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 X-Spam-Level: X-Spam-Status: No, score=-13.6 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,NICE_REPLY_A, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DD56BC433E2 for ; Fri, 11 Sep 2020 08:07:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 74C24208FE for ; Fri, 11 Sep 2020 08:07:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="UrNMGGOe" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725613AbgIKIHx (ORCPT ); Fri, 11 Sep 2020 04:07:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50568 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725535AbgIKIHw (ORCPT ); Fri, 11 Sep 2020 04:07:52 -0400 Received: from mail-wr1-x443.google.com (mail-wr1-x443.google.com [IPv6:2a00:1450:4864:20::443]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 773FEC061573; Fri, 11 Sep 2020 01:07:51 -0700 (PDT) Received: by mail-wr1-x443.google.com with SMTP id z4so10554688wrr.4; Fri, 11 Sep 2020 01:07:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=cc:subject:to:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=cpIlmOuvPXvfacevpi7yS3P76dKmWK43TOweVTpKkTg=; b=UrNMGGOej6UPvXEjKavT25ojVb6RamvHVvLPgfpMOzROBedFB58nQC+ZZWQTtwYex3 6xzMr5NBsSAaYyiOjo3Mtt9Lm7vnTTuXb48q+oHzG28r4xReugKnkFps+uAANGBxyaEk dRD8iy0BktwbJHPXnkWdEnk7eKawpD8skV0Aa0jzGsm4B+R63a60CuZcNk4w9fF1wakK MD4hbRudioH2YZAaOBNqXNkY+MW99H0aSfBU/5XvkQ3MmP2/eXpVL74ZvplWy04ST870 iTeejo2wErIwSal9X362YPSCtZqZ1gCMfw9pJPH2uiKFkDPuRWfMxPbu1KPG49FAtrZZ QOWA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:cc:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=cpIlmOuvPXvfacevpi7yS3P76dKmWK43TOweVTpKkTg=; b=ImCVG0yw5LNEQmO/ScaGkXgRNrGsioYjKJ6cBLRXC9LaRWkromTOQSr/AHLanmsm1G JNIot5u3WTa0i7A3xrkcOWaLeU82FZ6FGrCKHWCFKIRZCMQlFD20D+S/vzAS/x2stn86 nk5P7Ty2G8szW8IYjNTiT/ASN7fUiJBnjPxIn4nHOcAPadi/xKbXi/4LFAQ40WtKV3o7 lo/yU1iDxDcUAH/+koH06mdkwvnU98lyP2frxrBs8RxWSi7alsQC4GS05mt/90kWWlyS gcE22MDh+17eIdoxrUkDIrSU9MFeR2k0k+4vjPanvHakPH5sSARE7zdvZwRzBEizoogR FhfQ== X-Gm-Message-State: AOAM533WSoFrDBqzWlJTWHlsX9uw6iuzirJ5U7GV/jMFHtcGt/Oy9Xqx zamN17CMioQq7+8gNEb+nm+YzISFvXQ= X-Google-Smtp-Source: ABdhPJyGMlvHHrrqHyEqBSkYF2e/i+qmdeYWRd44XUztofPuulncUkJXtmpp6R/JOlk1kukAs7+QvA== X-Received: by 2002:a5d:634e:: with SMTP id b14mr766599wrw.190.1599811669916; Fri, 11 Sep 2020 01:07:49 -0700 (PDT) Received: from ?IPv6:2001:a61:2479:6801:d8fe:4132:9f23:7e8f? ([2001:a61:2479:6801:d8fe:4132:9f23:7e8f]) by smtp.gmail.com with ESMTPSA id q12sm3089885wrp.17.2020.09.11.01.07.49 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 11 Sep 2020 01:07:49 -0700 (PDT) Cc: mtk.manpages@gmail.com, linux-man@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 15/24] unix.7: Use sizeof() to get buffer size (instead of hardcoding macro name) To: Alejandro Colomar References: <20200910211344.3562-1-colomar.6.4.3@gmail.com> <20200910211344.3562-16-colomar.6.4.3@gmail.com> From: "Michael Kerrisk (man-pages)" Message-ID: Date: Fri, 11 Sep 2020 10:07:48 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20200910211344.3562-16-colomar.6.4.3@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-man-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-man@vger.kernel.org On 9/10/20 11:13 PM, Alejandro Colomar wrote: > Signed-off-by: Alejandro Colomar Thanks, Alex. Patch Applied. Cheers, Michael > --- > man7/unix.7 | 14 +++++++------- > 1 file changed, 7 insertions(+), 7 deletions(-) > > diff --git a/man7/unix.7 b/man7/unix.7 > index f61b51424..50828a5bc 100644 > --- a/man7/unix.7 > +++ b/man7/unix.7 > @@ -991,7 +991,7 @@ main(int argc, char *argv[]) > > /* Wait for next data packet. */ > > - ret = read(data_socket, buffer, BUFFER_SIZE); > + ret = read(data_socket, buffer, sizeof(buffer)); > if (ret == \-1) { > perror("read"); > exit(EXIT_FAILURE); > @@ -999,16 +999,16 @@ main(int argc, char *argv[]) > > /* Ensure buffer is 0\-terminated. */ > > - buffer[BUFFER_SIZE \- 1] = 0; > + buffer[sizeof(buffer) \- 1] = 0; > > /* Handle commands. */ > > - if (!strncmp(buffer, "DOWN", BUFFER_SIZE)) { > + if (!strncmp(buffer, "DOWN", sizeof(buffer))) { > down_flag = 1; > break; > } > > - if (!strncmp(buffer, "END", BUFFER_SIZE)) { > + if (!strncmp(buffer, "END", sizeof(buffer))) { > break; > } > > @@ -1020,7 +1020,7 @@ main(int argc, char *argv[]) > /* Send result. */ > > sprintf(buffer, "%d", result); > - ret = write(data_socket, buffer, BUFFER_SIZE); > + ret = write(data_socket, buffer, sizeof(buffer)); > if (ret == \-1) { > perror("write"); > exit(EXIT_FAILURE); > @@ -1116,7 +1116,7 @@ main(int argc, char *argv[]) > > /* Receive result. */ > > - ret = read(data_socket, buffer, BUFFER_SIZE); > + ret = read(data_socket, buffer, sizeof(buffer)); > if (ret == \-1) { > perror("read"); > exit(EXIT_FAILURE); > @@ -1124,7 +1124,7 @@ main(int argc, char *argv[]) > > /* Ensure buffer is 0\-terminated. */ > > - buffer[BUFFER_SIZE \- 1] = 0; > + buffer[sizeof(buffer) \- 1] = 0; > > printf("Result = %s\en", buffer); > > -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/