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Merge pull request #4191 from nextcloud/bugfix/cfapiDehydrateProperly

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use proper API to dehydrate a placeholder file
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allexzander 2022-01-24 16:50:57 +02:00 committed by GitHub
commit fbc89a3149
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3 changed files with 43 additions and 17 deletions
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32
src/libsync/vfs/cfapi/cfapiwrapper.cpp
View file

@ -740,6 +740,38 @@ OCC::Result<OCC::Vfs::ConvertToPlaceholderResult, QString> OCC::CfApiWrapper::up
return OCC::Vfs::ConvertToPlaceholderResult::Ok;
}
OCC::Result<OCC::Vfs::ConvertToPlaceholderResult, QString> OCC::CfApiWrapper::dehydratePlaceholder(const FileHandle &handle, time_t modtime, qint64 size, const QByteArray &fileId)
{
Q_ASSERT(handle);
if (modtime <= 0) {
return {QString{"Could not update metadata due to invalid modification time for %1: %2"}.arg(pathForHandle(handle)).arg(modtime)};
}
const auto info = findPlaceholderInfo(handle);
if (!info) {
return { "Can't update non existing placeholder info" };
}
const auto fileIdentity = QString::fromUtf8(fileId).toStdWString();
const auto fileIdentitySize = (fileIdentity.length() + 1) * sizeof(wchar_t);
CF_FILE_RANGE dehydrationRange;
dehydrationRange.StartingOffset.QuadPart = 0;
dehydrationRange.Length.QuadPart = size;
const qint64 result = CfUpdatePlaceholder(handle.get(), nullptr,
fileIdentity.data(), sizeToDWORD(fileIdentitySize),
&dehydrationRange, 1, CF_UPDATE_FLAG_MARK_IN_SYNC, nullptr, nullptr);
if (result != S_OK) {
qCWarning(lcCfApiWrapper) << "Couldn't update placeholder info for" << pathForHandle(handle) << ":" << QString::fromWCharArray(_com_error(result).ErrorMessage());
return { "Couldn't update placeholder info" };
}
return OCC::Vfs::ConvertToPlaceholderResult::Ok;
}
OCC::Result<OCC::Vfs::ConvertToPlaceholderResult, QString> OCC::CfApiWrapper::convertToPlaceholder(const FileHandle &handle, time_t modtime, qint64 size, const QByteArray &fileId, const QString &replacesPath)
{
Q_UNUSED(modtime);

1
src/libsync/vfs/cfapi/cfapiwrapper.h
View file

@ -94,6 +94,7 @@ NEXTCLOUD_CFAPI_EXPORT Result<OCC::Vfs::ConvertToPlaceholderResult, QString> set
NEXTCLOUD_CFAPI_EXPORT Result<void, QString> createPlaceholderInfo(const QString &path, time_t modtime, qint64 size, const QByteArray &fileId);
NEXTCLOUD_CFAPI_EXPORT Result<OCC::Vfs::ConvertToPlaceholderResult, QString> updatePlaceholderInfo(const FileHandle &handle, time_t modtime, qint64 size, const QByteArray &fileId, const QString &replacesPath = QString());
NEXTCLOUD_CFAPI_EXPORT Result<OCC::Vfs::ConvertToPlaceholderResult, QString> convertToPlaceholder(const FileHandle &handle, time_t modtime, qint64 size, const QByteArray &fileId, const QString &replacesPath);
NEXTCLOUD_CFAPI_EXPORT Result<OCC::Vfs::ConvertToPlaceholderResult, QString> dehydratePlaceholder(const FileHandle &handle, time_t modtime, qint64 size, const QByteArray &fileId);
}

27
src/libsync/vfs/cfapi/vfs_cfapi.cpp
View file

@ -132,26 +132,19 @@ Result<void, QString> VfsCfApi::createPlaceholder(const SyncFileItem &item)
Result<void, QString> VfsCfApi::dehydratePlaceholder(const SyncFileItem &item)
{
const auto previousPin = pinState(item._file);
if (!FileSystem::remove(_setupParams.filesystemPath + item._file)) {
return QStringLiteral("Couldn't remove %1 to fulfill dehydration").arg(item._file);
}
const auto r = createPlaceholder(item);
if (!r) {
return r;
}
if (previousPin) {
if (*previousPin == PinState::AlwaysLocal) {
setPinState(item._file, PinState::Unspecified);
const auto localPath = QDir::toNativeSeparators(_setupParams.filesystemPath + item._file);
const auto handle = cfapi::handleForPath(localPath);
if (handle) {
auto result = cfapi::dehydratePlaceholder(handle, item._modtime, item._size, item._fileId);
if (result) {
return {};
} else {
setPinState(item._file, *previousPin);
return result.error();
}
} else {
qCWarning(lcCfApi) << "Couldn't update metadata for non existing file" << localPath;
return {QStringLiteral("Couldn't update metadata")};
}
return {};
}
Result<Vfs::ConvertToPlaceholderResult, QString> VfsCfApi::convertToPlaceholder(const QString &filename, const SyncFileItem &item, const QString &replacesFile)