diff --git a/source3/smbd/globals.h b/source3/smbd/globals.h
index 150275894b6..d6ca15286db 100644
--- a/source3/smbd/globals.h
+++ b/source3/smbd/globals.h
@@ -247,6 +247,7 @@ NTSTATUS smbd_smb2_request_pending_queue(struct smbd_smb2_request *req,
 					 uint32_t defer_time);
 
 struct smb_request *smbd_smb2_fake_smb_request(struct smbd_smb2_request *req);
+size_t smbd_smb2_unread_bytes(struct smbd_smb2_request *req);
 void remove_smb2_chained_fsp(files_struct *fsp);
 
 NTSTATUS smbd_smb2_request_verify_creditcharge(struct smbd_smb2_request *req,
diff --git a/source3/smbd/smb2_glue.c b/source3/smbd/smb2_glue.c
index 9fc1e49c2e5..54135b55853 100644
--- a/source3/smbd/smb2_glue.c
+++ b/source3/smbd/smb2_glue.c
@@ -58,6 +58,18 @@ struct smb_request *smbd_smb2_fake_smb_request(struct smbd_smb2_request *req)
 	return smbreq;
 }
 
+/*********************************************************
+ Are there unread bytes for recvfile ?
+*********************************************************/
+
+size_t smbd_smb2_unread_bytes(struct smbd_smb2_request *req)
+{
+	if (req->smb1req) {
+		return req->smb1req->unread_bytes;
+	}
+	return 0;
+}
+
 /*********************************************************
  Called from file_free() to remove any chained fsp pointers.
 *********************************************************/