ausearch_add_expression(3) — Linux manual page


AUSEARCH_ADD_expression(3)     Linux Audit API    AUSEARCH_ADD_expression(3)

NAME         top

       ausearch_add_expression - build up search expression

SYNOPSIS         top

       #include <auparse.h>

       int ausearch_add_expression(auparse_state_t *au, const char
       *expression, char **error, ausearch_rule_t how);

DESCRIPTION         top

       ausearch_add_item adds an expression to the current audit search
       expression.  The search conditions can then be used to scan logs,
       files, or buffers for something of interest.  The expression
       parameter contains an expression, as specified in

       The how parameter determines how this search expression will affect
       the existing search expression, if one is already defined.  The
       possible values are:

                     Clear the current search expression, if any, and use
                     only this search expression.

                     If a search expression E is already configured, replace
                     it by (E || this_search_expression).

                     If a search expression E is already configured, replace
                     it by (E && this_search_expression).

RETURN VALUE         top

       If successful, ausearch_add_expression returns 0.  Otherwise, it
       returns -1, sets errno and it may set *error to an error message; the
       caller must free the error message using free(3).  If an error
       message is not available or can not be allocated, *error is set to

SEE ALSO         top

       ausearch_add_item(3), ausearch_add_interpreted_item(3),
       ausearch_add_timestamp_item(3), ausearch_add_regex(3),
       ausearch_set_stop(3), ausearch_clear(3), ausearch_next_event(3),

AUTHOR         top

       Miloslav Trmac

COLOPHON         top

       This page is part of the audit (Linux Audit) project.  Information
       about the project can be found at 
       ⟨⟩.  If you have a bug report
       for this manual page, send it to  This page
       was obtained from the project's upstream Git repository
       ⟨⟩ on 2020-09-18.
       (At that time, the date of the most recent commit that was found in
       the repository was 2020-09-07.)  If you discover any rendering prob‐
       lems in this HTML version of the page, or you believe there is a bet‐
       ter or more up-to-date source for the page, or you have corrections
       or improvements to the information in this COLOPHON (which is not
       part of the original manual page), send a mail to

Red Hat                           Feb 2008        AUSEARCH_ADD_expression(3)

Pages that refer to this page: ausearch_add_interpreted_item(3)ausearch_add_item(3)ausearch_add_regex(3)ausearch_add_timestamp_item(3)ausearch_add_timestamp_item_ex(3)