subsystems/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.h
   5  * PURPOSE:         VDM DOS 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 "ntvdm.h"
  15
  16 /* DEFINES ********************************************************************/
  17
  18 //
  19 // We are DOS 5.00 (reported by INT 21h, AH=30h)
  20 //    and DOS 5.50 (reported by INT 21h, AX=3306h) for Windows NT Compatibility
  21 //
  22 #define DOS_VERSION     MAKEWORD(5, 00)
  23 #define NTDOS_VERSION   MAKEWORD(5, 50)
  24
  25 #define DOS_CONFIG_PATH L"%SystemRoot%\\system32\\CONFIG.NT"
  26 #define DOS_COMMAND_INTERPRETER L"%SystemRoot%\\system32\\COMMAND.COM /k %SystemRoot%\\system32\\AUTOEXEC.NT"
  27 #define FIRST_MCB_SEGMENT 0x1000
  28 #define USER_MEMORY_SIZE 0x8FFE
  29 #define SYSTEM_PSP 0x08
  30 #define SYSTEM_ENV_BLOCK 0x800
  31 #define INVALID_DOS_HANDLE 0xFFFF
  32 #define DOS_INPUT_HANDLE 0
  33 #define DOS_OUTPUT_HANDLE 1
  34 #define DOS_ERROR_HANDLE 2
  35 #define DOS_SFT_SIZE 255
  36 #define SEGMENT_TO_MCB(seg) ((PDOS_MCB)((ULONG_PTR)BaseAddress + TO_LINEAR((seg), 0)))
  37 #define SEGMENT_TO_PSP(seg) ((PDOS_PSP)((ULONG_PTR)BaseAddress + TO_LINEAR((seg), 0)))
  38 #define UMB_START_SEGMENT 0xC000
  39 #define UMB_END_SEGMENT 0xDFFF
  40 #define DOS_ALLOC_HIGH 0x40
  41 #define DOS_ALLOC_HIGH_LOW 0x80
  42 #define DOS_CMDLINE_LENGTH 127
  43 #define DOS_DIR_LENGTH 64
  44 #define NUM_DRIVES ('Z' - 'A' + 1)
  45 #define DOS_CHAR_ATTRIBUTE 0x07
  46
  47 enum DOS_ALLOC_STRATEGY
  48 {
  49     DOS_ALLOC_FIRST_FIT,
  50     DOS_ALLOC_BEST_FIT,
  51     DOS_ALLOC_LAST_FIT
  52 };
  53
  54 #pragma pack(push, 1)
  55
  56 typedef struct _DOS_MCB
  57 {
  58     CHAR BlockType;
  59     WORD OwnerPsp;
  60     WORD Size;
  61     BYTE Unused[3];
  62     CHAR Name[8];
  63 } DOS_MCB, *PDOS_MCB;
  64
  65 typedef struct _DOS_FCB
  66 {
  67     BYTE DriveNumber;
  68     CHAR FileName[8];
  69     CHAR FileExt[3];
  70     WORD BlockNumber;
  71     WORD RecordSize;
  72     DWORD FileSize;
  73     WORD LastWriteDate;
  74     WORD LastWriteTime;
  75     BYTE Reserved[8];
  76     BYTE BlockRecord;
  77     BYTE RecordNumber[3];
  78 } DOS_FCB, *PDOS_FCB;
  79
  80 typedef struct _DOS_PSP
  81 {
  82     BYTE Exit[2];
  83     WORD LastParagraph;
  84     BYTE Reserved0[6];
  85     DWORD TerminateAddress;
  86     DWORD BreakAddress;
  87     DWORD CriticalAddress;
  88     WORD ParentPsp;
  89     BYTE HandleTable[20];
  90     WORD EnvBlock;
  91     DWORD LastStack;
  92     WORD HandleTableSize;
  93     DWORD HandleTablePtr;
  94     DWORD PreviousPsp;
  95     DWORD Reserved1;
  96     WORD DosVersion;
  97     BYTE Reserved2[14];
  98     BYTE FarCall[3];
  99     BYTE Reserved3[9];
 100     DOS_FCB Fcb;
 101     BYTE CommandLineSize;
 102     CHAR CommandLine[DOS_CMDLINE_LENGTH];
 103 } DOS_PSP, *PDOS_PSP;
 104
 105 typedef struct _DOS_INPUT_BUFFER
 106 {
 107     BYTE MaxLength;
 108     BYTE Length;
 109     CHAR Buffer[ANYSIZE_ARRAY];
 110 } DOS_INPUT_BUFFER, *PDOS_INPUT_BUFFER;
 111
 112 typedef struct _DOS_DRIVER_HEADER
 113 {
 114     DWORD NextDriver;
 115     WORD Attributes;
 116     WORD StrategyEntry;
 117     WORD InterruptEntry;
 118     CHAR DeviceName[8];
 119 } DOS_DRIVER_HEADER, *PDOS_DRIVER_HEADER;
 120
 121 typedef struct _DOS_FIND_FILE_BLOCK
 122 {
 123     CHAR DriveLetter;
 124     CHAR Pattern[11];
 125     UCHAR AttribMask;
 126     DWORD Unused;
 127     HANDLE SearchHandle;
 128
 129     /* The following part of the structure is documented */
 130     UCHAR Attributes;
 131     WORD FileTime;
 132     WORD FileDate;
 133     DWORD FileSize;
 134     CHAR FileName[13];
 135 } DOS_FIND_FILE_BLOCK, *PDOS_FIND_FILE_BLOCK;
 136
 137 #pragma pack(pop)
 138
 139 /* FUNCTIONS ******************************************************************/
 140
 141 /*
 142  * DOS BIOS Functions
 143  * See bios.c
 144  */
 145 CHAR DosReadCharacter(VOID);
 146 BOOLEAN DosCheckInput(VOID);
 147 VOID DosPrintCharacter(CHAR Character);
 148
 149 BOOLEAN DosBIOSInitialize(VOID);
 150
 151
 152 /*
 153  * DOS Kernel Functions
 154  * See dos.c
 155  */
 156 BOOL IsConsoleHandle(HANDLE hHandle);
 157 HANDLE DosGetRealHandle(WORD DosHandle);
 158 WORD DosReadFile(WORD FileHandle, LPVOID Buffer, WORD Count, LPWORD BytesRead);
 159 WORD DosWriteFile(WORD FileHandle, LPVOID Buffer, WORD Count, LPWORD BytesWritten);
 160
 161 VOID DosInitializePsp(WORD PspSegment, LPCSTR CommandLine, WORD ProgramSize, WORD Environment);
 162 BOOLEAN DosCreateProcess(LPCSTR CommandLine, WORD EnvBlock);
 163 VOID DosTerminateProcess(WORD Psp, BYTE ReturnCode);
 164 BOOLEAN DosHandleIoctl(BYTE ControlCode, WORD FileHandle);
 165
 166 VOID WINAPI DosInt20h(LPWORD Stack);
 167 VOID WINAPI DosInt21h(LPWORD Stack);
 168 VOID WINAPI DosBreakInterrupt(LPWORD Stack);
 169 VOID WINAPI DosInt2Fh(LPWORD Stack);
 170
 171 BOOLEAN DosKRNLInitialize(VOID);
 172
 173 #endif // _DOS_H_
 174
 175 /* EOF */