From nobody Sun Feb 8 14:56:25 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7E947382865; Wed, 22 Oct 2025 16:11:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761149464; cv=none; b=V44g1c7/I3gP6SPgfSiPgcpwL7wHP3EHYoz4CPA6x61WkH94KXQzTm5stkMceGiTSjPbIPorQfpe5739QCEe3N4xUvxQgm+p9mk3Ju+jgACf11NNOw5S8h2DOQy4BdG23iJI2d67IKagXSqINTpJw3KIXJUQVa2esohronvzllw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761149464; c=relaxed/simple; bh=ufWjPwiVFUvMc1yUrgMdzg/t00J0XDkru7okPfPAtyE=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=onBz+9DeHJeqOB3yfVs4NSaoic3DuGpUZgAQvBv2e3ElgiSYaSHduIQV118D24Nlvg+iwEbxEQdbfnHdrmKa1jB3Qqdr7uT3oKPlOwmARlKN/P/S70m6UU3XJdRb8iMPVaUxn+5GE/SL2sRkjFTU+P7AWpddSBvAu3nUrfFqtMc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=n7XU/sVa; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="n7XU/sVa" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1F30EC4CEFD; Wed, 22 Oct 2025 16:10:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1761149464; bh=ufWjPwiVFUvMc1yUrgMdzg/t00J0XDkru7okPfPAtyE=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=n7XU/sVaIYqM0xGtka3zmyCDO/RnWLcgBOSjQvF9DL2clSpBoTCjkSJk0xfOmNFml Hd6YgdSSXVvjT+GYTfhQeK9magtak62q0fb8/GQlPz96yJ84f039H2mIjiFiK/6jSi pq0OcH++X43g5QOvJnP16aqlcc4I6qqt+ERNHe/Bw6WvFOwP06YVUb90rydUvte6U2 +teBWDKL5BkkKGG1DDfzS0R37k4swXCW+GCRTKhsPRsKQIQpaqLdBGmUtW0YFfvsqO Bizh32o4u8sWJiu/RSPmXdC/qsl0jaUN+C6Diuc0E1uBTfu5HQ3BTrrq5mKUYsT8gt NEiWAsZXObdHw== From: Christian Brauner Date: Wed, 22 Oct 2025 18:06:34 +0200 Subject: [PATCH v2 56/63] selftests/namespaces: fifth inactive namespace resurrection test Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20251022-work-namespace-nstree-listns-v2-56-71a588572371@kernel.org> References: <20251022-work-namespace-nstree-listns-v2-0-71a588572371@kernel.org> In-Reply-To: <20251022-work-namespace-nstree-listns-v2-0-71a588572371@kernel.org> To: linux-fsdevel@vger.kernel.org, Josef Bacik , Jeff Layton Cc: Jann Horn , Mike Yuan , =?utf-8?q?Zbigniew_J=C4=99drzejewski-Szmek?= , Lennart Poettering , Daan De Meyer , Aleksa Sarai , Amir Goldstein , Tejun Heo , Johannes Weiner , Thomas Gleixner , Alexander Viro , Jan Kara , linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, bpf@vger.kernel.org, Eric Dumazet , Jakub Kicinski , netdev@vger.kernel.org, Arnd Bergmann , Christian Brauner X-Mailer: b4 0.15-dev-96507 X-Developer-Signature: v=1; a=openpgp-sha256; l=1167; i=brauner@kernel.org; h=from:subject:message-id; bh=ufWjPwiVFUvMc1yUrgMdzg/t00J0XDkru7okPfPAtyE=; b=owGbwMvMwCU28Zj0gdSKO4sYT6slMWT8ZHg+b3lyQM0OvdZWtWliia/Z7u8Syzy5+EfiRR0jO bFLp/b6d5SyMIhxMciKKbI4tJuEyy3nqdhslKkBM4eVCWQIAxenAEzE6xgjwyPOVYp6/x5y/Tu1 opHrxduTeU6cwcm161erzlCWEj4RXMfIsPHzMtmQcxOWTjx5K9x/md3zqh1e3GeTBY+UzVvCUsL 5iQMA X-Developer-Key: i=brauner@kernel.org; a=openpgp; fpr=4880B8C9BD0E5106FC070F4F7B3C391EFEA93624 Test SIOCGSKNS fails on non-socket file descriptors. Signed-off-by: Christian Brauner --- .../testing/selftests/namespaces/siocgskns_test.c | 26 ++++++++++++++++++= ++++ 1 file changed, 26 insertions(+) diff --git a/tools/testing/selftests/namespaces/siocgskns_test.c b/tools/te= sting/selftests/namespaces/siocgskns_test.c index 3aed6e3d60a3..4134a13c2f74 100644 --- a/tools/testing/selftests/namespaces/siocgskns_test.c +++ b/tools/testing/selftests/namespaces/siocgskns_test.c @@ -308,4 +308,30 @@ TEST(siocgskns_across_setns) close(netns_a_fd); } =20 +/* + * Test SIOCGSKNS fails on non-socket file descriptors. + */ +TEST(siocgskns_non_socket) +{ + int fd; + int pipefd[2]; + + /* Test on regular file */ + fd =3D open("/dev/null", O_RDONLY); + ASSERT_GE(fd, 0); + + ASSERT_LT(ioctl(fd, SIOCGSKNS), 0); + ASSERT_TRUE(errno =3D=3D ENOTTY || errno =3D=3D EINVAL); + close(fd); + + /* Test on pipe */ + ASSERT_EQ(pipe(pipefd), 0); + + ASSERT_LT(ioctl(pipefd[0], SIOCGSKNS), 0); + ASSERT_TRUE(errno =3D=3D ENOTTY || errno =3D=3D EINVAL); + + close(pipefd[0]); + close(pipefd[1]); +} + TEST_HARNESS_MAIN --=20 2.47.3