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fs.mitm: lazily initialize sd-romfs metadata

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This commit is contained in:
Michael Scire 2019-12-30 03:23:40 -08:00
parent 2ae298de24
commit d0404f3cc9
3 changed files with 91 additions and 11 deletions
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19
stratosphere/ams_mitm/source/fs_mitm/fs_mitm_service.cpp
View file

@ -28,6 +28,7 @@ namespace ams::mitm::fs {
constexpr const char AtmosphereHblWebContentDir[] = "/atmosphere/hbl_html/";
os::Mutex g_data_storage_lock;
os::Mutex g_storage_cache_lock;
std::unordered_map<u64, std::weak_ptr<IStorageInterface>> g_storage_cache;
@ -236,6 +237,9 @@ namespace ams::mitm::fs {
R_TRY(fsOpenDataStorageByCurrentProcessFwd(this->forward_service.get(), &data_storage));
const sf::cmif::DomainObjectId target_object_id{serviceGetObjectId(&data_storage.s)};
/* Get a scoped lock. */
std::scoped_lock lk(g_data_storage_lock);
/* Try to get a storage from the cache. */
{
std::shared_ptr<IStorageInterface> cached_storage = GetStorageCacheEntry(this->client_info.program_id);
@ -252,10 +256,12 @@ namespace ams::mitm::fs {
/* Create the layered storage. */
FsFile data_file;
if (R_SUCCEEDED(OpenAtmosphereSdFile(&data_file, this->client_info.program_id, "romfs.bin", OpenMode_Read))) {
auto *layered_storage = new LayeredRomfsStorage(std::make_unique<ReadOnlyStorageAdapter>(new RemoteStorage(data_storage)), std::make_unique<ReadOnlyStorageAdapter>(new FileStorage(new RemoteFile(data_file))), this->client_info.program_id);
auto layered_storage = std::make_shared<LayeredRomfsStorage>(std::make_unique<ReadOnlyStorageAdapter>(new RemoteStorage(data_storage)), std::make_unique<ReadOnlyStorageAdapter>(new FileStorage(new RemoteFile(data_file))), this->client_info.program_id);
layered_storage->BeginInitialize();
new_storage_intf = std::make_shared<IStorageInterface>(layered_storage);
} else {
auto *layered_storage = new LayeredRomfsStorage(std::make_unique<ReadOnlyStorageAdapter>(new RemoteStorage(data_storage)), nullptr, this->client_info.program_id);
auto layered_storage = std::make_shared<LayeredRomfsStorage>(std::make_unique<ReadOnlyStorageAdapter>(new RemoteStorage(data_storage)), nullptr, this->client_info.program_id);
layered_storage->BeginInitialize();
new_storage_intf = std::make_shared<IStorageInterface>(layered_storage);
}
@ -278,6 +284,9 @@ namespace ams::mitm::fs {
R_TRY(fsOpenDataStorageByDataIdFwd(this->forward_service.get(), &data_storage, static_cast<u64>(data_id), static_cast<NcmStorageId>(storage_id)));
const sf::cmif::DomainObjectId target_object_id{serviceGetObjectId(&data_storage.s)};
/* Get a scoped lock. */
std::scoped_lock lk(g_data_storage_lock);
/* Try to get a storage from the cache. */
{
std::shared_ptr<IStorageInterface> cached_storage = GetStorageCacheEntry(data_id);
@ -294,10 +303,12 @@ namespace ams::mitm::fs {
/* Create the layered storage. */
FsFile data_file;
if (R_SUCCEEDED(OpenAtmosphereSdFile(&data_file, data_id, "romfs.bin", OpenMode_Read))) {
auto *layered_storage = new LayeredRomfsStorage(std::make_unique<ReadOnlyStorageAdapter>(new RemoteStorage(data_storage)), std::make_unique<ReadOnlyStorageAdapter>(new FileStorage(new RemoteFile(data_file))), data_id);
auto layered_storage = std::make_shared<LayeredRomfsStorage>(std::make_unique<ReadOnlyStorageAdapter>(new RemoteStorage(data_storage)), std::make_unique<ReadOnlyStorageAdapter>(new FileStorage(new RemoteFile(data_file))), data_id);
layered_storage->BeginInitialize();
new_storage_intf = std::make_shared<IStorageInterface>(layered_storage);
} else {
auto *layered_storage = new LayeredRomfsStorage(std::make_unique<ReadOnlyStorageAdapter>(new RemoteStorage(data_storage)), nullptr, data_id);
auto layered_storage = std::make_shared<LayeredRomfsStorage>(std::make_unique<ReadOnlyStorageAdapter>(new RemoteStorage(data_storage)), nullptr, data_id);
layered_storage->BeginInitialize();
new_storage_intf = std::make_shared<IStorageInterface>(layered_storage);
}

71
stratosphere/ams_mitm/source/fs_mitm/fsmitm_layered_romfs_storage.cpp
View file

@ -20,9 +20,62 @@
namespace ams::mitm::fs {
namespace {
os::Mutex g_mq_lock;
bool g_started_req_thread;
os::MessageQueue g_req_mq(1);
os::MessageQueue g_ack_mq(1);
void RomfsInitializerThreadFunction(void *arg) {
while (true) {
uintptr_t storage_uptr = 0;
g_req_mq.Receive(&storage_uptr);
std::shared_ptr<LayeredRomfsStorage> layered_storage = reinterpret_cast<LayeredRomfsStorage *>(storage_uptr)->GetShared();
g_ack_mq.Send(storage_uptr);
layered_storage->InitializeImpl();
}
}
constexpr size_t RomfsInitializerThreadStackSize = 0x8000;
constexpr int RomfsInitializerThreadPriority = 44;
os::StaticThread<RomfsInitializerThreadStackSize> g_romfs_initializer_thread(&RomfsInitializerThreadFunction, nullptr, RomfsInitializerThreadPriority);
void RequestInitializeStorage(uintptr_t storage_uptr) {
std::scoped_lock lk(g_mq_lock);
if (!g_started_req_thread) {
R_ASSERT(g_romfs_initializer_thread.Start());
g_started_req_thread = true;
}
g_req_mq.Send(storage_uptr);
uintptr_t ack = 0;
g_ack_mq.Receive(&ack);
AMS_ASSERT(ack == storage_uptr);
}
}
using namespace ams::fs;
LayeredRomfsStorage::LayeredRomfsStorage(std::unique_ptr<IStorage> s_r, std::unique_ptr<IStorage> f_r, ncm::ProgramId pr_id) : storage_romfs(std::move(s_r)), file_romfs(std::move(f_r)), program_id(std::move(pr_id)) {
LayeredRomfsStorage::LayeredRomfsStorage(std::unique_ptr<IStorage> s_r, std::unique_ptr<IStorage> f_r, ncm::ProgramId pr_id) : storage_romfs(std::move(s_r)), file_romfs(std::move(f_r)), initialize_event(false, false), program_id(std::move(pr_id)), is_initialized(false), started_initialize(false) {
/* ... */
}
LayeredRomfsStorage::~LayeredRomfsStorage() {
for (size_t i = 0; i < this->source_infos.size(); i++) {
this->source_infos[i].Cleanup();
}
}
void LayeredRomfsStorage::BeginInitialize() {
AMS_ASSERT(!this->started_initialize);
RequestInitializeStorage(reinterpret_cast<uintptr_t>(this));
this->started_initialize = true;
}
void LayeredRomfsStorage::InitializeImpl() {
/* Build new virtual romfs. */
romfs::Builder builder(this->program_id);
@ -37,12 +90,9 @@ namespace ams::mitm::fs {
}
builder.Build(&this->source_infos);
}
LayeredRomfsStorage::~LayeredRomfsStorage() {
for (size_t i = 0; i < this->source_infos.size(); i++) {
this->source_infos[i].Cleanup();
}
this->is_initialized = true;
this->initialize_event.Signal();
}
Result LayeredRomfsStorage::Read(s64 offset, void *buffer, size_t size) {
@ -50,6 +100,10 @@ namespace ams::mitm::fs {
R_UNLESS(size >= 0, fs::ResultInvalidSize());
R_UNLESS(size > 0, ResultSuccess());
/* Ensure we're initialized. */
if (!this->is_initialized) {
this->initialize_event.Wait();
}
/* Validate offset/size. */
const s64 virt_size = this->GetSize();
@ -123,6 +177,11 @@ namespace ams::mitm::fs {
}
Result LayeredRomfsStorage::GetSize(s64 *out_size) {
/* Ensure we're initialized. */
if (!this->is_initialized) {
this->initialize_event.Wait();
}
*out_size = this->GetSize();
return ResultSuccess();
}

12
stratosphere/ams_mitm/source/fs_mitm/fsmitm_layered_romfs_storage.hpp
View file

@ -20,12 +20,15 @@
namespace ams::mitm::fs {
class LayeredRomfsStorage : public ams::fs::IStorage {
class LayeredRomfsStorage : public std::enable_shared_from_this<LayeredRomfsStorage>, public ams::fs::IStorage {
private:
std::vector<romfs::SourceInfo> source_infos;
std::unique_ptr<ams::fs::IStorage> storage_romfs;
std::unique_ptr<ams::fs::IStorage> file_romfs;
os::Event initialize_event;
ncm::ProgramId program_id;
bool is_initialized;
bool started_initialize;
protected:
inline s64 GetSize() const {
const auto &back = this->source_infos.back();
@ -35,6 +38,13 @@ namespace ams::mitm::fs {
LayeredRomfsStorage(std::unique_ptr<ams::fs::IStorage> s_r, std::unique_ptr<ams::fs::IStorage> f_r, ncm::ProgramId pr_id);
virtual ~LayeredRomfsStorage();
void BeginInitialize();
void InitializeImpl();
std::shared_ptr<LayeredRomfsStorage> GetShared() {
return this->shared_from_this();
}
virtual Result Read(s64 offset, void *buffer, size_t size) override;
virtual Result GetSize(s64 *out_size) override;
virtual Result Flush() override;