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Macros
ioctl.h File Reference

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Macros

#define _IOC_NRBITS   8
 
#define _IOC_TYPEBITS   8
 
#define _IOC_SIZEBITS   13
 
#define _IOC_DIRBITS   3
 
#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)
 
#define _IOC_NONE   1U
 
#define _IOC_READ   2U
 
#define _IOC_WRITE   4U
 
#define _IOC(dir, type, nr, size)
 
#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))
 
#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)
 
#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)
 

Macro Definition Documentation

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

Definition at line 47 of file ioctl.h.

#define _IOC (   dir,
  type,
  nr,
  size 
)
Value:
((unsigned int) \
(((dir) << _IOC_DIRSHIFT) | \
((type) << _IOC_TYPESHIFT) | \
((nr) << _IOC_NRSHIFT) | \

Definition at line 39 of file ioctl.h.

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

Definition at line 53 of file ioctl.h.

#define _IOC_DIRBITS   3

Definition at line 18 of file ioctl.h.

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

Definition at line 23 of file ioctl.h.

#define _IOC_DIRSHIFT   (_IOC_SIZESHIFT+_IOC_SIZEBITS)

Definition at line 28 of file ioctl.h.

#define _IOC_NONE   1U

Definition at line 35 of file ioctl.h.

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

Definition at line 55 of file ioctl.h.

#define _IOC_NRBITS   8

Definition at line 15 of file ioctl.h.

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

Definition at line 20 of file ioctl.h.

#define _IOC_NRSHIFT   0

Definition at line 25 of file ioctl.h.

#define _IOC_READ   2U

Definition at line 36 of file ioctl.h.

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

Definition at line 56 of file ioctl.h.

#define _IOC_SIZEBITS   13

Definition at line 17 of file ioctl.h.

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

Definition at line 22 of file ioctl.h.

#define _IOC_SIZESHIFT   (_IOC_TYPESHIFT+_IOC_TYPEBITS)

Definition at line 27 of file ioctl.h.

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

Definition at line 54 of file ioctl.h.

#define _IOC_TYPEBITS   8

Definition at line 16 of file ioctl.h.

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

Definition at line 21 of file ioctl.h.

#define _IOC_TYPESHIFT   (_IOC_NRSHIFT+_IOC_NRBITS)

Definition at line 26 of file ioctl.h.

#define _IOC_WRITE   4U

Definition at line 37 of file ioctl.h.

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

Definition at line 48 of file ioctl.h.

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

Definition at line 49 of file ioctl.h.

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

Definition at line 50 of file ioctl.h.

#define IOC_IN   (_IOC_WRITE << _IOC_DIRSHIFT)

Definition at line 60 of file ioctl.h.

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

Definition at line 62 of file ioctl.h.

#define IOC_OUT   (_IOC_READ << _IOC_DIRSHIFT)

Definition at line 61 of file ioctl.h.

#define IOCSIZE_MASK   (_IOC_SIZEMASK << _IOC_SIZESHIFT)

Definition at line 63 of file ioctl.h.

#define IOCSIZE_SHIFT   (_IOC_SIZESHIFT)

Definition at line 64 of file ioctl.h.