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/* $OpenBSD: kern_sig_43.c,v 1.3 1996/04/18 21:21:34 niklas Exp $ */
/* $NetBSD: kern_sig_43.c,v 1.7 1996/03/14 19:31:47 christos Exp $ */
/*
* Copyright (c) 1982, 1986, 1989, 1991, 1993
* The Regents of the University of California. All rights reserved.
* (c) UNIX System Laboratories, Inc.
* All or some portions of this file are derived from material licensed
* to the University of California by American Telephone and Telegraph
* Co. or Unix System Laboratories, Inc. and are reproduced herein with
* the permission of UNIX System Laboratories, Inc.
*
* 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 University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
*
* @(#)kern_sig.c 8.7 (Berkeley) 4/18/94
*/
#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 <vm/vm.h>
#include <sys/user.h> /* for coredump */
int
compat_43_sys_sigblock(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct compat_43_sys_sigblock_args /* {
syscallarg(int) mask;
} */ *uap = v;
(void) splhigh();
*retval = p->p_sigmask;
p->p_sigmask |= SCARG(uap, mask) &~ sigcantmask;
(void) spl0();
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;
(void) splhigh();
*retval = p->p_sigmask;
p->p_sigmask = SCARG(uap, mask) &~ sigcantmask;
(void) spl0();
return (0);
}
/* ARGSUSED */
int
compat_43_sys_sigstack(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
register struct compat_43_sys_sigstack_args /* {
syscallarg(struct sigstack *) nss;
syscallarg(struct sigstack *) oss;
} */ *uap = v;
struct sigstack ss;
struct sigacts *psp;
int error = 0;
psp = p->p_sigacts;
ss.ss_sp = psp->ps_sigstk.ss_sp;
ss.ss_onstack = psp->ps_sigstk.ss_flags & SS_ONSTACK;
if (SCARG(uap, oss) && (error = copyout((caddr_t)&ss,
(caddr_t)SCARG(uap, oss), sizeof (struct sigstack))))
return (error);
if (SCARG(uap, nss) == 0)
return (0);
error = copyin((caddr_t)SCARG(uap, nss), (caddr_t)&ss,
sizeof (ss));
if (error)
return (error);
psp->ps_flags |= SAS_ALTSTACK;
psp->ps_sigstk.ss_sp = ss.ss_sp;
psp->ps_sigstk.ss_size = 0;
psp->ps_sigstk.ss_flags |= ss.ss_onstack & SS_ONSTACK;
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;
{
register struct compat_43_sys_sigvec_args /* {
syscallarg(int) signum;
syscallarg(struct sigvec *) nsv;
syscallarg(struct sigvec *) osv;
} */ *uap = v;
struct sigvec vec;
register struct sigacts *ps = p->p_sigacts;
register struct sigvec *sv;
register int signum;
int bit, error;
signum = SCARG(uap, signum);
if (signum <= 0 || signum >= NSIG ||
signum == SIGKILL || signum == SIGSTOP)
return (EINVAL);
sv = &vec;
if (SCARG(uap, osv)) {
*(sig_t *)&sv->sv_handler = ps->ps_sigact[signum];
sv->sv_mask = ps->ps_catchmask[signum];
bit = sigmask(signum);
sv->sv_flags = 0;
if ((ps->ps_sigonstack & bit) != 0)
sv->sv_flags |= SV_ONSTACK;
if ((ps->ps_sigintr & bit) != 0)
sv->sv_flags |= SV_INTERRUPT;
if ((ps->ps_sigreset & bit) != 0)
sv->sv_flags |= SV_RESETHAND;
if (p->p_flag & P_NOCLDSTOP)
sv->sv_flags |= SA_NOCLDSTOP;
sv->sv_mask &= ~bit;
error = copyout((caddr_t)sv, (caddr_t)SCARG(uap, osv),
sizeof (vec));
if (error)
return (error);
}
if (SCARG(uap, nsv)) {
error = copyin((caddr_t)SCARG(uap, nsv), (caddr_t)sv,
sizeof (vec));
if (error)
return (error);
sv->sv_flags ^= SA_RESTART; /* opposite of SV_INTERRUPT */
setsigvec(p, signum, (struct sigaction *)sv);
}
return (0);
}
/* ARGSUSED */
int
compat_43_sys_killpg(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
register 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));
}
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