scoutos / prex-0.9.0 / bsp / drv / include / tty.h @ 03e9c04a
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/*-
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* Copyright (c) 1982, 1986, 1993
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* The Regents of the University of California. All rights reserved.
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* (c) UNIX System Laboratories, Inc.
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* All or some portions of this file are derived from material licensed
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* to the University of California by American Telephone and Telegraph
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* Co. or Unix System Laboratories, Inc. and are reproduced herein with
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* the permission of UNIX System Laboratories, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)tty.h 8.7 (Berkeley) 1/9/95
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*/
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#ifndef _SYS_TTY_H_
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#define _SYS_TTY_H_
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#include <sys/cdefs.h> |
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#include <sys/termios.h> |
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#include <sys/syslimits.h> |
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#define TTYQ_SIZE MAX_INPUT
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#define TTYQ_HIWAT (TTYQ_SIZE - 10) |
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struct tty_queue {
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char tq_buf[TTYQ_SIZE];
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int tq_head;
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int tq_tail;
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int tq_count;
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}; |
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/*
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* Per-tty structure.
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*/
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struct tty {
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struct tty_queue t_rawq; /* raw input queue */ |
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struct tty_queue t_canq; /* canonical queue */ |
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struct tty_queue t_outq; /* ouput queue */ |
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struct termios t_termios; /* termios state */ |
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struct winsize t_winsize; /* window size */ |
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struct event t_input; /* event for input data ready */ |
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struct event t_output; /* event for output completion */ |
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void (*t_oproc)(struct tty *); /* routine to start output */ |
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device_t t_dev; /* device */
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int t_state; /* driver state */ |
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int t_column; /* tty output column */ |
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pid_t t_pgid; /* foreground process group. */
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task_t t_sigtask; /* task to dispatch the tty signal */
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int t_signo; /* pending signal# */ |
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struct dpc t_dpc; /* dpc for tty */ |
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}; |
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#define t_iflag t_termios.c_iflag
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#define t_oflag t_termios.c_oflag
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#define t_cflag t_termios.c_cflag
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#define t_lflag t_termios.c_lflag
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#define t_cc t_termios.c_cc
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#define t_ispeed t_termios.c_ispeed
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#define t_ospeed t_termios.c_ospeed
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/* These flags are kept in t_state. */
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#define TS_ASLEEP 0x00001 /* Process waiting for tty. */ |
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#define TS_BUSY 0x00004 /* Draining output. */ |
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#define TS_TIMEOUT 0x00100 /* Wait for output char processing. */ |
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#define TS_TTSTOP 0x00200 /* Output paused. */ |
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#define TS_ISIG 0x00400 /* Input is interrupted by signal. */ |
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__BEGIN_DECLS |
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int tty_read(struct tty *, char *, size_t *); |
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int tty_write(struct tty *, char *, size_t *); |
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int tty_ioctl(struct tty *, u_long, void *); |
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void tty_input(int, struct tty *); |
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int tty_getc(struct tty_queue *); |
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void tty_done(struct tty *); |
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void tty_attach(struct tty *); |
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__END_DECLS |
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#endif /* !_SYS_TTY_H_ */ |