diff --git a/libraries/liblmdb/lmdb.h b/libraries/liblmdb/lmdb.h
index 7d0d7e1023..2653e5885f 100644
--- a/libraries/liblmdb/lmdb.h
+++ b/libraries/liblmdb/lmdb.h
@@ -1177,6 +1177,14 @@ MDB_env *mdb_txn_env(MDB_txn *txn);
 	 */
 mdb_size_t mdb_txn_id(MDB_txn *txn);
 
+	/** @brief Retrieve the transaction's flags
+	 *
+	 * @param[in] txn A transaction handle returned by #mdb_txn_begin()
+	 * @param[out] flags Address where the flags will be returned.
+	 * @return A non-zero error value on failure and 0 on success.
+	 */
+int mdb_txn_flags(MDB_txn *txn, unsigned int *flags);
+
 	/** @brief Commit all the operations of a transaction into the database.
 	 *
 	 * The transaction handle is freed. It and its cursors must not be used
diff --git a/libraries/liblmdb/mdb.c b/libraries/liblmdb/mdb.c
index 80654cd672..3424f15039 100644
--- a/libraries/liblmdb/mdb.c
+++ b/libraries/liblmdb/mdb.c
@@ -3642,6 +3642,13 @@ mdb_txn_id(MDB_txn *txn)
     return txn->mt_txnid;
 }
 
+int mdb_txn_flags(MDB_txn *txn, unsigned int *flags)
+{
+    if(!txn) return EINVAL;
+    *flags = txn->mt_flags & MDB_RDONLY;
+    return MDB_SUCCESS;
+}
+
 /** Export or close DBI handles opened in this txn. */
 static void
 mdb_dbis_update(MDB_txn *txn, int keep)