1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
6 #ifndef __XFS_TYPES_H__
7 #define __XFS_TYPES_H__
9 typedef uint32_t prid_t
; /* project ID */
11 typedef uint32_t xfs_agblock_t
; /* blockno in alloc. group */
12 typedef uint32_t xfs_agino_t
; /* inode # within allocation grp */
13 typedef uint32_t xfs_extlen_t
; /* extent length in blocks */
14 typedef uint32_t xfs_agnumber_t
; /* allocation group number */
15 typedef int32_t xfs_extnum_t
; /* # of extents in a file */
16 typedef int16_t xfs_aextnum_t
; /* # extents in an attribute fork */
17 typedef int64_t xfs_fsize_t
; /* bytes in a file */
18 typedef uint64_t xfs_ufsize_t
; /* unsigned bytes in a file */
20 typedef int32_t xfs_suminfo_t
; /* type of bitmap summary info */
21 typedef uint32_t xfs_rtword_t
; /* word type for bitmap manipulations */
23 typedef int64_t xfs_lsn_t
; /* log sequence number */
24 typedef int32_t xfs_tid_t
; /* transaction identifier */
26 typedef uint32_t xfs_dablk_t
; /* dir/attr block number (in file) */
27 typedef uint32_t xfs_dahash_t
; /* dir/attr hash value */
29 typedef uint64_t xfs_fsblock_t
; /* blockno in filesystem (agno|agbno) */
30 typedef uint64_t xfs_rfsblock_t
; /* blockno in filesystem (raw) */
31 typedef uint64_t xfs_rtblock_t
; /* extent (block) in realtime area */
32 typedef uint64_t xfs_fileoff_t
; /* block number in a file */
33 typedef uint64_t xfs_filblks_t
; /* number of blocks in a file */
35 typedef int64_t xfs_srtblock_t
; /* signed version of xfs_rtblock_t */
36 typedef int64_t xfs_sfiloff_t
; /* signed block number in a file */
39 * New verifiers will return the instruction address of the failing check.
40 * NULL means everything is ok.
42 typedef void * xfs_failaddr_t
;
45 * Null values for the types.
47 #define NULLFSBLOCK ((xfs_fsblock_t)-1)
48 #define NULLRFSBLOCK ((xfs_rfsblock_t)-1)
49 #define NULLRTBLOCK ((xfs_rtblock_t)-1)
50 #define NULLFILEOFF ((xfs_fileoff_t)-1)
52 #define NULLAGBLOCK ((xfs_agblock_t)-1)
53 #define NULLAGNUMBER ((xfs_agnumber_t)-1)
55 #define NULLCOMMITLSN ((xfs_lsn_t)-1)
57 #define NULLFSINO ((xfs_ino_t)-1)
58 #define NULLAGINO ((xfs_agino_t)-1)
61 * Max values for extlen, extnum, aextnum.
63 #define MAXEXTLEN ((xfs_extlen_t)0x001fffff) /* 21 bits */
64 #define MAXEXTNUM ((xfs_extnum_t)0x7fffffff) /* signed int */
65 #define MAXAEXTNUM ((xfs_aextnum_t)0x7fff) /* signed short */
68 * Minimum and maximum blocksize and sectorsize.
69 * The blocksize upper limit is pretty much arbitrary.
70 * The sectorsize upper limit is due to sizeof(sb_sectsize).
71 * CRC enable filesystems use 512 byte inodes, meaning 512 byte block sizes
74 #define XFS_MIN_BLOCKSIZE_LOG 9 /* i.e. 512 bytes */
75 #define XFS_MAX_BLOCKSIZE_LOG 16 /* i.e. 65536 bytes */
76 #define XFS_MIN_BLOCKSIZE (1 << XFS_MIN_BLOCKSIZE_LOG)
77 #define XFS_MAX_BLOCKSIZE (1 << XFS_MAX_BLOCKSIZE_LOG)
78 #define XFS_MIN_CRC_BLOCKSIZE (1 << (XFS_MIN_BLOCKSIZE_LOG + 1))
79 #define XFS_MIN_SECTORSIZE_LOG 9 /* i.e. 512 bytes */
80 #define XFS_MAX_SECTORSIZE_LOG 15 /* i.e. 32768 bytes */
81 #define XFS_MIN_SECTORSIZE (1 << XFS_MIN_SECTORSIZE_LOG)
82 #define XFS_MAX_SECTORSIZE (1 << XFS_MAX_SECTORSIZE_LOG)
85 * Inode fork identifiers.
87 #define XFS_DATA_FORK 0
88 #define XFS_ATTR_FORK 1
89 #define XFS_COW_FORK 2
92 * Min numbers of data/attr fork btree root pointers.
98 * MAXNAMELEN is the length (including the terminating null) of
99 * the longest permissible file (component) name.
101 #define MAXNAMELEN 256
104 XFS_LOOKUP_EQi
, XFS_LOOKUP_LEi
, XFS_LOOKUP_GEi
108 XFS_BTNUM_BNOi
, XFS_BTNUM_CNTi
, XFS_BTNUM_RMAPi
, XFS_BTNUM_BMAPi
,
109 XFS_BTNUM_INOi
, XFS_BTNUM_FINOi
, XFS_BTNUM_REFCi
, XFS_BTNUM_MAX
113 const unsigned char *name
;
119 * uid_t and gid_t are hard-coded to 32 bits in the inode.
120 * Hence, an 'id' in a dquot is 32 bits..
122 typedef uint32_t xfs_dqid_t
;
125 * Constants for bit manipulations.
127 #define XFS_NBBYLOG 3 /* log2(NBBY) */
128 #define XFS_WORDLOG 2 /* log2(sizeof(xfs_rtword_t)) */
129 #define XFS_NBWORDLOG (XFS_NBBYLOG + XFS_WORDLOG)
130 #define XFS_NBWORD (1 << XFS_NBWORDLOG)
131 #define XFS_WORDMASK ((1 << XFS_WORDLOG) - 1)
133 struct xfs_iext_cursor
{
134 struct xfs_iext_leaf
*leaf
;
139 XFS_EXT_NORM
, XFS_EXT_UNWRITTEN
,
142 typedef struct xfs_bmbt_irec
144 xfs_fileoff_t br_startoff
; /* starting file offset */
145 xfs_fsblock_t br_startblock
; /* starting block number */
146 xfs_filblks_t br_blockcount
; /* number of blocks */
147 xfs_exntst_t br_state
; /* extent state */
151 * Type verifier functions
155 xfs_agblock_t
xfs_ag_block_count(struct xfs_mount
*mp
, xfs_agnumber_t agno
);
156 bool xfs_verify_agbno(struct xfs_mount
*mp
, xfs_agnumber_t agno
,
157 xfs_agblock_t agbno
);
158 bool xfs_verify_fsbno(struct xfs_mount
*mp
, xfs_fsblock_t fsbno
);
160 void xfs_agino_range(struct xfs_mount
*mp
, xfs_agnumber_t agno
,
161 xfs_agino_t
*first
, xfs_agino_t
*last
);
162 bool xfs_verify_agino(struct xfs_mount
*mp
, xfs_agnumber_t agno
,
164 bool xfs_verify_ino(struct xfs_mount
*mp
, xfs_ino_t ino
);
165 bool xfs_internal_inum(struct xfs_mount
*mp
, xfs_ino_t ino
);
166 bool xfs_verify_dir_ino(struct xfs_mount
*mp
, xfs_ino_t ino
);
167 bool xfs_verify_rtbno(struct xfs_mount
*mp
, xfs_rtblock_t rtbno
);
168 bool xfs_verify_icount(struct xfs_mount
*mp
, unsigned long long icount
);
170 #endif /* __XFS_TYPES_H__ */