mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-09 21:51:45 +00:00
f2ee44da74
* fs.mitm: skeleton the use of special allocation in romfs build * pm: add api for ams.mitm to steal application memory * pm/mitm: okay, that api won't work, try a different one * romfs: revert memory usage increases; we'll handle torture games case-by-case. * pm/romfs: first (broken?) pass at dynamic heap. I cannot wait to figure out all the ways this is wrong. * Release the dynamic heap a little more eagerly * romfs: animal crossing is also not a nice game * romfs: fix issues in close-during-build * romfs: zelda is a blight upon this earth
379 lines
13 KiB
C++
379 lines
13 KiB
C++
/*
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* Copyright (c) Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <stratosphere.hpp>
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namespace ams::mitm::fs::romfs {
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enum class DataSourceType : u8 {
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Storage,
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File,
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LooseSdFile,
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Metadata,
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Memory,
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};
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enum AllocationType {
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AllocationType_FileName,
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AllocationType_DirName,
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AllocationType_FullPath,
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AllocationType_SourceInfo,
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AllocationType_BuildFileContext,
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AllocationType_BuildDirContext,
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AllocationType_TableCache,
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AllocationType_DirPointerArray,
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AllocationType_DirContextSet,
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AllocationType_FileContextSet,
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AllocationType_Memory,
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AllocationType_Count,
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};
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void *AllocateTracked(AllocationType type, size_t size);
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void FreeTracked(AllocationType type, void *p, size_t size);
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template<typename T, typename... Args>
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T *AllocateTyped(AllocationType type, Args &&... args) {
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void *mem = AllocateTracked(type, sizeof(T));
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return std::construct_at(static_cast<T *>(mem), std::forward<Args>(args)...);
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}
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template<AllocationType AllocType, typename T>
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class TrackedAllocator {
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public:
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using value_type = T;
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template<typename U>
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struct rebind {
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using other = TrackedAllocator<AllocType, U>;
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};
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public:
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TrackedAllocator() = default;
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T *allocate(size_t n) {
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return static_cast<T *>(AllocateTracked(AllocType, sizeof(T) * n));
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}
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void deallocate(T *p, size_t n) {
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FreeTracked(AllocType, p, sizeof(T) * n);
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}
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};
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struct SourceInfo {
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s64 virtual_offset;
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s64 size;
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union {
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struct {
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s64 offset;
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} storage_source_info;
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struct {
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s64 offset;
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} file_source_info;
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struct {
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char *path;
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} loose_source_info;
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struct {
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ams::fs::fsa::IFile *file;
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} metadata_source_info;
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struct {
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u8 *data;
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} memory_source_info;
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};
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DataSourceType source_type;
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bool cleaned_up;
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SourceInfo(s64 v_o, s64 sz, DataSourceType type, s64 p_o) : virtual_offset(v_o), size(sz), source_type(type), cleaned_up(false) {
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switch (this->source_type) {
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case DataSourceType::Storage:
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this->storage_source_info.offset = p_o;
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break;
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case DataSourceType::File:
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this->file_source_info.offset = p_o;
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break;
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AMS_UNREACHABLE_DEFAULT_CASE();
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}
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}
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SourceInfo(s64 v_o, s64 sz, DataSourceType type, void *arg) : virtual_offset(v_o), size(sz), source_type(type), cleaned_up(false) {
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switch (this->source_type) {
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case DataSourceType::LooseSdFile:
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this->loose_source_info.path = static_cast<char *>(arg);
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break;
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case DataSourceType::Metadata:
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this->metadata_source_info.file = static_cast<ams::fs::fsa::IFile *>(arg);
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break;
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case DataSourceType::Memory:
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this->memory_source_info.data = static_cast<u8 *>(arg);
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break;
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AMS_UNREACHABLE_DEFAULT_CASE();
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}
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}
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void Cleanup() {
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AMS_ABORT_UNLESS(!this->cleaned_up);
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this->cleaned_up = true;
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switch (this->source_type) {
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case DataSourceType::Storage:
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case DataSourceType::File:
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break;
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case DataSourceType::Metadata:
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delete this->metadata_source_info.file;
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break;
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case DataSourceType::LooseSdFile:
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FreeTracked(AllocationType_FullPath, this->loose_source_info.path, std::strlen(this->loose_source_info.path) + 1);
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break;
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case DataSourceType::Memory:
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FreeTracked(AllocationType_Memory, this->memory_source_info.data, this->size);
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break;
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AMS_UNREACHABLE_DEFAULT_CASE();
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}
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}
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};
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constexpr inline bool operator<(const SourceInfo &lhs, const SourceInfo &rhs) {
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return lhs.virtual_offset < rhs.virtual_offset;
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}
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constexpr inline bool operator<(const SourceInfo &lhs, const s64 rhs) {
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return lhs.virtual_offset <= rhs;
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}
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struct BuildFileContext;
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struct BuildDirectoryContext {
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NON_COPYABLE(BuildDirectoryContext);
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NON_MOVEABLE(BuildDirectoryContext);
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char *path;
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union {
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BuildDirectoryContext *parent;
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};
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union {
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BuildDirectoryContext *child;
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struct {
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u32 parent_offset;
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u32 child_offset;
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};
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};
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union {
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BuildDirectoryContext *sibling;
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u32 sibling_offset;
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};
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union {
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BuildFileContext *file;
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u32 file_offset;
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};
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u32 path_len;
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u32 entry_offset;
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u32 hash_value;
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struct RootTag{};
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BuildDirectoryContext(RootTag) : parent(nullptr), child(nullptr), sibling(nullptr), file(nullptr), path_len(0), entry_offset(0), hash_value(0xFFFFFFFF) {
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this->path = static_cast<char *>(AllocateTracked(AllocationType_DirName, 1));
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this->path[0] = '\x00';
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}
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BuildDirectoryContext(const char *entry_name, size_t entry_name_len) : parent(nullptr), child(nullptr), sibling(nullptr), file(nullptr), entry_offset(0) {
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this->path_len = entry_name_len;
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this->path = static_cast<char *>(AllocateTracked(AllocationType_DirName, this->path_len + 1));
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std::memcpy(this->path, entry_name, entry_name_len);
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this->path[this->path_len] = '\x00';
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}
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~BuildDirectoryContext() {
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if (this->path != nullptr) {
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FreeTracked(AllocationType_DirName, this->path, this->path_len + 1);
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this->path = nullptr;
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}
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}
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void operator delete(void *p) {
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FreeTracked(AllocationType_BuildDirContext, p, sizeof(BuildDirectoryContext));
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}
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size_t GetPathLength() const {
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if (this->parent == nullptr) {
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return 0;
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}
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return this->parent->GetPathLength() + 1 + this->path_len;
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}
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size_t GetPath(char *dst) const {
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if (this->parent == nullptr) {
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dst[0] = '\x00';
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return 0;
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}
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const size_t parent_len = this->parent->GetPath(dst);
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dst[parent_len] = '/';
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std::memcpy(dst + parent_len + 1, this->path, this->path_len);
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dst[parent_len + 1 + this->path_len] = '\x00';
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return parent_len + 1 + this->path_len;
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}
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bool HasHashMark() const {
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return reinterpret_cast<uintptr_t>(this->sibling) & UINT64_C(0x8000000000000000);
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}
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void SetHashMark() {
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this->sibling = reinterpret_cast<BuildDirectoryContext *>(reinterpret_cast<uintptr_t>(this->sibling) | UINT64_C(0x8000000000000000));
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}
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void ClearHashMark() {
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this->sibling = reinterpret_cast<BuildDirectoryContext *>(reinterpret_cast<uintptr_t>(this->sibling) & ~UINT64_C(0x8000000000000000));
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}
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};
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struct BuildFileContext {
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NON_COPYABLE(BuildFileContext);
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NON_MOVEABLE(BuildFileContext);
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char *path;
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BuildDirectoryContext *parent;
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union {
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BuildFileContext *sibling;
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u32 sibling_offset;
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};
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s64 offset;
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s64 size;
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s64 orig_offset;
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u32 path_len;
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u32 entry_offset;
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u32 hash_value;
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DataSourceType source_type;
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BuildFileContext(const char *entry_name, size_t entry_name_len, s64 sz, s64 o_o, DataSourceType type) : parent(nullptr), sibling(nullptr), offset(0), size(sz), orig_offset(o_o), entry_offset(0), hash_value(0xFFFFFFFF), source_type(type) {
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this->path_len = entry_name_len;
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this->path = static_cast<char *>(AllocateTracked(AllocationType_FileName, this->path_len + 1));
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std::memcpy(this->path, entry_name, entry_name_len);
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this->path[this->path_len] = 0;
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}
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~BuildFileContext() {
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if (this->path != nullptr) {
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FreeTracked(AllocationType_FileName, this->path, this->path_len + 1);
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this->path = nullptr;
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}
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}
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void operator delete(void *p) {
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FreeTracked(AllocationType_BuildFileContext, p, sizeof(BuildFileContext));
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}
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size_t GetPathLength() const {
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if (this->parent == nullptr) {
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return 0;
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}
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return this->parent->GetPathLength() + 1 + this->path_len;
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}
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size_t GetPath(char *dst) const {
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if (this->parent == nullptr) {
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dst[0] = '\x00';
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return 0;
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}
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const size_t parent_len = this->parent->GetPath(dst);
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dst[parent_len] = '/';
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std::memcpy(dst + parent_len + 1, this->path, this->path_len);
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dst[parent_len + 1 + this->path_len] = '\x00';
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return parent_len + 1 + this->path_len;
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}
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bool HasHashMark() const {
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return reinterpret_cast<uintptr_t>(this->sibling) & UINT64_C(0x8000000000000000);
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}
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void SetHashMark() {
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this->sibling = reinterpret_cast<BuildFileContext *>(reinterpret_cast<uintptr_t>(this->sibling) | UINT64_C(0x8000000000000000));
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}
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void ClearHashMark() {
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this->sibling = reinterpret_cast<BuildFileContext *>(reinterpret_cast<uintptr_t>(this->sibling) & ~UINT64_C(0x8000000000000000));
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}
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};
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class DirectoryTableReader;
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class FileTableReader;
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class Builder {
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NON_COPYABLE(Builder);
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NON_MOVEABLE(Builder);
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public:
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using SourceInfoVector = std::vector<SourceInfo, TrackedAllocator<AllocationType_SourceInfo, SourceInfo>>;
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private:
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template<typename T>
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struct Comparator {
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static constexpr inline int Compare(const char *a, const char *b) {
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unsigned char c1{}, c2{};
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while ((c1 = *a++) == (c2 = *b++)) {
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if (c1 == '\x00') {
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return 0;
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}
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}
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return (c1 - c2);
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}
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constexpr bool operator()(const std::unique_ptr<T> &lhs, const std::unique_ptr<T> &rhs) const {
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char lhs_path[ams::fs::EntryNameLengthMax + 1];
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char rhs_path[ams::fs::EntryNameLengthMax + 1];
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lhs->GetPath(lhs_path);
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rhs->GetPath(rhs_path);
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return Comparator::Compare(lhs_path, rhs_path) < 0;
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}
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};
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template<AllocationType AllocType, typename T>
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using ContextSet = std::set<std::unique_ptr<T>, Comparator<T>, TrackedAllocator<AllocType, std::unique_ptr<T>>>;
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private:
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ncm::ProgramId m_program_id;
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BuildDirectoryContext *m_root;
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ContextSet<AllocationType_DirContextSet, BuildDirectoryContext> m_directories;
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ContextSet<AllocationType_FileContextSet, BuildFileContext> m_files;
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size_t m_num_dirs;
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size_t m_num_files;
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size_t m_dir_table_size;
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size_t m_file_table_size;
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size_t m_dir_hash_table_size;
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size_t m_file_hash_table_size;
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size_t m_file_partition_size;
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::FsDirectoryEntry m_dir_entry;
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DataSourceType m_cur_source_type;
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private:
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void VisitDirectory(FsFileSystem *fs, BuildDirectoryContext *parent);
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void VisitDirectory(BuildDirectoryContext *parent, u32 parent_offset, DirectoryTableReader &dir_table, FileTableReader &file_table);
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void AddDirectory(BuildDirectoryContext **out, BuildDirectoryContext *parent_ctx, std::unique_ptr<BuildDirectoryContext> file_ctx);
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void AddFile(BuildDirectoryContext *parent_ctx, std::unique_ptr<BuildFileContext> file_ctx);
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public:
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Builder(ncm::ProgramId pr_id);
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~Builder();
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void AddSdFiles();
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void AddStorageFiles(ams::fs::IStorage *storage, DataSourceType source_type);
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void Build(SourceInfoVector *out_infos);
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};
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Result ConfigureDynamicHeap(u64 *out_size, ncm::ProgramId program_id, const cfg::OverrideStatus &status, bool is_application);
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}
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