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187 lines
5.7 KiB
187 lines
5.7 KiB
/*--------------------------------------------------------------------------
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*
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* Copyright (C) Cyclades Corporation, 1996-2001.
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* All rights reserved.
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*
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* Cyclom-Y Port Driver
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*
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* This file: cyyqset.c
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*
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* Description: This module contains the code related to query/set
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* file operations in the Cyclom-Y Port driver.
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*
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* Notes: This code supports Windows 2000 and Windows XP,
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* x86 and IA64 processors.
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*
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* Complies with Cyclades SW Coding Standard rev 1.3.
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*
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*--------------------------------------------------------------------------
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*/
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/*-------------------------------------------------------------------------
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*
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* Change History
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*
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*--------------------------------------------------------------------------
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*
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*
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*--------------------------------------------------------------------------
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*/
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#include "precomp.h"
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text(PAGESRP0,CyyQueryInformationFile)
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#pragma alloc_text(PAGESRP0,CyySetInformationFile)
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#endif
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NTSTATUS
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CyyQueryInformationFile(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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)
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/*--------------------------------------------------------------------------
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CyyQueryInformationFile()
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Routine Description: This routine is used to query the end of file
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information on the opened serial port. Any other file information
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request is retured with an invalid parameter.
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This routine always returns an end of file of 0.
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Arguments:
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DeviceObject - Pointer to the device object for this device
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Irp - Pointer to the IRP for the current request
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Return Value: The function value is the final status of the call
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--------------------------------------------------------------------------*/
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{
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NTSTATUS Status;
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PIO_STACK_LOCATION IrpSp; // current stack location
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NTSTATUS status;
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UNREFERENCED_PARAMETER(DeviceObject);
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PAGED_CODE();
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if ((status = CyyIRPPrologue(Irp,
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(PCYY_DEVICE_EXTENSION)DeviceObject->
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DeviceExtension)) != STATUS_SUCCESS) {
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if (status != STATUS_PENDING) {
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CyyCompleteRequest((PCYY_DEVICE_EXTENSION)DeviceObject->
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DeviceExtension, Irp, IO_NO_INCREMENT);
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}
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return status;
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}
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CyyDbgPrintEx(CYYIRPPATH, "Dispatch entry for: %x\n", Irp);
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if (CyyCompleteIfError(DeviceObject, Irp) != STATUS_SUCCESS) {
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return STATUS_CANCELLED;
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}
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IrpSp = IoGetCurrentIrpStackLocation(Irp);
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Irp->IoStatus.Information = 0L;
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Status = STATUS_SUCCESS;
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if (IrpSp->Parameters.QueryFile.FileInformationClass ==
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FileStandardInformation) {
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PFILE_STANDARD_INFORMATION Buf = Irp->AssociatedIrp.SystemBuffer;
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Buf->AllocationSize.QuadPart = 0;
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Buf->EndOfFile = Buf->AllocationSize;
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Buf->NumberOfLinks = 0;
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Buf->DeletePending = FALSE;
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Buf->Directory = FALSE;
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Irp->IoStatus.Information = sizeof(FILE_STANDARD_INFORMATION);
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} else if (IrpSp->Parameters.QueryFile.FileInformationClass ==
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FilePositionInformation) {
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((PFILE_POSITION_INFORMATION)Irp->AssociatedIrp.SystemBuffer)->
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CurrentByteOffset.QuadPart = 0;
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Irp->IoStatus.Information = sizeof(FILE_POSITION_INFORMATION);
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} else {
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Status = STATUS_INVALID_PARAMETER;
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Irp->IoStatus.Status = STATUS_INVALID_PARAMETER;
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}
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CyyCompleteRequest((PCYY_DEVICE_EXTENSION)DeviceObject->
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DeviceExtension, Irp, 0);
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return Status;
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}
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NTSTATUS
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CyySetInformationFile(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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)
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/*--------------------------------------------------------------------------
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CyySetInformationFile()
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Routine Description: This routine is used to set the end of file
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information on the opened serial port. Any other file information
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request is retured with an invalid parameter.
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This routine always ignores the actual end of file since
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the query information code always returns an end of file of 0.
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Arguments:
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DeviceObject - Pointer to the device object for this device
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Irp - Pointer to the IRP for the current request
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Return Value: The function value is the final status of the call
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--------------------------------------------------------------------------*/
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{
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NTSTATUS Status;
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UNREFERENCED_PARAMETER(DeviceObject);
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PAGED_CODE();
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if ((Status = CyyIRPPrologue(Irp,
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(PCYY_DEVICE_EXTENSION)DeviceObject->
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DeviceExtension)) != STATUS_SUCCESS) {
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if(Status != STATUS_PENDING) {
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CyyCompleteRequest((PCYY_DEVICE_EXTENSION)DeviceObject->
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DeviceExtension, Irp, IO_NO_INCREMENT);
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}
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return Status;
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}
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CyyDbgPrintEx(CYYIRPPATH, "Dispatch entry for: %x\n", Irp);
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if (CyyCompleteIfError(DeviceObject, Irp) != STATUS_SUCCESS) {
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return STATUS_CANCELLED;
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}
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Irp->IoStatus.Information = 0L;
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if ((IoGetCurrentIrpStackLocation(Irp)->
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Parameters.SetFile.FileInformationClass ==
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FileEndOfFileInformation) ||
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(IoGetCurrentIrpStackLocation(Irp)->
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Parameters.SetFile.FileInformationClass ==
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FileAllocationInformation)) {
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Status = STATUS_SUCCESS;
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} else {
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Status = STATUS_INVALID_PARAMETER;
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}
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Irp->IoStatus.Status = Status;
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CyyCompleteRequest((PCYY_DEVICE_EXTENSION)DeviceObject->
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DeviceExtension, Irp, 0);
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return Status;
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}
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