unit: remove union Unit

[elogind.git] / src / cgroup.c

diff --git a/src/cgroup.c b/src/cgroup.c
index 4aa01f18981b5c7a84e7ba2b66c78855201f344d..e141b4153ddb86292b603814ed9fdc71e951df47 100644 (file)
--- a/src/cgroup.c
+++ b/src/cgroup.c
@@ -38,11 +38,11 @@ int cgroup_bonding_realize(CGroupBonding *b) {
         assert(b->path);
         assert(b->controller);
 
-        if (b->realized)
-                return 0;
-
-        if ((r = cg_create(b->controller, b->path)) < 0)
+        r = cg_create(b->controller, b->path);
+        if (r < 0) {
+                log_warning("Failed to create cgroup %s:%s: %s", b->controller, b->path, strerror(-r));
                 return r;
+        }
 
         b->realized = true;
 
@@ -66,16 +66,16 @@ void cgroup_bonding_free(CGroupBonding *b, bool remove_or_trim) {
         if (b->unit) {
                 CGroupBonding *f;
 
-                LIST_REMOVE(CGroupBonding, by_unit, b->unit->meta.cgroup_bondings, b);
+                LIST_REMOVE(CGroupBonding, by_unit, b->unit->cgroup_bondings, b);
 
                 if (streq(b->controller, SYSTEMD_CGROUP_CONTROLLER)) {
-                        assert_se(f = hashmap_get(b->unit->meta.manager->cgroup_bondings, b->path));
+                        assert_se(f = hashmap_get(b->unit->manager->cgroup_bondings, b->path));
                         LIST_REMOVE(CGroupBonding, by_path, f, b);
 
                         if (f)
-                                hashmap_replace(b->unit->meta.manager->cgroup_bondings, b->path, f);
+                                hashmap_replace(b->unit->manager->cgroup_bondings, b->path, f);
                         else
-                                hashmap_remove(b->unit->meta.manager->cgroup_bondings, b->path);
+                                hashmap_remove(b->unit->manager->cgroup_bondings, b->path);
                 }
         }
 
@@ -197,6 +197,9 @@ int cgroup_bonding_kill_list(CGroupBonding *first, int sig, bool sigcont, Set *s
         Set *allocated_set = NULL;
         int ret = -EAGAIN, r;
 
+        if (!first)
+                return 0;
+
         if (!s)
                 if (!(s = allocated_set = set_new(trivial_hash_func, trivial_compare_func)))
                         return -ENOMEM;
@@ -267,7 +270,7 @@ int manager_setup_cgroup(Manager *m) {
         assert(m);
 
         /* 0. Be nice to Ingo Molnar #628004 */
-        if (path_is_mount_point("/sys/fs/cgroup/systemd") <= 0) {
+        if (path_is_mount_point("/sys/fs/cgroup/systemd", false) <= 0) {
                 log_warning("No control group support available, not creating root group.");
                 return 0;
         }
@@ -363,7 +366,8 @@ int cgroup_notify_empty(Manager *m, const char *group) {
         assert(m);
         assert(group);
 
-        if (!(l = hashmap_get(m->cgroup_bondings, group)))
+        l = hashmap_get(m->cgroup_bondings, group);
+        if (!l)
                 return 0;
 
         LIST_FOREACH(by_path, b, l) {
@@ -372,7 +376,8 @@ int cgroup_notify_empty(Manager *m, const char *group) {
                 if (!b->unit)
                         continue;
 
-                if ((t = cgroup_bonding_is_empty_list(b)) < 0) {
+                t = cgroup_bonding_is_empty_list(b);
+                if (t < 0) {
 
                         /* If we don't know, we don't know */
                         if (t != -EAGAIN)
@@ -381,9 +386,13 @@ int cgroup_notify_empty(Manager *m, const char *group) {
                         continue;
                 }
 
-                if (t > 0)
+                if (t > 0) {
+                        /* If it is empty, let's delete it */
+                        cgroup_bonding_trim_list(b->unit->cgroup_bondings, true);
+
                         if (UNIT_VTABLE(b->unit)->cgroup_notify_empty)
                                 UNIT_VTABLE(b->unit)->cgroup_notify_empty(b->unit);
+                }
         }
 
         return 0;