Server 2.3.4 & back-sql (+ back.c dif) cannot modify database

[Ken Johanson <openldap.ken@onnet.cc>]

Hello,

I successfully built the server using the diff provided earlier by 
Hallvard (thanks!) and I can now read from the database via LDAP, 
however I cannot modify entries or attributes.

In trace mode, I see the following:

  backsql_modify(): modifying entry "cn=Torvlobnor 
Puzdoy,dc=example,dc=com" (id=3)
<= acl_access_allowed: granted to database root
==>backsql_modify_internal(): traversing modifications list
   backsql_modify_internal(): modifying attribute "cn" (replace) 
according to mappings for objectClass "inetOrgPerson"
   backsql_modify_internal(): replacing values for attribute "cn"
   backsql_modify_internal(): add procedure is not defined for 
attribute "cn" - unable to perform replacements
   backsql_modify_internal(): modifying attribute "entryCSN" (replace) 
according to mappings for objectClass "inetOrgPerson"
   backsql_modify_internal(): modifying attribute "modifiersName" 
(replace) according to mappings for objectClass "inetOrgPerson"
   backsql_modify_internal(): modifying attribute "modifyTimestamp" 
(replace) according to mappings for objectClass "inetOrgPerson"

The "add procedure is not defined for attribute "cn" - unable to perform 
replacements" line seems to be the problem.

Is there an additional 'insentry_stmt' type paramter that I would need 
in slapd.conf?

Thanks kindly,

Ken