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1.1 root 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: * Redistribution and use in source and binary forms, with or without
12: * modification, are permitted provided that the following conditions
13: * are met:
14: * 1. Redistributions of source code must retain the above copyright
15: * notice, this list of conditions and the following disclaimer.
16: * 2. Redistributions in binary form must reproduce the above copyright
17: * notice, this list of conditions and the following disclaimer in the
18: * documentation and/or other materials provided with the distribution.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: *
32: * Copyright (c) 1982, 1989, 1993
33: * The Regents of the University of California. All rights reserved.
34: * (c) UNIX System Laboratories, Inc.
35: * All or some portions of this file are derived from material licensed
36: * to the University of California by American Telephone and Telegraph
37: * Co. or Unix System Laboratories, Inc. and are reproduced herein with
38: * the permission of UNIX System Laboratories, Inc.
39: *
40: * Redistribution and use in source and binary forms, with or without
41: * modification, are permitted provided that the following conditions
42: * are met:
43: * 1. Redistributions of source code must retain the above copyright
44: * notice, this list of conditions and the following disclaimer.
45: * 2. Redistributions in binary form must reproduce the above copyright
46: * notice, this list of conditions and the following disclaimer in the
47: * documentation and/or other materials provided with the distribution.
48: * 3. The names of the authors may not be used to endorse or promote
49: * products derived from this software without specific prior written
50: * permission.
51: *
52: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
53: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
54: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
55: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
56: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
57: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
58: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
59: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
60: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
61: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
62: * SUCH DAMAGE.
63: *
64: * @(#)dinode.h 8.3 (Berkeley) 1/21/94
65: * $FreeBSD: src/sys/ufs/ufs/dinode.h,v 1.13.2.1 2005/01/31 23:27:01 imp Exp $
66: */
67:
68: #ifndef _UFS_UFS_DINODE_H_
69: #define _UFS_UFS_DINODE_H_
70:
71: /*
72: * The root inode is the root of the filesystem. Inode 0 can't be used for
73: * normal purposes and historically bad blocks were linked to inode 1, thus
74: * the root inode is 2. (Inode 1 is no longer used for this purpose, however
75: * numerous dump tapes make this assumption, so we are stuck with it).
76: */
77: #define ROOTINO ((ino_t)2)
78:
79: /*
80: * The Whiteout inode# is a dummy non-zero inode number which will
81: * never be allocated to a real file. It is used as a place holder
82: * in the directory entry which has been tagged as a DT_W entry.
83: * See the comments about ROOTINO above.
84: */
85: #define WINO ((ino_t)1)
86:
87: /*
88: * The size of physical and logical block numbers and time fields in UFS.
89: */
90: typedef int32_t ufs1_daddr_t;
91: typedef int64_t ufs2_daddr_t;
92: typedef int64_t ufs_lbn_t;
93: typedef int64_t ufs_time_t;
94:
95: /* File permissions. */
96: #define IEXEC 0000100 /* Executable. */
97: #define IWRITE 0000200 /* Writeable. */
98: #define IREAD 0000400 /* Readable. */
99: #define ISVTX 0001000 /* Sticky bit. */
100: #define ISGID 0002000 /* Set-gid. */
101: #define ISUID 0004000 /* Set-uid. */
102:
103: /* File types. */
104: #define IFMT 0170000 /* Mask of file type. */
105: #define IFIFO 0010000 /* Named pipe (fifo). */
106: #define IFCHR 0020000 /* Character device. */
107: #define IFDIR 0040000 /* Directory file. */
108: #define IFBLK 0060000 /* Block device. */
109: #define IFREG 0100000 /* Regular file. */
110: #define IFLNK 0120000 /* Symbolic link. */
111: #define IFSOCK 0140000 /* UNIX domain socket. */
112: #define IFWHT 0160000 /* Whiteout. */
113:
114: /*
115: * A dinode contains all the meta-data associated with a UFS2 file.
116: * This structure defines the on-disk format of a dinode. Since
117: * this structure describes an on-disk structure, all its fields
118: * are defined by types with precise widths.
119: */
120:
121: #define NXADDR 2 /* External addresses in inode. */
122: #define NDADDR 12 /* Direct addresses in inode. */
123: #define NIADDR 3 /* Indirect addresses in inode. */
124:
125: struct ufs2_dinode {
126: uint16_t di_mode; /* 0: IFMT, permissions; see below. */
127: int16_t di_nlink; /* 2: File link count. */
128: uint32_t di_uid; /* 4: File owner. */
129: uint32_t di_gid; /* 8: File group. */
130: uint32_t di_blksize; /* 12: Inode blocksize. */
131: uint64_t di_size; /* 16: File byte count. */
132: uint64_t di_blocks; /* 24: Bytes actually held. */
133: ufs_time_t di_atime; /* 32: Last access time. */
134: ufs_time_t di_mtime; /* 40: Last modified time. */
135: ufs_time_t di_ctime; /* 48: Last inode change time. */
136: ufs_time_t di_birthtime; /* 56: Inode creation time. */
137: int32_t di_mtimensec; /* 64: Last modified time. */
138: int32_t di_atimensec; /* 68: Last access time. */
139: int32_t di_ctimensec; /* 72: Last inode change time. */
140: int32_t di_birthnsec; /* 76: Inode creation time. */
141: int32_t di_gen; /* 80: Generation number. */
142: uint32_t di_kernflags; /* 84: Kernel flags. */
143: uint32_t di_flags; /* 88: Status flags (chflags). */
144: int32_t di_extsize; /* 92: External attributes block. */
145: ufs2_daddr_t di_extb[NXADDR];/* 96: External attributes block. */
146: ufs2_daddr_t di_db[NDADDR]; /* 112: Direct disk blocks. */
147: ufs2_daddr_t di_ib[NIADDR]; /* 208: Indirect disk blocks. */
148: int64_t di_spare[3]; /* 232: Reserved; currently unused */
149: };
150:
151: /*
152: * The di_db fields may be overlaid with other information for
153: * file types that do not have associated disk storage. Block
154: * and character devices overlay the first data block with their
155: * dev_t value. Short symbolic links place their path in the
156: * di_db area.
157: */
158: #define di_rdev di_db[0]
159:
160: /*
161: * A UFS1 dinode contains all the meta-data associated with a UFS1 file.
162: * This structure defines the on-disk format of a UFS1 dinode. Since
163: * this structure describes an on-disk structure, all its fields
164: * are defined by types with precise widths.
165: */
166: struct ufs1_dinode {
167: uint16_t di_mode; /* 0: IFMT, permissions; see below. */
168: int16_t di_nlink; /* 2: File link count. */
169: union {
170: uint16_t oldids[2]; /* 4: Ffs: old user and group ids. */
171: } di_u;
172: uint64_t di_size; /* 8: File byte count. */
173: int32_t di_atime; /* 16: Last access time. */
174: int32_t di_atimensec; /* 20: Last access time. */
175: int32_t di_mtime; /* 24: Last modified time. */
176: int32_t di_mtimensec; /* 28: Last modified time. */
177: int32_t di_ctime; /* 32: Last inode change time. */
178: int32_t di_ctimensec; /* 36: Last inode change time. */
179: ufs1_daddr_t di_db[NDADDR]; /* 40: Direct disk blocks. */
180: ufs1_daddr_t di_ib[NIADDR]; /* 88: Indirect disk blocks. */
181: uint32_t di_flags; /* 100: Status flags (chflags). */
182: int32_t di_blocks; /* 104: Blocks actually held. */
183: int32_t di_gen; /* 108: Generation number. */
184: uint32_t di_uid; /* 112: File owner. */
185: uint32_t di_gid; /* 116: File group. */
186: int32_t di_spare[2]; /* 120: Reserved; currently unused */
187: };
188: #define di_ogid di_u.oldids[1]
189: #define di_ouid di_u.oldids[0]
190:
191: #endif /* _UFS_UFS_DINODE_H_ */
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