Messages in this thread | | | Date | Mon, 29 Dec 2008 14:23:05 +0100 | From | Oleg Nesterov <> | Subject | Re: [RFC][PATCH] Notify init when processes are reparented to it |
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On 12/29, Scott James Remnant wrote: > > On Sun, 2008-12-28 at 14:01 -0800, Roland McGrath wrote: > > > I'm highly skeptical that this is a desireable feature at all, and > > certainly I find the abuse of siginfo_t.si_status here extremely > > questionable. I think we need a clear explanation of what problems > > the feature is intended to address. > > > Did the original e-mail not address this?
Do you mean
[RFC] Notify init when processes are reparented to it http://marc.info/?l=linux-kernel&m=123038049428388
?
I am not sure I really understand the problem. And thus I can't understand how this patch can help.
OK,
> We want to be able to supervise daemons.
What do you mean?
> Later on, 1002 will die and init will receive SIGCHLD for it. > > Unfortunately neither the 1001 or 1002 processes are known to init, even > though they are original children of the process it spawned (1000), for > init to be notified about them - this has been forgotten.
Ok, with this patch /sbin/init knows that 1002 is a descendant of apache(1000) which was spwaned by init. What can init do with this info?
To clarify, I am not arguing, I am just trying to understand.
Oleg.
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