uirda_close
uirda_open, uirda_close, uirda_read, stuirda_write, uirda_poll,
int uirda_close(void *, int, int, struct lwp *);
uirda_open, uirda_close, uirda_read, uirda_write, uirda_poll,
int uirda_close(void *, int, int, struct lwp *);