Re: [PATCH] use uevents in udevd

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

On Fri, 2005-01-14 at 14:01 +0100, Hannes Reinecke wrote:
> Kay Sievers wrote:
> > On Fri, 2005-01-14 at 11:55 +0100, Hannes Reinecke wrote:
> > 
> >>Marco d'Itri wrote:
> >>
> >>>On Jan 14, Hannes Reinecke <hare@suse.de> wrote:
> >>>
> >>>
> >>>
> >>>>Comments welcome.
> >>>
> >>>Nice work.
> >>>How can the init scripts determine if support for uevents is available?
> >>>
> >>
> >>Good question. Asked myself the same one just now.
> >>I couldn't figure out whether this information is exported from the 
> >>kernel directly, so that leaves two possibilities:
> >>
> >>- check /proc/config.gz for CONFIG_KOBJECT_UEVENT
> >>   (if /proc/config.gz is available)
> >>- use a program to check for it (like the attached one).
> > 
> > 
> > Did you try the program on a kernel without uevents. I think you can
> > bind successful to all the 32 netlink sockets even without a "sender".
> > 
> 
> Great. You are correct.
> 
> What now?
> 
> Scanning /proc/config.gz is ugly.

We don't need to know that in advance it if we turn the other source of
events off if we get the first add/remove event from netlink. But yes,
we should think about exporting it somewhere.

Kay




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