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 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 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