dao/ChangeFileOwner/ChangeFileOwner.cs

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

namespace ChangeFileOwner
{
    class ChangeFileOwner
    {
        static void Main(string[] args)
        {
            if (args.Length != 1)
            {
                Console.WriteLine("Usage: changefileowner.exe <filename>");
                Environment.Exit(1);
            }
            string filename = args[0];

            if ( !File.Exists(filename) )
            {
                Console.WriteLine("File not found: " + filename);
                Environment.Exit(2);
            }

            FileSecurity acl = File.GetAccessControl(filename);
            IdentityReference owner = acl.GetOwner(typeof(NTAccount));
            Console.WriteLine(owner); // SID

            //step 2 
            NTAccount ntAccount = new NTAccount("DAO", "Administrator");
            acl.SetOwner(ntAccount);

            FileSystemAccessRule facls = new FileSystemAccessRule(owner, FileSystemRights.Read, AccessControlType.Allow);
            acl.RemoveAccessRuleAll(facls);
            

            try
            {
                File.SetAccessControl(filename, acl);
            }
            catch (InvalidOperationException ex)
            {
                Console.WriteLine("You cannot assign ownership to that user." +
                "Either you don't have TakeOwnership permissions, or it is not your user account."
                );
                throw;
            }
        }
    }
}
1	using System;
2	using System.Collections.Generic;
3	using System.Linq;
4	using System.Text;
5	using System.IO;
6	using System.Security.AccessControl;
7	using System.Security.Principal;
8
9	namespace ChangeFileOwner
10	{
11	class ChangeFileOwner
12	{
13	static void Main(string[] args)
14	{
15	if (args.Length != 1)
16	{
17	Console.WriteLine("Usage: changefileowner.exe <filename>");
18	Environment.Exit(1);
19	}
20	string filename = args[0];
21
22	if ( !File.Exists(filename) )
23	{
24	Console.WriteLine("File not found: " + filename);
25	Environment.Exit(2);
26	}
27
28	FileSecurity acl = File.GetAccessControl(filename);
29	IdentityReference owner = acl.GetOwner(typeof(NTAccount));
30	Console.WriteLine(owner); // SID
31
32	//step 2
33	NTAccount ntAccount = new NTAccount("DAO", "Administrator");
34	acl.SetOwner(ntAccount);
35
36	FileSystemAccessRule facls = new FileSystemAccessRule(owner, FileSystemRights.Read, AccessControlType.Allow);
37	acl.RemoveAccessRuleAll(facls);
38
39
40	try
41	{
42	File.SetAccessControl(filename, acl);
43	}
44	catch (InvalidOperationException ex)
45	{
46	Console.WriteLine("You cannot assign ownership to that user." +
47	"Either you don't have TakeOwnership permissions, or it is not your user account."
48	);
49	throw;
50	}
51	}
52	}
53	}