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 /**/ #include "callback.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 0x8FFE
  31 #define SYSTEM_PSP 0x08
  32 #define SYSTEM_ENV_BLOCK 0x800
  33 #define INVALID_DOS_HANDLE 0xFFFF
  34 #define DOS_INPUT_HANDLE 0
  35 #define DOS_OUTPUT_HANDLE 1
  36 #define DOS_ERROR_HANDLE 2
  37 #define DOS_SFT_SIZE 255
  38 #define SEGMENT_TO_MCB(seg) ((PDOS_MCB)((ULONG_PTR)BaseAddress + TO_LINEAR((seg), 0)))
  39 #define SEGMENT_TO_PSP(seg) ((PDOS_PSP)((ULONG_PTR)BaseAddress + TO_LINEAR((seg), 0)))
  40 #define UMB_START_SEGMENT 0xC000
  41 #define UMB_END_SEGMENT 0xDFFF
  42 #define DOS_ALLOC_HIGH 0x40
  43 #define DOS_ALLOC_HIGH_LOW 0x80
  44 #define DOS_CMDLINE_LENGTH 127
  45 #define DOS_DIR_LENGTH 64
  46 #define NUM_DRIVES ('Z' - 'A' + 1)
  47 #define DOS_CHAR_ATTRIBUTE 0x07
  48
  49 enum DOS_ALLOC_STRATEGY
  50 {
  51     DOS_ALLOC_FIRST_FIT,
  52     DOS_ALLOC_BEST_FIT,
  53     DOS_ALLOC_LAST_FIT
  54 };
  55
  56 #pragma pack(push, 1)
  57
  58 typedef struct _DOS_MCB
  59 {
  60     CHAR BlockType;
  61     WORD OwnerPsp;
  62     WORD Size;
  63     BYTE Unused[3];
  64     CHAR Name[8];
  65 } DOS_MCB, *PDOS_MCB;
  66
  67 typedef struct _DOS_FCB
  68 {
  69     BYTE DriveNumber;
  70     CHAR FileName[8];
  71     CHAR FileExt[3];
  72     WORD BlockNumber;
  73     WORD RecordSize;
  74     DWORD FileSize;
  75     WORD LastWriteDate;
  76     WORD LastWriteTime;
  77     BYTE Reserved[8];
  78     BYTE BlockRecord;
  79     BYTE RecordNumber[3];
  80 } DOS_FCB, *PDOS_FCB;
  81
  82 typedef struct _DOS_PSP
  83 {
  84     BYTE Exit[2];
  85     WORD LastParagraph;
  86     BYTE Reserved0[6];
  87     DWORD TerminateAddress;
  88     DWORD BreakAddress;
  89     DWORD CriticalAddress;
  90     WORD ParentPsp;
  91     BYTE HandleTable[20];
  92     WORD EnvBlock;
  93     DWORD LastStack;
  94     WORD HandleTableSize;
  95     DWORD HandleTablePtr;
  96     DWORD PreviousPsp;
  97     DWORD Reserved1;
  98     WORD DosVersion;
  99     BYTE Reserved2[14];
 100     BYTE FarCall[3];
 101     BYTE Reserved3[9];
 102     DOS_FCB Fcb;
 103     BYTE CommandLineSize;
 104     CHAR CommandLine[DOS_CMDLINE_LENGTH];
 105 } DOS_PSP, *PDOS_PSP;
 106
 107 typedef struct _DOS_INPUT_BUFFER
 108 {
 109     BYTE MaxLength;
 110     BYTE Length;
 111     CHAR Buffer[ANYSIZE_ARRAY];
 112 } DOS_INPUT_BUFFER, *PDOS_INPUT_BUFFER;
 113
 114 typedef struct _DOS_DRIVER_HEADER
 115 {
 116     DWORD NextDriver;
 117     WORD Attributes;
 118     WORD StrategyEntry;
 119     WORD InterruptEntry;
 120     CHAR DeviceName[8];
 121 } DOS_DRIVER_HEADER, *PDOS_DRIVER_HEADER;
 122
 123 typedef struct _DOS_FIND_FILE_BLOCK
 124 {
 125     CHAR DriveLetter;
 126     CHAR Pattern[11];
 127     UCHAR AttribMask;
 128     DWORD Unused;
 129     HANDLE SearchHandle;
 130
 131     /* The following part of the structure is documented */
 132     UCHAR Attributes;
 133     WORD FileTime;
 134     WORD FileDate;
 135     DWORD FileSize;
 136     CHAR FileName[13];
 137 } DOS_FIND_FILE_BLOCK, *PDOS_FIND_FILE_BLOCK;
 138
 139 #pragma pack(pop)
 140
 141 /* FUNCTIONS ******************************************************************/
 142
 143 extern CALLBACK16 DosContext;
 144 #define RegisterDosInt32(IntNumber, IntHandler) \
 145 do { \
 146     DosContext.NextOffset += RegisterInt32(MAKELONG(DosContext.NextOffset,   \
 147                                                     DosContext.Segment),     \
 148                                            (IntNumber), (IntHandler), NULL); \
 149 } while(0);
 150
 151 /*
 152  * DOS BIOS Functions
 153  * See bios.c
 154  */
 155 CHAR DosReadCharacter(VOID);
 156 BOOLEAN DosCheckInput(VOID);
 157 VOID DosPrintCharacter(CHAR Character);
 158
 159 BOOLEAN DosBIOSInitialize(VOID);
 160
 161
 162 /*
 163  * DOS Kernel Functions
 164  * See dos.c
 165  */
 166 BOOL IsConsoleHandle(HANDLE hHandle);
 167 HANDLE DosGetRealHandle(WORD DosHandle);
 168 WORD DosReadFile(WORD FileHandle, LPVOID Buffer, WORD Count, LPWORD BytesRead);
 169 WORD DosWriteFile(WORD FileHandle, LPVOID Buffer, WORD Count, LPWORD BytesWritten);
 170
 171 VOID DosInitializePsp(WORD PspSegment, LPCSTR CommandLine, WORD ProgramSize, WORD Environment);
 172 BOOLEAN DosCreateProcess(LPCSTR CommandLine, WORD EnvBlock);
 173 VOID DosTerminateProcess(WORD Psp, BYTE ReturnCode);
 174 BOOLEAN DosHandleIoctl(BYTE ControlCode, WORD FileHandle);
 175
 176 VOID WINAPI DosInt20h(LPWORD Stack);
 177 VOID WINAPI DosInt21h(LPWORD Stack);
 178 VOID WINAPI DosBreakInterrupt(LPWORD Stack);
 179 VOID WINAPI DosInt2Fh(LPWORD Stack);
 180
 181 BOOLEAN DosKRNLInitialize(VOID);
 182
 183 #endif // _DOS_H_
 184
 185 /* EOF */