667 lines
15 KiB
C
667 lines
15 KiB
C
/*
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* Copyright (c) 1998 Mark Newton
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* Copyright (c) 1994 Christos Zoulas
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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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* $FreeBSD$
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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/proc.h>
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#include <sys/filedesc.h>
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#include <sys/signal.h>
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#include <sys/signalvar.h>
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#include <sys/sysproto.h>
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#include <compat/svr4/svr4.h>
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#include <compat/svr4/svr4_types.h>
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#include <compat/svr4/svr4_signal.h>
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#include <compat/svr4/svr4_proto.h>
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#include <compat/svr4/svr4_util.h>
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#include <compat/svr4/svr4_ucontext.h>
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#define svr4_sigmask(n) (1 << (((n) - 1) & 31))
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#define svr4_sigword(n) (((n) - 1) >> 5)
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#define svr4_sigemptyset(s) memset((s), 0, sizeof(*(s)))
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#define svr4_sigismember(s, n) ((s)->bits[svr4_sigword(n)] & svr4_sigmask(n))
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#define svr4_sigaddset(s, n) ((s)->bits[svr4_sigword(n)] |= svr4_sigmask(n))
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void svr4_to_bsd_sigaction __P((const struct svr4_sigaction *,
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struct sigaction *));
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void bsd_to_svr4_sigaction __P((const struct sigaction *,
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struct svr4_sigaction *));
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void svr4_sigfillset __P((svr4_sigset_t *));
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int bsd_to_svr4_sig[SVR4_SIGTBLSZ] = {
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SVR4_SIGHUP,
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SVR4_SIGINT,
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SVR4_SIGQUIT,
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SVR4_SIGILL,
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SVR4_SIGTRAP,
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SVR4_SIGABRT,
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SVR4_SIGEMT,
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SVR4_SIGFPE,
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SVR4_SIGKILL,
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SVR4_SIGBUS,
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SVR4_SIGSEGV,
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SVR4_SIGSYS,
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SVR4_SIGPIPE,
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SVR4_SIGALRM,
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SVR4_SIGTERM,
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SVR4_SIGURG,
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SVR4_SIGSTOP,
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SVR4_SIGTSTP,
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SVR4_SIGCONT,
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SVR4_SIGCHLD,
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SVR4_SIGTTIN,
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SVR4_SIGTTOU,
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SVR4_SIGIO,
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SVR4_SIGXCPU,
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SVR4_SIGXFSZ,
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SVR4_SIGVTALRM,
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SVR4_SIGPROF,
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SVR4_SIGWINCH,
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0, /* SIGINFO */
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SVR4_SIGUSR1,
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SVR4_SIGUSR2,
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};
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int svr4_to_bsd_sig[SVR4_SIGTBLSZ] = {
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SIGHUP,
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SIGINT,
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SIGQUIT,
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SIGILL,
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SIGTRAP,
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SIGABRT,
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SIGEMT,
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SIGFPE,
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SIGKILL,
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SIGBUS,
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SIGSEGV,
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SIGSYS,
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SIGPIPE,
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SIGALRM,
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SIGTERM,
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SIGUSR1,
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SIGUSR2,
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SIGCHLD,
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0, /* XXX NetBSD uses SIGPWR here, but we don't seem to have one */
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SIGWINCH,
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SIGURG,
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SIGIO,
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SIGSTOP,
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SIGTSTP,
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SIGCONT,
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SIGTTIN,
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SIGTTOU,
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SIGVTALRM,
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SIGPROF,
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SIGXCPU,
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SIGXFSZ,
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};
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void
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svr4_sigfillset(s)
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svr4_sigset_t *s;
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{
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int i;
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svr4_sigemptyset(s);
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for (i = 0; i < SVR4_NSIG; i++)
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if (svr4_to_bsd_sig[i] != 0)
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svr4_sigaddset(s, i);
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}
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void
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svr4_to_bsd_sigset(sss, bss)
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const svr4_sigset_t *sss;
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sigset_t *bss;
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{
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int i, newsig;
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SIGEMPTYSET(*bss);
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for (i = 0; i < SVR4_NSIG; i++)
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if (svr4_sigismember(sss, i + 1)) {
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newsig = svr4_to_bsd_sig[i];
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if (newsig)
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SIGADDSET(*bss, newsig);
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}
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}
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void
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bsd_to_svr4_sigset(bss, sss)
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const sigset_t *bss;
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svr4_sigset_t *sss;
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{
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int i, newsig;
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svr4_sigemptyset(sss);
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sss->bits[0] = bss->__bits[0] & ~((1U << SVR4_SIGTBLSZ) - 1);
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sss->bits[1] = bss->__bits[1];
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sss->bits[2] = bss->__bits[2];
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sss->bits[3] = bss->__bits[3];
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for (i = 1; i <= SVR4_SIGTBLSZ; i++) {
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if (SIGISMEMBER(*bss, i)) {
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newsig = bsd_to_svr4_sig[_SIG_IDX(i)];
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if (newsig)
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svr4_sigaddset(sss, newsig);
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}
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}
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}
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/*
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* XXX: Only a subset of the flags is currently implemented.
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*/
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void
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svr4_to_bsd_sigaction(ssa, bsa)
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const struct svr4_sigaction *ssa;
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struct sigaction *bsa;
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{
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bsa->sa_handler = (sig_t) ssa->ssa_handler;
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svr4_to_bsd_sigset(&ssa->ssa_mask, &bsa->sa_mask);
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bsa->sa_flags = 0;
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if ((ssa->ssa_flags & SVR4_SA_ONSTACK) != 0)
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bsa->sa_flags |= SA_ONSTACK;
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if ((ssa->ssa_flags & SVR4_SA_RESETHAND) != 0)
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bsa->sa_flags |= SA_RESETHAND;
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if ((ssa->ssa_flags & SVR4_SA_RESTART) != 0)
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bsa->sa_flags |= SA_RESTART;
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if ((ssa->ssa_flags & SVR4_SA_SIGINFO) != 0)
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DPRINTF(("svr4_to_bsd_sigaction: SA_SIGINFO ignored\n"));
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if ((ssa->ssa_flags & SVR4_SA_NOCLDSTOP) != 0)
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bsa->sa_flags |= SA_NOCLDSTOP;
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if ((ssa->ssa_flags & SVR4_SA_NODEFER) != 0)
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bsa->sa_flags |= SA_NODEFER;
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if ((ssa->ssa_flags & SVR4_SA_NOCLDWAIT) != 0)
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bsa->sa_flags |= SA_NOCLDWAIT;
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if ((ssa->ssa_flags & ~SVR4_SA_ALLBITS) != 0)
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DPRINTF(("svr4_to_bsd_sigaction: extra bits ignored\n"));
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}
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void
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bsd_to_svr4_sigaction(bsa, ssa)
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const struct sigaction *bsa;
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struct svr4_sigaction *ssa;
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{
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ssa->ssa_handler = (svr4_sig_t) bsa->sa_handler;
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bsd_to_svr4_sigset(&bsa->sa_mask, &ssa->ssa_mask);
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ssa->ssa_flags = 0;
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if ((bsa->sa_flags & SA_ONSTACK) != 0)
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ssa->ssa_flags |= SVR4_SA_ONSTACK;
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if ((bsa->sa_flags & SA_RESETHAND) != 0)
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ssa->ssa_flags |= SVR4_SA_RESETHAND;
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if ((bsa->sa_flags & SA_RESTART) != 0)
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ssa->ssa_flags |= SVR4_SA_RESTART;
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if ((bsa->sa_flags & SA_NODEFER) != 0)
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ssa->ssa_flags |= SVR4_SA_NODEFER;
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if ((bsa->sa_flags & SA_NOCLDSTOP) != 0)
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ssa->ssa_flags |= SVR4_SA_NOCLDSTOP;
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}
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void
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svr4_to_bsd_sigaltstack(sss, bss)
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const struct svr4_sigaltstack *sss;
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struct sigaltstack *bss;
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{
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bss->ss_sp = sss->ss_sp;
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bss->ss_size = sss->ss_size;
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bss->ss_flags = 0;
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if ((sss->ss_flags & SVR4_SS_DISABLE) != 0)
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bss->ss_flags |= SS_DISABLE;
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if ((sss->ss_flags & SVR4_SS_ONSTACK) != 0)
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bss->ss_flags |= SS_ONSTACK;
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if ((sss->ss_flags & ~SVR4_SS_ALLBITS) != 0)
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/*XXX*/ uprintf("svr4_to_bsd_sigaltstack: extra bits ignored\n");
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}
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void
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bsd_to_svr4_sigaltstack(bss, sss)
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const struct sigaltstack *bss;
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struct svr4_sigaltstack *sss;
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{
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sss->ss_sp = bss->ss_sp;
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sss->ss_size = bss->ss_size;
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sss->ss_flags = 0;
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if ((bss->ss_flags & SS_DISABLE) != 0)
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sss->ss_flags |= SVR4_SS_DISABLE;
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if ((bss->ss_flags & SS_ONSTACK) != 0)
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sss->ss_flags |= SVR4_SS_ONSTACK;
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}
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int
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svr4_sys_sigaction(p, uap)
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register struct proc *p;
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struct svr4_sys_sigaction_args *uap;
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{
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struct svr4_sigaction *nisa, *oisa, tmpisa;
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struct sigaction *nbsa, *obsa, tmpbsa;
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struct sigaction_args sa;
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caddr_t sg;
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int error;
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DPRINTF(("@@@ svr4_sys_sigaction(%d, %d, %d)\n", p->p_pid,
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SCARG(uap, signum),
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SVR4_SVR42BSD_SIG(SCARG(uap, signum))));
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sg = stackgap_init();
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nisa = SCARG(uap, nsa);
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oisa = SCARG(uap, osa);
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if (oisa != NULL)
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obsa = stackgap_alloc(&sg, sizeof(struct sigaction));
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else
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obsa = NULL;
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if (nisa != NULL) {
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nbsa = stackgap_alloc(&sg, sizeof(struct sigaction));
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if ((error = copyin(nisa, &tmpisa, sizeof(tmpisa))) != 0)
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return error;
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svr4_to_bsd_sigaction(&tmpisa, &tmpbsa);
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if ((error = copyout(&tmpbsa, nbsa, sizeof(tmpbsa))) != 0)
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return error;
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} else
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nbsa = NULL;
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#if defined(DEBUG_SVR4)
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{
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int i;
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for (i = 0; i < 4; i++)
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DPRINTF(("\tssa_mask[%d] = %lx\n", i,
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nisa->ssa_mask.bits[i]));
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DPRINTF(("\tssa_handler = %lx\n", nisa->ssa_handler));
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}
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#endif
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SCARG(&sa, sig) = SVR4_SVR42BSD_SIG(SCARG(uap, signum));
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SCARG(&sa, act) = nbsa;
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SCARG(&sa, oact) = obsa;
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if ((error = sigaction(p, &sa)) != 0)
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return error;
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if (oisa != NULL) {
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if ((error = copyin(obsa, &tmpbsa, sizeof(tmpbsa))) != 0)
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return error;
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bsd_to_svr4_sigaction(&tmpbsa, &tmpisa);
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if ((error = copyout(&tmpisa, oisa, sizeof(tmpisa))) != 0)
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return error;
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}
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return 0;
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}
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int
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svr4_sys_sigaltstack(p, uap)
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register struct proc *p;
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struct svr4_sys_sigaltstack_args *uap;
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{
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struct svr4_sigaltstack *nsss, *osss, tmpsss;
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struct sigaltstack *nbss, *obss, tmpbss;
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struct sigaltstack_args sa;
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caddr_t sg;
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int error, *retval;
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retval = p->p_retval;
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sg = stackgap_init();
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nsss = SCARG(uap, nss);
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osss = SCARG(uap, oss);
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if (osss != NULL)
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obss = stackgap_alloc(&sg, sizeof(struct sigaltstack));
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else
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obss = NULL;
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if (nsss != NULL) {
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nbss = stackgap_alloc(&sg, sizeof(struct sigaltstack));
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if ((error = copyin(nsss, &tmpsss, sizeof(tmpsss))) != 0)
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return error;
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svr4_to_bsd_sigaltstack(&tmpsss, &tmpbss);
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if ((error = copyout(&tmpbss, nbss, sizeof(tmpbss))) != 0)
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return error;
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} else
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nbss = NULL;
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SCARG(&sa, ss) = nbss;
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SCARG(&sa, oss) = obss;
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if ((error = sigaltstack(p, &sa)) != 0)
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return error;
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if (obss != NULL) {
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if ((error = copyin(obss, &tmpbss, sizeof(tmpbss))) != 0)
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return error;
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bsd_to_svr4_sigaltstack(&tmpbss, &tmpsss);
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if ((error = copyout(&tmpsss, osss, sizeof(tmpsss))) != 0)
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return error;
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}
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return 0;
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}
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/*
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* Stolen from the ibcs2 one
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*/
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int
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svr4_sys_signal(p, uap)
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register struct proc *p;
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struct svr4_sys_signal_args *uap;
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{
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int signum;
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int error, *retval = p->p_retval;
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caddr_t sg = stackgap_init();
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DPRINTF(("@@@ svr4_sys_signal(%d)\n", p->p_pid));
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signum = SVR4_SVR42BSD_SIG(SVR4_SIGNO(SCARG(uap, signum)));
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if (signum <= 0 || signum > SVR4_NSIG)
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return (EINVAL);
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switch (SVR4_SIGCALL(SCARG(uap, signum))) {
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case SVR4_SIGDEFER_MASK:
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if (SCARG(uap, handler) == SVR4_SIG_HOLD)
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goto sighold;
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/* FALLTHROUGH */
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case SVR4_SIGNAL_MASK:
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{
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struct sigaction_args sa_args;
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struct sigaction *nbsa, *obsa, sa;
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nbsa = stackgap_alloc(&sg, sizeof(struct sigaction));
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obsa = stackgap_alloc(&sg, sizeof(struct sigaction));
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SCARG(&sa_args, sig) = signum;
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SCARG(&sa_args, act) = nbsa;
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SCARG(&sa_args, oact) = obsa;
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sa.sa_handler = (sig_t) SCARG(uap, handler);
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SIGEMPTYSET(sa.sa_mask);
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sa.sa_flags = 0;
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if (signum != SIGALRM)
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sa.sa_flags = SA_RESTART;
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if ((error = copyout(&sa, nbsa, sizeof(sa))) != 0)
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return error;
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if ((error = sigaction(p, &sa_args)) != 0) {
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DPRINTF(("signal: sigaction failed: %d\n",
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error));
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*retval = (int)SVR4_SIG_ERR;
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return error;
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}
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if ((error = copyin(obsa, &sa, sizeof(sa))) != 0)
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return error;
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*retval = (int)sa.sa_handler;
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return 0;
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}
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case SVR4_SIGHOLD_MASK:
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sighold:
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{
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struct sigprocmask_args sa;
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sigset_t *set;
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set = stackgap_alloc(&sg, sizeof(sigset_t));
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SIGEMPTYSET(*set);
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SIGADDSET(*set, signum);
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SCARG(&sa, how) = SIG_BLOCK;
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SCARG(&sa, set) = set;
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SCARG(&sa, oset) = NULL;
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return sigprocmask(p, &sa);
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}
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case SVR4_SIGRELSE_MASK:
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{
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struct sigprocmask_args sa;
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sigset_t *set;
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set = stackgap_alloc(&sg, sizeof(sigset_t));
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SIGEMPTYSET(*set);
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SIGADDSET(*set, signum);
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SCARG(&sa, how) = SIG_UNBLOCK;
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SCARG(&sa, set) = set;
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SCARG(&sa, oset) = NULL;
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return sigprocmask(p, &sa);
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}
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case SVR4_SIGIGNORE_MASK:
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{
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struct sigaction_args sa_args;
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struct sigaction *bsa, sa;
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bsa = stackgap_alloc(&sg, sizeof(struct sigaction));
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SCARG(&sa_args, sig) = signum;
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SCARG(&sa_args, act) = bsa;
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SCARG(&sa_args, oact) = NULL;
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sa.sa_handler = SIG_IGN;
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SIGEMPTYSET(sa.sa_mask);
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sa.sa_flags = 0;
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if ((error = copyout(&sa, bsa, sizeof(sa))) != 0)
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return error;
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if ((error = sigaction(p, &sa_args)) != 0) {
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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 SVR4_SIGPAUSE_MASK:
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{
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struct sigsuspend_args sa;
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sigset_t *set;
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|
|
|
set = stackgap_alloc(&sg, sizeof(sigset_t));
|
|
*set = p->p_sigmask;
|
|
SIGDELSET(*set, signum);
|
|
SCARG(&sa, sigmask) = set;
|
|
return sigsuspend(p, &sa);
|
|
}
|
|
|
|
default:
|
|
return (ENOSYS);
|
|
}
|
|
}
|
|
|
|
|
|
int
|
|
svr4_sys_sigprocmask(p, uap)
|
|
struct proc *p;
|
|
struct svr4_sys_sigprocmask_args *uap;
|
|
{
|
|
svr4_sigset_t sss;
|
|
sigset_t bss;
|
|
int error = 0, *retval;
|
|
|
|
retval = p->p_retval;
|
|
if (SCARG(uap, oset) != NULL) {
|
|
/* Fix the return value first if needed */
|
|
bsd_to_svr4_sigset(&p->p_sigmask, &sss);
|
|
if ((error = copyout(&sss, SCARG(uap, oset), sizeof(sss))) != 0)
|
|
return error;
|
|
}
|
|
|
|
if (SCARG(uap, set) == NULL)
|
|
/* Just examine */
|
|
return 0;
|
|
|
|
if ((error = copyin(SCARG(uap, set), &sss, sizeof(sss))) != 0)
|
|
return error;
|
|
|
|
svr4_to_bsd_sigset(&sss, &bss);
|
|
|
|
(void) splhigh();
|
|
|
|
switch (SCARG(uap, how)) {
|
|
case SVR4_SIG_BLOCK:
|
|
SIGSETOR(p->p_sigmask, bss);
|
|
SIG_CANTMASK(p->p_sigmask);
|
|
break;
|
|
|
|
case SVR4_SIG_UNBLOCK:
|
|
SIGSETNAND(p->p_sigmask, bss);
|
|
break;
|
|
|
|
case SVR4_SIG_SETMASK:
|
|
p->p_sigmask = bss;
|
|
SIG_CANTMASK(p->p_sigmask);
|
|
break;
|
|
|
|
default:
|
|
error = EINVAL;
|
|
break;
|
|
}
|
|
|
|
(void) spl0();
|
|
|
|
return error;
|
|
}
|
|
|
|
int
|
|
svr4_sys_sigpending(p, uap)
|
|
struct proc *p;
|
|
struct svr4_sys_sigpending_args *uap;
|
|
{
|
|
sigset_t bss;
|
|
int *retval;
|
|
svr4_sigset_t sss;
|
|
|
|
DPRINTF(("@@@ svr4_sys_sigpending(%d)\n", p->p_pid));
|
|
retval = p->p_retval;
|
|
switch (SCARG(uap, what)) {
|
|
case 1: /* sigpending */
|
|
if (SCARG(uap, mask) == NULL)
|
|
return 0;
|
|
bss = p->p_siglist;
|
|
SIGSETAND(bss, p->p_sigmask);
|
|
bsd_to_svr4_sigset(&bss, &sss);
|
|
break;
|
|
|
|
case 2: /* sigfillset */
|
|
svr4_sigfillset(&sss);
|
|
#if defined(DEBUG_SVR4)
|
|
{
|
|
int i;
|
|
for (i = 0; i < 4; i++)
|
|
DPRINTF(("new sigset[%d] = %lx\n", i, (long)sss.bits[i]));
|
|
}
|
|
#endif
|
|
break;
|
|
|
|
default:
|
|
return EINVAL;
|
|
}
|
|
|
|
return copyout(&sss, SCARG(uap, mask), sizeof(sss));
|
|
}
|
|
|
|
int
|
|
svr4_sys_sigsuspend(p, uap)
|
|
register struct proc *p;
|
|
struct svr4_sys_sigsuspend_args *uap;
|
|
{
|
|
svr4_sigset_t sss;
|
|
sigset_t *bss;
|
|
struct sigsuspend_args sa;
|
|
int error;
|
|
caddr_t sg = stackgap_init();
|
|
|
|
if ((error = copyin(SCARG(uap, ss), &sss, sizeof(sss))) != 0)
|
|
return error;
|
|
|
|
bss = stackgap_alloc(&sg, sizeof(sigset_t));
|
|
svr4_to_bsd_sigset(&sss, bss);
|
|
|
|
SCARG(&sa, sigmask) = bss;
|
|
return sigsuspend(p, &sa);
|
|
}
|
|
|
|
|
|
int
|
|
svr4_sys_kill(p, uap)
|
|
register struct proc *p;
|
|
struct svr4_sys_kill_args *uap;
|
|
{
|
|
struct kill_args ka;
|
|
|
|
SCARG(&ka, pid) = SCARG(uap, pid);
|
|
SCARG(&ka, signum) = SVR4_SVR42BSD_SIG(SCARG(uap, signum));
|
|
return kill(p, &ka);
|
|
}
|
|
|
|
|
|
int
|
|
svr4_sys_context(p, uap)
|
|
register struct proc *p;
|
|
struct svr4_sys_context_args *uap;
|
|
{
|
|
struct svr4_ucontext uc;
|
|
int error;
|
|
|
|
switch (uap->func) {
|
|
case 0:
|
|
DPRINTF(("getcontext(%p)\n", uap->uc));
|
|
svr4_getcontext(p, &uc, &p->p_sigmask,
|
|
p->p_sigstk.ss_flags & SS_ONSTACK);
|
|
return copyout(&uc, uap->uc, sizeof(uc));
|
|
|
|
case 1:
|
|
DPRINTF(("setcontext(%p)\n", uap->uc));
|
|
if ((error = copyin(uap->uc, &uc, sizeof(uc))) != 0)
|
|
return error;
|
|
DPRINTF(("uc_flags = %lx\n", uc.uc_flags));
|
|
#if defined(DEBUG_SVR4)
|
|
{
|
|
int i;
|
|
for (i = 0; i < 4; i++)
|
|
DPRINTF(("uc_sigmask[%d] = %lx\n", i,
|
|
uc.uc_sigmask.bits[i]));
|
|
}
|
|
#endif
|
|
return svr4_setcontext(p, &uc);
|
|
|
|
default:
|
|
DPRINTF(("context(%d, %p)\n", uap->func,
|
|
uap->uc));
|
|
return ENOSYS;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
svr4_sys_pause(p, uap)
|
|
register struct proc *p;
|
|
struct svr4_sys_pause_args *uap;
|
|
{
|
|
struct sigsuspend_args bsa;
|
|
|
|
SCARG(&bsa, sigmask) = &p->p_sigmask;
|
|
return sigsuspend(p, &bsa);
|
|
}
|