17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate  * CDDL HEADER START
37c478bd9Sstevel@tonic-gate  *
47c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
57be238fcSRoger A. Faulkner  * Common Development and Distribution License (the "License").
67be238fcSRoger A. Faulkner  * You may not use this file except in compliance with the License.
77c478bd9Sstevel@tonic-gate  *
87c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
97c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
107c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
117c478bd9Sstevel@tonic-gate  * and limitations under the License.
127c478bd9Sstevel@tonic-gate  *
137c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
147c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
157c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
167c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
177c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
187c478bd9Sstevel@tonic-gate  *
197c478bd9Sstevel@tonic-gate  * CDDL HEADER END
207c478bd9Sstevel@tonic-gate  */
217c478bd9Sstevel@tonic-gate 
227c478bd9Sstevel@tonic-gate /*
23*bdf0047cSRoger A. Faulkner  * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
247c478bd9Sstevel@tonic-gate  * Use is subject to license terms.
257c478bd9Sstevel@tonic-gate  */
267c478bd9Sstevel@tonic-gate 
277be238fcSRoger A. Faulkner /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
287c478bd9Sstevel@tonic-gate 
297c478bd9Sstevel@tonic-gate #include <sys/param.h>
307c478bd9Sstevel@tonic-gate #include <sys/types.h>
317c478bd9Sstevel@tonic-gate #include <sys/sysmacros.h>
327c478bd9Sstevel@tonic-gate #include <sys/systm.h>
337c478bd9Sstevel@tonic-gate #include <sys/errno.h>
347c478bd9Sstevel@tonic-gate #include <sys/proc.h>
357c478bd9Sstevel@tonic-gate #include <sys/fault.h>
367c478bd9Sstevel@tonic-gate #include <sys/signal.h>
377c478bd9Sstevel@tonic-gate #include <sys/schedctl.h>
387c478bd9Sstevel@tonic-gate #include <sys/debug.h>
397c478bd9Sstevel@tonic-gate 
40*bdf0047cSRoger A. Faulkner /* ARGSUSED4 */
417c478bd9Sstevel@tonic-gate int64_t
lwp_sigmask(int how,uint_t bits0,uint_t bits1,uint_t bits2,uint_t bits3)42*bdf0047cSRoger A. Faulkner lwp_sigmask(int how, uint_t bits0, uint_t bits1, uint_t bits2, uint_t bits3)
437c478bd9Sstevel@tonic-gate {
447c478bd9Sstevel@tonic-gate 	kthread_t *t = curthread;
457c478bd9Sstevel@tonic-gate 	proc_t *p = ttoproc(t);
467c478bd9Sstevel@tonic-gate 	rval_t rv;
477c478bd9Sstevel@tonic-gate 
487be238fcSRoger A. Faulkner 	/*
497be238fcSRoger A. Faulkner 	 * We don't need to acquire p->p_lock here;
507be238fcSRoger A. Faulkner 	 * we are manipulating thread-private data.
517be238fcSRoger A. Faulkner 	 */
527be238fcSRoger A. Faulkner 
537c478bd9Sstevel@tonic-gate 	schedctl_finish_sigblock(t);
547c478bd9Sstevel@tonic-gate 
557c478bd9Sstevel@tonic-gate 	bits0 &= (FILLSET0 & ~CANTMASK0);
567c478bd9Sstevel@tonic-gate 	bits1 &= (FILLSET1 & ~CANTMASK1);
57*bdf0047cSRoger A. Faulkner 	bits2 &= (FILLSET2 & ~CANTMASK2);
587c478bd9Sstevel@tonic-gate 
59*bdf0047cSRoger A. Faulkner 	/*
60*bdf0047cSRoger A. Faulkner 	 * As a sop to the s10 brand, we continue to return
61*bdf0047cSRoger A. Faulkner 	 * the first two words of the signal mask, regardless
62*bdf0047cSRoger A. Faulkner 	 * of the value of 'how', even though libc doesn't use them.
63*bdf0047cSRoger A. Faulkner 	 */
647c478bd9Sstevel@tonic-gate 	rv.r_val1 = t->t_hold.__sigbits[0];
657c478bd9Sstevel@tonic-gate 	rv.r_val2 = t->t_hold.__sigbits[1];
667c478bd9Sstevel@tonic-gate 
677c478bd9Sstevel@tonic-gate 	switch (how) {
687c478bd9Sstevel@tonic-gate 	case SIG_BLOCK:
697c478bd9Sstevel@tonic-gate 		t->t_hold.__sigbits[0] |= bits0;
707c478bd9Sstevel@tonic-gate 		t->t_hold.__sigbits[1] |= bits1;
71*bdf0047cSRoger A. Faulkner 		t->t_hold.__sigbits[2] |= bits2;
727c478bd9Sstevel@tonic-gate 		break;
737c478bd9Sstevel@tonic-gate 	case SIG_UNBLOCK:
747c478bd9Sstevel@tonic-gate 		t->t_hold.__sigbits[0] &= ~bits0;
757c478bd9Sstevel@tonic-gate 		t->t_hold.__sigbits[1] &= ~bits1;
76*bdf0047cSRoger A. Faulkner 		t->t_hold.__sigbits[2] &= ~bits2;
777c478bd9Sstevel@tonic-gate 		if (sigcheck(p, t))
787c478bd9Sstevel@tonic-gate 			t->t_sig_check = 1;
797c478bd9Sstevel@tonic-gate 		break;
807c478bd9Sstevel@tonic-gate 	case SIG_SETMASK:
817c478bd9Sstevel@tonic-gate 		t->t_hold.__sigbits[0] = bits0;
827c478bd9Sstevel@tonic-gate 		t->t_hold.__sigbits[1] = bits1;
83*bdf0047cSRoger A. Faulkner 		t->t_hold.__sigbits[2] = bits2;
847c478bd9Sstevel@tonic-gate 		if (sigcheck(p, t))
857c478bd9Sstevel@tonic-gate 			t->t_sig_check = 1;
867c478bd9Sstevel@tonic-gate 		break;
877c478bd9Sstevel@tonic-gate 	}
887c478bd9Sstevel@tonic-gate 
897c478bd9Sstevel@tonic-gate 	return (rv.r_vals);
907c478bd9Sstevel@tonic-gate }
917c478bd9Sstevel@tonic-gate 
927c478bd9Sstevel@tonic-gate int
sigprocmask(int how,sigset_t * setp,sigset_t * osetp)937c478bd9Sstevel@tonic-gate sigprocmask(int how, sigset_t *setp, sigset_t *osetp)
947c478bd9Sstevel@tonic-gate {
957c478bd9Sstevel@tonic-gate 	sigset_t set;
96*bdf0047cSRoger A. Faulkner 	sigset_t oset;
977c478bd9Sstevel@tonic-gate 	k_sigset_t kset;
987c478bd9Sstevel@tonic-gate 
997c478bd9Sstevel@tonic-gate 	/*
100*bdf0047cSRoger A. Faulkner 	 * User's osetp and setp might be the same address,
101*bdf0047cSRoger A. Faulkner 	 * so copyin first and save before copying out.
1027c478bd9Sstevel@tonic-gate 	 */
1037c478bd9Sstevel@tonic-gate 	if (setp) {
1047c478bd9Sstevel@tonic-gate 		switch (how) {
1057c478bd9Sstevel@tonic-gate 		case SIG_BLOCK:
1067c478bd9Sstevel@tonic-gate 		case SIG_UNBLOCK:
1077c478bd9Sstevel@tonic-gate 		case SIG_SETMASK:
1087c478bd9Sstevel@tonic-gate 			break;
1097c478bd9Sstevel@tonic-gate 		default:
1107c478bd9Sstevel@tonic-gate 			return (set_errno(EINVAL));
1117c478bd9Sstevel@tonic-gate 		}
1127c478bd9Sstevel@tonic-gate 		if (copyin((caddr_t)setp, (caddr_t)&set, sizeof (sigset_t)))
1137c478bd9Sstevel@tonic-gate 			return (set_errno(EFAULT));
1147c478bd9Sstevel@tonic-gate 		sigutok(&set, &kset);
1157c478bd9Sstevel@tonic-gate 	}
1167c478bd9Sstevel@tonic-gate 
1177c478bd9Sstevel@tonic-gate 	if (osetp) {
118*bdf0047cSRoger A. Faulkner 		sigktou(&curthread->t_hold, &oset);
119*bdf0047cSRoger A. Faulkner 		if (copyout((caddr_t)&oset, (caddr_t)osetp, sizeof (sigset_t)))
1207c478bd9Sstevel@tonic-gate 			return (set_errno(EFAULT));
1217c478bd9Sstevel@tonic-gate 	}
1227c478bd9Sstevel@tonic-gate 
123*bdf0047cSRoger A. Faulkner 	if (setp) {
124*bdf0047cSRoger A. Faulkner 		(void) lwp_sigmask(how,
125*bdf0047cSRoger A. Faulkner 		    kset.__sigbits[0],
126*bdf0047cSRoger A. Faulkner 		    kset.__sigbits[1],
127*bdf0047cSRoger A. Faulkner 		    kset.__sigbits[2],
128*bdf0047cSRoger A. Faulkner 		    0);
129*bdf0047cSRoger A. Faulkner 	}
130*bdf0047cSRoger A. Faulkner 
1317c478bd9Sstevel@tonic-gate 	return (0);
1327c478bd9Sstevel@tonic-gate }
133