From mboxrd@z Thu Jan 1 00:00:00 1970 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 1188DC6FD18 for ; Wed, 19 Apr 2023 18:54:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231327AbjDSSyz (ORCPT ); Wed, 19 Apr 2023 14:54:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55600 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230253AbjDSSyv (ORCPT ); Wed, 19 Apr 2023 14:54:51 -0400 Received: from mail-wr1-x434.google.com (mail-wr1-x434.google.com [IPv6:2a00:1450:4864:20::434]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2015D44A9 for ; Wed, 19 Apr 2023 11:54:50 -0700 (PDT) Received: by mail-wr1-x434.google.com with SMTP id ffacd0b85a97d-2f46348728eso7360f8f.3 for ; Wed, 19 Apr 2023 11:54:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1681930488; x=1684522488; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=xQVi3lJE/aR4Ib99y2rm7C243w5YRpQ1SOAepjbYKAI=; b=lBoibjP2Sbx3tJsjB3ldyRpEp+cCrQndhjEhEtrBDaUY+FiFIFbk2qKNzCXGR52PMj +pq3QlhZ4b9lCLkv2TKKsvYEL3s/FzxMmjXsoJI9/VFr5ybWQbnY3cpFZqxOk8jIW1vd wbbQB9fTgLu9SIXhhKDCHUb7D5S/HV3O60JLTYtD+3opuriL/ZBntuw4JW3+E1+fpMtc AIVfOvJx1XISmOMUMNsOOlM5N6H6yWLTbRIURNgGIF4FBf2ImlKVG5tMSK2Mkz/8yD9p 8PCuYQkPRvk7t1PdcbhuSUxUxxXpgh+oWGJVHKc4rKSMuZyDEPAYFGtTl0w9qWUGF2DM 4Xdg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1681930488; x=1684522488; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=xQVi3lJE/aR4Ib99y2rm7C243w5YRpQ1SOAepjbYKAI=; b=DmPnuornomivMp2N0iGd1Hwt2ZCvvqcFMOMXJjwFpv+HkqD0VWmgEVXSaFbkH9kbMn nEkNMPMYt+QoFcDvwnH/URD5Swzy3Ex4nFRCzRHBUpOdu+7BXcdQ/4X5fZYbgjj/Vg/Q 6cyEyc0dhLLcx5jV1Aye8t25bkYMl4S/f3OCdTu23xWnVsO38pEpmtiTJz8uUGTRc1m0 9hvoFr678FD5f9wW7YeOa10WFzISSmFhNuHKgg3k1RMeocyGghDO1h4s7P0LiZ7iiYSv FHp1OCFvXMf1sDptWII0bslBS0OBdTIUKPrJywiKZpIlsN2to4AU1mg+FB9CAeyEwpIU vb8Q== X-Gm-Message-State: AAQBX9cJKCPg3C21dRM1jtuxzbxVlhnTkt8dwIkZP2edU+z9ula1m8Zh 7fIKdxXx8XRZHMECRUjPx8E= X-Google-Smtp-Source: AKy350Y0m7Yz8an5Z6mlhIn076FhZ0qaNK79Gpp38MZR7YWS9zuBsE0pGKD6Gwhkt3zdR5rIFKRgwg== X-Received: by 2002:adf:f8d1:0:b0:2f7:780e:ee0a with SMTP id f17-20020adff8d1000000b002f7780eee0amr5809274wrq.64.1681930488422; Wed, 19 Apr 2023 11:54:48 -0700 (PDT) Received: from localhost ([2a02:168:633b:1:9d6a:15a4:c7d1:a0f0]) by smtp.gmail.com with ESMTPSA id f4-20020a056000128400b002fe13ec49fasm4261528wrx.98.2023.04.19.11.54.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 Apr 2023 11:54:48 -0700 (PDT) From: =?UTF-8?q?G=C3=BCnther=20Noack?= To: Alejandro Colomar , =?UTF-8?q?Micka=C3=ABl=20Sala=C3=BCn?= Cc: linux-man@vger.kernel.org, =?UTF-8?q?G=C3=BCnther=20Noack?= Subject: [PATCH 0/4] landlock.7: Code example improvements Date: Wed, 19 Apr 2023 20:54:39 +0200 Message-Id: <20230419185443.7368-1-gnoack3000@gmail.com> X-Mailer: git-send-email 2.40.0 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-man@vger.kernel.org Various improvements as pointed out by Mickaël Salaün in https://lore.kernel.org/linux-man/5d90e3b0-1577-7efd-03b8-f94b6e50fbc1@digikod.net/ * Checking system call results differently, for consistency * Use constants for the compatibility table (I'm not very attached to the other solution) * Better wording for error message if Landlock unusable * Return instead of exit() if Landlock unusable Regarding the EOPNOTSUPP/ENOTSUP discussion, the consensus seems to be that EOPNOTSUPP is preferable, because that is the only of the two error codes that the kernel knows about. Günther Noack (4): landlock.7: Check syscall result with == -1 instead of <= 0 landlock.7: Use LANDLOCK_* constants for compatibility table landlock.7: wfix: Error message wording in code example landlock.7: Return instead of exit() if Landlock is unusable man7/landlock.7 | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) base-commit: 6693a21cf73c502f2429b4ec07698130a2be9a93 -- 2.40.0