一、文件位置
/usr/include/sys/_termios.h
二、文件内容
/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 1988, 1989, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)termios.h 8.3 (Berkeley) 3/28/94
* $FreeBSD: releng/12.0/sys/sys/_termios.h 326023 2017-11-20 19:43:44Z pfg $
*/
#ifndef _SYS__TERMIOS_H_
#define _SYS__TERMIOS_H_
/*
* Special Control Characters
*
* Index into c_cc[] character array.
*
* Name Subscript Enabled by
*/
#define VEOF 0 /* ICANON */
#define VEOL 1 /* ICANON */
#if __BSD_VISIBLE
#define VEOL2 2 /* ICANON together with IEXTEN */
#endif
#define VERASE 3 /* ICANON */
#if __BSD_VISIBLE
#define VWERASE 4 /* ICANON together with IEXTEN */
#endif
#define VKILL 5 /* ICANON */
#if __BSD_VISIBLE
#define VREPRINT 6 /* ICANON together with IEXTEN */
#define VERASE2 7 /* ICANON */
#endif
/* 7 ex-spare 1 */
#define VINTR 8 /* ISIG */
#define VQUIT 9 /* ISIG */
#define VSUSP 10 /* ISIG */
#if __BSD_VISIBLE
#define VDSUSP 11 /* ISIG together with IEXTEN */
#endif
#define VSTART 12 /* IXON, IXOFF */
#define VSTOP 13 /* IXON, IXOFF */
#if __BSD_VISIBLE
#define VLNEXT 14 /* IEXTEN */
#define VDISCARD 15 /* IEXTEN */
#endif
#define VMIN 16 /* !ICANON */
#define VTIME 17 /* !ICANON */
#if __BSD_VISIBLE
#define VSTATUS 18 /* ICANON together with IEXTEN */
/* 19 spare 2 */
#endif
#define NCCS 20
#define _POSIX_VDISABLE 0xff
/*
* Input flags - software input processing
*/
#define IGNBRK 0x00000001 /* ignore BREAK condition */
#define BRKINT 0x00000002 /* map BREAK to SIGINTR */
#define IGNPAR 0x00000004 /* ignore (discard) parity errors */
#define PARMRK 0x00000008 /* mark parity and framing errors */
#define INPCK 0x00000010 /* enable checking of parity errors */
#define ISTRIP 0x00000020 /* strip 8th bit off chars */
#define INLCR 0x00000040 /* map NL into CR */
#define IGNCR 0x00000080 /* ignore CR */
#define ICRNL 0x00000100 /* map CR to NL (ala CRMOD) */
#define IXON 0x00000200 /* enable output flow control */
#define IXOFF 0x00000400 /* enable input flow control */
#if __XSI_VISIBLE || __POSIX_VISIBLE >= 200809
#define IXANY 0x00000800 /* any char will restart after stop */
#endif
#if __BSD_VISIBLE
#define IMAXBEL 0x00002000 /* ring bell on input queue full */
#endif
/*
* Output flags - software output processing
*/
#define OPOST 0x00000001 /* enable following output processing */
#if __XSI_VISIBLE
#define ONLCR 0x00000002 /* map NL to CR-NL (ala CRMOD) */
#endif
#if __BSD_VISIBLE
#define TABDLY 0x00000004 /* tab delay mask */
#define TAB0 0x00000000 /* no tab delay and expansion */
#define TAB3 0x00000004 /* expand tabs to spaces */
#define ONOEOT 0x00000008 /* discard EOT's (^D) on output) */
#endif
#if __XSI_VISIBLE
#define OCRNL 0x00000010 /* map CR to NL on output */
#define ONOCR 0x00000020 /* no CR output at column 0 */
#define ONLRET 0x00000040 /* NL performs CR function */
#endif
/*
* Control flags - hardware control of terminal
*/
#if __BSD_VISIBLE
#define CIGNORE 0x00000001 /* ignore control flags */
#endif
#define CSIZE 0x00000300 /* character size mask */
#define CS5 0x00000000 /* 5 bits (pseudo) */
#define CS6 0x00000100 /* 6 bits */
#define CS7 0x00000200 /* 7 bits */
#define CS8 0x00000300 /* 8 bits */
#define CSTOPB 0x00000400 /* send 2 stop bits */
#define CREAD 0x00000800 /* enable receiver */
#define PARENB 0x00001000 /* parity enable */
#define PARODD 0x00002000 /* odd parity, else even */
#define HUPCL 0x00004000 /* hang up on last close */
#define CLOCAL 0x00008000 /* ignore modem status lines */
#if __BSD_VISIBLE
#define CCTS_OFLOW 0x00010000 /* CTS flow control of output */
#define CRTSCTS (CCTS_OFLOW | CRTS_IFLOW)
#define CRTS_IFLOW 0x00020000 /* RTS flow control of input */
#define CDTR_IFLOW 0x00040000 /* DTR flow control of input */
#define CDSR_OFLOW 0x00080000 /* DSR flow control of output */
#define CCAR_OFLOW 0x00100000 /* DCD flow control of output */
#endif
/*
* "Local" flags - dumping ground for other state
*
* Warning: some flags in this structure begin with
* the letter "I" and look like they belong in the
* input flag.
*/
#if __BSD_VISIBLE
#define ECHOKE 0x00000001 /* visual erase for line kill */
#endif
#define ECHOE 0x00000002 /* visually erase chars */
#define ECHOK 0x00000004 /* echo NL after line kill */
#define ECHO 0x00000008 /* enable echoing */
#define ECHONL 0x00000010 /* echo NL even if ECHO is off */
#if __BSD_VISIBLE
#define ECHOPRT 0x00000020 /* visual erase mode for hardcopy */
#define ECHOCTL 0x00000040 /* echo control chars as ^(Char) */
#endif
#define ISIG 0x00000080 /* enable signals INTR, QUIT, [D]SUSP */
#define ICANON 0x00000100 /* canonicalize input lines */
#if __BSD_VISIBLE
#define ALTWERASE 0x00000200 /* use alternate WERASE algorithm */
#endif
#define IEXTEN 0x00000400 /* enable DISCARD and LNEXT */
#define EXTPROC 0x00000800 /* external processing */
#define TOSTOP 0x00400000 /* stop background jobs from output */
#if __BSD_VISIBLE
#define FLUSHO 0x00800000 /* output being flushed (state) */
#define NOKERNINFO 0x02000000 /* no kernel output from VSTATUS */
#define PENDIN 0x20000000 /* XXX retype pending input (state) */
#endif
#define NOFLSH 0x80000000 /* don't flush after interrupt */
/*
* Standard speeds
*/
#define B0 0
#define B50 50
#define B75 75
#define B110 110
#define B134 134
#define B150 150
#define B200 200
#define B300 300
#define B600 600
#define B1200 1200
#define B1800 1800
#define B2400 2400
#define B4800 4800
#define B9600 9600
#define B19200 19200
#define B38400 38400
#if __BSD_VISIBLE
#define B7200 7200
#define B14400 14400
#define B28800 28800
#define B57600 57600
#define B76800 76800
#define B115200 115200
#define B230400 230400
#define B460800 460800
#define B921600 921600
#define EXTA 19200
#define EXTB 38400
#endif
typedef unsigned int tcflag_t;
typedef unsigned char cc_t;
typedef unsigned int speed_t;
struct termios {
tcflag_t c_iflag; /* input flags */
tcflag_t c_oflag; /* output flags */
tcflag_t c_cflag; /* control flags */
tcflag_t c_lflag; /* local flags */
cc_t c_cc[NCCS]; /* control chars */
speed_t c_ispeed; /* input speed */
speed_t c_ospeed; /* output speed */
};
#endif /* !_SYS__TERMIOS_H_ */