mirror of
https://github.com/yuzu-emu/yuzu-android
synced 2025-01-03 21:51:21 -08:00
7e5e4f8d7a
We were trying to delete things in the current directory instead of the actual filesystem directory. This may fix some savedata issues in some games.
240 lines
7.5 KiB
C++
240 lines
7.5 KiB
C++
// Copyright 2018 yuzu emulator team
|
|
// Licensed under GPLv2 or any later version
|
|
// Refer to the license.txt file included.
|
|
|
|
#include <cstring>
|
|
#include <memory>
|
|
#include "common/common_types.h"
|
|
#include "common/logging/log.h"
|
|
#include "core/file_sys/disk_filesystem.h"
|
|
#include "core/file_sys/errors.h"
|
|
|
|
namespace FileSys {
|
|
|
|
static std::string ModeFlagsToString(Mode mode) {
|
|
std::string mode_str;
|
|
u32 mode_flags = static_cast<u32>(mode);
|
|
|
|
// Calculate the correct open mode for the file.
|
|
if ((mode_flags & static_cast<u32>(Mode::Read)) &&
|
|
(mode_flags & static_cast<u32>(Mode::Write))) {
|
|
if (mode_flags & static_cast<u32>(Mode::Append))
|
|
mode_str = "a+";
|
|
else
|
|
mode_str = "r+";
|
|
} else {
|
|
if (mode_flags & static_cast<u32>(Mode::Read))
|
|
mode_str = "r";
|
|
else if (mode_flags & static_cast<u32>(Mode::Append))
|
|
mode_str = "a";
|
|
else if (mode_flags & static_cast<u32>(Mode::Write))
|
|
mode_str = "w";
|
|
}
|
|
|
|
mode_str += "b";
|
|
|
|
return mode_str;
|
|
}
|
|
|
|
std::string Disk_FileSystem::GetName() const {
|
|
return "Disk";
|
|
}
|
|
|
|
ResultVal<std::unique_ptr<StorageBackend>> Disk_FileSystem::OpenFile(const std::string& path,
|
|
Mode mode) const {
|
|
|
|
// Calculate the correct open mode for the file.
|
|
std::string mode_str = ModeFlagsToString(mode);
|
|
|
|
std::string full_path = base_directory + path;
|
|
auto file = std::make_shared<FileUtil::IOFile>(full_path, mode_str.c_str());
|
|
|
|
if (!file->IsOpen()) {
|
|
return ERROR_PATH_NOT_FOUND;
|
|
}
|
|
|
|
return MakeResult<std::unique_ptr<StorageBackend>>(
|
|
std::make_unique<Disk_Storage>(std::move(file)));
|
|
}
|
|
|
|
ResultCode Disk_FileSystem::DeleteFile(const std::string& path) const {
|
|
std::string full_path = base_directory + path;
|
|
|
|
if (!FileUtil::Exists(full_path)) {
|
|
return ERROR_PATH_NOT_FOUND;
|
|
}
|
|
|
|
FileUtil::Delete(full_path);
|
|
|
|
return RESULT_SUCCESS;
|
|
}
|
|
|
|
ResultCode Disk_FileSystem::RenameFile(const std::string& src_path,
|
|
const std::string& dest_path) const {
|
|
const std::string full_src_path = base_directory + src_path;
|
|
const std::string full_dest_path = base_directory + dest_path;
|
|
|
|
if (!FileUtil::Exists(full_src_path)) {
|
|
return ERROR_PATH_NOT_FOUND;
|
|
}
|
|
// TODO(wwylele): Use correct error code
|
|
return FileUtil::Rename(full_src_path, full_dest_path) ? RESULT_SUCCESS : ResultCode(-1);
|
|
}
|
|
|
|
ResultCode Disk_FileSystem::DeleteDirectory(const Path& path) const {
|
|
LOG_WARNING(Service_FS, "(STUBBED) called");
|
|
// TODO(wwylele): Use correct error code
|
|
return ResultCode(-1);
|
|
}
|
|
|
|
ResultCode Disk_FileSystem::DeleteDirectoryRecursively(const Path& path) const {
|
|
LOG_WARNING(Service_FS, "(STUBBED) called");
|
|
// TODO(wwylele): Use correct error code
|
|
return ResultCode(-1);
|
|
}
|
|
|
|
ResultCode Disk_FileSystem::CreateFile(const std::string& path, u64 size) const {
|
|
LOG_WARNING(Service_FS, "(STUBBED) called");
|
|
|
|
std::string full_path = base_directory + path;
|
|
if (size == 0) {
|
|
FileUtil::CreateEmptyFile(full_path);
|
|
return RESULT_SUCCESS;
|
|
}
|
|
|
|
FileUtil::IOFile file(full_path, "wb");
|
|
// Creates a sparse file (or a normal file on filesystems without the concept of sparse files)
|
|
// We do this by seeking to the right size, then writing a single null byte.
|
|
if (file.Seek(size - 1, SEEK_SET) && file.WriteBytes("", 1) == 1) {
|
|
return RESULT_SUCCESS;
|
|
}
|
|
|
|
LOG_ERROR(Service_FS, "Too large file");
|
|
// TODO(Subv): Find out the correct error code
|
|
return ResultCode(-1);
|
|
}
|
|
|
|
ResultCode Disk_FileSystem::CreateDirectory(const std::string& path) const {
|
|
// TODO(Subv): Perform path validation to prevent escaping the emulator sandbox.
|
|
std::string full_path = base_directory + path;
|
|
|
|
if (FileUtil::CreateDir(full_path)) {
|
|
return RESULT_SUCCESS;
|
|
}
|
|
|
|
LOG_CRITICAL(Service_FS, "(unreachable) Unknown error creating {}", full_path);
|
|
// TODO(wwylele): Use correct error code
|
|
return ResultCode(-1);
|
|
}
|
|
|
|
ResultCode Disk_FileSystem::RenameDirectory(const Path& src_path, const Path& dest_path) const {
|
|
LOG_WARNING(Service_FS, "(STUBBED) called");
|
|
// TODO(wwylele): Use correct error code
|
|
return ResultCode(-1);
|
|
}
|
|
|
|
ResultVal<std::unique_ptr<DirectoryBackend>> Disk_FileSystem::OpenDirectory(
|
|
const std::string& path) const {
|
|
|
|
std::string full_path = base_directory + path;
|
|
|
|
if (!FileUtil::IsDirectory(full_path)) {
|
|
// TODO(Subv): Find the correct error code for this.
|
|
return ResultCode(-1);
|
|
}
|
|
|
|
auto directory = std::make_unique<Disk_Directory>(full_path);
|
|
return MakeResult<std::unique_ptr<DirectoryBackend>>(std::move(directory));
|
|
}
|
|
|
|
u64 Disk_FileSystem::GetFreeSpaceSize() const {
|
|
LOG_WARNING(Service_FS, "(STUBBED) called");
|
|
return 0;
|
|
}
|
|
|
|
ResultVal<FileSys::EntryType> Disk_FileSystem::GetEntryType(const std::string& path) const {
|
|
std::string full_path = base_directory + path;
|
|
if (!FileUtil::Exists(full_path)) {
|
|
return ERROR_PATH_NOT_FOUND;
|
|
}
|
|
|
|
if (FileUtil::IsDirectory(full_path))
|
|
return MakeResult(EntryType::Directory);
|
|
|
|
return MakeResult(EntryType::File);
|
|
}
|
|
|
|
ResultVal<size_t> Disk_Storage::Read(const u64 offset, const size_t length, u8* buffer) const {
|
|
LOG_TRACE(Service_FS, "called offset={}, length={}", offset, length);
|
|
file->Seek(offset, SEEK_SET);
|
|
return MakeResult<size_t>(file->ReadBytes(buffer, length));
|
|
}
|
|
|
|
ResultVal<size_t> Disk_Storage::Write(const u64 offset, const size_t length, const bool flush,
|
|
const u8* buffer) const {
|
|
LOG_WARNING(Service_FS, "(STUBBED) called");
|
|
file->Seek(offset, SEEK_SET);
|
|
size_t written = file->WriteBytes(buffer, length);
|
|
if (flush) {
|
|
file->Flush();
|
|
}
|
|
return MakeResult<size_t>(written);
|
|
}
|
|
|
|
u64 Disk_Storage::GetSize() const {
|
|
return file->GetSize();
|
|
}
|
|
|
|
bool Disk_Storage::SetSize(const u64 size) const {
|
|
file->Resize(size);
|
|
file->Flush();
|
|
return true;
|
|
}
|
|
|
|
Disk_Directory::Disk_Directory(const std::string& path) {
|
|
unsigned size = FileUtil::ScanDirectoryTree(path, directory);
|
|
directory.size = size;
|
|
directory.isDirectory = true;
|
|
children_iterator = directory.children.begin();
|
|
}
|
|
|
|
u64 Disk_Directory::Read(const u64 count, Entry* entries) {
|
|
u64 entries_read = 0;
|
|
|
|
while (entries_read < count && children_iterator != directory.children.cend()) {
|
|
const FileUtil::FSTEntry& file = *children_iterator;
|
|
const std::string& filename = file.virtualName;
|
|
Entry& entry = entries[entries_read];
|
|
|
|
LOG_TRACE(Service_FS, "File {}: size={} dir={}", filename, file.size, file.isDirectory);
|
|
|
|
// TODO(Link Mauve): use a proper conversion to UTF-16.
|
|
for (size_t j = 0; j < FILENAME_LENGTH; ++j) {
|
|
entry.filename[j] = filename[j];
|
|
if (!filename[j])
|
|
break;
|
|
}
|
|
|
|
if (file.isDirectory) {
|
|
entry.file_size = 0;
|
|
entry.type = EntryType::Directory;
|
|
} else {
|
|
entry.file_size = file.size;
|
|
entry.type = EntryType::File;
|
|
}
|
|
|
|
++entries_read;
|
|
++children_iterator;
|
|
}
|
|
return entries_read;
|
|
}
|
|
|
|
u64 Disk_Directory::GetEntryCount() const {
|
|
// We convert the children iterator into a const_iterator to allow template argument deduction
|
|
// in std::distance.
|
|
std::vector<FileUtil::FSTEntry>::const_iterator current = children_iterator;
|
|
return std::distance(current, directory.children.end());
|
|
}
|
|
|
|
} // namespace FileSys
|