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FileSys: abstract SD save data archive source

This commit is contained in:
wwylele 2016-11-28 23:47:41 +02:00
parent 3174bfd50c
commit 5af117e00c
6 changed files with 136 additions and 79 deletions
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2
src/core/CMakeLists.txt
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@ -22,6 +22,7 @@ set(SRCS
file_sys/archive_savedata.cpp
file_sys/archive_sdmc.cpp
file_sys/archive_sdmcwriteonly.cpp
file_sys/archive_source_sd_savedata.cpp
file_sys/archive_systemsavedata.cpp
file_sys/disk_archive.cpp
file_sys/ivfc_archive.cpp
@ -167,6 +168,7 @@ set(HEADERS
file_sys/archive_savedata.h
file_sys/archive_sdmc.h
file_sys/archive_sdmcwriteonly.h
file_sys/archive_source_sd_savedata.h
file_sys/archive_systemsavedata.h
file_sys/directory_backend.h
file_sys/disk_archive.h

79
src/core/file_sys/archive_savedata.cpp
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@ -2,96 +2,29 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include <memory>
#include "common/common_types.h"
#include "common/file_util.h"
#include "common/logging/log.h"
#include "common/string_util.h"
#include "core/file_sys/archive_savedata.h"
#include "core/file_sys/savedata_archive.h"
#include "core/hle/kernel/process.h"
#include "core/hle/service/fs/archive.h"
////////////////////////////////////////////////////////////////////////////////////////////////////
// FileSys namespace
namespace FileSys {
static std::string GetSaveDataContainerPath(const std::string& sdmc_directory) {
return Common::StringFromFormat("%sNintendo 3DS/%s/%s/title/", sdmc_directory.c_str(),
SYSTEM_ID.c_str(), SDCARD_ID.c_str());
}
static std::string GetSaveDataPath(const std::string& mount_location, u64 program_id) {
u32 high = (u32)(program_id >> 32);
u32 low = (u32)(program_id & 0xFFFFFFFF);
return Common::StringFromFormat("%s%08x/%08x/data/00000001/", mount_location.c_str(), high,
low);
}
static std::string GetSaveDataMetadataPath(const std::string& mount_location, u64 program_id) {
u32 high = (u32)(program_id >> 32);
u32 low = (u32)(program_id & 0xFFFFFFFF);
return Common::StringFromFormat("%s%08x/%08x/data/00000001.metadata", mount_location.c_str(),
high, low);
}
ArchiveFactory_SaveData::ArchiveFactory_SaveData(const std::string& sdmc_directory)
: mount_point(GetSaveDataContainerPath(sdmc_directory)) {
LOG_INFO(Service_FS, "Directory %s set as SaveData.", this->mount_point.c_str());
}
ArchiveFactory_SaveData::ArchiveFactory_SaveData(
std::shared_ptr<ArchiveSource_SDSaveData> sd_savedata)
: sd_savedata_source(sd_savedata) {}
ResultVal<std::unique_ptr<ArchiveBackend>> ArchiveFactory_SaveData::Open(const Path& path) {
std::string concrete_mount_point =
GetSaveDataPath(mount_point, Kernel::g_current_process->codeset->program_id);
if (!FileUtil::Exists(concrete_mount_point)) {
// When a SaveData archive is created for the first time, it is not yet formatted and the
// save file/directory structure expected by the game has not yet been initialized.
// Returning the NotFormatted error code will signal the game to provision the SaveData
// archive with the files and folders that it expects.
return ResultCode(ErrorDescription::FS_NotFormatted, ErrorModule::FS,
ErrorSummary::InvalidState, ErrorLevel::Status);
}
auto archive = std::make_unique<SaveDataArchive>(std::move(concrete_mount_point));
return MakeResult<std::unique_ptr<ArchiveBackend>>(std::move(archive));
return sd_savedata_source->Open(Kernel::g_current_process->codeset->program_id);
}
ResultCode ArchiveFactory_SaveData::Format(const Path& path,
const FileSys::ArchiveFormatInfo& format_info) {
std::string concrete_mount_point =
GetSaveDataPath(mount_point, Kernel::g_current_process->codeset->program_id);
FileUtil::DeleteDirRecursively(concrete_mount_point);
FileUtil::CreateFullPath(concrete_mount_point);
// Write the format metadata
std::string metadata_path =
GetSaveDataMetadataPath(mount_point, Kernel::g_current_process->codeset->program_id);
FileUtil::IOFile file(metadata_path, "wb");
if (file.IsOpen()) {
file.WriteBytes(&format_info, sizeof(format_info));
return RESULT_SUCCESS;
}
return RESULT_SUCCESS;
return sd_savedata_source->Format(Kernel::g_current_process->codeset->program_id, format_info);
}
ResultVal<ArchiveFormatInfo> ArchiveFactory_SaveData::GetFormatInfo(const Path& path) const {
std::string metadata_path =
GetSaveDataMetadataPath(mount_point, Kernel::g_current_process->codeset->program_id);
FileUtil::IOFile file(metadata_path, "rb");
if (!file.IsOpen()) {
LOG_ERROR(Service_FS, "Could not open metadata information for archive");
// TODO(Subv): Verify error code
return ResultCode(ErrorDescription::FS_NotFormatted, ErrorModule::FS,
ErrorSummary::InvalidState, ErrorLevel::Status);
}
ArchiveFormatInfo info = {};
file.ReadBytes(&info, sizeof(info));
return MakeResult<ArchiveFormatInfo>(info);
return sd_savedata_source->GetFormatInfo(Kernel::g_current_process->codeset->program_id);
}
} // namespace FileSys

8
src/core/file_sys/archive_savedata.h
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@ -4,10 +4,7 @@
#pragma once
#include <memory>
#include <string>
#include "core/file_sys/archive_backend.h"
#include "core/hle/result.h"
#include "core/file_sys/archive_source_sd_savedata.h"
////////////////////////////////////////////////////////////////////////////////////////////////////
// FileSys namespace
@ -17,7 +14,7 @@ namespace FileSys {
/// File system interface to the SaveData archive
class ArchiveFactory_SaveData final : public ArchiveFactory {
public:
ArchiveFactory_SaveData(const std::string& mount_point);
explicit ArchiveFactory_SaveData(std::shared_ptr<ArchiveSource_SDSaveData> sd_savedata_source);
std::string GetName() const override {
return "SaveData";
@ -30,6 +27,7 @@ public:
private:
std::string mount_point;
std::shared_ptr<ArchiveSource_SDSaveData> sd_savedata_source;
};
} // namespace FileSys

93
src/core/file_sys/archive_source_sd_savedata.cpp Normal file
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@ -0,0 +1,93 @@
// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "common/file_util.h"
#include "common/logging/log.h"
#include "common/string_util.h"
#include "core/file_sys/archive_source_sd_savedata.h"
#include "core/file_sys/savedata_archive.h"
#include "core/hle/service/fs/archive.h"
////////////////////////////////////////////////////////////////////////////////////////////////////
// FileSys namespace
namespace FileSys {
namespace {
std::string GetSaveDataContainerPath(const std::string& sdmc_directory) {
return Common::StringFromFormat("%sNintendo 3DS/%s/%s/title/", sdmc_directory.c_str(),
SYSTEM_ID.c_str(), SDCARD_ID.c_str());
}
std::string GetSaveDataPath(const std::string& mount_location, u64 program_id) {
u32 high = static_cast<u32>(program_id >> 32);
u32 low = static_cast<u32>(program_id & 0xFFFFFFFF);
return Common::StringFromFormat("%s%08x/%08x/data/00000001/", mount_location.c_str(), high,
low);
}
std::string GetSaveDataMetadataPath(const std::string& mount_location, u64 program_id) {
u32 high = static_cast<u32>(program_id >> 32);
u32 low = static_cast<u32>(program_id & 0xFFFFFFFF);
return Common::StringFromFormat("%s%08x/%08x/data/00000001.metadata", mount_location.c_str(),
high, low);
}
} // namespace
ArchiveSource_SDSaveData::ArchiveSource_SDSaveData(const std::string& sdmc_directory)
: mount_point(GetSaveDataContainerPath(sdmc_directory)) {
LOG_INFO(Service_FS, "Directory %s set as SaveData.", mount_point.c_str());
}
ResultVal<std::unique_ptr<ArchiveBackend>> ArchiveSource_SDSaveData::Open(u64 program_id) {
std::string concrete_mount_point = GetSaveDataPath(mount_point, program_id);
if (!FileUtil::Exists(concrete_mount_point)) {
// When a SaveData archive is created for the first time, it is not yet formatted and the
// save file/directory structure expected by the game has not yet been initialized.
// Returning the NotFormatted error code will signal the game to provision the SaveData
// archive with the files and folders that it expects.
return ResultCode(ErrorDescription::FS_NotFormatted, ErrorModule::FS,
ErrorSummary::InvalidState, ErrorLevel::Status);
}
auto archive = std::make_unique<SaveDataArchive>(std::move(concrete_mount_point));
return MakeResult<std::unique_ptr<ArchiveBackend>>(std::move(archive));
}
ResultCode ArchiveSource_SDSaveData::Format(u64 program_id,
const FileSys::ArchiveFormatInfo& format_info) {
std::string concrete_mount_point = GetSaveDataPath(mount_point, program_id);
FileUtil::DeleteDirRecursively(concrete_mount_point);
FileUtil::CreateFullPath(concrete_mount_point);
// Write the format metadata
std::string metadata_path = GetSaveDataMetadataPath(mount_point, program_id);
FileUtil::IOFile file(metadata_path, "wb");
if (file.IsOpen()) {
file.WriteBytes(&format_info, sizeof(format_info));
return RESULT_SUCCESS;
}
return RESULT_SUCCESS;
}
ResultVal<ArchiveFormatInfo> ArchiveSource_SDSaveData::GetFormatInfo(u64 program_id) const {
std::string metadata_path = GetSaveDataMetadataPath(mount_point, program_id);
FileUtil::IOFile file(metadata_path, "rb");
if (!file.IsOpen()) {
LOG_ERROR(Service_FS, "Could not open metadata information for archive");
// TODO(Subv): Verify error code
return ResultCode(ErrorDescription::FS_NotFormatted, ErrorModule::FS,
ErrorSummary::InvalidState, ErrorLevel::Status);
}
ArchiveFormatInfo info = {};
file.ReadBytes(&info, sizeof(info));
return MakeResult<ArchiveFormatInfo>(info);
}
} // namespace FileSys

30
src/core/file_sys/archive_source_sd_savedata.h Normal file
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@ -0,0 +1,30 @@
// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <memory>
#include <string>
#include "core/file_sys/archive_backend.h"
#include "core/hle/result.h"
////////////////////////////////////////////////////////////////////////////////////////////////////
// FileSys namespace
namespace FileSys {
/// A common source of SD save data archive
class ArchiveSource_SDSaveData {
public:
explicit ArchiveSource_SDSaveData(const std::string& mount_point);
ResultVal<std::unique_ptr<ArchiveBackend>> Open(u64 program_id);
ResultCode Format(u64 program_id, const FileSys::ArchiveFormatInfo& format_info);
ResultVal<ArchiveFormatInfo> GetFormatInfo(u64 program_id) const;
private:
std::string mount_point;
};
} // namespace FileSys

3
src/core/hle/service/fs/archive.cpp
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@ -535,7 +535,8 @@ void RegisterArchiveTypes() {
sdmc_directory.c_str());
// Create the SaveData archive
auto savedata_factory = std::make_unique<FileSys::ArchiveFactory_SaveData>(sdmc_directory);
auto sd_savedata_source = std::make_shared<FileSys::ArchiveSource_SDSaveData>(sdmc_directory);
auto savedata_factory = std::make_unique<FileSys::ArchiveFactory_SaveData>(sd_savedata_source);
RegisterArchiveType(std::move(savedata_factory), ArchiveIdCode::SaveData);
auto extsavedata_factory =