Re: Openat first step passfd api

[Paul Eggert]

I haven't had time to look at it carefully, but a couple of
quick reactions:

* I expect it's useful to have a portable way to pass file
  descriptors; thanks.

* The code should be redone to follow the usual GNU and
  gnulib formatting style.

* It's not clear that this will work as part of a general substitute
  for 'openat'.  For example, that would require a separate long-lived
  process, and the extra process is likely to mess things up
  for people or programs who do things like 'ps' and 'kill'.