Function Ext2DeviceControl

Ext4Fsd/devctl.c:755–812

}

NTSTATUS
Ext2DeviceControl (IN PEXT2_IRP_CONTEXT IrpContext)
{
    PIRP                Irp;
    PIO_STACK_LOCATION  irpSp;
    ULONG               code;
    ULONG               length;
    NTSTATUS            Status;

    ASSERT(IrpContext);

    ASSERT((IrpContext->Identifier.Type == EXT2ICX) &&
           (IrpContext->Identifier.Size == sizeof(EXT2_IRP_CONTEXT)));

    Irp = IrpContext->Irp;

    irpSp = IoGetCurrentIrpStackLocation(Irp);

    code = irpSp->Parameters.DeviceIoControl.IoControlCode;
    length = irpSp->Parameters.DeviceIoControl.OutputBufferLength;

    switch (code) {

    case IOCTL_APP_VOLUME_PROPERTY:
        Status = Ext2ProcessUserProperty(
                     IrpContext,
                     Irp->AssociatedIrp.SystemBuffer,
                     length
                 );
        break;

    case IOCTL_APP_QUERY_PERFSTAT:
        Status = Ex2ProcessUserPerfStat(
                     IrpContext,
                     Irp->AssociatedIrp.SystemBuffer,
                     length
                 );
        break;

    case IOCTL_APP_MOUNT_POINT:
        Status = Ex2ProcessMountPoint(
                     IrpContext,
                     Irp->AssociatedIrp.SystemBuffer,
                     length
                 );
        break;

#if EXT2_UNLOAD
    case IOCTL_PREPARE_TO_UNLOAD:
        Status = Ext2PrepareToUnload(IrpContext);
        break;
#endif
    default:
        Status = Ext2DeviceControlNormal(IrpContext);
    }

    return Status;
}