linux-kernel - Re: Modern 2.6 kernels - Notification for changing hostname from proc/sys/kernel/hostname ?

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Date:	Tue, 20 May 2008 00:45:35 +0400
From:	Alexey Dobriyan <adobriyan@...il.com>
To:	Shawn Starr <shawn.starr@...ers.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Modern 2.6 kernels - Notification for changing hostname from
	proc/sys/kernel/hostname ?

On Mon, May 19, 2008 at 01:16:12PM -0400, Shawn Starr wrote:
> I was looking at utsname_sysctl.c (if this is the right place) and noticed 
> there doesn't seem to be any notification via the connector bus to tell 
> userspace the hostname has changed? Is this correct?

Yes. No notifications.

> if so, would not not make sense to add such event triggers so that things like 
> KDE would not have to poll to determine if the hostname changes and instead 
> had D-BUS tell userspace the hostname changed?

Why does it want to know if and when hostname changes?

> Perhaps this could be applied to other values (where applicable) 
> in /proc/sys/kernel?

Probably, what other stuff desktop crowd wants?

> Or is this all going to go into sysfs eventually (where some of this really 
> might belong)

Hopefully, not. There is already uname(2), sysctls -- proc and binary,

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