+#define SIGNALS_IGNORE SIGPIPE
+
+#define DIGITS "0123456789"
+#define LOWERCASE_LETTERS "abcdefghijklmnopqrstuvwxyz"
+#define UPPERCASE_LETTERS "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+#define LETTERS LOWERCASE_LETTERS UPPERCASE_LETTERS
+
+#define REBOOT_PARAM_FILE "/run/systemd/reboot-param"