tag	line	file	source code
IOCPARM_MASK	83	include/linux/soundcard.h	#define  _IOR(x,y,t)  ((int)(IOC_OUT|((sizeof(t)&IOCPARM_MASK)<<16)|(x<<8)|y))
IOCPARM_MASK	84	include/linux/soundcard.h	#define  _IOW(x,y,t)  ((int)(IOC_IN|((sizeof(t)&IOCPARM_MASK)<<16)|(x<<8)|y))
IOCPARM_MASK	86	include/linux/soundcard.h	#define  _IOWR(x,y,t)  ((int)(IOC_INOUT|((sizeof(t)&IOCPARM_MASK)<<16)|(x<<8)|y))