1 | /* $NetBSD: mfsnode.h,v 1.21 2008/03/26 14:19:43 ad Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 1989, 1993 |
5 | * The Regents of the University of California. All rights reserved. |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without |
8 | * modification, are permitted provided that the following conditions |
9 | * are met: |
10 | * 1. Redistributions of source code must retain the above copyright |
11 | * notice, this list of conditions and the following disclaimer. |
12 | * 2. Redistributions in binary form must reproduce the above copyright |
13 | * notice, this list of conditions and the following disclaimer in the |
14 | * documentation and/or other materials provided with the distribution. |
15 | * 3. Neither the name of the University nor the names of its contributors |
16 | * may be used to endorse or promote products derived from this software |
17 | * without specific prior written permission. |
18 | * |
19 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
29 | * SUCH DAMAGE. |
30 | * |
31 | * @(#)mfsnode.h 8.3 (Berkeley) 5/19/95 |
32 | */ |
33 | |
34 | #ifndef _UFS_MFS_MFSNODE_H_ |
35 | #define _UFS_MFS_MFSNODE_H_ |
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 | void *mfs_baseoff; /* base of file system in memory */ |
44 | long mfs_size; /* size of memory file system */ |
45 | struct proc *mfs_proc; /* supporting process */ |
46 | int mfs_shutdown; /* shutdown this mfsnode */ |
47 | #if defined(_KERNEL) |
48 | kcondvar_t mfs_cv; /* notifier */ |
49 | int mfs_refcnt; /* number of references */ |
50 | struct bufq_state *mfs_buflist;/* list of I/O requests */ |
51 | #endif /* defined(_KERNEL) */ |
52 | }; |
53 | |
54 | #if defined(_KERNEL) |
55 | /* |
56 | * Convert between mfsnode pointers and vnode pointers |
57 | */ |
58 | #define VTOMFS(vp) ((struct mfsnode *)(vp)->v_data) |
59 | #define MFSTOV(mfsp) ((mfsp)->mfs_vnode) |
60 | |
61 | /* Prototypes for MFS operations on vnodes. */ |
62 | #define mfs_lookup genfs_badop |
63 | #define mfs_create genfs_badop |
64 | #define mfs_mknod genfs_badop |
65 | #define mfs_access genfs_badop |
66 | #define mfs_getattr genfs_badop |
67 | #define mfs_setattr genfs_badop |
68 | #define mfs_read genfs_badop |
69 | #define mfs_write genfs_badop |
70 | #define mfs_poll genfs_badop |
71 | #define mfs_mmap genfs_badop |
72 | #define mfs_seek genfs_badop |
73 | #define mfs_remove genfs_badop |
74 | #define mfs_link genfs_badop |
75 | #define mfs_rename genfs_badop |
76 | #define mfs_mkdir genfs_badop |
77 | #define mfs_rmdir genfs_badop |
78 | #define mfs_symlink genfs_badop |
79 | #define mfs_readdir genfs_badop |
80 | #define mfs_readlink genfs_badop |
81 | #define mfs_abortop genfs_badop |
82 | #define mfs_islocked genfs_noislocked |
83 | #define mfs_pathconf genfs_badop |
84 | #define mfs_advlock genfs_badop |
85 | #define mfs_bwrite vn_bwrite |
86 | #define mfs_revoke genfs_revoke |
87 | #define mfs_putpages genfs_null_putpages |
88 | |
89 | #endif /* defined(_KERNEL) */ |
90 | |
91 | #endif /* !_UFS_MFS_MFSNODE_H_ */ |
92 | |