From: Chris Friesen <cfriesen@nortelnetworks.com>
To: Werner Almesberger <wa@almesberger.net>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: anyone ever implemented a reparent(pid) syscall?
Date: Mon, 12 May 2003 10:03:04 -0400 [thread overview]
Message-ID: <3EBFA998.7010401@nortelnetworks.com> (raw)
In-Reply-To: 20030512043343.A1861@almesberger.net
Werner Almesberger wrote:
> You'd still have a PID reuse race. Of course, you could also
> cover this by checking the process' start time ...
Good point. It is unlikely this will happen in our scenario (very long-lived
processes), but we should certainly cover that case.
> But just designing the parent to be simple enough to be reliable
> and/or generic enough that it doesn't even need to be upgraded
> still looks like a more promising approach to me.
That would be the simple solution. However, it doesn't cover the case of a
cosmic ray causing a segfault, or the OOM killer coming along, or root
accidentally doing a kill -9 on the wrong pid, or other similar issues.
Chris
--
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prev parent reply other threads:[~2003-05-12 13:50 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-05-09 18:54 anyone ever implemented a reparent(pid) syscall? Chris Friesen
2003-05-10 9:39 ` Werner Almesberger
2003-05-12 3:23 ` Chris Friesen
2003-05-12 7:33 ` Werner Almesberger
2003-05-12 14:03 ` Chris Friesen [this message]
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