D_CLONE
if (cdevsw[maj].d_flags & D_CLONE)
if (cdevsw[major(dev)].d_flags & D_CLONE) {
(cdevsw[major(vp->v_rdev)].d_flags & D_CLONE) &&
(cdevsw[major(nvp_rdev)].d_flags & D_CLONE) &&
0, D_CLONE, dev_init(c,n,kqfilter) }
(dev_type_mmap((*))) enodev, 0, D_CLONE }
dev_init(c,n,mmap), 0, D_CLONE, dev_init(c,n,kqfilter) }
(dev_type_mmap((*))) enodev, 0, D_CLONE, dev_init(c,n,kqfilter) }
(dev_init(c,n,mmap)), 0, D_CLONE }
(dev_type_mmap((*))) enodev, 0, D_CLONE }