What does LAV_CURRENT mean backwards compatibility of LD_AUDIT interface?

[Carlos O'Donell]

On 03/19/2015 05:00 PM, Roland McGrath wrote:
> That wording says to me that no actual binary compatibility between
> versions of the interface is required beyond the la_version interface being
> there in every version.  Once la_version has returned, rtld knows what
> version of the interface that module supports and so the set of other
> symbols it looks up and the ABI for each can depend on that.  A newer rtld
> is obliged to keep supporting older versions of the interface when such a
> version number is returned by a module's la_version.  But that in no way
> means that a new version must be a superset of its predecessor or anything
> like that.  Am I missing something?

No, I think you're on point with that suggestion.

I had simply not envisaged that as a possible model.

In which case we need to, as Ben suggests, adjust our documentation and
that in the Linux kernel man pages to make this clear.

Cheers,
Carlos.