZ, IBCS2_SIGVTALRM, IBCS2_SIGPROF,
IBCS2_SIGWINCH, 0, IBCS2_SIGUSR1, IBCS2_SIGUSR2
};
int ibcs2_to_bsd_signal[IBCS2_NSIG] = {
0, SIGHUP, SIGINT, SIGQUIT, SIGILL, SIGTRAP, SIGABRT, SIGEMT,
SIGFPE, SIGKILL, SIGBUS, SIGSEGV, SIGSYS, SIGPIPE, SIGALRM, SIGTERM,
SIGUSR1, SIGUSR2, SIGCHLD, 0, SIGWINCH, SIGURG, SIGIO, SIGSTOP,
SIGTSTP, SIGCONT, SIGTTIN, SIGTTOU, SIGVTALRM, SIGPROF, SIGXCPU, SIGXFSZ
};
static char ibcs2_sig_name[IBCS2_NSIG][10] = {
"UNKNOWN", "SIGHUP", "SIGINT", "SIGQUIT", "SIGILL", "SIGTRAP",
"SIGABRT", "SIGEMT", "SIGFPE", "SIGKILL", "SIGBUS", "SIGSEGV",
"SIGSYS", "SIGPIPE", "SIGALRM", "SIGTERM", "SIGUSR1", "SIGUSR2",
"SIGCHLD", "SIGPWR", "SIGWINCH", "SIGURG", "SIGIO", "SIGSTOP",
"SIGTSTP", "SIGCONT", "SIGTTIN", "SIGTTOU", "SIGVTALRM",
"SIGPROF", "SIGXCPU", "SIGXFSZ"
};
/*#define LEGAL_SIG(x) \
(((x & IBCS2_SIGMASK) < IBCS2_NSIG) ? (x & IBCS2_SIGMASK) : (0))*/
int
LEGAL_SIG(int sig)
{
if ((sig & IBCS2_SIGMASK) > IBCS2_NSIG) {
printf("IBCS2: illegal ibcs2 signal %d(%08x)\n",
sig & IBCS2_SIGMASK, sig);
return 0;
}
else
return (sig & IBCS2_SIGMASK);
}
char *
ibcs2_sig_to_str(int sig)
{
if (sig > IBCS2_NSIG) {
printf("IBCS2: ibcs2 signal out of range (%d)\n", sig);
return ibcs2_sig_name[0];
}
else
return ibcs2_sig_name[sig];
}
static sig_t
ibcs2_to_bsd_sigfunc(ibcs2_sig_t func) {
switch ((int)func) {
case IBCS2_SIG_DFL:
return SIG_DFL;
case IBCS2_SIG_IGN:
return SIG_IGN;
case IBCS2_SIG_HOLD:
return SIG_HOLD;
default:
return func;
}
}
static ibcs2_sig_t
bsd_to_ibcs2_sigfunc(sig_t func) {
switch ((int)func) {
case SIG_DFL:
return IBCS2_SIG_DFL;
case SIG_IGN:
return IBCS2_SIG_IGN;
case SIG_CATCH:
printf("IBCS2: Oops - SIG_CATCH does not translate :-(\n");
return IBCS2_SIG_DFL;
case SIG_HOLD:
return IBCS2_SIG_HOLD;
default:
return func;
}
}
static sigset_t
ibcs2_to_bsd_sigmask(ibcs2_sigset_t mask) {
int i;
sigset_t new = 0;
for (i = 1; i < NSIG; i++)
if (mask & (1 << i-1))
new |= (1 << (ibcs2_to_bsd_signal[i]-1));
return new;
}
static ibcs2_sigset_t
bsd_to_ibcs2_sigmask(sigset_t mask) {
int i;
sigset_t new = 0;
for (i = 1; i < IBCS2_NSIG; i++)
if (mask & (1 << i-1))
new |= (1 << (bsd_to_ibcs2_signal[i]-1));
return new;
}
struct ibcs2_signal_args {
int signo;
ibcs2_sig_t func;
};
static int
ibcs2_sigset(struct proc *p, struct ibcs2_signal_args *args, int *retval)
{
struct sigaction tmp;
int sig_bsd = ibcs2_to_bsd_signal[LEGAL_SIG(args->signo)];
*retval = (int)bsd_to_ibcs2_sigfunc(p->p_sigacts->ps_sigact[sig_bsd]);
if (args->func == IBCS2_SIG_HOLD) {
(void) splhigh();
p->p_sigmask |= (sigmask(sig_bsd) &~ DONTMASK);
(void) spl0();
}
else {
tmp.sa_mask = sigmask(sig_bsd);
tmp.sa_handler = ibcs2_to_bsd_sigfunc(args->func);
tmp.sa_flags = 0;
setsigvec(p, sig_bsd, &tmp);
}
return 0;
}
static int
ibcs2_sighold(struct proc *p, struct ibcs2_signal_args *args, int *retval)
{
int sig_bsd = ibcs2_to_bsd_signal[LEGAL_SIG(args->signo)];
(void) splhigh();
*retval = p->p_sigmask;
p->p_sigmask |= (sigmask(sig_bsd) & ~DONTMASK);
(void) spl0();
return 0;
}
static int
ibcs2_sigrelse(struct proc *p, struct ibcs2_signal_args *args, int *retval)
{
int sig_bsd = ibcs2_to_bsd_signal[LEGAL_SIG(args->signo)];
(void) splhigh();
*retval = p->p_sigmask;
p->p_sigmask &= ~sigmask(sig_bsd);
(void) spl0();
return 0;
}
static int
ibcs2_sigignore(struct proc *p, struct ibcs2_signal_args *args, int *retval)
{
struct sigaction tmp;
int sig_bsd = ibcs2_to_bsd_signal[LEGAL_SIG(args->signo)];
tmp.sa_mask = sigmask(sig_bsd);
tmp.sa_handler = SIG_IGN;
tmp.sa_flags = 0;
*retval = (int)bsd_to_ibcs2_sigfunc(p->p_sigacts->ps_sigact[sig_bsd]);
setsigvec(p, sig_bsd, &tmp);
return 0;
}
static int
ibcs2_sigpause(struct proc *p, struct ibcs2_signal_args *args, int *retval)
{
struct sigacts *ps = p->p_sigacts;
int sig_bsd = ibcs2_to_bsd_signal[LEGAL_SIG(args->signo)];
ps->ps_oldmask = p->p_sigmask;
ps->ps_flags |= SAS_OLDMASK;
p->p_sigmask = sigmask(sig_bsd) &~ DONTMASK;
(void) tsleep((caddr_t) ps, PPAUSE|PCATCH, "i-pause", 0);
*retval = -1;
return EINTR;
}
static int
ibcs2_signal(struct proc *p, struct ibcs2_signal_args *args, int *retval)
{
struct sigaction tmp;
int sig_bsd = ibcs2_to_bsd_signal[LEGAL_SIG(args->signo)];
tmp.sa_mask = sigmask(sig_bsd);
tmp.sa_handler = ibcs2_to_bsd_sigfunc(args->func);
tmp.sa_flags = 0;
*retval = (int)bsd_to_ibcs2_sigfunc(p->p_sigacts->ps_sigact[sig_bsd]);
setsigvec(p, sig_bsd, &tmp);
return 0;
}
int
ibcs2_sigsys(struct proc *p, struct ibcs2_signal_args *args, int *retval)
{
if (ibcs2_trace & IBCS2_TRACE_SIGNAL)
printf("IBCS2: 'sigsys' signo=%d(%s) ",
args->signo & IBCS2_SIGMASK,
ibcs2_sig_to_str(args->signo & IBCS2_SIGMASK));
switch (args->signo & ~IBCS2_SIGMASK ) {
case 0x0000:
if (ibcs2_trace & IBCS2_TRACE_SIGNAL)
printf("signal() func=%x\n", args->func);
return ibcs2_signal(p, args, retval);
case 0x0100:
if (ibcs2_trace & IBCS2_TRACE_SIGNAL)
printf("sigset() func=%x\n", args->func);
return ibcs2_sigset(p, args, retval);
case 0x0200:
if (ibcs2_trace & IBCS2_TRACE_SIGNAL)
printf("sighold()\n");
return ibcs2_sighold(p, args, retval);
case 0x0400:
if (ibcs2_trace & IBCS2_TRACE_SIGNAL)
printf("sigrelse()\n");
return ibcs2_sigrelse(p, args, retval);
case 0x0800:
if (ibcs2_trace & IBCS2_TRACE_SIGNAL)
printf("sigignore()\n");
return ibcs2_sigignore(p, args, retval);
case 0x1000:
if (ibcs2_trace & IBCS2_TRACE_SIGNAL)
printf("sigpause()\n");
return ibcs2_sigpause(p, args, retval);
default:
printf("IBCS2: unknown signal action\n"); break;
}
*retval = -1;
return EINVAL;
}
struct ibcs2_sigaction_args {
int signo;
struct sigaction *osa, *nsa;
};
int
ibcs2_sigaction(struct proc *p, struct ibcs2_sigaction_args *args, int *retval)
{
struct sigaction vec;
register struct sigaction *sa;
register struct sigacts *ps = p->p_sigacts;
register int sig;
int bit, error;
if (ibcs2_trace & IBCS2_TRACE_SIGNAL)
printf("IBCS2: 'sigaction' signo=%d(%s)\n",
args->signo, ibcs2_sig_to_str(args->signo));
sig = ibcs2_to_bsd_signal[LEGAL_SIG(args->signo)];
if (sig <= 0 || sig >= NSIG || sig == SIGKILL || sig == SIGSTOP) {
*retval = -1;
return EINVAL;
}
sa = &vec;
if (args->osa) {
sa->sa_handler = ps->ps_sigact[sig];
sa->sa_mask = ps->ps_catchmask[sig];
bit = sigmask(sig);
sa->sa_flags = 0;
if (p->p_flag & SA_NOCLDSTOP)
sa->sa_flags = IBCS2_SA_NOCLDSTOP;
if (error = copyout((caddr_t)sa, (caddr_t)args->osa,
sizeof(vec))) {
*retval = -1;
return error;
}
}
if (args->nsa) {
if (error = copyin((caddr_t)args->nsa, (caddr_t)sa,
sizeof(vec))) {
*retval = -1;
return error;
}
/*
* iBCS2 only defines one SA_ flag right now
*/
if (vec.sa_flags & IBCS2_SA_NOCLDSTOP)
vec.sa_flags = SA_NOCLDSTOP;
setsigvec(p, sig, sa);
}
*retval = 0;
return 0;
}
struct ibcs2_sigprocmask_args {
int how;
unsigned long *mask;
unsigned long *omask;
};
int
ibcs2_sigprocmask(struct proc *p, struct ibcs2_sigprocmask_args *args, int *retval)
{
int error;
sigset_t umask;
sigset_t omask = bsd_to_ibcs2_sigmask(p->p_sigmask);
if (ibcs2_trace & IBCS2_TRACE_SIGNAL)
printf("IBCS2: 'sigprocmask' how=%d\n", args->how);
if (error = copyin(args->mask, &umask, sizeof(args->mask))) {
*retval = -1;
return error;
}
umask = ibcs2_to_bsd_sigmask(umask);
if (args->omask)
if (error = copyout(&omask, args->omask, sizeof(args->omask))) {
*retval = -1;
return error;
}
(void) splhigh();
switch (args->how) {
case 0: /* SIG_SETMASK */
p->p_sigmask = umask &~ DONTMASK;
break;
case 1: /* SIG_BLOCK */
p->p_sigmask |= (umask &~ DONTMASK);
break;
case 2: /* SIG_UNBLOCK */
p->p_sigmask &= ~umask;
break;
default:
error = EINVAL;
break;
}
(void) spl0();
if (error)
*retval = -1;
else
*retval = 0;
return error;
}
struct ibcs2_sigpending_args {
unsigned long *sigs;
};
int
ibcs2_sigpending(struct proc *p, struct ibcs2_sigpending_args *args, int *retval)
{
int error;
sigset_t mask = bsd_to_ibcs2_sigmask(p->p_siglist);
if (ibcs2_trace & IBCS2_TRACE_SIGNAL)
printf("IBCS2: 'sigpending' which=%x\n", args->sigs);
if (error = copyout(&mask, args->sigs, sizeof(unsigned long)))
*retval = -1;
else
*retval = 0;
return error;
}
struct ibcs2_sigsuspend_args {
sigset_t *mask;
};
int
ibcs2_sigsuspend(struct proc *p, struct ibcs2_sigsuspend_args *args, int *retval)
{
sigset_t mask = ibcs2_to_bsd_sigmask((sigset_t)args->mask);
if (ibcs2_trace & IBCS2_TRACE_SIGNAL)
printf("IBCS2: 'sigsuspend'\n");
return sigsuspend(p, &mask, retval);
}
struct kill_args {
int pid;
int signo;
};
int
ibcs2_kill(struct proc *p, struct kill_args *args, int *retval)
{
struct kill_args tmp;
if (ibcs2_trace & IBCS2_TRACE_SIGNAL)
printf("IBCS2: 'kill' pid=%d, sig=%d(%s)\n", args->pid,
args->signo, ibcs2_sig_to_str(args->signo));
tmp.pid = args->pid;
tmp.signo = (args->signo < IBCS2_NSIG) ?
ibcs2_to_bsd_signal[args->signo] : IBCS2_NSIG;
return kill(p, &tmp, retval);
}