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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 | ||
ec409897 BS |
20 | /* |
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 | |
23 | */ | |
24 | static int nfs_get_cb_ident_idr(struct nfs_client *clp, int minorversion) | |
25 | { | |
26 | int ret = 0; | |
27 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); | |
28 | ||
29 | if (clp->rpc_ops->version != 4 || minorversion != 0) | |
30 | return ret; | |
31 | retry: | |
32 | if (!idr_pre_get(&nn->cb_ident_idr, GFP_KERNEL)) | |
33 | return -ENOMEM; | |
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); | |
37 | if (ret == -EAGAIN) | |
38 | goto retry; | |
39 | return ret; | |
40 | } | |
41 | ||
42 | #ifdef CONFIG_NFS_V4_1 | |
43 | static void nfs4_shutdown_session(struct nfs_client *clp) | |
44 | { | |
45 | if (nfs4_has_session(clp)) { | |
46 | nfs4_destroy_session(clp->cl_session); | |
47 | nfs4_destroy_clientid(clp); | |
48 | } | |
49 | ||
50 | } | |
51 | #else /* CONFIG_NFS_V4_1 */ | |
52 | static void nfs4_shutdown_session(struct nfs_client *clp) | |
53 | { | |
54 | } | |
55 | #endif /* CONFIG_NFS_V4_1 */ | |
56 | ||
57 | struct nfs_client *nfs4_alloc_client(const struct nfs_client_initdata *cl_init) | |
58 | { | |
59 | int err; | |
60 | struct nfs_client *clp = nfs_alloc_client(cl_init); | |
61 | if (IS_ERR(clp)) | |
62 | return clp; | |
63 | ||
64 | err = nfs_get_cb_ident_idr(clp, cl_init->minorversion); | |
65 | if (err) | |
66 | goto error; | |
67 | ||
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]; | |
74 | return clp; | |
75 | ||
76 | error: | |
77 | kfree(clp); | |
78 | return ERR_PTR(err); | |
79 | } | |
80 | ||
81 | /* | |
82 | * Destroy the NFS4 callback service | |
83 | */ | |
84 | static void nfs4_destroy_callback(struct nfs_client *clp) | |
85 | { | |
86 | if (__test_and_clear_bit(NFS_CS_CALLBACK, &clp->cl_res_state)) | |
87 | nfs_callback_down(clp->cl_mvops->minor_version); | |
88 | } | |
89 | ||
90 | static void nfs4_shutdown_client(struct nfs_client *clp) | |
91 | { | |
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); | |
98 | ||
99 | rpc_destroy_wait_queue(&clp->cl_rpcwaitq); | |
100 | kfree(clp->cl_serverowner); | |
101 | kfree(clp->cl_serverscope); | |
102 | kfree(clp->cl_implid); | |
103 | } | |
104 | ||
105 | void nfs4_free_client(struct nfs_client *clp) | |
106 | { | |
107 | nfs4_shutdown_client(clp); | |
108 | nfs_free_client(clp); | |
109 | } | |
110 | ||
428360d7 BS |
111 | /* |
112 | * Initialize the NFS4 callback service | |
113 | */ | |
114 | static int nfs4_init_callback(struct nfs_client *clp) | |
115 | { | |
116 | int error; | |
117 | ||
118 | if (clp->rpc_ops->version == 4) { | |
119 | struct rpc_xprt *xprt; | |
120 | ||
121 | xprt = rcu_dereference_raw(clp->cl_rpcclient->cl_xprt); | |
122 | ||
123 | if (nfs4_has_session(clp)) { | |
124 | error = xprt_setup_backchannel(xprt, | |
125 | NFS41_BC_MIN_CALLBACKS); | |
126 | if (error < 0) | |
127 | return error; | |
128 | } | |
129 | ||
130 | error = nfs_callback_up(clp->cl_mvops->minor_version, xprt); | |
131 | if (error < 0) { | |
132 | dprintk("%s: failed to start callback. Error = %d\n", | |
133 | __func__, error); | |
134 | return error; | |
135 | } | |
136 | __set_bit(NFS_CS_CALLBACK, &clp->cl_res_state); | |
137 | } | |
138 | return 0; | |
139 | } | |
140 | ||
141 | /* | |
142 | * Initialize the minor version specific parts of an NFS4 client record | |
143 | */ | |
144 | static int nfs4_init_client_minor_version(struct nfs_client *clp) | |
145 | { | |
146 | #if defined(CONFIG_NFS_V4_1) | |
147 | if (clp->cl_mvops->minor_version) { | |
148 | struct nfs4_session *session = NULL; | |
149 | /* | |
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. | |
153 | */ | |
154 | session = nfs4_alloc_session(clp); | |
155 | if (!session) | |
156 | return -ENOMEM; | |
157 | ||
158 | clp->cl_session = session; | |
159 | /* | |
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 | |
163 | * nfs_client struct | |
164 | */ | |
165 | nfs_mark_client_ready(clp, NFS_CS_SESSION_INITING); | |
166 | } | |
167 | #endif /* CONFIG_NFS_V4_1 */ | |
168 | ||
169 | return nfs4_init_callback(clp); | |
170 | } | |
171 | ||
172 | /** | |
173 | * nfs4_init_client - Initialise an NFS4 client record | |
174 | * | |
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 | |
179 | * | |
180 | * Returns pointer to an NFS client, or an ERR_PTR value. | |
181 | */ | |
182 | struct nfs_client *nfs4_init_client(struct nfs_client *clp, | |
183 | const struct rpc_timeout *timeparms, | |
184 | const char *ip_addr, | |
185 | rpc_authflavor_t authflavour) | |
186 | { | |
187 | char buf[INET6_ADDRSTRLEN + 1]; | |
188 | int error; | |
189 | ||
190 | if (clp->cl_cons_state == NFS_CS_READY) { | |
191 | /* the client is initialised already */ | |
192 | dprintk("<-- nfs4_init_client() = 0 [already %p]\n", clp); | |
193 | return clp; | |
194 | } | |
195 | ||
196 | /* Check NFS protocol revision and initialize RPC op vector */ | |
197 | clp->rpc_ops = &nfs_v4_clientops; | |
198 | ||
199 | __set_bit(NFS_CS_DISCRTRY, &clp->cl_flags); | |
200 | error = nfs_create_rpc_client(clp, timeparms, authflavour); | |
201 | if (error < 0) | |
202 | goto error; | |
203 | ||
204 | /* If no clientaddr= option was specified, find a usable cb address */ | |
205 | if (ip_addr == NULL) { | |
206 | struct sockaddr_storage cb_addr; | |
207 | struct sockaddr *sap = (struct sockaddr *)&cb_addr; | |
208 | ||
209 | error = rpc_localaddr(clp->cl_rpcclient, sap, sizeof(cb_addr)); | |
210 | if (error < 0) | |
211 | goto error; | |
212 | error = rpc_ntop(sap, buf, sizeof(buf)); | |
213 | if (error < 0) | |
214 | goto error; | |
215 | ip_addr = (const char *)buf; | |
216 | } | |
217 | strlcpy(clp->cl_ipaddr, ip_addr, sizeof(clp->cl_ipaddr)); | |
218 | ||
219 | error = nfs_idmap_new(clp); | |
220 | if (error < 0) { | |
221 | dprintk("%s: failed to create idmapper. Error = %d\n", | |
222 | __func__, error); | |
223 | goto error; | |
224 | } | |
225 | __set_bit(NFS_CS_IDMAP, &clp->cl_res_state); | |
226 | ||
227 | error = nfs4_init_client_minor_version(clp); | |
228 | if (error < 0) | |
229 | goto error; | |
230 | ||
231 | if (!nfs4_has_session(clp)) | |
232 | nfs_mark_client_ready(clp, NFS_CS_READY); | |
233 | return clp; | |
234 | ||
235 | error: | |
236 | nfs_mark_client_ready(clp, error); | |
237 | nfs_put_client(clp); | |
238 | dprintk("<-- nfs4_init_client() = xerror %d\n", error); | |
239 | return ERR_PTR(error); | |
240 | } | |
fcf10398 BS |
241 | |
242 | static void nfs4_destroy_server(struct nfs_server *server) | |
243 | { | |
244 | nfs_server_return_all_delegations(server); | |
245 | unset_pnfs_layoutdriver(server); | |
246 | nfs4_purge_state_owners(server); | |
247 | } | |
248 | ||
249 | /* | |
250 | * NFSv4.0 callback thread helper | |
251 | * | |
252 | * Find a client by callback identifier | |
253 | */ | |
254 | struct nfs_client * | |
255 | nfs4_find_client_ident(struct net *net, int cb_ident) | |
256 | { | |
257 | struct nfs_client *clp; | |
258 | struct nfs_net *nn = net_generic(net, nfs_net_id); | |
259 | ||
260 | spin_lock(&nn->nfs_client_lock); | |
261 | clp = idr_find(&nn->cb_ident_idr, cb_ident); | |
262 | if (clp) | |
263 | atomic_inc(&clp->cl_count); | |
264 | spin_unlock(&nn->nfs_client_lock); | |
265 | return clp; | |
266 | } | |
267 | ||
268 | #if defined(CONFIG_NFS_V4_1) | |
269 | /* Common match routine for v4.0 and v4.1 callback services */ | |
270 | static bool nfs4_cb_match_client(const struct sockaddr *addr, | |
271 | struct nfs_client *clp, u32 minorversion) | |
272 | { | |
273 | struct sockaddr *clap = (struct sockaddr *)&clp->cl_addr; | |
274 | ||
275 | /* Don't match clients that failed to initialise */ | |
276 | if (!(clp->cl_cons_state == NFS_CS_READY || | |
277 | clp->cl_cons_state == NFS_CS_SESSION_INITING)) | |
278 | return false; | |
279 | ||
280 | smp_rmb(); | |
281 | ||
282 | /* Match the version and minorversion */ | |
283 | if (clp->rpc_ops->version != 4 || | |
284 | clp->cl_minorversion != minorversion) | |
285 | return false; | |
286 | ||
287 | /* Match only the IP address, not the port number */ | |
288 | if (!nfs_sockaddr_match_ipaddr(addr, clap)) | |
289 | return false; | |
290 | ||
291 | return true; | |
292 | } | |
293 | ||
294 | /* | |
295 | * NFSv4.1 callback thread helper | |
296 | * For CB_COMPOUND calls, find a client by IP address, protocol version, | |
297 | * minorversion, and sessionID | |
298 | * | |
299 | * Returns NULL if no such client | |
300 | */ | |
301 | struct nfs_client * | |
302 | nfs4_find_client_sessionid(struct net *net, const struct sockaddr *addr, | |
303 | struct nfs4_sessionid *sid) | |
304 | { | |
305 | struct nfs_client *clp; | |
306 | struct nfs_net *nn = net_generic(net, nfs_net_id); | |
307 | ||
308 | spin_lock(&nn->nfs_client_lock); | |
309 | list_for_each_entry(clp, &nn->nfs_client_list, cl_share_link) { | |
310 | if (nfs4_cb_match_client(addr, clp, 1) == false) | |
311 | continue; | |
312 | ||
313 | if (!nfs4_has_session(clp)) | |
314 | continue; | |
315 | ||
316 | /* Match sessionid*/ | |
317 | if (memcmp(clp->cl_session->sess_id.data, | |
318 | sid->data, NFS4_MAX_SESSIONID_LEN) != 0) | |
319 | continue; | |
320 | ||
321 | atomic_inc(&clp->cl_count); | |
322 | spin_unlock(&nn->nfs_client_lock); | |
323 | return clp; | |
324 | } | |
325 | spin_unlock(&nn->nfs_client_lock); | |
326 | return NULL; | |
327 | } | |
328 | ||
329 | #else /* CONFIG_NFS_V4_1 */ | |
330 | ||
331 | struct nfs_client * | |
332 | nfs4_find_client_sessionid(struct net *net, const struct sockaddr *addr, | |
333 | struct nfs4_sessionid *sid) | |
334 | { | |
335 | return NULL; | |
336 | } | |
337 | #endif /* CONFIG_NFS_V4_1 */ | |
338 | ||
339 | /* | |
340 | * Set up an NFS4 client | |
341 | */ | |
342 | static int nfs4_set_client(struct nfs_server *server, | |
343 | const char *hostname, | |
344 | const struct sockaddr *addr, | |
345 | const size_t addrlen, | |
346 | const char *ip_addr, | |
347 | rpc_authflavor_t authflavour, | |
348 | int proto, const struct rpc_timeout *timeparms, | |
349 | u32 minorversion, struct net *net) | |
350 | { | |
351 | struct nfs_client_initdata cl_init = { | |
352 | .hostname = hostname, | |
353 | .addr = addr, | |
354 | .addrlen = addrlen, | |
ab7017a3 | 355 | .nfs_mod = &nfs_v4, |
fcf10398 BS |
356 | .proto = proto, |
357 | .minorversion = minorversion, | |
358 | .net = net, | |
359 | }; | |
360 | struct nfs_client *clp; | |
361 | int error; | |
362 | ||
363 | dprintk("--> nfs4_set_client()\n"); | |
364 | ||
365 | if (server->flags & NFS_MOUNT_NORESVPORT) | |
366 | set_bit(NFS_CS_NORESVPORT, &cl_init.init_flags); | |
367 | ||
368 | /* Allocate or find a client reference we can use */ | |
369 | clp = nfs_get_client(&cl_init, timeparms, ip_addr, authflavour); | |
370 | if (IS_ERR(clp)) { | |
371 | error = PTR_ERR(clp); | |
372 | goto error; | |
373 | } | |
374 | ||
375 | /* | |
376 | * Query for the lease time on clientid setup or renewal | |
377 | * | |
378 | * Note that this will be set on nfs_clients that were created | |
379 | * only for the DS role and did not set this bit, but now will | |
380 | * serve a dual role. | |
381 | */ | |
382 | set_bit(NFS_CS_CHECK_LEASE_TIME, &clp->cl_res_state); | |
383 | ||
384 | server->nfs_client = clp; | |
385 | dprintk("<-- nfs4_set_client() = 0 [new %p]\n", clp); | |
386 | return 0; | |
387 | error: | |
388 | dprintk("<-- nfs4_set_client() = xerror %d\n", error); | |
389 | return error; | |
390 | } | |
391 | ||
392 | /* | |
393 | * Set up a pNFS Data Server client. | |
394 | * | |
395 | * Return any existing nfs_client that matches server address,port,version | |
396 | * and minorversion. | |
397 | * | |
398 | * For a new nfs_client, use a soft mount (default), a low retrans and a | |
399 | * low timeout interval so that if a connection is lost, we retry through | |
400 | * the MDS. | |
401 | */ | |
402 | struct nfs_client *nfs4_set_ds_client(struct nfs_client* mds_clp, | |
403 | const struct sockaddr *ds_addr, int ds_addrlen, | |
404 | int ds_proto, unsigned int ds_timeo, unsigned int ds_retrans) | |
405 | { | |
406 | struct nfs_client_initdata cl_init = { | |
407 | .addr = ds_addr, | |
408 | .addrlen = ds_addrlen, | |
ab7017a3 | 409 | .nfs_mod = &nfs_v4, |
fcf10398 BS |
410 | .proto = ds_proto, |
411 | .minorversion = mds_clp->cl_minorversion, | |
412 | .net = mds_clp->cl_net, | |
413 | }; | |
414 | struct rpc_timeout ds_timeout; | |
415 | struct nfs_client *clp; | |
416 | ||
417 | /* | |
418 | * Set an authflavor equual to the MDS value. Use the MDS nfs_client | |
419 | * cl_ipaddr so as to use the same EXCHANGE_ID co_ownerid as the MDS | |
420 | * (section 13.1 RFC 5661). | |
421 | */ | |
422 | nfs_init_timeout_values(&ds_timeout, ds_proto, ds_timeo, ds_retrans); | |
423 | clp = nfs_get_client(&cl_init, &ds_timeout, mds_clp->cl_ipaddr, | |
424 | mds_clp->cl_rpcclient->cl_auth->au_flavor); | |
425 | ||
426 | dprintk("<-- %s %p\n", __func__, clp); | |
427 | return clp; | |
428 | } | |
429 | EXPORT_SYMBOL_GPL(nfs4_set_ds_client); | |
430 | ||
431 | /* | |
432 | * Session has been established, and the client marked ready. | |
433 | * Set the mount rsize and wsize with negotiated fore channel | |
434 | * attributes which will be bound checked in nfs_server_set_fsinfo. | |
435 | */ | |
436 | static void nfs4_session_set_rwsize(struct nfs_server *server) | |
437 | { | |
438 | #ifdef CONFIG_NFS_V4_1 | |
439 | struct nfs4_session *sess; | |
440 | u32 server_resp_sz; | |
441 | u32 server_rqst_sz; | |
442 | ||
443 | if (!nfs4_has_session(server->nfs_client)) | |
444 | return; | |
445 | sess = server->nfs_client->cl_session; | |
446 | server_resp_sz = sess->fc_attrs.max_resp_sz - nfs41_maxread_overhead; | |
447 | server_rqst_sz = sess->fc_attrs.max_rqst_sz - nfs41_maxwrite_overhead; | |
448 | ||
449 | if (server->rsize > server_resp_sz) | |
450 | server->rsize = server_resp_sz; | |
451 | if (server->wsize > server_rqst_sz) | |
452 | server->wsize = server_rqst_sz; | |
453 | #endif /* CONFIG_NFS_V4_1 */ | |
454 | } | |
455 | ||
456 | static int nfs4_server_common_setup(struct nfs_server *server, | |
457 | struct nfs_fh *mntfh) | |
458 | { | |
459 | struct nfs_fattr *fattr; | |
460 | int error; | |
461 | ||
462 | BUG_ON(!server->nfs_client); | |
463 | BUG_ON(!server->nfs_client->rpc_ops); | |
464 | BUG_ON(!server->nfs_client->rpc_ops->file_inode_ops); | |
465 | ||
466 | /* data servers support only a subset of NFSv4.1 */ | |
467 | if (is_ds_only_client(server->nfs_client)) | |
468 | return -EPROTONOSUPPORT; | |
469 | ||
470 | fattr = nfs_alloc_fattr(); | |
471 | if (fattr == NULL) | |
472 | return -ENOMEM; | |
473 | ||
474 | /* We must ensure the session is initialised first */ | |
475 | error = nfs4_init_session(server); | |
476 | if (error < 0) | |
477 | goto out; | |
478 | ||
479 | /* Probe the root fh to retrieve its FSID and filehandle */ | |
480 | error = nfs4_get_rootfh(server, mntfh); | |
481 | if (error < 0) | |
482 | goto out; | |
483 | ||
484 | dprintk("Server FSID: %llx:%llx\n", | |
485 | (unsigned long long) server->fsid.major, | |
486 | (unsigned long long) server->fsid.minor); | |
487 | dprintk("Mount FH: %d\n", mntfh->size); | |
488 | ||
489 | nfs4_session_set_rwsize(server); | |
490 | ||
491 | error = nfs_probe_fsinfo(server, mntfh, fattr); | |
492 | if (error < 0) | |
493 | goto out; | |
494 | ||
495 | if (server->namelen == 0 || server->namelen > NFS4_MAXNAMLEN) | |
496 | server->namelen = NFS4_MAXNAMLEN; | |
497 | ||
498 | nfs_server_insert_lists(server); | |
499 | server->mount_time = jiffies; | |
500 | server->destroy = nfs4_destroy_server; | |
501 | out: | |
502 | nfs_free_fattr(fattr); | |
503 | return error; | |
504 | } | |
505 | ||
506 | /* | |
507 | * Create a version 4 volume record | |
508 | */ | |
509 | static int nfs4_init_server(struct nfs_server *server, | |
510 | const struct nfs_parsed_mount_data *data) | |
511 | { | |
512 | struct rpc_timeout timeparms; | |
513 | int error; | |
514 | ||
515 | dprintk("--> nfs4_init_server()\n"); | |
516 | ||
517 | nfs_init_timeout_values(&timeparms, data->nfs_server.protocol, | |
518 | data->timeo, data->retrans); | |
519 | ||
520 | /* Initialise the client representation from the mount data */ | |
521 | server->flags = data->flags; | |
522 | server->caps |= NFS_CAP_ATOMIC_OPEN|NFS_CAP_CHANGE_ATTR|NFS_CAP_POSIX_LOCK; | |
523 | if (!(data->flags & NFS_MOUNT_NORDIRPLUS)) | |
524 | server->caps |= NFS_CAP_READDIRPLUS; | |
525 | server->options = data->options; | |
526 | ||
527 | /* Get a client record */ | |
528 | error = nfs4_set_client(server, | |
529 | data->nfs_server.hostname, | |
530 | (const struct sockaddr *)&data->nfs_server.address, | |
531 | data->nfs_server.addrlen, | |
532 | data->client_address, | |
533 | data->auth_flavors[0], | |
534 | data->nfs_server.protocol, | |
535 | &timeparms, | |
536 | data->minorversion, | |
537 | data->net); | |
538 | if (error < 0) | |
539 | goto error; | |
540 | ||
541 | /* | |
542 | * Don't use NFS uid/gid mapping if we're using AUTH_SYS or lower | |
543 | * authentication. | |
544 | */ | |
545 | if (nfs4_disable_idmapping && data->auth_flavors[0] == RPC_AUTH_UNIX) | |
546 | server->caps |= NFS_CAP_UIDGID_NOMAP; | |
547 | ||
548 | if (data->rsize) | |
549 | server->rsize = nfs_block_size(data->rsize, NULL); | |
550 | if (data->wsize) | |
551 | server->wsize = nfs_block_size(data->wsize, NULL); | |
552 | ||
553 | server->acregmin = data->acregmin * HZ; | |
554 | server->acregmax = data->acregmax * HZ; | |
555 | server->acdirmin = data->acdirmin * HZ; | |
556 | server->acdirmax = data->acdirmax * HZ; | |
557 | ||
558 | server->port = data->nfs_server.port; | |
559 | ||
560 | error = nfs_init_server_rpcclient(server, &timeparms, data->auth_flavors[0]); | |
561 | ||
562 | error: | |
563 | /* Done */ | |
564 | dprintk("<-- nfs4_init_server() = %d\n", error); | |
565 | return error; | |
566 | } | |
567 | ||
568 | /* | |
569 | * Create a version 4 volume record | |
570 | * - keyed on server and FSID | |
571 | */ | |
1179acc6 BS |
572 | /*struct nfs_server *nfs4_create_server(const struct nfs_parsed_mount_data *data, |
573 | struct nfs_fh *mntfh)*/ | |
574 | struct nfs_server *nfs4_create_server(struct nfs_mount_info *mount_info, | |
575 | struct nfs_subversion *nfs_mod) | |
fcf10398 BS |
576 | { |
577 | struct nfs_server *server; | |
578 | int error; | |
579 | ||
580 | dprintk("--> nfs4_create_server()\n"); | |
581 | ||
582 | server = nfs_alloc_server(); | |
583 | if (!server) | |
584 | return ERR_PTR(-ENOMEM); | |
585 | ||
586 | /* set up the general RPC client */ | |
1179acc6 | 587 | error = nfs4_init_server(server, mount_info->parsed); |
fcf10398 BS |
588 | if (error < 0) |
589 | goto error; | |
590 | ||
1179acc6 | 591 | error = nfs4_server_common_setup(server, mount_info->mntfh); |
fcf10398 BS |
592 | if (error < 0) |
593 | goto error; | |
594 | ||
595 | dprintk("<-- nfs4_create_server() = %p\n", server); | |
596 | return server; | |
597 | ||
598 | error: | |
599 | nfs_free_server(server); | |
600 | dprintk("<-- nfs4_create_server() = error %d\n", error); | |
601 | return ERR_PTR(error); | |
602 | } | |
603 | ||
604 | /* | |
605 | * Create an NFS4 referral server record | |
606 | */ | |
607 | struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data, | |
608 | struct nfs_fh *mntfh) | |
609 | { | |
610 | struct nfs_client *parent_client; | |
611 | struct nfs_server *server, *parent_server; | |
612 | int error; | |
613 | ||
614 | dprintk("--> nfs4_create_referral_server()\n"); | |
615 | ||
616 | server = nfs_alloc_server(); | |
617 | if (!server) | |
618 | return ERR_PTR(-ENOMEM); | |
619 | ||
620 | parent_server = NFS_SB(data->sb); | |
621 | parent_client = parent_server->nfs_client; | |
622 | ||
623 | /* Initialise the client representation from the parent server */ | |
624 | nfs_server_copy_userdata(server, parent_server); | |
625 | server->caps |= NFS_CAP_ATOMIC_OPEN|NFS_CAP_CHANGE_ATTR; | |
626 | ||
627 | /* Get a client representation. | |
628 | * Note: NFSv4 always uses TCP, */ | |
629 | error = nfs4_set_client(server, data->hostname, | |
630 | data->addr, | |
631 | data->addrlen, | |
632 | parent_client->cl_ipaddr, | |
633 | data->authflavor, | |
634 | rpc_protocol(parent_server->client), | |
635 | parent_server->client->cl_timeout, | |
636 | parent_client->cl_mvops->minor_version, | |
637 | parent_client->cl_net); | |
638 | if (error < 0) | |
639 | goto error; | |
640 | ||
641 | error = nfs_init_server_rpcclient(server, parent_server->client->cl_timeout, data->authflavor); | |
642 | if (error < 0) | |
643 | goto error; | |
644 | ||
645 | error = nfs4_server_common_setup(server, mntfh); | |
646 | if (error < 0) | |
647 | goto error; | |
648 | ||
649 | dprintk("<-- nfs_create_referral_server() = %p\n", server); | |
650 | return server; | |
651 | ||
652 | error: | |
653 | nfs_free_server(server); | |
654 | dprintk("<-- nfs4_create_referral_server() = error %d\n", error); | |
655 | return ERR_PTR(error); | |
656 | } |