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