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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/*
* Copyright 1994-2003 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/param.h>
#include <sys/types.h>
#include <sys/sysmacros.h>
#include <sys/systm.h>
#include <sys/errno.h>
#include <sys/proc.h>
#include <sys/fault.h>
#include <sys/signal.h>
#include <sys/schedctl.h>
#include <sys/debug.h>
int64_t
lwp_sigmask(int how, uint_t bits0, uint_t bits1)
{
kthread_t *t = curthread;
proc_t *p = ttoproc(t);
rval_t rv;
mutex_enter(&p->p_lock);
schedctl_finish_sigblock(t);
bits0 &= (FILLSET0 & ~CANTMASK0);
bits1 &= (FILLSET1 & ~CANTMASK1);
rv.r_val1 = t->t_hold.__sigbits[0];
rv.r_val2 = t->t_hold.__sigbits[1];
switch (how) {
case SIG_BLOCK:
t->t_hold.__sigbits[0] |= bits0;
t->t_hold.__sigbits[1] |= bits1;
break;
case SIG_UNBLOCK:
t->t_hold.__sigbits[0] &= ~bits0;
t->t_hold.__sigbits[1] &= ~bits1;
if (sigcheck(p, t))
t->t_sig_check = 1;
break;
case SIG_SETMASK:
t->t_hold.__sigbits[0] = bits0;
t->t_hold.__sigbits[1] = bits1;
if (sigcheck(p, t))
t->t_sig_check = 1;
break;
}
mutex_exit(&p->p_lock);
return (rv.r_vals);
}
/*
* This system call is no longer called from libc.
* It exists solely for the benefit of statically-linked
* binaries from the past. It should be eliminated.
*/
int
sigprocmask(int how, sigset_t *setp, sigset_t *osetp)
{
sigset_t set;
k_sigset_t kset;
rval_t rv;
/*
* User's oset and set might be the same address, so copyin first and
* save before copying out.
*/
if (setp) {
switch (how) {
case SIG_BLOCK:
case SIG_UNBLOCK:
case SIG_SETMASK:
break;
default:
return (set_errno(EINVAL));
}
if (copyin((caddr_t)setp, (caddr_t)&set, sizeof (sigset_t)))
return (set_errno(EFAULT));
sigutok(&set, &kset);
} else {
/* none of SIG_BLOCK, SIG_UNBLOCK, SIG_SETMASK equals 0 */
how = 0;
sigemptyset(&kset);
}
rv.r_vals = lwp_sigmask(how, kset.__sigbits[0], kset.__sigbits[1]);
if (osetp) {
kset.__sigbits[0] = rv.r_val1;
kset.__sigbits[1] = rv.r_val2;
sigktou(&kset, &set);
if (copyout((caddr_t)&set, (caddr_t)osetp, sizeof (sigset_t)))
return (set_errno(EFAULT));
}
return (0);
}
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