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