group              36 bsp/drv/include/devctl.h #define	_DEVC(group,num)	(u_long)(((group) << 16) | (num))
group              59 include/sys/ioctl.h #define	_IOC(inout,group,num,len) \
group              60 include/sys/ioctl.h 	(u_long)(inout | ((len & IOCPARM_MASK) << 16) | ((group) << 8) | (num))
group              37 usr/lib/posix/file/chown.c chown(const char *path, uid_t owner, gid_t group)