Re: [gentoo-dev] strange gentoo shutdown sequence

[splite-gentoo@sigint.cs.purdue.edu]

On Sun, May 02, 2004 at 12:32:23PM -0500, William Hubbs wrote:
> Hi all,
> 
> On Sun, May 02, 2004 at 01:40:08PM +0200, Sven K?hler wrote:
> > hi,
> > 
> > gentoo usually does the following if i execute halt or reboot:
> > 
> > sending all processes the TERM signal
> > sending all processes the KILL signal
> > stopping xdm ...
> > stopping alsasound ...
> > etc....
> > 
> > in may eyes, this has to be the other way round:
> > first shutdown all deamons properly with the init.d-script, and than 
> > send the remaining processes the TERM and KILL signals.
> > 
> > 
> > why does gentoo handle things the way it does? redhat etc. do it the 
> > other way i described. using the init.d-script sounds more resonable to me.
> 
> I just confirmed this.  When you do a shutdown or a reboot or halt, the processes are killed by the kill and term signals before the services are actually stopped with the /etc/init.d/* scripts.
> 
> Is there a reason for this or should it be the other way around?

init(8) itself sends the TERM and KILL signals when changing runlevels, and
there's no way around that, save patching init.

It's not a real problem because init only signals processes still in init's
process group, and there usually aren't any.  (Run "ps -eo pid,pgrp,cmd" to
see if any are, if you're curious.)

"man init" for more info.

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