mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-14 07:56:45 +00:00
454 lines
22 KiB
C++
454 lines
22 KiB
C++
|
/*
|
||
|
|
* Copyright (c) 2018-2019 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(std::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(std::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(std::is_pod<FileEntry>::value && sizeof(FileEntry) == 0x20);
|
||
|
|
|
||
|
|
constexpr inline DirectoryEntry *GetDirectoryEntry(void *dir_table, u32 offset) {
|
||
|
|
return reinterpret_cast<DirectoryEntry *>(reinterpret_cast<uintptr_t>(dir_table) + offset);
|
||
|
|
}
|
||
|
|
|
||
|
|
constexpr inline FileEntry *GetFileEntry(void *file_table, u32 offset) {
|
||
|
|
return reinterpret_cast<FileEntry *>(reinterpret_cast<uintptr_t>(file_table) + offset);
|
||
|
|
}
|
||
|
|
|
||
|
|
constexpr inline const DirectoryEntry *GetDirectoryEntry(const void *dir_table, u32 offset) {
|
||
|
|
return reinterpret_cast<const DirectoryEntry *>(reinterpret_cast<uintptr_t>(dir_table) + offset);
|
||
|
|
}
|
||
|
|
|
||
|
|
constexpr inline const FileEntry *GetFileEntry(const void *file_table, u32 offset) {
|
||
|
|
return reinterpret_cast<const FileEntry *>(reinterpret_cast<uintptr_t>(file_table) + offset);
|
||
|
|
}
|
||
|
|
|
||
|
|
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;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
Builder::Builder(ncm::ProgramId pr_id) : program_id(pr_id), num_dirs(0), num_files(0), dir_table_size(0), file_table_size(0), dir_hash_table_size(0), file_hash_table_size(0), file_partition_size(0) {
|
||
|
|
auto res = this->directories.emplace("", std::make_unique<BuildDirectoryContext>(BuildDirectoryContext::RootTag{}));
|
||
|
|
AMS_ASSERT(res.second);
|
||
|
|
this->root = res.first->second.get();
|
||
|
|
this->num_dirs = 1;
|
||
|
|
this->dir_table_size = 0x18;
|
||
|
|
}
|
||
|
|
|
||
|
|
void Builder::AddDirectory(BuildDirectoryContext **out, BuildDirectoryContext *parent_ctx, std::unique_ptr<BuildDirectoryContext> child_ctx) {
|
||
|
|
/* Check if the directory already exists. */
|
||
|
|
auto existing = this->directories.find(child_ctx->path.get());
|
||
|
|
if (existing != this->directories.end()) {
|
||
|
|
*out = existing->second.get();
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Add a new directory. */
|
||
|
|
this->num_dirs++;
|
||
|
|
this->dir_table_size += sizeof(DirectoryEntry) + util::AlignUp(child_ctx->path_len - child_ctx->cur_path_ofs, 4);
|
||
|
|
child_ctx->parent = parent_ctx;
|
||
|
|
|
||
|
|
*out = child_ctx.get();
|
||
|
|
this->directories.emplace(child_ctx->path.get(), std::move(child_ctx));
|
||
|
|
}
|
||
|
|
|
||
|
|
void Builder::AddFile(BuildDirectoryContext *parent_ctx, std::unique_ptr<BuildFileContext> file_ctx) {
|
||
|
|
/* Check if the file already exists. */
|
||
|
|
if (this->files.find(file_ctx->path.get()) != this->files.end()) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Add a new file. */
|
||
|
|
this->num_files++;
|
||
|
|
this->file_table_size += sizeof(FileEntry) + util::AlignUp(file_ctx->path_len - file_ctx->cur_path_ofs, 4);
|
||
|
|
file_ctx->parent = parent_ctx;
|
||
|
|
this->files.emplace(file_ctx->path.get(), std::move(file_ctx));
|
||
|
|
}
|
||
|
|
|
||
|
|
void Builder::VisitDirectory(FsFileSystem *fs, BuildDirectoryContext *parent) {
|
||
|
|
FsDir dir;
|
||
|
|
|
||
|
|
/* Get number of child directories. */
|
||
|
|
s64 num_child_dirs = 0;
|
||
|
|
{
|
||
|
|
R_ASSERT(mitm::fs::OpenAtmosphereRomfsDirectory(&dir, this->program_id, parent->path.get(), OpenDirectoryMode_Directory, fs));
|
||
|
|
ON_SCOPE_EXIT { fsDirClose(&dir); };
|
||
|
|
R_ASSERT(fsDirGetEntryCount(&dir, &num_child_dirs));
|
||
|
|
}
|
||
|
|
AMS_ASSERT(num_child_dirs >= 0);
|
||
|
|
|
||
|
|
{
|
||
|
|
BuildDirectoryContext **child_dirs = reinterpret_cast<BuildDirectoryContext **>(std::malloc(sizeof(BuildDirectoryContext *) * num_child_dirs));
|
||
|
|
ON_SCOPE_EXIT { std::free(child_dirs); };
|
||
|
|
AMS_ASSERT(child_dirs != nullptr);
|
||
|
|
s64 cur_child_dir_ind = 0;
|
||
|
|
|
||
|
|
R_ASSERT(mitm::fs::OpenAtmosphereRomfsDirectory(&dir, this->program_id, parent->path.get(), OpenDirectoryMode_All, fs));
|
||
|
|
{
|
||
|
|
ON_SCOPE_EXIT { fsDirClose(&dir); };
|
||
|
|
|
||
|
|
s64 read_entries = 0;
|
||
|
|
while (true) {
|
||
|
|
R_ASSERT(fsDirRead(&dir, &read_entries, 1, &this->dir_entry));
|
||
|
|
if (read_entries != 1) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
AMS_ASSERT(this->dir_entry.type == FsDirEntryType_Dir || this->dir_entry.type == FsDirEntryType_File);
|
||
|
|
if (this->dir_entry.type == FsDirEntryType_Dir) {
|
||
|
|
BuildDirectoryContext *real_child = nullptr;
|
||
|
|
this->AddDirectory(&real_child, parent, std::make_unique<BuildDirectoryContext>(parent->path.get(), parent->path_len, this->dir_entry.name, strlen(this->dir_entry.name)));
|
||
|
|
AMS_ASSERT(real_child != nullptr);
|
||
|
|
child_dirs[cur_child_dir_ind++] = real_child;
|
||
|
|
AMS_ASSERT(cur_child_dir_ind <= num_child_dirs);
|
||
|
|
} else /* if (this->dir_entry.type == FsDirEntryType_File) */ {
|
||
|
|
this->AddFile(parent, std::make_unique<BuildFileContext>(parent->path.get(), parent->path_len, this->dir_entry.name, strlen(this->dir_entry.name), this->dir_entry.file_size, 0, this->cur_source_type));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
AMS_ASSERT(num_child_dirs == cur_child_dir_ind);
|
||
|
|
for (s64 i = 0; i < num_child_dirs; i++) {
|
||
|
|
this->VisitDirectory(fs, child_dirs[i]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
void Builder::VisitDirectory(BuildDirectoryContext *parent, u32 parent_offset, const void *dir_table, size_t dir_table_size, const void *file_table, size_t file_table_size) {
|
||
|
|
const DirectoryEntry *parent_entry = GetDirectoryEntry(dir_table, parent_offset);
|
||
|
|
if (parent_entry->file != EmptyEntry) {
|
||
|
|
const FileEntry *cur_file = GetFileEntry(file_table, parent_entry->file);
|
||
|
|
while (true) {
|
||
|
|
this->AddFile(parent, std::make_unique<BuildFileContext>(parent->path.get(), parent->path_len, cur_file->name, cur_file->name_size, cur_file->size, cur_file->offset, this->cur_source_type));
|
||
|
|
if (cur_file->sibling == EmptyEntry) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
cur_file = GetFileEntry(file_table, cur_file->sibling);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (parent_entry->child != EmptyEntry) {
|
||
|
|
const DirectoryEntry *cur_child = GetDirectoryEntry(dir_table, parent_entry->child);
|
||
|
|
u32 cur_child_offset = parent_entry->child;
|
||
|
|
while (true) {
|
||
|
|
BuildDirectoryContext *real_child = nullptr;
|
||
|
|
this->AddDirectory(&real_child, parent, std::make_unique<BuildDirectoryContext>(parent->path.get(), parent->path_len, cur_child->name, cur_child->name_size));
|
||
|
|
AMS_ASSERT(real_child != nullptr);
|
||
|
|
|
||
|
|
this->VisitDirectory(real_child, cur_child_offset, dir_table, dir_table_size, file_table, file_table_size);
|
||
|
|
|
||
|
|
if (cur_child->sibling == EmptyEntry) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
cur_child_offset = cur_child->sibling;
|
||
|
|
cur_child = GetDirectoryEntry(dir_table, cur_child_offset);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
void Builder::AddSdFiles() {
|
||
|
|
/* Open Sd Card filesystem. */
|
||
|
|
FsFileSystem sd_filesystem;
|
||
|
|
R_ASSERT(fsOpenSdCardFileSystem(&sd_filesystem));
|
||
|
|
ON_SCOPE_EXIT { fsFsClose(&sd_filesystem); };
|
||
|
|
|
||
|
|
this->cur_source_type = DataSourceType::LooseSdFile;
|
||
|
|
this->VisitDirectory(&sd_filesystem, this->root);
|
||
|
|
}
|
||
|
|
|
||
|
|
void Builder::AddStorageFiles(ams::fs::IStorage *storage, DataSourceType source_type) {
|
||
|
|
Header header;
|
||
|
|
R_ASSERT(storage->Read(0, &header, sizeof(Header)));
|
||
|
|
AMS_ASSERT(header.header_size == sizeof(Header));
|
||
|
|
|
||
|
|
/* Read tables. */
|
||
|
|
auto tables = std::unique_ptr<u8[]>(new u8[header.dir_table_size + header.file_table_size]);
|
||
|
|
void *dir_table = tables.get();
|
||
|
|
void *file_table = tables.get() + header.dir_table_size;
|
||
|
|
R_ASSERT(storage->Read(header.dir_table_ofs, dir_table, size_t(header.dir_table_size)));
|
||
|
|
R_ASSERT(storage->Read(header.file_table_ofs, file_table, size_t(header.file_table_size)));
|
||
|
|
|
||
|
|
this->cur_source_type = source_type;
|
||
|
|
this->VisitDirectory(this->root, 0x0, dir_table, size_t(header.dir_table_size), file_table, size_t(header.file_table_size));
|
||
|
|
}
|
||
|
|
|
||
|
|
void Builder::Build(std::vector<SourceInfo> *out_infos) {
|
||
|
|
/* Clear output. */
|
||
|
|
out_infos->clear();
|
||
|
|
|
||
|
|
/* Open an SD card filesystem. */
|
||
|
|
FsFileSystem sd_filesystem;
|
||
|
|
R_ASSERT(fsOpenSdCardFileSystem(&sd_filesystem));
|
||
|
|
ON_SCOPE_EXIT { fsFsClose(&sd_filesystem); };
|
||
|
|
|
||
|
|
/* Calculate hash table sizes. */
|
||
|
|
const size_t num_dir_hash_table_entries = GetHashTableSize(this->num_dirs);
|
||
|
|
const size_t num_file_hash_table_entries = GetHashTableSize(this->num_files);
|
||
|
|
this->dir_hash_table_size = sizeof(u32) * num_dir_hash_table_entries;
|
||
|
|
this->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));
|
||
|
|
|
||
|
|
const size_t metadata_size = this->dir_hash_table_size + this->dir_table_size + this->file_hash_table_size + this->file_table_size;
|
||
|
|
std::unique_ptr<u8[]> metadata(new u8[metadata_size]);
|
||
|
|
u32 *dir_hash_table = reinterpret_cast<u32 *>(metadata.get());
|
||
|
|
DirectoryEntry *dir_table = reinterpret_cast<DirectoryEntry *>(reinterpret_cast<uintptr_t>(dir_hash_table) + this->dir_hash_table_size);
|
||
|
|
u32 *file_hash_table = reinterpret_cast<u32 *>(reinterpret_cast<uintptr_t>(dir_table) + this->dir_table_size);
|
||
|
|
FileEntry *file_table = reinterpret_cast<FileEntry *>(reinterpret_cast<uintptr_t>(file_hash_table) + this->file_hash_table_size);
|
||
|
|
|
||
|
|
/* Clear hash tables. */
|
||
|
|
static_assert(EmptyEntry == 0xFFFFFFFF);
|
||
|
|
std::memset(dir_hash_table, 0xFF, this->dir_hash_table_size);
|
||
|
|
std::memset(file_hash_table, 0xFF, this->file_hash_table_size);
|
||
|
|
|
||
|
|
/* 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 : this->files) {
|
||
|
|
cur_file = it.second.get();
|
||
|
|
|
||
|
|
/* By default, pad to 0x10 alignment. */
|
||
|
|
this->file_partition_size = util::AlignUp(this->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 = this->file_partition_size - prev_file->offset + prev_file->orig_offset;
|
||
|
|
if (expected != cur_file->orig_offset) {
|
||
|
|
AMS_ASSERT(expected <= cur_file->orig_offset);
|
||
|
|
this->file_partition_size += cur_file->orig_offset - expected;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Calculate offsets. */
|
||
|
|
cur_file->offset = this->file_partition_size;
|
||
|
|
this->file_partition_size += cur_file->size;
|
||
|
|
cur_file->entry_offset = entry_offset;
|
||
|
|
entry_offset += sizeof(FileEntry) + util::AlignUp(cur_file->path_len - cur_file->cur_path_ofs, 4);
|
||
|
|
|
||
|
|
/* Save current file as prev for next iteration. */
|
||
|
|
prev_file = cur_file;
|
||
|
|
}
|
||
|
|
/* Assign deferred parent/sibling ownership. */
|
||
|
|
for (auto it = this->files.rbegin(); it != this->files.rend(); it++) {
|
||
|
|
cur_file = it->second.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 : this->directories) {
|
||
|
|
cur_dir = it.second.get();
|
||
|
|
cur_dir->entry_offset = entry_offset;
|
||
|
|
entry_offset += sizeof(DirectoryEntry) + util::AlignUp(cur_dir->path_len - cur_dir->cur_path_ofs, 4);
|
||
|
|
}
|
||
|
|
/* Assign deferred parent/sibling ownership. */
|
||
|
|
for (auto it = this->directories.rbegin(); it != this->directories.rend(); it++) {
|
||
|
|
cur_dir = it->second.get();
|
||
|
|
if (cur_dir == this->root) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
cur_dir->sibling = cur_dir->parent->child;
|
||
|
|
cur_dir->parent->child = cur_dir;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Populate file tables. */
|
||
|
|
for (const auto &it : this->files) {
|
||
|
|
BuildFileContext *cur_file = it.second.get();
|
||
|
|
FileEntry *cur_entry = GetFileEntry(file_table, cur_file->entry_offset);
|
||
|
|
|
||
|
|
/* 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 - cur_file->cur_path_ofs;
|
||
|
|
const size_t hash_ind = CalculatePathHash(cur_entry->parent, cur_file->path.get() + cur_file->cur_path_ofs, 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::memset(cur_entry->name + util::AlignDown(name_size, 4), 0, 4);
|
||
|
|
std::memcpy(cur_entry->name, cur_file->path.get() + cur_file->cur_path_ofs, name_size);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* 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:
|
||
|
|
{
|
||
|
|
out_infos->emplace_back(cur_file->offset + FilePartitionOffset, cur_file->size, cur_file->source_type, cur_file->path.release());
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
AMS_UNREACHABLE_DEFAULT_CASE();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Populate directory tables. */
|
||
|
|
for (const auto &it : this->directories) {
|
||
|
|
BuildDirectoryContext *cur_dir = it.second.get();
|
||
|
|
DirectoryEntry *cur_entry = GetDirectoryEntry(dir_table, cur_dir->entry_offset);
|
||
|
|
|
||
|
|
/* Set entry fields. */
|
||
|
|
cur_entry->parent = cur_dir == this->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 - cur_dir->cur_path_ofs;
|
||
|
|
const size_t hash_ind = CalculatePathHash(cur_entry->parent, cur_dir->path.get() + cur_dir->cur_path_ofs, 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::memset(cur_entry->name + util::AlignDown(name_size, 4), 0, 4);
|
||
|
|
std::memcpy(cur_entry->name, cur_dir->path.get() + cur_dir->cur_path_ofs, name_size);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Delete maps. */
|
||
|
|
this->root = nullptr;
|
||
|
|
this->directories.clear();
|
||
|
|
this->files.clear();
|
||
|
|
|
||
|
|
/* Set header fields. */
|
||
|
|
header->header_size = sizeof(*header);
|
||
|
|
header->file_hash_table_size = this->file_hash_table_size;
|
||
|
|
header->file_table_size = this->file_table_size;
|
||
|
|
header->dir_hash_table_size = this->dir_hash_table_size;
|
||
|
|
header->dir_table_size = this->dir_table_size;
|
||
|
|
header->file_partition_ofs = FilePartitionOffset;
|
||
|
|
header->dir_hash_table_ofs = util::AlignUp(FilePartitionOffset + this->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. */
|
||
|
|
{
|
||
|
|
FsFile metadata_file;
|
||
|
|
R_ASSERT(mitm::fs::SaveAtmosphereSdFile(&metadata_file, this->program_id, "romfs_metadata.bin", metadata.get(), metadata_size));
|
||
|
|
out_infos->emplace_back(header->dir_hash_table_ofs, metadata_size, DataSourceType::Metadata, new RemoteFile(metadata_file));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|