Re: scsi indom in linux PMDA - issues!

[Ken McDonell <kenj@xxxxxxxxxxxxxxxx>]

On 22/01/15 03:21, Frank Ch. Eigler wrote:
> ...
> Sorry, to some extent I was conflating the __pmHash* stuff in
> pmdas/linux_proc, where the case is even more clear-cut.  We use
> lookup tables of both sorts for much more than externally-visible
> API-dicated-persistentish number<->string mappings.
>
> They are used as a place to hang off (via the void* data/private
> fields) all kinds of extra stuff, like metric values fetched sometime
> in the past, whether they were requested or not (=> leading to
> inflated syscall traffic), regardless of whether a future pcp-fetcher
> will have access permissions or not (=> leading to security bugs).
> That's the problem I'm hoping to fix.
*nod* ... these are examples of hijacking the pmdaCache API for purposes 
beyond the original intent and warranty obligations.
Thanks for the clarification Frank, I think we're on the same page here.