Re: utrace vs. ptrace

[Arjan van de Ven]

On Thu, 2006-07-13 at 15:34 +0200, Andi Kleen wrote:
> On Thursday 13 July 2006 15:28, Arjan van de Ven wrote:
> > 
> > > That said extended core dumping (e.g. automatic processing of the output) 
> > > in user space makes sense. I had a prototype for that once that uploaded
> > > a simple crash report to a web 
> > 
> > the script I use for that is at
> > http://www.fenrus.org/bt.sh
> > 
> > it tries to include things like rpm versions of the package it was in
> > etc, and suggests/downloads the right debuginfo rpms to improve the
> > backtrace. Clearly that's all userspace stuff; but it can run from a
> > daemon easily; eg have all core dumps go to a special directory where
> > the daemon reaps them and analyzes.
> 
> You can't do that right now because core_pattern doesn't support slashes.
> The coredumps will be always all over the fs or not be there at all
> if the cwd is write protected.

are you sure? I had this working in the 2.6.9 timeframe, I could set
core pattern to /tmp/corefiles/core and such just fine..
(and the core files ended up in the /tmp/corefiles/ directory as well)

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