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/*
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 * Copyright (c) 1989, 1993
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 *        The Regents of the University of California.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#include <sys/param.h>
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#include <signal.h>
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int
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sigvec(signo, sv, osv)
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        int signo;
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        struct sigvec *sv, *osv;
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{
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        int ret;
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        if (sv)
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                sv->sv_flags ^= SV_INTERRUPT;        /* !SA_INTERRUPT */
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        ret = sigaction(signo, (struct sigaction *)sv, (struct sigaction *)osv);
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        if (ret == 0 && osv)
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                osv->sv_flags ^= SV_INTERRUPT;        /* !SA_INTERRUPT */
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        return (ret);
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}
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int
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sigsetmask(mask)
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        int mask;
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{
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        int omask, n;
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        n = sigprocmask(SIG_SETMASK, (sigset_t *) &mask, (sigset_t *) &omask);
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        if (n)
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                return (n);
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        return (omask);
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}
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int
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sigblock(mask)
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        int mask;
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{
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        int omask, n;
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        n = sigprocmask(SIG_BLOCK, (sigset_t *) &mask, (sigset_t *) &omask);
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        if (n)
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                return (n);
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        return (omask);
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}
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int
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sigpause(mask)
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        int mask;
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{
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        return (sigsuspend((sigset_t *)&mask));
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}