1/* Copyright (C) 1991-2025 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   <https://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.  */
41#ifndef __USE_TIME64_REDIRECTS
42extern int ioctl (int __fd, unsigned long int __request, ...) __THROW;
43#else
44# ifdef __REDIRECT
45extern int __REDIRECT_NTH (ioctl, (int __fd, unsigned long int __request, ...),
46			   __ioctl_time64);
47# else
48extern int __ioctl_time64 (int __fd, unsigned long int __request, ...) __THROW;
49#  define ioctl __ioctl_time64
50# endif
51#endif
52
53__END_DECLS
54
55#endif /* sys/ioctl.h */