chiark / gitweb /
manager: fd must be int, not char
[elogind.git] / src / unit.c
index 0d5312376c2b547234dafce07349b5cd526ca8d0..6fd4dc6cb0a58bccfbea51100ff22b5f3e2341e3 100644 (file)
@@ -647,6 +647,13 @@ void unit_dump(Unit *u, FILE *f, const char *prefix) {
 
         condition_dump_list(u->meta.conditions, f, prefix);
 
+        if (dual_timestamp_is_set(&u->meta.condition_timestamp))
+                fprintf(f,
+                        "%s\tCondition Timestamp: %s\n"
+                        "%s\tCondition Result: %s\n",
+                        prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->meta.condition_timestamp.realtime)),
+                        prefix, yes_no(u->meta.condition_result));
+
         for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) {
                 Unit *other;
 
@@ -736,12 +743,18 @@ int unit_add_default_target_dependency(Unit *u, Unit *target) {
         if (target->meta.type != UNIT_TARGET)
                 return 0;
 
-        /* Only add the dependency if boths units are loaded, so that
+        /* Only add the dependency if both units are loaded, so that
          * that loop check below is reliable */
         if (u->meta.load_state != UNIT_LOADED ||
             target->meta.load_state != UNIT_LOADED)
                 return 0;
 
+        /* If either side wants no automatic dependencies, then let's
+         * skip this */
+        if (!u->meta.default_dependencies ||
+            target->meta.default_dependencies)
+                return 0;
+
         /* Don't create loops */
         if (set_get(target->meta.dependencies[UNIT_BEFORE], u))
                 return 0;
@@ -750,27 +763,24 @@ int unit_add_default_target_dependency(Unit *u, Unit *target) {
 }
 
 static int unit_add_default_dependencies(Unit *u) {
+        static const UnitDependency deps[] = {
+                UNIT_REQUIRED_BY,
+                UNIT_REQUIRED_BY_OVERRIDABLE,
+                UNIT_WANTED_BY,
+                UNIT_BOUND_BY
+        };
+
         Unit *target;
         Iterator i;
         int r;
+        unsigned k;
 
         assert(u);
 
-        SET_FOREACH(target, u->meta.dependencies[UNIT_REQUIRED_BY], i)
-                if ((r = unit_add_default_target_dependency(u, target)) < 0)
-                        return r;
-
-        SET_FOREACH(target, u->meta.dependencies[UNIT_REQUIRED_BY_OVERRIDABLE], i)
-                if ((r = unit_add_default_target_dependency(u, target)) < 0)
-                        return r;
-
-        SET_FOREACH(target, u->meta.dependencies[UNIT_WANTED_BY], i)
-                if ((r = unit_add_default_target_dependency(u, target)) < 0)
-                        return r;
-
-        SET_FOREACH(target, u->meta.dependencies[UNIT_BOUND_BY], i)
-                if ((r = unit_add_default_target_dependency(u, target)) < 0)
-                        return r;
+        for (k = 0; k < ELEMENTSOF(deps); k++)
+                SET_FOREACH(target, u->meta.dependencies[deps[k]], i)
+                        if ((r = unit_add_default_target_dependency(u, target)) < 0)
+                                return r;
 
         return 0;
 }
@@ -822,6 +832,15 @@ fail:
         return r;
 }
 
+bool unit_condition_test(Unit *u) {
+        assert(u);
+
+        dual_timestamp_get(&u->meta.condition_timestamp);
+        u->meta.condition_result = condition_test_list(u->meta.conditions);
+
+        return u->meta.condition_result;
+}
+
 /* Errors:
  *         -EBADR:     This unit type does not support starting.
  *         -EALREADY:  Unit is already started.
@@ -846,7 +865,7 @@ int unit_start(Unit *u) {
                 return -EALREADY;
 
         /* If the conditions failed, don't do anything at all */
-        if (!condition_test_list(u->meta.conditions)) {
+        if (!unit_condition_test(u)) {
                 log_debug("Starting of %s requested but condition failed. Ignoring.", u->meta.id);
                 return -EALREADY;
         }
@@ -1071,8 +1090,17 @@ static void retroactively_stop_dependencies(Unit *u) {
                         unit_check_unneeded(other);
 }
 
+void unit_trigger_on_failure(Unit *u) {
+        Unit *other;
+        Iterator i;
+
+        assert(u);
+
+        SET_FOREACH(other, u->meta.dependencies[UNIT_ON_FAILURE], i)
+                manager_add_job(u->meta.manager, JOB_START, other, JOB_REPLACE, true, NULL, NULL);
+}
+
 void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns, bool reload_success) {
-        dual_timestamp ts;
         bool unexpected;
 
         assert(u);
@@ -1085,24 +1113,28 @@ void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns, bool reload_su
          * behaviour here. For example: if a mount point is remounted
          * this function will be called too! */
 
-        dual_timestamp_get(&ts);
+        if (u->meta.manager->n_deserializing <= 0) {
+                dual_timestamp ts;
+
+                dual_timestamp_get(&ts);
 
-        if (UNIT_IS_INACTIVE_OR_FAILED(os) && !UNIT_IS_INACTIVE_OR_FAILED(ns))
-                u->meta.inactive_exit_timestamp = ts;
-        else if (!UNIT_IS_INACTIVE_OR_FAILED(os) && UNIT_IS_INACTIVE_OR_FAILED(ns))
-                u->meta.inactive_enter_timestamp = ts;
+                if (UNIT_IS_INACTIVE_OR_FAILED(os) && !UNIT_IS_INACTIVE_OR_FAILED(ns))
+                        u->meta.inactive_exit_timestamp = ts;
+                else if (!UNIT_IS_INACTIVE_OR_FAILED(os) && UNIT_IS_INACTIVE_OR_FAILED(ns))
+                        u->meta.inactive_enter_timestamp = ts;
 
-        if (!UNIT_IS_ACTIVE_OR_RELOADING(os) && UNIT_IS_ACTIVE_OR_RELOADING(ns))
-                u->meta.active_enter_timestamp = ts;
-        else if (UNIT_IS_ACTIVE_OR_RELOADING(os) && !UNIT_IS_ACTIVE_OR_RELOADING(ns))
-                u->meta.active_exit_timestamp = ts;
+                if (!UNIT_IS_ACTIVE_OR_RELOADING(os) && UNIT_IS_ACTIVE_OR_RELOADING(ns))
+                        u->meta.active_enter_timestamp = ts;
+                else if (UNIT_IS_ACTIVE_OR_RELOADING(os) && !UNIT_IS_ACTIVE_OR_RELOADING(ns))
+                        u->meta.active_exit_timestamp = ts;
+
+                timer_unit_notify(u, ns);
+                path_unit_notify(u, ns);
+        }
 
         if (UNIT_IS_INACTIVE_OR_FAILED(ns))
                 cgroup_bonding_trim_list(u->meta.cgroup_bondings, true);
 
-        timer_unit_notify(u, ns);
-        path_unit_notify(u, ns);
-
         if (u->meta.job) {
                 unexpected = false;
 
@@ -1114,7 +1146,7 @@ void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns, bool reload_su
                         job_add_to_run_queue(u->meta.job);
 
                 /* Let's check whether this state change constitutes a
-                 * finished job, or maybe cotradicts a running job and
+                 * finished job, or maybe contradicts a running job and
                  * hence needs to invalidate jobs. */
 
                 switch (u->meta.job->type) {
@@ -1123,12 +1155,12 @@ void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns, bool reload_su
                 case JOB_VERIFY_ACTIVE:
 
                         if (UNIT_IS_ACTIVE_OR_RELOADING(ns))
-                                job_finish_and_invalidate(u->meta.job, true);
+                                job_finish_and_invalidate(u->meta.job, JOB_DONE);
                         else if (u->meta.job->state == JOB_RUNNING && ns != UNIT_ACTIVATING) {
                                 unexpected = true;
 
                                 if (UNIT_IS_INACTIVE_OR_FAILED(ns))
-                                        job_finish_and_invalidate(u->meta.job, ns != UNIT_FAILED);
+                                        job_finish_and_invalidate(u->meta.job, ns == UNIT_FAILED ? JOB_FAILED : JOB_DONE);
                         }
 
                         break;
@@ -1138,12 +1170,12 @@ void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns, bool reload_su
 
                         if (u->meta.job->state == JOB_RUNNING) {
                                 if (ns == UNIT_ACTIVE)
-                                        job_finish_and_invalidate(u->meta.job, reload_success);
+                                        job_finish_and_invalidate(u->meta.job, reload_success ? JOB_DONE : JOB_FAILED);
                                 else if (ns != UNIT_ACTIVATING && ns != UNIT_RELOADING) {
                                         unexpected = true;
 
                                         if (UNIT_IS_INACTIVE_OR_FAILED(ns))
-                                                job_finish_and_invalidate(u->meta.job, ns != UNIT_FAILED);
+                                                job_finish_and_invalidate(u->meta.job, ns == UNIT_FAILED ? JOB_FAILED : JOB_DONE);
                                 }
                         }
 
@@ -1154,10 +1186,10 @@ void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns, bool reload_su
                 case JOB_TRY_RESTART:
 
                         if (UNIT_IS_INACTIVE_OR_FAILED(ns))
-                                job_finish_and_invalidate(u->meta.job, true);
+                                job_finish_and_invalidate(u->meta.job, JOB_DONE);
                         else if (u->meta.job->state == JOB_RUNNING && ns != UNIT_DEACTIVATING) {
                                 unexpected = true;
-                                job_finish_and_invalidate(u->meta.job, false);
+                                job_finish_and_invalidate(u->meta.job, JOB_FAILED);
                         }
 
                         break;
@@ -1169,45 +1201,40 @@ void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns, bool reload_su
         } else
                 unexpected = true;
 
-        /* If this state change happened without being requested by a
-         * job, then let's retroactively start or stop
-         * dependencies. We skip that step when deserializing, since
-         * we don't want to create any additional jobs just because
-         * something is already activated. */
-
-        if (unexpected && u->meta.manager->n_deserializing <= 0) {
-                if (UNIT_IS_INACTIVE_OR_FAILED(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 (u->meta.manager->n_deserializing <= 0) {
 
-        if (ns != os && ns == UNIT_FAILED) {
-                Iterator i;
-                Unit *other;
+                /* If this state change happened without being
+                 * requested by a job, then let's retroactively start
+                 * or stop dependencies. We skip that step when
+                 * deserializing, since we don't want to create any
+                 * additional jobs just because something is already
+                 * activated. */
 
-                SET_FOREACH(other, u->meta.dependencies[UNIT_ON_FAILURE], i)
-                        manager_add_job(u->meta.manager, JOB_START, other, JOB_REPLACE, true, NULL, NULL);
+                if (unexpected) {
+                        if (UNIT_IS_INACTIVE_OR_FAILED(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);
+                }
 
-                log_notice("Unit %s entered failed state.", u->meta.id);
+                if (ns != os && ns == UNIT_FAILED) {
+                        log_notice("Unit %s entered failed state.", u->meta.id);
+                        unit_trigger_on_failure(u);
+                }
         }
 
         /* Some names are special */
         if (UNIT_IS_ACTIVE_OR_RELOADING(ns)) {
+
                 if (unit_has_name(u, SPECIAL_DBUS_SERVICE))
                         /* The bus just might have become available,
                          * hence try to connect to it, if we aren't
                          * yet connected. */
                         bus_init(u->meta.manager, true);
 
-                if (unit_has_name(u, SPECIAL_SYSLOG_SERVICE))
-                        /* The syslog daemon just might have become
-                         * available, hence try to connect to it, if
-                         * we aren't yet connected. */
-                        log_open();
-
                 if (u->meta.type == UNIT_SERVICE &&
-                    !UNIT_IS_ACTIVE_OR_RELOADING(os)) {
+                    !UNIT_IS_ACTIVE_OR_RELOADING(os) &&
+                    u->meta.manager->n_deserializing <= 0) {
                         /* Write audit record if we have just finished starting up */
                         manager_send_unit_audit(u->meta.manager, u, AUDIT_SERVICE_START, true);
                         u->meta.in_audit = true;
@@ -1218,18 +1245,13 @@ void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns, bool reload_su
 
         } else {
 
-                if (unit_has_name(u, SPECIAL_SYSLOG_SERVICE))
-                        /* The syslog daemon might just have
-                         * terminated, hence try to disconnect from
-                         * it. */
-                        log_close_syslog();
-
                 /* We don't care about D-Bus here, since we'll get an
                  * asynchronous notification for it anyway. */
 
                 if (u->meta.type == UNIT_SERVICE &&
                     UNIT_IS_INACTIVE_OR_FAILED(ns) &&
-                    !UNIT_IS_INACTIVE_OR_FAILED(os)) {
+                    !UNIT_IS_INACTIVE_OR_FAILED(os) &&
+                    u->meta.manager->n_deserializing <= 0) {
 
                         /* Hmm, if there was no start record written
                          * write it now, so that we always have a nice
@@ -1247,6 +1269,8 @@ void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns, bool reload_su
                 }
         }
 
+        manager_recheck_syslog(u->meta.manager);
+
         /* Maybe we finished startup and are now ready for being
          * stopped because unneeded? */
         unit_check_unneeded(u);
@@ -2011,8 +2035,7 @@ char **unit_full_printf_strv(Unit *u, char **l) {
         return r;
 
 fail:
-        j--;
-        while (j >= r)
+        for (j--; j >= r; j--)
                 free(*j);
 
         free(r);
@@ -2063,6 +2086,10 @@ int unit_serialize(Unit *u, FILE *f, FDSet *fds) {
         dual_timestamp_serialize(f, "active-enter-timestamp", &u->meta.active_enter_timestamp);
         dual_timestamp_serialize(f, "active-exit-timestamp", &u->meta.active_exit_timestamp);
         dual_timestamp_serialize(f, "inactive-enter-timestamp", &u->meta.inactive_enter_timestamp);
+        dual_timestamp_serialize(f, "condition-timestamp", &u->meta.condition_timestamp);
+
+        if (dual_timestamp_is_set(&u->meta.condition_timestamp))
+                unit_serialize_item(u, f, "condition-result", yes_no(u->meta.condition_result));
 
         /* End marker */
         fputc('\n', f);
@@ -2152,6 +2179,18 @@ int unit_deserialize(Unit *u, FILE *f, FDSet *fds) {
                 } else if (streq(l, "inactive-enter-timestamp")) {
                         dual_timestamp_deserialize(v, &u->meta.inactive_enter_timestamp);
                         continue;
+                } else if (streq(l, "condition-timestamp")) {
+                        dual_timestamp_deserialize(v, &u->meta.condition_timestamp);
+                        continue;
+                } else if (streq(l, "condition-result")) {
+                        int b;
+
+                        if ((b = parse_boolean(v)) < 0)
+                                log_debug("Failed to parse condition result value %s", v);
+                        else
+                                u->meta.condition_result = b;
+
+                        continue;
                 }
 
                 if ((r = UNIT_VTABLE(u)->deserialize_item(u, l, v, fds)) < 0)
@@ -2203,7 +2242,7 @@ int unit_coldplug(Unit *u) {
                         return r;
 
         if (u->meta.deserialized_job >= 0) {
-                if ((r = manager_add_job(u->meta.manager, u->meta.deserialized_job, u, JOB_FAIL, false, NULL, NULL)) < 0)
+                if ((r = manager_add_job(u->meta.manager, u->meta.deserialized_job, u, JOB_IGNORE_DEPENDENCIES, false, NULL, NULL)) < 0)
                         return r;
 
                 u->meta.deserialized_job = _JOB_TYPE_INVALID;
@@ -2224,7 +2263,10 @@ void unit_status_printf(Unit *u, const char *format, ...) {
         if (u->meta.manager->running_as != MANAGER_SYSTEM)
                 return;
 
-        if (!u->meta.manager->show_status)
+        /* If Plymouth is running make sure we show the status, so
+         * that there's something nice to see when people press Esc */
+
+        if (!u->meta.manager->show_status && !plymouth_running())
                 return;
 
         if (!manager_is_booting_or_shutting_down(u->meta.manager))