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 enum { B_FALSE,B_TRUE } boolean_t; 36typedef __uint32_t prid_t; /* project ID */ 37typedef __uint32_t inst_t; /* an instruction */ 38 39typedef __s64 xfs_off_t; /* <file offset> type */ 40typedef unsigned long long xfs_ino_t; /* <inode> type */ 41typedef __s64 xfs_daddr_t; /* <disk address> type */ 42typedef char * xfs_caddr_t; /* <core address> type */ 43typedef __u32 xfs_dev_t; 44typedef __u32 xfs_nlink_t; 45 46/* __psint_t is the same size as a pointer */ 47#if (BITS_PER_LONG == 32) 48typedef __int32_t __psint_t; 49typedef __uint32_t __psunsigned_t; 50#elif (BITS_PER_LONG == 64) 51typedef __int64_t __psint_t; 52typedef __uint64_t __psunsigned_t; 53#else 54#error BITS_PER_LONG must be 32 or 64 55#endif 56 57#endif /* __KERNEL__ */ 58 59typedef __uint32_t xfs_agblock_t; /* blockno in alloc. group */ 60typedef __uint32_t xfs_agino_t; /* inode # within allocation grp */ 61typedef __uint32_t xfs_extlen_t; /* extent length in blocks */ 62typedef __uint32_t xfs_agnumber_t; /* allocation group number */ 63typedef __int32_t xfs_extnum_t; /* # of extents in a file */ 64typedef __int16_t xfs_aextnum_t; /* # extents in an attribute fork */ 65typedef __int64_t xfs_fsize_t; /* bytes in a file */ 66typedef __uint64_t xfs_ufsize_t; /* unsigned bytes in a file */ 67 68typedef __int32_t xfs_suminfo_t; /* type of bitmap summary info */ 69typedef __int32_t xfs_rtword_t; /* word type for bitmap manipulations */ 70 71typedef __int64_t xfs_lsn_t; /* log sequence number */ 72typedef __int32_t xfs_tid_t; /* transaction identifier */ 73 74typedef __uint32_t xfs_dablk_t; /* dir/attr block number (in file) */ 75typedef __uint32_t xfs_dahash_t; /* dir/attr hash value */ 76 77/* 78 * These types are 64 bits on disk but are either 32 or 64 bits in memory. 79 * Disk based types: 80 */ 81typedef __uint64_t xfs_dfsbno_t; /* blockno in filesystem (agno|agbno) */ 82typedef __uint64_t xfs_drfsbno_t; /* blockno in filesystem (raw) */ 83typedef __uint64_t xfs_drtbno_t; /* extent (block) in realtime area */ 84typedef __uint64_t xfs_dfiloff_t; /* block number in a file */ 85typedef __uint64_t xfs_dfilblks_t; /* number of blocks in a file */ 86 87/* 88 * Memory based types are conditional. 89 */ 90#if XFS_BIG_BLKNOS 91typedef __uint64_t xfs_fsblock_t; /* blockno in filesystem (agno|agbno) */ 92typedef __uint64_t xfs_rfsblock_t; /* blockno in filesystem (raw) */ 93typedef __uint64_t xfs_rtblock_t; /* extent (block) in realtime area */ 94typedef __int64_t xfs_srtblock_t; /* signed version of xfs_rtblock_t */ 95#else 96typedef __uint32_t xfs_fsblock_t; /* blockno in filesystem (agno|agbno) */ 97typedef __uint32_t xfs_rfsblock_t; /* blockno in filesystem (raw) */ 98typedef __uint32_t xfs_rtblock_t; /* extent (block) in realtime area */ 99typedef __int32_t xfs_srtblock_t; /* signed version of xfs_rtblock_t */ 100#endif 101typedef __uint64_t xfs_fileoff_t; /* block number in a file */ 102typedef __int64_t xfs_sfiloff_t; /* signed block number in a file */ 103typedef __uint64_t xfs_filblks_t; /* number of blocks in a file */ 104 105 106/* 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#define NULLFSINO ((xfs_ino_t)-1) 126#define NULLAGINO ((xfs_agino_t)-1) 127 128/* 129 * Max values for extlen, extnum, aextnum. 130 */ 131#define MAXEXTLEN ((xfs_extlen_t)0x001fffff) /* 21 bits */ 132#define MAXEXTNUM ((xfs_extnum_t)0x7fffffff) /* signed int */ 133#define MAXAEXTNUM ((xfs_aextnum_t)0x7fff) /* signed short */ 134 135/* 136 * Minimum and maximum blocksize and sectorsize. 137 * The blocksize upper limit is pretty much arbitrary. 138 * The sectorsize upper limit is due to sizeof(sb_sectsize). 139 */ 140#define XFS_MIN_BLOCKSIZE_LOG 9 /* i.e. 512 bytes */ 141#define XFS_MAX_BLOCKSIZE_LOG 16 /* i.e. 65536 bytes */ 142#define XFS_MIN_BLOCKSIZE (1 << XFS_MIN_BLOCKSIZE_LOG) 143#define XFS_MAX_BLOCKSIZE (1 << XFS_MAX_BLOCKSIZE_LOG) 144#define XFS_MIN_SECTORSIZE_LOG 9 /* i.e. 512 bytes */ 145#define XFS_MAX_SECTORSIZE_LOG 15 /* i.e. 32768 bytes */ 146#define XFS_MIN_SECTORSIZE (1 << XFS_MIN_SECTORSIZE_LOG) 147#define XFS_MAX_SECTORSIZE (1 << XFS_MAX_SECTORSIZE_LOG) 148 149/* 150 * Min numbers of data/attr fork btree root pointers. 151 */ 152#define MINDBTPTRS 3 153#define MINABTPTRS 2 154 155/* 156 * MAXNAMELEN is the length (including the terminating null) of 157 * the longest permissible file (component) name. 158 */ 159#define MAXNAMELEN 256 160 161typedef enum { 162 XFS_LOOKUP_EQi, XFS_LOOKUP_LEi, XFS_LOOKUP_GEi 163} xfs_lookup_t; 164 165typedef enum { 166 XFS_BTNUM_BNOi, XFS_BTNUM_CNTi, XFS_BTNUM_BMAPi, XFS_BTNUM_INOi, 167 XFS_BTNUM_MAX 168} xfs_btnum_t; 169 170struct xfs_name { 171 const unsigned char *name; 172 int len; 173}; 174 175#endif /* __XFS_TYPES_H__ */ 176