sermouse.c File Reference

#include "sermouse.h"
#include <debug.h>

Include dependency graph for sermouse.c:

Go to the source code of this file.

Functions
static VOID NTAPI	DriverUnload (IN PDRIVER_OBJECT DriverObject)
static NTSTATUS NTAPI	IrpStub (IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
static NTSTATUS	ReadRegistryEntries (IN PUNICODE_STRING RegistryPath, IN PSERMOUSE_DRIVER_EXTENSION DriverExtension)
NTSTATUS NTAPI	DriverEntry (IN PDRIVER_OBJECT DriverObject, IN PUNICODE_STRING RegistryPath)

Variables
static DRIVER_UNLOAD	DriverUnload
static DRIVER_DISPATCH	IrpStub
DRIVER_INITIALIZE	DriverEntry

Function Documentation

DriverEntry()

NTSTATUS NTAPI DriverEntry	(	IN PDRIVER_OBJECT	DriverObject,
		IN PUNICODE_STRING	RegistryPath
	)

Definition at line 92 of file sermouse.c.

{
    PSERMOUSE_DRIVER_EXTENSION DriverExtension;
    ULONG i;
    NTSTATUS Status;
 
    Status = IoAllocateDriverObjectExtension(
        DriverObject,
        DriverObject,
        sizeof(SERMOUSE_DRIVER_EXTENSION),
        (PVOID*)&DriverExtension);
    if (!NT_SUCCESS(Status))
    {
        WARN_(SERMOUSE, "IoAllocateDriverObjectExtension() failed with status 0x%08lx\n", Status);
        return Status;
    }
    RtlZeroMemory(DriverExtension, sizeof(SERMOUSE_DRIVER_EXTENSION));
 
    Status = ReadRegistryEntries(RegistryPath, DriverExtension);
    if (!NT_SUCCESS(Status))
    {
        WARN_(SERMOUSE, "ReadRegistryEntries() failed with status 0x%08lx\n", Status);
        return Status;
    }
 
    DriverObject->DriverUnload = DriverUnload;
    DriverObject->DriverExtension->AddDevice = SermouseAddDevice;
 
    for (i = 0; i <= IRP_MJ_MAXIMUM_FUNCTION; i++)
        DriverObject->MajorFunction[i] = IrpStub;
 
    DriverObject->MajorFunction[IRP_MJ_CREATE] = SermouseCreate;
    DriverObject->MajorFunction[IRP_MJ_CLOSE] = SermouseClose;
    DriverObject->MajorFunction[IRP_MJ_CLEANUP] = SermouseCleanup;
    //DriverObject->MajorFunction[IRP_MJ_READ] = SermouseRead;
    //DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = SermouseDeviceControl;
    DriverObject->MajorFunction[IRP_MJ_INTERNAL_DEVICE_CONTROL] = SermouseInternalDeviceControl;
    //DriverObject->MajorFunction[IRP_MJ_QUERY_INFORMATION] = SermouseQueryInformation;
    DriverObject->MajorFunction[IRP_MJ_PNP] = SermousePnp;
    //DriverObject->MajorFunction[IRP_MJ_POWER] = SermousePower;
 
    return STATUS_SUCCESS;
}

DriverUnload()

static VOID NTAPI DriverUnload ( IN PDRIVER_OBJECT  DriverObject )

static

Definition at line 18 of file sermouse.c.

{
    // nothing to do here yet
}

IrpStub()

static NTSTATUS NTAPI IrpStub ( IN PDEVICE_OBJECT  DeviceObject, IN PIRP  Irp  )

static

Definition at line 24 of file sermouse.c.

{
    ERR_(SERMOUSE, "Irp stub for major function 0x%lx\n",
        IoGetCurrentIrpStackLocation(Irp)->MajorFunction);
    IoCompleteRequest(Irp, IO_NO_INCREMENT);
    return STATUS_NOT_SUPPORTED;
}

ReadRegistryEntries()

static NTSTATUS ReadRegistryEntries ( IN PUNICODE_STRING  RegistryPath, IN PSERMOUSE_DRIVER_EXTENSION  DriverExtension  )

static

Definition at line 35 of file sermouse.c.

{
    UNICODE_STRING ParametersRegistryKey;
    RTL_QUERY_REGISTRY_TABLE Parameters[2];
    NTSTATUS Status;
 
    ULONG DefaultNumberOfButtons = 2;
 
    ParametersRegistryKey.Length = 0;
    ParametersRegistryKey.MaximumLength = RegistryPath->Length + sizeof(L"\\Parameters") + sizeof(UNICODE_NULL);
    ParametersRegistryKey.Buffer = ExAllocatePoolWithTag(PagedPool, ParametersRegistryKey.MaximumLength, SERMOUSE_TAG);
    if (!ParametersRegistryKey.Buffer)
    {
        WARN_(SERMOUSE, "ExAllocatePoolWithTag() failed\n");
        return STATUS_NO_MEMORY;
    }
    RtlCopyUnicodeString(&ParametersRegistryKey, RegistryPath);
    RtlAppendUnicodeToString(&ParametersRegistryKey, L"\\Parameters");
    ParametersRegistryKey.Buffer[ParametersRegistryKey.Length / sizeof(WCHAR)] = UNICODE_NULL;
 
    RtlZeroMemory(Parameters, sizeof(Parameters));
 
    Parameters[0].Flags = RTL_QUERY_REGISTRY_DIRECT | RTL_REGISTRY_OPTIONAL;
    Parameters[0].Name = L"NumberOfButtons";
    Parameters[0].EntryContext = &DriverExtension->NumberOfButtons;
    Parameters[0].DefaultType = REG_DWORD;
    Parameters[0].DefaultData = &DefaultNumberOfButtons;
    Parameters[0].DefaultLength = sizeof(ULONG);
 
    Status = RtlQueryRegistryValues(
        RTL_REGISTRY_ABSOLUTE,
        ParametersRegistryKey.Buffer,
        Parameters,
        NULL,
        NULL);
 
    if (NT_SUCCESS(Status))
    {
        /* Check values */
    }
    else if (Status == STATUS_OBJECT_NAME_NOT_FOUND)
    {
        /* Registry path doesn't exist. Set defaults */
        DriverExtension->NumberOfButtons = (USHORT)DefaultNumberOfButtons;
        Status = STATUS_SUCCESS;
    }
 
    ExFreePoolWithTag(ParametersRegistryKey.Buffer, SERMOUSE_TAG);
    return Status;
}

Referenced by DriverEntry().

Variable Documentation

DriverEntry

DRIVER_INITIALIZE DriverEntry

Definition at line 15 of file sermouse.c.

DriverUnload

DRIVER_UNLOAD DriverUnload

static

Definition at line 13 of file sermouse.c.

Referenced by DriverEntry().

IrpStub

DRIVER_DISPATCH IrpStub

static

Definition at line 14 of file sermouse.c.

Referenced by DriverEntry().