+/* The default value for the net.unix.max_dgram_qlen sysctl */
+#define DEFAULT_UNIX_MAX_DGRAM_QLEN 512UL
+
+#if 0 /// elogind allows foreign cgroup controllers. (Well, needs them, actually)
+#define SYSTEMD_CGROUP_CONTROLLER_LEGACY "name=systemd"
+#define SYSTEMD_CGROUP_CONTROLLER_HYBRID "name=unified"
+#define SYSTEMD_CGROUP_CONTROLLER "_systemd"
+#else
+#ifndef SYSTEMD_CGROUP_CONTROLLER_LEGACY
+# define SYSTEMD_CGROUP_CONTROLLER_LEGACY "name=elogind"
+#endif // SYSTEMD_CGROUP_CONTROLLER_LEGACY
+#ifndef SYSTEMD_CGROUP_CONTROLLER_HYBRID
+# define SYSTEMD_CGROUP_CONTROLLER_HYBRID "name=elogind"
+#endif // SYSTEMD_CGROUP_CONTROLLER_HYBRID
+#ifndef SYSTEMD_CGROUP_CONTROLLER
+# define SYSTEMD_CGROUP_CONTROLLER "_elogind"
+#endif // SYSTEMD_CGROUP_CONTROLLER
+#endif // 0