util: introduce format_timestamp()

[elogind.git] / unit.c

diff --git a/unit.c b/unit.c
index 93c0d8d61a29bb442550d419e2331cbb5afb12c1..392be841d9866529e2941d20019d27d6b3dc28b9 100644 (file)
--- a/unit.c
+++ b/unit.c
@@ -394,6 +394,8 @@ int unit_merge(Unit *u, Unit *other) {
         assert(other);
         assert(u->meta.manager == other->meta.manager);
 
+        other = unit_follow_merge(other);
+
         if (other == u)
                 return 0;
 
@@ -403,7 +405,8 @@ int unit_merge(Unit *u, Unit *other) {
         if (u->meta.type != u->meta.type)
                 return -EINVAL;
 
-        if (other->meta.load_state != UNIT_STUB)
+        if (other->meta.load_state != UNIT_STUB &&
+            other->meta.load_state != UNIT_FAILED)
                 return -EEXIST;
 
         /* Merge names */
@@ -826,6 +829,8 @@ static void retroactively_stop_dependencies(Unit *u) {
 }
 
 void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns) {
+        bool unexpected = false;
+
         assert(u);
         assert(os < _UNIT_ACTIVE_STATE_MAX);
         assert(ns < _UNIT_ACTIVE_STATE_MAX);
@@ -862,26 +867,24 @@ void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns) {
                         case JOB_START:
                         case JOB_VERIFY_ACTIVE:
 
-                                if (UNIT_IS_ACTIVE_OR_RELOADING(ns)) {
+                                if (UNIT_IS_ACTIVE_OR_RELOADING(ns))
                                         job_finish_and_invalidate(u->meta.job, true);
-                                        return;
-                                } else if (ns == UNIT_ACTIVATING)
-                                        return;
-                                else
+                                else if (ns != UNIT_ACTIVATING) {
+                                        unexpected = true;
                                         job_finish_and_invalidate(u->meta.job, false);
+                                }
 
                                 break;
 
                         case JOB_RELOAD:
                         case JOB_RELOAD_OR_START:
 
-                                if (ns == UNIT_ACTIVE) {
+                                if (ns == UNIT_ACTIVE)
                                         job_finish_and_invalidate(u->meta.job, true);
-                                        return;
-                                } else if (ns == UNIT_ACTIVATING || ns == UNIT_ACTIVE_RELOADING)
-                                        return;
-                                else
+                                else if (ns != UNIT_ACTIVATING && ns != UNIT_ACTIVE_RELOADING) {
+                                        unexpected = true;
                                         job_finish_and_invalidate(u->meta.job, false);
+                                }
 
                                 break;
 
@@ -889,13 +892,12 @@ void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns) {
                         case JOB_RESTART:
                         case JOB_TRY_RESTART:
 
-                                if (ns == UNIT_INACTIVE) {
+                                if (ns == UNIT_INACTIVE)
                                         job_finish_and_invalidate(u->meta.job, true);
-                                        return;
-                                } else if (ns == UNIT_DEACTIVATING)
-                                        return;
-                                else
+                                else if (ns != UNIT_DEACTIVATING) {
+                                        unexpected = true;
                                         job_finish_and_invalidate(u->meta.job, false);
+                                }
 
                                 break;
 
@@ -908,22 +910,27 @@ void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns) {
         /* If this state change happened without being requested by a
          * job, then let's retroactively start or stop dependencies */
 
-        if (UNIT_IS_INACTIVE_OR_DEACTIVATING(os) && UNIT_IS_ACTIVE_OR_ACTIVATING(ns))
-                retroactively_start_dependencies(u);
-        else if (UNIT_IS_ACTIVE_OR_ACTIVATING(os) && UNIT_IS_INACTIVE_OR_DEACTIVATING(ns))
-                retroactively_stop_dependencies(u);
+        if (unexpected) {
+                if (UNIT_IS_INACTIVE_OR_DEACTIVATING(os) && UNIT_IS_ACTIVE_OR_ACTIVATING(ns))
+                        retroactively_start_dependencies(u);
+                else if (UNIT_IS_ACTIVE_OR_ACTIVATING(os) && UNIT_IS_INACTIVE_OR_DEACTIVATING(ns))
+                        retroactively_stop_dependencies(u);
+        }
 
         if (!UNIT_IS_ACTIVE_OR_RELOADING(os) && UNIT_IS_ACTIVE_OR_RELOADING(ns)) {
 
                 if (unit_has_name(u, SPECIAL_DBUS_SERVICE)) {
+                        log_info("D-Bus became available, trying to reconnect.");
                         /* The bus just got started, hence try to connect to it. */
                         bus_init_system(u->meta.manager);
                         bus_init_api(u->meta.manager);
                 }
 
-                if (unit_has_name(u, SPECIAL_SYSLOG_SERVICE))
+                if (unit_has_name(u, SPECIAL_SYSLOG_SERVICE)) {
                         /* The syslog daemon just got started, hence try to connect to it. */
+                        log_info("Syslog became available, trying to reconnect.");
                         log_open_syslog();
+                }
 
         } else if (UNIT_IS_ACTIVE_OR_RELOADING(os) && !UNIT_IS_ACTIVE_OR_RELOADING(ns)) {
 
@@ -1439,3 +1446,11 @@ static const char* const unit_dependency_table[_UNIT_DEPENDENCY_MAX] = {
 };
 
 DEFINE_STRING_TABLE_LOOKUP(unit_dependency, UnitDependency);
+
+static const char* const kill_mode_table[_KILL_MODE_MAX] = {
+        [KILL_PROCESS] = "process",
+        [KILL_PROCESS_GROUP] = "process-group",
+        [KILL_CONTROL_GROUP] = "control-group"
+};
+
+DEFINE_STRING_TABLE_LOOKUP(kill_mode, KillMode);