Hi Mulyadi,

You were right.   I found this code, which is called from
ptrace_attach function:

http://lxr.free-electrons.com/source/kernel/ptrace.c#L41

Thanks :)

On 27 February 2012 08:45, Vimal [off-list ref] wrote:

Hi Mulyadi,

On 26 February 2012 23:48, Mulyadi Santosa [off-list ref] wrote:

quoted

I am bit rusty here, but AFAIK sigchld is thrown to the process who
ptrace another process. CMIIW

sigchld's definition [1] says it's sent to the parent process when a
child terminates.

But I do agree that the notion of a parent seems a bit ambiguous when
a process is being ptraced.

ptrace is what I found when looking through some websites, and you may
very well be correct. ? But as always, it is good to confirm through
code. :) ? Let me try checking the ptrace functions.

Thanks!
--
Vimal

-- 
Vimal