From patchwork Mon Jan 31 10:31:24 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hanna Czenczek X-Patchwork-Id: 12730529 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id A49CBC433EF for ; Mon, 31 Jan 2022 10:33:58 +0000 (UTC) Received: from localhost ([::1]:49864 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nEU0T-0003Db-3r for qemu-devel@archiver.kernel.org; Mon, 31 Jan 2022 05:33:57 -0500 Received: from eggs.gnu.org ([209.51.188.92]:52462) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nETyB-0002Km-Nu for qemu-devel@nongnu.org; Mon, 31 Jan 2022 05:31:35 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]:50876) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nETy8-0007nQ-NM for qemu-devel@nongnu.org; Mon, 31 Jan 2022 05:31:35 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1643625091; 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; bh=tv3MlH8D8l1wc27buT4ciUgqbtqEzXvxxeU1QHCYjI4=; b=BI5p9SEShthGaScB832pFpjQtzBYsfsKarAMxBB1ooyNjsRdCEVd0VAYS12KIXcKjYOIDX SG9np4BenIZE7ar+R64RQfTjoKrmhQWihXNoSBJXQJZTVxAbl3JfHGa+HdMS9YimbcmrtP DU/t6nvvmhtF8VBoNhSPcdPQ6qYCXC4= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-85-ons9UlggMmmnxlre6nvfDg-1; Mon, 31 Jan 2022 05:31:28 -0500 X-MC-Unique: ons9UlggMmmnxlre6nvfDg-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 3EFF71B2C980; Mon, 31 Jan 2022 10:31:27 +0000 (UTC) Received: from localhost (unknown [10.39.194.217]) by smtp.corp.redhat.com (Postfix) with ESMTPS id B81DF1ABE5; Mon, 31 Jan 2022 10:31:26 +0000 (UTC) From: Hanna Reitz To: qemu-block@nongnu.org Subject: [PATCH v2] qsd: Document fuse's allow-other option Date: Mon, 31 Jan 2022 11:31:24 +0100 Message-Id: <20220131103124.20325-1-hreitz@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=hreitz@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=170.10.129.124; envelope-from=hreitz@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.088, 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_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , Hanna Reitz , qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" We did not add documentation to the storage daemon's man page for fuse's allow-other option when it was introduced, so do that now. Fixes: 8fc54f9428b9763f800 ("export/fuse: Add allow-other option") Signed-off-by: Hanna Reitz Reviewed-by: Eric Blake --- v2: - Replaced instances of "QSD" by more generic descriptions, as suggested by Kevin. v1 patch: https://lists.nongnu.org/archive/html/qemu-block/2022-01/msg00567.html --- docs/tools/qemu-storage-daemon.rst | 9 +++++++-- storage-daemon/qemu-storage-daemon.c | 2 +- 2 files changed, 8 insertions(+), 3 deletions(-) diff --git a/docs/tools/qemu-storage-daemon.rst b/docs/tools/qemu-storage-daemon.rst index 9b0eaba6e5..878e6a5c5c 100644 --- a/docs/tools/qemu-storage-daemon.rst +++ b/docs/tools/qemu-storage-daemon.rst @@ -76,7 +76,7 @@ Standard options: .. option:: --export [type=]nbd,id=,node-name=[,name=][,writable=on|off][,bitmap=] --export [type=]vhost-user-blk,id=,node-name=,addr.type=unix,addr.path=[,writable=on|off][,logical-block-size=][,num-queues=] --export [type=]vhost-user-blk,id=,node-name=,addr.type=fd,addr.str=[,writable=on|off][,logical-block-size=][,num-queues=] - --export [type=]fuse,id=,node-name=,mountpoint=[,growable=on|off][,writable=on|off] + --export [type=]fuse,id=,node-name=,mountpoint=[,growable=on|off][,writable=on|off][,allow-other=on|off|auto] is a block export definition. ``node-name`` is the block node that should be exported. ``writable`` determines whether or not the export allows write @@ -103,7 +103,12 @@ Standard options: mounted). Consequently, applications that have opened the given file before the export became active will continue to see its original content. If ``growable`` is set, writes after the end of the exported file will grow the - block node to fit. + block node to fit. The ``allow-other`` option controls whether users other + than the user running the process will be allowed to access the export. Note + that enabling this option as a non-root user requires enabling the + user_allow_other option in the global fuse.conf configuration file. Setting + ``allow-other`` to auto (the default) will try enabling this option, and on + error fall back to disabling it. .. option:: --monitor MONITORDEF diff --git a/storage-daemon/qemu-storage-daemon.c b/storage-daemon/qemu-storage-daemon.c index 9d76d1114d..a1dcc4aa2e 100644 --- a/storage-daemon/qemu-storage-daemon.c +++ b/storage-daemon/qemu-storage-daemon.c @@ -100,7 +100,7 @@ static void help(void) "\n" #ifdef CONFIG_FUSE " --export [type=]fuse,id=,node-name=,mountpoint=\n" -" [,growable=on|off][,writable=on|off]\n" +" [,growable=on|off][,writable=on|off][,allow-other=on|off|auto]\n" " export the specified block node over FUSE\n" "\n" #endif /* CONFIG_FUSE */