1da2e3ebdSchin /*********************************************************************** 2da2e3ebdSchin * * 3da2e3ebdSchin * This software is part of the ast package * 4*3e14f97fSRoger A. Faulkner * Copyright (c) 1985-2010 AT&T Intellectual Property * 5da2e3ebdSchin * and is licensed under the * 6da2e3ebdSchin * Common Public License, Version 1.0 * 77c2fbfb3SApril Chin * by AT&T Intellectual Property * 8da2e3ebdSchin * * 9da2e3ebdSchin * A copy of the License is available at * 10da2e3ebdSchin * http://www.opensource.org/licenses/cpl1.0.txt * 11da2e3ebdSchin * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 12da2e3ebdSchin * * 13da2e3ebdSchin * Information and Software Systems Research * 14da2e3ebdSchin * AT&T Research * 15da2e3ebdSchin * Florham Park NJ * 16da2e3ebdSchin * * 17da2e3ebdSchin * Glenn Fowler <gsf@research.att.com> * 18da2e3ebdSchin * David Korn <dgk@research.att.com> * 19da2e3ebdSchin * Phong Vo <kpv@research.att.com> * 20da2e3ebdSchin * * 21da2e3ebdSchin ***********************************************************************/ 22da2e3ebdSchin #pragma prototyped 23da2e3ebdSchin 24da2e3ebdSchin #include <ast.h> 25da2e3ebdSchin 26da2e3ebdSchin #if _lib_sigunblock 27da2e3ebdSchin 28da2e3ebdSchin NoN(sigunblock) 29da2e3ebdSchin 30da2e3ebdSchin #else 31da2e3ebdSchin 32da2e3ebdSchin #include <sig.h> 33da2e3ebdSchin 34da2e3ebdSchin #ifndef SIG_UNBLOCK 35da2e3ebdSchin #undef _lib_sigprocmask 36da2e3ebdSchin #endif 37da2e3ebdSchin 38da2e3ebdSchin int 39da2e3ebdSchin sigunblock(int s) 40da2e3ebdSchin { 41da2e3ebdSchin #if _lib_sigprocmask 42da2e3ebdSchin int op; 43da2e3ebdSchin sigset_t mask; 44da2e3ebdSchin 45da2e3ebdSchin sigemptyset(&mask); 46da2e3ebdSchin if (s) 47da2e3ebdSchin { 48da2e3ebdSchin sigaddset(&mask, s); 49da2e3ebdSchin op = SIG_UNBLOCK; 50da2e3ebdSchin } 51da2e3ebdSchin else op = SIG_SETMASK; 52da2e3ebdSchin return(sigprocmask(op, &mask, NiL)); 53da2e3ebdSchin #else 54da2e3ebdSchin #if _lib_sigsetmask 55da2e3ebdSchin return(sigsetmask(s ? (sigsetmask(0L) & ~sigmask(s)) : 0L)); 56da2e3ebdSchin #else 57da2e3ebdSchin NoP(s); 58da2e3ebdSchin return(0); 59da2e3ebdSchin #endif 60da2e3ebdSchin #endif 61da2e3ebdSchin } 62da2e3ebdSchin 63da2e3ebdSchin #endif 64