rem: ssize_t err;
add: status_t status;
context: static ssize_t console_write(void * cookie, off_t pos, const void *buf, size_t *len){	ssize_t err;	mutex_lock(&console_lock);	err = _console_write(buf, *len);	if (err < 0)		*len = 0;	else {		*len = err;		err = 0;	}	 	update_cursor(x, y);	mutex_unlock(&console_lock);	return err;}