[libvirt] [PATCH] C# Bindings - rename classes fromvirConnectto Connect, virDomain to Domain, etc...

arnaud.champion at devatom.fr arnaud.champion at devatom.fr
Sat Oct 23 13:38:58 UTC 2010 

Okay well, the problem occurs under amd64 system only. The problem is 
around the marshal of the virConnectCredential structure.
I have marshalled it as this:

///<summary>
    /// Credential structure
    ///</summary>
    [StructLayout(LayoutKind.Sequential)]
    public struct virConnectCredential
    {
        ///<summary>
        /// One of virConnectCredentialType constants
        ///</summary>
        [MarshalAs(UnmanagedType.I4)]
        public virConnectCredentialType type;
        ///<summary>
        /// Prompt to show to user
        ///</summary>
        private IntPtr prompt;
        ///<summary>
        /// Additional challenge to show
        ///</summary>
        private IntPtr challenge;
        ///<summary>
        /// Optional default result
        ///</summary>
        private IntPtr defresult;
        ///<summary>
        /// Result to be filled with user response (or defresult). An IntPtr 
to a marshalled allocated string
        ///</summary>
        private IntPtr result;
        ///<summary>
        /// Length of the result
        ///</summary>
        [MarshalAs(UnmanagedType.U4)]
        public uint resultlen;
        ///<summary>
        /// Prompt to show to user
        ///</summary>
        public string Prompt
        {
            get
            {
                return Marshal.PtrToStringAnsi(prompt);
            }
        }
        ///<summary>
        /// Additional challenge to show
        ///</summary>
        public string Challenge
        {
            get
            {
                return Marshal.PtrToStringAnsi(challenge);
            }
        }
        ///<summary>
        /// Optional default result
        ///</summary>
        public string Defresult
        {
            get
            {
                return Marshal.PtrToStringAnsi(defresult);
            }
        }
        ///<summary>
        /// Result to be filled with user response (or defresult).
        ///</summary>
        public string Result
        {
            get
            {
                return Marshal.PtrToStringAnsi(result);
            }
            set
            {
                result = 
NativeFunctions.StrDup(Marshal.StringToHGlobalAnsi(value));
            }
        }
    }

The strange thing is that I have made test with this marshaling, it always 
work with on x86 (fedora or ubuntu) and failed marshaling on amd64 (ubuntu 
or fedora)

Anyone have an idea ?

Regards,

Arnaud
--------------------------------------------------
From: "Matthias Bolte" <matthias.bolte at googlemail.com>
Sent: Thursday, October 21, 2010 3:59 PM
To: <arnaud.champion at devatom.fr>
Cc: <libvir-list at redhat.com>
Subject: Re: [libvirt] [PATCH] C# Bindings - rename classes fromvirConnectto 
Connect, virDomain to Domain, etc...

> I think I have Mono AMD64 here as I'm running the AMD64 version of Ubuntu 
> 10.04.
>
> Matthias
>
> 2010/10/21  <arnaud.champion at devatom.fr>:
>> Another question, are you using a x86 or a amd64 version of mono ?
>>
>> --------------------------------------------------
>> From: <arnaud.champion at devatom.fr>
>> Sent: Thursday, October 21, 2010 3:07 PM
>> To: <arnaud.champion at devatom.fr>; "Matthias Bolte"
>> <matthias.bolte at googlemail.com>
>> Cc: <libvir-list at redhat.com>
>> Subject: Re: [libvirt] [PATCH] C# Bindings - rename classes 
>> fromvirConnectto
>> Connect, virDomain to Domain, etc...
>>
>>> Solved, I have compiled with --disable-nls and I have reproduced the
>>> problem, but I have a lot of difficulties to find the solution, for 
>>> now...
>>> but I continue to search.
>>>
>>> --------------------------------------------------
>>> From: <arnaud.champion at devatom.fr>
>>> Sent: Thursday, October 21, 2010 10:57 AM
>>> To: <arnaud.champion at devatom.fr>; "Matthias Bolte"
>>> <matthias.bolte at googlemail.com>
>>> Cc: <libvir-list at redhat.com>
>>> Subject: Re: [libvirt] [PATCH] C# Bindings - rename classes
>>> fromvirConnectto Connect, virDomain to Domain, etc...
>>>
>>>> I have a compile problem under ubuntu 10.04.
>>>>
>>>> I have used the git libvirt version. autogen run fine (I haven't used 
>>>> any
>>>> argument, so I try to compile all). But make give me this :
>>>>
>>>> make[3]: Leaving directory `/home/arnaud/Bureau/libvirt/libvirt/tests'
>>>> make[2]: Leaving directory `/home/arnaud/Bureau/libvirt/libvirt/tests'
>>>> Making all in po
>>>> make[2]: Entering directory `/home/arnaud/Bureau/libvirt/libvirt/po'
>>>> test -z "af.gmo am.gmo ar.gmo as.gmo be.gmo bg.gmo bn.gmo bn_IN.gmo
>>>> bs.gmo ca.gmo cs.gmo cy.gmo da.gmo de.gmo el.gmo en_GB.gmo es.gmo 
>>>> et.gmo
>>>> eu_ES.gmo fa.gmo fi.gmo fr.gmo gl.gmo gu.gmo he.gmo hi.gmo hr.gmo 
>>>> hu.gmo
>>>> hy.gmo id.gmo is.gmo it.gmo ja.gmo ka.gmo kn.gmo ko.gmo ku.gmo lo.gmo 
>>>> lt.gmo
>>>> lv.gmo mk.gmo ml.gmo mr.gmo ms.gmo my.gmo nb.gmo nl.gmo nn.gmo nso.gmo
>>>> or.gmo pa.gmo pl.gmo pt.gmo pt_BR.gmo ro.gmo ru.gmo si.gmo sk.gmo 
>>>> sl.gmo
>>>> sq.gmo sr.gmo sr at latin.gmo sv.gmo ta.gmo te.gmo th.gmo tr.gmo uk.gmo 
>>>> ur.gmo
>>>> vi.gmo zh_CN.gmo zh_TW.gmo zu.gmo" || make af.gmo am.gmo ar.gmo as.gmo
>>>> be.gmo bg.gmo bn.gmo bn_IN.gmo bs.gmo ca.gmo cs.gmo cy.gmo da.gmo 
>>>> de.gmo
>>>> el.gmo en_GB.gmo es.gmo et.gmo eu_ES.gmo fa.gmo fi.gmo fr.gmo gl.gmo 
>>>> gu.gmo
>>>> he.gmo hi.gmo hr.gmo hu.gmo hy.gmo id.gmo is.gmo it.gmo ja.gmo ka.gmo 
>>>> kn.gmo
>>>> ko.gmo ku.gmo lo.gmo lt.gmo lv.gmo mk.gmo ml.gmo mr.gmo ms.gmo my.gmo 
>>>> nb.gmo
>>>> nl.gmo nn.gmo nso.gmo or.gmo pa.gmo pl.gmo pt.gmo pt_BR.gmo ro.gmo 
>>>> ru.gmo
>>>> si.gmo sk.gmo sl.gmo sq.gmo sr.gmo sr at latin.gmo sv.gmo ta.gmo te.gmo 
>>>> th.gmo
>>>> tr.gmo uk.gmo ur.gmo vi.gmo zh_CN.gmo zh_TW.gmo zu.gmo
>>>> make[3]: Entering directory `/home/arnaud/Bureau/libvirt/libvirt/po'
>>>> : --update af.po libvirt.pot
>>>> rm -f af.gmo && : -c --statistics -o af.gmo af.po
>>>> mv: cannot stat `t-af.gmo': No such file or directory
>>>> make[3]: *** [af.gmo] Error 1
>>>> make[3]: Leaving directory `/home/arnaud/Bureau/libvirt/libvirt/po'
>>>> make[2]: *** [stamp-po] Error 2
>>>> make[2]: Leaving directory `/home/arnaud/Bureau/libvirt/libvirt/po'
>>>> make[1]: *** [all-recursive] Error 1
>>>> make[1]: Leaving directory `/home/arnaud/Bureau/libvirt/libvirt'
>>>> make: *** [all] Erreur 2
>>>>
>>>> Maybe I have to remove certains things via --without at configure, but 
>>>> I
>>>> don't know what.
>>>>
>>>> Arnaud
>>>>
>>>> --------------------------------------------------
>>>> From: <arnaud.champion at devatom.fr>
>>>> Sent: Thursday, October 21, 2010 10:28 AM
>>>> To: "Matthias Bolte" <matthias.bolte at googlemail.com>
>>>> Cc: <libvir-list at redhat.com>
>>>> Subject: Re: [libvirt] [PATCH] C# Bindings - rename classes
>>>> fromvirConnectto Connect, virDomain to Domain, etc...
>>>>
>>>>> argh, esx support is not compiled by default in ubuntu. I have to take
>>>>> the time to compile libvirt.
>>>>>
>>>>> --------------------------------------------------
>>>>> From: "Matthias Bolte" <matthias.bolte at googlemail.com>
>>>>> Sent: Wednesday, October 20, 2010 11:23 PM
>>>>> To: <arnaud.champion at devatom.fr>
>>>>> Cc: <libvir-list at redhat.com>
>>>>> Subject: Re: [libvirt] [PATCH] C# Bindings - rename classes from
>>>>> virConnectto Connect, virDomain to Domain, etc...
>>>>>
>>>>>> I'm testing on Ubuntu 10.04 with
>>>>>>
>>>>>> mono 2.4.4~svn151842-1ubuntu4
>>>>>> monodevelop 2.2.1+dfsg-1ubuntu2
>>>>>>
>>>>>> and libvirt and libvirt-csharp from git.
>>>>>>
>>>>>> Matthias
>>>>>>
>>>>>> 2010/10/20  <arnaud.champion at devatom.fr>:
>>>>>>>
>>>>>>> It seems that the marshaling of the virConnectCredential structure
>>>>>>> failed,
>>>>>>> but I only said that by view your debug traces. Can you say me which
>>>>>>> are the
>>>>>>> environment of Mono (which version of Mono, which MonoDevelop, these
>>>>>>> kind of
>>>>>>> things) ? because I have no idea about what's going wrong, I have to
>>>>>>> reproduce the case on my system to debug correctly.
>>>>>>>
>>>>>>> Arnaud
>>>>>>>
>>>>>>> --------------------------------------------------
>>>>>>> From: <arnaud.champion at devatom.fr>
>>>>>>> Sent: Wednesday, October 20, 2010 9:07 PM
>>>>>>> To: "Matthias Bolte" <matthias.bolte at googlemail.com>
>>>>>>> Cc: <libvir-list at redhat.com>
>>>>>>> Subject: Re: [libvirt] [PATCH] C# Bindings - rename classes from
>>>>>>> virConnectto Connect, virDomain to Domain, etc...
>>>>>>>
>>>>>>>> It's strange it works on my linux :S
>>>>>>>>
>>>>>>>> --------------------------------------------------
>>>>>>>> From: "Matthias Bolte" <matthias.bolte at googlemail.com>
>>>>>>>> Sent: Wednesday, October 20, 2010 8:02 PM
>>>>>>>> To: <arnaud.champion at devatom.fr>
>>>>>>>> Cc: <libvir-list at redhat.com>
>>>>>>>> Subject: Re: [libvirt] [PATCH] C# Bindings - rename classes from
>>>>>>>> virConnect to Connect, virDomain to Domain, etc...
>>>>>>>>
>>>>>>>>> The transport shouldn't make a difference. To make it work with
>>>>>>>>> HTTPS
>>>>>>>>> you'll have to replace the self-signed certificates on the ESX
>>>>>>>>> server
>>>>>>>>> or tell libvirt to disable server certificate checks using:
>>>>>>>>>
>>>>>>>>>  esx://192.168.0.17/?no_verify=1
>>>>>>>>>
>>>>>>>>> Matthias
>>>>>>>>>
>>>>>>>>> 2010/10/20  <arnaud.champion at devatom.fr>:
>>>>>>>>>>
>>>>>>>>>> Okay I'll take a look, is the transport in http ? (just to be
>>>>>>>>>> curious, I
>>>>>>>>>> haven't been able to make it work in https)
>>>>>>>>>>
>>>>>>>>>> --------------------------------------------------
>>>>>>>>>> From: "Matthias Bolte" <matthias.bolte at googlemail.com>
>>>>>>>>>> Sent: Wednesday, October 20, 2010 6:35 PM
>>>>>>>>>> To: <arnaud.champion at devatom.fr>
>>>>>>>>>> Cc: <libvir-list at redhat.com>
>>>>>>>>>> Subject: Re: [libvirt] [PATCH] C# Bindings - rename classes from
>>>>>>>>>> virConnect
>>>>>>>>>> to Connect, virDomain to Domain, etc...
>>>>>>>>>>
>>>>>>>>>>> 2010/10/20  <arnaud.champion at devatom.fr>:
>>>>>>>>>>>>
>>>>>>>>>>>> This patch rename file / classes from virConnect to Connect,
>>>>>>>>>>>> virDomain
>>>>>>>>>>>> to
>>>>>>>>>>>> Domain, etc...
>>>>>>>>>>>>
>>>>>>>>>>>> Arnaud
>>>>>>>>>>>
>>>>>>>>>>> I pushed this one too and did a patch remove trailing white 
>>>>>>>>>>> spaces
>>>>>>>>>>> on
>>>>>>>>>>> top.
>>>>>>>>>>>
>>>>>>>>>>> I tested the bindings by successfully compiling and using the
>>>>>>>>>>> virConnectOpen example on Linux in MonoDevelop.
>>>>>>>>>>>
>>>>>>>>>>> The virConnectOpenAuth example throws a
>>>>>>>>>>> System.NullReferenceException
>>>>>>>>>>> when I try to connect to an ESX server.
>>>>>>>>>>>
>>>>>>>>>>> Marshaling clicked signal
>>>>>>>>>>> Exception in Gtk# callback delegate
>>>>>>>>>>>  Note: Applications can use
>>>>>>>>>>> GLib.ExceptionManager.UnhandledException
>>>>>>>>>>> to handle the exception.
>>>>>>>>>>> System.Reflection.TargetInvocationException: Exception has been
>>>>>>>>>>> thrown
>>>>>>>>>>> by the target of an invocation. --->
>>>>>>>>>>> System.NullReferenceException:
>>>>>>>>>>> Object reference not set to an instance of an object
>>>>>>>>>>>  at System.String.memcpy4 (System.Byte* dest, System.Byte* src,
>>>>>>>>>>> Int32
>>>>>>>>>>> size) [0x00000]
>>>>>>>>>>>  at System.String.memcpy (System.Byte* dest, System.Byte* src,
>>>>>>>>>>> Int32
>>>>>>>>>>> size) [0x00000]
>>>>>>>>>>>  at (wrapper unknown) 
>>>>>>>>>>> Libvirt.virConnectCredential:PtrToStructure
>>>>>>>>>>> (intptr,object)
>>>>>>>>>>>  at (wrapper managed-to-native)
>>>>>>>>>>> System.Runtime.InteropServices.Marshal:PtrToStructure
>>>>>>>>>>> (intptr,System.Type)
>>>>>>>>>>>  at MainWindow.AuthCallback (IntPtr creds, UInt32 ncred, IntPtr
>>>>>>>>>>> cbdata) [0x00034] in
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> .../libvirt-csharp-upstream/examples/MonoDevelop/virConnectOpenAuth/MainWindow.cs:146
>>>>>>>>>>>  at (wrapper native-to-managed) MainWindow:AuthCallback
>>>>>>>>>>> (intptr,uint,intptr)
>>>>>>>>>>>  at (wrapper managed-to-native) Libvirt.Connect:OpenAuth
>>>>>>>>>>> (string,Libvirt.virConnectAuth&,int)
>>>>>>>>>>>  at MainWindow.OnButton1Clicked (System.Object sender,
>>>>>>>>>>> System.EventArgs e) [0x00069] in
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> .../libvirt-csharp-upstream/examples/MonoDevelop/virConnectOpenAuth/MainWindow.cs:64
>>>>>>>>>>>  at (wrapper managed-to-native)
>>>>>>>>>>> System.Reflection.MonoMethod:InternalInvoke
>>>>>>>>>>> (object,object[],System.Exception&)
>>>>>>>>>>>  at System.Reflection.MonoMethod.Invoke (System.Object obj,
>>>>>>>>>>> BindingFlags invokeAttr, System.Reflection.Binder binder,
>>>>>>>>>>> System.Object[] parameters, System.Globalization.CultureInfo
>>>>>>>>>>> culture)
>>>>>>>>>>> [0x00000]
>>>>>>>>>>>  --- End of inner exception stack trace ---
>>>>>>>>>>>  at System.Reflection.MonoMethod.Invoke (System.Object obj,
>>>>>>>>>>> BindingFlags invokeAttr, System.Reflection.Binder binder,
>>>>>>>>>>> System.Object[] parameters, System.Globalization.CultureInfo
>>>>>>>>>>> culture)
>>>>>>>>>>> [0x00000]
>>>>>>>>>>>  at System.Reflection.MethodBase.Invoke (System.Object obj,
>>>>>>>>>>> System.Object[] parameters) [0x00000]
>>>>>>>>>>>  at System.Delegate.DynamicInvokeImpl (System.Object[] args)
>>>>>>>>>>> [0x00000]
>>>>>>>>>>>  at System.MulticastDelegate.DynamicInvokeImpl (System.Object[]
>>>>>>>>>>> args)
>>>>>>>>>>> [0x00000]
>>>>>>>>>>>  at System.Delegate.DynamicInvoke (System.Object[] args) 
>>>>>>>>>>> [0x00000]
>>>>>>>>>>>  at GLib.Signal.ClosureInvokedCB (System.Object o,
>>>>>>>>>>> GLib.ClosureInvokedArgs args) [0x00000]
>>>>>>>>>>>  at GLib.SignalClosure.Invoke (GLib.ClosureInvokedArgs args)
>>>>>>>>>>> [0x00000]
>>>>>>>>>>>  at GLib.SignalClosure.MarshalCallback (IntPtr raw_closure, 
>>>>>>>>>>> IntPtr
>>>>>>>>>>> return_val, UInt32 n_param_vals, IntPtr param_values, IntPtr
>>>>>>>>>>> invocation_hint, IntPtr marshal_data) [0x00000]
>>>>>>>>>>>  at 
>>>>>>>>>>> GLib.ExceptionManager.RaiseUnhandledException(System.Exception
>>>>>>>>>>> e, Boolean is_terminal)
>>>>>>>>>>>  at GLib.SignalClosure.MarshalCallback(IntPtr raw_closure, 
>>>>>>>>>>> IntPtr
>>>>>>>>>>> return_val, UInt32 n_param_vals, IntPtr param_values, IntPtr
>>>>>>>>>>> invocation_hint, IntPtr marshal_data)
>>>>>>>>>>>  at Gtk.Application.gtk_main()
>>>>>>>>>>>  at Gtk.Application.Run()
>>>>>>>>>>>  at virConnectOpenAuth.MainClass.Main(System.String[] args) in
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> .../libvirt-csharp-upstream/examples/MonoDevelop/virConnectOpenAuth/Main.cs:line
>>>>>>>>>>> 13
>>>>>>>>>>>
>>>>>>>>>>> Matthias
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>
>>>>>>>> --
>>>>>>>> libvir-list mailing list
>>>>>>>> libvir-list at redhat.com
>>>>>>>> https://www.redhat.com/mailman/listinfo/libvir-list
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>
>>>>>
>>>>> --
>>>>> libvir-list mailing list
>>>>> libvir-list at redhat.com
>>>>> https://www.redhat.com/mailman/listinfo/libvir-list
>>>>
>>>>
>>>
>>
>>
>

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