From mboxrd@z Thu Jan 1 00:00:00 1970 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 9DFCA314D24; Fri, 24 Oct 2025 10:56:23 +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=1761303383; cv=none; b=cCzzxnvIIup0iwIb+stE5QBhA4OazGB2MgnEYPT38ir/2O7zc6nIM/AP3U44Ugpj54NCXOnaJvv5yoZvw2Cwk1HqPe+04y9fPuOk1sIcJPNJVFA9y9gOYretu162gxaQ0wGoT4WrZ+HZJMp251ROCuW7unBvxHRxFjV17Jh52RM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761303383; c=relaxed/simple; bh=UxNNzwwfXU08oQlPAvQ0Gj3cx0fWVzo9FwN6OUP3IWE=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=r2HuiAMNT87t6iH4kaiWXHHmFL1xody/L+Fe50EEVCj3qe957CmBf5lRWZEAD0IT70BfxO4I0deXdmsMwYmMBNa6+AWOZTPOcR7DisqaYtn4F6r2YSWvupxQtzQSqOgrjbQ8gbmtccqNUxrbgmYMja31XnnLPKF/kpVIZBobZks= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=o0+PQ7VR; 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="o0+PQ7VR" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CD267C4CEF5; Fri, 24 Oct 2025 10:56:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1761303383; bh=UxNNzwwfXU08oQlPAvQ0Gj3cx0fWVzo9FwN6OUP3IWE=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=o0+PQ7VRpTPf1RoflNfIYBzi4NN2upfzZd4YOiX9pG9/MW1Cg5W2+DbhfDwbWMVUo ysiuojmhoCXqCa5YIJihEy/23arASAhoc/EKl+ke30/RvpM9FBQydhpg+qUft9KK/y GspxwRaoLGQVa9Fas1FSOQW73AUAOivTp7tMuBmjARqMvPBhmERuyYca5uvL8OLYWw xsdR6r7ZO1u4rj07za7aYxM4hkyEUBjE9bz8/gwXzXEzeDq2W7C0c1bKXppcH9J9r0 Z3gLygpAqNY7S2bV0VYB0uw+R5iGxf6VQohncdB/eFNZY0ESyx5yPLKAmvVkVR1gLC XUlzS3xU1CAiA== From: Christian Brauner Date: Fri, 24 Oct 2025 12:53:09 +0200 Subject: [PATCH v3 40/70] selftests/namespaces: fourth listns() test Precedence: bulk X-Mailing-List: cgroups@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20251024-work-namespace-nstree-listns-v3-40-b6241981b72b@kernel.org> References: <20251024-work-namespace-nstree-listns-v3-0-b6241981b72b@kernel.org> In-Reply-To: <20251024-work-namespace-nstree-listns-v3-0-b6241981b72b@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=1513; i=brauner@kernel.org; h=from:subject:message-id; bh=UxNNzwwfXU08oQlPAvQ0Gj3cx0fWVzo9FwN6OUP3IWE=; b=owGbwMvMwCU28Zj0gdSKO4sYT6slMWT8jmpzvhzw8pziInXpH87zF2xWP6op23jjoJ2HH+v1x UITNnGu6yhlYRDjYpAVU2RxaDcJl1vOU7HZKFMDZg4rE8gQBi5OAZiI1gVGhi636ReOlyz6F3+b daevx2dLOxGFtC9pZosac8U21nCG72H4pxao1b5H73vDI/GSryzndDc/WzzBcG3etKAMjZ/pzKu eMwEA X-Developer-Key: i=brauner@kernel.org; a=openpgp; fpr=4880B8C9BD0E5106FC070F4F7B3C391EFEA93624 Test listns() with LISTNS_CURRENT_USER. List namespaces owned by current user namespace. Signed-off-by: Christian Brauner --- tools/testing/selftests/namespaces/listns_test.c | 33 ++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/tools/testing/selftests/namespaces/listns_test.c b/tools/testing/selftests/namespaces/listns_test.c index 7dff63a00263..457298cb4c64 100644 --- a/tools/testing/selftests/namespaces/listns_test.c +++ b/tools/testing/selftests/namespaces/listns_test.c @@ -168,4 +168,37 @@ TEST(listns_pagination) } } +/* + * Test listns() with LISTNS_CURRENT_USER. + * List namespaces owned by current user namespace. + */ +TEST(listns_current_user) +{ + struct ns_id_req req = { + .size = sizeof(req), + .spare = 0, + .ns_id = 0, + .ns_type = 0, + .spare2 = 0, + .user_ns_id = LISTNS_CURRENT_USER, + }; + __u64 ns_ids[100]; + ssize_t ret; + + ret = sys_listns(&req, ns_ids, ARRAY_SIZE(ns_ids), 0); + if (ret < 0) { + if (errno == ENOSYS) + SKIP(return, "listns() not supported"); + TH_LOG("listns failed: %s (errno=%d)", strerror(errno), errno); + ASSERT_TRUE(false); + } + ASSERT_GE(ret, 0); + + /* Should find at least the initial namespaces if we're in init_user_ns */ + TH_LOG("Found %zd namespaces owned by current user namespace", ret); + + for (ssize_t i = 0; i < ret; i++) + TH_LOG(" [%zd] ns_id: %llu", i, (unsigned long long)ns_ids[i]); +} + TEST_HARNESS_MAIN -- 2.47.3