463 lines
12 KiB
C
463 lines
12 KiB
C
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/*-
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* Copyright (c) 1994 Sean Eric Fagan
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* Copyright (c) 1994 S<EFBFBD>ren Schmidt
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* All rights reserved.
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*
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* Copyright (c) 1982, 1986, 1989, 1991 Regents of the University of California.
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: ibcs2_signal.c,v 1.9 1994/10/12 19:38:03 sos Exp $
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*/
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#include <i386/ibcs2/ibcs2.h>
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#include <sys/ioctl.h>
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#include <sys/ioctl_compat.h>
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/fcntl.h>
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#include <sys/file.h>
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#include <sys/filedesc.h>
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#include <sys/namei.h>
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#include <sys/mount.h>
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#include <sys/proc.h>
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#include <sys/resource.h>
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#include <sys/resourcevar.h>
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#include <sys/signal.h>
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#include <sys/signalvar.h>
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#include <sys/stat.h>
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#include <sys/tty.h>
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#include <sys/termios.h>
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#include <sys/time.h>
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#include <sys/times.h>
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#include <sys/vnode.h>
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#include <vm/vm.h>
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#include <vm/vm_param.h>
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#include <vm/vm_map.h>
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#include <vm/vm_kern.h>
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#define DONTMASK (sigmask(SIGKILL)|sigmask(SIGSTOP)|sigmask(SIGCHLD))
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int bsd_to_ibcs2_signal[NSIG] = {
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0, IBCS2_SIGHUP, IBCS2_SIGINT, IBCS2_SIGQUIT,
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IBCS2_SIGILL, IBCS2_SIGTRAP, IBCS2_SIGABRT, IBCS2_SIGEMT,
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IBCS2_SIGFPE, IBCS2_SIGKILL, IBCS2_SIGBUS, IBCS2_SIGSEGV,
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IBCS2_SIGSYS, IBCS2_SIGPIPE, IBCS2_SIGALRM, IBCS2_SIGTERM,
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IBCS2_SIGURG, IBCS2_SIGSTOP, IBCS2_SIGTSTP, IBCS2_SIGCONT,
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IBCS2_SIGCHLD, IBCS2_SIGTTIN, IBCS2_SIGTTOU, IBCS2_SIGIO,
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IBCS2_SIGGXCPU, IBCS2_SIGGXFSZ, IBCS2_SIGVTALRM, IBCS2_SIGPROF,
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IBCS2_SIGWINCH, 0, IBCS2_SIGUSR1, IBCS2_SIGUSR2
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};
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int ibcs2_to_bsd_signal[IBCS2_NSIG] = {
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0, SIGHUP, SIGINT, SIGQUIT, SIGILL, SIGTRAP, SIGABRT, SIGEMT,
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SIGFPE, SIGKILL, SIGBUS, SIGSEGV, SIGSYS, SIGPIPE, SIGALRM, SIGTERM,
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SIGUSR1, SIGUSR2, SIGCHLD, 0, SIGWINCH, SIGURG, SIGIO, SIGSTOP,
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SIGTSTP, SIGCONT, SIGTTIN, SIGTTOU, SIGVTALRM, SIGPROF, SIGXCPU, SIGXFSZ
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};
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static char ibcs2_sig_name[IBCS2_NSIG][10] = {
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"UNKNOWN", "SIGHUP", "SIGINT", "SIGQUIT", "SIGILL", "SIGTRAP",
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"SIGABRT", "SIGEMT", "SIGFPE", "SIGKILL", "SIGBUS", "SIGSEGV",
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"SIGSYS", "SIGPIPE", "SIGALRM", "SIGTERM", "SIGUSR1", "SIGUSR2",
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"SIGCHLD", "SIGPWR", "SIGWINCH", "SIGURG", "SIGIO", "SIGSTOP",
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"SIGTSTP", "SIGCONT", "SIGTTIN", "SIGTTOU", "SIGVTALRM",
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"SIGPROF", "SIGXCPU", "SIGXFSZ"
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};
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/*#define LEGAL_SIG(x) \
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(((x & IBCS2_SIGMASK) < IBCS2_NSIG) ? (x & IBCS2_SIGMASK) : (0))*/
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int
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LEGAL_SIG(int sig)
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{
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if ((sig & IBCS2_SIGMASK) > IBCS2_NSIG) {
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printf("IBCS2: illegal ibcs2 signal %d(%08x)\n",
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sig & IBCS2_SIGMASK, sig);
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return 0;
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}
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else
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return (sig & IBCS2_SIGMASK);
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}
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char *
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ibcs2_sig_to_str(int sig)
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{
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if (sig > IBCS2_NSIG) {
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printf("IBCS2: ibcs2 signal out of range (%d)\n", sig);
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return ibcs2_sig_name[0];
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}
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else
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return ibcs2_sig_name[sig];
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}
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static sig_t
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ibcs2_to_bsd_sigfunc(ibcs2_sig_t func) {
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switch ((int)func) {
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case IBCS2_SIG_DFL:
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return SIG_DFL;
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case IBCS2_SIG_IGN:
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return SIG_IGN;
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case IBCS2_SIG_HOLD:
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return SIG_HOLD;
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default:
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return func;
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}
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}
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static ibcs2_sig_t
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bsd_to_ibcs2_sigfunc(sig_t func) {
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switch ((int)func) {
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case SIG_DFL:
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return IBCS2_SIG_DFL;
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case SIG_IGN:
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return IBCS2_SIG_IGN;
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case SIG_CATCH:
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printf("IBCS2: Oops - SIG_CATCH does not translate :-(\n");
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return IBCS2_SIG_DFL;
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case SIG_HOLD:
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return IBCS2_SIG_HOLD;
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default:
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return func;
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}
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}
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static sigset_t
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ibcs2_to_bsd_sigmask(ibcs2_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 << (ibcs2_to_bsd_signal[i]-1));
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return new;
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}
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static ibcs2_sigset_t
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bsd_to_ibcs2_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 < IBCS2_NSIG; i++)
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if (mask & (1 << i-1))
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new |= (1 << (bsd_to_ibcs2_signal[i]-1));
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return new;
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}
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struct ibcs2_signal_args {
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int signo;
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ibcs2_sig_t func;
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};
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static int
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ibcs2_sigset(struct proc *p, struct ibcs2_signal_args *args, int *retval)
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{
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struct sigaction tmp;
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int sig_bsd = ibcs2_to_bsd_signal[LEGAL_SIG(args->signo)];
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*retval = (int)bsd_to_ibcs2_sigfunc(p->p_sigacts->ps_sigact[sig_bsd]);
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if (args->func == IBCS2_SIG_HOLD) {
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(void) splhigh();
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p->p_sigmask |= (sigmask(sig_bsd) &~ DONTMASK);
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(void) spl0();
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}
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else {
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tmp.sa_mask = sigmask(sig_bsd);
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tmp.sa_handler = ibcs2_to_bsd_sigfunc(args->func);
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tmp.sa_flags = 0;
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setsigvec(p, sig_bsd, &tmp);
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}
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return 0;
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}
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static int
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ibcs2_sighold(struct proc *p, struct ibcs2_signal_args *args, int *retval)
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{
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int sig_bsd = ibcs2_to_bsd_signal[LEGAL_SIG(args->signo)];
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(void) splhigh();
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*retval = p->p_sigmask;
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p->p_sigmask |= (sigmask(sig_bsd) & ~DONTMASK);
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(void) spl0();
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return 0;
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}
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static int
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ibcs2_sigrelse(struct proc *p, struct ibcs2_signal_args *args, int *retval)
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{
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int sig_bsd = ibcs2_to_bsd_signal[LEGAL_SIG(args->signo)];
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(void) splhigh();
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*retval = p->p_sigmask;
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p->p_sigmask &= ~sigmask(sig_bsd);
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(void) spl0();
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return 0;
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}
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static int
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ibcs2_sigignore(struct proc *p, struct ibcs2_signal_args *args, int *retval)
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{
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struct sigaction tmp;
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int sig_bsd = ibcs2_to_bsd_signal[LEGAL_SIG(args->signo)];
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tmp.sa_mask = sigmask(sig_bsd);
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tmp.sa_handler = SIG_IGN;
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tmp.sa_flags = 0;
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*retval = (int)bsd_to_ibcs2_sigfunc(p->p_sigacts->ps_sigact[sig_bsd]);
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setsigvec(p, sig_bsd, &tmp);
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return 0;
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}
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static int
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ibcs2_sigpause(struct proc *p, struct ibcs2_signal_args *args, int *retval)
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{
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struct sigacts *ps = p->p_sigacts;
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int sig_bsd = ibcs2_to_bsd_signal[LEGAL_SIG(args->signo)];
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ps->ps_oldmask = p->p_sigmask;
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ps->ps_flags |= SAS_OLDMASK;
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p->p_sigmask = sigmask(sig_bsd) &~ DONTMASK;
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(void) tsleep((caddr_t) ps, PPAUSE|PCATCH, "i-pause", 0);
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*retval = -1;
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return EINTR;
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}
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static int
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ibcs2_signal(struct proc *p, struct ibcs2_signal_args *args, int *retval)
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{
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struct sigaction tmp;
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int sig_bsd = ibcs2_to_bsd_signal[LEGAL_SIG(args->signo)];
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tmp.sa_mask = sigmask(sig_bsd);
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tmp.sa_handler = ibcs2_to_bsd_sigfunc(args->func);
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tmp.sa_flags = 0;
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*retval = (int)bsd_to_ibcs2_sigfunc(p->p_sigacts->ps_sigact[sig_bsd]);
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setsigvec(p, sig_bsd, &tmp);
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return 0;
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}
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int
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ibcs2_sigsys(struct proc *p, struct ibcs2_signal_args *args, int *retval)
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{
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if (ibcs2_trace & IBCS2_TRACE_SIGNAL)
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printf("IBCS2: 'sigsys' signo=%d(%s) ",
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args->signo & IBCS2_SIGMASK,
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ibcs2_sig_to_str(args->signo & IBCS2_SIGMASK));
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switch (args->signo & ~IBCS2_SIGMASK ) {
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case 0x0000:
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if (ibcs2_trace & IBCS2_TRACE_SIGNAL)
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printf("signal() func=%x\n", args->func);
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return ibcs2_signal(p, args, retval);
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case 0x0100:
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if (ibcs2_trace & IBCS2_TRACE_SIGNAL)
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printf("sigset() func=%x\n", args->func);
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return ibcs2_sigset(p, args, retval);
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case 0x0200:
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if (ibcs2_trace & IBCS2_TRACE_SIGNAL)
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printf("sighold()\n");
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return ibcs2_sighold(p, args, retval);
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case 0x0400:
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if (ibcs2_trace & IBCS2_TRACE_SIGNAL)
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printf("sigrelse()\n");
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return ibcs2_sigrelse(p, args, retval);
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case 0x0800:
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if (ibcs2_trace & IBCS2_TRACE_SIGNAL)
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printf("sigignore()\n");
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return ibcs2_sigignore(p, args, retval);
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case 0x1000:
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if (ibcs2_trace & IBCS2_TRACE_SIGNAL)
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printf("sigpause()\n");
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return ibcs2_sigpause(p, args, retval);
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default:
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printf("IBCS2: unknown signal action\n"); break;
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}
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*retval = -1;
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return EINVAL;
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}
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struct ibcs2_sigaction_args {
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int signo;
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struct sigaction *osa, *nsa;
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};
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int
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ibcs2_sigaction(struct proc *p, struct ibcs2_sigaction_args *args, int *retval)
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{
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struct sigaction vec;
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register struct sigaction *sa;
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register struct sigacts *ps = p->p_sigacts;
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register int sig;
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int bit, error;
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if (ibcs2_trace & IBCS2_TRACE_SIGNAL)
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printf("IBCS2: 'sigaction' signo=%d(%s)\n",
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args->signo, ibcs2_sig_to_str(args->signo));
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|
|
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);
|
|||
|
|
}
|
|||
|
|
|