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Merge pull request #1365 from DarkLordZach/lfs 

file_sys: Add support for LayeredFS mods
This commit is contained in:
bunnei 2018-09-25 16:59:44 -04:00 committed by GitHub
parent b67c1fdf38 b3c2ec362b
commit 7b81e1e525
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
31 changed files with 1203 additions and 36 deletions
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2
src/common/common_paths.h
View File

@ -33,6 +33,8 @@
#define NAND_DIR "nand"
#define SYSDATA_DIR "sysdata"
#define KEYS_DIR "keys"
#define LOAD_DIR "load"
#define DUMP_DIR "dump"
#define LOG_DIR "log"
// Filenames

2
src/common/file_util.cpp
View File

@ -705,6 +705,8 @@ const std::string& GetUserPath(UserPath path, const std::string& new_path) {
#endif
paths.emplace(UserPath::SDMCDir, user_path + SDMC_DIR DIR_SEP);
paths.emplace(UserPath::NANDDir, user_path + NAND_DIR DIR_SEP);
paths.emplace(UserPath::LoadDir, user_path + LOAD_DIR DIR_SEP);
paths.emplace(UserPath::DumpDir, user_path + DUMP_DIR DIR_SEP);
paths.emplace(UserPath::SysDataDir, user_path + SYSDATA_DIR DIR_SEP);
paths.emplace(UserPath::KeysDir, user_path + KEYS_DIR DIR_SEP);
// TODO: Put the logs in a better location for each OS

2
src/common/file_util.h
View File

@ -29,6 +29,8 @@ enum class UserPath {
NANDDir,
RootDir,
SDMCDir,
LoadDir,
DumpDir,
SysDataDir,
UserDir,
};

5
src/core/CMakeLists.txt
View File

@ -32,6 +32,8 @@ add_library(core STATIC
file_sys/control_metadata.h
file_sys/directory.h
file_sys/errors.h
file_sys/fsmitm_romfsbuild.cpp
file_sys/fsmitm_romfsbuild.h
file_sys/mode.h
file_sys/nca_metadata.cpp
file_sys/nca_metadata.h
@ -59,10 +61,13 @@ add_library(core STATIC
file_sys/vfs.h
file_sys/vfs_concat.cpp
file_sys/vfs_concat.h
file_sys/vfs_layered.cpp
file_sys/vfs_layered.h
file_sys/vfs_offset.cpp
file_sys/vfs_offset.h
file_sys/vfs_real.cpp
file_sys/vfs_real.h
file_sys/vfs_static.h
file_sys/vfs_vector.cpp
file_sys/vfs_vector.h
file_sys/xts_archive.cpp

12
src/core/file_sys/bis_factory.cpp
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@ -2,13 +2,14 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <fmt/format.h>
#include "core/file_sys/bis_factory.h"
#include "core/file_sys/registered_cache.h"
namespace FileSys {
BISFactory::BISFactory(VirtualDir nand_root_)
: nand_root(std::move(nand_root_)),
BISFactory::BISFactory(VirtualDir nand_root_, VirtualDir load_root_)
: nand_root(std::move(nand_root_)), load_root(std::move(load_root_)),
sysnand_cache(std::make_shared<RegisteredCache>(
GetOrCreateDirectoryRelative(nand_root, "/system/Contents/registered"))),
usrnand_cache(std::make_shared<RegisteredCache>(
@ -24,4 +25,11 @@ std::shared_ptr<RegisteredCache> BISFactory::GetUserNANDContents() const {
return usrnand_cache;
}
VirtualDir BISFactory::GetModificationLoadRoot(u64 title_id) const {
// LayeredFS doesn't work on updates and title id-less homebrew
if (title_id == 0 || (title_id & 0x800) > 0)
return nullptr;
return GetOrCreateDirectoryRelative(load_root, fmt::format("/{:016X}", title_id));
}
} // namespace FileSys

5
src/core/file_sys/bis_factory.h
View File

@ -17,14 +17,17 @@ class RegisteredCache;
/// registered caches.
class BISFactory {
public:
explicit BISFactory(VirtualDir nand_root);
explicit BISFactory(VirtualDir nand_root, VirtualDir load_root);
~BISFactory();
std::shared_ptr<RegisteredCache> GetSystemNANDContents() const;
std::shared_ptr<RegisteredCache> GetUserNANDContents() const;
VirtualDir GetModificationLoadRoot(u64 title_id) const;
private:
VirtualDir nand_root;
VirtualDir load_root;
std::shared_ptr<RegisteredCache> sysnand_cache;
std::shared_ptr<RegisteredCache> usrnand_cache;

372
src/core/file_sys/fsmitm_romfsbuild.cpp Normal file
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@ -0,0 +1,372 @@
/*
* Copyright (c) 2018 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/>.
*/
/*
* Adapted by DarkLordZach for use/interaction with yuzu
*
* Modifications Copyright 2018 yuzu emulator team
* Licensed under GPLv2 or any later version
* Refer to the license.txt file included.
*/
#include <cstring>
#include "common/assert.h"
#include "core/file_sys/fsmitm_romfsbuild.h"
#include "core/file_sys/vfs.h"
#include "core/file_sys/vfs_vector.h"
namespace FileSys {
constexpr u64 FS_MAX_PATH = 0x301;
constexpr u32 ROMFS_ENTRY_EMPTY = 0xFFFFFFFF;
constexpr u32 ROMFS_FILEPARTITION_OFS = 0x200;
// Types for building a RomFS.
struct RomFSHeader {
u64 header_size;
u64 dir_hash_table_ofs;
u64 dir_hash_table_size;
u64 dir_table_ofs;
u64 dir_table_size;
u64 file_hash_table_ofs;
u64 file_hash_table_size;
u64 file_table_ofs;
u64 file_table_size;
u64 file_partition_ofs;
};
static_assert(sizeof(RomFSHeader) == 0x50, "RomFSHeader has incorrect size.");
struct RomFSDirectoryEntry {
u32 parent;
u32 sibling;
u32 child;
u32 file;
u32 hash;
u32 name_size;
};
static_assert(sizeof(RomFSDirectoryEntry) == 0x18, "RomFSDirectoryEntry has incorrect size.");
struct RomFSFileEntry {
u32 parent;
u32 sibling;
u64 offset;
u64 size;
u32 hash;
u32 name_size;
};
static_assert(sizeof(RomFSFileEntry) == 0x20, "RomFSFileEntry has incorrect size.");
struct RomFSBuildFileContext;
struct RomFSBuildDirectoryContext {
std::string path = "";
u32 cur_path_ofs = 0;
u32 path_len = 0;
u32 entry_offset = 0;
std::shared_ptr<RomFSBuildDirectoryContext> parent;
std::shared_ptr<RomFSBuildDirectoryContext> child;
std::shared_ptr<RomFSBuildDirectoryContext> sibling;
std::shared_ptr<RomFSBuildFileContext> file;
};
struct RomFSBuildFileContext {
std::string path = "";
u32 cur_path_ofs = 0;
u32 path_len = 0;
u32 entry_offset = 0;
u64 offset = 0;
u64 size = 0;
std::shared_ptr<RomFSBuildDirectoryContext> parent;
std::shared_ptr<RomFSBuildFileContext> sibling;
VirtualFile source = nullptr;
RomFSBuildFileContext() : path(""), cur_path_ofs(0), path_len(0) {}
};
static u32 romfs_calc_path_hash(u32 parent, std::string path, u32 start, size_t path_len) {
u32 hash = parent ^ 123456789;
for (u32 i = 0; i < path_len; i++) {
hash = (hash >> 5) | (hash << 27);
hash ^= path[start + i];
}
return hash;
}
static u32 romfs_get_hash_table_count(u32 num_entries) {
if (num_entries < 3) {
return 3;
} else if (num_entries < 19) {
return num_entries | 1;
}
u32 count = num_entries;
while (count % 2 == 0 || count % 3 == 0 || count % 5 == 0 || count % 7 == 0 ||
count % 11 == 0 || count % 13 == 0 || count % 17 == 0) {
count++;
}
return count;
}
void RomFSBuildContext::VisitDirectory(VirtualDir root_romfs,
std::shared_ptr<RomFSBuildDirectoryContext> parent) {
std::vector<std::shared_ptr<RomFSBuildDirectoryContext>> child_dirs;
VirtualDir dir;
if (parent->path_len == 0)
dir = root_romfs;
else
dir = root_romfs->GetDirectoryRelative(parent->path);
const auto entries = dir->GetEntries();
for (const auto& kv : entries) {
if (kv.second == VfsEntryType::Directory) {
const auto child = std::make_shared<RomFSBuildDirectoryContext>();
// Set child's path.
child->cur_path_ofs = parent->path_len + 1;
child->path_len = child->cur_path_ofs + kv.first.size();
child->path = parent->path + "/" + kv.first;
// Sanity check on path_len
ASSERT(child->path_len < FS_MAX_PATH);
if (AddDirectory(parent, child)) {
child_dirs.push_back(child);
}
} else {
const auto child = std::make_shared<RomFSBuildFileContext>();
// Set child's path.
child->cur_path_ofs = parent->path_len + 1;
child->path_len = child->cur_path_ofs + kv.first.size();
child->path = parent->path + "/" + kv.first;
// Sanity check on path_len
ASSERT(child->path_len < FS_MAX_PATH);
child->source = root_romfs->GetFileRelative(child->path);
child->size = child->source->GetSize();
AddFile(parent, child);
}
}
for (auto& child : child_dirs) {
this->VisitDirectory(root_romfs, child);
}
}
bool RomFSBuildContext::AddDirectory(std::shared_ptr<RomFSBuildDirectoryContext> parent_dir_ctx,
std::shared_ptr<RomFSBuildDirectoryContext> dir_ctx) {
// Check whether it's already in the known directories.
const auto existing = directories.find(dir_ctx->path);
if (existing != directories.end())
return false;
// Add a new directory.
num_dirs++;
dir_table_size +=
sizeof(RomFSDirectoryEntry) + ((dir_ctx->path_len - dir_ctx->cur_path_ofs + 3) & ~3);
dir_ctx->parent = parent_dir_ctx;
directories.emplace(dir_ctx->path, dir_ctx);
return true;
}
bool RomFSBuildContext::AddFile(std::shared_ptr<RomFSBuildDirectoryContext> parent_dir_ctx,
std::shared_ptr<RomFSBuildFileContext> file_ctx) {
// Check whether it's already in the known files.
const auto existing = files.find(file_ctx->path);
if (existing != files.end()) {
return false;
}
// Add a new file.
num_files++;
file_table_size +=
sizeof(RomFSFileEntry) + ((file_ctx->path_len - file_ctx->cur_path_ofs + 3) & ~3);
file_ctx->parent = parent_dir_ctx;
files.emplace(file_ctx->path, file_ctx);
return true;
}
RomFSBuildContext::RomFSBuildContext(VirtualDir base_) : base(std::move(base_)) {
root = std::make_shared<RomFSBuildDirectoryContext>();
root->path = "\0";
directories.emplace(root->path, root);
num_dirs = 1;
dir_table_size = 0x18;
VisitDirectory(base, root);
}
RomFSBuildContext::~RomFSBuildContext() = default;
std::map<u64, VirtualFile> RomFSBuildContext::Build() {
const auto dir_hash_table_entry_count = romfs_get_hash_table_count(num_dirs);
const auto file_hash_table_entry_count = romfs_get_hash_table_count(num_files);
dir_hash_table_size = 4 * dir_hash_table_entry_count;
file_hash_table_size = 4 * file_hash_table_entry_count;
// Assign metadata pointers
RomFSHeader header{};
std::vector<u32> dir_hash_table(dir_hash_table_entry_count, ROMFS_ENTRY_EMPTY);
std::vector<u32> file_hash_table(file_hash_table_entry_count, ROMFS_ENTRY_EMPTY);
std::vector<u8> dir_table(dir_table_size);
std::vector<u8> file_table(file_table_size);
// Clear out hash tables.
for (u32 i = 0; i < dir_hash_table_entry_count; i++)
dir_hash_table[i] = ROMFS_ENTRY_EMPTY;
for (u32 i = 0; i < file_hash_table_entry_count; i++)
file_hash_table[i] = ROMFS_ENTRY_EMPTY;
std::shared_ptr<RomFSBuildFileContext> cur_file;
// Determine file offsets.
u32 entry_offset = 0;
std::shared_ptr<RomFSBuildFileContext> prev_file = nullptr;
for (const auto& it : files) {
cur_file = it.second;
file_partition_size = (file_partition_size + 0xFULL) & ~0xFULL;
cur_file->offset = file_partition_size;
file_partition_size += cur_file->size;
cur_file->entry_offset = entry_offset;
entry_offset +=
sizeof(RomFSFileEntry) + ((cur_file->path_len - cur_file->cur_path_ofs + 3) & ~3);
prev_file = cur_file;
}
// Assign deferred parent/sibling ownership.
for (auto it = files.rbegin(); it != files.rend(); ++it) {
cur_file = it->second;
cur_file->sibling = cur_file->parent->file;
cur_file->parent->file = cur_file;
}
std::shared_ptr<RomFSBuildDirectoryContext> cur_dir;
// Determine directory offsets.
entry_offset = 0;
for (const auto& it : directories) {
cur_dir = it.second;
cur_dir->entry_offset = entry_offset;
entry_offset +=
sizeof(RomFSDirectoryEntry) + ((cur_dir->path_len - cur_dir->cur_path_ofs + 3) & ~3);
}
// Assign deferred parent/sibling ownership.
for (auto it = directories.rbegin(); it->second != root; ++it) {
cur_dir = it->second;
cur_dir->sibling = cur_dir->parent->child;
cur_dir->parent->child = cur_dir;
}
std::map<u64, VirtualFile> out;
// Populate file tables.
for (const auto& it : files) {
cur_file = it.second;
RomFSFileEntry cur_entry{};
cur_entry.parent = cur_file->parent->entry_offset;
cur_entry.sibling =
cur_file->sibling == nullptr ? ROMFS_ENTRY_EMPTY : cur_file->sibling->entry_offset;
cur_entry.offset = cur_file->offset;
cur_entry.size = cur_file->size;
const auto name_size = cur_file->path_len - cur_file->cur_path_ofs;
const auto hash = romfs_calc_path_hash(cur_file->parent->entry_offset, cur_file->path,
cur_file->cur_path_ofs, name_size);
cur_entry.hash = file_hash_table[hash % file_hash_table_entry_count];
file_hash_table[hash % file_hash_table_entry_count] = cur_file->entry_offset;
cur_entry.name_size = name_size;
out.emplace(cur_file->offset + ROMFS_FILEPARTITION_OFS, cur_file->source);
std::memcpy(file_table.data() + cur_file->entry_offset, &cur_entry, sizeof(RomFSFileEntry));
std::memset(file_table.data() + cur_file->entry_offset + sizeof(RomFSFileEntry), 0,
(cur_entry.name_size + 3) & ~3);
std::memcpy(file_table.data() + cur_file->entry_offset + sizeof(RomFSFileEntry),
cur_file->path.data() + cur_file->cur_path_ofs, name_size);
}
// Populate dir tables.
for (const auto& it : directories) {
cur_dir = it.second;
RomFSDirectoryEntry cur_entry{};
cur_entry.parent = cur_dir == root ? 0 : cur_dir->parent->entry_offset;
cur_entry.sibling =
cur_dir->sibling == nullptr ? ROMFS_ENTRY_EMPTY : cur_dir->sibling->entry_offset;
cur_entry.child =
cur_dir->child == nullptr ? ROMFS_ENTRY_EMPTY : cur_dir->child->entry_offset;
cur_entry.file = cur_dir->file == nullptr ? ROMFS_ENTRY_EMPTY : cur_dir->file->entry_offset;
const auto name_size = cur_dir->path_len - cur_dir->cur_path_ofs;
const auto hash = romfs_calc_path_hash(cur_dir == root ? 0 : cur_dir->parent->entry_offset,
cur_dir->path, cur_dir->cur_path_ofs, name_size);
cur_entry.hash = dir_hash_table[hash % dir_hash_table_entry_count];
dir_hash_table[hash % dir_hash_table_entry_count] = cur_dir->entry_offset;
cur_entry.name_size = name_size;
std::memcpy(dir_table.data() + cur_dir->entry_offset, &cur_entry,
sizeof(RomFSDirectoryEntry));
std::memcpy(dir_table.data() + cur_dir->entry_offset, &cur_entry,
sizeof(RomFSDirectoryEntry));
std::memset(dir_table.data() + cur_dir->entry_offset + sizeof(RomFSDirectoryEntry), 0,
(cur_entry.name_size + 3) & ~3);
std::memcpy(dir_table.data() + cur_dir->entry_offset + sizeof(RomFSDirectoryEntry),
cur_dir->path.data() + cur_dir->cur_path_ofs, name_size);
}
// Set header fields.
header.header_size = sizeof(RomFSHeader);
header.file_hash_table_size = file_hash_table_size;
header.file_table_size = file_table_size;
header.dir_hash_table_size = dir_hash_table_size;
header.dir_table_size = dir_table_size;
header.file_partition_ofs = ROMFS_FILEPARTITION_OFS;
header.dir_hash_table_ofs = (header.file_partition_ofs + file_partition_size + 3ULL) & ~3ULL;
header.dir_table_ofs = header.dir_hash_table_ofs + header.dir_hash_table_size;
header.file_hash_table_ofs = header.dir_table_ofs + header.dir_table_size;
header.file_table_ofs = header.file_hash_table_ofs + header.file_hash_table_size;
std::vector<u8> header_data(sizeof(RomFSHeader));
std::memcpy(header_data.data(), &header, header_data.size());
out.emplace(0, std::make_shared<VectorVfsFile>(header_data));
std::vector<u8> metadata(file_hash_table_size + file_table_size + dir_hash_table_size +
dir_table_size);
auto index = 0;
std::memcpy(metadata.data(), dir_hash_table.data(), dir_hash_table.size() * sizeof(u32));
index += dir_hash_table.size() * sizeof(u32);
std::memcpy(metadata.data() + index, dir_table.data(), dir_table.size());
index += dir_table.size();
std::memcpy(metadata.data() + index, file_hash_table.data(),
file_hash_table.size() * sizeof(u32));
index += file_hash_table.size() * sizeof(u32);
std::memcpy(metadata.data() + index, file_table.data(), file_table.size());
out.emplace(header.dir_hash_table_ofs, std::make_shared<VectorVfsFile>(metadata));
return out;
}
} // namespace FileSys

70
src/core/file_sys/fsmitm_romfsbuild.h Normal file
View File

@ -0,0 +1,70 @@
/*
* Copyright (c) 2018 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/>.
*/
/*
* Adapted by DarkLordZach for use/interaction with yuzu
*
* Modifications Copyright 2018 yuzu emulator team
* Licensed under GPLv2 or any later version
* Refer to the license.txt file included.
*/
#pragma once
#include <map>
#include <memory>
#include <string>
#include <boost/detail/container_fwd.hpp>
#include "common/common_types.h"
#include "core/file_sys/vfs.h"
namespace FileSys {
struct RomFSBuildDirectoryContext;
struct RomFSBuildFileContext;
struct RomFSDirectoryEntry;
struct RomFSFileEntry;
class RomFSBuildContext {
public:
explicit RomFSBuildContext(VirtualDir base);
~RomFSBuildContext();
// This finalizes the context.
std::map<u64, VirtualFile> Build();
private:
VirtualDir base;
std::shared_ptr<RomFSBuildDirectoryContext> root;
std::map<std::string, std::shared_ptr<RomFSBuildDirectoryContext>, std::less<>> directories;
std::map<std::string, std::shared_ptr<RomFSBuildFileContext>, std::less<>> files;
u64 num_dirs = 0;
u64 num_files = 0;
u64 dir_table_size = 0;
u64 file_table_size = 0;
u64 dir_hash_table_size = 0;
u64 file_hash_table_size = 0;
u64 file_partition_size = 0;
void VisitDirectory(VirtualDir filesys, std::shared_ptr<RomFSBuildDirectoryContext> parent);
bool AddDirectory(std::shared_ptr<RomFSBuildDirectoryContext> parent_dir_ctx,
std::shared_ptr<RomFSBuildDirectoryContext> dir_ctx);
bool AddFile(std::shared_ptr<RomFSBuildDirectoryContext> parent_dir_ctx,
std::shared_ptr<RomFSBuildFileContext> file_ctx);
};
} // namespace FileSys

47
src/core/file_sys/patch_manager.cpp
View File

@ -11,6 +11,7 @@
#include "core/file_sys/patch_manager.h"
#include "core/file_sys/registered_cache.h"
#include "core/file_sys/romfs.h"
#include "core/file_sys/vfs_layered.h"
#include "core/hle/service/filesystem/filesystem.h"
#include "core/loader/loader.h"
@ -31,8 +32,9 @@ std::string FormatTitleVersion(u32 version, TitleVersionFormat format) {
return fmt::format("v{}.{}.{}", bytes[3], bytes[2], bytes[1]);
}
constexpr std::array<const char*, 1> PATCH_TYPE_NAMES{
constexpr std::array<const char*, 2> PATCH_TYPE_NAMES{
"Update",
"LayeredFS",
};
std::string FormatPatchTypeName(PatchType type) {
@ -66,6 +68,42 @@ VirtualDir PatchManager::PatchExeFS(VirtualDir exefs) const {
return exefs;
}
static void ApplyLayeredFS(VirtualFile& romfs, u64 title_id, ContentRecordType type) {
const auto load_dir = Service::FileSystem::GetModificationLoadRoot(title_id);
if (type == ContentRecordType::Program && load_dir != nullptr && load_dir->GetSize() > 0) {
auto extracted = ExtractRomFS(romfs);
if (extracted != nullptr) {
auto patch_dirs = load_dir->GetSubdirectories();
std::sort(patch_dirs.begin(), patch_dirs.end(),
[](const VirtualDir& l, const VirtualDir& r) {
return l->GetName() < r->GetName();
});
std::vector<VirtualDir> layers;
layers.reserve(patch_dirs.size() + 1);
for (const auto& subdir : patch_dirs) {
auto romfs_dir = subdir->GetSubdirectory("romfs");
if (romfs_dir != nullptr)
layers.push_back(std::move(romfs_dir));
}
layers.push_back(std::move(extracted));
const auto layered = LayerDirectories(layers);
if (layered != nullptr) {
auto packed = CreateRomFS(layered);
if (packed != nullptr) {
LOG_INFO(Loader, " RomFS: LayeredFS patches applied successfully");
romfs = std::move(packed);
}
}
}
}
}
VirtualFile PatchManager::PatchRomFS(VirtualFile romfs, u64 ivfc_offset,
ContentRecordType type) const {
LOG_INFO(Loader, "Patching RomFS for title_id={:016X}, type={:02X}", title_id,
@ -89,6 +127,9 @@ VirtualFile PatchManager::PatchRomFS(VirtualFile romfs, u64 ivfc_offset,
}
}
// LayeredFS
ApplyLayeredFS(romfs, title_id, type);
return romfs;
}
@ -114,6 +155,10 @@ std::map<PatchType, std::string> PatchManager::GetPatchVersionNames() const {
}
}
const auto lfs_dir = Service::FileSystem::GetModificationLoadRoot(title_id);
if (lfs_dir != nullptr && lfs_dir->GetSize() > 0)
out.insert_or_assign(PatchType::LayeredFS, "");
return out;
}

2
src/core/file_sys/patch_manager.h
View File

@ -26,6 +26,7 @@ std::string FormatTitleVersion(u32 version,
enum class PatchType {
Update,
LayeredFS,
};
std::string FormatPatchTypeName(PatchType type);
@ -42,6 +43,7 @@ public:
// Currently tracked RomFS patches:
// - Game Updates
// - LayeredFS
VirtualFile PatchRomFS(VirtualFile base, u64 ivfc_offset,
ContentRecordType type = ContentRecordType::Program) const;

9
src/core/file_sys/registered_cache.cpp
View File

@ -18,6 +18,10 @@
#include "core/loader/loader.h"
namespace FileSys {
// The size of blocks to use when vfs raw copying into nand.
constexpr size_t VFS_RC_LARGE_COPY_BLOCK = 0x400000;
std::string RegisteredCacheEntry::DebugInfo() const {
return fmt::format("title_id={:016X}, content_type={:02X}", title_id, static_cast<u8>(type));
}
@ -121,7 +125,7 @@ VirtualFile RegisteredCache::OpenFileOrDirectoryConcat(const VirtualDir& dir,
if (concat.empty())
return nullptr;
file = FileSys::ConcatenateFiles(concat);
file = FileSys::ConcatenateFiles(concat, concat.front()->GetName());
}
return file;
@ -480,7 +484,8 @@ InstallResult RegisteredCache::RawInstallNCA(std::shared_ptr<NCA> nca, const Vfs
auto out = dir->CreateFileRelative(path);
if (out == nullptr)
return InstallResult::ErrorCopyFailed;
return copy(in, out) ? InstallResult::Success : InstallResult::ErrorCopyFailed;
return copy(in, out, VFS_RC_LARGE_COPY_BLOCK) ? InstallResult::Success
: InstallResult::ErrorCopyFailed;
}
bool RegisteredCache::RawInstallYuzuMeta(const CNMT& cnmt) {

2
src/core/file_sys/registered_cache.h
View File

@ -27,7 +27,7 @@ struct ContentRecord;
using NcaID = std::array<u8, 0x10>;
using RegisteredCacheParsingFunction = std::function<VirtualFile(const VirtualFile&, const NcaID&)>;
using VfsCopyFunction = std::function<bool(VirtualFile, VirtualFile)>;
using VfsCopyFunction = std::function<bool(const VirtualFile&, const VirtualFile&, size_t)>;
enum class InstallResult {
Success,

21
src/core/file_sys/romfs.cpp
View File

@ -4,8 +4,10 @@
#include "common/common_types.h"
#include "common/swap.h"
#include "core/file_sys/fsmitm_romfsbuild.h"
#include "core/file_sys/romfs.h"
#include "core/file_sys/vfs.h"
#include "core/file_sys/vfs_concat.h"
#include "core/file_sys/vfs_offset.h"
#include "core/file_sys/vfs_vector.h"
@ -98,7 +100,7 @@ void ProcessDirectory(VirtualFile file, std::size_t dir_offset, std::size_t file
}
}
VirtualDir ExtractRomFS(VirtualFile file) {
VirtualDir ExtractRomFS(VirtualFile file, RomFSExtractionType type) {
RomFSHeader header{};
if (file->ReadObject(&header) != sizeof(RomFSHeader))
return nullptr;
@ -117,9 +119,22 @@ VirtualDir ExtractRomFS(VirtualFile file) {
VirtualDir out = std::move(root);
while (out->GetSubdirectory("") != nullptr)
out = out->GetSubdirectory("");
while (out->GetSubdirectories().size() == 1 && out->GetFiles().empty()) {
if (out->GetSubdirectories().front()->GetName() == "data" &&
type == RomFSExtractionType::Truncated)
break;
out = out->GetSubdirectories().front();
}
return out;
}
VirtualFile CreateRomFS(VirtualDir dir) {
if (dir == nullptr)
return nullptr;
RomFSBuildContext ctx{dir};
return ConcatenateFiles<0>(ctx.Build(), dir->GetName());
}
} // namespace FileSys

15
src/core/file_sys/romfs.h
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@ -5,6 +5,7 @@
#pragma once
#include <array>
#include <map>
#include "common/common_funcs.h"
#include "common/common_types.h"
#include "common/swap.h"
@ -12,6 +13,8 @@
namespace FileSys {
struct RomFSHeader;
struct IVFCLevel {
u64_le offset;
u64_le size;
@ -29,8 +32,18 @@ struct IVFCHeader {
};
static_assert(sizeof(IVFCHeader) == 0xE0, "IVFCHeader has incorrect size.");
enum class RomFSExtractionType {
Full, // Includes data directory
Truncated, // Traverses into data directory
};
// Converts a RomFS binary blob to VFS Filesystem
// Returns nullptr on failure
VirtualDir ExtractRomFS(VirtualFile file);
VirtualDir ExtractRomFS(VirtualFile file,
RomFSExtractionType type = RomFSExtractionType::Truncated);
// Converts a VFS filesystem into a RomFS binary
// Returns nullptr on failure
VirtualFile CreateRomFS(VirtualDir dir);
} // namespace FileSys

45
src/core/file_sys/vfs.cpp
View File

@ -399,6 +399,15 @@ bool VfsDirectory::Copy(std::string_view src, std::string_view dest) {
return f2->WriteBytes(f1->ReadAllBytes()) == f1->GetSize();
}
std::map<std::string, VfsEntryType, std::less<>> VfsDirectory::GetEntries() const {
std::map<std::string, VfsEntryType, std::less<>> out;
for (const auto& dir : GetSubdirectories())
out.emplace(dir->GetName(), VfsEntryType::Directory);
for (const auto& file : GetFiles())
out.emplace(file->GetName(), VfsEntryType::File);
return out;
}
std::string VfsDirectory::GetFullPath() const {
if (IsRoot())
return GetName();
@ -454,13 +463,41 @@ bool DeepEquals(const VirtualFile& file1, const VirtualFile& file2, std::size_t
return true;
}
bool VfsRawCopy(VirtualFile src, VirtualFile dest) {
if (src == nullptr || dest == nullptr)
bool VfsRawCopy(const VirtualFile& src, const VirtualFile& dest, size_t block_size) {
if (src == nullptr || dest == nullptr || !src->IsReadable() || !dest->IsWritable())
return false;
if (!dest->Resize(src->GetSize()))
return false;
std::vector<u8> data = src->ReadAllBytes();
return dest->WriteBytes(data, 0) == data.size();
std::vector<u8> temp(std::min(block_size, src->GetSize()));
for (size_t i = 0; i < src->GetSize(); i += block_size) {
const auto read = std::min(block_size, src->GetSize() - i);
const auto block = src->Read(temp.data(), read, i);
if (dest->Write(temp.data(), read, i) != read)
return false;
}
return true;
}
bool VfsRawCopyD(const VirtualDir& src, const VirtualDir& dest, size_t block_size) {
if (src == nullptr || dest == nullptr || !src->IsReadable() || !dest->IsWritable())
return false;
for (const auto& file : src->GetFiles()) {
const auto out = dest->CreateFile(file->GetName());
if (!VfsRawCopy(file, out, block_size))
return false;
}
for (const auto& dir : src->GetSubdirectories()) {
const auto out = dest->CreateSubdirectory(dir->GetName());
if (!VfsRawCopyD(dir, out, block_size))
return false;
}
return true;
}
VirtualDir GetOrCreateDirectoryRelative(const VirtualDir& rel, std::string_view path) {

14
src/core/file_sys/vfs.h
View File

@ -4,6 +4,7 @@
#pragma once
#include <map>
#include <memory>
#include <string>
#include <string_view>
@ -265,6 +266,10 @@ public:
// dest.
virtual bool Copy(std::string_view src, std::string_view dest);
// Gets all of the entries directly in the directory (files and dirs), returning a map between
// item name -> type.
virtual std::map<std::string, VfsEntryType, std::less<>> GetEntries() const;
// Interprets the file with name file instead as a directory of type directory.
// The directory must have a constructor that takes a single argument of type
// std::shared_ptr<VfsFile>. Allows to reinterpret container files (i.e NCA, zip, XCI, etc) as a
@ -311,12 +316,17 @@ public:
};
// Compare the two files, byte-for-byte, in increments specificed by block_size
bool DeepEquals(const VirtualFile& file1, const VirtualFile& file2, std::size_t block_size = 0x200);
bool DeepEquals(const VirtualFile& file1, const VirtualFile& file2, size_t block_size = 0x1000);
// A method that copies the raw data between two different implementations of VirtualFile. If you
// are using the same implementation, it is probably better to use the Copy method in the parent
// directory of src/dest.
bool VfsRawCopy(VirtualFile src, VirtualFile dest);
bool VfsRawCopy(const VirtualFile& src, const VirtualFile& dest, size_t block_size = 0x1000);
// A method that performs a similar function to VfsRawCopy above, but instead copies entire
// directories. It suffers the same performance penalties as above and an implementation-specific
// Copy should always be preferred.
bool VfsRawCopyD(const VirtualDir& src, const VirtualDir& dest, size_t block_size = 0x1000);
// Checks if the directory at path relative to rel exists. If it does, returns that. If it does not
// it attempts to create it and returns the new dir or nullptr on failure.

38
src/core/file_sys/vfs_concat.cpp
View File

@ -5,10 +5,23 @@
#include <algorithm>
#include <utility>
#include "common/assert.h"
#include "core/file_sys/vfs_concat.h"
namespace FileSys {
static bool VerifyConcatenationMapContinuity(const std::map<u64, VirtualFile>& map) {
const auto last_valid = --map.end();
for (auto iter = map.begin(); iter != last_valid;) {
const auto old = iter++;
if (old->first + old->second->GetSize() != iter->first) {
return false;
}
}
return map.begin()->first == 0;
}
VirtualFile ConcatenateFiles(std::vector<VirtualFile> files, std::string name) {
if (files.empty())
return nullptr;
@ -27,6 +40,11 @@ ConcatenatedVfsFile::ConcatenatedVfsFile(std::vector<VirtualFile> files_, std::s
}
}
ConcatenatedVfsFile::ConcatenatedVfsFile(std::map<u64, VirtualFile> files_, std::string name)
: files(std::move(files_)), name(std::move(name)) {
ASSERT(VerifyConcatenationMapContinuity(files));
}
ConcatenatedVfsFile::~ConcatenatedVfsFile() = default;
std::string ConcatenatedVfsFile::GetName() const {
@ -62,7 +80,7 @@ bool ConcatenatedVfsFile::IsReadable() const {
}
std::size_t ConcatenatedVfsFile::Read(u8* data, std::size_t length, std::size_t offset) const {
auto entry = files.end();
auto entry = --files.end();
for (auto iter = files.begin(); iter != files.end(); ++iter) {
if (iter->first > offset) {
entry = --iter;
@ -70,20 +88,17 @@ std::size_t ConcatenatedVfsFile::Read(u8* data, std::size_t length, std::size_t
}
}
// Check if the entry should be the last one. The loop above will make it end().
if (entry == files.end() && offset < files.rbegin()->first + files.rbegin()->second->GetSize())
--entry;
if (entry == files.end())
if (entry->first + entry->second->GetSize() <= offset)
return 0;
const auto remaining = entry->second->GetSize() + offset - entry->first;
if (length > remaining) {
return entry->second->Read(data, remaining, offset - entry->first) +
Read(data + remaining, length - remaining, offset + remaining);
const auto read_in =
std::min<u64>(entry->first + entry->second->GetSize() - offset, entry->second->GetSize());
if (length > read_in) {
return entry->second->Read(data, read_in, offset - entry->first) +
Read(data + read_in, length - read_in, offset + read_in);
}
return entry->second->Read(data, length, offset - entry->first);
return entry->second->Read(data, std::min<u64>(read_in, length), offset - entry->first);
}
std::size_t ConcatenatedVfsFile::Write(const u8* data, std::size_t length, std::size_t offset) {
@ -93,4 +108,5 @@ std::size_t ConcatenatedVfsFile::Write(const u8* data, std::size_t length, std::
bool ConcatenatedVfsFile::Rename(std::string_view name) {
return false;
}
} // namespace FileSys

40
src/core/file_sys/vfs_concat.h
View File

@ -4,22 +4,25 @@
#pragma once
#include <map>
#include <memory>
#include <string_view>
#include <boost/container/flat_map.hpp>
#include "core/file_sys/vfs.h"
#include "core/file_sys/vfs_static.h"
namespace FileSys {
// Wrapper function to allow for more efficient handling of files.size() == 0, 1 cases.
VirtualFile ConcatenateFiles(std::vector<VirtualFile> files, std::string name = "");
// Class that wraps multiple vfs files and concatenates them, making reads seamless. Currently
// read-only.
class ConcatenatedVfsFile : public VfsFile {
friend VirtualFile ConcatenateFiles(std::vector<VirtualFile> files, std::string name);
template <u8 filler_byte>
friend VirtualFile ConcatenateFiles(std::map<u64, VirtualFile> files, std::string name);
ConcatenatedVfsFile(std::vector<VirtualFile> files, std::string name);
ConcatenatedVfsFile(std::map<u64, VirtualFile> files, std::string name);
public:
~ConcatenatedVfsFile() override;
@ -36,8 +39,37 @@ public:
private:
// Maps starting offset to file -- more efficient.
boost::container::flat_map<u64, VirtualFile> files;
std::map<u64, VirtualFile> files;
std::string name;
};
// Wrapper function to allow for more efficient handling of files.size() == 0, 1 cases.
VirtualFile ConcatenateFiles(std::vector<VirtualFile> files, std::string name);
// Convenience function that turns a map of offsets to files into a concatenated file, filling gaps
// with template parameter.
template <u8 filler_byte>
VirtualFile ConcatenateFiles(std::map<u64, VirtualFile> files, std::string name) {
if (files.empty())
return nullptr;
if (files.size() == 1)
return files.begin()->second;
const auto last_valid = --files.end();
for (auto iter = files.begin(); iter != last_valid;) {
const auto old = iter++;
if (old->first + old->second->GetSize() != iter->first) {
files.emplace(old->first + old->second->GetSize(),
std::make_shared<StaticVfsFile<filler_byte>>(iter->first - old->first -
old->second->GetSize()));
}
}
// Ensure the map starts at offset 0 (start of file), otherwise pad to fill.
if (files.begin()->first != 0)
files.emplace(0, std::make_shared<StaticVfsFile<filler_byte>>(files.begin()->first));
return std::shared_ptr<VfsFile>(new ConcatenatedVfsFile(std::move(files), std::move(name)));
}
} // namespace FileSys

131
src/core/file_sys/vfs_layered.cpp Normal file
View File

@ -0,0 +1,131 @@
// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include <utility>
#include "core/file_sys/vfs_layered.h"
namespace FileSys {
VirtualDir LayerDirectories(std::vector<VirtualDir> dirs, std::string name) {
if (dirs.empty())
return nullptr;
if (dirs.size() == 1)
return dirs[0];
return std::shared_ptr<VfsDirectory>(new LayeredVfsDirectory(std::move(dirs), std::move(name)));
}
LayeredVfsDirectory::LayeredVfsDirectory(std::vector<VirtualDir> dirs, std::string name)
: dirs(std::move(dirs)), name(std::move(name)) {}
LayeredVfsDirectory::~LayeredVfsDirectory() = default;
std::shared_ptr<VfsFile> LayeredVfsDirectory::GetFileRelative(std::string_view path) const {
for (const auto& layer : dirs) {
const auto file = layer->GetFileRelative(path);
if (file != nullptr)
return file;
}
return nullptr;
}
std::shared_ptr<VfsDirectory> LayeredVfsDirectory::GetDirectoryRelative(
std::string_view path) const {
std::vector<VirtualDir> out;
for (const auto& layer : dirs) {
auto dir = layer->GetDirectoryRelative(path);
if (dir != nullptr)
out.push_back(std::move(dir));
}
return LayerDirectories(std::move(out));
}
std::shared_ptr<VfsFile> LayeredVfsDirectory::GetFile(std::string_view name) const {
return GetFileRelative(name);
}
std::shared_ptr<VfsDirectory> LayeredVfsDirectory::GetSubdirectory(std::string_view name) const {
return GetDirectoryRelative(name);
}
std::string LayeredVfsDirectory::GetFullPath() const {
return dirs[0]->GetFullPath();
}
std::vector<std::shared_ptr<VfsFile>> LayeredVfsDirectory::GetFiles() const {
std::vector<VirtualFile> out;
for (const auto& layer : dirs) {
for (const auto& file : layer->GetFiles()) {
if (std::find_if(out.begin(), out.end(), [&file](const VirtualFile& comp) {
return comp->GetName() == file->GetName();
}) == out.end()) {
out.push_back(file);
}
}
}
return out;
}
std::vector<std::shared_ptr<VfsDirectory>> LayeredVfsDirectory::GetSubdirectories() const {
std::vector<std::string> names;
for (const auto& layer : dirs) {
for (const auto& sd : layer->GetSubdirectories()) {
if (std::find(names.begin(), names.end(), sd->GetName()) == names.end())
names.push_back(sd->GetName());
}
}
std::vector<VirtualDir> out;
out.reserve(names.size());
for (const auto& subdir : names)
out.push_back(GetSubdirectory(subdir));
return out;
}
bool LayeredVfsDirectory::IsWritable() const {
return false;
}
bool LayeredVfsDirectory::IsReadable() const {
return true;
}
std::string LayeredVfsDirectory::GetName() const {
return name.empty() ? dirs[0]->GetName() : name;
}
std::shared_ptr<VfsDirectory> LayeredVfsDirectory::GetParentDirectory() const {
return dirs[0]->GetParentDirectory();
}
std::shared_ptr<VfsDirectory> LayeredVfsDirectory::CreateSubdirectory(std::string_view name) {
return nullptr;
}
std::shared_ptr<VfsFile> LayeredVfsDirectory::CreateFile(std::string_view name) {
return nullptr;
}
bool LayeredVfsDirectory::DeleteSubdirectory(std::string_view name) {
return false;
}
bool LayeredVfsDirectory::DeleteFile(std::string_view name) {
return false;
}
bool LayeredVfsDirectory::Rename(std::string_view name_) {
name = name_;
return true;
}
bool LayeredVfsDirectory::ReplaceFileWithSubdirectory(VirtualFile file, VirtualDir dir) {
return false;
}
} // namespace FileSys

52
src/core/file_sys/vfs_layered.h Normal file
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@ -0,0 +1,52 @@
// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <memory>
#include "core/file_sys/vfs.h"
namespace FileSys {
// Wrapper function to allow for more efficient handling of dirs.size() == 0, 1 cases.
VirtualDir LayerDirectories(std::vector<VirtualDir> dirs, std::string name = "");
// Class that stacks multiple VfsDirectories on top of each other, attempting to read from the first
// one and falling back to the one after. The highest priority directory (overwrites all others)
// should be element 0 in the dirs vector.
class LayeredVfsDirectory : public VfsDirectory {
friend VirtualDir LayerDirectories(std::vector<VirtualDir> dirs, std::string name);
LayeredVfsDirectory(std::vector<VirtualDir> dirs, std::string name);
public:
~LayeredVfsDirectory() override;
std::shared_ptr<VfsFile> GetFileRelative(std::string_view path) const override;
std::shared_ptr<VfsDirectory> GetDirectoryRelative(std::string_view path) const override;
std::shared_ptr<VfsFile> GetFile(std::string_view name) const override;
std::shared_ptr<VfsDirectory> GetSubdirectory(std::string_view name) const override;
std::string GetFullPath() const override;
std::vector<std::shared_ptr<VfsFile>> GetFiles() const override;
std::vector<std::shared_ptr<VfsDirectory>> GetSubdirectories() const override;
bool IsWritable() const override;
bool IsReadable() const override;
std::string GetName() const override;
std::shared_ptr<VfsDirectory> GetParentDirectory() const override;
std::shared_ptr<VfsDirectory> CreateSubdirectory(std::string_view name) override;
std::shared_ptr<VfsFile> CreateFile(std::string_view name) override;
bool DeleteSubdirectory(std::string_view name) override;
bool DeleteFile(std::string_view name) override;
bool Rename(std::string_view name) override;
protected:
bool ReplaceFileWithSubdirectory(VirtualFile file, VirtualDir dir) override;
private:
std::vector<VirtualDir> dirs;
std::string name;
};
} // namespace FileSys

17
src/core/file_sys/vfs_real.cpp
View File

@ -413,6 +413,23 @@ std::string RealVfsDirectory::GetFullPath() const {
return out;
}
std::map<std::string, VfsEntryType, std::less<>> RealVfsDirectory::GetEntries() const {
if (perms == Mode::Append)
return {};
std::map<std::string, VfsEntryType, std::less<>> out;
FileUtil::ForeachDirectoryEntry(
nullptr, path,
[&out](u64* entries_out, const std::string& directory, const std::string& filename) {
const std::string full_path = directory + DIR_SEP + filename;
out.emplace(filename, FileUtil::IsDirectory(full_path) ? VfsEntryType::Directory
: VfsEntryType::File);
return true;
});
return out;
}
bool RealVfsDirectory::ReplaceFileWithSubdirectory(VirtualFile file, VirtualDir dir) {
return false;
}

1
src/core/file_sys/vfs_real.h
View File

@ -98,6 +98,7 @@ public:
bool DeleteFile(std::string_view name) override;
bool Rename(std::string_view name) override;
std::string GetFullPath() const override;
std::map<std::string, VfsEntryType, std::less<>> GetEntries() const override;
protected:
bool ReplaceFileWithSubdirectory(VirtualFile file, VirtualDir dir) override;

78
src/core/file_sys/vfs_static.h Normal file
View File

@ -0,0 +1,78 @@
// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <algorithm>
#include <memory>
#include <string_view>
#include "core/file_sys/vfs.h"
namespace FileSys {
template <u8 value>
class StaticVfsFile : public VfsFile {
public:
explicit StaticVfsFile(size_t size = 0, std::string name = "", VirtualDir parent = nullptr)
: size(size), name(std::move(name)), parent(std::move(parent)) {}
std::string GetName() const override {
return name;
}
size_t GetSize() const override {
return size;
}
bool Resize(size_t new_size) override {
size = new_size;
return true;
}
std::shared_ptr<VfsDirectory> GetContainingDirectory() const override {
return parent;
}
bool IsWritable() const override {
return false;
}
bool IsReadable() const override {
return true;
}
size_t Read(u8* data, size_t length, size_t offset) const override {
const auto read = std::min(length, size - offset);
std::fill(data, data + read, value);
return read;
}
size_t Write(const u8* data, size_t length, size_t offset) override {
return 0;
}
boost::optional<u8> ReadByte(size_t offset) const override {
if (offset < size)
return value;
return boost::none;
}
std::vector<u8> ReadBytes(size_t length, size_t offset) const override {
const auto read = std::min(length, size - offset);
return std::vector<u8>(read, value);
}
bool Rename(std::string_view new_name) override {
name = new_name;
return true;
}
private:
size_t size;
std::string name;
VirtualDir parent;
};
} // namespace FileSys

54
src/core/file_sys/vfs_vector.cpp
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@ -3,10 +3,64 @@
// Refer to the license.txt file included.
#include <algorithm>
#include <cstring>
#include <utility>
#include "core/file_sys/vfs_vector.h"
namespace FileSys {
VectorVfsFile::VectorVfsFile(std::vector<u8> initial_data, std::string name, VirtualDir parent)
: data(std::move(initial_data)), name(std::move(name)), parent(std::move(parent)) {}
VectorVfsFile::~VectorVfsFile() = default;
std::string VectorVfsFile::GetName() const {
return name;
}
size_t VectorVfsFile::GetSize() const {
return data.size();
}
bool VectorVfsFile::Resize(size_t new_size) {
data.resize(new_size);
return true;
}
std::shared_ptr<VfsDirectory> VectorVfsFile::GetContainingDirectory() const {
return parent;
}
bool VectorVfsFile::IsWritable() const {
return true;
}
bool VectorVfsFile::IsReadable() const {
return true;
}
size_t VectorVfsFile::Read(u8* data_, size_t length, size_t offset) const {
const auto read = std::min(length, data.size() - offset);
std::memcpy(data_, data.data() + offset, read);
return read;
}
size_t VectorVfsFile::Write(const u8* data_, size_t length, size_t offset) {
if (offset + length > data.size())
data.resize(offset + length);
const auto write = std::min(length, data.size() - offset);
std::memcpy(data.data(), data_, write);
return write;
}
bool VectorVfsFile::Rename(std::string_view name_) {
name = name_;
return true;
}
void VectorVfsFile::Assign(std::vector<u8> new_data) {
data = std::move(new_data);
}
VectorVfsDirectory::VectorVfsDirectory(std::vector<VirtualFile> files_,
std::vector<VirtualDir> dirs_, std::string name_,
VirtualDir parent_)

25
src/core/file_sys/vfs_vector.h
View File

@ -8,6 +8,31 @@
namespace FileSys {
// An implementation of VfsFile that is backed by a vector optionally supplied upon construction
class VectorVfsFile : public VfsFile {
public:
explicit VectorVfsFile(std::vector<u8> initial_data = {}, std::string name = "",
VirtualDir parent = nullptr);
~VectorVfsFile() override;
std::string GetName() const override;
size_t GetSize() const override;
bool Resize(size_t new_size) override;
std::shared_ptr<VfsDirectory> GetContainingDirectory() const override;
bool IsWritable() const override;
bool IsReadable() const override;
size_t Read(u8* data, size_t length, size_t offset) const override;
size_t Write(const u8* data, size_t length, size_t offset) override;
bool Rename(std::string_view name) override;
virtual void Assign(std::vector<u8> new_data);
private:
std::vector<u8> data;
VirtualDir parent;
std::string name;
};
// An implementation of VfsDirectory that maintains two vectors for subdirectories and files.
// Vector data is supplied upon construction.
class VectorVfsDirectory : public VfsDirectory {

13
src/core/hle/service/filesystem/filesystem.cpp
View File

@ -343,6 +343,15 @@ std::shared_ptr<FileSys::RegisteredCache> GetSDMCContents() {
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;
@ -354,9 +363,11 @@ void CreateFactories(const FileSys::VirtualFilesystem& vfs, bool overwrite) {
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);
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)

2
src/core/hle/service/filesystem/filesystem.h
View File

@ -52,6 +52,8 @@ std::shared_ptr<FileSys::RegisteredCache> GetSystemNANDContents();
std::shared_ptr<FileSys::RegisteredCache> GetUserNANDContents();
std::shared_ptr<FileSys::RegisteredCache> GetSDMCContents();
FileSys::VirtualDir GetModificationLoadRoot(u64 title_id);
// Creates the SaveData, SDMC, and BIS Factories. Should be called once and before any function
// above is called.
void CreateFactories(const FileSys::VirtualFilesystem& vfs, bool overwrite = true);

9
src/yuzu/game_list.cpp
View File

@ -318,9 +318,14 @@ void GameList::PopupContextMenu(const QPoint& menu_location) {
int row = item_model->itemFromIndex(item)->row();
QStandardItem* child_file = item_model->invisibleRootItem()->child(row, COLUMN_NAME);
u64 program_id = child_file->data(GameListItemPath::ProgramIdRole).toULongLong();
std::string path = child_file->data(GameListItemPath::FullPathRole).toString().toStdString();
QMenu context_menu;
QAction* open_save_location = context_menu.addAction(tr("Open Save Data Location"));
QAction* open_lfs_location = context_menu.addAction(tr("Open Mod Data Location"));
context_menu.addSeparator();
QAction* dump_romfs = context_menu.addAction(tr("Dump RomFS"));
QAction* copy_tid = context_menu.addAction(tr("Copy Title ID to Clipboard"));
QAction* navigate_to_gamedb_entry = context_menu.addAction(tr("Navigate to GameDB entry"));
open_save_location->setEnabled(program_id != 0);
@ -329,6 +334,10 @@ void GameList::PopupContextMenu(const QPoint& menu_location) {
connect(open_save_location, &QAction::triggered,
[&]() { emit OpenFolderRequested(program_id, GameListOpenTarget::SaveData); });
connect(open_lfs_location, &QAction::triggered,
[&]() { emit OpenFolderRequested(program_id, GameListOpenTarget::ModData); });
connect(dump_romfs, &QAction::triggered, [&]() { emit DumpRomFSRequested(program_id, path); });
connect(copy_tid, &QAction::triggered, [&]() { emit CopyTIDRequested(program_id); });
connect(navigate_to_gamedb_entry, &QAction::triggered,
[&]() { emit NavigateToGamedbEntryRequested(program_id, compatibility_list); });

7
src/yuzu/game_list.h
View File

@ -28,7 +28,10 @@ namespace FileSys {
class VfsFilesystem;
}
enum class GameListOpenTarget { SaveData };
enum class GameListOpenTarget {
SaveData,
ModData,
};
class GameList : public QWidget {
Q_OBJECT
@ -89,6 +92,8 @@ signals:
void GameChosen(QString game_path);
void ShouldCancelWorker();
void OpenFolderRequested(u64 program_id, GameListOpenTarget target);
void DumpRomFSRequested(u64 program_id, const std::string& game_path);
void CopyTIDRequested(u64 program_id);
void NavigateToGamedbEntryRequested(u64 program_id,
const CompatibilityList& compatibility_list);

145
src/yuzu/main.cpp
View File

@ -7,6 +7,22 @@
#include <memory>
#include <thread>
// VFS includes must be before glad as they will conflict with Windows file api, which uses defines.
#include "core/file_sys/vfs.h"
#include "core/file_sys/vfs_real.h"
// These are wrappers to avoid the calls to CreateDirectory and CreateFile becuase of the Windows
// defines.
static FileSys::VirtualDir VfsFilesystemCreateDirectoryWrapper(
const FileSys::VirtualFilesystem& vfs, const std::string& path, FileSys::Mode mode) {
return vfs->CreateDirectory(path, mode);
}
static FileSys::VirtualFile VfsDirectoryCreateFileWrapper(const FileSys::VirtualDir& dir,
const std::string& path) {
return dir->CreateFile(path);
}
#include <fmt/ostream.h>
#include <glad/glad.h>
@ -30,16 +46,18 @@
#include "common/telemetry.h"
#include "core/core.h"
#include "core/crypto/key_manager.h"
#include "core/file_sys/bis_factory.h"
#include "core/file_sys/card_image.h"
#include "core/file_sys/content_archive.h"
#include "core/file_sys/control_metadata.h"
#include "core/file_sys/patch_manager.h"
#include "core/file_sys/registered_cache.h"
#include "core/file_sys/romfs.h"
#include "core/file_sys/savedata_factory.h"
#include "core/file_sys/submission_package.h"
#include "core/file_sys/vfs_real.h"
#include "core/hle/kernel/process.h"
#include "core/hle/service/filesystem/filesystem.h"
#include "core/hle/service/filesystem/fsp_ldr.h"
#include "core/loader/loader.h"
#include "core/perf_stats.h"
#include "core/settings.h"
@ -362,6 +380,8 @@ void GMainWindow::RestoreUIState() {
void GMainWindow::ConnectWidgetEvents() {
connect(game_list, &GameList::GameChosen, this, &GMainWindow::OnGameListLoadFile);
connect(game_list, &GameList::OpenFolderRequested, this, &GMainWindow::OnGameListOpenFolder);
connect(game_list, &GameList::DumpRomFSRequested, this, &GMainWindow::OnGameListDumpRomFS);
connect(game_list, &GameList::CopyTIDRequested, this, &GMainWindow::OnGameListCopyTID);
connect(game_list, &GameList::NavigateToGamedbEntryRequested, this,
&GMainWindow::OnGameListNavigateToGamedbEntry);
@ -713,6 +733,12 @@ void GMainWindow::OnGameListOpenFolder(u64 program_id, GameListOpenTarget target
program_id, user_id, 0);
break;
}
case GameListOpenTarget::ModData: {
open_target = "Mod Data";
const auto load_dir = FileUtil::GetUserPath(FileUtil::UserPath::LoadDir);
path = fmt::format("{}{:016X}", load_dir, program_id);
break;
}
default:
UNIMPLEMENTED();
}
@ -730,6 +756,120 @@ void GMainWindow::OnGameListOpenFolder(u64 program_id, GameListOpenTarget target
QDesktopServices::openUrl(QUrl::fromLocalFile(qpath));
}
void GMainWindow::OnGameListDumpRomFS(u64 program_id, const std::string& game_path) {
const auto path = fmt::format("{}{:016X}/romfs",
FileUtil::GetUserPath(FileUtil::UserPath::DumpDir), program_id);
auto failed = [this, &path]() {
QMessageBox::warning(this, tr("RomFS Extraction Failed!"),
tr("There was an error copying the RomFS files or the user "
"cancelled the operation."));
vfs->DeleteDirectory(path);
};
const auto loader = Loader::GetLoader(vfs->OpenFile(game_path, FileSys::Mode::Read));
if (loader == nullptr) {
failed();
return;
}
FileSys::VirtualFile file;
if (loader->ReadRomFS(file) != Loader::ResultStatus::Success) {
failed();
return;
}
const auto romfs =
loader->IsRomFSUpdatable()
? FileSys::PatchManager(program_id).PatchRomFS(file, loader->ReadRomFSIVFCOffset())
: file;
const auto extracted = FileSys::ExtractRomFS(romfs, FileSys::RomFSExtractionType::Full);
if (extracted == nullptr) {
failed();
return;
}
const auto out = VfsFilesystemCreateDirectoryWrapper(vfs, path, FileSys::Mode::ReadWrite);
if (out == nullptr) {
failed();
return;
}
bool ok;
const auto res = QInputDialog::getItem(
this, tr("Select RomFS Dump Mode"),
tr("Please select the how you would like the RomFS dumped.<br>Full will copy all of the "
"files into the new directory while <br>skeleton will only create the directory "
"structure."),
{"Full", "Skeleton"}, 0, false, &ok);
if (!ok)
failed();
const auto full = res == "Full";
const static std::function<size_t(const FileSys::VirtualDir&, bool)> calculate_entry_size =
[](const FileSys::VirtualDir& dir, bool full) {
size_t out = 0;
for (const auto& subdir : dir->GetSubdirectories())
out += 1 + calculate_entry_size(subdir, full);
return out + full ? dir->GetFiles().size() : 0;
};
const auto entry_size = calculate_entry_size(extracted, full);
QProgressDialog progress(tr("Extracting RomFS..."), tr("Cancel"), 0, entry_size, this);
progress.setWindowModality(Qt::WindowModal);
progress.setMinimumDuration(100);
const static std::function<bool(QProgressDialog&, const FileSys::VirtualDir&,
const FileSys::VirtualDir&, size_t, bool)>
qt_raw_copy = [](QProgressDialog& dialog, const FileSys::VirtualDir& src,
const FileSys::VirtualDir& dest, size_t block_size, bool full) {
if (src == nullptr || dest == nullptr || !src->IsReadable() || !dest->IsWritable())
return false;
if (dialog.wasCanceled())
return false;
if (full) {
for (const auto& file : src->GetFiles()) {
const auto out = VfsDirectoryCreateFileWrapper(dest, file->GetName());
if (!FileSys::VfsRawCopy(file, out, block_size))
return false;
dialog.setValue(dialog.value() + 1);
if (dialog.wasCanceled())
return false;
}
}
for (const auto& dir : src->GetSubdirectories()) {
const auto out = dest->CreateSubdirectory(dir->GetName());
if (!qt_raw_copy(dialog, dir, out, block_size, full))
return false;
dialog.setValue(dialog.value() + 1);
if (dialog.wasCanceled())
return false;
}
return true;
};
if (qt_raw_copy(progress, extracted, out, 0x400000, full)) {
progress.close();
QMessageBox::information(this, tr("RomFS Extraction Succeeded!"),
tr("The operation completed successfully."));
QDesktopServices::openUrl(QUrl::fromLocalFile(QString::fromStdString(path)));
} else {
progress.close();
failed();
}
}
void GMainWindow::OnGameListCopyTID(u64 program_id) {
QClipboard* clipboard = QGuiApplication::clipboard();
clipboard->setText(QString::fromStdString(fmt::format("{:016X}", program_id)));
}
void GMainWindow::OnGameListNavigateToGamedbEntry(u64 program_id,
const CompatibilityList& compatibility_list) {
const auto it = FindMatchingCompatibilityEntry(compatibility_list, program_id);
@ -790,7 +930,8 @@ void GMainWindow::OnMenuInstallToNAND() {
return;
}
const auto qt_raw_copy = [this](FileSys::VirtualFile src, FileSys::VirtualFile dest) {
const auto qt_raw_copy = [this](const FileSys::VirtualFile& src,
const FileSys::VirtualFile& dest, size_t block_size) {
if (src == nullptr || dest == nullptr)
return false;
if (!dest->Resize(src->GetSize()))

2
src/yuzu/main.h
View File

@ -138,6 +138,8 @@ private slots:
/// Called whenever a user selects a game in the game list widget.
void OnGameListLoadFile(QString game_path);
void OnGameListOpenFolder(u64 program_id, GameListOpenTarget target);
void OnGameListDumpRomFS(u64 program_id, const std::string& game_path);
void OnGameListCopyTID(u64 program_id);
void OnGameListNavigateToGamedbEntry(u64 program_id,
const CompatibilityList& compatibility_list);
void OnMenuLoadFile();