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inode.h (83899) inode.h (96596)
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.

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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
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.

--- 22 unchanged lines hidden (view full) ---

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: head/sys/gnu/fs/ext2fs/inode.h 83899 2001-09-24 18:29:20Z iedowse $
39 * $FreeBSD: head/sys/gnu/fs/ext2fs/inode.h 96596 2002-05-14 17:14:01Z iedowse $
40 */
41
40 */
41
42#ifndef _UFS_UFS_INODE_H_
43#define _UFS_UFS_INODE_H_
42#ifndef _SYS_GNU_EXT2FS_INODE_H_
43#define _SYS_GNU_EXT2FS_INODE_H_
44
45#include <sys/lock.h>
46#include <sys/queue.h>
44
45#include <sys/lock.h>
46#include <sys/queue.h>
47#include <ufs/ufs/dinode.h>
48
47
49/*
50 * The size of a logical block number.
51 */
52typedef long ufs_lbn_t;
48#define ROOTINO ((ino_t)2)
53
49
50#define NDADDR 12 /* Direct addresses in inode. */
51#define NIADDR 3 /* Indirect addresses in inode. */
52
54/*
55 * This must agree with the definition in <ufs/ufs/dir.h>.
56 */
57#define doff_t int32_t
58
59/*
60 * The inode is used to describe each active (or recently active) file in the
53/*
54 * This must agree with the definition in <ufs/ufs/dir.h>.
55 */
56#define doff_t int32_t
57
58/*
59 * The inode is used to describe each active (or recently active) file in the
61 * UFS filesystem. It is composed of two types of information. The first part
62 * is the information that is needed only while the file is active (such as
63 * the identity of the file and linkage to speed its lookup). The second part
64 * is the permanent meta-data associated with the file which is read in
60 * EXT2FS filesystem. It is composed of two types of information. The first
61 * part is the information that is needed only while the file is active (such
62 * as the identity of the file and linkage to speed its lookup). The second
63 * part is the permanent meta-data associated with the file which is read in
65 * from the permanent dinode from long term storage when the file becomes
66 * active, and is put back when the file is no longer being used.
67 */
68struct inode {
69 LIST_ENTRY(inode) i_hash;/* Hash chain. */
64 * from the permanent dinode from long term storage when the file becomes
65 * active, and is put back when the file is no longer being used.
66 */
67struct inode {
68 LIST_ENTRY(inode) i_hash;/* Hash chain. */
70 TAILQ_ENTRY(inode) i_nextsnap; /* snapshot file list */
71 struct vnode *i_vnode;/* Vnode associated with this inode. */
72 struct vnode *i_devvp;/* Vnode for block I/O. */
73 u_int32_t i_flag; /* flags, see below */
74 dev_t i_dev; /* Device associated with the inode. */
75 ino_t i_number; /* The identity of the inode. */
69 struct vnode *i_vnode;/* Vnode associated with this inode. */
70 struct vnode *i_devvp;/* Vnode for block I/O. */
71 u_int32_t i_flag; /* flags, see below */
72 dev_t i_dev; /* Device associated with the inode. */
73 ino_t i_number; /* The identity of the inode. */
76 int i_effnlink; /* i_nlink when I/O completes */
77
74
78 union { /* Associated filesystem. */
79 struct fs *fs; /* FFS */
80 struct ext2_sb_info *e2fs; /* EXT2FS */
81 } inode_u;
82#define i_fs inode_u.fs
83#define i_e2fs inode_u.e2fs
84 struct dquot *i_dquot[MAXQUOTAS]; /* Dquot structures. */
75 struct ext2_sb_info *i_e2fs; /* EXT2FS */
85 u_quad_t i_modrev; /* Revision level for NFS lease. */
86 struct lockf *i_lockf;/* Head of byte-level lock list. */
87 /*
88 * Side effects; used during directory lookup.
89 */
90 int32_t i_count; /* Size of free slot in directory. */
91 doff_t i_endoff; /* End of useful stuff in directory. */
92 doff_t i_diroff; /* Offset in dir, where we found last entry. */
93 doff_t i_offset; /* Offset of free space in directory. */
94 ino_t i_ino; /* Inode number of found directory. */
95 u_int32_t i_reclen; /* Size of found directory entry. */
76 u_quad_t i_modrev; /* Revision level for NFS lease. */
77 struct lockf *i_lockf;/* Head of byte-level lock list. */
78 /*
79 * Side effects; used during directory lookup.
80 */
81 int32_t i_count; /* Size of free slot in directory. */
82 doff_t i_endoff; /* End of useful stuff in directory. */
83 doff_t i_diroff; /* Offset in dir, where we found last entry. */
84 doff_t i_offset; /* Offset of free space in directory. */
85 ino_t i_ino; /* Inode number of found directory. */
86 u_int32_t i_reclen; /* Size of found directory entry. */
96 u_int32_t i_spare[3]; /* XXX actually non-spare (for ext2fs). */
97
87
98 struct dirhash *i_dirhash; /* Hashing for large directories */
99 /*
100 * The on-disk dinode itself.
101 */
102 struct dinode i_din; /* 128 bytes of the on-disk dinode. */
88 u_int32_t i_block_group;
89 u_int32_t i_next_alloc_block;
90 u_int32_t i_next_alloc_goal;
91 u_int32_t i_prealloc_block;
92 u_int32_t i_prealloc_count;
93
94 /* Fields from struct dinode in UFS. */
95 u_int16_t i_mode; /* IFMT, permissions; see below. */
96 int16_t i_nlink; /* File link count. */
97 u_int64_t i_size; /* File byte count. */
98 int32_t i_atime; /* Last access time. */
99 int32_t i_atimensec; /* Last access time. */
100 int32_t i_mtime; /* Last modified time. */
101 int32_t i_mtimensec; /* Last modified time. */
102 int32_t i_ctime; /* Last inode change time. */
103 int32_t i_ctimensec; /* Last inode change time. */
104 daddr_t i_db[NDADDR]; /* Direct disk blocks. */
105 daddr_t i_ib[NIADDR]; /* Indirect disk blocks. */
106 u_int32_t i_flags; /* Status flags (chflags). */
107 int32_t i_blocks; /* Blocks actually held. */
108 int32_t i_gen; /* Generation number. */
109 u_int32_t i_uid; /* File owner. */
110 u_int32_t i_gid; /* File group. */
103};
104
111};
112
105#define i_atime i_din.di_atime
106#define i_atimensec i_din.di_atimensec
107#define i_blocks i_din.di_blocks
108#define i_ctime i_din.di_ctime
109#define i_ctimensec i_din.di_ctimensec
110#define i_db i_din.di_db
111#define i_flags i_din.di_flags
112#define i_gen i_din.di_gen
113#define i_gid i_din.di_gid
114#define i_ib i_din.di_ib
115#define i_mode i_din.di_mode
116#define i_mtime i_din.di_mtime
117#define i_mtimensec i_din.di_mtimensec
118#define i_nlink i_din.di_nlink
119#define i_rdev i_din.di_rdev
120#define i_shortlink i_din.di_shortlink
121#define i_size i_din.di_size
122#define i_uid i_din.di_uid
113/*
114 * The di_db fields may be overlaid with other information for
115 * file types that do not have associated disk storage. Block
116 * and character devices overlay the first data block with their
117 * dev_t value. Short symbolic links place their path in the
118 * di_db area.
119 */
120#define i_shortlink i_db
121#define i_rdev i_db[0]
122#define MAXSYMLINKLEN ((NDADDR + NIADDR) * sizeof(daddr_t))
123
123
124/* File permissions. */
125#define IEXEC 0000100 /* Executable. */
126#define IWRITE 0000200 /* Writeable. */
127#define IREAD 0000400 /* Readable. */
128#define ISVTX 0001000 /* Sticky bit. */
129#define ISGID 0002000 /* Set-gid. */
130#define ISUID 0004000 /* Set-uid. */
131
132/* File types. */
133#define IFMT 0170000 /* Mask of file type. */
134#define IFIFO 0010000 /* Named pipe (fifo). */
135#define IFCHR 0020000 /* Character device. */
136#define IFDIR 0040000 /* Directory file. */
137#define IFBLK 0060000 /* Block device. */
138#define IFREG 0100000 /* Regular file. */
139#define IFLNK 0120000 /* Symbolic link. */
140#define IFSOCK 0140000 /* UNIX domain socket. */
141#define IFWHT 0160000 /* Whiteout. */
142
124/* These flags are kept in i_flag. */
125#define IN_ACCESS 0x0001 /* Access time update request. */
126#define IN_CHANGE 0x0002 /* Inode change time update request. */
127#define IN_UPDATE 0x0004 /* Modification time update request. */
128#define IN_MODIFIED 0x0008 /* Inode has been modified. */
129#define IN_RENAME 0x0010 /* Inode is being renamed. */
130#define IN_HASHED 0x0020 /* Inode is on hash list */
131#define IN_LAZYMOD 0x0040 /* Modified, but don't write yet. */
132#define IN_SPACECOUNTED 0x0080 /* Blocks to be freed in free count. */
133
134#ifdef _KERNEL
135/*
136 * Structure used to pass around logical block paths generated by
137 * ufs_getlbns and used by truncate and bmap code.
138 */
139struct indir {
143/* These flags are kept in i_flag. */
144#define IN_ACCESS 0x0001 /* Access time update request. */
145#define IN_CHANGE 0x0002 /* Inode change time update request. */
146#define IN_UPDATE 0x0004 /* Modification time update request. */
147#define IN_MODIFIED 0x0008 /* Inode has been modified. */
148#define IN_RENAME 0x0010 /* Inode is being renamed. */
149#define IN_HASHED 0x0020 /* Inode is on hash list */
150#define IN_LAZYMOD 0x0040 /* Modified, but don't write yet. */
151#define IN_SPACECOUNTED 0x0080 /* Blocks to be freed in free count. */
152
153#ifdef _KERNEL
154/*
155 * Structure used to pass around logical block paths generated by
156 * ufs_getlbns and used by truncate and bmap code.
157 */
158struct indir {
140 ufs_daddr_t in_lbn; /* Logical block number. */
159 daddr_t in_lbn; /* Logical block number. */
141 int in_off; /* Offset in buffer. */
142 int in_exists; /* Flag if the block exists. */
143};
144
145/* Convert between inode pointers and vnode pointers. */
146#define VTOI(vp) ((struct inode *)(vp)->v_data)
147#define ITOV(ip) ((ip)->i_vnode)
148
160 int in_off; /* Offset in buffer. */
161 int in_exists; /* Flag if the block exists. */
162};
163
164/* Convert between inode pointers and vnode pointers. */
165#define VTOI(vp) ((struct inode *)(vp)->v_data)
166#define ITOV(ip) ((ip)->i_vnode)
167
149/* Determine if soft dependencies are being done */
150#define DOINGSOFTDEP(vp) ((vp)->v_mount->mnt_flag & MNT_SOFTDEP)
151#define DOINGASYNC(vp) ((vp)->v_mount->mnt_flag & MNT_ASYNC)
152
153/* This overlays the fid structure (see mount.h). */
154struct ufid {
155 u_int16_t ufid_len; /* Length of structure. */
156 u_int16_t ufid_pad; /* Force 32-bit alignment. */
157 ino_t ufid_ino; /* File number (ino). */
158 int32_t ufid_gen; /* Generation number. */
159};
160#endif /* _KERNEL */
161
168/* This overlays the fid structure (see mount.h). */
169struct ufid {
170 u_int16_t ufid_len; /* Length of structure. */
171 u_int16_t ufid_pad; /* Force 32-bit alignment. */
172 ino_t ufid_ino; /* File number (ino). */
173 int32_t ufid_gen; /* Generation number. */
174};
175#endif /* _KERNEL */
176
162#endif /* !_UFS_UFS_INODE_H_ */
177#endif /* !_SYS_GNU_EXT2FS_INODE_H_ */