Re: udev on Fedore 5 - Gentoo script not very helpfull in LFS

[Piet Delaney <piet@bluelane.com>]

On Fri, 2006-08-04 at 17:13 -0700, Dan Nicholson wrote:

Hi Dan:

> On 8/4/06, Piet Delaney <piet@bluelane.com> wrote:
> > On Fri, 2006-08-04 at 08:12 -0700, Dan Nicholson wrote:
> > >
> > > 6.2 is out now. Here's the book and the bootscripts directly.
> > >
> > > http://www.linuxfromscratch.org/lfs/view/stable/
> > > http://wiki.linuxfromscratch.org/lfs/browser/tags/6.2/bootscripts/lfs/init.d/udev?revw62
> > > http://wiki.linuxfromscratch.org/lfs/browser/tags/6.2/bootscripts/lfs/init.d/udev_retry?revw62
> >
> > I'm Having better luck with udev-056, MUCH faster with 2.6.13 kernel
> > than udev-030. Majors and Minors are identical. Permissions are
> > derived from the Original udev permissions and likely the original
> > LFS permissions.
> 
> By permissions I assume you mean the rules files.

Well..., yes. It seems between 030 and 056 the permissions directory
support was dropped yet lots of examples existed and it appears to
parse it in the log so it's hidden in the noise that the changing
of permissions is now done in the rules files. Even the udev 
Change log doesn't indicate this.


>                                                  The udev rules have
> jumped around a bit. They've only come under version control in the
> past few months. Here's the rules and bootscripts from 6.1.1, which
> used udev-056 and linux-2.6.12.
> 
> http://downloads.linuxfromscratch.org/udev-config-4.rules
> http://downloads.linuxfromscratch.org/lfs-bootscripts-3.2.1.tar.bz2

Thanks. I've been using the udev-config-4.rules and it bring us closer
to our previous permissions. It seems there was yet another undocumented
change. The config files:

	# default_mode - set the default mode for all nodes that have no
	#                explicit match in the permissions file
	default_mode="0600"

is no longer supported. The Change log only indicates it's being
supported way back when udev started to exist. So many permissions
with your LFS udev-config-4.rules still leave difference from our
previous environment. Many appear to be a consistent difference between
default permissions. Many of our files have permissions 600 and are
now coming up 660. I think this is likely because default_mode="0600"
is now ignored in the config file.

Might be best to try two versions of udev-config-4.rules, one with the
way they exist in the 6.1.1 release and another that beings us closer
to the permissions we are using from 6.1 (or earlier).

Any thoughts on that. You may be in a great position to know which
environment be best. Using the stock udev-config-4.rules from 6.1.1
would likely make future migration to 6.2 easier. Modifying the
udev-config-4.rules to give the same permissions we use now with
6.1 would likely minimize risk of our appliance behavior changing.

I haven't seen anything in your /lfs-bootscripts-3.2.1.tar that
changes files modes in /dev.

-piet
	
> 
> I think you can also safely update to udev-071 with the same setup.
> Read the NEWS and README in udev. It's noted when things become
> incompatible such as kernel version needed, or a tool going away, like
> udevstart.
> 
> --
> Dan
-- 
Piet Delaney
BlueLane Teck
W: (408) 200-5256; piet@bluelane.com
H: (408) 243-8872; piet@piet.net



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