[gentoo-embedded] udev

[gentoo-embedded] udev

[Morgan, Austin D.]

Is anyone useing udev in their embedded systems?  If not what has become the
defacto standard for filling /dev?  I hate to manually create all the nodes
although it is probably the most efficient use of space.

Austin Morgan 

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Re: [gentoo-embedded] udev

[Henrik Brix Andersen]

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On Tue, Jun 20, 2006 at 02:00:54PM -0700, Morgan, Austin D. wrote:
> Is anyone useing udev in their embedded systems?  If not what has become the
> defacto standard for filling /dev?  I hate to manually create all the nodes
> although it is probably the most efficient use of space.

You don't need to create them manually - you can 'emerge sys-fs/static-dev' :)

Regards,
Brix
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Henrik Brix Andersen <brix@gentoo.org>
Gentoo Metadistribution | Mobile computing herd

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Re: [gentoo-embedded] udev

[Natanael Copa]

On Tue, 2006-06-20 at 14:00 -0700, Morgan, Austin D. wrote:
> Is anyone useing udev in their embedded systems?  If not what has become the
> defacto standard for filling /dev?  I hate to manually create all the nodes
> although it is probably the most efficient use of space.

I am using udev. When I get time I will look at how to replace it with
busybox's mdev.

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Natanael Copa

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Re: [gentoo-embedded] udev

[Anish Patel]

no, i use mdev, its pretty easy to setup and get goin and pretty 
light-weight

----- Original Message ----- 
From: "Morgan, Austin D." <AUSTIN.D.MORGAN@saic.com>
To: <gentoo-embedded@lists.gentoo.org>
Sent: Tuesday, June 20, 2006 5:00 PM
Subject: [gentoo-embedded] udev


>
> Is anyone useing udev in their embedded systems?  If not what has become 
> the
> defacto standard for filling /dev?  I hate to manually create all the 
> nodes
> although it is probably the most efficient use of space.
>
> Austin Morgan
>
> -- 
> gentoo-embedded@gentoo.org mailing list
> 

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Re: [gentoo-embedded] udev

[Ned Ludd]

On Tue, 2006-06-20 at 23:14 +0200, Natanael Copa wrote:
> On Tue, 2006-06-20 at 14:00 -0700, Morgan, Austin D. wrote:
> > Is anyone useing udev in their embedded systems?  If not what has become the
> > defacto standard for filling /dev?  I hate to manually create all the nodes
> > although it is probably the most efficient use of space.
> 
> I am using udev. When I get time I will look at how to replace it with
> busybox's mdev.

mdev is the route to go for dynamic device nod creation for 
embedded/busybox 2.6 based systems. but be sure you still have 
the base nods urandom,zero,stdin,stdout,stderr,null,ttyS0 there anyway.

Example conf used when I initially slapped the conf logic together.
Not sure how much Rob changed it however from where I left off. 
I think he only extended on it allow it to shell out etc..
http://tinderbox.dev.gentoo.org/misc/mdev.conf


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Ned Ludd <solar@gentoo.org>
Gentoo Linux

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RE: [gentoo-embedded] udev

[Morgan, Austin D.]

That is exacctly what I was looking for.  Thank you very much.  The problem
with a swiss-army knife is sometimes it is hard to figure out what all tools
are included.

Austin


-----Original Message-----
From: gentoo-embedded+bounces-919-AUSTIN.D.MORGAN=saic.com@gentoo.org on
behalf of Ned Ludd
Sent: Tue 6/20/2006 4:27 PM
To: gentoo-embedded@lists.gentoo.org
Subject: Re: [gentoo-embedded] udev
 
On Tue, 2006-06-20 at 23:14 +0200, Natanael Copa wrote:
> On Tue, 2006-06-20 at 14:00 -0700, Morgan, Austin D. wrote:
> > Is anyone useing udev in their embedded systems?  If not what has become
the
> > defacto standard for filling /dev?  I hate to manually create all the
nodes
> > although it is probably the most efficient use of space.
> 
> I am using udev. When I get time I will look at how to replace it with
> busybox's mdev.

mdev is the route to go for dynamic device nod creation for 
embedded/busybox 2.6 based systems. but be sure you still have 
the base nods urandom,zero,stdin,stdout,stderr,null,ttyS0 there anyway.

Example conf used when I initially slapped the conf logic together.
Not sure how much Rob changed it however from where I left off. 
I think he only extended on it allow it to shell out etc..
http://tinderbox.dev.gentoo.org/misc/mdev.conf


-- 
Ned Ludd <solar@gentoo.org>
Gentoo Linux

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Re: [gentoo-embedded] udev

[Natanael Copa]

On Tue, 2006-06-20 at 17:27 -0400, Ned Ludd wrote:
> On Tue, 2006-06-20 at 23:14 +0200, Natanael Copa wrote:
> > On Tue, 2006-06-20 at 14:00 -0700, Morgan, Austin D. wrote:
> > > Is anyone useing udev in their embedded systems?  If not what has become the
> > > defacto standard for filling /dev?  I hate to manually create all the nodes
> > > although it is probably the most efficient use of space.
> >
> > I am using udev. When I get time I will look at how to replace it with
> > busybox's mdev.
> 
> mdev is the route to go for dynamic device nod creation for
> embedded/busybox 2.6 based systems. but be sure you still have
> the base nods urandom,zero,stdin,stdout,stderr,null,ttyS0 there anyway.

I needed those before udev got started to so thats no difference.

> Example conf used when I initially slapped the conf logic together.
> Not sure how much Rob changed it however from where I left off.
> I think he only extended on it allow it to shell out etc..
> http://tinderbox.dev.gentoo.org/misc/mdev.conf

Thank you very much! I really appreciated that one.

How does it work with hotplugging? I currently use:

echo /sbin/udevsend > /proc/sys/kernel/hotplug

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Natanael Copa

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Re: [gentoo-embedded] udev

[Mike Frysinger]

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On Tuesday 20 June 2006 18:06, Natanael Copa wrote:
> How does it work with hotplugging? I currently use:
>
> echo /sbin/udevsend > /proc/sys/kernel/hotplug

yes, you should be able to echo mdev there instead
-mike

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