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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 | typedef __uint64_t xfs_fsblock_t; /* blockno in filesystem (agno|agbno) */ |
42 | typedef __uint64_t xfs_rfsblock_t; /* blockno in filesystem (raw) */ | |
43 | typedef __uint64_t xfs_rtblock_t; /* extent (block) in realtime area */ | |
1da177e4 | 44 | typedef __uint64_t xfs_fileoff_t; /* block number in a file */ |
1da177e4 LT |
45 | typedef __uint64_t xfs_filblks_t; /* number of blocks in a file */ |
46 | ||
d5cf09ba CH |
47 | typedef __int64_t xfs_srtblock_t; /* signed version of xfs_rtblock_t */ |
48 | typedef __int64_t xfs_sfiloff_t; /* signed block number in a file */ | |
60a34607 | 49 | |
1da177e4 LT |
50 | /* |
51 | * Null values for the types. | |
52 | */ | |
1da177e4 LT |
53 | #define NULLFSBLOCK ((xfs_fsblock_t)-1) |
54 | #define NULLRFSBLOCK ((xfs_rfsblock_t)-1) | |
55 | #define NULLRTBLOCK ((xfs_rtblock_t)-1) | |
56 | #define NULLFILEOFF ((xfs_fileoff_t)-1) | |
57 | ||
58 | #define NULLAGBLOCK ((xfs_agblock_t)-1) | |
59 | #define NULLAGNUMBER ((xfs_agnumber_t)-1) | |
60 | #define NULLEXTNUM ((xfs_extnum_t)-1) | |
61 | ||
62 | #define NULLCOMMITLSN ((xfs_lsn_t)-1) | |
63 | ||
60a34607 DC |
64 | #define NULLFSINO ((xfs_ino_t)-1) |
65 | #define NULLAGINO ((xfs_agino_t)-1) | |
66 | ||
1da177e4 LT |
67 | /* |
68 | * Max values for extlen, extnum, aextnum. | |
69 | */ | |
70 | #define MAXEXTLEN ((xfs_extlen_t)0x001fffff) /* 21 bits */ | |
71 | #define MAXEXTNUM ((xfs_extnum_t)0x7fffffff) /* signed int */ | |
72 | #define MAXAEXTNUM ((xfs_aextnum_t)0x7fff) /* signed short */ | |
73 | ||
77c1a08f DC |
74 | /* |
75 | * Minimum and maximum blocksize and sectorsize. | |
76 | * The blocksize upper limit is pretty much arbitrary. | |
77 | * The sectorsize upper limit is due to sizeof(sb_sectsize). | |
78 | */ | |
79 | #define XFS_MIN_BLOCKSIZE_LOG 9 /* i.e. 512 bytes */ | |
80 | #define XFS_MAX_BLOCKSIZE_LOG 16 /* i.e. 65536 bytes */ | |
81 | #define XFS_MIN_BLOCKSIZE (1 << XFS_MIN_BLOCKSIZE_LOG) | |
82 | #define XFS_MAX_BLOCKSIZE (1 << XFS_MAX_BLOCKSIZE_LOG) | |
83 | #define XFS_MIN_SECTORSIZE_LOG 9 /* i.e. 512 bytes */ | |
84 | #define XFS_MAX_SECTORSIZE_LOG 15 /* i.e. 32768 bytes */ | |
85 | #define XFS_MIN_SECTORSIZE (1 << XFS_MIN_SECTORSIZE_LOG) | |
86 | #define XFS_MAX_SECTORSIZE (1 << XFS_MAX_SECTORSIZE_LOG) | |
87 | ||
69432832 DC |
88 | /* |
89 | * Inode fork identifiers. | |
90 | */ | |
91 | #define XFS_DATA_FORK 0 | |
92 | #define XFS_ATTR_FORK 1 | |
93 | ||
d8cc890d NS |
94 | /* |
95 | * Min numbers of data/attr fork btree root pointers. | |
96 | */ | |
97 | #define MINDBTPTRS 3 | |
98 | #define MINABTPTRS 2 | |
99 | ||
1da177e4 LT |
100 | /* |
101 | * MAXNAMELEN is the length (including the terminating null) of | |
102 | * the longest permissible file (component) name. | |
103 | */ | |
104 | #define MAXNAMELEN 256 | |
105 | ||
1da177e4 LT |
106 | typedef enum { |
107 | XFS_LOOKUP_EQi, XFS_LOOKUP_LEi, XFS_LOOKUP_GEi | |
108 | } xfs_lookup_t; | |
109 | ||
110 | typedef enum { | |
111 | XFS_BTNUM_BNOi, XFS_BTNUM_CNTi, XFS_BTNUM_BMAPi, XFS_BTNUM_INOi, | |
aafc3c24 | 112 | XFS_BTNUM_FINOi, XFS_BTNUM_MAX |
1da177e4 LT |
113 | } xfs_btnum_t; |
114 | ||
556b8b16 | 115 | struct xfs_name { |
e2bcd936 DC |
116 | const unsigned char *name; |
117 | int len; | |
0cb97766 | 118 | int type; |
556b8b16 BN |
119 | }; |
120 | ||
6ca1c906 DC |
121 | /* |
122 | * uid_t and gid_t are hard-coded to 32 bits in the inode. | |
123 | * Hence, an 'id' in a dquot is 32 bits.. | |
124 | */ | |
125 | typedef __uint32_t xfs_dqid_t; | |
126 | ||
c7298202 DC |
127 | /* |
128 | * Constants for bit manipulations. | |
129 | */ | |
130 | #define XFS_NBBYLOG 3 /* log2(NBBY) */ | |
131 | #define XFS_WORDLOG 2 /* log2(sizeof(xfs_rtword_t)) */ | |
132 | #define XFS_NBWORDLOG (XFS_NBBYLOG + XFS_WORDLOG) | |
133 | #define XFS_NBWORD (1 << XFS_NBWORDLOG) | |
134 | #define XFS_WORDMASK ((1 << XFS_WORDLOG) - 1) | |
135 | ||
136 | ||
1da177e4 | 137 | #endif /* __XFS_TYPES_H__ */ |