*/
#include <stdio.h>
+#include <errno.h>
int _PDCLIB_prepwrite( struct _PDCLIB_file_t * stream )
{
( stream->status & ( _PDCLIB_FREAD | _PDCLIB_ERRORFLAG | _PDCLIB_WIDESTREAM | _PDCLIB_EOFFLAG ) ) ||
! ( stream->status & ( _PDCLIB_FWRITE | _PDCLIB_FAPPEND | _PDCLIB_FRW ) ) )
{
- _PDCLIB_errno = _PDCLIB_EIO;
+ /* Function called on illegal (e.g. input) stream.
+ See the comments on implementation-defined errno values in
+ <_PDCLIB_config.h>.
+ */
+ errno = EINVAL;
stream->status |= _PDCLIB_ERRORFLAG;
return EOF;
}