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// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "common/logging/log.h"
#include "core/core.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>();
const auto& descriptor = ctx.BufferDescriptorB()[0];
LOG_DEBUG(Service_FS, "called, offset=0x%llx, length=0x%llx", offset, length);
// Error checking
ASSERT_MSG(length == descriptor.Size(), "unexpected size difference");
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
Memory::WriteBlock(descriptor.Address(), output.data(), descriptor.Size());
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(RESULT_SUCCESS);
}
};
FSP_SRV::FSP_SRV() : ServiceFramework("fsp-srv") {
static const FunctionInfo functions[] = {
{1, &FSP_SRV::Initalize, "Initalize"},
{200, &FSP_SRV::OpenDataStorageByCurrentProcess, "OpenDataStorageByCurrentProcess"},
{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::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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