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 X-Spam-Level: X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 56FBAC47096 for ; Thu, 3 Jun 2021 20:52:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 38B9B61263 for ; Thu, 3 Jun 2021 20:52:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229617AbhFCUxo (ORCPT ); Thu, 3 Jun 2021 16:53:44 -0400 Received: from mail.kernel.org ([198.145.29.99]:44870 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230036AbhFCUxo (ORCPT ); Thu, 3 Jun 2021 16:53:44 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 40C4D61263; Thu, 3 Jun 2021 20:51:59 +0000 (UTC) Subject: [PATCH 14/29] lockd: Update the NLMv1 TEST results encoder to use struct xdr_stream From: Chuck Lever To: bfields@fieldses.org Cc: linux-nfs@vger.kernel.org Date: Thu, 03 Jun 2021 16:51:58 -0400 Message-ID: <162275351854.32691.13479213329688997866.stgit@klimt.1015granger.net> In-Reply-To: <162275337584.32691.3943139351165347555.stgit@klimt.1015granger.net> References: <162275337584.32691.3943139351165347555.stgit@klimt.1015granger.net> User-Agent: StGit/1.1 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org Signed-off-by: Chuck Lever --- fs/lockd/xdr.c | 74 ++++++++++++++++++++++++++------------------------------ 1 file changed, 35 insertions(+), 39 deletions(-) diff --git a/fs/lockd/xdr.c b/fs/lockd/xdr.c index 840fa8ff8426..daf3524040d6 100644 --- a/fs/lockd/xdr.c +++ b/fs/lockd/xdr.c @@ -80,15 +80,6 @@ svcxdr_decode_fhandle(struct xdr_stream *xdr, struct nfs_fh *fh) return true; } -/* - * Encode and decode owner handle - */ -static inline __be32 * -nlm_encode_oh(__be32 *p, struct xdr_netobj *oh) -{ - return xdr_encode_netobj(p, oh); -} - static bool svcxdr_decode_lock(struct xdr_stream *xdr, struct nlm_lock *lock) { @@ -121,39 +112,44 @@ svcxdr_decode_lock(struct xdr_stream *xdr, struct nlm_lock *lock) return true; } -/* - * Encode result of a TEST/TEST_MSG call - */ -static __be32 * -nlm_encode_testres(__be32 *p, struct nlm_res *resp) +static bool +svcxdr_encode_holder(struct xdr_stream *xdr, const struct nlm_lock *lock) { - s32 start, len; - - if (!(p = nlm_encode_cookie(p, &resp->cookie))) - return NULL; - *p++ = resp->status; + const struct file_lock *fl = &lock->fl; + s32 start, len; - if (resp->status == nlm_lck_denied) { - struct file_lock *fl = &resp->lock.fl; - - *p++ = (fl->fl_type == F_RDLCK)? xdr_zero : xdr_one; - *p++ = htonl(resp->lock.svid); - - /* Encode owner handle. */ - if (!(p = xdr_encode_netobj(p, &resp->lock.oh))) - return NULL; + /* exclusive */ + if (xdr_stream_encode_bool(xdr, fl->fl_type != F_RDLCK) < 0) + return false; + if (xdr_stream_encode_u32(xdr, lock->svid) < 0) + return false; + if (!svcxdr_encode_owner(xdr, &lock->oh)) + return false; + start = loff_t_to_s32(fl->fl_start); + if (fl->fl_end == OFFSET_MAX) + len = 0; + else + len = loff_t_to_s32(fl->fl_end - fl->fl_start + 1); + if (xdr_stream_encode_u32(xdr, start) < 0) + return false; + if (xdr_stream_encode_u32(xdr, len) < 0) + return false; - start = loff_t_to_s32(fl->fl_start); - if (fl->fl_end == OFFSET_MAX) - len = 0; - else - len = loff_t_to_s32(fl->fl_end - fl->fl_start + 1); + return true; +} - *p++ = htonl(start); - *p++ = htonl(len); +static bool +svcxdr_encode_testrply(struct xdr_stream *xdr, const struct nlm_res *resp) +{ + if (!svcxdr_encode_stats(xdr, resp->status)) + return false; + switch (resp->status) { + case nlm_lck_denied: + if (!svcxdr_encode_holder(xdr, &resp->lock)) + return false; } - return p; + return true; } @@ -345,11 +341,11 @@ nlmsvc_encode_void(struct svc_rqst *rqstp, __be32 *p) int nlmsvc_encode_testres(struct svc_rqst *rqstp, __be32 *p) { + struct xdr_stream *xdr = &rqstp->rq_res_stream; struct nlm_res *resp = rqstp->rq_resp; - if (!(p = nlm_encode_testres(p, resp))) - return 0; - return xdr_ressize_check(rqstp, p); + return svcxdr_encode_cookie(xdr, &resp->cookie) && + svcxdr_encode_testrply(xdr, resp); } int