Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit af4cd3fe authored by Brian Gerst's avatar Brian Gerst Committed by Linus Torvalds
Browse files

[PATCH] Generic ioctl.h 



Most arches copied the i386 ioctl.h.  Combine them into a generic header.

Signed-off-by: default avatarBrian Gerst <bgerst@didntduck.org>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 7ff92053

include/asm-arm/ioctl.h

+1 −74
Original line number Diff line number Diff line 
/*

 * linux/ioctl.h for Linux by H.H. Bergman.

 */



#ifndef _ASMARM_IOCTL_H

#define _ASMARM_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

 * is useful for catching programs compiled with old versions

 * and to avoid overwriting user space outside the user buffer area.

 * 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 /* _ASMARM_IOCTL_H */
 
#include <asm-generic/ioctl.h>

include/asm-arm26/ioctl.h

+1 −74
Original line number Diff line number Diff line 
/*

 * linux/ioctl.h for Linux by H.H. Bergman.

 */



#ifndef _ASMARM_IOCTL_H

#define _ASMARM_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

 * is useful for catching programs compiled with old versions

 * and to avoid overwriting user space outside the user buffer area.

 * 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 /* _ASMARM_IOCTL_H */
 
#include <asm-generic/ioctl.h>

include/asm-cris/ioctl.h

+1 −83
Original line number Diff line number Diff line 
/*

 * linux/ioctl.h for Linux by H.H. Bergman.

 *

 * This is the same as the i386 version.

 */



#ifndef _ASMCRIS_IOCTL_H

#define _ASMCRIS_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

 * is useful for catching programs compiled with old versions

 * and to avoid overwriting user space outside the user buffer area.

 * 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))



/* provoke compile error for invalid uses of size argument */

extern int __invalid_size_argument_for_IOC;

#define _IOC_TYPECHECK(t) \

	((sizeof(t) == sizeof(t[1]) && \

	  sizeof(t) < (1 << _IOC_SIZEBITS)) ? \

	  sizeof(t) : __invalid_size_argument_for_IOC)



/* used to create numbers */

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

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

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

#define _IOWR(type,nr,size)	_IOC(_IOC_READ|_IOC_WRITE,(type),(nr),(_IOC_TYPECHECK(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 /* _ASMCRIS_IOCTL_H */
 
#include <asm-generic/ioctl.h>

include/asm-frv/ioctl.h

+1 −80
Original line number Diff line number Diff line 
/*

 * linux/ioctl.h for Linux by H.H. Bergman.

 */



#ifndef _ASM_IOCTL_H

#define _ASM_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

 * is useful for catching programs compiled with old versions

 * and to avoid overwriting user space outside the user buffer area.

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

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

 */



/*

 * I don't really have any idea about what this should look like, so

 * for the time being, this is heavily based on the PC definitions.

 */



/*

 * 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 /* _ASM_IOCTL_H */

#include <asm-generic/ioctl.h>

include/asm-generic/ioctl.h

0 → 100644
+80 −0
Original line number Diff line number Diff line 
#ifndef _ASM_GENERIC_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

 * is useful for catching programs compiled with old versions

 * and to avoid overwriting user space outside the user buffer area.

 * 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 generic 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))



/* provoke compile error for invalid uses of size argument */

extern unsigned int __invalid_size_argument_for_IOC;

#define _IOC_TYPECHECK(t) \

	((sizeof(t) == sizeof(t[1]) && \

	  sizeof(t) < (1 << _IOC_SIZEBITS)) ? \

	  sizeof(t) : __invalid_size_argument_for_IOC)



/* used to create numbers */

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

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

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

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

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

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

#define _IOWR_BAD(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 /* _ASM_GENERIC_IOCTL_H */