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NtQueryInformationFile/NtSetInformationFile:
- Check for information class specific access rights. - Clean-up some indentation mess. svn path=/trunk/; revision=14893
This commit is contained in:
Eric Kohl
parent
be9f61a8b9
commit
8f40adc5eb
1 changed files with 274 additions and 204 deletions
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@ -2150,99 +2150,132 @@ NtQueryInformationFile(HANDLE FileHandle,
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ULONG Length,
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FILE_INFORMATION_CLASS FileInformationClass)
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{
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PFILE_OBJECT FileObject;
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NTSTATUS Status;
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PIRP Irp;
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PDEVICE_OBJECT DeviceObject;
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PIO_STACK_LOCATION StackPtr;
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PVOID SystemBuffer;
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KPROCESSOR_MODE PreviousMode;
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ASSERT(IoStatusBlock != NULL);
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ASSERT(FileInformation != NULL);
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DPRINT("NtQueryInformationFile(Handle %x StatBlk %x FileInfo %x Length %d "
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"Class %d)\n", FileHandle, IoStatusBlock, FileInformation,
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Length, FileInformationClass);
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OBJECT_HANDLE_INFORMATION HandleInformation;
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PFILE_OBJECT FileObject;
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NTSTATUS Status;
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PIRP Irp;
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PDEVICE_OBJECT DeviceObject;
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PIO_STACK_LOCATION StackPtr;
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PVOID SystemBuffer;
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KPROCESSOR_MODE PreviousMode;
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BOOLEAN Failed = FALSE;
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PreviousMode = ExGetPreviousMode();
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ASSERT(IoStatusBlock != NULL);
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ASSERT(FileInformation != NULL);
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Status = ObReferenceObjectByHandle(FileHandle,
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0, /* FIXME - access depends on the information class! */
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IoFileObjectType,
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PreviousMode,
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(PVOID *)&FileObject,
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NULL);
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if (!NT_SUCCESS(Status))
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{
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return(Status);
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}
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DPRINT("FileObject %x\n", FileObject);
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DeviceObject = FileObject->DeviceObject;
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Irp = IoAllocateIrp(DeviceObject->StackSize,
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TRUE);
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if (Irp == NULL)
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{
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ObDereferenceObject(FileObject);
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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SystemBuffer = ExAllocatePoolWithTag(NonPagedPool,
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Length,
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TAG_SYSB);
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if (SystemBuffer == NULL)
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{
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IoFreeIrp(Irp);
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ObDereferenceObject(FileObject);
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return(STATUS_INSUFFICIENT_RESOURCES);
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}
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/* Trigger FileObject/Event dereferencing */
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Irp->Tail.Overlay.OriginalFileObject = FileObject;
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Irp->RequestorMode = PreviousMode;
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Irp->AssociatedIrp.SystemBuffer = SystemBuffer;
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Irp->UserIosb = IoStatusBlock;
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Irp->UserEvent = &FileObject->Event;
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Irp->Tail.Overlay.Thread = PsGetCurrentThread();
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KeResetEvent( &FileObject->Event );
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StackPtr = IoGetNextIrpStackLocation(Irp);
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StackPtr->MajorFunction = IRP_MJ_QUERY_INFORMATION;
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StackPtr->MinorFunction = 0;
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StackPtr->Flags = 0;
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StackPtr->Control = 0;
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StackPtr->DeviceObject = DeviceObject;
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StackPtr->FileObject = FileObject;
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StackPtr->Parameters.QueryFile.FileInformationClass =
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FileInformationClass;
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StackPtr->Parameters.QueryFile.Length = Length;
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Status = IoCallDriver(FileObject->DeviceObject,
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Irp);
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if (Status == STATUS_PENDING && (FileObject->Flags & FO_SYNCHRONOUS_IO))
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{
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KeWaitForSingleObject(&FileObject->Event,
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Executive,
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PreviousMode,
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FileObject->Flags & FO_ALERTABLE_IO,
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NULL);
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Status = IoStatusBlock->Status;
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}
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DPRINT("NtQueryInformationFile(Handle %x StatBlk %x FileInfo %x Length %d "
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"Class %d)\n", FileHandle, IoStatusBlock, FileInformation,
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Length, FileInformationClass);
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PreviousMode = ExGetPreviousMode();
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Status = ObReferenceObjectByHandle(FileHandle,
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0,
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IoFileObjectType,
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PreviousMode,
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(PVOID *)&FileObject,
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&HandleInformation);
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if (!NT_SUCCESS(Status))
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{
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return Status;
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}
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/* Check information class specific access rights */
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switch (FileInformationClass)
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{
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case FileBasicInformation:
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if (!(HandleInformation.GrantedAccess & FILE_READ_ATTRIBUTES))
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Failed = TRUE;
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break;
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case FilePositionInformation:
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if (!(HandleInformation.GrantedAccess & (FILE_READ_DATA | FILE_WRITE_DATA)) ||
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!(FileObject->Flags & FO_SYNCHRONOUS_IO))
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Failed = TRUE;
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break;
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case FileAlignmentInformation:
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if (!(FileObject->Flags & FO_NO_INTERMEDIATE_BUFFERING))
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Failed = TRUE;
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break;
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default:
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break;
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}
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if (Failed)
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{
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DPRINT1("NtQueryInformationFile() returns STATUS_ACCESS_DENIED!\n");
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ObDereferenceObject(FileObject);
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return STATUS_ACCESS_DENIED;
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}
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DPRINT("FileObject %x\n", FileObject);
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DeviceObject = FileObject->DeviceObject;
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Irp = IoAllocateIrp(DeviceObject->StackSize,
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TRUE);
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if (Irp == NULL)
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{
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ObDereferenceObject(FileObject);
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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SystemBuffer = ExAllocatePoolWithTag(NonPagedPool,
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Length,
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TAG_SYSB);
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if (SystemBuffer == NULL)
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{
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IoFreeIrp(Irp);
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ObDereferenceObject(FileObject);
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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/* Trigger FileObject/Event dereferencing */
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Irp->Tail.Overlay.OriginalFileObject = FileObject;
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Irp->RequestorMode = PreviousMode;
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Irp->AssociatedIrp.SystemBuffer = SystemBuffer;
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Irp->UserIosb = IoStatusBlock;
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Irp->UserEvent = &FileObject->Event;
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Irp->Tail.Overlay.Thread = PsGetCurrentThread();
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KeResetEvent(&FileObject->Event);
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StackPtr = IoGetNextIrpStackLocation(Irp);
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StackPtr->MajorFunction = IRP_MJ_QUERY_INFORMATION;
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StackPtr->MinorFunction = 0;
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StackPtr->Flags = 0;
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StackPtr->Control = 0;
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StackPtr->DeviceObject = DeviceObject;
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StackPtr->FileObject = FileObject;
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StackPtr->Parameters.QueryFile.FileInformationClass =
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FileInformationClass;
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StackPtr->Parameters.QueryFile.Length = Length;
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Status = IoCallDriver(FileObject->DeviceObject,
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Irp);
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if (Status == STATUS_PENDING && (FileObject->Flags & FO_SYNCHRONOUS_IO))
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{
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KeWaitForSingleObject(&FileObject->Event,
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Executive,
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PreviousMode,
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FileObject->Flags & FO_ALERTABLE_IO,
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NULL);
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Status = IoStatusBlock->Status;
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}
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if (NT_SUCCESS(Status))
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{
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DPRINT("Information %lu\n", IoStatusBlock->Information);
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MmSafeCopyToUser(FileInformation,
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SystemBuffer,
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IoStatusBlock->Information);
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}
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{
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DPRINT("Information %lu\n", IoStatusBlock->Information);
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MmSafeCopyToUser(FileInformation,
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SystemBuffer,
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IoStatusBlock->Information);
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}
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ExFreePool(SystemBuffer);
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ExFreePool(SystemBuffer);
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return Status;
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return Status;
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}
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/*
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@ -2465,134 +2498,171 @@ NtSetInformationFile(HANDLE FileHandle,
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ULONG Length,
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FILE_INFORMATION_CLASS FileInformationClass)
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{
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PIO_STACK_LOCATION StackPtr;
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PFILE_OBJECT FileObject;
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PDEVICE_OBJECT DeviceObject;
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PIRP Irp;
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NTSTATUS Status;
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PVOID SystemBuffer;
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KPROCESSOR_MODE PreviousMode;
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ASSERT(IoStatusBlock != NULL);
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ASSERT(FileInformation != NULL);
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DPRINT("NtSetInformationFile(Handle %x StatBlk %x FileInfo %x Length %d "
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"Class %d)\n", FileHandle, IoStatusBlock, FileInformation,
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Length, FileInformationClass);
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OBJECT_HANDLE_INFORMATION HandleInformation;
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PIO_STACK_LOCATION StackPtr;
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PFILE_OBJECT FileObject;
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PDEVICE_OBJECT DeviceObject;
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PIRP Irp;
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NTSTATUS Status;
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PVOID SystemBuffer;
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KPROCESSOR_MODE PreviousMode;
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BOOLEAN Failed = FALSE;
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PreviousMode = ExGetPreviousMode();
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ASSERT(IoStatusBlock != NULL);
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ASSERT(FileInformation != NULL);
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/* Get the file object from the file handle */
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Status = ObReferenceObjectByHandle(FileHandle,
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0, /* FIXME - depends on the information class */
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IoFileObjectType,
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PreviousMode,
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(PVOID *)&FileObject,
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NULL);
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if (!NT_SUCCESS(Status))
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{
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return Status;
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}
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DPRINT("FileObject %x\n", FileObject);
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DPRINT("NtSetInformationFile(Handle %x StatBlk %x FileInfo %x Length %d "
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"Class %d)\n", FileHandle, IoStatusBlock, FileInformation,
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Length, FileInformationClass);
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/* io completion port? */
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if (FileInformationClass == FileCompletionInformation)
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{
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PKQUEUE Queue;
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PreviousMode = ExGetPreviousMode();
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if (Length < sizeof(FILE_COMPLETION_INFORMATION))
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/* Get the file object from the file handle */
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Status = ObReferenceObjectByHandle(FileHandle,
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0,
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IoFileObjectType,
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PreviousMode,
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(PVOID *)&FileObject,
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&HandleInformation);
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if (!NT_SUCCESS(Status))
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{
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return Status;
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}
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/* Check information class specific access rights */
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switch (FileInformationClass)
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{
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case FileBasicInformation:
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if (!(HandleInformation.GrantedAccess & FILE_WRITE_ATTRIBUTES))
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Failed = TRUE;
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break;
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case FileDispositionInformation:
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if (!(HandleInformation.GrantedAccess & DELETE))
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Failed = TRUE;
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break;
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case FilePositionInformation:
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if (!(HandleInformation.GrantedAccess & (FILE_READ_DATA | FILE_WRITE_DATA)) ||
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!(FileObject->Flags & FO_SYNCHRONOUS_IO))
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Failed = TRUE;
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break;
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case FileEndOfFileInformation:
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if (!(HandleInformation.GrantedAccess & FILE_WRITE_DATA))
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Failed = TRUE;
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break;
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default:
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break;
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}
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if (Failed)
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{
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DPRINT1("NtSetInformationFile() returns STATUS_ACCESS_DENIED!\n");
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ObDereferenceObject(FileObject);
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return STATUS_ACCESS_DENIED;
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}
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DPRINT("FileObject %x\n", FileObject);
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/* io completion port? */
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if (FileInformationClass == FileCompletionInformation)
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{
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PKQUEUE Queue;
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if (Length < sizeof(FILE_COMPLETION_INFORMATION))
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{
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Status = STATUS_INFO_LENGTH_MISMATCH;
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}
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else
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{
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Status = ObReferenceObjectByHandle(((PFILE_COMPLETION_INFORMATION)FileInformation)->IoCompletionHandle,
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IO_COMPLETION_MODIFY_STATE,//???
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ExIoCompletionType,
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PreviousMode,
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(PVOID*)&Queue,
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NULL);
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if (NT_SUCCESS(Status))
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{
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Status = STATUS_INFO_LENGTH_MISMATCH;
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/* FIXME: maybe use lookaside list */
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FileObject->CompletionContext = ExAllocatePool(NonPagedPool, sizeof(IO_COMPLETION_CONTEXT));
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FileObject->CompletionContext->Key = ((PFILE_COMPLETION_INFORMATION)FileInformation)->CompletionKey;
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FileObject->CompletionContext->Port = Queue;
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ObDereferenceObject(Queue);
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}
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else
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{
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Status = ObReferenceObjectByHandle(((PFILE_COMPLETION_INFORMATION)FileInformation)->IoCompletionHandle,
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IO_COMPLETION_MODIFY_STATE,//???
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ExIoCompletionType,
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PreviousMode,
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(PVOID*)&Queue,
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NULL);
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if (NT_SUCCESS(Status))
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{
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/* FIXME: maybe use lookaside list */
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FileObject->CompletionContext = ExAllocatePool(NonPagedPool, sizeof(IO_COMPLETION_CONTEXT));
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FileObject->CompletionContext->Key = ((PFILE_COMPLETION_INFORMATION)FileInformation)->CompletionKey;
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FileObject->CompletionContext->Port = Queue;
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}
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ObDereferenceObject(Queue);
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}
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}
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ObDereferenceObject(FileObject);
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return Status;
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}
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ObDereferenceObject(FileObject);
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return Status;
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}
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DeviceObject = FileObject->DeviceObject;
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DeviceObject = FileObject->DeviceObject;
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Irp = IoAllocateIrp(DeviceObject->StackSize,
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TRUE);
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if (Irp == NULL)
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{
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ObDereferenceObject(FileObject);
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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SystemBuffer = ExAllocatePoolWithTag(NonPagedPool,
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Length,
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TAG_SYSB);
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if (SystemBuffer == NULL)
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{
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IoFreeIrp(Irp);
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ObDereferenceObject(FileObject);
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return(STATUS_INSUFFICIENT_RESOURCES);
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}
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MmSafeCopyFromUser(SystemBuffer,
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FileInformation,
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Length);
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/* Trigger FileObject/Event dereferencing */
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Irp->Tail.Overlay.OriginalFileObject = FileObject;
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Irp->RequestorMode = PreviousMode;
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Irp->AssociatedIrp.SystemBuffer = SystemBuffer;
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Irp->UserIosb = IoStatusBlock;
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Irp->UserEvent = &FileObject->Event;
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KeResetEvent( &FileObject->Event );
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Irp->Tail.Overlay.Thread = PsGetCurrentThread();
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StackPtr = IoGetNextIrpStackLocation(Irp);
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StackPtr->MajorFunction = IRP_MJ_SET_INFORMATION;
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StackPtr->MinorFunction = 0;
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StackPtr->Flags = 0;
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StackPtr->Control = 0;
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StackPtr->DeviceObject = DeviceObject;
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StackPtr->FileObject = FileObject;
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StackPtr->Parameters.SetFile.FileInformationClass =
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FileInformationClass;
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StackPtr->Parameters.SetFile.Length = Length;
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/*
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* Pass the IRP to the FSD (and wait for
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* it if required)
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*/
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DPRINT("FileObject->DeviceObject %x\n", FileObject->DeviceObject);
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Status = IoCallDriver(FileObject->DeviceObject,
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Irp);
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if (Status == STATUS_PENDING && (FileObject->Flags & FO_SYNCHRONOUS_IO))
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{
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KeWaitForSingleObject(&FileObject->Event,
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Executive,
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PreviousMode,
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FileObject->Flags & FO_ALERTABLE_IO,
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NULL);
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Status = IoStatusBlock->Status;
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}
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Irp = IoAllocateIrp(DeviceObject->StackSize,
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TRUE);
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if (Irp == NULL)
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{
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ObDereferenceObject(FileObject);
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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ExFreePool(SystemBuffer);
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SystemBuffer = ExAllocatePoolWithTag(NonPagedPool,
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Length,
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TAG_SYSB);
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if (SystemBuffer == NULL)
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{
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IoFreeIrp(Irp);
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ObDereferenceObject(FileObject);
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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return Status;
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MmSafeCopyFromUser(SystemBuffer,
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FileInformation,
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Length);
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/* Trigger FileObject/Event dereferencing */
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Irp->Tail.Overlay.OriginalFileObject = FileObject;
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Irp->RequestorMode = PreviousMode;
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Irp->AssociatedIrp.SystemBuffer = SystemBuffer;
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Irp->UserIosb = IoStatusBlock;
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Irp->UserEvent = &FileObject->Event;
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KeResetEvent(&FileObject->Event);
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Irp->Tail.Overlay.Thread = PsGetCurrentThread();
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StackPtr = IoGetNextIrpStackLocation(Irp);
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StackPtr->MajorFunction = IRP_MJ_SET_INFORMATION;
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StackPtr->MinorFunction = 0;
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StackPtr->Flags = 0;
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StackPtr->Control = 0;
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StackPtr->DeviceObject = DeviceObject;
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StackPtr->FileObject = FileObject;
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StackPtr->Parameters.SetFile.FileInformationClass =
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FileInformationClass;
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StackPtr->Parameters.SetFile.Length = Length;
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/*
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* Pass the IRP to the FSD (and wait for
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* it if required)
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*/
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DPRINT("FileObject->DeviceObject %x\n", FileObject->DeviceObject);
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Status = IoCallDriver(FileObject->DeviceObject,
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Irp);
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if (Status == STATUS_PENDING && (FileObject->Flags & FO_SYNCHRONOUS_IO))
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{
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KeWaitForSingleObject(&FileObject->Event,
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Executive,
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PreviousMode,
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FileObject->Flags & FO_ALERTABLE_IO,
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NULL);
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Status = IoStatusBlock->Status;
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}
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ExFreePool(SystemBuffer);
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return Status;
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}
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/*
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