--- lib/ext2fs/ext2fs.h.orig	2012-01-12 21:38:40.769873730 -0500
+++ lib/ext2fs/ext2fs.h	2012-01-12 21:39:38.197155791 -0500
@@ -60,6 +60,7 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
+#include <unistd.h>
 
 #ifndef __USE_XOPEN2K
 /* If the "#define _XOPEN_SOURCE 600" didn't succeed in declaring