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SubjectRe: Versioning file system
On Mon, 18 June 2007 18:10:21 -0400, Theodore Tso wrote:
> On Mon, Jun 18, 2007 at 02:31:14PM -0700, H. Peter Anvin wrote:
> > And that makes them different from extended attributes, how?
> >
> > Both of these really are nothing but ad hocky syntactic sugar for
> > directories, sometimes combined with in-filesystem support for small
> > data items.
>
> There's a good discussion of the issues involved in my LCA 2006
> presentation.... which doesn't seem to be on the LCA 2006 site. Hrm.
> I'll have to ask that this be fixed. In any case, here it is:
>
> http://thunk.org/tytso/forkdepot.odp

The main difference appears to be the potential size. Both extended
attributes and forks allow for extra data that I neither want or need.
But once the extra space is large enough to hide a rootkit in, it
becomes a security problem instead of just something pointless.

Pointless here means that _I_ don't see the point. Maybe there are
valid uses for extended attributes. If there are, noone has explained
them to me yet.

Jörn

--
They laughed at Galileo. They laughed at Copernicus. They laughed at
Columbus. But remember, they also laughed at Bozo the Clown.
-- unknown
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