From: Christoph Hellwig <hch@lst.de>
To: Kanchan Joshi <joshi.k@samsung.com>
Cc: Christoph Hellwig <hch@lst.de>, Keith Busch <kbusch@kernel.org>,
Sagi Grimberg <sagi@grimberg.me>,
Chaitanya Kulkarni <kch@nvidia.com>,
linux-nvme@lists.infradead.org
Subject: Re: [PATCH 9/9] nvme: don't allow unprivileged passthrough of commands that have effects
Date: Thu, 15 Dec 2022 09:18:29 +0100 [thread overview]
Message-ID: <20221215081829.GA3816@lst.de> (raw)
In-Reply-To: <20221215071405.GA27656@test-zns>
On Thu, Dec 15, 2022 at 12:44:05PM +0530, Kanchan Joshi wrote:
> So even for operation that do not alter anything (e.g. nvme_cmd_read)
> nvme_is_write will return false, but nvme_command_effects will return
> true and we will ask for FMODE_WRITE. Is that intentional?
>
> I think doing "nvme_command_effects(ctrl, ns, opcode) &
> ~NVME_CMD_EFFECTS_CSUPP"
> is better to avoid that?
Take a look at patch 6.
next prev parent reply other threads:[~2022-12-15 8:18 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-14 16:13 only allow unprivileged passthrough for commands without effects v2 Christoph Hellwig
2022-12-14 16:13 ` [PATCH 1/9] nvmet: use NVME_CMD_EFFECTS_CSUPP instead of open coding it Christoph Hellwig
2022-12-14 16:13 ` [PATCH 2/9] nvmet: set the LBCC bit for commands that modify data Christoph Hellwig
2022-12-14 16:13 ` [PATCH 3/9] nvme: remove nvme_execute_passthru_rq Christoph Hellwig
2022-12-14 16:13 ` [PATCH 4/9] nvmet: refactor passthru fixup code Christoph Hellwig
2022-12-14 16:13 ` [PATCH 5/9] nvmet: allow async passthrough of commands that change logical block contents Christoph Hellwig
2022-12-14 16:13 ` [PATCH 6/9] nvme: only return actual effects from nvme_command_effects Christoph Hellwig
2022-12-14 16:13 ` [PATCH 7/9] nvme: assign known effects at controller initialization time Christoph Hellwig
2022-12-14 16:34 ` Keith Busch
2022-12-15 13:15 ` Kanchan Joshi
2022-12-14 16:13 ` [PATCH 8/9] nvme: also return I/O command effects from nvme_command_effects Christoph Hellwig
2022-12-14 16:13 ` [PATCH 9/9] nvme: don't allow unprivileged passthrough of commands that have effects Christoph Hellwig
2022-12-15 7:14 ` Kanchan Joshi
2022-12-15 8:18 ` Christoph Hellwig [this message]
2022-12-15 8:24 ` Kanchan Joshi
2022-12-15 8:37 ` Christoph Hellwig
2022-12-14 16:36 ` only allow unprivileged passthrough for commands without effects v2 Keith Busch
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