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 * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26
27 #include <signal.h>
28
29 #include <bsd/bsd.h>
30
31 /* External references.
32 */
33
34 /* Forward references.
35 */
36
37 /* Static data.
38 */
39
40 extern SIG_PF
bsd_signal(int Signal,SIG_PF Handler)41 bsd_signal (int Signal, SIG_PF Handler)
42 {
43 auto SIG_PF previous_handler;
44 #ifdef sun
45 previous_handler = sigset (Signal, Handler);
46 #else
47 auto struct sigaction new_action;
48 auto struct sigaction old_action;
49
50 new_action.sa_flags = SA_SIGINFO;
51 new_action.sa_handler = (void (*) ()) Handler;
52 (void) sigemptyset (&new_action.sa_mask);
53 (void) sigaddset (&new_action.sa_mask, Signal);
54
55 (void) sigaction (Signal, &new_action, &old_action);
56
57 previous_handler = (SIG_PF) old_action.sa_handler;
58 #endif
59 return previous_handler;
60 }
61
62 extern void
bsd_signals(void)63 bsd_signals (void)
64 {
65 static int initialized = 0;
66
67 if (initialized == 0)
68 {
69 initialized = 1;
70 }
71
72 return;
73 }
74