Adding upstream version 2.1.7.upstream/2.1.7

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

12 files changed, 850 insertions, 985 deletions

diff --git a/daemons/based/Makefile.am b/daemons/based/Makefile.am
index 053d93c..022fc47 100644
--- a/daemons/based/Makefile.am
+++ b/daemons/based/Makefile.am
@@ -1,5 +1,5 @@
 #
-# Copyright 2004-2021 the Pacemaker project contributors
+# Copyright 2004-2023 the Pacemaker project contributors
 #
 # The version control history for this file may have further details.
 #
@@ -13,35 +13,37 @@ EXTRA_DIST	= cib.pam
 
 halibdir	= $(CRM_DAEMON_DIR)
 
-COMMONLIBS	= $(top_builddir)/lib/common/libcrmcommon.la \
-		$(top_builddir)/lib/cib/libcib.la
-
 halib_PROGRAMS	= pacemaker-based
 
-noinst_HEADERS	= pacemaker-based.h
+noinst_HEADERS	= based_transaction.h \
+		  pacemaker-based.h
 
 pacemaker_based_CFLAGS	= $(CFLAGS_HARDENED_EXE)
 pacemaker_based_LDFLAGS	= $(LDFLAGS_HARDENED_EXE)
 
-pacemaker_based_LDADD	= $(top_builddir)/lib/cluster/libcrmcluster.la \
-			  $(COMMONLIBS) $(CLUSTERLIBS)
-
-pacemaker_based_SOURCES	= pacemaker-based.c \
-			  based_callbacks.c \
-			  based_common.c \
-			  based_io.c \
-			  based_messages.c \
-			  based_notify.c \
-			  based_remote.c
-
-clean-generic:
-	rm -f *.log *.debug *.xml *~
-
-if BUILD_LEGACY_LINKS
+pacemaker_based_LDADD = $(top_builddir)/lib/cluster/libcrmcluster.la
+pacemaker_based_LDADD += $(top_builddir)/lib/cib/libcib.la
+pacemaker_based_LDADD += $(top_builddir)/lib/common/libcrmcommon.la
+pacemaker_based_LDADD += $(CLUSTERLIBS)
+
+pacemaker_based_SOURCES	= pacemaker-based.c 	\
+			  based_callbacks.c 	\
+			  based_io.c 		\
+			  based_messages.c 	\
+			  based_notify.c 	\
+			  based_operation.c 	\
+			  based_remote.c 	\
+			  based_transaction.c
+
+.PHONY: install-exec-hook
 install-exec-hook:
+if BUILD_LEGACY_LINKS
 	$(MKDIR_P) -- $(DESTDIR)$(CRM_DAEMON_DIR)
 	cd $(DESTDIR)$(CRM_DAEMON_DIR) && rm -f cib && $(LN_S) pacemaker-based cib
+endif
 
+.PHONY: uninstall-hook
 uninstall-hook:
+if BUILD_LEGACY_LINKS
 	cd $(DESTDIR)$(CRM_DAEMON_DIR) && rm -f cib
 endif
diff --git a/daemons/based/based_callbacks.c b/daemons/based/based_callbacks.c
index 3726caa..4fac222 100644
--- a/daemons/based/based_callbacks.c
+++ b/daemons/based/based_callbacks.c
@@ -20,6 +20,9 @@
 #include <fcntl.h>
 #include <inttypes.h>   // PRIu64
 
+#include <glib.h>
+#include <libxml/tree.h>
+
 #include <crm/crm.h>
 #include <crm/cib.h>
 #include <crm/msg_xml.h>
@@ -31,7 +34,6 @@
 #include <pacemaker-based.h>
 
 #define EXIT_ESCALATION_MS 10000
-#define OUR_NODENAME (stand_alone? "localhost" : crm_cluster->uname)
 
 static unsigned long cib_local_bcast_num = 0;
 
@@ -50,11 +52,10 @@ qb_ipcs_service_t *ipcs_ro = NULL;
 qb_ipcs_service_t *ipcs_rw = NULL;
 qb_ipcs_service_t *ipcs_shm = NULL;
 
-static void cib_process_request(xmlNode *request, gboolean privileged,
-                                const pcmk__client_t *cib_client);
-
-static int cib_process_command(xmlNode *request, xmlNode **reply,
-                               xmlNode **cib_diff, gboolean privileged);
+static int cib_process_command(xmlNode *request,
+                               const cib__operation_t *operation,
+                               cib__op_fn_t op_function, xmlNode **reply,
+                               xmlNode **cib_diff, bool privileged);
 
 static gboolean cib_common_callback(qb_ipcs_connection_t *c, void *data,
                                     size_t size, gboolean privileged);
@@ -138,11 +139,130 @@ struct qb_ipcs_service_handlers ipc_rw_callbacks = {
     .connection_destroyed = cib_ipc_destroy
 };
 
+/*!
+ * \internal
+ * \brief Create reply XML for a CIB request
+ *
+ * \param[in] op            CIB operation type
+ * \param[in] call_id       CIB call ID
+ * \param[in] client_id     CIB client ID
+ * \param[in] call_options  Group of <tt>enum cib_call_options</tt> flags
+ * \param[in] rc            Request return code
+ * \param[in] call_data     Request output data
+ *
+ * \return Reply XML
+ *
+ * \note The caller is responsible for freeing the return value using
+ *       \p free_xml().
+ */
+static xmlNode *
+create_cib_reply(const char *op, const char *call_id, const char *client_id,
+                 int call_options, int rc, xmlNode *call_data)
+{
+    xmlNode *reply = create_xml_node(NULL, "cib-reply");
+
+    CRM_ASSERT(reply != NULL);
+
+    crm_xml_add(reply, F_TYPE, T_CIB);
+    crm_xml_add(reply, F_CIB_OPERATION, op);
+    crm_xml_add(reply, F_CIB_CALLID, call_id);
+    crm_xml_add(reply, F_CIB_CLIENTID, client_id);
+    crm_xml_add_int(reply, F_CIB_CALLOPTS, call_options);
+    crm_xml_add_int(reply, F_CIB_RC, rc);
+
+    if (call_data != NULL) {
+        crm_trace("Attaching reply output");
+        add_message_xml(reply, F_CIB_CALLDATA, call_data);
+    }
+
+    crm_log_xml_explicit(reply, "cib:reply");
+    return reply;
+}
+
+static void
+do_local_notify(const xmlNode *notify_src, const char *client_id,
+                bool sync_reply, bool from_peer)
+{
+    int rid = 0;
+    int call_id = 0;
+    pcmk__client_t *client_obj = NULL;
+
+    CRM_ASSERT(notify_src && client_id);
+
+    crm_element_value_int(notify_src, F_CIB_CALLID, &call_id);
+
+    client_obj = pcmk__find_client_by_id(client_id);
+    if (client_obj == NULL) {
+        crm_debug("Could not send response %d: client %s not found",
+                  call_id, client_id);
+        return;
+    }
+
+    if (sync_reply) {
+        if (client_obj->ipcs) {
+            CRM_LOG_ASSERT(client_obj->request_id);
+
+            rid = client_obj->request_id;
+            client_obj->request_id = 0;
+
+            crm_trace("Sending response %d to client %s%s",
+                      rid, pcmk__client_name(client_obj),
+                      (from_peer? " (originator of delegated request)" : ""));
+        } else {
+            crm_trace("Sending response (call %d) to client %s%s",
+                      call_id, pcmk__client_name(client_obj),
+                      (from_peer? " (originator of delegated request)" : ""));
+        }
+
+    } else {
+        crm_trace("Sending event %d to client %s%s",
+                  call_id, pcmk__client_name(client_obj),
+                  (from_peer? " (originator of delegated request)" : ""));
+    }
+
+    switch (PCMK__CLIENT_TYPE(client_obj)) {
+        case pcmk__client_ipc:
+            {
+                int rc = pcmk__ipc_send_xml(client_obj, rid, notify_src,
+                                            (sync_reply? crm_ipc_flags_none
+                                             : crm_ipc_server_event));
+
+                if (rc != pcmk_rc_ok) {
+                    crm_warn("%s reply to client %s failed: %s " CRM_XS " rc=%d",
+                             (sync_reply? "Synchronous" : "Asynchronous"),
+                             pcmk__client_name(client_obj), pcmk_rc_str(rc),
+                             rc);
+                }
+            }
+            break;
+#ifdef HAVE_GNUTLS_GNUTLS_H
+        case pcmk__client_tls:
+#endif
+        case pcmk__client_tcp:
+            pcmk__remote_send_xml(client_obj->remote, notify_src);
+            break;
+        default:
+            crm_err("Unknown transport for client %s "
+                    CRM_XS " flags=%#016" PRIx64,
+                    pcmk__client_name(client_obj), client_obj->flags);
+    }
+}
+
 void
 cib_common_callback_worker(uint32_t id, uint32_t flags, xmlNode * op_request,
                            pcmk__client_t *cib_client, gboolean privileged)
 {
     const char *op = crm_element_value(op_request, F_CIB_OPERATION);
+    int call_options = cib_none;
+
+    crm_element_value_int(op_request, F_CIB_CALLOPTS, &call_options);
+
+    /* Requests with cib_transaction set should not be sent to based directly
+     * (outside of a commit-transaction request)
+     */
+    if (pcmk_is_set(call_options, cib_transaction)) {
+        return;
+    }
 
     if (pcmk__str_eq(op, CRM_OP_REGISTER, pcmk__str_none)) {
         if (flags & crm_ipc_client_response) {
@@ -180,9 +300,6 @@ cib_common_callback_worker(uint32_t id, uint32_t flags, xmlNode * op_request,
         } else if (pcmk__str_eq(type, T_CIB_DIFF_NOTIFY, pcmk__str_casei)) {
             bit = cib_notify_diff;
 
-        } else if (pcmk__str_eq(type, T_CIB_REPLACE_NOTIFY, pcmk__str_casei)) {
-            bit = cib_notify_replace;
-
         } else {
             status = CRM_EX_INVALID_PARAM;
         }
@@ -354,9 +471,7 @@ process_ping_reply(xmlNode *reply)
             if(remote_cib && remote_cib->children) {
                 // Additional debug
                 xml_calculate_changes(the_cib, remote_cib);
-
-                pcmk__output_set_log_level(logger_out, LOG_INFO);
-                pcmk__xml_show_changes(logger_out, remote_cib);
+                pcmk__log_xml_changes(LOG_INFO, remote_cib);
                 crm_trace("End of differences");
             }
 
@@ -367,75 +482,6 @@ process_ping_reply(xmlNode *reply)
 }
 
 static void
-do_local_notify(xmlNode * notify_src, const char *client_id,
-                gboolean sync_reply, gboolean from_peer)
-{
-    int rid = 0;
-    int call_id = 0;
-    pcmk__client_t *client_obj = NULL;
-
-    CRM_ASSERT(notify_src && client_id);
-
-    crm_element_value_int(notify_src, F_CIB_CALLID, &call_id);
-
-    client_obj = pcmk__find_client_by_id(client_id);
-    if (client_obj == NULL) {
-        crm_debug("Could not send response %d: client %s not found",
-                  call_id, client_id);
-        return;
-    }
-
-    if (sync_reply) {
-        if (client_obj->ipcs) {
-            CRM_LOG_ASSERT(client_obj->request_id);
-
-            rid = client_obj->request_id;
-            client_obj->request_id = 0;
-
-            crm_trace("Sending response %d to client %s%s",
-                      rid, pcmk__client_name(client_obj),
-                      (from_peer? " (originator of delegated request)" : ""));
-        } else {
-            crm_trace("Sending response (call %d) to client %s%s",
-                      call_id, pcmk__client_name(client_obj),
-                      (from_peer? " (originator of delegated request)" : ""));
-        }
-
-    } else {
-        crm_trace("Sending event %d to client %s%s",
-                  call_id, pcmk__client_name(client_obj),
-                  (from_peer? " (originator of delegated request)" : ""));
-    }
-
-    switch (PCMK__CLIENT_TYPE(client_obj)) {
-        case pcmk__client_ipc:
-            {
-                int rc = pcmk__ipc_send_xml(client_obj, rid, notify_src,
-                                            (sync_reply? crm_ipc_flags_none
-                                             : crm_ipc_server_event));
-
-                if (rc != pcmk_rc_ok) {
-                    crm_warn("%s reply to client %s failed: %s " CRM_XS " rc=%d",
-                             (sync_reply? "Synchronous" : "Asynchronous"),
-                             pcmk__client_name(client_obj), pcmk_rc_str(rc),
-                             rc);
-                }
-            }
-            break;
-#ifdef HAVE_GNUTLS_GNUTLS_H
-        case pcmk__client_tls:
-#endif
-        case pcmk__client_tcp:
-            pcmk__remote_send_xml(client_obj->remote, notify_src);
-            break;
-        default:
-            crm_err("Unknown transport for client %s "
-                    CRM_XS " flags=%#016" PRIx64,
-                    pcmk__client_name(client_obj), client_obj->flags);
-    }
-}
-
-static void
 local_notify_destroy_callback(gpointer data)
 {
     cib_local_notify_t *notify = data;
@@ -448,7 +494,7 @@ local_notify_destroy_callback(gpointer data)
 static void
 check_local_notify(int bcast_id)
 {
-    cib_local_notify_t *notify = NULL;
+    const cib_local_notify_t *notify = NULL;
 
     if (!local_notify_queue) {
         return;
@@ -483,13 +529,14 @@ queue_local_notify(xmlNode * notify_src, const char *client_id, gboolean sync_re
 }
 
 static void
-parse_local_options_v1(const pcmk__client_t *cib_client, int call_type,
-                       int call_options, const char *host, const char *op,
-                       gboolean *local_notify, gboolean *needs_reply,
-                       gboolean *process, gboolean *needs_forward)
+parse_local_options_v1(const pcmk__client_t *cib_client,
+                       const cib__operation_t *operation, int call_options,
+                       const char *host, const char *op, gboolean *local_notify,
+                       gboolean *needs_reply, gboolean *process,
+                       gboolean *needs_forward)
 {
-    if (cib_op_modifies(call_type)
-        && !(call_options & cib_inhibit_bcast)) {
+    if (pcmk_is_set(operation->flags, cib__op_attr_modifies)
+        && !pcmk_is_set(call_options, cib_inhibit_bcast)) {
         /* we need to send an update anyway */
         *needs_reply = TRUE;
     } else {
@@ -526,78 +573,87 @@ parse_local_options_v1(const pcmk__client_t *cib_client, int call_type,
 }
 
 static void
-parse_local_options_v2(const pcmk__client_t *cib_client, int call_type,
-                       int call_options, const char *host, const char *op,
-                       gboolean *local_notify, gboolean *needs_reply,
-                       gboolean *process, gboolean *needs_forward)
+parse_local_options_v2(const pcmk__client_t *cib_client,
+                       const cib__operation_t *operation, int call_options,
+                       const char *host, const char *op, gboolean *local_notify,
+                       gboolean *needs_reply, gboolean *process,
+                       gboolean *needs_forward)
 {
-    if (cib_op_modifies(call_type)) {
-        if (pcmk__str_any_of(op, PCMK__CIB_REQUEST_PRIMARY,
-                             PCMK__CIB_REQUEST_SECONDARY, NULL)) {
-            /* Always handle these locally */
-            *process = TRUE;
-            *needs_reply = FALSE;
-            *local_notify = TRUE;
-            *needs_forward = FALSE;
-            return;
-
-        } else {
-            /* Redirect all other updates via CPG */
-            *needs_reply = TRUE;
-            *needs_forward = TRUE;
-            *process = FALSE;
-            crm_trace("%s op from %s needs to be forwarded to client %s",
-                      op, pcmk__client_name(cib_client),
-                      pcmk__s(host, "the primary instance"));
-            return;
-        }
-    }
-
-
+    // Process locally and notify local client
     *process = TRUE;
     *needs_reply = FALSE;
     *local_notify = TRUE;
     *needs_forward = FALSE;
 
-    if (stand_alone) {
-        crm_trace("Processing %s op from client %s (stand-alone)",
+    if (pcmk_is_set(operation->flags, cib__op_attr_local)) {
+        /* Always process locally if cib__op_attr_local is set.
+         *
+         * @COMPAT: Currently host is ignored. At a compatibility break, throw
+         * an error (from cib_process_request() or earlier) if host is not NULL or
+         * OUR_NODENAME.
+         */
+        crm_trace("Processing always-local %s op from client %s",
                   op, pcmk__client_name(cib_client));
 
-    } else if (host == NULL) {
-        crm_trace("Processing unaddressed %s op from client %s",
-                  op, pcmk__client_name(cib_client));
+        if (!pcmk__str_eq(host, OUR_NODENAME,
+                          pcmk__str_casei|pcmk__str_null_matches)) {
 
-    } else if (pcmk__str_eq(host, OUR_NODENAME, pcmk__str_casei)) {
-        crm_trace("Processing locally addressed %s op from client %s",
+            crm_warn("Operation '%s' is always local but its target host is "
+                     "set to '%s'",
+                     op, host);
+        }
+        return;
+    }
+
+    if (pcmk_is_set(operation->flags, cib__op_attr_modifies)
+        || !pcmk__str_eq(host, OUR_NODENAME,
+                         pcmk__str_casei|pcmk__str_null_matches)) {
+
+        // Forward modifying and non-local requests via cluster
+        *process = FALSE;
+        *needs_reply = FALSE;
+        *local_notify = FALSE;
+        *needs_forward = TRUE;
+
+        crm_trace("%s op from %s needs to be forwarded to %s",
+                  op, pcmk__client_name(cib_client),
+                  pcmk__s(host, "all nodes"));
+        return;
+    }
+
+    if (stand_alone) {
+        crm_trace("Processing %s op from client %s (stand-alone)",
                   op, pcmk__client_name(cib_client));
 
     } else {
-        crm_trace("%s op from %s needs to be forwarded to client %s",
-                  op, pcmk__client_name(cib_client), host);
-        *needs_forward = TRUE;
-        *process = FALSE;
+        crm_trace("Processing %saddressed %s op from client %s",
+                  ((host != NULL)? "locally " : "un"),
+                  op, pcmk__client_name(cib_client));
     }
 }
 
 static void
-parse_local_options(const pcmk__client_t *cib_client, int call_type,
-                    int call_options, const char *host, const char *op,
-                    gboolean *local_notify, gboolean *needs_reply,
-                    gboolean *process, gboolean *needs_forward)
+parse_local_options(const pcmk__client_t *cib_client,
+                    const cib__operation_t *operation, int call_options,
+                    const char *host, const char *op, gboolean *local_notify,
+                    gboolean *needs_reply, gboolean *process,
+                    gboolean *needs_forward)
 {
     if(cib_legacy_mode()) {
-        parse_local_options_v1(cib_client, call_type, call_options, host,
-                               op, local_notify, needs_reply, process, needs_forward);
+        parse_local_options_v1(cib_client, operation, call_options, host,
+                               op, local_notify, needs_reply, process,
+                               needs_forward);
     } else {
-        parse_local_options_v2(cib_client, call_type, call_options, host,
-                               op, local_notify, needs_reply, process, needs_forward);
+        parse_local_options_v2(cib_client, operation, call_options, host,
+                               op, local_notify, needs_reply, process,
+                               needs_forward);
     }
 }
 
 static gboolean
-parse_peer_options_v1(int call_type, xmlNode * request,
-                   gboolean * local_notify, gboolean * needs_reply, gboolean * process,
-                   gboolean * needs_forward)
+parse_peer_options_v1(const cib__operation_t *operation, xmlNode *request,
+                      gboolean *local_notify, gboolean *needs_reply,
+                      gboolean *process)
 {
     const char *op = NULL;
     const char *host = NULL;
@@ -620,7 +676,8 @@ parse_peer_options_v1(int call_type, xmlNode * request,
     }
 
     op = crm_element_value(request, F_CIB_OPERATION);
-    crm_trace("Processing %s request sent by %s", op, originator);
+    crm_trace("Processing legacy %s request sent by %s", op, originator);
+
     if (pcmk__str_eq(op, PCMK__CIB_REQUEST_SHUTDOWN, pcmk__str_none)) {
         /* Always process these */
         *local_notify = FALSE;
@@ -693,9 +750,9 @@ parse_peer_options_v1(int call_type, xmlNode * request,
 }
 
 static gboolean
-parse_peer_options_v2(int call_type, xmlNode * request,
-                   gboolean * local_notify, gboolean * needs_reply, gboolean * process,
-                   gboolean * needs_forward)
+parse_peer_options_v2(const cib__operation_t *operation, xmlNode *request,
+                      gboolean *local_notify, gboolean *needs_reply,
+                      gboolean *process)
 {
     const char *host = NULL;
     const char *delegated = crm_element_value(request, F_CIB_DELEGATED);
@@ -705,6 +762,10 @@ parse_peer_options_v2(int call_type, xmlNode * request,
 
     gboolean is_reply = pcmk__str_eq(reply_to, OUR_NODENAME, pcmk__str_casei);
 
+    if (originator == NULL) { // Shouldn't be possible
+        originator = "peer";
+    }
+
     if (pcmk__str_eq(op, PCMK__CIB_REQUEST_REPLACE, pcmk__str_none)) {
         /* sync_our_cib() sets F_CIB_ISREPLY */
         if (reply_to) {
@@ -734,10 +795,10 @@ parse_peer_options_v2(int call_type, xmlNode * request,
         const char *max = crm_element_value(request, F_CIB_SCHEMA_MAX);
         const char *upgrade_rc = crm_element_value(request, F_CIB_UPGRADE_RC);
 
-        crm_trace("Parsing %s operation%s for %s with max=%s and upgrade_rc=%s",
-                  op, (is_reply? " reply" : ""),
+        crm_trace("Parsing upgrade %s for %s with max=%s and upgrade_rc=%s",
+                  (is_reply? "reply" : "request"),
                   (based_is_primary? "primary" : "secondary"),
-                  (max? max : "none"), (upgrade_rc? upgrade_rc : "none"));
+                  pcmk__s(max, "none"), pcmk__s(upgrade_rc, "none"));
 
         if (upgrade_rc != NULL) {
             // Our upgrade request was rejected by DC, notify clients of result
@@ -752,7 +813,7 @@ parse_peer_options_v2(int call_type, xmlNode * request,
             goto skip_is_reply;
 
         } else {
-            // Ignore broadcast client requests when we're not DC
+            // Ignore broadcast client requests when we're not primary
             return FALSE;
         }
 
@@ -762,22 +823,25 @@ parse_peer_options_v2(int call_type, xmlNode * request,
         legacy_mode = TRUE;
         return FALSE;
 
-    } else if (is_reply && cib_op_modifies(call_type)) {
+    } else if (is_reply
+               && pcmk_is_set(operation->flags, cib__op_attr_modifies)) {
         crm_trace("Ignoring legacy %s reply sent from %s to local clients", op, originator);
         return FALSE;
 
     } else if (pcmk__str_eq(op, PCMK__CIB_REQUEST_SHUTDOWN, pcmk__str_none)) {
-        /* Legacy handling */
-        crm_debug("Legacy handling of %s message from %s", op, originator);
         *local_notify = FALSE;
         if (reply_to == NULL) {
             *process = TRUE;
+        } else { // Not possible?
+            crm_debug("Ignoring shutdown request from %s because reply_to=%s",
+                      originator, reply_to);
         }
         return *process;
     }
 
-    if(is_reply) {
-        crm_trace("Handling %s reply sent from %s to local clients", op, originator);
+    if (is_reply) {
+        crm_trace("Will notify local clients for %s reply from %s",
+                  op, originator);
         *process = FALSE;
         *needs_reply = FALSE;
         *local_notify = TRUE;
@@ -797,62 +861,78 @@ parse_peer_options_v2(int call_type, xmlNode * request,
         return TRUE;
 
     } else if (host != NULL) {
-        /* this is for a specific instance and we're not it */
-        crm_trace("Ignoring %s operation for instance on %s", op, host);
+        crm_trace("Ignoring %s request intended for CIB manager on %s",
+                  op, host);
         return FALSE;
 
     } else if(is_reply == FALSE && pcmk__str_eq(op, CRM_OP_PING, pcmk__str_casei)) {
         *needs_reply = TRUE;
     }
 
-    crm_trace("Processing %s request sent to everyone by %s/%s on %s %s", op,
-              crm_element_value(request, F_CIB_CLIENTNAME),
-              crm_element_value(request, F_CIB_CALLID),
-              originator, (*local_notify)?"(notify)":"");
+    crm_trace("Processing %s request broadcast by %s call %s on %s "
+              "(local clients will%s be notified)", op,
+              pcmk__s(crm_element_value(request, F_CIB_CLIENTNAME), "client"),
+              pcmk__s(crm_element_value(request, F_CIB_CALLID), "without ID"),
+              originator, (*local_notify? "" : "not"));
     return TRUE;
 }
 
 static gboolean
-parse_peer_options(int call_type, xmlNode * request,
-                   gboolean * local_notify, gboolean * needs_reply, gboolean * process,
-                   gboolean * needs_forward)
+parse_peer_options(const cib__operation_t *operation, xmlNode *request,
+                   gboolean *local_notify, gboolean *needs_reply,
+                   gboolean *process)
 {
     /* TODO: What happens when an update comes in after node A
      * requests the CIB from node B, but before it gets the reply (and
      * sends out the replace operation)
      */
     if(cib_legacy_mode()) {
-        return parse_peer_options_v1(
-            call_type, request, local_notify, needs_reply, process, needs_forward);
+        return parse_peer_options_v1(operation, request, local_notify,
+                                     needs_reply, process);
     } else {
-        return parse_peer_options_v2(
-            call_type, request, local_notify, needs_reply, process, needs_forward);
+        return parse_peer_options_v2(operation, request, local_notify,
+                                     needs_reply, process);
     }
 }
 
+/*!
+ * \internal
+ * \brief Forward a CIB request to the appropriate target host(s)
+ *
+ * \param[in] request  CIB request to forward
+ */
 static void
-forward_request(xmlNode *request, int call_options)
+forward_request(xmlNode *request)
 {
     const char *op = crm_element_value(request, F_CIB_OPERATION);
+    const char *section = crm_element_value(request, F_CIB_SECTION);
     const char *host = crm_element_value(request, F_CIB_HOST);
+    const char *originator = crm_element_value(request, F_ORIG);
+    const char *client_name = crm_element_value(request, F_CIB_CLIENTNAME);
+    const char *call_id = crm_element_value(request, F_CIB_CALLID);
 
-    crm_xml_add(request, F_CIB_DELEGATED, OUR_NODENAME);
-
-    if (host != NULL) {
-        crm_trace("Forwarding %s op to %s", op, host);
-        send_cluster_message(crm_get_peer(0, host), crm_msg_cib, request, FALSE);
+    int log_level = LOG_INFO;
 
-    } else {
-        crm_trace("Forwarding %s op to primary instance", op);
-        send_cluster_message(NULL, crm_msg_cib, request, FALSE);
+    if (pcmk__str_eq(op, PCMK__CIB_REQUEST_NOOP, pcmk__str_none)) {
+        log_level = LOG_DEBUG;
     }
 
-    /* Return the request to its original state */
-    xml_remove_prop(request, F_CIB_DELEGATED);
+    do_crm_log(log_level,
+               "Forwarding %s operation for section %s to %s (origin=%s/%s/%s)",
+               pcmk__s(op, "invalid"),
+               pcmk__s(section, "all"),
+               pcmk__s(host, (cib_legacy_mode()? "primary" : "all")),
+               pcmk__s(originator, "local"),
+               pcmk__s(client_name, "unspecified"),
+               pcmk__s(call_id, "unspecified"));
 
-    if (call_options & cib_discard_reply) {
-        crm_trace("Client not interested in reply");
-    }
+    crm_xml_add(request, F_CIB_DELEGATED, OUR_NODENAME);
+
+    send_cluster_message(((host != NULL)? crm_get_peer(0, host) : NULL),
+                         crm_msg_cib, request, FALSE);
+
+    // Return the request to its original state
+    xml_remove_prop(request, F_CIB_DELEGATED);
 }
 
 static gboolean
@@ -861,9 +941,10 @@ send_peer_reply(xmlNode * msg, xmlNode * result_diff, const char *originator, gb
     CRM_ASSERT(msg != NULL);
 
     if (broadcast) {
-        /* this (successful) call modified the CIB _and_ the
-         * change needs to be broadcast...
-         *   send via HA to other nodes
+        /* @COMPAT: Legacy code
+         *
+         * This successful call modified the CIB, and the change needs to be
+         * broadcast (sent via cluster to all nodes).
          */
         int diff_add_updates = 0;
         int diff_add_epoch = 0;
@@ -878,7 +959,7 @@ send_peer_reply(xmlNode * msg, xmlNode * result_diff, const char *originator, gb
 
         CRM_LOG_ASSERT(result_diff != NULL);
         digest = crm_element_value(result_diff, XML_ATTR_DIGEST);
-        crm_element_value_int(result_diff, "format", &format);
+        crm_element_value_int(result_diff, PCMK_XA_FORMAT, &format);
 
         cib_diff_version_details(result_diff,
                                  &diff_add_admin_epoch, &diff_add_epoch, &diff_add_updates,
@@ -919,12 +1000,14 @@ send_peer_reply(xmlNode * msg, xmlNode * result_diff, const char *originator, gb
  * \param[in] privileged         Whether privileged commands may be run
  *                               (see cib_server_ops[] definition)
  * \param[in] cib_client         IPC client that sent request (or NULL if CPG)
+ *
+ * \return Legacy Pacemaker return code
  */
-static void
+int
 cib_process_request(xmlNode *request, gboolean privileged,
                     const pcmk__client_t *cib_client)
 {
-    int call_type = 0;
+    // @TODO: Break into multiple smaller functions
     int call_options = 0;
 
     gboolean process = TRUE;        // Whether to process request locally now
@@ -946,12 +1029,16 @@ cib_process_request(xmlNode *request, gboolean privileged,
     const char *client_name = crm_element_value(request, F_CIB_CLIENTNAME);
     const char *reply_to = crm_element_value(request, F_CIB_ISREPLY);
 
+    const cib__operation_t *operation = NULL;
+    cib__op_fn_t op_function = NULL;
+
     crm_element_value_int(request, F_CIB_CALLOPTS, &call_options);
 
     if ((host != NULL) && (*host == '\0')) {
         host = NULL;
     }
 
+    // @TODO: Improve trace messages. Target is accurate only for legacy mode.
     if (host) {
         target = host;
 
@@ -970,72 +1057,68 @@ cib_process_request(xmlNode *request, gboolean privileged,
         crm_trace("Processing local %s operation from %s/%s intended for %s", op, client_name, call_id, target);
     }
 
-    rc = cib_get_operation_id(op, &call_type);
+    rc = cib__get_operation(op, &operation);
+    rc = pcmk_rc2legacy(rc);
     if (rc != pcmk_ok) {
         /* TODO: construct error reply? */
         crm_err("Pre-processing of command failed: %s", pcmk_strerror(rc));
-        return;
+        return rc;
+    }
+
+    op_function = based_get_op_function(operation);
+    if (op_function == NULL) {
+        crm_err("Operation %s not supported by CIB manager", op);
+        return -EOPNOTSUPP;
     }
 
     if (cib_client != NULL) {
-        parse_local_options(cib_client, call_type, call_options, host, op,
-                            &local_notify, &needs_reply, &process, &needs_forward);
+        parse_local_options(cib_client, operation, call_options, host, op,
+                            &local_notify, &needs_reply, &process,
+                            &needs_forward);
 
-    } else if (parse_peer_options(call_type, request, &local_notify,
-                                  &needs_reply, &process, &needs_forward) == FALSE) {
-        return;
+    } else if (!parse_peer_options(operation, request, &local_notify,
+                                   &needs_reply, &process)) {
+        return rc;
+    }
+
+    if (pcmk_is_set(call_options, cib_transaction)) {
+        /* All requests in a transaction are processed locally against a working
+         * CIB copy, and we don't notify for individual requests because the
+         * entire transaction is atomic.
+         *
+         * We still call the option parser functions above, for the sake of log
+         * messages and checking whether we're the target for peer requests.
+         */
+        process = TRUE;
+        needs_reply = FALSE;
+        local_notify = FALSE;
+        needs_forward = FALSE;
     }
 
-    is_update = cib_op_modifies(call_type);
+    is_update = pcmk_is_set(operation->flags, cib__op_attr_modifies);
 
-    if (call_options & cib_discard_reply) {
+    if (pcmk_is_set(call_options, cib_discard_reply)) {
         /* If the request will modify the CIB, and we are in legacy mode, we
          * need to build a reply so we can broadcast a diff, even if the
          * requester doesn't want one.
          */
         needs_reply = is_update && cib_legacy_mode();
         local_notify = FALSE;
+        crm_trace("Client is not interested in the reply");
     }
 
     if (needs_forward) {
-        const char *section = crm_element_value(request, F_CIB_SECTION);
-        int log_level = LOG_INFO;
-
-        if (pcmk__str_eq(op, PCMK__CIB_REQUEST_NOOP, pcmk__str_none)) {
-            log_level = LOG_DEBUG;
-        }
-
-        do_crm_log(log_level,
-                   "Forwarding %s operation for section %s to %s (origin=%s/%s/%s)",
-                   op,
-                   section ? section : "'all'",
-                   pcmk__s(host, (cib_legacy_mode() ? "primary" : "all")),
-                   originator ? originator : "local",
-                   client_name, call_id);
-
-        forward_request(request, call_options);
-        return;
+        forward_request(request);
+        return rc;
     }
 
     if (cib_status != pcmk_ok) {
-        const char *call = crm_element_value(request, F_CIB_CALLID);
-
         rc = cib_status;
         crm_err("Operation ignored, cluster configuration is invalid."
                 " Please repair and restart: %s", pcmk_strerror(cib_status));
 
-        op_reply = create_xml_node(NULL, "cib-reply");
-        crm_xml_add(op_reply, F_TYPE, T_CIB);
-        crm_xml_add(op_reply, F_CIB_OPERATION, op);
-        crm_xml_add(op_reply, F_CIB_CALLID, call);
-        crm_xml_add(op_reply, F_CIB_CLIENTID, client_id);
-        crm_xml_add_int(op_reply, F_CIB_CALLOPTS, call_options);
-        crm_xml_add_int(op_reply, F_CIB_RC, rc);
-
-        crm_trace("Attaching reply output");
-        add_message_xml(op_reply, F_CIB_CALLDATA, the_cib);
-
-        crm_log_xml_explicit(op_reply, "cib:reply");
+        op_reply = create_cib_reply(op, call_id, client_id, call_options, rc,
+                                    the_cib);
 
     } else if (process) {
         time_t finished = 0;
@@ -1043,7 +1126,8 @@ cib_process_request(xmlNode *request, gboolean privileged,
         int level = LOG_INFO;
         const char *section = crm_element_value(request, F_CIB_SECTION);
 
-        rc = cib_process_command(request, &op_reply, &result_diff, privileged);
+        rc = cib_process_command(request, operation, op_function, &op_reply,
+                                 &result_diff, privileged);
 
         if (!is_update) {
             level = LOG_TRACE;
@@ -1120,10 +1204,9 @@ cib_process_request(xmlNode *request, gboolean privileged,
             op_reply = NULL;    /* the reply is queued, so don't free here */
         }
 
-    } else if (call_options & cib_discard_reply) {
-        crm_trace("Caller isn't interested in reply");
+    } else if ((cib_client == NULL)
+               && !pcmk_is_set(call_options, cib_discard_reply)) {
 
-    } else if (cib_client == NULL) {
         if (is_update == FALSE || result_diff == NULL) {
             crm_trace("Request not broadcast: R/O call");
 
@@ -1158,24 +1241,51 @@ cib_process_request(xmlNode *request, gboolean privileged,
     free_xml(op_reply);
     free_xml(result_diff);
 
-    return;
+    return rc;
 }
 
-static char *
-calculate_section_digest(const char *xpath, xmlNode * xml_obj)
+/*!
+ * \internal
+ * \brief Get a CIB operation's input from the request XML
+ *
+ * \param[in]  request  CIB request XML
+ * \param[in]  type     CIB operation type
+ * \param[out] section  Where to store CIB section name
+ *
+ * \return Input XML for CIB operation
+ *
+ * \note If not \c NULL, the return value is a non-const pointer to part of
+ *       \p request. The caller should not free it directly.
+ */
+static xmlNode *
+prepare_input(const xmlNode *request, enum cib__op_type type,
+              const char **section)
 {
-    xmlNode *xml_section = NULL;
+    xmlNode *input = NULL;
+
+    *section = NULL;
+
+    switch (type) {
+        case cib__op_apply_patch:
+            if (pcmk__xe_attr_is_true(request, F_CIB_GLOBAL_UPDATE)) {
+                input = get_message_xml(request, F_CIB_UPDATE_DIFF);
+            } else {
+                input = get_message_xml(request, F_CIB_CALLDATA);
+            }
+            break;
 
-    if (xml_obj == NULL) {
-        return NULL;
+        default:
+            input = get_message_xml(request, F_CIB_CALLDATA);
+            *section = crm_element_value(request, F_CIB_SECTION);
+            break;
     }
 
-    xml_section = get_xpath_object(xpath, xml_obj, LOG_TRACE);
-    if (xml_section == NULL) {
-        return NULL;
+    // Grab the specified section
+    if ((*section != NULL) && pcmk__xe_is(input, XML_TAG_CIB)) {
+        input = pcmk_find_cib_element(input, *section);
     }
-    return calculate_xml_versioned_digest(xml_section, FALSE, TRUE, CRM_FEATURE_SET); 
 
+    return input;
 }
 
 // v1 and v2 patch formats
@@ -1201,14 +1311,14 @@ contains_config_change(xmlNode *diff)
 }
 
 static int
-cib_process_command(xmlNode * request, xmlNode ** reply, xmlNode ** cib_diff, gboolean privileged)
+cib_process_command(xmlNode *request, const cib__operation_t *operation,
+                    cib__op_fn_t op_function, xmlNode **reply,
+                    xmlNode **cib_diff, bool privileged)
 {
     xmlNode *input = NULL;
     xmlNode *output = NULL;
     xmlNode *result_cib = NULL;
-    xmlNode *current_cib = NULL;
 
-    int call_type = 0;
     int call_options = 0;
 
     const char *op = NULL;
@@ -1216,24 +1326,15 @@ cib_process_command(xmlNode * request, xmlNode ** reply, xmlNode ** cib_diff, gb
     const char *call_id = crm_element_value(request, F_CIB_CALLID);
     const char *client_id = crm_element_value(request, F_CIB_CLIENTID);
     const char *client_name = crm_element_value(request, F_CIB_CLIENTNAME);
-    const char *origin = crm_element_value(request, F_ORIG);
+    const char *originator = crm_element_value(request, F_ORIG);
 
     int rc = pcmk_ok;
-    int rc2 = pcmk_ok;
 
-    gboolean send_r_notify = FALSE;
-    gboolean config_changed = FALSE;
-    gboolean manage_counters = TRUE;
+    bool config_changed = false;
+    bool manage_counters = true;
 
     static mainloop_timer_t *digest_timer = NULL;
 
-    char *current_nodes_digest = NULL;
-    char *current_alerts_digest = NULL;
-    char *current_status_digest = NULL;
-    uint32_t change_section = cib_change_section_nodes
-                              |cib_change_section_alerts
-                              |cib_change_section_status;
-
     CRM_ASSERT(cib_status == pcmk_ok);
 
     if(digest_timer == NULL) {
@@ -1242,91 +1343,64 @@ cib_process_command(xmlNode * request, xmlNode ** reply, xmlNode ** cib_diff, gb
 
     *reply = NULL;
     *cib_diff = NULL;
-    current_cib = the_cib;
 
     /* Start processing the request... */
     op = crm_element_value(request, F_CIB_OPERATION);
     crm_element_value_int(request, F_CIB_CALLOPTS, &call_options);
-    rc = cib_get_operation_id(op, &call_type);
 
-    if (rc == pcmk_ok && privileged == FALSE) {
-        rc = cib_op_can_run(call_type, call_options, privileged);
+    if (!privileged && pcmk_is_set(operation->flags, cib__op_attr_privileged)) {
+        rc = -EACCES;
+        crm_trace("Failed due to lack of privileges: %s", pcmk_strerror(rc));
+        goto done;
     }
 
-    rc2 = cib_op_prepare(call_type, request, &input, &section);
-    if (rc == pcmk_ok) {
-        rc = rc2;
-    }
+    input = prepare_input(request, operation->type, &section);
 
-    if (rc != pcmk_ok) {
-        crm_trace("Call setup failed: %s", pcmk_strerror(rc));
-        goto done;
-
-    } else if (cib_op_modifies(call_type) == FALSE) {
-        rc = cib_perform_op(op, call_options, cib_op_func(call_type), TRUE,
-                            section, request, input, FALSE, &config_changed,
-                            current_cib, &result_cib, NULL, &output);
+    if (!pcmk_is_set(operation->flags, cib__op_attr_modifies)) {
+        rc = cib_perform_op(op, call_options, op_function, true, section,
+                            request, input, false, &config_changed, &the_cib,
+                            &result_cib, NULL, &output);
 
         CRM_CHECK(result_cib == NULL, free_xml(result_cib));
         goto done;
     }
 
-    /* Handle a valid write action */
+    /* @COMPAT: Handle a valid write action (legacy)
+     *
+     * @TODO: Re-evaluate whether this is all truly legacy. The cib_force_diff
+     * portion is. However, F_CIB_GLOBAL_UPDATE may be set by a sync operation
+     * even in non-legacy mode, and manage_counters tells xml_create_patchset()
+     * whether to update version/epoch info.
+     */
     if (pcmk__xe_attr_is_true(request, F_CIB_GLOBAL_UPDATE)) {
-        /* legacy code */
-        manage_counters = FALSE;
+        manage_counters = false;
         cib__set_call_options(call_options, "call", cib_force_diff);
         crm_trace("Global update detected");
 
-        CRM_CHECK(call_type == 3 || call_type == 4, crm_err("Call type: %d", call_type);
-                  crm_log_xml_err(request, "bad op"));
+        CRM_LOG_ASSERT(pcmk__str_any_of(op,
+                                        PCMK__CIB_REQUEST_APPLY_PATCH,
+                                        PCMK__CIB_REQUEST_REPLACE,
+                                        NULL));
     }
 
     ping_modified_since = TRUE;
     if (pcmk_is_set(call_options, cib_inhibit_bcast)) {
         crm_trace("Skipping update: inhibit broadcast");
-        manage_counters = FALSE;
-    }
-
-    if (!pcmk_is_set(call_options, cib_dryrun)
-        && pcmk__str_eq(section, XML_CIB_TAG_STATUS, pcmk__str_casei)) {
-        // Copying large CIBs accounts for a huge percentage of our CIB usage
-        cib__set_call_options(call_options, "call", cib_zero_copy);
-    } else {
-        cib__clear_call_options(call_options, "call", cib_zero_copy);
-    }
-
-#define XPATH_CONFIG    "//" XML_TAG_CIB "/" XML_CIB_TAG_CONFIGURATION
-#define XPATH_NODES     XPATH_CONFIG "/" XML_CIB_TAG_NODES
-#define XPATH_ALERTS    XPATH_CONFIG "/" XML_CIB_TAG_ALERTS
-#define XPATH_STATUS    "//" XML_TAG_CIB "/" XML_CIB_TAG_STATUS
-
-    // Calculate the hash value of the section before the change
-    if (pcmk__str_eq(PCMK__CIB_REQUEST_REPLACE, op, pcmk__str_none)) {
-        current_nodes_digest = calculate_section_digest(XPATH_NODES,
-                                                        current_cib);
-        current_alerts_digest = calculate_section_digest(XPATH_ALERTS,
-                                                         current_cib);
-        current_status_digest = calculate_section_digest(XPATH_STATUS,
-                                                         current_cib);
-        crm_trace("current-digest %s:%s:%s", current_nodes_digest,
-                  current_alerts_digest, current_status_digest);
+        manage_counters = false;
     }
 
     // result_cib must not be modified after cib_perform_op() returns
-    rc = cib_perform_op(op, call_options, cib_op_func(call_type), FALSE,
-                        section, request, input, manage_counters,
-                        &config_changed, current_cib, &result_cib, cib_diff,
-                        &output);
+    rc = cib_perform_op(op, call_options, op_function, false, section,
+                        request, input, manage_counters, &config_changed,
+                        &the_cib, &result_cib, cib_diff, &output);
 
+    // @COMPAT: Legacy code
     if (!manage_counters) {
         int format = 1;
 
-        /* Legacy code
-         * If the diff is NULL at this point, it's because nothing changed
-         */
+        // If the diff is NULL at this point, it's because nothing changed
         if (*cib_diff != NULL) {
-            crm_element_value_int(*cib_diff, "format", &format);
+            crm_element_value_int(*cib_diff, PCMK_XA_FORMAT, &format);
         }
 
         if (format == 1) {
@@ -1334,92 +1408,60 @@ cib_process_command(xmlNode * request, xmlNode ** reply, xmlNode ** cib_diff, gb
         }
     }
 
-    /* Always write to disk for successful replace and upgrade ops. This also
+    /* Always write to disk for successful ops with the flag set. This also
      * negates the need to detect ordering changes.
      */
     if ((rc == pcmk_ok)
-        && pcmk__str_any_of(op,
-                            PCMK__CIB_REQUEST_REPLACE,
-                            PCMK__CIB_REQUEST_UPGRADE,
-                            NULL)) {
-        config_changed = TRUE;
-    }
-
-    if (rc == pcmk_ok && !pcmk_is_set(call_options, cib_dryrun)) {
-        crm_trace("Activating %s->%s%s%s",
-                  crm_element_value(current_cib, XML_ATTR_NUMUPDATES),
-                  crm_element_value(result_cib, XML_ATTR_NUMUPDATES),
-                  (pcmk_is_set(call_options, cib_zero_copy)? " zero-copy" : ""),
-                  (config_changed? " changed" : ""));
-        if (!pcmk_is_set(call_options, cib_zero_copy)) {
-            rc = activateCibXml(result_cib, config_changed, op);
-            crm_trace("Activated %s (%d)",
-                      crm_element_value(current_cib, XML_ATTR_NUMUPDATES), rc);
-        }
+        && pcmk_is_set(operation->flags, cib__op_attr_writes_through)) {
 
-        if ((rc == pcmk_ok) && contains_config_change(*cib_diff)) {
-            cib_read_config(config_hash, result_cib);
-        }
+        config_changed = true;
+    }
 
-        if (pcmk__str_eq(PCMK__CIB_REQUEST_REPLACE, op, pcmk__str_none)) {
-            char *result_nodes_digest = NULL;
-            char *result_alerts_digest = NULL;
-            char *result_status_digest = NULL;
-
-            /* Calculate the hash value of the changed section. */
-            result_nodes_digest = calculate_section_digest(XPATH_NODES,
-                                                           result_cib);
-            result_alerts_digest = calculate_section_digest(XPATH_ALERTS,
-                                                            result_cib);
-            result_status_digest = calculate_section_digest(XPATH_STATUS,
-                                                            result_cib);
-            crm_trace("result-digest %s:%s:%s", result_nodes_digest,
-                      result_alerts_digest, result_status_digest);
-
-            if (pcmk__str_eq(current_nodes_digest, result_nodes_digest,
-                             pcmk__str_none)) {
-                change_section =
-                    pcmk__clear_flags_as(__func__, __LINE__, LOG_TRACE,
-                                         "CIB change section",
-                                         "change_section", change_section,
-                                         cib_change_section_nodes, "nodes");
-            }
+    if ((rc == pcmk_ok)
+        && !pcmk_any_flags_set(call_options, cib_dryrun|cib_transaction)) {
 
-            if (pcmk__str_eq(current_alerts_digest, result_alerts_digest,
-                             pcmk__str_none)) {
-                change_section =
-                    pcmk__clear_flags_as(__func__, __LINE__, LOG_TRACE,
-                                         "CIB change section",
-                                         "change_section", change_section,
-                                         cib_change_section_alerts, "alerts");
+        if (result_cib != the_cib) {
+            if (pcmk_is_set(operation->flags, cib__op_attr_writes_through)) {
+                config_changed = true;
             }
 
-            if (pcmk__str_eq(current_status_digest, result_status_digest,
-                             pcmk__str_none)) {
-                change_section =
-                    pcmk__clear_flags_as(__func__, __LINE__, LOG_TRACE,
-                                         "CIB change section",
-                                         "change_section", change_section,
-                                         cib_change_section_status, "status");
-            }
+            crm_trace("Activating %s->%s%s",
+                      crm_element_value(the_cib, XML_ATTR_NUMUPDATES),
+                      crm_element_value(result_cib, XML_ATTR_NUMUPDATES),
+                      (config_changed? " changed" : ""));
 
-            if (change_section != cib_change_section_none) {
-                send_r_notify = TRUE;
+            rc = activateCibXml(result_cib, config_changed, op);
+            if (rc != pcmk_ok) {
+                crm_err("Failed to activate new CIB: %s", pcmk_strerror(rc));
             }
-            
-            free(result_nodes_digest);
-            free(result_alerts_digest);
-            free(result_status_digest);
+        }
+
+        if ((rc == pcmk_ok) && contains_config_change(*cib_diff)) {
+            cib_read_config(config_hash, result_cib);
+        }
 
-        } else if (pcmk__str_eq(PCMK__CIB_REQUEST_ERASE, op, pcmk__str_none)) {
-            send_r_notify = TRUE;
+        /* @COMPAT Nodes older than feature set 3.19.0 don't support
+         * transactions. In a mixed-version cluster with nodes <3.19.0, we must
+         * sync the updated CIB, so that the older nodes receive the changes.
+         * Any node that has already applied the transaction will ignore the
+         * synced CIB.
+         *
+         * To ensure the updated CIB is synced from only one node, we sync it
+         * from the originator.
+         */
+        if ((operation->type == cib__op_commit_transact)
+            && pcmk__str_eq(originator, OUR_NODENAME, pcmk__str_casei)
+            && compare_version(crm_element_value(the_cib, XML_ATTR_CRM_VERSION),
+                               "3.19.0") < 0) {
+
+            sync_our_cib(request, TRUE);
         }
 
         mainloop_timer_stop(digest_timer);
         mainloop_timer_start(digest_timer);
 
     } else if (rc == -pcmk_err_schema_validation) {
-        CRM_ASSERT(!pcmk_is_set(call_options, cib_zero_copy));
+        CRM_ASSERT(result_cib != the_cib);
 
         if (output != NULL) {
             crm_log_xml_info(output, "cib:output");
@@ -1432,61 +1474,31 @@ cib_process_command(xmlNode * request, xmlNode ** reply, xmlNode ** cib_diff, gb
         crm_trace("Not activating %d %d %s", rc,
                   pcmk_is_set(call_options, cib_dryrun),
                   crm_element_value(result_cib, XML_ATTR_NUMUPDATES));
-        if (!pcmk_is_set(call_options, cib_zero_copy)) {
+
+        if (result_cib != the_cib) {
             free_xml(result_cib);
         }
     }
 
-    if ((call_options & (cib_inhibit_notify|cib_dryrun)) == 0) {
+    if (!pcmk_any_flags_set(call_options,
+                            cib_dryrun|cib_inhibit_notify|cib_transaction)) {
         crm_trace("Sending notifications %d",
                   pcmk_is_set(call_options, cib_dryrun));
-        cib_diff_notify(op, rc, call_id, client_id, client_name, origin, input,
-                        *cib_diff);
+        cib_diff_notify(op, rc, call_id, client_id, client_name, originator,
+                        input, *cib_diff);
     }
 
-    if (send_r_notify) {
-        cib_replace_notify(op, rc, call_id, client_id, client_name, origin,
-                           the_cib, *cib_diff, change_section);
-    }
-
-    pcmk__output_set_log_level(logger_out, LOG_TRACE);
-    logger_out->message(logger_out, "xml-patchset", *cib_diff);
+    pcmk__log_xml_patchset(LOG_TRACE, *cib_diff);
 
   done:
     if (!pcmk_is_set(call_options, cib_discard_reply) || cib_legacy_mode()) {
-        const char *caller = crm_element_value(request, F_CIB_CLIENTID);
-
-        *reply = create_xml_node(NULL, "cib-reply");
-        crm_xml_add(*reply, F_TYPE, T_CIB);
-        crm_xml_add(*reply, F_CIB_OPERATION, op);
-        crm_xml_add(*reply, F_CIB_CALLID, call_id);
-        crm_xml_add(*reply, F_CIB_CLIENTID, caller);
-        crm_xml_add_int(*reply, F_CIB_CALLOPTS, call_options);
-        crm_xml_add_int(*reply, F_CIB_RC, rc);
-
-        if (output != NULL) {
-            crm_trace("Attaching reply output");
-            add_message_xml(*reply, F_CIB_CALLDATA, output);
-        }
-
-        crm_log_xml_explicit(*reply, "cib:reply");
+        *reply = create_cib_reply(op, call_id, client_id, call_options, rc,
+                                  output);
     }
 
-    crm_trace("cleanup");
-
-    if (cib_op_modifies(call_type) == FALSE && output != current_cib) {
+    if (output != the_cib) {
         free_xml(output);
-        output = NULL;
-    }
-
-    if (call_type >= 0) {
-        cib_op_cleanup(call_type, call_options, &input, &output);
     }
-
-    free(current_nodes_digest);
-    free(current_alerts_digest);
-    free(current_status_digest);
-
     crm_trace("done");
     return rc;
 }
@@ -1554,12 +1566,12 @@ initiate_exit(void)
     xmlNode *leaving = NULL;
 
     active = crm_active_peers();
-    if (active < 2) {
+    if (active < 2) { // This is the last active node
         terminate_cib(__func__, 0);
         return;
     }
 
-    crm_info("Sending disconnect notification to %d peers...", active);
+    crm_info("Sending shutdown request to %d peers", active);
 
     leaving = create_xml_node(NULL, "exit-notification");
     crm_xml_add(leaving, F_TYPE, "cib");
@@ -1664,12 +1676,6 @@ terminate_cib(const char *caller, int fast)
 
     uninitializeCib();
 
-    if (logger_out != NULL) {
-        logger_out->finish(logger_out, CRM_EX_OK, true, NULL);
-        pcmk__output_free(logger_out);
-        logger_out = NULL;
-    }
-
     if (fast > 0) {
         /* Quit fast on error */
         pcmk__stop_based_ipc(ipcs_ro, ipcs_rw, ipcs_shm);
diff --git a/daemons/based/based_common.c b/daemons/based/based_common.c
deleted file mode 100644
index 7e68cf0..0000000
--- a/daemons/based/based_common.c
+++ /dev/null
@@ -1,352 +0,0 @@
-/*
- * Copyright 2008-2023 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 <stdlib.h>
-#include <errno.h>
-#include <fcntl.h>
-
-#include <crm/crm.h>
-#include <crm/cib.h>
-#include <crm/msg_xml.h>
-#include <crm/common/ipc.h>
-#include <crm/cluster.h>
-
-#include <crm/common/xml.h>
-
-#include <pacemaker-based.h>
-
-gboolean stand_alone = FALSE;
-
-extern int cib_perform_command(xmlNode * request, xmlNode ** reply, xmlNode ** cib_diff,
-                               gboolean privileged);
-
-static xmlNode *
-cib_prepare_common(xmlNode * root, const char *section)
-{
-    xmlNode *data = NULL;
-
-    /* extract the CIB from the fragment */
-    if (root == NULL) {
-        return NULL;
-
-    } else if (pcmk__strcase_any_of(crm_element_name(root), XML_TAG_FRAGMENT,
-                                    F_CRM_DATA, F_CIB_CALLDATA, NULL)) {
-        data = first_named_child(root, XML_TAG_CIB);
-
-    } else {
-        data = root;
-    }
-
-    /* grab the section specified for the command */
-    if (section != NULL && data != NULL && pcmk__str_eq(crm_element_name(data), XML_TAG_CIB, pcmk__str_none)) {
-        data = pcmk_find_cib_element(data, section);
-    }
-
-    /* crm_log_xml_trace(root, "cib:input"); */
-    return data;
-}
-
-static int
-cib_prepare_none(xmlNode * request, xmlNode ** data, const char **section)
-{
-    *data = NULL;
-    *section = crm_element_value(request, F_CIB_SECTION);
-    return pcmk_ok;
-}
-
-static int
-cib_prepare_data(xmlNode * request, xmlNode ** data, const char **section)
-{
-    xmlNode *input_fragment = get_message_xml(request, F_CIB_CALLDATA);
-
-    *section = crm_element_value(request, F_CIB_SECTION);
-    *data = cib_prepare_common(input_fragment, *section);
-    /* crm_log_xml_debug(*data, "data"); */
-    return pcmk_ok;
-}
-
-static int
-cib_prepare_sync(xmlNode * request, xmlNode ** data, const char **section)
-{
-    *data = NULL;
-    *section = crm_element_value(request, F_CIB_SECTION);
-    return pcmk_ok;
-}
-
-static int
-cib_prepare_diff(xmlNode * request, xmlNode ** data, const char **section)
-{
-    xmlNode *input_fragment = NULL;
-
-    *data = NULL;
-    *section = NULL;
-
-    if (pcmk__xe_attr_is_true(request, F_CIB_GLOBAL_UPDATE)) {
-        input_fragment = get_message_xml(request, F_CIB_UPDATE_DIFF);
-    } else {
-        input_fragment = get_message_xml(request, F_CIB_CALLDATA);
-    }
-
-    CRM_CHECK(input_fragment != NULL, crm_log_xml_warn(request, "no input"));
-    *data = cib_prepare_common(input_fragment, NULL);
-    return pcmk_ok;
-}
-
-static int
-cib_cleanup_query(int options, xmlNode ** data, xmlNode ** output)
-{
-    CRM_LOG_ASSERT(*data == NULL);
-    if ((options & cib_no_children)
-        || pcmk__str_eq(crm_element_name(*output), "xpath-query", pcmk__str_casei)) {
-        free_xml(*output);
-    }
-    return pcmk_ok;
-}
-
-static int
-cib_cleanup_data(int options, xmlNode ** data, xmlNode ** output)
-{
-    free_xml(*output);
-    *data = NULL;
-    return pcmk_ok;
-}
-
-static int
-cib_cleanup_output(int options, xmlNode ** data, xmlNode ** output)
-{
-    free_xml(*output);
-    return pcmk_ok;
-}
-
-static int
-cib_cleanup_none(int options, xmlNode ** data, xmlNode ** output)
-{
-    CRM_LOG_ASSERT(*data == NULL);
-    CRM_LOG_ASSERT(*output == NULL);
-    return pcmk_ok;
-}
-
-static cib_operation_t cib_server_ops[] = {
-    // Booleans are modifies_cib, needs_privileges
-    {
-        NULL, FALSE, FALSE,
-        cib_prepare_none, cib_cleanup_none, cib_process_default
-    },
-    {
-        PCMK__CIB_REQUEST_QUERY, FALSE, FALSE,
-        cib_prepare_none, cib_cleanup_query, cib_process_query
-    },
-    {
-        PCMK__CIB_REQUEST_MODIFY, TRUE, TRUE,
-        cib_prepare_data, cib_cleanup_data, cib_process_modify
-    },
-    {
-        PCMK__CIB_REQUEST_APPLY_PATCH, TRUE, TRUE,
-        cib_prepare_diff, cib_cleanup_data, cib_server_process_diff
-    },
-    {
-        PCMK__CIB_REQUEST_REPLACE, TRUE, TRUE,
-        cib_prepare_data, cib_cleanup_data, cib_process_replace_svr
-    },
-    {
-        PCMK__CIB_REQUEST_CREATE, TRUE, TRUE,
-        cib_prepare_data, cib_cleanup_data, cib_process_create
-    },
-    {
-        PCMK__CIB_REQUEST_DELETE, TRUE, TRUE,
-        cib_prepare_data, cib_cleanup_data, cib_process_delete
-    },
-    {
-        PCMK__CIB_REQUEST_SYNC_TO_ALL, FALSE, TRUE,
-        cib_prepare_sync, cib_cleanup_none, cib_process_sync
-    },
-    {
-        PCMK__CIB_REQUEST_BUMP, TRUE, TRUE,
-        cib_prepare_none, cib_cleanup_output, cib_process_bump
-    },
-    {
-        PCMK__CIB_REQUEST_ERASE, TRUE, TRUE,
-        cib_prepare_none, cib_cleanup_output, cib_process_erase
-    },
-    {
-        PCMK__CIB_REQUEST_NOOP, FALSE, FALSE,
-        cib_prepare_none, cib_cleanup_none, cib_process_default
-    },
-    {
-        PCMK__CIB_REQUEST_ABS_DELETE, TRUE, TRUE,
-        cib_prepare_data, cib_cleanup_data, cib_process_delete_absolute
-    },
-    {
-        PCMK__CIB_REQUEST_UPGRADE, TRUE, TRUE,
-        cib_prepare_none, cib_cleanup_output, cib_process_upgrade_server
-    },
-    {
-        PCMK__CIB_REQUEST_SECONDARY, FALSE, TRUE,
-        cib_prepare_none, cib_cleanup_none, cib_process_readwrite
-    },
-    {
-        PCMK__CIB_REQUEST_ALL_SECONDARY, FALSE, TRUE,
-        cib_prepare_none, cib_cleanup_none, cib_process_readwrite
-    },
-    {
-        PCMK__CIB_REQUEST_SYNC_TO_ONE, FALSE, TRUE,
-        cib_prepare_sync, cib_cleanup_none, cib_process_sync_one
-    },
-    {
-        PCMK__CIB_REQUEST_PRIMARY, TRUE, TRUE,
-        cib_prepare_data, cib_cleanup_data, cib_process_readwrite
-    },
-    {
-        PCMK__CIB_REQUEST_IS_PRIMARY, FALSE, TRUE,
-        cib_prepare_none, cib_cleanup_none, cib_process_readwrite
-    },
-    {
-        PCMK__CIB_REQUEST_SHUTDOWN, FALSE, TRUE,
-        cib_prepare_sync, cib_cleanup_none, cib_process_shutdown_req
-    },
-    {
-        CRM_OP_PING, FALSE, FALSE,
-        cib_prepare_none, cib_cleanup_output, cib_process_ping
-    },
-};
-
-int
-cib_get_operation_id(const char *op, int *operation)
-{
-    static GHashTable *operation_hash = NULL;
-
-    if (operation_hash == NULL) {
-        int lpc = 0;
-        int max_msg_types = PCMK__NELEM(cib_server_ops);
-
-        operation_hash = pcmk__strkey_table(NULL, free);
-        for (lpc = 1; lpc < max_msg_types; lpc++) {
-            int *value = malloc(sizeof(int));
-
-            if(value) {
-                *value = lpc;
-                g_hash_table_insert(operation_hash, (gpointer) cib_server_ops[lpc].operation, value);
-            }
-        }
-    }
-
-    if (op != NULL) {
-        int *value = g_hash_table_lookup(operation_hash, op);
-
-        if (value) {
-            *operation = *value;
-            return pcmk_ok;
-        }
-    }
-    crm_err("Operation %s is not valid", op);
-    *operation = -1;
-    return -EINVAL;
-}
-
-xmlNode *
-cib_msg_copy(xmlNode * msg, gboolean with_data)
-{
-    int lpc = 0;
-    const char *field = NULL;
-    const char *value = NULL;
-    xmlNode *value_struct = NULL;
-
-    static const char *field_list[] = {
-        F_XML_TAGNAME,
-        F_TYPE,
-        F_CIB_CLIENTID,
-        F_CIB_CALLOPTS,
-        F_CIB_CALLID,
-        F_CIB_OPERATION,
-        F_CIB_ISREPLY,
-        F_CIB_SECTION,
-        F_CIB_HOST,
-        F_CIB_RC,
-        F_CIB_DELEGATED,
-        F_CIB_OBJID,
-        F_CIB_OBJTYPE,
-        F_CIB_EXISTING,
-        F_CIB_SEENCOUNT,
-        F_CIB_TIMEOUT,
-        F_CIB_GLOBAL_UPDATE,
-        F_CIB_CLIENTNAME,
-        F_CIB_USER,
-        F_CIB_NOTIFY_TYPE,
-        F_CIB_NOTIFY_ACTIVATE
-    };
-
-    static const char *data_list[] = {
-        F_CIB_CALLDATA,
-        F_CIB_UPDATE,
-        F_CIB_UPDATE_RESULT
-    };
-
-    xmlNode *copy = create_xml_node(NULL, "copy");
-
-    CRM_ASSERT(copy != NULL);
-
-    for (lpc = 0; lpc < PCMK__NELEM(field_list); lpc++) {
-        field = field_list[lpc];
-        value = crm_element_value(msg, field);
-        if (value != NULL) {
-            crm_xml_add(copy, field, value);
-        }
-    }
-    for (lpc = 0; with_data && lpc < PCMK__NELEM(data_list); lpc++) {
-        field = data_list[lpc];
-        value_struct = get_message_xml(msg, field);
-        if (value_struct != NULL) {
-            add_message_xml(copy, field, value_struct);
-        }
-    }
-
-    return copy;
-}
-
-cib_op_t *
-cib_op_func(int call_type)
-{
-    return &(cib_server_ops[call_type].fn);
-}
-
-gboolean
-cib_op_modifies(int call_type)
-{
-    return cib_server_ops[call_type].modifies_cib;
-}
-
-int
-cib_op_can_run(int call_type, int call_options, bool privileged)
-{
-    if (!privileged && cib_server_ops[call_type].needs_privileges) {
-        return -EACCES;
-    }
-    return pcmk_ok;
-}
-
-int
-cib_op_prepare(int call_type, xmlNode * request, xmlNode ** input, const char **section)
-{
-    crm_trace("Prepare %d", call_type);
-    return cib_server_ops[call_type].prepare(request, input, section);
-}
-
-int
-cib_op_cleanup(int call_type, int options, xmlNode ** input, xmlNode ** output)
-{
-    crm_trace("Cleanup %d", call_type);
-    return cib_server_ops[call_type].cleanup(options, input, output);
-}
diff --git a/daemons/based/based_io.c b/daemons/based/based_io.c
index fc34f39..f252ac1 100644
--- a/daemons/based/based_io.c
+++ b/daemons/based/based_io.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2004-2022 the Pacemaker project contributors
+ * Copyright 2004-2023 the Pacemaker project contributors
  *
  * The version control history for this file may have further details.
  *
@@ -22,6 +22,9 @@
 #include <sys/wait.h>
 #include <sys/stat.h>
 
+#include <glib.h>
+#include <libxml/tree.h>
+
 #include <crm/crm.h>
 
 #include <crm/cib.h>
@@ -45,12 +48,15 @@ cib_rename(const char *old)
 
     umask(S_IWGRP | S_IWOTH | S_IROTH);
     new_fd = mkstemp(new);
-    crm_err("Archiving unusable file %s as %s", old, new);
+
     if ((new_fd < 0) || (rename(old, new) < 0)) {
-        crm_perror(LOG_ERR, "Couldn't rename %s as %s", old, new);
-        crm_err("Disabling disk writes and continuing");
+        crm_err("Couldn't archive unusable file %s (disabling disk writes and continuing)",
+                old);
         cib_writes_enabled = FALSE;
+    } else {
+        crm_err("Archived unusable file %s as %s", old, new);
     }
+
     if (new_fd > 0) {
         close(new_fd);
     }
@@ -107,7 +113,7 @@ static int cib_archive_filter(const struct dirent * a)
 
     if(stat(a_path, &s) != 0) {
         rc = errno;
-        crm_trace("%s - stat failed: %s (%d)", a->d_name, pcmk_strerror(rc), rc);
+        crm_trace("%s - stat failed: %s (%d)", a->d_name, pcmk_rc_str(rc), rc);
         rc = 0;
 
     } else if ((s.st_mode & S_IFREG) != S_IFREG) {
@@ -189,7 +195,7 @@ readCibXmlFile(const char *dir, const char *file, gboolean discard_status)
     const char *name = NULL;
     const char *value = NULL;
     const char *validation = NULL;
-    const char *use_valgrind = getenv("PCMK_valgrind_enabled");
+    const char *use_valgrind = pcmk__env_option(PCMK__ENV_VALGRIND_ENABLED);
 
     xmlNode *root = NULL;
     xmlNode *status = NULL;
@@ -214,7 +220,7 @@ readCibXmlFile(const char *dir, const char *file, gboolean discard_status)
         crm_warn("Primary configuration corrupt or unusable, trying backups in %s", cib_root);
         lpc = scandir(cib_root, &namelist, cib_archive_filter, cib_archive_sort);
         if (lpc < 0) {
-            crm_perror(LOG_NOTICE, "scandir(%s) failed", cib_root);
+            crm_err("scandir(%s) failed: %s", cib_root, pcmk_rc_str(errno));
         }
     }
 
@@ -418,7 +424,7 @@ write_cib_contents(gpointer p)
 
         pid = fork();
         if (pid < 0) {
-            crm_perror(LOG_ERR, "Disabling disk writes after fork failure");
+            crm_err("Disabling disk writes after fork failure: %s", pcmk_rc_str(errno));
             cib_writes_enabled = FALSE;
             return FALSE;
         }
diff --git a/daemons/based/based_messages.c b/daemons/based/based_messages.c
index d46456c..35d639a 100644
--- a/daemons/based/based_messages.c
+++ b/daemons/based/based_messages.c
@@ -19,6 +19,9 @@
 #include <sys/param.h>
 #include <sys/types.h>
 
+#include <glib.h>
+#include <libxml/tree.h>
+
 #include <crm/crm.h>
 #include <crm/cib/internal.h>
 #include <crm/msg_xml.h>
@@ -61,25 +64,15 @@ cib_process_shutdown_req(const char *op, int options, const char *section, xmlNo
     return pcmk_ok;
 }
 
+// @COMPAT: Remove when PCMK__CIB_REQUEST_NOOP is removed
 int
-cib_process_default(const char *op, int options, const char *section, xmlNode * req,
-                    xmlNode * input, xmlNode * existing_cib, xmlNode ** result_cib,
-                    xmlNode ** answer)
+cib_process_noop(const char *op, int options, const char *section, xmlNode *req,
+                 xmlNode *input, xmlNode *existing_cib, xmlNode **result_cib,
+                 xmlNode **answer)
 {
-    int result = pcmk_ok;
-
     crm_trace("Processing \"%s\" event", op);
     *answer = NULL;
-
-    if (op == NULL) {
-        result = -EINVAL;
-        crm_err("No operation specified");
-
-    } else if (strcmp(PCMK__CIB_REQUEST_NOOP, op) != 0) {
-        result = -EPROTONOSUPPORT;
-        crm_err("Action [%s] is not supported by the CIB manager", op);
-    }
-    return result;
+    return pcmk_ok;
 }
 
 int
@@ -158,10 +151,10 @@ cib_process_ping(const char *op, int options, const char *section, xmlNode * req
             // Append additional detail so the receiver can log the differences
             add_message_xml(*answer, F_CIB_CALLDATA, the_cib);
         },
-        {
+        if (the_cib != NULL) {
             // Always include at least the version details
-            const char *tag = TYPE(the_cib);
-            xmlNode *shallow = create_xml_node(NULL, tag);
+            xmlNode *shallow = create_xml_node(NULL,
+                                               (const char *) the_cib->name);
 
             copy_in_properties(shallow, the_cib);
             add_message_xml(*answer, F_CIB_CALLDATA, shallow);
@@ -250,7 +243,7 @@ cib_process_upgrade_server(const char *op, int options, const char *section, xml
 
         if (rc != pcmk_ok) {
             // Notify originating peer so it can notify its local clients
-            crm_node_t *origin = pcmk__search_cluster_node_cache(0, host);
+            crm_node_t *origin = pcmk__search_cluster_node_cache(0, host, NULL);
 
             crm_info("Rejecting upgrade request from %s: %s "
                      CRM_XS " rc=%d peer=%s", host, pcmk_strerror(rc), rc,
@@ -341,8 +334,7 @@ cib_server_process_diff(const char *op, int options, const char *section, xmlNod
         crm_warn("Requesting full CIB refresh because update failed: %s"
                  CRM_XS " rc=%d", pcmk_strerror(rc), rc);
 
-        pcmk__output_set_log_level(logger_out, LOG_INFO);
-        logger_out->message(logger_out, "xml-patchset", input);
+        pcmk__log_xml_patchset(LOG_INFO, input);
         free_xml(*result_cib);
         *result_cib = NULL;
         send_sync_request(NULL);
@@ -356,15 +348,16 @@ cib_process_replace_svr(const char *op, int options, const char *section, xmlNod
                         xmlNode * input, xmlNode * existing_cib, xmlNode ** result_cib,
                         xmlNode ** answer)
 {
-    const char *tag = crm_element_name(input);
     int rc =
         cib_process_replace(op, options, section, req, input, existing_cib, result_cib, answer);
-    if (rc == pcmk_ok && pcmk__str_eq(tag, XML_TAG_CIB, pcmk__str_casei)) {
+
+    if ((rc == pcmk_ok) && pcmk__xe_is(input, XML_TAG_CIB)) {
         sync_in_progress = 0;
     }
     return rc;
 }
 
+// @COMPAT: Remove when PCMK__CIB_REQUEST_ABS_DELETE is removed
 int
 cib_process_delete_absolute(const char *op, int options, const char *section, xmlNode * req,
                             xmlNode * input, xmlNode * existing_cib, xmlNode ** result_cib,
@@ -373,6 +366,49 @@ cib_process_delete_absolute(const char *op, int options, const char *section, xm
     return -EINVAL;
 }
 
+static xmlNode *
+cib_msg_copy(xmlNode *msg)
+{
+    static const char *field_list[] = {
+        F_XML_TAGNAME,
+        F_TYPE,
+        F_CIB_CLIENTID,
+        F_CIB_CALLOPTS,
+        F_CIB_CALLID,
+        F_CIB_OPERATION,
+        F_CIB_ISREPLY,
+        F_CIB_SECTION,
+        F_CIB_HOST,
+        F_CIB_RC,
+        F_CIB_DELEGATED,
+        F_CIB_OBJID,
+        F_CIB_OBJTYPE,
+        F_CIB_EXISTING,
+        F_CIB_SEENCOUNT,
+        F_CIB_TIMEOUT,
+        F_CIB_GLOBAL_UPDATE,
+        F_CIB_CLIENTNAME,
+        F_CIB_USER,
+        F_CIB_NOTIFY_TYPE,
+        F_CIB_NOTIFY_ACTIVATE
+    };
+
+    xmlNode *copy = create_xml_node(NULL, "copy");
+
+    CRM_ASSERT(copy != NULL);
+
+    for (int lpc = 0; lpc < PCMK__NELEM(field_list); lpc++) {
+        const char *field = field_list[lpc];
+        const char *value = crm_element_value(msg, field);
+
+        if (value != NULL) {
+            crm_xml_add(copy, field, value);
+        }
+    }
+
+    return copy;
+}
+
 int
 sync_our_cib(xmlNode * request, gboolean all)
 {
@@ -384,22 +420,12 @@ sync_our_cib(xmlNode * request, gboolean all)
     xmlNode *replace_request = NULL;
 
     CRM_CHECK(the_cib != NULL, return -EINVAL);
-
-    replace_request = cib_msg_copy(request, FALSE);
-    CRM_CHECK(replace_request != NULL, return -EINVAL);
+    CRM_CHECK(all || (host != NULL), return -EINVAL);
 
     crm_debug("Syncing CIB to %s", all ? "all peers" : host);
-    if (all == FALSE && host == NULL) {
-        crm_log_xml_err(request, "bad sync");
-    }
 
-    /* remove the "all == FALSE" condition
-     *
-     * sync_from was failing, the local client wasn't being notified
-     *    because it didn't know it was a reply
-     * setting this does not prevent the other nodes from applying it
-     *    if all == TRUE
-     */
+    replace_request = cib_msg_copy(request);
+
     if (host != NULL) {
         crm_xml_add(replace_request, F_CIB_ISREPLY, host);
     }
@@ -425,3 +451,30 @@ sync_our_cib(xmlNode * request, gboolean all)
     free(digest);
     return result;
 }
+
+int
+cib_process_commit_transaction(const char *op, int options, const char *section,
+                               xmlNode *req, xmlNode *input,
+                               xmlNode *existing_cib, xmlNode **result_cib,
+                               xmlNode **answer)
+{
+    /* On success, our caller will activate *result_cib locally, trigger a
+     * replace notification if appropriate, and sync *result_cib to all nodes.
+     * On failure, our caller will free *result_cib.
+     */
+    int rc = pcmk_rc_ok;
+    const char *client_id = crm_element_value(req, F_CIB_CLIENTID);
+    const char *origin = crm_element_value(req, F_ORIG);
+    pcmk__client_t *client = pcmk__find_client_by_id(client_id);
+
+    rc = based_commit_transaction(input, client, origin, result_cib);
+
+    if (rc != pcmk_rc_ok) {
+        char *source = based_transaction_source_str(client, origin);
+
+        crm_err("Could not commit transaction for %s: %s",
+                source, pcmk_rc_str(rc));
+        free(source);
+    }
+    return pcmk_rc2legacy(rc);
+}
diff --git a/daemons/based/based_notify.c b/daemons/based/based_notify.c
index 5881f6d..00a4c54 100644
--- a/daemons/based/based_notify.c
+++ b/daemons/based/based_notify.c
@@ -21,6 +21,9 @@
 
 #include <time.h>
 
+#include <glib.h>
+#include <libxml/tree.h>
+
 #include <crm/crm.h>
 #include <crm/cib/internal.h>
 #include <crm/msg_xml.h>
@@ -30,7 +33,7 @@
 #include <pacemaker-based.h>
 
 struct cib_notification_s {
-    xmlNode *msg;
+    const xmlNode *msg;
     struct iovec *iov;
     int32_t iov_size;
 };
@@ -58,10 +61,6 @@ cib_notify_send_one(gpointer key, gpointer value, gpointer user_data)
 
         do_send = TRUE;
 
-    } else if (pcmk_is_set(client->flags, cib_notify_replace)
-               && pcmk__str_eq(type, T_CIB_REPLACE_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;
@@ -104,7 +103,7 @@ cib_notify_send_one(gpointer key, gpointer value, gpointer user_data)
 }
 
 static void
-cib_notify_send(xmlNode * xml)
+cib_notify_send(const xmlNode *xml)
 {
     struct iovec *iov;
     struct cib_notification_s update;
@@ -198,15 +197,16 @@ cib_diff_notify(const char *op, int result, const char *call_id,
     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_CLIENTNAME, client_name);
     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 = crm_element_name(update);
+        type = (const char *) update->name;
         crm_trace("Setting type to update->name: %s", type);
     } else {
-        type = crm_element_name(diff);
+        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));
@@ -218,88 +218,7 @@ cib_diff_notify(const char *op, int result, const char *call_id,
     }
     add_message_xml(update_msg, F_CIB_UPDATE_RESULT, diff);
 
+    crm_log_xml_trace(update_msg, "diff-notify");
     cib_notify_send(update_msg);
     free_xml(update_msg);
 }
-
-void
-cib_replace_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,
-                   uint32_t change_section)
-{
-    xmlNode *replace_msg = NULL;
-
-    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_INFO;
-
-    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 (del_updates < 0) {
-        crm_log_xml_debug(diff, "Bad replace diff");
-    }
-
-    if ((add_admin_epoch != del_admin_epoch)
-        || (add_epoch != del_epoch)
-        || (add_updates != del_updates)) {
-
-        do_crm_log(log_level,
-                   "Replaced CIB generation %d.%d.%d with %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 replace of 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));
-    }
-
-    replace_msg = create_xml_node(NULL, "notify-replace");
-
-    crm_xml_add(replace_msg, F_TYPE, T_CIB_NOTIFY);
-    crm_xml_add(replace_msg, F_SUBTYPE, T_CIB_REPLACE_NOTIFY);
-    crm_xml_add(replace_msg, F_CIB_OPERATION, op);
-    crm_xml_add(replace_msg, F_CIB_CLIENTID, client_id);
-    crm_xml_add(replace_msg, F_CIB_CALLID, call_id);
-    crm_xml_add(replace_msg, F_ORIG, origin);
-    crm_xml_add_int(replace_msg, F_CIB_RC, result);
-    crm_xml_add_ll(replace_msg, F_CIB_CHANGE_SECTION,
-                   (long long) change_section);
-    attach_cib_generation(replace_msg, "cib-replace-generation", update);
-
-    /* We can include update and diff if a replace callback needs them. Until
-     * then, avoid the overhead.
-     */
-
-    crm_log_xml_trace(replace_msg, "CIB replaced");
-
-    cib_notify_send(replace_msg);
-    free_xml(replace_msg);
-}
diff --git a/daemons/based/based_operation.c b/daemons/based/based_operation.c
new file mode 100644
index 0000000..736d425
--- /dev/null
+++ b/daemons/based/based_operation.c
@@ -0,0 +1,59 @@
+/*
+ * Copyright 2008-2023 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 <glib.h>
+
+#include <crm/crm.h>
+#include <crm/cib.h>
+#include <pacemaker-based.h>
+
+static const cib__op_fn_t cib_op_functions[] = {
+    [cib__op_abs_delete]       = cib_process_delete_absolute,
+    [cib__op_apply_patch]      = cib_server_process_diff,
+    [cib__op_bump]             = cib_process_bump,
+    [cib__op_commit_transact]  = cib_process_commit_transaction,
+    [cib__op_create]           = cib_process_create,
+    [cib__op_delete]           = cib_process_delete,
+    [cib__op_erase]            = cib_process_erase,
+    [cib__op_is_primary]       = cib_process_readwrite,
+    [cib__op_modify]           = cib_process_modify,
+    [cib__op_noop]             = cib_process_noop,
+    [cib__op_ping]             = cib_process_ping,
+    [cib__op_primary]          = cib_process_readwrite,
+    [cib__op_query]            = cib_process_query,
+    [cib__op_replace]          = cib_process_replace_svr,
+    [cib__op_secondary]        = cib_process_readwrite,
+    [cib__op_shutdown]         = cib_process_shutdown_req,
+    [cib__op_sync_all]         = cib_process_sync,
+    [cib__op_sync_one]         = cib_process_sync_one,
+    [cib__op_upgrade]          = cib_process_upgrade_server,
+};
+
+/*!
+ * \internal
+ * \brief Get the function that performs a given server-side CIB operation
+ *
+ * \param[in] operation  Operation whose function to look up
+ *
+ * \return Function that performs \p operation within \c pacemaker-based
+ */
+cib__op_fn_t
+based_get_op_function(const cib__operation_t *operation)
+{
+    enum cib__op_type type = operation->type;
+
+    CRM_ASSERT(type >= 0);
+
+    if (type >= PCMK__NELEM(cib_op_functions)) {
+        return NULL;
+    }
+    return cib_op_functions[type];
+}
diff --git a/daemons/based/based_remote.c b/daemons/based/based_remote.c
index 38136d2..4aa41fa 100644
--- a/daemons/based/based_remote.c
+++ b/daemons/based/based_remote.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2004-2021 the Pacemaker project contributors
+ * Copyright 2004-2023 the Pacemaker project contributors
  *
  * The version control history for this file may have further details.
  *
@@ -23,7 +23,9 @@
 
 #include <stdlib.h>
 #include <errno.h>
+
 #include <glib.h>
+#include <libxml/tree.h>
 
 #include <crm/msg_xml.h>
 #include <crm/common/ipc.h>
@@ -126,13 +128,13 @@ init_remote_listener(int port, gboolean encrypted)
     /* create server socket */
     ssock = malloc(sizeof(int));
     if(ssock == NULL) {
-        crm_perror(LOG_ERR, "Listener socket allocation failed");
+        crm_err("Listener socket allocation failed: %s", pcmk_rc_str(errno));
         return -1;
     }
 
     *ssock = socket(AF_INET, SOCK_STREAM, 0);
     if (*ssock == -1) {
-        crm_perror(LOG_ERR, "Listener socket creation failed");
+        crm_err("Listener socket creation failed: %s", pcmk_rc_str(errno));
         free(ssock);
         return -1;
     }
@@ -141,8 +143,8 @@ init_remote_listener(int port, gboolean encrypted)
     optval = 1;
     rc = setsockopt(*ssock, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof(optval));
     if (rc < 0) {
-        crm_perror(LOG_WARNING,
-                   "Local address reuse not allowed on listener socket");
+        crm_err("Local address reuse not allowed on listener socket: %s",
+                pcmk_rc_str(errno));
     }
 
     /* bind server socket */
@@ -151,13 +153,13 @@ init_remote_listener(int port, gboolean encrypted)
     saddr.sin_addr.s_addr = INADDR_ANY;
     saddr.sin_port = htons(port);
     if (bind(*ssock, (struct sockaddr *)&saddr, sizeof(saddr)) == -1) {
-        crm_perror(LOG_ERR, "Cannot bind to listener socket");
+        crm_err("Cannot bind to listener socket: %s", pcmk_rc_str(errno));
         close(*ssock);
         free(ssock);
         return -2;
     }
     if (listen(*ssock, 10) == -1) {
-        crm_perror(LOG_ERR, "Cannot listen on socket");
+        crm_err("Cannot listen on socket: %s", pcmk_rc_str(errno));
         close(*ssock);
         free(ssock);
         return -3;
@@ -222,9 +224,9 @@ cib_remote_auth(xmlNode * login)
         return FALSE;
     }
 
-    tmp = crm_element_name(login);
-    if (!pcmk__str_eq(tmp, "cib_command", pcmk__str_casei)) {
-        crm_err("Wrong tag: %s", tmp);
+    if (!pcmk__xe_is(login, T_CIB_COMMAND)) {
+        crm_err("Unrecognizable message from remote client");
+        crm_log_xml_info(login, "bad");
         return FALSE;
     }
 
@@ -296,7 +298,7 @@ cib_remote_listen(gpointer data)
     memset(&addr, 0, sizeof(addr));
     csock = accept(ssock, (struct sockaddr *)&addr, &laddr);
     if (csock == -1) {
-        crm_perror(LOG_ERR, "Could not accept socket connection");
+        crm_err("Could not accept socket connection: %s", pcmk_rc_str(errno));
         return TRUE;
     }
 
@@ -411,9 +413,8 @@ cib_handle_remote_msg(pcmk__client_t *client, xmlNode *command)
 {
     const char *value = NULL;
 
-    value = crm_element_name(command);
-    if (!pcmk__str_eq(value, "cib_command", pcmk__str_casei)) {
-        crm_log_xml_trace(command, "Bad command: ");
+    if (!pcmk__xe_is(command, T_CIB_COMMAND)) {
+        crm_log_xml_trace(command, "bad");
         return;
     }
 
diff --git a/daemons/based/based_transaction.c b/daemons/based/based_transaction.c
new file mode 100644
index 0000000..89aea2e
--- /dev/null
+++ b/daemons/based/based_transaction.c
@@ -0,0 +1,167 @@
+/*
+ * Copyright 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 <glib.h>
+#include <libxml/tree.h>
+
+#include "pacemaker-based.h"
+
+/*!
+ * \internal
+ * \brief Create a string describing the source of a commit-transaction request
+ *
+ * \param[in] client  CIB client
+ * \param[in] origin  Host where the commit request originated
+ *
+ * \return String describing the request source
+ *
+ * \note The caller is responsible for freeing the return value using \c free().
+ */
+char *
+based_transaction_source_str(const pcmk__client_t *client, const char *origin)
+{
+    char *source = NULL;
+
+    if (client != NULL) {
+        source = crm_strdup_printf("client %s (%s)%s%s",
+                                   pcmk__client_name(client),
+                                   pcmk__s(client->id, "unidentified"),
+                                   ((origin != NULL)? " on " : ""),
+                                   pcmk__s(origin, ""));
+
+    } else {
+        source = strdup((origin != NULL)? origin : "unknown source");
+    }
+
+    CRM_ASSERT(source != NULL);
+    return source;
+}
+
+/*!
+ * \internal
+ * \brief Process requests in a transaction
+ *
+ * Stop when a request fails or when all requests have been processed.
+ *
+ * \param[in,out] transaction  Transaction to process
+ * \param[in]     client       CIB client
+ * \param[in]     source       String describing the commit request source
+ *
+ * \return Standard Pacemaker return code
+ */
+static int
+process_transaction_requests(xmlNodePtr transaction,
+                             const pcmk__client_t *client, const char *source)
+{
+    for (xmlNodePtr request = first_named_child(transaction, T_CIB_COMMAND);
+         request != NULL; request = crm_next_same_xml(request)) {
+
+        const char *op = crm_element_value(request, F_CIB_OPERATION);
+        const char *host = crm_element_value(request, F_CIB_HOST);
+        const cib__operation_t *operation = NULL;
+        int rc = cib__get_operation(op, &operation);
+
+        if (rc == pcmk_rc_ok) {
+            if (!pcmk_is_set(operation->flags, cib__op_attr_transaction)
+                || (host != NULL)) {
+
+                rc = EOPNOTSUPP;
+            } else {
+                /* Commit-transaction is a privileged operation. If we reached
+                 * this point, the request came from a privileged connection.
+                 */
+                rc = cib_process_request(request, TRUE, client);
+                rc = pcmk_legacy2rc(rc);
+            }
+        }
+
+        if (rc != pcmk_rc_ok) {
+            crm_err("Aborting CIB transaction for %s due to failed %s request: "
+                    "%s",
+                    source, op, pcmk_rc_str(rc));
+            crm_log_xml_info(request, "Failed request");
+            return rc;
+        }
+
+        crm_trace("Applied %s request to transaction working CIB for %s",
+                  op, source);
+        crm_log_xml_trace(request, "Successful request");
+    }
+
+    return pcmk_rc_ok;
+}
+
+/*!
+ * \internal
+ * \brief Commit a given CIB client's transaction to a working CIB copy
+ *
+ * \param[in]     transaction  Transaction to commit
+ * \param[in]     client       CIB client
+ * \param[in]     origin       Host where the commit request originated
+ * \param[in,out] result_cib   Where to store result CIB
+ *
+ * \return Standard Pacemaker return code
+ *
+ * \note This function is expected to be called only by
+ *       \p cib_process_commit_transaction().
+ * \note \p result_cib is expected to be a copy of the current CIB as created by
+ *       \p cib_perform_op().
+ * \note The caller is responsible for activating and syncing \p result_cib on
+ *       success, and for freeing it on failure.
+ */
+int
+based_commit_transaction(xmlNodePtr transaction, const pcmk__client_t *client,
+                         const char *origin, xmlNodePtr *result_cib)
+{
+    xmlNodePtr saved_cib = the_cib;
+    int rc = pcmk_rc_ok;
+    char *source = NULL;
+
+    CRM_ASSERT(result_cib != NULL);
+
+    CRM_CHECK(pcmk__xe_is(transaction, T_CIB_TRANSACTION),
+              return pcmk_rc_no_transaction);
+
+    /* *result_cib should be a copy of the_cib (created by cib_perform_op()). If
+     * not, make a copy now. Change tracking isn't strictly required here
+     * because:
+     * * Each request in the transaction will have changes tracked and ACLs
+     *   checked if appropriate.
+     * * cib_perform_op() will infer changes for the commit request at the end.
+     */
+    CRM_CHECK((*result_cib != NULL) && (*result_cib != the_cib),
+              *result_cib = copy_xml(the_cib));
+
+    source = based_transaction_source_str(client, origin);
+    crm_trace("Committing transaction for %s to working CIB", source);
+
+    // Apply all changes to a working copy of the CIB
+    the_cib = *result_cib;
+
+    rc = process_transaction_requests(transaction, client, origin);
+
+    crm_trace("Transaction commit %s for %s",
+              ((rc == pcmk_rc_ok)? "succeeded" : "failed"), source);
+
+    /* Some request types (for example, erase) may have freed the_cib (the
+     * working copy) and pointed it at a new XML object. In that case, it
+     * follows that *result_cib (the working copy) was freed.
+     *
+     * Point *result_cib at the updated working copy stored in the_cib.
+     */
+    *result_cib = the_cib;
+
+    // Point the_cib back to the unchanged original copy
+    the_cib = saved_cib;
+
+    free(source);
+    return rc;
+}
diff --git a/daemons/based/based_transaction.h b/daemons/based/based_transaction.h
new file mode 100644
index 0000000..9935c73
--- /dev/null
+++ b/daemons/based/based_transaction.h
@@ -0,0 +1,24 @@
+/*
+ * Copyright 2023 the Pacemaker project contributors
+ *
+ * The version control history for this file may have further details.
+ *
+ * This source code is licensed under the GNU Lesser General Public License
+ * version 2.1 or later (LGPLv2.1+) WITHOUT ANY WARRANTY.
+ */
+
+#ifndef BASED_TRANSACTION__H
+#define BASED_TRANSACTION__H
+
+#include <crm_internal.h>
+
+#include <libxml/tree.h>
+
+char *based_transaction_source_str(const pcmk__client_t *client,
+                                   const char *origin);
+
+int based_commit_transaction(xmlNodePtr transaction,
+                             const pcmk__client_t *client,
+                             const char *origin, xmlNodePtr *result_cib);
+
+#endif // BASED_TRANSACTION__H
diff --git a/daemons/based/pacemaker-based.c b/daemons/based/pacemaker-based.c
index 129997e..5dd7938 100644
--- a/daemons/based/pacemaker-based.c
+++ b/daemons/based/pacemaker-based.c
@@ -16,7 +16,8 @@
 #include <bzlib.h>
 #include <sys/types.h>
 
-#include <libxml/parser.h>
+#include <glib.h>
+#include <libxml/tree.h>
 
 #include <crm/crm.h>
 #include <crm/cib/internal.h>
@@ -42,6 +43,7 @@ gchar *cib_root = NULL;
 static gboolean preserve_status = FALSE;
 
 gboolean cib_writes_enabled = TRUE;
+gboolean stand_alone = FALSE;
 
 int remote_fd = 0;
 int remote_tls_fd = 0;
@@ -49,8 +51,6 @@ int remote_tls_fd = 0;
 GHashTable *config_hash = NULL;
 GHashTable *local_notify_queue = NULL;
 
-pcmk__output_t *logger_out = NULL;
-
 static void cib_init(void);
 void cib_shutdown(int nsig);
 static bool startCib(const char *filename);
@@ -197,15 +197,6 @@ main(int argc, char **argv)
         goto done;
     }
 
-    rc = pcmk__log_output_new(&logger_out);
-    if (rc != pcmk_rc_ok) {
-        exit_code = CRM_EX_ERROR;
-        g_set_error(&error, PCMK__EXITC_ERROR, exit_code,
-                    "Error creating output format log: %s", pcmk_rc_str(rc));
-        goto done;
-    }
-    pcmk__output_set_log_level(logger_out, LOG_TRACE);
-
     mainloop_add_signal(SIGTERM, cib_shutdown);
     mainloop_add_signal(SIGPIPE, cib_enable_writes);
 
@@ -230,7 +221,7 @@ main(int argc, char **argv)
         goto done;
     }
 
-    if (crm_ipc_connect(old_instance)) {
+    if (pcmk__connect_generic_ipc(old_instance) == pcmk_rc_ok) {
         /* IPC end-point already up */
         crm_ipc_close(old_instance);
         crm_ipc_destroy(old_instance);
diff --git a/daemons/based/pacemaker-based.h b/daemons/based/pacemaker-based.h
index 05e49b3..33c7642 100644
--- a/daemons/based/pacemaker-based.h
+++ b/daemons/based/pacemaker-based.h
@@ -18,6 +18,9 @@
 #include <errno.h>
 #include <fcntl.h>
 
+#include <glib.h>
+#include <libxml/tree.h>
+
 #include <crm/crm.h>
 #include <crm/cib.h>
 #include <crm/common/xml.h>
@@ -26,16 +29,19 @@
 #include <crm/common/mainloop.h>
 #include <crm/cib/internal.h>
 
+#include "based_transaction.h"
+
 #ifdef HAVE_GNUTLS_GNUTLS_H
 #  include <gnutls/gnutls.h>
 #endif
 
+#define OUR_NODENAME (stand_alone? "localhost" : crm_cluster->uname)
+
 // CIB-specific client flags
 enum cib_client_flags {
     // Notifications
     cib_notify_pre     = (UINT64_C(1) << 0),
     cib_notify_post    = (UINT64_C(1) << 1),
-    cib_notify_replace = (UINT64_C(1) << 2),
     cib_notify_confirm = (UINT64_C(1) << 3),
     cib_notify_diff    = (UINT64_C(1) << 4),
 
@@ -43,16 +49,6 @@ enum cib_client_flags {
     cib_is_daemon      = (UINT64_C(1) << 12),
 };
 
-typedef struct cib_operation_s {
-    const char *operation;
-    gboolean modifies_cib;
-    gboolean needs_privileges;
-    int (*prepare) (xmlNode *, xmlNode **, const char **);
-    int (*cleanup) (int, xmlNode **, xmlNode **);
-    int (*fn) (const char *, int, const char *, xmlNode *,
-               xmlNode *, xmlNode *, xmlNode **, xmlNode **);
-} cib_operation_t;
-
 extern bool based_is_primary;
 extern GHashTable *config_hash;
 extern xmlNode *the_cib;
@@ -67,7 +63,6 @@ extern gboolean stand_alone;
 extern gboolean cib_shutdown_flag;
 extern gchar *cib_root;
 extern int cib_status;
-extern pcmk__output_t *logger_out;
 
 extern struct qb_ipcs_service_handlers ipc_ro_callbacks;
 extern struct qb_ipcs_service_handlers ipc_rw_callbacks;
@@ -79,6 +74,8 @@ void cib_peer_callback(xmlNode *msg, void *private_data);
 void cib_common_callback_worker(uint32_t id, uint32_t flags,
                                 xmlNode *op_request, pcmk__client_t *cib_client,
                                 gboolean privileged);
+int cib_process_request(xmlNode *request, gboolean privileged,
+                        const pcmk__client_t *cib_client);
 void cib_shutdown(int nsig);
 void terminate_cib(const char *caller, int fast);
 gboolean cib_legacy_mode(void);
@@ -92,9 +89,9 @@ int cib_process_shutdown_req(const char *op, int options, const char *section,
                              xmlNode *req, xmlNode *input,
                              xmlNode *existing_cib, xmlNode **result_cib,
                              xmlNode **answer);
-int cib_process_default(const char *op, int options, const char *section,
-                        xmlNode *req, xmlNode *input, xmlNode *existing_cib,
-                        xmlNode **result_cib, xmlNode **answer);
+int cib_process_noop(const char *op, int options, const char *section,
+                     xmlNode *req, xmlNode *input, xmlNode *existing_cib,
+                     xmlNode **result_cib, xmlNode **answer);
 int cib_process_ping(const char *op, int options, const char *section,
                      xmlNode *req, xmlNode *input, xmlNode *existing_cib,
                      xmlNode **result_cib, xmlNode **answer);
@@ -121,25 +118,17 @@ int cib_process_upgrade_server(const char *op, int options, const char *section,
                                xmlNode *req, xmlNode *input,
                                xmlNode *existing_cib, xmlNode **result_cib,
                                xmlNode **answer);
+int cib_process_commit_transaction(const char *op, int options,
+                                   const char *section, xmlNode *req,
+                                   xmlNode *input, xmlNode *existing_cib,
+                                   xmlNode **result_cib, xmlNode **answer);
 void send_sync_request(const char *host);
 int sync_our_cib(xmlNode *request, gboolean all);
 
-xmlNode *cib_msg_copy(xmlNode *msg, gboolean with_data);
-int cib_get_operation_id(const char *op, int *operation);
-cib_op_t *cib_op_func(int call_type);
-gboolean cib_op_modifies(int call_type);
-int cib_op_prepare(int call_type, xmlNode *request, xmlNode **input,
-                   const char **section);
-int cib_op_cleanup(int call_type, int options, xmlNode **input,
-                   xmlNode **output);
-int cib_op_can_run(int call_type, int call_options, bool privileged);
+cib__op_fn_t based_get_op_function(const cib__operation_t *operation);
 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);
-void cib_replace_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,
-                        uint32_t change_section);
 
 static inline const char *
 cib_config_lookup(const char *opt)