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 */ 26typedef signed char __int8_t; 27typedef unsigned char __uint8_t; 28typedef signed short int __int16_t; 29typedef unsigned short int __uint16_t; 30typedef signed int __int32_t; 31typedef unsigned int __uint32_t; 32typedef signed long long int __int64_t; 33typedef unsigned long long int __uint64_t; 34 35typedef __uint32_t prid_t; /* project ID */ 36typedef __uint32_t inst_t; /* an instruction */ 37 38typedef __s64 xfs_off_t; /* <file offset> type */ 39typedef unsigned long long xfs_ino_t; /* <inode> type */ 40typedef __s64 xfs_daddr_t; /* <disk address> type */ 41typedef char * xfs_caddr_t; /* <core address> type */ 42typedef __u32 xfs_dev_t; 43typedef __u32 xfs_nlink_t; 44 45/* __psint_t is the same size as a pointer */ 46#if (BITS_PER_LONG == 32) 47typedef __int32_t __psint_t; 48typedef __uint32_t __psunsigned_t; 49#elif (BITS_PER_LONG == 64) 50typedef __int64_t __psint_t; 51typedef __uint64_t __psunsigned_t; 52#else 53#error BITS_PER_LONG must be 32 or 64 54#endif 55 56#endif /* __KERNEL__ */ 57 58typedef __uint32_t xfs_agblock_t; /* blockno in alloc. group */ 59typedef __uint32_t xfs_agino_t; /* inode # within allocation grp */ 60typedef __uint32_t xfs_extlen_t; /* extent length in blocks */ 61typedef __uint32_t xfs_agnumber_t; /* allocation group number */ 62typedef __int32_t xfs_extnum_t; /* # of extents in a file */ 63typedef __int16_t xfs_aextnum_t; /* # extents in an attribute fork */ 64typedef __int64_t xfs_fsize_t; /* bytes in a file */ 65typedef __uint64_t xfs_ufsize_t; /* unsigned bytes in a file */ 66 67typedef __int32_t xfs_suminfo_t; /* type of bitmap summary info */ 68typedef __int32_t xfs_rtword_t; /* word type for bitmap manipulations */ 69 70typedef __int64_t xfs_lsn_t; /* log sequence number */ 71typedef __int32_t xfs_tid_t; /* transaction identifier */ 72 73typedef __uint32_t xfs_dablk_t; /* dir/attr block number (in file) */ 74typedef __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 */ 80typedef __uint64_t xfs_dfsbno_t; /* blockno in filesystem (agno|agbno) */ 81typedef __uint64_t xfs_drfsbno_t; /* blockno in filesystem (raw) */ 82typedef __uint64_t xfs_drtbno_t; /* extent (block) in realtime area */ 83typedef __uint64_t xfs_dfiloff_t; /* block number in a file */ 84typedef __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 90typedef __uint64_t xfs_fsblock_t; /* blockno in filesystem (agno|agbno) */ 91typedef __uint64_t xfs_rfsblock_t; /* blockno in filesystem (raw) */ 92typedef __uint64_t xfs_rtblock_t; /* extent (block) in realtime area */ 93typedef __int64_t xfs_srtblock_t; /* signed version of xfs_rtblock_t */ 94#else 95typedef __uint32_t xfs_fsblock_t; /* blockno in filesystem (agno|agbno) */ 96typedef __uint32_t xfs_rfsblock_t; /* blockno in filesystem (raw) */ 97typedef __uint32_t xfs_rtblock_t; /* extent (block) in realtime area */ 98typedef __int32_t xfs_srtblock_t; /* signed version of xfs_rtblock_t */ 99#endif 100typedef __uint64_t xfs_fileoff_t; /* block number in a file */ 101typedef __int64_t xfs_sfiloff_t; /* signed block number in a file */ 102typedef __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 160typedef enum { 161 XFS_LOOKUP_EQi, XFS_LOOKUP_LEi, XFS_LOOKUP_GEi 162} xfs_lookup_t; 163 164typedef enum { 165 XFS_BTNUM_BNOi, XFS_BTNUM_CNTi, XFS_BTNUM_BMAPi, XFS_BTNUM_INOi, 166 XFS_BTNUM_MAX 167} xfs_btnum_t; 168 169struct xfs_name { 170 const unsigned char *name; 171 int len; 172}; 173 174#endif /* __XFS_TYPES_H__ */ 175