1/* Copyright (C) 1991-2018 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
17
18#ifndef _SYS_IOCTL_H
19#define _SYS_IOCTL_H 1
20
21#include <features.h>
22
23__BEGIN_DECLS
24
25/* Get the list of `ioctl' requests and related constants. */
26#include <bits/ioctls.h>
27
28/* Define some types used by `ioctl' requests. */
29#include <bits/ioctl-types.h>
30
31/* On a Unix system, the system <sys/ioctl.h> probably defines some of
32 the symbols we define in <sys/ttydefaults.h> (usually with the same
33 values). The code to generate <bits/ioctls.h> has omitted these
34 symbols to avoid the conflict, but a Unix program expects <sys/ioctl.h>
35 to define them, so we must include <sys/ttydefaults.h> here. */
36#include <sys/ttydefaults.h>
37
38/* Perform the I/O control operation specified by REQUEST on FD.
39 One argument may follow; its presence and type depend on REQUEST.
40 Return value depends on REQUEST. Usually -1 indicates error. */
41extern int ioctl (int __fd, unsigned long int __request, ...) __THROW;
42
43__END_DECLS
44
45#endif /* sys/ioctl.h */
46