package/haveged: add systemd units

Signed-off-by: Steven Noonan <steven@uplinklabs.net>
Reviewed-by: Mike Williams <mike@mikebwilliams.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/haveged/haveged.mk

@@ -14,4 +14,12 @@ define HAVEGED_INSTALL_INIT_SYSV
 		$(TARGET_DIR)/etc/init.d/S21haveged
 endef
 
+define HAVEGED_INSTALL_INIT_SYSTEMD
+	$(INSTALL) -D -m 644 package/haveged/haveged.service \
+		$(TARGET_DIR)/usr/lib/systemd/system/haveged.service
+	mkdir -p $(TARGET_DIR)/etc/systemd/system/multi-user.target.wants
+	ln -fs /usr/lib/systemd/system/haveged.service \
+		$(TARGET_DIR)/etc/systemd/system/multi-user.target.wants/haveged.service
+endef
+
 $(eval $(autotools-package))

package/haveged/haveged.service

@@ -0,0 +1,10 @@
+[Unit]
+Description=Entropy Harvesting Daemon
+Documentation=man:haveged(8)
+
+[Service]
+ExecStart=/usr/bin/haveged -F -w 1024 -v 1
+SuccessExitStatus=143
+
+[Install]
+WantedBy=multi-user.target