From patchwork Tue Mar 4 09:41:11 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christian Brauner X-Patchwork-Id: 14000337 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 F0AA41F8BCB for ; Tue, 4 Mar 2025 09:41:39 +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=1741081300; cv=none; b=q2VgMvtJ+3fCAvFyPJ2h75RaDdPTQneMCtwRLArLWCO3u+/5g1hO/uN7+n2LOAQpKHE2temDzQJFEOCAS4XqJECS+Cx12TobgBR8E5XBbb/mQUePqgPu+W66nQ2YsQdtKxpkTqVngFpa6deFgbxEjMPHrDE7TmHTJHbj4G2PP1A= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741081300; c=relaxed/simple; bh=UGeeT2+jg9AmN+yurFJkqAxGf9SX4b826fWEeFpnTxE=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=YbL40DOulqFEG+SGX3tOPkpYqdkVhGLlrhynSdJeGYx9iL5ZK7E65EDcYZPvlfXpvzA8pYg/1AmIQjzyXUMHdt76e/MUknTdHJp3zZ4pm0DvIXGgGK5DLfA2H3BTskTeDYqtcpkUl3gbAdSxc9CBXw8pQzScrK9USCBDJtVUfsE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=hpaWyRtF; 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="hpaWyRtF" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D2354C4CEEA; Tue, 4 Mar 2025 09:41:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1741081299; bh=UGeeT2+jg9AmN+yurFJkqAxGf9SX4b826fWEeFpnTxE=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=hpaWyRtFBn0RgekdpN9tGowxSYZ72BVvdNE7LJY8IEBx5zYiaRWWegDVZ8KLKizzl xAKKlfQUvh6giiWIDPin9hRBwZeNrCVKexrFgLLaSDwvWFWDpzZJC9Rz+UxofA6CsW b1VozmzOR6tQ7cTNBO7IV8SlnNlwbrxPRngo+J2I5rnaLMGVAmqJoozH8PvWHrcSv+ helenOYTUkj0nsz0r/UKUcI+PbgTUO+TBZp6fESN9QVkZ9fSYMxqSToGWcbaLhuIjd Gaz5m5dWRPXCCMASBvCiPLKsJN43na1U1jq+TCjWux6vyPLbM5befznKLuQr0NmjoR DB+RrQ+BfKIIg== From: Christian Brauner Date: Tue, 04 Mar 2025 10:41:11 +0100 Subject: [PATCH v2 11/15] selftests/pidfd: add second 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-v2-11-44fdacfaa7b7@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=1240; i=brauner@kernel.org; h=from:subject:message-id; bh=UGeeT2+jg9AmN+yurFJkqAxGf9SX4b826fWEeFpnTxE=; b=owGbwMvMwCU28Zj0gdSKO4sYT6slMaQfO7X77k5pu7LCGfllr8utvzr9yz9VX2osrvh1omTrb QWTyiNTOkpZGMS4GGTFFFkc2k3C5ZbzVGw2ytSAmcPKBDKEgYtTACbiYs7IcERo359atXDJ14fN vyaGnrlQq6KVX8hwr7t4g5BTTnOGMsP/eqEH217+vGInX8KSGvan8O++uF+fb8Y/X3x9zoKba6X DGAA= 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 | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/tools/testing/selftests/pidfd/pidfd_info_test.c b/tools/testing/selftests/pidfd/pidfd_info_test.c index cc1d3d5eba59..2a5742a2a55f 100644 --- a/tools/testing/selftests/pidfd/pidfd_info_test.c +++ b/tools/testing/selftests/pidfd/pidfd_info_test.c @@ -143,4 +143,22 @@ TEST_F(pidfd_info, sigkill_exit) ASSERT_FALSE(!!(info.mask & PIDFD_INFO_EXIT)); } +TEST_F(pidfd_info, sigkill_reaped) +{ + struct pidfd_info info = { + .mask = PIDFD_INFO_CGROUPID, + }; + + /* Process has already been reaped and PIDFD_INFO_EXIT hasn't been set. */ + ASSERT_NE(ioctl(self->child_pidfd2, PIDFD_GET_INFO, &info), 0); + ASSERT_EQ(errno, ESRCH); + + info.mask = PIDFD_INFO_CGROUPID | PIDFD_INFO_EXIT; + 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