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FS: Stream RomFS from file instead of loading all of it to memory

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condut 2015-07-10 00:55:23 +03:00 • committed by Yuri Kunde Schlesner
parent ecdfd0643a
commit c385b7767d
9 changed files with 48 additions and 33 deletions
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2
src/core/loader/loader.cpp
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@ -124,7 +124,7 @@ ResultStatus LoadFile(const std::string& filename) {
case FileType::CXI:
case FileType::CCI:
{
AppLoader_NCCH app_loader(std::move(file));
AppLoader_NCCH app_loader(std::move(file), filename);
// Load application and RomFS
if (ResultStatus::Success == app_loader.Load()) {

7
src/core/loader/loader.h
View file

@ -99,10 +99,13 @@ public:
/**
* Get the RomFS of the application
* @param buffer Reference to buffer to store data
* Since the RomFS can be huge, we return a file reference instead of copying to a buffer
* @param romfs_file The file containing the RomFS
* @param offset The offset the romfs begins on
* @param size The size of the romfs
* @return ResultStatus result of function
*/
virtual ResultStatus ReadRomFS(std::vector<u8>& buffer) const {
virtual ResultStatus ReadRomFS(std::shared_ptr<FileUtil::IOFile>& romfs_file, u64& offset, u64& size) const {
return ResultStatus::ErrorNotImplemented;
}

15
src/core/loader/ncch.cpp
View file

@ -299,7 +299,7 @@ ResultStatus AppLoader_NCCH::ReadLogo(std::vector<u8>& buffer) const {
return LoadSectionExeFS("logo", buffer);
}
ResultStatus AppLoader_NCCH::ReadRomFS(std::vector<u8>& buffer) const {
ResultStatus AppLoader_NCCH::ReadRomFS(std::shared_ptr<FileUtil::IOFile>& romfs_file, u64& offset, u64& size) const {
if (!file->IsOpen())
return ResultStatus::Error;
@ -311,12 +311,17 @@ ResultStatus AppLoader_NCCH::ReadRomFS(std::vector<u8>& buffer) const {
LOG_DEBUG(Loader, "RomFS offset: 0x%08X", romfs_offset);
LOG_DEBUG(Loader, "RomFS size: 0x%08X", romfs_size);
buffer.resize(romfs_size);
file->Seek(romfs_offset, SEEK_SET);
if (file->ReadBytes(&buffer[0], romfs_size) != romfs_size)
if (file->GetSize () < romfs_offset + romfs_size)
return ResultStatus::Error;
// We reopen the file, to allow its position to be independent from file's
romfs_file = std::make_shared<FileUtil::IOFile>(filepath, "rb");
if (!romfs_file->IsOpen())
return ResultStatus::Error;
offset = romfs_offset;
size = romfs_size;
return ResultStatus::Success;
}
LOG_DEBUG(Loader, "NCCH has no RomFS");

7
src/core/loader/ncch.h
View file

@ -163,7 +163,8 @@ namespace Loader {
/// Loads an NCCH file (e.g. from a CCI, or the first NCCH in a CXI)
class AppLoader_NCCH final : public AppLoader {
public:
AppLoader_NCCH(std::unique_ptr<FileUtil::IOFile>&& file) : AppLoader(std::move(file)) { }
AppLoader_NCCH(std::unique_ptr<FileUtil::IOFile>&& file, const std::string& filepath)
: AppLoader(std::move(file)), filepath(filepath) { }
/**
* Returns the type of the file
@ -211,7 +212,7 @@ public:
* @param buffer Reference to buffer to store data
* @return ResultStatus result of function
*/
ResultStatus ReadRomFS(std::vector<u8>& buffer) const override;
ResultStatus ReadRomFS(std::shared_ptr<FileUtil::IOFile>& romfs_file, u64& offset, u64& size) const override;
private:
@ -244,6 +245,8 @@ private:
NCCH_Header ncch_header;
ExeFs_Header exefs_header;
ExHeader_Header exheader_header;
std::string filepath;
};
} // namespace Loader