NAME

       gensio_set_callback,  gensio_get_user_data,  gensio_set_user_data - Set the event callback
       and user data for a gensio

SYNOPSIS

       #include <gensio/gensio.h>

       void gensio_set_callback(struct gensio *io,
                           gensio_event cb, void *user_data)

       void gensio_set_user_data(struct gensio *io, void *user_data);

       void *gensio_get_user_data(struct gensio *io)

DESCRIPTION

       gensio_set_callback sets the event handler and data for the gensio.  This must be done  in
       the   GENSIO_ACC_EVENT_NEW_CONNECTION  event  from  a  gensio_accepter  before  any  other
       operation is done on the gensio.  The only exception is that gensio_close  may  be  called
       with  callbacks  not set.  This function may be called again if the gensio cannot generate
       any callbacks, generally after it has been closed.  Otherwise race conditions may occur.

       gensio_set_user_data Just sets the user_data field in the gensio.  If this is called  when
       the gensio is running, race conditions may occur.

       gensio_get_user_data  Return the user data passed in with the gensio was created or set by
       one of the above two functions.

SEE ALSO

       gensio(5), gensio_event(3), gensio_accepter_event(3)

                                           23 Feb 2019                     gensio_set_callback(3)