Re: [Qemu-devel] Keyboard contents in QEMU log

[Justin King]

On Apr 20, 2008, at 1:50 AM, Blue Swirl wrote:

> On 4/20/08, Justin King <address@hidden> wrote:
> > I am effectively looking to use QEMU as a
> > keylogger, that is, I would like to type keystrokes into a QEMU VM,  
> > and have
> > the keys recorded and output in some sort of log.
>
> At this point, the keystroke is not yet read by the CPU, so the
> interrupt log won't contain the keystroke.

Thank you for your help.  I was beginning to suspect that keystrokes  
were not appearing, and this confirms my suspicion.

> > Does the logging functionality of QEMU record keystrokes?  If so,  
> > where
> > should I be looking in the logs to find this information?
>
> No, but you can enable DEBUG_KBD in pckbd.c and recompile. The
> keystroke (among other keyboard events) will be printed to stdout.

I have basically done this, though for my particular purposes I need  
these events in the interrupt log.  I added a (simple) hack to hw/ 
pckbd.c that outputs key events to the interrupt log (when DEBUG_KB is  
enabled). It is probably inappropriate to add a patch to the source  
that meets only my needs, but if there is someone in the future that  
needs such a patch, I am willing to make it available.