From patchwork Wed Mar 18 12:43:38 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Murphy Zhou X-Patchwork-Id: 11445197 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 889B01392 for ; Wed, 18 Mar 2020 12:43:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 67F032076E for ; Wed, 18 Mar 2020 12:43:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="dV/k+m3Q" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726832AbgCRMns (ORCPT ); Wed, 18 Mar 2020 08:43:48 -0400 Received: from mail-pf1-f193.google.com ([209.85.210.193]:39287 "EHLO mail-pf1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726550AbgCRMnr (ORCPT ); Wed, 18 Mar 2020 08:43:47 -0400 Received: by mail-pf1-f193.google.com with SMTP id d25so5829321pfn.6 for ; Wed, 18 Mar 2020 05:43:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:mime-version:content-disposition; bh=ZMEsmFlOAhMVNcWJSQKpoyZGH8jqSuY6lY2pfF9vav4=; b=dV/k+m3Qmbg+A/48O5xlkvRFd2ienTH+9+6mWb7mliYVrvbqODjmYfo4ECKT6KRQSr hoDvm9+PBR0P4zI4pG1S1PnmYKEdv9JoQ1JecgBddPQg+OzAHBdwpNFIN6LZhd5sREtP A9FGytHxvwZA3t84uXdZPYYBszCtGlmfkhmRCGwpNwfxnZWTt5xQA4bCf2bmHMgEpq40 Np82kVZf4uyJpMbRUc/B4xyIRztLpkEjoW3U4EjqwAPPAjLinABIB26hrvBHshBaVNE4 MivR76zH0cHeePviao/RJfH8Z3I7aIykpr7Hg2d26qogJ0RkiFUTVIzb4ajCK3KpR+Me bqlg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:mime-version :content-disposition; bh=ZMEsmFlOAhMVNcWJSQKpoyZGH8jqSuY6lY2pfF9vav4=; b=MnghzQXZHWFtoRYr+vu56lSwrKNIXGZlDQLd0oypV6w6cfvpLWjKQ05hOf2nPk0CPu rO+mf3TRyHGU508ekIGXQ2gKoxslDW5OQyjXmxsH2BrIZwbY/oElHXhkCyhbIy8254OR TUw4mulXVKnnreeJ6RCsYsNbs3wG7w6hR6thKrQ3yHKRuSemMFpjGyKCY0qg9M3gEZN8 y4hmEzBDPjSxj8lGNPEdLsfERuzzpXq5bD0eKeF8L+hTktQTgekivn2dfE+Aj6NPBBwR IyY88olZNXsXQUrZbsYL8PxLFYPXZmz6gj4xxPiOame6AswDC7dFyNTtdR8+k8qpsJLo VfTw== X-Gm-Message-State: ANhLgQ1opJQtKa11wqpc2RSv9+W+yObAICG0mOsYhek8Go7ceGYynx+g XtZQzQIV7b/1RaT6Vjd1DoszJPDm X-Google-Smtp-Source: ADFU+vu4pSx7GgNc6NPNKrFP3c4p5M+PQ+w0xmGAvu94VybAgpH9439OPyuKAwbUVxFHAik8SUGLWA== X-Received: by 2002:a63:c050:: with SMTP id z16mr4294856pgi.177.1584535426687; Wed, 18 Mar 2020 05:43:46 -0700 (PDT) Received: from localhost ([209.132.188.80]) by smtp.gmail.com with ESMTPSA id mg16sm2488039pjb.12.2020.03.18.05.43.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Mar 2020 05:43:46 -0700 (PDT) Date: Wed, 18 Mar 2020 20:43:38 +0800 From: Murphy Zhou To: CIFS Cc: Ronnie Sahlberg , Steve French Subject: [PATCH v2] CIFS: check new file size when extending file by fallocate Message-ID: <20200318124338.tcfccbpvn3a3z2sn@xzhoux.usersys.redhat.com> MIME-Version: 1.0 Content-Disposition: inline Sender: linux-cifs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-cifs@vger.kernel.org xfstests generic/228 checks if fallocate respect RLIMIT_FSIZE. After fallocate mode 0 extending enabled, we can hit this failure. Fix this by check the new file size with vfs helper, return error if file size is larger then RLIMIT_FSIZE(ulimit -f). This patch has been tested by LTP/xfstests aginst samba and Windows server. Acked-by: Ronnie Sahlberg Signed-off-by: Murphy Zhou --- v2: Use (off+len) instead of eof for correct argument type fs/cifs/smb2ops.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index c31e84ee3c39..f221a01f62bd 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -3246,6 +3246,10 @@ static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon, * Extending the file */ if ((keep_size == false) && i_size_read(inode) < off + len) { + rc = inode_newsize_ok(inode, off + len); + if (rc) + goto out; + if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) smb2_set_sparse(xid, tcon, cfile, inode, false);