On Thu, 18 Mar 2010 00:19:37 +0100 I. Szczesniak wrote: > On Wed, Mar 17, 2010 at 2:57 PM, Glenn Fowler <gsf at research.att.com> wrote: > > > > On Wed, 17 Mar 2010 14:48:50 +0100 Casper.Dik at Sun.COM wrote: > >> >what happens for (4)? > > > >> Failure of what? getexecattr()? > > > > I wasn't sure if there were other failure modes > > this is covered by the NULL getexecattr() return
> Careful. getexecattr() may do NIS/LDAP lookups and rivals (in a > negative meaning) DNS lookups in performance. I don't think this is a > usable way unless the values are cached. ksh upstream got boilerplate code way back to make ksh93 pfexec aware we assume pfexec performance regressions would be the same for all shells if getexecattr() is really a hog then provide a cached version and we'll use it
