reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/dos.h

   1 /*
   2  * COPYRIGHT:       GPL - See COPYING in the top level directory
   3  * PROJECT:         ReactOS Virtual DOS Machine
   4  * FILE:            dos/dos32krnl/dos.h
   5  * PURPOSE:         DOS32 Kernel
   6  * PROGRAMMERS:     Aleksandar Andrejevic <theflash AT sdf DOT lonestar DOT org>
   7  */
   8
   9 #ifndef _DOS_H_
  10 #define _DOS_H_
  11
  12 /* INCLUDES *******************************************************************/
  13
  14 #include "device.h"
  15
  16 /**/ #include "int32.h" /**/
  17
  18 /* DEFINES ********************************************************************/
  19
  20 //
  21 // We are DOS 5.00 (reported by INT 21h, AH=30h)
  22 //    and DOS 5.50 (reported by INT 21h, AX=3306h) for Windows NT Compatibility
  23 //
  24 #define DOS_VERSION     MAKEWORD(5, 00)
  25 #define NTDOS_VERSION   MAKEWORD(5, 50)
  26
  27 #define DOS_CONFIG_PATH L"%SystemRoot%\\system32\\CONFIG.NT"
  28 #define DOS_COMMAND_INTERPRETER L"%SystemRoot%\\system32\\COMMAND.COM /k %SystemRoot%\\system32\\AUTOEXEC.NT"
  29 #define FIRST_MCB_SEGMENT 0x1000
  30 #define USER_MEMORY_SIZE (0x9FFE - FIRST_MCB_SEGMENT)
  31 #define SYSTEM_PSP 0x08
  32 #define SYSTEM_ENV_BLOCK 0x800
  33 #define DOS_CODE_SEGMENT 0x70
  34 #define DOS_DATA_SEGMENT 0xA0
  35 #define MASTER_SFT_OFFSET 0x100
  36
  37 #define INVALID_DOS_HANDLE  0xFFFF
  38 #define DOS_INPUT_HANDLE    0
  39 #define DOS_OUTPUT_HANDLE   1
  40 #define DOS_ERROR_HANDLE    2
  41
  42 #define DOS_SFT_SIZE 255
  43 #define UMB_START_SEGMENT 0xC000
  44 #define UMB_END_SEGMENT 0xDFFF
  45 #define DOS_ALLOC_HIGH 0x40
  46 #define DOS_ALLOC_HIGH_LOW 0x80
  47 #define DOS_DIR_LENGTH 64
  48 #define NUM_DRIVES ('Z' - 'A' + 1)
  49 #define DOS_CHAR_ATTRIBUTE 0x07
  50
  51 /* 16 MB of EMS memory */
  52 #define EMS_TOTAL_PAGES 1024
  53
  54 #pragma pack(push, 1)
  55
  56 typedef struct _DOS_FCB
  57 {
  58     BYTE DriveNumber;
  59     CHAR FileName[8];
  60     CHAR FileExt[3];
  61     WORD BlockNumber;
  62     WORD RecordSize;
  63     DWORD FileSize;
  64     WORD LastWriteDate;
  65     WORD LastWriteTime;
  66     BYTE Reserved[8];
  67     BYTE BlockRecord;
  68     BYTE RecordNumber[3];
  69 } DOS_FCB, *PDOS_FCB;
  70
  71 typedef struct _DOS_SYSVARS
  72 {
  73     DWORD OemHandler;
  74     WORD Int21hReturn;
  75     WORD ShareRetryCount;
  76     WORD ShareRetryDelay;
  77     DWORD DiskBuffer;
  78     WORD UnreadConInput;
  79     WORD FirstMcb;
  80
  81     /* This is where the SYSVARS really start */
  82     DWORD FirstDpb;
  83     DWORD FirstSft;
  84     DWORD ActiveClock;
  85     DWORD ActiveCon;
  86     BYTE Reserved0[6];
  87     DWORD CurrentDirs;
  88     BYTE Reserved1[6];
  89     BYTE NumBlockDevices;
  90     BYTE NumLocalDrives;
  91     DOS_DRIVER NullDevice;
  92     BYTE NullDriverRoutine[7];
  93 } DOS_SYSVARS, *PDOS_SYSVARS;
  94
  95 typedef struct _DOS_INPUT_BUFFER
  96 {
  97     BYTE MaxLength;
  98     BYTE Length;
  99     CHAR Buffer[ANYSIZE_ARRAY];
 100 } DOS_INPUT_BUFFER, *PDOS_INPUT_BUFFER;
 101
 102 typedef struct _DOS_FIND_FILE_BLOCK
 103 {
 104     CHAR DriveLetter;
 105     CHAR Pattern[11];
 106     UCHAR AttribMask;
 107     DWORD Unused;
 108     HANDLE SearchHandle;
 109
 110     /* The following part of the structure is documented */
 111     UCHAR Attributes;
 112     WORD FileTime;
 113     WORD FileDate;
 114     DWORD FileSize;
 115     CHAR FileName[13];
 116 } DOS_FIND_FILE_BLOCK, *PDOS_FIND_FILE_BLOCK;
 117
 118 typedef struct _DOS_COUNTRY_CODE_BUFFER
 119 {
 120     WORD TimeFormat;
 121     WORD CurrencySymbol;
 122     WORD ThousandSep;
 123     WORD DecimalSep;
 124 } DOS_COUNTRY_CODE_BUFFER, *PDOS_COUNTRY_CODE_BUFFER;
 125
 126 #pragma pack(pop)
 127
 128 /* VARIABLES ******************************************************************/
 129
 130 extern BOOLEAN DoEcho;
 131 extern DWORD DiskTransferArea;
 132 extern WORD DosErrorLevel;
 133 extern WORD DosLastError;
 134 extern PDOS_SYSVARS SysVars;
 135
 136 /* FUNCTIONS ******************************************************************/
 137
 138 extern CALLBACK16 DosContext;
 139 #define RegisterDosInt32(IntNumber, IntHandler) \
 140 do { \
 141     DosContext.NextOffset += RegisterInt32(MAKELONG(DosContext.NextOffset,   \
 142                                                     DosContext.Segment),     \
 143                                            (IntNumber), (IntHandler), NULL); \
 144 } while(0);
 145
 146 /*
 147  * DOS BIOS Functions
 148  * See bios.c
 149  */
 150 CHAR DosReadCharacter(WORD FileHandle);
 151 BOOLEAN DosCheckInput(VOID);
 152 VOID DosPrintCharacter(WORD FileHandle, CHAR Character);
 153
 154 BOOLEAN DosBIOSInitialize(VOID);
 155 VOID ConDrvInitialize(VOID);
 156 VOID ConDrvCleanup(VOID);
 157
 158 /*
 159  * DOS Kernel Functions
 160  * See dos.c
 161  */
 162
 163 BOOLEAN DosKRNLInitialize(VOID);
 164
 165 #endif // _DOS_H_
 166
 167 /* EOF */