diff --git a/dom0/aux-tools/fix_dir_perms.sh b/dom0/aux-tools/fix_dir_perms.sh
new file mode 100755
index 00000000..82b3468f
--- /dev/null
+++ b/dom0/aux-tools/fix_dir_perms.sh
@@ -0,0 +1,20 @@
+#!/bin/sh
+chgrp qubes /etc/xen
+chmod 710 /etc/xen
+chgrp qubes /var/run/xenstored/*
+chmod 660 /var/run/xenstored/*
+chgrp qubes /var/lib/xen
+chmod 770 /var/lib/xen
+chgrp qubes /var/log/xen
+chmod 770 /var/log/xen
+chgrp qubes /proc/xen/privcmd
+chmod 660 /proc/xen/privcmd
+chgrp qubes /dev/xen/evtchn
+chmod 660 /dev/xen/evtchn
+touch /var/run/qubes/xl-lock
+chgrp qubes /var/run/qubes/xl-lock
+chmod 660 /var/run/qubes/xl-lock
+chgrp -R qubes /var/log/xen
+chmod -R g+rX /var/log/xen
+chmod g+s /var/log/xen/console
+mkdir -p /var/run/xen-hotplug