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List:       gentoo-dev
Subject:    Re: [gentoo-dev] Testing to see if services have crashed on
From:       Fabian Groffen <grobian () gentoo ! org>
Date:       2008-03-25 19:45:26
Message-ID: 20080325194526.GT831 () gentoo ! org
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On 21-03-2008 12:07:24 +0000, Roy Marples wrote:
> On Friday 21 March 2008 10:37:11 Fabian Groffen wrote:
> > Assuming you would use libkvm, on Darwin this means as unprivileged user
> > (not using suid) you can't see any processes at all.
> 
> That's different from FreeBSD and NetBSD then.

Indeed.  And I just found out that Leopard (10.5) dropped the entire kvm
which wasn't working to funky anyway.  I just made some implementation
of walking through all running processes for portage-utils' `qlop -c`
using sysctl calls -- the way to do it on Darwin, and that works even as
normal unprivileged user, so I guess we can just use that.

> > Is there a way to just have some fallback method which is less
> > functional, but just uses some pid file with a lock or something?
> 
> Not all services use pidfiles. Also, some services re-fork and re-write their 
> pidfiles and I'm not sure the lock would carry across in that instance.

I was thinking of a wrapping process, but I only later realised that
this isn't working since many/most daemons fork into the background, so
you loose the control over it anyway.


-- 
Fabian Groffen
Gentoo on a different level
-- 
gentoo-dev@lists.gentoo.org mailing list

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