From patchwork Wed Mar 5 10:08:23 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christian Brauner X-Patchwork-Id: 14002281 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 7AFF22063DA for ; Wed, 5 Mar 2025 10:08:54 +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=1741169334; cv=none; b=NguLSRrnHAeR1OSohmD5wmRgovsA8ELfF9xKAosLrFeRni1xhqFZiJlcGYVDbvsmOaw7Ozx03IDLEVq3HjI7EtD1YKHFaYg3576QgV4cPp8YjK/IVNqk+1Qp1ta/aYnjdtq4+h50AequC87Sti4iaWCG6P5lL6n+ukHonRu5GP8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741169334; c=relaxed/simple; bh=wwARZbNS6jnmacvDGKl5nDtXqnIvAP/pwPRnxTqY0WE=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=TUZxuxNCJSrkR4vfKLDnVK+x8n9mv6+2A48TPTvdIrDheVKpSmPsXZ18leecoLFNrU4WLQ7Ai1stS5MVbWQNtgV3OhOc7Az+K9mJYc/Lxwr6ObJq7QTdltViVZ2s+S19/6ItG1PVS8KelLD4HsZs87olf7sYe3HJ3BGjLvPpR8g= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=czVwMHlZ; 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="czVwMHlZ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 62887C4CEE9; Wed, 5 Mar 2025 10:08:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1741169334; bh=wwARZbNS6jnmacvDGKl5nDtXqnIvAP/pwPRnxTqY0WE=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=czVwMHlZumCHlwyJ5jayW1mSDkEu8umYrkmDRSVpYwmKk/QS3Cwpc2xhYVNPP1xw5 8B6TrJ+JKSIMK3g+UEtw99uNMDDqHLJMdmPrX0GKh9QSZRFyiRLfI4VQr32eHhbymF NC4HaB40aS+p5Te2cdlwpb2FSaz6xr3gT+r3146JnqQwnjEk42J1rH9brGl8uG76CA 2eEZn46i5BMdPqMke9FcQk73QupHZbldpRzoU61MBXieCDVbpEgCNRgxPS14wBmr7m XCrGm8GNo8+DDzlxSKbh7UOqResj/XGyq9vVoK1EQETVYzhQuRbtcF7n9r8jfugYBj 99dBGY2RXTdMw== From: Christian Brauner Date: Wed, 05 Mar 2025 11:08:23 +0100 Subject: [PATCH v3 13/16] 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: <20250305-work-pidfs-kill_on_last_close-v3-13-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=1337; i=brauner@kernel.org; h=from:subject:message-id; bh=wwARZbNS6jnmacvDGKl5nDtXqnIvAP/pwPRnxTqY0WE=; b=owGbwMvMwCU28Zj0gdSKO4sYT6slMaSfUJqx//nJm9ybzvsaO2Rmut2822PAzHJhrYJmjZtET jrH/3itjlIWBjEuBlkxRRaHdpNwueU8FZuNMjVg5rAygQxh4OIUgIn0VTH8z6heNDlEx89AQVLl ruKN0Ev9d5oObl4Q822HgarWxbdR9xj+V7LtTws8uJh9yRqVkIK2zS/Di6Yf8r0WPi++3yfbPcq GFQA= 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-v2-13-44fdacfaa7b7@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 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