tdb_compat: make tdb2s temporarily read-only for tdb_traverse_read()

[rusty/samba.git] / lib / tdb_compat / tdb_compat.c

diff --git a/lib/tdb_compat/tdb_compat.c b/lib/tdb_compat/tdb_compat.c
index d736db1742e2d99b60ea3bfeaa47df00b03c9847..2e43564802242b62c872b9b643234eed3c93f2f6 100644 (file)
--- a/lib/tdb_compat/tdb_compat.c
+++ b/lib/tdb_compat/tdb_compat.c
@@ -38,6 +38,26 @@ enum TDB_ERROR tdb_transaction_start_nonblock(struct tdb_context *tdb)
        return ecode;
 }
 
+/* For TDB1 tdbs, read traverse vs normal matters: write traverse
+   locks the entire thing! */
+int64_t tdb_traverse_read_(struct tdb_context *tdb,
+                          int (*fn)(struct tdb_context *,
+                                                      TDB_DATA, TDB_DATA,
+                                                      void *),
+                          void *p)
+{
+       int64_t ret;
+
+       if (tdb_get_flags(tdb) & TDB_RDONLY) {
+               return tdb_traverse(tdb, fn, p);
+       }
+
+       tdb_add_flag(tdb, TDB_RDONLY);
+       ret = tdb_traverse(tdb, fn, p);
+       tdb_remove_flag(tdb, TDB_RDONLY);
+       return ret;
+}
+
 /*
  * This handles TDB_CLEAR_IF_FIRST.
  */