On Fri, Aug 21, 2020 at 05:05:16PM +0200, Miklos Szeredi wrote: > On Fri, Jul 24, 2020 at 8:38 PM Vivek Goyal <vgoyal@xxxxxxxxxx> wrote: > > > > open(O_TRUNC) will not kill suid/sgid on server and fuse_open_in does not > > have information if caller has CAP_FSETID or not. > > > > So force sending setattr() which is called after open(O_TRUNC) so that > > server clears setuid/setgid. > > I don't really like the fact that we lose atomicity if > handle_killpriv_v2 is enabled. > > Let's just add a new flag to open as well. If a filesystem doesn't > want to add the complexity of handling that it can still just disable > atomic_o_trunc. Ok, will look into adding flag to open. Vivek
