mojo/public/mojom/base/read_only_file.mojom

// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

module mojo_base.mojom;

// Corresponds to |base::File| in base/files/file.h but, on most
// platforms, will not serialise handles which are writable. At
// present this only supports physically backed files, but this may be
// relaxed in future.
//
// SECURITY_NOTE: This type is an indication that a readonly handle can
// be provided. A sandboxed process should ensure that the handle cannot
// be made writable. This may not be possible on all platforms.
//
// See |file_mojom_traits.cc| for details.
struct ReadOnlyFile {
  handle<platform> fd;
  bool async;
};