cgroup: when getting cgroup empty notifications, always search up the tree

1 files changed, 11 insertions, 5 deletions

diff --git a/src/login/logind.c b/src/login/logind.c
index 8997b4689e..7fd6515ffd 100644
--- a/src/login/logind.c
+++ b/src/login/logind.c
@@ -782,12 +782,19 @@ finish:
 }
 
 int manager_get_session_by_cgroup(Manager *m, const char *cgroup, Session **session) {
+        Session *s;
         char *p;
 
         assert(m);
         assert(cgroup);
         assert(session);
 
+        s = hashmap_get(m->cgroups, cgroup);
+        if (s) {
+                *session = s;
+                return 1;
+        }
+
         p = strdup(cgroup);
         if (!p) {
                 log_error("Out of memory.");
@@ -795,24 +802,23 @@ int manager_get_session_by_cgroup(Manager *m, const char *cgroup, Session **sess
         }
 
         for (;;) {
-                Session *s;
                 char *e;
 
-                if (isempty(p) || streq(p, "/")) {
+                e = strrchr(p, '/');
+                if (!e || e == p) {
                         free(p);
                         *session = NULL;
                         return 0;
                 }
 
+                *e = 0;
+
                 s = hashmap_get(m->cgroups, p);
                 if (s) {
                         free(p);
                         *session = s;
                         return 1;
                 }
-
-                assert_se(e = strrchr(p, '/'));
-                *e = 0;
         }
 }