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/*
* 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 buffer = FileSystem::readEntireFile(path);
if (!buffer)
return nullptr;
return KeyedDecoder::decoder(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::Truncate);
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
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