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_rtxlen_t; /* file extent length in rtextents */
15 typedef uint32_t xfs_agnumber_t; /* allocation group number */
16 typedef uint64_t xfs_extnum_t; /* # of extents in a file */
17 typedef uint32_t xfs_aextnum_t; /* # extents in an attribute fork */
18 typedef int64_t xfs_fsize_t; /* bytes in a file */
19 typedef uint64_t xfs_ufsize_t; /* unsigned bytes in a file */
21 typedef int32_t xfs_suminfo_t; /* type of bitmap summary info */
22 typedef uint32_t xfs_rtword_t; /* word type for bitmap manipulations */
24 typedef int64_t xfs_lsn_t; /* log sequence number */
25 typedef int64_t xfs_csn_t; /* CIL sequence number */
27 typedef uint32_t xfs_dablk_t; /* dir/attr block number (in file) */
28 typedef uint32_t xfs_dahash_t; /* dir/attr hash value */
30 typedef uint64_t xfs_fsblock_t; /* blockno in filesystem (agno|agbno) */
31 typedef uint64_t xfs_rfsblock_t; /* blockno in filesystem (raw) */
32 typedef uint64_t xfs_rtblock_t; /* extent (block) in realtime area */
33 typedef uint64_t xfs_fileoff_t; /* block number in a file */
34 typedef uint64_t xfs_filblks_t; /* number of blocks in a file */
35 typedef uint64_t xfs_rtbxlen_t; /* rtbitmap extent length in rtextents */
37 typedef int64_t xfs_srtblock_t; /* signed version of xfs_rtblock_t */
40 * New verifiers will return the instruction address of the failing check.
41 * NULL means everything is ok.
43 typedef void * xfs_failaddr_t;
46 * Null values for the types.
48 #define NULLFSBLOCK ((xfs_fsblock_t)-1)
49 #define NULLRFSBLOCK ((xfs_rfsblock_t)-1)
50 #define NULLRTBLOCK ((xfs_rtblock_t)-1)
51 #define NULLFILEOFF ((xfs_fileoff_t)-1)
53 #define NULLAGBLOCK ((xfs_agblock_t)-1)
54 #define NULLAGNUMBER ((xfs_agnumber_t)-1)
56 #define NULLCOMMITLSN ((xfs_lsn_t)-1)
58 #define NULLFSINO ((xfs_ino_t)-1)
59 #define NULLAGINO ((xfs_agino_t)-1)
62 * Minimum and maximum blocksize and sectorsize.
63 * The blocksize upper limit is pretty much arbitrary.
64 * The sectorsize upper limit is due to sizeof(sb_sectsize).
65 * CRC enable filesystems use 512 byte inodes, meaning 512 byte block sizes
68 #define XFS_MIN_BLOCKSIZE_LOG 9 /* i.e. 512 bytes */
69 #define XFS_MAX_BLOCKSIZE_LOG 16 /* i.e. 65536 bytes */
70 #define XFS_MIN_BLOCKSIZE (1 << XFS_MIN_BLOCKSIZE_LOG)
71 #define XFS_MAX_BLOCKSIZE (1 << XFS_MAX_BLOCKSIZE_LOG)
72 #define XFS_MIN_CRC_BLOCKSIZE (1 << (XFS_MIN_BLOCKSIZE_LOG + 1))
73 #define XFS_MIN_SECTORSIZE_LOG 9 /* i.e. 512 bytes */
74 #define XFS_MAX_SECTORSIZE_LOG 15 /* i.e. 32768 bytes */
75 #define XFS_MIN_SECTORSIZE (1 << XFS_MIN_SECTORSIZE_LOG)
76 #define XFS_MAX_SECTORSIZE (1 << XFS_MAX_SECTORSIZE_LOG)
79 * Inode fork identifiers.
81 #define XFS_DATA_FORK 0
82 #define XFS_ATTR_FORK 1
83 #define XFS_COW_FORK 2
85 #define XFS_WHICHFORK_STRINGS \
86 { XFS_DATA_FORK, "data" }, \
87 { XFS_ATTR_FORK, "attr" }, \
88 { XFS_COW_FORK, "cow" }
91 * Min numbers of data/attr fork btree root pointers.
97 * MAXNAMELEN is the length (including the terminating null) of
98 * the longest permissible file (component) name.
100 #define MAXNAMELEN 256
103 * This enum is used in string mapping in xfs_trace.h; please keep the
104 * TRACE_DEFINE_ENUMs for it up to date.
107 XFS_LOOKUP_EQi, XFS_LOOKUP_LEi, XFS_LOOKUP_GEi
110 #define XFS_AG_BTREE_CMP_FORMAT_STR \
111 { XFS_LOOKUP_EQi, "eq" }, \
112 { XFS_LOOKUP_LEi, "le" }, \
113 { XFS_LOOKUP_GEi, "ge" }
116 * This enum is used in string mapping in xfs_trace.h and scrub/trace.h;
117 * please keep the TRACE_DEFINE_ENUMs for it up to date.
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
124 #define XFS_BTNUM_STRINGS \
125 { XFS_BTNUM_BNOi, "bnobt" }, \
126 { XFS_BTNUM_CNTi, "cntbt" }, \
127 { XFS_BTNUM_RMAPi, "rmapbt" }, \
128 { XFS_BTNUM_BMAPi, "bmbt" }, \
129 { XFS_BTNUM_INOi, "inobt" }, \
130 { XFS_BTNUM_FINOi, "finobt" }, \
131 { XFS_BTNUM_REFCi, "refcbt" }
134 const unsigned char *name;
140 * uid_t and gid_t are hard-coded to 32 bits in the inode.
141 * Hence, an 'id' in a dquot is 32 bits..
143 typedef uint32_t xfs_dqid_t;
146 * Constants for bit manipulations.
148 #define XFS_NBBYLOG 3 /* log2(NBBY) */
149 #define XFS_WORDLOG 2 /* log2(sizeof(xfs_rtword_t)) */
150 #define XFS_NBWORDLOG (XFS_NBBYLOG + XFS_WORDLOG)
151 #define XFS_NBWORD (1 << XFS_NBWORDLOG)
152 #define XFS_WORDMASK ((1 << XFS_WORDLOG) - 1)
154 struct xfs_iext_cursor {
155 struct xfs_iext_leaf *leaf;
160 XFS_EXT_NORM, XFS_EXT_UNWRITTEN,
163 typedef struct xfs_bmbt_irec
165 xfs_fileoff_t br_startoff; /* starting file offset */
166 xfs_fsblock_t br_startblock; /* starting block number */
167 xfs_filblks_t br_blockcount; /* number of blocks */
168 xfs_exntst_t br_state; /* extent state */
171 enum xfs_refc_domain {
172 XFS_REFC_DOMAIN_SHARED = 0,
176 #define XFS_REFC_DOMAIN_STRINGS \
177 { XFS_REFC_DOMAIN_SHARED, "shared" }, \
178 { XFS_REFC_DOMAIN_COW, "cow" }
180 struct xfs_refcount_irec {
181 xfs_agblock_t rc_startblock; /* starting block number */
182 xfs_extlen_t rc_blockcount; /* count of free blocks */
183 xfs_nlink_t rc_refcount; /* number of inodes linked here */
184 enum xfs_refc_domain rc_domain; /* shared or cow staging extent? */
187 #define XFS_RMAP_ATTR_FORK (1 << 0)
188 #define XFS_RMAP_BMBT_BLOCK (1 << 1)
189 #define XFS_RMAP_UNWRITTEN (1 << 2)
190 #define XFS_RMAP_KEY_FLAGS (XFS_RMAP_ATTR_FORK | \
192 #define XFS_RMAP_REC_FLAGS (XFS_RMAP_UNWRITTEN)
193 struct xfs_rmap_irec {
194 xfs_agblock_t rm_startblock; /* extent start block */
195 xfs_extlen_t rm_blockcount; /* extent length */
196 uint64_t rm_owner; /* extent owner */
197 uint64_t rm_offset; /* offset within the owner */
198 unsigned int rm_flags; /* state flags */
201 /* per-AG block reservation types */
202 enum xfs_ag_resv_type {
203 XFS_AG_RESV_NONE = 0,
205 XFS_AG_RESV_METADATA,
209 /* Results of scanning a btree keyspace to check occupancy. */
210 enum xbtree_recpacking {
211 /* None of the keyspace maps to records. */
212 XBTREE_RECPACKING_EMPTY = 0,
214 /* Some, but not all, of the keyspace maps to records. */
215 XBTREE_RECPACKING_SPARSE,
217 /* The entire keyspace maps to records. */
218 XBTREE_RECPACKING_FULL,
222 * Type verifier functions
226 bool xfs_verify_fsbno(struct xfs_mount *mp, xfs_fsblock_t fsbno);
227 bool xfs_verify_fsbext(struct xfs_mount *mp, xfs_fsblock_t fsbno,
230 bool xfs_verify_ino(struct xfs_mount *mp, xfs_ino_t ino);
231 bool xfs_internal_inum(struct xfs_mount *mp, xfs_ino_t ino);
232 bool xfs_verify_dir_ino(struct xfs_mount *mp, xfs_ino_t ino);
233 bool xfs_verify_rtbno(struct xfs_mount *mp, xfs_rtblock_t rtbno);
234 bool xfs_verify_rtbext(struct xfs_mount *mp, xfs_rtblock_t rtbno,
236 bool xfs_verify_icount(struct xfs_mount *mp, unsigned long long icount);
237 bool xfs_verify_dablk(struct xfs_mount *mp, xfs_fileoff_t off);
238 void xfs_icount_range(struct xfs_mount *mp, unsigned long long *min,
239 unsigned long long *max);
240 bool xfs_verify_fileoff(struct xfs_mount *mp, xfs_fileoff_t off);
241 bool xfs_verify_fileext(struct xfs_mount *mp, xfs_fileoff_t off,
244 #endif /* __XFS_TYPES_H__ */