misc/sys/ioctl.h

   1 /* Copyright (C) 1991-2014 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.  */
  41 extern int ioctl (int __fd, unsigned long int __request, ...) __THROW;
  42
  43 __END_DECLS
  44
  45 #endif /* sys/ioctl.h */