Jeff Dike wrote:
> Below is a small patch to ptrace which enables it to change system call
> numbers. This is needed in order to run the user-mode port.
>
> It adds range checks to ptrace and to the slow system call path.
>
> I've been feeding this sporadically to Linus for the last couple of months
> with no result. If anyone can clue me in as to what would make this more
> acceptable, please do so.
This patch also enables a feature in strace that lets it trace child
processes spawned by vfork(). I am strongly in favor of its inclusion.
I have been running an equivalent patch through several versions of
2.2.x for some months and have experienced absolutely no ill effects.
--Nate Eldredge neldredge@hmc.edu
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