audit: use existing session info function

Use the existing audit_log_session_info() function rather than
hardcoding its functionality.
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>

kernel/auditfilter.c

@@ -1089,8 +1089,6 @@ static void audit_list_rules(int seq, struct sk_buff_head *q)
 static void audit_log_rule_change(char *action, struct audit_krule *rule, int res)
 {
 	struct audit_buffer *ab;
-	uid_t loginuid = from_kuid(&init_user_ns, audit_get_loginuid(current));
-	unsigned int sessionid = audit_get_sessionid(current);
 
 	if (!audit_enabled)
 		return;
@@ -1098,7 +1096,7 @@ static void audit_log_rule_change(char *action, struct audit_krule *rule, int re
 	ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_CONFIG_CHANGE);
 	if (!ab)
 		return;
-	audit_log_format(ab, "auid=%u ses=%u" ,loginuid, sessionid);
+	audit_log_session_info(ab);
 	audit_log_task_context(ab);
 	audit_log_format(ab, " op=%s", action);
 	audit_log_key(ab, rule->filterkey);