Tollef Fog Heen <tfh...@err.no> writes:

> Assuming it's small enough, using a pipe (or possibly a FIFO) could
> work.  That's kernel memory and iirc it won't be swapped out.  (I'm
> happy to be corrected on this, I'm basing it on what I've heard before
> and my recollection of it.)

There's a Kerberos ticket cache implementation (still a non-standard one,
though) that uses this mechanism since it even works across processes if
one is careful.  It's a really interesting trick, although it has a few
drawbacks.

-- 
Russ Allbery (r...@debian.org)               <http://www.eyrie.org/~eagle/>

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