From 60b7a7360895cfa999bc3e15d790557ae8cb0e95 Mon Sep 17 00:00:00 2001
From: Jonathan Lebon <jonathan@jlebon.com>
Date: Jan 29 2021 08:47:31 +0000
Subject: Don't trigger udev if socket doesn't exist


On rpm-ostree systems, we don't want scriptlets to affect the running
system because a major part of the value is "background updates".
Scriptlets are run in a containerized environment where e.g. udev is not
available.

Add a check for the udev socket before triggering it to handle this.
This also helps the container use case.

See also: https://bugzilla.redhat.com/show_bug.cgi?id=1352154
See also: https://src.fedoraproject.org/rpms/udisks2/pull-request/3
See also: https://github.com/coreos/fedora-coreos-tracker/issues/703

---

diff --git a/wireshark.spec b/wireshark.spec
index daa8e7b..c2a1f9c 100644
--- a/wireshark.spec
+++ b/wireshark.spec
@@ -184,7 +184,11 @@ getent group usbmon >/dev/null || groupadd -r usbmon
 
 %post cli
 %{?ldconfig}
-/usr/bin/udevadm trigger --subsystem-match=usbmon
+# skip triggering if udevd isn't even accessible, e.g. containers or
+# rpm-ostree-based systems
+if [ -S /run/udev/control ]; then
+    /usr/bin/udevadm trigger --subsystem-match=usbmon
+fi
 
 %ldconfig_postun cli