Bug#827335: evince: assertion failed: (wayland_display->cursor_theme_name)

[Diane Trout]

> It's aborting because loading the cursor theme is failing for some
> reason.  And this may be a wild guess, but can you check permissions
> on
> $XDG_RUNTIME_DIR ?  You'll need write access to that directory.
> 

Apparently I should have remembered that I was running under apparmor
as well as wayland.

I put evince in complain mode and saw this:

[134561.048582] audit: type=1400 audit(1476207699.328:1487):
apparmor="ALLOWED" operation="mknod" profile="/usr/bin/evince"
name="/run/user/1000/weston-shared-AiELNF" pid=9537 comm="evince"
requested_mask="c" denied_mask="c" fsuid=1000 ouid=1000
[134561.048591] audit: type=1400 audit(1476207699.328:1488):
apparmor="ALLOWED" operation="open" profile="/usr/bin/evince"
name="/run/user/1000/weston-shared-AiELNF" pid=9537 comm="evince"
requested_mask="rwc" denied_mask="rwc" fsuid=1000 ouid=1000
[134561.048601] audit: type=1400 audit(1476207699.328:1489):
apparmor="ALLOWED" operation="unlink" profile="/usr/bin/evince"
name="/run/user/1000/weston-shared-AiELNF" pid=9537 comm="evince"
requested_mask="d" denied_mask="d" fsuid=1000 ouid=1000
[134561.048663] audit: type=1400 audit(1476207699.328:1490):
apparmor="ALLOWED" operation="truncate" profile="/usr/bin/evince"
name="/run/user/1000/weston-shared-AiELNF" pid=9537 comm="evince"
requested_mask="w" denied_mask="w" fsuid=1000 ouid=1000

I'm assuming the token at the end of the file name is a a random
string.

I made the change below to /etc/apparmor.d/usr.bin.evince and tested it
first with rwl and then rw (both of which worked).

Diane

--- debian/evince/etc/apparmor.d/usr.bin.evince	2016-10-10
23:32:09.826405495 -0700
+++ /etc/apparmor.d/usr.bin.evince	2016-10-11 10:45:06.401131452
-0700
@@ -65,8 +65,9 @@
   owner @{HOME}/** rw,
   owner /media/**  rw,
   owner @{HOME}/.local/share/gvfs-metadata/** l,
   owner /{,var/}run/user/*/gvfs-metadata/** l,
+  owner /{,var/}run/user/*/weston-shared-* rw,
 
   owner @{HOME}/.gnome2/evince/*       rwl,
   owner @{HOME}/.gnome2/accels/        rw,
   owner @{HOME}/.gnome2/accelsevince   rw,