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15637ed4 RG |
1 | /* |
2 | * Copyright (c) 1982, 1989 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * 3. All advertising materials mentioning features or use of this software | |
14 | * must display the following acknowledgement: | |
15 | * This product includes software developed by the University of | |
16 | * California, Berkeley and its contributors. | |
17 | * 4. Neither the name of the University nor the names of its contributors | |
18 | * may be used to endorse or promote products derived from this software | |
19 | * without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
31 | * SUCH DAMAGE. | |
32 | * | |
78ed81a3 | 33 | * from: @(#)dinode.h 7.10 (Berkeley) 5/8/91 |
34 | * $Id$ | |
15637ed4 RG |
35 | */ |
36 | ||
37 | /* | |
38 | * A dinode contains all the meta-data associated with a UFS file. | |
39 | * This structure defines the on-disk format of a dinode. | |
40 | */ | |
41 | ||
42 | #define NDADDR 12 /* direct addresses in inode */ | |
43 | #define NIADDR 3 /* indirect addresses in inode */ | |
44 | ||
78ed81a3 | 45 | #define MAXFASTLINK (((NDADDR+NIADDR) * sizeof(daddr_t)) - 1) |
46 | ||
15637ed4 RG |
47 | struct dinode { |
48 | u_short di_mode; /* 0: mode and type of file */ | |
49 | short di_nlink; /* 2: number of links to file */ | |
50 | uid_t di_uid; /* 4: owner's user id */ | |
51 | gid_t di_gid; /* 6: owner's group id */ | |
52 | u_quad di_qsize; /* 8: number of bytes in file */ | |
53 | time_t di_atime; /* 16: time last accessed */ | |
54 | long di_atspare; | |
55 | time_t di_mtime; /* 24: time last modified */ | |
56 | long di_mtspare; | |
57 | time_t di_ctime; /* 32: last time inode changed */ | |
58 | long di_ctspare; | |
78ed81a3 | 59 | union { |
60 | struct { | |
61 | daddr_t di_udb[NDADDR]; /* 40: disk block addresses */ | |
62 | daddr_t di_uib[NIADDR]; /* 88: indirect blocks */ | |
63 | } di_addr; | |
64 | char di_usymlink[MAXFASTLINK+1]; | |
65 | } di_un; | |
15637ed4 RG |
66 | long di_flags; /* 100: status, currently unused */ |
67 | long di_blocks; /* 104: blocks actually held */ | |
68 | long di_gen; /* 108: generation number */ | |
78ed81a3 | 69 | #define DI_SPARE_SZ 4 /* 112: spare for 4 longs */ |
70 | u_long di_spare[DI_SPARE_SZ]; /* reserved (unused) */ | |
15637ed4 RG |
71 | }; |
72 | ||
78ed81a3 | 73 | #define di_db di_un.di_addr.di_udb |
74 | #define di_ib di_un.di_addr.di_uib | |
75 | #define di_symlink di_un.di_usymlink | |
76 | ||
15637ed4 RG |
77 | #if BYTE_ORDER == LITTLE_ENDIAN || defined(tahoe) /* ugh! -- must be fixed */ |
78 | #define di_size di_qsize.val[0] | |
79 | #else /* BYTE_ORDER == BIG_ENDIAN */ | |
80 | #define di_size di_qsize.val[1] | |
81 | #endif | |
82 | #define di_rdev di_db[0] | |
83 | ||
84 | /* file modes */ | |
85 | #define IFMT 0170000 /* mask of file type */ | |
86 | #define IFIFO 0010000 /* named pipe (fifo) */ | |
87 | #define IFCHR 0020000 /* character special device */ | |
88 | #define IFDIR 0040000 /* directory */ | |
89 | #define IFBLK 0060000 /* block special device */ | |
90 | #define IFREG 0100000 /* regular file */ | |
91 | #define IFLNK 0120000 /* symbolic link */ | |
92 | #define IFSOCK 0140000 /* UNIX domain socket */ | |
93 | ||
94 | #define ISUID 04000 /* set user identifier when exec'ing */ | |
95 | #define ISGID 02000 /* set group identifier when exec'ing */ | |
96 | #define ISVTX 01000 /* save execution information on exit */ | |
97 | #define IREAD 0400 /* read permission */ | |
98 | #define IWRITE 0200 /* write permission */ | |
99 | #define IEXEC 0100 /* execute permission */ | |
78ed81a3 | 100 | |
101 | #define DFASTLINK(di) \ | |
102 | ((((di).di_mode & IFMT) == IFLNK) && \ | |
103 | ((di).di_size <= MAXFASTLINK) && \ | |
104 | ((di).di_size == (di).di_spare[0])) |