From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Layton Subject: [PATCH v7 46/49] vfs: make listxattr retry once on ESTALE error Date: Mon, 1 Oct 2012 20:16:55 -0400 Message-ID: <1349137018-21948-47-git-send-email-jlayton@redhat.com> References: <1349137018-21948-1-git-send-email-jlayton@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mx1.redhat.com (ext-mx13.extmail.prod.ext.phx2.redhat.com [10.5.110.18]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id q920ICO7028766 for ; Mon, 1 Oct 2012 20:18:12 -0400 Received: from mail-gg0-f174.google.com (mail-gg0-f174.google.com [209.85.161.174]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id q920H6vY018697 for ; Mon, 1 Oct 2012 20:18:11 -0400 Received: by mail-gg0-f174.google.com with SMTP id r5so1511482ggn.33 for ; Mon, 01 Oct 2012 17:18:11 -0700 (PDT) In-Reply-To: <1349137018-21948-1-git-send-email-jlayton@redhat.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-audit-bounces@redhat.com Errors-To: linux-audit-bounces@redhat.com To: viro@ZenIV.linux.org.uk Cc: linux-fsdevel@vger.kernel.org, linux-audit@redhat.com, linux-kernel@vger.kernel.org List-Id: linux-audit@redhat.com Signed-off-by: Jeff Layton --- fs/xattr.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) diff --git a/fs/xattr.c b/fs/xattr.c index fbb93d7..6be45cd 100644 --- a/fs/xattr.c +++ b/fs/xattr.c @@ -571,12 +571,17 @@ SYSCALL_DEFINE3(listxattr, const char __user *, pathname, char __user *, list, { struct path path; ssize_t error; + unsigned int try = 0; + unsigned int lookup_flags = LOOKUP_FOLLOW; - error = user_path(pathname, &path); - if (error) - return error; - error = listxattr(path.dentry, list, size); - path_put(&path); + do { + error = user_path_at(AT_FDCWD, pathname, lookup_flags, &path); + if (error) + break; + error = listxattr(path.dentry, list, size); + path_put(&path); + lookup_flags |= LOOKUP_REVAL; + } while (retry_estale(error, try++)); return error; } -- 1.7.11.4