]> git.sur5r.net Git - openldap/blobdiff - servers/slapd/back-monitor/init.c
tolerate that config_get_vals() returns success with no values (ITS#4341)
[openldap] / servers / slapd / back-monitor / init.c
index 65136ddcd2b4886a6d0f7e00ef8625e23168a69b..5e3c1db925b29b0a82517cea43250058972e0715 100644 (file)
@@ -2,7 +2,7 @@
 /* $OpenLDAP$ */
 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
  *
- * Copyright 2001-2005 The OpenLDAP Foundation.
+ * Copyright 2001-2006 The OpenLDAP Foundation.
  * Portions Copyright 2001-2003 Pierangelo Masarati.
  * All rights reserved.
  *
@@ -26,6 +26,7 @@
 
 #include <lutil.h>
 #include "slap.h"
+#include "config.h"
 #include "lber_pvt.h"
 #include "back-monitor.h"
 
  * so it should not be used outside monitor_back_db_init()
  * until monitor_back_db_open is called.
  */
-BackendDB *be_monitor = NULL;
+BackendDB                      *be_monitor;
 
-static struct monitor_subsys_t **monitor_subsys = NULL;
-static int                     monitor_subsys_opened = 0;
+static struct monitor_subsys_t **monitor_subsys;
+static int                     monitor_subsys_opened;
+static monitor_info_t          monitor_info;
 
 /*
  * subsystem data
@@ -56,112 +58,153 @@ static struct monitor_subsys_t known_monitor_subsys[] = {
        { 
                SLAPD_MONITOR_BACKEND_NAME, 
                BER_BVNULL, BER_BVNULL, BER_BVNULL,
+               { BER_BVC( "This subsystem contains information about available backends." ),
+                       BER_BVNULL },
                MONITOR_F_PERSISTENT_CH,
                monitor_subsys_backend_init,
+               NULL,   /* destroy */
                NULL,   /* update */
                NULL,   /* create */
                NULL    /* modify */
                }, { 
                SLAPD_MONITOR_CONN_NAME,
                BER_BVNULL, BER_BVNULL, BER_BVNULL,
+               { BER_BVC( "This subsystem contains information about connections." ),
+                       BER_BVNULL },
                MONITOR_F_VOLATILE_CH,
                monitor_subsys_conn_init,
-               monitor_subsys_conn_update,
-               monitor_subsys_conn_create,
+               NULL,   /* destroy */
+               NULL,   /* update */
+               NULL,   /* create */
                NULL    /* modify */
                }, { 
                SLAPD_MONITOR_DATABASE_NAME,    
                BER_BVNULL, BER_BVNULL, BER_BVNULL,
+               { BER_BVC( "This subsystem contains information about configured databases." ),
+                       BER_BVNULL },
                MONITOR_F_PERSISTENT_CH,
                monitor_subsys_database_init,
+               NULL,   /* destroy */
                NULL,   /* update */
                NULL,   /* create */
-               monitor_subsys_database_modify
+               NULL    /* modify */
                }, { 
                SLAPD_MONITOR_LISTENER_NAME,    
                BER_BVNULL, BER_BVNULL, BER_BVNULL,
+               { BER_BVC( "This subsystem contains information about active listeners." ),
+                       BER_BVNULL },
                MONITOR_F_PERSISTENT_CH,
                monitor_subsys_listener_init,
+               NULL,   /* destroy */
                NULL,   /* update */
                NULL,   /* create */
                NULL    /* modify */
                }, { 
                SLAPD_MONITOR_LOG_NAME,
                BER_BVNULL, BER_BVNULL, BER_BVNULL,
+               { BER_BVC( "This subsystem contains information about logging." ),
+                       BER_BVC( "Set the attribute \"managedInfo\" to the desired log levels." ),
+                       BER_BVNULL },
                MONITOR_F_NONE,
                monitor_subsys_log_init,
+               NULL,   /* destroy */
                NULL,   /* update */
                NULL,   /* create */
-               monitor_subsys_log_modify
+               NULL,   /* modify */
                }, { 
                SLAPD_MONITOR_OPS_NAME,
                BER_BVNULL, BER_BVNULL, BER_BVNULL,
+               { BER_BVC( "This subsystem contains information about performed operations." ),
+                       BER_BVNULL },
                MONITOR_F_PERSISTENT_CH,
                monitor_subsys_ops_init,
-               monitor_subsys_ops_update,
+               NULL,   /* destroy */
+               NULL,   /* update */
                NULL,   /* create */
                NULL,   /* modify */
                }, { 
                SLAPD_MONITOR_OVERLAY_NAME,
                BER_BVNULL, BER_BVNULL, BER_BVNULL,
+               { BER_BVC( "This subsystem contains information about available overlays." ),
+                       BER_BVNULL },
                MONITOR_F_PERSISTENT_CH,
                monitor_subsys_overlay_init,
+               NULL,   /* destroy */
                NULL,   /* update */
                NULL,   /* create */
                NULL,   /* modify */
        }, { 
                SLAPD_MONITOR_SASL_NAME,        
                BER_BVNULL, BER_BVNULL, BER_BVNULL,
+               { BER_BVC( "This subsystem contains information about SASL." ),
+                       BER_BVNULL },
                MONITOR_F_NONE,
                NULL,   /* init */
+               NULL,   /* destroy */
                NULL,   /* update */
                NULL,   /* create */
                NULL    /* modify */
                }, { 
                SLAPD_MONITOR_SENT_NAME,
                BER_BVNULL, BER_BVNULL, BER_BVNULL,
+               { BER_BVC( "This subsystem contains statistics." ),
+                       BER_BVNULL },
                MONITOR_F_PERSISTENT_CH,
                monitor_subsys_sent_init,
-               monitor_subsys_sent_update,
+               NULL,   /* destroy */
+               NULL,   /* update */
                NULL,   /* create */
                NULL,   /* modify */
                }, { 
                SLAPD_MONITOR_THREAD_NAME,      
                BER_BVNULL, BER_BVNULL, BER_BVNULL,
+               { BER_BVC( "This subsystem contains information about threads." ),
+                       BER_BVNULL },
                MONITOR_F_PERSISTENT_CH,
                monitor_subsys_thread_init,
-               monitor_subsys_thread_update,
+               NULL,   /* destroy */
+               NULL,   /* update */
                NULL,   /* create */
                NULL    /* modify */
                }, { 
                SLAPD_MONITOR_TIME_NAME,
                BER_BVNULL, BER_BVNULL, BER_BVNULL,
+               { BER_BVC( "This subsystem contains information about time." ),
+                       BER_BVNULL },
                MONITOR_F_PERSISTENT_CH,
                monitor_subsys_time_init,
-               monitor_subsys_time_update,
+               NULL,   /* destroy */
+               NULL,   /* update */
                NULL,   /* create */
                NULL,   /* modify */
                }, { 
                SLAPD_MONITOR_TLS_NAME,
                BER_BVNULL, BER_BVNULL, BER_BVNULL,
+               { BER_BVC( "This subsystem contains information about TLS." ),
+                       BER_BVNULL },
                MONITOR_F_NONE,
                NULL,   /* init */
+               NULL,   /* destroy */
                NULL,   /* update */
                NULL,   /* create */
                NULL    /* modify */
                }, { 
                SLAPD_MONITOR_RWW_NAME,
                BER_BVNULL, BER_BVNULL, BER_BVNULL,
+               { BER_BVC( "This subsystem contains information about read/write waiters." ),
+                       BER_BVNULL },
                MONITOR_F_PERSISTENT_CH,
                monitor_subsys_rww_init,
-               monitor_subsys_rww_update,
+               NULL,   /* destroy */
+               NULL,   /* update */
                NULL,   /* create */
                NULL    /* modify */
                }, { NULL }
 };
 
 int
-monitor_back_register_subsys( monitor_subsys_t *ms )
+monitor_back_register_subsys(
+       monitor_subsys_t        *ms )
 {
        int     i = 0;
 
@@ -187,7 +230,7 @@ monitor_back_register_subsys( monitor_subsys_t *ms )
 
                /* FIXME: this should only be possible
                 * if be_monitor is already initialized */
-               assert( be_monitor );
+               assert( be_monitor != NULL );
 
                if ( ms->mss_open && ( *ms->mss_open )( be_monitor, ms ) ) {
                        return -1;
@@ -218,12 +261,28 @@ typedef struct entry_limbo_t {
        struct entry_limbo_t    *el_next;
 } entry_limbo_t;
 
+int
+monitor_back_is_configured( void )
+{
+       return be_monitor != NULL;
+}
+
 int
 monitor_back_register_entry(
-               Entry                   *e,
-               monitor_callback_t      *cb )
+       Entry                   *e,
+       monitor_callback_t      *cb )
 {
-       monitor_info_t  *mi = ( monitor_info_t * )be_monitor->be_private;
+       monitor_info_t  *mi;
+
+       if ( be_monitor == NULL ) {
+               Debug( LDAP_DEBUG_ANY,
+                       "monitor_back_register_entry(\"%s\"): "
+                       "monitor database not configured.\n",
+                       e->e_name.bv_val, 0, 0 );
+               return -1;
+       }
+
+       mi = ( monitor_info_t * )be_monitor->be_private;
 
        assert( mi != NULL );
        assert( e != NULL );
@@ -364,15 +423,27 @@ done:;
 
 int
 monitor_back_register_entry_parent(
-               Entry                   *e,
-               monitor_callback_t      *cb,
-               struct berval           *base,
-               int                     scope,
-               struct berval           *filter )
+       Entry                   *e,
+       monitor_callback_t      *cb,
+       struct berval           *base,
+       int                     scope,
+       struct berval           *filter )
 {
-       monitor_info_t  *mi = ( monitor_info_t * )be_monitor->be_private;
+       monitor_info_t  *mi;
        struct berval   ndn = BER_BVNULL;
 
+       if ( be_monitor == NULL ) {
+               Debug( LDAP_DEBUG_ANY,
+                       "monitor_back_register_entry_parent(base=\"%s\" scope=%s filter=\"%s\"): "
+                       "monitor database not configured.\n",
+                       BER_BVISNULL( base ) ? "" : base->bv_val,
+                       scope == LDAP_SCOPE_BASE ? "base" : ( scope == LDAP_SCOPE_ONELEVEL ? "one" : "subtree" ),
+                       BER_BVISNULL( filter ) ? "" : filter->bv_val );
+               return -1;
+       }
+
+       mi = ( monitor_info_t * )be_monitor->be_private;
+
        assert( mi != NULL );
        assert( e != NULL );
        assert( e->e_private == NULL );
@@ -399,7 +470,7 @@ monitor_back_register_entry_parent(
                if ( monitor_filter2ndn( base, scope, filter, &ndn ) ) {
                        /* entry does not exist */
                        Debug( LDAP_DEBUG_ANY,
-                               "monitor_back_register_entry_*(\"\"): "
+                               "monitor_back_register_entry_parent(\"\"): "
                                "base=%s scope=%d filter=%s : "
                                "unable to find entry\n",
                                base->bv_val ? base->bv_val : "\"\"",
@@ -423,7 +494,7 @@ monitor_back_register_entry_parent(
                if ( mp_parent->mp_flags & MONITOR_F_VOLATILE ) {
                        /* entry is volatile; cannot append callback */
                        Debug( LDAP_DEBUG_ANY,
-                               "monitor_back_register_entry_*(\"%s\"): "
+                               "monitor_back_register_entry_parent(\"%s\"): "
                                "entry is volatile\n",
                                e_parent->e_name.bv_val, 0, 0 );
                        rc = -1;
@@ -564,11 +635,14 @@ monitor_filter2ndn_cb( Operation *op, SlapReply *rs )
 }
 
 int
-monitor_filter2ndn( struct berval *base, int scope, struct berval *filter,
-               struct berval *ndn )
+monitor_filter2ndn(
+       struct berval   *base,
+       int             scope,
+       struct berval   *filter,
+       struct berval   *ndn )
 {
        Connection      conn = { 0 };
-       char            opbuf[OPERATION_BUFFER_SIZE];
+       OperationBuffer opbuf;
        Operation       *op;
        SlapReply       rs = { 0 };
        slap_callback   cb = { NULL, monitor_filter2ndn_cb, NULL, NULL };
@@ -580,13 +654,17 @@ monitor_filter2ndn( struct berval *base, int scope, struct berval *filter,
                return -1;
        }
 
-       op = (Operation *)opbuf;
+       op = (Operation *) &opbuf;
        connection_fake_init( &conn, op, &conn );
 
        op->o_tag = LDAP_REQ_SEARCH;
 
        /* use global malloc for now */
-       op->o_tmpmemctx = NULL;
+       if ( op->o_tmpmemctx ) {
+               /* FIXME: connection_fake_init() calls slap_sl_mem_create, so we destroy it for now */
+               slap_sl_mem_destroy( NULL, op->o_tmpmemctx );
+               op->o_tmpmemctx = NULL;
+       }
        op->o_tmpmfuncs = &ch_mfuncs;
 
        op->o_bd = be_monitor;
@@ -599,7 +677,7 @@ monitor_filter2ndn( struct berval *base, int scope, struct berval *filter,
        } else {
                if ( dnPrettyNormal( NULL, base, &op->o_req_dn, &op->o_req_ndn,
                                        op->o_tmpmemctx ) ) {
-                       /* error */
+                       return -1;
                }
        }
 
@@ -619,6 +697,9 @@ monitor_filter2ndn( struct berval *base, int scope, struct berval *filter,
        op->o_nocaching = 1;
        op->o_managedsait = SLAP_CONTROL_NONCRITICAL;
 
+       op->o_dn = be_monitor->be_rootdn;
+       op->o_ndn = be_monitor->be_rootndn;
+
        rc = op->o_bd->be_search( op, &rs );
 
        filter_free_x( op, op->ors_filter );
@@ -652,15 +733,33 @@ monitor_filter2ndn( struct berval *base, int scope, struct berval *filter,
 
 int
 monitor_back_register_entry_attrs(
-               struct berval           *ndn_in,
-               Attribute               *a,
-               monitor_callback_t      *cb,
-               struct berval           *base,
-               int                     scope,
-               struct berval           *filter )
+       struct berval           *ndn_in,
+       Attribute               *a,
+       monitor_callback_t      *cb,
+       struct berval           *base,
+       int                     scope,
+       struct berval           *filter )
 {
-       monitor_info_t  *mi = ( monitor_info_t * )be_monitor->be_private;
+       monitor_info_t  *mi;
        struct berval   ndn = BER_BVNULL;
+       char            *fname = ( a == NULL ? "callback" : "attrs" );
+
+       if ( be_monitor == NULL ) {
+               char            buf[ SLAP_TEXT_BUFLEN ];
+
+               snprintf( buf, sizeof( buf ),
+                       "monitor_back_register_entry_%s(base=\"%s\" scope=%s filter=\"%s\"): "
+                       "monitor database not configured.\n",
+                       fname,
+                       BER_BVISNULL( base ) ? "" : base->bv_val,
+                       scope == LDAP_SCOPE_BASE ? "base" : ( scope == LDAP_SCOPE_ONELEVEL ? "one" : "subtree" ),
+                       BER_BVISNULL( filter ) ? "" : filter->bv_val );
+               Debug( LDAP_DEBUG_ANY, "%s\n", buf, 0, 0 );
+
+               return -1;
+       }
+
+       mi = ( monitor_info_t * )be_monitor->be_private;
 
        assert( mi != NULL );
 
@@ -678,9 +777,9 @@ monitor_back_register_entry_attrs(
        {
                /* need a filter */
                Debug( LDAP_DEBUG_ANY,
-                       "monitor_back_register_entry_*(\"\"): "
+                       "monitor_back_register_entry_%s(\"\"): "
                        "need a valid filter\n",
-                       0, 0, 0 );
+                       fname, 0, 0 );
                return -1;
        }
 
@@ -694,13 +793,18 @@ monitor_back_register_entry_attrs(
 
                if ( BER_BVISNULL( &ndn ) ) {
                        if ( monitor_filter2ndn( base, scope, filter, &ndn ) ) {
-                               /* entry does not exist */
-                               Debug( LDAP_DEBUG_ANY,
-                                       "monitor_back_register_entry_*(\"\"): "
+                               char            buf[ SLAP_TEXT_BUFLEN ];
+
+                               snprintf( buf, sizeof( buf ),
+                                       "monitor_back_register_entry_%s(\"\"): "
                                        "base=%s scope=%d filter=%s : "
                                        "unable to find entry\n",
+                                       fname,
                                        base->bv_val ? base->bv_val : "\"\"",
                                        scope, filter->bv_val );
+
+                               /* entry does not exist */
+                               Debug( LDAP_DEBUG_ANY, "%s\n", buf, 0, 0 );
                                return -1;
                        }
 
@@ -710,9 +814,9 @@ monitor_back_register_entry_attrs(
                if ( monitor_cache_get( mi, &ndn, &e ) != 0 ) {
                        /* entry does not exist */
                        Debug( LDAP_DEBUG_ANY,
-                               "monitor_back_register_entry_*(\"%s\"): "
+                               "monitor_back_register_entry_%s(\"%s\"): "
                                "entry does not exist\n",
-                               ndn.bv_val, 0, 0 );
+                               fname, ndn.bv_val, 0 );
                        rc = -1;
                        goto done;
                }
@@ -723,9 +827,9 @@ monitor_back_register_entry_attrs(
                if ( mp->mp_flags & MONITOR_F_VOLATILE ) {
                        /* entry is volatile; cannot append callback */
                        Debug( LDAP_DEBUG_ANY,
-                               "monitor_back_register_entry_*(\"%s\"): "
+                               "monitor_back_register_entry_%s(\"%s\"): "
                                "entry is volatile\n",
-                               e->e_name.bv_val, 0, 0 );
+                               fname, e->e_name.bv_val, 0 );
                        rc = -1;
                        goto done;
                }
@@ -737,9 +841,9 @@ monitor_back_register_entry_attrs(
                        *atp = attrs_dup( a );
                        if ( *atp == NULL ) {
                                Debug( LDAP_DEBUG_ANY,
-                                       "monitor_back_register_entry_*(\"%s\"): "
+                                       "monitor_back_register_entry_%s(\"%s\"): "
                                        "attrs_dup() failed\n",
-                                       e->e_name.bv_val, 0, 0 );
+                                       fname, e->e_name.bv_val, 0 );
                                rc = -1;
                                goto done;
                        }
@@ -809,11 +913,11 @@ done:;
 
 int
 monitor_back_register_entry_callback(
-               struct berval           *ndn,
-               monitor_callback_t      *cb,
-               struct berval           *base,
-               int                     scope,
-               struct berval           *filter )
+       struct berval           *ndn,
+       monitor_callback_t      *cb,
+       struct berval           *base,
+       int                     scope,
+       struct berval           *filter )
 {
        return monitor_back_register_entry_attrs( ndn, NULL, cb,
                        base, scope, filter );
@@ -836,7 +940,9 @@ monitor_back_get_subsys( const char *name )
 }
 
 monitor_subsys_t *
-monitor_back_get_subsys_by_dn( struct berval *ndn, int sub )
+monitor_back_get_subsys_by_dn(
+       struct berval   *ndn,
+       int             sub )
 {
        if ( monitor_subsys != NULL ) {
                int     i;
@@ -862,82 +968,27 @@ monitor_back_get_subsys_by_dn( struct berval *ndn, int sub )
 
 int
 monitor_back_initialize(
-       BackendInfo     *bi
-)
+       BackendInfo     *bi )
 {
-       monitor_subsys_t        *ms;
        static char             *controls[] = {
                LDAP_CONTROL_MANAGEDSAIT,
                NULL
        };
 
-       bi->bi_controls = controls;
-
-       bi->bi_init = 0;
-       bi->bi_open = 0;
-       bi->bi_config = monitor_back_config;
-       bi->bi_close = 0;
-       bi->bi_destroy = 0;
-
-       bi->bi_db_init = monitor_back_db_init;
-       bi->bi_db_config = monitor_back_db_config;
-       bi->bi_db_open = monitor_back_db_open;
-       bi->bi_db_close = 0;
-       bi->bi_db_destroy = monitor_back_db_destroy;
-
-       bi->bi_op_bind = monitor_back_bind;
-       bi->bi_op_unbind = 0;
-       bi->bi_op_search = monitor_back_search;
-       bi->bi_op_compare = monitor_back_compare;
-       bi->bi_op_modify = monitor_back_modify;
-       bi->bi_op_modrdn = 0;
-       bi->bi_op_add = 0;
-       bi->bi_op_delete = 0;
-       bi->bi_op_abandon = 0;
-
-       bi->bi_extended = 0;
-
-       bi->bi_entry_release_rw = 0;
-       bi->bi_chk_referrals = 0;
-       bi->bi_operational = monitor_back_operational;
-
-       /*
-        * hooks for slap tools
-        */
-       bi->bi_tool_entry_open = 0;
-       bi->bi_tool_entry_close = 0;
-       bi->bi_tool_entry_first = 0;
-       bi->bi_tool_entry_next = 0;
-       bi->bi_tool_entry_get = 0;
-       bi->bi_tool_entry_put = 0;
-       bi->bi_tool_entry_reindex = 0;
-       bi->bi_tool_sync = 0;
-       bi->bi_tool_dn2id_get = 0;
-       bi->bi_tool_id2entry_get = 0;
-       bi->bi_tool_entry_modify = 0;
-
-       bi->bi_connection_init = 0;
-       bi->bi_connection_destroy = 0;
-
-       for ( ms = known_monitor_subsys; ms->mss_name != NULL; ms++ ) {
-               if ( monitor_back_register_subsys( ms ) ) {
-                       return -1;
-               }
-       }
-
-       return 0;
-}
+       static ConfigTable monitorcfg[] = {
+               { NULL, NULL, 0, 0, 0, ARG_IGNORED,
+                       NULL, NULL, NULL, NULL }
+       };
 
-int
-monitor_back_db_init(
-       BackendDB       *be
-)
-{
-       monitor_info_t  *mi;
-       int             i, rc;
-       struct berval   dn, ndn;
-       struct berval   bv;
-       const char      *text;
+       static ConfigOCs monitorocs[] = {
+               { "( OLcfgDbOc:4.1 "
+                       "NAME 'olcMonitorConfig' "
+                       "DESC 'Monitor backend configuration' "
+                       "SUP olcDatabaseConfig "
+                       ")",
+                               Cft_Database, monitorcfg },
+               { NULL, 0, NULL }
+       };
 
        struct m_s {
                char    *name;
@@ -945,20 +996,13 @@ monitor_back_db_init(
                slap_mask_t flags;
                int     offset;
        } moc[] = {
-               { "monitor", "( 1.3.6.1.4.1.4203.666.3.2 "
+               { "monitor", "( 1.3.6.1.4.1.4203.666.3.16.1 "
                        "NAME 'monitor' "
                        "DESC 'OpenLDAP system monitoring' "
                        "SUP top STRUCTURAL "
                        "MUST cn "
                        "MAY ( "
                                "description "
-                               "$ l "
-#if 0  /* temporarily disabled */
-                               "$ st "
-                               "$ street "
-                               "$ postalAddress "
-                               "$ postalCode "
-#endif
                                "$ seeAlso "
                                "$ labeledURI "
                                "$ monitoredInfo "
@@ -966,44 +1010,44 @@ monitor_back_db_init(
                                "$ monitorOverlay "
                        ") )", SLAP_OC_OPERATIONAL|SLAP_OC_HIDE,
                        offsetof(monitor_info_t, mi_oc_monitor) },
-               { "monitorServer", "( 1.3.6.1.4.1.4203.666.3.7 "
+               { "monitorServer", "( 1.3.6.1.4.1.4203.666.3.16.2 "
                        "NAME 'monitorServer' "
                        "DESC 'Server monitoring root entry' "
                        "SUP monitor STRUCTURAL )", SLAP_OC_OPERATIONAL|SLAP_OC_HIDE,
                        offsetof(monitor_info_t, mi_oc_monitorServer) },
-               { "monitorContainer", "( 1.3.6.1.4.1.4203.666.3.8 "
+               { "monitorContainer", "( 1.3.6.1.4.1.4203.666.3.16.3 "
                        "NAME 'monitorContainer' "
                        "DESC 'monitor container class' "
                        "SUP monitor STRUCTURAL )", SLAP_OC_OPERATIONAL|SLAP_OC_HIDE,
                        offsetof(monitor_info_t, mi_oc_monitorContainer) },
-               { "monitorCounterObject", "( 1.3.6.1.4.1.4203.666.3.9 "
+               { "monitorCounterObject", "( 1.3.6.1.4.1.4203.666.3.16.4 "
                        "NAME 'monitorCounterObject' "
                        "DESC 'monitor counter class' "
                        "SUP monitor STRUCTURAL )", SLAP_OC_OPERATIONAL|SLAP_OC_HIDE,
                        offsetof(monitor_info_t, mi_oc_monitorCounterObject) },
-               { "monitorOperation", "( 1.3.6.1.4.1.4203.666.3.10 "
+               { "monitorOperation", "( 1.3.6.1.4.1.4203.666.3.16.5 "
                        "NAME 'monitorOperation' "
                        "DESC 'monitor operation class' "
                        "SUP monitor STRUCTURAL )", SLAP_OC_OPERATIONAL|SLAP_OC_HIDE,
                        offsetof(monitor_info_t, mi_oc_monitorOperation) },
-               { "monitorConnection", "( 1.3.6.1.4.1.4203.666.3.11 "
+               { "monitorConnection", "( 1.3.6.1.4.1.4203.666.3.16.6 "
                        "NAME 'monitorConnection' "
                        "DESC 'monitor connection class' "
                        "SUP monitor STRUCTURAL )", SLAP_OC_OPERATIONAL|SLAP_OC_HIDE,
                        offsetof(monitor_info_t, mi_oc_monitorConnection) },
-               { "managedObject", "( 1.3.6.1.4.1.4203.666.3.12 "
+               { "managedObject", "( 1.3.6.1.4.1.4203.666.3.16.7 "
                        "NAME 'managedObject' "
                        "DESC 'monitor managed entity class' "
                        "SUP monitor STRUCTURAL )", SLAP_OC_OPERATIONAL|SLAP_OC_HIDE,
                        offsetof(monitor_info_t, mi_oc_managedObject) },
-               { "monitoredObject", "( 1.3.6.1.4.1.4203.666.3.14 "
+               { "monitoredObject", "( 1.3.6.1.4.1.4203.666.3.16.8 "
                        "NAME 'monitoredObject' "
                        "DESC 'monitor monitored entity class' "
                        "SUP monitor STRUCTURAL )", SLAP_OC_OPERATIONAL|SLAP_OC_HIDE,
                        offsetof(monitor_info_t, mi_oc_monitoredObject) },
                { NULL, NULL, 0, -1 }
        }, mat[] = {
-               { "monitoredInfo", "( 1.3.6.1.4.1.4203.666.1.14 "
+               { "monitoredInfo", "( 1.3.6.1.4.1.4203.666.1.55.1 "
                        "NAME 'monitoredInfo' "
                        "DESC 'monitored info' "
                        /* "SUP name " */
@@ -1013,12 +1057,12 @@ monitor_back_db_init(
                        "NO-USER-MODIFICATION "
                        "USAGE directoryOperation )", SLAP_AT_HIDE,
                        offsetof(monitor_info_t, mi_ad_monitoredInfo) },
-               { "managedInfo", "( 1.3.6.1.4.1.4203.666.1.15 "
+               { "managedInfo", "( 1.3.6.1.4.1.4203.666.1.55.2 "
                        "NAME 'managedInfo' "
                        "DESC 'monitor managed info' "
                        "SUP name )", SLAP_AT_HIDE,
                        offsetof(monitor_info_t, mi_ad_managedInfo) },
-               { "monitorCounter", "( 1.3.6.1.4.1.4203.666.1.16 "
+               { "monitorCounter", "( 1.3.6.1.4.1.4203.666.1.55.3 "
                        "NAME 'monitorCounter' "
                        "DESC 'monitor counter' "
                        "EQUALITY integerMatch "
@@ -1027,28 +1071,28 @@ monitor_back_db_init(
                        "NO-USER-MODIFICATION "
                        "USAGE directoryOperation )", SLAP_AT_HIDE,
                        offsetof(monitor_info_t, mi_ad_monitorCounter) },
-               { "monitorOpCompleted", "( 1.3.6.1.4.1.4203.666.1.17 "
+               { "monitorOpCompleted", "( 1.3.6.1.4.1.4203.666.1.55.4 "
                        "NAME 'monitorOpCompleted' "
                        "DESC 'monitor completed operations' "
                        "SUP monitorCounter "
                        "NO-USER-MODIFICATION "
                        "USAGE directoryOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
                        offsetof(monitor_info_t, mi_ad_monitorOpCompleted) },
-               { "monitorOpInitiated", "( 1.3.6.1.4.1.4203.666.1.18 "
+               { "monitorOpInitiated", "( 1.3.6.1.4.1.4203.666.1.55.5 "
                        "NAME 'monitorOpInitiated' "
                        "DESC 'monitor initiated operations' "
                        "SUP monitorCounter "
                        "NO-USER-MODIFICATION "
                        "USAGE directoryOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
                        offsetof(monitor_info_t, mi_ad_monitorOpInitiated) },
-               { "monitorConnectionNumber", "( 1.3.6.1.4.1.4203.666.1.19 "
+               { "monitorConnectionNumber", "( 1.3.6.1.4.1.4203.666.1.55.6 "
                        "NAME 'monitorConnectionNumber' "
                        "DESC 'monitor connection number' "
                        "SUP monitorCounter "
                        "NO-USER-MODIFICATION "
                        "USAGE directoryOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
                        offsetof(monitor_info_t, mi_ad_monitorConnectionNumber) },
-               { "monitorConnectionAuthzDN", "( 1.3.6.1.4.1.4203.666.1.20 "
+               { "monitorConnectionAuthzDN", "( 1.3.6.1.4.1.4203.666.1.55.7 "
                        "NAME 'monitorConnectionAuthzDN' "
                        "DESC 'monitor connection authorization DN' "
                        /* "SUP distinguishedName " */
@@ -1057,21 +1101,21 @@ monitor_back_db_init(
                        "NO-USER-MODIFICATION "
                        "USAGE directoryOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
                        offsetof(monitor_info_t, mi_ad_monitorConnectionAuthzDN) },
-               { "monitorConnectionLocalAddress", "( 1.3.6.1.4.1.4203.666.1.21 "
+               { "monitorConnectionLocalAddress", "( 1.3.6.1.4.1.4203.666.1.55.8 "
                        "NAME 'monitorConnectionLocalAddress' "
                        "DESC 'monitor connection local address' "
                        "SUP monitoredInfo "
                        "NO-USER-MODIFICATION "
                        "USAGE directoryOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
                        offsetof(monitor_info_t, mi_ad_monitorConnectionLocalAddress) },
-               { "monitorConnectionPeerAddress", "( 1.3.6.1.4.1.4203.666.1.22 "
+               { "monitorConnectionPeerAddress", "( 1.3.6.1.4.1.4203.666.1.55.9 "
                        "NAME 'monitorConnectionPeerAddress' "
                        "DESC 'monitor connection peer address' "
                        "SUP monitoredInfo "
                        "NO-USER-MODIFICATION "
                        "USAGE directoryOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
                        offsetof(monitor_info_t, mi_ad_monitorConnectionPeerAddress) },
-               { "monitorTimestamp", "( 1.3.6.1.4.1.4203.666.1.24 "
+               { "monitorTimestamp", "( 1.3.6.1.4.1.4203.666.1.55.10 "
                        "NAME 'monitorTimestamp' "
                        "DESC 'monitor timestamp' "
                        "EQUALITY generalizedTimeMatch "
@@ -1081,14 +1125,14 @@ monitor_back_db_init(
                        "NO-USER-MODIFICATION "
                        "USAGE directoryOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
                        offsetof(monitor_info_t, mi_ad_monitorTimestamp) },
-               { "monitorOverlay", "( 1.3.6.1.4.1.4203.666.1.27 "
+               { "monitorOverlay", "( 1.3.6.1.4.1.4203.666.1.55.11 "
                        "NAME 'monitorOverlay' "
                        "DESC 'name of overlays defined for a given database' "
                        "SUP monitoredInfo "
                        "NO-USER-MODIFICATION "
                        "USAGE directoryOperation )", SLAP_AT_HIDE,
                        offsetof(monitor_info_t, mi_ad_monitorOverlay) },
-               { "readOnly", "( 1.3.6.1.4.1.4203.666.1.31 "
+               { "readOnly", "( 1.3.6.1.4.1.4203.666.1.55.12 "
                        "NAME 'readOnly' "
                        "DESC 'read/write status of a given database' "
                        "EQUALITY booleanMatch "
@@ -1096,89 +1140,89 @@ monitor_back_db_init(
                        "SINGLE-VALUE "
                        "USAGE directoryOperation )", SLAP_AT_HIDE,
                        offsetof(monitor_info_t, mi_ad_readOnly) },
-               { "restrictedOperation", "( 1.3.6.1.4.1.4203.666.1.32 "
+               { "restrictedOperation", "( 1.3.6.1.4.1.4203.666.1.55.13 "
                        "NAME 'restrictedOperation' "
                        "DESC 'name of restricted operation for a given database' "
                        "SUP managedInfo )", SLAP_AT_HIDE,
                        offsetof(monitor_info_t, mi_ad_restrictedOperation ) },
-               { "monitorConnectionProtocol", "( 1.3.6.1.4.1.4203.666.1.39 "
+               { "monitorConnectionProtocol", "( 1.3.6.1.4.1.4203.666.1.55.14 "
                        "NAME 'monitorConnectionProtocol' "
                        "DESC 'monitor connection protocol' "
                        "SUP monitoredInfo "
                        "NO-USER-MODIFICATION "
                        "USAGE directoryOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
                        offsetof(monitor_info_t, mi_ad_monitorConnectionProtocol) },
-               { "monitorConnectionOpsReceived", "( 1.3.6.1.4.1.4203.666.1.40 "
+               { "monitorConnectionOpsReceived", "( 1.3.6.1.4.1.4203.666.1.55.15 "
                        "NAME 'monitorConnectionOpsReceived' "
                        "DESC 'monitor number of operations received by the connection' "
                        "SUP monitorCounter "
                        "NO-USER-MODIFICATION "
                        "USAGE directoryOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
                        offsetof(monitor_info_t, mi_ad_monitorConnectionOpsReceived) },
-               { "monitorConnectionOpsExecuting", "( 1.3.6.1.4.1.4203.666.1.41 "
+               { "monitorConnectionOpsExecuting", "( 1.3.6.1.4.1.4203.666.1.55.16 "
                        "NAME 'monitorConnectionOpsExecuting' "
                        "DESC 'monitor number of operations in execution within the connection' "
                        "SUP monitorCounter "
                        "NO-USER-MODIFICATION "
                        "USAGE directoryOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
                        offsetof(monitor_info_t, mi_ad_monitorConnectionOpsExecuting) },
-               { "monitorConnectionOpsPending", "( 1.3.6.1.4.1.4203.666.1.42 "
+               { "monitorConnectionOpsPending", "( 1.3.6.1.4.1.4203.666.1.55.17 "
                        "NAME 'monitorConnectionOpsPending' "
                        "DESC 'monitor number of pending operations within the connection' "
                        "SUP monitorCounter "
                        "NO-USER-MODIFICATION "
                        "USAGE directoryOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
                        offsetof(monitor_info_t, mi_ad_monitorConnectionOpsPending) },
-               { "monitorConnectionOpsCompleted", "( 1.3.6.1.4.1.4203.666.1.43 "
+               { "monitorConnectionOpsCompleted", "( 1.3.6.1.4.1.4203.666.1.55.18 "
                        "NAME 'monitorConnectionOpsCompleted' "
                        "DESC 'monitor number of operations completed within the connection' "
                        "SUP monitorCounter "
                        "NO-USER-MODIFICATION "
                        "USAGE directoryOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
                        offsetof(monitor_info_t, mi_ad_monitorConnectionOpsCompleted) },
-               { "monitorConnectionGet", "( 1.3.6.1.4.1.4203.666.1.44 "
+               { "monitorConnectionGet", "( 1.3.6.1.4.1.4203.666.1.55.19 "
                        "NAME 'monitorConnectionGet' "
-                       "DESC 'monitor FIXME???' "
+                       "DESC 'number of times connection_get() was called so far' "
                        "SUP monitorCounter "
                        "NO-USER-MODIFICATION "
                        "USAGE directoryOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
                        offsetof(monitor_info_t, mi_ad_monitorConnectionGet) },
-               { "monitorConnectionRead", "( 1.3.6.1.4.1.4203.666.1.45 "
+               { "monitorConnectionRead", "( 1.3.6.1.4.1.4203.666.1.55.20 "
                        "NAME 'monitorConnectionRead' "
-                       "DESC 'monitor FIXME???' "
+                       "DESC 'number of times connection_read() was called so far' "
                        "SUP monitorCounter "
                        "NO-USER-MODIFICATION "
                        "USAGE directoryOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
                        offsetof(monitor_info_t, mi_ad_monitorConnectionRead) },
-               { "monitorConnectionWrite", "( 1.3.6.1.4.1.4203.666.1.46 "
+               { "monitorConnectionWrite", "( 1.3.6.1.4.1.4203.666.1.55.21 "
                        "NAME 'monitorConnectionWrite' "
-                       "DESC 'monitor FIXME???' "
+                       "DESC 'number of times connection_write() was called so far' "
                        "SUP monitorCounter "
                        "NO-USER-MODIFICATION "
                        "USAGE directoryOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
                        offsetof(monitor_info_t, mi_ad_monitorConnectionWrite) },
-               { "monitorConnectionMask", "( 1.3.6.1.4.1.4203.666.1.47 "
+               { "monitorConnectionMask", "( 1.3.6.1.4.1.4203.666.1.55.22 "
                        "NAME 'monitorConnectionMask' "
                        "DESC 'monitor connection mask' "
                        "SUP monitoredInfo "
                        "NO-USER-MODIFICATION "
                        "USAGE directoryOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
                        offsetof(monitor_info_t, mi_ad_monitorConnectionMask) },
-               { "monitorConnectionListener", "( 1.3.6.1.4.1.4203.666.1.48 "
+               { "monitorConnectionListener", "( 1.3.6.1.4.1.4203.666.1.55.23 "
                        "NAME 'monitorConnectionListener' "
                        "DESC 'monitor connection listener' "
                        "SUP monitoredInfo "
                        "NO-USER-MODIFICATION "
                        "USAGE directoryOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
                        offsetof(monitor_info_t, mi_ad_monitorConnectionListener) },
-               { "monitorConnectionPeerDomain", "( 1.3.6.1.4.1.4203.666.1.49 "
+               { "monitorConnectionPeerDomain", "( 1.3.6.1.4.1.4203.666.1.55.24 "
                        "NAME 'monitorConnectionPeerDomain' "
                        "DESC 'monitor connection peer domain' "
                        "SUP monitoredInfo "
                        "NO-USER-MODIFICATION "
                        "USAGE directoryOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
                        offsetof(monitor_info_t, mi_ad_monitorConnectionPeerDomain) },
-               { "monitorConnectionStartTime", "( 1.3.6.1.4.1.4203.666.1.50 "
+               { "monitorConnectionStartTime", "( 1.3.6.1.4.1.4203.666.1.55.25 "
                        "NAME 'monitorConnectionStartTime' "
                        "DESC 'monitor connection start time' "
                        "SUP monitorTimestamp "
@@ -1186,7 +1230,7 @@ monitor_back_db_init(
                        "NO-USER-MODIFICATION "
                        "USAGE directoryOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
                        offsetof(monitor_info_t, mi_ad_monitorConnectionStartTime) },
-               { "monitorConnectionActivityTime", "( 1.3.6.1.4.1.4203.666.1.51 "
+               { "monitorConnectionActivityTime", "( 1.3.6.1.4.1.4203.666.1.55.26 "
                        "NAME 'monitorConnectionActivityTime' "
                        "DESC 'monitor connection activity time' "
                        "SUP monitorTimestamp "
@@ -1194,113 +1238,35 @@ monitor_back_db_init(
                        "NO-USER-MODIFICATION "
                        "USAGE directoryOperation )", SLAP_AT_FINAL|SLAP_AT_HIDE,
                        offsetof(monitor_info_t, mi_ad_monitorConnectionActivityTime) },
-#ifdef INTEGRATE_CORE_SCHEMA
-               { NULL, NULL, 0, -1 },  /* description */
-               { NULL, NULL, 0, -1 },  /* seeAlso */
-               { NULL, NULL, 0, -1 },  /* l */
-               { NULL, NULL, 0, -1 },  /* labeledURI */
-#endif /* INTEGRATE_CORE_SCHEMA */
-               { NULL, NULL, 0, -1 }
-       }, mat_core[] = {
-               { "description", "( 2.5.4.13 "
-                       "NAME 'description' "
-                       "DESC 'RFC2256: descriptive information' "
-                       "EQUALITY caseIgnoreMatch "
-                       "SUBSTR caseIgnoreSubstringsMatch "
-                       "SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{1024} )", 0,
-                       offsetof(monitor_info_t, mi_ad_description) },
-               { "seeAlso", "( 2.5.4.34 "
-                       "NAME 'seeAlso' "
-                       "DESC 'RFC2256: DN of related object' "
-                       "SUP distinguishedName )", 0,
-                       offsetof(monitor_info_t, mi_ad_seeAlso) },
-               { "l", "( 2.5.4.7 "
-                       "NAME ( 'l' 'localityName' ) "
-                       "DESC 'RFC2256: locality which this object resides in' "
-                       "SUP name )", 0,
-                       offsetof(monitor_info_t, mi_ad_l) },
-#ifdef MONITOR_DEFINE_LABELEDURI
-               { "labeledURI", "( 1.3.6.1.4.1.250.1.57 "
-                       "NAME 'labeledURI' "
-                       "DESC 'RFC2079: Uniform Resource Identifier with optional label' "
-                       "EQUALITY caseExactMatch "
-                       "SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 )", 0,
-                       offsetof(monitor_info_t, mi_ad_labeledURI) },
-#endif /* MONITOR_DEFINE_LABELEDURI */
+               { "monitorIsShadow", "( 1.3.6.1.4.1.4203.666.1.55.27 "
+                       "NAME 'monitorIsShadow' "
+                       "DESC 'TRUE if the database is shadow' "
+                       "EQUALITY booleanMatch "
+                       "SYNTAX 1.3.6.1.4.1.1466.115.121.1.7 "
+                       "SINGLE-VALUE "
+                       "USAGE directoryOperation )", SLAP_AT_HIDE,
+                       offsetof(monitor_info_t, mi_ad_monitorIsShadow) },
+               { "monitorUpdateRef", "( 1.3.6.1.4.1.4203.666.1.55.28 "
+                       "NAME 'monitorUpdateRef' "
+                       "DESC 'update referral for shadow databases' "
+                       "SUP monitoredInfo "
+                       "SINGLE-VALUE "
+                       "USAGE directoryOperation )", SLAP_AT_HIDE,
+                       offsetof(monitor_info_t, mi_ad_monitorUpdateRef) },
+               { "monitorRuntimeConfig", "( 1.3.6.1.4.1.4203.666.1.55.29 "
+                       "NAME 'monitorRuntimeConfig' "
+                       "DESC 'TRUE if component allows runtime configuration' "
+                       "EQUALITY booleanMatch "
+                       "SYNTAX 1.3.6.1.4.1.1466.115.121.1.7 "
+                       "SINGLE-VALUE "
+                       "USAGE directoryOperation )", SLAP_AT_HIDE,
+                       offsetof(monitor_info_t, mi_ad_monitorRuntimeConfig) },
                { NULL, NULL, 0, -1 }
        };
-       
-       /*
-        * database monitor can be defined once only
-        */
-       if ( be_monitor ) {
-               Debug( LDAP_DEBUG_ANY,
-                       "only one monitor backend is allowed\n", 0, 0, 0 );
-               return( -1 );
-       }
-       be_monitor = be;
 
-       /* indicate system schema supported */
-       SLAP_BFLAGS(be) |= SLAP_BFLAG_MONITOR;
-
-       dn.bv_val = SLAPD_MONITOR_DN;
-       dn.bv_len = sizeof( SLAPD_MONITOR_DN ) - 1;
-
-       rc = dnNormalize( 0, NULL, NULL, &dn, &ndn, NULL );
-       if( rc != LDAP_SUCCESS ) {
-               Debug( LDAP_DEBUG_ANY,
-                       "unable to normalize monitor DN \"%s\"\n",
-                       SLAPD_MONITOR_DN, 0, 0 );
-               return -1;
-       }
-
-       ber_dupbv( &bv, &dn );
-       ber_bvarray_add( &be->be_suffix, &bv );
-       ber_bvarray_add( &be->be_nsuffix, &ndn );
-
-       mi = ( monitor_info_t * )ch_calloc( sizeof( monitor_info_t ), 1 );
-       if ( mi == NULL ) {
-               Debug( LDAP_DEBUG_ANY,
-                       "unable to initialize monitor backend\n", 0, 0, 0 );
-               return -1;
-       }
-
-       memset( mi, 0, sizeof( monitor_info_t ) );
-
-       ldap_pvt_thread_mutex_init( &mi->mi_cache_mutex );
-
-       be->be_private = mi;
-       
-#ifdef INTEGRATE_CORE_SCHEMA
-       /* prepare for schema integration */
-       for ( k = 0; mat[ k ].name != NULL; k++ );
-#endif /* INTEGRATE_CORE_SCHEMA */
-
-       for ( i = 0; mat_core[ i ].name != NULL; i++ ) {
-               AttributeDescription    **ad;
-               const char              *text;
-
-               ad = ((AttributeDescription **)&(((char *)mi)[ mat_core[ i ].offset ]));
-               ad[ 0 ] = NULL;
-
-               switch (slap_str2ad( mat_core[ i ].name, ad, &text ) ) {
-               case LDAP_SUCCESS:
-                       break;
-
-#ifdef INTEGRATE_CORE_SCHEMA
-               case LDAP_UNDEFINED_TYPE:
-                       mat[ k ] = mat_core[ i ];
-                       k++;
-                       break;
-#endif /* INTEGRATE_CORE_SCHEMA */
-
-               default:
-                       Debug( LDAP_DEBUG_ANY,
-                               "monitor_back_db_init: %s: %s\n",
-                               mat_core[ i ].name, text, 0 );
-                       return( -1 );
-               }
-       }
+       int                     i, rc;
+       const char              *text;
+       monitor_info_t          *mi = &monitor_info;
 
        /* schema integration */
        for ( i = 0; mat[ i ].name; i++ ) {
@@ -1391,29 +1357,162 @@ monitor_back_db_init(
                ((ObjectClass **)&(((char *)mi)[ moc[ i ].offset ]))[ 0 ] = Oc;
        }
 
+       bi->bi_controls = controls;
+
+       bi->bi_init = 0;
+       bi->bi_open = 0;
+       bi->bi_config = monitor_back_config;
+       bi->bi_close = 0;
+       bi->bi_destroy = 0;
+
+       bi->bi_db_init = monitor_back_db_init;
+#if 0
+       bi->bi_db_config = monitor_back_db_config;
+#endif
+       bi->bi_db_open = monitor_back_db_open;
+       bi->bi_db_close = 0;
+       bi->bi_db_destroy = monitor_back_db_destroy;
+
+       bi->bi_op_bind = monitor_back_bind;
+       bi->bi_op_unbind = 0;
+       bi->bi_op_search = monitor_back_search;
+       bi->bi_op_compare = monitor_back_compare;
+       bi->bi_op_modify = monitor_back_modify;
+       bi->bi_op_modrdn = 0;
+       bi->bi_op_add = 0;
+       bi->bi_op_delete = 0;
+       bi->bi_op_abandon = 0;
+
+       bi->bi_extended = 0;
+
+       bi->bi_entry_release_rw = 0;
+       bi->bi_chk_referrals = 0;
+       bi->bi_operational = monitor_back_operational;
+
+       /*
+        * hooks for slap tools
+        */
+       bi->bi_tool_entry_open = 0;
+       bi->bi_tool_entry_close = 0;
+       bi->bi_tool_entry_first = 0;
+       bi->bi_tool_entry_next = 0;
+       bi->bi_tool_entry_get = 0;
+       bi->bi_tool_entry_put = 0;
+       bi->bi_tool_entry_reindex = 0;
+       bi->bi_tool_sync = 0;
+       bi->bi_tool_dn2id_get = 0;
+       bi->bi_tool_id2entry_get = 0;
+       bi->bi_tool_entry_modify = 0;
+
+       bi->bi_connection_init = 0;
+       bi->bi_connection_destroy = 0;
+
+       /*
+        * configuration objectClasses (fake)
+        */
+       bi->bi_cf_ocs = monitorocs;
+
+       rc = config_register_schema( monitorcfg, monitorocs );
+       if ( rc ) {
+               return rc;
+       }
+
+       return 0;
+}
+
+int
+monitor_back_db_init(
+       BackendDB       *be )
+{
+       int                     rc;
+       struct berval           dn = BER_BVC( SLAPD_MONITOR_DN ),
+                               pdn,
+                               ndn;
+       BackendDB               *be2;
+
+       monitor_subsys_t        *ms;
+
+       /*
+        * register subsys
+        */
+       for ( ms = known_monitor_subsys; ms->mss_name != NULL; ms++ ) {
+               if ( monitor_back_register_subsys( ms ) ) {
+                       return -1;
+               }
+       }
+
+       /*
+        * database monitor can be defined once only
+        */
+       if ( be_monitor != NULL ) {
+               Debug( LDAP_DEBUG_ANY,
+                       "only one monitor database is allowed\n", 0, 0, 0 );
+               return( -1 );
+       }
+       be_monitor = be;
+
+       /* indicate system schema supported */
+       SLAP_BFLAGS(be) |= SLAP_BFLAG_MONITOR;
+
+       rc = dnPrettyNormal( NULL, &dn, &pdn, &ndn, NULL );
+       if( rc != LDAP_SUCCESS ) {
+               Debug( LDAP_DEBUG_ANY,
+                       "unable to normalize/pretty monitor DN \"%s\" (%d)\n",
+                       dn.bv_val, rc, 0 );
+               return -1;
+       }
+
+       ber_bvarray_add( &be->be_suffix, &pdn );
+       ber_bvarray_add( &be->be_nsuffix, &ndn );
+
+       /* NOTE: only one monitor database is allowed,
+        * so we use static storage */
+       ldap_pvt_thread_mutex_init( &monitor_info.mi_cache_mutex );
+
+       be->be_private = &monitor_info;
+
+       be2 = select_backend( &ndn, 0, 0 );
+       if ( be2 != be ) {
+               char    *type = be2->bd_info->bi_type;
+
+               if ( overlay_is_over( be2 ) ) {
+                       slap_overinfo   *oi = (slap_overinfo *)be2->bd_info->bi_private;
+                       type = oi->oi_orig->bi_type;
+               }
+
+               Debug( LDAP_DEBUG_ANY,
+                       "\"monitor\" database serving namingContext \"%s\" "
+                       "is hidden by \"%s\" database serving namingContext \"%s\".\n",
+                       pdn.bv_val, type, be2->be_nsuffix[ 0 ].bv_val );
+               return -1;
+       }
+
        return 0;
 }
 
 int
 monitor_back_db_open(
-       BackendDB       *be
-)
+       BackendDB       *be )
 {
        monitor_info_t          *mi = (monitor_info_t *)be->be_private;
        struct monitor_subsys_t **ms;
-       Entry                   *e, **ep;
+       Entry                   *e, **ep, *root;
        monitor_entry_t         *mp;
        int                     i;
-       char                    buf[ BACKMONITOR_BUFSIZE ],
-                               *end_of_line;
-       struct berval           bv;
+       struct berval           bv, rdn = BER_BVC(SLAPD_MONITOR_DN);
        struct tm               *tms;
 #ifdef HAVE_GMTIME_R
        struct tm               tm_buf;
 #endif
        static char             tmbuf[ LDAP_LUTIL_GENTIME_BUFSIZE ];
-
-       assert( be_monitor );
+       struct berval   desc[] = {
+               BER_BVC("This subtree contains monitoring/managing objects."),
+               BER_BVC("This object contains information about this server."),
+               BER_BVC("Most of the information is held in operational"
+               " attributes, which must be explicitly requested."),
+               BER_BVNULL };
+
+       assert( be_monitor != NULL );
        if ( be != be_monitor ) {
                be_monitor = be;
        }
@@ -1448,43 +1547,18 @@ monitor_back_db_open(
 
        if ( BER_BVISEMPTY( &be->be_rootdn ) ) {
                BER_BVSTR( &mi->mi_creatorsName, SLAPD_ANONYMOUS );
+               BER_BVSTR( &mi->mi_ncreatorsName, SLAPD_ANONYMOUS );
        } else {
                mi->mi_creatorsName = be->be_rootdn;
+               mi->mi_ncreatorsName = be->be_rootndn;
        }
 
        /*
         * creates the "cn=Monitor" entry 
         */
-       snprintf( buf, sizeof( buf ), 
-               "dn: %s\n"
-               "objectClass: %s\n"
-               "structuralObjectClass: %s\n"
-               "cn: Monitor\n"
-               "%s: This subtree contains monitoring/managing objects.\n"
-               "%s: This object contains information about this server.\n"
-#if 0
-               "%s: createTimestamp reflects the time this server instance was created.\n"
-               "%s: modifyTimestamp reflects the time this server instance was last accessed.\n"
-#endif
-               "creatorsName: %s\n"
-               "modifiersName: %s\n"
-               "createTimestamp: %s\n"
-               "modifyTimestamp: %s\n",
-               SLAPD_MONITOR_DN,
-               mi->mi_oc_monitorServer->soc_cname.bv_val,
-               mi->mi_oc_monitorServer->soc_cname.bv_val,
-               mi->mi_ad_description->ad_cname.bv_val,
-               mi->mi_ad_description->ad_cname.bv_val,
-#if 0
-               mi->mi_ad_description->ad_cname.bv_val,
-               mi->mi_ad_description->ad_cname.bv_val,
-#endif
-               mi->mi_creatorsName.bv_val,
-               mi->mi_creatorsName.bv_val,
-               mi->mi_startTime.bv_val,
-               mi->mi_startTime.bv_val );
+       e = monitor_entry_stub( NULL, NULL, &rdn, mi->mi_oc_monitorServer, mi,
+               NULL, NULL );
 
-       e = str2entry( buf );
        if ( e == NULL) {
                Debug( LDAP_DEBUG_ANY,
                        "unable to create \"%s\" entry\n",
@@ -1492,26 +1566,35 @@ monitor_back_db_open(
                return( -1 );
        }
 
-       bv.bv_val = (char *) Versionstr;
-       end_of_line = strchr( Versionstr, '\n' );
-       if ( end_of_line ) {
-               bv.bv_len = end_of_line - Versionstr;
-       } else {
-               bv.bv_len = strlen( Versionstr );
-       }
+       attr_merge_normalize( e, slap_schema.si_ad_description, desc, NULL );
 
-       if ( attr_merge_normalize_one( e, mi->mi_ad_monitoredInfo,
-                               &bv, NULL ) ) {
-               Debug( LDAP_DEBUG_ANY,
-                       "unable to add monitoredInfo to \"%s\" entry\n",
-                       SLAPD_MONITOR_DN, 0, 0 );
-               return( -1 );
-       }
+       bv.bv_val = strchr( (char *) Versionstr, '$' );
+       if ( bv.bv_val != NULL ) {
+               char    *end;
 
-       if ( mi->mi_l.bv_len ) {
-               if ( attr_merge_normalize_one( e, mi->mi_ad_l, &mi->mi_l, NULL ) ) {
+               bv.bv_val++;
+               for ( ; bv.bv_val[ 0 ] == ' '; bv.bv_val++ )
+                       ;
+
+               end = strchr( bv.bv_val, '$' );
+               if ( end != NULL ) {
+                       end--;
+
+                       for ( ; end > bv.bv_val && end[ 0 ] == ' '; end-- )
+                               ;
+
+                       end++;
+
+                       bv.bv_len = end - bv.bv_val;
+
+               } else {
+                       bv.bv_len = strlen( bv.bv_val );
+               }
+
+               if ( attr_merge_normalize_one( e, mi->mi_ad_monitoredInfo,
+                                       &bv, NULL ) ) {
                        Debug( LDAP_DEBUG_ANY,
-                               "unable to add locality to \"%s\" entry\n",
+                               "unable to add monitoredInfo to \"%s\" entry\n",
                                SLAPD_MONITOR_DN, 0, 0 );
                        return( -1 );
                }
@@ -1530,6 +1613,7 @@ monitor_back_db_open(
                        SLAPD_MONITOR_DN, 0, 0 );
                return -1;
        }
+       root = e;
 
        /*      
         * Create all the subsystem specific entries
@@ -1552,46 +1636,23 @@ monitor_back_db_open(
                        return( -1 );
                }
 
-               dn.bv_len += sizeof( SLAPD_MONITOR_DN ); /* 1 for the , */
-               dn.bv_val = ch_malloc( dn.bv_len + 1 );
-               strcpy( dn.bv_val , monitor_subsys[ i ]->mss_rdn.bv_val );
-               strcat( dn.bv_val, "," SLAPD_MONITOR_DN );
-               rc = dnPrettyNormal( NULL, &dn, &monitor_subsys[ i ]->mss_dn,
-                       &monitor_subsys[ i ]->mss_ndn, NULL );
-               free( dn.bv_val );
-               if ( rc != LDAP_SUCCESS ) {
-                       Debug( LDAP_DEBUG_ANY,
-                               "monitor DN \"%s\" is invalid\n", 
-                               dn.bv_val, 0, 0 );
-                       return( -1 );
-               }
+               e = monitor_entry_stub( &root->e_name, &root->e_nname,
+                       &monitor_subsys[ i ]->mss_rdn, mi->mi_oc_monitorContainer, mi,
+                       NULL, NULL );
 
-               snprintf( buf, sizeof( buf ),
-                               "dn: %s\n"
-                               "objectClass: %s\n"
-                               "structuralObjectClass: %s\n"
-                               "cn: %s\n"
-                               "creatorsName: %s\n"
-                               "modifiersName: %s\n"
-                               "createTimestamp: %s\n"
-                               "modifyTimestamp: %s\n",
-                               monitor_subsys[ i ]->mss_dn.bv_val,
-                               mi->mi_oc_monitorContainer->soc_cname.bv_val,
-                               mi->mi_oc_monitorContainer->soc_cname.bv_val,
-                               monitor_subsys[ i ]->mss_name,
-                               mi->mi_creatorsName.bv_val,
-                               mi->mi_creatorsName.bv_val,
-                               mi->mi_startTime.bv_val,
-                               mi->mi_startTime.bv_val );
-               
-               e = str2entry( buf );
-               
                if ( e == NULL) {
                        Debug( LDAP_DEBUG_ANY,
                                "unable to create \"%s\" entry\n", 
                                monitor_subsys[ i ]->mss_dn.bv_val, 0, 0 );
                        return( -1 );
                }
+               monitor_subsys[i]->mss_dn = e->e_name;
+               monitor_subsys[i]->mss_ndn = e->e_nname;
+
+               if ( !BER_BVISNULL( &monitor_subsys[ i ]->mss_desc[ 0 ] ) ) {
+                       attr_merge_normalize( e, slap_schema.si_ad_description,
+                                       monitor_subsys[ i ]->mss_desc, NULL );
+               }
 
                mp = monitor_entrypriv_create();
                if ( mp == NULL ) {
@@ -1612,7 +1673,7 @@ monitor_back_db_open(
                ep = &mp->mp_next;
        }
 
-       assert( be );
+       assert( be != NULL );
 
        be->be_private = mi;
        
@@ -1708,8 +1769,7 @@ monitor_back_config(
        const char      *fname,
        int             lineno,
        int             argc,
-       char            **argv
-)
+       char            **argv )
 {
        /*
         * eventually, will hold backend specific configuration parameters
@@ -1717,42 +1777,61 @@ monitor_back_config(
        return SLAP_CONF_UNKNOWN;
 }
 
+#if 0
 int
 monitor_back_db_config(
        Backend     *be,
        const char  *fname,
        int         lineno,
        int         argc,
-       char        **argv
-)
+       char        **argv )
 {
        monitor_info_t  *mi = ( monitor_info_t * )be->be_private;
 
        /*
         * eventually, will hold database specific configuration parameters
         */
-       if ( strcasecmp( argv[ 0 ], "l" ) == 0 ) {
-               if ( argc != 2 ) {
-                       return 1;
-               }
-               
-               ber_str2bv( argv[ 1 ], 0, 1, &mi->mi_l );
-
-       } else {
-               return SLAP_CONF_UNKNOWN;
-       }
-
-       return( 0 );
+       return SLAP_CONF_UNKNOWN;
 }
+#endif
 
 int
 monitor_back_db_destroy(
-       BackendDB       *be
-)
+       BackendDB       *be )
 {
+       monitor_info_t  *mi = ( monitor_info_t * )be->be_private;
+
+       if ( mi == NULL ) {
+               return -1;
+       }
+
        /*
         * FIXME: destroys all the data
         */
+       /* NOTE: mi points to static storage; don't free it */
+       
+       (void)monitor_cache_destroy( mi );
+
+       if ( monitor_subsys ) {
+               int     i;
+
+               for ( i = 0; monitor_subsys[ i ] != NULL; i++ ) {
+                       if ( monitor_subsys[ i ]->mss_destroy ) {
+                               monitor_subsys[ i ]->mss_destroy( be, monitor_subsys[ i ] );
+                       }
+
+                       if ( !BER_BVISNULL( &monitor_subsys[ i ]->mss_rdn ) ) {
+                               ch_free( monitor_subsys[ i ]->mss_rdn.bv_val );
+                       }
+               }
+
+               ch_free( monitor_subsys );
+       }
+       
+       ldap_pvt_thread_mutex_destroy( &monitor_info.mi_cache_mutex );
+
+       be->be_private = NULL;
+
        return 0;
 }