text: /* modify.c - mdb backend modify routine */
  /* $OpenLDAP$ */
  /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   *
   * Copyright 2000-2015 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 <stdio.h>
  #include <ac/string.h>
  #include <ac/time.h>
  
  #include "back-mdb.h"
  
  static struct berval scbva[] = {
  	BER_BVC("glue"),
  	BER_BVNULL
  };
  
  static void
  mdb_modify_idxflags(
  	Operation *op,
  	AttributeDescription *desc,
  	int got_delete,
  	Attribute *newattrs,
  	Attribute *oldattrs )
  {
  	struct berval	ix_at;
  	AttrInfo	*ai;
  
  	/* check if modified attribute was indexed
  	 * but not in case of NOOP... */
  	ai = mdb_index_mask( op->o_bd, desc, &ix_at );
  	if ( ai ) {
  		if ( got_delete ) {
  			Attribute 	*ap;
  			struct berval	ix2;
  
  			ap = attr_find( oldattrs, desc );
  			if ( ap ) ap->a_flags |= SLAP_ATTR_IXDEL;
  
  			/* Find all other attrs that index to same slot */
  			for ( ap = newattrs; ap; ap = ap->a_next ) {
  				ai = mdb_index_mask( op->o_bd, ap->a_desc, &ix2 );
  				if ( ai && ix2.bv_val == ix_at.bv_val )
  					ap->a_flags |= SLAP_ATTR_IXADD;
  			}
  
  		} else {
  			Attribute 	*ap;
  
  			ap = attr_find( newattrs, desc );
  			if ( ap ) ap->a_flags |= SLAP_ATTR_IXADD;
  		}
  	}
  }
  
  int mdb_modify_internal(
  	Operation *op,
  	MDB_txn *tid,
  	Modifications *modlist,
  	Entry *e,
  	const char **text,
  	char *textbuf,
  	size_t textlen )
  {
  	int rc, err;
  	Modification	*mod;
  	Modifications	*ml;
  	Attribute	*save_attrs;
  	Attribute 	*ap;
  	int			glue_attr_delete = 0;
  	int			got_delete;
  
  	Debug( LDAP_DEBUG_TRACE, "mdb_modify_internal: 0x%08lx: %s\n",
  		e->e_id, e->e_dn, 0);
  
  	if ( !acl_check_modlist( op, e, modlist )) {
  		return LDAP_INSUFFICIENT_ACCESS;
  	}
  
  	/* save_attrs will be disposed of by caller */
  	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;
  		got_delete = 0;
  
  		switch ( mod->sm_op ) {
  		case LDAP_MOD_ADD:
  			Debug(LDAP_DEBUG_ARGS,
  				"mdb_modify_internal: add %s\n",
  				mod->sm_desc->ad_cname.bv_val, 0, 0);
  			err = modify_add_values( e, mod, get_permissiveModify(op),
  				text, textbuf, textlen );
  			if( err != LDAP_SUCCESS ) {
  				Debug(LDAP_DEBUG_ARGS, "mdb_modify_internal: %d %s\n",
  					err, *text, 0);
  			}
  			break;
  
  		case LDAP_MOD_DELETE:
  			if ( glue_attr_delete ) {
  				err = LDAP_SUCCESS;
  				break;
  			}
  
  			Debug(LDAP_DEBUG_ARGS,
  				"mdb_modify_internal: delete %s\n",
  				mod->sm_desc->ad_cname.bv_val, 0, 0);
  			err = modify_delete_values( e, mod, get_permissiveModify(op),
  				text, textbuf, textlen );
  			if( err != LDAP_SUCCESS ) {
  				Debug(LDAP_DEBUG_ARGS, "mdb_modify_internal: %d %s\n",
  					err, *text, 0);
  			} else {
  				got_delete = 1;
  			}
  			break;
  
  		case LDAP_MOD_REPLACE:
  			Debug(LDAP_DEBUG_ARGS,
  				"mdb_modify_internal: replace %s\n",
  				mod->sm_desc->ad_cname.bv_val, 0, 0);
  			err = modify_replace_values( e, mod, get_permissiveModify(op),
  				text, textbuf, textlen );
  			if( err != LDAP_SUCCESS ) {
  				Debug(LDAP_DEBUG_ARGS, "mdb_modify_internal: %d %s\n",
  					err, *text, 0);
  			} else {
  				got_delete = 1;
  			}
  			break;
  
  		case LDAP_MOD_INCREMENT:
  			Debug(LDAP_DEBUG_ARGS,
  				"mdb_modify_internal: increment %s\n",
  				mod->sm_desc->ad_cname.bv_val, 0, 0);
  			err = modify_increment_values( e, mod, get_permissiveModify(op),
  				text, textbuf, textlen );
  			if( err != LDAP_SUCCESS ) {
  				Debug(LDAP_DEBUG_ARGS,
  					"mdb_modify_internal: %d %s\n",
  					err, *text, 0);
  			} else {
  				got_delete = 1;
  			}
  			break;
  
  		case SLAP_MOD_SOFTADD:
  			Debug(LDAP_DEBUG_ARGS,
  				"mdb_modify_internal: softadd %s\n",
  				mod->sm_desc->ad_cname.bv_val, 0, 0);
   			/* Avoid problems in index_add_mods()
   			 * We need to add index if necessary.
   			 */
   			mod->sm_op = LDAP_MOD_ADD;
  
  			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;
   			}
  
  			if( err != LDAP_SUCCESS ) {
  				Debug(LDAP_DEBUG_ARGS, "mdb_modify_internal: %d %s\n",
  					err, *text, 0);
  			}
   			break;
  
  		case SLAP_MOD_SOFTDEL:
  			Debug(LDAP_DEBUG_ARGS,
  				"mdb_modify_internal: softdel %s\n",
  				mod->sm_desc->ad_cname.bv_val, 0, 0);
   			/* Avoid problems in index_delete_mods()
   			 * We need to add index if necessary.
   			 */
   			mod->sm_op = LDAP_MOD_DELETE;
  
  			err = modify_delete_values( e, mod, get_permissiveModify(op),
  				text, textbuf, textlen );
  
   			mod->sm_op = SLAP_MOD_SOFTDEL;
  
  			if ( err == LDAP_SUCCESS ) {
  				got_delete = 1;
  			} else if ( err == LDAP_NO_SUCH_ATTRIBUTE ) {
   				err = LDAP_SUCCESS;
   			}
  
  			if( err != LDAP_SUCCESS ) {
  				Debug(LDAP_DEBUG_ARGS, "mdb_modify_internal: %d %s\n",
  					err, *text, 0);
  			}
   			break;
  
  		case SLAP_MOD_ADD_IF_NOT_PRESENT:
  			if ( attr_find( e->e_attrs, mod->sm_desc ) != NULL ) {
  				/* skip */
  				err = LDAP_SUCCESS;
  				break;
  			}
  
  			Debug(LDAP_DEBUG_ARGS,
  				"mdb_modify_internal: add_if_not_present %s\n",
  				mod->sm_desc->ad_cname.bv_val, 0, 0);
   			/* Avoid problems in index_add_mods()
   			 * We need to add index if necessary.
   			 */
   			mod->sm_op = LDAP_MOD_ADD;
  
  			err = modify_add_values( e, mod, get_permissiveModify(op),
  				text, textbuf, textlen );
  
   			mod->sm_op = SLAP_MOD_ADD_IF_NOT_PRESENT;
  
  			if( err != LDAP_SUCCESS ) {
  				Debug(LDAP_DEBUG_ARGS, "mdb_modify_internal: %d %s\n",
  					err, *text, 0);
  			}
   			break;
  
  		default:
  			Debug(LDAP_DEBUG_ANY, "mdb_modify_internal: invalid op %d\n",
  				mod->sm_op, 0, 0);
  			*text = "Invalid modify operation";
  			err = LDAP_OTHER;
  			Debug(LDAP_DEBUG_ARGS, "mdb_modify_internal: %d %s\n",
  				err, *text, 0);
  		}
  
  		if ( err != LDAP_SUCCESS ) {
  			attrs_free( e->e_attrs );
  			e->e_attrs = save_attrs;
  			/* unlock entry, delete from cache */
  			return err; 
  		}
  
  		/* If objectClass was modified, reset the flags */
  		if ( mod->sm_desc == slap_schema.si_ad_objectClass ) {
  			e->e_ocflags = 0;
  		}
  
  		if ( glue_attr_delete ) e->e_ocflags = 0;
  
  
  		/* check if modified attribute was indexed
  		 * but not in case of NOOP... */
  		if ( !op->o_noop ) {
  			mdb_modify_idxflags( op, mod->sm_desc, got_delete, e->e_attrs, save_attrs );
  		}
  	}
  
  	/* check that the entry still obeys the schema */
  	ap = NULL;
  	rc = entry_schema_check( op, e, save_attrs, get_relax(op), 0, &ap,
  		text, textbuf, textlen );
  	if ( rc != LDAP_SUCCESS || op->o_noop ) {
  		attrs_free( e->e_attrs );
  		/* clear the indexing flags */
  		for ( ap = save_attrs; ap != NULL; ap = ap->a_next ) {
  			ap->a_flags &= ~(SLAP_ATTR_IXADD|SLAP_ATTR_IXDEL);
  		}
  		e->e_attrs = save_attrs;
  
  		if ( rc != LDAP_SUCCESS ) {
  			Debug( LDAP_DEBUG_ANY,
  				"entry failed schema check: %s\n",
  				*text, 0, 0 );
  		}
  
  		/* if NOOP then silently revert to saved attrs */
  		return rc;
  	}
  
  	/* structuralObjectClass modified! */
  	if ( ap ) {
  		assert( ap->a_desc == slap_schema.si_ad_structuralObjectClass );
  		if ( !op->o_noop ) {
  			mdb_modify_idxflags( op, slap_schema.si_ad_structuralObjectClass,
  				1, e->e_attrs, save_attrs );
  		}
  	}
  
  	/* update the indices of the modified attributes */
  
  	/* start with deleting the old index entries */
  	for ( ap = save_attrs; ap != NULL; ap = ap->a_next ) {
  		if ( ap->a_flags & SLAP_ATTR_IXDEL ) {
  			struct berval *vals;
  			Attribute *a2;
  			ap->a_flags &= ~SLAP_ATTR_IXDEL;
  			a2 = attr_find( e->e_attrs, ap->a_desc );
  			if ( a2 ) {
  				/* need to detect which values were deleted */
  				int i, j;
  				/* let add know there were deletes */
  				if ( a2->a_flags & SLAP_ATTR_IXADD )
  					a2->a_flags |= SLAP_ATTR_IXDEL;
  				vals = op->o_tmpalloc( (ap->a_numvals + 1) *
  					sizeof(struct berval), op->o_tmpmemctx );
  				j = 0;
  				for ( i=0; i < ap->a_numvals; i++ ) {
  					rc = attr_valfind( a2, SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
  						&ap->a_nvals[i], NULL, op->o_tmpmemctx );
  					/* Save deleted values */
  					if ( rc == LDAP_NO_SUCH_ATTRIBUTE )
  						vals[j++] = ap->a_nvals[i];
  				}
  				BER_BVZERO(vals+j);
  			} else {
  				/* attribute was completely deleted */
  				vals = ap->a_nvals;
  			}
  			rc = 0;
  			if ( !BER_BVISNULL( vals )) {
  				rc = mdb_index_values( op, tid, ap->a_desc,
  					vals, e->e_id, SLAP_INDEX_DELETE_OP );
  				if ( rc != LDAP_SUCCESS ) {
  					Debug( LDAP_DEBUG_ANY,
  						"%s: attribute \"%s\" index delete failure\n",
  						op->o_log_prefix, ap->a_desc->ad_cname.bv_val, 0 );
  					attrs_free( e->e_attrs );
  					e->e_attrs = save_attrs;
  				}
  			}
  			if ( vals != ap->a_nvals )
  				op->o_tmpfree( vals, op->o_tmpmemctx );
  			if ( rc ) return rc;
  		}
  	}
  
  	/* add the new index entries */
  	for ( ap = e->e_attrs; ap != NULL; ap = ap->a_next ) {
  		if (ap->a_flags & SLAP_ATTR_IXADD) {
  			ap->a_flags &= ~SLAP_ATTR_IXADD;
  			if ( ap->a_flags & SLAP_ATTR_IXDEL ) {
  				/* if any values were deleted, we must readd index
  				 * for all remaining values.
  				 */
  				ap->a_flags &= ~SLAP_ATTR_IXDEL;
  				rc = mdb_index_values( op, tid, ap->a_desc,
  					ap->a_nvals,
  					e->e_id, SLAP_INDEX_ADD_OP );
  			} else {
  				int found = 0;
  				/* if this was only an add, we only need to index
  				 * the added values.
  				 */
  				for ( ml = modlist; ml != NULL; ml = ml->sml_next ) {
  					struct berval *vals;
  					if ( ml->sml_desc != ap->a_desc || !ml->sml_numvals )
  						continue;
  					found = 1;
  					switch( ml->sml_op ) {
  					case LDAP_MOD_ADD:
  					case LDAP_MOD_REPLACE:
  					case LDAP_MOD_INCREMENT:
  					case SLAP_MOD_SOFTADD:
  					case SLAP_MOD_ADD_IF_NOT_PRESENT:
  						if ( ml->sml_op == LDAP_MOD_INCREMENT )
  							vals = ap->a_nvals;
  						else if ( ml->sml_nvalues )
  							vals = ml->sml_nvalues;
  						else
  							vals = ml->sml_values;
  						rc = mdb_index_values( op, tid, ap->a_desc,
  							vals, e->e_id, SLAP_INDEX_ADD_OP );
  						break;
  					}
  					if ( rc )
  						break;
  				}
  				/* This attr was affected by a modify of a subtype, so
  				 * there was no direct match in the modlist. Just readd
  				 * all of its values.
  				 */
  				if ( !found ) {
  					rc = mdb_index_values( op, tid, ap->a_desc,
  						ap->a_nvals,
  						e->e_id, SLAP_INDEX_ADD_OP );
  				}
  			}
  			if ( rc != LDAP_SUCCESS ) {
  				Debug( LDAP_DEBUG_ANY,
  				       "%s: attribute \"%s\" index add failure\n",
  					op->o_log_prefix, ap->a_desc->ad_cname.bv_val, 0 );
  				attrs_free( e->e_attrs );
  				e->e_attrs = save_attrs;
  				return rc;
  			}
  		}
  	}
  
  	return rc;
  }
  
  
  int
  mdb_modify( Operation *op, SlapReply *rs )
  {
  	struct mdb_info *mdb = (struct mdb_info *) op->o_bd->be_private;
  	Entry		*e = NULL;
  	int		manageDSAit = get_manageDSAit( op );
  	char textbuf[SLAP_TEXT_BUFLEN];
  	size_t textlen = sizeof textbuf;
  	MDB_txn	*txn = NULL;
  	mdb_op_info opinfo = {{{ 0 }}}, *moi = &opinfo;
  	Entry		dummy = {0};
  
  	LDAPControl **preread_ctrl = NULL;
  	LDAPControl **postread_ctrl = NULL;
  	LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS];
  	int num_ctrls = 0;
  
  	Debug( LDAP_DEBUG_ARGS, LDAP_XSTRING(mdb_modify) ": %s\n",
  		op->o_req_dn.bv_val, 0, 0 );
  
  #ifdef LDAP_X_TXN
  	if( op->o_txnSpec && txn_preop( op, rs ))
  		return rs->sr_err;
  #endif
  
  	ctrls[num_ctrls] = NULL;
  
  	/* begin transaction */
  	rs->sr_err = mdb_opinfo_get( op, mdb, 0, &moi );
  	rs->sr_text = NULL;
  	if( rs->sr_err != 0 ) {
  		Debug( LDAP_DEBUG_TRACE,
  			LDAP_XSTRING(mdb_modify) ": txn_begin failed: "
  			"%s (%d)\n", mdb_strerror(rs->sr_err), rs->sr_err, 0 );
  		rs->sr_err = LDAP_OTHER;
  		rs->sr_text = "internal error";
  		goto return_results;
  	}
  	txn = moi->moi_txn;
  
  	/* Don't touch the opattrs, if this is a contextCSN update
  	 * initiated from updatedn */
  	if ( !be_isupdate(op) || !op->orm_modlist || op->orm_modlist->sml_next ||
  		 op->orm_modlist->sml_desc != slap_schema.si_ad_contextCSN ) {
  
  		slap_mods_opattrs( op, &op->orm_modlist, 1 );
  	}
  
  	/* get entry or ancestor */
  	rs->sr_err = mdb_dn2entry( op, txn, NULL, &op->o_req_ndn, &e, NULL, 1 );
  
  	if ( rs->sr_err != 0 ) {
  		Debug( LDAP_DEBUG_TRACE,
  			LDAP_XSTRING(mdb_modify) ": dn2entry failed (%d)\n",
  			rs->sr_err, 0, 0 );
  		switch( rs->sr_err ) {
  		case MDB_NOTFOUND:
  			break;
  		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;
  		}
  	}
  
  	/* acquire and lock entry */
  	/* FIXME: dn2entry() should return non-glue entry */
  	if (( rs->sr_err == MDB_NOTFOUND ) ||
  		( !manageDSAit && e && is_entry_glue( e )))
  	{
  		if ( e != NULL ) {
  			rs->sr_matched = ch_strdup( e->e_dn );
  			if ( is_entry_referral( e )) {
  				BerVarray ref = get_entry_referrals( op, e );
  				rs->sr_ref = referral_rewrite( ref, &e->e_name,
  					&op->o_req_dn, LDAP_SCOPE_DEFAULT );
  				ber_bvarray_free( ref );
  			} else {
  				rs->sr_ref = NULL;
  			}
  			mdb_entry_return( op, e );
  			e = NULL;
  
  		} else {
  			rs->sr_ref = referral_rewrite( default_referral, NULL,
  				&op->o_req_dn, LDAP_SCOPE_DEFAULT );
  		}
  
  		rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED;
  		rs->sr_err = LDAP_REFERRAL;
  		send_ldap_result( op, rs );
  		goto done;
  	}
  
  	if ( !manageDSAit && is_entry_referral( e ) ) {
  		/* entry is a referral, don't allow modify */
  		rs->sr_ref = get_entry_referrals( op, e );
  
  		Debug( LDAP_DEBUG_TRACE,
  			LDAP_XSTRING(mdb_modify) ": entry is referral\n",
  			0, 0, 0 );
  
  		rs->sr_err = LDAP_REFERRAL;
  		rs->sr_matched = e->e_name.bv_val;
  		rs->sr_flags = REP_REF_MUSTBEFREED;
  		send_ldap_result( op, rs );
  		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;
  	}
  
  	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(mdb_modify) ": 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;
  			}
  		}
  	}
  
  	/* Modify the entry */
  	dummy = *e;
  	rs->sr_err = mdb_modify_internal( op, txn, op->orm_modlist,
  		&dummy, &rs->sr_text, textbuf, textlen );
  
  	if( rs->sr_err != LDAP_SUCCESS ) {
  		Debug( LDAP_DEBUG_TRACE,
  			LDAP_XSTRING(mdb_modify) ": modify failed (%d)\n",
  			rs->sr_err, 0, 0 );
  		/* Only free attrs if they were dup'd.  */
  		if ( dummy.e_attrs == e->e_attrs ) dummy.e_attrs = NULL;
  		goto return_results;
  	}
  
  	/* change the entry itself */
  	rs->sr_err = mdb_id2entry_update( op, txn, NULL, &dummy );
  	if ( rs->sr_err != 0 ) {
  		Debug( LDAP_DEBUG_TRACE,
  			LDAP_XSTRING(mdb_modify) ": id2entry update failed " "(%d)\n",
  			rs->sr_err, 0, 0 );
  		if ( rs->sr_err == LDAP_ADMINLIMIT_EXCEEDED ) {
  			rs->sr_text = "entry too big";
  		} else {
  			rs->sr_err = LDAP_OTHER;
  			rs->sr_text = "entry update 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(mdb_modify)
  				": 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;
  			}
  		}
  	}
  
  	/* Only free attrs if they were dup'd.  */
  	if ( dummy.e_attrs == e->e_attrs ) dummy.e_attrs = NULL;
  	if( moi == &opinfo ) {
  		LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.moi_oe, OpExtra, oe_next );
  		opinfo.moi_oe.oe_key = NULL;
  		if( op->o_noop ) {
  			mdb_txn_abort( txn );
  			rs->sr_err = LDAP_X_NO_OPERATION;
  			txn = NULL;
  			goto return_results;
  		} else {
  			rs->sr_err = mdb_txn_commit( txn );
  			txn = NULL;
  		}
  	}
  
  	if( rs->sr_err != 0 ) {
  		Debug( LDAP_DEBUG_ANY,
  			LDAP_XSTRING(mdb_modify) ": txn_%s failed: %s (%d)\n",
  			op->o_noop ? "abort (no-op)" : "commit",
  			mdb_strerror(rs->sr_err), rs->sr_err );
  		rs->sr_err = LDAP_OTHER;
  		rs->sr_text = "commit failed";
  
  		goto return_results;
  	}
  
  	Debug( LDAP_DEBUG_TRACE,
  		LDAP_XSTRING(mdb_modify) ": updated%s id=%08lx dn=\"%s\"\n",
  		op->o_noop ? " (no-op)" : "",
  		dummy.e_id, op->o_req_dn.bv_val );
  
  	rs->sr_err = LDAP_SUCCESS;
  	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 0
  	if( rs->sr_err == LDAP_SUCCESS && mdb->bi_txn_cp_kbyte ) {
  		TXN_CHECKPOINT( mdb->bi_dbenv,
  			mdb->bi_txn_cp_kbyte, mdb->bi_txn_cp_min, 0 );
  	}
  #endif
  
  done:
  	slap_graduate_commit_csn( op );
  
  	if( moi == &opinfo ) {
  		if( txn != NULL ) {
  			mdb_txn_abort( txn );
  		}
  		if ( opinfo.moi_oe.oe_key ) {
  			LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.moi_oe, OpExtra, oe_next );
  		}
  	} else {
  		moi->moi_ref--;
  	}
  
  	if( e != NULL ) {
  		mdb_entry_return( op, e );
  	}
  
  	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 );
  	}
  
  	rs->sr_text = NULL;
  
  	return rs->sr_err;
  }
  