| /* |
| * Copyright (C) 2017-2018 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| * THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "PersistencyUtils.h" |
| |
| #include "Logging.h" |
| #include <WebCore/SharedBuffer.h> |
| #include <wtf/FileSystem.h> |
| #include <wtf/RunLoop.h> |
| |
| namespace WebKit { |
| |
| using namespace WebCore; |
| |
| std::unique_ptr<KeyedDecoder> createForFile(const String& path) |
| { |
| ASSERT(!RunLoop::isMain()); |
| |
| auto handle = FileSystem::openAndLockFile(path, FileSystem::FileOpenMode::Read); |
| if (handle == FileSystem::invalidPlatformFileHandle) |
| return nullptr; |
| |
| long long fileSize = 0; |
| if (!FileSystem::getFileSize(handle, fileSize) || !fileSize) { |
| FileSystem::unlockAndCloseFile(handle); |
| return nullptr; |
| } |
| |
| size_t bytesToRead; |
| if (!WTF::convertSafely(fileSize, bytesToRead)) { |
| FileSystem::unlockAndCloseFile(handle); |
| return nullptr; |
| } |
| |
| Vector<char> buffer(bytesToRead); |
| size_t totalBytesRead = FileSystem::readFromFile(handle, buffer.data(), buffer.size()); |
| |
| FileSystem::unlockAndCloseFile(handle); |
| |
| if (totalBytesRead != bytesToRead) |
| return nullptr; |
| |
| // FIXME: We should try to modify the constructor to pass &&. |
| return KeyedDecoder::decoder(reinterpret_cast<const uint8_t*>(buffer.data()), buffer.size()); |
| } |
| |
| void writeToDisk(std::unique_ptr<KeyedEncoder>&& encoder, String&& path) |
| { |
| ASSERT(!RunLoop::isMain()); |
| |
| auto rawData = encoder->finishEncoding(); |
| if (!rawData) |
| return; |
| |
| FileSystem::PlatformFileHandle handle = FileSystem::openAndLockFile(path, FileSystem::FileOpenMode::Write); |
| if (handle == FileSystem::invalidPlatformFileHandle) |
| return; |
| |
| auto writtenBytes = FileSystem::writeToFile(handle, rawData->data(), rawData->size()); |
| FileSystem::unlockAndCloseFile(handle); |
| |
| if (writtenBytes != static_cast<int64_t>(rawData->size())) |
| RELEASE_LOG_ERROR(DiskPersistency, "Disk persistency: We only wrote %d out of %zu bytes to disk", static_cast<unsigned>(writtenBytes), rawData->size()); |
| } |
| |
| } // namespace WebKit |