FreeBSD/Linux Kernel Cross Reference
sys/ufs/ufs/dinode.h
1 /* $OpenBSD: dinode.h,v 1.19 2020/05/28 15:48:29 otto Exp $ */
2 /* $NetBSD: dinode.h,v 1.7 1995/06/15 23:22:48 cgd Exp $ */
3
4 /*
5 * Copyright (c) 1982, 1989, 1993
6 * The Regents of the University of California. All rights reserved.
7 * (c) UNIX System Laboratories, Inc.
8 * All or some portions of this file are derived from material licensed
9 * to the University of California by American Telephone and Telegraph
10 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
11 * the permission of UNIX System Laboratories, Inc.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
36 *
37 * @(#)dinode.h 8.9 (Berkeley) 3/29/95
38 */
39
40 #ifndef _UFS_DINODE_H_
41 #define _UFS_DINODE_H_
42
43 /*
44 * UFS directories use 32bit inode numbers internally, regardless
45 * of what the system on top of it uses.
46 */
47 typedef u_int32_t ufsino_t;
48
49 /*
50 * The root inode is the root of the file system. Inode 0 can't be used for
51 * normal purposes and historically bad blocks were linked to inode 1, thus
52 * the root inode is 2. (Inode 1 is no longer used for this purpose, however
53 * numerous dump tapes make this assumption, so we are stuck with it).
54 */
55 #define ROOTINO ((ufsino_t)2)
56
57 /*
58 * A dinode contains all the meta-data associated with a UFS file.
59 * This structure defines the on-disk format of a dinode. Since
60 * this structure describes an on-disk structure, all its fields
61 * are defined by types with precise widths.
62 */
63 #define NXADDR 2 /* External addresses in inode */
64 #define NDADDR 12 /* Direct addresses in inode. */
65 #define NIADDR 3 /* Indirect addresses in inode. */
66
67 struct ufs1_dinode {
68 u_int16_t di_mode; /* 0: IFMT, permissions; see below. */
69 int16_t di_nlink; /* 2: File link count. */
70 union {
71 u_int16_t oldids[2]; /* 4: Ffs: old user and group ids. */
72 u_int32_t inumber; /* 4: Lfs: inode number. */
73 } di_u;
74 u_int64_t di_size; /* 8: File byte count. */
75 int32_t di_atime; /* 16: Last access time. */
76 int32_t di_atimensec; /* 20: Last access time. */
77 int32_t di_mtime; /* 24: Last modified time. */
78 int32_t di_mtimensec; /* 28: Last modified time. */
79 int32_t di_ctime; /* 32: Last inode change time. */
80 int32_t di_ctimensec; /* 36: Last inode change time. */
81 int32_t di_db[NDADDR]; /* 40: Direct disk blocks. */
82 int32_t di_ib[NIADDR]; /* 88: Indirect disk blocks. */
83 u_int32_t di_flags; /* 100: Status flags (chflags). */
84 int32_t di_blocks; /* 104: Blocks actually held. */
85 u_int32_t di_gen; /* 108: Generation number. */
86 u_int32_t di_uid; /* 112: File owner. */
87 u_int32_t di_gid; /* 116: File group. */
88 int32_t di_spare[2]; /* 120: Reserved; currently unused */
89 };
90
91 struct ufs2_dinode {
92 u_int16_t di_mode; /* 0: IFMT, permissions; see below. */
93 int16_t di_nlink; /* 2: File link count. */
94 u_int32_t di_uid; /* 4: File owner. */
95 u_int32_t di_gid; /* 8: File group. */
96 u_int32_t di_blksize; /* 12: Inode blocksize. */
97 u_int64_t di_size; /* 16: File byte count. */
98 u_int64_t di_blocks; /* 24: Bytes actually held. */
99 int64_t di_atime; /* 32: Last access time. */
100 int64_t di_mtime; /* 40: Last modified time. */
101 int64_t di_ctime; /* 48: Last inode change time. */
102 int64_t di_birthtime; /* 56: Inode creation time. */
103 int32_t di_mtimensec; /* 64: Last modified time. */
104 int32_t di_atimensec; /* 68: Last access time. */
105 int32_t di_ctimensec; /* 72: Last inode change time. */
106 int32_t di_birthnsec; /* 76: Inode creation time. */
107 int32_t di_gen; /* 80: Generation number. */
108 u_int32_t di_kernflags; /* 84: Kernel flags. */
109 u_int32_t di_flags; /* 88: Status flags (chflags). */
110 int32_t di_extsize; /* 92: External attributes block. */
111 int64_t di_extb[NXADDR];/* 96: External attributes block. */
112 int64_t di_db[NDADDR]; /* 112: Direct disk blocks. */
113 int64_t di_ib[NIADDR]; /* 208: Indirect disk blocks. */
114 int64_t di_spare[3]; /* 232: Reserved; currently unused */
115 };
116
117 /*
118 * The di_db fields may be overlaid with other information for
119 * file types that do not have associated disk storage. Block
120 * and character devices overlay the first data block with their
121 * dev_t value. Short symbolic links place their path in the
122 * di_db area.
123 */
124 #define di_inumber di_u.inumber
125 #define di_ogid di_u.oldids[1]
126 #define di_ouid di_u.oldids[0]
127 #define di_rdev di_db[0]
128 #define di_shortlink di_db
129
130 #define MAXSYMLINKLEN_UFS1 ((NDADDR + NIADDR) * sizeof(int32_t))
131 #define MAXSYMLINKLEN_UFS2 ((NDADDR + NIADDR) * sizeof(int64_t))
132
133 #define MAXSYMLINKLEN(ip) \
134 ((ip)->i_ump->um_fstype == UM_UFS1) ? \
135 MAXSYMLINKLEN_UFS1 : MAXSYMLINKLEN_UFS2
136
137 /* File permissions. */
138 #define IEXEC 0000100 /* Executable. */
139 #define IWRITE 0000200 /* Writeable. */
140 #define IREAD 0000400 /* Readable. */
141 #define ISVTX 0001000 /* Sticky bit. */
142 #define ISGID 0002000 /* Set-gid. */
143 #define ISUID 0004000 /* Set-uid. */
144
145 /* File types. */
146 #define IFMT 0170000 /* Mask of file type. */
147 #define IFIFO 0010000 /* Named pipe (fifo). */
148 #define IFCHR 0020000 /* Character device. */
149 #define IFDIR 0040000 /* Directory file. */
150 #define IFBLK 0060000 /* Block device. */
151 #define IFREG 0100000 /* Regular file. */
152 #define IFLNK 0120000 /* Symbolic link. */
153 #define IFSOCK 0140000 /* UNIX domain socket. */
154 #define IFWHT 0160000 /* Whiteout. */
155
156 #endif /* _UFS_DINODE_H_ */
Cache object: 752c9feaae8c98655fb0de4505e682f1
|