From: Peter Lemenkov <lemenkov@gmail.com>
Date: Fri, 6 Jun 2014 15:29:49 +0400
Subject: [PATCH] Added systemd notify support to EPMD

Signed-off-by: Peter Lemenkov <lemenkov@gmail.com>

Conflicts:
	erts/configure.in

diff --git a/erts/epmd/src/epmd.c b/erts/epmd/src/epmd.c
index fc58882..1757fa9 100644
--- a/erts/epmd/src/epmd.c
+++ b/erts/epmd/src/epmd.c
@@ -589,9 +589,11 @@ void epmd_cleanup_exit(EpmdVars *g, int exitval)
       for(i=0; g->argv[i] != NULL; ++i)
 	  free(g->argv[i]);
       free(g->argv);
-  }      
-      
-
+  }
+#ifdef HAVE_SYSTEMD_SD_DAEMON_H
+  sd_notifyf(0, "STATUS=Exited.\n"
+                "ERRNO=%i", exitval);
+#endif // HAVE_SYSTEMD_SD_DAEMON_H
   exit(exitval);
 }
 
diff --git a/erts/epmd/src/epmd_srv.c b/erts/epmd/src/epmd_srv.c
index cb8ca96..78524a6 100644
--- a/erts/epmd/src/epmd_srv.c
+++ b/erts/epmd/src/epmd_srv.c
@@ -394,8 +394,11 @@ void run(EpmdVars *g)
       }
       select_fd_set(g, listensock[i]);
     }
-#ifdef HAVE_SYSTEMD_SD_DAEMON_H 
+#ifdef HAVE_SYSTEMD_SD_DAEMON_H
     }
+    sd_notifyf(0, "READY=1\n"
+                  "STATUS=Processing port mapping requests...\n"
+                  "MAINPID=%lu", (unsigned long) getpid());
 #endif
 
   dbg_tty_printf(g,2,"entering the main select() loop");