17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 58cd45542Sraf * Common Development and Distribution License (the "License"). 68cd45542Sraf * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 218cd45542Sraf 227c478bd9Sstevel@tonic-gate /* 238cd45542Sraf * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 247c478bd9Sstevel@tonic-gate * Use is subject to license terms. 257c478bd9Sstevel@tonic-gate */ 267c478bd9Sstevel@tonic-gate 277c478bd9Sstevel@tonic-gate /* Copyright (c) 1988 AT&T */ 287c478bd9Sstevel@tonic-gate /* All Rights Reserved */ 297c478bd9Sstevel@tonic-gate 30*7257d1b4Sraf #pragma ident "%Z%%M% %I% %E% SMI" 31*7257d1b4Sraf 327c478bd9Sstevel@tonic-gate /* 337c478bd9Sstevel@tonic-gate * POSIX signal manipulation functions. 347c478bd9Sstevel@tonic-gate */ 35*7257d1b4Sraf #pragma weak _sigfillset = sigfillset 36*7257d1b4Sraf #pragma weak _sigemptyset = sigemptyset 37*7257d1b4Sraf #pragma weak _sigaddset = sigaddset 38*7257d1b4Sraf #pragma weak _sigdelset = sigdelset 39*7257d1b4Sraf #pragma weak _sigismember = sigismember 407c478bd9Sstevel@tonic-gate 41*7257d1b4Sraf #include "lint.h" 427c478bd9Sstevel@tonic-gate #include <sys/types.h> 437c478bd9Sstevel@tonic-gate #include <stdio.h> 447c478bd9Sstevel@tonic-gate #include <sys/param.h> 457c478bd9Sstevel@tonic-gate #include <sys/signal.h> 467c478bd9Sstevel@tonic-gate #include <errno.h> 477c478bd9Sstevel@tonic-gate #include "libc.h" 487c478bd9Sstevel@tonic-gate 497c478bd9Sstevel@tonic-gate #define SIGSETSIZE 4 507c478bd9Sstevel@tonic-gate #define MAXBITNO (NBPW*8) 517c478bd9Sstevel@tonic-gate 527c478bd9Sstevel@tonic-gate static sigset_t sigs; 537c478bd9Sstevel@tonic-gate static int sigsinit; 547c478bd9Sstevel@tonic-gate 557c478bd9Sstevel@tonic-gate #define sigword(n) ((n-1)/MAXBITNO) 567c478bd9Sstevel@tonic-gate #define bitmask(n) (1L<<((n-1)%MAXBITNO)) 577c478bd9Sstevel@tonic-gate 587c478bd9Sstevel@tonic-gate static int 597c478bd9Sstevel@tonic-gate sigvalid(int sig) 607c478bd9Sstevel@tonic-gate { 617c478bd9Sstevel@tonic-gate if (sig <= 0 || sig > (MAXBITNO * SIGSETSIZE)) 627c478bd9Sstevel@tonic-gate return (0); 637c478bd9Sstevel@tonic-gate 647c478bd9Sstevel@tonic-gate if (!sigsinit) { 657c478bd9Sstevel@tonic-gate (void) __sigfillset(&sigs); 667c478bd9Sstevel@tonic-gate sigsinit++; 677c478bd9Sstevel@tonic-gate } 687c478bd9Sstevel@tonic-gate 697c478bd9Sstevel@tonic-gate return ((sigs.__sigbits[sigword(sig)] & bitmask(sig)) != 0); 707c478bd9Sstevel@tonic-gate } 717c478bd9Sstevel@tonic-gate 727c478bd9Sstevel@tonic-gate int 737c478bd9Sstevel@tonic-gate sigfillset(sigset_t *set) 747c478bd9Sstevel@tonic-gate { 757c478bd9Sstevel@tonic-gate if (!sigsinit) { 767c478bd9Sstevel@tonic-gate (void) __sigfillset(&sigs); 777c478bd9Sstevel@tonic-gate sigsinit++; 787c478bd9Sstevel@tonic-gate } 797c478bd9Sstevel@tonic-gate 807c478bd9Sstevel@tonic-gate *set = sigs; 817c478bd9Sstevel@tonic-gate return (0); 827c478bd9Sstevel@tonic-gate } 837c478bd9Sstevel@tonic-gate 847c478bd9Sstevel@tonic-gate int 857c478bd9Sstevel@tonic-gate sigemptyset(sigset_t *set) 867c478bd9Sstevel@tonic-gate { 877c478bd9Sstevel@tonic-gate set->__sigbits[0] = 0; 887c478bd9Sstevel@tonic-gate set->__sigbits[1] = 0; 897c478bd9Sstevel@tonic-gate set->__sigbits[2] = 0; 907c478bd9Sstevel@tonic-gate set->__sigbits[3] = 0; 917c478bd9Sstevel@tonic-gate return (0); 927c478bd9Sstevel@tonic-gate } 937c478bd9Sstevel@tonic-gate 947c478bd9Sstevel@tonic-gate int 957c478bd9Sstevel@tonic-gate sigaddset(sigset_t *set, int sig) 967c478bd9Sstevel@tonic-gate { 977c478bd9Sstevel@tonic-gate if (!sigvalid(sig)) { 987c478bd9Sstevel@tonic-gate errno = EINVAL; 997c478bd9Sstevel@tonic-gate return (-1); 1007c478bd9Sstevel@tonic-gate } 1017c478bd9Sstevel@tonic-gate set->__sigbits[sigword(sig)] |= bitmask(sig); 1027c478bd9Sstevel@tonic-gate return (0); 1037c478bd9Sstevel@tonic-gate } 1047c478bd9Sstevel@tonic-gate 1057c478bd9Sstevel@tonic-gate int 1067c478bd9Sstevel@tonic-gate sigdelset(sigset_t *set, int sig) 1077c478bd9Sstevel@tonic-gate { 1087c478bd9Sstevel@tonic-gate if (!sigvalid(sig)) { 1097c478bd9Sstevel@tonic-gate errno = EINVAL; 1107c478bd9Sstevel@tonic-gate return (-1); 1117c478bd9Sstevel@tonic-gate } 1127c478bd9Sstevel@tonic-gate set->__sigbits[sigword(sig)] &= ~bitmask(sig); 1137c478bd9Sstevel@tonic-gate return (0); 1147c478bd9Sstevel@tonic-gate } 1157c478bd9Sstevel@tonic-gate 1167c478bd9Sstevel@tonic-gate int 1177c478bd9Sstevel@tonic-gate sigismember(const sigset_t *set, int sig) 1187c478bd9Sstevel@tonic-gate { 1197c478bd9Sstevel@tonic-gate if (!sigvalid(sig)) { 1207c478bd9Sstevel@tonic-gate errno = EINVAL; 1217c478bd9Sstevel@tonic-gate return (-1); 1227c478bd9Sstevel@tonic-gate } 1237c478bd9Sstevel@tonic-gate return ((set->__sigbits[sigword(sig)] & bitmask(sig)) != 0); 1247c478bd9Sstevel@tonic-gate } 125