Date: Sat, 7 Nov 2026 13:23:01 +0100
From: Alejandro Colomar <alx@kernel.org>
To: =?utf-8?Q?G=C3=BCnther?= Noack <gnoack3000@gmail.com>
Cc: Miklos Szeredi <mszeredi@redhat.com>, linux-man@vger.kernel.org
Subject: Re: [PATCH] man/man2/rename.2: Remove CAP_MKNOD remark about
 whiteout creation
Message-ID: <au8YEwtmpAMwwcmr@debian>
References: <20261009143656.4884-1-gnoack3000@gmail.com>
 <ask-80Zlt0ygw0pk@debian>
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From: Alejandro Colomar <alx@kernel.org>
To: =?utf-8?Q?G=C3=BCnther?= Noack <gnoack3000@gmail.com>
Cc: Miklos Szeredi <mszeredi@redhat.com>, linux-man@vger.kernel.org
Subject: Re: [PATCH] man/man2/rename.2: Remove CAP_MKNOD remark about
 whiteout creation
Message-ID: <au8YEwtmpAMwwcmr@debian>
References: <20261009143656.4884-1-gnoack3000@gmail.com>
 <ask-80Zlt0ygw0pk@debian>
MIME-Version: 1.0
In-Reply-To: <ask-80Zlt0ygw0pk@debian>

Hi,

> Date: 2026-10-09 21:27:05+0200
> From: Alejandro Colomar <alx@kernel.org>
>
> Hi G=C3=BCnther,
>=20
> > Date: 2026-10-09 16:36:56+0200
> > From: G=C3=BCnther Noack <gnoack3000@gmail.com>
> >
> > Whiteout objects do not count as device files and do not require
> > CAP_MKNOD since linux.git a3c751a50fe6 (2020-05-14; "vfs: allow
> > unprivileged whiteout creation").
>=20
> Thanks!  I checked the referenced commit, and it seems correct.
>=20
> Reviewed-by: Alejandro Colomar <alx@kernel.org>
>=20
> (I'm not taking the patch yet, in case Miklos wants to comment, but
>  I will take it eventually.)

I've applied the patch.  Thanks!


Cheers,
Alex

>=20
> > Signed-off-by: G=C3=BCnther Noack <gnoack3000@gmail.com>
>=20
> You forgot to CC the list.  :)
>=20
>=20
> Have a lovely night!
> Alex
>=20
>=20
> > ---
> >  man/man2/rename.2 | 5 -----
> >  1 file changed, 5 deletions(-)
> >=20
> > diff --git a/man/man2/rename.2 b/man/man2/rename.2
> > index 14be6b20d3c9..7e5c02797230 100644
> > --- a/man/man2/rename.2
> > +++ b/man/man2/rename.2
> > @@ -250,11 +250,6 @@ is ignored by the kernel's whiteout support code,
> >  as of Linux 4.19, at least.)
> >  .IP
> >  .B RENAME_WHITEOUT
> > -requires the same privileges as creating a device node (i.e., the
> > -.B CAP_MKNOD
> > -capability).
> > -.IP
> > -.B RENAME_WHITEOUT
> >  can't be employed together with
> >  .BR RENAME_EXCHANGE .
> >  .IP
> > --=20
> > 2.56.0
> >=20
>=20
> --=20
> <https://www.alejandro-colomar.es>


--=20
<https://www.alejandro-colomar.es>

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