forked from suyu/suyu
138 lines
4.3 KiB
C++
138 lines
4.3 KiB
C++
// Copyright 2018 yuzu emulator team
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include "common/logging/log.h"
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#include "core/core.h"
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#include "core/file_sys/filesystem.h"
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#include "core/file_sys/storage.h"
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#include "core/hle/ipc_helpers.h"
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#include "core/hle/kernel/client_port.h"
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#include "core/hle/kernel/client_session.h"
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#include "core/hle/service/filesystem/filesystem.h"
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#include "core/hle/service/filesystem/fsp_srv.h"
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namespace Service {
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namespace FileSystem {
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class IStorage final : public ServiceFramework<IStorage> {
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public:
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IStorage(std::unique_ptr<FileSys::StorageBackend>&& backend)
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: ServiceFramework("IStorage"), backend(std::move(backend)) {
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static const FunctionInfo functions[] = {
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{0, &IStorage::Read, "Read"}, {1, nullptr, "Write"}, {2, nullptr, "Flush"},
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{3, nullptr, "SetSize"}, {4, nullptr, "GetSize"},
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};
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RegisterHandlers(functions);
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}
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private:
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std::unique_ptr<FileSys::StorageBackend> backend;
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void Read(Kernel::HLERequestContext& ctx) {
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IPC::RequestParser rp{ctx};
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const s64 offset = rp.Pop<s64>();
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const s64 length = rp.Pop<s64>();
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const auto& descriptor = ctx.BufferDescriptorB()[0];
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LOG_DEBUG(Service_FS, "called, offset=0x%llx, length=0x%llx", offset, length);
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// Error checking
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ASSERT_MSG(length == descriptor.Size(), "unexpected size difference");
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if (length < 0) {
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IPC::RequestBuilder rb{ctx, 2};
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rb.Push(ResultCode(ErrorModule::FS, ErrorDescription::InvalidLength));
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return;
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}
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if (offset < 0) {
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IPC::RequestBuilder rb{ctx, 2};
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rb.Push(ResultCode(ErrorModule::FS, ErrorDescription::InvalidOffset));
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return;
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}
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// Read the data from the Storage backend
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std::vector<u8> output(length);
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ResultVal<size_t> res = backend->Read(offset, length, output.data());
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if (res.Failed()) {
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IPC::RequestBuilder rb{ctx, 2};
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rb.Push(res.Code());
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return;
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}
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// Write the data to memory
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Memory::WriteBlock(descriptor.Address(), output.data(), descriptor.Size());
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IPC::RequestBuilder rb{ctx, 2};
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rb.Push(RESULT_SUCCESS);
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}
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};
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FSP_SRV::FSP_SRV() : ServiceFramework("fsp-srv") {
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static const FunctionInfo functions[] = {
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{1, &FSP_SRV::Initalize, "Initalize"},
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{200, &FSP_SRV::OpenDataStorageByCurrentProcess, "OpenDataStorageByCurrentProcess"},
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{203, &FSP_SRV::OpenRomStorage, "OpenRomStorage"},
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{1005, &FSP_SRV::GetGlobalAccessLogMode, "GetGlobalAccessLogMode"},
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};
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RegisterHandlers(functions);
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}
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void FSP_SRV::TryLoadRomFS() {
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if (romfs) {
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return;
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}
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FileSys::Path unused;
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auto res = OpenFileSystem(Type::RomFS, unused);
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if (res.Succeeded()) {
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romfs = std::move(res.Unwrap());
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}
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}
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void FSP_SRV::Initalize(Kernel::HLERequestContext& ctx) {
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LOG_WARNING(Service_FS, "(STUBBED) called");
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IPC::RequestBuilder rb{ctx, 2};
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rb.Push(RESULT_SUCCESS);
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}
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void FSP_SRV::GetGlobalAccessLogMode(Kernel::HLERequestContext& ctx) {
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LOG_WARNING(Service_FS, "(STUBBED) called");
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IPC::RequestBuilder rb{ctx, 4};
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rb.Push(RESULT_SUCCESS);
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rb.Push<u32>(5);
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}
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void FSP_SRV::OpenDataStorageByCurrentProcess(Kernel::HLERequestContext& ctx) {
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LOG_DEBUG(Service_FS, "called");
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TryLoadRomFS();
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if (!romfs) {
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// TODO (bunnei): Find the right error code to use here
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LOG_CRITICAL(Service_FS, "no file system interface available!");
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IPC::RequestBuilder rb{ctx, 2};
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rb.Push(ResultCode(-1));
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return;
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}
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// Attempt to open a StorageBackend interface to the RomFS
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auto storage = romfs->OpenFile({}, {});
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if (storage.Failed()) {
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LOG_CRITICAL(Service_FS, "no storage interface available!");
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IPC::RequestBuilder rb{ctx, 2};
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rb.Push(storage.Code());
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return;
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}
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IPC::RequestBuilder rb{ctx, 2, 0, 0, 1};
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rb.Push(RESULT_SUCCESS);
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rb.PushIpcInterface<IStorage>(std::move(storage.Unwrap()));
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}
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void FSP_SRV::OpenRomStorage(Kernel::HLERequestContext& ctx) {
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LOG_WARNING(Service_FS, "(STUBBED) called, using OpenDataStorageByCurrentProcess");
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OpenDataStorageByCurrentProcess(ctx);
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}
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} // namespace FileSystem
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} // namespace Service
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