blob: 27faca769472e0fdec00b52dc3d6334e16b7fc54 (
plain) (
tree)
|
|
/**
* @file
*
* @brief Data which Ease the Burden of Consistently Setting Errno
*
* This file contains macros and definitions which ease the burden
* of consistently setting errno and returning -1.
*/
/*
* COPYRIGHT (c) 1989-2006.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifndef _RTEMS_SETERR_H
#define _RTEMS_SETERR_H
/**
* @defgroup RTEMSScoreSetErr Set Errno
*
* @ingroup RTEMSScore
*
*/
/**@{*/
#include <errno.h>
/**
* This is a helper macro which will set the variable errno and return
* the specified value to the caller.
*
* @param[in] _error is the error code
* @param[in] _value is the value to return
*/
#define rtems_set_errno_and_return_value( _error, _value ) \
do { errno = ( _error ); return ( _value ); } while ( 0 )
/**
* This is a helper macro which will set the variable errno and return
* -1 to the caller. This pattern is common to many POSIX methods.
*
* @param[in] _error is the error code
*/
#define rtems_set_errno_and_return_minus_one( _error ) \
rtems_set_errno_and_return_value( _error, -1 )
/**@}*/
#endif
/* end of include file */
|
