summaryrefslogtreecommitdiffstats
path: root/src/core/hle/service/filesystem/filesystem.cpp
blob: aed2abb717665e680b45703d4e34ed413d0e0bde (plain) (blame)
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
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.

#include <utility>

#include "common/assert.h"
#include "common/file_util.h"
#include "core/core.h"
#include "core/file_sys/bis_factory.h"
#include "core/file_sys/errors.h"
#include "core/file_sys/mode.h"
#include "core/file_sys/registered_cache.h"
#include "core/file_sys/romfs_factory.h"
#include "core/file_sys/savedata_factory.h"
#include "core/file_sys/sdmc_factory.h"
#include "core/file_sys/vfs.h"
#include "core/file_sys/vfs_offset.h"
#include "core/hle/service/filesystem/filesystem.h"
#include "core/hle/service/filesystem/fsp_ldr.h"
#include "core/hle/service/filesystem/fsp_pr.h"
#include "core/hle/service/filesystem/fsp_srv.h"

namespace Service::FileSystem {

// Size of emulated sd card free space, reported in bytes.
// Just using 32GB because thats reasonable
// TODO(DarkLordZach): Eventually make this configurable in settings.
constexpr u64 EMULATED_SD_REPORTED_SIZE = 32000000000;

static FileSys::VirtualDir GetDirectoryRelativeWrapped(FileSys::VirtualDir base,
                                                       std::string_view dir_name_) {
    std::string dir_name(FileUtil::SanitizePath(dir_name_));
    if (dir_name.empty() || dir_name == "." || dir_name == "/" || dir_name == "\\")
        return base;

    return base->GetDirectoryRelative(dir_name);
}

VfsDirectoryServiceWrapper::VfsDirectoryServiceWrapper(FileSys::VirtualDir backing_)
    : backing(std::move(backing_)) {}

VfsDirectoryServiceWrapper::~VfsDirectoryServiceWrapper() = default;

std::string VfsDirectoryServiceWrapper::GetName() const {
    return backing->GetName();
}

ResultCode VfsDirectoryServiceWrapper::CreateFile(const std::string& path_, u64 size) const {
    std::string path(FileUtil::SanitizePath(path_));
    auto dir = GetDirectoryRelativeWrapped(backing, FileUtil::GetParentPath(path));
    auto file = dir->CreateFile(FileUtil::GetFilename(path));
    if (file == nullptr) {
        // TODO(DarkLordZach): Find a better error code for this
        return ResultCode(-1);
    }
    if (!file->Resize(size)) {
        // TODO(DarkLordZach): Find a better error code for this
        return ResultCode(-1);
    }
    return RESULT_SUCCESS;
}

ResultCode VfsDirectoryServiceWrapper::DeleteFile(const std::string& path_) const {
    std::string path(FileUtil::SanitizePath(path_));
    if (path.empty()) {
        // TODO(DarkLordZach): Why do games call this and what should it do? Works as is but...
        return RESULT_SUCCESS;
    }

    auto dir = GetDirectoryRelativeWrapped(backing, FileUtil::GetParentPath(path));
    if (dir->GetFile(FileUtil::GetFilename(path)) == nullptr) {
        return FileSys::ERROR_PATH_NOT_FOUND;
    }
    if (!dir->DeleteFile(FileUtil::GetFilename(path))) {
        // TODO(DarkLordZach): Find a better error code for this
        return ResultCode(-1);
    }

    return RESULT_SUCCESS;
}

ResultCode VfsDirectoryServiceWrapper::CreateDirectory(const std::string& path_) const {
    std::string path(FileUtil::SanitizePath(path_));
    auto dir = GetDirectoryRelativeWrapped(backing, FileUtil::GetParentPath(path));
    if (dir == nullptr && FileUtil::GetFilename(FileUtil::GetParentPath(path)).empty())
        dir = backing;
    auto new_dir = dir->CreateSubdirectory(FileUtil::GetFilename(path));
    if (new_dir == nullptr) {
        // TODO(DarkLordZach): Find a better error code for this
        return ResultCode(-1);
    }
    return RESULT_SUCCESS;
}

ResultCode VfsDirectoryServiceWrapper::DeleteDirectory(const std::string& path_) const {
    std::string path(FileUtil::SanitizePath(path_));
    auto dir = GetDirectoryRelativeWrapped(backing, FileUtil::GetParentPath(path));
    if (!dir->DeleteSubdirectory(FileUtil::GetFilename(path))) {
        // TODO(DarkLordZach): Find a better error code for this
        return ResultCode(-1);
    }
    return RESULT_SUCCESS;
}

ResultCode VfsDirectoryServiceWrapper::DeleteDirectoryRecursively(const std::string& path_) const {
    std::string path(FileUtil::SanitizePath(path_));
    auto dir = GetDirectoryRelativeWrapped(backing, FileUtil::GetParentPath(path));
    if (!dir->DeleteSubdirectoryRecursive(FileUtil::GetFilename(path))) {
        // TODO(DarkLordZach): Find a better error code for this
        return ResultCode(-1);
    }
    return RESULT_SUCCESS;
}

ResultCode VfsDirectoryServiceWrapper::RenameFile(const std::string& src_path_,
                                                  const std::string& dest_path_) const {
    std::string src_path(FileUtil::SanitizePath(src_path_));
    std::string dest_path(FileUtil::SanitizePath(dest_path_));
    auto src = backing->GetFileRelative(src_path);
    if (FileUtil::GetParentPath(src_path) == FileUtil::GetParentPath(dest_path)) {
        // Use more-optimized vfs implementation rename.
        if (src == nullptr)
            return FileSys::ERROR_PATH_NOT_FOUND;
        if (!src->Rename(FileUtil::GetFilename(dest_path))) {
            // TODO(DarkLordZach): Find a better error code for this
            return ResultCode(-1);
        }
        return RESULT_SUCCESS;
    }

    // Move by hand -- TODO(DarkLordZach): Optimize
    auto c_res = CreateFile(dest_path, src->GetSize());
    if (c_res != RESULT_SUCCESS)
        return c_res;

    auto dest = backing->GetFileRelative(dest_path);
    ASSERT_MSG(dest != nullptr, "Newly created file with success cannot be found.");

    ASSERT_MSG(dest->WriteBytes(src->ReadAllBytes()) == src->GetSize(),
               "Could not write all of the bytes but everything else has succeded.");

    if (!src->GetContainingDirectory()->DeleteFile(FileUtil::GetFilename(src_path))) {
        // TODO(DarkLordZach): Find a better error code for this
        return ResultCode(-1);
    }

    return RESULT_SUCCESS;
}

ResultCode VfsDirectoryServiceWrapper::RenameDirectory(const std::string& src_path_,
                                                       const std::string& dest_path_) const {
    std::string src_path(FileUtil::SanitizePath(src_path_));
    std::string dest_path(FileUtil::SanitizePath(dest_path_));
    auto src = GetDirectoryRelativeWrapped(backing, src_path);
    if (FileUtil::GetParentPath(src_path) == FileUtil::GetParentPath(dest_path)) {
        // Use more-optimized vfs implementation rename.
        if (src == nullptr)
            return FileSys::ERROR_PATH_NOT_FOUND;
        if (!src->Rename(FileUtil::GetFilename(dest_path))) {
            // TODO(DarkLordZach): Find a better error code for this
            return ResultCode(-1);
        }
        return RESULT_SUCCESS;
    }

    // TODO(DarkLordZach): Implement renaming across the tree (move).
    ASSERT_MSG(false,
               "Could not rename directory with path \"{}\" to new path \"{}\" because parent dirs "
               "don't match -- UNIMPLEMENTED",
               src_path, dest_path);

    // TODO(DarkLordZach): Find a better error code for this
    return ResultCode(-1);
}

ResultVal<FileSys::VirtualFile> VfsDirectoryServiceWrapper::OpenFile(const std::string& path_,
                                                                     FileSys::Mode mode) const {
    std::string path(FileUtil::SanitizePath(path_));
    auto npath = path;
    while (npath.size() > 0 && (npath[0] == '/' || npath[0] == '\\'))
        npath = npath.substr(1);
    auto file = backing->GetFileRelative(npath);
    if (file == nullptr)
        return FileSys::ERROR_PATH_NOT_FOUND;

    if (mode == FileSys::Mode::Append) {
        return MakeResult<FileSys::VirtualFile>(
            std::make_shared<FileSys::OffsetVfsFile>(file, 0, file->GetSize()));
    }

    return MakeResult<FileSys::VirtualFile>(file);
}

ResultVal<FileSys::VirtualDir> VfsDirectoryServiceWrapper::OpenDirectory(const std::string& path_) {
    std::string path(FileUtil::SanitizePath(path_));
    auto dir = GetDirectoryRelativeWrapped(backing, path);
    if (dir == nullptr) {
        // TODO(DarkLordZach): Find a better error code for this
        return FileSys::ERROR_PATH_NOT_FOUND;
    }
    return MakeResult(dir);
}

u64 VfsDirectoryServiceWrapper::GetFreeSpaceSize() const {
    if (backing->IsWritable())
        return EMULATED_SD_REPORTED_SIZE;

    return 0;
}

ResultVal<FileSys::EntryType> VfsDirectoryServiceWrapper::GetEntryType(
    const std::string& path_) const {
    std::string path(FileUtil::SanitizePath(path_));
    auto dir = GetDirectoryRelativeWrapped(backing, FileUtil::GetParentPath(path));
    if (dir == nullptr)
        return FileSys::ERROR_PATH_NOT_FOUND;
    auto filename = FileUtil::GetFilename(path);
    // TODO(Subv): Some games use the '/' path, find out what this means.
    if (filename.empty())
        return MakeResult(FileSys::EntryType::Directory);

    if (dir->GetFile(filename) != nullptr)
        return MakeResult(FileSys::EntryType::File);
    if (dir->GetSubdirectory(filename) != nullptr)
        return MakeResult(FileSys::EntryType::Directory);
    return FileSys::ERROR_PATH_NOT_FOUND;
}

/**
 * Map of registered file systems, identified by type. Once an file system is registered here, it
 * is never removed until UnregisterFileSystems is called.
 */
static std::unique_ptr<FileSys::RomFSFactory> romfs_factory;
static std::unique_ptr<FileSys::SaveDataFactory> save_data_factory;
static std::unique_ptr<FileSys::SDMCFactory> sdmc_factory;
static std::unique_ptr<FileSys::BISFactory> bis_factory;

ResultCode RegisterRomFS(std::unique_ptr<FileSys::RomFSFactory>&& factory) {
    ASSERT_MSG(romfs_factory == nullptr, "Tried to register a second RomFS");
    romfs_factory = std::move(factory);
    LOG_DEBUG(Service_FS, "Registered RomFS");
    return RESULT_SUCCESS;
}

ResultCode RegisterSaveData(std::unique_ptr<FileSys::SaveDataFactory>&& factory) {
    ASSERT_MSG(romfs_factory == nullptr, "Tried to register a second save data");
    save_data_factory = std::move(factory);
    LOG_DEBUG(Service_FS, "Registered save data");
    return RESULT_SUCCESS;
}

ResultCode RegisterSDMC(std::unique_ptr<FileSys::SDMCFactory>&& factory) {
    ASSERT_MSG(sdmc_factory == nullptr, "Tried to register a second SDMC");
    sdmc_factory = std::move(factory);
    LOG_DEBUG(Service_FS, "Registered SDMC");
    return RESULT_SUCCESS;
}

ResultCode RegisterBIS(std::unique_ptr<FileSys::BISFactory>&& factory) {
    ASSERT_MSG(bis_factory == nullptr, "Tried to register a second BIS");
    bis_factory = std::move(factory);
    LOG_DEBUG(Service_FS, "Registered BIS");
    return RESULT_SUCCESS;
}

ResultVal<FileSys::VirtualFile> OpenRomFSCurrentProcess() {
    LOG_TRACE(Service_FS, "Opening RomFS for current process");

    if (romfs_factory == nullptr) {
        // TODO(bunnei): Find a better error code for this
        return ResultCode(-1);
    }

    return romfs_factory->OpenCurrentProcess();
}

ResultVal<FileSys::VirtualFile> OpenRomFS(u64 title_id, FileSys::StorageId storage_id,
                                          FileSys::ContentRecordType type) {
    LOG_TRACE(Service_FS, "Opening RomFS for title_id={:016X}, storage_id={:02X}, type={:02X}",
              title_id, static_cast<u8>(storage_id), static_cast<u8>(type));

    if (romfs_factory == nullptr) {
        // TODO(bunnei): Find a better error code for this
        return ResultCode(-1);
    }

    return romfs_factory->Open(title_id, storage_id, type);
}

ResultVal<FileSys::VirtualDir> OpenSaveData(FileSys::SaveDataSpaceId space,
                                            FileSys::SaveDataDescriptor save_struct) {
    LOG_TRACE(Service_FS, "Opening Save Data for space_id={:01X}, save_struct={}",
              static_cast<u8>(space), save_struct.DebugInfo());

    if (save_data_factory == nullptr) {
        return ResultCode(ErrorModule::FS, FileSys::ErrCodes::TitleNotFound);
    }

    return save_data_factory->Open(space, save_struct);
}

ResultVal<FileSys::VirtualDir> OpenSDMC() {
    LOG_TRACE(Service_FS, "Opening SDMC");

    if (sdmc_factory == nullptr) {
        return ResultCode(ErrorModule::FS, FileSys::ErrCodes::SdCardNotFound);
    }

    return sdmc_factory->Open();
}

std::shared_ptr<FileSys::RegisteredCacheUnion> GetUnionContents() {
    return std::make_shared<FileSys::RegisteredCacheUnion>(
        std::vector<std::shared_ptr<FileSys::RegisteredCache>>{
            GetSystemNANDContents(), GetUserNANDContents(), GetSDMCContents()});
}

std::shared_ptr<FileSys::RegisteredCache> GetSystemNANDContents() {
    LOG_TRACE(Service_FS, "Opening System NAND Contents");

    if (bis_factory == nullptr)
        return nullptr;

    return bis_factory->GetSystemNANDContents();
}

std::shared_ptr<FileSys::RegisteredCache> GetUserNANDContents() {
    LOG_TRACE(Service_FS, "Opening User NAND Contents");

    if (bis_factory == nullptr)
        return nullptr;

    return bis_factory->GetUserNANDContents();
}

std::shared_ptr<FileSys::RegisteredCache> GetSDMCContents() {
    LOG_TRACE(Service_FS, "Opening SDMC Contents");

    if (sdmc_factory == nullptr)
        return nullptr;

    return sdmc_factory->GetSDMCContents();
}

FileSys::VirtualDir GetModificationLoadRoot(u64 title_id) {
    LOG_TRACE(Service_FS, "Opening mod load root for tid={:016X}", title_id);

    if (bis_factory == nullptr)
        return nullptr;

    return bis_factory->GetModificationLoadRoot(title_id);
}

void CreateFactories(const FileSys::VirtualFilesystem& vfs, bool overwrite) {
    if (overwrite) {
        bis_factory = nullptr;
        save_data_factory = nullptr;
        sdmc_factory = nullptr;
    }

    auto nand_directory = vfs->OpenDirectory(FileUtil::GetUserPath(FileUtil::UserPath::NANDDir),
                                             FileSys::Mode::ReadWrite);
    auto sd_directory = vfs->OpenDirectory(FileUtil::GetUserPath(FileUtil::UserPath::SDMCDir),
                                           FileSys::Mode::ReadWrite);
    auto load_directory = vfs->OpenDirectory(FileUtil::GetUserPath(FileUtil::UserPath::LoadDir),
                                             FileSys::Mode::ReadWrite);

    if (bis_factory == nullptr)
        bis_factory = std::make_unique<FileSys::BISFactory>(nand_directory, load_directory);
    if (save_data_factory == nullptr)
        save_data_factory = std::make_unique<FileSys::SaveDataFactory>(std::move(nand_directory));
    if (sdmc_factory == nullptr)
        sdmc_factory = std::make_unique<FileSys::SDMCFactory>(std::move(sd_directory));
}

void InstallInterfaces(SM::ServiceManager& service_manager, const FileSys::VirtualFilesystem& vfs) {
    romfs_factory = nullptr;
    CreateFactories(vfs, false);
    std::make_shared<FSP_LDR>()->InstallAsService(service_manager);
    std::make_shared<FSP_PR>()->InstallAsService(service_manager);
    std::make_shared<FSP_SRV>()->InstallAsService(service_manager);
}

} // namespace Service::FileSystem