mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-06 12:11:43 +00:00
397 lines
18 KiB
C++
397 lines
18 KiB
C++
|
/*
|
||
|
|
* Copyright (c) 2018-2020 Atmosphère-NX
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify it
|
||
|
|
* under the terms and conditions of the GNU General Public License,
|
||
|
|
* version 2, as published by the Free Software Foundation.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
||
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||
|
|
* more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||
|
|
*/
|
||
|
|
#include <stratosphere.hpp>
|
||
|
|
|
||
|
|
namespace ams::fssystem {
|
||
|
|
|
||
|
|
namespace {
|
||
|
|
|
||
|
|
constexpr size_t CalculateRequiredWorkingMemorySize(const RomFileSystemInformation &header) {
|
||
|
|
return header.directory_bucket_size + header.directory_entry_size + header.file_bucket_size + header.file_entry_size;
|
||
|
|
}
|
||
|
|
|
||
|
|
class RomFsFile : public ams::fs::fsa::IFile, public ams::fs::impl::Newable {
|
||
|
|
private:
|
||
|
|
RomFsFileSystem *parent;
|
||
|
|
s64 start;
|
||
|
|
s64 end;
|
||
|
|
private:
|
||
|
|
s64 GetSize() const {
|
||
|
|
return this->end - this->start;
|
||
|
|
}
|
||
|
|
public:
|
||
|
|
RomFsFile(RomFsFileSystem *p, s64 s, s64 e) : parent(p), start(s), end(e) { /* ... */ }
|
||
|
|
virtual ~RomFsFile() { /* ... */ }
|
||
|
|
public:
|
||
|
|
virtual Result ReadImpl(size_t *out, s64 offset, void *buffer, size_t size, const fs::ReadOption &option) override {
|
||
|
|
R_TRY(buffers::DoContinuouslyUntilBufferIsAllocated([=]() -> Result {
|
||
|
|
size_t read_size = 0;
|
||
|
|
R_TRY(this->DryRead(std::addressof(read_size), offset, size, option, fs::OpenMode_Read));
|
||
|
|
|
||
|
|
R_TRY(this->parent->GetBaseStorage()->Read(offset + this->start, buffer, read_size));
|
||
|
|
*out = read_size;
|
||
|
|
|
||
|
|
return ResultSuccess();
|
||
|
|
}, AMS_CURRENT_FUNCTION_NAME));
|
||
|
|
|
||
|
|
return ResultSuccess();
|
||
|
|
}
|
||
|
|
|
||
|
|
virtual Result GetSizeImpl(s64 *out) override {
|
||
|
|
*out = this->GetSize();
|
||
|
|
return ResultSuccess();
|
||
|
|
}
|
||
|
|
|
||
|
|
virtual Result FlushImpl() override {
|
||
|
|
return ResultSuccess();
|
||
|
|
}
|
||
|
|
|
||
|
|
virtual Result WriteImpl(s64 offset, const void *buffer, size_t size, const fs::WriteOption &option) override {
|
||
|
|
bool needs_append;
|
||
|
|
R_TRY(this->DryWrite(std::addressof(needs_append), offset, size, option, fs::OpenMode_Read));
|
||
|
|
AMS_ASSERT(needs_append == false);
|
||
|
|
return fs::ResultUnsupportedOperationInRomFsFileA();
|
||
|
|
}
|
||
|
|
|
||
|
|
virtual Result SetSizeImpl(s64 size) override {
|
||
|
|
R_TRY(this->DrySetSize(size, fs::OpenMode_Read));
|
||
|
|
return fs::ResultUnsupportedOperationInRomFsFileA();
|
||
|
|
}
|
||
|
|
|
||
|
|
virtual Result OperateRangeImpl(void *dst, size_t dst_size, fs::OperationId op_id, s64 offset, s64 size, const void *src, size_t src_size) override {
|
||
|
|
switch (op_id) {
|
||
|
|
case fs::OperationId::InvalidateCache:
|
||
|
|
case fs::OperationId::QueryRange:
|
||
|
|
{
|
||
|
|
R_UNLESS(offset >= 0, fs::ResultOutOfRange());
|
||
|
|
R_UNLESS(this->GetSize() >= 0, fs::ResultOutOfRange());
|
||
|
|
|
||
|
|
auto operate_size = size;
|
||
|
|
if (offset + operate_size > this->GetSize() || offset + operate_size < offset) {
|
||
|
|
operate_size = this->GetSize() - offset;
|
||
|
|
}
|
||
|
|
|
||
|
|
R_TRY(buffers::DoContinuouslyUntilBufferIsAllocated([=]() -> Result {
|
||
|
|
R_TRY(this->parent->GetBaseStorage()->OperateRange(dst, dst_size, op_id, this->start + offset, operate_size, src, src_size));
|
||
|
|
return ResultSuccess();
|
||
|
|
}, AMS_CURRENT_FUNCTION_NAME));
|
||
|
|
return ResultSuccess();
|
||
|
|
}
|
||
|
|
default:
|
||
|
|
return fs::ResultUnsupportedOperationInRomFsFileB();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
public:
|
||
|
|
virtual sf::cmif::DomainObjectId GetDomainObjectId() const override {
|
||
|
|
AMS_ABORT();
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
class RomFsDirectory : public ams::fs::fsa::IDirectory, public ams::fs::impl::Newable {
|
||
|
|
private:
|
||
|
|
using FindPosition = RomFsFileSystem::RomFileTable::FindPosition;
|
||
|
|
private:
|
||
|
|
RomFsFileSystem *parent;
|
||
|
|
FindPosition current_find;
|
||
|
|
FindPosition first_find;
|
||
|
|
fs::OpenDirectoryMode mode;
|
||
|
|
public:
|
||
|
|
RomFsDirectory(RomFsFileSystem *p, const FindPosition &f, fs::OpenDirectoryMode m) : parent(p), current_find(f), first_find(f), mode(m) { /* ... */ }
|
||
|
|
virtual ~RomFsDirectory() override { /* ... */ }
|
||
|
|
public:
|
||
|
|
virtual Result ReadImpl(s64 *out_count, fs::DirectoryEntry *out_entries, s64 max_entries) {
|
||
|
|
R_TRY(buffers::DoContinuouslyUntilBufferIsAllocated([=]() -> Result {
|
||
|
|
return this->ReadImpl(out_count, std::addressof(this->current_find), out_entries, max_entries);
|
||
|
|
}, AMS_CURRENT_FUNCTION_NAME));
|
||
|
|
return ResultSuccess();
|
||
|
|
}
|
||
|
|
|
||
|
|
virtual Result GetEntryCountImpl(s64 *out) {
|
||
|
|
FindPosition find = this->first_find;
|
||
|
|
|
||
|
|
R_TRY(buffers::DoContinuouslyUntilBufferIsAllocated([&]() -> Result {
|
||
|
|
R_TRY(this->ReadImpl(out, std::addressof(find), nullptr, 0));
|
||
|
|
return ResultSuccess();
|
||
|
|
}, AMS_CURRENT_FUNCTION_NAME));
|
||
|
|
return ResultSuccess();
|
||
|
|
}
|
||
|
|
private:
|
||
|
|
Result ReadImpl(s64 *out_count, FindPosition *find, fs::DirectoryEntry *out_entries, s64 max_entries) {
|
||
|
|
constexpr size_t NameBufferSize = fs::EntryNameLengthMax + 1;
|
||
|
|
RomPathChar name[NameBufferSize];
|
||
|
|
s32 i = 0;
|
||
|
|
|
||
|
|
if (this->mode & fs::OpenDirectoryMode_Directory) {
|
||
|
|
while (i < max_entries || out_entries == nullptr) {
|
||
|
|
R_TRY_CATCH(this->parent->GetRomFileTable()->FindNextDirectory(name, find)) {
|
||
|
|
R_CATCH(fs::ResultDbmFindFinished) { break; }
|
||
|
|
} R_END_TRY_CATCH;
|
||
|
|
|
||
|
|
if (out_entries) {
|
||
|
|
R_UNLESS(strnlen(name, NameBufferSize) < NameBufferSize, fs::ResultTooLongPath());
|
||
|
|
strncpy(out_entries[i].name, name, fs::EntryNameLengthMax);
|
||
|
|
out_entries[i].name[fs::EntryNameLengthMax] = '\x00';
|
||
|
|
out_entries[i].type = fs::DirectoryEntryType_Directory;
|
||
|
|
out_entries[i].file_size = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
i++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (this->mode & fs::OpenDirectoryMode_File) {
|
||
|
|
while (i < max_entries || out_entries == nullptr) {
|
||
|
|
auto file_pos = find->next_file;
|
||
|
|
|
||
|
|
R_TRY_CATCH(this->parent->GetRomFileTable()->FindNextFile(name, find)) {
|
||
|
|
R_CATCH(fs::ResultDbmFindFinished) { break; }
|
||
|
|
} R_END_TRY_CATCH;
|
||
|
|
|
||
|
|
if (out_entries) {
|
||
|
|
R_UNLESS(strnlen(name, NameBufferSize) < NameBufferSize, fs::ResultTooLongPath());
|
||
|
|
strncpy(out_entries[i].name, name, fs::EntryNameLengthMax);
|
||
|
|
out_entries[i].name[fs::EntryNameLengthMax] = '\x00';
|
||
|
|
out_entries[i].type = fs::DirectoryEntryType_File;
|
||
|
|
|
||
|
|
RomFsFileSystem::RomFileTable::FileInfo file_info;
|
||
|
|
R_TRY(this->parent->GetRomFileTable()->OpenFile(std::addressof(file_info), this->parent->GetRomFileTable()->ConvertToFileId(file_pos)));
|
||
|
|
out_entries[i].file_size = file_info.size.Get();
|
||
|
|
}
|
||
|
|
|
||
|
|
i++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
*out_count = i;
|
||
|
|
return ResultSuccess();
|
||
|
|
}
|
||
|
|
public:
|
||
|
|
virtual sf::cmif::DomainObjectId GetDomainObjectId() const override {
|
||
|
|
AMS_ABORT();
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
RomFsFileSystem::RomFsFileSystem() : base_storage() {
|
||
|
|
/* ... */
|
||
|
|
}
|
||
|
|
|
||
|
|
RomFsFileSystem::~RomFsFileSystem() {
|
||
|
|
/* ... */
|
||
|
|
}
|
||
|
|
|
||
|
|
fs::IStorage *RomFsFileSystem::GetBaseStorage() {
|
||
|
|
return this->base_storage;
|
||
|
|
}
|
||
|
|
|
||
|
|
RomFsFileSystem::RomFileTable *RomFsFileSystem::GetRomFileTable() {
|
||
|
|
return std::addressof(this->rom_file_table);
|
||
|
|
}
|
||
|
|
|
||
|
|
Result RomFsFileSystem::GetRequiredWorkingMemorySize(size_t *out, fs::IStorage *storage) {
|
||
|
|
RomFileSystemInformation header;
|
||
|
|
|
||
|
|
R_TRY(buffers::DoContinuouslyUntilBufferIsAllocated([&]() -> Result {
|
||
|
|
R_TRY(storage->Read(0, std::addressof(header), sizeof(header)));
|
||
|
|
return ResultSuccess();
|
||
|
|
}, AMS_CURRENT_FUNCTION_NAME));
|
||
|
|
|
||
|
|
*out = CalculateRequiredWorkingMemorySize(header);
|
||
|
|
return ResultSuccess();
|
||
|
|
}
|
||
|
|
|
||
|
|
Result RomFsFileSystem::Initialize(fs::IStorage *base, void *work, size_t work_size, bool use_cache) {
|
||
|
|
AMS_ABORT_UNLESS(!use_cache || work != nullptr);
|
||
|
|
AMS_ABORT_UNLESS(base != nullptr);
|
||
|
|
|
||
|
|
/* Register blocking context for the scope. */
|
||
|
|
buffers::ScopedBufferManagerContextRegistration _sr;
|
||
|
|
buffers::EnableBlockingBufferManagerAllocation();
|
||
|
|
|
||
|
|
/* Read the header. */
|
||
|
|
RomFileSystemInformation header;
|
||
|
|
R_TRY(base->Read(0, std::addressof(header), sizeof(header)));
|
||
|
|
|
||
|
|
/* Set up our storages. */
|
||
|
|
if (use_cache) {
|
||
|
|
const size_t needed_size = CalculateRequiredWorkingMemorySize(header);
|
||
|
|
R_UNLESS(work_size >= needed_size, fs::ResultAllocationFailureInRomFsFileSystemA());
|
||
|
|
|
||
|
|
u8 *buf = static_cast<u8 *>(work);
|
||
|
|
auto dir_bucket_buf = buf; buf += header.directory_bucket_size;
|
||
|
|
auto dir_entry_buf = buf; buf += header.directory_entry_size;
|
||
|
|
auto file_bucket_buf = buf; buf += header.file_bucket_size;
|
||
|
|
auto file_entry_buf = buf; buf += header.file_entry_size;
|
||
|
|
|
||
|
|
R_TRY(base->Read(header.directory_bucket_offset, dir_bucket_buf, static_cast<size_t>(header.directory_bucket_size)));
|
||
|
|
R_TRY(base->Read(header.directory_entry_offset, dir_entry_buf, static_cast<size_t>(header.directory_entry_size)));
|
||
|
|
R_TRY(base->Read(header.file_bucket_offset, file_bucket_buf, static_cast<size_t>(header.file_bucket_size)));
|
||
|
|
R_TRY(base->Read(header.file_entry_offset, file_entry_buf, static_cast<size_t>(header.file_entry_size)));
|
||
|
|
|
||
|
|
this->dir_bucket_storage.reset(new fs::MemoryStorage(dir_bucket_buf, header.directory_bucket_size));
|
||
|
|
this->dir_entry_storage.reset(new fs::MemoryStorage(dir_entry_buf, header.directory_entry_size));
|
||
|
|
this->file_bucket_storage.reset(new fs::MemoryStorage(file_bucket_buf, header.file_bucket_size));
|
||
|
|
this->file_entry_storage.reset(new fs::MemoryStorage(file_entry_buf, header.file_entry_size));
|
||
|
|
} else {
|
||
|
|
this->dir_bucket_storage.reset(new fs::SubStorage(base, header.directory_bucket_offset, header.directory_bucket_size));
|
||
|
|
this->dir_entry_storage.reset(new fs::SubStorage(base, header.directory_entry_offset, header.directory_entry_size));
|
||
|
|
this->file_bucket_storage.reset(new fs::SubStorage(base, header.file_bucket_offset, header.file_bucket_size));
|
||
|
|
this->file_entry_storage.reset(new fs::SubStorage(base, header.file_entry_offset, header.file_entry_size));
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Ensure we allocated storages successfully. */
|
||
|
|
R_UNLESS(this->dir_bucket_storage != nullptr, fs::ResultAllocationFailureInRomFsFileSystemB());
|
||
|
|
R_UNLESS(this->dir_entry_storage != nullptr, fs::ResultAllocationFailureInRomFsFileSystemB());
|
||
|
|
R_UNLESS(this->file_bucket_storage != nullptr, fs::ResultAllocationFailureInRomFsFileSystemB());
|
||
|
|
R_UNLESS(this->file_entry_storage != nullptr, fs::ResultAllocationFailureInRomFsFileSystemB());
|
||
|
|
|
||
|
|
/* Initialize the rom table. */
|
||
|
|
R_TRY(this->rom_file_table.Initialize(this->dir_bucket_storage.get(), 0, static_cast<u32>(header.directory_bucket_size),
|
||
|
|
this->dir_entry_storage.get(), 0, static_cast<u32>(header.directory_entry_size),
|
||
|
|
this->file_bucket_storage.get(), 0, static_cast<u32>(header.file_bucket_size),
|
||
|
|
this->file_entry_storage.get(), 0, static_cast<u32>(header.file_entry_size)));
|
||
|
|
|
||
|
|
/* Set members. */
|
||
|
|
this->entry_size = header.body_offset;
|
||
|
|
this->base_storage = base;
|
||
|
|
return ResultSuccess();
|
||
|
|
}
|
||
|
|
|
||
|
|
Result RomFsFileSystem::Initialize(std::shared_ptr<fs::IStorage> base, void *work, size_t work_size, bool use_cache) {
|
||
|
|
this->shared_storage = std::move(base);
|
||
|
|
return this->Initialize(this->shared_storage.get(), work, work_size, use_cache);
|
||
|
|
}
|
||
|
|
|
||
|
|
Result RomFsFileSystem::GetFileInfo(RomFileTable::FileInfo *out, const char *path) {
|
||
|
|
R_TRY(buffers::DoContinuouslyUntilBufferIsAllocated([=]() -> Result {
|
||
|
|
R_TRY_CATCH(this->rom_file_table.OpenFile(out, path)) {
|
||
|
|
R_CONVERT(fs::ResultDbmNotFound, fs::ResultPathNotFound());
|
||
|
|
} R_END_TRY_CATCH;
|
||
|
|
|
||
|
|
return ResultSuccess();
|
||
|
|
}, AMS_CURRENT_FUNCTION_NAME));
|
||
|
|
|
||
|
|
return ResultSuccess();
|
||
|
|
}
|
||
|
|
|
||
|
|
Result RomFsFileSystem::GetFileBaseOffset(s64 *out, const char *path) {
|
||
|
|
RomFileTable::FileInfo info;
|
||
|
|
R_TRY(this->GetFileInfo(std::addressof(info), path));
|
||
|
|
*out = this->entry_size + info.offset.Get();
|
||
|
|
return ResultSuccess();
|
||
|
|
}
|
||
|
|
|
||
|
|
Result RomFsFileSystem::CreateFileImpl(const char *path, s64 size, int flags) {
|
||
|
|
return fs::ResultUnsupportedOperationInRomFsFileSystemA();
|
||
|
|
}
|
||
|
|
|
||
|
|
Result RomFsFileSystem::DeleteFileImpl(const char *path) {
|
||
|
|
return fs::ResultUnsupportedOperationInRomFsFileSystemA();
|
||
|
|
}
|
||
|
|
|
||
|
|
Result RomFsFileSystem::CreateDirectoryImpl(const char *path) {
|
||
|
|
return fs::ResultUnsupportedOperationInRomFsFileSystemA();
|
||
|
|
}
|
||
|
|
|
||
|
|
Result RomFsFileSystem::DeleteDirectoryImpl(const char *path) {
|
||
|
|
return fs::ResultUnsupportedOperationInRomFsFileSystemA();
|
||
|
|
}
|
||
|
|
|
||
|
|
Result RomFsFileSystem::DeleteDirectoryRecursivelyImpl(const char *path) {
|
||
|
|
return fs::ResultUnsupportedOperationInRomFsFileSystemA();
|
||
|
|
}
|
||
|
|
|
||
|
|
Result RomFsFileSystem::RenameFileImpl(const char *old_path, const char *new_path) {
|
||
|
|
return fs::ResultUnsupportedOperationInRomFsFileSystemA();
|
||
|
|
}
|
||
|
|
|
||
|
|
Result RomFsFileSystem::RenameDirectoryImpl(const char *old_path, const char *new_path) {
|
||
|
|
return fs::ResultUnsupportedOperationInRomFsFileSystemA();
|
||
|
|
}
|
||
|
|
|
||
|
|
Result RomFsFileSystem::GetEntryTypeImpl(fs::DirectoryEntryType *out, const char *path) {
|
||
|
|
R_TRY(buffers::DoContinuouslyUntilBufferIsAllocated([=]() -> Result {
|
||
|
|
RomDirectoryInfo dir_info;
|
||
|
|
|
||
|
|
R_TRY_CATCH(this->rom_file_table.GetDirectoryInformation(std::addressof(dir_info), path)) {
|
||
|
|
R_CONVERT(fs::ResultDbmNotFound, fs::ResultPathNotFound())
|
||
|
|
R_CATCH(fs::ResultDbmInvalidOperation) {
|
||
|
|
RomFileTable::FileInfo file_info;
|
||
|
|
R_TRY(this->GetFileInfo(std::addressof(file_info), path));
|
||
|
|
|
||
|
|
*out = fs::DirectoryEntryType_File;
|
||
|
|
return ResultSuccess();
|
||
|
|
}
|
||
|
|
} R_END_TRY_CATCH;
|
||
|
|
|
||
|
|
*out = fs::DirectoryEntryType_Directory;
|
||
|
|
return ResultSuccess();
|
||
|
|
}, AMS_CURRENT_FUNCTION_NAME));
|
||
|
|
|
||
|
|
return ResultSuccess();
|
||
|
|
}
|
||
|
|
|
||
|
|
Result RomFsFileSystem::OpenFileImpl(std::unique_ptr<fs::fsa::IFile> *out_file, const char *path, fs::OpenMode mode) {
|
||
|
|
R_UNLESS(mode == fs::OpenMode_Read, fs::ResultInvalidOpenMode());
|
||
|
|
|
||
|
|
RomFileTable::FileInfo file_info;
|
||
|
|
R_TRY(this->GetFileInfo(std::addressof(file_info), path));
|
||
|
|
|
||
|
|
auto file = std::make_unique<RomFsFile>(this, this->entry_size + file_info.offset.Get(), this->entry_size + file_info.offset.Get() + file_info.size.Get());
|
||
|
|
R_UNLESS(file != nullptr, fs::ResultAllocationFailureInRomFsFileSystemC());
|
||
|
|
|
||
|
|
*out_file = std::move(file);
|
||
|
|
return ResultSuccess();
|
||
|
|
}
|
||
|
|
|
||
|
|
Result RomFsFileSystem::OpenDirectoryImpl(std::unique_ptr<fs::fsa::IDirectory> *out_dir, const char *path, fs::OpenDirectoryMode mode) {
|
||
|
|
RomFileTable::FindPosition find;
|
||
|
|
R_TRY(buffers::DoContinuouslyUntilBufferIsAllocated([&]() -> Result {
|
||
|
|
R_TRY_CATCH(this->rom_file_table.FindOpen(std::addressof(find), path)) {
|
||
|
|
R_CONVERT(fs::ResultDbmNotFound, fs::ResultPathNotFound())
|
||
|
|
} R_END_TRY_CATCH;
|
||
|
|
|
||
|
|
return ResultSuccess();
|
||
|
|
}, AMS_CURRENT_FUNCTION_NAME));
|
||
|
|
|
||
|
|
auto dir = std::make_unique<RomFsDirectory>(this, find, mode);
|
||
|
|
R_UNLESS(dir != nullptr, fs::ResultAllocationFailureInRomFsFileSystemD());
|
||
|
|
|
||
|
|
*out_dir = std::move(dir);
|
||
|
|
return ResultSuccess();
|
||
|
|
}
|
||
|
|
|
||
|
|
Result RomFsFileSystem::CommitImpl() {
|
||
|
|
return ResultSuccess();
|
||
|
|
}
|
||
|
|
|
||
|
|
Result RomFsFileSystem::GetFreeSpaceSizeImpl(s64 *out, const char *path) {
|
||
|
|
*out = 0;
|
||
|
|
return ResultSuccess();
|
||
|
|
}
|
||
|
|
|
||
|
|
Result RomFsFileSystem::CleanDirectoryRecursivelyImpl(const char *path) {
|
||
|
|
return fs::ResultUnsupportedOperationInRomFsFileSystemA();
|
||
|
|
}
|
||
|
|
|
||
|
|
Result RomFsFileSystem::CommitProvisionallyImpl(s64 counter) {
|
||
|
|
return fs::ResultUnsupportedOperationInRomFsFileSystemB();
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|