In message <Pine.NEB.4.21.0009162028420.274-100000@odysseus.mono.org> abs@purplei.com writes:
: 	I have a linux binary here which calls the mkdir system call with
: 	a trailing /

It should ENOENT if the directory doesn't exist and EEXIST if it does.

Why?  If the directory doesn't exist for "/foo/bar/", then /foo/bar
won't exist, and return the error.  If it does, then "/foo/bar/."
exists.  I believe that the standard states that null path components
are treated as '.'.  I don't have the standards docs handy, but recall
this from past discussions on related topics.

Warner