305 lines
8.0 KiB
C
305 lines
8.0 KiB
C
/* $NetBSD: tty_conf.c,v 1.30 2000/11/15 01:42:53 enami Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1982, 1986, 1991, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
* (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.
|
|
*
|
|
* 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.
|
|
*
|
|
* @(#)tty_conf.c 8.5 (Berkeley) 1/9/95
|
|
*/
|
|
|
|
#include "opt_compat_freebsd.h"
|
|
#include "opt_compat_43.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/buf.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/tty.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/ttycom.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/malloc.h>
|
|
|
|
#include "tb.h"
|
|
#if NTB > 0
|
|
int tbopen __P((dev_t dev, struct tty *tp));
|
|
int tbclose __P((struct tty *tp, int flags));
|
|
int tbread __P((struct tty *tp, struct uio *uio, int flags));
|
|
int tbtioctl __P((struct tty *tp, u_long cmd, caddr_t data,
|
|
int flag, struct proc *p));
|
|
int tbinput __P((int c, struct tty *tp));
|
|
#endif
|
|
|
|
#include "sl.h"
|
|
#if NSL > 0
|
|
int slopen __P((dev_t dev, struct tty *tp));
|
|
int slclose __P((struct tty *tp, int flags));
|
|
int sltioctl __P((struct tty *tp, u_long cmd, caddr_t data,
|
|
int flag, struct proc *p));
|
|
int slinput __P((int c, struct tty *tp));
|
|
int slstart __P((struct tty *tp));
|
|
#endif
|
|
|
|
#include "ppp.h"
|
|
#if NPPP > 0
|
|
int pppopen __P((dev_t dev, struct tty *tp));
|
|
int pppclose __P((struct tty *tp, int flags));
|
|
int ppptioctl __P((struct tty *tp, u_long cmd, caddr_t data,
|
|
int flag, struct proc *p));
|
|
int pppinput __P((int c, struct tty *tp));
|
|
int pppstart __P((struct tty *tp));
|
|
int pppread __P((struct tty *tp, struct uio *uio, int flag));
|
|
int pppwrite __P((struct tty *tp, struct uio *uio, int flag));
|
|
#endif
|
|
|
|
#include "strip.h"
|
|
#if NSTRIP > 0
|
|
int stripopen __P((dev_t dev, struct tty *tp));
|
|
int stripclose __P((struct tty *tp, int flags));
|
|
int striptioctl __P((struct tty *tp, u_long cmd, caddr_t data,
|
|
int flag, struct proc *p));
|
|
int stripinput __P((int c, struct tty *tp));
|
|
int stripstart __P((struct tty *tp));
|
|
#endif
|
|
|
|
|
|
struct linesw termios_disc =
|
|
{ "termios", 0, ttylopen, ttylclose, ttread, ttwrite, nullioctl,
|
|
ttyinput, ttstart, ttymodem }; /* 0- termios */
|
|
struct linesw defunct_disc =
|
|
{ "defunct", 1, ttynodisc, ttyerrclose, ttyerrio, ttyerrio, nullioctl,
|
|
ttyerrinput, ttyerrstart, nullmodem }; /* 1- defunct */
|
|
#if defined(COMPAT_43) || defined(COMPAT_FREEBSD)
|
|
struct linesw ntty_disc =
|
|
{ "ntty", 2, ttylopen, ttylclose, ttread, ttwrite, nullioctl,
|
|
ttyinput, ttstart, ttymodem }; /* 2- old NTTYDISC */
|
|
#endif
|
|
#if NTB > 0
|
|
struct linesw table_disc =
|
|
{ "table", 3, tbopen, tbclose, tbread, ttyerrio, tbtioctl,
|
|
tbinput, ttstart, nullmodem }; /* 3- TABLDISC */
|
|
#endif
|
|
#if NSL > 0
|
|
struct linesw slip_disc =
|
|
{ "slip", 4, slopen, slclose, ttyerrio, ttyerrio, sltioctl,
|
|
slinput, slstart, nullmodem }; /* 4- SLIPDISC */
|
|
#endif
|
|
#if NPPP > 0
|
|
struct linesw ppp_disc =
|
|
{ "ppp", 5, pppopen, pppclose, pppread, pppwrite, ppptioctl,
|
|
pppinput, pppstart, ttymodem }; /* 5- PPPDISC */
|
|
#endif
|
|
#if NSTRIP > 0
|
|
struct linesw strip_disc =
|
|
{ "strip", 6, stripopen, stripclose, ttyerrio, ttyerrio, striptioctl,
|
|
stripinput, stripstart, nullmodem }; /* 6- STRIPDISC */
|
|
#endif
|
|
|
|
/*
|
|
* Registered line disciplines. Don't use this
|
|
* it will go away.
|
|
*/
|
|
#define LSWITCHBRK 20
|
|
struct linesw **linesw = NULL;
|
|
int nlinesw = 0;
|
|
int slinesw = 0;
|
|
|
|
/*
|
|
* Do nothing specific version of line
|
|
* discipline specific ioctl command.
|
|
*/
|
|
/*ARGSUSED*/
|
|
int
|
|
nullioctl(tp, cmd, data, flags, p)
|
|
struct tty *tp;
|
|
u_long cmd;
|
|
char *data;
|
|
int flags;
|
|
struct proc *p;
|
|
{
|
|
|
|
#ifdef lint
|
|
tp = tp; data = data; flags = flags; p = p;
|
|
#endif
|
|
return (-1);
|
|
}
|
|
|
|
/*
|
|
* Register a line discipline, optionally providing a
|
|
* specific discipline number for compatibility, -1 allocates
|
|
* a new one. Returns a discipline number, or -1 on
|
|
* failure.
|
|
*/
|
|
int
|
|
ttyldisc_add(disc, no)
|
|
struct linesw *disc;
|
|
int no;
|
|
{
|
|
|
|
/* You are not allowed to exceed TTLINEDNAMELEN */
|
|
if (strlen(disc->l_name) > TTLINEDNAMELEN)
|
|
return (-1);
|
|
|
|
/*
|
|
* You are not allowed to specify a line switch
|
|
* compatibility number greater than 10.
|
|
*/
|
|
if (no > 10)
|
|
return (-1);
|
|
|
|
if (linesw == NULL)
|
|
panic("adding uninitialized linesw");
|
|
|
|
if (no == -1) {
|
|
/* Hunt for any slot */
|
|
|
|
for (no = slinesw; no-- > 0;)
|
|
if (linesw[no] == NULL)
|
|
break;
|
|
/* if no == -1 we should realloc linesw, but for now... */
|
|
if (no == -1)
|
|
return (-1);
|
|
}
|
|
|
|
/* Need a specific slot */
|
|
if (linesw[no] != NULL)
|
|
return (-1);
|
|
|
|
linesw[no] = disc;
|
|
disc->l_no = no;
|
|
|
|
/* Define size of table */
|
|
if (no >= nlinesw)
|
|
nlinesw = no + 1;
|
|
|
|
return (no);
|
|
}
|
|
|
|
/*
|
|
* Remove a line discipline by its name. Returns the
|
|
* discipline on success or NULL on failure.
|
|
*/
|
|
struct linesw *
|
|
ttyldisc_remove(name)
|
|
char *name;
|
|
{
|
|
struct linesw *disc;
|
|
int i;
|
|
|
|
if (linesw == NULL)
|
|
panic("removing uninitialized linesw");
|
|
|
|
for (i = 0; i < nlinesw; i++) {
|
|
if (linesw[i] && (strcmp(name, linesw[i]->l_name) == 0)) {
|
|
disc = linesw[i];
|
|
linesw[i] = NULL;
|
|
|
|
if (nlinesw == i + 1) {
|
|
/* Need to fix up array sizing */
|
|
while (i-- > 0 && linesw[i] == NULL)
|
|
continue;
|
|
nlinesw = i + 1;
|
|
}
|
|
return (disc);
|
|
}
|
|
}
|
|
return (NULL);
|
|
}
|
|
|
|
/*
|
|
* Look up a line discipline by its name.
|
|
*/
|
|
struct linesw *
|
|
ttyldisc_lookup(name)
|
|
char *name;
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < nlinesw; i++)
|
|
if (linesw[i] && (strcmp(name, linesw[i]->l_name) == 0))
|
|
return (linesw[i]);
|
|
return (NULL);
|
|
}
|
|
|
|
#define TTYLDISCINIT(s, v) \
|
|
do { \
|
|
if (ttyldisc_add(&(s), (v)) != (v)) \
|
|
panic(__CONCAT("ttyldisc_init: ", __STRING(s))); \
|
|
} while (0)
|
|
|
|
/*
|
|
* Register the basic line disciplines.
|
|
*/
|
|
void
|
|
ttyldisc_init()
|
|
{
|
|
|
|
/* Only initialize once */
|
|
if (linesw)
|
|
return;
|
|
|
|
slinesw = LSWITCHBRK;
|
|
linesw = malloc(slinesw * sizeof(struct linesw *),
|
|
M_TTYS, M_WAITOK);
|
|
bzero(linesw, slinesw * sizeof(struct linesw *));
|
|
|
|
TTYLDISCINIT(termios_disc, 0);
|
|
/* Do we really need this one? */
|
|
TTYLDISCINIT(defunct_disc, 1);
|
|
|
|
/*
|
|
* The following should really be moved to
|
|
* initialization code for each module.
|
|
*/
|
|
|
|
#if defined(COMPAT_43) || defined(COMPAT_FREEBSD)
|
|
TTYLDISCINIT(ntty_disc, 2);
|
|
#endif
|
|
#if NTB > 0
|
|
TTYLDISCINIT(table_disc, 3);
|
|
#endif
|
|
#if NSL > 0
|
|
TTYLDISCINIT(slip_disc, 4);
|
|
#endif
|
|
#if NPPP > 0
|
|
TTYLDISCINIT(ppp_disc, 5);
|
|
#endif
|
|
#if NSTRIP > 0
|
|
TTYLDISCINIT(strip_disc, 6);
|
|
#endif
|
|
}
|