- worker_request(s->string, s->length,
- &log_fd, vlog_async_inited ? 0 : 1,
- vlog_async_write_request_cb, NULL, NULL);
- vlog_async_inited = true;
- } else {
- ignore(write(log_fd, s->string, s->length));
+ static bool in_worker_request = false;
+ if (!in_worker_request) {
+ in_worker_request = true;
+
+ worker_request(s->string, s->length,
+ &log_fd, vlog_async_inited ? 0 : 1,
+ vlog_async_write_request_cb, NULL, NULL);
+ vlog_async_inited = true;
+
+ in_worker_request = false;
+ return;
+ } else {
+ /* We've been entered recursively. This can happen if
+ * worker_request(), or a function that it calls, tries to log
+ * something. We can't call worker_request() recursively, so fall
+ * back to writing the log file directly. */
+ COVERAGE_INC(vlog_recursive);
+ }