How to convert IntPtr to SafeHandle?

Question

I have C# Windows service class:

class MyService : ServiceBase
{
    private void InitializeComponent() {
       //some other code ...
       SafeHandle sHandle = this.ServiceHandle; // I want to do this but this fails.
       SetServiceObjectSecurity(sHandle, secInfo, binaryDescriptor);
       //some more code ...
    }
}

How to convert an IntPtr (like this.ServiceHandle) to a "System.Runtime.InteropServices.SafeHandle"? so that I can use that in the function call "SetServiceObjectSecurity()"? My ultimate aim is to give admin permission to the Service.

Answer 1

Have you tried using SafeHandle.SetHandle(IntPtr handle) as explained here https://msdn.microsoft.com/de-de/library/system.runtime.interopservices.safehandle.sethandle(v=vs.110).aspx and see if that works for you?

EDIT: Since SafeHandle.SetHandle(IntPtr handle) is a protected method, you could create a derived class like this:

public class SafeHandleExtended : SafeHandle
{
    public void SetHandleExtended(IntPtr handle)
    {
        this.SetHandle(handle);
    }

    // .. SafeHandle's abstract methods etc. that you need to implement
}

Although I have not tested this for correctness, so I do not know if this works the way you want it to.