NTSTATUS
NtfsFsdLockControl (
IN PVOLUME_DEVICE_OBJECT VolumeDeviceObject,
IN PIRP Irp
)
/*++
Routine Description:
This routine implements the FSD part of Lock Control.
Arguments:
VolumeDeviceObject - Supplies the volume device object where the
file exists
Irp - Supplies the Irp being processed
Return Value:
NTSTATUS - The FSD status for the IRP
--*/
{
TOP_LEVEL_CONTEXT TopLevelContext;
PTOP_LEVEL_CONTEXT ThreadTopLevelContext;
NTSTATUS Status = STATUS_SUCCESS;
PIRP_CONTEXT IrpContext = NULL;
ASSERT_IRP( Irp );
UNREFERENCED_PARAMETER( VolumeDeviceObject );
PAGED_CODE();
DebugTrace( +1, Dbg, ("NtfsFsdLockControl\n") );
//
// Call the common Lock Control routine
//
FsRtlEnterFileSystem();
ThreadTopLevelContext = NtfsSetTopLevelIrp( &TopLevelContext, FALSE, FALSE );
do {
try {
//
// We are either initiating this request or retrying it.
//
if (IrpContext == NULL) {
IrpContext = NtfsCreateIrpContext( Irp, CanFsdWait( Irp ) );
NtfsUpdateIrpContextWithTopLevel( IrpContext, ThreadTopLevelContext );
} else if (Status == STATUS_LOG_FILE_FULL) {
NtfsCheckpointForLogFileFull( IrpContext );
}
Status = NtfsCommonLockControl( IrpContext, Irp );
break;
} except(NtfsExceptionFilter( IrpContext, GetExceptionInformation() )) {
//
// 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 = NtfsProcessException( IrpContext, Irp, GetExceptionCode() );
}
} while (Status == STATUS_CANT_WAIT ||
Status == STATUS_LOG_FILE_FULL);
if (ThreadTopLevelContext == &TopLevelContext) {
NtfsRestoreTopLevelIrp( ThreadTopLevelContext );
}
FsRtlExitFileSystem();
//
// And return to our caller
//
DebugTrace( -1, Dbg, ("NtfsFsdLockControl -> %08lx\n", Status) );
return Status;
}
VOID
NtfsLoadAddOns (
IN PDRIVER_OBJECT DriverObject,
IN PVOID Context,
IN ULONG Count
)
/*++
Routine Description:
This routine attempts to load any NTFS add-ons and notify them about
any previously mounted volumes.
Arguments:
DriverObject - Driver object for NTFS
Context - Unused, required by I/O system.
Count - Unused, required by I/O system.
Return Value:
None.
--*/
{
NTSTATUS Status;
UNICODE_STRING UnicodeString;
ULONG i;
WCHAR Buffer[80];
TOP_LEVEL_CONTEXT TopLevelContext;
PTOP_LEVEL_CONTEXT ThreadTopLevelContext;
IRP_CONTEXT LocalIrpContext;
IRP LocalIrp;
PIRP_CONTEXT IrpContext;
PLIST_ENTRY Links;
PVCB Vcb;
PVCB VcbForTearDown = NULL;
BOOLEAN AcquiredGlobal = FALSE;
PAGED_CODE();
UNREFERENCED_PARAMETER(Context);
UNREFERENCED_PARAMETER(Count);
UNREFERENCED_PARAMETER(DriverObject);
//
// For each add-on try to load it.
//
for (i = 0; NtfsAddonNames[i] != NULL; i++) {
wcscpy(Buffer, NTFS_SERVICE_KEY);
wcscat(Buffer, NtfsAddonNames[i]);
RtlInitUnicodeString( &UnicodeString, Buffer);
Status = ZwLoadDriver( &UnicodeString );
#if DBG
DbgPrint("NtfsLoadAddOns: Loaded module %ws. Status = 0x%lx\n", Buffer, Status);
#endif
}
RtlZeroMemory( &LocalIrpContext, sizeof(LocalIrpContext) );
RtlZeroMemory( &LocalIrp, sizeof(LocalIrp) );
IrpContext = &LocalIrpContext;
IrpContext->NodeTypeCode = NTFS_NTC_IRP_CONTEXT;
IrpContext->NodeByteSize = sizeof(IRP_CONTEXT);
IrpContext->OriginatingIrp = &LocalIrp;
SetFlag(IrpContext->Flags, IRP_CONTEXT_FLAG_WAIT);
InitializeListHead( &IrpContext->ExclusiveFcbList );
//
// Make sure we don't get any pop-ups
//
ThreadTopLevelContext = NtfsSetTopLevelIrp( &TopLevelContext, TRUE, FALSE );
ASSERT( ThreadTopLevelContext == &TopLevelContext );
(VOID) ExAcquireResourceShared( &NtfsData.Resource, TRUE );
AcquiredGlobal = TRUE;
__try {
NtfsUpdateIrpContextWithTopLevel( IrpContext, ThreadTopLevelContext );
__try {
for (Links = NtfsData.VcbQueue.Flink;
Links != &NtfsData.VcbQueue;
Links = Links->Flink) {
Vcb = CONTAINING_RECORD(Links, VCB, VcbLinks);
IrpContext->Vcb = Vcb;
if (FlagOn( Vcb->VcbState, VCB_STATE_VOLUME_MOUNTED )) {
Status = CiMountVolume( Vcb, IrpContext);
// Bugbug: What should we do if this fails?
// BugBug: add call out for views.
NtfsCommitCurrentTransaction( IrpContext );
}
}
} __except(NtfsExceptionFilter( IrpContext, GetExceptionInformation() )) {
NOTHING;
}
} __finally {
if (AcquiredGlobal) {
ExReleaseResource( &NtfsData.Resource );
}
NtfsRestoreTopLevelIrp( ThreadTopLevelContext );
}
//
// And return to our caller
//
return;
}
