cgroups: add monitor_full_path member

src/lxc/cgroups/cgfsng.c

@@ -820,6 +820,7 @@ static struct hierarchy *add_hierarchy(struct hierarchy ***h, char **clist, char
 	new->mountpoint = mountpoint;
 	new->container_base_path = container_base_path;
 	new->container_full_path = NULL;
+	new->monitor_full_path = NULL;
 	new->version = type;
 
 	newentry = append_null_to_list((void ***)h);

src/lxc/cgroups/cgroup.c

@@ -88,6 +88,7 @@ void cgroup_exit(struct cgroup_ops *ops)
 		free((*it)->mountpoint);
 		free((*it)->container_base_path);
 		free((*it)->container_full_path);
+		free((*it)->monitor_full_path);
 		free(*it);
 	}
 	free(ops->hierarchies);

src/lxc/cgroups/cgroup.h

@@ -65,6 +65,9 @@ typedef enum {
  * @container_full_path
  * - The full path to the containers cgroup.
  *
+ * @monitor_full_path
+ * - The full path to the monitor's cgroup.
+ *
  * @version
  * - legacy hierarchy
  *   If the hierarchy is a legacy hierarchy this will be set to
@@ -78,6 +81,7 @@ struct hierarchy {
 	char *mountpoint;
 	char *container_base_path;
 	char *container_full_path;
+	char *monitor_full_path;
 	int version;
 };