/* * 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. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)lofs.h 8.1 (Berkeley) 6/10/93 * * $Id: lofs.h,v 1.8 1992/05/30 10:05:43 jsp Exp jsp $ */ struct lofs_args { char *target; /* Target of loopback */ }; struct lofsmount { struct mount *looped_vfs; struct vnode *rootvp; /* Reference to root lofsnode */ }; #ifdef KERNEL /* * A cache of vnode references */ struct lofsnode { struct lofsnode *a_forw; /* Hash chain */ struct lofsnode *a_back; struct vnode *a_lofsvp; /* Aliased vnode - VREFed once */ struct vnode *a_vnode; /* Back pointer to vnode/lofsnode */ }; extern int make_lofs __P((struct mount *mp, struct vnode **vpp)); #define VFSTOLOFS(mp) ((struct lofsmount *)((mp)->mnt_data)) #define LOFSP(vp) ((struct lofsnode *)(vp)->v_data) #ifdef LOFS_DIAGNOSTIC extern struct vnode *lofs_checkvp __P((struct vnode *vp, char *fil, int lno)); #define LOFSVP(vp) lofs_checkvp(vp, __FILE__, __LINE__) #else #define LOFSVP(vp) (LOFSP(vp)->a_lofsvp) #endif extern int (**lofs_vnodeop_p)(); extern struct vfsops lofs_vfsops; #endif /* KERNEL */