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openldap  2.4.31
Functions
modrdn.c File Reference
#include "portable.h"
#include <stdio.h>
#include <ac/string.h>
#include "back-bdb.h"

Go to the source code of this file.

Functions

int bdb_modrdn (Operation *op, SlapReply *rs)

Function Documentation

int bdb_modrdn ( Operation op,
SlapReply rs 
)

Definition at line 25 of file modrdn.c.

{
       struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private;
       AttributeDescription *children = slap_schema.si_ad_children;
       AttributeDescription *entry = slap_schema.si_ad_entry;
       struct berval p_dn, p_ndn;
       struct berval new_dn = {0, NULL}, new_ndn = {0, NULL};
       Entry         *e = NULL;
       Entry         *p = NULL;
       EntryInfo     *ei = NULL, *eip = NULL, *nei = NULL, *neip = NULL;
       /* LDAP v2 supporting correct attribute handling. */
       char textbuf[SLAP_TEXT_BUFLEN];
       size_t textlen = sizeof textbuf;
       DB_TXN        *ltid = NULL, *lt2;
       struct bdb_op_info opinfo = {{{ 0 }}};
       Entry dummy = {0};

       Entry         *np = NULL;                 /* newSuperior Entry */
       struct berval *np_dn = NULL;                     /* newSuperior dn */
       struct berval *np_ndn = NULL;                    /* newSuperior ndn */
       struct berval *new_parent_dn = NULL;      /* np_dn, p_dn, or NULL */

       int           manageDSAit = get_manageDSAit( op );

       DB_LOCK              lock, plock, nplock;

       int           num_retries = 0;

       LDAPControl **preread_ctrl = NULL;
       LDAPControl **postread_ctrl = NULL;
       LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS];
       int num_ctrls = 0;

       int    rc;

       int parent_is_glue = 0;
       int parent_is_leaf = 0;

#ifdef LDAP_X_TXN
       int settle = 0;
#endif

       Debug( LDAP_DEBUG_TRACE, "==>" LDAP_XSTRING(bdb_modrdn) "(%s,%s,%s)\n",
              op->o_req_dn.bv_val,op->oq_modrdn.rs_newrdn.bv_val,
              op->oq_modrdn.rs_newSup ? op->oq_modrdn.rs_newSup->bv_val : "NULL" );

#ifdef LDAP_X_TXN
       if( op->o_txnSpec ) {
              /* acquire connection lock */
              ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
              if( op->o_conn->c_txn == CONN_TXN_INACTIVE ) {
                     rs->sr_text = "invalid transaction identifier";
                     rs->sr_err = LDAP_X_TXN_ID_INVALID;
                     goto txnReturn;
              } else if( op->o_conn->c_txn == CONN_TXN_SETTLE ) {
                     settle=1;
                     goto txnReturn;
              }

              if( op->o_conn->c_txn_backend == NULL ) {
                     op->o_conn->c_txn_backend = op->o_bd;

              } else if( op->o_conn->c_txn_backend != op->o_bd ) {
                     rs->sr_text = "transaction cannot span multiple database contexts";
                     rs->sr_err = LDAP_AFFECTS_MULTIPLE_DSAS;
                     goto txnReturn;
              }

              /* insert operation into transaction */

              rs->sr_text = "transaction specified";
              rs->sr_err = LDAP_X_TXN_SPECIFY_OKAY;

txnReturn:
              /* release connection lock */
              ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );

              if( !settle ) {
                     send_ldap_result( op, rs );
                     return rs->sr_err;
              }
       }
#endif

       ctrls[num_ctrls] = NULL;

       slap_mods_opattrs( op, &op->orr_modlist, 1 );

       if( 0 ) {
retry: /* transaction retry */
              if ( dummy.e_attrs ) {
                     attrs_free( dummy.e_attrs );
                     dummy.e_attrs = NULL;
              }
              if (e != NULL) {
                     bdb_unlocked_cache_return_entry_w(&bdb->bi_cache, e);
                     e = NULL;
              }
              if (p != NULL) {
                     bdb_unlocked_cache_return_entry_r(&bdb->bi_cache, p);
                     p = NULL;
              }
              if (np != NULL) {
                     bdb_unlocked_cache_return_entry_r(&bdb->bi_cache, np);
                     np = NULL;
              }
              Debug( LDAP_DEBUG_TRACE, "==>" LDAP_XSTRING(bdb_modrdn)
                            ": retrying...\n", 0, 0, 0 );

              rs->sr_err = TXN_ABORT( ltid );
              ltid = NULL;
              LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
              opinfo.boi_oe.oe_key = NULL;
              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;
              }
              if ( op->o_abandon ) {
                     rs->sr_err = SLAPD_ABANDON;
                     goto return_results;
              }
              parent_is_glue = 0;
              parent_is_leaf = 0;
              bdb_trans_backoff( ++num_retries );
       }

       /* begin transaction */
       rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, NULL, &ltid, 
              bdb->bi_db_opflags );
       rs->sr_text = NULL;
       if( rs->sr_err != 0 ) {
              Debug( LDAP_DEBUG_TRACE,
                     LDAP_XSTRING(bdb_modrdn) ": txn_begin failed: "
                     "%s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 );
              rs->sr_err = LDAP_OTHER;
              rs->sr_text = "internal error";
              goto return_results;
       }

       opinfo.boi_oe.oe_key = bdb;
       opinfo.boi_txn = ltid;
       opinfo.boi_err = 0;
       opinfo.boi_acl_cache = op->o_do_not_cache;
       LDAP_SLIST_INSERT_HEAD( &op->o_extra, &opinfo.boi_oe, oe_next );

       /* get entry */
       rs->sr_err = bdb_dn2entry( op, ltid, &op->o_req_ndn, &ei, 1,
              &lock );

       switch( rs->sr_err ) {
       case 0:
       case DB_NOTFOUND:
              break;
       case DB_LOCK_DEADLOCK:
       case DB_LOCK_NOTGRANTED:
              goto retry;
       case LDAP_BUSY:
              rs->sr_text = "ldap server busy";
              goto return_results;
       default:
              rs->sr_err = LDAP_OTHER;
              rs->sr_text = "internal error";
              goto return_results;
       }

       e = ei->bei_e;
       /* 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, e);
                     e = NULL;

              } else {
                     rs->sr_ref = referral_rewrite( default_referral, NULL,
                                   &op->o_req_dn, LDAP_SCOPE_DEFAULT );
              }

              rs->sr_err = LDAP_REFERRAL;
              send_ldap_result( op, rs );

              ber_bvarray_free( rs->sr_ref );
              free( (char *)rs->sr_matched );
              rs->sr_ref = NULL;
              rs->sr_matched = NULL;

              goto done;
       }

       if ( get_assert( op ) &&
              ( test_filter( op, e, get_assertion( op )) != LDAP_COMPARE_TRUE ))
       {
              rs->sr_err = LDAP_ASSERTION_FAILED;
              goto return_results;
       }

       /* check write on old entry */
       rs->sr_err = access_allowed( op, e, entry, NULL, ACL_WRITE, NULL );
       if ( ! rs->sr_err ) {
              switch( opinfo.boi_err ) {
              case DB_LOCK_DEADLOCK:
              case DB_LOCK_NOTGRANTED:
                     goto retry;
              }

              Debug( LDAP_DEBUG_TRACE, "no access to entry\n", 0,
                     0, 0 );
              rs->sr_text = "no write access to old entry";
              rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
              goto return_results;
       }

#ifndef BDB_HIER
       rs->sr_err = bdb_cache_children( op, ltid, e );
       if ( rs->sr_err != DB_NOTFOUND ) {
              switch( rs->sr_err ) {
              case DB_LOCK_DEADLOCK:
              case DB_LOCK_NOTGRANTED:
                     goto retry;
              case 0:
                     Debug(LDAP_DEBUG_ARGS,
                            "<=- " LDAP_XSTRING(bdb_modrdn)
                            ": non-leaf %s\n",
                            op->o_req_dn.bv_val, 0, 0);
                     rs->sr_err = LDAP_NOT_ALLOWED_ON_NONLEAF;
                     rs->sr_text = "subtree rename not supported";
                     break;
              default:
                     Debug(LDAP_DEBUG_ARGS,
                            "<=- " LDAP_XSTRING(bdb_modrdn)
                            ": has_children failed: %s (%d)\n",
                            db_strerror(rs->sr_err), rs->sr_err, 0 );
                     rs->sr_err = LDAP_OTHER;
                     rs->sr_text = "internal error";
              }
              goto return_results;
       }
       ei->bei_state |= CACHE_ENTRY_NO_KIDS;
#endif

       if (!manageDSAit && is_entry_referral( e ) ) {
              /* parent is a referral, don't allow add */
              rs->sr_ref = get_entry_referrals( op, e );

              Debug( LDAP_DEBUG_TRACE, LDAP_XSTRING(bdb_modrdn)
                     ": entry %s is referral\n", e->e_dn, 0, 0 );

              rs->sr_err = LDAP_REFERRAL,
              rs->sr_matched = e->e_name.bv_val;
              send_ldap_result( op, rs );

              ber_bvarray_free( rs->sr_ref );
              rs->sr_ref = NULL;
              rs->sr_matched = NULL;
              goto done;
       }

       if ( be_issuffix( op->o_bd, &e->e_nname ) ) {
#ifdef BDB_MULTIPLE_SUFFIXES
              /* Allow renaming one suffix entry to another */
              p_ndn = slap_empty_bv;
#else
              /* There can only be one suffix entry */
              rs->sr_err = LDAP_NAMING_VIOLATION;
              rs->sr_text = "cannot rename suffix entry";
              goto return_results;
#endif
       } else {
              dnParent( &e->e_nname, &p_ndn );
       }
       np_ndn = &p_ndn;
       eip = ei->bei_parent;
       if ( eip && eip->bei_id ) {
              /* Make sure parent entry exist and we can write its 
               * children.
               */
              rs->sr_err = bdb_cache_find_id( op, ltid,
                     eip->bei_id, &eip, 0, &plock );

              switch( rs->sr_err ) {
              case 0:
              case DB_NOTFOUND:
                     break;
              case DB_LOCK_DEADLOCK:
              case DB_LOCK_NOTGRANTED:
                     goto retry;
              case LDAP_BUSY:
                     rs->sr_text = "ldap server busy";
                     goto return_results;
              default:
                     rs->sr_err = LDAP_OTHER;
                     rs->sr_text = "internal error";
                     goto return_results;
              }

              p = eip->bei_e;
              if( p == NULL) {
                     Debug( LDAP_DEBUG_TRACE, LDAP_XSTRING(bdb_modrdn)
                            ": parent does not exist\n", 0, 0, 0);
                     rs->sr_err = LDAP_OTHER;
                     rs->sr_text = "old entry's parent does not exist";
                     goto return_results;
              }
       } else {
              p = (Entry *)&slap_entry_root;
       }

       /* check parent for "children" acl */
       rs->sr_err = access_allowed( op, p,
              children, NULL,
              op->oq_modrdn.rs_newSup == NULL ?
                     ACL_WRITE : ACL_WDEL,
              NULL );

       if ( !p_ndn.bv_len )
              p = NULL;

       if ( ! rs->sr_err ) {
              switch( opinfo.boi_err ) {
              case DB_LOCK_DEADLOCK:
              case DB_LOCK_NOTGRANTED:
                     goto retry;
              }

              rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
              Debug( LDAP_DEBUG_TRACE, "no access to parent\n", 0,
                     0, 0 );
              rs->sr_text = "no write access to old parent's children";
              goto return_results;
       }

       Debug( LDAP_DEBUG_TRACE,
              LDAP_XSTRING(bdb_modrdn) ": wr to children "
              "of entry %s OK\n", p_ndn.bv_val, 0, 0 );
       
       if ( p_ndn.bv_val == slap_empty_bv.bv_val ) {
              p_dn = slap_empty_bv;
       } else {
              dnParent( &e->e_name, &p_dn );
       }

       Debug( LDAP_DEBUG_TRACE,
              LDAP_XSTRING(bdb_modrdn) ": parent dn=%s\n",
              p_dn.bv_val, 0, 0 );

       new_parent_dn = &p_dn;      /* New Parent unless newSuperior given */

       if ( op->oq_modrdn.rs_newSup != NULL ) {
              Debug( LDAP_DEBUG_TRACE, 
                     LDAP_XSTRING(bdb_modrdn)
                     ": new parent \"%s\" requested...\n",
                     op->oq_modrdn.rs_newSup->bv_val, 0, 0 );

              /*  newSuperior == oldParent? */
              if( dn_match( &p_ndn, op->oq_modrdn.rs_nnewSup ) ) {
                     Debug( LDAP_DEBUG_TRACE, "bdb_back_modrdn: "
                            "new parent \"%s\" same as the old parent \"%s\"\n",
                            op->oq_modrdn.rs_newSup->bv_val, p_dn.bv_val, 0 );
                     op->oq_modrdn.rs_newSup = NULL; /* ignore newSuperior */
              }
       }

       /* There's a BDB_MULTIPLE_SUFFIXES case here that this code doesn't
        * support. E.g., two suffixes dc=foo,dc=com and dc=bar,dc=net.
        * We do not allow modDN
        *   dc=foo,dc=com
        *    newrdn dc=bar
        *    newsup dc=net
        * and we probably should. But since MULTIPLE_SUFFIXES is deprecated
        * I'm ignoring this problem for now.
        */
       if ( op->oq_modrdn.rs_newSup != NULL ) {
              if ( op->oq_modrdn.rs_newSup->bv_len ) {
                     np_dn = op->oq_modrdn.rs_newSup;
                     np_ndn = op->oq_modrdn.rs_nnewSup;

                     /* newSuperior == oldParent? - checked above */
                     /* newSuperior == entry being moved?, if so ==> ERROR */
                     if ( dnIsSuffix( np_ndn, &e->e_nname )) {
                            rs->sr_err = LDAP_NO_SUCH_OBJECT;
                            rs->sr_text = "new superior not found";
                            goto return_results;
                     }
                     /* Get Entry with dn=newSuperior. Does newSuperior exist? */

                     rs->sr_err = bdb_dn2entry( op, ltid, np_ndn,
                            &neip, 0, &nplock );

                     switch( rs->sr_err ) {
                     case 0: np = neip->bei_e;
                     case DB_NOTFOUND:
                            break;
                     case DB_LOCK_DEADLOCK:
                     case DB_LOCK_NOTGRANTED:
                            goto retry;
                     case LDAP_BUSY:
                            rs->sr_text = "ldap server busy";
                            goto return_results;
                     default:
                            rs->sr_err = LDAP_OTHER;
                            rs->sr_text = "internal error";
                            goto return_results;
                     }

                     if( np == NULL) {
                            Debug( LDAP_DEBUG_TRACE,
                                   LDAP_XSTRING(bdb_modrdn)
                                   ": newSup(ndn=%s) not here!\n",
                                   np_ndn->bv_val, 0, 0);
                            rs->sr_text = "new superior not found";
                            rs->sr_err = LDAP_NO_SUCH_OBJECT;
                            goto return_results;
                     }

                     Debug( LDAP_DEBUG_TRACE,
                            LDAP_XSTRING(bdb_modrdn)
                            ": wr to new parent OK np=%p, id=%ld\n",
                            (void *) np, (long) np->e_id, 0 );

                     /* check newSuperior for "children" acl */
                     rs->sr_err = access_allowed( op, np, children,
                            NULL, ACL_WADD, NULL );

                     if( ! rs->sr_err ) {
                            switch( opinfo.boi_err ) {
                            case DB_LOCK_DEADLOCK:
                            case DB_LOCK_NOTGRANTED:
                                   goto retry;
                            }

                            Debug( LDAP_DEBUG_TRACE,
                                   LDAP_XSTRING(bdb_modrdn)
                                   ": no wr to newSup children\n",
                                   0, 0, 0 );
                            rs->sr_text = "no write access to new superior's children";
                            rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
                            goto return_results;
                     }

                     if ( is_entry_alias( np ) ) {
                            /* parent is an alias, don't allow add */
                            Debug( LDAP_DEBUG_TRACE,
                                   LDAP_XSTRING(bdb_modrdn)
                                   ": entry is alias\n",
                                   0, 0, 0 );
                            rs->sr_text = "new superior is an alias";
                            rs->sr_err = LDAP_ALIAS_PROBLEM;
                            goto return_results;
                     }

                     if ( is_entry_referral( np ) ) {
                            /* parent is a referral, don't allow add */
                            Debug( LDAP_DEBUG_TRACE,
                                   LDAP_XSTRING(bdb_modrdn)
                                   ": entry is referral\n",
                                   0, 0, 0 );
                            rs->sr_text = "new superior is a referral";
                            rs->sr_err = LDAP_OTHER;
                            goto return_results;
                     }

              } else {
                     np_dn = NULL;

                     /* no parent, modrdn entry directly under root */
                     if ( be_issuffix( op->o_bd, (struct berval *)&slap_empty_bv )
                            || be_isupdate( op ) ) {
                            np = (Entry *)&slap_entry_root;

                            /* check parent for "children" acl */
                            rs->sr_err = access_allowed( op, np,
                                   children, NULL, ACL_WADD, NULL );

                            np = NULL;

                            if ( ! rs->sr_err ) {
                                   switch( opinfo.boi_err ) {
                                   case DB_LOCK_DEADLOCK:
                                   case DB_LOCK_NOTGRANTED:
                                          goto retry;
                                   }

                                   rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
                                   Debug( LDAP_DEBUG_TRACE, 
                                          "no access to new superior\n", 
                                          0, 0, 0 );
                                   rs->sr_text =
                                          "no write access to new superior's children";
                                   goto return_results;
                            }
                     }
              }

              Debug( LDAP_DEBUG_TRACE,
                     LDAP_XSTRING(bdb_modrdn)
                     ": wr to new parent's children OK\n",
                     0, 0, 0 );

              new_parent_dn = np_dn;
       }

       /* Build target dn and make sure target entry doesn't exist already. */
       if (!new_dn.bv_val) {
              build_new_dn( &new_dn, new_parent_dn, &op->oq_modrdn.rs_newrdn, NULL ); 
       }

       if (!new_ndn.bv_val) {
              struct berval bv = {0, NULL};
              dnNormalize( 0, NULL, NULL, &new_dn, &bv, op->o_tmpmemctx );
              ber_dupbv( &new_ndn, &bv );
              /* FIXME: why not call dnNormalize() w/o ctx? */
              op->o_tmpfree( bv.bv_val, op->o_tmpmemctx );
       }

       Debug( LDAP_DEBUG_TRACE, LDAP_XSTRING(bdb_modrdn) ": new ndn=%s\n",
              new_ndn.bv_val, 0, 0 );

       /* Shortcut the search */
       nei = neip ? neip : eip;
       rs->sr_err = bdb_cache_find_ndn ( op, ltid, &new_ndn, &nei );
       if ( nei ) bdb_cache_entryinfo_unlock( nei );
       switch( rs->sr_err ) {
       case DB_LOCK_DEADLOCK:
       case DB_LOCK_NOTGRANTED:
              goto retry;
       case DB_NOTFOUND:
              break;
       case 0:
              /* Allow rename to same DN */
              if ( nei == ei )
                     break;
              rs->sr_err = LDAP_ALREADY_EXISTS;
              goto return_results;
       default:
              rs->sr_err = LDAP_OTHER;
              rs->sr_text = "internal error";
              goto return_results;
       }

       assert( op->orr_modlist != NULL );

       if( op->o_preread ) {
              if( preread_ctrl == NULL ) {
                     preread_ctrl = &ctrls[num_ctrls++];
                     ctrls[num_ctrls] = NULL;
              }
              if( slap_read_controls( op, rs, e,
                     &slap_pre_read_bv, preread_ctrl ) )
              {
                     Debug( LDAP_DEBUG_TRACE,        
                            "<=- " LDAP_XSTRING(bdb_modrdn)
                            ": pre-read failed!\n", 0, 0, 0 );
                     if ( op->o_preread & SLAP_CONTROL_CRITICAL ) {
                            /* FIXME: is it correct to abort
                             * operation if control fails? */
                            goto return_results;
                     }
              }                   
       }

       /* 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 ) {
              Debug( LDAP_DEBUG_TRACE,
                     LDAP_XSTRING(bdb_modrdn)
                     ": txn_begin(2) failed: %s (%d)\n",
                     db_strerror(rs->sr_err), rs->sr_err, 0 );
              rs->sr_err = LDAP_OTHER;
              rs->sr_text = "internal error";
              goto return_results;
       }

       /* delete old DN */
       rs->sr_err = bdb_dn2id_delete( op, lt2, eip, e );
       if ( rs->sr_err != 0 ) {
              Debug(LDAP_DEBUG_TRACE,
                     "<=- " LDAP_XSTRING(bdb_modrdn)
                     ": dn2id del failed: %s (%d)\n",
                     db_strerror(rs->sr_err), rs->sr_err, 0 );
              switch( rs->sr_err ) {
              case DB_LOCK_DEADLOCK:
              case DB_LOCK_NOTGRANTED:
                     goto retry;
              }
              rs->sr_err = LDAP_OTHER;
              rs->sr_text = "DN index delete fail";
              goto return_results;
       }

       /* copy the entry, then override some fields */
       dummy = *e;
       dummy.e_name = new_dn;
       dummy.e_nname = new_ndn;
       dummy.e_attrs = NULL;

       /* add new DN */
       rs->sr_err = bdb_dn2id_add( op, lt2, neip ? neip : eip, &dummy );
       if ( rs->sr_err != 0 ) {
              Debug(LDAP_DEBUG_TRACE,
                     "<=- " LDAP_XSTRING(bdb_modrdn)
                     ": dn2id add failed: %s (%d)\n",
                     db_strerror(rs->sr_err), rs->sr_err, 0 );
              switch( rs->sr_err ) {
              case DB_LOCK_DEADLOCK:
              case DB_LOCK_NOTGRANTED:
                     goto retry;
              }
              rs->sr_err = LDAP_OTHER;
              rs->sr_text = "DN index add failed";
              goto return_results;
       }

       dummy.e_attrs = e->e_attrs;

       /* modify entry */
       rs->sr_err = bdb_modify_internal( op, lt2, op->orr_modlist, &dummy,
              &rs->sr_text, textbuf, textlen );
       if( rs->sr_err != LDAP_SUCCESS ) {
              Debug(LDAP_DEBUG_TRACE,
                     "<=- " LDAP_XSTRING(bdb_modrdn)
                     ": modify failed: %s (%d)\n",
                     db_strerror(rs->sr_err), rs->sr_err, 0 );
              if ( ( rs->sr_err == LDAP_INSUFFICIENT_ACCESS ) && opinfo.boi_err ) {
                     rs->sr_err = opinfo.boi_err;
              }
              if ( dummy.e_attrs == e->e_attrs ) dummy.e_attrs = NULL;
              switch( rs->sr_err ) {
              case DB_LOCK_DEADLOCK:
              case DB_LOCK_NOTGRANTED:
                     goto retry;
              }
              goto return_results;
       }

       /* id2entry index */
       rs->sr_err = bdb_id2entry_update( op->o_bd, lt2, &dummy );
       if ( rs->sr_err != 0 ) {
              Debug(LDAP_DEBUG_TRACE,
                     "<=- " LDAP_XSTRING(bdb_modrdn)
                     ": id2entry failed: %s (%d)\n",
                     db_strerror(rs->sr_err), rs->sr_err, 0 );
              switch( rs->sr_err ) {
              case DB_LOCK_DEADLOCK:
              case DB_LOCK_NOTGRANTED:
                     goto retry;
              }
              rs->sr_err = LDAP_OTHER;
              rs->sr_text = "entry update failed";
              goto return_results;
       }

       if ( p_ndn.bv_len != 0 ) {
              parent_is_glue = is_entry_glue(p);
              rs->sr_err = bdb_cache_children( op, lt2, p );
              if ( rs->sr_err != DB_NOTFOUND ) {
                     switch( rs->sr_err ) {
                     case DB_LOCK_DEADLOCK:
                     case DB_LOCK_NOTGRANTED:
                            goto retry;
                     case 0:
                            break;
                     default:
                            Debug(LDAP_DEBUG_ARGS,
                                   "<=- " LDAP_XSTRING(bdb_modrdn)
                                   ": has_children failed: %s (%d)\n",
                                   db_strerror(rs->sr_err), rs->sr_err, 0 );
                            rs->sr_err = LDAP_OTHER;
                            rs->sr_text = "internal error";
                            goto return_results;
                     }
                     parent_is_leaf = 1;
              }
              bdb_unlocked_cache_return_entry_r(&bdb->bi_cache, p);
              p = NULL;
       }

       if ( TXN_COMMIT( lt2, 0 ) != 0 ) {
              rs->sr_err = LDAP_OTHER;
              rs->sr_text = "txn_commit(2) failed";
              goto return_results;
       }

       if( op->o_postread ) {
              if( postread_ctrl == NULL ) {
                     postread_ctrl = &ctrls[num_ctrls++];
                     ctrls[num_ctrls] = NULL;
              }
              if( slap_read_controls( op, rs, &dummy,
                     &slap_post_read_bv, postread_ctrl ) )
              {
                     Debug( LDAP_DEBUG_TRACE,        
                            "<=- " LDAP_XSTRING(bdb_modrdn)
                            ": post-read failed!\n", 0, 0, 0 );
                     if ( op->o_postread & SLAP_CONTROL_CRITICAL ) {
                            /* FIXME: is it correct to abort
                             * operation if control fails? */
                            goto return_results;
                     }
              }                   
       }

       if( op->o_noop ) {
              if(( rs->sr_err=TXN_ABORT( ltid )) != 0 ) {
                     rs->sr_text = "txn_abort (no-op) failed";
              } else {
                     rs->sr_err = LDAP_X_NO_OPERATION;
                     ltid = NULL;
                     /* Only free attrs if they were dup'd.  */
                     if ( dummy.e_attrs == e->e_attrs ) dummy.e_attrs = NULL;
                     goto return_results;
              }

       } else {
              rc = bdb_cache_modrdn( bdb, e, &op->orr_nnewrdn, &dummy, neip,
                     ltid, &lock );
              switch( rc ) {
              case DB_LOCK_DEADLOCK:
              case DB_LOCK_NOTGRANTED:
                     goto retry;
              }
              dummy.e_attrs = NULL;
              new_dn.bv_val = NULL;
              new_ndn.bv_val = NULL;

              if(( rs->sr_err=TXN_COMMIT( ltid, 0 )) != 0 ) {
                     rs->sr_text = "txn_commit failed";
              } else {
                     rs->sr_err = LDAP_SUCCESS;
              }
       }
 
       ltid = NULL;
       LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
       opinfo.boi_oe.oe_key = NULL;
 
       if( rs->sr_err != LDAP_SUCCESS ) {
              Debug( LDAP_DEBUG_TRACE,
                     LDAP_XSTRING(bdb_modrdn) ": %s : %s (%d)\n",
                     rs->sr_text, db_strerror(rs->sr_err), rs->sr_err );
              rs->sr_err = LDAP_OTHER;

              goto return_results;
       }

       Debug(LDAP_DEBUG_TRACE,
              LDAP_XSTRING(bdb_modrdn)
              ": rdn modified%s id=%08lx dn=\"%s\"\n",
              op->o_noop ? " (no-op)" : "",
              dummy.e_id, op->o_req_dn.bv_val );
       rs->sr_text = NULL;
       if( num_ctrls ) rs->sr_ctrls = ctrls;

return_results:
       if ( dummy.e_attrs ) {
              attrs_free( dummy.e_attrs );
       }
       send_ldap_result( op, rs );

       if( rs->sr_err == LDAP_SUCCESS && bdb->bi_txn_cp_kbyte ) {
              TXN_CHECKPOINT( bdb->bi_dbenv,
                     bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 );
       }
       
       if ( rs->sr_err == LDAP_SUCCESS && parent_is_glue && parent_is_leaf ) {
              op->o_delete_glue_parent = 1;
       }

done:
       slap_graduate_commit_csn( op );

       if( new_dn.bv_val != NULL ) free( new_dn.bv_val );
       if( new_ndn.bv_val != NULL ) free( new_ndn.bv_val );

       /* LDAP v3 Support */
       if( np != NULL ) {
              /* free new parent and reader lock */
              bdb_unlocked_cache_return_entry_r(&bdb->bi_cache, np);
       }

       if( p != NULL ) {
              /* free parent and reader lock */
              bdb_unlocked_cache_return_entry_r(&bdb->bi_cache, p);
       }

       /* free entry */
       if( e != NULL ) {
              bdb_unlocked_cache_return_entry_w( &bdb->bi_cache, e);
       }

       if( ltid != NULL ) {
              TXN_ABORT( ltid );
       }
       if ( opinfo.boi_oe.oe_key ) {
              LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next );
       }

       if( preread_ctrl != NULL && (*preread_ctrl) != NULL ) {
              slap_sl_free( (*preread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
              slap_sl_free( *preread_ctrl, op->o_tmpmemctx );
       }
       if( postread_ctrl != NULL && (*postread_ctrl) != NULL ) {
              slap_sl_free( (*postread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
              slap_sl_free( *postread_ctrl, op->o_tmpmemctx );
       }
       return rs->sr_err;
}