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