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fs: Add FileSystemAccessor classes

This commit is contained in:
FearlessTobi 2024-02-10 18:15:58 +01:00
parent c9ef2e26ca
commit d5e4617ab5
14 changed files with 554 additions and 130 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/core/CMakeLists.txt
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@ -59,8 +59,12 @@ add_library(core STATIC
file_sys/fs_path.h
file_sys/fs_path_utility.h
file_sys/fs_string_util.h
file_sys/fsa/fs_i_directory.h
file_sys/fsa/fs_i_file.h
file_sys/fsa/fs_i_filesystem.h
file_sys/fsmitm_romfsbuild.cpp
file_sys/fsmitm_romfsbuild.h
file_sys/fssrv/fssrv_sf_path.h
file_sys/fssystem/fs_i_storage.h
file_sys/fssystem/fs_types.h
file_sys/fssystem/fssystem_aes_ctr_counter_extended_storage.cpp

2
src/core/file_sys/fs_filesystem.h
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@ -23,6 +23,8 @@ enum class OpenDirectoryMode : u64 {
File = (1 << 1),
All = (Directory | File),
NotRequireFileSize = (1 << 31),
};
DECLARE_ENUM_FLAG_OPERATORS(OpenDirectoryMode)

8
src/core/file_sys/fs_memory_management.h
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@ -10,7 +10,7 @@ namespace FileSys {
constexpr size_t RequiredAlignment = alignof(u64);
void* AllocateUnsafe(size_t size) {
inline void* AllocateUnsafe(size_t size) {
// Allocate
void* const ptr = ::operator new(size, std::align_val_t{RequiredAlignment});
@ -21,16 +21,16 @@ void* AllocateUnsafe(size_t size) {
return ptr;
}
void DeallocateUnsafe(void* ptr, size_t size) {
inline void DeallocateUnsafe(void* ptr, size_t size) {
// Deallocate the pointer
::operator delete(ptr, std::align_val_t{RequiredAlignment});
}
void* Allocate(size_t size) {
inline void* Allocate(size_t size) {
return AllocateUnsafe(size);
}
void Deallocate(void* ptr, size_t size) {
inline void Deallocate(void* ptr, size_t size) {
// If the pointer is non-null, deallocate it
if (ptr != nullptr) {
DeallocateUnsafe(ptr, size);

2
src/core/file_sys/fs_path.h
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@ -381,7 +381,7 @@ public:
// Check that it's possible for us to remove a child
auto* p = m_write_buffer.Get();
s32 len = std::strlen(p);
s32 len = static_cast<s32>(std::strlen(p));
R_UNLESS(len != 1 || (p[0] != '/' && p[0] != '.'), ResultNotImplemented);
// Handle a trailing separator

15
src/core/file_sys/fs_string_util.h
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@ -19,6 +19,11 @@ constexpr int Strlen(const T* str) {
return length;
}
template <typename T>
constexpr int Strnlen(const T* str, std::size_t count) {
return Strnlen(str, static_cast<int>(count));
}
template <typename T>
constexpr int Strnlen(const T* str, int count) {
ASSERT(str != nullptr);
@ -32,6 +37,11 @@ constexpr int Strnlen(const T* str, int count) {
return length;
}
template <typename T>
constexpr int Strncmp(const T* lhs, const T* rhs, std::size_t count) {
return Strncmp(lhs, rhs, static_cast<int>(count));
}
template <typename T>
constexpr int Strncmp(const T* lhs, const T* rhs, int count) {
ASSERT(lhs != nullptr);
@ -51,6 +61,11 @@ constexpr int Strncmp(const T* lhs, const T* rhs, int count) {
return l - r;
}
template <typename T>
static constexpr int Strlcpy(T* dst, const T* src, std::size_t count) {
return Strlcpy<T>(dst, src, static_cast<int>(count));
}
template <typename T>
static constexpr int Strlcpy(T* dst, const T* src, int count) {
ASSERT(dst != nullptr);

89
src/core/file_sys/fsa/fs_i_directory.h Normal file
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@ -0,0 +1,89 @@
// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include "common/common_types.h"
#include "core/file_sys/errors.h"
#include "core/file_sys/fs_directory.h"
#include "core/file_sys/fs_file.h"
#include "core/file_sys/fs_filesystem.h"
#include "core/file_sys/savedata_factory.h"
#include "core/file_sys/vfs/vfs.h"
#include "core/hle/result.h"
namespace FileSys::Fsa {
class IDirectory {
public:
IDirectory(VirtualDir backend_, OpenDirectoryMode mode) : backend(std::move(backend_)) {
// TODO(DarkLordZach): Verify that this is the correct behavior.
// Build entry index now to save time later.
if (True(mode & OpenDirectoryMode::Directory)) {
BuildEntryIndex(entries, backend->GetSubdirectories(), DirectoryEntryType::Directory);
}
if (True(mode & OpenDirectoryMode::File)) {
BuildEntryIndex(entries, backend->GetFiles(), DirectoryEntryType::File);
}
}
virtual ~IDirectory() {}
Result Read(s64* out_count, DirectoryEntry* out_entries, s64 max_entries) {
R_UNLESS(out_count != nullptr, ResultNullptrArgument);
if (max_entries == 0) {
*out_count = 0;
R_SUCCEED();
}
R_UNLESS(out_entries != nullptr, ResultNullptrArgument);
R_UNLESS(max_entries > 0, ResultInvalidArgument);
R_RETURN(this->DoRead(out_count, out_entries, max_entries));
}
Result GetEntryCount(s64* out) {
R_UNLESS(out != nullptr, ResultNullptrArgument);
R_RETURN(this->DoGetEntryCount(out));
}
private:
virtual Result DoRead(s64* out_count, DirectoryEntry* out_entries, s64 max_entries) {
const u64 actual_entries =
std::min(static_cast<u64>(max_entries), entries.size() - next_entry_index);
auto* begin = reinterpret_cast<u8*>(entries.data() + next_entry_index);
next_entry_index += actual_entries;
*out_count = actual_entries;
out_entries = reinterpret_cast<DirectoryEntry*>(begin);
R_SUCCEED();
}
virtual Result DoGetEntryCount(s64* out) {
*out = entries.size() - next_entry_index;
R_SUCCEED();
}
// TODO: Remove this when VFS is gone
template <typename T>
void BuildEntryIndex(std::vector<DirectoryEntry>& entries, const std::vector<T>& new_data,
DirectoryEntryType type) {
entries.reserve(entries.size() + new_data.size());
for (const auto& new_entry : new_data) {
auto name = new_entry->GetName();
if (type == DirectoryEntryType::File && name == GetSaveDataSizeFileName()) {
continue;
}
entries.emplace_back(name, static_cast<s8>(type),
type == DirectoryEntryType::Directory ? 0 : new_entry->GetSize());
}
}
VirtualDir backend;
std::vector<DirectoryEntry> entries;
u64 next_entry_index = 0;
};
} // namespace FileSys::Fsa

167
src/core/file_sys/fsa/fs_i_file.h Normal file
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@ -0,0 +1,167 @@
// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include "common/overflow.h"
#include "core/file_sys/errors.h"
#include "core/file_sys/fs_file.h"
#include "core/file_sys/fs_filesystem.h"
#include "core/file_sys/fs_operate_range.h"
#include "core/file_sys/vfs/vfs.h"
#include "core/file_sys/vfs/vfs_types.h"
#include "core/hle/result.h"
namespace FileSys::Fsa {
class IFile {
public:
IFile(VirtualFile backend_) : backend(std::move(backend_)) {}
virtual ~IFile() {}
Result Read(size_t* out, s64 offset, void* buffer, size_t size, const ReadOption& option) {
// Check that we have an output pointer
R_UNLESS(out != nullptr, ResultNullptrArgument);
// If we have nothing to read, just succeed
if (size == 0) {
*out = 0;
R_SUCCEED();
}
// Check that the read is valid
R_UNLESS(buffer != nullptr, ResultNullptrArgument);
R_UNLESS(offset >= 0, ResultOutOfRange);
R_UNLESS(Common::CanAddWithoutOverflow<s64>(offset, size), ResultOutOfRange);
// Do the read
R_RETURN(this->DoRead(out, offset, buffer, size, option));
}
Result Read(size_t* out, s64 offset, void* buffer, size_t size) {
R_RETURN(this->Read(out, offset, buffer, size, ReadOption::None));
}
Result GetSize(s64* out) {
R_UNLESS(out != nullptr, ResultNullptrArgument);
R_RETURN(this->DoGetSize(out));
}
Result Flush() {
R_RETURN(this->DoFlush());
}
Result Write(s64 offset, const void* buffer, size_t size, const WriteOption& option) {
// Handle the zero-size case
if (size == 0) {
if (option.HasFlushFlag()) {
R_TRY(this->Flush());
}
R_SUCCEED();
}
// Check the write is valid
R_UNLESS(buffer != nullptr, ResultNullptrArgument);
R_UNLESS(offset >= 0, ResultOutOfRange);
R_UNLESS(Common::CanAddWithoutOverflow<s64>(offset, size), ResultOutOfRange);
R_RETURN(this->DoWrite(offset, buffer, size, option));
}
Result SetSize(s64 size) {
R_UNLESS(size >= 0, ResultOutOfRange);
R_RETURN(this->DoSetSize(size));
}
Result OperateRange(void* dst, size_t dst_size, OperationId op_id, s64 offset, s64 size,
const void* src, size_t src_size) {
R_RETURN(this->DoOperateRange(dst, dst_size, op_id, offset, size, src, src_size));
}
Result OperateRange(OperationId op_id, s64 offset, s64 size) {
R_RETURN(this->DoOperateRange(nullptr, 0, op_id, offset, size, nullptr, 0));
}
protected:
Result DryRead(size_t* out, s64 offset, size_t size, const ReadOption& option,
OpenMode open_mode) {
// Check that we can read
R_UNLESS(static_cast<u32>(open_mode & OpenMode::Read) != 0, ResultReadNotPermitted);
// Get the file size, and validate our offset
s64 file_size = 0;
R_TRY(this->DoGetSize(std::addressof(file_size)));
R_UNLESS(offset <= file_size, ResultOutOfRange);
*out = static_cast<size_t>(std::min(file_size - offset, static_cast<s64>(size)));
R_SUCCEED();
}
Result DrySetSize(s64 size, OpenMode open_mode) {
// Check that we can write
R_UNLESS(static_cast<u32>(open_mode & OpenMode::Write) != 0, ResultWriteNotPermitted);
R_SUCCEED();
}
Result DryWrite(bool* out_append, s64 offset, size_t size, const WriteOption& option,
OpenMode open_mode) {
// Check that we can write
R_UNLESS(static_cast<u32>(open_mode & OpenMode::Write) != 0, ResultWriteNotPermitted);
// Get the file size
s64 file_size = 0;
R_TRY(this->DoGetSize(&file_size));
// Determine if we need to append
*out_append = false;
if (file_size < offset + static_cast<s64>(size)) {
R_UNLESS(static_cast<u32>(open_mode & OpenMode::AllowAppend) != 0,
ResultFileExtensionWithoutOpenModeAllowAppend);
*out_append = true;
}
R_SUCCEED();
}
private:
Result DoRead(size_t* out, s64 offset, void* buffer, size_t size, const ReadOption& option) {
std::vector<u8> output = backend->ReadBytes(size, offset);
*out = output.size();
buffer = output.data();
R_SUCCEED();
}
Result DoGetSize(s64* out) {
*out = backend->GetSize();
R_SUCCEED();
}
Result DoFlush() {
// Exists for SDK compatibiltity -- No need to flush file.
R_SUCCEED();
}
Result DoWrite(s64 offset, const void* buffer, size_t size, const WriteOption& option) {
const std::size_t written = backend->Write(static_cast<const u8*>(buffer), size, offset);
ASSERT_MSG(written == size,
"Could not write all bytes to file (requested={:016X}, actual={:016X}).", size,
written);
R_SUCCEED();
}
Result DoSetSize(s64 size) {
backend->Resize(size);
R_SUCCEED();
}
Result DoOperateRange(void* dst, size_t dst_size, OperationId op_id, s64 offset, s64 size,
const void* src, size_t src_size) {
R_THROW(ResultNotImplemented);
}
VirtualFile backend;
};
} // namespace FileSys::Fsa

207
src/core/file_sys/fsa/fs_i_filesystem.h Normal file
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@ -0,0 +1,207 @@
// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include "core/file_sys/errors.h"
#include "core/file_sys/fs_filesystem.h"
#include "core/file_sys/fs_path.h"
#include "core/file_sys/vfs/vfs_types.h"
#include "core/hle/result.h"
#include "core/hle/service/filesystem/filesystem.h"
namespace FileSys::Fsa {
class IFile;
class IDirectory;
enum class QueryId {
SetConcatenationFileAttribute = 0,
UpdateMac = 1,
IsSignedSystemPartitionOnSdCardValid = 2,
QueryUnpreparedFileInformation = 3,
};
class IFileSystem {
public:
IFileSystem(VirtualDir backend_) : backend{std::move(backend_)} {}
virtual ~IFileSystem() {}
Result CreateFile(const Path& path, s64 size, CreateOption option) {
R_UNLESS(size >= 0, ResultOutOfRange);
R_RETURN(this->DoCreateFile(path, size, static_cast<int>(option)));
}
Result CreateFile(const Path& path, s64 size) {
R_RETURN(this->CreateFile(path, size, CreateOption::None));
}
Result DeleteFile(const Path& path) {
R_RETURN(this->DoDeleteFile(path));
}
Result CreateDirectory(const Path& path) {
R_RETURN(this->DoCreateDirectory(path));
}
Result DeleteDirectory(const Path& path) {
R_RETURN(this->DoDeleteDirectory(path));
}
Result DeleteDirectoryRecursively(const Path& path) {
R_RETURN(this->DoDeleteDirectoryRecursively(path));
}
Result RenameFile(const Path& old_path, const Path& new_path) {
R_RETURN(this->DoRenameFile(old_path, new_path));
}
Result RenameDirectory(const Path& old_path, const Path& new_path) {
R_RETURN(this->DoRenameDirectory(old_path, new_path));
}
Result GetEntryType(DirectoryEntryType* out, const Path& path) {
R_RETURN(this->DoGetEntryType(out, path));
}
Result OpenFile(VirtualFile* out_file, const Path& path, OpenMode mode) {
R_UNLESS(out_file != nullptr, ResultNullptrArgument);
R_UNLESS(static_cast<u32>(mode & OpenMode::ReadWrite) != 0, ResultInvalidOpenMode);
R_UNLESS(static_cast<u32>(mode & ~OpenMode::All) == 0, ResultInvalidOpenMode);
R_RETURN(this->DoOpenFile(out_file, path, mode));
}
Result OpenDirectory(VirtualDir* out_dir, const Path& path, OpenDirectoryMode mode) {
R_UNLESS(out_dir != nullptr, ResultNullptrArgument);
R_UNLESS(static_cast<u64>(mode & OpenDirectoryMode::All) != 0, ResultInvalidOpenMode);
R_UNLESS(static_cast<u64>(
mode & ~(OpenDirectoryMode::All | OpenDirectoryMode::NotRequireFileSize)) == 0,
ResultInvalidOpenMode);
R_RETURN(this->DoOpenDirectory(out_dir, path, mode));
}
Result Commit() {
R_RETURN(this->DoCommit());
}
Result GetFreeSpaceSize(s64* out, const Path& path) {
R_UNLESS(out != nullptr, ResultNullptrArgument);
R_RETURN(this->DoGetFreeSpaceSize(out, path));
}
Result GetTotalSpaceSize(s64* out, const Path& path) {
R_UNLESS(out != nullptr, ResultNullptrArgument);
R_RETURN(this->DoGetTotalSpaceSize(out, path));
}
Result CleanDirectoryRecursively(const Path& path) {
R_RETURN(this->DoCleanDirectoryRecursively(path));
}
Result GetFileTimeStampRaw(FileTimeStampRaw* out, const Path& path) {
R_UNLESS(out != nullptr, ResultNullptrArgument);
R_RETURN(this->DoGetFileTimeStampRaw(out, path));
}
Result QueryEntry(char* dst, size_t dst_size, const char* src, size_t src_size, QueryId query,
const Path& path) {
R_RETURN(this->DoQueryEntry(dst, dst_size, src, src_size, query, path));
}
// These aren't accessible as commands
Result CommitProvisionally(s64 counter) {
R_RETURN(this->DoCommitProvisionally(counter));
}
Result Rollback() {
R_RETURN(this->DoRollback());
}
Result Flush() {
R_RETURN(this->DoFlush());
}
private:
Result DoCreateFile(const Path& path, s64 size, int flags) {
R_RETURN(backend.CreateFile(path.GetString(), size));
}
Result DoDeleteFile(const Path& path) {
R_RETURN(backend.DeleteFile(path.GetString()));
}
Result DoCreateDirectory(const Path& path) {
R_RETURN(backend.CreateDirectory(path.GetString()));
}
Result DoDeleteDirectory(const Path& path) {
R_RETURN(backend.DeleteDirectory(path.GetString()));
}
Result DoDeleteDirectoryRecursively(const Path& path) {
R_RETURN(backend.DeleteDirectoryRecursively(path.GetString()));
}
Result DoRenameFile(const Path& old_path, const Path& new_path) {
R_RETURN(backend.RenameFile(old_path.GetString(), new_path.GetString()));
}
Result DoRenameDirectory(const Path& old_path, const Path& new_path) {
R_RETURN(backend.RenameDirectory(old_path.GetString(), new_path.GetString()));
}
Result DoGetEntryType(DirectoryEntryType* out, const Path& path) {
R_RETURN(backend.GetEntryType(out, path.GetString()));
}
Result DoOpenFile(VirtualFile* out_file, const Path& path, OpenMode mode) {
R_RETURN(backend.OpenFile(out_file, path.GetString(), mode));
}
Result DoOpenDirectory(VirtualDir* out_directory, const Path& path,
OpenDirectoryMode mode) {
R_RETURN(backend.OpenDirectory(out_directory, path.GetString()));
}
Result DoCommit() {
R_THROW(ResultNotImplemented);
}
Result DoGetFreeSpaceSize(s64* out, const Path& path) {
R_THROW(ResultNotImplemented);
}
Result DoGetTotalSpaceSize(s64* out, const Path& path) {
R_THROW(ResultNotImplemented);
}
Result DoCleanDirectoryRecursively(const Path& path) {
R_RETURN(backend.CleanDirectoryRecursively(path.GetString()));
}
Result DoGetFileTimeStampRaw(FileTimeStampRaw* out, const Path& path) {
R_RETURN(backend.GetFileTimeStampRaw(out, path.GetString()));
}
Result DoQueryEntry(char* dst, size_t dst_size, const char* src, size_t src_size, QueryId query,
const Path& path) {
R_THROW(ResultNotImplemented);
}
// These aren't accessible as commands
Result DoCommitProvisionally(s64 counter) {
R_THROW(ResultNotImplemented);
}
Result DoRollback() {
R_THROW(ResultNotImplemented);
}
Result DoFlush() {
R_THROW(ResultNotImplemented);
}
Service::FileSystem::VfsDirectoryServiceWrapper backend;
};
} // namespace FileSys::Fsa

58
src/core/hle/service/filesystem/fsp/fs_i_directory.cpp
View File

@ -8,43 +8,15 @@
namespace Service::FileSystem {
template <typename T>
static void BuildEntryIndex(std::vector<FileSys::DirectoryEntry>& entries,
const std::vector<T>& new_data, FileSys::DirectoryEntryType type) {
entries.reserve(entries.size() + new_data.size());
for (const auto& new_entry : new_data) {
auto name = new_entry->GetName();
if (type == FileSys::DirectoryEntryType::File &&
name == FileSys::GetSaveDataSizeFileName()) {
continue;
}
entries.emplace_back(name, static_cast<s8>(type),
type == FileSys::DirectoryEntryType::Directory ? 0
: new_entry->GetSize());
}
}
IDirectory::IDirectory(Core::System& system_, FileSys::VirtualDir backend_,
IDirectory::IDirectory(Core::System& system_, FileSys::VirtualDir directory_,
FileSys::OpenDirectoryMode mode)
: ServiceFramework{system_, "IDirectory"}, backend(std::move(backend_)) {
: ServiceFramework{system_, "IDirectory"},
backend(std::make_unique<FileSys::Fsa::IDirectory>(directory_, mode)) {
static const FunctionInfo functions[] = {
{0, &IDirectory::Read, "Read"},
{1, &IDirectory::GetEntryCount, "GetEntryCount"},
};
RegisterHandlers(functions);
// TODO(DarkLordZach): Verify that this is the correct behavior.
// Build entry index now to save time later.
if (True(mode & FileSys::OpenDirectoryMode::Directory)) {
BuildEntryIndex(entries, backend->GetSubdirectories(),
FileSys::DirectoryEntryType::Directory);
}
if (True(mode & FileSys::OpenDirectoryMode::File)) {
BuildEntryIndex(entries, backend->GetFiles(), FileSys::DirectoryEntryType::File);
}
}
void IDirectory::Read(HLERequestContext& ctx) {
@ -53,32 +25,26 @@ void IDirectory::Read(HLERequestContext& ctx) {
// Calculate how many entries we can fit in the output buffer
const u64 count_entries = ctx.GetWriteBufferNumElements<FileSys::DirectoryEntry>();
// Cap at total number of entries.
const u64 actual_entries = std::min(count_entries, entries.size() - next_entry_index);
// Determine data start and end
const auto* begin = reinterpret_cast<u8*>(entries.data() + next_entry_index);
const auto* end = reinterpret_cast<u8*>(entries.data() + next_entry_index + actual_entries);
const auto range_size = static_cast<std::size_t>(std::distance(begin, end));
next_entry_index += actual_entries;
s64 out_count{};
FileSys::DirectoryEntry* out_entries = nullptr;
const auto result = backend->Read(&out_count, out_entries, count_entries);
// Write the data to memory
ctx.WriteBuffer(begin, range_size);
ctx.WriteBuffer(out_entries, out_count);
IPC::ResponseBuilder rb{ctx, 4};
rb.Push(ResultSuccess);
rb.Push(actual_entries);
rb.Push(result);
rb.Push(out_count);
}
void IDirectory::GetEntryCount(HLERequestContext& ctx) {
LOG_DEBUG(Service_FS, "called");
u64 count = entries.size() - next_entry_index;
s64 out_count{};
IPC::ResponseBuilder rb{ctx, 4};
rb.Push(ResultSuccess);
rb.Push(count);
rb.Push(backend->GetEntryCount(&out_count));
rb.Push(out_count);
}
} // namespace Service::FileSystem

7
src/core/hle/service/filesystem/fsp/fs_i_directory.h
View File

@ -3,6 +3,7 @@
#pragma once
#include "core/file_sys/fsa/fs_i_directory.h"
#include "core/file_sys/vfs/vfs.h"
#include "core/hle/service/filesystem/filesystem.h"
#include "core/hle/service/service.h"
@ -15,13 +16,11 @@ namespace Service::FileSystem {
class IDirectory final : public ServiceFramework<IDirectory> {
public:
explicit IDirectory(Core::System& system_, FileSys::VirtualDir backend_,
explicit IDirectory(Core::System& system_, FileSys::VirtualDir directory_,
FileSys::OpenDirectoryMode mode);
private:
FileSys::VirtualDir backend;
std::vector<FileSys::DirectoryEntry> entries;
u64 next_entry_index = 0;
std::unique_ptr<FileSys::Fsa::IDirectory> backend;
void Read(HLERequestContext& ctx);
void GetEntryCount(HLERequestContext& ctx);

74
src/core/hle/service/filesystem/fsp/fs_i_file.cpp
View File

@ -7,8 +7,8 @@
namespace Service::FileSystem {
IFile::IFile(Core::System& system_, FileSys::VirtualFile backend_)
: ServiceFramework{system_, "IFile"}, backend(std::move(backend_)) {
IFile::IFile(Core::System& system_, FileSys::VirtualFile file_)
: ServiceFramework{system_, "IFile"}, backend{std::make_unique<FileSys::Fsa::IFile>(file_)} {
static const FunctionInfo functions[] = {
{0, &IFile::Read, "Read"},
{1, &IFile::Write, "Write"},
@ -29,79 +29,40 @@ void IFile::Read(HLERequestContext& ctx) {
LOG_DEBUG(Service_FS, "called, option={}, offset=0x{:X}, length={}", option, offset, length);
// Error checking
if (length < 0) {
LOG_ERROR(Service_FS, "Length is less than 0, length={}", length);
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(FileSys::ResultInvalidSize);
return;
}
if (offset < 0) {
LOG_ERROR(Service_FS, "Offset is less than 0, offset={}", offset);
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(FileSys::ResultInvalidOffset);
return;
}
// Read the data from the Storage backend
std::vector<u8> output = backend->ReadBytes(length, offset);
std::vector<u8> output(length);
std::size_t bytes_read;
const auto result = backend->Read(&bytes_read, offset, output.data(), length);
// Write the data to memory
ctx.WriteBuffer(output);
IPC::ResponseBuilder rb{ctx, 4};
rb.Push(ResultSuccess);
rb.Push(static_cast<u64>(output.size()));
rb.Push(result);
rb.Push(static_cast<u64>(bytes_read));
}
void IFile::Write(HLERequestContext& ctx) {
IPC::RequestParser rp{ctx};
const u64 option = rp.Pop<u64>();
const auto option = rp.PopRaw<FileSys::WriteOption>();
[[maybe_unused]] const u32 unused = rp.Pop<u32>();
const s64 offset = rp.Pop<s64>();
const s64 length = rp.Pop<s64>();
LOG_DEBUG(Service_FS, "called, option={}, offset=0x{:X}, length={}", option, offset, length);
// Error checking
if (length < 0) {
LOG_ERROR(Service_FS, "Length is less than 0, length={}", length);
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(FileSys::ResultInvalidSize);
return;
}
if (offset < 0) {
LOG_ERROR(Service_FS, "Offset is less than 0, offset={}", offset);
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(FileSys::ResultInvalidOffset);
return;
}
LOG_DEBUG(Service_FS, "called, option={}, offset=0x{:X}, length={}", option.value, offset,
length);
const auto data = ctx.ReadBuffer();
ASSERT_MSG(static_cast<s64>(data.size()) <= length,
"Attempting to write more data than requested (requested={:016X}, actual={:016X}).",
length, data.size());
// Write the data to the Storage backend
const auto write_size =
static_cast<std::size_t>(std::distance(data.begin(), data.begin() + length));
const std::size_t written = backend->Write(data.data(), write_size, offset);
ASSERT_MSG(static_cast<s64>(written) == length,
"Could not write all bytes to file (requested={:016X}, actual={:016X}).", length,
written);
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(ResultSuccess);
rb.Push(backend->Write(offset, data.data(), length, option));
}
void IFile::Flush(HLERequestContext& ctx) {
LOG_DEBUG(Service_FS, "called");
// Exists for SDK compatibiltity -- No need to flush file.
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(ResultSuccess);
rb.Push(backend->Flush());
}
void IFile::SetSize(HLERequestContext& ctx) {
@ -109,18 +70,17 @@ void IFile::SetSize(HLERequestContext& ctx) {
const u64 size = rp.Pop<u64>();
LOG_DEBUG(Service_FS, "called, size={}", size);
backend->Resize(size);
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(ResultSuccess);
rb.Push(backend->SetSize(size));
}
void IFile::GetSize(HLERequestContext& ctx) {
const u64 size = backend->GetSize();
s64 size;
const auto result = backend->GetSize(&size);
LOG_DEBUG(Service_FS, "called, size={}", size);
IPC::ResponseBuilder rb{ctx, 4};
rb.Push(ResultSuccess);
rb.Push(result);
rb.Push<u64>(size);
}

5
src/core/hle/service/filesystem/fsp/fs_i_file.h
View File

@ -3,6 +3,7 @@
#pragma once
#include "core/file_sys/fsa/fs_i_file.h"
#include "core/hle/service/filesystem/filesystem.h"
#include "core/hle/service/service.h"
@ -10,10 +11,10 @@ namespace Service::FileSystem {
class IFile final : public ServiceFramework<IFile> {
public:
explicit IFile(Core::System& system_, FileSys::VirtualFile backend_);
explicit IFile(Core::System& system_, FileSys::VirtualFile file_);
private:
FileSys::VirtualFile backend;
std::unique_ptr<FileSys::Fsa::IFile> backend;
void Read(HLERequestContext& ctx);
void Write(HLERequestContext& ctx);

41
src/core/hle/service/filesystem/fsp/fs_i_filesystem.cpp
View File

@ -9,9 +9,9 @@
namespace Service::FileSystem {
IFileSystem::IFileSystem(Core::System& system_, FileSys::VirtualDir backend_, SizeGetter size_)
: ServiceFramework{system_, "IFileSystem"}, backend{std::move(backend_)}, size{std::move(
size_)} {
IFileSystem::IFileSystem(Core::System& system_, FileSys::VirtualDir dir_, SizeGetter size_)
: ServiceFramework{system_, "IFileSystem"},
backend{std::make_unique<FileSys::Fsa::IFileSystem>(dir_)}, size{std::move(size_)} {
static const FunctionInfo functions[] = {
{0, &IFileSystem::CreateFile, "CreateFile"},
{1, &IFileSystem::DeleteFile, "DeleteFile"},
@ -39,6 +39,7 @@ void IFileSystem::CreateFile(HLERequestContext& ctx) {
const auto file_buffer = ctx.ReadBuffer();
const std::string name = Common::StringFromBuffer(file_buffer);
const auto path = FileSys::Path(name.c_str());
const u64 file_mode = rp.Pop<u64>();
const u32 file_size = rp.Pop<u32>();
@ -47,67 +48,75 @@ void IFileSystem::CreateFile(HLERequestContext& ctx) {
file_size);
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(backend.CreateFile(name, file_size));
rb.Push(backend->CreateFile(path, file_size));
}
void IFileSystem::DeleteFile(HLERequestContext& ctx) {
const auto file_buffer = ctx.ReadBuffer();
const std::string name = Common::StringFromBuffer(file_buffer);
const auto path = FileSys::Path(name.c_str());
LOG_DEBUG(Service_FS, "called. file={}", name);
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(backend.DeleteFile(name));
rb.Push(backend->DeleteFile(path));
}
void IFileSystem::CreateDirectory(HLERequestContext& ctx) {
const auto file_buffer = ctx.ReadBuffer();
const std::string name = Common::StringFromBuffer(file_buffer);
const auto path = FileSys::Path(name.c_str());
LOG_DEBUG(Service_FS, "called. directory={}", name);
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(backend.CreateDirectory(name));
rb.Push(backend->CreateDirectory(path));
}
void IFileSystem::DeleteDirectory(HLERequestContext& ctx) {
const auto file_buffer = ctx.ReadBuffer();
const std::string name = Common::StringFromBuffer(file_buffer);
const auto path = FileSys::Path(name.c_str());
LOG_DEBUG(Service_FS, "called. directory={}", name);
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(backend.DeleteDirectory(name));
rb.Push(backend->DeleteDirectory(path));
}
void IFileSystem::DeleteDirectoryRecursively(HLERequestContext& ctx) {
const auto file_buffer = ctx.ReadBuffer();
const std::string name = Common::StringFromBuffer(file_buffer);
const auto path = FileSys::Path(name.c_str());
LOG_DEBUG(Service_FS, "called. directory={}", name);
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(backend.DeleteDirectoryRecursively(name));
rb.Push(backend->DeleteDirectoryRecursively(path));
}
void IFileSystem::CleanDirectoryRecursively(HLERequestContext& ctx) {
const auto file_buffer = ctx.ReadBuffer();
const std::string name = Common::StringFromBuffer(file_buffer);
const auto path = FileSys::Path(name.c_str());
LOG_DEBUG(Service_FS, "called. Directory: {}", name);
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(backend.CleanDirectoryRecursively(name));
rb.Push(backend->CleanDirectoryRecursively(path));
}
void IFileSystem::RenameFile(HLERequestContext& ctx) {
const std::string src_name = Common::StringFromBuffer(ctx.ReadBuffer(0));
const std::string dst_name = Common::StringFromBuffer(ctx.ReadBuffer(1));
const auto src_path = FileSys::Path(src_name.c_str());
const auto dst_path = FileSys::Path(dst_name.c_str());
LOG_DEBUG(Service_FS, "called. file '{}' to file '{}'", src_name, dst_name);
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(backend.RenameFile(src_name, dst_name));
rb.Push(backend->RenameFile(src_path, dst_path));
}
void IFileSystem::OpenFile(HLERequestContext& ctx) {
@ -115,13 +124,14 @@ void IFileSystem::OpenFile(HLERequestContext& ctx) {
const auto file_buffer = ctx.ReadBuffer();
const std::string name = Common::StringFromBuffer(file_buffer);
const auto path = FileSys::Path(name.c_str());
const auto mode = static_cast<FileSys::OpenMode>(rp.Pop<u32>());
LOG_DEBUG(Service_FS, "called. file={}, mode={}", name, mode);
FileSys::VirtualFile vfs_file{};
auto result = backend.OpenFile(&vfs_file, name, mode);
auto result = backend->OpenFile(&vfs_file, path, mode);
if (result != ResultSuccess) {
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(result);
@ -140,12 +150,13 @@ void IFileSystem::OpenDirectory(HLERequestContext& ctx) {
const auto file_buffer = ctx.ReadBuffer();
const std::string name = Common::StringFromBuffer(file_buffer);
const auto path = FileSys::Path(name.c_str());
const auto mode = rp.PopRaw<FileSys::OpenDirectoryMode>();
LOG_DEBUG(Service_FS, "called. directory={}, mode={}", name, mode);
FileSys::VirtualDir vfs_dir{};
auto result = backend.OpenDirectory(&vfs_dir, name);
auto result = backend->OpenDirectory(&vfs_dir, path, mode);
if (result != ResultSuccess) {
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(result);
@ -162,11 +173,12 @@ void IFileSystem::OpenDirectory(HLERequestContext& ctx) {
void IFileSystem::GetEntryType(HLERequestContext& ctx) {
const auto file_buffer = ctx.ReadBuffer();
const std::string name = Common::StringFromBuffer(file_buffer);
const auto path = FileSys::Path(name.c_str());
LOG_DEBUG(Service_FS, "called. file={}", name);
FileSys::DirectoryEntryType vfs_entry_type{};
auto result = backend.GetEntryType(&vfs_entry_type, name);
auto result = backend->GetEntryType(&vfs_entry_type, path);
if (result != ResultSuccess) {
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(result);
@ -204,11 +216,12 @@ void IFileSystem::GetTotalSpaceSize(HLERequestContext& ctx) {
void IFileSystem::GetFileTimeStampRaw(HLERequestContext& ctx) {
const auto file_buffer = ctx.ReadBuffer();
const std::string name = Common::StringFromBuffer(file_buffer);
const auto path = FileSys::Path(name.c_str());
LOG_WARNING(Service_FS, "(Partial Implementation) called. file={}", name);
FileSys::FileTimeStampRaw vfs_timestamp{};
auto result = backend.GetFileTimeStampRaw(&vfs_timestamp, name);
auto result = backend->GetFileTimeStampRaw(&vfs_timestamp, path);
if (result != ResultSuccess) {
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(result);

5
src/core/hle/service/filesystem/fsp/fs_i_filesystem.h
View File

@ -3,6 +3,7 @@
#pragma once
#include "core/file_sys/fsa/fs_i_filesystem.h"
#include "core/file_sys/vfs/vfs.h"
#include "core/hle/service/filesystem/filesystem.h"
#include "core/hle/service/filesystem/fsp/fsp_util.h"
@ -12,7 +13,7 @@ namespace Service::FileSystem {
class IFileSystem final : public ServiceFramework<IFileSystem> {
public:
explicit IFileSystem(Core::System& system_, FileSys::VirtualDir backend_, SizeGetter size_);
explicit IFileSystem(Core::System& system_, FileSys::VirtualDir dir_, SizeGetter size_);
void CreateFile(HLERequestContext& ctx);
void DeleteFile(HLERequestContext& ctx);
@ -31,7 +32,7 @@ public:
void GetFileSystemAttribute(HLERequestContext& ctx);
private:
VfsDirectoryServiceWrapper backend;
std::unique_ptr<FileSys::Fsa::IFileSystem> backend;
SizeGetter size;
};