From 720c1103fa65c94a3fe92595246bcb5e0ed62c39 Mon Sep 17 00:00:00 2001
From: Susant Sahani <ssahani@gmail.com>
Date: Wed, 21 Jun 2023 16:23:31 +0530
Subject: [PATCH] Add unit file

---
 meson.build                               |  1 +
 src/nts-timesync/80-systemd-timesync.list |  2 +-
 units/meson.build                         |  6 +++
 units/nts-timesyncd.service.in            | 60 +++++++++++++++++++++++
 4 files changed, 68 insertions(+), 1 deletion(-)
 create mode 100644 units/meson.build
 create mode 100644 units/nts-timesyncd.service.in

diff --git a/meson.build b/meson.build
index 1f54107..ab9b0cb 100644
--- a/meson.build
+++ b/meson.build
@@ -880,6 +880,7 @@ subdir('src/fundamental')
 subdir('src/basic')
 subdir('src/libsystemd')
 subdir('src/shared')
+subdir('units')
 
 install_libsystemd_static = static_library(
         'systemd',
diff --git a/src/nts-timesync/80-systemd-timesync.list b/src/nts-timesync/80-systemd-timesync.list
index 95e15f7..f41a2b6 100644
--- a/src/nts-timesync/80-systemd-timesync.list
+++ b/src/nts-timesync/80-systemd-timesync.list
@@ -1,4 +1,4 @@
 # This file is part of systemd.
 # See systemd-timedated.service(8) for more information.
 
-systemd-timesyncd.service
+systemd-nts-timesyncd.service
diff --git a/units/meson.build b/units/meson.build
new file mode 100644
index 0000000..5c28211
--- /dev/null
+++ b/units/meson.build
@@ -0,0 +1,6 @@
+systemd_nts_timesyncd_conf = configure_file(
+                       input : 'nts-timesyncd.service.in',
+                       output : 'nts-timesyncd.service',
+                       configuration : substs)
+                       install_data(systemd_nts_timesyncd_conf,
+                       install_dir : '/lib/systemd/system')
diff --git a/units/nts-timesyncd.service.in b/units/nts-timesyncd.service.in
new file mode 100644
index 0000000..234a7e4
--- /dev/null
+++ b/units/nts-timesyncd.service.in
@@ -0,0 +1,60 @@
+#  SPDX-License-Identifier: LGPL-2.1-or-later
+#
+#  This file is part of systemd.
+#
+#  systemd is free software; you can redistribute it and/or modify it
+#  under the terms of the GNU Lesser General Public License as published by
+#  the Free Software Foundation; either version 2.1 of the License, or
+#  (at your option) any later version.
+
+[Unit]
+Description=Network Time Synchronization using ntpsec
+Documentation=man:nts-timesyncd.service.service(8)
+ConditionCapability=CAP_SYS_TIME
+ConditionVirtualization=!container
+DefaultDependencies=no
+After=systemd-sysusers.service
+Before=time-set.target sysinit.target shutdown.target
+Conflicts=shutdown.target
+Wants=time-set.target
+
+[Service]
+AmbientCapabilities=CAP_SYS_TIME
+BusName=org.freedesktop.ntstimesync1
+CapabilityBoundingSet=CAP_SYS_TIME
+# Turn off DNSSEC validation for hostname look-ups, since those need the
+# correct time to work, but we likely won't acquire that without NTP. Let's
+# break this chicken-and-egg cycle here.
+Environment=SYSTEMD_NSS_RESOLVE_VALIDATE=0
+ExecStart=!!/usr/bin/nts-timesyncd
+LockPersonality=yes
+MemoryDenyWriteExecute=yes
+NoNewPrivileges=yes
+PrivateDevices=yes
+PrivateTmp=yes
+ProtectProc=invisible
+ProtectControlGroups=yes
+ProtectHome=yes
+ProtectHostname=yes
+ProtectKernelLogs=yes
+ProtectKernelModules=yes
+ProtectKernelTunables=yes
+ProtectSystem=strict
+Restart=always
+RestartSec=0
+RestrictAddressFamilies=AF_UNIX AF_INET AF_INET6
+RestrictNamespaces=yes
+RestrictRealtime=yes
+RestrictSUIDSGID=yes
+RuntimeDirectory=nts-timesync
+StateDirectory=nts-timesync
+SystemCallArchitectures=native
+SystemCallErrorNumber=EPERM
+SystemCallFilter=@system-service @clock
+Type=notify
+User=nts-timesync
+
+
+[Install]
+WantedBy=sysinit.target
+Alias=dbus-org.freedesktop.ntstimesync1.service