--- a/pym/portage/process.py	
+++ a/pym/portage/process.py	
@@ -39,7 +39,7 @@ for _fd_dir in ("/proc/self/fd", "/dev/fd"):
 	else:
 		_fd_dir = None
 
-if _fd_dir is not None:
+if _fd_dir is not None and platform.system() not in ('FreeBSD',):
 	def get_open_fds():
 		return (int(fd) for fd in os.listdir(_fd_dir) if fd.isdigit())