Rule for DV movie camera?

Rule for DV movie camera?

[gilles]

Hello.

When plugging a DV movie camera, information about it appears in /sys, e.g.
 $ ls -1F /sys/class/ieee1394_node/0800460102943773/device
0800460102943773-0/
bus_options
capabilities
detach_state
guid
guid_vendor_id
guid_vendor_oui
nodeid
tlabels_allocations
tlabels_free
tlabels_mask
vendor_id
vendor_name_kv
vendor_oui

But no /dev/raw1394, which is used by "dvgrab" to capture from the camera.
[There aren't any rules in "/etc/udev/rules.d" about ieee1394.]

I have udev 0.24 installed.

Thanks.

Gilles


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Re: Rule for DV movie camera?

[Kevin P. Fleming]

gilles@harfang.homelinux.org wrote:

>  $ ls -1F /sys/class/ieee1394_node/0800460102943773/device
> 0800460102943773-0/
> bus_options
> capabilities
> detach_state
> guid
> guid_vendor_id
> guid_vendor_oui
> nodeid
> tlabels_allocations
> tlabels_free
> tlabels_mask
> vendor_id
> vendor_name_kv
> vendor_oui

There is no dev file there, so udev is not aware that it needs to create 
a device node for this device.


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Re: Rule for DV movie camera?

[Greg KH]

On Wed, Jun 09, 2004 at 03:58:44PM +0200, gilles@harfang.homelinux.org wrote:
> 
> But no /dev/raw1394, which is used by "dvgrab" to capture from the camera.
> [There aren't any rules in "/etc/udev/rules.d" about ieee1394.]

That is because no one has converted the ieee1394 subsystem to export
"dev" files showing the major:minor numbers used by the devices.

Care to send a kernel patch to do so?

thanks,

greg k-h


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Re: Rule for DV movie camera?

[gilles]

[-- Attachment #1: Type: text/plain, Size: 159 bytes --]

> 
> Care to send a kernel patch to do so?
> 

Here is the answer/question I got from Ben Collins, in my trying to transfer
the burden over to him :-)

Gilles

[-- Attachment #2: Type: message/rfc822, Size: 3477 bytes --]

From: Ben Collins <bcollins@debian.org>
To: gilles@harfang.homelinux.org
Subject: Re: [greg@kroah.com: Re: Rule for DV movie camera?]
Date: Wed, 9 Jun 2004 20:00:39 -0400
Message-ID: <20040610000039.GH3595@phunnypharm.org>

On Thu, Jun 10, 2004 at 02:37:22AM +0200, gilles@harfang.homelinux.org wrote:
> Many thanks for quickly replying.
> 
> > > I would suppose that the missing information (the sysfs "dev" file) is a matter
> > > of adding a few lines in "drivers/ieee1394/nodemgr.c", 
> > 
> > NodeMgr isn't the proper place for this. The /dev/raw1394 device should
> > be done in raw1394.c driver. It already uses cdev, shouldn't that be
> > enough?
> >
> 
> I'm not the right person to answer this, unfortunately.  But here is a quote from
> Greg Kroah-Hartman, in a comment to a previous post by me:
> 
>     There is no /sys/cdev in the kernel anymore, thankfully :)
> 
> Although I couldn't share his feeling of relief, lacking knowledge on the subject, I'd
> assume that it seems to imply a "No".
> 
> Would you mind bringing the discussion over to "linux-hotplug-devel"?

I don't mind at all.

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