1 | /*␊ |
2 | * Copyright (c) 2000-2008 Apple, Inc. All rights reserved.␊ |
3 | *␊ |
4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@␊ |
5 | * ␊ |
6 | * This file contains Original Code and/or Modifications of Original Code␊ |
7 | * as defined in and that are subject to the Apple Public Source License␊ |
8 | * Version 2.0 (the 'License'). You may not use this file except in␊ |
9 | * compliance with the License. The rights granted to you under the License␊ |
10 | * may not be used to create, or enable the creation or redistribution of,␊ |
11 | * unlawful or unlicensed copies of an Apple operating system, or to␊ |
12 | * circumvent, violate, or enable the circumvention or violation of, any␊ |
13 | * terms of an Apple operating system software license agreement.␊ |
14 | * ␊ |
15 | * Please obtain a copy of the License at␊ |
16 | * http://www.opensource.apple.com/apsl/ and read it before using this file.␊ |
17 | * ␊ |
18 | * The Original Code and all software distributed under the License are␊ |
19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER␊ |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,␊ |
21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,␊ |
22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.␊ |
23 | * Please see the License for the specific language governing rights and␊ |
24 | * limitations under the License.␊ |
25 | * ␊ |
26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@␊ |
27 | */␊ |
28 | /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */␊ |
29 | /*␊ |
30 | * Copyright (c) 1982, 1989, 1993␊ |
31 | *␉The Regents of the University of California. All rights reserved.␊ |
32 | * (c) UNIX System Laboratories, Inc.␊ |
33 | * All or some portions of this file are derived from material licensed␊ |
34 | * to the University of California by American Telephone and Telegraph␊ |
35 | * Co. or Unix System Laboratories, Inc. and are reproduced herein with␊ |
36 | * the permission of UNIX System Laboratories, Inc.␊ |
37 | *␊ |
38 | * Redistribution and use in source and binary forms, with or without␊ |
39 | * modification, are permitted provided that the following conditions␊ |
40 | * are met:␊ |
41 | * 1. Redistributions of source code must retain the above copyright␊ |
42 | * notice, this list of conditions and the following disclaimer.␊ |
43 | * 2. Redistributions in binary form must reproduce the above copyright␊ |
44 | * notice, this list of conditions and the following disclaimer in the␊ |
45 | * documentation and/or other materials provided with the distribution.␊ |
46 | * 3. All advertising materials mentioning features or use of this software␊ |
47 | * must display the following acknowledgement:␊ |
48 | *␉This product includes software developed by the University of␊ |
49 | *␉California, Berkeley and its contributors.␊ |
50 | * 4. Neither the name of the University nor the names of its contributors␊ |
51 | * may be used to endorse or promote products derived from this software␊ |
52 | * without specific prior written permission.␊ |
53 | *␊ |
54 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND␊ |
55 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE␊ |
56 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE␊ |
57 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE␊ |
58 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL␊ |
59 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS␊ |
60 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)␊ |
61 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT␊ |
62 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY␊ |
63 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF␊ |
64 | * SUCH DAMAGE.␊ |
65 | *␊ |
66 | *␉@(#)dinode.h␉8.9 (Berkeley) 3/29/95␊ |
67 | */␊ |
68 | #ifndef _UFS_DINODE_H_␊ |
69 | #define _UFS_DINODE_H_␊ |
70 | ␊ |
71 | ␊ |
72 | #ifdef __APPLE_API_UNSTABLE␊ |
73 | /*␊ |
74 | * The root inode is the root of the file system. Inode 0 can't be used for␊ |
75 | * normal purposes and historically bad blocks were linked to inode 1, thus␊ |
76 | * the root inode is 2. (Inode 1 is no longer used for this purpose, however␊ |
77 | * numerous dump tapes make this assumption, so we are stuck with it).␊ |
78 | */␊ |
79 | #define␉ROOTINO␉((ino_t)2)␊ |
80 | ␊ |
81 | /*␊ |
82 | * The Whiteout inode# is a dummy non-zero inode number which will␊ |
83 | * never be allocated to a real file. It is used as a place holder␊ |
84 | * in the directory entry which has been tagged as a DT_W entry.␊ |
85 | * See the comments about ROOTINO above.␊ |
86 | */␊ |
87 | #define␉WINO␉((ino_t)1)␊ |
88 | ␊ |
89 | /*␊ |
90 | * A dinode contains all the meta-data associated with a UFS file.␊ |
91 | * This structure defines the on-disk format of a dinode. Since␊ |
92 | * this structure describes an on-disk structure, all its fields␊ |
93 | * are defined by types with precise widths.␊ |
94 | */␊ |
95 | ␊ |
96 | #define␉NDADDR␉12␉␉␉/* Direct addresses in inode. */␊ |
97 | #define␉NIADDR␉3␉␉␉/* Indirect addresses in inode. */␊ |
98 | ␊ |
99 | typedef int32_t ␉ufs_daddr_t;␊ |
100 | ␊ |
101 | struct dinode {␊ |
102 | ␉u_int16_t␉di_mode;␉/* 0: IFMT, permissions; see below. */␊ |
103 | ␉int16_t␉␉di_nlink;␉/* 2: File link count. */␊ |
104 | ␉union {␊ |
105 | ␉␉u_int16_t oldids[2];␉/* 4: Ffs: old user and group ids. */␊ |
106 | ␉␉int32_t␉ inumber;␉/* 4: Lfs: inode number. */␊ |
107 | ␉} di_u;␊ |
108 | ␉u_int64_t␉di_size;␉/* 8: File byte count. */␊ |
109 | ␉int32_t␉␉di_atime;␉/* 16: Last access time. */␊ |
110 | ␉int32_t␉␉di_atimensec;␉/* 20: Last access time. */␊ |
111 | ␉int32_t␉␉di_mtime;␉/* 24: Last modified time. */␊ |
112 | ␉int32_t␉␉di_mtimensec;␉/* 28: Last modified time. */␊ |
113 | ␉int32_t␉␉di_ctime;␉/* 32: Last inode change time. */␊ |
114 | ␉int32_t␉␉di_ctimensec;␉/* 36: Last inode change time. */␊ |
115 | ␉ufs_daddr_t␉di_db[NDADDR];␉/* 40: Direct disk blocks. */␊ |
116 | ␉ufs_daddr_t␉di_ib[NIADDR];␉/* 88: Indirect disk blocks. */␊ |
117 | ␉u_int32_t␉di_flags;␉/* 100: Status flags (chflags). */␊ |
118 | ␉u_int32_t␉di_blocks;␉/* 104: Blocks actually held. */␊ |
119 | ␉int32_t␉␉di_gen;␉␉/* 108: Generation number. */␊ |
120 | ␉u_int32_t␉di_uid;␉␉/* 112: File owner. */␊ |
121 | ␉u_int32_t␉di_gid;␉␉/* 116: File group. */␊ |
122 | ␉int32_t␉␉di_spare[2];␉/* 120: Reserved; currently unused */␊ |
123 | } __attribute__((packed,aligned(4)));␊ |
124 | ␊ |
125 | /*␊ |
126 | * The di_db fields may be overlaid with other information for␊ |
127 | * file types that do not have associated disk storage. Block␊ |
128 | * and character devices overlay the first data block with their␊ |
129 | * dev_t value. Short symbolic links place their path in the␊ |
130 | * di_db area.␊ |
131 | */␊ |
132 | #define␉di_inumber␉di_u.inumber␊ |
133 | #define␉di_ogid␉␉di_u.oldids[1]␊ |
134 | #define␉di_ouid␉␉di_u.oldids[0]␊ |
135 | #define␉di_rdev␉␉di_db[0]␊ |
136 | #define␉di_shortlink␉di_db␊ |
137 | #define␉MAXSYMLINKLEN␉((NDADDR + NIADDR) * sizeof(ufs_daddr_t))␊ |
138 | ␊ |
139 | /* File permissions. */␊ |
140 | #define␉IEXEC␉␉0000100␉␉/* Executable. */␊ |
141 | #define␉IWRITE␉␉0000200␉␉/* Writeable. */␊ |
142 | #define␉IREAD␉␉0000400␉␉/* Readable. */␊ |
143 | #define␉ISVTX␉␉0001000␉␉/* Sticky bit. */␊ |
144 | #define␉ISGID␉␉0002000␉␉/* Set-gid. */␊ |
145 | #define␉ISUID␉␉0004000␉␉/* Set-uid. */␊ |
146 | ␊ |
147 | /* File types. */␊ |
148 | #define␉IFMT␉␉0170000␉␉/* Mask of file type. */␊ |
149 | #define␉IFIFO␉␉0010000␉␉/* Named pipe (fifo). */␊ |
150 | #define␉IFCHR␉␉0020000␉␉/* Character device. */␊ |
151 | #define␉IFDIR␉␉0040000␉␉/* Directory file. */␊ |
152 | #define␉IFBLK␉␉0060000␉␉/* Block device. */␊ |
153 | #define␉IFREG␉␉0100000␉␉/* Regular file. */␊ |
154 | #define␉IFLNK␉␉0120000␉␉/* Symbolic link. */␊ |
155 | #define␉IFSOCK␉␉0140000␉␉/* UNIX domain socket. */␊ |
156 | #define␉IFWHT␉␉0160000␉␉/* Whiteout. */␊ |
157 | ␊ |
158 | #endif /* __APPLE_API_UNSTABLE */␊ |
159 | #endif /* ! _UFS_DINODE_H_ */␊ |
160 | |