1 files changed, 35 insertions, 0 deletions
diff --git a/dnsdist-systemd.cc b/dnsdist-systemd.cc
new file mode 100644
index 0000000..6f9f890
--- /dev/null
+++ b/dnsdist-systemd.cc
@@ -0,0 +1,35 @@
+/*
+ * This file is part of PowerDNS or dnsdist.
+ * Copyright -- PowerDNS.COM B.V. and its contributors
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * In addition, for the avoidance of any doubt, permission is granted to
+ * link this program with OpenSSL and to (re)distribute the binaries
+ * produced as the result of such linking.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+#include "config.h"
+#include "dnsdist-systemd.hh"
+#include <cstdlib>
+
+bool running_in_service_mgr() {
+#ifdef HAVE_SYSTEMD
+  char *c;
+  c = getenv("NOTIFY_SOCKET"); // XXX Ideally we'd check for INVOCATION_ID (systemd.exec(5)), but that was introduced in systemd 232, and Debian Jessie has 215
+  if (c != nullptr) {
+    return true;
+  }
+#endif
+  return false;
+}