Implement FS_User::GetFreeBytes

src/core/file_sys/archive_backend.h

@@ -131,6 +131,12 @@ public:
      * @return Opened directory, or nullptr
      */
     virtual std::unique_ptr<DirectoryBackend> OpenDirectory(const Path& path) const = 0;
+
+    /**
+     * Get the free space
+     * @return The number of free bytes in the archive
+     */
+    virtual u64 GetFreeBytes() const = 0;
 };
 
 class ArchiveFactory : NonCopyable {

src/core/file_sys/disk_archive.cpp

@@ -74,6 +74,11 @@ std::unique_ptr<DirectoryBackend> DiskArchive::OpenDirectory(const Path& path) c
     return std::move(directory);
 }
 
+u64 DiskArchive::GetFreeBytes() const {
+    // TODO: Stubbed to return 1GiB
+    return 1024 * 1024 * 1024;
+}
+
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 
 DiskFile::DiskFile(const DiskArchive& archive, const Path& path, const Mode mode) {

src/core/file_sys/disk_archive.h

@@ -41,6 +41,7 @@ public:
     bool CreateDirectory(const Path& path) const override;
     bool RenameDirectory(const Path& src_path, const Path& dest_path) const override;
     std::unique_ptr<DirectoryBackend> OpenDirectory(const Path& path) const override;
+    u64 GetFreeBytes() const override;
 
 protected:
     friend class DiskFile;

src/core/file_sys/ivfc_archive.cpp

@@ -59,6 +59,11 @@ std::unique_ptr<DirectoryBackend> IVFCArchive::OpenDirectory(const Path& path) c
     return Common::make_unique<IVFCDirectory>();
 }
 
+u64 IVFCArchive::GetFreeBytes() const {
+    LOG_WARNING(Service_FS, "Attempted to get the free space in an IVFC archive");
+    return 0;
+}
+
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 
 size_t IVFCFile::Read(const u64 offset, const size_t length, u8* buffer) const {

src/core/file_sys/ivfc_archive.h

@@ -42,6 +42,7 @@ public:
     bool CreateDirectory(const Path& path) const override;
     bool RenameDirectory(const Path& src_path, const Path& dest_path) const override;
     std::unique_ptr<DirectoryBackend> OpenDirectory(const Path& path) const override;
+    u64 GetFreeBytes() const override;
 
 protected:
     std::shared_ptr<FileUtil::IOFile> romfs_file;