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      1 /****************************************************************************
      2  ****************************************************************************
      3  ***
      4  ***   This header was automatically generated from a Linux kernel header
      5  ***   of the same name, to make information necessary for userspace to
      6  ***   call into the kernel available to libc.  It contains only constants,
      7  ***   structures, and macros generated from the original header, and thus,
      8  ***   contains no copyrightable information.
      9  ***
     10  ***   To edit the content of this header, modify the corresponding
     11  ***   source file (e.g. under external/kernel-headers/original/) then
     12  ***   run bionic/libc/kernel/tools/update_all.py
     13  ***
     14  ***   Any manual change here will be lost the next time this script will
     15  ***   be run. You've been warned!
     16  ***
     17  ****************************************************************************
     18  ****************************************************************************/
     19 #ifndef _UAPI_ASM_GENERIC_IOCTL_H
     20 #define _UAPI_ASM_GENERIC_IOCTL_H
     21 #define _IOC_NRBITS 8
     22 #define _IOC_TYPEBITS 8
     23 #ifndef _IOC_SIZEBITS
     24 #define _IOC_SIZEBITS 14
     25 #endif
     26 #ifndef _IOC_DIRBITS
     27 #define _IOC_DIRBITS 2
     28 #endif
     29 #define _IOC_NRMASK ((1 << _IOC_NRBITS) - 1)
     30 #define _IOC_TYPEMASK ((1 << _IOC_TYPEBITS) - 1)
     31 #define _IOC_SIZEMASK ((1 << _IOC_SIZEBITS) - 1)
     32 #define _IOC_DIRMASK ((1 << _IOC_DIRBITS) - 1)
     33 #define _IOC_NRSHIFT 0
     34 #define _IOC_TYPESHIFT (_IOC_NRSHIFT + _IOC_NRBITS)
     35 #define _IOC_SIZESHIFT (_IOC_TYPESHIFT + _IOC_TYPEBITS)
     36 #define _IOC_DIRSHIFT (_IOC_SIZESHIFT + _IOC_SIZEBITS)
     37 #ifndef _IOC_NONE
     38 #define _IOC_NONE 0U
     39 #endif
     40 #ifndef _IOC_WRITE
     41 #define _IOC_WRITE 1U
     42 #endif
     43 #ifndef _IOC_READ
     44 #define _IOC_READ 2U
     45 #endif
     46 #define _IOC(dir,type,nr,size) (((dir) << _IOC_DIRSHIFT) | ((type) << _IOC_TYPESHIFT) | ((nr) << _IOC_NRSHIFT) | ((size) << _IOC_SIZESHIFT))
     47 #define _IOC_TYPECHECK(t) (sizeof(t))
     48 #define _IO(type,nr) _IOC(_IOC_NONE, (type), (nr), 0)
     49 #define _IOR(type,nr,size) _IOC(_IOC_READ, (type), (nr), (_IOC_TYPECHECK(size)))
     50 #define _IOW(type,nr,size) _IOC(_IOC_WRITE, (type), (nr), (_IOC_TYPECHECK(size)))
     51 #define _IOWR(type,nr,size) _IOC(_IOC_READ | _IOC_WRITE, (type), (nr), (_IOC_TYPECHECK(size)))
     52 #define _IOR_BAD(type,nr,size) _IOC(_IOC_READ, (type), (nr), sizeof(size))
     53 #define _IOW_BAD(type,nr,size) _IOC(_IOC_WRITE, (type), (nr), sizeof(size))
     54 #define _IOWR_BAD(type,nr,size) _IOC(_IOC_READ | _IOC_WRITE, (type), (nr), sizeof(size))
     55 #define _IOC_DIR(nr) (((nr) >> _IOC_DIRSHIFT) & _IOC_DIRMASK)
     56 #define _IOC_TYPE(nr) (((nr) >> _IOC_TYPESHIFT) & _IOC_TYPEMASK)
     57 #define _IOC_NR(nr) (((nr) >> _IOC_NRSHIFT) & _IOC_NRMASK)
     58 #define _IOC_SIZE(nr) (((nr) >> _IOC_SIZESHIFT) & _IOC_SIZEMASK)
     59 #define IOC_IN (_IOC_WRITE << _IOC_DIRSHIFT)
     60 #define IOC_OUT (_IOC_READ << _IOC_DIRSHIFT)
     61 #define IOC_INOUT ((_IOC_WRITE | _IOC_READ) << _IOC_DIRSHIFT)
     62 #define IOCSIZE_MASK (_IOC_SIZEMASK << _IOC_SIZESHIFT)
     63 #define IOCSIZE_SHIFT (_IOC_SIZESHIFT)
     64 #endif
     65