From patchwork Tue Mar 4 09:41:12 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christian Brauner X-Patchwork-Id: 14000338 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 8EA811FCF7C for ; Tue, 4 Mar 2025 09:41:41 +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=1741081301; cv=none; b=OSOxizzSygZ47zdwfkl4366034oipqxI1gwClIarnaq2KzhvXPmmt0Gna5uTIPnnSyRevy/ttLscLSc5prwdgX0F7vAnTARI/SeI3ZaegxaGbJNpPJc0i9QSnwIhImF2MZJslYd0N4H/YY9FaPRZU6TjSZYDCIkRIfISg51YOLE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741081301; c=relaxed/simple; bh=hJe53uv68cH4hf2dDpYw68f12OpI2dT1XrSeuwL+Mno=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=PfRQM2VGA0PeCHYcTEGkvM8BIoXh4mk5ClHiNRRiiD38URf0Z5YzjUlEBopWgfaqR4nbqr+bz8gzQPjUlLVKXqcuAaPEAf2hzbaso+A2oba4LrQG70Iu2roMvgicq+pxfphCiYUZH91HvvzDVwaL25FpIwcSgk9QQArjE4XA9Vk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=SfMqxlFk; 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="SfMqxlFk" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DEBCBC4CEE9; Tue, 4 Mar 2025 09:41:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1741081301; bh=hJe53uv68cH4hf2dDpYw68f12OpI2dT1XrSeuwL+Mno=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=SfMqxlFkRVzBLVHbyPUBovGb09kZO9mdYHYqaSSp57JwekPYoYykBrn2vO0nPWOLh 2O3wZMP3rDnHl9LLD2s8RF371aok8qzWrlOdiskdj13xLJ1gq2YX1bSSzrKSNSN4cy 9jJahG/ayhWz1lmFak5WjIBu6FpUCeEDTupsSGCX/T4lJaZrpEQAnKEBmcweb9Gqzg Too0zw1IuHnp1uGzoOVkdFNDEX08ry/Sx/afPgPphu4a2oulPCCN4E4eff5o3oqUbZ HncKd0755u/LQsCkElBvCh1e8NK5RyxmrYbZaX1IGu+bSXoZU1AyOaPmjdVRBRfvN/ Ig/HoLkNilI/w== From: Christian Brauner Date: Tue, 04 Mar 2025 10:41:12 +0100 Subject: [PATCH v2 12/15] 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: <20250304-work-pidfs-kill_on_last_close-v2-12-44fdacfaa7b7@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=1192; i=brauner@kernel.org; h=from:subject:message-id; bh=hJe53uv68cH4hf2dDpYw68f12OpI2dT1XrSeuwL+Mno=; b=owGbwMvMwCU28Zj0gdSKO4sYT6slMaQfO7X7mkF0hUjRljvvNx0MntXnoPFp5WaLlwI26rtvT Zm7ojN4TUcpC4MYF4OsmCKLQ7tJuNxynorNRpkaMHNYmUCGMHBxCsBE7s5gZDiw4lX23u8PLaSq dt53Wl9VyLl5cef2JKUQ/qPp5uG/VW0Z/hmqLt6R8fziO5X5qwO28696K7Fcotmypzv1pNGp6Tz 3n7EBAA== 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 | 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