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Current File : //usr/include/sys/ioctl.h
/* 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/>.  */

#ifndef	_SYS_IOCTL_H
#define	_SYS_IOCTL_H	1

#include <features.h>

__BEGIN_DECLS

/* Get the list of `ioctl' requests and related constants.  */
#include <bits/ioctls.h>

/* Define some types used by `ioctl' requests.  */
#include <bits/ioctl-types.h>

/* On a Unix system, the system <sys/ioctl.h> probably defines some of
   the symbols we define in <sys/ttydefaults.h> (usually with the same
   values).  The code to generate <bits/ioctls.h> has omitted these
   symbols to avoid the conflict, but a Unix program expects <sys/ioctl.h>
   to define them, so we must include <sys/ttydefaults.h> here.  */
#include <sys/ttydefaults.h>

/* Perform the I/O control operation specified by REQUEST on FD.
   One argument may follow; its presence and type depend on REQUEST.
   Return value depends on REQUEST.  Usually -1 indicates error.  */
extern int ioctl (int __fd, unsigned long int __request, ...) __THROW;

__END_DECLS

#endif /* sys/ioctl.h */