From patchwork Tue Mar 4 09:41:14 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christian Brauner X-Patchwork-Id: 14000340 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 E83931FC11A for ; Tue, 4 Mar 2025 09:41:45 +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=1741081306; cv=none; b=T+CpaE/7P9zXaR0jmc+HI1C1Mld6VG1cdEyjp27vNwnxAJKH6zzDFQ+IZ59T+UebmS9jfKFEqPWQfVCIZXsb0H2vajsuw8nhWcXA5H32wQRExpvJ0OWPOGdRL+AXCzBEMCPE0DTJXeQ0Dkx10RKUThkXYj4nFu08Upv9F3tl8Ao= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741081306; c=relaxed/simple; bh=09EI8zIEUUfNNhCutUmrWMQ1gF9fbyxFdOpSnbEaNr0=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=qreeDfH/yCtrqErH2i+svL3W8MVH+BMjKc1Sz4taHp4dY+xMvVw+dvfCr55DXNOwtGgXNr5PgVUeVH2dSctOzhJnD3ppfgbz9UDd0xVZ/XewaAU5IM7HyNbBDfootSKdPIrw/Z1nIzmd2OcIGgoVi0GZfwRpHebvj4d/+gtgUX0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=EvjfiLuP; 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="EvjfiLuP" Received: by smtp.kernel.org (Postfix) with ESMTPSA id F0DBFC4CEE5; Tue, 4 Mar 2025 09:41:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1741081305; bh=09EI8zIEUUfNNhCutUmrWMQ1gF9fbyxFdOpSnbEaNr0=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=EvjfiLuPprxlbC0eaW/7x/b2b6XTpOdbZXQ6Nz9Ik3Cpe/Ld90BJQTIi2Gj8hmuel ugAL3kVL3rXUilszhanGwiNF2wyEXAw6070TBilwp9lIHFF2VBxSXq0XT70yiolDmK OixA/m0h2OHK2UPDRK4V6z0r2es9U+3r14wWSb8Q1mI53A8+NjZJ9wZwN6lkjIK9hv 3zaoKv9iDANYpVqGHvGPrybBcTRA/UFRPoj9oSiVl/EF+uvdqUPVbQX9uS6aVfgfpj reJMn4oFoCegZmvclNvtMIOeUlasYJrca41fTs9IixuJUHEovpJEGnvutidaXObFge eo+/Sv9HQDjbg== From: Christian Brauner Date: Tue, 04 Mar 2025 10:41:14 +0100 Subject: [PATCH v2 14/15] selftests/pidfd: add fifth PIDFD_INFO_EXIT selftest Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250304-work-pidfs-kill_on_last_close-v2-14-44fdacfaa7b7@kernel.org> References: <20250304-work-pidfs-kill_on_last_close-v2-0-44fdacfaa7b7@kernel.org> In-Reply-To: <20250304-work-pidfs-kill_on_last_close-v2-0-44fdacfaa7b7@kernel.org> To: Oleg Nesterov Cc: linux-fsdevel@vger.kernel.org, Jeff Layton , Lennart Poettering , Daan De Meyer , Mike Yuan , Christian Brauner X-Mailer: b4 0.15-dev-42535 X-Developer-Signature: v=1; a=openpgp-sha256; l=1284; i=brauner@kernel.org; h=from:subject:message-id; bh=09EI8zIEUUfNNhCutUmrWMQ1gF9fbyxFdOpSnbEaNr0=; b=owGbwMvMwCU28Zj0gdSKO4sYT6slMaQfO7X76DmbJ2dXP9sRbtQ9faqE/9LJD91/B5a1lS4Xt ysyuVE1o6OUhUGMi0FWTJHFod0kXG45T8Vmo0wNmDmsTCBDGLg4BWAi6i8Z/keKqm01S+v9m7HY aUXAPR3u/Z1zBRNu3T0yteusRNekjOMM/90VZq1idD64iPFj5Ta99ddfvlmW8HGCenhnt5Tg/Rs idfwA X-Developer-Key: i=brauner@kernel.org; a=openpgp; fpr=4880B8C9BD0E5106FC070F4F7B3C391EFEA93624 Add a selftest for PIDFD_INFO_EXIT behavior. Signed-off-by: Christian Brauner --- tools/testing/selftests/pidfd/pidfd_info_test.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/tools/testing/selftests/pidfd/pidfd_info_test.c b/tools/testing/selftests/pidfd/pidfd_info_test.c index 0d0af4c2a84d..16e4be2364df 100644 --- a/tools/testing/selftests/pidfd/pidfd_info_test.c +++ b/tools/testing/selftests/pidfd/pidfd_info_test.c @@ -195,4 +195,27 @@ TEST_F(pidfd_info, success_reaped) ASSERT_EQ(WEXITSTATUS(info.exit_code), 0); } +TEST_F(pidfd_info, success_reaped_poll) +{ + struct pidfd_info info = { + .mask = PIDFD_INFO_CGROUPID | PIDFD_INFO_EXIT, + }; + struct pollfd fds = {}; + int nevents; + + fds.events = POLLIN; + fds.fd = self->child_pidfd2; + + nevents = poll(&fds, 1, -1); + ASSERT_EQ(nevents, 1); + ASSERT_TRUE(!!(fds.revents & POLLIN)); + ASSERT_TRUE(!!(fds.revents & POLLHUP)); + + ASSERT_EQ(ioctl(self->child_pidfd2, PIDFD_GET_INFO, &info), 0); + ASSERT_FALSE(!!(info.mask & PIDFD_INFO_CREDS)); + ASSERT_TRUE(!!(info.mask & PIDFD_INFO_EXIT)); + ASSERT_TRUE(WIFSIGNALED(info.exit_code)); + ASSERT_EQ(WTERMSIG(info.exit_code), SIGKILL); +} + TEST_HARNESS_MAIN