Dear Nic, Paolo,
My UML kernel is a 2.6.15.7 with the Blaisorblade's uml-2.6.15-bs3-tls.patch
applied. This uml-2.6.15-bs3-tls.patch seems to have already included the
mconsole exec support:
1. Trying to apply uml-mconsole on a uml-2.6.15-bs3-tls patched kernel lead
to a "Reversed (or previously applied) patch detected!" message.
2. Looking in detail for mconsole exec support in the kernel configuration,
it seems that it is already included:
# ./linux --showconfig | grep -i mconsole
CONFIG_MCONSOLE=y
CONFIG_MCONSOLE_EXEC=y
So it seems that the problem it wasn't the kernel support for mconsole exec
(due to it was compiled with CONFIG_MCONSOLE_EXEC=y)
However, playing a bit more with the exec mconsole command I found that:
(/root/.vnum) exec "echo 1 > /tmp/foo"
or
(/root/.vnum) exec 'echo 1 > /tmp/foo'
don't work but
(/root/.vnum) exec echo 1 > /tmp/foo
works! :)
So, finally, the problem was quoting the command (" or '). I think that, in
order to avoid this confusion,
http://www.user-mode-linux.org/~blaisorblade/faq.html could be improved
including some little example of utilization of mconsole exec command and
maybe warn about using quotes to enclose the command.
Thank again for your suggestions and support!
Best regards,
--------------------
Fermín Galán Márquez
CTTC - Centre Tecnològic de Telecomunicacions de Catalunya
Parc Mediterrani de la Tecnologia, Av. del Canal Olímpic s/n, 08860
Castelldefels, Spain
Room 1.02
Tel : +34 93 645 29 12
Fax : +34 93 645 29 01
Email address: [EMAIL PROTECTED]
-----Mensaje original-----
De: Blaisorblade [mailto:[EMAIL PROTECTED]
Enviado el: jueves, 05 de octubre de 2006 23:43
Para: user-mode-linux-user@lists.sourceforge.net
CC: Nic James Ferrier; Fermín Galán Márquez
Asunto: Re: [uml-user] uml_mconsole exec
On Thursday 05 October 2006 20:51, Nic James Ferrier wrote:
> =?iso-8859-1?Q?Ferm=EDn_Gal=E1n_M=E1rquez?= <[EMAIL PROTECTED]>
>
> writes:
> > but, in spite of the message, it seems not being working because the
> > file "foo" doesn't get created in the virtual machine filesystem.
> >
> > Googling for "uml_mconsole exec", I found the following at
> > http://www.user-mode-linux.org/~blaisorblade/faq.html:
> >
> > "What's Mconsole exec? It adds the "exec" command to uml_mconsole;
> > it allows you to start an arbitrary command through mconsole. It
> > will be passed to /bin/sh -c, so you have all the shell power at
> > hand. It must be enabled when compiling the kernel (because you
> > might not want to allow this to the host admin)."
>
> You have to patch your kernel with one of blaisor's patches:
>
>
>http://www.user-mode-linux.org/~blaisorblade/patches/guest/uml-VERSION-
>XX/b
>roken-out/uml-mconsole_exec
>
> After that it should work.
Note that I forgot it in some recent -bb/-bs releases, so you'll maybe need
to take it from older ones.
> Thanks for pointing it out though. It's a really useful feature that
> should help me overcome my IP problem.
--
Inform me of my mistakes, so I can keep imitating Homer Simpson's "Doh!".
Paolo Giarrusso, aka Blaisorblade
http://www.user-mode-linux.org/~blaisorblade
Chiacchiera con i tuoi amici in tempo reale!
http://it.yahoo.com/mail_it/foot/*http://it.messenger.yahoo.com
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