code.delx.au - refind/blob - filesystems/fsw_reiserfs.h

   1 /**
   2  * \file fsw_reiserfs.h
   3  * ReiserFS file system driver header.
   4  */
   5
   6 /*-
   7  * Copyright (c) 2006 Christoph Pfisterer
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License
  11  * as published by the Free Software Foundation; either version 2
  12  * of the License, or (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  22  */
  23
  24 #ifndef _FSW_REISERFS_H_
  25 #define _FSW_REISERFS_H_
  26
  27 #define VOLSTRUCTNAME fsw_reiserfs_volume
  28 #define DNODESTRUCTNAME fsw_reiserfs_dnode
  29 #include "fsw_core.h"
  30
  31 #include "fsw_reiserfs_disk.h"
  32
  33
  34 //! Block size (in shift bits) to be used when reading the reiserfs superblock.
  35 #define REISERFS_SUPERBLOCK_BLOCKSIZEBITS  12
  36 //! Block size (in bytes) to be used when reading the reiserfs superblock.
  37 #define REISERFS_SUPERBLOCK_BLOCKSIZE  (1<<REISERFS_SUPERBLOCK_BLOCKSIZEBITS)
  38
  39
  40 /**
  41  * ReiserFS: Results from a tree search.
  42  */
  43
  44 struct fsw_reiserfs_item {
  45     int valid;
  46
  47     // the found item
  48     struct item_head ih;
  49     fsw_u64 item_offset;
  50     fsw_u32 item_type;
  51
  52     fsw_u8 *item_data;
  53
  54     // path information
  55     fsw_u32 path_bno[MAX_HEIGHT];
  56     fsw_u32 path_index[MAX_HEIGHT];
  57
  58     // block release information
  59     fsw_u32 block_bno;
  60     void *block_buffer;
  61 };
  62
  63
  64 /**
  65  * ReiserFS: Volume structure with reiserfs-specific data.
  66  */
  67
  68 struct fsw_reiserfs_volume {
  69     struct fsw_volume g;            //!< Generic volume structure
  70
  71     struct reiserfs_super_block *sb;  //!< Full raw reiserfs superblock structure
  72     int version;                    //!< Flag for 3.5 or 3.6 format
  73 };
  74
  75 /**
  76  * ReiserFS: Dnode structure with reiserfs-specific data.
  77  */
  78
  79 struct fsw_reiserfs_dnode {
  80     struct fsw_dnode g;             //!< Generic dnode structure
  81
  82     fsw_u32 dir_id;                 //!< Locality ID for the reiserfs tree (parent dir id)
  83     struct stat_data_v1 *sd_v1;     //!< Full stat_data, version 1
  84     struct stat_data *sd_v2;        //!< Full stat_data, version 2
  85 };
  86
  87
  88 #endif