+/* Ask systemd-logind, which might grant access to unprivileged users
+ * through PolicyKit */
+static int reboot_with_logind(DBusConnection *bus, enum action a) {
+#ifdef HAVE_LOGIND
+ const char *method;
+ dbus_bool_t interactive = true;
+
+ if (!bus)
+ return -EIO;
+
+ polkit_agent_open_if_enabled();
+
+ switch (a) {
+
+ case ACTION_REBOOT:
+ method = "Reboot";
+ break;
+
+ case ACTION_POWEROFF:
+ method = "PowerOff";
+ break;
+
+ case ACTION_SUSPEND:
+ method = "Suspend";
+ break;
+
+ case ACTION_HIBERNATE:
+ method = "Hibernate";
+ break;
+
+ case ACTION_HYBRID_SLEEP:
+ method = "HybridSleep";
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return bus_method_call_with_reply(
+ bus,
+ "org.freedesktop.login1",
+ "/org/freedesktop/login1",
+ "org.freedesktop.login1.Manager",
+ method,
+ NULL,
+ NULL,
+ DBUS_TYPE_BOOLEAN, &interactive,
+ DBUS_TYPE_INVALID);
+#else
+ return -ENOSYS;
+#endif
+}
+
+static int check_inhibitors(DBusConnection *bus, enum action a) {
+#ifdef HAVE_LOGIND
+ _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
+ DBusMessageIter iter, sub, sub2;
+ int r;
+ unsigned c = 0;
+ _cleanup_strv_free_ char **sessions = NULL;
+ char **s;
+
+ if (!bus)
+ return 0;
+
+ if (arg_ignore_inhibitors || arg_force > 0)
+ return 0;
+
+ if (arg_when > 0)
+ return 0;
+
+ if (geteuid() == 0)
+ return 0;
+
+ if (!on_tty())
+ return 0;
+
+ r = bus_method_call_with_reply(
+ bus,
+ "org.freedesktop.login1",
+ "/org/freedesktop/login1",
+ "org.freedesktop.login1.Manager",
+ "ListInhibitors",
+ &reply,
+ NULL,
+ DBUS_TYPE_INVALID);
+ if (r < 0)
+ /* If logind is not around, then there are no inhibitors... */
+ return 0;