+extern int guestfs_mknod (guestfs_h *handle, int mode, int devmajor, int devminor, const char *path);
+extern int guestfs_mkfifo (guestfs_h *handle, int mode, const char *path);
+extern int guestfs_mknod_b (guestfs_h *handle, int mode, int devmajor, int devminor, const char *path);
+extern int guestfs_mknod_c (guestfs_h *handle, int mode, int devmajor, int devminor, const char *path);
+extern int guestfs_umask (guestfs_h *handle, int mask);