1*7c478bd9Sstevel@tonic-gate /* 2*7c478bd9Sstevel@tonic-gate * CDDL HEADER START 3*7c478bd9Sstevel@tonic-gate * 4*7c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*7c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*7c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*7c478bd9Sstevel@tonic-gate * with the License. 8*7c478bd9Sstevel@tonic-gate * 9*7c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*7c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*7c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 12*7c478bd9Sstevel@tonic-gate * and limitations under the License. 13*7c478bd9Sstevel@tonic-gate * 14*7c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*7c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*7c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*7c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*7c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*7c478bd9Sstevel@tonic-gate * 20*7c478bd9Sstevel@tonic-gate * CDDL HEADER END 21*7c478bd9Sstevel@tonic-gate */ 22*7c478bd9Sstevel@tonic-gate /* 23*7c478bd9Sstevel@tonic-gate * Copyright (c) 2000 by Sun Microsystems, Inc. 24*7c478bd9Sstevel@tonic-gate * All rights reserved. 25*7c478bd9Sstevel@tonic-gate */ 26*7c478bd9Sstevel@tonic-gate 27*7c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 28*7c478bd9Sstevel@tonic-gate #include <signal.h> 29*7c478bd9Sstevel@tonic-gate #include <thread.h> 30*7c478bd9Sstevel@tonic-gate #include <unistd.h> 31*7c478bd9Sstevel@tonic-gate #include <errno.h> 32*7c478bd9Sstevel@tonic-gate 33*7c478bd9Sstevel@tonic-gate #include "sysevent_signal.h" 34*7c478bd9Sstevel@tonic-gate 35*7c478bd9Sstevel@tonic-gate static se_signal_f *sig_handlers[NSIG]; 36*7c478bd9Sstevel@tonic-gate static void *sig_data[NSIG]; 37*7c478bd9Sstevel@tonic-gate 38*7c478bd9Sstevel@tonic-gate static void 39*7c478bd9Sstevel@tonic-gate sig_stub(int sig, siginfo_t *sip, void *ucp) 40*7c478bd9Sstevel@tonic-gate { 41*7c478bd9Sstevel@tonic-gate sig_handlers[sig](sig, sip, (ucontext_t *)ucp, sig_data[sig]); 42*7c478bd9Sstevel@tonic-gate } 43*7c478bd9Sstevel@tonic-gate 44*7c478bd9Sstevel@tonic-gate int 45*7c478bd9Sstevel@tonic-gate se_signal_sethandler(int sig, se_signal_f *handler, void *data) 46*7c478bd9Sstevel@tonic-gate { 47*7c478bd9Sstevel@tonic-gate struct sigaction act; 48*7c478bd9Sstevel@tonic-gate int status; 49*7c478bd9Sstevel@tonic-gate 50*7c478bd9Sstevel@tonic-gate sig_handlers[sig] = handler; 51*7c478bd9Sstevel@tonic-gate sig_data[sig] = data; 52*7c478bd9Sstevel@tonic-gate 53*7c478bd9Sstevel@tonic-gate if (handler == SIG_DFL || handler == SIG_IGN) { 54*7c478bd9Sstevel@tonic-gate act.sa_handler = handler; 55*7c478bd9Sstevel@tonic-gate act.sa_flags = SA_RESTART; 56*7c478bd9Sstevel@tonic-gate } else { 57*7c478bd9Sstevel@tonic-gate act.sa_sigaction = sig_stub; 58*7c478bd9Sstevel@tonic-gate act.sa_flags = SA_SIGINFO | SA_RESTART; 59*7c478bd9Sstevel@tonic-gate } 60*7c478bd9Sstevel@tonic-gate 61*7c478bd9Sstevel@tonic-gate (void) sigfillset(&act.sa_mask); 62*7c478bd9Sstevel@tonic-gate 63*7c478bd9Sstevel@tonic-gate if ((status = sigaction(sig, &act, NULL)) == 0) 64*7c478bd9Sstevel@tonic-gate (void) se_signal_unblock(sig); 65*7c478bd9Sstevel@tonic-gate 66*7c478bd9Sstevel@tonic-gate return (status); 67*7c478bd9Sstevel@tonic-gate } 68*7c478bd9Sstevel@tonic-gate 69*7c478bd9Sstevel@tonic-gate int 70*7c478bd9Sstevel@tonic-gate se_signal_unblock(int sig) 71*7c478bd9Sstevel@tonic-gate { 72*7c478bd9Sstevel@tonic-gate sigset_t set; 73*7c478bd9Sstevel@tonic-gate 74*7c478bd9Sstevel@tonic-gate (void) sigemptyset(&set); 75*7c478bd9Sstevel@tonic-gate (void) sigaddset(&set, sig); 76*7c478bd9Sstevel@tonic-gate 77*7c478bd9Sstevel@tonic-gate return (thr_sigsetmask(SIG_UNBLOCK, &set, NULL)); 78*7c478bd9Sstevel@tonic-gate } 79*7c478bd9Sstevel@tonic-gate 80*7c478bd9Sstevel@tonic-gate int 81*7c478bd9Sstevel@tonic-gate se_signal_blockall(void) 82*7c478bd9Sstevel@tonic-gate { 83*7c478bd9Sstevel@tonic-gate sigset_t set; 84*7c478bd9Sstevel@tonic-gate 85*7c478bd9Sstevel@tonic-gate (void) sigfillset(&set); 86*7c478bd9Sstevel@tonic-gate return (thr_sigsetmask(SIG_BLOCK, &set, NULL)); 87*7c478bd9Sstevel@tonic-gate } 88*7c478bd9Sstevel@tonic-gate 89*7c478bd9Sstevel@tonic-gate int 90*7c478bd9Sstevel@tonic-gate se_signal_unblockall(void) 91*7c478bd9Sstevel@tonic-gate { 92*7c478bd9Sstevel@tonic-gate sigset_t set; 93*7c478bd9Sstevel@tonic-gate 94*7c478bd9Sstevel@tonic-gate (void) sigfillset(&set); 95*7c478bd9Sstevel@tonic-gate return (thr_sigsetmask(SIG_UNBLOCK, &set, NULL)); 96*7c478bd9Sstevel@tonic-gate } 97