On Fri, 2017-07-07 at 12:56 +0100, John Hodrien wrote: > On Fri, 7 Jul 2017, Pete Biggs wrote: > > > Not necessarily. In order to change permissions on a file you need to > > have write access to the directory (i.e. the special file in the parent > > directory that describes the files present in the directory). > > To delete, yes, but to chmod? It makes no sense for that to be the case, as > hardlinks would end up being a touch baffling. > Yes, you're right. Sorry. The permissions must be held in a different place (chmod isn't suid so it can't write to the directory file if it doesn't have the correct permissions) - it's a long time since I last looked at filesystem internals. And this has drifted too far away from apache! P.