From patchwork Thu Aug 15 14:32:18 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Quentin Monnet X-Patchwork-Id: 1147630 X-Patchwork-Delegate: bpf@iogearbox.net Return-Path: X-Original-To: incoming-bpf@patchwork.ozlabs.org Delivered-To: patchwork-incoming-bpf@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=bpf-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=netronome.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=netronome-com.20150623.gappssmtp.com header.i=@netronome-com.20150623.gappssmtp.com header.b="TupD/Gh2"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 468TSR5Gr4z9sNm for ; Fri, 16 Aug 2019 00:32:39 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731220AbfHOOcg (ORCPT ); Thu, 15 Aug 2019 10:32:36 -0400 Received: from mail-wm1-f65.google.com ([209.85.128.65]:56012 "EHLO mail-wm1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732944AbfHOOcg (ORCPT ); Thu, 15 Aug 2019 10:32:36 -0400 Received: by mail-wm1-f65.google.com with SMTP id f72so1453718wmf.5 for ; Thu, 15 Aug 2019 07:32:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=netronome-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=JPzzk5lRmjCdOAS6zNQJ1VhVCQa5IynB25ENpGskCeY=; b=TupD/Gh2d8qyh3RllnYSH0OpkdcfRETSxHt3xZHCA12yunZqr9yvxmWuGKZ9/rhCPq JCLcpZR/MuQYpfYkzTKFxT+/jFwTcxyXOs3nIMAsfleRIp7BlNHHLMbv4ZSkcLjmMtl2 uZbnrJ9QnGcY+BLcdoytpamUQ//0CfHxjSV2ROqGHeCcC7nRN8loHTACUdt6qDlgcYHf kCXCOKRNpFXKjkZnsXlPJzhZA89e78anKQXUZXnzzz3d8zWLvr+MR/146/8SD9/YWOVs aUGHugQgDvqZY4KHw36yGVVB+iheS1oysDfp+BH1bvc7UrDlo/fAVilRT9UTQtbLJ39q n58g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=JPzzk5lRmjCdOAS6zNQJ1VhVCQa5IynB25ENpGskCeY=; b=QIN1FuO1RbGtZvFs8NBuKw9raJjGtJ1JXw6QnMtaK8GubhGUivyYM+9zAv6XMTzqub +WO/vQJzkuBq1/EU3wY9yBs9w/Gi9gWrt937QqZZetGwi9oOOCJjkUqh3MpE6GflEC71 xIpKYiabAlub3FU17sgH9eur2Gn5dE6DTf8qIlYqVbgoOplN0JEkvUJJZt+qhDQ0LOFj 1Mjba78WAAK1PzjddR2YEs2LGT4BnqipAWohPefx6YheevmgMTsULdW5uMqQiFea0pki a6zr8qmKfQXeIXYWZvtidfnPvTvjfAH00KvAATxSdR+9fWM2WhXFr7BJYF2J8T8DKmtv NbPQ== X-Gm-Message-State: APjAAAVcIyIgyNpVPD5EW4cCyitf7HwcSgH/2a7bTxZvxk21TTAYryso HIH66MlBnEcRABLROWHsR0Sck8ba2SA= X-Google-Smtp-Source: APXvYqwI9FQz5QfncZdStumoW6LrAu7+/jwRFiHcqXzZLnZOeEWkUGaCqJBs73aFI71k6s+VlZpyUA== X-Received: by 2002:a05:600c:551:: with SMTP id k17mr3102790wmc.53.1565879554404; Thu, 15 Aug 2019 07:32:34 -0700 (PDT) Received: from cbtest32.netronome.com ([217.38.71.146]) by smtp.gmail.com with ESMTPSA id a19sm8857463wra.2.2019.08.15.07.32.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 15 Aug 2019 07:32:33 -0700 (PDT) From: Quentin Monnet To: Alexei Starovoitov , Daniel Borkmann Cc: bpf@vger.kernel.org, netdev@vger.kernel.org, oss-drivers@netronome.com, Quentin Monnet Subject: [PATCH bpf 4/6] tools: bpftool: fix format string for p_err() in query_flow_dissector() Date: Thu, 15 Aug 2019 15:32:18 +0100 Message-Id: <20190815143220.4199-5-quentin.monnet@netronome.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190815143220.4199-1-quentin.monnet@netronome.com> References: <20190815143220.4199-1-quentin.monnet@netronome.com> Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org The format string passed to one call to the p_err() function in query_flow_dissector() does not match the value that should be printed, resulting in some garbage integer being printed instead of strerror(errno) if /proc/self/ns/net cannot be open. Let's fix the format string. Fixes: 7f0c57fec80f ("bpftool: show flow_dissector attachment status") Signed-off-by: Quentin Monnet Reviewed-by: Jakub Kicinski --- tools/bpf/bpftool/net.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/bpf/bpftool/net.c b/tools/bpf/bpftool/net.c index 67e99c56bc88..e3b770082a39 100644 --- a/tools/bpf/bpftool/net.c +++ b/tools/bpf/bpftool/net.c @@ -197,7 +197,7 @@ static int query_flow_dissector(struct bpf_attach_info *attach_info) fd = open("/proc/self/ns/net", O_RDONLY); if (fd < 0) { - p_err("can't open /proc/self/ns/net: %d", + p_err("can't open /proc/self/ns/net: %s", strerror(errno)); return -1; }