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mfsnode.h revision 1.1 
      1 /*
      2  * Copyright (c) 1989, 1993
      3  *	The Regents of the University of California.  All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. All advertising materials mentioning features or use of this software
     14  *    must display the following acknowledgement:
     15  *	This product includes software developed by the University of
     16  *	California, Berkeley and its contributors.
     17  * 4. Neither the name of the University nor the names of its contributors
     18  *    may be used to endorse or promote products derived from this software
     19  *    without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  * SUCH DAMAGE.
     32  *
     33  *	from: @(#)mfsnode.h	8.2 (Berkeley) 8/11/93
     34  *	$Id: mfsnode.h,v 1.1 1994/06/08 11:42:59 mycroft Exp $
     35  */
     36 
     37 /*
     38  * This structure defines the control data for the memory based file system.
     39  */
     40 
     41 struct mfsnode {
     42 	struct	vnode *mfs_vnode;	/* vnode associated with this mfsnode */
     43 	caddr_t	mfs_baseoff;		/* base of file system in memory */
     44 	long	mfs_size;		/* size of memory file system */
     45 	pid_t	mfs_pid;		/* supporting process pid */
     46 	struct	buf *mfs_buflist;	/* list of I/O requests */
     47 	long	mfs_spare[4];
     48 };
     49 
     50 /*
     51  * Convert between mfsnode pointers and vnode pointers
     52  */
     53 #define VTOMFS(vp)	((struct mfsnode *)(vp)->v_data)
     54 #define MFSTOV(mfsp)	((mfsp)->mfs_vnode)
     55 
     56 /* Prototypes for MFS operations on vnodes. */
     57 #define mfs_lookup ((int (*) __P((struct  vop_lookup_args *)))mfs_badop)
     58 #define mfs_create ((int (*) __P((struct  vop_create_args *)))mfs_badop)
     59 #define mfs_mknod ((int (*) __P((struct  vop_mknod_args *)))mfs_badop)
     60 #define mfs_access ((int (*) __P((struct  vop_access_args *)))mfs_badop)
     61 #define mfs_getattr ((int (*) __P((struct  vop_getattr_args *)))mfs_badop)
     62 #define mfs_setattr ((int (*) __P((struct  vop_setattr_args *)))mfs_badop)
     63 #define mfs_read ((int (*) __P((struct  vop_read_args *)))mfs_badop)
     64 #define mfs_write ((int (*) __P((struct  vop_write_args *)))mfs_badop)
     65 #define mfs_select ((int (*) __P((struct  vop_select_args *)))mfs_badop)
     66 #define mfs_mmap ((int (*) __P((struct  vop_mmap_args *)))mfs_badop)
     67 #define mfs_seek ((int (*) __P((struct  vop_seek_args *)))mfs_badop)
     68 #define mfs_remove ((int (*) __P((struct  vop_remove_args *)))mfs_badop)
     69 #define mfs_link ((int (*) __P((struct  vop_link_args *)))mfs_badop)
     70 #define mfs_rename ((int (*) __P((struct  vop_rename_args *)))mfs_badop)
     71 #define mfs_mkdir ((int (*) __P((struct  vop_mkdir_args *)))mfs_badop)
     72 #define mfs_rmdir ((int (*) __P((struct  vop_rmdir_args *)))mfs_badop)
     73 #define mfs_symlink ((int (*) __P((struct  vop_symlink_args *)))mfs_badop)
     74 #define mfs_readdir ((int (*) __P((struct  vop_readdir_args *)))mfs_badop)
     75 #define mfs_readlink ((int (*) __P((struct  vop_readlink_args *)))mfs_badop)
     76 #define mfs_abortop ((int (*) __P((struct  vop_abortop_args *)))mfs_badop)
     77 #define mfs_lock ((int (*) __P((struct  vop_lock_args *)))nullop)
     78 #define mfs_unlock ((int (*) __P((struct  vop_unlock_args *)))nullop)
     79 #define mfs_islocked ((int (*) __P((struct  vop_islocked_args *)))nullop)
     80 #define mfs_pathconf ((int (*) __P((struct  vop_pathconf_args *)))mfs_badop)
     81 #define mfs_advlock ((int (*) __P((struct  vop_advlock_args *)))mfs_badop)
     82 #define mfs_blkatoff ((int (*) __P((struct  vop_blkatoff_args *)))mfs_badop)
     83 #define mfs_valloc ((int (*) __P((struct  vop_valloc_args *)))mfs_badop)
     84 #define mfs_vfree ((int (*) __P((struct  vop_vfree_args *)))mfs_badop)
     85 #define mfs_truncate ((int (*) __P((struct  vop_truncate_args *)))mfs_badop)
     86 #define mfs_update ((int (*) __P((struct  vop_update_args *)))mfs_badop)
     87 #define mfs_bwrite ((int (*) __P((struct  vop_bwrite_args *)))vn_bwrite)
     88