_IOC_NRSHIFT 44 include/asm-generic/ioctl.h #define _IOC_TYPESHIFT (_IOC_NRSHIFT+_IOC_NRBITS) _IOC_NRSHIFT 68 include/asm-generic/ioctl.h ((nr) << _IOC_NRSHIFT) | \ _IOC_NRSHIFT 94 include/asm-generic/ioctl.h #define _IOC_NR(nr) (((nr) >> _IOC_NRSHIFT) & _IOC_NRMASK) _IOC_NRSHIFT 3209 sound/oss/vwsnd.c const unsigned int nrmask = _IOC_NRMASK << _IOC_NRSHIFT; _IOC_NRSHIFT 3210 sound/oss/vwsnd.c const unsigned int nr = (cmd & nrmask) >> _IOC_NRSHIFT;