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  1. using System;
  2. using System.IO;
  3. using System.Collections.Generic;
  4. using System.Linq;
  5. using System.Text;
  6.  
  7. namespace ConsoleApplication1
  8. {
  9.     public class DiskIsNotEnoughFreeSpace : IOException
  10.     {
  11.         public DiskIsNotEnoughFreeSpace(string msg)
  12.             : base(msg)
  13.         {
  14.  
  15.         }
  16.     }
  17.  
  18.     public class FileStreamEx : FileStream
  19.     {
  20.  
  21.  
  22.         public FileStreamEx(string path, FileMode mode, FileAccess access) : base(path, mode,access)
  23.         {
  24.  
  25.         }
  26.  
  27.         public override void WriteByte(byte value)
  28.         {
  29.             // ドライブ名取得
  30.             DriveInfo driveinfo = new DriveInfo(Path.GetPathRoot(this.Name));
  31.  
  32.             if (driveinfo.AvailableFreeSpace < 1)
  33.                 throw new DiskIsNotEnoughFreeSpace("HDDに空きがありません");
  34.  
  35.             base.WriteByte(value);
  36.         }
  37.     }
  38.  
  39.     class Program
  40.     {
  41.         static void Main(string[] args)
  42.         {
  43.             FileStreamEx fs = new FileStreamEx(@"R:\test.byte", FileMode.Append, FileAccess.Write);
  44.  
  45.             while (true)
  46.             {
  47.  
  48.                 fs.WriteByte(64);
  49.             }
  50.  
  51.         }
  52.     }
  53. }
  54.  
Runtime error #stdin #stdout #stderr 0.03s 26840KB
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Standard input is empty
stdout
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Standard output is empty
stderr
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Unhandled Exception:
System.UnauthorizedAccessException: Access to the path "/home/QR9mMb/R:\test.byte" is denied.
  at System.IO.FileStream..ctor (System.String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, Boolean anonymous, FileOptions options) [0x00000] in <filename unknown>:0 
  at System.IO.FileStream..ctor (System.String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, Boolean isAsync, Boolean anonymous) [0x00000] in <filename unknown>:0 
  at System.IO.FileStream..ctor (System.String path, FileMode mode, FileAccess access) [0x00000] in <filename unknown>:0 
  at ConsoleApplication1.FileStreamEx..ctor (System.String path, FileMode mode, FileAccess access) [0x00000] in <filename unknown>:0 
  at (wrapper remoting-invoke-with-check) ConsoleApplication1.FileStreamEx:.ctor (string,System.IO.FileMode,System.IO.FileAccess)
  at ConsoleApplication1.Program.Main (System.String[] args) [0x00000] in <filename unknown>:0 
[ERROR] FATAL UNHANDLED EXCEPTION: System.UnauthorizedAccessException: Access to the path "/home/QR9mMb/R:\test.byte" is denied.
  at System.IO.FileStream..ctor (System.String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, Boolean anonymous, FileOptions options) [0x00000] in <filename unknown>:0 
  at System.IO.FileStream..ctor (System.String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, Boolean isAsync, Boolean anonymous) [0x00000] in <filename unknown>:0 
  at System.IO.FileStream..ctor (System.String path, FileMode mode, FileAccess access) [0x00000] in <filename unknown>:0 
  at ConsoleApplication1.FileStreamEx..ctor (System.String path, FileMode mode, FileAccess access) [0x00000] in <filename unknown>:0 
  at (wrapper remoting-invoke-with-check) ConsoleApplication1.FileStreamEx:.ctor (string,System.IO.FileMode,System.IO.FileAccess)
  at ConsoleApplication1.Program.Main (System.String[] args) [0x00000] in <filename unknown>:0
https://ideone.com/TmtHdI
language:
C# (gmcs 5.20.1)
created:
10 years ago
visibility:
public

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