> +unsafe extern "C" fn vmstate_pre_load_cb<
> + T,
> + F: for<'a> FnCall<(&'a T,), Result<(), impl Into<Errno>>>,
> +>(
> + opaque: *mut c_void,
> +) -> c_int {
> + // SAFETY: assumes vmstate_struct! is used correctly
> + let result = F::call((unsafe { &*(opaque.cast::<T>()) },));
> + into_neg_errno(result)
Thanks! Now I see why you used io::ErrorKind.
> +}
...
> + #[must_use]
> + pub const fn pre_load<F: for<'a> FnCall<(&'a T,), Result<(), impl
> Into<Errno>>>>(
> + mut self,
> + _f: &F,
> + ) -> Self {
Do we need to assert F is not ()?
const { assert!(F::IS_SOME) };
And I think all the other callbacks need to be checked as well.
> + self.0.pre_load = Some(vmstate_pre_load_cb::<T, F>);
> + self
> + }
Thank you :-) ! And though it's a preview,
Reviewed-by: Zhao Liu <zhao1....@intel.com>
