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
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