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 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/*
30 * posix signal package
31 */
32#include <stdio.h>
33#include <signal.h>
34#include <errno.h>
35
36#define cantmask        (sigmask(SIGKILL)|sigmask(SIGSTOP))
37
38
39/*
40 * sigemptyset - all known signals
41 */
42int
43sigemptyset(sigset_t *sigp)
44{
45	if (!sigp) {
46		errno = EINVAL;
47		return (-1);
48	}
49	*sigp = 0;
50	return (0);
51}
52
53/*
54 * sigfillset - all known signals
55 */
56int
57sigfillset(sigset_t *sigp)
58{
59	if (!sigp) {
60		errno = EINVAL;
61		return (-1);
62	}
63	*sigp = sigmask(NSIG - 1) | (sigmask(NSIG - 1) - 1);
64	return (0);
65}
66
67/*
68 * add the signal to the set
69 */
70int
71sigaddset(sigset_t *sigp, int signo)
72{
73	if (!sigp  ||  signo <= 0  ||  signo >= NSIG) {
74		errno = EINVAL;
75		return (-1);
76	}
77	*sigp |= sigmask(signo);
78	return (0);
79}
80
81/*
82 * remove the signal from the set
83 */
84int
85sigdelset(sigset_t *sigp, int signo)
86{
87	if (!sigp  ||  signo <= 0  ||  signo >= NSIG) {
88		errno = EINVAL;
89		return (-1);
90	}
91	*sigp &= ~sigmask(signo);
92	return (0);
93}
94
95/*
96 * return true if the signal is in the set (return is 0 or 1)
97 */
98int
99sigismember(sigset_t *sigp, int signo)
100{
101	if (!sigp  ||  signo <= 0  ||  signo >= NSIG) {
102		errno = EINVAL;
103		return (-1);
104	}
105	return ((*sigp & sigmask(signo)) != 0);
106}
107