auparse_add_callback(3) — Linux manual page

AUPARSE_ADD_CALLBACK(3)      Linux Audit API     AUPARSE_ADD_CALLBACK(3)

NAME

       auparse_add_callback - add a callback handler for notifications

SYNOPSIS

       #include <auparse.h>

       void
       auparse_add_callback(auparse_state_t *au, auparse_callback_ptr callback,
                            void *user_data, user_destroy user_destroy_func);

DESCRIPTION

       auparse_add_callback adds a callback function to the parse state
       which is invoked to notify the application of parsing events.
       This is part of the event feed API.

       The signature of the callback is:

       void
       auparse_callback(auparse_state_t *au, auparse_cb_event_t cb_event_type,
                        void *user_data);

       When the callback is invoked it is passed:

       au
               a pointer to the parse_state

       cb_event_type
              enumerated value indicating the reason why the callback
              was invoked

       user_data
              pointer to user supplied private data. May be NULL.

       user_destroy_func
              pointer to function called when user_data is destroyed.
              May be NULL.  The signature is:

              void destroy(void *user_data);

              The destroy() function should be prepared to accept
              user_data possibly being NULL.

       The cb_event_type argument indicates why the callback was
       invoked. It's possible values are:

       AUPARSE_CB_EVENT_READY
              A complete event has been parsed and is ready to be
              examined. This is logically equivalent to the parse state
              immediately following auparse_next_event()

       See auparse_feed(3) for a complete code example.

RETURN VALUE

       None.

SEE ALSO

       auparse_feed(3), auparse_flush_feed(3).

AUTHOR

       John Dennis

COLOPHON

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Red Hat                         May 2007         AUPARSE_ADD_CALLBACK(3)

Pages that refer to this page: auparse_feed(3)

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