2017-11-23 22:26:10 +00:00
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/*++
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Copyright (c) 1989-2000 Microsoft Corporation
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Module Name:
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FatInit.c
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Abstract:
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This module implements the DRIVER_INITIALIZATION routine for Fat
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--*/
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#include "fatprocs.h"
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DRIVER_INITIALIZE DriverEntry;
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NTSTATUS
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NTAPI
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DriverEntry(
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_In_ PDRIVER_OBJECT DriverObject,
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_In_ PUNICODE_STRING RegistryPath
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);
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_Function_class_(DRIVER_UNLOAD)
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VOID
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NTAPI
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FatUnload(
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_In_ _Unreferenced_parameter_ PDRIVER_OBJECT DriverObject
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);
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NTSTATUS
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FatGetCompatibilityModeValue(
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IN PUNICODE_STRING ValueName,
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IN OUT PULONG Value
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);
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BOOLEAN
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FatIsFujitsuFMR (
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);
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text(INIT, DriverEntry)
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#pragma alloc_text(INIT, FatGetCompatibilityModeValue)
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#pragma alloc_text(INIT, FatIsFujitsuFMR)
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//#pragma alloc_text(PAGE, FatUnload)
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#endif
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#define COMPATIBILITY_MODE_KEY_NAME L"\\Registry\\Machine\\System\\CurrentControlSet\\Control\\FileSystem"
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#define COMPATIBILITY_MODE_VALUE_NAME L"Win31FileSystem"
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#define CODE_PAGE_INVARIANCE_VALUE_NAME L"FatDisableCodePageInvariance"
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#define KEY_WORK_AREA ((sizeof(KEY_VALUE_FULL_INFORMATION) + \
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sizeof(ULONG)) + 64)
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#define REGISTRY_HARDWARE_DESCRIPTION_W \
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L"\\Registry\\Machine\\Hardware\\DESCRIPTION\\System"
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#define REGISTRY_MACHINE_IDENTIFIER_W L"Identifier"
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#define FUJITSU_FMR_NAME_W L"FUJITSU FMR-"
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NTSTATUS
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NTAPI
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DriverEntry(
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_In_ PDRIVER_OBJECT DriverObject,
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_In_ PUNICODE_STRING RegistryPath
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)
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/*++
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Routine Description:
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This is the initialization routine for the Fat file system
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device driver. This routine creates the device object for the FileSystem
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device and performs all other driver initialization.
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Arguments:
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DriverObject - Pointer to driver object created by the system.
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Return Value:
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NTSTATUS - The function value is the final status from the initialization
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operation.
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--*/
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{
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USHORT MaxDepth;
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NTSTATUS Status;
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UNICODE_STRING UnicodeString;
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FS_FILTER_CALLBACKS FilterCallbacks;
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UNICODE_STRING ValueName;
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ULONG Value;
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UNREFERENCED_PARAMETER( RegistryPath );
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//
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// Create the device object for disks. To avoid problems with filters who
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// know this name, we must keep it.
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//
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RtlInitUnicodeString( &UnicodeString, L"\\Fat" );
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Status = IoCreateDevice( DriverObject,
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0,
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&UnicodeString,
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FILE_DEVICE_DISK_FILE_SYSTEM,
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0,
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FALSE,
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&FatDiskFileSystemDeviceObject );
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if (!NT_SUCCESS( Status )) {
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return Status;
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}
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//
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// Create the device object for "cdroms".
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//
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RtlInitUnicodeString( &UnicodeString, L"\\FatCdrom" );
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Status = IoCreateDevice( DriverObject,
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0,
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&UnicodeString,
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FILE_DEVICE_CD_ROM_FILE_SYSTEM,
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0,
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FALSE,
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&FatCdromFileSystemDeviceObject );
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if (!NT_SUCCESS( Status )) {
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IoDeleteDevice( FatDiskFileSystemDeviceObject);
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return Status;
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}
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#ifdef _MSC_VER
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#pragma prefast( push )
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#pragma prefast( disable:28155, "these are all correct" )
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#pragma prefast( disable:28169, "these are all correct" )
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#pragma prefast( disable:28175, "this is a filesystem, touching FastIoDispatch is allowed" )
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#endif
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DriverObject->DriverUnload = FatUnload;
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//
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// Note that because of the way data caching is done, we set neither
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// the Direct I/O or Buffered I/O bit in DeviceObject->Flags. If
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// data is not in the cache, or the request is not buffered, we may,
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// set up for Direct I/O by hand.
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//
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//
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// Initialize the driver object with this driver's entry points.
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//
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DriverObject->MajorFunction[IRP_MJ_CREATE] = (PDRIVER_DISPATCH)FatFsdCreate;
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DriverObject->MajorFunction[IRP_MJ_CLOSE] = (PDRIVER_DISPATCH)FatFsdClose;
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DriverObject->MajorFunction[IRP_MJ_READ] = (PDRIVER_DISPATCH)FatFsdRead;
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DriverObject->MajorFunction[IRP_MJ_WRITE] = (PDRIVER_DISPATCH)FatFsdWrite;
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DriverObject->MajorFunction[IRP_MJ_QUERY_INFORMATION] = (PDRIVER_DISPATCH)FatFsdQueryInformation;
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DriverObject->MajorFunction[IRP_MJ_SET_INFORMATION] = (PDRIVER_DISPATCH)FatFsdSetInformation;
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DriverObject->MajorFunction[IRP_MJ_QUERY_EA] = (PDRIVER_DISPATCH)FatFsdQueryEa;
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DriverObject->MajorFunction[IRP_MJ_SET_EA] = (PDRIVER_DISPATCH)FatFsdSetEa;
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DriverObject->MajorFunction[IRP_MJ_FLUSH_BUFFERS] = (PDRIVER_DISPATCH)FatFsdFlushBuffers;
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DriverObject->MajorFunction[IRP_MJ_QUERY_VOLUME_INFORMATION] = (PDRIVER_DISPATCH)FatFsdQueryVolumeInformation;
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DriverObject->MajorFunction[IRP_MJ_SET_VOLUME_INFORMATION] = (PDRIVER_DISPATCH)FatFsdSetVolumeInformation;
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DriverObject->MajorFunction[IRP_MJ_CLEANUP] = (PDRIVER_DISPATCH)FatFsdCleanup;
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DriverObject->MajorFunction[IRP_MJ_DIRECTORY_CONTROL] = (PDRIVER_DISPATCH)FatFsdDirectoryControl;
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DriverObject->MajorFunction[IRP_MJ_FILE_SYSTEM_CONTROL] = (PDRIVER_DISPATCH)FatFsdFileSystemControl;
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DriverObject->MajorFunction[IRP_MJ_LOCK_CONTROL] = (PDRIVER_DISPATCH)FatFsdLockControl;
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DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = (PDRIVER_DISPATCH)FatFsdDeviceControl;
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DriverObject->MajorFunction[IRP_MJ_SHUTDOWN] = (PDRIVER_DISPATCH)FatFsdShutdown;
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DriverObject->MajorFunction[IRP_MJ_PNP] = (PDRIVER_DISPATCH)FatFsdPnp;
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DriverObject->FastIoDispatch = &FatFastIoDispatch;
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RtlZeroMemory(&FatFastIoDispatch, sizeof(FatFastIoDispatch));
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FatFastIoDispatch.SizeOfFastIoDispatch = sizeof(FAST_IO_DISPATCH);
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FatFastIoDispatch.FastIoCheckIfPossible = FatFastIoCheckIfPossible; // CheckForFastIo
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FatFastIoDispatch.FastIoRead = FsRtlCopyRead; // Read
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FatFastIoDispatch.FastIoWrite = FsRtlCopyWrite; // Write
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FatFastIoDispatch.FastIoQueryBasicInfo = FatFastQueryBasicInfo; // QueryBasicInfo
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FatFastIoDispatch.FastIoQueryStandardInfo = FatFastQueryStdInfo; // QueryStandardInfo
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FatFastIoDispatch.FastIoLock = FatFastLock; // Lock
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FatFastIoDispatch.FastIoUnlockSingle = FatFastUnlockSingle; // UnlockSingle
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FatFastIoDispatch.FastIoUnlockAll = FatFastUnlockAll; // UnlockAll
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FatFastIoDispatch.FastIoUnlockAllByKey = FatFastUnlockAllByKey; // UnlockAllByKey
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FatFastIoDispatch.FastIoQueryNetworkOpenInfo = FatFastQueryNetworkOpenInfo;
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FatFastIoDispatch.AcquireForCcFlush = FatAcquireForCcFlush;
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FatFastIoDispatch.ReleaseForCcFlush = FatReleaseForCcFlush;
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FatFastIoDispatch.MdlRead = FsRtlMdlReadDev;
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FatFastIoDispatch.MdlReadComplete = FsRtlMdlReadCompleteDev;
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FatFastIoDispatch.PrepareMdlWrite = FsRtlPrepareMdlWriteDev;
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FatFastIoDispatch.MdlWriteComplete = FsRtlMdlWriteCompleteDev;
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#ifdef _MSC_VER
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#pragma prefast( pop )
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#endif
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//
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// Initialize the filter callbacks we use.
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//
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RtlZeroMemory( &FilterCallbacks,
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sizeof(FS_FILTER_CALLBACKS) );
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FilterCallbacks.SizeOfFsFilterCallbacks = sizeof(FS_FILTER_CALLBACKS);
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FilterCallbacks.PreAcquireForSectionSynchronization = FatFilterCallbackAcquireForCreateSection;
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Status = FsRtlRegisterFileSystemFilterCallbacks( DriverObject,
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&FilterCallbacks );
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if (!NT_SUCCESS( Status )) {
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IoDeleteDevice( FatDiskFileSystemDeviceObject );
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IoDeleteDevice( FatCdromFileSystemDeviceObject );
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return Status;
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}
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//
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// Initialize the global data structures
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//
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//
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// The FatData record
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//
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RtlZeroMemory( &FatData, sizeof(FAT_DATA));
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FatData.NodeTypeCode = FAT_NTC_DATA_HEADER;
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FatData.NodeByteSize = sizeof(FAT_DATA);
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InitializeListHead(&FatData.VcbQueue);
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FatData.DriverObject = DriverObject;
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FatData.DiskFileSystemDeviceObject = FatDiskFileSystemDeviceObject;
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FatData.CdromFileSystemDeviceObject = FatCdromFileSystemDeviceObject;
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//
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// This list head keeps track of closes yet to be done.
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//
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InitializeListHead( &FatData.AsyncCloseList );
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InitializeListHead( &FatData.DelayedCloseList );
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FatData.FatCloseItem = IoAllocateWorkItem( FatDiskFileSystemDeviceObject);
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if (FatData.FatCloseItem == NULL) {
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IoDeleteDevice (FatDiskFileSystemDeviceObject);
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IoDeleteDevice (FatCdromFileSystemDeviceObject);
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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//
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// Allocate the zero page
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//
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FatData.ZeroPage = ExAllocatePoolWithTag( NonPagedPoolNx, PAGE_SIZE, 'ZtaF' );
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if (FatData.ZeroPage == NULL) {
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IoDeleteDevice (FatDiskFileSystemDeviceObject);
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IoDeleteDevice (FatCdromFileSystemDeviceObject);
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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RtlZeroMemory( FatData.ZeroPage, PAGE_SIZE );
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//
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// Now initialize our general purpose spinlock (gag) and figure out how
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// deep and wide we want our delayed lists (along with fooling ourselves
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// about the lookaside depths).
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//
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KeInitializeSpinLock( &FatData.GeneralSpinLock );
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switch ( MmQuerySystemSize() ) {
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case MmSmallSystem:
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MaxDepth = 4;
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FatMaxDelayedCloseCount = FAT_MAX_DELAYED_CLOSES;
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break;
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case MmMediumSystem:
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MaxDepth = 8;
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FatMaxDelayedCloseCount = 4 * FAT_MAX_DELAYED_CLOSES;
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break;
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case MmLargeSystem:
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default:
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MaxDepth = 16;
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FatMaxDelayedCloseCount = 16 * FAT_MAX_DELAYED_CLOSES;
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break;
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}
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//
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// Initialize the cache manager callback routines
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//
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FatData.CacheManagerCallbacks.AcquireForLazyWrite = &FatAcquireFcbForLazyWrite;
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FatData.CacheManagerCallbacks.ReleaseFromLazyWrite = &FatReleaseFcbFromLazyWrite;
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FatData.CacheManagerCallbacks.AcquireForReadAhead = &FatAcquireFcbForReadAhead;
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FatData.CacheManagerCallbacks.ReleaseFromReadAhead = &FatReleaseFcbFromReadAhead;
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FatData.CacheManagerNoOpCallbacks.AcquireForLazyWrite = &FatNoOpAcquire;
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FatData.CacheManagerNoOpCallbacks.ReleaseFromLazyWrite = &FatNoOpRelease;
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FatData.CacheManagerNoOpCallbacks.AcquireForReadAhead = &FatNoOpAcquire;
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FatData.CacheManagerNoOpCallbacks.ReleaseFromReadAhead = &FatNoOpRelease;
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//
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// Set up global pointer to our process.
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//
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FatData.OurProcess = PsGetCurrentProcess();
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//
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// Setup the number of processors we support for statistics as the current number
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// running.
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//
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#if (NTDDI_VERSION >= NTDDI_VISTA)
|
|
|
|
|
FatData.NumberProcessors = KeQueryActiveProcessorCount( NULL );
|
|
|
|
|
#else
|
|
|
|
|
FatData.NumberProcessors = KeNumberProcessors;
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
//
|
|
|
|
|
// Read the registry to determine if we are in ChicagoMode.
|
|
|
|
|
//
|
|
|
|
|
|
|
|
|
|
ValueName.Buffer = COMPATIBILITY_MODE_VALUE_NAME;
|
|
|
|
|
ValueName.Length = sizeof(COMPATIBILITY_MODE_VALUE_NAME) - sizeof(WCHAR);
|
|
|
|
|
ValueName.MaximumLength = sizeof(COMPATIBILITY_MODE_VALUE_NAME);
|
|
|
|
|
|
|
|
|
|
Status = FatGetCompatibilityModeValue( &ValueName, &Value );
|
|
|
|
|
|
|
|
|
|
if (NT_SUCCESS(Status) && FlagOn(Value, 1)) {
|
|
|
|
|
|
|
|
|
|
FatData.ChicagoMode = FALSE;
|
|
|
|
|
|
|
|
|
|
} else {
|
|
|
|
|
|
|
|
|
|
FatData.ChicagoMode = TRUE;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
//
|
|
|
|
|
// Read the registry to determine if we are going to generate LFNs
|
|
|
|
|
// for valid 8.3 names with extended characters.
|
|
|
|
|
//
|
|
|
|
|
|
|
|
|
|
ValueName.Buffer = CODE_PAGE_INVARIANCE_VALUE_NAME;
|
|
|
|
|
ValueName.Length = sizeof(CODE_PAGE_INVARIANCE_VALUE_NAME) - sizeof(WCHAR);
|
|
|
|
|
ValueName.MaximumLength = sizeof(CODE_PAGE_INVARIANCE_VALUE_NAME);
|
|
|
|
|
|
|
|
|
|
Status = FatGetCompatibilityModeValue( &ValueName, &Value );
|
|
|
|
|
|
|
|
|
|
if (NT_SUCCESS(Status) && FlagOn(Value, 1)) {
|
|
|
|
|
|
|
|
|
|
FatData.CodePageInvariant = FALSE;
|
|
|
|
|
|
|
|
|
|
} else {
|
|
|
|
|
|
|
|
|
|
FatData.CodePageInvariant = TRUE;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
//
|
|
|
|
|
// Initialize our global resource and fire up the lookaside lists.
|
|
|
|
|
//
|
|
|
|
|
|
|
|
|
|
ExInitializeResourceLite( &FatData.Resource );
|
|
|
|
|
|
|
|
|
|
ExInitializeNPagedLookasideList( &FatIrpContextLookasideList,
|
|
|
|
|
NULL,
|
|
|
|
|
NULL,
|
|
|
|
|
POOL_NX_ALLOCATION | POOL_RAISE_IF_ALLOCATION_FAILURE,
|
|
|
|
|
sizeof(IRP_CONTEXT),
|
|
|
|
|
TAG_IRP_CONTEXT,
|
|
|
|
|
MaxDepth );
|
|
|
|
|
|
|
|
|
|
ExInitializeNPagedLookasideList( &FatNonPagedFcbLookasideList,
|
|
|
|
|
NULL,
|
|
|
|
|
NULL,
|
|
|
|
|
POOL_NX_ALLOCATION | POOL_RAISE_IF_ALLOCATION_FAILURE,
|
|
|
|
|
sizeof(NON_PAGED_FCB),
|
|
|
|
|
TAG_FCB_NONPAGED,
|
|
|
|
|
MaxDepth );
|
|
|
|
|
|
|
|
|
|
ExInitializeNPagedLookasideList( &FatEResourceLookasideList,
|
|
|
|
|
NULL,
|
|
|
|
|
NULL,
|
|
|
|
|
POOL_NX_ALLOCATION | POOL_RAISE_IF_ALLOCATION_FAILURE,
|
|
|
|
|
sizeof(ERESOURCE),
|
|
|
|
|
TAG_ERESOURCE,
|
|
|
|
|
MaxDepth );
|
|
|
|
|
|
|
|
|
|
ExInitializeSListHead( &FatCloseContextSList );
|
|
|
|
|
ExInitializeFastMutex( &FatCloseQueueMutex );
|
|
|
|
|
KeInitializeEvent( &FatReserveEvent, SynchronizationEvent, TRUE );
|
|
|
|
|
|
|
|
|
|
//
|
|
|
|
|
// Register the file system with the I/O system
|
|
|
|
|
//
|
|
|
|
|
|
|
|
|
|
IoRegisterFileSystem(FatDiskFileSystemDeviceObject);
|
|
|
|
|
ObReferenceObject (FatDiskFileSystemDeviceObject);
|
|
|
|
|
IoRegisterFileSystem(FatCdromFileSystemDeviceObject);
|
|
|
|
|
ObReferenceObject (FatCdromFileSystemDeviceObject);
|
|
|
|
|
|
|
|
|
|
//
|
|
|
|
|
// Find out if we are running an a FujitsuFMR machine.
|
|
|
|
|
//
|
|
|
|
|
|
|
|
|
|
FatData.FujitsuFMR = FatIsFujitsuFMR();
|
|
|
|
|
|
|
|
|
|
#if (NTDDI_VERSION >= NTDDI_WIN8)
|
|
|
|
|
|
|
|
|
|
//
|
|
|
|
|
// Find out global disk accounting state, cache the result
|
|
|
|
|
//
|
|
|
|
|
|
|
|
|
|
FatDiskAccountingEnabled = PsIsDiskCountersEnabled();
|
|
|
|
|
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
//
|
|
|
|
|
// And return to our caller
|
|
|
|
|
//
|
|
|
|
|
|
|
|
|
|
return( STATUS_SUCCESS );
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
_Function_class_(DRIVER_UNLOAD)
|
|
|
|
|
VOID
|
|
|
|
|
NTAPI
|
|
|
|
|
FatUnload(
|
|
|
|
|
_In_ _Unreferenced_parameter_ PDRIVER_OBJECT DriverObject
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
/*++
|
|
|
|
|
|
|
|
|
|
Routine Description:
|
|
|
|
|
|
|
|
|
|
This is the unload routine for the filesystem
|
|
|
|
|
|
|
|
|
|
Arguments:
|
|
|
|
|
|
|
|
|
|
DriverObject - Pointer to driver object created by the system.
|
|
|
|
|
|
|
|
|
|
Return Value:
|
|
|
|
|
|
|
|
|
|
None
|
|
|
|
|
|
|
|
|
|
--*/
|
|
|
|
|
|
|
|
|
|
{
|
|
|
|
|
UNREFERENCED_PARAMETER( DriverObject );
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
ExDeleteNPagedLookasideList (&FatEResourceLookasideList);
|
|
|
|
|
ExDeleteNPagedLookasideList (&FatNonPagedFcbLookasideList);
|
|
|
|
|
ExDeleteNPagedLookasideList (&FatIrpContextLookasideList);
|
|
|
|
|
ExDeleteResourceLite( &FatData.Resource );
|
|
|
|
|
IoFreeWorkItem (FatData.FatCloseItem);
|
|
|
|
|
ObDereferenceObject( FatDiskFileSystemDeviceObject);
|
|
|
|
|
ObDereferenceObject( FatCdromFileSystemDeviceObject);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
//
|
|
|
|
|
// Local Support routine
|
|
|
|
|
//
|
|
|
|
|
|
|
|
|
|
NTSTATUS
|
|
|
|
|
FatGetCompatibilityModeValue (
|
|
|
|
|
IN PUNICODE_STRING ValueName,
|
|
|
|
|
IN OUT PULONG Value
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
/*++
|
|
|
|
|
|
|
|
|
|
Routine Description:
|
|
|
|
|
|
|
|
|
|
Given a unicode value name this routine will go into the registry
|
|
|
|
|
location for the Chicago compatibilitymode information and get the
|
|
|
|
|
value.
|
|
|
|
|
|
|
|
|
|
Arguments:
|
|
|
|
|
|
|
|
|
|
ValueName - the unicode name for the registry value located in the registry.
|
|
|
|
|
Value - a pointer to the ULONG for the result.
|
|
|
|
|
|
|
|
|
|
Return Value:
|
|
|
|
|
|
|
|
|
|
NTSTATUS
|
|
|
|
|
|
|
|
|
|
If STATUS_SUCCESSFUL is returned, the location *Value will be
|
|
|
|
|
updated with the DWORD value from the registry. If any failing
|
|
|
|
|
status is returned, this value is untouched.
|
|
|
|
|
|
|
|
|
|
--*/
|
|
|
|
|
|
|
|
|
|
{
|
|
|
|
|
HANDLE Handle;
|
|
|
|
|
NTSTATUS Status;
|
|
|
|
|
ULONG RequestLength;
|
|
|
|
|
ULONG ResultLength;
|
|
|
|
|
UCHAR Buffer[KEY_WORK_AREA];
|
|
|
|
|
UNICODE_STRING KeyName;
|
|
|
|
|
OBJECT_ATTRIBUTES ObjectAttributes;
|
|
|
|
|
PKEY_VALUE_FULL_INFORMATION KeyValueInformation;
|
|
|
|
|
|
|
|
|
|
KeyName.Buffer = COMPATIBILITY_MODE_KEY_NAME;
|
|
|
|
|
KeyName.Length = sizeof(COMPATIBILITY_MODE_KEY_NAME) - sizeof(WCHAR);
|
|
|
|
|
KeyName.MaximumLength = sizeof(COMPATIBILITY_MODE_KEY_NAME);
|
|
|
|
|
|
|
|
|
|
InitializeObjectAttributes(&ObjectAttributes,
|
|
|
|
|
&KeyName,
|
|
|
|
|
OBJ_CASE_INSENSITIVE,
|
|
|
|
|
NULL,
|
|
|
|
|
NULL);
|
|
|
|
|
|
|
|
|
|
Status = ZwOpenKey(&Handle,
|
|
|
|
|
KEY_READ,
|
|
|
|
|
&ObjectAttributes);
|
|
|
|
|
|
|
|
|
|
if (!NT_SUCCESS(Status)) {
|
|
|
|
|
|
|
|
|
|
return Status;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
RequestLength = KEY_WORK_AREA;
|
|
|
|
|
|
|
|
|
|
KeyValueInformation = (PKEY_VALUE_FULL_INFORMATION)Buffer;
|
|
|
|
|
|
|
|
|
|
while (1) {
|
|
|
|
|
|
|
|
|
|
Status = ZwQueryValueKey(Handle,
|
|
|
|
|
ValueName,
|
|
|
|
|
KeyValueFullInformation,
|
|
|
|
|
KeyValueInformation,
|
|
|
|
|
RequestLength,
|
|
|
|
|
&ResultLength);
|
|
|
|
|
|
|
|
|
|
NT_ASSERT( Status != STATUS_BUFFER_OVERFLOW );
|
|
|
|
|
|
|
|
|
|
if (Status == STATUS_BUFFER_OVERFLOW) {
|
|
|
|
|
|
|
|
|
|
//
|
|
|
|
|
// Try to get a buffer big enough.
|
|
|
|
|
//
|
|
|
|
|
|
|
|
|
|
if (KeyValueInformation != (PKEY_VALUE_FULL_INFORMATION)Buffer) {
|
|
|
|
|
|
|
|
|
|
ExFreePool(KeyValueInformation);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
RequestLength += 256;
|
|
|
|
|
|
|
|
|
|
KeyValueInformation = (PKEY_VALUE_FULL_INFORMATION)
|
|
|
|
|
ExAllocatePoolWithTag(PagedPool,
|
|
|
|
|
RequestLength,
|
|
|
|
|
' taF');
|
|
|
|
|
|
|
|
|
|
if (!KeyValueInformation) {
|
|
|
|
|
|
|
|
|
|
ZwClose(Handle);
|
|
|
|
|
return STATUS_NO_MEMORY;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
} else {
|
|
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
ZwClose(Handle);
|
|
|
|
|
|
|
|
|
|
if (NT_SUCCESS(Status)) {
|
|
|
|
|
|
|
|
|
|
if (KeyValueInformation->DataLength != 0) {
|
|
|
|
|
|
|
|
|
|
PULONG DataPtr;
|
|
|
|
|
|
|
|
|
|
//
|
|
|
|
|
// Return contents to the caller.
|
|
|
|
|
//
|
|
|
|
|
|
|
|
|
|
DataPtr = (PULONG)
|
|
|
|
|
((PUCHAR)KeyValueInformation + KeyValueInformation->DataOffset);
|
|
|
|
|
*Value = *DataPtr;
|
|
|
|
|
|
|
|
|
|
} else {
|
|
|
|
|
|
|
|
|
|
//
|
|
|
|
|
// Treat as if no value was found
|
|
|
|
|
//
|
|
|
|
|
|
|
|
|
|
Status = STATUS_OBJECT_NAME_NOT_FOUND;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (KeyValueInformation != (PKEY_VALUE_FULL_INFORMATION)Buffer) {
|
|
|
|
|
|
|
|
|
|
ExFreePool(KeyValueInformation);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return Status;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
//
|
|
|
|
|
// Local Support routine
|
|
|
|
|
//
|
|
|
|
|
|
|
|
|
|
BOOLEAN
|
|
|
|
|
FatIsFujitsuFMR (
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
/*++
|
|
|
|
|
|
|
|
|
|
Routine Description:
|
|
|
|
|
|
2020-06-26 17:03:01 +00:00
|
|
|
|
This routine tells us if we are running on a FujitsuFMR machine.
|
2017-11-23 22:26:10 +00:00
|
|
|
|
|
|
|
|
|
Arguments:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Return Value:
|
|
|
|
|
|
2020-06-26 17:03:01 +00:00
|
|
|
|
BOOLEAN - TRUE if we are and FALSE otherwise
|
2017-11-23 22:26:10 +00:00
|
|
|
|
|
|
|
|
|
--*/
|
|
|
|
|
|
|
|
|
|
{
|
|
|
|
|
BOOLEAN Result;
|
|
|
|
|
HANDLE Handle;
|
|
|
|
|
NTSTATUS Status;
|
|
|
|
|
ULONG RequestLength;
|
|
|
|
|
ULONG ResultLength;
|
|
|
|
|
UCHAR Buffer[KEY_WORK_AREA];
|
|
|
|
|
UNICODE_STRING KeyName;
|
|
|
|
|
UNICODE_STRING ValueName;
|
|
|
|
|
OBJECT_ATTRIBUTES ObjectAttributes;
|
|
|
|
|
PKEY_VALUE_FULL_INFORMATION KeyValueInformation;
|
|
|
|
|
|
|
|
|
|
//
|
|
|
|
|
// Set default as PC/AT
|
|
|
|
|
//
|
|
|
|
|
|
|
|
|
|
KeyName.Buffer = REGISTRY_HARDWARE_DESCRIPTION_W;
|
|
|
|
|
KeyName.Length = sizeof(REGISTRY_HARDWARE_DESCRIPTION_W) - sizeof(WCHAR);
|
|
|
|
|
KeyName.MaximumLength = sizeof(REGISTRY_HARDWARE_DESCRIPTION_W);
|
|
|
|
|
|
|
|
|
|
InitializeObjectAttributes(&ObjectAttributes,
|
|
|
|
|
&KeyName,
|
|
|
|
|
OBJ_CASE_INSENSITIVE,
|
|
|
|
|
NULL,
|
|
|
|
|
NULL);
|
|
|
|
|
|
|
|
|
|
Status = ZwOpenKey(&Handle,
|
|
|
|
|
KEY_READ,
|
|
|
|
|
&ObjectAttributes);
|
|
|
|
|
|
|
|
|
|
if (!NT_SUCCESS(Status)) {
|
|
|
|
|
|
|
|
|
|
return FALSE;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
ValueName.Buffer = REGISTRY_MACHINE_IDENTIFIER_W;
|
|
|
|
|
ValueName.Length = sizeof(REGISTRY_MACHINE_IDENTIFIER_W) - sizeof(WCHAR);
|
|
|
|
|
ValueName.MaximumLength = sizeof(REGISTRY_MACHINE_IDENTIFIER_W);
|
|
|
|
|
|
|
|
|
|
RequestLength = KEY_WORK_AREA;
|
|
|
|
|
|
|
|
|
|
KeyValueInformation = (PKEY_VALUE_FULL_INFORMATION)Buffer;
|
|
|
|
|
|
|
|
|
|
while (1) {
|
|
|
|
|
|
|
|
|
|
Status = ZwQueryValueKey(Handle,
|
|
|
|
|
&ValueName,
|
|
|
|
|
KeyValueFullInformation,
|
|
|
|
|
KeyValueInformation,
|
|
|
|
|
RequestLength,
|
|
|
|
|
&ResultLength);
|
|
|
|
|
|
|
|
|
|
// NT_ASSERT( Status != STATUS_BUFFER_OVERFLOW );
|
|
|
|
|
|
|
|
|
|
if (Status == STATUS_BUFFER_OVERFLOW) {
|
|
|
|
|
|
|
|
|
|
//
|
|
|
|
|
// Try to get a buffer big enough.
|
|
|
|
|
//
|
|
|
|
|
|
|
|
|
|
if (KeyValueInformation != (PKEY_VALUE_FULL_INFORMATION)Buffer) {
|
|
|
|
|
|
|
|
|
|
ExFreePool(KeyValueInformation);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
RequestLength += 256;
|
|
|
|
|
|
|
|
|
|
KeyValueInformation = (PKEY_VALUE_FULL_INFORMATION)
|
|
|
|
|
ExAllocatePoolWithTag(PagedPool, RequestLength, ' taF');
|
|
|
|
|
|
|
|
|
|
if (!KeyValueInformation) {
|
|
|
|
|
|
|
|
|
|
ZwClose(Handle);
|
|
|
|
|
return FALSE;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
} else {
|
|
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
ZwClose(Handle);
|
|
|
|
|
|
|
|
|
|
if (NT_SUCCESS(Status) &&
|
|
|
|
|
(KeyValueInformation->DataLength >= sizeof(FUJITSU_FMR_NAME_W)) &&
|
|
|
|
|
(RtlCompareMemory((PUCHAR)KeyValueInformation + KeyValueInformation->DataOffset,
|
|
|
|
|
FUJITSU_FMR_NAME_W,
|
|
|
|
|
sizeof(FUJITSU_FMR_NAME_W) - sizeof(WCHAR)) ==
|
|
|
|
|
sizeof(FUJITSU_FMR_NAME_W) - sizeof(WCHAR))) {
|
|
|
|
|
|
|
|
|
|
Result = TRUE;
|
|
|
|
|
|
|
|
|
|
} else {
|
|
|
|
|
|
|
|
|
|
Result = FALSE;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (KeyValueInformation != (PKEY_VALUE_FULL_INFORMATION)Buffer) {
|
|
|
|
|
|
|
|
|
|
ExFreePool(KeyValueInformation);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return Result;
|
|
|
|
|
}
|
|
|
|
|
|