On Tue, Jan 14, 2020 at 08:25:19AM +0800, Ian Kent wrote: > This isn't right. > > There's actually nothing stopping a user from using a direct map > entry that's a multi-mount without an actual mount at its root. > So there could be directories created under these, it's just not > usually done. > > I'm pretty sure I don't check and disallow this. IDGI... How the hell will that work in v5? Who will set _any_ traps outside the one in root in that scenario? autofs_lookup() won't (there it's conditional upon indirect mount). Neither will autofs_dir_mkdir() (conditional upon version being less than 5). Who will, then? Confused...