Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4proc.c | |
3 | * | |
4 | * Client-side procedure declarations for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/mm.h> | |
1da177e4 LT |
39 | #include <linux/delay.h> |
40 | #include <linux/errno.h> | |
41 | #include <linux/string.h> | |
5a0e3ad6 | 42 | #include <linux/slab.h> |
1da177e4 LT |
43 | #include <linux/sunrpc/clnt.h> |
44 | #include <linux/nfs.h> | |
45 | #include <linux/nfs4.h> | |
46 | #include <linux/nfs_fs.h> | |
47 | #include <linux/nfs_page.h> | |
1da177e4 | 48 | #include <linux/namei.h> |
02a913a7 | 49 | #include <linux/mount.h> |
99fe60d0 | 50 | #include <linux/module.h> |
5a0ffe54 | 51 | #include <linux/sunrpc/bc_xprt.h> |
1da177e4 | 52 | |
4ce79717 | 53 | #include "nfs4_fs.h" |
1da177e4 | 54 | #include "delegation.h" |
101070ca | 55 | #include "internal.h" |
006ea73e | 56 | #include "iostat.h" |
fc931582 | 57 | #include "callback.h" |
b1f69b75 | 58 | #include "pnfs.h" |
1da177e4 LT |
59 | |
60 | #define NFSDBG_FACILITY NFSDBG_PROC | |
61 | ||
2066fe89 | 62 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
63 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
64 | ||
a78cb57a TM |
65 | #define NFS4_MAX_LOOP_ON_RECOVER (10) |
66 | ||
cdd4e68b | 67 | struct nfs4_opendata; |
864472e9 | 68 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
b257957e | 69 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 70 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
9e33bed5 | 71 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); |
9936781d TM |
72 | static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr); |
73 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); | |
0ab64e0e TM |
74 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
75 | struct nfs_fattr *fattr, struct iattr *sattr, | |
76 | struct nfs4_state *state); | |
1da177e4 | 77 | |
1da177e4 | 78 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 79 | static int nfs4_map_errors(int err) |
1da177e4 | 80 | { |
52567b03 TM |
81 | if (err >= -1000) |
82 | return err; | |
83 | switch (err) { | |
84 | case -NFS4ERR_RESOURCE: | |
85 | return -EREMOTEIO; | |
86 | default: | |
1da177e4 | 87 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 88 | __func__, -err); |
52567b03 | 89 | break; |
1da177e4 | 90 | } |
52567b03 | 91 | return -EIO; |
1da177e4 LT |
92 | } |
93 | ||
94 | /* | |
95 | * This is our standard bitmap for GETATTR requests. | |
96 | */ | |
97 | const u32 nfs4_fattr_bitmap[2] = { | |
98 | FATTR4_WORD0_TYPE | |
99 | | FATTR4_WORD0_CHANGE | |
100 | | FATTR4_WORD0_SIZE | |
101 | | FATTR4_WORD0_FSID | |
102 | | FATTR4_WORD0_FILEID, | |
103 | FATTR4_WORD1_MODE | |
104 | | FATTR4_WORD1_NUMLINKS | |
105 | | FATTR4_WORD1_OWNER | |
106 | | FATTR4_WORD1_OWNER_GROUP | |
107 | | FATTR4_WORD1_RAWDEV | |
108 | | FATTR4_WORD1_SPACE_USED | |
109 | | FATTR4_WORD1_TIME_ACCESS | |
110 | | FATTR4_WORD1_TIME_METADATA | |
111 | | FATTR4_WORD1_TIME_MODIFY | |
112 | }; | |
113 | ||
114 | const u32 nfs4_statfs_bitmap[2] = { | |
115 | FATTR4_WORD0_FILES_AVAIL | |
116 | | FATTR4_WORD0_FILES_FREE | |
117 | | FATTR4_WORD0_FILES_TOTAL, | |
118 | FATTR4_WORD1_SPACE_AVAIL | |
119 | | FATTR4_WORD1_SPACE_FREE | |
120 | | FATTR4_WORD1_SPACE_TOTAL | |
121 | }; | |
122 | ||
4ce79717 | 123 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
124 | FATTR4_WORD0_MAXLINK |
125 | | FATTR4_WORD0_MAXNAME, | |
126 | 0 | |
127 | }; | |
128 | ||
129 | const u32 nfs4_fsinfo_bitmap[2] = { FATTR4_WORD0_MAXFILESIZE | |
130 | | FATTR4_WORD0_MAXREAD | |
131 | | FATTR4_WORD0_MAXWRITE | |
132 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 133 | FATTR4_WORD1_TIME_DELTA |
504913fb | 134 | | FATTR4_WORD1_FS_LAYOUT_TYPES |
1da177e4 LT |
135 | }; |
136 | ||
830b8e33 MN |
137 | const u32 nfs4_fs_locations_bitmap[2] = { |
138 | FATTR4_WORD0_TYPE | |
139 | | FATTR4_WORD0_CHANGE | |
140 | | FATTR4_WORD0_SIZE | |
141 | | FATTR4_WORD0_FSID | |
142 | | FATTR4_WORD0_FILEID | |
143 | | FATTR4_WORD0_FS_LOCATIONS, | |
144 | FATTR4_WORD1_MODE | |
145 | | FATTR4_WORD1_NUMLINKS | |
146 | | FATTR4_WORD1_OWNER | |
147 | | FATTR4_WORD1_OWNER_GROUP | |
148 | | FATTR4_WORD1_RAWDEV | |
149 | | FATTR4_WORD1_SPACE_USED | |
150 | | FATTR4_WORD1_TIME_ACCESS | |
151 | | FATTR4_WORD1_TIME_METADATA | |
152 | | FATTR4_WORD1_TIME_MODIFY | |
153 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
154 | }; | |
155 | ||
bc4785cd | 156 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
157 | struct nfs4_readdir_arg *readdir) |
158 | { | |
0dbb4c67 | 159 | __be32 *start, *p; |
1da177e4 LT |
160 | |
161 | BUG_ON(readdir->count < 80); | |
162 | if (cookie > 2) { | |
b7ef1956 | 163 | readdir->cookie = cookie; |
1da177e4 LT |
164 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
165 | return; | |
166 | } | |
167 | ||
168 | readdir->cookie = 0; | |
169 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
170 | if (cookie == 2) | |
171 | return; | |
172 | ||
173 | /* | |
174 | * NFSv4 servers do not return entries for '.' and '..' | |
175 | * Therefore, we fake these entries here. We let '.' | |
176 | * have cookie 0 and '..' have cookie 1. Note that | |
177 | * when talking to the server, we always send cookie 0 | |
178 | * instead of 1 or 2. | |
179 | */ | |
0dbb4c67 | 180 | start = p = kmap_atomic(*readdir->pages, KM_USER0); |
1da177e4 LT |
181 | |
182 | if (cookie == 0) { | |
183 | *p++ = xdr_one; /* next */ | |
184 | *p++ = xdr_zero; /* cookie, first word */ | |
185 | *p++ = xdr_one; /* cookie, second word */ | |
186 | *p++ = xdr_one; /* entry len */ | |
187 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
188 | p++; | |
189 | *p++ = xdr_one; /* bitmap length */ | |
190 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
191 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 192 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
193 | } |
194 | ||
195 | *p++ = xdr_one; /* next */ | |
196 | *p++ = xdr_zero; /* cookie, first word */ | |
197 | *p++ = xdr_two; /* cookie, second word */ | |
198 | *p++ = xdr_two; /* entry len */ | |
199 | memcpy(p, "..\0\0", 4); /* entry */ | |
200 | p++; | |
201 | *p++ = xdr_one; /* bitmap length */ | |
202 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
203 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 204 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
205 | |
206 | readdir->pgbase = (char *)p - (char *)start; | |
207 | readdir->count -= readdir->pgbase; | |
208 | kunmap_atomic(start, KM_USER0); | |
209 | } | |
210 | ||
65de872e TM |
211 | static int nfs4_wait_clnt_recover(struct nfs_client *clp) |
212 | { | |
213 | int res; | |
214 | ||
215 | might_sleep(); | |
216 | ||
e005e804 | 217 | res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING, |
72cb77f4 | 218 | nfs_wait_bit_killable, TASK_KILLABLE); |
65de872e TM |
219 | return res; |
220 | } | |
221 | ||
222 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) | |
223 | { | |
224 | int res = 0; | |
225 | ||
226 | might_sleep(); | |
227 | ||
228 | if (*timeout <= 0) | |
229 | *timeout = NFS4_POLL_RETRY_MIN; | |
230 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
231 | *timeout = NFS4_POLL_RETRY_MAX; | |
232 | schedule_timeout_killable(*timeout); | |
233 | if (fatal_signal_pending(current)) | |
234 | res = -ERESTARTSYS; | |
235 | *timeout <<= 1; | |
236 | return res; | |
237 | } | |
238 | ||
239 | /* This is the error handling routine for processes that are allowed | |
240 | * to sleep. | |
241 | */ | |
242 | static int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception) | |
243 | { | |
244 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 245 | struct nfs4_state *state = exception->state; |
65de872e TM |
246 | int ret = errorcode; |
247 | ||
248 | exception->retry = 0; | |
249 | switch(errorcode) { | |
250 | case 0: | |
251 | return 0; | |
9e33bed5 TM |
252 | case -NFS4ERR_ADMIN_REVOKED: |
253 | case -NFS4ERR_BAD_STATEID: | |
254 | case -NFS4ERR_OPENMODE: | |
255 | if (state == NULL) | |
256 | break; | |
257 | nfs4_state_mark_reclaim_nograce(clp, state); | |
a2c0b9e2 | 258 | goto do_state_recovery; |
65de872e | 259 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 260 | case -NFS4ERR_STALE_CLIENTID: |
65de872e | 261 | case -NFS4ERR_EXPIRED: |
a2c0b9e2 | 262 | goto do_state_recovery; |
03391693 | 263 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
264 | case -NFS4ERR_BADSESSION: |
265 | case -NFS4ERR_BADSLOT: | |
266 | case -NFS4ERR_BAD_HIGH_SLOT: | |
267 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
268 | case -NFS4ERR_DEADSESSION: | |
269 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
270 | case -NFS4ERR_SEQ_MISORDERED: | |
271 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
272 | errorcode); | |
0b9e2d41 | 273 | nfs4_schedule_state_recovery(clp); |
4745e315 | 274 | exception->retry = 1; |
b9179237 | 275 | break; |
03391693 | 276 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 277 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
278 | if (exception->timeout > HZ) { |
279 | /* We have retried a decent amount, time to | |
280 | * fail | |
281 | */ | |
282 | ret = -EBUSY; | |
283 | break; | |
284 | } | |
65de872e TM |
285 | case -NFS4ERR_GRACE: |
286 | case -NFS4ERR_DELAY: | |
2c643488 | 287 | case -EKEYEXPIRED: |
65de872e TM |
288 | ret = nfs4_delay(server->client, &exception->timeout); |
289 | if (ret != 0) | |
290 | break; | |
291 | case -NFS4ERR_OLD_STATEID: | |
292 | exception->retry = 1; | |
293 | } | |
294 | /* We failed to handle the error */ | |
295 | return nfs4_map_errors(ret); | |
a2c0b9e2 TM |
296 | do_state_recovery: |
297 | nfs4_schedule_state_recovery(clp); | |
298 | ret = nfs4_wait_clnt_recover(clp); | |
299 | if (ret == 0) | |
300 | exception->retry = 1; | |
301 | return ret; | |
65de872e TM |
302 | } |
303 | ||
304 | ||
452e9352 | 305 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 306 | { |
1da177e4 LT |
307 | spin_lock(&clp->cl_lock); |
308 | if (time_before(clp->cl_last_renewal,timestamp)) | |
309 | clp->cl_last_renewal = timestamp; | |
310 | spin_unlock(&clp->cl_lock); | |
311 | } | |
312 | ||
452e9352 TM |
313 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
314 | { | |
315 | do_renew_lease(server->nfs_client, timestamp); | |
316 | } | |
317 | ||
cccef3b9 AA |
318 | #if defined(CONFIG_NFS_V4_1) |
319 | ||
e2c4ab3c AA |
320 | /* |
321 | * nfs4_free_slot - free a slot and efficiently update slot table. | |
322 | * | |
323 | * freeing a slot is trivially done by clearing its respective bit | |
324 | * in the bitmap. | |
325 | * If the freed slotid equals highest_used_slotid we want to update it | |
326 | * so that the server would be able to size down the slot table if needed, | |
327 | * otherwise we know that the highest_used_slotid is still in use. | |
328 | * When updating highest_used_slotid there may be "holes" in the bitmap | |
329 | * so we need to scan down from highest_used_slotid to 0 looking for the now | |
330 | * highest slotid in use. | |
331 | * If none found, highest_used_slotid is set to -1. | |
35dc1d74 TM |
332 | * |
333 | * Must be called while holding tbl->slot_tbl_lock | |
e2c4ab3c AA |
334 | */ |
335 | static void | |
dfb4f309 | 336 | nfs4_free_slot(struct nfs4_slot_table *tbl, struct nfs4_slot *free_slot) |
e2c4ab3c | 337 | { |
dfb4f309 | 338 | int free_slotid = free_slot - tbl->slots; |
e2c4ab3c AA |
339 | int slotid = free_slotid; |
340 | ||
dfb4f309 | 341 | BUG_ON(slotid < 0 || slotid >= NFS4_MAX_SLOT_TABLE); |
e2c4ab3c AA |
342 | /* clear used bit in bitmap */ |
343 | __clear_bit(slotid, tbl->used_slots); | |
344 | ||
345 | /* update highest_used_slotid when it is freed */ | |
346 | if (slotid == tbl->highest_used_slotid) { | |
347 | slotid = find_last_bit(tbl->used_slots, tbl->max_slots); | |
bcb56164 | 348 | if (slotid < tbl->max_slots) |
e2c4ab3c AA |
349 | tbl->highest_used_slotid = slotid; |
350 | else | |
351 | tbl->highest_used_slotid = -1; | |
352 | } | |
e2c4ab3c AA |
353 | dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__, |
354 | free_slotid, tbl->highest_used_slotid); | |
355 | } | |
356 | ||
3bfb0fc5 AB |
357 | /* |
358 | * Signal state manager thread if session is drained | |
359 | */ | |
360 | static void nfs41_check_drain_session_complete(struct nfs4_session *ses) | |
361 | { | |
689cf5c1 AB |
362 | struct rpc_task *task; |
363 | ||
a2118c33 | 364 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state)) { |
689cf5c1 AB |
365 | task = rpc_wake_up_next(&ses->fc_slot_table.slot_tbl_waitq); |
366 | if (task) | |
367 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
3bfb0fc5 AB |
368 | return; |
369 | } | |
370 | ||
371 | if (ses->fc_slot_table.highest_used_slotid != -1) | |
372 | return; | |
373 | ||
374 | dprintk("%s COMPLETE: Session Drained\n", __func__); | |
375 | complete(&ses->complete); | |
376 | } | |
377 | ||
d185a334 | 378 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 AA |
379 | { |
380 | struct nfs4_slot_table *tbl; | |
381 | ||
d185a334 | 382 | tbl = &res->sr_session->fc_slot_table; |
dfb4f309 | 383 | if (!res->sr_slot) { |
13615871 AA |
384 | /* just wake up the next guy waiting since |
385 | * we may have not consumed a slot after all */ | |
691daf3b | 386 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 387 | return; |
13615871 | 388 | } |
ea028ac9 | 389 | |
35dc1d74 | 390 | spin_lock(&tbl->slot_tbl_lock); |
dfb4f309 | 391 | nfs4_free_slot(tbl, res->sr_slot); |
d185a334 | 392 | nfs41_check_drain_session_complete(res->sr_session); |
35dc1d74 | 393 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 394 | res->sr_slot = NULL; |
13615871 AA |
395 | } |
396 | ||
14516c3a | 397 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c AA |
398 | { |
399 | unsigned long timestamp; | |
14516c3a | 400 | struct nfs_client *clp; |
b0df806c AA |
401 | |
402 | /* | |
403 | * sr_status remains 1 if an RPC level error occurred. The server | |
404 | * may or may not have processed the sequence operation.. | |
405 | * Proceed as if the server received and processed the sequence | |
406 | * operation. | |
407 | */ | |
408 | if (res->sr_status == 1) | |
409 | res->sr_status = NFS_OK; | |
410 | ||
411 | /* -ERESTARTSYS can result in skipping nfs41_sequence_setup */ | |
dfb4f309 | 412 | if (!res->sr_slot) |
b0df806c AA |
413 | goto out; |
414 | ||
691daf3b | 415 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
416 | switch (res->sr_status) { |
417 | case 0: | |
b0df806c | 418 | /* Update the slot's sequence and clientid lease timer */ |
dfb4f309 | 419 | ++res->sr_slot->seq_nr; |
b0df806c | 420 | timestamp = res->sr_renewal_time; |
14516c3a | 421 | clp = res->sr_session->clp; |
452e9352 | 422 | do_renew_lease(clp, timestamp); |
0629e370 | 423 | /* Check sequence flags */ |
7135840f AB |
424 | if (atomic_read(&clp->cl_count) > 1) |
425 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
14516c3a TM |
426 | break; |
427 | case -NFS4ERR_DELAY: | |
428 | /* The server detected a resend of the RPC call and | |
429 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
430 | * of RFC5661. | |
431 | */ | |
12364a4f | 432 | dprintk("%s: slot=%td seq=%d: Operation in progress\n", |
dfb4f309 BH |
433 | __func__, |
434 | res->sr_slot - res->sr_session->fc_slot_table.slots, | |
435 | res->sr_slot->seq_nr); | |
14516c3a TM |
436 | goto out_retry; |
437 | default: | |
438 | /* Just update the slot sequence no. */ | |
dfb4f309 | 439 | ++res->sr_slot->seq_nr; |
b0df806c AA |
440 | } |
441 | out: | |
442 | /* The session may be reset by one of the error handlers. */ | |
443 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 444 | nfs41_sequence_free_slot(res); |
14516c3a TM |
445 | return 1; |
446 | out_retry: | |
d05dd4e9 | 447 | if (!rpc_restart_call(task)) |
14516c3a TM |
448 | goto out; |
449 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
450 | return 0; | |
b0df806c AA |
451 | } |
452 | ||
14516c3a TM |
453 | static int nfs4_sequence_done(struct rpc_task *task, |
454 | struct nfs4_sequence_res *res) | |
df896455 | 455 | { |
14516c3a TM |
456 | if (res->sr_session == NULL) |
457 | return 1; | |
458 | return nfs41_sequence_done(task, res); | |
df896455 TM |
459 | } |
460 | ||
510b8175 BH |
461 | /* |
462 | * nfs4_find_slot - efficiently look for a free slot | |
463 | * | |
464 | * nfs4_find_slot looks for an unset bit in the used_slots bitmap. | |
465 | * If found, we mark the slot as used, update the highest_used_slotid, | |
466 | * and respectively set up the sequence operation args. | |
467 | * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise. | |
fbcd4abc AA |
468 | * |
469 | * Note: must be called with under the slot_tbl_lock. | |
510b8175 BH |
470 | */ |
471 | static u8 | |
40ead580 | 472 | nfs4_find_slot(struct nfs4_slot_table *tbl) |
510b8175 BH |
473 | { |
474 | int slotid; | |
475 | u8 ret_id = NFS4_MAX_SLOT_TABLE; | |
476 | BUILD_BUG_ON((u8)NFS4_MAX_SLOT_TABLE != (int)NFS4_MAX_SLOT_TABLE); | |
477 | ||
510b8175 BH |
478 | dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n", |
479 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, | |
480 | tbl->max_slots); | |
481 | slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots); | |
482 | if (slotid >= tbl->max_slots) | |
483 | goto out; | |
484 | __set_bit(slotid, tbl->used_slots); | |
485 | if (slotid > tbl->highest_used_slotid) | |
486 | tbl->highest_used_slotid = slotid; | |
487 | ret_id = slotid; | |
488 | out: | |
489 | dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n", | |
490 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, ret_id); | |
510b8175 BH |
491 | return ret_id; |
492 | } | |
493 | ||
ce5039c1 AA |
494 | static int nfs41_setup_sequence(struct nfs4_session *session, |
495 | struct nfs4_sequence_args *args, | |
496 | struct nfs4_sequence_res *res, | |
497 | int cache_reply, | |
498 | struct rpc_task *task) | |
499 | { | |
fbcd4abc AA |
500 | struct nfs4_slot *slot; |
501 | struct nfs4_slot_table *tbl; | |
502 | u8 slotid; | |
503 | ||
504 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 505 | /* slot already allocated? */ |
dfb4f309 | 506 | if (res->sr_slot != NULL) |
ce5039c1 AA |
507 | return 0; |
508 | ||
fbcd4abc AA |
509 | tbl = &session->fc_slot_table; |
510 | ||
511 | spin_lock(&tbl->slot_tbl_lock); | |
a2118c33 | 512 | if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) && |
5601a00d | 513 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { |
ea028ac9 AA |
514 | /* |
515 | * The state manager will wait until the slot table is empty. | |
516 | * Schedule the reset thread | |
517 | */ | |
05f0d236 | 518 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
b069d94a | 519 | spin_unlock(&tbl->slot_tbl_lock); |
bcb56164 | 520 | dprintk("%s Schedule Session Reset\n", __func__); |
05f0d236 | 521 | return -EAGAIN; |
b069d94a AA |
522 | } |
523 | ||
689cf5c1 AB |
524 | if (!rpc_queue_empty(&tbl->slot_tbl_waitq) && |
525 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { | |
526 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
527 | spin_unlock(&tbl->slot_tbl_lock); | |
528 | dprintk("%s enforce FIFO order\n", __func__); | |
529 | return -EAGAIN; | |
530 | } | |
531 | ||
40ead580 | 532 | slotid = nfs4_find_slot(tbl); |
fbcd4abc AA |
533 | if (slotid == NFS4_MAX_SLOT_TABLE) { |
534 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
535 | spin_unlock(&tbl->slot_tbl_lock); | |
536 | dprintk("<-- %s: no free slots\n", __func__); | |
537 | return -EAGAIN; | |
538 | } | |
539 | spin_unlock(&tbl->slot_tbl_lock); | |
540 | ||
689cf5c1 | 541 | rpc_task_set_priority(task, RPC_PRIORITY_NORMAL); |
fbcd4abc | 542 | slot = tbl->slots + slotid; |
99fe60d0 | 543 | args->sa_session = session; |
fbcd4abc AA |
544 | args->sa_slotid = slotid; |
545 | args->sa_cache_this = cache_reply; | |
546 | ||
547 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr); | |
548 | ||
99fe60d0 | 549 | res->sr_session = session; |
dfb4f309 | 550 | res->sr_slot = slot; |
fbcd4abc | 551 | res->sr_renewal_time = jiffies; |
2a6e26cd | 552 | res->sr_status_flags = 0; |
fbcd4abc AA |
553 | /* |
554 | * sr_status is only set in decode_sequence, and so will remain | |
555 | * set to 1 if an rpc level failure occurs. | |
556 | */ | |
557 | res->sr_status = 1; | |
ce5039c1 AA |
558 | return 0; |
559 | } | |
560 | ||
035168ab | 561 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
562 | struct nfs4_sequence_args *args, |
563 | struct nfs4_sequence_res *res, | |
564 | int cache_reply, | |
565 | struct rpc_task *task) | |
566 | { | |
035168ab | 567 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
568 | int ret = 0; |
569 | ||
035168ab TM |
570 | if (session == NULL) { |
571 | args->sa_session = NULL; | |
572 | res->sr_session = NULL; | |
573 | goto out; | |
574 | } | |
575 | ||
12364a4f | 576 | dprintk("--> %s clp %p session %p sr_slot %td\n", |
dfb4f309 BH |
577 | __func__, session->clp, session, res->sr_slot ? |
578 | res->sr_slot - session->fc_slot_table.slots : -1); | |
ce5039c1 | 579 | |
035168ab | 580 | ret = nfs41_setup_sequence(session, args, res, cache_reply, |
ce5039c1 | 581 | task); |
ce5039c1 AA |
582 | out: |
583 | dprintk("<-- %s status=%d\n", __func__, ret); | |
584 | return ret; | |
585 | } | |
586 | ||
587 | struct nfs41_call_sync_data { | |
035168ab | 588 | const struct nfs_server *seq_server; |
ce5039c1 AA |
589 | struct nfs4_sequence_args *seq_args; |
590 | struct nfs4_sequence_res *seq_res; | |
591 | int cache_reply; | |
592 | }; | |
593 | ||
594 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
595 | { | |
596 | struct nfs41_call_sync_data *data = calldata; | |
597 | ||
035168ab TM |
598 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
599 | ||
600 | if (nfs4_setup_sequence(data->seq_server, data->seq_args, | |
ce5039c1 AA |
601 | data->seq_res, data->cache_reply, task)) |
602 | return; | |
603 | rpc_call_start(task); | |
604 | } | |
605 | ||
b257957e AB |
606 | static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata) |
607 | { | |
608 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
609 | nfs41_call_sync_prepare(task, calldata); | |
610 | } | |
611 | ||
69ab40c4 AA |
612 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
613 | { | |
614 | struct nfs41_call_sync_data *data = calldata; | |
615 | ||
14516c3a | 616 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
617 | } |
618 | ||
ce5039c1 AA |
619 | struct rpc_call_ops nfs41_call_sync_ops = { |
620 | .rpc_call_prepare = nfs41_call_sync_prepare, | |
69ab40c4 | 621 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
622 | }; |
623 | ||
b257957e AB |
624 | struct rpc_call_ops nfs41_call_priv_sync_ops = { |
625 | .rpc_call_prepare = nfs41_call_priv_sync_prepare, | |
626 | .rpc_call_done = nfs41_call_sync_done, | |
627 | }; | |
628 | ||
035168ab | 629 | static int nfs4_call_sync_sequence(struct nfs_server *server, |
ce5039c1 AA |
630 | struct rpc_message *msg, |
631 | struct nfs4_sequence_args *args, | |
632 | struct nfs4_sequence_res *res, | |
b257957e AB |
633 | int cache_reply, |
634 | int privileged) | |
ce5039c1 AA |
635 | { |
636 | int ret; | |
637 | struct rpc_task *task; | |
638 | struct nfs41_call_sync_data data = { | |
035168ab | 639 | .seq_server = server, |
ce5039c1 AA |
640 | .seq_args = args, |
641 | .seq_res = res, | |
642 | .cache_reply = cache_reply, | |
643 | }; | |
644 | struct rpc_task_setup task_setup = { | |
035168ab | 645 | .rpc_client = server->client, |
ce5039c1 AA |
646 | .rpc_message = msg, |
647 | .callback_ops = &nfs41_call_sync_ops, | |
648 | .callback_data = &data | |
649 | }; | |
650 | ||
dfb4f309 | 651 | res->sr_slot = NULL; |
b257957e AB |
652 | if (privileged) |
653 | task_setup.callback_ops = &nfs41_call_priv_sync_ops; | |
ce5039c1 AA |
654 | task = rpc_run_task(&task_setup); |
655 | if (IS_ERR(task)) | |
656 | ret = PTR_ERR(task); | |
657 | else { | |
658 | ret = task->tk_status; | |
659 | rpc_put_task(task); | |
660 | } | |
661 | return ret; | |
662 | } | |
663 | ||
cccef3b9 AA |
664 | int _nfs4_call_sync_session(struct nfs_server *server, |
665 | struct rpc_message *msg, | |
666 | struct nfs4_sequence_args *args, | |
667 | struct nfs4_sequence_res *res, | |
668 | int cache_reply) | |
669 | { | |
035168ab | 670 | return nfs4_call_sync_sequence(server, msg, args, res, cache_reply, 0); |
cccef3b9 AA |
671 | } |
672 | ||
df896455 | 673 | #else |
14516c3a TM |
674 | static int nfs4_sequence_done(struct rpc_task *task, |
675 | struct nfs4_sequence_res *res) | |
df896455 | 676 | { |
14516c3a | 677 | return 1; |
df896455 | 678 | } |
cccef3b9 AA |
679 | #endif /* CONFIG_NFS_V4_1 */ |
680 | ||
681 | int _nfs4_call_sync(struct nfs_server *server, | |
682 | struct rpc_message *msg, | |
683 | struct nfs4_sequence_args *args, | |
684 | struct nfs4_sequence_res *res, | |
685 | int cache_reply) | |
686 | { | |
f3752975 | 687 | args->sa_session = res->sr_session = NULL; |
cccef3b9 AA |
688 | return rpc_call_sync(server->client, msg, 0); |
689 | } | |
690 | ||
691 | #define nfs4_call_sync(server, msg, args, res, cache_reply) \ | |
97dc1359 | 692 | (server)->nfs_client->cl_mvops->call_sync((server), (msg), &(args)->seq_args, \ |
cccef3b9 AA |
693 | &(res)->seq_res, (cache_reply)) |
694 | ||
38478b24 | 695 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 696 | { |
38478b24 | 697 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 698 | |
38478b24 | 699 | spin_lock(&dir->i_lock); |
40d24704 TM |
700 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; |
701 | if (!cinfo->atomic || cinfo->before != nfsi->change_attr) | |
bfc69a45 | 702 | nfs_force_lookup_revalidate(dir); |
40d24704 | 703 | nfsi->change_attr = cinfo->after; |
38478b24 | 704 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
705 | } |
706 | ||
e56e0b78 | 707 | struct nfs4_opendata { |
c6d00e63 | 708 | struct kref kref; |
e56e0b78 TM |
709 | struct nfs_openargs o_arg; |
710 | struct nfs_openres o_res; | |
cdd4e68b TM |
711 | struct nfs_open_confirmargs c_arg; |
712 | struct nfs_open_confirmres c_res; | |
e56e0b78 TM |
713 | struct nfs_fattr f_attr; |
714 | struct nfs_fattr dir_attr; | |
ad389da7 | 715 | struct path path; |
e56e0b78 TM |
716 | struct dentry *dir; |
717 | struct nfs4_state_owner *owner; | |
aac00a8d | 718 | struct nfs4_state *state; |
e56e0b78 | 719 | struct iattr attrs; |
26e976a8 | 720 | unsigned long timestamp; |
3e309914 | 721 | unsigned int rpc_done : 1; |
24ac23ab TM |
722 | int rpc_status; |
723 | int cancelled; | |
e56e0b78 TM |
724 | }; |
725 | ||
2ced46c2 TM |
726 | |
727 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
728 | { | |
729 | p->o_res.f_attr = &p->f_attr; | |
730 | p->o_res.dir_attr = &p->dir_attr; | |
c1d51931 TM |
731 | p->o_res.seqid = p->o_arg.seqid; |
732 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 TM |
733 | p->o_res.server = p->o_arg.server; |
734 | nfs_fattr_init(&p->f_attr); | |
735 | nfs_fattr_init(&p->dir_attr); | |
736 | } | |
737 | ||
ad389da7 | 738 | static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path, |
dc0b027d | 739 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be TM |
740 | const struct iattr *attrs, |
741 | gfp_t gfp_mask) | |
e56e0b78 | 742 | { |
ad389da7 | 743 | struct dentry *parent = dget_parent(path->dentry); |
e56e0b78 TM |
744 | struct inode *dir = parent->d_inode; |
745 | struct nfs_server *server = NFS_SERVER(dir); | |
746 | struct nfs4_opendata *p; | |
747 | ||
8535b2be | 748 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
749 | if (p == NULL) |
750 | goto err; | |
8535b2be | 751 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
752 | if (p->o_arg.seqid == NULL) |
753 | goto err_free; | |
f6948697 AV |
754 | path_get(path); |
755 | p->path = *path; | |
e56e0b78 TM |
756 | p->dir = parent; |
757 | p->owner = sp; | |
758 | atomic_inc(&sp->so_count); | |
759 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
760 | p->o_arg.open_flags = flags; |
761 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
7539bbab | 762 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 763 | p->o_arg.id = sp->so_owner_id.id; |
ad389da7 | 764 | p->o_arg.name = &p->path.dentry->d_name; |
e56e0b78 TM |
765 | p->o_arg.server = server; |
766 | p->o_arg.bitmask = server->attr_bitmask; | |
767 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; | |
d77d76ff TM |
768 | if (flags & O_CREAT) { |
769 | u32 *s; | |
770 | ||
e56e0b78 TM |
771 | p->o_arg.u.attrs = &p->attrs; |
772 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
d77d76ff TM |
773 | s = (u32 *) p->o_arg.u.verifier.data; |
774 | s[0] = jiffies; | |
775 | s[1] = current->pid; | |
e56e0b78 | 776 | } |
cdd4e68b TM |
777 | p->c_arg.fh = &p->o_res.fh; |
778 | p->c_arg.stateid = &p->o_res.stateid; | |
779 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 780 | nfs4_init_opendata_res(p); |
c6d00e63 | 781 | kref_init(&p->kref); |
e56e0b78 TM |
782 | return p; |
783 | err_free: | |
784 | kfree(p); | |
785 | err: | |
786 | dput(parent); | |
787 | return NULL; | |
788 | } | |
789 | ||
c6d00e63 | 790 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 791 | { |
c6d00e63 TM |
792 | struct nfs4_opendata *p = container_of(kref, |
793 | struct nfs4_opendata, kref); | |
794 | ||
795 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
796 | if (p->state != NULL) |
797 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
798 | nfs4_put_state_owner(p->owner); |
799 | dput(p->dir); | |
31f31db1 | 800 | path_put(&p->path); |
c6d00e63 TM |
801 | kfree(p); |
802 | } | |
803 | ||
804 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
805 | { | |
806 | if (p != NULL) | |
807 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
808 | } |
809 | ||
06f814a3 TM |
810 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
811 | { | |
06f814a3 TM |
812 | int ret; |
813 | ||
06f814a3 | 814 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
815 | return ret; |
816 | } | |
817 | ||
dc0b027d | 818 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
819 | { |
820 | int ret = 0; | |
dc0b027d TM |
821 | |
822 | if (open_mode & O_EXCL) | |
823 | goto out; | |
824 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 825 | case FMODE_READ: |
88069f77 TM |
826 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
827 | && state->n_rdonly != 0; | |
6ee41268 TM |
828 | break; |
829 | case FMODE_WRITE: | |
88069f77 TM |
830 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
831 | && state->n_wronly != 0; | |
6ee41268 TM |
832 | break; |
833 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
834 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
835 | && state->n_rdwr != 0; | |
6ee41268 | 836 | } |
dc0b027d | 837 | out: |
6ee41268 TM |
838 | return ret; |
839 | } | |
840 | ||
dc0b027d | 841 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 842 | { |
dc0b027d | 843 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 844 | return 0; |
15c831bf | 845 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 846 | return 0; |
b7391f44 | 847 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
848 | return 1; |
849 | } | |
850 | ||
dc0b027d | 851 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 852 | { |
dc0b027d | 853 | switch (fmode) { |
e7616923 TM |
854 | case FMODE_WRITE: |
855 | state->n_wronly++; | |
856 | break; | |
857 | case FMODE_READ: | |
858 | state->n_rdonly++; | |
859 | break; | |
860 | case FMODE_READ|FMODE_WRITE: | |
861 | state->n_rdwr++; | |
862 | } | |
dc0b027d | 863 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
864 | } |
865 | ||
dc0b027d | 866 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
867 | { |
868 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
869 | memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data)); | |
870 | memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data)); | |
dc0b027d | 871 | switch (fmode) { |
003707c7 TM |
872 | case FMODE_READ: |
873 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
874 | break; | |
875 | case FMODE_WRITE: | |
876 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
877 | break; | |
878 | case FMODE_READ|FMODE_WRITE: | |
879 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
880 | } | |
e7616923 TM |
881 | } |
882 | ||
dc0b027d | 883 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 884 | { |
8bda4e4c | 885 | write_seqlock(&state->seqlock); |
dc0b027d | 886 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 887 | write_sequnlock(&state->seqlock); |
003707c7 TM |
888 | } |
889 | ||
dc0b027d | 890 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 891 | { |
8bda4e4c TM |
892 | /* |
893 | * Protect the call to nfs4_state_set_mode_locked and | |
894 | * serialise the stateid update | |
895 | */ | |
896 | write_seqlock(&state->seqlock); | |
003707c7 TM |
897 | if (deleg_stateid != NULL) { |
898 | memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data)); | |
899 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
900 | } | |
901 | if (open_stateid != NULL) | |
dc0b027d | 902 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
903 | write_sequnlock(&state->seqlock); |
904 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 905 | update_open_stateflags(state, fmode); |
ec073428 | 906 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
907 | } |
908 | ||
dc0b027d | 909 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
910 | { |
911 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
912 | struct nfs_delegation *deleg_cur; | |
913 | int ret = 0; | |
914 | ||
dc0b027d | 915 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
916 | |
917 | rcu_read_lock(); | |
918 | deleg_cur = rcu_dereference(nfsi->delegation); | |
919 | if (deleg_cur == NULL) | |
920 | goto no_delegation; | |
921 | ||
922 | spin_lock(&deleg_cur->lock); | |
923 | if (nfsi->delegation != deleg_cur || | |
dc0b027d | 924 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
925 | goto no_delegation_unlock; |
926 | ||
927 | if (delegation == NULL) | |
928 | delegation = &deleg_cur->stateid; | |
929 | else if (memcmp(deleg_cur->stateid.data, delegation->data, NFS4_STATEID_SIZE) != 0) | |
930 | goto no_delegation_unlock; | |
931 | ||
b7391f44 | 932 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 933 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
934 | ret = 1; |
935 | no_delegation_unlock: | |
936 | spin_unlock(&deleg_cur->lock); | |
937 | no_delegation: | |
938 | rcu_read_unlock(); | |
939 | ||
940 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 941 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
942 | ret = 1; |
943 | } | |
944 | ||
945 | return ret; | |
946 | } | |
947 | ||
948 | ||
dc0b027d | 949 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
950 | { |
951 | struct nfs_delegation *delegation; | |
952 | ||
953 | rcu_read_lock(); | |
954 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 955 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
956 | rcu_read_unlock(); |
957 | return; | |
958 | } | |
959 | rcu_read_unlock(); | |
960 | nfs_inode_return_delegation(inode); | |
961 | } | |
962 | ||
6ee41268 | 963 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
964 | { |
965 | struct nfs4_state *state = opendata->state; | |
966 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
967 | struct nfs_delegation *delegation; | |
dc0b027d TM |
968 | int open_mode = opendata->o_arg.open_flags & O_EXCL; |
969 | fmode_t fmode = opendata->o_arg.fmode; | |
aac00a8d TM |
970 | nfs4_stateid stateid; |
971 | int ret = -EAGAIN; | |
972 | ||
aac00a8d | 973 | for (;;) { |
dc0b027d | 974 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 975 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
976 | if (can_open_cached(state, fmode, open_mode)) { |
977 | update_open_stateflags(state, fmode); | |
6ee41268 | 978 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
979 | goto out_return_state; |
980 | } | |
981 | spin_unlock(&state->owner->so_lock); | |
982 | } | |
34310430 TM |
983 | rcu_read_lock(); |
984 | delegation = rcu_dereference(nfsi->delegation); | |
985 | if (delegation == NULL || | |
dc0b027d | 986 | !can_open_delegated(delegation, fmode)) { |
34310430 | 987 | rcu_read_unlock(); |
aac00a8d | 988 | break; |
34310430 | 989 | } |
aac00a8d TM |
990 | /* Save the delegation */ |
991 | memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data)); | |
992 | rcu_read_unlock(); | |
af22f94a | 993 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
994 | if (ret != 0) |
995 | goto out; | |
996 | ret = -EAGAIN; | |
34310430 TM |
997 | |
998 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 999 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1000 | goto out_return_state; |
aac00a8d | 1001 | } |
aac00a8d TM |
1002 | out: |
1003 | return ERR_PTR(ret); | |
1004 | out_return_state: | |
1005 | atomic_inc(&state->count); | |
1006 | return state; | |
1007 | } | |
1008 | ||
24ac23ab TM |
1009 | static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) |
1010 | { | |
1011 | struct inode *inode; | |
1012 | struct nfs4_state *state = NULL; | |
003707c7 | 1013 | struct nfs_delegation *delegation; |
1b370bc2 | 1014 | int ret; |
24ac23ab | 1015 | |
aac00a8d | 1016 | if (!data->rpc_done) { |
6ee41268 | 1017 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1018 | goto out; |
1019 | } | |
1020 | ||
1b370bc2 | 1021 | ret = -EAGAIN; |
24ac23ab | 1022 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1023 | goto err; |
24ac23ab | 1024 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 1025 | ret = PTR_ERR(inode); |
03f28e3a | 1026 | if (IS_ERR(inode)) |
1b370bc2 TM |
1027 | goto err; |
1028 | ret = -ENOMEM; | |
24ac23ab TM |
1029 | state = nfs4_get_open_state(inode, data->owner); |
1030 | if (state == NULL) | |
1b370bc2 | 1031 | goto err_put_inode; |
549d6ed5 | 1032 | if (data->o_res.delegation_type != 0) { |
549d6ed5 TM |
1033 | int delegation_flags = 0; |
1034 | ||
003707c7 TM |
1035 | rcu_read_lock(); |
1036 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
1037 | if (delegation) | |
1038 | delegation_flags = delegation->flags; | |
1039 | rcu_read_unlock(); | |
15c831bf | 1040 | if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) |
549d6ed5 TM |
1041 | nfs_inode_set_delegation(state->inode, |
1042 | data->owner->so_cred, | |
1043 | &data->o_res); | |
1044 | else | |
1045 | nfs_inode_reclaim_delegation(state->inode, | |
1046 | data->owner->so_cred, | |
1047 | &data->o_res); | |
1048 | } | |
34310430 TM |
1049 | |
1050 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
dc0b027d | 1051 | data->o_arg.fmode); |
24ac23ab | 1052 | iput(inode); |
aac00a8d | 1053 | out: |
24ac23ab | 1054 | return state; |
1b370bc2 TM |
1055 | err_put_inode: |
1056 | iput(inode); | |
1057 | err: | |
1058 | return ERR_PTR(ret); | |
24ac23ab TM |
1059 | } |
1060 | ||
864472e9 TM |
1061 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1062 | { | |
1063 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1064 | struct nfs_open_context *ctx; | |
1065 | ||
1066 | spin_lock(&state->inode->i_lock); | |
1067 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1068 | if (ctx->state != state) | |
1069 | continue; | |
1070 | get_nfs_open_context(ctx); | |
1071 | spin_unlock(&state->inode->i_lock); | |
1072 | return ctx; | |
1073 | } | |
1074 | spin_unlock(&state->inode->i_lock); | |
1075 | return ERR_PTR(-ENOENT); | |
1076 | } | |
1077 | ||
6f220ed5 TM |
1078 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
1079 | { | |
1080 | struct nfs4_opendata *opendata; | |
1081 | ||
8535b2be | 1082 | opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL, GFP_NOFS); |
6f220ed5 TM |
1083 | if (opendata == NULL) |
1084 | return ERR_PTR(-ENOMEM); | |
1085 | opendata->state = state; | |
1086 | atomic_inc(&state->count); | |
1087 | return opendata; | |
1088 | } | |
1089 | ||
dc0b027d | 1090 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1091 | { |
2ced46c2 | 1092 | struct nfs4_state *newstate; |
864472e9 TM |
1093 | int ret; |
1094 | ||
dc0b027d TM |
1095 | opendata->o_arg.open_flags = 0; |
1096 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1097 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1098 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1099 | nfs4_init_opendata_res(opendata); | |
b257957e | 1100 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1101 | if (ret != 0) |
1102 | return ret; | |
2ced46c2 | 1103 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1104 | if (IS_ERR(newstate)) |
1105 | return PTR_ERR(newstate); | |
dc0b027d | 1106 | nfs4_close_state(&opendata->path, newstate, fmode); |
2ced46c2 | 1107 | *res = newstate; |
864472e9 TM |
1108 | return 0; |
1109 | } | |
1110 | ||
1111 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1112 | { | |
864472e9 | 1113 | struct nfs4_state *newstate; |
864472e9 TM |
1114 | int ret; |
1115 | ||
1116 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1117 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1118 | smp_rmb(); |
1119 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1120 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1121 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1122 | if (ret != 0) |
1123 | return ret; | |
2ced46c2 TM |
1124 | if (newstate != state) |
1125 | return -ESTALE; | |
864472e9 TM |
1126 | } |
1127 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1128 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1129 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1130 | if (ret != 0) |
1131 | return ret; | |
2ced46c2 TM |
1132 | if (newstate != state) |
1133 | return -ESTALE; | |
864472e9 TM |
1134 | } |
1135 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1136 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1137 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1138 | if (ret != 0) |
1139 | return ret; | |
2ced46c2 TM |
1140 | if (newstate != state) |
1141 | return -ESTALE; | |
864472e9 | 1142 | } |
1ac7e2fd TM |
1143 | /* |
1144 | * We may have performed cached opens for all three recoveries. | |
1145 | * Check if we need to update the current stateid. | |
1146 | */ | |
1147 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
1148 | memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) { | |
8bda4e4c | 1149 | write_seqlock(&state->seqlock); |
1ac7e2fd TM |
1150 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
1151 | memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)); | |
8bda4e4c | 1152 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1153 | } |
864472e9 TM |
1154 | return 0; |
1155 | } | |
1156 | ||
1da177e4 LT |
1157 | /* |
1158 | * OPEN_RECLAIM: | |
1159 | * reclaim state on the server after a reboot. | |
1da177e4 | 1160 | */ |
539cd03a | 1161 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1162 | { |
1ac7e2fd | 1163 | struct nfs_delegation *delegation; |
864472e9 | 1164 | struct nfs4_opendata *opendata; |
dc0b027d | 1165 | fmode_t delegation_type = 0; |
1da177e4 LT |
1166 | int status; |
1167 | ||
6f220ed5 TM |
1168 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1169 | if (IS_ERR(opendata)) | |
1170 | return PTR_ERR(opendata); | |
864472e9 TM |
1171 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1172 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1173 | rcu_read_lock(); |
1174 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1175 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1176 | delegation_type = delegation->type; |
1ac7e2fd | 1177 | rcu_read_unlock(); |
864472e9 TM |
1178 | opendata->o_arg.u.delegation_type = delegation_type; |
1179 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1180 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1181 | return status; |
1182 | } | |
1183 | ||
539cd03a | 1184 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1185 | { |
1186 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1187 | struct nfs4_exception exception = { }; | |
1188 | int err; | |
1189 | do { | |
539cd03a | 1190 | err = _nfs4_do_open_reclaim(ctx, state); |
168667c4 | 1191 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1192 | break; |
1193 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1194 | } while (exception.retry); |
1195 | return err; | |
1196 | } | |
1197 | ||
864472e9 TM |
1198 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1199 | { | |
1200 | struct nfs_open_context *ctx; | |
1201 | int ret; | |
1202 | ||
1203 | ctx = nfs4_state_find_open_context(state); | |
1204 | if (IS_ERR(ctx)) | |
1205 | return PTR_ERR(ctx); | |
539cd03a | 1206 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1207 | put_nfs_open_context(ctx); |
1208 | return ret; | |
1209 | } | |
1210 | ||
13437e12 | 1211 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1212 | { |
e56e0b78 | 1213 | struct nfs4_opendata *opendata; |
864472e9 | 1214 | int ret; |
1da177e4 | 1215 | |
6f220ed5 TM |
1216 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1217 | if (IS_ERR(opendata)) | |
1218 | return PTR_ERR(opendata); | |
e56e0b78 | 1219 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
13437e12 | 1220 | memcpy(opendata->o_arg.u.delegation.data, stateid->data, |
e56e0b78 | 1221 | sizeof(opendata->o_arg.u.delegation.data)); |
864472e9 | 1222 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1223 | nfs4_opendata_put(opendata); |
864472e9 | 1224 | return ret; |
1da177e4 LT |
1225 | } |
1226 | ||
13437e12 | 1227 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1228 | { |
1229 | struct nfs4_exception exception = { }; | |
539cd03a | 1230 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1231 | int err; |
1232 | do { | |
13437e12 | 1233 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1234 | switch (err) { |
1235 | case 0: | |
965b5d67 TM |
1236 | case -ENOENT: |
1237 | case -ESTALE: | |
1238 | goto out; | |
bcfa49f6 RL |
1239 | case -NFS4ERR_BADSESSION: |
1240 | case -NFS4ERR_BADSLOT: | |
1241 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1242 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1243 | case -NFS4ERR_DEADSESSION: | |
1244 | nfs4_schedule_state_recovery( | |
1245 | server->nfs_client); | |
1246 | goto out; | |
1da177e4 LT |
1247 | case -NFS4ERR_STALE_CLIENTID: |
1248 | case -NFS4ERR_STALE_STATEID: | |
1249 | case -NFS4ERR_EXPIRED: | |
1250 | /* Don't recall a delegation if it was lost */ | |
7539bbab | 1251 | nfs4_schedule_state_recovery(server->nfs_client); |
965b5d67 TM |
1252 | goto out; |
1253 | case -ERESTARTSYS: | |
1254 | /* | |
1255 | * The show must go on: exit, but mark the | |
1256 | * stateid as needing recovery. | |
1257 | */ | |
1258 | case -NFS4ERR_ADMIN_REVOKED: | |
1259 | case -NFS4ERR_BAD_STATEID: | |
1260 | nfs4_state_mark_reclaim_nograce(server->nfs_client, state); | |
168667c4 TM |
1261 | case -EKEYEXPIRED: |
1262 | /* | |
1263 | * User RPCSEC_GSS context has expired. | |
1264 | * We cannot recover this stateid now, so | |
1265 | * skip it and allow recovery thread to | |
1266 | * proceed. | |
1267 | */ | |
965b5d67 TM |
1268 | case -ENOMEM: |
1269 | err = 0; | |
1270 | goto out; | |
1da177e4 LT |
1271 | } |
1272 | err = nfs4_handle_exception(server, err, &exception); | |
1273 | } while (exception.retry); | |
965b5d67 | 1274 | out: |
1da177e4 LT |
1275 | return err; |
1276 | } | |
1277 | ||
cdd4e68b TM |
1278 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1279 | { | |
1280 | struct nfs4_opendata *data = calldata; | |
1281 | ||
1282 | data->rpc_status = task->tk_status; | |
26e976a8 | 1283 | if (data->rpc_status == 0) { |
cdd4e68b TM |
1284 | memcpy(data->o_res.stateid.data, data->c_res.stateid.data, |
1285 | sizeof(data->o_res.stateid.data)); | |
bb22629e | 1286 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1287 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1288 | data->rpc_done = 1; |
26e976a8 | 1289 | } |
cdd4e68b TM |
1290 | } |
1291 | ||
1292 | static void nfs4_open_confirm_release(void *calldata) | |
1293 | { | |
1294 | struct nfs4_opendata *data = calldata; | |
1295 | struct nfs4_state *state = NULL; | |
1296 | ||
1297 | /* If this request hasn't been cancelled, do nothing */ | |
1298 | if (data->cancelled == 0) | |
1299 | goto out_free; | |
1300 | /* In case of error, no cleanup! */ | |
3e309914 | 1301 | if (!data->rpc_done) |
cdd4e68b | 1302 | goto out_free; |
cdd4e68b | 1303 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1304 | if (!IS_ERR(state)) |
dc0b027d | 1305 | nfs4_close_state(&data->path, state, data->o_arg.fmode); |
cdd4e68b | 1306 | out_free: |
c6d00e63 | 1307 | nfs4_opendata_put(data); |
cdd4e68b TM |
1308 | } |
1309 | ||
1310 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1311 | .rpc_call_done = nfs4_open_confirm_done, |
1312 | .rpc_release = nfs4_open_confirm_release, | |
1313 | }; | |
1314 | ||
1315 | /* | |
1316 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1317 | */ | |
1318 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1319 | { | |
1320 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1321 | struct rpc_task *task; | |
5138fde0 TM |
1322 | struct rpc_message msg = { |
1323 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1324 | .rpc_argp = &data->c_arg, | |
1325 | .rpc_resp = &data->c_res, | |
1326 | .rpc_cred = data->owner->so_cred, | |
1327 | }; | |
c970aa85 TM |
1328 | struct rpc_task_setup task_setup_data = { |
1329 | .rpc_client = server->client, | |
5138fde0 | 1330 | .rpc_message = &msg, |
c970aa85 TM |
1331 | .callback_ops = &nfs4_open_confirm_ops, |
1332 | .callback_data = data, | |
101070ca | 1333 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1334 | .flags = RPC_TASK_ASYNC, |
1335 | }; | |
1da177e4 LT |
1336 | int status; |
1337 | ||
c6d00e63 | 1338 | kref_get(&data->kref); |
3e309914 TM |
1339 | data->rpc_done = 0; |
1340 | data->rpc_status = 0; | |
5138fde0 | 1341 | data->timestamp = jiffies; |
c970aa85 | 1342 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1343 | if (IS_ERR(task)) |
cdd4e68b | 1344 | return PTR_ERR(task); |
cdd4e68b TM |
1345 | status = nfs4_wait_for_completion_rpc_task(task); |
1346 | if (status != 0) { | |
1347 | data->cancelled = 1; | |
1348 | smp_wmb(); | |
1349 | } else | |
1350 | status = data->rpc_status; | |
e6b3c4db | 1351 | rpc_put_task(task); |
1da177e4 LT |
1352 | return status; |
1353 | } | |
1354 | ||
24ac23ab | 1355 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1356 | { |
24ac23ab TM |
1357 | struct nfs4_opendata *data = calldata; |
1358 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1359 | |
24ac23ab TM |
1360 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
1361 | return; | |
aac00a8d TM |
1362 | /* |
1363 | * Check if we still need to send an OPEN call, or if we can use | |
1364 | * a delegation instead. | |
1365 | */ | |
1366 | if (data->state != NULL) { | |
1367 | struct nfs_delegation *delegation; | |
1368 | ||
dc0b027d | 1369 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1370 | goto out_no_action; |
aac00a8d TM |
1371 | rcu_read_lock(); |
1372 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
1373 | if (delegation != NULL && | |
15c831bf | 1374 | test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) == 0) { |
aac00a8d | 1375 | rcu_read_unlock(); |
6ee41268 | 1376 | goto out_no_action; |
aac00a8d TM |
1377 | } |
1378 | rcu_read_unlock(); | |
1379 | } | |
24ac23ab | 1380 | /* Update sequence id. */ |
9f958ab8 | 1381 | data->o_arg.id = sp->so_owner_id.id; |
1f0e890d | 1382 | data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; |
6f220ed5 | 1383 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1384 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
6f220ed5 TM |
1385 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1386 | } | |
26e976a8 | 1387 | data->timestamp = jiffies; |
035168ab | 1388 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c AA |
1389 | &data->o_arg.seq_args, |
1390 | &data->o_res.seq_res, 1, task)) | |
1391 | return; | |
5138fde0 | 1392 | rpc_call_start(task); |
6ee41268 TM |
1393 | return; |
1394 | out_no_action: | |
1395 | task->tk_action = NULL; | |
1396 | ||
24ac23ab | 1397 | } |
1da177e4 | 1398 | |
b257957e AB |
1399 | static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata) |
1400 | { | |
1401 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
1402 | nfs4_open_prepare(task, calldata); | |
1403 | } | |
1404 | ||
24ac23ab TM |
1405 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1406 | { | |
1407 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1408 | |
24ac23ab | 1409 | data->rpc_status = task->tk_status; |
d898528c | 1410 | |
14516c3a TM |
1411 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1412 | return; | |
d898528c | 1413 | |
24ac23ab TM |
1414 | if (task->tk_status == 0) { |
1415 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1416 | case S_IFREG: |
1417 | break; | |
1418 | case S_IFLNK: | |
24ac23ab | 1419 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1420 | break; |
1421 | case S_IFDIR: | |
24ac23ab | 1422 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1423 | break; |
1424 | default: | |
24ac23ab | 1425 | data->rpc_status = -ENOTDIR; |
6f926b5b | 1426 | } |
26e976a8 | 1427 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1428 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1429 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1430 | } |
3e309914 | 1431 | data->rpc_done = 1; |
24ac23ab | 1432 | } |
6f926b5b | 1433 | |
24ac23ab TM |
1434 | static void nfs4_open_release(void *calldata) |
1435 | { | |
1436 | struct nfs4_opendata *data = calldata; | |
1437 | struct nfs4_state *state = NULL; | |
1438 | ||
1439 | /* If this request hasn't been cancelled, do nothing */ | |
1440 | if (data->cancelled == 0) | |
1441 | goto out_free; | |
1442 | /* In case of error, no cleanup! */ | |
3e309914 | 1443 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1444 | goto out_free; |
1445 | /* In case we need an open_confirm, no cleanup! */ | |
1446 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1447 | goto out_free; | |
24ac23ab | 1448 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1449 | if (!IS_ERR(state)) |
dc0b027d | 1450 | nfs4_close_state(&data->path, state, data->o_arg.fmode); |
24ac23ab | 1451 | out_free: |
c6d00e63 | 1452 | nfs4_opendata_put(data); |
24ac23ab TM |
1453 | } |
1454 | ||
1455 | static const struct rpc_call_ops nfs4_open_ops = { | |
1456 | .rpc_call_prepare = nfs4_open_prepare, | |
1457 | .rpc_call_done = nfs4_open_done, | |
1458 | .rpc_release = nfs4_open_release, | |
1459 | }; | |
1460 | ||
b257957e AB |
1461 | static const struct rpc_call_ops nfs4_recover_open_ops = { |
1462 | .rpc_call_prepare = nfs4_recover_open_prepare, | |
1463 | .rpc_call_done = nfs4_open_done, | |
1464 | .rpc_release = nfs4_open_release, | |
1465 | }; | |
1466 | ||
1467 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) | |
24ac23ab TM |
1468 | { |
1469 | struct inode *dir = data->dir->d_inode; | |
1470 | struct nfs_server *server = NFS_SERVER(dir); | |
1471 | struct nfs_openargs *o_arg = &data->o_arg; | |
1472 | struct nfs_openres *o_res = &data->o_res; | |
1473 | struct rpc_task *task; | |
5138fde0 TM |
1474 | struct rpc_message msg = { |
1475 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1476 | .rpc_argp = o_arg, | |
1477 | .rpc_resp = o_res, | |
1478 | .rpc_cred = data->owner->so_cred, | |
1479 | }; | |
c970aa85 TM |
1480 | struct rpc_task_setup task_setup_data = { |
1481 | .rpc_client = server->client, | |
5138fde0 | 1482 | .rpc_message = &msg, |
c970aa85 TM |
1483 | .callback_ops = &nfs4_open_ops, |
1484 | .callback_data = data, | |
101070ca | 1485 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1486 | .flags = RPC_TASK_ASYNC, |
1487 | }; | |
24ac23ab TM |
1488 | int status; |
1489 | ||
c6d00e63 | 1490 | kref_get(&data->kref); |
3e309914 TM |
1491 | data->rpc_done = 0; |
1492 | data->rpc_status = 0; | |
2ced46c2 | 1493 | data->cancelled = 0; |
b257957e AB |
1494 | if (isrecover) |
1495 | task_setup_data.callback_ops = &nfs4_recover_open_ops; | |
c970aa85 | 1496 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1497 | if (IS_ERR(task)) |
1498 | return PTR_ERR(task); | |
1499 | status = nfs4_wait_for_completion_rpc_task(task); | |
1500 | if (status != 0) { | |
1501 | data->cancelled = 1; | |
1502 | smp_wmb(); | |
1503 | } else | |
1504 | status = data->rpc_status; | |
1505 | rpc_put_task(task); | |
1506 | ||
1507 | return status; | |
1508 | } | |
1509 | ||
1510 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1511 | { | |
1512 | struct inode *dir = data->dir->d_inode; | |
1513 | struct nfs_openres *o_res = &data->o_res; | |
1514 | int status; | |
1515 | ||
1516 | status = nfs4_run_open_task(data, 1); | |
1517 | if (status != 0 || !data->rpc_done) | |
1518 | return status; | |
1519 | ||
1520 | nfs_refresh_inode(dir, o_res->dir_attr); | |
1521 | ||
1522 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { | |
1523 | status = _nfs4_proc_open_confirm(data); | |
1524 | if (status != 0) | |
1525 | return status; | |
1526 | } | |
1527 | ||
1528 | return status; | |
1529 | } | |
1530 | ||
1531 | /* | |
1532 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1533 | */ | |
1534 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1535 | { | |
1536 | struct inode *dir = data->dir->d_inode; | |
1537 | struct nfs_server *server = NFS_SERVER(dir); | |
1538 | struct nfs_openargs *o_arg = &data->o_arg; | |
1539 | struct nfs_openres *o_res = &data->o_res; | |
1540 | int status; | |
1541 | ||
1542 | status = nfs4_run_open_task(data, 0); | |
3e309914 | 1543 | if (status != 0 || !data->rpc_done) |
24ac23ab TM |
1544 | return status; |
1545 | ||
56ae19f3 TM |
1546 | if (o_arg->open_flags & O_CREAT) { |
1547 | update_changeattr(dir, &o_res->cinfo); | |
1548 | nfs_post_op_update_inode(dir, o_res->dir_attr); | |
1549 | } else | |
1550 | nfs_refresh_inode(dir, o_res->dir_attr); | |
0df5dd4a TM |
1551 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1552 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1553 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1554 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1555 | if (status != 0) |
24ac23ab | 1556 | return status; |
1da177e4 LT |
1557 | } |
1558 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1559 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1560 | return 0; |
1da177e4 LT |
1561 | } |
1562 | ||
10afec90 | 1563 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
58d9714a | 1564 | { |
7539bbab | 1565 | struct nfs_client *clp = server->nfs_client; |
a78cb57a | 1566 | unsigned int loop; |
6b30954e | 1567 | int ret; |
58d9714a | 1568 | |
a78cb57a | 1569 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { |
65de872e | 1570 | ret = nfs4_wait_clnt_recover(clp); |
6b30954e | 1571 | if (ret != 0) |
a78cb57a | 1572 | break; |
e598d843 TM |
1573 | if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) && |
1574 | !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state)) | |
6b30954e | 1575 | break; |
58d9714a | 1576 | nfs4_schedule_state_recovery(clp); |
a78cb57a | 1577 | ret = -EIO; |
6b30954e | 1578 | } |
a78cb57a | 1579 | return ret; |
58d9714a TM |
1580 | } |
1581 | ||
1da177e4 LT |
1582 | /* |
1583 | * OPEN_EXPIRED: | |
1584 | * reclaim state on the server after a network partition. | |
1585 | * Assumes caller holds the appropriate lock | |
1586 | */ | |
539cd03a | 1587 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1588 | { |
e56e0b78 | 1589 | struct nfs4_opendata *opendata; |
864472e9 | 1590 | int ret; |
1da177e4 | 1591 | |
6f220ed5 TM |
1592 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1593 | if (IS_ERR(opendata)) | |
1594 | return PTR_ERR(opendata); | |
864472e9 | 1595 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1596 | if (ret == -ESTALE) |
539cd03a | 1597 | d_drop(ctx->path.dentry); |
c6d00e63 | 1598 | nfs4_opendata_put(opendata); |
864472e9 | 1599 | return ret; |
1da177e4 LT |
1600 | } |
1601 | ||
a9ed2e25 | 1602 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1603 | { |
539cd03a | 1604 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1605 | struct nfs4_exception exception = { }; |
1606 | int err; | |
1607 | ||
1608 | do { | |
539cd03a | 1609 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1610 | switch (err) { |
1611 | default: | |
1612 | goto out; | |
1613 | case -NFS4ERR_GRACE: | |
1614 | case -NFS4ERR_DELAY: | |
1615 | nfs4_handle_exception(server, err, &exception); | |
1616 | err = 0; | |
1617 | } | |
202b50dc | 1618 | } while (exception.retry); |
a9ed2e25 | 1619 | out: |
202b50dc TM |
1620 | return err; |
1621 | } | |
1622 | ||
1da177e4 LT |
1623 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1624 | { | |
1da177e4 | 1625 | struct nfs_open_context *ctx; |
864472e9 | 1626 | int ret; |
1da177e4 | 1627 | |
864472e9 TM |
1628 | ctx = nfs4_state_find_open_context(state); |
1629 | if (IS_ERR(ctx)) | |
1630 | return PTR_ERR(ctx); | |
539cd03a | 1631 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1632 | put_nfs_open_context(ctx); |
1633 | return ret; | |
1da177e4 LT |
1634 | } |
1635 | ||
aa53ed54 JL |
1636 | /* |
1637 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1638 | * fields corresponding to attributes that were used to store the verifier. | |
1639 | * Make sure we clobber those fields in the later setattr call | |
1640 | */ | |
1641 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1642 | { | |
1643 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1644 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1645 | sattr->ia_valid |= ATTR_ATIME; | |
1646 | ||
1647 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1648 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1649 | sattr->ia_valid |= ATTR_MTIME; | |
1650 | } | |
1651 | ||
1da177e4 | 1652 | /* |
24ac23ab | 1653 | * Returns a referenced nfs4_state |
1da177e4 | 1654 | */ |
dc0b027d | 1655 | static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res) |
1da177e4 LT |
1656 | { |
1657 | struct nfs4_state_owner *sp; | |
1658 | struct nfs4_state *state = NULL; | |
1659 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1660 | struct nfs4_opendata *opendata; |
aac00a8d | 1661 | int status; |
1da177e4 LT |
1662 | |
1663 | /* Protect against reboot recovery conflicts */ | |
1da177e4 LT |
1664 | status = -ENOMEM; |
1665 | if (!(sp = nfs4_get_state_owner(server, cred))) { | |
1666 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); | |
1667 | goto out_err; | |
1668 | } | |
58d9714a TM |
1669 | status = nfs4_recover_expired_lease(server); |
1670 | if (status != 0) | |
b4454fe1 | 1671 | goto err_put_state_owner; |
aac00a8d | 1672 | if (path->dentry->d_inode != NULL) |
dc0b027d | 1673 | nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode); |
58d9714a | 1674 | status = -ENOMEM; |
8535b2be | 1675 | opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr, GFP_KERNEL); |
e56e0b78 | 1676 | if (opendata == NULL) |
95d35cb4 | 1677 | goto err_put_state_owner; |
1da177e4 | 1678 | |
aac00a8d TM |
1679 | if (path->dentry->d_inode != NULL) |
1680 | opendata->state = nfs4_get_open_state(path->dentry->d_inode, sp); | |
1681 | ||
24ac23ab | 1682 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1683 | if (status != 0) |
c6d00e63 | 1684 | goto err_opendata_put; |
1da177e4 | 1685 | |
24ac23ab | 1686 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1687 | status = PTR_ERR(state); |
1688 | if (IS_ERR(state)) | |
c6d00e63 | 1689 | goto err_opendata_put; |
0df5dd4a | 1690 | if (server->caps & NFS_CAP_POSIX_LOCK) |
8e469ebd | 1691 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); |
0ab64e0e TM |
1692 | |
1693 | if (opendata->o_arg.open_flags & O_EXCL) { | |
1694 | nfs4_exclusive_attrset(opendata, sattr); | |
1695 | ||
1696 | nfs_fattr_init(opendata->o_res.f_attr); | |
1697 | status = nfs4_do_setattr(state->inode, cred, | |
1698 | opendata->o_res.f_attr, sattr, | |
1699 | state); | |
1700 | if (status == 0) | |
1701 | nfs_setattr_update_inode(state->inode, sattr); | |
1702 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
1703 | } | |
c6d00e63 | 1704 | nfs4_opendata_put(opendata); |
1da177e4 | 1705 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1706 | *res = state; |
1707 | return 0; | |
c6d00e63 TM |
1708 | err_opendata_put: |
1709 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
1710 | err_put_state_owner: |
1711 | nfs4_put_state_owner(sp); | |
1da177e4 | 1712 | out_err: |
1da177e4 LT |
1713 | *res = NULL; |
1714 | return status; | |
1715 | } | |
1716 | ||
1717 | ||
dc0b027d | 1718 | static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred) |
1da177e4 LT |
1719 | { |
1720 | struct nfs4_exception exception = { }; | |
1721 | struct nfs4_state *res; | |
1722 | int status; | |
1723 | ||
1724 | do { | |
dc0b027d | 1725 | status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res); |
1da177e4 LT |
1726 | if (status == 0) |
1727 | break; | |
1728 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1729 | * book-keeping w.r.t. state-changing operations | |
1730 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1731 | * It is actually a sign of a bug on the client or on the server. | |
1732 | * | |
1733 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1734 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1735 | * have unhashed the old state_owner for us, and that we can |
1736 | * therefore safely retry using a new one. We should still warn | |
1737 | * the user though... | |
1738 | */ | |
1739 | if (status == -NFS4ERR_BAD_SEQID) { | |
6f43ddcc TM |
1740 | printk(KERN_WARNING "NFS: v4 server %s " |
1741 | " returned a bad sequence-id error!\n", | |
1742 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1743 | exception.retry = 1; |
1744 | continue; | |
1745 | } | |
550f5747 TM |
1746 | /* |
1747 | * BAD_STATEID on OPEN means that the server cancelled our | |
1748 | * state before it received the OPEN_CONFIRM. | |
1749 | * Recover by retrying the request as per the discussion | |
1750 | * on Page 181 of RFC3530. | |
1751 | */ | |
1752 | if (status == -NFS4ERR_BAD_STATEID) { | |
1753 | exception.retry = 1; | |
1754 | continue; | |
1755 | } | |
aac00a8d TM |
1756 | if (status == -EAGAIN) { |
1757 | /* We must have found a delegation */ | |
1758 | exception.retry = 1; | |
1759 | continue; | |
1760 | } | |
1da177e4 LT |
1761 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1762 | status, &exception)); | |
1763 | } while (exception.retry); | |
1764 | return res; | |
1765 | } | |
1766 | ||
659bfcd6 TM |
1767 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1768 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1769 | struct nfs4_state *state) | |
1da177e4 | 1770 | { |
3e4f6290 | 1771 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1772 | struct nfs_setattrargs arg = { |
3e4f6290 | 1773 | .fh = NFS_FH(inode), |
1da177e4 LT |
1774 | .iap = sattr, |
1775 | .server = server, | |
1776 | .bitmask = server->attr_bitmask, | |
1777 | }; | |
1778 | struct nfs_setattrres res = { | |
1779 | .fattr = fattr, | |
1780 | .server = server, | |
1781 | }; | |
1782 | struct rpc_message msg = { | |
659bfcd6 TM |
1783 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
1784 | .rpc_argp = &arg, | |
1785 | .rpc_resp = &res, | |
1786 | .rpc_cred = cred, | |
1da177e4 | 1787 | }; |
26e976a8 | 1788 | unsigned long timestamp = jiffies; |
65e4308d | 1789 | int status; |
1da177e4 | 1790 | |
0e574af1 | 1791 | nfs_fattr_init(fattr); |
1da177e4 | 1792 | |
3e4f6290 TM |
1793 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) { |
1794 | /* Use that stateid */ | |
1795 | } else if (state != NULL) { | |
77041ed9 | 1796 | nfs4_copy_stateid(&arg.stateid, state, current->files, current->tgid); |
08e9eac4 | 1797 | } else |
1da177e4 LT |
1798 | memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid)); |
1799 | ||
cccef3b9 | 1800 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
26e976a8 TM |
1801 | if (status == 0 && state != NULL) |
1802 | renew_lease(server, timestamp); | |
65e4308d | 1803 | return status; |
1da177e4 LT |
1804 | } |
1805 | ||
659bfcd6 TM |
1806 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1807 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1808 | struct nfs4_state *state) | |
1da177e4 | 1809 | { |
3e4f6290 | 1810 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
1811 | struct nfs4_exception exception = { }; |
1812 | int err; | |
1813 | do { | |
1814 | err = nfs4_handle_exception(server, | |
659bfcd6 | 1815 | _nfs4_do_setattr(inode, cred, fattr, sattr, state), |
1da177e4 LT |
1816 | &exception); |
1817 | } while (exception.retry); | |
1818 | return err; | |
1819 | } | |
1820 | ||
1821 | struct nfs4_closedata { | |
4a35bd41 | 1822 | struct path path; |
1da177e4 LT |
1823 | struct inode *inode; |
1824 | struct nfs4_state *state; | |
1825 | struct nfs_closeargs arg; | |
1826 | struct nfs_closeres res; | |
516a6af6 | 1827 | struct nfs_fattr fattr; |
26e976a8 | 1828 | unsigned long timestamp; |
1da177e4 LT |
1829 | }; |
1830 | ||
963d8fe5 | 1831 | static void nfs4_free_closedata(void *data) |
9512135d | 1832 | { |
963d8fe5 TM |
1833 | struct nfs4_closedata *calldata = data; |
1834 | struct nfs4_state_owner *sp = calldata->state->owner; | |
9512135d TM |
1835 | |
1836 | nfs4_put_open_state(calldata->state); | |
1837 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 1838 | nfs4_put_state_owner(sp); |
31f31db1 | 1839 | path_put(&calldata->path); |
9512135d TM |
1840 | kfree(calldata); |
1841 | } | |
1842 | ||
88069f77 TM |
1843 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
1844 | fmode_t fmode) | |
1845 | { | |
1846 | spin_lock(&state->owner->so_lock); | |
1847 | if (!(fmode & FMODE_READ)) | |
1848 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1849 | if (!(fmode & FMODE_WRITE)) | |
1850 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1851 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1852 | spin_unlock(&state->owner->so_lock); | |
1853 | } | |
1854 | ||
963d8fe5 | 1855 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 1856 | { |
963d8fe5 | 1857 | struct nfs4_closedata *calldata = data; |
1da177e4 | 1858 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
1859 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
1860 | ||
14516c3a TM |
1861 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
1862 | return; | |
1da177e4 LT |
1863 | /* hmm. we are done with the inode, and in the process of freeing |
1864 | * the state_owner. we keep this around to process errors | |
1865 | */ | |
1da177e4 LT |
1866 | switch (task->tk_status) { |
1867 | case 0: | |
45328c35 | 1868 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 1869 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
1870 | nfs4_close_clear_stateid_flags(state, |
1871 | calldata->arg.fmode); | |
1da177e4 LT |
1872 | break; |
1873 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
1874 | case -NFS4ERR_OLD_STATEID: |
1875 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 1876 | case -NFS4ERR_EXPIRED: |
dc0b027d | 1877 | if (calldata->arg.fmode == 0) |
9e33bed5 | 1878 | break; |
1da177e4 | 1879 | default: |
72211dbe TM |
1880 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
1881 | rpc_restart_call_prepare(task); | |
1da177e4 | 1882 | } |
72211dbe | 1883 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 1884 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
1da177e4 LT |
1885 | } |
1886 | ||
4ce70ada | 1887 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 1888 | { |
4ce70ada | 1889 | struct nfs4_closedata *calldata = data; |
9512135d | 1890 | struct nfs4_state *state = calldata->state; |
88069f77 | 1891 | int call_close = 0; |
9512135d | 1892 | |
963d8fe5 | 1893 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 1894 | return; |
003707c7 | 1895 | |
88069f77 TM |
1896 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
1897 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 1898 | spin_lock(&state->owner->so_lock); |
003707c7 | 1899 | /* Calculate the change in open mode */ |
e7616923 | 1900 | if (state->n_rdwr == 0) { |
003707c7 | 1901 | if (state->n_rdonly == 0) { |
88069f77 TM |
1902 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
1903 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
1904 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
1905 | } |
1906 | if (state->n_wronly == 0) { | |
88069f77 TM |
1907 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
1908 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
1909 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 1910 | } |
e7616923 | 1911 | } |
4cecb76f | 1912 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
1913 | |
1914 | if (!call_close) { | |
963d8fe5 TM |
1915 | /* Note: exit _without_ calling nfs4_close_done */ |
1916 | task->tk_action = NULL; | |
9512135d TM |
1917 | return; |
1918 | } | |
88069f77 TM |
1919 | |
1920 | if (calldata->arg.fmode == 0) | |
1921 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; | |
1922 | ||
516a6af6 | 1923 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 1924 | calldata->timestamp = jiffies; |
035168ab | 1925 | if (nfs4_setup_sequence(NFS_SERVER(calldata->inode), |
19ddab06 AA |
1926 | &calldata->arg.seq_args, &calldata->res.seq_res, |
1927 | 1, task)) | |
1928 | return; | |
5138fde0 | 1929 | rpc_call_start(task); |
1da177e4 LT |
1930 | } |
1931 | ||
963d8fe5 | 1932 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 1933 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
1934 | .rpc_call_done = nfs4_close_done, |
1935 | .rpc_release = nfs4_free_closedata, | |
1936 | }; | |
1937 | ||
1da177e4 LT |
1938 | /* |
1939 | * It is possible for data to be read/written from a mem-mapped file | |
1940 | * after the sys_close call (which hits the vfs layer as a flush). | |
1941 | * This means that we can't safely call nfsv4 close on a file until | |
1942 | * the inode is cleared. This in turn means that we are not good | |
1943 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
1944 | * share state even when we are done with one of the three share | |
1945 | * stateid's in the inode. | |
1946 | * | |
1947 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
1948 | */ | |
8535b2be | 1949 | int nfs4_do_close(struct path *path, struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 1950 | { |
4a35bd41 | 1951 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 1952 | struct nfs4_closedata *calldata; |
b39e625b TM |
1953 | struct nfs4_state_owner *sp = state->owner; |
1954 | struct rpc_task *task; | |
5138fde0 TM |
1955 | struct rpc_message msg = { |
1956 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
1957 | .rpc_cred = state->owner->so_cred, | |
1958 | }; | |
c970aa85 TM |
1959 | struct rpc_task_setup task_setup_data = { |
1960 | .rpc_client = server->client, | |
5138fde0 | 1961 | .rpc_message = &msg, |
c970aa85 | 1962 | .callback_ops = &nfs4_close_ops, |
101070ca | 1963 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1964 | .flags = RPC_TASK_ASYNC, |
1965 | }; | |
9512135d | 1966 | int status = -ENOMEM; |
1da177e4 | 1967 | |
8535b2be | 1968 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 1969 | if (calldata == NULL) |
9512135d | 1970 | goto out; |
4a35bd41 | 1971 | calldata->inode = state->inode; |
1da177e4 | 1972 | calldata->state = state; |
4a35bd41 | 1973 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 1974 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 1975 | /* Serialization for the sequence id */ |
8535b2be | 1976 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
1977 | if (calldata->arg.seqid == NULL) |
1978 | goto out_free_calldata; | |
dc0b027d | 1979 | calldata->arg.fmode = 0; |
a65318bf | 1980 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 1981 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 1982 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 1983 | calldata->res.server = server; |
f6948697 AV |
1984 | path_get(path); |
1985 | calldata->path = *path; | |
9512135d | 1986 | |
5138fde0 TM |
1987 | msg.rpc_argp = &calldata->arg, |
1988 | msg.rpc_resp = &calldata->res, | |
c970aa85 TM |
1989 | task_setup_data.callback_data = calldata; |
1990 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
1991 | if (IS_ERR(task)) |
1992 | return PTR_ERR(task); | |
a49c3c77 TM |
1993 | status = 0; |
1994 | if (wait) | |
1995 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 1996 | rpc_put_task(task); |
a49c3c77 | 1997 | return status; |
9512135d TM |
1998 | out_free_calldata: |
1999 | kfree(calldata); | |
2000 | out: | |
b39e625b TM |
2001 | nfs4_put_open_state(state); |
2002 | nfs4_put_state_owner(sp); | |
9512135d | 2003 | return status; |
1da177e4 LT |
2004 | } |
2005 | ||
2b484297 | 2006 | static struct inode * |
cd9a1c0e | 2007 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2008 | { |
1da177e4 | 2009 | struct nfs4_state *state; |
1da177e4 | 2010 | |
565277f6 | 2011 | /* Protect against concurrent sillydeletes */ |
cd9a1c0e | 2012 | state = nfs4_do_open(dir, &ctx->path, ctx->mode, open_flags, attr, ctx->cred); |
f46e0bd3 TM |
2013 | if (IS_ERR(state)) |
2014 | return ERR_CAST(state); | |
cd9a1c0e | 2015 | ctx->state = state; |
f46e0bd3 | 2016 | return igrab(state->inode); |
1da177e4 LT |
2017 | } |
2018 | ||
1185a552 | 2019 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2020 | { |
2021 | if (ctx->state == NULL) | |
2022 | return; | |
2023 | if (is_sync) | |
2024 | nfs4_close_sync(&ctx->path, ctx->state, ctx->mode); | |
2025 | else | |
2026 | nfs4_close_state(&ctx->path, ctx->state, ctx->mode); | |
2027 | } | |
1da177e4 LT |
2028 | |
2029 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2030 | { | |
43652ad5 BH |
2031 | struct nfs4_server_caps_arg args = { |
2032 | .fhandle = fhandle, | |
2033 | }; | |
1da177e4 LT |
2034 | struct nfs4_server_caps_res res = {}; |
2035 | struct rpc_message msg = { | |
2036 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2037 | .rpc_argp = &args, |
1da177e4 LT |
2038 | .rpc_resp = &res, |
2039 | }; | |
2040 | int status; | |
2041 | ||
cccef3b9 | 2042 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2043 | if (status == 0) { |
2044 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2045 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2046 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2047 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2048 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2049 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2050 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2051 | server->caps |= NFS_CAP_ACLS; | |
2052 | if (res.has_links != 0) | |
2053 | server->caps |= NFS_CAP_HARDLINKS; | |
2054 | if (res.has_symlinks != 0) | |
2055 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2056 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2057 | server->caps |= NFS_CAP_FILEID; | |
2058 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2059 | server->caps |= NFS_CAP_MODE; | |
2060 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2061 | server->caps |= NFS_CAP_NLINK; | |
2062 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2063 | server->caps |= NFS_CAP_OWNER; | |
2064 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2065 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2066 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2067 | server->caps |= NFS_CAP_ATIME; | |
2068 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2069 | server->caps |= NFS_CAP_CTIME; | |
2070 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2071 | server->caps |= NFS_CAP_MTIME; | |
2072 | ||
a65318bf TM |
2073 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2074 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2075 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 LT |
2076 | server->acl_bitmask = res.acl_bitmask; |
2077 | } | |
cccef3b9 | 2078 | |
1da177e4 LT |
2079 | return status; |
2080 | } | |
2081 | ||
55a97593 | 2082 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2083 | { |
2084 | struct nfs4_exception exception = { }; | |
2085 | int err; | |
2086 | do { | |
2087 | err = nfs4_handle_exception(server, | |
2088 | _nfs4_server_capabilities(server, fhandle), | |
2089 | &exception); | |
2090 | } while (exception.retry); | |
2091 | return err; | |
2092 | } | |
2093 | ||
2094 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2095 | struct nfs_fsinfo *info) | |
2096 | { | |
1da177e4 LT |
2097 | struct nfs4_lookup_root_arg args = { |
2098 | .bitmask = nfs4_fattr_bitmap, | |
2099 | }; | |
2100 | struct nfs4_lookup_res res = { | |
2101 | .server = server, | |
0e574af1 | 2102 | .fattr = info->fattr, |
1da177e4 LT |
2103 | .fh = fhandle, |
2104 | }; | |
2105 | struct rpc_message msg = { | |
2106 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2107 | .rpc_argp = &args, | |
2108 | .rpc_resp = &res, | |
2109 | }; | |
008f55d0 | 2110 | |
0e574af1 | 2111 | nfs_fattr_init(info->fattr); |
fccba804 | 2112 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2113 | } |
2114 | ||
2115 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2116 | struct nfs_fsinfo *info) | |
2117 | { | |
2118 | struct nfs4_exception exception = { }; | |
2119 | int err; | |
2120 | do { | |
2121 | err = nfs4_handle_exception(server, | |
2122 | _nfs4_lookup_root(server, fhandle, info), | |
2123 | &exception); | |
2124 | } while (exception.retry); | |
2125 | return err; | |
2126 | } | |
2127 | ||
54ceac45 DH |
2128 | /* |
2129 | * get the file handle for the "/" directory on the server | |
2130 | */ | |
1da177e4 | 2131 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2132 | struct nfs_fsinfo *info) |
1da177e4 | 2133 | { |
1da177e4 LT |
2134 | int status; |
2135 | ||
1da177e4 | 2136 | status = nfs4_lookup_root(server, fhandle, info); |
1da177e4 LT |
2137 | if (status == 0) |
2138 | status = nfs4_server_capabilities(server, fhandle); | |
2139 | if (status == 0) | |
2140 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2141 | return nfs4_map_errors(status); |
1da177e4 LT |
2142 | } |
2143 | ||
6b97fd3d MN |
2144 | /* |
2145 | * Get locations and (maybe) other attributes of a referral. | |
2146 | * Note that we'll actually follow the referral later when | |
2147 | * we detect fsid mismatch in inode revalidation | |
2148 | */ | |
56659e99 | 2149 | static int nfs4_get_referral(struct inode *dir, const struct qstr *name, struct nfs_fattr *fattr, struct nfs_fh *fhandle) |
6b97fd3d MN |
2150 | { |
2151 | int status = -ENOMEM; | |
2152 | struct page *page = NULL; | |
2153 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2154 | |
2155 | page = alloc_page(GFP_KERNEL); | |
2156 | if (page == NULL) | |
2157 | goto out; | |
2158 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2159 | if (locations == NULL) | |
2160 | goto out; | |
2161 | ||
c228fd3a | 2162 | status = nfs4_proc_fs_locations(dir, name, locations, page); |
6b97fd3d MN |
2163 | if (status != 0) |
2164 | goto out; | |
2165 | /* Make sure server returned a different fsid for the referral */ | |
2166 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
3110ff80 | 2167 | dprintk("%s: server did not return a different fsid for a referral at %s\n", __func__, name->name); |
6b97fd3d MN |
2168 | status = -EIO; |
2169 | goto out; | |
2170 | } | |
2171 | ||
2172 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); | |
2173 | fattr->valid |= NFS_ATTR_FATTR_V4_REFERRAL; | |
2174 | if (!fattr->mode) | |
2175 | fattr->mode = S_IFDIR; | |
2176 | memset(fhandle, 0, sizeof(struct nfs_fh)); | |
2177 | out: | |
2178 | if (page) | |
2179 | __free_page(page); | |
5d7ca35a | 2180 | kfree(locations); |
6b97fd3d MN |
2181 | return status; |
2182 | } | |
2183 | ||
1da177e4 LT |
2184 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2185 | { | |
2186 | struct nfs4_getattr_arg args = { | |
2187 | .fh = fhandle, | |
2188 | .bitmask = server->attr_bitmask, | |
2189 | }; | |
2190 | struct nfs4_getattr_res res = { | |
2191 | .fattr = fattr, | |
2192 | .server = server, | |
2193 | }; | |
2194 | struct rpc_message msg = { | |
2195 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2196 | .rpc_argp = &args, | |
2197 | .rpc_resp = &res, | |
2198 | }; | |
2199 | ||
0e574af1 | 2200 | nfs_fattr_init(fattr); |
cccef3b9 | 2201 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2202 | } |
2203 | ||
2204 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2205 | { | |
2206 | struct nfs4_exception exception = { }; | |
2207 | int err; | |
2208 | do { | |
2209 | err = nfs4_handle_exception(server, | |
2210 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2211 | &exception); | |
2212 | } while (exception.retry); | |
2213 | return err; | |
2214 | } | |
2215 | ||
2216 | /* | |
2217 | * The file is not closed if it is opened due to the a request to change | |
2218 | * the size of the file. The open call will not be needed once the | |
2219 | * VFS layer lookup-intents are implemented. | |
2220 | * | |
2221 | * Close is called when the inode is destroyed. | |
2222 | * If we haven't opened the file for O_WRONLY, we | |
2223 | * need to in the size_change case to obtain a stateid. | |
2224 | * | |
2225 | * Got race? | |
2226 | * Because OPEN is always done by name in nfsv4, it is | |
2227 | * possible that we opened a different file by the same | |
2228 | * name. We can recognize this race condition, but we | |
2229 | * can't do anything about it besides returning an error. | |
2230 | * | |
2231 | * This will be fixed with VFS changes (lookup-intent). | |
2232 | */ | |
2233 | static int | |
2234 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2235 | struct iattr *sattr) | |
2236 | { | |
08e9eac4 | 2237 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2238 | struct rpc_cred *cred = NULL; |
d530838b | 2239 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2240 | int status; |
2241 | ||
0e574af1 | 2242 | nfs_fattr_init(fattr); |
1da177e4 | 2243 | |
d530838b | 2244 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2245 | if (sattr->ia_valid & ATTR_FILE) { |
2246 | struct nfs_open_context *ctx; | |
2247 | ||
2248 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2249 | if (ctx) { |
2250 | cred = ctx->cred; | |
2251 | state = ctx->state; | |
2252 | } | |
659bfcd6 | 2253 | } |
08e9eac4 | 2254 | |
659bfcd6 | 2255 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2256 | if (status == 0) |
2257 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2258 | return status; |
2259 | } | |
2260 | ||
56659e99 TM |
2261 | static int _nfs4_proc_lookupfh(struct nfs_server *server, const struct nfs_fh *dirfh, |
2262 | const struct qstr *name, struct nfs_fh *fhandle, | |
2b3de441 DH |
2263 | struct nfs_fattr *fattr) |
2264 | { | |
2265 | int status; | |
2266 | struct nfs4_lookup_arg args = { | |
2267 | .bitmask = server->attr_bitmask, | |
2268 | .dir_fh = dirfh, | |
2269 | .name = name, | |
2270 | }; | |
2271 | struct nfs4_lookup_res res = { | |
2272 | .server = server, | |
2273 | .fattr = fattr, | |
2274 | .fh = fhandle, | |
2275 | }; | |
2276 | struct rpc_message msg = { | |
2277 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2278 | .rpc_argp = &args, | |
2279 | .rpc_resp = &res, | |
2280 | }; | |
2281 | ||
2282 | nfs_fattr_init(fattr); | |
2283 | ||
2284 | dprintk("NFS call lookupfh %s\n", name->name); | |
cccef3b9 | 2285 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
2b3de441 | 2286 | dprintk("NFS reply lookupfh: %d\n", status); |
2b3de441 DH |
2287 | return status; |
2288 | } | |
2289 | ||
2290 | static int nfs4_proc_lookupfh(struct nfs_server *server, struct nfs_fh *dirfh, | |
2291 | struct qstr *name, struct nfs_fh *fhandle, | |
2292 | struct nfs_fattr *fattr) | |
2293 | { | |
2294 | struct nfs4_exception exception = { }; | |
2295 | int err; | |
2296 | do { | |
4e56e082 TM |
2297 | err = _nfs4_proc_lookupfh(server, dirfh, name, fhandle, fattr); |
2298 | /* FIXME: !!!! */ | |
2299 | if (err == -NFS4ERR_MOVED) { | |
2300 | err = -EREMOTE; | |
2301 | break; | |
2302 | } | |
2303 | err = nfs4_handle_exception(server, err, &exception); | |
2b3de441 DH |
2304 | } while (exception.retry); |
2305 | return err; | |
2306 | } | |
2307 | ||
56659e99 | 2308 | static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, |
1da177e4 LT |
2309 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2310 | { | |
4e56e082 | 2311 | int status; |
1da177e4 LT |
2312 | |
2313 | dprintk("NFS call lookup %s\n", name->name); | |
4e56e082 | 2314 | status = _nfs4_proc_lookupfh(NFS_SERVER(dir), NFS_FH(dir), name, fhandle, fattr); |
6b97fd3d MN |
2315 | if (status == -NFS4ERR_MOVED) |
2316 | status = nfs4_get_referral(dir, name, fattr, fhandle); | |
1da177e4 LT |
2317 | dprintk("NFS reply lookup: %d\n", status); |
2318 | return status; | |
2319 | } | |
2320 | ||
2321 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2322 | { | |
2323 | struct nfs4_exception exception = { }; | |
2324 | int err; | |
2325 | do { | |
2326 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2327 | _nfs4_proc_lookup(dir, name, fhandle, fattr), | |
2328 | &exception); | |
2329 | } while (exception.retry); | |
2330 | return err; | |
2331 | } | |
2332 | ||
2333 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2334 | { | |
76b32999 | 2335 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2336 | struct nfs4_accessargs args = { |
2337 | .fh = NFS_FH(inode), | |
76b32999 TM |
2338 | .bitmask = server->attr_bitmask, |
2339 | }; | |
2340 | struct nfs4_accessres res = { | |
2341 | .server = server, | |
1da177e4 | 2342 | }; |
1da177e4 LT |
2343 | struct rpc_message msg = { |
2344 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2345 | .rpc_argp = &args, | |
2346 | .rpc_resp = &res, | |
2347 | .rpc_cred = entry->cred, | |
2348 | }; | |
2349 | int mode = entry->mask; | |
2350 | int status; | |
2351 | ||
2352 | /* | |
2353 | * Determine which access bits we want to ask for... | |
2354 | */ | |
2355 | if (mode & MAY_READ) | |
2356 | args.access |= NFS4_ACCESS_READ; | |
2357 | if (S_ISDIR(inode->i_mode)) { | |
2358 | if (mode & MAY_WRITE) | |
2359 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2360 | if (mode & MAY_EXEC) | |
2361 | args.access |= NFS4_ACCESS_LOOKUP; | |
2362 | } else { | |
2363 | if (mode & MAY_WRITE) | |
2364 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2365 | if (mode & MAY_EXEC) | |
2366 | args.access |= NFS4_ACCESS_EXECUTE; | |
2367 | } | |
c407d41a TM |
2368 | |
2369 | res.fattr = nfs_alloc_fattr(); | |
2370 | if (res.fattr == NULL) | |
2371 | return -ENOMEM; | |
2372 | ||
cccef3b9 | 2373 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2374 | if (!status) { |
2375 | entry->mask = 0; | |
2376 | if (res.access & NFS4_ACCESS_READ) | |
2377 | entry->mask |= MAY_READ; | |
2378 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
2379 | entry->mask |= MAY_WRITE; | |
2380 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
2381 | entry->mask |= MAY_EXEC; | |
c407d41a | 2382 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2383 | } |
c407d41a | 2384 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2385 | return status; |
2386 | } | |
2387 | ||
2388 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2389 | { | |
2390 | struct nfs4_exception exception = { }; | |
2391 | int err; | |
2392 | do { | |
2393 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2394 | _nfs4_proc_access(inode, entry), | |
2395 | &exception); | |
2396 | } while (exception.retry); | |
2397 | return err; | |
2398 | } | |
2399 | ||
2400 | /* | |
2401 | * TODO: For the time being, we don't try to get any attributes | |
2402 | * along with any of the zero-copy operations READ, READDIR, | |
2403 | * READLINK, WRITE. | |
2404 | * | |
2405 | * In the case of the first three, we want to put the GETATTR | |
2406 | * after the read-type operation -- this is because it is hard | |
2407 | * to predict the length of a GETATTR response in v4, and thus | |
2408 | * align the READ data correctly. This means that the GETATTR | |
2409 | * may end up partially falling into the page cache, and we should | |
2410 | * shift it into the 'tail' of the xdr_buf before processing. | |
2411 | * To do this efficiently, we need to know the total length | |
2412 | * of data received, which doesn't seem to be available outside | |
2413 | * of the RPC layer. | |
2414 | * | |
2415 | * In the case of WRITE, we also want to put the GETATTR after | |
2416 | * the operation -- in this case because we want to make sure | |
2417 | * we get the post-operation mtime and size. This means that | |
2418 | * we can't use xdr_encode_pages() as written: we need a variant | |
2419 | * of it which would leave room in the 'tail' iovec. | |
2420 | * | |
2421 | * Both of these changes to the XDR layer would in fact be quite | |
2422 | * minor, but I decided to leave them for a subsequent patch. | |
2423 | */ | |
2424 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2425 | unsigned int pgbase, unsigned int pglen) | |
2426 | { | |
2427 | struct nfs4_readlink args = { | |
2428 | .fh = NFS_FH(inode), | |
2429 | .pgbase = pgbase, | |
2430 | .pglen = pglen, | |
2431 | .pages = &page, | |
2432 | }; | |
f50c7000 | 2433 | struct nfs4_readlink_res res; |
1da177e4 LT |
2434 | struct rpc_message msg = { |
2435 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2436 | .rpc_argp = &args, | |
f50c7000 | 2437 | .rpc_resp = &res, |
1da177e4 LT |
2438 | }; |
2439 | ||
cccef3b9 | 2440 | return nfs4_call_sync(NFS_SERVER(inode), &msg, &args, &res, 0); |
1da177e4 LT |
2441 | } |
2442 | ||
2443 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2444 | unsigned int pgbase, unsigned int pglen) | |
2445 | { | |
2446 | struct nfs4_exception exception = { }; | |
2447 | int err; | |
2448 | do { | |
2449 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2450 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2451 | &exception); | |
2452 | } while (exception.retry); | |
2453 | return err; | |
2454 | } | |
2455 | ||
1da177e4 LT |
2456 | /* |
2457 | * Got race? | |
2458 | * We will need to arrange for the VFS layer to provide an atomic open. | |
2459 | * Until then, this create/open method is prone to inefficiency and race | |
2460 | * conditions due to the lookup, create, and open VFS calls from sys_open() | |
2461 | * placed on the wire. | |
2462 | * | |
2463 | * Given the above sorry state of affairs, I'm simply sending an OPEN. | |
2464 | * The file will be opened again in the subsequent VFS open call | |
2465 | * (nfs4_proc_file_open). | |
2466 | * | |
2467 | * The open for read will just hang around to be used by any process that | |
2468 | * opens the file O_RDONLY. This will all be resolved with the VFS changes. | |
2469 | */ | |
2470 | ||
2471 | static int | |
2472 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
c0204fd2 | 2473 | int flags, struct nfs_open_context *ctx) |
1da177e4 | 2474 | { |
c0204fd2 | 2475 | struct path my_path = { |
ad389da7 TM |
2476 | .dentry = dentry, |
2477 | }; | |
c0204fd2 | 2478 | struct path *path = &my_path; |
1da177e4 | 2479 | struct nfs4_state *state; |
c0204fd2 TM |
2480 | struct rpc_cred *cred = NULL; |
2481 | fmode_t fmode = 0; | |
1da177e4 LT |
2482 | int status = 0; |
2483 | ||
c0204fd2 TM |
2484 | if (ctx != NULL) { |
2485 | cred = ctx->cred; | |
2486 | path = &ctx->path; | |
2487 | fmode = ctx->mode; | |
1da177e4 | 2488 | } |
c0204fd2 | 2489 | state = nfs4_do_open(dir, path, fmode, flags, sattr, cred); |
d4d9cdcb | 2490 | d_drop(dentry); |
1da177e4 LT |
2491 | if (IS_ERR(state)) { |
2492 | status = PTR_ERR(state); | |
c0204fd2 | 2493 | goto out; |
1da177e4 | 2494 | } |
d4d9cdcb | 2495 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2496 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
c0204fd2 TM |
2497 | if (ctx != NULL) |
2498 | ctx->state = state; | |
02a913a7 | 2499 | else |
c0204fd2 | 2500 | nfs4_close_sync(path, state, fmode); |
1da177e4 LT |
2501 | out: |
2502 | return status; | |
2503 | } | |
2504 | ||
2505 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2506 | { | |
16e42959 | 2507 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2508 | struct nfs_removeargs args = { |
1da177e4 | 2509 | .fh = NFS_FH(dir), |
4fdc17b2 TM |
2510 | .name.len = name->len, |
2511 | .name.name = name->name, | |
16e42959 TM |
2512 | .bitmask = server->attr_bitmask, |
2513 | }; | |
4fdc17b2 | 2514 | struct nfs_removeres res = { |
16e42959 | 2515 | .server = server, |
1da177e4 | 2516 | }; |
1da177e4 | 2517 | struct rpc_message msg = { |
4fdc17b2 TM |
2518 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2519 | .rpc_argp = &args, | |
2520 | .rpc_resp = &res, | |
1da177e4 | 2521 | }; |
d346890b TM |
2522 | int status = -ENOMEM; |
2523 | ||
2524 | res.dir_attr = nfs_alloc_fattr(); | |
2525 | if (res.dir_attr == NULL) | |
2526 | goto out; | |
1da177e4 | 2527 | |
cccef3b9 | 2528 | status = nfs4_call_sync(server, &msg, &args, &res, 1); |
16e42959 TM |
2529 | if (status == 0) { |
2530 | update_changeattr(dir, &res.cinfo); | |
d346890b | 2531 | nfs_post_op_update_inode(dir, res.dir_attr); |
16e42959 | 2532 | } |
d346890b TM |
2533 | nfs_free_fattr(res.dir_attr); |
2534 | out: | |
1da177e4 LT |
2535 | return status; |
2536 | } | |
2537 | ||
2538 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2539 | { | |
2540 | struct nfs4_exception exception = { }; | |
2541 | int err; | |
2542 | do { | |
2543 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2544 | _nfs4_proc_remove(dir, name), | |
2545 | &exception); | |
2546 | } while (exception.retry); | |
2547 | return err; | |
2548 | } | |
2549 | ||
e4eff1a6 | 2550 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2551 | { |
e4eff1a6 TM |
2552 | struct nfs_server *server = NFS_SERVER(dir); |
2553 | struct nfs_removeargs *args = msg->rpc_argp; | |
2554 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2555 | |
a65318bf | 2556 | args->bitmask = server->cache_consistency_bitmask; |
e4eff1a6 | 2557 | res->server = server; |
dfb4f309 | 2558 | res->seq_res.sr_slot = NULL; |
1da177e4 | 2559 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
1da177e4 LT |
2560 | } |
2561 | ||
e4eff1a6 | 2562 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2563 | { |
e4eff1a6 TM |
2564 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2565 | ||
14516c3a TM |
2566 | if (!nfs4_sequence_done(task, &res->seq_res)) |
2567 | return 0; | |
9e33bed5 | 2568 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
2569 | return 0; |
2570 | update_changeattr(dir, &res->cinfo); | |
d346890b | 2571 | nfs_post_op_update_inode(dir, res->dir_attr); |
e4eff1a6 | 2572 | return 1; |
1da177e4 LT |
2573 | } |
2574 | ||
d3d4152a JL |
2575 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
2576 | { | |
2577 | struct nfs_server *server = NFS_SERVER(dir); | |
2578 | struct nfs_renameargs *arg = msg->rpc_argp; | |
2579 | struct nfs_renameres *res = msg->rpc_resp; | |
2580 | ||
2581 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
2582 | arg->bitmask = server->attr_bitmask; | |
2583 | res->server = server; | |
2584 | } | |
2585 | ||
2586 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
2587 | struct inode *new_dir) | |
2588 | { | |
2589 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
2590 | ||
2591 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
2592 | return 0; | |
2593 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
2594 | return 0; | |
2595 | ||
2596 | update_changeattr(old_dir, &res->old_cinfo); | |
2597 | nfs_post_op_update_inode(old_dir, res->old_fattr); | |
2598 | update_changeattr(new_dir, &res->new_cinfo); | |
2599 | nfs_post_op_update_inode(new_dir, res->new_fattr); | |
2600 | return 1; | |
2601 | } | |
2602 | ||
1da177e4 LT |
2603 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
2604 | struct inode *new_dir, struct qstr *new_name) | |
2605 | { | |
6caf2c82 | 2606 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 2607 | struct nfs_renameargs arg = { |
1da177e4 LT |
2608 | .old_dir = NFS_FH(old_dir), |
2609 | .new_dir = NFS_FH(new_dir), | |
2610 | .old_name = old_name, | |
2611 | .new_name = new_name, | |
6caf2c82 TM |
2612 | .bitmask = server->attr_bitmask, |
2613 | }; | |
e8582a8b | 2614 | struct nfs_renameres res = { |
6caf2c82 | 2615 | .server = server, |
1da177e4 | 2616 | }; |
1da177e4 LT |
2617 | struct rpc_message msg = { |
2618 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2619 | .rpc_argp = &arg, | |
2620 | .rpc_resp = &res, | |
2621 | }; | |
011fff72 | 2622 | int status = -ENOMEM; |
1da177e4 | 2623 | |
011fff72 TM |
2624 | res.old_fattr = nfs_alloc_fattr(); |
2625 | res.new_fattr = nfs_alloc_fattr(); | |
2626 | if (res.old_fattr == NULL || res.new_fattr == NULL) | |
2627 | goto out; | |
1da177e4 | 2628 | |
011fff72 | 2629 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
1da177e4 LT |
2630 | if (!status) { |
2631 | update_changeattr(old_dir, &res.old_cinfo); | |
6caf2c82 | 2632 | nfs_post_op_update_inode(old_dir, res.old_fattr); |
1da177e4 | 2633 | update_changeattr(new_dir, &res.new_cinfo); |
6caf2c82 | 2634 | nfs_post_op_update_inode(new_dir, res.new_fattr); |
1da177e4 | 2635 | } |
011fff72 TM |
2636 | out: |
2637 | nfs_free_fattr(res.new_fattr); | |
2638 | nfs_free_fattr(res.old_fattr); | |
1da177e4 LT |
2639 | return status; |
2640 | } | |
2641 | ||
2642 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2643 | struct inode *new_dir, struct qstr *new_name) | |
2644 | { | |
2645 | struct nfs4_exception exception = { }; | |
2646 | int err; | |
2647 | do { | |
2648 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2649 | _nfs4_proc_rename(old_dir, old_name, | |
2650 | new_dir, new_name), | |
2651 | &exception); | |
2652 | } while (exception.retry); | |
2653 | return err; | |
2654 | } | |
2655 | ||
2656 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2657 | { | |
91ba2eee | 2658 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2659 | struct nfs4_link_arg arg = { |
2660 | .fh = NFS_FH(inode), | |
2661 | .dir_fh = NFS_FH(dir), | |
2662 | .name = name, | |
91ba2eee TM |
2663 | .bitmask = server->attr_bitmask, |
2664 | }; | |
91ba2eee TM |
2665 | struct nfs4_link_res res = { |
2666 | .server = server, | |
1da177e4 | 2667 | }; |
1da177e4 LT |
2668 | struct rpc_message msg = { |
2669 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
2670 | .rpc_argp = &arg, | |
91ba2eee | 2671 | .rpc_resp = &res, |
1da177e4 | 2672 | }; |
136f2627 TM |
2673 | int status = -ENOMEM; |
2674 | ||
2675 | res.fattr = nfs_alloc_fattr(); | |
2676 | res.dir_attr = nfs_alloc_fattr(); | |
2677 | if (res.fattr == NULL || res.dir_attr == NULL) | |
2678 | goto out; | |
1da177e4 | 2679 | |
cccef3b9 | 2680 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
91ba2eee TM |
2681 | if (!status) { |
2682 | update_changeattr(dir, &res.cinfo); | |
2683 | nfs_post_op_update_inode(dir, res.dir_attr); | |
73a3d07c | 2684 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 2685 | } |
136f2627 TM |
2686 | out: |
2687 | nfs_free_fattr(res.dir_attr); | |
2688 | nfs_free_fattr(res.fattr); | |
1da177e4 LT |
2689 | return status; |
2690 | } | |
2691 | ||
2692 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2693 | { | |
2694 | struct nfs4_exception exception = { }; | |
2695 | int err; | |
2696 | do { | |
2697 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2698 | _nfs4_proc_link(inode, dir, name), | |
2699 | &exception); | |
2700 | } while (exception.retry); | |
2701 | return err; | |
2702 | } | |
2703 | ||
57dc9a57 TM |
2704 | struct nfs4_createdata { |
2705 | struct rpc_message msg; | |
2706 | struct nfs4_create_arg arg; | |
2707 | struct nfs4_create_res res; | |
2708 | struct nfs_fh fh; | |
2709 | struct nfs_fattr fattr; | |
2710 | struct nfs_fattr dir_fattr; | |
2711 | }; | |
2712 | ||
2713 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
2714 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
2715 | { | |
2716 | struct nfs4_createdata *data; | |
2717 | ||
2718 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
2719 | if (data != NULL) { | |
2720 | struct nfs_server *server = NFS_SERVER(dir); | |
2721 | ||
2722 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
2723 | data->msg.rpc_argp = &data->arg; | |
2724 | data->msg.rpc_resp = &data->res; | |
2725 | data->arg.dir_fh = NFS_FH(dir); | |
2726 | data->arg.server = server; | |
2727 | data->arg.name = name; | |
2728 | data->arg.attrs = sattr; | |
2729 | data->arg.ftype = ftype; | |
2730 | data->arg.bitmask = server->attr_bitmask; | |
2731 | data->res.server = server; | |
2732 | data->res.fh = &data->fh; | |
2733 | data->res.fattr = &data->fattr; | |
2734 | data->res.dir_fattr = &data->dir_fattr; | |
2735 | nfs_fattr_init(data->res.fattr); | |
2736 | nfs_fattr_init(data->res.dir_fattr); | |
2737 | } | |
2738 | return data; | |
2739 | } | |
2740 | ||
2741 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
2742 | { | |
cccef3b9 AA |
2743 | int status = nfs4_call_sync(NFS_SERVER(dir), &data->msg, |
2744 | &data->arg, &data->res, 1); | |
57dc9a57 TM |
2745 | if (status == 0) { |
2746 | update_changeattr(dir, &data->res.dir_cinfo); | |
2747 | nfs_post_op_update_inode(dir, data->res.dir_fattr); | |
2748 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); | |
2749 | } | |
2750 | return status; | |
2751 | } | |
2752 | ||
2753 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
2754 | { | |
2755 | kfree(data); | |
2756 | } | |
2757 | ||
4f390c15 | 2758 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2759 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 2760 | { |
57dc9a57 TM |
2761 | struct nfs4_createdata *data; |
2762 | int status = -ENAMETOOLONG; | |
1da177e4 | 2763 | |
94a6d753 | 2764 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 2765 | goto out; |
4f390c15 | 2766 | |
57dc9a57 TM |
2767 | status = -ENOMEM; |
2768 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
2769 | if (data == NULL) | |
2770 | goto out; | |
2771 | ||
2772 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
2773 | data->arg.u.symlink.pages = &page; | |
2774 | data->arg.u.symlink.len = len; | |
1da177e4 | 2775 | |
57dc9a57 TM |
2776 | status = nfs4_do_create(dir, dentry, data); |
2777 | ||
2778 | nfs4_free_createdata(data); | |
2779 | out: | |
1da177e4 LT |
2780 | return status; |
2781 | } | |
2782 | ||
4f390c15 | 2783 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2784 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
2785 | { |
2786 | struct nfs4_exception exception = { }; | |
2787 | int err; | |
2788 | do { | |
2789 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
2790 | _nfs4_proc_symlink(dir, dentry, page, |
2791 | len, sattr), | |
1da177e4 LT |
2792 | &exception); |
2793 | } while (exception.retry); | |
2794 | return err; | |
2795 | } | |
2796 | ||
2797 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2798 | struct iattr *sattr) | |
2799 | { | |
57dc9a57 TM |
2800 | struct nfs4_createdata *data; |
2801 | int status = -ENOMEM; | |
1da177e4 | 2802 | |
57dc9a57 TM |
2803 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
2804 | if (data == NULL) | |
2805 | goto out; | |
2806 | ||
2807 | status = nfs4_do_create(dir, dentry, data); | |
2808 | ||
2809 | nfs4_free_createdata(data); | |
2810 | out: | |
1da177e4 LT |
2811 | return status; |
2812 | } | |
2813 | ||
2814 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2815 | struct iattr *sattr) | |
2816 | { | |
2817 | struct nfs4_exception exception = { }; | |
2818 | int err; | |
2819 | do { | |
2820 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2821 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
2822 | &exception); | |
2823 | } while (exception.retry); | |
2824 | return err; | |
2825 | } | |
2826 | ||
2827 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 2828 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
2829 | { |
2830 | struct inode *dir = dentry->d_inode; | |
2831 | struct nfs4_readdir_arg args = { | |
2832 | .fh = NFS_FH(dir), | |
56e4ebf8 | 2833 | .pages = pages, |
1da177e4 LT |
2834 | .pgbase = 0, |
2835 | .count = count, | |
96d25e53 | 2836 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 2837 | .plus = plus, |
1da177e4 LT |
2838 | }; |
2839 | struct nfs4_readdir_res res; | |
2840 | struct rpc_message msg = { | |
2841 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
2842 | .rpc_argp = &args, | |
2843 | .rpc_resp = &res, | |
2844 | .rpc_cred = cred, | |
2845 | }; | |
2846 | int status; | |
2847 | ||
3110ff80 | 2848 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
2849 | dentry->d_parent->d_name.name, |
2850 | dentry->d_name.name, | |
2851 | (unsigned long long)cookie); | |
1da177e4 LT |
2852 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
2853 | res.pgbase = args.pgbase; | |
cccef3b9 | 2854 | status = nfs4_call_sync(NFS_SERVER(dir), &msg, &args, &res, 0); |
ac396128 | 2855 | if (status >= 0) { |
1da177e4 | 2856 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
2857 | status += args.pgbase; |
2858 | } | |
c4812998 TM |
2859 | |
2860 | nfs_invalidate_atime(dir); | |
2861 | ||
3110ff80 | 2862 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
2863 | return status; |
2864 | } | |
2865 | ||
2866 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 2867 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
2868 | { |
2869 | struct nfs4_exception exception = { }; | |
2870 | int err; | |
2871 | do { | |
2872 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
2873 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 2874 | pages, count, plus), |
1da177e4 LT |
2875 | &exception); |
2876 | } while (exception.retry); | |
2877 | return err; | |
2878 | } | |
2879 | ||
2880 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2881 | struct iattr *sattr, dev_t rdev) | |
2882 | { | |
57dc9a57 TM |
2883 | struct nfs4_createdata *data; |
2884 | int mode = sattr->ia_mode; | |
2885 | int status = -ENOMEM; | |
1da177e4 LT |
2886 | |
2887 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
2888 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
57dc9a57 TM |
2889 | |
2890 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); | |
2891 | if (data == NULL) | |
2892 | goto out; | |
2893 | ||
1da177e4 | 2894 | if (S_ISFIFO(mode)) |
57dc9a57 | 2895 | data->arg.ftype = NF4FIFO; |
1da177e4 | 2896 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
2897 | data->arg.ftype = NF4BLK; |
2898 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
2899 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
2900 | } |
2901 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
2902 | data->arg.ftype = NF4CHR; |
2903 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
2904 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 | 2905 | } |
1da177e4 | 2906 | |
57dc9a57 TM |
2907 | status = nfs4_do_create(dir, dentry, data); |
2908 | ||
2909 | nfs4_free_createdata(data); | |
2910 | out: | |
1da177e4 LT |
2911 | return status; |
2912 | } | |
2913 | ||
2914 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2915 | struct iattr *sattr, dev_t rdev) | |
2916 | { | |
2917 | struct nfs4_exception exception = { }; | |
2918 | int err; | |
2919 | do { | |
2920 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2921 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
2922 | &exception); | |
2923 | } while (exception.retry); | |
2924 | return err; | |
2925 | } | |
2926 | ||
2927 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
2928 | struct nfs_fsstat *fsstat) | |
2929 | { | |
2930 | struct nfs4_statfs_arg args = { | |
2931 | .fh = fhandle, | |
2932 | .bitmask = server->attr_bitmask, | |
2933 | }; | |
24ad148a BH |
2934 | struct nfs4_statfs_res res = { |
2935 | .fsstat = fsstat, | |
2936 | }; | |
1da177e4 LT |
2937 | struct rpc_message msg = { |
2938 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
2939 | .rpc_argp = &args, | |
24ad148a | 2940 | .rpc_resp = &res, |
1da177e4 LT |
2941 | }; |
2942 | ||
0e574af1 | 2943 | nfs_fattr_init(fsstat->fattr); |
cccef3b9 | 2944 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2945 | } |
2946 | ||
2947 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
2948 | { | |
2949 | struct nfs4_exception exception = { }; | |
2950 | int err; | |
2951 | do { | |
2952 | err = nfs4_handle_exception(server, | |
2953 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
2954 | &exception); | |
2955 | } while (exception.retry); | |
2956 | return err; | |
2957 | } | |
2958 | ||
2959 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
2960 | struct nfs_fsinfo *fsinfo) | |
2961 | { | |
2962 | struct nfs4_fsinfo_arg args = { | |
2963 | .fh = fhandle, | |
2964 | .bitmask = server->attr_bitmask, | |
2965 | }; | |
3dda5e43 BH |
2966 | struct nfs4_fsinfo_res res = { |
2967 | .fsinfo = fsinfo, | |
2968 | }; | |
1da177e4 LT |
2969 | struct rpc_message msg = { |
2970 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
2971 | .rpc_argp = &args, | |
3dda5e43 | 2972 | .rpc_resp = &res, |
1da177e4 LT |
2973 | }; |
2974 | ||
cccef3b9 | 2975 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2976 | } |
2977 | ||
2978 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
2979 | { | |
2980 | struct nfs4_exception exception = { }; | |
2981 | int err; | |
2982 | ||
2983 | do { | |
2984 | err = nfs4_handle_exception(server, | |
2985 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
2986 | &exception); | |
2987 | } while (exception.retry); | |
2988 | return err; | |
2989 | } | |
2990 | ||
2991 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
2992 | { | |
0e574af1 | 2993 | nfs_fattr_init(fsinfo->fattr); |
1da177e4 LT |
2994 | return nfs4_do_fsinfo(server, fhandle, fsinfo); |
2995 | } | |
2996 | ||
2997 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
2998 | struct nfs_pathconf *pathconf) | |
2999 | { | |
3000 | struct nfs4_pathconf_arg args = { | |
3001 | .fh = fhandle, | |
3002 | .bitmask = server->attr_bitmask, | |
3003 | }; | |
d45b2989 BH |
3004 | struct nfs4_pathconf_res res = { |
3005 | .pathconf = pathconf, | |
3006 | }; | |
1da177e4 LT |
3007 | struct rpc_message msg = { |
3008 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3009 | .rpc_argp = &args, | |
d45b2989 | 3010 | .rpc_resp = &res, |
1da177e4 LT |
3011 | }; |
3012 | ||
3013 | /* None of the pathconf attributes are mandatory to implement */ | |
3014 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3015 | memset(pathconf, 0, sizeof(*pathconf)); | |
3016 | return 0; | |
3017 | } | |
3018 | ||
0e574af1 | 3019 | nfs_fattr_init(pathconf->fattr); |
cccef3b9 | 3020 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
3021 | } |
3022 | ||
3023 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3024 | struct nfs_pathconf *pathconf) | |
3025 | { | |
3026 | struct nfs4_exception exception = { }; | |
3027 | int err; | |
3028 | ||
3029 | do { | |
3030 | err = nfs4_handle_exception(server, | |
3031 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3032 | &exception); | |
3033 | } while (exception.retry); | |
3034 | return err; | |
3035 | } | |
3036 | ||
ec06c096 | 3037 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3038 | { |
ec06c096 | 3039 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 3040 | |
f11c88af AA |
3041 | dprintk("--> %s\n", __func__); |
3042 | ||
14516c3a TM |
3043 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
3044 | return -EAGAIN; | |
f11c88af | 3045 | |
9e33bed5 | 3046 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
0110ee15 | 3047 | nfs_restart_rpc(task, server->nfs_client); |
ec06c096 | 3048 | return -EAGAIN; |
1da177e4 | 3049 | } |
8850df99 TM |
3050 | |
3051 | nfs_invalidate_atime(data->inode); | |
1da177e4 | 3052 | if (task->tk_status > 0) |
ec06c096 TM |
3053 | renew_lease(server, data->timestamp); |
3054 | return 0; | |
1da177e4 LT |
3055 | } |
3056 | ||
bdc7f021 | 3057 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3058 | { |
1da177e4 | 3059 | data->timestamp = jiffies; |
bdc7f021 | 3060 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
1da177e4 LT |
3061 | } |
3062 | ||
788e7a89 | 3063 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3064 | { |
1da177e4 LT |
3065 | struct inode *inode = data->inode; |
3066 | ||
14516c3a TM |
3067 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
3068 | return -EAGAIN; | |
def6ed7e | 3069 | |
9e33bed5 | 3070 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
0110ee15 | 3071 | nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client); |
788e7a89 | 3072 | return -EAGAIN; |
1da177e4 | 3073 | } |
4f9838c7 | 3074 | if (task->tk_status >= 0) { |
1da177e4 | 3075 | renew_lease(NFS_SERVER(inode), data->timestamp); |
70ca8852 | 3076 | nfs_post_op_update_inode_force_wcc(inode, data->res.fattr); |
4f9838c7 | 3077 | } |
788e7a89 | 3078 | return 0; |
1da177e4 LT |
3079 | } |
3080 | ||
bdc7f021 | 3081 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3082 | { |
bdc7f021 TM |
3083 | struct nfs_server *server = NFS_SERVER(data->inode); |
3084 | ||
a65318bf | 3085 | data->args.bitmask = server->cache_consistency_bitmask; |
4f9838c7 | 3086 | data->res.server = server; |
1da177e4 LT |
3087 | data->timestamp = jiffies; |
3088 | ||
bdc7f021 | 3089 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
1da177e4 LT |
3090 | } |
3091 | ||
788e7a89 | 3092 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3093 | { |
1da177e4 LT |
3094 | struct inode *inode = data->inode; |
3095 | ||
14516c3a TM |
3096 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
3097 | return -EAGAIN; | |
3098 | ||
9e33bed5 | 3099 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
0110ee15 | 3100 | nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client); |
788e7a89 | 3101 | return -EAGAIN; |
1da177e4 | 3102 | } |
9e08a3c5 | 3103 | nfs_refresh_inode(inode, data->res.fattr); |
788e7a89 | 3104 | return 0; |
1da177e4 LT |
3105 | } |
3106 | ||
bdc7f021 | 3107 | static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3108 | { |
788e7a89 | 3109 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 3110 | |
a65318bf | 3111 | data->args.bitmask = server->cache_consistency_bitmask; |
4f9838c7 | 3112 | data->res.server = server; |
bdc7f021 | 3113 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
1da177e4 LT |
3114 | } |
3115 | ||
9bc4e3ca CL |
3116 | struct nfs4_renewdata { |
3117 | struct nfs_client *client; | |
3118 | unsigned long timestamp; | |
3119 | }; | |
3120 | ||
1da177e4 LT |
3121 | /* |
3122 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3123 | * standalone procedure for queueing an asynchronous RENEW. | |
3124 | */ | |
9bc4e3ca | 3125 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3126 | { |
9bc4e3ca CL |
3127 | struct nfs4_renewdata *data = calldata; |
3128 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3129 | |
0851de06 AB |
3130 | if (atomic_read(&clp->cl_count) > 1) |
3131 | nfs4_schedule_state_renewal(clp); | |
3132 | nfs_put_client(clp); | |
9bc4e3ca | 3133 | kfree(data); |
dc96aef9 AB |
3134 | } |
3135 | ||
9bc4e3ca | 3136 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3137 | { |
9bc4e3ca CL |
3138 | struct nfs4_renewdata *data = calldata; |
3139 | struct nfs_client *clp = data->client; | |
3140 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3141 | |
3142 | if (task->tk_status < 0) { | |
95baa25c TM |
3143 | /* Unless we're shutting down, schedule state recovery! */ |
3144 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) != 0) | |
3145 | nfs4_schedule_state_recovery(clp); | |
1da177e4 LT |
3146 | return; |
3147 | } | |
452e9352 | 3148 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3149 | } |
3150 | ||
963d8fe5 TM |
3151 | static const struct rpc_call_ops nfs4_renew_ops = { |
3152 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3153 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3154 | }; |
3155 | ||
adfa6f98 | 3156 | int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3157 | { |
3158 | struct rpc_message msg = { | |
3159 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3160 | .rpc_argp = clp, | |
b4454fe1 | 3161 | .rpc_cred = cred, |
1da177e4 | 3162 | }; |
9bc4e3ca | 3163 | struct nfs4_renewdata *data; |
1da177e4 | 3164 | |
0851de06 AB |
3165 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3166 | return -EIO; | |
9bc4e3ca CL |
3167 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
3168 | if (data == NULL) | |
3169 | return -ENOMEM; | |
3170 | data->client = clp; | |
3171 | data->timestamp = jiffies; | |
1da177e4 | 3172 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3173 | &nfs4_renew_ops, data); |
1da177e4 LT |
3174 | } |
3175 | ||
adfa6f98 | 3176 | int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3177 | { |
3178 | struct rpc_message msg = { | |
3179 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3180 | .rpc_argp = clp, | |
b4454fe1 | 3181 | .rpc_cred = cred, |
1da177e4 LT |
3182 | }; |
3183 | unsigned long now = jiffies; | |
3184 | int status; | |
3185 | ||
3186 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3187 | if (status < 0) | |
3188 | return status; | |
452e9352 | 3189 | do_renew_lease(clp, now); |
1da177e4 LT |
3190 | return 0; |
3191 | } | |
3192 | ||
aa1870af BF |
3193 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3194 | { | |
3195 | return (server->caps & NFS_CAP_ACLS) | |
3196 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3197 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3198 | } | |
3199 | ||
3200 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
3201 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
3202 | * the stack. | |
3203 | */ | |
3204 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
3205 | ||
3206 | static void buf_to_pages(const void *buf, size_t buflen, | |
3207 | struct page **pages, unsigned int *pgbase) | |
3208 | { | |
3209 | const void *p = buf; | |
3210 | ||
3211 | *pgbase = offset_in_page(buf); | |
3212 | p -= *pgbase; | |
3213 | while (p < buf + buflen) { | |
3214 | *(pages++) = virt_to_page(p); | |
3215 | p += PAGE_CACHE_SIZE; | |
3216 | } | |
3217 | } | |
3218 | ||
e50a1c2e BF |
3219 | struct nfs4_cached_acl { |
3220 | int cached; | |
3221 | size_t len; | |
3e9d4154 | 3222 | char data[0]; |
e50a1c2e BF |
3223 | }; |
3224 | ||
3225 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3226 | { | |
3227 | struct nfs_inode *nfsi = NFS_I(inode); | |
3228 | ||
3229 | spin_lock(&inode->i_lock); | |
3230 | kfree(nfsi->nfs4_acl); | |
3231 | nfsi->nfs4_acl = acl; | |
3232 | spin_unlock(&inode->i_lock); | |
3233 | } | |
3234 | ||
3235 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3236 | { | |
3237 | nfs4_set_cached_acl(inode, NULL); | |
3238 | } | |
3239 | ||
3240 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3241 | { | |
3242 | struct nfs_inode *nfsi = NFS_I(inode); | |
3243 | struct nfs4_cached_acl *acl; | |
3244 | int ret = -ENOENT; | |
3245 | ||
3246 | spin_lock(&inode->i_lock); | |
3247 | acl = nfsi->nfs4_acl; | |
3248 | if (acl == NULL) | |
3249 | goto out; | |
3250 | if (buf == NULL) /* user is just asking for length */ | |
3251 | goto out_len; | |
3252 | if (acl->cached == 0) | |
3253 | goto out; | |
3254 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3255 | if (acl->len > buflen) | |
3256 | goto out; | |
3257 | memcpy(buf, acl->data, acl->len); | |
3258 | out_len: | |
3259 | ret = acl->len; | |
3260 | out: | |
3261 | spin_unlock(&inode->i_lock); | |
3262 | return ret; | |
3263 | } | |
3264 | ||
3265 | static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len) | |
3266 | { | |
3267 | struct nfs4_cached_acl *acl; | |
3268 | ||
3269 | if (buf && acl_len <= PAGE_SIZE) { | |
3270 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); | |
3271 | if (acl == NULL) | |
3272 | goto out; | |
3273 | acl->cached = 1; | |
3274 | memcpy(acl->data, buf, acl_len); | |
3275 | } else { | |
3276 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3277 | if (acl == NULL) | |
3278 | goto out; | |
3279 | acl->cached = 0; | |
3280 | } | |
3281 | acl->len = acl_len; | |
3282 | out: | |
3283 | nfs4_set_cached_acl(inode, acl); | |
3284 | } | |
3285 | ||
16b4289c | 3286 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3287 | { |
aa1870af BF |
3288 | struct page *pages[NFS4ACL_MAXPAGES]; |
3289 | struct nfs_getaclargs args = { | |
3290 | .fh = NFS_FH(inode), | |
3291 | .acl_pages = pages, | |
3292 | .acl_len = buflen, | |
3293 | }; | |
663c79b3 BH |
3294 | struct nfs_getaclres res = { |
3295 | .acl_len = buflen, | |
3296 | }; | |
e50a1c2e | 3297 | void *resp_buf; |
aa1870af BF |
3298 | struct rpc_message msg = { |
3299 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3300 | .rpc_argp = &args, | |
663c79b3 | 3301 | .rpc_resp = &res, |
aa1870af | 3302 | }; |
e50a1c2e | 3303 | struct page *localpage = NULL; |
aa1870af BF |
3304 | int ret; |
3305 | ||
e50a1c2e BF |
3306 | if (buflen < PAGE_SIZE) { |
3307 | /* As long as we're doing a round trip to the server anyway, | |
3308 | * let's be prepared for a page of acl data. */ | |
3309 | localpage = alloc_page(GFP_KERNEL); | |
3310 | resp_buf = page_address(localpage); | |
3311 | if (localpage == NULL) | |
3312 | return -ENOMEM; | |
3313 | args.acl_pages[0] = localpage; | |
3314 | args.acl_pgbase = 0; | |
663c79b3 | 3315 | args.acl_len = PAGE_SIZE; |
e50a1c2e BF |
3316 | } else { |
3317 | resp_buf = buf; | |
3318 | buf_to_pages(buf, buflen, args.acl_pages, &args.acl_pgbase); | |
3319 | } | |
cccef3b9 | 3320 | ret = nfs4_call_sync(NFS_SERVER(inode), &msg, &args, &res, 0); |
e50a1c2e BF |
3321 | if (ret) |
3322 | goto out_free; | |
663c79b3 BH |
3323 | if (res.acl_len > args.acl_len) |
3324 | nfs4_write_cached_acl(inode, NULL, res.acl_len); | |
e50a1c2e | 3325 | else |
663c79b3 | 3326 | nfs4_write_cached_acl(inode, resp_buf, res.acl_len); |
e50a1c2e BF |
3327 | if (buf) { |
3328 | ret = -ERANGE; | |
663c79b3 | 3329 | if (res.acl_len > buflen) |
e50a1c2e BF |
3330 | goto out_free; |
3331 | if (localpage) | |
663c79b3 | 3332 | memcpy(buf, resp_buf, res.acl_len); |
e50a1c2e | 3333 | } |
663c79b3 | 3334 | ret = res.acl_len; |
e50a1c2e BF |
3335 | out_free: |
3336 | if (localpage) | |
3337 | __free_page(localpage); | |
aa1870af BF |
3338 | return ret; |
3339 | } | |
3340 | ||
16b4289c TM |
3341 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3342 | { | |
3343 | struct nfs4_exception exception = { }; | |
3344 | ssize_t ret; | |
3345 | do { | |
3346 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3347 | if (ret >= 0) | |
3348 | break; | |
3349 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3350 | } while (exception.retry); | |
3351 | return ret; | |
3352 | } | |
3353 | ||
e50a1c2e BF |
3354 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3355 | { | |
3356 | struct nfs_server *server = NFS_SERVER(inode); | |
3357 | int ret; | |
3358 | ||
3359 | if (!nfs4_server_supports_acls(server)) | |
3360 | return -EOPNOTSUPP; | |
3361 | ret = nfs_revalidate_inode(server, inode); | |
3362 | if (ret < 0) | |
3363 | return ret; | |
3364 | ret = nfs4_read_cached_acl(inode, buf, buflen); | |
3365 | if (ret != -ENOENT) | |
3366 | return ret; | |
3367 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3368 | } | |
3369 | ||
16b4289c | 3370 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3371 | { |
3372 | struct nfs_server *server = NFS_SERVER(inode); | |
3373 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3374 | struct nfs_setaclargs arg = { | |
3375 | .fh = NFS_FH(inode), | |
3376 | .acl_pages = pages, | |
3377 | .acl_len = buflen, | |
3378 | }; | |
73c403a9 | 3379 | struct nfs_setaclres res; |
4b580ee3 BF |
3380 | struct rpc_message msg = { |
3381 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3382 | .rpc_argp = &arg, | |
73c403a9 | 3383 | .rpc_resp = &res, |
4b580ee3 BF |
3384 | }; |
3385 | int ret; | |
3386 | ||
3387 | if (!nfs4_server_supports_acls(server)) | |
3388 | return -EOPNOTSUPP; | |
642ac549 | 3389 | nfs_inode_return_delegation(inode); |
4b580ee3 | 3390 | buf_to_pages(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
cccef3b9 | 3391 | ret = nfs4_call_sync(server, &msg, &arg, &res, 1); |
f41f7418 TM |
3392 | nfs_access_zap_cache(inode); |
3393 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3394 | return ret; |
3395 | } | |
3396 | ||
16b4289c TM |
3397 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3398 | { | |
3399 | struct nfs4_exception exception = { }; | |
3400 | int err; | |
3401 | do { | |
3402 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3403 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3404 | &exception); | |
3405 | } while (exception.retry); | |
3406 | return err; | |
3407 | } | |
3408 | ||
1da177e4 | 3409 | static int |
aa5190d0 | 3410 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 3411 | { |
aa5190d0 TM |
3412 | struct nfs_client *clp = server->nfs_client; |
3413 | ||
3414 | if (task->tk_status >= 0) | |
1da177e4 LT |
3415 | return 0; |
3416 | switch(task->tk_status) { | |
9e33bed5 TM |
3417 | case -NFS4ERR_ADMIN_REVOKED: |
3418 | case -NFS4ERR_BAD_STATEID: | |
3419 | case -NFS4ERR_OPENMODE: | |
3420 | if (state == NULL) | |
3421 | break; | |
3422 | nfs4_state_mark_reclaim_nograce(clp, state); | |
a2c0b9e2 | 3423 | goto do_state_recovery; |
1da177e4 | 3424 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 3425 | case -NFS4ERR_STALE_CLIENTID: |
1da177e4 | 3426 | case -NFS4ERR_EXPIRED: |
a2c0b9e2 | 3427 | goto do_state_recovery; |
4745e315 AA |
3428 | #if defined(CONFIG_NFS_V4_1) |
3429 | case -NFS4ERR_BADSESSION: | |
3430 | case -NFS4ERR_BADSLOT: | |
3431 | case -NFS4ERR_BAD_HIGH_SLOT: | |
3432 | case -NFS4ERR_DEADSESSION: | |
3433 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
3434 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
3435 | case -NFS4ERR_SEQ_MISORDERED: | |
3436 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
3437 | task->tk_status); | |
0b9e2d41 | 3438 | nfs4_schedule_state_recovery(clp); |
4745e315 AA |
3439 | task->tk_status = 0; |
3440 | return -EAGAIN; | |
3441 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 3442 | case -NFS4ERR_DELAY: |
aa5190d0 | 3443 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 3444 | case -NFS4ERR_GRACE: |
2c643488 | 3445 | case -EKEYEXPIRED: |
1da177e4 LT |
3446 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
3447 | task->tk_status = 0; | |
3448 | return -EAGAIN; | |
3449 | case -NFS4ERR_OLD_STATEID: | |
3450 | task->tk_status = 0; | |
3451 | return -EAGAIN; | |
3452 | } | |
3453 | task->tk_status = nfs4_map_errors(task->tk_status); | |
3454 | return 0; | |
a2c0b9e2 TM |
3455 | do_state_recovery: |
3456 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); | |
3457 | nfs4_schedule_state_recovery(clp); | |
3458 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) | |
3459 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
3460 | task->tk_status = 0; | |
3461 | return -EAGAIN; | |
1da177e4 LT |
3462 | } |
3463 | ||
bb8b27e5 TM |
3464 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
3465 | unsigned short port, struct rpc_cred *cred, | |
3466 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
3467 | { |
3468 | nfs4_verifier sc_verifier; | |
3469 | struct nfs4_setclientid setclientid = { | |
3470 | .sc_verifier = &sc_verifier, | |
3471 | .sc_prog = program, | |
3472 | }; | |
3473 | struct rpc_message msg = { | |
3474 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
3475 | .rpc_argp = &setclientid, | |
bb8b27e5 | 3476 | .rpc_resp = res, |
286d7d6a | 3477 | .rpc_cred = cred, |
1da177e4 | 3478 | }; |
bc4785cd | 3479 | __be32 *p; |
1da177e4 LT |
3480 | int loop = 0; |
3481 | int status; | |
3482 | ||
bc4785cd | 3483 | p = (__be32*)sc_verifier.data; |
1da177e4 LT |
3484 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); |
3485 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
3486 | ||
3487 | for(;;) { | |
3488 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, | |
69dd716c | 3489 | sizeof(setclientid.sc_name), "%s/%s %s %s %u", |
d4d3c507 CL |
3490 | clp->cl_ipaddr, |
3491 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3492 | RPC_DISPLAY_ADDR), | |
69dd716c TM |
3493 | rpc_peeraddr2str(clp->cl_rpcclient, |
3494 | RPC_DISPLAY_PROTO), | |
78ea323b | 3495 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
1da177e4 LT |
3496 | clp->cl_id_uniquifier); |
3497 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
d4d3c507 CL |
3498 | sizeof(setclientid.sc_netid), |
3499 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3500 | RPC_DISPLAY_NETID)); | |
1da177e4 | 3501 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 3502 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
3503 | clp->cl_ipaddr, port >> 8, port & 255); |
3504 | ||
3505 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3506 | if (status != -NFS4ERR_CLID_INUSE) | |
3507 | break; | |
3508 | if (signalled()) | |
3509 | break; | |
3510 | if (loop++ & 1) | |
3511 | ssleep(clp->cl_lease_time + 1); | |
3512 | else | |
3513 | if (++clp->cl_id_uniquifier == 0) | |
3514 | break; | |
3515 | } | |
3516 | return status; | |
3517 | } | |
3518 | ||
bb8b27e5 TM |
3519 | static int _nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
3520 | struct nfs4_setclientid_res *arg, | |
3521 | struct rpc_cred *cred) | |
1da177e4 LT |
3522 | { |
3523 | struct nfs_fsinfo fsinfo; | |
3524 | struct rpc_message msg = { | |
3525 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 3526 | .rpc_argp = arg, |
1da177e4 | 3527 | .rpc_resp = &fsinfo, |
286d7d6a | 3528 | .rpc_cred = cred, |
1da177e4 LT |
3529 | }; |
3530 | unsigned long now; | |
3531 | int status; | |
3532 | ||
3533 | now = jiffies; | |
3534 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3535 | if (status == 0) { | |
3536 | spin_lock(&clp->cl_lock); | |
3537 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
3538 | clp->cl_last_renewal = now; | |
3539 | spin_unlock(&clp->cl_lock); | |
3540 | } | |
3541 | return status; | |
3542 | } | |
3543 | ||
bb8b27e5 TM |
3544 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
3545 | struct nfs4_setclientid_res *arg, | |
3546 | struct rpc_cred *cred) | |
51581f3b | 3547 | { |
77e03677 | 3548 | long timeout = 0; |
51581f3b TM |
3549 | int err; |
3550 | do { | |
bb8b27e5 | 3551 | err = _nfs4_proc_setclientid_confirm(clp, arg, cred); |
51581f3b TM |
3552 | switch (err) { |
3553 | case 0: | |
3554 | return err; | |
3555 | case -NFS4ERR_RESOURCE: | |
3556 | /* The IBM lawyers misread another document! */ | |
3557 | case -NFS4ERR_DELAY: | |
3558 | err = nfs4_delay(clp->cl_rpcclient, &timeout); | |
3559 | } | |
3560 | } while (err == 0); | |
3561 | return err; | |
3562 | } | |
3563 | ||
fe650407 TM |
3564 | struct nfs4_delegreturndata { |
3565 | struct nfs4_delegreturnargs args; | |
fa178f29 | 3566 | struct nfs4_delegreturnres res; |
fe650407 TM |
3567 | struct nfs_fh fh; |
3568 | nfs4_stateid stateid; | |
26e976a8 | 3569 | unsigned long timestamp; |
fa178f29 | 3570 | struct nfs_fattr fattr; |
fe650407 TM |
3571 | int rpc_status; |
3572 | }; | |
3573 | ||
fe650407 TM |
3574 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
3575 | { | |
3576 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 3577 | |
14516c3a TM |
3578 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
3579 | return; | |
938e1010 | 3580 | |
79708861 RL |
3581 | switch (task->tk_status) { |
3582 | case -NFS4ERR_STALE_STATEID: | |
3583 | case -NFS4ERR_EXPIRED: | |
3584 | case 0: | |
fa178f29 | 3585 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
3586 | break; |
3587 | default: | |
3588 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
3589 | -EAGAIN) { | |
3590 | nfs_restart_rpc(task, data->res.server->nfs_client); | |
3591 | return; | |
3592 | } | |
3593 | } | |
3594 | data->rpc_status = task->tk_status; | |
fe650407 TM |
3595 | } |
3596 | ||
3597 | static void nfs4_delegreturn_release(void *calldata) | |
3598 | { | |
fe650407 TM |
3599 | kfree(calldata); |
3600 | } | |
3601 | ||
938e1010 AA |
3602 | #if defined(CONFIG_NFS_V4_1) |
3603 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
3604 | { | |
3605 | struct nfs4_delegreturndata *d_data; | |
3606 | ||
3607 | d_data = (struct nfs4_delegreturndata *)data; | |
3608 | ||
035168ab | 3609 | if (nfs4_setup_sequence(d_data->res.server, |
938e1010 AA |
3610 | &d_data->args.seq_args, |
3611 | &d_data->res.seq_res, 1, task)) | |
3612 | return; | |
3613 | rpc_call_start(task); | |
3614 | } | |
3615 | #endif /* CONFIG_NFS_V4_1 */ | |
3616 | ||
c8d149f3 | 3617 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
3618 | #if defined(CONFIG_NFS_V4_1) |
3619 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
3620 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
3621 | .rpc_call_done = nfs4_delegreturn_done, |
3622 | .rpc_release = nfs4_delegreturn_release, | |
3623 | }; | |
3624 | ||
e6f81075 | 3625 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
3626 | { |
3627 | struct nfs4_delegreturndata *data; | |
fa178f29 | 3628 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 3629 | struct rpc_task *task; |
5138fde0 TM |
3630 | struct rpc_message msg = { |
3631 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
3632 | .rpc_cred = cred, | |
3633 | }; | |
c970aa85 TM |
3634 | struct rpc_task_setup task_setup_data = { |
3635 | .rpc_client = server->client, | |
5138fde0 | 3636 | .rpc_message = &msg, |
c970aa85 TM |
3637 | .callback_ops = &nfs4_delegreturn_ops, |
3638 | .flags = RPC_TASK_ASYNC, | |
3639 | }; | |
e6f81075 | 3640 | int status = 0; |
fe650407 | 3641 | |
8535b2be | 3642 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
3643 | if (data == NULL) |
3644 | return -ENOMEM; | |
3645 | data->args.fhandle = &data->fh; | |
3646 | data->args.stateid = &data->stateid; | |
fa178f29 | 3647 | data->args.bitmask = server->attr_bitmask; |
fe650407 TM |
3648 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
3649 | memcpy(&data->stateid, stateid, sizeof(data->stateid)); | |
fa178f29 TM |
3650 | data->res.fattr = &data->fattr; |
3651 | data->res.server = server; | |
5138fde0 | 3652 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 3653 | data->timestamp = jiffies; |
fe650407 TM |
3654 | data->rpc_status = 0; |
3655 | ||
c970aa85 | 3656 | task_setup_data.callback_data = data; |
5138fde0 TM |
3657 | msg.rpc_argp = &data->args, |
3658 | msg.rpc_resp = &data->res, | |
c970aa85 | 3659 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 3660 | if (IS_ERR(task)) |
fe650407 | 3661 | return PTR_ERR(task); |
e6f81075 TM |
3662 | if (!issync) |
3663 | goto out; | |
fe650407 | 3664 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
3665 | if (status != 0) |
3666 | goto out; | |
3667 | status = data->rpc_status; | |
3668 | if (status != 0) | |
3669 | goto out; | |
3670 | nfs_refresh_inode(inode, &data->fattr); | |
3671 | out: | |
e6b3c4db | 3672 | rpc_put_task(task); |
fe650407 | 3673 | return status; |
1da177e4 LT |
3674 | } |
3675 | ||
e6f81075 | 3676 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
3677 | { |
3678 | struct nfs_server *server = NFS_SERVER(inode); | |
3679 | struct nfs4_exception exception = { }; | |
3680 | int err; | |
3681 | do { | |
e6f81075 | 3682 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
3683 | switch (err) { |
3684 | case -NFS4ERR_STALE_STATEID: | |
3685 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
3686 | case 0: |
3687 | return 0; | |
3688 | } | |
3689 | err = nfs4_handle_exception(server, err, &exception); | |
3690 | } while (exception.retry); | |
3691 | return err; | |
3692 | } | |
3693 | ||
3694 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
3695 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
3696 | ||
3697 | /* | |
3698 | * sleep, with exponential backoff, and retry the LOCK operation. | |
3699 | */ | |
3700 | static unsigned long | |
3701 | nfs4_set_lock_task_retry(unsigned long timeout) | |
3702 | { | |
150030b7 | 3703 | schedule_timeout_killable(timeout); |
1da177e4 LT |
3704 | timeout <<= 1; |
3705 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
3706 | return NFS4_LOCK_MAXTIMEOUT; | |
3707 | return timeout; | |
3708 | } | |
3709 | ||
1da177e4 LT |
3710 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
3711 | { | |
3712 | struct inode *inode = state->inode; | |
3713 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 3714 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 3715 | struct nfs_lockt_args arg = { |
1da177e4 | 3716 | .fh = NFS_FH(inode), |
911d1aaf | 3717 | .fl = request, |
1da177e4 | 3718 | }; |
911d1aaf TM |
3719 | struct nfs_lockt_res res = { |
3720 | .denied = request, | |
1da177e4 LT |
3721 | }; |
3722 | struct rpc_message msg = { | |
3723 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
3724 | .rpc_argp = &arg, | |
3725 | .rpc_resp = &res, | |
3726 | .rpc_cred = state->owner->so_cred, | |
3727 | }; | |
1da177e4 LT |
3728 | struct nfs4_lock_state *lsp; |
3729 | int status; | |
3730 | ||
911d1aaf | 3731 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
3732 | status = nfs4_set_lock_state(state, request); |
3733 | if (status != 0) | |
3734 | goto out; | |
3735 | lsp = request->fl_u.nfs4_fl.owner; | |
9f958ab8 | 3736 | arg.lock_owner.id = lsp->ls_id.id; |
cccef3b9 | 3737 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
911d1aaf TM |
3738 | switch (status) { |
3739 | case 0: | |
3740 | request->fl_type = F_UNLCK; | |
3741 | break; | |
3742 | case -NFS4ERR_DENIED: | |
3743 | status = 0; | |
1da177e4 | 3744 | } |
70cc6487 | 3745 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 3746 | out: |
1da177e4 LT |
3747 | return status; |
3748 | } | |
3749 | ||
3750 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3751 | { | |
3752 | struct nfs4_exception exception = { }; | |
3753 | int err; | |
3754 | ||
3755 | do { | |
3756 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
3757 | _nfs4_proc_getlk(state, cmd, request), | |
3758 | &exception); | |
3759 | } while (exception.retry); | |
3760 | return err; | |
3761 | } | |
3762 | ||
3763 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
3764 | { | |
3765 | int res = 0; | |
3766 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
3767 | case FL_POSIX: | |
3768 | res = posix_lock_file_wait(file, fl); | |
3769 | break; | |
3770 | case FL_FLOCK: | |
3771 | res = flock_lock_file_wait(file, fl); | |
3772 | break; | |
3773 | default: | |
3774 | BUG(); | |
3775 | } | |
1da177e4 LT |
3776 | return res; |
3777 | } | |
3778 | ||
faf5f49c | 3779 | struct nfs4_unlockdata { |
911d1aaf TM |
3780 | struct nfs_locku_args arg; |
3781 | struct nfs_locku_res res; | |
faf5f49c TM |
3782 | struct nfs4_lock_state *lsp; |
3783 | struct nfs_open_context *ctx; | |
911d1aaf TM |
3784 | struct file_lock fl; |
3785 | const struct nfs_server *server; | |
26e976a8 | 3786 | unsigned long timestamp; |
faf5f49c TM |
3787 | }; |
3788 | ||
911d1aaf TM |
3789 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
3790 | struct nfs_open_context *ctx, | |
3791 | struct nfs4_lock_state *lsp, | |
3792 | struct nfs_seqid *seqid) | |
3793 | { | |
3794 | struct nfs4_unlockdata *p; | |
3795 | struct inode *inode = lsp->ls_state->inode; | |
3796 | ||
8535b2be | 3797 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
3798 | if (p == NULL) |
3799 | return NULL; | |
3800 | p->arg.fh = NFS_FH(inode); | |
3801 | p->arg.fl = &p->fl; | |
3802 | p->arg.seqid = seqid; | |
c1d51931 | 3803 | p->res.seqid = seqid; |
911d1aaf TM |
3804 | p->arg.stateid = &lsp->ls_stateid; |
3805 | p->lsp = lsp; | |
3806 | atomic_inc(&lsp->ls_count); | |
3807 | /* Ensure we don't close file until we're done freeing locks! */ | |
3808 | p->ctx = get_nfs_open_context(ctx); | |
3809 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
3810 | p->server = NFS_SERVER(inode); | |
3811 | return p; | |
3812 | } | |
3813 | ||
06f814a3 | 3814 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 3815 | { |
963d8fe5 | 3816 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 3817 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
3818 | nfs4_put_lock_state(calldata->lsp); |
3819 | put_nfs_open_context(calldata->ctx); | |
3820 | kfree(calldata); | |
faf5f49c TM |
3821 | } |
3822 | ||
963d8fe5 | 3823 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 3824 | { |
963d8fe5 | 3825 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 3826 | |
14516c3a TM |
3827 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
3828 | return; | |
faf5f49c TM |
3829 | switch (task->tk_status) { |
3830 | case 0: | |
3831 | memcpy(calldata->lsp->ls_stateid.data, | |
911d1aaf | 3832 | calldata->res.stateid.data, |
faf5f49c | 3833 | sizeof(calldata->lsp->ls_stateid.data)); |
26e976a8 | 3834 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 3835 | break; |
9e33bed5 TM |
3836 | case -NFS4ERR_BAD_STATEID: |
3837 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
3838 | case -NFS4ERR_STALE_STATEID: |
3839 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
3840 | break; |
3841 | default: | |
9e33bed5 | 3842 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
0110ee15 | 3843 | nfs_restart_rpc(task, |
d61e612a | 3844 | calldata->server->nfs_client); |
faf5f49c | 3845 | } |
faf5f49c TM |
3846 | } |
3847 | ||
4ce70ada | 3848 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 3849 | { |
4ce70ada | 3850 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 3851 | |
911d1aaf | 3852 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
3853 | return; |
3854 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
3855 | /* Note: exit _without_ running nfs4_locku_done */ |
3856 | task->tk_action = NULL; | |
faf5f49c TM |
3857 | return; |
3858 | } | |
26e976a8 | 3859 | calldata->timestamp = jiffies; |
035168ab | 3860 | if (nfs4_setup_sequence(calldata->server, |
a893693c AA |
3861 | &calldata->arg.seq_args, |
3862 | &calldata->res.seq_res, 1, task)) | |
3863 | return; | |
5138fde0 | 3864 | rpc_call_start(task); |
faf5f49c TM |
3865 | } |
3866 | ||
963d8fe5 | 3867 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 3868 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 3869 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 3870 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
3871 | }; |
3872 | ||
a5d16a4d TM |
3873 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
3874 | struct nfs_open_context *ctx, | |
3875 | struct nfs4_lock_state *lsp, | |
3876 | struct nfs_seqid *seqid) | |
3877 | { | |
3878 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
3879 | struct rpc_message msg = { |
3880 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
3881 | .rpc_cred = ctx->cred, | |
3882 | }; | |
c970aa85 TM |
3883 | struct rpc_task_setup task_setup_data = { |
3884 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 3885 | .rpc_message = &msg, |
c970aa85 | 3886 | .callback_ops = &nfs4_locku_ops, |
101070ca | 3887 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
3888 | .flags = RPC_TASK_ASYNC, |
3889 | }; | |
a5d16a4d | 3890 | |
137d6aca FF |
3891 | /* Ensure this is an unlock - when canceling a lock, the |
3892 | * canceled lock is passed in, and it won't be an unlock. | |
3893 | */ | |
3894 | fl->fl_type = F_UNLCK; | |
3895 | ||
a5d16a4d TM |
3896 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
3897 | if (data == NULL) { | |
3898 | nfs_free_seqid(seqid); | |
3899 | return ERR_PTR(-ENOMEM); | |
3900 | } | |
3901 | ||
5138fde0 TM |
3902 | msg.rpc_argp = &data->arg, |
3903 | msg.rpc_resp = &data->res, | |
c970aa85 TM |
3904 | task_setup_data.callback_data = data; |
3905 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
3906 | } |
3907 | ||
faf5f49c TM |
3908 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
3909 | { | |
19e03c57 | 3910 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 3911 | struct nfs_seqid *seqid; |
1da177e4 | 3912 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
3913 | struct rpc_task *task; |
3914 | int status = 0; | |
536ff0f8 | 3915 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 3916 | |
8d0a8a9d | 3917 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
3918 | /* Unlock _before_ we do the RPC call */ |
3919 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
3920 | down_read(&nfsi->rwsem); |
3921 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
3922 | up_read(&nfsi->rwsem); | |
9b073574 | 3923 | goto out; |
19e03c57 TM |
3924 | } |
3925 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 3926 | if (status != 0) |
9b073574 TM |
3927 | goto out; |
3928 | /* Is this a delegated lock? */ | |
3929 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
3930 | goto out; | |
8d0a8a9d | 3931 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 3932 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 3933 | status = -ENOMEM; |
911d1aaf | 3934 | if (seqid == NULL) |
9b073574 | 3935 | goto out; |
cd3758e3 | 3936 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
3937 | status = PTR_ERR(task); |
3938 | if (IS_ERR(task)) | |
9b073574 | 3939 | goto out; |
a5d16a4d | 3940 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 3941 | rpc_put_task(task); |
9b073574 | 3942 | out: |
536ff0f8 | 3943 | request->fl_flags = fl_flags; |
1da177e4 LT |
3944 | return status; |
3945 | } | |
3946 | ||
a5d16a4d TM |
3947 | struct nfs4_lockdata { |
3948 | struct nfs_lock_args arg; | |
3949 | struct nfs_lock_res res; | |
3950 | struct nfs4_lock_state *lsp; | |
3951 | struct nfs_open_context *ctx; | |
3952 | struct file_lock fl; | |
26e976a8 | 3953 | unsigned long timestamp; |
a5d16a4d TM |
3954 | int rpc_status; |
3955 | int cancelled; | |
66179efe | 3956 | struct nfs_server *server; |
a5d16a4d TM |
3957 | }; |
3958 | ||
3959 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
3960 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
3961 | gfp_t gfp_mask) | |
1da177e4 | 3962 | { |
a5d16a4d TM |
3963 | struct nfs4_lockdata *p; |
3964 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 3965 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 3966 | |
8535b2be | 3967 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
3968 | if (p == NULL) |
3969 | return NULL; | |
3970 | ||
3971 | p->arg.fh = NFS_FH(inode); | |
3972 | p->arg.fl = &p->fl; | |
8535b2be | 3973 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
3974 | if (p->arg.open_seqid == NULL) |
3975 | goto out_free; | |
8535b2be | 3976 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 3977 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 3978 | goto out_free_seqid; |
a5d16a4d | 3979 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 3980 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 3981 | p->arg.lock_owner.id = lsp->ls_id.id; |
c1d51931 | 3982 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 3983 | p->lsp = lsp; |
66179efe | 3984 | p->server = server; |
a5d16a4d TM |
3985 | atomic_inc(&lsp->ls_count); |
3986 | p->ctx = get_nfs_open_context(ctx); | |
3987 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
3988 | return p; | |
2f74c0a0 TM |
3989 | out_free_seqid: |
3990 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
3991 | out_free: |
3992 | kfree(p); | |
3993 | return NULL; | |
3994 | } | |
3995 | ||
3996 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
3997 | { | |
3998 | struct nfs4_lockdata *data = calldata; | |
3999 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4000 | |
3110ff80 | 4001 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
4002 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
4003 | return; | |
a5d16a4d TM |
4004 | /* Do we need to do an open_to_lock_owner? */ |
4005 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
4006 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
4007 | return; | |
a5d16a4d TM |
4008 | data->arg.open_stateid = &state->stateid; |
4009 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4010 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4011 | } else |
4012 | data->arg.new_lock_owner = 0; | |
26e976a8 | 4013 | data->timestamp = jiffies; |
035168ab TM |
4014 | if (nfs4_setup_sequence(data->server, |
4015 | &data->arg.seq_args, | |
66179efe AA |
4016 | &data->res.seq_res, 1, task)) |
4017 | return; | |
5138fde0 | 4018 | rpc_call_start(task); |
3110ff80 | 4019 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
a5d16a4d TM |
4020 | } |
4021 | ||
b257957e AB |
4022 | static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata) |
4023 | { | |
4024 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
4025 | nfs4_lock_prepare(task, calldata); | |
4026 | } | |
4027 | ||
a5d16a4d TM |
4028 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4029 | { | |
4030 | struct nfs4_lockdata *data = calldata; | |
4031 | ||
3110ff80 | 4032 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4033 | |
14516c3a TM |
4034 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4035 | return; | |
66179efe | 4036 | |
a5d16a4d | 4037 | data->rpc_status = task->tk_status; |
a5d16a4d | 4038 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4039 | if (data->rpc_status == 0) |
4040 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4041 | else | |
4042 | goto out; | |
4043 | } | |
4044 | if (data->rpc_status == 0) { | |
4045 | memcpy(data->lsp->ls_stateid.data, data->res.stateid.data, | |
4046 | sizeof(data->lsp->ls_stateid.data)); | |
4047 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; | |
88be9f99 | 4048 | renew_lease(NFS_SERVER(data->ctx->path.dentry->d_inode), data->timestamp); |
a5d16a4d | 4049 | } |
a5d16a4d | 4050 | out: |
3110ff80 | 4051 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4052 | } |
4053 | ||
4054 | static void nfs4_lock_release(void *calldata) | |
4055 | { | |
4056 | struct nfs4_lockdata *data = calldata; | |
4057 | ||
3110ff80 | 4058 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4059 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4060 | if (data->cancelled != 0) { |
4061 | struct rpc_task *task; | |
4062 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4063 | data->arg.lock_seqid); | |
4064 | if (!IS_ERR(task)) | |
e6b3c4db | 4065 | rpc_put_task(task); |
3110ff80 | 4066 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4067 | } else |
4068 | nfs_free_seqid(data->arg.lock_seqid); | |
4069 | nfs4_put_lock_state(data->lsp); | |
4070 | put_nfs_open_context(data->ctx); | |
4071 | kfree(data); | |
3110ff80 | 4072 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4073 | } |
4074 | ||
4075 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4076 | .rpc_call_prepare = nfs4_lock_prepare, | |
4077 | .rpc_call_done = nfs4_lock_done, | |
4078 | .rpc_release = nfs4_lock_release, | |
4079 | }; | |
4080 | ||
b257957e AB |
4081 | static const struct rpc_call_ops nfs4_recover_lock_ops = { |
4082 | .rpc_call_prepare = nfs4_recover_lock_prepare, | |
4083 | .rpc_call_done = nfs4_lock_done, | |
4084 | .rpc_release = nfs4_lock_release, | |
4085 | }; | |
4086 | ||
2bee72a6 TM |
4087 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4088 | { | |
4089 | struct nfs_client *clp = server->nfs_client; | |
4090 | struct nfs4_state *state = lsp->ls_state; | |
4091 | ||
4092 | switch (error) { | |
4093 | case -NFS4ERR_ADMIN_REVOKED: | |
4094 | case -NFS4ERR_BAD_STATEID: | |
4095 | case -NFS4ERR_EXPIRED: | |
4096 | if (new_lock_owner != 0 || | |
4097 | (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) | |
4098 | nfs4_state_mark_reclaim_nograce(clp, state); | |
4099 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; | |
a2c0b9e2 TM |
4100 | break; |
4101 | case -NFS4ERR_STALE_STATEID: | |
4102 | if (new_lock_owner != 0 || | |
4103 | (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) | |
4104 | nfs4_state_mark_reclaim_reboot(clp, state); | |
4105 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; | |
2bee72a6 TM |
4106 | }; |
4107 | } | |
4108 | ||
afe6c27c | 4109 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4110 | { |
4111 | struct nfs4_lockdata *data; | |
4112 | struct rpc_task *task; | |
5138fde0 TM |
4113 | struct rpc_message msg = { |
4114 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4115 | .rpc_cred = state->owner->so_cred, | |
4116 | }; | |
c970aa85 TM |
4117 | struct rpc_task_setup task_setup_data = { |
4118 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4119 | .rpc_message = &msg, |
c970aa85 | 4120 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4121 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4122 | .flags = RPC_TASK_ASYNC, |
4123 | }; | |
a5d16a4d TM |
4124 | int ret; |
4125 | ||
3110ff80 | 4126 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4127 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4128 | fl->fl_u.nfs4_fl.owner, |
4129 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4130 | if (data == NULL) |
4131 | return -ENOMEM; | |
4132 | if (IS_SETLKW(cmd)) | |
4133 | data->arg.block = 1; | |
b257957e AB |
4134 | if (recovery_type > NFS_LOCK_NEW) { |
4135 | if (recovery_type == NFS_LOCK_RECLAIM) | |
afe6c27c | 4136 | data->arg.reclaim = NFS_LOCK_RECLAIM; |
b257957e AB |
4137 | task_setup_data.callback_ops = &nfs4_recover_lock_ops; |
4138 | } | |
5138fde0 TM |
4139 | msg.rpc_argp = &data->arg, |
4140 | msg.rpc_resp = &data->res, | |
c970aa85 TM |
4141 | task_setup_data.callback_data = data; |
4142 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 4143 | if (IS_ERR(task)) |
a5d16a4d | 4144 | return PTR_ERR(task); |
a5d16a4d TM |
4145 | ret = nfs4_wait_for_completion_rpc_task(task); |
4146 | if (ret == 0) { | |
4147 | ret = data->rpc_status; | |
2bee72a6 TM |
4148 | if (ret) |
4149 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4150 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4151 | } else |
4152 | data->cancelled = 1; | |
e6b3c4db | 4153 | rpc_put_task(task); |
3110ff80 | 4154 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4155 | return ret; |
1da177e4 LT |
4156 | } |
4157 | ||
4158 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4159 | { | |
202b50dc TM |
4160 | struct nfs_server *server = NFS_SERVER(state->inode); |
4161 | struct nfs4_exception exception = { }; | |
4162 | int err; | |
4163 | ||
4164 | do { | |
42a2d13e TM |
4165 | /* Cache the lock if possible... */ |
4166 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4167 | return 0; | |
afe6c27c | 4168 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4169 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4170 | break; |
4171 | nfs4_handle_exception(server, err, &exception); | |
4172 | } while (exception.retry); | |
4173 | return err; | |
1da177e4 LT |
4174 | } |
4175 | ||
4176 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4177 | { | |
202b50dc TM |
4178 | struct nfs_server *server = NFS_SERVER(state->inode); |
4179 | struct nfs4_exception exception = { }; | |
4180 | int err; | |
4181 | ||
6bfc93ef TM |
4182 | err = nfs4_set_lock_state(state, request); |
4183 | if (err != 0) | |
4184 | return err; | |
202b50dc | 4185 | do { |
42a2d13e TM |
4186 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4187 | return 0; | |
afe6c27c | 4188 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4189 | switch (err) { |
4190 | default: | |
4191 | goto out; | |
4192 | case -NFS4ERR_GRACE: | |
4193 | case -NFS4ERR_DELAY: | |
4194 | nfs4_handle_exception(server, err, &exception); | |
4195 | err = 0; | |
4196 | } | |
202b50dc | 4197 | } while (exception.retry); |
a9ed2e25 | 4198 | out: |
202b50dc | 4199 | return err; |
1da177e4 LT |
4200 | } |
4201 | ||
4202 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4203 | { | |
19e03c57 | 4204 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4205 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 4206 | int status = -ENOLCK; |
1da177e4 | 4207 | |
8e469ebd TM |
4208 | if ((fl_flags & FL_POSIX) && |
4209 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
4210 | goto out; | |
6bfc93ef | 4211 | /* Is this a delegated open? */ |
6bfc93ef TM |
4212 | status = nfs4_set_lock_state(state, request); |
4213 | if (status != 0) | |
4214 | goto out; | |
01c3b861 TM |
4215 | request->fl_flags |= FL_ACCESS; |
4216 | status = do_vfs_lock(request->fl_file, request); | |
4217 | if (status < 0) | |
4218 | goto out; | |
19e03c57 | 4219 | down_read(&nfsi->rwsem); |
01c3b861 | 4220 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4221 | /* Yes: cache locks! */ |
01c3b861 | 4222 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4223 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4224 | status = do_vfs_lock(request->fl_file, request); | |
4225 | goto out_unlock; | |
01c3b861 | 4226 | } |
afe6c27c | 4227 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 4228 | if (status != 0) |
01c3b861 | 4229 | goto out_unlock; |
6bfc93ef | 4230 | /* Note: we always want to sleep here! */ |
01c3b861 | 4231 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4232 | if (do_vfs_lock(request->fl_file, request) < 0) |
3110ff80 | 4233 | printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __func__); |
01c3b861 | 4234 | out_unlock: |
19e03c57 | 4235 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4236 | out: |
4237 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4238 | return status; |
4239 | } | |
4240 | ||
4241 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4242 | { | |
4243 | struct nfs4_exception exception = { }; | |
4244 | int err; | |
4245 | ||
4246 | do { | |
965b5d67 TM |
4247 | err = _nfs4_proc_setlk(state, cmd, request); |
4248 | if (err == -NFS4ERR_DENIED) | |
4249 | err = -EAGAIN; | |
1da177e4 | 4250 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4251 | err, &exception); |
1da177e4 LT |
4252 | } while (exception.retry); |
4253 | return err; | |
4254 | } | |
4255 | ||
4256 | static int | |
4257 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
4258 | { | |
4259 | struct nfs_open_context *ctx; | |
4260 | struct nfs4_state *state; | |
4261 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
4262 | int status; | |
4263 | ||
4264 | /* verify open state */ | |
cd3758e3 | 4265 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
4266 | state = ctx->state; |
4267 | ||
4268 | if (request->fl_start < 0 || request->fl_end < 0) | |
4269 | return -EINVAL; | |
4270 | ||
d953126a TM |
4271 | if (IS_GETLK(cmd)) { |
4272 | if (state != NULL) | |
4273 | return nfs4_proc_getlk(state, F_GETLK, request); | |
4274 | return 0; | |
4275 | } | |
1da177e4 LT |
4276 | |
4277 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
4278 | return -EINVAL; | |
4279 | ||
d953126a TM |
4280 | if (request->fl_type == F_UNLCK) { |
4281 | if (state != NULL) | |
4282 | return nfs4_proc_unlck(state, cmd, request); | |
4283 | return 0; | |
4284 | } | |
1da177e4 | 4285 | |
d953126a TM |
4286 | if (state == NULL) |
4287 | return -ENOLCK; | |
1da177e4 LT |
4288 | do { |
4289 | status = nfs4_proc_setlk(state, cmd, request); | |
4290 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
4291 | break; | |
4292 | timeout = nfs4_set_lock_task_retry(timeout); | |
4293 | status = -ERESTARTSYS; | |
4294 | if (signalled()) | |
4295 | break; | |
4296 | } while(status < 0); | |
1da177e4 LT |
4297 | return status; |
4298 | } | |
4299 | ||
888e694c TM |
4300 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
4301 | { | |
4302 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4303 | struct nfs4_exception exception = { }; | |
4304 | int err; | |
4305 | ||
4306 | err = nfs4_set_lock_state(state, fl); | |
4307 | if (err != 0) | |
4308 | goto out; | |
4309 | do { | |
afe6c27c | 4310 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
4311 | switch (err) { |
4312 | default: | |
4313 | printk(KERN_ERR "%s: unhandled error %d.\n", | |
4314 | __func__, err); | |
4315 | case 0: | |
965b5d67 | 4316 | case -ESTALE: |
d5122201 TM |
4317 | goto out; |
4318 | case -NFS4ERR_EXPIRED: | |
4319 | case -NFS4ERR_STALE_CLIENTID: | |
965b5d67 | 4320 | case -NFS4ERR_STALE_STATEID: |
74e7bb73 RL |
4321 | case -NFS4ERR_BADSESSION: |
4322 | case -NFS4ERR_BADSLOT: | |
4323 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4324 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4325 | case -NFS4ERR_DEADSESSION: | |
d5122201 TM |
4326 | nfs4_schedule_state_recovery(server->nfs_client); |
4327 | goto out; | |
965b5d67 TM |
4328 | case -ERESTARTSYS: |
4329 | /* | |
4330 | * The show must go on: exit, but mark the | |
4331 | * stateid as needing recovery. | |
4332 | */ | |
4333 | case -NFS4ERR_ADMIN_REVOKED: | |
4334 | case -NFS4ERR_BAD_STATEID: | |
4335 | case -NFS4ERR_OPENMODE: | |
4336 | nfs4_state_mark_reclaim_nograce(server->nfs_client, state); | |
4337 | err = 0; | |
4338 | goto out; | |
168667c4 TM |
4339 | case -EKEYEXPIRED: |
4340 | /* | |
4341 | * User RPCSEC_GSS context has expired. | |
4342 | * We cannot recover this stateid now, so | |
4343 | * skip it and allow recovery thread to | |
4344 | * proceed. | |
4345 | */ | |
4346 | err = 0; | |
4347 | goto out; | |
965b5d67 TM |
4348 | case -ENOMEM: |
4349 | case -NFS4ERR_DENIED: | |
4350 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
4351 | err = 0; | |
4352 | goto out; | |
d5122201 TM |
4353 | case -NFS4ERR_DELAY: |
4354 | break; | |
4355 | } | |
888e694c TM |
4356 | err = nfs4_handle_exception(server, err, &exception); |
4357 | } while (exception.retry); | |
4358 | out: | |
4359 | return err; | |
4360 | } | |
6b3b5496 | 4361 | |
d3c7b7cc TM |
4362 | static void nfs4_release_lockowner_release(void *calldata) |
4363 | { | |
4364 | kfree(calldata); | |
4365 | } | |
4366 | ||
4367 | const struct rpc_call_ops nfs4_release_lockowner_ops = { | |
4368 | .rpc_release = nfs4_release_lockowner_release, | |
4369 | }; | |
4370 | ||
4371 | void nfs4_release_lockowner(const struct nfs4_lock_state *lsp) | |
4372 | { | |
4373 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
4374 | struct nfs_release_lockowner_args *args; | |
4375 | struct rpc_message msg = { | |
4376 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
4377 | }; | |
4378 | ||
4379 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
4380 | return; | |
4381 | args = kmalloc(sizeof(*args), GFP_NOFS); | |
4382 | if (!args) | |
4383 | return; | |
4384 | args->lock_owner.clientid = server->nfs_client->cl_clientid; | |
4385 | args->lock_owner.id = lsp->ls_id.id; | |
4386 | msg.rpc_argp = args; | |
4387 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, args); | |
4388 | } | |
4389 | ||
aa1870af BF |
4390 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
4391 | ||
6b3b5496 BF |
4392 | int nfs4_setxattr(struct dentry *dentry, const char *key, const void *buf, |
4393 | size_t buflen, int flags) | |
4394 | { | |
4b580ee3 BF |
4395 | struct inode *inode = dentry->d_inode; |
4396 | ||
4397 | if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0) | |
4398 | return -EOPNOTSUPP; | |
4399 | ||
4b580ee3 | 4400 | return nfs4_proc_set_acl(inode, buf, buflen); |
6b3b5496 BF |
4401 | } |
4402 | ||
4403 | /* The getxattr man page suggests returning -ENODATA for unknown attributes, | |
4404 | * and that's what we'll do for e.g. user attributes that haven't been set. | |
4405 | * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported | |
4406 | * attributes in kernel-managed attribute namespaces. */ | |
4407 | ssize_t nfs4_getxattr(struct dentry *dentry, const char *key, void *buf, | |
4408 | size_t buflen) | |
4409 | { | |
aa1870af BF |
4410 | struct inode *inode = dentry->d_inode; |
4411 | ||
4412 | if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0) | |
4413 | return -EOPNOTSUPP; | |
4414 | ||
4415 | return nfs4_proc_get_acl(inode, buf, buflen); | |
6b3b5496 BF |
4416 | } |
4417 | ||
4418 | ssize_t nfs4_listxattr(struct dentry *dentry, char *buf, size_t buflen) | |
4419 | { | |
aa1870af | 4420 | size_t len = strlen(XATTR_NAME_NFSV4_ACL) + 1; |
6b3b5496 | 4421 | |
096455a2 BF |
4422 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
4423 | return 0; | |
6b3b5496 BF |
4424 | if (buf && buflen < len) |
4425 | return -ERANGE; | |
4426 | if (buf) | |
aa1870af BF |
4427 | memcpy(buf, XATTR_NAME_NFSV4_ACL, len); |
4428 | return len; | |
6b3b5496 BF |
4429 | } |
4430 | ||
69aaaae1 TM |
4431 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
4432 | { | |
4433 | if (!((fattr->valid & NFS_ATTR_FATTR_FILEID) && | |
4434 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
4435 | (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL))) | |
4436 | return; | |
4437 | ||
4438 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
4439 | NFS_ATTR_FATTR_NLINK; | |
4440 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; | |
4441 | fattr->nlink = 2; | |
4442 | } | |
4443 | ||
56659e99 | 4444 | int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, |
7aaa0b3b | 4445 | struct nfs4_fs_locations *fs_locations, struct page *page) |
683b57b4 TM |
4446 | { |
4447 | struct nfs_server *server = NFS_SERVER(dir); | |
4448 | u32 bitmask[2] = { | |
361e624f MN |
4449 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
4450 | [1] = FATTR4_WORD1_MOUNTED_ON_FILEID, | |
683b57b4 TM |
4451 | }; |
4452 | struct nfs4_fs_locations_arg args = { | |
4453 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 4454 | .name = name, |
683b57b4 TM |
4455 | .page = page, |
4456 | .bitmask = bitmask, | |
4457 | }; | |
22958463 BH |
4458 | struct nfs4_fs_locations_res res = { |
4459 | .fs_locations = fs_locations, | |
4460 | }; | |
683b57b4 TM |
4461 | struct rpc_message msg = { |
4462 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
4463 | .rpc_argp = &args, | |
22958463 | 4464 | .rpc_resp = &res, |
683b57b4 TM |
4465 | }; |
4466 | int status; | |
4467 | ||
3110ff80 | 4468 | dprintk("%s: start\n", __func__); |
c228fd3a | 4469 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 4470 | fs_locations->server = server; |
830b8e33 | 4471 | fs_locations->nlocations = 0; |
cccef3b9 | 4472 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
69aaaae1 | 4473 | nfs_fixup_referral_attributes(&fs_locations->fattr); |
3110ff80 | 4474 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
4475 | return status; |
4476 | } | |
4477 | ||
557134a3 | 4478 | #ifdef CONFIG_NFS_V4_1 |
99fe60d0 BH |
4479 | /* |
4480 | * nfs4_proc_exchange_id() | |
4481 | * | |
4482 | * Since the clientid has expired, all compounds using sessions | |
4483 | * associated with the stale clientid will be returning | |
4484 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
4485 | * be in some phase of session reset. | |
4486 | */ | |
4d643d1d | 4487 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
4488 | { |
4489 | nfs4_verifier verifier; | |
4490 | struct nfs41_exchange_id_args args = { | |
4491 | .client = clp, | |
4492 | .flags = clp->cl_exchange_flags, | |
4493 | }; | |
4494 | struct nfs41_exchange_id_res res = { | |
4495 | .client = clp, | |
4496 | }; | |
4497 | int status; | |
4498 | struct rpc_message msg = { | |
4499 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
4500 | .rpc_argp = &args, | |
4501 | .rpc_resp = &res, | |
4502 | .rpc_cred = cred, | |
4503 | }; | |
4504 | __be32 *p; | |
4505 | ||
4506 | dprintk("--> %s\n", __func__); | |
4507 | BUG_ON(clp == NULL); | |
a7b72103 | 4508 | |
7b183d0d AB |
4509 | /* Remove server-only flags */ |
4510 | args.flags &= ~EXCHGID4_FLAG_CONFIRMED_R; | |
4511 | ||
99fe60d0 BH |
4512 | p = (u32 *)verifier.data; |
4513 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); | |
4514 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
4515 | args.verifier = &verifier; | |
4516 | ||
4517 | while (1) { | |
4518 | args.id_len = scnprintf(args.id, sizeof(args.id), | |
4519 | "%s/%s %u", | |
4520 | clp->cl_ipaddr, | |
4521 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4522 | RPC_DISPLAY_ADDR), | |
4523 | clp->cl_id_uniquifier); | |
4524 | ||
4525 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
4526 | ||
180b62a3 | 4527 | if (status != -NFS4ERR_CLID_INUSE) |
99fe60d0 BH |
4528 | break; |
4529 | ||
4530 | if (signalled()) | |
4531 | break; | |
4532 | ||
4533 | if (++clp->cl_id_uniquifier == 0) | |
4534 | break; | |
4535 | } | |
4536 | ||
4537 | dprintk("<-- %s status= %d\n", __func__, status); | |
4538 | return status; | |
4539 | } | |
4540 | ||
2050f0cc AA |
4541 | struct nfs4_get_lease_time_data { |
4542 | struct nfs4_get_lease_time_args *args; | |
4543 | struct nfs4_get_lease_time_res *res; | |
4544 | struct nfs_client *clp; | |
4545 | }; | |
4546 | ||
4547 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
4548 | void *calldata) | |
4549 | { | |
4550 | int ret; | |
4551 | struct nfs4_get_lease_time_data *data = | |
4552 | (struct nfs4_get_lease_time_data *)calldata; | |
4553 | ||
4554 | dprintk("--> %s\n", __func__); | |
689cf5c1 | 4555 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
2050f0cc AA |
4556 | /* just setup sequence, do not trigger session recovery |
4557 | since we're invoked within one */ | |
4558 | ret = nfs41_setup_sequence(data->clp->cl_session, | |
689cf5c1 AB |
4559 | &data->args->la_seq_args, |
4560 | &data->res->lr_seq_res, 0, task); | |
2050f0cc AA |
4561 | |
4562 | BUG_ON(ret == -EAGAIN); | |
4563 | rpc_call_start(task); | |
4564 | dprintk("<-- %s\n", __func__); | |
4565 | } | |
4566 | ||
4567 | /* | |
4568 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
4569 | * from sequence operation or clientid errors. | |
4570 | */ | |
4571 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
4572 | { | |
4573 | struct nfs4_get_lease_time_data *data = | |
4574 | (struct nfs4_get_lease_time_data *)calldata; | |
4575 | ||
4576 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
4577 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
4578 | return; | |
2050f0cc AA |
4579 | switch (task->tk_status) { |
4580 | case -NFS4ERR_DELAY: | |
4581 | case -NFS4ERR_GRACE: | |
4582 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
4583 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
4584 | task->tk_status = 0; | |
0110ee15 | 4585 | nfs_restart_rpc(task, data->clp); |
2050f0cc AA |
4586 | return; |
4587 | } | |
2050f0cc AA |
4588 | dprintk("<-- %s\n", __func__); |
4589 | } | |
4590 | ||
4591 | struct rpc_call_ops nfs4_get_lease_time_ops = { | |
4592 | .rpc_call_prepare = nfs4_get_lease_time_prepare, | |
4593 | .rpc_call_done = nfs4_get_lease_time_done, | |
4594 | }; | |
4595 | ||
4596 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
4597 | { | |
4598 | struct rpc_task *task; | |
4599 | struct nfs4_get_lease_time_args args; | |
4600 | struct nfs4_get_lease_time_res res = { | |
4601 | .lr_fsinfo = fsinfo, | |
4602 | }; | |
4603 | struct nfs4_get_lease_time_data data = { | |
4604 | .args = &args, | |
4605 | .res = &res, | |
4606 | .clp = clp, | |
4607 | }; | |
4608 | struct rpc_message msg = { | |
4609 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
4610 | .rpc_argp = &args, | |
4611 | .rpc_resp = &res, | |
4612 | }; | |
4613 | struct rpc_task_setup task_setup = { | |
4614 | .rpc_client = clp->cl_rpcclient, | |
4615 | .rpc_message = &msg, | |
4616 | .callback_ops = &nfs4_get_lease_time_ops, | |
4617 | .callback_data = &data | |
4618 | }; | |
4619 | int status; | |
4620 | ||
2050f0cc AA |
4621 | dprintk("--> %s\n", __func__); |
4622 | task = rpc_run_task(&task_setup); | |
4623 | ||
4624 | if (IS_ERR(task)) | |
4625 | status = PTR_ERR(task); | |
4626 | else { | |
4627 | status = task->tk_status; | |
4628 | rpc_put_task(task); | |
4629 | } | |
4630 | dprintk("<-- %s return %d\n", __func__, status); | |
4631 | ||
4632 | return status; | |
4633 | } | |
4634 | ||
b73dafa7 RL |
4635 | /* |
4636 | * Reset a slot table | |
4637 | */ | |
104aeba4 AA |
4638 | static int nfs4_reset_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs, |
4639 | int ivalue) | |
ac72b7b3 | 4640 | { |
104aeba4 | 4641 | struct nfs4_slot *new = NULL; |
b73dafa7 | 4642 | int i; |
ac72b7b3 AA |
4643 | int ret = 0; |
4644 | ||
104aeba4 AA |
4645 | dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__, |
4646 | max_reqs, tbl->max_slots); | |
ac72b7b3 | 4647 | |
104aeba4 AA |
4648 | /* Does the newly negotiated max_reqs match the existing slot table? */ |
4649 | if (max_reqs != tbl->max_slots) { | |
4650 | ret = -ENOMEM; | |
4651 | new = kmalloc(max_reqs * sizeof(struct nfs4_slot), | |
8535b2be | 4652 | GFP_NOFS); |
104aeba4 AA |
4653 | if (!new) |
4654 | goto out; | |
4655 | ret = 0; | |
4656 | kfree(tbl->slots); | |
ac72b7b3 AA |
4657 | } |
4658 | spin_lock(&tbl->slot_tbl_lock); | |
104aeba4 AA |
4659 | if (new) { |
4660 | tbl->slots = new; | |
4661 | tbl->max_slots = max_reqs; | |
4662 | } | |
4663 | for (i = 0; i < tbl->max_slots; ++i) | |
b73dafa7 | 4664 | tbl->slots[i].seq_nr = ivalue; |
ac72b7b3 AA |
4665 | spin_unlock(&tbl->slot_tbl_lock); |
4666 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
4667 | tbl, tbl->slots, tbl->max_slots); | |
4668 | out: | |
4669 | dprintk("<-- %s: return %d\n", __func__, ret); | |
4670 | return ret; | |
4671 | } | |
4672 | ||
b73dafa7 RL |
4673 | /* |
4674 | * Reset the forechannel and backchannel slot tables | |
4675 | */ | |
4676 | static int nfs4_reset_slot_tables(struct nfs4_session *session) | |
4677 | { | |
4678 | int status; | |
4679 | ||
4680 | status = nfs4_reset_slot_table(&session->fc_slot_table, | |
104aeba4 | 4681 | session->fc_attrs.max_reqs, 1); |
f8625a6a RL |
4682 | if (status) |
4683 | return status; | |
4684 | ||
4685 | status = nfs4_reset_slot_table(&session->bc_slot_table, | |
104aeba4 | 4686 | session->bc_attrs.max_reqs, 0); |
b73dafa7 RL |
4687 | return status; |
4688 | } | |
4689 | ||
f8625a6a RL |
4690 | /* Destroy the slot table */ |
4691 | static void nfs4_destroy_slot_tables(struct nfs4_session *session) | |
4692 | { | |
4693 | if (session->fc_slot_table.slots != NULL) { | |
4694 | kfree(session->fc_slot_table.slots); | |
4695 | session->fc_slot_table.slots = NULL; | |
4696 | } | |
4697 | if (session->bc_slot_table.slots != NULL) { | |
4698 | kfree(session->bc_slot_table.slots); | |
4699 | session->bc_slot_table.slots = NULL; | |
4700 | } | |
4701 | return; | |
4702 | } | |
4703 | ||
fc931582 AA |
4704 | /* |
4705 | * Initialize slot table | |
4706 | */ | |
050047ce RL |
4707 | static int nfs4_init_slot_table(struct nfs4_slot_table *tbl, |
4708 | int max_slots, int ivalue) | |
fc931582 | 4709 | { |
fc931582 AA |
4710 | struct nfs4_slot *slot; |
4711 | int ret = -ENOMEM; | |
4712 | ||
4713 | BUG_ON(max_slots > NFS4_MAX_SLOT_TABLE); | |
4714 | ||
050047ce | 4715 | dprintk("--> %s: max_reqs=%u\n", __func__, max_slots); |
fc931582 | 4716 | |
8535b2be | 4717 | slot = kcalloc(max_slots, sizeof(struct nfs4_slot), GFP_NOFS); |
fc931582 AA |
4718 | if (!slot) |
4719 | goto out; | |
fc931582 AA |
4720 | ret = 0; |
4721 | ||
4722 | spin_lock(&tbl->slot_tbl_lock); | |
fc931582 AA |
4723 | tbl->max_slots = max_slots; |
4724 | tbl->slots = slot; | |
4725 | tbl->highest_used_slotid = -1; /* no slot is currently used */ | |
4726 | spin_unlock(&tbl->slot_tbl_lock); | |
4727 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
4728 | tbl, tbl->slots, tbl->max_slots); | |
4729 | out: | |
4730 | dprintk("<-- %s: return %d\n", __func__, ret); | |
4731 | return ret; | |
fc931582 AA |
4732 | } |
4733 | ||
050047ce RL |
4734 | /* |
4735 | * Initialize the forechannel and backchannel tables | |
4736 | */ | |
4737 | static int nfs4_init_slot_tables(struct nfs4_session *session) | |
4738 | { | |
f26468fb TM |
4739 | struct nfs4_slot_table *tbl; |
4740 | int status = 0; | |
050047ce | 4741 | |
f26468fb TM |
4742 | tbl = &session->fc_slot_table; |
4743 | if (tbl->slots == NULL) { | |
4744 | status = nfs4_init_slot_table(tbl, | |
4745 | session->fc_attrs.max_reqs, 1); | |
4746 | if (status) | |
4747 | return status; | |
4748 | } | |
050047ce | 4749 | |
f26468fb TM |
4750 | tbl = &session->bc_slot_table; |
4751 | if (tbl->slots == NULL) { | |
4752 | status = nfs4_init_slot_table(tbl, | |
4753 | session->bc_attrs.max_reqs, 0); | |
4754 | if (status) | |
4755 | nfs4_destroy_slot_tables(session); | |
4756 | } | |
f8625a6a RL |
4757 | |
4758 | return status; | |
557134a3 AA |
4759 | } |
4760 | ||
4761 | struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) | |
4762 | { | |
4763 | struct nfs4_session *session; | |
4764 | struct nfs4_slot_table *tbl; | |
4765 | ||
8535b2be | 4766 | session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); |
557134a3 AA |
4767 | if (!session) |
4768 | return NULL; | |
76db6d95 | 4769 | |
ea028ac9 | 4770 | init_completion(&session->complete); |
76db6d95 | 4771 | |
557134a3 | 4772 | tbl = &session->fc_slot_table; |
9dfdf404 | 4773 | tbl->highest_used_slotid = -1; |
557134a3 | 4774 | spin_lock_init(&tbl->slot_tbl_lock); |
689cf5c1 | 4775 | rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); |
f8625a6a RL |
4776 | |
4777 | tbl = &session->bc_slot_table; | |
9dfdf404 | 4778 | tbl->highest_used_slotid = -1; |
f8625a6a RL |
4779 | spin_lock_init(&tbl->slot_tbl_lock); |
4780 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); | |
4781 | ||
1055d76d TM |
4782 | session->session_state = 1<<NFS4_SESSION_INITING; |
4783 | ||
557134a3 AA |
4784 | session->clp = clp; |
4785 | return session; | |
4786 | } | |
4787 | ||
4788 | void nfs4_destroy_session(struct nfs4_session *session) | |
4789 | { | |
5a0ffe54 AA |
4790 | nfs4_proc_destroy_session(session); |
4791 | dprintk("%s Destroy backchannel for xprt %p\n", | |
4792 | __func__, session->clp->cl_rpcclient->cl_xprt); | |
4793 | xprt_destroy_backchannel(session->clp->cl_rpcclient->cl_xprt, | |
4794 | NFS41_BC_MIN_CALLBACKS); | |
f8625a6a | 4795 | nfs4_destroy_slot_tables(session); |
557134a3 AA |
4796 | kfree(session); |
4797 | } | |
4798 | ||
fc931582 AA |
4799 | /* |
4800 | * Initialize the values to be used by the client in CREATE_SESSION | |
4801 | * If nfs4_init_session set the fore channel request and response sizes, | |
4802 | * use them. | |
4803 | * | |
4804 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
4805 | * always set csa_cachethis to FALSE because the current implementation | |
4806 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
4807 | */ | |
4808 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
4809 | { | |
4810 | struct nfs4_session *session = args->client->cl_session; | |
4811 | unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz, | |
4812 | mxresp_sz = session->fc_attrs.max_resp_sz; | |
4813 | ||
4814 | if (mxrqst_sz == 0) | |
4815 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
4816 | if (mxresp_sz == 0) | |
4817 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
4818 | /* Fore channel attributes */ | |
4819 | args->fc_attrs.headerpadsz = 0; | |
4820 | args->fc_attrs.max_rqst_sz = mxrqst_sz; | |
4821 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 AA |
4822 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
4823 | args->fc_attrs.max_reqs = session->clp->cl_rpcclient->cl_xprt->max_reqs; | |
4824 | ||
4825 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 4826 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
4827 | __func__, |
4828 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 4829 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
4830 | |
4831 | /* Back channel attributes */ | |
4832 | args->bc_attrs.headerpadsz = 0; | |
4833 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; | |
4834 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
4835 | args->bc_attrs.max_resp_sz_cached = 0; | |
4836 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
4837 | args->bc_attrs.max_reqs = 1; | |
4838 | ||
4839 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
4840 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
4841 | __func__, | |
4842 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
4843 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
4844 | args->bc_attrs.max_reqs); | |
4845 | } | |
4846 | ||
43c2e885 | 4847 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 4848 | { |
43c2e885 BF |
4849 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
4850 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
4851 | ||
4852 | if (rcvd->headerpadsz > sent->headerpadsz) | |
4853 | return -EINVAL; | |
4854 | if (rcvd->max_resp_sz > sent->max_resp_sz) | |
4855 | return -EINVAL; | |
4856 | /* | |
4857 | * Our requested max_ops is the minimum we need; we're not | |
4858 | * prepared to break up compounds into smaller pieces than that. | |
4859 | * So, no point even trying to continue if the server won't | |
4860 | * cooperate: | |
4861 | */ | |
4862 | if (rcvd->max_ops < sent->max_ops) | |
4863 | return -EINVAL; | |
4864 | if (rcvd->max_reqs == 0) | |
4865 | return -EINVAL; | |
4866 | return 0; | |
8d35301d AA |
4867 | } |
4868 | ||
43c2e885 BF |
4869 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
4870 | { | |
4871 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
4872 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 4873 | |
43c2e885 BF |
4874 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
4875 | return -EINVAL; | |
4876 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
4877 | return -EINVAL; | |
4878 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
4879 | return -EINVAL; | |
4880 | /* These would render the backchannel useless: */ | |
4881 | if (rcvd->max_ops == 0) | |
4882 | return -EINVAL; | |
4883 | if (rcvd->max_reqs == 0) | |
4884 | return -EINVAL; | |
4885 | return 0; | |
4886 | } | |
8d35301d | 4887 | |
8d35301d AA |
4888 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
4889 | struct nfs4_session *session) | |
4890 | { | |
43c2e885 | 4891 | int ret; |
8d35301d | 4892 | |
43c2e885 BF |
4893 | ret = nfs4_verify_fore_channel_attrs(args, session); |
4894 | if (ret) | |
4895 | return ret; | |
4896 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
4897 | } |
4898 | ||
fc931582 AA |
4899 | static int _nfs4_proc_create_session(struct nfs_client *clp) |
4900 | { | |
4901 | struct nfs4_session *session = clp->cl_session; | |
4902 | struct nfs41_create_session_args args = { | |
4903 | .client = clp, | |
4904 | .cb_program = NFS4_CALLBACK, | |
4905 | }; | |
4906 | struct nfs41_create_session_res res = { | |
4907 | .client = clp, | |
4908 | }; | |
4909 | struct rpc_message msg = { | |
4910 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
4911 | .rpc_argp = &args, | |
4912 | .rpc_resp = &res, | |
4913 | }; | |
4914 | int status; | |
4915 | ||
4916 | nfs4_init_channel_attrs(&args); | |
0f91421e | 4917 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 AA |
4918 | |
4919 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, 0); | |
4920 | ||
8d35301d AA |
4921 | if (!status) |
4922 | /* Verify the session's negotiated channel_attrs values */ | |
4923 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
4924 | if (!status) { |
4925 | /* Increment the clientid slot sequence id */ | |
4926 | clp->cl_seqid++; | |
4927 | } | |
4928 | ||
4929 | return status; | |
4930 | } | |
4931 | ||
4932 | /* | |
4933 | * Issues a CREATE_SESSION operation to the server. | |
4934 | * It is the responsibility of the caller to verify the session is | |
4935 | * expired before calling this routine. | |
4936 | */ | |
f26468fb | 4937 | int nfs4_proc_create_session(struct nfs_client *clp) |
fc931582 AA |
4938 | { |
4939 | int status; | |
4940 | unsigned *ptr; | |
fc931582 AA |
4941 | struct nfs4_session *session = clp->cl_session; |
4942 | ||
4943 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
4944 | ||
4945 | status = _nfs4_proc_create_session(clp); | |
4946 | if (status) | |
4947 | goto out; | |
4948 | ||
f26468fb TM |
4949 | /* Init and reset the fore channel */ |
4950 | status = nfs4_init_slot_tables(session); | |
4951 | dprintk("slot table initialization returned %d\n", status); | |
4952 | if (status) | |
4953 | goto out; | |
4954 | status = nfs4_reset_slot_tables(session); | |
4955 | dprintk("slot table reset returned %d\n", status); | |
fc931582 AA |
4956 | if (status) |
4957 | goto out; | |
4958 | ||
4959 | ptr = (unsigned *)&session->sess_id.data[0]; | |
4960 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
4961 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
4962 | out: |
4963 | dprintk("<-- %s\n", __func__); | |
4964 | return status; | |
4965 | } | |
4966 | ||
0f3e66c6 AA |
4967 | /* |
4968 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
4969 | * The caller must serialize access to this routine. | |
4970 | */ | |
4971 | int nfs4_proc_destroy_session(struct nfs4_session *session) | |
4972 | { | |
4973 | int status = 0; | |
4974 | struct rpc_message msg; | |
4975 | ||
4976 | dprintk("--> nfs4_proc_destroy_session\n"); | |
4977 | ||
4978 | /* session is still being setup */ | |
4979 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
4980 | return status; | |
4981 | ||
4982 | msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION]; | |
4983 | msg.rpc_argp = session; | |
4984 | msg.rpc_resp = NULL; | |
4985 | msg.rpc_cred = NULL; | |
4986 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, 0); | |
4987 | ||
4988 | if (status) | |
4989 | printk(KERN_WARNING | |
4990 | "Got error %d from the server on DESTROY_SESSION. " | |
4991 | "Session has been destroyed regardless...\n", status); | |
4992 | ||
4993 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
4994 | return status; | |
4995 | } | |
4996 | ||
fccba804 TM |
4997 | int nfs4_init_session(struct nfs_server *server) |
4998 | { | |
4999 | struct nfs_client *clp = server->nfs_client; | |
2449ea2e | 5000 | struct nfs4_session *session; |
68bf05ef | 5001 | unsigned int rsize, wsize; |
fccba804 TM |
5002 | int ret; |
5003 | ||
5004 | if (!nfs4_has_session(clp)) | |
5005 | return 0; | |
5006 | ||
1055d76d TM |
5007 | session = clp->cl_session; |
5008 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5009 | return 0; | |
5010 | ||
68bf05ef AA |
5011 | rsize = server->rsize; |
5012 | if (rsize == 0) | |
5013 | rsize = NFS_MAX_FILE_IO_SIZE; | |
5014 | wsize = server->wsize; | |
5015 | if (wsize == 0) | |
5016 | wsize = NFS_MAX_FILE_IO_SIZE; | |
5017 | ||
68bf05ef AA |
5018 | session->fc_attrs.max_rqst_sz = wsize + nfs41_maxwrite_overhead; |
5019 | session->fc_attrs.max_resp_sz = rsize + nfs41_maxread_overhead; | |
2449ea2e | 5020 | |
fccba804 TM |
5021 | ret = nfs4_recover_expired_lease(server); |
5022 | if (!ret) | |
5023 | ret = nfs4_check_client_ready(clp); | |
5024 | return ret; | |
5025 | } | |
5026 | ||
fc01cea9 AA |
5027 | /* |
5028 | * Renew the cl_session lease. | |
5029 | */ | |
d5f8d3fe TM |
5030 | struct nfs4_sequence_data { |
5031 | struct nfs_client *clp; | |
5032 | struct nfs4_sequence_args args; | |
5033 | struct nfs4_sequence_res res; | |
5034 | }; | |
5035 | ||
dc96aef9 AB |
5036 | static void nfs41_sequence_release(void *data) |
5037 | { | |
d5f8d3fe TM |
5038 | struct nfs4_sequence_data *calldata = data; |
5039 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5040 | |
7135840f AB |
5041 | if (atomic_read(&clp->cl_count) > 1) |
5042 | nfs4_schedule_state_renewal(clp); | |
5043 | nfs_put_client(clp); | |
d5f8d3fe | 5044 | kfree(calldata); |
dc96aef9 AB |
5045 | } |
5046 | ||
aa5190d0 TM |
5047 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5048 | { | |
5049 | switch(task->tk_status) { | |
5050 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5051 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5052 | return -EAGAIN; | |
5053 | default: | |
5054 | nfs4_schedule_state_recovery(clp); | |
5055 | } | |
5056 | return 0; | |
5057 | } | |
5058 | ||
dc96aef9 | 5059 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 5060 | { |
d5f8d3fe TM |
5061 | struct nfs4_sequence_data *calldata = data; |
5062 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 5063 | |
14516c3a TM |
5064 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
5065 | return; | |
fc01cea9 AA |
5066 | |
5067 | if (task->tk_status < 0) { | |
5068 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
5069 | if (atomic_read(&clp->cl_count) == 1) |
5070 | goto out; | |
fc01cea9 | 5071 | |
aa5190d0 TM |
5072 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
5073 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
5074 | return; |
5075 | } | |
5076 | } | |
fc01cea9 | 5077 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 5078 | out: |
fc01cea9 AA |
5079 | dprintk("<-- %s\n", __func__); |
5080 | } | |
5081 | ||
5082 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
5083 | { | |
d5f8d3fe TM |
5084 | struct nfs4_sequence_data *calldata = data; |
5085 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
5086 | struct nfs4_sequence_args *args; |
5087 | struct nfs4_sequence_res *res; | |
5088 | ||
fc01cea9 AA |
5089 | args = task->tk_msg.rpc_argp; |
5090 | res = task->tk_msg.rpc_resp; | |
5091 | ||
035168ab | 5092 | if (nfs41_setup_sequence(clp->cl_session, args, res, 0, task)) |
fc01cea9 AA |
5093 | return; |
5094 | rpc_call_start(task); | |
5095 | } | |
5096 | ||
5097 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
5098 | .rpc_call_done = nfs41_sequence_call_done, | |
5099 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 5100 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
5101 | }; |
5102 | ||
71ac6da9 | 5103 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) |
fc01cea9 | 5104 | { |
d5f8d3fe | 5105 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
5106 | struct rpc_message msg = { |
5107 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
5108 | .rpc_cred = cred, | |
5109 | }; | |
71ac6da9 TM |
5110 | struct rpc_task_setup task_setup_data = { |
5111 | .rpc_client = clp->cl_rpcclient, | |
5112 | .rpc_message = &msg, | |
5113 | .callback_ops = &nfs41_sequence_ops, | |
5114 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, | |
5115 | }; | |
fc01cea9 | 5116 | |
7135840f | 5117 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 5118 | return ERR_PTR(-EIO); |
dfb4f309 | 5119 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 5120 | if (calldata == NULL) { |
7135840f | 5121 | nfs_put_client(clp); |
71ac6da9 | 5122 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 5123 | } |
d5f8d3fe TM |
5124 | msg.rpc_argp = &calldata->args; |
5125 | msg.rpc_resp = &calldata->res; | |
5126 | calldata->clp = clp; | |
71ac6da9 | 5127 | task_setup_data.callback_data = calldata; |
fc01cea9 | 5128 | |
71ac6da9 TM |
5129 | return rpc_run_task(&task_setup_data); |
5130 | } | |
5131 | ||
5132 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5133 | { | |
5134 | struct rpc_task *task; | |
5135 | int ret = 0; | |
5136 | ||
5137 | task = _nfs41_proc_sequence(clp, cred); | |
5138 | if (IS_ERR(task)) | |
5139 | ret = PTR_ERR(task); | |
5140 | else | |
5141 | rpc_put_task(task); | |
5142 | dprintk("<-- %s status=%d\n", __func__, ret); | |
5143 | return ret; | |
5144 | } | |
5145 | ||
5146 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5147 | { | |
5148 | struct rpc_task *task; | |
5149 | int ret; | |
5150 | ||
5151 | task = _nfs41_proc_sequence(clp, cred); | |
5152 | if (IS_ERR(task)) { | |
5153 | ret = PTR_ERR(task); | |
5154 | goto out; | |
5155 | } | |
5156 | ret = rpc_wait_for_completion_task(task); | |
5157 | if (!ret) | |
5158 | ret = task->tk_status; | |
5159 | rpc_put_task(task); | |
5160 | out: | |
5161 | dprintk("<-- %s status=%d\n", __func__, ret); | |
5162 | return ret; | |
fc01cea9 AA |
5163 | } |
5164 | ||
fce5c838 RL |
5165 | struct nfs4_reclaim_complete_data { |
5166 | struct nfs_client *clp; | |
5167 | struct nfs41_reclaim_complete_args arg; | |
5168 | struct nfs41_reclaim_complete_res res; | |
5169 | }; | |
5170 | ||
5171 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
5172 | { | |
5173 | struct nfs4_reclaim_complete_data *calldata = data; | |
5174 | ||
b257957e | 5175 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
035168ab TM |
5176 | if (nfs41_setup_sequence(calldata->clp->cl_session, |
5177 | &calldata->arg.seq_args, | |
fce5c838 RL |
5178 | &calldata->res.seq_res, 0, task)) |
5179 | return; | |
5180 | ||
5181 | rpc_call_start(task); | |
5182 | } | |
5183 | ||
aa5190d0 TM |
5184 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5185 | { | |
5186 | switch(task->tk_status) { | |
5187 | case 0: | |
5188 | case -NFS4ERR_COMPLETE_ALREADY: | |
5189 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
5190 | break; | |
5191 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5192 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5193 | return -EAGAIN; | |
5194 | default: | |
5195 | nfs4_schedule_state_recovery(clp); | |
5196 | } | |
5197 | return 0; | |
5198 | } | |
5199 | ||
fce5c838 RL |
5200 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
5201 | { | |
5202 | struct nfs4_reclaim_complete_data *calldata = data; | |
5203 | struct nfs_client *clp = calldata->clp; | |
5204 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
5205 | ||
5206 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5207 | if (!nfs41_sequence_done(task, res)) |
5208 | return; | |
fce5c838 | 5209 | |
aa5190d0 TM |
5210 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
5211 | rpc_restart_call_prepare(task); | |
5212 | return; | |
5213 | } | |
fce5c838 RL |
5214 | dprintk("<-- %s\n", __func__); |
5215 | } | |
5216 | ||
5217 | static void nfs4_free_reclaim_complete_data(void *data) | |
5218 | { | |
5219 | struct nfs4_reclaim_complete_data *calldata = data; | |
5220 | ||
5221 | kfree(calldata); | |
5222 | } | |
5223 | ||
5224 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
5225 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
5226 | .rpc_call_done = nfs4_reclaim_complete_done, | |
5227 | .rpc_release = nfs4_free_reclaim_complete_data, | |
5228 | }; | |
5229 | ||
5230 | /* | |
5231 | * Issue a global reclaim complete. | |
5232 | */ | |
5233 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
5234 | { | |
5235 | struct nfs4_reclaim_complete_data *calldata; | |
5236 | struct rpc_task *task; | |
5237 | struct rpc_message msg = { | |
5238 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
5239 | }; | |
5240 | struct rpc_task_setup task_setup_data = { | |
5241 | .rpc_client = clp->cl_rpcclient, | |
5242 | .rpc_message = &msg, | |
5243 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
5244 | .flags = RPC_TASK_ASYNC, | |
5245 | }; | |
5246 | int status = -ENOMEM; | |
5247 | ||
5248 | dprintk("--> %s\n", __func__); | |
8535b2be | 5249 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
5250 | if (calldata == NULL) |
5251 | goto out; | |
5252 | calldata->clp = clp; | |
5253 | calldata->arg.one_fs = 0; | |
fce5c838 RL |
5254 | |
5255 | msg.rpc_argp = &calldata->arg; | |
5256 | msg.rpc_resp = &calldata->res; | |
5257 | task_setup_data.callback_data = calldata; | |
5258 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 5259 | if (IS_ERR(task)) { |
fce5c838 | 5260 | status = PTR_ERR(task); |
acf82b85 DC |
5261 | goto out; |
5262 | } | |
fce5c838 | 5263 | rpc_put_task(task); |
acf82b85 | 5264 | return 0; |
fce5c838 RL |
5265 | out: |
5266 | dprintk("<-- %s status=%d\n", __func__, status); | |
5267 | return status; | |
5268 | } | |
b1f69b75 AA |
5269 | |
5270 | static void | |
5271 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
5272 | { | |
5273 | struct nfs4_layoutget *lgp = calldata; | |
5274 | struct inode *ino = lgp->args.inode; | |
5275 | struct nfs_server *server = NFS_SERVER(ino); | |
5276 | ||
5277 | dprintk("--> %s\n", __func__); | |
5278 | if (nfs4_setup_sequence(server, &lgp->args.seq_args, | |
5279 | &lgp->res.seq_res, 0, task)) | |
5280 | return; | |
5281 | rpc_call_start(task); | |
5282 | } | |
5283 | ||
5284 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
5285 | { | |
5286 | struct nfs4_layoutget *lgp = calldata; | |
5287 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5288 | ||
5289 | dprintk("--> %s\n", __func__); | |
5290 | ||
5291 | if (!nfs4_sequence_done(task, &lgp->res.seq_res)) | |
5292 | return; | |
5293 | ||
5294 | switch (task->tk_status) { | |
5295 | case 0: | |
5296 | break; | |
5297 | case -NFS4ERR_LAYOUTTRYLATER: | |
5298 | case -NFS4ERR_RECALLCONFLICT: | |
5299 | task->tk_status = -NFS4ERR_DELAY; | |
5300 | /* Fall through */ | |
5301 | default: | |
5302 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
5303 | rpc_restart_call_prepare(task); | |
5304 | return; | |
5305 | } | |
5306 | } | |
5307 | lgp->status = task->tk_status; | |
5308 | dprintk("<-- %s\n", __func__); | |
5309 | } | |
5310 | ||
5311 | static void nfs4_layoutget_release(void *calldata) | |
5312 | { | |
5313 | struct nfs4_layoutget *lgp = calldata; | |
5314 | ||
5315 | dprintk("--> %s\n", __func__); | |
5316 | put_layout_hdr(lgp->args.inode); | |
5317 | if (lgp->res.layout.buf != NULL) | |
5318 | free_page((unsigned long) lgp->res.layout.buf); | |
5319 | put_nfs_open_context(lgp->args.ctx); | |
5320 | kfree(calldata); | |
5321 | dprintk("<-- %s\n", __func__); | |
5322 | } | |
5323 | ||
5324 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
5325 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
5326 | .rpc_call_done = nfs4_layoutget_done, | |
5327 | .rpc_release = nfs4_layoutget_release, | |
5328 | }; | |
5329 | ||
5330 | int nfs4_proc_layoutget(struct nfs4_layoutget *lgp) | |
5331 | { | |
5332 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5333 | struct rpc_task *task; | |
5334 | struct rpc_message msg = { | |
5335 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
5336 | .rpc_argp = &lgp->args, | |
5337 | .rpc_resp = &lgp->res, | |
5338 | }; | |
5339 | struct rpc_task_setup task_setup_data = { | |
5340 | .rpc_client = server->client, | |
5341 | .rpc_message = &msg, | |
5342 | .callback_ops = &nfs4_layoutget_call_ops, | |
5343 | .callback_data = lgp, | |
5344 | .flags = RPC_TASK_ASYNC, | |
5345 | }; | |
5346 | int status = 0; | |
5347 | ||
5348 | dprintk("--> %s\n", __func__); | |
5349 | ||
5350 | lgp->res.layout.buf = (void *)__get_free_page(GFP_NOFS); | |
5351 | if (lgp->res.layout.buf == NULL) { | |
5352 | nfs4_layoutget_release(lgp); | |
5353 | return -ENOMEM; | |
5354 | } | |
5355 | ||
5356 | lgp->res.seq_res.sr_slot = NULL; | |
5357 | task = rpc_run_task(&task_setup_data); | |
5358 | if (IS_ERR(task)) | |
5359 | return PTR_ERR(task); | |
5360 | status = nfs4_wait_for_completion_rpc_task(task); | |
5361 | if (status != 0) | |
5362 | goto out; | |
5363 | status = lgp->status; | |
5364 | if (status != 0) | |
5365 | goto out; | |
5366 | status = pnfs_layout_process(lgp); | |
5367 | out: | |
5368 | rpc_put_task(task); | |
5369 | dprintk("<-- %s status=%d\n", __func__, status); | |
5370 | return status; | |
5371 | } | |
5372 | ||
5373 | static int | |
5374 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
5375 | { | |
5376 | struct nfs4_getdeviceinfo_args args = { | |
5377 | .pdev = pdev, | |
5378 | }; | |
5379 | struct nfs4_getdeviceinfo_res res = { | |
5380 | .pdev = pdev, | |
5381 | }; | |
5382 | struct rpc_message msg = { | |
5383 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
5384 | .rpc_argp = &args, | |
5385 | .rpc_resp = &res, | |
5386 | }; | |
5387 | int status; | |
5388 | ||
5389 | dprintk("--> %s\n", __func__); | |
5390 | status = nfs4_call_sync(server, &msg, &args, &res, 0); | |
5391 | dprintk("<-- %s status=%d\n", __func__, status); | |
5392 | ||
5393 | return status; | |
5394 | } | |
5395 | ||
5396 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
5397 | { | |
5398 | struct nfs4_exception exception = { }; | |
5399 | int err; | |
5400 | ||
5401 | do { | |
5402 | err = nfs4_handle_exception(server, | |
5403 | _nfs4_proc_getdeviceinfo(server, pdev), | |
5404 | &exception); | |
5405 | } while (exception.retry); | |
5406 | return err; | |
5407 | } | |
5408 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
5409 | ||
557134a3 AA |
5410 | #endif /* CONFIG_NFS_V4_1 */ |
5411 | ||
591d71cb | 5412 | struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 5413 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 5414 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
5415 | .recover_open = nfs4_open_reclaim, |
5416 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 5417 | .establish_clid = nfs4_init_clientid, |
90a16617 | 5418 | .get_clid_cred = nfs4_get_setclientid_cred, |
1da177e4 LT |
5419 | }; |
5420 | ||
591d71cb AA |
5421 | #if defined(CONFIG_NFS_V4_1) |
5422 | struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { | |
5423 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, | |
5424 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
5425 | .recover_open = nfs4_open_reclaim, | |
5426 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 5427 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 5428 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 5429 | .reclaim_complete = nfs41_proc_reclaim_complete, |
591d71cb AA |
5430 | }; |
5431 | #endif /* CONFIG_NFS_V4_1 */ | |
5432 | ||
5433 | struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { | |
5434 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, | |
5435 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
5436 | .recover_open = nfs4_open_expired, | |
5437 | .recover_lock = nfs4_lock_expired, | |
5438 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 5439 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
5440 | }; |
5441 | ||
5442 | #if defined(CONFIG_NFS_V4_1) | |
5443 | struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { | |
7eff03ae | 5444 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 5445 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
1da177e4 LT |
5446 | .recover_open = nfs4_open_expired, |
5447 | .recover_lock = nfs4_lock_expired, | |
4d643d1d | 5448 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 5449 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 5450 | }; |
591d71cb | 5451 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 5452 | |
29fba38b BH |
5453 | struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
5454 | .sched_state_renewal = nfs4_proc_async_renew, | |
a7b72103 | 5455 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 5456 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
5457 | }; |
5458 | ||
5459 | #if defined(CONFIG_NFS_V4_1) | |
5460 | struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { | |
5461 | .sched_state_renewal = nfs41_proc_async_sequence, | |
a7b72103 | 5462 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 5463 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
5464 | }; |
5465 | #endif | |
5466 | ||
97dc1359 TM |
5467 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
5468 | .minor_version = 0, | |
5469 | .call_sync = _nfs4_call_sync, | |
e047a10c | 5470 | .validate_stateid = nfs4_validate_delegation_stateid, |
c48f4f35 TM |
5471 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
5472 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
5473 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
5474 | }; |
5475 | ||
5476 | #if defined(CONFIG_NFS_V4_1) | |
5477 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
5478 | .minor_version = 1, | |
5479 | .call_sync = _nfs4_call_sync_session, | |
e047a10c | 5480 | .validate_stateid = nfs41_validate_delegation_stateid, |
c48f4f35 TM |
5481 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
5482 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
5483 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
5484 | }; |
5485 | #endif | |
5486 | ||
97dc1359 TM |
5487 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
5488 | [0] = &nfs_v4_0_minor_ops, | |
5489 | #if defined(CONFIG_NFS_V4_1) | |
5490 | [1] = &nfs_v4_1_minor_ops, | |
5491 | #endif | |
5492 | }; | |
5493 | ||
92e1d5be | 5494 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
5495 | .permission = nfs_permission, |
5496 | .getattr = nfs_getattr, | |
5497 | .setattr = nfs_setattr, | |
5498 | .getxattr = nfs4_getxattr, | |
5499 | .setxattr = nfs4_setxattr, | |
5500 | .listxattr = nfs4_listxattr, | |
5501 | }; | |
5502 | ||
509de811 | 5503 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
5504 | .version = 4, /* protocol version */ |
5505 | .dentry_ops = &nfs4_dentry_operations, | |
5506 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 5507 | .file_inode_ops = &nfs4_file_inode_operations, |
1da177e4 LT |
5508 | .getroot = nfs4_proc_get_root, |
5509 | .getattr = nfs4_proc_getattr, | |
5510 | .setattr = nfs4_proc_setattr, | |
2b3de441 | 5511 | .lookupfh = nfs4_proc_lookupfh, |
1da177e4 LT |
5512 | .lookup = nfs4_proc_lookup, |
5513 | .access = nfs4_proc_access, | |
5514 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
5515 | .create = nfs4_proc_create, |
5516 | .remove = nfs4_proc_remove, | |
5517 | .unlink_setup = nfs4_proc_unlink_setup, | |
5518 | .unlink_done = nfs4_proc_unlink_done, | |
5519 | .rename = nfs4_proc_rename, | |
d3d4152a JL |
5520 | .rename_setup = nfs4_proc_rename_setup, |
5521 | .rename_done = nfs4_proc_rename_done, | |
1da177e4 LT |
5522 | .link = nfs4_proc_link, |
5523 | .symlink = nfs4_proc_symlink, | |
5524 | .mkdir = nfs4_proc_mkdir, | |
5525 | .rmdir = nfs4_proc_remove, | |
5526 | .readdir = nfs4_proc_readdir, | |
5527 | .mknod = nfs4_proc_mknod, | |
5528 | .statfs = nfs4_proc_statfs, | |
5529 | .fsinfo = nfs4_proc_fsinfo, | |
5530 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 5531 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
5532 | .decode_dirent = nfs4_decode_dirent, |
5533 | .read_setup = nfs4_proc_read_setup, | |
ec06c096 | 5534 | .read_done = nfs4_read_done, |
1da177e4 | 5535 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 5536 | .write_done = nfs4_write_done, |
1da177e4 | 5537 | .commit_setup = nfs4_proc_commit_setup, |
788e7a89 | 5538 | .commit_done = nfs4_commit_done, |
1da177e4 | 5539 | .lock = nfs4_proc_lock, |
e50a1c2e | 5540 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 5541 | .close_context = nfs4_close_context, |
2b484297 | 5542 | .open_context = nfs4_atomic_open, |
1da177e4 LT |
5543 | }; |
5544 | ||
5545 | /* | |
5546 | * Local variables: | |
5547 | * c-basic-offset: 8 | |
5548 | * End: | |
5549 | */ |