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registered_cache: Implement PlaceholderCache to manage placeholder and installing content

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This commit is contained in:
Zach Hilman 2019-04-10 12:21:51 -04:00
parent 9cef1068c5
commit 24ae0aacbc
2 changed files with 175 additions and 0 deletions
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25
src/core/file_sys/registered_cache.h
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@ -25,6 +25,8 @@ enum class NCAContentType : u8;
enum class TitleType : u8;
struct ContentRecord;
struct MetaRecord;
class RegisteredCache;
using NcaID = std::array<u8, 0x10>;
using ContentProviderParsingFunction = std::function<VirtualFile(const VirtualFile&, const NcaID&)>;
@ -89,6 +91,27 @@ protected:
Core::Crypto::KeyManager keys;
};
class PlaceholderCache {
public:
explicit PlaceholderCache(VirtualDir dir);
bool Create(const NcaID& id, u64 size) const;
bool Delete(const NcaID& id) const;
bool Exists(const NcaID& id) const;
bool Write(const NcaID& id, u64 offset, const std::vector<u8>& data) const;
bool Register(RegisteredCache* cache, const NcaID& placeholder, const NcaID& install) const;
bool CleanAll() const;
std::optional<std::array<u8, 0x10>> GetRightsID(const NcaID& id) const;
u64 Size(const NcaID& id) const;
bool SetSize(const NcaID& id, u64 new_size) const;
std::vector<NcaID> List() const;
static NcaID Generate();
private:
VirtualDir dir;
};
/*
* A class that catalogues NCAs in the registered directory structure.
* Nintendo's registered format follows this structure:
@ -103,6 +126,8 @@ protected:
* when 4GB splitting can be ignored.)
*/
class RegisteredCache : public ContentProvider {
friend class PlaceholderCache;
public:
// Parsing function defines the conversion from raw file to NCA. If there are other steps
// besides creating the NCA from the file (e.g. NAX0 on SD Card), that should go in a custom