[Webkit-unassigned] [Bug 178896] [WPE] Can't run dyz

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Mon Oct 30 08:06:22 PDT 2017


--- Comment #7 from Adrian Perez <aperez at igalia.com> ---
(In reply to Michael Catanzaro from comment #5)
> It looks like the group membership is not needed, at least not on Fedora,
> due to the its:
> $ getfacl renderD128 
> # file: renderD128
> # owner: root
> # group: video
> user::rw-
> user:mcatanzaro:rw-
> group::rw-
> mask::rw-
> other::---

In my case I had already noticed this, and using ACLs is fine. Most
modern GNU/Linux have been using ACLs since tmpfs/devtmpfs gained
support for them a few years ago.

> Not sure what sets that up, but whatever. So the remaining question is: why
> does /dev/dri/controlD64 not exist?

Some time ago this device node from the DRM subsystem was renamed to
“cardX”, so the “/dev/dri/card0” is what is used nowadays. If you look
under “/sys” the kernel still advertises “controlD64” as a symlink to

  % ls -l /sys/class/drm/card0/device/drm/controlD64 
  lrwxrwxrwx 1 root root 0 oct 30 16:57 /sys/class/drm/card0/device/drm/controlD64 -> card0/

I tried to symlink “/dev/dri/controlD64 -> “/dev/dri/card0” to no avail.

(BTW, if the WebKit or WPE code has “controlD64” hardcoded somewhere,
well then we should fix it, but I doubt that's the case ;-D)

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