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glibc  2.9
ioctl.h
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00001 /* Copyright (C) 1991, 92, 93, 94, 96, 98, 99 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003 
00004    The GNU C Library is free software; you can redistribute it and/or
00005    modify it under the terms of the GNU Lesser General Public
00006    License as published by the Free Software Foundation; either
00007    version 2.1 of the License, or (at your option) any later version.
00008 
00009    The GNU C Library is distributed in the hope that it will be useful,
00010    but WITHOUT ANY WARRANTY; without even the implied warranty of
00011    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012    Lesser General Public License for more details.
00013 
00014    You should have received a copy of the GNU Lesser General Public
00015    License along with the GNU C Library; if not, write to the Free
00016    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00017    02111-1307 USA.  */
00018 
00019 #ifndef       _SYS_IOCTL_H
00020 #define       _SYS_IOCTL_H  1
00021 
00022 #include <features.h>
00023 
00024 __BEGIN_DECLS
00025 
00026 /* Get the list of `ioctl' requests and related constants.  */
00027 #include <bits/ioctls.h>
00028 
00029 /* Define some types used by `ioctl' requests.  */
00030 #include <bits/ioctl-types.h>
00031 
00032 /* On a Unix system, the system <sys/ioctl.h> probably defines some of
00033    the symbols we define in <sys/ttydefaults.h> (usually with the same
00034    values).  The code to generate <bits/ioctls.h> has omitted these
00035    symbols to avoid the conflict, but a Unix program expects <sys/ioctl.h>
00036    to define them, so we must include <sys/ttydefaults.h> here.  */
00037 #include <sys/ttydefaults.h>
00038 
00039 /* Perform the I/O control operation specified by REQUEST on FD.
00040    One argument may follow; its presence and type depend on REQUEST.
00041    Return value depends on REQUEST.  Usually -1 indicates error.  */
00042 extern int ioctl (int __fd, unsigned long int __request, ...) __THROW;
00043 
00044 __END_DECLS
00045 
00046 #endif /* sys/ioctl.h */