NetBSD-5.0.2/sys/compat/osf1/osf1_signal.c
/* $NetBSD: osf1_signal.c,v 1.35 2008/04/24 18:39:23 ad Exp $ */
/*
* Copyright (c) 1999 Christopher G. Demetriou. All rights reserved.
*
* 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 Christopher G. Demetriou
* for the NetBSD Project.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: osf1_signal.c,v 1.35 2008/04/24 18:39:23 ad Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/namei.h>
#include <sys/proc.h>
#include <sys/filedesc.h>
#include <sys/ioctl.h>
#include <sys/mount.h>
#include <sys/kernel.h>
#include <sys/signal.h>
#include <sys/signalvar.h>
#include <sys/malloc.h>
#include <sys/syscallargs.h>
#include <compat/osf1/osf1.h>
#include <compat/osf1/osf1_signal.h>
#include <compat/osf1/osf1_syscallargs.h>
#include <compat/common/compat_util.h>
#include <compat/common/compat_sigaltstack.h>
#include <compat/osf1/osf1_cvt.h>
#if 0
int
osf1_sys_kill(struct lwp *l, const struct osf1_sys_kill_args *uap, register_t *retval)
{
struct sys_kill_args ka;
if (SCARG(uap, signum) < 0 || SCARG(uap, signum) > OSF1_NSIG)
return EINVAL;
SCARG(&ka, pid) = SCARG(uap, pid);
SCARG(&ka, signum) = osf1_to_native_signo[SCARG(uap, signum)];
return sys_kill(l, &ka, retval);
}
#endif
int
osf1_sys_sigaction(struct lwp *l, const struct osf1_sys_sigaction_args *uap, register_t *retval)
{
struct osf1_sigaction *nosa, *oosa, tmposa;
struct sigaction nbsa, obsa;
int error;
if (SCARG(uap, signum) < 0 || SCARG(uap, signum) > OSF1_NSIG)
return EINVAL;
nosa = SCARG(uap, nsa);
oosa = SCARG(uap, osa);
if (nosa != NULL) {
if ((error = copyin(nosa, &tmposa, sizeof(tmposa))) != 0)
return error;
osf1_cvt_sigaction_to_native(&tmposa, &nbsa);
}
if ((error = sigaction1(l,
osf1_to_native_signo[SCARG(uap, signum)],
(nosa ? &nbsa : NULL),
(oosa ? &obsa : NULL),
NULL, 0)) != 0)
return error;
if (oosa != NULL) {
osf1_cvt_sigaction_from_native(&obsa, &tmposa);
if ((error = copyout(&tmposa, oosa, sizeof(tmposa))) != 0)
return error;
}
return 0;
}
int
osf1_sys_sigaltstack(struct lwp *l, const struct osf1_sys_sigaltstack_args *uap, register_t *retval)
{
/* We silently ignore OSF1_SS_NOMASK and OSF1_SS_UCONTEXT */
compat_sigaltstack(uap, osf1_sigaltstack,
OSF1_SS_ONSTACK, OSF1_SS_DISABLE);
}
#if 0
int
osf1_sys_signal(struct lwp *l, const struct osf1_sys_signal_args *uap, register_t *retval)
{
struct proc *p = l->l_proc;
int signum;
int error;
if (SCARG(uap, signum) < 0 || SCARG(uap, signum) > OSF1_NSIG)
return EINVAL;
signum = osf1_to_native_signo[OSF1_SIGNO(SCARG(uap, signum))];
if (signum <= 0 || signum >= OSF1_NSIG) {
if (OSF1_SIGCALL(SCARG(uap, signum)) == OSF1_SIGNAL_MASK ||
OSF1_SIGCALL(SCARG(uap, signum)) == OSF1_SIGDEFER_MASK)
*retval = (int)OSF1_SIG_ERR;
return EINVAL;
}
switch (OSF1_SIGCALL(SCARG(uap, signum))) {
case OSF1_SIGDEFER_MASK:
/*
* sigset is identical to signal() except
* that SIG_HOLD is allowed as
* an action.
*/
if (SCARG(uap, handler) == OSF1_SIG_HOLD) {
struct sys_sigprocmask_args sa;
SCARG(&sa, how) = SIG_BLOCK;
SCARG(&sa, mask) = sigmask(signum);
return sys_sigprocmask(l, &sa, retval);
}
/* FALLTHROUGH */
case OSF1_SIGNAL_MASK:
{
struct sys_sigaction_args sa_args;
struct sigaction nbsa, obsa;
nbsa.sa_handler = SCARG(uap, handler);
sigemptyset(&nbsa.sa_mask);
nbsa.sa_flags = 0;
#if 0
if (signum != SIGALRM)
nbsa.sa_flags = SA_RESTART;
#endif
error = sigaction1(l, signum, &nbsa, &obsa, ?, ?);
if (error != 0) {
DPRINTF(("signal: sigaction failed: %d\n",
error));
*retval = (int)OSF1_SIG_ERR;
return error;
}
*retval = (int)obsa.sa_handler;
return 0;
}
case OSF1_SIGHOLD_MASK:
{
struct sys_sigprocmask_args sa;
SCARG(&sa, how) = SIG_BLOCK;
SCARG(&sa, mask) = sigmask(signum);
return sys_sigprocmask(l, &sa, retval);
}
case OSF1_SIGRELSE_MASK:
{
struct sys_sigprocmask_args sa;
SCARG(&sa, how) = SIG_UNBLOCK;
SCARG(&sa, mask) = sigmask(signum);
return sys_sigprocmask(l, &sa, retval);
}
case OSF1_SIGIGNORE_MASK:
{
struct sys_sigaction_args sa_args;
struct sigaction bsa;
bsa.sa_handler = SIG_IGN;
sigemptyset(&bsa.sa_mask);
bsa.sa_flags = 0;
if ((error = sigaction1(l, &bsa, NULL, ?, ?)) != 0) {
DPRINTF(("sigignore: sigaction failed\n"));
return error;
}
return 0;
}
case OSF1_SIGPAUSE_MASK:
{
struct sys_sigsuspend_args sa;
SCARG(&sa, mask) = p->p_sigmask & ~sigmask(signum);
return sys_sigsuspend(l, &sa, retval);
}
default:
return ENOSYS;
}
}
int
osf1_sys_sigpending(struct lwp *l, const struct osf1_sys_sigpending_args *uap, register_t *retval)
{
struct proc *p = l->l_proc;
sigset_t bss;
osf1_sigset_t oss;
bss = p->p_siglist & p->p_sigmask;
osf1_cvt_sigset_from_native(&bss, &oss);
return copyout(&oss, SCARG(uap, mask), sizeof(oss));
}
int
osf1_sys_sigprocmask(struct lwp *l, const struct osf1_sys_sigprocmask_args *uap, register_t *retval)
{
struct proc *p = l->l_proc;
osf1_sigset_t oss;
sigset_t bss;
int error = 0;
if (SCARG(uap, oset) != NULL) {
/* Fix the return value first if needed */
osf1_cvt_sigset_from_native(&p->p_sigmask, &oss);
if ((error = copyout(&oss, SCARG(uap, oset), sizeof(oss))) != 0)
return error;
}
if (SCARG(uap, set) == NULL)
/* Just examine */
return 0;
if ((error = copyin(SCARG(uap, set), &oss, sizeof(oss))) != 0)
return error;
osf1_cvt_sigset_to_native(&oss, &bss);
mutex_enter(p->p_lock);
switch (SCARG(uap, how)) {
case OSF1_SIG_BLOCK:
*l->l_sigmask |= bss & ~sigcantmask;
break;
case OSF1_SIG_UNBLOCK:
*l->l_sigmask &= ~bss;
lwp_lock(l);
l->l_flag |= LW_PENDSIG;
lwp_unlock(l);
break;
case OSF1_SIG_SETMASK:
*l->l_sigmask = bss & ~sigcantmask;
lwp_lock(l);
l->l_flag |= LW_PENDSIG;
lwp_unlock(l);
break;
default:
error = EINVAL;
break;
}
mutex_exit(p->p_lock);
return error;
}
int
osf1_sys_sigsuspend(struct lwp *l, const struct osf1_sys_sigsuspend_args *uap, register_t *retval)
{
osf1_sigset_t oss;
sigset_t bss;
struct sys_sigsuspend_args sa;
int error;
if ((error = copyin(SCARG(uap, ss), &oss, sizeof(oss))) != 0)
return error;
osf1_cvt_sigset_to_native(&oss, &bss);
SCARG(&sa, mask) = bss;
return sys_sigsuspend(l, &sa, retval);
}
#endif