termios.h

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/* The <termios.h> header is used for controlling tty modes. */

#ifndef _TERMIOS_H
#define _TERMIOS_H

typedef unsigned short tcflag_t;
typedef unsigned char cc_t;
typedef unsigned int speed_t;

#define NCCS               20   /* size of cc_c array, some extra space
                                 * for extensions. */

/* Primary terminal control structure. POSIX Table 7-1. */
struct termios {
  tcflag_t c_iflag;             /* input modes */
  tcflag_t c_oflag;             /* output modes */
  tcflag_t c_cflag;             /* control modes */
  tcflag_t c_lflag;             /* local modes */
  speed_t  c_ispeed;            /* input speed */
  speed_t  c_ospeed;            /* output speed */
  cc_t c_cc[NCCS];              /* control characters */
};

/* Values for termios c_iflag bit map.  POSIX Table 7-2. */
#define BRKINT          0x0001  /* signal interrupt on break */
#define ICRNL           0x0002  /* map CR to NL on input */
#define IGNBRK          0x0004  /* ignore break */
#define IGNCR           0x0008  /* ignore CR */
#define IGNPAR          0x0010  /* ignore characters with parity errors */
#define INLCR           0x0020  /* map NL to CR on input */
#define INPCK           0x0040  /* enable input parity check */
#define ISTRIP          0x0080  /* mask off 8th bit */
#define IXOFF           0x0100  /* enable start/stop input control */
#define IXON            0x0200  /* enable start/stop output control */
#define PARMRK          0x0400  /* mark parity errors in the input queue */

/* Values for termios c_oflag bit map.  POSIX Sec. 7.1.2.3. */
#define OPOST           0x0001  /* perform output processing */

/* Values for termios c_cflag bit map.  POSIX Table 7-3. */
#define CLOCAL          0x0001  /* ignore modem status lines */
#define CREAD           0x0002  /* enable receiver */
#define CSIZE           0x000C  /* number of bits per character */
#define         CS5     0x0000  /* if CSIZE is CS5, characters are 5 bits */
#define         CS6     0x0004  /* if CSIZE is CS6, characters are 6 bits */
#define         CS7     0x0008  /* if CSIZE is CS7, characters are 7 bits */
#define         CS8     0x000C  /* if CSIZE is CS8, characters are 8 bits */
#define CSTOPB          0x0010  /* send 2 stop bits if set, else 1 */
#define HUPCL           0x0020  /* hang up on last close */
#define PARENB          0x0040  /* enable parity on output */
#define PARODD          0x0080  /* use odd parity if set, else even */

/* Values for termios c_lflag bit map.  POSIX Table 7-4. */
#define ECHO            0x0001  /* enable echoing of input characters */
#define ECHOE           0x0002  /* echo ERASE as backspace */
#define ECHOK           0x0004  /* echo KILL */
#define ECHONL          0x0008  /* echo NL */
#define ICANON          0x0010  /* canonical input (erase and kill enabled) */
#define IEXTEN          0x0020  /* enable extended functions */
#define ISIG            0x0040  /* enable signals */
#define NOFLSH          0x0080  /* disable flush after interrupt or quit */
#define TOSTOP          0x0100  /* send SIGTTOU (job control, not implemented*/

/* Indices into c_cc array.  Default values in parentheses. POSIX Table 7-5. */
#define VEOF                 0  /* cc_c[VEOF] = EOF char (^D) */
#define VEOL                 1  /* cc_c[VEOL] = EOL char (undef) */
#define VERASE               2  /* cc_c[VERASE] = ERASE char (^H) */
#define VINTR                3  /* cc_c[VINTR] = INTR char (DEL) */
#define VKILL                4  /* cc_c[VKILL] = KILL char (^U) */
#define VMIN                 5  /* cc_c[VMIN] = MIN value for timer */
#define VQUIT                6  /* cc_c[VQUIT] = QUIT char (^\) */
#define VTIME                7  /* cc_c[VTIME] = TIME value for timer */
#define VSUSP                8  /* cc_c[VSUSP] = SUSP (^Z, ignored) */
#define VSTART               9  /* cc_c[VSTART] = START char (^S) */
#define VSTOP               10  /* cc_c[VSTOP] = STOP char (^Q) */

#define _POSIX_VDISABLE   (cc_t)0xFF    /* You can't even generate this 
                                         * character with 'normal' keyboards.
                                         * But some language specific keyboards
                                         * can generate 0xFF. It seems that all
                                         * 256 are used, so cc_t should be a
                                         * short...
                                         */

/* Values for the baud rate settings.  POSIX Table 7-6. */
#define B0              0x0000  /* hang up the line */
#define B50             0x1000  /* 50 baud */
#define B75             0x2000  /* 75 baud */
#define B110            0x3000  /* 110 baud */
#define B134            0x4000  /* 134.5 baud */
#define B150            0x5000  /* 150 baud */
#define B200            0x6000  /* 200 baud */
#define B300            0x7000  /* 300 baud */
#define B600            0x8000  /* 600 baud */
#define B1200           0x9000  /* 1200 baud */
#define B1800           0xA000  /* 1800 baud */
#define B2400           0xB000  /* 2400 baud */
#define B4800           0xC000  /* 4800 baud */
#define B9600           0xD000  /* 9600 baud */
#define B19200          0xE000  /* 19200 baud */
#define B38400          0xF000  /* 38400 baud */

/* Optional actions for tcsetattr().  POSIX Sec. 7.2.1.2. */
#define TCSANOW            1    /* changes take effect immediately */
#define TCSADRAIN          2    /* changes take effect after output is done */
#define TCSAFLUSH          3    /* wait for output to finish and flush input */

/* Queue_selector values for tcflush().  POSIX Sec. 7.2.2.2. */
#define TCIFLUSH           1    /* flush accumulated input data */
#define TCOFLUSH           2    /* flush accumulated output data */
#define TCIOFLUSH          3    /* flush accumulated input and output data */

/* Action values for tcflow().  POSIX Sec. 7.2.2.2. */
#define TCOOFF             1    /* suspend output */
#define TCOON              2    /* restart suspended output */
#define TCIOFF             3    /* transmit a STOP character on the line */
#define TCION              4    /* transmit a START character on the line */

/* Function Prototypes. */
#ifndef _ANSI_H
#include <ansi.h>
#endif

_PROTOTYPE( int tcsendbreak, (int _fildes, int _duration)                    );
_PROTOTYPE( int tcdrain, (int _filedes)                                      );
_PROTOTYPE( int tcflush, (int _filedes, int _queue_selector)                 );
_PROTOTYPE( int tcflow, (int _filedes, int _action)                          );
_PROTOTYPE( speed_t cfgetispeed, (const struct termios *_termios_p)          );
_PROTOTYPE( speed_t cfgetospeed, (const struct termios *_termios_p)          );
_PROTOTYPE( int cfsetispeed, (struct termios *_termios_p, speed_t _speed)    );
_PROTOTYPE( int cfsetospeed, (struct termios *_termios_p, speed_t _speed)    );
_PROTOTYPE( int tcgetattr, (int _filedes, struct termios *_termios_p)        );
_PROTOTYPE( int tcsetattr, \
        (int _filedes, int _opt_actions, const struct termios *_termios_p)   );

#define cfgetispeed(termios_p)          ((termios_p)->c_ispeed)
#define cfgetospeed(termios_p)          ((termios_p)->c_ospeed)
#define cfsetispeed(termios_p, speed)   ((termios_p)->c_ispeed = (speed), 0)
#define cfsetospeed(termios_p, speed)   ((termios_p)->c_ospeed = (speed), 0)

#ifdef _MINIX
/* Here are the local extensions to the POSIX standard for Minix. Posix
 * conforming programs are not able to access these, and therefore they are
 * only defined when a Minix program is compiled.
 */

/* Extensions to the termios c_iflag bit map.  */
#define IXANY           0x0800  /* allow any key to continue ouptut */

/* Extensions to the termios c_oflag bit map. They are only active iff
 * OPOST is enabled. */
#define ONLCR           0x0002  /* Map NL to CR-NL on output */
#define XTABS           0x0004  /* Expand tabs to spaces */
#define ONOEOT          0x0008  /* discard EOT's (^D) on output) */

/* Extensions to the termios c_lflag bit map.  */
#define LFLUSHO         0x0200  /* Flush output. */

/* Extensions to the c_cc array. */
#define VREPRINT          11    /* cc_c[VREPRINT] (^R) */
#define VLNEXT            12    /* cc_c[VLNEXT] (^V) */
#define VDISCARD          13    /* cc_c[VDISCARD] (^O) */

/* Extensions to baud rate settings. */
#define B57600          0x0100  /* 57600 baud */
#define B115200         0x0200  /* 115200 baud */

/* These are the default settings used by the kernel and by 'stty sane' */

#define TCTRL_DEF       (CREAD | CS8 | HUPCL)
#define TINPUT_DEF      (BRKINT | ICRNL | IXON | IXANY)
#define TOUTPUT_DEF     (OPOST | ONLCR)
#define TLOCAL_DEF      (ISIG | IEXTEN | ICANON | ECHO | ECHOE)
#define TSPEED_DEF      B9600

#define TEOF_DEF        '\4'    /* ^D */
#define TEOL_DEF        _POSIX_VDISABLE
#define TERASE_DEF      '\10'   /* ^H */
#define TINTR_DEF       '\3'    /* ^C */
#define TKILL_DEF       '\25'   /* ^U */
#define TMIN_DEF        1
#define TQUIT_DEF       '\34'   /* ^\ */
#define TSTART_DEF      '\21'   /* ^Q */
#define TSTOP_DEF       '\23'   /* ^S */
#define TSUSP_DEF       '\32'   /* ^Z */
#define TTIME_DEF       0
#define TREPRINT_DEF    '\22'   /* ^R */
#define TLNEXT_DEF      '\26'   /* ^V */
#define TDISCARD_DEF    '\17'   /* ^O */

/* Window size. This information is stored in the TTY driver but not used.
 * This can be used for screen based applications in a window environment. 
 * The ioctls TIOCGWINSZ and TIOCSWINSZ can be used to get and set this 
 * information.
 */

struct winsize
{
        unsigned short  ws_row;         /* rows, in characters */
        unsigned short  ws_col;         /* columns, in characters */
        unsigned short  ws_xpixel;      /* horizontal size, pixels */
        unsigned short  ws_ypixel;      /* vertical size, pixels */
};
#endif /* _MINIX */

#endif /* _TERMIOS_H */

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