[PATCH libdrm] xf86drm: fallback to normal path when realpath fails

[Michel Dänzer]

On 2018-08-23 12:04 p.m., Emil Velikov wrote:
> From: Emil Velikov <emil.velikov at collabora.com>
> 
> Earlier commit reworked our sysfs handling to use realpath.
> Sadly that backfired since the Firefox sandboxing mechanism rejects
> that. Despite the files/folders being in the allowed list, of the
> sandboxing mechanism.

>From the Firefox bug report, the problem was stat on the top-level /sys
directory.


> Oddly enough, the Chromium sandboxing doesn't complain about any of
> this.
> 
> Since there are no Firefox releases with the fix, add a temporary
> solution which falls back to the original handling.
> 
> Sadly, this won't work for virgl.
> 
> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107516
> Cc: Michel Dänzer <michel.daenzer at amd.com>
> Cc: Mike <bugs.freedesktop.org at pm.port0.org>
> Fixes: a02900133b3 ("xf86drm: introduce a get_real_pci_path() helper")
> Signed-off-by: Emil Velikov <emil.velikov at collabora.com>

Reviewed-by: Michel Dänzer <michel.daenzer at amd.com>
Tested-by: Michel Dänzer <michel.daenzer at amd.com>


Thanks Emil!


-- 
Earthling Michel Dänzer               |               http://www.amd.com
Libre software enthusiast             |             Mesa and X developer