reactos/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
  34 #define INVALID_DOS_HANDLE  0xFFFF
  35 #define DOS_INPUT_HANDLE    0
  36 #define DOS_OUTPUT_HANDLE   1
  37 #define DOS_ERROR_HANDLE    2
  38
  39 #define DOS_SFT_SIZE 255
  40 #define SEGMENT_TO_MCB(seg) ((PDOS_MCB)((ULONG_PTR)BaseAddress + TO_LINEAR((seg), 0)))
  41 #define SEGMENT_TO_PSP(seg) ((PDOS_PSP)((ULONG_PTR)BaseAddress + TO_LINEAR((seg), 0)))
  42 #define UMB_START_SEGMENT 0xC000
  43 #define UMB_END_SEGMENT 0xDFFF
  44 #define DOS_ALLOC_HIGH 0x40
  45 #define DOS_ALLOC_HIGH_LOW 0x80
  46 #define DOS_CMDLINE_LENGTH 127
  47 #define DOS_DIR_LENGTH 64
  48 #define NUM_DRIVES ('Z' - 'A' + 1)
  49 #define DOS_CHAR_ATTRIBUTE 0x07
  50
  51 enum DOS_ALLOC_STRATEGY
  52 {
  53     DOS_ALLOC_FIRST_FIT,
  54     DOS_ALLOC_BEST_FIT,
  55     DOS_ALLOC_LAST_FIT
  56 };
  57
  58 typedef enum
  59 {
  60     DOS_LOAD_AND_EXECUTE = 0x00,
  61     DOS_LOAD_ONLY = 0x01,
  62     DOS_LOAD_OVERLAY = 0x03
  63 } DOS_EXEC_TYPE;
  64
  65 #pragma pack(push, 1)
  66
  67 typedef struct _DOS_MCB
  68 {
  69     CHAR BlockType;
  70     WORD OwnerPsp;
  71     WORD Size;
  72     BYTE Unused[3];
  73     CHAR Name[8];
  74 } DOS_MCB, *PDOS_MCB;
  75
  76 typedef struct _DOS_FCB
  77 {
  78     BYTE DriveNumber;
  79     CHAR FileName[8];
  80     CHAR FileExt[3];
  81     WORD BlockNumber;
  82     WORD RecordSize;
  83     DWORD FileSize;
  84     WORD LastWriteDate;
  85     WORD LastWriteTime;
  86     BYTE Reserved[8];
  87     BYTE BlockRecord;
  88     BYTE RecordNumber[3];
  89 } DOS_FCB, *PDOS_FCB;
  90
  91 typedef struct _DOS_PSP
  92 {
  93     BYTE Exit[2];
  94     WORD LastParagraph;
  95     BYTE Reserved0[6];
  96     DWORD TerminateAddress;
  97     DWORD BreakAddress;
  98     DWORD CriticalAddress;
  99     WORD ParentPsp;
 100     BYTE HandleTable[20];
 101     WORD EnvBlock;
 102     DWORD LastStack;
 103     WORD HandleTableSize;
 104     DWORD HandleTablePtr;
 105     DWORD PreviousPsp;
 106     DWORD Reserved1;
 107     WORD DosVersion;
 108     BYTE Reserved2[14];
 109     BYTE FarCall[3];
 110     BYTE Reserved3[9];
 111     DOS_FCB Fcb;
 112     BYTE CommandLineSize;
 113     CHAR CommandLine[DOS_CMDLINE_LENGTH];
 114 } DOS_PSP, *PDOS_PSP;
 115
 116 typedef struct _DOS_INPUT_BUFFER
 117 {
 118     BYTE MaxLength;
 119     BYTE Length;
 120     CHAR Buffer[ANYSIZE_ARRAY];
 121 } DOS_INPUT_BUFFER, *PDOS_INPUT_BUFFER;
 122
 123 typedef struct _DOS_DRIVER_HEADER
 124 {
 125     DWORD NextDriver;
 126     WORD Attributes;
 127     WORD StrategyEntry;
 128     WORD InterruptEntry;
 129     CHAR DeviceName[8];
 130 } DOS_DRIVER_HEADER, *PDOS_DRIVER_HEADER;
 131
 132 typedef struct _DOS_FIND_FILE_BLOCK
 133 {
 134     CHAR DriveLetter;
 135     CHAR Pattern[11];
 136     UCHAR AttribMask;
 137     DWORD Unused;
 138     HANDLE SearchHandle;
 139
 140     /* The following part of the structure is documented */
 141     UCHAR Attributes;
 142     WORD FileTime;
 143     WORD FileDate;
 144     DWORD FileSize;
 145     CHAR FileName[13];
 146 } DOS_FIND_FILE_BLOCK, *PDOS_FIND_FILE_BLOCK;
 147
 148 typedef struct _DOS_EXEC_PARAM_BLOCK
 149 {
 150     /* Input variables */
 151     WORD Environment;
 152     DWORD CommandLine;
 153     DWORD FirstFcb;
 154     DWORD SecondFcb;
 155
 156     /* Output variables */
 157     DWORD StackLocation;
 158     DWORD EntryPoint;
 159 } DOS_EXEC_PARAM_BLOCK, *PDOS_EXEC_PARAM_BLOCK;
 160
 161 #pragma pack(pop)
 162
 163 /* FUNCTIONS ******************************************************************/
 164
 165 extern CALLBACK16 DosContext;
 166 #define RegisterDosInt32(IntNumber, IntHandler) \
 167 do { \
 168     DosContext.NextOffset += RegisterInt32(MAKELONG(DosContext.NextOffset,   \
 169                                                     DosContext.Segment),     \
 170                                            (IntNumber), (IntHandler), NULL); \
 171 } while(0);
 172
 173 /*
 174  * DOS BIOS Functions
 175  * See bios.c
 176  */
 177 CHAR DosReadCharacter(WORD FileHandle);
 178 BOOLEAN DosCheckInput(VOID);
 179 VOID DosPrintCharacter(WORD FileHandle, CHAR Character);
 180
 181 BOOLEAN DosBIOSInitialize(VOID);
 182
 183
 184 /*
 185  * DOS Kernel Functions
 186  * See dos.c
 187  */
 188 BOOL IsConsoleHandle(HANDLE hHandle);
 189 WORD DosOpenHandle(HANDLE Handle);
 190 HANDLE DosGetRealHandle(WORD DosHandle);
 191
 192 WORD DosCreateFile(LPWORD Handle, LPCSTR FilePath, WORD Attributes);
 193 WORD DosOpenFile(LPWORD Handle, LPCSTR FilePath, BYTE AccessMode);
 194 WORD DosReadFile(WORD FileHandle, LPVOID Buffer, WORD Count, LPWORD BytesRead);
 195 WORD DosWriteFile(WORD FileHandle, LPVOID Buffer, WORD Count, LPWORD BytesWritten);
 196 WORD DosSeekFile(WORD FileHandle, LONG Offset, BYTE Origin, LPDWORD NewOffset);
 197 BOOL DosFlushFileBuffers(WORD FileHandle);
 198
 199 VOID DosInitializePsp(WORD PspSegment, LPCSTR CommandLine, WORD ProgramSize, WORD Environment);
 200 DWORD DosLoadExecutable(
 201     IN DOS_EXEC_TYPE LoadType,
 202     IN LPCSTR ExecutablePath,
 203     IN LPCSTR CommandLine,
 204     IN PVOID Environment,
 205     OUT PDWORD StackLocation OPTIONAL,
 206     OUT PDWORD EntryPoint OPTIONAL
 207 );
 208 WORD DosCreateProcess(
 209     DOS_EXEC_TYPE LoadType,
 210     LPCSTR ProgramName,
 211     PDOS_EXEC_PARAM_BLOCK Parameters
 212 );
 213 DWORD DosStartProcess(IN LPCSTR ExecutablePath,
 214                       IN LPCSTR CommandLine,
 215                       IN PVOID Environment);
 216 VOID DosTerminateProcess(WORD Psp, BYTE ReturnCode);
 217 BOOLEAN DosHandleIoctl(BYTE ControlCode, WORD FileHandle);
 218
 219 VOID WINAPI DosInt20h(LPWORD Stack);
 220 VOID WINAPI DosInt21h(LPWORD Stack);
 221 VOID WINAPI DosBreakInterrupt(LPWORD Stack);
 222 VOID WINAPI DosInt2Fh(LPWORD Stack);
 223
 224 BOOLEAN DosKRNLInitialize(VOID);
 225
 226 #endif // _DOS_H_
 227
 228 /* EOF */