From patchwork Tue Aug 13 20:37:33 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Weston Andros Adamson X-Patchwork-Id: 2844025 Return-Path: X-Original-To: patchwork-linux-nfs@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 6DD4ABF546 for ; Tue, 13 Aug 2013 20:37:51 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id F00AE205EC for ; Tue, 13 Aug 2013 20:37:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EB4D7205E6 for ; Tue, 13 Aug 2013 20:37:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759204Ab3HMUhr (ORCPT ); Tue, 13 Aug 2013 16:37:47 -0400 Received: from mx11.netapp.com ([216.240.18.76]:8875 "EHLO mx11.netapp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759174Ab3HMUhr (ORCPT ); Tue, 13 Aug 2013 16:37:47 -0400 X-IronPort-AV: E=Sophos;i="4.89,872,1367996400"; d="scan'208";a="41245226" Received: from vmwexceht02-prd.hq.netapp.com ([10.106.76.240]) by mx11-out.netapp.com with ESMTP; 13 Aug 2013 13:37:47 -0700 Received: from smtp2.corp.netapp.com (10.57.159.114) by VMWEXCEHT02-PRD.hq.netapp.com (10.106.76.240) with Microsoft SMTP Server id 14.3.123.3; Tue, 13 Aug 2013 13:37:46 -0700 Received: from vpn2ntap-237289.vpn.netapp.com (vpn2ntap-237289.vpn.netapp.com [10.55.76.25]) by smtp2.corp.netapp.com (8.13.1/8.13.1/NTAP-1.6) with ESMTP id r7DKbgdc023500; Tue, 13 Aug 2013 13:37:46 -0700 (PDT) From: Weston Andros Adamson To: CC: , Weston Andros Adamson Subject: [PATCH 2/7] nfs4.1: Add state protection handler Date: Tue, 13 Aug 2013 16:37:33 -0400 Message-ID: <1376426258-28244-3-git-send-email-dros@netapp.com> X-Mailer: git-send-email 1.7.12.4 (Apple Git-37) In-Reply-To: <1376426258-28244-1-git-send-email-dros@netapp.com> References: <1376426258-28244-1-git-send-email-dros@netapp.com> MIME-Version: 1.0 Sender: linux-nfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org X-Spam-Status: No, score=-9.7 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add nfs4_state_protect - the function responsible for switching to the machine credential and the correct rpc client when SP4_MACH_CRED is in use. Signed-off-by: Weston Andros Adamson --- fs/nfs/nfs4_fs.h | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index d7bb59d..77b5c9f 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -272,6 +272,35 @@ is_ds_client(struct nfs_client *clp) { return clp->cl_exchange_flags & EXCHGID4_FLAG_USE_PNFS_DS; } + +/* + * Function responsible for determining if an rpc_message should use the + * machine cred under SP4_MACH_CRED and if so switching the credential and + * authflavor (using the nfs_client's rpc_clnt which will be krb5i/p). + * Should be called before rpc_call_sync/rpc_call_async. + */ +static inline void +nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_mode, + struct rpc_clnt **clntp, struct rpc_message *msg) +{ + struct rpc_cred *newcred = NULL; + rpc_authflavor_t flavor; + + if (test_bit(sp4_mode, &clp->cl_sp4_flags)) { + spin_lock(&clp->cl_lock); + if (clp->cl_machine_cred != NULL) + newcred = get_rpccred(clp->cl_machine_cred); + spin_unlock(&clp->cl_lock); + if (msg->rpc_cred) + put_rpccred(msg->rpc_cred); + msg->rpc_cred = newcred; + + flavor = clp->cl_rpcclient->cl_auth->au_flavor; + WARN_ON(flavor != RPC_AUTH_GSS_KRB5I && + flavor != RPC_AUTH_GSS_KRB5P); + *clntp = clp->cl_rpcclient; + } +} #else /* CONFIG_NFS_v4_1 */ static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *server) { @@ -297,6 +326,12 @@ is_ds_client(struct nfs_client *clp) { return false; } + +static inline void +nfs4_state_protect(struct nfs_client *clp, unsigned long sp4_flags, + struct rpc_clnt **clntp, struct rpc_message *msg) +{ +} #endif /* CONFIG_NFS_V4_1 */ extern const struct nfs4_minor_version_ops *nfs_v4_minor_ops[];