On Mon, Nov 26, 2012 at 3:38 PM, Eric W. Biederman <ebied...@xmission.com> wrote: > > So I don't know how much MS_UNBINDABLE helps over MS_PRIVATE. Both > prevent propogation of changes to other namespaces. I don't know how > much using MS_UNBINDABLE to also prevent bind mounts helps.
MS_PRIVATE says ops on children (mount, unmount) won't be propageted, MS_UNBINDABLE says the mount itself won't be copied. I think it may make sense to introduce a new flag similar to MS_UNBINDABLE that applies to namespace cloning as well as bind mounting. It says: this mount is managed by some userspace entity (autofs) and copying it to the new namespace or to some other part of the tree makes no sense since a new instance of the userspace entity responsible for managing those mounts will need to be started in the new namespace as well. I can't think of any other sane solution to this issue. Thanks, Miklos > > Eric > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
