NetBSD/sys/compat/common/kern_sig_43.c

280 lines
7.1 KiB
C

/* $NetBSD: kern_sig_43.c,v 1.14 2000/12/17 15:55:47 jdolecek Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Charles M. Hannum.
*
* 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.
*/
#if defined(_KERNEL) && !defined(_LKM)
#include "opt_compat_netbsd.h"
#endif
#include <sys/param.h>
#include <sys/signalvar.h>
#include <sys/resourcevar.h>
#include <sys/namei.h>
#include <sys/vnode.h>
#include <sys/proc.h>
#include <sys/systm.h>
#include <sys/timeb.h>
#include <sys/times.h>
#include <sys/buf.h>
#include <sys/acct.h>
#include <sys/file.h>
#include <sys/kernel.h>
#include <sys/wait.h>
#include <sys/ktrace.h>
#include <sys/syslog.h>
#include <sys/stat.h>
#include <sys/core.h>
#include <sys/mount.h>
#include <sys/syscallargs.h>
#include <machine/cpu.h>
#include <sys/user.h> /* for coredump */
void compat_43_sigmask_to_sigset __P((const int *, sigset_t *));
void compat_43_sigset_to_sigmask __P((const sigset_t *, int *));
void compat_43_sigvec_to_sigaction __P((const struct sigvec *, struct sigaction *));
void compat_43_sigaction_to_sigvec __P((const struct sigaction *, struct sigvec *));
void compat_43_sigstack_to_sigaltstack __P((const struct sigstack *, struct sigaltstack *));
void compat_43_sigaltstack_to_sigstack __P((const struct sigaltstack *, struct sigstack *));
void
compat_43_sigmask_to_sigset(sm, ss)
const int *sm;
sigset_t *ss;
{
ss->__bits[0] = *sm;
ss->__bits[1] = 0;
ss->__bits[2] = 0;
ss->__bits[3] = 0;
}
void
compat_43_sigset_to_sigmask(ss, sm)
const sigset_t *ss;
int *sm;
{
*sm = ss->__bits[0];
}
void
compat_43_sigvec_to_sigaction(sv, sa)
const struct sigvec *sv;
struct sigaction *sa;
{
sa->sa_handler = sv->sv_handler;
compat_43_sigmask_to_sigset(&sv->sv_mask, &sa->sa_mask);
sa->sa_flags = sv->sv_flags ^ SA_RESTART;
}
void
compat_43_sigaction_to_sigvec(sa, sv)
const struct sigaction *sa;
struct sigvec *sv;
{
sv->sv_handler = sa->sa_handler;
compat_43_sigset_to_sigmask(&sa->sa_mask, &sv->sv_mask);
sv->sv_flags = sa->sa_flags ^ SA_RESTART;
}
void
compat_43_sigstack_to_sigaltstack(ss, sa)
const struct sigstack *ss;
struct sigaltstack *sa;
{
sa->ss_sp = ss->ss_sp;
sa->ss_size = SIGSTKSZ; /* Use the recommended size */
sa->ss_flags = 0;
if (ss->ss_onstack)
sa->ss_flags |= SS_ONSTACK;
}
void
compat_43_sigaltstack_to_sigstack(sa, ss)
const struct sigaltstack *sa;
struct sigstack *ss;
{
ss->ss_sp = sa->ss_sp;
if (sa->ss_flags & SS_ONSTACK)
ss->ss_onstack = 1;
else
ss->ss_onstack = 0;
}
int
compat_43_sys_sigblock(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct compat_43_sys_sigblock_args /* {
syscallarg(int) mask;
} */ *uap = v;
int nsm, osm;
sigset_t nss, oss;
int error;
nsm = SCARG(uap, mask);
compat_43_sigmask_to_sigset(&nsm, &nss);
error = sigprocmask1(p, SIG_BLOCK, &nss, &oss);
if (error)
return (error);
compat_43_sigset_to_sigmask(&oss, &osm);
*retval = osm;
return (0);
}
int
compat_43_sys_sigsetmask(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct compat_43_sys_sigsetmask_args /* {
syscallarg(int) mask;
} */ *uap = v;
int nsm, osm;
sigset_t nss, oss;
int error;
nsm = SCARG(uap, mask);
compat_43_sigmask_to_sigset(&nsm, &nss);
error = sigprocmask1(p, SIG_SETMASK, &nss, &oss);
if (error)
return (error);
compat_43_sigset_to_sigmask(&oss, &osm);
*retval = osm;
return (0);
}
/* ARGSUSED */
int
compat_43_sys_sigstack(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct compat_43_sys_sigstack_args /* {
syscallarg(struct sigstack *) nss;
syscallarg(struct sigstack *) oss;
} */ *uap = v;
struct sigstack nss, oss;
struct sigaltstack nsa, osa;
int error;
if (SCARG(uap, nss)) {
error = copyin(SCARG(uap, nss), &nss, sizeof(nss));
if (error)
return (error);
compat_43_sigstack_to_sigaltstack(&nss, &nsa);
}
error = sigaltstack1(p,
SCARG(uap, nss) ? &nsa : 0, SCARG(uap, oss) ? &osa : 0);
if (error)
return (error);
if (SCARG(uap, oss)) {
compat_43_sigaltstack_to_sigstack(&osa, &oss);
error = copyout(&oss, SCARG(uap, oss), sizeof(oss));
if (error)
return (error);
}
return (0);
}
/*
* Generalized interface signal handler, 4.3-compatible.
*/
/* ARGSUSED */
int
compat_43_sys_sigvec(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct compat_43_sys_sigvec_args /* {
syscallarg(int) signum;
syscallarg(const struct sigvec *) nsv;
syscallarg(struct sigvec *) osv;
} */ *uap = v;
struct sigvec nsv, osv;
struct sigaction nsa, osa;
int error;
if (SCARG(uap, nsv)) {
error = copyin(SCARG(uap, nsv), &nsv, sizeof(nsv));
if (error)
return (error);
compat_43_sigvec_to_sigaction(&nsv, &nsa);
}
error = sigaction1(p, SCARG(uap, signum),
SCARG(uap, nsv) ? &nsa : 0, SCARG(uap, osv) ? &osa : 0);
if (error)
return (error);
if (SCARG(uap, osv)) {
compat_43_sigaction_to_sigvec(&osa, &osv);
error = copyout(&osv, SCARG(uap, osv), sizeof(osv));
if (error)
return (error);
}
return (0);
}
/* ARGSUSED */
int
compat_43_sys_killpg(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct compat_43_sys_killpg_args /* {
syscallarg(int) pgid;
syscallarg(int) signum;
} */ *uap = v;
#ifdef COMPAT_09
SCARG(uap, pgid) = (short) SCARG(uap, pgid);
#endif
if ((u_int)SCARG(uap, signum) >= NSIG)
return (EINVAL);
return (killpg1(p, SCARG(uap, signum), SCARG(uap, pgid), 0));
}