1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 1987 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate /* Copyright (c) 1984 AT&T */ 28*0Sstevel@tonic-gate /* All Rights Reserved */ 29*0Sstevel@tonic-gate 30*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" /* from S5R2 1.2 */ 31*0Sstevel@tonic-gate 32*0Sstevel@tonic-gate /*LINTLIBRARY*/ 33*0Sstevel@tonic-gate /* 34*0Sstevel@tonic-gate * ssignal, gsignal: software signals 35*0Sstevel@tonic-gate */ 36*0Sstevel@tonic-gate #include <signal.h> 37*0Sstevel@tonic-gate 38*0Sstevel@tonic-gate /* Highest allowable user signal number */ 39*0Sstevel@tonic-gate #define MAXSIG NSIG 40*0Sstevel@tonic-gate 41*0Sstevel@tonic-gate /* Lowest allowable signal number (lowest user number is always 1) */ 42*0Sstevel@tonic-gate #define MINSIG (-4) 43*0Sstevel@tonic-gate 44*0Sstevel@tonic-gate /* Table of signal values */ 45*0Sstevel@tonic-gate typedef int (*sigfunc)(); 46*0Sstevel@tonic-gate sigfunc *ssigp; 47*0Sstevel@tonic-gate 48*0Sstevel@tonic-gate 49*0Sstevel@tonic-gate sigfunc * _ssig()50*0Sstevel@tonic-gate_ssig() 51*0Sstevel@tonic-gate { 52*0Sstevel@tonic-gate if (ssigp == 0) 53*0Sstevel@tonic-gate ssigp = (sigfunc *)calloc(MAXSIG-MINSIG+1, sizeof (sigfunc)); 54*0Sstevel@tonic-gate return (ssigp); 55*0Sstevel@tonic-gate } 56*0Sstevel@tonic-gate 57*0Sstevel@tonic-gate int 58*0Sstevel@tonic-gate (*ssignal(sig, fn))() 59*0Sstevel@tonic-gate register int sig, (*fn)(); 60*0Sstevel@tonic-gate { 61*0Sstevel@tonic-gate register int (*savefn)(); 62*0Sstevel@tonic-gate register sigfunc *sp = _ssig(); 63*0Sstevel@tonic-gate 64*0Sstevel@tonic-gate if (sp == 0) 65*0Sstevel@tonic-gate return ((int (*)())SIG_DFL); 66*0Sstevel@tonic-gate if (sig >= MINSIG && sig <= MAXSIG) { 67*0Sstevel@tonic-gate savefn = sp[sig-MINSIG]; 68*0Sstevel@tonic-gate sp[sig-MINSIG] = fn; 69*0Sstevel@tonic-gate } else 70*0Sstevel@tonic-gate savefn = (int (*)())SIG_DFL; 71*0Sstevel@tonic-gate 72*0Sstevel@tonic-gate return (savefn); 73*0Sstevel@tonic-gate } 74*0Sstevel@tonic-gate 75*0Sstevel@tonic-gate int gsignal(sig)76*0Sstevel@tonic-gategsignal(sig) 77*0Sstevel@tonic-gate register int sig; 78*0Sstevel@tonic-gate { 79*0Sstevel@tonic-gate register int (*sigfn)(); 80*0Sstevel@tonic-gate register sigfunc *sp = _ssig(); 81*0Sstevel@tonic-gate 82*0Sstevel@tonic-gate if (sp == 0) 83*0Sstevel@tonic-gate return (0); 84*0Sstevel@tonic-gate if (sig < MINSIG || sig > MAXSIG || 85*0Sstevel@tonic-gate (sigfn = sp[sig-MINSIG]) == (int (*)())SIG_DFL) 86*0Sstevel@tonic-gate return (0); 87*0Sstevel@tonic-gate else if (sigfn == (int (*)())SIG_IGN) 88*0Sstevel@tonic-gate return (1); 89*0Sstevel@tonic-gate else { 90*0Sstevel@tonic-gate sp[sig-MINSIG] = (int (*)())SIG_DFL; 91*0Sstevel@tonic-gate return ((*sigfn)(sig)); 92*0Sstevel@tonic-gate } 93*0Sstevel@tonic-gate } 94