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Annotation of researchv9/sys/h/ttyld.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * TTY line discipline processing
        !             3:  */
        !             4: struct ttyld
        !             5: {
        !             6:        short   t_flags;        /* mode, settable by ioctl call */
        !             7:        short   t_state;        /* internal state, not visible externally */
        !             8:        char    t_delct;        /* number of delimiters in input q */
        !             9:        char    t_col;          /* printing column of device */
        !            10:        char    t_erase;        /* erase character */
        !            11:        char    t_kill;         /* kill character */
        !            12:        struct  tchars t_chr;
        !            13: };
        !            14: 
        !            15: union stmsg {
        !            16:        struct ioc0 {
        !            17:                int     com;
        !            18:        } ioc0;
        !            19:        struct ioc1 {
        !            20:                int     com;
        !            21:                struct  sgttyb  sb;
        !            22:        } ioc1;
        !            23:        struct ioc2 {
        !            24:                int     com;
        !            25:                struct  tchars  sb;
        !            26:        } ioc2;
        !            27:        struct ioc3 {
        !            28:                int     com;
        !            29:                struct  ttydevb sb;
        !            30:        } ioc3;
        !            31:        struct {
        !            32:                int     com;
        !            33:                char    xxx[16];
        !            34:        } iocx;
        !            35: };
        !            36: 
        !            37: #define        CTRL(c) ('c'&037)
        !            38: 
        !            39: /* default special characters */
        !            40: #define        CERASE  '\010'
        !            41: #define        CEOT    CTRL(d)
        !            42: #define        CKILL   '@'
        !            43: #define        CQUIT   034             /* FS, cntl shift L */
        !            44: #define        CINTR   0177            /* DEL */
        !            45: #define        CSTOP   CTRL(s)
        !            46: #define        CSTART  CTRL(q)
        !            47: #define        CBRK    0377
        !            48: 
        !            49: /* define partab character types */
        !            50: #define        ORDINARY        0
        !            51: #define        CONTROL         1
        !            52: #define        BACKSPACE       2
        !            53: #define        NEWLINE         3
        !            54: #define        TAB             4
        !            55: #define        VTAB            5
        !            56: #define        RETURN          6
        !            57: 
        !            58: /* states */
        !            59: #define        TTSTOP  01              /* stopped by CTL S */
        !            60: #define        TTESC   02              /* have just seen \ */
        !            61: #define        TTCR    04              /* turning LF into CRLF */
        !            62: #define        TTUSE   010             /* this structure in use */
        !            63: #define        TTBLOCK 020             /* have sent tandem STOP */

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