From: Kay Sievers <kay.sievers@vrfy.org>
To: linux-hotplug@vger.kernel.org
Subject: Re: uDev/ hotplug and modules
Date: Fri, 18 Nov 2005 02:26:20 +0000 [thread overview]
Message-ID: <20051118022620.GA29322@vrfy.org> (raw)
In-Reply-To: <B6AD7C79BC8ECA49A2F11C7B3839BF4902FFF0C0@pdxwin32.pixelworks.com>
On Thu, Nov 17, 2005 at 06:13:43PM -0800, Don Nelke wrote:
> Does udev (075) and hotplug work without loadable modules?
It should.
> It seems hotplug is working but udevsend is seg-faulting when invoked in
> lieu of the /sbin/hotplug script.
I don't think this happens with a normal kernel. I'm sure someone else
would have noticed it.
> I replaced the call to /sbin/hotplug in the kobject_hotplug function.
> The path was hard-coded in our version. I was thinking this was wrong;
> shouldn't this be using the contents of /proc/sys/kernel/hotplug?
Are you talking about the kernel source? Sure, the event helper is set by
writing to /proc/sys/kernel/hotplug. What the hell is "our version" and
who is doing such a nonsense?
> The object of this effort is to be able to detect when a usb-storage
> device is present on boot-up and to mount the device fs. It seems that
> udev was the answer since it gives a dynamic node creation if the device
> is detected. All a script has to do is check for that node. Is my
> understanding correct?
You can hook into any event device event the kernel sends. Just match
with a udev rule against device properties the kernel exports and call
a script or program with the RUN key.
Kay
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prev parent reply other threads:[~2005-11-18 2:26 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-11-18 2:13 uDev/ hotplug and modules Don Nelke
2005-11-18 2:26 ` Kay Sievers [this message]
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