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Annotation of Net2/sys/tty.h, revision 1.1

1.1     ! root        1: /*-
        !             2:  * Copyright (c) 1982, 1986 The Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms, with or without
        !             6:  * modification, are permitted provided that the following conditions
        !             7:  * are met:
        !             8:  * 1. Redistributions of source code must retain the above copyright
        !             9:  *    notice, this list of conditions and the following disclaimer.
        !            10:  * 2. Redistributions in binary form must reproduce the above copyright
        !            11:  *    notice, this list of conditions and the following disclaimer in the
        !            12:  *    documentation and/or other materials provided with the distribution.
        !            13:  * 3. All advertising materials mentioning features or use of this software
        !            14:  *    must display the following acknowledgement:
        !            15:  *     This product includes software developed by the University of
        !            16:  *     California, Berkeley and its contributors.
        !            17:  * 4. Neither the name of the University nor the names of its contributors
        !            18:  *    may be used to endorse or promote products derived from this software
        !            19:  *    without specific prior written permission.
        !            20:  *
        !            21:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            22:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            23:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            24:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            25:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            26:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            27:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            28:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            29:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            30:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            31:  * SUCH DAMAGE.
        !            32:  *
        !            33:  *     @(#)tty.h       7.10 (Berkeley) 6/26/91
        !            34:  */
        !            35: 
        !            36: #include <sys/termios.h>
        !            37: 
        !            38: /*
        !            39:  * Clists are character lists, which is a variable length linked list
        !            40:  * of cblocks, wiht a count of the number of characters in the list.
        !            41:  */
        !            42: struct clist {
        !            43:        int     c_cc;           /* count of characters in queue */
        !            44:        char    *c_cf;          /* first character/cblock */
        !            45:        char    *c_cl;          /* last chararacter/cblock */
        !            46: };
        !            47: 
        !            48: /*
        !            49:  * Per-tty structure.
        !            50:  *
        !            51:  * Should be split in two, into device and tty drivers.
        !            52:  * Glue could be masks of what to echo and circular buffer
        !            53:  * (low, high, timeout).
        !            54:  */
        !            55: struct tty {
        !            56:        struct  clist t_rawq;           /* queues */
        !            57:        struct  clist t_canq;
        !            58:        struct  clist t_outq;
        !            59:        int     (*t_oproc)();           /* device */
        !            60:        int     (*t_param)();           /* device */
        !            61:        struct  proc *t_rsel;           /* tty */
        !            62:        struct  proc *t_wsel;
        !            63:        caddr_t T_LINEP;                /* XXX */
        !            64:        caddr_t t_addr;                 /* ??? */
        !            65:        dev_t   t_dev;                  /* device */
        !            66:        int     t_flags;                /* (compat) some of both */
        !            67:        int     t_state;                /* some of both */
        !            68:        struct  session *t_session;     /* tty */
        !            69:        struct  pgrp *t_pgrp;           /* foreground process group */
        !            70:        char    t_line;                 /* glue */
        !            71:        short   t_col;                  /* tty */
        !            72:        short   t_rocount, t_rocol;     /* tty */
        !            73:        short   t_hiwat;                /* hi water mark */
        !            74:        short   t_lowat;                /* low water mark */
        !            75:        struct  winsize t_winsize;      /* window size */
        !            76:        struct  termios t_termios;      /* termios state */
        !            77: #define        t_iflag         t_termios.c_iflag
        !            78: #define        t_oflag         t_termios.c_oflag
        !            79: #define        t_cflag         t_termios.c_cflag
        !            80: #define        t_lflag         t_termios.c_lflag
        !            81: #define        t_min           t_termios.c_min
        !            82: #define        t_time          t_termios.c_time
        !            83: #define        t_cc            t_termios.c_cc
        !            84: #define t_ispeed       t_termios.c_ispeed
        !            85: #define t_ospeed       t_termios.c_ospeed
        !            86:        long    t_cancc;                /* stats */
        !            87:        long    t_rawcc;
        !            88:        long    t_outcc;
        !            89:        short   t_gen;                  /* generation number */
        !            90: };
        !            91: 
        !            92: #define        TTIPRI  25                      /* sleep priority for tty reads */
        !            93: #define        TTOPRI  26                      /* sleep priority for tty writes */
        !            94: 
        !            95: #define        TTMASK  15
        !            96: #define        OBUFSIZ 100
        !            97: #define        TTYHOG  1024
        !            98: 
        !            99: #ifdef KERNEL
        !           100: #define TTMAXHIWAT     roundup(2048, CBSIZE)
        !           101: #define TTMINHIWAT     roundup(100, CBSIZE)
        !           102: #define TTMAXLOWAT     256
        !           103: #define TTMINLOWAT     32
        !           104: extern struct ttychars ttydefaults;
        !           105: #endif /* KERNEL */
        !           106: 
        !           107: /* internal state bits */
        !           108: #define        TS_TIMEOUT      0x000001        /* delay timeout in progress */
        !           109: #define        TS_WOPEN        0x000002        /* waiting for open to complete */
        !           110: #define        TS_ISOPEN       0x000004        /* device is open */
        !           111: #define        TS_FLUSH        0x000008        /* outq has been flushed during DMA */
        !           112: #define        TS_CARR_ON      0x000010        /* software copy of carrier-present */
        !           113: #define        TS_BUSY         0x000020        /* output in progress */
        !           114: #define        TS_ASLEEP       0x000040        /* wakeup when output done */
        !           115: #define        TS_XCLUDE       0x000080        /* exclusive-use flag against open */
        !           116: #define        TS_TTSTOP       0x000100        /* output stopped by ctl-s */
        !           117: /* was TS_HUPCLS       0x000200         * hang up upon last close */
        !           118: #define        TS_TBLOCK       0x000400        /* tandem queue blocked */
        !           119: #define        TS_RCOLL        0x000800        /* collision in read select */
        !           120: #define        TS_WCOLL        0x001000        /* collision in write select */
        !           121: #define        TS_ASYNC        0x004000        /* tty in async i/o mode */
        !           122: /* state for intra-line fancy editing work */
        !           123: #define        TS_BKSL         0x010000        /* state for lowercase \ work */
        !           124: #define        TS_ERASE        0x040000        /* within a \.../ for PRTRUB */
        !           125: #define        TS_LNCH         0x080000        /* next character is literal */
        !           126: #define        TS_TYPEN        0x100000        /* retyping suspended input (PENDIN) */
        !           127: #define        TS_CNTTB        0x200000        /* counting tab width, ignore FLUSHO */
        !           128: 
        !           129: #define        TS_LOCAL        (TS_BKSL|TS_ERASE|TS_LNCH|TS_TYPEN|TS_CNTTB)
        !           130: 
        !           131: /* define partab character types */
        !           132: #define        ORDINARY        0
        !           133: #define        CONTROL         1
        !           134: #define        BACKSPACE       2
        !           135: #define        NEWLINE         3
        !           136: #define        TAB             4
        !           137: #define        VTAB            5
        !           138: #define        RETURN          6
        !           139: 
        !           140: struct speedtab {
        !           141:         int sp_speed;
        !           142:         int sp_code;
        !           143: };
        !           144: /*
        !           145:  * Flags on character passed to ttyinput
        !           146:  */
        !           147: #define TTY_CHARMASK    0x000000ff      /* Character mask */
        !           148: #define TTY_QUOTE       0x00000100      /* Character quoted */
        !           149: #define TTY_ERRORMASK   0xff000000      /* Error mask */
        !           150: #define TTY_FE          0x01000000      /* Framing error or BREAK condition */
        !           151: #define TTY_PE          0x02000000      /* Parity error */
        !           152: 
        !           153: /*
        !           154:  * Is tp controlling terminal for p
        !           155:  */
        !           156: #define isctty(p, tp)  ((p)->p_session == (tp)->t_session && \
        !           157:                         (p)->p_flag&SCTTY)
        !           158: /*
        !           159:  * Is p in background of tp
        !           160:  */
        !           161: #define isbackground(p, tp)    (isctty((p), (tp)) && \
        !           162:                                (p)->p_pgrp != (tp)->t_pgrp)
        !           163: /*
        !           164:  * Modem control commands (driver).
        !           165:  */
        !           166: #define        DMSET           0
        !           167: #define        DMBIS           1
        !           168: #define        DMBIC           2
        !           169: #define        DMGET           3
        !           170: 
        !           171: #ifdef KERNEL
        !           172: /* symbolic sleep message strings */
        !           173: extern  char ttyin[], ttyout[], ttopen[], ttclos[], ttybg[], ttybuf[];
        !           174: #endif

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