reactos/lib/ntdll/ldr/startup.c

   1 /* $Id$
   2  *
   3  * COPYRIGHT:       See COPYING in the top level directory
   4  * PROJECT:         ReactOS kernel
   5  * FILE:            lib/ntdll/ldr/startup.c
   6  * PURPOSE:         Process startup for PE executables
   7  * PROGRAMMERS:     Jean Michault
   8  *                  Rex Jolliff (rex@lvcablemodem.com)
   9  */
  10
  11 /* INCLUDES *****************************************************************/
  12
  13 #include <ntdll.h>
  14 #define NDEBUG
  15 #include <debug.h>
  16 #include <win32k/callback.h>
  17
  18 VOID RtlInitializeHeapManager (VOID);
  19 VOID LdrpInitLoader(VOID);
  20 VOID STDCALL RtlpInitDeferedCriticalSection(VOID);
  21
  22 /* GLOBALS *******************************************************************/
  23
  24
  25 extern unsigned int _image_base__;
  26
  27 static RTL_CRITICAL_SECTION PebLock;
  28 static RTL_CRITICAL_SECTION LoaderLock;
  29 static RTL_BITMAP TlsBitMap;
  30 PLDR_DATA_TABLE_ENTRY ExeModule;
  31
  32 NTSTATUS LdrpAttachThread (VOID);
  33
  34 VOID RtlpInitializeVectoredExceptionHandling(VOID);
  35
  36
  37 #define VALUE_BUFFER_SIZE 256
  38
  39 BOOLEAN FASTCALL
  40 ReadCompatibilitySetting(HANDLE Key, LPWSTR Value, PKEY_VALUE_PARTIAL_INFORMATION ValueInfo, DWORD *Buffer)
  41 {
  42         UNICODE_STRING ValueName;
  43         NTSTATUS Status;
  44         ULONG Length;
  45
  46         RtlInitUnicodeString(&ValueName, Value);
  47         Status = NtQueryValueKey(Key,
  48                 &ValueName,
  49                 KeyValuePartialInformation,
  50                 ValueInfo,
  51                 VALUE_BUFFER_SIZE,
  52                 &Length);
  53
  54         if (!NT_SUCCESS(Status) || (ValueInfo->Type != REG_DWORD))
  55         {
  56                 RtlFreeUnicodeString(&ValueName);
  57                 return FALSE;
  58         }
  59         RtlCopyMemory(Buffer, &ValueInfo->Data[0], sizeof(DWORD));
  60         RtlFreeUnicodeString(&ValueName);
  61         return TRUE;
  62 }
  63
  64 VOID FASTCALL
  65 LoadImageFileExecutionOptions(PPEB Peb)
  66 {
  67     NTSTATUS Status = STATUS_SUCCESS;
  68     ULONG Value = 0;
  69     UNICODE_STRING ValueString;
  70     UNICODE_STRING ImageName;
  71     UNICODE_STRING ImagePathName;
  72     WCHAR ValueBuffer[64];
  73     ULONG ValueSize;
  74
  75     if (Peb->ProcessParameters &&
  76         Peb->ProcessParameters->ImagePathName.Length > 0)
  77       {
  78         DPRINT("%wZ\n", &Peb->ProcessParameters->ImagePathName);
  79
  80         ImagePathName = Peb->ProcessParameters->ImagePathName;
  81         ImageName.Buffer = ImagePathName.Buffer + ImagePathName.Length / sizeof(WCHAR);
  82         ImageName.Length = 0;
  83         while (ImagePathName.Buffer < ImageName.Buffer)
  84         {
  85             ImageName.Buffer--;
  86             if (*ImageName.Buffer == L'\\')
  87             {
  88                ImageName.Buffer++;
  89                break;
  90             }
  91         }
  92         ImageName.Length = ImagePathName.Length - (ImageName.Buffer - ImagePathName.Buffer) * sizeof(WCHAR);
  93         ImageName.MaximumLength = ImageName.Length + ImagePathName.MaximumLength - ImagePathName.Length;
  94
  95         DPRINT("%wZ\n", &ImageName);
  96
  97         /* global flag */
  98         Status = LdrQueryImageFileExecutionOptions (&ImageName,
  99                                                     L"GlobalFlag",
 100                                                     REG_SZ,
 101                                                     (PVOID)ValueBuffer,
 102                                                     sizeof(ValueBuffer),
 103                                                     &ValueSize);
 104         if (NT_SUCCESS(Status))
 105           {
 106             ValueString.Buffer = ValueBuffer;
 107             ValueString.Length = ValueSize - sizeof(WCHAR);
 108             ValueString.MaximumLength = sizeof(ValueBuffer);
 109             Status = RtlUnicodeStringToInteger(&ValueString, 16, &Value);
 110             if (NT_SUCCESS(Status))
 111               {
 112                 Peb->NtGlobalFlag |= Value;
 113                 DPRINT("GlobalFlag: Key='%S', Value=%08x\n", ValueBuffer, Value);
 114               }
 115           }
 116         /*
 117          * FIXME:
 118          *   read more options
 119          */
 120       }
 121 }
 122
 123
 124
 125
 126 BOOLEAN FASTCALL
 127 LoadCompatibilitySettings(PPEB Peb)
 128 {
 129         NTSTATUS Status;
 130         HANDLE UserKey = NULL;
 131         HANDLE KeyHandle;
 132         HANDLE SubKeyHandle;
 133         OBJECT_ATTRIBUTES ObjectAttributes;
 134         UNICODE_STRING KeyName = RTL_CONSTANT_STRING(
 135     L"Software\\Microsoft\\Windows NT\\CurrentVersion\\AppCompatFlags\\Layers");
 136         UNICODE_STRING ValueName;
 137         UCHAR ValueBuffer[VALUE_BUFFER_SIZE];
 138         PKEY_VALUE_PARTIAL_INFORMATION ValueInfo;
 139         ULONG Length;
 140         DWORD MajorVersion, MinorVersion, BuildNumber, PlatformId,
 141                   SPMajorVersion, SPMinorVersion= 0;
 142
 143         if(Peb->ProcessParameters &&
 144                 (Peb->ProcessParameters->ImagePathName.Length > 0))
 145         {
 146                 Status = RtlOpenCurrentUser(KEY_READ,
 147                                     &UserKey);
 148                 if (!NT_SUCCESS(Status))
 149                 {
 150                         return FALSE;
 151                 }
 152
 153                 InitializeObjectAttributes(&ObjectAttributes,
 154                         &KeyName,
 155                         OBJ_CASE_INSENSITIVE,
 156                         UserKey,
 157                         NULL);
 158
 159                 Status = NtOpenKey(&KeyHandle,
 160                                         KEY_QUERY_VALUE,
 161                                         &ObjectAttributes);
 162
 163                 if (!NT_SUCCESS(Status))
 164                 {
 165                         if (UserKey) NtClose(UserKey);
 166                         return FALSE;
 167                 }
 168
 169                 /* query version name for application */
 170                 ValueInfo = (PKEY_VALUE_PARTIAL_INFORMATION)ValueBuffer;
 171                 Status = NtQueryValueKey(KeyHandle,
 172                         &Peb->ProcessParameters->ImagePathName,
 173                         KeyValuePartialInformation,
 174                         ValueBuffer,
 175                         VALUE_BUFFER_SIZE,
 176                         &Length);
 177
 178                 if (!NT_SUCCESS(Status) || (ValueInfo->Type != REG_SZ))
 179                 {
 180                         NtClose(KeyHandle);
 181                         if (UserKey) NtClose(UserKey);
 182                         return FALSE;
 183                 }
 184
 185                 ValueName.Length = ValueInfo->DataLength;
 186                 ValueName.MaximumLength = ValueInfo->DataLength;
 187                 ValueName.Buffer = (PWSTR)ValueInfo->Data;
 188
 189                 /* load version info */
 190                 InitializeObjectAttributes(&ObjectAttributes,
 191                         &ValueName,
 192                         OBJ_CASE_INSENSITIVE,
 193                         KeyHandle,
 194                         NULL);
 195
 196                 Status = NtOpenKey(&SubKeyHandle,
 197                                         KEY_QUERY_VALUE,
 198                                         &ObjectAttributes);
 199
 200                 if (!NT_SUCCESS(Status))
 201                 {
 202                         NtClose(KeyHandle);
 203                         if (UserKey) NtClose(UserKey);
 204                         return FALSE;
 205                 }
 206
 207                 DPRINT("Loading version information for: %wZ\n", &ValueName);
 208
 209                 /* read settings from registry */
 210                 if(!ReadCompatibilitySetting(SubKeyHandle, L"MajorVersion", ValueInfo, &MajorVersion))
 211                         goto finish;
 212                 if(!ReadCompatibilitySetting(SubKeyHandle, L"MinorVersion", ValueInfo, &MinorVersion))
 213                         goto finish;
 214                 if(!ReadCompatibilitySetting(SubKeyHandle, L"BuildNumber", ValueInfo, &BuildNumber))
 215                         goto finish;
 216                 if(!ReadCompatibilitySetting(SubKeyHandle, L"PlatformId", ValueInfo, &PlatformId))
 217                         goto finish;
 218
 219                 /* now assign the settings */
 220                 Peb->OSMajorVersion = (ULONG)MajorVersion;
 221                 Peb->OSMinorVersion = (ULONG)MinorVersion;
 222                 Peb->OSBuildNumber = (USHORT)BuildNumber;
 223                 Peb->OSPlatformId = (ULONG)PlatformId;
 224
 225                 /* optional service pack version numbers */
 226                 if(ReadCompatibilitySetting(SubKeyHandle, L"SPMajorVersion", ValueInfo, &SPMajorVersion) &&
 227                    ReadCompatibilitySetting(SubKeyHandle, L"SPMinorVersion", ValueInfo, &SPMinorVersion))
 228                         Peb->OSCSDVersion = ((SPMajorVersion & 0xFF) << 8) | (SPMinorVersion & 0xFF);
 229
 230 finish:
 231                 /* we're finished */
 232                 NtClose(SubKeyHandle);
 233                 NtClose(KeyHandle);
 234                 if (UserKey) NtClose(UserKey);
 235                 return TRUE;
 236         }
 237         return FALSE;
 238 }
 239
 240 /* FUNCTIONS *****************************************************************/
 241
 242 VOID
 243 STDCALL
 244 LdrpInit(PCONTEXT Context,
 245          PVOID SystemArgument1,
 246          PVOID SystemArgument2)
 247 {
 248    PIMAGE_NT_HEADERS NTHeaders;
 249    PEPFUNC EntryPoint;
 250    PIMAGE_DOS_HEADER PEDosHeader;
 251    PVOID ImageBase;
 252    PPEB Peb;
 253    PLDR_DATA_TABLE_ENTRY NtModule;  // ntdll
 254    NLSTABLEINFO NlsTable;
 255    WCHAR FullNtDllPath[MAX_PATH];
 256    SYSTEM_BASIC_INFORMATION SystemInformation;
 257    NTSTATUS Status;
 258
 259    DPRINT("LdrpInit()\n");
 260    if (NtCurrentPeb()->Ldr == NULL || NtCurrentPeb()->Ldr->Initialized == FALSE)
 261      {
 262        Peb = (PPEB)(PEB_BASE);
 263        DPRINT("Peb %x\n", Peb);
 264        ImageBase = Peb->ImageBaseAddress;
 265        DPRINT("ImageBase %x\n", ImageBase);
 266        if (ImageBase <= (PVOID)0x1000)
 267          {
 268            DPRINT("ImageBase is null\n");
 269            ZwTerminateProcess(NtCurrentProcess(), STATUS_UNSUCCESSFUL);
 270          }
 271
 272        /*  If MZ header exists  */
 273        PEDosHeader = (PIMAGE_DOS_HEADER) ImageBase;
 274        DPRINT("PEDosHeader %x\n", PEDosHeader);
 275
 276        if (PEDosHeader->e_magic != IMAGE_DOS_SIGNATURE ||
 277            PEDosHeader->e_lfanew == 0L ||
 278            *(PULONG)((PUCHAR)ImageBase + PEDosHeader->e_lfanew) != IMAGE_NT_SIGNATURE)
 279          {
 280            DPRINT1("Image has bad header\n");
 281            ZwTerminateProcess(NtCurrentProcess(), STATUS_UNSUCCESSFUL);
 282          }
 283
 284        /* normalize process parameters */
 285        RtlNormalizeProcessParams (Peb->ProcessParameters);
 286
 287        /* Initialize NLS data */
 288        RtlInitNlsTables (Peb->AnsiCodePageData,
 289                          Peb->OemCodePageData,
 290                          Peb->UnicodeCaseTableData,
 291                          &NlsTable);
 292        RtlResetRtlTranslations (&NlsTable);
 293
 294        NTHeaders = (PIMAGE_NT_HEADERS)((ULONG_PTR)ImageBase + PEDosHeader->e_lfanew);
 295
 296        /* Get number of processors */
 297        Status = ZwQuerySystemInformation(SystemBasicInformation,
 298                                          &SystemInformation,
 299                                          sizeof(SYSTEM_BASIC_INFORMATION),
 300                                          NULL);
 301        if (!NT_SUCCESS(Status))
 302          {
 303            ZwTerminateProcess(NtCurrentProcess(), Status);
 304          }
 305
 306        Peb->NumberOfProcessors = SystemInformation.NumberOfProcessors;
 307
 308        /* Initialize Critical Section Data */
 309        RtlpInitDeferedCriticalSection();
 310
 311        /* create process heap */
 312        RtlInitializeHeapManager();
 313        Peb->ProcessHeap = RtlCreateHeap(HEAP_GROWABLE,
 314                                         NULL,
 315                                         NTHeaders->OptionalHeader.SizeOfHeapReserve,
 316                                         NTHeaders->OptionalHeader.SizeOfHeapCommit,
 317                                         NULL,
 318                                         NULL);
 319        if (Peb->ProcessHeap == 0)
 320          {
 321            DPRINT1("Failed to create process heap\n");
 322            ZwTerminateProcess(NtCurrentProcess(),STATUS_UNSUCCESSFUL);
 323          }
 324
 325        /* initialized vectored exception handling */
 326        RtlpInitializeVectoredExceptionHandling();
 327
 328        /* initalize peb lock support */
 329        RtlInitializeCriticalSection (&PebLock);
 330        Peb->FastPebLock = &PebLock;
 331        Peb->FastPebLockRoutine = (PPEBLOCKROUTINE)RtlEnterCriticalSection;
 332        Peb->FastPebUnlockRoutine = (PPEBLOCKROUTINE)RtlLeaveCriticalSection;
 333
 334        /* initialize tls bitmap */
 335        RtlInitializeBitMap (&TlsBitMap,
 336                             Peb->TlsBitmapBits,
 337                             TLS_MINIMUM_AVAILABLE);
 338        Peb->TlsBitmap = &TlsBitMap;
 339        Peb->TlsExpansionCounter = TLS_MINIMUM_AVAILABLE;
 340
 341        /* Initialize table of callbacks for the kernel. */
 342        Peb->KernelCallbackTable =
 343          RtlAllocateHeap(RtlGetProcessHeap(),
 344                          0,
 345                          sizeof(PVOID) * (USER32_CALLBACK_MAXIMUM + 1));
 346
 347        /* initalize loader lock */
 348        RtlInitializeCriticalSection (&LoaderLock);
 349        Peb->LoaderLock = &LoaderLock;
 350
 351        /* create loader information */
 352        Peb->Ldr = (PPEB_LDR_DATA)RtlAllocateHeap (Peb->ProcessHeap,
 353                                                   0,
 354                                                   sizeof(PEB_LDR_DATA));
 355        if (Peb->Ldr == NULL)
 356          {
 357            DPRINT1("Failed to create loader data\n");
 358            ZwTerminateProcess(NtCurrentProcess(),STATUS_UNSUCCESSFUL);
 359          }
 360        Peb->Ldr->Length = sizeof(PEB_LDR_DATA);
 361        Peb->Ldr->Initialized = FALSE;
 362        Peb->Ldr->SsHandle = NULL;
 363        InitializeListHead(&Peb->Ldr->InLoadOrderModuleList);
 364        InitializeListHead(&Peb->Ldr->InMemoryOrderModuleList);
 365        InitializeListHead(&Peb->Ldr->InInitializationOrderModuleList);
 366
 367        /* Load compatibility settings */
 368        LoadCompatibilitySettings(Peb);
 369
 370        /* Load execution options */
 371        LoadImageFileExecutionOptions(Peb);
 372
 373        /* build full ntdll path */
 374        wcscpy (FullNtDllPath, SharedUserData->NtSystemRoot);
 375        wcscat (FullNtDllPath, L"\\system32\\ntdll.dll");
 376
 377        /* add entry for ntdll */
 378        NtModule = (PLDR_DATA_TABLE_ENTRY)RtlAllocateHeap (Peb->ProcessHeap,
 379                                                 0,
 380                                                 sizeof(LDR_DATA_TABLE_ENTRY));
 381        if (NtModule == NULL)
 382          {
 383            DPRINT1("Failed to create loader module entry (NTDLL)\n");
 384            ZwTerminateProcess(NtCurrentProcess(),STATUS_UNSUCCESSFUL);
 385          }
 386        memset(NtModule, 0, sizeof(LDR_DATA_TABLE_ENTRY));
 387
 388        NtModule->DllBase = (PVOID)&_image_base__;
 389        NtModule->EntryPoint = 0; /* no entry point */
 390        RtlCreateUnicodeString (&NtModule->FullDllName,
 391                                FullNtDllPath);
 392        RtlCreateUnicodeString (&NtModule->BaseDllName,
 393                                L"ntdll.dll");
 394        NtModule->Flags = LDRP_IMAGE_DLL|LDRP_ENTRY_PROCESSED;
 395
 396        NtModule->LoadCount = -1; /* don't unload */
 397        NtModule->TlsIndex = -1;
 398        NtModule->SectionPointer = NULL;
 399        NtModule->CheckSum = 0;
 400
 401        NTHeaders = RtlImageNtHeader (NtModule->DllBase);
 402        NtModule->SizeOfImage = LdrpGetResidentSize(NTHeaders);
 403        NtModule->TimeDateStamp = NTHeaders->FileHeader.TimeDateStamp;
 404
 405        InsertTailList(&Peb->Ldr->InLoadOrderModuleList,
 406                       &NtModule->InLoadOrderModuleList);
 407        InsertTailList(&Peb->Ldr->InInitializationOrderModuleList,
 408                       &NtModule->InInitializationOrderModuleList);
 409
 410 #if defined(DBG) || defined(KDBG)
 411
 412        LdrpLoadUserModuleSymbols(NtModule);
 413
 414 #endif /* DBG || KDBG */
 415
 416        /* add entry for executable (becomes first list entry) */
 417        ExeModule = (PLDR_DATA_TABLE_ENTRY)RtlAllocateHeap (Peb->ProcessHeap,
 418                                                  0,
 419                                                  sizeof(LDR_DATA_TABLE_ENTRY));
 420        if (ExeModule == NULL)
 421          {
 422            DPRINT1("Failed to create loader module infomation\n");
 423            ZwTerminateProcess(NtCurrentProcess(),STATUS_UNSUCCESSFUL);
 424          }
 425        ExeModule->DllBase = Peb->ImageBaseAddress;
 426
 427        if ((Peb->ProcessParameters == NULL) ||
 428            (Peb->ProcessParameters->ImagePathName.Length == 0))
 429          {
 430            DPRINT1("Failed to access the process parameter block\n");
 431            ZwTerminateProcess(NtCurrentProcess(),STATUS_UNSUCCESSFUL);
 432          }
 433
 434        RtlCreateUnicodeString(&ExeModule->FullDllName,
 435                               Peb->ProcessParameters->ImagePathName.Buffer);
 436        RtlCreateUnicodeString(&ExeModule->BaseDllName,
 437                               wcsrchr(ExeModule->FullDllName.Buffer, L'\\') + 1);
 438
 439        DPRINT("BaseDllName '%wZ'  FullDllName '%wZ'\n",
 440               &ExeModule->BaseDllName,
 441               &ExeModule->FullDllName);
 442
 443        ExeModule->Flags = LDRP_ENTRY_PROCESSED;
 444        ExeModule->LoadCount = -1; /* don't unload */
 445        ExeModule->TlsIndex = -1;
 446        ExeModule->SectionPointer = NULL;
 447        ExeModule->CheckSum = 0;
 448
 449        NTHeaders = RtlImageNtHeader (ExeModule->DllBase);
 450        ExeModule->SizeOfImage = LdrpGetResidentSize(NTHeaders);
 451        ExeModule->TimeDateStamp = NTHeaders->FileHeader.TimeDateStamp;
 452
 453        InsertHeadList(&Peb->Ldr->InLoadOrderModuleList,
 454                       &ExeModule->InLoadOrderModuleList);
 455
 456        LdrpInitLoader();
 457
 458 #if defined(DBG) || defined(KDBG)
 459
 460        LdrpLoadUserModuleSymbols(ExeModule);
 461
 462 #endif /* DBG || KDBG */
 463
 464        EntryPoint = LdrPEStartup((PVOID)ImageBase, NULL, NULL, NULL);
 465        ExeModule->EntryPoint = EntryPoint;
 466
 467        /* all required dlls are loaded now */
 468        Peb->Ldr->Initialized = TRUE;
 469
 470        /* Check before returning that we can run the image safely. */
 471        if (EntryPoint == NULL)
 472          {
 473            DPRINT1("Failed to initialize image\n");
 474            ZwTerminateProcess(NtCurrentProcess(),STATUS_UNSUCCESSFUL);
 475          }
 476      }
 477    /* attach the thread */
 478    RtlEnterCriticalSection(NtCurrentPeb()->LoaderLock);
 479    LdrpAttachThread();
 480    RtlLeaveCriticalSection(NtCurrentPeb()->LoaderLock);
 481 }
 482
 483 /* EOF */