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428360d7 BS |
1 | /* |
2 | * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved. | |
3 | * Written by David Howells (dhowells@redhat.com) | |
4 | */ | |
fcf10398 | 5 | #include <linux/module.h> |
428360d7 BS |
6 | #include <linux/nfs_fs.h> |
7 | #include <linux/nfs_idmap.h> | |
fcf10398 | 8 | #include <linux/nfs_mount.h> |
428360d7 BS |
9 | #include <linux/sunrpc/auth.h> |
10 | #include <linux/sunrpc/xprt.h> | |
11 | #include <linux/sunrpc/bc_xprt.h> | |
12 | #include "internal.h" | |
13 | #include "callback.h" | |
fcf10398 BS |
14 | #include "delegation.h" |
15 | #include "pnfs.h" | |
16 | #include "netns.h" | |
428360d7 BS |
17 | |
18 | #define NFSDBG_FACILITY NFSDBG_CLIENT | |
19 | ||
fcf10398 BS |
20 | /* |
21 | * Turn off NFSv4 uid/gid mapping when using AUTH_SYS | |
22 | */ | |
23 | static bool nfs4_disable_idmapping = true; | |
24 | ||
ec409897 BS |
25 | /* |
26 | * Get a unique NFSv4.0 callback identifier which will be used | |
27 | * by the V4.0 callback service to lookup the nfs_client struct | |
28 | */ | |
29 | static int nfs_get_cb_ident_idr(struct nfs_client *clp, int minorversion) | |
30 | { | |
31 | int ret = 0; | |
32 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); | |
33 | ||
34 | if (clp->rpc_ops->version != 4 || minorversion != 0) | |
35 | return ret; | |
36 | retry: | |
37 | if (!idr_pre_get(&nn->cb_ident_idr, GFP_KERNEL)) | |
38 | return -ENOMEM; | |
39 | spin_lock(&nn->nfs_client_lock); | |
40 | ret = idr_get_new(&nn->cb_ident_idr, clp, &clp->cl_cb_ident); | |
41 | spin_unlock(&nn->nfs_client_lock); | |
42 | if (ret == -EAGAIN) | |
43 | goto retry; | |
44 | return ret; | |
45 | } | |
46 | ||
47 | #ifdef CONFIG_NFS_V4_1 | |
48 | static void nfs4_shutdown_session(struct nfs_client *clp) | |
49 | { | |
50 | if (nfs4_has_session(clp)) { | |
51 | nfs4_destroy_session(clp->cl_session); | |
52 | nfs4_destroy_clientid(clp); | |
53 | } | |
54 | ||
55 | } | |
56 | #else /* CONFIG_NFS_V4_1 */ | |
57 | static void nfs4_shutdown_session(struct nfs_client *clp) | |
58 | { | |
59 | } | |
60 | #endif /* CONFIG_NFS_V4_1 */ | |
61 | ||
62 | struct nfs_client *nfs4_alloc_client(const struct nfs_client_initdata *cl_init) | |
63 | { | |
64 | int err; | |
65 | struct nfs_client *clp = nfs_alloc_client(cl_init); | |
66 | if (IS_ERR(clp)) | |
67 | return clp; | |
68 | ||
69 | err = nfs_get_cb_ident_idr(clp, cl_init->minorversion); | |
70 | if (err) | |
71 | goto error; | |
72 | ||
73 | spin_lock_init(&clp->cl_lock); | |
74 | INIT_DELAYED_WORK(&clp->cl_renewd, nfs4_renew_state); | |
75 | rpc_init_wait_queue(&clp->cl_rpcwaitq, "NFS client"); | |
76 | clp->cl_state = 1 << NFS4CLNT_LEASE_EXPIRED; | |
77 | clp->cl_minorversion = cl_init->minorversion; | |
78 | clp->cl_mvops = nfs_v4_minor_ops[cl_init->minorversion]; | |
79 | return clp; | |
80 | ||
81 | error: | |
82 | kfree(clp); | |
83 | return ERR_PTR(err); | |
84 | } | |
85 | ||
86 | /* | |
87 | * Destroy the NFS4 callback service | |
88 | */ | |
89 | static void nfs4_destroy_callback(struct nfs_client *clp) | |
90 | { | |
91 | if (__test_and_clear_bit(NFS_CS_CALLBACK, &clp->cl_res_state)) | |
92 | nfs_callback_down(clp->cl_mvops->minor_version); | |
93 | } | |
94 | ||
95 | static void nfs4_shutdown_client(struct nfs_client *clp) | |
96 | { | |
97 | if (__test_and_clear_bit(NFS_CS_RENEWD, &clp->cl_res_state)) | |
98 | nfs4_kill_renewd(clp); | |
99 | nfs4_shutdown_session(clp); | |
100 | nfs4_destroy_callback(clp); | |
101 | if (__test_and_clear_bit(NFS_CS_IDMAP, &clp->cl_res_state)) | |
102 | nfs_idmap_delete(clp); | |
103 | ||
104 | rpc_destroy_wait_queue(&clp->cl_rpcwaitq); | |
105 | kfree(clp->cl_serverowner); | |
106 | kfree(clp->cl_serverscope); | |
107 | kfree(clp->cl_implid); | |
108 | } | |
109 | ||
110 | void nfs4_free_client(struct nfs_client *clp) | |
111 | { | |
112 | nfs4_shutdown_client(clp); | |
113 | nfs_free_client(clp); | |
114 | } | |
115 | ||
428360d7 BS |
116 | /* |
117 | * Initialize the NFS4 callback service | |
118 | */ | |
119 | static int nfs4_init_callback(struct nfs_client *clp) | |
120 | { | |
121 | int error; | |
122 | ||
123 | if (clp->rpc_ops->version == 4) { | |
124 | struct rpc_xprt *xprt; | |
125 | ||
126 | xprt = rcu_dereference_raw(clp->cl_rpcclient->cl_xprt); | |
127 | ||
128 | if (nfs4_has_session(clp)) { | |
129 | error = xprt_setup_backchannel(xprt, | |
130 | NFS41_BC_MIN_CALLBACKS); | |
131 | if (error < 0) | |
132 | return error; | |
133 | } | |
134 | ||
135 | error = nfs_callback_up(clp->cl_mvops->minor_version, xprt); | |
136 | if (error < 0) { | |
137 | dprintk("%s: failed to start callback. Error = %d\n", | |
138 | __func__, error); | |
139 | return error; | |
140 | } | |
141 | __set_bit(NFS_CS_CALLBACK, &clp->cl_res_state); | |
142 | } | |
143 | return 0; | |
144 | } | |
145 | ||
146 | /* | |
147 | * Initialize the minor version specific parts of an NFS4 client record | |
148 | */ | |
149 | static int nfs4_init_client_minor_version(struct nfs_client *clp) | |
150 | { | |
151 | #if defined(CONFIG_NFS_V4_1) | |
152 | if (clp->cl_mvops->minor_version) { | |
153 | struct nfs4_session *session = NULL; | |
154 | /* | |
155 | * Create the session and mark it expired. | |
156 | * When a SEQUENCE operation encounters the expired session | |
157 | * it will do session recovery to initialize it. | |
158 | */ | |
159 | session = nfs4_alloc_session(clp); | |
160 | if (!session) | |
161 | return -ENOMEM; | |
162 | ||
163 | clp->cl_session = session; | |
164 | /* | |
165 | * The create session reply races with the server back | |
166 | * channel probe. Mark the client NFS_CS_SESSION_INITING | |
167 | * so that the client back channel can find the | |
168 | * nfs_client struct | |
169 | */ | |
170 | nfs_mark_client_ready(clp, NFS_CS_SESSION_INITING); | |
171 | } | |
172 | #endif /* CONFIG_NFS_V4_1 */ | |
173 | ||
174 | return nfs4_init_callback(clp); | |
175 | } | |
176 | ||
177 | /** | |
178 | * nfs4_init_client - Initialise an NFS4 client record | |
179 | * | |
180 | * @clp: nfs_client to initialise | |
181 | * @timeparms: timeout parameters for underlying RPC transport | |
182 | * @ip_addr: callback IP address in presentation format | |
183 | * @authflavor: authentication flavor for underlying RPC transport | |
184 | * | |
185 | * Returns pointer to an NFS client, or an ERR_PTR value. | |
186 | */ | |
187 | struct nfs_client *nfs4_init_client(struct nfs_client *clp, | |
188 | const struct rpc_timeout *timeparms, | |
189 | const char *ip_addr, | |
190 | rpc_authflavor_t authflavour) | |
191 | { | |
192 | char buf[INET6_ADDRSTRLEN + 1]; | |
193 | int error; | |
194 | ||
195 | if (clp->cl_cons_state == NFS_CS_READY) { | |
196 | /* the client is initialised already */ | |
197 | dprintk("<-- nfs4_init_client() = 0 [already %p]\n", clp); | |
198 | return clp; | |
199 | } | |
200 | ||
201 | /* Check NFS protocol revision and initialize RPC op vector */ | |
202 | clp->rpc_ops = &nfs_v4_clientops; | |
203 | ||
204 | __set_bit(NFS_CS_DISCRTRY, &clp->cl_flags); | |
205 | error = nfs_create_rpc_client(clp, timeparms, authflavour); | |
206 | if (error < 0) | |
207 | goto error; | |
208 | ||
209 | /* If no clientaddr= option was specified, find a usable cb address */ | |
210 | if (ip_addr == NULL) { | |
211 | struct sockaddr_storage cb_addr; | |
212 | struct sockaddr *sap = (struct sockaddr *)&cb_addr; | |
213 | ||
214 | error = rpc_localaddr(clp->cl_rpcclient, sap, sizeof(cb_addr)); | |
215 | if (error < 0) | |
216 | goto error; | |
217 | error = rpc_ntop(sap, buf, sizeof(buf)); | |
218 | if (error < 0) | |
219 | goto error; | |
220 | ip_addr = (const char *)buf; | |
221 | } | |
222 | strlcpy(clp->cl_ipaddr, ip_addr, sizeof(clp->cl_ipaddr)); | |
223 | ||
224 | error = nfs_idmap_new(clp); | |
225 | if (error < 0) { | |
226 | dprintk("%s: failed to create idmapper. Error = %d\n", | |
227 | __func__, error); | |
228 | goto error; | |
229 | } | |
230 | __set_bit(NFS_CS_IDMAP, &clp->cl_res_state); | |
231 | ||
232 | error = nfs4_init_client_minor_version(clp); | |
233 | if (error < 0) | |
234 | goto error; | |
235 | ||
236 | if (!nfs4_has_session(clp)) | |
237 | nfs_mark_client_ready(clp, NFS_CS_READY); | |
238 | return clp; | |
239 | ||
240 | error: | |
241 | nfs_mark_client_ready(clp, error); | |
242 | nfs_put_client(clp); | |
243 | dprintk("<-- nfs4_init_client() = xerror %d\n", error); | |
244 | return ERR_PTR(error); | |
245 | } | |
fcf10398 BS |
246 | |
247 | static void nfs4_destroy_server(struct nfs_server *server) | |
248 | { | |
249 | nfs_server_return_all_delegations(server); | |
250 | unset_pnfs_layoutdriver(server); | |
251 | nfs4_purge_state_owners(server); | |
252 | } | |
253 | ||
254 | /* | |
255 | * NFSv4.0 callback thread helper | |
256 | * | |
257 | * Find a client by callback identifier | |
258 | */ | |
259 | struct nfs_client * | |
260 | nfs4_find_client_ident(struct net *net, int cb_ident) | |
261 | { | |
262 | struct nfs_client *clp; | |
263 | struct nfs_net *nn = net_generic(net, nfs_net_id); | |
264 | ||
265 | spin_lock(&nn->nfs_client_lock); | |
266 | clp = idr_find(&nn->cb_ident_idr, cb_ident); | |
267 | if (clp) | |
268 | atomic_inc(&clp->cl_count); | |
269 | spin_unlock(&nn->nfs_client_lock); | |
270 | return clp; | |
271 | } | |
272 | ||
273 | #if defined(CONFIG_NFS_V4_1) | |
274 | /* Common match routine for v4.0 and v4.1 callback services */ | |
275 | static bool nfs4_cb_match_client(const struct sockaddr *addr, | |
276 | struct nfs_client *clp, u32 minorversion) | |
277 | { | |
278 | struct sockaddr *clap = (struct sockaddr *)&clp->cl_addr; | |
279 | ||
280 | /* Don't match clients that failed to initialise */ | |
281 | if (!(clp->cl_cons_state == NFS_CS_READY || | |
282 | clp->cl_cons_state == NFS_CS_SESSION_INITING)) | |
283 | return false; | |
284 | ||
285 | smp_rmb(); | |
286 | ||
287 | /* Match the version and minorversion */ | |
288 | if (clp->rpc_ops->version != 4 || | |
289 | clp->cl_minorversion != minorversion) | |
290 | return false; | |
291 | ||
292 | /* Match only the IP address, not the port number */ | |
293 | if (!nfs_sockaddr_match_ipaddr(addr, clap)) | |
294 | return false; | |
295 | ||
296 | return true; | |
297 | } | |
298 | ||
299 | /* | |
300 | * NFSv4.1 callback thread helper | |
301 | * For CB_COMPOUND calls, find a client by IP address, protocol version, | |
302 | * minorversion, and sessionID | |
303 | * | |
304 | * Returns NULL if no such client | |
305 | */ | |
306 | struct nfs_client * | |
307 | nfs4_find_client_sessionid(struct net *net, const struct sockaddr *addr, | |
308 | struct nfs4_sessionid *sid) | |
309 | { | |
310 | struct nfs_client *clp; | |
311 | struct nfs_net *nn = net_generic(net, nfs_net_id); | |
312 | ||
313 | spin_lock(&nn->nfs_client_lock); | |
314 | list_for_each_entry(clp, &nn->nfs_client_list, cl_share_link) { | |
315 | if (nfs4_cb_match_client(addr, clp, 1) == false) | |
316 | continue; | |
317 | ||
318 | if (!nfs4_has_session(clp)) | |
319 | continue; | |
320 | ||
321 | /* Match sessionid*/ | |
322 | if (memcmp(clp->cl_session->sess_id.data, | |
323 | sid->data, NFS4_MAX_SESSIONID_LEN) != 0) | |
324 | continue; | |
325 | ||
326 | atomic_inc(&clp->cl_count); | |
327 | spin_unlock(&nn->nfs_client_lock); | |
328 | return clp; | |
329 | } | |
330 | spin_unlock(&nn->nfs_client_lock); | |
331 | return NULL; | |
332 | } | |
333 | ||
334 | #else /* CONFIG_NFS_V4_1 */ | |
335 | ||
336 | struct nfs_client * | |
337 | nfs4_find_client_sessionid(struct net *net, const struct sockaddr *addr, | |
338 | struct nfs4_sessionid *sid) | |
339 | { | |
340 | return NULL; | |
341 | } | |
342 | #endif /* CONFIG_NFS_V4_1 */ | |
343 | ||
344 | /* | |
345 | * Set up an NFS4 client | |
346 | */ | |
347 | static int nfs4_set_client(struct nfs_server *server, | |
348 | const char *hostname, | |
349 | const struct sockaddr *addr, | |
350 | const size_t addrlen, | |
351 | const char *ip_addr, | |
352 | rpc_authflavor_t authflavour, | |
353 | int proto, const struct rpc_timeout *timeparms, | |
354 | u32 minorversion, struct net *net) | |
355 | { | |
356 | struct nfs_client_initdata cl_init = { | |
357 | .hostname = hostname, | |
358 | .addr = addr, | |
359 | .addrlen = addrlen, | |
360 | .rpc_ops = &nfs_v4_clientops, | |
361 | .proto = proto, | |
362 | .minorversion = minorversion, | |
363 | .net = net, | |
364 | }; | |
365 | struct nfs_client *clp; | |
366 | int error; | |
367 | ||
368 | dprintk("--> nfs4_set_client()\n"); | |
369 | ||
370 | if (server->flags & NFS_MOUNT_NORESVPORT) | |
371 | set_bit(NFS_CS_NORESVPORT, &cl_init.init_flags); | |
372 | ||
373 | /* Allocate or find a client reference we can use */ | |
374 | clp = nfs_get_client(&cl_init, timeparms, ip_addr, authflavour); | |
375 | if (IS_ERR(clp)) { | |
376 | error = PTR_ERR(clp); | |
377 | goto error; | |
378 | } | |
379 | ||
380 | /* | |
381 | * Query for the lease time on clientid setup or renewal | |
382 | * | |
383 | * Note that this will be set on nfs_clients that were created | |
384 | * only for the DS role and did not set this bit, but now will | |
385 | * serve a dual role. | |
386 | */ | |
387 | set_bit(NFS_CS_CHECK_LEASE_TIME, &clp->cl_res_state); | |
388 | ||
389 | server->nfs_client = clp; | |
390 | dprintk("<-- nfs4_set_client() = 0 [new %p]\n", clp); | |
391 | return 0; | |
392 | error: | |
393 | dprintk("<-- nfs4_set_client() = xerror %d\n", error); | |
394 | return error; | |
395 | } | |
396 | ||
397 | /* | |
398 | * Set up a pNFS Data Server client. | |
399 | * | |
400 | * Return any existing nfs_client that matches server address,port,version | |
401 | * and minorversion. | |
402 | * | |
403 | * For a new nfs_client, use a soft mount (default), a low retrans and a | |
404 | * low timeout interval so that if a connection is lost, we retry through | |
405 | * the MDS. | |
406 | */ | |
407 | struct nfs_client *nfs4_set_ds_client(struct nfs_client* mds_clp, | |
408 | const struct sockaddr *ds_addr, int ds_addrlen, | |
409 | int ds_proto, unsigned int ds_timeo, unsigned int ds_retrans) | |
410 | { | |
411 | struct nfs_client_initdata cl_init = { | |
412 | .addr = ds_addr, | |
413 | .addrlen = ds_addrlen, | |
414 | .rpc_ops = &nfs_v4_clientops, | |
415 | .proto = ds_proto, | |
416 | .minorversion = mds_clp->cl_minorversion, | |
417 | .net = mds_clp->cl_net, | |
418 | }; | |
419 | struct rpc_timeout ds_timeout; | |
420 | struct nfs_client *clp; | |
421 | ||
422 | /* | |
423 | * Set an authflavor equual to the MDS value. Use the MDS nfs_client | |
424 | * cl_ipaddr so as to use the same EXCHANGE_ID co_ownerid as the MDS | |
425 | * (section 13.1 RFC 5661). | |
426 | */ | |
427 | nfs_init_timeout_values(&ds_timeout, ds_proto, ds_timeo, ds_retrans); | |
428 | clp = nfs_get_client(&cl_init, &ds_timeout, mds_clp->cl_ipaddr, | |
429 | mds_clp->cl_rpcclient->cl_auth->au_flavor); | |
430 | ||
431 | dprintk("<-- %s %p\n", __func__, clp); | |
432 | return clp; | |
433 | } | |
434 | EXPORT_SYMBOL_GPL(nfs4_set_ds_client); | |
435 | ||
436 | /* | |
437 | * Session has been established, and the client marked ready. | |
438 | * Set the mount rsize and wsize with negotiated fore channel | |
439 | * attributes which will be bound checked in nfs_server_set_fsinfo. | |
440 | */ | |
441 | static void nfs4_session_set_rwsize(struct nfs_server *server) | |
442 | { | |
443 | #ifdef CONFIG_NFS_V4_1 | |
444 | struct nfs4_session *sess; | |
445 | u32 server_resp_sz; | |
446 | u32 server_rqst_sz; | |
447 | ||
448 | if (!nfs4_has_session(server->nfs_client)) | |
449 | return; | |
450 | sess = server->nfs_client->cl_session; | |
451 | server_resp_sz = sess->fc_attrs.max_resp_sz - nfs41_maxread_overhead; | |
452 | server_rqst_sz = sess->fc_attrs.max_rqst_sz - nfs41_maxwrite_overhead; | |
453 | ||
454 | if (server->rsize > server_resp_sz) | |
455 | server->rsize = server_resp_sz; | |
456 | if (server->wsize > server_rqst_sz) | |
457 | server->wsize = server_rqst_sz; | |
458 | #endif /* CONFIG_NFS_V4_1 */ | |
459 | } | |
460 | ||
461 | static int nfs4_server_common_setup(struct nfs_server *server, | |
462 | struct nfs_fh *mntfh) | |
463 | { | |
464 | struct nfs_fattr *fattr; | |
465 | int error; | |
466 | ||
467 | BUG_ON(!server->nfs_client); | |
468 | BUG_ON(!server->nfs_client->rpc_ops); | |
469 | BUG_ON(!server->nfs_client->rpc_ops->file_inode_ops); | |
470 | ||
471 | /* data servers support only a subset of NFSv4.1 */ | |
472 | if (is_ds_only_client(server->nfs_client)) | |
473 | return -EPROTONOSUPPORT; | |
474 | ||
475 | fattr = nfs_alloc_fattr(); | |
476 | if (fattr == NULL) | |
477 | return -ENOMEM; | |
478 | ||
479 | /* We must ensure the session is initialised first */ | |
480 | error = nfs4_init_session(server); | |
481 | if (error < 0) | |
482 | goto out; | |
483 | ||
484 | /* Probe the root fh to retrieve its FSID and filehandle */ | |
485 | error = nfs4_get_rootfh(server, mntfh); | |
486 | if (error < 0) | |
487 | goto out; | |
488 | ||
489 | dprintk("Server FSID: %llx:%llx\n", | |
490 | (unsigned long long) server->fsid.major, | |
491 | (unsigned long long) server->fsid.minor); | |
492 | dprintk("Mount FH: %d\n", mntfh->size); | |
493 | ||
494 | nfs4_session_set_rwsize(server); | |
495 | ||
496 | error = nfs_probe_fsinfo(server, mntfh, fattr); | |
497 | if (error < 0) | |
498 | goto out; | |
499 | ||
500 | if (server->namelen == 0 || server->namelen > NFS4_MAXNAMLEN) | |
501 | server->namelen = NFS4_MAXNAMLEN; | |
502 | ||
503 | nfs_server_insert_lists(server); | |
504 | server->mount_time = jiffies; | |
505 | server->destroy = nfs4_destroy_server; | |
506 | out: | |
507 | nfs_free_fattr(fattr); | |
508 | return error; | |
509 | } | |
510 | ||
511 | /* | |
512 | * Create a version 4 volume record | |
513 | */ | |
514 | static int nfs4_init_server(struct nfs_server *server, | |
515 | const struct nfs_parsed_mount_data *data) | |
516 | { | |
517 | struct rpc_timeout timeparms; | |
518 | int error; | |
519 | ||
520 | dprintk("--> nfs4_init_server()\n"); | |
521 | ||
522 | nfs_init_timeout_values(&timeparms, data->nfs_server.protocol, | |
523 | data->timeo, data->retrans); | |
524 | ||
525 | /* Initialise the client representation from the mount data */ | |
526 | server->flags = data->flags; | |
527 | server->caps |= NFS_CAP_ATOMIC_OPEN|NFS_CAP_CHANGE_ATTR|NFS_CAP_POSIX_LOCK; | |
528 | if (!(data->flags & NFS_MOUNT_NORDIRPLUS)) | |
529 | server->caps |= NFS_CAP_READDIRPLUS; | |
530 | server->options = data->options; | |
531 | ||
532 | /* Get a client record */ | |
533 | error = nfs4_set_client(server, | |
534 | data->nfs_server.hostname, | |
535 | (const struct sockaddr *)&data->nfs_server.address, | |
536 | data->nfs_server.addrlen, | |
537 | data->client_address, | |
538 | data->auth_flavors[0], | |
539 | data->nfs_server.protocol, | |
540 | &timeparms, | |
541 | data->minorversion, | |
542 | data->net); | |
543 | if (error < 0) | |
544 | goto error; | |
545 | ||
546 | /* | |
547 | * Don't use NFS uid/gid mapping if we're using AUTH_SYS or lower | |
548 | * authentication. | |
549 | */ | |
550 | if (nfs4_disable_idmapping && data->auth_flavors[0] == RPC_AUTH_UNIX) | |
551 | server->caps |= NFS_CAP_UIDGID_NOMAP; | |
552 | ||
553 | if (data->rsize) | |
554 | server->rsize = nfs_block_size(data->rsize, NULL); | |
555 | if (data->wsize) | |
556 | server->wsize = nfs_block_size(data->wsize, NULL); | |
557 | ||
558 | server->acregmin = data->acregmin * HZ; | |
559 | server->acregmax = data->acregmax * HZ; | |
560 | server->acdirmin = data->acdirmin * HZ; | |
561 | server->acdirmax = data->acdirmax * HZ; | |
562 | ||
563 | server->port = data->nfs_server.port; | |
564 | ||
565 | error = nfs_init_server_rpcclient(server, &timeparms, data->auth_flavors[0]); | |
566 | ||
567 | error: | |
568 | /* Done */ | |
569 | dprintk("<-- nfs4_init_server() = %d\n", error); | |
570 | return error; | |
571 | } | |
572 | ||
573 | /* | |
574 | * Create a version 4 volume record | |
575 | * - keyed on server and FSID | |
576 | */ | |
577 | struct nfs_server *nfs4_create_server(const struct nfs_parsed_mount_data *data, | |
578 | struct nfs_fh *mntfh) | |
579 | { | |
580 | struct nfs_server *server; | |
581 | int error; | |
582 | ||
583 | dprintk("--> nfs4_create_server()\n"); | |
584 | ||
585 | server = nfs_alloc_server(); | |
586 | if (!server) | |
587 | return ERR_PTR(-ENOMEM); | |
588 | ||
589 | /* set up the general RPC client */ | |
590 | error = nfs4_init_server(server, data); | |
591 | if (error < 0) | |
592 | goto error; | |
593 | ||
594 | error = nfs4_server_common_setup(server, mntfh); | |
595 | if (error < 0) | |
596 | goto error; | |
597 | ||
598 | dprintk("<-- nfs4_create_server() = %p\n", server); | |
599 | return server; | |
600 | ||
601 | error: | |
602 | nfs_free_server(server); | |
603 | dprintk("<-- nfs4_create_server() = error %d\n", error); | |
604 | return ERR_PTR(error); | |
605 | } | |
606 | ||
607 | /* | |
608 | * Create an NFS4 referral server record | |
609 | */ | |
610 | struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data, | |
611 | struct nfs_fh *mntfh) | |
612 | { | |
613 | struct nfs_client *parent_client; | |
614 | struct nfs_server *server, *parent_server; | |
615 | int error; | |
616 | ||
617 | dprintk("--> nfs4_create_referral_server()\n"); | |
618 | ||
619 | server = nfs_alloc_server(); | |
620 | if (!server) | |
621 | return ERR_PTR(-ENOMEM); | |
622 | ||
623 | parent_server = NFS_SB(data->sb); | |
624 | parent_client = parent_server->nfs_client; | |
625 | ||
626 | /* Initialise the client representation from the parent server */ | |
627 | nfs_server_copy_userdata(server, parent_server); | |
628 | server->caps |= NFS_CAP_ATOMIC_OPEN|NFS_CAP_CHANGE_ATTR; | |
629 | ||
630 | /* Get a client representation. | |
631 | * Note: NFSv4 always uses TCP, */ | |
632 | error = nfs4_set_client(server, data->hostname, | |
633 | data->addr, | |
634 | data->addrlen, | |
635 | parent_client->cl_ipaddr, | |
636 | data->authflavor, | |
637 | rpc_protocol(parent_server->client), | |
638 | parent_server->client->cl_timeout, | |
639 | parent_client->cl_mvops->minor_version, | |
640 | parent_client->cl_net); | |
641 | if (error < 0) | |
642 | goto error; | |
643 | ||
644 | error = nfs_init_server_rpcclient(server, parent_server->client->cl_timeout, data->authflavor); | |
645 | if (error < 0) | |
646 | goto error; | |
647 | ||
648 | error = nfs4_server_common_setup(server, mntfh); | |
649 | if (error < 0) | |
650 | goto error; | |
651 | ||
652 | dprintk("<-- nfs_create_referral_server() = %p\n", server); | |
653 | return server; | |
654 | ||
655 | error: | |
656 | nfs_free_server(server); | |
657 | dprintk("<-- nfs4_create_referral_server() = error %d\n", error); | |
658 | return ERR_PTR(error); | |
659 | } | |
660 | ||
661 | module_param(nfs4_disable_idmapping, bool, 0644); | |
662 | MODULE_PARM_DESC(nfs4_disable_idmapping, | |
663 | "Turn off NFSv4 idmapping when using 'sec=sys'"); |