1  /* Copyright (C) 1991-2023 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_TIME_BITS64
      42  extern int ioctl (int __fd, unsigned long int __request, ...) __THROW;
      43  #else
      44  # ifdef __REDIRECT
      45  extern int __REDIRECT_NTH (ioctl, (int __fd, unsigned long int __request, ...),
      46  			   __ioctl_time64);
      47  # else
      48  extern 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 */