From nobody Mon Feb 9 09:52:45 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1620856356; cv=none; d=zohomail.com; s=zohoarc; b=W1cvh/TywZyemJ7hvqwDmcW8aOGTDtYuSXRAUWqYvcgTXjFaBQDabcn/SGZOSrHPYerURIasNTdd5IAxqvxARLwSG8qvXXzHa1VpJhf2+WZs697K4edXdZTiZ5EV418eOWnGN+LM8n8HKIf1mzK3g8xJQzyfOJw4HvOvUe3Q61s= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1620856356; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=Nsge9hZ9d41TehIGTBqpE3cG89Y7dT1ymp6CQUptFp4=; b=gXrFPIL2s5HkTWcCmUvcYlZ3ktNINNBtiSMr+ltItIuGIUD8PrFsko0QczKU7s1eK2+YYt+nomT87X+897+6Gpn2CvpGknG6Swewz8aiZvisMZku37zKpZUcrX0xVyl/tpnmbNrB4ag0NaTIBhqJl5Yf2P0l4UF+bKnUsBOlAGk= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1620856356374890.8934203077729; Wed, 12 May 2021 14:52:36 -0700 (PDT) Received: from localhost ([::1]:45194 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lgwmR-0004Zz-Bb for importer@patchew.org; Wed, 12 May 2021 17:52:35 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:35832) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lgwhD-0000yn-BI for qemu-devel@nongnu.org; Wed, 12 May 2021 17:47:11 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:58635) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lgwh3-0007lh-Bi for qemu-devel@nongnu.org; Wed, 12 May 2021 17:47:11 -0400 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-499-EiSPTf91MiOoIZvg2d6qQg-1; Wed, 12 May 2021 17:46:49 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 0DD68FC8C; Wed, 12 May 2021 21:46:48 +0000 (UTC) Received: from scv.redhat.com (ovpn-117-64.rdu2.redhat.com [10.10.117.64]) by smtp.corp.redhat.com (Postfix) with ESMTP id 02BC05D6AC; Wed, 12 May 2021 21:46:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1620856019; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Nsge9hZ9d41TehIGTBqpE3cG89Y7dT1ymp6CQUptFp4=; b=hbJ3Yc9yfwvdqXV7HdbtIwBqYLut06+i6ARk74gU2es1CAaTQf/mi7Gny6MG+vvrEixz91 /a+KlZRFoEjHBHSLxUaraWFLs6hww/vVUpkb0e4GPsIJ+QpxGtcqC1qUrE9nYRRYX8Edoc Gdfkfp8Qx0qy0hL6Ak6yz0YNhU+jBd0= X-MC-Unique: EiSPTf91MiOoIZvg2d6qQg-1 From: John Snow To: qemu-devel@nongnu.org Subject: [PATCH 02/10] python/machine: use subprocess.DEVNULL instead of open(os.path.devnull) Date: Wed, 12 May 2021 17:46:34 -0400 Message-Id: <20210512214642.2803189-3-jsnow@redhat.com> In-Reply-To: <20210512214642.2803189-1-jsnow@redhat.com> References: <20210512214642.2803189-1-jsnow@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=jsnow@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=216.205.24.124; envelope-from=jsnow@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -34 X-Spam_score: -3.5 X-Spam_bar: --- X-Spam_report: (-3.5 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.7, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , Eduardo Habkost , qemu-block@nongnu.org, Max Reitz , Cleber Rosa , John Snow Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" One less file resource to manage, and it helps quiet some pylint >=3D 2.8.0 warnings about not using a with-context manager for the open call. Signed-off-by: John Snow Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- python/qemu/machine.py | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/python/qemu/machine.py b/python/qemu/machine.py index 6e44bda337e..41f51bd27d0 100644 --- a/python/qemu/machine.py +++ b/python/qemu/machine.py @@ -223,9 +223,8 @@ def send_fd_scm(self, fd: Optional[int] =3D None, assert fd is not None fd_param.append(str(fd)) =20 - devnull =3D open(os.path.devnull, 'rb') proc =3D subprocess.Popen( - fd_param, stdin=3Ddevnull, stdout=3Dsubprocess.PIPE, + fd_param, stdin=3Dsubprocess.DEVNULL, stdout=3Dsubprocess.PIPE, stderr=3Dsubprocess.STDOUT, close_fds=3DFalse ) output =3D proc.communicate()[0] @@ -393,7 +392,6 @@ def _launch(self) -> None: """ Launch the VM and establish a QMP connection """ - devnull =3D open(os.path.devnull, 'rb') self._pre_launch() self._qemu_full_args =3D tuple( chain(self._wrapper, @@ -403,7 +401,7 @@ def _launch(self) -> None: ) LOG.debug('VM launch command: %r', ' '.join(self._qemu_full_args)) self._popen =3D subprocess.Popen(self._qemu_full_args, - stdin=3Ddevnull, + stdin=3Dsubprocess.DEVNULL, stdout=3Dself._qemu_log_file, stderr=3Dsubprocess.STDOUT, shell=3DFalse, --=20 2.30.2