410 lines
9.7 KiB
C
410 lines
9.7 KiB
C
/*
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* Copyright (c) 1995 Scott Bartram
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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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* 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 without 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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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/namei.h>
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#include <sys/proc.h>
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#include <sys/file.h>
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#include <sys/stat.h>
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#include <sys/filedesc.h>
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#include <sys/ioctl.h>
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#include <sys/kernel.h>
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#include <sys/mount.h>
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#include <sys/malloc.h>
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#include <sys/signal.h>
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#include <sys/syscallargs.h>
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#include <compat/ibcs2/ibcs2_types.h>
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#include <compat/ibcs2/ibcs2_fcntl.h>
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#include <compat/ibcs2/ibcs2_signal.h>
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#include <compat/ibcs2/ibcs2_syscallargs.h>
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#include <compat/ibcs2/ibcs2_util.h>
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#define NOSIG (-1)
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static int ibcs2bsd_sigtbl[IBCS2_NSIG] = {
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NOSIG, /* 0 */
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SIGHUP, /* 1 */
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SIGINT, /* 2 */
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SIGQUIT, /* 3 */
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SIGILL, /* 4 */
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SIGTRAP, /* 5 */
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SIGABRT, /* 6 */
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SIGEMT, /* 7 */
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SIGFPE, /* 8 */
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SIGKILL, /* 9 */
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SIGBUS, /* 10 */
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SIGSEGV, /* 11 */
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SIGSYS, /* 12 */
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SIGPIPE, /* 13 */
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SIGALRM, /* 14 */
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SIGTERM, /* 15 */
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SIGUSR1, /* 16 */
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SIGUSR2, /* 17 */
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SIGCHLD, /* 18 */
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NOSIG, /* 19 - SIGPWR */
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SIGWINCH, /* 20 */
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NOSIG, /* 21 */
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NOSIG, /* 22 - SIGPOLL */
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SIGSTOP, /* 23 */
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SIGTSTP, /* 24 */
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SIGCONT, /* 25 */
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SIGTTIN, /* 26 */
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SIGTTOU, /* 27 */
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SIGVTALRM, /* 28 */
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SIGPROF, /* 29 */
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NOSIG, /* 30 */
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NOSIG, /* 31 */
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};
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static int bsd2ibcs_sigtbl[NSIG] = {
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NOSIG, /* 0 */
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IBCS2_SIGHUP, /* 1 */
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IBCS2_SIGINT, /* 2 */
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IBCS2_SIGQUIT, /* 3 */
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IBCS2_SIGILL, /* 4 */
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IBCS2_SIGTRAP, /* 5 */
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IBCS2_SIGABRT, /* 6 */
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IBCS2_SIGEMT, /* 7 */
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IBCS2_SIGFPE, /* 8 */
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IBCS2_SIGKILL, /* 9 */
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IBCS2_SIGBUS, /* 10 */
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IBCS2_SIGSEGV, /* 11 */
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IBCS2_SIGSYS, /* 12 */
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IBCS2_SIGPIPE, /* 13 */
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IBCS2_SIGALRM, /* 14 */
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IBCS2_SIGTERM, /* 15 */
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NOSIG, /* 16 */
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IBCS2_SIGSTOP, /* 17 */
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IBCS2_SIGTSTP, /* 18 */
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IBCS2_SIGCONT, /* 19 */
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IBCS2_SIGCLD, /* 20 */
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IBCS2_SIGTTIN, /* 21 */
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IBCS2_SIGTTOU, /* 22 */
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NOSIG, /* 23 */
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NOSIG, /* 24 */
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NOSIG, /* 25 */
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IBCS2_SIGVTALRM, /* 26 */
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IBCS2_SIGPROF, /* 27 */
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IBCS2_SIGWINCH, /* 28 */
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NOSIG, /* 29 */
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IBCS2_SIGUSR1, /* 30 */
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IBCS2_SIGUSR2, /* 31 */
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};
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static int
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ibcs2bsd_sig(sig)
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int sig;
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{
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if (sig < 1 || sig >= IBCS2_NSIG)
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return NOSIG;
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else
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return ibcs2bsd_sigtbl[sig];
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}
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int
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bsd2ibcs_sig(sig)
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int sig;
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{
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if (sig < 1 || sig >= NSIG)
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return NOSIG;
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else
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return bsd2ibcs_sigtbl[sig];
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}
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static sigset_t
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cvt_sigmask(mask, sigtbl)
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sigset_t mask;
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int sigtbl[];
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{
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int i, newmask;
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for (i = 0, newmask = 0; i < NSIG; i++)
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if ((sigtbl[i] != NOSIG) && (mask & (1 << i)))
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newmask |= (1 << (sigtbl[i] - 1));
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return newmask;
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}
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static void
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cvt_sa2isa(sap, isap)
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struct sigaction *sap;
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struct ibcs2_sigaction *isap;
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{
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isap->sa_handler = sap->sa_handler;
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isap->sa_mask = cvt_sigmask(sap->sa_mask, bsd2ibcs_sigtbl);
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isap->sa_flags = (sap->sa_flags & SA_NOCLDSTOP)
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? IBCS2_SA_NOCLDSTOP : 0;
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}
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static void
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cvt_isa2sa(isap, sap)
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struct ibcs2_sigaction *isap;
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struct sigaction *sap;
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{
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sap->sa_handler = isap->sa_handler;
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sap->sa_mask = cvt_sigmask(isap->sa_mask, ibcs2bsd_sigtbl);
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sap->sa_flags = (isap->sa_flags & IBCS2_SA_NOCLDSTOP)
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? SA_NOCLDSTOP : 0;
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}
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int
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ibcs2_sigsys(p, uap, retval)
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struct proc *p;
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struct ibcs2_sigsys_args *uap;
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int *retval;
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{
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int error;
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int nsig = ibcs2bsd_sig(IBCS2_SIGNO(SCARG(uap, sig)));
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if (nsig == NOSIG) {
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if (IBCS2_SIGCALL(SCARG(uap, sig)) == IBCS2_SIGNAL_MASK
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|| IBCS2_SIGCALL(SCARG(uap, sig)) == IBCS2_SIGSET_MASK)
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*retval = (int)IBCS2_SIG_ERR;
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return EINVAL;
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}
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switch (IBCS2_SIGCALL(SCARG(uap, sig))) {
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/*
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* sigset is identical to signal() except that SIG_HOLD is allowed as
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* an action and we don't set the bit in the ibcs_sigflags field.
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*/
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case IBCS2_SIGSET_MASK:
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if (SCARG(uap, fp) == IBCS2_SIG_HOLD) {
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struct sigprocmask_args sa;
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SCARG(&sa, how) = SIG_BLOCK;
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SCARG(&sa, mask) = sigmask(nsig);
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return sigprocmask(p, &sa, retval);
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}
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/* else fall through */
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case IBCS2_SIGNAL_MASK:
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{
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struct sigaction *sap, *osap;
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struct sigaction_args sa_args;
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caddr_t sg = stackgap_init();
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sap = stackgap_alloc(&sg, sizeof(*sap));
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osap = stackgap_alloc(&sg, sizeof(*sap));
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sap->sa_handler = SCARG(uap, fp);
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sap->sa_mask = (sigset_t)0;
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sap->sa_flags = 0;
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#if 0
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if (SCARG(&sa_args, sig) != SIGALRM)
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sap->sa_flags = SA_RESTART;
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#endif
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SCARG(&sa_args, signum) = nsig;
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SCARG(&sa_args, nsa) = sap;
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SCARG(&sa_args, osa) = osap;
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error = sigaction(p, &sa_args, retval);
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if (error) {
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DPRINTF(("signal: sigaction failed: %d\n",
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error));
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*retval = (int)IBCS2_SIG_ERR;
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return error;
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}
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*retval = (int)SCARG(&sa_args, osa)->sa_handler;
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if (IBCS2_SIGCALL(SCARG(uap, sig)) == IBCS2_SIGNAL_MASK)
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p->p_md.ibcs_sigflags |= sigmask(nsig);
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return 0;
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}
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case IBCS2_SIGHOLD_MASK:
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{
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struct sigprocmask_args sa;
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sa.how = SIG_BLOCK;
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sa.mask = sigmask(nsig);
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return sigprocmask(p, &sa, retval);
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}
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case IBCS2_SIGRELSE_MASK:
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{
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struct sigprocmask_args sa;
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sa.how = SIG_UNBLOCK;
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sa.mask = sigmask(nsig);
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return sigprocmask(p, &sa, retval);
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}
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case IBCS2_SIGIGNORE_MASK:
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{
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struct sigaction *sap;
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struct sigaction_args sa_args;
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caddr_t sg = stackgap_init();
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sap = stackgap_alloc(&sg, sizeof(*sap));
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sap->sa_handler = SIG_IGN;
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sap->sa_mask = (sigset_t)0;
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sap->sa_flags = 0;
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SCARG(&sa_args, signum) = nsig;
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SCARG(&sa_args, nsa) = sap;
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SCARG(&sa_args, osa) = NULL;
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error = sigaction(p, &sa_args, retval);
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if (error) {
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DPRINTF(("sigignore: sigaction failed\n"));
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return error;
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}
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return 0;
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}
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case IBCS2_SIGPAUSE_MASK:
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{
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struct sigsuspend_args sa;
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SCARG(&sa, mask) = p->p_sigmask &~ sigmask(nsig);
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return sigsuspend(p, &sa, retval);
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}
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default:
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return ENOSYS;
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}
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}
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int
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ibcs2_sigaction(p, uap, retval)
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struct proc *p;
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struct ibcs2_sigaction_args *uap;
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int *retval;
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{
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int error;
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struct sigaction_args sa;
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struct ibcs2_sigaction *isa, *oisa;
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caddr_t sg = stackgap_init();
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isa = stackgap_alloc(&sg, sizeof(*isa));
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oisa = stackgap_alloc(&sg, sizeof(*oisa));
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SCARG(&sa, signum) = ibcs2bsd_sig(SCARG(uap, sig));
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SCARG(&sa, nsa) = stackgap_alloc(&sg, sizeof(*SCARG(&sa, nsa)));
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SCARG(&sa, osa) = stackgap_alloc(&sg, sizeof(*SCARG(&sa, osa)));
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if (error = copyin((caddr_t)SCARG(uap, act), (caddr_t)isa,
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sizeof(*isa)))
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return error;
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cvt_isa2sa(isa, SCARG(&sa, nsa));
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if (error = sigaction(p, &sa, retval))
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return error;
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cvt_sa2isa(SCARG(&sa, osa), oisa);
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return copyout((caddr_t)oisa, (caddr_t)SCARG(uap, oact), sizeof(*oisa));
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}
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int
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ibcs2_sigprocmask(p, uap, retval)
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struct proc *p;
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struct ibcs2_sigprocmask_args *uap;
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int *retval;
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{
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int error;
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sigset_t iset;
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struct sigprocmask_args sa;
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if (SCARG(uap, set)) {
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switch (SCARG(uap, how)) {
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case IBCS2_SIG_BLOCK:
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SCARG(&sa, how) = SIG_BLOCK;
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break;
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case IBCS2_SIG_UNBLOCK:
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SCARG(&sa, how) = SIG_UNBLOCK;
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break;
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case IBCS2_SIG_SETMASK:
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SCARG(&sa, how) = SIG_SETMASK;
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break;
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default:
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return EINVAL;
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}
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if (error = copyin((caddr_t)SCARG(uap, set), (caddr_t)&iset,
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sizeof(iset)))
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return error;
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SCARG(&sa, mask) = cvt_sigmask(iset, ibcs2bsd_sigtbl);
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} else {
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SCARG(&sa, how) = SIG_BLOCK; /* TODO: CHECK THIS */
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SCARG(&sa, mask) = 0;
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}
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if (error = sigprocmask(p, &sa, retval))
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return error;
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if (SCARG(uap, oset) == NULL) {
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*retval = 0;
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return 0;
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}
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iset = cvt_sigmask(*retval, bsd2ibcs_sigtbl);
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*retval = 0;
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return copyout((caddr_t)&iset, (caddr_t)SCARG(uap, oset),
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sizeof(iset));
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}
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int
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ibcs2_sigpending(p, uap, retval)
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struct proc *p;
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struct ibcs2_sigpending_args *uap;
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int *retval;
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{
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int mask = cvt_sigmask(p->p_siglist & p->p_sigmask, bsd2ibcs_sigtbl);
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return (copyout((caddr_t)&mask, (caddr_t)SCARG(uap, mask),
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sizeof(int)));
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}
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int
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ibcs2_sigsuspend(p, uap, retval)
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struct proc *p;
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struct ibcs2_sigsuspend_args *uap;
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int *retval;
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{
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int error;
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struct sigsuspend_args sa;
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if (error = copyin((caddr_t)SCARG(uap, mask), (caddr_t)SCARG(&sa, mask),
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sizeof(SCARG(&sa, mask))))
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return error;
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return sigsuspend(p, &sa, retval);
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}
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int
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ibcs2_pause(p, uap, retval)
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struct proc *p;
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void *uap;
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int *retval;
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{
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int error;
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struct sigsuspend_args sa;
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SCARG(&sa, mask) = p->p_sigmask;
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error = sigsuspend(p, &sa, retval);
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return error;
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}
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int
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ibcs2_kill(p, uap, retval)
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struct proc *p;
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struct ibcs2_kill_args *uap;
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int *retval;
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{
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SCARG(uap, signo) = ibcs2bsd_sig(SCARG(uap, signo));
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if (SCARG(uap, signo) == NOSIG)
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return EINVAL;
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return kill(p, uap, retval);
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}
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