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-rw-r--r--source4/lib/ldb/ldb_tdb/ldb_tdb.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/source4/lib/ldb/ldb_tdb/ldb_tdb.c b/source4/lib/ldb/ldb_tdb/ldb_tdb.c
index 55acb6132d..7427b98163 100644
--- a/source4/lib/ldb/ldb_tdb/ldb_tdb.c
+++ b/source4/lib/ldb/ldb_tdb/ldb_tdb.c
@@ -621,8 +621,14 @@ int ltdb_modify_internal(struct ldb_module *module,
struct ldb_val *vals;
const char *dn;
const struct ldb_schema_attribute *a = ldb_schema_attribute_by_name(ldb, el->name);
- switch (msg->elements[i].flags & LDB_FLAG_MOD_MASK) {
+ if (ldb_attr_cmp(el->name, "distinguishedName") == 0) {
+ ldb_asprintf_errstring(ldb, "it is not permitted to perform a modify on distinguishedName (use rename instead): %s",
+ ldb_dn_get_linearized(msg->dn));
+ return LDB_ERR_UNWILLING_TO_PERFORM;
+ }
+
+ switch (msg->elements[i].flags & LDB_FLAG_MOD_MASK) {
case LDB_FLAG_MOD_ADD:
/* add this element to the message. fail if it