Make control_event_bootstrap() return void

Simplify control_event_bootstrap() by making it return void again.  It
is currently a fairly complicated function, and it's made more
complicated by returning an int to signal whether it logged at NOTICE
or INFO.

The callers conditionally log messages at level NOTICE based on this
return value.  Change the callers to unconditionally log their verbose
human-readable messages at level INFO to keep NOTICE logs less
cluttered.

This partially reverts the changes of #14950.

src/core/or/circuitbuild.c

@@ -1051,14 +1051,10 @@ circuit_build_no_more_hops(origin_circuit_t *circ)
     const or_options_t *options = get_options();
     note_that_we_completed_a_circuit();
     /* FFFF Log a count of known routers here */
-    log_notice(LD_GENERAL,
-               "Tor has successfully opened a circuit. "
-               "Looks like client functionality is working.");
-    if (control_event_bootstrap(BOOTSTRAP_STATUS_DONE, 0) == 0) {
-      log_notice(LD_GENERAL,
-                 "Tor has successfully opened a circuit. "
-                 "Looks like client functionality is working.");
-    }
+    log_info(LD_GENERAL,
+             "Tor has successfully opened a circuit. "
+             "Looks like client functionality is working.");
+    control_event_bootstrap(BOOTSTRAP_STATUS_DONE, 0);
     control_event_client_status(LOG_NOTICE, "CIRCUIT_ESTABLISHED");
     clear_broken_connection_map(1);
     if (server_mode(options) && !check_whether_orport_reachable(options)) {

src/feature/control/control.c

@@ -7101,17 +7101,15 @@ static int bootstrap_problems = 0;
  * <b>status</b> is the new status, that is, what task we will be doing
  * next. <b>progress</b> is zero if we just started this task, else it
  * represents progress on the task.
- *
- * Return true if we logged a message at level NOTICE, and false otherwise.
  */
-int
+void
 control_event_bootstrap(bootstrap_status_t status, int progress)
 {
   const char *tag, *summary;
   char buf[BOOTSTRAP_MSG_LEN];
 
   if (bootstrap_percent == BOOTSTRAP_STATUS_DONE)
-    return 0; /* already bootstrapped; nothing to be done here. */
+    return; /* already bootstrapped; nothing to be done here. */
 
   /* special case for handshaking status, since our TLS handshaking code
    * can't distinguish what the connection is going to be for. */
@@ -7158,10 +7156,7 @@ control_event_bootstrap(bootstrap_status_t status, int progress)
       /* Remember that we gave a notice at this level. */
       notice_bootstrap_percent = bootstrap_percent;
     }
-    return loglevel == LOG_NOTICE;
   }
-
-  return 0;
 }
 
 /** Called when Tor has failed to make bootstrapping progress in a way

src/feature/control/control.h

@@ -191,7 +191,7 @@ void enable_control_logging(void);
 
 void monitor_owning_controller_process(const char *process_spec);
 
-int control_event_bootstrap(bootstrap_status_t status, int progress);
+void control_event_bootstrap(bootstrap_status_t status, int progress);
 MOCK_DECL(void, control_event_bootstrap_prob_or,(const char *warn,
                                                  int reason,
                                                  or_connection_t *or_conn));

src/feature/nodelist/nodelist.c

@@ -2553,10 +2553,9 @@ update_router_have_minimum_dir_info(void)
   /* If paths have just become available in this update. */
   if (res && !have_min_dir_info) {
     control_event_client_status(LOG_NOTICE, "ENOUGH_DIR_INFO");
-    if (control_event_bootstrap(BOOTSTRAP_STATUS_CONN_OR, 0) == 0) {
-      log_notice(LD_DIR,
-              "We now have enough directory information to build circuits.");
-    }
+    control_event_bootstrap(BOOTSTRAP_STATUS_CONN_OR, 0);
+    log_info(LD_DIR,
+             "We now have enough directory information to build circuits.");
   }
 
   /* If paths have just become unavailable in this update. */