1 files changed, 58 insertions, 0 deletions

diff --git a/src/core/file_sys/fssystem/fs_i_storage.h b/src/core/file_sys/fssystem/fs_i_storage.h
new file mode 100644
index 000000000..416dd57b8
--- /dev/null
+++ b/src/core/file_sys/fssystem/fs_i_storage.h
@@ -0,0 +1,58 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "common/overflow.h"
+#include "core/file_sys/errors.h"
+#include "core/file_sys/vfs.h"
+
+namespace FileSys {
+
+class IStorage : public VfsFile {
+public:
+    virtual std::string GetName() const override {
+        return {};
+    }
+
+    virtual VirtualDir GetContainingDirectory() const override {
+        return {};
+    }
+
+    virtual bool IsWritable() const override {
+        return true;
+    }
+
+    virtual bool IsReadable() const override {
+        return true;
+    }
+
+    virtual bool Resize(size_t size) override {
+        return false;
+    }
+
+    virtual bool Rename(std::string_view name) override {
+        return false;
+    }
+
+    static inline Result CheckAccessRange(s64 offset, s64 size, s64 total_size) {
+        R_UNLESS(offset >= 0, ResultInvalidOffset);
+        R_UNLESS(size >= 0, ResultInvalidSize);
+        R_UNLESS(Common::WrappingAdd(offset, size) >= offset, ResultOutOfRange);
+        R_UNLESS(offset + size <= total_size, ResultOutOfRange);
+        R_SUCCEED();
+    }
+};
+
+class IReadOnlyStorage : public IStorage {
+public:
+    virtual bool IsWritable() const override {
+        return false;
+    }
+
+    virtual size_t Write(const u8* buffer, size_t size, size_t offset) override {
+        return 0;
+    }
+};
+
+} // namespace FileSys