Re: Is anybody working on extending procdesc support to rfork?

On Tue, Jan 06, 2026 at 11:23:10AM -0700, Alan Somers wrote:
> The procdesc(4) interface is a Capsicum-friendly, race-free
> alternative to fork and kill.  It's a good fit for a new feature going
> into the Rust standard library.  However, it's not quite complete
> enough to do a good job.  Is anybody working on extending it?  Or even
> interested in doing so?
> 
> The functionality that Rust wants is:
> 
> * kill - we can use pdkill()
> * wait - we can use poll() or select()
> * spawn - we must use pdfork/exec .  posix_spawn would be better, but
> we can't do such a thing without procdesc support in rfork.

So what exactly is missing?  Can you propose a scetch of the desired API?