1/* filecntl.h - Definitions to set file descriptors to close-on-exec. */
2
3/* Copyright (C) 1993 Free Software Foundation, Inc.
4
5   This file is part of GNU Bash, the Bourne Again SHell.
6
7   Bash is free software; you can redistribute it and/or modify it under
8   the terms of the GNU General Public License as published by the Free
9   Software Foundation; either version 2, or (at your option) any later
10   version.
11
12   Bash is distributed in the hope that it will be useful, but WITHOUT ANY
13   WARRANTY; without even the implied warranty of MERCHANTABILITY or
14   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
15   for more details.
16
17   You should have received a copy of the GNU General Public License along
18   with Bash; see the file COPYING.  If not, write to the Free Software
19   Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
20
21#if !defined (_FILECNTL_H_)
22#define _FILECNTL_H_
23
24#include <fcntl.h>
25
26/* Definitions to set file descriptors to close-on-exec, the Posix way. */
27#if !defined (FD_CLOEXEC)
28#define FD_CLOEXEC     1
29#endif
30
31#define FD_NCLOEXEC    0
32
33#define SET_CLOSE_ON_EXEC(fd)  (fcntl ((fd), F_SETFD, FD_CLOEXEC))
34#define SET_OPEN_ON_EXEC(fd)   (fcntl ((fd), F_SETFD, FD_NCLOEXEC))
35
36/* How to open a file in non-blocking mode, the Posix.1 way. */
37#if !defined (O_NONBLOCK)
38#  if defined (O_NDELAY)
39#    define O_NONBLOCK O_NDELAY
40#  else
41#    define O_NONBLOCK 0
42#  endif
43#endif
44
45#endif /* ! _FILECNTL_H_ */
46