sm_io_automode
void sm_io_automode __P((SM_FILE_T *, SM_FILE_T *));
sm_io_automode(mci->mci_out, mci->mci_in);
sm_io_automode(mci->mci_out, mci->mci_in);
sm_io_automode(inchannel, outchannel);
sm_io_automode(newin, newout);
sm_io_automode(tlsin, tlsout);
sm_io_automode(OutChannel, InChannel);