units/systemd-timesyncd.service.in

   1 #  SPDX-License-Identifier: LGPL-2.1-or-later
   2 #
   3 #  This file is part of systemd.
   4 #
   5 #  systemd is free software; you can redistribute it and/or modify it
   6 #  under the terms of the GNU Lesser General Public License as published by
   7 #  the Free Software Foundation; either version 2.1 of the License, or
   8 #  (at your option) any later version.
   9
  10 [Unit]
  11 Description=Network Time Synchronization
  12 Documentation=man:systemd-timesyncd.service(8)
  13 ConditionCapability=CAP_SYS_TIME
  14 ConditionVirtualization=!container
  15 DefaultDependencies=no
  16 After=systemd-sysusers.service
  17 Before=time-set.target sysinit.target shutdown.target
  18 Conflicts=shutdown.target
  19 Wants=time-set.target
  20
  21 [Service]
  22 AmbientCapabilities=CAP_SYS_TIME
  23 BusName=org.freedesktop.timesync1
  24 CapabilityBoundingSet=CAP_SYS_TIME
  25 # Turn off DNSSEC validation for hostname look-ups, since those need the
  26 # correct time to work, but we likely won't acquire that without NTP. Let's
  27 # break this chicken-and-egg cycle here.
  28 Environment=SYSTEMD_NSS_RESOLVE_VALIDATE=0
  29 ExecStart=!!{{LIBEXECDIR}}/systemd-timesyncd
  30 LockPersonality=yes
  31 MemoryDenyWriteExecute=yes
  32 NoNewPrivileges=yes
  33 PrivateDevices=yes
  34 PrivateTmp=yes
  35 ProtectProc=invisible
  36 ProtectControlGroups=yes
  37 ProtectHome=yes
  38 ProtectHostname=yes
  39 ProtectKernelLogs=yes
  40 ProtectKernelModules=yes
  41 ProtectKernelTunables=yes
  42 ProtectSystem=strict
  43 Restart=always
  44 RestartSec=0
  45 RestrictAddressFamilies=AF_UNIX AF_INET AF_INET6
  46 RestrictNamespaces=yes
  47 RestrictRealtime=yes
  48 RestrictSUIDSGID=yes
  49 RuntimeDirectory=systemd/timesync
  50 StateDirectory=systemd/timesync
  51 SystemCallArchitectures=native
  52 SystemCallErrorNumber=EPERM
  53 SystemCallFilter=@system-service @clock
  54 Type=notify
  55 User=systemd-timesync
  56 {{SERVICE_WATCHDOG}}
  57
  58 [Install]
  59 WantedBy=sysinit.target
  60 Alias=dbus-org.freedesktop.timesync1.service