]> git.sur5r.net Git - openldap/blobdiff - servers/slapd/back-bdb/modify.c
misc addition to the previous glueing commit
[openldap] / servers / slapd / back-bdb / modify.c
index 3d9e86dcebcfbd9050bf23c78fc02b31faed0f5b..bc3e7ab48c63be92d058e35ed55befa808f96d4d 100644 (file)
@@ -1,8 +1,17 @@
 /* modify.c - bdb backend modify routine */
 /* $OpenLDAP$ */
-/*
- * Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
- * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2000-2004 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
  */
 
 #include "portable.h"
 #include "back-bdb.h"
 #include "external.h"
 
+static struct berval scbva[] = {
+       BER_BVC("glue"),
+       BER_BVNULL
+};
+
 int bdb_modify_internal(
-       BackendDB *be,
-       Connection *conn,
        Operation *op,
        DB_TXN *tid,
        Modifications *modlist,
@@ -30,6 +42,7 @@ int bdb_modify_internal(
        Modifications   *ml;
        Attribute       *save_attrs;
        Attribute       *ap;
+       int                     glue_attr_delete = 0;
 
 #ifdef NEW_LOGGING
        LDAP_LOG ( OPERATION, ENTRY, "bdb_modify_internal: 0x%08lx: %s\n", 
@@ -39,13 +52,46 @@ int bdb_modify_internal(
                e->e_id, e->e_dn, 0);
 #endif
 
-       if ( !acl_check_modlist( be, conn, op, e, modlist )) {
+       if ( !acl_check_modlist( op, e, modlist )) {
                return LDAP_INSUFFICIENT_ACCESS;
        }
 
+       /* save_attrs will be disposed of by bdb_cache_modify */
        save_attrs = e->e_attrs;
        e->e_attrs = attrs_dup( e->e_attrs );
 
+       for ( ml = modlist; ml != NULL; ml = ml->sml_next ) {
+               int match;
+               mod = &ml->sml_mod;
+               switch( mod->sm_op ) {
+               case LDAP_MOD_ADD:
+               case LDAP_MOD_REPLACE:
+                       if ( mod->sm_desc == slap_schema.si_ad_structuralObjectClass ) {
+                               value_match( &match, slap_schema.si_ad_structuralObjectClass,
+                               slap_schema.si_ad_structuralObjectClass->ad_type->sat_equality,
+                               SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
+                               &mod->sm_values[0], &scbva[0], text );
+                               if ( !match )
+                                       glue_attr_delete = 1;
+                       }
+               }
+               if ( glue_attr_delete )
+                       break;
+       }
+
+       if ( glue_attr_delete ) {
+               Attribute       **app = &e->e_attrs;
+               while ( *app != NULL ) {
+                       if ( !is_at_operational( (*app)->a_desc->ad_type )) {
+                               Attribute *save = *app;
+                               *app = (*app)->a_next;
+                               attr_free( save );
+                               continue;
+                       }
+                       app = &(*app)->a_next;
+               }
+       }
+
        for ( ml = modlist; ml != NULL; ml = ml->sml_next ) {
                mod = &ml->sml_mod;
 
@@ -56,7 +102,7 @@ int bdb_modify_internal(
 #else
                        Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: add\n", 0, 0, 0);
 #endif
-                       err = modify_add_values( e, mod, get_permitmodify(op),
+                       err = modify_add_values( e, mod, get_permissiveModify(op),
                                text, textbuf, textlen );
                        if( err != LDAP_SUCCESS ) {
 #ifdef NEW_LOGGING
@@ -70,13 +116,15 @@ int bdb_modify_internal(
                        break;
 
                case LDAP_MOD_DELETE:
+                       if ( glue_attr_delete )
+                               break;
 #ifdef NEW_LOGGING
                        LDAP_LOG ( OPERATION, DETAIL1, 
                                "bdb_modify_internal: delete\n", 0, 0, 0 );
 #else
                        Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: delete\n", 0, 0, 0);
 #endif
-                       err = modify_delete_values( e, mod, get_permitmodify(op),
+                       err = modify_delete_values( e, mod, get_permissiveModify(op),
                                text, textbuf, textlen );
                        assert( err != LDAP_TYPE_OR_VALUE_EXISTS );
                        if( err != LDAP_SUCCESS ) {
@@ -97,7 +145,7 @@ int bdb_modify_internal(
 #else
                        Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: replace\n", 0, 0, 0);
 #endif
-                       err = modify_replace_values( e, mod, get_permitmodify(op),
+                       err = modify_replace_values( e, mod, get_permissiveModify(op),
                                text, textbuf, textlen );
                        if( err != LDAP_SUCCESS ) {
 #ifdef NEW_LOGGING
@@ -110,6 +158,28 @@ int bdb_modify_internal(
                        }
                        break;
 
+               case LDAP_MOD_INCREMENT:
+#ifdef NEW_LOGGING
+                       LDAP_LOG ( OPERATION, DETAIL1, 
+                               "bdb_modify_internal: increment\n", 0, 0, 0 );
+#else
+                       Debug(LDAP_DEBUG_ARGS,
+                               "bdb_modify_internal: increment\n", 0, 0, 0);
+#endif
+                       err = modify_increment_values( e, mod, get_permissiveModify(op),
+                               text, textbuf, textlen );
+                       if( err != LDAP_SUCCESS ) {
+#ifdef NEW_LOGGING
+                               LDAP_LOG ( OPERATION, ERR, 
+                                       "bdb_modify_internal: %d %s\n", err, *text, 0 );
+#else
+                               Debug(LDAP_DEBUG_ARGS,
+                                       "bdb_modify_internal: %d %s\n",
+                                       err, *text, 0);
+#endif
+                       }
+                       break;
+
                case SLAP_MOD_SOFTADD:
 #ifdef NEW_LOGGING
                        LDAP_LOG ( OPERATION, DETAIL1, 
@@ -122,8 +192,11 @@ int bdb_modify_internal(
                         */
                        mod->sm_op = LDAP_MOD_ADD;
 
-                       err = modify_add_values( e, mod, get_permitmodify(op),
+                       err = modify_add_values( e, mod, get_permissiveModify(op),
                                text, textbuf, textlen );
+
+                       mod->sm_op = SLAP_MOD_SOFTADD;
+
                        if ( err == LDAP_TYPE_OR_VALUE_EXISTS ) {
                                err = LDAP_SUCCESS;
                        }
@@ -170,9 +243,13 @@ int bdb_modify_internal(
                        e->e_ocflags = 0;
                }
 
+               if ( glue_attr_delete ) {
+                       e->e_ocflags = 0;
+               }
+
                /* check if modified attribute was indexed
                 * but not in case of NOOP... */
-               err = bdb_index_is_indexed( be, mod->sm_desc );
+               err = bdb_index_is_indexed( op->o_bd, mod->sm_desc );
                if ( err == LDAP_SUCCESS && !op->o_noop ) {
                        ap = attr_find( save_attrs, mod->sm_desc );
                        if ( ap ) ap->a_flags |= SLAP_ATTR_IXDEL;
@@ -183,7 +260,7 @@ int bdb_modify_internal(
        }
 
        /* check that the entry still obeys the schema */
-       rc = entry_schema_check( be, e, save_attrs, text, textbuf, textlen );
+       rc = entry_schema_check( op->o_bd, e, save_attrs, text, textbuf, textlen );
        if ( rc != LDAP_SUCCESS || op->o_noop ) {
                attrs_free( e->e_attrs );
                e->e_attrs = save_attrs;
@@ -209,8 +286,9 @@ int bdb_modify_internal(
        /* start with deleting the old index entries */
        for ( ap = save_attrs; ap != NULL; ap = ap->a_next ) {
                if ( ap->a_flags & SLAP_ATTR_IXDEL ) {
-                       rc = bdb_index_values( be, tid, ap->a_desc, ap->a_vals,
-                                              e->e_id, SLAP_INDEX_DELETE_OP );
+                       rc = bdb_index_values( op, tid, ap->a_desc,
+                               ap->a_nvals,
+                               e->e_id, SLAP_INDEX_DELETE_OP );
                        if ( rc != LDAP_SUCCESS ) {
                                attrs_free( e->e_attrs );
                                e->e_attrs = save_attrs;
@@ -232,8 +310,9 @@ int bdb_modify_internal(
        /* add the new index entries */
        for ( ap = e->e_attrs; ap != NULL; ap = ap->a_next ) {
                if (ap->a_flags & SLAP_ATTR_IXADD) {
-                       rc = bdb_index_values( be, tid, ap->a_desc, ap->a_vals,
-                                              e->e_id, SLAP_INDEX_ADD_OP );
+                       rc = bdb_index_values( op, tid, ap->a_desc,
+                               ap->a_nvals,
+                               e->e_id, SLAP_INDEX_ADD_OP );
                        if ( rc != LDAP_SUCCESS ) {
                                attrs_free( e->e_attrs );
                                e->e_attrs = save_attrs;
@@ -257,47 +336,44 @@ int bdb_modify_internal(
 
 
 int
-bdb_modify(
-       BackendDB       *be,
-       Connection      *conn,
-       Operation       *op,
-       struct berval   *dn,
-       struct berval   *ndn,
-       Modifications   *modlist )
+bdb_modify( Operation *op, SlapReply *rs )
 {
-       struct bdb_info *bdb = (struct bdb_info *) be->be_private;
-       int rc;
-       Entry           *matched = NULL;
+       struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
        Entry           *e = NULL;
+       EntryInfo       *ei = NULL;
        int             manageDSAit = get_manageDSAit( op );
-       const char *text = NULL;
        char textbuf[SLAP_TEXT_BUFLEN];
        size_t textlen = sizeof textbuf;
-       DB_TXN  *ltid = NULL;
+       DB_TXN  *ltid = NULL, *lt2;
        struct bdb_op_info opinfo;
+       Entry           dummy;
 
        u_int32_t       locker = 0;
        DB_LOCK         lock;
 
-       int             noop = 0;
+       int             num_retries = 0;
+
+       LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS];
+       int num_ctrls = 0;
 
-#if defined(LDAP_CLIENT_UPDATE) || defined(LDAP_SYNC)
        Operation* ps_list;
-       struct psid_entry* pm_list;
-       struct psid_entry* pm_prev;
-#endif
+       struct psid_entry *pm_list, *pm_prev;
+       int rc;
+       EntryInfo       *suffix_ei;
+       Entry           *ctxcsn_e;
+       int                     ctxcsn_added = 0;
 
 #ifdef NEW_LOGGING
-       LDAP_LOG ( OPERATION, ENTRY, "bdb_modify: %s\n", dn->bv_val, 0, 0 );
+       LDAP_LOG ( OPERATION, ENTRY, "bdb_modify: %s\n", op->o_req_dn.bv_val, 0, 0 );
 #else
-       Debug( LDAP_DEBUG_ARGS, "bdb_modify: %s\n", dn->bv_val, 0, 0 );
+       Debug( LDAP_DEBUG_ARGS, "bdb_modify: %s\n", op->o_req_dn.bv_val, 0, 0 );
 #endif
 
        if( 0 ) {
 retry: /* transaction retry */
                if( e != NULL ) {
-                       bdb_cache_delete_entry(&bdb->bi_cache, e);
                        bdb_unlocked_cache_return_entry_w(&bdb->bi_cache, e);
+                       e = NULL;
                }
 #ifdef NEW_LOGGING
                LDAP_LOG ( OPERATION, DETAIL1, "bdb_modify: retrying...\n", 0, 0, 0 );
@@ -306,112 +382,127 @@ retry:  /* transaction retry */
                        "bdb_modify: retrying...\n", 0, 0, 0);
 #endif
 
-#if defined(LDAP_CLIENT_UPDATE) || defined(LDAP_SYNC)
-               pm_list = LDAP_LIST_FIRST(&op->premodify_list);
+               pm_list = LDAP_LIST_FIRST(&op->o_pm_list);
                while ( pm_list != NULL ) {
-                       LDAP_LIST_REMOVE ( pm_list, link );
+                       LDAP_LIST_REMOVE ( pm_list, ps_link );
                        pm_prev = pm_list;
-                       pm_list = LDAP_LIST_NEXT ( pm_list, link );
-                       free (pm_prev);
+                       pm_list = LDAP_LIST_NEXT ( pm_list, ps_link );
+                       ch_free( pm_prev );
                }
-#endif
 
-               rc = TXN_ABORT( ltid );
+               rs->sr_err = TXN_ABORT( ltid );
                ltid = NULL;
                op->o_private = NULL;
-               if( rc != 0 ) {
-                       rc = LDAP_OTHER;
-                       text = "internal error";
+               op->o_do_not_cache = opinfo.boi_acl_cache;
+               if( rs->sr_err != 0 ) {
+                       rs->sr_err = LDAP_OTHER;
+                       rs->sr_text = "internal error";
                        goto return_results;
                }
                ldap_pvt_thread_yield();
+               bdb_trans_backoff( ++num_retries );
        }
 
        /* begin transaction */
-       rc = TXN_BEGIN( bdb->bi_dbenv, NULL, &ltid, 
+       rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, NULL, &ltid, 
                bdb->bi_db_opflags );
-       text = NULL;
-       if( rc != 0 ) {
+       rs->sr_text = NULL;
+       if( rs->sr_err != 0 ) {
 #ifdef NEW_LOGGING
                LDAP_LOG ( OPERATION, DETAIL1, 
-                       "bdb_modify: txn_begin failed: %s (%d)\n", db_strerror(rc), rc, 0 );
+                       "bdb_modify: txn_begin failed: %s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
 #else
                Debug( LDAP_DEBUG_TRACE,
                        "bdb_modify: txn_begin failed: %s (%d)\n",
-                       db_strerror(rc), rc, 0 );
+                       db_strerror(rs->sr_err), rs->sr_err, 0 );
 #endif
-               rc = LDAP_OTHER;
-               text = "internal error";
+               rs->sr_err = LDAP_OTHER;
+               rs->sr_text = "internal error";
                goto return_results;
        }
 
        locker = TXN_ID ( ltid );
 
-       opinfo.boi_bdb = be;
+       opinfo.boi_bdb = op->o_bd;
        opinfo.boi_txn = ltid;
        opinfo.boi_locker = locker;
        opinfo.boi_err = 0;
+       opinfo.boi_acl_cache = op->o_do_not_cache;
        op->o_private = &opinfo;
 
-       /* get entry */
-       rc = bdb_dn2entry_w( be, ltid, ndn, &e, &matched, 0, locker, &lock );
+       /* get entry or ancestor */
+       rs->sr_err = bdb_dn2entry( op, ltid, &op->o_req_ndn, &ei, 1,
+               locker, &lock );
 
-       if ( rc != 0 ) {
+       if ( rs->sr_err != 0 ) {
 #ifdef NEW_LOGGING
                LDAP_LOG ( OPERATION, DETAIL1, 
-                       "bdb_modify: dn2entry failed: (%d)\n", rc, 0, 0 );
+                       "bdb_modify: dn2entry failed: (%d)\n", rs->sr_err, 0, 0 );
 #else
                Debug( LDAP_DEBUG_TRACE,
                        "bdb_modify: dn2entry failed (%d)\n",
-                       rc, 0, 0 );
+                       rs->sr_err, 0, 0 );
 #endif
-               switch( rc ) {
+               switch( rs->sr_err ) {
                case DB_LOCK_DEADLOCK:
                case DB_LOCK_NOTGRANTED:
                        goto retry;
                case DB_NOTFOUND:
                        break;
                case LDAP_BUSY:
-                       text = "ldap server busy";
+                       rs->sr_text = "ldap server busy";
                        goto return_results;
                default:
-                       rc = LDAP_OTHER;
+                       rs->sr_err = LDAP_OTHER;
+                       rs->sr_text = "internal error";
+                       goto return_results;
                }
-               text = "internal error";
-               goto return_results;
        }
 
+       e = ei->bei_e;
        /* acquire and lock entry */
-       if ( e == NULL ) {
-               char* matched_dn = NULL;
-               BerVarray refs;
-
-               if ( matched != NULL ) {
-                       matched_dn = ch_strdup( matched->e_dn );
-                       refs = is_entry_referral( matched )
-                               ? get_entry_referrals( be, conn, op, matched )
+       /* FIXME: dn2entry() should return non-glue entry */
+       if (( rs->sr_err == DB_NOTFOUND ) || ( !manageDSAit && e && is_entry_glue( e ))) {
+               if ( e != NULL ) {
+                       rs->sr_matched = ch_strdup( e->e_dn );
+                       rs->sr_ref = is_entry_referral( e )
+                               ? get_entry_referrals( op, e )
                                : NULL;
-                       bdb_unlocked_cache_return_entry_r (&bdb->bi_cache, matched);
-                       matched = NULL;
+                       bdb_unlocked_cache_return_entry_r (&bdb->bi_cache, e);
+                       e = NULL;
 
                } else {
-                       refs = referral_rewrite( default_referral,
-                               NULL, dn, LDAP_SCOPE_DEFAULT );
+                       BerVarray deref = NULL;
+                       if ( !LDAP_STAILQ_EMPTY( &op->o_bd->be_syncinfo )) {
+                               syncinfo_t *si;
+                               LDAP_STAILQ_FOREACH( si, &op->o_bd->be_syncinfo, si_next ) {
+                                       struct berval tmpbv;
+                                       ber_dupbv( &tmpbv, &si->si_provideruri_bv[0] );
+                                       ber_bvarray_add( &deref, &tmpbv );
+                }
+                       } else {
+                               deref = default_referral;
+                       }
+                       rs->sr_ref = referral_rewrite( deref, NULL, &op->o_req_dn,
+                               LDAP_SCOPE_DEFAULT );
                }
 
-               send_ldap_result( conn, op, rc = LDAP_REFERRAL,
-                       matched_dn, NULL, refs, NULL );
+               rs->sr_err = LDAP_REFERRAL;
+               send_ldap_result( op, rs );
 
-               ber_bvarray_free( refs );
-               free( matched_dn );
+               if ( rs->sr_ref != default_referral ) {
+                       ber_bvarray_free( rs->sr_ref );
+               }
+               free( (char *)rs->sr_matched );
+               rs->sr_ref = NULL;
+               rs->sr_matched = NULL;
 
                goto done;
        }
 
        if ( !manageDSAit && is_entry_referral( e ) ) {
                /* entry is a referral, don't allow modify */
-               BerVarray refs = get_entry_referrals( be,
-                       conn, op, e );
+               rs->sr_ref = get_entry_referrals( op, e );
 
 #ifdef NEW_LOGGING
                LDAP_LOG ( OPERATION, DETAIL1, "bdb_modify: entry is referral\n", 0, 0, 0 );
@@ -421,35 +512,83 @@ retry:    /* transaction retry */
                        0, 0, 0 );
 #endif
 
-               send_ldap_result( conn, op, rc = LDAP_REFERRAL,
-                       e->e_dn, NULL, refs, NULL );
+               rs->sr_err = LDAP_REFERRAL;
+               rs->sr_matched = e->e_name.bv_val;
+               send_ldap_result( op, rs );
 
-               ber_bvarray_free( refs );
+               ber_bvarray_free( rs->sr_ref );
+               rs->sr_ref = NULL;
+               rs->sr_matched = NULL;
                goto done;
        }
 
-#if defined(LDAP_CLIENT_UPDATE) || defined(LDAP_SYNC)
-       if ( rc == LDAP_SUCCESS && !op->o_noop ) {
-               LDAP_LIST_FOREACH ( ps_list, &bdb->psearch_list, link ) {
-                       bdb_psearch(be, conn, op, ps_list, e, LDAP_PSEARCH_BY_PREMODIFY );
+       if ( get_assert( op ) &&
+               ( test_filter( op, e, get_assertion( op )) != LDAP_COMPARE_TRUE ))
+       {
+               rs->sr_err = LDAP_ASSERTION_FAILED;
+               goto return_results;
+       }
+
+       if ( rs->sr_err == LDAP_SUCCESS && !op->o_noop && !op->o_no_psearch ) {
+               ldap_pvt_thread_rdwr_rlock( &bdb->bi_pslist_rwlock );
+               LDAP_LIST_FOREACH ( ps_list, &bdb->bi_psearch_list, o_ps_link ) {
+                       bdb_psearch(op, rs, ps_list, e, LDAP_PSEARCH_BY_PREMODIFY );
                }
+               ldap_pvt_thread_rdwr_runlock( &bdb->bi_pslist_rwlock );
        }
+
+       if( op->o_preread ) {
+               if ( slap_read_controls( op, rs, e,
+                       &slap_pre_read_bv, &ctrls[num_ctrls] ) )
+               {
+#ifdef NEW_LOGGING
+                       LDAP_LOG ( OPERATION, DETAIL1,
+                               "<=- bdb_modify: pre-read failed!\n", 0, 0, 0 );
+#else
+                       Debug( LDAP_DEBUG_TRACE,
+                               "<=- bdb_modify: pre-read failed!\n", 0, 0, 0 );
 #endif
-       
+                       goto return_results;
+               }
+               ctrls[++num_ctrls] = NULL;
+               op->o_preread = 0; /* prevent redo on retry */
+       }
+
+       /* nested transaction */
+       rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, ltid, &lt2, 
+               bdb->bi_db_opflags );
+       rs->sr_text = NULL;
+       if( rs->sr_err != 0 ) {
+#ifdef NEW_LOGGING
+               LDAP_LOG ( OPERATION, ERR, 
+                       "bdb_modify: txn_begin(2) failed: %s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
+#else
+               Debug( LDAP_DEBUG_TRACE,
+                       "bdb_modify: txn_begin(2) failed: %s (%d)\n",
+                       db_strerror(rs->sr_err), rs->sr_err, 0 );
+#endif
+               rs->sr_err = LDAP_OTHER;
+               rs->sr_text = "internal error";
+               goto return_results;
+       }
        /* Modify the entry */
-       rc = bdb_modify_internal( be, conn, op, ltid, modlist, e,
-               &text, textbuf, textlen );
+       dummy = *e;
+       rs->sr_err = bdb_modify_internal( op, lt2, op->oq_modify.rs_modlist,
+               &dummy, &rs->sr_text, textbuf, textlen );
 
-       if( rc != LDAP_SUCCESS ) {
+       if( rs->sr_err != LDAP_SUCCESS ) {
 #ifdef NEW_LOGGING
                LDAP_LOG ( OPERATION, ERR, 
-                       "bdb_modify: modify failed (%d)\n", rc, 0, 0 );
+                       "bdb_modify: modify failed (%d)\n", rs->sr_err, 0, 0 );
 #else
                Debug( LDAP_DEBUG_TRACE,
                        "bdb_modify: modify failed (%d)\n",
-                       rc, 0, 0 );
+                       rs->sr_err, 0, 0 );
 #endif
-               switch( rc ) {
+               if ( (rs->sr_err == LDAP_INSUFFICIENT_ACCESS) && opinfo.boi_err ) {
+                       rs->sr_err = opinfo.boi_err;
+               }
+               switch( rs->sr_err ) {
                case DB_LOCK_DEADLOCK:
                case DB_LOCK_NOTGRANTED:
                        goto retry;
@@ -457,91 +596,138 @@ retry:   /* transaction retry */
                goto return_results;
        }
 
+       if( op->o_postread ) {
+               if( slap_read_controls( op, rs, e,
+                       &slap_post_read_bv, &ctrls[num_ctrls] ) )
+               {
+#ifdef NEW_LOGGING
+                       LDAP_LOG ( OPERATION, DETAIL1,
+                               "<=- bdb_modify: post-read failed!\n", 0, 0, 0 );
+#else
+                       Debug( LDAP_DEBUG_TRACE,
+                               "<=- bdb_modify: post-read failed!\n", 0, 0, 0 );
+#endif
+                       goto return_results;
+               }
+               ctrls[++num_ctrls] = NULL;
+               op->o_postread = 0;  /* prevent redo on retry */
+               /* FIXME: should read entry on the last retry */
+       }
+
        /* change the entry itself */
-       rc = bdb_id2entry_update( be, ltid, e );
-       if ( rc != 0 ) {
+       rs->sr_err = bdb_id2entry_update( op->o_bd, lt2, &dummy );
+       if ( rs->sr_err != 0 ) {
 #ifdef NEW_LOGGING
                LDAP_LOG ( OPERATION, ERR, 
-                       "bdb_modify: id2entry update failed (%d)\n", rc, 0, 0 );
+                       "bdb_modify: id2entry update failed (%d)\n", rs->sr_err, 0, 0 );
 #else
                Debug( LDAP_DEBUG_TRACE,
                        "bdb_modify: id2entry update failed (%d)\n",
-                       rc, 0, 0 );
+                       rs->sr_err, 0, 0 );
 #endif
-               switch( rc ) {
+               switch( rs->sr_err ) {
                case DB_LOCK_DEADLOCK:
                case DB_LOCK_NOTGRANTED:
                        goto retry;
                }
-               text = "entry update failed";
+               rs->sr_text = "entry update failed";
+               goto return_results;
+       }
+
+       if ( TXN_COMMIT( lt2, 0 ) != 0 ) {
+               rs->sr_err = LDAP_OTHER;
+               rs->sr_text = "txn_commit(2) failed";
                goto return_results;
        }
 
+       if ( LDAP_STAILQ_EMPTY( &op->o_bd->be_syncinfo )) {
+               rc = bdb_csn_commit( op, rs, ltid, ei, &suffix_ei,
+                       &ctxcsn_e, &ctxcsn_added, locker );
+               switch ( rc ) {
+               case BDB_CSN_ABORT :
+                       goto return_results;
+               case BDB_CSN_RETRY :
+                       goto retry;
+               }
+       }
+
        if( op->o_noop ) {
-               if ( ( rc = TXN_ABORT( ltid ) ) != 0 ) {
-                       text = "txn_abort (no-op) failed";
+               if ( ( rs->sr_err = TXN_ABORT( ltid ) ) != 0 ) {
+                       rs->sr_text = "txn_abort (no-op) failed";
                } else {
-                       noop = 1;
-                       rc = LDAP_SUCCESS;
+                       rs->sr_err = LDAP_NO_OPERATION;
+                       goto return_results;
                }
        } else {
-               rc = TXN_COMMIT( ltid, 0 );
+               bdb_cache_modify( e, dummy.e_attrs, bdb->bi_dbenv, locker, &lock );
+
+               if ( LDAP_STAILQ_EMPTY( &op->o_bd->be_syncinfo )) {
+                       if ( ctxcsn_added ) {
+                               bdb_cache_add( bdb, suffix_ei, ctxcsn_e,
+                                       (struct berval *)&slap_ldapsync_cn_bv, locker );
+                       }
+               }
+
+               if ( rs->sr_err == LDAP_SUCCESS ) {
+                       /* Loop through in-scope entries for each psearch spec */
+                       ldap_pvt_thread_rdwr_rlock( &bdb->bi_pslist_rwlock );
+                       LDAP_LIST_FOREACH ( ps_list, &bdb->bi_psearch_list, o_ps_link ) {
+                               bdb_psearch( op, rs, ps_list, e, LDAP_PSEARCH_BY_MODIFY );
+                       }
+                       ldap_pvt_thread_rdwr_runlock( &bdb->bi_pslist_rwlock );
+                       pm_list = LDAP_LIST_FIRST(&op->o_pm_list);
+                       while ( pm_list != NULL ) {
+                               bdb_psearch(op, rs, pm_list->ps_op,
+                                                       e, LDAP_PSEARCH_BY_SCOPEOUT);
+                               LDAP_LIST_REMOVE ( pm_list, ps_link );
+                               pm_prev = pm_list;
+                               pm_list = LDAP_LIST_NEXT ( pm_list, ps_link );
+                               ch_free( pm_prev );
+                       }
+               }
+
+               rs->sr_err = TXN_COMMIT( ltid, 0 );
        }
        ltid = NULL;
        op->o_private = NULL;
 
-       if( rc != 0 ) {
+       if( rs->sr_err != 0 ) {
 #ifdef NEW_LOGGING
                LDAP_LOG ( OPERATION, ERR, 
                        "bdb_modify: txn_%s failed %s (%d)\n", 
-                       op->o_noop ? "abort (no_op)" : "commit", db_strerror(rc), rc );
+                       op->o_noop ? "abort (no_op)" : "commit",
+                       db_strerror(rs->sr_err), rs->sr_err );
 #else
                Debug( LDAP_DEBUG_TRACE,
                        "bdb_modify: txn_%s failed: %s (%d)\n",
                        op->o_noop ? "abort (no-op)" : "commit",
-                       db_strerror(rc), rc );
+                       db_strerror(rs->sr_err), rs->sr_err );
 #endif
-               rc = LDAP_OTHER;
-               text = "commit failed";
+               rs->sr_err = LDAP_OTHER;
+               rs->sr_text = "commit failed";
+
+               goto return_results;
+       }
 
-       } else {
 #ifdef NEW_LOGGING
-               LDAP_LOG ( OPERATION, DETAIL1, 
-                       "bdb_modify: updated%s id=%08lx dn=\"%s\"\n", 
-                       op->o_noop ? " (no_op)" : "", e->e_id, e->e_dn );
+       LDAP_LOG ( OPERATION, DETAIL1, 
+               "bdb_modify: updated%s id=%08lx dn=\"%s\"\n", 
+               op->o_noop ? " (no_op)" : "", e->e_id, e->e_dn );
 #else
-               Debug( LDAP_DEBUG_TRACE,
-                       "bdb_modify: updated%s id=%08lx dn=\"%s\"\n",
-                       op->o_noop ? " (no-op)" : "",
-                       e->e_id, e->e_dn );
+       Debug( LDAP_DEBUG_TRACE,
+               "bdb_modify: updated%s id=%08lx dn=\"%s\"\n",
+               op->o_noop ? " (no-op)" : "",
+               e->e_id, e->e_dn );
 #endif
-               rc = LDAP_SUCCESS;
-               text = NULL;
-       }
+
+       rs->sr_err = LDAP_SUCCESS;
+       rs->sr_text = NULL;
+       if( num_ctrls ) rs->sr_ctrls = ctrls;
 
 return_results:
-       send_ldap_result( conn, op, rc,
-               NULL, text, NULL, NULL );
-
-#if defined(LDAP_CLIENT_UPDATE) || defined(LDAP_SYNC)
-       if ( rc == LDAP_SUCCESS && !op->o_noop ) {
-               /* Loop through in-scope entries for each psearch spec */
-               LDAP_LIST_FOREACH ( ps_list, &bdb->psearch_list, link ) {
-                       bdb_psearch( be, conn, op, ps_list, e, LDAP_PSEARCH_BY_MODIFY );
-               }
-               pm_list = LDAP_LIST_FIRST(&op->premodify_list);
-               while ( pm_list != NULL ) {
-                       bdb_psearch(be, conn, op, pm_list->ps->op,
-                                               e, LDAP_PSEARCH_BY_SCOPEOUT);
-                       LDAP_LIST_REMOVE ( pm_list, link );
-                       pm_prev = pm_list;
-                       pm_list = LDAP_LIST_NEXT ( pm_list, link );
-                       free (pm_prev);
-               }
-       }
-#endif
+       send_ldap_result( op, rs );
 
-       if( rc == LDAP_SUCCESS && bdb->bi_txn_cp ) {
+       if( rs->sr_err == LDAP_SUCCESS && bdb->bi_txn_cp ) {
                ldap_pvt_thread_yield();
                TXN_CHECKPOINT( bdb->bi_dbenv,
                        bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
@@ -549,15 +735,13 @@ return_results:
 
 done:
        if( ltid != NULL ) {
-#if defined(LDAP_CLIENT_UPDATE) || defined(LDAP_SYNC)
-               pm_list = LDAP_LIST_FIRST(&op->premodify_list);
+               pm_list = LDAP_LIST_FIRST(&op->o_pm_list);
                while ( pm_list != NULL ) {
-                       LDAP_LIST_REMOVE ( pm_list, link );
+                       LDAP_LIST_REMOVE ( pm_list, ps_link );
                        pm_prev = pm_list;
-                       pm_list = LDAP_LIST_NEXT ( pm_list, link );
-                       free (pm_prev);
+                       pm_list = LDAP_LIST_NEXT ( pm_list, ps_link );
+                       ch_free( pm_prev );
                }
-#endif
                TXN_ABORT( ltid );
                op->o_private = NULL;
        }
@@ -565,5 +749,5 @@ done:
        if( e != NULL ) {
                bdb_unlocked_cache_return_entry_w (&bdb->bi_cache, e);
        }
-       return ( ( rc == LDAP_SUCCESS ) ? noop : rc );
+       return rs->sr_err;
 }