#ifndef __LINUX_UDF_SB_H
  #define __LINUX_UDF_SB_H
  
  /* Since UDF 2.01 is ISO 13346 based... */
  #define UDF_SUPER_MAGIC			0x15013346
  
  #define UDF_MAX_READ_VERSION		0x0201
  #define UDF_MAX_WRITE_VERSION		0x0201
  
  #define UDF_FLAG_USE_EXTENDED_FE	0
  #define UDF_VERS_USE_EXTENDED_FE	0x0200
  #define UDF_FLAG_USE_STREAMS		1
  #define UDF_VERS_USE_STREAMS		0x0200
  #define UDF_FLAG_USE_SHORT_AD		2
  #define UDF_FLAG_USE_AD_IN_ICB		3
  #define UDF_FLAG_USE_FILE_CTIME_EA	4
  #define UDF_FLAG_STRICT			5
  #define UDF_FLAG_UNDELETE		6
  #define UDF_FLAG_UNHIDE			7
  #define UDF_FLAG_VARCONV		8
  #define UDF_FLAG_NLS_MAP		9
  #define UDF_FLAG_UTF8			10

  #define UDF_FLAG_UID_FORGET     11    /* save -1 for uid to disk */
  #define UDF_FLAG_UID_IGNORE     12    /* use sb uid instead of on disk uid */

  #define UDF_FLAG_GID_FORGET     13
  #define UDF_FLAG_GID_IGNORE     14

  
  #define UDF_PART_FLAG_UNALLOC_BITMAP	0x0001
  #define UDF_PART_FLAG_UNALLOC_TABLE	0x0002
  #define UDF_PART_FLAG_FREED_BITMAP	0x0004
  #define UDF_PART_FLAG_FREED_TABLE	0x0008
  #define UDF_PART_FLAG_READ_ONLY		0x0010
  #define UDF_PART_FLAG_WRITE_ONCE	0x0020
  #define UDF_PART_FLAG_REWRITABLE	0x0040
  #define UDF_PART_FLAG_OVERWRITABLE	0x0080
  
  static inline struct udf_sb_info *UDF_SB(struct super_block *sb)
  {
  	return sb->s_fs_info;
  }
  
  #define UDF_SB_FREE(X)\
  {\

  	if (UDF_SB(X)) {\

  		kfree(UDF_SB_PARTMAPS(X));\

  		UDF_SB_PARTMAPS(X) = NULL;\
  	}\
  }
  
  #define UDF_SB_ALLOC_PARTMAPS(X,Y)\
  {\
  	UDF_SB_PARTMAPS(X) = kmalloc(sizeof(struct udf_part_map) * Y, GFP_KERNEL);\

  	if (UDF_SB_PARTMAPS(X) != NULL) {\

  		UDF_SB_NUMPARTS(X) = Y;\
  		memset(UDF_SB_PARTMAPS(X), 0x00, sizeof(struct udf_part_map) * Y);\

  	} else {\

  		UDF_SB_NUMPARTS(X) = 0;\
  		udf_error(X, __FUNCTION__, "Unable to allocate space for %d partition maps", Y);\
  	}\
  }
  
  #define UDF_SB_ALLOC_BITMAP(X,Y,Z)\
  {\
  	int nr_groups = ((UDF_SB_PARTLEN((X),(Y)) + (sizeof(struct spaceBitmapDesc) << 3) +\
  		((X)->s_blocksize * 8) - 1) / ((X)->s_blocksize * 8));\
  	int size = sizeof(struct udf_bitmap) + (sizeof(struct buffer_head *) * nr_groups);\
  	if (size <= PAGE_SIZE)\
  		UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap = kmalloc(size, GFP_KERNEL);\
  	else\
  		UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap = vmalloc(size);\

  	if (UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap != NULL) {\

  		memset(UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap, 0x00, size);\
  		UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_block_bitmap =\
  			(struct buffer_head **)(UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap + 1);\
  		UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_nr_groups = nr_groups;\

  	} else {\

  		udf_error(X, __FUNCTION__, "Unable to allocate space for bitmap and %d buffer_head pointers", nr_groups);\
  	}\
  }
  
  #define UDF_SB_FREE_BITMAP(X,Y,Z)\
  {\
  	int i;\
  	int nr_groups = UDF_SB_BITMAP_NR_GROUPS(X,Y,Z);\
  	int size = sizeof(struct udf_bitmap) + (sizeof(struct buffer_head *) * nr_groups);\

  	for (i = 0; i < nr_groups; i++) {\

  		if (UDF_SB_BITMAP(X,Y,Z,i))\

  			brelse(UDF_SB_BITMAP(X,Y,Z,i));\

  	}\
  	if (size <= PAGE_SIZE)\
  		kfree(UDF_SB_PARTMAPS(X)[Y].Z.s_bitmap);\
  	else\
  		vfree(UDF_SB_PARTMAPS(X)[Y].Z.s_bitmap);\
  }
  
  #define UDF_QUERY_FLAG(X,Y)			( UDF_SB(X)->s_flags & ( 1 << (Y) ) )
  #define UDF_SET_FLAG(X,Y)			( UDF_SB(X)->s_flags |= ( 1 << (Y) ) )
  #define UDF_CLEAR_FLAG(X,Y)			( UDF_SB(X)->s_flags &= ~( 1 << (Y) ) )
  
  #define UDF_UPDATE_UDFREV(X,Y)			( ((Y) > UDF_SB_UDFREV(X)) ? UDF_SB_UDFREV(X) = (Y) : UDF_SB_UDFREV(X) )
  
  #define UDF_SB_PARTMAPS(X)			( UDF_SB(X)->s_partmaps )
  #define UDF_SB_PARTTYPE(X,Y)			( UDF_SB_PARTMAPS(X)[(Y)].s_partition_type )
  #define UDF_SB_PARTROOT(X,Y)			( UDF_SB_PARTMAPS(X)[(Y)].s_partition_root )
  #define UDF_SB_PARTLEN(X,Y)			( UDF_SB_PARTMAPS(X)[(Y)].s_partition_len )
  #define UDF_SB_PARTVSN(X,Y)			( UDF_SB_PARTMAPS(X)[(Y)].s_volumeseqnum )
  #define UDF_SB_PARTNUM(X,Y)			( UDF_SB_PARTMAPS(X)[(Y)].s_partition_num )
  #define UDF_SB_TYPESPAR(X,Y)			( UDF_SB_PARTMAPS(X)[(Y)].s_type_specific.s_sparing )
  #define UDF_SB_TYPEVIRT(X,Y)			( UDF_SB_PARTMAPS(X)[(Y)].s_type_specific.s_virtual )
  #define UDF_SB_PARTFUNC(X,Y)			( UDF_SB_PARTMAPS(X)[(Y)].s_partition_func )
  #define UDF_SB_PARTFLAGS(X,Y)			( UDF_SB_PARTMAPS(X)[(Y)].s_partition_flags )
  #define UDF_SB_BITMAP(X,Y,Z,I)			( UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_block_bitmap[I] )
  #define UDF_SB_BITMAP_NR_GROUPS(X,Y,Z)		( UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_nr_groups )
  
  #define UDF_SB_VOLIDENT(X)			( UDF_SB(X)->s_volident )
  #define UDF_SB_NUMPARTS(X)			( UDF_SB(X)->s_partitions )
  #define UDF_SB_PARTITION(X)			( UDF_SB(X)->s_partition )
  #define UDF_SB_SESSION(X)			( UDF_SB(X)->s_session )
  #define UDF_SB_ANCHOR(X)			( UDF_SB(X)->s_anchor )
  #define UDF_SB_LASTBLOCK(X)			( UDF_SB(X)->s_lastblock )
  #define UDF_SB_LVIDBH(X)			( UDF_SB(X)->s_lvidbh )
  #define UDF_SB_LVID(X)				( (struct logicalVolIntegrityDesc *)UDF_SB_LVIDBH(X)->b_data )
  #define UDF_SB_LVIDIU(X)			( (struct logicalVolIntegrityDescImpUse *)&(UDF_SB_LVID(X)->impUse[le32_to_cpu(UDF_SB_LVID(X)->numOfPartitions) * 2 * sizeof(uint32_t)/sizeof(uint8_t)]) )
  
  #define UDF_SB_UMASK(X)				( UDF_SB(X)->s_umask )
  #define UDF_SB_GID(X)				( UDF_SB(X)->s_gid )
  #define UDF_SB_UID(X)				( UDF_SB(X)->s_uid )
  #define UDF_SB_RECORDTIME(X)			( UDF_SB(X)->s_recordtime )
  #define UDF_SB_SERIALNUM(X)			( UDF_SB(X)->s_serialnum )
  #define UDF_SB_UDFREV(X)			( UDF_SB(X)->s_udfrev )
  #define UDF_SB_FLAGS(X)				( UDF_SB(X)->s_flags )
  #define UDF_SB_VAT(X)				( UDF_SB(X)->s_vat )

  #endif /* __LINUX_UDF_SB_H */