seterr.h File Reference

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Defines
#define	rtems_set_errno_and_return_minus_one(_error)   do { errno = (_error); return -1; } while(0)
#define	rtems_set_errno_and_return_minus_one_cast(_error, _cast)   do { errno = (_error); return (_cast) -1; } while(0)

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Detailed Description

This file contains macros and definitions which ease the burden of consistently setting errno and returning -1.

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Define Documentation

#define rtems_set_errno_and_return_minus_one

(

_error

)

do { errno = (_error); return -1; } 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.

Parameters:

[in]

_error

is the error code

#define rtems_set_errno_and_return_minus_one_cast	(	_error,
		_cast		)	do { errno = (_error); return (_cast) -1; } 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.

Parameters:

[in]	_error	is the error code
[in]	_cast	is the type to which -1 must be cast

Note:

It is similar to rtems_set_errno_and_return_minus_one but this -1 value is cast to something other than an int.