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([2406:7400:56:97af:5038:b049:4f32:e620]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-3537ca329d9sm38195439eec.5.2026.10.12.09.46.50 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 12 Oct 2026 09:46:51 -0700 (PDT) Message-ID: <6fcc096d-c049-4a72-a33f-54aef6151a0e@gmail.com> Date: Mon, 12 Oct 2026 22:16:47 +0530 Precedence: bulk X-Mailing-List: linux-btrfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] fstests: btrfs: test if btrfs control file rejects unknown ioctls To: Qu Wenruo , linux-btrfs@vger.kernel.org, fstests@vger.kernel.org References: <20261011230716.16860-1-wqu@suse.com> Content-Language: en-US From: Dhruva G In-Reply-To: <20261011230716.16860-1-wqu@suse.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 12-10-2026 04:37, Qu Wenruo wrote: > This is a regression test for a recent bug fix, where unsupported ioctls > are not properly rejected for btrfs control file (normally at > "/dev/btrfs-control"). > > The test case itself is super simple, which doesn't even require test or > scratch device, it just run the "btrfs_ioctl" program using > "get_subvol_info" ioctl on "/dev/btrfs-control", which should fail as > that ioctl only makes sense on a mounted btrfs, not the btrfs control > file. > > The error will be outputted to the golden output so that we can catch > any unexpected success. > > Signed-off-by: Qu Wenruo > --- > tests/btrfs/359 | 26 ++++++++++++++++++++++++++ fails before the fix, passes after it on a local x86_64 Btrfs VM. Tested-by: Dhruva Gole Reviewed-by: Dhruva Gole Regards, Dhruva Gole