[meta-freescale] [meta-fsl-arm][PATCH v2] udev-extraconf: allow all users to use gpu

[Alexander Shashkevych]

>> If group "video" with 0660 permissions is more correct for graphic
>> devices, then we must to update all of them: /dev/fb*, /dev/mxc_*,
>> /dev/dri/card*, because at the moment they all have 0666 permissions,
>> but groups are different.
>
> I think those belong to video group; this allow for a more safe
> application as it cannot exploit the user interface and mess up with
> fb area.

At the moment devices have a following permissions set by udev rule:

$ ls -l /dev/{fb,mcx,gal,dri/}*
crw-rw-rw-    1 root     video    Jan  1 00:00 /dev/dri/card0
lrwxrwxrwx    1 root     root     Jan  1 00:00 /dev/fb -> fb0
crw-rw-rw-    1 root     video    Jan  1 00:00 /dev/fb0
crw-rw-rw-    1 root     video    Jan  1 00:00 /dev/fb1
crw-rw-rw-    1 root     root     Jan  1 00:00 /dev/galcore
crw-------    1 root     root     Jan  1 00:00 /dev/mxc_asrc
crw-------    1 root     root     Jan  1 00:00 /dev/mxc_hdmi
crw-rw-rw-    1 root     root     Jan  1 00:00 /dev/mxc_ipu
crw-rw-rw-    1 root     root     Jan  1 00:00 /dev/mxc_vpu

Part of devices belong to "video" and part to "root" groups, but most
of them have permissions granted to all users. This definitely
violates security. If nobody has objections, then we could ask Andreas
to send a new patch with correct permissions and groups.

PS: If Andreas no longer interested with this patch, then I can take it up.

-- 
Regards,
Alexander