From mboxrd@z Thu Jan 1 00:00:00 1970 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 BA68F357A23; Fri, 24 Oct 2025 10:57:29 +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=1761303449; cv=none; b=jy/+QNgQCJ+BSOVcIMXmy5JJ3hzRpnXTbHQ0R0fUUDi/HqKc/osKPw00nET5IdKKhBkYEe3f1x6fPCUIqNiU0oGtZD24aqsr4vHE3IMgZnif8RHPNRdoToH82S1H6m283gxsdznqhwgMUrj6cuNli4+nk+e0K0sJSZXVW/RW09A= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761303449; c=relaxed/simple; bh=YEySNnwHHlcAx8fWB+paH4j8S+yvwldW7xKcAutT9lM=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=Hh0XAYD+NL3uPENovZZ4bsSSy4yMY+GLtfl+L9Ln32TW9PxeCD2+FJO4/7SgMHE4P3cBNf6RFjw6aHFzMiAsUI7/ZncjYgnJ2+JGrlOngM7IvRha2IutkBzNdFAQbI0bVxQFfcRH8V8BgbYNHhK8yWNHrKNUh68bZD4BZ8UIQWk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=CyEyAjsv; 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="CyEyAjsv" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AF417C4CEF1; Fri, 24 Oct 2025 10:57:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1761303449; bh=YEySNnwHHlcAx8fWB+paH4j8S+yvwldW7xKcAutT9lM=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=CyEyAjsvDE6bSWNT9alXmGqU4mh8gU+yEmnb+hWeVEjaCVXgT8TRm2foUjlXC8RYo 3Wh3lFfRGM3CLHW1BFmRdgYomxy2377xVGVoTDMKp07v3/x/bbmAqrMpJid4q7j690 pCDUt74mBtY9n7UpwuAvji/zvJF/lKn7hnuJgMSHew+3a1ZzekqRjaQI6D3Csc3Kc9 yz2xAb8KsJganplYvkpBKjC2YU2Gu+YVFQeX+tnUCXCk4B/L2UmUb3A+7VSv8zsdu8 X74jsiqcQtGmjZ3K6Iuw9rDR2RKbScDleBi1yLKzKEoKHAz7WBa84fq22lDV2en9It tAZdJ6kyGuDiA== From: Christian Brauner Date: Fri, 24 Oct 2025 12:53:22 +0200 Subject: [PATCH v3 53/70] selftests/namespaces: first inactive namespace resurrection test Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20251024-work-namespace-nstree-listns-v3-53-b6241981b72b@kernel.org> References: <20251024-work-namespace-nstree-listns-v3-0-b6241981b72b@kernel.org> In-Reply-To: <20251024-work-namespace-nstree-listns-v3-0-b6241981b72b@kernel.org> To: linux-fsdevel@vger.kernel.org, Josef Bacik , Jeff Layton Cc: Jann Horn , Mike Yuan , =?utf-8?q?Zbigniew_J=C4=99drzejewski-Szmek?= , Lennart Poettering , Daan De Meyer , Aleksa Sarai , Amir Goldstein , Tejun Heo , Johannes Weiner , Thomas Gleixner , Alexander Viro , Jan Kara , linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, bpf@vger.kernel.org, Eric Dumazet , Jakub Kicinski , netdev@vger.kernel.org, Arnd Bergmann , Christian Brauner X-Mailer: b4 0.15-dev-96507 X-Developer-Signature: v=1; a=openpgp-sha256; l=3689; i=brauner@kernel.org; h=from:subject:message-id; bh=YEySNnwHHlcAx8fWB+paH4j8S+yvwldW7xKcAutT9lM=; b=owGbwMvMwCU28Zj0gdSKO4sYT6slMWT8jmrnlvfYdHWK0KKXaSmvzbsm7FtzS0JMv+/Mo6AE+ 2XrwhhZOkpZGMS4GGTFFFkc2k3C5ZbzVGw2ytSAmcPKBDKEgYtTACZyP57hD3eo06+rrktzkiOD MnY0uE1otpjN0nBjlVtvb2n8/t8JPowMzw/evln66Ie8cup3Q/OtWgV/ToleUH9vNuF98fE6r4x WFgA= X-Developer-Key: i=brauner@kernel.org; a=openpgp; fpr=4880B8C9BD0E5106FC070F4F7B3C391EFEA93624 Test basic SIOCGSKNS functionality. Create a socket and verify SIOCGSKNS returns the correct network namespace. Signed-off-by: Christian Brauner --- tools/testing/selftests/namespaces/.gitignore | 1 + tools/testing/selftests/namespaces/Makefile | 9 ++- .../testing/selftests/namespaces/siocgskns_test.c | 72 ++++++++++++++++++++++ 3 files changed, 81 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/namespaces/.gitignore b/tools/testing/selftests/namespaces/.gitignore index 17f9c675a60b..aeb5f2711ff6 100644 --- a/tools/testing/selftests/namespaces/.gitignore +++ b/tools/testing/selftests/namespaces/.gitignore @@ -4,3 +4,4 @@ init_ino_test ns_active_ref_test listns_test listns_permissions_test +siocgskns_test diff --git a/tools/testing/selftests/namespaces/Makefile b/tools/testing/selftests/namespaces/Makefile index 2dd22bc68b89..d456505189cd 100644 --- a/tools/testing/selftests/namespaces/Makefile +++ b/tools/testing/selftests/namespaces/Makefile @@ -2,11 +2,18 @@ CFLAGS += -Wall -O0 -g $(KHDR_INCLUDES) $(TOOLS_INCLUDES) LDLIBS += -lcap -TEST_GEN_PROGS := nsid_test file_handle_test init_ino_test ns_active_ref_test listns_test listns_permissions_test +TEST_GEN_PROGS := nsid_test \ + file_handle_test \ + init_ino_test \ + ns_active_ref_test \ + listns_test \ + listns_permissions_test \ + siocgskns_test include ../lib.mk $(OUTPUT)/ns_active_ref_test: ../filesystems/utils.c $(OUTPUT)/listns_test: ../filesystems/utils.c $(OUTPUT)/listns_permissions_test: ../filesystems/utils.c +$(OUTPUT)/siocgskns_test: ../filesystems/utils.c diff --git a/tools/testing/selftests/namespaces/siocgskns_test.c b/tools/testing/selftests/namespaces/siocgskns_test.c new file mode 100644 index 000000000000..0c9098624cd4 --- /dev/null +++ b/tools/testing/selftests/namespaces/siocgskns_test.c @@ -0,0 +1,72 @@ +// SPDX-License-Identifier: GPL-2.0 +#define _GNU_SOURCE +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "../kselftest_harness.h" +#include "../filesystems/utils.h" +#include "wrappers.h" + +#ifndef SIOCGSKNS +#define SIOCGSKNS 0x894C +#endif + +#ifndef FD_NSFS_ROOT +#define FD_NSFS_ROOT -10003 +#endif + +#ifndef FILEID_NSFS +#define FILEID_NSFS 0xf1 +#endif + +/* + * Test basic SIOCGSKNS functionality. + * Create a socket and verify SIOCGSKNS returns the correct network namespace. + */ +TEST(siocgskns_basic) +{ + int sock_fd, netns_fd, current_netns_fd; + struct stat st1, st2; + + /* Create a TCP socket */ + sock_fd = socket(AF_INET, SOCK_STREAM, 0); + ASSERT_GE(sock_fd, 0); + + /* Use SIOCGSKNS to get network namespace */ + netns_fd = ioctl(sock_fd, SIOCGSKNS); + if (netns_fd < 0) { + close(sock_fd); + if (errno == ENOTTY || errno == EINVAL) + SKIP(return, "SIOCGSKNS not supported"); + ASSERT_GE(netns_fd, 0); + } + + /* Get current network namespace */ + current_netns_fd = open("/proc/self/ns/net", O_RDONLY); + ASSERT_GE(current_netns_fd, 0); + + /* Verify they match */ + ASSERT_EQ(fstat(netns_fd, &st1), 0); + ASSERT_EQ(fstat(current_netns_fd, &st2), 0); + ASSERT_EQ(st1.st_ino, st2.st_ino); + + close(sock_fd); + close(netns_fd); + close(current_netns_fd); +} + +TEST_HARNESS_MAIN -- 2.47.3