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.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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.
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
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 %
40 * $FreeBSD: src/sys/boot/pc98/boot2/inode.h,v 1.1 2002/10/03 16:20:14 nyan Exp $
41 * $DragonFly: src/sys/boot/pc98/boot2/Attic/inode.h,v 1.1 2003/11/10 06:08:38 dillon Exp $
44 #ifndef _UFS_UFS_INODE_H_
45 #define _UFS_UFS_INODE_H_
48 #include <sys/lockmgr.h>
49 #include <sys/queue.h>
53 * The size of a logical block number.
55 typedef long ufs_lbn_t;
58 * This must agree with the definition in <ufs/ufs/dir.h>.
60 #define doff_t int32_t
63 * The inode is used to describe each active (or recently active) file in the
64 * UFS filesystem. It is composed of two types of information. The first part
65 * is the information that is needed only while the file is active (such as
66 * the identity of the file and linkage to speed its lookup). The second part
67 * is the permanent meta-data associated with the file which is read in
68 * from the permanent dinode from long term storage when the file becomes
69 * active, and is put back when the file is no longer being used.
72 struct lock i_lock; /* Inode lock. >Keep this first< */
73 LIST_ENTRY(inode) i_hash;/* Hash chain. */
74 struct vnode *i_vnode;/* Vnode associated with this inode. */
75 struct vnode *i_devvp;/* Vnode for block I/O. */
76 u_int32_t i_flag; /* flags, see below */
77 dev_t i_dev; /* Device associated with the inode. */
78 ino_t i_number; /* The identity of the inode. */
79 int i_effnlink; /* i_nlink when I/O completes */
81 union { /* Associated filesystem. */
82 struct fs *fs; /* FFS */
83 struct ext2_sb_info *e2fs; /* EXT2FS */
85 #define i_fs inode_u.fs
86 #define i_e2fs inode_u.e2fs
87 struct dquot *i_dquot[MAXQUOTAS]; /* Dquot structures. */
88 u_quad_t i_modrev; /* Revision level for NFS lease. */
89 struct lockf *i_lockf;/* Head of byte-level lock list. */
91 * Side effects; used during directory lookup.
93 int32_t i_count; /* Size of free slot in directory. */
94 doff_t i_endoff; /* End of useful stuff in directory. */
95 doff_t i_diroff; /* Offset in dir, where we found last entry. */
96 doff_t i_offset; /* Offset of free space in directory. */
97 ino_t i_ino; /* Inode number of found directory. */
98 u_int32_t i_reclen; /* Size of found directory entry. */
99 u_int32_t i_spare[3]; /* XXX actually non-spare (for ext2fs). */
101 struct dirhash *i_dirhash; /* Hashing for large directories */
103 * The on-disk dinode itself.
105 struct dinode i_din; /* 128 bytes of the on-disk dinode. */
108 #define i_atime i_din.di_atime
109 #define i_atimensec i_din.di_atimensec
110 #define i_blocks i_din.di_blocks
111 #define i_ctime i_din.di_ctime
112 #define i_ctimensec i_din.di_ctimensec
113 #define i_db i_din.di_db
114 #define i_flags i_din.di_flags
115 #define i_gen i_din.di_gen
116 #define i_gid i_din.di_gid
117 #define i_ib i_din.di_ib
118 #define i_mode i_din.di_mode
119 #define i_mtime i_din.di_mtime
120 #define i_mtimensec i_din.di_mtimensec
121 #define i_nlink i_din.di_nlink
122 #define i_rdev i_din.di_rdev
123 #define i_shortlink i_din.di_shortlink
124 #define i_size i_din.di_size
125 #define i_uid i_din.di_uid
127 /* These flags are kept in i_flag. */
128 #define IN_ACCESS 0x0001 /* Access time update request. */
129 #define IN_CHANGE 0x0002 /* Inode change time update request. */
130 #define IN_UPDATE 0x0004 /* Modification time update request. */
131 #define IN_MODIFIED 0x0008 /* Inode has been modified. */
132 #define IN_RENAME 0x0010 /* Inode is being renamed. */
133 #define IN_SHLOCK 0x0020 /* File has shared lock. */
134 #define IN_EXLOCK 0x0040 /* File has exclusive lock. */
135 #define IN_HASHED 0x0080 /* Inode is on hash list */
136 #define IN_LAZYMOD 0x0100 /* Modified, but don't write yet. */
140 * Structure used to pass around logical block paths generated by
141 * ufs_getlbns and used by truncate and bmap code.
144 ufs_daddr_t in_lbn; /* Logical block number. */
145 int in_off; /* Offset in buffer. */
146 int in_exists; /* Flag if the block exists. */
149 /* Convert between inode pointers and vnode pointers. */
150 #define VTOI(vp) ((struct inode *)(vp)->v_data)
151 #define ITOV(ip) ((ip)->i_vnode)
153 /* Determine if soft dependencies are being done */
154 #define DOINGSOFTDEP(vp) ((vp)->v_mount->mnt_flag & MNT_SOFTDEP)
155 #define DOINGASYNC(vp) ((vp)->v_mount->mnt_flag & MNT_ASYNC)
157 /* This overlays the fid structure (see mount.h). */
159 u_int16_t ufid_len; /* Length of structure. */
160 u_int16_t ufid_pad; /* Force 32-bit alignment. */
161 ino_t ufid_ino; /* File number (ino). */
162 int32_t ufid_gen; /* Generation number. */
166 #endif /* !_UFS_UFS_INODE_H_ */