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[209.132.180.67]) by mx.google.com with ESMTP id c1si6120237pla.122.2019.05.16.14.43.20; Thu, 16 May 2019 14:43:36 -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; dkim=pass header.i=@gmail.com header.s=20161025 header.b=p0u9IeHa; 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; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728020AbfEPS6B (ORCPT + 99 others); Thu, 16 May 2019 14:58:01 -0400 Received: from mail-wr1-f68.google.com ([209.85.221.68]:42309 "EHLO mail-wr1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727998AbfEPS57 (ORCPT ); Thu, 16 May 2019 14:57:59 -0400 Received: by mail-wr1-f68.google.com with SMTP id l2so4526513wrb.9; Thu, 16 May 2019 11:57:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:mime-version:content-disposition :user-agent; bh=4Mod0w+FblAyMcQEjnQi2LEp2GvI/rgCxO2rN911/JQ=; b=p0u9IeHaeL0IXuaE2OqW0lMXODaKkgs4K4WIJeoZq5PwlAkEW8iYzmS+IGQJJdCLrB Ogtl4LZYRKZifbaedBOZG+NoPgPuyndNkxOgNVWrCkQQQ3NdttqAW3CQlS4z1krFyKPU HQRSShHBtvYrmd7aGBDq1Phw3vEk4jBEWwTsBUfpH4KrZX0LGTOH4GiMT37p3smtiCZC EBSLYXOL35i0Nqv1veRvkze3B9z9HM5OWXFQnlaEvFS2fBpqYeES26jiW85PfIIVLftj /fumhtoC016Ox4D5ynOnogCLC3BWdCRR+Bj5XKrmcFmVKKacUjgEuo5BjUuRrLsXhYFV 5XMA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:mime-version :content-disposition:user-agent; bh=4Mod0w+FblAyMcQEjnQi2LEp2GvI/rgCxO2rN911/JQ=; b=JoiPjXkb9KiODCsrez15uio3T4MPtIw9+ewDIV1RUSi1KIj8938LMyC+Nd9KjLLX1N 1D//sh+HvQHext2WXQgnicgGp450XW4RCMeF7N1KgJNZzQxWaAc3r9QcfajYR+dmEvq2 G2Pda2gy5czBdlv/Jc98ibyKAnOqX2HrunKWBpEsC/9KFRYoDPw8EWbxxGPqywlO18f/ 2SYySnOrlUKfBgbTmqkXBCmwL64Ioq5ASUHoA+bUZdhSpA+gqEezNwC1Dt45uqIbDrn/ 1CaoKk/jPu08fpeTmk057ZwVRiFNfHzPSZMBieENxmV+DEYhnjaQcjLP5efdHOTZxkqU isMA== X-Gm-Message-State: APjAAAUrlOJuDYp4g9nOtPaYl08EPf00ZxwSKbTb4AesSbOe1a4scEFv +Endmwj+ULm4ruSHpHKH8g== X-Received: by 2002:adf:b6a5:: with SMTP id j37mr27592391wre.4.1558033078012; Thu, 16 May 2019 11:57:58 -0700 (PDT) Received: from avx2 ([46.53.251.158]) by smtp.gmail.com with ESMTPSA id a5sm5334361wrt.10.2019.05.16.11.57.56 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 16 May 2019 11:57:57 -0700 (PDT) Date: Thu, 16 May 2019 21:57:54 +0300 From: Alexey Dobriyan To: viro@zeniv.linux.org.uk Cc: linux-kernel@vger.kernel.org, linux-abi@vger.kernel.org, christian@brauner.io, dhowells@redhat.com Subject: Re: [PATCH 0/4] uapi, vfs: Change the mount API UAPI [ver #2] Message-ID: <20190516185754.GA23402@avx2> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > unshare(CLONE_FILES); > /* we don't want anything past stderr here */ > close_range(3, ~0U); > execve(....); Yes please. nextfd(2) https://lkml.org/lkml/2012/4/1/71 fdmap(2) https://marc.info/?t=150628366900006&r=1&w=4 I like fdmap more.