reactos/lib/ntdll/ldr/startup.c

   1 /* $Id: startup.c,v 1.46 2002/11/15 22:06:01 ekohl Exp $
   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 <reactos/config.h>
  14 #include <ddk/ntddk.h>
  15 #include <windows.h>
  16 #include <ntdll/ldr.h>
  17 #include <ntdll/rtl.h>
  18 #include <csrss/csrss.h>
  19 #include <ntdll/csr.h>
  20 #include <user32/callback.h>
  21
  22 #define NDEBUG
  23 #include <ntdll/ntdll.h>
  24
  25
  26 VOID RtlInitializeHeapManager (VOID);
  27
  28 /* GLOBALS *******************************************************************/
  29
  30
  31 extern unsigned int _image_base__;
  32
  33 static CRITICAL_SECTION PebLock;
  34 static CRITICAL_SECTION LoaderLock;
  35 static RTL_BITMAP TlsBitMap;
  36
  37 ULONG NtGlobalFlag = 0;
  38
  39
  40 /* FUNCTIONS *****************************************************************/
  41
  42 VOID STDCALL
  43 LdrInitializeThunk (ULONG Unknown1,
  44                     ULONG Unknown2,
  45                     ULONG Unknown3,
  46                     ULONG Unknown4)
  47 {
  48    PIMAGE_NT_HEADERS NTHeaders;
  49    PEPFUNC EntryPoint;
  50    PIMAGE_DOS_HEADER PEDosHeader;
  51    NTSTATUS Status;
  52    PVOID ImageBase;
  53    PPEB Peb;
  54    PLDR_MODULE NtModule;  // ntdll
  55    PLDR_MODULE ExeModule; // executable
  56    WCHAR FullNtDllPath[MAX_PATH];
  57
  58    DPRINT("LdrInitializeThunk()\n");
  59    if (NtCurrentPeb()->Ldr != NULL && NtCurrentPeb()->Ldr->Initialized == TRUE)
  60      {
  61        PLIST_ENTRY current_entry;
  62        PDLLMAIN_FUNC Entrypoint;
  63        PLDR_MODULE current;
  64
  65        RtlEnterCriticalSection (NtCurrentPeb()->LoaderLock);
  66        current_entry =
  67          NtCurrentPeb()->Ldr->InInitializationOrderModuleList.Flink;
  68        while (current_entry !=
  69               &NtCurrentPeb()->Ldr->InInitializationOrderModuleList)
  70          {
  71            current = CONTAINING_RECORD(current_entry, LDR_MODULE,
  72                                        InInitializationOrderModuleList);
  73            Entrypoint = (PDLLMAIN_FUNC)current->EntryPoint;
  74            if (Entrypoint != NULL &&
  75                current->BaseAddress != NtCurrentPeb()->ImageBaseAddress)
  76              {
  77                (VOID)Entrypoint(current->BaseAddress, DLL_THREAD_ATTACH, NULL);
  78              }
  79            current_entry = current_entry->Flink;
  80          }
  81        RtlLeaveCriticalSection (NtCurrentPeb()->LoaderLock);
  82        return;
  83      }
  84
  85    Peb = (PPEB)(PEB_BASE);
  86    DPRINT("Peb %x\n", Peb);
  87    ImageBase = Peb->ImageBaseAddress;
  88    DPRINT("ImageBase %x\n", ImageBase);
  89    if (ImageBase <= (PVOID)0x1000)
  90      {
  91         DPRINT("ImageBase is null\n");
  92         ZwTerminateProcess(NtCurrentProcess(), STATUS_UNSUCCESSFUL);
  93      }
  94
  95    NtGlobalFlag = Peb->NtGlobalFlag;
  96
  97    /*  If MZ header exists  */
  98    PEDosHeader = (PIMAGE_DOS_HEADER) ImageBase;
  99    DPRINT("PEDosHeader %x\n", PEDosHeader);
 100    if (PEDosHeader->e_magic != IMAGE_DOS_MAGIC ||
 101        PEDosHeader->e_lfanew == 0L ||
 102        *(PULONG)((PUCHAR)ImageBase + PEDosHeader->e_lfanew) != IMAGE_PE_MAGIC)
 103      {
 104         DbgPrint("Image has bad header\n");
 105         ZwTerminateProcess(NtCurrentProcess(), STATUS_UNSUCCESSFUL);
 106      }
 107
 108    /* normalize process parameters */
 109    RtlNormalizeProcessParams (Peb->ProcessParameters);
 110
 111 #if 0
 112    /* initialize NLS data */
 113    RtlInitNlsTables (Peb->AnsiCodePageData,
 114                      Peb->OemCodePageData,
 115                      Peb->UnicodeCaseTableData,
 116                      &TranslationTable);
 117    RtlResetRtlTranslations (&TranslationTable);
 118 #endif
 119
 120    NTHeaders = (PIMAGE_NT_HEADERS)(ImageBase + PEDosHeader->e_lfanew);
 121
 122    /* create process heap */
 123    RtlInitializeHeapManager();
 124    Peb->ProcessHeap = RtlCreateHeap(HEAP_GROWABLE,
 125                                     (PVOID)HEAP_BASE,
 126                                     NTHeaders->OptionalHeader.SizeOfHeapReserve,
 127                                     NTHeaders->OptionalHeader.SizeOfHeapCommit,
 128                                     NULL,
 129                                     NULL);
 130    if (Peb->ProcessHeap == 0)
 131      {
 132         DbgPrint("Failed to create process heap\n");
 133         ZwTerminateProcess(NtCurrentProcess(),STATUS_UNSUCCESSFUL);
 134      }
 135
 136    /* initalize peb lock support */
 137    RtlInitializeCriticalSection (&PebLock);
 138    Peb->FastPebLock = &PebLock;
 139    Peb->FastPebLockRoutine = (PPEBLOCKROUTINE)RtlEnterCriticalSection;
 140    Peb->FastPebUnlockRoutine = (PPEBLOCKROUTINE)RtlLeaveCriticalSection;
 141
 142    /* initialize tls bitmap */
 143    RtlInitializeBitMap (&TlsBitMap,
 144                         Peb->TlsBitmapBits,
 145                         TLS_MINIMUM_AVAILABLE);
 146    Peb->TlsBitmap = &TlsBitMap;
 147    Peb->TlsExpansionCounter = TLS_MINIMUM_AVAILABLE;
 148
 149    /* Initialize table of callbacks for the kernel. */
 150    Peb->KernelCallbackTable =
 151      RtlAllocateHeap(RtlGetProcessHeap(),
 152                      0,
 153                      sizeof(PVOID) * USER32_CALLBACK_MAXIMUM);
 154
 155    /* initalize loader lock */
 156    RtlInitializeCriticalSection (&LoaderLock);
 157    Peb->LoaderLock = &LoaderLock;
 158
 159    /* create loader information */
 160    Peb->Ldr = (PPEB_LDR_DATA)RtlAllocateHeap (Peb->ProcessHeap,
 161                                               0,
 162                                               sizeof(PEB_LDR_DATA));
 163    if (Peb->Ldr == NULL)
 164      {
 165         DbgPrint("Failed to create loader data\n");
 166         ZwTerminateProcess(NtCurrentProcess(),STATUS_UNSUCCESSFUL);
 167      }
 168    Peb->Ldr->Length = sizeof(PEB_LDR_DATA);
 169    Peb->Ldr->Initialized = FALSE;
 170    Peb->Ldr->SsHandle = NULL;
 171    InitializeListHead(&Peb->Ldr->InLoadOrderModuleList);
 172    InitializeListHead(&Peb->Ldr->InMemoryOrderModuleList);
 173    InitializeListHead(&Peb->Ldr->InInitializationOrderModuleList);
 174
 175    /* build full ntdll path */
 176    wcscpy (FullNtDllPath, SharedUserData->NtSystemRoot);
 177    wcscat (FullNtDllPath, L"\\system32\\ntdll.dll");
 178
 179    /* add entry for ntdll */
 180    NtModule = (PLDR_MODULE)RtlAllocateHeap (Peb->ProcessHeap,
 181                                             0,
 182                                             sizeof(LDR_MODULE));
 183    if (NtModule == NULL)
 184      {
 185         DbgPrint("Failed to create loader module entry (NTDLL)\n");
 186         ZwTerminateProcess(NtCurrentProcess(),STATUS_UNSUCCESSFUL);
 187      }
 188    memset(NtModule, 0, sizeof(LDR_MODULE));
 189
 190    NtModule->BaseAddress = (PVOID)&_image_base__;
 191    NtModule->EntryPoint = 0; /* no entry point */
 192    RtlCreateUnicodeString (&NtModule->FullDllName,
 193                            FullNtDllPath);
 194    RtlCreateUnicodeString (&NtModule->BaseDllName,
 195                            L"ntdll.dll");
 196    NtModule->Flags = 0;
 197    NtModule->LoadCount = -1; /* don't unload */
 198    NtModule->TlsIndex = 0;
 199    NtModule->SectionHandle = NULL;
 200    NtModule->CheckSum = 0;
 201
 202    NTHeaders = RtlImageNtHeader (NtModule->BaseAddress);
 203    NtModule->SizeOfImage = NTHeaders->OptionalHeader.SizeOfImage;
 204    NtModule->TimeDateStamp = NTHeaders->FileHeader.TimeDateStamp;
 205
 206    InsertTailList(&Peb->Ldr->InLoadOrderModuleList,
 207                   &NtModule->InLoadOrderModuleList);
 208    InsertTailList(&Peb->Ldr->InInitializationOrderModuleList,
 209                   &NtModule->InInitializationOrderModuleList);
 210
 211 #ifdef DBG
 212
 213   LdrpLoadUserModuleSymbols(NtModule);
 214
 215 #endif /* DBG */
 216
 217    /* add entry for executable (becomes first list entry) */
 218    ExeModule = (PLDR_MODULE)RtlAllocateHeap (Peb->ProcessHeap,
 219                                              0,
 220                                              sizeof(LDR_MODULE));
 221    if (ExeModule == NULL)
 222      {
 223         DbgPrint("Failed to create loader module infomation\n");
 224         ZwTerminateProcess(NtCurrentProcess(),STATUS_UNSUCCESSFUL);
 225      }
 226    ExeModule->BaseAddress = Peb->ImageBaseAddress;
 227
 228   if ((Peb->ProcessParameters == NULL) ||
 229       (Peb->ProcessParameters->ImagePathName.Length == 0))
 230     {
 231       DbgPrint("Failed to access the process parameter block\n");
 232       ZwTerminateProcess(NtCurrentProcess(),STATUS_UNSUCCESSFUL);
 233     }
 234
 235   RtlCreateUnicodeString(&ExeModule->FullDllName,
 236                          Peb->ProcessParameters->ImagePathName.Buffer);
 237   RtlCreateUnicodeString(&ExeModule->BaseDllName,
 238                          wcsrchr(ExeModule->FullDllName.Buffer, L'\\') + 1);
 239
 240   DPRINT("BaseDllName '%wZ'  FullDllName '%wZ'\n",
 241          &ExeModule->BaseDllName,
 242          &ExeModule->FullDllName);
 243
 244    ExeModule->Flags = 0;
 245    ExeModule->LoadCount = -1; /* don't unload */
 246    ExeModule->TlsIndex = 0;
 247    ExeModule->SectionHandle = NULL;
 248    ExeModule->CheckSum = 0;
 249
 250    NTHeaders = RtlImageNtHeader (ExeModule->BaseAddress);
 251    ExeModule->SizeOfImage = NTHeaders->OptionalHeader.SizeOfImage;
 252    ExeModule->TimeDateStamp = NTHeaders->FileHeader.TimeDateStamp;
 253
 254    InsertHeadList(&Peb->Ldr->InLoadOrderModuleList,
 255                   &ExeModule->InLoadOrderModuleList);
 256
 257 #ifdef DBG
 258
 259   LdrpLoadUserModuleSymbols(ExeModule);
 260
 261 #endif /* DBG */
 262
 263    EntryPoint = LdrPEStartup((PVOID)ImageBase, NULL, NULL, NULL);
 264    ExeModule->EntryPoint = (ULONG)EntryPoint;
 265
 266    /* all required dlls are loaded now */
 267    Peb->Ldr->Initialized = TRUE;
 268
 269    /* Check before returning that we can run the image safely. */
 270    if (EntryPoint == NULL)
 271      {
 272         DbgPrint("Failed to initialize image\n");
 273         ZwTerminateProcess(NtCurrentProcess(),STATUS_UNSUCCESSFUL);
 274      }
 275 }
 276
 277 /* EOF */