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authorAndrew Tridgell <tridge@samba.org>2009-06-04 13:52:40 +1000
committerAndrew Tridgell <tridge@samba.org>2009-06-04 14:10:11 +1000
commit0849c1ef77a0538d5d232016a51c002e2197e776 (patch)
tree350735123a1815fd651113a3a25fd53c071c8879 /source4/lib/ldb/ldb_tdb
parent8ca8dabe4615416153be9be7be16558e43d17381 (diff)
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fixed ldb rename now that we have unique indexes
With unique indexes, any rename of a record that has an attribute that is uniquely indexed needs to be done as a delete followed by an add, otherwse you'll get an error that the attribute value already exists.
Diffstat (limited to 'source4/lib/ldb/ldb_tdb')
-rw-r--r--source4/lib/ldb/ldb_tdb/ldb_tdb.c41
1 files changed, 11 insertions, 30 deletions
diff --git a/source4/lib/ldb/ldb_tdb/ldb_tdb.c b/source4/lib/ldb/ldb_tdb/ldb_tdb.c
index 0f84b67afa..4a452761b8 100644
--- a/source4/lib/ldb/ldb_tdb/ldb_tdb.c
+++ b/source4/lib/ldb/ldb_tdb/ldb_tdb.c
@@ -805,37 +805,18 @@ static int ltdb_rename(struct ltdb_context *ctx)
return LDB_ERR_OPERATIONS_ERROR;
}
- if (ldb_dn_compare(req->op.rename.olddn, req->op.rename.newdn) == 0) {
- /* The rename operation is apparently only changing case -
- the DNs are the same. Delete the old DN before adding
- the new one to avoid a TDB_ERR_EXISTS error.
-
- The only drawback to this is that if the delete
- succeeds but the add fails, we rely on the
- transaction to roll this all back. */
- tret = ltdb_delete_internal(module, req->op.rename.olddn);
- if (tret != LDB_SUCCESS) {
- return tret;
- }
-
- tret = ltdb_add_internal(module, msg);
- if (tret != LDB_SUCCESS) {
- return tret;
- }
- } else {
- /* The rename operation is changing DNs. Try to add the new
- DN first to avoid clobbering another DN not related to
- this rename operation. */
- tret = ltdb_add_internal(module, msg);
- if (tret != LDB_SUCCESS) {
- return tret;
- }
+ /* Always delete first then add, to avoid conflicts with
+ * unique indexes. We rely on the transaction to make this
+ * atomic
+ */
+ tret = ltdb_delete_internal(module, req->op.rename.olddn);
+ if (tret != LDB_SUCCESS) {
+ return tret;
+ }
- tret = ltdb_delete_internal(module, req->op.rename.olddn);
- if (tret != LDB_SUCCESS) {
- ltdb_delete_internal(module, req->op.rename.newdn);
- return LDB_ERR_OPERATIONS_ERROR;
- }
+ tret = ltdb_add_internal(module, msg);
+ if (tret != LDB_SUCCESS) {
+ return tret;
}
return LDB_SUCCESS;