xfs_types.h
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/*
* Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 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.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write the Free Software Foundation, Inc., 59
* Temple Place - Suite 330, Boston MA 02111-1307, USA.
*
* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
* Mountain View, CA 94043, or:
*
* http://www.sgi.com
*
* For further information regarding this notice, see:
*
* http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
*/
#ifndef __XFS_TYPES_H__
#define __XFS_TYPES_H__
#ifdef __KERNEL__
/*
* POSIX Extensions
*/
typedef unsigned char uchar_t;
typedef unsigned short ushort_t;
typedef unsigned int uint_t;
typedef unsigned long ulong_t;
/*
* 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 __u64 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 */
/*
* 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 */
typedef __uint8_t xfs_arch_t; /* architecture of an xfs fs */
/*
* 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 */
/*
* MAXNAMELEN is the length (including the terminating null) of
* the longest permissible file (component) name.
*/
#define MAXNAMELEN 256
typedef struct xfs_dirent { /* data from readdir() */
xfs_ino_t d_ino; /* inode number of entry */
xfs_off_t d_off; /* offset of disk directory entry */
unsigned short d_reclen; /* length of this record */
char d_name[1]; /* name of file */
} xfs_dirent_t;
#define DIRENTBASESIZE (((xfs_dirent_t *)0)->d_name - (char *)0)
#define DIRENTSIZE(namelen) \
((DIRENTBASESIZE + (namelen) + \
sizeof(xfs_off_t)) & ~(sizeof(xfs_off_t) - 1))
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;
#endif /* __XFS_TYPES_H__ */