package/netsnmp: add systemd service file

Signed-off-by: David Johnson <dave-git@centerclick.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/netsnmp/netsnmp.mk

@@ -41,6 +41,12 @@ NETSNMP_INSTALL_TARGET_OPTS = DESTDIR=$(TARGET_DIR) LIB_LDCONFIG_CMD=true instal
 NETSNMP_MAKE = $(MAKE1)
 NETSNMP_CONFIG_SCRIPTS = net-snmp-config
 
+ifeq ($(BR2_INIT_SYSTEMD),y)
+NETSNMP_CONF_OPTS += --with-systemd
+else
+NETSNMP_CONF_OPTS += --without-systemd
+endif
+
 ifeq ($(BR2_ENDIAN),"BIG")
 NETSNMP_CONF_OPTS += --with-endianness=big
 else
@@ -104,6 +110,10 @@ define NETSNMP_INSTALL_INIT_SYSV
 	$(INSTALL) -D -m 0755 package/netsnmp/S59snmpd \
 		$(TARGET_DIR)/etc/init.d/S59snmpd
 endef
+define NETSNMP_INSTALL_INIT_SYSTEMD
+	$(INSTALL) -D -m 0644 package/netsnmp/snmpd.service \
+		$(TARGET_DIR)/usr/lib/systemd/system/snmpd.service
+endef
 endif
 
 $(eval $(autotools-package))

package/netsnmp/snmpd.service

@@ -0,0 +1,15 @@
+[Unit]
+Description=SNMP Daemon
+After=network.target
+ConditionPathExists=/etc/snmp/snmpd.conf
+
+[Service]
+Type=simple
+Environment=MIBDIRS=/usr/share/snmp/mibs
+Environment=SNMPDOPTS='-Lsd -Lf /dev/null -p /var/run/snmpd.pid 127.0.0.1'
+EnvironmentFile=-/etc/default/snmpd
+PassEnvironment=MIBDIRS
+ExecStart=/usr/sbin/snmpd -f $SNMPDOPTS
+
+[Install]
+WantedBy=multi-user.target