diff options
Diffstat (limited to 'sys/kern/tty_conf.c')
| -rw-r--r-- | sys/kern/tty_conf.c | 205 |
1 files changed, 0 insertions, 205 deletions
diff --git a/sys/kern/tty_conf.c b/sys/kern/tty_conf.c deleted file mode 100644 index 77a9593..0000000 --- a/sys/kern/tty_conf.c +++ /dev/null @@ -1,205 +0,0 @@ -/*- - * Copyright (c) 2004 Poul-Henning Kamp. All rights reserved. - * 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. - * 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 8.4 (Berkeley) 1/21/94 - */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#include "opt_compat.h" - -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/tty.h> -#include <sys/conf.h> - -#ifndef MAXLDISC -#define MAXLDISC 9 -#endif - -static l_open_t l_noopen; -static l_close_t l_noclose; -static l_rint_t l_norint; -static l_start_t l_nostart; - -/* - * XXX it probably doesn't matter what the entries other than the l_open - * entry are here. The l_nullioctl and ttymodem entries still look fishy. - * Reconsider the removal of nullmodem anyway. It was too much like - * ttymodem, but a completely null version might be useful. - */ - -static struct linesw nodisc = { - .l_open = l_noopen, - .l_close = l_noclose, - .l_read = l_noread, - .l_write = l_nowrite, - .l_ioctl = l_nullioctl, - .l_rint = l_norint, - .l_start = l_nostart, - .l_modem = ttymodem -}; - -static struct linesw termios_disc = { - .l_open = tty_open, - .l_close = ttylclose, - .l_read = ttread, - .l_write = ttwrite, - .l_ioctl = l_nullioctl, - .l_rint = ttyinput, - .l_start = ttstart, - .l_modem = ttymodem -}; - -#ifdef COMPAT_43 -# define ntty_disc termios_disc -#else -# define ntty_disc nodisc -#endif - -struct linesw *linesw[MAXLDISC] = { - &termios_disc, /* 0 - termios */ - &nodisc, /* 1 - defunct */ - &ntty_disc, /* 2 - NTTYDISC */ - &nodisc, /* 3 - loadable */ - &nodisc, /* 4 - SLIPDISC */ - &nodisc, /* 5 - PPPDISC */ - &nodisc, /* 6 - NETGRAPHDISC */ - &nodisc, /* 7 - loadable */ - &nodisc, /* 8 - loadable */ -}; - -int nlinesw = sizeof (linesw) / sizeof (linesw[0]); - -#define LOADABLE_LDISC 7 - -/* - * ldisc_register: Register a line discipline. - * - * discipline: Index for discipline to load, or LDISC_LOAD for us to choose. - * linesw_p: Pointer to linesw_p. - * - * Returns: Index used or -1 on failure. - */ - -int -ldisc_register(int discipline, struct linesw *linesw_p) -{ - int slot = -1; - - if (discipline == LDISC_LOAD) { - int i; - for (i = LOADABLE_LDISC; i < MAXLDISC; i++) - if (linesw[i] == &nodisc) { - slot = i; - break; - } - } else if (discipline >= 0 && discipline < MAXLDISC) { - slot = discipline; - } - - if (slot != -1 && linesw_p) - linesw[slot] = linesw_p; - - return slot; -} - -/* - * ldisc_deregister: Deregister a line discipline obtained with - * ldisc_register. - * - * discipline: Index for discipline to unload. - */ - -void -ldisc_deregister(int discipline) -{ - - if (discipline < MAXLDISC) - linesw[discipline] = &nodisc; -} - -/* - * "no" and "null" versions of line discipline functions - */ - -static int -l_noopen(struct cdev *dev, struct tty *tp) -{ - - return (ENODEV); -} - -static int -l_noclose(struct tty *tp, int flag) -{ - - return (ENODEV); -} - -int -l_noread(struct tty *tp, struct uio *uio, int flag) -{ - - return (ENODEV); -} - -int -l_nowrite(struct tty *tp, struct uio *uio, int flag) -{ - - return (ENODEV); -} - -static int -l_norint(int c, struct tty *tp) -{ - - return (ENODEV); -} - -static int -l_nostart(struct tty *tp) -{ - - return (ENODEV); -} - -int -l_nullioctl(struct tty *tp, u_long cmd, char *data, int flags, struct thread *td) -{ - - return (ENOIOCTL); -} |
