ctfs_vfs_t
ctfs_vfs_t *data;
data = kmem_alloc(sizeof (ctfs_vfs_t), KM_SLEEP);
ctfs_vfs_t *data;
kmem_free(data, sizeof (ctfs_vfs_t));
vp = ((ctfs_vfs_t *)vfsp->vfs_data)->ctvfs_root;