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 * 4. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * @(#)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.
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 * 4. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * @(#)inode.h 8.9 (Berkeley) 5/14/95
|
53 * The inode is used to describe each active (or recently active) file in the
54 * EXT2FS filesystem. It is composed of two types of information. The first
55 * part is the information that is needed only while the file is active (such
56 * as the identity of the file and linkage to speed its lookup). The second
57 * part is the permanent meta-data associated with the file which is read in
58 * from the permanent dinode from long term storage when the file becomes
59 * active, and is put back when the file is no longer being used.
60 */
61struct inode {
62 struct vnode *i_vnode;/* Vnode associated with this inode. */
63 struct ext2mount *i_ump;
64 uint32_t i_flag; /* flags, see below */
65 ino_t i_number; /* The identity of the inode. */
66
67 struct m_ext2fs *i_e2fs; /* EXT2FS */
68 u_quad_t i_modrev; /* Revision level for NFS lease. */
69 /*
70 * Side effects; used during directory lookup.
71 */
72 int32_t i_count; /* Size of free slot in directory. */
73 doff_t i_endoff; /* End of useful stuff in directory. */
74 doff_t i_diroff; /* Offset in dir, where we found last entry. */
75 doff_t i_offset; /* Offset of free space in directory. */
76
77 uint32_t i_block_group;
78 uint32_t i_next_alloc_block;
79 uint32_t i_next_alloc_goal;
80
81 /* Fields from struct dinode in UFS. */
82 uint16_t i_mode; /* IFMT, permissions; see below. */
83 int16_t i_nlink; /* File link count. */
84 uint64_t i_size; /* File byte count. */
85 int32_t i_atime; /* Last access time. */
86 int32_t i_mtime; /* Last modified time. */
87 int32_t i_ctime; /* Last inode change time. */
88 int32_t i_birthtime; /* Inode creation time. */
89 int32_t i_mtimensec; /* Last modified time. */
90 int32_t i_atimensec; /* Last access time. */
91 int32_t i_ctimensec; /* Last inode change time. */
92 int32_t i_birthnsec; /* Inode creation time. */
93 uint32_t i_db[NDADDR]; /* Direct disk blocks. */
94 uint32_t i_ib[NIADDR]; /* Indirect disk blocks. */
95 uint32_t i_flags; /* Status flags (chflags). */
96 uint32_t i_blocks; /* Blocks actually held. */
97 uint32_t i_gen; /* Generation number. */
98 uint32_t i_uid; /* File owner. */
99 uint32_t i_gid; /* File group. */
100};
101
102/*
103 * The di_db fields may be overlaid with other information for
104 * file types that do not have associated disk storage. Block
105 * and character devices overlay the first data block with their
106 * dev_t value. Short symbolic links place their path in the
107 * di_db area.
108 */
109#define i_shortlink i_db
110#define i_rdev i_db[0]
111
112/* File permissions. */
113#define IEXEC 0000100 /* Executable. */
114#define IWRITE 0000200 /* Writeable. */
115#define IREAD 0000400 /* Readable. */
116#define ISVTX 0001000 /* Sticky bit. */
117#define ISGID 0002000 /* Set-gid. */
118#define ISUID 0004000 /* Set-uid. */
119
120/* File types. */
121#define IFMT 0170000 /* Mask of file type. */
122#define IFIFO 0010000 /* Named pipe (fifo). */
123#define IFCHR 0020000 /* Character device. */
124#define IFDIR 0040000 /* Directory file. */
125#define IFBLK 0060000 /* Block device. */
126#define IFREG 0100000 /* Regular file. */
127#define IFLNK 0120000 /* Symbolic link. */
128#define IFSOCK 0140000 /* UNIX domain socket. */
129#define IFWHT 0160000 /* Whiteout. */
130
131/* These flags are kept in i_flag. */
132#define IN_ACCESS 0x0001 /* Access time update request. */
133#define IN_CHANGE 0x0002 /* Inode change time update request. */
134#define IN_UPDATE 0x0004 /* Modification time update request. */
135#define IN_MODIFIED 0x0008 /* Inode has been modified. */
136#define IN_RENAME 0x0010 /* Inode is being renamed. */
137#define IN_HASHED 0x0020 /* Inode is on hash list */
138#define IN_LAZYMOD 0x0040 /* Modified, but don't write yet. */
139#define IN_SPACECOUNTED 0x0080 /* Blocks to be freed in free count. */
140#define IN_LAZYACCESS 0x0100 /* Process IN_ACCESS after the
141 suspension finished */
142
143#define i_devvp i_ump->um_devvp
144
145#ifdef _KERNEL
146/*
147 * Structure used to pass around logical block paths generated by
148 * ext2_getlbns and used by truncate and bmap code.
149 */
150struct indir {
| 58 * The inode is used to describe each active (or recently active) file in the
59 * EXT2FS filesystem. It is composed of two types of information. The first
60 * part is the information that is needed only while the file is active (such
61 * as the identity of the file and linkage to speed its lookup). The second
62 * part is the permanent meta-data associated with the file which is read in
63 * from the permanent dinode from long term storage when the file becomes
64 * active, and is put back when the file is no longer being used.
65 */
66struct inode {
67 struct vnode *i_vnode;/* Vnode associated with this inode. */
68 struct ext2mount *i_ump;
69 uint32_t i_flag; /* flags, see below */
70 ino_t i_number; /* The identity of the inode. */
71
72 struct m_ext2fs *i_e2fs; /* EXT2FS */
73 u_quad_t i_modrev; /* Revision level for NFS lease. */
74 /*
75 * Side effects; used during directory lookup.
76 */
77 int32_t i_count; /* Size of free slot in directory. */
78 doff_t i_endoff; /* End of useful stuff in directory. */
79 doff_t i_diroff; /* Offset in dir, where we found last entry. */
80 doff_t i_offset; /* Offset of free space in directory. */
81
82 uint32_t i_block_group;
83 uint32_t i_next_alloc_block;
84 uint32_t i_next_alloc_goal;
85
86 /* Fields from struct dinode in UFS. */
87 uint16_t i_mode; /* IFMT, permissions; see below. */
88 int16_t i_nlink; /* File link count. */
89 uint64_t i_size; /* File byte count. */
90 int32_t i_atime; /* Last access time. */
91 int32_t i_mtime; /* Last modified time. */
92 int32_t i_ctime; /* Last inode change time. */
93 int32_t i_birthtime; /* Inode creation time. */
94 int32_t i_mtimensec; /* Last modified time. */
95 int32_t i_atimensec; /* Last access time. */
96 int32_t i_ctimensec; /* Last inode change time. */
97 int32_t i_birthnsec; /* Inode creation time. */
98 uint32_t i_db[NDADDR]; /* Direct disk blocks. */
99 uint32_t i_ib[NIADDR]; /* Indirect disk blocks. */
100 uint32_t i_flags; /* Status flags (chflags). */
101 uint32_t i_blocks; /* Blocks actually held. */
102 uint32_t i_gen; /* Generation number. */
103 uint32_t i_uid; /* File owner. */
104 uint32_t i_gid; /* File group. */
105};
106
107/*
108 * The di_db fields may be overlaid with other information for
109 * file types that do not have associated disk storage. Block
110 * and character devices overlay the first data block with their
111 * dev_t value. Short symbolic links place their path in the
112 * di_db area.
113 */
114#define i_shortlink i_db
115#define i_rdev i_db[0]
116
117/* File permissions. */
118#define IEXEC 0000100 /* Executable. */
119#define IWRITE 0000200 /* Writeable. */
120#define IREAD 0000400 /* Readable. */
121#define ISVTX 0001000 /* Sticky bit. */
122#define ISGID 0002000 /* Set-gid. */
123#define ISUID 0004000 /* Set-uid. */
124
125/* File types. */
126#define IFMT 0170000 /* Mask of file type. */
127#define IFIFO 0010000 /* Named pipe (fifo). */
128#define IFCHR 0020000 /* Character device. */
129#define IFDIR 0040000 /* Directory file. */
130#define IFBLK 0060000 /* Block device. */
131#define IFREG 0100000 /* Regular file. */
132#define IFLNK 0120000 /* Symbolic link. */
133#define IFSOCK 0140000 /* UNIX domain socket. */
134#define IFWHT 0160000 /* Whiteout. */
135
136/* These flags are kept in i_flag. */
137#define IN_ACCESS 0x0001 /* Access time update request. */
138#define IN_CHANGE 0x0002 /* Inode change time update request. */
139#define IN_UPDATE 0x0004 /* Modification time update request. */
140#define IN_MODIFIED 0x0008 /* Inode has been modified. */
141#define IN_RENAME 0x0010 /* Inode is being renamed. */
142#define IN_HASHED 0x0020 /* Inode is on hash list */
143#define IN_LAZYMOD 0x0040 /* Modified, but don't write yet. */
144#define IN_SPACECOUNTED 0x0080 /* Blocks to be freed in free count. */
145#define IN_LAZYACCESS 0x0100 /* Process IN_ACCESS after the
146 suspension finished */
147
148#define i_devvp i_ump->um_devvp
149
150#ifdef _KERNEL
151/*
152 * Structure used to pass around logical block paths generated by
153 * ext2_getlbns and used by truncate and bmap code.
154 */
155struct indir {
|