Shutdown marker displaced to runtime

conf/conf.c

@@ -75,7 +75,6 @@ static void config_done(void);
 static timer *config_timer;		/* Timer for scheduled configuration rollback */
 
 /* These are public just for cmd_show_status(), should not be accessed elsewhere */
-int shutting_down;			/* Shutdown requested, do not accept new config changes */
 int configuring;			/* Reconfiguration is running */
 int undo_available;			/* Undo was not requested from last reconfiguration */
 /* Note that both shutting_down and undo_available are related to requests, not processing */

lib/runtime.c

@@ -9,6 +9,8 @@
 
 #include "lib/runtime.h"
 
+int shutting_down = 0;
+
 struct global_runtime global_runtime_initial = {
   .tf_log = {
     .fmt1 = "%F %T.%3f",

lib/runtime.h

@@ -9,6 +9,10 @@
 
 #include "lib/timer.h"
 
+/* Shutdown requested, behave accordingly.
+ * Initially zero, once set to one, never reset. */
+extern int shutting_down;
+
 /* I/O loops log information about task scheduling */
 enum latency_debug_flags {
   DL_PING = 1,