Annotation of prex/include/sys/tty.h, Revision 1.1
1.1 ! nbrk 1: /*-
! 2: * Copyright (c) 1982, 1986, 1993
! 3: * The Regents of the University of California. All rights reserved.
! 4: * (c) UNIX System Laboratories, Inc.
! 5: * All or some portions of this file are derived from material licensed
! 6: * to the University of California by American Telephone and Telegraph
! 7: * Co. or Unix System Laboratories, Inc. and are reproduced herein with
! 8: * the permission of UNIX System Laboratories, Inc.
! 9: *
! 10: * Redistribution and use in source and binary forms, with or without
! 11: * modification, are permitted provided that the following conditions
! 12: * are met:
! 13: * 1. Redistributions of source code must retain the above copyright
! 14: * notice, this list of conditions and the following disclaimer.
! 15: * 2. Redistributions in binary form must reproduce the above copyright
! 16: * notice, this list of conditions and the following disclaimer in the
! 17: * documentation and/or other materials provided with the distribution.
! 18: * 3. Neither the name of the University nor the names of its contributors
! 19: * may be used to endorse or promote products derived from this software
! 20: * without specific prior written permission.
! 21: *
! 22: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 23: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 24: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 25: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 26: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 27: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 28: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 29: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 30: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 31: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 32: * SUCH DAMAGE.
! 33: *
! 34: * @(#)tty.h 8.7 (Berkeley) 1/9/95
! 35: */
! 36:
! 37: #ifndef _SYS_TTY_H
! 38: #define _SYS_TTY_H
! 39:
! 40: #include <sys/cdefs.h>
! 41: #include <sys/termios.h>
! 42:
! 43: #ifdef KERNEL
! 44:
! 45: #define TTYQ_SIZE 256
! 46: #define TTYQ_HIWAT 246
! 47:
! 48: struct tty_queue {
! 49: char tq_buf[TTYQ_SIZE];
! 50: int tq_head;
! 51: int tq_tail;
! 52: int tq_count;
! 53: };
! 54:
! 55: /*
! 56: * Per-tty structure.
! 57: */
! 58: struct tty {
! 59: struct tty_queue t_rawq; /* raw input queue */
! 60: struct tty_queue t_canq; /* canonical queue */
! 61: struct tty_queue t_outq; /* ouput queue */
! 62: struct termios t_termios; /* termios state */
! 63: struct winsize t_winsize; /* window size */
! 64:
! 65: struct event t_input_event; /* event to sleep */
! 66: void (*t_output)(struct tty *); /* start output */
! 67: int t_state; /* driver state */
! 68: int t_column; /* tty output column */
! 69: pid_t t_pgid; /* foreground process group. */
! 70: };
! 71:
! 72: #define t_iflag t_termios.c_iflag
! 73: #define t_oflag t_termios.c_oflag
! 74: #define t_cflag t_termios.c_cflag
! 75: #define t_lflag t_termios.c_lflag
! 76: #define t_cc t_termios.c_cc
! 77: #define t_ispeed t_termios.c_ispeed
! 78: #define t_ospeed t_termios.c_ospeed
! 79:
! 80: /* These flags are kept in t_state. */
! 81: #define TS_TTSTOP 0x00100 /* Output paused. */
! 82:
! 83: __BEGIN_DECLS
! 84: int tty_register(struct devio *io, struct tty *tp,
! 85: void (*output)(struct tty*));
! 86: int ttyq_getc(struct tty_queue *tq);
! 87: void ttyq_putc(int c, struct tty_queue *tq);
! 88: int ttyq_unputc(struct tty_queue *tq);
! 89:
! 90: int tty_read(struct tty *tp, char *buf, size_t *nbytes);
! 91: int tty_write(struct tty *tp, char *buf, size_t *nbyte);
! 92: int tty_ioctl(struct tty *tp, u_long cmd, void *data);
! 93: void tty_input(int c, struct tty *tp);
! 94: __END_DECLS
! 95:
! 96: #endif /* KERNEL */
! 97: #endif /* !_SYS_TTY_H */
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