From 7b503f884ef65ac44b3cf9f009391f45621880fa Mon Sep 17 00:00:00 2001
From: Richard Ipsum <richard.ipsum@codethink.co.uk>
Date: Mon, 13 Apr 2015 19:25:09 +0000
Subject: Add ntp configure extension

Change-Id: If7926bc7ed11d966feca2aa9ef767dc29996729e
---
 ntpd.configure | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 ntpd.configure

diff --git a/ntpd.configure b/ntpd.configure
new file mode 100644
index 00000000..fd39d9e9
--- /dev/null
+++ b/ntpd.configure
@@ -0,0 +1,54 @@
+#!/bin/bash
+#
+# Copyright © 2015 Codethink Limited
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; version 2 of the License.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+set -e
+
+ROOT="$1"
+
+# NTP conflicts with systemd-timesyncd,
+# so if we want to use NTP then we need to disable systemd-timesyncd
+rm "$ROOT/etc/systemd/system/sysinit.target.wants/systemd-timesyncd.service"
+
+# On at least x86 64 the default rlimit
+# ntp sets (32kB) isn't enough, so increase it
+cat >> "$ROOT/etc/ntp.conf" << EOF
+
+# The default rlimit isn't enough in some cases
+# so we set a higher limit here
+rlimit memlock 256
+EOF
+
+NTPD_PIDFILE=/run/ntpd.pid
+cat > "$ROOT/usr/lib/systemd/system/ntpd.service" << EOF
+[Unit]
+Description=Network Time Service
+After=network.target nss-lookup.target
+Conflicts=systemd-timesyncd.service
+
+[Service]
+Type=forking
+PIDFile=$NTPD_PIDFILE
+ExecStart=/usr/bin/ntpd -u ntp:ntp -p $NTPD_PIDFILE
+PrivateTmp=True
+Restart=on-failure
+
+[Install]
+WantedBy=multi-user.target
+EOF
+
+ln -s "/usr/lib/systemd/system/ntpd.service" \
+    "$ROOT/usr/lib/systemd/system/multi-user.target.wants/ntpd.service"
-- 
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