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 */ 26typedef unsigned char uchar_t; 27typedef unsigned short ushort_t; 28typedef unsigned int uint_t; 29typedef unsigned long ulong_t; 30 31/* 32 * Additional type declarations for XFS 33 */ 34typedef signed char __int8_t; 35typedef unsigned char __uint8_t; 36typedef signed short int __int16_t; 37typedef unsigned short int __uint16_t; 38typedef signed int __int32_t; 39typedef unsigned int __uint32_t; 40typedef signed long long int __int64_t; 41typedef unsigned long long int __uint64_t; 42 43typedef enum { B_FALSE,B_TRUE } boolean_t; 44typedef __uint32_t prid_t; /* project ID */ 45typedef __uint32_t inst_t; /* an instruction */ 46 47typedef __s64 xfs_off_t; /* <file offset> type */ 48typedef __u64 xfs_ino_t; /* <inode> type */ 49typedef __s64 xfs_daddr_t; /* <disk address> type */ 50typedef char * xfs_caddr_t; /* <core address> type */ 51typedef __u32 xfs_dev_t; 52typedef __u32 xfs_nlink_t; 53 54/* __psint_t is the same size as a pointer */ 55#if (BITS_PER_LONG == 32) 56typedef __int32_t __psint_t; 57typedef __uint32_t __psunsigned_t; 58#elif (BITS_PER_LONG == 64) 59typedef __int64_t __psint_t; 60typedef __uint64_t __psunsigned_t; 61#else 62#error BITS_PER_LONG must be 32 or 64 63#endif 64 65#endif /* __KERNEL__ */ 66 67typedef __uint32_t xfs_agblock_t; /* blockno in alloc. group */ 68typedef __uint32_t xfs_extlen_t; /* extent length in blocks */ 69typedef __uint32_t xfs_agnumber_t; /* allocation group number */ 70typedef __int32_t xfs_extnum_t; /* # of extents in a file */ 71typedef __int16_t xfs_aextnum_t; /* # extents in an attribute fork */ 72typedef __int64_t xfs_fsize_t; /* bytes in a file */ 73typedef __uint64_t xfs_ufsize_t; /* unsigned bytes in a file */ 74 75typedef __int32_t xfs_suminfo_t; /* type of bitmap summary info */ 76typedef __int32_t xfs_rtword_t; /* word type for bitmap manipulations */ 77 78typedef __int64_t xfs_lsn_t; /* log sequence number */ 79typedef __int32_t xfs_tid_t; /* transaction identifier */ 80 81typedef __uint32_t xfs_dablk_t; /* dir/attr block number (in file) */ 82typedef __uint32_t xfs_dahash_t; /* dir/attr hash value */ 83 84typedef __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 */ 90typedef __uint64_t xfs_dfsbno_t; /* blockno in filesystem (agno|agbno) */ 91typedef __uint64_t xfs_drfsbno_t; /* blockno in filesystem (raw) */ 92typedef __uint64_t xfs_drtbno_t; /* extent (block) in realtime area */ 93typedef __uint64_t xfs_dfiloff_t; /* block number in a file */ 94typedef __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 100typedef __uint64_t xfs_fsblock_t; /* blockno in filesystem (agno|agbno) */ 101typedef __uint64_t xfs_rfsblock_t; /* blockno in filesystem (raw) */ 102typedef __uint64_t xfs_rtblock_t; /* extent (block) in realtime area */ 103typedef __int64_t xfs_srtblock_t; /* signed version of xfs_rtblock_t */ 104#else 105typedef __uint32_t xfs_fsblock_t; /* blockno in filesystem (agno|agbno) */ 106typedef __uint32_t xfs_rfsblock_t; /* blockno in filesystem (raw) */ 107typedef __uint32_t xfs_rtblock_t; /* extent (block) in realtime area */ 108typedef __int32_t xfs_srtblock_t; /* signed version of xfs_rtblock_t */ 109#endif 110typedef __uint64_t xfs_fileoff_t; /* block number in a file */ 111typedef __int64_t xfs_sfiloff_t; /* signed block number in a file */ 112typedef __uint64_t xfs_filblks_t; /* number of blocks in a file */ 113 114typedef __uint8_t xfs_arch_t; /* architecture of an xfs fs */ 115 116/* 117 * Null values for the types. 118 */ 119#define NULLDFSBNO ((xfs_dfsbno_t)-1) 120#define NULLDRFSBNO ((xfs_drfsbno_t)-1) 121#define NULLDRTBNO ((xfs_drtbno_t)-1) 122#define NULLDFILOFF ((xfs_dfiloff_t)-1) 123 124#define NULLFSBLOCK ((xfs_fsblock_t)-1) 125#define NULLRFSBLOCK ((xfs_rfsblock_t)-1) 126#define NULLRTBLOCK ((xfs_rtblock_t)-1) 127#define NULLFILEOFF ((xfs_fileoff_t)-1) 128 129#define NULLAGBLOCK ((xfs_agblock_t)-1) 130#define NULLAGNUMBER ((xfs_agnumber_t)-1) 131#define NULLEXTNUM ((xfs_extnum_t)-1) 132 133#define NULLCOMMITLSN ((xfs_lsn_t)-1) 134 135/* 136 * Max values for extlen, extnum, aextnum. 137 */ 138#define MAXEXTLEN ((xfs_extlen_t)0x001fffff) /* 21 bits */ 139#define MAXEXTNUM ((xfs_extnum_t)0x7fffffff) /* signed int */ 140#define MAXAEXTNUM ((xfs_aextnum_t)0x7fff) /* signed short */ 141 142/* 143 * Min numbers of data/attr fork btree root pointers. 144 */ 145#define MINDBTPTRS 3 146#define MINABTPTRS 2 147 148/* 149 * MAXNAMELEN is the length (including the terminating null) of 150 * the longest permissible file (component) name. 151 */ 152#define MAXNAMELEN 256 153 154typedef struct xfs_dirent { /* data from readdir() */ 155 xfs_ino_t d_ino; /* inode number of entry */ 156 xfs_off_t d_off; /* offset of disk directory entry */ 157 unsigned short d_reclen; /* length of this record */ 158 char d_name[1]; /* name of file */ 159} xfs_dirent_t; 160 161#define DIRENTBASESIZE (((xfs_dirent_t *)0)->d_name - (char *)0) 162#define DIRENTSIZE(namelen) \ 163 ((DIRENTBASESIZE + (namelen) + \ 164 sizeof(xfs_off_t)) & ~(sizeof(xfs_off_t) - 1)) 165 166typedef enum { 167 XFS_LOOKUP_EQi, XFS_LOOKUP_LEi, XFS_LOOKUP_GEi 168} xfs_lookup_t; 169 170typedef enum { 171 XFS_BTNUM_BNOi, XFS_BTNUM_CNTi, XFS_BTNUM_BMAPi, XFS_BTNUM_INOi, 172 XFS_BTNUM_MAX 173} xfs_btnum_t; 174 175#endif /* __XFS_TYPES_H__ */ 176