Re: Security issues with local filesystem caching

[Stephen Smalley]

On Thu, 2006-11-02 at 11:29 -0500, Karl MacMillan wrote:
> On Wed, 2006-11-01 at 12:45 -0500, Stephen Smalley wrote:
> > On Wed, 2006-11-01 at 10:58 -0500, Karl MacMillan wrote:
> 
> <snip>
> 
> 
> > > fssid seems like the wrong name, though it does match the DAC concept.
> > > This is really more general impersonation of another domain by the
> > > kernel and might have other uses.
> > 
> > NFS will want a fssid in order to have file access checks applied
> > against the client process' SID if/when the client process' context
> > becomes available.
> 
> I was suggesting that it might be helpful if this applied to all checks
> - not just file access - and would therefore need a different name.

Not all checks (e.g. not when checking the ability of another task to
send a signal to the task), but all checks where the task SID is used as
the subject/source.

-- 
Stephen Smalley
National Security Agency

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/