Modules/Filesystems/NTFS/index.h

   1 /*
   2  * Acess2 - NTFS Driver
   3  * By John Hodge (thePowersGang)
   4  * This file is published under the terms of the Acess licence. See the
   5  * file COPYING for details.
   6  *
   7  * index.h - Index Types
   8  */
   9 #ifndef _INDEX_H_
  10 #define _INDEX_H_
  11
  12 #include "attributes.h"
  13
  14 typedef struct
  15 {
  16         Uint32  EntryOffset;
  17         Uint32  IndexLength;
  18         Uint32  AllocateSize;
  19         Uint8   Flags;
  20         Uint8   _reserved[3];
  21 } PACKED        tNTFS_IndexHeader;
  22
  23 typedef struct
  24 {
  25         Uint32  Type;
  26         Uint32  CollationRule;
  27         Uint32  IndexBlockSize;
  28         Uint8   ClustersPerIndexBlock;
  29         Uint8   _reserved[3];
  30         tNTFS_IndexHeader       Header;
  31 } PACKED        tNTFS_IndexRoot;
  32
  33 typedef struct
  34 {
  35         union {
  36                 struct {
  37                         Uint64  File;   // MFT Index of file
  38                 } PACKED        Dir;
  39                 /**
  40                  * Views/Indexes
  41                  */
  42                 struct {
  43                         Uint16  DataOffset;
  44                         Uint16  DataLength;
  45                         Uint32  _reserved;
  46                 } PACKED        ViewIndex;
  47         } PACKED        Header;
  48
  49         Uint16  Length; //!< Size of the index entry (multiple of 8 bytes)
  50         Uint16  KeyLength;      //!< Size of key value
  51         Uint16  Flags;  //!< Flags Bitfield
  52         Uint16  _reserved;
  53
  54         /**
  55          * \brief Key Data
  56          * \note Only valid if \a Flags does not have \a INDEX_ENTRY_END set
  57          * \note In NTFS3 only \a Filename is used
  58          */
  59         union {
  60                 tNTFS_Attrib_Filename   Filename;
  61                 //TODO: more key types
  62         } PACKED        Key;
  63 } PACKED        tNTFS_IndexEntry;
  64
  65 #endif