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 8CF1CC433F5 for ; Tue, 23 Nov 2021 11:07:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234012AbhKWLKP (ORCPT ); Tue, 23 Nov 2021 06:10:15 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43940 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233462AbhKWLKO (ORCPT ); Tue, 23 Nov 2021 06:10:14 -0500 Received: from mail-wr1-x433.google.com (mail-wr1-x433.google.com [IPv6:2a00:1450:4864:20::433]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EC301C061574 for ; Tue, 23 Nov 2021 03:07:06 -0800 (PST) Received: by mail-wr1-x433.google.com with SMTP id a18so1708315wrn.6 for ; Tue, 23 Nov 2021 03:07:06 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=message-id:date:mime-version:user-agent:subject:content-language:to :cc:references:from:in-reply-to:content-transfer-encoding; bh=IGqsGytO9zyyEmX6jRMRs46pMylOeOs2lL9478wK6fc=; b=DTrJrRXE6cjO/WrxlZoa3ZhwG+vqp3caDBoKp0oCJAJlNsTOPUFTBD+b3eE/XZk6ck XVFBhrU+fyAlc1ue+ff4wPCH2x7UJdDxo7PzVSDO/RHmECwZ4GhCBhR/uhqJQjruse2d emFYb7HBZCxgLN2h49kXXe2+Ja57CkkcsQf/qzYRcH5U76BjAJSks/qJp2L3PTCZFn0l KeIUqVZusn1hOi7K+ciNiZ23Pegm7ItiitCbsPKnSmjZiku/XkFGnXTsNmdOk9R0WjjA joLxyE6CYqMaSZPKlxOgsbi0nzPkcgmJCZZ7+Y++oVNXk1yyiZSZnzwEBM2AjaiQF8td nMAg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:to:cc:references:from:in-reply-to :content-transfer-encoding; bh=IGqsGytO9zyyEmX6jRMRs46pMylOeOs2lL9478wK6fc=; b=yQ60DbMIciGHcKBtqD2B1DN4JOMy38tUhJWAiEmN77KmsjaT0ynI/57iuJJOq4BDEf VrdlYybNYu3VxI5+CJBiFoGSrLHMNzoJmc42Eq4G9tHrle5a56eQ+6yoH/s43jFB0eir 7Lh0W27rbZ1ogS7A/o29ItTlYVZ56hS2fKixwU+VHHWwbkFmAvPGmRAc+CPpy3CHyQi7 rQ4kHjjEtvGdT/0EPEKV0Qu9Pxkdex+M/nvdHXmU78IaG9cVWAyTfzBAJt4ElrFbgw+G Rig9SoGv8V//Qt9enJ7RlEUCiUoJtRwLihcTjysl6C0NNrPQto+Rf/Hfsko5lO5794IE EoCw== X-Gm-Message-State: AOAM532OI2tFw6z67xG15/ytTf6d/Us9UNPYF2i/oTxoZelLJByHGrLh k0WL70+POYWp5aEUc7YPw64= X-Google-Smtp-Source: ABdhPJzyz3tcSz5loik07uTlXXHXAhm5avdh2Q6InJ1OCGroMkvbBoepgxMNixGI50aD18LQUP6MHA== X-Received: by 2002:a5d:424c:: with SMTP id s12mr5947703wrr.370.1637665625520; Tue, 23 Nov 2021 03:07:05 -0800 (PST) Received: from [10.168.10.170] ([170.253.36.171]) by smtp.gmail.com with ESMTPSA id o10sm14425038wri.15.2021.11.23.03.07.04 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 23 Nov 2021 03:07:05 -0800 (PST) Message-ID: Date: Tue, 23 Nov 2021 12:07:03 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.3.0 Subject: Re: [PATCH v2] init_module.2: Add ETXTBSY error for finit_module Content-Language: en-US To: Yang Xu Cc: linux-man@vger.kernel.org, mtk.manpages@gmail.com References: <4a08d1e1-4bed-2428-e29f-8b7cb37294b4@gmail.com> <1637629149-2255-1-git-send-email-xuyang2018.jy@fujitsu.com> From: "Alejandro Colomar (man-pages)" In-Reply-To: <1637629149-2255-1-git-send-email-xuyang2018.jy@fujitsu.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-man@vger.kernel.org Hi Yang, On 11/23/21 01:59, Yang Xu wrote: > Since kernel commit[1], finit_module fails with ETXTBSY error if fd has write permission. > Since kernel commit[2], finit_module fails with EBADF error if fd doesn't have read permission. > > So we can use read-write permission to trigger ETXTBSY error all the time since linux 4.7. > > [1]https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=39d637af > [2]https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=032146cd > > Signed-off-by: Yang Xu Patch applied. Thanks, Alex > --- > man2/init_module.2 | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/man2/init_module.2 b/man2/init_module.2 > index aac0c6631..77cd8c4a6 100644 > --- a/man2/init_module.2 > +++ b/man2/init_module.2 > @@ -242,6 +242,12 @@ is invalid. > .B ENOEXEC > .I fd > does not refer to an open file. > +.TP > +.BR ETXTBSY " (since Linux 4.7)" > +.\" commit 39d637af5aa7577f655c58b9e55587566c63a0af > +The file referred to by > +.I fd > +is opened for read-write. > .PP > In addition to the above errors, if the module's > .I init > -- Alejandro Colomar Linux man-pages comaintainer; http://www.kernel.org/doc/man-pages/