+
+# else /* not F_CHSIZE nor F_FREESP nor HAVE_CHSIZE */
+
+# include <errno.h>
+# ifndef errno
+extern int errno;
+# endif
+
+int
+ftruncate (int fd, off_t length)
+{
+ errno = EIO;
+ return -1;
+}
+
+# endif /* not HAVE_CHSIZE */
+# endif /* not F_FREESP */
+#endif /* not F_CHSIZE */