+
+.\" commit 65cfc6722361570bfe255698d9cd4dccaf47570d
+Since Linux 2.6.39, \fIpathname\fP can be an empty string, in which case the
+call operates on the file referred to by \fIdirfd\fP (which may have been
+obtained using the \fBopen\fP(2) \fBO_PATH\fP flag). In this case, \fIdirfd\fP can
+refer to any type of file, not just a directory.
+