/* information for the temporary implementation of pipes.
   PIPE: has the big disadvantage that it blocks in the most unpleasent
   situations, and doesn't send SIGPIPE to processes that write on
   readerless pipes. Unacceptable for this library ;-)) */

#define PIPE_SIZE	5120

struct tmp_pipe {
  u_short	tp_flags;		/* see below */
  u_char	tp_buffer[PIPE_SIZE];
  u_char	*tp_reader, *tp_writer;	/* buffer pointers.
					   when tp_reader==tp_writer, no data
					   is available */
};