Re: [uml-devel] [PATCH] RFC allow PTRACE_SYSCALL to selectively skip syscalls

[Blaisorblade <blaisorblade@yahoo.it>]

On Friday 19 May 2006 16:09, Blaisorblade wrote:
> That is more or less my idea, however I've not had the time to work on it.
> Instead of changing the semantics we must add another option - I thought to
> use a ptrace option (the ones you set with PTRACE_SETOPTIONS), Charles
> Wright coded instead a PTRACE_CHECKEMU, but this is the concept.

> So, I'm going to forward you the emails containing two patches:
> *) PTRACE_CHECKEMU from Charles Wright
> *) PTRACE_SYSCALL_MASK - to make the debugger be notified only of some
> syscalls; the only check is via syscall number though. It's unrelated to
> this but probably useful to you.

> And I'm attaching my original version of the PTRACE_CHECKEMU thing

There's yet another implementation of this; look at the first 4 threads of 
this page -  Renzo Davoli posted a set of 3-patches which include his 
PTRACE_SYSVM which has also this feature.

http://marc.theaimsgroup.com/?a=106901060200003&r=1&w=2
-- 
Inform me of my mistakes, so I can keep imitating Homer Simpson's "Doh!".
Paolo Giarrusso, aka Blaisorblade (Skype ID "PaoloGiarrusso", ICQ 215621894)
http://www.user-mode-linux.org/~blaisorblade

	

	
		
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