/* Copyright (C) 1991-2018 Free Software Foundation, Inc.

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This file is part of the GNU C Library.

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The GNU C Library is free software; you can redistribute it and/or

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modify it under the terms of the GNU Lesser General Public

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License as published by the Free Software Foundation; either

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version 2.1 of the License, or (at your option) any later version.

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The GNU C Library is distributed in the hope that it will be useful,

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but WITHOUT ANY WARRANTY; without even the implied warranty of

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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

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Lesser General Public License for more details.

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You should have received a copy of the GNU Lesser General Public

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License along with the GNU C Library; if not, see

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<http://www.gnu.org/licenses/>. */

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/*

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* POSIX Standard: 7.1-2 General Terminal Interface <termios.h>

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*/

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#ifndef _TERMIOS_H

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#define _TERMIOS_H 1

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#include <features.h>

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#if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8

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/* We need `pid_t'. */

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# include <bits/types.h>

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# ifndef __pid_t_defined

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typedef __pid_t pid_t;

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# define __pid_t_defined

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# endif

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#endif

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__BEGIN_DECLS

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/* Get the system-dependent definitions of `struct termios', `tcflag_t',

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`cc_t', `speed_t', and all the macros specifying the flag bits. */

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#include <bits/termios.h>

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#ifdef __USE_MISC

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/* Compare a character C to a value VAL from the `c_cc' array in a

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`struct termios'. If VAL is _POSIX_VDISABLE, no character can match it. */

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# define CCEQ(val, c) ((c) == (val) && (val) != _POSIX_VDISABLE)

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#endif

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/* Return the output baud rate stored in *TERMIOS_P. */

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extern speed_t cfgetospeed (const struct termios *__termios_p) __THROW;

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/* Return the input baud rate stored in *TERMIOS_P. */

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extern speed_t cfgetispeed (const struct termios *__termios_p) __THROW;

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/* Set the output baud rate stored in *TERMIOS_P to SPEED. */

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extern int cfsetospeed (struct termios *__termios_p, speed_t __speed) __THROW;

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/* Set the input baud rate stored in *TERMIOS_P to SPEED. */

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extern int cfsetispeed (struct termios *__termios_p, speed_t __speed) __THROW;

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#ifdef __USE_MISC

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/* Set both the input and output baud rates in *TERMIOS_OP to SPEED. */

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extern int cfsetspeed (struct termios *__termios_p, speed_t __speed) __THROW;

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#endif

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/* Put the state of FD into *TERMIOS_P. */

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extern int tcgetattr (int __fd, struct termios *__termios_p) __THROW;

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/* Set the state of FD to *TERMIOS_P.

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Values for OPTIONAL_ACTIONS (TCSA*) are in <bits/termios.h>. */

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extern int tcsetattr (int __fd, int __optional_actions,

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const struct termios *__termios_p) __THROW;

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#ifdef __USE_MISC

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/* Set *TERMIOS_P to indicate raw mode. */

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extern void cfmakeraw (struct termios *__termios_p) __THROW;

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#endif

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/* Send zero bits on FD. */

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extern int tcsendbreak (int __fd, int __duration) __THROW;

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/* Wait for pending output to be written on FD.

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This function is a cancellation point and therefore not marked with

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__THROW. */

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extern int tcdrain (int __fd);

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/* Flush pending data on FD.

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Values for QUEUE_SELECTOR (TC{I,O,IO}FLUSH) are in <bits/termios.h>. */

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extern int tcflush (int __fd, int __queue_selector) __THROW;

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/* Suspend or restart transmission on FD.

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Values for ACTION (TC[IO]{OFF,ON}) are in <bits/termios.h>. */

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extern int tcflow (int __fd, int __action) __THROW;

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#if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8

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/* Get process group ID for session leader for controlling terminal FD. */

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extern __pid_t tcgetsid (int __fd) __THROW;

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#endif

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#ifdef __USE_MISC

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# include <sys/ttydefaults.h>

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#endif

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__END_DECLS

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#endif /* termios.h */

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