Re: [PATCH] private mounts

[Eric Van Hensbergen <ericvh@gmail.com>]

On 4/26/05, Miklos Szeredi <miklos@szeredi.hu> wrote:
> > that complicates things a great deal, however -- if you split the
> > concept of "srv points" from file system mounts and remount the file
> > system (perhaps automatically as part of initiating the session) for
> > every new login -- then you can revalidate security at each of these
> > mounts.
> 
> Why would you have to revalidate?  A simple bind mount would suffice.
> However, joining another sessions namespace makes more sense, than
> copying the mounts individually.
> 

Well, the forced revalidation was an attempt to protect "user-data"
from root, which, as you pointed out in your reply, is a somewhat
sketchy thing.  It may also be useful if you wish to share a
filesystem/namespace with a subset of users with a permissions model
outside of the normal user/groups model (which the user doesn't really
have any control over).

Anyways, just an additional idea for consideration -- as I said, I
don't really feel a strong need for this, so perhaps its best
forgotten for now.

          -eric