LCOM1920-T02G10

/*        $NetBSD: mfsnode.h,v 1.21 2008/03/26 14:19:43 ad Exp $        */

/*

 * Copyright (c) 1989, 1993

 *        The Regents of the University of California.  All rights reserved.

 *

 * 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. 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.

 *

 *        @(#)mfsnode.h        8.3 (Berkeley) 5/19/95

 */

#ifndef _UFS_MFS_MFSNODE_H_

#define _UFS_MFS_MFSNODE_H_

/*

 * This structure defines the control data for the memory based file system.

 */

struct mfsnode {

        struct vnode *mfs_vnode;        /* vnode associated with this mfsnode */

        void         *mfs_baseoff;                /* base of file system in memory */

        long        mfs_size;                /* size of memory file system */

        struct proc *mfs_proc;                /* supporting process */

        int        mfs_shutdown;                /* shutdown this mfsnode */

#if defined(_KERNEL)

        kcondvar_t mfs_cv;                /* notifier */

        int        mfs_refcnt;                /* number of references */

        struct        bufq_state *mfs_buflist;/* list of I/O requests */

#endif /* defined(_KERNEL) */

};

#if defined(_KERNEL)

/*

 * Convert between mfsnode pointers and vnode pointers

 */

#define VTOMFS(vp)        ((struct mfsnode *)(vp)->v_data)

#define MFSTOV(mfsp)        ((mfsp)->mfs_vnode)

/* Prototypes for MFS operations on vnodes. */

#define        mfs_lookup        genfs_badop

#define        mfs_create        genfs_badop

#define        mfs_mknod        genfs_badop

#define        mfs_access        genfs_badop

#define        mfs_getattr        genfs_badop

#define        mfs_setattr        genfs_badop

#define        mfs_read        genfs_badop

#define        mfs_write        genfs_badop

#define        mfs_poll        genfs_badop

#define        mfs_mmap        genfs_badop

#define        mfs_seek        genfs_badop

#define        mfs_remove        genfs_badop

#define        mfs_link        genfs_badop

#define        mfs_rename        genfs_badop

#define        mfs_mkdir        genfs_badop

#define        mfs_rmdir        genfs_badop

#define        mfs_symlink        genfs_badop

#define        mfs_readdir        genfs_badop

#define        mfs_readlink        genfs_badop

#define        mfs_abortop        genfs_badop

#define        mfs_islocked        genfs_noislocked

#define        mfs_pathconf        genfs_badop

#define        mfs_advlock        genfs_badop

#define        mfs_bwrite        vn_bwrite

#define        mfs_revoke        genfs_revoke

#define        mfs_putpages        genfs_null_putpages

#endif /* defined(_KERNEL) */

#endif /* !_UFS_MFS_MFSNODE_H_ */