From patchwork Wed Mar 5 10:08:22 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christian Brauner X-Patchwork-Id: 14002280 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 4EDD01D6DAA for ; Wed, 5 Mar 2025 10:08:51 +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=1741169332; cv=none; b=kvwZ4VU7R8+eU6G03sDVRiYIkHJ8TM42xnPjfiZYSUUXhSDLYnVAONA1sR2lnNqqTqqlw/cI6KpYsq3pxJ5YHcjIy1Fl/bxeuhz8BYKkdG9/ZXwPSLNvvqDYj65JZFhb2Xb4giFwvPovn6PhmU0Tql/iYFaYFKtUIRlvHb9bqzA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741169332; c=relaxed/simple; bh=oP9IhwdJs11Q5YuvhKDWEh1JtMVkn6DkC7RkvocNVOM=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=EWR7OH6cFqAPZ7zDVI0E7Bsg7YMDWPorsmaEleoARSvx+vZtaasZ8A7loryLLDHl4dmgBQwTNtr/UHuo/rfo4Uutkwtxy7t4Lm5IiFQpTw+MdpqommKYuWVyaZI70DoIfw5l96MBqg2adpV20kgflyZxV1mkBtTHVXD2Rz2s8qI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=NOfyB2eB; 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="NOfyB2eB" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3BF86C4CEE2; Wed, 5 Mar 2025 10:08:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1741169331; bh=oP9IhwdJs11Q5YuvhKDWEh1JtMVkn6DkC7RkvocNVOM=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=NOfyB2eBCFr9aghrZXDdSavu5XJaTh5DcyqNhI3zj5KBiuMZkPOq1ftT+hJKo8RqD 6tl6m8ly4TlWdO7B6Iy7qjqrpO9q8ZcnJUhNiFLh+/LX95o98183AUZlOChke/49Vw /qJYAGinL/tBpaVNrygXNrPqeJbzfss3FF+m9oymyyOzJUu6ZdWasrvssfuSwrxwmf zYKDMHBFmY9ZxzyhBEGynvzP/5QowdDpbXS1tcnJ+whYSjskyGmdFBINpoWtr8Jk86 nww89b0LG2eoblKi0kWwlu2ROFtVLexg8q6olgCvxY/WffThtmrYUuO5Vj4+6jkRWk lEY2N6SFWVMmw== From: Christian Brauner Date: Wed, 05 Mar 2025 11:08:22 +0100 Subject: [PATCH v3 12/16] selftests/pidfd: add third 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-v3-12-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=1294; i=brauner@kernel.org; h=from:subject:message-id; bh=oP9IhwdJs11Q5YuvhKDWEh1JtMVkn6DkC7RkvocNVOM=; b=owGbwMvMwCU28Zj0gdSKO4sYT6slMaSfUJqx9nhqqsaLy6LKJqndsbNennVf0HFvK8fpvc7ch TGKbhN1O0pZGMS4GGTFFFkc2k3C5ZbzVGw2ytSAmcPKBDKEgYtTACYSJs7wz/KIwcr+gmesCcdM yyLsV7dzeBVnidik63H1H2/y3agaz/A/wDQnPds0tNnl6v1lGl0+y43S38x4eMfscy/nSWvJjaF cAA== 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-v2-12-44fdacfaa7b7@kernel.org Signed-off-by: Christian Brauner --- tools/testing/selftests/pidfd/pidfd_info_test.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/tools/testing/selftests/pidfd/pidfd_info_test.c b/tools/testing/selftests/pidfd/pidfd_info_test.c index 2a5742a2a55f..2917e7a03b31 100644 --- a/tools/testing/selftests/pidfd/pidfd_info_test.c +++ b/tools/testing/selftests/pidfd/pidfd_info_test.c @@ -161,4 +161,20 @@ TEST_F(pidfd_info, sigkill_reaped) ASSERT_EQ(WTERMSIG(info.exit_code), SIGKILL); } +TEST_F(pidfd_info, success_exit) +{ + struct pidfd_info info = { + .mask = PIDFD_INFO_CGROUPID, + }; + + /* Process has exited but not been reaped so this must work. */ + ASSERT_EQ(ioctl(self->child_pidfd3, PIDFD_GET_INFO, &info), 0); + + info.mask = PIDFD_INFO_CGROUPID | PIDFD_INFO_EXIT; + ASSERT_EQ(ioctl(self->child_pidfd3, PIDFD_GET_INFO, &info), 0); + ASSERT_TRUE(!!(info.mask & PIDFD_INFO_CREDS)); + /* Process has exited but not been reaped, so no PIDFD_INFO_EXIT information yet. */ + ASSERT_FALSE(!!(info.mask & PIDFD_INFO_EXIT)); +} + TEST_HARNESS_MAIN