forked from Imagelibrary/rtems
54 lines
1.3 KiB
C
54 lines
1.3 KiB
C
/**
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* @file
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*
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* @brief Data which Ease the Burden of Consistently Setting Errno
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*
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* This file contains macros and definitions which ease the burden
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* of consistently setting errno and returning -1.
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*/
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/*
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* COPYRIGHT (c) 1989-2006.
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* On-Line Applications Research Corporation (OAR).
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*/
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#ifndef _RTEMS_SETERR_H
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#define _RTEMS_SETERR_H
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/**
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* @defgroup RTEMSScoreSetErr Set Errno
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*
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* @ingroup RTEMSScore
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*
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*/
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/**@{*/
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#include <errno.h>
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/**
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* This is a helper macro which will set the variable errno and return
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* the specified value to the caller.
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*
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* @param[in] _error is the error code
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* @param[in] _value is the value to return
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*/
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#define rtems_set_errno_and_return_value( _error, _value ) \
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do { errno = ( _error ); return ( _value ); } while ( 0 )
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/**
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* This is a helper macro which will set the variable errno and return
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* -1 to the caller. This pattern is common to many POSIX methods.
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*
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* @param[in] _error is the error code
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*/
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#define rtems_set_errno_and_return_minus_one( _error ) \
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rtems_set_errno_and_return_value( _error, -1 )
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/**@}*/
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#endif
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/* end of include file */
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