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Commit since everything seems like it's working.

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J-D-K
2025-06-18 13:40:26 -04:00
parent 5cab0d505b
commit 62c5097d6d
34 changed files with 928 additions and 624 deletions
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86
source/fs/SaveMetaData.cpp
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@@ -11,71 +11,73 @@ namespace
constexpr std::string_view STRING_ERROR_TEMPLATE = "Error processing save meta for %016llX: %s";
} // namespace
void fs::create_save_meta_data(data::TitleInfo *titleInfo, const FsSaveDataInfo *saveInfo, fs::SaveMetaData &meta)
bool fs::fill_save_meta_data(const FsSaveDataInfo *saveInfo, fs::SaveMetaData &meta)
{
// I'm assuming this is opened and good because we're making a backup.
int64_t containerSize = 0;
if (!fslib::get_device_total_space(fs::DEFAULT_SAVE_ROOT, containerSize))
// This struct will allow us to fill this all out in one shot.
FsSaveDataExtraData extraData;
if (R_FAILED(fsReadSaveDataFileSystemExtraDataBySaveDataSpaceId(
&extraData,
sizeof(FsSaveDataExtraData),
static_cast<FsSaveDataSpaceId>(saveInfo->save_data_space_id),
saveInfo->save_data_id)))
{
// Log and fall back to file size count.
logger::log("Error getting save container's total size. Defaulting to file size count.");
containerSize = fs::get_directory_total_size(fs::DEFAULT_SAVE_ROOT);
logger::log("Error generating save meta: Failed to read save extra data!");
return false;
}
// Fill out the meta struct.
// Fill the struct.
meta = {.m_magic = fs::SAVE_META_MAGIC,
.m_applicationID = titleInfo->get_application_id(),
.m_saveType = saveInfo->save_data_type,
.m_saveRank = saveInfo->save_data_rank,
.m_saveSpaceID = saveInfo->save_data_space_id,
.m_saveDataSize = titleInfo->get_save_data_size(saveInfo->save_data_type),
.m_saveDataSizeMax = titleInfo->get_journal_size_max(saveInfo->save_data_type),
.m_journalSize = titleInfo->get_journal_size(saveInfo->save_data_type),
.m_journalSizeMax = titleInfo->get_journal_size_max(saveInfo->save_data_type),
.m_totalSaveSize = containerSize};
.m_revision = 0x00,
.m_applicationID = extraData.attr.application_id,
.m_accountID = extraData.attr.uid,
.m_systemSaveID = extraData.attr.system_save_data_id,
.m_saveDataType = extraData.attr.save_data_type,
.m_saveDataRank = extraData.attr.save_data_rank,
.m_saveDataIndex = extraData.attr.save_data_index,
.m_ownerID = extraData.owner_id,
.m_timestamp = extraData.timestamp,
.m_flags = extraData.flags,
.m_saveDataSize = extraData.data_size,
.m_journalSize = extraData.journal_size,
.m_commitID = extraData.commit_id};
// Should be good.
return true;
}
bool fs::process_save_meta_data(const FsSaveDataInfo *saveInfo, SaveMetaData &meta)
bool fs::process_save_meta_data(const FsSaveDataInfo *saveInfo, const SaveMetaData &meta)
{
if (meta.m_magic != SAVE_META_MAGIC || saveInfo->application_id != meta.m_applicationID)
// We're going to grab this quick and use this to compare.
FsSaveDataExtraData extraData = {0};
if (R_FAILED(fsReadSaveDataFileSystemExtraDataBySaveDataSpaceId(
&extraData,
sizeof(FsSaveDataExtraData),
static_cast<FsSaveDataSpaceId>(saveInfo->save_data_space_id),
saveInfo->save_data_id)))
{
logger::log(STRING_ERROR_TEMPLATE.data(), meta.m_applicationID, "Invalid magic or mismatched application ID.");
logger::log(STRING_ERROR_TEMPLATE.data(), saveInfo->application_id, fslib::get_error_string());
return false;
}
// To do: I'm assuming this function will only be called once the save container is already opened here...
int64_t totalSpace = 0;
if (!fslib::get_device_total_space(fs::DEFAULT_SAVE_ROOT, totalSpace))
{
logger::log(STRING_ERROR_TEMPLATE.data(), meta.m_applicationID, "get_device_total_space");
return false;
}
if (totalSpace >= meta.m_totalSaveSize)
{
// Gonna return true here, because there's no need to do anything to the container.
return true;
}
// First we need to temporarily close the save.
// We need to temporarily close the file system.
if (!fslib::close_file_system(fs::DEFAULT_SAVE_MOUNT))
{
logger::log(STRING_ERROR_TEMPLATE.data(), meta.m_applicationID, "close_file_system");
// We can't go any further at this point. You can't extend the save while it's open.
logger::log(STRING_ERROR_TEMPLATE.data(), saveInfo->application_id, fslib::get_error_string());
return false;
}
// This is where we finally extend the container. Using the large of the two journal sizes
if (!fs::extend_save_data(saveInfo, meta.m_totalSaveSize, meta.m_journalSizeMax))
// To do: Other checks.
if (extraData.data_size < meta.m_saveDataSize &&
!fs::extend_save_data(saveInfo, meta.m_saveDataSize, meta.m_journalSize))
{
logger::log(STRING_ERROR_TEMPLATE.data(), meta.m_applicationID, "Error extending save data container.");
// The fs::extend_save_data function should log the error that occurred.
return false;
}
// If this fails, we're super screwed.
// Now reopen it.
if (!fslib::open_save_data_with_save_info(fs::DEFAULT_SAVE_MOUNT, *saveInfo))
{
logger::log(STRING_ERROR_TEMPLATE.data(), meta.m_applicationID, "open_save_data");
logger::log(STRING_ERROR_TEMPLATE.data(), saveInfo->application_id, fslib::get_error_string());
return false;
}