Change the kernel dev_t, representing a pointer to a specinfo structure,
[dragonfly.git] / sys / vfs / gnu / ext2fs / inode.h
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1/*-
2 * Copyright (c) 1982, 1989, 1993
3 * The Regents of the University of California. All rights reserved.
4 * (c) UNIX System Laboratories, Inc.
5 * All or some portions of this file are derived from material licensed
6 * to the University of California by American Telephone and Telegraph
7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
8 * the permission of UNIX System Laboratories, Inc.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the University of
21 * California, Berkeley and its contributors.
22 * 4. Neither the name of the University nor the names of its contributors
23 * may be used to endorse or promote products derived from this software
24 * without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * SUCH DAMAGE.
37 *
38 * @(#)inode.h 8.9 (Berkeley) 5/14/95
39 * $FreeBSD: src/sys/ufs/ufs/inode.h,v 1.28.2.2 2001/09/29 12:52:52 iedowse Exp $
b13267a5 40 * $DragonFly: src/sys/vfs/gnu/ext2fs/inode.h,v 1.3 2006/09/10 01:26:40 dillon Exp $
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41 */
42
43#ifndef _VFS_GNU_EXT2FS_INODE_H_
44#define _VFS_GNU_EXT2FS_INODE_H_
45
46#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
47
48#ifndef _SYS_LOCK_H_
49#include <sys/lock.h>
50#endif
51#ifndef _SYS_LOCKF_H
52#include <sys/lockf.h>
53#endif
54
55#endif
56
57#ifndef _SYS_QUEUE_H_
58#include <sys/queue.h>
59#endif
60#include "dinode.h"
61
62/*
63 * The size of a logical block number.
64 */
65typedef long ext2_lbn_t;
66
67/*
68 * This must agree with the definition in "dir.h"
69 */
70#define doff_t int32_t
71
72#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
73
74/*
75 * An EXT2FS inode is basically a UFS inode with some spare fields
76 * redefined and a different superblock structure.
77 */
78struct inode {
79 struct inode *i_next;/* Hash chain */
80 struct vnode *i_vnode;/* Vnode associated with this inode. */
81 struct vnode *i_devvp;/* Vnode for block I/O. */
82 uint32_t i_flag; /* flags, see below */
b13267a5 83 cdev_t i_dev; /* Device associated with the inode. */
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84 ino_t i_number; /* The identity of the inode. */
85 int i_effnlink; /* i_nlink when I/O completes */
86
87 struct ext2_sb_info *i_e2fs; /* EXT2FS */
88 struct ext2_dquot *i_dquot[MAXQUOTAS]; /* Dquot structures. */
89 u_quad_t i_modrev; /* Revision level for NFS lease. */
90 struct lockf i_lockf;/* Head of byte-level lock list. */
91 /*
92 * Side effects; used during directory lookup.
93 */
94 int32_t i_count; /* Size of free slot in directory. */
95 doff_t i_endoff; /* End of useful stuff in directory. */
96 doff_t i_diroff; /* Offset in dir, where we found last entry. */
97 doff_t i_offset; /* Offset of free space in directory. */
98 ino_t i_ino; /* Inode number of found directory. */
99 uint32_t i_reclen; /* Size of found directory entry. */
100 uint32_t i_spare[3]; /* XXX actually non-spare (for ext2fs). */
101
102 struct dirhash *i_dirhash; /* Hashing for large directories */
103 /*
104 * The on-disk dinode itself (128 bytes)
105 */
106 struct ext2_dinode i_din;
107};
108
109#ifndef NO_I_DEFINES
110
111#define i_atime i_din.di_atime
112#define i_atimensec i_din.di_atimensec
113#define i_blocks i_din.di_blocks
114#define i_ctime i_din.di_ctime
115#define i_ctimensec i_din.di_ctimensec
116#define i_db i_din.di_db
117#define i_flags i_din.di_flags
118#define i_gen i_din.di_gen
119#define i_gid i_din.di_gid
120#define i_ib i_din.di_ib
121#define i_mode i_din.di_mode
122#define i_mtime i_din.di_mtime
123#define i_mtimensec i_din.di_mtimensec
124#define i_nlink i_din.di_nlink
125#define i_rdev i_din.di_rdev
126#define i_shortlink i_din.di_shortlink
127#define i_size i_din.di_size
128#define i_uid i_din.di_uid
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129
130#endif
131
132#endif
133
134/* These flags are kept in i_flag. */
135#define IN_ACCESS 0x0001 /* Access time update request. */
136#define IN_CHANGE 0x0002 /* Inode change time update request. */
137#define IN_UPDATE 0x0004 /* Modification time update request. */
138#define IN_MODIFIED 0x0008 /* Inode has been modified. */
139#define IN_RENAME 0x0010 /* Inode is being renamed. */
140#define IN_SHLOCK 0x0020 /* File has shared lock. */
141#define IN_EXLOCK 0x0040 /* File has exclusive lock. */
142#define IN_HASHED 0x0080 /* Inode is on hash list */
143#define IN_LAZYMOD 0x0100 /* Modified, but don't write yet. */
144
145#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
146
147/*
148 * Structure used to pass around logical block paths generated by
149 * ext2_getlbns and used by truncate and bmap code.
150 */
151struct indir {
152 ext2_daddr_t in_lbn; /* Logical block number. */
153 int in_off; /* Offset in buffer. */
154 int in_exists; /* Flag if the block exists. */
155};
156
157/* Convert between inode pointers and vnode pointers. */
158#define VTOI(vp) ((struct inode *)(vp)->v_data)
159#define ITOV(ip) ((ip)->i_vnode)
160
161/* Determine if soft dependencies are being done */
162#define DOINGSOFTDEP(vp) ((vp)->v_mount->mnt_flag & MNT_SOFTDEP)
163#define DOINGASYNC(vp) ((vp)->v_mount->mnt_flag & MNT_ASYNC)
164
165/* This overlays the fid structure (see mount.h). */
166struct ufid {
167 uint16_t ufid_len; /* Length of structure. */
168 uint16_t ufid_pad; /* Force 32-bit alignment. */
169 ino_t ufid_ino; /* File number (ino). */
170 int32_t ufid_gen; /* Generation number. */
171};
172#endif /* _KERNEL || _KERNEL_STRUCTURES */
173
174#endif /* !_VFS_GNU_EXT2FS_INODE_H_ */