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)
32 idr_preload(GFP_KERNEL
);
33 spin_lock(&nn
->nfs_client_lock
);
34 ret
= idr_alloc(&nn
->cb_ident_idr
, clp
, 0, 0, GFP_NOWAIT
);
36 clp
->cl_cb_ident
= ret
;
37 spin_unlock(&nn
->nfs_client_lock
);
39 return ret
< 0 ? ret
: 0;
42 #ifdef CONFIG_NFS_V4_1
43 static void nfs4_shutdown_session(struct nfs_client
*clp
)
45 if (nfs4_has_session(clp
)) {
46 nfs4_destroy_session(clp
->cl_session
);
47 nfs4_destroy_clientid(clp
);
51 #else /* CONFIG_NFS_V4_1 */
52 static void nfs4_shutdown_session(struct nfs_client
*clp
)
55 #endif /* CONFIG_NFS_V4_1 */
57 struct nfs_client
*nfs4_alloc_client(const struct nfs_client_initdata
*cl_init
)
60 struct nfs_client
*clp
= nfs_alloc_client(cl_init
);
64 err
= nfs_get_cb_ident_idr(clp
, cl_init
->minorversion
);
68 spin_lock_init(&clp
->cl_lock
);
69 INIT_DELAYED_WORK(&clp
->cl_renewd
, nfs4_renew_state
);
70 rpc_init_wait_queue(&clp
->cl_rpcwaitq
, "NFS client");
71 clp
->cl_state
= 1 << NFS4CLNT_LEASE_EXPIRED
;
72 clp
->cl_minorversion
= cl_init
->minorversion
;
73 clp
->cl_mvops
= nfs_v4_minor_ops
[cl_init
->minorversion
];
82 * Destroy the NFS4 callback service
84 static void nfs4_destroy_callback(struct nfs_client
*clp
)
86 if (__test_and_clear_bit(NFS_CS_CALLBACK
, &clp
->cl_res_state
))
87 nfs_callback_down(clp
->cl_mvops
->minor_version
, clp
->cl_net
);
90 static void nfs4_shutdown_client(struct nfs_client
*clp
)
92 if (__test_and_clear_bit(NFS_CS_RENEWD
, &clp
->cl_res_state
))
93 nfs4_kill_renewd(clp
);
94 nfs4_shutdown_session(clp
);
95 nfs4_destroy_callback(clp
);
96 if (__test_and_clear_bit(NFS_CS_IDMAP
, &clp
->cl_res_state
))
97 nfs_idmap_delete(clp
);
99 rpc_destroy_wait_queue(&clp
->cl_rpcwaitq
);
100 kfree(clp
->cl_serverowner
);
101 kfree(clp
->cl_serverscope
);
102 kfree(clp
->cl_implid
);
105 void nfs4_free_client(struct nfs_client
*clp
)
107 nfs4_shutdown_client(clp
);
108 nfs_free_client(clp
);
112 * Initialize the NFS4 callback service
114 static int nfs4_init_callback(struct nfs_client
*clp
)
118 if (clp
->rpc_ops
->version
== 4) {
119 struct rpc_xprt
*xprt
;
121 xprt
= rcu_dereference_raw(clp
->cl_rpcclient
->cl_xprt
);
123 if (nfs4_has_session(clp
)) {
124 error
= xprt_setup_backchannel(xprt
,
125 NFS41_BC_MIN_CALLBACKS
);
130 error
= nfs_callback_up(clp
->cl_mvops
->minor_version
, xprt
);
132 dprintk("%s: failed to start callback. Error = %d\n",
136 __set_bit(NFS_CS_CALLBACK
, &clp
->cl_res_state
);
142 * Initialize the minor version specific parts of an NFS4 client record
144 static int nfs4_init_client_minor_version(struct nfs_client
*clp
)
146 #if defined(CONFIG_NFS_V4_1)
147 if (clp
->cl_mvops
->minor_version
) {
148 struct nfs4_session
*session
= NULL
;
150 * Create the session and mark it expired.
151 * When a SEQUENCE operation encounters the expired session
152 * it will do session recovery to initialize it.
154 session
= nfs4_alloc_session(clp
);
158 clp
->cl_session
= session
;
160 * The create session reply races with the server back
161 * channel probe. Mark the client NFS_CS_SESSION_INITING
162 * so that the client back channel can find the
165 nfs_mark_client_ready(clp
, NFS_CS_SESSION_INITING
);
167 #endif /* CONFIG_NFS_V4_1 */
169 return nfs4_init_callback(clp
);
173 * nfs4_init_client - Initialise an NFS4 client record
175 * @clp: nfs_client to initialise
176 * @timeparms: timeout parameters for underlying RPC transport
177 * @ip_addr: callback IP address in presentation format
178 * @authflavor: authentication flavor for underlying RPC transport
180 * Returns pointer to an NFS client, or an ERR_PTR value.
182 struct nfs_client
*nfs4_init_client(struct nfs_client
*clp
,
183 const struct rpc_timeout
*timeparms
,
185 rpc_authflavor_t authflavour
)
187 char buf
[INET6_ADDRSTRLEN
+ 1];
188 struct nfs_client
*old
;
191 if (clp
->cl_cons_state
== NFS_CS_READY
) {
192 /* the client is initialised already */
193 dprintk("<-- nfs4_init_client() = 0 [already %p]\n", clp
);
197 /* Check NFS protocol revision and initialize RPC op vector */
198 clp
->rpc_ops
= &nfs_v4_clientops
;
200 __set_bit(NFS_CS_DISCRTRY
, &clp
->cl_flags
);
201 error
= nfs_create_rpc_client(clp
, timeparms
, authflavour
);
205 /* If no clientaddr= option was specified, find a usable cb address */
206 if (ip_addr
== NULL
) {
207 struct sockaddr_storage cb_addr
;
208 struct sockaddr
*sap
= (struct sockaddr
*)&cb_addr
;
210 error
= rpc_localaddr(clp
->cl_rpcclient
, sap
, sizeof(cb_addr
));
213 error
= rpc_ntop(sap
, buf
, sizeof(buf
));
216 ip_addr
= (const char *)buf
;
218 strlcpy(clp
->cl_ipaddr
, ip_addr
, sizeof(clp
->cl_ipaddr
));
220 error
= nfs_idmap_new(clp
);
222 dprintk("%s: failed to create idmapper. Error = %d\n",
226 __set_bit(NFS_CS_IDMAP
, &clp
->cl_res_state
);
228 error
= nfs4_init_client_minor_version(clp
);
232 if (!nfs4_has_session(clp
))
233 nfs_mark_client_ready(clp
, NFS_CS_READY
);
235 error
= nfs4_discover_server_trunking(clp
, &old
);
240 clp
->cl_preserve_clid
= true;
247 nfs_mark_client_ready(clp
, error
);
249 dprintk("<-- nfs4_init_client() = xerror %d\n", error
);
250 return ERR_PTR(error
);
254 * SETCLIENTID just did a callback update with the callback ident in
255 * "drop," but server trunking discovery claims "drop" and "keep" are
256 * actually the same server. Swap the callback IDs so that "keep"
257 * will continue to use the callback ident the server now knows about,
258 * and so that "keep"'s original callback ident is destroyed when
261 static void nfs4_swap_callback_idents(struct nfs_client
*keep
,
262 struct nfs_client
*drop
)
264 struct nfs_net
*nn
= net_generic(keep
->cl_net
, nfs_net_id
);
265 unsigned int save
= keep
->cl_cb_ident
;
267 if (keep
->cl_cb_ident
== drop
->cl_cb_ident
)
270 dprintk("%s: keeping callback ident %u and dropping ident %u\n",
271 __func__
, keep
->cl_cb_ident
, drop
->cl_cb_ident
);
273 spin_lock(&nn
->nfs_client_lock
);
275 idr_replace(&nn
->cb_ident_idr
, keep
, drop
->cl_cb_ident
);
276 keep
->cl_cb_ident
= drop
->cl_cb_ident
;
278 idr_replace(&nn
->cb_ident_idr
, drop
, save
);
279 drop
->cl_cb_ident
= save
;
281 spin_unlock(&nn
->nfs_client_lock
);
285 * nfs40_walk_client_list - Find server that recognizes a client ID
287 * @new: nfs_client with client ID to test
288 * @result: OUT: found nfs_client, or new
289 * @cred: credential to use for trunking test
291 * Returns zero, a negative errno, or a negative NFS4ERR status.
292 * If zero is returned, an nfs_client pointer is planted in "result."
294 * NB: nfs40_walk_client_list() relies on the new nfs_client being
295 * the last nfs_client on the list.
297 int nfs40_walk_client_list(struct nfs_client
*new,
298 struct nfs_client
**result
,
299 struct rpc_cred
*cred
)
301 struct nfs_net
*nn
= net_generic(new->cl_net
, nfs_net_id
);
302 struct nfs_client
*pos
, *n
, *prev
= NULL
;
303 struct nfs4_setclientid_res clid
= {
304 .clientid
= new->cl_clientid
,
305 .confirm
= new->cl_confirm
,
307 int status
= -NFS4ERR_STALE_CLIENTID
;
309 spin_lock(&nn
->nfs_client_lock
);
310 list_for_each_entry_safe(pos
, n
, &nn
->nfs_client_list
, cl_share_link
) {
311 /* If "pos" isn't marked ready, we can't trust the
312 * remaining fields in "pos" */
313 if (pos
->cl_cons_state
< NFS_CS_READY
)
316 if (pos
->rpc_ops
!= new->rpc_ops
)
319 if (pos
->cl_proto
!= new->cl_proto
)
322 if (pos
->cl_minorversion
!= new->cl_minorversion
)
325 if (pos
->cl_clientid
!= new->cl_clientid
)
328 atomic_inc(&pos
->cl_count
);
329 spin_unlock(&nn
->nfs_client_lock
);
332 nfs_put_client(prev
);
335 status
= nfs4_proc_setclientid_confirm(pos
, &clid
, cred
);
337 case -NFS4ERR_STALE_CLIENTID
:
340 nfs4_swap_callback_idents(pos
, new);
344 dprintk("NFS: <-- %s using nfs_client = %p ({%d})\n",
345 __func__
, pos
, atomic_read(&pos
->cl_count
));
350 spin_lock(&nn
->nfs_client_lock
);
352 spin_unlock(&nn
->nfs_client_lock
);
354 /* No match found. The server lost our clientid */
357 nfs_put_client(prev
);
358 dprintk("NFS: <-- %s status = %d\n", __func__
, status
);
362 #ifdef CONFIG_NFS_V4_1
364 * Returns true if the client IDs match
366 static bool nfs4_match_clientids(struct nfs_client
*a
, struct nfs_client
*b
)
368 if (a
->cl_clientid
!= b
->cl_clientid
) {
369 dprintk("NFS: --> %s client ID %llx does not match %llx\n",
370 __func__
, a
->cl_clientid
, b
->cl_clientid
);
373 dprintk("NFS: --> %s client ID %llx matches %llx\n",
374 __func__
, a
->cl_clientid
, b
->cl_clientid
);
379 * Returns true if the server owners match
382 nfs4_match_serverowners(struct nfs_client
*a
, struct nfs_client
*b
)
384 struct nfs41_server_owner
*o1
= a
->cl_serverowner
;
385 struct nfs41_server_owner
*o2
= b
->cl_serverowner
;
387 if (o1
->minor_id
!= o2
->minor_id
) {
388 dprintk("NFS: --> %s server owner minor IDs do not match\n",
393 if (o1
->major_id_sz
!= o2
->major_id_sz
)
394 goto out_major_mismatch
;
395 if (memcmp(o1
->major_id
, o2
->major_id
, o1
->major_id_sz
) != 0)
396 goto out_major_mismatch
;
398 dprintk("NFS: --> %s server owners match\n", __func__
);
402 dprintk("NFS: --> %s server owner major IDs do not match\n",
408 * nfs41_walk_client_list - Find nfs_client that matches a client/server owner
410 * @new: nfs_client with client ID to test
411 * @result: OUT: found nfs_client, or new
412 * @cred: credential to use for trunking test
414 * Returns zero, a negative errno, or a negative NFS4ERR status.
415 * If zero is returned, an nfs_client pointer is planted in "result."
417 * NB: nfs41_walk_client_list() relies on the new nfs_client being
418 * the last nfs_client on the list.
420 int nfs41_walk_client_list(struct nfs_client
*new,
421 struct nfs_client
**result
,
422 struct rpc_cred
*cred
)
424 struct nfs_net
*nn
= net_generic(new->cl_net
, nfs_net_id
);
425 struct nfs_client
*pos
, *n
, *prev
= NULL
;
426 int status
= -NFS4ERR_STALE_CLIENTID
;
428 spin_lock(&nn
->nfs_client_lock
);
429 list_for_each_entry_safe(pos
, n
, &nn
->nfs_client_list
, cl_share_link
) {
430 /* If "pos" isn't marked ready, we can't trust the
431 * remaining fields in "pos", especially the client
432 * ID and serverowner fields. Wait for CREATE_SESSION
434 if (pos
->cl_cons_state
< NFS_CS_READY
) {
435 atomic_inc(&pos
->cl_count
);
436 spin_unlock(&nn
->nfs_client_lock
);
439 nfs_put_client(prev
);
442 nfs4_schedule_lease_recovery(pos
);
443 status
= nfs_wait_client_init_complete(pos
);
446 spin_lock(&nn
->nfs_client_lock
);
449 status
= pos
->cl_cons_state
;
450 spin_lock(&nn
->nfs_client_lock
);
455 if (pos
->rpc_ops
!= new->rpc_ops
)
458 if (pos
->cl_proto
!= new->cl_proto
)
461 if (pos
->cl_minorversion
!= new->cl_minorversion
)
464 if (!nfs4_match_clientids(pos
, new))
467 if (!nfs4_match_serverowners(pos
, new))
470 atomic_inc(&pos
->cl_count
);
471 spin_unlock(&nn
->nfs_client_lock
);
472 dprintk("NFS: <-- %s using nfs_client = %p ({%d})\n",
473 __func__
, pos
, atomic_read(&pos
->cl_count
));
479 /* No matching nfs_client found. */
480 spin_unlock(&nn
->nfs_client_lock
);
481 dprintk("NFS: <-- %s status = %d\n", __func__
, status
);
484 #endif /* CONFIG_NFS_V4_1 */
486 static void nfs4_destroy_server(struct nfs_server
*server
)
488 nfs_server_return_all_delegations(server
);
489 unset_pnfs_layoutdriver(server
);
490 nfs4_purge_state_owners(server
);
494 * NFSv4.0 callback thread helper
496 * Find a client by callback identifier
499 nfs4_find_client_ident(struct net
*net
, int cb_ident
)
501 struct nfs_client
*clp
;
502 struct nfs_net
*nn
= net_generic(net
, nfs_net_id
);
504 spin_lock(&nn
->nfs_client_lock
);
505 clp
= idr_find(&nn
->cb_ident_idr
, cb_ident
);
507 atomic_inc(&clp
->cl_count
);
508 spin_unlock(&nn
->nfs_client_lock
);
512 #if defined(CONFIG_NFS_V4_1)
513 /* Common match routine for v4.0 and v4.1 callback services */
514 static bool nfs4_cb_match_client(const struct sockaddr
*addr
,
515 struct nfs_client
*clp
, u32 minorversion
)
517 struct sockaddr
*clap
= (struct sockaddr
*)&clp
->cl_addr
;
519 /* Don't match clients that failed to initialise */
520 if (!(clp
->cl_cons_state
== NFS_CS_READY
||
521 clp
->cl_cons_state
== NFS_CS_SESSION_INITING
))
526 /* Match the version and minorversion */
527 if (clp
->rpc_ops
->version
!= 4 ||
528 clp
->cl_minorversion
!= minorversion
)
531 /* Match only the IP address, not the port number */
532 if (!nfs_sockaddr_match_ipaddr(addr
, clap
))
539 * NFSv4.1 callback thread helper
540 * For CB_COMPOUND calls, find a client by IP address, protocol version,
541 * minorversion, and sessionID
543 * Returns NULL if no such client
546 nfs4_find_client_sessionid(struct net
*net
, const struct sockaddr
*addr
,
547 struct nfs4_sessionid
*sid
)
549 struct nfs_client
*clp
;
550 struct nfs_net
*nn
= net_generic(net
, nfs_net_id
);
552 spin_lock(&nn
->nfs_client_lock
);
553 list_for_each_entry(clp
, &nn
->nfs_client_list
, cl_share_link
) {
554 if (nfs4_cb_match_client(addr
, clp
, 1) == false)
557 if (!nfs4_has_session(clp
))
561 if (memcmp(clp
->cl_session
->sess_id
.data
,
562 sid
->data
, NFS4_MAX_SESSIONID_LEN
) != 0)
565 atomic_inc(&clp
->cl_count
);
566 spin_unlock(&nn
->nfs_client_lock
);
569 spin_unlock(&nn
->nfs_client_lock
);
573 #else /* CONFIG_NFS_V4_1 */
576 nfs4_find_client_sessionid(struct net
*net
, const struct sockaddr
*addr
,
577 struct nfs4_sessionid
*sid
)
581 #endif /* CONFIG_NFS_V4_1 */
584 * Set up an NFS4 client
586 static int nfs4_set_client(struct nfs_server
*server
,
587 const char *hostname
,
588 const struct sockaddr
*addr
,
589 const size_t addrlen
,
591 rpc_authflavor_t authflavour
,
592 int proto
, const struct rpc_timeout
*timeparms
,
593 u32 minorversion
, struct net
*net
)
595 struct nfs_client_initdata cl_init
= {
596 .hostname
= hostname
,
601 .minorversion
= minorversion
,
604 struct nfs_client
*clp
;
607 dprintk("--> nfs4_set_client()\n");
609 if (server
->flags
& NFS_MOUNT_NORESVPORT
)
610 set_bit(NFS_CS_NORESVPORT
, &cl_init
.init_flags
);
612 /* Allocate or find a client reference we can use */
613 clp
= nfs_get_client(&cl_init
, timeparms
, ip_addr
, authflavour
);
615 error
= PTR_ERR(clp
);
620 * Query for the lease time on clientid setup or renewal
622 * Note that this will be set on nfs_clients that were created
623 * only for the DS role and did not set this bit, but now will
626 set_bit(NFS_CS_CHECK_LEASE_TIME
, &clp
->cl_res_state
);
628 server
->nfs_client
= clp
;
629 dprintk("<-- nfs4_set_client() = 0 [new %p]\n", clp
);
632 dprintk("<-- nfs4_set_client() = xerror %d\n", error
);
637 * Set up a pNFS Data Server client.
639 * Return any existing nfs_client that matches server address,port,version
642 * For a new nfs_client, use a soft mount (default), a low retrans and a
643 * low timeout interval so that if a connection is lost, we retry through
646 struct nfs_client
*nfs4_set_ds_client(struct nfs_client
* mds_clp
,
647 const struct sockaddr
*ds_addr
, int ds_addrlen
,
648 int ds_proto
, unsigned int ds_timeo
, unsigned int ds_retrans
)
650 struct nfs_client_initdata cl_init
= {
652 .addrlen
= ds_addrlen
,
655 .minorversion
= mds_clp
->cl_minorversion
,
656 .net
= mds_clp
->cl_net
,
658 struct rpc_timeout ds_timeout
;
659 struct nfs_client
*clp
;
662 * Set an authflavor equual to the MDS value. Use the MDS nfs_client
663 * cl_ipaddr so as to use the same EXCHANGE_ID co_ownerid as the MDS
664 * (section 13.1 RFC 5661).
666 nfs_init_timeout_values(&ds_timeout
, ds_proto
, ds_timeo
, ds_retrans
);
667 clp
= nfs_get_client(&cl_init
, &ds_timeout
, mds_clp
->cl_ipaddr
,
668 mds_clp
->cl_rpcclient
->cl_auth
->au_flavor
);
670 dprintk("<-- %s %p\n", __func__
, clp
);
673 EXPORT_SYMBOL_GPL(nfs4_set_ds_client
);
676 * Session has been established, and the client marked ready.
677 * Set the mount rsize and wsize with negotiated fore channel
678 * attributes which will be bound checked in nfs_server_set_fsinfo.
680 static void nfs4_session_set_rwsize(struct nfs_server
*server
)
682 #ifdef CONFIG_NFS_V4_1
683 struct nfs4_session
*sess
;
687 if (!nfs4_has_session(server
->nfs_client
))
689 sess
= server
->nfs_client
->cl_session
;
690 server_resp_sz
= sess
->fc_attrs
.max_resp_sz
- nfs41_maxread_overhead
;
691 server_rqst_sz
= sess
->fc_attrs
.max_rqst_sz
- nfs41_maxwrite_overhead
;
693 if (server
->rsize
> server_resp_sz
)
694 server
->rsize
= server_resp_sz
;
695 if (server
->wsize
> server_rqst_sz
)
696 server
->wsize
= server_rqst_sz
;
697 #endif /* CONFIG_NFS_V4_1 */
700 static int nfs4_server_common_setup(struct nfs_server
*server
,
701 struct nfs_fh
*mntfh
)
703 struct nfs_fattr
*fattr
;
706 /* data servers support only a subset of NFSv4.1 */
707 if (is_ds_only_client(server
->nfs_client
))
708 return -EPROTONOSUPPORT
;
710 fattr
= nfs_alloc_fattr();
714 /* We must ensure the session is initialised first */
715 error
= nfs4_init_session(server
);
719 /* Probe the root fh to retrieve its FSID and filehandle */
720 error
= nfs4_get_rootfh(server
, mntfh
);
724 dprintk("Server FSID: %llx:%llx\n",
725 (unsigned long long) server
->fsid
.major
,
726 (unsigned long long) server
->fsid
.minor
);
727 dprintk("Mount FH: %d\n", mntfh
->size
);
729 nfs4_session_set_rwsize(server
);
731 error
= nfs_probe_fsinfo(server
, mntfh
, fattr
);
735 if (server
->namelen
== 0 || server
->namelen
> NFS4_MAXNAMLEN
)
736 server
->namelen
= NFS4_MAXNAMLEN
;
738 nfs_server_insert_lists(server
);
739 server
->mount_time
= jiffies
;
740 server
->destroy
= nfs4_destroy_server
;
742 nfs_free_fattr(fattr
);
747 * Create a version 4 volume record
749 static int nfs4_init_server(struct nfs_server
*server
,
750 const struct nfs_parsed_mount_data
*data
)
752 struct rpc_timeout timeparms
;
755 dprintk("--> nfs4_init_server()\n");
757 nfs_init_timeout_values(&timeparms
, data
->nfs_server
.protocol
,
758 data
->timeo
, data
->retrans
);
760 /* Initialise the client representation from the mount data */
761 server
->flags
= data
->flags
;
762 server
->caps
|= NFS_CAP_ATOMIC_OPEN
|NFS_CAP_CHANGE_ATTR
|NFS_CAP_POSIX_LOCK
;
763 if (!(data
->flags
& NFS_MOUNT_NORDIRPLUS
))
764 server
->caps
|= NFS_CAP_READDIRPLUS
;
765 server
->options
= data
->options
;
767 /* Get a client record */
768 error
= nfs4_set_client(server
,
769 data
->nfs_server
.hostname
,
770 (const struct sockaddr
*)&data
->nfs_server
.address
,
771 data
->nfs_server
.addrlen
,
772 data
->client_address
,
773 data
->auth_flavors
[0],
774 data
->nfs_server
.protocol
,
782 * Don't use NFS uid/gid mapping if we're using AUTH_SYS or lower
785 if (nfs4_disable_idmapping
&& data
->auth_flavors
[0] == RPC_AUTH_UNIX
)
786 server
->caps
|= NFS_CAP_UIDGID_NOMAP
;
789 server
->rsize
= nfs_block_size(data
->rsize
, NULL
);
791 server
->wsize
= nfs_block_size(data
->wsize
, NULL
);
793 server
->acregmin
= data
->acregmin
* HZ
;
794 server
->acregmax
= data
->acregmax
* HZ
;
795 server
->acdirmin
= data
->acdirmin
* HZ
;
796 server
->acdirmax
= data
->acdirmax
* HZ
;
798 server
->port
= data
->nfs_server
.port
;
800 error
= nfs_init_server_rpcclient(server
, &timeparms
, data
->auth_flavors
[0]);
804 dprintk("<-- nfs4_init_server() = %d\n", error
);
809 * Create a version 4 volume record
810 * - keyed on server and FSID
812 /*struct nfs_server *nfs4_create_server(const struct nfs_parsed_mount_data *data,
813 struct nfs_fh *mntfh)*/
814 struct nfs_server
*nfs4_create_server(struct nfs_mount_info
*mount_info
,
815 struct nfs_subversion
*nfs_mod
)
817 struct nfs_server
*server
;
820 dprintk("--> nfs4_create_server()\n");
822 server
= nfs_alloc_server();
824 return ERR_PTR(-ENOMEM
);
826 /* set up the general RPC client */
827 error
= nfs4_init_server(server
, mount_info
->parsed
);
831 error
= nfs4_server_common_setup(server
, mount_info
->mntfh
);
835 dprintk("<-- nfs4_create_server() = %p\n", server
);
839 nfs_free_server(server
);
840 dprintk("<-- nfs4_create_server() = error %d\n", error
);
841 return ERR_PTR(error
);
845 * Create an NFS4 referral server record
847 struct nfs_server
*nfs4_create_referral_server(struct nfs_clone_mount
*data
,
848 struct nfs_fh
*mntfh
)
850 struct nfs_client
*parent_client
;
851 struct nfs_server
*server
, *parent_server
;
854 dprintk("--> nfs4_create_referral_server()\n");
856 server
= nfs_alloc_server();
858 return ERR_PTR(-ENOMEM
);
860 parent_server
= NFS_SB(data
->sb
);
861 parent_client
= parent_server
->nfs_client
;
863 /* Initialise the client representation from the parent server */
864 nfs_server_copy_userdata(server
, parent_server
);
865 server
->caps
|= NFS_CAP_ATOMIC_OPEN
|NFS_CAP_CHANGE_ATTR
;
867 /* Get a client representation.
868 * Note: NFSv4 always uses TCP, */
869 error
= nfs4_set_client(server
, data
->hostname
,
872 parent_client
->cl_ipaddr
,
874 rpc_protocol(parent_server
->client
),
875 parent_server
->client
->cl_timeout
,
876 parent_client
->cl_mvops
->minor_version
,
877 parent_client
->cl_net
);
881 error
= nfs_init_server_rpcclient(server
, parent_server
->client
->cl_timeout
, data
->authflavor
);
885 error
= nfs4_server_common_setup(server
, mntfh
);
889 dprintk("<-- nfs_create_referral_server() = %p\n", server
);
893 nfs_free_server(server
);
894 dprintk("<-- nfs4_create_referral_server() = error %d\n", error
);
895 return ERR_PTR(error
);