Re: [PATCH 1/1] virt-aa-helper: allow hard links for mounts

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On Donnerstag, 22. Oktober 2020 19:07:33 CEST Michal Privoznik wrote:
> [Please don't CC random people on patches until asked to, we are all
> subscribed to the list]
> 

Got it, I'll refrain from CCing on libvirt in future.

Not as erratic as it looks like though: I CCed people who touched this 
specific AppArmor permission before, plus the virtiofs maintainers.

> On 10/22/20 4:58 PM, Christian Schoenebeck wrote:
> > Guests should be allowed to create hard links on mounted pathes, since
> > many applications rely on this functionality and would error on guest
> > with current "rw" AppArmor permission with 9pfs.
> > 
> > Signed-off-by: Christian Schoenebeck <qemu_oss@xxxxxxxxxxxxx>
> > ---
> > 
> >   src/security/virt-aa-helper.c | 2 +-
> >   1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/src/security/virt-aa-helper.c b/src/security/virt-aa-helper.c
> > index 12429278fb..5a6f4a5f7d 100644
> > --- a/src/security/virt-aa-helper.c
> > +++ b/src/security/virt-aa-helper.c
> > @@ -1142,7 +1142,7 @@ get_files(vahControl * ctl)
> > 
> >               /* We don't need to add deny rw rules for readonly mounts,
> >               
> >                * this can only lead to troubles when mounting / readonly.
> >                */
> > 
> > -            if (vah_add_path(&buf, fs->src->path, fs->readonly ? "R" :
> > "rw", true) != 0) +            if (vah_add_path(&buf, fs->src->path,
> > fs->readonly ? "R" : "rwl", true) != 0)> 
> >                   goto cleanup;
> >           
> >           }
> >       
> >       }
> 
> Reviewed-by: Michal Privoznik <mprivozn@xxxxxxxxxx>
> 
> but I will give a day or two for other developers to chime in.
> 
> Michal

Yes, please wait couple days to see whether there are reactions.

Best regards,
Christian Schoenebeck





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