Why I can't trace linux process's childs with truss?

[Alexander Kabaev]

On Fri, 10 Sep 2010 14:15:17 -0700
Garrett Cooper <gcooper at FreeBSD.org> wrote:

> On Fri, Sep 10, 2010 at 12:07 PM, Yuri <yuri at rawbw.com> wrote:
> > I am trying to get the log of all system calls that skype makes
> > with truss -f /usr/local/share/skype/skype
> > For some reason the resulting log only has the leading process
> > calls and nothing from it's 8 childs.
> > Truss doesn't show any 'cloned' processes. Is this a bug in truss
> > that it doesn't follow 'cloned' processes?
> >
> > Is there any workaround or other way I can debug skype? strace
> > doesn't work on amd64.
> > I am primarily interested why it can't read /dev/video0 device,
> > created by webcamd.
> 
> It doesn't look like ptrace support has been added into the
> linuxulator, yet.. but I could be wrong.
> -Garrett

You are. ptrace is supported by linuxulator for a while now. The
originator problem is likely because he is trying truss, which is not
Linux-aware. ktrace/linux_kdump combo should work.

-- 
Alexander Kabaev
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