From patchwork Tue Mar 4 09:41:13 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christian Brauner X-Patchwork-Id: 14000339 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 E83F31FCFC1 for ; Tue, 4 Mar 2025 09:41:43 +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=1741081306; cv=none; b=plkuys8C0CLNExQiB8J8XVhAU2E8+4lVKqnAT3d9V2e/jHgMEIcf3Qg4Ql/bD3Ek3GrZMiUBPmmqw8J4iBynTTjOESW6MJfxvpfY30s8lsB7+5j0LaMbXRWxGim4LDTgJqDwCSMtGctcJhwaTnazpinnAQmvLwyef4z1BZtMB04= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741081306; c=relaxed/simple; bh=FhKNsJ55OVok6P5QTIj8iE3Kv7bGxeoGFF0N6sn7W4I=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=WsndNm+3vI8qLW0eniLWIQG87R9SRsjVBoha4o04Px8EKr/n6ytZLSXtEHcARJ/wvMpggJaGnbzy1KXjs3v/S8UmXAxszqjbWAdW/fduy+XUpLzsVk156Awrz1ce8IOiZLpm6gDu0W5Nehz/rFnrZfLfTm55plYZ0SyCpigEexg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Up4W/a3X; 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="Up4W/a3X" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DEAACC4CEE8; Tue, 4 Mar 2025 09:41:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1741081303; bh=FhKNsJ55OVok6P5QTIj8iE3Kv7bGxeoGFF0N6sn7W4I=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=Up4W/a3XSxTaBPpRfZ2BVVhIv2BGqxg1QATZ7qn0JjaMkDy8VUz+xLVwjdaGdTSvS Hr/nAetqAmTMnS6ae939ke5Oswn+VxNngy1aqIFk8Gw3jZRuBcNx3hvtkAlVzot1fZ iLH4FTQdg/W+lNcuBmuFGVHXqmpB2U2zPUuZHb9vtBD0MHYgS3rZTBRLe1tyaeQRCt 647hVxdy3VbY23VZWR22Xogf0iDt1W/9SGmK6I5R5mfnDaAx/t+hHIH+mJr4jWbal7 O23Up0qJ6PvCLxWJ0M+baD8iEGuPeHj4ZqqWmdDTfq82lcRFKZfDFY7EQA8UqklowI 37cc9OgYwNuyA== From: Christian Brauner Date: Tue, 04 Mar 2025 10:41:13 +0100 Subject: [PATCH v2 13/15] selftests/pidfd: add fourth 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-v2-13-44fdacfaa7b7@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=1235; i=brauner@kernel.org; h=from:subject:message-id; bh=FhKNsJ55OVok6P5QTIj8iE3Kv7bGxeoGFF0N6sn7W4I=; b=owGbwMvMwCU28Zj0gdSKO4sYT6slMaQfO7V7iZRzza042ZUn7BfqH4lWeflApPvpMeNl8bsVu D/EGDk+6ihlYRDjYpAVU2RxaDcJl1vOU7HZKFMDZg4rE8gQBi5OAZhIqxvDP6XJB27Wz9jzPl9b YO0u56dxd18L9zNwvmheeZZhb3Re71lGhi4ZrsakXWGh9/QCLyQznlu1fc2NWY+ea72yu1CY9// dZQ4A 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 2917e7a03b31..0d0af4c2a84d 100644 --- a/tools/testing/selftests/pidfd/pidfd_info_test.c +++ b/tools/testing/selftests/pidfd/pidfd_info_test.c @@ -177,4 +177,22 @@ TEST_F(pidfd_info, success_exit) ASSERT_FALSE(!!(info.mask & PIDFD_INFO_EXIT)); } +TEST_F(pidfd_info, success_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_pidfd4, PIDFD_GET_INFO, &info), 0); + ASSERT_EQ(errno, ESRCH); + + info.mask = PIDFD_INFO_CGROUPID | PIDFD_INFO_EXIT; + ASSERT_EQ(ioctl(self->child_pidfd4, PIDFD_GET_INFO, &info), 0); + ASSERT_FALSE(!!(info.mask & PIDFD_INFO_CREDS)); + ASSERT_TRUE(!!(info.mask & PIDFD_INFO_EXIT)); + ASSERT_TRUE(WIFEXITED(info.exit_code)); + ASSERT_EQ(WEXITSTATUS(info.exit_code), 0); +} + TEST_HARNESS_MAIN