[vbox-dev] Building/using VirtualBox modules on Tails

[Austin English]

On Tue, Jan 19, 2016 at 7:17 PM, Alexey Eromenko <al4321 at gmail.com> wrote:
> Hard to answer, because I don't know how Tails works.

https://tails.boum.org/

> Just see what makes VirtualBox tick in standard Linux (by manually compiling
> and installing vbox), and see how Tails is any different from standard
> Linux. (at which stage things break apart)

I've tried as much as I can think of (checking /etc/init.d, syslog,
dmesg, lsmod, etc.).

> In general, you need only one primary kernel module:
> -vboxdrv
> (other modules are optional)

Ok.

> +one primary service:
> -VBoxSVC

the vboxsvc and other modules are loaded. /dev/vboxdrv
exists, and looking in /lib/modules shows the virtualbox modules are
under the running kernel

> And they all need to match in version with GUI.

Yes, I've got matching versions, but Virtualbox doesn't consider them usable.

How does Virtualbox try to load the modules / check the version
numbers? Is there some vbox logging I can enable to debug this?

I suspect a bad file permission, missing file, or something along
those lines, but I need to know what makes vbox fail..

> On Wed, Jan 20, 2016 at 3:03 AM, Austin English <austinenglish at gmail.com>
> wrote:
>>
>> On Wed, Dec 16, 2015 at 1:38 AM, Austin English <austinenglish at gmail.com>
>> wrote:
>> > Hi there,
>> >
>> > I've tried to use the community support but gotten no useful replies,
>> > and this is more of a developer level question anyway..
>> >
>> > I'm trying to fix this issue in Tails:
>> > https://labs.riseup.net/code/issues/5606
>> >
>> > I've gotten the modules to build and install, and when I boot up the
>> > modified Tails, the vboxsvc and other modules are loaded. /dev/vboxdrv
>> > exists, and looking in /lib/modules shows the virtualbox modules are
>> > under the running kernel. Making a new vm and trying to start it,
>> > however, fails, saying that the modules aren't loaded (possible
>> > version mismatch). I don't get any extra logging on stdout/stderr to
>> > tell me what is missing / what it's looking for.
>> >
>> > What logs/options could I use to debug what's going on? Is there any
>> > documentation I missed for this?
>> >
>> > Thanks,
>> > -Austin
>>
>> Ping.
>>
>> --
>> -Austin
>>
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>> vbox-dev at virtualbox.org
>> https://www.virtualbox.org/mailman/listinfo/vbox-dev
>
>
>
>
> --
> -Alexey Eromenko "Technologov"



-- 
-Austin