46 #define _IOC(dir,type,nr,size) (((dir) << _IOC_DIRSHIFT) | ((type) << _IOC_TYPESHIFT) | ((nr) << _I…  argument
48 #define _IO(type,nr) _IOC(_IOC_NONE, (type), (nr), 0)  argument
49 #define _IOR(type,nr,size) _IOC(_IOC_READ, (type), (nr), (_IOC_TYPECHECK(size)))  argument
50 #define _IOW(type,nr,size) _IOC(_IOC_WRITE, (type), (nr), (_IOC_TYPECHECK(size)))  argument
51 #define _IOWR(type,nr,size) _IOC(_IOC_READ | _IOC_WRITE, (type), (nr), (_IOC_TYPECHECK(size)))  argument
52 #define _IOR_BAD(type,nr,size) _IOC(_IOC_READ, (type), (nr), sizeof(size))  argument
53 #define _IOW_BAD(type,nr,size) _IOC(_IOC_WRITE, (type), (nr), sizeof(size))  argument
54 #define _IOWR_BAD(type,nr,size) _IOC(_IOC_READ | _IOC_WRITE, (type), (nr), sizeof(size))  argument
55 #define _IOC_DIR(nr) (((nr) >> _IOC_DIRSHIFT) & _IOC_DIRMASK)  argument
56 #define _IOC_TYPE(nr) (((nr) >> _IOC_TYPESHIFT) & _IOC_TYPEMASK)  argument
57 #define _IOC_NR(nr) (((nr) >> _IOC_NRSHIFT) & _IOC_NRMASK)  argument
58 #define _IOC_SIZE(nr) (((nr) >> _IOC_SIZESHIFT) & _IOC_SIZEMASK)  argument