133 lines
3.6 KiB
C
133 lines
3.6 KiB
C
/* $NetBSD: sigcompat.c,v 1.10 1998/09/27 13:21:28 christos Exp $ */
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. 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/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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#if 0
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static char sccsid[] = "@(#)sigcompat.c 8.1 (Berkeley) 6/2/93";
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#else
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__RCSID("$NetBSD: sigcompat.c,v 1.10 1998/09/27 13:21:28 christos Exp $");
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#endif
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#endif /* LIBC_SCCS and not lint */
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#include <sys/param.h>
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#include <signal.h>
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static __inline void sv2sa __P((struct sigaction *, const struct sigvec *));
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static __inline void sa2sv __P((struct sigvec *, const struct sigaction *));
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static __inline void
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sv2sa(sa, sv)
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struct sigaction *sa;
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const struct sigvec *sv;
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{
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sigemptyset(&sa->sa_mask);
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sa->sa_mask.__bits[0] = sv->sv_mask;
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sa->sa_handler = sv->sv_handler;
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sa->sa_flags = sv->sv_flags ^ SV_INTERRUPT; /* !SA_INTERRUPT */
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}
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static __inline void
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sa2sv(sv, sa)
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struct sigvec *sv;
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const struct sigaction *sa;
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{
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sv->sv_mask = sa->sa_mask.__bits[0];
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sv->sv_handler = sa->sa_handler;
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sv->sv_flags = sa->sa_flags ^ SV_INTERRUPT; /* !SA_INTERRUPT */
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}
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int
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sigvec(signo, nsv, osv)
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int signo;
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struct sigvec *nsv, *osv;
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{
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int ret;
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struct sigaction osa, nsa;
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if (nsv)
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sv2sa(&nsa, nsv);
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ret = sigaction(signo, nsv ? &nsa : NULL, osv ? &osa : NULL);
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if (ret == 0 && osv)
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sa2sv(osv, &osa);
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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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sigset_t nmask, omask;
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int n;
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sigemptyset(&nmask);
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nmask.__bits[0] = mask;
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n = sigprocmask(SIG_SETMASK, &nmask, &omask);
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if (n)
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return (n);
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return (omask.__bits[0]);
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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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sigset_t nmask, omask;
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int n;
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sigemptyset(&nmask);
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nmask.__bits[0] = mask;
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n = sigprocmask(SIG_BLOCK, &nmask, &omask);
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if (n)
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return (n);
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return (omask.__bits[0]);
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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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sigset_t nmask;
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sigemptyset(&nmask);
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nmask.__bits[0] = mask;
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return (sigsuspend(&nmask));
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}
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