SYNOPSIS

       #include <ieee1284.h>


       int ieee1284_ref (struct parport *port);

       int ieee1284_unref (struct parport *port);

DESCRIPTION

       If you want to free the port list from ieee1284_find_ports but open one
       of the ports later on, you will need to prevent it from being destroyed
       in  ieee1284_free_ports.  Each  port has a reference count, and you can
       use ieee1284_ref to increment it and ieee1284_unref to decrement it.


       If you use ieee1284_ref at any stage, you must later call  ieee1284_un-
       ref  to  relinquish the extra reference. If you do not do this, the re-
       sources associated with the port will not be cleaned up.


       If you have not previously used ieee1284_ref on a port,  you  must  not
       use ieee1284_unref on it.

RETURN VALUE

       These  functions  return the number of references held after the incre-
       ment or decrement.

SEE ALSO

       ieee1284_open(3)

AUTHOR

       Tim Waugh <twaugh@redhat.com>.



                                                               IEEE1284_REF(3)