NAME

       ausearch_add_expression - build up search expression

SYNOPSIS

       #include <auparse.h>

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

DESCRIPTION

       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 ausearch-expression(5).

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

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

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

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

RETURN VALUE

       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 NULL.

SEE ALSO

       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),
       ausearch-expression(5).

AUTHOR

       Miloslav Trmac