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Diffstat (limited to 'fs/xfs/xfs_types.h')
| -rw-r--r-- | fs/xfs/xfs_types.h | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/fs/xfs/xfs_types.h b/fs/xfs/xfs_types.h new file mode 100644 index 00000000..32077529 --- /dev/null +++ b/fs/xfs/xfs_types.h @@ -0,0 +1,160 @@ +/* + * Copyright (c) 2000-2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef __XFS_TYPES_H__ +#define __XFS_TYPES_H__ + +#ifdef __KERNEL__ + +/* + * Additional type declarations for XFS + */ +typedef signed char __int8_t; +typedef unsigned char __uint8_t; +typedef signed short int __int16_t; +typedef unsigned short int __uint16_t; +typedef signed int __int32_t; +typedef unsigned int __uint32_t; +typedef signed long long int __int64_t; +typedef unsigned long long int __uint64_t; + +typedef enum { B_FALSE,B_TRUE } boolean_t; +typedef __uint32_t prid_t; /* project ID */ +typedef __uint32_t inst_t; /* an instruction */ + +typedef __s64 xfs_off_t; /* <file offset> type */ +typedef unsigned long long xfs_ino_t; /* <inode> type */ +typedef __s64 xfs_daddr_t; /* <disk address> type */ +typedef char * xfs_caddr_t; /* <core address> type */ +typedef __u32 xfs_dev_t; +typedef __u32 xfs_nlink_t; + +/* __psint_t is the same size as a pointer */ +#if (BITS_PER_LONG == 32) +typedef __int32_t __psint_t; +typedef __uint32_t __psunsigned_t; +#elif (BITS_PER_LONG == 64) +typedef __int64_t __psint_t; +typedef __uint64_t __psunsigned_t; +#else +#error BITS_PER_LONG must be 32 or 64 +#endif + +#endif /* __KERNEL__ */ + +typedef __uint32_t xfs_agblock_t; /* blockno in alloc. group */ +typedef __uint32_t xfs_extlen_t; /* extent length in blocks */ +typedef __uint32_t xfs_agnumber_t; /* allocation group number */ +typedef __int32_t xfs_extnum_t; /* # of extents in a file */ +typedef __int16_t xfs_aextnum_t; /* # extents in an attribute fork */ +typedef __int64_t xfs_fsize_t; /* bytes in a file */ +typedef __uint64_t xfs_ufsize_t; /* unsigned bytes in a file */ + +typedef __int32_t xfs_suminfo_t; /* type of bitmap summary info */ +typedef __int32_t xfs_rtword_t; /* word type for bitmap manipulations */ + +typedef __int64_t xfs_lsn_t; /* log sequence number */ +typedef __int32_t xfs_tid_t; /* transaction identifier */ + +typedef __uint32_t xfs_dablk_t; /* dir/attr block number (in file) */ +typedef __uint32_t xfs_dahash_t; /* dir/attr hash value */ + +typedef __uint16_t xfs_prid_t; /* prid_t truncated to 16bits in XFS */ + +typedef __uint32_t xlog_tid_t; /* transaction ID type */ + +/* + * These types are 64 bits on disk but are either 32 or 64 bits in memory. + * Disk based types: + */ +typedef __uint64_t xfs_dfsbno_t; /* blockno in filesystem (agno|agbno) */ +typedef __uint64_t xfs_drfsbno_t; /* blockno in filesystem (raw) */ +typedef __uint64_t xfs_drtbno_t; /* extent (block) in realtime area */ +typedef __uint64_t xfs_dfiloff_t; /* block number in a file */ +typedef __uint64_t xfs_dfilblks_t; /* number of blocks in a file */ + +/* + * Memory based types are conditional. + */ +#if XFS_BIG_BLKNOS +typedef __uint64_t xfs_fsblock_t; /* blockno in filesystem (agno|agbno) */ +typedef __uint64_t xfs_rfsblock_t; /* blockno in filesystem (raw) */ +typedef __uint64_t xfs_rtblock_t; /* extent (block) in realtime area */ +typedef __int64_t xfs_srtblock_t; /* signed version of xfs_rtblock_t */ +#else +typedef __uint32_t xfs_fsblock_t; /* blockno in filesystem (agno|agbno) */ +typedef __uint32_t xfs_rfsblock_t; /* blockno in filesystem (raw) */ +typedef __uint32_t xfs_rtblock_t; /* extent (block) in realtime area */ +typedef __int32_t xfs_srtblock_t; /* signed version of xfs_rtblock_t */ +#endif +typedef __uint64_t xfs_fileoff_t; /* block number in a file */ +typedef __int64_t xfs_sfiloff_t; /* signed block number in a file */ +typedef __uint64_t xfs_filblks_t; /* number of blocks in a file */ + +/* + * Null values for the types. + */ +#define NULLDFSBNO ((xfs_dfsbno_t)-1) +#define NULLDRFSBNO ((xfs_drfsbno_t)-1) +#define NULLDRTBNO ((xfs_drtbno_t)-1) +#define NULLDFILOFF ((xfs_dfiloff_t)-1) + +#define NULLFSBLOCK ((xfs_fsblock_t)-1) +#define NULLRFSBLOCK ((xfs_rfsblock_t)-1) +#define NULLRTBLOCK ((xfs_rtblock_t)-1) +#define NULLFILEOFF ((xfs_fileoff_t)-1) + +#define NULLAGBLOCK ((xfs_agblock_t)-1) +#define NULLAGNUMBER ((xfs_agnumber_t)-1) +#define NULLEXTNUM ((xfs_extnum_t)-1) + +#define NULLCOMMITLSN ((xfs_lsn_t)-1) + +/* + * Max values for extlen, extnum, aextnum. + */ +#define MAXEXTLEN ((xfs_extlen_t)0x001fffff) /* 21 bits */ +#define MAXEXTNUM ((xfs_extnum_t)0x7fffffff) /* signed int */ +#define MAXAEXTNUM ((xfs_aextnum_t)0x7fff) /* signed short */ + +/* + * Min numbers of data/attr fork btree root pointers. + */ +#define MINDBTPTRS 3 +#define MINABTPTRS 2 + +/* + * MAXNAMELEN is the length (including the terminating null) of + * the longest permissible file (component) name. + */ +#define MAXNAMELEN 256 + +typedef enum { + XFS_LOOKUP_EQi, XFS_LOOKUP_LEi, XFS_LOOKUP_GEi +} xfs_lookup_t; + +typedef enum { + XFS_BTNUM_BNOi, XFS_BTNUM_CNTi, XFS_BTNUM_BMAPi, XFS_BTNUM_INOi, + XFS_BTNUM_MAX +} xfs_btnum_t; + +struct xfs_name { + const unsigned char *name; + int len; +}; + +#endif /* __XFS_TYPES_H__ */ |