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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4proc.c | |
3 | * | |
4 | * Client-side procedure declarations for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/mm.h> | |
1da177e4 LT |
39 | #include <linux/delay.h> |
40 | #include <linux/errno.h> | |
41 | #include <linux/string.h> | |
5a0e3ad6 | 42 | #include <linux/slab.h> |
1da177e4 LT |
43 | #include <linux/sunrpc/clnt.h> |
44 | #include <linux/nfs.h> | |
45 | #include <linux/nfs4.h> | |
46 | #include <linux/nfs_fs.h> | |
47 | #include <linux/nfs_page.h> | |
1da177e4 | 48 | #include <linux/namei.h> |
02a913a7 | 49 | #include <linux/mount.h> |
99fe60d0 | 50 | #include <linux/module.h> |
5a0ffe54 | 51 | #include <linux/sunrpc/bc_xprt.h> |
64c2ce8b | 52 | #include <linux/xattr.h> |
1da177e4 | 53 | |
4ce79717 | 54 | #include "nfs4_fs.h" |
1da177e4 | 55 | #include "delegation.h" |
101070ca | 56 | #include "internal.h" |
006ea73e | 57 | #include "iostat.h" |
fc931582 | 58 | #include "callback.h" |
b1f69b75 | 59 | #include "pnfs.h" |
1da177e4 LT |
60 | |
61 | #define NFSDBG_FACILITY NFSDBG_PROC | |
62 | ||
2066fe89 | 63 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
64 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
65 | ||
a78cb57a TM |
66 | #define NFS4_MAX_LOOP_ON_RECOVER (10) |
67 | ||
cdd4e68b | 68 | struct nfs4_opendata; |
864472e9 | 69 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
b257957e | 70 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 71 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
9e33bed5 | 72 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); |
9936781d TM |
73 | static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr); |
74 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); | |
0ab64e0e TM |
75 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
76 | struct nfs_fattr *fattr, struct iattr *sattr, | |
77 | struct nfs4_state *state); | |
1da177e4 | 78 | |
1da177e4 | 79 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 80 | static int nfs4_map_errors(int err) |
1da177e4 | 81 | { |
52567b03 TM |
82 | if (err >= -1000) |
83 | return err; | |
84 | switch (err) { | |
85 | case -NFS4ERR_RESOURCE: | |
86 | return -EREMOTEIO; | |
87 | default: | |
1da177e4 | 88 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 89 | __func__, -err); |
52567b03 | 90 | break; |
1da177e4 | 91 | } |
52567b03 | 92 | return -EIO; |
1da177e4 LT |
93 | } |
94 | ||
95 | /* | |
96 | * This is our standard bitmap for GETATTR requests. | |
97 | */ | |
98 | const u32 nfs4_fattr_bitmap[2] = { | |
99 | FATTR4_WORD0_TYPE | |
100 | | FATTR4_WORD0_CHANGE | |
101 | | FATTR4_WORD0_SIZE | |
102 | | FATTR4_WORD0_FSID | |
103 | | FATTR4_WORD0_FILEID, | |
104 | FATTR4_WORD1_MODE | |
105 | | FATTR4_WORD1_NUMLINKS | |
106 | | FATTR4_WORD1_OWNER | |
107 | | FATTR4_WORD1_OWNER_GROUP | |
108 | | FATTR4_WORD1_RAWDEV | |
109 | | FATTR4_WORD1_SPACE_USED | |
110 | | FATTR4_WORD1_TIME_ACCESS | |
111 | | FATTR4_WORD1_TIME_METADATA | |
112 | | FATTR4_WORD1_TIME_MODIFY | |
113 | }; | |
114 | ||
115 | const u32 nfs4_statfs_bitmap[2] = { | |
116 | FATTR4_WORD0_FILES_AVAIL | |
117 | | FATTR4_WORD0_FILES_FREE | |
118 | | FATTR4_WORD0_FILES_TOTAL, | |
119 | FATTR4_WORD1_SPACE_AVAIL | |
120 | | FATTR4_WORD1_SPACE_FREE | |
121 | | FATTR4_WORD1_SPACE_TOTAL | |
122 | }; | |
123 | ||
4ce79717 | 124 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
125 | FATTR4_WORD0_MAXLINK |
126 | | FATTR4_WORD0_MAXNAME, | |
127 | 0 | |
128 | }; | |
129 | ||
130 | const u32 nfs4_fsinfo_bitmap[2] = { FATTR4_WORD0_MAXFILESIZE | |
131 | | FATTR4_WORD0_MAXREAD | |
132 | | FATTR4_WORD0_MAXWRITE | |
133 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 134 | FATTR4_WORD1_TIME_DELTA |
504913fb | 135 | | FATTR4_WORD1_FS_LAYOUT_TYPES |
1da177e4 LT |
136 | }; |
137 | ||
830b8e33 MN |
138 | const u32 nfs4_fs_locations_bitmap[2] = { |
139 | FATTR4_WORD0_TYPE | |
140 | | FATTR4_WORD0_CHANGE | |
141 | | FATTR4_WORD0_SIZE | |
142 | | FATTR4_WORD0_FSID | |
143 | | FATTR4_WORD0_FILEID | |
144 | | FATTR4_WORD0_FS_LOCATIONS, | |
145 | FATTR4_WORD1_MODE | |
146 | | FATTR4_WORD1_NUMLINKS | |
147 | | FATTR4_WORD1_OWNER | |
148 | | FATTR4_WORD1_OWNER_GROUP | |
149 | | FATTR4_WORD1_RAWDEV | |
150 | | FATTR4_WORD1_SPACE_USED | |
151 | | FATTR4_WORD1_TIME_ACCESS | |
152 | | FATTR4_WORD1_TIME_METADATA | |
153 | | FATTR4_WORD1_TIME_MODIFY | |
154 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
155 | }; | |
156 | ||
bc4785cd | 157 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
158 | struct nfs4_readdir_arg *readdir) |
159 | { | |
0dbb4c67 | 160 | __be32 *start, *p; |
1da177e4 LT |
161 | |
162 | BUG_ON(readdir->count < 80); | |
163 | if (cookie > 2) { | |
b7ef1956 | 164 | readdir->cookie = cookie; |
1da177e4 LT |
165 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
166 | return; | |
167 | } | |
168 | ||
169 | readdir->cookie = 0; | |
170 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
171 | if (cookie == 2) | |
172 | return; | |
173 | ||
174 | /* | |
175 | * NFSv4 servers do not return entries for '.' and '..' | |
176 | * Therefore, we fake these entries here. We let '.' | |
177 | * have cookie 0 and '..' have cookie 1. Note that | |
178 | * when talking to the server, we always send cookie 0 | |
179 | * instead of 1 or 2. | |
180 | */ | |
0dbb4c67 | 181 | start = p = kmap_atomic(*readdir->pages, KM_USER0); |
1da177e4 LT |
182 | |
183 | if (cookie == 0) { | |
184 | *p++ = xdr_one; /* next */ | |
185 | *p++ = xdr_zero; /* cookie, first word */ | |
186 | *p++ = xdr_one; /* cookie, second word */ | |
187 | *p++ = xdr_one; /* entry len */ | |
188 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
189 | p++; | |
190 | *p++ = xdr_one; /* bitmap length */ | |
191 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
192 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 193 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
194 | } |
195 | ||
196 | *p++ = xdr_one; /* next */ | |
197 | *p++ = xdr_zero; /* cookie, first word */ | |
198 | *p++ = xdr_two; /* cookie, second word */ | |
199 | *p++ = xdr_two; /* entry len */ | |
200 | memcpy(p, "..\0\0", 4); /* entry */ | |
201 | p++; | |
202 | *p++ = xdr_one; /* bitmap length */ | |
203 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
204 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 205 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
206 | |
207 | readdir->pgbase = (char *)p - (char *)start; | |
208 | readdir->count -= readdir->pgbase; | |
209 | kunmap_atomic(start, KM_USER0); | |
210 | } | |
211 | ||
65de872e TM |
212 | static int nfs4_wait_clnt_recover(struct nfs_client *clp) |
213 | { | |
214 | int res; | |
215 | ||
216 | might_sleep(); | |
217 | ||
e005e804 | 218 | res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING, |
72cb77f4 | 219 | nfs_wait_bit_killable, TASK_KILLABLE); |
65de872e TM |
220 | return res; |
221 | } | |
222 | ||
223 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) | |
224 | { | |
225 | int res = 0; | |
226 | ||
227 | might_sleep(); | |
228 | ||
229 | if (*timeout <= 0) | |
230 | *timeout = NFS4_POLL_RETRY_MIN; | |
231 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
232 | *timeout = NFS4_POLL_RETRY_MAX; | |
233 | schedule_timeout_killable(*timeout); | |
234 | if (fatal_signal_pending(current)) | |
235 | res = -ERESTARTSYS; | |
236 | *timeout <<= 1; | |
237 | return res; | |
238 | } | |
239 | ||
240 | /* This is the error handling routine for processes that are allowed | |
241 | * to sleep. | |
242 | */ | |
243 | static int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception) | |
244 | { | |
245 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 246 | struct nfs4_state *state = exception->state; |
65de872e TM |
247 | int ret = errorcode; |
248 | ||
249 | exception->retry = 0; | |
250 | switch(errorcode) { | |
251 | case 0: | |
252 | return 0; | |
9e33bed5 TM |
253 | case -NFS4ERR_ADMIN_REVOKED: |
254 | case -NFS4ERR_BAD_STATEID: | |
255 | case -NFS4ERR_OPENMODE: | |
256 | if (state == NULL) | |
257 | break; | |
258 | nfs4_state_mark_reclaim_nograce(clp, state); | |
a2c0b9e2 | 259 | goto do_state_recovery; |
65de872e | 260 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 261 | case -NFS4ERR_STALE_CLIENTID: |
65de872e | 262 | case -NFS4ERR_EXPIRED: |
a2c0b9e2 | 263 | goto do_state_recovery; |
03391693 | 264 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
265 | case -NFS4ERR_BADSESSION: |
266 | case -NFS4ERR_BADSLOT: | |
267 | case -NFS4ERR_BAD_HIGH_SLOT: | |
268 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
269 | case -NFS4ERR_DEADSESSION: | |
270 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
271 | case -NFS4ERR_SEQ_MISORDERED: | |
272 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
273 | errorcode); | |
0b9e2d41 | 274 | nfs4_schedule_state_recovery(clp); |
4745e315 | 275 | exception->retry = 1; |
b9179237 | 276 | break; |
03391693 | 277 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 278 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
279 | if (exception->timeout > HZ) { |
280 | /* We have retried a decent amount, time to | |
281 | * fail | |
282 | */ | |
283 | ret = -EBUSY; | |
284 | break; | |
285 | } | |
65de872e TM |
286 | case -NFS4ERR_GRACE: |
287 | case -NFS4ERR_DELAY: | |
2c643488 | 288 | case -EKEYEXPIRED: |
65de872e TM |
289 | ret = nfs4_delay(server->client, &exception->timeout); |
290 | if (ret != 0) | |
291 | break; | |
292 | case -NFS4ERR_OLD_STATEID: | |
293 | exception->retry = 1; | |
294 | } | |
295 | /* We failed to handle the error */ | |
296 | return nfs4_map_errors(ret); | |
a2c0b9e2 TM |
297 | do_state_recovery: |
298 | nfs4_schedule_state_recovery(clp); | |
299 | ret = nfs4_wait_clnt_recover(clp); | |
300 | if (ret == 0) | |
301 | exception->retry = 1; | |
302 | return ret; | |
65de872e TM |
303 | } |
304 | ||
305 | ||
452e9352 | 306 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 307 | { |
1da177e4 LT |
308 | spin_lock(&clp->cl_lock); |
309 | if (time_before(clp->cl_last_renewal,timestamp)) | |
310 | clp->cl_last_renewal = timestamp; | |
311 | spin_unlock(&clp->cl_lock); | |
312 | } | |
313 | ||
452e9352 TM |
314 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
315 | { | |
316 | do_renew_lease(server->nfs_client, timestamp); | |
317 | } | |
318 | ||
cccef3b9 AA |
319 | #if defined(CONFIG_NFS_V4_1) |
320 | ||
e2c4ab3c AA |
321 | /* |
322 | * nfs4_free_slot - free a slot and efficiently update slot table. | |
323 | * | |
324 | * freeing a slot is trivially done by clearing its respective bit | |
325 | * in the bitmap. | |
326 | * If the freed slotid equals highest_used_slotid we want to update it | |
327 | * so that the server would be able to size down the slot table if needed, | |
328 | * otherwise we know that the highest_used_slotid is still in use. | |
329 | * When updating highest_used_slotid there may be "holes" in the bitmap | |
330 | * so we need to scan down from highest_used_slotid to 0 looking for the now | |
331 | * highest slotid in use. | |
332 | * If none found, highest_used_slotid is set to -1. | |
35dc1d74 TM |
333 | * |
334 | * Must be called while holding tbl->slot_tbl_lock | |
e2c4ab3c AA |
335 | */ |
336 | static void | |
dfb4f309 | 337 | nfs4_free_slot(struct nfs4_slot_table *tbl, struct nfs4_slot *free_slot) |
e2c4ab3c | 338 | { |
dfb4f309 | 339 | int free_slotid = free_slot - tbl->slots; |
e2c4ab3c AA |
340 | int slotid = free_slotid; |
341 | ||
dfb4f309 | 342 | BUG_ON(slotid < 0 || slotid >= NFS4_MAX_SLOT_TABLE); |
e2c4ab3c AA |
343 | /* clear used bit in bitmap */ |
344 | __clear_bit(slotid, tbl->used_slots); | |
345 | ||
346 | /* update highest_used_slotid when it is freed */ | |
347 | if (slotid == tbl->highest_used_slotid) { | |
348 | slotid = find_last_bit(tbl->used_slots, tbl->max_slots); | |
bcb56164 | 349 | if (slotid < tbl->max_slots) |
e2c4ab3c AA |
350 | tbl->highest_used_slotid = slotid; |
351 | else | |
352 | tbl->highest_used_slotid = -1; | |
353 | } | |
e2c4ab3c AA |
354 | dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__, |
355 | free_slotid, tbl->highest_used_slotid); | |
356 | } | |
357 | ||
3bfb0fc5 | 358 | /* |
42acd021 | 359 | * Signal state manager thread if session fore channel is drained |
3bfb0fc5 | 360 | */ |
42acd021 | 361 | static void nfs4_check_drain_fc_complete(struct nfs4_session *ses) |
3bfb0fc5 | 362 | { |
689cf5c1 AB |
363 | struct rpc_task *task; |
364 | ||
a2118c33 | 365 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state)) { |
689cf5c1 AB |
366 | task = rpc_wake_up_next(&ses->fc_slot_table.slot_tbl_waitq); |
367 | if (task) | |
368 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
3bfb0fc5 AB |
369 | return; |
370 | } | |
371 | ||
372 | if (ses->fc_slot_table.highest_used_slotid != -1) | |
373 | return; | |
374 | ||
42acd021 AA |
375 | dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__); |
376 | complete(&ses->fc_slot_table.complete); | |
377 | } | |
378 | ||
379 | /* | |
380 | * Signal state manager thread if session back channel is drained | |
381 | */ | |
382 | void nfs4_check_drain_bc_complete(struct nfs4_session *ses) | |
383 | { | |
384 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state) || | |
385 | ses->bc_slot_table.highest_used_slotid != -1) | |
386 | return; | |
387 | dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__); | |
388 | complete(&ses->bc_slot_table.complete); | |
3bfb0fc5 AB |
389 | } |
390 | ||
d185a334 | 391 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 AA |
392 | { |
393 | struct nfs4_slot_table *tbl; | |
394 | ||
d185a334 | 395 | tbl = &res->sr_session->fc_slot_table; |
dfb4f309 | 396 | if (!res->sr_slot) { |
13615871 AA |
397 | /* just wake up the next guy waiting since |
398 | * we may have not consumed a slot after all */ | |
691daf3b | 399 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 400 | return; |
13615871 | 401 | } |
ea028ac9 | 402 | |
35dc1d74 | 403 | spin_lock(&tbl->slot_tbl_lock); |
dfb4f309 | 404 | nfs4_free_slot(tbl, res->sr_slot); |
42acd021 | 405 | nfs4_check_drain_fc_complete(res->sr_session); |
35dc1d74 | 406 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 407 | res->sr_slot = NULL; |
13615871 AA |
408 | } |
409 | ||
14516c3a | 410 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c AA |
411 | { |
412 | unsigned long timestamp; | |
14516c3a | 413 | struct nfs_client *clp; |
b0df806c AA |
414 | |
415 | /* | |
416 | * sr_status remains 1 if an RPC level error occurred. The server | |
417 | * may or may not have processed the sequence operation.. | |
418 | * Proceed as if the server received and processed the sequence | |
419 | * operation. | |
420 | */ | |
421 | if (res->sr_status == 1) | |
422 | res->sr_status = NFS_OK; | |
423 | ||
424 | /* -ERESTARTSYS can result in skipping nfs41_sequence_setup */ | |
dfb4f309 | 425 | if (!res->sr_slot) |
b0df806c AA |
426 | goto out; |
427 | ||
691daf3b | 428 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
429 | switch (res->sr_status) { |
430 | case 0: | |
b0df806c | 431 | /* Update the slot's sequence and clientid lease timer */ |
dfb4f309 | 432 | ++res->sr_slot->seq_nr; |
b0df806c | 433 | timestamp = res->sr_renewal_time; |
14516c3a | 434 | clp = res->sr_session->clp; |
452e9352 | 435 | do_renew_lease(clp, timestamp); |
0629e370 | 436 | /* Check sequence flags */ |
7135840f AB |
437 | if (atomic_read(&clp->cl_count) > 1) |
438 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
14516c3a TM |
439 | break; |
440 | case -NFS4ERR_DELAY: | |
441 | /* The server detected a resend of the RPC call and | |
442 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
443 | * of RFC5661. | |
444 | */ | |
12364a4f | 445 | dprintk("%s: slot=%td seq=%d: Operation in progress\n", |
dfb4f309 BH |
446 | __func__, |
447 | res->sr_slot - res->sr_session->fc_slot_table.slots, | |
448 | res->sr_slot->seq_nr); | |
14516c3a TM |
449 | goto out_retry; |
450 | default: | |
451 | /* Just update the slot sequence no. */ | |
dfb4f309 | 452 | ++res->sr_slot->seq_nr; |
b0df806c AA |
453 | } |
454 | out: | |
455 | /* The session may be reset by one of the error handlers. */ | |
456 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 457 | nfs41_sequence_free_slot(res); |
14516c3a TM |
458 | return 1; |
459 | out_retry: | |
d05dd4e9 | 460 | if (!rpc_restart_call(task)) |
14516c3a TM |
461 | goto out; |
462 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
463 | return 0; | |
b0df806c AA |
464 | } |
465 | ||
14516c3a TM |
466 | static int nfs4_sequence_done(struct rpc_task *task, |
467 | struct nfs4_sequence_res *res) | |
df896455 | 468 | { |
14516c3a TM |
469 | if (res->sr_session == NULL) |
470 | return 1; | |
471 | return nfs41_sequence_done(task, res); | |
df896455 TM |
472 | } |
473 | ||
510b8175 BH |
474 | /* |
475 | * nfs4_find_slot - efficiently look for a free slot | |
476 | * | |
477 | * nfs4_find_slot looks for an unset bit in the used_slots bitmap. | |
478 | * If found, we mark the slot as used, update the highest_used_slotid, | |
479 | * and respectively set up the sequence operation args. | |
480 | * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise. | |
fbcd4abc AA |
481 | * |
482 | * Note: must be called with under the slot_tbl_lock. | |
510b8175 BH |
483 | */ |
484 | static u8 | |
40ead580 | 485 | nfs4_find_slot(struct nfs4_slot_table *tbl) |
510b8175 BH |
486 | { |
487 | int slotid; | |
488 | u8 ret_id = NFS4_MAX_SLOT_TABLE; | |
489 | BUILD_BUG_ON((u8)NFS4_MAX_SLOT_TABLE != (int)NFS4_MAX_SLOT_TABLE); | |
490 | ||
510b8175 BH |
491 | dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n", |
492 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, | |
493 | tbl->max_slots); | |
494 | slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots); | |
495 | if (slotid >= tbl->max_slots) | |
496 | goto out; | |
497 | __set_bit(slotid, tbl->used_slots); | |
498 | if (slotid > tbl->highest_used_slotid) | |
499 | tbl->highest_used_slotid = slotid; | |
500 | ret_id = slotid; | |
501 | out: | |
502 | dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n", | |
503 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, ret_id); | |
510b8175 BH |
504 | return ret_id; |
505 | } | |
506 | ||
ce5039c1 AA |
507 | static int nfs41_setup_sequence(struct nfs4_session *session, |
508 | struct nfs4_sequence_args *args, | |
509 | struct nfs4_sequence_res *res, | |
510 | int cache_reply, | |
511 | struct rpc_task *task) | |
512 | { | |
fbcd4abc AA |
513 | struct nfs4_slot *slot; |
514 | struct nfs4_slot_table *tbl; | |
515 | u8 slotid; | |
516 | ||
517 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 518 | /* slot already allocated? */ |
dfb4f309 | 519 | if (res->sr_slot != NULL) |
ce5039c1 AA |
520 | return 0; |
521 | ||
fbcd4abc AA |
522 | tbl = &session->fc_slot_table; |
523 | ||
524 | spin_lock(&tbl->slot_tbl_lock); | |
a2118c33 | 525 | if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) && |
5601a00d | 526 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { |
ea028ac9 AA |
527 | /* |
528 | * The state manager will wait until the slot table is empty. | |
529 | * Schedule the reset thread | |
530 | */ | |
05f0d236 | 531 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
b069d94a | 532 | spin_unlock(&tbl->slot_tbl_lock); |
bcb56164 | 533 | dprintk("%s Schedule Session Reset\n", __func__); |
05f0d236 | 534 | return -EAGAIN; |
b069d94a AA |
535 | } |
536 | ||
689cf5c1 AB |
537 | if (!rpc_queue_empty(&tbl->slot_tbl_waitq) && |
538 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { | |
539 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
540 | spin_unlock(&tbl->slot_tbl_lock); | |
541 | dprintk("%s enforce FIFO order\n", __func__); | |
542 | return -EAGAIN; | |
543 | } | |
544 | ||
40ead580 | 545 | slotid = nfs4_find_slot(tbl); |
fbcd4abc AA |
546 | if (slotid == NFS4_MAX_SLOT_TABLE) { |
547 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
548 | spin_unlock(&tbl->slot_tbl_lock); | |
549 | dprintk("<-- %s: no free slots\n", __func__); | |
550 | return -EAGAIN; | |
551 | } | |
552 | spin_unlock(&tbl->slot_tbl_lock); | |
553 | ||
689cf5c1 | 554 | rpc_task_set_priority(task, RPC_PRIORITY_NORMAL); |
fbcd4abc | 555 | slot = tbl->slots + slotid; |
99fe60d0 | 556 | args->sa_session = session; |
fbcd4abc AA |
557 | args->sa_slotid = slotid; |
558 | args->sa_cache_this = cache_reply; | |
559 | ||
560 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr); | |
561 | ||
99fe60d0 | 562 | res->sr_session = session; |
dfb4f309 | 563 | res->sr_slot = slot; |
fbcd4abc | 564 | res->sr_renewal_time = jiffies; |
2a6e26cd | 565 | res->sr_status_flags = 0; |
fbcd4abc AA |
566 | /* |
567 | * sr_status is only set in decode_sequence, and so will remain | |
568 | * set to 1 if an rpc level failure occurs. | |
569 | */ | |
570 | res->sr_status = 1; | |
ce5039c1 AA |
571 | return 0; |
572 | } | |
573 | ||
035168ab | 574 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
575 | struct nfs4_sequence_args *args, |
576 | struct nfs4_sequence_res *res, | |
577 | int cache_reply, | |
578 | struct rpc_task *task) | |
579 | { | |
035168ab | 580 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
581 | int ret = 0; |
582 | ||
035168ab TM |
583 | if (session == NULL) { |
584 | args->sa_session = NULL; | |
585 | res->sr_session = NULL; | |
586 | goto out; | |
587 | } | |
588 | ||
12364a4f | 589 | dprintk("--> %s clp %p session %p sr_slot %td\n", |
dfb4f309 BH |
590 | __func__, session->clp, session, res->sr_slot ? |
591 | res->sr_slot - session->fc_slot_table.slots : -1); | |
ce5039c1 | 592 | |
035168ab | 593 | ret = nfs41_setup_sequence(session, args, res, cache_reply, |
ce5039c1 | 594 | task); |
ce5039c1 AA |
595 | out: |
596 | dprintk("<-- %s status=%d\n", __func__, ret); | |
597 | return ret; | |
598 | } | |
599 | ||
600 | struct nfs41_call_sync_data { | |
035168ab | 601 | const struct nfs_server *seq_server; |
ce5039c1 AA |
602 | struct nfs4_sequence_args *seq_args; |
603 | struct nfs4_sequence_res *seq_res; | |
604 | int cache_reply; | |
605 | }; | |
606 | ||
607 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
608 | { | |
609 | struct nfs41_call_sync_data *data = calldata; | |
610 | ||
035168ab TM |
611 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
612 | ||
613 | if (nfs4_setup_sequence(data->seq_server, data->seq_args, | |
ce5039c1 AA |
614 | data->seq_res, data->cache_reply, task)) |
615 | return; | |
616 | rpc_call_start(task); | |
617 | } | |
618 | ||
b257957e AB |
619 | static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata) |
620 | { | |
621 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
622 | nfs41_call_sync_prepare(task, calldata); | |
623 | } | |
624 | ||
69ab40c4 AA |
625 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
626 | { | |
627 | struct nfs41_call_sync_data *data = calldata; | |
628 | ||
14516c3a | 629 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
630 | } |
631 | ||
ce5039c1 AA |
632 | struct rpc_call_ops nfs41_call_sync_ops = { |
633 | .rpc_call_prepare = nfs41_call_sync_prepare, | |
69ab40c4 | 634 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
635 | }; |
636 | ||
b257957e AB |
637 | struct rpc_call_ops nfs41_call_priv_sync_ops = { |
638 | .rpc_call_prepare = nfs41_call_priv_sync_prepare, | |
639 | .rpc_call_done = nfs41_call_sync_done, | |
640 | }; | |
641 | ||
035168ab | 642 | static int nfs4_call_sync_sequence(struct nfs_server *server, |
ce5039c1 AA |
643 | struct rpc_message *msg, |
644 | struct nfs4_sequence_args *args, | |
645 | struct nfs4_sequence_res *res, | |
b257957e AB |
646 | int cache_reply, |
647 | int privileged) | |
ce5039c1 AA |
648 | { |
649 | int ret; | |
650 | struct rpc_task *task; | |
651 | struct nfs41_call_sync_data data = { | |
035168ab | 652 | .seq_server = server, |
ce5039c1 AA |
653 | .seq_args = args, |
654 | .seq_res = res, | |
655 | .cache_reply = cache_reply, | |
656 | }; | |
657 | struct rpc_task_setup task_setup = { | |
035168ab | 658 | .rpc_client = server->client, |
ce5039c1 AA |
659 | .rpc_message = msg, |
660 | .callback_ops = &nfs41_call_sync_ops, | |
661 | .callback_data = &data | |
662 | }; | |
663 | ||
dfb4f309 | 664 | res->sr_slot = NULL; |
b257957e AB |
665 | if (privileged) |
666 | task_setup.callback_ops = &nfs41_call_priv_sync_ops; | |
ce5039c1 AA |
667 | task = rpc_run_task(&task_setup); |
668 | if (IS_ERR(task)) | |
669 | ret = PTR_ERR(task); | |
670 | else { | |
671 | ret = task->tk_status; | |
672 | rpc_put_task(task); | |
673 | } | |
674 | return ret; | |
675 | } | |
676 | ||
cccef3b9 AA |
677 | int _nfs4_call_sync_session(struct nfs_server *server, |
678 | struct rpc_message *msg, | |
679 | struct nfs4_sequence_args *args, | |
680 | struct nfs4_sequence_res *res, | |
681 | int cache_reply) | |
682 | { | |
035168ab | 683 | return nfs4_call_sync_sequence(server, msg, args, res, cache_reply, 0); |
cccef3b9 AA |
684 | } |
685 | ||
df896455 | 686 | #else |
14516c3a TM |
687 | static int nfs4_sequence_done(struct rpc_task *task, |
688 | struct nfs4_sequence_res *res) | |
df896455 | 689 | { |
14516c3a | 690 | return 1; |
df896455 | 691 | } |
cccef3b9 AA |
692 | #endif /* CONFIG_NFS_V4_1 */ |
693 | ||
694 | int _nfs4_call_sync(struct nfs_server *server, | |
695 | struct rpc_message *msg, | |
696 | struct nfs4_sequence_args *args, | |
697 | struct nfs4_sequence_res *res, | |
698 | int cache_reply) | |
699 | { | |
f3752975 | 700 | args->sa_session = res->sr_session = NULL; |
cccef3b9 AA |
701 | return rpc_call_sync(server->client, msg, 0); |
702 | } | |
703 | ||
704 | #define nfs4_call_sync(server, msg, args, res, cache_reply) \ | |
97dc1359 | 705 | (server)->nfs_client->cl_mvops->call_sync((server), (msg), &(args)->seq_args, \ |
cccef3b9 AA |
706 | &(res)->seq_res, (cache_reply)) |
707 | ||
38478b24 | 708 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 709 | { |
38478b24 | 710 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 711 | |
38478b24 | 712 | spin_lock(&dir->i_lock); |
40d24704 TM |
713 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; |
714 | if (!cinfo->atomic || cinfo->before != nfsi->change_attr) | |
bfc69a45 | 715 | nfs_force_lookup_revalidate(dir); |
40d24704 | 716 | nfsi->change_attr = cinfo->after; |
38478b24 | 717 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
718 | } |
719 | ||
e56e0b78 | 720 | struct nfs4_opendata { |
c6d00e63 | 721 | struct kref kref; |
e56e0b78 TM |
722 | struct nfs_openargs o_arg; |
723 | struct nfs_openres o_res; | |
cdd4e68b TM |
724 | struct nfs_open_confirmargs c_arg; |
725 | struct nfs_open_confirmres c_res; | |
e56e0b78 TM |
726 | struct nfs_fattr f_attr; |
727 | struct nfs_fattr dir_attr; | |
ad389da7 | 728 | struct path path; |
e56e0b78 TM |
729 | struct dentry *dir; |
730 | struct nfs4_state_owner *owner; | |
aac00a8d | 731 | struct nfs4_state *state; |
e56e0b78 | 732 | struct iattr attrs; |
26e976a8 | 733 | unsigned long timestamp; |
3e309914 | 734 | unsigned int rpc_done : 1; |
24ac23ab TM |
735 | int rpc_status; |
736 | int cancelled; | |
e56e0b78 TM |
737 | }; |
738 | ||
2ced46c2 TM |
739 | |
740 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
741 | { | |
742 | p->o_res.f_attr = &p->f_attr; | |
743 | p->o_res.dir_attr = &p->dir_attr; | |
c1d51931 TM |
744 | p->o_res.seqid = p->o_arg.seqid; |
745 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 TM |
746 | p->o_res.server = p->o_arg.server; |
747 | nfs_fattr_init(&p->f_attr); | |
748 | nfs_fattr_init(&p->dir_attr); | |
749 | } | |
750 | ||
ad389da7 | 751 | static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path, |
dc0b027d | 752 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be TM |
753 | const struct iattr *attrs, |
754 | gfp_t gfp_mask) | |
e56e0b78 | 755 | { |
ad389da7 | 756 | struct dentry *parent = dget_parent(path->dentry); |
e56e0b78 TM |
757 | struct inode *dir = parent->d_inode; |
758 | struct nfs_server *server = NFS_SERVER(dir); | |
759 | struct nfs4_opendata *p; | |
760 | ||
8535b2be | 761 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
762 | if (p == NULL) |
763 | goto err; | |
8535b2be | 764 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
765 | if (p->o_arg.seqid == NULL) |
766 | goto err_free; | |
f6948697 AV |
767 | path_get(path); |
768 | p->path = *path; | |
e56e0b78 TM |
769 | p->dir = parent; |
770 | p->owner = sp; | |
771 | atomic_inc(&sp->so_count); | |
772 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
773 | p->o_arg.open_flags = flags; |
774 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
7539bbab | 775 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 776 | p->o_arg.id = sp->so_owner_id.id; |
ad389da7 | 777 | p->o_arg.name = &p->path.dentry->d_name; |
e56e0b78 TM |
778 | p->o_arg.server = server; |
779 | p->o_arg.bitmask = server->attr_bitmask; | |
780 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; | |
d77d76ff TM |
781 | if (flags & O_CREAT) { |
782 | u32 *s; | |
783 | ||
e56e0b78 TM |
784 | p->o_arg.u.attrs = &p->attrs; |
785 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
d77d76ff TM |
786 | s = (u32 *) p->o_arg.u.verifier.data; |
787 | s[0] = jiffies; | |
788 | s[1] = current->pid; | |
e56e0b78 | 789 | } |
cdd4e68b TM |
790 | p->c_arg.fh = &p->o_res.fh; |
791 | p->c_arg.stateid = &p->o_res.stateid; | |
792 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 793 | nfs4_init_opendata_res(p); |
c6d00e63 | 794 | kref_init(&p->kref); |
e56e0b78 TM |
795 | return p; |
796 | err_free: | |
797 | kfree(p); | |
798 | err: | |
799 | dput(parent); | |
800 | return NULL; | |
801 | } | |
802 | ||
c6d00e63 | 803 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 804 | { |
c6d00e63 TM |
805 | struct nfs4_opendata *p = container_of(kref, |
806 | struct nfs4_opendata, kref); | |
807 | ||
808 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
809 | if (p->state != NULL) |
810 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
811 | nfs4_put_state_owner(p->owner); |
812 | dput(p->dir); | |
31f31db1 | 813 | path_put(&p->path); |
c6d00e63 TM |
814 | kfree(p); |
815 | } | |
816 | ||
817 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
818 | { | |
819 | if (p != NULL) | |
820 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
821 | } |
822 | ||
06f814a3 TM |
823 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
824 | { | |
06f814a3 TM |
825 | int ret; |
826 | ||
06f814a3 | 827 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
828 | return ret; |
829 | } | |
830 | ||
dc0b027d | 831 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
832 | { |
833 | int ret = 0; | |
dc0b027d TM |
834 | |
835 | if (open_mode & O_EXCL) | |
836 | goto out; | |
837 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 838 | case FMODE_READ: |
88069f77 TM |
839 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
840 | && state->n_rdonly != 0; | |
6ee41268 TM |
841 | break; |
842 | case FMODE_WRITE: | |
88069f77 TM |
843 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
844 | && state->n_wronly != 0; | |
6ee41268 TM |
845 | break; |
846 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
847 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
848 | && state->n_rdwr != 0; | |
6ee41268 | 849 | } |
dc0b027d | 850 | out: |
6ee41268 TM |
851 | return ret; |
852 | } | |
853 | ||
dc0b027d | 854 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 855 | { |
dc0b027d | 856 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 857 | return 0; |
15c831bf | 858 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 859 | return 0; |
b7391f44 | 860 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
861 | return 1; |
862 | } | |
863 | ||
dc0b027d | 864 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 865 | { |
dc0b027d | 866 | switch (fmode) { |
e7616923 TM |
867 | case FMODE_WRITE: |
868 | state->n_wronly++; | |
869 | break; | |
870 | case FMODE_READ: | |
871 | state->n_rdonly++; | |
872 | break; | |
873 | case FMODE_READ|FMODE_WRITE: | |
874 | state->n_rdwr++; | |
875 | } | |
dc0b027d | 876 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
877 | } |
878 | ||
dc0b027d | 879 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
880 | { |
881 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
882 | memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data)); | |
883 | memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data)); | |
dc0b027d | 884 | switch (fmode) { |
003707c7 TM |
885 | case FMODE_READ: |
886 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
887 | break; | |
888 | case FMODE_WRITE: | |
889 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
890 | break; | |
891 | case FMODE_READ|FMODE_WRITE: | |
892 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
893 | } | |
e7616923 TM |
894 | } |
895 | ||
dc0b027d | 896 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 897 | { |
8bda4e4c | 898 | write_seqlock(&state->seqlock); |
dc0b027d | 899 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 900 | write_sequnlock(&state->seqlock); |
003707c7 TM |
901 | } |
902 | ||
dc0b027d | 903 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 904 | { |
8bda4e4c TM |
905 | /* |
906 | * Protect the call to nfs4_state_set_mode_locked and | |
907 | * serialise the stateid update | |
908 | */ | |
909 | write_seqlock(&state->seqlock); | |
003707c7 TM |
910 | if (deleg_stateid != NULL) { |
911 | memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data)); | |
912 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
913 | } | |
914 | if (open_stateid != NULL) | |
dc0b027d | 915 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
916 | write_sequnlock(&state->seqlock); |
917 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 918 | update_open_stateflags(state, fmode); |
ec073428 | 919 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
920 | } |
921 | ||
dc0b027d | 922 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
923 | { |
924 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
925 | struct nfs_delegation *deleg_cur; | |
926 | int ret = 0; | |
927 | ||
dc0b027d | 928 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
929 | |
930 | rcu_read_lock(); | |
931 | deleg_cur = rcu_dereference(nfsi->delegation); | |
932 | if (deleg_cur == NULL) | |
933 | goto no_delegation; | |
934 | ||
935 | spin_lock(&deleg_cur->lock); | |
936 | if (nfsi->delegation != deleg_cur || | |
dc0b027d | 937 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
938 | goto no_delegation_unlock; |
939 | ||
940 | if (delegation == NULL) | |
941 | delegation = &deleg_cur->stateid; | |
942 | else if (memcmp(deleg_cur->stateid.data, delegation->data, NFS4_STATEID_SIZE) != 0) | |
943 | goto no_delegation_unlock; | |
944 | ||
b7391f44 | 945 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 946 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
947 | ret = 1; |
948 | no_delegation_unlock: | |
949 | spin_unlock(&deleg_cur->lock); | |
950 | no_delegation: | |
951 | rcu_read_unlock(); | |
952 | ||
953 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 954 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
955 | ret = 1; |
956 | } | |
957 | ||
958 | return ret; | |
959 | } | |
960 | ||
961 | ||
dc0b027d | 962 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
963 | { |
964 | struct nfs_delegation *delegation; | |
965 | ||
966 | rcu_read_lock(); | |
967 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 968 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
969 | rcu_read_unlock(); |
970 | return; | |
971 | } | |
972 | rcu_read_unlock(); | |
973 | nfs_inode_return_delegation(inode); | |
974 | } | |
975 | ||
6ee41268 | 976 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
977 | { |
978 | struct nfs4_state *state = opendata->state; | |
979 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
980 | struct nfs_delegation *delegation; | |
dc0b027d TM |
981 | int open_mode = opendata->o_arg.open_flags & O_EXCL; |
982 | fmode_t fmode = opendata->o_arg.fmode; | |
aac00a8d TM |
983 | nfs4_stateid stateid; |
984 | int ret = -EAGAIN; | |
985 | ||
aac00a8d | 986 | for (;;) { |
dc0b027d | 987 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 988 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
989 | if (can_open_cached(state, fmode, open_mode)) { |
990 | update_open_stateflags(state, fmode); | |
6ee41268 | 991 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
992 | goto out_return_state; |
993 | } | |
994 | spin_unlock(&state->owner->so_lock); | |
995 | } | |
34310430 TM |
996 | rcu_read_lock(); |
997 | delegation = rcu_dereference(nfsi->delegation); | |
998 | if (delegation == NULL || | |
dc0b027d | 999 | !can_open_delegated(delegation, fmode)) { |
34310430 | 1000 | rcu_read_unlock(); |
aac00a8d | 1001 | break; |
34310430 | 1002 | } |
aac00a8d TM |
1003 | /* Save the delegation */ |
1004 | memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data)); | |
1005 | rcu_read_unlock(); | |
af22f94a | 1006 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
1007 | if (ret != 0) |
1008 | goto out; | |
1009 | ret = -EAGAIN; | |
34310430 TM |
1010 | |
1011 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1012 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1013 | goto out_return_state; |
aac00a8d | 1014 | } |
aac00a8d TM |
1015 | out: |
1016 | return ERR_PTR(ret); | |
1017 | out_return_state: | |
1018 | atomic_inc(&state->count); | |
1019 | return state; | |
1020 | } | |
1021 | ||
24ac23ab TM |
1022 | static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) |
1023 | { | |
1024 | struct inode *inode; | |
1025 | struct nfs4_state *state = NULL; | |
003707c7 | 1026 | struct nfs_delegation *delegation; |
1b370bc2 | 1027 | int ret; |
24ac23ab | 1028 | |
aac00a8d | 1029 | if (!data->rpc_done) { |
6ee41268 | 1030 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1031 | goto out; |
1032 | } | |
1033 | ||
1b370bc2 | 1034 | ret = -EAGAIN; |
24ac23ab | 1035 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1036 | goto err; |
24ac23ab | 1037 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 1038 | ret = PTR_ERR(inode); |
03f28e3a | 1039 | if (IS_ERR(inode)) |
1b370bc2 TM |
1040 | goto err; |
1041 | ret = -ENOMEM; | |
24ac23ab TM |
1042 | state = nfs4_get_open_state(inode, data->owner); |
1043 | if (state == NULL) | |
1b370bc2 | 1044 | goto err_put_inode; |
549d6ed5 | 1045 | if (data->o_res.delegation_type != 0) { |
549d6ed5 TM |
1046 | int delegation_flags = 0; |
1047 | ||
003707c7 TM |
1048 | rcu_read_lock(); |
1049 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
1050 | if (delegation) | |
1051 | delegation_flags = delegation->flags; | |
1052 | rcu_read_unlock(); | |
15c831bf | 1053 | if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) |
549d6ed5 TM |
1054 | nfs_inode_set_delegation(state->inode, |
1055 | data->owner->so_cred, | |
1056 | &data->o_res); | |
1057 | else | |
1058 | nfs_inode_reclaim_delegation(state->inode, | |
1059 | data->owner->so_cred, | |
1060 | &data->o_res); | |
1061 | } | |
34310430 TM |
1062 | |
1063 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
dc0b027d | 1064 | data->o_arg.fmode); |
24ac23ab | 1065 | iput(inode); |
aac00a8d | 1066 | out: |
24ac23ab | 1067 | return state; |
1b370bc2 TM |
1068 | err_put_inode: |
1069 | iput(inode); | |
1070 | err: | |
1071 | return ERR_PTR(ret); | |
24ac23ab TM |
1072 | } |
1073 | ||
864472e9 TM |
1074 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1075 | { | |
1076 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1077 | struct nfs_open_context *ctx; | |
1078 | ||
1079 | spin_lock(&state->inode->i_lock); | |
1080 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1081 | if (ctx->state != state) | |
1082 | continue; | |
1083 | get_nfs_open_context(ctx); | |
1084 | spin_unlock(&state->inode->i_lock); | |
1085 | return ctx; | |
1086 | } | |
1087 | spin_unlock(&state->inode->i_lock); | |
1088 | return ERR_PTR(-ENOENT); | |
1089 | } | |
1090 | ||
6f220ed5 TM |
1091 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
1092 | { | |
1093 | struct nfs4_opendata *opendata; | |
1094 | ||
8535b2be | 1095 | opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL, GFP_NOFS); |
6f220ed5 TM |
1096 | if (opendata == NULL) |
1097 | return ERR_PTR(-ENOMEM); | |
1098 | opendata->state = state; | |
1099 | atomic_inc(&state->count); | |
1100 | return opendata; | |
1101 | } | |
1102 | ||
dc0b027d | 1103 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1104 | { |
2ced46c2 | 1105 | struct nfs4_state *newstate; |
864472e9 TM |
1106 | int ret; |
1107 | ||
dc0b027d TM |
1108 | opendata->o_arg.open_flags = 0; |
1109 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1110 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1111 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1112 | nfs4_init_opendata_res(opendata); | |
b257957e | 1113 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1114 | if (ret != 0) |
1115 | return ret; | |
2ced46c2 | 1116 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1117 | if (IS_ERR(newstate)) |
1118 | return PTR_ERR(newstate); | |
dc0b027d | 1119 | nfs4_close_state(&opendata->path, newstate, fmode); |
2ced46c2 | 1120 | *res = newstate; |
864472e9 TM |
1121 | return 0; |
1122 | } | |
1123 | ||
1124 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1125 | { | |
864472e9 | 1126 | struct nfs4_state *newstate; |
864472e9 TM |
1127 | int ret; |
1128 | ||
1129 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1130 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1131 | smp_rmb(); |
1132 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1133 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1134 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1135 | if (ret != 0) |
1136 | return ret; | |
2ced46c2 TM |
1137 | if (newstate != state) |
1138 | return -ESTALE; | |
864472e9 TM |
1139 | } |
1140 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1141 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1142 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1143 | if (ret != 0) |
1144 | return ret; | |
2ced46c2 TM |
1145 | if (newstate != state) |
1146 | return -ESTALE; | |
864472e9 TM |
1147 | } |
1148 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1149 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1150 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1151 | if (ret != 0) |
1152 | return ret; | |
2ced46c2 TM |
1153 | if (newstate != state) |
1154 | return -ESTALE; | |
864472e9 | 1155 | } |
1ac7e2fd TM |
1156 | /* |
1157 | * We may have performed cached opens for all three recoveries. | |
1158 | * Check if we need to update the current stateid. | |
1159 | */ | |
1160 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
1161 | memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) { | |
8bda4e4c | 1162 | write_seqlock(&state->seqlock); |
1ac7e2fd TM |
1163 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
1164 | memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)); | |
8bda4e4c | 1165 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1166 | } |
864472e9 TM |
1167 | return 0; |
1168 | } | |
1169 | ||
1da177e4 LT |
1170 | /* |
1171 | * OPEN_RECLAIM: | |
1172 | * reclaim state on the server after a reboot. | |
1da177e4 | 1173 | */ |
539cd03a | 1174 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1175 | { |
1ac7e2fd | 1176 | struct nfs_delegation *delegation; |
864472e9 | 1177 | struct nfs4_opendata *opendata; |
dc0b027d | 1178 | fmode_t delegation_type = 0; |
1da177e4 LT |
1179 | int status; |
1180 | ||
6f220ed5 TM |
1181 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1182 | if (IS_ERR(opendata)) | |
1183 | return PTR_ERR(opendata); | |
864472e9 TM |
1184 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1185 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1186 | rcu_read_lock(); |
1187 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1188 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1189 | delegation_type = delegation->type; |
1ac7e2fd | 1190 | rcu_read_unlock(); |
864472e9 TM |
1191 | opendata->o_arg.u.delegation_type = delegation_type; |
1192 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1193 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1194 | return status; |
1195 | } | |
1196 | ||
539cd03a | 1197 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1198 | { |
1199 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1200 | struct nfs4_exception exception = { }; | |
1201 | int err; | |
1202 | do { | |
539cd03a | 1203 | err = _nfs4_do_open_reclaim(ctx, state); |
168667c4 | 1204 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1205 | break; |
1206 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1207 | } while (exception.retry); |
1208 | return err; | |
1209 | } | |
1210 | ||
864472e9 TM |
1211 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1212 | { | |
1213 | struct nfs_open_context *ctx; | |
1214 | int ret; | |
1215 | ||
1216 | ctx = nfs4_state_find_open_context(state); | |
1217 | if (IS_ERR(ctx)) | |
1218 | return PTR_ERR(ctx); | |
539cd03a | 1219 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1220 | put_nfs_open_context(ctx); |
1221 | return ret; | |
1222 | } | |
1223 | ||
13437e12 | 1224 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1225 | { |
e56e0b78 | 1226 | struct nfs4_opendata *opendata; |
864472e9 | 1227 | int ret; |
1da177e4 | 1228 | |
6f220ed5 TM |
1229 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1230 | if (IS_ERR(opendata)) | |
1231 | return PTR_ERR(opendata); | |
e56e0b78 | 1232 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
13437e12 | 1233 | memcpy(opendata->o_arg.u.delegation.data, stateid->data, |
e56e0b78 | 1234 | sizeof(opendata->o_arg.u.delegation.data)); |
864472e9 | 1235 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1236 | nfs4_opendata_put(opendata); |
864472e9 | 1237 | return ret; |
1da177e4 LT |
1238 | } |
1239 | ||
13437e12 | 1240 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1241 | { |
1242 | struct nfs4_exception exception = { }; | |
539cd03a | 1243 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1244 | int err; |
1245 | do { | |
13437e12 | 1246 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1247 | switch (err) { |
1248 | case 0: | |
965b5d67 TM |
1249 | case -ENOENT: |
1250 | case -ESTALE: | |
1251 | goto out; | |
bcfa49f6 RL |
1252 | case -NFS4ERR_BADSESSION: |
1253 | case -NFS4ERR_BADSLOT: | |
1254 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1255 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1256 | case -NFS4ERR_DEADSESSION: | |
1257 | nfs4_schedule_state_recovery( | |
1258 | server->nfs_client); | |
1259 | goto out; | |
1da177e4 LT |
1260 | case -NFS4ERR_STALE_CLIENTID: |
1261 | case -NFS4ERR_STALE_STATEID: | |
1262 | case -NFS4ERR_EXPIRED: | |
1263 | /* Don't recall a delegation if it was lost */ | |
7539bbab | 1264 | nfs4_schedule_state_recovery(server->nfs_client); |
965b5d67 TM |
1265 | goto out; |
1266 | case -ERESTARTSYS: | |
1267 | /* | |
1268 | * The show must go on: exit, but mark the | |
1269 | * stateid as needing recovery. | |
1270 | */ | |
1271 | case -NFS4ERR_ADMIN_REVOKED: | |
1272 | case -NFS4ERR_BAD_STATEID: | |
1273 | nfs4_state_mark_reclaim_nograce(server->nfs_client, state); | |
168667c4 TM |
1274 | case -EKEYEXPIRED: |
1275 | /* | |
1276 | * User RPCSEC_GSS context has expired. | |
1277 | * We cannot recover this stateid now, so | |
1278 | * skip it and allow recovery thread to | |
1279 | * proceed. | |
1280 | */ | |
965b5d67 TM |
1281 | case -ENOMEM: |
1282 | err = 0; | |
1283 | goto out; | |
1da177e4 LT |
1284 | } |
1285 | err = nfs4_handle_exception(server, err, &exception); | |
1286 | } while (exception.retry); | |
965b5d67 | 1287 | out: |
1da177e4 LT |
1288 | return err; |
1289 | } | |
1290 | ||
cdd4e68b TM |
1291 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1292 | { | |
1293 | struct nfs4_opendata *data = calldata; | |
1294 | ||
1295 | data->rpc_status = task->tk_status; | |
26e976a8 | 1296 | if (data->rpc_status == 0) { |
cdd4e68b TM |
1297 | memcpy(data->o_res.stateid.data, data->c_res.stateid.data, |
1298 | sizeof(data->o_res.stateid.data)); | |
bb22629e | 1299 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1300 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1301 | data->rpc_done = 1; |
26e976a8 | 1302 | } |
cdd4e68b TM |
1303 | } |
1304 | ||
1305 | static void nfs4_open_confirm_release(void *calldata) | |
1306 | { | |
1307 | struct nfs4_opendata *data = calldata; | |
1308 | struct nfs4_state *state = NULL; | |
1309 | ||
1310 | /* If this request hasn't been cancelled, do nothing */ | |
1311 | if (data->cancelled == 0) | |
1312 | goto out_free; | |
1313 | /* In case of error, no cleanup! */ | |
3e309914 | 1314 | if (!data->rpc_done) |
cdd4e68b | 1315 | goto out_free; |
cdd4e68b | 1316 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1317 | if (!IS_ERR(state)) |
dc0b027d | 1318 | nfs4_close_state(&data->path, state, data->o_arg.fmode); |
cdd4e68b | 1319 | out_free: |
c6d00e63 | 1320 | nfs4_opendata_put(data); |
cdd4e68b TM |
1321 | } |
1322 | ||
1323 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1324 | .rpc_call_done = nfs4_open_confirm_done, |
1325 | .rpc_release = nfs4_open_confirm_release, | |
1326 | }; | |
1327 | ||
1328 | /* | |
1329 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1330 | */ | |
1331 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1332 | { | |
1333 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1334 | struct rpc_task *task; | |
5138fde0 TM |
1335 | struct rpc_message msg = { |
1336 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1337 | .rpc_argp = &data->c_arg, | |
1338 | .rpc_resp = &data->c_res, | |
1339 | .rpc_cred = data->owner->so_cred, | |
1340 | }; | |
c970aa85 TM |
1341 | struct rpc_task_setup task_setup_data = { |
1342 | .rpc_client = server->client, | |
5138fde0 | 1343 | .rpc_message = &msg, |
c970aa85 TM |
1344 | .callback_ops = &nfs4_open_confirm_ops, |
1345 | .callback_data = data, | |
101070ca | 1346 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1347 | .flags = RPC_TASK_ASYNC, |
1348 | }; | |
1da177e4 LT |
1349 | int status; |
1350 | ||
c6d00e63 | 1351 | kref_get(&data->kref); |
3e309914 TM |
1352 | data->rpc_done = 0; |
1353 | data->rpc_status = 0; | |
5138fde0 | 1354 | data->timestamp = jiffies; |
c970aa85 | 1355 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1356 | if (IS_ERR(task)) |
cdd4e68b | 1357 | return PTR_ERR(task); |
cdd4e68b TM |
1358 | status = nfs4_wait_for_completion_rpc_task(task); |
1359 | if (status != 0) { | |
1360 | data->cancelled = 1; | |
1361 | smp_wmb(); | |
1362 | } else | |
1363 | status = data->rpc_status; | |
e6b3c4db | 1364 | rpc_put_task(task); |
1da177e4 LT |
1365 | return status; |
1366 | } | |
1367 | ||
24ac23ab | 1368 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1369 | { |
24ac23ab TM |
1370 | struct nfs4_opendata *data = calldata; |
1371 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1372 | |
24ac23ab TM |
1373 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
1374 | return; | |
aac00a8d TM |
1375 | /* |
1376 | * Check if we still need to send an OPEN call, or if we can use | |
1377 | * a delegation instead. | |
1378 | */ | |
1379 | if (data->state != NULL) { | |
1380 | struct nfs_delegation *delegation; | |
1381 | ||
dc0b027d | 1382 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1383 | goto out_no_action; |
aac00a8d TM |
1384 | rcu_read_lock(); |
1385 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
1386 | if (delegation != NULL && | |
15c831bf | 1387 | test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) == 0) { |
aac00a8d | 1388 | rcu_read_unlock(); |
6ee41268 | 1389 | goto out_no_action; |
aac00a8d TM |
1390 | } |
1391 | rcu_read_unlock(); | |
1392 | } | |
24ac23ab | 1393 | /* Update sequence id. */ |
9f958ab8 | 1394 | data->o_arg.id = sp->so_owner_id.id; |
1f0e890d | 1395 | data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; |
6f220ed5 | 1396 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1397 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
6f220ed5 TM |
1398 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1399 | } | |
26e976a8 | 1400 | data->timestamp = jiffies; |
035168ab | 1401 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c AA |
1402 | &data->o_arg.seq_args, |
1403 | &data->o_res.seq_res, 1, task)) | |
1404 | return; | |
5138fde0 | 1405 | rpc_call_start(task); |
6ee41268 TM |
1406 | return; |
1407 | out_no_action: | |
1408 | task->tk_action = NULL; | |
1409 | ||
24ac23ab | 1410 | } |
1da177e4 | 1411 | |
b257957e AB |
1412 | static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata) |
1413 | { | |
1414 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
1415 | nfs4_open_prepare(task, calldata); | |
1416 | } | |
1417 | ||
24ac23ab TM |
1418 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1419 | { | |
1420 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1421 | |
24ac23ab | 1422 | data->rpc_status = task->tk_status; |
d898528c | 1423 | |
14516c3a TM |
1424 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1425 | return; | |
d898528c | 1426 | |
24ac23ab TM |
1427 | if (task->tk_status == 0) { |
1428 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1429 | case S_IFREG: |
1430 | break; | |
1431 | case S_IFLNK: | |
24ac23ab | 1432 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1433 | break; |
1434 | case S_IFDIR: | |
24ac23ab | 1435 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1436 | break; |
1437 | default: | |
24ac23ab | 1438 | data->rpc_status = -ENOTDIR; |
6f926b5b | 1439 | } |
26e976a8 | 1440 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1441 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1442 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1443 | } |
3e309914 | 1444 | data->rpc_done = 1; |
24ac23ab | 1445 | } |
6f926b5b | 1446 | |
24ac23ab TM |
1447 | static void nfs4_open_release(void *calldata) |
1448 | { | |
1449 | struct nfs4_opendata *data = calldata; | |
1450 | struct nfs4_state *state = NULL; | |
1451 | ||
1452 | /* If this request hasn't been cancelled, do nothing */ | |
1453 | if (data->cancelled == 0) | |
1454 | goto out_free; | |
1455 | /* In case of error, no cleanup! */ | |
3e309914 | 1456 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1457 | goto out_free; |
1458 | /* In case we need an open_confirm, no cleanup! */ | |
1459 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1460 | goto out_free; | |
24ac23ab | 1461 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1462 | if (!IS_ERR(state)) |
dc0b027d | 1463 | nfs4_close_state(&data->path, state, data->o_arg.fmode); |
24ac23ab | 1464 | out_free: |
c6d00e63 | 1465 | nfs4_opendata_put(data); |
24ac23ab TM |
1466 | } |
1467 | ||
1468 | static const struct rpc_call_ops nfs4_open_ops = { | |
1469 | .rpc_call_prepare = nfs4_open_prepare, | |
1470 | .rpc_call_done = nfs4_open_done, | |
1471 | .rpc_release = nfs4_open_release, | |
1472 | }; | |
1473 | ||
b257957e AB |
1474 | static const struct rpc_call_ops nfs4_recover_open_ops = { |
1475 | .rpc_call_prepare = nfs4_recover_open_prepare, | |
1476 | .rpc_call_done = nfs4_open_done, | |
1477 | .rpc_release = nfs4_open_release, | |
1478 | }; | |
1479 | ||
1480 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) | |
24ac23ab TM |
1481 | { |
1482 | struct inode *dir = data->dir->d_inode; | |
1483 | struct nfs_server *server = NFS_SERVER(dir); | |
1484 | struct nfs_openargs *o_arg = &data->o_arg; | |
1485 | struct nfs_openres *o_res = &data->o_res; | |
1486 | struct rpc_task *task; | |
5138fde0 TM |
1487 | struct rpc_message msg = { |
1488 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1489 | .rpc_argp = o_arg, | |
1490 | .rpc_resp = o_res, | |
1491 | .rpc_cred = data->owner->so_cred, | |
1492 | }; | |
c970aa85 TM |
1493 | struct rpc_task_setup task_setup_data = { |
1494 | .rpc_client = server->client, | |
5138fde0 | 1495 | .rpc_message = &msg, |
c970aa85 TM |
1496 | .callback_ops = &nfs4_open_ops, |
1497 | .callback_data = data, | |
101070ca | 1498 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1499 | .flags = RPC_TASK_ASYNC, |
1500 | }; | |
24ac23ab TM |
1501 | int status; |
1502 | ||
c6d00e63 | 1503 | kref_get(&data->kref); |
3e309914 TM |
1504 | data->rpc_done = 0; |
1505 | data->rpc_status = 0; | |
2ced46c2 | 1506 | data->cancelled = 0; |
b257957e AB |
1507 | if (isrecover) |
1508 | task_setup_data.callback_ops = &nfs4_recover_open_ops; | |
c970aa85 | 1509 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1510 | if (IS_ERR(task)) |
1511 | return PTR_ERR(task); | |
1512 | status = nfs4_wait_for_completion_rpc_task(task); | |
1513 | if (status != 0) { | |
1514 | data->cancelled = 1; | |
1515 | smp_wmb(); | |
1516 | } else | |
1517 | status = data->rpc_status; | |
1518 | rpc_put_task(task); | |
1519 | ||
1520 | return status; | |
1521 | } | |
1522 | ||
1523 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1524 | { | |
1525 | struct inode *dir = data->dir->d_inode; | |
1526 | struct nfs_openres *o_res = &data->o_res; | |
1527 | int status; | |
1528 | ||
1529 | status = nfs4_run_open_task(data, 1); | |
1530 | if (status != 0 || !data->rpc_done) | |
1531 | return status; | |
1532 | ||
1533 | nfs_refresh_inode(dir, o_res->dir_attr); | |
1534 | ||
1535 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { | |
1536 | status = _nfs4_proc_open_confirm(data); | |
1537 | if (status != 0) | |
1538 | return status; | |
1539 | } | |
1540 | ||
1541 | return status; | |
1542 | } | |
1543 | ||
1544 | /* | |
1545 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1546 | */ | |
1547 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1548 | { | |
1549 | struct inode *dir = data->dir->d_inode; | |
1550 | struct nfs_server *server = NFS_SERVER(dir); | |
1551 | struct nfs_openargs *o_arg = &data->o_arg; | |
1552 | struct nfs_openres *o_res = &data->o_res; | |
1553 | int status; | |
1554 | ||
1555 | status = nfs4_run_open_task(data, 0); | |
3e309914 | 1556 | if (status != 0 || !data->rpc_done) |
24ac23ab TM |
1557 | return status; |
1558 | ||
56ae19f3 TM |
1559 | if (o_arg->open_flags & O_CREAT) { |
1560 | update_changeattr(dir, &o_res->cinfo); | |
1561 | nfs_post_op_update_inode(dir, o_res->dir_attr); | |
1562 | } else | |
1563 | nfs_refresh_inode(dir, o_res->dir_attr); | |
0df5dd4a TM |
1564 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1565 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1566 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1567 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1568 | if (status != 0) |
24ac23ab | 1569 | return status; |
1da177e4 LT |
1570 | } |
1571 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1572 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1573 | return 0; |
1da177e4 LT |
1574 | } |
1575 | ||
10afec90 | 1576 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
58d9714a | 1577 | { |
7539bbab | 1578 | struct nfs_client *clp = server->nfs_client; |
a78cb57a | 1579 | unsigned int loop; |
6b30954e | 1580 | int ret; |
58d9714a | 1581 | |
a78cb57a | 1582 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { |
65de872e | 1583 | ret = nfs4_wait_clnt_recover(clp); |
6b30954e | 1584 | if (ret != 0) |
a78cb57a | 1585 | break; |
e598d843 TM |
1586 | if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) && |
1587 | !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state)) | |
6b30954e | 1588 | break; |
58d9714a | 1589 | nfs4_schedule_state_recovery(clp); |
a78cb57a | 1590 | ret = -EIO; |
6b30954e | 1591 | } |
a78cb57a | 1592 | return ret; |
58d9714a TM |
1593 | } |
1594 | ||
1da177e4 LT |
1595 | /* |
1596 | * OPEN_EXPIRED: | |
1597 | * reclaim state on the server after a network partition. | |
1598 | * Assumes caller holds the appropriate lock | |
1599 | */ | |
539cd03a | 1600 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1601 | { |
e56e0b78 | 1602 | struct nfs4_opendata *opendata; |
864472e9 | 1603 | int ret; |
1da177e4 | 1604 | |
6f220ed5 TM |
1605 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1606 | if (IS_ERR(opendata)) | |
1607 | return PTR_ERR(opendata); | |
864472e9 | 1608 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1609 | if (ret == -ESTALE) |
539cd03a | 1610 | d_drop(ctx->path.dentry); |
c6d00e63 | 1611 | nfs4_opendata_put(opendata); |
864472e9 | 1612 | return ret; |
1da177e4 LT |
1613 | } |
1614 | ||
a9ed2e25 | 1615 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1616 | { |
539cd03a | 1617 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1618 | struct nfs4_exception exception = { }; |
1619 | int err; | |
1620 | ||
1621 | do { | |
539cd03a | 1622 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1623 | switch (err) { |
1624 | default: | |
1625 | goto out; | |
1626 | case -NFS4ERR_GRACE: | |
1627 | case -NFS4ERR_DELAY: | |
1628 | nfs4_handle_exception(server, err, &exception); | |
1629 | err = 0; | |
1630 | } | |
202b50dc | 1631 | } while (exception.retry); |
a9ed2e25 | 1632 | out: |
202b50dc TM |
1633 | return err; |
1634 | } | |
1635 | ||
1da177e4 LT |
1636 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1637 | { | |
1da177e4 | 1638 | struct nfs_open_context *ctx; |
864472e9 | 1639 | int ret; |
1da177e4 | 1640 | |
864472e9 TM |
1641 | ctx = nfs4_state_find_open_context(state); |
1642 | if (IS_ERR(ctx)) | |
1643 | return PTR_ERR(ctx); | |
539cd03a | 1644 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1645 | put_nfs_open_context(ctx); |
1646 | return ret; | |
1da177e4 LT |
1647 | } |
1648 | ||
aa53ed54 JL |
1649 | /* |
1650 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1651 | * fields corresponding to attributes that were used to store the verifier. | |
1652 | * Make sure we clobber those fields in the later setattr call | |
1653 | */ | |
1654 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1655 | { | |
1656 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1657 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1658 | sattr->ia_valid |= ATTR_ATIME; | |
1659 | ||
1660 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1661 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1662 | sattr->ia_valid |= ATTR_MTIME; | |
1663 | } | |
1664 | ||
1da177e4 | 1665 | /* |
24ac23ab | 1666 | * Returns a referenced nfs4_state |
1da177e4 | 1667 | */ |
dc0b027d | 1668 | 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 |
1669 | { |
1670 | struct nfs4_state_owner *sp; | |
1671 | struct nfs4_state *state = NULL; | |
1672 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1673 | struct nfs4_opendata *opendata; |
aac00a8d | 1674 | int status; |
1da177e4 LT |
1675 | |
1676 | /* Protect against reboot recovery conflicts */ | |
1da177e4 LT |
1677 | status = -ENOMEM; |
1678 | if (!(sp = nfs4_get_state_owner(server, cred))) { | |
1679 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); | |
1680 | goto out_err; | |
1681 | } | |
58d9714a TM |
1682 | status = nfs4_recover_expired_lease(server); |
1683 | if (status != 0) | |
b4454fe1 | 1684 | goto err_put_state_owner; |
aac00a8d | 1685 | if (path->dentry->d_inode != NULL) |
dc0b027d | 1686 | nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode); |
58d9714a | 1687 | status = -ENOMEM; |
8535b2be | 1688 | opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr, GFP_KERNEL); |
e56e0b78 | 1689 | if (opendata == NULL) |
95d35cb4 | 1690 | goto err_put_state_owner; |
1da177e4 | 1691 | |
aac00a8d TM |
1692 | if (path->dentry->d_inode != NULL) |
1693 | opendata->state = nfs4_get_open_state(path->dentry->d_inode, sp); | |
1694 | ||
24ac23ab | 1695 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1696 | if (status != 0) |
c6d00e63 | 1697 | goto err_opendata_put; |
1da177e4 | 1698 | |
24ac23ab | 1699 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1700 | status = PTR_ERR(state); |
1701 | if (IS_ERR(state)) | |
c6d00e63 | 1702 | goto err_opendata_put; |
0df5dd4a | 1703 | if (server->caps & NFS_CAP_POSIX_LOCK) |
8e469ebd | 1704 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); |
0ab64e0e TM |
1705 | |
1706 | if (opendata->o_arg.open_flags & O_EXCL) { | |
1707 | nfs4_exclusive_attrset(opendata, sattr); | |
1708 | ||
1709 | nfs_fattr_init(opendata->o_res.f_attr); | |
1710 | status = nfs4_do_setattr(state->inode, cred, | |
1711 | opendata->o_res.f_attr, sattr, | |
1712 | state); | |
1713 | if (status == 0) | |
1714 | nfs_setattr_update_inode(state->inode, sattr); | |
1715 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
1716 | } | |
c6d00e63 | 1717 | nfs4_opendata_put(opendata); |
1da177e4 | 1718 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1719 | *res = state; |
1720 | return 0; | |
c6d00e63 TM |
1721 | err_opendata_put: |
1722 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
1723 | err_put_state_owner: |
1724 | nfs4_put_state_owner(sp); | |
1da177e4 | 1725 | out_err: |
1da177e4 LT |
1726 | *res = NULL; |
1727 | return status; | |
1728 | } | |
1729 | ||
1730 | ||
dc0b027d | 1731 | 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 |
1732 | { |
1733 | struct nfs4_exception exception = { }; | |
1734 | struct nfs4_state *res; | |
1735 | int status; | |
1736 | ||
1737 | do { | |
dc0b027d | 1738 | status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res); |
1da177e4 LT |
1739 | if (status == 0) |
1740 | break; | |
1741 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1742 | * book-keeping w.r.t. state-changing operations | |
1743 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1744 | * It is actually a sign of a bug on the client or on the server. | |
1745 | * | |
1746 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1747 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1748 | * have unhashed the old state_owner for us, and that we can |
1749 | * therefore safely retry using a new one. We should still warn | |
1750 | * the user though... | |
1751 | */ | |
1752 | if (status == -NFS4ERR_BAD_SEQID) { | |
6f43ddcc TM |
1753 | printk(KERN_WARNING "NFS: v4 server %s " |
1754 | " returned a bad sequence-id error!\n", | |
1755 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1756 | exception.retry = 1; |
1757 | continue; | |
1758 | } | |
550f5747 TM |
1759 | /* |
1760 | * BAD_STATEID on OPEN means that the server cancelled our | |
1761 | * state before it received the OPEN_CONFIRM. | |
1762 | * Recover by retrying the request as per the discussion | |
1763 | * on Page 181 of RFC3530. | |
1764 | */ | |
1765 | if (status == -NFS4ERR_BAD_STATEID) { | |
1766 | exception.retry = 1; | |
1767 | continue; | |
1768 | } | |
aac00a8d TM |
1769 | if (status == -EAGAIN) { |
1770 | /* We must have found a delegation */ | |
1771 | exception.retry = 1; | |
1772 | continue; | |
1773 | } | |
1da177e4 LT |
1774 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1775 | status, &exception)); | |
1776 | } while (exception.retry); | |
1777 | return res; | |
1778 | } | |
1779 | ||
659bfcd6 TM |
1780 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1781 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1782 | struct nfs4_state *state) | |
1da177e4 | 1783 | { |
3e4f6290 | 1784 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1785 | struct nfs_setattrargs arg = { |
3e4f6290 | 1786 | .fh = NFS_FH(inode), |
1da177e4 LT |
1787 | .iap = sattr, |
1788 | .server = server, | |
1789 | .bitmask = server->attr_bitmask, | |
1790 | }; | |
1791 | struct nfs_setattrres res = { | |
1792 | .fattr = fattr, | |
1793 | .server = server, | |
1794 | }; | |
1795 | struct rpc_message msg = { | |
659bfcd6 TM |
1796 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
1797 | .rpc_argp = &arg, | |
1798 | .rpc_resp = &res, | |
1799 | .rpc_cred = cred, | |
1da177e4 | 1800 | }; |
26e976a8 | 1801 | unsigned long timestamp = jiffies; |
65e4308d | 1802 | int status; |
1da177e4 | 1803 | |
0e574af1 | 1804 | nfs_fattr_init(fattr); |
1da177e4 | 1805 | |
3e4f6290 TM |
1806 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) { |
1807 | /* Use that stateid */ | |
1808 | } else if (state != NULL) { | |
77041ed9 | 1809 | nfs4_copy_stateid(&arg.stateid, state, current->files, current->tgid); |
08e9eac4 | 1810 | } else |
1da177e4 LT |
1811 | memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid)); |
1812 | ||
cccef3b9 | 1813 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
26e976a8 TM |
1814 | if (status == 0 && state != NULL) |
1815 | renew_lease(server, timestamp); | |
65e4308d | 1816 | return status; |
1da177e4 LT |
1817 | } |
1818 | ||
659bfcd6 TM |
1819 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1820 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1821 | struct nfs4_state *state) | |
1da177e4 | 1822 | { |
3e4f6290 | 1823 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
1824 | struct nfs4_exception exception = { }; |
1825 | int err; | |
1826 | do { | |
1827 | err = nfs4_handle_exception(server, | |
659bfcd6 | 1828 | _nfs4_do_setattr(inode, cred, fattr, sattr, state), |
1da177e4 LT |
1829 | &exception); |
1830 | } while (exception.retry); | |
1831 | return err; | |
1832 | } | |
1833 | ||
1834 | struct nfs4_closedata { | |
4a35bd41 | 1835 | struct path path; |
1da177e4 LT |
1836 | struct inode *inode; |
1837 | struct nfs4_state *state; | |
1838 | struct nfs_closeargs arg; | |
1839 | struct nfs_closeres res; | |
516a6af6 | 1840 | struct nfs_fattr fattr; |
26e976a8 | 1841 | unsigned long timestamp; |
1da177e4 LT |
1842 | }; |
1843 | ||
963d8fe5 | 1844 | static void nfs4_free_closedata(void *data) |
9512135d | 1845 | { |
963d8fe5 TM |
1846 | struct nfs4_closedata *calldata = data; |
1847 | struct nfs4_state_owner *sp = calldata->state->owner; | |
9512135d TM |
1848 | |
1849 | nfs4_put_open_state(calldata->state); | |
1850 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 1851 | nfs4_put_state_owner(sp); |
31f31db1 | 1852 | path_put(&calldata->path); |
9512135d TM |
1853 | kfree(calldata); |
1854 | } | |
1855 | ||
88069f77 TM |
1856 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
1857 | fmode_t fmode) | |
1858 | { | |
1859 | spin_lock(&state->owner->so_lock); | |
1860 | if (!(fmode & FMODE_READ)) | |
1861 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1862 | if (!(fmode & FMODE_WRITE)) | |
1863 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1864 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1865 | spin_unlock(&state->owner->so_lock); | |
1866 | } | |
1867 | ||
963d8fe5 | 1868 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 1869 | { |
963d8fe5 | 1870 | struct nfs4_closedata *calldata = data; |
1da177e4 | 1871 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
1872 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
1873 | ||
14516c3a TM |
1874 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
1875 | return; | |
1da177e4 LT |
1876 | /* hmm. we are done with the inode, and in the process of freeing |
1877 | * the state_owner. we keep this around to process errors | |
1878 | */ | |
1da177e4 LT |
1879 | switch (task->tk_status) { |
1880 | case 0: | |
45328c35 | 1881 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 1882 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
1883 | nfs4_close_clear_stateid_flags(state, |
1884 | calldata->arg.fmode); | |
1da177e4 LT |
1885 | break; |
1886 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
1887 | case -NFS4ERR_OLD_STATEID: |
1888 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 1889 | case -NFS4ERR_EXPIRED: |
dc0b027d | 1890 | if (calldata->arg.fmode == 0) |
9e33bed5 | 1891 | break; |
1da177e4 | 1892 | default: |
72211dbe TM |
1893 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
1894 | rpc_restart_call_prepare(task); | |
1da177e4 | 1895 | } |
72211dbe | 1896 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 1897 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
1da177e4 LT |
1898 | } |
1899 | ||
4ce70ada | 1900 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 1901 | { |
4ce70ada | 1902 | struct nfs4_closedata *calldata = data; |
9512135d | 1903 | struct nfs4_state *state = calldata->state; |
88069f77 | 1904 | int call_close = 0; |
9512135d | 1905 | |
963d8fe5 | 1906 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 1907 | return; |
003707c7 | 1908 | |
88069f77 TM |
1909 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
1910 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 1911 | spin_lock(&state->owner->so_lock); |
003707c7 | 1912 | /* Calculate the change in open mode */ |
e7616923 | 1913 | if (state->n_rdwr == 0) { |
003707c7 | 1914 | if (state->n_rdonly == 0) { |
88069f77 TM |
1915 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
1916 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
1917 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
1918 | } |
1919 | if (state->n_wronly == 0) { | |
88069f77 TM |
1920 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
1921 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
1922 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 1923 | } |
e7616923 | 1924 | } |
4cecb76f | 1925 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
1926 | |
1927 | if (!call_close) { | |
963d8fe5 TM |
1928 | /* Note: exit _without_ calling nfs4_close_done */ |
1929 | task->tk_action = NULL; | |
9512135d TM |
1930 | return; |
1931 | } | |
88069f77 TM |
1932 | |
1933 | if (calldata->arg.fmode == 0) | |
1934 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; | |
1935 | ||
516a6af6 | 1936 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 1937 | calldata->timestamp = jiffies; |
035168ab | 1938 | if (nfs4_setup_sequence(NFS_SERVER(calldata->inode), |
19ddab06 AA |
1939 | &calldata->arg.seq_args, &calldata->res.seq_res, |
1940 | 1, task)) | |
1941 | return; | |
5138fde0 | 1942 | rpc_call_start(task); |
1da177e4 LT |
1943 | } |
1944 | ||
963d8fe5 | 1945 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 1946 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
1947 | .rpc_call_done = nfs4_close_done, |
1948 | .rpc_release = nfs4_free_closedata, | |
1949 | }; | |
1950 | ||
1da177e4 LT |
1951 | /* |
1952 | * It is possible for data to be read/written from a mem-mapped file | |
1953 | * after the sys_close call (which hits the vfs layer as a flush). | |
1954 | * This means that we can't safely call nfsv4 close on a file until | |
1955 | * the inode is cleared. This in turn means that we are not good | |
1956 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
1957 | * share state even when we are done with one of the three share | |
1958 | * stateid's in the inode. | |
1959 | * | |
1960 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
1961 | */ | |
8535b2be | 1962 | int nfs4_do_close(struct path *path, struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 1963 | { |
4a35bd41 | 1964 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 1965 | struct nfs4_closedata *calldata; |
b39e625b TM |
1966 | struct nfs4_state_owner *sp = state->owner; |
1967 | struct rpc_task *task; | |
5138fde0 TM |
1968 | struct rpc_message msg = { |
1969 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
1970 | .rpc_cred = state->owner->so_cred, | |
1971 | }; | |
c970aa85 TM |
1972 | struct rpc_task_setup task_setup_data = { |
1973 | .rpc_client = server->client, | |
5138fde0 | 1974 | .rpc_message = &msg, |
c970aa85 | 1975 | .callback_ops = &nfs4_close_ops, |
101070ca | 1976 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1977 | .flags = RPC_TASK_ASYNC, |
1978 | }; | |
9512135d | 1979 | int status = -ENOMEM; |
1da177e4 | 1980 | |
8535b2be | 1981 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 1982 | if (calldata == NULL) |
9512135d | 1983 | goto out; |
4a35bd41 | 1984 | calldata->inode = state->inode; |
1da177e4 | 1985 | calldata->state = state; |
4a35bd41 | 1986 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 1987 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 1988 | /* Serialization for the sequence id */ |
8535b2be | 1989 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
1990 | if (calldata->arg.seqid == NULL) |
1991 | goto out_free_calldata; | |
dc0b027d | 1992 | calldata->arg.fmode = 0; |
a65318bf | 1993 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 1994 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 1995 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 1996 | calldata->res.server = server; |
f6948697 AV |
1997 | path_get(path); |
1998 | calldata->path = *path; | |
9512135d | 1999 | |
1174dd1f TM |
2000 | msg.rpc_argp = &calldata->arg; |
2001 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2002 | task_setup_data.callback_data = calldata; |
2003 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2004 | if (IS_ERR(task)) |
2005 | return PTR_ERR(task); | |
a49c3c77 TM |
2006 | status = 0; |
2007 | if (wait) | |
2008 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2009 | rpc_put_task(task); |
a49c3c77 | 2010 | return status; |
9512135d TM |
2011 | out_free_calldata: |
2012 | kfree(calldata); | |
2013 | out: | |
b39e625b TM |
2014 | nfs4_put_open_state(state); |
2015 | nfs4_put_state_owner(sp); | |
9512135d | 2016 | return status; |
1da177e4 LT |
2017 | } |
2018 | ||
2b484297 | 2019 | static struct inode * |
cd9a1c0e | 2020 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2021 | { |
1da177e4 | 2022 | struct nfs4_state *state; |
1da177e4 | 2023 | |
565277f6 | 2024 | /* Protect against concurrent sillydeletes */ |
cd9a1c0e | 2025 | state = nfs4_do_open(dir, &ctx->path, ctx->mode, open_flags, attr, ctx->cred); |
f46e0bd3 TM |
2026 | if (IS_ERR(state)) |
2027 | return ERR_CAST(state); | |
cd9a1c0e | 2028 | ctx->state = state; |
f46e0bd3 | 2029 | return igrab(state->inode); |
1da177e4 LT |
2030 | } |
2031 | ||
1185a552 | 2032 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2033 | { |
2034 | if (ctx->state == NULL) | |
2035 | return; | |
2036 | if (is_sync) | |
2037 | nfs4_close_sync(&ctx->path, ctx->state, ctx->mode); | |
2038 | else | |
2039 | nfs4_close_state(&ctx->path, ctx->state, ctx->mode); | |
2040 | } | |
1da177e4 LT |
2041 | |
2042 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2043 | { | |
43652ad5 BH |
2044 | struct nfs4_server_caps_arg args = { |
2045 | .fhandle = fhandle, | |
2046 | }; | |
1da177e4 LT |
2047 | struct nfs4_server_caps_res res = {}; |
2048 | struct rpc_message msg = { | |
2049 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2050 | .rpc_argp = &args, |
1da177e4 LT |
2051 | .rpc_resp = &res, |
2052 | }; | |
2053 | int status; | |
2054 | ||
cccef3b9 | 2055 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2056 | if (status == 0) { |
2057 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2058 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2059 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2060 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2061 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2062 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2063 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2064 | server->caps |= NFS_CAP_ACLS; | |
2065 | if (res.has_links != 0) | |
2066 | server->caps |= NFS_CAP_HARDLINKS; | |
2067 | if (res.has_symlinks != 0) | |
2068 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2069 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2070 | server->caps |= NFS_CAP_FILEID; | |
2071 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2072 | server->caps |= NFS_CAP_MODE; | |
2073 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2074 | server->caps |= NFS_CAP_NLINK; | |
2075 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2076 | server->caps |= NFS_CAP_OWNER; | |
2077 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2078 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2079 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2080 | server->caps |= NFS_CAP_ATIME; | |
2081 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2082 | server->caps |= NFS_CAP_CTIME; | |
2083 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2084 | server->caps |= NFS_CAP_MTIME; | |
2085 | ||
a65318bf TM |
2086 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2087 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2088 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 LT |
2089 | server->acl_bitmask = res.acl_bitmask; |
2090 | } | |
cccef3b9 | 2091 | |
1da177e4 LT |
2092 | return status; |
2093 | } | |
2094 | ||
55a97593 | 2095 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2096 | { |
2097 | struct nfs4_exception exception = { }; | |
2098 | int err; | |
2099 | do { | |
2100 | err = nfs4_handle_exception(server, | |
2101 | _nfs4_server_capabilities(server, fhandle), | |
2102 | &exception); | |
2103 | } while (exception.retry); | |
2104 | return err; | |
2105 | } | |
2106 | ||
2107 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2108 | struct nfs_fsinfo *info) | |
2109 | { | |
1da177e4 LT |
2110 | struct nfs4_lookup_root_arg args = { |
2111 | .bitmask = nfs4_fattr_bitmap, | |
2112 | }; | |
2113 | struct nfs4_lookup_res res = { | |
2114 | .server = server, | |
0e574af1 | 2115 | .fattr = info->fattr, |
1da177e4 LT |
2116 | .fh = fhandle, |
2117 | }; | |
2118 | struct rpc_message msg = { | |
2119 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2120 | .rpc_argp = &args, | |
2121 | .rpc_resp = &res, | |
2122 | }; | |
008f55d0 | 2123 | |
0e574af1 | 2124 | nfs_fattr_init(info->fattr); |
fccba804 | 2125 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2126 | } |
2127 | ||
2128 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2129 | struct nfs_fsinfo *info) | |
2130 | { | |
2131 | struct nfs4_exception exception = { }; | |
2132 | int err; | |
2133 | do { | |
2134 | err = nfs4_handle_exception(server, | |
2135 | _nfs4_lookup_root(server, fhandle, info), | |
2136 | &exception); | |
2137 | } while (exception.retry); | |
2138 | return err; | |
2139 | } | |
2140 | ||
54ceac45 DH |
2141 | /* |
2142 | * get the file handle for the "/" directory on the server | |
2143 | */ | |
1da177e4 | 2144 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2145 | struct nfs_fsinfo *info) |
1da177e4 | 2146 | { |
1da177e4 LT |
2147 | int status; |
2148 | ||
1da177e4 | 2149 | status = nfs4_lookup_root(server, fhandle, info); |
1da177e4 LT |
2150 | if (status == 0) |
2151 | status = nfs4_server_capabilities(server, fhandle); | |
2152 | if (status == 0) | |
2153 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2154 | return nfs4_map_errors(status); |
1da177e4 LT |
2155 | } |
2156 | ||
6b97fd3d MN |
2157 | /* |
2158 | * Get locations and (maybe) other attributes of a referral. | |
2159 | * Note that we'll actually follow the referral later when | |
2160 | * we detect fsid mismatch in inode revalidation | |
2161 | */ | |
56659e99 | 2162 | static int nfs4_get_referral(struct inode *dir, const struct qstr *name, struct nfs_fattr *fattr, struct nfs_fh *fhandle) |
6b97fd3d MN |
2163 | { |
2164 | int status = -ENOMEM; | |
2165 | struct page *page = NULL; | |
2166 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2167 | |
2168 | page = alloc_page(GFP_KERNEL); | |
2169 | if (page == NULL) | |
2170 | goto out; | |
2171 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2172 | if (locations == NULL) | |
2173 | goto out; | |
2174 | ||
c228fd3a | 2175 | status = nfs4_proc_fs_locations(dir, name, locations, page); |
6b97fd3d MN |
2176 | if (status != 0) |
2177 | goto out; | |
2178 | /* Make sure server returned a different fsid for the referral */ | |
2179 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
3110ff80 | 2180 | dprintk("%s: server did not return a different fsid for a referral at %s\n", __func__, name->name); |
6b97fd3d MN |
2181 | status = -EIO; |
2182 | goto out; | |
2183 | } | |
2184 | ||
2185 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); | |
2186 | fattr->valid |= NFS_ATTR_FATTR_V4_REFERRAL; | |
2187 | if (!fattr->mode) | |
2188 | fattr->mode = S_IFDIR; | |
2189 | memset(fhandle, 0, sizeof(struct nfs_fh)); | |
2190 | out: | |
2191 | if (page) | |
2192 | __free_page(page); | |
5d7ca35a | 2193 | kfree(locations); |
6b97fd3d MN |
2194 | return status; |
2195 | } | |
2196 | ||
1da177e4 LT |
2197 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2198 | { | |
2199 | struct nfs4_getattr_arg args = { | |
2200 | .fh = fhandle, | |
2201 | .bitmask = server->attr_bitmask, | |
2202 | }; | |
2203 | struct nfs4_getattr_res res = { | |
2204 | .fattr = fattr, | |
2205 | .server = server, | |
2206 | }; | |
2207 | struct rpc_message msg = { | |
2208 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2209 | .rpc_argp = &args, | |
2210 | .rpc_resp = &res, | |
2211 | }; | |
2212 | ||
0e574af1 | 2213 | nfs_fattr_init(fattr); |
cccef3b9 | 2214 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2215 | } |
2216 | ||
2217 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2218 | { | |
2219 | struct nfs4_exception exception = { }; | |
2220 | int err; | |
2221 | do { | |
2222 | err = nfs4_handle_exception(server, | |
2223 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2224 | &exception); | |
2225 | } while (exception.retry); | |
2226 | return err; | |
2227 | } | |
2228 | ||
2229 | /* | |
2230 | * The file is not closed if it is opened due to the a request to change | |
2231 | * the size of the file. The open call will not be needed once the | |
2232 | * VFS layer lookup-intents are implemented. | |
2233 | * | |
2234 | * Close is called when the inode is destroyed. | |
2235 | * If we haven't opened the file for O_WRONLY, we | |
2236 | * need to in the size_change case to obtain a stateid. | |
2237 | * | |
2238 | * Got race? | |
2239 | * Because OPEN is always done by name in nfsv4, it is | |
2240 | * possible that we opened a different file by the same | |
2241 | * name. We can recognize this race condition, but we | |
2242 | * can't do anything about it besides returning an error. | |
2243 | * | |
2244 | * This will be fixed with VFS changes (lookup-intent). | |
2245 | */ | |
2246 | static int | |
2247 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2248 | struct iattr *sattr) | |
2249 | { | |
08e9eac4 | 2250 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2251 | struct rpc_cred *cred = NULL; |
d530838b | 2252 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2253 | int status; |
2254 | ||
0e574af1 | 2255 | nfs_fattr_init(fattr); |
1da177e4 | 2256 | |
d530838b | 2257 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2258 | if (sattr->ia_valid & ATTR_FILE) { |
2259 | struct nfs_open_context *ctx; | |
2260 | ||
2261 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2262 | if (ctx) { |
2263 | cred = ctx->cred; | |
2264 | state = ctx->state; | |
2265 | } | |
659bfcd6 | 2266 | } |
08e9eac4 | 2267 | |
659bfcd6 | 2268 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2269 | if (status == 0) |
2270 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2271 | return status; |
2272 | } | |
2273 | ||
56659e99 TM |
2274 | static int _nfs4_proc_lookupfh(struct nfs_server *server, const struct nfs_fh *dirfh, |
2275 | const struct qstr *name, struct nfs_fh *fhandle, | |
2b3de441 DH |
2276 | struct nfs_fattr *fattr) |
2277 | { | |
2278 | int status; | |
2279 | struct nfs4_lookup_arg args = { | |
2280 | .bitmask = server->attr_bitmask, | |
2281 | .dir_fh = dirfh, | |
2282 | .name = name, | |
2283 | }; | |
2284 | struct nfs4_lookup_res res = { | |
2285 | .server = server, | |
2286 | .fattr = fattr, | |
2287 | .fh = fhandle, | |
2288 | }; | |
2289 | struct rpc_message msg = { | |
2290 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2291 | .rpc_argp = &args, | |
2292 | .rpc_resp = &res, | |
2293 | }; | |
2294 | ||
2295 | nfs_fattr_init(fattr); | |
2296 | ||
2297 | dprintk("NFS call lookupfh %s\n", name->name); | |
cccef3b9 | 2298 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
2b3de441 | 2299 | dprintk("NFS reply lookupfh: %d\n", status); |
2b3de441 DH |
2300 | return status; |
2301 | } | |
2302 | ||
2303 | static int nfs4_proc_lookupfh(struct nfs_server *server, struct nfs_fh *dirfh, | |
2304 | struct qstr *name, struct nfs_fh *fhandle, | |
2305 | struct nfs_fattr *fattr) | |
2306 | { | |
2307 | struct nfs4_exception exception = { }; | |
2308 | int err; | |
2309 | do { | |
4e56e082 TM |
2310 | err = _nfs4_proc_lookupfh(server, dirfh, name, fhandle, fattr); |
2311 | /* FIXME: !!!! */ | |
2312 | if (err == -NFS4ERR_MOVED) { | |
2313 | err = -EREMOTE; | |
2314 | break; | |
2315 | } | |
2316 | err = nfs4_handle_exception(server, err, &exception); | |
2b3de441 DH |
2317 | } while (exception.retry); |
2318 | return err; | |
2319 | } | |
2320 | ||
56659e99 | 2321 | static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, |
1da177e4 LT |
2322 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2323 | { | |
4e56e082 | 2324 | int status; |
1da177e4 LT |
2325 | |
2326 | dprintk("NFS call lookup %s\n", name->name); | |
4e56e082 | 2327 | status = _nfs4_proc_lookupfh(NFS_SERVER(dir), NFS_FH(dir), name, fhandle, fattr); |
6b97fd3d MN |
2328 | if (status == -NFS4ERR_MOVED) |
2329 | status = nfs4_get_referral(dir, name, fattr, fhandle); | |
1da177e4 LT |
2330 | dprintk("NFS reply lookup: %d\n", status); |
2331 | return status; | |
2332 | } | |
2333 | ||
2334 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2335 | { | |
2336 | struct nfs4_exception exception = { }; | |
2337 | int err; | |
2338 | do { | |
2339 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2340 | _nfs4_proc_lookup(dir, name, fhandle, fattr), | |
2341 | &exception); | |
2342 | } while (exception.retry); | |
2343 | return err; | |
2344 | } | |
2345 | ||
2346 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2347 | { | |
76b32999 | 2348 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2349 | struct nfs4_accessargs args = { |
2350 | .fh = NFS_FH(inode), | |
76b32999 TM |
2351 | .bitmask = server->attr_bitmask, |
2352 | }; | |
2353 | struct nfs4_accessres res = { | |
2354 | .server = server, | |
1da177e4 | 2355 | }; |
1da177e4 LT |
2356 | struct rpc_message msg = { |
2357 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2358 | .rpc_argp = &args, | |
2359 | .rpc_resp = &res, | |
2360 | .rpc_cred = entry->cred, | |
2361 | }; | |
2362 | int mode = entry->mask; | |
2363 | int status; | |
2364 | ||
2365 | /* | |
2366 | * Determine which access bits we want to ask for... | |
2367 | */ | |
2368 | if (mode & MAY_READ) | |
2369 | args.access |= NFS4_ACCESS_READ; | |
2370 | if (S_ISDIR(inode->i_mode)) { | |
2371 | if (mode & MAY_WRITE) | |
2372 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2373 | if (mode & MAY_EXEC) | |
2374 | args.access |= NFS4_ACCESS_LOOKUP; | |
2375 | } else { | |
2376 | if (mode & MAY_WRITE) | |
2377 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2378 | if (mode & MAY_EXEC) | |
2379 | args.access |= NFS4_ACCESS_EXECUTE; | |
2380 | } | |
c407d41a TM |
2381 | |
2382 | res.fattr = nfs_alloc_fattr(); | |
2383 | if (res.fattr == NULL) | |
2384 | return -ENOMEM; | |
2385 | ||
cccef3b9 | 2386 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2387 | if (!status) { |
2388 | entry->mask = 0; | |
2389 | if (res.access & NFS4_ACCESS_READ) | |
2390 | entry->mask |= MAY_READ; | |
2391 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
2392 | entry->mask |= MAY_WRITE; | |
2393 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
2394 | entry->mask |= MAY_EXEC; | |
c407d41a | 2395 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2396 | } |
c407d41a | 2397 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2398 | return status; |
2399 | } | |
2400 | ||
2401 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2402 | { | |
2403 | struct nfs4_exception exception = { }; | |
2404 | int err; | |
2405 | do { | |
2406 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2407 | _nfs4_proc_access(inode, entry), | |
2408 | &exception); | |
2409 | } while (exception.retry); | |
2410 | return err; | |
2411 | } | |
2412 | ||
2413 | /* | |
2414 | * TODO: For the time being, we don't try to get any attributes | |
2415 | * along with any of the zero-copy operations READ, READDIR, | |
2416 | * READLINK, WRITE. | |
2417 | * | |
2418 | * In the case of the first three, we want to put the GETATTR | |
2419 | * after the read-type operation -- this is because it is hard | |
2420 | * to predict the length of a GETATTR response in v4, and thus | |
2421 | * align the READ data correctly. This means that the GETATTR | |
2422 | * may end up partially falling into the page cache, and we should | |
2423 | * shift it into the 'tail' of the xdr_buf before processing. | |
2424 | * To do this efficiently, we need to know the total length | |
2425 | * of data received, which doesn't seem to be available outside | |
2426 | * of the RPC layer. | |
2427 | * | |
2428 | * In the case of WRITE, we also want to put the GETATTR after | |
2429 | * the operation -- in this case because we want to make sure | |
2430 | * we get the post-operation mtime and size. This means that | |
2431 | * we can't use xdr_encode_pages() as written: we need a variant | |
2432 | * of it which would leave room in the 'tail' iovec. | |
2433 | * | |
2434 | * Both of these changes to the XDR layer would in fact be quite | |
2435 | * minor, but I decided to leave them for a subsequent patch. | |
2436 | */ | |
2437 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2438 | unsigned int pgbase, unsigned int pglen) | |
2439 | { | |
2440 | struct nfs4_readlink args = { | |
2441 | .fh = NFS_FH(inode), | |
2442 | .pgbase = pgbase, | |
2443 | .pglen = pglen, | |
2444 | .pages = &page, | |
2445 | }; | |
f50c7000 | 2446 | struct nfs4_readlink_res res; |
1da177e4 LT |
2447 | struct rpc_message msg = { |
2448 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2449 | .rpc_argp = &args, | |
f50c7000 | 2450 | .rpc_resp = &res, |
1da177e4 LT |
2451 | }; |
2452 | ||
cccef3b9 | 2453 | return nfs4_call_sync(NFS_SERVER(inode), &msg, &args, &res, 0); |
1da177e4 LT |
2454 | } |
2455 | ||
2456 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2457 | unsigned int pgbase, unsigned int pglen) | |
2458 | { | |
2459 | struct nfs4_exception exception = { }; | |
2460 | int err; | |
2461 | do { | |
2462 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2463 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2464 | &exception); | |
2465 | } while (exception.retry); | |
2466 | return err; | |
2467 | } | |
2468 | ||
1da177e4 LT |
2469 | /* |
2470 | * Got race? | |
2471 | * We will need to arrange for the VFS layer to provide an atomic open. | |
2472 | * Until then, this create/open method is prone to inefficiency and race | |
2473 | * conditions due to the lookup, create, and open VFS calls from sys_open() | |
2474 | * placed on the wire. | |
2475 | * | |
2476 | * Given the above sorry state of affairs, I'm simply sending an OPEN. | |
2477 | * The file will be opened again in the subsequent VFS open call | |
2478 | * (nfs4_proc_file_open). | |
2479 | * | |
2480 | * The open for read will just hang around to be used by any process that | |
2481 | * opens the file O_RDONLY. This will all be resolved with the VFS changes. | |
2482 | */ | |
2483 | ||
2484 | static int | |
2485 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
c0204fd2 | 2486 | int flags, struct nfs_open_context *ctx) |
1da177e4 | 2487 | { |
c0204fd2 | 2488 | struct path my_path = { |
ad389da7 TM |
2489 | .dentry = dentry, |
2490 | }; | |
c0204fd2 | 2491 | struct path *path = &my_path; |
1da177e4 | 2492 | struct nfs4_state *state; |
c0204fd2 TM |
2493 | struct rpc_cred *cred = NULL; |
2494 | fmode_t fmode = 0; | |
1da177e4 LT |
2495 | int status = 0; |
2496 | ||
c0204fd2 TM |
2497 | if (ctx != NULL) { |
2498 | cred = ctx->cred; | |
2499 | path = &ctx->path; | |
2500 | fmode = ctx->mode; | |
1da177e4 | 2501 | } |
a8a5da99 | 2502 | sattr->ia_mode &= ~current_umask(); |
c0204fd2 | 2503 | state = nfs4_do_open(dir, path, fmode, flags, sattr, cred); |
d4d9cdcb | 2504 | d_drop(dentry); |
1da177e4 LT |
2505 | if (IS_ERR(state)) { |
2506 | status = PTR_ERR(state); | |
c0204fd2 | 2507 | goto out; |
1da177e4 | 2508 | } |
d4d9cdcb | 2509 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2510 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
c0204fd2 TM |
2511 | if (ctx != NULL) |
2512 | ctx->state = state; | |
02a913a7 | 2513 | else |
c0204fd2 | 2514 | nfs4_close_sync(path, state, fmode); |
1da177e4 LT |
2515 | out: |
2516 | return status; | |
2517 | } | |
2518 | ||
2519 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2520 | { | |
16e42959 | 2521 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2522 | struct nfs_removeargs args = { |
1da177e4 | 2523 | .fh = NFS_FH(dir), |
4fdc17b2 TM |
2524 | .name.len = name->len, |
2525 | .name.name = name->name, | |
16e42959 TM |
2526 | .bitmask = server->attr_bitmask, |
2527 | }; | |
4fdc17b2 | 2528 | struct nfs_removeres res = { |
16e42959 | 2529 | .server = server, |
1da177e4 | 2530 | }; |
1da177e4 | 2531 | struct rpc_message msg = { |
4fdc17b2 TM |
2532 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2533 | .rpc_argp = &args, | |
2534 | .rpc_resp = &res, | |
1da177e4 | 2535 | }; |
d346890b TM |
2536 | int status = -ENOMEM; |
2537 | ||
2538 | res.dir_attr = nfs_alloc_fattr(); | |
2539 | if (res.dir_attr == NULL) | |
2540 | goto out; | |
1da177e4 | 2541 | |
cccef3b9 | 2542 | status = nfs4_call_sync(server, &msg, &args, &res, 1); |
16e42959 TM |
2543 | if (status == 0) { |
2544 | update_changeattr(dir, &res.cinfo); | |
d346890b | 2545 | nfs_post_op_update_inode(dir, res.dir_attr); |
16e42959 | 2546 | } |
d346890b TM |
2547 | nfs_free_fattr(res.dir_attr); |
2548 | out: | |
1da177e4 LT |
2549 | return status; |
2550 | } | |
2551 | ||
2552 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2553 | { | |
2554 | struct nfs4_exception exception = { }; | |
2555 | int err; | |
2556 | do { | |
2557 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2558 | _nfs4_proc_remove(dir, name), | |
2559 | &exception); | |
2560 | } while (exception.retry); | |
2561 | return err; | |
2562 | } | |
2563 | ||
e4eff1a6 | 2564 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2565 | { |
e4eff1a6 TM |
2566 | struct nfs_server *server = NFS_SERVER(dir); |
2567 | struct nfs_removeargs *args = msg->rpc_argp; | |
2568 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2569 | |
a65318bf | 2570 | args->bitmask = server->cache_consistency_bitmask; |
e4eff1a6 | 2571 | res->server = server; |
dfb4f309 | 2572 | res->seq_res.sr_slot = NULL; |
1da177e4 | 2573 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
1da177e4 LT |
2574 | } |
2575 | ||
e4eff1a6 | 2576 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2577 | { |
e4eff1a6 TM |
2578 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2579 | ||
14516c3a TM |
2580 | if (!nfs4_sequence_done(task, &res->seq_res)) |
2581 | return 0; | |
9e33bed5 | 2582 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
2583 | return 0; |
2584 | update_changeattr(dir, &res->cinfo); | |
d346890b | 2585 | nfs_post_op_update_inode(dir, res->dir_attr); |
e4eff1a6 | 2586 | return 1; |
1da177e4 LT |
2587 | } |
2588 | ||
d3d4152a JL |
2589 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
2590 | { | |
2591 | struct nfs_server *server = NFS_SERVER(dir); | |
2592 | struct nfs_renameargs *arg = msg->rpc_argp; | |
2593 | struct nfs_renameres *res = msg->rpc_resp; | |
2594 | ||
2595 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
2596 | arg->bitmask = server->attr_bitmask; | |
2597 | res->server = server; | |
2598 | } | |
2599 | ||
2600 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
2601 | struct inode *new_dir) | |
2602 | { | |
2603 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
2604 | ||
2605 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
2606 | return 0; | |
2607 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
2608 | return 0; | |
2609 | ||
2610 | update_changeattr(old_dir, &res->old_cinfo); | |
2611 | nfs_post_op_update_inode(old_dir, res->old_fattr); | |
2612 | update_changeattr(new_dir, &res->new_cinfo); | |
2613 | nfs_post_op_update_inode(new_dir, res->new_fattr); | |
2614 | return 1; | |
2615 | } | |
2616 | ||
1da177e4 LT |
2617 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
2618 | struct inode *new_dir, struct qstr *new_name) | |
2619 | { | |
6caf2c82 | 2620 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 2621 | struct nfs_renameargs arg = { |
1da177e4 LT |
2622 | .old_dir = NFS_FH(old_dir), |
2623 | .new_dir = NFS_FH(new_dir), | |
2624 | .old_name = old_name, | |
2625 | .new_name = new_name, | |
6caf2c82 TM |
2626 | .bitmask = server->attr_bitmask, |
2627 | }; | |
e8582a8b | 2628 | struct nfs_renameres res = { |
6caf2c82 | 2629 | .server = server, |
1da177e4 | 2630 | }; |
1da177e4 LT |
2631 | struct rpc_message msg = { |
2632 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2633 | .rpc_argp = &arg, | |
2634 | .rpc_resp = &res, | |
2635 | }; | |
011fff72 | 2636 | int status = -ENOMEM; |
1da177e4 | 2637 | |
011fff72 TM |
2638 | res.old_fattr = nfs_alloc_fattr(); |
2639 | res.new_fattr = nfs_alloc_fattr(); | |
2640 | if (res.old_fattr == NULL || res.new_fattr == NULL) | |
2641 | goto out; | |
1da177e4 | 2642 | |
011fff72 | 2643 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
1da177e4 LT |
2644 | if (!status) { |
2645 | update_changeattr(old_dir, &res.old_cinfo); | |
6caf2c82 | 2646 | nfs_post_op_update_inode(old_dir, res.old_fattr); |
1da177e4 | 2647 | update_changeattr(new_dir, &res.new_cinfo); |
6caf2c82 | 2648 | nfs_post_op_update_inode(new_dir, res.new_fattr); |
1da177e4 | 2649 | } |
011fff72 TM |
2650 | out: |
2651 | nfs_free_fattr(res.new_fattr); | |
2652 | nfs_free_fattr(res.old_fattr); | |
1da177e4 LT |
2653 | return status; |
2654 | } | |
2655 | ||
2656 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2657 | struct inode *new_dir, struct qstr *new_name) | |
2658 | { | |
2659 | struct nfs4_exception exception = { }; | |
2660 | int err; | |
2661 | do { | |
2662 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2663 | _nfs4_proc_rename(old_dir, old_name, | |
2664 | new_dir, new_name), | |
2665 | &exception); | |
2666 | } while (exception.retry); | |
2667 | return err; | |
2668 | } | |
2669 | ||
2670 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2671 | { | |
91ba2eee | 2672 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2673 | struct nfs4_link_arg arg = { |
2674 | .fh = NFS_FH(inode), | |
2675 | .dir_fh = NFS_FH(dir), | |
2676 | .name = name, | |
91ba2eee TM |
2677 | .bitmask = server->attr_bitmask, |
2678 | }; | |
91ba2eee TM |
2679 | struct nfs4_link_res res = { |
2680 | .server = server, | |
1da177e4 | 2681 | }; |
1da177e4 LT |
2682 | struct rpc_message msg = { |
2683 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
2684 | .rpc_argp = &arg, | |
91ba2eee | 2685 | .rpc_resp = &res, |
1da177e4 | 2686 | }; |
136f2627 TM |
2687 | int status = -ENOMEM; |
2688 | ||
2689 | res.fattr = nfs_alloc_fattr(); | |
2690 | res.dir_attr = nfs_alloc_fattr(); | |
2691 | if (res.fattr == NULL || res.dir_attr == NULL) | |
2692 | goto out; | |
1da177e4 | 2693 | |
cccef3b9 | 2694 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
91ba2eee TM |
2695 | if (!status) { |
2696 | update_changeattr(dir, &res.cinfo); | |
2697 | nfs_post_op_update_inode(dir, res.dir_attr); | |
73a3d07c | 2698 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 2699 | } |
136f2627 TM |
2700 | out: |
2701 | nfs_free_fattr(res.dir_attr); | |
2702 | nfs_free_fattr(res.fattr); | |
1da177e4 LT |
2703 | return status; |
2704 | } | |
2705 | ||
2706 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2707 | { | |
2708 | struct nfs4_exception exception = { }; | |
2709 | int err; | |
2710 | do { | |
2711 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2712 | _nfs4_proc_link(inode, dir, name), | |
2713 | &exception); | |
2714 | } while (exception.retry); | |
2715 | return err; | |
2716 | } | |
2717 | ||
57dc9a57 TM |
2718 | struct nfs4_createdata { |
2719 | struct rpc_message msg; | |
2720 | struct nfs4_create_arg arg; | |
2721 | struct nfs4_create_res res; | |
2722 | struct nfs_fh fh; | |
2723 | struct nfs_fattr fattr; | |
2724 | struct nfs_fattr dir_fattr; | |
2725 | }; | |
2726 | ||
2727 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
2728 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
2729 | { | |
2730 | struct nfs4_createdata *data; | |
2731 | ||
2732 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
2733 | if (data != NULL) { | |
2734 | struct nfs_server *server = NFS_SERVER(dir); | |
2735 | ||
2736 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
2737 | data->msg.rpc_argp = &data->arg; | |
2738 | data->msg.rpc_resp = &data->res; | |
2739 | data->arg.dir_fh = NFS_FH(dir); | |
2740 | data->arg.server = server; | |
2741 | data->arg.name = name; | |
2742 | data->arg.attrs = sattr; | |
2743 | data->arg.ftype = ftype; | |
2744 | data->arg.bitmask = server->attr_bitmask; | |
2745 | data->res.server = server; | |
2746 | data->res.fh = &data->fh; | |
2747 | data->res.fattr = &data->fattr; | |
2748 | data->res.dir_fattr = &data->dir_fattr; | |
2749 | nfs_fattr_init(data->res.fattr); | |
2750 | nfs_fattr_init(data->res.dir_fattr); | |
2751 | } | |
2752 | return data; | |
2753 | } | |
2754 | ||
2755 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
2756 | { | |
cccef3b9 AA |
2757 | int status = nfs4_call_sync(NFS_SERVER(dir), &data->msg, |
2758 | &data->arg, &data->res, 1); | |
57dc9a57 TM |
2759 | if (status == 0) { |
2760 | update_changeattr(dir, &data->res.dir_cinfo); | |
2761 | nfs_post_op_update_inode(dir, data->res.dir_fattr); | |
2762 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); | |
2763 | } | |
2764 | return status; | |
2765 | } | |
2766 | ||
2767 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
2768 | { | |
2769 | kfree(data); | |
2770 | } | |
2771 | ||
4f390c15 | 2772 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2773 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 2774 | { |
57dc9a57 TM |
2775 | struct nfs4_createdata *data; |
2776 | int status = -ENAMETOOLONG; | |
1da177e4 | 2777 | |
94a6d753 | 2778 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 2779 | goto out; |
4f390c15 | 2780 | |
57dc9a57 TM |
2781 | status = -ENOMEM; |
2782 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
2783 | if (data == NULL) | |
2784 | goto out; | |
2785 | ||
2786 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
2787 | data->arg.u.symlink.pages = &page; | |
2788 | data->arg.u.symlink.len = len; | |
1da177e4 | 2789 | |
57dc9a57 TM |
2790 | status = nfs4_do_create(dir, dentry, data); |
2791 | ||
2792 | nfs4_free_createdata(data); | |
2793 | out: | |
1da177e4 LT |
2794 | return status; |
2795 | } | |
2796 | ||
4f390c15 | 2797 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2798 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
2799 | { |
2800 | struct nfs4_exception exception = { }; | |
2801 | int err; | |
2802 | do { | |
2803 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
2804 | _nfs4_proc_symlink(dir, dentry, page, |
2805 | len, sattr), | |
1da177e4 LT |
2806 | &exception); |
2807 | } while (exception.retry); | |
2808 | return err; | |
2809 | } | |
2810 | ||
2811 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2812 | struct iattr *sattr) | |
2813 | { | |
57dc9a57 TM |
2814 | struct nfs4_createdata *data; |
2815 | int status = -ENOMEM; | |
1da177e4 | 2816 | |
57dc9a57 TM |
2817 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
2818 | if (data == NULL) | |
2819 | goto out; | |
2820 | ||
2821 | status = nfs4_do_create(dir, dentry, data); | |
2822 | ||
2823 | nfs4_free_createdata(data); | |
2824 | out: | |
1da177e4 LT |
2825 | return status; |
2826 | } | |
2827 | ||
2828 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2829 | struct iattr *sattr) | |
2830 | { | |
2831 | struct nfs4_exception exception = { }; | |
2832 | int err; | |
a8a5da99 AK |
2833 | |
2834 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
2835 | do { |
2836 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2837 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
2838 | &exception); | |
2839 | } while (exception.retry); | |
2840 | return err; | |
2841 | } | |
2842 | ||
2843 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 2844 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
2845 | { |
2846 | struct inode *dir = dentry->d_inode; | |
2847 | struct nfs4_readdir_arg args = { | |
2848 | .fh = NFS_FH(dir), | |
56e4ebf8 | 2849 | .pages = pages, |
1da177e4 LT |
2850 | .pgbase = 0, |
2851 | .count = count, | |
96d25e53 | 2852 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 2853 | .plus = plus, |
1da177e4 LT |
2854 | }; |
2855 | struct nfs4_readdir_res res; | |
2856 | struct rpc_message msg = { | |
2857 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
2858 | .rpc_argp = &args, | |
2859 | .rpc_resp = &res, | |
2860 | .rpc_cred = cred, | |
2861 | }; | |
2862 | int status; | |
2863 | ||
3110ff80 | 2864 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
2865 | dentry->d_parent->d_name.name, |
2866 | dentry->d_name.name, | |
2867 | (unsigned long long)cookie); | |
1da177e4 LT |
2868 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
2869 | res.pgbase = args.pgbase; | |
cccef3b9 | 2870 | status = nfs4_call_sync(NFS_SERVER(dir), &msg, &args, &res, 0); |
ac396128 | 2871 | if (status >= 0) { |
1da177e4 | 2872 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
2873 | status += args.pgbase; |
2874 | } | |
c4812998 TM |
2875 | |
2876 | nfs_invalidate_atime(dir); | |
2877 | ||
3110ff80 | 2878 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
2879 | return status; |
2880 | } | |
2881 | ||
2882 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 2883 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
2884 | { |
2885 | struct nfs4_exception exception = { }; | |
2886 | int err; | |
2887 | do { | |
2888 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
2889 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 2890 | pages, count, plus), |
1da177e4 LT |
2891 | &exception); |
2892 | } while (exception.retry); | |
2893 | return err; | |
2894 | } | |
2895 | ||
2896 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2897 | struct iattr *sattr, dev_t rdev) | |
2898 | { | |
57dc9a57 TM |
2899 | struct nfs4_createdata *data; |
2900 | int mode = sattr->ia_mode; | |
2901 | int status = -ENOMEM; | |
1da177e4 LT |
2902 | |
2903 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
2904 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
57dc9a57 TM |
2905 | |
2906 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); | |
2907 | if (data == NULL) | |
2908 | goto out; | |
2909 | ||
1da177e4 | 2910 | if (S_ISFIFO(mode)) |
57dc9a57 | 2911 | data->arg.ftype = NF4FIFO; |
1da177e4 | 2912 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
2913 | data->arg.ftype = NF4BLK; |
2914 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
2915 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
2916 | } |
2917 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
2918 | data->arg.ftype = NF4CHR; |
2919 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
2920 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 | 2921 | } |
1da177e4 | 2922 | |
57dc9a57 TM |
2923 | status = nfs4_do_create(dir, dentry, data); |
2924 | ||
2925 | nfs4_free_createdata(data); | |
2926 | out: | |
1da177e4 LT |
2927 | return status; |
2928 | } | |
2929 | ||
2930 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2931 | struct iattr *sattr, dev_t rdev) | |
2932 | { | |
2933 | struct nfs4_exception exception = { }; | |
2934 | int err; | |
a8a5da99 AK |
2935 | |
2936 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
2937 | do { |
2938 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2939 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
2940 | &exception); | |
2941 | } while (exception.retry); | |
2942 | return err; | |
2943 | } | |
2944 | ||
2945 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
2946 | struct nfs_fsstat *fsstat) | |
2947 | { | |
2948 | struct nfs4_statfs_arg args = { | |
2949 | .fh = fhandle, | |
2950 | .bitmask = server->attr_bitmask, | |
2951 | }; | |
24ad148a BH |
2952 | struct nfs4_statfs_res res = { |
2953 | .fsstat = fsstat, | |
2954 | }; | |
1da177e4 LT |
2955 | struct rpc_message msg = { |
2956 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
2957 | .rpc_argp = &args, | |
24ad148a | 2958 | .rpc_resp = &res, |
1da177e4 LT |
2959 | }; |
2960 | ||
0e574af1 | 2961 | nfs_fattr_init(fsstat->fattr); |
cccef3b9 | 2962 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2963 | } |
2964 | ||
2965 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
2966 | { | |
2967 | struct nfs4_exception exception = { }; | |
2968 | int err; | |
2969 | do { | |
2970 | err = nfs4_handle_exception(server, | |
2971 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
2972 | &exception); | |
2973 | } while (exception.retry); | |
2974 | return err; | |
2975 | } | |
2976 | ||
2977 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
2978 | struct nfs_fsinfo *fsinfo) | |
2979 | { | |
2980 | struct nfs4_fsinfo_arg args = { | |
2981 | .fh = fhandle, | |
2982 | .bitmask = server->attr_bitmask, | |
2983 | }; | |
3dda5e43 BH |
2984 | struct nfs4_fsinfo_res res = { |
2985 | .fsinfo = fsinfo, | |
2986 | }; | |
1da177e4 LT |
2987 | struct rpc_message msg = { |
2988 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
2989 | .rpc_argp = &args, | |
3dda5e43 | 2990 | .rpc_resp = &res, |
1da177e4 LT |
2991 | }; |
2992 | ||
cccef3b9 | 2993 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2994 | } |
2995 | ||
2996 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
2997 | { | |
2998 | struct nfs4_exception exception = { }; | |
2999 | int err; | |
3000 | ||
3001 | do { | |
3002 | err = nfs4_handle_exception(server, | |
3003 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
3004 | &exception); | |
3005 | } while (exception.retry); | |
3006 | return err; | |
3007 | } | |
3008 | ||
3009 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3010 | { | |
0e574af1 | 3011 | nfs_fattr_init(fsinfo->fattr); |
1da177e4 LT |
3012 | return nfs4_do_fsinfo(server, fhandle, fsinfo); |
3013 | } | |
3014 | ||
3015 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3016 | struct nfs_pathconf *pathconf) | |
3017 | { | |
3018 | struct nfs4_pathconf_arg args = { | |
3019 | .fh = fhandle, | |
3020 | .bitmask = server->attr_bitmask, | |
3021 | }; | |
d45b2989 BH |
3022 | struct nfs4_pathconf_res res = { |
3023 | .pathconf = pathconf, | |
3024 | }; | |
1da177e4 LT |
3025 | struct rpc_message msg = { |
3026 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3027 | .rpc_argp = &args, | |
d45b2989 | 3028 | .rpc_resp = &res, |
1da177e4 LT |
3029 | }; |
3030 | ||
3031 | /* None of the pathconf attributes are mandatory to implement */ | |
3032 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3033 | memset(pathconf, 0, sizeof(*pathconf)); | |
3034 | return 0; | |
3035 | } | |
3036 | ||
0e574af1 | 3037 | nfs_fattr_init(pathconf->fattr); |
cccef3b9 | 3038 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
3039 | } |
3040 | ||
3041 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3042 | struct nfs_pathconf *pathconf) | |
3043 | { | |
3044 | struct nfs4_exception exception = { }; | |
3045 | int err; | |
3046 | ||
3047 | do { | |
3048 | err = nfs4_handle_exception(server, | |
3049 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3050 | &exception); | |
3051 | } while (exception.retry); | |
3052 | return err; | |
3053 | } | |
3054 | ||
ec06c096 | 3055 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3056 | { |
ec06c096 | 3057 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 3058 | |
f11c88af AA |
3059 | dprintk("--> %s\n", __func__); |
3060 | ||
14516c3a TM |
3061 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
3062 | return -EAGAIN; | |
f11c88af | 3063 | |
9e33bed5 | 3064 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
0110ee15 | 3065 | nfs_restart_rpc(task, server->nfs_client); |
ec06c096 | 3066 | return -EAGAIN; |
1da177e4 | 3067 | } |
8850df99 TM |
3068 | |
3069 | nfs_invalidate_atime(data->inode); | |
1da177e4 | 3070 | if (task->tk_status > 0) |
ec06c096 TM |
3071 | renew_lease(server, data->timestamp); |
3072 | return 0; | |
1da177e4 LT |
3073 | } |
3074 | ||
bdc7f021 | 3075 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3076 | { |
1da177e4 | 3077 | data->timestamp = jiffies; |
bdc7f021 | 3078 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
1da177e4 LT |
3079 | } |
3080 | ||
788e7a89 | 3081 | static int nfs4_write_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; | |
def6ed7e | 3087 | |
9e33bed5 | 3088 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
0110ee15 | 3089 | nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client); |
788e7a89 | 3090 | return -EAGAIN; |
1da177e4 | 3091 | } |
4f9838c7 | 3092 | if (task->tk_status >= 0) { |
1da177e4 | 3093 | renew_lease(NFS_SERVER(inode), data->timestamp); |
70ca8852 | 3094 | nfs_post_op_update_inode_force_wcc(inode, data->res.fattr); |
4f9838c7 | 3095 | } |
788e7a89 | 3096 | return 0; |
1da177e4 LT |
3097 | } |
3098 | ||
bdc7f021 | 3099 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3100 | { |
bdc7f021 TM |
3101 | struct nfs_server *server = NFS_SERVER(data->inode); |
3102 | ||
a65318bf | 3103 | data->args.bitmask = server->cache_consistency_bitmask; |
4f9838c7 | 3104 | data->res.server = server; |
1da177e4 LT |
3105 | data->timestamp = jiffies; |
3106 | ||
bdc7f021 | 3107 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
1da177e4 LT |
3108 | } |
3109 | ||
788e7a89 | 3110 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3111 | { |
1da177e4 LT |
3112 | struct inode *inode = data->inode; |
3113 | ||
14516c3a TM |
3114 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
3115 | return -EAGAIN; | |
3116 | ||
9e33bed5 | 3117 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
0110ee15 | 3118 | nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client); |
788e7a89 | 3119 | return -EAGAIN; |
1da177e4 | 3120 | } |
9e08a3c5 | 3121 | nfs_refresh_inode(inode, data->res.fattr); |
788e7a89 | 3122 | return 0; |
1da177e4 LT |
3123 | } |
3124 | ||
bdc7f021 | 3125 | static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3126 | { |
788e7a89 | 3127 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 3128 | |
a65318bf | 3129 | data->args.bitmask = server->cache_consistency_bitmask; |
4f9838c7 | 3130 | data->res.server = server; |
bdc7f021 | 3131 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
1da177e4 LT |
3132 | } |
3133 | ||
9bc4e3ca CL |
3134 | struct nfs4_renewdata { |
3135 | struct nfs_client *client; | |
3136 | unsigned long timestamp; | |
3137 | }; | |
3138 | ||
1da177e4 LT |
3139 | /* |
3140 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3141 | * standalone procedure for queueing an asynchronous RENEW. | |
3142 | */ | |
9bc4e3ca | 3143 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3144 | { |
9bc4e3ca CL |
3145 | struct nfs4_renewdata *data = calldata; |
3146 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3147 | |
0851de06 AB |
3148 | if (atomic_read(&clp->cl_count) > 1) |
3149 | nfs4_schedule_state_renewal(clp); | |
3150 | nfs_put_client(clp); | |
9bc4e3ca | 3151 | kfree(data); |
dc96aef9 AB |
3152 | } |
3153 | ||
9bc4e3ca | 3154 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3155 | { |
9bc4e3ca CL |
3156 | struct nfs4_renewdata *data = calldata; |
3157 | struct nfs_client *clp = data->client; | |
3158 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3159 | |
3160 | if (task->tk_status < 0) { | |
95baa25c TM |
3161 | /* Unless we're shutting down, schedule state recovery! */ |
3162 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) != 0) | |
3163 | nfs4_schedule_state_recovery(clp); | |
1da177e4 LT |
3164 | return; |
3165 | } | |
452e9352 | 3166 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3167 | } |
3168 | ||
963d8fe5 TM |
3169 | static const struct rpc_call_ops nfs4_renew_ops = { |
3170 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3171 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3172 | }; |
3173 | ||
adfa6f98 | 3174 | int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3175 | { |
3176 | struct rpc_message msg = { | |
3177 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3178 | .rpc_argp = clp, | |
b4454fe1 | 3179 | .rpc_cred = cred, |
1da177e4 | 3180 | }; |
9bc4e3ca | 3181 | struct nfs4_renewdata *data; |
1da177e4 | 3182 | |
0851de06 AB |
3183 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3184 | return -EIO; | |
9bc4e3ca CL |
3185 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
3186 | if (data == NULL) | |
3187 | return -ENOMEM; | |
3188 | data->client = clp; | |
3189 | data->timestamp = jiffies; | |
1da177e4 | 3190 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3191 | &nfs4_renew_ops, data); |
1da177e4 LT |
3192 | } |
3193 | ||
adfa6f98 | 3194 | int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3195 | { |
3196 | struct rpc_message msg = { | |
3197 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3198 | .rpc_argp = clp, | |
b4454fe1 | 3199 | .rpc_cred = cred, |
1da177e4 LT |
3200 | }; |
3201 | unsigned long now = jiffies; | |
3202 | int status; | |
3203 | ||
3204 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3205 | if (status < 0) | |
3206 | return status; | |
452e9352 | 3207 | do_renew_lease(clp, now); |
1da177e4 LT |
3208 | return 0; |
3209 | } | |
3210 | ||
aa1870af BF |
3211 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3212 | { | |
3213 | return (server->caps & NFS_CAP_ACLS) | |
3214 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3215 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3216 | } | |
3217 | ||
3218 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
3219 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
3220 | * the stack. | |
3221 | */ | |
3222 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
3223 | ||
3224 | static void buf_to_pages(const void *buf, size_t buflen, | |
3225 | struct page **pages, unsigned int *pgbase) | |
3226 | { | |
3227 | const void *p = buf; | |
3228 | ||
3229 | *pgbase = offset_in_page(buf); | |
3230 | p -= *pgbase; | |
3231 | while (p < buf + buflen) { | |
3232 | *(pages++) = virt_to_page(p); | |
3233 | p += PAGE_CACHE_SIZE; | |
3234 | } | |
3235 | } | |
3236 | ||
e50a1c2e BF |
3237 | struct nfs4_cached_acl { |
3238 | int cached; | |
3239 | size_t len; | |
3e9d4154 | 3240 | char data[0]; |
e50a1c2e BF |
3241 | }; |
3242 | ||
3243 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3244 | { | |
3245 | struct nfs_inode *nfsi = NFS_I(inode); | |
3246 | ||
3247 | spin_lock(&inode->i_lock); | |
3248 | kfree(nfsi->nfs4_acl); | |
3249 | nfsi->nfs4_acl = acl; | |
3250 | spin_unlock(&inode->i_lock); | |
3251 | } | |
3252 | ||
3253 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3254 | { | |
3255 | nfs4_set_cached_acl(inode, NULL); | |
3256 | } | |
3257 | ||
3258 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3259 | { | |
3260 | struct nfs_inode *nfsi = NFS_I(inode); | |
3261 | struct nfs4_cached_acl *acl; | |
3262 | int ret = -ENOENT; | |
3263 | ||
3264 | spin_lock(&inode->i_lock); | |
3265 | acl = nfsi->nfs4_acl; | |
3266 | if (acl == NULL) | |
3267 | goto out; | |
3268 | if (buf == NULL) /* user is just asking for length */ | |
3269 | goto out_len; | |
3270 | if (acl->cached == 0) | |
3271 | goto out; | |
3272 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3273 | if (acl->len > buflen) | |
3274 | goto out; | |
3275 | memcpy(buf, acl->data, acl->len); | |
3276 | out_len: | |
3277 | ret = acl->len; | |
3278 | out: | |
3279 | spin_unlock(&inode->i_lock); | |
3280 | return ret; | |
3281 | } | |
3282 | ||
3283 | static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len) | |
3284 | { | |
3285 | struct nfs4_cached_acl *acl; | |
3286 | ||
3287 | if (buf && acl_len <= PAGE_SIZE) { | |
3288 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); | |
3289 | if (acl == NULL) | |
3290 | goto out; | |
3291 | acl->cached = 1; | |
3292 | memcpy(acl->data, buf, acl_len); | |
3293 | } else { | |
3294 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3295 | if (acl == NULL) | |
3296 | goto out; | |
3297 | acl->cached = 0; | |
3298 | } | |
3299 | acl->len = acl_len; | |
3300 | out: | |
3301 | nfs4_set_cached_acl(inode, acl); | |
3302 | } | |
3303 | ||
16b4289c | 3304 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3305 | { |
aa1870af BF |
3306 | struct page *pages[NFS4ACL_MAXPAGES]; |
3307 | struct nfs_getaclargs args = { | |
3308 | .fh = NFS_FH(inode), | |
3309 | .acl_pages = pages, | |
3310 | .acl_len = buflen, | |
3311 | }; | |
663c79b3 BH |
3312 | struct nfs_getaclres res = { |
3313 | .acl_len = buflen, | |
3314 | }; | |
e50a1c2e | 3315 | void *resp_buf; |
aa1870af BF |
3316 | struct rpc_message msg = { |
3317 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3318 | .rpc_argp = &args, | |
663c79b3 | 3319 | .rpc_resp = &res, |
aa1870af | 3320 | }; |
e50a1c2e | 3321 | struct page *localpage = NULL; |
aa1870af BF |
3322 | int ret; |
3323 | ||
e50a1c2e BF |
3324 | if (buflen < PAGE_SIZE) { |
3325 | /* As long as we're doing a round trip to the server anyway, | |
3326 | * let's be prepared for a page of acl data. */ | |
3327 | localpage = alloc_page(GFP_KERNEL); | |
3328 | resp_buf = page_address(localpage); | |
3329 | if (localpage == NULL) | |
3330 | return -ENOMEM; | |
3331 | args.acl_pages[0] = localpage; | |
3332 | args.acl_pgbase = 0; | |
663c79b3 | 3333 | args.acl_len = PAGE_SIZE; |
e50a1c2e BF |
3334 | } else { |
3335 | resp_buf = buf; | |
3336 | buf_to_pages(buf, buflen, args.acl_pages, &args.acl_pgbase); | |
3337 | } | |
cccef3b9 | 3338 | ret = nfs4_call_sync(NFS_SERVER(inode), &msg, &args, &res, 0); |
e50a1c2e BF |
3339 | if (ret) |
3340 | goto out_free; | |
663c79b3 BH |
3341 | if (res.acl_len > args.acl_len) |
3342 | nfs4_write_cached_acl(inode, NULL, res.acl_len); | |
e50a1c2e | 3343 | else |
663c79b3 | 3344 | nfs4_write_cached_acl(inode, resp_buf, res.acl_len); |
e50a1c2e BF |
3345 | if (buf) { |
3346 | ret = -ERANGE; | |
663c79b3 | 3347 | if (res.acl_len > buflen) |
e50a1c2e BF |
3348 | goto out_free; |
3349 | if (localpage) | |
663c79b3 | 3350 | memcpy(buf, resp_buf, res.acl_len); |
e50a1c2e | 3351 | } |
663c79b3 | 3352 | ret = res.acl_len; |
e50a1c2e BF |
3353 | out_free: |
3354 | if (localpage) | |
3355 | __free_page(localpage); | |
aa1870af BF |
3356 | return ret; |
3357 | } | |
3358 | ||
16b4289c TM |
3359 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3360 | { | |
3361 | struct nfs4_exception exception = { }; | |
3362 | ssize_t ret; | |
3363 | do { | |
3364 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3365 | if (ret >= 0) | |
3366 | break; | |
3367 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3368 | } while (exception.retry); | |
3369 | return ret; | |
3370 | } | |
3371 | ||
e50a1c2e BF |
3372 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3373 | { | |
3374 | struct nfs_server *server = NFS_SERVER(inode); | |
3375 | int ret; | |
3376 | ||
3377 | if (!nfs4_server_supports_acls(server)) | |
3378 | return -EOPNOTSUPP; | |
3379 | ret = nfs_revalidate_inode(server, inode); | |
3380 | if (ret < 0) | |
3381 | return ret; | |
08a22b39 AK |
3382 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
3383 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
3384 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
3385 | if (ret != -ENOENT) | |
3386 | return ret; | |
3387 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3388 | } | |
3389 | ||
16b4289c | 3390 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3391 | { |
3392 | struct nfs_server *server = NFS_SERVER(inode); | |
3393 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3394 | struct nfs_setaclargs arg = { | |
3395 | .fh = NFS_FH(inode), | |
3396 | .acl_pages = pages, | |
3397 | .acl_len = buflen, | |
3398 | }; | |
73c403a9 | 3399 | struct nfs_setaclres res; |
4b580ee3 BF |
3400 | struct rpc_message msg = { |
3401 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3402 | .rpc_argp = &arg, | |
73c403a9 | 3403 | .rpc_resp = &res, |
4b580ee3 BF |
3404 | }; |
3405 | int ret; | |
3406 | ||
3407 | if (!nfs4_server_supports_acls(server)) | |
3408 | return -EOPNOTSUPP; | |
642ac549 | 3409 | nfs_inode_return_delegation(inode); |
4b580ee3 | 3410 | buf_to_pages(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
cccef3b9 | 3411 | ret = nfs4_call_sync(server, &msg, &arg, &res, 1); |
08a22b39 AK |
3412 | /* |
3413 | * Acl update can result in inode attribute update. | |
3414 | * so mark the attribute cache invalid. | |
3415 | */ | |
3416 | spin_lock(&inode->i_lock); | |
3417 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
3418 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
3419 | nfs_access_zap_cache(inode); |
3420 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3421 | return ret; |
3422 | } | |
3423 | ||
16b4289c TM |
3424 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3425 | { | |
3426 | struct nfs4_exception exception = { }; | |
3427 | int err; | |
3428 | do { | |
3429 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3430 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3431 | &exception); | |
3432 | } while (exception.retry); | |
3433 | return err; | |
3434 | } | |
3435 | ||
1da177e4 | 3436 | static int |
aa5190d0 | 3437 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 3438 | { |
aa5190d0 TM |
3439 | struct nfs_client *clp = server->nfs_client; |
3440 | ||
3441 | if (task->tk_status >= 0) | |
1da177e4 LT |
3442 | return 0; |
3443 | switch(task->tk_status) { | |
9e33bed5 TM |
3444 | case -NFS4ERR_ADMIN_REVOKED: |
3445 | case -NFS4ERR_BAD_STATEID: | |
3446 | case -NFS4ERR_OPENMODE: | |
3447 | if (state == NULL) | |
3448 | break; | |
3449 | nfs4_state_mark_reclaim_nograce(clp, state); | |
a2c0b9e2 | 3450 | goto do_state_recovery; |
1da177e4 | 3451 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 3452 | case -NFS4ERR_STALE_CLIENTID: |
1da177e4 | 3453 | case -NFS4ERR_EXPIRED: |
a2c0b9e2 | 3454 | goto do_state_recovery; |
4745e315 AA |
3455 | #if defined(CONFIG_NFS_V4_1) |
3456 | case -NFS4ERR_BADSESSION: | |
3457 | case -NFS4ERR_BADSLOT: | |
3458 | case -NFS4ERR_BAD_HIGH_SLOT: | |
3459 | case -NFS4ERR_DEADSESSION: | |
3460 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
3461 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
3462 | case -NFS4ERR_SEQ_MISORDERED: | |
3463 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
3464 | task->tk_status); | |
0b9e2d41 | 3465 | nfs4_schedule_state_recovery(clp); |
4745e315 AA |
3466 | task->tk_status = 0; |
3467 | return -EAGAIN; | |
3468 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 3469 | case -NFS4ERR_DELAY: |
aa5190d0 | 3470 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 3471 | case -NFS4ERR_GRACE: |
2c643488 | 3472 | case -EKEYEXPIRED: |
1da177e4 LT |
3473 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
3474 | task->tk_status = 0; | |
3475 | return -EAGAIN; | |
3476 | case -NFS4ERR_OLD_STATEID: | |
3477 | task->tk_status = 0; | |
3478 | return -EAGAIN; | |
3479 | } | |
3480 | task->tk_status = nfs4_map_errors(task->tk_status); | |
3481 | return 0; | |
a2c0b9e2 TM |
3482 | do_state_recovery: |
3483 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); | |
3484 | nfs4_schedule_state_recovery(clp); | |
3485 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) | |
3486 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
3487 | task->tk_status = 0; | |
3488 | return -EAGAIN; | |
1da177e4 LT |
3489 | } |
3490 | ||
bb8b27e5 TM |
3491 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
3492 | unsigned short port, struct rpc_cred *cred, | |
3493 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
3494 | { |
3495 | nfs4_verifier sc_verifier; | |
3496 | struct nfs4_setclientid setclientid = { | |
3497 | .sc_verifier = &sc_verifier, | |
3498 | .sc_prog = program, | |
f4eecd5d | 3499 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
3500 | }; |
3501 | struct rpc_message msg = { | |
3502 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
3503 | .rpc_argp = &setclientid, | |
bb8b27e5 | 3504 | .rpc_resp = res, |
286d7d6a | 3505 | .rpc_cred = cred, |
1da177e4 | 3506 | }; |
bc4785cd | 3507 | __be32 *p; |
1da177e4 LT |
3508 | int loop = 0; |
3509 | int status; | |
3510 | ||
bc4785cd | 3511 | p = (__be32*)sc_verifier.data; |
1da177e4 LT |
3512 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); |
3513 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
3514 | ||
3515 | for(;;) { | |
3516 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, | |
69dd716c | 3517 | sizeof(setclientid.sc_name), "%s/%s %s %s %u", |
d4d3c507 CL |
3518 | clp->cl_ipaddr, |
3519 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3520 | RPC_DISPLAY_ADDR), | |
69dd716c TM |
3521 | rpc_peeraddr2str(clp->cl_rpcclient, |
3522 | RPC_DISPLAY_PROTO), | |
78ea323b | 3523 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
1da177e4 LT |
3524 | clp->cl_id_uniquifier); |
3525 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
d4d3c507 CL |
3526 | sizeof(setclientid.sc_netid), |
3527 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3528 | RPC_DISPLAY_NETID)); | |
1da177e4 | 3529 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 3530 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
3531 | clp->cl_ipaddr, port >> 8, port & 255); |
3532 | ||
3533 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3534 | if (status != -NFS4ERR_CLID_INUSE) | |
3535 | break; | |
3536 | if (signalled()) | |
3537 | break; | |
3538 | if (loop++ & 1) | |
611c96c8 | 3539 | ssleep(clp->cl_lease_time / HZ + 1); |
1da177e4 LT |
3540 | else |
3541 | if (++clp->cl_id_uniquifier == 0) | |
3542 | break; | |
3543 | } | |
3544 | return status; | |
3545 | } | |
3546 | ||
bb8b27e5 TM |
3547 | static int _nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
3548 | struct nfs4_setclientid_res *arg, | |
3549 | struct rpc_cred *cred) | |
1da177e4 LT |
3550 | { |
3551 | struct nfs_fsinfo fsinfo; | |
3552 | struct rpc_message msg = { | |
3553 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 3554 | .rpc_argp = arg, |
1da177e4 | 3555 | .rpc_resp = &fsinfo, |
286d7d6a | 3556 | .rpc_cred = cred, |
1da177e4 LT |
3557 | }; |
3558 | unsigned long now; | |
3559 | int status; | |
3560 | ||
3561 | now = jiffies; | |
3562 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3563 | if (status == 0) { | |
3564 | spin_lock(&clp->cl_lock); | |
3565 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
3566 | clp->cl_last_renewal = now; | |
3567 | spin_unlock(&clp->cl_lock); | |
3568 | } | |
3569 | return status; | |
3570 | } | |
3571 | ||
bb8b27e5 TM |
3572 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
3573 | struct nfs4_setclientid_res *arg, | |
3574 | struct rpc_cred *cred) | |
51581f3b | 3575 | { |
77e03677 | 3576 | long timeout = 0; |
51581f3b TM |
3577 | int err; |
3578 | do { | |
bb8b27e5 | 3579 | err = _nfs4_proc_setclientid_confirm(clp, arg, cred); |
51581f3b TM |
3580 | switch (err) { |
3581 | case 0: | |
3582 | return err; | |
3583 | case -NFS4ERR_RESOURCE: | |
3584 | /* The IBM lawyers misread another document! */ | |
3585 | case -NFS4ERR_DELAY: | |
3586 | err = nfs4_delay(clp->cl_rpcclient, &timeout); | |
3587 | } | |
3588 | } while (err == 0); | |
3589 | return err; | |
3590 | } | |
3591 | ||
fe650407 TM |
3592 | struct nfs4_delegreturndata { |
3593 | struct nfs4_delegreturnargs args; | |
fa178f29 | 3594 | struct nfs4_delegreturnres res; |
fe650407 TM |
3595 | struct nfs_fh fh; |
3596 | nfs4_stateid stateid; | |
26e976a8 | 3597 | unsigned long timestamp; |
fa178f29 | 3598 | struct nfs_fattr fattr; |
fe650407 TM |
3599 | int rpc_status; |
3600 | }; | |
3601 | ||
fe650407 TM |
3602 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
3603 | { | |
3604 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 3605 | |
14516c3a TM |
3606 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
3607 | return; | |
938e1010 | 3608 | |
79708861 RL |
3609 | switch (task->tk_status) { |
3610 | case -NFS4ERR_STALE_STATEID: | |
3611 | case -NFS4ERR_EXPIRED: | |
3612 | case 0: | |
fa178f29 | 3613 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
3614 | break; |
3615 | default: | |
3616 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
3617 | -EAGAIN) { | |
3618 | nfs_restart_rpc(task, data->res.server->nfs_client); | |
3619 | return; | |
3620 | } | |
3621 | } | |
3622 | data->rpc_status = task->tk_status; | |
fe650407 TM |
3623 | } |
3624 | ||
3625 | static void nfs4_delegreturn_release(void *calldata) | |
3626 | { | |
fe650407 TM |
3627 | kfree(calldata); |
3628 | } | |
3629 | ||
938e1010 AA |
3630 | #if defined(CONFIG_NFS_V4_1) |
3631 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
3632 | { | |
3633 | struct nfs4_delegreturndata *d_data; | |
3634 | ||
3635 | d_data = (struct nfs4_delegreturndata *)data; | |
3636 | ||
035168ab | 3637 | if (nfs4_setup_sequence(d_data->res.server, |
938e1010 AA |
3638 | &d_data->args.seq_args, |
3639 | &d_data->res.seq_res, 1, task)) | |
3640 | return; | |
3641 | rpc_call_start(task); | |
3642 | } | |
3643 | #endif /* CONFIG_NFS_V4_1 */ | |
3644 | ||
c8d149f3 | 3645 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
3646 | #if defined(CONFIG_NFS_V4_1) |
3647 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
3648 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
3649 | .rpc_call_done = nfs4_delegreturn_done, |
3650 | .rpc_release = nfs4_delegreturn_release, | |
3651 | }; | |
3652 | ||
e6f81075 | 3653 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
3654 | { |
3655 | struct nfs4_delegreturndata *data; | |
fa178f29 | 3656 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 3657 | struct rpc_task *task; |
5138fde0 TM |
3658 | struct rpc_message msg = { |
3659 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
3660 | .rpc_cred = cred, | |
3661 | }; | |
c970aa85 TM |
3662 | struct rpc_task_setup task_setup_data = { |
3663 | .rpc_client = server->client, | |
5138fde0 | 3664 | .rpc_message = &msg, |
c970aa85 TM |
3665 | .callback_ops = &nfs4_delegreturn_ops, |
3666 | .flags = RPC_TASK_ASYNC, | |
3667 | }; | |
e6f81075 | 3668 | int status = 0; |
fe650407 | 3669 | |
8535b2be | 3670 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
3671 | if (data == NULL) |
3672 | return -ENOMEM; | |
3673 | data->args.fhandle = &data->fh; | |
3674 | data->args.stateid = &data->stateid; | |
fa178f29 | 3675 | data->args.bitmask = server->attr_bitmask; |
fe650407 TM |
3676 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
3677 | memcpy(&data->stateid, stateid, sizeof(data->stateid)); | |
fa178f29 TM |
3678 | data->res.fattr = &data->fattr; |
3679 | data->res.server = server; | |
5138fde0 | 3680 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 3681 | data->timestamp = jiffies; |
fe650407 TM |
3682 | data->rpc_status = 0; |
3683 | ||
c970aa85 | 3684 | task_setup_data.callback_data = data; |
1174dd1f TM |
3685 | msg.rpc_argp = &data->args; |
3686 | msg.rpc_resp = &data->res; | |
c970aa85 | 3687 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 3688 | if (IS_ERR(task)) |
fe650407 | 3689 | return PTR_ERR(task); |
e6f81075 TM |
3690 | if (!issync) |
3691 | goto out; | |
fe650407 | 3692 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
3693 | if (status != 0) |
3694 | goto out; | |
3695 | status = data->rpc_status; | |
3696 | if (status != 0) | |
3697 | goto out; | |
3698 | nfs_refresh_inode(inode, &data->fattr); | |
3699 | out: | |
e6b3c4db | 3700 | rpc_put_task(task); |
fe650407 | 3701 | return status; |
1da177e4 LT |
3702 | } |
3703 | ||
e6f81075 | 3704 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
3705 | { |
3706 | struct nfs_server *server = NFS_SERVER(inode); | |
3707 | struct nfs4_exception exception = { }; | |
3708 | int err; | |
3709 | do { | |
e6f81075 | 3710 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
3711 | switch (err) { |
3712 | case -NFS4ERR_STALE_STATEID: | |
3713 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
3714 | case 0: |
3715 | return 0; | |
3716 | } | |
3717 | err = nfs4_handle_exception(server, err, &exception); | |
3718 | } while (exception.retry); | |
3719 | return err; | |
3720 | } | |
3721 | ||
3722 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
3723 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
3724 | ||
3725 | /* | |
3726 | * sleep, with exponential backoff, and retry the LOCK operation. | |
3727 | */ | |
3728 | static unsigned long | |
3729 | nfs4_set_lock_task_retry(unsigned long timeout) | |
3730 | { | |
150030b7 | 3731 | schedule_timeout_killable(timeout); |
1da177e4 LT |
3732 | timeout <<= 1; |
3733 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
3734 | return NFS4_LOCK_MAXTIMEOUT; | |
3735 | return timeout; | |
3736 | } | |
3737 | ||
1da177e4 LT |
3738 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
3739 | { | |
3740 | struct inode *inode = state->inode; | |
3741 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 3742 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 3743 | struct nfs_lockt_args arg = { |
1da177e4 | 3744 | .fh = NFS_FH(inode), |
911d1aaf | 3745 | .fl = request, |
1da177e4 | 3746 | }; |
911d1aaf TM |
3747 | struct nfs_lockt_res res = { |
3748 | .denied = request, | |
1da177e4 LT |
3749 | }; |
3750 | struct rpc_message msg = { | |
3751 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
3752 | .rpc_argp = &arg, | |
3753 | .rpc_resp = &res, | |
3754 | .rpc_cred = state->owner->so_cred, | |
3755 | }; | |
1da177e4 LT |
3756 | struct nfs4_lock_state *lsp; |
3757 | int status; | |
3758 | ||
911d1aaf | 3759 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
3760 | status = nfs4_set_lock_state(state, request); |
3761 | if (status != 0) | |
3762 | goto out; | |
3763 | lsp = request->fl_u.nfs4_fl.owner; | |
9f958ab8 | 3764 | arg.lock_owner.id = lsp->ls_id.id; |
cccef3b9 | 3765 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
911d1aaf TM |
3766 | switch (status) { |
3767 | case 0: | |
3768 | request->fl_type = F_UNLCK; | |
3769 | break; | |
3770 | case -NFS4ERR_DENIED: | |
3771 | status = 0; | |
1da177e4 | 3772 | } |
70cc6487 | 3773 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 3774 | out: |
1da177e4 LT |
3775 | return status; |
3776 | } | |
3777 | ||
3778 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3779 | { | |
3780 | struct nfs4_exception exception = { }; | |
3781 | int err; | |
3782 | ||
3783 | do { | |
3784 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
3785 | _nfs4_proc_getlk(state, cmd, request), | |
3786 | &exception); | |
3787 | } while (exception.retry); | |
3788 | return err; | |
3789 | } | |
3790 | ||
3791 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
3792 | { | |
3793 | int res = 0; | |
3794 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
3795 | case FL_POSIX: | |
3796 | res = posix_lock_file_wait(file, fl); | |
3797 | break; | |
3798 | case FL_FLOCK: | |
3799 | res = flock_lock_file_wait(file, fl); | |
3800 | break; | |
3801 | default: | |
3802 | BUG(); | |
3803 | } | |
1da177e4 LT |
3804 | return res; |
3805 | } | |
3806 | ||
faf5f49c | 3807 | struct nfs4_unlockdata { |
911d1aaf TM |
3808 | struct nfs_locku_args arg; |
3809 | struct nfs_locku_res res; | |
faf5f49c TM |
3810 | struct nfs4_lock_state *lsp; |
3811 | struct nfs_open_context *ctx; | |
911d1aaf TM |
3812 | struct file_lock fl; |
3813 | const struct nfs_server *server; | |
26e976a8 | 3814 | unsigned long timestamp; |
faf5f49c TM |
3815 | }; |
3816 | ||
911d1aaf TM |
3817 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
3818 | struct nfs_open_context *ctx, | |
3819 | struct nfs4_lock_state *lsp, | |
3820 | struct nfs_seqid *seqid) | |
3821 | { | |
3822 | struct nfs4_unlockdata *p; | |
3823 | struct inode *inode = lsp->ls_state->inode; | |
3824 | ||
8535b2be | 3825 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
3826 | if (p == NULL) |
3827 | return NULL; | |
3828 | p->arg.fh = NFS_FH(inode); | |
3829 | p->arg.fl = &p->fl; | |
3830 | p->arg.seqid = seqid; | |
c1d51931 | 3831 | p->res.seqid = seqid; |
911d1aaf TM |
3832 | p->arg.stateid = &lsp->ls_stateid; |
3833 | p->lsp = lsp; | |
3834 | atomic_inc(&lsp->ls_count); | |
3835 | /* Ensure we don't close file until we're done freeing locks! */ | |
3836 | p->ctx = get_nfs_open_context(ctx); | |
3837 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
3838 | p->server = NFS_SERVER(inode); | |
3839 | return p; | |
3840 | } | |
3841 | ||
06f814a3 | 3842 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 3843 | { |
963d8fe5 | 3844 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 3845 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
3846 | nfs4_put_lock_state(calldata->lsp); |
3847 | put_nfs_open_context(calldata->ctx); | |
3848 | kfree(calldata); | |
faf5f49c TM |
3849 | } |
3850 | ||
963d8fe5 | 3851 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 3852 | { |
963d8fe5 | 3853 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 3854 | |
14516c3a TM |
3855 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
3856 | return; | |
faf5f49c TM |
3857 | switch (task->tk_status) { |
3858 | case 0: | |
3859 | memcpy(calldata->lsp->ls_stateid.data, | |
911d1aaf | 3860 | calldata->res.stateid.data, |
faf5f49c | 3861 | sizeof(calldata->lsp->ls_stateid.data)); |
26e976a8 | 3862 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 3863 | break; |
9e33bed5 TM |
3864 | case -NFS4ERR_BAD_STATEID: |
3865 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
3866 | case -NFS4ERR_STALE_STATEID: |
3867 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
3868 | break; |
3869 | default: | |
9e33bed5 | 3870 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
0110ee15 | 3871 | nfs_restart_rpc(task, |
d61e612a | 3872 | calldata->server->nfs_client); |
faf5f49c | 3873 | } |
faf5f49c TM |
3874 | } |
3875 | ||
4ce70ada | 3876 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 3877 | { |
4ce70ada | 3878 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 3879 | |
911d1aaf | 3880 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
3881 | return; |
3882 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
3883 | /* Note: exit _without_ running nfs4_locku_done */ |
3884 | task->tk_action = NULL; | |
faf5f49c TM |
3885 | return; |
3886 | } | |
26e976a8 | 3887 | calldata->timestamp = jiffies; |
035168ab | 3888 | if (nfs4_setup_sequence(calldata->server, |
a893693c AA |
3889 | &calldata->arg.seq_args, |
3890 | &calldata->res.seq_res, 1, task)) | |
3891 | return; | |
5138fde0 | 3892 | rpc_call_start(task); |
faf5f49c TM |
3893 | } |
3894 | ||
963d8fe5 | 3895 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 3896 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 3897 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 3898 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
3899 | }; |
3900 | ||
a5d16a4d TM |
3901 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
3902 | struct nfs_open_context *ctx, | |
3903 | struct nfs4_lock_state *lsp, | |
3904 | struct nfs_seqid *seqid) | |
3905 | { | |
3906 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
3907 | struct rpc_message msg = { |
3908 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
3909 | .rpc_cred = ctx->cred, | |
3910 | }; | |
c970aa85 TM |
3911 | struct rpc_task_setup task_setup_data = { |
3912 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 3913 | .rpc_message = &msg, |
c970aa85 | 3914 | .callback_ops = &nfs4_locku_ops, |
101070ca | 3915 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
3916 | .flags = RPC_TASK_ASYNC, |
3917 | }; | |
a5d16a4d | 3918 | |
137d6aca FF |
3919 | /* Ensure this is an unlock - when canceling a lock, the |
3920 | * canceled lock is passed in, and it won't be an unlock. | |
3921 | */ | |
3922 | fl->fl_type = F_UNLCK; | |
3923 | ||
a5d16a4d TM |
3924 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
3925 | if (data == NULL) { | |
3926 | nfs_free_seqid(seqid); | |
3927 | return ERR_PTR(-ENOMEM); | |
3928 | } | |
3929 | ||
1174dd1f TM |
3930 | msg.rpc_argp = &data->arg; |
3931 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
3932 | task_setup_data.callback_data = data; |
3933 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
3934 | } |
3935 | ||
faf5f49c TM |
3936 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
3937 | { | |
19e03c57 | 3938 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 3939 | struct nfs_seqid *seqid; |
1da177e4 | 3940 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
3941 | struct rpc_task *task; |
3942 | int status = 0; | |
536ff0f8 | 3943 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 3944 | |
8d0a8a9d | 3945 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
3946 | /* Unlock _before_ we do the RPC call */ |
3947 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
3948 | down_read(&nfsi->rwsem); |
3949 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
3950 | up_read(&nfsi->rwsem); | |
9b073574 | 3951 | goto out; |
19e03c57 TM |
3952 | } |
3953 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 3954 | if (status != 0) |
9b073574 TM |
3955 | goto out; |
3956 | /* Is this a delegated lock? */ | |
3957 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
3958 | goto out; | |
8d0a8a9d | 3959 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 3960 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 3961 | status = -ENOMEM; |
911d1aaf | 3962 | if (seqid == NULL) |
9b073574 | 3963 | goto out; |
cd3758e3 | 3964 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
3965 | status = PTR_ERR(task); |
3966 | if (IS_ERR(task)) | |
9b073574 | 3967 | goto out; |
a5d16a4d | 3968 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 3969 | rpc_put_task(task); |
9b073574 | 3970 | out: |
536ff0f8 | 3971 | request->fl_flags = fl_flags; |
1da177e4 LT |
3972 | return status; |
3973 | } | |
3974 | ||
a5d16a4d TM |
3975 | struct nfs4_lockdata { |
3976 | struct nfs_lock_args arg; | |
3977 | struct nfs_lock_res res; | |
3978 | struct nfs4_lock_state *lsp; | |
3979 | struct nfs_open_context *ctx; | |
3980 | struct file_lock fl; | |
26e976a8 | 3981 | unsigned long timestamp; |
a5d16a4d TM |
3982 | int rpc_status; |
3983 | int cancelled; | |
66179efe | 3984 | struct nfs_server *server; |
a5d16a4d TM |
3985 | }; |
3986 | ||
3987 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
3988 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
3989 | gfp_t gfp_mask) | |
1da177e4 | 3990 | { |
a5d16a4d TM |
3991 | struct nfs4_lockdata *p; |
3992 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 3993 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 3994 | |
8535b2be | 3995 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
3996 | if (p == NULL) |
3997 | return NULL; | |
3998 | ||
3999 | p->arg.fh = NFS_FH(inode); | |
4000 | p->arg.fl = &p->fl; | |
8535b2be | 4001 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4002 | if (p->arg.open_seqid == NULL) |
4003 | goto out_free; | |
8535b2be | 4004 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4005 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4006 | goto out_free_seqid; |
a5d16a4d | 4007 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4008 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 4009 | p->arg.lock_owner.id = lsp->ls_id.id; |
c1d51931 | 4010 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4011 | p->lsp = lsp; |
66179efe | 4012 | p->server = server; |
a5d16a4d TM |
4013 | atomic_inc(&lsp->ls_count); |
4014 | p->ctx = get_nfs_open_context(ctx); | |
4015 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4016 | return p; | |
2f74c0a0 TM |
4017 | out_free_seqid: |
4018 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4019 | out_free: |
4020 | kfree(p); | |
4021 | return NULL; | |
4022 | } | |
4023 | ||
4024 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4025 | { | |
4026 | struct nfs4_lockdata *data = calldata; | |
4027 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4028 | |
3110ff80 | 4029 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
4030 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
4031 | return; | |
a5d16a4d TM |
4032 | /* Do we need to do an open_to_lock_owner? */ |
4033 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
4034 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
4035 | return; | |
a5d16a4d TM |
4036 | data->arg.open_stateid = &state->stateid; |
4037 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4038 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4039 | } else |
4040 | data->arg.new_lock_owner = 0; | |
26e976a8 | 4041 | data->timestamp = jiffies; |
035168ab TM |
4042 | if (nfs4_setup_sequence(data->server, |
4043 | &data->arg.seq_args, | |
66179efe AA |
4044 | &data->res.seq_res, 1, task)) |
4045 | return; | |
5138fde0 | 4046 | rpc_call_start(task); |
3110ff80 | 4047 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
a5d16a4d TM |
4048 | } |
4049 | ||
b257957e AB |
4050 | static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata) |
4051 | { | |
4052 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
4053 | nfs4_lock_prepare(task, calldata); | |
4054 | } | |
4055 | ||
a5d16a4d TM |
4056 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4057 | { | |
4058 | struct nfs4_lockdata *data = calldata; | |
4059 | ||
3110ff80 | 4060 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4061 | |
14516c3a TM |
4062 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4063 | return; | |
66179efe | 4064 | |
a5d16a4d | 4065 | data->rpc_status = task->tk_status; |
a5d16a4d | 4066 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4067 | if (data->rpc_status == 0) |
4068 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4069 | else | |
4070 | goto out; | |
4071 | } | |
4072 | if (data->rpc_status == 0) { | |
4073 | memcpy(data->lsp->ls_stateid.data, data->res.stateid.data, | |
4074 | sizeof(data->lsp->ls_stateid.data)); | |
4075 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; | |
88be9f99 | 4076 | renew_lease(NFS_SERVER(data->ctx->path.dentry->d_inode), data->timestamp); |
a5d16a4d | 4077 | } |
a5d16a4d | 4078 | out: |
3110ff80 | 4079 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4080 | } |
4081 | ||
4082 | static void nfs4_lock_release(void *calldata) | |
4083 | { | |
4084 | struct nfs4_lockdata *data = calldata; | |
4085 | ||
3110ff80 | 4086 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4087 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4088 | if (data->cancelled != 0) { |
4089 | struct rpc_task *task; | |
4090 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4091 | data->arg.lock_seqid); | |
4092 | if (!IS_ERR(task)) | |
e6b3c4db | 4093 | rpc_put_task(task); |
3110ff80 | 4094 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4095 | } else |
4096 | nfs_free_seqid(data->arg.lock_seqid); | |
4097 | nfs4_put_lock_state(data->lsp); | |
4098 | put_nfs_open_context(data->ctx); | |
4099 | kfree(data); | |
3110ff80 | 4100 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4101 | } |
4102 | ||
4103 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4104 | .rpc_call_prepare = nfs4_lock_prepare, | |
4105 | .rpc_call_done = nfs4_lock_done, | |
4106 | .rpc_release = nfs4_lock_release, | |
4107 | }; | |
4108 | ||
b257957e AB |
4109 | static const struct rpc_call_ops nfs4_recover_lock_ops = { |
4110 | .rpc_call_prepare = nfs4_recover_lock_prepare, | |
4111 | .rpc_call_done = nfs4_lock_done, | |
4112 | .rpc_release = nfs4_lock_release, | |
4113 | }; | |
4114 | ||
2bee72a6 TM |
4115 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4116 | { | |
4117 | struct nfs_client *clp = server->nfs_client; | |
4118 | struct nfs4_state *state = lsp->ls_state; | |
4119 | ||
4120 | switch (error) { | |
4121 | case -NFS4ERR_ADMIN_REVOKED: | |
4122 | case -NFS4ERR_BAD_STATEID: | |
4123 | case -NFS4ERR_EXPIRED: | |
4124 | if (new_lock_owner != 0 || | |
4125 | (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) | |
4126 | nfs4_state_mark_reclaim_nograce(clp, state); | |
4127 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; | |
a2c0b9e2 TM |
4128 | break; |
4129 | case -NFS4ERR_STALE_STATEID: | |
4130 | if (new_lock_owner != 0 || | |
4131 | (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) | |
4132 | nfs4_state_mark_reclaim_reboot(clp, state); | |
4133 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; | |
2bee72a6 TM |
4134 | }; |
4135 | } | |
4136 | ||
afe6c27c | 4137 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4138 | { |
4139 | struct nfs4_lockdata *data; | |
4140 | struct rpc_task *task; | |
5138fde0 TM |
4141 | struct rpc_message msg = { |
4142 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4143 | .rpc_cred = state->owner->so_cred, | |
4144 | }; | |
c970aa85 TM |
4145 | struct rpc_task_setup task_setup_data = { |
4146 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4147 | .rpc_message = &msg, |
c970aa85 | 4148 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4149 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4150 | .flags = RPC_TASK_ASYNC, |
4151 | }; | |
a5d16a4d TM |
4152 | int ret; |
4153 | ||
3110ff80 | 4154 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4155 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4156 | fl->fl_u.nfs4_fl.owner, |
4157 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4158 | if (data == NULL) |
4159 | return -ENOMEM; | |
4160 | if (IS_SETLKW(cmd)) | |
4161 | data->arg.block = 1; | |
b257957e AB |
4162 | if (recovery_type > NFS_LOCK_NEW) { |
4163 | if (recovery_type == NFS_LOCK_RECLAIM) | |
afe6c27c | 4164 | data->arg.reclaim = NFS_LOCK_RECLAIM; |
b257957e AB |
4165 | task_setup_data.callback_ops = &nfs4_recover_lock_ops; |
4166 | } | |
1174dd1f TM |
4167 | msg.rpc_argp = &data->arg; |
4168 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4169 | task_setup_data.callback_data = data; |
4170 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 4171 | if (IS_ERR(task)) |
a5d16a4d | 4172 | return PTR_ERR(task); |
a5d16a4d TM |
4173 | ret = nfs4_wait_for_completion_rpc_task(task); |
4174 | if (ret == 0) { | |
4175 | ret = data->rpc_status; | |
2bee72a6 TM |
4176 | if (ret) |
4177 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4178 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4179 | } else |
4180 | data->cancelled = 1; | |
e6b3c4db | 4181 | rpc_put_task(task); |
3110ff80 | 4182 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4183 | return ret; |
1da177e4 LT |
4184 | } |
4185 | ||
4186 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4187 | { | |
202b50dc TM |
4188 | struct nfs_server *server = NFS_SERVER(state->inode); |
4189 | struct nfs4_exception exception = { }; | |
4190 | int err; | |
4191 | ||
4192 | do { | |
42a2d13e TM |
4193 | /* Cache the lock if possible... */ |
4194 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4195 | return 0; | |
afe6c27c | 4196 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4197 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4198 | break; |
4199 | nfs4_handle_exception(server, err, &exception); | |
4200 | } while (exception.retry); | |
4201 | return err; | |
1da177e4 LT |
4202 | } |
4203 | ||
4204 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4205 | { | |
202b50dc TM |
4206 | struct nfs_server *server = NFS_SERVER(state->inode); |
4207 | struct nfs4_exception exception = { }; | |
4208 | int err; | |
4209 | ||
6bfc93ef TM |
4210 | err = nfs4_set_lock_state(state, request); |
4211 | if (err != 0) | |
4212 | return err; | |
202b50dc | 4213 | do { |
42a2d13e TM |
4214 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4215 | return 0; | |
afe6c27c | 4216 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4217 | switch (err) { |
4218 | default: | |
4219 | goto out; | |
4220 | case -NFS4ERR_GRACE: | |
4221 | case -NFS4ERR_DELAY: | |
4222 | nfs4_handle_exception(server, err, &exception); | |
4223 | err = 0; | |
4224 | } | |
202b50dc | 4225 | } while (exception.retry); |
a9ed2e25 | 4226 | out: |
202b50dc | 4227 | return err; |
1da177e4 LT |
4228 | } |
4229 | ||
4230 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4231 | { | |
19e03c57 | 4232 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4233 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 4234 | int status = -ENOLCK; |
1da177e4 | 4235 | |
8e469ebd TM |
4236 | if ((fl_flags & FL_POSIX) && |
4237 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
4238 | goto out; | |
6bfc93ef | 4239 | /* Is this a delegated open? */ |
6bfc93ef TM |
4240 | status = nfs4_set_lock_state(state, request); |
4241 | if (status != 0) | |
4242 | goto out; | |
01c3b861 TM |
4243 | request->fl_flags |= FL_ACCESS; |
4244 | status = do_vfs_lock(request->fl_file, request); | |
4245 | if (status < 0) | |
4246 | goto out; | |
19e03c57 | 4247 | down_read(&nfsi->rwsem); |
01c3b861 | 4248 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4249 | /* Yes: cache locks! */ |
01c3b861 | 4250 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4251 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4252 | status = do_vfs_lock(request->fl_file, request); | |
4253 | goto out_unlock; | |
01c3b861 | 4254 | } |
afe6c27c | 4255 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 4256 | if (status != 0) |
01c3b861 | 4257 | goto out_unlock; |
6bfc93ef | 4258 | /* Note: we always want to sleep here! */ |
01c3b861 | 4259 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4260 | if (do_vfs_lock(request->fl_file, request) < 0) |
3110ff80 | 4261 | printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __func__); |
01c3b861 | 4262 | out_unlock: |
19e03c57 | 4263 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4264 | out: |
4265 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4266 | return status; |
4267 | } | |
4268 | ||
4269 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4270 | { | |
4271 | struct nfs4_exception exception = { }; | |
4272 | int err; | |
4273 | ||
4274 | do { | |
965b5d67 TM |
4275 | err = _nfs4_proc_setlk(state, cmd, request); |
4276 | if (err == -NFS4ERR_DENIED) | |
4277 | err = -EAGAIN; | |
1da177e4 | 4278 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4279 | err, &exception); |
1da177e4 LT |
4280 | } while (exception.retry); |
4281 | return err; | |
4282 | } | |
4283 | ||
4284 | static int | |
4285 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
4286 | { | |
4287 | struct nfs_open_context *ctx; | |
4288 | struct nfs4_state *state; | |
4289 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
4290 | int status; | |
4291 | ||
4292 | /* verify open state */ | |
cd3758e3 | 4293 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
4294 | state = ctx->state; |
4295 | ||
4296 | if (request->fl_start < 0 || request->fl_end < 0) | |
4297 | return -EINVAL; | |
4298 | ||
d953126a TM |
4299 | if (IS_GETLK(cmd)) { |
4300 | if (state != NULL) | |
4301 | return nfs4_proc_getlk(state, F_GETLK, request); | |
4302 | return 0; | |
4303 | } | |
1da177e4 LT |
4304 | |
4305 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
4306 | return -EINVAL; | |
4307 | ||
d953126a TM |
4308 | if (request->fl_type == F_UNLCK) { |
4309 | if (state != NULL) | |
4310 | return nfs4_proc_unlck(state, cmd, request); | |
4311 | return 0; | |
4312 | } | |
1da177e4 | 4313 | |
d953126a TM |
4314 | if (state == NULL) |
4315 | return -ENOLCK; | |
1da177e4 LT |
4316 | do { |
4317 | status = nfs4_proc_setlk(state, cmd, request); | |
4318 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
4319 | break; | |
4320 | timeout = nfs4_set_lock_task_retry(timeout); | |
4321 | status = -ERESTARTSYS; | |
4322 | if (signalled()) | |
4323 | break; | |
4324 | } while(status < 0); | |
1da177e4 LT |
4325 | return status; |
4326 | } | |
4327 | ||
888e694c TM |
4328 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
4329 | { | |
4330 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4331 | struct nfs4_exception exception = { }; | |
4332 | int err; | |
4333 | ||
4334 | err = nfs4_set_lock_state(state, fl); | |
4335 | if (err != 0) | |
4336 | goto out; | |
4337 | do { | |
afe6c27c | 4338 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
4339 | switch (err) { |
4340 | default: | |
4341 | printk(KERN_ERR "%s: unhandled error %d.\n", | |
4342 | __func__, err); | |
4343 | case 0: | |
965b5d67 | 4344 | case -ESTALE: |
d5122201 TM |
4345 | goto out; |
4346 | case -NFS4ERR_EXPIRED: | |
4347 | case -NFS4ERR_STALE_CLIENTID: | |
965b5d67 | 4348 | case -NFS4ERR_STALE_STATEID: |
74e7bb73 RL |
4349 | case -NFS4ERR_BADSESSION: |
4350 | case -NFS4ERR_BADSLOT: | |
4351 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4352 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4353 | case -NFS4ERR_DEADSESSION: | |
d5122201 TM |
4354 | nfs4_schedule_state_recovery(server->nfs_client); |
4355 | goto out; | |
965b5d67 TM |
4356 | case -ERESTARTSYS: |
4357 | /* | |
4358 | * The show must go on: exit, but mark the | |
4359 | * stateid as needing recovery. | |
4360 | */ | |
4361 | case -NFS4ERR_ADMIN_REVOKED: | |
4362 | case -NFS4ERR_BAD_STATEID: | |
4363 | case -NFS4ERR_OPENMODE: | |
4364 | nfs4_state_mark_reclaim_nograce(server->nfs_client, state); | |
4365 | err = 0; | |
4366 | goto out; | |
168667c4 TM |
4367 | case -EKEYEXPIRED: |
4368 | /* | |
4369 | * User RPCSEC_GSS context has expired. | |
4370 | * We cannot recover this stateid now, so | |
4371 | * skip it and allow recovery thread to | |
4372 | * proceed. | |
4373 | */ | |
4374 | err = 0; | |
4375 | goto out; | |
965b5d67 TM |
4376 | case -ENOMEM: |
4377 | case -NFS4ERR_DENIED: | |
4378 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
4379 | err = 0; | |
4380 | goto out; | |
d5122201 TM |
4381 | case -NFS4ERR_DELAY: |
4382 | break; | |
4383 | } | |
888e694c TM |
4384 | err = nfs4_handle_exception(server, err, &exception); |
4385 | } while (exception.retry); | |
4386 | out: | |
4387 | return err; | |
4388 | } | |
6b3b5496 | 4389 | |
d3c7b7cc TM |
4390 | static void nfs4_release_lockowner_release(void *calldata) |
4391 | { | |
4392 | kfree(calldata); | |
4393 | } | |
4394 | ||
4395 | const struct rpc_call_ops nfs4_release_lockowner_ops = { | |
4396 | .rpc_release = nfs4_release_lockowner_release, | |
4397 | }; | |
4398 | ||
4399 | void nfs4_release_lockowner(const struct nfs4_lock_state *lsp) | |
4400 | { | |
4401 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
4402 | struct nfs_release_lockowner_args *args; | |
4403 | struct rpc_message msg = { | |
4404 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
4405 | }; | |
4406 | ||
4407 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
4408 | return; | |
4409 | args = kmalloc(sizeof(*args), GFP_NOFS); | |
4410 | if (!args) | |
4411 | return; | |
4412 | args->lock_owner.clientid = server->nfs_client->cl_clientid; | |
4413 | args->lock_owner.id = lsp->ls_id.id; | |
4414 | msg.rpc_argp = args; | |
4415 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, args); | |
4416 | } | |
4417 | ||
aa1870af BF |
4418 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
4419 | ||
64c2ce8b AK |
4420 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
4421 | const void *buf, size_t buflen, | |
4422 | int flags, int type) | |
6b3b5496 | 4423 | { |
64c2ce8b AK |
4424 | if (strcmp(key, "") != 0) |
4425 | return -EINVAL; | |
4b580ee3 | 4426 | |
64c2ce8b | 4427 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4428 | } |
4429 | ||
64c2ce8b AK |
4430 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
4431 | void *buf, size_t buflen, int type) | |
6b3b5496 | 4432 | { |
64c2ce8b AK |
4433 | if (strcmp(key, "") != 0) |
4434 | return -EINVAL; | |
aa1870af | 4435 | |
64c2ce8b | 4436 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4437 | } |
4438 | ||
64c2ce8b AK |
4439 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
4440 | size_t list_len, const char *name, | |
4441 | size_t name_len, int type) | |
6b3b5496 | 4442 | { |
64c2ce8b | 4443 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 4444 | |
096455a2 BF |
4445 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
4446 | return 0; | |
64c2ce8b AK |
4447 | |
4448 | if (list && len <= list_len) | |
4449 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 4450 | return len; |
6b3b5496 BF |
4451 | } |
4452 | ||
69aaaae1 TM |
4453 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
4454 | { | |
4455 | if (!((fattr->valid & NFS_ATTR_FATTR_FILEID) && | |
4456 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
4457 | (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL))) | |
4458 | return; | |
4459 | ||
4460 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
4461 | NFS_ATTR_FATTR_NLINK; | |
4462 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; | |
4463 | fattr->nlink = 2; | |
4464 | } | |
4465 | ||
56659e99 | 4466 | int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, |
7aaa0b3b | 4467 | struct nfs4_fs_locations *fs_locations, struct page *page) |
683b57b4 TM |
4468 | { |
4469 | struct nfs_server *server = NFS_SERVER(dir); | |
4470 | u32 bitmask[2] = { | |
361e624f MN |
4471 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
4472 | [1] = FATTR4_WORD1_MOUNTED_ON_FILEID, | |
683b57b4 TM |
4473 | }; |
4474 | struct nfs4_fs_locations_arg args = { | |
4475 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 4476 | .name = name, |
683b57b4 TM |
4477 | .page = page, |
4478 | .bitmask = bitmask, | |
4479 | }; | |
22958463 BH |
4480 | struct nfs4_fs_locations_res res = { |
4481 | .fs_locations = fs_locations, | |
4482 | }; | |
683b57b4 TM |
4483 | struct rpc_message msg = { |
4484 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
4485 | .rpc_argp = &args, | |
22958463 | 4486 | .rpc_resp = &res, |
683b57b4 TM |
4487 | }; |
4488 | int status; | |
4489 | ||
3110ff80 | 4490 | dprintk("%s: start\n", __func__); |
c228fd3a | 4491 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 4492 | fs_locations->server = server; |
830b8e33 | 4493 | fs_locations->nlocations = 0; |
cccef3b9 | 4494 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
69aaaae1 | 4495 | nfs_fixup_referral_attributes(&fs_locations->fattr); |
3110ff80 | 4496 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
4497 | return status; |
4498 | } | |
4499 | ||
557134a3 | 4500 | #ifdef CONFIG_NFS_V4_1 |
99fe60d0 BH |
4501 | /* |
4502 | * nfs4_proc_exchange_id() | |
4503 | * | |
4504 | * Since the clientid has expired, all compounds using sessions | |
4505 | * associated with the stale clientid will be returning | |
4506 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
4507 | * be in some phase of session reset. | |
4508 | */ | |
4d643d1d | 4509 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
4510 | { |
4511 | nfs4_verifier verifier; | |
4512 | struct nfs41_exchange_id_args args = { | |
4513 | .client = clp, | |
4514 | .flags = clp->cl_exchange_flags, | |
4515 | }; | |
4516 | struct nfs41_exchange_id_res res = { | |
4517 | .client = clp, | |
4518 | }; | |
4519 | int status; | |
4520 | struct rpc_message msg = { | |
4521 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
4522 | .rpc_argp = &args, | |
4523 | .rpc_resp = &res, | |
4524 | .rpc_cred = cred, | |
4525 | }; | |
4526 | __be32 *p; | |
4527 | ||
4528 | dprintk("--> %s\n", __func__); | |
4529 | BUG_ON(clp == NULL); | |
a7b72103 | 4530 | |
7b183d0d AB |
4531 | /* Remove server-only flags */ |
4532 | args.flags &= ~EXCHGID4_FLAG_CONFIRMED_R; | |
4533 | ||
99fe60d0 BH |
4534 | p = (u32 *)verifier.data; |
4535 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); | |
4536 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
4537 | args.verifier = &verifier; | |
4538 | ||
4539 | while (1) { | |
4540 | args.id_len = scnprintf(args.id, sizeof(args.id), | |
4541 | "%s/%s %u", | |
4542 | clp->cl_ipaddr, | |
4543 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4544 | RPC_DISPLAY_ADDR), | |
4545 | clp->cl_id_uniquifier); | |
4546 | ||
4547 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
4548 | ||
180b62a3 | 4549 | if (status != -NFS4ERR_CLID_INUSE) |
99fe60d0 BH |
4550 | break; |
4551 | ||
4552 | if (signalled()) | |
4553 | break; | |
4554 | ||
4555 | if (++clp->cl_id_uniquifier == 0) | |
4556 | break; | |
4557 | } | |
4558 | ||
4559 | dprintk("<-- %s status= %d\n", __func__, status); | |
4560 | return status; | |
4561 | } | |
4562 | ||
2050f0cc AA |
4563 | struct nfs4_get_lease_time_data { |
4564 | struct nfs4_get_lease_time_args *args; | |
4565 | struct nfs4_get_lease_time_res *res; | |
4566 | struct nfs_client *clp; | |
4567 | }; | |
4568 | ||
4569 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
4570 | void *calldata) | |
4571 | { | |
4572 | int ret; | |
4573 | struct nfs4_get_lease_time_data *data = | |
4574 | (struct nfs4_get_lease_time_data *)calldata; | |
4575 | ||
4576 | dprintk("--> %s\n", __func__); | |
689cf5c1 | 4577 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
2050f0cc AA |
4578 | /* just setup sequence, do not trigger session recovery |
4579 | since we're invoked within one */ | |
4580 | ret = nfs41_setup_sequence(data->clp->cl_session, | |
689cf5c1 AB |
4581 | &data->args->la_seq_args, |
4582 | &data->res->lr_seq_res, 0, task); | |
2050f0cc AA |
4583 | |
4584 | BUG_ON(ret == -EAGAIN); | |
4585 | rpc_call_start(task); | |
4586 | dprintk("<-- %s\n", __func__); | |
4587 | } | |
4588 | ||
4589 | /* | |
4590 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
4591 | * from sequence operation or clientid errors. | |
4592 | */ | |
4593 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
4594 | { | |
4595 | struct nfs4_get_lease_time_data *data = | |
4596 | (struct nfs4_get_lease_time_data *)calldata; | |
4597 | ||
4598 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
4599 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
4600 | return; | |
2050f0cc AA |
4601 | switch (task->tk_status) { |
4602 | case -NFS4ERR_DELAY: | |
4603 | case -NFS4ERR_GRACE: | |
4604 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
4605 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
4606 | task->tk_status = 0; | |
0110ee15 | 4607 | nfs_restart_rpc(task, data->clp); |
2050f0cc AA |
4608 | return; |
4609 | } | |
2050f0cc AA |
4610 | dprintk("<-- %s\n", __func__); |
4611 | } | |
4612 | ||
4613 | struct rpc_call_ops nfs4_get_lease_time_ops = { | |
4614 | .rpc_call_prepare = nfs4_get_lease_time_prepare, | |
4615 | .rpc_call_done = nfs4_get_lease_time_done, | |
4616 | }; | |
4617 | ||
4618 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
4619 | { | |
4620 | struct rpc_task *task; | |
4621 | struct nfs4_get_lease_time_args args; | |
4622 | struct nfs4_get_lease_time_res res = { | |
4623 | .lr_fsinfo = fsinfo, | |
4624 | }; | |
4625 | struct nfs4_get_lease_time_data data = { | |
4626 | .args = &args, | |
4627 | .res = &res, | |
4628 | .clp = clp, | |
4629 | }; | |
4630 | struct rpc_message msg = { | |
4631 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
4632 | .rpc_argp = &args, | |
4633 | .rpc_resp = &res, | |
4634 | }; | |
4635 | struct rpc_task_setup task_setup = { | |
4636 | .rpc_client = clp->cl_rpcclient, | |
4637 | .rpc_message = &msg, | |
4638 | .callback_ops = &nfs4_get_lease_time_ops, | |
4639 | .callback_data = &data | |
4640 | }; | |
4641 | int status; | |
4642 | ||
2050f0cc AA |
4643 | dprintk("--> %s\n", __func__); |
4644 | task = rpc_run_task(&task_setup); | |
4645 | ||
4646 | if (IS_ERR(task)) | |
4647 | status = PTR_ERR(task); | |
4648 | else { | |
4649 | status = task->tk_status; | |
4650 | rpc_put_task(task); | |
4651 | } | |
4652 | dprintk("<-- %s return %d\n", __func__, status); | |
4653 | ||
4654 | return status; | |
4655 | } | |
4656 | ||
b73dafa7 RL |
4657 | /* |
4658 | * Reset a slot table | |
4659 | */ | |
104aeba4 AA |
4660 | static int nfs4_reset_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs, |
4661 | int ivalue) | |
ac72b7b3 | 4662 | { |
104aeba4 | 4663 | struct nfs4_slot *new = NULL; |
b73dafa7 | 4664 | int i; |
ac72b7b3 AA |
4665 | int ret = 0; |
4666 | ||
104aeba4 AA |
4667 | dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__, |
4668 | max_reqs, tbl->max_slots); | |
ac72b7b3 | 4669 | |
104aeba4 AA |
4670 | /* Does the newly negotiated max_reqs match the existing slot table? */ |
4671 | if (max_reqs != tbl->max_slots) { | |
4672 | ret = -ENOMEM; | |
4673 | new = kmalloc(max_reqs * sizeof(struct nfs4_slot), | |
8535b2be | 4674 | GFP_NOFS); |
104aeba4 AA |
4675 | if (!new) |
4676 | goto out; | |
4677 | ret = 0; | |
4678 | kfree(tbl->slots); | |
ac72b7b3 AA |
4679 | } |
4680 | spin_lock(&tbl->slot_tbl_lock); | |
104aeba4 AA |
4681 | if (new) { |
4682 | tbl->slots = new; | |
4683 | tbl->max_slots = max_reqs; | |
4684 | } | |
4685 | for (i = 0; i < tbl->max_slots; ++i) | |
b73dafa7 | 4686 | tbl->slots[i].seq_nr = ivalue; |
ac72b7b3 AA |
4687 | spin_unlock(&tbl->slot_tbl_lock); |
4688 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
4689 | tbl, tbl->slots, tbl->max_slots); | |
4690 | out: | |
4691 | dprintk("<-- %s: return %d\n", __func__, ret); | |
4692 | return ret; | |
4693 | } | |
4694 | ||
b73dafa7 RL |
4695 | /* |
4696 | * Reset the forechannel and backchannel slot tables | |
4697 | */ | |
4698 | static int nfs4_reset_slot_tables(struct nfs4_session *session) | |
4699 | { | |
4700 | int status; | |
4701 | ||
4702 | status = nfs4_reset_slot_table(&session->fc_slot_table, | |
104aeba4 | 4703 | session->fc_attrs.max_reqs, 1); |
f8625a6a RL |
4704 | if (status) |
4705 | return status; | |
4706 | ||
4707 | status = nfs4_reset_slot_table(&session->bc_slot_table, | |
104aeba4 | 4708 | session->bc_attrs.max_reqs, 0); |
b73dafa7 RL |
4709 | return status; |
4710 | } | |
4711 | ||
f8625a6a RL |
4712 | /* Destroy the slot table */ |
4713 | static void nfs4_destroy_slot_tables(struct nfs4_session *session) | |
4714 | { | |
4715 | if (session->fc_slot_table.slots != NULL) { | |
4716 | kfree(session->fc_slot_table.slots); | |
4717 | session->fc_slot_table.slots = NULL; | |
4718 | } | |
4719 | if (session->bc_slot_table.slots != NULL) { | |
4720 | kfree(session->bc_slot_table.slots); | |
4721 | session->bc_slot_table.slots = NULL; | |
4722 | } | |
4723 | return; | |
4724 | } | |
4725 | ||
fc931582 AA |
4726 | /* |
4727 | * Initialize slot table | |
4728 | */ | |
050047ce RL |
4729 | static int nfs4_init_slot_table(struct nfs4_slot_table *tbl, |
4730 | int max_slots, int ivalue) | |
fc931582 | 4731 | { |
fc931582 AA |
4732 | struct nfs4_slot *slot; |
4733 | int ret = -ENOMEM; | |
4734 | ||
4735 | BUG_ON(max_slots > NFS4_MAX_SLOT_TABLE); | |
4736 | ||
050047ce | 4737 | dprintk("--> %s: max_reqs=%u\n", __func__, max_slots); |
fc931582 | 4738 | |
8535b2be | 4739 | slot = kcalloc(max_slots, sizeof(struct nfs4_slot), GFP_NOFS); |
fc931582 AA |
4740 | if (!slot) |
4741 | goto out; | |
fc931582 AA |
4742 | ret = 0; |
4743 | ||
4744 | spin_lock(&tbl->slot_tbl_lock); | |
fc931582 AA |
4745 | tbl->max_slots = max_slots; |
4746 | tbl->slots = slot; | |
4747 | tbl->highest_used_slotid = -1; /* no slot is currently used */ | |
4748 | spin_unlock(&tbl->slot_tbl_lock); | |
4749 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
4750 | tbl, tbl->slots, tbl->max_slots); | |
4751 | out: | |
4752 | dprintk("<-- %s: return %d\n", __func__, ret); | |
4753 | return ret; | |
fc931582 AA |
4754 | } |
4755 | ||
050047ce RL |
4756 | /* |
4757 | * Initialize the forechannel and backchannel tables | |
4758 | */ | |
4759 | static int nfs4_init_slot_tables(struct nfs4_session *session) | |
4760 | { | |
f26468fb TM |
4761 | struct nfs4_slot_table *tbl; |
4762 | int status = 0; | |
050047ce | 4763 | |
f26468fb TM |
4764 | tbl = &session->fc_slot_table; |
4765 | if (tbl->slots == NULL) { | |
4766 | status = nfs4_init_slot_table(tbl, | |
4767 | session->fc_attrs.max_reqs, 1); | |
4768 | if (status) | |
4769 | return status; | |
4770 | } | |
050047ce | 4771 | |
f26468fb TM |
4772 | tbl = &session->bc_slot_table; |
4773 | if (tbl->slots == NULL) { | |
4774 | status = nfs4_init_slot_table(tbl, | |
4775 | session->bc_attrs.max_reqs, 0); | |
4776 | if (status) | |
4777 | nfs4_destroy_slot_tables(session); | |
4778 | } | |
f8625a6a RL |
4779 | |
4780 | return status; | |
557134a3 AA |
4781 | } |
4782 | ||
4783 | struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) | |
4784 | { | |
4785 | struct nfs4_session *session; | |
4786 | struct nfs4_slot_table *tbl; | |
4787 | ||
8535b2be | 4788 | session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); |
557134a3 AA |
4789 | if (!session) |
4790 | return NULL; | |
76db6d95 | 4791 | |
557134a3 | 4792 | tbl = &session->fc_slot_table; |
9dfdf404 | 4793 | tbl->highest_used_slotid = -1; |
557134a3 | 4794 | spin_lock_init(&tbl->slot_tbl_lock); |
689cf5c1 | 4795 | rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); |
42acd021 | 4796 | init_completion(&tbl->complete); |
f8625a6a RL |
4797 | |
4798 | tbl = &session->bc_slot_table; | |
9dfdf404 | 4799 | tbl->highest_used_slotid = -1; |
f8625a6a RL |
4800 | spin_lock_init(&tbl->slot_tbl_lock); |
4801 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); | |
42acd021 | 4802 | init_completion(&tbl->complete); |
f8625a6a | 4803 | |
1055d76d TM |
4804 | session->session_state = 1<<NFS4_SESSION_INITING; |
4805 | ||
557134a3 AA |
4806 | session->clp = clp; |
4807 | return session; | |
4808 | } | |
4809 | ||
4810 | void nfs4_destroy_session(struct nfs4_session *session) | |
4811 | { | |
5a0ffe54 AA |
4812 | nfs4_proc_destroy_session(session); |
4813 | dprintk("%s Destroy backchannel for xprt %p\n", | |
4814 | __func__, session->clp->cl_rpcclient->cl_xprt); | |
4815 | xprt_destroy_backchannel(session->clp->cl_rpcclient->cl_xprt, | |
4816 | NFS41_BC_MIN_CALLBACKS); | |
f8625a6a | 4817 | nfs4_destroy_slot_tables(session); |
557134a3 AA |
4818 | kfree(session); |
4819 | } | |
4820 | ||
fc931582 AA |
4821 | /* |
4822 | * Initialize the values to be used by the client in CREATE_SESSION | |
4823 | * If nfs4_init_session set the fore channel request and response sizes, | |
4824 | * use them. | |
4825 | * | |
4826 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
4827 | * always set csa_cachethis to FALSE because the current implementation | |
4828 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
4829 | */ | |
4830 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
4831 | { | |
4832 | struct nfs4_session *session = args->client->cl_session; | |
4833 | unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz, | |
4834 | mxresp_sz = session->fc_attrs.max_resp_sz; | |
4835 | ||
4836 | if (mxrqst_sz == 0) | |
4837 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
4838 | if (mxresp_sz == 0) | |
4839 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
4840 | /* Fore channel attributes */ | |
4841 | args->fc_attrs.headerpadsz = 0; | |
4842 | args->fc_attrs.max_rqst_sz = mxrqst_sz; | |
4843 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 AA |
4844 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
4845 | args->fc_attrs.max_reqs = session->clp->cl_rpcclient->cl_xprt->max_reqs; | |
4846 | ||
4847 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 4848 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
4849 | __func__, |
4850 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 4851 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
4852 | |
4853 | /* Back channel attributes */ | |
4854 | args->bc_attrs.headerpadsz = 0; | |
4855 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; | |
4856 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
4857 | args->bc_attrs.max_resp_sz_cached = 0; | |
4858 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
4859 | args->bc_attrs.max_reqs = 1; | |
4860 | ||
4861 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
4862 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
4863 | __func__, | |
4864 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
4865 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
4866 | args->bc_attrs.max_reqs); | |
4867 | } | |
4868 | ||
43c2e885 | 4869 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 4870 | { |
43c2e885 BF |
4871 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
4872 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
4873 | ||
4874 | if (rcvd->headerpadsz > sent->headerpadsz) | |
4875 | return -EINVAL; | |
4876 | if (rcvd->max_resp_sz > sent->max_resp_sz) | |
4877 | return -EINVAL; | |
4878 | /* | |
4879 | * Our requested max_ops is the minimum we need; we're not | |
4880 | * prepared to break up compounds into smaller pieces than that. | |
4881 | * So, no point even trying to continue if the server won't | |
4882 | * cooperate: | |
4883 | */ | |
4884 | if (rcvd->max_ops < sent->max_ops) | |
4885 | return -EINVAL; | |
4886 | if (rcvd->max_reqs == 0) | |
4887 | return -EINVAL; | |
4888 | return 0; | |
8d35301d AA |
4889 | } |
4890 | ||
43c2e885 BF |
4891 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
4892 | { | |
4893 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
4894 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 4895 | |
43c2e885 BF |
4896 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
4897 | return -EINVAL; | |
4898 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
4899 | return -EINVAL; | |
4900 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
4901 | return -EINVAL; | |
4902 | /* These would render the backchannel useless: */ | |
4903 | if (rcvd->max_ops == 0) | |
4904 | return -EINVAL; | |
4905 | if (rcvd->max_reqs == 0) | |
4906 | return -EINVAL; | |
4907 | return 0; | |
4908 | } | |
8d35301d | 4909 | |
8d35301d AA |
4910 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
4911 | struct nfs4_session *session) | |
4912 | { | |
43c2e885 | 4913 | int ret; |
8d35301d | 4914 | |
43c2e885 BF |
4915 | ret = nfs4_verify_fore_channel_attrs(args, session); |
4916 | if (ret) | |
4917 | return ret; | |
4918 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
4919 | } |
4920 | ||
fc931582 AA |
4921 | static int _nfs4_proc_create_session(struct nfs_client *clp) |
4922 | { | |
4923 | struct nfs4_session *session = clp->cl_session; | |
4924 | struct nfs41_create_session_args args = { | |
4925 | .client = clp, | |
4926 | .cb_program = NFS4_CALLBACK, | |
4927 | }; | |
4928 | struct nfs41_create_session_res res = { | |
4929 | .client = clp, | |
4930 | }; | |
4931 | struct rpc_message msg = { | |
4932 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
4933 | .rpc_argp = &args, | |
4934 | .rpc_resp = &res, | |
4935 | }; | |
4936 | int status; | |
4937 | ||
4938 | nfs4_init_channel_attrs(&args); | |
0f91421e | 4939 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 AA |
4940 | |
4941 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, 0); | |
4942 | ||
8d35301d AA |
4943 | if (!status) |
4944 | /* Verify the session's negotiated channel_attrs values */ | |
4945 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
4946 | if (!status) { |
4947 | /* Increment the clientid slot sequence id */ | |
4948 | clp->cl_seqid++; | |
4949 | } | |
4950 | ||
4951 | return status; | |
4952 | } | |
4953 | ||
4954 | /* | |
4955 | * Issues a CREATE_SESSION operation to the server. | |
4956 | * It is the responsibility of the caller to verify the session is | |
4957 | * expired before calling this routine. | |
4958 | */ | |
f26468fb | 4959 | int nfs4_proc_create_session(struct nfs_client *clp) |
fc931582 AA |
4960 | { |
4961 | int status; | |
4962 | unsigned *ptr; | |
fc931582 AA |
4963 | struct nfs4_session *session = clp->cl_session; |
4964 | ||
4965 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
4966 | ||
4967 | status = _nfs4_proc_create_session(clp); | |
4968 | if (status) | |
4969 | goto out; | |
4970 | ||
f26468fb TM |
4971 | /* Init and reset the fore channel */ |
4972 | status = nfs4_init_slot_tables(session); | |
4973 | dprintk("slot table initialization returned %d\n", status); | |
4974 | if (status) | |
4975 | goto out; | |
4976 | status = nfs4_reset_slot_tables(session); | |
4977 | dprintk("slot table reset returned %d\n", status); | |
fc931582 AA |
4978 | if (status) |
4979 | goto out; | |
4980 | ||
4981 | ptr = (unsigned *)&session->sess_id.data[0]; | |
4982 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
4983 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
4984 | out: |
4985 | dprintk("<-- %s\n", __func__); | |
4986 | return status; | |
4987 | } | |
4988 | ||
0f3e66c6 AA |
4989 | /* |
4990 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
4991 | * The caller must serialize access to this routine. | |
4992 | */ | |
4993 | int nfs4_proc_destroy_session(struct nfs4_session *session) | |
4994 | { | |
4995 | int status = 0; | |
4996 | struct rpc_message msg; | |
4997 | ||
4998 | dprintk("--> nfs4_proc_destroy_session\n"); | |
4999 | ||
5000 | /* session is still being setup */ | |
5001 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5002 | return status; | |
5003 | ||
5004 | msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION]; | |
5005 | msg.rpc_argp = session; | |
5006 | msg.rpc_resp = NULL; | |
5007 | msg.rpc_cred = NULL; | |
5008 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, 0); | |
5009 | ||
5010 | if (status) | |
5011 | printk(KERN_WARNING | |
5012 | "Got error %d from the server on DESTROY_SESSION. " | |
5013 | "Session has been destroyed regardless...\n", status); | |
5014 | ||
5015 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5016 | return status; | |
5017 | } | |
5018 | ||
fccba804 TM |
5019 | int nfs4_init_session(struct nfs_server *server) |
5020 | { | |
5021 | struct nfs_client *clp = server->nfs_client; | |
2449ea2e | 5022 | struct nfs4_session *session; |
68bf05ef | 5023 | unsigned int rsize, wsize; |
fccba804 TM |
5024 | int ret; |
5025 | ||
5026 | if (!nfs4_has_session(clp)) | |
5027 | return 0; | |
5028 | ||
1055d76d TM |
5029 | session = clp->cl_session; |
5030 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5031 | return 0; | |
5032 | ||
68bf05ef AA |
5033 | rsize = server->rsize; |
5034 | if (rsize == 0) | |
5035 | rsize = NFS_MAX_FILE_IO_SIZE; | |
5036 | wsize = server->wsize; | |
5037 | if (wsize == 0) | |
5038 | wsize = NFS_MAX_FILE_IO_SIZE; | |
5039 | ||
68bf05ef AA |
5040 | session->fc_attrs.max_rqst_sz = wsize + nfs41_maxwrite_overhead; |
5041 | session->fc_attrs.max_resp_sz = rsize + nfs41_maxread_overhead; | |
2449ea2e | 5042 | |
fccba804 TM |
5043 | ret = nfs4_recover_expired_lease(server); |
5044 | if (!ret) | |
5045 | ret = nfs4_check_client_ready(clp); | |
5046 | return ret; | |
5047 | } | |
5048 | ||
fc01cea9 AA |
5049 | /* |
5050 | * Renew the cl_session lease. | |
5051 | */ | |
d5f8d3fe TM |
5052 | struct nfs4_sequence_data { |
5053 | struct nfs_client *clp; | |
5054 | struct nfs4_sequence_args args; | |
5055 | struct nfs4_sequence_res res; | |
5056 | }; | |
5057 | ||
dc96aef9 AB |
5058 | static void nfs41_sequence_release(void *data) |
5059 | { | |
d5f8d3fe TM |
5060 | struct nfs4_sequence_data *calldata = data; |
5061 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5062 | |
7135840f AB |
5063 | if (atomic_read(&clp->cl_count) > 1) |
5064 | nfs4_schedule_state_renewal(clp); | |
5065 | nfs_put_client(clp); | |
d5f8d3fe | 5066 | kfree(calldata); |
dc96aef9 AB |
5067 | } |
5068 | ||
aa5190d0 TM |
5069 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5070 | { | |
5071 | switch(task->tk_status) { | |
5072 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5073 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5074 | return -EAGAIN; | |
5075 | default: | |
5076 | nfs4_schedule_state_recovery(clp); | |
5077 | } | |
5078 | return 0; | |
5079 | } | |
5080 | ||
dc96aef9 | 5081 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 5082 | { |
d5f8d3fe TM |
5083 | struct nfs4_sequence_data *calldata = data; |
5084 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 5085 | |
14516c3a TM |
5086 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
5087 | return; | |
fc01cea9 AA |
5088 | |
5089 | if (task->tk_status < 0) { | |
5090 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
5091 | if (atomic_read(&clp->cl_count) == 1) |
5092 | goto out; | |
fc01cea9 | 5093 | |
aa5190d0 TM |
5094 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
5095 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
5096 | return; |
5097 | } | |
5098 | } | |
fc01cea9 | 5099 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 5100 | out: |
fc01cea9 AA |
5101 | dprintk("<-- %s\n", __func__); |
5102 | } | |
5103 | ||
5104 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
5105 | { | |
d5f8d3fe TM |
5106 | struct nfs4_sequence_data *calldata = data; |
5107 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
5108 | struct nfs4_sequence_args *args; |
5109 | struct nfs4_sequence_res *res; | |
5110 | ||
fc01cea9 AA |
5111 | args = task->tk_msg.rpc_argp; |
5112 | res = task->tk_msg.rpc_resp; | |
5113 | ||
035168ab | 5114 | if (nfs41_setup_sequence(clp->cl_session, args, res, 0, task)) |
fc01cea9 AA |
5115 | return; |
5116 | rpc_call_start(task); | |
5117 | } | |
5118 | ||
5119 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
5120 | .rpc_call_done = nfs41_sequence_call_done, | |
5121 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 5122 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
5123 | }; |
5124 | ||
71ac6da9 | 5125 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) |
fc01cea9 | 5126 | { |
d5f8d3fe | 5127 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
5128 | struct rpc_message msg = { |
5129 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
5130 | .rpc_cred = cred, | |
5131 | }; | |
71ac6da9 TM |
5132 | struct rpc_task_setup task_setup_data = { |
5133 | .rpc_client = clp->cl_rpcclient, | |
5134 | .rpc_message = &msg, | |
5135 | .callback_ops = &nfs41_sequence_ops, | |
5136 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, | |
5137 | }; | |
fc01cea9 | 5138 | |
7135840f | 5139 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 5140 | return ERR_PTR(-EIO); |
dfb4f309 | 5141 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 5142 | if (calldata == NULL) { |
7135840f | 5143 | nfs_put_client(clp); |
71ac6da9 | 5144 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 5145 | } |
d5f8d3fe TM |
5146 | msg.rpc_argp = &calldata->args; |
5147 | msg.rpc_resp = &calldata->res; | |
5148 | calldata->clp = clp; | |
71ac6da9 | 5149 | task_setup_data.callback_data = calldata; |
fc01cea9 | 5150 | |
71ac6da9 TM |
5151 | return rpc_run_task(&task_setup_data); |
5152 | } | |
5153 | ||
5154 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5155 | { | |
5156 | struct rpc_task *task; | |
5157 | int ret = 0; | |
5158 | ||
5159 | task = _nfs41_proc_sequence(clp, cred); | |
5160 | if (IS_ERR(task)) | |
5161 | ret = PTR_ERR(task); | |
5162 | else | |
5163 | rpc_put_task(task); | |
5164 | dprintk("<-- %s status=%d\n", __func__, ret); | |
5165 | return ret; | |
5166 | } | |
5167 | ||
5168 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5169 | { | |
5170 | struct rpc_task *task; | |
5171 | int ret; | |
5172 | ||
5173 | task = _nfs41_proc_sequence(clp, cred); | |
5174 | if (IS_ERR(task)) { | |
5175 | ret = PTR_ERR(task); | |
5176 | goto out; | |
5177 | } | |
5178 | ret = rpc_wait_for_completion_task(task); | |
5179 | if (!ret) | |
5180 | ret = task->tk_status; | |
5181 | rpc_put_task(task); | |
5182 | out: | |
5183 | dprintk("<-- %s status=%d\n", __func__, ret); | |
5184 | return ret; | |
fc01cea9 AA |
5185 | } |
5186 | ||
fce5c838 RL |
5187 | struct nfs4_reclaim_complete_data { |
5188 | struct nfs_client *clp; | |
5189 | struct nfs41_reclaim_complete_args arg; | |
5190 | struct nfs41_reclaim_complete_res res; | |
5191 | }; | |
5192 | ||
5193 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
5194 | { | |
5195 | struct nfs4_reclaim_complete_data *calldata = data; | |
5196 | ||
b257957e | 5197 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
035168ab TM |
5198 | if (nfs41_setup_sequence(calldata->clp->cl_session, |
5199 | &calldata->arg.seq_args, | |
fce5c838 RL |
5200 | &calldata->res.seq_res, 0, task)) |
5201 | return; | |
5202 | ||
5203 | rpc_call_start(task); | |
5204 | } | |
5205 | ||
aa5190d0 TM |
5206 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5207 | { | |
5208 | switch(task->tk_status) { | |
5209 | case 0: | |
5210 | case -NFS4ERR_COMPLETE_ALREADY: | |
5211 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
5212 | break; | |
5213 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5214 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5215 | return -EAGAIN; | |
5216 | default: | |
5217 | nfs4_schedule_state_recovery(clp); | |
5218 | } | |
5219 | return 0; | |
5220 | } | |
5221 | ||
fce5c838 RL |
5222 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
5223 | { | |
5224 | struct nfs4_reclaim_complete_data *calldata = data; | |
5225 | struct nfs_client *clp = calldata->clp; | |
5226 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
5227 | ||
5228 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5229 | if (!nfs41_sequence_done(task, res)) |
5230 | return; | |
fce5c838 | 5231 | |
aa5190d0 TM |
5232 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
5233 | rpc_restart_call_prepare(task); | |
5234 | return; | |
5235 | } | |
fce5c838 RL |
5236 | dprintk("<-- %s\n", __func__); |
5237 | } | |
5238 | ||
5239 | static void nfs4_free_reclaim_complete_data(void *data) | |
5240 | { | |
5241 | struct nfs4_reclaim_complete_data *calldata = data; | |
5242 | ||
5243 | kfree(calldata); | |
5244 | } | |
5245 | ||
5246 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
5247 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
5248 | .rpc_call_done = nfs4_reclaim_complete_done, | |
5249 | .rpc_release = nfs4_free_reclaim_complete_data, | |
5250 | }; | |
5251 | ||
5252 | /* | |
5253 | * Issue a global reclaim complete. | |
5254 | */ | |
5255 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
5256 | { | |
5257 | struct nfs4_reclaim_complete_data *calldata; | |
5258 | struct rpc_task *task; | |
5259 | struct rpc_message msg = { | |
5260 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
5261 | }; | |
5262 | struct rpc_task_setup task_setup_data = { | |
5263 | .rpc_client = clp->cl_rpcclient, | |
5264 | .rpc_message = &msg, | |
5265 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
5266 | .flags = RPC_TASK_ASYNC, | |
5267 | }; | |
5268 | int status = -ENOMEM; | |
5269 | ||
5270 | dprintk("--> %s\n", __func__); | |
8535b2be | 5271 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
5272 | if (calldata == NULL) |
5273 | goto out; | |
5274 | calldata->clp = clp; | |
5275 | calldata->arg.one_fs = 0; | |
fce5c838 RL |
5276 | |
5277 | msg.rpc_argp = &calldata->arg; | |
5278 | msg.rpc_resp = &calldata->res; | |
5279 | task_setup_data.callback_data = calldata; | |
5280 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 5281 | if (IS_ERR(task)) { |
fce5c838 | 5282 | status = PTR_ERR(task); |
acf82b85 DC |
5283 | goto out; |
5284 | } | |
fce5c838 | 5285 | rpc_put_task(task); |
acf82b85 | 5286 | return 0; |
fce5c838 RL |
5287 | out: |
5288 | dprintk("<-- %s status=%d\n", __func__, status); | |
5289 | return status; | |
5290 | } | |
b1f69b75 AA |
5291 | |
5292 | static void | |
5293 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
5294 | { | |
5295 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 5296 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
b1f69b75 AA |
5297 | |
5298 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
5299 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
5300 | * right now covering the LAYOUTGET we are about to send. | |
5301 | * However, that is not so catastrophic, and there seems | |
5302 | * to be no way to prevent it completely. | |
5303 | */ | |
b1f69b75 AA |
5304 | if (nfs4_setup_sequence(server, &lgp->args.seq_args, |
5305 | &lgp->res.seq_res, 0, task)) | |
5306 | return; | |
cf7d63f1 FI |
5307 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
5308 | NFS_I(lgp->args.inode)->layout, | |
5309 | lgp->args.ctx->state)) { | |
5310 | rpc_exit(task, NFS4_OK); | |
5311 | return; | |
5312 | } | |
b1f69b75 AA |
5313 | rpc_call_start(task); |
5314 | } | |
5315 | ||
5316 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
5317 | { | |
5318 | struct nfs4_layoutget *lgp = calldata; | |
5319 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5320 | ||
5321 | dprintk("--> %s\n", __func__); | |
5322 | ||
5323 | if (!nfs4_sequence_done(task, &lgp->res.seq_res)) | |
5324 | return; | |
5325 | ||
5326 | switch (task->tk_status) { | |
5327 | case 0: | |
5328 | break; | |
5329 | case -NFS4ERR_LAYOUTTRYLATER: | |
5330 | case -NFS4ERR_RECALLCONFLICT: | |
5331 | task->tk_status = -NFS4ERR_DELAY; | |
5332 | /* Fall through */ | |
5333 | default: | |
5334 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
5335 | rpc_restart_call_prepare(task); | |
5336 | return; | |
5337 | } | |
5338 | } | |
b1f69b75 AA |
5339 | dprintk("<-- %s\n", __func__); |
5340 | } | |
5341 | ||
5342 | static void nfs4_layoutget_release(void *calldata) | |
5343 | { | |
5344 | struct nfs4_layoutget *lgp = calldata; | |
5345 | ||
5346 | dprintk("--> %s\n", __func__); | |
b1f69b75 AA |
5347 | if (lgp->res.layout.buf != NULL) |
5348 | free_page((unsigned long) lgp->res.layout.buf); | |
5349 | put_nfs_open_context(lgp->args.ctx); | |
5350 | kfree(calldata); | |
5351 | dprintk("<-- %s\n", __func__); | |
5352 | } | |
5353 | ||
5354 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
5355 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
5356 | .rpc_call_done = nfs4_layoutget_done, | |
5357 | .rpc_release = nfs4_layoutget_release, | |
5358 | }; | |
5359 | ||
5360 | int nfs4_proc_layoutget(struct nfs4_layoutget *lgp) | |
5361 | { | |
5362 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5363 | struct rpc_task *task; | |
5364 | struct rpc_message msg = { | |
5365 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
5366 | .rpc_argp = &lgp->args, | |
5367 | .rpc_resp = &lgp->res, | |
5368 | }; | |
5369 | struct rpc_task_setup task_setup_data = { | |
5370 | .rpc_client = server->client, | |
5371 | .rpc_message = &msg, | |
5372 | .callback_ops = &nfs4_layoutget_call_ops, | |
5373 | .callback_data = lgp, | |
5374 | .flags = RPC_TASK_ASYNC, | |
5375 | }; | |
5376 | int status = 0; | |
5377 | ||
5378 | dprintk("--> %s\n", __func__); | |
5379 | ||
5380 | lgp->res.layout.buf = (void *)__get_free_page(GFP_NOFS); | |
5381 | if (lgp->res.layout.buf == NULL) { | |
5382 | nfs4_layoutget_release(lgp); | |
5383 | return -ENOMEM; | |
5384 | } | |
5385 | ||
5386 | lgp->res.seq_res.sr_slot = NULL; | |
5387 | task = rpc_run_task(&task_setup_data); | |
5388 | if (IS_ERR(task)) | |
5389 | return PTR_ERR(task); | |
5390 | status = nfs4_wait_for_completion_rpc_task(task); | |
c31663d4 FI |
5391 | if (status == 0) |
5392 | status = task->tk_status; | |
5393 | if (status == 0) | |
5394 | status = pnfs_layout_process(lgp); | |
b1f69b75 AA |
5395 | rpc_put_task(task); |
5396 | dprintk("<-- %s status=%d\n", __func__, status); | |
5397 | return status; | |
5398 | } | |
5399 | ||
5400 | static int | |
5401 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
5402 | { | |
5403 | struct nfs4_getdeviceinfo_args args = { | |
5404 | .pdev = pdev, | |
5405 | }; | |
5406 | struct nfs4_getdeviceinfo_res res = { | |
5407 | .pdev = pdev, | |
5408 | }; | |
5409 | struct rpc_message msg = { | |
5410 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
5411 | .rpc_argp = &args, | |
5412 | .rpc_resp = &res, | |
5413 | }; | |
5414 | int status; | |
5415 | ||
5416 | dprintk("--> %s\n", __func__); | |
5417 | status = nfs4_call_sync(server, &msg, &args, &res, 0); | |
5418 | dprintk("<-- %s status=%d\n", __func__, status); | |
5419 | ||
5420 | return status; | |
5421 | } | |
5422 | ||
5423 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
5424 | { | |
5425 | struct nfs4_exception exception = { }; | |
5426 | int err; | |
5427 | ||
5428 | do { | |
5429 | err = nfs4_handle_exception(server, | |
5430 | _nfs4_proc_getdeviceinfo(server, pdev), | |
5431 | &exception); | |
5432 | } while (exception.retry); | |
5433 | return err; | |
5434 | } | |
5435 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
5436 | ||
557134a3 AA |
5437 | #endif /* CONFIG_NFS_V4_1 */ |
5438 | ||
591d71cb | 5439 | struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 5440 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 5441 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
5442 | .recover_open = nfs4_open_reclaim, |
5443 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 5444 | .establish_clid = nfs4_init_clientid, |
90a16617 | 5445 | .get_clid_cred = nfs4_get_setclientid_cred, |
1da177e4 LT |
5446 | }; |
5447 | ||
591d71cb AA |
5448 | #if defined(CONFIG_NFS_V4_1) |
5449 | struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { | |
5450 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, | |
5451 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
5452 | .recover_open = nfs4_open_reclaim, | |
5453 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 5454 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 5455 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 5456 | .reclaim_complete = nfs41_proc_reclaim_complete, |
591d71cb AA |
5457 | }; |
5458 | #endif /* CONFIG_NFS_V4_1 */ | |
5459 | ||
5460 | struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { | |
5461 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, | |
5462 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
5463 | .recover_open = nfs4_open_expired, | |
5464 | .recover_lock = nfs4_lock_expired, | |
5465 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 5466 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
5467 | }; |
5468 | ||
5469 | #if defined(CONFIG_NFS_V4_1) | |
5470 | struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { | |
7eff03ae | 5471 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 5472 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
1da177e4 LT |
5473 | .recover_open = nfs4_open_expired, |
5474 | .recover_lock = nfs4_lock_expired, | |
4d643d1d | 5475 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 5476 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 5477 | }; |
591d71cb | 5478 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 5479 | |
29fba38b BH |
5480 | struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
5481 | .sched_state_renewal = nfs4_proc_async_renew, | |
a7b72103 | 5482 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 5483 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
5484 | }; |
5485 | ||
5486 | #if defined(CONFIG_NFS_V4_1) | |
5487 | struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { | |
5488 | .sched_state_renewal = nfs41_proc_async_sequence, | |
a7b72103 | 5489 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 5490 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
5491 | }; |
5492 | #endif | |
5493 | ||
97dc1359 TM |
5494 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
5495 | .minor_version = 0, | |
5496 | .call_sync = _nfs4_call_sync, | |
e047a10c | 5497 | .validate_stateid = nfs4_validate_delegation_stateid, |
c48f4f35 TM |
5498 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
5499 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
5500 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
5501 | }; |
5502 | ||
5503 | #if defined(CONFIG_NFS_V4_1) | |
5504 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
5505 | .minor_version = 1, | |
5506 | .call_sync = _nfs4_call_sync_session, | |
e047a10c | 5507 | .validate_stateid = nfs41_validate_delegation_stateid, |
c48f4f35 TM |
5508 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
5509 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
5510 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
5511 | }; |
5512 | #endif | |
5513 | ||
97dc1359 TM |
5514 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
5515 | [0] = &nfs_v4_0_minor_ops, | |
5516 | #if defined(CONFIG_NFS_V4_1) | |
5517 | [1] = &nfs_v4_1_minor_ops, | |
5518 | #endif | |
5519 | }; | |
5520 | ||
92e1d5be | 5521 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
5522 | .permission = nfs_permission, |
5523 | .getattr = nfs_getattr, | |
5524 | .setattr = nfs_setattr, | |
64c2ce8b AK |
5525 | .getxattr = generic_getxattr, |
5526 | .setxattr = generic_setxattr, | |
5527 | .listxattr = generic_listxattr, | |
5528 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
5529 | }; |
5530 | ||
509de811 | 5531 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
5532 | .version = 4, /* protocol version */ |
5533 | .dentry_ops = &nfs4_dentry_operations, | |
5534 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 5535 | .file_inode_ops = &nfs4_file_inode_operations, |
1da177e4 LT |
5536 | .getroot = nfs4_proc_get_root, |
5537 | .getattr = nfs4_proc_getattr, | |
5538 | .setattr = nfs4_proc_setattr, | |
2b3de441 | 5539 | .lookupfh = nfs4_proc_lookupfh, |
1da177e4 LT |
5540 | .lookup = nfs4_proc_lookup, |
5541 | .access = nfs4_proc_access, | |
5542 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
5543 | .create = nfs4_proc_create, |
5544 | .remove = nfs4_proc_remove, | |
5545 | .unlink_setup = nfs4_proc_unlink_setup, | |
5546 | .unlink_done = nfs4_proc_unlink_done, | |
5547 | .rename = nfs4_proc_rename, | |
d3d4152a JL |
5548 | .rename_setup = nfs4_proc_rename_setup, |
5549 | .rename_done = nfs4_proc_rename_done, | |
1da177e4 LT |
5550 | .link = nfs4_proc_link, |
5551 | .symlink = nfs4_proc_symlink, | |
5552 | .mkdir = nfs4_proc_mkdir, | |
5553 | .rmdir = nfs4_proc_remove, | |
5554 | .readdir = nfs4_proc_readdir, | |
5555 | .mknod = nfs4_proc_mknod, | |
5556 | .statfs = nfs4_proc_statfs, | |
5557 | .fsinfo = nfs4_proc_fsinfo, | |
5558 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 5559 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
5560 | .decode_dirent = nfs4_decode_dirent, |
5561 | .read_setup = nfs4_proc_read_setup, | |
ec06c096 | 5562 | .read_done = nfs4_read_done, |
1da177e4 | 5563 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 5564 | .write_done = nfs4_write_done, |
1da177e4 | 5565 | .commit_setup = nfs4_proc_commit_setup, |
788e7a89 | 5566 | .commit_done = nfs4_commit_done, |
1da177e4 | 5567 | .lock = nfs4_proc_lock, |
e50a1c2e | 5568 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 5569 | .close_context = nfs4_close_context, |
2b484297 | 5570 | .open_context = nfs4_atomic_open, |
1da177e4 LT |
5571 | }; |
5572 | ||
64c2ce8b AK |
5573 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
5574 | .prefix = XATTR_NAME_NFSV4_ACL, | |
5575 | .list = nfs4_xattr_list_nfs4_acl, | |
5576 | .get = nfs4_xattr_get_nfs4_acl, | |
5577 | .set = nfs4_xattr_set_nfs4_acl, | |
5578 | }; | |
5579 | ||
5580 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
5581 | &nfs4_xattr_nfs4_acl_handler, | |
5582 | NULL | |
5583 | }; | |
5584 | ||
1da177e4 LT |
5585 | /* |
5586 | * Local variables: | |
5587 | * c-basic-offset: 8 | |
5588 | * End: | |
5589 | */ |