test_enosys: ioctl r=0 errno=Success
test_enosys: ioctl r=-1 errno=Function not implemented
test_enosys: ioctl r=-1 errno=Inappropriate ioctl for device
test_enosys: ioctl r=-1 errno=Inappropriate ioctl for device
test_enosys: ioctl r=-1 errno=Function not implemented