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 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 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