Error with GetAccessControl()

  • Thread starter Thread starter Guest
  • Start date Start date
G

Guest

Hi,

I've written a very quick console app to recursive through a directory tree
and display directories that have explicit file permissions (code below). It
works, but GetAccessControl() fails on some folders (always the same) with
the error:

The binary form of an ACE object is invalid.
Parameter name: binaryForm

I've had a look at the folder properties, security tab for a couple of the
affected folders and everything seems to look ok.

Anyone have any ideas?

Thanks,
Ryan

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Security.Principal;
using System.Security.AccessControl;

namespace CheckACLs {
class Program {
static void Main(string[] args) {
DirectoryInfo di = new DirectoryInfo(@"c:\");
DisplayRights(di, 0);
Console.ReadKey();
}

static void DisplayRights(DirectoryInfo di, int recurseLevel) {
if (recurseLevel <= 2) {
recurseLevel++;
foreach (DirectoryInfo d in di.GetDirectories()) {
DisplayRights(d, recurseLevel);
}
}

bool firstRun = true;

DirectorySecurity ds = di.GetAccessControl();
foreach (FileSystemAccessRule fsa in ds.GetAccessRules(true,
false, typeof(NTAccount))) {
if (firstRun) {
Console.WriteLine(di.FullName);
firstRun = false;
}

Console.WriteLine("\t" + fsa.IdentityReference.ToString() +
" " +
fsa.FileSystemRights.ToString() + " " +
fsa.AccessControlType.ToString());
}
}
}
}
 
Hi Ryan,

Yes, this is a know issue in .net framework 2.0. You can check the
following link for more information:

http://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?Feedbac
kID=97797

As far as I know, a hotfix for this issue is available now. The product
group fixed this by relaxing the constraints of the ACEs. You can contact
Microsoft PSS for this hotfix. Here are their contact information.

http://support.microsoft.com/common/international.aspx?rdpath=gp;en-us;offer
prophone

If anything is unclear, please feel free to let me know.

Kevin Yu
Microsoft Online Community Support

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