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/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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#pragma ident "%Z%%M% %I% %E% SMI"
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/* Copyright (c) 1988 AT&T */
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/* All Rights Reserved */
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/*
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* POSIX signal manipulation functions.
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*/
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#pragma weak sigfillset = _sigfillset
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#pragma weak sigemptyset = _sigemptyset
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#pragma weak sigaddset = _sigaddset
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#pragma weak sigdelset = _sigdelset
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#pragma weak sigismember = _sigismember
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#pragma weak _private_sigfillset = _sigfillset
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#pragma weak _private_sigemptyset = _sigemptyset
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#pragma weak _private_sigaddset = _sigaddset
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#pragma weak _private_sigdelset = _sigdelset
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#pragma weak _private_sigismember = _sigismember
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#include "synonyms.h"
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#include <sys/types.h>
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#include <stdio.h>
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#include <sys/param.h>
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#include <sys/errno.h>
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#include <sys/signal.h>
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#include <errno.h>
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#include "libc.h"
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#define SIGSETSIZE 4
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#define MAXBITNO (NBPW*8)
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static sigset_t sigs;
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static int sigsinit;
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#define sigword(n) ((n-1)/MAXBITNO)
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#define bitmask(n) (1L<<((n-1)%MAXBITNO))
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static int
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sigvalid(int sig)
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{
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if (sig <= 0 || sig > (MAXBITNO * SIGSETSIZE))
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return (0);
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if (!sigsinit) {
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(void) __sigfillset(&sigs);
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sigsinit++;
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}
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return ((sigs.__sigbits[sigword(sig)] & bitmask(sig)) != 0);
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}
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int
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sigfillset(sigset_t *set)
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{
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if (!sigsinit) {
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(void) __sigfillset(&sigs);
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sigsinit++;
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}
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*set = sigs;
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return (0);
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}
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int
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sigemptyset(sigset_t *set)
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{
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set->__sigbits[0] = 0;
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set->__sigbits[1] = 0;
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set->__sigbits[2] = 0;
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set->__sigbits[3] = 0;
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return (0);
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}
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int
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sigaddset(sigset_t *set, int sig)
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{
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if (!sigvalid(sig)) {
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errno = EINVAL;
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return (-1);
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}
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set->__sigbits[sigword(sig)] |= bitmask(sig);
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return (0);
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}
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int
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sigdelset(sigset_t *set, int sig)
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{
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if (!sigvalid(sig)) {
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errno = EINVAL;
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return (-1);
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}
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set->__sigbits[sigword(sig)] &= ~bitmask(sig);
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return (0);
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}
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int
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sigismember(const sigset_t *set, int sig)
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{
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if (!sigvalid(sig)) {
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errno = EINVAL;
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return (-1);
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}
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return ((set->__sigbits[sigword(sig)] & bitmask(sig)) != 0);
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}
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