1 /*
2 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
4 *
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
7 * published by the Free Software Foundation.
8 *
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.
13 *
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
17 */
18 #ifndef __XFS_TYPES_H__
19 #define __XFS_TYPES_H__
20
21 #ifdef __KERNEL__
22
23 /*
24 * POSIX Extensions
25 */
26 typedef unsigned char uchar_t;
27 typedef unsigned short ushort_t;
28 typedef unsigned int uint_t;
29 typedef unsigned long ulong_t;
30
31 /*
32 * Additional type declarations for XFS
33 */
34 typedef signed char __int8_t;
35 typedef unsigned char __uint8_t;
36 typedef signed short int __int16_t;
37 typedef unsigned short int __uint16_t;
38 typedef signed int __int32_t;
39 typedef unsigned int __uint32_t;
40 typedef signed long long int __int64_t;
41 typedef unsigned long long int __uint64_t;
42
43 typedef enum { B_FALSE,B_TRUE } boolean_t;
44 typedef __uint32_t prid_t; /* project ID */
45 typedef __uint32_t inst_t; /* an instruction */
46
47 typedef __s64 xfs_off_t; /* <file offset> type */
48 typedef __u64 xfs_ino_t; /* <inode> type */
49 typedef __s64 xfs_daddr_t; /* <disk address> type */
50 typedef char * xfs_caddr_t; /* <core address> type */
51 typedef __u32 xfs_dev_t;
52 typedef __u32 xfs_nlink_t;
53
54 /* __psint_t is the same size as a pointer */
55 #if (BITS_PER_LONG == 32)
56 typedef __int32_t __psint_t;
57 typedef __uint32_t __psunsigned_t;
58 #elif (BITS_PER_LONG == 64)
59 typedef __int64_t __psint_t;
60 typedef __uint64_t __psunsigned_t;
61 #else
62 #error BITS_PER_LONG must be 32 or 64
63 #endif
64
65 #endif /* __KERNEL__ */
66
67 typedef __uint32_t xfs_agblock_t; /* blockno in alloc. group */
68 typedef __uint32_t xfs_extlen_t; /* extent length in blocks */
69 typedef __uint32_t xfs_agnumber_t; /* allocation group number */
70 typedef __int32_t xfs_extnum_t; /* # of extents in a file */
71 typedef __int16_t xfs_aextnum_t; /* # extents in an attribute fork */
72 typedef __int64_t xfs_fsize_t; /* bytes in a file */
73 typedef __uint64_t xfs_ufsize_t; /* unsigned bytes in a file */
74
75 typedef __int32_t xfs_suminfo_t; /* type of bitmap summary info */
76 typedef __int32_t xfs_rtword_t; /* word type for bitmap manipulations */
77
78 typedef __int64_t xfs_lsn_t; /* log sequence number */
79 typedef __int32_t xfs_tid_t; /* transaction identifier */
80
81 typedef __uint32_t xfs_dablk_t; /* dir/attr block number (in file) */
82 typedef __uint32_t xfs_dahash_t; /* dir/attr hash value */
83
84 typedef __uint16_t xfs_prid_t; /* prid_t truncated to 16bits in XFS */
85
86 /*
87 * These types are 64 bits on disk but are either 32 or 64 bits in memory.
88 * Disk based types:
89 */
90 typedef __uint64_t xfs_dfsbno_t; /* blockno in filesystem (agno|agbno) */
91 typedef __uint64_t xfs_drfsbno_t; /* blockno in filesystem (raw) */
92 typedef __uint64_t xfs_drtbno_t; /* extent (block) in realtime area */
93 typedef __uint64_t xfs_dfiloff_t; /* block number in a file */
94 typedef __uint64_t xfs_dfilblks_t; /* number of blocks in a file */
95
96 /*
97 * Memory based types are conditional.
98 */
99 #if XFS_BIG_BLKNOS
100 typedef __uint64_t xfs_fsblock_t; /* blockno in filesystem (agno|agbno) */
101 typedef __uint64_t xfs_rfsblock_t; /* blockno in filesystem (raw) */
102 typedef __uint64_t xfs_rtblock_t; /* extent (block) in realtime area */
103 typedef __int64_t xfs_srtblock_t; /* signed version of xfs_rtblock_t */
104 #else
105 typedef __uint32_t xfs_fsblock_t; /* blockno in filesystem (agno|agbno) */
106 typedef __uint32_t xfs_rfsblock_t; /* blockno in filesystem (raw) */
107 typedef __uint32_t xfs_rtblock_t; /* extent (block) in realtime area */
108 typedef __int32_t xfs_srtblock_t; /* signed version of xfs_rtblock_t */
109 #endif
110 typedef __uint64_t xfs_fileoff_t; /* block number in a file */
111 typedef __int64_t xfs_sfiloff_t; /* signed block number in a file */
112 typedef __uint64_t xfs_filblks_t; /* number of blocks in a file */
113
114 typedef __uint8_t xfs_arch_t; /* architecture of an xfs fs */
115
116 /*
117 * Null values for the types.
118 */
119 #define NULLDFSBNO ((xfs_dfsbno_t)-1)
120 #define NULLDRFSBNO ((xfs_drfsbno_t)-1)
121 #define NULLDRTBNO ((xfs_drtbno_t)-1)
122 #define NULLDFILOFF ((xfs_dfiloff_t)-1)
123
124 #define NULLFSBLOCK ((xfs_fsblock_t)-1)
125 #define NULLRFSBLOCK ((xfs_rfsblock_t)-1)
126 #define NULLRTBLOCK ((xfs_rtblock_t)-1)
127 #define NULLFILEOFF ((xfs_fileoff_t)-1)
128
129 #define NULLAGBLOCK ((xfs_agblock_t)-1)
130 #define NULLAGNUMBER ((xfs_agnumber_t)-1)
131 #define NULLEXTNUM ((xfs_extnum_t)-1)
132
133 #define NULLCOMMITLSN ((xfs_lsn_t)-1)
134
135 /*
136 * Max values for extlen, extnum, aextnum.
137 */
138 #define MAXEXTLEN ((xfs_extlen_t)0x001fffff) /* 21 bits */
139 #define MAXEXTNUM ((xfs_extnum_t)0x7fffffff) /* signed int */
140 #define MAXAEXTNUM ((xfs_aextnum_t)0x7fff) /* signed short */
141
142 /*
143 * Min numbers of data/attr fork btree root pointers.
144 */
145 #define MINDBTPTRS 3
146 #define MINABTPTRS 2
147
148 /*
149 * MAXNAMELEN is the length (including the terminating null) of
150 * the longest permissible file (component) name.
151 */
152 #define MAXNAMELEN 256
153
154 typedef enum {
155 XFS_LOOKUP_EQi, XFS_LOOKUP_LEi, XFS_LOOKUP_GEi
156 } xfs_lookup_t;
157
158 typedef enum {
159 XFS_BTNUM_BNOi, XFS_BTNUM_CNTi, XFS_BTNUM_BMAPi, XFS_BTNUM_INOi,
160 XFS_BTNUM_MAX
161 } xfs_btnum_t;
162
163 #endif /* __XFS_TYPES_H__ */
164
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