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suyu/src/core/hle/service/filesystem/filesystem.cpp

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// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <utility>
#include "common/assert.h"
#include "common/file_util.h"
#include "core/core.h"
#include "core/file_sys/bis_factory.h"
#include "core/file_sys/control_metadata.h"
#include "core/file_sys/errors.h"
#include "core/file_sys/mode.h"
#include "core/file_sys/partition_filesystem.h"
#include "core/file_sys/patch_manager.h"
#include "core/file_sys/registered_cache.h"
#include "core/file_sys/romfs_factory.h"
#include "core/file_sys/savedata_factory.h"
#include "core/file_sys/sdmc_factory.h"
#include "core/file_sys/vfs.h"
#include "core/file_sys/vfs_offset.h"
#include "core/hle/kernel/process.h"
#include "core/hle/service/filesystem/filesystem.h"
#include "core/hle/service/filesystem/fsp_ldr.h"
#include "core/hle/service/filesystem/fsp_pr.h"
#include "core/hle/service/filesystem/fsp_srv.h"
#include "core/loader/loader.h"
namespace Service::FileSystem {
// Size of emulated sd card free space, reported in bytes.
// Just using 32GB because thats reasonable
// TODO(DarkLordZach): Eventually make this configurable in settings.
constexpr u64 EMULATED_SD_REPORTED_SIZE = 32000000000;
// A default size for normal/journal save data size if application control metadata cannot be found.
// This should be large enough to satisfy even the most extreme requirements (~4.2GB)
constexpr u64 SUFFICIENT_SAVE_DATA_SIZE = 0xF0000000;
static FileSys::VirtualDir GetDirectoryRelativeWrapped(FileSys::VirtualDir base,
std::string_view dir_name_) {
std::string dir_name(FileUtil::SanitizePath(dir_name_));
if (dir_name.empty() || dir_name == "." || dir_name == "/" || dir_name == "\\")
return base;
return base->GetDirectoryRelative(dir_name);
}
VfsDirectoryServiceWrapper::VfsDirectoryServiceWrapper(FileSys::VirtualDir backing_)
: backing(std::move(backing_)) {}
VfsDirectoryServiceWrapper::~VfsDirectoryServiceWrapper() = default;
std::string VfsDirectoryServiceWrapper::GetName() const {
return backing->GetName();
}
ResultCode VfsDirectoryServiceWrapper::CreateFile(const std::string& path_, u64 size) const {
std::string path(FileUtil::SanitizePath(path_));
auto dir = GetDirectoryRelativeWrapped(backing, FileUtil::GetParentPath(path));
auto file = dir->CreateFile(FileUtil::GetFilename(path));
if (file == nullptr) {
// TODO(DarkLordZach): Find a better error code for this
return ResultCode(-1);
}
if (!file->Resize(size)) {
// TODO(DarkLordZach): Find a better error code for this
return ResultCode(-1);
}
return RESULT_SUCCESS;
}
ResultCode VfsDirectoryServiceWrapper::DeleteFile(const std::string& path_) const {
std::string path(FileUtil::SanitizePath(path_));
if (path.empty()) {
// TODO(DarkLordZach): Why do games call this and what should it do? Works as is but...
return RESULT_SUCCESS;
}
auto dir = GetDirectoryRelativeWrapped(backing, FileUtil::GetParentPath(path));
if (dir->GetFile(FileUtil::GetFilename(path)) == nullptr) {
return FileSys::ERROR_PATH_NOT_FOUND;
}
if (!dir->DeleteFile(FileUtil::GetFilename(path))) {
// TODO(DarkLordZach): Find a better error code for this
return ResultCode(-1);
}
return RESULT_SUCCESS;
}
ResultCode VfsDirectoryServiceWrapper::CreateDirectory(const std::string& path_) const {
std::string path(FileUtil::SanitizePath(path_));
auto dir = GetDirectoryRelativeWrapped(backing, FileUtil::GetParentPath(path));
if (dir == nullptr && FileUtil::GetFilename(FileUtil::GetParentPath(path)).empty())
dir = backing;
auto new_dir = dir->CreateSubdirectory(FileUtil::GetFilename(path));
if (new_dir == nullptr) {
// TODO(DarkLordZach): Find a better error code for this
return ResultCode(-1);
}
return RESULT_SUCCESS;
}
ResultCode VfsDirectoryServiceWrapper::DeleteDirectory(const std::string& path_) const {
std::string path(FileUtil::SanitizePath(path_));
auto dir = GetDirectoryRelativeWrapped(backing, FileUtil::GetParentPath(path));
if (!dir->DeleteSubdirectory(FileUtil::GetFilename(path))) {
// TODO(DarkLordZach): Find a better error code for this
return ResultCode(-1);
}
return RESULT_SUCCESS;
}
ResultCode VfsDirectoryServiceWrapper::DeleteDirectoryRecursively(const std::string& path_) const {
std::string path(FileUtil::SanitizePath(path_));
auto dir = GetDirectoryRelativeWrapped(backing, FileUtil::GetParentPath(path));
if (!dir->DeleteSubdirectoryRecursive(FileUtil::GetFilename(path))) {
// TODO(DarkLordZach): Find a better error code for this
return ResultCode(-1);
}
return RESULT_SUCCESS;
}
ResultCode VfsDirectoryServiceWrapper::CleanDirectoryRecursively(const std::string& path) const {
const std::string sanitized_path(FileUtil::SanitizePath(path));
auto dir = GetDirectoryRelativeWrapped(backing, FileUtil::GetParentPath(sanitized_path));
if (!dir->CleanSubdirectoryRecursive(FileUtil::GetFilename(sanitized_path))) {
// TODO(DarkLordZach): Find a better error code for this
return ResultCode(-1);
}
return RESULT_SUCCESS;
}
ResultCode VfsDirectoryServiceWrapper::RenameFile(const std::string& src_path_,
const std::string& dest_path_) const {
std::string src_path(FileUtil::SanitizePath(src_path_));
std::string dest_path(FileUtil::SanitizePath(dest_path_));
auto src = backing->GetFileRelative(src_path);
if (FileUtil::GetParentPath(src_path) == FileUtil::GetParentPath(dest_path)) {
// Use more-optimized vfs implementation rename.
if (src == nullptr)
return FileSys::ERROR_PATH_NOT_FOUND;
if (!src->Rename(FileUtil::GetFilename(dest_path))) {
// TODO(DarkLordZach): Find a better error code for this
return ResultCode(-1);
}
return RESULT_SUCCESS;
}
// Move by hand -- TODO(DarkLordZach): Optimize
auto c_res = CreateFile(dest_path, src->GetSize());
if (c_res != RESULT_SUCCESS)
return c_res;
auto dest = backing->GetFileRelative(dest_path);
ASSERT_MSG(dest != nullptr, "Newly created file with success cannot be found.");
ASSERT_MSG(dest->WriteBytes(src->ReadAllBytes()) == src->GetSize(),
"Could not write all of the bytes but everything else has succeded.");
if (!src->GetContainingDirectory()->DeleteFile(FileUtil::GetFilename(src_path))) {
// TODO(DarkLordZach): Find a better error code for this
return ResultCode(-1);
}
return RESULT_SUCCESS;
}
ResultCode VfsDirectoryServiceWrapper::RenameDirectory(const std::string& src_path_,
const std::string& dest_path_) const {
std::string src_path(FileUtil::SanitizePath(src_path_));
std::string dest_path(FileUtil::SanitizePath(dest_path_));
auto src = GetDirectoryRelativeWrapped(backing, src_path);
if (FileUtil::GetParentPath(src_path) == FileUtil::GetParentPath(dest_path)) {
// Use more-optimized vfs implementation rename.
if (src == nullptr)
return FileSys::ERROR_PATH_NOT_FOUND;
if (!src->Rename(FileUtil::GetFilename(dest_path))) {
// TODO(DarkLordZach): Find a better error code for this
return ResultCode(-1);
}
return RESULT_SUCCESS;
}
// TODO(DarkLordZach): Implement renaming across the tree (move).
ASSERT_MSG(false,
"Could not rename directory with path \"{}\" to new path \"{}\" because parent dirs "
"don't match -- UNIMPLEMENTED",
src_path, dest_path);
// TODO(DarkLordZach): Find a better error code for this
return ResultCode(-1);
}
ResultVal<FileSys::VirtualFile> VfsDirectoryServiceWrapper::OpenFile(const std::string& path_,
FileSys::Mode mode) const {
std::string path(FileUtil::SanitizePath(path_));
auto npath = path;
while (npath.size() > 0 && (npath[0] == '/' || npath[0] == '\\'))
npath = npath.substr(1);
auto file = backing->GetFileRelative(npath);
if (file == nullptr)
return FileSys::ERROR_PATH_NOT_FOUND;
if (mode == FileSys::Mode::Append) {
return MakeResult<FileSys::VirtualFile>(
std::make_shared<FileSys::OffsetVfsFile>(file, 0, file->GetSize()));
}
return MakeResult<FileSys::VirtualFile>(file);
}
ResultVal<FileSys::VirtualDir> VfsDirectoryServiceWrapper::OpenDirectory(const std::string& path_) {
std::string path(FileUtil::SanitizePath(path_));
auto dir = GetDirectoryRelativeWrapped(backing, path);
if (dir == nullptr) {
// TODO(DarkLordZach): Find a better error code for this
return FileSys::ERROR_PATH_NOT_FOUND;
}
return MakeResult(dir);
}
u64 VfsDirectoryServiceWrapper::GetFreeSpaceSize() const {
if (backing->IsWritable())
return EMULATED_SD_REPORTED_SIZE;
return 0;
}
ResultVal<FileSys::EntryType> VfsDirectoryServiceWrapper::GetEntryType(
const std::string& path_) const {
std::string path(FileUtil::SanitizePath(path_));
auto dir = GetDirectoryRelativeWrapped(backing, FileUtil::GetParentPath(path));
if (dir == nullptr)
return FileSys::ERROR_PATH_NOT_FOUND;
auto filename = FileUtil::GetFilename(path);
// TODO(Subv): Some games use the '/' path, find out what this means.
if (filename.empty())
return MakeResult(FileSys::EntryType::Directory);
if (dir->GetFile(filename) != nullptr)
return MakeResult(FileSys::EntryType::File);
if (dir->GetSubdirectory(filename) != nullptr)
return MakeResult(FileSys::EntryType::Directory);
return FileSys::ERROR_PATH_NOT_FOUND;
}
/**
* Map of registered file systems, identified by type. Once an file system is registered here, it
* is never removed until UnregisterFileSystems is called.
*/
static std::unique_ptr<FileSys::RomFSFactory> romfs_factory;
static std::unique_ptr<FileSys::SaveDataFactory> save_data_factory;
static std::unique_ptr<FileSys::SDMCFactory> sdmc_factory;
static std::unique_ptr<FileSys::BISFactory> bis_factory;
ResultCode RegisterRomFS(std::unique_ptr<FileSys::RomFSFactory>&& factory) {
ASSERT_MSG(romfs_factory == nullptr, "Tried to register a second RomFS");
romfs_factory = std::move(factory);
LOG_DEBUG(Service_FS, "Registered RomFS");
return RESULT_SUCCESS;
}
ResultCode RegisterSaveData(std::unique_ptr<FileSys::SaveDataFactory>&& factory) {
ASSERT_MSG(romfs_factory == nullptr, "Tried to register a second save data");
save_data_factory = std::move(factory);
LOG_DEBUG(Service_FS, "Registered save data");
return RESULT_SUCCESS;
}
ResultCode RegisterSDMC(std::unique_ptr<FileSys::SDMCFactory>&& factory) {
ASSERT_MSG(sdmc_factory == nullptr, "Tried to register a second SDMC");
sdmc_factory = std::move(factory);
LOG_DEBUG(Service_FS, "Registered SDMC");
return RESULT_SUCCESS;
}
ResultCode RegisterBIS(std::unique_ptr<FileSys::BISFactory>&& factory) {
ASSERT_MSG(bis_factory == nullptr, "Tried to register a second BIS");
bis_factory = std::move(factory);
LOG_DEBUG(Service_FS, "Registered BIS");
return RESULT_SUCCESS;
}
void SetPackedUpdate(FileSys::VirtualFile update_raw) {
LOG_TRACE(Service_FS, "Setting packed update for romfs");
if (romfs_factory == nullptr)
return;
romfs_factory->SetPackedUpdate(std::move(update_raw));
}
ResultVal<FileSys::VirtualFile> OpenRomFSCurrentProcess() {
LOG_TRACE(Service_FS, "Opening RomFS for current process");
if (romfs_factory == nullptr) {
// TODO(bunnei): Find a better error code for this
return ResultCode(-1);
}
return romfs_factory->OpenCurrentProcess();
}
ResultVal<FileSys::VirtualFile> OpenRomFS(u64 title_id, FileSys::StorageId storage_id,
FileSys::ContentRecordType type) {
LOG_TRACE(Service_FS, "Opening RomFS for title_id={:016X}, storage_id={:02X}, type={:02X}",
title_id, static_cast<u8>(storage_id), static_cast<u8>(type));
if (romfs_factory == nullptr) {
// TODO(bunnei): Find a better error code for this
return ResultCode(-1);
}
return romfs_factory->Open(title_id, storage_id, type);
}
ResultVal<FileSys::VirtualDir> OpenSaveData(FileSys::SaveDataSpaceId space,
FileSys::SaveDataDescriptor save_struct) {
LOG_TRACE(Service_FS, "Opening Save Data for space_id={:01X}, save_struct={}",
static_cast<u8>(space), save_struct.DebugInfo());
if (save_data_factory == nullptr) {
return FileSys::ERROR_ENTITY_NOT_FOUND;
}
return save_data_factory->Open(space, save_struct);
}
ResultVal<FileSys::VirtualDir> OpenSaveDataSpace(FileSys::SaveDataSpaceId space) {
LOG_TRACE(Service_FS, "Opening Save Data Space for space_id={:01X}", static_cast<u8>(space));
if (save_data_factory == nullptr) {
return FileSys::ERROR_ENTITY_NOT_FOUND;
}
return MakeResult(save_data_factory->GetSaveDataSpaceDirectory(space));
}
ResultVal<FileSys::VirtualDir> OpenSDMC() {
LOG_TRACE(Service_FS, "Opening SDMC");
if (sdmc_factory == nullptr) {
return FileSys::ERROR_SD_CARD_NOT_FOUND;
}
return sdmc_factory->Open();
}
FileSys::SaveDataSize ReadSaveDataSize(FileSys::SaveDataType type, u64 title_id, u128 user_id) {
if (save_data_factory == nullptr) {
return {0, 0};
}
const auto value = save_data_factory->ReadSaveDataSize(type, title_id, user_id);
if (value.normal == 0 && value.journal == 0) {
FileSys::SaveDataSize new_size{SUFFICIENT_SAVE_DATA_SIZE, SUFFICIENT_SAVE_DATA_SIZE};
FileSys::NACP nacp;
const auto res = Core::System::GetInstance().GetAppLoader().ReadControlData(nacp);
if (res != Loader::ResultStatus::Success) {
FileSys::PatchManager pm{Core::CurrentProcess()->GetTitleID()};
auto [nacp_unique, discard] = pm.GetControlMetadata();
if (nacp_unique != nullptr) {
new_size = {nacp_unique->GetDefaultNormalSaveSize(),
nacp_unique->GetDefaultJournalSaveSize()};
}
} else {
new_size = {nacp.GetDefaultNormalSaveSize(), nacp.GetDefaultJournalSaveSize()};
}
WriteSaveDataSize(type, title_id, user_id, new_size);
return new_size;
}
return value;
}
void WriteSaveDataSize(FileSys::SaveDataType type, u64 title_id, u128 user_id,
FileSys::SaveDataSize new_value) {
if (save_data_factory != nullptr)
save_data_factory->WriteSaveDataSize(type, title_id, user_id, new_value);
}
FileSys::RegisteredCacheUnion GetUnionContents() {
return FileSys::RegisteredCacheUnion{
{GetSystemNANDContents(), GetUserNANDContents(), GetSDMCContents()}};
}
FileSys::RegisteredCache* GetSystemNANDContents() {
LOG_TRACE(Service_FS, "Opening System NAND Contents");
if (bis_factory == nullptr)
return nullptr;
return bis_factory->GetSystemNANDContents();
}
FileSys::RegisteredCache* GetUserNANDContents() {
LOG_TRACE(Service_FS, "Opening User NAND Contents");
if (bis_factory == nullptr)
return nullptr;
return bis_factory->GetUserNANDContents();
}
FileSys::RegisteredCache* GetSDMCContents() {
LOG_TRACE(Service_FS, "Opening SDMC Contents");
if (sdmc_factory == nullptr)
return nullptr;
return sdmc_factory->GetSDMCContents();
}
FileSys::VirtualDir GetModificationLoadRoot(u64 title_id) {
LOG_TRACE(Service_FS, "Opening mod load root for tid={:016X}", title_id);
if (bis_factory == nullptr)
return nullptr;
return bis_factory->GetModificationLoadRoot(title_id);
}
FileSys::VirtualDir GetModificationDumpRoot(u64 title_id) {
LOG_TRACE(Service_FS, "Opening mod dump root for tid={:016X}", title_id);
if (bis_factory == nullptr)
return nullptr;
return bis_factory->GetModificationDumpRoot(title_id);
}
void CreateFactories(FileSys::VfsFilesystem& vfs, bool overwrite) {
if (overwrite) {
bis_factory = nullptr;
save_data_factory = nullptr;
sdmc_factory = nullptr;
}
auto nand_directory = vfs.OpenDirectory(FileUtil::GetUserPath(FileUtil::UserPath::NANDDir),
FileSys::Mode::ReadWrite);
auto sd_directory = vfs.OpenDirectory(FileUtil::GetUserPath(FileUtil::UserPath::SDMCDir),
FileSys::Mode::ReadWrite);
auto load_directory = vfs.OpenDirectory(FileUtil::GetUserPath(FileUtil::UserPath::LoadDir),
FileSys::Mode::ReadWrite);
auto dump_directory = vfs.OpenDirectory(FileUtil::GetUserPath(FileUtil::UserPath::DumpDir),
FileSys::Mode::ReadWrite);
if (bis_factory == nullptr) {
bis_factory =
std::make_unique<FileSys::BISFactory>(nand_directory, load_directory, dump_directory);
}
if (save_data_factory == nullptr) {
save_data_factory = std::make_unique<FileSys::SaveDataFactory>(std::move(nand_directory));
}
if (sdmc_factory == nullptr) {
sdmc_factory = std::make_unique<FileSys::SDMCFactory>(std::move(sd_directory));
}
}
void InstallInterfaces(SM::ServiceManager& service_manager, FileSys::VfsFilesystem& vfs) {
romfs_factory = nullptr;
CreateFactories(vfs, false);
std::make_shared<FSP_LDR>()->InstallAsService(service_manager);
std::make_shared<FSP_PR>()->InstallAsService(service_manager);
std::make_shared<FSP_SRV>()->InstallAsService(service_manager);
}
} // namespace Service::FileSystem
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