termios.h

它通过提供glibc兼容使得应用程序移植到较小的c 库时相当得容易. 它能够应用到带虚拟存储的Linux和uClinux上.在大多数带MMU部件的平台上为使它更加紧凑,它也能够编译成共享库.uClib

/* termios type and macro definitions.  Linux/MIPS version.
   Copyright (C) 1993, 94, 95, 96, 97, 99 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#ifndef _TERMIOS_H
# error "Never include <bits/termios.h> directly; use <termios.h> instead."
#endif

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

#define NCCS 32
struct termios
  {
    tcflag_t c_iflag;		/* input mode flags */
    tcflag_t c_oflag;		/* output mode flags */
    tcflag_t c_cflag;		/* control mode flags */
    tcflag_t c_lflag;		/* local mode flags */
    cc_t c_line;		/* line discipline */
    cc_t c_cc[NCCS];		/* control characters */
  };

/* c_cc characters */
#define VINTR		0	/* Interrupt character [ISIG].  */
#define VQUIT		1	/* Quit character [ISIG].  */
#define VERASE		2	/* Erase character [ICANON].  */
#define VKILL		3	/* Kill-line character [ICANON].  */
#define VMIN		4	/* Minimum number of bytes read at once [!ICANON].  */
#define VTIME		5	/* Time-out value (tenths of a second) [!ICANON].  */
#define VEOL2		6	/* Second EOL character [ICANON].  */
#define VSWTC		7
#define VSWTCH		VSWTC
#define VSTART		8	/* Start (X-ON) character [IXON, IXOFF].  */
#define VSTOP		9	/* Stop (X-OFF) character [IXON, IXOFF].  */
#define VSUSP		10	/* Suspend character [ISIG].  */
				/* VDSUSP is not supported on Linux. */
/* #define VDSUSP	11	/ * Delayed suspend character [ISIG].  */
#define VREPRINT	12	/* Reprint-line character [ICANON].  */
#define VDISCARD	13	/* Discard character [IEXTEN].  */
#define VWERASE		14	/* Word-erase character [ICANON].  */
#define VLNEXT		15	/* Literal-next character [IEXTEN].  */
#define VEOF		16	/* End-of-file character [ICANON].  */
#define VEOL		17	/* End-of-line character [ICANON].  */

/* c_iflag bits */
#define IGNBRK	0000001		/* Ignore break condition.  */
#define BRKINT	0000002		/* Signal interrupt on break.  */
#define IGNPAR	0000004		/* Ignore characters with parity errors.  */
#define PARMRK	0000010		/* Mark parity and framing errors.  */
#define INPCK	0000020		/* Enable input parity check.  */
#define ISTRIP	0000040		/* Strip 8th bit off characters.  */
#define INLCR	0000100		/* Map NL to CR on input.  */
#define IGNCR	0000200		/* Ignore CR.  */
#define ICRNL	0000400		/* Map CR to NL on input.  */
#define IUCLC	0001000		/* Map upper case to lower case on input.  */
#define IXON	0002000		/* Enable start/stop output control.  */
#define IXANY	0004000		/* Any character will restart after stop.  */
#define IXOFF	0010000		/* Enable start/stop input control.  */
#define IMAXBEL 0020000		/* Ring bell when input queue is full.  */

/* c_oflag bits */
#define OPOST	0000001		/* Perform output processing.  */
#define OLCUC	0000002		/* Map lower case to upper case on output.  */
#define ONLCR	0000004		/* Map NL to CR-NL on output.  */
#define OCRNL	0000010
#define ONOCR	0000020
#define ONLRET	0000040
#define OFILL	0000100
#define OFDEL	0000200
#if defined __USE_MISC || defined __USE_XOPEN
# define NLDLY	0000400
# define   NL0	0000000
# define   NL1	0000400
# define CRDLY	0003000
# define   CR0	0000000
# define   CR1	0001000
# define   CR2	0002000
# define   CR3	0003000
# define TABDLY	0014000
# define   TAB0	0000000
# define   TAB1	0004000
# define   TAB2	0010000
# define   TAB3	0014000
# define BSDLY	0020000
# define   BS0	0000000
# define   BS1	0020000
# define FFDLY	0100000
# define   FF0	0000000
# define   FF1	0100000
#endif

#define VTDLY	0040000
#define   VT0	0000000
#define   VT1	0040000

#ifdef __USE_MISC
# define XTABS  0014000
#endif

/* c_cflag bit meaning */
#ifdef __USE_MISC
# define CBAUD	0010017
#endif
#define  B0	0000000		/* hang up */
#define  B50	0000001
#define  B75	0000002
#define  B110	0000003
#define  B134	0000004
#define  B150	0000005
#define  B200	0000006
#define  B300	0000007
#define  B600	0000010
#define  B1200	0000011
#define  B1800	0000012
#define  B2400	0000013
#define  B4800	0000014
#define  B9600	0000015
#define  B19200	0000016
#define  B38400	0000017
#ifdef __USE_MISC
# define EXTA B19200
# define EXTB B38400
#endif
#define CSIZE	0000060		/* Number of bits per byte (mask).  */
#define   CS5	0000000		/* 5 bits per byte.  */
#define   CS6	0000020		/* 6 bits per byte.  */
#define   CS7	0000040		/* 7 bits per byte.  */
#define   CS8	0000060		/* 8 bits per byte.  */
#define CSTOPB	0000100		/* Two stop bits instead of one.  */
#define CREAD	0000200		/* Enable receiver.  */
#define PARENB	0000400		/* Parity enable.  */
#define PARODD	0001000		/* Odd parity instead of even.  */
#define HUPCL	0002000		/* Hang up on last close.  */
#define CLOCAL	0004000		/* Ignore modem status lines.  */
#ifdef __USE_MISC
# define CBAUDEX   0010000
#endif
#define  B57600   0010001
#define  B115200  0010002
#define  B230400  0010003
#define  B460800  0010004
#define  B500000  0010005
#define  B576000  0010006
#define  B921600  0010007
#define  B1000000 0010010
#define  B1152000 0010011
#define  B1500000 0010012
#define  B2000000 0010013
#define  B2500000 0010014
#define  B3000000 0010015
#define  B3500000 0010016
#define  B4000000 0010017
#define __MAX_BAUD B4000000
#ifdef __USE_MISC
# define CIBAUD	  002003600000	/* input baud rate (not used) */
# define CRTSCTS  020000000000		/* flow control */
#endif

/* c_lflag bits */
#define ISIG	0000001		/* Enable signals.  */
#define ICANON	0000002		/* Do erase and kill processing.  */
#if defined __USE_MISC || defined __USE_XOPEN
# define XCASE	0000004
#endif
#define ECHO	0000010		/* Enable echo.  */
#define ECHOE	0000020		/* Visual erase for ERASE.  */
#define ECHOK	0000040		/* Echo NL after KILL.  */
#define ECHONL	0000100		/* Echo NL even if ECHO is off.  */
#define NOFLSH	0000200		/* Disable flush after interrupt.  */
#define IEXTEN	0000400		/* Enable DISCARD and LNEXT.  */
#ifdef __USE_MISC
# define ECHOCTL 0001000	/* Echo control characters as ^X.  */
# define ECHOPRT 0002000	/* Hardcopy visual erase.  */
# define ECHOKE	 0004000	/* Visual erase for KILL.  */
# define FLUSHO	0020000
# define PENDIN	0040000		/* Retype pending input (state).  */
#endif
#define TOSTOP	0100000		/* Send SIGTTOU for background output.  */
#define ITOSTOP	TOSTOP

/* ioctl (fd, TIOCSERGETLSR, &result) where result may be as below */
#define TIOCSER_TEMT    0x01	/* Transmitter physically empty */

/* tcflow() and TCXONC use these */
#define	TCOOFF		0	/* Suspend output.  */
#define	TCOON		1	/* Restart suspended output.  */
#define	TCIOFF		2	/* Send a STOP character.  */
#define	TCION		3	/* Send a START character.  */

/* tcflush() and TCFLSH use these */
#define	TCIFLUSH	0	/* Discard data received but not yet read.  */
#define	TCOFLUSH	1	/* Discard data written but not yet sent.  */
#define	TCIOFLUSH	2	/* Discard all pending data.  */

/* tcsetattr uses these */
#define	TCSANOW		0x540e	/* Same as TCSETS; change immediately.  */
#define	TCSADRAIN	0x540f	/* Same as TCSETSW; change when pending output is written.  */
#define	TCSAFLUSH	0x5410	/* Same as TCSETSF; flush pending input before changing.  */

#define _IOT_termios /* Hurd ioctl type field.  */ \
  _IOT (_IOTS (cflag_t), 4, _IOTS (cc_t), NCCS, _IOTS (speed_t), 2)