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 enum { B_FALSE,B_TRUE } boolean_t; 36 typedef __uint32_t prid_t; /* project ID */ 37 typedef __uint32_t inst_t; /* an instruction */ 38 39 typedef __s64 xfs_off_t; /* <file offset> type */ 40 typedef unsigned long long xfs_ino_t; /* <inode> type */ 41 typedef __s64 xfs_daddr_t; /* <disk address> type */ 42 typedef char * xfs_caddr_t; /* <core address> type */ 43 typedef __u32 xfs_dev_t; 44 typedef __u32 xfs_nlink_t; 45 46 /* __psint_t is the same size as a pointer */ 47 #if (BITS_PER_LONG == 32) 48 typedef __int32_t __psint_t; 49 typedef __uint32_t __psunsigned_t; 50 #elif (BITS_PER_LONG == 64) 51 typedef __int64_t __psint_t; 52 typedef __uint64_t __psunsigned_t; 53 #else 54 #error BITS_PER_LONG must be 32 or 64 55 #endif 56 57 #endif /* __KERNEL__ */ 58 59 typedef __uint32_t xfs_agblock_t; /* blockno in alloc. group */ 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 typedef __uint32_t xlog_tid_t; /* transaction ID type */ 77 78 /* 79 * These types are 64 bits on disk but are either 32 or 64 bits in memory. 80 * Disk based types: 81 */ 82 typedef __uint64_t xfs_dfsbno_t; /* blockno in filesystem (agno|agbno) */ 83 typedef __uint64_t xfs_drfsbno_t; /* blockno in filesystem (raw) */ 84 typedef __uint64_t xfs_drtbno_t; /* extent (block) in realtime area */ 85 typedef __uint64_t xfs_dfiloff_t; /* block number in a file */ 86 typedef __uint64_t xfs_dfilblks_t; /* number of blocks in a file */ 87 88 /* 89 * Memory based types are conditional. 90 */ 91 #if XFS_BIG_BLKNOS 92 typedef __uint64_t xfs_fsblock_t; /* blockno in filesystem (agno|agbno) */ 93 typedef __uint64_t xfs_rfsblock_t; /* blockno in filesystem (raw) */ 94 typedef __uint64_t xfs_rtblock_t; /* extent (block) in realtime area */ 95 typedef __int64_t xfs_srtblock_t; /* signed version of xfs_rtblock_t */ 96 #else 97 typedef __uint32_t xfs_fsblock_t; /* blockno in filesystem (agno|agbno) */ 98 typedef __uint32_t xfs_rfsblock_t; /* blockno in filesystem (raw) */ 99 typedef __uint32_t xfs_rtblock_t; /* extent (block) in realtime area */ 100 typedef __int32_t xfs_srtblock_t; /* signed version of xfs_rtblock_t */ 101 #endif 102 typedef __uint64_t xfs_fileoff_t; /* block number in a file */ 103 typedef __int64_t xfs_sfiloff_t; /* signed block number in a file */ 104 typedef __uint64_t xfs_filblks_t; /* number of blocks in a file */ 105 106 /* 107 * Null values for the types. 108 */ 109 #define NULLDFSBNO ((xfs_dfsbno_t)-1) 110 #define NULLDRFSBNO ((xfs_drfsbno_t)-1) 111 #define NULLDRTBNO ((xfs_drtbno_t)-1) 112 #define NULLDFILOFF ((xfs_dfiloff_t)-1) 113 114 #define NULLFSBLOCK ((xfs_fsblock_t)-1) 115 #define NULLRFSBLOCK ((xfs_rfsblock_t)-1) 116 #define NULLRTBLOCK ((xfs_rtblock_t)-1) 117 #define NULLFILEOFF ((xfs_fileoff_t)-1) 118 119 #define NULLAGBLOCK ((xfs_agblock_t)-1) 120 #define NULLAGNUMBER ((xfs_agnumber_t)-1) 121 #define NULLEXTNUM ((xfs_extnum_t)-1) 122 123 #define NULLCOMMITLSN ((xfs_lsn_t)-1) 124 125 /* 126 * Max values for extlen, extnum, aextnum. 127 */ 128 #define MAXEXTLEN ((xfs_extlen_t)0x001fffff) /* 21 bits */ 129 #define MAXEXTNUM ((xfs_extnum_t)0x7fffffff) /* signed int */ 130 #define MAXAEXTNUM ((xfs_aextnum_t)0x7fff) /* signed short */ 131 132 /* 133 * Min numbers of data/attr fork btree root pointers. 134 */ 135 #define MINDBTPTRS 3 136 #define MINABTPTRS 2 137 138 /* 139 * MAXNAMELEN is the length (including the terminating null) of 140 * the longest permissible file (component) name. 141 */ 142 #define MAXNAMELEN 256 143 144 typedef enum { 145 XFS_LOOKUP_EQi, XFS_LOOKUP_LEi, XFS_LOOKUP_GEi 146 } xfs_lookup_t; 147 148 typedef enum { 149 XFS_BTNUM_BNOi, XFS_BTNUM_CNTi, XFS_BTNUM_BMAPi, XFS_BTNUM_INOi, 150 XFS_BTNUM_MAX 151 } xfs_btnum_t; 152 153 struct xfs_name { 154 const unsigned char *name; 155 int len; 156 }; 157 158 #endif /* __XFS_TYPES_H__ */ 159