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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> |
64c2ce8b | 52 | #include <linux/xattr.h> |
1da177e4 | 53 | |
4ce79717 | 54 | #include "nfs4_fs.h" |
1da177e4 | 55 | #include "delegation.h" |
101070ca | 56 | #include "internal.h" |
006ea73e | 57 | #include "iostat.h" |
fc931582 | 58 | #include "callback.h" |
b1f69b75 | 59 | #include "pnfs.h" |
1da177e4 LT |
60 | |
61 | #define NFSDBG_FACILITY NFSDBG_PROC | |
62 | ||
2066fe89 | 63 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
64 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
65 | ||
a78cb57a TM |
66 | #define NFS4_MAX_LOOP_ON_RECOVER (10) |
67 | ||
cdd4e68b | 68 | struct nfs4_opendata; |
864472e9 | 69 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
b257957e | 70 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 71 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
9e33bed5 | 72 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); |
9936781d TM |
73 | static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr); |
74 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); | |
0ab64e0e TM |
75 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
76 | struct nfs_fattr *fattr, struct iattr *sattr, | |
77 | struct nfs4_state *state); | |
1da177e4 | 78 | |
1da177e4 | 79 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 80 | static int nfs4_map_errors(int err) |
1da177e4 | 81 | { |
52567b03 TM |
82 | if (err >= -1000) |
83 | return err; | |
84 | switch (err) { | |
85 | case -NFS4ERR_RESOURCE: | |
86 | return -EREMOTEIO; | |
87 | default: | |
1da177e4 | 88 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 89 | __func__, -err); |
52567b03 | 90 | break; |
1da177e4 | 91 | } |
52567b03 | 92 | return -EIO; |
1da177e4 LT |
93 | } |
94 | ||
95 | /* | |
96 | * This is our standard bitmap for GETATTR requests. | |
97 | */ | |
98 | const u32 nfs4_fattr_bitmap[2] = { | |
99 | FATTR4_WORD0_TYPE | |
100 | | FATTR4_WORD0_CHANGE | |
101 | | FATTR4_WORD0_SIZE | |
102 | | FATTR4_WORD0_FSID | |
103 | | FATTR4_WORD0_FILEID, | |
104 | FATTR4_WORD1_MODE | |
105 | | FATTR4_WORD1_NUMLINKS | |
106 | | FATTR4_WORD1_OWNER | |
107 | | FATTR4_WORD1_OWNER_GROUP | |
108 | | FATTR4_WORD1_RAWDEV | |
109 | | FATTR4_WORD1_SPACE_USED | |
110 | | FATTR4_WORD1_TIME_ACCESS | |
111 | | FATTR4_WORD1_TIME_METADATA | |
112 | | FATTR4_WORD1_TIME_MODIFY | |
113 | }; | |
114 | ||
115 | const u32 nfs4_statfs_bitmap[2] = { | |
116 | FATTR4_WORD0_FILES_AVAIL | |
117 | | FATTR4_WORD0_FILES_FREE | |
118 | | FATTR4_WORD0_FILES_TOTAL, | |
119 | FATTR4_WORD1_SPACE_AVAIL | |
120 | | FATTR4_WORD1_SPACE_FREE | |
121 | | FATTR4_WORD1_SPACE_TOTAL | |
122 | }; | |
123 | ||
4ce79717 | 124 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
125 | FATTR4_WORD0_MAXLINK |
126 | | FATTR4_WORD0_MAXNAME, | |
127 | 0 | |
128 | }; | |
129 | ||
130 | const u32 nfs4_fsinfo_bitmap[2] = { FATTR4_WORD0_MAXFILESIZE | |
131 | | FATTR4_WORD0_MAXREAD | |
132 | | FATTR4_WORD0_MAXWRITE | |
133 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 134 | FATTR4_WORD1_TIME_DELTA |
504913fb | 135 | | FATTR4_WORD1_FS_LAYOUT_TYPES |
1da177e4 LT |
136 | }; |
137 | ||
830b8e33 MN |
138 | const u32 nfs4_fs_locations_bitmap[2] = { |
139 | FATTR4_WORD0_TYPE | |
140 | | FATTR4_WORD0_CHANGE | |
141 | | FATTR4_WORD0_SIZE | |
142 | | FATTR4_WORD0_FSID | |
143 | | FATTR4_WORD0_FILEID | |
144 | | FATTR4_WORD0_FS_LOCATIONS, | |
145 | FATTR4_WORD1_MODE | |
146 | | FATTR4_WORD1_NUMLINKS | |
147 | | FATTR4_WORD1_OWNER | |
148 | | FATTR4_WORD1_OWNER_GROUP | |
149 | | FATTR4_WORD1_RAWDEV | |
150 | | FATTR4_WORD1_SPACE_USED | |
151 | | FATTR4_WORD1_TIME_ACCESS | |
152 | | FATTR4_WORD1_TIME_METADATA | |
153 | | FATTR4_WORD1_TIME_MODIFY | |
154 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
155 | }; | |
156 | ||
bc4785cd | 157 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
158 | struct nfs4_readdir_arg *readdir) |
159 | { | |
0dbb4c67 | 160 | __be32 *start, *p; |
1da177e4 LT |
161 | |
162 | BUG_ON(readdir->count < 80); | |
163 | if (cookie > 2) { | |
b7ef1956 | 164 | readdir->cookie = cookie; |
1da177e4 LT |
165 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
166 | return; | |
167 | } | |
168 | ||
169 | readdir->cookie = 0; | |
170 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
171 | if (cookie == 2) | |
172 | return; | |
173 | ||
174 | /* | |
175 | * NFSv4 servers do not return entries for '.' and '..' | |
176 | * Therefore, we fake these entries here. We let '.' | |
177 | * have cookie 0 and '..' have cookie 1. Note that | |
178 | * when talking to the server, we always send cookie 0 | |
179 | * instead of 1 or 2. | |
180 | */ | |
0dbb4c67 | 181 | start = p = kmap_atomic(*readdir->pages, KM_USER0); |
1da177e4 LT |
182 | |
183 | if (cookie == 0) { | |
184 | *p++ = xdr_one; /* next */ | |
185 | *p++ = xdr_zero; /* cookie, first word */ | |
186 | *p++ = xdr_one; /* cookie, second word */ | |
187 | *p++ = xdr_one; /* entry len */ | |
188 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
189 | p++; | |
190 | *p++ = xdr_one; /* bitmap length */ | |
191 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
192 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 193 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
194 | } |
195 | ||
196 | *p++ = xdr_one; /* next */ | |
197 | *p++ = xdr_zero; /* cookie, first word */ | |
198 | *p++ = xdr_two; /* cookie, second word */ | |
199 | *p++ = xdr_two; /* entry len */ | |
200 | memcpy(p, "..\0\0", 4); /* entry */ | |
201 | p++; | |
202 | *p++ = xdr_one; /* bitmap length */ | |
203 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
204 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 205 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
206 | |
207 | readdir->pgbase = (char *)p - (char *)start; | |
208 | readdir->count -= readdir->pgbase; | |
209 | kunmap_atomic(start, KM_USER0); | |
210 | } | |
211 | ||
65de872e TM |
212 | static int nfs4_wait_clnt_recover(struct nfs_client *clp) |
213 | { | |
214 | int res; | |
215 | ||
216 | might_sleep(); | |
217 | ||
e005e804 | 218 | res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING, |
72cb77f4 | 219 | nfs_wait_bit_killable, TASK_KILLABLE); |
65de872e TM |
220 | return res; |
221 | } | |
222 | ||
223 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) | |
224 | { | |
225 | int res = 0; | |
226 | ||
227 | might_sleep(); | |
228 | ||
229 | if (*timeout <= 0) | |
230 | *timeout = NFS4_POLL_RETRY_MIN; | |
231 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
232 | *timeout = NFS4_POLL_RETRY_MAX; | |
233 | schedule_timeout_killable(*timeout); | |
234 | if (fatal_signal_pending(current)) | |
235 | res = -ERESTARTSYS; | |
236 | *timeout <<= 1; | |
237 | return res; | |
238 | } | |
239 | ||
240 | /* This is the error handling routine for processes that are allowed | |
241 | * to sleep. | |
242 | */ | |
243 | static int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception) | |
244 | { | |
245 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 246 | struct nfs4_state *state = exception->state; |
65de872e TM |
247 | int ret = errorcode; |
248 | ||
249 | exception->retry = 0; | |
250 | switch(errorcode) { | |
251 | case 0: | |
252 | return 0; | |
9e33bed5 TM |
253 | case -NFS4ERR_ADMIN_REVOKED: |
254 | case -NFS4ERR_BAD_STATEID: | |
255 | case -NFS4ERR_OPENMODE: | |
256 | if (state == NULL) | |
257 | break; | |
258 | nfs4_state_mark_reclaim_nograce(clp, state); | |
a2c0b9e2 | 259 | goto do_state_recovery; |
65de872e | 260 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 261 | case -NFS4ERR_STALE_CLIENTID: |
65de872e | 262 | case -NFS4ERR_EXPIRED: |
a2c0b9e2 | 263 | goto do_state_recovery; |
03391693 | 264 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
265 | case -NFS4ERR_BADSESSION: |
266 | case -NFS4ERR_BADSLOT: | |
267 | case -NFS4ERR_BAD_HIGH_SLOT: | |
268 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
269 | case -NFS4ERR_DEADSESSION: | |
270 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
271 | case -NFS4ERR_SEQ_MISORDERED: | |
272 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
273 | errorcode); | |
0b9e2d41 | 274 | nfs4_schedule_state_recovery(clp); |
4745e315 | 275 | exception->retry = 1; |
b9179237 | 276 | break; |
03391693 | 277 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 278 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
279 | if (exception->timeout > HZ) { |
280 | /* We have retried a decent amount, time to | |
281 | * fail | |
282 | */ | |
283 | ret = -EBUSY; | |
284 | break; | |
285 | } | |
65de872e TM |
286 | case -NFS4ERR_GRACE: |
287 | case -NFS4ERR_DELAY: | |
2c643488 | 288 | case -EKEYEXPIRED: |
65de872e TM |
289 | ret = nfs4_delay(server->client, &exception->timeout); |
290 | if (ret != 0) | |
291 | break; | |
292 | case -NFS4ERR_OLD_STATEID: | |
293 | exception->retry = 1; | |
294 | } | |
295 | /* We failed to handle the error */ | |
296 | return nfs4_map_errors(ret); | |
a2c0b9e2 TM |
297 | do_state_recovery: |
298 | nfs4_schedule_state_recovery(clp); | |
299 | ret = nfs4_wait_clnt_recover(clp); | |
300 | if (ret == 0) | |
301 | exception->retry = 1; | |
302 | return ret; | |
65de872e TM |
303 | } |
304 | ||
305 | ||
452e9352 | 306 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 307 | { |
1da177e4 LT |
308 | spin_lock(&clp->cl_lock); |
309 | if (time_before(clp->cl_last_renewal,timestamp)) | |
310 | clp->cl_last_renewal = timestamp; | |
311 | spin_unlock(&clp->cl_lock); | |
312 | } | |
313 | ||
452e9352 TM |
314 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
315 | { | |
316 | do_renew_lease(server->nfs_client, timestamp); | |
317 | } | |
318 | ||
cccef3b9 AA |
319 | #if defined(CONFIG_NFS_V4_1) |
320 | ||
e2c4ab3c AA |
321 | /* |
322 | * nfs4_free_slot - free a slot and efficiently update slot table. | |
323 | * | |
324 | * freeing a slot is trivially done by clearing its respective bit | |
325 | * in the bitmap. | |
326 | * If the freed slotid equals highest_used_slotid we want to update it | |
327 | * so that the server would be able to size down the slot table if needed, | |
328 | * otherwise we know that the highest_used_slotid is still in use. | |
329 | * When updating highest_used_slotid there may be "holes" in the bitmap | |
330 | * so we need to scan down from highest_used_slotid to 0 looking for the now | |
331 | * highest slotid in use. | |
332 | * If none found, highest_used_slotid is set to -1. | |
35dc1d74 TM |
333 | * |
334 | * Must be called while holding tbl->slot_tbl_lock | |
e2c4ab3c AA |
335 | */ |
336 | static void | |
dfb4f309 | 337 | nfs4_free_slot(struct nfs4_slot_table *tbl, struct nfs4_slot *free_slot) |
e2c4ab3c | 338 | { |
dfb4f309 | 339 | int free_slotid = free_slot - tbl->slots; |
e2c4ab3c AA |
340 | int slotid = free_slotid; |
341 | ||
dfb4f309 | 342 | BUG_ON(slotid < 0 || slotid >= NFS4_MAX_SLOT_TABLE); |
e2c4ab3c AA |
343 | /* clear used bit in bitmap */ |
344 | __clear_bit(slotid, tbl->used_slots); | |
345 | ||
346 | /* update highest_used_slotid when it is freed */ | |
347 | if (slotid == tbl->highest_used_slotid) { | |
348 | slotid = find_last_bit(tbl->used_slots, tbl->max_slots); | |
bcb56164 | 349 | if (slotid < tbl->max_slots) |
e2c4ab3c AA |
350 | tbl->highest_used_slotid = slotid; |
351 | else | |
352 | tbl->highest_used_slotid = -1; | |
353 | } | |
e2c4ab3c AA |
354 | dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__, |
355 | free_slotid, tbl->highest_used_slotid); | |
356 | } | |
357 | ||
3bfb0fc5 AB |
358 | /* |
359 | * Signal state manager thread if session is drained | |
360 | */ | |
361 | static void nfs41_check_drain_session_complete(struct nfs4_session *ses) | |
362 | { | |
689cf5c1 AB |
363 | struct rpc_task *task; |
364 | ||
a2118c33 | 365 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state)) { |
689cf5c1 AB |
366 | task = rpc_wake_up_next(&ses->fc_slot_table.slot_tbl_waitq); |
367 | if (task) | |
368 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
3bfb0fc5 AB |
369 | return; |
370 | } | |
371 | ||
372 | if (ses->fc_slot_table.highest_used_slotid != -1) | |
373 | return; | |
374 | ||
375 | dprintk("%s COMPLETE: Session Drained\n", __func__); | |
376 | complete(&ses->complete); | |
377 | } | |
378 | ||
d185a334 | 379 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 AA |
380 | { |
381 | struct nfs4_slot_table *tbl; | |
382 | ||
d185a334 | 383 | tbl = &res->sr_session->fc_slot_table; |
dfb4f309 | 384 | if (!res->sr_slot) { |
13615871 AA |
385 | /* just wake up the next guy waiting since |
386 | * we may have not consumed a slot after all */ | |
691daf3b | 387 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 388 | return; |
13615871 | 389 | } |
ea028ac9 | 390 | |
35dc1d74 | 391 | spin_lock(&tbl->slot_tbl_lock); |
dfb4f309 | 392 | nfs4_free_slot(tbl, res->sr_slot); |
d185a334 | 393 | nfs41_check_drain_session_complete(res->sr_session); |
35dc1d74 | 394 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 395 | res->sr_slot = NULL; |
13615871 AA |
396 | } |
397 | ||
14516c3a | 398 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c AA |
399 | { |
400 | unsigned long timestamp; | |
14516c3a | 401 | struct nfs_client *clp; |
b0df806c AA |
402 | |
403 | /* | |
404 | * sr_status remains 1 if an RPC level error occurred. The server | |
405 | * may or may not have processed the sequence operation.. | |
406 | * Proceed as if the server received and processed the sequence | |
407 | * operation. | |
408 | */ | |
409 | if (res->sr_status == 1) | |
410 | res->sr_status = NFS_OK; | |
411 | ||
412 | /* -ERESTARTSYS can result in skipping nfs41_sequence_setup */ | |
dfb4f309 | 413 | if (!res->sr_slot) |
b0df806c AA |
414 | goto out; |
415 | ||
691daf3b | 416 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
417 | switch (res->sr_status) { |
418 | case 0: | |
b0df806c | 419 | /* Update the slot's sequence and clientid lease timer */ |
dfb4f309 | 420 | ++res->sr_slot->seq_nr; |
b0df806c | 421 | timestamp = res->sr_renewal_time; |
14516c3a | 422 | clp = res->sr_session->clp; |
452e9352 | 423 | do_renew_lease(clp, timestamp); |
0629e370 | 424 | /* Check sequence flags */ |
7135840f AB |
425 | if (atomic_read(&clp->cl_count) > 1) |
426 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
14516c3a TM |
427 | break; |
428 | case -NFS4ERR_DELAY: | |
429 | /* The server detected a resend of the RPC call and | |
430 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
431 | * of RFC5661. | |
432 | */ | |
12364a4f | 433 | dprintk("%s: slot=%td seq=%d: Operation in progress\n", |
dfb4f309 BH |
434 | __func__, |
435 | res->sr_slot - res->sr_session->fc_slot_table.slots, | |
436 | res->sr_slot->seq_nr); | |
14516c3a TM |
437 | goto out_retry; |
438 | default: | |
439 | /* Just update the slot sequence no. */ | |
dfb4f309 | 440 | ++res->sr_slot->seq_nr; |
b0df806c AA |
441 | } |
442 | out: | |
443 | /* The session may be reset by one of the error handlers. */ | |
444 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 445 | nfs41_sequence_free_slot(res); |
14516c3a TM |
446 | return 1; |
447 | out_retry: | |
d05dd4e9 | 448 | if (!rpc_restart_call(task)) |
14516c3a TM |
449 | goto out; |
450 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
451 | return 0; | |
b0df806c AA |
452 | } |
453 | ||
14516c3a TM |
454 | static int nfs4_sequence_done(struct rpc_task *task, |
455 | struct nfs4_sequence_res *res) | |
df896455 | 456 | { |
14516c3a TM |
457 | if (res->sr_session == NULL) |
458 | return 1; | |
459 | return nfs41_sequence_done(task, res); | |
df896455 TM |
460 | } |
461 | ||
510b8175 BH |
462 | /* |
463 | * nfs4_find_slot - efficiently look for a free slot | |
464 | * | |
465 | * nfs4_find_slot looks for an unset bit in the used_slots bitmap. | |
466 | * If found, we mark the slot as used, update the highest_used_slotid, | |
467 | * and respectively set up the sequence operation args. | |
468 | * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise. | |
fbcd4abc AA |
469 | * |
470 | * Note: must be called with under the slot_tbl_lock. | |
510b8175 BH |
471 | */ |
472 | static u8 | |
40ead580 | 473 | nfs4_find_slot(struct nfs4_slot_table *tbl) |
510b8175 BH |
474 | { |
475 | int slotid; | |
476 | u8 ret_id = NFS4_MAX_SLOT_TABLE; | |
477 | BUILD_BUG_ON((u8)NFS4_MAX_SLOT_TABLE != (int)NFS4_MAX_SLOT_TABLE); | |
478 | ||
510b8175 BH |
479 | dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n", |
480 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, | |
481 | tbl->max_slots); | |
482 | slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots); | |
483 | if (slotid >= tbl->max_slots) | |
484 | goto out; | |
485 | __set_bit(slotid, tbl->used_slots); | |
486 | if (slotid > tbl->highest_used_slotid) | |
487 | tbl->highest_used_slotid = slotid; | |
488 | ret_id = slotid; | |
489 | out: | |
490 | dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n", | |
491 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, ret_id); | |
510b8175 BH |
492 | return ret_id; |
493 | } | |
494 | ||
ce5039c1 AA |
495 | static int nfs41_setup_sequence(struct nfs4_session *session, |
496 | struct nfs4_sequence_args *args, | |
497 | struct nfs4_sequence_res *res, | |
498 | int cache_reply, | |
499 | struct rpc_task *task) | |
500 | { | |
fbcd4abc AA |
501 | struct nfs4_slot *slot; |
502 | struct nfs4_slot_table *tbl; | |
503 | u8 slotid; | |
504 | ||
505 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 506 | /* slot already allocated? */ |
dfb4f309 | 507 | if (res->sr_slot != NULL) |
ce5039c1 AA |
508 | return 0; |
509 | ||
fbcd4abc AA |
510 | tbl = &session->fc_slot_table; |
511 | ||
512 | spin_lock(&tbl->slot_tbl_lock); | |
a2118c33 | 513 | if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) && |
5601a00d | 514 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { |
ea028ac9 AA |
515 | /* |
516 | * The state manager will wait until the slot table is empty. | |
517 | * Schedule the reset thread | |
518 | */ | |
05f0d236 | 519 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
b069d94a | 520 | spin_unlock(&tbl->slot_tbl_lock); |
bcb56164 | 521 | dprintk("%s Schedule Session Reset\n", __func__); |
05f0d236 | 522 | return -EAGAIN; |
b069d94a AA |
523 | } |
524 | ||
689cf5c1 AB |
525 | if (!rpc_queue_empty(&tbl->slot_tbl_waitq) && |
526 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { | |
527 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
528 | spin_unlock(&tbl->slot_tbl_lock); | |
529 | dprintk("%s enforce FIFO order\n", __func__); | |
530 | return -EAGAIN; | |
531 | } | |
532 | ||
40ead580 | 533 | slotid = nfs4_find_slot(tbl); |
fbcd4abc AA |
534 | if (slotid == NFS4_MAX_SLOT_TABLE) { |
535 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
536 | spin_unlock(&tbl->slot_tbl_lock); | |
537 | dprintk("<-- %s: no free slots\n", __func__); | |
538 | return -EAGAIN; | |
539 | } | |
540 | spin_unlock(&tbl->slot_tbl_lock); | |
541 | ||
689cf5c1 | 542 | rpc_task_set_priority(task, RPC_PRIORITY_NORMAL); |
fbcd4abc | 543 | slot = tbl->slots + slotid; |
99fe60d0 | 544 | args->sa_session = session; |
fbcd4abc AA |
545 | args->sa_slotid = slotid; |
546 | args->sa_cache_this = cache_reply; | |
547 | ||
548 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr); | |
549 | ||
99fe60d0 | 550 | res->sr_session = session; |
dfb4f309 | 551 | res->sr_slot = slot; |
fbcd4abc | 552 | res->sr_renewal_time = jiffies; |
2a6e26cd | 553 | res->sr_status_flags = 0; |
fbcd4abc AA |
554 | /* |
555 | * sr_status is only set in decode_sequence, and so will remain | |
556 | * set to 1 if an rpc level failure occurs. | |
557 | */ | |
558 | res->sr_status = 1; | |
ce5039c1 AA |
559 | return 0; |
560 | } | |
561 | ||
035168ab | 562 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
563 | struct nfs4_sequence_args *args, |
564 | struct nfs4_sequence_res *res, | |
565 | int cache_reply, | |
566 | struct rpc_task *task) | |
567 | { | |
035168ab | 568 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
569 | int ret = 0; |
570 | ||
035168ab TM |
571 | if (session == NULL) { |
572 | args->sa_session = NULL; | |
573 | res->sr_session = NULL; | |
574 | goto out; | |
575 | } | |
576 | ||
12364a4f | 577 | dprintk("--> %s clp %p session %p sr_slot %td\n", |
dfb4f309 BH |
578 | __func__, session->clp, session, res->sr_slot ? |
579 | res->sr_slot - session->fc_slot_table.slots : -1); | |
ce5039c1 | 580 | |
035168ab | 581 | ret = nfs41_setup_sequence(session, args, res, cache_reply, |
ce5039c1 | 582 | task); |
ce5039c1 AA |
583 | out: |
584 | dprintk("<-- %s status=%d\n", __func__, ret); | |
585 | return ret; | |
586 | } | |
587 | ||
588 | struct nfs41_call_sync_data { | |
035168ab | 589 | const struct nfs_server *seq_server; |
ce5039c1 AA |
590 | struct nfs4_sequence_args *seq_args; |
591 | struct nfs4_sequence_res *seq_res; | |
592 | int cache_reply; | |
593 | }; | |
594 | ||
595 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
596 | { | |
597 | struct nfs41_call_sync_data *data = calldata; | |
598 | ||
035168ab TM |
599 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
600 | ||
601 | if (nfs4_setup_sequence(data->seq_server, data->seq_args, | |
ce5039c1 AA |
602 | data->seq_res, data->cache_reply, task)) |
603 | return; | |
604 | rpc_call_start(task); | |
605 | } | |
606 | ||
b257957e AB |
607 | static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata) |
608 | { | |
609 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
610 | nfs41_call_sync_prepare(task, calldata); | |
611 | } | |
612 | ||
69ab40c4 AA |
613 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
614 | { | |
615 | struct nfs41_call_sync_data *data = calldata; | |
616 | ||
14516c3a | 617 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
618 | } |
619 | ||
ce5039c1 AA |
620 | struct rpc_call_ops nfs41_call_sync_ops = { |
621 | .rpc_call_prepare = nfs41_call_sync_prepare, | |
69ab40c4 | 622 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
623 | }; |
624 | ||
b257957e AB |
625 | struct rpc_call_ops nfs41_call_priv_sync_ops = { |
626 | .rpc_call_prepare = nfs41_call_priv_sync_prepare, | |
627 | .rpc_call_done = nfs41_call_sync_done, | |
628 | }; | |
629 | ||
035168ab | 630 | static int nfs4_call_sync_sequence(struct nfs_server *server, |
ce5039c1 AA |
631 | struct rpc_message *msg, |
632 | struct nfs4_sequence_args *args, | |
633 | struct nfs4_sequence_res *res, | |
b257957e AB |
634 | int cache_reply, |
635 | int privileged) | |
ce5039c1 AA |
636 | { |
637 | int ret; | |
638 | struct rpc_task *task; | |
639 | struct nfs41_call_sync_data data = { | |
035168ab | 640 | .seq_server = server, |
ce5039c1 AA |
641 | .seq_args = args, |
642 | .seq_res = res, | |
643 | .cache_reply = cache_reply, | |
644 | }; | |
645 | struct rpc_task_setup task_setup = { | |
035168ab | 646 | .rpc_client = server->client, |
ce5039c1 AA |
647 | .rpc_message = msg, |
648 | .callback_ops = &nfs41_call_sync_ops, | |
649 | .callback_data = &data | |
650 | }; | |
651 | ||
dfb4f309 | 652 | res->sr_slot = NULL; |
b257957e AB |
653 | if (privileged) |
654 | task_setup.callback_ops = &nfs41_call_priv_sync_ops; | |
ce5039c1 AA |
655 | task = rpc_run_task(&task_setup); |
656 | if (IS_ERR(task)) | |
657 | ret = PTR_ERR(task); | |
658 | else { | |
659 | ret = task->tk_status; | |
660 | rpc_put_task(task); | |
661 | } | |
662 | return ret; | |
663 | } | |
664 | ||
cccef3b9 AA |
665 | int _nfs4_call_sync_session(struct nfs_server *server, |
666 | struct rpc_message *msg, | |
667 | struct nfs4_sequence_args *args, | |
668 | struct nfs4_sequence_res *res, | |
669 | int cache_reply) | |
670 | { | |
035168ab | 671 | return nfs4_call_sync_sequence(server, msg, args, res, cache_reply, 0); |
cccef3b9 AA |
672 | } |
673 | ||
df896455 | 674 | #else |
14516c3a TM |
675 | static int nfs4_sequence_done(struct rpc_task *task, |
676 | struct nfs4_sequence_res *res) | |
df896455 | 677 | { |
14516c3a | 678 | return 1; |
df896455 | 679 | } |
cccef3b9 AA |
680 | #endif /* CONFIG_NFS_V4_1 */ |
681 | ||
682 | int _nfs4_call_sync(struct nfs_server *server, | |
683 | struct rpc_message *msg, | |
684 | struct nfs4_sequence_args *args, | |
685 | struct nfs4_sequence_res *res, | |
686 | int cache_reply) | |
687 | { | |
f3752975 | 688 | args->sa_session = res->sr_session = NULL; |
cccef3b9 AA |
689 | return rpc_call_sync(server->client, msg, 0); |
690 | } | |
691 | ||
692 | #define nfs4_call_sync(server, msg, args, res, cache_reply) \ | |
97dc1359 | 693 | (server)->nfs_client->cl_mvops->call_sync((server), (msg), &(args)->seq_args, \ |
cccef3b9 AA |
694 | &(res)->seq_res, (cache_reply)) |
695 | ||
38478b24 | 696 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 697 | { |
38478b24 | 698 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 699 | |
38478b24 | 700 | spin_lock(&dir->i_lock); |
40d24704 TM |
701 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; |
702 | if (!cinfo->atomic || cinfo->before != nfsi->change_attr) | |
bfc69a45 | 703 | nfs_force_lookup_revalidate(dir); |
40d24704 | 704 | nfsi->change_attr = cinfo->after; |
38478b24 | 705 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
706 | } |
707 | ||
e56e0b78 | 708 | struct nfs4_opendata { |
c6d00e63 | 709 | struct kref kref; |
e56e0b78 TM |
710 | struct nfs_openargs o_arg; |
711 | struct nfs_openres o_res; | |
cdd4e68b TM |
712 | struct nfs_open_confirmargs c_arg; |
713 | struct nfs_open_confirmres c_res; | |
e56e0b78 TM |
714 | struct nfs_fattr f_attr; |
715 | struct nfs_fattr dir_attr; | |
ad389da7 | 716 | struct path path; |
e56e0b78 TM |
717 | struct dentry *dir; |
718 | struct nfs4_state_owner *owner; | |
aac00a8d | 719 | struct nfs4_state *state; |
e56e0b78 | 720 | struct iattr attrs; |
26e976a8 | 721 | unsigned long timestamp; |
3e309914 | 722 | unsigned int rpc_done : 1; |
24ac23ab TM |
723 | int rpc_status; |
724 | int cancelled; | |
e56e0b78 TM |
725 | }; |
726 | ||
2ced46c2 TM |
727 | |
728 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
729 | { | |
730 | p->o_res.f_attr = &p->f_attr; | |
731 | p->o_res.dir_attr = &p->dir_attr; | |
c1d51931 TM |
732 | p->o_res.seqid = p->o_arg.seqid; |
733 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 TM |
734 | p->o_res.server = p->o_arg.server; |
735 | nfs_fattr_init(&p->f_attr); | |
736 | nfs_fattr_init(&p->dir_attr); | |
737 | } | |
738 | ||
ad389da7 | 739 | static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path, |
dc0b027d | 740 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be TM |
741 | const struct iattr *attrs, |
742 | gfp_t gfp_mask) | |
e56e0b78 | 743 | { |
ad389da7 | 744 | struct dentry *parent = dget_parent(path->dentry); |
e56e0b78 TM |
745 | struct inode *dir = parent->d_inode; |
746 | struct nfs_server *server = NFS_SERVER(dir); | |
747 | struct nfs4_opendata *p; | |
748 | ||
8535b2be | 749 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
750 | if (p == NULL) |
751 | goto err; | |
8535b2be | 752 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
753 | if (p->o_arg.seqid == NULL) |
754 | goto err_free; | |
f6948697 AV |
755 | path_get(path); |
756 | p->path = *path; | |
e56e0b78 TM |
757 | p->dir = parent; |
758 | p->owner = sp; | |
759 | atomic_inc(&sp->so_count); | |
760 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
761 | p->o_arg.open_flags = flags; |
762 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
7539bbab | 763 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 764 | p->o_arg.id = sp->so_owner_id.id; |
ad389da7 | 765 | p->o_arg.name = &p->path.dentry->d_name; |
e56e0b78 TM |
766 | p->o_arg.server = server; |
767 | p->o_arg.bitmask = server->attr_bitmask; | |
768 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; | |
d77d76ff TM |
769 | if (flags & O_CREAT) { |
770 | u32 *s; | |
771 | ||
e56e0b78 TM |
772 | p->o_arg.u.attrs = &p->attrs; |
773 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
d77d76ff TM |
774 | s = (u32 *) p->o_arg.u.verifier.data; |
775 | s[0] = jiffies; | |
776 | s[1] = current->pid; | |
e56e0b78 | 777 | } |
cdd4e68b TM |
778 | p->c_arg.fh = &p->o_res.fh; |
779 | p->c_arg.stateid = &p->o_res.stateid; | |
780 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 781 | nfs4_init_opendata_res(p); |
c6d00e63 | 782 | kref_init(&p->kref); |
e56e0b78 TM |
783 | return p; |
784 | err_free: | |
785 | kfree(p); | |
786 | err: | |
787 | dput(parent); | |
788 | return NULL; | |
789 | } | |
790 | ||
c6d00e63 | 791 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 792 | { |
c6d00e63 TM |
793 | struct nfs4_opendata *p = container_of(kref, |
794 | struct nfs4_opendata, kref); | |
795 | ||
796 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
797 | if (p->state != NULL) |
798 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
799 | nfs4_put_state_owner(p->owner); |
800 | dput(p->dir); | |
31f31db1 | 801 | path_put(&p->path); |
c6d00e63 TM |
802 | kfree(p); |
803 | } | |
804 | ||
805 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
806 | { | |
807 | if (p != NULL) | |
808 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
809 | } |
810 | ||
06f814a3 TM |
811 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
812 | { | |
06f814a3 TM |
813 | int ret; |
814 | ||
06f814a3 | 815 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
816 | return ret; |
817 | } | |
818 | ||
dc0b027d | 819 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
820 | { |
821 | int ret = 0; | |
dc0b027d TM |
822 | |
823 | if (open_mode & O_EXCL) | |
824 | goto out; | |
825 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 826 | case FMODE_READ: |
88069f77 TM |
827 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
828 | && state->n_rdonly != 0; | |
6ee41268 TM |
829 | break; |
830 | case FMODE_WRITE: | |
88069f77 TM |
831 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
832 | && state->n_wronly != 0; | |
6ee41268 TM |
833 | break; |
834 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
835 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
836 | && state->n_rdwr != 0; | |
6ee41268 | 837 | } |
dc0b027d | 838 | out: |
6ee41268 TM |
839 | return ret; |
840 | } | |
841 | ||
dc0b027d | 842 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 843 | { |
dc0b027d | 844 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 845 | return 0; |
15c831bf | 846 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 847 | return 0; |
b7391f44 | 848 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
849 | return 1; |
850 | } | |
851 | ||
dc0b027d | 852 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 853 | { |
dc0b027d | 854 | switch (fmode) { |
e7616923 TM |
855 | case FMODE_WRITE: |
856 | state->n_wronly++; | |
857 | break; | |
858 | case FMODE_READ: | |
859 | state->n_rdonly++; | |
860 | break; | |
861 | case FMODE_READ|FMODE_WRITE: | |
862 | state->n_rdwr++; | |
863 | } | |
dc0b027d | 864 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
865 | } |
866 | ||
dc0b027d | 867 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
868 | { |
869 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
870 | memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data)); | |
871 | memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data)); | |
dc0b027d | 872 | switch (fmode) { |
003707c7 TM |
873 | case FMODE_READ: |
874 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
875 | break; | |
876 | case FMODE_WRITE: | |
877 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
878 | break; | |
879 | case FMODE_READ|FMODE_WRITE: | |
880 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
881 | } | |
e7616923 TM |
882 | } |
883 | ||
dc0b027d | 884 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 885 | { |
8bda4e4c | 886 | write_seqlock(&state->seqlock); |
dc0b027d | 887 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 888 | write_sequnlock(&state->seqlock); |
003707c7 TM |
889 | } |
890 | ||
dc0b027d | 891 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 892 | { |
8bda4e4c TM |
893 | /* |
894 | * Protect the call to nfs4_state_set_mode_locked and | |
895 | * serialise the stateid update | |
896 | */ | |
897 | write_seqlock(&state->seqlock); | |
003707c7 TM |
898 | if (deleg_stateid != NULL) { |
899 | memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data)); | |
900 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
901 | } | |
902 | if (open_stateid != NULL) | |
dc0b027d | 903 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
904 | write_sequnlock(&state->seqlock); |
905 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 906 | update_open_stateflags(state, fmode); |
ec073428 | 907 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
908 | } |
909 | ||
dc0b027d | 910 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
911 | { |
912 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
913 | struct nfs_delegation *deleg_cur; | |
914 | int ret = 0; | |
915 | ||
dc0b027d | 916 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
917 | |
918 | rcu_read_lock(); | |
919 | deleg_cur = rcu_dereference(nfsi->delegation); | |
920 | if (deleg_cur == NULL) | |
921 | goto no_delegation; | |
922 | ||
923 | spin_lock(&deleg_cur->lock); | |
924 | if (nfsi->delegation != deleg_cur || | |
dc0b027d | 925 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
926 | goto no_delegation_unlock; |
927 | ||
928 | if (delegation == NULL) | |
929 | delegation = &deleg_cur->stateid; | |
930 | else if (memcmp(deleg_cur->stateid.data, delegation->data, NFS4_STATEID_SIZE) != 0) | |
931 | goto no_delegation_unlock; | |
932 | ||
b7391f44 | 933 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 934 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
935 | ret = 1; |
936 | no_delegation_unlock: | |
937 | spin_unlock(&deleg_cur->lock); | |
938 | no_delegation: | |
939 | rcu_read_unlock(); | |
940 | ||
941 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 942 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
943 | ret = 1; |
944 | } | |
945 | ||
946 | return ret; | |
947 | } | |
948 | ||
949 | ||
dc0b027d | 950 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
951 | { |
952 | struct nfs_delegation *delegation; | |
953 | ||
954 | rcu_read_lock(); | |
955 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 956 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
957 | rcu_read_unlock(); |
958 | return; | |
959 | } | |
960 | rcu_read_unlock(); | |
961 | nfs_inode_return_delegation(inode); | |
962 | } | |
963 | ||
6ee41268 | 964 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
965 | { |
966 | struct nfs4_state *state = opendata->state; | |
967 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
968 | struct nfs_delegation *delegation; | |
dc0b027d TM |
969 | int open_mode = opendata->o_arg.open_flags & O_EXCL; |
970 | fmode_t fmode = opendata->o_arg.fmode; | |
aac00a8d TM |
971 | nfs4_stateid stateid; |
972 | int ret = -EAGAIN; | |
973 | ||
aac00a8d | 974 | for (;;) { |
dc0b027d | 975 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 976 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
977 | if (can_open_cached(state, fmode, open_mode)) { |
978 | update_open_stateflags(state, fmode); | |
6ee41268 | 979 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
980 | goto out_return_state; |
981 | } | |
982 | spin_unlock(&state->owner->so_lock); | |
983 | } | |
34310430 TM |
984 | rcu_read_lock(); |
985 | delegation = rcu_dereference(nfsi->delegation); | |
986 | if (delegation == NULL || | |
dc0b027d | 987 | !can_open_delegated(delegation, fmode)) { |
34310430 | 988 | rcu_read_unlock(); |
aac00a8d | 989 | break; |
34310430 | 990 | } |
aac00a8d TM |
991 | /* Save the delegation */ |
992 | memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data)); | |
993 | rcu_read_unlock(); | |
af22f94a | 994 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
995 | if (ret != 0) |
996 | goto out; | |
997 | ret = -EAGAIN; | |
34310430 TM |
998 | |
999 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1000 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1001 | goto out_return_state; |
aac00a8d | 1002 | } |
aac00a8d TM |
1003 | out: |
1004 | return ERR_PTR(ret); | |
1005 | out_return_state: | |
1006 | atomic_inc(&state->count); | |
1007 | return state; | |
1008 | } | |
1009 | ||
24ac23ab TM |
1010 | static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) |
1011 | { | |
1012 | struct inode *inode; | |
1013 | struct nfs4_state *state = NULL; | |
003707c7 | 1014 | struct nfs_delegation *delegation; |
1b370bc2 | 1015 | int ret; |
24ac23ab | 1016 | |
aac00a8d | 1017 | if (!data->rpc_done) { |
6ee41268 | 1018 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1019 | goto out; |
1020 | } | |
1021 | ||
1b370bc2 | 1022 | ret = -EAGAIN; |
24ac23ab | 1023 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1024 | goto err; |
24ac23ab | 1025 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 1026 | ret = PTR_ERR(inode); |
03f28e3a | 1027 | if (IS_ERR(inode)) |
1b370bc2 TM |
1028 | goto err; |
1029 | ret = -ENOMEM; | |
24ac23ab TM |
1030 | state = nfs4_get_open_state(inode, data->owner); |
1031 | if (state == NULL) | |
1b370bc2 | 1032 | goto err_put_inode; |
549d6ed5 | 1033 | if (data->o_res.delegation_type != 0) { |
549d6ed5 TM |
1034 | int delegation_flags = 0; |
1035 | ||
003707c7 TM |
1036 | rcu_read_lock(); |
1037 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
1038 | if (delegation) | |
1039 | delegation_flags = delegation->flags; | |
1040 | rcu_read_unlock(); | |
15c831bf | 1041 | if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) |
549d6ed5 TM |
1042 | nfs_inode_set_delegation(state->inode, |
1043 | data->owner->so_cred, | |
1044 | &data->o_res); | |
1045 | else | |
1046 | nfs_inode_reclaim_delegation(state->inode, | |
1047 | data->owner->so_cred, | |
1048 | &data->o_res); | |
1049 | } | |
34310430 TM |
1050 | |
1051 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
dc0b027d | 1052 | data->o_arg.fmode); |
24ac23ab | 1053 | iput(inode); |
aac00a8d | 1054 | out: |
24ac23ab | 1055 | return state; |
1b370bc2 TM |
1056 | err_put_inode: |
1057 | iput(inode); | |
1058 | err: | |
1059 | return ERR_PTR(ret); | |
24ac23ab TM |
1060 | } |
1061 | ||
864472e9 TM |
1062 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1063 | { | |
1064 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1065 | struct nfs_open_context *ctx; | |
1066 | ||
1067 | spin_lock(&state->inode->i_lock); | |
1068 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1069 | if (ctx->state != state) | |
1070 | continue; | |
1071 | get_nfs_open_context(ctx); | |
1072 | spin_unlock(&state->inode->i_lock); | |
1073 | return ctx; | |
1074 | } | |
1075 | spin_unlock(&state->inode->i_lock); | |
1076 | return ERR_PTR(-ENOENT); | |
1077 | } | |
1078 | ||
6f220ed5 TM |
1079 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
1080 | { | |
1081 | struct nfs4_opendata *opendata; | |
1082 | ||
8535b2be | 1083 | opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL, GFP_NOFS); |
6f220ed5 TM |
1084 | if (opendata == NULL) |
1085 | return ERR_PTR(-ENOMEM); | |
1086 | opendata->state = state; | |
1087 | atomic_inc(&state->count); | |
1088 | return opendata; | |
1089 | } | |
1090 | ||
dc0b027d | 1091 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1092 | { |
2ced46c2 | 1093 | struct nfs4_state *newstate; |
864472e9 TM |
1094 | int ret; |
1095 | ||
dc0b027d TM |
1096 | opendata->o_arg.open_flags = 0; |
1097 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1098 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1099 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1100 | nfs4_init_opendata_res(opendata); | |
b257957e | 1101 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1102 | if (ret != 0) |
1103 | return ret; | |
2ced46c2 | 1104 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1105 | if (IS_ERR(newstate)) |
1106 | return PTR_ERR(newstate); | |
dc0b027d | 1107 | nfs4_close_state(&opendata->path, newstate, fmode); |
2ced46c2 | 1108 | *res = newstate; |
864472e9 TM |
1109 | return 0; |
1110 | } | |
1111 | ||
1112 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1113 | { | |
864472e9 | 1114 | struct nfs4_state *newstate; |
864472e9 TM |
1115 | int ret; |
1116 | ||
1117 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1118 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1119 | smp_rmb(); |
1120 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1121 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1122 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1123 | if (ret != 0) |
1124 | return ret; | |
2ced46c2 TM |
1125 | if (newstate != state) |
1126 | return -ESTALE; | |
864472e9 TM |
1127 | } |
1128 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1129 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1130 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1131 | if (ret != 0) |
1132 | return ret; | |
2ced46c2 TM |
1133 | if (newstate != state) |
1134 | return -ESTALE; | |
864472e9 TM |
1135 | } |
1136 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1137 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1138 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1139 | if (ret != 0) |
1140 | return ret; | |
2ced46c2 TM |
1141 | if (newstate != state) |
1142 | return -ESTALE; | |
864472e9 | 1143 | } |
1ac7e2fd TM |
1144 | /* |
1145 | * We may have performed cached opens for all three recoveries. | |
1146 | * Check if we need to update the current stateid. | |
1147 | */ | |
1148 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
1149 | memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) { | |
8bda4e4c | 1150 | write_seqlock(&state->seqlock); |
1ac7e2fd TM |
1151 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
1152 | memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)); | |
8bda4e4c | 1153 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1154 | } |
864472e9 TM |
1155 | return 0; |
1156 | } | |
1157 | ||
1da177e4 LT |
1158 | /* |
1159 | * OPEN_RECLAIM: | |
1160 | * reclaim state on the server after a reboot. | |
1da177e4 | 1161 | */ |
539cd03a | 1162 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1163 | { |
1ac7e2fd | 1164 | struct nfs_delegation *delegation; |
864472e9 | 1165 | struct nfs4_opendata *opendata; |
dc0b027d | 1166 | fmode_t delegation_type = 0; |
1da177e4 LT |
1167 | int status; |
1168 | ||
6f220ed5 TM |
1169 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1170 | if (IS_ERR(opendata)) | |
1171 | return PTR_ERR(opendata); | |
864472e9 TM |
1172 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1173 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1174 | rcu_read_lock(); |
1175 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1176 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1177 | delegation_type = delegation->type; |
1ac7e2fd | 1178 | rcu_read_unlock(); |
864472e9 TM |
1179 | opendata->o_arg.u.delegation_type = delegation_type; |
1180 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1181 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1182 | return status; |
1183 | } | |
1184 | ||
539cd03a | 1185 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1186 | { |
1187 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1188 | struct nfs4_exception exception = { }; | |
1189 | int err; | |
1190 | do { | |
539cd03a | 1191 | err = _nfs4_do_open_reclaim(ctx, state); |
168667c4 | 1192 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1193 | break; |
1194 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1195 | } while (exception.retry); |
1196 | return err; | |
1197 | } | |
1198 | ||
864472e9 TM |
1199 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1200 | { | |
1201 | struct nfs_open_context *ctx; | |
1202 | int ret; | |
1203 | ||
1204 | ctx = nfs4_state_find_open_context(state); | |
1205 | if (IS_ERR(ctx)) | |
1206 | return PTR_ERR(ctx); | |
539cd03a | 1207 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1208 | put_nfs_open_context(ctx); |
1209 | return ret; | |
1210 | } | |
1211 | ||
13437e12 | 1212 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1213 | { |
e56e0b78 | 1214 | struct nfs4_opendata *opendata; |
864472e9 | 1215 | int ret; |
1da177e4 | 1216 | |
6f220ed5 TM |
1217 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1218 | if (IS_ERR(opendata)) | |
1219 | return PTR_ERR(opendata); | |
e56e0b78 | 1220 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
13437e12 | 1221 | memcpy(opendata->o_arg.u.delegation.data, stateid->data, |
e56e0b78 | 1222 | sizeof(opendata->o_arg.u.delegation.data)); |
864472e9 | 1223 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1224 | nfs4_opendata_put(opendata); |
864472e9 | 1225 | return ret; |
1da177e4 LT |
1226 | } |
1227 | ||
13437e12 | 1228 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1229 | { |
1230 | struct nfs4_exception exception = { }; | |
539cd03a | 1231 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1232 | int err; |
1233 | do { | |
13437e12 | 1234 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1235 | switch (err) { |
1236 | case 0: | |
965b5d67 TM |
1237 | case -ENOENT: |
1238 | case -ESTALE: | |
1239 | goto out; | |
bcfa49f6 RL |
1240 | case -NFS4ERR_BADSESSION: |
1241 | case -NFS4ERR_BADSLOT: | |
1242 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1243 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1244 | case -NFS4ERR_DEADSESSION: | |
1245 | nfs4_schedule_state_recovery( | |
1246 | server->nfs_client); | |
1247 | goto out; | |
1da177e4 LT |
1248 | case -NFS4ERR_STALE_CLIENTID: |
1249 | case -NFS4ERR_STALE_STATEID: | |
1250 | case -NFS4ERR_EXPIRED: | |
1251 | /* Don't recall a delegation if it was lost */ | |
7539bbab | 1252 | nfs4_schedule_state_recovery(server->nfs_client); |
965b5d67 TM |
1253 | goto out; |
1254 | case -ERESTARTSYS: | |
1255 | /* | |
1256 | * The show must go on: exit, but mark the | |
1257 | * stateid as needing recovery. | |
1258 | */ | |
1259 | case -NFS4ERR_ADMIN_REVOKED: | |
1260 | case -NFS4ERR_BAD_STATEID: | |
1261 | nfs4_state_mark_reclaim_nograce(server->nfs_client, state); | |
168667c4 TM |
1262 | case -EKEYEXPIRED: |
1263 | /* | |
1264 | * User RPCSEC_GSS context has expired. | |
1265 | * We cannot recover this stateid now, so | |
1266 | * skip it and allow recovery thread to | |
1267 | * proceed. | |
1268 | */ | |
965b5d67 TM |
1269 | case -ENOMEM: |
1270 | err = 0; | |
1271 | goto out; | |
1da177e4 LT |
1272 | } |
1273 | err = nfs4_handle_exception(server, err, &exception); | |
1274 | } while (exception.retry); | |
965b5d67 | 1275 | out: |
1da177e4 LT |
1276 | return err; |
1277 | } | |
1278 | ||
cdd4e68b TM |
1279 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1280 | { | |
1281 | struct nfs4_opendata *data = calldata; | |
1282 | ||
1283 | data->rpc_status = task->tk_status; | |
26e976a8 | 1284 | if (data->rpc_status == 0) { |
cdd4e68b TM |
1285 | memcpy(data->o_res.stateid.data, data->c_res.stateid.data, |
1286 | sizeof(data->o_res.stateid.data)); | |
bb22629e | 1287 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1288 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1289 | data->rpc_done = 1; |
26e976a8 | 1290 | } |
cdd4e68b TM |
1291 | } |
1292 | ||
1293 | static void nfs4_open_confirm_release(void *calldata) | |
1294 | { | |
1295 | struct nfs4_opendata *data = calldata; | |
1296 | struct nfs4_state *state = NULL; | |
1297 | ||
1298 | /* If this request hasn't been cancelled, do nothing */ | |
1299 | if (data->cancelled == 0) | |
1300 | goto out_free; | |
1301 | /* In case of error, no cleanup! */ | |
3e309914 | 1302 | if (!data->rpc_done) |
cdd4e68b | 1303 | goto out_free; |
cdd4e68b | 1304 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1305 | if (!IS_ERR(state)) |
dc0b027d | 1306 | nfs4_close_state(&data->path, state, data->o_arg.fmode); |
cdd4e68b | 1307 | out_free: |
c6d00e63 | 1308 | nfs4_opendata_put(data); |
cdd4e68b TM |
1309 | } |
1310 | ||
1311 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1312 | .rpc_call_done = nfs4_open_confirm_done, |
1313 | .rpc_release = nfs4_open_confirm_release, | |
1314 | }; | |
1315 | ||
1316 | /* | |
1317 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1318 | */ | |
1319 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1320 | { | |
1321 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1322 | struct rpc_task *task; | |
5138fde0 TM |
1323 | struct rpc_message msg = { |
1324 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1325 | .rpc_argp = &data->c_arg, | |
1326 | .rpc_resp = &data->c_res, | |
1327 | .rpc_cred = data->owner->so_cred, | |
1328 | }; | |
c970aa85 TM |
1329 | struct rpc_task_setup task_setup_data = { |
1330 | .rpc_client = server->client, | |
5138fde0 | 1331 | .rpc_message = &msg, |
c970aa85 TM |
1332 | .callback_ops = &nfs4_open_confirm_ops, |
1333 | .callback_data = data, | |
101070ca | 1334 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1335 | .flags = RPC_TASK_ASYNC, |
1336 | }; | |
1da177e4 LT |
1337 | int status; |
1338 | ||
c6d00e63 | 1339 | kref_get(&data->kref); |
3e309914 TM |
1340 | data->rpc_done = 0; |
1341 | data->rpc_status = 0; | |
5138fde0 | 1342 | data->timestamp = jiffies; |
c970aa85 | 1343 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1344 | if (IS_ERR(task)) |
cdd4e68b | 1345 | return PTR_ERR(task); |
cdd4e68b TM |
1346 | status = nfs4_wait_for_completion_rpc_task(task); |
1347 | if (status != 0) { | |
1348 | data->cancelled = 1; | |
1349 | smp_wmb(); | |
1350 | } else | |
1351 | status = data->rpc_status; | |
e6b3c4db | 1352 | rpc_put_task(task); |
1da177e4 LT |
1353 | return status; |
1354 | } | |
1355 | ||
24ac23ab | 1356 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1357 | { |
24ac23ab TM |
1358 | struct nfs4_opendata *data = calldata; |
1359 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1360 | |
24ac23ab TM |
1361 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
1362 | return; | |
aac00a8d TM |
1363 | /* |
1364 | * Check if we still need to send an OPEN call, or if we can use | |
1365 | * a delegation instead. | |
1366 | */ | |
1367 | if (data->state != NULL) { | |
1368 | struct nfs_delegation *delegation; | |
1369 | ||
dc0b027d | 1370 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1371 | goto out_no_action; |
aac00a8d TM |
1372 | rcu_read_lock(); |
1373 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
1374 | if (delegation != NULL && | |
15c831bf | 1375 | test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) == 0) { |
aac00a8d | 1376 | rcu_read_unlock(); |
6ee41268 | 1377 | goto out_no_action; |
aac00a8d TM |
1378 | } |
1379 | rcu_read_unlock(); | |
1380 | } | |
24ac23ab | 1381 | /* Update sequence id. */ |
9f958ab8 | 1382 | data->o_arg.id = sp->so_owner_id.id; |
1f0e890d | 1383 | data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; |
6f220ed5 | 1384 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1385 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
6f220ed5 TM |
1386 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1387 | } | |
26e976a8 | 1388 | data->timestamp = jiffies; |
035168ab | 1389 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c AA |
1390 | &data->o_arg.seq_args, |
1391 | &data->o_res.seq_res, 1, task)) | |
1392 | return; | |
5138fde0 | 1393 | rpc_call_start(task); |
6ee41268 TM |
1394 | return; |
1395 | out_no_action: | |
1396 | task->tk_action = NULL; | |
1397 | ||
24ac23ab | 1398 | } |
1da177e4 | 1399 | |
b257957e AB |
1400 | static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata) |
1401 | { | |
1402 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
1403 | nfs4_open_prepare(task, calldata); | |
1404 | } | |
1405 | ||
24ac23ab TM |
1406 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1407 | { | |
1408 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1409 | |
24ac23ab | 1410 | data->rpc_status = task->tk_status; |
d898528c | 1411 | |
14516c3a TM |
1412 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1413 | return; | |
d898528c | 1414 | |
24ac23ab TM |
1415 | if (task->tk_status == 0) { |
1416 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1417 | case S_IFREG: |
1418 | break; | |
1419 | case S_IFLNK: | |
24ac23ab | 1420 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1421 | break; |
1422 | case S_IFDIR: | |
24ac23ab | 1423 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1424 | break; |
1425 | default: | |
24ac23ab | 1426 | data->rpc_status = -ENOTDIR; |
6f926b5b | 1427 | } |
26e976a8 | 1428 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1429 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1430 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1431 | } |
3e309914 | 1432 | data->rpc_done = 1; |
24ac23ab | 1433 | } |
6f926b5b | 1434 | |
24ac23ab TM |
1435 | static void nfs4_open_release(void *calldata) |
1436 | { | |
1437 | struct nfs4_opendata *data = calldata; | |
1438 | struct nfs4_state *state = NULL; | |
1439 | ||
1440 | /* If this request hasn't been cancelled, do nothing */ | |
1441 | if (data->cancelled == 0) | |
1442 | goto out_free; | |
1443 | /* In case of error, no cleanup! */ | |
3e309914 | 1444 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1445 | goto out_free; |
1446 | /* In case we need an open_confirm, no cleanup! */ | |
1447 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1448 | goto out_free; | |
24ac23ab | 1449 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1450 | if (!IS_ERR(state)) |
dc0b027d | 1451 | nfs4_close_state(&data->path, state, data->o_arg.fmode); |
24ac23ab | 1452 | out_free: |
c6d00e63 | 1453 | nfs4_opendata_put(data); |
24ac23ab TM |
1454 | } |
1455 | ||
1456 | static const struct rpc_call_ops nfs4_open_ops = { | |
1457 | .rpc_call_prepare = nfs4_open_prepare, | |
1458 | .rpc_call_done = nfs4_open_done, | |
1459 | .rpc_release = nfs4_open_release, | |
1460 | }; | |
1461 | ||
b257957e AB |
1462 | static const struct rpc_call_ops nfs4_recover_open_ops = { |
1463 | .rpc_call_prepare = nfs4_recover_open_prepare, | |
1464 | .rpc_call_done = nfs4_open_done, | |
1465 | .rpc_release = nfs4_open_release, | |
1466 | }; | |
1467 | ||
1468 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) | |
24ac23ab TM |
1469 | { |
1470 | struct inode *dir = data->dir->d_inode; | |
1471 | struct nfs_server *server = NFS_SERVER(dir); | |
1472 | struct nfs_openargs *o_arg = &data->o_arg; | |
1473 | struct nfs_openres *o_res = &data->o_res; | |
1474 | struct rpc_task *task; | |
5138fde0 TM |
1475 | struct rpc_message msg = { |
1476 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1477 | .rpc_argp = o_arg, | |
1478 | .rpc_resp = o_res, | |
1479 | .rpc_cred = data->owner->so_cred, | |
1480 | }; | |
c970aa85 TM |
1481 | struct rpc_task_setup task_setup_data = { |
1482 | .rpc_client = server->client, | |
5138fde0 | 1483 | .rpc_message = &msg, |
c970aa85 TM |
1484 | .callback_ops = &nfs4_open_ops, |
1485 | .callback_data = data, | |
101070ca | 1486 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1487 | .flags = RPC_TASK_ASYNC, |
1488 | }; | |
24ac23ab TM |
1489 | int status; |
1490 | ||
c6d00e63 | 1491 | kref_get(&data->kref); |
3e309914 TM |
1492 | data->rpc_done = 0; |
1493 | data->rpc_status = 0; | |
2ced46c2 | 1494 | data->cancelled = 0; |
b257957e AB |
1495 | if (isrecover) |
1496 | task_setup_data.callback_ops = &nfs4_recover_open_ops; | |
c970aa85 | 1497 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1498 | if (IS_ERR(task)) |
1499 | return PTR_ERR(task); | |
1500 | status = nfs4_wait_for_completion_rpc_task(task); | |
1501 | if (status != 0) { | |
1502 | data->cancelled = 1; | |
1503 | smp_wmb(); | |
1504 | } else | |
1505 | status = data->rpc_status; | |
1506 | rpc_put_task(task); | |
1507 | ||
1508 | return status; | |
1509 | } | |
1510 | ||
1511 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1512 | { | |
1513 | struct inode *dir = data->dir->d_inode; | |
1514 | struct nfs_openres *o_res = &data->o_res; | |
1515 | int status; | |
1516 | ||
1517 | status = nfs4_run_open_task(data, 1); | |
1518 | if (status != 0 || !data->rpc_done) | |
1519 | return status; | |
1520 | ||
1521 | nfs_refresh_inode(dir, o_res->dir_attr); | |
1522 | ||
1523 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { | |
1524 | status = _nfs4_proc_open_confirm(data); | |
1525 | if (status != 0) | |
1526 | return status; | |
1527 | } | |
1528 | ||
1529 | return status; | |
1530 | } | |
1531 | ||
1532 | /* | |
1533 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1534 | */ | |
1535 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1536 | { | |
1537 | struct inode *dir = data->dir->d_inode; | |
1538 | struct nfs_server *server = NFS_SERVER(dir); | |
1539 | struct nfs_openargs *o_arg = &data->o_arg; | |
1540 | struct nfs_openres *o_res = &data->o_res; | |
1541 | int status; | |
1542 | ||
1543 | status = nfs4_run_open_task(data, 0); | |
3e309914 | 1544 | if (status != 0 || !data->rpc_done) |
24ac23ab TM |
1545 | return status; |
1546 | ||
56ae19f3 TM |
1547 | if (o_arg->open_flags & O_CREAT) { |
1548 | update_changeattr(dir, &o_res->cinfo); | |
1549 | nfs_post_op_update_inode(dir, o_res->dir_attr); | |
1550 | } else | |
1551 | nfs_refresh_inode(dir, o_res->dir_attr); | |
0df5dd4a TM |
1552 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1553 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1554 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1555 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1556 | if (status != 0) |
24ac23ab | 1557 | return status; |
1da177e4 LT |
1558 | } |
1559 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1560 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1561 | return 0; |
1da177e4 LT |
1562 | } |
1563 | ||
10afec90 | 1564 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
58d9714a | 1565 | { |
7539bbab | 1566 | struct nfs_client *clp = server->nfs_client; |
a78cb57a | 1567 | unsigned int loop; |
6b30954e | 1568 | int ret; |
58d9714a | 1569 | |
a78cb57a | 1570 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { |
65de872e | 1571 | ret = nfs4_wait_clnt_recover(clp); |
6b30954e | 1572 | if (ret != 0) |
a78cb57a | 1573 | break; |
e598d843 TM |
1574 | if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) && |
1575 | !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state)) | |
6b30954e | 1576 | break; |
58d9714a | 1577 | nfs4_schedule_state_recovery(clp); |
a78cb57a | 1578 | ret = -EIO; |
6b30954e | 1579 | } |
a78cb57a | 1580 | return ret; |
58d9714a TM |
1581 | } |
1582 | ||
1da177e4 LT |
1583 | /* |
1584 | * OPEN_EXPIRED: | |
1585 | * reclaim state on the server after a network partition. | |
1586 | * Assumes caller holds the appropriate lock | |
1587 | */ | |
539cd03a | 1588 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1589 | { |
e56e0b78 | 1590 | struct nfs4_opendata *opendata; |
864472e9 | 1591 | int ret; |
1da177e4 | 1592 | |
6f220ed5 TM |
1593 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1594 | if (IS_ERR(opendata)) | |
1595 | return PTR_ERR(opendata); | |
864472e9 | 1596 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1597 | if (ret == -ESTALE) |
539cd03a | 1598 | d_drop(ctx->path.dentry); |
c6d00e63 | 1599 | nfs4_opendata_put(opendata); |
864472e9 | 1600 | return ret; |
1da177e4 LT |
1601 | } |
1602 | ||
a9ed2e25 | 1603 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1604 | { |
539cd03a | 1605 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1606 | struct nfs4_exception exception = { }; |
1607 | int err; | |
1608 | ||
1609 | do { | |
539cd03a | 1610 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1611 | switch (err) { |
1612 | default: | |
1613 | goto out; | |
1614 | case -NFS4ERR_GRACE: | |
1615 | case -NFS4ERR_DELAY: | |
1616 | nfs4_handle_exception(server, err, &exception); | |
1617 | err = 0; | |
1618 | } | |
202b50dc | 1619 | } while (exception.retry); |
a9ed2e25 | 1620 | out: |
202b50dc TM |
1621 | return err; |
1622 | } | |
1623 | ||
1da177e4 LT |
1624 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1625 | { | |
1da177e4 | 1626 | struct nfs_open_context *ctx; |
864472e9 | 1627 | int ret; |
1da177e4 | 1628 | |
864472e9 TM |
1629 | ctx = nfs4_state_find_open_context(state); |
1630 | if (IS_ERR(ctx)) | |
1631 | return PTR_ERR(ctx); | |
539cd03a | 1632 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1633 | put_nfs_open_context(ctx); |
1634 | return ret; | |
1da177e4 LT |
1635 | } |
1636 | ||
aa53ed54 JL |
1637 | /* |
1638 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1639 | * fields corresponding to attributes that were used to store the verifier. | |
1640 | * Make sure we clobber those fields in the later setattr call | |
1641 | */ | |
1642 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1643 | { | |
1644 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1645 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1646 | sattr->ia_valid |= ATTR_ATIME; | |
1647 | ||
1648 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1649 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1650 | sattr->ia_valid |= ATTR_MTIME; | |
1651 | } | |
1652 | ||
1da177e4 | 1653 | /* |
24ac23ab | 1654 | * Returns a referenced nfs4_state |
1da177e4 | 1655 | */ |
dc0b027d | 1656 | 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 |
1657 | { |
1658 | struct nfs4_state_owner *sp; | |
1659 | struct nfs4_state *state = NULL; | |
1660 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1661 | struct nfs4_opendata *opendata; |
aac00a8d | 1662 | int status; |
1da177e4 LT |
1663 | |
1664 | /* Protect against reboot recovery conflicts */ | |
1da177e4 LT |
1665 | status = -ENOMEM; |
1666 | if (!(sp = nfs4_get_state_owner(server, cred))) { | |
1667 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); | |
1668 | goto out_err; | |
1669 | } | |
58d9714a TM |
1670 | status = nfs4_recover_expired_lease(server); |
1671 | if (status != 0) | |
b4454fe1 | 1672 | goto err_put_state_owner; |
aac00a8d | 1673 | if (path->dentry->d_inode != NULL) |
dc0b027d | 1674 | nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode); |
58d9714a | 1675 | status = -ENOMEM; |
8535b2be | 1676 | opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr, GFP_KERNEL); |
e56e0b78 | 1677 | if (opendata == NULL) |
95d35cb4 | 1678 | goto err_put_state_owner; |
1da177e4 | 1679 | |
aac00a8d TM |
1680 | if (path->dentry->d_inode != NULL) |
1681 | opendata->state = nfs4_get_open_state(path->dentry->d_inode, sp); | |
1682 | ||
24ac23ab | 1683 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1684 | if (status != 0) |
c6d00e63 | 1685 | goto err_opendata_put; |
1da177e4 | 1686 | |
24ac23ab | 1687 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1688 | status = PTR_ERR(state); |
1689 | if (IS_ERR(state)) | |
c6d00e63 | 1690 | goto err_opendata_put; |
0df5dd4a | 1691 | if (server->caps & NFS_CAP_POSIX_LOCK) |
8e469ebd | 1692 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); |
0ab64e0e TM |
1693 | |
1694 | if (opendata->o_arg.open_flags & O_EXCL) { | |
1695 | nfs4_exclusive_attrset(opendata, sattr); | |
1696 | ||
1697 | nfs_fattr_init(opendata->o_res.f_attr); | |
1698 | status = nfs4_do_setattr(state->inode, cred, | |
1699 | opendata->o_res.f_attr, sattr, | |
1700 | state); | |
1701 | if (status == 0) | |
1702 | nfs_setattr_update_inode(state->inode, sattr); | |
1703 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
1704 | } | |
c6d00e63 | 1705 | nfs4_opendata_put(opendata); |
1da177e4 | 1706 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1707 | *res = state; |
1708 | return 0; | |
c6d00e63 TM |
1709 | err_opendata_put: |
1710 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
1711 | err_put_state_owner: |
1712 | nfs4_put_state_owner(sp); | |
1da177e4 | 1713 | out_err: |
1da177e4 LT |
1714 | *res = NULL; |
1715 | return status; | |
1716 | } | |
1717 | ||
1718 | ||
dc0b027d | 1719 | 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 |
1720 | { |
1721 | struct nfs4_exception exception = { }; | |
1722 | struct nfs4_state *res; | |
1723 | int status; | |
1724 | ||
1725 | do { | |
dc0b027d | 1726 | status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res); |
1da177e4 LT |
1727 | if (status == 0) |
1728 | break; | |
1729 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1730 | * book-keeping w.r.t. state-changing operations | |
1731 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1732 | * It is actually a sign of a bug on the client or on the server. | |
1733 | * | |
1734 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1735 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1736 | * have unhashed the old state_owner for us, and that we can |
1737 | * therefore safely retry using a new one. We should still warn | |
1738 | * the user though... | |
1739 | */ | |
1740 | if (status == -NFS4ERR_BAD_SEQID) { | |
6f43ddcc TM |
1741 | printk(KERN_WARNING "NFS: v4 server %s " |
1742 | " returned a bad sequence-id error!\n", | |
1743 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1744 | exception.retry = 1; |
1745 | continue; | |
1746 | } | |
550f5747 TM |
1747 | /* |
1748 | * BAD_STATEID on OPEN means that the server cancelled our | |
1749 | * state before it received the OPEN_CONFIRM. | |
1750 | * Recover by retrying the request as per the discussion | |
1751 | * on Page 181 of RFC3530. | |
1752 | */ | |
1753 | if (status == -NFS4ERR_BAD_STATEID) { | |
1754 | exception.retry = 1; | |
1755 | continue; | |
1756 | } | |
aac00a8d TM |
1757 | if (status == -EAGAIN) { |
1758 | /* We must have found a delegation */ | |
1759 | exception.retry = 1; | |
1760 | continue; | |
1761 | } | |
1da177e4 LT |
1762 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1763 | status, &exception)); | |
1764 | } while (exception.retry); | |
1765 | return res; | |
1766 | } | |
1767 | ||
659bfcd6 TM |
1768 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1769 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1770 | struct nfs4_state *state) | |
1da177e4 | 1771 | { |
3e4f6290 | 1772 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1773 | struct nfs_setattrargs arg = { |
3e4f6290 | 1774 | .fh = NFS_FH(inode), |
1da177e4 LT |
1775 | .iap = sattr, |
1776 | .server = server, | |
1777 | .bitmask = server->attr_bitmask, | |
1778 | }; | |
1779 | struct nfs_setattrres res = { | |
1780 | .fattr = fattr, | |
1781 | .server = server, | |
1782 | }; | |
1783 | struct rpc_message msg = { | |
659bfcd6 TM |
1784 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
1785 | .rpc_argp = &arg, | |
1786 | .rpc_resp = &res, | |
1787 | .rpc_cred = cred, | |
1da177e4 | 1788 | }; |
26e976a8 | 1789 | unsigned long timestamp = jiffies; |
65e4308d | 1790 | int status; |
1da177e4 | 1791 | |
0e574af1 | 1792 | nfs_fattr_init(fattr); |
1da177e4 | 1793 | |
3e4f6290 TM |
1794 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) { |
1795 | /* Use that stateid */ | |
1796 | } else if (state != NULL) { | |
77041ed9 | 1797 | nfs4_copy_stateid(&arg.stateid, state, current->files, current->tgid); |
08e9eac4 | 1798 | } else |
1da177e4 LT |
1799 | memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid)); |
1800 | ||
cccef3b9 | 1801 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
26e976a8 TM |
1802 | if (status == 0 && state != NULL) |
1803 | renew_lease(server, timestamp); | |
65e4308d | 1804 | return status; |
1da177e4 LT |
1805 | } |
1806 | ||
659bfcd6 TM |
1807 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1808 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1809 | struct nfs4_state *state) | |
1da177e4 | 1810 | { |
3e4f6290 | 1811 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
1812 | struct nfs4_exception exception = { }; |
1813 | int err; | |
1814 | do { | |
1815 | err = nfs4_handle_exception(server, | |
659bfcd6 | 1816 | _nfs4_do_setattr(inode, cred, fattr, sattr, state), |
1da177e4 LT |
1817 | &exception); |
1818 | } while (exception.retry); | |
1819 | return err; | |
1820 | } | |
1821 | ||
1822 | struct nfs4_closedata { | |
4a35bd41 | 1823 | struct path path; |
1da177e4 LT |
1824 | struct inode *inode; |
1825 | struct nfs4_state *state; | |
1826 | struct nfs_closeargs arg; | |
1827 | struct nfs_closeres res; | |
516a6af6 | 1828 | struct nfs_fattr fattr; |
26e976a8 | 1829 | unsigned long timestamp; |
1da177e4 LT |
1830 | }; |
1831 | ||
963d8fe5 | 1832 | static void nfs4_free_closedata(void *data) |
9512135d | 1833 | { |
963d8fe5 TM |
1834 | struct nfs4_closedata *calldata = data; |
1835 | struct nfs4_state_owner *sp = calldata->state->owner; | |
9512135d TM |
1836 | |
1837 | nfs4_put_open_state(calldata->state); | |
1838 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 1839 | nfs4_put_state_owner(sp); |
31f31db1 | 1840 | path_put(&calldata->path); |
9512135d TM |
1841 | kfree(calldata); |
1842 | } | |
1843 | ||
88069f77 TM |
1844 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
1845 | fmode_t fmode) | |
1846 | { | |
1847 | spin_lock(&state->owner->so_lock); | |
1848 | if (!(fmode & FMODE_READ)) | |
1849 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1850 | if (!(fmode & FMODE_WRITE)) | |
1851 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1852 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1853 | spin_unlock(&state->owner->so_lock); | |
1854 | } | |
1855 | ||
963d8fe5 | 1856 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 1857 | { |
963d8fe5 | 1858 | struct nfs4_closedata *calldata = data; |
1da177e4 | 1859 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
1860 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
1861 | ||
14516c3a TM |
1862 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
1863 | return; | |
1da177e4 LT |
1864 | /* hmm. we are done with the inode, and in the process of freeing |
1865 | * the state_owner. we keep this around to process errors | |
1866 | */ | |
1da177e4 LT |
1867 | switch (task->tk_status) { |
1868 | case 0: | |
45328c35 | 1869 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 1870 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
1871 | nfs4_close_clear_stateid_flags(state, |
1872 | calldata->arg.fmode); | |
1da177e4 LT |
1873 | break; |
1874 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
1875 | case -NFS4ERR_OLD_STATEID: |
1876 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 1877 | case -NFS4ERR_EXPIRED: |
dc0b027d | 1878 | if (calldata->arg.fmode == 0) |
9e33bed5 | 1879 | break; |
1da177e4 | 1880 | default: |
72211dbe TM |
1881 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
1882 | rpc_restart_call_prepare(task); | |
1da177e4 | 1883 | } |
72211dbe | 1884 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 1885 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
1da177e4 LT |
1886 | } |
1887 | ||
4ce70ada | 1888 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 1889 | { |
4ce70ada | 1890 | struct nfs4_closedata *calldata = data; |
9512135d | 1891 | struct nfs4_state *state = calldata->state; |
88069f77 | 1892 | int call_close = 0; |
9512135d | 1893 | |
963d8fe5 | 1894 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 1895 | return; |
003707c7 | 1896 | |
88069f77 TM |
1897 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
1898 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 1899 | spin_lock(&state->owner->so_lock); |
003707c7 | 1900 | /* Calculate the change in open mode */ |
e7616923 | 1901 | if (state->n_rdwr == 0) { |
003707c7 | 1902 | if (state->n_rdonly == 0) { |
88069f77 TM |
1903 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
1904 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
1905 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
1906 | } |
1907 | if (state->n_wronly == 0) { | |
88069f77 TM |
1908 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
1909 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
1910 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 1911 | } |
e7616923 | 1912 | } |
4cecb76f | 1913 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
1914 | |
1915 | if (!call_close) { | |
963d8fe5 TM |
1916 | /* Note: exit _without_ calling nfs4_close_done */ |
1917 | task->tk_action = NULL; | |
9512135d TM |
1918 | return; |
1919 | } | |
88069f77 TM |
1920 | |
1921 | if (calldata->arg.fmode == 0) | |
1922 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; | |
1923 | ||
516a6af6 | 1924 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 1925 | calldata->timestamp = jiffies; |
035168ab | 1926 | if (nfs4_setup_sequence(NFS_SERVER(calldata->inode), |
19ddab06 AA |
1927 | &calldata->arg.seq_args, &calldata->res.seq_res, |
1928 | 1, task)) | |
1929 | return; | |
5138fde0 | 1930 | rpc_call_start(task); |
1da177e4 LT |
1931 | } |
1932 | ||
963d8fe5 | 1933 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 1934 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
1935 | .rpc_call_done = nfs4_close_done, |
1936 | .rpc_release = nfs4_free_closedata, | |
1937 | }; | |
1938 | ||
1da177e4 LT |
1939 | /* |
1940 | * It is possible for data to be read/written from a mem-mapped file | |
1941 | * after the sys_close call (which hits the vfs layer as a flush). | |
1942 | * This means that we can't safely call nfsv4 close on a file until | |
1943 | * the inode is cleared. This in turn means that we are not good | |
1944 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
1945 | * share state even when we are done with one of the three share | |
1946 | * stateid's in the inode. | |
1947 | * | |
1948 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
1949 | */ | |
8535b2be | 1950 | int nfs4_do_close(struct path *path, struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 1951 | { |
4a35bd41 | 1952 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 1953 | struct nfs4_closedata *calldata; |
b39e625b TM |
1954 | struct nfs4_state_owner *sp = state->owner; |
1955 | struct rpc_task *task; | |
5138fde0 TM |
1956 | struct rpc_message msg = { |
1957 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
1958 | .rpc_cred = state->owner->so_cred, | |
1959 | }; | |
c970aa85 TM |
1960 | struct rpc_task_setup task_setup_data = { |
1961 | .rpc_client = server->client, | |
5138fde0 | 1962 | .rpc_message = &msg, |
c970aa85 | 1963 | .callback_ops = &nfs4_close_ops, |
101070ca | 1964 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1965 | .flags = RPC_TASK_ASYNC, |
1966 | }; | |
9512135d | 1967 | int status = -ENOMEM; |
1da177e4 | 1968 | |
8535b2be | 1969 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 1970 | if (calldata == NULL) |
9512135d | 1971 | goto out; |
4a35bd41 | 1972 | calldata->inode = state->inode; |
1da177e4 | 1973 | calldata->state = state; |
4a35bd41 | 1974 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 1975 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 1976 | /* Serialization for the sequence id */ |
8535b2be | 1977 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
1978 | if (calldata->arg.seqid == NULL) |
1979 | goto out_free_calldata; | |
dc0b027d | 1980 | calldata->arg.fmode = 0; |
a65318bf | 1981 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 1982 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 1983 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 1984 | calldata->res.server = server; |
f6948697 AV |
1985 | path_get(path); |
1986 | calldata->path = *path; | |
9512135d | 1987 | |
1174dd1f TM |
1988 | msg.rpc_argp = &calldata->arg; |
1989 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
1990 | task_setup_data.callback_data = calldata; |
1991 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
1992 | if (IS_ERR(task)) |
1993 | return PTR_ERR(task); | |
a49c3c77 TM |
1994 | status = 0; |
1995 | if (wait) | |
1996 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 1997 | rpc_put_task(task); |
a49c3c77 | 1998 | return status; |
9512135d TM |
1999 | out_free_calldata: |
2000 | kfree(calldata); | |
2001 | out: | |
b39e625b TM |
2002 | nfs4_put_open_state(state); |
2003 | nfs4_put_state_owner(sp); | |
9512135d | 2004 | return status; |
1da177e4 LT |
2005 | } |
2006 | ||
2b484297 | 2007 | static struct inode * |
cd9a1c0e | 2008 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2009 | { |
1da177e4 | 2010 | struct nfs4_state *state; |
1da177e4 | 2011 | |
565277f6 | 2012 | /* Protect against concurrent sillydeletes */ |
cd9a1c0e | 2013 | state = nfs4_do_open(dir, &ctx->path, ctx->mode, open_flags, attr, ctx->cred); |
f46e0bd3 TM |
2014 | if (IS_ERR(state)) |
2015 | return ERR_CAST(state); | |
cd9a1c0e | 2016 | ctx->state = state; |
f46e0bd3 | 2017 | return igrab(state->inode); |
1da177e4 LT |
2018 | } |
2019 | ||
1185a552 | 2020 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2021 | { |
2022 | if (ctx->state == NULL) | |
2023 | return; | |
2024 | if (is_sync) | |
2025 | nfs4_close_sync(&ctx->path, ctx->state, ctx->mode); | |
2026 | else | |
2027 | nfs4_close_state(&ctx->path, ctx->state, ctx->mode); | |
2028 | } | |
1da177e4 LT |
2029 | |
2030 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2031 | { | |
43652ad5 BH |
2032 | struct nfs4_server_caps_arg args = { |
2033 | .fhandle = fhandle, | |
2034 | }; | |
1da177e4 LT |
2035 | struct nfs4_server_caps_res res = {}; |
2036 | struct rpc_message msg = { | |
2037 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2038 | .rpc_argp = &args, |
1da177e4 LT |
2039 | .rpc_resp = &res, |
2040 | }; | |
2041 | int status; | |
2042 | ||
cccef3b9 | 2043 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2044 | if (status == 0) { |
2045 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2046 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2047 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2048 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2049 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2050 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2051 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2052 | server->caps |= NFS_CAP_ACLS; | |
2053 | if (res.has_links != 0) | |
2054 | server->caps |= NFS_CAP_HARDLINKS; | |
2055 | if (res.has_symlinks != 0) | |
2056 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2057 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2058 | server->caps |= NFS_CAP_FILEID; | |
2059 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2060 | server->caps |= NFS_CAP_MODE; | |
2061 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2062 | server->caps |= NFS_CAP_NLINK; | |
2063 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2064 | server->caps |= NFS_CAP_OWNER; | |
2065 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2066 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2067 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2068 | server->caps |= NFS_CAP_ATIME; | |
2069 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2070 | server->caps |= NFS_CAP_CTIME; | |
2071 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2072 | server->caps |= NFS_CAP_MTIME; | |
2073 | ||
a65318bf TM |
2074 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2075 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2076 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 LT |
2077 | server->acl_bitmask = res.acl_bitmask; |
2078 | } | |
cccef3b9 | 2079 | |
1da177e4 LT |
2080 | return status; |
2081 | } | |
2082 | ||
55a97593 | 2083 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2084 | { |
2085 | struct nfs4_exception exception = { }; | |
2086 | int err; | |
2087 | do { | |
2088 | err = nfs4_handle_exception(server, | |
2089 | _nfs4_server_capabilities(server, fhandle), | |
2090 | &exception); | |
2091 | } while (exception.retry); | |
2092 | return err; | |
2093 | } | |
2094 | ||
2095 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2096 | struct nfs_fsinfo *info) | |
2097 | { | |
1da177e4 LT |
2098 | struct nfs4_lookup_root_arg args = { |
2099 | .bitmask = nfs4_fattr_bitmap, | |
2100 | }; | |
2101 | struct nfs4_lookup_res res = { | |
2102 | .server = server, | |
0e574af1 | 2103 | .fattr = info->fattr, |
1da177e4 LT |
2104 | .fh = fhandle, |
2105 | }; | |
2106 | struct rpc_message msg = { | |
2107 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2108 | .rpc_argp = &args, | |
2109 | .rpc_resp = &res, | |
2110 | }; | |
008f55d0 | 2111 | |
0e574af1 | 2112 | nfs_fattr_init(info->fattr); |
fccba804 | 2113 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2114 | } |
2115 | ||
2116 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2117 | struct nfs_fsinfo *info) | |
2118 | { | |
2119 | struct nfs4_exception exception = { }; | |
2120 | int err; | |
2121 | do { | |
2122 | err = nfs4_handle_exception(server, | |
2123 | _nfs4_lookup_root(server, fhandle, info), | |
2124 | &exception); | |
2125 | } while (exception.retry); | |
2126 | return err; | |
2127 | } | |
2128 | ||
54ceac45 DH |
2129 | /* |
2130 | * get the file handle for the "/" directory on the server | |
2131 | */ | |
1da177e4 | 2132 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2133 | struct nfs_fsinfo *info) |
1da177e4 | 2134 | { |
1da177e4 LT |
2135 | int status; |
2136 | ||
1da177e4 | 2137 | status = nfs4_lookup_root(server, fhandle, info); |
1da177e4 LT |
2138 | if (status == 0) |
2139 | status = nfs4_server_capabilities(server, fhandle); | |
2140 | if (status == 0) | |
2141 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2142 | return nfs4_map_errors(status); |
1da177e4 LT |
2143 | } |
2144 | ||
6b97fd3d MN |
2145 | /* |
2146 | * Get locations and (maybe) other attributes of a referral. | |
2147 | * Note that we'll actually follow the referral later when | |
2148 | * we detect fsid mismatch in inode revalidation | |
2149 | */ | |
56659e99 | 2150 | static int nfs4_get_referral(struct inode *dir, const struct qstr *name, struct nfs_fattr *fattr, struct nfs_fh *fhandle) |
6b97fd3d MN |
2151 | { |
2152 | int status = -ENOMEM; | |
2153 | struct page *page = NULL; | |
2154 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2155 | |
2156 | page = alloc_page(GFP_KERNEL); | |
2157 | if (page == NULL) | |
2158 | goto out; | |
2159 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2160 | if (locations == NULL) | |
2161 | goto out; | |
2162 | ||
c228fd3a | 2163 | status = nfs4_proc_fs_locations(dir, name, locations, page); |
6b97fd3d MN |
2164 | if (status != 0) |
2165 | goto out; | |
2166 | /* Make sure server returned a different fsid for the referral */ | |
2167 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
3110ff80 | 2168 | dprintk("%s: server did not return a different fsid for a referral at %s\n", __func__, name->name); |
6b97fd3d MN |
2169 | status = -EIO; |
2170 | goto out; | |
2171 | } | |
2172 | ||
2173 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); | |
2174 | fattr->valid |= NFS_ATTR_FATTR_V4_REFERRAL; | |
2175 | if (!fattr->mode) | |
2176 | fattr->mode = S_IFDIR; | |
2177 | memset(fhandle, 0, sizeof(struct nfs_fh)); | |
2178 | out: | |
2179 | if (page) | |
2180 | __free_page(page); | |
5d7ca35a | 2181 | kfree(locations); |
6b97fd3d MN |
2182 | return status; |
2183 | } | |
2184 | ||
1da177e4 LT |
2185 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2186 | { | |
2187 | struct nfs4_getattr_arg args = { | |
2188 | .fh = fhandle, | |
2189 | .bitmask = server->attr_bitmask, | |
2190 | }; | |
2191 | struct nfs4_getattr_res res = { | |
2192 | .fattr = fattr, | |
2193 | .server = server, | |
2194 | }; | |
2195 | struct rpc_message msg = { | |
2196 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2197 | .rpc_argp = &args, | |
2198 | .rpc_resp = &res, | |
2199 | }; | |
2200 | ||
0e574af1 | 2201 | nfs_fattr_init(fattr); |
cccef3b9 | 2202 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2203 | } |
2204 | ||
2205 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2206 | { | |
2207 | struct nfs4_exception exception = { }; | |
2208 | int err; | |
2209 | do { | |
2210 | err = nfs4_handle_exception(server, | |
2211 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2212 | &exception); | |
2213 | } while (exception.retry); | |
2214 | return err; | |
2215 | } | |
2216 | ||
2217 | /* | |
2218 | * The file is not closed if it is opened due to the a request to change | |
2219 | * the size of the file. The open call will not be needed once the | |
2220 | * VFS layer lookup-intents are implemented. | |
2221 | * | |
2222 | * Close is called when the inode is destroyed. | |
2223 | * If we haven't opened the file for O_WRONLY, we | |
2224 | * need to in the size_change case to obtain a stateid. | |
2225 | * | |
2226 | * Got race? | |
2227 | * Because OPEN is always done by name in nfsv4, it is | |
2228 | * possible that we opened a different file by the same | |
2229 | * name. We can recognize this race condition, but we | |
2230 | * can't do anything about it besides returning an error. | |
2231 | * | |
2232 | * This will be fixed with VFS changes (lookup-intent). | |
2233 | */ | |
2234 | static int | |
2235 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2236 | struct iattr *sattr) | |
2237 | { | |
08e9eac4 | 2238 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2239 | struct rpc_cred *cred = NULL; |
d530838b | 2240 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2241 | int status; |
2242 | ||
0e574af1 | 2243 | nfs_fattr_init(fattr); |
1da177e4 | 2244 | |
d530838b | 2245 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2246 | if (sattr->ia_valid & ATTR_FILE) { |
2247 | struct nfs_open_context *ctx; | |
2248 | ||
2249 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2250 | if (ctx) { |
2251 | cred = ctx->cred; | |
2252 | state = ctx->state; | |
2253 | } | |
659bfcd6 | 2254 | } |
08e9eac4 | 2255 | |
659bfcd6 | 2256 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2257 | if (status == 0) |
2258 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2259 | return status; |
2260 | } | |
2261 | ||
56659e99 TM |
2262 | static int _nfs4_proc_lookupfh(struct nfs_server *server, const struct nfs_fh *dirfh, |
2263 | const struct qstr *name, struct nfs_fh *fhandle, | |
2b3de441 DH |
2264 | struct nfs_fattr *fattr) |
2265 | { | |
2266 | int status; | |
2267 | struct nfs4_lookup_arg args = { | |
2268 | .bitmask = server->attr_bitmask, | |
2269 | .dir_fh = dirfh, | |
2270 | .name = name, | |
2271 | }; | |
2272 | struct nfs4_lookup_res res = { | |
2273 | .server = server, | |
2274 | .fattr = fattr, | |
2275 | .fh = fhandle, | |
2276 | }; | |
2277 | struct rpc_message msg = { | |
2278 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2279 | .rpc_argp = &args, | |
2280 | .rpc_resp = &res, | |
2281 | }; | |
2282 | ||
2283 | nfs_fattr_init(fattr); | |
2284 | ||
2285 | dprintk("NFS call lookupfh %s\n", name->name); | |
cccef3b9 | 2286 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
2b3de441 | 2287 | dprintk("NFS reply lookupfh: %d\n", status); |
2b3de441 DH |
2288 | return status; |
2289 | } | |
2290 | ||
2291 | static int nfs4_proc_lookupfh(struct nfs_server *server, struct nfs_fh *dirfh, | |
2292 | struct qstr *name, struct nfs_fh *fhandle, | |
2293 | struct nfs_fattr *fattr) | |
2294 | { | |
2295 | struct nfs4_exception exception = { }; | |
2296 | int err; | |
2297 | do { | |
4e56e082 TM |
2298 | err = _nfs4_proc_lookupfh(server, dirfh, name, fhandle, fattr); |
2299 | /* FIXME: !!!! */ | |
2300 | if (err == -NFS4ERR_MOVED) { | |
2301 | err = -EREMOTE; | |
2302 | break; | |
2303 | } | |
2304 | err = nfs4_handle_exception(server, err, &exception); | |
2b3de441 DH |
2305 | } while (exception.retry); |
2306 | return err; | |
2307 | } | |
2308 | ||
56659e99 | 2309 | static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, |
1da177e4 LT |
2310 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2311 | { | |
4e56e082 | 2312 | int status; |
1da177e4 LT |
2313 | |
2314 | dprintk("NFS call lookup %s\n", name->name); | |
4e56e082 | 2315 | status = _nfs4_proc_lookupfh(NFS_SERVER(dir), NFS_FH(dir), name, fhandle, fattr); |
6b97fd3d MN |
2316 | if (status == -NFS4ERR_MOVED) |
2317 | status = nfs4_get_referral(dir, name, fattr, fhandle); | |
1da177e4 LT |
2318 | dprintk("NFS reply lookup: %d\n", status); |
2319 | return status; | |
2320 | } | |
2321 | ||
2322 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2323 | { | |
2324 | struct nfs4_exception exception = { }; | |
2325 | int err; | |
2326 | do { | |
2327 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2328 | _nfs4_proc_lookup(dir, name, fhandle, fattr), | |
2329 | &exception); | |
2330 | } while (exception.retry); | |
2331 | return err; | |
2332 | } | |
2333 | ||
2334 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2335 | { | |
76b32999 | 2336 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2337 | struct nfs4_accessargs args = { |
2338 | .fh = NFS_FH(inode), | |
76b32999 TM |
2339 | .bitmask = server->attr_bitmask, |
2340 | }; | |
2341 | struct nfs4_accessres res = { | |
2342 | .server = server, | |
1da177e4 | 2343 | }; |
1da177e4 LT |
2344 | struct rpc_message msg = { |
2345 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2346 | .rpc_argp = &args, | |
2347 | .rpc_resp = &res, | |
2348 | .rpc_cred = entry->cred, | |
2349 | }; | |
2350 | int mode = entry->mask; | |
2351 | int status; | |
2352 | ||
2353 | /* | |
2354 | * Determine which access bits we want to ask for... | |
2355 | */ | |
2356 | if (mode & MAY_READ) | |
2357 | args.access |= NFS4_ACCESS_READ; | |
2358 | if (S_ISDIR(inode->i_mode)) { | |
2359 | if (mode & MAY_WRITE) | |
2360 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2361 | if (mode & MAY_EXEC) | |
2362 | args.access |= NFS4_ACCESS_LOOKUP; | |
2363 | } else { | |
2364 | if (mode & MAY_WRITE) | |
2365 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2366 | if (mode & MAY_EXEC) | |
2367 | args.access |= NFS4_ACCESS_EXECUTE; | |
2368 | } | |
c407d41a TM |
2369 | |
2370 | res.fattr = nfs_alloc_fattr(); | |
2371 | if (res.fattr == NULL) | |
2372 | return -ENOMEM; | |
2373 | ||
cccef3b9 | 2374 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2375 | if (!status) { |
2376 | entry->mask = 0; | |
2377 | if (res.access & NFS4_ACCESS_READ) | |
2378 | entry->mask |= MAY_READ; | |
2379 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
2380 | entry->mask |= MAY_WRITE; | |
2381 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
2382 | entry->mask |= MAY_EXEC; | |
c407d41a | 2383 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2384 | } |
c407d41a | 2385 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2386 | return status; |
2387 | } | |
2388 | ||
2389 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2390 | { | |
2391 | struct nfs4_exception exception = { }; | |
2392 | int err; | |
2393 | do { | |
2394 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2395 | _nfs4_proc_access(inode, entry), | |
2396 | &exception); | |
2397 | } while (exception.retry); | |
2398 | return err; | |
2399 | } | |
2400 | ||
2401 | /* | |
2402 | * TODO: For the time being, we don't try to get any attributes | |
2403 | * along with any of the zero-copy operations READ, READDIR, | |
2404 | * READLINK, WRITE. | |
2405 | * | |
2406 | * In the case of the first three, we want to put the GETATTR | |
2407 | * after the read-type operation -- this is because it is hard | |
2408 | * to predict the length of a GETATTR response in v4, and thus | |
2409 | * align the READ data correctly. This means that the GETATTR | |
2410 | * may end up partially falling into the page cache, and we should | |
2411 | * shift it into the 'tail' of the xdr_buf before processing. | |
2412 | * To do this efficiently, we need to know the total length | |
2413 | * of data received, which doesn't seem to be available outside | |
2414 | * of the RPC layer. | |
2415 | * | |
2416 | * In the case of WRITE, we also want to put the GETATTR after | |
2417 | * the operation -- in this case because we want to make sure | |
2418 | * we get the post-operation mtime and size. This means that | |
2419 | * we can't use xdr_encode_pages() as written: we need a variant | |
2420 | * of it which would leave room in the 'tail' iovec. | |
2421 | * | |
2422 | * Both of these changes to the XDR layer would in fact be quite | |
2423 | * minor, but I decided to leave them for a subsequent patch. | |
2424 | */ | |
2425 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2426 | unsigned int pgbase, unsigned int pglen) | |
2427 | { | |
2428 | struct nfs4_readlink args = { | |
2429 | .fh = NFS_FH(inode), | |
2430 | .pgbase = pgbase, | |
2431 | .pglen = pglen, | |
2432 | .pages = &page, | |
2433 | }; | |
f50c7000 | 2434 | struct nfs4_readlink_res res; |
1da177e4 LT |
2435 | struct rpc_message msg = { |
2436 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2437 | .rpc_argp = &args, | |
f50c7000 | 2438 | .rpc_resp = &res, |
1da177e4 LT |
2439 | }; |
2440 | ||
cccef3b9 | 2441 | return nfs4_call_sync(NFS_SERVER(inode), &msg, &args, &res, 0); |
1da177e4 LT |
2442 | } |
2443 | ||
2444 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2445 | unsigned int pgbase, unsigned int pglen) | |
2446 | { | |
2447 | struct nfs4_exception exception = { }; | |
2448 | int err; | |
2449 | do { | |
2450 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2451 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2452 | &exception); | |
2453 | } while (exception.retry); | |
2454 | return err; | |
2455 | } | |
2456 | ||
1da177e4 LT |
2457 | /* |
2458 | * Got race? | |
2459 | * We will need to arrange for the VFS layer to provide an atomic open. | |
2460 | * Until then, this create/open method is prone to inefficiency and race | |
2461 | * conditions due to the lookup, create, and open VFS calls from sys_open() | |
2462 | * placed on the wire. | |
2463 | * | |
2464 | * Given the above sorry state of affairs, I'm simply sending an OPEN. | |
2465 | * The file will be opened again in the subsequent VFS open call | |
2466 | * (nfs4_proc_file_open). | |
2467 | * | |
2468 | * The open for read will just hang around to be used by any process that | |
2469 | * opens the file O_RDONLY. This will all be resolved with the VFS changes. | |
2470 | */ | |
2471 | ||
2472 | static int | |
2473 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
c0204fd2 | 2474 | int flags, struct nfs_open_context *ctx) |
1da177e4 | 2475 | { |
c0204fd2 | 2476 | struct path my_path = { |
ad389da7 TM |
2477 | .dentry = dentry, |
2478 | }; | |
c0204fd2 | 2479 | struct path *path = &my_path; |
1da177e4 | 2480 | struct nfs4_state *state; |
c0204fd2 TM |
2481 | struct rpc_cred *cred = NULL; |
2482 | fmode_t fmode = 0; | |
1da177e4 LT |
2483 | int status = 0; |
2484 | ||
c0204fd2 TM |
2485 | if (ctx != NULL) { |
2486 | cred = ctx->cred; | |
2487 | path = &ctx->path; | |
2488 | fmode = ctx->mode; | |
1da177e4 | 2489 | } |
a8a5da99 | 2490 | sattr->ia_mode &= ~current_umask(); |
c0204fd2 | 2491 | state = nfs4_do_open(dir, path, fmode, flags, sattr, cred); |
d4d9cdcb | 2492 | d_drop(dentry); |
1da177e4 LT |
2493 | if (IS_ERR(state)) { |
2494 | status = PTR_ERR(state); | |
c0204fd2 | 2495 | goto out; |
1da177e4 | 2496 | } |
d4d9cdcb | 2497 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2498 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
c0204fd2 TM |
2499 | if (ctx != NULL) |
2500 | ctx->state = state; | |
02a913a7 | 2501 | else |
c0204fd2 | 2502 | nfs4_close_sync(path, state, fmode); |
1da177e4 LT |
2503 | out: |
2504 | return status; | |
2505 | } | |
2506 | ||
2507 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2508 | { | |
16e42959 | 2509 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2510 | struct nfs_removeargs args = { |
1da177e4 | 2511 | .fh = NFS_FH(dir), |
4fdc17b2 TM |
2512 | .name.len = name->len, |
2513 | .name.name = name->name, | |
16e42959 TM |
2514 | .bitmask = server->attr_bitmask, |
2515 | }; | |
4fdc17b2 | 2516 | struct nfs_removeres res = { |
16e42959 | 2517 | .server = server, |
1da177e4 | 2518 | }; |
1da177e4 | 2519 | struct rpc_message msg = { |
4fdc17b2 TM |
2520 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2521 | .rpc_argp = &args, | |
2522 | .rpc_resp = &res, | |
1da177e4 | 2523 | }; |
d346890b TM |
2524 | int status = -ENOMEM; |
2525 | ||
2526 | res.dir_attr = nfs_alloc_fattr(); | |
2527 | if (res.dir_attr == NULL) | |
2528 | goto out; | |
1da177e4 | 2529 | |
cccef3b9 | 2530 | status = nfs4_call_sync(server, &msg, &args, &res, 1); |
16e42959 TM |
2531 | if (status == 0) { |
2532 | update_changeattr(dir, &res.cinfo); | |
d346890b | 2533 | nfs_post_op_update_inode(dir, res.dir_attr); |
16e42959 | 2534 | } |
d346890b TM |
2535 | nfs_free_fattr(res.dir_attr); |
2536 | out: | |
1da177e4 LT |
2537 | return status; |
2538 | } | |
2539 | ||
2540 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2541 | { | |
2542 | struct nfs4_exception exception = { }; | |
2543 | int err; | |
2544 | do { | |
2545 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2546 | _nfs4_proc_remove(dir, name), | |
2547 | &exception); | |
2548 | } while (exception.retry); | |
2549 | return err; | |
2550 | } | |
2551 | ||
e4eff1a6 | 2552 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2553 | { |
e4eff1a6 TM |
2554 | struct nfs_server *server = NFS_SERVER(dir); |
2555 | struct nfs_removeargs *args = msg->rpc_argp; | |
2556 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2557 | |
a65318bf | 2558 | args->bitmask = server->cache_consistency_bitmask; |
e4eff1a6 | 2559 | res->server = server; |
dfb4f309 | 2560 | res->seq_res.sr_slot = NULL; |
1da177e4 | 2561 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
1da177e4 LT |
2562 | } |
2563 | ||
e4eff1a6 | 2564 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2565 | { |
e4eff1a6 TM |
2566 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2567 | ||
14516c3a TM |
2568 | if (!nfs4_sequence_done(task, &res->seq_res)) |
2569 | return 0; | |
9e33bed5 | 2570 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
2571 | return 0; |
2572 | update_changeattr(dir, &res->cinfo); | |
d346890b | 2573 | nfs_post_op_update_inode(dir, res->dir_attr); |
e4eff1a6 | 2574 | return 1; |
1da177e4 LT |
2575 | } |
2576 | ||
d3d4152a JL |
2577 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
2578 | { | |
2579 | struct nfs_server *server = NFS_SERVER(dir); | |
2580 | struct nfs_renameargs *arg = msg->rpc_argp; | |
2581 | struct nfs_renameres *res = msg->rpc_resp; | |
2582 | ||
2583 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
2584 | arg->bitmask = server->attr_bitmask; | |
2585 | res->server = server; | |
2586 | } | |
2587 | ||
2588 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
2589 | struct inode *new_dir) | |
2590 | { | |
2591 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
2592 | ||
2593 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
2594 | return 0; | |
2595 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
2596 | return 0; | |
2597 | ||
2598 | update_changeattr(old_dir, &res->old_cinfo); | |
2599 | nfs_post_op_update_inode(old_dir, res->old_fattr); | |
2600 | update_changeattr(new_dir, &res->new_cinfo); | |
2601 | nfs_post_op_update_inode(new_dir, res->new_fattr); | |
2602 | return 1; | |
2603 | } | |
2604 | ||
1da177e4 LT |
2605 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
2606 | struct inode *new_dir, struct qstr *new_name) | |
2607 | { | |
6caf2c82 | 2608 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 2609 | struct nfs_renameargs arg = { |
1da177e4 LT |
2610 | .old_dir = NFS_FH(old_dir), |
2611 | .new_dir = NFS_FH(new_dir), | |
2612 | .old_name = old_name, | |
2613 | .new_name = new_name, | |
6caf2c82 TM |
2614 | .bitmask = server->attr_bitmask, |
2615 | }; | |
e8582a8b | 2616 | struct nfs_renameres res = { |
6caf2c82 | 2617 | .server = server, |
1da177e4 | 2618 | }; |
1da177e4 LT |
2619 | struct rpc_message msg = { |
2620 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2621 | .rpc_argp = &arg, | |
2622 | .rpc_resp = &res, | |
2623 | }; | |
011fff72 | 2624 | int status = -ENOMEM; |
1da177e4 | 2625 | |
011fff72 TM |
2626 | res.old_fattr = nfs_alloc_fattr(); |
2627 | res.new_fattr = nfs_alloc_fattr(); | |
2628 | if (res.old_fattr == NULL || res.new_fattr == NULL) | |
2629 | goto out; | |
1da177e4 | 2630 | |
011fff72 | 2631 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
1da177e4 LT |
2632 | if (!status) { |
2633 | update_changeattr(old_dir, &res.old_cinfo); | |
6caf2c82 | 2634 | nfs_post_op_update_inode(old_dir, res.old_fattr); |
1da177e4 | 2635 | update_changeattr(new_dir, &res.new_cinfo); |
6caf2c82 | 2636 | nfs_post_op_update_inode(new_dir, res.new_fattr); |
1da177e4 | 2637 | } |
011fff72 TM |
2638 | out: |
2639 | nfs_free_fattr(res.new_fattr); | |
2640 | nfs_free_fattr(res.old_fattr); | |
1da177e4 LT |
2641 | return status; |
2642 | } | |
2643 | ||
2644 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2645 | struct inode *new_dir, struct qstr *new_name) | |
2646 | { | |
2647 | struct nfs4_exception exception = { }; | |
2648 | int err; | |
2649 | do { | |
2650 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2651 | _nfs4_proc_rename(old_dir, old_name, | |
2652 | new_dir, new_name), | |
2653 | &exception); | |
2654 | } while (exception.retry); | |
2655 | return err; | |
2656 | } | |
2657 | ||
2658 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2659 | { | |
91ba2eee | 2660 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2661 | struct nfs4_link_arg arg = { |
2662 | .fh = NFS_FH(inode), | |
2663 | .dir_fh = NFS_FH(dir), | |
2664 | .name = name, | |
91ba2eee TM |
2665 | .bitmask = server->attr_bitmask, |
2666 | }; | |
91ba2eee TM |
2667 | struct nfs4_link_res res = { |
2668 | .server = server, | |
1da177e4 | 2669 | }; |
1da177e4 LT |
2670 | struct rpc_message msg = { |
2671 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
2672 | .rpc_argp = &arg, | |
91ba2eee | 2673 | .rpc_resp = &res, |
1da177e4 | 2674 | }; |
136f2627 TM |
2675 | int status = -ENOMEM; |
2676 | ||
2677 | res.fattr = nfs_alloc_fattr(); | |
2678 | res.dir_attr = nfs_alloc_fattr(); | |
2679 | if (res.fattr == NULL || res.dir_attr == NULL) | |
2680 | goto out; | |
1da177e4 | 2681 | |
cccef3b9 | 2682 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
91ba2eee TM |
2683 | if (!status) { |
2684 | update_changeattr(dir, &res.cinfo); | |
2685 | nfs_post_op_update_inode(dir, res.dir_attr); | |
73a3d07c | 2686 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 2687 | } |
136f2627 TM |
2688 | out: |
2689 | nfs_free_fattr(res.dir_attr); | |
2690 | nfs_free_fattr(res.fattr); | |
1da177e4 LT |
2691 | return status; |
2692 | } | |
2693 | ||
2694 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2695 | { | |
2696 | struct nfs4_exception exception = { }; | |
2697 | int err; | |
2698 | do { | |
2699 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2700 | _nfs4_proc_link(inode, dir, name), | |
2701 | &exception); | |
2702 | } while (exception.retry); | |
2703 | return err; | |
2704 | } | |
2705 | ||
57dc9a57 TM |
2706 | struct nfs4_createdata { |
2707 | struct rpc_message msg; | |
2708 | struct nfs4_create_arg arg; | |
2709 | struct nfs4_create_res res; | |
2710 | struct nfs_fh fh; | |
2711 | struct nfs_fattr fattr; | |
2712 | struct nfs_fattr dir_fattr; | |
2713 | }; | |
2714 | ||
2715 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
2716 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
2717 | { | |
2718 | struct nfs4_createdata *data; | |
2719 | ||
2720 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
2721 | if (data != NULL) { | |
2722 | struct nfs_server *server = NFS_SERVER(dir); | |
2723 | ||
2724 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
2725 | data->msg.rpc_argp = &data->arg; | |
2726 | data->msg.rpc_resp = &data->res; | |
2727 | data->arg.dir_fh = NFS_FH(dir); | |
2728 | data->arg.server = server; | |
2729 | data->arg.name = name; | |
2730 | data->arg.attrs = sattr; | |
2731 | data->arg.ftype = ftype; | |
2732 | data->arg.bitmask = server->attr_bitmask; | |
2733 | data->res.server = server; | |
2734 | data->res.fh = &data->fh; | |
2735 | data->res.fattr = &data->fattr; | |
2736 | data->res.dir_fattr = &data->dir_fattr; | |
2737 | nfs_fattr_init(data->res.fattr); | |
2738 | nfs_fattr_init(data->res.dir_fattr); | |
2739 | } | |
2740 | return data; | |
2741 | } | |
2742 | ||
2743 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
2744 | { | |
cccef3b9 AA |
2745 | int status = nfs4_call_sync(NFS_SERVER(dir), &data->msg, |
2746 | &data->arg, &data->res, 1); | |
57dc9a57 TM |
2747 | if (status == 0) { |
2748 | update_changeattr(dir, &data->res.dir_cinfo); | |
2749 | nfs_post_op_update_inode(dir, data->res.dir_fattr); | |
2750 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); | |
2751 | } | |
2752 | return status; | |
2753 | } | |
2754 | ||
2755 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
2756 | { | |
2757 | kfree(data); | |
2758 | } | |
2759 | ||
4f390c15 | 2760 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2761 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 2762 | { |
57dc9a57 TM |
2763 | struct nfs4_createdata *data; |
2764 | int status = -ENAMETOOLONG; | |
1da177e4 | 2765 | |
94a6d753 | 2766 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 2767 | goto out; |
4f390c15 | 2768 | |
57dc9a57 TM |
2769 | status = -ENOMEM; |
2770 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
2771 | if (data == NULL) | |
2772 | goto out; | |
2773 | ||
2774 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
2775 | data->arg.u.symlink.pages = &page; | |
2776 | data->arg.u.symlink.len = len; | |
1da177e4 | 2777 | |
57dc9a57 TM |
2778 | status = nfs4_do_create(dir, dentry, data); |
2779 | ||
2780 | nfs4_free_createdata(data); | |
2781 | out: | |
1da177e4 LT |
2782 | return status; |
2783 | } | |
2784 | ||
4f390c15 | 2785 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2786 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
2787 | { |
2788 | struct nfs4_exception exception = { }; | |
2789 | int err; | |
2790 | do { | |
2791 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
2792 | _nfs4_proc_symlink(dir, dentry, page, |
2793 | len, sattr), | |
1da177e4 LT |
2794 | &exception); |
2795 | } while (exception.retry); | |
2796 | return err; | |
2797 | } | |
2798 | ||
2799 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2800 | struct iattr *sattr) | |
2801 | { | |
57dc9a57 TM |
2802 | struct nfs4_createdata *data; |
2803 | int status = -ENOMEM; | |
1da177e4 | 2804 | |
57dc9a57 TM |
2805 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
2806 | if (data == NULL) | |
2807 | goto out; | |
2808 | ||
2809 | status = nfs4_do_create(dir, dentry, data); | |
2810 | ||
2811 | nfs4_free_createdata(data); | |
2812 | out: | |
1da177e4 LT |
2813 | return status; |
2814 | } | |
2815 | ||
2816 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2817 | struct iattr *sattr) | |
2818 | { | |
2819 | struct nfs4_exception exception = { }; | |
2820 | int err; | |
a8a5da99 AK |
2821 | |
2822 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
2823 | do { |
2824 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2825 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
2826 | &exception); | |
2827 | } while (exception.retry); | |
2828 | return err; | |
2829 | } | |
2830 | ||
2831 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 2832 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
2833 | { |
2834 | struct inode *dir = dentry->d_inode; | |
2835 | struct nfs4_readdir_arg args = { | |
2836 | .fh = NFS_FH(dir), | |
56e4ebf8 | 2837 | .pages = pages, |
1da177e4 LT |
2838 | .pgbase = 0, |
2839 | .count = count, | |
96d25e53 | 2840 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 2841 | .plus = plus, |
1da177e4 LT |
2842 | }; |
2843 | struct nfs4_readdir_res res; | |
2844 | struct rpc_message msg = { | |
2845 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
2846 | .rpc_argp = &args, | |
2847 | .rpc_resp = &res, | |
2848 | .rpc_cred = cred, | |
2849 | }; | |
2850 | int status; | |
2851 | ||
3110ff80 | 2852 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
2853 | dentry->d_parent->d_name.name, |
2854 | dentry->d_name.name, | |
2855 | (unsigned long long)cookie); | |
1da177e4 LT |
2856 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
2857 | res.pgbase = args.pgbase; | |
cccef3b9 | 2858 | status = nfs4_call_sync(NFS_SERVER(dir), &msg, &args, &res, 0); |
ac396128 | 2859 | if (status >= 0) { |
1da177e4 | 2860 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
2861 | status += args.pgbase; |
2862 | } | |
c4812998 TM |
2863 | |
2864 | nfs_invalidate_atime(dir); | |
2865 | ||
3110ff80 | 2866 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
2867 | return status; |
2868 | } | |
2869 | ||
2870 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 2871 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
2872 | { |
2873 | struct nfs4_exception exception = { }; | |
2874 | int err; | |
2875 | do { | |
2876 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
2877 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 2878 | pages, count, plus), |
1da177e4 LT |
2879 | &exception); |
2880 | } while (exception.retry); | |
2881 | return err; | |
2882 | } | |
2883 | ||
2884 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2885 | struct iattr *sattr, dev_t rdev) | |
2886 | { | |
57dc9a57 TM |
2887 | struct nfs4_createdata *data; |
2888 | int mode = sattr->ia_mode; | |
2889 | int status = -ENOMEM; | |
1da177e4 LT |
2890 | |
2891 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
2892 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
57dc9a57 TM |
2893 | |
2894 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); | |
2895 | if (data == NULL) | |
2896 | goto out; | |
2897 | ||
1da177e4 | 2898 | if (S_ISFIFO(mode)) |
57dc9a57 | 2899 | data->arg.ftype = NF4FIFO; |
1da177e4 | 2900 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
2901 | data->arg.ftype = NF4BLK; |
2902 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
2903 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
2904 | } |
2905 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
2906 | data->arg.ftype = NF4CHR; |
2907 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
2908 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 | 2909 | } |
1da177e4 | 2910 | |
57dc9a57 TM |
2911 | status = nfs4_do_create(dir, dentry, data); |
2912 | ||
2913 | nfs4_free_createdata(data); | |
2914 | out: | |
1da177e4 LT |
2915 | return status; |
2916 | } | |
2917 | ||
2918 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2919 | struct iattr *sattr, dev_t rdev) | |
2920 | { | |
2921 | struct nfs4_exception exception = { }; | |
2922 | int err; | |
a8a5da99 AK |
2923 | |
2924 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
2925 | do { |
2926 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2927 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
2928 | &exception); | |
2929 | } while (exception.retry); | |
2930 | return err; | |
2931 | } | |
2932 | ||
2933 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
2934 | struct nfs_fsstat *fsstat) | |
2935 | { | |
2936 | struct nfs4_statfs_arg args = { | |
2937 | .fh = fhandle, | |
2938 | .bitmask = server->attr_bitmask, | |
2939 | }; | |
24ad148a BH |
2940 | struct nfs4_statfs_res res = { |
2941 | .fsstat = fsstat, | |
2942 | }; | |
1da177e4 LT |
2943 | struct rpc_message msg = { |
2944 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
2945 | .rpc_argp = &args, | |
24ad148a | 2946 | .rpc_resp = &res, |
1da177e4 LT |
2947 | }; |
2948 | ||
0e574af1 | 2949 | nfs_fattr_init(fsstat->fattr); |
cccef3b9 | 2950 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2951 | } |
2952 | ||
2953 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
2954 | { | |
2955 | struct nfs4_exception exception = { }; | |
2956 | int err; | |
2957 | do { | |
2958 | err = nfs4_handle_exception(server, | |
2959 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
2960 | &exception); | |
2961 | } while (exception.retry); | |
2962 | return err; | |
2963 | } | |
2964 | ||
2965 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
2966 | struct nfs_fsinfo *fsinfo) | |
2967 | { | |
2968 | struct nfs4_fsinfo_arg args = { | |
2969 | .fh = fhandle, | |
2970 | .bitmask = server->attr_bitmask, | |
2971 | }; | |
3dda5e43 BH |
2972 | struct nfs4_fsinfo_res res = { |
2973 | .fsinfo = fsinfo, | |
2974 | }; | |
1da177e4 LT |
2975 | struct rpc_message msg = { |
2976 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
2977 | .rpc_argp = &args, | |
3dda5e43 | 2978 | .rpc_resp = &res, |
1da177e4 LT |
2979 | }; |
2980 | ||
cccef3b9 | 2981 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2982 | } |
2983 | ||
2984 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
2985 | { | |
2986 | struct nfs4_exception exception = { }; | |
2987 | int err; | |
2988 | ||
2989 | do { | |
2990 | err = nfs4_handle_exception(server, | |
2991 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
2992 | &exception); | |
2993 | } while (exception.retry); | |
2994 | return err; | |
2995 | } | |
2996 | ||
2997 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
2998 | { | |
0e574af1 | 2999 | nfs_fattr_init(fsinfo->fattr); |
1da177e4 LT |
3000 | return nfs4_do_fsinfo(server, fhandle, fsinfo); |
3001 | } | |
3002 | ||
3003 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3004 | struct nfs_pathconf *pathconf) | |
3005 | { | |
3006 | struct nfs4_pathconf_arg args = { | |
3007 | .fh = fhandle, | |
3008 | .bitmask = server->attr_bitmask, | |
3009 | }; | |
d45b2989 BH |
3010 | struct nfs4_pathconf_res res = { |
3011 | .pathconf = pathconf, | |
3012 | }; | |
1da177e4 LT |
3013 | struct rpc_message msg = { |
3014 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3015 | .rpc_argp = &args, | |
d45b2989 | 3016 | .rpc_resp = &res, |
1da177e4 LT |
3017 | }; |
3018 | ||
3019 | /* None of the pathconf attributes are mandatory to implement */ | |
3020 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3021 | memset(pathconf, 0, sizeof(*pathconf)); | |
3022 | return 0; | |
3023 | } | |
3024 | ||
0e574af1 | 3025 | nfs_fattr_init(pathconf->fattr); |
cccef3b9 | 3026 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
3027 | } |
3028 | ||
3029 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3030 | struct nfs_pathconf *pathconf) | |
3031 | { | |
3032 | struct nfs4_exception exception = { }; | |
3033 | int err; | |
3034 | ||
3035 | do { | |
3036 | err = nfs4_handle_exception(server, | |
3037 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3038 | &exception); | |
3039 | } while (exception.retry); | |
3040 | return err; | |
3041 | } | |
3042 | ||
ec06c096 | 3043 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3044 | { |
ec06c096 | 3045 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 3046 | |
f11c88af AA |
3047 | dprintk("--> %s\n", __func__); |
3048 | ||
14516c3a TM |
3049 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
3050 | return -EAGAIN; | |
f11c88af | 3051 | |
9e33bed5 | 3052 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
0110ee15 | 3053 | nfs_restart_rpc(task, server->nfs_client); |
ec06c096 | 3054 | return -EAGAIN; |
1da177e4 | 3055 | } |
8850df99 TM |
3056 | |
3057 | nfs_invalidate_atime(data->inode); | |
1da177e4 | 3058 | if (task->tk_status > 0) |
ec06c096 TM |
3059 | renew_lease(server, data->timestamp); |
3060 | return 0; | |
1da177e4 LT |
3061 | } |
3062 | ||
bdc7f021 | 3063 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3064 | { |
1da177e4 | 3065 | data->timestamp = jiffies; |
bdc7f021 | 3066 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
1da177e4 LT |
3067 | } |
3068 | ||
788e7a89 | 3069 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3070 | { |
1da177e4 LT |
3071 | struct inode *inode = data->inode; |
3072 | ||
14516c3a TM |
3073 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
3074 | return -EAGAIN; | |
def6ed7e | 3075 | |
9e33bed5 | 3076 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
0110ee15 | 3077 | nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client); |
788e7a89 | 3078 | return -EAGAIN; |
1da177e4 | 3079 | } |
4f9838c7 | 3080 | if (task->tk_status >= 0) { |
1da177e4 | 3081 | renew_lease(NFS_SERVER(inode), data->timestamp); |
70ca8852 | 3082 | nfs_post_op_update_inode_force_wcc(inode, data->res.fattr); |
4f9838c7 | 3083 | } |
788e7a89 | 3084 | return 0; |
1da177e4 LT |
3085 | } |
3086 | ||
bdc7f021 | 3087 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3088 | { |
bdc7f021 TM |
3089 | struct nfs_server *server = NFS_SERVER(data->inode); |
3090 | ||
a65318bf | 3091 | data->args.bitmask = server->cache_consistency_bitmask; |
4f9838c7 | 3092 | data->res.server = server; |
1da177e4 LT |
3093 | data->timestamp = jiffies; |
3094 | ||
bdc7f021 | 3095 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
1da177e4 LT |
3096 | } |
3097 | ||
788e7a89 | 3098 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3099 | { |
1da177e4 LT |
3100 | struct inode *inode = data->inode; |
3101 | ||
14516c3a TM |
3102 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
3103 | return -EAGAIN; | |
3104 | ||
9e33bed5 | 3105 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
0110ee15 | 3106 | nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client); |
788e7a89 | 3107 | return -EAGAIN; |
1da177e4 | 3108 | } |
9e08a3c5 | 3109 | nfs_refresh_inode(inode, data->res.fattr); |
788e7a89 | 3110 | return 0; |
1da177e4 LT |
3111 | } |
3112 | ||
bdc7f021 | 3113 | static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3114 | { |
788e7a89 | 3115 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 3116 | |
a65318bf | 3117 | data->args.bitmask = server->cache_consistency_bitmask; |
4f9838c7 | 3118 | data->res.server = server; |
bdc7f021 | 3119 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
1da177e4 LT |
3120 | } |
3121 | ||
9bc4e3ca CL |
3122 | struct nfs4_renewdata { |
3123 | struct nfs_client *client; | |
3124 | unsigned long timestamp; | |
3125 | }; | |
3126 | ||
1da177e4 LT |
3127 | /* |
3128 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3129 | * standalone procedure for queueing an asynchronous RENEW. | |
3130 | */ | |
9bc4e3ca | 3131 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3132 | { |
9bc4e3ca CL |
3133 | struct nfs4_renewdata *data = calldata; |
3134 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3135 | |
0851de06 AB |
3136 | if (atomic_read(&clp->cl_count) > 1) |
3137 | nfs4_schedule_state_renewal(clp); | |
3138 | nfs_put_client(clp); | |
9bc4e3ca | 3139 | kfree(data); |
dc96aef9 AB |
3140 | } |
3141 | ||
9bc4e3ca | 3142 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3143 | { |
9bc4e3ca CL |
3144 | struct nfs4_renewdata *data = calldata; |
3145 | struct nfs_client *clp = data->client; | |
3146 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3147 | |
3148 | if (task->tk_status < 0) { | |
95baa25c TM |
3149 | /* Unless we're shutting down, schedule state recovery! */ |
3150 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) != 0) | |
3151 | nfs4_schedule_state_recovery(clp); | |
1da177e4 LT |
3152 | return; |
3153 | } | |
452e9352 | 3154 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3155 | } |
3156 | ||
963d8fe5 TM |
3157 | static const struct rpc_call_ops nfs4_renew_ops = { |
3158 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3159 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3160 | }; |
3161 | ||
adfa6f98 | 3162 | int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3163 | { |
3164 | struct rpc_message msg = { | |
3165 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3166 | .rpc_argp = clp, | |
b4454fe1 | 3167 | .rpc_cred = cred, |
1da177e4 | 3168 | }; |
9bc4e3ca | 3169 | struct nfs4_renewdata *data; |
1da177e4 | 3170 | |
0851de06 AB |
3171 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3172 | return -EIO; | |
9bc4e3ca CL |
3173 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
3174 | if (data == NULL) | |
3175 | return -ENOMEM; | |
3176 | data->client = clp; | |
3177 | data->timestamp = jiffies; | |
1da177e4 | 3178 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3179 | &nfs4_renew_ops, data); |
1da177e4 LT |
3180 | } |
3181 | ||
adfa6f98 | 3182 | int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3183 | { |
3184 | struct rpc_message msg = { | |
3185 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3186 | .rpc_argp = clp, | |
b4454fe1 | 3187 | .rpc_cred = cred, |
1da177e4 LT |
3188 | }; |
3189 | unsigned long now = jiffies; | |
3190 | int status; | |
3191 | ||
3192 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3193 | if (status < 0) | |
3194 | return status; | |
452e9352 | 3195 | do_renew_lease(clp, now); |
1da177e4 LT |
3196 | return 0; |
3197 | } | |
3198 | ||
aa1870af BF |
3199 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3200 | { | |
3201 | return (server->caps & NFS_CAP_ACLS) | |
3202 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3203 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3204 | } | |
3205 | ||
3206 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
3207 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
3208 | * the stack. | |
3209 | */ | |
3210 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
3211 | ||
3212 | static void buf_to_pages(const void *buf, size_t buflen, | |
3213 | struct page **pages, unsigned int *pgbase) | |
3214 | { | |
3215 | const void *p = buf; | |
3216 | ||
3217 | *pgbase = offset_in_page(buf); | |
3218 | p -= *pgbase; | |
3219 | while (p < buf + buflen) { | |
3220 | *(pages++) = virt_to_page(p); | |
3221 | p += PAGE_CACHE_SIZE; | |
3222 | } | |
3223 | } | |
3224 | ||
e50a1c2e BF |
3225 | struct nfs4_cached_acl { |
3226 | int cached; | |
3227 | size_t len; | |
3e9d4154 | 3228 | char data[0]; |
e50a1c2e BF |
3229 | }; |
3230 | ||
3231 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3232 | { | |
3233 | struct nfs_inode *nfsi = NFS_I(inode); | |
3234 | ||
3235 | spin_lock(&inode->i_lock); | |
3236 | kfree(nfsi->nfs4_acl); | |
3237 | nfsi->nfs4_acl = acl; | |
3238 | spin_unlock(&inode->i_lock); | |
3239 | } | |
3240 | ||
3241 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3242 | { | |
3243 | nfs4_set_cached_acl(inode, NULL); | |
3244 | } | |
3245 | ||
3246 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3247 | { | |
3248 | struct nfs_inode *nfsi = NFS_I(inode); | |
3249 | struct nfs4_cached_acl *acl; | |
3250 | int ret = -ENOENT; | |
3251 | ||
3252 | spin_lock(&inode->i_lock); | |
3253 | acl = nfsi->nfs4_acl; | |
3254 | if (acl == NULL) | |
3255 | goto out; | |
3256 | if (buf == NULL) /* user is just asking for length */ | |
3257 | goto out_len; | |
3258 | if (acl->cached == 0) | |
3259 | goto out; | |
3260 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3261 | if (acl->len > buflen) | |
3262 | goto out; | |
3263 | memcpy(buf, acl->data, acl->len); | |
3264 | out_len: | |
3265 | ret = acl->len; | |
3266 | out: | |
3267 | spin_unlock(&inode->i_lock); | |
3268 | return ret; | |
3269 | } | |
3270 | ||
3271 | static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len) | |
3272 | { | |
3273 | struct nfs4_cached_acl *acl; | |
3274 | ||
3275 | if (buf && acl_len <= PAGE_SIZE) { | |
3276 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); | |
3277 | if (acl == NULL) | |
3278 | goto out; | |
3279 | acl->cached = 1; | |
3280 | memcpy(acl->data, buf, acl_len); | |
3281 | } else { | |
3282 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3283 | if (acl == NULL) | |
3284 | goto out; | |
3285 | acl->cached = 0; | |
3286 | } | |
3287 | acl->len = acl_len; | |
3288 | out: | |
3289 | nfs4_set_cached_acl(inode, acl); | |
3290 | } | |
3291 | ||
16b4289c | 3292 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3293 | { |
aa1870af BF |
3294 | struct page *pages[NFS4ACL_MAXPAGES]; |
3295 | struct nfs_getaclargs args = { | |
3296 | .fh = NFS_FH(inode), | |
3297 | .acl_pages = pages, | |
3298 | .acl_len = buflen, | |
3299 | }; | |
663c79b3 BH |
3300 | struct nfs_getaclres res = { |
3301 | .acl_len = buflen, | |
3302 | }; | |
e50a1c2e | 3303 | void *resp_buf; |
aa1870af BF |
3304 | struct rpc_message msg = { |
3305 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3306 | .rpc_argp = &args, | |
663c79b3 | 3307 | .rpc_resp = &res, |
aa1870af | 3308 | }; |
e50a1c2e | 3309 | struct page *localpage = NULL; |
aa1870af BF |
3310 | int ret; |
3311 | ||
e50a1c2e BF |
3312 | if (buflen < PAGE_SIZE) { |
3313 | /* As long as we're doing a round trip to the server anyway, | |
3314 | * let's be prepared for a page of acl data. */ | |
3315 | localpage = alloc_page(GFP_KERNEL); | |
3316 | resp_buf = page_address(localpage); | |
3317 | if (localpage == NULL) | |
3318 | return -ENOMEM; | |
3319 | args.acl_pages[0] = localpage; | |
3320 | args.acl_pgbase = 0; | |
663c79b3 | 3321 | args.acl_len = PAGE_SIZE; |
e50a1c2e BF |
3322 | } else { |
3323 | resp_buf = buf; | |
3324 | buf_to_pages(buf, buflen, args.acl_pages, &args.acl_pgbase); | |
3325 | } | |
cccef3b9 | 3326 | ret = nfs4_call_sync(NFS_SERVER(inode), &msg, &args, &res, 0); |
e50a1c2e BF |
3327 | if (ret) |
3328 | goto out_free; | |
663c79b3 BH |
3329 | if (res.acl_len > args.acl_len) |
3330 | nfs4_write_cached_acl(inode, NULL, res.acl_len); | |
e50a1c2e | 3331 | else |
663c79b3 | 3332 | nfs4_write_cached_acl(inode, resp_buf, res.acl_len); |
e50a1c2e BF |
3333 | if (buf) { |
3334 | ret = -ERANGE; | |
663c79b3 | 3335 | if (res.acl_len > buflen) |
e50a1c2e BF |
3336 | goto out_free; |
3337 | if (localpage) | |
663c79b3 | 3338 | memcpy(buf, resp_buf, res.acl_len); |
e50a1c2e | 3339 | } |
663c79b3 | 3340 | ret = res.acl_len; |
e50a1c2e BF |
3341 | out_free: |
3342 | if (localpage) | |
3343 | __free_page(localpage); | |
aa1870af BF |
3344 | return ret; |
3345 | } | |
3346 | ||
16b4289c TM |
3347 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3348 | { | |
3349 | struct nfs4_exception exception = { }; | |
3350 | ssize_t ret; | |
3351 | do { | |
3352 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3353 | if (ret >= 0) | |
3354 | break; | |
3355 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3356 | } while (exception.retry); | |
3357 | return ret; | |
3358 | } | |
3359 | ||
e50a1c2e BF |
3360 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3361 | { | |
3362 | struct nfs_server *server = NFS_SERVER(inode); | |
3363 | int ret; | |
3364 | ||
3365 | if (!nfs4_server_supports_acls(server)) | |
3366 | return -EOPNOTSUPP; | |
3367 | ret = nfs_revalidate_inode(server, inode); | |
3368 | if (ret < 0) | |
3369 | return ret; | |
08a22b39 AK |
3370 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
3371 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
3372 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
3373 | if (ret != -ENOENT) | |
3374 | return ret; | |
3375 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3376 | } | |
3377 | ||
16b4289c | 3378 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3379 | { |
3380 | struct nfs_server *server = NFS_SERVER(inode); | |
3381 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3382 | struct nfs_setaclargs arg = { | |
3383 | .fh = NFS_FH(inode), | |
3384 | .acl_pages = pages, | |
3385 | .acl_len = buflen, | |
3386 | }; | |
73c403a9 | 3387 | struct nfs_setaclres res; |
4b580ee3 BF |
3388 | struct rpc_message msg = { |
3389 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3390 | .rpc_argp = &arg, | |
73c403a9 | 3391 | .rpc_resp = &res, |
4b580ee3 BF |
3392 | }; |
3393 | int ret; | |
3394 | ||
3395 | if (!nfs4_server_supports_acls(server)) | |
3396 | return -EOPNOTSUPP; | |
642ac549 | 3397 | nfs_inode_return_delegation(inode); |
4b580ee3 | 3398 | buf_to_pages(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
cccef3b9 | 3399 | ret = nfs4_call_sync(server, &msg, &arg, &res, 1); |
08a22b39 AK |
3400 | /* |
3401 | * Acl update can result in inode attribute update. | |
3402 | * so mark the attribute cache invalid. | |
3403 | */ | |
3404 | spin_lock(&inode->i_lock); | |
3405 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
3406 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
3407 | nfs_access_zap_cache(inode); |
3408 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3409 | return ret; |
3410 | } | |
3411 | ||
16b4289c TM |
3412 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3413 | { | |
3414 | struct nfs4_exception exception = { }; | |
3415 | int err; | |
3416 | do { | |
3417 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3418 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3419 | &exception); | |
3420 | } while (exception.retry); | |
3421 | return err; | |
3422 | } | |
3423 | ||
1da177e4 | 3424 | static int |
aa5190d0 | 3425 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 3426 | { |
aa5190d0 TM |
3427 | struct nfs_client *clp = server->nfs_client; |
3428 | ||
3429 | if (task->tk_status >= 0) | |
1da177e4 LT |
3430 | return 0; |
3431 | switch(task->tk_status) { | |
9e33bed5 TM |
3432 | case -NFS4ERR_ADMIN_REVOKED: |
3433 | case -NFS4ERR_BAD_STATEID: | |
3434 | case -NFS4ERR_OPENMODE: | |
3435 | if (state == NULL) | |
3436 | break; | |
3437 | nfs4_state_mark_reclaim_nograce(clp, state); | |
a2c0b9e2 | 3438 | goto do_state_recovery; |
1da177e4 | 3439 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 3440 | case -NFS4ERR_STALE_CLIENTID: |
1da177e4 | 3441 | case -NFS4ERR_EXPIRED: |
a2c0b9e2 | 3442 | goto do_state_recovery; |
4745e315 AA |
3443 | #if defined(CONFIG_NFS_V4_1) |
3444 | case -NFS4ERR_BADSESSION: | |
3445 | case -NFS4ERR_BADSLOT: | |
3446 | case -NFS4ERR_BAD_HIGH_SLOT: | |
3447 | case -NFS4ERR_DEADSESSION: | |
3448 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
3449 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
3450 | case -NFS4ERR_SEQ_MISORDERED: | |
3451 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
3452 | task->tk_status); | |
0b9e2d41 | 3453 | nfs4_schedule_state_recovery(clp); |
4745e315 AA |
3454 | task->tk_status = 0; |
3455 | return -EAGAIN; | |
3456 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 3457 | case -NFS4ERR_DELAY: |
aa5190d0 | 3458 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 3459 | case -NFS4ERR_GRACE: |
2c643488 | 3460 | case -EKEYEXPIRED: |
1da177e4 LT |
3461 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
3462 | task->tk_status = 0; | |
3463 | return -EAGAIN; | |
3464 | case -NFS4ERR_OLD_STATEID: | |
3465 | task->tk_status = 0; | |
3466 | return -EAGAIN; | |
3467 | } | |
3468 | task->tk_status = nfs4_map_errors(task->tk_status); | |
3469 | return 0; | |
a2c0b9e2 TM |
3470 | do_state_recovery: |
3471 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); | |
3472 | nfs4_schedule_state_recovery(clp); | |
3473 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) | |
3474 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
3475 | task->tk_status = 0; | |
3476 | return -EAGAIN; | |
1da177e4 LT |
3477 | } |
3478 | ||
bb8b27e5 TM |
3479 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
3480 | unsigned short port, struct rpc_cred *cred, | |
3481 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
3482 | { |
3483 | nfs4_verifier sc_verifier; | |
3484 | struct nfs4_setclientid setclientid = { | |
3485 | .sc_verifier = &sc_verifier, | |
3486 | .sc_prog = program, | |
f4eecd5d | 3487 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
3488 | }; |
3489 | struct rpc_message msg = { | |
3490 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
3491 | .rpc_argp = &setclientid, | |
bb8b27e5 | 3492 | .rpc_resp = res, |
286d7d6a | 3493 | .rpc_cred = cred, |
1da177e4 | 3494 | }; |
bc4785cd | 3495 | __be32 *p; |
1da177e4 LT |
3496 | int loop = 0; |
3497 | int status; | |
3498 | ||
bc4785cd | 3499 | p = (__be32*)sc_verifier.data; |
1da177e4 LT |
3500 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); |
3501 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
3502 | ||
3503 | for(;;) { | |
3504 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, | |
69dd716c | 3505 | sizeof(setclientid.sc_name), "%s/%s %s %s %u", |
d4d3c507 CL |
3506 | clp->cl_ipaddr, |
3507 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3508 | RPC_DISPLAY_ADDR), | |
69dd716c TM |
3509 | rpc_peeraddr2str(clp->cl_rpcclient, |
3510 | RPC_DISPLAY_PROTO), | |
78ea323b | 3511 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
1da177e4 LT |
3512 | clp->cl_id_uniquifier); |
3513 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
d4d3c507 CL |
3514 | sizeof(setclientid.sc_netid), |
3515 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3516 | RPC_DISPLAY_NETID)); | |
1da177e4 | 3517 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 3518 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
3519 | clp->cl_ipaddr, port >> 8, port & 255); |
3520 | ||
3521 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3522 | if (status != -NFS4ERR_CLID_INUSE) | |
3523 | break; | |
3524 | if (signalled()) | |
3525 | break; | |
3526 | if (loop++ & 1) | |
611c96c8 | 3527 | ssleep(clp->cl_lease_time / HZ + 1); |
1da177e4 LT |
3528 | else |
3529 | if (++clp->cl_id_uniquifier == 0) | |
3530 | break; | |
3531 | } | |
3532 | return status; | |
3533 | } | |
3534 | ||
bb8b27e5 TM |
3535 | static int _nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
3536 | struct nfs4_setclientid_res *arg, | |
3537 | struct rpc_cred *cred) | |
1da177e4 LT |
3538 | { |
3539 | struct nfs_fsinfo fsinfo; | |
3540 | struct rpc_message msg = { | |
3541 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 3542 | .rpc_argp = arg, |
1da177e4 | 3543 | .rpc_resp = &fsinfo, |
286d7d6a | 3544 | .rpc_cred = cred, |
1da177e4 LT |
3545 | }; |
3546 | unsigned long now; | |
3547 | int status; | |
3548 | ||
3549 | now = jiffies; | |
3550 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3551 | if (status == 0) { | |
3552 | spin_lock(&clp->cl_lock); | |
3553 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
3554 | clp->cl_last_renewal = now; | |
3555 | spin_unlock(&clp->cl_lock); | |
3556 | } | |
3557 | return status; | |
3558 | } | |
3559 | ||
bb8b27e5 TM |
3560 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
3561 | struct nfs4_setclientid_res *arg, | |
3562 | struct rpc_cred *cred) | |
51581f3b | 3563 | { |
77e03677 | 3564 | long timeout = 0; |
51581f3b TM |
3565 | int err; |
3566 | do { | |
bb8b27e5 | 3567 | err = _nfs4_proc_setclientid_confirm(clp, arg, cred); |
51581f3b TM |
3568 | switch (err) { |
3569 | case 0: | |
3570 | return err; | |
3571 | case -NFS4ERR_RESOURCE: | |
3572 | /* The IBM lawyers misread another document! */ | |
3573 | case -NFS4ERR_DELAY: | |
3574 | err = nfs4_delay(clp->cl_rpcclient, &timeout); | |
3575 | } | |
3576 | } while (err == 0); | |
3577 | return err; | |
3578 | } | |
3579 | ||
fe650407 TM |
3580 | struct nfs4_delegreturndata { |
3581 | struct nfs4_delegreturnargs args; | |
fa178f29 | 3582 | struct nfs4_delegreturnres res; |
fe650407 TM |
3583 | struct nfs_fh fh; |
3584 | nfs4_stateid stateid; | |
26e976a8 | 3585 | unsigned long timestamp; |
fa178f29 | 3586 | struct nfs_fattr fattr; |
fe650407 TM |
3587 | int rpc_status; |
3588 | }; | |
3589 | ||
fe650407 TM |
3590 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
3591 | { | |
3592 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 3593 | |
14516c3a TM |
3594 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
3595 | return; | |
938e1010 | 3596 | |
79708861 RL |
3597 | switch (task->tk_status) { |
3598 | case -NFS4ERR_STALE_STATEID: | |
3599 | case -NFS4ERR_EXPIRED: | |
3600 | case 0: | |
fa178f29 | 3601 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
3602 | break; |
3603 | default: | |
3604 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
3605 | -EAGAIN) { | |
3606 | nfs_restart_rpc(task, data->res.server->nfs_client); | |
3607 | return; | |
3608 | } | |
3609 | } | |
3610 | data->rpc_status = task->tk_status; | |
fe650407 TM |
3611 | } |
3612 | ||
3613 | static void nfs4_delegreturn_release(void *calldata) | |
3614 | { | |
fe650407 TM |
3615 | kfree(calldata); |
3616 | } | |
3617 | ||
938e1010 AA |
3618 | #if defined(CONFIG_NFS_V4_1) |
3619 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
3620 | { | |
3621 | struct nfs4_delegreturndata *d_data; | |
3622 | ||
3623 | d_data = (struct nfs4_delegreturndata *)data; | |
3624 | ||
035168ab | 3625 | if (nfs4_setup_sequence(d_data->res.server, |
938e1010 AA |
3626 | &d_data->args.seq_args, |
3627 | &d_data->res.seq_res, 1, task)) | |
3628 | return; | |
3629 | rpc_call_start(task); | |
3630 | } | |
3631 | #endif /* CONFIG_NFS_V4_1 */ | |
3632 | ||
c8d149f3 | 3633 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
3634 | #if defined(CONFIG_NFS_V4_1) |
3635 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
3636 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
3637 | .rpc_call_done = nfs4_delegreturn_done, |
3638 | .rpc_release = nfs4_delegreturn_release, | |
3639 | }; | |
3640 | ||
e6f81075 | 3641 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
3642 | { |
3643 | struct nfs4_delegreturndata *data; | |
fa178f29 | 3644 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 3645 | struct rpc_task *task; |
5138fde0 TM |
3646 | struct rpc_message msg = { |
3647 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
3648 | .rpc_cred = cred, | |
3649 | }; | |
c970aa85 TM |
3650 | struct rpc_task_setup task_setup_data = { |
3651 | .rpc_client = server->client, | |
5138fde0 | 3652 | .rpc_message = &msg, |
c970aa85 TM |
3653 | .callback_ops = &nfs4_delegreturn_ops, |
3654 | .flags = RPC_TASK_ASYNC, | |
3655 | }; | |
e6f81075 | 3656 | int status = 0; |
fe650407 | 3657 | |
8535b2be | 3658 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
3659 | if (data == NULL) |
3660 | return -ENOMEM; | |
3661 | data->args.fhandle = &data->fh; | |
3662 | data->args.stateid = &data->stateid; | |
fa178f29 | 3663 | data->args.bitmask = server->attr_bitmask; |
fe650407 TM |
3664 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
3665 | memcpy(&data->stateid, stateid, sizeof(data->stateid)); | |
fa178f29 TM |
3666 | data->res.fattr = &data->fattr; |
3667 | data->res.server = server; | |
5138fde0 | 3668 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 3669 | data->timestamp = jiffies; |
fe650407 TM |
3670 | data->rpc_status = 0; |
3671 | ||
c970aa85 | 3672 | task_setup_data.callback_data = data; |
1174dd1f TM |
3673 | msg.rpc_argp = &data->args; |
3674 | msg.rpc_resp = &data->res; | |
c970aa85 | 3675 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 3676 | if (IS_ERR(task)) |
fe650407 | 3677 | return PTR_ERR(task); |
e6f81075 TM |
3678 | if (!issync) |
3679 | goto out; | |
fe650407 | 3680 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
3681 | if (status != 0) |
3682 | goto out; | |
3683 | status = data->rpc_status; | |
3684 | if (status != 0) | |
3685 | goto out; | |
3686 | nfs_refresh_inode(inode, &data->fattr); | |
3687 | out: | |
e6b3c4db | 3688 | rpc_put_task(task); |
fe650407 | 3689 | return status; |
1da177e4 LT |
3690 | } |
3691 | ||
e6f81075 | 3692 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
3693 | { |
3694 | struct nfs_server *server = NFS_SERVER(inode); | |
3695 | struct nfs4_exception exception = { }; | |
3696 | int err; | |
3697 | do { | |
e6f81075 | 3698 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
3699 | switch (err) { |
3700 | case -NFS4ERR_STALE_STATEID: | |
3701 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
3702 | case 0: |
3703 | return 0; | |
3704 | } | |
3705 | err = nfs4_handle_exception(server, err, &exception); | |
3706 | } while (exception.retry); | |
3707 | return err; | |
3708 | } | |
3709 | ||
3710 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
3711 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
3712 | ||
3713 | /* | |
3714 | * sleep, with exponential backoff, and retry the LOCK operation. | |
3715 | */ | |
3716 | static unsigned long | |
3717 | nfs4_set_lock_task_retry(unsigned long timeout) | |
3718 | { | |
150030b7 | 3719 | schedule_timeout_killable(timeout); |
1da177e4 LT |
3720 | timeout <<= 1; |
3721 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
3722 | return NFS4_LOCK_MAXTIMEOUT; | |
3723 | return timeout; | |
3724 | } | |
3725 | ||
1da177e4 LT |
3726 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
3727 | { | |
3728 | struct inode *inode = state->inode; | |
3729 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 3730 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 3731 | struct nfs_lockt_args arg = { |
1da177e4 | 3732 | .fh = NFS_FH(inode), |
911d1aaf | 3733 | .fl = request, |
1da177e4 | 3734 | }; |
911d1aaf TM |
3735 | struct nfs_lockt_res res = { |
3736 | .denied = request, | |
1da177e4 LT |
3737 | }; |
3738 | struct rpc_message msg = { | |
3739 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
3740 | .rpc_argp = &arg, | |
3741 | .rpc_resp = &res, | |
3742 | .rpc_cred = state->owner->so_cred, | |
3743 | }; | |
1da177e4 LT |
3744 | struct nfs4_lock_state *lsp; |
3745 | int status; | |
3746 | ||
911d1aaf | 3747 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
3748 | status = nfs4_set_lock_state(state, request); |
3749 | if (status != 0) | |
3750 | goto out; | |
3751 | lsp = request->fl_u.nfs4_fl.owner; | |
9f958ab8 | 3752 | arg.lock_owner.id = lsp->ls_id.id; |
cccef3b9 | 3753 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
911d1aaf TM |
3754 | switch (status) { |
3755 | case 0: | |
3756 | request->fl_type = F_UNLCK; | |
3757 | break; | |
3758 | case -NFS4ERR_DENIED: | |
3759 | status = 0; | |
1da177e4 | 3760 | } |
70cc6487 | 3761 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 3762 | out: |
1da177e4 LT |
3763 | return status; |
3764 | } | |
3765 | ||
3766 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3767 | { | |
3768 | struct nfs4_exception exception = { }; | |
3769 | int err; | |
3770 | ||
3771 | do { | |
3772 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
3773 | _nfs4_proc_getlk(state, cmd, request), | |
3774 | &exception); | |
3775 | } while (exception.retry); | |
3776 | return err; | |
3777 | } | |
3778 | ||
3779 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
3780 | { | |
3781 | int res = 0; | |
3782 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
3783 | case FL_POSIX: | |
3784 | res = posix_lock_file_wait(file, fl); | |
3785 | break; | |
3786 | case FL_FLOCK: | |
3787 | res = flock_lock_file_wait(file, fl); | |
3788 | break; | |
3789 | default: | |
3790 | BUG(); | |
3791 | } | |
1da177e4 LT |
3792 | return res; |
3793 | } | |
3794 | ||
faf5f49c | 3795 | struct nfs4_unlockdata { |
911d1aaf TM |
3796 | struct nfs_locku_args arg; |
3797 | struct nfs_locku_res res; | |
faf5f49c TM |
3798 | struct nfs4_lock_state *lsp; |
3799 | struct nfs_open_context *ctx; | |
911d1aaf TM |
3800 | struct file_lock fl; |
3801 | const struct nfs_server *server; | |
26e976a8 | 3802 | unsigned long timestamp; |
faf5f49c TM |
3803 | }; |
3804 | ||
911d1aaf TM |
3805 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
3806 | struct nfs_open_context *ctx, | |
3807 | struct nfs4_lock_state *lsp, | |
3808 | struct nfs_seqid *seqid) | |
3809 | { | |
3810 | struct nfs4_unlockdata *p; | |
3811 | struct inode *inode = lsp->ls_state->inode; | |
3812 | ||
8535b2be | 3813 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
3814 | if (p == NULL) |
3815 | return NULL; | |
3816 | p->arg.fh = NFS_FH(inode); | |
3817 | p->arg.fl = &p->fl; | |
3818 | p->arg.seqid = seqid; | |
c1d51931 | 3819 | p->res.seqid = seqid; |
911d1aaf TM |
3820 | p->arg.stateid = &lsp->ls_stateid; |
3821 | p->lsp = lsp; | |
3822 | atomic_inc(&lsp->ls_count); | |
3823 | /* Ensure we don't close file until we're done freeing locks! */ | |
3824 | p->ctx = get_nfs_open_context(ctx); | |
3825 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
3826 | p->server = NFS_SERVER(inode); | |
3827 | return p; | |
3828 | } | |
3829 | ||
06f814a3 | 3830 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 3831 | { |
963d8fe5 | 3832 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 3833 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
3834 | nfs4_put_lock_state(calldata->lsp); |
3835 | put_nfs_open_context(calldata->ctx); | |
3836 | kfree(calldata); | |
faf5f49c TM |
3837 | } |
3838 | ||
963d8fe5 | 3839 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 3840 | { |
963d8fe5 | 3841 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 3842 | |
14516c3a TM |
3843 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
3844 | return; | |
faf5f49c TM |
3845 | switch (task->tk_status) { |
3846 | case 0: | |
3847 | memcpy(calldata->lsp->ls_stateid.data, | |
911d1aaf | 3848 | calldata->res.stateid.data, |
faf5f49c | 3849 | sizeof(calldata->lsp->ls_stateid.data)); |
26e976a8 | 3850 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 3851 | break; |
9e33bed5 TM |
3852 | case -NFS4ERR_BAD_STATEID: |
3853 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
3854 | case -NFS4ERR_STALE_STATEID: |
3855 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
3856 | break; |
3857 | default: | |
9e33bed5 | 3858 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
0110ee15 | 3859 | nfs_restart_rpc(task, |
d61e612a | 3860 | calldata->server->nfs_client); |
faf5f49c | 3861 | } |
faf5f49c TM |
3862 | } |
3863 | ||
4ce70ada | 3864 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 3865 | { |
4ce70ada | 3866 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 3867 | |
911d1aaf | 3868 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
3869 | return; |
3870 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
3871 | /* Note: exit _without_ running nfs4_locku_done */ |
3872 | task->tk_action = NULL; | |
faf5f49c TM |
3873 | return; |
3874 | } | |
26e976a8 | 3875 | calldata->timestamp = jiffies; |
035168ab | 3876 | if (nfs4_setup_sequence(calldata->server, |
a893693c AA |
3877 | &calldata->arg.seq_args, |
3878 | &calldata->res.seq_res, 1, task)) | |
3879 | return; | |
5138fde0 | 3880 | rpc_call_start(task); |
faf5f49c TM |
3881 | } |
3882 | ||
963d8fe5 | 3883 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 3884 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 3885 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 3886 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
3887 | }; |
3888 | ||
a5d16a4d TM |
3889 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
3890 | struct nfs_open_context *ctx, | |
3891 | struct nfs4_lock_state *lsp, | |
3892 | struct nfs_seqid *seqid) | |
3893 | { | |
3894 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
3895 | struct rpc_message msg = { |
3896 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
3897 | .rpc_cred = ctx->cred, | |
3898 | }; | |
c970aa85 TM |
3899 | struct rpc_task_setup task_setup_data = { |
3900 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 3901 | .rpc_message = &msg, |
c970aa85 | 3902 | .callback_ops = &nfs4_locku_ops, |
101070ca | 3903 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
3904 | .flags = RPC_TASK_ASYNC, |
3905 | }; | |
a5d16a4d | 3906 | |
137d6aca FF |
3907 | /* Ensure this is an unlock - when canceling a lock, the |
3908 | * canceled lock is passed in, and it won't be an unlock. | |
3909 | */ | |
3910 | fl->fl_type = F_UNLCK; | |
3911 | ||
a5d16a4d TM |
3912 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
3913 | if (data == NULL) { | |
3914 | nfs_free_seqid(seqid); | |
3915 | return ERR_PTR(-ENOMEM); | |
3916 | } | |
3917 | ||
1174dd1f TM |
3918 | msg.rpc_argp = &data->arg; |
3919 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
3920 | task_setup_data.callback_data = data; |
3921 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
3922 | } |
3923 | ||
faf5f49c TM |
3924 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
3925 | { | |
19e03c57 | 3926 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 3927 | struct nfs_seqid *seqid; |
1da177e4 | 3928 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
3929 | struct rpc_task *task; |
3930 | int status = 0; | |
536ff0f8 | 3931 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 3932 | |
8d0a8a9d | 3933 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
3934 | /* Unlock _before_ we do the RPC call */ |
3935 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
3936 | down_read(&nfsi->rwsem); |
3937 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
3938 | up_read(&nfsi->rwsem); | |
9b073574 | 3939 | goto out; |
19e03c57 TM |
3940 | } |
3941 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 3942 | if (status != 0) |
9b073574 TM |
3943 | goto out; |
3944 | /* Is this a delegated lock? */ | |
3945 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
3946 | goto out; | |
8d0a8a9d | 3947 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 3948 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 3949 | status = -ENOMEM; |
911d1aaf | 3950 | if (seqid == NULL) |
9b073574 | 3951 | goto out; |
cd3758e3 | 3952 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
3953 | status = PTR_ERR(task); |
3954 | if (IS_ERR(task)) | |
9b073574 | 3955 | goto out; |
a5d16a4d | 3956 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 3957 | rpc_put_task(task); |
9b073574 | 3958 | out: |
536ff0f8 | 3959 | request->fl_flags = fl_flags; |
1da177e4 LT |
3960 | return status; |
3961 | } | |
3962 | ||
a5d16a4d TM |
3963 | struct nfs4_lockdata { |
3964 | struct nfs_lock_args arg; | |
3965 | struct nfs_lock_res res; | |
3966 | struct nfs4_lock_state *lsp; | |
3967 | struct nfs_open_context *ctx; | |
3968 | struct file_lock fl; | |
26e976a8 | 3969 | unsigned long timestamp; |
a5d16a4d TM |
3970 | int rpc_status; |
3971 | int cancelled; | |
66179efe | 3972 | struct nfs_server *server; |
a5d16a4d TM |
3973 | }; |
3974 | ||
3975 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
3976 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
3977 | gfp_t gfp_mask) | |
1da177e4 | 3978 | { |
a5d16a4d TM |
3979 | struct nfs4_lockdata *p; |
3980 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 3981 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 3982 | |
8535b2be | 3983 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
3984 | if (p == NULL) |
3985 | return NULL; | |
3986 | ||
3987 | p->arg.fh = NFS_FH(inode); | |
3988 | p->arg.fl = &p->fl; | |
8535b2be | 3989 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
3990 | if (p->arg.open_seqid == NULL) |
3991 | goto out_free; | |
8535b2be | 3992 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 3993 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 3994 | goto out_free_seqid; |
a5d16a4d | 3995 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 3996 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 3997 | p->arg.lock_owner.id = lsp->ls_id.id; |
c1d51931 | 3998 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 3999 | p->lsp = lsp; |
66179efe | 4000 | p->server = server; |
a5d16a4d TM |
4001 | atomic_inc(&lsp->ls_count); |
4002 | p->ctx = get_nfs_open_context(ctx); | |
4003 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4004 | return p; | |
2f74c0a0 TM |
4005 | out_free_seqid: |
4006 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4007 | out_free: |
4008 | kfree(p); | |
4009 | return NULL; | |
4010 | } | |
4011 | ||
4012 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4013 | { | |
4014 | struct nfs4_lockdata *data = calldata; | |
4015 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4016 | |
3110ff80 | 4017 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
4018 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
4019 | return; | |
a5d16a4d TM |
4020 | /* Do we need to do an open_to_lock_owner? */ |
4021 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
4022 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
4023 | return; | |
a5d16a4d TM |
4024 | data->arg.open_stateid = &state->stateid; |
4025 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4026 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4027 | } else |
4028 | data->arg.new_lock_owner = 0; | |
26e976a8 | 4029 | data->timestamp = jiffies; |
035168ab TM |
4030 | if (nfs4_setup_sequence(data->server, |
4031 | &data->arg.seq_args, | |
66179efe AA |
4032 | &data->res.seq_res, 1, task)) |
4033 | return; | |
5138fde0 | 4034 | rpc_call_start(task); |
3110ff80 | 4035 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
a5d16a4d TM |
4036 | } |
4037 | ||
b257957e AB |
4038 | static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata) |
4039 | { | |
4040 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
4041 | nfs4_lock_prepare(task, calldata); | |
4042 | } | |
4043 | ||
a5d16a4d TM |
4044 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4045 | { | |
4046 | struct nfs4_lockdata *data = calldata; | |
4047 | ||
3110ff80 | 4048 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4049 | |
14516c3a TM |
4050 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4051 | return; | |
66179efe | 4052 | |
a5d16a4d | 4053 | data->rpc_status = task->tk_status; |
a5d16a4d | 4054 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4055 | if (data->rpc_status == 0) |
4056 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4057 | else | |
4058 | goto out; | |
4059 | } | |
4060 | if (data->rpc_status == 0) { | |
4061 | memcpy(data->lsp->ls_stateid.data, data->res.stateid.data, | |
4062 | sizeof(data->lsp->ls_stateid.data)); | |
4063 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; | |
88be9f99 | 4064 | renew_lease(NFS_SERVER(data->ctx->path.dentry->d_inode), data->timestamp); |
a5d16a4d | 4065 | } |
a5d16a4d | 4066 | out: |
3110ff80 | 4067 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4068 | } |
4069 | ||
4070 | static void nfs4_lock_release(void *calldata) | |
4071 | { | |
4072 | struct nfs4_lockdata *data = calldata; | |
4073 | ||
3110ff80 | 4074 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4075 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4076 | if (data->cancelled != 0) { |
4077 | struct rpc_task *task; | |
4078 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4079 | data->arg.lock_seqid); | |
4080 | if (!IS_ERR(task)) | |
e6b3c4db | 4081 | rpc_put_task(task); |
3110ff80 | 4082 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4083 | } else |
4084 | nfs_free_seqid(data->arg.lock_seqid); | |
4085 | nfs4_put_lock_state(data->lsp); | |
4086 | put_nfs_open_context(data->ctx); | |
4087 | kfree(data); | |
3110ff80 | 4088 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4089 | } |
4090 | ||
4091 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4092 | .rpc_call_prepare = nfs4_lock_prepare, | |
4093 | .rpc_call_done = nfs4_lock_done, | |
4094 | .rpc_release = nfs4_lock_release, | |
4095 | }; | |
4096 | ||
b257957e AB |
4097 | static const struct rpc_call_ops nfs4_recover_lock_ops = { |
4098 | .rpc_call_prepare = nfs4_recover_lock_prepare, | |
4099 | .rpc_call_done = nfs4_lock_done, | |
4100 | .rpc_release = nfs4_lock_release, | |
4101 | }; | |
4102 | ||
2bee72a6 TM |
4103 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4104 | { | |
4105 | struct nfs_client *clp = server->nfs_client; | |
4106 | struct nfs4_state *state = lsp->ls_state; | |
4107 | ||
4108 | switch (error) { | |
4109 | case -NFS4ERR_ADMIN_REVOKED: | |
4110 | case -NFS4ERR_BAD_STATEID: | |
4111 | case -NFS4ERR_EXPIRED: | |
4112 | if (new_lock_owner != 0 || | |
4113 | (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) | |
4114 | nfs4_state_mark_reclaim_nograce(clp, state); | |
4115 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; | |
a2c0b9e2 TM |
4116 | break; |
4117 | case -NFS4ERR_STALE_STATEID: | |
4118 | if (new_lock_owner != 0 || | |
4119 | (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) | |
4120 | nfs4_state_mark_reclaim_reboot(clp, state); | |
4121 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; | |
2bee72a6 TM |
4122 | }; |
4123 | } | |
4124 | ||
afe6c27c | 4125 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4126 | { |
4127 | struct nfs4_lockdata *data; | |
4128 | struct rpc_task *task; | |
5138fde0 TM |
4129 | struct rpc_message msg = { |
4130 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4131 | .rpc_cred = state->owner->so_cred, | |
4132 | }; | |
c970aa85 TM |
4133 | struct rpc_task_setup task_setup_data = { |
4134 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4135 | .rpc_message = &msg, |
c970aa85 | 4136 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4137 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4138 | .flags = RPC_TASK_ASYNC, |
4139 | }; | |
a5d16a4d TM |
4140 | int ret; |
4141 | ||
3110ff80 | 4142 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4143 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4144 | fl->fl_u.nfs4_fl.owner, |
4145 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4146 | if (data == NULL) |
4147 | return -ENOMEM; | |
4148 | if (IS_SETLKW(cmd)) | |
4149 | data->arg.block = 1; | |
b257957e AB |
4150 | if (recovery_type > NFS_LOCK_NEW) { |
4151 | if (recovery_type == NFS_LOCK_RECLAIM) | |
afe6c27c | 4152 | data->arg.reclaim = NFS_LOCK_RECLAIM; |
b257957e AB |
4153 | task_setup_data.callback_ops = &nfs4_recover_lock_ops; |
4154 | } | |
1174dd1f TM |
4155 | msg.rpc_argp = &data->arg; |
4156 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4157 | task_setup_data.callback_data = data; |
4158 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 4159 | if (IS_ERR(task)) |
a5d16a4d | 4160 | return PTR_ERR(task); |
a5d16a4d TM |
4161 | ret = nfs4_wait_for_completion_rpc_task(task); |
4162 | if (ret == 0) { | |
4163 | ret = data->rpc_status; | |
2bee72a6 TM |
4164 | if (ret) |
4165 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4166 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4167 | } else |
4168 | data->cancelled = 1; | |
e6b3c4db | 4169 | rpc_put_task(task); |
3110ff80 | 4170 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4171 | return ret; |
1da177e4 LT |
4172 | } |
4173 | ||
4174 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4175 | { | |
202b50dc TM |
4176 | struct nfs_server *server = NFS_SERVER(state->inode); |
4177 | struct nfs4_exception exception = { }; | |
4178 | int err; | |
4179 | ||
4180 | do { | |
42a2d13e TM |
4181 | /* Cache the lock if possible... */ |
4182 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4183 | return 0; | |
afe6c27c | 4184 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4185 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4186 | break; |
4187 | nfs4_handle_exception(server, err, &exception); | |
4188 | } while (exception.retry); | |
4189 | return err; | |
1da177e4 LT |
4190 | } |
4191 | ||
4192 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4193 | { | |
202b50dc TM |
4194 | struct nfs_server *server = NFS_SERVER(state->inode); |
4195 | struct nfs4_exception exception = { }; | |
4196 | int err; | |
4197 | ||
6bfc93ef TM |
4198 | err = nfs4_set_lock_state(state, request); |
4199 | if (err != 0) | |
4200 | return err; | |
202b50dc | 4201 | do { |
42a2d13e TM |
4202 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4203 | return 0; | |
afe6c27c | 4204 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4205 | switch (err) { |
4206 | default: | |
4207 | goto out; | |
4208 | case -NFS4ERR_GRACE: | |
4209 | case -NFS4ERR_DELAY: | |
4210 | nfs4_handle_exception(server, err, &exception); | |
4211 | err = 0; | |
4212 | } | |
202b50dc | 4213 | } while (exception.retry); |
a9ed2e25 | 4214 | out: |
202b50dc | 4215 | return err; |
1da177e4 LT |
4216 | } |
4217 | ||
4218 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4219 | { | |
19e03c57 | 4220 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4221 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 4222 | int status = -ENOLCK; |
1da177e4 | 4223 | |
8e469ebd TM |
4224 | if ((fl_flags & FL_POSIX) && |
4225 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
4226 | goto out; | |
6bfc93ef | 4227 | /* Is this a delegated open? */ |
6bfc93ef TM |
4228 | status = nfs4_set_lock_state(state, request); |
4229 | if (status != 0) | |
4230 | goto out; | |
01c3b861 TM |
4231 | request->fl_flags |= FL_ACCESS; |
4232 | status = do_vfs_lock(request->fl_file, request); | |
4233 | if (status < 0) | |
4234 | goto out; | |
19e03c57 | 4235 | down_read(&nfsi->rwsem); |
01c3b861 | 4236 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4237 | /* Yes: cache locks! */ |
01c3b861 | 4238 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4239 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4240 | status = do_vfs_lock(request->fl_file, request); | |
4241 | goto out_unlock; | |
01c3b861 | 4242 | } |
afe6c27c | 4243 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 4244 | if (status != 0) |
01c3b861 | 4245 | goto out_unlock; |
6bfc93ef | 4246 | /* Note: we always want to sleep here! */ |
01c3b861 | 4247 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4248 | if (do_vfs_lock(request->fl_file, request) < 0) |
3110ff80 | 4249 | printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __func__); |
01c3b861 | 4250 | out_unlock: |
19e03c57 | 4251 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4252 | out: |
4253 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4254 | return status; |
4255 | } | |
4256 | ||
4257 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4258 | { | |
4259 | struct nfs4_exception exception = { }; | |
4260 | int err; | |
4261 | ||
4262 | do { | |
965b5d67 TM |
4263 | err = _nfs4_proc_setlk(state, cmd, request); |
4264 | if (err == -NFS4ERR_DENIED) | |
4265 | err = -EAGAIN; | |
1da177e4 | 4266 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4267 | err, &exception); |
1da177e4 LT |
4268 | } while (exception.retry); |
4269 | return err; | |
4270 | } | |
4271 | ||
4272 | static int | |
4273 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
4274 | { | |
4275 | struct nfs_open_context *ctx; | |
4276 | struct nfs4_state *state; | |
4277 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
4278 | int status; | |
4279 | ||
4280 | /* verify open state */ | |
cd3758e3 | 4281 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
4282 | state = ctx->state; |
4283 | ||
4284 | if (request->fl_start < 0 || request->fl_end < 0) | |
4285 | return -EINVAL; | |
4286 | ||
d953126a TM |
4287 | if (IS_GETLK(cmd)) { |
4288 | if (state != NULL) | |
4289 | return nfs4_proc_getlk(state, F_GETLK, request); | |
4290 | return 0; | |
4291 | } | |
1da177e4 LT |
4292 | |
4293 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
4294 | return -EINVAL; | |
4295 | ||
d953126a TM |
4296 | if (request->fl_type == F_UNLCK) { |
4297 | if (state != NULL) | |
4298 | return nfs4_proc_unlck(state, cmd, request); | |
4299 | return 0; | |
4300 | } | |
1da177e4 | 4301 | |
d953126a TM |
4302 | if (state == NULL) |
4303 | return -ENOLCK; | |
1da177e4 LT |
4304 | do { |
4305 | status = nfs4_proc_setlk(state, cmd, request); | |
4306 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
4307 | break; | |
4308 | timeout = nfs4_set_lock_task_retry(timeout); | |
4309 | status = -ERESTARTSYS; | |
4310 | if (signalled()) | |
4311 | break; | |
4312 | } while(status < 0); | |
1da177e4 LT |
4313 | return status; |
4314 | } | |
4315 | ||
888e694c TM |
4316 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
4317 | { | |
4318 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4319 | struct nfs4_exception exception = { }; | |
4320 | int err; | |
4321 | ||
4322 | err = nfs4_set_lock_state(state, fl); | |
4323 | if (err != 0) | |
4324 | goto out; | |
4325 | do { | |
afe6c27c | 4326 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
4327 | switch (err) { |
4328 | default: | |
4329 | printk(KERN_ERR "%s: unhandled error %d.\n", | |
4330 | __func__, err); | |
4331 | case 0: | |
965b5d67 | 4332 | case -ESTALE: |
d5122201 TM |
4333 | goto out; |
4334 | case -NFS4ERR_EXPIRED: | |
4335 | case -NFS4ERR_STALE_CLIENTID: | |
965b5d67 | 4336 | case -NFS4ERR_STALE_STATEID: |
74e7bb73 RL |
4337 | case -NFS4ERR_BADSESSION: |
4338 | case -NFS4ERR_BADSLOT: | |
4339 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4340 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4341 | case -NFS4ERR_DEADSESSION: | |
d5122201 TM |
4342 | nfs4_schedule_state_recovery(server->nfs_client); |
4343 | goto out; | |
965b5d67 TM |
4344 | case -ERESTARTSYS: |
4345 | /* | |
4346 | * The show must go on: exit, but mark the | |
4347 | * stateid as needing recovery. | |
4348 | */ | |
4349 | case -NFS4ERR_ADMIN_REVOKED: | |
4350 | case -NFS4ERR_BAD_STATEID: | |
4351 | case -NFS4ERR_OPENMODE: | |
4352 | nfs4_state_mark_reclaim_nograce(server->nfs_client, state); | |
4353 | err = 0; | |
4354 | goto out; | |
168667c4 TM |
4355 | case -EKEYEXPIRED: |
4356 | /* | |
4357 | * User RPCSEC_GSS context has expired. | |
4358 | * We cannot recover this stateid now, so | |
4359 | * skip it and allow recovery thread to | |
4360 | * proceed. | |
4361 | */ | |
4362 | err = 0; | |
4363 | goto out; | |
965b5d67 TM |
4364 | case -ENOMEM: |
4365 | case -NFS4ERR_DENIED: | |
4366 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
4367 | err = 0; | |
4368 | goto out; | |
d5122201 TM |
4369 | case -NFS4ERR_DELAY: |
4370 | break; | |
4371 | } | |
888e694c TM |
4372 | err = nfs4_handle_exception(server, err, &exception); |
4373 | } while (exception.retry); | |
4374 | out: | |
4375 | return err; | |
4376 | } | |
6b3b5496 | 4377 | |
d3c7b7cc TM |
4378 | static void nfs4_release_lockowner_release(void *calldata) |
4379 | { | |
4380 | kfree(calldata); | |
4381 | } | |
4382 | ||
4383 | const struct rpc_call_ops nfs4_release_lockowner_ops = { | |
4384 | .rpc_release = nfs4_release_lockowner_release, | |
4385 | }; | |
4386 | ||
4387 | void nfs4_release_lockowner(const struct nfs4_lock_state *lsp) | |
4388 | { | |
4389 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
4390 | struct nfs_release_lockowner_args *args; | |
4391 | struct rpc_message msg = { | |
4392 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
4393 | }; | |
4394 | ||
4395 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
4396 | return; | |
4397 | args = kmalloc(sizeof(*args), GFP_NOFS); | |
4398 | if (!args) | |
4399 | return; | |
4400 | args->lock_owner.clientid = server->nfs_client->cl_clientid; | |
4401 | args->lock_owner.id = lsp->ls_id.id; | |
4402 | msg.rpc_argp = args; | |
4403 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, args); | |
4404 | } | |
4405 | ||
aa1870af BF |
4406 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
4407 | ||
64c2ce8b AK |
4408 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
4409 | const void *buf, size_t buflen, | |
4410 | int flags, int type) | |
6b3b5496 | 4411 | { |
64c2ce8b AK |
4412 | if (strcmp(key, "") != 0) |
4413 | return -EINVAL; | |
4b580ee3 | 4414 | |
64c2ce8b | 4415 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4416 | } |
4417 | ||
64c2ce8b AK |
4418 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
4419 | void *buf, size_t buflen, int type) | |
6b3b5496 | 4420 | { |
64c2ce8b AK |
4421 | if (strcmp(key, "") != 0) |
4422 | return -EINVAL; | |
aa1870af | 4423 | |
64c2ce8b | 4424 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4425 | } |
4426 | ||
64c2ce8b AK |
4427 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
4428 | size_t list_len, const char *name, | |
4429 | size_t name_len, int type) | |
6b3b5496 | 4430 | { |
64c2ce8b | 4431 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 4432 | |
096455a2 BF |
4433 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
4434 | return 0; | |
64c2ce8b AK |
4435 | |
4436 | if (list && len <= list_len) | |
4437 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 4438 | return len; |
6b3b5496 BF |
4439 | } |
4440 | ||
69aaaae1 TM |
4441 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
4442 | { | |
4443 | if (!((fattr->valid & NFS_ATTR_FATTR_FILEID) && | |
4444 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
4445 | (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL))) | |
4446 | return; | |
4447 | ||
4448 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
4449 | NFS_ATTR_FATTR_NLINK; | |
4450 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; | |
4451 | fattr->nlink = 2; | |
4452 | } | |
4453 | ||
56659e99 | 4454 | int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, |
7aaa0b3b | 4455 | struct nfs4_fs_locations *fs_locations, struct page *page) |
683b57b4 TM |
4456 | { |
4457 | struct nfs_server *server = NFS_SERVER(dir); | |
4458 | u32 bitmask[2] = { | |
361e624f MN |
4459 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
4460 | [1] = FATTR4_WORD1_MOUNTED_ON_FILEID, | |
683b57b4 TM |
4461 | }; |
4462 | struct nfs4_fs_locations_arg args = { | |
4463 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 4464 | .name = name, |
683b57b4 TM |
4465 | .page = page, |
4466 | .bitmask = bitmask, | |
4467 | }; | |
22958463 BH |
4468 | struct nfs4_fs_locations_res res = { |
4469 | .fs_locations = fs_locations, | |
4470 | }; | |
683b57b4 TM |
4471 | struct rpc_message msg = { |
4472 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
4473 | .rpc_argp = &args, | |
22958463 | 4474 | .rpc_resp = &res, |
683b57b4 TM |
4475 | }; |
4476 | int status; | |
4477 | ||
3110ff80 | 4478 | dprintk("%s: start\n", __func__); |
c228fd3a | 4479 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 4480 | fs_locations->server = server; |
830b8e33 | 4481 | fs_locations->nlocations = 0; |
cccef3b9 | 4482 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
69aaaae1 | 4483 | nfs_fixup_referral_attributes(&fs_locations->fattr); |
3110ff80 | 4484 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
4485 | return status; |
4486 | } | |
4487 | ||
557134a3 | 4488 | #ifdef CONFIG_NFS_V4_1 |
99fe60d0 BH |
4489 | /* |
4490 | * nfs4_proc_exchange_id() | |
4491 | * | |
4492 | * Since the clientid has expired, all compounds using sessions | |
4493 | * associated with the stale clientid will be returning | |
4494 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
4495 | * be in some phase of session reset. | |
4496 | */ | |
4d643d1d | 4497 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
4498 | { |
4499 | nfs4_verifier verifier; | |
4500 | struct nfs41_exchange_id_args args = { | |
4501 | .client = clp, | |
4502 | .flags = clp->cl_exchange_flags, | |
4503 | }; | |
4504 | struct nfs41_exchange_id_res res = { | |
4505 | .client = clp, | |
4506 | }; | |
4507 | int status; | |
4508 | struct rpc_message msg = { | |
4509 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
4510 | .rpc_argp = &args, | |
4511 | .rpc_resp = &res, | |
4512 | .rpc_cred = cred, | |
4513 | }; | |
4514 | __be32 *p; | |
4515 | ||
4516 | dprintk("--> %s\n", __func__); | |
4517 | BUG_ON(clp == NULL); | |
a7b72103 | 4518 | |
7b183d0d AB |
4519 | /* Remove server-only flags */ |
4520 | args.flags &= ~EXCHGID4_FLAG_CONFIRMED_R; | |
4521 | ||
99fe60d0 BH |
4522 | p = (u32 *)verifier.data; |
4523 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); | |
4524 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
4525 | args.verifier = &verifier; | |
4526 | ||
4527 | while (1) { | |
4528 | args.id_len = scnprintf(args.id, sizeof(args.id), | |
4529 | "%s/%s %u", | |
4530 | clp->cl_ipaddr, | |
4531 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4532 | RPC_DISPLAY_ADDR), | |
4533 | clp->cl_id_uniquifier); | |
4534 | ||
4535 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
4536 | ||
180b62a3 | 4537 | if (status != -NFS4ERR_CLID_INUSE) |
99fe60d0 BH |
4538 | break; |
4539 | ||
4540 | if (signalled()) | |
4541 | break; | |
4542 | ||
4543 | if (++clp->cl_id_uniquifier == 0) | |
4544 | break; | |
4545 | } | |
4546 | ||
4547 | dprintk("<-- %s status= %d\n", __func__, status); | |
4548 | return status; | |
4549 | } | |
4550 | ||
2050f0cc AA |
4551 | struct nfs4_get_lease_time_data { |
4552 | struct nfs4_get_lease_time_args *args; | |
4553 | struct nfs4_get_lease_time_res *res; | |
4554 | struct nfs_client *clp; | |
4555 | }; | |
4556 | ||
4557 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
4558 | void *calldata) | |
4559 | { | |
4560 | int ret; | |
4561 | struct nfs4_get_lease_time_data *data = | |
4562 | (struct nfs4_get_lease_time_data *)calldata; | |
4563 | ||
4564 | dprintk("--> %s\n", __func__); | |
689cf5c1 | 4565 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
2050f0cc AA |
4566 | /* just setup sequence, do not trigger session recovery |
4567 | since we're invoked within one */ | |
4568 | ret = nfs41_setup_sequence(data->clp->cl_session, | |
689cf5c1 AB |
4569 | &data->args->la_seq_args, |
4570 | &data->res->lr_seq_res, 0, task); | |
2050f0cc AA |
4571 | |
4572 | BUG_ON(ret == -EAGAIN); | |
4573 | rpc_call_start(task); | |
4574 | dprintk("<-- %s\n", __func__); | |
4575 | } | |
4576 | ||
4577 | /* | |
4578 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
4579 | * from sequence operation or clientid errors. | |
4580 | */ | |
4581 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
4582 | { | |
4583 | struct nfs4_get_lease_time_data *data = | |
4584 | (struct nfs4_get_lease_time_data *)calldata; | |
4585 | ||
4586 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
4587 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
4588 | return; | |
2050f0cc AA |
4589 | switch (task->tk_status) { |
4590 | case -NFS4ERR_DELAY: | |
4591 | case -NFS4ERR_GRACE: | |
4592 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
4593 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
4594 | task->tk_status = 0; | |
0110ee15 | 4595 | nfs_restart_rpc(task, data->clp); |
2050f0cc AA |
4596 | return; |
4597 | } | |
2050f0cc AA |
4598 | dprintk("<-- %s\n", __func__); |
4599 | } | |
4600 | ||
4601 | struct rpc_call_ops nfs4_get_lease_time_ops = { | |
4602 | .rpc_call_prepare = nfs4_get_lease_time_prepare, | |
4603 | .rpc_call_done = nfs4_get_lease_time_done, | |
4604 | }; | |
4605 | ||
4606 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
4607 | { | |
4608 | struct rpc_task *task; | |
4609 | struct nfs4_get_lease_time_args args; | |
4610 | struct nfs4_get_lease_time_res res = { | |
4611 | .lr_fsinfo = fsinfo, | |
4612 | }; | |
4613 | struct nfs4_get_lease_time_data data = { | |
4614 | .args = &args, | |
4615 | .res = &res, | |
4616 | .clp = clp, | |
4617 | }; | |
4618 | struct rpc_message msg = { | |
4619 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
4620 | .rpc_argp = &args, | |
4621 | .rpc_resp = &res, | |
4622 | }; | |
4623 | struct rpc_task_setup task_setup = { | |
4624 | .rpc_client = clp->cl_rpcclient, | |
4625 | .rpc_message = &msg, | |
4626 | .callback_ops = &nfs4_get_lease_time_ops, | |
4627 | .callback_data = &data | |
4628 | }; | |
4629 | int status; | |
4630 | ||
2050f0cc AA |
4631 | dprintk("--> %s\n", __func__); |
4632 | task = rpc_run_task(&task_setup); | |
4633 | ||
4634 | if (IS_ERR(task)) | |
4635 | status = PTR_ERR(task); | |
4636 | else { | |
4637 | status = task->tk_status; | |
4638 | rpc_put_task(task); | |
4639 | } | |
4640 | dprintk("<-- %s return %d\n", __func__, status); | |
4641 | ||
4642 | return status; | |
4643 | } | |
4644 | ||
b73dafa7 RL |
4645 | /* |
4646 | * Reset a slot table | |
4647 | */ | |
104aeba4 AA |
4648 | static int nfs4_reset_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs, |
4649 | int ivalue) | |
ac72b7b3 | 4650 | { |
104aeba4 | 4651 | struct nfs4_slot *new = NULL; |
b73dafa7 | 4652 | int i; |
ac72b7b3 AA |
4653 | int ret = 0; |
4654 | ||
104aeba4 AA |
4655 | dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__, |
4656 | max_reqs, tbl->max_slots); | |
ac72b7b3 | 4657 | |
104aeba4 AA |
4658 | /* Does the newly negotiated max_reqs match the existing slot table? */ |
4659 | if (max_reqs != tbl->max_slots) { | |
4660 | ret = -ENOMEM; | |
4661 | new = kmalloc(max_reqs * sizeof(struct nfs4_slot), | |
8535b2be | 4662 | GFP_NOFS); |
104aeba4 AA |
4663 | if (!new) |
4664 | goto out; | |
4665 | ret = 0; | |
4666 | kfree(tbl->slots); | |
ac72b7b3 AA |
4667 | } |
4668 | spin_lock(&tbl->slot_tbl_lock); | |
104aeba4 AA |
4669 | if (new) { |
4670 | tbl->slots = new; | |
4671 | tbl->max_slots = max_reqs; | |
4672 | } | |
4673 | for (i = 0; i < tbl->max_slots; ++i) | |
b73dafa7 | 4674 | tbl->slots[i].seq_nr = ivalue; |
ac72b7b3 AA |
4675 | spin_unlock(&tbl->slot_tbl_lock); |
4676 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
4677 | tbl, tbl->slots, tbl->max_slots); | |
4678 | out: | |
4679 | dprintk("<-- %s: return %d\n", __func__, ret); | |
4680 | return ret; | |
4681 | } | |
4682 | ||
b73dafa7 RL |
4683 | /* |
4684 | * Reset the forechannel and backchannel slot tables | |
4685 | */ | |
4686 | static int nfs4_reset_slot_tables(struct nfs4_session *session) | |
4687 | { | |
4688 | int status; | |
4689 | ||
4690 | status = nfs4_reset_slot_table(&session->fc_slot_table, | |
104aeba4 | 4691 | session->fc_attrs.max_reqs, 1); |
f8625a6a RL |
4692 | if (status) |
4693 | return status; | |
4694 | ||
4695 | status = nfs4_reset_slot_table(&session->bc_slot_table, | |
104aeba4 | 4696 | session->bc_attrs.max_reqs, 0); |
b73dafa7 RL |
4697 | return status; |
4698 | } | |
4699 | ||
f8625a6a RL |
4700 | /* Destroy the slot table */ |
4701 | static void nfs4_destroy_slot_tables(struct nfs4_session *session) | |
4702 | { | |
4703 | if (session->fc_slot_table.slots != NULL) { | |
4704 | kfree(session->fc_slot_table.slots); | |
4705 | session->fc_slot_table.slots = NULL; | |
4706 | } | |
4707 | if (session->bc_slot_table.slots != NULL) { | |
4708 | kfree(session->bc_slot_table.slots); | |
4709 | session->bc_slot_table.slots = NULL; | |
4710 | } | |
4711 | return; | |
4712 | } | |
4713 | ||
fc931582 AA |
4714 | /* |
4715 | * Initialize slot table | |
4716 | */ | |
050047ce RL |
4717 | static int nfs4_init_slot_table(struct nfs4_slot_table *tbl, |
4718 | int max_slots, int ivalue) | |
fc931582 | 4719 | { |
fc931582 AA |
4720 | struct nfs4_slot *slot; |
4721 | int ret = -ENOMEM; | |
4722 | ||
4723 | BUG_ON(max_slots > NFS4_MAX_SLOT_TABLE); | |
4724 | ||
050047ce | 4725 | dprintk("--> %s: max_reqs=%u\n", __func__, max_slots); |
fc931582 | 4726 | |
8535b2be | 4727 | slot = kcalloc(max_slots, sizeof(struct nfs4_slot), GFP_NOFS); |
fc931582 AA |
4728 | if (!slot) |
4729 | goto out; | |
fc931582 AA |
4730 | ret = 0; |
4731 | ||
4732 | spin_lock(&tbl->slot_tbl_lock); | |
fc931582 AA |
4733 | tbl->max_slots = max_slots; |
4734 | tbl->slots = slot; | |
4735 | tbl->highest_used_slotid = -1; /* no slot is currently used */ | |
4736 | spin_unlock(&tbl->slot_tbl_lock); | |
4737 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
4738 | tbl, tbl->slots, tbl->max_slots); | |
4739 | out: | |
4740 | dprintk("<-- %s: return %d\n", __func__, ret); | |
4741 | return ret; | |
fc931582 AA |
4742 | } |
4743 | ||
050047ce RL |
4744 | /* |
4745 | * Initialize the forechannel and backchannel tables | |
4746 | */ | |
4747 | static int nfs4_init_slot_tables(struct nfs4_session *session) | |
4748 | { | |
f26468fb TM |
4749 | struct nfs4_slot_table *tbl; |
4750 | int status = 0; | |
050047ce | 4751 | |
f26468fb TM |
4752 | tbl = &session->fc_slot_table; |
4753 | if (tbl->slots == NULL) { | |
4754 | status = nfs4_init_slot_table(tbl, | |
4755 | session->fc_attrs.max_reqs, 1); | |
4756 | if (status) | |
4757 | return status; | |
4758 | } | |
050047ce | 4759 | |
f26468fb TM |
4760 | tbl = &session->bc_slot_table; |
4761 | if (tbl->slots == NULL) { | |
4762 | status = nfs4_init_slot_table(tbl, | |
4763 | session->bc_attrs.max_reqs, 0); | |
4764 | if (status) | |
4765 | nfs4_destroy_slot_tables(session); | |
4766 | } | |
f8625a6a RL |
4767 | |
4768 | return status; | |
557134a3 AA |
4769 | } |
4770 | ||
4771 | struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) | |
4772 | { | |
4773 | struct nfs4_session *session; | |
4774 | struct nfs4_slot_table *tbl; | |
4775 | ||
8535b2be | 4776 | session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); |
557134a3 AA |
4777 | if (!session) |
4778 | return NULL; | |
76db6d95 | 4779 | |
ea028ac9 | 4780 | init_completion(&session->complete); |
76db6d95 | 4781 | |
557134a3 | 4782 | tbl = &session->fc_slot_table; |
9dfdf404 | 4783 | tbl->highest_used_slotid = -1; |
557134a3 | 4784 | spin_lock_init(&tbl->slot_tbl_lock); |
689cf5c1 | 4785 | rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); |
f8625a6a RL |
4786 | |
4787 | tbl = &session->bc_slot_table; | |
9dfdf404 | 4788 | tbl->highest_used_slotid = -1; |
f8625a6a RL |
4789 | spin_lock_init(&tbl->slot_tbl_lock); |
4790 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); | |
4791 | ||
1055d76d TM |
4792 | session->session_state = 1<<NFS4_SESSION_INITING; |
4793 | ||
557134a3 AA |
4794 | session->clp = clp; |
4795 | return session; | |
4796 | } | |
4797 | ||
4798 | void nfs4_destroy_session(struct nfs4_session *session) | |
4799 | { | |
5a0ffe54 AA |
4800 | nfs4_proc_destroy_session(session); |
4801 | dprintk("%s Destroy backchannel for xprt %p\n", | |
4802 | __func__, session->clp->cl_rpcclient->cl_xprt); | |
4803 | xprt_destroy_backchannel(session->clp->cl_rpcclient->cl_xprt, | |
4804 | NFS41_BC_MIN_CALLBACKS); | |
f8625a6a | 4805 | nfs4_destroy_slot_tables(session); |
557134a3 AA |
4806 | kfree(session); |
4807 | } | |
4808 | ||
fc931582 AA |
4809 | /* |
4810 | * Initialize the values to be used by the client in CREATE_SESSION | |
4811 | * If nfs4_init_session set the fore channel request and response sizes, | |
4812 | * use them. | |
4813 | * | |
4814 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
4815 | * always set csa_cachethis to FALSE because the current implementation | |
4816 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
4817 | */ | |
4818 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
4819 | { | |
4820 | struct nfs4_session *session = args->client->cl_session; | |
4821 | unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz, | |
4822 | mxresp_sz = session->fc_attrs.max_resp_sz; | |
4823 | ||
4824 | if (mxrqst_sz == 0) | |
4825 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
4826 | if (mxresp_sz == 0) | |
4827 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
4828 | /* Fore channel attributes */ | |
4829 | args->fc_attrs.headerpadsz = 0; | |
4830 | args->fc_attrs.max_rqst_sz = mxrqst_sz; | |
4831 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 AA |
4832 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
4833 | args->fc_attrs.max_reqs = session->clp->cl_rpcclient->cl_xprt->max_reqs; | |
4834 | ||
4835 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 4836 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
4837 | __func__, |
4838 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 4839 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
4840 | |
4841 | /* Back channel attributes */ | |
4842 | args->bc_attrs.headerpadsz = 0; | |
4843 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; | |
4844 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
4845 | args->bc_attrs.max_resp_sz_cached = 0; | |
4846 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
4847 | args->bc_attrs.max_reqs = 1; | |
4848 | ||
4849 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
4850 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
4851 | __func__, | |
4852 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
4853 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
4854 | args->bc_attrs.max_reqs); | |
4855 | } | |
4856 | ||
43c2e885 | 4857 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 4858 | { |
43c2e885 BF |
4859 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
4860 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
4861 | ||
4862 | if (rcvd->headerpadsz > sent->headerpadsz) | |
4863 | return -EINVAL; | |
4864 | if (rcvd->max_resp_sz > sent->max_resp_sz) | |
4865 | return -EINVAL; | |
4866 | /* | |
4867 | * Our requested max_ops is the minimum we need; we're not | |
4868 | * prepared to break up compounds into smaller pieces than that. | |
4869 | * So, no point even trying to continue if the server won't | |
4870 | * cooperate: | |
4871 | */ | |
4872 | if (rcvd->max_ops < sent->max_ops) | |
4873 | return -EINVAL; | |
4874 | if (rcvd->max_reqs == 0) | |
4875 | return -EINVAL; | |
4876 | return 0; | |
8d35301d AA |
4877 | } |
4878 | ||
43c2e885 BF |
4879 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
4880 | { | |
4881 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
4882 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 4883 | |
43c2e885 BF |
4884 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
4885 | return -EINVAL; | |
4886 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
4887 | return -EINVAL; | |
4888 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
4889 | return -EINVAL; | |
4890 | /* These would render the backchannel useless: */ | |
4891 | if (rcvd->max_ops == 0) | |
4892 | return -EINVAL; | |
4893 | if (rcvd->max_reqs == 0) | |
4894 | return -EINVAL; | |
4895 | return 0; | |
4896 | } | |
8d35301d | 4897 | |
8d35301d AA |
4898 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
4899 | struct nfs4_session *session) | |
4900 | { | |
43c2e885 | 4901 | int ret; |
8d35301d | 4902 | |
43c2e885 BF |
4903 | ret = nfs4_verify_fore_channel_attrs(args, session); |
4904 | if (ret) | |
4905 | return ret; | |
4906 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
4907 | } |
4908 | ||
fc931582 AA |
4909 | static int _nfs4_proc_create_session(struct nfs_client *clp) |
4910 | { | |
4911 | struct nfs4_session *session = clp->cl_session; | |
4912 | struct nfs41_create_session_args args = { | |
4913 | .client = clp, | |
4914 | .cb_program = NFS4_CALLBACK, | |
4915 | }; | |
4916 | struct nfs41_create_session_res res = { | |
4917 | .client = clp, | |
4918 | }; | |
4919 | struct rpc_message msg = { | |
4920 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
4921 | .rpc_argp = &args, | |
4922 | .rpc_resp = &res, | |
4923 | }; | |
4924 | int status; | |
4925 | ||
4926 | nfs4_init_channel_attrs(&args); | |
0f91421e | 4927 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 AA |
4928 | |
4929 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, 0); | |
4930 | ||
8d35301d AA |
4931 | if (!status) |
4932 | /* Verify the session's negotiated channel_attrs values */ | |
4933 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
4934 | if (!status) { |
4935 | /* Increment the clientid slot sequence id */ | |
4936 | clp->cl_seqid++; | |
4937 | } | |
4938 | ||
4939 | return status; | |
4940 | } | |
4941 | ||
4942 | /* | |
4943 | * Issues a CREATE_SESSION operation to the server. | |
4944 | * It is the responsibility of the caller to verify the session is | |
4945 | * expired before calling this routine. | |
4946 | */ | |
f26468fb | 4947 | int nfs4_proc_create_session(struct nfs_client *clp) |
fc931582 AA |
4948 | { |
4949 | int status; | |
4950 | unsigned *ptr; | |
fc931582 AA |
4951 | struct nfs4_session *session = clp->cl_session; |
4952 | ||
4953 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
4954 | ||
4955 | status = _nfs4_proc_create_session(clp); | |
4956 | if (status) | |
4957 | goto out; | |
4958 | ||
f26468fb TM |
4959 | /* Init and reset the fore channel */ |
4960 | status = nfs4_init_slot_tables(session); | |
4961 | dprintk("slot table initialization returned %d\n", status); | |
4962 | if (status) | |
4963 | goto out; | |
4964 | status = nfs4_reset_slot_tables(session); | |
4965 | dprintk("slot table reset returned %d\n", status); | |
fc931582 AA |
4966 | if (status) |
4967 | goto out; | |
4968 | ||
4969 | ptr = (unsigned *)&session->sess_id.data[0]; | |
4970 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
4971 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
4972 | out: |
4973 | dprintk("<-- %s\n", __func__); | |
4974 | return status; | |
4975 | } | |
4976 | ||
0f3e66c6 AA |
4977 | /* |
4978 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
4979 | * The caller must serialize access to this routine. | |
4980 | */ | |
4981 | int nfs4_proc_destroy_session(struct nfs4_session *session) | |
4982 | { | |
4983 | int status = 0; | |
4984 | struct rpc_message msg; | |
4985 | ||
4986 | dprintk("--> nfs4_proc_destroy_session\n"); | |
4987 | ||
4988 | /* session is still being setup */ | |
4989 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
4990 | return status; | |
4991 | ||
4992 | msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION]; | |
4993 | msg.rpc_argp = session; | |
4994 | msg.rpc_resp = NULL; | |
4995 | msg.rpc_cred = NULL; | |
4996 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, 0); | |
4997 | ||
4998 | if (status) | |
4999 | printk(KERN_WARNING | |
5000 | "Got error %d from the server on DESTROY_SESSION. " | |
5001 | "Session has been destroyed regardless...\n", status); | |
5002 | ||
5003 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5004 | return status; | |
5005 | } | |
5006 | ||
fccba804 TM |
5007 | int nfs4_init_session(struct nfs_server *server) |
5008 | { | |
5009 | struct nfs_client *clp = server->nfs_client; | |
2449ea2e | 5010 | struct nfs4_session *session; |
68bf05ef | 5011 | unsigned int rsize, wsize; |
fccba804 TM |
5012 | int ret; |
5013 | ||
5014 | if (!nfs4_has_session(clp)) | |
5015 | return 0; | |
5016 | ||
1055d76d TM |
5017 | session = clp->cl_session; |
5018 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5019 | return 0; | |
5020 | ||
68bf05ef AA |
5021 | rsize = server->rsize; |
5022 | if (rsize == 0) | |
5023 | rsize = NFS_MAX_FILE_IO_SIZE; | |
5024 | wsize = server->wsize; | |
5025 | if (wsize == 0) | |
5026 | wsize = NFS_MAX_FILE_IO_SIZE; | |
5027 | ||
68bf05ef AA |
5028 | session->fc_attrs.max_rqst_sz = wsize + nfs41_maxwrite_overhead; |
5029 | session->fc_attrs.max_resp_sz = rsize + nfs41_maxread_overhead; | |
2449ea2e | 5030 | |
fccba804 TM |
5031 | ret = nfs4_recover_expired_lease(server); |
5032 | if (!ret) | |
5033 | ret = nfs4_check_client_ready(clp); | |
5034 | return ret; | |
5035 | } | |
5036 | ||
fc01cea9 AA |
5037 | /* |
5038 | * Renew the cl_session lease. | |
5039 | */ | |
d5f8d3fe TM |
5040 | struct nfs4_sequence_data { |
5041 | struct nfs_client *clp; | |
5042 | struct nfs4_sequence_args args; | |
5043 | struct nfs4_sequence_res res; | |
5044 | }; | |
5045 | ||
dc96aef9 AB |
5046 | static void nfs41_sequence_release(void *data) |
5047 | { | |
d5f8d3fe TM |
5048 | struct nfs4_sequence_data *calldata = data; |
5049 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5050 | |
7135840f AB |
5051 | if (atomic_read(&clp->cl_count) > 1) |
5052 | nfs4_schedule_state_renewal(clp); | |
5053 | nfs_put_client(clp); | |
d5f8d3fe | 5054 | kfree(calldata); |
dc96aef9 AB |
5055 | } |
5056 | ||
aa5190d0 TM |
5057 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5058 | { | |
5059 | switch(task->tk_status) { | |
5060 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5061 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5062 | return -EAGAIN; | |
5063 | default: | |
5064 | nfs4_schedule_state_recovery(clp); | |
5065 | } | |
5066 | return 0; | |
5067 | } | |
5068 | ||
dc96aef9 | 5069 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 5070 | { |
d5f8d3fe TM |
5071 | struct nfs4_sequence_data *calldata = data; |
5072 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 5073 | |
14516c3a TM |
5074 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
5075 | return; | |
fc01cea9 AA |
5076 | |
5077 | if (task->tk_status < 0) { | |
5078 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
5079 | if (atomic_read(&clp->cl_count) == 1) |
5080 | goto out; | |
fc01cea9 | 5081 | |
aa5190d0 TM |
5082 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
5083 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
5084 | return; |
5085 | } | |
5086 | } | |
fc01cea9 | 5087 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 5088 | out: |
fc01cea9 AA |
5089 | dprintk("<-- %s\n", __func__); |
5090 | } | |
5091 | ||
5092 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
5093 | { | |
d5f8d3fe TM |
5094 | struct nfs4_sequence_data *calldata = data; |
5095 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
5096 | struct nfs4_sequence_args *args; |
5097 | struct nfs4_sequence_res *res; | |
5098 | ||
fc01cea9 AA |
5099 | args = task->tk_msg.rpc_argp; |
5100 | res = task->tk_msg.rpc_resp; | |
5101 | ||
035168ab | 5102 | if (nfs41_setup_sequence(clp->cl_session, args, res, 0, task)) |
fc01cea9 AA |
5103 | return; |
5104 | rpc_call_start(task); | |
5105 | } | |
5106 | ||
5107 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
5108 | .rpc_call_done = nfs41_sequence_call_done, | |
5109 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 5110 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
5111 | }; |
5112 | ||
71ac6da9 | 5113 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) |
fc01cea9 | 5114 | { |
d5f8d3fe | 5115 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
5116 | struct rpc_message msg = { |
5117 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
5118 | .rpc_cred = cred, | |
5119 | }; | |
71ac6da9 TM |
5120 | struct rpc_task_setup task_setup_data = { |
5121 | .rpc_client = clp->cl_rpcclient, | |
5122 | .rpc_message = &msg, | |
5123 | .callback_ops = &nfs41_sequence_ops, | |
5124 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, | |
5125 | }; | |
fc01cea9 | 5126 | |
7135840f | 5127 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 5128 | return ERR_PTR(-EIO); |
dfb4f309 | 5129 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 5130 | if (calldata == NULL) { |
7135840f | 5131 | nfs_put_client(clp); |
71ac6da9 | 5132 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 5133 | } |
d5f8d3fe TM |
5134 | msg.rpc_argp = &calldata->args; |
5135 | msg.rpc_resp = &calldata->res; | |
5136 | calldata->clp = clp; | |
71ac6da9 | 5137 | task_setup_data.callback_data = calldata; |
fc01cea9 | 5138 | |
71ac6da9 TM |
5139 | return rpc_run_task(&task_setup_data); |
5140 | } | |
5141 | ||
5142 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5143 | { | |
5144 | struct rpc_task *task; | |
5145 | int ret = 0; | |
5146 | ||
5147 | task = _nfs41_proc_sequence(clp, cred); | |
5148 | if (IS_ERR(task)) | |
5149 | ret = PTR_ERR(task); | |
5150 | else | |
5151 | rpc_put_task(task); | |
5152 | dprintk("<-- %s status=%d\n", __func__, ret); | |
5153 | return ret; | |
5154 | } | |
5155 | ||
5156 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5157 | { | |
5158 | struct rpc_task *task; | |
5159 | int ret; | |
5160 | ||
5161 | task = _nfs41_proc_sequence(clp, cred); | |
5162 | if (IS_ERR(task)) { | |
5163 | ret = PTR_ERR(task); | |
5164 | goto out; | |
5165 | } | |
5166 | ret = rpc_wait_for_completion_task(task); | |
5167 | if (!ret) | |
5168 | ret = task->tk_status; | |
5169 | rpc_put_task(task); | |
5170 | out: | |
5171 | dprintk("<-- %s status=%d\n", __func__, ret); | |
5172 | return ret; | |
fc01cea9 AA |
5173 | } |
5174 | ||
fce5c838 RL |
5175 | struct nfs4_reclaim_complete_data { |
5176 | struct nfs_client *clp; | |
5177 | struct nfs41_reclaim_complete_args arg; | |
5178 | struct nfs41_reclaim_complete_res res; | |
5179 | }; | |
5180 | ||
5181 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
5182 | { | |
5183 | struct nfs4_reclaim_complete_data *calldata = data; | |
5184 | ||
b257957e | 5185 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
035168ab TM |
5186 | if (nfs41_setup_sequence(calldata->clp->cl_session, |
5187 | &calldata->arg.seq_args, | |
fce5c838 RL |
5188 | &calldata->res.seq_res, 0, task)) |
5189 | return; | |
5190 | ||
5191 | rpc_call_start(task); | |
5192 | } | |
5193 | ||
aa5190d0 TM |
5194 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5195 | { | |
5196 | switch(task->tk_status) { | |
5197 | case 0: | |
5198 | case -NFS4ERR_COMPLETE_ALREADY: | |
5199 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
5200 | break; | |
5201 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5202 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5203 | return -EAGAIN; | |
5204 | default: | |
5205 | nfs4_schedule_state_recovery(clp); | |
5206 | } | |
5207 | return 0; | |
5208 | } | |
5209 | ||
fce5c838 RL |
5210 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
5211 | { | |
5212 | struct nfs4_reclaim_complete_data *calldata = data; | |
5213 | struct nfs_client *clp = calldata->clp; | |
5214 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
5215 | ||
5216 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5217 | if (!nfs41_sequence_done(task, res)) |
5218 | return; | |
fce5c838 | 5219 | |
aa5190d0 TM |
5220 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
5221 | rpc_restart_call_prepare(task); | |
5222 | return; | |
5223 | } | |
fce5c838 RL |
5224 | dprintk("<-- %s\n", __func__); |
5225 | } | |
5226 | ||
5227 | static void nfs4_free_reclaim_complete_data(void *data) | |
5228 | { | |
5229 | struct nfs4_reclaim_complete_data *calldata = data; | |
5230 | ||
5231 | kfree(calldata); | |
5232 | } | |
5233 | ||
5234 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
5235 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
5236 | .rpc_call_done = nfs4_reclaim_complete_done, | |
5237 | .rpc_release = nfs4_free_reclaim_complete_data, | |
5238 | }; | |
5239 | ||
5240 | /* | |
5241 | * Issue a global reclaim complete. | |
5242 | */ | |
5243 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
5244 | { | |
5245 | struct nfs4_reclaim_complete_data *calldata; | |
5246 | struct rpc_task *task; | |
5247 | struct rpc_message msg = { | |
5248 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
5249 | }; | |
5250 | struct rpc_task_setup task_setup_data = { | |
5251 | .rpc_client = clp->cl_rpcclient, | |
5252 | .rpc_message = &msg, | |
5253 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
5254 | .flags = RPC_TASK_ASYNC, | |
5255 | }; | |
5256 | int status = -ENOMEM; | |
5257 | ||
5258 | dprintk("--> %s\n", __func__); | |
8535b2be | 5259 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
5260 | if (calldata == NULL) |
5261 | goto out; | |
5262 | calldata->clp = clp; | |
5263 | calldata->arg.one_fs = 0; | |
fce5c838 RL |
5264 | |
5265 | msg.rpc_argp = &calldata->arg; | |
5266 | msg.rpc_resp = &calldata->res; | |
5267 | task_setup_data.callback_data = calldata; | |
5268 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 5269 | if (IS_ERR(task)) { |
fce5c838 | 5270 | status = PTR_ERR(task); |
acf82b85 DC |
5271 | goto out; |
5272 | } | |
fce5c838 | 5273 | rpc_put_task(task); |
acf82b85 | 5274 | return 0; |
fce5c838 RL |
5275 | out: |
5276 | dprintk("<-- %s status=%d\n", __func__, status); | |
5277 | return status; | |
5278 | } | |
b1f69b75 AA |
5279 | |
5280 | static void | |
5281 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
5282 | { | |
5283 | struct nfs4_layoutget *lgp = calldata; | |
5284 | struct inode *ino = lgp->args.inode; | |
5285 | struct nfs_server *server = NFS_SERVER(ino); | |
5286 | ||
5287 | dprintk("--> %s\n", __func__); | |
5288 | if (nfs4_setup_sequence(server, &lgp->args.seq_args, | |
5289 | &lgp->res.seq_res, 0, task)) | |
5290 | return; | |
5291 | rpc_call_start(task); | |
5292 | } | |
5293 | ||
5294 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
5295 | { | |
5296 | struct nfs4_layoutget *lgp = calldata; | |
5297 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5298 | ||
5299 | dprintk("--> %s\n", __func__); | |
5300 | ||
5301 | if (!nfs4_sequence_done(task, &lgp->res.seq_res)) | |
5302 | return; | |
5303 | ||
5304 | switch (task->tk_status) { | |
5305 | case 0: | |
5306 | break; | |
5307 | case -NFS4ERR_LAYOUTTRYLATER: | |
5308 | case -NFS4ERR_RECALLCONFLICT: | |
5309 | task->tk_status = -NFS4ERR_DELAY; | |
5310 | /* Fall through */ | |
5311 | default: | |
5312 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
5313 | rpc_restart_call_prepare(task); | |
5314 | return; | |
5315 | } | |
5316 | } | |
5317 | lgp->status = task->tk_status; | |
5318 | dprintk("<-- %s\n", __func__); | |
5319 | } | |
5320 | ||
5321 | static void nfs4_layoutget_release(void *calldata) | |
5322 | { | |
5323 | struct nfs4_layoutget *lgp = calldata; | |
5324 | ||
5325 | dprintk("--> %s\n", __func__); | |
5326 | put_layout_hdr(lgp->args.inode); | |
5327 | if (lgp->res.layout.buf != NULL) | |
5328 | free_page((unsigned long) lgp->res.layout.buf); | |
5329 | put_nfs_open_context(lgp->args.ctx); | |
5330 | kfree(calldata); | |
5331 | dprintk("<-- %s\n", __func__); | |
5332 | } | |
5333 | ||
5334 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
5335 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
5336 | .rpc_call_done = nfs4_layoutget_done, | |
5337 | .rpc_release = nfs4_layoutget_release, | |
5338 | }; | |
5339 | ||
5340 | int nfs4_proc_layoutget(struct nfs4_layoutget *lgp) | |
5341 | { | |
5342 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5343 | struct rpc_task *task; | |
5344 | struct rpc_message msg = { | |
5345 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
5346 | .rpc_argp = &lgp->args, | |
5347 | .rpc_resp = &lgp->res, | |
5348 | }; | |
5349 | struct rpc_task_setup task_setup_data = { | |
5350 | .rpc_client = server->client, | |
5351 | .rpc_message = &msg, | |
5352 | .callback_ops = &nfs4_layoutget_call_ops, | |
5353 | .callback_data = lgp, | |
5354 | .flags = RPC_TASK_ASYNC, | |
5355 | }; | |
5356 | int status = 0; | |
5357 | ||
5358 | dprintk("--> %s\n", __func__); | |
5359 | ||
5360 | lgp->res.layout.buf = (void *)__get_free_page(GFP_NOFS); | |
5361 | if (lgp->res.layout.buf == NULL) { | |
5362 | nfs4_layoutget_release(lgp); | |
5363 | return -ENOMEM; | |
5364 | } | |
5365 | ||
5366 | lgp->res.seq_res.sr_slot = NULL; | |
5367 | task = rpc_run_task(&task_setup_data); | |
5368 | if (IS_ERR(task)) | |
5369 | return PTR_ERR(task); | |
5370 | status = nfs4_wait_for_completion_rpc_task(task); | |
5371 | if (status != 0) | |
5372 | goto out; | |
5373 | status = lgp->status; | |
5374 | if (status != 0) | |
5375 | goto out; | |
5376 | status = pnfs_layout_process(lgp); | |
5377 | out: | |
5378 | rpc_put_task(task); | |
5379 | dprintk("<-- %s status=%d\n", __func__, status); | |
5380 | return status; | |
5381 | } | |
5382 | ||
5383 | static int | |
5384 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
5385 | { | |
5386 | struct nfs4_getdeviceinfo_args args = { | |
5387 | .pdev = pdev, | |
5388 | }; | |
5389 | struct nfs4_getdeviceinfo_res res = { | |
5390 | .pdev = pdev, | |
5391 | }; | |
5392 | struct rpc_message msg = { | |
5393 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
5394 | .rpc_argp = &args, | |
5395 | .rpc_resp = &res, | |
5396 | }; | |
5397 | int status; | |
5398 | ||
5399 | dprintk("--> %s\n", __func__); | |
5400 | status = nfs4_call_sync(server, &msg, &args, &res, 0); | |
5401 | dprintk("<-- %s status=%d\n", __func__, status); | |
5402 | ||
5403 | return status; | |
5404 | } | |
5405 | ||
5406 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
5407 | { | |
5408 | struct nfs4_exception exception = { }; | |
5409 | int err; | |
5410 | ||
5411 | do { | |
5412 | err = nfs4_handle_exception(server, | |
5413 | _nfs4_proc_getdeviceinfo(server, pdev), | |
5414 | &exception); | |
5415 | } while (exception.retry); | |
5416 | return err; | |
5417 | } | |
5418 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
5419 | ||
557134a3 AA |
5420 | #endif /* CONFIG_NFS_V4_1 */ |
5421 | ||
591d71cb | 5422 | struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 5423 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 5424 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
5425 | .recover_open = nfs4_open_reclaim, |
5426 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 5427 | .establish_clid = nfs4_init_clientid, |
90a16617 | 5428 | .get_clid_cred = nfs4_get_setclientid_cred, |
1da177e4 LT |
5429 | }; |
5430 | ||
591d71cb AA |
5431 | #if defined(CONFIG_NFS_V4_1) |
5432 | struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { | |
5433 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, | |
5434 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
5435 | .recover_open = nfs4_open_reclaim, | |
5436 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 5437 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 5438 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 5439 | .reclaim_complete = nfs41_proc_reclaim_complete, |
591d71cb AA |
5440 | }; |
5441 | #endif /* CONFIG_NFS_V4_1 */ | |
5442 | ||
5443 | struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { | |
5444 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, | |
5445 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
5446 | .recover_open = nfs4_open_expired, | |
5447 | .recover_lock = nfs4_lock_expired, | |
5448 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 5449 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
5450 | }; |
5451 | ||
5452 | #if defined(CONFIG_NFS_V4_1) | |
5453 | struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { | |
7eff03ae | 5454 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 5455 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
1da177e4 LT |
5456 | .recover_open = nfs4_open_expired, |
5457 | .recover_lock = nfs4_lock_expired, | |
4d643d1d | 5458 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 5459 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 5460 | }; |
591d71cb | 5461 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 5462 | |
29fba38b BH |
5463 | struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
5464 | .sched_state_renewal = nfs4_proc_async_renew, | |
a7b72103 | 5465 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 5466 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
5467 | }; |
5468 | ||
5469 | #if defined(CONFIG_NFS_V4_1) | |
5470 | struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { | |
5471 | .sched_state_renewal = nfs41_proc_async_sequence, | |
a7b72103 | 5472 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 5473 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
5474 | }; |
5475 | #endif | |
5476 | ||
97dc1359 TM |
5477 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
5478 | .minor_version = 0, | |
5479 | .call_sync = _nfs4_call_sync, | |
e047a10c | 5480 | .validate_stateid = nfs4_validate_delegation_stateid, |
c48f4f35 TM |
5481 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
5482 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
5483 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
5484 | }; |
5485 | ||
5486 | #if defined(CONFIG_NFS_V4_1) | |
5487 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
5488 | .minor_version = 1, | |
5489 | .call_sync = _nfs4_call_sync_session, | |
e047a10c | 5490 | .validate_stateid = nfs41_validate_delegation_stateid, |
c48f4f35 TM |
5491 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
5492 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
5493 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
5494 | }; |
5495 | #endif | |
5496 | ||
97dc1359 TM |
5497 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
5498 | [0] = &nfs_v4_0_minor_ops, | |
5499 | #if defined(CONFIG_NFS_V4_1) | |
5500 | [1] = &nfs_v4_1_minor_ops, | |
5501 | #endif | |
5502 | }; | |
5503 | ||
92e1d5be | 5504 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
5505 | .permission = nfs_permission, |
5506 | .getattr = nfs_getattr, | |
5507 | .setattr = nfs_setattr, | |
64c2ce8b AK |
5508 | .getxattr = generic_getxattr, |
5509 | .setxattr = generic_setxattr, | |
5510 | .listxattr = generic_listxattr, | |
5511 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
5512 | }; |
5513 | ||
509de811 | 5514 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
5515 | .version = 4, /* protocol version */ |
5516 | .dentry_ops = &nfs4_dentry_operations, | |
5517 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 5518 | .file_inode_ops = &nfs4_file_inode_operations, |
1da177e4 LT |
5519 | .getroot = nfs4_proc_get_root, |
5520 | .getattr = nfs4_proc_getattr, | |
5521 | .setattr = nfs4_proc_setattr, | |
2b3de441 | 5522 | .lookupfh = nfs4_proc_lookupfh, |
1da177e4 LT |
5523 | .lookup = nfs4_proc_lookup, |
5524 | .access = nfs4_proc_access, | |
5525 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
5526 | .create = nfs4_proc_create, |
5527 | .remove = nfs4_proc_remove, | |
5528 | .unlink_setup = nfs4_proc_unlink_setup, | |
5529 | .unlink_done = nfs4_proc_unlink_done, | |
5530 | .rename = nfs4_proc_rename, | |
d3d4152a JL |
5531 | .rename_setup = nfs4_proc_rename_setup, |
5532 | .rename_done = nfs4_proc_rename_done, | |
1da177e4 LT |
5533 | .link = nfs4_proc_link, |
5534 | .symlink = nfs4_proc_symlink, | |
5535 | .mkdir = nfs4_proc_mkdir, | |
5536 | .rmdir = nfs4_proc_remove, | |
5537 | .readdir = nfs4_proc_readdir, | |
5538 | .mknod = nfs4_proc_mknod, | |
5539 | .statfs = nfs4_proc_statfs, | |
5540 | .fsinfo = nfs4_proc_fsinfo, | |
5541 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 5542 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
5543 | .decode_dirent = nfs4_decode_dirent, |
5544 | .read_setup = nfs4_proc_read_setup, | |
ec06c096 | 5545 | .read_done = nfs4_read_done, |
1da177e4 | 5546 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 5547 | .write_done = nfs4_write_done, |
1da177e4 | 5548 | .commit_setup = nfs4_proc_commit_setup, |
788e7a89 | 5549 | .commit_done = nfs4_commit_done, |
1da177e4 | 5550 | .lock = nfs4_proc_lock, |
e50a1c2e | 5551 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 5552 | .close_context = nfs4_close_context, |
2b484297 | 5553 | .open_context = nfs4_atomic_open, |
1da177e4 LT |
5554 | }; |
5555 | ||
64c2ce8b AK |
5556 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
5557 | .prefix = XATTR_NAME_NFSV4_ACL, | |
5558 | .list = nfs4_xattr_list_nfs4_acl, | |
5559 | .get = nfs4_xattr_get_nfs4_acl, | |
5560 | .set = nfs4_xattr_set_nfs4_acl, | |
5561 | }; | |
5562 | ||
5563 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
5564 | &nfs4_xattr_nfs4_acl_handler, | |
5565 | NULL | |
5566 | }; | |
5567 | ||
1da177e4 LT |
5568 | /* |
5569 | * Local variables: | |
5570 | * c-basic-offset: 8 | |
5571 | * End: | |
5572 | */ |