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Annotation of prex-old/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    buf[TTYQ_SIZE];
        !            50:        int     head;
        !            51:        int     tail;
        !            52:        int     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 */