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patch_manager: Add LayeredFS mods support

This commit is contained in:
Zach Hilman 2018-09-19 22:02:44 -04:00
parent 44fdac334c
commit 16188acb50
2 changed files with 44 additions and 1 deletions

View File

@ -11,6 +11,7 @@
#include "core/file_sys/patch_manager.h"
#include "core/file_sys/registered_cache.h"
#include "core/file_sys/romfs.h"
#include "core/file_sys/vfs_layered.h"
#include "core/hle/service/filesystem/filesystem.h"
#include "core/loader/loader.h"
@ -31,8 +32,9 @@ std::string FormatTitleVersion(u32 version, TitleVersionFormat format) {
return fmt::format("v{}.{}.{}", bytes[3], bytes[2], bytes[1]);
}
constexpr std::array<const char*, 1> PATCH_TYPE_NAMES{
constexpr std::array<const char*, 2> PATCH_TYPE_NAMES{
"Update",
"LayeredFS",
};
std::string FormatPatchTypeName(PatchType type) {
@ -89,6 +91,41 @@ VirtualFile PatchManager::PatchRomFS(VirtualFile romfs, u64 ivfc_offset,
}
}
// LayeredFS
const auto load_dir = Service::FileSystem::GetModificationLoadRoot(title_id);
if (type == ContentRecordType::Program && load_dir != nullptr && load_dir->GetSize() > 0) {
const auto extracted = ExtractRomFS(romfs);
if (extracted != nullptr) {
auto patch_dirs = load_dir->GetSubdirectories();
std::sort(patch_dirs.begin(), patch_dirs.end(),
[](const VirtualDir& l, const VirtualDir& r) {
return l->GetName() < r->GetName();
});
std::vector<VirtualDir> layers;
layers.reserve(patch_dirs.size() + 1);
for (const auto& subdir : patch_dirs) {
const auto romfs_dir = subdir->GetSubdirectory("romfs");
if (romfs_dir != nullptr)
layers.push_back(romfs_dir);
}
layers.push_back(extracted);
const auto layered = LayerDirectories(layers);
if (layered != nullptr) {
const auto packed = CreateRomFS(layered);
if (packed != nullptr) {
LOG_INFO(Loader, " RomFS: LayeredFS patches applied successfully");
romfs = packed;
}
}
}
}
return romfs;
}
@ -114,6 +151,10 @@ std::map<PatchType, std::string> PatchManager::GetPatchVersionNames() const {
}
}
const auto lfs_dir = Service::FileSystem::GetModificationLoadRoot(title_id);
if (lfs_dir != nullptr && lfs_dir->GetSize() > 0)
out[PatchType::LayeredFS] = "";
return out;
}

View File

@ -26,6 +26,7 @@ std::string FormatTitleVersion(u32 version,
enum class PatchType {
Update,
LayeredFS,
};
std::string FormatPatchTypeName(PatchType type);
@ -42,6 +43,7 @@ public:
// Currently tracked RomFS patches:
// - Game Updates
// - LayeredFS
VirtualFile PatchRomFS(VirtualFile base, u64 ivfc_offset,
ContentRecordType type = ContentRecordType::Program) const;