- char buffer[1024];
- size_t len;
-
- len = vsnprintf(buffer, sizeof(buffer), str, args);
-
- if (log_syslog)
- syslog(LOG_INFO, "%s", buffer);
- else
- len = fwrite(buffer, len, 1, f_out);
+ /*
+ * buf could be NULL (not just "").
+ */
+ if (!buf)
+ return 0;
+
+ if (is_backend) {
+ size_t ret = fio_server_text_output(FIO_LOG_INFO, buf, len);
+ if (ret != -1)
+ return ret;
+ }