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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 * $DragonFly: src/sys/vfs/ufs/inode.h,v 1.4 2003/08/27 02:03:23 dillon Exp $
43 #ifndef _UFS_UFS_INODE_H_
44 #define _UFS_UFS_INODE_H_
47 #include <sys/queue.h>
51 * The size of a logical block number.
53 typedef long ufs_lbn_t;
56 * This must agree with the definition in <ufs/ufs/dir.h>.
58 #define doff_t int32_t
61 * The inode is used to describe each active (or recently active) file in the
62 * UFS filesystem. It is composed of two types of information. The first part
63 * is the information that is needed only while the file is active (such as
64 * the identity of the file and linkage to speed its lookup). The second part
65 * is the permanent meta-data associated with the file which is read in
66 * from the permanent dinode from long term storage when the file becomes
67 * active, and is put back when the file is no longer being used.
70 struct lock i_lock; /* Inode lock. >Keep this first< */
71 LIST_ENTRY(inode) i_hash;/* Hash chain. */
72 struct vnode *i_vnode;/* Vnode associated with this inode. */
73 struct vnode *i_devvp;/* Vnode for block I/O. */
74 u_int32_t i_flag; /* flags, see below */
75 dev_t i_dev; /* Device associated with the inode. */
76 ino_t i_number; /* The identity of the inode. */
77 int i_effnlink; /* i_nlink when I/O completes */
79 union { /* Associated filesystem. */
80 struct fs *fs; /* FFS */
81 struct ext2_sb_info *e2fs; /* EXT2FS */
83 #define i_fs inode_u.fs
84 #define i_e2fs inode_u.e2fs
85 struct dquot *i_dquot[MAXQUOTAS]; /* Dquot structures. */
86 u_quad_t i_modrev; /* Revision level for NFS lease. */
87 struct lockf *i_lockf;/* Head of byte-level lock list. */
89 * Side effects; used during directory lookup.
91 int32_t i_count; /* Size of free slot in directory. */
92 doff_t i_endoff; /* End of useful stuff in directory. */
93 doff_t i_diroff; /* Offset in dir, where we found last entry. */
94 doff_t i_offset; /* Offset of free space in directory. */
95 ino_t i_ino; /* Inode number of found directory. */
96 u_int32_t i_reclen; /* Size of found directory entry. */
97 u_int32_t i_spare[3]; /* XXX actually non-spare (for ext2fs). */
99 struct dirhash *i_dirhash; /* Hashing for large directories */
101 * The on-disk dinode itself.
103 struct dinode i_din; /* 128 bytes of the on-disk dinode. */
106 #define i_atime i_din.di_atime
107 #define i_atimensec i_din.di_atimensec
108 #define i_blocks i_din.di_blocks
109 #define i_ctime i_din.di_ctime
110 #define i_ctimensec i_din.di_ctimensec
111 #define i_db i_din.di_db
112 #define i_flags i_din.di_flags
113 #define i_gen i_din.di_gen
114 #define i_gid i_din.di_gid
115 #define i_ib i_din.di_ib
116 #define i_mode i_din.di_mode
117 #define i_mtime i_din.di_mtime
118 #define i_mtimensec i_din.di_mtimensec
119 #define i_nlink i_din.di_nlink
120 #define i_rdev i_din.di_rdev
121 #define i_shortlink i_din.di_shortlink
122 #define i_size i_din.di_size
123 #define i_uid i_din.di_uid
125 /* These flags are kept in i_flag. */
126 #define IN_ACCESS 0x0001 /* Access time update request. */
127 #define IN_CHANGE 0x0002 /* Inode change time update request. */
128 #define IN_UPDATE 0x0004 /* Modification time update request. */
129 #define IN_MODIFIED 0x0008 /* Inode has been modified. */
130 #define IN_RENAME 0x0010 /* Inode is being renamed. */
131 #define IN_SHLOCK 0x0020 /* File has shared lock. */
132 #define IN_EXLOCK 0x0040 /* File has exclusive lock. */
133 #define IN_HASHED 0x0080 /* Inode is on hash list */
134 #define IN_LAZYMOD 0x0100 /* Modified, but don't write yet. */
136 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
139 * Structure used to pass around logical block paths generated by
140 * ufs_getlbns and used by truncate and bmap code.
143 ufs_daddr_t in_lbn; /* Logical block number. */
144 int in_off; /* Offset in buffer. */
145 int in_exists; /* Flag if the block exists. */
148 /* Convert between inode pointers and vnode pointers. */
149 #define VTOI(vp) ((struct inode *)(vp)->v_data)
150 #define ITOV(ip) ((ip)->i_vnode)
152 /* Determine if soft dependencies are being done */
153 #define DOINGSOFTDEP(vp) ((vp)->v_mount->mnt_flag & MNT_SOFTDEP)
154 #define DOINGASYNC(vp) ((vp)->v_mount->mnt_flag & MNT_ASYNC)
156 /* This overlays the fid structure (see mount.h). */
158 u_int16_t ufid_len; /* Length of structure. */
159 u_int16_t ufid_pad; /* Force 32-bit alignment. */
160 ino_t ufid_ino; /* File number (ino). */
161 int32_t ufid_gen; /* Generation number. */
163 #endif /* _KERNEL || _KERNEL_STRUCTURES */
165 #endif /* !_UFS_UFS_INODE_H_ */