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// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <cinttypes>
#include "common/logging/log.h"
#include "core/core.h"
#include "core/file_sys/directory.h"
#include "core/file_sys/filesystem.h"
#include "core/file_sys/storage.h"
#include "core/hle/ipc_helpers.h"
#include "core/hle/kernel/client_port.h"
#include "core/hle/kernel/client_session.h"
#include "core/hle/service/filesystem/filesystem.h"
#include "core/hle/service/filesystem/fsp_srv.h"
namespace Service {
namespace FileSystem {
class IStorage final : public ServiceFramework<IStorage> {
public:
IStorage(std::unique_ptr<FileSys::StorageBackend>&& backend)
: ServiceFramework("IStorage"), backend(std::move(backend)) {
static const FunctionInfo functions[] = {
{0, &IStorage::Read, "Read"}, {1, nullptr, "Write"}, {2, nullptr, "Flush"},
{3, nullptr, "SetSize"}, {4, nullptr, "GetSize"},
};
RegisterHandlers(functions);
}
private:
std::unique_ptr<FileSys::StorageBackend> backend;
void Read(Kernel::HLERequestContext& ctx) {
IPC::RequestParser rp{ctx};
const s64 offset = rp.Pop<s64>();
const s64 length = rp.Pop<s64>();
LOG_DEBUG(Service_FS, "called, offset=0x%llx, length=0x%llx", offset, length);
// Error checking
if (length < 0) {
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(ResultCode(ErrorModule::FS, ErrorDescription::InvalidLength));
return;
}
if (offset < 0) {
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(ResultCode(ErrorModule::FS, ErrorDescription::InvalidOffset));
return;
}
// Read the data from the Storage backend
std::vector<u8> output(length);
ResultVal<size_t> res = backend->Read(offset, length, output.data());
if (res.Failed()) {
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(res.Code());
return;
}
// Write the data to memory
ctx.WriteBuffer(output);
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(RESULT_SUCCESS);
}
};
class IFile final : public ServiceFramework<IFile> {
public:
explicit IFile(std::unique_ptr<FileSys::StorageBackend>&& backend)
: ServiceFramework("IFile"), backend(std::move(backend)) {
static const FunctionInfo functions[] = {
{0, &IFile::Read, "Read"}, {1, &IFile::Write, "Write"}, {2, nullptr, "Flush"},
{3, nullptr, "SetSize"}, {4, nullptr, "GetSize"},
};
RegisterHandlers(functions);
}
private:
std::unique_ptr<FileSys::StorageBackend> backend;
void Read(Kernel::HLERequestContext& ctx) {
IPC::RequestParser rp{ctx};
const u64 unk = rp.Pop<u64>();
const s64 offset = rp.Pop<s64>();
const s64 length = rp.Pop<s64>();
LOG_DEBUG(Service_FS, "called, offset=0x%llx, length=0x%llx", offset, length);
// Error checking
if (length < 0) {
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(ResultCode(ErrorModule::FS, ErrorDescription::InvalidLength));
return;
}
if (offset < 0) {
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(ResultCode(ErrorModule::FS, ErrorDescription::InvalidOffset));
return;
}
// Read the data from the Storage backend
std::vector<u8> output(length);
ResultVal<size_t> res = backend->Read(offset, length, output.data());
if (res.Failed()) {
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(res.Code());
return;
}
// Write the data to memory
ctx.WriteBuffer(output);
IPC::ResponseBuilder rb{ctx, 4};
rb.Push(RESULT_SUCCESS);
rb.Push(static_cast<u64>(*res));
}
void Write(Kernel::HLERequestContext& ctx) {
IPC::RequestParser rp{ctx};
const u64 unk = rp.Pop<u64>();
const s64 offset = rp.Pop<s64>();
const s64 length = rp.Pop<s64>();
LOG_DEBUG(Service_FS, "called, offset=0x%llx, length=0x%llx", offset, length);
// Error checking
if (length < 0) {
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(ResultCode(ErrorModule::FS, ErrorDescription::InvalidLength));
return;
}
if (offset < 0) {
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(ResultCode(ErrorModule::FS, ErrorDescription::InvalidOffset));
return;
}
// Write the data to the Storage backend
std::vector<u8> data = ctx.ReadBuffer();
ResultVal<size_t> res = backend->Write(offset, length, true, data.data());
if (res.Failed()) {
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(res.Code());
return;
}
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(RESULT_SUCCESS);
}
};
class IDirectory final : public ServiceFramework<IDirectory> {
public:
explicit IDirectory(std::unique_ptr<FileSys::DirectoryBackend>&& backend)
: ServiceFramework("IDirectory"), backend(std::move(backend)) {
static const FunctionInfo functions[] = {
{0, &IDirectory::Read, "Read"},
{1, &IDirectory::GetEntryCount, "GetEntryCount"},
};
RegisterHandlers(functions);
}
private:
std::unique_ptr<FileSys::DirectoryBackend> backend;
void Read(Kernel::HLERequestContext& ctx) {
IPC::RequestParser rp{ctx};
const u64 unk = rp.Pop<u64>();
LOG_DEBUG(Service_FS, "called, unk=0x%llx", unk);
// Calculate how many entries we can fit in the output buffer
u64 count_entries = ctx.GetWriteBufferSize() / sizeof(FileSys::Entry);
// Read the data from the Directory backend
std::vector<FileSys::Entry> entries(count_entries);
u64 read_entries = backend->Read(count_entries, entries.data());
// Convert the data into a byte array
std::vector<u8> output(entries.size() * sizeof(FileSys::Entry));
std::memcpy(output.data(), entries.data(), output.size());
// Write the data to memory
ctx.WriteBuffer(output);
IPC::ResponseBuilder rb{ctx, 4};
rb.Push(RESULT_SUCCESS);
rb.Push(read_entries);
}
void GetEntryCount(Kernel::HLERequestContext& ctx) {
LOG_DEBUG(Service_FS, "called");
u64 count = backend->GetEntryCount();
IPC::ResponseBuilder rb{ctx, 4};
rb.Push(RESULT_SUCCESS);
rb.Push(count);
}
};
class IFileSystem final : public ServiceFramework<IFileSystem> {
public:
explicit IFileSystem(std::unique_ptr<FileSys::FileSystemBackend>&& backend)
: ServiceFramework("IFileSystem"), backend(std::move(backend)) {
static const FunctionInfo functions[] = {
{0, &IFileSystem::CreateFile, "CreateFile"},
{7, &IFileSystem::GetEntryType, "GetEntryType"},
{8, &IFileSystem::OpenFile, "OpenFile"},
{9, &IFileSystem::OpenDirectory, "OpenDirectory"},
{10, &IFileSystem::Commit, "Commit"},
};
RegisterHandlers(functions);
}
void CreateFile(Kernel::HLERequestContext& ctx) {
IPC::RequestParser rp{ctx};
auto file_buffer = ctx.ReadBuffer();
auto end = std::find(file_buffer.begin(), file_buffer.end(), '\0');
std::string name(file_buffer.begin(), end);
u64 mode = rp.Pop<u64>();
u32 size = rp.Pop<u32>();
LOG_DEBUG(Service_FS, "called file %s mode 0x%" PRIX64 " size 0x%08X", name.c_str(), mode,
size);
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(backend->CreateFile(name, size));
}
void OpenFile(Kernel::HLERequestContext& ctx) {
IPC::RequestParser rp{ctx};
auto file_buffer = ctx.ReadBuffer();
auto end = std::find(file_buffer.begin(), file_buffer.end(), '\0');
std::string name(file_buffer.begin(), end);
auto mode = static_cast<FileSys::Mode>(rp.Pop<u32>());
LOG_DEBUG(Service_FS, "called file %s mode %u", name.c_str(), static_cast<u32>(mode));
auto result = backend->OpenFile(name, mode);
if (result.Failed()) {
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(result.Code());
return;
}
auto file = std::move(result.Unwrap());
IPC::ResponseBuilder rb{ctx, 2, 0, 1};
rb.Push(RESULT_SUCCESS);
rb.PushIpcInterface<IFile>(std::move(file));
}
void OpenDirectory(Kernel::HLERequestContext& ctx) {
IPC::RequestParser rp{ctx};
auto file_buffer = ctx.ReadBuffer();
auto end = std::find(file_buffer.begin(), file_buffer.end(), '\0');
std::string name(file_buffer.begin(), end);
// TODO(Subv): Implement this filter.
u32 filter_flags = rp.Pop<u32>();
LOG_DEBUG(Service_FS, "called directory %s filter %u", name.c_str(), filter_flags);
auto result = backend->OpenDirectory(name);
if (result.Failed()) {
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(result.Code());
return;
}
auto directory = std::move(result.Unwrap());
IPC::ResponseBuilder rb{ctx, 2, 0, 1};
rb.Push(RESULT_SUCCESS);
rb.PushIpcInterface<IDirectory>(std::move(directory));
}
void GetEntryType(Kernel::HLERequestContext& ctx) {
IPC::RequestParser rp{ctx};
auto file_buffer = ctx.ReadBuffer();
auto end = std::find(file_buffer.begin(), file_buffer.end(), '\0');
std::string name(file_buffer.begin(), end);
LOG_DEBUG(Service_FS, "called file %s", name.c_str());
auto result = backend->GetEntryType(name);
if (result.Failed()) {
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(result.Code());
return;
}
IPC::ResponseBuilder rb{ctx, 3};
rb.Push(RESULT_SUCCESS);
rb.Push<u32>(static_cast<u32>(*result));
}
void Commit(Kernel::HLERequestContext& ctx) {
LOG_WARNING(Service_FS, "(STUBBED) called");
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(RESULT_SUCCESS);
}
private:
std::unique_ptr<FileSys::FileSystemBackend> backend;
};
FSP_SRV::FSP_SRV() : ServiceFramework("fsp-srv") {
static const FunctionInfo functions[] = {
{1, &FSP_SRV::Initalize, "Initalize"},
{18, &FSP_SRV::MountSdCard, "MountSdCard"},
{22, &FSP_SRV::CreateSaveData, "CreateSaveData"},
{51, &FSP_SRV::MountSaveData, "MountSaveData"},
{200, &FSP_SRV::OpenDataStorageByCurrentProcess, "OpenDataStorageByCurrentProcess"},
{202, nullptr, "OpenDataStorageByDataId"},
{203, &FSP_SRV::OpenRomStorage, "OpenRomStorage"},
{1005, &FSP_SRV::GetGlobalAccessLogMode, "GetGlobalAccessLogMode"},
};
RegisterHandlers(functions);
}
void FSP_SRV::TryLoadRomFS() {
if (romfs) {
return;
}
FileSys::Path unused;
auto res = OpenFileSystem(Type::RomFS, unused);
if (res.Succeeded()) {
romfs = std::move(res.Unwrap());
}
}
void FSP_SRV::Initalize(Kernel::HLERequestContext& ctx) {
LOG_WARNING(Service_FS, "(STUBBED) called");
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(RESULT_SUCCESS);
}
void FSP_SRV::MountSdCard(Kernel::HLERequestContext& ctx) {
LOG_DEBUG(Service_FS, "called");
FileSys::Path unused;
auto filesystem = OpenFileSystem(Type::SDMC, unused).Unwrap();
IPC::ResponseBuilder rb{ctx, 2, 0, 1};
rb.Push(RESULT_SUCCESS);
rb.PushIpcInterface<IFileSystem>(std::move(filesystem));
}
void FSP_SRV::CreateSaveData(Kernel::HLERequestContext& ctx) {
IPC::RequestParser rp{ctx};
auto save_struct = rp.PopRaw<std::array<u8, 0x40>>();
auto save_create_struct = rp.PopRaw<std::array<u8, 0x40>>();
u128 uid = rp.PopRaw<u128>();
LOG_WARNING(Service_FS, "(STUBBED) called uid = %016" PRIX64 "%016" PRIX64, uid[1], uid[0]);
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(RESULT_SUCCESS);
}
void FSP_SRV::MountSaveData(Kernel::HLERequestContext& ctx) {
LOG_WARNING(Service_FS, "(STUBBED) called");
FileSys::Path unused;
auto filesystem = OpenFileSystem(Type::SaveData, unused).Unwrap();
IPC::ResponseBuilder rb{ctx, 2, 0, 1};
rb.Push(RESULT_SUCCESS);
rb.PushIpcInterface<IFileSystem>(std::move(filesystem));
}
void FSP_SRV::GetGlobalAccessLogMode(Kernel::HLERequestContext& ctx) {
LOG_WARNING(Service_FS, "(STUBBED) called");
IPC::ResponseBuilder rb{ctx, 3};
rb.Push(RESULT_SUCCESS);
rb.Push<u32>(5);
}
void FSP_SRV::OpenDataStorageByCurrentProcess(Kernel::HLERequestContext& ctx) {
LOG_DEBUG(Service_FS, "called");
TryLoadRomFS();
if (!romfs) {
// TODO (bunnei): Find the right error code to use here
LOG_CRITICAL(Service_FS, "no file system interface available!");
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(ResultCode(-1));
return;
}
// Attempt to open a StorageBackend interface to the RomFS
auto storage = romfs->OpenFile({}, {});
if (storage.Failed()) {
LOG_CRITICAL(Service_FS, "no storage interface available!");
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(storage.Code());
return;
}
IPC::ResponseBuilder rb{ctx, 2, 0, 1};
rb.Push(RESULT_SUCCESS);
rb.PushIpcInterface<IStorage>(std::move(storage.Unwrap()));
}
void FSP_SRV::OpenRomStorage(Kernel::HLERequestContext& ctx) {
LOG_WARNING(Service_FS, "(STUBBED) called, using OpenDataStorageByCurrentProcess");
OpenDataStorageByCurrentProcess(ctx);
}
} // namespace FileSystem
} // namespace Service
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