111 lines
3.7 KiB
C
111 lines
3.7 KiB
C
/* $NetBSD: linux_sigaction.c,v 1.33 2008/04/28 20:23:44 martin 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.
|
|
*
|
|
* 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/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: linux_sigaction.c,v 1.33 2008/04/28 20:23:44 martin 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/common/linux_ipc.h>
|
|
#include <compat/linux/common/linux_sem.h>
|
|
|
|
#include <compat/linux/linux_syscallargs.h>
|
|
|
|
/* Used on: alpha (aka osf_sigaction), arm, i386, m68k, mips, ppc */
|
|
/* Not used on: sparc, sparc64, amd64 */
|
|
|
|
#ifndef __amd64__
|
|
/*
|
|
* The Linux sigaction() system call. Do the usual conversions,
|
|
* and just call sigaction().
|
|
*/
|
|
int
|
|
linux_sys_sigaction(struct lwp *l, const struct linux_sys_sigaction_args *uap, register_t *retval)
|
|
{
|
|
/* {
|
|
syscallarg(int) signum;
|
|
syscallarg(const struct linux_old_sigaction *) nsa;
|
|
syscallarg(struct linux_old_sigaction *) osa;
|
|
} */
|
|
struct linux_old_sigaction nlsa, olsa;
|
|
struct sigaction nbsa, obsa;
|
|
int error, sig;
|
|
|
|
/* XXX XAX handle switch to RT signal handler */
|
|
/* XXX XAX and update emuldata->ps_siginfo. */
|
|
|
|
if (SCARG(uap, nsa)) {
|
|
error = copyin(SCARG(uap, nsa), &nlsa, sizeof(nlsa));
|
|
if (error)
|
|
return (error);
|
|
linux_old_to_native_sigaction(&nbsa, &nlsa);
|
|
}
|
|
sig = SCARG(uap, signum);
|
|
if (sig < 0 || sig >= LINUX__NSIG)
|
|
return (EINVAL);
|
|
if (sig > 0 && !linux_to_native_signo[sig]) {
|
|
/* Pretend that we did something useful for unknown signals. */
|
|
obsa.sa_handler = SIG_IGN;
|
|
sigemptyset(&obsa.sa_mask);
|
|
obsa.sa_flags = 0;
|
|
} else {
|
|
error = sigaction1(l, linux_to_native_signo[sig],
|
|
SCARG(uap, nsa) ? &nbsa : 0, SCARG(uap, osa) ? &obsa : 0,
|
|
NULL, 0);
|
|
if (error)
|
|
return (error);
|
|
}
|
|
if (SCARG(uap, osa)) {
|
|
native_to_linux_old_sigaction(&olsa, &obsa);
|
|
error = copyout(&olsa, SCARG(uap, osa), sizeof(olsa));
|
|
if (error)
|
|
return (error);
|
|
}
|
|
return (0);
|
|
}
|
|
#endif /* !amd64 */
|