From patchwork Wed Oct 21 18:52:02 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Snow X-Patchwork-Id: 302342 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=-9.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 51BF6C4363A for ; Wed, 21 Oct 2020 19:04:32 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 9D3542177B for ; Wed, 21 Oct 2020 19:04:31 +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="LjyP+tpV" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9D3542177B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:35546 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kVJPS-0003e2-JT for qemu-devel@archiver.kernel.org; Wed, 21 Oct 2020 15:04:30 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:42708) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kVJE1-0006Dc-So for qemu-devel@nongnu.org; Wed, 21 Oct 2020 14:52:42 -0400 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:52248) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kVJDq-0008BL-5s for qemu-devel@nongnu.org; Wed, 21 Oct 2020 14:52:41 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1603306341; 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=YhF7QyFbEuVzv2X08ZIiQwxtTed607w0WuQG/bgH/uQ=; b=LjyP+tpVT0/NvdcSbdhqRBrcAX2PbUCREBzozrxS39Ub1g7a+IV7DOnZSq44QTwf4tB/JG zWNrGnl+UEOg5107sWCQZz8/o67Dd7Ffkwlq3psnIdpcTur7l0hDBJjfAj6rp7KFVfuWW/ 0BQ6RN6dPaXlLdm0ELIfAJKi9Ya3KNw= 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-546-5aA2VmBGPaG0xIUFi17UFg-1; Wed, 21 Oct 2020 14:52:18 -0400 X-MC-Unique: 5aA2VmBGPaG0xIUFi17UFg-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 337AC804B79 for ; Wed, 21 Oct 2020 18:52:17 +0000 (UTC) Received: from scv.redhat.com (ovpn-116-160.rdu2.redhat.com [10.10.116.160]) by smtp.corp.redhat.com (Postfix) with ESMTP id 8EE9B10023A5; Wed, 21 Oct 2020 18:52:16 +0000 (UTC) From: John Snow To: qemu-devel@nongnu.org Subject: [PATCH 09/15] scripts/qom-fuse: Convert to QOMCommand Date: Wed, 21 Oct 2020 14:52:02 -0400 Message-Id: <20201021185208.1611145-10-jsnow@redhat.com> In-Reply-To: <20201021185208.1611145-1-jsnow@redhat.com> References: <20201021185208.1611145-1-jsnow@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 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 Received-SPF: pass client-ip=63.128.21.124; envelope-from=jsnow@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/20 22:12:28 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham 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: Markus Armbruster , John Snow , Eduardo Habkost , Cleber Rosa Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Move qom-fuse onto the QOMCommand base established in python/qemu/qmp/qom_common.py. The interface doesn't change incompatibly, "qom-fuse mountpoint" still works as an invocation, and QMP_SOCKET is still used as the environment variable. Signed-off-by: John Snow --- scripts/qmp/qom-fuse | 59 ++++++++++++++++++++++++++++++++++---------- 1 file changed, 46 insertions(+), 13 deletions(-) diff --git a/scripts/qmp/qom-fuse b/scripts/qmp/qom-fuse index 5b80da9df6..f9bf85f382 100755 --- a/scripts/qmp/qom-fuse +++ b/scripts/qmp/qom-fuse @@ -8,11 +8,19 @@ may be browsed, queried and edited using traditional shell tooling. This script requires the 'fusepy' python package; you may install it by using ``pip3 install --user fusepy``. -ENV: - QMP_SOCKET: Path to the QMP server socket -Usage: - qom-fuse /mount/to/here +usage: qom-fuse [-h] [--socket SOCKET] + +Mount a QOM tree as a FUSE filesystem + +positional arguments: + Mount point + +optional arguments: + -h, --help show this help message and exit + --socket SOCKET, -s SOCKET + QMP socket path or address (addr:port). May also be + set via QMP_SOCKET environment variable. """ ## # Copyright IBM, Corp. 2012 @@ -26,30 +34,56 @@ Usage: # See the COPYING file in the top-level directory. ## +import argparse from errno import ENOENT, EPERM import os import stat import sys +from typing import Dict import fuse from fuse import FUSE, FuseOSError, Operations sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'python')) -from qemu.qmp import QEMUMonitorProtocol, QMPResponseError +from qemu.qmp import QMPResponseError +from qemu.qmp.qom_common import QOMCommand fuse.fuse_python_api = (0, 2) -class QOMFS(Operations): - """QOMFS implements fuse.Operations to provide a QOM filesystem.""" - def __init__(self, qmp): - self.qmp = qmp - self.qmp.connect() - self.ino_map = {} +class QOMFuse(QOMCommand, Operations): + """ + QOMFuse implements both fuse.Operations and QOMCommand. + + Operations implements the FS, and QOMCommand implements the CLI command. + """ + name = 'fuse' + help = 'Mount a QOM tree as a FUSE filesystem' + fuse: FUSE + + @classmethod + def configure_parser(cls, parser: argparse.ArgumentParser) -> None: + super().configure_parser(parser) + parser.add_argument( + 'mount', + metavar='', + action='store', + help="Mount point", + ) + + def __init__(self, args: argparse.Namespace): + super().__init__(args) + self.mount = args.mount + self.ino_map: Dict[str, int] = {} self.ino_count = 1 + def run(self) -> int: + print(f"Mounting QOMFS to '{self.mount}'", file=sys.stderr) + self.fuse = FUSE(self, self.mount, foreground=True) + return 0 + def get_ino(self, path): """Get an inode number for a given QOM path.""" if path in self.ino_map: @@ -172,5 +206,4 @@ class QOMFS(Operations): if __name__ == '__main__': - fuse = FUSE(QOMFS(QEMUMonitorProtocol(os.environ['QMP_SOCKET'])), - sys.argv[1], foreground=True) + sys.exit(QOMFuse.entry_point())