service: bcat: Migrate and refractor service to new IPC

src/core/CMakeLists.txt

@@ -514,8 +514,21 @@ add_library(core STATIC
     hle/service/bcat/backend/backend.h
     hle/service/bcat/bcat.cpp
     hle/service/bcat/bcat.h
-    hle/service/bcat/bcat_module.cpp
+    hle/service/bcat/bcat_interface.cpp
-    hle/service/bcat/bcat_module.h
+    hle/service/bcat/bcat_interface.h
+    hle/service/bcat/bcat_result.h
+    hle/service/bcat/bcat_service.cpp
+    hle/service/bcat/bcat_service.h
+    hle/service/bcat/bcat_types.h
+    hle/service/bcat/bcat_util.h
+    hle/service/bcat/delivery_cache_directory_service.cpp
+    hle/service/bcat/delivery_cache_directory_service.h
+    hle/service/bcat/delivery_cache_file_service.cpp
+    hle/service/bcat/delivery_cache_file_service.h
+    hle/service/bcat/delivery_cache_progress_service.cpp
+    hle/service/bcat/delivery_cache_progress_service.h
+    hle/service/bcat/delivery_cache_storage_service.cpp
+    hle/service/bcat/delivery_cache_storage_service.h
     hle/service/bpc/bpc.cpp
     hle/service/bpc/bpc.h
     hle/service/btdrv/btdrv.cpp

src/core/hle/service/bcat/backend/backend.cpp

@@ -33,18 +33,18 @@ void ProgressServiceBackend::SetTotalSize(u64 size) {
 }
 
 void ProgressServiceBackend::StartConnecting() {
-    impl.status = DeliveryCacheProgressImpl::Status::Connecting;
+    impl.status = DeliveryCacheProgressStatus::Connecting;
     SignalUpdate();
 }
 
 void ProgressServiceBackend::StartProcessingDataList() {
-    impl.status = DeliveryCacheProgressImpl::Status::ProcessingDataList;
+    impl.status = DeliveryCacheProgressStatus::ProcessingDataList;
     SignalUpdate();
 }
 
 void ProgressServiceBackend::StartDownloadingFile(std::string_view dir_name,
                                                   std::string_view file_name, u64 file_size) {
-    impl.status = DeliveryCacheProgressImpl::Status::Downloading;
+    impl.status = DeliveryCacheProgressStatus::Downloading;
     impl.current_downloaded_bytes = 0;
     impl.current_total_bytes = file_size;
     std::memcpy(impl.current_directory.data(), dir_name.data(),
@@ -65,7 +65,7 @@ void ProgressServiceBackend::FinishDownloadingFile() {
 }
 
 void ProgressServiceBackend::CommitDirectory(std::string_view dir_name) {
-    impl.status = DeliveryCacheProgressImpl::Status::Committing;
+    impl.status = DeliveryCacheProgressStatus::Committing;
     impl.current_file.fill(0);
     impl.current_downloaded_bytes = 0;
     impl.current_total_bytes = 0;
@@ -76,7 +76,7 @@ void ProgressServiceBackend::CommitDirectory(std::string_view dir_name) {
 
 void ProgressServiceBackend::FinishDownload(Result result) {
     impl.total_downloaded_bytes = impl.total_bytes;
-    impl.status = DeliveryCacheProgressImpl::Status::Done;
+    impl.status = DeliveryCacheProgressStatus::Done;
     impl.result = result;
     SignalUpdate();
 }
@@ -85,15 +85,15 @@ void ProgressServiceBackend::SignalUpdate() {
     update_event->Signal();
 }
 
-Backend::Backend(DirectoryGetter getter) : dir_getter(std::move(getter)) {}
+BcatBackend::BcatBackend(DirectoryGetter getter) : dir_getter(std::move(getter)) {}
 
-Backend::~Backend() = default;
+BcatBackend::~BcatBackend() = default;
 
-NullBackend::NullBackend(DirectoryGetter getter) : Backend(std::move(getter)) {}
+NullBcatBackend::NullBcatBackend(DirectoryGetter getter) : BcatBackend(std::move(getter)) {}
 
-NullBackend::~NullBackend() = default;
+NullBcatBackend::~NullBcatBackend() = default;
 
-bool NullBackend::Synchronize(TitleIDVersion title, ProgressServiceBackend& progress) {
+bool NullBcatBackend::Synchronize(TitleIDVersion title, ProgressServiceBackend& progress) {
     LOG_DEBUG(Service_BCAT, "called, title_id={:016X}, build_id={:016X}", title.title_id,
               title.build_id);
 
@@ -101,7 +101,7 @@ bool NullBackend::Synchronize(TitleIDVersion title, ProgressServiceBackend& prog
     return true;
 }
 
-bool NullBackend::SynchronizeDirectory(TitleIDVersion title, std::string name,
+bool NullBcatBackend::SynchronizeDirectory(TitleIDVersion title, std::string name,
                                            ProgressServiceBackend& progress) {
     LOG_DEBUG(Service_BCAT, "called, title_id={:016X}, build_id={:016X}, name={}", title.title_id,
               title.build_id, name);
@@ -110,18 +110,18 @@ bool NullBackend::SynchronizeDirectory(TitleIDVersion title, std::string name,
     return true;
 }
 
-bool NullBackend::Clear(u64 title_id) {
+bool NullBcatBackend::Clear(u64 title_id) {
     LOG_DEBUG(Service_BCAT, "called, title_id={:016X}", title_id);
 
     return true;
 }
 
-void NullBackend::SetPassphrase(u64 title_id, const Passphrase& passphrase) {
+void NullBcatBackend::SetPassphrase(u64 title_id, const Passphrase& passphrase) {
     LOG_DEBUG(Service_BCAT, "called, title_id={:016X}, passphrase={}", title_id,
               Common::HexToString(passphrase));
 }
 
-std::optional<std::vector<u8>> NullBackend::GetLaunchParameter(TitleIDVersion title) {
+std::optional<std::vector<u8>> NullBcatBackend::GetLaunchParameter(TitleIDVersion title) {
     LOG_DEBUG(Service_BCAT, "called, title_id={:016X}, build_id={:016X}", title.title_id,
               title.build_id);
     return std::nullopt;

src/core/hle/service/bcat/backend/backend.h

@@ -10,6 +10,7 @@
 #include "common/common_types.h"
 #include "core/file_sys/vfs/vfs_types.h"
 #include "core/hle/result.h"
+#include "core/hle/service/bcat/bcat_types.h"
 #include "core/hle/service/kernel_helpers.h"
 
 namespace Core {
@@ -24,44 +25,6 @@ class KReadableEvent;
 
 namespace Service::BCAT {
 
-struct DeliveryCacheProgressImpl;
-
-using DirectoryGetter = std::function<FileSys::VirtualDir(u64)>;
-using Passphrase = std::array<u8, 0x20>;
-
-struct TitleIDVersion {
-    u64 title_id;
-    u64 build_id;
-};
-
-using DirectoryName = std::array<char, 0x20>;
-using FileName = std::array<char, 0x20>;
-
-struct DeliveryCacheProgressImpl {
-    enum class Status : s32 {
-        None = 0x0,
-        Queued = 0x1,
-        Connecting = 0x2,
-        ProcessingDataList = 0x3,
-        Downloading = 0x4,
-        Committing = 0x5,
-        Done = 0x9,
-    };
-
-    Status status;
-    Result result = ResultSuccess;
-    DirectoryName current_directory;
-    FileName current_file;
-    s64 current_downloaded_bytes; ///< Bytes downloaded on current file.
-    s64 current_total_bytes;      ///< Bytes total on current file.
-    s64 total_downloaded_bytes;   ///< Bytes downloaded on overall download.
-    s64 total_bytes;              ///< Bytes total on overall download.
-    INSERT_PADDING_BYTES(
-        0x198); ///< Appears to be unused in official code, possibly reserved for future use.
-};
-static_assert(sizeof(DeliveryCacheProgressImpl) == 0x200,
-              "DeliveryCacheProgressImpl has incorrect size.");
-
 // A class to manage the signalling to the game about BCAT download progress.
 // Some of this class is implemented in module.cpp to avoid exposing the implementation structure.
 class ProgressServiceBackend {
@@ -107,10 +70,10 @@ private:
 };
 
 // A class representing an abstract backend for BCAT functionality.
-class Backend {
+class BcatBackend {
 public:
-    explicit Backend(DirectoryGetter getter);
+    explicit BcatBackend(DirectoryGetter getter);
-    virtual ~Backend();
+    virtual ~BcatBackend();
 
     // Called when the backend is needed to synchronize the data for the game with title ID and
     // version in title. A ProgressServiceBackend object is provided to alert the application of
@@ -135,10 +98,10 @@ protected:
 };
 
 // A backend of BCAT that provides no operation.
-class NullBackend : public Backend {
+class NullBcatBackend : public BcatBackend {
 public:
-    explicit NullBackend(DirectoryGetter getter);
+    explicit NullBcatBackend(DirectoryGetter getter);
-    ~NullBackend() override;
+    ~NullBcatBackend() override;
 
     bool Synchronize(TitleIDVersion title, ProgressServiceBackend& progress) override;
     bool SynchronizeDirectory(TitleIDVersion title, std::string name,
@@ -151,6 +114,7 @@ public:
     std::optional<std::vector<u8>> GetLaunchParameter(TitleIDVersion title) override;
 };
 
-std::unique_ptr<Backend> CreateBackendFromSettings(Core::System& system, DirectoryGetter getter);
+std::unique_ptr<BcatBackend> CreateBackendFromSettings(Core::System& system,
+                                                       DirectoryGetter getter);
 
 } // namespace Service::BCAT

src/core/hle/service/bcat/bcat.cpp

@@ -1,24 +1,26 @@
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
+#include "core/hle/service/bcat/backend/backend.h"
 #include "core/hle/service/bcat/bcat.h"
+#include "core/hle/service/bcat/bcat_interface.h"
+#include "core/hle/service/server_manager.h"
 
 namespace Service::BCAT {
 
-BCAT::BCAT(Core::System& system_, std::shared_ptr<Module> module_,
+void LoopProcess(Core::System& system) {
-           FileSystem::FileSystemController& fsc_, const char* name_)
+    auto server_manager = std::make_unique<ServerManager>(system);
-    : Interface(system_, std::move(module_), fsc_, name_) {
+
-    // clang-format off
+    server_manager->RegisterNamedService("bcat:a",
-    static const FunctionInfo functions[] = {
+                                         std::make_shared<BcatInterface>(system, "bcat:a"));
-        {0, &BCAT::CreateBcatService, "CreateBcatService"},
+    server_manager->RegisterNamedService("bcat:m",
-        {1, &BCAT::CreateDeliveryCacheStorageService, "CreateDeliveryCacheStorageService"},
+                                         std::make_shared<BcatInterface>(system, "bcat:m"));
-        {2, &BCAT::CreateDeliveryCacheStorageServiceWithApplicationId, "CreateDeliveryCacheStorageServiceWithApplicationId"},
+    server_manager->RegisterNamedService("bcat:u",
-        {3, nullptr, "CreateDeliveryCacheProgressService"},
+                                         std::make_shared<BcatInterface>(system, "bcat:u"));
-        {4, nullptr, "CreateDeliveryCacheProgressServiceWithApplicationId"},
+    server_manager->RegisterNamedService("bcat:s",
-    };
+                                         std::make_shared<BcatInterface>(system, "bcat:s"));
-    // clang-format on
+
-    RegisterHandlers(functions);
+    ServerManager::RunServer(std::move(server_manager));
 }
 
-BCAT::~BCAT() = default;
 } // namespace Service::BCAT

src/core/hle/service/bcat/bcat.h

@@ -3,7 +3,7 @@
 
 #pragma once
 
-#include "core/hle/service/bcat/bcat_module.h"
+#include "core/hle/service/service.h"
 
 namespace Core {
 class System;
@@ -11,11 +11,6 @@ class System;
 
 namespace Service::BCAT {
 
-class BCAT final : public Module::Interface {
+void LoopProcess(Core::System& system);
-public:
-    explicit BCAT(Core::System& system_, std::shared_ptr<Module> module_,
-                  FileSystem::FileSystemController& fsc_, const char* name_);
-    ~BCAT() override;
-};
 
 } // namespace Service::BCAT

src/core/hle/service/bcat/bcat_interface.cpp

@@ -0,0 +1,61 @@
+// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "core/hle/service/bcat/bcat_interface.h"
+#include "core/hle/service/bcat/bcat_service.h"
+#include "core/hle/service/bcat/delivery_cache_storage_service.h"
+#include "core/hle/service/cmif_serialization.h"
+#include "core/hle/service/filesystem/filesystem.h"
+
+namespace Service::BCAT {
+
+std::unique_ptr<BcatBackend> CreateBackendFromSettings([[maybe_unused]] Core::System& system,
+                                                       DirectoryGetter getter) {
+    return std::make_unique<NullBcatBackend>(std::move(getter));
+}
+
+BcatInterface::BcatInterface(Core::System& system_, const char* name_)
+    : ServiceFramework{system_, name_}, fsc{system.GetFileSystemController()} {
+    // clang-format off
+    static const FunctionInfo functions[] = {
+        {0, C<&BcatInterface::CreateBcatService>, "CreateBcatService"},
+        {1, C<&BcatInterface::CreateDeliveryCacheStorageService>, "CreateDeliveryCacheStorageService"},
+        {2, C<&BcatInterface::CreateDeliveryCacheStorageServiceWithApplicationId>, "CreateDeliveryCacheStorageServiceWithApplicationId"},
+        {3, nullptr, "CreateDeliveryCacheProgressService"},
+        {4, nullptr, "CreateDeliveryCacheProgressServiceWithApplicationId"},
+    };
+    // clang-format on
+
+    RegisterHandlers(functions);
+
+    backend =
+        CreateBackendFromSettings(system_, [this](u64 tid) { return fsc.GetBCATDirectory(tid); });
+}
+
+BcatInterface::~BcatInterface() = default;
+
+Result BcatInterface::CreateBcatService(OutInterface<IBcatService> out_interface) {
+    LOG_INFO(Service_BCAT, "called");
+    *out_interface = std::make_shared<IBcatService>(system, *backend);
+    R_SUCCEED();
+}
+
+Result BcatInterface::CreateDeliveryCacheStorageService(
+    OutInterface<IDeliveryCacheStorageService> out_interface) {
+    LOG_INFO(Service_BCAT, "called");
+
+    const auto title_id = system.GetApplicationProcessProgramID();
+    *out_interface =
+        std::make_shared<IDeliveryCacheStorageService>(system, fsc.GetBCATDirectory(title_id));
+    R_SUCCEED();
+}
+
+Result BcatInterface::CreateDeliveryCacheStorageServiceWithApplicationId(
+    u64 title_id, OutInterface<IDeliveryCacheStorageService> out_interface) {
+    LOG_DEBUG(Service_BCAT, "called, title_id={:016X}", title_id);
+    *out_interface =
+        std::make_shared<IDeliveryCacheStorageService>(system, fsc.GetBCATDirectory(title_id));
+    R_SUCCEED();
+}
+
+} // namespace Service::BCAT

src/core/hle/service/bcat/bcat_interface.h

@@ -0,0 +1,40 @@
+// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include "core/hle/service/cmif_types.h"
+#include "core/hle/service/service.h"
+
+namespace Core {
+class System;
+}
+
+namespace Service::FileSystem {
+class FileSystemController;
+}
+
+namespace Service::BCAT {
+class BcatBackend;
+class IBcatService;
+class IDeliveryCacheStorageService;
+
+class BcatInterface final : public ServiceFramework<BcatInterface> {
+public:
+    explicit BcatInterface(Core::System& system_, const char* name_);
+    ~BcatInterface() override;
+
+private:
+    Result CreateBcatService(OutInterface<IBcatService> out_interface);
+
+    Result CreateDeliveryCacheStorageService(
+        OutInterface<IDeliveryCacheStorageService> out_interface);
+
+    Result CreateDeliveryCacheStorageServiceWithApplicationId(
+        u64 title_id, OutInterface<IDeliveryCacheStorageService> out_interface);
+
+    std::unique_ptr<BcatBackend> backend;
+    Service::FileSystem::FileSystemController& fsc;
+};
+
+} // namespace Service::BCAT

src/core/hle/service/bcat/bcat_module.cpp

@@ -1,606 +0,0 @@
-// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#include <cctype>
-#include <mbedtls/md5.h>
-#include "common/hex_util.h"
-#include "common/logging/log.h"
-#include "common/settings.h"
-#include "common/string_util.h"
-#include "core/core.h"
-#include "core/file_sys/vfs/vfs.h"
-#include "core/hle/kernel/k_readable_event.h"
-#include "core/hle/service/bcat/backend/backend.h"
-#include "core/hle/service/bcat/bcat.h"
-#include "core/hle/service/bcat/bcat_module.h"
-#include "core/hle/service/filesystem/filesystem.h"
-#include "core/hle/service/ipc_helpers.h"
-#include "core/hle/service/server_manager.h"
-
-namespace Service::BCAT {
-
-constexpr Result ERROR_INVALID_ARGUMENT{ErrorModule::BCAT, 1};
-constexpr Result ERROR_FAILED_OPEN_ENTITY{ErrorModule::BCAT, 2};
-constexpr Result ERROR_ENTITY_ALREADY_OPEN{ErrorModule::BCAT, 6};
-constexpr Result ERROR_NO_OPEN_ENTITY{ErrorModule::BCAT, 7};
-
-// The command to clear the delivery cache just calls fs IFileSystem DeleteFile on all of the files
-// and if any of them have a non-zero result it just forwards that result. This is the FS error code
-// for permission denied, which is the closest approximation of this scenario.
-constexpr Result ERROR_FAILED_CLEAR_CACHE{ErrorModule::FS, 6400};
-
-using BCATDigest = std::array<u8, 0x10>;
-
-namespace {
-
-u64 GetCurrentBuildID(const Core::System::CurrentBuildProcessID& id) {
-    u64 out{};
-    std::memcpy(&out, id.data(), sizeof(u64));
-    return out;
-}
-
-// The digest is only used to determine if a file is unique compared to others of the same name.
-// Since the algorithm isn't ever checked in game, MD5 is safe.
-BCATDigest DigestFile(const FileSys::VirtualFile& file) {
-    BCATDigest out{};
-    const auto bytes = file->ReadAllBytes();
-    mbedtls_md5_ret(bytes.data(), bytes.size(), out.data());
-    return out;
-}
-
-// For a name to be valid it must be non-empty, must have a null terminating character as the final
-// char, can only contain numbers, letters, underscores and a hyphen if directory and a period if
-// file.
-bool VerifyNameValidInternal(HLERequestContext& ctx, std::array<char, 0x20> name, char match_char) {
-    const auto null_chars = std::count(name.begin(), name.end(), 0);
-    const auto bad_chars = std::count_if(name.begin(), name.end(), [match_char](char c) {
-        return !std::isalnum(static_cast<u8>(c)) && c != '_' && c != match_char && c != '\0';
-    });
-    if (null_chars == 0x20 || null_chars == 0 || bad_chars != 0 || name[0x1F] != '\0') {
-        LOG_ERROR(Service_BCAT, "Name passed was invalid!");
-        IPC::ResponseBuilder rb{ctx, 2};
-        rb.Push(ERROR_INVALID_ARGUMENT);
-        return false;
-    }
-
-    return true;
-}
-
-bool VerifyNameValidDir(HLERequestContext& ctx, DirectoryName name) {
-    return VerifyNameValidInternal(ctx, name, '-');
-}
-
-bool VerifyNameValidFile(HLERequestContext& ctx, FileName name) {
-    return VerifyNameValidInternal(ctx, name, '.');
-}
-
-} // Anonymous namespace
-
-struct DeliveryCacheDirectoryEntry {
-    FileName name;
-    u64 size;
-    BCATDigest digest;
-};
-
-class IDeliveryCacheProgressService final : public ServiceFramework<IDeliveryCacheProgressService> {
-public:
-    explicit IDeliveryCacheProgressService(Core::System& system_, Kernel::KReadableEvent& event_,
-                                           const DeliveryCacheProgressImpl& impl_)
-        : ServiceFramework{system_, "IDeliveryCacheProgressService"}, event{event_}, impl{impl_} {
-        // clang-format off
-        static const FunctionInfo functions[] = {
-            {0, &IDeliveryCacheProgressService::GetEvent, "GetEvent"},
-            {1, &IDeliveryCacheProgressService::GetImpl, "GetImpl"},
-        };
-        // clang-format on
-
-        RegisterHandlers(functions);
-    }
-
-private:
-    void GetEvent(HLERequestContext& ctx) {
-        LOG_DEBUG(Service_BCAT, "called");
-
-        IPC::ResponseBuilder rb{ctx, 2, 1};
-        rb.Push(ResultSuccess);
-        rb.PushCopyObjects(event);
-    }
-
-    void GetImpl(HLERequestContext& ctx) {
-        LOG_DEBUG(Service_BCAT, "called");
-
-        ctx.WriteBuffer(impl);
-
-        IPC::ResponseBuilder rb{ctx, 2};
-        rb.Push(ResultSuccess);
-    }
-
-    Kernel::KReadableEvent& event;
-    const DeliveryCacheProgressImpl& impl;
-};
-
-class IBcatService final : public ServiceFramework<IBcatService> {
-public:
-    explicit IBcatService(Core::System& system_, Backend& backend_)
-        : ServiceFramework{system_, "IBcatService"}, backend{backend_},
-          progress{{
-              ProgressServiceBackend{system_, "Normal"},
-              ProgressServiceBackend{system_, "Directory"},
-          }} {
-        // clang-format off
-        static const FunctionInfo functions[] = {
-            {10100, &IBcatService::RequestSyncDeliveryCache, "RequestSyncDeliveryCache"},
-            {10101, &IBcatService::RequestSyncDeliveryCacheWithDirectoryName, "RequestSyncDeliveryCacheWithDirectoryName"},
-            {10200, nullptr, "CancelSyncDeliveryCacheRequest"},
-            {20100, nullptr, "RequestSyncDeliveryCacheWithApplicationId"},
-            {20101, nullptr, "RequestSyncDeliveryCacheWithApplicationIdAndDirectoryName"},
-            {20300, nullptr, "GetDeliveryCacheStorageUpdateNotifier"},
-            {20301, nullptr, "RequestSuspendDeliveryTask"},
-            {20400, nullptr, "RegisterSystemApplicationDeliveryTask"},
-            {20401, nullptr, "UnregisterSystemApplicationDeliveryTask"},
-            {20410, nullptr, "SetSystemApplicationDeliveryTaskTimer"},
-            {30100, &IBcatService::SetPassphrase, "SetPassphrase"},
-            {30101, nullptr, "Unknown30101"},
-            {30102, nullptr, "Unknown30102"},
-            {30200, nullptr, "RegisterBackgroundDeliveryTask"},
-            {30201, nullptr, "UnregisterBackgroundDeliveryTask"},
-            {30202, nullptr, "BlockDeliveryTask"},
-            {30203, nullptr, "UnblockDeliveryTask"},
-            {30210, nullptr, "SetDeliveryTaskTimer"},
-            {30300, nullptr, "RegisterSystemApplicationDeliveryTasks"},
-            {90100, nullptr, "EnumerateBackgroundDeliveryTask"},
-            {90101, nullptr, "Unknown90101"},
-            {90200, nullptr, "GetDeliveryList"},
-            {90201, &IBcatService::ClearDeliveryCacheStorage, "ClearDeliveryCacheStorage"},
-            {90202, nullptr, "ClearDeliveryTaskSubscriptionStatus"},
-            {90300, nullptr, "GetPushNotificationLog"},
-            {90301, nullptr, "Unknown90301"},
-        };
-        // clang-format on
-        RegisterHandlers(functions);
-    }
-
-private:
-    enum class SyncType {
-        Normal,
-        Directory,
-        Count,
-    };
-
-    std::shared_ptr<IDeliveryCacheProgressService> CreateProgressService(SyncType type) {
-        auto& progress_backend{GetProgressBackend(type)};
-        return std::make_shared<IDeliveryCacheProgressService>(system, progress_backend.GetEvent(),
-                                                               progress_backend.GetImpl());
-    }
-
-    void RequestSyncDeliveryCache(HLERequestContext& ctx) {
-        LOG_DEBUG(Service_BCAT, "called");
-
-        backend.Synchronize({system.GetApplicationProcessProgramID(),
-                             GetCurrentBuildID(system.GetApplicationProcessBuildID())},
-                            GetProgressBackend(SyncType::Normal));
-
-        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
-        rb.Push(ResultSuccess);
-        rb.PushIpcInterface(CreateProgressService(SyncType::Normal));
-    }
-
-    void RequestSyncDeliveryCacheWithDirectoryName(HLERequestContext& ctx) {
-        IPC::RequestParser rp{ctx};
-        const auto name_raw = rp.PopRaw<DirectoryName>();
-        const auto name =
-            Common::StringFromFixedZeroTerminatedBuffer(name_raw.data(), name_raw.size());
-
-        LOG_DEBUG(Service_BCAT, "called, name={}", name);
-
-        backend.SynchronizeDirectory({system.GetApplicationProcessProgramID(),
-                                      GetCurrentBuildID(system.GetApplicationProcessBuildID())},
-                                     name, GetProgressBackend(SyncType::Directory));
-
-        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
-        rb.Push(ResultSuccess);
-        rb.PushIpcInterface(CreateProgressService(SyncType::Directory));
-    }
-
-    void SetPassphrase(HLERequestContext& ctx) {
-        IPC::RequestParser rp{ctx};
-        const auto title_id = rp.PopRaw<u64>();
-
-        const auto passphrase_raw = ctx.ReadBuffer();
-
-        LOG_DEBUG(Service_BCAT, "called, title_id={:016X}, passphrase={}", title_id,
-                  Common::HexToString(passphrase_raw));
-
-        if (title_id == 0) {
-            LOG_ERROR(Service_BCAT, "Invalid title ID!");
-            IPC::ResponseBuilder rb{ctx, 2};
-            rb.Push(ERROR_INVALID_ARGUMENT);
-        }
-
-        if (passphrase_raw.size() > 0x40) {
-            LOG_ERROR(Service_BCAT, "Passphrase too large!");
-            IPC::ResponseBuilder rb{ctx, 2};
-            rb.Push(ERROR_INVALID_ARGUMENT);
-            return;
-        }
-
-        Passphrase passphrase{};
-        std::memcpy(passphrase.data(), passphrase_raw.data(),
-                    std::min(passphrase.size(), passphrase_raw.size()));
-
-        backend.SetPassphrase(title_id, passphrase);
-
-        IPC::ResponseBuilder rb{ctx, 2};
-        rb.Push(ResultSuccess);
-    }
-
-    void ClearDeliveryCacheStorage(HLERequestContext& ctx) {
-        IPC::RequestParser rp{ctx};
-        const auto title_id = rp.PopRaw<u64>();
-
-        LOG_DEBUG(Service_BCAT, "called, title_id={:016X}", title_id);
-
-        if (title_id == 0) {
-            LOG_ERROR(Service_BCAT, "Invalid title ID!");
-            IPC::ResponseBuilder rb{ctx, 2};
-            rb.Push(ERROR_INVALID_ARGUMENT);
-            return;
-        }
-
-        if (!backend.Clear(title_id)) {
-            LOG_ERROR(Service_BCAT, "Could not clear the directory successfully!");
-            IPC::ResponseBuilder rb{ctx, 2};
-            rb.Push(ERROR_FAILED_CLEAR_CACHE);
-            return;
-        }
-
-        IPC::ResponseBuilder rb{ctx, 2};
-        rb.Push(ResultSuccess);
-    }
-
-    ProgressServiceBackend& GetProgressBackend(SyncType type) {
-        return progress.at(static_cast<size_t>(type));
-    }
-
-    const ProgressServiceBackend& GetProgressBackend(SyncType type) const {
-        return progress.at(static_cast<size_t>(type));
-    }
-
-    Backend& backend;
-    std::array<ProgressServiceBackend, static_cast<size_t>(SyncType::Count)> progress;
-};
-
-void Module::Interface::CreateBcatService(HLERequestContext& ctx) {
-    LOG_DEBUG(Service_BCAT, "called");
-
-    IPC::ResponseBuilder rb{ctx, 2, 0, 1};
-    rb.Push(ResultSuccess);
-    rb.PushIpcInterface<IBcatService>(system, *backend);
-}
-
-class IDeliveryCacheFileService final : public ServiceFramework<IDeliveryCacheFileService> {
-public:
-    explicit IDeliveryCacheFileService(Core::System& system_, FileSys::VirtualDir root_)
-        : ServiceFramework{system_, "IDeliveryCacheFileService"}, root(std::move(root_)) {
-        // clang-format off
-        static const FunctionInfo functions[] = {
-            {0, &IDeliveryCacheFileService::Open, "Open"},
-            {1, &IDeliveryCacheFileService::Read, "Read"},
-            {2, &IDeliveryCacheFileService::GetSize, "GetSize"},
-            {3, &IDeliveryCacheFileService::GetDigest, "GetDigest"},
-        };
-        // clang-format on
-
-        RegisterHandlers(functions);
-    }
-
-private:
-    void Open(HLERequestContext& ctx) {
-        IPC::RequestParser rp{ctx};
-        const auto dir_name_raw = rp.PopRaw<DirectoryName>();
-        const auto file_name_raw = rp.PopRaw<FileName>();
-
-        const auto dir_name =
-            Common::StringFromFixedZeroTerminatedBuffer(dir_name_raw.data(), dir_name_raw.size());
-        const auto file_name =
-            Common::StringFromFixedZeroTerminatedBuffer(file_name_raw.data(), file_name_raw.size());
-
-        LOG_DEBUG(Service_BCAT, "called, dir_name={}, file_name={}", dir_name, file_name);
-
-        if (!VerifyNameValidDir(ctx, dir_name_raw) || !VerifyNameValidFile(ctx, file_name_raw))
-            return;
-
-        if (current_file != nullptr) {
-            LOG_ERROR(Service_BCAT, "A file has already been opened on this interface!");
-            IPC::ResponseBuilder rb{ctx, 2};
-            rb.Push(ERROR_ENTITY_ALREADY_OPEN);
-            return;
-        }
-
-        const auto dir = root->GetSubdirectory(dir_name);
-
-        if (dir == nullptr) {
-            LOG_ERROR(Service_BCAT, "The directory of name={} couldn't be opened!", dir_name);
-            IPC::ResponseBuilder rb{ctx, 2};
-            rb.Push(ERROR_FAILED_OPEN_ENTITY);
-            return;
-        }
-
-        current_file = dir->GetFile(file_name);
-
-        if (current_file == nullptr) {
-            LOG_ERROR(Service_BCAT, "The file of name={} couldn't be opened!", file_name);
-            IPC::ResponseBuilder rb{ctx, 2};
-            rb.Push(ERROR_FAILED_OPEN_ENTITY);
-            return;
-        }
-
-        IPC::ResponseBuilder rb{ctx, 2};
-        rb.Push(ResultSuccess);
-    }
-
-    void Read(HLERequestContext& ctx) {
-        IPC::RequestParser rp{ctx};
-        const auto offset{rp.PopRaw<u64>()};
-
-        auto size = ctx.GetWriteBufferSize();
-
-        LOG_DEBUG(Service_BCAT, "called, offset={:016X}, size={:016X}", offset, size);
-
-        if (current_file == nullptr) {
-            LOG_ERROR(Service_BCAT, "There is no file currently open!");
-            IPC::ResponseBuilder rb{ctx, 2};
-            rb.Push(ERROR_NO_OPEN_ENTITY);
-        }
-
-        size = std::min<u64>(current_file->GetSize() - offset, size);
-        const auto buffer = current_file->ReadBytes(size, offset);
-        ctx.WriteBuffer(buffer);
-
-        IPC::ResponseBuilder rb{ctx, 4};
-        rb.Push(ResultSuccess);
-        rb.Push<u64>(buffer.size());
-    }
-
-    void GetSize(HLERequestContext& ctx) {
-        LOG_DEBUG(Service_BCAT, "called");
-
-        if (current_file == nullptr) {
-            LOG_ERROR(Service_BCAT, "There is no file currently open!");
-            IPC::ResponseBuilder rb{ctx, 2};
-            rb.Push(ERROR_NO_OPEN_ENTITY);
-        }
-
-        IPC::ResponseBuilder rb{ctx, 4};
-        rb.Push(ResultSuccess);
-        rb.Push<u64>(current_file->GetSize());
-    }
-
-    void GetDigest(HLERequestContext& ctx) {
-        LOG_DEBUG(Service_BCAT, "called");
-
-        if (current_file == nullptr) {
-            LOG_ERROR(Service_BCAT, "There is no file currently open!");
-            IPC::ResponseBuilder rb{ctx, 2};
-            rb.Push(ERROR_NO_OPEN_ENTITY);
-        }
-
-        IPC::ResponseBuilder rb{ctx, 6};
-        rb.Push(ResultSuccess);
-        rb.PushRaw(DigestFile(current_file));
-    }
-
-    FileSys::VirtualDir root;
-    FileSys::VirtualFile current_file;
-};
-
-class IDeliveryCacheDirectoryService final
-    : public ServiceFramework<IDeliveryCacheDirectoryService> {
-public:
-    explicit IDeliveryCacheDirectoryService(Core::System& system_, FileSys::VirtualDir root_)
-        : ServiceFramework{system_, "IDeliveryCacheDirectoryService"}, root(std::move(root_)) {
-        // clang-format off
-        static const FunctionInfo functions[] = {
-            {0, &IDeliveryCacheDirectoryService::Open, "Open"},
-            {1, &IDeliveryCacheDirectoryService::Read, "Read"},
-            {2, &IDeliveryCacheDirectoryService::GetCount, "GetCount"},
-        };
-        // clang-format on
-
-        RegisterHandlers(functions);
-    }
-
-private:
-    void Open(HLERequestContext& ctx) {
-        IPC::RequestParser rp{ctx};
-        const auto name_raw = rp.PopRaw<DirectoryName>();
-        const auto name =
-            Common::StringFromFixedZeroTerminatedBuffer(name_raw.data(), name_raw.size());
-
-        LOG_DEBUG(Service_BCAT, "called, name={}", name);
-
-        if (!VerifyNameValidDir(ctx, name_raw))
-            return;
-
-        if (current_dir != nullptr) {
-            LOG_ERROR(Service_BCAT, "A file has already been opened on this interface!");
-            IPC::ResponseBuilder rb{ctx, 2};
-            rb.Push(ERROR_ENTITY_ALREADY_OPEN);
-            return;
-        }
-
-        current_dir = root->GetSubdirectory(name);
-
-        if (current_dir == nullptr) {
-            LOG_ERROR(Service_BCAT, "Failed to open the directory name={}!", name);
-            IPC::ResponseBuilder rb{ctx, 2};
-            rb.Push(ERROR_FAILED_OPEN_ENTITY);
-            return;
-        }
-
-        IPC::ResponseBuilder rb{ctx, 2};
-        rb.Push(ResultSuccess);
-    }
-
-    void Read(HLERequestContext& ctx) {
-        auto write_size = ctx.GetWriteBufferNumElements<DeliveryCacheDirectoryEntry>();
-
-        LOG_DEBUG(Service_BCAT, "called, write_size={:016X}", write_size);
-
-        if (current_dir == nullptr) {
-            LOG_ERROR(Service_BCAT, "There is no open directory!");
-            IPC::ResponseBuilder rb{ctx, 2};
-            rb.Push(ERROR_NO_OPEN_ENTITY);
-            return;
-        }
-
-        const auto files = current_dir->GetFiles();
-        write_size = std::min<u64>(write_size, files.size());
-        std::vector<DeliveryCacheDirectoryEntry> entries(write_size);
-        std::transform(
-            files.begin(), files.begin() + write_size, entries.begin(), [](const auto& file) {
-                FileName name{};
-                std::memcpy(name.data(), file->GetName().data(),
-                            std::min(file->GetName().size(), name.size()));
-                return DeliveryCacheDirectoryEntry{name, file->GetSize(), DigestFile(file)};
-            });
-
-        ctx.WriteBuffer(entries);
-
-        IPC::ResponseBuilder rb{ctx, 3};
-        rb.Push(ResultSuccess);
-        rb.Push(static_cast<u32>(write_size * sizeof(DeliveryCacheDirectoryEntry)));
-    }
-
-    void GetCount(HLERequestContext& ctx) {
-        LOG_DEBUG(Service_BCAT, "called");
-
-        if (current_dir == nullptr) {
-            LOG_ERROR(Service_BCAT, "There is no open directory!");
-            IPC::ResponseBuilder rb{ctx, 2};
-            rb.Push(ERROR_NO_OPEN_ENTITY);
-            return;
-        }
-
-        const auto files = current_dir->GetFiles();
-
-        IPC::ResponseBuilder rb{ctx, 3};
-        rb.Push(ResultSuccess);
-        rb.Push(static_cast<u32>(files.size()));
-    }
-
-    FileSys::VirtualDir root;
-    FileSys::VirtualDir current_dir;
-};
-
-class IDeliveryCacheStorageService final : public ServiceFramework<IDeliveryCacheStorageService> {
-public:
-    explicit IDeliveryCacheStorageService(Core::System& system_, FileSys::VirtualDir root_)
-        : ServiceFramework{system_, "IDeliveryCacheStorageService"}, root(std::move(root_)) {
-        // clang-format off
-        static const FunctionInfo functions[] = {
-            {0, &IDeliveryCacheStorageService::CreateFileService, "CreateFileService"},
-            {1, &IDeliveryCacheStorageService::CreateDirectoryService, "CreateDirectoryService"},
-            {10, &IDeliveryCacheStorageService::EnumerateDeliveryCacheDirectory, "EnumerateDeliveryCacheDirectory"},
-        };
-        // clang-format on
-
-        RegisterHandlers(functions);
-
-        for (const auto& subdir : root->GetSubdirectories()) {
-            DirectoryName name{};
-            std::memcpy(name.data(), subdir->GetName().data(),
-                        std::min(sizeof(DirectoryName) - 1, subdir->GetName().size()));
-            entries.push_back(name);
-        }
-    }
-
-private:
-    void CreateFileService(HLERequestContext& ctx) {
-        LOG_DEBUG(Service_BCAT, "called");
-
-        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
-        rb.Push(ResultSuccess);
-        rb.PushIpcInterface<IDeliveryCacheFileService>(system, root);
-    }
-
-    void CreateDirectoryService(HLERequestContext& ctx) {
-        LOG_DEBUG(Service_BCAT, "called");
-
-        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
-        rb.Push(ResultSuccess);
-        rb.PushIpcInterface<IDeliveryCacheDirectoryService>(system, root);
-    }
-
-    void EnumerateDeliveryCacheDirectory(HLERequestContext& ctx) {
-        auto size = ctx.GetWriteBufferNumElements<DirectoryName>();
-
-        LOG_DEBUG(Service_BCAT, "called, size={:016X}", size);
-
-        size = std::min<u64>(size, entries.size() - next_read_index);
-        ctx.WriteBuffer(entries.data() + next_read_index, size * sizeof(DirectoryName));
-        next_read_index += size;
-
-        IPC::ResponseBuilder rb{ctx, 3};
-        rb.Push(ResultSuccess);
-        rb.Push(static_cast<u32>(size));
-    }
-
-    FileSys::VirtualDir root;
-    std::vector<DirectoryName> entries;
-    u64 next_read_index = 0;
-};
-
-void Module::Interface::CreateDeliveryCacheStorageService(HLERequestContext& ctx) {
-    LOG_DEBUG(Service_BCAT, "called");
-
-    const auto title_id = system.GetApplicationProcessProgramID();
-    IPC::ResponseBuilder rb{ctx, 2, 0, 1};
-    rb.Push(ResultSuccess);
-    rb.PushIpcInterface<IDeliveryCacheStorageService>(system, fsc.GetBCATDirectory(title_id));
-}
-
-void Module::Interface::CreateDeliveryCacheStorageServiceWithApplicationId(HLERequestContext& ctx) {
-    IPC::RequestParser rp{ctx};
-    const auto title_id = rp.PopRaw<u64>();
-
-    LOG_DEBUG(Service_BCAT, "called, title_id={:016X}", title_id);
-
-    IPC::ResponseBuilder rb{ctx, 2, 0, 1};
-    rb.Push(ResultSuccess);
-    rb.PushIpcInterface<IDeliveryCacheStorageService>(system, fsc.GetBCATDirectory(title_id));
-}
-
-std::unique_ptr<Backend> CreateBackendFromSettings([[maybe_unused]] Core::System& system,
-                                                   DirectoryGetter getter) {
-    return std::make_unique<NullBackend>(std::move(getter));
-}
-
-Module::Interface::Interface(Core::System& system_, std::shared_ptr<Module> module_,
-                             FileSystem::FileSystemController& fsc_, const char* name)
-    : ServiceFramework{system_, name}, fsc{fsc_}, module{std::move(module_)},
-      backend{CreateBackendFromSettings(system_,
-                                        [&fsc_](u64 tid) { return fsc_.GetBCATDirectory(tid); })} {}
-
-Module::Interface::~Interface() = default;
-
-void LoopProcess(Core::System& system) {
-    auto server_manager = std::make_unique<ServerManager>(system);
-    auto module = std::make_shared<Module>();
-
-    server_manager->RegisterNamedService(
-        "bcat:a",
-        std::make_shared<BCAT>(system, module, system.GetFileSystemController(), "bcat:a"));
-    server_manager->RegisterNamedService(
-        "bcat:m",
-        std::make_shared<BCAT>(system, module, system.GetFileSystemController(), "bcat:m"));
-    server_manager->RegisterNamedService(
-        "bcat:u",
-        std::make_shared<BCAT>(system, module, system.GetFileSystemController(), "bcat:u"));
-    server_manager->RegisterNamedService(
-        "bcat:s",
-        std::make_shared<BCAT>(system, module, system.GetFileSystemController(), "bcat:s"));
-    ServerManager::RunServer(std::move(server_manager));
-}
-
-} // namespace Service::BCAT

src/core/hle/service/bcat/bcat_module.h

@@ -1,46 +0,0 @@
-// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#pragma once
-
-#include "core/hle/service/service.h"
-
-namespace Core {
-class System;
-}
-
-namespace Service {
-
-namespace FileSystem {
-class FileSystemController;
-} // namespace FileSystem
-
-namespace BCAT {
-
-class Backend;
-
-class Module final {
-public:
-    class Interface : public ServiceFramework<Interface> {
-    public:
-        explicit Interface(Core::System& system_, std::shared_ptr<Module> module_,
-                           FileSystem::FileSystemController& fsc_, const char* name);
-        ~Interface() override;
-
-        void CreateBcatService(HLERequestContext& ctx);
-        void CreateDeliveryCacheStorageService(HLERequestContext& ctx);
-        void CreateDeliveryCacheStorageServiceWithApplicationId(HLERequestContext& ctx);
-
-    protected:
-        FileSystem::FileSystemController& fsc;
-
-        std::shared_ptr<Module> module;
-        std::unique_ptr<Backend> backend;
-    };
-};
-
-void LoopProcess(Core::System& system);
-
-} // namespace BCAT
-
-} // namespace Service

src/core/hle/service/bcat/bcat_result.h

@@ -0,0 +1,20 @@
+// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include "core/hle/result.h"
+
+namespace Service::BCAT {
+
+constexpr Result ResultInvalidArgument{ErrorModule::BCAT, 1};
+constexpr Result ResultFailedOpenEntity{ErrorModule::BCAT, 2};
+constexpr Result ResultEntityAlreadyOpen{ErrorModule::BCAT, 6};
+constexpr Result ResultNoOpenEntry{ErrorModule::BCAT, 7};
+
+// The command to clear the delivery cache just calls fs IFileSystem DeleteFile on all of the
+// files and if any of them have a non-zero result it just forwards that result. This is the FS
+// error code for permission denied, which is the closest approximation of this scenario.
+constexpr Result ResultFailedClearCache{ErrorModule::FS, 6400};
+
+} // namespace Service::BCAT

src/core/hle/service/bcat/bcat_service.cpp

@@ -0,0 +1,131 @@
+// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "common/hex_util.h"
+#include "common/string_util.h"
+#include "core/core.h"
+#include "core/hle/service/bcat/backend/backend.h"
+#include "core/hle/service/bcat/bcat_result.h"
+#include "core/hle/service/bcat/bcat_service.h"
+#include "core/hle/service/bcat/bcat_util.h"
+#include "core/hle/service/bcat/delivery_cache_progress_service.h"
+#include "core/hle/service/bcat/delivery_cache_storage_service.h"
+#include "core/hle/service/cmif_serialization.h"
+
+namespace Service::BCAT {
+
+u64 GetCurrentBuildID(const Core::System::CurrentBuildProcessID& id) {
+    u64 out{};
+    std::memcpy(&out, id.data(), sizeof(u64));
+    return out;
+}
+
+IBcatService::IBcatService(Core::System& system_, BcatBackend& backend_)
+    : ServiceFramework{system_, "IBcatService"}, backend{backend_},
+      progress{{
+          ProgressServiceBackend{system_, "Normal"},
+          ProgressServiceBackend{system_, "Directory"},
+      }} {
+    // clang-format off
+        static const FunctionInfo functions[] = {
+            {10100, C<&IBcatService::RequestSyncDeliveryCache>, "RequestSyncDeliveryCache"},
+            {10101, C<&IBcatService::RequestSyncDeliveryCacheWithDirectoryName>, "RequestSyncDeliveryCacheWithDirectoryName"},
+            {10200, nullptr, "CancelSyncDeliveryCacheRequest"},
+            {20100, nullptr, "RequestSyncDeliveryCacheWithApplicationId"},
+            {20101, nullptr, "RequestSyncDeliveryCacheWithApplicationIdAndDirectoryName"},
+            {20300, nullptr, "GetDeliveryCacheStorageUpdateNotifier"},
+            {20301, nullptr, "RequestSuspendDeliveryTask"},
+            {20400, nullptr, "RegisterSystemApplicationDeliveryTask"},
+            {20401, nullptr, "UnregisterSystemApplicationDeliveryTask"},
+            {20410, nullptr, "SetSystemApplicationDeliveryTaskTimer"},
+            {30100, C<&IBcatService::SetPassphrase>, "SetPassphrase"},
+            {30101, nullptr, "Unknown30101"},
+            {30102, nullptr, "Unknown30102"},
+            {30200, nullptr, "RegisterBackgroundDeliveryTask"},
+            {30201, nullptr, "UnregisterBackgroundDeliveryTask"},
+            {30202, nullptr, "BlockDeliveryTask"},
+            {30203, nullptr, "UnblockDeliveryTask"},
+            {30210, nullptr, "SetDeliveryTaskTimer"},
+            {30300, C<&IBcatService::RegisterSystemApplicationDeliveryTasks>, "RegisterSystemApplicationDeliveryTasks"},
+            {90100, nullptr, "EnumerateBackgroundDeliveryTask"},
+            {90101, nullptr, "Unknown90101"},
+            {90200, nullptr, "GetDeliveryList"},
+            {90201, C<&IBcatService::ClearDeliveryCacheStorage>, "ClearDeliveryCacheStorage"},
+            {90202, nullptr, "ClearDeliveryTaskSubscriptionStatus"},
+            {90300, nullptr, "GetPushNotificationLog"},
+            {90301, nullptr, "Unknown90301"},
+        };
+    // clang-format on
+    RegisterHandlers(functions);
+}
+
+IBcatService::~IBcatService() = default;
+
+Result IBcatService::RequestSyncDeliveryCache(
+    OutInterface<IDeliveryCacheProgressService> out_interface) {
+    LOG_DEBUG(Service_BCAT, "called");
+
+    auto& progress_backend{GetProgressBackend(SyncType::Normal)};
+    backend.Synchronize({system.GetApplicationProcessProgramID(),
+                         GetCurrentBuildID(system.GetApplicationProcessBuildID())},
+                        GetProgressBackend(SyncType::Normal));
+
+    *out_interface = std::make_shared<IDeliveryCacheProgressService>(
+        system, progress_backend.GetEvent(), progress_backend.GetImpl());
+    R_SUCCEED();
+}
+
+Result IBcatService::RequestSyncDeliveryCacheWithDirectoryName(
+    DirectoryName name_raw, OutInterface<IDeliveryCacheProgressService> out_interface) {
+    const auto name = Common::StringFromFixedZeroTerminatedBuffer(name_raw.data(), name_raw.size());
+
+    LOG_DEBUG(Service_BCAT, "called, name={}", name);
+
+    auto& progress_backend{GetProgressBackend(SyncType::Directory)};
+    backend.SynchronizeDirectory({system.GetApplicationProcessProgramID(),
+                                  GetCurrentBuildID(system.GetApplicationProcessBuildID())},
+                                 name, progress_backend);
+
+    *out_interface = std::make_shared<IDeliveryCacheProgressService>(
+        system, progress_backend.GetEvent(), progress_backend.GetImpl());
+    R_SUCCEED();
+}
+
+Result IBcatService::SetPassphrase(u64 title_id,
+                                   InBuffer<BufferAttr_HipcPointer> passphrase_buffer) {
+    LOG_DEBUG(Service_BCAT, "called, title_id={:016X}, passphrase={}", title_id,
+              Common::HexToString(passphrase_buffer));
+
+    R_UNLESS(title_id != 0, ResultInvalidArgument);
+    R_UNLESS(passphrase_buffer.size() <= 0x40, ResultInvalidArgument);
+
+    Passphrase passphrase{};
+    std::memcpy(passphrase.data(), passphrase_buffer.data(),
+                std::min(passphrase.size(), passphrase_buffer.size()));
+
+    backend.SetPassphrase(title_id, passphrase);
+    R_SUCCEED();
+}
+
+Result IBcatService::RegisterSystemApplicationDeliveryTasks() {
+    LOG_WARNING(Service_BCAT, "(STUBBED) called");
+    R_SUCCEED();
+}
+
+Result IBcatService::ClearDeliveryCacheStorage(u64 title_id) {
+    LOG_DEBUG(Service_BCAT, "called, title_id={:016X}", title_id);
+
+    R_UNLESS(title_id != 0, ResultInvalidArgument);
+    R_UNLESS(backend.Clear(title_id), ResultFailedClearCache);
+    R_SUCCEED();
+}
+
+ProgressServiceBackend& IBcatService::GetProgressBackend(SyncType type) {
+    return progress.at(static_cast<size_t>(type));
+}
+
+const ProgressServiceBackend& IBcatService::GetProgressBackend(SyncType type) const {
+    return progress.at(static_cast<size_t>(type));
+}
+
+} // namespace Service::BCAT

src/core/hle/service/bcat/bcat_service.h

@@ -0,0 +1,45 @@
+// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include "core/hle/service/bcat/backend/backend.h"
+#include "core/hle/service/bcat/bcat_types.h"
+#include "core/hle/service/cmif_types.h"
+#include "core/hle/service/service.h"
+
+namespace Core {
+class System;
+}
+
+namespace Service::BCAT {
+class BcatBackend;
+class IDeliveryCacheStorageService;
+class IDeliveryCacheProgressService;
+
+class IBcatService final : public ServiceFramework<IBcatService> {
+public:
+    explicit IBcatService(Core::System& system_, BcatBackend& backend_);
+    ~IBcatService() override;
+
+private:
+    Result RequestSyncDeliveryCache(OutInterface<IDeliveryCacheProgressService> out_interface);
+
+    Result RequestSyncDeliveryCacheWithDirectoryName(
+        DirectoryName name, OutInterface<IDeliveryCacheProgressService> out_interface);
+
+    Result SetPassphrase(u64 title_id, InBuffer<BufferAttr_HipcPointer> passphrase_buffer);
+
+    Result RegisterSystemApplicationDeliveryTasks();
+
+    Result ClearDeliveryCacheStorage(u64 title_id);
+
+private:
+    ProgressServiceBackend& GetProgressBackend(SyncType type);
+    const ProgressServiceBackend& GetProgressBackend(SyncType type) const;
+
+    BcatBackend& backend;
+    std::array<ProgressServiceBackend, static_cast<size_t>(SyncType::Count)> progress;
+};
+
+} // namespace Service::BCAT

src/core/hle/service/bcat/bcat_types.h

@@ -0,0 +1,60 @@
+// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include "common/common_funcs.h"
+#include "common/common_types.h"
+#include "core/file_sys/vfs/vfs_types.h"
+
+namespace Service::BCAT {
+
+using DirectoryName = std::array<char, 0x20>;
+using FileName = std::array<char, 0x20>;
+using BcatDigest = std::array<u8, 0x10>;
+using Passphrase = std::array<u8, 0x20>;
+using DirectoryGetter = std::function<FileSys::VirtualDir(u64)>;
+
+enum class SyncType {
+    Normal,
+    Directory,
+    Count,
+};
+
+enum class DeliveryCacheProgressStatus : s32 {
+    None = 0x0,
+    Queued = 0x1,
+    Connecting = 0x2,
+    ProcessingDataList = 0x3,
+    Downloading = 0x4,
+    Committing = 0x5,
+    Done = 0x9,
+};
+
+struct DeliveryCacheDirectoryEntry {
+    FileName name;
+    u64 size;
+    BcatDigest digest;
+};
+
+struct TitleIDVersion {
+    u64 title_id;
+    u64 build_id;
+};
+
+struct DeliveryCacheProgressImpl {
+    DeliveryCacheProgressStatus status;
+    Result result = ResultSuccess;
+    DirectoryName current_directory;
+    FileName current_file;
+    s64 current_downloaded_bytes; ///< Bytes downloaded on current file.
+    s64 current_total_bytes;      ///< Bytes total on current file.
+    s64 total_downloaded_bytes;   ///< Bytes downloaded on overall download.
+    s64 total_bytes;              ///< Bytes total on overall download.
+    INSERT_PADDING_BYTES(
+        0x198); ///< Appears to be unused in official code, possibly reserved for future use.
+};
+static_assert(sizeof(DeliveryCacheProgressImpl) == 0x200,
+              "DeliveryCacheProgressImpl has incorrect size.");
+
+} // namespace Service::BCAT

src/core/hle/service/bcat/bcat_util.h

@@ -0,0 +1,39 @@
+// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include <array>
+#include <cctype>
+#include <mbedtls/md5.h>
+
+#include "core/hle/service/bcat/bcat_result.h"
+#include "core/hle/service/bcat/bcat_types.h"
+
+namespace Service::BCAT {
+
+// For a name to be valid it must be non-empty, must have a null terminating character as the final
+// char, can only contain numbers, letters, underscores and a hyphen if directory and a period if
+// file.
+constexpr Result VerifyNameValidInternal(std::array<char, 0x20> name, char match_char) {
+    const auto null_chars = std::count(name.begin(), name.end(), 0);
+    const auto bad_chars = std::count_if(name.begin(), name.end(), [match_char](char c) {
+        return !std::isalnum(static_cast<u8>(c)) && c != '_' && c != match_char && c != '\0';
+    });
+    if (null_chars == 0x20 || null_chars == 0 || bad_chars != 0 || name[0x1F] != '\0') {
+        LOG_ERROR(Service_BCAT, "Name passed was invalid!");
+        return ResultInvalidArgument;
+    }
+
+    return ResultSuccess;
+}
+
+constexpr Result VerifyNameValidDir(DirectoryName name) {
+    return VerifyNameValidInternal(name, '-');
+}
+
+constexpr Result VerifyNameValidFile(FileName name) {
+    return VerifyNameValidInternal(name, '.');
+}
+
+} // namespace Service::BCAT

src/core/hle/service/bcat/delivery_cache_directory_service.cpp

@@ -0,0 +1,81 @@
+// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "common/string_util.h"
+#include "core/file_sys/vfs/vfs_types.h"
+#include "core/hle/service/bcat/bcat_result.h"
+#include "core/hle/service/bcat/bcat_util.h"
+#include "core/hle/service/bcat/delivery_cache_directory_service.h"
+#include "core/hle/service/cmif_serialization.h"
+
+namespace Service::BCAT {
+
+// The digest is only used to determine if a file is unique compared to others of the same name.
+// Since the algorithm isn't ever checked in game, MD5 is safe.
+BcatDigest DigestFile(const FileSys::VirtualFile& file) {
+    BcatDigest out{};
+    const auto bytes = file->ReadAllBytes();
+    mbedtls_md5_ret(bytes.data(), bytes.size(), out.data());
+    return out;
+}
+
+IDeliveryCacheDirectoryService::IDeliveryCacheDirectoryService(Core::System& system_,
+                                                               FileSys::VirtualDir root_)
+    : ServiceFramework{system_, "IDeliveryCacheDirectoryService"}, root(std::move(root_)) {
+    // clang-format off
+    static const FunctionInfo functions[] = {
+        {0, C<&IDeliveryCacheDirectoryService::Open>, "Open"},
+        {1, C<&IDeliveryCacheDirectoryService::Read>, "Read"},
+        {2, C<&IDeliveryCacheDirectoryService::GetCount>, "GetCount"},
+    };
+    // clang-format on
+
+    RegisterHandlers(functions);
+}
+
+IDeliveryCacheDirectoryService::~IDeliveryCacheDirectoryService() = default;
+
+Result IDeliveryCacheDirectoryService::Open(DirectoryName dir_name_raw) {
+    const auto dir_name =
+        Common::StringFromFixedZeroTerminatedBuffer(dir_name_raw.data(), dir_name_raw.size());
+
+    LOG_DEBUG(Service_BCAT, "called, dir_name={}", dir_name);
+
+    // R_TRY(VerifyNameValidDir(dir_name_raw));
+    R_UNLESS(current_dir == nullptr, ResultEntityAlreadyOpen);
+
+    const auto dir = root->GetSubdirectory(dir_name);
+    R_UNLESS(dir != nullptr, ResultFailedOpenEntity);
+
+    R_SUCCEED();
+}
+
+Result IDeliveryCacheDirectoryService::Read(
+    Out<u32> out_buffer_size,
+    OutArray<DeliveryCacheDirectoryEntry, BufferAttr_HipcMapAlias> out_buffer) {
+    LOG_DEBUG(Service_BCAT, "called, write_size={:016X}", out_buffer.size());
+
+    R_UNLESS(current_dir != nullptr, ResultNoOpenEntry);
+
+    const auto files = current_dir->GetFiles();
+    *out_buffer_size = static_cast<u32>(std::min(files.size(), out_buffer.size()));
+    std::transform(files.begin(), files.begin() + *out_buffer_size, out_buffer.begin(),
+                   [](const auto& file) {
+                       FileName name{};
+                       std::memcpy(name.data(), file->GetName().data(),
+                                   std::min(file->GetName().size(), name.size()));
+                       return DeliveryCacheDirectoryEntry{name, file->GetSize(), DigestFile(file)};
+                   });
+    R_SUCCEED();
+}
+
+Result IDeliveryCacheDirectoryService::GetCount(Out<u32> out_count) {
+    LOG_DEBUG(Service_BCAT, "called");
+
+    R_UNLESS(current_dir != nullptr, ResultNoOpenEntry);
+
+    *out_count = static_cast<u32>(current_dir->GetFiles().size());
+    R_SUCCEED();
+}
+
+} // namespace Service::BCAT

src/core/hle/service/bcat/delivery_cache_directory_service.h

@@ -0,0 +1,33 @@
+// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include "core/file_sys/vfs/vfs.h"
+#include "core/hle/service/bcat/bcat_types.h"
+#include "core/hle/service/cmif_types.h"
+#include "core/hle/service/service.h"
+
+namespace Core {
+class System;
+}
+
+namespace Service::BCAT {
+
+class IDeliveryCacheDirectoryService final
+    : public ServiceFramework<IDeliveryCacheDirectoryService> {
+public:
+    explicit IDeliveryCacheDirectoryService(Core::System& system_, FileSys::VirtualDir root_);
+    ~IDeliveryCacheDirectoryService() override;
+
+private:
+    Result Open(DirectoryName dir_name_raw);
+    Result Read(Out<u32> out_buffer_size,
+                OutArray<DeliveryCacheDirectoryEntry, BufferAttr_HipcMapAlias> out_buffer);
+    Result GetCount(Out<u32> out_count);
+
+    FileSys::VirtualDir root;
+    FileSys::VirtualDir current_dir;
+};
+
+} // namespace Service::BCAT

src/core/hle/service/bcat/delivery_cache_file_service.cpp

@@ -0,0 +1,81 @@
+// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "common/string_util.h"
+#include "core/hle/service/bcat/bcat_result.h"
+#include "core/hle/service/bcat/bcat_util.h"
+#include "core/hle/service/bcat/delivery_cache_file_service.h"
+#include "core/hle/service/cmif_serialization.h"
+
+namespace Service::BCAT {
+
+IDeliveryCacheFileService::IDeliveryCacheFileService(Core::System& system_,
+                                                     FileSys::VirtualDir root_)
+    : ServiceFramework{system_, "IDeliveryCacheFileService"}, root(std::move(root_)) {
+    // clang-format off
+    static const FunctionInfo functions[] = {
+        {0, C<&IDeliveryCacheFileService::Open>, "Open"},
+        {1, C<&IDeliveryCacheFileService::Read>, "Read"},
+        {2, C<&IDeliveryCacheFileService::GetSize>, "GetSize"},
+        {3, C<&IDeliveryCacheFileService::GetDigest>, "GetDigest"},
+    };
+    // clang-format on
+
+    RegisterHandlers(functions);
+}
+
+IDeliveryCacheFileService::~IDeliveryCacheFileService() = default;
+
+Result IDeliveryCacheFileService::Open(DirectoryName dir_name_raw, FileName file_name_raw) {
+    const auto dir_name =
+        Common::StringFromFixedZeroTerminatedBuffer(dir_name_raw.data(), dir_name_raw.size());
+    const auto file_name =
+        Common::StringFromFixedZeroTerminatedBuffer(file_name_raw.data(), file_name_raw.size());
+
+    LOG_DEBUG(Service_BCAT, "called, dir_name={}, file_name={}", dir_name, file_name);
+
+    R_TRY(VerifyNameValidDir(dir_name_raw));
+    R_TRY(VerifyNameValidDir(file_name_raw));
+    R_UNLESS(current_file == nullptr, ResultEntityAlreadyOpen);
+
+    const auto dir = root->GetSubdirectory(dir_name);
+    R_UNLESS(dir != nullptr, ResultFailedOpenEntity);
+
+    current_file = dir->GetFile(file_name);
+    R_UNLESS(current_file != nullptr, ResultFailedOpenEntity);
+
+    R_SUCCEED();
+}
+
+Result IDeliveryCacheFileService::Read(Out<u64> out_buffer_size, u64 offset,
+                                       OutBuffer<BufferAttr_HipcMapAlias> out_buffer) {
+    LOG_DEBUG(Service_BCAT, "called, offset={:016X}, size={:016X}", offset, out_buffer.size());
+
+    R_UNLESS(current_file != nullptr, ResultNoOpenEntry);
+
+    *out_buffer_size = std::min<u64>(current_file->GetSize() - offset, out_buffer.size());
+    const auto buffer = current_file->ReadBytes(*out_buffer_size, offset);
+    memcpy(out_buffer.data(), buffer.data(), buffer.size());
+
+    R_SUCCEED();
+}
+
+Result IDeliveryCacheFileService::GetSize(Out<u64> out_size) {
+    LOG_DEBUG(Service_BCAT, "called");
+
+    R_UNLESS(current_file != nullptr, ResultNoOpenEntry);
+
+    *out_size = current_file->GetSize();
+    R_SUCCEED();
+}
+
+Result IDeliveryCacheFileService::GetDigest(Out<BcatDigest> out_digest) {
+    LOG_DEBUG(Service_BCAT, "called");
+
+    R_UNLESS(current_file != nullptr, ResultNoOpenEntry);
+
+    //*out_digest = DigestFile(current_file);
+    R_SUCCEED();
+}
+
+} // namespace Service::BCAT

src/core/hle/service/bcat/delivery_cache_file_service.h

@@ -0,0 +1,33 @@
+// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include "core/file_sys/vfs/vfs.h"
+#include "core/hle/service/bcat/bcat_types.h"
+#include "core/hle/service/cmif_types.h"
+#include "core/hle/service/service.h"
+
+namespace Core {
+class System;
+}
+
+namespace Service::BCAT {
+
+class IDeliveryCacheFileService final : public ServiceFramework<IDeliveryCacheFileService> {
+public:
+    explicit IDeliveryCacheFileService(Core::System& system_, FileSys::VirtualDir root_);
+    ~IDeliveryCacheFileService() override;
+
+private:
+    Result Open(DirectoryName dir_name_raw, FileName file_name_raw);
+    Result Read(Out<u64> out_buffer_size, u64 offset,
+                OutBuffer<BufferAttr_HipcMapAlias> out_buffer);
+    Result GetSize(Out<u64> out_size);
+    Result GetDigest(Out<BcatDigest> out_digest);
+
+    FileSys::VirtualDir root;
+    FileSys::VirtualFile current_file;
+};
+
+} // namespace Service::BCAT

src/core/hle/service/bcat/delivery_cache_progress_service.cpp

@@ -0,0 +1,41 @@
+// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "core/hle/service/bcat/bcat_types.h"
+#include "core/hle/service/bcat/delivery_cache_progress_service.h"
+#include "core/hle/service/cmif_serialization.h"
+
+namespace Service::BCAT {
+
+IDeliveryCacheProgressService::IDeliveryCacheProgressService(Core::System& system_,
+                                                             Kernel::KReadableEvent& event_,
+                                                             const DeliveryCacheProgressImpl& impl_)
+    : ServiceFramework{system_, "IDeliveryCacheProgressService"}, event{event_}, impl{impl_} {
+    // clang-format off
+    static const FunctionInfo functions[] = {
+        {0, C<&IDeliveryCacheProgressService::GetEvent>, "Get"},
+        {0, C<&IDeliveryCacheProgressService::GetImpl>, "Get"},
+    };
+    // clang-format on
+
+    RegisterHandlers(functions);
+}
+
+IDeliveryCacheProgressService::~IDeliveryCacheProgressService() = default;
+
+Result IDeliveryCacheProgressService::GetEvent(OutCopyHandle<Kernel::KReadableEvent> out_event) {
+    LOG_DEBUG(Service_BCAT, "called");
+
+    *out_event = &event;
+    R_SUCCEED();
+}
+
+Result IDeliveryCacheProgressService::GetImpl(
+    OutLargeData<DeliveryCacheProgressImpl, BufferAttr_HipcPointer> out_impl) {
+    LOG_DEBUG(Service_BCAT, "called");
+
+    *out_impl = impl;
+    R_SUCCEED();
+}
+
+} // namespace Service::BCAT

src/core/hle/service/bcat/delivery_cache_progress_service.h

@@ -0,0 +1,35 @@
+// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include "core/hle/service/cmif_types.h"
+#include "core/hle/service/service.h"
+
+namespace Core {
+class System;
+}
+
+namespace Kernel {
+class KEvent;
+class KReadableEvent;
+} // namespace Kernel
+
+namespace Service::BCAT {
+struct DeliveryCacheProgressImpl;
+
+class IDeliveryCacheProgressService final : public ServiceFramework<IDeliveryCacheProgressService> {
+public:
+    explicit IDeliveryCacheProgressService(Core::System& system_, Kernel::KReadableEvent& event_,
+                                           const DeliveryCacheProgressImpl& impl_);
+    ~IDeliveryCacheProgressService() override;
+
+private:
+    Result GetEvent(OutCopyHandle<Kernel::KReadableEvent> out_event);
+    Result GetImpl(OutLargeData<DeliveryCacheProgressImpl, BufferAttr_HipcPointer> out_impl);
+
+    Kernel::KReadableEvent& event;
+    const DeliveryCacheProgressImpl& impl;
+};
+
+} // namespace Service::BCAT

src/core/hle/service/bcat/delivery_cache_storage_service.cpp

@@ -0,0 +1,57 @@
+// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "core/hle/service/bcat/bcat_result.h"
+#include "core/hle/service/bcat/delivery_cache_directory_service.h"
+#include "core/hle/service/bcat/delivery_cache_file_service.h"
+#include "core/hle/service/bcat/delivery_cache_storage_service.h"
+#include "core/hle/service/cmif_serialization.h"
+
+namespace Service::BCAT {
+
+IDeliveryCacheStorageService::IDeliveryCacheStorageService(Core::System& system_,
+                                                           FileSys::VirtualDir root_)
+    : ServiceFramework{system_, "IDeliveryCacheStorageService"}, root(std::move(root_)) {
+    // clang-format off
+    static const FunctionInfo functions[] = {
+        {0, C<&IDeliveryCacheStorageService::CreateFileService>, "CreateFileService"},
+        {1, C<&IDeliveryCacheStorageService::CreateDirectoryService>, "CreateDirectoryService"},
+        {2, C<&IDeliveryCacheStorageService::EnumerateDeliveryCacheDirectory>, "EnumerateDeliveryCacheDirectory"},
+    };
+    // clang-format on
+
+    RegisterHandlers(functions);
+}
+
+IDeliveryCacheStorageService::~IDeliveryCacheStorageService() = default;
+
+Result IDeliveryCacheStorageService::CreateFileService(
+    OutInterface<IDeliveryCacheFileService> out_interface) {
+    LOG_DEBUG(Service_BCAT, "called");
+
+    *out_interface = std::make_shared<IDeliveryCacheFileService>(system, root);
+    R_SUCCEED();
+}
+
+Result IDeliveryCacheStorageService::CreateDirectoryService(
+    OutInterface<IDeliveryCacheDirectoryService> out_interface) {
+    LOG_DEBUG(Service_BCAT, "called");
+
+    *out_interface = std::make_shared<IDeliveryCacheDirectoryService>(system, root);
+    R_SUCCEED();
+}
+
+Result IDeliveryCacheStorageService::EnumerateDeliveryCacheDirectory(
+    Out<u32> out_directories_size,
+    OutArray<DirectoryName, BufferAttr_HipcMapAlias> out_directories) {
+    LOG_DEBUG(Service_BCAT, "called, size={:016X}", out_directories.size());
+
+    *out_directories_size =
+        static_cast<u32>(std::min(out_directories.size(), entries.size() - next_read_index));
+    memcpy(out_directories.data(), entries.data() + next_read_index,
+           *out_directories_size * sizeof(DirectoryName));
+    next_read_index += *out_directories_size;
+    R_SUCCEED();
+}
+
+} // namespace Service::BCAT

src/core/hle/service/bcat/delivery_cache_storage_service.h

@@ -0,0 +1,36 @@
+// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include "core/file_sys/vfs/vfs.h"
+#include "core/hle/service/bcat/bcat_types.h"
+#include "core/hle/service/cmif_types.h"
+#include "core/hle/service/service.h"
+
+namespace Core {
+class System;
+}
+
+namespace Service::BCAT {
+class IDeliveryCacheFileService;
+class IDeliveryCacheDirectoryService;
+
+class IDeliveryCacheStorageService final : public ServiceFramework<IDeliveryCacheStorageService> {
+public:
+    explicit IDeliveryCacheStorageService(Core::System& system_, FileSys::VirtualDir root_);
+    ~IDeliveryCacheStorageService() override;
+
+private:
+    Result CreateFileService(OutInterface<IDeliveryCacheFileService> out_interface);
+    Result CreateDirectoryService(OutInterface<IDeliveryCacheDirectoryService> out_interface);
+    Result EnumerateDeliveryCacheDirectory(
+        Out<u32> out_directories_size,
+        OutArray<DirectoryName, BufferAttr_HipcMapAlias> out_directories);
+
+    FileSys::VirtualDir root;
+    std::vector<DirectoryName> entries;
+    u64 next_read_index = 0;
+};
+
+} // namespace Service::BCAT