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fsp_srv: Various improvements to IStorage:Read implementation.

This commit is contained in:
bunnei 2018-01-20 21:32:36 -05:00
parent d9a91d7678
commit 8e50d6002b
5 changed files with 79 additions and 48 deletions

View File

@ -304,6 +304,11 @@ inline u64 RequestParser::Pop() {
return msw << 32 | lsw;
}
template <>
inline s64 RequestParser::Pop() {
return static_cast<s64>(Pop<u64>());
}
template <>
inline bool RequestParser::Pop() {
return Pop<u8>() != 0;

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@ -19,6 +19,8 @@
enum class ErrorDescription : u32 {
Success = 0,
RemoteProcessDead = 301,
InvalidOffset = 6061,
InvalidLength = 6062,
};
/**

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@ -6,11 +6,20 @@
#include <memory>
#include "common/common_types.h"
#include "core/file_sys/filesystem.h"
#include "core/hle/result.h"
#include "core/hle/service/service.h"
namespace FileSys {
class FileSystemBackend;
class FileSystemFactory;
class Path;
} // namespace FileSys
namespace Service {
namespace SM {
class ServiceManager;
} // namespace SM
namespace FileSystem {
/// Supported FileSystem types
@ -37,5 +46,5 @@ ResultVal<std::unique_ptr<FileSys::FileSystemBackend>> OpenFileSystem(Type type,
/// Registers all Filesystem services with the specified service manager.
void InstallInterfaces(SM::ServiceManager& service_manager);
} // namespace Filesystem
} // namespace FileSystem
} // namespace Service

View File

@ -20,9 +20,8 @@ public:
IStorage(std::unique_ptr<FileSys::StorageBackend>&& backend)
: ServiceFramework("IStorage"), backend(std::move(backend)) {
static const FunctionInfo functions[] = {
{0, &IStorage::Read, "Read"}, {1, &IStorage::Write, "Write"},
{2, &IStorage::Flush, "Flush"}, {3, &IStorage::SetSize, "SetSize"},
{4, &IStorage::GetSize, "GetSize"},
{0, &IStorage::Read, "Read"}, {1, nullptr, "Write"}, {2, nullptr, "Flush"},
{3, nullptr, "SetSize"}, {4, nullptr, "GetSize"},
};
RegisterHandlers(functions);
}
@ -32,49 +31,40 @@ private:
void Read(Kernel::HLERequestContext& ctx) {
IPC::RequestParser rp{ctx};
u64 offset = rp.Pop<u64>();
u64 length = rp.Pop<u64>();
const s64 offset = rp.Pop<s64>();
const s64 length = rp.Pop<s64>();
const auto& descriptor = ctx.BufferDescriptorB()[0];
LOG_DEBUG(Service, "called, offset=0x%llx, length=0x%llx", offset, length);
LOG_DEBUG(Service_FS, "called, offset=0x%llx, length=0x%llx", offset, length);
auto descriptor = ctx.BufferDescriptorB()[0];
// Error checking
ASSERT_MSG(length == descriptor.Size(), "unexpected size difference");
if (length < 0) {
IPC::RequestBuilder rb{ctx, 2};
rb.Push(ResultCode(ErrorModule::FS, ErrorDescription::InvalidLength));
return;
}
if (offset < 0) {
IPC::RequestBuilder 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::RequestBuilder rb{ctx, 2};
rb.Push(res.Code());
return;
}
// Write the data to memory
Memory::WriteBlock(descriptor.Address(), output.data(), descriptor.Size());
IPC::RequestBuilder rb{ctx, 2};
rb.Push(RESULT_SUCCESS);
}
void Write(Kernel::HLERequestContext& ctx) {
IPC::RequestBuilder rb{ctx, 2};
rb.Push(RESULT_SUCCESS);
LOG_WARNING(Service, "(STUBBED) called");
}
void Flush(Kernel::HLERequestContext& ctx) {
IPC::RequestBuilder rb{ctx, 2};
rb.Push(RESULT_SUCCESS);
LOG_WARNING(Service, "(STUBBED) called");
}
void SetSize(Kernel::HLERequestContext& ctx) {
IPC::RequestBuilder rb{ctx, 2};
rb.Push(RESULT_SUCCESS);
LOG_WARNING(Service, "(STUBBED) called");
}
void GetSize(Kernel::HLERequestContext& ctx) {
IPC::RequestBuilder rb{ctx, 2};
rb.Push(RESULT_SUCCESS);
LOG_WARNING(Service, "(STUBBED) called");
}
};
FSP_SRV::FSP_SRV() : ServiceFramework("fsp-srv") {
@ -87,46 +77,62 @@ FSP_SRV::FSP_SRV() : ServiceFramework("fsp-srv") {
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::RequestBuilder rb{ctx, 2};
rb.Push(RESULT_SUCCESS);
LOG_WARNING(Service, "(STUBBED) called");
}
void FSP_SRV::GetGlobalAccessLogMode(Kernel::HLERequestContext& ctx) {
LOG_WARNING(Service_FS, "(STUBBED) called");
IPC::RequestBuilder rb{ctx, 4};
rb.Push(RESULT_SUCCESS);
rb.Push<u32>(5);
LOG_WARNING(Service, "(STUBBED) called");
}
void FSP_SRV::OpenDataStorageByCurrentProcess(Kernel::HLERequestContext& ctx) {
FileSys::Path path;
auto filesystem = OpenFileSystem(Type::RomFS, path);
if (filesystem.Failed()) {
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::RequestBuilder rb{ctx, 2};
rb.Push(filesystem.Code());
rb.Push(ResultCode(-1));
return;
}
auto storage = filesystem.Unwrap()->OpenFile({}, {});
// 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::RequestBuilder rb{ctx, 2};
rb.Push(storage.Code());
return;
}
// TODO: What if already opened?
IPC::RequestBuilder rb{ctx, 2, 0, 0, 1};
rb.Push(RESULT_SUCCESS);
rb.PushIpcInterface<IStorage>(std::move(storage.Unwrap()));
LOG_WARNING(Service, "(STUBBED) called");
}
void FSP_SRV::OpenRomStorage(Kernel::HLERequestContext& ctx) {
LOG_WARNING(Service_FS, "(STUBBED) called, using OpenDataStorageByCurrentProcess");
OpenDataStorageByCurrentProcess(ctx);
}
} // namespace Filesystem
} // namespace FileSystem
} // namespace Service

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@ -4,22 +4,31 @@
#pragma once
#include <memory>
#include "core/hle/service/service.h"
namespace FileSys {
class FileSystemBackend;
}
namespace Service {
namespace FileSystem {
class FSP_SRV final : public ServiceFramework<FSP_SRV> {
public:
FSP_SRV();
explicit FSP_SRV();
~FSP_SRV() = default;
private:
void TryLoadRomFS();
void Initalize(Kernel::HLERequestContext& ctx);
void GetGlobalAccessLogMode(Kernel::HLERequestContext& ctx);
void OpenDataStorageByCurrentProcess(Kernel::HLERequestContext& ctx);
void OpenRomStorage(Kernel::HLERequestContext& ctx);
std::unique_ptr<FileSys::FileSystemBackend> romfs;
};
} // namespace Filesystem
} // namespace FileSystem
} // namespace Service