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/auth.h>
10 #include <linux/sunrpc/xprt.h>
11 #include <linux/sunrpc/bc_xprt.h>
14 #include "delegation.h"
15 #include "nfs4session.h"
19 #define NFSDBG_FACILITY NFSDBG_CLIENT
22 * Get a unique NFSv4.0 callback identifier which will be used
23 * by the V4.0 callback service to lookup the nfs_client struct
25 static int nfs_get_cb_ident_idr(struct nfs_client
*clp
, int minorversion
)
28 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
30 if (clp
->rpc_ops
->version
!= 4 || minorversion
!= 0)
33 if (!idr_pre_get(&nn
->cb_ident_idr
, GFP_KERNEL
))
35 spin_lock(&nn
->nfs_client_lock
);
36 ret
= idr_get_new(&nn
->cb_ident_idr
, clp
, &clp
->cl_cb_ident
);
37 spin_unlock(&nn
->nfs_client_lock
);
43 #ifdef CONFIG_NFS_V4_1
44 static void nfs4_shutdown_session(struct nfs_client
*clp
)
46 if (nfs4_has_session(clp
)) {
47 nfs4_destroy_session(clp
->cl_session
);
48 nfs4_destroy_clientid(clp
);
52 #else /* CONFIG_NFS_V4_1 */
53 static void nfs4_shutdown_session(struct nfs_client
*clp
)
56 #endif /* CONFIG_NFS_V4_1 */
58 struct nfs_client
*nfs4_alloc_client(const struct nfs_client_initdata
*cl_init
)
61 struct nfs_client
*clp
= nfs_alloc_client(cl_init
);
65 err
= nfs_get_cb_ident_idr(clp
, cl_init
->minorversion
);
69 spin_lock_init(&clp
->cl_lock
);
70 INIT_DELAYED_WORK(&clp
->cl_renewd
, nfs4_renew_state
);
71 rpc_init_wait_queue(&clp
->cl_rpcwaitq
, "NFS client");
72 clp
->cl_state
= 1 << NFS4CLNT_LEASE_EXPIRED
;
73 clp
->cl_minorversion
= cl_init
->minorversion
;
74 clp
->cl_mvops
= nfs_v4_minor_ops
[cl_init
->minorversion
];
83 * Destroy the NFS4 callback service
85 static void nfs4_destroy_callback(struct nfs_client
*clp
)
87 if (__test_and_clear_bit(NFS_CS_CALLBACK
, &clp
->cl_res_state
))
88 nfs_callback_down(clp
->cl_mvops
->minor_version
, clp
->cl_net
);
91 static void nfs4_shutdown_client(struct nfs_client
*clp
)
93 if (__test_and_clear_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
))
94 nfs4_kill_renewd(clp
);
95 nfs4_shutdown_session(clp
);
96 nfs4_destroy_callback(clp
);
97 if (__test_and_clear_bit(NFS_CS_IDMAP
, &clp
->cl_res_state
))
98 nfs_idmap_delete(clp
);
100 rpc_destroy_wait_queue(&clp
->cl_rpcwaitq
);
101 kfree(clp
->cl_serverowner
);
102 kfree(clp
->cl_serverscope
);
103 kfree(clp
->cl_implid
);
106 void nfs4_free_client(struct nfs_client
*clp
)
108 nfs4_shutdown_client(clp
);
109 nfs_free_client(clp
);
113 * Initialize the NFS4 callback service
115 static int nfs4_init_callback(struct nfs_client
*clp
)
119 if (clp
->rpc_ops
->version
== 4) {
120 struct rpc_xprt
*xprt
;
122 xprt
= rcu_dereference_raw(clp
->cl_rpcclient
->cl_xprt
);
124 if (nfs4_has_session(clp
)) {
125 error
= xprt_setup_backchannel(xprt
,
126 NFS41_BC_MIN_CALLBACKS
);
131 error
= nfs_callback_up(clp
->cl_mvops
->minor_version
, xprt
);
133 dprintk("%s: failed to start callback. Error = %d\n",
137 __set_bit(NFS_CS_CALLBACK
, &clp
->cl_res_state
);
143 * Initialize the minor version specific parts of an NFS4 client record
145 static int nfs4_init_client_minor_version(struct nfs_client
*clp
)
147 #if defined(CONFIG_NFS_V4_1)
148 if (clp
->cl_mvops
->minor_version
) {
149 struct nfs4_session
*session
= NULL
;
151 * Create the session and mark it expired.
152 * When a SEQUENCE operation encounters the expired session
153 * it will do session recovery to initialize it.
155 session
= nfs4_alloc_session(clp
);
159 clp
->cl_session
= session
;
161 * The create session reply races with the server back
162 * channel probe. Mark the client NFS_CS_SESSION_INITING
163 * so that the client back channel can find the
166 nfs_mark_client_ready(clp
, NFS_CS_SESSION_INITING
);
168 #endif /* CONFIG_NFS_V4_1 */
170 return nfs4_init_callback(clp
);
174 * nfs4_init_client - Initialise an NFS4 client record
176 * @clp: nfs_client to initialise
177 * @timeparms: timeout parameters for underlying RPC transport
178 * @ip_addr: callback IP address in presentation format
179 * @authflavor: authentication flavor for underlying RPC transport
181 * Returns pointer to an NFS client, or an ERR_PTR value.
183 struct nfs_client
*nfs4_init_client(struct nfs_client
*clp
,
184 const struct rpc_timeout
*timeparms
,
186 rpc_authflavor_t authflavour
)
188 char buf
[INET6_ADDRSTRLEN
+ 1];
189 struct nfs_client
*old
;
192 if (clp
->cl_cons_state
== NFS_CS_READY
) {
193 /* the client is initialised already */
194 dprintk("<-- nfs4_init_client() = 0 [already %p]\n", clp
);
198 /* Check NFS protocol revision and initialize RPC op vector */
199 clp
->rpc_ops
= &nfs_v4_clientops
;
201 __set_bit(NFS_CS_DISCRTRY
, &clp
->cl_flags
);
202 error
= nfs_create_rpc_client(clp
, timeparms
, authflavour
);
206 /* If no clientaddr= option was specified, find a usable cb address */
207 if (ip_addr
== NULL
) {
208 struct sockaddr_storage cb_addr
;
209 struct sockaddr
*sap
= (struct sockaddr
*)&cb_addr
;
211 error
= rpc_localaddr(clp
->cl_rpcclient
, sap
, sizeof(cb_addr
));
214 error
= rpc_ntop(sap
, buf
, sizeof(buf
));
217 ip_addr
= (const char *)buf
;
219 strlcpy(clp
->cl_ipaddr
, ip_addr
, sizeof(clp
->cl_ipaddr
));
221 error
= nfs_idmap_new(clp
);
223 dprintk("%s: failed to create idmapper. Error = %d\n",
227 __set_bit(NFS_CS_IDMAP
, &clp
->cl_res_state
);
229 error
= nfs4_init_client_minor_version(clp
);
233 if (!nfs4_has_session(clp
))
234 nfs_mark_client_ready(clp
, NFS_CS_READY
);
236 error
= nfs4_discover_server_trunking(clp
, &old
);
240 clp
->cl_preserve_clid
= true;
243 atomic_inc(&clp
->cl_count
);
249 nfs_mark_client_ready(clp
, error
);
251 dprintk("<-- nfs4_init_client() = xerror %d\n", error
);
252 return ERR_PTR(error
);
256 * SETCLIENTID just did a callback update with the callback ident in
257 * "drop," but server trunking discovery claims "drop" and "keep" are
258 * actually the same server. Swap the callback IDs so that "keep"
259 * will continue to use the callback ident the server now knows about,
260 * and so that "keep"'s original callback ident is destroyed when
263 static void nfs4_swap_callback_idents(struct nfs_client
*keep
,
264 struct nfs_client
*drop
)
266 struct nfs_net
*nn
= net_generic(keep
->cl_net
, nfs_net_id
);
267 unsigned int save
= keep
->cl_cb_ident
;
269 if (keep
->cl_cb_ident
== drop
->cl_cb_ident
)
272 dprintk("%s: keeping callback ident %u and dropping ident %u\n",
273 __func__
, keep
->cl_cb_ident
, drop
->cl_cb_ident
);
275 spin_lock(&nn
->nfs_client_lock
);
277 idr_replace(&nn
->cb_ident_idr
, keep
, drop
->cl_cb_ident
);
278 keep
->cl_cb_ident
= drop
->cl_cb_ident
;
280 idr_replace(&nn
->cb_ident_idr
, drop
, save
);
281 drop
->cl_cb_ident
= save
;
283 spin_unlock(&nn
->nfs_client_lock
);
287 * nfs40_walk_client_list - Find server that recognizes a client ID
289 * @new: nfs_client with client ID to test
290 * @result: OUT: found nfs_client, or new
291 * @cred: credential to use for trunking test
293 * Returns zero, a negative errno, or a negative NFS4ERR status.
294 * If zero is returned, an nfs_client pointer is planted in "result."
296 * NB: nfs40_walk_client_list() relies on the new nfs_client being
297 * the last nfs_client on the list.
299 int nfs40_walk_client_list(struct nfs_client
*new,
300 struct nfs_client
**result
,
301 struct rpc_cred
*cred
)
303 struct nfs_net
*nn
= net_generic(new->cl_net
, nfs_net_id
);
304 struct nfs_client
*pos
, *n
, *prev
= NULL
;
305 struct nfs4_setclientid_res clid
= {
306 .clientid
= new->cl_clientid
,
307 .confirm
= new->cl_confirm
,
311 spin_lock(&nn
->nfs_client_lock
);
312 list_for_each_entry_safe(pos
, n
, &nn
->nfs_client_list
, cl_share_link
) {
313 /* If "pos" isn't marked ready, we can't trust the
314 * remaining fields in "pos" */
315 if (pos
->cl_cons_state
< NFS_CS_READY
)
318 if (pos
->rpc_ops
!= new->rpc_ops
)
321 if (pos
->cl_proto
!= new->cl_proto
)
324 if (pos
->cl_minorversion
!= new->cl_minorversion
)
327 if (pos
->cl_clientid
!= new->cl_clientid
)
330 atomic_inc(&pos
->cl_count
);
331 spin_unlock(&nn
->nfs_client_lock
);
334 nfs_put_client(prev
);
336 status
= nfs4_proc_setclientid_confirm(pos
, &clid
, cred
);
338 nfs4_swap_callback_idents(pos
, new);
342 dprintk("NFS: <-- %s using nfs_client = %p ({%d})\n",
343 __func__
, pos
, atomic_read(&pos
->cl_count
));
346 if (status
!= -NFS4ERR_STALE_CLIENTID
) {
348 dprintk("NFS: <-- %s status = %d, no result\n",
353 spin_lock(&nn
->nfs_client_lock
);
358 * No matching nfs_client found. This should be impossible,
359 * because the new nfs_client has already been added to
360 * nfs_client_list by nfs_get_client().
362 * Don't BUG(), since the caller is holding a mutex.
365 nfs_put_client(prev
);
366 spin_unlock(&nn
->nfs_client_lock
);
367 pr_err("NFS: %s Error: no matching nfs_client found\n", __func__
);
368 return -NFS4ERR_STALE_CLIENTID
;
371 #ifdef CONFIG_NFS_V4_1
373 * Returns true if the client IDs match
375 static bool nfs4_match_clientids(struct nfs_client
*a
, struct nfs_client
*b
)
377 if (a
->cl_clientid
!= b
->cl_clientid
) {
378 dprintk("NFS: --> %s client ID %llx does not match %llx\n",
379 __func__
, a
->cl_clientid
, b
->cl_clientid
);
382 dprintk("NFS: --> %s client ID %llx matches %llx\n",
383 __func__
, a
->cl_clientid
, b
->cl_clientid
);
388 * Returns true if the server owners match
391 nfs4_match_serverowners(struct nfs_client
*a
, struct nfs_client
*b
)
393 struct nfs41_server_owner
*o1
= a
->cl_serverowner
;
394 struct nfs41_server_owner
*o2
= b
->cl_serverowner
;
396 if (o1
->minor_id
!= o2
->minor_id
) {
397 dprintk("NFS: --> %s server owner minor IDs do not match\n",
402 if (o1
->major_id_sz
!= o2
->major_id_sz
)
403 goto out_major_mismatch
;
404 if (memcmp(o1
->major_id
, o2
->major_id
, o1
->major_id_sz
) != 0)
405 goto out_major_mismatch
;
407 dprintk("NFS: --> %s server owners match\n", __func__
);
411 dprintk("NFS: --> %s server owner major IDs do not match\n",
417 * nfs41_walk_client_list - Find nfs_client that matches a client/server owner
419 * @new: nfs_client with client ID to test
420 * @result: OUT: found nfs_client, or new
421 * @cred: credential to use for trunking test
423 * Returns zero, a negative errno, or a negative NFS4ERR status.
424 * If zero is returned, an nfs_client pointer is planted in "result."
426 * NB: nfs41_walk_client_list() relies on the new nfs_client being
427 * the last nfs_client on the list.
429 int nfs41_walk_client_list(struct nfs_client
*new,
430 struct nfs_client
**result
,
431 struct rpc_cred
*cred
)
433 struct nfs_net
*nn
= net_generic(new->cl_net
, nfs_net_id
);
434 struct nfs_client
*pos
, *n
, *prev
= NULL
;
437 spin_lock(&nn
->nfs_client_lock
);
438 list_for_each_entry_safe(pos
, n
, &nn
->nfs_client_list
, cl_share_link
) {
439 /* If "pos" isn't marked ready, we can't trust the
440 * remaining fields in "pos", especially the client
441 * ID and serverowner fields. Wait for CREATE_SESSION
443 if (pos
->cl_cons_state
< NFS_CS_READY
) {
444 atomic_inc(&pos
->cl_count
);
445 spin_unlock(&nn
->nfs_client_lock
);
448 nfs_put_client(prev
);
451 error
= nfs_wait_client_init_complete(pos
);
454 spin_lock(&nn
->nfs_client_lock
);
458 spin_lock(&nn
->nfs_client_lock
);
461 if (pos
->rpc_ops
!= new->rpc_ops
)
464 if (pos
->cl_proto
!= new->cl_proto
)
467 if (pos
->cl_minorversion
!= new->cl_minorversion
)
470 if (!nfs4_match_clientids(pos
, new))
473 if (!nfs4_match_serverowners(pos
, new))
476 spin_unlock(&nn
->nfs_client_lock
);
477 dprintk("NFS: <-- %s using nfs_client = %p ({%d})\n",
478 __func__
, pos
, atomic_read(&pos
->cl_count
));
485 * No matching nfs_client found. This should be impossible,
486 * because the new nfs_client has already been added to
487 * nfs_client_list by nfs_get_client().
489 * Don't BUG(), since the caller is holding a mutex.
491 spin_unlock(&nn
->nfs_client_lock
);
492 pr_err("NFS: %s Error: no matching nfs_client found\n", __func__
);
493 return -NFS4ERR_STALE_CLIENTID
;
495 #endif /* CONFIG_NFS_V4_1 */
497 static void nfs4_destroy_server(struct nfs_server
*server
)
499 nfs_server_return_all_delegations(server
);
500 unset_pnfs_layoutdriver(server
);
501 nfs4_purge_state_owners(server
);
505 * NFSv4.0 callback thread helper
507 * Find a client by callback identifier
510 nfs4_find_client_ident(struct net
*net
, int cb_ident
)
512 struct nfs_client
*clp
;
513 struct nfs_net
*nn
= net_generic(net
, nfs_net_id
);
515 spin_lock(&nn
->nfs_client_lock
);
516 clp
= idr_find(&nn
->cb_ident_idr
, cb_ident
);
518 atomic_inc(&clp
->cl_count
);
519 spin_unlock(&nn
->nfs_client_lock
);
523 #if defined(CONFIG_NFS_V4_1)
524 /* Common match routine for v4.0 and v4.1 callback services */
525 static bool nfs4_cb_match_client(const struct sockaddr
*addr
,
526 struct nfs_client
*clp
, u32 minorversion
)
528 struct sockaddr
*clap
= (struct sockaddr
*)&clp
->cl_addr
;
530 /* Don't match clients that failed to initialise */
531 if (!(clp
->cl_cons_state
== NFS_CS_READY
||
532 clp
->cl_cons_state
== NFS_CS_SESSION_INITING
))
537 /* Match the version and minorversion */
538 if (clp
->rpc_ops
->version
!= 4 ||
539 clp
->cl_minorversion
!= minorversion
)
542 /* Match only the IP address, not the port number */
543 if (!nfs_sockaddr_match_ipaddr(addr
, clap
))
550 * NFSv4.1 callback thread helper
551 * For CB_COMPOUND calls, find a client by IP address, protocol version,
552 * minorversion, and sessionID
554 * Returns NULL if no such client
557 nfs4_find_client_sessionid(struct net
*net
, const struct sockaddr
*addr
,
558 struct nfs4_sessionid
*sid
)
560 struct nfs_client
*clp
;
561 struct nfs_net
*nn
= net_generic(net
, nfs_net_id
);
563 spin_lock(&nn
->nfs_client_lock
);
564 list_for_each_entry(clp
, &nn
->nfs_client_list
, cl_share_link
) {
565 if (nfs4_cb_match_client(addr
, clp
, 1) == false)
568 if (!nfs4_has_session(clp
))
572 if (memcmp(clp
->cl_session
->sess_id
.data
,
573 sid
->data
, NFS4_MAX_SESSIONID_LEN
) != 0)
576 atomic_inc(&clp
->cl_count
);
577 spin_unlock(&nn
->nfs_client_lock
);
580 spin_unlock(&nn
->nfs_client_lock
);
584 #else /* CONFIG_NFS_V4_1 */
587 nfs4_find_client_sessionid(struct net
*net
, const struct sockaddr
*addr
,
588 struct nfs4_sessionid
*sid
)
592 #endif /* CONFIG_NFS_V4_1 */
595 * Set up an NFS4 client
597 static int nfs4_set_client(struct nfs_server
*server
,
598 const char *hostname
,
599 const struct sockaddr
*addr
,
600 const size_t addrlen
,
602 rpc_authflavor_t authflavour
,
603 int proto
, const struct rpc_timeout
*timeparms
,
604 u32 minorversion
, struct net
*net
)
606 struct nfs_client_initdata cl_init
= {
607 .hostname
= hostname
,
612 .minorversion
= minorversion
,
615 struct nfs_client
*clp
;
618 dprintk("--> nfs4_set_client()\n");
620 if (server
->flags
& NFS_MOUNT_NORESVPORT
)
621 set_bit(NFS_CS_NORESVPORT
, &cl_init
.init_flags
);
623 /* Allocate or find a client reference we can use */
624 clp
= nfs_get_client(&cl_init
, timeparms
, ip_addr
, authflavour
);
626 error
= PTR_ERR(clp
);
631 * Query for the lease time on clientid setup or renewal
633 * Note that this will be set on nfs_clients that were created
634 * only for the DS role and did not set this bit, but now will
637 set_bit(NFS_CS_CHECK_LEASE_TIME
, &clp
->cl_res_state
);
639 server
->nfs_client
= clp
;
640 dprintk("<-- nfs4_set_client() = 0 [new %p]\n", clp
);
643 dprintk("<-- nfs4_set_client() = xerror %d\n", error
);
648 * Set up a pNFS Data Server client.
650 * Return any existing nfs_client that matches server address,port,version
653 * For a new nfs_client, use a soft mount (default), a low retrans and a
654 * low timeout interval so that if a connection is lost, we retry through
657 struct nfs_client
*nfs4_set_ds_client(struct nfs_client
* mds_clp
,
658 const struct sockaddr
*ds_addr
, int ds_addrlen
,
659 int ds_proto
, unsigned int ds_timeo
, unsigned int ds_retrans
)
661 struct nfs_client_initdata cl_init
= {
663 .addrlen
= ds_addrlen
,
666 .minorversion
= mds_clp
->cl_minorversion
,
667 .net
= mds_clp
->cl_net
,
669 struct rpc_timeout ds_timeout
;
670 struct nfs_client
*clp
;
673 * Set an authflavor equual to the MDS value. Use the MDS nfs_client
674 * cl_ipaddr so as to use the same EXCHANGE_ID co_ownerid as the MDS
675 * (section 13.1 RFC 5661).
677 nfs_init_timeout_values(&ds_timeout
, ds_proto
, ds_timeo
, ds_retrans
);
678 clp
= nfs_get_client(&cl_init
, &ds_timeout
, mds_clp
->cl_ipaddr
,
679 mds_clp
->cl_rpcclient
->cl_auth
->au_flavor
);
681 dprintk("<-- %s %p\n", __func__
, clp
);
684 EXPORT_SYMBOL_GPL(nfs4_set_ds_client
);
687 * Session has been established, and the client marked ready.
688 * Set the mount rsize and wsize with negotiated fore channel
689 * attributes which will be bound checked in nfs_server_set_fsinfo.
691 static void nfs4_session_set_rwsize(struct nfs_server
*server
)
693 #ifdef CONFIG_NFS_V4_1
694 struct nfs4_session
*sess
;
698 if (!nfs4_has_session(server
->nfs_client
))
700 sess
= server
->nfs_client
->cl_session
;
701 server_resp_sz
= sess
->fc_attrs
.max_resp_sz
- nfs41_maxread_overhead
;
702 server_rqst_sz
= sess
->fc_attrs
.max_rqst_sz
- nfs41_maxwrite_overhead
;
704 if (server
->rsize
> server_resp_sz
)
705 server
->rsize
= server_resp_sz
;
706 if (server
->wsize
> server_rqst_sz
)
707 server
->wsize
= server_rqst_sz
;
708 #endif /* CONFIG_NFS_V4_1 */
711 static int nfs4_server_common_setup(struct nfs_server
*server
,
712 struct nfs_fh
*mntfh
)
714 struct nfs_fattr
*fattr
;
717 /* data servers support only a subset of NFSv4.1 */
718 if (is_ds_only_client(server
->nfs_client
))
719 return -EPROTONOSUPPORT
;
721 fattr
= nfs_alloc_fattr();
725 /* We must ensure the session is initialised first */
726 error
= nfs4_init_session(server
);
730 /* Probe the root fh to retrieve its FSID and filehandle */
731 error
= nfs4_get_rootfh(server
, mntfh
);
735 dprintk("Server FSID: %llx:%llx\n",
736 (unsigned long long) server
->fsid
.major
,
737 (unsigned long long) server
->fsid
.minor
);
738 dprintk("Mount FH: %d\n", mntfh
->size
);
740 nfs4_session_set_rwsize(server
);
742 error
= nfs_probe_fsinfo(server
, mntfh
, fattr
);
746 if (server
->namelen
== 0 || server
->namelen
> NFS4_MAXNAMLEN
)
747 server
->namelen
= NFS4_MAXNAMLEN
;
749 nfs_server_insert_lists(server
);
750 server
->mount_time
= jiffies
;
751 server
->destroy
= nfs4_destroy_server
;
753 nfs_free_fattr(fattr
);
758 * Create a version 4 volume record
760 static int nfs4_init_server(struct nfs_server
*server
,
761 const struct nfs_parsed_mount_data
*data
)
763 struct rpc_timeout timeparms
;
766 dprintk("--> nfs4_init_server()\n");
768 nfs_init_timeout_values(&timeparms
, data
->nfs_server
.protocol
,
769 data
->timeo
, data
->retrans
);
771 /* Initialise the client representation from the mount data */
772 server
->flags
= data
->flags
;
773 server
->caps
|= NFS_CAP_ATOMIC_OPEN
|NFS_CAP_CHANGE_ATTR
|NFS_CAP_POSIX_LOCK
;
774 if (!(data
->flags
& NFS_MOUNT_NORDIRPLUS
))
775 server
->caps
|= NFS_CAP_READDIRPLUS
;
776 server
->options
= data
->options
;
778 /* Get a client record */
779 error
= nfs4_set_client(server
,
780 data
->nfs_server
.hostname
,
781 (const struct sockaddr
*)&data
->nfs_server
.address
,
782 data
->nfs_server
.addrlen
,
783 data
->client_address
,
784 data
->auth_flavors
[0],
785 data
->nfs_server
.protocol
,
793 * Don't use NFS uid/gid mapping if we're using AUTH_SYS or lower
796 if (nfs4_disable_idmapping
&& data
->auth_flavors
[0] == RPC_AUTH_UNIX
)
797 server
->caps
|= NFS_CAP_UIDGID_NOMAP
;
800 server
->rsize
= nfs_block_size(data
->rsize
, NULL
);
802 server
->wsize
= nfs_block_size(data
->wsize
, NULL
);
804 server
->acregmin
= data
->acregmin
* HZ
;
805 server
->acregmax
= data
->acregmax
* HZ
;
806 server
->acdirmin
= data
->acdirmin
* HZ
;
807 server
->acdirmax
= data
->acdirmax
* HZ
;
809 server
->port
= data
->nfs_server
.port
;
811 error
= nfs_init_server_rpcclient(server
, &timeparms
, data
->auth_flavors
[0]);
815 dprintk("<-- nfs4_init_server() = %d\n", error
);
820 * Create a version 4 volume record
821 * - keyed on server and FSID
823 /*struct nfs_server *nfs4_create_server(const struct nfs_parsed_mount_data *data,
824 struct nfs_fh *mntfh)*/
825 struct nfs_server
*nfs4_create_server(struct nfs_mount_info
*mount_info
,
826 struct nfs_subversion
*nfs_mod
)
828 struct nfs_server
*server
;
831 dprintk("--> nfs4_create_server()\n");
833 server
= nfs_alloc_server();
835 return ERR_PTR(-ENOMEM
);
837 /* set up the general RPC client */
838 error
= nfs4_init_server(server
, mount_info
->parsed
);
842 error
= nfs4_server_common_setup(server
, mount_info
->mntfh
);
846 dprintk("<-- nfs4_create_server() = %p\n", server
);
850 nfs_free_server(server
);
851 dprintk("<-- nfs4_create_server() = error %d\n", error
);
852 return ERR_PTR(error
);
856 * Create an NFS4 referral server record
858 struct nfs_server
*nfs4_create_referral_server(struct nfs_clone_mount
*data
,
859 struct nfs_fh
*mntfh
)
861 struct nfs_client
*parent_client
;
862 struct nfs_server
*server
, *parent_server
;
865 dprintk("--> nfs4_create_referral_server()\n");
867 server
= nfs_alloc_server();
869 return ERR_PTR(-ENOMEM
);
871 parent_server
= NFS_SB(data
->sb
);
872 parent_client
= parent_server
->nfs_client
;
874 /* Initialise the client representation from the parent server */
875 nfs_server_copy_userdata(server
, parent_server
);
876 server
->caps
|= NFS_CAP_ATOMIC_OPEN
|NFS_CAP_CHANGE_ATTR
;
878 /* Get a client representation.
879 * Note: NFSv4 always uses TCP, */
880 error
= nfs4_set_client(server
, data
->hostname
,
883 parent_client
->cl_ipaddr
,
885 rpc_protocol(parent_server
->client
),
886 parent_server
->client
->cl_timeout
,
887 parent_client
->cl_mvops
->minor_version
,
888 parent_client
->cl_net
);
892 error
= nfs_init_server_rpcclient(server
, parent_server
->client
->cl_timeout
, data
->authflavor
);
896 error
= nfs4_server_common_setup(server
, mntfh
);
900 dprintk("<-- nfs_create_referral_server() = %p\n", server
);
904 nfs_free_server(server
);
905 dprintk("<-- nfs4_create_referral_server() = error %d\n", error
);
906 return ERR_PTR(error
);