Set Error Number Support

Files
file	cpukit/include/rtems/seterr.h
	This header file defines macros to set errno and return minus one.

Macros
#define	rtems_set_errno_and_return_value(_error, _value)
#define	rtems_set_errno_and_return_minus_one(_error)

Detailed Description

Macro Definition Documentation

rtems_set_errno_and_return_minus_one

#define rtems_set_errno_and_return_minus_one

(

_error

)

Value:

rtems_set_errno_and_return_value( _error, -1 )

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.

Parameters

[in]

_error

is the error code

rtems_set_errno_and_return_value

#define rtems_set_errno_and_return_value	(		_error,
			_value )

Value:

do { errno = ( _error ); return ( _value ); } while ( 0 )

This is a helper macro which will set the variable errno and return the specified value to the caller.

Parameters

[in]	_error	is the error code
[in]	_value	is the value to return