-CGroupAttribute *cgroup_attribute_find_list(CGroupAttribute *first, const char *controller, const char *name) {
+bool cgroup_attribute_matches(CGroupAttribute *a, const char *controller, const char *name) {
+ assert(a);
+
+ if (controller) {
+ if (streq(a->controller, controller) && (!name || streq(a->name, name)))
+ return true;
+
+ } else if (!name)
+ return true;
+ else if (streq(a->name, name)) {
+ size_t x, y;
+ x = strlen(a->controller);
+ y = strlen(name);
+
+ if (y > x &&
+ memcmp(a->controller, name, x) == 0 &&
+ name[x] == '.')
+ return true;
+ }
+
+ return false;
+}
+
+CGroupAttribute *cgroup_attribute_find_list(
+ CGroupAttribute *first,
+ const char *controller,
+ const char *name) {