From patchwork Fri Feb 17 03:35:00 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ronnie Sahlberg X-Patchwork-Id: 13144268 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 71BBDC636D4 for ; Fri, 17 Feb 2023 03:36:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229492AbjBQDgK (ORCPT ); Thu, 16 Feb 2023 22:36:10 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47638 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229614AbjBQDgJ (ORCPT ); Thu, 16 Feb 2023 22:36:09 -0500 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F2E64498BD for ; Thu, 16 Feb 2023 19:35:20 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1676604920; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=rjZXrMa0WadpCuLhWIhGQOhQi11+oBz0hI2g6SreywY=; b=Ev3MCMIZQNuVfLJ5tJKcghGEgBJpLKcNbDnGMcQZFvXi5F+j6dWYAfEt+eG9hEb7Pl0zBh lN3ly3bXnja+YENFR2NTZMjSfHCtlNoPEtnGA8hbExrH4qDvDoN3MhhY9AAVZ6oNiRVOuu yvRA74UE04Jn8ajj/5+8DbBuPqqN2KU= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-423-W3M9fmChOoiYeesRWCoFVg-1; Thu, 16 Feb 2023 22:35:13 -0500 X-MC-Unique: W3M9fmChOoiYeesRWCoFVg-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id AC3C9821B8C; Fri, 17 Feb 2023 03:35:12 +0000 (UTC) Received: from localhost.localdomain (vpn2-52-18.bne.redhat.com [10.64.52.18]) by smtp.corp.redhat.com (Postfix) with ESMTP id A65D12166B30; Fri, 17 Feb 2023 03:35:11 +0000 (UTC) From: Ronnie Sahlberg To: linux-cifs Cc: Steve French Subject: [PATCH 1/2] cifs: Check the lease context if we actually got a lease Date: Fri, 17 Feb 2023 13:35:00 +1000 Message-Id: <20230217033501.2591185-1-lsahlber@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.6 Precedence: bulk List-ID: X-Mailing-List: linux-cifs@vger.kernel.org Some servers may return that we got a lease in rsp->OplockLevel but then in the lease context contradict this and say we got no lease at all. Thus we need to check the context if we have a lease. Additionally, IF we do not get a lease we need to make sure we close the handle before we return an error to the caller. Signed-off-by: Ronnie Sahlberg Reviewed-by: Paulo Alcantara (SUSE) --- fs/cifs/cached_dir.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/fs/cifs/cached_dir.c b/fs/cifs/cached_dir.c index 60399081046a..6672f1a0acd7 100644 --- a/fs/cifs/cached_dir.c +++ b/fs/cifs/cached_dir.c @@ -220,8 +220,7 @@ int open_cached_dir(unsigned int xid, struct cifs_tcon *tcon, } goto oshr_free; } - - atomic_inc(&tcon->num_remote_opens); + cfid->is_open = true; o_rsp = (struct smb2_create_rsp *)rsp_iov[0].iov_base; oparms.fid->persistent_fid = o_rsp->PersistentFileId; @@ -238,7 +237,8 @@ int open_cached_dir(unsigned int xid, struct cifs_tcon *tcon, &oparms.fid->epoch, oparms.fid->lease_key, &oplock, NULL, NULL); - + if (!(oplock & SMB2_LEASE_READ_CACHING_HE)) + goto oshr_free; qi_rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base; if (le32_to_cpu(qi_rsp->OutputBufferLength) < sizeof(struct smb2_file_all_info)) goto oshr_free; @@ -261,7 +261,6 @@ int open_cached_dir(unsigned int xid, struct cifs_tcon *tcon, cfid->dentry = dentry; cfid->tcon = tcon; cfid->time = jiffies; - cfid->is_open = true; cfid->has_lease = true; oshr_free: @@ -281,12 +280,17 @@ int open_cached_dir(unsigned int xid, struct cifs_tcon *tcon, } spin_unlock(&cfids->cfid_list_lock); if (rc) { + if (cfid->is_open) + SMB2_close(0, cfid->tcon, cfid->fid.persistent_fid, + cfid->fid.volatile_fid); free_cached_dir(cfid); cfid = NULL; } - if (rc == 0) + if (rc == 0) { *ret_cfid = cfid; + atomic_inc(&tcon->num_remote_opens); + } return rc; }