1N/A/***********************************************************************
1N/A* *
1N/A* This software is part of the ast package *
1N/A* Copyright (c) 1985-2011 AT&T Intellectual Property *
1N/A* and is licensed under the *
1N/A* Common Public License, Version 1.0 *
1N/A* by AT&T Intellectual Property *
1N/A* *
1N/A* A copy of the License is available at *
1N/A* http://www.opensource.org/licenses/cpl1.0.txt *
1N/A* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
1N/A* *
1N/A* Information and Software Systems Research *
1N/A* AT&T Research *
1N/A* Florham Park NJ *
1N/A* *
1N/A* Glenn Fowler <gsf@research.att.com> *
1N/A* David Korn <dgk@research.att.com> *
1N/A* Phong Vo <kpv@research.att.com> *
1N/A* *
1N/A***********************************************************************/
1N/A#pragma prototyped
1N/A
1N/A#include <ast.h>
1N/A
1N/A#if _lib_sigunblock
1N/A
1N/ANoN(sigunblock)
1N/A
1N/A#else
1N/A
1N/A#include <sig.h>
1N/A
1N/A#ifndef SIG_UNBLOCK
1N/A#undef _lib_sigprocmask
1N/A#endif
1N/A
1N/Aint
1N/Asigunblock(int s)
1N/A{
1N/A#if _lib_sigprocmask
1N/A int op;
1N/A sigset_t mask;
1N/A
1N/A sigemptyset(&mask);
1N/A if (s)
1N/A {
1N/A sigaddset(&mask, s);
1N/A op = SIG_UNBLOCK;
1N/A }
1N/A else op = SIG_SETMASK;
1N/A return(sigprocmask(op, &mask, NiL));
1N/A#else
1N/A#if _lib_sigsetmask
1N/A return(sigsetmask(s ? (sigsetmask(0L) & ~sigmask(s)) : 0L));
1N/A#else
1N/A NoP(s);
1N/A return(0);
1N/A#endif
1N/A#endif
1N/A}
1N/A
1N/A#endif