[pvrusb2] sysfs, usdev and udevinfo

[Mike Isely]

On Mon, 21 Apr 2008, Bjorn Danielsson wrote:

> xavier.gnata at free.fr wrote:
> >[...]
> > The only pb is the /sys/.../pvrusb2/... owner is root. That is why I need udev
> > to change the permission.
> 
> I just started playing with the sysfs interface, and I tried the following
> approach for changing the permissions. Each time a video device is added
> (any video device) udev runs the following script that adds group-write
> permissions to the entire /sys/class/pvrusb2 tree.
> 
> #!/bin/sh
> GROUP=video
> CLASSDIR=/sys/class/pvrusb2
> if [ "$ACTION" = "add" -a -d $CLASSDIR ]; then
>     GLOB=$CLASSDIR/*/
>     chgrp -R $GROUP $GLOB
>     find $GLOB -perm -u+w -print | xargs chmod g+w
> fi
> 
> Not very elegant since it doesn't care about which device was attached,
> but it works.

Actually I think it's entirely appropriate that all video 
capture-related nodes like this be associated with the video group - so 
I think it's perfectly fine.  This is exactly what I was suggesting a 
long while back.  Thanks for figuring out the details!

  -Mike


-- 

Mike Isely
isely @ pobox (dot) com
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