Filesystem/Archives: Implemented the SaveData archive

The savedata for each game is stored in /savedata/<ProgramID> for NCCH files. ELF files and 3DSX files use the folder 0 because they have no ID information

Got rid of the code duplication in File and Directory

Files that deal with the host machine's file system now live in DiskFile, similarly for directories and DiskDirectory and archives with DiskArchive.

FS_U: Use the correct error code when a file wasn't found

1 files changed, 4 insertions, 0 deletions

diff --git a/src/core/loader/ncch.cpp b/src/core/loader/ncch.cpp
index ba9ba00c0..4d23656ec 100644
--- a/src/core/loader/ncch.cpp
+++ b/src/core/loader/ncch.cpp
@@ -315,4 +315,8 @@ ResultStatus AppLoader_NCCH::ReadRomFS(std::vector<u8>& buffer) const {
     return ResultStatus::Error;
 }
 
+u64 AppLoader_NCCH::GetProgramId() const {
+    return *reinterpret_cast<u64 const*>(&ncch_header.program_id[0]);
+}
+
 } // namespace Loader