+extern int nblkdev; /* number of entries in bdevsw */
+extern int nchrdev; /* number of entries in cdevsw */
+extern dev_t rootdev; /* root device */
+extern struct vnode *rootvp; /* vnode equivalent to above */
+#endif /* __APPLE_API_PRIVATE */
+
+#ifdef __APPLE_API_UNSTABLE
+#define NO_FUNNEL 0
+#define KERNEL_FUNNEL 1
+#define NETWORK_FUNNEL 2
+