Create code in solidity that uploads data files, then create smart contract for the files

pragma solidity ^0.4.17;

contract Ownable {
  address public owner;

  function Ownable() public {
    owner = msg.sender;
  }

  modifier onlyOwner() {
    require(msg.sender == owner);
    _;
  }

  function transferOwnership(address newOwner) onlyOwner public {
    owner = newOwner;
  }
}

contract FileUpload is Ownable {

    string public fileName;
    string public fileData;
    //string public fileSize;


    function FileUpload(string _fileName, string _fileData) public {
        fileName = _fileName;
        fileData = _fileData;
        //fileSize = _fileSize;
    }

    function changeFileName(string _fileName) public {
        fileName = _fileName;
    }

    function changeFileData(string _fileData) public {
        fileData = _fileData;
    }
    
    function changeFileSize(string _fileSize) public {
        fileSize