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34 * @(#)inode.h 8.9 (Berkeley) 5/14/95
35 * $FreeBSD: src/sys/ufs/ufs/inode.h,v 1.28.2.2 2001/09/29 12:52:52 iedowse Exp $
38 #ifndef _UFS_UFS_INODE_H_
39 #define _UFS_UFS_INODE_H_
41 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
47 #include <sys/lockf.h>
53 #include <sys/queue.h>
58 * The size of a logical block number.
60 typedef long ufs_lbn_t;
63 * This must agree with the definition in <ufs/ufs/dir.h>.
65 #define doff_t int32_t
67 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
70 * The inode is used to describe each active (or recently active) file in the
71 * UFS filesystem. It is composed of two types of information. The first part
72 * is the information that is needed only while the file is active (such as
73 * the identity of the file and linkage to speed its lookup). The second part
74 * is the permanent meta-data associated with the file which is read in
75 * from the permanent dinode from long term storage when the file becomes
76 * active, and is put back when the file is no longer being used.
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 */
83 cdev_t i_dev; /* Device associated with the inode. */
84 ino_t i_number; /* The identity of the inode. */
85 int i_effnlink; /* i_nlink when I/O completes */
86 struct fs *i_fs; /* Associated filesystem */
87 struct ufs_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 uint32_t i_reclen; /* Size of found directory entry. */
99 uint32_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 (128 bytes)
105 struct ufs1_dinode i_din;
108 #define i_atime i_din.di_atime
109 #define i_atime_ext i_din.di_atime_ext
110 #define i_atimensec i_din.di_atimensec
111 #define i_blocks i_din.di_blocks
112 #define i_ctime i_din.di_ctime
113 #define i_ctime_ext i_din.di_ctime_ext
114 #define i_ctimensec i_din.di_ctimensec
115 #define i_db i_din.di_db
116 #define i_flags i_din.di_flags
117 #define i_gen i_din.di_gen
118 #define i_gid i_din.di_gid
119 #define i_ib i_din.di_ib
120 #define i_mode i_din.di_mode
121 #define i_mtime i_din.di_mtime
122 #define i_mtime_ext i_din.di_mtime_ext
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
132 /* These flags are kept in i_flag. */
133 #define IN_ACCESS 0x0001 /* Access time update request. */
134 #define IN_CHANGE 0x0002 /* Inode change time update request. */
135 #define IN_UPDATE 0x0004 /* Modification time update request. */
136 #define IN_MODIFIED 0x0008 /* Inode has been modified. */
137 #define IN_RENAME 0x0010 /* Inode is being renamed. */
138 #define IN_SHLOCK 0x0020 /* File has shared lock. */
139 #define IN_EXLOCK 0x0040 /* File has exclusive lock. */
140 #define IN_HASHED 0x0080 /* Inode is on hash list */
141 #define IN_LAZYMOD 0x0100 /* Modified, but don't write yet. */
142 #define IN_NOCOPYWRITE 0x0200 /* Special NOCOPY write */
144 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
147 * Structure used to pass around logical block paths generated by
148 * ufs_getlbns and used by truncate and bmap code.
151 ufs_daddr_t in_lbn; /* Logical block number. */
152 int in_off; /* Offset in buffer. */
155 /* Convert between inode pointers and vnode pointers. */
156 #define VTOI(vp) ((struct inode *)(vp)->v_data)
157 #define ITOV(ip) ((ip)->i_vnode)
159 /* Determine if soft dependencies are being done */
160 #define DOINGSOFTDEP(vp) ((vp)->v_mount->mnt_flag & MNT_SOFTDEP)
161 #define DOINGASYNC(vp) ((vp)->v_mount->mnt_flag & MNT_ASYNC)
163 /* This overlays the fid structure (see mount.h). */
165 uint16_t ufid_len; /* Length of structure. */
166 uint16_t ufid_pad; /* Force 32-bit alignment. */
167 ino_t ufid_ino; /* File number (ino). */
168 int32_t ufid_gen; /* Generation number. */
170 #endif /* _KERNEL || _KERNEL_STRUCTURES */
172 #endif /* !_UFS_UFS_INODE_H_ */