From patchwork Sat Aug 27 11:12:14 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiu Jianfeng X-Patchwork-Id: 12956976 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E817FC64991 for ; Sat, 27 Aug 2022 11:16:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345259AbiH0LQF (ORCPT ); Sat, 27 Aug 2022 07:16:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47688 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245071AbiH0LQB (ORCPT ); Sat, 27 Aug 2022 07:16:01 -0400 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2391222BD5; Sat, 27 Aug 2022 04:15:56 -0700 (PDT) Received: from dggpeml500023.china.huawei.com (unknown [172.30.72.55]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4MFDZC5GRdzlWWl; Sat, 27 Aug 2022 19:12:35 +0800 (CST) Received: from ubuntu1804.huawei.com (10.67.174.58) by dggpeml500023.china.huawei.com (7.185.36.114) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Sat, 27 Aug 2022 19:15:54 +0800 From: Xiu Jianfeng To: , , , , , CC: , , , Subject: [PATCH -next v2 5/6] landlock/samples: add chmod and chown support Date: Sat, 27 Aug 2022 19:12:14 +0800 Message-ID: <20220827111215.131442-6-xiujianfeng@huawei.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220827111215.131442-1-xiujianfeng@huawei.com> References: <20220827111215.131442-1-xiujianfeng@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.67.174.58] X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) To dggpeml500023.china.huawei.com (7.185.36.114) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org update landlock sample to support the new flags LANDLOCK_ACCESS_FS_{CHMOD, CHGRP} Signed-off-by: Xiu Jianfeng --- samples/landlock/sandboxer.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/samples/landlock/sandboxer.c b/samples/landlock/sandboxer.c index 771b6b10d519..639ec39ebd0a 100644 --- a/samples/landlock/sandboxer.c +++ b/samples/landlock/sandboxer.c @@ -77,7 +77,9 @@ static int parse_path(char *env_path, const char ***const path_list) LANDLOCK_ACCESS_FS_EXECUTE | \ LANDLOCK_ACCESS_FS_WRITE_FILE | \ LANDLOCK_ACCESS_FS_READ_FILE | \ - LANDLOCK_ACCESS_FS_TRUNCATE) + LANDLOCK_ACCESS_FS_TRUNCATE | \ + LANDLOCK_ACCESS_FS_CHMOD | \ + LANDLOCK_ACCESS_FS_CHGRP) /* clang-format on */ @@ -162,7 +164,9 @@ static int populate_ruleset(const char *const env_var, const int ruleset_fd, LANDLOCK_ACCESS_FS_MAKE_BLOCK | \ LANDLOCK_ACCESS_FS_MAKE_SYM | \ LANDLOCK_ACCESS_FS_REFER | \ - LANDLOCK_ACCESS_FS_TRUNCATE) + LANDLOCK_ACCESS_FS_TRUNCATE | \ + LANDLOCK_ACCESS_FS_CHMOD | \ + LANDLOCK_ACCESS_FS_CHGRP) /* clang-format on */ @@ -233,6 +237,11 @@ int main(const int argc, char *const argv[], char *const *const envp) case 2: /* Removes LANDLOCK_ACCESS_FS_TRUNCATE for ABI < 3 */ ruleset_attr.handled_access_fs &= ~LANDLOCK_ACCESS_FS_TRUNCATE; + __attribute__((fallthrough)); + case 3: + /* Removes LANDLOCK_ACCESS_FS_{CHMOD, CHGRP} for ABI < 4 */ + ruleset_attr.handled_access_fs &= ~(LANDLOCK_ACCESS_FS_CHMOD | + LANDLOCK_ACCESS_FS_CHGRP); } access_fs_ro &= ruleset_attr.handled_access_fs; access_fs_rw &= ruleset_attr.handled_access_fs;