C#.net核心 – 在磁盘上获取文件大小 – 跨平台解决方案

有没有一种方法可以使用通用逻辑来检索磁盘上的文件大小,而不管底层操作系统如何？以下代码适用于Windows,但显然不适用于Linux.

 public static long GetFileSizeOnDisk(string file)
    {
        FileInfo info = new FileInfo(file);
        uint dummy,sectorsPerCluster,bytesPerSector;
        int result = GetDiskFreeSpaceW(info.Directory.Root.FullName,out sectorsPerCluster,out bytesPerSector,out dummy,out dummy);
        if (result == 0) throw new Win32Exception();
        uint clusterSize = sectorsPerCluster * bytesPerSector;
        uint hosize;
        uint losize = GetCompressedFileSizeW(file,out hosize);
        long size;
        size = (long)hosize << 32 | losize;
        return ((size + clusterSize - 1) / clusterSize) * clusterSize;
    }

    [DllImport("kernel32.dll")]
    static extern uint GetCompressedFileSizeW([In,MarshalAs(UnmanagedType.LPWStr)] string lpFileName,[Out,MarshalAs(UnmanagedType.U4)] out uint lpFileSizeHigh);

    [DllImport("kernel32.dll",SetLastError = true,PreserveSig = true)]
    static extern int GetDiskFreeSpaceW([In,MarshalAs(UnmanagedType.LPWStr)] string lpRootPathName,out uint lpSectorsPerCluster,out uint lpBytesPerSector,out uint lpNumberOfFreeClusters,out uint lpTotalNumberOfClusters);

或者,我正在寻找一种适用于Linux的类似实现.谁能指出我正确的方向？

谢谢你的帮助 ！