From patchwork Tue Dec 7 00:09:25 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bruce Fields X-Patchwork-Id: 380772 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id oB709UmV018821 for ; Tue, 7 Dec 2010 00:09:34 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753015Ab0LGAJd (ORCPT ); Mon, 6 Dec 2010 19:09:33 -0500 Received: from fieldses.org ([174.143.236.118]:53643 "EHLO fieldses.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753073Ab0LGAJc (ORCPT ); Mon, 6 Dec 2010 19:09:32 -0500 Received: from bfields by fieldses.org with local (Exim 4.72) (envelope-from ) id 1PPl7b-0003fk-SK; Mon, 06 Dec 2010 19:09:31 -0500 From: "J. Bruce Fields" To: linux-nfs@vger.kernel.org Cc: "J. Bruce Fields" Subject: [PATCH 2/3] nfsd4: fix mixed 4.0/4.1 handling, 4.1 reboot Date: Mon, 6 Dec 2010 19:09:25 -0500 Message-Id: <1291680566-13980-3-git-send-email-bfields@redhat.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1291680566-13980-1-git-send-email-bfields@redhat.com> References: <1291680566-13980-1-git-send-email-bfields@redhat.com> Sender: linux-nfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter1.kernel.org [140.211.167.41]); Tue, 07 Dec 2010 00:09:34 +0000 (UTC) diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c index 7e26caa..ffb59ef 100644 --- a/fs/nfsd/nfs4recover.c +++ b/fs/nfsd/nfs4recover.c @@ -302,7 +302,6 @@ purge_old(struct dentry *parent, struct dentry *child) { int status; - /* note: we currently use this path only for minorversion 0 */ if (nfs4_has_reclaimed_state(child->d_name.name, false)) return 0; diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index febb283..d1e37ba 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -1134,39 +1134,30 @@ find_unconfirmed_client(clientid_t *clid) return NULL; } -/* - * FIXME: we need to unify the clientid namespaces for nfsv4.x - * and correctly deal with client upgrade/downgrade in EXCHANGE_ID - * and SET_CLIENTID{,_CONFIRM} - */ static bool clp_used_exchangeid(struct nfs4_client *clp) { return clp->cl_exchange_flags != 0; -} +} static struct nfs4_client * -find_confirmed_client_by_str(const char *dname, unsigned int hashval, - bool use_exchange_id) +find_confirmed_client_by_str(const char *dname, unsigned int hashval) { struct nfs4_client *clp; list_for_each_entry(clp, &conf_str_hashtbl[hashval], cl_strhash) { - if (same_name(clp->cl_recdir, dname) && - clp_used_exchangeid(clp) == use_exchange_id) + if (same_name(clp->cl_recdir, dname)) return clp; } return NULL; } static struct nfs4_client * -find_unconfirmed_client_by_str(const char *dname, unsigned int hashval, - bool use_exchange_id) +find_unconfirmed_client_by_str(const char *dname, unsigned int hashval) { struct nfs4_client *clp; list_for_each_entry(clp, &unconf_str_hashtbl[hashval], cl_strhash) { - if (same_name(clp->cl_recdir, dname) && - clp_used_exchangeid(clp) == use_exchange_id) + if (same_name(clp->cl_recdir, dname)) return clp; } return NULL; @@ -1357,8 +1348,12 @@ nfsd4_exchange_id(struct svc_rqst *rqstp, nfs4_lock_state(); status = nfs_ok; - conf = find_confirmed_client_by_str(dname, strhashval, true); + conf = find_confirmed_client_by_str(dname, strhashval); if (conf) { + if (!clp_used_exchangeid(conf)) { + status = nfserr_clid_inuse; /* XXX: ? */ + goto out; + } if (!same_verf(&verf, &conf->cl_verifier)) { /* 18.35.4 case 8 */ if (exid->flags & EXCHGID4_FLAG_UPD_CONFIRMED_REC_A) { @@ -1399,7 +1394,7 @@ nfsd4_exchange_id(struct svc_rqst *rqstp, goto out; } - unconf = find_unconfirmed_client_by_str(dname, strhashval, true); + unconf = find_unconfirmed_client_by_str(dname, strhashval); if (unconf) { /* * Possible retry or client restart. Per 18.35.4 case 4, @@ -1799,10 +1794,12 @@ nfsd4_setclientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, strhashval = clientstr_hashval(dname); nfs4_lock_state(); - conf = find_confirmed_client_by_str(dname, strhashval, false); + conf = find_confirmed_client_by_str(dname, strhashval); if (conf) { /* RFC 3530 14.2.33 CASE 0: */ status = nfserr_clid_inuse; + if (clp_used_exchangeid(conf)) + goto out; if (!same_creds(&conf->cl_cred, &rqstp->rq_cred)) { char addr_str[INET6_ADDRSTRLEN]; rpc_ntop((struct sockaddr *) &conf->cl_addr, addr_str, @@ -1817,7 +1814,7 @@ nfsd4_setclientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, * has a description of SETCLIENTID request processing consisting * of 5 bullet points, labeled as CASE0 - CASE4 below. */ - unconf = find_unconfirmed_client_by_str(dname, strhashval, false); + unconf = find_unconfirmed_client_by_str(dname, strhashval); status = nfserr_resource; if (!conf) { /* @@ -1962,7 +1959,7 @@ nfsd4_setclientid_confirm(struct svc_rqst *rqstp, unsigned int hash = clientstr_hashval(unconf->cl_recdir); conf = find_confirmed_client_by_str(unconf->cl_recdir, - hash, false); + hash); if (conf) { nfsd4_remove_clid_dir(conf); expire_client(conf); @@ -4106,7 +4103,7 @@ nfs4_has_reclaimed_state(const char *name, bool use_exchange_id) unsigned int strhashval = clientstr_hashval(name); struct nfs4_client *clp; - clp = find_confirmed_client_by_str(name, strhashval, use_exchange_id); + clp = find_confirmed_client_by_str(name, strhashval); return clp ? 1 : 0; }