513 lines
14 KiB
C
513 lines
14 KiB
C
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/*++
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Copyright (c) 2000 Microsoft Corporation
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Module Name:
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ioctl.c
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Abstract: Contains routines to support HIDCLASS internal
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ioctl queries for the pen tablet devices.
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Environment:
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Kernel mode
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Author:
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Michael Tsang (MikeTs) 13-Apr-2000
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Revision History:
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--*/
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#include "pch.h"
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text(PAGE, GetDeviceDescriptor)
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#pragma alloc_text(PAGE, GetReportDescriptor)
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#pragma alloc_text(PAGE, GetString)
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#pragma alloc_text(PAGE, GetAttributes)
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#endif
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/*****************************************************************************
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*
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* @doc EXTERNAL
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*
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* @func NTSTATUS | HbutInternalIoctl |
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* Process the Control IRPs sent to this device.
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* <nl>This function cannot be pageable because reads/writes
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* can be made at dispatch-level
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*
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* @parm IN PDRIVER_OBJECT | DevObj | Points to the driver object.
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* @parm IN PIRP | Irp | Points to an I/O Request Packet.
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*
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* @rvalue SUCCESS | returns STATUS_SUCCESS
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* @rvalue FAILURE | returns NT status code
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*
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*****************************************************************************/
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NTSTATUS EXTERNAL
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HbutInternalIoctl(
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IN PDEVICE_OBJECT DevObj,
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IN PIRP Irp
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)
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{
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PROCNAME("HbutInternalIoctl")
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NTSTATUS status;
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PIO_STACK_LOCATION irpsp;
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PDEVICE_EXTENSION devext;
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irpsp = IoGetCurrentIrpStackLocation(Irp);
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ENTER(1, ("(DevObj=%p,Irp=%p,IrpSp=%p,Ioctl=%s)\n",
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DevObj, Irp, irpsp,
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LookupName(irpsp->Parameters.DeviceIoControl.IoControlCode,
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HidIoctlNames)));
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Irp->IoStatus.Information = 0;
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devext = GET_MINIDRIVER_DEVICE_EXTENSION(DevObj);
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status = IoAcquireRemoveLock(&devext->RemoveLock, Irp);
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if (!NT_SUCCESS(status))
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{
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ERRPRINT(("received PnP IRP after device was removed\n"));
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Irp->IoStatus.Status = status;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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}
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else
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{
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ASSERT(devext->dwfHBut & HBUTF_DEVICE_STARTED);
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switch(irpsp->Parameters.DeviceIoControl.IoControlCode)
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{
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case IOCTL_HID_GET_DEVICE_DESCRIPTOR:
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status = GetDeviceDescriptor(DevObj, Irp);
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break;
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case IOCTL_HID_GET_REPORT_DESCRIPTOR:
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status = GetReportDescriptor(DevObj, Irp);
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break;
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case IOCTL_HID_READ_REPORT:
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status = ReadReport(DevObj, Irp);
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break;
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case IOCTL_HID_GET_STRING:
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status = GetString(DevObj, Irp);
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break;
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case IOCTL_HID_GET_DEVICE_ATTRIBUTES:
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status = GetAttributes(DevObj, Irp);
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break;
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case IOCTL_HID_ACTIVATE_DEVICE:
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case IOCTL_HID_DEACTIVATE_DEVICE:
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status = STATUS_SUCCESS;
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break;
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default:
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WARNPRINT(("unsupported ioctl code (ioctl=%s)\n",
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LookupName(irpsp->Parameters.DeviceIoControl.IoControlCode,
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HidIoctlNames)));
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status = Irp->IoStatus.Status;
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break;
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}
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if (status != STATUS_PENDING)
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{
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IoReleaseRemoveLock(&devext->RemoveLock, Irp);
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Irp->IoStatus.Status = status;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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}
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else
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{
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IoMarkIrpPending(Irp);
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}
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}
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EXIT(1, ("=%x\n", status));
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return status;
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} //HbutInternalIoctl
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/*****************************************************************************
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*
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* @doc INTERNAL
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*
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* @func NTSTATUS | GetDeviceDescriptor |
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* Respond to HIDCLASS IOCTL_HID_GET_DEVICE_DESCRIPTOR
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* by returning a device descriptor.
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*
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* @parm IN PDRIVER_OBJECT | DevObj | Points to the driver object.
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* @parm IN PIRP | Irp | Points to an I/O Request Packet.
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*
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* @rvalue SUCCESS | returns STATUS_SUCCESS
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* @rvalue FAILURE | returns STATUS_BUFFER_TOO_SMALL - need more memory
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*
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*****************************************************************************/
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NTSTATUS INTERNAL
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GetDeviceDescriptor(
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IN PDEVICE_OBJECT DevObj,
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IN PIRP Irp
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)
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{
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PROCNAME("GetDeviceDescriptor")
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NTSTATUS status;
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PIO_STACK_LOCATION irpsp;
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PAGED_CODE ();
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irpsp = IoGetCurrentIrpStackLocation(Irp);
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ENTER(2, ("(DevObj=%p,Irp=%p,IrpSp=%p)\n", DevObj, Irp, irpsp));
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if (irpsp->Parameters.DeviceIoControl.OutputBufferLength <
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sizeof(gHidDescriptor))
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{
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ERRPRINT(("output buffer too small (bufflen=%d)\n",
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irpsp->Parameters.DeviceIoControl.OutputBufferLength));
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status = STATUS_BUFFER_TOO_SMALL;
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}
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else
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{
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RtlCopyMemory(Irp->UserBuffer,
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&gHidDescriptor,
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sizeof(gHidDescriptor));
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Irp->IoStatus.Information = sizeof(gHidDescriptor);
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status = STATUS_SUCCESS;
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}
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EXIT(2, ("=%x\n", status));
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return status;
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} //GetDeviceDescriptor
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/*****************************************************************************
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*
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* @doc INTERNAL
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*
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* @func NTSTATUS | GetReportDescriptor |
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* Respond to HIDCLASS IOCTL_HID_GET_REPORT_DESCRIPTOR
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* by returning appropriate the report descriptor.
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*
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* @parm IN PDRIVER_OBJECT | DevObj | Points to the driver object.
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* @parm IN PIRP | Irp | Points to an I/O Request Packet.
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*
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* @rvalue SUCCESS | returns STATUS_SUCCESS
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* @rvalue FAILURE | returns NT status code
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*
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*****************************************************************************/
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NTSTATUS INTERNAL
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GetReportDescriptor(
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IN PDEVICE_OBJECT DevObj,
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IN PIRP Irp
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)
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{
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PROCNAME("GetReportDescriptor")
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NTSTATUS status;
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PIO_STACK_LOCATION irpsp;
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PAGED_CODE ();
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irpsp = IoGetCurrentIrpStackLocation(Irp);
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ENTER(2, ("(DevObj=%p,Irp=%p,IrpSp=%p\n", DevObj, Irp, irpsp));
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if (irpsp->Parameters.DeviceIoControl.OutputBufferLength <
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sizeof(gReportDescriptor))
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{
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ERRPRINT(("output buffer too small (bufflen=%d)\n",
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irpsp->Parameters.DeviceIoControl.OutputBufferLength));
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status = STATUS_BUFFER_TOO_SMALL;
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}
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else
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{
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RtlCopyMemory(Irp->UserBuffer,
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gReportDescriptor,
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sizeof(gReportDescriptor));
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Irp->IoStatus.Information = sizeof(gReportDescriptor);
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status = STATUS_SUCCESS;
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}
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EXIT(2, ("=%x\n", status));
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return status;
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} //GetReportDescriptor
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/*****************************************************************************
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*
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* @doc INTERNAL
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*
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* @func NTSTATUS | ReadReport |
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* Read input report.
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*
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* @parm IN PDRIVER_OBJECT | DevObj | Points to the driver object.
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* @parm IN PIRP | Irp | Points to an I/O Request Packet.
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*
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* @rvalue SUCCESS | returns STATUS_SUCCESS
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* @rvalue FAILURE | returns NT status code
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*
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*****************************************************************************/
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NTSTATUS INTERNAL
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ReadReport(
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IN PDEVICE_OBJECT DevObj,
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IN PIRP Irp
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)
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{
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PROCNAME("ReadReport")
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NTSTATUS status;
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PIO_STACK_LOCATION irpsp;
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PDEVICE_EXTENSION devext;
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irpsp = IoGetCurrentIrpStackLocation(Irp);
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ENTER(2, ("(DevObj=%p,Irp=%p,IrpSp=%p)\n", DevObj, Irp, irpsp));
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ASSERT(Irp->UserBuffer != NULL);
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devext = GET_MINIDRIVER_DEVICE_EXTENSION(DevObj);
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if (irpsp->Parameters.DeviceIoControl.OutputBufferLength !=
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sizeof(OEM_INPUT_REPORT))
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{
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ERRPRINT(("invalid input report size (bufflen=%d)\n",
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irpsp->Parameters.DeviceIoControl.OutputBufferLength));
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status = STATUS_INVALID_BUFFER_SIZE;
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}
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else if (!(devext->dwfHBut & HBUTF_DEVICE_STARTED))
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{
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ERRPRINT(("device not started yet\n"));
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status = STATUS_DEVICE_NOT_READY ;
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}
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else
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{
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KIRQL OldIrql;
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PDRIVER_CANCEL OldCancelRoutine;
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KeAcquireSpinLock(&devext->SpinLock, &OldIrql);
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OldCancelRoutine = IoSetCancelRoutine(Irp, ReadReportCanceled);
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ASSERT(OldCancelRoutine == NULL);
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if (Irp->Cancel)
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{
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//
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// This IRP was canceled. Do not queue it.
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//
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OldCancelRoutine = IoSetCancelRoutine(Irp, NULL);
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if (OldCancelRoutine != NULL)
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{
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//
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// Cancel routine was not called.
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//
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ASSERT(OldCancelRoutine == ReadReportCanceled);
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status = STATUS_CANCELLED;
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}
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else
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{
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//
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// Cancel routine was called and it will complete this IRP
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// as soon as we drop the spinlock. Return PENDING so the
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// caller doesn't touch this IRP.
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//
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InitializeListHead(&Irp->Tail.Overlay.ListEntry);
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IoMarkIrpPending(Irp);
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status = STATUS_PENDING;
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}
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}
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else
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{
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InsertTailList(&devext->PendingIrpList,
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&Irp->Tail.Overlay.ListEntry);
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IoMarkIrpPending(Irp);
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status = STATUS_PENDING;
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}
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KeReleaseSpinLock(&devext->SpinLock, OldIrql);
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}
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EXIT(2, ("=%x\n", status));
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return status;
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} //ReadReport
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/*****************************************************************************
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*
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* @doc EXTERNAL
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*
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* @func VOID | ReadReportCanceled |
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* ReadReport IRP has been canceled, so do the clean up.
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*
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* @parm IN PDEVICE_OBJECT | DevObj | Points to the device object.
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* @parm IN PIRP | Irp | Points to an I/O Request Packet.
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*
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* @rvalue None.
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*
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*****************************************************************************/
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VOID EXTERNAL
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ReadReportCanceled(
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IN PDEVICE_OBJECT DevObj,
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IN PIRP Irp
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)
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{
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PROCNAME("ReadReportCanceled")
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PDEVICE_EXTENSION devext;
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KIRQL OldIrql;
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ENTER(2, ("(DevObj=%p,Irp=%p)\n", DevObj, Irp));
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ASSERT(Irp->Cancel);
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ASSERT(Irp->CancelRoutine == NULL);
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devext = GET_MINIDRIVER_DEVICE_EXTENSION(DevObj);
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KeAcquireSpinLock(&devext->SpinLock, &OldIrql);
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RemoveEntryList(&Irp->Tail.Overlay.ListEntry);
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KeReleaseSpinLock(&devext->SpinLock, OldIrql);
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IoReleaseCancelSpinLock(Irp->CancelIrql);
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Irp->IoStatus.Status = STATUS_CANCELLED;
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IoReleaseRemoveLock(&devext->RemoveLock, Irp);
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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WARNPRINT(("ReadReport IRP was canceled\n"));
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EXIT(2, ("!\n"));
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return;
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} //ReadReportCanceled
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/*****************************************************************************
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*
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* @doc INTERNAL
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*
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* @func NTSTATUS | GetString |
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* Respond to IOCTL_HID_GET_STRING.
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*
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* @parm IN PDRIVER_OBJECT | DevObj | Points to the driver object.
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* @parm IN PIRP | Irp | Points to an I/O Request Packet.
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*
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* @rvalue SUCCESS | returns STATUS_SUCCESS
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* @rvalue FAILURE | returns NT status code
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*
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*****************************************************************************/
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NTSTATUS INTERNAL
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GetString(
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PDEVICE_OBJECT DevObj,
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PIRP Irp
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)
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{
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PROCNAME("GetString")
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NTSTATUS status;
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PIO_STACK_LOCATION irpsp;
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PWSTR pwstrID;
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||
|
|
ULONG lenID;
|
||
|
|
|
||
|
|
PAGED_CODE();
|
||
|
|
|
||
|
|
irpsp = IoGetCurrentIrpStackLocation(Irp);
|
||
|
|
|
||
|
|
ENTER(2, ("(DevObj=%p,Irp=%p,IrpSp=%p,StringID=%x)\n",
|
||
|
|
DevObj, Irp, irpsp,
|
||
|
|
(ULONG_PTR)irpsp->Parameters.DeviceIoControl.Type3InputBuffer));
|
||
|
|
|
||
|
|
switch ((ULONG_PTR)irpsp->Parameters.DeviceIoControl.Type3InputBuffer &
|
||
|
|
0xffff)
|
||
|
|
{
|
||
|
|
case HID_STRING_ID_IMANUFACTURER:
|
||
|
|
pwstrID = gpwstrManufacturerID;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case HID_STRING_ID_IPRODUCT:
|
||
|
|
pwstrID = gpwstrProductID;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case HID_STRING_ID_ISERIALNUMBER:
|
||
|
|
pwstrID = gpwstrSerialNumber;
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
pwstrID = NULL;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
lenID = pwstrID? wcslen(pwstrID)*sizeof(WCHAR) + sizeof(UNICODE_NULL): 0;
|
||
|
|
if (pwstrID == NULL)
|
||
|
|
{
|
||
|
|
ERRPRINT(("invalid string ID (ID=%x)\n",
|
||
|
|
(ULONG_PTR)irpsp->Parameters.DeviceIoControl.Type3InputBuffer));
|
||
|
|
status = STATUS_INVALID_PARAMETER;
|
||
|
|
}
|
||
|
|
else if (irpsp->Parameters.DeviceIoControl.OutputBufferLength < lenID)
|
||
|
|
{
|
||
|
|
ERRPRINT(("output buffer too small (bufflen=%d,need=%d)\n",
|
||
|
|
irpsp->Parameters.DeviceIoControl.OutputBufferLength, lenID));
|
||
|
|
status = STATUS_BUFFER_TOO_SMALL;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
RtlCopyMemory(Irp->UserBuffer, pwstrID, lenID);
|
||
|
|
|
||
|
|
Irp->IoStatus.Information = lenID;
|
||
|
|
status = STATUS_SUCCESS;
|
||
|
|
}
|
||
|
|
|
||
|
|
EXIT(2, ("=%x (string=%S)\n", status, pwstrID? pwstrID: L"Null"));
|
||
|
|
return status;
|
||
|
|
} //GetString
|
||
|
|
|
||
|
|
/*****************************************************************************
|
||
|
|
*
|
||
|
|
* @doc INTERNAL
|
||
|
|
*
|
||
|
|
* @func NTSTATUS | GetAttributes |
|
||
|
|
* Respond to IOCTL_HID_GET_ATTRIBUTES, by filling
|
||
|
|
* the HID_DEVICE_ATTRIBUTES struct.
|
||
|
|
*
|
||
|
|
* @parm IN PDRIVER_OBJECT | DevObj | Points to the driver object.
|
||
|
|
* @parm IN PIRP | Irp | Points to an I/O Request Packet.
|
||
|
|
*
|
||
|
|
* @rvalue SUCCESS | returns STATUS_SUCCESS
|
||
|
|
* @rvalue FAILURE | returns NT status code
|
||
|
|
*
|
||
|
|
*****************************************************************************/
|
||
|
|
|
||
|
|
NTSTATUS INTERNAL
|
||
|
|
GetAttributes(
|
||
|
|
PDEVICE_OBJECT DevObj,
|
||
|
|
PIRP Irp
|
||
|
|
)
|
||
|
|
{
|
||
|
|
PROCNAME("GetAttributes")
|
||
|
|
NTSTATUS status;
|
||
|
|
PIO_STACK_LOCATION irpsp;
|
||
|
|
|
||
|
|
PAGED_CODE();
|
||
|
|
|
||
|
|
irpsp = IoGetCurrentIrpStackLocation(Irp);
|
||
|
|
|
||
|
|
ENTER(2, ("(DevObj=%p,Irp=%p,IrpSp=%p)\n", DevObj, Irp, irpsp));
|
||
|
|
|
||
|
|
if (irpsp->Parameters.DeviceIoControl.OutputBufferLength <
|
||
|
|
sizeof(HID_DEVICE_ATTRIBUTES))
|
||
|
|
{
|
||
|
|
ERRPRINT(("output buffer too small (bufflen=%d)\n",
|
||
|
|
irpsp->Parameters.DeviceIoControl.OutputBufferLength));
|
||
|
|
status = STATUS_BUFFER_TOO_SMALL;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
PDEVICE_EXTENSION devext;
|
||
|
|
PHID_DEVICE_ATTRIBUTES DevAttrib;
|
||
|
|
|
||
|
|
devext = GET_MINIDRIVER_DEVICE_EXTENSION(DevObj);
|
||
|
|
DevAttrib = (PHID_DEVICE_ATTRIBUTES)Irp->UserBuffer;
|
||
|
|
|
||
|
|
DevAttrib->Size = sizeof(HID_DEVICE_ATTRIBUTES);
|
||
|
|
DevAttrib->VendorID = OEM_VENDOR_ID;
|
||
|
|
DevAttrib->ProductID = OEM_PRODUCT_ID;
|
||
|
|
DevAttrib->VersionNumber = OEM_VERSION_NUM;
|
||
|
|
|
||
|
|
Irp->IoStatus.Information = sizeof(HID_DEVICE_ATTRIBUTES);
|
||
|
|
status = STATUS_SUCCESS;
|
||
|
|
}
|
||
|
|
|
||
|
|
EXIT(2, ("=%x\n", status));
|
||
|
|
return status;
|
||
|
|
} //GetAttributes
|