disklabel64 UFS+HAMMER boot support (was previously just HAMMER boot support)
[dragonfly.git] / sys / boot / common / dinode.h
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1/*
2 * Copyright (c) 2002 Networks Associates Technology, Inc.
3 * All rights reserved.
4 *
5 * This software was developed for the FreeBSD Project by Marshall
6 * Kirk McKusick and Network Associates Laboratories, the Security
7 * Research Division of Network Associates, Inc. under DARPA/SPAWAR
8 * contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS
9 * research program
10 *
11 * Copyright (c) 1982, 1989, 1993
12 * The Regents of the University of California. All rights reserved.
13 * (c) UNIX System Laboratories, Inc.
14 * All or some portions of this file are derived from material licensed
15 * to the University of California by American Telephone and Telegraph
16 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
17 * the permission of UNIX System Laboratories, Inc.
18 *
19 * Redistribution and use in source and binary forms, with or without
20 * modification, are permitted provided that the following conditions
21 * are met:
22 * 1. Redistributions of source code must retain the above copyright
23 * notice, this list of conditions and the following disclaimer.
24 * 2. Redistributions in binary form must reproduce the above copyright
25 * notice, this list of conditions and the following disclaimer in the
26 * documentation and/or other materials provided with the distribution.
27 * 3. The names of the authors may not be used to endorse or promote
28 * products derived from this software without specific prior written
29 * permission.
30 *
31 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
32 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
33 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
34 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
35 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
39 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
40 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
41 * SUCH DAMAGE.
42 *
43 * @(#)dinode.h 8.3 (Berkeley) 1/21/94
44 * $FreeBSD: src/sys/ufs/ufs/dinode.h,v 1.11 2002/07/16 22:36:00 mckusick Exp $
b13267a5 45 * $DragonFly: src/sys/boot/common/dinode.h,v 1.2 2006/09/10 01:26:30 dillon Exp $
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46 */
47
48#ifndef _UFS_UFS_DINODE_H_
49#define _UFS_UFS_DINODE_H_
50
51/*
52 * The root inode is the root of the filesystem. Inode 0 can't be used for
53 * normal purposes and historically bad blocks were linked to inode 1, thus
54 * the root inode is 2. (Inode 1 is no longer used for this purpose, however
55 * numerous dump tapes make this assumption, so we are stuck with it).
56 */
57#define ROOTINO ((ino_t)2)
58
59/*
60 * The Whiteout inode# is a dummy non-zero inode number which will
61 * never be allocated to a real file. It is used as a place holder
62 * in the directory entry which has been tagged as a DT_W entry.
63 * See the comments about ROOTINO above.
64 */
65#define WINO ((ino_t)1)
66
67/*
68 * The size of physical and logical block numbers and time fields in UFS.
69 */
70typedef int32_t ufs1_daddr_t;
71typedef int64_t ufs2_daddr_t;
72typedef int64_t ufs_lbn_t;
73typedef int64_t ufs_time_t;
d64b2e33 74typedef uint32_t ufs_ino_t;
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75
76/* File permissions. */
77#define IEXEC 0000100 /* Executable. */
78#define IWRITE 0000200 /* Writeable. */
79#define IREAD 0000400 /* Readable. */
80#define ISVTX 0001000 /* Sticky bit. */
81#define ISGID 0002000 /* Set-gid. */
82#define ISUID 0004000 /* Set-uid. */
83
84/* File types. */
85#define IFMT 0170000 /* Mask of file type. */
86#define IFIFO 0010000 /* Named pipe (fifo). */
87#define IFCHR 0020000 /* Character device. */
88#define IFDIR 0040000 /* Directory file. */
89#define IFBLK 0060000 /* Block device. */
90#define IFREG 0100000 /* Regular file. */
91#define IFLNK 0120000 /* Symbolic link. */
92#define IFSOCK 0140000 /* UNIX domain socket. */
93#define IFWHT 0160000 /* Whiteout. */
94
95/*
96 * A dinode contains all the meta-data associated with a UFS2 file.
97 * This structure defines the on-disk format of a dinode. Since
98 * this structure describes an on-disk structure, all its fields
99 * are defined by types with precise widths.
100 */
101
102#define NXADDR 2 /* External addresses in inode. */
103#define NDADDR 12 /* Direct addresses in inode. */
104#define NIADDR 3 /* Indirect addresses in inode. */
105
106struct ufs2_dinode {
107 u_int16_t di_mode; /* 0: IFMT, permissions; see below. */
108 int16_t di_nlink; /* 2: File link count. */
109 u_int32_t di_uid; /* 4: File owner. */
110 u_int32_t di_gid; /* 8: File group. */
111 u_int32_t di_blksize; /* 12: Inode blocksize. */
112 u_int64_t di_size; /* 16: File byte count. */
113 u_int64_t di_blocks; /* 24: Bytes actually held. */
114 ufs_time_t di_atime; /* 32: Last access time. */
115 ufs_time_t di_mtime; /* 40: Last modified time. */
116 ufs_time_t di_ctime; /* 48: Last inode change time. */
117 ufs_time_t di_birthtime; /* 56: Inode creation time. */
118 int32_t di_mtimensec; /* 64: Last modified time. */
119 int32_t di_atimensec; /* 68: Last access time. */
120 int32_t di_ctimensec; /* 72: Last inode change time. */
121 int32_t di_birthnsec; /* 76: Inode creation time. */
122 int32_t di_gen; /* 80: Generation number. */
123 u_int32_t di_kernflags; /* 84: Kernel flags. */
124 u_int32_t di_flags; /* 88: Status flags (chflags). */
125 int32_t di_extsize; /* 92: External attributes block. */
126 ufs2_daddr_t di_extb[NXADDR];/* 96: External attributes block. */
127 ufs2_daddr_t di_db[NDADDR]; /* 112: Direct disk blocks. */
128 ufs2_daddr_t di_ib[NIADDR]; /* 208: Indirect disk blocks. */
129 int64_t di_spare[3]; /* 232: Reserved; currently unused */
130};
131
132/*
133 * The di_db fields may be overlaid with other information for
134 * file types that do not have associated disk storage. Block
135 * and character devices overlay the first data block with their
b13267a5 136 * cdev_t value. Short symbolic links place their path in the
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137 * di_db area.
138 */
139#define di_rdev di_db[0]
140
141/*
142 * A UFS1 dinode contains all the meta-data associated with a UFS1 file.
143 * This structure defines the on-disk format of a UFS1 dinode. Since
144 * this structure describes an on-disk structure, all its fields
145 * are defined by types with precise widths.
146 */
147struct ufs1_dinode {
148 u_int16_t di_mode; /* 0: IFMT, permissions; see below. */
149 int16_t di_nlink; /* 2: File link count. */
150 union {
151 u_int16_t oldids[2]; /* 4: Ffs: old user and group ids. */
152 } di_u;
153 u_int64_t di_size; /* 8: File byte count. */
154 int32_t di_atime; /* 16: Last access time. */
155 int32_t di_atimensec; /* 20: Last access time. */
156 int32_t di_mtime; /* 24: Last modified time. */
157 int32_t di_mtimensec; /* 28: Last modified time. */
158 int32_t di_ctime; /* 32: Last inode change time. */
159 int32_t di_ctimensec; /* 36: Last inode change time. */
160 ufs1_daddr_t di_db[NDADDR]; /* 40: Direct disk blocks. */
161 ufs1_daddr_t di_ib[NIADDR]; /* 88: Indirect disk blocks. */
162 u_int32_t di_flags; /* 100: Status flags (chflags). */
163 int32_t di_blocks; /* 104: Blocks actually held. */
164 int32_t di_gen; /* 108: Generation number. */
165 u_int32_t di_uid; /* 112: File owner. */
166 u_int32_t di_gid; /* 116: File group. */
167 int32_t di_spare[2]; /* 120: Reserved; currently unused */
168};
169#define di_ogid di_u.oldids[1]
170#define di_ouid di_u.oldids[0]
171
172#endif /* _UFS_UFS_DINODE_H_ */