add nsd package

pkg/nsd/init

@@ -0,0 +1,28 @@
+#!/sbin/openrc-run
+
+description="NSD is an authoritative-only, high performance, open source name server"
+checkconf=/usr/sbin/nsd-checkconf
+cfgfile=${NSD_CONFIG:-/etc/nsd/nsd.conf}
+pidfile=$($checkconf -o pidfile $cfgfile)
+pidfile=${pidfile:-/var/run/nsd/nsd.pid}
+command=/usr/sbin/nsd
+command_args=""
+
+depend() {
+    use logger
+}
+
+start_pre() {
+    [ -f /etc/nsd/nsd.conf ] || {
+	cp -r /etc/nsd.sample/* /etc/nsd/
+	nsd-control-setup
+    }
+
+    ebegin
+    checkpath --directory --owner nsd:nsd ${pidfile%/*}
+    checkpath --directory --owner nsd:nsd /var/db/nsd/
+    $checkconf $cfgfile
+    [ "$cfgfile" = "/etc/nsd/nsd.conf" ] || command_args="$command_args -c $cfgfile"
+    [ "$pidfile" = "/var/run/nsd/nsd.pid" ] || command_args="$command_args -P $pidfile"
+    eend $?
+}