444 lines
11 KiB
C
444 lines
11 KiB
C
/* $NetBSD: netbsd32_signal.c,v 1.30 2008/05/29 14:51:26 mrg Exp $ */
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/*
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* Copyright (c) 1998, 2001 Matthew R. Green
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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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*
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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,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* 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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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: netbsd32_signal.c,v 1.30 2008/05/29 14:51:26 mrg Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/mount.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/signalvar.h>
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#include <sys/proc.h>
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#include <sys/wait.h>
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#include <sys/dirent.h>
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#include <uvm/uvm_extern.h>
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#include <compat/netbsd32/netbsd32.h>
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#include <compat/netbsd32/netbsd32_conv.h>
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#include <compat/netbsd32/netbsd32_syscallargs.h>
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#include <compat/sys/signal.h>
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#include <compat/sys/signalvar.h>
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#include <compat/sys/siginfo.h>
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#include <compat/sys/ucontext.h>
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#include <compat/common/compat_sigaltstack.h>
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#ifdef unused
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static void netbsd32_si32_to_si(siginfo_t *, const siginfo32_t *);
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#endif
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int
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netbsd32_sigaction(struct lwp *l, const struct netbsd32_sigaction_args *uap, register_t *retval)
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{
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/* {
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syscallarg(int) signum;
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syscallarg(const netbsd32_sigactionp_t) nsa;
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syscallarg(netbsd32_sigactionp_t) osa;
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} */
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struct sigaction nsa, osa;
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struct netbsd32_sigaction *sa32p, sa32;
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int error;
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if (SCARG_P32(uap, nsa)) {
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sa32p = SCARG_P32(uap, nsa);
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if (copyin(sa32p, &sa32, sizeof(sa32)))
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return EFAULT;
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nsa.sa_handler = (void *)NETBSD32PTR64(sa32.netbsd32_sa_handler);
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nsa.sa_mask = sa32.netbsd32_sa_mask;
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nsa.sa_flags = sa32.netbsd32_sa_flags;
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}
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error = sigaction1(l, SCARG(uap, signum),
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SCARG_P32(uap, nsa) ? &nsa : 0,
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SCARG_P32(uap, osa) ? &osa : 0,
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NULL, 0);
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if (error)
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return (error);
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if (SCARG_P32(uap, osa)) {
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NETBSD32PTR32(sa32.netbsd32_sa_handler, osa.sa_handler);
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sa32.netbsd32_sa_mask = osa.sa_mask;
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sa32.netbsd32_sa_flags = osa.sa_flags;
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sa32p = SCARG_P32(uap, osa);
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if (copyout(&sa32, sa32p, sizeof(sa32)))
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return EFAULT;
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}
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return (0);
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}
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int
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netbsd32___sigaltstack14(struct lwp *l, const struct netbsd32___sigaltstack14_args *uap, register_t *retval)
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{
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/* {
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syscallarg(const netbsd32_sigaltstackp_t) nss;
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syscallarg(netbsd32_sigaltstackp_t) oss;
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} */
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compat_sigaltstack(uap, netbsd32_sigaltstack, SS_ONSTACK, SS_DISABLE);
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}
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/* ARGSUSED */
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int
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netbsd32___sigaction14(struct lwp *l, const struct netbsd32___sigaction14_args *uap, register_t *retval)
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{
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/* {
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syscallarg(int) signum;
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syscallarg(const struct sigaction *) nsa;
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syscallarg(struct sigaction *) osa;
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} */
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struct netbsd32_sigaction sa32;
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struct sigaction nsa, osa;
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int error;
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if (SCARG_P32(uap, nsa)) {
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error = copyin(SCARG_P32(uap, nsa), &sa32, sizeof(sa32));
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if (error)
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return (error);
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nsa.sa_handler = NETBSD32PTR64(sa32.netbsd32_sa_handler);
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nsa.sa_mask = sa32.netbsd32_sa_mask;
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nsa.sa_flags = sa32.netbsd32_sa_flags;
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}
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error = sigaction1(l, SCARG(uap, signum),
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SCARG_P32(uap, nsa) ? &nsa : 0,
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SCARG_P32(uap, osa) ? &osa : 0,
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NULL, 0);
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if (error)
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return (error);
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if (SCARG_P32(uap, osa)) {
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NETBSD32PTR32(sa32.netbsd32_sa_handler, osa.sa_handler);
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sa32.netbsd32_sa_mask = osa.sa_mask;
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sa32.netbsd32_sa_flags = osa.sa_flags;
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error = copyout(&sa32, SCARG_P32(uap, osa), sizeof(sa32));
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if (error)
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return (error);
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}
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return (0);
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}
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/* ARGSUSED */
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int
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netbsd32___sigaction_sigtramp(struct lwp *l, const struct netbsd32___sigaction_sigtramp_args *uap, register_t *retval)
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{
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/* {
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syscallarg(int) signum;
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syscallarg(const netbsd32_sigactionp_t) nsa;
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syscallarg(netbsd32_sigactionp_t) osa;
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syscallarg(netbsd32_voidp) tramp;
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syscallarg(int) vers;
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} */
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struct netbsd32_sigaction sa32;
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struct sigaction nsa, osa;
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int error;
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if (SCARG_P32(uap, nsa)) {
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error = copyin(SCARG_P32(uap, nsa), &sa32, sizeof(sa32));
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if (error)
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return (error);
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nsa.sa_handler = NETBSD32PTR64(sa32.netbsd32_sa_handler);
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nsa.sa_mask = sa32.netbsd32_sa_mask;
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nsa.sa_flags = sa32.netbsd32_sa_flags;
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}
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error = sigaction1(l, SCARG(uap, signum),
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SCARG_P32(uap, nsa) ? &nsa : 0,
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SCARG_P32(uap, osa) ? &osa : 0,
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SCARG_P32(uap, tramp), SCARG(uap, vers));
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if (error)
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return (error);
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if (SCARG_P32(uap, osa)) {
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NETBSD32PTR32(sa32.netbsd32_sa_handler, osa.sa_handler);
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sa32.netbsd32_sa_mask = osa.sa_mask;
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sa32.netbsd32_sa_flags = osa.sa_flags;
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error = copyout(&sa32, SCARG_P32(uap, osa), sizeof(sa32));
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if (error)
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return (error);
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}
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return (0);
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}
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#ifdef unused
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static void
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netbsd32_si32_to_si(siginfo_t *si, const siginfo32_t *si32)
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{
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memset(si, 0, sizeof (*si));
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si->si_signo = si32->si_signo;
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si->si_code = si32->si_code;
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si->si_errno = si32->si_errno;
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switch (si32->si_signo) {
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case SIGILL:
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case SIGBUS:
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case SIGSEGV:
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case SIGFPE:
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case SIGTRAP:
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si->si_addr = NETBSD32PTR64(si32->si_addr);
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si->si_trap = si32->si_trap;
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break;
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case SIGALRM:
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case SIGVTALRM:
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case SIGPROF:
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si->si_pid = si32->si_pid;
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si->si_uid = si32->si_uid;
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/*
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* XXX sival_ptr is currently unused.
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*/
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si->si_value.sival_int = si32->si_value.sival_int;
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break;
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case SIGCHLD:
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si->si_pid = si32->si_pid;
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si->si_uid = si32->si_uid;
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si->si_utime = si32->si_utime;
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si->si_stime = si32->si_stime;
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break;
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case SIGURG:
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case SIGIO:
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si->si_band = si32->si_band;
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si->si_fd = si32->si_fd;
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break;
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}
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}
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#endif
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void
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netbsd32_si_to_si32(siginfo32_t *si32, const siginfo_t *si)
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{
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memset(si32, 0, sizeof (*si32));
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si32->si_signo = si->si_signo;
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si32->si_code = si->si_code;
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si32->si_errno = si->si_errno;
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switch (si32->si_signo) {
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case 0: /* SA */
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si32->si_value.sival_int = si->si_value.sival_int;
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break;
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case SIGILL:
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case SIGBUS:
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case SIGSEGV:
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case SIGFPE:
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case SIGTRAP:
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si32->si_addr = (uint32_t)(uintptr_t)si->si_addr;
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si32->si_trap = si->si_trap;
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break;
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case SIGALRM:
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case SIGVTALRM:
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case SIGPROF:
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si32->si_pid = si->si_pid;
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si32->si_uid = si->si_uid;
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/*
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* XXX sival_ptr is currently unused.
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*/
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si32->si_value.sival_int = si->si_value.sival_int;
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break;
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case SIGCHLD:
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si32->si_pid = si->si_pid;
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si32->si_uid = si->si_uid;
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si32->si_status = si->si_status;
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si32->si_utime = si->si_utime;
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si32->si_stime = si->si_stime;
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break;
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case SIGURG:
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case SIGIO:
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si32->si_band = si->si_band;
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si32->si_fd = si->si_fd;
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break;
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}
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}
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void
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getucontext32(struct lwp *l, ucontext32_t *ucp)
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{
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struct proc *p = l->l_proc;
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KASSERT(mutex_owned(p->p_lock));
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ucp->uc_flags = 0;
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ucp->uc_link = (uint32_t)(intptr_t)l->l_ctxlink;
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ucp->uc_sigmask = l->l_sigmask;
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ucp->uc_flags |= _UC_SIGMASK;
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/*
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* The (unsupplied) definition of the `current execution stack'
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* in the System V Interface Definition appears to allow returning
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* the main context stack.
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*/
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if ((l->l_sigstk.ss_flags & SS_ONSTACK) == 0) {
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ucp->uc_stack.ss_sp = USRSTACK32;
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ucp->uc_stack.ss_size = ctob(p->p_vmspace->vm_ssize);
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ucp->uc_stack.ss_flags = 0; /* XXX, def. is Very Fishy */
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} else {
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/* Simply copy alternate signal execution stack. */
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ucp->uc_stack.ss_sp =
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(uint32_t)(intptr_t)l->l_sigstk.ss_sp;
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ucp->uc_stack.ss_size = l->l_sigstk.ss_size;
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ucp->uc_stack.ss_flags = l->l_sigstk.ss_flags;
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}
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ucp->uc_flags |= _UC_STACK;
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mutex_exit(p->p_lock);
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cpu_getmcontext32(l, &ucp->uc_mcontext, &ucp->uc_flags);
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mutex_enter(p->p_lock);
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}
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/* ARGSUSED */
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int
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netbsd32_getcontext(struct lwp *l, const struct netbsd32_getcontext_args *uap, register_t *retval)
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{
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/* {
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syscallarg(netbsd32_ucontextp) ucp;
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} */
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struct proc *p = l->l_proc;
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ucontext32_t uc;
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mutex_enter(p->p_lock);
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getucontext32(l, &uc);
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mutex_exit(p->p_lock);
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return copyout(&uc, SCARG_P32(uap, ucp), sizeof (ucontext32_t));
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}
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int
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setucontext32(struct lwp *l, const ucontext32_t *ucp)
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{
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struct proc *p = l->l_proc;
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int error;
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KASSERT(mutex_owned(p->p_lock));
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if ((ucp->uc_flags & _UC_SIGMASK) != 0) {
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error = sigprocmask1(l, SIG_SETMASK, &ucp->uc_sigmask, NULL);
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if (error != 0)
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return error;
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}
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mutex_exit(p->p_lock);
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error = cpu_setmcontext32(l, &ucp->uc_mcontext, ucp->uc_flags);
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mutex_enter(p->p_lock);
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if (error != 0)
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return (error);
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l->l_ctxlink = (void *)(intptr_t)ucp->uc_link;
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/*
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* If there was stack information, update whether or not we are
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* still running on an alternate signal stack.
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*/
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if ((ucp->uc_flags & _UC_STACK) != 0) {
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if (ucp->uc_stack.ss_flags & SS_ONSTACK)
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l->l_sigstk.ss_flags |= SS_ONSTACK;
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else
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l->l_sigstk.ss_flags &= ~SS_ONSTACK;
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}
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return 0;
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}
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/* ARGSUSED */
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int
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netbsd32_setcontext(struct lwp *l, const struct netbsd32_setcontext_args *uap, register_t *retval)
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{
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/* {
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syscallarg(netbsd32_ucontextp) ucp;
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} */
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ucontext32_t uc;
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int error;
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struct proc *p = l->l_proc;
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error = copyin(SCARG_P32(uap, ucp), &uc, sizeof (uc));
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if (error)
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return (error);
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if (!(uc.uc_flags & _UC_CPU))
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return (EINVAL);
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mutex_enter(p->p_lock);
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error = setucontext32(l, &uc);
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mutex_exit(p->p_lock);
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if (error)
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return (error);
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return (EJUSTRETURN);
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}
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static int
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netbsd32_sigtimedwait_put_info(const void *src, void *dst, size_t size)
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{
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const siginfo_t *info = src;
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siginfo32_t info32;
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netbsd32_si_to_si32(&info32, info);
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return copyout(&info32, dst, sizeof(info32));
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}
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static int
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netbsd32_sigtimedwait_fetch_timeout(const void *src, void *dst, size_t size)
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{
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struct timespec *ts = dst;
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struct netbsd32_timespec ts32;
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int error;
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error = copyin(src, &ts32, sizeof(ts32));
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if (error)
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return error;
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netbsd32_to_timespec(&ts32, ts);
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return 0;
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}
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static int
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netbsd32_sigtimedwait_put_timeout(const void *src, void *dst, size_t size)
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{
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const struct timespec *ts = src;
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struct netbsd32_timespec ts32;
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netbsd32_from_timespec(ts, &ts32);
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return copyout(&ts32, dst, sizeof(ts32));
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}
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int
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netbsd32___sigtimedwait(struct lwp *l, const struct netbsd32___sigtimedwait_args *uap, register_t *retval)
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{
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/* {
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syscallarg(netbsd32_sigsetp_t) set;
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syscallarg(netbsd32_siginfop_t) info;
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syscallarg(netbsd32_timespecp_t) timeout;
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} */
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struct sys___sigtimedwait_args ua;
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NETBSD32TOP_UAP(set, const sigset_t);
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NETBSD32TOP_UAP(info, siginfo_t);
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NETBSD32TOP_UAP(timeout, struct timespec);
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return __sigtimedwait1(l, &ua, retval, netbsd32_sigtimedwait_put_info,
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netbsd32_sigtimedwait_fetch_timeout,
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netbsd32_sigtimedwait_put_timeout);
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}
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