logind: Introduce RebootWithFlags and others

Add new systemd-logind WithFlags version for Reboot and others. These
methods add a unit64 parameter, with which can send additional control flags.

src/basic/login-util.h

@@ -4,6 +4,14 @@
 #include <stdbool.h>
 #include <unistd.h>
 
+#define SD_LOGIND_ROOT_CHECK_INHIBITORS           (UINT64_C(1) << 0)
+
+/* For internal use only */
+#define SD_LOGIND_INTERACTIVE                     (UINT64_C(1) << 63)
+
+#define SD_LOGIND_SHUTDOWN_AND_SLEEP_FLAGS_PUBLIC (SD_LOGIND_ROOT_CHECK_INHIBITORS)
+#define SD_LOGIND_SHUTDOWN_AND_SLEEP_FLAGS_ALL    (SD_LOGIND_ROOT_CHECK_INHIBITORS|SD_LOGIND_INTERACTIVE)
+
 bool session_id_valid(const char *id);
 
 static inline bool logind_running(void) {