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 * Additional type declarations for XFS 25 */ 26 typedef signed char __int8_t; 27 typedef unsigned char __uint8_t; 28 typedef signed short int __int16_t; 29 typedef unsigned short int __uint16_t; 30 typedef signed int __int32_t; 31 typedef unsigned int __uint32_t; 32 typedef signed long long int __int64_t; 33 typedef unsigned long long int __uint64_t; 34 35 typedef __uint32_t prid_t; /* project ID */ 36 typedef __uint32_t inst_t; /* an instruction */ 37 38 typedef __s64 xfs_off_t; /* <file offset> type */ 39 typedef unsigned long long xfs_ino_t; /* <inode> type */ 40 typedef __s64 xfs_daddr_t; /* <disk address> type */ 41 typedef char * xfs_caddr_t; /* <core address> type */ 42 typedef __u32 xfs_dev_t; 43 typedef __u32 xfs_nlink_t; 44 45 /* __psint_t is the same size as a pointer */ 46 #if (BITS_PER_LONG == 32) 47 typedef __int32_t __psint_t; 48 typedef __uint32_t __psunsigned_t; 49 #elif (BITS_PER_LONG == 64) 50 typedef __int64_t __psint_t; 51 typedef __uint64_t __psunsigned_t; 52 #else 53 #error BITS_PER_LONG must be 32 or 64 54 #endif 55 56 #endif /* __KERNEL__ */ 57 58 typedef __uint32_t xfs_agblock_t; /* blockno in alloc. group */ 59 typedef __uint32_t xfs_agino_t; /* inode # within allocation grp */ 60 typedef __uint32_t xfs_extlen_t; /* extent length in blocks */ 61 typedef __uint32_t xfs_agnumber_t; /* allocation group number */ 62 typedef __int32_t xfs_extnum_t; /* # of extents in a file */ 63 typedef __int16_t xfs_aextnum_t; /* # extents in an attribute fork */ 64 typedef __int64_t xfs_fsize_t; /* bytes in a file */ 65 typedef __uint64_t xfs_ufsize_t; /* unsigned bytes in a file */ 66 67 typedef __int32_t xfs_suminfo_t; /* type of bitmap summary info */ 68 typedef __int32_t xfs_rtword_t; /* word type for bitmap manipulations */ 69 70 typedef __int64_t xfs_lsn_t; /* log sequence number */ 71 typedef __int32_t xfs_tid_t; /* transaction identifier */ 72 73 typedef __uint32_t xfs_dablk_t; /* dir/attr block number (in file) */ 74 typedef __uint32_t xfs_dahash_t; /* dir/attr hash value */ 75 76 /* 77 * These types are 64 bits on disk but are either 32 or 64 bits in memory. 78 * Disk based types: 79 */ 80 typedef __uint64_t xfs_dfsbno_t; /* blockno in filesystem (agno|agbno) */ 81 typedef __uint64_t xfs_drfsbno_t; /* blockno in filesystem (raw) */ 82 typedef __uint64_t xfs_drtbno_t; /* extent (block) in realtime area */ 83 typedef __uint64_t xfs_dfiloff_t; /* block number in a file */ 84 typedef __uint64_t xfs_dfilblks_t; /* number of blocks in a file */ 85 86 /* 87 * Memory based types are conditional. 88 */ 89 #if XFS_BIG_BLKNOS 90 typedef __uint64_t xfs_fsblock_t; /* blockno in filesystem (agno|agbno) */ 91 typedef __uint64_t xfs_rfsblock_t; /* blockno in filesystem (raw) */ 92 typedef __uint64_t xfs_rtblock_t; /* extent (block) in realtime area */ 93 typedef __int64_t xfs_srtblock_t; /* signed version of xfs_rtblock_t */ 94 #else 95 typedef __uint32_t xfs_fsblock_t; /* blockno in filesystem (agno|agbno) */ 96 typedef __uint32_t xfs_rfsblock_t; /* blockno in filesystem (raw) */ 97 typedef __uint32_t xfs_rtblock_t; /* extent (block) in realtime area */ 98 typedef __int32_t xfs_srtblock_t; /* signed version of xfs_rtblock_t */ 99 #endif 100 typedef __uint64_t xfs_fileoff_t; /* block number in a file */ 101 typedef __int64_t xfs_sfiloff_t; /* signed block number in a file */ 102 typedef __uint64_t xfs_filblks_t; /* number of blocks in a file */ 103 104 105 /* 106 * Null values for the types. 107 */ 108 #define NULLDFSBNO ((xfs_dfsbno_t)-1) 109 #define NULLDRFSBNO ((xfs_drfsbno_t)-1) 110 #define NULLDRTBNO ((xfs_drtbno_t)-1) 111 #define NULLDFILOFF ((xfs_dfiloff_t)-1) 112 113 #define NULLFSBLOCK ((xfs_fsblock_t)-1) 114 #define NULLRFSBLOCK ((xfs_rfsblock_t)-1) 115 #define NULLRTBLOCK ((xfs_rtblock_t)-1) 116 #define NULLFILEOFF ((xfs_fileoff_t)-1) 117 118 #define NULLAGBLOCK ((xfs_agblock_t)-1) 119 #define NULLAGNUMBER ((xfs_agnumber_t)-1) 120 #define NULLEXTNUM ((xfs_extnum_t)-1) 121 122 #define NULLCOMMITLSN ((xfs_lsn_t)-1) 123 124 #define NULLFSINO ((xfs_ino_t)-1) 125 #define NULLAGINO ((xfs_agino_t)-1) 126 127 /* 128 * Max values for extlen, extnum, aextnum. 129 */ 130 #define MAXEXTLEN ((xfs_extlen_t)0x001fffff) /* 21 bits */ 131 #define MAXEXTNUM ((xfs_extnum_t)0x7fffffff) /* signed int */ 132 #define MAXAEXTNUM ((xfs_aextnum_t)0x7fff) /* signed short */ 133 134 /* 135 * Minimum and maximum blocksize and sectorsize. 136 * The blocksize upper limit is pretty much arbitrary. 137 * The sectorsize upper limit is due to sizeof(sb_sectsize). 138 */ 139 #define XFS_MIN_BLOCKSIZE_LOG 9 /* i.e. 512 bytes */ 140 #define XFS_MAX_BLOCKSIZE_LOG 16 /* i.e. 65536 bytes */ 141 #define XFS_MIN_BLOCKSIZE (1 << XFS_MIN_BLOCKSIZE_LOG) 142 #define XFS_MAX_BLOCKSIZE (1 << XFS_MAX_BLOCKSIZE_LOG) 143 #define XFS_MIN_SECTORSIZE_LOG 9 /* i.e. 512 bytes */ 144 #define XFS_MAX_SECTORSIZE_LOG 15 /* i.e. 32768 bytes */ 145 #define XFS_MIN_SECTORSIZE (1 << XFS_MIN_SECTORSIZE_LOG) 146 #define XFS_MAX_SECTORSIZE (1 << XFS_MAX_SECTORSIZE_LOG) 147 148 /* 149 * Min numbers of data/attr fork btree root pointers. 150 */ 151 #define MINDBTPTRS 3 152 #define MINABTPTRS 2 153 154 /* 155 * MAXNAMELEN is the length (including the terminating null) of 156 * the longest permissible file (component) name. 157 */ 158 #define MAXNAMELEN 256 159 160 typedef enum { 161 XFS_LOOKUP_EQi, XFS_LOOKUP_LEi, XFS_LOOKUP_GEi 162 } xfs_lookup_t; 163 164 typedef enum { 165 XFS_BTNUM_BNOi, XFS_BTNUM_CNTi, XFS_BTNUM_BMAPi, XFS_BTNUM_INOi, 166 XFS_BTNUM_MAX 167 } xfs_btnum_t; 168 169 struct xfs_name { 170 const unsigned char *name; 171 int len; 172 }; 173 174 #endif /* __XFS_TYPES_H__ */ 175