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Re: [PATCH v3] nbd/server: Add --selinux-label option

From: Willian Rampazzo
Subject: Re: [PATCH v3] nbd/server: Add --selinux-label option
Date: Thu, 30 Sep 2021 14:00:11 -0300

On Thu, Sep 30, 2021 at 5:55 AM Vladimir Sementsov-Ogievskiy
<vsementsov@virtuozzo.com> wrote:
> 9/30/21 11:47, Richard W.M. Jones wrote:
> > Under SELinux, Unix domain sockets have two labels.  One is on the
> > disk and can be set with commands such as chcon(1).  There is a
> > different label stored in memory (called the process label).  This can
> > only be set by the process creating the socket.  When using SELinux +
> > SVirt and wanting qemu to be able to connect to a qemu-nbd instance,
> > you must set both labels correctly first.
> >
> > For qemu-nbd the options to set the second label are awkward.  You can
> > create the socket in a wrapper program and then exec into qemu-nbd.
> > Or you could try something with LD_PRELOAD.
> >
> > This commit adds the ability to set the label straightforwardly on the
> > command line, via the new --selinux-label flag.  (The name of the flag
> > is the same as the equivalent nbdkit option.)
> >
> > A worked example showing how to use the new option can be found in
> > this bug: https://bugzilla.redhat.com/show_bug.cgi?id=1984938
> >
> > Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1984938
> > Signed-off-by: Richard W.M. Jones <rjones@redhat.com>
> > Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
> > Signed-off-by: Eric Blake <eblake@redhat.com>
> this should be Reviewed-by?

Maybe, because of this:

I got confused with this v3.

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