1 /*********************************************************************** 2 * * 3 * This software is part of the ast package * 4 * Copyright (c) 1985-2011 AT&T Intellectual Property * 5 * and is licensed under the * 6 * Eclipse Public License, Version 1.0 * 7 * by AT&T Intellectual Property * 8 * * 9 * A copy of the License is available at * 10 * http://www.eclipse.org/org/documents/epl-v10.html * 11 * (with md5 checksum b35adb5213ca9657e911e9befb180842) * 12 * * 13 * Information and Software Systems Research * 14 * AT&T Research * 15 * Florham Park NJ * 16 * * 17 * Glenn Fowler <gsf@research.att.com> * 18 * David Korn <dgk@research.att.com> * 19 * Phong Vo <kpv@research.att.com> * 20 * * 21 ***********************************************************************/ 22 #pragma prototyped 23 24 #include <ast.h> 25 26 #if _lib_sigflag 27 28 NoN(sigflag) 29 30 #else 31 32 #include <sig.h> 33 34 int 35 sigflag(int sig, int flags, int set) 36 { 37 #if _lib_sigaction 38 struct sigaction sa; 39 40 if (sigaction(sig, NiL, &sa)) 41 return -1; 42 if (set) 43 sa.sa_flags |= flags; 44 else 45 sa.sa_flags &= ~flags; 46 return sigaction(sig, &sa, NiL); 47 #else 48 return -1; 49 #endif 50 } 51 52 #endif 53