Function mixed_into_handle_info 

pub unsafe fn mixed_into_handle_info(
    this: Option<MixedHandle>,
) -> Result<HandleInfo, Status>

Converts the handle to a HandleInfo, with [DriverHandle]s being represented as a valid driver handle but ObjectType::NONE.

This uses Handle::basic_info to get the object type and rights for a zircon handle, so may return an error if that fails.

Safety

The caller is responsible for making sure that the handle is either converted back to a [MixedHandle] or the correct cleanup happens, or an error or leak may happen when the HandleInfo is dropped.