From b56693beb345781092f294c209cba49ace355dd7 Mon Sep 17 00:00:00 2001
From: "Hongli Lai (Phusion)" <hongli@phusion.nl>
Date: Mon, 12 May 2014 17:29:45 +0200
Subject: [PATCH] Fix syslog-ng.

The system() source in the default syslog-ng config file does
not work in Docker because it tries to access /proc/kmsg,
which is not allowed due to Docker's privileges. We replace
it by a source that only reads from /dev/log.
---
 image/system_services.sh | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/image/system_services.sh b/image/system_services.sh
index af3f5e5da..7947ad4aa 100755
--- a/image/system_services.sh
+++ b/image/system_services.sh
@@ -21,6 +21,9 @@ mkdir /etc/service/syslog-ng
 cp /build/runit/syslog-ng /etc/service/syslog-ng/run
 mkdir -p /var/lib/syslog-ng
 cp /build/config/syslog_ng_default /etc/default/syslog-ng
+# Replace the system() source because inside Docker we
+# can't access /proc/kmsg.
+sed -i -E 's/^(\s*)system\(\);/\1unix-stream("\/dev\/log");/' /etc/syslog-ng/syslog-ng.conf
 
 ## Install logrotate.
 $minimal_apt_get_install logrotate