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gensio_set_callback(3) Library Functions Manual gensio_set_callback(3)

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