Author: ion Date: Sun Jul 2 18:26:25 2006 New Revision: 22768
URL: http://svn.reactos.org/svn/reactos?rev=22768&view=rev Log: - Fix formatting of some newly added functions before starting heavy work.
Modified: trunk/reactos/ntoskrnl/io/iomgr/iofunc.c
Modified: trunk/reactos/ntoskrnl/io/iomgr/iofunc.c URL: http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/io/iomgr/iofunc.c?... ============================================================================== --- trunk/reactos/ntoskrnl/io/iomgr/iofunc.c (original) +++ trunk/reactos/ntoskrnl/io/iomgr/iofunc.c Sun Jul 2 18:26:25 2006 @@ -405,159 +405,138 @@ /* * @implemented */ -NTSTATUS STDCALL +NTSTATUS +NTAPI IoQueryVolumeInformation(IN PFILE_OBJECT FileObject, - IN FS_INFORMATION_CLASS FsInformationClass, - IN ULONG Length, - OUT PVOID FsInformation, - OUT PULONG ReturnedLength) + IN FS_INFORMATION_CLASS FsInformationClass, + IN ULONG Length, + OUT PVOID FsInformation, + OUT PULONG ReturnedLength) { - IO_STATUS_BLOCK IoStatusBlock; - PIO_STACK_LOCATION StackPtr; - PDEVICE_OBJECT DeviceObject; - PIRP Irp; - NTSTATUS Status; - - ASSERT(FsInformation != NULL); - - DPRINT("FsInformation %p\n", FsInformation); - - Status = ObReferenceObjectByPointer(FileObject, - FILE_READ_ATTRIBUTES, - IoFileObjectType, - KernelMode); - if (!NT_SUCCESS(Status)) - { - return(Status); - } - - DeviceObject = FileObject->DeviceObject; - - Irp = IoAllocateIrp(DeviceObject->StackSize, - TRUE); - if (Irp == NULL) - { - ObDereferenceObject(FileObject); - return(STATUS_INSUFFICIENT_RESOURCES); - } - - /* Trigger FileObject/Event dereferencing */ - Irp->Tail.Overlay.OriginalFileObject = FileObject; - Irp->RequestorMode = KernelMode; - Irp->AssociatedIrp.SystemBuffer = FsInformation; - KeResetEvent( &FileObject->Event ); - Irp->UserEvent = &FileObject->Event; - Irp->UserIosb = &IoStatusBlock; - Irp->Tail.Overlay.Thread = PsGetCurrentThread(); - - StackPtr = IoGetNextIrpStackLocation(Irp); - StackPtr->MajorFunction = IRP_MJ_QUERY_VOLUME_INFORMATION; - StackPtr->MinorFunction = 0; - StackPtr->Flags = 0; - StackPtr->Control = 0; - StackPtr->DeviceObject = DeviceObject; - StackPtr->FileObject = FileObject; - StackPtr->Parameters.QueryVolume.Length = Length; - StackPtr->Parameters.QueryVolume.FsInformationClass = - FsInformationClass; - - Status = IoCallDriver(DeviceObject, - Irp); - if (Status == STATUS_PENDING) - { - KeWaitForSingleObject(&FileObject->Event, - UserRequest, - KernelMode, - FALSE, - NULL); - Status = IoStatusBlock.Status; - } - DPRINT("Status %x\n", Status); - - if (ReturnedLength != NULL) - { - *ReturnedLength = IoStatusBlock.Information; - } - - return(Status); + IO_STATUS_BLOCK IoStatusBlock; + PIO_STACK_LOCATION StackPtr; + PDEVICE_OBJECT DeviceObject; + PIRP Irp; + NTSTATUS Status; + + Status = ObReferenceObjectByPointer(FileObject, + FILE_READ_ATTRIBUTES, + IoFileObjectType, + KernelMode); + if (!NT_SUCCESS(Status)) return(Status); + + DeviceObject = FileObject->DeviceObject; + + Irp = IoAllocateIrp(DeviceObject->StackSize, TRUE); + if (!Irp) + { + ObDereferenceObject(FileObject); + return(STATUS_INSUFFICIENT_RESOURCES); + } + + /* Trigger FileObject/Event dereferencing */ + Irp->Tail.Overlay.OriginalFileObject = FileObject; + Irp->RequestorMode = KernelMode; + Irp->AssociatedIrp.SystemBuffer = FsInformation; + KeResetEvent( &FileObject->Event ); + Irp->UserEvent = &FileObject->Event; + Irp->UserIosb = &IoStatusBlock; + Irp->Tail.Overlay.Thread = PsGetCurrentThread(); + + StackPtr = IoGetNextIrpStackLocation(Irp); + StackPtr->MajorFunction = IRP_MJ_QUERY_VOLUME_INFORMATION; + StackPtr->MinorFunction = 0; + StackPtr->Flags = 0; + StackPtr->Control = 0; + StackPtr->DeviceObject = DeviceObject; + StackPtr->FileObject = FileObject; + StackPtr->Parameters.QueryVolume.Length = Length; + StackPtr->Parameters.QueryVolume.FsInformationClass = + FsInformationClass; + + Status = IoCallDriver(DeviceObject, Irp); + if (Status == STATUS_PENDING) + { + KeWaitForSingleObject(&FileObject->Event, + UserRequest, + KernelMode, + FALSE, + NULL); + Status = IoStatusBlock.Status; + } + + if (ReturnedLength) *ReturnedLength = IoStatusBlock.Information; + return Status; }
/* * @unimplemented */ -NTSTATUS STDCALL +NTSTATUS +NTAPI IoSetInformation(IN PFILE_OBJECT FileObject, - IN FILE_INFORMATION_CLASS FileInformationClass, - IN ULONG Length, - IN PVOID FileInformation) + IN FILE_INFORMATION_CLASS FileInformationClass, + IN ULONG Length, + IN PVOID FileInformation) { - IO_STATUS_BLOCK IoStatusBlock; - PIRP Irp; - PDEVICE_OBJECT DeviceObject; - PIO_STACK_LOCATION StackPtr; - NTSTATUS Status; - - ASSERT(FileInformation != NULL); - - if (FileInformationClass == FileCompletionInformation) - { - return STATUS_NOT_IMPLEMENTED; - } - - - - Status = ObReferenceObjectByPointer(FileObject, - 0, /* FIXME - depends on the information class */ - IoFileObjectType, - KernelMode); - if (!NT_SUCCESS(Status)) - { - return(Status); - } - - DPRINT("FileObject 0x%p\n", FileObject); - - DeviceObject = FileObject->DeviceObject; - - Irp = IoAllocateIrp(DeviceObject->StackSize, - TRUE); - if (Irp == NULL) - { - ObDereferenceObject(FileObject); - return STATUS_INSUFFICIENT_RESOURCES; - } - - /* Trigger FileObject/Event dereferencing */ - Irp->Tail.Overlay.OriginalFileObject = FileObject; - Irp->RequestorMode = KernelMode; - Irp->AssociatedIrp.SystemBuffer = FileInformation; - Irp->UserIosb = &IoStatusBlock; - Irp->UserEvent = &FileObject->Event; - Irp->Tail.Overlay.Thread = PsGetCurrentThread(); - KeResetEvent( &FileObject->Event ); - - StackPtr = IoGetNextIrpStackLocation(Irp); - StackPtr->MajorFunction = IRP_MJ_SET_INFORMATION; - StackPtr->MinorFunction = 0; - StackPtr->Flags = 0; - StackPtr->Control = 0; - StackPtr->DeviceObject = DeviceObject; - StackPtr->FileObject = FileObject; - StackPtr->Parameters.SetFile.FileInformationClass = FileInformationClass; - StackPtr->Parameters.SetFile.Length = Length; - - Status = IoCallDriver(FileObject->DeviceObject, Irp); - if (Status==STATUS_PENDING) - { - KeWaitForSingleObject(&FileObject->Event, - Executive, - KernelMode, - FileObject->Flags & FO_ALERTABLE_IO, - NULL); - Status = IoStatusBlock.Status; - } - - return Status; + IO_STATUS_BLOCK IoStatusBlock; + PIRP Irp; + PDEVICE_OBJECT DeviceObject; + PIO_STACK_LOCATION StackPtr; + NTSTATUS Status; + + if (FileInformationClass == FileCompletionInformation) + { + return STATUS_NOT_IMPLEMENTED; + } + + Status = ObReferenceObjectByPointer(FileObject, + 0, /* FIXME - depends on the information class */ + IoFileObjectType, + KernelMode); + if (!NT_SUCCESS(Status)) return(Status); + + + DeviceObject = FileObject->DeviceObject; + + Irp = IoAllocateIrp(DeviceObject->StackSize, TRUE); + if (!Irp) + { + ObDereferenceObject(FileObject); + return STATUS_INSUFFICIENT_RESOURCES; + } + + /* Trigger FileObject/Event dereferencing */ + Irp->Tail.Overlay.OriginalFileObject = FileObject; + Irp->RequestorMode = KernelMode; + Irp->AssociatedIrp.SystemBuffer = FileInformation; + Irp->UserIosb = &IoStatusBlock; + Irp->UserEvent = &FileObject->Event; + Irp->Tail.Overlay.Thread = PsGetCurrentThread(); + KeResetEvent( &FileObject->Event ); + + StackPtr = IoGetNextIrpStackLocation(Irp); + StackPtr->MajorFunction = IRP_MJ_SET_INFORMATION; + StackPtr->MinorFunction = 0; + StackPtr->Flags = 0; + StackPtr->Control = 0; + StackPtr->DeviceObject = DeviceObject; + StackPtr->FileObject = FileObject; + StackPtr->Parameters.SetFile.FileInformationClass = FileInformationClass; + StackPtr->Parameters.SetFile.Length = Length; + + Status = IoCallDriver(FileObject->DeviceObject, Irp); + if (Status==STATUS_PENDING) + { + KeWaitForSingleObject(&FileObject->Event, + Executive, + KernelMode, + FileObject->Flags & FO_ALERTABLE_IO, + NULL); + Status = IoStatusBlock.Status; + } + + return Status; }
/* NATIVE SERVICES ***********************************************************/ @@ -1324,7 +1303,6 @@ } }
- return Status;
Cleanup: @@ -1767,7 +1745,7 @@ IN PULONG Key OPTIONAL) { UNIMPLEMENTED; - return(STATUS_NOT_IMPLEMENTED); + return STATUS_NOT_IMPLEMENTED; }
/* @@ -2281,15 +2259,15 @@ */ NTSTATUS NTAPI -NtWriteFile (IN HANDLE FileHandle, - IN HANDLE Event OPTIONAL, - IN PIO_APC_ROUTINE ApcRoutine OPTIONAL, - IN PVOID ApcContext OPTIONAL, - OUT PIO_STATUS_BLOCK IoStatusBlock, - IN PVOID Buffer, - IN ULONG Length, - IN PLARGE_INTEGER ByteOffset OPTIONAL, - IN PULONG Key OPTIONAL) +NtWriteFile(IN HANDLE FileHandle, + IN HANDLE Event OPTIONAL, + IN PIO_APC_ROUTINE ApcRoutine OPTIONAL, + IN PVOID ApcContext OPTIONAL, + OUT PIO_STATUS_BLOCK IoStatusBlock, + IN PVOID Buffer, + IN ULONG Length, + IN PLARGE_INTEGER ByteOffset OPTIONAL, + IN PULONG Key OPTIONAL) { OBJECT_HANDLE_INFORMATION ObjectHandleInfo; NTSTATUS Status = STATUS_SUCCESS; @@ -2322,7 +2300,7 @@ DesiredAccess |= FILE_APPEND_DATA;
/* Validate User-Mode Buffers */ - if(PreviousMode != KernelMode) + if (PreviousMode != KernelMode) { /* check if the handle has either FILE_WRITE_DATA or FILE_APPEND_DATA was granted. */ @@ -2494,74 +2472,44 @@ OUT PIO_STATUS_BLOCK UserIoStatusBlock, IN FILE_SEGMENT_ELEMENT BufferDescription [], IN ULONG BufferLength, - IN PLARGE_INTEGER ByteOffset, + IN PLARGE_INTEGER ByteOffset, IN PULONG Key OPTIONAL) { UNIMPLEMENTED; - return(STATUS_NOT_IMPLEMENTED); + return STATUS_NOT_IMPLEMENTED; }
/* - * FUNCTION: Queries the volume information - * ARGUMENTS: - * FileHandle = Handle to a file object on the target volume - * ReturnLength = DataWritten - * FsInformation = Caller should supply storage for the information - * structure. - * Length = Size of the information structure - * FsInformationClass = Index to a information structure - * - * FileFsVolumeInformation FILE_FS_VOLUME_INFORMATION - * FileFsLabelInformation FILE_FS_LABEL_INFORMATION - * FileFsSizeInformation FILE_FS_SIZE_INFORMATION - * FileFsDeviceInformation FILE_FS_DEVICE_INFORMATION - * FileFsAttributeInformation FILE_FS_ATTRIBUTE_INFORMATION - * FileFsControlInformation - * FileFsQuotaQueryInformation -- - * FileFsQuotaSetInformation -- - * FileFsMaximumInformation - * - * RETURNS: Status - * * @implemented */ - -NTSTATUS STDCALL +NTSTATUS +NTAPI NtQueryVolumeInformationFile(IN HANDLE FileHandle, - OUT PIO_STATUS_BLOCK IoStatusBlock, - OUT PVOID FsInformation, - IN ULONG Length, - IN FS_INFORMATION_CLASS FsInformationClass) + OUT PIO_STATUS_BLOCK IoStatusBlock, + OUT PVOID FsInformation, + IN ULONG Length, + IN FS_INFORMATION_CLASS FsInformationClass) { - PFILE_OBJECT FileObject; - PDEVICE_OBJECT DeviceObject; - PIRP Irp; - NTSTATUS Status = STATUS_SUCCESS; - PIO_STACK_LOCATION StackPtr; - PVOID SystemBuffer; - KPROCESSOR_MODE PreviousMode; - - DPRINT("FsInformation %p\n", FsInformation); - - PreviousMode = ExGetPreviousMode(); - - if (PreviousMode != KernelMode) - { + PFILE_OBJECT FileObject; + PDEVICE_OBJECT DeviceObject; + PIRP Irp; + NTSTATUS Status = STATUS_SUCCESS; + PIO_STACK_LOCATION StackPtr; + PVOID SystemBuffer; + KPROCESSOR_MODE PreviousMode = ExGetPreviousMode(); + + if (PreviousMode != KernelMode) + { _SEH_TRY { - if (IoStatusBlock != NULL) + if (IoStatusBlock) { ProbeForWrite(IoStatusBlock, sizeof(IO_STATUS_BLOCK), sizeof(ULONG)); }
- if (Length != 0) - { - ProbeForWrite(FsInformation, - Length, - 1); - } + if (Length) ProbeForWrite(FsInformation, Length, 1); } _SEH_HANDLE { @@ -2573,256 +2521,215 @@ { return Status; } - } - else - { - ASSERT(IoStatusBlock != NULL); - ASSERT(FsInformation != NULL); - } - - Status = ObReferenceObjectByHandle(FileHandle, - 0, /* FIXME - depends on the information class! */ - IoFileObjectType, - PreviousMode, - (PVOID*)&FileObject, - NULL); - if (!NT_SUCCESS(Status)) - { - return(Status); + } + + Status = ObReferenceObjectByHandle(FileHandle, + 0, /* FIXME - depends on the information class! */ + IoFileObjectType, + PreviousMode, + (PVOID*)&FileObject, + NULL); + if (!NT_SUCCESS(Status)) return Status; + + DeviceObject = FileObject->DeviceObject; + + Irp = IoAllocateIrp(DeviceObject->StackSize, TRUE); + if (!Irp) + { + ObDereferenceObject(FileObject); + return STATUS_INSUFFICIENT_RESOURCES; + } + + SystemBuffer = ExAllocatePoolWithTag(NonPagedPool, Length, TAG_SYSB); + if (!SystemBuffer) + { + IoFreeIrp(Irp); + ObDereferenceObject(FileObject); + return STATUS_INSUFFICIENT_RESOURCES; + } + + /* Trigger FileObject/Event dereferencing */ + Irp->Tail.Overlay.OriginalFileObject = FileObject; + + Irp->RequestorMode = PreviousMode; + Irp->AssociatedIrp.SystemBuffer = SystemBuffer; + KeResetEvent( &FileObject->Event ); + Irp->UserEvent = &FileObject->Event; + Irp->UserIosb = IoStatusBlock; + Irp->Tail.Overlay.Thread = PsGetCurrentThread(); + + StackPtr = IoGetNextIrpStackLocation(Irp); + StackPtr->MajorFunction = IRP_MJ_QUERY_VOLUME_INFORMATION; + StackPtr->MinorFunction = 0; + StackPtr->Flags = 0; + StackPtr->Control = 0; + StackPtr->DeviceObject = DeviceObject; + StackPtr->FileObject = FileObject; + StackPtr->Parameters.QueryVolume.Length = Length; + StackPtr->Parameters.QueryVolume.FsInformationClass = + FsInformationClass; + + Status = IoCallDriver(DeviceObject, Irp); + if (Status == STATUS_PENDING) + { + KeWaitForSingleObject(&FileObject->Event, + UserRequest, + PreviousMode, + FALSE, + NULL); + Status = IoStatusBlock->Status; }
- DeviceObject = FileObject->DeviceObject; - - Irp = IoAllocateIrp(DeviceObject->StackSize, - TRUE); - if (Irp == NULL) - { - ObDereferenceObject(FileObject); - return(STATUS_INSUFFICIENT_RESOURCES); - } - - SystemBuffer = ExAllocatePoolWithTag(NonPagedPool, - Length, - TAG_SYSB); - if (SystemBuffer == NULL) - { - IoFreeIrp(Irp); - ObDereferenceObject(FileObject); - return(STATUS_INSUFFICIENT_RESOURCES); - } - - /* Trigger FileObject/Event dereferencing */ - Irp->Tail.Overlay.OriginalFileObject = FileObject; - - Irp->RequestorMode = PreviousMode; - Irp->AssociatedIrp.SystemBuffer = SystemBuffer; - KeResetEvent( &FileObject->Event ); - Irp->UserEvent = &FileObject->Event; - Irp->UserIosb = IoStatusBlock; - Irp->Tail.Overlay.Thread = PsGetCurrentThread(); - - StackPtr = IoGetNextIrpStackLocation(Irp); - StackPtr->MajorFunction = IRP_MJ_QUERY_VOLUME_INFORMATION; - StackPtr->MinorFunction = 0; - StackPtr->Flags = 0; - StackPtr->Control = 0; - StackPtr->DeviceObject = DeviceObject; - StackPtr->FileObject = FileObject; - StackPtr->Parameters.QueryVolume.Length = Length; - StackPtr->Parameters.QueryVolume.FsInformationClass = - FsInformationClass; - - Status = IoCallDriver(DeviceObject, - Irp); - if (Status == STATUS_PENDING) - { - KeWaitForSingleObject(&FileObject->Event, - UserRequest, - PreviousMode, - FALSE, - NULL); - Status = IoStatusBlock->Status; - } - DPRINT("Status %x\n", Status); - - if (NT_SUCCESS(Status)) - { + if (NT_SUCCESS(Status)) + { _SEH_TRY { - DPRINT("Information %lu\n", IoStatusBlock->Information); RtlCopyMemory(FsInformation, SystemBuffer, IoStatusBlock->Information); - } - _SEH_HANDLE - { + } + _SEH_HANDLE + { Status = _SEH_GetExceptionCode(); - } + } _SEH_END; }
- ExFreePool(SystemBuffer); - - return(Status); + ExFreePool(SystemBuffer); + return Status; }
/* * @implemented */ -NTSTATUS STDCALL +NTSTATUS +NTAPI NtSetVolumeInformationFile(IN HANDLE FileHandle, - OUT PIO_STATUS_BLOCK IoStatusBlock, - IN PVOID FsInformation, - IN ULONG Length, - IN FS_INFORMATION_CLASS FsInformationClass) + OUT PIO_STATUS_BLOCK IoStatusBlock, + IN PVOID FsInformation, + IN ULONG Length, + IN FS_INFORMATION_CLASS FsInformationClass) { - PFILE_OBJECT FileObject; - PDEVICE_OBJECT DeviceObject; - PIRP Irp; - NTSTATUS Status; - PIO_STACK_LOCATION StackPtr; - PVOID SystemBuffer; - KPROCESSOR_MODE PreviousMode; - - PreviousMode = ExGetPreviousMode(); - - if (PreviousMode != KernelMode) - { - Status = STATUS_SUCCESS; - _SEH_TRY - { - if (IoStatusBlock != NULL) - { - ProbeForWrite(IoStatusBlock, - sizeof(IO_STATUS_BLOCK), - sizeof(ULONG)); - } - - if (Length != 0) - { - ProbeForRead(FsInformation, - Length, - 1); - } - } - _SEH_HANDLE - { - Status = _SEH_GetExceptionCode(); - } - _SEH_END; - - if (!NT_SUCCESS(Status)) - { - return Status; - } - } - else - { - ASSERT(IoStatusBlock != NULL); - ASSERT(FsInformation != NULL); - } - - Status = ObReferenceObjectByHandle(FileHandle, - FILE_WRITE_ATTRIBUTES, - NULL, - PreviousMode, - (PVOID*)&FileObject, - NULL); - if (Status != STATUS_SUCCESS) - { - return(Status); - } - - DeviceObject = FileObject->DeviceObject; - - Irp = IoAllocateIrp(DeviceObject->StackSize,TRUE); - if (Irp == NULL) - { - ObDereferenceObject(FileObject); - return(STATUS_INSUFFICIENT_RESOURCES); - } - - SystemBuffer = ExAllocatePoolWithTag(NonPagedPool, - Length, - TAG_SYSB); - if (SystemBuffer == NULL) - { + PFILE_OBJECT FileObject; + PDEVICE_OBJECT DeviceObject; + PIRP Irp; + NTSTATUS Status = STATUS_SUCCESS; + PIO_STACK_LOCATION StackPtr; + PVOID SystemBuffer; + KPROCESSOR_MODE PreviousMode = ExGetPreviousMode(); + + if (PreviousMode != KernelMode) + { + _SEH_TRY + { + if (IoStatusBlock) + { + ProbeForWrite(IoStatusBlock, + sizeof(IO_STATUS_BLOCK), + sizeof(ULONG)); + } + + if (Length) ProbeForRead(FsInformation, Length, 1); + } + _SEH_HANDLE + { + Status = _SEH_GetExceptionCode(); + } + _SEH_END; + + if (!NT_SUCCESS(Status)) return Status; + } + + Status = ObReferenceObjectByHandle(FileHandle, + FILE_WRITE_ATTRIBUTES, + NULL, + PreviousMode, + (PVOID*)&FileObject, + NULL); + if (Status != STATUS_SUCCESS) return Status; + + DeviceObject = FileObject->DeviceObject; + + Irp = IoAllocateIrp(DeviceObject->StackSize,TRUE); + if (!Irp) + { + ObDereferenceObject(FileObject); + return STATUS_INSUFFICIENT_RESOURCES; + } + + SystemBuffer = ExAllocatePoolWithTag(NonPagedPool, Length, TAG_SYSB); + if (!SystemBuffer) + { Status = STATUS_INSUFFICIENT_RESOURCES; goto failfreeirp; - } - - if (PreviousMode != KernelMode) - { - _SEH_TRY - { - /* no need to probe again */ - RtlCopyMemory(SystemBuffer, - FsInformation, - Length); - } - _SEH_HANDLE - { - Status = _SEH_GetExceptionCode(); - } - _SEH_END; - - if (!NT_SUCCESS(Status)) - { - ExFreePoolWithTag(SystemBuffer, - TAG_SYSB); + } + + if (PreviousMode != KernelMode) + { + _SEH_TRY + { + /* no need to probe again */ + RtlCopyMemory(SystemBuffer, FsInformation, Length); + } + _SEH_HANDLE + { + Status = _SEH_GetExceptionCode(); + } + _SEH_END; + + if (!NT_SUCCESS(Status)) + { + ExFreePoolWithTag(SystemBuffer, TAG_SYSB); failfreeirp: - IoFreeIrp(Irp); - ObDereferenceObject(FileObject); - return Status; - } - } - else - { - RtlCopyMemory(SystemBuffer, - FsInformation, - Length); - } - - /* Trigger FileObject/Event dereferencing */ - Irp->Tail.Overlay.OriginalFileObject = FileObject; - Irp->RequestorMode = PreviousMode; - Irp->AssociatedIrp.SystemBuffer = SystemBuffer; - KeResetEvent( &FileObject->Event ); - Irp->UserEvent = &FileObject->Event; - Irp->UserIosb = IoStatusBlock; - Irp->Tail.Overlay.Thread = PsGetCurrentThread(); - - StackPtr = IoGetNextIrpStackLocation(Irp); - StackPtr->MajorFunction = IRP_MJ_SET_VOLUME_INFORMATION; - StackPtr->MinorFunction = 0; - StackPtr->Flags = 0; - StackPtr->Control = 0; - StackPtr->DeviceObject = DeviceObject; - StackPtr->FileObject = FileObject; - StackPtr->Parameters.SetVolume.Length = Length; - StackPtr->Parameters.SetVolume.FsInformationClass = - FsInformationClass; - - Status = IoCallDriver(DeviceObject,Irp); - if (Status == STATUS_PENDING) - { - KeWaitForSingleObject(&FileObject->Event, - UserRequest, - PreviousMode, - FALSE, - NULL); + IoFreeIrp(Irp); + ObDereferenceObject(FileObject); + return Status; + } + } + else + { + RtlCopyMemory(SystemBuffer, FsInformation, Length); + } + + /* Trigger FileObject/Event dereferencing */ + Irp->Tail.Overlay.OriginalFileObject = FileObject; + Irp->RequestorMode = PreviousMode; + Irp->AssociatedIrp.SystemBuffer = SystemBuffer; + KeResetEvent( &FileObject->Event ); + Irp->UserEvent = &FileObject->Event; + Irp->UserIosb = IoStatusBlock; + Irp->Tail.Overlay.Thread = PsGetCurrentThread(); + + StackPtr = IoGetNextIrpStackLocation(Irp); + StackPtr->MajorFunction = IRP_MJ_SET_VOLUME_INFORMATION; + StackPtr->MinorFunction = 0; + StackPtr->Flags = 0; + StackPtr->Control = 0; + StackPtr->DeviceObject = DeviceObject; + StackPtr->FileObject = FileObject; + StackPtr->Parameters.SetVolume.Length = Length; + StackPtr->Parameters.SetVolume.FsInformationClass = + FsInformationClass; + + Status = IoCallDriver(DeviceObject,Irp); + if (Status == STATUS_PENDING) + { + KeWaitForSingleObject(&FileObject->Event, + UserRequest, + PreviousMode, + FALSE, + NULL); _SEH_TRY { - Status = IoStatusBlock->Status; + Status = IoStatusBlock->Status; } _SEH_HANDLE { Status = _SEH_GetExceptionCode(); } _SEH_END; - } - - ExFreePool(SystemBuffer); - - return(Status); + } + + ExFreePool(SystemBuffer); + return Status; }
-
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