misc/sys/ioctl.h

   1 /* Copyright (C) 1991, 92, 93, 94, 96, 98, 99 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, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 #ifndef _SYS_IOCTL_H
  20 #define _SYS_IOCTL_H    1
  21
  22 #include <features.h>
  23
  24 __BEGIN_DECLS
  25
  26 /* Get the list of `ioctl' requests and related constants.  */
  27 #include <bits/ioctls.h>
  28
  29 /* Define some types used by `ioctl' requests.  */
  30 #include <bits/ioctl-types.h>
  31
  32 /* On a Unix system, the system <sys/ioctl.h> probably defines some of
  33    the symbols we define in <sys/ttydefaults.h> (usually with the same
  34    values).  The code to generate <bits/ioctls.h> has omitted these
  35    symbols to avoid the conflict, but a Unix program expects <sys/ioctl.h>
  36    to define them, so we must include <sys/ttydefaults.h> here.  */
  37 #include <sys/ttydefaults.h>
  38
  39 /* Perform the I/O control operation specified by REQUEST on FD.
  40    One argument may follow; its presence and type depend on REQUEST.
  41    Return value depends on REQUEST.  Usually -1 indicates error.  */
  42 extern int ioctl (int __fd, unsigned long int __request, ...) __THROW;
  43
  44 __END_DECLS
  45
  46 #endif /* sys/ioctl.h */