must rm before ln

[unix-history] / usr / src / sys / kern / tty_conf.c

/*      tty_conf.c      4.3     83/05/27        */

#include "../h/param.h"
#include "../h/systm.h"
#include "../h/buf.h"
#include "../h/tty.h"
#include "../h/conf.h"

int     nodev();
int     nulldev();

int     ttyopen(),ttyclose(),ttread(),ttwrite(),nullioctl(),ttstart();
int     ttyinput();

#include "bk.h"
#if NBK > 0
int     bkopen(),bkclose(),bkread(),bkinput(),bkioctl();
#endif

#include "tb.h"
#if NTB > 0
int     tbopen(),tbclose(),tbread(),tbinput(),tbioctl();
#endif

struct  linesw linesw[] =
{
       ttyopen, nodev, ttread, ttwrite, nullioctl,
       ttyinput, nodev, nulldev, ttstart, nulldev,
#if NBK > 0
       bkopen, bkclose, bkread, ttwrite, bkioctl,
       bkinput, nodev, nulldev, ttstart, nulldev,
#else
       nodev, nodev, nodev, nodev, nodev,
       nodev, nodev, nodev, nodev, nodev,
#endif
       ttyopen, ttyclose, ttread, ttwrite, nullioctl,
       ttyinput, nodev, nulldev, ttstart, nulldev,
#if NTB > 0
       tbopen, tbclose, tbread, nodev, tbioctl,
       tbinput, nodev, nulldev, ttstart, nulldev,              /* 3 */
#else
       nodev, nodev, nodev, nodev, nodev,
       nodev, nodev, nodev, nodev, nodev,
#endif
#if NTB > 0
       tbopen, tbclose, tbread, nodev, tbioctl,
       tbinput, nodev, nulldev, ttstart, nulldev,              /* 4 */
#else
       nodev, nodev, nodev, nodev, nodev,
       nodev, nodev, nodev, nodev, nodev,
#endif
};

int     nldisp = sizeof (linesw) / sizeof (linesw[0]);

/*
* Do nothing specific version of line
* discipline specific ioctl command.
*/
/*ARGSUSED*/
nullioctl(tp, cmd, data, flags)
       struct tty *tp;
       char *data;
       int flags;
{

#ifdef lint
       tp = tp; data = data; flags = flags;
#endif
       return (-1);
}