/* Copyright (C) 1991-1994,1996-1999,2003,2010 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. */

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

#ifndef _TERMIOS_H
#define _TERMIOS_H 1

#include <features.h>
#if defined __USE_UNIX98 || 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_BSD
/* 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_BSD
/* 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_BSD
/* 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;


#ifdef __USE_UNIX98
/* Get process group ID for session leader for controlling terminal FD. */
extern __pid_t tcgetsid (int __fd) __THROW;
#endif


#ifdef __USE_BSD
# include <sys/ttydefaults.h>
#endif

__END_DECLS

#endif /* termios.h */