Method savOpenShared

3ds/source/script/scripthost.cpp:140–164

        }

        int savOpenShared(uint64_t id) override
        {
            // The id's low 32 bits are the extdata id, its high 32 the archive
            // magic (0x00048000 for the Home Menu shared extdata that holds
            // Play Coins).
            const int slot = freeSlot();
            if (slot < 0) {
                return -2;
            }

            FS_Archive archive;
            const u32 path[3] = {MEDIATYPE_NAND, (u32)id, (u32)(id >> 32)};
            Result res        = FSUSER_OpenArchive(&archive, ARCHIVE_SHARED_EXTDATA, {PATH_BINARY, 0xC, path});
            if (R_FAILED(res)) {
                return (int)res;
            }

            // Shared extdata is a file-level archive like ordinary extdata: it needs
            // no commit and no secure-value fix, so savCommit is a no-op on this
            // handle.
            mSlots[slot].arch       = ArchiveHandle::fromFs(archive);
            mSlots[slot].commitable = false;
            mSlots[slot].uniqueId   = 0;
            return slot;
        }

        bool savValid(int handle) override { return handle >= 0 && handle < MAX_SAV_HANDLES && mSlots[handle].arch; }