+char *journal_make_match_string(sd_journal *j);
+void journal_print_header(sd_journal *j);
+
+static inline void journal_closep(sd_journal **j) {
+ sd_journal_close(*j);
+}
+
+#define _cleanup_journal_close_ _cleanup_(journal_closep)
+
+#define JOURNAL_FOREACH_DATA_RETVAL(j, data, l, retval) \
+ for (sd_journal_restart_data(j); ((retval) = sd_journal_enumerate_data((j), &(data), &(l))) > 0; )