mirror of
https://github.com/reactos/reactos.git
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374 lines
9.8 KiB
C
374 lines
9.8 KiB
C
/* $Id$
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*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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* FILE: subsys/ntvdm/ntvdm->c
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* PURPOSE: Virtual DOS Machine
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* PROGRAMMER: Robert Dickenson (robd@mok.lvcm.com)
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* UPDATE HISTORY:
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* Created 23/10/2002
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*/
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/* INCLUDES *****************************************************************/
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#define WIN32_NO_STATUS
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#include <windows.h>
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#include <stdio.h>
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#include <wchar.h>
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#include "resource.h"
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#define NTOS_MODE_USER
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#include <ndk/ntndk.h>
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#define NDEBUG
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#include <debug.h>
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/* GLOBALS ******************************************************************/
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/* FUNCTIONS *****************************************************************/
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void PrintString(char* fmt,...)
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{
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char buffer[512];
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va_list ap;
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va_start(ap, fmt);
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vsprintf(buffer, fmt, ap);
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va_end(ap);
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OutputDebugStringA(buffer);
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}
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/*
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GetVersion
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GetVolumeInformationW
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GetWindowsDirectoryA
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GlobalMemoryStatus
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HeapAlloc
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HeapCreate
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HeapDestroy
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HeapFree
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HeapReAlloc
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GetNextVDMCommand
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ExitVDM
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RegisterConsoleVDM
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SetVDMCurrentDirectories
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VDMConsoleOperation
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WriteConsoleInputVDMW
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NtSetLdtEntries
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NtTerminateProcess
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NtMapViewOfSection
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NtUnmapViewOfSection
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NtVdmControl
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*/
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typedef struct tag_VDM_CONFIG {
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int dos_options;
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int files;
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int buffers;
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WCHAR** device_list;
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//dos=high, umb
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//device=%SystemRoot%\system32\himem.sys
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//files=40
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} VDM_CONFIG, *PVDM_CONFIG;
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typedef struct tag_VDM_AUTOEXEC {
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WCHAR** load_list;
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//lh %SystemRoot%\system32\mscdexnt.exe
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//lh %SystemRoot%\system32\redir
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//lh %SystemRoot%\system32\dosx
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} VDM_AUTOEXEC, *PVDM_AUTOEXEC;
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typedef struct tag_VDM_CONTROL_BLOCK {
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HANDLE hHeap;
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PVOID ImageMem;
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VDM_CONFIG vdmConfig;
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VDM_AUTOEXEC vdmAutoexec;
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PROCESS_INFORMATION ProcessInformation;
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CHAR CommandLine[MAX_PATH];
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CHAR CurrentDirectory[MAX_PATH];
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} VDM_CONTROL_BLOCK, *PVDM_CONTROL_BLOCK;
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BOOL
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StartVDM(PVDM_CONTROL_BLOCK vdm)
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{
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BOOL Result;
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STARTUPINFOA StartupInfo;
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StartupInfo.cb = sizeof(StartupInfo);
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StartupInfo.lpReserved = NULL;
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StartupInfo.lpDesktop = NULL;
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StartupInfo.lpTitle = NULL;
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StartupInfo.dwFlags = 0;
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StartupInfo.cbReserved2 = 0;
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StartupInfo.lpReserved2 = 0;
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Result = CreateProcessA(vdm->CommandLine,
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NULL,
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NULL,
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NULL,
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FALSE,
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DETACHED_PROCESS,
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NULL,
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NULL,
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&StartupInfo,
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&vdm->ProcessInformation);
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if (!Result) {
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PrintString("VDM: Failed to execute target process\n");
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return FALSE;
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}
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WaitForSingleObject(vdm->ProcessInformation.hProcess, INFINITE);
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CloseHandle(vdm->ProcessInformation.hProcess);
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CloseHandle(vdm->ProcessInformation.hThread);
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return TRUE;
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}
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BOOL
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ShutdownVDM(PVDM_CONTROL_BLOCK vdm)
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{
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BOOL result = TRUE;
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return result;
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}
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BOOL ReadConfigForVDM(PVDM_CONTROL_BLOCK vdm)
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{
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BOOL result = TRUE;
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DWORD dwError;
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HANDLE hFile;
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hFile = CreateFileW(L"\\system32\\config.nt",
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GENERIC_READ,
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FILE_SHARE_READ,
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NULL,
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OPEN_ALWAYS /*OPEN_EXISTING*/,
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FILE_ATTRIBUTE_NORMAL,
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0);
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dwError = GetLastError();
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if (hFile == INVALID_HANDLE_VALUE) {
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// error with file path or system problem?
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} else {
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if (dwError == 0L) {
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// we just created a new file, perhaps we should set/write some defaults?
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}
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if (dwError == ERROR_ALREADY_EXISTS) {
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// read the line entries and cache in some struct...
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}
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CloseHandle(hFile);
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}
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hFile = CreateFileW(L"\\system32\\autoexec.nt",
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GENERIC_READ,
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FILE_SHARE_READ,
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NULL,
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OPEN_ALWAYS,
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FILE_ATTRIBUTE_NORMAL,
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0);
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dwError = GetLastError();
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if (hFile == INVALID_HANDLE_VALUE) {
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// error with file path or system problem?
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} else {
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if (dwError == 0L) {
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// we just created a new file, perhaps we should set/write some defaults?
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}
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if (dwError == ERROR_ALREADY_EXISTS) {
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// read the line entries and cache in some struct...
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}
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CloseHandle(hFile);
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}
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return result;
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}
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BOOL
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LoadConfigDriversForVDM(PVDM_CONFIG vdmConfig)
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{
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BOOL result = TRUE;
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return result;
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}
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BOOL
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SetConfigOptionsForVDM(PVDM_AUTOEXEC vdmAutoexec)
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{
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BOOL result = TRUE;
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return result;
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}
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BOOL
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CreateVDM(PVDM_CONTROL_BLOCK vdm)
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{
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// BOOL result = TRUE;
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SYSTEM_INFO inf;
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MEMORYSTATUS stat;
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GlobalMemoryStatus(&stat);
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if (stat.dwLength != sizeof(MEMORYSTATUS)) {
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printf("WARNING: GlobalMemoryStatus() returned unknown structure version, size %ld, expected %d.\n", stat.dwLength, sizeof(stat));
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} else {
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printf("Memory Load: %ld percent in use.\n", stat.dwMemoryLoad);
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printf("\t%ld total bytes physical memory.\n", stat.dwTotalPhys);
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printf("\t%ld available physical memory.\n", stat.dwAvailPhys);
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printf("\t%ld total bytes paging file.\n", stat.dwTotalPageFile);
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printf("\t%ld available paging file.\n", stat.dwAvailPageFile);
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printf("\t%lx total bytes virtual memory.\n", stat.dwTotalVirtual);
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printf("\t%lx available bytes virtual memory.\n", stat.dwAvailVirtual);
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#define OUT_OF_HEADROOM 90
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if (stat.dwMemoryLoad > OUT_OF_HEADROOM) {
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DPRINT("VDM: system resources deemed to low to start VDM.\n");
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//SetLastError();
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return FALSE;
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}
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}
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GetSystemInfo(&inf);
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vdm->hHeap = HeapCreate(0, inf.dwAllocationGranularity, 0);
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if (vdm->hHeap == NULL) {
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DPRINT("VDM: failed to create heap.\n");
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return FALSE;
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}
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#define DEFAULT_VDM_IMAGE_SIZE 2000000
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vdm->ImageMem = HeapAlloc(vdm->hHeap, 0, DEFAULT_VDM_IMAGE_SIZE);
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if (vdm->ImageMem == NULL) {
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DPRINT("VDM: failed to allocate image memory from heap %x.\n", vdm->hHeap);
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HeapDestroy(vdm->hHeap);
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vdm->hHeap = NULL;
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return FALSE;
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}
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return TRUE;
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}
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BOOL
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DestroyVDM(PVDM_CONTROL_BLOCK vdm)
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{
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BOOL result = TRUE;
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if (vdm->ImageMem != NULL) {
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if (HeapFree(vdm->hHeap, 0, vdm->ImageMem) != FALSE) {
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DPRINT("VDM: failed to free memory from heap %x.\n", vdm->hHeap);
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result = FALSE;
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}
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vdm->ImageMem = NULL;
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}
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if (vdm->hHeap != NULL) {
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if (!HeapDestroy(vdm->hHeap)) {
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DPRINT("VDM: failed to destroy heap %x.\n", vdm->hHeap);
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result = FALSE;
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}
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vdm->hHeap = NULL;
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}
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return result;
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}
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int WINAPI
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WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd)
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{
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VDM_CONTROL_BLOCK VdmCB;
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DWORD Result;
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ULONG i;
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BOOL vdmStarted = FALSE;
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WCHAR WelcomeMsg[RC_STRING_MAX_SIZE];
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WCHAR PromptMsg[RC_STRING_MAX_SIZE];
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CHAR InputBuffer[255];
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LoadStringW( GetModuleHandle(NULL), STRING_WelcomeMsg, WelcomeMsg,sizeof(WelcomeMsg) / sizeof(WelcomeMsg[0]));
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LoadStringW( GetModuleHandle(NULL), STRING_PromptMsg, PromptMsg ,sizeof(PromptMsg) / sizeof(PromptMsg[0]));
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AllocConsole();
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SetConsoleTitleW(L"ntvdm");
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WriteConsoleW(GetStdHandle(STD_OUTPUT_HANDLE),
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WelcomeMsg, lstrlenW(WelcomeMsg), // wcslen(WelcomeMsg),
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&Result, NULL);
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if (!CreateVDM(&VdmCB)) {
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DPRINT("VDM: failed to create VDM.\n");
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//SetLastError();
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return 2;
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}
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ReadConfigForVDM(&VdmCB);
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if (!LoadConfigDriversForVDM(&(VdmCB.vdmConfig))) {
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DPRINT("VDM: failed to load configuration drivers.\n");
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//SetLastError();
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return 2;
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}
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if (!SetConfigOptionsForVDM(&(VdmCB.vdmAutoexec))) {
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DPRINT("VDM: failed to set configuration options.\n");
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//SetLastError();
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return 3;
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}
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GetSystemDirectoryA(VdmCB.CommandLine, MAX_PATH);
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strcat(VdmCB.CommandLine, "\\hello.exe");
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GetWindowsDirectoryA(VdmCB.CurrentDirectory, MAX_PATH);
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for (;;) {
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WriteConsoleW(GetStdHandle(STD_OUTPUT_HANDLE),
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PromptMsg, lstrlenW(PromptMsg), // wcslen(PromptMsg),
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&Result, NULL);
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i = 0;
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do {
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ReadConsoleA(GetStdHandle(STD_INPUT_HANDLE),
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&InputBuffer[i], 1,
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&Result, NULL);
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if (++i >= (sizeof(InputBuffer) - 1)) {
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break;
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}
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} while (InputBuffer[i - 1] != '\n');
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InputBuffer[i - 1] = '\0';
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if (InputBuffer[0] == 'r' || InputBuffer[0] == 'R') {
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if (!vdmStarted) {
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if (StartVDM(&VdmCB)) {
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vdmStarted = TRUE;
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} else {
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DPRINT("VDM: failed to start.\n");
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}
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} else {
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DPRINT("VDM: already started.\n");
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}
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}
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if (InputBuffer[0] == 's' || InputBuffer[0] == 'S') {
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if (vdmStarted) {
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if (ShutdownVDM(&VdmCB)) {
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vdmStarted = FALSE;
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} else {
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DPRINT("VDM: failed to shutdown.\n");
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}
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} else {
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DPRINT("VDM: not started.\n");
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}
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}
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if (InputBuffer[0] == 'q' || InputBuffer[0] == 'Q') {
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break;
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}
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}
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if (!ShutdownVDM(&VdmCB)) {
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DPRINT("VDM: failed to cleanly shutdown VDM.\n");
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//SetLastError();
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return 5;
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}
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if (!DestroyVDM(&VdmCB)) {
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DPRINT("VDM: failed to cleanly destroy VDM.\n");
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//SetLastError();
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return 6;
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}
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ExitProcess(0);
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return 0;
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}
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