1/*
2 * This header was generated from the Linux kernel headers by update_headers.py,
3 * to provide necessary information from kernel to userspace, such as constants,
4 * structures, and macros, and thus, contains no copyrightable information.
5 */
6#ifndef _UAPI_ASM_GENERIC_IOCTL_H
7#define _UAPI_ASM_GENERIC_IOCTL_H
8#define _IOC_NRBITS	8
9#define _IOC_TYPEBITS	8
10#ifndef _IOC_SIZEBITS
11# define _IOC_SIZEBITS	14
12#endif
13#ifndef _IOC_DIRBITS
14# define _IOC_DIRBITS	2
15#endif
16#define _IOC_NRMASK	((1 << _IOC_NRBITS)-1)
17#define _IOC_TYPEMASK	((1 << _IOC_TYPEBITS)-1)
18#define _IOC_SIZEMASK	((1 << _IOC_SIZEBITS)-1)
19#define _IOC_DIRMASK	((1 << _IOC_DIRBITS)-1)
20#define _IOC_NRSHIFT	0
21#define _IOC_TYPESHIFT	(_IOC_NRSHIFT+_IOC_NRBITS)
22#define _IOC_SIZESHIFT	(_IOC_TYPESHIFT+_IOC_TYPEBITS)
23#define _IOC_DIRSHIFT	(_IOC_SIZESHIFT+_IOC_SIZEBITS)
24#ifndef _IOC_NONE
25# define _IOC_NONE	0U
26#endif
27#ifndef _IOC_WRITE
28# define _IOC_WRITE	1U
29#endif
30#ifndef _IOC_READ
31# define _IOC_READ	2U
32#endif
33#define _IOC(dir,type,nr,size) \
34	(((dir)  << _IOC_DIRSHIFT) | \
35	 ((type) << _IOC_TYPESHIFT) | \
36	 ((nr)   << _IOC_NRSHIFT) | \
37	 ((size) << _IOC_SIZESHIFT))
38#ifndef __KERNEL__
39#define _IOC_TYPECHECK(t) (sizeof(t))
40#endif
41#define _IO(type,nr)		_IOC(_IOC_NONE,(type),(nr),0)
42#define _IOR(type,nr,size)	_IOC(_IOC_READ,(type),(nr),(_IOC_TYPECHECK(size)))
43#define _IOW(type,nr,size)	_IOC(_IOC_WRITE,(type),(nr),(_IOC_TYPECHECK(size)))
44#define _IOWR(type,nr,size)	_IOC(_IOC_READ|_IOC_WRITE,(type),(nr),(_IOC_TYPECHECK(size)))
45#define _IOR_BAD(type,nr,size)	_IOC(_IOC_READ,(type),(nr),sizeof(size))
46#define _IOW_BAD(type,nr,size)	_IOC(_IOC_WRITE,(type),(nr),sizeof(size))
47#define _IOWR_BAD(type,nr,size)	_IOC(_IOC_READ|_IOC_WRITE,(type),(nr),sizeof(size))
48#define _IOC_DIR(nr)		(((nr) >> _IOC_DIRSHIFT) & _IOC_DIRMASK)
49#define _IOC_TYPE(nr)		(((nr) >> _IOC_TYPESHIFT) & _IOC_TYPEMASK)
50#define _IOC_NR(nr)		(((nr) >> _IOC_NRSHIFT) & _IOC_NRMASK)
51#define _IOC_SIZE(nr)		(((nr) >> _IOC_SIZESHIFT) & _IOC_SIZEMASK)
52#define IOC_IN		(_IOC_WRITE << _IOC_DIRSHIFT)
53#define IOC_OUT		(_IOC_READ << _IOC_DIRSHIFT)
54#define IOC_INOUT	((_IOC_WRITE|_IOC_READ) << _IOC_DIRSHIFT)
55#define IOCSIZE_MASK	(_IOC_SIZEMASK << _IOC_SIZESHIFT)
56#define IOCSIZE_SHIFT	(_IOC_SIZESHIFT)
57#endif
58