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[NTOS:IO] IopInitializeDriverModule(): Set the DRVO_LEGACY_DRIVER flag if the driver is not WDM. (#3749)

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Hermès Bélusca-Maïto 2021-06-11 01:30:40 +02:00
parent 18d15bcc8b
commit 1fd730b781
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1 changed files with 15 additions and 1 deletions
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16
ntoskrnl/io/iomgr/driver.c
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@ -447,6 +447,16 @@ IopInitializeDriverModule(
DPRINT("Driver name: '%wZ'\n", &DriverName); DPRINT("Driver name: '%wZ'\n", &DriverName);
/*
* Retrieve the driver's PE image NT header and perform some sanity checks.
* NOTE: We suppose that since the driver has been successfully loaded,
* its NT and optional headers are all valid and have expected sizes.
*/
PIMAGE_NT_HEADERS NtHeaders = RtlImageNtHeader(ModuleObject->DllBase);
ASSERT(NtHeaders);
ASSERT(ModuleObject->SizeOfImage == NtHeaders->OptionalHeader.SizeOfImage);
ASSERT(ModuleObject->EntryPoint == RVA(ModuleObject->DllBase, NtHeaders->OptionalHeader.AddressOfEntryPoint));
/* Obtain the registry path for the DriverInit routine */ /* Obtain the registry path for the DriverInit routine */
PKEY_NAME_INFORMATION nameInfo; PKEY_NAME_INFORMATION nameInfo;
ULONG infoLength; ULONG infoLength;
@ -524,7 +534,11 @@ IopInitializeDriverModule(
RtlZeroMemory(driverObject, ObjectSize); RtlZeroMemory(driverObject, ObjectSize);
driverObject->Type = IO_TYPE_DRIVER; driverObject->Type = IO_TYPE_DRIVER;
driverObject->Size = sizeof(DRIVER_OBJECT); driverObject->Size = sizeof(DRIVER_OBJECT);
driverObject->Flags = DRVO_LEGACY_DRIVER; // TODO: check the WDM_DRIVER flag on the module
/* Set the legacy flag if this is not a WDM driver */
if (!(NtHeaders->OptionalHeader.DllCharacteristics & IMAGE_DLLCHARACTERISTICS_WDM_DRIVER))
driverObject->Flags |= DRVO_LEGACY_DRIVER;
driverObject->DriverSection = ModuleObject; driverObject->DriverSection = ModuleObject;
driverObject->DriverStart = ModuleObject->DllBase; driverObject->DriverStart = ModuleObject->DllBase;
driverObject->DriverSize = ModuleObject->SizeOfImage; driverObject->DriverSize = ModuleObject->SizeOfImage;