_IOC_TYPECHECK 84 include/asm-generic/ioctl.h #define _IOR(type,nr,size) _IOC(_IOC_READ,(type),(nr),(_IOC_TYPECHECK(size))) _IOC_TYPECHECK 85 include/asm-generic/ioctl.h #define _IOW(type,nr,size) _IOC(_IOC_WRITE,(type),(nr),(_IOC_TYPECHECK(size))) _IOC_TYPECHECK 86 include/asm-generic/ioctl.h #define _IOWR(type,nr,size) _IOC(_IOC_READ|_IOC_WRITE,(type),(nr),(_IOC_TYPECHECK(size)))