usr/src/sys/miscfs/kernfs/kernfs.h

/*
 * Copyright (c) 1992, 1993
 *      The Regents of the University of California.  All rights reserved.
 * All rights reserved.
 *
 * This code is derived from software donated to Berkeley by
 * Jan-Simon Pendry.
 *
 * %sccs.include.redist.c%
 *
 *      @(#)kernfs.h    8.1 (Berkeley) %G%
 */

#define _PATH_KERNFS    "/kern"         /* Default mountpoint */

#ifdef KERNEL
struct kernfs_mount {
        struct vnode    *kf_root;       /* Root node */
};

struct kernfs_node {
        struct kern_target *kf_kt;
};

#define VFSTOKERNFS(mp) ((struct kernfs_mount *)((mp)->mnt_data))
#define VTOKERN(vp) ((struct kernfs_node *)(vp)->v_data)

extern int (**kernfs_vnodeop_p)();
extern struct vfsops kernfs_vfsops;
extern struct vnode *rrootvp;
#endif /* KERNEL */