Received: by 2002:ac0:a591:0:0:0:0:0 with SMTP id m17-v6csp227713imm; Wed, 4 Jul 2018 22:25:35 -0700 (PDT) X-Google-Smtp-Source: AAOMgpeqSn5AHPlh6jri3z7iu7HZPXmTldJ3Vika2CG/fFeBCkdrxAgV9GyFuMVcqrcx7Wk5A70Z X-Received: by 2002:a17:902:8206:: with SMTP id x6-v6mr4612330pln.220.1530768335427; Wed, 04 Jul 2018 22:25:35 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1530768335; cv=none; d=google.com; s=arc-20160816; b=ix6UDUKCqnpwxcRgSEgcgNlZk2xRHbcj9Ta7YeQEKwJ/VvuZk+iSI79eaNaGvmQf4p NzH9/IhuJUijfgxOkbLxHs6w4fHtJnrdbagGxVMixjznlOby7PAIxelk46ITruxciplw qa4shiiZ2X8An1lM0EXK5ovGKnQC5KR/X3wyKl9UA54uSXlOJdBXN13R0L88QpQxHZx5 3hkmcrCFuO9ybwkMEpjhE4Dfka2wD3++SEgnA2x0UPV7Cd3tE7KpcfX0n2/5pDnPtOz7 +vwhqZvdaojKBlIevjfEAblIx3CDOansSpfL9oMTq0ouH5EVozPZS+6SEGHQvNAVJ5tx DSTw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:from:subject:cc:to:message-id:date :arc-authentication-results; bh=JNQAUMrUTfPjXZktHyi3ELbkyqb+IQD0zSpmX1KFK5o=; b=dZeQTeckfxqfkTzVOWSGJXyngZ+ry/yrdP87rcQfvu1ewcGNJ8lRdXzhai433hNtQ/ FBBPOJOmc8U1lEqYiocspiWHjkHEICILFIw68UF21EbFyRLGOdWGhDaMW9JssZbzPVgD Us22ip7lafAJKHDMoD8M+Ce6RFZljjTkLBGZTGK3+qMI0G9oHdrwIo0euuwsZ577PXQT QlY+HamVVlvFtkMcrKs8UMBtLKrjkJthuUa6l1n6hbrol768yiFqehHMBbSamlYJoI3f C2AQr1kAm4ipNRJd5e0QCLMuX81BejWFYa8Jj9rNJ1KQr8s0mmW4XoT0enoToqouWLhn Qa6A== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id d37-v6si5110535plb.481.2018.07.04.22.25.21; Wed, 04 Jul 2018 22:25:35 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753395AbeGEFYR (ORCPT + 99 others); Thu, 5 Jul 2018 01:24:17 -0400 Received: from shards.monkeyblade.net ([23.128.96.9]:50740 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751746AbeGEFYP (ORCPT ); Thu, 5 Jul 2018 01:24:15 -0400 Received: from localhost (unknown [211.196.191.92]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) (Authenticated sender: davem-davemloft) by shards.monkeyblade.net (Postfix) with ESMTPSA id 10A8C108CE7DA; Wed, 4 Jul 2018 22:24:13 -0700 (PDT) Date: Thu, 05 Jul 2018 14:24:12 +0900 (KST) Message-Id: <20180705.142412.238281898262839575.davem@davemloft.net> To: treeze.taeung@gmail.com Cc: ast@kernel.org, daniel@iogearbox.net, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, qinteng@fb.com Subject: Re: [PATCH v2 2/4] samples/bpf: Check the result of system() From: David Miller In-Reply-To: <20180704133639.11855-3-treeze.taeung@gmail.com> References: <20180704133639.11855-1-treeze.taeung@gmail.com> <20180704133639.11855-3-treeze.taeung@gmail.com> X-Mailer: Mew version 6.7 on Emacs 26 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Text/Plain; charset=iso-8859-7 Content-Transfer-Encoding: base64 X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Wed, 04 Jul 2018 22:24:15 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org RnJvbTogVGFldW5nIFNvbmcgPHRyZWV6ZS50YWV1bmdAZ21haWwuY29tPg0KRGF0ZTogV2VkLCAg NCBKdWwgMjAxOCAyMjozNjozNyArMDkwMA0KDQo+IFRvIGF2b2lkIHRoZSBiZWxvdyBidWlsZCB3 YXJuaW5nIG1lc3NhZ2UsDQo+IHVzZSBuZXcgZ2VuZXJhdGVfbG9hZCgpIGNoZWNraW5nIHRoZSBy ZXR1cm4gdmFsdWUuDQo+IA0KPiAgIGlnbm9yaW5nIHJldHVybiB2YWx1ZSBvZiChc3lzdGVtoiwg ZGVjbGFyZWQgd2l0aCBhdHRyaWJ1dGUgd2Fybl91bnVzZWRfcmVzdWx0DQo+IA0KPiBBbmQgaXQg YWxzbyByZWZhY3RvcnMgdGhlIGR1cGxpY2F0ZSBjb2RlIG9mIGJvdGgNCj4gdGVzdF9wZXJmX2V2 ZW50X2FsbF9jcHUoKSBhbmQgdGVzdF9wZXJmX2V2ZW50X3Rhc2soKQ0KPiANCj4gQ2M6IFRlbmcg UWluIDxxaW50ZW5nQGZiLmNvbT4NCj4gU2lnbmVkLW9mZi1ieTogVGFldW5nIFNvbmcgPHRyZWV6 ZS50YWV1bmdAZ21haWwuY29tPg0KDQpBY2tlZC1ieTogRGF2aWQgUy4gTWlsbGVyIDxkYXZlbUBk YXZlbWxvZnQubmV0Pg0K