staging/lustre: remove lustre/include/ioctl.h

/*

 * GPL HEADER START

 *

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 only,

 * as published by the Free Software Foundation.

 *

 * This program is distributed in the hope that it will be useful, but

 * WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * General Public License version 2 for more details (a copy is included

 * in the LICENSE file that accompanied this code).

 *

 * You should have received a copy of the GNU General Public License

 * version 2 along with this program; If not, see

 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf

 *

 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 *

 * GPL HEADER END

 */

/*

 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.

 * Use is subject to license terms.

 */

/*

 * This file is part of Lustre, http://www.lustre.org/

 * Lustre is a trademark of Sun Microsystems, Inc.

 */

#ifndef _IOWR

/* On i386 and x86_64, _ASM_I386_IOCTL_H is defined by the kernel's ioctl.h,

 * and on newer kernels this header is shared as _ASM_GENERIC_IOCTL_H.

 *

 * We can avoid any problems with the kernel header being included again by

 * defining _ASM_I386_IOCTL_H here so that a later occurrence of <asm/ioctl.h>

 * does not include the kernel's ioctl.h after this one. b=14746 */

#define _ASM_I386_IOCTL_H

#define _ASM_GENERIC_IOCTL_H

/* ioctl command encoding: 32 bits total, command in lower 16 bits,

 * size of the parameter structure in the lower 14 bits of the

 * upper 16 bits.

 * Encoding the size of the parameter structure in the ioctl request

 * The highest 2 bits are reserved for indicating the ``access mode''.

 * NOTE: This limits the max parameter size to 16kB -1 !

 */

/*

 * The following is for compatibility across the various Linux

 * platforms.  The i386 ioctl numbering scheme doesn't really enforce

 * a type field.  De facto, however, the top 8 bits of the lower 16

 * bits are indeed used as a type field, so we might just as well make

 * this explicit here.  Please be sure to use the decoding macros

 * below from now on.

 */

#define _IOC_NRBITS     8

#define _IOC_TYPEBITS   8

#define _IOC_SIZEBITS   14

#define _IOC_DIRBITS    2

#define _IOC_NRMASK     ((1 << _IOC_NRBITS)-1)

#define _IOC_TYPEMASK   ((1 << _IOC_TYPEBITS)-1)

#define _IOC_SIZEMASK   ((1 << _IOC_SIZEBITS)-1)

#define _IOC_DIRMASK    ((1 << _IOC_DIRBITS)-1)

#define _IOC_NRSHIFT    0

#define _IOC_TYPESHIFT  (_IOC_NRSHIFT+_IOC_NRBITS)

#define _IOC_SIZESHIFT  (_IOC_TYPESHIFT+_IOC_TYPEBITS)

#define _IOC_DIRSHIFT   (_IOC_SIZESHIFT+_IOC_SIZEBITS)

/*

 * Direction bits.

 */

#define _IOC_NONE       0U

#define _IOC_WRITE      1U

#define _IOC_READ       2U

#define _IOC(dir,type,nr,size) (((dir)  << _IOC_DIRSHIFT) | ((type) << _IOC_TYPESHIFT) | ((nr)   << _IOC_NRSHIFT) | ((size) << _IOC_SIZESHIFT))

/* used to create numbers */

#define _IO(type,nr)	    _IOC(_IOC_NONE,(type),(nr),0)

#define _IOR(type,nr,size)      _IOC(_IOC_READ,(type),(nr),sizeof(size))

#define _IOW(type,nr,size)      _IOC(_IOC_WRITE,(type),(nr),sizeof(size))

#define _IOWR(type,nr,size)     _IOC(_IOC_READ|_IOC_WRITE,(type),(nr),sizeof(size))

/* used to decode ioctl numbers.. */

#define _IOC_DIR(nr)	    (((nr) >> _IOC_DIRSHIFT) & _IOC_DIRMASK)

#define _IOC_TYPE(nr)	   (((nr) >> _IOC_TYPESHIFT) & _IOC_TYPEMASK)

#define _IOC_NR(nr)	     (((nr) >> _IOC_NRSHIFT) & _IOC_NRMASK)

#define _IOC_SIZE(nr)	   (((nr) >> _IOC_SIZESHIFT) & _IOC_SIZEMASK)

/* ...and for the drivers/sound files... */

#define IOC_IN	  (_IOC_WRITE << _IOC_DIRSHIFT)

#define IOC_OUT	 (_IOC_READ << _IOC_DIRSHIFT)

#define IOC_INOUT       ((_IOC_WRITE|_IOC_READ) << _IOC_DIRSHIFT)

#define IOCSIZE_MASK    (_IOC_SIZEMASK << _IOC_SIZESHIFT)

#define IOCSIZE_SHIFT   (_IOC_SIZESHIFT)

#endif /* _IOWR */