/* Copyright (C) 1991-2018 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, see

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

/*

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

 */

#ifndef	_TERMIOS_H

#define	_TERMIOS_H	1

#include <features.h>

#if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8

/* We need `pid_t'.  */

# include <bits/types.h>

# ifndef __pid_t_defined

typedef __pid_t pid_t;

#  define __pid_t_defined

# endif

#endif

__BEGIN_DECLS

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

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

#include <bits/termios.h>

#ifdef __USE_MISC

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

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

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

#endif

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

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

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

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

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

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

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

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

#ifdef	__USE_MISC

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

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

#endif

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

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

/* Set the state of FD to *TERMIOS_P.

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

extern int tcsetattr (int __fd, int __optional_actions,

		      const struct termios *__termios_p) __THROW;

#ifdef	__USE_MISC

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

extern void cfmakeraw (struct termios *__termios_p) __THROW;

#endif

/* Send zero bits on FD.  */

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

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

   This function is a cancellation point and therefore not marked with

   __THROW.  */

extern int tcdrain (int __fd);

/* Flush pending data on FD.

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

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

/* Suspend or restart transmission on FD.

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

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

#if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8

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

extern __pid_t tcgetsid (int __fd) __THROW;

#endif

#ifdef __USE_MISC

# include <sys/ttydefaults.h>

#endif

__END_DECLS

#endif /* termios.h  */