2 * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
3 * Written by David Howells (dhowells@redhat.com)
5 #include <linux/module.h>
6 #include <linux/nfs_fs.h>
7 #include <linux/nfs_idmap.h>
8 #include <linux/nfs_mount.h>
9 #include <linux/sunrpc/addr.h>
10 #include <linux/sunrpc/auth.h>
11 #include <linux/sunrpc/xprt.h>
12 #include <linux/sunrpc/bc_xprt.h>
15 #include "delegation.h"
16 #include "nfs4session.h"
20 #define NFSDBG_FACILITY NFSDBG_CLIENT
23 * Get a unique NFSv4.0 callback identifier which will be used
24 * by the V4.0 callback service to lookup the nfs_client struct
26 static int nfs_get_cb_ident_idr(struct nfs_client *clp, int minorversion)
29 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
31 if (clp->rpc_ops->version != 4 || minorversion != 0)
33 idr_preload(GFP_KERNEL);
34 spin_lock(&nn->nfs_client_lock);
35 ret = idr_alloc(&nn->cb_ident_idr, clp, 0, 0, GFP_NOWAIT);
37 clp->cl_cb_ident = ret;
38 spin_unlock(&nn->nfs_client_lock);
40 return ret < 0 ? ret : 0;
43 #ifdef CONFIG_NFS_V4_1
44 void nfs41_shutdown_client(struct nfs_client *clp)
46 if (nfs4_has_session(clp)) {
47 nfs4_destroy_session(clp->cl_session);
48 nfs4_destroy_clientid(clp);
52 #endif /* CONFIG_NFS_V4_1 */
54 void nfs40_shutdown_client(struct nfs_client *clp)
56 if (clp->cl_slot_tbl) {
57 nfs4_release_slot_table(clp->cl_slot_tbl);
58 kfree(clp->cl_slot_tbl);
62 struct nfs_client *nfs4_alloc_client(const struct nfs_client_initdata *cl_init)
65 struct nfs_client *clp = nfs_alloc_client(cl_init);
69 err = nfs_get_cb_ident_idr(clp, cl_init->minorversion);
73 if (cl_init->minorversion > NFS4_MAX_MINOR_VERSION) {
78 spin_lock_init(&clp->cl_lock);
79 INIT_DELAYED_WORK(&clp->cl_renewd, nfs4_renew_state);
80 rpc_init_wait_queue(&clp->cl_rpcwaitq, "NFS client");
81 clp->cl_state = 1 << NFS4CLNT_LEASE_EXPIRED;
82 clp->cl_minorversion = cl_init->minorversion;
83 clp->cl_mvops = nfs_v4_minor_ops[cl_init->minorversion];
92 * Destroy the NFS4 callback service
94 static void nfs4_destroy_callback(struct nfs_client *clp)
96 if (__test_and_clear_bit(NFS_CS_CALLBACK, &clp->cl_res_state))
97 nfs_callback_down(clp->cl_mvops->minor_version, clp->cl_net);
100 static void nfs4_shutdown_client(struct nfs_client *clp)
102 if (__test_and_clear_bit(NFS_CS_RENEWD, &clp->cl_res_state))
103 nfs4_kill_renewd(clp);
104 clp->cl_mvops->shutdown_client(clp);
105 nfs4_destroy_callback(clp);
106 if (__test_and_clear_bit(NFS_CS_IDMAP, &clp->cl_res_state))
107 nfs_idmap_delete(clp);
109 rpc_destroy_wait_queue(&clp->cl_rpcwaitq);
110 kfree(clp->cl_serverowner);
111 kfree(clp->cl_serverscope);
112 kfree(clp->cl_implid);
115 void nfs4_free_client(struct nfs_client *clp)
117 nfs4_shutdown_client(clp);
118 nfs_free_client(clp);
122 * Initialize the NFS4 callback service
124 static int nfs4_init_callback(struct nfs_client *clp)
128 if (clp->rpc_ops->version == 4) {
129 struct rpc_xprt *xprt;
131 xprt = rcu_dereference_raw(clp->cl_rpcclient->cl_xprt);
133 if (nfs4_has_session(clp)) {
134 error = xprt_setup_backchannel(xprt,
135 NFS41_BC_MIN_CALLBACKS);
140 error = nfs_callback_up(clp->cl_mvops->minor_version, xprt);
142 dprintk("%s: failed to start callback. Error = %d\n",
146 __set_bit(NFS_CS_CALLBACK, &clp->cl_res_state);
152 * nfs40_init_client - nfs_client initialization tasks for NFSv4.0
153 * @clp - nfs_client to initialize
155 * Returns zero on success, or a negative errno if some error occurred.
157 int nfs40_init_client(struct nfs_client *clp)
159 struct nfs4_slot_table *tbl;
162 tbl = kzalloc(sizeof(*tbl), GFP_NOFS);
166 ret = nfs4_setup_slot_table(tbl, NFS4_MAX_SLOT_TABLE,
167 "NFSv4.0 transport Slot table");
173 clp->cl_slot_tbl = tbl;
177 #if defined(CONFIG_NFS_V4_1)
180 * nfs41_init_client - nfs_client initialization tasks for NFSv4.1+
181 * @clp - nfs_client to initialize
183 * Returns zero on success, or a negative errno if some error occurred.
185 int nfs41_init_client(struct nfs_client *clp)
187 struct nfs4_session *session = NULL;
190 * Create the session and mark it expired.
191 * When a SEQUENCE operation encounters the expired session
192 * it will do session recovery to initialize it.
194 session = nfs4_alloc_session(clp);
198 clp->cl_session = session;
201 * The create session reply races with the server back
202 * channel probe. Mark the client NFS_CS_SESSION_INITING
203 * so that the client back channel can find the
206 nfs_mark_client_ready(clp, NFS_CS_SESSION_INITING);
210 #endif /* CONFIG_NFS_V4_1 */
213 * Initialize the minor version specific parts of an NFS4 client record
215 static int nfs4_init_client_minor_version(struct nfs_client *clp)
219 ret = clp->cl_mvops->init_client(clp);
222 return nfs4_init_callback(clp);
226 * nfs4_init_client - Initialise an NFS4 client record
228 * @clp: nfs_client to initialise
229 * @timeparms: timeout parameters for underlying RPC transport
230 * @ip_addr: callback IP address in presentation format
231 * @authflavor: authentication flavor for underlying RPC transport
233 * Returns pointer to an NFS client, or an ERR_PTR value.
235 struct nfs_client *nfs4_init_client(struct nfs_client *clp,
236 const struct rpc_timeout *timeparms,
239 char buf[INET6_ADDRSTRLEN + 1];
240 struct nfs_client *old;
243 if (clp->cl_cons_state == NFS_CS_READY) {
244 /* the client is initialised already */
245 dprintk("<-- nfs4_init_client() = 0 [already %p]\n", clp);
249 /* Check NFS protocol revision and initialize RPC op vector */
250 clp->rpc_ops = &nfs_v4_clientops;
252 if (clp->cl_minorversion != 0)
253 __set_bit(NFS_CS_INFINITE_SLOTS, &clp->cl_flags);
254 __set_bit(NFS_CS_DISCRTRY, &clp->cl_flags);
255 error = nfs_create_rpc_client(clp, timeparms, RPC_AUTH_GSS_KRB5I);
256 if (error == -EINVAL)
257 error = nfs_create_rpc_client(clp, timeparms, RPC_AUTH_UNIX);
261 /* If no clientaddr= option was specified, find a usable cb address */
262 if (ip_addr == NULL) {
263 struct sockaddr_storage cb_addr;
264 struct sockaddr *sap = (struct sockaddr *)&cb_addr;
266 error = rpc_localaddr(clp->cl_rpcclient, sap, sizeof(cb_addr));
269 error = rpc_ntop(sap, buf, sizeof(buf));
272 ip_addr = (const char *)buf;
274 strlcpy(clp->cl_ipaddr, ip_addr, sizeof(clp->cl_ipaddr));
276 error = nfs_idmap_new(clp);
278 dprintk("%s: failed to create idmapper. Error = %d\n",
282 __set_bit(NFS_CS_IDMAP, &clp->cl_res_state);
284 error = nfs4_init_client_minor_version(clp);
288 if (!nfs4_has_session(clp))
289 nfs_mark_client_ready(clp, NFS_CS_READY);
291 error = nfs4_discover_server_trunking(clp, &old);
296 clp->cl_preserve_clid = true;
303 nfs_mark_client_ready(clp, error);
305 dprintk("<-- nfs4_init_client() = xerror %d\n", error);
306 return ERR_PTR(error);
310 * SETCLIENTID just did a callback update with the callback ident in
311 * "drop," but server trunking discovery claims "drop" and "keep" are
312 * actually the same server. Swap the callback IDs so that "keep"
313 * will continue to use the callback ident the server now knows about,
314 * and so that "keep"'s original callback ident is destroyed when
317 static void nfs4_swap_callback_idents(struct nfs_client *keep,
318 struct nfs_client *drop)
320 struct nfs_net *nn = net_generic(keep->cl_net, nfs_net_id);
321 unsigned int save = keep->cl_cb_ident;
323 if (keep->cl_cb_ident == drop->cl_cb_ident)
326 dprintk("%s: keeping callback ident %u and dropping ident %u\n",
327 __func__, keep->cl_cb_ident, drop->cl_cb_ident);
329 spin_lock(&nn->nfs_client_lock);
331 idr_replace(&nn->cb_ident_idr, keep, drop->cl_cb_ident);
332 keep->cl_cb_ident = drop->cl_cb_ident;
334 idr_replace(&nn->cb_ident_idr, drop, save);
335 drop->cl_cb_ident = save;
337 spin_unlock(&nn->nfs_client_lock);
341 * nfs40_walk_client_list - Find server that recognizes a client ID
343 * @new: nfs_client with client ID to test
344 * @result: OUT: found nfs_client, or new
345 * @cred: credential to use for trunking test
347 * Returns zero, a negative errno, or a negative NFS4ERR status.
348 * If zero is returned, an nfs_client pointer is planted in "result."
350 * NB: nfs40_walk_client_list() relies on the new nfs_client being
351 * the last nfs_client on the list.
353 int nfs40_walk_client_list(struct nfs_client *new,
354 struct nfs_client **result,
355 struct rpc_cred *cred)
357 struct nfs_net *nn = net_generic(new->cl_net, nfs_net_id);
358 struct nfs_client *pos, *prev = NULL;
359 struct nfs4_setclientid_res clid = {
360 .clientid = new->cl_clientid,
361 .confirm = new->cl_confirm,
363 int status = -NFS4ERR_STALE_CLIENTID;
365 spin_lock(&nn->nfs_client_lock);
366 list_for_each_entry(pos, &nn->nfs_client_list, cl_share_link) {
367 /* If "pos" isn't marked ready, we can't trust the
368 * remaining fields in "pos" */
369 if (pos->cl_cons_state > NFS_CS_READY) {
370 atomic_inc(&pos->cl_count);
371 spin_unlock(&nn->nfs_client_lock);
374 nfs_put_client(prev);
377 status = nfs_wait_client_init_complete(pos);
378 spin_lock(&nn->nfs_client_lock);
382 if (pos->cl_cons_state != NFS_CS_READY)
385 if (pos->rpc_ops != new->rpc_ops)
388 if (pos->cl_proto != new->cl_proto)
391 if (pos->cl_minorversion != new->cl_minorversion)
394 if (pos->cl_clientid != new->cl_clientid)
397 atomic_inc(&pos->cl_count);
398 spin_unlock(&nn->nfs_client_lock);
401 nfs_put_client(prev);
404 status = nfs4_proc_setclientid_confirm(pos, &clid, cred);
406 case -NFS4ERR_STALE_CLIENTID:
409 nfs4_swap_callback_idents(pos, new);
413 dprintk("NFS: <-- %s using nfs_client = %p ({%d})\n",
414 __func__, pos, atomic_read(&pos->cl_count));
419 spin_lock(&nn->nfs_client_lock);
421 spin_unlock(&nn->nfs_client_lock);
423 /* No match found. The server lost our clientid */
426 nfs_put_client(prev);
427 dprintk("NFS: <-- %s status = %d\n", __func__, status);
431 #ifdef CONFIG_NFS_V4_1
433 * Returns true if the client IDs match
435 static bool nfs4_match_clientids(struct nfs_client *a, struct nfs_client *b)
437 if (a->cl_clientid != b->cl_clientid) {
438 dprintk("NFS: --> %s client ID %llx does not match %llx\n",
439 __func__, a->cl_clientid, b->cl_clientid);
442 dprintk("NFS: --> %s client ID %llx matches %llx\n",
443 __func__, a->cl_clientid, b->cl_clientid);
448 * Returns true if the server owners match
451 nfs4_match_serverowners(struct nfs_client *a, struct nfs_client *b)
453 struct nfs41_server_owner *o1 = a->cl_serverowner;
454 struct nfs41_server_owner *o2 = b->cl_serverowner;
456 if (o1->minor_id != o2->minor_id) {
457 dprintk("NFS: --> %s server owner minor IDs do not match\n",
462 if (o1->major_id_sz != o2->major_id_sz)
463 goto out_major_mismatch;
464 if (memcmp(o1->major_id, o2->major_id, o1->major_id_sz) != 0)
465 goto out_major_mismatch;
467 dprintk("NFS: --> %s server owners match\n", __func__);
471 dprintk("NFS: --> %s server owner major IDs do not match\n",
477 * nfs41_walk_client_list - Find nfs_client that matches a client/server owner
479 * @new: nfs_client with client ID to test
480 * @result: OUT: found nfs_client, or new
481 * @cred: credential to use for trunking test
483 * Returns zero, a negative errno, or a negative NFS4ERR status.
484 * If zero is returned, an nfs_client pointer is planted in "result."
486 * NB: nfs41_walk_client_list() relies on the new nfs_client being
487 * the last nfs_client on the list.
489 int nfs41_walk_client_list(struct nfs_client *new,
490 struct nfs_client **result,
491 struct rpc_cred *cred)
493 struct nfs_net *nn = net_generic(new->cl_net, nfs_net_id);
494 struct nfs_client *pos, *prev = NULL;
495 int status = -NFS4ERR_STALE_CLIENTID;
497 spin_lock(&nn->nfs_client_lock);
498 list_for_each_entry(pos, &nn->nfs_client_list, cl_share_link) {
499 /* If "pos" isn't marked ready, we can't trust the
500 * remaining fields in "pos", especially the client
501 * ID and serverowner fields. Wait for CREATE_SESSION
503 if (pos->cl_cons_state > NFS_CS_READY) {
504 atomic_inc(&pos->cl_count);
505 spin_unlock(&nn->nfs_client_lock);
508 nfs_put_client(prev);
511 status = nfs_wait_client_init_complete(pos);
513 nfs4_schedule_lease_recovery(pos);
514 status = nfs4_wait_clnt_recover(pos);
516 spin_lock(&nn->nfs_client_lock);
520 if (pos->cl_cons_state != NFS_CS_READY)
523 if (pos->rpc_ops != new->rpc_ops)
526 if (pos->cl_proto != new->cl_proto)
529 if (pos->cl_minorversion != new->cl_minorversion)
532 if (!nfs4_match_clientids(pos, new))
535 if (!nfs4_match_serverowners(pos, new))
538 atomic_inc(&pos->cl_count);
541 dprintk("NFS: <-- %s using nfs_client = %p ({%d})\n",
542 __func__, pos, atomic_read(&pos->cl_count));
546 /* No matching nfs_client found. */
547 spin_unlock(&nn->nfs_client_lock);
548 dprintk("NFS: <-- %s status = %d\n", __func__, status);
550 nfs_put_client(prev);
553 #endif /* CONFIG_NFS_V4_1 */
555 static void nfs4_destroy_server(struct nfs_server *server)
557 nfs_server_return_all_delegations(server);
558 unset_pnfs_layoutdriver(server);
559 nfs4_purge_state_owners(server);
563 * NFSv4.0 callback thread helper
565 * Find a client by callback identifier
568 nfs4_find_client_ident(struct net *net, int cb_ident)
570 struct nfs_client *clp;
571 struct nfs_net *nn = net_generic(net, nfs_net_id);
573 spin_lock(&nn->nfs_client_lock);
574 clp = idr_find(&nn->cb_ident_idr, cb_ident);
576 atomic_inc(&clp->cl_count);
577 spin_unlock(&nn->nfs_client_lock);
581 #if defined(CONFIG_NFS_V4_1)
582 /* Common match routine for v4.0 and v4.1 callback services */
583 static bool nfs4_cb_match_client(const struct sockaddr *addr,
584 struct nfs_client *clp, u32 minorversion)
586 struct sockaddr *clap = (struct sockaddr *)&clp->cl_addr;
588 /* Don't match clients that failed to initialise */
589 if (!(clp->cl_cons_state == NFS_CS_READY ||
590 clp->cl_cons_state == NFS_CS_SESSION_INITING))
595 /* Match the version and minorversion */
596 if (clp->rpc_ops->version != 4 ||
597 clp->cl_minorversion != minorversion)
600 /* Match only the IP address, not the port number */
601 if (!nfs_sockaddr_match_ipaddr(addr, clap))
608 * NFSv4.1 callback thread helper
609 * For CB_COMPOUND calls, find a client by IP address, protocol version,
610 * minorversion, and sessionID
612 * Returns NULL if no such client
615 nfs4_find_client_sessionid(struct net *net, const struct sockaddr *addr,
616 struct nfs4_sessionid *sid, u32 minorversion)
618 struct nfs_client *clp;
619 struct nfs_net *nn = net_generic(net, nfs_net_id);
621 spin_lock(&nn->nfs_client_lock);
622 list_for_each_entry(clp, &nn->nfs_client_list, cl_share_link) {
623 if (nfs4_cb_match_client(addr, clp, minorversion) == false)
626 if (!nfs4_has_session(clp))
630 if (memcmp(clp->cl_session->sess_id.data,
631 sid->data, NFS4_MAX_SESSIONID_LEN) != 0)
634 atomic_inc(&clp->cl_count);
635 spin_unlock(&nn->nfs_client_lock);
638 spin_unlock(&nn->nfs_client_lock);
642 #else /* CONFIG_NFS_V4_1 */
645 nfs4_find_client_sessionid(struct net *net, const struct sockaddr *addr,
646 struct nfs4_sessionid *sid, u32 minorversion)
650 #endif /* CONFIG_NFS_V4_1 */
653 * Set up an NFS4 client
655 static int nfs4_set_client(struct nfs_server *server,
656 const char *hostname,
657 const struct sockaddr *addr,
658 const size_t addrlen,
660 rpc_authflavor_t authflavour,
661 int proto, const struct rpc_timeout *timeparms,
662 u32 minorversion, struct net *net)
664 struct nfs_client_initdata cl_init = {
665 .hostname = hostname,
670 .minorversion = minorversion,
673 struct nfs_client *clp;
676 dprintk("--> nfs4_set_client()\n");
678 if (server->flags & NFS_MOUNT_NORESVPORT)
679 set_bit(NFS_CS_NORESVPORT, &cl_init.init_flags);
680 if (server->options & NFS_OPTION_MIGRATION)
681 set_bit(NFS_CS_MIGRATION, &cl_init.init_flags);
683 /* Allocate or find a client reference we can use */
684 clp = nfs_get_client(&cl_init, timeparms, ip_addr, authflavour);
686 error = PTR_ERR(clp);
691 * Query for the lease time on clientid setup or renewal
693 * Note that this will be set on nfs_clients that were created
694 * only for the DS role and did not set this bit, but now will
697 set_bit(NFS_CS_CHECK_LEASE_TIME, &clp->cl_res_state);
699 server->nfs_client = clp;
700 dprintk("<-- nfs4_set_client() = 0 [new %p]\n", clp);
703 dprintk("<-- nfs4_set_client() = xerror %d\n", error);
708 * Set up a pNFS Data Server client.
710 * Return any existing nfs_client that matches server address,port,version
713 * For a new nfs_client, use a soft mount (default), a low retrans and a
714 * low timeout interval so that if a connection is lost, we retry through
717 struct nfs_client *nfs4_set_ds_client(struct nfs_client* mds_clp,
718 const struct sockaddr *ds_addr, int ds_addrlen,
719 int ds_proto, unsigned int ds_timeo, unsigned int ds_retrans)
721 struct nfs_client_initdata cl_init = {
723 .addrlen = ds_addrlen,
726 .minorversion = mds_clp->cl_minorversion,
727 .net = mds_clp->cl_net,
729 struct rpc_timeout ds_timeout;
730 struct nfs_client *clp;
733 * Set an authflavor equual to the MDS value. Use the MDS nfs_client
734 * cl_ipaddr so as to use the same EXCHANGE_ID co_ownerid as the MDS
735 * (section 13.1 RFC 5661).
737 nfs_init_timeout_values(&ds_timeout, ds_proto, ds_timeo, ds_retrans);
738 clp = nfs_get_client(&cl_init, &ds_timeout, mds_clp->cl_ipaddr,
739 mds_clp->cl_rpcclient->cl_auth->au_flavor);
741 dprintk("<-- %s %p\n", __func__, clp);
744 EXPORT_SYMBOL_GPL(nfs4_set_ds_client);
747 * Session has been established, and the client marked ready.
748 * Set the mount rsize and wsize with negotiated fore channel
749 * attributes which will be bound checked in nfs_server_set_fsinfo.
751 static void nfs4_session_set_rwsize(struct nfs_server *server)
753 #ifdef CONFIG_NFS_V4_1
754 struct nfs4_session *sess;
758 if (!nfs4_has_session(server->nfs_client))
760 sess = server->nfs_client->cl_session;
761 server_resp_sz = sess->fc_attrs.max_resp_sz - nfs41_maxread_overhead;
762 server_rqst_sz = sess->fc_attrs.max_rqst_sz - nfs41_maxwrite_overhead;
764 if (server->rsize > server_resp_sz)
765 server->rsize = server_resp_sz;
766 if (server->wsize > server_rqst_sz)
767 server->wsize = server_rqst_sz;
768 #endif /* CONFIG_NFS_V4_1 */
771 static int nfs4_server_common_setup(struct nfs_server *server,
772 struct nfs_fh *mntfh)
774 struct nfs_fattr *fattr;
777 /* data servers support only a subset of NFSv4.1 */
778 if (is_ds_only_client(server->nfs_client))
779 return -EPROTONOSUPPORT;
781 fattr = nfs_alloc_fattr();
785 /* We must ensure the session is initialised first */
786 error = nfs4_init_session(server->nfs_client);
790 /* Set the basic capabilities */
791 server->caps |= server->nfs_client->cl_mvops->init_caps;
792 if (server->flags & NFS_MOUNT_NORDIRPLUS)
793 server->caps &= ~NFS_CAP_READDIRPLUS;
795 * Don't use NFS uid/gid mapping if we're using AUTH_SYS or lower
798 if (nfs4_disable_idmapping &&
799 server->client->cl_auth->au_flavor == RPC_AUTH_UNIX)
800 server->caps |= NFS_CAP_UIDGID_NOMAP;
803 /* Probe the root fh to retrieve its FSID and filehandle */
804 error = nfs4_get_rootfh(server, mntfh);
808 dprintk("Server FSID: %llx:%llx\n",
809 (unsigned long long) server->fsid.major,
810 (unsigned long long) server->fsid.minor);
811 dprintk("Mount FH: %d\n", mntfh->size);
813 nfs4_session_set_rwsize(server);
815 error = nfs_probe_fsinfo(server, mntfh, fattr);
819 if (server->namelen == 0 || server->namelen > NFS4_MAXNAMLEN)
820 server->namelen = NFS4_MAXNAMLEN;
822 nfs_server_insert_lists(server);
823 server->mount_time = jiffies;
824 server->destroy = nfs4_destroy_server;
826 nfs_free_fattr(fattr);
831 * Create a version 4 volume record
833 static int nfs4_init_server(struct nfs_server *server,
834 const struct nfs_parsed_mount_data *data)
836 struct rpc_timeout timeparms;
839 dprintk("--> nfs4_init_server()\n");
841 nfs_init_timeout_values(&timeparms, data->nfs_server.protocol,
842 data->timeo, data->retrans);
844 /* Initialise the client representation from the mount data */
845 server->flags = data->flags;
846 server->options = data->options;
848 /* Get a client record */
849 error = nfs4_set_client(server,
850 data->nfs_server.hostname,
851 (const struct sockaddr *)&data->nfs_server.address,
852 data->nfs_server.addrlen,
853 data->client_address,
854 data->auth_flavors[0],
855 data->nfs_server.protocol,
863 server->rsize = nfs_block_size(data->rsize, NULL);
865 server->wsize = nfs_block_size(data->wsize, NULL);
867 server->acregmin = data->acregmin * HZ;
868 server->acregmax = data->acregmax * HZ;
869 server->acdirmin = data->acdirmin * HZ;
870 server->acdirmax = data->acdirmax * HZ;
872 server->port = data->nfs_server.port;
874 error = nfs_init_server_rpcclient(server, &timeparms, data->auth_flavors[0]);
878 dprintk("<-- nfs4_init_server() = %d\n", error);
883 * Create a version 4 volume record
884 * - keyed on server and FSID
886 /*struct nfs_server *nfs4_create_server(const struct nfs_parsed_mount_data *data,
887 struct nfs_fh *mntfh)*/
888 struct nfs_server *nfs4_create_server(struct nfs_mount_info *mount_info,
889 struct nfs_subversion *nfs_mod)
891 struct nfs_server *server;
894 dprintk("--> nfs4_create_server()\n");
896 server = nfs_alloc_server();
898 return ERR_PTR(-ENOMEM);
900 /* set up the general RPC client */
901 error = nfs4_init_server(server, mount_info->parsed);
905 error = nfs4_server_common_setup(server, mount_info->mntfh);
909 dprintk("<-- nfs4_create_server() = %p\n", server);
913 nfs_free_server(server);
914 dprintk("<-- nfs4_create_server() = error %d\n", error);
915 return ERR_PTR(error);
919 * Create an NFS4 referral server record
921 struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data,
922 struct nfs_fh *mntfh)
924 struct nfs_client *parent_client;
925 struct nfs_server *server, *parent_server;
928 dprintk("--> nfs4_create_referral_server()\n");
930 server = nfs_alloc_server();
932 return ERR_PTR(-ENOMEM);
934 parent_server = NFS_SB(data->sb);
935 parent_client = parent_server->nfs_client;
937 /* Initialise the client representation from the parent server */
938 nfs_server_copy_userdata(server, parent_server);
940 /* Get a client representation.
941 * Note: NFSv4 always uses TCP, */
942 error = nfs4_set_client(server, data->hostname,
945 parent_client->cl_ipaddr,
947 rpc_protocol(parent_server->client),
948 parent_server->client->cl_timeout,
949 parent_client->cl_mvops->minor_version,
950 parent_client->cl_net);
954 error = nfs_init_server_rpcclient(server, parent_server->client->cl_timeout, data->authflavor);
958 error = nfs4_server_common_setup(server, mntfh);
962 dprintk("<-- nfs_create_referral_server() = %p\n", server);
966 nfs_free_server(server);
967 dprintk("<-- nfs4_create_referral_server() = error %d\n", error);
968 return ERR_PTR(error);