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 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 62B52C433EF for ; Thu, 17 Feb 2022 15:22:56 +0000 (UTC) Received: from localhost ([::1]:47480 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nKicR-0007rt-Ai for qemu-devel@archiver.kernel.org; Thu, 17 Feb 2022 10:22:55 -0500 Received: from eggs.gnu.org ([209.51.188.92]:44512) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nKhlD-0000Je-7Y for qemu-devel@nongnu.org; Thu, 17 Feb 2022 09:27:58 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]:52657) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nKhlB-0000ZX-EG for qemu-devel@nongnu.org; Thu, 17 Feb 2022 09:27:54 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1645108072; 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=8IV8umSWpt4PcAeLbZo5gTVWdKX4UXNQkOAhmao9P2M=; b=W0EqmGLHDAY15gKyw/dH6xrXaGMm59NdV82qhP3MIWPfP63UePkSJLA3qLHOE6s31iPfvJ U06GHMBygbaujDmtmb0PeHyN7mmKg5wMqf0crDZooNxhaHI61ccX+5A3hzRlPz3BNm+5Oj xnsoDvCnJMKcRpL0wqLGv6ghjEabMZo= 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-621-LENy0EWUOp2D5uDSujD8rQ-1; Thu, 17 Feb 2022 09:27:51 -0500 X-MC-Unique: LENy0EWUOp2D5uDSujD8rQ-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 A2391801AA6; Thu, 17 Feb 2022 14:27:50 +0000 (UTC) Received: from dgilbert-t580.localhost (unknown [10.39.194.54]) by smtp.corp.redhat.com (Postfix) with ESMTP id E87426F948; Thu, 17 Feb 2022 14:27:31 +0000 (UTC) From: "Dr. David Alan Gilbert (git)" To: qemu-devel@nongnu.org, vgoyal@redhat.com, groug@kaod.org, sebastian.hasler@stuvus.uni-stuttgart.de Subject: [PULL 07/12] virtiofsd: Move core file creation code in separate function Date: Thu, 17 Feb 2022 14:23:57 +0000 Message-Id: <20220217142402.52819-8-dgilbert@redhat.com> In-Reply-To: <20220217142402.52819-1-dgilbert@redhat.com> References: <20220217142402.52819-1-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 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset="US-ASCII" Received-SPF: pass client-ip=170.10.129.124; envelope-from=dgilbert@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=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham 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: virtio-fs@redhat.com, stefanha@redhat.com, slp@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Vivek Goyal Move core file creation bits in a separate function. Soon this is going to get more complex as file creation need to set security context also. And there will be multiple modes of file creation in next patch. Reviewed-by: Dr. David Alan Gilbert Signed-off-by: Vivek Goyal Message-Id: <20220208204813.682906-7-vgoyal@redhat.com> Signed-off-by: Dr. David Alan Gilbert --- tools/virtiofsd/passthrough_ll.c | 36 ++++++++++++++++++++++---------- 1 file changed, 25 insertions(+), 11 deletions(-) diff --git a/tools/virtiofsd/passthrough_ll.c b/tools/virtiofsd/passthrough_ll.c index 3e56d1cd95..e27479f1c9 100644 --- a/tools/virtiofsd/passthrough_ll.c +++ b/tools/virtiofsd/passthrough_ll.c @@ -2001,6 +2001,30 @@ static int lo_do_open(struct lo_data *lo, struct lo_inode *inode, return 0; } +static int do_lo_create(fuse_req_t req, struct lo_inode *parent_inode, + const char *name, mode_t mode, + struct fuse_file_info *fi, int* open_fd) +{ + int err = 0, fd; + struct lo_cred old = {}; + struct lo_data *lo = lo_data(req); + + err = lo_change_cred(req, &old, lo->change_umask); + if (err) { + return err; + } + + /* Try to create a new file but don't open existing files */ + fd = openat(parent_inode->fd, name, fi->flags | O_CREAT | O_EXCL, mode); + if (fd == -1) { + err = errno; + } else { + *open_fd = fd; + } + lo_restore_cred(&old, lo->change_umask); + return err; +} + static void lo_create(fuse_req_t req, fuse_ino_t parent, const char *name, mode_t mode, struct fuse_file_info *fi) { @@ -2010,7 +2034,6 @@ static void lo_create(fuse_req_t req, fuse_ino_t parent, const char *name, struct lo_inode *inode = NULL; struct fuse_entry_param e; int err; - struct lo_cred old = {}; fuse_log(FUSE_LOG_DEBUG, "lo_create(parent=%" PRIu64 ", name=%s)" " kill_priv=%d\n", parent, name, fi->kill_priv); @@ -2026,18 +2049,9 @@ static void lo_create(fuse_req_t req, fuse_ino_t parent, const char *name, return; } - err = lo_change_cred(req, &old, lo->change_umask); - if (err) { - goto out; - } - update_open_flags(lo->writeback, lo->allow_direct_io, fi); - /* Try to create a new file but don't open existing files */ - fd = openat(parent_inode->fd, name, fi->flags | O_CREAT | O_EXCL, mode); - err = fd == -1 ? errno : 0; - - lo_restore_cred(&old, lo->change_umask); + err = do_lo_create(req, parent_inode, name, mode, fi, &fd); /* Ignore the error if file exists and O_EXCL was not given */ if (err && (err != EEXIST || (fi->flags & O_EXCL))) { -- 2.35.1