From patchwork Wed Mar 5 10:08:21 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christian Brauner X-Patchwork-Id: 14002279 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 492CE86340 for ; Wed, 5 Mar 2025 10:08:49 +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=1741169330; cv=none; b=mcBy+VFxRULUf2U6I6C/NKXwXAZvxGg4jjj24zRVD9xRwwWS0RxTIvRRgdKkJu/0trnLJvO81EXr4T7VF6N93kMSfnHf0DzRKLrre6RYjcGZ7PDl6gi3aGgLt4e+R6Dy3BN0bPAAvUyPzhE14cr5RwZrK1Q64bVXZ67waJic3Gc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741169330; c=relaxed/simple; bh=uwTb2pvynGcEgNzKA2n7t8TdmNS33iMLyCP94yRdyUo=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=u4Lc8MlRfqVni95WZqIB7itFa2UvSFe6fpr+KQAwuJqyGyysd5slWzHuLQOMvgu77h936MakkAO5Ha6T4v5MVBBDAEl1TOY8bJ7g0w1kYd+5+TaKlibC8DIJ/UKskvdbsT16y2qxYpDRuKeQD/EUj/QDLDHmrUJfnu1C5ufTVsY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=DtNt2sXy; 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="DtNt2sXy" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1D224C4CEEC; Wed, 5 Mar 2025 10:08:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1741169329; bh=uwTb2pvynGcEgNzKA2n7t8TdmNS33iMLyCP94yRdyUo=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=DtNt2sXyLOBOh7XfDsBrSr5C9neJThwBY9xcVLyq/QV218UjV5q8E8YDoz9AzTCMU qBtnLYMrdkOWxHGLyH0YQPGS42jytRpRzAD1vpQwLgu1oO5JUobfc8MmwuMND5de4u zYepzVbnz/ko0CVJRSwqOQ1uB6REn2+6XAt8qn1GQ+JPfHW+QmHTDhIeQ9lxMuLR7e 3zb67M9/v3AwEUW3eo37O8wTy82Ew69mekIuGlTLw+NxOhmUGCW2+kH0n4sxH7wrIy PdoL0ymnKGjEuCYrdjLyOd6LYfygf1e9OqIHlxXRSk2w2OUgePw91ms57UZIAxTSql pOpcGoLB9PiLA== From: Christian Brauner Date: Wed, 05 Mar 2025 11:08:21 +0100 Subject: [PATCH v3 11/16] 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: <20250305-work-pidfs-kill_on_last_close-v3-11-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=1342; i=brauner@kernel.org; h=from:subject:message-id; bh=uwTb2pvynGcEgNzKA2n7t8TdmNS33iMLyCP94yRdyUo=; b=owGbwMvMwCU28Zj0gdSKO4sYT6slMaSfUJqh27L3aINRrPZNuwlPNy7svDY3S7TxP9+EU5Py5 LJ3Zbje6ShlYRDjYpAVU2RxaDcJl1vOU7HZKFMDZg4rE8gQBi5OAZiIXRsjw7qj0+4KFL7cY9Ia y3m2q2ymf1UYR3fVuujvpSIc075uNmH4n59vbnGVoUtAL/Ewk9O9T2bS2t02/qzXG1zFDor/PhX KBQA= 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-v2-11-44fdacfaa7b7@kernel.org 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