Re: udev - TODO update

[Greg KH <greg@kroah.com>]

On Fri, Feb 13, 2004 at 12:45:38AM +0100, Kay Sievers wrote:
> 
> Here a few questions about my favorite file in the tree :)
> 
> 
> - better partition support (it's a hack right now, maybe new libsysfs changes
>   can help out a lot here.)
> 
> It's done with Ananth's patches, right?

I think so, yes.

> - option to always add all partitions.  This is needed to properly handle
>   devices with removable media.
> 
> Sounds soooo... ugly, but seems we should do it. Any idea which direction?

I think a config option.  If set, we ignore the partition devices, and
just create every possible partition when we see the "main" block
device.  This is needed for removable media devices.

I agree it is ugly, but if anyone else can come up with an idea?

> - allow database to be queried by other programs
> 
> Is udevinfo enough, or do we need something more?

I think udevinfo is enough for now.  Anyone else feel a need for more?

> - split program into two pieces (daemon and helper that sends events to it).
>   This will allow us to keep track of sequences, and lots of other needed
>   stuff.
> 
> It's done, I think :)

Heh, yes, thanks a lot.

> - keep track of current permissions on devices when daemon shuts down.
> 
> Hmm, what is this?

When the /etc/init.d/udev script shuts down we need to save any
permission changes that have been done to the device nodes.  That way a
user can do:
	chmod 666 /dev/ttyUSB1
and we will pick this change up the next time we boot up.

Perhaps just a wrapper script:
	udevinfo chmod 666 /dev/ttyUSB1
that could also catch the change and write it to the permissions file.
But I don't think people will really go for that one.

It would be good to see how Gentoo handles this as I think they tar up
everything right now on system shutdown.  I'm trying to install it on a
spare laptop and stuck in build hell right now, so it will probably be a
few days...

> - better permission handling
> 
> What is missing here?

I don't know for sure.  Just a vague feeling that the way we currently
handle permissions is pretty lousy.  Anyone else feel this way too?

thanks,

greg k-h


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