Re: Decoder for log messages???

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On Mon, 2007-11-05 at 16:28 -0500, Dean Anderson wrote:
> On Wed, 31 Oct 2007, Stephen Smalley wrote:
> > 
> > Not a full pathname, no.
> > 
> > We don't have enough information at the point where we do our permission
> > checks to reconstruct a pathname, 
> 
> ?? These checks are in open or exec. The full pathname should be 
> available.

Not where we do the check, no.  The audit system though can collect the
component names as the lookup occurs, and emit the name at syscall exit.

> > and such a pathname will always be process-local and not guaranteed to
> > be meaningful, stable, or the actual path by which the file was
> > accessed.  
> 
> ?? The filesystem is not process local, except perhaps /proc

The view that a process has of the filesystem can be tailored on a
per-process basis in Linux; a given pathname is only meaningful relative
to a particular namespace.

-- 
Stephen Smalley
National Security Agency


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