Re: udev and dbus

[Kay Sievers <kay.sievers@vrfy.org>]

On Thu, 2004-03-11 at 19:47, Greg KH wrote:
> On Thu, Mar 11, 2004 at 07:37:16PM +0100, Kay Sievers wrote:
> > On Thu, 2004-03-11 at 19:32, Greg KH wrote:
> > > On Thu, Mar 11, 2004 at 07:12:55PM +0100, Kay Sievers wrote:
> > > > Something like this:
> > > > "Nice, I can mount my USB-stick with udev.d/ right after udev has
> > > > created my partition node, cause the scsi.agent was too fast..."
> > > 
> > > No, how can scsi.agent know about what the device node name was?  It
> > > can't.
> > 
> > udevinfo! That's what it's made for :)
> 
> udevinfo will not work for a device node that has just gone away :(

Why should scsi.agent ask for names on 'remove' events? 

> > > Lots of people have been asking me about the ability to run "post" type
> > > scripts after udev has named the device (or removed it.)  With this
> > > proposal, people could get those udev messages easily (actually multiple
> > > people could, which is even better.)  It would also allow us to rip out
> > > both the SELinux and DBUS code from udev itself and implement those with
> > > /etc/udev.d/ programs instead.
> > 
> > Yes, perfectly right, but we can do it with /sbin/hotplug.
> > Just make udevsend not return until the nodes are created.
> > And then call anything you like.
> 
> But this would involve changing the hotplug scripts to call udevsend
> first, right?  That's a policy decision I can make as a developer of the
> hotplug scripts, but one that I don't think is very fair to other
> projects that use the hotplug scripts.

The /etc/hotplug.d/* is almost empty so it isn't really unfair. Only the
old hotplug.default and udevsend is in there. And this change is only
needed if you actually use udev.

thanks,
Kay



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