reactos/boot/freeldr/freeldr/include/fs/iso.h

   1 /*
   2  *  FreeLoader
   3  *  Copyright (C) 1998-2003  Brian Palmer  <brianp@sginet.com>
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18  */
  19
  20 #ifndef __ISO_H
  21 #define __ISO_H
  22
  23
  24 struct _DIR_RECORD
  25 {
  26   UCHAR  RecordLength;                  // 1
  27   UCHAR  ExtAttrRecordLength;           // 2
  28   ULONG  ExtentLocationL;               // 3-6
  29   ULONG  ExtentLocationM;               // 7-10
  30   ULONG  DataLengthL;                   // 11-14
  31   ULONG  DataLengthM;                   // 15-18
  32   UCHAR  Year;                          // 19
  33   UCHAR  Month;                         // 20
  34   UCHAR  Day;                           // 21
  35   UCHAR  Hour;                          // 22
  36   UCHAR  Minute;                        // 23
  37   UCHAR  Second;                        // 24
  38   UCHAR  TimeZone;                      // 25
  39   UCHAR  FileFlags;                     // 26
  40   UCHAR  FileUnitSize;                  // 27
  41   UCHAR  InterleaveGapSize;             // 28
  42   ULONG  VolumeSequenceNumber;          // 29-32
  43   UCHAR  FileIdLength;                  // 33
  44   UCHAR  FileId[1];                     // 34
  45 } __attribute__((packed));
  46
  47 typedef struct _DIR_RECORD DIR_RECORD, *PDIR_RECORD;
  48
  49
  50
  51
  52 /* Volume Descriptor header*/
  53 struct _VD_HEADER
  54 {
  55   UCHAR  VdType;                        // 1
  56   UCHAR  StandardId[5];                 // 2-6
  57   UCHAR  VdVersion;                     // 7
  58 } __attribute__((packed));
  59
  60 typedef struct _VD_HEADER VD_HEADER, *PVD_HEADER;
  61
  62
  63
  64 /* Primary Volume Descriptor */
  65 struct _PVD
  66 {
  67   UCHAR  VdType;                        // 1
  68   CHAR  StandardId[5];                  // 2-6
  69   UCHAR  VdVersion;                     // 7
  70   UCHAR  unused0;                       // 8
  71   CHAR  SystemId[32];                   // 9-40
  72   CHAR  VolumeId[32];                   // 41-72
  73   UCHAR  unused1[8];                    // 73-80
  74   ULONG  VolumeSpaceSizeL;              // 81-84
  75   ULONG  VolumeSpaceSizeM;              // 85-88
  76   UCHAR  unused2[32];                   // 89-120
  77   ULONG  VolumeSetSize;                 // 121-124
  78   ULONG  VolumeSequenceNumber;          // 125-128
  79   ULONG  LogicalBlockSize;              // 129-132
  80   ULONG  PathTableSizeL;                // 133-136
  81   ULONG  PathTableSizeM;                // 137-140
  82   ULONG  LPathTablePos;                 // 141-144
  83   ULONG  LOptPathTablePos;              // 145-148
  84   ULONG  MPathTablePos;                 // 149-152
  85   ULONG  MOptPathTablePos;              // 153-156
  86   DIR_RECORD RootDirRecord;             // 157-190
  87   CHAR  VolumeSetIdentifier[128];       // 191-318
  88   CHAR  PublisherIdentifier[128];       // 319-446
  89
  90   /* more data ... */
  91
  92 } __attribute__((packed));
  93
  94 typedef struct _PVD PVD, *PPVD;
  95
  96
  97
  98 typedef struct
  99 {
 100         ULONG           FileStart;              // File start sector
 101         ULONG           FileSize;               // File size
 102         ULONG           FilePointer;            // File pointer
 103         BOOLEAN Directory;
 104         ULONG           DriveNumber;
 105 } ISO_FILE_INFO, * PISO_FILE_INFO;
 106
 107
 108 BOOLEAN IsoOpenVolume(ULONG DriveNumber);
 109 FILE*   IsoOpenFile(PCSTR FileName);
 110 BOOLEAN IsoReadFile(FILE *FileHandle, ULONG BytesToRead, ULONG* BytesRead, PVOID Buffer);
 111 ULONG           IsoGetFileSize(FILE *FileHandle);
 112 VOID    IsoSetFilePointer(FILE *FileHandle, ULONG NewFilePointer);
 113 ULONG           IsoGetFilePointer(FILE *FileHandle);
 114
 115 #endif // #defined __FAT_H