From: David Sterba <dsterba@suse.cz>
To: Niklas Cassel <Niklas.Cassel@wdc.com>
Cc: Jens Axboe <axboe@kernel.dk>,
Damien Le Moal <Damien.LeMoal@wdc.com>,
"linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 2/2] blk-zoned: allow BLKREPORTZONE without CAP_SYS_ADMIN
Date: Thu, 3 Jun 2021 11:51:17 +0200 [thread overview]
Message-ID: <20210603095117.GU31483@twin.jikos.cz> (raw)
In-Reply-To: <20210531135444.122018-3-Niklas.Cassel@wdc.com>
On Mon, May 31, 2021 at 01:54:53PM +0000, Niklas Cassel wrote:
> From: Niklas Cassel <niklas.cassel@wdc.com>
>
> Performing a BLKREPORTZONE operation should be allowed under the same
> permissions as read(). (read() does not require CAP_SYS_ADMIN).
>
> Remove the CAP_SYS_ADMIN requirement, and instead check that the fd was
> successfully opened with FMODE_READ. This way BLKREPORTZONE will match
> the access control requirement of read().
Does this mean that a process that does not have read nor write access
to the device itself (blocks) is capable of reading the zone
information? Eg. some monitoring tool.
next prev parent reply other threads:[~2021-06-03 9:54 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-31 13:54 [PATCH 0/2] allow blk-zoned ioctls without CAP_SYS_ADMIN Niklas Cassel
2021-05-31 13:54 ` [PATCH 1/2] blk-zoned: allow zone management send operations " Niklas Cassel
2021-05-31 13:54 ` [PATCH 2/2] blk-zoned: allow BLKREPORTZONE " Niklas Cassel
2021-06-03 9:51 ` David Sterba [this message]
2021-06-03 10:00 ` Damien Le Moal
2021-06-03 10:04 ` David Sterba
2021-06-03 11:20 ` Damien Le Moal
2021-06-03 11:59 ` Niklas Cassel
2021-06-03 14:44 ` David Sterba
2021-05-31 23:34 ` [PATCH 0/2] allow blk-zoned ioctls " Damien Le Moal
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