Re: [Devel] Re: [patch 05/10] add "permit user mounts in new namespace" clone flag

Miklos Szeredi
2007-04-16T09:35:51Z

> > Given the existence of shared subtrees allowing/denying this at the
> > mount
> > namespace level is silly and wrong.
> >
> > If we need more than just the filesystem permission checks can we
> > make it a mount flag settable with mount and remount that allows
> > non-privileged users the ability to create mount points under it
> > in directories they have full read/write access to.
>
> Also for bind-mount and remount operations the flag has to be propagated
> down its propagation tree. Otherwise a unpriviledged mount in a shared
> mount wont get reflected in its peers and slaves, leading to unidentical
> shared-subtrees.

That's an interesting question. Do we want shared mounts to be
totally identical, including mnt_flags? It doesn't look as if
do_remount() guarantees that currently.

Miklos