Re: [PATCH] security: selinux: allow per-file labelling for binderfs

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On Mon, Jan 6, 2020 at 11:33 AM Stephen Smalley <sds@xxxxxxxxxxxxx> wrote:
>
> On 1/6/20 2:06 PM, Hridya Valsaraju wrote:
> > On Mon, Jan 6, 2020 at 10:33 AM 'Stephen Smalley' via kernel-team
> > <kernel-team@xxxxxxxxxxx> wrote:
> >>
> >> On 1/6/20 1:13 PM, Hridya Valsaraju wrote:
> >>> This patch allows genfscon per-file labeling for binderfs.
> >>> This is required to have separate permissions to allow
> >>> access to binder, hwbinder and vndbinder devices which are
> >>> relocating to binderfs.
> >>>
> >>> Acked-by: Jeff Vander Stoep <jeffv@xxxxxxxxxx>
> >>> Acked-by: Mark Salyzyn <salyzyn@xxxxxxxxxxx>
> >>> Signed-off-by: Hridya Valsaraju <hridya@xxxxxxxxxx>
> >>
> >> Do you want binderfs to also support userspace labeling of files via
> >> setxattr()?  If so, you'll want to also add it to
> >> selinux_is_genfs_special_handling() as well.
> >
> > Thank you for the quick response Stephen :) I cannot think of a
> > use-case for the userspace labelling of files in binderfs via
> > setxattr() as of now. I
> > will make the change if one comes up!
>
> Ok, then you can include my:
> Acked-by: Stephen Smalley <sds@xxxxxxxxxxxxx>

Great! Thank you for reviewing my patch Stephen!

Regards,
Hridya

>
> >
> > Thanks,
> > Hridya
> >
> >
> >>
> >>> ---
> >>>    security/selinux/hooks.c | 1 +
> >>>    1 file changed, 1 insertion(+)
> >>>
> >>> diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
> >>> index 116b4d644f68..3f0669a708e9 100644
> >>> --- a/security/selinux/hooks.c
> >>> +++ b/security/selinux/hooks.c
> >>> @@ -752,6 +752,7 @@ static int selinux_set_mnt_opts(struct super_block *sb,
> >>>
> >>>        if (!strcmp(sb->s_type->name, "debugfs") ||
> >>>            !strcmp(sb->s_type->name, "tracefs") ||
> >>> +         !strcmp(sb->s_type->name, "binderfs") ||
> >>>            !strcmp(sb->s_type->name, "pstore"))
> >>>                sbsec->flags |= SE_SBGENFS;
> >>>
> >>>
> >>
> >> --
> >> To unsubscribe from this group and stop receiving emails from it, send an email to kernel-team+unsubscribe@xxxxxxxxxxx.
> >>
>



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