393 lines
10 KiB
C
393 lines
10 KiB
C
/* $NetBSD: netbsd32_signal.c,v 1.9 2005/06/02 10:27:43 drochner 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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* 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,
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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 1.9 2005/06/02 10:27:43 drochner 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 <uvm/uvm_extern.h>
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#include <compat/netbsd32/netbsd32.h>
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#include <compat/netbsd32/netbsd32_syscallargs.h>
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int
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netbsd32_sigaction(l, v, retval)
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struct lwp *l;
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void *v;
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register_t *retval;
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{
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struct netbsd32_sigaction_args /* {
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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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} */ *uap = v;
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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(uap, nsa)) {
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sa32p =
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(struct netbsd32_sigaction *)NETBSD32PTR64(SCARG(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->l_proc, SCARG(uap, signum),
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SCARG(uap, nsa) ? &nsa : 0,
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SCARG(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(uap, osa)) {
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sa32.netbsd32_sa_handler = (netbsd32_sigactionp_t)(u_long)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 =
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(struct netbsd32_sigaction *)NETBSD32PTR64(SCARG(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(l, v, retval)
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struct lwp *l;
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void *v;
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register_t *retval;
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{
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struct netbsd32___sigaltstack14_args /* {
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syscallarg(const netbsd32_sigaltstackp_t) nss;
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syscallarg(netbsd32_sigaltstackp_t) oss;
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} */ *uap = v;
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struct netbsd32_sigaltstack s32;
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struct sigaltstack nss, oss;
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int error;
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if (SCARG(uap, nss)) {
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error = copyin((caddr_t)NETBSD32PTR64(SCARG(uap, nss)), &s32,
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sizeof(s32));
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if (error)
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return (error);
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nss.ss_sp = (void *)NETBSD32PTR64(s32.ss_sp);
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nss.ss_size = (size_t)s32.ss_size;
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nss.ss_flags = s32.ss_flags;
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}
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error = sigaltstack1(l->l_proc,
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SCARG(uap, nss) ? &nss : 0, SCARG(uap, oss) ? &oss : 0);
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if (error)
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return (error);
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if (SCARG(uap, oss)) {
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s32.ss_sp = (netbsd32_voidp)(u_long)oss.ss_sp;
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s32.ss_size = (netbsd32_size_t)oss.ss_size;
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s32.ss_flags = oss.ss_flags;
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error = copyout(&s32, (caddr_t)NETBSD32PTR64(SCARG(uap, oss)),
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sizeof(s32));
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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___sigaction14(l, v, retval)
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struct lwp *l;
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void *v;
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register_t *retval;
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{
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struct netbsd32___sigaction14_args /* {
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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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} */ *uap = v;
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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(uap, nsa)) {
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error = copyin((caddr_t)NETBSD32PTR64(SCARG(uap, nsa)), &sa32,
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sizeof(sa32));
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if (error)
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return (error);
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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->l_proc, SCARG(uap, signum),
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SCARG(uap, nsa) ? &nsa : 0, SCARG(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(uap, osa)) {
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sa32.netbsd32_sa_handler = (netbsd32_voidp)(u_long)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, (caddr_t)NETBSD32PTR64(SCARG(uap, osa)),
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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(l, v, retval)
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struct lwp *l;
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void *v;
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register_t *retval;
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{
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struct netbsd32___sigaction_sigtramp_args /* {
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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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} */ *uap = v;
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struct proc *p = l->l_proc;
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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(uap, nsa)) {
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error = copyin((caddr_t)NETBSD32PTR64(SCARG(uap, nsa)), &sa32,
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sizeof(sa32));
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if (error)
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return (error);
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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(p, SCARG(uap, signum),
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SCARG(uap, nsa) ? &nsa : 0, SCARG(uap, osa) ? &osa : 0,
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NETBSD32PTR64(SCARG(uap, tramp)), SCARG(uap, vers));
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if (error)
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return (error);
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if (SCARG(uap, osa)) {
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sa32.netbsd32_sa_handler = (netbsd32_voidp)(u_long)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, (caddr_t)NETBSD32PTR64(SCARG(uap, osa)),
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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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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 = (void *)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_sigval.sival_int = si32->si_sigval.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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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 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_sigval.sival_int = si->si_sigval.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;
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p = l->l_proc;
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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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(void)sigprocmask1(p, 0, NULL, &ucp->uc_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 ((p->p_sigctx.ps_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)p->p_sigctx.ps_sigstk.ss_sp;
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ucp->uc_stack.ss_size = p->p_sigctx.ps_sigstk.ss_size;
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ucp->uc_stack.ss_flags = p->p_sigctx.ps_sigstk.ss_flags;
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}
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ucp->uc_flags |= _UC_STACK;
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cpu_getmcontext32(l, &ucp->uc_mcontext, &ucp->uc_flags);
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}
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/* ARGSUSED */
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int
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netbsd32_getcontext(struct lwp *l, void *v, register_t *retval)
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{
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struct netbsd32_getcontext_args /* {
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syscallarg(netbsd32_ucontextp) ucp;
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} */ *uap = v;
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ucontext32_t uc;
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getucontext32(l, &uc);
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return copyout(&uc, NETBSD32PTR64(SCARG(uap, ucp)),
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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;
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int error;
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p = l->l_proc;
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if ((error = cpu_setmcontext32(l, &ucp->uc_mcontext,
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ucp->uc_flags)) != 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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* We might want to take care of the stack portion here but currently
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* don't; see the comment in getucontext().
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*/
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if ((ucp->uc_flags & _UC_SIGMASK) != 0)
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sigprocmask1(p, SIG_SETMASK, &ucp->uc_sigmask, NULL);
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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, void *v, register_t *retval)
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{
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struct netbsd32_setcontext_args /* {
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syscallarg(netbsd32_ucontextp) ucp;
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} */ *uap = v;
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ucontext32_t uc;
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int error;
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void *p;
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p = NETBSD32PTR64(SCARG(uap, ucp));
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if (p == NULL)
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exit1(l, W_EXITCODE(0, 0));
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else if ((error = copyin(p, &uc, sizeof (uc))) != 0 ||
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(error = setucontext32(l, &uc)) != 0)
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return (error);
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return (EJUSTRETURN);
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}
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