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reactos/dll/ntdll/ldr/ldrapi.c
Mark Jansen 24a56f89ab
Rework apisets to use a table 
This removes all fake apiset forwarders,
and handles apisets inside ntdll.
This is not 100% compatible with how windows does it, but it should be good enough for us.
2024-04-27 22:51:34 +02:00

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48 KiB
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/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS NT User Mode Library
* FILE: dll/ntdll/ldr/ldrapi.c
* PURPOSE: PE Loader Public APIs
* PROGRAMMERS: Alex Ionescu (alex@relsoft.net)
* Aleksey Bragin (aleksey@reactos.org)
*/
/* INCLUDES *****************************************************************/
#include <ntdll.h>
#define NDEBUG
#include <debug.h>
/* GLOBALS *******************************************************************/
LIST_ENTRY LdrpUnloadHead;
LONG LdrpLoaderLockAcquisitionCount;
BOOLEAN LdrpShowRecursiveLoads, LdrpBreakOnRecursiveDllLoads;
UNICODE_STRING LdrApiDefaultExtension = RTL_CONSTANT_STRING(L".DLL");
ULONG AlternateResourceModuleCount;
extern PLDR_MANIFEST_PROBER_ROUTINE LdrpManifestProberRoutine;
/* FUNCTIONS *****************************************************************/
NTSTATUS
NTAPI
LdrFindCreateProcessManifest(IN ULONG Flags,
IN PVOID Image,
IN PVOID IdPath,
IN ULONG IdPathLength,
IN PVOID OutDataEntry)
{
UNIMPLEMENTED;
return STATUS_NOT_IMPLEMENTED;
}
NTSTATUS
NTAPI
LdrDestroyOutOfProcessImage(IN PVOID Image)
{
UNIMPLEMENTED;
return STATUS_NOT_IMPLEMENTED;
}
NTSTATUS
NTAPI
LdrCreateOutOfProcessImage(IN ULONG Flags,
IN HANDLE ProcessHandle,
IN HANDLE DllHandle,
IN PVOID Unknown3)
{
UNIMPLEMENTED;
return STATUS_NOT_IMPLEMENTED;
}
NTSTATUS
NTAPI
LdrAccessOutOfProcessResource(IN PVOID Unknown,
IN PVOID Image,
IN PVOID Unknown1,
IN PVOID Unknown2,
IN PVOID Unknown3)
{
UNIMPLEMENTED;
return STATUS_NOT_IMPLEMENTED;
}
VOID
NTAPI
LdrSetDllManifestProber(
_In_ PLDR_MANIFEST_PROBER_ROUTINE Routine)
{
LdrpManifestProberRoutine = Routine;
}
BOOLEAN
NTAPI
LdrAlternateResourcesEnabled(VOID)
{
/* ReactOS does not support this */
return FALSE;
}
FORCEINLINE
ULONG_PTR
LdrpMakeCookie(VOID)
{
/* Generate a cookie */
return (((ULONG_PTR)NtCurrentTeb()->RealClientId.UniqueThread & 0xFFF) << 16) |
(_InterlockedIncrement(&LdrpLoaderLockAcquisitionCount) & 0xFFFF);
}
/*
* @implemented
*/
NTSTATUS
NTAPI
LdrUnlockLoaderLock(
_In_ ULONG Flags,
_In_opt_ ULONG_PTR Cookie)
{
NTSTATUS Status = STATUS_SUCCESS;
DPRINT("LdrUnlockLoaderLock(%x %Ix)\n", Flags, Cookie);
/* Check for valid flags */
if (Flags & ~LDR_UNLOCK_LOADER_LOCK_FLAG_RAISE_ON_ERRORS)
{
/* Flags are invalid, check how to fail */
if (Flags & LDR_UNLOCK_LOADER_LOCK_FLAG_RAISE_ON_ERRORS)
{
/* The caller wants us to raise status */
RtlRaiseStatus(STATUS_INVALID_PARAMETER_1);
}
/* A normal failure */
return STATUS_INVALID_PARAMETER_1;
}
/* If we don't have a cookie, just return */
if (!Cookie) return STATUS_SUCCESS;
/* Validate the cookie */
if ((Cookie & 0xF0000000) ||
((Cookie >> 16) ^ (HandleToUlong(NtCurrentTeb()->RealClientId.UniqueThread) & 0xFFF)))
{
DPRINT1("LdrUnlockLoaderLock() called with an invalid cookie!\n");
/* Invalid cookie, check how to fail */
if (Flags & LDR_UNLOCK_LOADER_LOCK_FLAG_RAISE_ON_ERRORS)
{
/* The caller wants us to raise status */
RtlRaiseStatus(STATUS_INVALID_PARAMETER_2);
}
/* A normal failure */
return STATUS_INVALID_PARAMETER_2;
}
/* Ready to release the lock */
if (Flags & LDR_UNLOCK_LOADER_LOCK_FLAG_RAISE_ON_ERRORS)
{
/* Do a direct leave */
RtlLeaveCriticalSection(&LdrpLoaderLock);
}
else
{
/* Wrap this in SEH, since we're not supposed to raise */
_SEH2_TRY
{
/* Leave the lock */
RtlLeaveCriticalSection(&LdrpLoaderLock);
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
/* We should use the LDR Filter instead */
Status = _SEH2_GetExceptionCode();
}
_SEH2_END;
}
/* All done */
return Status;
}
/*
* @implemented
*/
NTSTATUS
NTAPI
LdrLockLoaderLock(
_In_ ULONG Flags,
_Out_opt_ PULONG Disposition,
_Out_opt_ PULONG_PTR Cookie)
{
NTSTATUS Status = STATUS_SUCCESS;
BOOLEAN InInit = LdrpInLdrInit;
DPRINT("LdrLockLoaderLock(%x %p %p)\n", Flags, Disposition, Cookie);
/* Zero out the outputs */
if (Disposition) *Disposition = LDR_LOCK_LOADER_LOCK_DISPOSITION_INVALID;
if (Cookie) *Cookie = 0;
/* Validate the flags */
if (Flags & ~(LDR_LOCK_LOADER_LOCK_FLAG_RAISE_ON_ERRORS |
LDR_LOCK_LOADER_LOCK_FLAG_TRY_ONLY))
{
/* Flags are invalid, check how to fail */
if (Flags & LDR_LOCK_LOADER_LOCK_FLAG_RAISE_ON_ERRORS)
{
/* The caller wants us to raise status */
RtlRaiseStatus(STATUS_INVALID_PARAMETER_1);
}
/* A normal failure */
return STATUS_INVALID_PARAMETER_1;
}
/* Make sure we got a cookie */
if (!Cookie)
{
/* No cookie check how to fail */
if (Flags & LDR_LOCK_LOADER_LOCK_FLAG_RAISE_ON_ERRORS)
{
/* The caller wants us to raise status */
RtlRaiseStatus(STATUS_INVALID_PARAMETER_3);
}
/* A normal failure */
return STATUS_INVALID_PARAMETER_3;
}
/* If the flag is set, make sure we have a valid pointer to use */
if ((Flags & LDR_LOCK_LOADER_LOCK_FLAG_TRY_ONLY) && !(Disposition))
{
/* No pointer to return the data to */
if (Flags & LDR_LOCK_LOADER_LOCK_FLAG_RAISE_ON_ERRORS)
{
/* The caller wants us to raise status */
RtlRaiseStatus(STATUS_INVALID_PARAMETER_2);
}
/* Fail */
return STATUS_INVALID_PARAMETER_2;
}
/* Return now if we are in the init phase */
if (InInit) return STATUS_SUCCESS;
/* Check what locking semantic to use */
if (Flags & LDR_LOCK_LOADER_LOCK_FLAG_RAISE_ON_ERRORS)
{
/* Check if we should enter or simply try */
if (Flags & LDR_LOCK_LOADER_LOCK_FLAG_TRY_ONLY)
{
/* Do a try */
if (!RtlTryEnterCriticalSection(&LdrpLoaderLock))
{
/* It's locked */
*Disposition = LDR_LOCK_LOADER_LOCK_DISPOSITION_LOCK_NOT_ACQUIRED;
}
else
{
/* It worked */
*Disposition = LDR_LOCK_LOADER_LOCK_DISPOSITION_LOCK_ACQUIRED;
*Cookie = LdrpMakeCookie();
}
}
else
{
/* Do a enter */
RtlEnterCriticalSection(&LdrpLoaderLock);
/* See if result was requested */
if (Disposition) *Disposition = LDR_LOCK_LOADER_LOCK_DISPOSITION_LOCK_ACQUIRED;
*Cookie = LdrpMakeCookie();
}
}
else
{
/* Wrap this in SEH, since we're not supposed to raise */
_SEH2_TRY
{
/* Check if we should enter or simply try */
if (Flags & LDR_LOCK_LOADER_LOCK_FLAG_TRY_ONLY)
{
/* Do a try */
if (!RtlTryEnterCriticalSection(&LdrpLoaderLock))
{
/* It's locked */
*Disposition = LDR_LOCK_LOADER_LOCK_DISPOSITION_LOCK_NOT_ACQUIRED;
}
else
{
/* It worked */
*Disposition = LDR_LOCK_LOADER_LOCK_DISPOSITION_LOCK_ACQUIRED;
*Cookie = LdrpMakeCookie();
}
}
else
{
/* Do an enter */
RtlEnterCriticalSection(&LdrpLoaderLock);
/* See if result was requested */
if (Disposition) *Disposition = LDR_LOCK_LOADER_LOCK_DISPOSITION_LOCK_ACQUIRED;
*Cookie = LdrpMakeCookie();
}
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
/* We should use the LDR Filter instead */
Status = _SEH2_GetExceptionCode();
}
_SEH2_END;
}
/* Return status */
return Status;
}
/*
* @implemented
*/
NTSTATUS
NTAPI
DECLSPEC_HOTPATCH
LdrLoadDll(
_In_opt_ PWSTR SearchPath,
_In_opt_ PULONG DllCharacteristics,
_In_ PUNICODE_STRING DllName,
_Out_ PVOID *BaseAddress)
{
WCHAR StringBuffer[MAX_PATH];
UNICODE_STRING StaticString, DynamicString;
BOOLEAN RedirectedDll = FALSE;
NTSTATUS Status;
ULONG_PTR Cookie;
PUNICODE_STRING OldTldDll;
PTEB Teb = NtCurrentTeb();
/* Initialize the strings */
RtlInitEmptyUnicodeString(&StaticString, StringBuffer, sizeof(StringBuffer));
RtlInitEmptyUnicodeString(&DynamicString, NULL, 0);
Status = LdrpApplyFileNameRedirection(DllName, &LdrApiDefaultExtension, &StaticString, &DynamicString, &DllName, &RedirectedDll);
/* Lock the loader lock */
LdrLockLoaderLock(LDR_LOCK_LOADER_LOCK_FLAG_RAISE_ON_ERRORS, NULL, &Cookie);
/* Check if there's a TLD DLL being loaded */
OldTldDll = LdrpTopLevelDllBeingLoaded;
_SEH2_TRY
{
if (OldTldDll)
{
/* This is a recursive load, do something about it? */
if ((ShowSnaps) || (LdrpShowRecursiveLoads) || (LdrpBreakOnRecursiveDllLoads))
{
/* Print out debug messages */
DPRINT1("[%p, %p] LDR: Recursive DLL Load\n",
Teb->RealClientId.UniqueProcess,
Teb->RealClientId.UniqueThread);
DPRINT1("[%p, %p] Previous DLL being loaded \"%wZ\"\n",
Teb->RealClientId.UniqueProcess,
Teb->RealClientId.UniqueThread,
OldTldDll);
DPRINT1("[%p, %p] DLL being requested \"%wZ\"\n",
Teb->RealClientId.UniqueProcess,
Teb->RealClientId.UniqueThread,
DllName);
/* Was it initializing too? */
if (!LdrpCurrentDllInitializer)
{
DPRINT1("[%p, %p] LDR: No DLL Initializer was running\n",
Teb->RealClientId.UniqueProcess,
Teb->RealClientId.UniqueThread);
}
else
{
DPRINT1("[%p, %p] DLL whose initializer was currently running \"%wZ\"\n",
Teb->ClientId.UniqueProcess,
Teb->ClientId.UniqueThread,
&LdrpCurrentDllInitializer->BaseDllName);
}
}
}
/* Set this one as the TLD DLL being loaded*/
LdrpTopLevelDllBeingLoaded = DllName;
/* Load the DLL */
Status = LdrpLoadDll(RedirectedDll,
SearchPath,
DllCharacteristics,
DllName,
BaseAddress,
TRUE);
if (NT_SUCCESS(Status))
{
Status = STATUS_SUCCESS;
}
else if ((Status != STATUS_NO_SUCH_FILE) &&
(Status != STATUS_DLL_NOT_FOUND) &&
(Status != STATUS_OBJECT_NAME_NOT_FOUND) &&
(Status != STATUS_DLL_INIT_FAILED))
{
DbgPrintEx(DPFLTR_LDR_ID,
DPFLTR_WARNING_LEVEL,
"LDR: %s - failing because LdrpLoadDll(%wZ) returned status %x\n",
__FUNCTION__,
DllName,
Status);
}
}
_SEH2_FINALLY
{
/* Restore the old TLD DLL */
LdrpTopLevelDllBeingLoaded = OldTldDll;
/* Release the lock */
LdrUnlockLoaderLock(LDR_UNLOCK_LOADER_LOCK_FLAG_RAISE_ON_ERRORS, Cookie);
}
_SEH2_END;
/* Do we have a redirect string? */
if (DynamicString.Buffer)
RtlFreeUnicodeString(&DynamicString);
/* Return */
return Status;
}
/*
* @implemented
*/
NTSTATUS
NTAPI
LdrFindEntryForAddress(
_In_ PVOID Address,
_Out_ PLDR_DATA_TABLE_ENTRY *Module)
{
PLIST_ENTRY ListHead, NextEntry;
PLDR_DATA_TABLE_ENTRY LdrEntry;
PIMAGE_NT_HEADERS NtHeader;
PPEB_LDR_DATA Ldr = NtCurrentPeb()->Ldr;
ULONG_PTR DllBase, DllEnd;
DPRINT("LdrFindEntryForAddress(Address %p)\n", Address);
/* Nothing to do */
if (!Ldr) return STATUS_NO_MORE_ENTRIES;
/* Get the current entry */
LdrEntry = Ldr->EntryInProgress;
if (LdrEntry)
{
/* Get the NT Headers */
NtHeader = RtlImageNtHeader(LdrEntry->DllBase);
if (NtHeader)
{
/* Get the Image Base */
DllBase = (ULONG_PTR)LdrEntry->DllBase;
DllEnd = DllBase + NtHeader->OptionalHeader.SizeOfImage;
/* Check if they match */
if (((ULONG_PTR)Address >= DllBase) &&
((ULONG_PTR)Address < DllEnd))
{
/* Return it */
*Module = LdrEntry;
return STATUS_SUCCESS;
}
}
}
/* Loop the module list */
ListHead = &Ldr->InMemoryOrderModuleList;
NextEntry = ListHead->Flink;
while (NextEntry != ListHead)
{
/* Get the entry and NT Headers */
LdrEntry = CONTAINING_RECORD(NextEntry, LDR_DATA_TABLE_ENTRY, InMemoryOrderLinks);
NtHeader = RtlImageNtHeader(LdrEntry->DllBase);
if (NtHeader)
{
/* Get the Image Base */
DllBase = (ULONG_PTR)LdrEntry->DllBase;
DllEnd = DllBase + NtHeader->OptionalHeader.SizeOfImage;
/* Check if they match */
if (((ULONG_PTR)Address >= DllBase) &&
((ULONG_PTR)Address < DllEnd))
{
/* Return it */
*Module = LdrEntry;
return STATUS_SUCCESS;
}
/* Next Entry */
NextEntry = NextEntry->Flink;
}
}
/* Nothing found */
DbgPrintEx(DPFLTR_LDR_ID,
DPFLTR_WARNING_LEVEL,
"LDR: %s() exiting 0x%08lx\n",
__FUNCTION__,
STATUS_NO_MORE_ENTRIES);
return STATUS_NO_MORE_ENTRIES;
}
/*
* @implemented
*/
NTSTATUS
NTAPI
LdrGetDllHandleEx(
_In_ ULONG Flags,
_In_opt_ PWSTR DllPath,
_In_opt_ PULONG DllCharacteristics,
_In_ PUNICODE_STRING DllName,
_Out_opt_ PVOID *DllHandle)
{
NTSTATUS Status;
PLDR_DATA_TABLE_ENTRY LdrEntry;
UNICODE_STRING RedirectName, DynamicString, RawDllName;
PUNICODE_STRING pRedirectName, CompareName;
PWCHAR p1, p2, p3;
BOOLEAN Locked, RedirectedDll;
ULONG_PTR Cookie;
ULONG LoadFlag, Length;
/* Initialize the strings */
RtlInitEmptyUnicodeString(&DynamicString, NULL, 0);
RtlInitEmptyUnicodeString(&RawDllName, NULL, 0);
RedirectName = *DllName;
pRedirectName = &RedirectName;
/* Initialize state */
RedirectedDll = Locked = FALSE;
LdrEntry = NULL;
Cookie = 0;
/* Clear the handle */
if (DllHandle) *DllHandle = NULL;
/* Check for a valid flag combination */
if ((Flags & ~(LDR_GET_DLL_HANDLE_EX_PIN | LDR_GET_DLL_HANDLE_EX_UNCHANGED_REFCOUNT)) ||
(!DllHandle && !(Flags & LDR_GET_DLL_HANDLE_EX_PIN)))
{
DPRINT1("Flags are invalid or no DllHandle given\n");
Status = STATUS_INVALID_PARAMETER;
goto Quickie;
}
/* If not initializing */
if (!LdrpInLdrInit)
{
/* Acquire the lock */
Status = LdrLockLoaderLock(0, NULL, &Cookie);
if (!NT_SUCCESS(Status)) goto Quickie;
/* Remember we own it */
Locked = TRUE;
}
Status = LdrpApplyFileNameRedirection(
pRedirectName, &LdrApiDefaultExtension, NULL, &DynamicString, &pRedirectName, &RedirectedDll);
if (!NT_SUCCESS(Status))
{
DPRINT1("LdrpApplyFileNameRedirection FAILED: (Status 0x%x)\n", Status);
goto Quickie;
}
/* Set default failure code */
Status = STATUS_DLL_NOT_FOUND;
/* Use the cache if we can */
if (LdrpGetModuleHandleCache)
{
/* Check if we were redirected */
if (RedirectedDll)
{
/* Check the flag */
if (!(LdrpGetModuleHandleCache->Flags & LDRP_REDIRECTED))
{
goto DontCompare;
}
/* Use the right name */
CompareName = &LdrpGetModuleHandleCache->FullDllName;
}
else
{
/* Check the flag */
if (LdrpGetModuleHandleCache->Flags & LDRP_REDIRECTED)
{
goto DontCompare;
}
/* Use the right name */
CompareName = &LdrpGetModuleHandleCache->BaseDllName;
}
/* Check if the name matches */
if (RtlEqualUnicodeString(pRedirectName,
CompareName,
TRUE))
{
/* Skip the rest */
LdrEntry = LdrpGetModuleHandleCache;
/* Return success */
Status = STATUS_SUCCESS;
goto Quickie;
}
}
DontCompare:
/* Find the name without the extension */
p1 = pRedirectName->Buffer;
p2 = NULL;
p3 = &p1[pRedirectName->Length / sizeof(WCHAR)];
while (p1 != p3)
{
if (*p1++ == L'.')
{
p2 = p1;
}
else if (*p1 == L'\\')
{
p2 = NULL;
}
}
/* Check if no extension was found or if we got a slash */
if (!(p2) || (*p2 == L'\\') || (*p2 == L'/'))
{
/* Check that we have space to add one */
Length = pRedirectName->Length +
LdrApiDefaultExtension.Length + sizeof(UNICODE_NULL);
if (Length >= UNICODE_STRING_MAX_BYTES)
{
/* No space to add the extension */
Status = STATUS_NAME_TOO_LONG;
goto Quickie;
}
/* Setup the string */
RawDllName.MaximumLength = Length;
ASSERT(Length >= sizeof(UNICODE_NULL));
RawDllName.Buffer = RtlAllocateHeap(RtlGetProcessHeap(),
0,
RawDllName.MaximumLength);
if (!RawDllName.Buffer)
{
Status = STATUS_NO_MEMORY;
goto Quickie;
}
/* Copy the string and add extension */
RtlCopyUnicodeString(&RawDllName, pRedirectName);
RtlAppendUnicodeStringToString(&RawDllName, &LdrApiDefaultExtension);
}
else
{
/* Check if there's something in the name */
Length = pRedirectName->Length;
if (Length)
{
/* Check and remove trailing period */
if (pRedirectName->Buffer[Length / sizeof(WCHAR) - sizeof(ANSI_NULL)] == '.')
{
/* Decrease the size */
pRedirectName->Length -= sizeof(WCHAR);
}
}
/* Setup the string */
RawDllName.MaximumLength = pRedirectName->Length + sizeof(WCHAR);
RawDllName.Buffer = RtlAllocateHeap(RtlGetProcessHeap(),
0,
RawDllName.MaximumLength);
if (!RawDllName.Buffer)
{
Status = STATUS_NO_MEMORY;
goto Quickie;
}
/* Copy the string */
RtlCopyUnicodeString(&RawDllName, pRedirectName);
}
/* Display debug string */
if (ShowSnaps)
{
DPRINT1("LDR: LdrGetDllHandleEx, searching for %wZ from %ws\n",
&RawDllName,
DllPath ? ((ULONG_PTR)DllPath == 1 ? L"" : DllPath) : L"");
}
/* Do the lookup */
if (LdrpCheckForLoadedDll(DllPath,
&RawDllName,
((ULONG_PTR)DllPath == 1) ? TRUE : FALSE,
RedirectedDll,
&LdrEntry))
{
/* Update cached entry */
LdrpGetModuleHandleCache = LdrEntry;
/* Return success */
Status = STATUS_SUCCESS;
}
else
{
/* Make sure to NULL this */
LdrEntry = NULL;
}
Quickie:
/* The success path must have a valid loader entry */
ASSERT((LdrEntry != NULL) == NT_SUCCESS(Status));
/* Check if we got an entry and success */
DPRINT("Got LdrEntry->BaseDllName %wZ\n", LdrEntry ? &LdrEntry->BaseDllName : NULL);
if ((LdrEntry) && (NT_SUCCESS(Status)))
{
/* Check if the DLL is locked */
if ((LdrEntry->LoadCount != 0xFFFF) &&
!(Flags & LDR_GET_DLL_HANDLE_EX_UNCHANGED_REFCOUNT))
{
/* Check what to do with the load count */
if (Flags & LDR_GET_DLL_HANDLE_EX_PIN)
{
/* Pin it */
LdrEntry->LoadCount = 0xFFFF;
LoadFlag = LDRP_UPDATE_PIN;
}
else
{
/* Increase the load count */
LdrEntry->LoadCount++;
LoadFlag = LDRP_UPDATE_REFCOUNT;
}
/* Update the load count now */
LdrpUpdateLoadCount2(LdrEntry, LoadFlag);
LdrpClearLoadInProgress();
}
/* Check if the caller is requesting the handle */
if (DllHandle) *DllHandle = LdrEntry->DllBase;
}
/* Free string if needed */
if (DynamicString.Buffer) RtlFreeUnicodeString(&DynamicString);
/* Free the raw DLL Name if needed */
if (RawDllName.Buffer)
{
/* Free the heap-allocated buffer */
RtlFreeHeap(RtlGetProcessHeap(), 0, RawDllName.Buffer);
RawDllName.Buffer = NULL;
}
/* Release lock */
if (Locked)
{
LdrUnlockLoaderLock(LDR_UNLOCK_LOADER_LOCK_FLAG_RAISE_ON_ERRORS,
Cookie);
}
/* Return */
return Status;
}
/*
* @implemented
*/
NTSTATUS
NTAPI
LdrGetDllHandle(
_In_opt_ PWSTR DllPath,
_In_opt_ PULONG DllCharacteristics,
_In_ PUNICODE_STRING DllName,
_Out_ PVOID *DllHandle)
{
/* Call the newer API */
return LdrGetDllHandleEx(LDR_GET_DLL_HANDLE_EX_UNCHANGED_REFCOUNT,
DllPath,
DllCharacteristics,
DllName,
DllHandle);
}
/*
* @implemented
*/
NTSTATUS
NTAPI
LdrGetProcedureAddress(
_In_ PVOID BaseAddress,
_In_opt_ _When_(Ordinal == 0, _Notnull_) PANSI_STRING Name,
_In_opt_ _When_(Name == NULL, _In_range_(>, 0)) ULONG Ordinal,
_Out_ PVOID *ProcedureAddress)
{
/* Call the internal routine and tell it to execute DllInit */
return LdrpGetProcedureAddress(BaseAddress, Name, Ordinal, ProcedureAddress, TRUE);
}
/*
* @implemented
*/
NTSTATUS
NTAPI
LdrVerifyImageMatchesChecksum(
_In_ HANDLE FileHandle,
_In_ PLDR_CALLBACK Callback,
_In_ PVOID CallbackContext,
_Out_ PUSHORT ImageCharacteristics)
{
FILE_STANDARD_INFORMATION FileStandardInfo;
PIMAGE_IMPORT_DESCRIPTOR ImportData;
PIMAGE_SECTION_HEADER LastSection = NULL;
IO_STATUS_BLOCK IoStatusBlock;
PIMAGE_NT_HEADERS NtHeader;
HANDLE SectionHandle;
SIZE_T ViewSize;
PVOID ViewBase;
BOOLEAN Result, NoActualCheck;
NTSTATUS Status;
PVOID ImportName;
ULONG Size;
DPRINT("LdrVerifyImageMatchesChecksum() called\n");
/* If the handle has the magic KnownDll flag, skip actual checksums */
NoActualCheck = ((ULONG_PTR)FileHandle & 1);
/* Create the section */
Status = NtCreateSection(&SectionHandle,
SECTION_MAP_EXECUTE,
NULL,
NULL,
PAGE_EXECUTE,
SEC_COMMIT,
FileHandle);
if (!NT_SUCCESS(Status))
{
DPRINT1 ("NtCreateSection() failed (Status 0x%x)\n", Status);
return Status;
}
/* Map the section */
ViewSize = 0;
ViewBase = NULL;
Status = NtMapViewOfSection(SectionHandle,
NtCurrentProcess(),
&ViewBase,
0,
0,
NULL,
&ViewSize,
ViewShare,
0,
PAGE_EXECUTE);
if (!NT_SUCCESS(Status))
{
DPRINT1("NtMapViewOfSection() failed (Status 0x%x)\n", Status);
NtClose(SectionHandle);
return Status;
}
/* Get the file information */
Status = NtQueryInformationFile(FileHandle,
&IoStatusBlock,
&FileStandardInfo,
sizeof(FILE_STANDARD_INFORMATION),
FileStandardInformation);
if (!NT_SUCCESS(Status))
{
DPRINT1("NtMapViewOfSection() failed (Status 0x%x)\n", Status);
NtUnmapViewOfSection(NtCurrentProcess(), ViewBase);
NtClose(SectionHandle);
return Status;
}
/* Protect with SEH */
_SEH2_TRY
{
/* Check if this is the KnownDll hack */
if (NoActualCheck)
{
/* Don't actually do it */
Result = TRUE;
}
else
{
/* Verify the checksum */
Result = LdrVerifyMappedImageMatchesChecksum(ViewBase,
FileStandardInfo.EndOfFile.LowPart,
FileStandardInfo.EndOfFile.LowPart);
}
/* Check if a callback was supplied */
if ((Result) && (Callback))
{
/* Get the NT Header */
NtHeader = RtlImageNtHeader(ViewBase);
/* Check if caller requested this back */
if (ImageCharacteristics)
{
/* Return to caller */
*ImageCharacteristics = NtHeader->FileHeader.Characteristics;
}
/* Get the Import Directory Data */
ImportData = RtlImageDirectoryEntryToData(ViewBase,
FALSE,
IMAGE_DIRECTORY_ENTRY_IMPORT,
&Size);
/* Make sure there is one */
if (ImportData)
{
/* Loop the imports */
while (ImportData->Name)
{
/* Get the name */
ImportName = RtlImageRvaToVa(NtHeader,
ViewBase,
ImportData->Name,
&LastSection);
/* Notify the callback */
Callback(CallbackContext, ImportName);
ImportData++;
}
}
}
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
/* Fail the request returning STATUS_IMAGE_CHECKSUM_MISMATCH */
Result = FALSE;
}
_SEH2_END;
/* Unmap file and close handle */
NtUnmapViewOfSection(NtCurrentProcess(), ViewBase);
NtClose(SectionHandle);
/* Return status */
return Result ? Status : STATUS_IMAGE_CHECKSUM_MISMATCH;
}
NTSTATUS
NTAPI
LdrQueryProcessModuleInformationEx(
_In_opt_ ULONG ProcessId,
_Reserved_ ULONG Reserved,
_Out_writes_bytes_to_(Size, *ReturnedSize) PRTL_PROCESS_MODULES ModuleInformation,
_In_ ULONG Size,
_Out_opt_ PULONG ReturnedSize)
{
PLIST_ENTRY ModuleListHead, InitListHead;
PLIST_ENTRY Entry, InitEntry;
PLDR_DATA_TABLE_ENTRY Module, InitModule;
PRTL_PROCESS_MODULE_INFORMATION ModulePtr = NULL;
NTSTATUS Status = STATUS_SUCCESS;
ULONG UsedSize = FIELD_OFFSET(RTL_PROCESS_MODULES, Modules);
ANSI_STRING AnsiString;
PCHAR p;
DPRINT("LdrQueryProcessModuleInformation() called\n");
/* Acquire loader lock */
RtlEnterCriticalSection(NtCurrentPeb()->LoaderLock);
_SEH2_TRY
{
/* Check if we were given enough space */
if (Size < UsedSize)
{
Status = STATUS_INFO_LENGTH_MISMATCH;
}
else
{
ModuleInformation->NumberOfModules = 0;
ModulePtr = &ModuleInformation->Modules[0];
Status = STATUS_SUCCESS;
}
/* Traverse the list of modules */
ModuleListHead = &NtCurrentPeb()->Ldr->InLoadOrderModuleList;
Entry = ModuleListHead->Flink;
while (Entry != ModuleListHead)
{
Module = CONTAINING_RECORD(Entry, LDR_DATA_TABLE_ENTRY, InLoadOrderLinks);
DPRINT(" Module %wZ\n", &Module->FullDllName);
/* Increase the used size */
UsedSize += sizeof(RTL_PROCESS_MODULE_INFORMATION);
if (UsedSize > Size)
{
Status = STATUS_INFO_LENGTH_MISMATCH;
}
else
{
ModulePtr->ImageBase = Module->DllBase;
ModulePtr->ImageSize = Module->SizeOfImage;
ModulePtr->Flags = Module->Flags;
ModulePtr->LoadCount = Module->LoadCount;
ModulePtr->MappedBase = NULL;
ModulePtr->InitOrderIndex = 0;
ModulePtr->LoadOrderIndex = ModuleInformation->NumberOfModules;
/* Now get init order index by traversing init list */
InitListHead = &NtCurrentPeb()->Ldr->InInitializationOrderModuleList;
InitEntry = InitListHead->Flink;
while (InitEntry != InitListHead)
{
InitModule = CONTAINING_RECORD(InitEntry, LDR_DATA_TABLE_ENTRY, InInitializationOrderLinks);
/* Increase the index */
ModulePtr->InitOrderIndex++;
/* Quit the loop if our module is found */
if (InitModule == Module) break;
/* Advance to the next entry */
InitEntry = InitEntry->Flink;
}
/* Prepare ANSI string with the module's name */
AnsiString.Length = 0;
AnsiString.MaximumLength = sizeof(ModulePtr->FullPathName);
AnsiString.Buffer = ModulePtr->FullPathName;
RtlUnicodeStringToAnsiString(&AnsiString,
&Module->FullDllName,
FALSE);
/* Calculate OffsetToFileName field */
p = strrchr(ModulePtr->FullPathName, '\\');
if (p != NULL)
ModulePtr->OffsetToFileName = p - ModulePtr->FullPathName + 1;
else
ModulePtr->OffsetToFileName = 0;
/* Advance to the next module in the output list */
ModulePtr++;
/* Increase number of modules */
if (ModuleInformation)
ModuleInformation->NumberOfModules++;
}
/* Go to the next entry in the modules list */
Entry = Entry->Flink;
}
/* Set returned size if it was provided */
if (ReturnedSize)
*ReturnedSize = UsedSize;
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
/* Ignoring the exception */
} _SEH2_END;
/* Release the lock */
RtlLeaveCriticalSection(NtCurrentPeb()->LoaderLock);
DPRINT("LdrQueryProcessModuleInformation() done\n");
return Status;
}
/*
* @implemented
*/
NTSTATUS
NTAPI
LdrQueryProcessModuleInformation(
_Out_writes_bytes_to_(Size, *ReturnedSize) PRTL_PROCESS_MODULES ModuleInformation,
_In_ ULONG Size,
_Out_opt_ PULONG ReturnedSize)
{
/* Call Ex version of the API */
return LdrQueryProcessModuleInformationEx(0, 0, ModuleInformation, Size, ReturnedSize);
}
/*
* @implemented
*/
NTSTATUS
NTAPI
LdrEnumerateLoadedModules(
_Reserved_ ULONG ReservedFlag,
_In_ PLDR_ENUM_CALLBACK EnumProc,
_In_opt_ PVOID Context)
{
PLIST_ENTRY ListHead, ListEntry;
PLDR_DATA_TABLE_ENTRY LdrEntry;
NTSTATUS Status;
ULONG_PTR Cookie;
BOOLEAN Stop = FALSE;
/* Check parameters */
if ((ReservedFlag) || !(EnumProc)) return STATUS_INVALID_PARAMETER;
/* Acquire the loader lock */
Status = LdrLockLoaderLock(0, NULL, &Cookie);
if (!NT_SUCCESS(Status)) return Status;
/* Loop all the modules and call enum proc */
ListHead = &NtCurrentPeb()->Ldr->InLoadOrderModuleList;
ListEntry = ListHead->Flink;
while (ListHead != ListEntry)
{
/* Get the entry */
LdrEntry = CONTAINING_RECORD(ListEntry, LDR_DATA_TABLE_ENTRY, InLoadOrderLinks);
/* Call the enumeration proc inside SEH */
_SEH2_TRY
{
EnumProc(LdrEntry, Context, &Stop);
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
/* Ignoring the exception */
} _SEH2_END;
/* Break if we were asked to stop enumeration */
if (Stop)
{
break;
}
/* Advance to the next module */
ListEntry = ListEntry->Flink;
}
/* Release loader lock */
Status = LdrUnlockLoaderLock(0, Cookie);
ASSERT(NT_SUCCESS(Status));
/* Reset any successful status to STATUS_SUCCESS,
* but leave failure to the caller */
if (NT_SUCCESS(Status))
Status = STATUS_SUCCESS;
/* Return any possible failure status */
return Status;
}
/*
* @implemented
*/
NTSTATUS
NTAPI
LdrDisableThreadCalloutsForDll(
_In_ PVOID BaseAddress)
{
PLDR_DATA_TABLE_ENTRY LdrEntry;
NTSTATUS Status;
BOOLEAN LockHeld;
ULONG_PTR Cookie;
DPRINT("LdrDisableThreadCalloutsForDll (BaseAddress %p)\n", BaseAddress);
/* Don't do it during shutdown */
if (LdrpShutdownInProgress) return STATUS_SUCCESS;
/* Check if we should grab the lock */
LockHeld = FALSE;
if (!LdrpInLdrInit)
{
/* Grab the lock */
Status = LdrLockLoaderLock(0, NULL, &Cookie);
if (!NT_SUCCESS(Status)) return Status;
LockHeld = TRUE;
}
/* Make sure the DLL is valid and get its entry */
Status = STATUS_DLL_NOT_FOUND;
if (LdrpCheckForLoadedDllHandle(BaseAddress, &LdrEntry))
{
/* Get if it has a TLS slot */
if (!LdrEntry->TlsIndex)
{
/* It doesn't, so you're allowed to call this */
LdrEntry->Flags |= LDRP_DONT_CALL_FOR_THREADS;
Status = STATUS_SUCCESS;
}
}
/* Check if the lock was held */
if (LockHeld)
{
/* Release it */
LdrUnlockLoaderLock(LDR_UNLOCK_LOADER_LOCK_FLAG_RAISE_ON_ERRORS, Cookie);
}
/* Return the status */
return Status;
}
/*
* @implemented
*/
NTSTATUS
NTAPI
LdrAddRefDll(
_In_ ULONG Flags,
_In_ PVOID BaseAddress)
{
PLDR_DATA_TABLE_ENTRY LdrEntry;
NTSTATUS Status = STATUS_SUCCESS;
ULONG_PTR Cookie;
BOOLEAN Locked = FALSE;
/* Check for invalid flags */
if (Flags & ~(LDR_ADDREF_DLL_PIN))
{
/* Fail with invalid parameter status if so */
Status = STATUS_INVALID_PARAMETER;
goto quickie;
}
/* Acquire the loader lock if not in init phase */
if (!LdrpInLdrInit)
{
/* Acquire the lock */
Status = LdrLockLoaderLock(0, NULL, &Cookie);
if (!NT_SUCCESS(Status)) goto quickie;
Locked = TRUE;
}
/* Get this module's data table entry */
if (LdrpCheckForLoadedDllHandle(BaseAddress, &LdrEntry))
{
if (!LdrEntry)
{
/* Shouldn't happen */
Status = STATUS_INTERNAL_ERROR;
goto quickie;
}
/* If this is not a pinned module */
if (LdrEntry->LoadCount != 0xFFFF)
{
/* Update its load count */
if (Flags & LDR_ADDREF_DLL_PIN)
{
/* Pin it by setting load count to -1 */
LdrEntry->LoadCount = 0xFFFF;
LdrpUpdateLoadCount2(LdrEntry, LDRP_UPDATE_PIN);
}
else
{
/* Increase its load count by one */
LdrEntry->LoadCount++;
LdrpUpdateLoadCount2(LdrEntry, LDRP_UPDATE_REFCOUNT);
}
/* Clear load in progress */
LdrpClearLoadInProgress();
}
}
else
{
/* There was an error getting this module's handle, return invalid param status */
Status = STATUS_INVALID_PARAMETER;
}
quickie:
/* Check for error case */
if (!NT_SUCCESS(Status))
{
/* Print debug information */
if ((ShowSnaps) || ((Status != STATUS_NO_SUCH_FILE) &&
(Status != STATUS_DLL_NOT_FOUND) &&
(Status != STATUS_OBJECT_NAME_NOT_FOUND)))
{
DPRINT1("LDR: LdrAddRefDll(%p) 0x%08lx\n", BaseAddress, Status);
}
}
/* Release the lock if needed */
if (Locked) LdrUnlockLoaderLock(LDR_UNLOCK_LOADER_LOCK_FLAG_RAISE_ON_ERRORS, Cookie);
return Status;
}
/*
* @implemented
*/
NTSTATUS
NTAPI
LdrUnloadDll(
_In_ PVOID BaseAddress)
{
NTSTATUS Status = STATUS_SUCCESS;
PPEB Peb = NtCurrentPeb();
PLDR_DATA_TABLE_ENTRY LdrEntry, CurrentEntry;
PVOID EntryPoint;
PLIST_ENTRY NextEntry;
LIST_ENTRY UnloadList;
RTL_CALLER_ALLOCATED_ACTIVATION_CONTEXT_STACK_FRAME_EXTENDED ActCtx;
PVOID CorImageData;
ULONG ComSectionSize;
/* Get the LDR Lock */
if (!LdrpInLdrInit) RtlEnterCriticalSection(Peb->LoaderLock);
/* Increase the unload count */
LdrpActiveUnloadCount++;
/* Skip unload */
if (LdrpShutdownInProgress) goto Quickie;
/* Make sure the DLL is valid and get its entry */
if (!LdrpCheckForLoadedDllHandle(BaseAddress, &LdrEntry))
{
Status = STATUS_DLL_NOT_FOUND;
goto Quickie;
}
/* Check the current Load Count */
if (LdrEntry->LoadCount != 0xFFFF)
{
/* Decrease it */
LdrEntry->LoadCount--;
/* If it's a dll */
if (LdrEntry->Flags & LDRP_IMAGE_DLL)
{
/* Set up the Act Ctx */
ActCtx.Size = sizeof(ActCtx);
ActCtx.Format = RTL_CALLER_ALLOCATED_ACTIVATION_CONTEXT_STACK_FRAME_FORMAT_WHISTLER;
RtlZeroMemory(&ActCtx.Frame, sizeof(RTL_ACTIVATION_CONTEXT_STACK_FRAME));
/* Activate the ActCtx */
RtlActivateActivationContextUnsafeFast(&ActCtx,
LdrEntry->EntryPointActivationContext);
/* Update the load count */
LdrpUpdateLoadCount2(LdrEntry, LDRP_UPDATE_DEREFCOUNT);
/* Release the context */
RtlDeactivateActivationContextUnsafeFast(&ActCtx);
}
}
else
{
/* The DLL is locked */
goto Quickie;
}
/* Show debug message */
if (ShowSnaps) DPRINT1("LDR: UNINIT LIST\n");
/* Check if this is our only unload and initialize the list if so */
if (LdrpActiveUnloadCount == 1) InitializeListHead(&LdrpUnloadHead);
/* Loop the modules to build the list */
NextEntry = Peb->Ldr->InInitializationOrderModuleList.Blink;
while (NextEntry != &Peb->Ldr->InInitializationOrderModuleList)
{
/* Get the entry */
LdrEntry = CONTAINING_RECORD(NextEntry,
LDR_DATA_TABLE_ENTRY,
InInitializationOrderLinks);
NextEntry = NextEntry->Blink;
/* Remove flag */
LdrEntry->Flags &= ~LDRP_UNLOAD_IN_PROGRESS;
/* If the load count is now 0 */
if (!LdrEntry->LoadCount)
{
/* Show message */
if (ShowSnaps)
{
DPRINT1("(%lu) [%ws] %ws (%lx) deinit %p\n",
LdrpActiveUnloadCount,
LdrEntry->BaseDllName.Buffer,
LdrEntry->FullDllName.Buffer,
(ULONG)LdrEntry->LoadCount,
LdrEntry->EntryPoint);
}
/* Call Shim Engine and notify */
if (g_ShimsEnabled)
{
VOID (NTAPI* SE_DllUnloaded)(PVOID) = RtlDecodeSystemPointer(g_pfnSE_DllUnloaded);
SE_DllUnloaded(LdrEntry);
}
/* Unlink it */
CurrentEntry = LdrEntry;
RemoveEntryList(&CurrentEntry->InInitializationOrderLinks);
RemoveEntryList(&CurrentEntry->InMemoryOrderLinks);
RemoveEntryList(&CurrentEntry->HashLinks);
/* If there's more then one active unload */
if (LdrpActiveUnloadCount > 1)
{
/* Flush the cached DLL handle and clear the list */
LdrpLoadedDllHandleCache = NULL;
CurrentEntry->InMemoryOrderLinks.Flink = NULL;
}
/* Add the entry on the unload list */
InsertTailList(&LdrpUnloadHead, &CurrentEntry->HashLinks);
}
}
/* Only call the entrypoints once */
if (LdrpActiveUnloadCount > 1) goto Quickie;
/* Now loop the unload list and create our own */
InitializeListHead(&UnloadList);
CurrentEntry = NULL;
NextEntry = LdrpUnloadHead.Flink;
while (NextEntry != &LdrpUnloadHead)
{
/* Get the current entry */
LdrEntry = CONTAINING_RECORD(NextEntry, LDR_DATA_TABLE_ENTRY, HashLinks);
LdrpRecordUnloadEvent(LdrEntry);
/* Set the entry and clear it from the list */
CurrentEntry = LdrEntry;
LdrpLoadedDllHandleCache = NULL;
CurrentEntry->InMemoryOrderLinks.Flink = NULL;
/* Move it from the global to the local list */
RemoveEntryList(&CurrentEntry->HashLinks);
InsertTailList(&UnloadList, &CurrentEntry->HashLinks);
/* Get the entrypoint */
EntryPoint = LdrEntry->EntryPoint;
/* Check if we should call it */
if ((EntryPoint) && (LdrEntry->Flags & LDRP_PROCESS_ATTACH_CALLED))
{
/* Show message */
if (ShowSnaps)
{
DPRINT1("LDR: Calling deinit %p\n", EntryPoint);
}
/* Set up the Act Ctx */
ActCtx.Size = sizeof(ActCtx);
ActCtx.Format = RTL_CALLER_ALLOCATED_ACTIVATION_CONTEXT_STACK_FRAME_FORMAT_WHISTLER;
RtlZeroMemory(&ActCtx.Frame, sizeof(RTL_ACTIVATION_CONTEXT_STACK_FRAME));
/* Activate the ActCtx */
RtlActivateActivationContextUnsafeFast(&ActCtx,
LdrEntry->EntryPointActivationContext);
/* Call the entrypoint */
_SEH2_TRY
{
LdrpCallInitRoutine(LdrEntry->EntryPoint,
LdrEntry->DllBase,
DLL_PROCESS_DETACH,
NULL);
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
DPRINT1("WARNING: Exception 0x%x during LdrpCallInitRoutine(DLL_PROCESS_DETACH) for %wZ\n",
_SEH2_GetExceptionCode(), &LdrEntry->BaseDllName);
}
_SEH2_END;
/* Release the context */
RtlDeactivateActivationContextUnsafeFast(&ActCtx);
}
/* Remove it from the list */
RemoveEntryList(&CurrentEntry->InLoadOrderLinks);
CurrentEntry = NULL;
NextEntry = LdrpUnloadHead.Flink;
}
/* Now loop our local list */
NextEntry = UnloadList.Flink;
while (NextEntry != &UnloadList)
{
/* Get the entry */
LdrEntry = CONTAINING_RECORD(NextEntry, LDR_DATA_TABLE_ENTRY, HashLinks);
NextEntry = NextEntry->Flink;
CurrentEntry = LdrEntry;
/* Notify Application Verifier */
if (Peb->NtGlobalFlag & FLG_HEAP_ENABLE_TAIL_CHECK)
{
AVrfDllUnloadNotification(LdrEntry);
}
/* Show message */
if (ShowSnaps)
{
DPRINT1("LDR: Unmapping [%ws]\n", LdrEntry->BaseDllName.Buffer);
}
/* Check if this is a .NET executable */
CorImageData = RtlImageDirectoryEntryToData(LdrEntry->DllBase,
TRUE,
IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR,
&ComSectionSize);
if (CorImageData)
{
/* FIXME */
DPRINT1(".NET Images are not supported yet\n");
}
/* Check if we should unmap*/
if (!(CurrentEntry->Flags & LDR_COR_OWNS_UNMAP))
{
/* Unmap the DLL */
Status = NtUnmapViewOfSection(NtCurrentProcess(),
CurrentEntry->DllBase);
ASSERT(NT_SUCCESS(Status));
}
/* Unload the alternate resource module, if any */
LdrUnloadAlternateResourceModule(CurrentEntry->DllBase);
/* FIXME: Send shutdown notification */
//LdrpSendDllNotifications(CurrentEntry, 2, LdrpShutdownInProgress);
/* Check if a Hotpatch is active */
if (LdrEntry->PatchInformation)
{
/* FIXME */
DPRINT1("We don't support Hotpatching yet\n");
}
/* Deallocate the Entry */
LdrpFinalizeAndDeallocateDataTableEntry(CurrentEntry);
/* If this is the cached entry, invalidate it */
if (LdrpGetModuleHandleCache == CurrentEntry)
{
LdrpGetModuleHandleCache = NULL;
}
}
Quickie:
/* Decrease unload count */
LdrpActiveUnloadCount--;
if (!LdrpInLdrInit) RtlLeaveCriticalSection(Peb->LoaderLock);
/* Return to caller */
return Status;
}
/*
* @implemented
*/
BOOLEAN
NTAPI
RtlDllShutdownInProgress(VOID)
{
/* Return the internal global */
return LdrpShutdownInProgress;
}
/*
* @implemented
*/
PIMAGE_BASE_RELOCATION
NTAPI
LdrProcessRelocationBlock(
_In_ ULONG_PTR Address,
_In_ ULONG Count,
_In_ PUSHORT TypeOffset,
_In_ LONG_PTR Delta)
{
return LdrProcessRelocationBlockLongLong(Address, Count, TypeOffset, Delta);
}
/* FIXME: Add to ntstatus.mc */
#define STATUS_MUI_FILE_NOT_FOUND ((NTSTATUS)0xC00B0001L)
/*
* @implemented
*/
NTSTATUS
NTAPI
LdrLoadAlternateResourceModule(
_In_ PVOID Module,
_In_ PWSTR Buffer)
{
/* Is MUI Support enabled? */
if (!LdrAlternateResourcesEnabled()) return STATUS_SUCCESS;
UNIMPLEMENTED;
return STATUS_MUI_FILE_NOT_FOUND;
}
/*
* @implemented
*/
BOOLEAN
NTAPI
LdrUnloadAlternateResourceModule(
_In_ PVOID BaseAddress)
{
ULONG_PTR Cookie;
/* Acquire the loader lock */
LdrLockLoaderLock(LDR_LOCK_LOADER_LOCK_FLAG_RAISE_ON_ERRORS, NULL, &Cookie);
/* Check if there's any alternate resources loaded */
if (AlternateResourceModuleCount)
{
UNIMPLEMENTED;
}
/* Release the loader lock */
LdrUnlockLoaderLock(LDR_UNLOCK_LOADER_LOCK_FLAG_RAISE_ON_ERRORS, Cookie);
/* All done */
return TRUE;
}
/*
* @unimplemented
*/
BOOLEAN
NTAPI
LdrFlushAlternateResourceModules(VOID)
{
UNIMPLEMENTED;
return FALSE;
}
/*
* @unimplemented
* See https://www.kernelmode.info/forum/viewtopic.php?t=991
*/
NTSTATUS
NTAPI
LdrSetAppCompatDllRedirectionCallback(
_In_ ULONG Flags,
_In_ PLDR_APP_COMPAT_DLL_REDIRECTION_CALLBACK_FUNCTION CallbackFunction,
_In_opt_ PVOID CallbackData)
{
UNIMPLEMENTED;
return STATUS_NOT_IMPLEMENTED;
}
BOOLEAN
NTAPI
LdrInitShimEngineDynamic(IN PVOID BaseAddress)
{
ULONG_PTR Cookie;
NTSTATUS Status = LdrLockLoaderLock(0, NULL, &Cookie);
if (NT_SUCCESS(Status))
{
if (!g_pShimEngineModule)
{
g_pShimEngineModule = BaseAddress;
LdrpGetShimEngineInterface();
}
LdrUnlockLoaderLock(0, Cookie);
return TRUE;
}
return FALSE;
}
/* EOF */
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