Re: [PATCH] cifs: handle termination of cifs oplockd kernel thread

[Miklos Szeredi <miklos@szeredi.hu>]

> Except that we don't have the concept of a mount owner at the VFS level
> right now, because everyone is adding stupid suid wrapper hacks instead
> of trying to fix the problems for real.

Having a mount owner is not a problem.  Having a good policy for
accepting mounts is rather more so, according to some:

   http://marc.theaimsgroup.com/?l=linux-kernel&m=107705608603071&w=2

Just a little taste of what that policy would involve:

  - global limit on user mounts
  - possibly per user limit on mounts
  - acceptable mountpoints (unlimited writablity is probably a good minimum)
  - acceptable mount options (nosuid, nodev are obviously not)
  - filesystems "safe" to mount by users

I'm not against something like that, but I'd like to hear other
people's opinion before trying to push a solution to mainline.

Thanks,
Miklos
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