153840Spendry /* 263237Sbostic * Copyright (c) 1992, 1993 363237Sbostic * The Regents of the University of California. All rights reserved. 453840Spendry * 553840Spendry * This code is derived from software donated to Berkeley by 653840Spendry * Jan-Simon Pendry. 753840Spendry * 853840Spendry * %sccs.include.redist.c% 953840Spendry * 10*65803Sbostic * @(#)lofs.h 8.5 (Berkeley) 01/21/94 1153840Spendry * 1253840Spendry * $Id: lofs.h,v 1.8 1992/05/30 10:05:43 jsp Exp jsp $ 1353840Spendry */ 1453840Spendry 1553840Spendry struct lofs_args { 1653840Spendry char *target; /* Target of loopback */ 1753840Spendry }; 1853840Spendry 1953840Spendry struct lofsmount { 2053840Spendry struct mount *looped_vfs; 2153840Spendry struct vnode *rootvp; /* Reference to root lofsnode */ 2253840Spendry }; 2353840Spendry 2453840Spendry #ifdef KERNEL 2553840Spendry /* 2653840Spendry * A cache of vnode references 2753840Spendry */ 2853840Spendry struct lofsnode { 2953840Spendry struct lofsnode *a_forw; /* Hash chain */ 3053840Spendry struct lofsnode *a_back; 3153840Spendry struct vnode *a_lofsvp; /* Aliased vnode - VREFed once */ 3253840Spendry struct vnode *a_vnode; /* Back pointer to vnode/lofsnode */ 3353840Spendry }; 3453840Spendry 3565518Spendry extern int lofs_init __P((void)); 3653840Spendry extern int make_lofs __P((struct mount *mp, struct vnode **vpp)); 3753840Spendry 3853840Spendry #define VFSTOLOFS(mp) ((struct lofsmount *)((mp)->mnt_data)) 3953840Spendry #define LOFSP(vp) ((struct lofsnode *)(vp)->v_data) 4053840Spendry #define LOFSVP(vp) (LOFSP(vp)->a_lofsvp) 4153840Spendry 4253840Spendry extern int (**lofs_vnodeop_p)(); 4353840Spendry extern struct vfsops lofs_vfsops; 4453840Spendry #endif /* KERNEL */ 45