1 /* $OpenBSD: mfsnode.h,v 1.11 2003/09/23 16:51:13 millert Exp $ */
2 /* $NetBSD: mfsnode.h,v 1.3 1996/02/09 22:31:31 christos Exp $ */
3
4 /*
5 * Copyright (c) 1989, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * @(#)mfsnode.h 8.2 (Berkeley) 8/11/93
33 */
34
35 /*
36 * This structure defines the control data for the memory based file system.
37 */
38
39 struct mfsnode {
40 struct vnode *mfs_vnode; /* vnode associated with this mfsnode */
41 caddr_t mfs_baseoff; /* base of file system in memory */
42 long mfs_size; /* size of memory file system */
43 pid_t mfs_pid; /* supporting process pid */
44 struct buf *mfs_buflist; /* list of I/O requests */
45 long mfs_spare[4];
46 };
47
48 /*
49 * Convert between mfsnode pointers and vnode pointers
50 */
51 #define VTOMFS(vp) ((struct mfsnode *)(vp)->v_data)
52 #define MFSTOV(mfsp) ((mfsp)->mfs_vnode)
53
54 /* Prototypes for MFS operations on vnodes. */
55 #define mfs_lookup mfs_badop
56 #define mfs_create mfs_badop
57 #define mfs_mknod mfs_badop
58 #define mfs_access mfs_badop
59 #define mfs_getattr mfs_badop
60 #define mfs_setattr mfs_badop
61 #define mfs_read mfs_badop
62 #define mfs_write mfs_badop
63 #define mfs_poll mfs_badop
64 #define mfs_mmap mfs_badop
65 #define mfs_seek mfs_badop
66 #define mfs_remove mfs_badop
67 #define mfs_link mfs_badop
68 #define mfs_rename mfs_badop
69 #define mfs_mkdir mfs_badop
70 #define mfs_rmdir mfs_badop
71 #define mfs_symlink mfs_badop
72 #define mfs_readdir mfs_badop
73 #define mfs_readlink mfs_badop
74 #define mfs_abortop mfs_badop
75 #define mfs_lock vop_generic_lock
76 #define mfs_unlock vop_generic_unlock
77 #define mfs_islocked vop_generic_islocked
78 #define mfs_pathconf mfs_badop
79 #define mfs_advlock mfs_badop
80 #define mfs_blkatoff mfs_badop
81 #define mfs_valloc mfs_badop
82 #define mfs_vfree mfs_badop
83 #define mfs_truncate mfs_badop
84 #define mfs_update nullop
85 #define mfs_bwrite vop_generic_bwrite