xref: /titanic_41/usr/src/uts/common/syscall/sigpending.c (revision 7c2fbfb345896881c631598ee3852ce9ce33fb07)
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, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 1994-2003 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
28 /*	  All Rights Reserved	*/
29 
30 
31 #pragma ident	"%Z%%M%	%I%	%E% SMI"
32 
33 #include <sys/param.h>
34 #include <sys/types.h>
35 #include <sys/sysmacros.h>
36 #include <sys/systm.h>
37 #include <sys/errno.h>
38 #include <sys/proc.h>
39 #include <sys/fault.h>
40 #include <sys/signal.h>
41 #include <sys/schedctl.h>
42 #include <sys/debug.h>
43 
44 int
45 sigpending(int flag, sigset_t *setp)
46 {
47 	sigset_t set;
48 	k_sigset_t kset;
49 	proc_t *p;
50 
51 	switch (flag) {
52 	case 1: /* sigpending */
53 		p = ttoproc(curthread);
54 		mutex_enter(&p->p_lock);
55 		schedctl_finish_sigblock(curthread);
56 		kset = p->p_sig;
57 		sigorset(&kset, &curthread->t_sig);
58 		sigandset(&kset, &curthread->t_hold);
59 		mutex_exit(&p->p_lock);
60 		break;
61 	case 2: /* sigfillset */
62 		kset = fillset;
63 		break;
64 	default:
65 		return (set_errno(EINVAL));
66 	}
67 
68 	sigktou(&kset, &set);
69 	if (copyout((caddr_t)&set, (caddr_t)setp, sizeof (sigset_t)))
70 		return (set_errno(EFAULT));
71 	return (0);
72 }
73