From patchwork Mon Jun 29 11:54:19 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Dr. David Alan Gilbert" X-Patchwork-Id: 279131 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=-7.1 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS 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 93EB1C433DF for ; Mon, 29 Jun 2020 11:56:55 +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 5F76723D1F for ; Mon, 29 Jun 2020 11:56:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Ssm65922" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5F76723D1F 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]:40696 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jpsP8-0004jn-MR for qemu-devel@archiver.kernel.org; Mon, 29 Jun 2020 07:56:54 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:56940) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jpsMu-00007C-IB for qemu-devel@nongnu.org; Mon, 29 Jun 2020 07:54:36 -0400 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:55134 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1jpsMs-0007GW-TN for qemu-devel@nongnu.org; Mon, 29 Jun 2020 07:54:36 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1593431674; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Mji2VZefKYBc2WwzMHOzrV0/osx4TGutpi09pgSZE74=; b=Ssm65922WGOc49zH1f+ZzkQg921sdyZuBMzuIinisvJYbNutIBixoAOQ1jC8MJ4iMLuTcH fETt+RyiTsTt//anR7/L7vbo+SPvb/74oWAzfK+4tuEU0Atg8yIr4nPsHpqHYpS1LgfhJV CdG8buVuhz9YOyj17tfdUNc7V83hGiE= 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-90-sJLutpjKPsafhlt0DHeWlQ-1; Mon, 29 Jun 2020 07:54:32 -0400 X-MC-Unique: sJLutpjKPsafhlt0DHeWlQ-1 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 A301AEC1A3 for ; Mon, 29 Jun 2020 11:54:31 +0000 (UTC) Received: from dgilbert-t580.localhost (ovpn-114-210.ams2.redhat.com [10.36.114.210]) by smtp.corp.redhat.com (Postfix) with ESMTP id A7C9796B8F; Mon, 29 Jun 2020 11:54:30 +0000 (UTC) From: "Dr. David Alan Gilbert (git)" To: qemu-devel@nongnu.org, virtio-fs@redhat.com, stefanha@redhat.com, vgoyal@redhat.com Subject: [PATCH v2 2/3] virtiofsd: Check capability calls Date: Mon, 29 Jun 2020 12:54:19 +0100 Message-Id: <20200629115420.98443-3-dgilbert@redhat.com> In-Reply-To: <20200629115420.98443-1-dgilbert@redhat.com> References: <20200629115420.98443-1-dgilbert@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=dgilbert@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=205.139.110.120; envelope-from=dgilbert@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/29 01:10:03 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -30 X-Spam_score: -3.1 X-Spam_bar: --- X-Spam_report: (-3.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1, 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_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN 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: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: "Dr. David Alan Gilbert" Check the capability calls worked. Signed-off-by: Dr. David Alan Gilbert Reviewed-by: Stefan Hajnoczi --- tools/virtiofsd/passthrough_ll.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) diff --git a/tools/virtiofsd/passthrough_ll.c b/tools/virtiofsd/passthrough_ll.c index e373e3b36e..99d562046a 100644 --- a/tools/virtiofsd/passthrough_ll.c +++ b/tools/virtiofsd/passthrough_ll.c @@ -2589,7 +2589,7 @@ static void setup_capabilities(void) */ capng_setpid(syscall(SYS_gettid)); capng_clear(CAPNG_SELECT_BOTH); - capng_updatev(CAPNG_ADD, CAPNG_PERMITTED | CAPNG_EFFECTIVE, + if (capng_updatev(CAPNG_ADD, CAPNG_PERMITTED | CAPNG_EFFECTIVE, CAP_CHOWN, CAP_DAC_OVERRIDE, CAP_DAC_READ_SEARCH, @@ -2599,11 +2599,21 @@ static void setup_capabilities(void) CAP_SETUID, CAP_MKNOD, CAP_SETFCAP, - -1); + -1)) { + fuse_log(FUSE_LOG_ERR, "%s: capng_updatev failed\n", __func__); + exit(1); + } - capng_apply(CAPNG_SELECT_BOTH); + if (capng_apply(CAPNG_SELECT_BOTH)) { + fuse_log(FUSE_LOG_ERR, "%s: capng_apply failed\n", __func__); + exit(1); + } cap.saved = capng_save_state(); + if (!cap.saved) { + fuse_log(FUSE_LOG_ERR, "%s: capng_save_state failed\n", __func__); + exit(1); + } pthread_mutex_unlock(&cap.mutex); }