file_system_access_incognito_file_delegate.cc

// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/351564777): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif

#include "third_party/blink/renderer/modules/file_system_access/file_system_access_incognito_file_delegate.h"

#include <optional>

#include "base/files/file.h"
#include "base/files/file_error_or.h"
#include "base/memory/scoped_refptr.h"
#include "base/numerics/safe_conversions.h"
#include "base/task/sequenced_task_runner.h"
#include "base/task/thread_pool.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "mojo/public/cpp/system/string_data_source.h"
#include "third_party/blink/public/common/blob/blob_utils.h"
#include "third_party/blink/renderer/core/execution_context/execution_context.h"
#include "third_party/blink/renderer/modules/file_system_access/file_system_access_file_delegate.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/scheduler/public/post_cross_thread_task.h"
#include "third_party/blink/renderer/platform/wtf/cross_thread_copier_base.h"
#include "third_party/blink/renderer/platform/wtf/cross_thread_copier_mojo.h"
#include "third_party/blink/renderer/platform/wtf/cross_thread_functional.h"
#include "third_party/blink/renderer/platform/wtf/wtf.h"
#include "third_party/blink/renderer/platform/wtf/wtf_size_t.h"

namespace blink {

namespace {

// Creates a mojo data pipe, where the capacity of the data pipe is derived from
// the provided `data_size`. Returns false if creating the data pipe failed.
bool CreateDataPipeForSize(uint64_t data_size,
                           mojo::ScopedDataPipeProducerHandle& producer,
                           mojo::ScopedDataPipeConsumerHandle& consumer) { … }

void WriteDataToProducer(
    mojo::ScopedDataPipeProducerHandle producer_handle,
    scoped_refptr<base::RefCountedData<Vector<uint8_t>>> data) { … }

}  // namespace

FileSystemAccessFileDelegate* FileSystemAccessFileDelegate::CreateForIncognito(
    ExecutionContext* context,
    mojo::PendingRemote<mojom::blink::FileSystemAccessFileDelegateHost>
        incognito_file_remote) { … }

FileSystemAccessIncognitoFileDelegate::FileSystemAccessIncognitoFileDelegate(
    ExecutionContext* context,
    mojo::PendingRemote<mojom::blink::FileSystemAccessFileDelegateHost>
        incognito_file_remote,
    base::PassKey<FileSystemAccessFileDelegate>)
    : … { … }

void FileSystemAccessIncognitoFileDelegate::Trace(Visitor* visitor) const { … }

base::FileErrorOr<int> FileSystemAccessIncognitoFileDelegate::Read(
    int64_t offset,
    base::span<uint8_t> data) { … }

base::FileErrorOr<int> FileSystemAccessIncognitoFileDelegate::Write(
    int64_t offset,
    const base::span<uint8_t> data) { … }

base::FileErrorOr<int64_t> FileSystemAccessIncognitoFileDelegate::GetLength() { … }

base::FileErrorOr<bool> FileSystemAccessIncognitoFileDelegate::SetLength(
    int64_t length) { … }

bool FileSystemAccessIncognitoFileDelegate::Flush() { … }

void FileSystemAccessIncognitoFileDelegate::Close() { … }

}  // namespace blink
chromium/third_party/blink/renderer/modules/file_system_access/file_system_access_incognito_file_delegate.cc
