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"
18 #define NFSDBG_FACILITY NFSDBG_CLIENT
21 * Get a unique NFSv4.0 callback identifier which will be used
22 * by the V4.0 callback service to lookup the nfs_client struct
24 static int nfs_get_cb_ident_idr(struct nfs_client
*clp
, int minorversion
)
27 struct nfs_net
*nn
= net_generic(clp
->cl_net
, nfs_net_id
);
29 if (clp
->rpc_ops
->version
!= 4 || minorversion
!= 0)
32 if (!idr_pre_get(&nn
->cb_ident_idr
, GFP_KERNEL
))
34 spin_lock(&nn
->nfs_client_lock
);
35 ret
= idr_get_new(&nn
->cb_ident_idr
, clp
, &clp
->cl_cb_ident
);
36 spin_unlock(&nn
->nfs_client_lock
);
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
);
239 clp
->cl_preserve_clid
= true;
242 atomic_inc(&clp
->cl_count
);
248 nfs_mark_client_ready(clp
, error
);
250 dprintk("<-- nfs4_init_client() = xerror %d\n", error
);
251 return ERR_PTR(error
);
255 * SETCLIENTID just did a callback update with the callback ident in
256 * "drop," but server trunking discovery claims "drop" and "keep" are
257 * actually the same server. Swap the callback IDs so that "keep"
258 * will continue to use the callback ident the server now knows about,
259 * and so that "keep"'s original callback ident is destroyed when
262 static void nfs4_swap_callback_idents(struct nfs_client
*keep
,
263 struct nfs_client
*drop
)
265 struct nfs_net
*nn
= net_generic(keep
->cl_net
, nfs_net_id
);
266 unsigned int save
= keep
->cl_cb_ident
;
268 if (keep
->cl_cb_ident
== drop
->cl_cb_ident
)
271 dprintk("%s: keeping callback ident %u and dropping ident %u\n",
272 __func__
, keep
->cl_cb_ident
, drop
->cl_cb_ident
);
274 spin_lock(&nn
->nfs_client_lock
);
276 idr_replace(&nn
->cb_ident_idr
, keep
, drop
->cl_cb_ident
);
277 keep
->cl_cb_ident
= drop
->cl_cb_ident
;
279 idr_replace(&nn
->cb_ident_idr
, drop
, save
);
280 drop
->cl_cb_ident
= save
;
282 spin_unlock(&nn
->nfs_client_lock
);
286 * nfs40_walk_client_list - Find server that recognizes a client ID
288 * @new: nfs_client with client ID to test
289 * @result: OUT: found nfs_client, or new
290 * @cred: credential to use for trunking test
292 * Returns zero, a negative errno, or a negative NFS4ERR status.
293 * If zero is returned, an nfs_client pointer is planted in "result."
295 * NB: nfs40_walk_client_list() relies on the new nfs_client being
296 * the last nfs_client on the list.
298 int nfs40_walk_client_list(struct nfs_client
*new,
299 struct nfs_client
**result
,
300 struct rpc_cred
*cred
)
302 struct nfs_net
*nn
= net_generic(new->cl_net
, nfs_net_id
);
303 struct nfs_client
*pos
, *n
, *prev
= NULL
;
304 struct nfs4_setclientid_res clid
= {
305 .clientid
= new->cl_clientid
,
306 .confirm
= new->cl_confirm
,
310 spin_lock(&nn
->nfs_client_lock
);
311 list_for_each_entry_safe(pos
, n
, &nn
->nfs_client_list
, cl_share_link
) {
312 /* If "pos" isn't marked ready, we can't trust the
313 * remaining fields in "pos" */
314 if (pos
->cl_cons_state
< NFS_CS_READY
)
317 if (pos
->rpc_ops
!= new->rpc_ops
)
320 if (pos
->cl_proto
!= new->cl_proto
)
323 if (pos
->cl_minorversion
!= new->cl_minorversion
)
326 if (pos
->cl_clientid
!= new->cl_clientid
)
329 atomic_inc(&pos
->cl_count
);
330 spin_unlock(&nn
->nfs_client_lock
);
333 nfs_put_client(prev
);
335 status
= nfs4_proc_setclientid_confirm(pos
, &clid
, cred
);
337 nfs4_swap_callback_idents(pos
, new);
341 dprintk("NFS: <-- %s using nfs_client = %p ({%d})\n",
342 __func__
, pos
, atomic_read(&pos
->cl_count
));
345 if (status
!= -NFS4ERR_STALE_CLIENTID
) {
347 dprintk("NFS: <-- %s status = %d, no result\n",
352 spin_lock(&nn
->nfs_client_lock
);
357 * No matching nfs_client found. This should be impossible,
358 * because the new nfs_client has already been added to
359 * nfs_client_list by nfs_get_client().
361 * Don't BUG(), since the caller is holding a mutex.
364 nfs_put_client(prev
);
365 spin_unlock(&nn
->nfs_client_lock
);
366 pr_err("NFS: %s Error: no matching nfs_client found\n", __func__
);
367 return -NFS4ERR_STALE_CLIENTID
;
370 #ifdef CONFIG_NFS_V4_1
372 * Returns true if the client IDs match
374 static bool nfs4_match_clientids(struct nfs_client
*a
, struct nfs_client
*b
)
376 if (a
->cl_clientid
!= b
->cl_clientid
) {
377 dprintk("NFS: --> %s client ID %llx does not match %llx\n",
378 __func__
, a
->cl_clientid
, b
->cl_clientid
);
381 dprintk("NFS: --> %s client ID %llx matches %llx\n",
382 __func__
, a
->cl_clientid
, b
->cl_clientid
);
387 * Returns true if the server owners match
390 nfs4_match_serverowners(struct nfs_client
*a
, struct nfs_client
*b
)
392 struct nfs41_server_owner
*o1
= a
->cl_serverowner
;
393 struct nfs41_server_owner
*o2
= b
->cl_serverowner
;
395 if (o1
->minor_id
!= o2
->minor_id
) {
396 dprintk("NFS: --> %s server owner minor IDs do not match\n",
401 if (o1
->major_id_sz
!= o2
->major_id_sz
)
402 goto out_major_mismatch
;
403 if (memcmp(o1
->major_id
, o2
->major_id
, o1
->major_id_sz
) != 0)
404 goto out_major_mismatch
;
406 dprintk("NFS: --> %s server owners match\n", __func__
);
410 dprintk("NFS: --> %s server owner major IDs do not match\n",
416 * nfs41_walk_client_list - Find nfs_client that matches a client/server owner
418 * @new: nfs_client with client ID to test
419 * @result: OUT: found nfs_client, or new
420 * @cred: credential to use for trunking test
422 * Returns zero, a negative errno, or a negative NFS4ERR status.
423 * If zero is returned, an nfs_client pointer is planted in "result."
425 * NB: nfs41_walk_client_list() relies on the new nfs_client being
426 * the last nfs_client on the list.
428 int nfs41_walk_client_list(struct nfs_client
*new,
429 struct nfs_client
**result
,
430 struct rpc_cred
*cred
)
432 struct nfs_net
*nn
= net_generic(new->cl_net
, nfs_net_id
);
433 struct nfs_client
*pos
, *n
, *prev
= NULL
;
436 spin_lock(&nn
->nfs_client_lock
);
437 list_for_each_entry_safe(pos
, n
, &nn
->nfs_client_list
, cl_share_link
) {
438 /* If "pos" isn't marked ready, we can't trust the
439 * remaining fields in "pos", especially the client
440 * ID and serverowner fields. Wait for CREATE_SESSION
442 if (pos
->cl_cons_state
< NFS_CS_READY
) {
443 atomic_inc(&pos
->cl_count
);
444 spin_unlock(&nn
->nfs_client_lock
);
447 nfs_put_client(prev
);
450 error
= nfs_wait_client_init_complete(pos
);
453 spin_lock(&nn
->nfs_client_lock
);
457 spin_lock(&nn
->nfs_client_lock
);
460 if (pos
->rpc_ops
!= new->rpc_ops
)
463 if (pos
->cl_proto
!= new->cl_proto
)
466 if (pos
->cl_minorversion
!= new->cl_minorversion
)
469 if (!nfs4_match_clientids(pos
, new))
472 if (!nfs4_match_serverowners(pos
, new))
475 spin_unlock(&nn
->nfs_client_lock
);
476 dprintk("NFS: <-- %s using nfs_client = %p ({%d})\n",
477 __func__
, pos
, atomic_read(&pos
->cl_count
));
484 * No matching nfs_client found. This should be impossible,
485 * because the new nfs_client has already been added to
486 * nfs_client_list by nfs_get_client().
488 * Don't BUG(), since the caller is holding a mutex.
490 spin_unlock(&nn
->nfs_client_lock
);
491 pr_err("NFS: %s Error: no matching nfs_client found\n", __func__
);
492 return -NFS4ERR_STALE_CLIENTID
;
494 #endif /* CONFIG_NFS_V4_1 */
496 static void nfs4_destroy_server(struct nfs_server
*server
)
498 nfs_server_return_all_delegations(server
);
499 unset_pnfs_layoutdriver(server
);
500 nfs4_purge_state_owners(server
);
504 * NFSv4.0 callback thread helper
506 * Find a client by callback identifier
509 nfs4_find_client_ident(struct net
*net
, int cb_ident
)
511 struct nfs_client
*clp
;
512 struct nfs_net
*nn
= net_generic(net
, nfs_net_id
);
514 spin_lock(&nn
->nfs_client_lock
);
515 clp
= idr_find(&nn
->cb_ident_idr
, cb_ident
);
517 atomic_inc(&clp
->cl_count
);
518 spin_unlock(&nn
->nfs_client_lock
);
522 #if defined(CONFIG_NFS_V4_1)
523 /* Common match routine for v4.0 and v4.1 callback services */
524 static bool nfs4_cb_match_client(const struct sockaddr
*addr
,
525 struct nfs_client
*clp
, u32 minorversion
)
527 struct sockaddr
*clap
= (struct sockaddr
*)&clp
->cl_addr
;
529 /* Don't match clients that failed to initialise */
530 if (!(clp
->cl_cons_state
== NFS_CS_READY
||
531 clp
->cl_cons_state
== NFS_CS_SESSION_INITING
))
536 /* Match the version and minorversion */
537 if (clp
->rpc_ops
->version
!= 4 ||
538 clp
->cl_minorversion
!= minorversion
)
541 /* Match only the IP address, not the port number */
542 if (!nfs_sockaddr_match_ipaddr(addr
, clap
))
549 * NFSv4.1 callback thread helper
550 * For CB_COMPOUND calls, find a client by IP address, protocol version,
551 * minorversion, and sessionID
553 * Returns NULL if no such client
556 nfs4_find_client_sessionid(struct net
*net
, const struct sockaddr
*addr
,
557 struct nfs4_sessionid
*sid
)
559 struct nfs_client
*clp
;
560 struct nfs_net
*nn
= net_generic(net
, nfs_net_id
);
562 spin_lock(&nn
->nfs_client_lock
);
563 list_for_each_entry(clp
, &nn
->nfs_client_list
, cl_share_link
) {
564 if (nfs4_cb_match_client(addr
, clp
, 1) == false)
567 if (!nfs4_has_session(clp
))
571 if (memcmp(clp
->cl_session
->sess_id
.data
,
572 sid
->data
, NFS4_MAX_SESSIONID_LEN
) != 0)
575 atomic_inc(&clp
->cl_count
);
576 spin_unlock(&nn
->nfs_client_lock
);
579 spin_unlock(&nn
->nfs_client_lock
);
583 #else /* CONFIG_NFS_V4_1 */
586 nfs4_find_client_sessionid(struct net
*net
, const struct sockaddr
*addr
,
587 struct nfs4_sessionid
*sid
)
591 #endif /* CONFIG_NFS_V4_1 */
594 * Set up an NFS4 client
596 static int nfs4_set_client(struct nfs_server
*server
,
597 const char *hostname
,
598 const struct sockaddr
*addr
,
599 const size_t addrlen
,
601 rpc_authflavor_t authflavour
,
602 int proto
, const struct rpc_timeout
*timeparms
,
603 u32 minorversion
, struct net
*net
)
605 struct nfs_client_initdata cl_init
= {
606 .hostname
= hostname
,
611 .minorversion
= minorversion
,
614 struct nfs_client
*clp
;
617 dprintk("--> nfs4_set_client()\n");
619 if (server
->flags
& NFS_MOUNT_NORESVPORT
)
620 set_bit(NFS_CS_NORESVPORT
, &cl_init
.init_flags
);
622 /* Allocate or find a client reference we can use */
623 clp
= nfs_get_client(&cl_init
, timeparms
, ip_addr
, authflavour
);
625 error
= PTR_ERR(clp
);
630 * Query for the lease time on clientid setup or renewal
632 * Note that this will be set on nfs_clients that were created
633 * only for the DS role and did not set this bit, but now will
636 set_bit(NFS_CS_CHECK_LEASE_TIME
, &clp
->cl_res_state
);
638 server
->nfs_client
= clp
;
639 dprintk("<-- nfs4_set_client() = 0 [new %p]\n", clp
);
642 dprintk("<-- nfs4_set_client() = xerror %d\n", error
);
647 * Set up a pNFS Data Server client.
649 * Return any existing nfs_client that matches server address,port,version
652 * For a new nfs_client, use a soft mount (default), a low retrans and a
653 * low timeout interval so that if a connection is lost, we retry through
656 struct nfs_client
*nfs4_set_ds_client(struct nfs_client
* mds_clp
,
657 const struct sockaddr
*ds_addr
, int ds_addrlen
,
658 int ds_proto
, unsigned int ds_timeo
, unsigned int ds_retrans
)
660 struct nfs_client_initdata cl_init
= {
662 .addrlen
= ds_addrlen
,
665 .minorversion
= mds_clp
->cl_minorversion
,
666 .net
= mds_clp
->cl_net
,
668 struct rpc_timeout ds_timeout
;
669 struct nfs_client
*clp
;
672 * Set an authflavor equual to the MDS value. Use the MDS nfs_client
673 * cl_ipaddr so as to use the same EXCHANGE_ID co_ownerid as the MDS
674 * (section 13.1 RFC 5661).
676 nfs_init_timeout_values(&ds_timeout
, ds_proto
, ds_timeo
, ds_retrans
);
677 clp
= nfs_get_client(&cl_init
, &ds_timeout
, mds_clp
->cl_ipaddr
,
678 mds_clp
->cl_rpcclient
->cl_auth
->au_flavor
);
680 dprintk("<-- %s %p\n", __func__
, clp
);
683 EXPORT_SYMBOL_GPL(nfs4_set_ds_client
);
686 * Session has been established, and the client marked ready.
687 * Set the mount rsize and wsize with negotiated fore channel
688 * attributes which will be bound checked in nfs_server_set_fsinfo.
690 static void nfs4_session_set_rwsize(struct nfs_server
*server
)
692 #ifdef CONFIG_NFS_V4_1
693 struct nfs4_session
*sess
;
697 if (!nfs4_has_session(server
->nfs_client
))
699 sess
= server
->nfs_client
->cl_session
;
700 server_resp_sz
= sess
->fc_attrs
.max_resp_sz
- nfs41_maxread_overhead
;
701 server_rqst_sz
= sess
->fc_attrs
.max_rqst_sz
- nfs41_maxwrite_overhead
;
703 if (server
->rsize
> server_resp_sz
)
704 server
->rsize
= server_resp_sz
;
705 if (server
->wsize
> server_rqst_sz
)
706 server
->wsize
= server_rqst_sz
;
707 #endif /* CONFIG_NFS_V4_1 */
710 static int nfs4_server_common_setup(struct nfs_server
*server
,
711 struct nfs_fh
*mntfh
)
713 struct nfs_fattr
*fattr
;
716 BUG_ON(!server
->nfs_client
);
717 BUG_ON(!server
->nfs_client
->rpc_ops
);
718 BUG_ON(!server
->nfs_client
->rpc_ops
->file_inode_ops
);
720 /* data servers support only a subset of NFSv4.1 */
721 if (is_ds_only_client(server
->nfs_client
))
722 return -EPROTONOSUPPORT
;
724 fattr
= nfs_alloc_fattr();
728 /* We must ensure the session is initialised first */
729 error
= nfs4_init_session(server
);
733 /* Probe the root fh to retrieve its FSID and filehandle */
734 error
= nfs4_get_rootfh(server
, mntfh
);
738 dprintk("Server FSID: %llx:%llx\n",
739 (unsigned long long) server
->fsid
.major
,
740 (unsigned long long) server
->fsid
.minor
);
741 dprintk("Mount FH: %d\n", mntfh
->size
);
743 nfs4_session_set_rwsize(server
);
745 error
= nfs_probe_fsinfo(server
, mntfh
, fattr
);
749 if (server
->namelen
== 0 || server
->namelen
> NFS4_MAXNAMLEN
)
750 server
->namelen
= NFS4_MAXNAMLEN
;
752 nfs_server_insert_lists(server
);
753 server
->mount_time
= jiffies
;
754 server
->destroy
= nfs4_destroy_server
;
756 nfs_free_fattr(fattr
);
761 * Create a version 4 volume record
763 static int nfs4_init_server(struct nfs_server
*server
,
764 const struct nfs_parsed_mount_data
*data
)
766 struct rpc_timeout timeparms
;
769 dprintk("--> nfs4_init_server()\n");
771 nfs_init_timeout_values(&timeparms
, data
->nfs_server
.protocol
,
772 data
->timeo
, data
->retrans
);
774 /* Initialise the client representation from the mount data */
775 server
->flags
= data
->flags
;
776 server
->caps
|= NFS_CAP_ATOMIC_OPEN
|NFS_CAP_CHANGE_ATTR
|NFS_CAP_POSIX_LOCK
;
777 if (!(data
->flags
& NFS_MOUNT_NORDIRPLUS
))
778 server
->caps
|= NFS_CAP_READDIRPLUS
;
779 server
->options
= data
->options
;
781 /* Get a client record */
782 error
= nfs4_set_client(server
,
783 data
->nfs_server
.hostname
,
784 (const struct sockaddr
*)&data
->nfs_server
.address
,
785 data
->nfs_server
.addrlen
,
786 data
->client_address
,
787 data
->auth_flavors
[0],
788 data
->nfs_server
.protocol
,
796 * Don't use NFS uid/gid mapping if we're using AUTH_SYS or lower
799 if (nfs4_disable_idmapping
&& data
->auth_flavors
[0] == RPC_AUTH_UNIX
)
800 server
->caps
|= NFS_CAP_UIDGID_NOMAP
;
803 server
->rsize
= nfs_block_size(data
->rsize
, NULL
);
805 server
->wsize
= nfs_block_size(data
->wsize
, NULL
);
807 server
->acregmin
= data
->acregmin
* HZ
;
808 server
->acregmax
= data
->acregmax
* HZ
;
809 server
->acdirmin
= data
->acdirmin
* HZ
;
810 server
->acdirmax
= data
->acdirmax
* HZ
;
812 server
->port
= data
->nfs_server
.port
;
814 error
= nfs_init_server_rpcclient(server
, &timeparms
, data
->auth_flavors
[0]);
818 dprintk("<-- nfs4_init_server() = %d\n", error
);
823 * Create a version 4 volume record
824 * - keyed on server and FSID
826 /*struct nfs_server *nfs4_create_server(const struct nfs_parsed_mount_data *data,
827 struct nfs_fh *mntfh)*/
828 struct nfs_server
*nfs4_create_server(struct nfs_mount_info
*mount_info
,
829 struct nfs_subversion
*nfs_mod
)
831 struct nfs_server
*server
;
834 dprintk("--> nfs4_create_server()\n");
836 server
= nfs_alloc_server();
838 return ERR_PTR(-ENOMEM
);
840 /* set up the general RPC client */
841 error
= nfs4_init_server(server
, mount_info
->parsed
);
845 error
= nfs4_server_common_setup(server
, mount_info
->mntfh
);
849 dprintk("<-- nfs4_create_server() = %p\n", server
);
853 nfs_free_server(server
);
854 dprintk("<-- nfs4_create_server() = error %d\n", error
);
855 return ERR_PTR(error
);
859 * Create an NFS4 referral server record
861 struct nfs_server
*nfs4_create_referral_server(struct nfs_clone_mount
*data
,
862 struct nfs_fh
*mntfh
)
864 struct nfs_client
*parent_client
;
865 struct nfs_server
*server
, *parent_server
;
868 dprintk("--> nfs4_create_referral_server()\n");
870 server
= nfs_alloc_server();
872 return ERR_PTR(-ENOMEM
);
874 parent_server
= NFS_SB(data
->sb
);
875 parent_client
= parent_server
->nfs_client
;
877 /* Initialise the client representation from the parent server */
878 nfs_server_copy_userdata(server
, parent_server
);
879 server
->caps
|= NFS_CAP_ATOMIC_OPEN
|NFS_CAP_CHANGE_ATTR
;
881 /* Get a client representation.
882 * Note: NFSv4 always uses TCP, */
883 error
= nfs4_set_client(server
, data
->hostname
,
886 parent_client
->cl_ipaddr
,
888 rpc_protocol(parent_server
->client
),
889 parent_server
->client
->cl_timeout
,
890 parent_client
->cl_mvops
->minor_version
,
891 parent_client
->cl_net
);
895 error
= nfs_init_server_rpcclient(server
, parent_server
->client
->cl_timeout
, data
->authflavor
);
899 error
= nfs4_server_common_setup(server
, mntfh
);
903 dprintk("<-- nfs_create_referral_server() = %p\n", server
);
907 nfs_free_server(server
);
908 dprintk("<-- nfs4_create_referral_server() = error %d\n", error
);
909 return ERR_PTR(error
);