tor/contrib/dist/tor.service.in

# tor.service -- this systemd configuration file for Tor sets up a
# relatively conservative, hardened Tor service.  You may need to
# edit it if you are making changes to your Tor configuration that it
# does not allow.  Package maintainers: this should be a starting point
# for your tor.service; it is not the last point.

[Unit]
Description=Anonymizing overlay network for TCP
After=syslog.target network.target nss-lookup.target

[Service]
Type=notify
NotifyAccess=all
ExecStartPre=@BINDIR@/tor -f @CONFDIR@/torrc --verify-config
ExecStart=@BINDIR@/tor -f @CONFDIR@/torrc
ExecReload=/bin/kill -HUP ${MAINPID}
KillSignal=SIGINT
TimeoutSec=30
Restart=on-failure
WatchdogSec=1m
LimitNOFILE=32768

# Hardening
PrivateTmp=yes
PrivateDevices=yes
ProtectHome=yes
ProtectSystem=full
ReadOnlyDirectories=/
ReadWriteDirectories=-@LOCALSTATEDIR@/lib/tor
ReadWriteDirectories=-@LOCALSTATEDIR@/log/tor
NoNewPrivileges=yes
CapabilityBoundingSet=CAP_SETUID CAP_SETGID CAP_NET_BIND_SERVICE

[Install]
WantedBy=multi-user.target