diff --git a/daemons/based/based_notify.c b/daemons/based/based_notify.c
index 7031eb9a9b..c30c41269c 100644
--- a/daemons/based/based_notify.c
+++ b/daemons/based/based_notify.c
@@ -1,222 +1,222 @@
 /*
  * Copyright 2004-2023 the Pacemaker project contributors
  *
  * The version control history for this file may have further details.
  *
  * This source code is licensed under the GNU General Public License version 2
  * or later (GPLv2+) WITHOUT ANY WARRANTY.
  */
 
 #include <crm_internal.h>
 
 #include <sys/param.h>
 #include <stdio.h>
 #include <sys/types.h>
 #include <unistd.h>
 #include <inttypes.h>           // PRIx64
 
 #include <stdlib.h>
 #include <errno.h>
 #include <fcntl.h>
 
 #include <time.h>
 
 #include <glib.h>
 #include <libxml/tree.h>
 
 #include <crm/crm.h>
 #include <crm/cib/internal.h>
 #include <crm/msg_xml.h>
 
 #include <crm/common/xml.h>
 #include <crm/common/remote_internal.h>
 #include <pacemaker-based.h>
 
 struct cib_notification_s {
-    xmlNode *msg;
+    const xmlNode *msg;
     struct iovec *iov;
     int32_t iov_size;
 };
 
 static void
 cib_notify_send_one(gpointer key, gpointer value, gpointer user_data)
 {
     const char *type = NULL;
     gboolean do_send = FALSE;
     int rc = pcmk_rc_ok;
 
     pcmk__client_t *client = value;
     struct cib_notification_s *update = user_data;
 
     if (client->ipcs == NULL && client->remote == NULL) {
         crm_warn("Skipping client with NULL channel");
         return;
     }
 
     type = crm_element_value(update->msg, F_SUBTYPE);
     CRM_LOG_ASSERT(type != NULL);
 
     if (pcmk_is_set(client->flags, cib_notify_diff)
         && pcmk__str_eq(type, T_CIB_DIFF_NOTIFY, pcmk__str_casei)) {
 
         do_send = TRUE;
 
     } else if (pcmk_is_set(client->flags, cib_notify_confirm)
                && pcmk__str_eq(type, T_CIB_UPDATE_CONFIRM, pcmk__str_casei)) {
         do_send = TRUE;
 
     } else if (pcmk_is_set(client->flags, cib_notify_pre)
                && pcmk__str_eq(type, T_CIB_PRE_NOTIFY, pcmk__str_casei)) {
         do_send = TRUE;
 
     } else if (pcmk_is_set(client->flags, cib_notify_post)
                && pcmk__str_eq(type, T_CIB_POST_NOTIFY, pcmk__str_casei)) {
 
         do_send = TRUE;
     }
 
     if (do_send) {
         switch (PCMK__CLIENT_TYPE(client)) {
             case pcmk__client_ipc:
                 rc = pcmk__ipc_send_iov(client, update->iov,
                                         crm_ipc_server_event);
                 if (rc != pcmk_rc_ok) {
                     crm_warn("Could not notify client %s: %s " CRM_XS " id=%s",
                              pcmk__client_name(client), pcmk_rc_str(rc),
                              client->id);
                 }
                 break;
 #ifdef HAVE_GNUTLS_GNUTLS_H
             case pcmk__client_tls:
 #endif
             case pcmk__client_tcp:
                 crm_debug("Sent %s notification to client %s (id %s)",
                           type, pcmk__client_name(client), client->id);
                 pcmk__remote_send_xml(client->remote, update->msg);
                 break;
             default:
                 crm_err("Unknown transport for client %s "
                         CRM_XS " flags=%#016" PRIx64,
                         pcmk__client_name(client), client->flags);
         }
     }
 }
 
 static void
-cib_notify_send(xmlNode * xml)
+cib_notify_send(const xmlNode *xml)
 {
     struct iovec *iov;
     struct cib_notification_s update;
 
     ssize_t bytes = 0;
     int rc = pcmk__ipc_prepare_iov(0, xml, 0, &iov, &bytes);
 
     if (rc == pcmk_rc_ok) {
         update.msg = xml;
         update.iov = iov;
         update.iov_size = bytes;
         pcmk__foreach_ipc_client(cib_notify_send_one, &update);
 
     } else {
         crm_notice("Could not notify clients: %s " CRM_XS " rc=%d",
                    pcmk_rc_str(rc), rc);
     }
     pcmk_free_ipc_event(iov);
 }
 
 static void
 attach_cib_generation(xmlNode *msg, const char *field, xmlNode *a_cib)
 {
     xmlNode *generation = create_xml_node(NULL, XML_CIB_TAG_GENERATION_TUPPLE);
 
     if (a_cib != NULL) {
         copy_in_properties(generation, a_cib);
     }
     add_message_xml(msg, field, generation);
     free_xml(generation);
 }
 
 void
 cib_diff_notify(const char *op, int result, const char *call_id,
                 const char *client_id, const char *client_name,
                 const char *origin, xmlNode *update, xmlNode *diff)
 {
     int add_updates = 0;
     int add_epoch = 0;
     int add_admin_epoch = 0;
 
     int del_updates = 0;
     int del_epoch = 0;
     int del_admin_epoch = 0;
 
     uint8_t log_level = LOG_TRACE;
 
     xmlNode *update_msg = NULL;
     const char *type = NULL;
 
     if (diff == NULL) {
         return;
     }
 
     if (result != pcmk_ok) {
         log_level = LOG_WARNING;
     }
 
     cib_diff_version_details(diff, &add_admin_epoch, &add_epoch, &add_updates,
                              &del_admin_epoch, &del_epoch, &del_updates);
 
     if ((add_admin_epoch != del_admin_epoch)
         || (add_epoch != del_epoch)
         || (add_updates != del_updates)) {
 
         do_crm_log(log_level,
                    "Updated CIB generation %d.%d.%d to %d.%d.%d from client "
                    "%s%s%s (%s) (%s)",
                    del_admin_epoch, del_epoch, del_updates,
                    add_admin_epoch, add_epoch, add_updates,
                    client_name,
                    ((call_id != NULL)? " call " : ""), pcmk__s(call_id, ""),
                    pcmk__s(origin, "unspecified peer"), pcmk_strerror(result));
 
     } else if ((add_admin_epoch != 0)
                || (add_epoch != 0)
                || (add_updates != 0)) {
 
         do_crm_log(log_level,
                    "Local-only change to CIB generation %d.%d.%d from client "
                    "%s%s%s (%s) (%s)",
                    add_admin_epoch, add_epoch, add_updates,
                    client_name,
                    ((call_id != NULL)? " call " : ""), pcmk__s(call_id, ""),
                    pcmk__s(origin, "unspecified peer"), pcmk_strerror(result));
     }
 
     update_msg = create_xml_node(NULL, "notify");
 
     crm_xml_add(update_msg, F_TYPE, T_CIB_NOTIFY);
     crm_xml_add(update_msg, F_SUBTYPE, T_CIB_DIFF_NOTIFY);
     crm_xml_add(update_msg, F_CIB_OPERATION, op);
     crm_xml_add(update_msg, F_CIB_CLIENTID, client_id);
     crm_xml_add(update_msg, F_CIB_CALLID, call_id);
     crm_xml_add(update_msg, F_ORIG, origin);
     crm_xml_add_int(update_msg, F_CIB_RC, result);
 
     if (update != NULL) {
         type = (const char *) update->name;
         crm_trace("Setting type to update->name: %s", type);
     } else {
         type = (const char *) diff->name;
         crm_trace("Setting type to new_obj->name: %s", type);
     }
     crm_xml_add(update_msg, F_CIB_OBJID, ID(diff));
     crm_xml_add(update_msg, F_CIB_OBJTYPE, type);
     attach_cib_generation(update_msg, "cib_generation", the_cib);
 
     if (update != NULL) {
         add_message_xml(update_msg, F_CIB_UPDATE, update);
     }
     add_message_xml(update_msg, F_CIB_UPDATE_RESULT, diff);
 
     cib_notify_send(update_msg);
     free_xml(update_msg);
 }