2013-09-30 15:12:40 +02:00
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/*
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* Copyright (C) 2013 Freie Universität Berlin
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*
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* This file subject to the terms and conditions of the GNU Lesser General
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* Public License. See the file LICENSE in the top level directory for more
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* details.
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*/
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/**
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* @addtogroup posix
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* @{
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*/
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/**
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* @file unistd.h
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* @brief standard symbolic constants and types
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* @see <a href="http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/unistd.h.html">
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* The Open Group Base Specifications Issue 7, <unistd.h>
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* </a>
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*
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* @author Freie Universität Berlin
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* @author Martin Lenders <mlenders@inf.fu-berlin.de>
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*/
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#ifndef _UNISTD_H
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#define _UNISTD_H
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2013-09-30 15:48:35 +02:00
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#define STDIN_FILENO 0 ///< stdin file descriptor
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#define STDOUT_FILENO 1 ///< stdout file descriptor
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#define STDERR_FILENO 2 ///< stderr file descriptor
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2013-09-30 15:12:40 +02:00
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/**
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* @brief Close a file descriptor.
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* @details shall deallocate the file descriptor indicated by *fildes*. To
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* deallocate means to make the file descriptor available for return
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* by subsequent calls to open() or other functions that allocate file
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* descriptors. All outstanding record locks owned by the process on
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* the file associated with the file descriptor shall be removed (that
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* is, unlocked).
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*
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* @see <a href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/close.html">
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* The Open Group Base Specification Issue 7, close
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* </a>
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*
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* @param[in] fildes The file descriptor to the file which is to close.
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* @return Upon successful completion, 0 shall be returned; otherwise, -1
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* shall be returned and errno set to indicate the error.
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*/
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int close(int fildes);
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/**
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* @}
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*/
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#endif /* _UNISTD_H */
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