1951a39d68df598db08dfced8b4707755864a0492Ying Wang/**************************************************************************** 2951a39d68df598db08dfced8b4707755864a0492Ying Wang **************************************************************************** 3951a39d68df598db08dfced8b4707755864a0492Ying Wang *** 4951a39d68df598db08dfced8b4707755864a0492Ying Wang *** This header was automatically generated from a Linux kernel header 5951a39d68df598db08dfced8b4707755864a0492Ying Wang *** of the same name, to make information necessary for userspace to 6951a39d68df598db08dfced8b4707755864a0492Ying Wang *** call into the kernel available to libc. It contains only constants, 7951a39d68df598db08dfced8b4707755864a0492Ying Wang *** structures, and macros generated from the original header, and thus, 8951a39d68df598db08dfced8b4707755864a0492Ying Wang *** contains no copyrightable information. 9951a39d68df598db08dfced8b4707755864a0492Ying Wang *** 10951a39d68df598db08dfced8b4707755864a0492Ying Wang **************************************************************************** 11951a39d68df598db08dfced8b4707755864a0492Ying Wang ****************************************************************************/ 12951a39d68df598db08dfced8b4707755864a0492Ying Wang#ifndef _ASM_GENERIC_IOCTL_H 13951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _ASM_GENERIC_IOCTL_H 14951a39d68df598db08dfced8b4707755864a0492Ying Wang 15951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _IOC_NRBITS 8 16951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _IOC_TYPEBITS 8 17951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _IOC_SIZEBITS 14 18951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _IOC_DIRBITS 2 19951a39d68df598db08dfced8b4707755864a0492Ying Wang 20951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _IOC_NRMASK ((1 << _IOC_NRBITS)-1) 21951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _IOC_TYPEMASK ((1 << _IOC_TYPEBITS)-1) 22951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _IOC_SIZEMASK ((1 << _IOC_SIZEBITS)-1) 23951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _IOC_DIRMASK ((1 << _IOC_DIRBITS)-1) 24951a39d68df598db08dfced8b4707755864a0492Ying Wang 25951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _IOC_NRSHIFT 0 26951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _IOC_TYPESHIFT (_IOC_NRSHIFT+_IOC_NRBITS) 27951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _IOC_SIZESHIFT (_IOC_TYPESHIFT+_IOC_TYPEBITS) 28951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _IOC_DIRSHIFT (_IOC_SIZESHIFT+_IOC_SIZEBITS) 29951a39d68df598db08dfced8b4707755864a0492Ying Wang 30951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _IOC_NONE 0U 31951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _IOC_WRITE 1U 32951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _IOC_READ 2U 33951a39d68df598db08dfced8b4707755864a0492Ying Wang 34951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _IOC(dir,type,nr,size) (((dir) << _IOC_DIRSHIFT) | ((type) << _IOC_TYPESHIFT) | ((nr) << _IOC_NRSHIFT) | ((size) << _IOC_SIZESHIFT)) 35951a39d68df598db08dfced8b4707755864a0492Ying Wang 36951a39d68df598db08dfced8b4707755864a0492Ying Wangextern unsigned int __invalid_size_argument_for_IOC; 37951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _IOC_TYPECHECK(t) ((sizeof(t) == sizeof(t[1]) && sizeof(t) < (1 << _IOC_SIZEBITS)) ? sizeof(t) : __invalid_size_argument_for_IOC) 38951a39d68df598db08dfced8b4707755864a0492Ying Wang 39951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _IO(type,nr) _IOC(_IOC_NONE,(type),(nr),0) 40951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _IOR(type,nr,size) _IOC(_IOC_READ,(type),(nr),(_IOC_TYPECHECK(size))) 41951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _IOW(type,nr,size) _IOC(_IOC_WRITE,(type),(nr),(_IOC_TYPECHECK(size))) 42951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _IOWR(type,nr,size) _IOC(_IOC_READ|_IOC_WRITE,(type),(nr),(_IOC_TYPECHECK(size))) 43951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _IOR_BAD(type,nr,size) _IOC(_IOC_READ,(type),(nr),sizeof(size)) 44951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _IOW_BAD(type,nr,size) _IOC(_IOC_WRITE,(type),(nr),sizeof(size)) 45951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _IOWR_BAD(type,nr,size) _IOC(_IOC_READ|_IOC_WRITE,(type),(nr),sizeof(size)) 46951a39d68df598db08dfced8b4707755864a0492Ying Wang 47951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _IOC_DIR(nr) (((nr) >> _IOC_DIRSHIFT) & _IOC_DIRMASK) 48951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _IOC_TYPE(nr) (((nr) >> _IOC_TYPESHIFT) & _IOC_TYPEMASK) 49951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _IOC_NR(nr) (((nr) >> _IOC_NRSHIFT) & _IOC_NRMASK) 50951a39d68df598db08dfced8b4707755864a0492Ying Wang#define _IOC_SIZE(nr) (((nr) >> _IOC_SIZESHIFT) & _IOC_SIZEMASK) 51951a39d68df598db08dfced8b4707755864a0492Ying Wang 52951a39d68df598db08dfced8b4707755864a0492Ying Wang#define IOC_IN (_IOC_WRITE << _IOC_DIRSHIFT) 53951a39d68df598db08dfced8b4707755864a0492Ying Wang#define IOC_OUT (_IOC_READ << _IOC_DIRSHIFT) 54951a39d68df598db08dfced8b4707755864a0492Ying Wang#define IOC_INOUT ((_IOC_WRITE|_IOC_READ) << _IOC_DIRSHIFT) 55951a39d68df598db08dfced8b4707755864a0492Ying Wang#define IOCSIZE_MASK (_IOC_SIZEMASK << _IOC_SIZESHIFT) 56951a39d68df598db08dfced8b4707755864a0492Ying Wang#define IOCSIZE_SHIFT (_IOC_SIZESHIFT) 57951a39d68df598db08dfced8b4707755864a0492Ying Wang 58951a39d68df598db08dfced8b4707755864a0492Ying Wang#endif 59