NetBSD/sys/compat/linux/common/linux_sig_notalpha.c

175 lines
4.9 KiB
C

/* $NetBSD: linux_sig_notalpha.c,v 1.22 2000/03/30 11:27:17 augustss Exp $ */
/*-
* Copyright (c) 1995, 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Frank van der Linden and Eric Haszlakiewicz.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* heavily from: svr4_signal.c,v 1.7 1995/01/09 01:04:21 christos Exp
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/filedesc.h>
#include <sys/mount.h>
#include <sys/kernel.h>
#include <sys/signal.h>
#include <sys/signalvar.h>
#include <sys/syscallargs.h>
#include <compat/linux/common/linux_types.h>
#include <compat/linux/common/linux_signal.h>
#include <compat/linux/common/linux_util.h>
#include <compat/linux/linux_syscallargs.h>
/* Used on: arm, i386, m68k, mips, sparc, sparc64 */
/* Not used on: alpha */
/*
* The Linux signal() system call. I think that the signal() in the C
* library actually calls sigaction, so I doubt this one is ever used.
* But hey, it can't hurt having it here. The same restrictions as for
* sigaction() apply.
*/
int
linux_sys_signal(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct linux_sys_signal_args /* {
syscallarg(int) signum;
syscallarg(linux_handler_t) handler;
} */ *uap = v;
struct sigaction nbsa, obsa;
int error, sig;
*retval = -1;
sig = SCARG(uap, signum);
if (sig < 0 || sig >= LINUX__NSIG)
return (EINVAL);
nbsa.sa_handler = SCARG(uap, handler);
sigemptyset(&nbsa.sa_mask);
nbsa.sa_flags = SA_RESETHAND | SA_NODEFER;
error = sigaction1(p, linux_to_native_sig[sig],
&nbsa, &obsa);
if (error == 0)
*retval = (int)obsa.sa_handler;
return (error);
}
/* ARGSUSED */
int
linux_sys_siggetmask(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
sigset_t bss;
linux_old_sigset_t lss;
int error;
error = sigprocmask1(p, SIG_SETMASK, 0, &bss);
if (error)
return (error);
native_to_linux_old_sigset(&bss, &lss);
return (0);
}
/*
* The following three functions fiddle with a process' signal mask.
* Convert the signal masks because of the different signal
* values for Linux. The need for this is the reason why
* they are here, and have not been mapped directly.
*/
int
linux_sys_sigsetmask(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct linux_sys_sigsetmask_args /* {
syscallarg(linux_old_sigset_t) mask;
} */ *uap = v;
sigset_t nbss, obss;
linux_old_sigset_t nlss, olss;
int error;
nlss = SCARG(uap, mask);
linux_old_to_native_sigset(&nlss, &nbss);
error = sigprocmask1(p, SIG_SETMASK, &nbss, &obss);
if (error)
return (error);
native_to_linux_old_sigset(&obss, &olss);
*retval = olss;
return (0);
}
int
linux_sys_sigprocmask(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct linux_sys_sigprocmask_args /* {
syscallarg(int) how;
syscallarg(const linux_old_sigset_t *) set;
syscallarg(linux_old_sigset_t *) oset;
} */ *uap = v;
return(linux_sigprocmask1(p, SCARG(uap, how),
SCARG(uap, set), SCARG(uap, oset)));
}
/*
* The deprecated pause(2), which is really just an instance
* of sigsuspend(2).
*/
int
linux_sys_pause(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
return (sigsuspend1(p, 0));
}