From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dave Chinner Subject: Re: [PATCH 1/2] fchownat.2: add project support updates Date: Mon, 4 Mar 2019 10:08:20 +1100 Message-ID: <20190303230820.GU23020@dastard> References: <1551449184-7942-1-git-send-email-wshilong1991@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <1551449184-7942-1-git-send-email-wshilong1991@gmail.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net To: Wang Shilong Cc: adilger@dilger.ca, linux-man@vger.kernel.org, Wang Shilong , lixi@ddn.com, linux-f2fs-devel@lists.sourceforge.net, linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org List-Id: linux-man@vger.kernel.org On Fri, Mar 01, 2019 at 11:06:22PM +0900, Wang Shilong wrote: > From: Wang Shilong > > From: Wang Shilong > > Cc: linux-man@vger.kernel.org > Signed-off-by: Wang Shilong > --- > man2/chown.2 | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/man2/chown.2 b/man2/chown.2 > index 50db789ac..fad74df20 100644 > --- a/man2/chown.2 > +++ b/man2/chown.2 > @@ -217,6 +217,11 @@ instead operate on the link itself, like > .BR fchownat () > dereferences symbolic links, like > .BR chown ().) > +.TP > +.B AT_FCHOWN_PROJID > +Use > +.I group > +to change file's project ID instead of its group ID. Needs to document init_user_ns constraint. > .PP > See > .BR openat (2) Also missing new ENOSPC error that attempting to change a project ID can result in. Also should document the EPERM error condition when changing project ID in wrong userns, and EINVAL if an invalid project ID is supplied. Cheers, Dave. -- Dave Chinner david@fromorbit.com