static void CreateOSOnDisk(DiskDriver disk) { // create the operating system on disk if not present disk.TurnOn(); // try to mount the disk, format if needed first FileSystem filesystem = new SimpleFS(); try { filesystem.Mount(disk, "/"); } catch (Exception) { filesystem.Format(disk); filesystem.Mount(disk, "/"); } Directory rootDir = filesystem.GetRootDirectory(); // password file for security subsystem if not present if (filesystem.Find("/passwd") == null) { rootDir.CreateFile("passwd"); } // user home directory and files if not present if (filesystem.Find("/home") == null) { rootDir.CreateDirectory("home"); } // root user if not present SecuritySystem security = new SimpleSecurity(filesystem, "passwd"); try { security.AddUser("root"); } catch (Exception) { } disk.TurnOff(); }
static void TestLogicalFileSystem() { try { DiskDriver disk = new VolatileDisk(1); //DiskDriver disk = new PersistentDisk(1, "disk1"); disk.TurnOn(); FileSystem fs = new SimpleFS(); fs.Format(disk); fs.Mount(disk, "/"); Directory root = fs.GetRootDirectory(); Directory dir1 = root.CreateDirectory("dir1"); Directory dir2 = root.CreateDirectory("dir2"); Random r = new Random(); byte[] bytes1 = CreateTestBytes(r, 1000); File file2 = dir2.CreateFile("file2"); FileStream stream1 = file2.Open(); stream1.Write(0, bytes1); stream1.Close(); File file2_2 = (File)fs.Find("/dir2/file2"); FileStream stream2 = file2_2.Open(); byte[] bytes2 = stream2.Read(0, 1000); stream2.Close(); if (!Compare(bytes1, bytes2)) { throw new Exception("bytes read were not the same as written"); } ValidateBadPath(fs, ""); ValidateBadPath(fs, "//"); ValidateBadPath(fs, "/dir2/nope"); ValidateBadPath(fs, "dir2"); ValidateBadPath(fs, "nope"); ValidateBadPath(fs, "/dir2/file2/nope"); ValidatePath(fs, "/"); ValidatePath(fs, "/dir2"); ValidatePath(fs, "/dir1/"); Console.WriteLine("Printing all directories..."); RecursivelyPrintDirectories(root); Console.WriteLine(); Console.WriteLine("Moving file2 to dir1..."); file2.Move(dir1); Console.WriteLine("Printing all directories..."); RecursivelyPrintDirectories(root); Console.WriteLine(); Console.WriteLine("Renaming dir2 to renamed..."); dir2.Rename("renamed"); Console.WriteLine("Printing all directories..."); RecursivelyPrintDirectories(root); Console.WriteLine(); Console.WriteLine("Deleting renamed..."); dir2.Delete(); Console.WriteLine("Printing all directories..."); RecursivelyPrintDirectories(root); Console.WriteLine(); Console.WriteLine("Deleting dir1..."); dir1.Delete(); Console.WriteLine("Printing all directories..."); RecursivelyPrintDirectories(root); Console.WriteLine(); fs.Unmount("/"); disk.TurnOff(); Console.WriteLine("Logical file system success!"); } catch (Exception ex) { Console.WriteLine("LFS test failed: " + ex.Message); Console.WriteLine(ex.StackTrace); } }