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[23.128.96.18]) by mx.google.com with ESMTP id bu15si1034153edb.129.2020.04.23.05.38.21; Thu, 23 Apr 2020 05:38:47 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728235AbgDWMgB (ORCPT + 99 others); Thu, 23 Apr 2020 08:36:01 -0400 Received: from esgaroth.petrovitsch.at ([78.47.184.11]:3302 "EHLO esgaroth.tuxoid.at" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726090AbgDWMgB (ORCPT ); Thu, 23 Apr 2020 08:36:01 -0400 Received: from [10.68.100.236] (h10-gesig.woeg.acw.at [217.116.178.11] (may be forged)) (authenticated bits=0) by esgaroth.tuxoid.at (8.15.2/8.15.2) with ESMTPSA id 03NCY9Ht015917 (version=TLSv1 cipher=DHE-RSA-AES128-SHA bits=128 verify=NO); Thu, 23 Apr 2020 14:34:10 +0200 Subject: Re: [PATCH 1/4] fs: Implement close-on-fork To: David Laight , "Karstens, Nate" , Matthew Wilcox Cc: Alexander Viro , Jeff Layton , "J. Bruce Fields" , Arnd Bergmann , Richard Henderson , Ivan Kokshaysky , Matt Turner , "James E.J. Bottomley" , Helge Deller , "David S. Miller" , Jakub Kicinski , "linux-fsdevel@vger.kernel.org" , "linux-arch@vger.kernel.org" , "linux-alpha@vger.kernel.org" , "linux-parisc@vger.kernel.org" , "sparclinux@vger.kernel.org" , "netdev@vger.kernel.org" , "linux-kernel@vger.kernel.org" , Changli Gao References: <20200420071548.62112-1-nate.karstens@garmin.com> <20200420071548.62112-2-nate.karstens@garmin.com> <20200422154356.GU5820@bombadil.infradead.org> <6ed7bd08892b4311b70636658321904f@garmin.com> <97f05204-a27c-7cc8-429a-edcf6eebaa11@petrovitsch.priv.at> <337320db094d4426a621858fa0f6d7fd@AcuMS.aculab.com> From: Bernd Petrovitsch X-Pep-Version: 2.0 Message-ID: Date: Thu, 23 Apr 2020 12:34:09 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 MIME-Version: 1.0 In-Reply-To: <337320db094d4426a621858fa0f6d7fd@AcuMS.aculab.com> Content-Type: multipart/mixed; boundary="------------985EBFE9F348F8C36FCBAAF1" Content-Language: en-US X-DCC-wuwien-Metrics: esgaroth.tuxoid.at 1290; Body=22 Fuz1=22 Fuz2=22 X-Virus-Scanned: clamav-milter 0.97 at esgaroth.tuxoid.at X-Virus-Status: Clean X-Spam-Status: No, score=-1.0 required=5.0 tests=ALL_TRUSTED,AWL autolearn=unavailable version=3.3.1 X-Spam-Report: * -1.0 ALL_TRUSTED Passed through trusted hosts only via SMTP * 0.0 AWL AWL: Adjusted score from AWL reputation of From: address X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on esgaroth.tuxoid.at Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is a multi-part message in MIME format. --------------985EBFE9F348F8C36FCBAAF1 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Hi all! On 22/04/2020 16:55, David Laight wrote: > From: Bernd Petrovitsch >> Sent: 22 April 2020 17:32 > ... >> Apart from that, system() is a PITA even on >> single/non-threaded apps. >=20 > Not only that, it is bloody dangerous because (typically) > shell is doing post substitution syntax analysis. I actually meant exactly that with PITA;-) > If you need to run an external process you need to generate > an arv[] array containing the parameters. FullACK. That is usually similar trivial ... 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