xref: /illumos-gate/usr/src/uts/common/syscall/sigpending.c (revision dd72704bd9e794056c558153663c739e2012d721)
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 #include <sys/param.h>
31 #include <sys/types.h>
32 #include <sys/sysmacros.h>
33 #include <sys/systm.h>
34 #include <sys/errno.h>
35 #include <sys/proc.h>
36 #include <sys/fault.h>
37 #include <sys/signal.h>
38 #include <sys/schedctl.h>
39 #include <sys/debug.h>
40 
41 int
42 sigpending(int flag, sigset_t *setp)
43 {
44 	sigset_t set;
45 	k_sigset_t kset;
46 	proc_t *p;
47 
48 	switch (flag) {
49 	case 1: /* sigpending */
50 		p = ttoproc(curthread);
51 		mutex_enter(&p->p_lock);
52 		schedctl_finish_sigblock(curthread);
53 		kset = p->p_sig;
54 		sigorset(&kset, &curthread->t_sig);
55 		sigandset(&kset, &curthread->t_hold);
56 		mutex_exit(&p->p_lock);
57 		break;
58 	case 2: /* sigfillset */
59 		kset = fillset;
60 		break;
61 	default:
62 		return (set_errno(EINVAL));
63 	}
64 
65 	sigktou(&kset, &set);
66 	if (copyout((caddr_t)&set, (caddr_t)setp, sizeof (sigset_t)))
67 		return (set_errno(EFAULT));
68 	return (0);
69 }
70