NTSTATUS
DriverEntry(
__in PDRIVER_OBJECT DriverObject,
__in PUNICODE_STRING RegistryPath
)
/*++
Routine Description:
This is the initialization routine for the Cdrom file system
device driver. This routine creates the device object for the FileSystem
device and performs all other driver initialization.
Arguments:
DriverObject - Pointer to driver object created by the system.
Return Value:
NTSTATUS - The function value is the final status from the initialization
operation.
--*/
{
NTSTATUS Status;
UNICODE_STRING UnicodeString;
PDEVICE_OBJECT CdfsFileSystemDeviceObject;
FS_FILTER_CALLBACKS FilterCallbacks;
UNREFERENCED_PARAMETER( RegistryPath );
//
// Create the device object.
//
RtlInitUnicodeString( &UnicodeString, L"\\Cdfs" );
Status = IoCreateDevice( DriverObject,
0,
&UnicodeString,
FILE_DEVICE_CD_ROM_FILE_SYSTEM,
0,
FALSE,
&CdfsFileSystemDeviceObject );
if (!NT_SUCCESS( Status )) {
return Status;
}
#pragma prefast(push)
#pragma prefast(disable: 28155, "the dispatch routine has the correct type, prefast is just being paranoid.")
#pragma prefast(disable: 28168, "the dispatch routine has the correct type, prefast is just being paranoid.")
#pragma prefast(disable: 28169, "the dispatch routine has the correct type, prefast is just being paranoid.")
#pragma prefast(disable: 28175, "we're allowed to change these.")
DriverObject->DriverUnload = CdUnload;
//
// Note that because of the way data caching is done, we set neither
// the Direct I/O or Buffered I/O bit in DeviceObject->Flags. If
// data is not in the cache, or the request is not buffered, we may,
// set up for Direct I/O by hand.
//
//
// Initialize the driver object with this driver's entry points.
//
// NOTE - Each entry in the dispatch table must have an entry in
// the Fsp/Fsd dispatch switch statements.
//
DriverObject->MajorFunction[IRP_MJ_CREATE] =
DriverObject->MajorFunction[IRP_MJ_CLOSE] =
DriverObject->MajorFunction[IRP_MJ_READ] =
DriverObject->MajorFunction[IRP_MJ_WRITE] =
DriverObject->MajorFunction[IRP_MJ_QUERY_INFORMATION] =
DriverObject->MajorFunction[IRP_MJ_SET_INFORMATION] =
DriverObject->MajorFunction[IRP_MJ_QUERY_VOLUME_INFORMATION]=
DriverObject->MajorFunction[IRP_MJ_DIRECTORY_CONTROL] =
DriverObject->MajorFunction[IRP_MJ_FILE_SYSTEM_CONTROL] =
DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] =
DriverObject->MajorFunction[IRP_MJ_LOCK_CONTROL] =
DriverObject->MajorFunction[IRP_MJ_CLEANUP] =
DriverObject->MajorFunction[IRP_MJ_PNP] =
DriverObject->MajorFunction[IRP_MJ_SHUTDOWN] = (PDRIVER_DISPATCH) CdFsdDispatch;
#pragma prefast(pop)
#pragma prefast(suppress: 28175, "this is a file system driver, we're allowed to touch FastIoDispatch.")
DriverObject->FastIoDispatch = &CdFastIoDispatch;
//
// Initialize the filter callbacks we use.
//
RtlZeroMemory( &FilterCallbacks,
sizeof(FS_FILTER_CALLBACKS) );
FilterCallbacks.SizeOfFsFilterCallbacks = sizeof(FS_FILTER_CALLBACKS);
FilterCallbacks.PreAcquireForSectionSynchronization = CdFilterCallbackAcquireForCreateSection;
Status = FsRtlRegisterFileSystemFilterCallbacks( DriverObject,
&FilterCallbacks );
if (!NT_SUCCESS( Status )) {
IoDeleteDevice( CdfsFileSystemDeviceObject );
return Status;
}
//
// Initialize the global data structures
//
Status = CdInitializeGlobalData( DriverObject, CdfsFileSystemDeviceObject );
if (!NT_SUCCESS (Status)) {
IoDeleteDevice (CdfsFileSystemDeviceObject);
return Status;
}
//
// Register the file system as low priority with the I/O system. This will cause
// CDFS to receive mount requests after a) other filesystems currently registered
// and b) other normal priority filesystems that may be registered later.
//
CdfsFileSystemDeviceObject->Flags |= DO_LOW_PRIORITY_FILESYSTEM;
IoRegisterFileSystem( CdfsFileSystemDeviceObject );
ObReferenceObject (CdfsFileSystemDeviceObject);
//
// And return to our caller
//
return( STATUS_SUCCESS );
}
NTSTATUS
DriverEntry(
IN PDRIVER_OBJECT DriverObject,
IN PUNICODE_STRING RegistryPath
)
/*++
Routine Description:
This is the initialization routine for the Cdrom file system
device driver. This routine creates the device object for the FileSystem
device and performs all other driver initialization.
Arguments:
DriverObject - Pointer to driver object created by the system.
Return Value:
NTSTATUS - The function value is the final status from the initialization
operation.
--*/
{
NTSTATUS Status;
UNICODE_STRING UnicodeString;
PDEVICE_OBJECT CdfsFileSystemDeviceObject;
//
// Create the device object.
//
RtlInitUnicodeString( &UnicodeString, L"\\Cdfs" );
Status = IoCreateDevice( DriverObject,
0,
&UnicodeString,
FILE_DEVICE_CD_ROM_FILE_SYSTEM,
0,
FALSE,
&CdfsFileSystemDeviceObject );
if (!NT_SUCCESS( Status )) {
return Status;
}
//
// Note that because of the way data caching is done, we set neither
// the Direct I/O or Buffered I/O bit in DeviceObject->Flags. If
// data is not in the cache, or the request is not buffered, we may,
// set up for Direct I/O by hand.
//
//
// Initialize the driver object with this driver's entry points.
//
// NOTE - Each entry in the dispatch table must have an entry in
// the Fsp/Fsd dispatch switch statements.
//
DriverObject->MajorFunction[IRP_MJ_CREATE] =
DriverObject->MajorFunction[IRP_MJ_CLOSE] =
DriverObject->MajorFunction[IRP_MJ_READ] =
DriverObject->MajorFunction[IRP_MJ_QUERY_INFORMATION] =
DriverObject->MajorFunction[IRP_MJ_SET_INFORMATION] =
DriverObject->MajorFunction[IRP_MJ_QUERY_VOLUME_INFORMATION]=
DriverObject->MajorFunction[IRP_MJ_DIRECTORY_CONTROL] =
DriverObject->MajorFunction[IRP_MJ_FILE_SYSTEM_CONTROL] =
DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] =
DriverObject->MajorFunction[IRP_MJ_LOCK_CONTROL] =
DriverObject->MajorFunction[IRP_MJ_CLEANUP] = (PDRIVER_DISPATCH) CdFsdDispatch;
DriverObject->FastIoDispatch = &CdFastIoDispatch;
//
// Initialize the global data structures
//
CdInitializeGlobalData( DriverObject, CdfsFileSystemDeviceObject );
//
// Register the file system with the I/O system
//
IoRegisterFileSystem( CdfsFileSystemDeviceObject );
//
// And return to our caller
//
return( STATUS_SUCCESS );
}
