45 lines
1.4 KiB
C
45 lines
1.4 KiB
C
/* filecntl.h - Definitions to set file descriptors to close-on-exec. */
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/* Copyright (C) 1993 Free Software Foundation, Inc.
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This file is part of GNU Bash, the Bourne Again SHell.
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Bash is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2, or (at your option) any later
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version.
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Bash is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License along
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with Bash; see the file COPYING. If not, write to the Free Software
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Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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#if !defined (_FILECNTL_H_)
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#define _FILECNTL_H_
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#include <fcntl.h>
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/* Definitions to set file descriptors to close-on-exec, the Posix way. */
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#if !defined (FD_CLOEXEC)
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#define FD_CLOEXEC 1
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#endif
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#define FD_NCLOEXEC 0
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#define SET_CLOSE_ON_EXEC(fd) (fcntl ((fd), F_SETFD, FD_CLOEXEC))
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#define SET_OPEN_ON_EXEC(fd) (fcntl ((fd), F_SETFD, FD_NCLOEXEC))
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/* How to open a file in non-blocking mode, the Posix.1 way. */
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#if !defined (O_NONBLOCK)
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# if defined (O_NDELAY)
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# define O_NONBLOCK O_NDELAY
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# else
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# define O_NONBLOCK 0
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# endif
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#endif
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#endif /* ! _FILECNTL_H_ */
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