FS: Implement MountSaveData and some of the IFile interface.
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2 changed files with 189 additions and 0 deletions
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@ -2,6 +2,7 @@
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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 <cinttypes>
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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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@ -65,10 +66,186 @@ private:
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}
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};
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class IFile final : public ServiceFramework<IFile> {
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public:
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explicit IFile(std::unique_ptr<FileSys::StorageBackend>&& backend)
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: ServiceFramework("IFile"), backend(std::move(backend)) {
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static const FunctionInfo functions[] = {
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{0, &IFile::Read, "Read"}, {1, &IFile::Write, "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 u64 unk = rp.Pop<u64>();
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const s64 offset = rp.Pop<s64>();
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const s64 length = rp.Pop<s64>();
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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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if (length < 0) {
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IPC::ResponseBuilder 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::ResponseBuilder 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::ResponseBuilder 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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ctx.WriteBuffer(output);
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IPC::ResponseBuilder rb{ctx, 4};
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rb.Push(RESULT_SUCCESS);
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rb.Push(static_cast<u64>(*res));
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}
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void Write(Kernel::HLERequestContext& ctx) {
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IPC::RequestParser rp{ctx};
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const u64 unk = rp.Pop<u64>();
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const s64 offset = rp.Pop<s64>();
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const s64 length = rp.Pop<s64>();
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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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if (length < 0) {
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IPC::ResponseBuilder 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::ResponseBuilder 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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// Write the data to the Storage backend
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std::vector<u8> data = ctx.ReadBuffer();
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ResultVal<size_t> res = backend->Write(offset, length, true, data.data());
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if (res.Failed()) {
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IPC::ResponseBuilder rb{ctx, 2};
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rb.Push(res.Code());
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return;
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}
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IPC::ResponseBuilder rb{ctx, 2};
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rb.Push(RESULT_SUCCESS);
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}
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};
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class IFileSystem final : public ServiceFramework<IFileSystem> {
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public:
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explicit IFileSystem(std::unique_ptr<FileSys::FileSystemBackend>&& backend)
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: ServiceFramework("IFileSystem"), backend(std::move(backend)) {
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static const FunctionInfo functions[] = {
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{0, &IFileSystem::CreateFile, "CreateFile"},
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{7, &IFileSystem::GetEntryType, "GetEntryType"},
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{8, &IFileSystem::OpenFile, "OpenFile"},
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{10, &IFileSystem::Commit, "Commit"},
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};
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RegisterHandlers(functions);
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}
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void CreateFile(Kernel::HLERequestContext& ctx) {
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IPC::RequestParser rp{ctx};
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auto file_buffer = ctx.ReadBuffer();
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auto end = std::find(file_buffer.begin(), file_buffer.end(), '\0');
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std::string name(file_buffer.begin(), end);
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u64 mode = rp.Pop<u64>();
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u32 size = rp.Pop<u32>();
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LOG_DEBUG(Service_FS, "called file %s mode 0x%" PRIX64 " size 0x%08X", name.c_str(), mode,
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size);
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IPC::ResponseBuilder rb{ctx, 2};
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rb.Push(backend->CreateFile(name, size));
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}
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void OpenFile(Kernel::HLERequestContext& ctx) {
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IPC::RequestParser rp{ctx};
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auto file_buffer = ctx.ReadBuffer();
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auto end = std::find(file_buffer.begin(), file_buffer.end(), '\0');
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std::string name(file_buffer.begin(), end);
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auto mode = static_cast<FileSys::Mode>(rp.Pop<u32>());
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LOG_DEBUG(Service_FS, "called file %s mode %u", name.c_str(), static_cast<u32>(mode));
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auto result = backend->OpenFile(name, mode);
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if (result.Failed()) {
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IPC::ResponseBuilder rb{ctx, 2};
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rb.Push(result.Code());
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return;
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}
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auto file = std::move(result.Unwrap());
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IPC::ResponseBuilder rb{ctx, 2, 0, 1};
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rb.Push(RESULT_SUCCESS);
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rb.PushIpcInterface<IFile>(std::move(file));
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}
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void GetEntryType(Kernel::HLERequestContext& ctx) {
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IPC::RequestParser rp{ctx};
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auto file_buffer = ctx.ReadBuffer();
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auto end = std::find(file_buffer.begin(), file_buffer.end(), '\0');
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std::string name(file_buffer.begin(), end);
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LOG_DEBUG(Service_FS, "called file %s", name.c_str());
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auto result = backend->GetEntryType(name);
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if (result.Failed()) {
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IPC::ResponseBuilder rb{ctx, 2};
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rb.Push(result.Code());
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return;
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}
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IPC::ResponseBuilder rb{ctx, 3};
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rb.Push(RESULT_SUCCESS);
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rb.Push<u32>(static_cast<u32>(*result));
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}
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void Commit(Kernel::HLERequestContext& ctx) {
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LOG_WARNING(Service_FS, "(STUBBED) called");
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IPC::ResponseBuilder rb{ctx, 2};
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rb.Push(RESULT_SUCCESS);
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}
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private:
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std::unique_ptr<FileSys::FileSystemBackend> backend;
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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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{18, &FSP_SRV::MountSdCard, "MountSdCard"},
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{51, &FSP_SRV::MountSaveData, "MountSaveData"},
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{200, &FSP_SRV::OpenDataStorageByCurrentProcess, "OpenDataStorageByCurrentProcess"},
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{202, nullptr, "OpenDataStorageByDataId"},
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{203, &FSP_SRV::OpenRomStorage, "OpenRomStorage"},
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@ -102,6 +279,17 @@ void FSP_SRV::MountSdCard(Kernel::HLERequestContext& ctx) {
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rb.Push(RESULT_SUCCESS);
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}
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void FSP_SRV::MountSaveData(Kernel::HLERequestContext& ctx) {
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LOG_WARNING(Service_FS, "(STUBBED) called");
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FileSys::Path unused;
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auto filesystem = OpenFileSystem(Type::SaveData, unused).Unwrap();
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IPC::ResponseBuilder rb{ctx, 2, 0, 1};
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rb.Push(RESULT_SUCCESS);
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rb.PushIpcInterface<IFileSystem>(std::move(filesystem));
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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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@ -24,6 +24,7 @@ private:
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void Initalize(Kernel::HLERequestContext& ctx);
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void MountSdCard(Kernel::HLERequestContext& ctx);
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void MountSaveData(Kernel::HLERequestContext& ctx);
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void GetGlobalAccessLogMode(Kernel::HLERequestContext& ctx);
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void OpenDataStorageByCurrentProcess(Kernel::HLERequestContext& ctx);
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void OpenRomStorage(Kernel::HLERequestContext& ctx);
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