* devices.h: Switch FH_ZERO and FH_PORT as on Linux. Add FH_FULL.

* devices.in: Add /dev/full.
	* devices.cc: Regenerate.
	* dtable.cc (build_fh_pc): Add FH_FULL.
	* fhandler.cc (fhandler_base::fstat): Set FH_FULL permission bits
	correctly.
	* fhandler_zero.cc (fhandler_dev_zero::write): Set errno to ENOSPC
	and return -1 if device is FH_FULL.

winsup/cygwin/fhandler_zero.cc

@@ -34,6 +34,11 @@ fhandler_dev_zero::open (int flags, mode_t)
 int
 fhandler_dev_zero::write (const void *, size_t len)
 {
+  if (get_device () == FH_FULL)
+    {
+      set_errno (ENOSPC);
+      return -1;
+    }
   return len;
 }