1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (c) 2000-2005 Silicon Graphics, Inc. 4 * All Rights Reserved. 5 */ 6 #ifndef __XFS_TYPES_H__ 7 #define __XFS_TYPES_H__ 8 9 typedef uint32_t prid_t; /* project ID */ 10 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 */ 19 20 typedef int32_t xfs_suminfo_t; /* type of bitmap summary info */ 21 typedef uint32_t xfs_rtword_t; /* word type for bitmap manipulations */ 22 23 typedef int64_t xfs_lsn_t; /* log sequence number */ 24 typedef int32_t xfs_tid_t; /* transaction identifier */ 25 26 typedef uint32_t xfs_dablk_t; /* dir/attr block number (in file) */ 27 typedef uint32_t xfs_dahash_t; /* dir/attr hash value */ 28 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 */ 34 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 */ 37 38 /* 39 * New verifiers will return the instruction address of the failing check. 40 * NULL means everything is ok. 41 */ 42 typedef void * xfs_failaddr_t; 43 44 /* 45 * Null values for the types. 46 */ 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) 51 52 #define NULLAGBLOCK ((xfs_agblock_t)-1) 53 #define NULLAGNUMBER ((xfs_agnumber_t)-1) 54 55 #define NULLCOMMITLSN ((xfs_lsn_t)-1) 56 57 #define NULLFSINO ((xfs_ino_t)-1) 58 #define NULLAGINO ((xfs_agino_t)-1) 59 60 /* 61 * Max values for extlen, extnum, aextnum. 62 */ 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 */ 66 67 /* 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 72 * cannot be used. 73 */ 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) 83 84 /* 85 * Inode fork identifiers. 86 */ 87 #define XFS_DATA_FORK 0 88 #define XFS_ATTR_FORK 1 89 #define XFS_COW_FORK 2 90 91 /* 92 * Min numbers of data/attr fork btree root pointers. 93 */ 94 #define MINDBTPTRS 3 95 #define MINABTPTRS 2 96 97 /* 98 * MAXNAMELEN is the length (including the terminating null) of 99 * the longest permissible file (component) name. 100 */ 101 #define MAXNAMELEN 256 102 103 typedef enum { 104 XFS_LOOKUP_EQi, XFS_LOOKUP_LEi, XFS_LOOKUP_GEi 105 } xfs_lookup_t; 106 107 typedef enum { 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 110 } xfs_btnum_t; 111 112 struct xfs_name { 113 const unsigned char *name; 114 int len; 115 int type; 116 }; 117 118 /* 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.. 121 */ 122 typedef uint32_t xfs_dqid_t; 123 124 /* 125 * Constants for bit manipulations. 126 */ 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) 132 133 struct xfs_iext_cursor { 134 struct xfs_iext_leaf *leaf; 135 int pos; 136 }; 137 138 typedef enum { 139 XFS_EXT_NORM, XFS_EXT_UNWRITTEN, 140 } xfs_exntst_t; 141 142 typedef struct xfs_bmbt_irec 143 { 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 */ 148 } xfs_bmbt_irec_t; 149 150 /* 151 * Type verifier functions 152 */ 153 struct xfs_mount; 154 155 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); 159 160 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, 163 xfs_agino_t agino); 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); 169 170 #endif /* __XFS_TYPES_H__ */ 171