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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License (the "License").
      6  * You may not use this file except in compliance with the License.
      7  *
      8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
      9  * or http://www.opensolaris.org/os/licensing.
     10  * See the License for the specific language governing permissions
     11  * and limitations under the License.
     12  *
     13  * When distributing Covered Code, include this CDDL HEADER in each
     14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     15  * If applicable, add the following below this CDDL HEADER, with the
     16  * fields enclosed by brackets "[]" replaced with your own identifying
     17  * information: Portions Copyright [yyyy] [name of copyright owner]
     18  *
     19  * CDDL HEADER END
     20  */
     21 
     22 /*
     23  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
     24  * Use is subject to license terms.
     25  */
     26 
     27 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     28 
     29 #include "lint.h"
     30 #include <signal.h>
     31 #include <sys/syscall.h>
     32 
     33 int
     34 __lwp_sigmask(int how, const sigset_t *set, sigset_t *oset)
     35 {
     36 	sysret_t rval;
     37 	uint_t mask0;
     38 	uint_t mask1;
     39 
     40 	if (set) {
     41 		mask0 = set->__sigbits[0];
     42 		mask1 = set->__sigbits[1];
     43 	} else {
     44 		how = 0;
     45 		mask0 = mask1 = 0;
     46 	}
     47 
     48 	(void) __systemcall(&rval, SYS_lwp_sigmask, how, mask0, mask1);
     49 
     50 	if (oset) {
     51 		oset->__sigbits[0] = (uint_t)rval.sys_rval1;
     52 		oset->__sigbits[1] = (uint_t)rval.sys_rval2;
     53 		oset->__sigbits[2] = 0;
     54 		oset->__sigbits[3] = 0;
     55 	}
     56 
     57 	return (0);
     58 }
     59