From patchwork Wed Mar 5 10:08:24 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christian Brauner X-Patchwork-Id: 14002282 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 A5BE42063DA for ; Wed, 5 Mar 2025 10:08:56 +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=1741169336; cv=none; b=JF6gWIYttg1AksHg4NSjgATl5yuSSXIqvobxFvW70Y0yGmQdoGDo6cYfIGymF5mdWv+ZuMDsjin7k1G1sAEBQ3AuN6RwtARF8RuBJ5B8LmHfbx3xoI4YDES6DXhcd7RRbB7SzcatI1o1CsX6g6velv1oB9c93LcSczo99y3igpA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741169336; c=relaxed/simple; bh=09cygfBWafKS4lAMkHha117hVNJDUvnJJYHRqyPblAo=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=DKKcHb+jCPdUTwuGknMubCgwvB6QZOltiMySlgBng9eiH0qWSxvhKls5zWA5QCLL04WVDOlgzdBIwQSzJnyk9MWhBSUErG8v3ZdAfyOo6KB9R/jyvafBeWmAv3FrZqvWjEtWgQJCBY5R8g0El/BGMPIIZjfZL2SPK6n7E/XwTaM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=anF5O6ax; 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="anF5O6ax" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8470AC4CEE2; Wed, 5 Mar 2025 10:08:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1741169336; bh=09cygfBWafKS4lAMkHha117hVNJDUvnJJYHRqyPblAo=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=anF5O6ax9UhrVbvRCvjAVOIDpH9u/r834e5Y5YM+1d8RA1mkxwkkayohMRVRJN01s RoR5UqolM6GuDBQQm6muLSQubDlpwjO37uW9tukQ9BrYpznjPhrbvlf39mmgBEh4D0 UJQqtQuobgCxU8TMIkiYh55p0ieio7PRtqi2dqlGG3ZR3J81m/Lv0YJx/bGygyK/bu +THr/tKduY/CzFnXEaG5velZigHHyCRW/U5Vb1jxgiL3GGZoPq5nfzILgb8sG8ZFTO EVvVDBwJNE/e+1AXjz0HofQE44q3wajZ5PKXYye3SdHvukB/smCcRLxtC6sg0rOHm9 nRmY2bJd1PaUg== From: Christian Brauner Date: Wed, 05 Mar 2025 11:08:24 +0100 Subject: [PATCH v3 14/16] 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: <20250305-work-pidfs-kill_on_last_close-v3-14-c8c3d8361705@kernel.org> References: <20250305-work-pidfs-kill_on_last_close-v3-0-c8c3d8361705@kernel.org> In-Reply-To: <20250305-work-pidfs-kill_on_last_close-v3-0-c8c3d8361705@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=1386; i=brauner@kernel.org; h=from:subject:message-id; bh=09cygfBWafKS4lAMkHha117hVNJDUvnJJYHRqyPblAo=; b=owGbwMvMwCU28Zj0gdSKO4sYT6slMaSfUJqRlpoVs6I0yMDnzg7Jw1L2S6c8PZPDJReuxao1Q YXXeGltRwkLgxgXg6yYIotDu0m43HKeis1GmRowc1iZQIYwcHEKwEQ07jH8eD2LlWny+h+BCw14 n//XvsTFytS0oTa6R51B7/MEWddcRobf6Us/Oupd3KAYdiXxy9E5jKcj6hw3hXx9/sDT9PzdZyk 8AA== X-Developer-Key: i=brauner@kernel.org; a=openpgp; fpr=4880B8C9BD0E5106FC070F4F7B3C391EFEA93624 Add a selftest for PIDFD_INFO_EXIT behavior. Link: https://lore.kernel.org/r/20250304-work-pidfs-kill_on_last_close-v2-14-44fdacfaa7b7@kernel.org 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