1*10d63b7dSRichard Lowe /*
2*10d63b7dSRichard Lowe * CDDL HEADER START
3*10d63b7dSRichard Lowe *
4*10d63b7dSRichard Lowe * The contents of this file are subject to the terms of the
5*10d63b7dSRichard Lowe * Common Development and Distribution License (the "License").
6*10d63b7dSRichard Lowe * You may not use this file except in compliance with the License.
7*10d63b7dSRichard Lowe *
8*10d63b7dSRichard Lowe * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9*10d63b7dSRichard Lowe * or http://www.opensolaris.org/os/licensing.
10*10d63b7dSRichard Lowe * See the License for the specific language governing permissions
11*10d63b7dSRichard Lowe * and limitations under the License.
12*10d63b7dSRichard Lowe *
13*10d63b7dSRichard Lowe * When distributing Covered Code, include this CDDL HEADER in each
14*10d63b7dSRichard Lowe * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15*10d63b7dSRichard Lowe * If applicable, add the following below this CDDL HEADER, with the
16*10d63b7dSRichard Lowe * fields enclosed by brackets "[]" replaced with your own identifying
17*10d63b7dSRichard Lowe * information: Portions Copyright [yyyy] [name of copyright owner]
18*10d63b7dSRichard Lowe *
19*10d63b7dSRichard Lowe * CDDL HEADER END
20*10d63b7dSRichard Lowe */
21*10d63b7dSRichard Lowe /*
22*10d63b7dSRichard Lowe * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
23*10d63b7dSRichard Lowe * Use is subject to license terms.
24*10d63b7dSRichard Lowe */
25*10d63b7dSRichard Lowe
26*10d63b7dSRichard Lowe
27*10d63b7dSRichard Lowe #include <signal.h>
28*10d63b7dSRichard Lowe
29*10d63b7dSRichard Lowe #include <bsd/bsd.h>
30*10d63b7dSRichard Lowe
31*10d63b7dSRichard Lowe /* External references.
32*10d63b7dSRichard Lowe */
33*10d63b7dSRichard Lowe
34*10d63b7dSRichard Lowe /* Forward references.
35*10d63b7dSRichard Lowe */
36*10d63b7dSRichard Lowe
37*10d63b7dSRichard Lowe /* Static data.
38*10d63b7dSRichard Lowe */
39*10d63b7dSRichard Lowe
40*10d63b7dSRichard Lowe extern SIG_PF
bsd_signal(int Signal,SIG_PF Handler)41*10d63b7dSRichard Lowe bsd_signal (int Signal, SIG_PF Handler)
42*10d63b7dSRichard Lowe {
43*10d63b7dSRichard Lowe auto SIG_PF previous_handler;
44*10d63b7dSRichard Lowe #ifdef sun
45*10d63b7dSRichard Lowe previous_handler = sigset (Signal, Handler);
46*10d63b7dSRichard Lowe #else
47*10d63b7dSRichard Lowe auto struct sigaction new_action;
48*10d63b7dSRichard Lowe auto struct sigaction old_action;
49*10d63b7dSRichard Lowe
50*10d63b7dSRichard Lowe new_action.sa_flags = SA_SIGINFO;
51*10d63b7dSRichard Lowe new_action.sa_handler = (void (*) ()) Handler;
52*10d63b7dSRichard Lowe (void) sigemptyset (&new_action.sa_mask);
53*10d63b7dSRichard Lowe (void) sigaddset (&new_action.sa_mask, Signal);
54*10d63b7dSRichard Lowe
55*10d63b7dSRichard Lowe (void) sigaction (Signal, &new_action, &old_action);
56*10d63b7dSRichard Lowe
57*10d63b7dSRichard Lowe previous_handler = (SIG_PF) old_action.sa_handler;
58*10d63b7dSRichard Lowe #endif
59*10d63b7dSRichard Lowe return previous_handler;
60*10d63b7dSRichard Lowe }
61*10d63b7dSRichard Lowe
62*10d63b7dSRichard Lowe extern void
bsd_signals(void)63*10d63b7dSRichard Lowe bsd_signals (void)
64*10d63b7dSRichard Lowe {
65*10d63b7dSRichard Lowe static int initialized = 0;
66*10d63b7dSRichard Lowe
67*10d63b7dSRichard Lowe if (initialized == 0)
68*10d63b7dSRichard Lowe {
69*10d63b7dSRichard Lowe initialized = 1;
70*10d63b7dSRichard Lowe }
71*10d63b7dSRichard Lowe
72*10d63b7dSRichard Lowe return;
73*10d63b7dSRichard Lowe }
74