155 lines
4.5 KiB
C
155 lines
4.5 KiB
C
/* $NetBSD: linux_sig_notalpha.c,v 1.16 1998/10/04 00:02:41 fvdl Exp $ */
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/*-
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* Copyright (c) 1995, 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Frank van der Linden and Eric Haszlakiewicz.
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* heavily from: svr4_signal.c,v 1.7 1995/01/09 01:04:21 christos Exp
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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/mount.h>
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#include <sys/kernel.h>
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#include <sys/signal.h>
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#include <sys/signalvar.h>
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#include <sys/syscallargs.h>
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#include <compat/linux/common/linux_types.h>
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#include <compat/linux/common/linux_signal.h>
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#include <compat/linux/common/linux_util.h>
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#include <compat/linux/linux_syscallargs.h>
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/* Used on: arm, i386, m68k, mips, sparc, sparc64 */
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/* Not used on: alpha */
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/*
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* The Linux signal() system call. I think that the signal() in the C
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* library actually calls sigaction, so I doubt this one is ever used.
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* But hey, it can't hurt having it here. The same restrictions as for
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* sigaction() apply.
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*/
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int
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linux_sys_signal(p, v, retval)
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register struct proc *p;
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void *v;
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register_t *retval;
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{
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struct linux_sys_signal_args /* {
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syscallarg(int) sig;
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syscallarg(linux_handler_t) handler;
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} */ *uap = v;
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struct sigaction nbsa, obsa;
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int error;
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nbsa.sa_handler = SCARG(uap, handler);
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sigemptyset(&nbsa.sa_mask);
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nbsa.sa_flags = SA_RESETHAND | SA_NODEFER;
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error = sigaction1(p, linux_to_native_sig[SCARG(uap, sig)],
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&nbsa, &obsa);
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if (error)
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return (error);
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*retval = (int)obsa.sa_handler;
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return (0);
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}
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/* ARGSUSED */
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int
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linux_sys_siggetmask(p, v, retval)
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register struct proc *p;
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void *v;
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register_t *retval;
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{
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sigset_t bss;
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linux_old_sigset_t lss;
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int error;
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error = sigprocmask1(p, SIG_SETMASK, 0, &bss);
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if (error)
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return (error);
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native_to_linux_old_sigset(&bss, &lss);
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return (0);
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}
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/*
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* The following three functions fiddle with a process' signal mask.
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* Convert the signal masks because of the different signal
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* values for Linux. The need for this is the reason why
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* they are here, and have not been mapped directly.
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*/
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int
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linux_sys_sigsetmask(p, v, retval)
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register struct proc *p;
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void *v;
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register_t *retval;
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{
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struct linux_sys_sigsetmask_args /* {
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syscallarg(linux_old_sigset_t) mask;
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} */ *uap = v;
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sigset_t nbss, obss;
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linux_old_sigset_t nlss, olss;
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int error;
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nlss = SCARG(uap, mask);
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linux_old_to_native_sigset(&nlss, &nbss);
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error = sigprocmask1(p, SIG_SETMASK, &nbss, &obss);
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if (error)
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return (error);
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native_to_linux_old_sigset(&obss, &olss);
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*retval = olss;
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return (0);
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}
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/*
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* The deprecated pause(2), which is really just an instance
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* of sigsuspend(2).
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*/
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int
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linux_sys_pause(p, v, retval)
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register struct proc *p;
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void *v;
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register_t *retval;
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{
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return (sigsuspend1(p, 0));
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}
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