Re: [PATCH 1/2] fchownat.2: add project support updates

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On Fri, Mar 01, 2019 at 11:06:22PM +0900, Wang Shilong wrote:
> From: Wang Shilong <wshilong@xxxxxxx>
> 
> From: Wang Shilong <wshilong@xxxxxxx>
> 
> Cc: linux-man@xxxxxxxxxxxxxxx
> Signed-off-by: Wang Shilong <wshilong@xxxxxxx>
> ---
>  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@xxxxxxxxxxxxx



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