manager: always log when starting a "special unit"

This is the initiatation of the machine shutdown/reboot/etc, so it's
useful to log about this. We log about the steps that we take, but
so far we didn't really log why we started the sequence (except at
debug level).

The function is renamed, because we also use it for dbus.service,
not just targets.

diff --git a/src/core/manager.c b/src/core/manager.c
index 2e47cd50768e098cad9657bc67125249353b60f6..e269e87021086d04462c1b64dfb42fc2b11eb597 100644 (file)
--- a/src/core/manager.c
+++ b/src/core/manager.c
@@ -2612,15 +2612,15 @@ turn_off:
         return 0;
 }
 
-static void manager_start_target(Manager *m, const char *name, JobMode mode) {
-        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
-        int r;
+static void manager_start_special(Manager *m, const char *name, JobMode mode) {
+        Job *job;
 
-        log_debug("Activating special unit %s", name);
+        if (manager_add_job_by_name_and_warn(m, JOB_START, name, mode, NULL, &job) < 0)
+                return;
 
-        r = manager_add_job_by_name(m, JOB_START, name, mode, NULL, &error, NULL);
-        if (r < 0)
-                log_error("Failed to enqueue %s job: %s", name, bus_error_message(&error, r));
+        const char *s = unit_status_string(job->unit, NULL);
+
+        log_info("Activating special unit %s...", s);
 }
 
 static void manager_handle_ctrl_alt_del(Manager *m) {
@@ -2629,7 +2629,7 @@ static void manager_handle_ctrl_alt_del(Manager *m) {
          * unless it was disabled in system.conf */
 
         if (ratelimit_below(&m->ctrl_alt_del_ratelimit) || m->cad_burst_action == EMERGENCY_ACTION_NONE)
-                manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY);
+                manager_start_special(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY);
         else
                 emergency_action(m, m->cad_burst_action, EMERGENCY_ACTION_WARN, NULL, -1,
                                 "Ctrl-Alt-Del was pressed more than 7 times within 2s");
@@ -2693,21 +2693,20 @@ static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t
                 if (MANAGER_IS_SYSTEM(m))
                         manager_handle_ctrl_alt_del(m);
                 else
-                        manager_start_target(m, SPECIAL_EXIT_TARGET,
-                                             JOB_REPLACE_IRREVERSIBLY);
+                        manager_start_special(m, SPECIAL_EXIT_TARGET, JOB_REPLACE_IRREVERSIBLY);
                 break;
 
         case SIGWINCH:
                 /* This is a nop on non-init */
                 if (MANAGER_IS_SYSTEM(m))
-                        manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE);
+                        manager_start_special(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE);
 
                 break;
 
         case SIGPWR:
                 /* This is a nop on non-init */
                 if (MANAGER_IS_SYSTEM(m))
-                        manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE);
+                        manager_start_special(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE);
 
                 break;
 
@@ -2719,10 +2718,8 @@ static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t
 
                         if (MANAGER_IS_SYSTEM(m))
                                 (void) bus_init_system(m);
-                } else {
-                        log_info("Starting D-Bus service...");
-                        manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE);
-                }
+                } else
+                        manager_start_special(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE);
 
                 break;
 
@@ -2773,8 +2770,7 @@ static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t
                 if ((int) sfsi.ssi_signo >= SIGRTMIN+0 &&
                     (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) {
                         int idx = (int) sfsi.ssi_signo - SIGRTMIN;
-                        manager_start_target(m, target_table[idx].target,
-                                             target_table[idx].mode);
+                        manager_start_special(m, target_table[idx].target, target_table[idx].mode);
                         break;
                 }