Changeset 1883

Timestamp:

3/6/2010 8:29:48 AM (2 years ago)

Author:

lowjoel

Message:

Potential fix for the "Insufficient disk space" error when deleting files securely. My hypothesis is that invalidly-named files cause the file system to allocate file entries differently (we rename the same file with a name of the same length to eliminate reallocation of MFT entries) so this patch will fix that, ensuring filenames are always valid.

File:

• branches/eraser6/6.0/Eraser.Manager/FileSystem.cs (modified) (1 diff)

branches/eraser6/6.0/Eraser.Manager/FileSystem.cs

@@ -66 +66 @@
                     "ABCDEFGHIJKLMNOPQRSTUVWXYZ _+=-()[]{}',`~!";
                 for (int j = 0, k = resultAry.Length; j < k; ++j)
+                {
                     resultAry[j] = (byte)validFileNameChars[
                         (int)resultAry[j] % validFileNameChars.Length];
+
+                    if (j == 0 || j == k - 1)
+                        //The first or last character cannot be whitespace
+                        while (Char.IsWhiteSpace((char)resultAry[j]))
+                            resultAry[j] = (byte)validFileNameChars[
+                                (int)resultAry[j] % validFileNameChars.Length];
+                }
 
                 result = Encoding.UTF8.GetString(resultAry);