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* Common Public License, Version 1.0 * 7* by AT&T Intellectual Property * 8* * 9* A copy of the License is available at * 10* http://www.opensource.org/licenses/cpl1.0.txt * 11* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 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 28NoN(sigflag) 29 30#else 31 32#include <sig.h> 33 34int 35sigflag(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