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
|
// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "common/hex_util.h"
#include "core/file_sys/savedata_factory.h"
#include "core/hle/service/cmif_serialization.h"
#include "core/hle/service/filesystem/fsp/fs_i_save_data_info_reader.h"
#include "core/hle/service/filesystem/save_data_controller.h"
namespace Service::FileSystem {
ISaveDataInfoReader::ISaveDataInfoReader(Core::System& system_,
std::shared_ptr<SaveDataController> save_data_controller_,
FileSys::SaveDataSpaceId space)
: ServiceFramework{system_, "ISaveDataInfoReader"}, save_data_controller{
save_data_controller_} {
static const FunctionInfo functions[] = {
{0, D<&ISaveDataInfoReader::ReadSaveDataInfo>, "ReadSaveDataInfo"},
};
RegisterHandlers(functions);
FindAllSaves(space);
}
ISaveDataInfoReader::~ISaveDataInfoReader() = default;
static u64 stoull_be(std::string_view str) {
if (str.size() != 16) {
return 0;
}
const auto bytes = Common::HexStringToArray<0x8>(str);
u64 out{};
std::memcpy(&out, bytes.data(), sizeof(u64));
return Common::swap64(out);
}
Result ISaveDataInfoReader::ReadSaveDataInfo(
Out<u64> out_count, OutArray<SaveDataInfo, BufferAttr_HipcMapAlias> out_entries) {
LOG_DEBUG(Service_FS, "called");
// Calculate how many entries we can fit in the output buffer
const u64 count_entries = out_entries.size();
// Cap at total number of entries.
const u64 actual_entries = std::min(count_entries, info.size() - next_entry_index);
// Determine data start and end
const auto* begin = reinterpret_cast<u8*>(info.data() + next_entry_index);
const auto* end = reinterpret_cast<u8*>(info.data() + next_entry_index + actual_entries);
const auto range_size = static_cast<std::size_t>(std::distance(begin, end));
next_entry_index += actual_entries;
// Write the data to memory
std::memcpy(out_entries.data(), begin, range_size);
*out_count = actual_entries;
R_SUCCEED();
}
void ISaveDataInfoReader::FindAllSaves(FileSys::SaveDataSpaceId space) {
FileSys::VirtualDir save_root{};
const auto result = save_data_controller->OpenSaveDataSpace(&save_root, space);
if (result != ResultSuccess || save_root == nullptr) {
LOG_ERROR(Service_FS, "The save root for the space_id={:02X} was invalid!", space);
return;
}
for (const auto& type : save_root->GetSubdirectories()) {
if (type->GetName() == "save") {
FindNormalSaves(space, type);
} else if (space == FileSys::SaveDataSpaceId::TemporaryStorage) {
FindTemporaryStorageSaves(space, type);
}
}
}
void ISaveDataInfoReader::FindNormalSaves(FileSys::SaveDataSpaceId space,
const FileSys::VirtualDir& type) {
for (const auto& save_id : type->GetSubdirectories()) {
for (const auto& user_id : save_id->GetSubdirectories()) {
// Skip non user id subdirectories
if (user_id->GetName().size() != 0x20) {
continue;
}
const auto save_id_numeric = stoull_be(save_id->GetName());
auto user_id_numeric = Common::HexStringToArray<0x10>(user_id->GetName());
std::reverse(user_id_numeric.begin(), user_id_numeric.end());
if (save_id_numeric != 0) {
// System Save Data
info.emplace_back(SaveDataInfo{
0,
space,
FileSys::SaveDataType::SystemSaveData,
{},
user_id_numeric,
save_id_numeric,
0,
user_id->GetSize(),
{},
{},
});
continue;
}
for (const auto& title_id : user_id->GetSubdirectories()) {
const auto device = std::all_of(user_id_numeric.begin(), user_id_numeric.end(),
[](u8 val) { return val == 0; });
info.emplace_back(SaveDataInfo{
0,
space,
device ? FileSys::SaveDataType::DeviceSaveData
: FileSys::SaveDataType::SaveData,
{},
user_id_numeric,
save_id_numeric,
stoull_be(title_id->GetName()),
title_id->GetSize(),
{},
{},
});
}
}
}
}
void ISaveDataInfoReader::FindTemporaryStorageSaves(FileSys::SaveDataSpaceId space,
const FileSys::VirtualDir& type) {
for (const auto& user_id : type->GetSubdirectories()) {
// Skip non user id subdirectories
if (user_id->GetName().size() != 0x20) {
continue;
}
for (const auto& title_id : user_id->GetSubdirectories()) {
if (!title_id->GetFiles().empty() || !title_id->GetSubdirectories().empty()) {
auto user_id_numeric = Common::HexStringToArray<0x10>(user_id->GetName());
std::reverse(user_id_numeric.begin(), user_id_numeric.end());
info.emplace_back(SaveDataInfo{
0,
space,
FileSys::SaveDataType::TemporaryStorage,
{},
user_id_numeric,
stoull_be(type->GetName()),
stoull_be(title_id->GetName()),
title_id->GetSize(),
{},
{},
});
}
}
}
}
} // namespace Service::FileSystem
|
