File: file_patcher.mojom

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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

module patch.mojom;

import "mojo/public/mojom/base/file.mojom";
import "sandbox/policy/mojom/sandbox.mojom";

// Keep in sync with //components/zucchini/zucchini.h.
enum ZucchiniStatus {
  kStatusSuccess,
  kStatusInvalidParam,
  kStatusFileReadError,
  kStatusFileWriteError,
  kStatusPatchReadError,
  kStatusPatchWriteError,
  kStatusInvalidOldImage,
  kStatusInvalidNewImage,
  kStatusDiskFull,
  kStatusIoError,
  kStatusFatal,
};

// Interface to the out-of-process file patcher. The file patcher runs
// utilities to apply a differential patch to a file, often for the purposes of
// software updates.
[ServiceSandbox=sandbox.mojom.Sandbox.kService]
interface FilePatcher {
  // Patches `input_file` with `patch_file` using the PuffPatch algorithm and
  // writes the output to `output_file`. Returns `result` puffin::Status::P_OK
  // (0) on success.
  PatchFilePuffPatch(mojo_base.mojom.ReadOnlyFile input_file,
                     mojo_base.mojom.ReadOnlyFile patch_file,
                     mojo_base.mojom.File output_file) => (int32 result);

  // Patches `input_file` with `patch_file` using the Zucchini algorithm and
  // writes the output to `output_file`. Returns 0 on success.
  PatchFileZucchini(mojo_base.mojom.ReadOnlyFile input_file,
                    mojo_base.mojom.ReadOnlyFile patch_file,
                    mojo_base.mojom.File output_file)
      => (ZucchiniStatus result);
};