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

/*
* Copyright (c) UNIX System Laboratories, Inc.  All or some portions
* of this file are derived from material licensed to the
* University of California by American Telephone and Telegraph Co.
* or UNIX System Laboratories, Inc. and are reproduced herein with
* the permission of UNIX System Laboratories, Inc.
*/
/*-
* Copyright (c) 1982, 1986, 1991 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*      This product includes software developed by the University of
*      California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*      from: @(#)tty_conf.c    7.6 (Berkeley) 5/9/91
*      $Id: tty_conf.c,v 1.6 1993/11/27 16:04:36 davidg Exp $
*/

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

int     enodev();
int     nullop();
static int nullioctl(struct tty *, int, caddr_t, int);

#define VE(x) ((void (*)())x)   /* XXX */
#define IE(x) ((int (*)())x)    /* XXX */

/* XXX - doesn't work */
#include "tb.h"
#if NTB > 0
int     tbopen(),tbclose(),tbread(),tbinput(),tbioctl();
#endif

#include "sl.h"
#if NSL > 0
int     slopen(),slclose(),slinput(),sltioctl(),slstart();
#endif
#include "ppp.h"
#if NPPP > 0
int     pppopen(),pppclose(),pppread(),pppwrite(),pppinput();
int     ppptioctl(),pppstart(),pppselect();
#endif


struct  linesw linesw[] =
{
       ttyopen, ttylclose, ttread, ttwrite, nullioctl,
       ttyinput, enodev, nullop, ttstart, ttymodem,    /* 0- termios */

       IE(enodev), VE(enodev), IE(enodev), IE(enodev), IE(enodev), /* 1- defunct */
       VE(enodev), IE(enodev), IE(enodev), VE(enodev), IE(enodev),

       ttyopen, ttylclose, ttread, ttwrite, nullioctl,
       ttyinput, enodev, nullop, ttstart, ttymodem,    /* 2- NTTYDISC */

#if NTB > 0
       tbopen, tbclose, tbread, IE(enodev), tbioctl,
       tbinput, enodev, nullop, ttstart, nullmodem,    /* 3- TABLDISC */
#else
       IE(enodev), VE(enodev), IE(enodev), IE(enodev), IE(enodev),
       VE(enodev), IE(enodev), IE(enodev), VE(enodev), IE(enodev),
#endif
#if NSL > 0
       slopen, VE(slclose), IE(enodev), IE(enodev), sltioctl,
       VE(slinput), enodev, nullop, VE(slstart), nullmodem, /* 4- SLIPDISC */
#else
       IE(enodev), VE(enodev), IE(enodev), IE(enodev), IE(enodev),
       VE(enodev), IE(enodev), IE(enodev), VE(enodev), IE(enodev),
#endif
#if NPPP > 0
       pppopen, VE(pppclose), pppread, pppwrite, ppptioctl,
       VE(pppinput), enodev, nullop, VE(pppstart), ttymodem, /* 5- PPPDISC */
#else
       IE(enodev), VE(enodev), IE(enodev), IE(enodev), IE(enodev),
       VE(enodev), IE(enodev), IE(enodev), VE(enodev), IE(enodev),
#endif
};

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

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

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