int fflush(FAR FILE *stream)
{
int ret;
/* Is the stream argument NULL? */
if (!stream)
{
/* Yes... then this is a request to flush all streams */
ret = lib_flushall(sched_getstreams());
}
else
{
ret = lib_fflush(stream, true);
}
/* Check the return value */
if (ret < 0)
{
/* An error occurred during the flush AND/OR we were unable to flush
* all of the buffered write data. Set the errno value.
*/
set_errno(-ret);
/* And return EOF on failure. */
return EOF;
}
return OK;
}
int fflush(FAR FILE *stream)
{
/* Is the stream argument NULL? */
if (!stream)
{
/* Yes... then this is a request to flush all streams */
return lib_flushall(sched_getstreams());
}
else if (lib_fflush(stream, true) != 0)
{
/* An error occurred during the flush AND/OR we were unable to flush all
* of the buffered write data. Return EOF on failure.
*/
return EOF;
}
return OK;
}
