Return-Path: linux-nfs-owner@vger.kernel.org Received: from mx12.netapp.com ([216.240.18.77]:39575 "EHLO mx12.netapp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751678Ab3D2PPj (ORCPT ); Mon, 29 Apr 2013 11:15:39 -0400 From: Trond Myklebust To: linux-nfs@vger.kernel.org Subject: [PATCH 2/2] NFSv4: Warn once about servers that incorrectly apply open mode to setattr Date: Mon, 29 Apr 2013 11:15:34 -0400 Message-Id: <1367248534-33387-2-git-send-email-Trond.Myklebust@netapp.com> In-Reply-To: <1367248534-33387-1-git-send-email-Trond.Myklebust@netapp.com> References: <1367248534-33387-1-git-send-email-Trond.Myklebust@netapp.com> Sender: linux-nfs-owner@vger.kernel.org List-ID: Debugging aid to help identify servers that incorrectly apply open mode checks to setattr requests that are not changing the file size. Signed-off-by: Trond Myklebust --- fs/nfs/nfs4proc.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 982b452..9da4bd5 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -2184,6 +2184,13 @@ static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, err = _nfs4_do_setattr(inode, cred, fattr, sattr, state); switch (err) { case -NFS4ERR_OPENMODE: + if (!(sattr->ia_valid & ATTR_SIZE)) { + pr_warn_once("NFSv4: server %s is incorrectly " + "applying open mode checks to " + "a SETATTR that is not " + "changing file size.\n", + server->nfs_client->cl_hostname); + } if (state && !(state->state & FMODE_WRITE)) { err = -EBADF; if (sattr->ia_valid & ATTR_OPEN) -- 1.8.1.4