77 lines
2.9 KiB
C
77 lines
2.9 KiB
C
/*
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* Copyright (c) 1992 The Regents of the University of California
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* Copyright (c) 1990, 1992 Jan-Simon Pendry
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* All rights reserved.
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*
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* This code is derived from software donated to Berkeley by
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* Jan-Simon Pendry.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* From:
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* Id: lofs.h,v 4.1 1993/12/17 10:47:45 jsp Rel
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*
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* $Id: lofs.h,v 1.1 1994/01/05 14:15:31 cgd Exp $
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*/
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struct lofs_args {
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char *target; /* Target of loopback */
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};
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struct lofsmount {
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struct mount *looped_vfs;
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struct vnode *rootvp; /* Reference to root lofsnode */
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};
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#ifdef KERNEL
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/*
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* A cache of vnode references
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*/
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struct lofsnode {
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struct lofsnode *a_forw; /* Hash chain */
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struct lofsnode *a_back;
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struct vnode *a_lofsvp; /* Aliased vnode - VREFed once */
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struct vnode *a_vnode; /* Back pointer to vnode/lofsnode */
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};
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extern int make_lofs __P((struct mount *mp, struct nameidata *ndp));
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#define VFSTOLOFS(mp) ((struct lofsmount *)((mp)->mnt_data))
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#define LOFSP(vp) ((struct lofsnode *)(vp)->v_data)
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#ifdef LOFS_DIAGNOSTIC
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extern struct vnode *lofs_checkvp __P((struct vnode *vp, char *fil, int lno));
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#define LOFSVP(vp) lofs_checkvp(vp, __FILE__, __LINE__)
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#else
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#define LOFSVP(vp) (LOFSP(vp)->a_lofsvp)
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#endif
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extern struct vnodeops lofs_vnodeops;
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extern struct vfsops lofs_vfsops;
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#endif /* KERNEL */
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