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 2004 Sun Microsystems, Inc. All rights reserved. 24*7c478bd9Sstevel@tonic-gate * Use is subject to license terms. 25*7c478bd9Sstevel@tonic-gate */ 26*7c478bd9Sstevel@tonic-gate 27*7c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 28*7c478bd9Sstevel@tonic-gate 29*7c478bd9Sstevel@tonic-gate /* Copyright (c) 1988 AT&T */ 30*7c478bd9Sstevel@tonic-gate /* All Rights Reserved */ 31*7c478bd9Sstevel@tonic-gate 32*7c478bd9Sstevel@tonic-gate 33*7c478bd9Sstevel@tonic-gate /* 34*7c478bd9Sstevel@tonic-gate * POSIX signal manipulation functions. 35*7c478bd9Sstevel@tonic-gate */ 36*7c478bd9Sstevel@tonic-gate #pragma weak sigfillset = _sigfillset 37*7c478bd9Sstevel@tonic-gate #pragma weak sigemptyset = _sigemptyset 38*7c478bd9Sstevel@tonic-gate #pragma weak sigaddset = _sigaddset 39*7c478bd9Sstevel@tonic-gate #pragma weak sigdelset = _sigdelset 40*7c478bd9Sstevel@tonic-gate #pragma weak sigismember = _sigismember 41*7c478bd9Sstevel@tonic-gate 42*7c478bd9Sstevel@tonic-gate #pragma weak _private_sigfillset = _sigfillset 43*7c478bd9Sstevel@tonic-gate #pragma weak _private_sigemptyset = _sigemptyset 44*7c478bd9Sstevel@tonic-gate #pragma weak _private_sigaddset = _sigaddset 45*7c478bd9Sstevel@tonic-gate #pragma weak _private_sigdelset = _sigdelset 46*7c478bd9Sstevel@tonic-gate #pragma weak _private_sigismember = _sigismember 47*7c478bd9Sstevel@tonic-gate 48*7c478bd9Sstevel@tonic-gate #include "synonyms.h" 49*7c478bd9Sstevel@tonic-gate #include <sys/types.h> 50*7c478bd9Sstevel@tonic-gate #include <stdio.h> 51*7c478bd9Sstevel@tonic-gate #include <sys/param.h> 52*7c478bd9Sstevel@tonic-gate #include <sys/errno.h> 53*7c478bd9Sstevel@tonic-gate #include <sys/signal.h> 54*7c478bd9Sstevel@tonic-gate #include <errno.h> 55*7c478bd9Sstevel@tonic-gate #include "libc.h" 56*7c478bd9Sstevel@tonic-gate 57*7c478bd9Sstevel@tonic-gate #define SIGSETSIZE 4 58*7c478bd9Sstevel@tonic-gate #define MAXBITNO (NBPW*8) 59*7c478bd9Sstevel@tonic-gate 60*7c478bd9Sstevel@tonic-gate static sigset_t sigs; 61*7c478bd9Sstevel@tonic-gate static int sigsinit; 62*7c478bd9Sstevel@tonic-gate 63*7c478bd9Sstevel@tonic-gate #define sigword(n) ((n-1)/MAXBITNO) 64*7c478bd9Sstevel@tonic-gate #define bitmask(n) (1L<<((n-1)%MAXBITNO)) 65*7c478bd9Sstevel@tonic-gate 66*7c478bd9Sstevel@tonic-gate static int 67*7c478bd9Sstevel@tonic-gate sigvalid(int sig) 68*7c478bd9Sstevel@tonic-gate { 69*7c478bd9Sstevel@tonic-gate if (sig <= 0 || sig > (MAXBITNO * SIGSETSIZE)) 70*7c478bd9Sstevel@tonic-gate return (0); 71*7c478bd9Sstevel@tonic-gate 72*7c478bd9Sstevel@tonic-gate if (!sigsinit) { 73*7c478bd9Sstevel@tonic-gate (void) __sigfillset(&sigs); 74*7c478bd9Sstevel@tonic-gate sigsinit++; 75*7c478bd9Sstevel@tonic-gate } 76*7c478bd9Sstevel@tonic-gate 77*7c478bd9Sstevel@tonic-gate return ((sigs.__sigbits[sigword(sig)] & bitmask(sig)) != 0); 78*7c478bd9Sstevel@tonic-gate } 79*7c478bd9Sstevel@tonic-gate 80*7c478bd9Sstevel@tonic-gate int 81*7c478bd9Sstevel@tonic-gate sigfillset(sigset_t *set) 82*7c478bd9Sstevel@tonic-gate { 83*7c478bd9Sstevel@tonic-gate if (!sigsinit) { 84*7c478bd9Sstevel@tonic-gate (void) __sigfillset(&sigs); 85*7c478bd9Sstevel@tonic-gate sigsinit++; 86*7c478bd9Sstevel@tonic-gate } 87*7c478bd9Sstevel@tonic-gate 88*7c478bd9Sstevel@tonic-gate *set = sigs; 89*7c478bd9Sstevel@tonic-gate return (0); 90*7c478bd9Sstevel@tonic-gate } 91*7c478bd9Sstevel@tonic-gate 92*7c478bd9Sstevel@tonic-gate int 93*7c478bd9Sstevel@tonic-gate sigemptyset(sigset_t *set) 94*7c478bd9Sstevel@tonic-gate { 95*7c478bd9Sstevel@tonic-gate set->__sigbits[0] = 0; 96*7c478bd9Sstevel@tonic-gate set->__sigbits[1] = 0; 97*7c478bd9Sstevel@tonic-gate set->__sigbits[2] = 0; 98*7c478bd9Sstevel@tonic-gate set->__sigbits[3] = 0; 99*7c478bd9Sstevel@tonic-gate return (0); 100*7c478bd9Sstevel@tonic-gate } 101*7c478bd9Sstevel@tonic-gate 102*7c478bd9Sstevel@tonic-gate int 103*7c478bd9Sstevel@tonic-gate sigaddset(sigset_t *set, int sig) 104*7c478bd9Sstevel@tonic-gate { 105*7c478bd9Sstevel@tonic-gate if (!sigvalid(sig)) { 106*7c478bd9Sstevel@tonic-gate errno = EINVAL; 107*7c478bd9Sstevel@tonic-gate return (-1); 108*7c478bd9Sstevel@tonic-gate } 109*7c478bd9Sstevel@tonic-gate set->__sigbits[sigword(sig)] |= bitmask(sig); 110*7c478bd9Sstevel@tonic-gate return (0); 111*7c478bd9Sstevel@tonic-gate } 112*7c478bd9Sstevel@tonic-gate 113*7c478bd9Sstevel@tonic-gate int 114*7c478bd9Sstevel@tonic-gate sigdelset(sigset_t *set, int sig) 115*7c478bd9Sstevel@tonic-gate { 116*7c478bd9Sstevel@tonic-gate if (!sigvalid(sig)) { 117*7c478bd9Sstevel@tonic-gate errno = EINVAL; 118*7c478bd9Sstevel@tonic-gate return (-1); 119*7c478bd9Sstevel@tonic-gate } 120*7c478bd9Sstevel@tonic-gate set->__sigbits[sigword(sig)] &= ~bitmask(sig); 121*7c478bd9Sstevel@tonic-gate return (0); 122*7c478bd9Sstevel@tonic-gate } 123*7c478bd9Sstevel@tonic-gate 124*7c478bd9Sstevel@tonic-gate int 125*7c478bd9Sstevel@tonic-gate sigismember(const sigset_t *set, int sig) 126*7c478bd9Sstevel@tonic-gate { 127*7c478bd9Sstevel@tonic-gate if (!sigvalid(sig)) { 128*7c478bd9Sstevel@tonic-gate errno = EINVAL; 129*7c478bd9Sstevel@tonic-gate return (-1); 130*7c478bd9Sstevel@tonic-gate } 131*7c478bd9Sstevel@tonic-gate return ((set->__sigbits[sigword(sig)] & bitmask(sig)) != 0); 132*7c478bd9Sstevel@tonic-gate } 133