kernel config requirements

kernel config requirements

[juuso.alasuutari]

Are there any specific kernel config option requirements for using udev? The
page at kernel.org just mentions 2.6 as an overall requirement. I googled a bit
and found some mentions about udev needing ramfs, but those were old articles. I
couldn't even find a ramfs config option in my kernel (2.6.17).

Juuso Alasuutari

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Re: kernel config requirements

[Guennadi Liakhovetski]

On Mon, 17 Jul 2006, juuso.alasuutari@tamperelainen.org wrote:

> Are there any specific kernel config option requirements for using udev? The
> page at kernel.org just mentions 2.6 as an overall requirement. I googled a bit
> and found some mentions about udev needing ramfs, but those were old articles. I
> couldn't even find a ramfs config option in my kernel (2.6.17).

CONFIG_HOTPLUG=y

Regards
Guennadi
---------------------------------
Guennadi Liakhovetski, Ph.D.
DSA Daten- und Systemtechnik GmbH
Pascalstr. 28
D-52076 Aachen
Germany

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Re: kernel config requirements

[Greg KH]

On Tue, Jul 18, 2006 at 08:39:47AM +0200, Guennadi Liakhovetski wrote:
> On Mon, 17 Jul 2006, juuso.alasuutari@tamperelainen.org wrote:
> 
> > Are there any specific kernel config option requirements for using udev? The
> > page at kernel.org just mentions 2.6 as an overall requirement. I googled a bit
> > and found some mentions about udev needing ramfs, but those were old articles. I
> > couldn't even find a ramfs config option in my kernel (2.6.17).
> 
> CONFIG_HOTPLUG=y

and:
	CONFIG_NET=y
	CONFIG_UNIX=y

thanks,

greg k-h

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Re: kernel config requirements

[juuso.alasuutari]

Quoting Greg KH <greg@kroah.com>:

> On Tue, Jul 18, 2006 at 08:39:47AM +0200, Guennadi Liakhovetski wrote:
> > On Mon, 17 Jul 2006, juuso.alasuutari@tamperelainen.org wrote:
> >
> > > Are there any specific kernel config option requirements for using udev?
> The
> > > page at kernel.org just mentions 2.6 as an overall requirement. I googled
> a bit
> > > and found some mentions about udev needing ramfs, but those were old
> articles. I
> > > couldn't even find a ramfs config option in my kernel (2.6.17).
> >
> > CONFIG_HOTPLUG=y
>
> and:
> 	CONFIG_NET=y
> 	CONFIG_UNIX=y
>
> thanks,
>
> greg k-h
>

What does udev need the networking option for? How about boxes without
networking, will udev not work on them? (Or does this config option refer to a
more basic class of networking than the one that has to do with ethernet wires
etc.?)

Juuso

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Re: kernel config requirements

[Greg KH]

On Thu, Jul 20, 2006 at 01:16:13AM +0300, juuso.alasuutari@tamperelainen.org wrote:
> Quoting Greg KH <greg@kroah.com>:
> 
> > On Tue, Jul 18, 2006 at 08:39:47AM +0200, Guennadi Liakhovetski wrote:
> > > On Mon, 17 Jul 2006, juuso.alasuutari@tamperelainen.org wrote:
> > >
> > > > Are there any specific kernel config option requirements for using udev?
> > The
> > > > page at kernel.org just mentions 2.6 as an overall requirement. I googled
> > a bit
> > > > and found some mentions about udev needing ramfs, but those were old
> > articles. I
> > > > couldn't even find a ramfs config option in my kernel (2.6.17).
> > >
> > > CONFIG_HOTPLUG=y
> >
> > and:
> > 	CONFIG_NET=y
> > 	CONFIG_UNIX=y
> >
> > thanks,
> >
> > greg k-h
> >
> 
> What does udev need the networking option for? How about boxes without
> networking, will udev not work on them? (Or does this config option refer to a
> more basic class of networking than the one that has to do with ethernet wires
> etc.?)

Yes, it deals with one more basic than ethernet.

udev needs it for the netlink socket that it listens to from the kernel.
If you don't have that, things don't work very well...

thanks,

greg k-h

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