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https://github.com/Atmosphere-NX/Atmosphere.git
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fs_mitm: Fix mismatched new[] / delete (#389)
* fs.mitm: Fix mismatched new[] / delete Using delete instead of delete[] on a pointer given by new[] is undefined behaviour. For memory sources, malloc/free are used because cleaning up is tricky when data can be either allocated with new (RomfsHeader) or new[] (metadata). * set.mitm: Fix mismatched new[] / delete
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parent
66560d0a7b
commit
b6d3df3335
3 changed files with 16 additions and 15 deletions
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@ -49,7 +49,7 @@ void RomFSBuildContext::VisitDirectory(FsFileSystem *filesys, RomFSBuildDirector
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strcat(child->path + parent->path_len, this->dir_entry.name);
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if (!this->AddDirectory(parent, child, NULL)) {
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delete child->path;
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delete[] child->path;
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delete child;
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} else {
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child_dirs.push_back(child);
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@ -72,7 +72,7 @@ void RomFSBuildContext::VisitDirectory(FsFileSystem *filesys, RomFSBuildDirector
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child->size = this->dir_entry.fileSize;
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if (!this->AddFile(parent, child)) {
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delete child->path;
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delete[] child->path;
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delete child;
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}
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} else {
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@ -125,7 +125,7 @@ void RomFSBuildContext::VisitDirectory(RomFSBuildDirectoryContext *parent, u32 p
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child->source = this->cur_source_type;
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child->orig_offset = cur_file->offset;
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if (!this->AddFile(parent, child)) {
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delete child->path;
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delete[] child->path;
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delete child;
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}
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if (cur_file->sibling == ROMFS_ENTRY_EMPTY) {
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@ -153,7 +153,7 @@ void RomFSBuildContext::VisitDirectory(RomFSBuildDirectoryContext *parent, u32 p
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RomFSBuildDirectoryContext *real = NULL;
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if (!this->AddDirectory(parent, child, &real)) {
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delete child->path;
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delete[] child->path;
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delete child;
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}
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if (real == NULL) {
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@ -246,8 +246,10 @@ void RomFSBuildContext::Build(std::vector<RomFSSourceInfo> *out_infos) {
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this->file_hash_table_size = 4 * file_hash_table_entry_count;
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/* Assign metadata pointers */
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RomFSHeader *header = new RomFSHeader({0});
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u8 *metadata = new u8[this->dir_hash_table_size + this->dir_table_size + this->file_hash_table_size + this->file_table_size];
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auto *header = reinterpret_cast<RomFSHeader*>(std::malloc(sizeof(RomFSHeader)));
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*header = {};
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const size_t metadata_size = this->dir_hash_table_size + this->dir_table_size + this->file_hash_table_size + this->file_table_size;
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u8 *metadata = reinterpret_cast<u8*>(std::malloc(metadata_size));
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u32 *dir_hash_table = (u32 *)((uintptr_t)metadata);
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RomFSDirectoryEntry *dir_table = (RomFSDirectoryEntry *)((uintptr_t)dir_hash_table + this->dir_hash_table_size);
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u32 *file_hash_table = (u32 *)((uintptr_t)dir_table + this->dir_table_size);
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@ -372,7 +374,7 @@ void RomFSBuildContext::Build(std::vector<RomFSSourceInfo> *out_infos) {
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/* Delete directories. */
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for (const auto &it : this->directories) {
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cur_dir = it.second;
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delete cur_dir->path;
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delete[] cur_dir->path;
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delete cur_dir;
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}
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this->root = NULL;
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@ -381,7 +383,7 @@ void RomFSBuildContext::Build(std::vector<RomFSSourceInfo> *out_infos) {
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/* Delete files. */
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for (const auto &it : this->files) {
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cur_file = it.second;
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delete cur_file->path;
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delete[] cur_file->path;
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delete cur_file;
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}
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this->files.clear();
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@ -397,13 +399,11 @@ void RomFSBuildContext::Build(std::vector<RomFSSourceInfo> *out_infos) {
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header->dir_table_ofs = header->dir_hash_table_ofs + header->dir_hash_table_size;
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header->file_hash_table_ofs = header->dir_table_ofs + header->dir_table_size;
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header->file_table_ofs = header->file_hash_table_ofs + header->file_hash_table_size;
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const size_t metadata_size = this->dir_hash_table_size + this->dir_table_size + this->file_hash_table_size + this->file_table_size;
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/* Try to save metadata to the SD card, to save on memory space. */
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if (R_SUCCEEDED(Utils::SaveSdFileForAtmosphere(this->title_id, ROMFS_METADATA_FILE_PATH, metadata, metadata_size))) {
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out_infos->emplace_back(header->dir_hash_table_ofs, metadata_size, RomFSDataSource::MetaData);
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delete metadata;
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std::free(metadata);
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} else {
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out_infos->emplace_back(header->dir_hash_table_ofs, metadata_size, metadata, RomFSDataSource::Memory);
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}
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@ -15,6 +15,7 @@
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*/
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#pragma once
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#include <cstdlib>
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#include <switch.h>
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#include <map>
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@ -120,10 +121,10 @@ struct RomFSSourceInfo {
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case RomFSDataSource::MetaData:
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break;
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case RomFSDataSource::LooseFile:
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delete this->loose_source_info.path;
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delete[] this->loose_source_info.path;
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break;
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case RomFSDataSource::Memory:
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delete this->memory_source_info.data;
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std::free((void*)this->memory_source_info.data);
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break;
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default:
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fatalSimple(0xF601);
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@ -257,7 +257,7 @@ void SettingsItemManager::LoadConfiguration() {
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char *config_buf = new char[0x10000];
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std::memset(config_buf, 0, 0x10000);
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ON_SCOPE_EXIT {
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delete config_buf;
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delete[] config_buf;
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};
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/* Read from file. */
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