Re: VFS: Dynamic umask for the access rights of linked objects

[Jiri Kosina]

On Tue, 28 Feb 2006, Chris Wright wrote:

> Solar Designer's Openwall Linux patch contains code for these types of
> restrictions (at least since 2.2 if not earlier).  Idea was stolen and
> made into an LSM smth like 4 or 5 years ago.  Neither of these have made
> it upstream.  Attempts have also been made to codify such restrictions
> in SELinux policy.  Polyinstantiation and per-process namespaces can be
> done effectively with code that's now in mainline, and can mitigate much
> of this risk.

Just to make the discussion complete, I point out to the paper about a 
thing called RaceGuard, presented at USENIX some time ago - 
http://www.usenix.org/events/sec01/full_papers/cowanbeattie/cowanbeattie.pdf

-- 
JiKos.
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