2.3.3-74
[glibc.git] / sysdeps / unix / sysv / sco3.2.4 / bits / sigaction.h
blobf087388556b8f2e5a2f6f974840c7c60c01ca1ae
1 /* The proper definitions for SCO's sigaction.
2 Copyright (C) 1993, 1994, 1996, 1997 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18 02111-1307 USA. */
20 #ifndef _SIGNAL_H
21 # error "Never include <bits/sigaction.h> directly; use <signal.h> instead."
22 #endif
24 /* Structure describing the action to be taken when a signal arrives. */
25 struct sigaction
27 /* Signal handler. */
28 __sighandler_t sa_handler;
30 /* Additional set of signals to be blocked. */
31 __sigset_t sa_mask;
33 /* Special flags. */
34 int sa_flags;
37 /* Bits in `sa_flags'. */
38 #define SA_NOCLDSTOP 0x01 /* Don't send SIGCHLD when children stop. */
40 /* Values for the HOW argument to `sigprocmask'. */
41 #define SIG_SETMASK 0 /* Set the set of blocked signals. */
42 #define SIG_BLOCK 1 /* Block signals. */
43 #define SIG_UNBLOCK 2 /* Unblock signals. */