NTSTATUS
NTAPI
NpFsdQueryVolumeInformation(IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp)
{
NTSTATUS Status;
PAGED_CODE();
TRACE("Entered\n");
FsRtlEnterFileSystem();
NpAcquireSharedVcb();
Status = NpCommonQueryVolumeInformation(DeviceObject, Irp);
NpReleaseVcb();
FsRtlExitFileSystem();
if (Status != STATUS_PENDING)
{
Irp->IoStatus.Status = Status;
IoCompleteRequest(Irp, IO_NAMED_PIPE_INCREMENT);
}
TRACE("Leaving, Status = %lx\n", Status);
return Status;
}
_IRQL_requires_same_
BOOLEAN
NTAPI
NpFastWrite(
_In_ PFILE_OBJECT FileObject,
_In_ PLARGE_INTEGER FileOffset,
_In_ ULONG Length,
_In_ BOOLEAN Wait,
_In_ ULONG LockKey,
_In_ PVOID Buffer,
_Out_ PIO_STATUS_BLOCK IoStatus,
_In_ PDEVICE_OBJECT DeviceObject)
{
LIST_ENTRY DeferredList;
BOOLEAN Result;
PAGED_CODE();
InitializeListHead(&DeferredList);
FsRtlEnterFileSystem();
NpAcquireSharedVcb();
Result = NpCommonWrite(FileObject,
Buffer,
Length,
PsGetCurrentThread(),
IoStatus,
NULL,
&DeferredList);
if (Result)
++NpFastWriteTrue;
else
++NpFastWriteFalse;
NpReleaseVcb();
NpCompleteDeferredIrps(&DeferredList);
FsRtlExitFileSystem();
return Result;
}
NTSTATUS
NTAPI
NpFsdWrite(IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp)
{
PIO_STACK_LOCATION IoStack;
IO_STATUS_BLOCK IoStatus;
LIST_ENTRY DeferredList;
PAGED_CODE();
NpSlowWriteCalls++;
InitializeListHead(&DeferredList);
IoStack = IoGetCurrentIrpStackLocation(Irp);
FsRtlEnterFileSystem();
NpAcquireSharedVcb();
NpCommonWrite(IoStack->FileObject,
Irp->UserBuffer,
IoStack->Parameters.Write.Length,
Irp->Tail.Overlay.Thread,
&IoStatus,
Irp,
&DeferredList);
NpReleaseVcb();
NpCompleteDeferredIrps(&DeferredList);
FsRtlExitFileSystem();
if (IoStatus.Status != STATUS_PENDING)
{
Irp->IoStatus.Information = IoStatus.Information;
Irp->IoStatus.Status = IoStatus.Status;
IoCompleteRequest(Irp, IO_NAMED_PIPE_INCREMENT);
}
return IoStatus.Status;
}
NTSTATUS
NTAPI
NpFsdFlushBuffers(IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp)
{
NTSTATUS Status;
PAGED_CODE();
FsRtlEnterFileSystem();
NpAcquireSharedVcb();
Status = NpCommonFlushBuffers(DeviceObject, Irp);
NpReleaseVcb();
FsRtlExitFileSystem();
if (Status != STATUS_PENDING)
{
Irp->IoStatus.Status = Status;
IoCompleteRequest(Irp, IO_NAMED_PIPE_INCREMENT);
}
return Status;
}
NTSTATUS
NpFsdQueryInformation (
IN PNPFS_DEVICE_OBJECT NpfsDeviceObject,
IN PIRP Irp
)
/*++
Routine Description:
This routine implements the FSD part of the NtQueryInformationFile API
calls.
Arguments:
NpfsDeviceObject - Supplies the device object to use.
Irp - Supplies the Irp being processed
Return Value:
NTSTATUS - The Fsd status for the Irp
--*/
{
NTSTATUS Status;
PAGED_CODE();
DebugTrace(+1, Dbg, "NpFsdQueryInformation\n", 0);
//
// Call the common Query Information routine.
//
FsRtlEnterFileSystem();
NpAcquireSharedVcb();
try {
Status = NpCommonQueryInformation( NpfsDeviceObject, Irp );
} except(NpExceptionFilter( GetExceptionCode() )) {
//
// We had some trouble trying to perform the requested
// operation, so we'll abort the I/O request with
// the error status that we get back from the
// execption code
//
Status = NpProcessException( NpfsDeviceObject, Irp, GetExceptionCode() );
}
NpReleaseVcb();
FsRtlExitFileSystem();
//
// And return to our caller
//
DebugTrace(-1, Dbg, "NpFsdQueryInformation -> %08lx\n", Status );
return Status;
}
