1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include <memory>
#include "common/assert.h"
#include "common/common_types.h"
#include "common/logging/log.h"
#include "common/uuid.h"
#include "core/core.h"
#include "core/file_sys/savedata_factory.h"
#include "core/file_sys/vfs/vfs.h"
namespace FileSys {
namespace {
bool ShouldSaveDataBeAutomaticallyCreated(SaveDataSpaceId space, const SaveDataAttribute& attr) {
return attr.type == SaveDataType::Cache || attr.type == SaveDataType::Temporary ||
(space == SaveDataSpaceId::User && ///< Normal Save Data -- Current Title & User
(attr.type == SaveDataType::Account || attr.type == SaveDataType::Device) &&
attr.program_id == 0 && attr.system_save_data_id == 0);
}
std::string GetFutureSaveDataPath(SaveDataSpaceId space_id, SaveDataType type, u64 title_id,
u128 user_id) {
// Only detect nand user saves.
const auto space_id_path = [space_id]() -> std::string_view {
switch (space_id) {
case SaveDataSpaceId::User:
return "/user/save";
default:
return "";
}
}();
if (space_id_path.empty()) {
return "";
}
Common::UUID uuid;
std::memcpy(uuid.uuid.data(), user_id.data(), sizeof(Common::UUID));
// Only detect account/device saves from the future location.
switch (type) {
case SaveDataType::Account:
return fmt::format("{}/account/{}/{:016X}/0", space_id_path, uuid.RawString(), title_id);
case SaveDataType::Device:
return fmt::format("{}/device/{:016X}/0", space_id_path, title_id);
default:
return "";
}
}
} // Anonymous namespace
SaveDataFactory::SaveDataFactory(Core::System& system_, ProgramId program_id_,
VirtualDir save_directory_)
: system{system_}, program_id{program_id_}, dir{std::move(save_directory_)} {
// Delete all temporary storages
// On hardware, it is expected that temporary storage be empty at first use.
dir->DeleteSubdirectoryRecursive("temp");
}
SaveDataFactory::~SaveDataFactory() = default;
VirtualDir SaveDataFactory::Create(SaveDataSpaceId space, const SaveDataAttribute& meta) const {
const auto save_directory = GetFullPath(program_id, dir, space, meta.type, meta.program_id,
meta.user_id, meta.system_save_data_id);
return dir->CreateDirectoryRelative(save_directory);
}
VirtualDir SaveDataFactory::Open(SaveDataSpaceId space, const SaveDataAttribute& meta) const {
const auto save_directory = GetFullPath(program_id, dir, space, meta.type, meta.program_id,
meta.user_id, meta.system_save_data_id);
auto out = dir->GetDirectoryRelative(save_directory);
if (out == nullptr && (ShouldSaveDataBeAutomaticallyCreated(space, meta) && auto_create)) {
return Create(space, meta);
}
return out;
}
VirtualDir SaveDataFactory::GetSaveDataSpaceDirectory(SaveDataSpaceId space) const {
return dir->GetDirectoryRelative(GetSaveDataSpaceIdPath(space));
}
std::string SaveDataFactory::GetSaveDataSpaceIdPath(SaveDataSpaceId space) {
switch (space) {
case SaveDataSpaceId::System:
return "/system/";
case SaveDataSpaceId::User:
return "/user/";
case SaveDataSpaceId::Temporary:
return "/temp/";
default:
ASSERT_MSG(false, "Unrecognized SaveDataSpaceId: {:02X}", static_cast<u8>(space));
return "/unrecognized/"; ///< To prevent corruption when ignoring asserts.
}
}
std::string SaveDataFactory::GetFullPath(ProgramId program_id, VirtualDir dir,
SaveDataSpaceId space, SaveDataType type, u64 title_id,
u128 user_id, u64 save_id) {
// According to switchbrew, if a save is of type SaveData and the title id field is 0, it should
// be interpreted as the title id of the current process.
if (type == SaveDataType::Account || type == SaveDataType::Device) {
if (title_id == 0) {
title_id = program_id;
}
}
// For compat with a future impl.
if (std::string future_path =
GetFutureSaveDataPath(space, type, title_id & ~(0xFFULL), user_id);
!future_path.empty()) {
// Check if this location exists, and prefer it over the old.
if (const auto future_dir = dir->GetDirectoryRelative(future_path); future_dir != nullptr) {
LOG_INFO(Service_FS, "Using save at new location: {}", future_path);
return future_path;
}
}
std::string out = GetSaveDataSpaceIdPath(space);
switch (type) {
case SaveDataType::System:
return fmt::format("{}save/{:016X}/{:016X}{:016X}", out, save_id, user_id[1], user_id[0]);
case SaveDataType::Account:
case SaveDataType::Device:
return fmt::format("{}save/{:016X}/{:016X}{:016X}/{:016X}", out, 0, user_id[1], user_id[0],
title_id);
case SaveDataType::Temporary:
return fmt::format("{}{:016X}/{:016X}{:016X}/{:016X}", out, 0, user_id[1], user_id[0],
title_id);
case SaveDataType::Cache:
return fmt::format("{}save/cache/{:016X}", out, title_id);
default:
ASSERT_MSG(false, "Unrecognized SaveDataType: {:02X}", static_cast<u8>(type));
return fmt::format("{}save/unknown_{:X}/{:016X}", out, static_cast<u8>(type), title_id);
}
}
std::string SaveDataFactory::GetUserGameSaveDataRoot(u128 user_id, bool future) {
if (future) {
Common::UUID uuid;
std::memcpy(uuid.uuid.data(), user_id.data(), sizeof(Common::UUID));
return fmt::format("/user/save/account/{}", uuid.RawString());
}
return fmt::format("/user/save/{:016X}/{:016X}{:016X}", 0, user_id[1], user_id[0]);
}
SaveDataSize SaveDataFactory::ReadSaveDataSize(SaveDataType type, u64 title_id,
u128 user_id) const {
const auto path =
GetFullPath(program_id, dir, SaveDataSpaceId::User, type, title_id, user_id, 0);
const auto relative_dir = GetOrCreateDirectoryRelative(dir, path);
const auto size_file = relative_dir->GetFile(GetSaveDataSizeFileName());
if (size_file == nullptr || size_file->GetSize() < sizeof(SaveDataSize)) {
return {0, 0};
}
SaveDataSize out;
if (size_file->ReadObject(&out) != sizeof(SaveDataSize)) {
return {0, 0};
}
return out;
}
void SaveDataFactory::WriteSaveDataSize(SaveDataType type, u64 title_id, u128 user_id,
SaveDataSize new_value) const {
const auto path =
GetFullPath(program_id, dir, SaveDataSpaceId::User, type, title_id, user_id, 0);
const auto relative_dir = GetOrCreateDirectoryRelative(dir, path);
const auto size_file = relative_dir->CreateFile(GetSaveDataSizeFileName());
if (size_file == nullptr) {
return;
}
size_file->Resize(sizeof(SaveDataSize));
size_file->WriteObject(new_value);
}
void SaveDataFactory::SetAutoCreate(bool state) {
auto_create = state;
}
} // namespace FileSys
|
