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Re: Multi-archive Contexts: Some PCP Tools Lost in Time

To: Dave Brolley <brolley@xxxxxxxxxx>
Subject: Re: Multi-archive Contexts: Some PCP Tools Lost in Time
From: "Frank Ch. Eigler" <fche@xxxxxxxxxx>
Date: Tue, 16 Feb 2016 14:43:48 -0500
Cc: PCP Mailing List <pcp@xxxxxxxxxxx>
Delivered-to: pcp@xxxxxxxxxxx
In-reply-to: <56C37828.10007@xxxxxxxxxx>
References: <56C3608E.9090404@xxxxxxxxxx> <y0mvb5oa323.fsf@xxxxxxxx> <56C37828.10007@xxxxxxxxxx>
User-agent: Mutt/1.4.2.2i
Hi -

On Tue, Feb 16, 2016 at 02:27:36PM -0500, Dave Brolley wrote:
> [...]
> The problem is that these tools are not using such functions. They are 
> pawing around in the data structures directly.

Sure, but they must have called -some- functions in order to get
access to those data structures.  So the idea is to investigate
whether those functions might be interposed to prevent erroneous
access.

For example, we could disable __pmHandleToPtr() when coming in from
older binaries.

- FChE

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