linux-kernel - Re: [PATCH v3 0/2] allow blk-zoned ioctls without CAP_SYS

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Message-ID: <YNl4LXUKOftl15M9@x1-carbon.lan>
Date:   Mon, 28 Jun 2021 07:20:15 +0000
From:   Niklas Cassel <Niklas.Cassel@....com>
To:     Jens Axboe <axboe@...nel.dk>
CC:     Jens Axboe <axboe@...com>,
        "linux-block@...r.kernel.org" <linux-block@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 0/2] allow blk-zoned ioctls without CAP_SYS_ADMIN

On Mon, Jun 14, 2021 at 12:23:19PM +0000, Niklas Cassel wrote:
> From: Niklas Cassel <niklas.cassel@....com>
> 
> Allow the following blk-zoned ioctls: BLKREPORTZONE, BLKRESETZONE,
> BLKOPENZONE, BLKCLOSEZONE, and BLKFINISHZONE to be performed without
> CAP_SYS_ADMIN.
> 
> Neither read() nor write() requires CAP_SYS_ADMIN, and considering
> the close relationship between read()/write() and these ioctls, there
> is no reason to require CAP_SYS_ADMIN for these ioctls either.
> 
> Changes since v2:
> -Drop the FMODE_READ check from patch 2/2.
> Right now it is possible to open() the device with O_WRONLY
> and get the zone report from that fd. Therefore adding a
> FMODE_READ check on BLKREPORTZONE would break existing applications.
> Instead, just remove the existing CAP_SYS_ADMIN check.
> 
> 
> Niklas Cassel (2):
>   blk-zoned: allow zone management send operations without CAP_SYS_ADMIN
>   blk-zoned: allow BLKREPORTZONE without CAP_SYS_ADMIN
> 
>  block/blk-zoned.c | 6 ------
>  1 file changed, 6 deletions(-)
> 
> -- 
> 2.31.1

Hello Jens,


A gentle ping on this series.

I think it has sufficient Reviewed-by tags by now.


Kind regards,
Niklas