deconstructed_rom_directory: Implement istorage loading for RomFS.

This commit is contained in:
bunnei 2018-01-20 18:20:46 -05:00
parent d64b7d7dfd
commit d9a91d7678
2 changed files with 71 additions and 2 deletions

View File

@ -7,14 +7,44 @@
#include "common/file_util.h"
#include "common/logging/log.h"
#include "common/string_util.h"
#include "core/file_sys/romfs_factory.h"
#include "core/hle/kernel/process.h"
#include "core/hle/kernel/resource_limit.h"
#include "core/hle/service/filesystem/filesystem.h"
#include "core/loader/deconstructed_rom_directory.h"
#include "core/loader/nso.h"
#include "core/memory.h"
namespace Loader {
static std::string FindRomFS(const std::string& directory) {
std::string filepath_romfs;
const auto callback = [&filepath_romfs](unsigned*, const std::string& directory,
const std::string& virtual_name) -> bool {
const std::string physical_name = directory + virtual_name;
if (FileUtil::IsDirectory(physical_name)) {
// Skip directories
return true;
}
// Verify extension
const std::string extension = physical_name.substr(physical_name.find_last_of(".") + 1);
if (Common::ToLower(extension) != "istorage") {
return true;
}
// Found it - we are done
filepath_romfs = std::move(physical_name);
return false;
};
// Search the specified directory recursively, looking for the first .istorage file, which will
// be used for the RomFS
FileUtil::ForeachDirectoryEntry(nullptr, directory, callback);
return filepath_romfs;
}
AppLoader_DeconstructedRomDirectory::AppLoader_DeconstructedRomDirectory(FileUtil::IOFile&& file,
std::string filepath)
: AppLoader(std::move(file)), filepath(std::move(filepath)) {}
@ -79,10 +109,10 @@ ResultStatus AppLoader_DeconstructedRomDirectory::Load(
// Load NSO modules
VAddr next_load_addr{Memory::PROCESS_IMAGE_VADDR};
const std::string directory = filepath.substr(0, filepath.find_last_of("/\\")) + DIR_SEP;
for (const auto& module : {"rtld", "main", "subsdk0", "subsdk1", "subsdk2", "subsdk3",
"subsdk4", "subsdk5", "subsdk6", "subsdk7", "sdk"}) {
const std::string path =
filepath.substr(0, filepath.find_last_of("/\\")) + DIR_SEP + module;
const std::string path = directory + DIR_SEP + module;
const VAddr load_addr = next_load_addr;
next_load_addr = AppLoader_NSO::LoadModule(path, load_addr);
if (next_load_addr) {
@ -98,8 +128,43 @@ ResultStatus AppLoader_DeconstructedRomDirectory::Load(
Kernel::ResourceLimit::GetForCategory(Kernel::ResourceLimitCategory::APPLICATION);
process->Run(Memory::PROCESS_IMAGE_VADDR, 48, Kernel::DEFAULT_STACK_SIZE);
// Find the RomFS by searching for a ".istorage" file in this directory
filepath_romfs = FindRomFS(directory);
// Register the RomFS if a ".istorage" file was found
if (!filepath_romfs.empty()) {
Service::FileSystem::RegisterFileSystem(std::make_unique<FileSys::RomFS_Factory>(*this),
Service::FileSystem::Type::RomFS);
}
is_loaded = true;
return ResultStatus::Success;
}
ResultStatus AppLoader_DeconstructedRomDirectory::ReadRomFS(
std::shared_ptr<FileUtil::IOFile>& romfs_file, u64& offset, u64& size) {
if (filepath_romfs.empty()) {
LOG_DEBUG(Loader, "No RomFS available");
return ResultStatus::ErrorNotUsed;
}
// We reopen the file, to allow its position to be independent
romfs_file = std::make_shared<FileUtil::IOFile>(filepath_romfs, "rb");
if (!romfs_file->IsOpen()) {
return ResultStatus::Error;
}
offset = 0;
size = romfs_file->GetSize();
LOG_DEBUG(Loader, "RomFS offset: 0x%08X", offset);
LOG_DEBUG(Loader, "RomFS size: 0x%08X", size);
// Reset read pointer
file.Seek(0, SEEK_SET);
return ResultStatus::Success;
}
} // namespace Loader

View File

@ -35,7 +35,11 @@ public:
ResultStatus Load(Kernel::SharedPtr<Kernel::Process>& process) override;
ResultStatus ReadRomFS(std::shared_ptr<FileUtil::IOFile>& romfs_file, u64& offset,
u64& size) override;
private:
std::string filepath_romfs;
std::string filepath;
};