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1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
7b718769 NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
9 | * This program is distributed in the hope that it would be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
1da177e4 | 13 | * |
7b718769 NS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
1da177e4 LT |
17 | */ |
18 | #ifndef __XFS_TYPES_H__ | |
19 | #define __XFS_TYPES_H__ | |
20 | ||
d386b32b DC |
21 | typedef __uint32_t prid_t; /* project ID */ |
22 | ||
1da177e4 | 23 | typedef __uint32_t xfs_agblock_t; /* blockno in alloc. group */ |
60a34607 | 24 | typedef __uint32_t xfs_agino_t; /* inode # within allocation grp */ |
1da177e4 LT |
25 | typedef __uint32_t xfs_extlen_t; /* extent length in blocks */ |
26 | typedef __uint32_t xfs_agnumber_t; /* allocation group number */ | |
27 | typedef __int32_t xfs_extnum_t; /* # of extents in a file */ | |
28 | typedef __int16_t xfs_aextnum_t; /* # extents in an attribute fork */ | |
29 | typedef __int64_t xfs_fsize_t; /* bytes in a file */ | |
30 | typedef __uint64_t xfs_ufsize_t; /* unsigned bytes in a file */ | |
31 | ||
32 | typedef __int32_t xfs_suminfo_t; /* type of bitmap summary info */ | |
33 | typedef __int32_t xfs_rtword_t; /* word type for bitmap manipulations */ | |
34 | ||
35 | typedef __int64_t xfs_lsn_t; /* log sequence number */ | |
36 | typedef __int32_t xfs_tid_t; /* transaction identifier */ | |
37 | ||
38 | typedef __uint32_t xfs_dablk_t; /* dir/attr block number (in file) */ | |
39 | typedef __uint32_t xfs_dahash_t; /* dir/attr hash value */ | |
40 | ||
1da177e4 LT |
41 | /* |
42 | * These types are 64 bits on disk but are either 32 or 64 bits in memory. | |
43 | * Disk based types: | |
44 | */ | |
45 | typedef __uint64_t xfs_dfsbno_t; /* blockno in filesystem (agno|agbno) */ | |
46 | typedef __uint64_t xfs_drfsbno_t; /* blockno in filesystem (raw) */ | |
47 | typedef __uint64_t xfs_drtbno_t; /* extent (block) in realtime area */ | |
48 | typedef __uint64_t xfs_dfiloff_t; /* block number in a file */ | |
49 | typedef __uint64_t xfs_dfilblks_t; /* number of blocks in a file */ | |
50 | ||
51 | /* | |
52 | * Memory based types are conditional. | |
53 | */ | |
54 | #if XFS_BIG_BLKNOS | |
55 | typedef __uint64_t xfs_fsblock_t; /* blockno in filesystem (agno|agbno) */ | |
56 | typedef __uint64_t xfs_rfsblock_t; /* blockno in filesystem (raw) */ | |
57 | typedef __uint64_t xfs_rtblock_t; /* extent (block) in realtime area */ | |
58 | typedef __int64_t xfs_srtblock_t; /* signed version of xfs_rtblock_t */ | |
59 | #else | |
60 | typedef __uint32_t xfs_fsblock_t; /* blockno in filesystem (agno|agbno) */ | |
61 | typedef __uint32_t xfs_rfsblock_t; /* blockno in filesystem (raw) */ | |
62 | typedef __uint32_t xfs_rtblock_t; /* extent (block) in realtime area */ | |
63 | typedef __int32_t xfs_srtblock_t; /* signed version of xfs_rtblock_t */ | |
64 | #endif | |
65 | typedef __uint64_t xfs_fileoff_t; /* block number in a file */ | |
66 | typedef __int64_t xfs_sfiloff_t; /* signed block number in a file */ | |
67 | typedef __uint64_t xfs_filblks_t; /* number of blocks in a file */ | |
68 | ||
60a34607 | 69 | |
1da177e4 LT |
70 | /* |
71 | * Null values for the types. | |
72 | */ | |
73 | #define NULLDFSBNO ((xfs_dfsbno_t)-1) | |
74 | #define NULLDRFSBNO ((xfs_drfsbno_t)-1) | |
75 | #define NULLDRTBNO ((xfs_drtbno_t)-1) | |
76 | #define NULLDFILOFF ((xfs_dfiloff_t)-1) | |
77 | ||
78 | #define NULLFSBLOCK ((xfs_fsblock_t)-1) | |
79 | #define NULLRFSBLOCK ((xfs_rfsblock_t)-1) | |
80 | #define NULLRTBLOCK ((xfs_rtblock_t)-1) | |
81 | #define NULLFILEOFF ((xfs_fileoff_t)-1) | |
82 | ||
83 | #define NULLAGBLOCK ((xfs_agblock_t)-1) | |
84 | #define NULLAGNUMBER ((xfs_agnumber_t)-1) | |
85 | #define NULLEXTNUM ((xfs_extnum_t)-1) | |
86 | ||
87 | #define NULLCOMMITLSN ((xfs_lsn_t)-1) | |
88 | ||
60a34607 DC |
89 | #define NULLFSINO ((xfs_ino_t)-1) |
90 | #define NULLAGINO ((xfs_agino_t)-1) | |
91 | ||
1da177e4 LT |
92 | /* |
93 | * Max values for extlen, extnum, aextnum. | |
94 | */ | |
95 | #define MAXEXTLEN ((xfs_extlen_t)0x001fffff) /* 21 bits */ | |
96 | #define MAXEXTNUM ((xfs_extnum_t)0x7fffffff) /* signed int */ | |
97 | #define MAXAEXTNUM ((xfs_aextnum_t)0x7fff) /* signed short */ | |
98 | ||
77c1a08f DC |
99 | /* |
100 | * Minimum and maximum blocksize and sectorsize. | |
101 | * The blocksize upper limit is pretty much arbitrary. | |
102 | * The sectorsize upper limit is due to sizeof(sb_sectsize). | |
103 | */ | |
104 | #define XFS_MIN_BLOCKSIZE_LOG 9 /* i.e. 512 bytes */ | |
105 | #define XFS_MAX_BLOCKSIZE_LOG 16 /* i.e. 65536 bytes */ | |
106 | #define XFS_MIN_BLOCKSIZE (1 << XFS_MIN_BLOCKSIZE_LOG) | |
107 | #define XFS_MAX_BLOCKSIZE (1 << XFS_MAX_BLOCKSIZE_LOG) | |
108 | #define XFS_MIN_SECTORSIZE_LOG 9 /* i.e. 512 bytes */ | |
109 | #define XFS_MAX_SECTORSIZE_LOG 15 /* i.e. 32768 bytes */ | |
110 | #define XFS_MIN_SECTORSIZE (1 << XFS_MIN_SECTORSIZE_LOG) | |
111 | #define XFS_MAX_SECTORSIZE (1 << XFS_MAX_SECTORSIZE_LOG) | |
112 | ||
69432832 DC |
113 | /* |
114 | * Inode fork identifiers. | |
115 | */ | |
116 | #define XFS_DATA_FORK 0 | |
117 | #define XFS_ATTR_FORK 1 | |
118 | ||
d8cc890d NS |
119 | /* |
120 | * Min numbers of data/attr fork btree root pointers. | |
121 | */ | |
122 | #define MINDBTPTRS 3 | |
123 | #define MINABTPTRS 2 | |
124 | ||
1da177e4 LT |
125 | /* |
126 | * MAXNAMELEN is the length (including the terminating null) of | |
127 | * the longest permissible file (component) name. | |
128 | */ | |
129 | #define MAXNAMELEN 256 | |
130 | ||
1da177e4 LT |
131 | typedef enum { |
132 | XFS_LOOKUP_EQi, XFS_LOOKUP_LEi, XFS_LOOKUP_GEi | |
133 | } xfs_lookup_t; | |
134 | ||
135 | typedef enum { | |
136 | XFS_BTNUM_BNOi, XFS_BTNUM_CNTi, XFS_BTNUM_BMAPi, XFS_BTNUM_INOi, | |
137 | XFS_BTNUM_MAX | |
138 | } xfs_btnum_t; | |
139 | ||
556b8b16 | 140 | struct xfs_name { |
e2bcd936 DC |
141 | const unsigned char *name; |
142 | int len; | |
0cb97766 | 143 | int type; |
556b8b16 BN |
144 | }; |
145 | ||
6ca1c906 DC |
146 | /* |
147 | * uid_t and gid_t are hard-coded to 32 bits in the inode. | |
148 | * Hence, an 'id' in a dquot is 32 bits.. | |
149 | */ | |
150 | typedef __uint32_t xfs_dqid_t; | |
151 | ||
c7298202 DC |
152 | /* |
153 | * Constants for bit manipulations. | |
154 | */ | |
155 | #define XFS_NBBYLOG 3 /* log2(NBBY) */ | |
156 | #define XFS_WORDLOG 2 /* log2(sizeof(xfs_rtword_t)) */ | |
157 | #define XFS_NBWORDLOG (XFS_NBBYLOG + XFS_WORDLOG) | |
158 | #define XFS_NBWORD (1 << XFS_NBWORDLOG) | |
159 | #define XFS_WORDMASK ((1 << XFS_WORDLOG) - 1) | |
160 | ||
161 | ||
1da177e4 | 162 | #endif /* __XFS_TYPES_H__ */ |