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065867e2c2
* common: fs: fs_types: Create filesystem types Contains various filesystem types used by the Common::FS library * common: fs: fs_util: Add std::string to std::u8string conversion utility * common: fs: path_util: Add utlity functions for paths Contains various utility functions for getting or manipulating filesystem paths used by the Common::FS library * common: fs: file: Rewrite the IOFile implementation * common: fs: Reimplement Common::FS library using std::filesystem * common: fs: fs_paths: Add fs_paths to replace common_paths * common: fs: path_util: Add the rest of the path functions * common: Remove the previous Common::FS implementation * general: Remove unused fs includes * string_util: Remove unused function and include * nvidia_flags: Migrate to the new Common::FS library * settings: Migrate to the new Common::FS library * logging: backend: Migrate to the new Common::FS library * core: Migrate to the new Common::FS library * perf_stats: Migrate to the new Common::FS library * reporter: Migrate to the new Common::FS library * telemetry_session: Migrate to the new Common::FS library * key_manager: Migrate to the new Common::FS library * bis_factory: Migrate to the new Common::FS library * registered_cache: Migrate to the new Common::FS library * xts_archive: Migrate to the new Common::FS library * service: acc: Migrate to the new Common::FS library * applets/profile: Migrate to the new Common::FS library * applets/web: Migrate to the new Common::FS library * service: filesystem: Migrate to the new Common::FS library * loader: Migrate to the new Common::FS library * gl_shader_disk_cache: Migrate to the new Common::FS library * nsight_aftermath_tracker: Migrate to the new Common::FS library * vulkan_library: Migrate to the new Common::FS library * configure_debug: Migrate to the new Common::FS library * game_list_worker: Migrate to the new Common::FS library * config: Migrate to the new Common::FS library * configure_filesystem: Migrate to the new Common::FS library * configure_per_game_addons: Migrate to the new Common::FS library * configure_profile_manager: Migrate to the new Common::FS library * configure_ui: Migrate to the new Common::FS library * input_profiles: Migrate to the new Common::FS library * yuzu_cmd: config: Migrate to the new Common::FS library * yuzu_cmd: Migrate to the new Common::FS library * vfs_real: Migrate to the new Common::FS library * vfs: Migrate to the new Common::FS library * vfs_libzip: Migrate to the new Common::FS library * service: bcat: Migrate to the new Common::FS library * yuzu: main: Migrate to the new Common::FS library * vfs_real: Delete the contents of an existing file in CreateFile Current usages of CreateFile expect to delete the contents of an existing file, retain this behavior for now. * input_profiles: Don't iterate the input profile dir if it does not exist Silences an error produced in the log if the directory does not exist. * game_list_worker: Skip parsing file if the returned VfsFile is nullptr Prevents crashes in GetLoader when the virtual file is nullptr * common: fs: Validate paths for path length * service: filesystem: Open the mod load directory as read only
116 lines
3.7 KiB
C++
116 lines
3.7 KiB
C++
// Copyright 2018 yuzu emulator team
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include <algorithm>
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#include <cstddef>
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#include <cstring>
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#include <iterator>
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#include <utility>
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#include "common/logging/log.h"
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#include "core/file_sys/partition_filesystem.h"
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#include "core/file_sys/vfs_offset.h"
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#include "core/loader/loader.h"
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namespace FileSys {
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bool PartitionFilesystem::Header::HasValidMagicValue() const {
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return magic == Common::MakeMagic('H', 'F', 'S', '0') ||
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magic == Common::MakeMagic('P', 'F', 'S', '0');
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}
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PartitionFilesystem::PartitionFilesystem(VirtualFile file) {
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// At least be as large as the header
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if (file->GetSize() < sizeof(Header)) {
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status = Loader::ResultStatus::ErrorBadPFSHeader;
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return;
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}
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// For cartridges, HFSs can get very large, so we need to calculate the size up to
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// the actual content itself instead of just blindly reading in the entire file.
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if (sizeof(Header) != file->ReadObject(&pfs_header)) {
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status = Loader::ResultStatus::ErrorBadPFSHeader;
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return;
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}
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if (!pfs_header.HasValidMagicValue()) {
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status = Loader::ResultStatus::ErrorBadPFSHeader;
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return;
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}
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is_hfs = pfs_header.magic == Common::MakeMagic('H', 'F', 'S', '0');
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std::size_t entry_size = is_hfs ? sizeof(HFSEntry) : sizeof(PFSEntry);
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std::size_t metadata_size =
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sizeof(Header) + (pfs_header.num_entries * entry_size) + pfs_header.strtab_size;
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// Actually read in now...
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std::vector<u8> file_data = file->ReadBytes(metadata_size);
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const std::size_t total_size = file_data.size();
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if (total_size != metadata_size) {
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status = Loader::ResultStatus::ErrorIncorrectPFSFileSize;
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return;
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}
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std::size_t entries_offset = sizeof(Header);
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std::size_t strtab_offset = entries_offset + (pfs_header.num_entries * entry_size);
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content_offset = strtab_offset + pfs_header.strtab_size;
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for (u16 i = 0; i < pfs_header.num_entries; i++) {
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FSEntry entry;
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memcpy(&entry, &file_data[entries_offset + (i * entry_size)], sizeof(FSEntry));
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std::string name(
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reinterpret_cast<const char*>(&file_data[strtab_offset + entry.strtab_offset]));
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offsets.insert_or_assign(name, content_offset + entry.offset);
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sizes.insert_or_assign(name, entry.size);
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pfs_files.emplace_back(std::make_shared<OffsetVfsFile>(
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file, entry.size, content_offset + entry.offset, std::move(name)));
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}
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status = Loader::ResultStatus::Success;
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}
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PartitionFilesystem::~PartitionFilesystem() = default;
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Loader::ResultStatus PartitionFilesystem::GetStatus() const {
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return status;
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}
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std::map<std::string, u64> PartitionFilesystem::GetFileOffsets() const {
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return offsets;
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}
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std::map<std::string, u64> PartitionFilesystem::GetFileSizes() const {
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return sizes;
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}
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std::vector<VirtualFile> PartitionFilesystem::GetFiles() const {
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return pfs_files;
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}
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std::vector<VirtualDir> PartitionFilesystem::GetSubdirectories() const {
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return {};
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}
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std::string PartitionFilesystem::GetName() const {
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return is_hfs ? "HFS0" : "PFS0";
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}
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VirtualDir PartitionFilesystem::GetParentDirectory() const {
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// TODO(DarkLordZach): Add support for nested containers.
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return nullptr;
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}
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void PartitionFilesystem::PrintDebugInfo() const {
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LOG_DEBUG(Service_FS, "Magic: {:.4}", pfs_header.magic);
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LOG_DEBUG(Service_FS, "Files: {}", pfs_header.num_entries);
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for (u32 i = 0; i < pfs_header.num_entries; i++) {
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LOG_DEBUG(Service_FS, " > File {}: {} (0x{:X} bytes)", i,
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pfs_files[i]->GetName(), pfs_files[i]->GetSize());
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}
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}
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} // namespace FileSys
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