dhcp: add system support to dhcp-server

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>

meta-oe/recipes-connectivity/dhcp/dhcp_4.2.0.bbappend

@@ -0,0 +1,19 @@
+# look for files in the layer first
+FILESEXTRAPATHS := "${THISDIR}/files"
+
+inherit systemd
+
+SYSTEMD_PACKAGES = "dhcp-server-systemd"
+SYSTEMD_SERVICE_dhcp-server-systemd = "dhcpd.service"
+
+SRC_URI += "file://dhcpd.service"
+
+do_install_append() {
+    install -d ${D}${base_libdir}/systemd/system
+    install -m 644 ${WORKDIR}/dhcpd.service ${D}${base_libdir}/systemd/system
+}
+
+PACKAGES =+ "dhcp-server-systemd"
+
+FILES_dhcp-server-systemd += "${base_libdir}/systemd"
+RDEPENDS_dhcp-server-systemd += "dhcp-server"

meta-oe/recipes-connectivity/dhcp/files/dhcpd.service

@@ -0,0 +1,12 @@
+[Unit]
+Description=Dynamic Host Configuration Protocol (DHCP)
+After=syslog.target network.target
+
+[Service]
+Type=forking
+PIDFile=/var/run/dhcpd.pid
+EnvironmentFile=-/etc/default/dhcp-server
+ExecStart=/usr/sbin/dhcpd -cf /etc/dhcp/dhcpd.conf -q $INTERFACES
+
+[Install]
+WantedBy=multi-user.target