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/*        $NetBSD: mfsnode.h,v 1.21 2008/03/26 14:19:43 ad Exp $        */
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/*
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 * Copyright (c) 1989, 1993
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 *        The Regents of the University of California.  All rights reserved.
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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. 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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 *        @(#)mfsnode.h        8.3 (Berkeley) 5/19/95
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 */
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#ifndef _UFS_MFS_MFSNODE_H_
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#define _UFS_MFS_MFSNODE_H_
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/*
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 * This structure defines the control data for the memory based file system.
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 */
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struct mfsnode {
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        struct vnode *mfs_vnode;        /* vnode associated with this mfsnode */
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        void         *mfs_baseoff;                /* base of file system in memory */
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        long        mfs_size;                /* size of memory file system */
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        struct proc *mfs_proc;                /* supporting process */
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        int        mfs_shutdown;                /* shutdown this mfsnode */
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#if defined(_KERNEL)
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        kcondvar_t mfs_cv;                /* notifier */
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        int        mfs_refcnt;                /* number of references */
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        struct        bufq_state *mfs_buflist;/* list of I/O requests */
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#endif /* defined(_KERNEL) */
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};
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#if defined(_KERNEL)
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/*
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 * Convert between mfsnode pointers and vnode pointers
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 */
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#define VTOMFS(vp)        ((struct mfsnode *)(vp)->v_data)
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#define MFSTOV(mfsp)        ((mfsp)->mfs_vnode)
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/* Prototypes for MFS operations on vnodes. */
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#define        mfs_lookup        genfs_badop
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#define        mfs_create        genfs_badop
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#define        mfs_mknod        genfs_badop
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#define        mfs_access        genfs_badop
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#define        mfs_getattr        genfs_badop
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#define        mfs_setattr        genfs_badop
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#define        mfs_read        genfs_badop
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#define        mfs_write        genfs_badop
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#define        mfs_poll        genfs_badop
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#define        mfs_mmap        genfs_badop
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#define        mfs_seek        genfs_badop
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#define        mfs_remove        genfs_badop
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#define        mfs_link        genfs_badop
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#define        mfs_rename        genfs_badop
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#define        mfs_mkdir        genfs_badop
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#define        mfs_rmdir        genfs_badop
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#define        mfs_symlink        genfs_badop
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#define        mfs_readdir        genfs_badop
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#define        mfs_readlink        genfs_badop
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#define        mfs_abortop        genfs_badop
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#define        mfs_islocked        genfs_noislocked
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#define        mfs_pathconf        genfs_badop
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#define        mfs_advlock        genfs_badop
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#define        mfs_bwrite        vn_bwrite
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#define        mfs_revoke        genfs_revoke
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#define        mfs_putpages        genfs_null_putpages
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#endif /* defined(_KERNEL) */
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#endif /* !_UFS_MFS_MFSNODE_H_ */