Function Ext2PnpSurpriseRemove

Ext4Fsd/pnp.c:301–368

NTSTATUS
Ext2PnpSurpriseRemove (
    PEXT2_IRP_CONTEXT IrpContext,
    PEXT2_VCB         Vcb      )
{
    NTSTATUS Status;
    KEVENT   Event;
    BOOLEAN  bDeleted;

    __try {

        DEBUG(DL_PNP, ("Ext2PnpSupriseRemove by Ext2Pnp ...\n"));

        CcWaitForCurrentLazyWriterActivity();
        ExAcquireResourceExclusiveLite(
            &Vcb->MainResource,  TRUE );

        Status = Ext2LockVcb(Vcb, IrpContext->FileObject);

        ExReleaseResourceLite(&Vcb->MainResource);

        //
        // Setup the Irp. We'll send it to the lower disk driver.
        //

        IoCopyCurrentIrpStackLocationToNext(IrpContext->Irp);

        KeInitializeEvent( &Event, NotificationEvent, FALSE );
        IoSetCompletionRoutine( IrpContext->Irp,
                                Ext2PnpCompletionRoutine,
                                &Event,
                                TRUE,
                                TRUE,
                                TRUE );

        Status = IoCallDriver( Vcb->TargetDeviceObject,
                               IrpContext->Irp);

        if (Status == STATUS_PENDING) {

            KeWaitForSingleObject( &Event,
                                   Executive,
                                   KernelMode,
                                   FALSE,
                                   NULL );

            Status = IrpContext->Irp->IoStatus.Status;
        }

        /* purge volume cache */
        Ext2PurgeVolume(Vcb, FALSE);

        /* dismount volume */
        bDeleted = Ext2CheckDismount(IrpContext, Vcb, TRUE);
        SetLongFlag(Vcb->Flags, VCB_DEVICE_REMOVED);

    } __finally {