2 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
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.
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.
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
18 #ifndef __XFS_TYPES_H__
19 #define __XFS_TYPES_H__
21 typedef uint32_t prid_t
; /* project ID */
23 typedef uint32_t xfs_agblock_t
; /* blockno in alloc. group */
24 typedef uint32_t xfs_agino_t
; /* inode # within allocation grp */
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 */
32 typedef int32_t xfs_suminfo_t
; /* type of bitmap summary info */
33 typedef int32_t xfs_rtword_t
; /* word type for bitmap manipulations */
35 typedef int64_t xfs_lsn_t
; /* log sequence number */
36 typedef int32_t xfs_tid_t
; /* transaction identifier */
38 typedef uint32_t xfs_dablk_t
; /* dir/attr block number (in file) */
39 typedef uint32_t xfs_dahash_t
; /* dir/attr hash value */
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 */
44 typedef uint64_t xfs_fileoff_t
; /* block number in a file */
45 typedef uint64_t xfs_filblks_t
; /* number of blocks in a file */
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 */
51 * New verifiers will return the instruction address of the failing check.
52 * NULL means everything is ok.
54 typedef void * xfs_failaddr_t
;
57 * Null values for the types.
59 #define NULLFSBLOCK ((xfs_fsblock_t)-1)
60 #define NULLRFSBLOCK ((xfs_rfsblock_t)-1)
61 #define NULLRTBLOCK ((xfs_rtblock_t)-1)
62 #define NULLFILEOFF ((xfs_fileoff_t)-1)
64 #define NULLAGBLOCK ((xfs_agblock_t)-1)
65 #define NULLAGNUMBER ((xfs_agnumber_t)-1)
67 #define NULLCOMMITLSN ((xfs_lsn_t)-1)
69 #define NULLFSINO ((xfs_ino_t)-1)
70 #define NULLAGINO ((xfs_agino_t)-1)
73 * Max values for extlen, extnum, aextnum.
75 #define MAXEXTLEN ((xfs_extlen_t)0x001fffff) /* 21 bits */
76 #define MAXEXTNUM ((xfs_extnum_t)0x7fffffff) /* signed int */
77 #define MAXAEXTNUM ((xfs_aextnum_t)0x7fff) /* signed short */
80 * Minimum and maximum blocksize and sectorsize.
81 * The blocksize upper limit is pretty much arbitrary.
82 * The sectorsize upper limit is due to sizeof(sb_sectsize).
83 * CRC enable filesystems use 512 byte inodes, meaning 512 byte block sizes
86 #define XFS_MIN_BLOCKSIZE_LOG 9 /* i.e. 512 bytes */
87 #define XFS_MAX_BLOCKSIZE_LOG 16 /* i.e. 65536 bytes */
88 #define XFS_MIN_BLOCKSIZE (1 << XFS_MIN_BLOCKSIZE_LOG)
89 #define XFS_MAX_BLOCKSIZE (1 << XFS_MAX_BLOCKSIZE_LOG)
90 #define XFS_MIN_CRC_BLOCKSIZE (1 << (XFS_MIN_BLOCKSIZE_LOG + 1))
91 #define XFS_MIN_SECTORSIZE_LOG 9 /* i.e. 512 bytes */
92 #define XFS_MAX_SECTORSIZE_LOG 15 /* i.e. 32768 bytes */
93 #define XFS_MIN_SECTORSIZE (1 << XFS_MIN_SECTORSIZE_LOG)
94 #define XFS_MAX_SECTORSIZE (1 << XFS_MAX_SECTORSIZE_LOG)
97 * Inode fork identifiers.
99 #define XFS_DATA_FORK 0
100 #define XFS_ATTR_FORK 1
101 #define XFS_COW_FORK 2
104 * Min numbers of data/attr fork btree root pointers.
110 * MAXNAMELEN is the length (including the terminating null) of
111 * the longest permissible file (component) name.
113 #define MAXNAMELEN 256
116 XFS_LOOKUP_EQi
, XFS_LOOKUP_LEi
, XFS_LOOKUP_GEi
120 XFS_BTNUM_BNOi
, XFS_BTNUM_CNTi
, XFS_BTNUM_RMAPi
, XFS_BTNUM_BMAPi
,
121 XFS_BTNUM_INOi
, XFS_BTNUM_FINOi
, XFS_BTNUM_REFCi
, XFS_BTNUM_MAX
125 const unsigned char *name
;
131 * uid_t and gid_t are hard-coded to 32 bits in the inode.
132 * Hence, an 'id' in a dquot is 32 bits..
134 typedef uint32_t xfs_dqid_t
;
137 * Constants for bit manipulations.
139 #define XFS_NBBYLOG 3 /* log2(NBBY) */
140 #define XFS_WORDLOG 2 /* log2(sizeof(xfs_rtword_t)) */
141 #define XFS_NBWORDLOG (XFS_NBBYLOG + XFS_WORDLOG)
142 #define XFS_NBWORD (1 << XFS_NBWORDLOG)
143 #define XFS_WORDMASK ((1 << XFS_WORDLOG) - 1)
145 struct xfs_iext_cursor
{
146 struct xfs_iext_leaf
*leaf
;
151 XFS_EXT_NORM
, XFS_EXT_UNWRITTEN
,
154 typedef struct xfs_bmbt_irec
156 xfs_fileoff_t br_startoff
; /* starting file offset */
157 xfs_fsblock_t br_startblock
; /* starting block number */
158 xfs_filblks_t br_blockcount
; /* number of blocks */
159 xfs_exntst_t br_state
; /* extent state */
162 #endif /* __XFS_TYPES_H__ */