--- mfsclient/nbdmain.c.orig 2020-06-08 08:19:08.422379805 +0200
+++ mfsclient/nbdmain.c 2020-06-08 08:18:55.079380447 +0200
@@ -39,6 +39,7 @@
#include <errno.h>
#include <inttypes.h>
#include <pthread.h>
+#include <sys/file.h>
#ifdef HAVE_LINUX_NBD_H
#include <linux/nbd.h>