[vbox-dev] VirtualBox Load HGCM Host Service

Anirudh Bagde anidev.aelico at gmail.com
Thu Jun 17 17:07:05 PDT 2010


I managed to build from scratch VirtualBox OSE. It wasn't building before
because some dev packages needed to be installed. I modified
ConsoleImpl2.cpp to load my library and rebuilt VBoxC.so. However, in the
log file, I get:

00:00:00.834 supR3HardenedLdrLoadIt: Verification of
"/usr/src/virtualbox-ose-3.2.0-src/out/linux.x86/release/bin/VBoxBetterSeamless.so"
failed, rc=VERR_NOT_FOUND

I looked in the source files and I saw that my file apparently wasn't in a
verification table (g_aSupInstallFiles) in file SUPR3HardenedVerify.cpp.
Must my build of VBox OSE not be hardened before I can do this, or should I
modify SUPR3HardenedVerify.cpp to include my library?


On Tue, Jun 15, 2010 at 5:43 PM, Anirudh Bagde <anidev.aelico at gmail.com>wrote:

> Thanks for your information. Does this mean I have to modify and rebuild
> part of VirtualBox OSE?
>
> I didn't actually build it myself. I used aptitude to download and install
> the package virtualbox-ose. So what should I do from here?
>
> Thanks again.
>
>
> On Tue, Jun 15, 2010 at 3:11 AM, Andreas - Sun Microsystems <
> pentagonik at sun.com> wrote:
>
>> Hi,
>>
>> you need to have Main load your service; take a look into
>> src/VBox/Main/ConsoleImpl2.cpp, around
>>
>> .
>> .
>> .
>> #ifdef VBOX_WITH_GUEST_PROPS
>>    /*
>>     * Guest property service
>>     */
>>
>>    rc = configGuestProperties(pConsole);
>> #endif /* VBOX_WITH_GUEST_PROPS defined */
>> .
>> .
>>
>>
>> or
>>
>> .
>> .
>> .
>> Console::configGuestProperties(void *pvConsole)
>> .
>> .
>> .
>>
>> That's how we load the service for handling the guest properties.
>>
>> Hope this helps,
>> -Andreas.
>>
>>
>>
>>
>>  My host is Ubuntu Lucid with VirtualBox OSE and my guest is Windows XP
>>> SP3 with VirtualBox (not ose).
>>>
>>> I want to create a set of programs that will make the VirtualBox
>>> seamless mode work better. To do this, I had to learn how to use the
>>> HGCM. I wrote a small test program for the guest side using C++ and
>>> building it with Visual Studio C++ 2010 Express on Windows. It used
>>> DeviceIoControl to connect and disconnect to the VBoxSharedClipboard
>>> service. It seemed to work, i.e. info.result == VINF_SUCCESS. However,
>>> info.u32ClientID == 0.
>>>
>>> I then decided to write the host service. I compiled a very small
>>> library VBoxBetterSeamless.so that would just notify me if the
>>> VBoxHGCMSvcLoad method was getting called. I verified that the method
>>> was properly exported using readelf. I then put it in
>>> /usr/lib/virtualbox/. VirtualBox OSE doesn't seem to call
>>> VBoxHGCMSvcLoad when the XP VM starts, and I really don't know how to
>>> make the service automatically load every time the VM starts. Google has
>>> not been much help.
>>>
>>> What do I need to do to cause my service to load when the XP VM starts?
>>>
>>> Thanks in advance.
>>>
>>>
>>>
>>> _______________________________________________
>>> vbox-dev mailing list
>>> vbox-dev at virtualbox.org
>>> http://vbox.innotek.de/mailman/listinfo/vbox-dev
>>>
>>
>>
>> _______________________________________________
>> vbox-dev mailing list
>> vbox-dev at virtualbox.org
>> http://vbox.innotek.de/mailman/listinfo/vbox-dev
>>
>
>
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