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-rw-r--r--source3/winbindd/idmap_tdb.c18
1 files changed, 16 insertions, 2 deletions
diff --git a/source3/winbindd/idmap_tdb.c b/source3/winbindd/idmap_tdb.c
index 57a5e1c6ba..d99d2f0e4e 100644
--- a/source3/winbindd/idmap_tdb.c
+++ b/source3/winbindd/idmap_tdb.c
@@ -146,9 +146,23 @@ static bool idmap_tdb_upgrade(struct idmap_domain *dom, struct db_context *db)
bool bigendianheader;
struct convert_fn_state s;
- DEBUG(0, ("Upgrading winbindd_idmap.tdb from an old version\n"));
-
+#if BUILD_TDB2
+ /* If we are bigendian, tdb is bigendian if NOT converted. */
+ union {
+ uint16 large;
+ unsigned char small[2];
+ } u;
+ u.large = 0x0102;
+ if (u.small[0] == 0x01)
+ bigendianheader = !(db->get_flags(db) & TDB_CONVERT);
+ else {
+ assert(u.small[0] == 0x02);
+ bigendianheader = (db->get_flags(db) & TDB_CONVERT);
+ }
+#else
bigendianheader = (db->get_flags(db) & TDB_BIGENDIAN) ? True : False;
+#endif
+ DEBUG(0, ("Upgrading winbindd_idmap.tdb from an old version\n"));
vers = dbwrap_fetch_int32(db, "IDMAP_VERSION");