mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-12-23 02:42:09 +00:00
667 lines
31 KiB
C++
667 lines
31 KiB
C++
/*
|
|
* Copyright (c) Atmosphère-NX
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#include <stratosphere.hpp>
|
|
#include "../amsmitm_fs_utils.hpp"
|
|
#include "fsmitm_romfs.hpp"
|
|
|
|
namespace ams::mitm::fs {
|
|
|
|
using namespace ams::fs;
|
|
|
|
namespace romfs {
|
|
|
|
namespace {
|
|
|
|
constexpr u32 EmptyEntry = 0xFFFFFFFF;
|
|
constexpr size_t FilePartitionOffset = 0x200;
|
|
|
|
struct Header {
|
|
s64 header_size;
|
|
s64 dir_hash_table_ofs;
|
|
s64 dir_hash_table_size;
|
|
s64 dir_table_ofs;
|
|
s64 dir_table_size;
|
|
s64 file_hash_table_ofs;
|
|
s64 file_hash_table_size;
|
|
s64 file_table_ofs;
|
|
s64 file_table_size;
|
|
s64 file_partition_ofs;
|
|
};
|
|
static_assert(util::is_pod<Header>::value && sizeof(Header) == 0x50);
|
|
|
|
struct DirectoryEntry {
|
|
u32 parent;
|
|
u32 sibling;
|
|
u32 child;
|
|
u32 file;
|
|
u32 hash;
|
|
u32 name_size;
|
|
char name[];
|
|
};
|
|
static_assert(util::is_pod<DirectoryEntry>::value && sizeof(DirectoryEntry) == 0x18);
|
|
|
|
struct FileEntry {
|
|
u32 parent;
|
|
u32 sibling;
|
|
s64 offset;
|
|
s64 size;
|
|
u32 hash;
|
|
u32 name_size;
|
|
char name[];
|
|
};
|
|
static_assert(util::is_pod<FileEntry>::value && sizeof(FileEntry) == 0x20);
|
|
|
|
template<typename Entry>
|
|
class TableReader {
|
|
NON_COPYABLE(TableReader);
|
|
NON_MOVEABLE(TableReader);
|
|
private:
|
|
static constexpr size_t MaxCachedSize = (1_MB / 4);
|
|
static constexpr size_t FallbackCacheSize = 1_KB;
|
|
private:
|
|
ams::fs::IStorage *m_storage;
|
|
size_t m_offset;
|
|
size_t m_size;
|
|
size_t m_cache_idx;
|
|
void *m_cache;
|
|
u8 m_fallback_cache[FallbackCacheSize];
|
|
private:
|
|
ALWAYS_INLINE void Read(size_t ofs, void *dst, size_t size) {
|
|
R_ABORT_UNLESS(m_storage->Read(m_offset + ofs, dst, size));
|
|
}
|
|
ALWAYS_INLINE void ReloadCacheImpl(size_t idx) {
|
|
const size_t rel_ofs = idx * MaxCachedSize;
|
|
AMS_ABORT_UNLESS(rel_ofs < m_size);
|
|
const size_t new_cache_size = std::min(m_size - rel_ofs, MaxCachedSize);
|
|
this->Read(rel_ofs, m_cache, new_cache_size);
|
|
m_cache_idx = idx;
|
|
}
|
|
|
|
ALWAYS_INLINE void ReloadCache(size_t idx) {
|
|
if (m_cache_idx != idx) {
|
|
this->ReloadCacheImpl(idx);
|
|
}
|
|
}
|
|
|
|
ALWAYS_INLINE size_t GetCacheIndex(u32 ofs) {
|
|
return ofs / MaxCachedSize;
|
|
}
|
|
public:
|
|
TableReader(ams::fs::IStorage *s, size_t ofs, size_t sz) : m_storage(s), m_offset(ofs), m_size(sz), m_cache_idx(0) {
|
|
m_cache = std::malloc(std::min(sz, MaxCachedSize));
|
|
AMS_ABORT_UNLESS(m_cache != nullptr);
|
|
this->ReloadCacheImpl(0);
|
|
}
|
|
|
|
~TableReader() {
|
|
std::free(m_cache);
|
|
}
|
|
|
|
const Entry *GetEntry(u32 entry_offset) {
|
|
this->ReloadCache(this->GetCacheIndex(entry_offset));
|
|
|
|
const size_t ofs = entry_offset % MaxCachedSize;
|
|
|
|
const Entry *entry = reinterpret_cast<const Entry *>(reinterpret_cast<uintptr_t>(m_cache) + ofs);
|
|
if (AMS_UNLIKELY(this->GetCacheIndex(entry_offset) != this->GetCacheIndex(entry_offset + sizeof(Entry) + entry->name_size + sizeof(u32)))) {
|
|
this->Read(entry_offset, m_fallback_cache, std::min(m_size - entry_offset, FallbackCacheSize));
|
|
entry = reinterpret_cast<const Entry *>(m_fallback_cache);
|
|
}
|
|
return entry;
|
|
}
|
|
};
|
|
|
|
template<typename Entry>
|
|
class TableWriter {
|
|
NON_COPYABLE(TableWriter);
|
|
NON_MOVEABLE(TableWriter);
|
|
private:
|
|
static constexpr size_t MaxCachedSize = (1_MB / 4);
|
|
static constexpr size_t FallbackCacheSize = 1_KB;
|
|
private:
|
|
::FsFile *m_file;
|
|
size_t m_offset;
|
|
size_t m_size;
|
|
size_t m_cache_idx;
|
|
void *m_cache;
|
|
u8 m_fallback_cache[FallbackCacheSize];
|
|
size_t m_fallback_cache_entry_offset;
|
|
size_t m_fallback_cache_entry_size;
|
|
bool m_cache_dirty;
|
|
bool m_fallback_cache_dirty;
|
|
private:
|
|
ALWAYS_INLINE void Read(size_t ofs, void *dst, size_t sz) {
|
|
u64 read_size;
|
|
R_ABORT_UNLESS(fsFileRead(m_file, m_offset + ofs, dst, sz, 0, std::addressof(read_size)));
|
|
AMS_ABORT_UNLESS(read_size == sz);
|
|
}
|
|
|
|
ALWAYS_INLINE void Write(size_t ofs, const void *src, size_t sz) {
|
|
R_ABORT_UNLESS(fsFileWrite(m_file, m_offset + ofs, src, sz, FsWriteOption_None));
|
|
}
|
|
|
|
ALWAYS_INLINE void Flush() {
|
|
AMS_ABORT_UNLESS(!(m_cache_dirty && m_fallback_cache_dirty));
|
|
|
|
if (m_cache_dirty) {
|
|
const size_t ofs = m_cache_idx * MaxCachedSize;
|
|
this->Write(ofs, m_cache, std::min(m_size - ofs, MaxCachedSize));
|
|
m_cache_dirty = false;
|
|
}
|
|
if (m_fallback_cache_dirty) {
|
|
this->Write(m_fallback_cache_entry_offset, m_fallback_cache, m_fallback_cache_entry_size);
|
|
m_fallback_cache_dirty = false;
|
|
}
|
|
}
|
|
|
|
ALWAYS_INLINE size_t GetCacheIndex(u32 ofs) {
|
|
return ofs / MaxCachedSize;
|
|
}
|
|
|
|
ALWAYS_INLINE void RefreshCacheImpl() {
|
|
const size_t cur_cache = m_cache_idx * MaxCachedSize;
|
|
this->Read(cur_cache, m_cache, std::min(m_size - cur_cache, MaxCachedSize));
|
|
}
|
|
|
|
ALWAYS_INLINE void RefreshCache(u32 entry_offset) {
|
|
if (size_t idx = this->GetCacheIndex(entry_offset); idx != m_cache_idx || m_fallback_cache_dirty) {
|
|
this->Flush();
|
|
m_cache_idx = idx;
|
|
this->RefreshCacheImpl();
|
|
}
|
|
}
|
|
public:
|
|
TableWriter(::FsFile *f, size_t ofs, size_t sz) : m_file(f), m_offset(ofs), m_size(sz), m_cache_idx(0), m_fallback_cache_entry_offset(), m_fallback_cache_entry_size(), m_cache_dirty(), m_fallback_cache_dirty() {
|
|
const size_t cache_size = std::min(sz, MaxCachedSize);
|
|
m_cache = std::malloc(cache_size);
|
|
AMS_ABORT_UNLESS(m_cache != nullptr);
|
|
std::memset(m_cache, 0, cache_size);
|
|
std::memset(m_fallback_cache, 0, sizeof(m_fallback_cache));
|
|
for (size_t cur = 0; cur < m_size; cur += MaxCachedSize) {
|
|
this->Write(cur, m_cache, std::min(m_size - cur, MaxCachedSize));
|
|
}
|
|
}
|
|
|
|
~TableWriter() {
|
|
this->Flush();
|
|
std::free(m_cache);
|
|
}
|
|
|
|
Entry *GetEntry(u32 entry_offset, u32 name_len) {
|
|
this->RefreshCache(entry_offset);
|
|
|
|
const size_t ofs = entry_offset % MaxCachedSize;
|
|
|
|
Entry *entry = reinterpret_cast<Entry *>(reinterpret_cast<uintptr_t>(m_cache) + ofs);
|
|
if (ofs + sizeof(Entry) + util::AlignUp(name_len, sizeof(u32)) > MaxCachedSize) {
|
|
this->Flush();
|
|
|
|
m_fallback_cache_entry_offset = entry_offset;
|
|
m_fallback_cache_entry_size = sizeof(Entry) + util::AlignUp(name_len, sizeof(u32));
|
|
this->Read(m_fallback_cache_entry_offset, m_fallback_cache, m_fallback_cache_entry_size);
|
|
|
|
entry = reinterpret_cast<Entry *>(m_fallback_cache);
|
|
m_fallback_cache_dirty = true;
|
|
} else {
|
|
m_cache_dirty = true;
|
|
}
|
|
|
|
return entry;
|
|
}
|
|
};
|
|
|
|
using DirectoryTableWriter = TableWriter<DirectoryEntry>;
|
|
using FileTableWriter = TableWriter<FileEntry>;
|
|
|
|
|
|
constexpr inline u32 CalculatePathHash(u32 parent, const char *_path, u32 start, size_t path_len) {
|
|
const unsigned char *path = reinterpret_cast<const unsigned char *>(_path);
|
|
u32 hash = parent ^ 123456789;
|
|
for (size_t i = 0; i < path_len; i++) {
|
|
hash = (hash >> 5) | (hash << 27);
|
|
hash ^= path[start + i];
|
|
}
|
|
return hash;
|
|
}
|
|
|
|
constexpr inline size_t GetHashTableSize(size_t num_entries) {
|
|
if (num_entries < 3) {
|
|
return 3;
|
|
} else if (num_entries < 19) {
|
|
return num_entries | 1;
|
|
} else {
|
|
size_t 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;
|
|
}
|
|
}
|
|
|
|
constinit os::SdkMutex g_fs_romfs_path_lock;
|
|
constinit char g_fs_romfs_path_buffer[fs::EntryNameLengthMax + 1];
|
|
|
|
NOINLINE void OpenFileSystemRomfsDirectory(FsDir *out, ncm::ProgramId program_id, BuildDirectoryContext *parent, fs::OpenDirectoryMode mode, FsFileSystem *fs) {
|
|
std::scoped_lock lk(g_fs_romfs_path_lock);
|
|
parent->GetPath(g_fs_romfs_path_buffer);
|
|
R_ABORT_UNLESS(mitm::fs::OpenAtmosphereRomfsDirectory(out, program_id, g_fs_romfs_path_buffer, mode, fs));
|
|
}
|
|
|
|
}
|
|
|
|
Builder::Builder(ncm::ProgramId pr_id) : m_program_id(pr_id), m_num_dirs(0), m_num_files(0), m_dir_table_size(0), m_file_table_size(0), m_dir_hash_table_size(0), m_file_hash_table_size(0), m_file_partition_size(0) {
|
|
auto res = m_directories.emplace(std::make_unique<BuildDirectoryContext>(BuildDirectoryContext::RootTag{}));
|
|
AMS_ABORT_UNLESS(res.second);
|
|
m_root = res.first->get();
|
|
m_num_dirs = 1;
|
|
m_dir_table_size = 0x18;
|
|
}
|
|
|
|
void Builder::AddDirectory(BuildDirectoryContext **out, BuildDirectoryContext *parent_ctx, std::unique_ptr<BuildDirectoryContext> child_ctx) {
|
|
/* Set parent context member. */
|
|
child_ctx->parent = parent_ctx;
|
|
|
|
/* Check if the directory already exists. */
|
|
auto existing = m_directories.find(child_ctx);
|
|
if (existing != m_directories.end()) {
|
|
*out = existing->get();
|
|
return;
|
|
}
|
|
|
|
/* Add a new directory. */
|
|
m_num_dirs++;
|
|
m_dir_table_size += sizeof(DirectoryEntry) + util::AlignUp(child_ctx->path_len, 4);
|
|
|
|
*out = child_ctx.get();
|
|
m_directories.emplace(std::move(child_ctx));
|
|
}
|
|
|
|
void Builder::AddFile(BuildDirectoryContext *parent_ctx, std::unique_ptr<BuildFileContext> file_ctx) {
|
|
/* Set parent context member. */
|
|
file_ctx->parent = parent_ctx;
|
|
|
|
/* Check if the file already exists. */
|
|
if (m_files.find(file_ctx) != m_files.end()) {
|
|
return;
|
|
}
|
|
|
|
/* Add a new file. */
|
|
m_num_files++;
|
|
m_file_table_size += sizeof(FileEntry) + util::AlignUp(file_ctx->path_len, 4);
|
|
m_files.emplace(std::move(file_ctx));
|
|
}
|
|
|
|
void Builder::VisitDirectory(FsFileSystem *fs, BuildDirectoryContext *parent) {
|
|
FsDir dir;
|
|
|
|
/* Get number of child directories. */
|
|
s64 num_child_dirs = 0;
|
|
{
|
|
OpenFileSystemRomfsDirectory(std::addressof(dir), m_program_id, parent, OpenDirectoryMode_Directory, fs);
|
|
ON_SCOPE_EXIT { fsDirClose(std::addressof(dir)); };
|
|
R_ABORT_UNLESS(fsDirGetEntryCount(std::addressof(dir), std::addressof(num_child_dirs)));
|
|
}
|
|
AMS_ABORT_UNLESS(num_child_dirs >= 0);
|
|
|
|
{
|
|
BuildDirectoryContext **child_dirs = num_child_dirs != 0 ? reinterpret_cast<BuildDirectoryContext **>(std::malloc(sizeof(BuildDirectoryContext *) * num_child_dirs)) : nullptr;
|
|
AMS_ABORT_UNLESS(num_child_dirs == 0 || child_dirs != nullptr);
|
|
ON_SCOPE_EXIT { std::free(child_dirs); };
|
|
|
|
s64 cur_child_dir_ind = 0;
|
|
{
|
|
OpenFileSystemRomfsDirectory(std::addressof(dir), m_program_id, parent, OpenDirectoryMode_All, fs);
|
|
ON_SCOPE_EXIT { fsDirClose(std::addressof(dir)); };
|
|
|
|
s64 read_entries = 0;
|
|
while (true) {
|
|
R_ABORT_UNLESS(fsDirRead(std::addressof(dir), std::addressof(read_entries), 1, std::addressof(m_dir_entry)));
|
|
if (read_entries != 1) {
|
|
break;
|
|
}
|
|
|
|
AMS_ABORT_UNLESS(m_dir_entry.type == FsDirEntryType_Dir || m_dir_entry.type == FsDirEntryType_File);
|
|
if (m_dir_entry.type == FsDirEntryType_Dir) {
|
|
AMS_ABORT_UNLESS(child_dirs != nullptr);
|
|
|
|
BuildDirectoryContext *real_child = nullptr;
|
|
this->AddDirectory(std::addressof(real_child), parent, std::make_unique<BuildDirectoryContext>(m_dir_entry.name, strlen(m_dir_entry.name)));
|
|
AMS_ABORT_UNLESS(real_child != nullptr);
|
|
child_dirs[cur_child_dir_ind++] = real_child;
|
|
AMS_ABORT_UNLESS(cur_child_dir_ind <= num_child_dirs);
|
|
} else /* if (m_dir_entry.type == FsDirEntryType_File) */ {
|
|
this->AddFile(parent, std::make_unique<BuildFileContext>(m_dir_entry.name, strlen(m_dir_entry.name), m_dir_entry.file_size, 0, m_cur_source_type));
|
|
}
|
|
}
|
|
}
|
|
|
|
AMS_ABORT_UNLESS(num_child_dirs == cur_child_dir_ind);
|
|
for (s64 i = 0; i < num_child_dirs; i++) {
|
|
this->VisitDirectory(fs, child_dirs[i]);
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
class DirectoryTableReader : public TableReader<DirectoryEntry> {
|
|
public:
|
|
DirectoryTableReader(ams::fs::IStorage *s, size_t ofs, size_t sz) : TableReader(s, ofs, sz) { /* ... */ }
|
|
};
|
|
|
|
class FileTableReader : public TableReader<FileEntry> {
|
|
public:
|
|
FileTableReader(ams::fs::IStorage *s, size_t ofs, size_t sz) : TableReader(s, ofs, sz) { /* ... */ }
|
|
};
|
|
|
|
void Builder::VisitDirectory(BuildDirectoryContext *parent, u32 parent_offset, DirectoryTableReader &dir_table, FileTableReader &file_table) {
|
|
const DirectoryEntry *parent_entry = dir_table.GetEntry(parent_offset);
|
|
|
|
u32 cur_file_offset = parent_entry->file;
|
|
while (cur_file_offset != EmptyEntry) {
|
|
const FileEntry *cur_file = file_table.GetEntry(cur_file_offset);
|
|
|
|
this->AddFile(parent, std::make_unique<BuildFileContext>(cur_file->name, cur_file->name_size, cur_file->size, cur_file->offset, m_cur_source_type));
|
|
|
|
cur_file_offset = cur_file->sibling;
|
|
}
|
|
|
|
u32 cur_child_offset = parent_entry->child;
|
|
while (cur_child_offset != EmptyEntry) {
|
|
BuildDirectoryContext *real_child = nullptr;
|
|
u32 next_child_offset = 0;
|
|
{
|
|
const DirectoryEntry *cur_child = dir_table.GetEntry(cur_child_offset);
|
|
|
|
this->AddDirectory(std::addressof(real_child), parent, std::make_unique<BuildDirectoryContext>(cur_child->name, cur_child->name_size));
|
|
AMS_ABORT_UNLESS(real_child != nullptr);
|
|
|
|
next_child_offset = cur_child->sibling;
|
|
__asm__ __volatile__("" ::: "memory");
|
|
}
|
|
|
|
this->VisitDirectory(real_child, cur_child_offset, dir_table, file_table);
|
|
|
|
cur_child_offset = next_child_offset;
|
|
}
|
|
}
|
|
|
|
|
|
void Builder::AddSdFiles() {
|
|
/* Open Sd Card filesystem. */
|
|
FsFileSystem sd_filesystem;
|
|
R_ABORT_UNLESS(fsOpenSdCardFileSystem(std::addressof(sd_filesystem)));
|
|
ON_SCOPE_EXIT { fsFsClose(std::addressof(sd_filesystem)); };
|
|
|
|
/* If there is no romfs folder on the SD, don't bother continuing. */
|
|
{
|
|
FsDir dir;
|
|
if (R_FAILED(mitm::fs::OpenAtmosphereRomfsDirectory(std::addressof(dir), m_program_id, m_root->path.get(), OpenDirectoryMode_Directory, std::addressof(sd_filesystem)))) {
|
|
return;
|
|
}
|
|
fsDirClose(std::addressof(dir));
|
|
}
|
|
|
|
m_cur_source_type = DataSourceType::LooseSdFile;
|
|
this->VisitDirectory(std::addressof(sd_filesystem), m_root);
|
|
}
|
|
|
|
void Builder::AddStorageFiles(ams::fs::IStorage *storage, DataSourceType source_type) {
|
|
Header header;
|
|
R_ABORT_UNLESS(storage->Read(0, std::addressof(header), sizeof(Header)));
|
|
AMS_ABORT_UNLESS(header.header_size == sizeof(Header));
|
|
|
|
/* Read tables. */
|
|
DirectoryTableReader dir_table(storage, header.dir_table_ofs, header.dir_table_size);
|
|
FileTableReader file_table(storage, header.file_table_ofs, header.file_table_size);
|
|
|
|
m_cur_source_type = source_type;
|
|
this->VisitDirectory(m_root, 0x0, dir_table, file_table);
|
|
}
|
|
|
|
void Builder::Build(std::vector<SourceInfo> *out_infos) {
|
|
/* Clear output. */
|
|
out_infos->clear();
|
|
|
|
/* Open an SD card filesystem. */
|
|
FsFileSystem sd_filesystem;
|
|
R_ABORT_UNLESS(fsOpenSdCardFileSystem(std::addressof(sd_filesystem)));
|
|
ON_SCOPE_EXIT { fsFsClose(std::addressof(sd_filesystem)); };
|
|
|
|
/* Calculate hash table sizes. */
|
|
const size_t num_dir_hash_table_entries = GetHashTableSize(m_num_dirs);
|
|
const size_t num_file_hash_table_entries = GetHashTableSize(m_num_files);
|
|
m_dir_hash_table_size = sizeof(u32) * num_dir_hash_table_entries;
|
|
m_file_hash_table_size = sizeof(u32) * num_file_hash_table_entries;
|
|
|
|
/* Allocate metadata, make pointers. */
|
|
Header *header = reinterpret_cast<Header *>(std::malloc(sizeof(Header)));
|
|
std::memset(header, 0x00, sizeof(*header));
|
|
|
|
/* Open metadata file. */
|
|
const size_t metadata_size = m_dir_hash_table_size + m_dir_table_size + m_file_hash_table_size + m_file_table_size;
|
|
FsFile metadata_file;
|
|
R_ABORT_UNLESS(mitm::fs::CreateAndOpenAtmosphereSdFile(std::addressof(metadata_file), m_program_id, "romfs_metadata.bin", metadata_size));
|
|
|
|
/* Ensure later hash tables will have correct defaults. */
|
|
static_assert(EmptyEntry == 0xFFFFFFFF);
|
|
|
|
/* Emplace metadata source info. */
|
|
out_infos->emplace_back(0, sizeof(*header), DataSourceType::Memory, header);
|
|
|
|
/* Process Files. */
|
|
{
|
|
u32 entry_offset = 0;
|
|
BuildFileContext *cur_file = nullptr;
|
|
BuildFileContext *prev_file = nullptr;
|
|
for (const auto &it : m_files) {
|
|
cur_file = it.get();
|
|
|
|
/* By default, pad to 0x10 alignment. */
|
|
m_file_partition_size = util::AlignUp(m_file_partition_size, 0x10);
|
|
|
|
/* Check if extra padding is present in original source, preserve it to make our life easier. */
|
|
const bool is_storage_or_file = cur_file->source_type == DataSourceType::Storage || cur_file->source_type == DataSourceType::File;
|
|
if (prev_file != nullptr && prev_file->source_type == cur_file->source_type && is_storage_or_file) {
|
|
const s64 expected = m_file_partition_size - prev_file->offset + prev_file->orig_offset;
|
|
if (expected != cur_file->orig_offset) {
|
|
AMS_ABORT_UNLESS(expected <= cur_file->orig_offset);
|
|
m_file_partition_size += cur_file->orig_offset - expected;
|
|
}
|
|
}
|
|
|
|
/* Calculate offsets. */
|
|
cur_file->offset = m_file_partition_size;
|
|
m_file_partition_size += cur_file->size;
|
|
cur_file->entry_offset = entry_offset;
|
|
entry_offset += sizeof(FileEntry) + util::AlignUp(cur_file->path_len, 4);
|
|
|
|
/* Save current file as prev for next iteration. */
|
|
prev_file = cur_file;
|
|
}
|
|
/* Assign deferred parent/sibling ownership. */
|
|
for (auto it = m_files.rbegin(); it != m_files.rend(); it++) {
|
|
cur_file = it->get();
|
|
cur_file->sibling = cur_file->parent->file;
|
|
cur_file->parent->file = cur_file;
|
|
}
|
|
}
|
|
|
|
/* Process Directories. */
|
|
{
|
|
u32 entry_offset = 0;
|
|
BuildDirectoryContext *cur_dir = nullptr;
|
|
for (const auto &it : m_directories) {
|
|
cur_dir = it.get();
|
|
cur_dir->entry_offset = entry_offset;
|
|
entry_offset += sizeof(DirectoryEntry) + util::AlignUp(cur_dir->path_len, 4);
|
|
}
|
|
/* Assign deferred parent/sibling ownership. */
|
|
for (auto it = m_directories.rbegin(); it != m_directories.rend(); it++) {
|
|
cur_dir = it->get();
|
|
if (cur_dir == m_root) {
|
|
continue;
|
|
}
|
|
cur_dir->sibling = cur_dir->parent->child;
|
|
cur_dir->parent->child = cur_dir;
|
|
}
|
|
}
|
|
|
|
/* Populate file tables. */
|
|
{
|
|
/* Allocate the hash table. */
|
|
void *fht_buf = std::malloc(m_file_hash_table_size);
|
|
AMS_ABORT_UNLESS(fht_buf != nullptr);
|
|
u32 *file_hash_table = reinterpret_cast<u32 *>(fht_buf);
|
|
std::memset(file_hash_table, 0xFF, m_file_hash_table_size);
|
|
ON_SCOPE_EXIT {
|
|
R_ABORT_UNLESS(fsFileWrite(std::addressof(metadata_file), m_dir_hash_table_size + m_dir_table_size, file_hash_table, m_file_hash_table_size, FsWriteOption_None));
|
|
std::free(fht_buf);
|
|
};
|
|
|
|
/* Write the file table. */
|
|
{
|
|
FileTableWriter file_table(std::addressof(metadata_file), m_dir_hash_table_size + m_dir_table_size + m_file_hash_table_size, m_file_table_size);
|
|
|
|
for (const auto &it : m_files) {
|
|
BuildFileContext *cur_file = it.get();
|
|
FileEntry *cur_entry = file_table.GetEntry(cur_file->entry_offset, cur_file->path_len);
|
|
|
|
/* Set entry fields. */
|
|
cur_entry->parent = cur_file->parent->entry_offset;
|
|
cur_entry->sibling = (cur_file->sibling == nullptr) ? EmptyEntry : cur_file->sibling->entry_offset;
|
|
cur_entry->offset = cur_file->offset;
|
|
cur_entry->size = cur_file->size;
|
|
|
|
/* Insert into hash table. */
|
|
const u32 name_size = cur_file->path_len;
|
|
const size_t hash_ind = CalculatePathHash(cur_entry->parent, cur_file->path.get(), 0, name_size) % num_file_hash_table_entries;
|
|
cur_entry->hash = file_hash_table[hash_ind];
|
|
file_hash_table[hash_ind] = cur_file->entry_offset;
|
|
|
|
/* Set name. */
|
|
cur_entry->name_size = name_size;
|
|
if (name_size) {
|
|
std::memcpy(cur_entry->name, cur_file->path.get(), name_size);
|
|
for (size_t i = name_size; i < util::AlignUp(name_size, 4); i++) {
|
|
cur_entry->name[i] = 0;
|
|
}
|
|
}
|
|
|
|
/* Emplace a source. */
|
|
switch (cur_file->source_type) {
|
|
case DataSourceType::Storage:
|
|
case DataSourceType::File:
|
|
{
|
|
/* Try to compact if possible. */
|
|
auto &back = out_infos->back();
|
|
if (back.source_type == cur_file->source_type) {
|
|
back.size = cur_file->offset + FilePartitionOffset + cur_file->size - back.virtual_offset;
|
|
} else {
|
|
out_infos->emplace_back(cur_file->offset + FilePartitionOffset, cur_file->size, cur_file->source_type, cur_file->orig_offset + FilePartitionOffset);
|
|
}
|
|
}
|
|
break;
|
|
case DataSourceType::LooseSdFile:
|
|
{
|
|
char *new_path = new char[cur_file->GetPathLength() + 1];
|
|
cur_file->GetPath(new_path);
|
|
out_infos->emplace_back(cur_file->offset + FilePartitionOffset, cur_file->size, cur_file->source_type, new_path);
|
|
}
|
|
break;
|
|
AMS_UNREACHABLE_DEFAULT_CASE();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Populate directory tables. */
|
|
{
|
|
/* Allocate the hash table. */
|
|
void *dht_buf = std::malloc(m_dir_hash_table_size);
|
|
AMS_ABORT_UNLESS(dht_buf != nullptr);
|
|
u32 *dir_hash_table = reinterpret_cast<u32 *>(dht_buf);
|
|
std::memset(dir_hash_table, 0xFF, m_dir_hash_table_size);
|
|
ON_SCOPE_EXIT {
|
|
R_ABORT_UNLESS(fsFileWrite(std::addressof(metadata_file), 0, dir_hash_table, m_dir_hash_table_size, FsWriteOption_None));
|
|
std::free(dht_buf);
|
|
};
|
|
|
|
/* Write the file table. */
|
|
{
|
|
DirectoryTableWriter dir_table(std::addressof(metadata_file), m_dir_hash_table_size, m_dir_table_size);
|
|
|
|
for (const auto &it : m_directories) {
|
|
BuildDirectoryContext *cur_dir = it.get();
|
|
DirectoryEntry *cur_entry = dir_table.GetEntry(cur_dir->entry_offset, cur_dir->path_len);
|
|
|
|
/* Set entry fields. */
|
|
cur_entry->parent = cur_dir == m_root ? 0 : cur_dir->parent->entry_offset;
|
|
cur_entry->sibling = (cur_dir->sibling == nullptr) ? EmptyEntry : cur_dir->sibling->entry_offset;
|
|
cur_entry->child = (cur_dir->child == nullptr) ? EmptyEntry : cur_dir->child->entry_offset;
|
|
cur_entry->file = (cur_dir->file == nullptr) ? EmptyEntry : cur_dir->file->entry_offset;
|
|
|
|
/* Insert into hash table. */
|
|
const u32 name_size = cur_dir->path_len;
|
|
const size_t hash_ind = CalculatePathHash(cur_entry->parent, cur_dir->path.get(), 0, name_size) % num_dir_hash_table_entries;
|
|
cur_entry->hash = dir_hash_table[hash_ind];
|
|
dir_hash_table[hash_ind] = cur_dir->entry_offset;
|
|
|
|
/* Set name. */
|
|
cur_entry->name_size = name_size;
|
|
if (name_size) {
|
|
std::memcpy(cur_entry->name, cur_dir->path.get(), name_size);
|
|
for (size_t i = name_size; i < util::AlignUp(name_size, 4); i++) {
|
|
cur_entry->name[i] = 0;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Delete maps. */
|
|
m_root = nullptr;
|
|
m_directories.clear();
|
|
m_files.clear();
|
|
|
|
/* Set header fields. */
|
|
header->header_size = sizeof(*header);
|
|
header->file_hash_table_size = m_file_hash_table_size;
|
|
header->file_table_size = m_file_table_size;
|
|
header->dir_hash_table_size = m_dir_hash_table_size;
|
|
header->dir_table_size = m_dir_table_size;
|
|
header->file_partition_ofs = FilePartitionOffset;
|
|
header->dir_hash_table_ofs = util::AlignUp(FilePartitionOffset + m_file_partition_size, 4);
|
|
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;
|
|
|
|
/* Save metadata to the SD card, to save on memory space. */
|
|
{
|
|
R_ABORT_UNLESS(fsFileFlush(std::addressof(metadata_file)));
|
|
out_infos->emplace_back(header->dir_hash_table_ofs, metadata_size, DataSourceType::Metadata, new RemoteFile(metadata_file));
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
}
|