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=-3.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED autolearn=no 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 B489BC43457 for ; Mon, 19 Oct 2020 10:27:14 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 183372225A for ; Mon, 19 Oct 2020 10:27:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Q0J/aEE8" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 183372225A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=containers-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by hemlock.osuosl.org (Postfix) with ESMTP id 75689871B4; Mon, 19 Oct 2020 10:27:13 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from hemlock.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id qXWy8HDbbwdL; Mon, 19 Oct 2020 10:27:13 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by hemlock.osuosl.org (Postfix) with ESMTP id 132B7871AC; Mon, 19 Oct 2020 10:27:13 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id EA61AC088B; Mon, 19 Oct 2020 10:27:12 +0000 (UTC) Received: from whitealder.osuosl.org (smtp1.osuosl.org [140.211.166.138]) by lists.linuxfoundation.org (Postfix) with ESMTP id 65DAAC0051 for ; Mon, 19 Oct 2020 10:27:12 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by whitealder.osuosl.org (Postfix) with ESMTP id 59EBF872A9 for ; Mon, 19 Oct 2020 10:27:12 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from whitealder.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id K9XfTaT0htYG for ; Mon, 19 Oct 2020 10:27:12 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [63.128.21.124]) by whitealder.osuosl.org (Postfix) with ESMTPS id CEDE786D53 for ; Mon, 19 Oct 2020 10:27:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1603103230; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=jFk5VbhicfU6IQL8Kp5azjg7j7zrM24dueZ68njQ5EQ=; b=Q0J/aEE89nsCSaAEvxNLfTCpsV03+mzROsbwCbfs6kLxq5OPWYBqFg3BP6LpYFJgPE0k1V CFIoWI+F4AL3+hJOtF75DPY+CGZk/sluDfKgGjy+lyP19hMqGDaniQkepL2keLxzEgkDWm yPZj52NFCwWTo0fQYp4gOamzyVLNNB8= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-456-yRWT7b4OMF2ehwEatrA4Gw-1; Mon, 19 Oct 2020 06:27:08 -0400 X-MC-Unique: yRWT7b4OMF2ehwEatrA4Gw-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 5614F1006704; Mon, 19 Oct 2020 10:27:07 +0000 (UTC) Received: from lithium.redhat.com (ovpn-115-42.ams2.redhat.com [10.36.115.42]) by smtp.corp.redhat.com (Postfix) with ESMTP id 1910350B44; Mon, 19 Oct 2020 10:27:04 +0000 (UTC) From: Giuseppe Scrivano To: linux-kernel@vger.kernel.org Subject: [PATCH v2 0/2] fs, close_range: add flag CLOSE_RANGE_CLOEXEC Date: Mon, 19 Oct 2020 12:26:52 +0200 Message-Id: <20201019102654.16642-1-gscrivan@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Cc: linux-fsdevel@vger.kernel.org, containers@lists.linux-foundation.org, linux@rasmusvillemoes.dk, viro@zeniv.linux.org.uk X-BeenThere: containers@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux Containers List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: containers-bounces@lists.linux-foundation.org Sender: "Containers" When the new flag is used, close_range will set the close-on-exec bit for the file descriptors instead of close()-ing them. It is useful for e.g. container runtimes that want to minimize the number of syscalls used after a seccomp profile is installed but want to keep some fds open until the container process is executed. v1->v2: * move close_range(..., CLOSE_RANGE_CLOEXEC) implementation to a separate function. * use bitmap_set() to set the close-on-exec bits in the bitmap. * add test with rlimit(RLIMIT_NOFILE) in place. * use "cur_max" that is already used by close_range(..., 0). Giuseppe Scrivano (2): fs, close_range: add flag CLOSE_RANGE_CLOEXEC selftests: add tests for CLOSE_RANGE_CLOEXEC fs/file.c | 44 ++++++++--- include/uapi/linux/close_range.h | 3 + .../testing/selftests/core/close_range_test.c | 74 +++++++++++++++++++ 3 files changed, 111 insertions(+), 10 deletions(-) -- 2.26.2 _______________________________________________ Containers mailing list Containers@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/containers