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