/*

   * 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 */

  /*
   * 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__ */