Commit | Line | Data |
---|---|---|
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> | |
42 | #include <linux/sunrpc/clnt.h> | |
43 | #include <linux/nfs.h> | |
44 | #include <linux/nfs4.h> | |
45 | #include <linux/nfs_fs.h> | |
46 | #include <linux/nfs_page.h> | |
1da177e4 | 47 | #include <linux/namei.h> |
02a913a7 | 48 | #include <linux/mount.h> |
99fe60d0 | 49 | #include <linux/module.h> |
5a0ffe54 | 50 | #include <linux/sunrpc/bc_xprt.h> |
1da177e4 | 51 | |
4ce79717 | 52 | #include "nfs4_fs.h" |
1da177e4 | 53 | #include "delegation.h" |
101070ca | 54 | #include "internal.h" |
006ea73e | 55 | #include "iostat.h" |
fc931582 | 56 | #include "callback.h" |
1da177e4 LT |
57 | |
58 | #define NFSDBG_FACILITY NFSDBG_PROC | |
59 | ||
2066fe89 | 60 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
61 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
62 | ||
a78cb57a TM |
63 | #define NFS4_MAX_LOOP_ON_RECOVER (10) |
64 | ||
cdd4e68b | 65 | struct nfs4_opendata; |
864472e9 | 66 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
1da177e4 | 67 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
9e33bed5 | 68 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); |
9936781d TM |
69 | static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr); |
70 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); | |
1da177e4 | 71 | |
1da177e4 | 72 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 73 | static int nfs4_map_errors(int err) |
1da177e4 | 74 | { |
52567b03 TM |
75 | if (err >= -1000) |
76 | return err; | |
77 | switch (err) { | |
78 | case -NFS4ERR_RESOURCE: | |
79 | return -EREMOTEIO; | |
80 | default: | |
1da177e4 | 81 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 82 | __func__, -err); |
52567b03 | 83 | break; |
1da177e4 | 84 | } |
52567b03 | 85 | return -EIO; |
1da177e4 LT |
86 | } |
87 | ||
88 | /* | |
89 | * This is our standard bitmap for GETATTR requests. | |
90 | */ | |
91 | const u32 nfs4_fattr_bitmap[2] = { | |
92 | FATTR4_WORD0_TYPE | |
93 | | FATTR4_WORD0_CHANGE | |
94 | | FATTR4_WORD0_SIZE | |
95 | | FATTR4_WORD0_FSID | |
96 | | FATTR4_WORD0_FILEID, | |
97 | FATTR4_WORD1_MODE | |
98 | | FATTR4_WORD1_NUMLINKS | |
99 | | FATTR4_WORD1_OWNER | |
100 | | FATTR4_WORD1_OWNER_GROUP | |
101 | | FATTR4_WORD1_RAWDEV | |
102 | | FATTR4_WORD1_SPACE_USED | |
103 | | FATTR4_WORD1_TIME_ACCESS | |
104 | | FATTR4_WORD1_TIME_METADATA | |
105 | | FATTR4_WORD1_TIME_MODIFY | |
106 | }; | |
107 | ||
108 | const u32 nfs4_statfs_bitmap[2] = { | |
109 | FATTR4_WORD0_FILES_AVAIL | |
110 | | FATTR4_WORD0_FILES_FREE | |
111 | | FATTR4_WORD0_FILES_TOTAL, | |
112 | FATTR4_WORD1_SPACE_AVAIL | |
113 | | FATTR4_WORD1_SPACE_FREE | |
114 | | FATTR4_WORD1_SPACE_TOTAL | |
115 | }; | |
116 | ||
4ce79717 | 117 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
118 | FATTR4_WORD0_MAXLINK |
119 | | FATTR4_WORD0_MAXNAME, | |
120 | 0 | |
121 | }; | |
122 | ||
123 | const u32 nfs4_fsinfo_bitmap[2] = { FATTR4_WORD0_MAXFILESIZE | |
124 | | FATTR4_WORD0_MAXREAD | |
125 | | FATTR4_WORD0_MAXWRITE | |
126 | | FATTR4_WORD0_LEASE_TIME, | |
127 | 0 | |
128 | }; | |
129 | ||
830b8e33 MN |
130 | const u32 nfs4_fs_locations_bitmap[2] = { |
131 | FATTR4_WORD0_TYPE | |
132 | | FATTR4_WORD0_CHANGE | |
133 | | FATTR4_WORD0_SIZE | |
134 | | FATTR4_WORD0_FSID | |
135 | | FATTR4_WORD0_FILEID | |
136 | | FATTR4_WORD0_FS_LOCATIONS, | |
137 | FATTR4_WORD1_MODE | |
138 | | FATTR4_WORD1_NUMLINKS | |
139 | | FATTR4_WORD1_OWNER | |
140 | | FATTR4_WORD1_OWNER_GROUP | |
141 | | FATTR4_WORD1_RAWDEV | |
142 | | FATTR4_WORD1_SPACE_USED | |
143 | | FATTR4_WORD1_TIME_ACCESS | |
144 | | FATTR4_WORD1_TIME_METADATA | |
145 | | FATTR4_WORD1_TIME_MODIFY | |
146 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
147 | }; | |
148 | ||
bc4785cd | 149 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
150 | struct nfs4_readdir_arg *readdir) |
151 | { | |
0dbb4c67 | 152 | __be32 *start, *p; |
1da177e4 LT |
153 | |
154 | BUG_ON(readdir->count < 80); | |
155 | if (cookie > 2) { | |
b7ef1956 | 156 | readdir->cookie = cookie; |
1da177e4 LT |
157 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
158 | return; | |
159 | } | |
160 | ||
161 | readdir->cookie = 0; | |
162 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
163 | if (cookie == 2) | |
164 | return; | |
165 | ||
166 | /* | |
167 | * NFSv4 servers do not return entries for '.' and '..' | |
168 | * Therefore, we fake these entries here. We let '.' | |
169 | * have cookie 0 and '..' have cookie 1. Note that | |
170 | * when talking to the server, we always send cookie 0 | |
171 | * instead of 1 or 2. | |
172 | */ | |
0dbb4c67 | 173 | start = p = kmap_atomic(*readdir->pages, KM_USER0); |
1da177e4 LT |
174 | |
175 | if (cookie == 0) { | |
176 | *p++ = xdr_one; /* next */ | |
177 | *p++ = xdr_zero; /* cookie, first word */ | |
178 | *p++ = xdr_one; /* cookie, second word */ | |
179 | *p++ = xdr_one; /* entry len */ | |
180 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
181 | p++; | |
182 | *p++ = xdr_one; /* bitmap length */ | |
183 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
184 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 185 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
186 | } |
187 | ||
188 | *p++ = xdr_one; /* next */ | |
189 | *p++ = xdr_zero; /* cookie, first word */ | |
190 | *p++ = xdr_two; /* cookie, second word */ | |
191 | *p++ = xdr_two; /* entry len */ | |
192 | memcpy(p, "..\0\0", 4); /* entry */ | |
193 | p++; | |
194 | *p++ = xdr_one; /* bitmap length */ | |
195 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
196 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 197 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
198 | |
199 | readdir->pgbase = (char *)p - (char *)start; | |
200 | readdir->count -= readdir->pgbase; | |
201 | kunmap_atomic(start, KM_USER0); | |
202 | } | |
203 | ||
65de872e TM |
204 | static int nfs4_wait_clnt_recover(struct nfs_client *clp) |
205 | { | |
206 | int res; | |
207 | ||
208 | might_sleep(); | |
209 | ||
e005e804 | 210 | res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING, |
72cb77f4 | 211 | nfs_wait_bit_killable, TASK_KILLABLE); |
65de872e TM |
212 | return res; |
213 | } | |
214 | ||
215 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) | |
216 | { | |
217 | int res = 0; | |
218 | ||
219 | might_sleep(); | |
220 | ||
221 | if (*timeout <= 0) | |
222 | *timeout = NFS4_POLL_RETRY_MIN; | |
223 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
224 | *timeout = NFS4_POLL_RETRY_MAX; | |
225 | schedule_timeout_killable(*timeout); | |
226 | if (fatal_signal_pending(current)) | |
227 | res = -ERESTARTSYS; | |
228 | *timeout <<= 1; | |
229 | return res; | |
230 | } | |
231 | ||
232 | /* This is the error handling routine for processes that are allowed | |
233 | * to sleep. | |
234 | */ | |
235 | static int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception) | |
236 | { | |
237 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 238 | struct nfs4_state *state = exception->state; |
65de872e TM |
239 | int ret = errorcode; |
240 | ||
241 | exception->retry = 0; | |
242 | switch(errorcode) { | |
243 | case 0: | |
244 | return 0; | |
9e33bed5 TM |
245 | case -NFS4ERR_ADMIN_REVOKED: |
246 | case -NFS4ERR_BAD_STATEID: | |
247 | case -NFS4ERR_OPENMODE: | |
248 | if (state == NULL) | |
249 | break; | |
250 | nfs4_state_mark_reclaim_nograce(clp, state); | |
65de872e TM |
251 | case -NFS4ERR_STALE_CLIENTID: |
252 | case -NFS4ERR_STALE_STATEID: | |
253 | case -NFS4ERR_EXPIRED: | |
254 | nfs4_schedule_state_recovery(clp); | |
255 | ret = nfs4_wait_clnt_recover(clp); | |
256 | if (ret == 0) | |
257 | exception->retry = 1; | |
4745e315 | 258 | #if !defined(CONFIG_NFS_V4_1) |
65de872e | 259 | break; |
4745e315 AA |
260 | #else /* !defined(CONFIG_NFS_V4_1) */ |
261 | if (!nfs4_has_session(server->nfs_client)) | |
262 | break; | |
263 | /* FALLTHROUGH */ | |
264 | case -NFS4ERR_BADSESSION: | |
265 | case -NFS4ERR_BADSLOT: | |
266 | case -NFS4ERR_BAD_HIGH_SLOT: | |
267 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
268 | case -NFS4ERR_DEADSESSION: | |
269 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
270 | case -NFS4ERR_SEQ_MISORDERED: | |
271 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
272 | errorcode); | |
0b9e2d41 | 273 | nfs4_schedule_state_recovery(clp); |
4745e315 | 274 | exception->retry = 1; |
b9179237 | 275 | break; |
4745e315 | 276 | #endif /* !defined(CONFIG_NFS_V4_1) */ |
65de872e | 277 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
278 | if (exception->timeout > HZ) { |
279 | /* We have retried a decent amount, time to | |
280 | * fail | |
281 | */ | |
282 | ret = -EBUSY; | |
283 | break; | |
284 | } | |
65de872e TM |
285 | case -NFS4ERR_GRACE: |
286 | case -NFS4ERR_DELAY: | |
287 | ret = nfs4_delay(server->client, &exception->timeout); | |
288 | if (ret != 0) | |
289 | break; | |
290 | case -NFS4ERR_OLD_STATEID: | |
291 | exception->retry = 1; | |
292 | } | |
293 | /* We failed to handle the error */ | |
294 | return nfs4_map_errors(ret); | |
295 | } | |
296 | ||
297 | ||
26e976a8 | 298 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
1da177e4 | 299 | { |
7539bbab | 300 | struct nfs_client *clp = server->nfs_client; |
1da177e4 LT |
301 | spin_lock(&clp->cl_lock); |
302 | if (time_before(clp->cl_last_renewal,timestamp)) | |
303 | clp->cl_last_renewal = timestamp; | |
304 | spin_unlock(&clp->cl_lock); | |
305 | } | |
306 | ||
cccef3b9 AA |
307 | #if defined(CONFIG_NFS_V4_1) |
308 | ||
e2c4ab3c AA |
309 | /* |
310 | * nfs4_free_slot - free a slot and efficiently update slot table. | |
311 | * | |
312 | * freeing a slot is trivially done by clearing its respective bit | |
313 | * in the bitmap. | |
314 | * If the freed slotid equals highest_used_slotid we want to update it | |
315 | * so that the server would be able to size down the slot table if needed, | |
316 | * otherwise we know that the highest_used_slotid is still in use. | |
317 | * When updating highest_used_slotid there may be "holes" in the bitmap | |
318 | * so we need to scan down from highest_used_slotid to 0 looking for the now | |
319 | * highest slotid in use. | |
320 | * If none found, highest_used_slotid is set to -1. | |
321 | */ | |
322 | static void | |
323 | nfs4_free_slot(struct nfs4_slot_table *tbl, u8 free_slotid) | |
324 | { | |
325 | int slotid = free_slotid; | |
326 | ||
327 | spin_lock(&tbl->slot_tbl_lock); | |
328 | /* clear used bit in bitmap */ | |
329 | __clear_bit(slotid, tbl->used_slots); | |
330 | ||
331 | /* update highest_used_slotid when it is freed */ | |
332 | if (slotid == tbl->highest_used_slotid) { | |
333 | slotid = find_last_bit(tbl->used_slots, tbl->max_slots); | |
334 | if (slotid >= 0 && slotid < tbl->max_slots) | |
335 | tbl->highest_used_slotid = slotid; | |
336 | else | |
337 | tbl->highest_used_slotid = -1; | |
338 | } | |
e2c4ab3c AA |
339 | spin_unlock(&tbl->slot_tbl_lock); |
340 | dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__, | |
341 | free_slotid, tbl->highest_used_slotid); | |
342 | } | |
343 | ||
13615871 AA |
344 | void nfs41_sequence_free_slot(const struct nfs_client *clp, |
345 | struct nfs4_sequence_res *res) | |
346 | { | |
347 | struct nfs4_slot_table *tbl; | |
348 | ||
349 | if (!nfs4_has_session(clp)) { | |
350 | dprintk("%s: No session\n", __func__); | |
351 | return; | |
352 | } | |
353 | tbl = &clp->cl_session->fc_slot_table; | |
354 | if (res->sr_slotid == NFS4_MAX_SLOT_TABLE) { | |
13615871 AA |
355 | /* just wake up the next guy waiting since |
356 | * we may have not consumed a slot after all */ | |
691daf3b AA |
357 | dprintk("%s: No slot\n", __func__); |
358 | } else { | |
359 | nfs4_free_slot(tbl, res->sr_slotid); | |
360 | res->sr_slotid = NFS4_MAX_SLOT_TABLE; | |
13615871 | 361 | } |
ea028ac9 AA |
362 | |
363 | /* Signal state manager thread if session is drained */ | |
364 | if (test_bit(NFS4CLNT_SESSION_DRAINING, &clp->cl_state)) { | |
365 | spin_lock(&tbl->slot_tbl_lock); | |
366 | if (tbl->highest_used_slotid == -1) { | |
367 | dprintk("%s COMPLETE: Session Drained\n", __func__); | |
368 | complete(&clp->cl_session->complete); | |
369 | } | |
370 | spin_unlock(&tbl->slot_tbl_lock); | |
691daf3b AA |
371 | } else { |
372 | rpc_wake_up_next(&tbl->slot_tbl_waitq); | |
ea028ac9 | 373 | } |
13615871 AA |
374 | } |
375 | ||
b0df806c AA |
376 | static void nfs41_sequence_done(struct nfs_client *clp, |
377 | struct nfs4_sequence_res *res, | |
378 | int rpc_status) | |
379 | { | |
380 | unsigned long timestamp; | |
381 | struct nfs4_slot_table *tbl; | |
382 | struct nfs4_slot *slot; | |
383 | ||
384 | /* | |
385 | * sr_status remains 1 if an RPC level error occurred. The server | |
386 | * may or may not have processed the sequence operation.. | |
387 | * Proceed as if the server received and processed the sequence | |
388 | * operation. | |
389 | */ | |
390 | if (res->sr_status == 1) | |
391 | res->sr_status = NFS_OK; | |
392 | ||
393 | /* -ERESTARTSYS can result in skipping nfs41_sequence_setup */ | |
394 | if (res->sr_slotid == NFS4_MAX_SLOT_TABLE) | |
395 | goto out; | |
396 | ||
691daf3b | 397 | /* Check the SEQUENCE operation status */ |
b0df806c | 398 | if (res->sr_status == 0) { |
691daf3b AA |
399 | tbl = &clp->cl_session->fc_slot_table; |
400 | slot = tbl->slots + res->sr_slotid; | |
b0df806c AA |
401 | /* Update the slot's sequence and clientid lease timer */ |
402 | ++slot->seq_nr; | |
403 | timestamp = res->sr_renewal_time; | |
404 | spin_lock(&clp->cl_lock); | |
405 | if (time_before(clp->cl_last_renewal, timestamp)) | |
406 | clp->cl_last_renewal = timestamp; | |
407 | spin_unlock(&clp->cl_lock); | |
408 | return; | |
409 | } | |
410 | out: | |
411 | /* The session may be reset by one of the error handlers. */ | |
412 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
413 | nfs41_sequence_free_slot(clp, res); | |
414 | } | |
415 | ||
510b8175 BH |
416 | /* |
417 | * nfs4_find_slot - efficiently look for a free slot | |
418 | * | |
419 | * nfs4_find_slot looks for an unset bit in the used_slots bitmap. | |
420 | * If found, we mark the slot as used, update the highest_used_slotid, | |
421 | * and respectively set up the sequence operation args. | |
422 | * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise. | |
fbcd4abc AA |
423 | * |
424 | * Note: must be called with under the slot_tbl_lock. | |
510b8175 BH |
425 | */ |
426 | static u8 | |
427 | nfs4_find_slot(struct nfs4_slot_table *tbl, struct rpc_task *task) | |
428 | { | |
429 | int slotid; | |
430 | u8 ret_id = NFS4_MAX_SLOT_TABLE; | |
431 | BUILD_BUG_ON((u8)NFS4_MAX_SLOT_TABLE != (int)NFS4_MAX_SLOT_TABLE); | |
432 | ||
510b8175 BH |
433 | dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n", |
434 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, | |
435 | tbl->max_slots); | |
436 | slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots); | |
437 | if (slotid >= tbl->max_slots) | |
438 | goto out; | |
439 | __set_bit(slotid, tbl->used_slots); | |
440 | if (slotid > tbl->highest_used_slotid) | |
441 | tbl->highest_used_slotid = slotid; | |
442 | ret_id = slotid; | |
443 | out: | |
444 | dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n", | |
445 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, ret_id); | |
510b8175 BH |
446 | return ret_id; |
447 | } | |
448 | ||
ce5039c1 AA |
449 | static int nfs41_setup_sequence(struct nfs4_session *session, |
450 | struct nfs4_sequence_args *args, | |
451 | struct nfs4_sequence_res *res, | |
452 | int cache_reply, | |
453 | struct rpc_task *task) | |
454 | { | |
fbcd4abc AA |
455 | struct nfs4_slot *slot; |
456 | struct nfs4_slot_table *tbl; | |
457 | u8 slotid; | |
458 | ||
459 | dprintk("--> %s\n", __func__); | |
ce5039c1 AA |
460 | /* slot already allocated? */ |
461 | if (res->sr_slotid != NFS4_MAX_SLOT_TABLE) | |
462 | return 0; | |
463 | ||
464 | memset(res, 0, sizeof(*res)); | |
465 | res->sr_slotid = NFS4_MAX_SLOT_TABLE; | |
fbcd4abc AA |
466 | tbl = &session->fc_slot_table; |
467 | ||
468 | spin_lock(&tbl->slot_tbl_lock); | |
0b9e2d41 | 469 | if (test_bit(NFS4CLNT_SESSION_DRAINING, &session->clp->cl_state)) { |
ea028ac9 AA |
470 | /* |
471 | * The state manager will wait until the slot table is empty. | |
472 | * Schedule the reset thread | |
473 | */ | |
474 | dprintk("%s Schedule Session Reset\n", __func__); | |
05f0d236 AA |
475 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
476 | nfs4_schedule_state_manager(session->clp); | |
b069d94a | 477 | spin_unlock(&tbl->slot_tbl_lock); |
05f0d236 | 478 | return -EAGAIN; |
b069d94a AA |
479 | } |
480 | ||
fbcd4abc AA |
481 | slotid = nfs4_find_slot(tbl, task); |
482 | if (slotid == NFS4_MAX_SLOT_TABLE) { | |
483 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
484 | spin_unlock(&tbl->slot_tbl_lock); | |
485 | dprintk("<-- %s: no free slots\n", __func__); | |
486 | return -EAGAIN; | |
487 | } | |
488 | spin_unlock(&tbl->slot_tbl_lock); | |
489 | ||
490 | slot = tbl->slots + slotid; | |
99fe60d0 | 491 | args->sa_session = session; |
fbcd4abc AA |
492 | args->sa_slotid = slotid; |
493 | args->sa_cache_this = cache_reply; | |
494 | ||
495 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr); | |
496 | ||
99fe60d0 | 497 | res->sr_session = session; |
fbcd4abc AA |
498 | res->sr_slotid = slotid; |
499 | res->sr_renewal_time = jiffies; | |
500 | /* | |
501 | * sr_status is only set in decode_sequence, and so will remain | |
502 | * set to 1 if an rpc level failure occurs. | |
503 | */ | |
504 | res->sr_status = 1; | |
ce5039c1 AA |
505 | return 0; |
506 | } | |
507 | ||
508 | int nfs4_setup_sequence(struct nfs_client *clp, | |
509 | struct nfs4_sequence_args *args, | |
510 | struct nfs4_sequence_res *res, | |
511 | int cache_reply, | |
512 | struct rpc_task *task) | |
513 | { | |
514 | int ret = 0; | |
515 | ||
516 | dprintk("--> %s clp %p session %p sr_slotid %d\n", | |
517 | __func__, clp, clp->cl_session, res->sr_slotid); | |
518 | ||
519 | if (!nfs4_has_session(clp)) | |
520 | goto out; | |
521 | ret = nfs41_setup_sequence(clp->cl_session, args, res, cache_reply, | |
522 | task); | |
2628eddf | 523 | if (ret && ret != -EAGAIN) { |
ce5039c1 AA |
524 | /* terminate rpc task */ |
525 | task->tk_status = ret; | |
526 | task->tk_action = NULL; | |
527 | } | |
528 | out: | |
529 | dprintk("<-- %s status=%d\n", __func__, ret); | |
530 | return ret; | |
531 | } | |
532 | ||
533 | struct nfs41_call_sync_data { | |
534 | struct nfs_client *clp; | |
535 | struct nfs4_sequence_args *seq_args; | |
536 | struct nfs4_sequence_res *seq_res; | |
537 | int cache_reply; | |
538 | }; | |
539 | ||
540 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
541 | { | |
542 | struct nfs41_call_sync_data *data = calldata; | |
543 | ||
544 | dprintk("--> %s data->clp->cl_session %p\n", __func__, | |
545 | data->clp->cl_session); | |
546 | if (nfs4_setup_sequence(data->clp, data->seq_args, | |
547 | data->seq_res, data->cache_reply, task)) | |
548 | return; | |
549 | rpc_call_start(task); | |
550 | } | |
551 | ||
69ab40c4 AA |
552 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
553 | { | |
554 | struct nfs41_call_sync_data *data = calldata; | |
555 | ||
556 | nfs41_sequence_done(data->clp, data->seq_res, task->tk_status); | |
557 | nfs41_sequence_free_slot(data->clp, data->seq_res); | |
558 | } | |
559 | ||
ce5039c1 AA |
560 | struct rpc_call_ops nfs41_call_sync_ops = { |
561 | .rpc_call_prepare = nfs41_call_sync_prepare, | |
69ab40c4 | 562 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
563 | }; |
564 | ||
565 | static int nfs4_call_sync_sequence(struct nfs_client *clp, | |
566 | struct rpc_clnt *clnt, | |
567 | struct rpc_message *msg, | |
568 | struct nfs4_sequence_args *args, | |
569 | struct nfs4_sequence_res *res, | |
570 | int cache_reply) | |
571 | { | |
572 | int ret; | |
573 | struct rpc_task *task; | |
574 | struct nfs41_call_sync_data data = { | |
575 | .clp = clp, | |
576 | .seq_args = args, | |
577 | .seq_res = res, | |
578 | .cache_reply = cache_reply, | |
579 | }; | |
580 | struct rpc_task_setup task_setup = { | |
581 | .rpc_client = clnt, | |
582 | .rpc_message = msg, | |
583 | .callback_ops = &nfs41_call_sync_ops, | |
584 | .callback_data = &data | |
585 | }; | |
586 | ||
587 | res->sr_slotid = NFS4_MAX_SLOT_TABLE; | |
588 | task = rpc_run_task(&task_setup); | |
589 | if (IS_ERR(task)) | |
590 | ret = PTR_ERR(task); | |
591 | else { | |
592 | ret = task->tk_status; | |
593 | rpc_put_task(task); | |
594 | } | |
595 | return ret; | |
596 | } | |
597 | ||
cccef3b9 AA |
598 | int _nfs4_call_sync_session(struct nfs_server *server, |
599 | struct rpc_message *msg, | |
600 | struct nfs4_sequence_args *args, | |
601 | struct nfs4_sequence_res *res, | |
602 | int cache_reply) | |
603 | { | |
ce5039c1 AA |
604 | return nfs4_call_sync_sequence(server->nfs_client, server->client, |
605 | msg, args, res, cache_reply); | |
cccef3b9 AA |
606 | } |
607 | ||
608 | #endif /* CONFIG_NFS_V4_1 */ | |
609 | ||
610 | int _nfs4_call_sync(struct nfs_server *server, | |
611 | struct rpc_message *msg, | |
612 | struct nfs4_sequence_args *args, | |
613 | struct nfs4_sequence_res *res, | |
614 | int cache_reply) | |
615 | { | |
f3752975 | 616 | args->sa_session = res->sr_session = NULL; |
cccef3b9 AA |
617 | return rpc_call_sync(server->client, msg, 0); |
618 | } | |
619 | ||
620 | #define nfs4_call_sync(server, msg, args, res, cache_reply) \ | |
621 | (server)->nfs_client->cl_call_sync((server), (msg), &(args)->seq_args, \ | |
622 | &(res)->seq_res, (cache_reply)) | |
623 | ||
b0df806c AA |
624 | static void nfs4_sequence_done(const struct nfs_server *server, |
625 | struct nfs4_sequence_res *res, int rpc_status) | |
626 | { | |
627 | #ifdef CONFIG_NFS_V4_1 | |
628 | if (nfs4_has_session(server->nfs_client)) | |
629 | nfs41_sequence_done(server->nfs_client, res, rpc_status); | |
630 | #endif /* CONFIG_NFS_V4_1 */ | |
631 | } | |
632 | ||
e608e79f AA |
633 | void nfs4_restart_rpc(struct rpc_task *task, const struct nfs_client *clp, |
634 | struct nfs4_sequence_res *res) | |
635 | { | |
636 | #ifdef CONFIG_NFS_V4_1 | |
637 | if (nfs4_has_session(clp)) { | |
638 | nfs41_sequence_free_slot(clp, res); | |
639 | rpc_restart_call_prepare(task); | |
640 | return; | |
641 | } | |
642 | #endif /* CONFIG_NFS_V4_1 */ | |
643 | rpc_restart_call(task); | |
644 | } | |
645 | ||
b0df806c AA |
646 | /* no restart, therefore free slot here */ |
647 | static void nfs4_sequence_done_free_slot(const struct nfs_server *server, | |
648 | struct nfs4_sequence_res *res, | |
649 | int rpc_status) | |
650 | { | |
651 | nfs4_sequence_done(server, res, rpc_status); | |
652 | nfs4_sequence_free_slot(server->nfs_client, res); | |
653 | } | |
654 | ||
38478b24 | 655 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 656 | { |
38478b24 | 657 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 658 | |
38478b24 | 659 | spin_lock(&dir->i_lock); |
40d24704 TM |
660 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; |
661 | if (!cinfo->atomic || cinfo->before != nfsi->change_attr) | |
bfc69a45 | 662 | nfs_force_lookup_revalidate(dir); |
40d24704 | 663 | nfsi->change_attr = cinfo->after; |
38478b24 | 664 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
665 | } |
666 | ||
e56e0b78 | 667 | struct nfs4_opendata { |
c6d00e63 | 668 | struct kref kref; |
e56e0b78 TM |
669 | struct nfs_openargs o_arg; |
670 | struct nfs_openres o_res; | |
cdd4e68b TM |
671 | struct nfs_open_confirmargs c_arg; |
672 | struct nfs_open_confirmres c_res; | |
e56e0b78 TM |
673 | struct nfs_fattr f_attr; |
674 | struct nfs_fattr dir_attr; | |
ad389da7 | 675 | struct path path; |
e56e0b78 TM |
676 | struct dentry *dir; |
677 | struct nfs4_state_owner *owner; | |
aac00a8d | 678 | struct nfs4_state *state; |
e56e0b78 | 679 | struct iattr attrs; |
26e976a8 | 680 | unsigned long timestamp; |
3e309914 | 681 | unsigned int rpc_done : 1; |
24ac23ab TM |
682 | int rpc_status; |
683 | int cancelled; | |
e56e0b78 TM |
684 | }; |
685 | ||
2ced46c2 TM |
686 | |
687 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
688 | { | |
689 | p->o_res.f_attr = &p->f_attr; | |
690 | p->o_res.dir_attr = &p->dir_attr; | |
c1d51931 TM |
691 | p->o_res.seqid = p->o_arg.seqid; |
692 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 TM |
693 | p->o_res.server = p->o_arg.server; |
694 | nfs_fattr_init(&p->f_attr); | |
695 | nfs_fattr_init(&p->dir_attr); | |
578e4585 | 696 | p->o_res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE; |
2ced46c2 TM |
697 | } |
698 | ||
ad389da7 | 699 | static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path, |
dc0b027d | 700 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
e56e0b78 TM |
701 | const struct iattr *attrs) |
702 | { | |
ad389da7 | 703 | struct dentry *parent = dget_parent(path->dentry); |
e56e0b78 TM |
704 | struct inode *dir = parent->d_inode; |
705 | struct nfs_server *server = NFS_SERVER(dir); | |
706 | struct nfs4_opendata *p; | |
707 | ||
708 | p = kzalloc(sizeof(*p), GFP_KERNEL); | |
709 | if (p == NULL) | |
710 | goto err; | |
711 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid); | |
712 | if (p->o_arg.seqid == NULL) | |
713 | goto err_free; | |
ad389da7 TM |
714 | p->path.mnt = mntget(path->mnt); |
715 | p->path.dentry = dget(path->dentry); | |
e56e0b78 TM |
716 | p->dir = parent; |
717 | p->owner = sp; | |
718 | atomic_inc(&sp->so_count); | |
719 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
720 | p->o_arg.open_flags = flags; |
721 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
7539bbab | 722 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 723 | p->o_arg.id = sp->so_owner_id.id; |
ad389da7 | 724 | p->o_arg.name = &p->path.dentry->d_name; |
e56e0b78 TM |
725 | p->o_arg.server = server; |
726 | p->o_arg.bitmask = server->attr_bitmask; | |
727 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; | |
e56e0b78 | 728 | if (flags & O_EXCL) { |
4882ef72 AB |
729 | if (nfs4_has_persistent_session(server->nfs_client)) { |
730 | /* GUARDED */ | |
731 | p->o_arg.u.attrs = &p->attrs; | |
732 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
733 | } else { /* EXCLUSIVE4_1 */ | |
734 | u32 *s = (u32 *) p->o_arg.u.verifier.data; | |
735 | s[0] = jiffies; | |
736 | s[1] = current->pid; | |
737 | } | |
e56e0b78 TM |
738 | } else if (flags & O_CREAT) { |
739 | p->o_arg.u.attrs = &p->attrs; | |
740 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
741 | } | |
cdd4e68b TM |
742 | p->c_arg.fh = &p->o_res.fh; |
743 | p->c_arg.stateid = &p->o_res.stateid; | |
744 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 745 | nfs4_init_opendata_res(p); |
c6d00e63 | 746 | kref_init(&p->kref); |
e56e0b78 TM |
747 | return p; |
748 | err_free: | |
749 | kfree(p); | |
750 | err: | |
751 | dput(parent); | |
752 | return NULL; | |
753 | } | |
754 | ||
c6d00e63 | 755 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 756 | { |
c6d00e63 TM |
757 | struct nfs4_opendata *p = container_of(kref, |
758 | struct nfs4_opendata, kref); | |
759 | ||
760 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
761 | if (p->state != NULL) |
762 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
763 | nfs4_put_state_owner(p->owner); |
764 | dput(p->dir); | |
31f31db1 | 765 | path_put(&p->path); |
c6d00e63 TM |
766 | kfree(p); |
767 | } | |
768 | ||
769 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
770 | { | |
771 | if (p != NULL) | |
772 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
773 | } |
774 | ||
06f814a3 TM |
775 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
776 | { | |
06f814a3 TM |
777 | int ret; |
778 | ||
06f814a3 | 779 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
780 | return ret; |
781 | } | |
782 | ||
dc0b027d | 783 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
784 | { |
785 | int ret = 0; | |
dc0b027d TM |
786 | |
787 | if (open_mode & O_EXCL) | |
788 | goto out; | |
789 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 TM |
790 | case FMODE_READ: |
791 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0; | |
6ee41268 TM |
792 | break; |
793 | case FMODE_WRITE: | |
794 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0; | |
6ee41268 TM |
795 | break; |
796 | case FMODE_READ|FMODE_WRITE: | |
797 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0; | |
798 | } | |
dc0b027d | 799 | out: |
6ee41268 TM |
800 | return ret; |
801 | } | |
802 | ||
dc0b027d | 803 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 804 | { |
dc0b027d | 805 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 806 | return 0; |
15c831bf | 807 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 808 | return 0; |
b7391f44 | 809 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
810 | return 1; |
811 | } | |
812 | ||
dc0b027d | 813 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 814 | { |
dc0b027d | 815 | switch (fmode) { |
e7616923 TM |
816 | case FMODE_WRITE: |
817 | state->n_wronly++; | |
818 | break; | |
819 | case FMODE_READ: | |
820 | state->n_rdonly++; | |
821 | break; | |
822 | case FMODE_READ|FMODE_WRITE: | |
823 | state->n_rdwr++; | |
824 | } | |
dc0b027d | 825 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
826 | } |
827 | ||
dc0b027d | 828 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
829 | { |
830 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
831 | memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data)); | |
832 | memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data)); | |
dc0b027d | 833 | switch (fmode) { |
003707c7 TM |
834 | case FMODE_READ: |
835 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
836 | break; | |
837 | case FMODE_WRITE: | |
838 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
839 | break; | |
840 | case FMODE_READ|FMODE_WRITE: | |
841 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
842 | } | |
e7616923 TM |
843 | } |
844 | ||
dc0b027d | 845 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 846 | { |
8bda4e4c | 847 | write_seqlock(&state->seqlock); |
dc0b027d | 848 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 849 | write_sequnlock(&state->seqlock); |
003707c7 TM |
850 | } |
851 | ||
dc0b027d | 852 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 853 | { |
8bda4e4c TM |
854 | /* |
855 | * Protect the call to nfs4_state_set_mode_locked and | |
856 | * serialise the stateid update | |
857 | */ | |
858 | write_seqlock(&state->seqlock); | |
003707c7 TM |
859 | if (deleg_stateid != NULL) { |
860 | memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data)); | |
861 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
862 | } | |
863 | if (open_stateid != NULL) | |
dc0b027d | 864 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
865 | write_sequnlock(&state->seqlock); |
866 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 867 | update_open_stateflags(state, fmode); |
ec073428 | 868 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
869 | } |
870 | ||
dc0b027d | 871 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
872 | { |
873 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
874 | struct nfs_delegation *deleg_cur; | |
875 | int ret = 0; | |
876 | ||
dc0b027d | 877 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
878 | |
879 | rcu_read_lock(); | |
880 | deleg_cur = rcu_dereference(nfsi->delegation); | |
881 | if (deleg_cur == NULL) | |
882 | goto no_delegation; | |
883 | ||
884 | spin_lock(&deleg_cur->lock); | |
885 | if (nfsi->delegation != deleg_cur || | |
dc0b027d | 886 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
887 | goto no_delegation_unlock; |
888 | ||
889 | if (delegation == NULL) | |
890 | delegation = &deleg_cur->stateid; | |
891 | else if (memcmp(deleg_cur->stateid.data, delegation->data, NFS4_STATEID_SIZE) != 0) | |
892 | goto no_delegation_unlock; | |
893 | ||
b7391f44 | 894 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 895 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
896 | ret = 1; |
897 | no_delegation_unlock: | |
898 | spin_unlock(&deleg_cur->lock); | |
899 | no_delegation: | |
900 | rcu_read_unlock(); | |
901 | ||
902 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 903 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
904 | ret = 1; |
905 | } | |
906 | ||
907 | return ret; | |
908 | } | |
909 | ||
910 | ||
dc0b027d | 911 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
912 | { |
913 | struct nfs_delegation *delegation; | |
914 | ||
915 | rcu_read_lock(); | |
916 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 917 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
918 | rcu_read_unlock(); |
919 | return; | |
920 | } | |
921 | rcu_read_unlock(); | |
922 | nfs_inode_return_delegation(inode); | |
923 | } | |
924 | ||
6ee41268 | 925 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
926 | { |
927 | struct nfs4_state *state = opendata->state; | |
928 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
929 | struct nfs_delegation *delegation; | |
dc0b027d TM |
930 | int open_mode = opendata->o_arg.open_flags & O_EXCL; |
931 | fmode_t fmode = opendata->o_arg.fmode; | |
aac00a8d TM |
932 | nfs4_stateid stateid; |
933 | int ret = -EAGAIN; | |
934 | ||
aac00a8d | 935 | for (;;) { |
dc0b027d | 936 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 937 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
938 | if (can_open_cached(state, fmode, open_mode)) { |
939 | update_open_stateflags(state, fmode); | |
6ee41268 | 940 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
941 | goto out_return_state; |
942 | } | |
943 | spin_unlock(&state->owner->so_lock); | |
944 | } | |
34310430 TM |
945 | rcu_read_lock(); |
946 | delegation = rcu_dereference(nfsi->delegation); | |
947 | if (delegation == NULL || | |
dc0b027d | 948 | !can_open_delegated(delegation, fmode)) { |
34310430 | 949 | rcu_read_unlock(); |
aac00a8d | 950 | break; |
34310430 | 951 | } |
aac00a8d TM |
952 | /* Save the delegation */ |
953 | memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data)); | |
954 | rcu_read_unlock(); | |
af22f94a | 955 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
956 | if (ret != 0) |
957 | goto out; | |
958 | ret = -EAGAIN; | |
34310430 TM |
959 | |
960 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 961 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 962 | goto out_return_state; |
aac00a8d | 963 | } |
aac00a8d TM |
964 | out: |
965 | return ERR_PTR(ret); | |
966 | out_return_state: | |
967 | atomic_inc(&state->count); | |
968 | return state; | |
969 | } | |
970 | ||
24ac23ab TM |
971 | static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) |
972 | { | |
973 | struct inode *inode; | |
974 | struct nfs4_state *state = NULL; | |
003707c7 | 975 | struct nfs_delegation *delegation; |
1b370bc2 | 976 | int ret; |
24ac23ab | 977 | |
aac00a8d | 978 | if (!data->rpc_done) { |
6ee41268 | 979 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
980 | goto out; |
981 | } | |
982 | ||
1b370bc2 | 983 | ret = -EAGAIN; |
24ac23ab | 984 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 985 | goto err; |
24ac23ab | 986 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 987 | ret = PTR_ERR(inode); |
03f28e3a | 988 | if (IS_ERR(inode)) |
1b370bc2 TM |
989 | goto err; |
990 | ret = -ENOMEM; | |
24ac23ab TM |
991 | state = nfs4_get_open_state(inode, data->owner); |
992 | if (state == NULL) | |
1b370bc2 | 993 | goto err_put_inode; |
549d6ed5 | 994 | if (data->o_res.delegation_type != 0) { |
549d6ed5 TM |
995 | int delegation_flags = 0; |
996 | ||
003707c7 TM |
997 | rcu_read_lock(); |
998 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
999 | if (delegation) | |
1000 | delegation_flags = delegation->flags; | |
1001 | rcu_read_unlock(); | |
15c831bf | 1002 | if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) |
549d6ed5 TM |
1003 | nfs_inode_set_delegation(state->inode, |
1004 | data->owner->so_cred, | |
1005 | &data->o_res); | |
1006 | else | |
1007 | nfs_inode_reclaim_delegation(state->inode, | |
1008 | data->owner->so_cred, | |
1009 | &data->o_res); | |
1010 | } | |
34310430 TM |
1011 | |
1012 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
dc0b027d | 1013 | data->o_arg.fmode); |
24ac23ab | 1014 | iput(inode); |
aac00a8d | 1015 | out: |
24ac23ab | 1016 | return state; |
1b370bc2 TM |
1017 | err_put_inode: |
1018 | iput(inode); | |
1019 | err: | |
1020 | return ERR_PTR(ret); | |
24ac23ab TM |
1021 | } |
1022 | ||
864472e9 TM |
1023 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1024 | { | |
1025 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1026 | struct nfs_open_context *ctx; | |
1027 | ||
1028 | spin_lock(&state->inode->i_lock); | |
1029 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1030 | if (ctx->state != state) | |
1031 | continue; | |
1032 | get_nfs_open_context(ctx); | |
1033 | spin_unlock(&state->inode->i_lock); | |
1034 | return ctx; | |
1035 | } | |
1036 | spin_unlock(&state->inode->i_lock); | |
1037 | return ERR_PTR(-ENOENT); | |
1038 | } | |
1039 | ||
6f220ed5 TM |
1040 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
1041 | { | |
1042 | struct nfs4_opendata *opendata; | |
1043 | ||
dc0b027d | 1044 | opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL); |
6f220ed5 TM |
1045 | if (opendata == NULL) |
1046 | return ERR_PTR(-ENOMEM); | |
1047 | opendata->state = state; | |
1048 | atomic_inc(&state->count); | |
1049 | return opendata; | |
1050 | } | |
1051 | ||
dc0b027d | 1052 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1053 | { |
2ced46c2 | 1054 | struct nfs4_state *newstate; |
864472e9 TM |
1055 | int ret; |
1056 | ||
dc0b027d TM |
1057 | opendata->o_arg.open_flags = 0; |
1058 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1059 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1060 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1061 | nfs4_init_opendata_res(opendata); | |
864472e9 TM |
1062 | ret = _nfs4_proc_open(opendata); |
1063 | if (ret != 0) | |
1064 | return ret; | |
2ced46c2 | 1065 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1066 | if (IS_ERR(newstate)) |
1067 | return PTR_ERR(newstate); | |
dc0b027d | 1068 | nfs4_close_state(&opendata->path, newstate, fmode); |
2ced46c2 | 1069 | *res = newstate; |
864472e9 TM |
1070 | return 0; |
1071 | } | |
1072 | ||
1073 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1074 | { | |
864472e9 | 1075 | struct nfs4_state *newstate; |
864472e9 TM |
1076 | int ret; |
1077 | ||
1078 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1079 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1080 | smp_rmb(); |
1081 | if (state->n_rdwr != 0) { | |
2ced46c2 | 1082 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1083 | if (ret != 0) |
1084 | return ret; | |
2ced46c2 TM |
1085 | if (newstate != state) |
1086 | return -ESTALE; | |
864472e9 TM |
1087 | } |
1088 | if (state->n_wronly != 0) { | |
2ced46c2 | 1089 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1090 | if (ret != 0) |
1091 | return ret; | |
2ced46c2 TM |
1092 | if (newstate != state) |
1093 | return -ESTALE; | |
864472e9 TM |
1094 | } |
1095 | if (state->n_rdonly != 0) { | |
2ced46c2 | 1096 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1097 | if (ret != 0) |
1098 | return ret; | |
2ced46c2 TM |
1099 | if (newstate != state) |
1100 | return -ESTALE; | |
864472e9 | 1101 | } |
1ac7e2fd TM |
1102 | /* |
1103 | * We may have performed cached opens for all three recoveries. | |
1104 | * Check if we need to update the current stateid. | |
1105 | */ | |
1106 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
1107 | memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) { | |
8bda4e4c | 1108 | write_seqlock(&state->seqlock); |
1ac7e2fd TM |
1109 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
1110 | memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)); | |
8bda4e4c | 1111 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1112 | } |
864472e9 TM |
1113 | return 0; |
1114 | } | |
1115 | ||
1da177e4 LT |
1116 | /* |
1117 | * OPEN_RECLAIM: | |
1118 | * reclaim state on the server after a reboot. | |
1da177e4 | 1119 | */ |
539cd03a | 1120 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1121 | { |
1ac7e2fd | 1122 | struct nfs_delegation *delegation; |
864472e9 | 1123 | struct nfs4_opendata *opendata; |
dc0b027d | 1124 | fmode_t delegation_type = 0; |
1da177e4 LT |
1125 | int status; |
1126 | ||
6f220ed5 TM |
1127 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1128 | if (IS_ERR(opendata)) | |
1129 | return PTR_ERR(opendata); | |
864472e9 TM |
1130 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1131 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1132 | rcu_read_lock(); |
1133 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1134 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1135 | delegation_type = delegation->type; |
1ac7e2fd | 1136 | rcu_read_unlock(); |
864472e9 TM |
1137 | opendata->o_arg.u.delegation_type = delegation_type; |
1138 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1139 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1140 | return status; |
1141 | } | |
1142 | ||
539cd03a | 1143 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1144 | { |
1145 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1146 | struct nfs4_exception exception = { }; | |
1147 | int err; | |
1148 | do { | |
539cd03a | 1149 | err = _nfs4_do_open_reclaim(ctx, state); |
202b50dc TM |
1150 | if (err != -NFS4ERR_DELAY) |
1151 | break; | |
1152 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1153 | } while (exception.retry); |
1154 | return err; | |
1155 | } | |
1156 | ||
864472e9 TM |
1157 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1158 | { | |
1159 | struct nfs_open_context *ctx; | |
1160 | int ret; | |
1161 | ||
1162 | ctx = nfs4_state_find_open_context(state); | |
1163 | if (IS_ERR(ctx)) | |
1164 | return PTR_ERR(ctx); | |
539cd03a | 1165 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1166 | put_nfs_open_context(ctx); |
1167 | return ret; | |
1168 | } | |
1169 | ||
13437e12 | 1170 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1171 | { |
e56e0b78 | 1172 | struct nfs4_opendata *opendata; |
864472e9 | 1173 | int ret; |
1da177e4 | 1174 | |
6f220ed5 TM |
1175 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1176 | if (IS_ERR(opendata)) | |
1177 | return PTR_ERR(opendata); | |
e56e0b78 | 1178 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
13437e12 | 1179 | memcpy(opendata->o_arg.u.delegation.data, stateid->data, |
e56e0b78 | 1180 | sizeof(opendata->o_arg.u.delegation.data)); |
864472e9 | 1181 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1182 | nfs4_opendata_put(opendata); |
864472e9 | 1183 | return ret; |
1da177e4 LT |
1184 | } |
1185 | ||
13437e12 | 1186 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1187 | { |
1188 | struct nfs4_exception exception = { }; | |
539cd03a | 1189 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1190 | int err; |
1191 | do { | |
13437e12 | 1192 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1193 | switch (err) { |
1194 | case 0: | |
965b5d67 TM |
1195 | case -ENOENT: |
1196 | case -ESTALE: | |
1197 | goto out; | |
1da177e4 LT |
1198 | case -NFS4ERR_STALE_CLIENTID: |
1199 | case -NFS4ERR_STALE_STATEID: | |
1200 | case -NFS4ERR_EXPIRED: | |
1201 | /* Don't recall a delegation if it was lost */ | |
7539bbab | 1202 | nfs4_schedule_state_recovery(server->nfs_client); |
965b5d67 TM |
1203 | goto out; |
1204 | case -ERESTARTSYS: | |
1205 | /* | |
1206 | * The show must go on: exit, but mark the | |
1207 | * stateid as needing recovery. | |
1208 | */ | |
1209 | case -NFS4ERR_ADMIN_REVOKED: | |
1210 | case -NFS4ERR_BAD_STATEID: | |
1211 | nfs4_state_mark_reclaim_nograce(server->nfs_client, state); | |
1212 | case -ENOMEM: | |
1213 | err = 0; | |
1214 | goto out; | |
1da177e4 LT |
1215 | } |
1216 | err = nfs4_handle_exception(server, err, &exception); | |
1217 | } while (exception.retry); | |
965b5d67 | 1218 | out: |
1da177e4 LT |
1219 | return err; |
1220 | } | |
1221 | ||
cdd4e68b TM |
1222 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1223 | { | |
1224 | struct nfs4_opendata *data = calldata; | |
1225 | ||
1226 | data->rpc_status = task->tk_status; | |
1227 | if (RPC_ASSASSINATED(task)) | |
1228 | return; | |
26e976a8 | 1229 | if (data->rpc_status == 0) { |
cdd4e68b TM |
1230 | memcpy(data->o_res.stateid.data, data->c_res.stateid.data, |
1231 | sizeof(data->o_res.stateid.data)); | |
bb22629e | 1232 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1233 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1234 | data->rpc_done = 1; |
26e976a8 | 1235 | } |
cdd4e68b TM |
1236 | } |
1237 | ||
1238 | static void nfs4_open_confirm_release(void *calldata) | |
1239 | { | |
1240 | struct nfs4_opendata *data = calldata; | |
1241 | struct nfs4_state *state = NULL; | |
1242 | ||
1243 | /* If this request hasn't been cancelled, do nothing */ | |
1244 | if (data->cancelled == 0) | |
1245 | goto out_free; | |
1246 | /* In case of error, no cleanup! */ | |
3e309914 | 1247 | if (!data->rpc_done) |
cdd4e68b | 1248 | goto out_free; |
cdd4e68b | 1249 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1250 | if (!IS_ERR(state)) |
dc0b027d | 1251 | nfs4_close_state(&data->path, state, data->o_arg.fmode); |
cdd4e68b | 1252 | out_free: |
c6d00e63 | 1253 | nfs4_opendata_put(data); |
cdd4e68b TM |
1254 | } |
1255 | ||
1256 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1257 | .rpc_call_done = nfs4_open_confirm_done, |
1258 | .rpc_release = nfs4_open_confirm_release, | |
1259 | }; | |
1260 | ||
1261 | /* | |
1262 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1263 | */ | |
1264 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1265 | { | |
1266 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1267 | struct rpc_task *task; | |
5138fde0 TM |
1268 | struct rpc_message msg = { |
1269 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1270 | .rpc_argp = &data->c_arg, | |
1271 | .rpc_resp = &data->c_res, | |
1272 | .rpc_cred = data->owner->so_cred, | |
1273 | }; | |
c970aa85 TM |
1274 | struct rpc_task_setup task_setup_data = { |
1275 | .rpc_client = server->client, | |
5138fde0 | 1276 | .rpc_message = &msg, |
c970aa85 TM |
1277 | .callback_ops = &nfs4_open_confirm_ops, |
1278 | .callback_data = data, | |
101070ca | 1279 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1280 | .flags = RPC_TASK_ASYNC, |
1281 | }; | |
1da177e4 LT |
1282 | int status; |
1283 | ||
c6d00e63 | 1284 | kref_get(&data->kref); |
3e309914 TM |
1285 | data->rpc_done = 0; |
1286 | data->rpc_status = 0; | |
5138fde0 | 1287 | data->timestamp = jiffies; |
c970aa85 | 1288 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1289 | if (IS_ERR(task)) |
cdd4e68b | 1290 | return PTR_ERR(task); |
cdd4e68b TM |
1291 | status = nfs4_wait_for_completion_rpc_task(task); |
1292 | if (status != 0) { | |
1293 | data->cancelled = 1; | |
1294 | smp_wmb(); | |
1295 | } else | |
1296 | status = data->rpc_status; | |
e6b3c4db | 1297 | rpc_put_task(task); |
1da177e4 LT |
1298 | return status; |
1299 | } | |
1300 | ||
24ac23ab | 1301 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1302 | { |
24ac23ab TM |
1303 | struct nfs4_opendata *data = calldata; |
1304 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1305 | |
24ac23ab TM |
1306 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
1307 | return; | |
aac00a8d TM |
1308 | /* |
1309 | * Check if we still need to send an OPEN call, or if we can use | |
1310 | * a delegation instead. | |
1311 | */ | |
1312 | if (data->state != NULL) { | |
1313 | struct nfs_delegation *delegation; | |
1314 | ||
dc0b027d | 1315 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1316 | goto out_no_action; |
aac00a8d TM |
1317 | rcu_read_lock(); |
1318 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
1319 | if (delegation != NULL && | |
15c831bf | 1320 | test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) == 0) { |
aac00a8d | 1321 | rcu_read_unlock(); |
6ee41268 | 1322 | goto out_no_action; |
aac00a8d TM |
1323 | } |
1324 | rcu_read_unlock(); | |
1325 | } | |
24ac23ab | 1326 | /* Update sequence id. */ |
9f958ab8 | 1327 | data->o_arg.id = sp->so_owner_id.id; |
24ac23ab | 1328 | data->o_arg.clientid = sp->so_client->cl_clientid; |
6f220ed5 | 1329 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1330 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
6f220ed5 TM |
1331 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1332 | } | |
26e976a8 | 1333 | data->timestamp = jiffies; |
d898528c AA |
1334 | if (nfs4_setup_sequence(data->o_arg.server->nfs_client, |
1335 | &data->o_arg.seq_args, | |
1336 | &data->o_res.seq_res, 1, task)) | |
1337 | return; | |
5138fde0 | 1338 | rpc_call_start(task); |
6ee41268 TM |
1339 | return; |
1340 | out_no_action: | |
1341 | task->tk_action = NULL; | |
1342 | ||
24ac23ab | 1343 | } |
1da177e4 | 1344 | |
24ac23ab TM |
1345 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1346 | { | |
1347 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1348 | |
24ac23ab | 1349 | data->rpc_status = task->tk_status; |
d898528c AA |
1350 | |
1351 | nfs4_sequence_done_free_slot(data->o_arg.server, &data->o_res.seq_res, | |
1352 | task->tk_status); | |
1353 | ||
24ac23ab TM |
1354 | if (RPC_ASSASSINATED(task)) |
1355 | return; | |
1356 | if (task->tk_status == 0) { | |
1357 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1358 | case S_IFREG: |
1359 | break; | |
1360 | case S_IFLNK: | |
24ac23ab | 1361 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1362 | break; |
1363 | case S_IFDIR: | |
24ac23ab | 1364 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1365 | break; |
1366 | default: | |
24ac23ab | 1367 | data->rpc_status = -ENOTDIR; |
6f926b5b | 1368 | } |
26e976a8 | 1369 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1370 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1371 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1372 | } |
3e309914 | 1373 | data->rpc_done = 1; |
24ac23ab | 1374 | } |
6f926b5b | 1375 | |
24ac23ab TM |
1376 | static void nfs4_open_release(void *calldata) |
1377 | { | |
1378 | struct nfs4_opendata *data = calldata; | |
1379 | struct nfs4_state *state = NULL; | |
1380 | ||
1381 | /* If this request hasn't been cancelled, do nothing */ | |
1382 | if (data->cancelled == 0) | |
1383 | goto out_free; | |
1384 | /* In case of error, no cleanup! */ | |
3e309914 | 1385 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1386 | goto out_free; |
1387 | /* In case we need an open_confirm, no cleanup! */ | |
1388 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1389 | goto out_free; | |
24ac23ab | 1390 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1391 | if (!IS_ERR(state)) |
dc0b027d | 1392 | nfs4_close_state(&data->path, state, data->o_arg.fmode); |
24ac23ab | 1393 | out_free: |
c6d00e63 | 1394 | nfs4_opendata_put(data); |
24ac23ab TM |
1395 | } |
1396 | ||
1397 | static const struct rpc_call_ops nfs4_open_ops = { | |
1398 | .rpc_call_prepare = nfs4_open_prepare, | |
1399 | .rpc_call_done = nfs4_open_done, | |
1400 | .rpc_release = nfs4_open_release, | |
1401 | }; | |
1402 | ||
1403 | /* | |
1404 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1405 | */ | |
1406 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1407 | { | |
1408 | struct inode *dir = data->dir->d_inode; | |
1409 | struct nfs_server *server = NFS_SERVER(dir); | |
1410 | struct nfs_openargs *o_arg = &data->o_arg; | |
1411 | struct nfs_openres *o_res = &data->o_res; | |
1412 | struct rpc_task *task; | |
5138fde0 TM |
1413 | struct rpc_message msg = { |
1414 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1415 | .rpc_argp = o_arg, | |
1416 | .rpc_resp = o_res, | |
1417 | .rpc_cred = data->owner->so_cred, | |
1418 | }; | |
c970aa85 TM |
1419 | struct rpc_task_setup task_setup_data = { |
1420 | .rpc_client = server->client, | |
5138fde0 | 1421 | .rpc_message = &msg, |
c970aa85 TM |
1422 | .callback_ops = &nfs4_open_ops, |
1423 | .callback_data = data, | |
101070ca | 1424 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1425 | .flags = RPC_TASK_ASYNC, |
1426 | }; | |
24ac23ab TM |
1427 | int status; |
1428 | ||
c6d00e63 | 1429 | kref_get(&data->kref); |
3e309914 TM |
1430 | data->rpc_done = 0; |
1431 | data->rpc_status = 0; | |
2ced46c2 | 1432 | data->cancelled = 0; |
c970aa85 | 1433 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1434 | if (IS_ERR(task)) |
24ac23ab | 1435 | return PTR_ERR(task); |
24ac23ab TM |
1436 | status = nfs4_wait_for_completion_rpc_task(task); |
1437 | if (status != 0) { | |
1438 | data->cancelled = 1; | |
1439 | smp_wmb(); | |
1440 | } else | |
1441 | status = data->rpc_status; | |
e6b3c4db | 1442 | rpc_put_task(task); |
3e309914 | 1443 | if (status != 0 || !data->rpc_done) |
24ac23ab TM |
1444 | return status; |
1445 | ||
9936781d TM |
1446 | if (o_res->fh.size == 0) |
1447 | _nfs4_proc_lookup(dir, o_arg->name, &o_res->fh, o_res->f_attr); | |
1448 | ||
56ae19f3 TM |
1449 | if (o_arg->open_flags & O_CREAT) { |
1450 | update_changeattr(dir, &o_res->cinfo); | |
1451 | nfs_post_op_update_inode(dir, o_res->dir_attr); | |
1452 | } else | |
1453 | nfs_refresh_inode(dir, o_res->dir_attr); | |
1da177e4 | 1454 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1455 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1456 | if (status != 0) |
24ac23ab | 1457 | return status; |
1da177e4 LT |
1458 | } |
1459 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1460 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1461 | return 0; |
1da177e4 LT |
1462 | } |
1463 | ||
10afec90 | 1464 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
58d9714a | 1465 | { |
7539bbab | 1466 | struct nfs_client *clp = server->nfs_client; |
a78cb57a | 1467 | unsigned int loop; |
6b30954e | 1468 | int ret; |
58d9714a | 1469 | |
a78cb57a | 1470 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { |
65de872e | 1471 | ret = nfs4_wait_clnt_recover(clp); |
6b30954e | 1472 | if (ret != 0) |
a78cb57a | 1473 | break; |
e598d843 TM |
1474 | if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) && |
1475 | !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state)) | |
6b30954e | 1476 | break; |
58d9714a | 1477 | nfs4_schedule_state_recovery(clp); |
a78cb57a | 1478 | ret = -EIO; |
6b30954e | 1479 | } |
a78cb57a | 1480 | return ret; |
58d9714a TM |
1481 | } |
1482 | ||
1da177e4 LT |
1483 | /* |
1484 | * OPEN_EXPIRED: | |
1485 | * reclaim state on the server after a network partition. | |
1486 | * Assumes caller holds the appropriate lock | |
1487 | */ | |
539cd03a | 1488 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1489 | { |
e56e0b78 | 1490 | struct nfs4_opendata *opendata; |
864472e9 | 1491 | int ret; |
1da177e4 | 1492 | |
6f220ed5 TM |
1493 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1494 | if (IS_ERR(opendata)) | |
1495 | return PTR_ERR(opendata); | |
864472e9 | 1496 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1497 | if (ret == -ESTALE) |
539cd03a | 1498 | d_drop(ctx->path.dentry); |
c6d00e63 | 1499 | nfs4_opendata_put(opendata); |
864472e9 | 1500 | return ret; |
1da177e4 LT |
1501 | } |
1502 | ||
a9ed2e25 | 1503 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1504 | { |
539cd03a | 1505 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1506 | struct nfs4_exception exception = { }; |
1507 | int err; | |
1508 | ||
1509 | do { | |
539cd03a | 1510 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1511 | switch (err) { |
1512 | default: | |
1513 | goto out; | |
1514 | case -NFS4ERR_GRACE: | |
1515 | case -NFS4ERR_DELAY: | |
1516 | nfs4_handle_exception(server, err, &exception); | |
1517 | err = 0; | |
1518 | } | |
202b50dc | 1519 | } while (exception.retry); |
a9ed2e25 | 1520 | out: |
202b50dc TM |
1521 | return err; |
1522 | } | |
1523 | ||
1da177e4 LT |
1524 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1525 | { | |
1da177e4 | 1526 | struct nfs_open_context *ctx; |
864472e9 | 1527 | int ret; |
1da177e4 | 1528 | |
864472e9 TM |
1529 | ctx = nfs4_state_find_open_context(state); |
1530 | if (IS_ERR(ctx)) | |
1531 | return PTR_ERR(ctx); | |
539cd03a | 1532 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1533 | put_nfs_open_context(ctx); |
1534 | return ret; | |
1da177e4 LT |
1535 | } |
1536 | ||
aa53ed54 JL |
1537 | /* |
1538 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1539 | * fields corresponding to attributes that were used to store the verifier. | |
1540 | * Make sure we clobber those fields in the later setattr call | |
1541 | */ | |
1542 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1543 | { | |
1544 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1545 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1546 | sattr->ia_valid |= ATTR_ATIME; | |
1547 | ||
1548 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1549 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1550 | sattr->ia_valid |= ATTR_MTIME; | |
1551 | } | |
1552 | ||
1da177e4 | 1553 | /* |
24ac23ab | 1554 | * Returns a referenced nfs4_state |
1da177e4 | 1555 | */ |
dc0b027d | 1556 | 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 |
1557 | { |
1558 | struct nfs4_state_owner *sp; | |
1559 | struct nfs4_state *state = NULL; | |
1560 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1561 | struct nfs4_opendata *opendata; |
aac00a8d | 1562 | int status; |
1da177e4 LT |
1563 | |
1564 | /* Protect against reboot recovery conflicts */ | |
1da177e4 LT |
1565 | status = -ENOMEM; |
1566 | if (!(sp = nfs4_get_state_owner(server, cred))) { | |
1567 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); | |
1568 | goto out_err; | |
1569 | } | |
58d9714a TM |
1570 | status = nfs4_recover_expired_lease(server); |
1571 | if (status != 0) | |
b4454fe1 | 1572 | goto err_put_state_owner; |
aac00a8d | 1573 | if (path->dentry->d_inode != NULL) |
dc0b027d | 1574 | nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode); |
58d9714a | 1575 | status = -ENOMEM; |
dc0b027d | 1576 | opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr); |
e56e0b78 | 1577 | if (opendata == NULL) |
95d35cb4 | 1578 | goto err_put_state_owner; |
1da177e4 | 1579 | |
aac00a8d TM |
1580 | if (path->dentry->d_inode != NULL) |
1581 | opendata->state = nfs4_get_open_state(path->dentry->d_inode, sp); | |
1582 | ||
24ac23ab | 1583 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1584 | if (status != 0) |
c6d00e63 | 1585 | goto err_opendata_put; |
1da177e4 | 1586 | |
aa53ed54 JL |
1587 | if (opendata->o_arg.open_flags & O_EXCL) |
1588 | nfs4_exclusive_attrset(opendata, sattr); | |
1589 | ||
24ac23ab | 1590 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1591 | status = PTR_ERR(state); |
1592 | if (IS_ERR(state)) | |
c6d00e63 | 1593 | goto err_opendata_put; |
c6d00e63 | 1594 | nfs4_opendata_put(opendata); |
1da177e4 | 1595 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1596 | *res = state; |
1597 | return 0; | |
c6d00e63 TM |
1598 | err_opendata_put: |
1599 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
1600 | err_put_state_owner: |
1601 | nfs4_put_state_owner(sp); | |
1da177e4 | 1602 | out_err: |
1da177e4 LT |
1603 | *res = NULL; |
1604 | return status; | |
1605 | } | |
1606 | ||
1607 | ||
dc0b027d | 1608 | 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 |
1609 | { |
1610 | struct nfs4_exception exception = { }; | |
1611 | struct nfs4_state *res; | |
1612 | int status; | |
1613 | ||
1614 | do { | |
dc0b027d | 1615 | status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res); |
1da177e4 LT |
1616 | if (status == 0) |
1617 | break; | |
1618 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1619 | * book-keeping w.r.t. state-changing operations | |
1620 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1621 | * It is actually a sign of a bug on the client or on the server. | |
1622 | * | |
1623 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1624 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1625 | * have unhashed the old state_owner for us, and that we can |
1626 | * therefore safely retry using a new one. We should still warn | |
1627 | * the user though... | |
1628 | */ | |
1629 | if (status == -NFS4ERR_BAD_SEQID) { | |
6f43ddcc TM |
1630 | printk(KERN_WARNING "NFS: v4 server %s " |
1631 | " returned a bad sequence-id error!\n", | |
1632 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1633 | exception.retry = 1; |
1634 | continue; | |
1635 | } | |
550f5747 TM |
1636 | /* |
1637 | * BAD_STATEID on OPEN means that the server cancelled our | |
1638 | * state before it received the OPEN_CONFIRM. | |
1639 | * Recover by retrying the request as per the discussion | |
1640 | * on Page 181 of RFC3530. | |
1641 | */ | |
1642 | if (status == -NFS4ERR_BAD_STATEID) { | |
1643 | exception.retry = 1; | |
1644 | continue; | |
1645 | } | |
aac00a8d TM |
1646 | if (status == -EAGAIN) { |
1647 | /* We must have found a delegation */ | |
1648 | exception.retry = 1; | |
1649 | continue; | |
1650 | } | |
1da177e4 LT |
1651 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1652 | status, &exception)); | |
1653 | } while (exception.retry); | |
1654 | return res; | |
1655 | } | |
1656 | ||
659bfcd6 TM |
1657 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1658 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1659 | struct nfs4_state *state) | |
1da177e4 | 1660 | { |
3e4f6290 | 1661 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1662 | struct nfs_setattrargs arg = { |
3e4f6290 | 1663 | .fh = NFS_FH(inode), |
1da177e4 LT |
1664 | .iap = sattr, |
1665 | .server = server, | |
1666 | .bitmask = server->attr_bitmask, | |
1667 | }; | |
1668 | struct nfs_setattrres res = { | |
1669 | .fattr = fattr, | |
1670 | .server = server, | |
1671 | }; | |
1672 | struct rpc_message msg = { | |
659bfcd6 TM |
1673 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
1674 | .rpc_argp = &arg, | |
1675 | .rpc_resp = &res, | |
1676 | .rpc_cred = cred, | |
1da177e4 | 1677 | }; |
26e976a8 | 1678 | unsigned long timestamp = jiffies; |
65e4308d | 1679 | int status; |
1da177e4 | 1680 | |
0e574af1 | 1681 | nfs_fattr_init(fattr); |
1da177e4 | 1682 | |
3e4f6290 TM |
1683 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) { |
1684 | /* Use that stateid */ | |
1685 | } else if (state != NULL) { | |
08e9eac4 TM |
1686 | nfs4_copy_stateid(&arg.stateid, state, current->files); |
1687 | } else | |
1da177e4 LT |
1688 | memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid)); |
1689 | ||
cccef3b9 | 1690 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
26e976a8 TM |
1691 | if (status == 0 && state != NULL) |
1692 | renew_lease(server, timestamp); | |
65e4308d | 1693 | return status; |
1da177e4 LT |
1694 | } |
1695 | ||
659bfcd6 TM |
1696 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1697 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1698 | struct nfs4_state *state) | |
1da177e4 | 1699 | { |
3e4f6290 | 1700 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
1701 | struct nfs4_exception exception = { }; |
1702 | int err; | |
1703 | do { | |
1704 | err = nfs4_handle_exception(server, | |
659bfcd6 | 1705 | _nfs4_do_setattr(inode, cred, fattr, sattr, state), |
1da177e4 LT |
1706 | &exception); |
1707 | } while (exception.retry); | |
1708 | return err; | |
1709 | } | |
1710 | ||
1711 | struct nfs4_closedata { | |
4a35bd41 | 1712 | struct path path; |
1da177e4 LT |
1713 | struct inode *inode; |
1714 | struct nfs4_state *state; | |
1715 | struct nfs_closeargs arg; | |
1716 | struct nfs_closeres res; | |
516a6af6 | 1717 | struct nfs_fattr fattr; |
26e976a8 | 1718 | unsigned long timestamp; |
1da177e4 LT |
1719 | }; |
1720 | ||
963d8fe5 | 1721 | static void nfs4_free_closedata(void *data) |
9512135d | 1722 | { |
963d8fe5 TM |
1723 | struct nfs4_closedata *calldata = data; |
1724 | struct nfs4_state_owner *sp = calldata->state->owner; | |
9512135d TM |
1725 | |
1726 | nfs4_put_open_state(calldata->state); | |
1727 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 1728 | nfs4_put_state_owner(sp); |
31f31db1 | 1729 | path_put(&calldata->path); |
9512135d TM |
1730 | kfree(calldata); |
1731 | } | |
1732 | ||
963d8fe5 | 1733 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 1734 | { |
963d8fe5 | 1735 | struct nfs4_closedata *calldata = data; |
1da177e4 | 1736 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
1737 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
1738 | ||
19ddab06 | 1739 | nfs4_sequence_done(server, &calldata->res.seq_res, task->tk_status); |
4ce70ada TM |
1740 | if (RPC_ASSASSINATED(task)) |
1741 | return; | |
1da177e4 LT |
1742 | /* hmm. we are done with the inode, and in the process of freeing |
1743 | * the state_owner. we keep this around to process errors | |
1744 | */ | |
1da177e4 LT |
1745 | switch (task->tk_status) { |
1746 | case 0: | |
45328c35 | 1747 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 1748 | renew_lease(server, calldata->timestamp); |
1da177e4 LT |
1749 | break; |
1750 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
1751 | case -NFS4ERR_OLD_STATEID: |
1752 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 1753 | case -NFS4ERR_EXPIRED: |
dc0b027d | 1754 | if (calldata->arg.fmode == 0) |
9e33bed5 | 1755 | break; |
1da177e4 | 1756 | default: |
9e33bed5 | 1757 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) { |
e608e79f AA |
1758 | nfs4_restart_rpc(task, server->nfs_client, |
1759 | &calldata->res.seq_res); | |
1da177e4 LT |
1760 | return; |
1761 | } | |
1762 | } | |
19ddab06 | 1763 | nfs4_sequence_free_slot(server->nfs_client, &calldata->res.seq_res); |
516a6af6 | 1764 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
1da177e4 LT |
1765 | } |
1766 | ||
4ce70ada | 1767 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 1768 | { |
4ce70ada | 1769 | struct nfs4_closedata *calldata = data; |
9512135d | 1770 | struct nfs4_state *state = calldata->state; |
003707c7 | 1771 | int clear_rd, clear_wr, clear_rdwr; |
9512135d | 1772 | |
963d8fe5 | 1773 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 1774 | return; |
003707c7 | 1775 | |
003707c7 | 1776 | clear_rd = clear_wr = clear_rdwr = 0; |
4cecb76f | 1777 | spin_lock(&state->owner->so_lock); |
003707c7 | 1778 | /* Calculate the change in open mode */ |
e7616923 | 1779 | if (state->n_rdwr == 0) { |
003707c7 | 1780 | if (state->n_rdonly == 0) { |
003707c7 TM |
1781 | clear_rd |= test_and_clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
1782 | clear_rdwr |= test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1783 | } | |
1784 | if (state->n_wronly == 0) { | |
003707c7 TM |
1785 | clear_wr |= test_and_clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
1786 | clear_rdwr |= test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1787 | } | |
e7616923 | 1788 | } |
4cecb76f | 1789 | spin_unlock(&state->owner->so_lock); |
003707c7 | 1790 | if (!clear_rd && !clear_wr && !clear_rdwr) { |
963d8fe5 TM |
1791 | /* Note: exit _without_ calling nfs4_close_done */ |
1792 | task->tk_action = NULL; | |
9512135d TM |
1793 | return; |
1794 | } | |
516a6af6 | 1795 | nfs_fattr_init(calldata->res.fattr); |
45328c35 | 1796 | if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) { |
5138fde0 | 1797 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
dc0b027d | 1798 | calldata->arg.fmode = FMODE_READ; |
45328c35 | 1799 | } else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) { |
5138fde0 | 1800 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
dc0b027d | 1801 | calldata->arg.fmode = FMODE_WRITE; |
45328c35 | 1802 | } |
26e976a8 | 1803 | calldata->timestamp = jiffies; |
19ddab06 AA |
1804 | if (nfs4_setup_sequence((NFS_SERVER(calldata->inode))->nfs_client, |
1805 | &calldata->arg.seq_args, &calldata->res.seq_res, | |
1806 | 1, task)) | |
1807 | return; | |
5138fde0 | 1808 | rpc_call_start(task); |
1da177e4 LT |
1809 | } |
1810 | ||
963d8fe5 | 1811 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 1812 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
1813 | .rpc_call_done = nfs4_close_done, |
1814 | .rpc_release = nfs4_free_closedata, | |
1815 | }; | |
1816 | ||
1da177e4 LT |
1817 | /* |
1818 | * It is possible for data to be read/written from a mem-mapped file | |
1819 | * after the sys_close call (which hits the vfs layer as a flush). | |
1820 | * This means that we can't safely call nfsv4 close on a file until | |
1821 | * the inode is cleared. This in turn means that we are not good | |
1822 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
1823 | * share state even when we are done with one of the three share | |
1824 | * stateid's in the inode. | |
1825 | * | |
1826 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
1827 | */ | |
a49c3c77 | 1828 | int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait) |
1da177e4 | 1829 | { |
4a35bd41 | 1830 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 1831 | struct nfs4_closedata *calldata; |
b39e625b TM |
1832 | struct nfs4_state_owner *sp = state->owner; |
1833 | struct rpc_task *task; | |
5138fde0 TM |
1834 | struct rpc_message msg = { |
1835 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
1836 | .rpc_cred = state->owner->so_cred, | |
1837 | }; | |
c970aa85 TM |
1838 | struct rpc_task_setup task_setup_data = { |
1839 | .rpc_client = server->client, | |
5138fde0 | 1840 | .rpc_message = &msg, |
c970aa85 | 1841 | .callback_ops = &nfs4_close_ops, |
101070ca | 1842 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1843 | .flags = RPC_TASK_ASYNC, |
1844 | }; | |
9512135d | 1845 | int status = -ENOMEM; |
1da177e4 | 1846 | |
19ddab06 | 1847 | calldata = kzalloc(sizeof(*calldata), GFP_KERNEL); |
1da177e4 | 1848 | if (calldata == NULL) |
9512135d | 1849 | goto out; |
4a35bd41 | 1850 | calldata->inode = state->inode; |
1da177e4 | 1851 | calldata->state = state; |
4a35bd41 | 1852 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 1853 | calldata->arg.stateid = &state->open_stateid; |
34dc1ad7 BH |
1854 | if (nfs4_has_session(server->nfs_client)) |
1855 | memset(calldata->arg.stateid->data, 0, 4); /* clear seqid */ | |
1da177e4 | 1856 | /* Serialization for the sequence id */ |
cee54fc9 | 1857 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid); |
9512135d TM |
1858 | if (calldata->arg.seqid == NULL) |
1859 | goto out_free_calldata; | |
dc0b027d | 1860 | calldata->arg.fmode = 0; |
a65318bf | 1861 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 1862 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 1863 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 1864 | calldata->res.server = server; |
5f7dbd5c | 1865 | calldata->res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE; |
4a35bd41 TM |
1866 | calldata->path.mnt = mntget(path->mnt); |
1867 | calldata->path.dentry = dget(path->dentry); | |
9512135d | 1868 | |
5138fde0 TM |
1869 | msg.rpc_argp = &calldata->arg, |
1870 | msg.rpc_resp = &calldata->res, | |
c970aa85 TM |
1871 | task_setup_data.callback_data = calldata; |
1872 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
1873 | if (IS_ERR(task)) |
1874 | return PTR_ERR(task); | |
a49c3c77 TM |
1875 | status = 0; |
1876 | if (wait) | |
1877 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 1878 | rpc_put_task(task); |
a49c3c77 | 1879 | return status; |
9512135d TM |
1880 | out_free_calldata: |
1881 | kfree(calldata); | |
1882 | out: | |
b39e625b TM |
1883 | nfs4_put_open_state(state); |
1884 | nfs4_put_state_owner(sp); | |
9512135d | 1885 | return status; |
1da177e4 LT |
1886 | } |
1887 | ||
dc0b027d | 1888 | static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode) |
02a913a7 TM |
1889 | { |
1890 | struct file *filp; | |
1b45c46c | 1891 | int ret; |
02a913a7 | 1892 | |
1b45c46c | 1893 | /* If the open_intent is for execute, we have an extra check to make */ |
dc0b027d | 1894 | if (fmode & FMODE_EXEC) { |
af22f94a | 1895 | ret = nfs_may_open(state->inode, |
1b45c46c TM |
1896 | state->owner->so_cred, |
1897 | nd->intent.open.flags); | |
1898 | if (ret < 0) | |
1899 | goto out_close; | |
1900 | } | |
4a35bd41 | 1901 | filp = lookup_instantiate_filp(nd, path->dentry, NULL); |
02a913a7 TM |
1902 | if (!IS_ERR(filp)) { |
1903 | struct nfs_open_context *ctx; | |
cd3758e3 | 1904 | ctx = nfs_file_open_context(filp); |
02a913a7 | 1905 | ctx->state = state; |
95cf959b TM |
1906 | return 0; |
1907 | } | |
1b45c46c TM |
1908 | ret = PTR_ERR(filp); |
1909 | out_close: | |
dc0b027d | 1910 | nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE)); |
1b45c46c | 1911 | return ret; |
02a913a7 TM |
1912 | } |
1913 | ||
1914 | struct dentry * | |
1da177e4 LT |
1915 | nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd) |
1916 | { | |
ad389da7 | 1917 | struct path path = { |
4ac91378 | 1918 | .mnt = nd->path.mnt, |
ad389da7 TM |
1919 | .dentry = dentry, |
1920 | }; | |
4ac91378 | 1921 | struct dentry *parent; |
1da177e4 LT |
1922 | struct iattr attr; |
1923 | struct rpc_cred *cred; | |
1924 | struct nfs4_state *state; | |
02a913a7 | 1925 | struct dentry *res; |
dc0b027d | 1926 | fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC); |
1da177e4 LT |
1927 | |
1928 | if (nd->flags & LOOKUP_CREATE) { | |
1929 | attr.ia_mode = nd->intent.open.create_mode; | |
1930 | attr.ia_valid = ATTR_MODE; | |
1931 | if (!IS_POSIXACL(dir)) | |
ce3b0f8d | 1932 | attr.ia_mode &= ~current_umask(); |
1da177e4 LT |
1933 | } else { |
1934 | attr.ia_valid = 0; | |
1935 | BUG_ON(nd->intent.open.flags & O_CREAT); | |
1936 | } | |
1937 | ||
98a8e323 | 1938 | cred = rpc_lookup_cred(); |
1da177e4 | 1939 | if (IS_ERR(cred)) |
02a913a7 | 1940 | return (struct dentry *)cred; |
565277f6 TM |
1941 | parent = dentry->d_parent; |
1942 | /* Protect against concurrent sillydeletes */ | |
1943 | nfs_block_sillyrename(parent); | |
dc0b027d | 1944 | state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred); |
1da177e4 | 1945 | put_rpccred(cred); |
02a913a7 | 1946 | if (IS_ERR(state)) { |
d75340cc | 1947 | if (PTR_ERR(state) == -ENOENT) { |
02a913a7 | 1948 | d_add(dentry, NULL); |
d75340cc TM |
1949 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
1950 | } | |
565277f6 | 1951 | nfs_unblock_sillyrename(parent); |
02a913a7 TM |
1952 | return (struct dentry *)state; |
1953 | } | |
24ac23ab | 1954 | res = d_add_unique(dentry, igrab(state->inode)); |
02a913a7 | 1955 | if (res != NULL) |
deee9369 | 1956 | path.dentry = res; |
d75340cc | 1957 | nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir)); |
565277f6 | 1958 | nfs_unblock_sillyrename(parent); |
dc0b027d | 1959 | nfs4_intent_set_file(nd, &path, state, fmode); |
02a913a7 | 1960 | return res; |
1da177e4 LT |
1961 | } |
1962 | ||
1963 | int | |
02a913a7 | 1964 | nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, struct nameidata *nd) |
1da177e4 | 1965 | { |
ad389da7 | 1966 | struct path path = { |
4ac91378 | 1967 | .mnt = nd->path.mnt, |
ad389da7 TM |
1968 | .dentry = dentry, |
1969 | }; | |
1da177e4 LT |
1970 | struct rpc_cred *cred; |
1971 | struct nfs4_state *state; | |
dc0b027d | 1972 | fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE); |
1da177e4 | 1973 | |
98a8e323 | 1974 | cred = rpc_lookup_cred(); |
1da177e4 LT |
1975 | if (IS_ERR(cred)) |
1976 | return PTR_ERR(cred); | |
dc0b027d | 1977 | state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred); |
1da177e4 | 1978 | put_rpccred(cred); |
02a913a7 TM |
1979 | if (IS_ERR(state)) { |
1980 | switch (PTR_ERR(state)) { | |
1981 | case -EPERM: | |
1982 | case -EACCES: | |
1983 | case -EDQUOT: | |
1984 | case -ENOSPC: | |
1985 | case -EROFS: | |
1986 | lookup_instantiate_filp(nd, (struct dentry *)state, NULL); | |
1987 | return 1; | |
b87c0adf CL |
1988 | default: |
1989 | goto out_drop; | |
02a913a7 | 1990 | } |
02a913a7 | 1991 | } |
24ac23ab | 1992 | if (state->inode == dentry->d_inode) { |
d75340cc | 1993 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
dc0b027d | 1994 | nfs4_intent_set_file(nd, &path, state, fmode); |
1da177e4 LT |
1995 | return 1; |
1996 | } | |
dc0b027d | 1997 | nfs4_close_sync(&path, state, fmode); |
02a913a7 TM |
1998 | out_drop: |
1999 | d_drop(dentry); | |
1da177e4 LT |
2000 | return 0; |
2001 | } | |
2002 | ||
1185a552 | 2003 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2004 | { |
2005 | if (ctx->state == NULL) | |
2006 | return; | |
2007 | if (is_sync) | |
2008 | nfs4_close_sync(&ctx->path, ctx->state, ctx->mode); | |
2009 | else | |
2010 | nfs4_close_state(&ctx->path, ctx->state, ctx->mode); | |
2011 | } | |
1da177e4 LT |
2012 | |
2013 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2014 | { | |
43652ad5 BH |
2015 | struct nfs4_server_caps_arg args = { |
2016 | .fhandle = fhandle, | |
2017 | }; | |
1da177e4 LT |
2018 | struct nfs4_server_caps_res res = {}; |
2019 | struct rpc_message msg = { | |
2020 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2021 | .rpc_argp = &args, |
1da177e4 LT |
2022 | .rpc_resp = &res, |
2023 | }; | |
2024 | int status; | |
2025 | ||
cccef3b9 | 2026 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2027 | if (status == 0) { |
2028 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2029 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2030 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2031 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2032 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2033 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2034 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2035 | server->caps |= NFS_CAP_ACLS; | |
2036 | if (res.has_links != 0) | |
2037 | server->caps |= NFS_CAP_HARDLINKS; | |
2038 | if (res.has_symlinks != 0) | |
2039 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2040 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2041 | server->caps |= NFS_CAP_FILEID; | |
2042 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2043 | server->caps |= NFS_CAP_MODE; | |
2044 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2045 | server->caps |= NFS_CAP_NLINK; | |
2046 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2047 | server->caps |= NFS_CAP_OWNER; | |
2048 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2049 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2050 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2051 | server->caps |= NFS_CAP_ATIME; | |
2052 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2053 | server->caps |= NFS_CAP_CTIME; | |
2054 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2055 | server->caps |= NFS_CAP_MTIME; | |
2056 | ||
a65318bf TM |
2057 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2058 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2059 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 LT |
2060 | server->acl_bitmask = res.acl_bitmask; |
2061 | } | |
cccef3b9 | 2062 | |
1da177e4 LT |
2063 | return status; |
2064 | } | |
2065 | ||
55a97593 | 2066 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2067 | { |
2068 | struct nfs4_exception exception = { }; | |
2069 | int err; | |
2070 | do { | |
2071 | err = nfs4_handle_exception(server, | |
2072 | _nfs4_server_capabilities(server, fhandle), | |
2073 | &exception); | |
2074 | } while (exception.retry); | |
2075 | return err; | |
2076 | } | |
2077 | ||
2078 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2079 | struct nfs_fsinfo *info) | |
2080 | { | |
1da177e4 LT |
2081 | struct nfs4_lookup_root_arg args = { |
2082 | .bitmask = nfs4_fattr_bitmap, | |
2083 | }; | |
2084 | struct nfs4_lookup_res res = { | |
2085 | .server = server, | |
0e574af1 | 2086 | .fattr = info->fattr, |
1da177e4 LT |
2087 | .fh = fhandle, |
2088 | }; | |
2089 | struct rpc_message msg = { | |
2090 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2091 | .rpc_argp = &args, | |
2092 | .rpc_resp = &res, | |
2093 | }; | |
008f55d0 | 2094 | |
0e574af1 | 2095 | nfs_fattr_init(info->fattr); |
fccba804 | 2096 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2097 | } |
2098 | ||
2099 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2100 | struct nfs_fsinfo *info) | |
2101 | { | |
2102 | struct nfs4_exception exception = { }; | |
2103 | int err; | |
2104 | do { | |
2105 | err = nfs4_handle_exception(server, | |
2106 | _nfs4_lookup_root(server, fhandle, info), | |
2107 | &exception); | |
2108 | } while (exception.retry); | |
2109 | return err; | |
2110 | } | |
2111 | ||
54ceac45 DH |
2112 | /* |
2113 | * get the file handle for the "/" directory on the server | |
2114 | */ | |
1da177e4 | 2115 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2116 | struct nfs_fsinfo *info) |
1da177e4 | 2117 | { |
1da177e4 LT |
2118 | int status; |
2119 | ||
1da177e4 | 2120 | status = nfs4_lookup_root(server, fhandle, info); |
1da177e4 LT |
2121 | if (status == 0) |
2122 | status = nfs4_server_capabilities(server, fhandle); | |
2123 | if (status == 0) | |
2124 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2125 | return nfs4_map_errors(status); |
1da177e4 LT |
2126 | } |
2127 | ||
6b97fd3d MN |
2128 | /* |
2129 | * Get locations and (maybe) other attributes of a referral. | |
2130 | * Note that we'll actually follow the referral later when | |
2131 | * we detect fsid mismatch in inode revalidation | |
2132 | */ | |
56659e99 | 2133 | static int nfs4_get_referral(struct inode *dir, const struct qstr *name, struct nfs_fattr *fattr, struct nfs_fh *fhandle) |
6b97fd3d MN |
2134 | { |
2135 | int status = -ENOMEM; | |
2136 | struct page *page = NULL; | |
2137 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2138 | |
2139 | page = alloc_page(GFP_KERNEL); | |
2140 | if (page == NULL) | |
2141 | goto out; | |
2142 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2143 | if (locations == NULL) | |
2144 | goto out; | |
2145 | ||
c228fd3a | 2146 | status = nfs4_proc_fs_locations(dir, name, locations, page); |
6b97fd3d MN |
2147 | if (status != 0) |
2148 | goto out; | |
2149 | /* Make sure server returned a different fsid for the referral */ | |
2150 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
3110ff80 | 2151 | dprintk("%s: server did not return a different fsid for a referral at %s\n", __func__, name->name); |
6b97fd3d MN |
2152 | status = -EIO; |
2153 | goto out; | |
2154 | } | |
2155 | ||
2156 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); | |
2157 | fattr->valid |= NFS_ATTR_FATTR_V4_REFERRAL; | |
2158 | if (!fattr->mode) | |
2159 | fattr->mode = S_IFDIR; | |
2160 | memset(fhandle, 0, sizeof(struct nfs_fh)); | |
2161 | out: | |
2162 | if (page) | |
2163 | __free_page(page); | |
2164 | if (locations) | |
2165 | kfree(locations); | |
2166 | return status; | |
2167 | } | |
2168 | ||
1da177e4 LT |
2169 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2170 | { | |
2171 | struct nfs4_getattr_arg args = { | |
2172 | .fh = fhandle, | |
2173 | .bitmask = server->attr_bitmask, | |
2174 | }; | |
2175 | struct nfs4_getattr_res res = { | |
2176 | .fattr = fattr, | |
2177 | .server = server, | |
2178 | }; | |
2179 | struct rpc_message msg = { | |
2180 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2181 | .rpc_argp = &args, | |
2182 | .rpc_resp = &res, | |
2183 | }; | |
2184 | ||
0e574af1 | 2185 | nfs_fattr_init(fattr); |
cccef3b9 | 2186 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2187 | } |
2188 | ||
2189 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2190 | { | |
2191 | struct nfs4_exception exception = { }; | |
2192 | int err; | |
2193 | do { | |
2194 | err = nfs4_handle_exception(server, | |
2195 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2196 | &exception); | |
2197 | } while (exception.retry); | |
2198 | return err; | |
2199 | } | |
2200 | ||
2201 | /* | |
2202 | * The file is not closed if it is opened due to the a request to change | |
2203 | * the size of the file. The open call will not be needed once the | |
2204 | * VFS layer lookup-intents are implemented. | |
2205 | * | |
2206 | * Close is called when the inode is destroyed. | |
2207 | * If we haven't opened the file for O_WRONLY, we | |
2208 | * need to in the size_change case to obtain a stateid. | |
2209 | * | |
2210 | * Got race? | |
2211 | * Because OPEN is always done by name in nfsv4, it is | |
2212 | * possible that we opened a different file by the same | |
2213 | * name. We can recognize this race condition, but we | |
2214 | * can't do anything about it besides returning an error. | |
2215 | * | |
2216 | * This will be fixed with VFS changes (lookup-intent). | |
2217 | */ | |
2218 | static int | |
2219 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2220 | struct iattr *sattr) | |
2221 | { | |
08e9eac4 | 2222 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2223 | struct rpc_cred *cred = NULL; |
d530838b | 2224 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2225 | int status; |
2226 | ||
0e574af1 | 2227 | nfs_fattr_init(fattr); |
1da177e4 | 2228 | |
d530838b | 2229 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2230 | if (sattr->ia_valid & ATTR_FILE) { |
2231 | struct nfs_open_context *ctx; | |
2232 | ||
2233 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2234 | if (ctx) { |
2235 | cred = ctx->cred; | |
2236 | state = ctx->state; | |
2237 | } | |
659bfcd6 | 2238 | } |
08e9eac4 | 2239 | |
659bfcd6 | 2240 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2241 | if (status == 0) |
2242 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2243 | return status; |
2244 | } | |
2245 | ||
56659e99 TM |
2246 | static int _nfs4_proc_lookupfh(struct nfs_server *server, const struct nfs_fh *dirfh, |
2247 | const struct qstr *name, struct nfs_fh *fhandle, | |
2b3de441 DH |
2248 | struct nfs_fattr *fattr) |
2249 | { | |
2250 | int status; | |
2251 | struct nfs4_lookup_arg args = { | |
2252 | .bitmask = server->attr_bitmask, | |
2253 | .dir_fh = dirfh, | |
2254 | .name = name, | |
2255 | }; | |
2256 | struct nfs4_lookup_res res = { | |
2257 | .server = server, | |
2258 | .fattr = fattr, | |
2259 | .fh = fhandle, | |
2260 | }; | |
2261 | struct rpc_message msg = { | |
2262 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2263 | .rpc_argp = &args, | |
2264 | .rpc_resp = &res, | |
2265 | }; | |
2266 | ||
2267 | nfs_fattr_init(fattr); | |
2268 | ||
2269 | dprintk("NFS call lookupfh %s\n", name->name); | |
cccef3b9 | 2270 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
2b3de441 | 2271 | dprintk("NFS reply lookupfh: %d\n", status); |
2b3de441 DH |
2272 | return status; |
2273 | } | |
2274 | ||
2275 | static int nfs4_proc_lookupfh(struct nfs_server *server, struct nfs_fh *dirfh, | |
2276 | struct qstr *name, struct nfs_fh *fhandle, | |
2277 | struct nfs_fattr *fattr) | |
2278 | { | |
2279 | struct nfs4_exception exception = { }; | |
2280 | int err; | |
2281 | do { | |
4e56e082 TM |
2282 | err = _nfs4_proc_lookupfh(server, dirfh, name, fhandle, fattr); |
2283 | /* FIXME: !!!! */ | |
2284 | if (err == -NFS4ERR_MOVED) { | |
2285 | err = -EREMOTE; | |
2286 | break; | |
2287 | } | |
2288 | err = nfs4_handle_exception(server, err, &exception); | |
2b3de441 DH |
2289 | } while (exception.retry); |
2290 | return err; | |
2291 | } | |
2292 | ||
56659e99 | 2293 | static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, |
1da177e4 LT |
2294 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2295 | { | |
4e56e082 | 2296 | int status; |
1da177e4 LT |
2297 | |
2298 | dprintk("NFS call lookup %s\n", name->name); | |
4e56e082 | 2299 | status = _nfs4_proc_lookupfh(NFS_SERVER(dir), NFS_FH(dir), name, fhandle, fattr); |
6b97fd3d MN |
2300 | if (status == -NFS4ERR_MOVED) |
2301 | status = nfs4_get_referral(dir, name, fattr, fhandle); | |
1da177e4 LT |
2302 | dprintk("NFS reply lookup: %d\n", status); |
2303 | return status; | |
2304 | } | |
2305 | ||
2306 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2307 | { | |
2308 | struct nfs4_exception exception = { }; | |
2309 | int err; | |
2310 | do { | |
2311 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2312 | _nfs4_proc_lookup(dir, name, fhandle, fattr), | |
2313 | &exception); | |
2314 | } while (exception.retry); | |
2315 | return err; | |
2316 | } | |
2317 | ||
2318 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2319 | { | |
76b32999 TM |
2320 | struct nfs_server *server = NFS_SERVER(inode); |
2321 | struct nfs_fattr fattr; | |
1da177e4 LT |
2322 | struct nfs4_accessargs args = { |
2323 | .fh = NFS_FH(inode), | |
76b32999 TM |
2324 | .bitmask = server->attr_bitmask, |
2325 | }; | |
2326 | struct nfs4_accessres res = { | |
2327 | .server = server, | |
2328 | .fattr = &fattr, | |
1da177e4 | 2329 | }; |
1da177e4 LT |
2330 | struct rpc_message msg = { |
2331 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2332 | .rpc_argp = &args, | |
2333 | .rpc_resp = &res, | |
2334 | .rpc_cred = entry->cred, | |
2335 | }; | |
2336 | int mode = entry->mask; | |
2337 | int status; | |
2338 | ||
2339 | /* | |
2340 | * Determine which access bits we want to ask for... | |
2341 | */ | |
2342 | if (mode & MAY_READ) | |
2343 | args.access |= NFS4_ACCESS_READ; | |
2344 | if (S_ISDIR(inode->i_mode)) { | |
2345 | if (mode & MAY_WRITE) | |
2346 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2347 | if (mode & MAY_EXEC) | |
2348 | args.access |= NFS4_ACCESS_LOOKUP; | |
2349 | } else { | |
2350 | if (mode & MAY_WRITE) | |
2351 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2352 | if (mode & MAY_EXEC) | |
2353 | args.access |= NFS4_ACCESS_EXECUTE; | |
2354 | } | |
76b32999 | 2355 | nfs_fattr_init(&fattr); |
cccef3b9 | 2356 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2357 | if (!status) { |
2358 | entry->mask = 0; | |
2359 | if (res.access & NFS4_ACCESS_READ) | |
2360 | entry->mask |= MAY_READ; | |
2361 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
2362 | entry->mask |= MAY_WRITE; | |
2363 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
2364 | entry->mask |= MAY_EXEC; | |
76b32999 | 2365 | nfs_refresh_inode(inode, &fattr); |
1da177e4 LT |
2366 | } |
2367 | return status; | |
2368 | } | |
2369 | ||
2370 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2371 | { | |
2372 | struct nfs4_exception exception = { }; | |
2373 | int err; | |
2374 | do { | |
2375 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2376 | _nfs4_proc_access(inode, entry), | |
2377 | &exception); | |
2378 | } while (exception.retry); | |
2379 | return err; | |
2380 | } | |
2381 | ||
2382 | /* | |
2383 | * TODO: For the time being, we don't try to get any attributes | |
2384 | * along with any of the zero-copy operations READ, READDIR, | |
2385 | * READLINK, WRITE. | |
2386 | * | |
2387 | * In the case of the first three, we want to put the GETATTR | |
2388 | * after the read-type operation -- this is because it is hard | |
2389 | * to predict the length of a GETATTR response in v4, and thus | |
2390 | * align the READ data correctly. This means that the GETATTR | |
2391 | * may end up partially falling into the page cache, and we should | |
2392 | * shift it into the 'tail' of the xdr_buf before processing. | |
2393 | * To do this efficiently, we need to know the total length | |
2394 | * of data received, which doesn't seem to be available outside | |
2395 | * of the RPC layer. | |
2396 | * | |
2397 | * In the case of WRITE, we also want to put the GETATTR after | |
2398 | * the operation -- in this case because we want to make sure | |
2399 | * we get the post-operation mtime and size. This means that | |
2400 | * we can't use xdr_encode_pages() as written: we need a variant | |
2401 | * of it which would leave room in the 'tail' iovec. | |
2402 | * | |
2403 | * Both of these changes to the XDR layer would in fact be quite | |
2404 | * minor, but I decided to leave them for a subsequent patch. | |
2405 | */ | |
2406 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2407 | unsigned int pgbase, unsigned int pglen) | |
2408 | { | |
2409 | struct nfs4_readlink args = { | |
2410 | .fh = NFS_FH(inode), | |
2411 | .pgbase = pgbase, | |
2412 | .pglen = pglen, | |
2413 | .pages = &page, | |
2414 | }; | |
f50c7000 | 2415 | struct nfs4_readlink_res res; |
1da177e4 LT |
2416 | struct rpc_message msg = { |
2417 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2418 | .rpc_argp = &args, | |
f50c7000 | 2419 | .rpc_resp = &res, |
1da177e4 LT |
2420 | }; |
2421 | ||
cccef3b9 | 2422 | return nfs4_call_sync(NFS_SERVER(inode), &msg, &args, &res, 0); |
1da177e4 LT |
2423 | } |
2424 | ||
2425 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2426 | unsigned int pgbase, unsigned int pglen) | |
2427 | { | |
2428 | struct nfs4_exception exception = { }; | |
2429 | int err; | |
2430 | do { | |
2431 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2432 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2433 | &exception); | |
2434 | } while (exception.retry); | |
2435 | return err; | |
2436 | } | |
2437 | ||
1da177e4 LT |
2438 | /* |
2439 | * Got race? | |
2440 | * We will need to arrange for the VFS layer to provide an atomic open. | |
2441 | * Until then, this create/open method is prone to inefficiency and race | |
2442 | * conditions due to the lookup, create, and open VFS calls from sys_open() | |
2443 | * placed on the wire. | |
2444 | * | |
2445 | * Given the above sorry state of affairs, I'm simply sending an OPEN. | |
2446 | * The file will be opened again in the subsequent VFS open call | |
2447 | * (nfs4_proc_file_open). | |
2448 | * | |
2449 | * The open for read will just hang around to be used by any process that | |
2450 | * opens the file O_RDONLY. This will all be resolved with the VFS changes. | |
2451 | */ | |
2452 | ||
2453 | static int | |
2454 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
02a913a7 | 2455 | int flags, struct nameidata *nd) |
1da177e4 | 2456 | { |
ad389da7 | 2457 | struct path path = { |
4ac91378 | 2458 | .mnt = nd->path.mnt, |
ad389da7 TM |
2459 | .dentry = dentry, |
2460 | }; | |
1da177e4 LT |
2461 | struct nfs4_state *state; |
2462 | struct rpc_cred *cred; | |
dc0b027d | 2463 | fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE); |
1da177e4 LT |
2464 | int status = 0; |
2465 | ||
98a8e323 | 2466 | cred = rpc_lookup_cred(); |
1da177e4 LT |
2467 | if (IS_ERR(cred)) { |
2468 | status = PTR_ERR(cred); | |
2469 | goto out; | |
2470 | } | |
dc0b027d | 2471 | state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred); |
d4d9cdcb | 2472 | d_drop(dentry); |
1da177e4 LT |
2473 | if (IS_ERR(state)) { |
2474 | status = PTR_ERR(state); | |
659bfcd6 | 2475 | goto out_putcred; |
1da177e4 | 2476 | } |
d4d9cdcb | 2477 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2478 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
1da177e4 LT |
2479 | if (flags & O_EXCL) { |
2480 | struct nfs_fattr fattr; | |
659bfcd6 | 2481 | status = nfs4_do_setattr(state->inode, cred, &fattr, sattr, state); |
02a913a7 | 2482 | if (status == 0) |
65e4308d | 2483 | nfs_setattr_update_inode(state->inode, sattr); |
aa53ed54 | 2484 | nfs_post_op_update_inode(state->inode, &fattr); |
02a913a7 | 2485 | } |
ad389da7 | 2486 | if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0) |
dc0b027d | 2487 | status = nfs4_intent_set_file(nd, &path, state, fmode); |
02a913a7 | 2488 | else |
dc0b027d | 2489 | nfs4_close_sync(&path, state, fmode); |
659bfcd6 TM |
2490 | out_putcred: |
2491 | put_rpccred(cred); | |
1da177e4 LT |
2492 | out: |
2493 | return status; | |
2494 | } | |
2495 | ||
2496 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2497 | { | |
16e42959 | 2498 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2499 | struct nfs_removeargs args = { |
1da177e4 | 2500 | .fh = NFS_FH(dir), |
4fdc17b2 TM |
2501 | .name.len = name->len, |
2502 | .name.name = name->name, | |
16e42959 TM |
2503 | .bitmask = server->attr_bitmask, |
2504 | }; | |
4fdc17b2 | 2505 | struct nfs_removeres res = { |
16e42959 | 2506 | .server = server, |
1da177e4 | 2507 | }; |
1da177e4 | 2508 | struct rpc_message msg = { |
4fdc17b2 TM |
2509 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2510 | .rpc_argp = &args, | |
2511 | .rpc_resp = &res, | |
1da177e4 LT |
2512 | }; |
2513 | int status; | |
2514 | ||
4fdc17b2 | 2515 | nfs_fattr_init(&res.dir_attr); |
cccef3b9 | 2516 | status = nfs4_call_sync(server, &msg, &args, &res, 1); |
16e42959 TM |
2517 | if (status == 0) { |
2518 | update_changeattr(dir, &res.cinfo); | |
4fdc17b2 | 2519 | nfs_post_op_update_inode(dir, &res.dir_attr); |
16e42959 | 2520 | } |
1da177e4 LT |
2521 | return status; |
2522 | } | |
2523 | ||
2524 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2525 | { | |
2526 | struct nfs4_exception exception = { }; | |
2527 | int err; | |
2528 | do { | |
2529 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2530 | _nfs4_proc_remove(dir, name), | |
2531 | &exception); | |
2532 | } while (exception.retry); | |
2533 | return err; | |
2534 | } | |
2535 | ||
e4eff1a6 | 2536 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2537 | { |
e4eff1a6 TM |
2538 | struct nfs_server *server = NFS_SERVER(dir); |
2539 | struct nfs_removeargs *args = msg->rpc_argp; | |
2540 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2541 | |
a65318bf | 2542 | args->bitmask = server->cache_consistency_bitmask; |
e4eff1a6 | 2543 | res->server = server; |
1da177e4 | 2544 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
1da177e4 LT |
2545 | } |
2546 | ||
e4eff1a6 | 2547 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2548 | { |
e4eff1a6 TM |
2549 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2550 | ||
472cfbd9 | 2551 | nfs4_sequence_done(res->server, &res->seq_res, task->tk_status); |
9e33bed5 | 2552 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 | 2553 | return 0; |
472cfbd9 | 2554 | nfs4_sequence_free_slot(res->server->nfs_client, &res->seq_res); |
e4eff1a6 TM |
2555 | update_changeattr(dir, &res->cinfo); |
2556 | nfs_post_op_update_inode(dir, &res->dir_attr); | |
2557 | return 1; | |
1da177e4 LT |
2558 | } |
2559 | ||
2560 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2561 | struct inode *new_dir, struct qstr *new_name) | |
2562 | { | |
6caf2c82 | 2563 | struct nfs_server *server = NFS_SERVER(old_dir); |
1da177e4 LT |
2564 | struct nfs4_rename_arg arg = { |
2565 | .old_dir = NFS_FH(old_dir), | |
2566 | .new_dir = NFS_FH(new_dir), | |
2567 | .old_name = old_name, | |
2568 | .new_name = new_name, | |
6caf2c82 TM |
2569 | .bitmask = server->attr_bitmask, |
2570 | }; | |
2571 | struct nfs_fattr old_fattr, new_fattr; | |
2572 | struct nfs4_rename_res res = { | |
2573 | .server = server, | |
2574 | .old_fattr = &old_fattr, | |
2575 | .new_fattr = &new_fattr, | |
1da177e4 | 2576 | }; |
1da177e4 LT |
2577 | struct rpc_message msg = { |
2578 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2579 | .rpc_argp = &arg, | |
2580 | .rpc_resp = &res, | |
2581 | }; | |
2582 | int status; | |
2583 | ||
6caf2c82 TM |
2584 | nfs_fattr_init(res.old_fattr); |
2585 | nfs_fattr_init(res.new_fattr); | |
cccef3b9 | 2586 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
1da177e4 LT |
2587 | |
2588 | if (!status) { | |
2589 | update_changeattr(old_dir, &res.old_cinfo); | |
6caf2c82 | 2590 | nfs_post_op_update_inode(old_dir, res.old_fattr); |
1da177e4 | 2591 | update_changeattr(new_dir, &res.new_cinfo); |
6caf2c82 | 2592 | nfs_post_op_update_inode(new_dir, res.new_fattr); |
1da177e4 LT |
2593 | } |
2594 | return status; | |
2595 | } | |
2596 | ||
2597 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2598 | struct inode *new_dir, struct qstr *new_name) | |
2599 | { | |
2600 | struct nfs4_exception exception = { }; | |
2601 | int err; | |
2602 | do { | |
2603 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2604 | _nfs4_proc_rename(old_dir, old_name, | |
2605 | new_dir, new_name), | |
2606 | &exception); | |
2607 | } while (exception.retry); | |
2608 | return err; | |
2609 | } | |
2610 | ||
2611 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2612 | { | |
91ba2eee | 2613 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2614 | struct nfs4_link_arg arg = { |
2615 | .fh = NFS_FH(inode), | |
2616 | .dir_fh = NFS_FH(dir), | |
2617 | .name = name, | |
91ba2eee TM |
2618 | .bitmask = server->attr_bitmask, |
2619 | }; | |
2620 | struct nfs_fattr fattr, dir_attr; | |
2621 | struct nfs4_link_res res = { | |
2622 | .server = server, | |
2623 | .fattr = &fattr, | |
2624 | .dir_attr = &dir_attr, | |
1da177e4 | 2625 | }; |
1da177e4 LT |
2626 | struct rpc_message msg = { |
2627 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
2628 | .rpc_argp = &arg, | |
91ba2eee | 2629 | .rpc_resp = &res, |
1da177e4 LT |
2630 | }; |
2631 | int status; | |
2632 | ||
91ba2eee TM |
2633 | nfs_fattr_init(res.fattr); |
2634 | nfs_fattr_init(res.dir_attr); | |
cccef3b9 | 2635 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
91ba2eee TM |
2636 | if (!status) { |
2637 | update_changeattr(dir, &res.cinfo); | |
2638 | nfs_post_op_update_inode(dir, res.dir_attr); | |
73a3d07c | 2639 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 2640 | } |
1da177e4 LT |
2641 | |
2642 | return status; | |
2643 | } | |
2644 | ||
2645 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2646 | { | |
2647 | struct nfs4_exception exception = { }; | |
2648 | int err; | |
2649 | do { | |
2650 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2651 | _nfs4_proc_link(inode, dir, name), | |
2652 | &exception); | |
2653 | } while (exception.retry); | |
2654 | return err; | |
2655 | } | |
2656 | ||
57dc9a57 TM |
2657 | struct nfs4_createdata { |
2658 | struct rpc_message msg; | |
2659 | struct nfs4_create_arg arg; | |
2660 | struct nfs4_create_res res; | |
2661 | struct nfs_fh fh; | |
2662 | struct nfs_fattr fattr; | |
2663 | struct nfs_fattr dir_fattr; | |
2664 | }; | |
2665 | ||
2666 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
2667 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
2668 | { | |
2669 | struct nfs4_createdata *data; | |
2670 | ||
2671 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
2672 | if (data != NULL) { | |
2673 | struct nfs_server *server = NFS_SERVER(dir); | |
2674 | ||
2675 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
2676 | data->msg.rpc_argp = &data->arg; | |
2677 | data->msg.rpc_resp = &data->res; | |
2678 | data->arg.dir_fh = NFS_FH(dir); | |
2679 | data->arg.server = server; | |
2680 | data->arg.name = name; | |
2681 | data->arg.attrs = sattr; | |
2682 | data->arg.ftype = ftype; | |
2683 | data->arg.bitmask = server->attr_bitmask; | |
2684 | data->res.server = server; | |
2685 | data->res.fh = &data->fh; | |
2686 | data->res.fattr = &data->fattr; | |
2687 | data->res.dir_fattr = &data->dir_fattr; | |
2688 | nfs_fattr_init(data->res.fattr); | |
2689 | nfs_fattr_init(data->res.dir_fattr); | |
2690 | } | |
2691 | return data; | |
2692 | } | |
2693 | ||
2694 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
2695 | { | |
cccef3b9 AA |
2696 | int status = nfs4_call_sync(NFS_SERVER(dir), &data->msg, |
2697 | &data->arg, &data->res, 1); | |
57dc9a57 TM |
2698 | if (status == 0) { |
2699 | update_changeattr(dir, &data->res.dir_cinfo); | |
2700 | nfs_post_op_update_inode(dir, data->res.dir_fattr); | |
2701 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); | |
2702 | } | |
2703 | return status; | |
2704 | } | |
2705 | ||
2706 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
2707 | { | |
2708 | kfree(data); | |
2709 | } | |
2710 | ||
4f390c15 | 2711 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2712 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 2713 | { |
57dc9a57 TM |
2714 | struct nfs4_createdata *data; |
2715 | int status = -ENAMETOOLONG; | |
1da177e4 | 2716 | |
94a6d753 | 2717 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 2718 | goto out; |
4f390c15 | 2719 | |
57dc9a57 TM |
2720 | status = -ENOMEM; |
2721 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
2722 | if (data == NULL) | |
2723 | goto out; | |
2724 | ||
2725 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
2726 | data->arg.u.symlink.pages = &page; | |
2727 | data->arg.u.symlink.len = len; | |
1da177e4 | 2728 | |
57dc9a57 TM |
2729 | status = nfs4_do_create(dir, dentry, data); |
2730 | ||
2731 | nfs4_free_createdata(data); | |
2732 | out: | |
1da177e4 LT |
2733 | return status; |
2734 | } | |
2735 | ||
4f390c15 | 2736 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2737 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
2738 | { |
2739 | struct nfs4_exception exception = { }; | |
2740 | int err; | |
2741 | do { | |
2742 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
2743 | _nfs4_proc_symlink(dir, dentry, page, |
2744 | len, sattr), | |
1da177e4 LT |
2745 | &exception); |
2746 | } while (exception.retry); | |
2747 | return err; | |
2748 | } | |
2749 | ||
2750 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2751 | struct iattr *sattr) | |
2752 | { | |
57dc9a57 TM |
2753 | struct nfs4_createdata *data; |
2754 | int status = -ENOMEM; | |
1da177e4 | 2755 | |
57dc9a57 TM |
2756 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
2757 | if (data == NULL) | |
2758 | goto out; | |
2759 | ||
2760 | status = nfs4_do_create(dir, dentry, data); | |
2761 | ||
2762 | nfs4_free_createdata(data); | |
2763 | out: | |
1da177e4 LT |
2764 | return status; |
2765 | } | |
2766 | ||
2767 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2768 | struct iattr *sattr) | |
2769 | { | |
2770 | struct nfs4_exception exception = { }; | |
2771 | int err; | |
2772 | do { | |
2773 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2774 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
2775 | &exception); | |
2776 | } while (exception.retry); | |
2777 | return err; | |
2778 | } | |
2779 | ||
2780 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
2781 | u64 cookie, struct page *page, unsigned int count, int plus) | |
2782 | { | |
2783 | struct inode *dir = dentry->d_inode; | |
2784 | struct nfs4_readdir_arg args = { | |
2785 | .fh = NFS_FH(dir), | |
2786 | .pages = &page, | |
2787 | .pgbase = 0, | |
2788 | .count = count, | |
96d25e53 | 2789 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
1da177e4 LT |
2790 | }; |
2791 | struct nfs4_readdir_res res; | |
2792 | struct rpc_message msg = { | |
2793 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
2794 | .rpc_argp = &args, | |
2795 | .rpc_resp = &res, | |
2796 | .rpc_cred = cred, | |
2797 | }; | |
2798 | int status; | |
2799 | ||
3110ff80 | 2800 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
2801 | dentry->d_parent->d_name.name, |
2802 | dentry->d_name.name, | |
2803 | (unsigned long long)cookie); | |
1da177e4 LT |
2804 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
2805 | res.pgbase = args.pgbase; | |
cccef3b9 | 2806 | status = nfs4_call_sync(NFS_SERVER(dir), &msg, &args, &res, 0); |
1da177e4 LT |
2807 | if (status == 0) |
2808 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); | |
c4812998 TM |
2809 | |
2810 | nfs_invalidate_atime(dir); | |
2811 | ||
3110ff80 | 2812 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
2813 | return status; |
2814 | } | |
2815 | ||
2816 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
2817 | u64 cookie, struct page *page, unsigned int count, int plus) | |
2818 | { | |
2819 | struct nfs4_exception exception = { }; | |
2820 | int err; | |
2821 | do { | |
2822 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
2823 | _nfs4_proc_readdir(dentry, cred, cookie, | |
2824 | page, count, plus), | |
2825 | &exception); | |
2826 | } while (exception.retry); | |
2827 | return err; | |
2828 | } | |
2829 | ||
2830 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2831 | struct iattr *sattr, dev_t rdev) | |
2832 | { | |
57dc9a57 TM |
2833 | struct nfs4_createdata *data; |
2834 | int mode = sattr->ia_mode; | |
2835 | int status = -ENOMEM; | |
1da177e4 LT |
2836 | |
2837 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
2838 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
57dc9a57 TM |
2839 | |
2840 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); | |
2841 | if (data == NULL) | |
2842 | goto out; | |
2843 | ||
1da177e4 | 2844 | if (S_ISFIFO(mode)) |
57dc9a57 | 2845 | data->arg.ftype = NF4FIFO; |
1da177e4 | 2846 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
2847 | data->arg.ftype = NF4BLK; |
2848 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
2849 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
2850 | } |
2851 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
2852 | data->arg.ftype = NF4CHR; |
2853 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
2854 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 | 2855 | } |
1da177e4 | 2856 | |
57dc9a57 TM |
2857 | status = nfs4_do_create(dir, dentry, data); |
2858 | ||
2859 | nfs4_free_createdata(data); | |
2860 | out: | |
1da177e4 LT |
2861 | return status; |
2862 | } | |
2863 | ||
2864 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2865 | struct iattr *sattr, dev_t rdev) | |
2866 | { | |
2867 | struct nfs4_exception exception = { }; | |
2868 | int err; | |
2869 | do { | |
2870 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2871 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
2872 | &exception); | |
2873 | } while (exception.retry); | |
2874 | return err; | |
2875 | } | |
2876 | ||
2877 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
2878 | struct nfs_fsstat *fsstat) | |
2879 | { | |
2880 | struct nfs4_statfs_arg args = { | |
2881 | .fh = fhandle, | |
2882 | .bitmask = server->attr_bitmask, | |
2883 | }; | |
24ad148a BH |
2884 | struct nfs4_statfs_res res = { |
2885 | .fsstat = fsstat, | |
2886 | }; | |
1da177e4 LT |
2887 | struct rpc_message msg = { |
2888 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
2889 | .rpc_argp = &args, | |
24ad148a | 2890 | .rpc_resp = &res, |
1da177e4 LT |
2891 | }; |
2892 | ||
0e574af1 | 2893 | nfs_fattr_init(fsstat->fattr); |
cccef3b9 | 2894 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2895 | } |
2896 | ||
2897 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
2898 | { | |
2899 | struct nfs4_exception exception = { }; | |
2900 | int err; | |
2901 | do { | |
2902 | err = nfs4_handle_exception(server, | |
2903 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
2904 | &exception); | |
2905 | } while (exception.retry); | |
2906 | return err; | |
2907 | } | |
2908 | ||
2909 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
2910 | struct nfs_fsinfo *fsinfo) | |
2911 | { | |
2912 | struct nfs4_fsinfo_arg args = { | |
2913 | .fh = fhandle, | |
2914 | .bitmask = server->attr_bitmask, | |
2915 | }; | |
3dda5e43 BH |
2916 | struct nfs4_fsinfo_res res = { |
2917 | .fsinfo = fsinfo, | |
2918 | }; | |
1da177e4 LT |
2919 | struct rpc_message msg = { |
2920 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
2921 | .rpc_argp = &args, | |
3dda5e43 | 2922 | .rpc_resp = &res, |
1da177e4 LT |
2923 | }; |
2924 | ||
cccef3b9 | 2925 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2926 | } |
2927 | ||
2928 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
2929 | { | |
2930 | struct nfs4_exception exception = { }; | |
2931 | int err; | |
2932 | ||
2933 | do { | |
2934 | err = nfs4_handle_exception(server, | |
2935 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
2936 | &exception); | |
2937 | } while (exception.retry); | |
2938 | return err; | |
2939 | } | |
2940 | ||
2941 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
2942 | { | |
0e574af1 | 2943 | nfs_fattr_init(fsinfo->fattr); |
1da177e4 LT |
2944 | return nfs4_do_fsinfo(server, fhandle, fsinfo); |
2945 | } | |
2946 | ||
2947 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
2948 | struct nfs_pathconf *pathconf) | |
2949 | { | |
2950 | struct nfs4_pathconf_arg args = { | |
2951 | .fh = fhandle, | |
2952 | .bitmask = server->attr_bitmask, | |
2953 | }; | |
d45b2989 BH |
2954 | struct nfs4_pathconf_res res = { |
2955 | .pathconf = pathconf, | |
2956 | }; | |
1da177e4 LT |
2957 | struct rpc_message msg = { |
2958 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
2959 | .rpc_argp = &args, | |
d45b2989 | 2960 | .rpc_resp = &res, |
1da177e4 LT |
2961 | }; |
2962 | ||
2963 | /* None of the pathconf attributes are mandatory to implement */ | |
2964 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
2965 | memset(pathconf, 0, sizeof(*pathconf)); | |
2966 | return 0; | |
2967 | } | |
2968 | ||
0e574af1 | 2969 | nfs_fattr_init(pathconf->fattr); |
cccef3b9 | 2970 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2971 | } |
2972 | ||
2973 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
2974 | struct nfs_pathconf *pathconf) | |
2975 | { | |
2976 | struct nfs4_exception exception = { }; | |
2977 | int err; | |
2978 | ||
2979 | do { | |
2980 | err = nfs4_handle_exception(server, | |
2981 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
2982 | &exception); | |
2983 | } while (exception.retry); | |
2984 | return err; | |
2985 | } | |
2986 | ||
ec06c096 | 2987 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 2988 | { |
ec06c096 | 2989 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 2990 | |
f11c88af AA |
2991 | dprintk("--> %s\n", __func__); |
2992 | ||
2993 | /* nfs4_sequence_free_slot called in the read rpc_call_done */ | |
2994 | nfs4_sequence_done(server, &data->res.seq_res, task->tk_status); | |
2995 | ||
9e33bed5 | 2996 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
e608e79f | 2997 | nfs4_restart_rpc(task, server->nfs_client, &data->res.seq_res); |
ec06c096 | 2998 | return -EAGAIN; |
1da177e4 | 2999 | } |
8850df99 TM |
3000 | |
3001 | nfs_invalidate_atime(data->inode); | |
1da177e4 | 3002 | if (task->tk_status > 0) |
ec06c096 | 3003 | renew_lease(server, data->timestamp); |
36bbe342 AA |
3004 | else if (task->tk_status < 0) |
3005 | nfs4_sequence_free_slot(server->nfs_client, &data->res.seq_res); | |
3006 | ||
ec06c096 | 3007 | return 0; |
1da177e4 LT |
3008 | } |
3009 | ||
bdc7f021 | 3010 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3011 | { |
1da177e4 | 3012 | data->timestamp = jiffies; |
bdc7f021 | 3013 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
1da177e4 LT |
3014 | } |
3015 | ||
788e7a89 | 3016 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3017 | { |
1da177e4 LT |
3018 | struct inode *inode = data->inode; |
3019 | ||
def6ed7e AA |
3020 | /* slot is freed in nfs_writeback_done */ |
3021 | nfs4_sequence_done(NFS_SERVER(inode), &data->res.seq_res, | |
3022 | task->tk_status); | |
3023 | ||
9e33bed5 | 3024 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
e608e79f AA |
3025 | nfs4_restart_rpc(task, NFS_SERVER(inode)->nfs_client, |
3026 | &data->res.seq_res); | |
788e7a89 | 3027 | return -EAGAIN; |
1da177e4 | 3028 | } |
4f9838c7 | 3029 | if (task->tk_status >= 0) { |
1da177e4 | 3030 | renew_lease(NFS_SERVER(inode), data->timestamp); |
70ca8852 | 3031 | nfs_post_op_update_inode_force_wcc(inode, data->res.fattr); |
4f9838c7 | 3032 | } |
788e7a89 | 3033 | return 0; |
1da177e4 LT |
3034 | } |
3035 | ||
bdc7f021 | 3036 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3037 | { |
bdc7f021 TM |
3038 | struct nfs_server *server = NFS_SERVER(data->inode); |
3039 | ||
a65318bf | 3040 | data->args.bitmask = server->cache_consistency_bitmask; |
4f9838c7 | 3041 | data->res.server = server; |
1da177e4 LT |
3042 | data->timestamp = jiffies; |
3043 | ||
bdc7f021 | 3044 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
1da177e4 LT |
3045 | } |
3046 | ||
788e7a89 | 3047 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3048 | { |
1da177e4 LT |
3049 | struct inode *inode = data->inode; |
3050 | ||
21d9a851 AA |
3051 | nfs4_sequence_done(NFS_SERVER(inode), &data->res.seq_res, |
3052 | task->tk_status); | |
9e33bed5 | 3053 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
e608e79f AA |
3054 | nfs4_restart_rpc(task, NFS_SERVER(inode)->nfs_client, |
3055 | &data->res.seq_res); | |
788e7a89 | 3056 | return -EAGAIN; |
1da177e4 | 3057 | } |
21d9a851 AA |
3058 | nfs4_sequence_free_slot(NFS_SERVER(inode)->nfs_client, |
3059 | &data->res.seq_res); | |
9e08a3c5 | 3060 | nfs_refresh_inode(inode, data->res.fattr); |
788e7a89 | 3061 | return 0; |
1da177e4 LT |
3062 | } |
3063 | ||
bdc7f021 | 3064 | static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3065 | { |
788e7a89 | 3066 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 3067 | |
a65318bf | 3068 | data->args.bitmask = server->cache_consistency_bitmask; |
4f9838c7 | 3069 | data->res.server = server; |
bdc7f021 | 3070 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
1da177e4 LT |
3071 | } |
3072 | ||
3073 | /* | |
3074 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3075 | * standalone procedure for queueing an asynchronous RENEW. | |
3076 | */ | |
963d8fe5 | 3077 | static void nfs4_renew_done(struct rpc_task *task, void *data) |
1da177e4 | 3078 | { |
adfa6f98 | 3079 | struct nfs_client *clp = (struct nfs_client *)task->tk_msg.rpc_argp; |
963d8fe5 | 3080 | unsigned long timestamp = (unsigned long)data; |
1da177e4 LT |
3081 | |
3082 | if (task->tk_status < 0) { | |
95baa25c TM |
3083 | /* Unless we're shutting down, schedule state recovery! */ |
3084 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) != 0) | |
3085 | nfs4_schedule_state_recovery(clp); | |
1da177e4 LT |
3086 | return; |
3087 | } | |
3088 | spin_lock(&clp->cl_lock); | |
3089 | if (time_before(clp->cl_last_renewal,timestamp)) | |
3090 | clp->cl_last_renewal = timestamp; | |
3091 | spin_unlock(&clp->cl_lock); | |
3092 | } | |
3093 | ||
963d8fe5 TM |
3094 | static const struct rpc_call_ops nfs4_renew_ops = { |
3095 | .rpc_call_done = nfs4_renew_done, | |
3096 | }; | |
3097 | ||
adfa6f98 | 3098 | int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3099 | { |
3100 | struct rpc_message msg = { | |
3101 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3102 | .rpc_argp = clp, | |
b4454fe1 | 3103 | .rpc_cred = cred, |
1da177e4 LT |
3104 | }; |
3105 | ||
3106 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, | |
963d8fe5 | 3107 | &nfs4_renew_ops, (void *)jiffies); |
1da177e4 LT |
3108 | } |
3109 | ||
adfa6f98 | 3110 | int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3111 | { |
3112 | struct rpc_message msg = { | |
3113 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3114 | .rpc_argp = clp, | |
b4454fe1 | 3115 | .rpc_cred = cred, |
1da177e4 LT |
3116 | }; |
3117 | unsigned long now = jiffies; | |
3118 | int status; | |
3119 | ||
3120 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3121 | if (status < 0) | |
3122 | return status; | |
3123 | spin_lock(&clp->cl_lock); | |
3124 | if (time_before(clp->cl_last_renewal,now)) | |
3125 | clp->cl_last_renewal = now; | |
3126 | spin_unlock(&clp->cl_lock); | |
3127 | return 0; | |
3128 | } | |
3129 | ||
aa1870af BF |
3130 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3131 | { | |
3132 | return (server->caps & NFS_CAP_ACLS) | |
3133 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3134 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3135 | } | |
3136 | ||
3137 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
3138 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
3139 | * the stack. | |
3140 | */ | |
3141 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
3142 | ||
3143 | static void buf_to_pages(const void *buf, size_t buflen, | |
3144 | struct page **pages, unsigned int *pgbase) | |
3145 | { | |
3146 | const void *p = buf; | |
3147 | ||
3148 | *pgbase = offset_in_page(buf); | |
3149 | p -= *pgbase; | |
3150 | while (p < buf + buflen) { | |
3151 | *(pages++) = virt_to_page(p); | |
3152 | p += PAGE_CACHE_SIZE; | |
3153 | } | |
3154 | } | |
3155 | ||
e50a1c2e BF |
3156 | struct nfs4_cached_acl { |
3157 | int cached; | |
3158 | size_t len; | |
3e9d4154 | 3159 | char data[0]; |
e50a1c2e BF |
3160 | }; |
3161 | ||
3162 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3163 | { | |
3164 | struct nfs_inode *nfsi = NFS_I(inode); | |
3165 | ||
3166 | spin_lock(&inode->i_lock); | |
3167 | kfree(nfsi->nfs4_acl); | |
3168 | nfsi->nfs4_acl = acl; | |
3169 | spin_unlock(&inode->i_lock); | |
3170 | } | |
3171 | ||
3172 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3173 | { | |
3174 | nfs4_set_cached_acl(inode, NULL); | |
3175 | } | |
3176 | ||
3177 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3178 | { | |
3179 | struct nfs_inode *nfsi = NFS_I(inode); | |
3180 | struct nfs4_cached_acl *acl; | |
3181 | int ret = -ENOENT; | |
3182 | ||
3183 | spin_lock(&inode->i_lock); | |
3184 | acl = nfsi->nfs4_acl; | |
3185 | if (acl == NULL) | |
3186 | goto out; | |
3187 | if (buf == NULL) /* user is just asking for length */ | |
3188 | goto out_len; | |
3189 | if (acl->cached == 0) | |
3190 | goto out; | |
3191 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3192 | if (acl->len > buflen) | |
3193 | goto out; | |
3194 | memcpy(buf, acl->data, acl->len); | |
3195 | out_len: | |
3196 | ret = acl->len; | |
3197 | out: | |
3198 | spin_unlock(&inode->i_lock); | |
3199 | return ret; | |
3200 | } | |
3201 | ||
3202 | static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len) | |
3203 | { | |
3204 | struct nfs4_cached_acl *acl; | |
3205 | ||
3206 | if (buf && acl_len <= PAGE_SIZE) { | |
3207 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); | |
3208 | if (acl == NULL) | |
3209 | goto out; | |
3210 | acl->cached = 1; | |
3211 | memcpy(acl->data, buf, acl_len); | |
3212 | } else { | |
3213 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3214 | if (acl == NULL) | |
3215 | goto out; | |
3216 | acl->cached = 0; | |
3217 | } | |
3218 | acl->len = acl_len; | |
3219 | out: | |
3220 | nfs4_set_cached_acl(inode, acl); | |
3221 | } | |
3222 | ||
16b4289c | 3223 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3224 | { |
aa1870af BF |
3225 | struct page *pages[NFS4ACL_MAXPAGES]; |
3226 | struct nfs_getaclargs args = { | |
3227 | .fh = NFS_FH(inode), | |
3228 | .acl_pages = pages, | |
3229 | .acl_len = buflen, | |
3230 | }; | |
663c79b3 BH |
3231 | struct nfs_getaclres res = { |
3232 | .acl_len = buflen, | |
3233 | }; | |
e50a1c2e | 3234 | void *resp_buf; |
aa1870af BF |
3235 | struct rpc_message msg = { |
3236 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3237 | .rpc_argp = &args, | |
663c79b3 | 3238 | .rpc_resp = &res, |
aa1870af | 3239 | }; |
e50a1c2e | 3240 | struct page *localpage = NULL; |
aa1870af BF |
3241 | int ret; |
3242 | ||
e50a1c2e BF |
3243 | if (buflen < PAGE_SIZE) { |
3244 | /* As long as we're doing a round trip to the server anyway, | |
3245 | * let's be prepared for a page of acl data. */ | |
3246 | localpage = alloc_page(GFP_KERNEL); | |
3247 | resp_buf = page_address(localpage); | |
3248 | if (localpage == NULL) | |
3249 | return -ENOMEM; | |
3250 | args.acl_pages[0] = localpage; | |
3251 | args.acl_pgbase = 0; | |
663c79b3 | 3252 | args.acl_len = PAGE_SIZE; |
e50a1c2e BF |
3253 | } else { |
3254 | resp_buf = buf; | |
3255 | buf_to_pages(buf, buflen, args.acl_pages, &args.acl_pgbase); | |
3256 | } | |
cccef3b9 | 3257 | ret = nfs4_call_sync(NFS_SERVER(inode), &msg, &args, &res, 0); |
e50a1c2e BF |
3258 | if (ret) |
3259 | goto out_free; | |
663c79b3 BH |
3260 | if (res.acl_len > args.acl_len) |
3261 | nfs4_write_cached_acl(inode, NULL, res.acl_len); | |
e50a1c2e | 3262 | else |
663c79b3 | 3263 | nfs4_write_cached_acl(inode, resp_buf, res.acl_len); |
e50a1c2e BF |
3264 | if (buf) { |
3265 | ret = -ERANGE; | |
663c79b3 | 3266 | if (res.acl_len > buflen) |
e50a1c2e BF |
3267 | goto out_free; |
3268 | if (localpage) | |
663c79b3 | 3269 | memcpy(buf, resp_buf, res.acl_len); |
e50a1c2e | 3270 | } |
663c79b3 | 3271 | ret = res.acl_len; |
e50a1c2e BF |
3272 | out_free: |
3273 | if (localpage) | |
3274 | __free_page(localpage); | |
aa1870af BF |
3275 | return ret; |
3276 | } | |
3277 | ||
16b4289c TM |
3278 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3279 | { | |
3280 | struct nfs4_exception exception = { }; | |
3281 | ssize_t ret; | |
3282 | do { | |
3283 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3284 | if (ret >= 0) | |
3285 | break; | |
3286 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3287 | } while (exception.retry); | |
3288 | return ret; | |
3289 | } | |
3290 | ||
e50a1c2e BF |
3291 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3292 | { | |
3293 | struct nfs_server *server = NFS_SERVER(inode); | |
3294 | int ret; | |
3295 | ||
3296 | if (!nfs4_server_supports_acls(server)) | |
3297 | return -EOPNOTSUPP; | |
3298 | ret = nfs_revalidate_inode(server, inode); | |
3299 | if (ret < 0) | |
3300 | return ret; | |
3301 | ret = nfs4_read_cached_acl(inode, buf, buflen); | |
3302 | if (ret != -ENOENT) | |
3303 | return ret; | |
3304 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3305 | } | |
3306 | ||
16b4289c | 3307 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3308 | { |
3309 | struct nfs_server *server = NFS_SERVER(inode); | |
3310 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3311 | struct nfs_setaclargs arg = { | |
3312 | .fh = NFS_FH(inode), | |
3313 | .acl_pages = pages, | |
3314 | .acl_len = buflen, | |
3315 | }; | |
73c403a9 | 3316 | struct nfs_setaclres res; |
4b580ee3 BF |
3317 | struct rpc_message msg = { |
3318 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3319 | .rpc_argp = &arg, | |
73c403a9 | 3320 | .rpc_resp = &res, |
4b580ee3 BF |
3321 | }; |
3322 | int ret; | |
3323 | ||
3324 | if (!nfs4_server_supports_acls(server)) | |
3325 | return -EOPNOTSUPP; | |
642ac549 | 3326 | nfs_inode_return_delegation(inode); |
4b580ee3 | 3327 | buf_to_pages(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
cccef3b9 | 3328 | ret = nfs4_call_sync(server, &msg, &arg, &res, 1); |
f41f7418 TM |
3329 | nfs_access_zap_cache(inode); |
3330 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3331 | return ret; |
3332 | } | |
3333 | ||
16b4289c TM |
3334 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3335 | { | |
3336 | struct nfs4_exception exception = { }; | |
3337 | int err; | |
3338 | do { | |
3339 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3340 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3341 | &exception); | |
3342 | } while (exception.retry); | |
3343 | return err; | |
3344 | } | |
3345 | ||
1da177e4 | 3346 | static int |
8328d59f | 3347 | _nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs_client *clp, struct nfs4_state *state) |
1da177e4 | 3348 | { |
1da177e4 LT |
3349 | if (!clp || task->tk_status >= 0) |
3350 | return 0; | |
3351 | switch(task->tk_status) { | |
9e33bed5 TM |
3352 | case -NFS4ERR_ADMIN_REVOKED: |
3353 | case -NFS4ERR_BAD_STATEID: | |
3354 | case -NFS4ERR_OPENMODE: | |
3355 | if (state == NULL) | |
3356 | break; | |
3357 | nfs4_state_mark_reclaim_nograce(clp, state); | |
1da177e4 LT |
3358 | case -NFS4ERR_STALE_CLIENTID: |
3359 | case -NFS4ERR_STALE_STATEID: | |
3360 | case -NFS4ERR_EXPIRED: | |
5d00837b | 3361 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
1da177e4 | 3362 | nfs4_schedule_state_recovery(clp); |
e005e804 | 3363 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
fda13939 | 3364 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); |
1da177e4 LT |
3365 | task->tk_status = 0; |
3366 | return -EAGAIN; | |
4745e315 AA |
3367 | #if defined(CONFIG_NFS_V4_1) |
3368 | case -NFS4ERR_BADSESSION: | |
3369 | case -NFS4ERR_BADSLOT: | |
3370 | case -NFS4ERR_BAD_HIGH_SLOT: | |
3371 | case -NFS4ERR_DEADSESSION: | |
3372 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
3373 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
3374 | case -NFS4ERR_SEQ_MISORDERED: | |
3375 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
3376 | task->tk_status); | |
0b9e2d41 | 3377 | nfs4_schedule_state_recovery(clp); |
4745e315 AA |
3378 | task->tk_status = 0; |
3379 | return -EAGAIN; | |
3380 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 3381 | case -NFS4ERR_DELAY: |
8328d59f AA |
3382 | if (server) |
3383 | nfs_inc_server_stats(server, NFSIOS_DELAY); | |
006ea73e | 3384 | case -NFS4ERR_GRACE: |
1da177e4 LT |
3385 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
3386 | task->tk_status = 0; | |
3387 | return -EAGAIN; | |
3388 | case -NFS4ERR_OLD_STATEID: | |
3389 | task->tk_status = 0; | |
3390 | return -EAGAIN; | |
3391 | } | |
3392 | task->tk_status = nfs4_map_errors(task->tk_status); | |
3393 | return 0; | |
3394 | } | |
3395 | ||
8328d59f AA |
3396 | static int |
3397 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) | |
3398 | { | |
3399 | return _nfs4_async_handle_error(task, server, server->nfs_client, state); | |
3400 | } | |
3401 | ||
adfa6f98 | 3402 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, unsigned short port, struct rpc_cred *cred) |
1da177e4 LT |
3403 | { |
3404 | nfs4_verifier sc_verifier; | |
3405 | struct nfs4_setclientid setclientid = { | |
3406 | .sc_verifier = &sc_verifier, | |
3407 | .sc_prog = program, | |
3408 | }; | |
3409 | struct rpc_message msg = { | |
3410 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
3411 | .rpc_argp = &setclientid, | |
3412 | .rpc_resp = clp, | |
286d7d6a | 3413 | .rpc_cred = cred, |
1da177e4 | 3414 | }; |
bc4785cd | 3415 | __be32 *p; |
1da177e4 LT |
3416 | int loop = 0; |
3417 | int status; | |
3418 | ||
bc4785cd | 3419 | p = (__be32*)sc_verifier.data; |
1da177e4 LT |
3420 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); |
3421 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
3422 | ||
3423 | for(;;) { | |
3424 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, | |
69dd716c | 3425 | sizeof(setclientid.sc_name), "%s/%s %s %s %u", |
d4d3c507 CL |
3426 | clp->cl_ipaddr, |
3427 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3428 | RPC_DISPLAY_ADDR), | |
69dd716c TM |
3429 | rpc_peeraddr2str(clp->cl_rpcclient, |
3430 | RPC_DISPLAY_PROTO), | |
78ea323b | 3431 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
1da177e4 LT |
3432 | clp->cl_id_uniquifier); |
3433 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
d4d3c507 CL |
3434 | sizeof(setclientid.sc_netid), |
3435 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3436 | RPC_DISPLAY_NETID)); | |
1da177e4 | 3437 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 3438 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
3439 | clp->cl_ipaddr, port >> 8, port & 255); |
3440 | ||
3441 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3442 | if (status != -NFS4ERR_CLID_INUSE) | |
3443 | break; | |
3444 | if (signalled()) | |
3445 | break; | |
3446 | if (loop++ & 1) | |
3447 | ssleep(clp->cl_lease_time + 1); | |
3448 | else | |
3449 | if (++clp->cl_id_uniquifier == 0) | |
3450 | break; | |
3451 | } | |
3452 | return status; | |
3453 | } | |
3454 | ||
adfa6f98 | 3455 | static int _nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3456 | { |
3457 | struct nfs_fsinfo fsinfo; | |
3458 | struct rpc_message msg = { | |
3459 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
3460 | .rpc_argp = clp, | |
3461 | .rpc_resp = &fsinfo, | |
286d7d6a | 3462 | .rpc_cred = cred, |
1da177e4 LT |
3463 | }; |
3464 | unsigned long now; | |
3465 | int status; | |
3466 | ||
3467 | now = jiffies; | |
3468 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3469 | if (status == 0) { | |
3470 | spin_lock(&clp->cl_lock); | |
3471 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
3472 | clp->cl_last_renewal = now; | |
3473 | spin_unlock(&clp->cl_lock); | |
3474 | } | |
3475 | return status; | |
3476 | } | |
3477 | ||
adfa6f98 | 3478 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct rpc_cred *cred) |
51581f3b | 3479 | { |
77e03677 | 3480 | long timeout = 0; |
51581f3b TM |
3481 | int err; |
3482 | do { | |
3483 | err = _nfs4_proc_setclientid_confirm(clp, cred); | |
3484 | switch (err) { | |
3485 | case 0: | |
3486 | return err; | |
3487 | case -NFS4ERR_RESOURCE: | |
3488 | /* The IBM lawyers misread another document! */ | |
3489 | case -NFS4ERR_DELAY: | |
3490 | err = nfs4_delay(clp->cl_rpcclient, &timeout); | |
3491 | } | |
3492 | } while (err == 0); | |
3493 | return err; | |
3494 | } | |
3495 | ||
fe650407 TM |
3496 | struct nfs4_delegreturndata { |
3497 | struct nfs4_delegreturnargs args; | |
fa178f29 | 3498 | struct nfs4_delegreturnres res; |
fe650407 TM |
3499 | struct nfs_fh fh; |
3500 | nfs4_stateid stateid; | |
26e976a8 | 3501 | unsigned long timestamp; |
fa178f29 | 3502 | struct nfs_fattr fattr; |
fe650407 TM |
3503 | int rpc_status; |
3504 | }; | |
3505 | ||
fe650407 TM |
3506 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
3507 | { | |
3508 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 AA |
3509 | |
3510 | nfs4_sequence_done_free_slot(data->res.server, &data->res.seq_res, | |
3511 | task->tk_status); | |
3512 | ||
fe650407 | 3513 | data->rpc_status = task->tk_status; |
26e976a8 | 3514 | if (data->rpc_status == 0) |
fa178f29 | 3515 | renew_lease(data->res.server, data->timestamp); |
fe650407 TM |
3516 | } |
3517 | ||
3518 | static void nfs4_delegreturn_release(void *calldata) | |
3519 | { | |
fe650407 TM |
3520 | kfree(calldata); |
3521 | } | |
3522 | ||
938e1010 AA |
3523 | #if defined(CONFIG_NFS_V4_1) |
3524 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
3525 | { | |
3526 | struct nfs4_delegreturndata *d_data; | |
3527 | ||
3528 | d_data = (struct nfs4_delegreturndata *)data; | |
3529 | ||
3530 | if (nfs4_setup_sequence(d_data->res.server->nfs_client, | |
3531 | &d_data->args.seq_args, | |
3532 | &d_data->res.seq_res, 1, task)) | |
3533 | return; | |
3534 | rpc_call_start(task); | |
3535 | } | |
3536 | #endif /* CONFIG_NFS_V4_1 */ | |
3537 | ||
c8d149f3 | 3538 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
3539 | #if defined(CONFIG_NFS_V4_1) |
3540 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
3541 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
3542 | .rpc_call_done = nfs4_delegreturn_done, |
3543 | .rpc_release = nfs4_delegreturn_release, | |
3544 | }; | |
3545 | ||
e6f81075 | 3546 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
3547 | { |
3548 | struct nfs4_delegreturndata *data; | |
fa178f29 | 3549 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 3550 | struct rpc_task *task; |
5138fde0 TM |
3551 | struct rpc_message msg = { |
3552 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
3553 | .rpc_cred = cred, | |
3554 | }; | |
c970aa85 TM |
3555 | struct rpc_task_setup task_setup_data = { |
3556 | .rpc_client = server->client, | |
5138fde0 | 3557 | .rpc_message = &msg, |
c970aa85 TM |
3558 | .callback_ops = &nfs4_delegreturn_ops, |
3559 | .flags = RPC_TASK_ASYNC, | |
3560 | }; | |
e6f81075 | 3561 | int status = 0; |
fe650407 | 3562 | |
938e1010 | 3563 | data = kzalloc(sizeof(*data), GFP_KERNEL); |
fe650407 TM |
3564 | if (data == NULL) |
3565 | return -ENOMEM; | |
3566 | data->args.fhandle = &data->fh; | |
3567 | data->args.stateid = &data->stateid; | |
fa178f29 | 3568 | data->args.bitmask = server->attr_bitmask; |
fe650407 TM |
3569 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
3570 | memcpy(&data->stateid, stateid, sizeof(data->stateid)); | |
fa178f29 TM |
3571 | data->res.fattr = &data->fattr; |
3572 | data->res.server = server; | |
5f7dbd5c | 3573 | data->res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE; |
5138fde0 | 3574 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 3575 | data->timestamp = jiffies; |
fe650407 TM |
3576 | data->rpc_status = 0; |
3577 | ||
c970aa85 | 3578 | task_setup_data.callback_data = data; |
5138fde0 TM |
3579 | msg.rpc_argp = &data->args, |
3580 | msg.rpc_resp = &data->res, | |
c970aa85 | 3581 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 3582 | if (IS_ERR(task)) |
fe650407 | 3583 | return PTR_ERR(task); |
e6f81075 TM |
3584 | if (!issync) |
3585 | goto out; | |
fe650407 | 3586 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
3587 | if (status != 0) |
3588 | goto out; | |
3589 | status = data->rpc_status; | |
3590 | if (status != 0) | |
3591 | goto out; | |
3592 | nfs_refresh_inode(inode, &data->fattr); | |
3593 | out: | |
e6b3c4db | 3594 | rpc_put_task(task); |
fe650407 | 3595 | return status; |
1da177e4 LT |
3596 | } |
3597 | ||
e6f81075 | 3598 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
3599 | { |
3600 | struct nfs_server *server = NFS_SERVER(inode); | |
3601 | struct nfs4_exception exception = { }; | |
3602 | int err; | |
3603 | do { | |
e6f81075 | 3604 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
3605 | switch (err) { |
3606 | case -NFS4ERR_STALE_STATEID: | |
3607 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
3608 | case 0: |
3609 | return 0; | |
3610 | } | |
3611 | err = nfs4_handle_exception(server, err, &exception); | |
3612 | } while (exception.retry); | |
3613 | return err; | |
3614 | } | |
3615 | ||
3616 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
3617 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
3618 | ||
3619 | /* | |
3620 | * sleep, with exponential backoff, and retry the LOCK operation. | |
3621 | */ | |
3622 | static unsigned long | |
3623 | nfs4_set_lock_task_retry(unsigned long timeout) | |
3624 | { | |
150030b7 | 3625 | schedule_timeout_killable(timeout); |
1da177e4 LT |
3626 | timeout <<= 1; |
3627 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
3628 | return NFS4_LOCK_MAXTIMEOUT; | |
3629 | return timeout; | |
3630 | } | |
3631 | ||
1da177e4 LT |
3632 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
3633 | { | |
3634 | struct inode *inode = state->inode; | |
3635 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 3636 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 3637 | struct nfs_lockt_args arg = { |
1da177e4 | 3638 | .fh = NFS_FH(inode), |
911d1aaf | 3639 | .fl = request, |
1da177e4 | 3640 | }; |
911d1aaf TM |
3641 | struct nfs_lockt_res res = { |
3642 | .denied = request, | |
1da177e4 LT |
3643 | }; |
3644 | struct rpc_message msg = { | |
3645 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
3646 | .rpc_argp = &arg, | |
3647 | .rpc_resp = &res, | |
3648 | .rpc_cred = state->owner->so_cred, | |
3649 | }; | |
1da177e4 LT |
3650 | struct nfs4_lock_state *lsp; |
3651 | int status; | |
3652 | ||
911d1aaf | 3653 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
3654 | status = nfs4_set_lock_state(state, request); |
3655 | if (status != 0) | |
3656 | goto out; | |
3657 | lsp = request->fl_u.nfs4_fl.owner; | |
9f958ab8 | 3658 | arg.lock_owner.id = lsp->ls_id.id; |
cccef3b9 | 3659 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
911d1aaf TM |
3660 | switch (status) { |
3661 | case 0: | |
3662 | request->fl_type = F_UNLCK; | |
3663 | break; | |
3664 | case -NFS4ERR_DENIED: | |
3665 | status = 0; | |
1da177e4 | 3666 | } |
70cc6487 | 3667 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 3668 | out: |
1da177e4 LT |
3669 | return status; |
3670 | } | |
3671 | ||
3672 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3673 | { | |
3674 | struct nfs4_exception exception = { }; | |
3675 | int err; | |
3676 | ||
3677 | do { | |
3678 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
3679 | _nfs4_proc_getlk(state, cmd, request), | |
3680 | &exception); | |
3681 | } while (exception.retry); | |
3682 | return err; | |
3683 | } | |
3684 | ||
3685 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
3686 | { | |
3687 | int res = 0; | |
3688 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
3689 | case FL_POSIX: | |
3690 | res = posix_lock_file_wait(file, fl); | |
3691 | break; | |
3692 | case FL_FLOCK: | |
3693 | res = flock_lock_file_wait(file, fl); | |
3694 | break; | |
3695 | default: | |
3696 | BUG(); | |
3697 | } | |
1da177e4 LT |
3698 | return res; |
3699 | } | |
3700 | ||
faf5f49c | 3701 | struct nfs4_unlockdata { |
911d1aaf TM |
3702 | struct nfs_locku_args arg; |
3703 | struct nfs_locku_res res; | |
faf5f49c TM |
3704 | struct nfs4_lock_state *lsp; |
3705 | struct nfs_open_context *ctx; | |
911d1aaf TM |
3706 | struct file_lock fl; |
3707 | const struct nfs_server *server; | |
26e976a8 | 3708 | unsigned long timestamp; |
faf5f49c TM |
3709 | }; |
3710 | ||
911d1aaf TM |
3711 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
3712 | struct nfs_open_context *ctx, | |
3713 | struct nfs4_lock_state *lsp, | |
3714 | struct nfs_seqid *seqid) | |
3715 | { | |
3716 | struct nfs4_unlockdata *p; | |
3717 | struct inode *inode = lsp->ls_state->inode; | |
3718 | ||
a893693c | 3719 | p = kzalloc(sizeof(*p), GFP_KERNEL); |
911d1aaf TM |
3720 | if (p == NULL) |
3721 | return NULL; | |
3722 | p->arg.fh = NFS_FH(inode); | |
3723 | p->arg.fl = &p->fl; | |
3724 | p->arg.seqid = seqid; | |
c1d51931 | 3725 | p->res.seqid = seqid; |
5f7dbd5c | 3726 | p->res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE; |
911d1aaf TM |
3727 | p->arg.stateid = &lsp->ls_stateid; |
3728 | p->lsp = lsp; | |
3729 | atomic_inc(&lsp->ls_count); | |
3730 | /* Ensure we don't close file until we're done freeing locks! */ | |
3731 | p->ctx = get_nfs_open_context(ctx); | |
3732 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
3733 | p->server = NFS_SERVER(inode); | |
3734 | return p; | |
3735 | } | |
3736 | ||
06f814a3 | 3737 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 3738 | { |
963d8fe5 | 3739 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 3740 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
3741 | nfs4_put_lock_state(calldata->lsp); |
3742 | put_nfs_open_context(calldata->ctx); | |
3743 | kfree(calldata); | |
faf5f49c TM |
3744 | } |
3745 | ||
963d8fe5 | 3746 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 3747 | { |
963d8fe5 | 3748 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 3749 | |
a893693c AA |
3750 | nfs4_sequence_done(calldata->server, &calldata->res.seq_res, |
3751 | task->tk_status); | |
06f814a3 TM |
3752 | if (RPC_ASSASSINATED(task)) |
3753 | return; | |
faf5f49c TM |
3754 | switch (task->tk_status) { |
3755 | case 0: | |
3756 | memcpy(calldata->lsp->ls_stateid.data, | |
911d1aaf | 3757 | calldata->res.stateid.data, |
faf5f49c | 3758 | sizeof(calldata->lsp->ls_stateid.data)); |
26e976a8 | 3759 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 3760 | break; |
9e33bed5 TM |
3761 | case -NFS4ERR_BAD_STATEID: |
3762 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
3763 | case -NFS4ERR_STALE_STATEID: |
3764 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
3765 | break; |
3766 | default: | |
9e33bed5 | 3767 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
eedc020e | 3768 | nfs4_restart_rpc(task, |
e608e79f AA |
3769 | calldata->server->nfs_client, |
3770 | &calldata->res.seq_res); | |
faf5f49c | 3771 | } |
a893693c AA |
3772 | nfs4_sequence_free_slot(calldata->server->nfs_client, |
3773 | &calldata->res.seq_res); | |
faf5f49c TM |
3774 | } |
3775 | ||
4ce70ada | 3776 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 3777 | { |
4ce70ada | 3778 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 3779 | |
911d1aaf | 3780 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
3781 | return; |
3782 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
3783 | /* Note: exit _without_ running nfs4_locku_done */ |
3784 | task->tk_action = NULL; | |
faf5f49c TM |
3785 | return; |
3786 | } | |
26e976a8 | 3787 | calldata->timestamp = jiffies; |
a893693c AA |
3788 | if (nfs4_setup_sequence(calldata->server->nfs_client, |
3789 | &calldata->arg.seq_args, | |
3790 | &calldata->res.seq_res, 1, task)) | |
3791 | return; | |
5138fde0 | 3792 | rpc_call_start(task); |
faf5f49c TM |
3793 | } |
3794 | ||
963d8fe5 | 3795 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 3796 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 3797 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 3798 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
3799 | }; |
3800 | ||
a5d16a4d TM |
3801 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
3802 | struct nfs_open_context *ctx, | |
3803 | struct nfs4_lock_state *lsp, | |
3804 | struct nfs_seqid *seqid) | |
3805 | { | |
3806 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
3807 | struct rpc_message msg = { |
3808 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
3809 | .rpc_cred = ctx->cred, | |
3810 | }; | |
c970aa85 TM |
3811 | struct rpc_task_setup task_setup_data = { |
3812 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 3813 | .rpc_message = &msg, |
c970aa85 | 3814 | .callback_ops = &nfs4_locku_ops, |
101070ca | 3815 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
3816 | .flags = RPC_TASK_ASYNC, |
3817 | }; | |
a5d16a4d | 3818 | |
137d6aca FF |
3819 | /* Ensure this is an unlock - when canceling a lock, the |
3820 | * canceled lock is passed in, and it won't be an unlock. | |
3821 | */ | |
3822 | fl->fl_type = F_UNLCK; | |
3823 | ||
a5d16a4d TM |
3824 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
3825 | if (data == NULL) { | |
3826 | nfs_free_seqid(seqid); | |
3827 | return ERR_PTR(-ENOMEM); | |
3828 | } | |
3829 | ||
5138fde0 TM |
3830 | msg.rpc_argp = &data->arg, |
3831 | msg.rpc_resp = &data->res, | |
c970aa85 TM |
3832 | task_setup_data.callback_data = data; |
3833 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
3834 | } |
3835 | ||
faf5f49c TM |
3836 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
3837 | { | |
19e03c57 | 3838 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 3839 | struct nfs_seqid *seqid; |
1da177e4 | 3840 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
3841 | struct rpc_task *task; |
3842 | int status = 0; | |
536ff0f8 | 3843 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 3844 | |
8d0a8a9d | 3845 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
3846 | /* Unlock _before_ we do the RPC call */ |
3847 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
3848 | down_read(&nfsi->rwsem); |
3849 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
3850 | up_read(&nfsi->rwsem); | |
9b073574 | 3851 | goto out; |
19e03c57 TM |
3852 | } |
3853 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 3854 | if (status != 0) |
9b073574 TM |
3855 | goto out; |
3856 | /* Is this a delegated lock? */ | |
3857 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
3858 | goto out; | |
8d0a8a9d | 3859 | lsp = request->fl_u.nfs4_fl.owner; |
911d1aaf | 3860 | seqid = nfs_alloc_seqid(&lsp->ls_seqid); |
9b073574 | 3861 | status = -ENOMEM; |
911d1aaf | 3862 | if (seqid == NULL) |
9b073574 | 3863 | goto out; |
cd3758e3 | 3864 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
3865 | status = PTR_ERR(task); |
3866 | if (IS_ERR(task)) | |
9b073574 | 3867 | goto out; |
a5d16a4d | 3868 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 3869 | rpc_put_task(task); |
9b073574 | 3870 | out: |
536ff0f8 | 3871 | request->fl_flags = fl_flags; |
1da177e4 LT |
3872 | return status; |
3873 | } | |
3874 | ||
a5d16a4d TM |
3875 | struct nfs4_lockdata { |
3876 | struct nfs_lock_args arg; | |
3877 | struct nfs_lock_res res; | |
3878 | struct nfs4_lock_state *lsp; | |
3879 | struct nfs_open_context *ctx; | |
3880 | struct file_lock fl; | |
26e976a8 | 3881 | unsigned long timestamp; |
a5d16a4d TM |
3882 | int rpc_status; |
3883 | int cancelled; | |
66179efe | 3884 | struct nfs_server *server; |
a5d16a4d TM |
3885 | }; |
3886 | ||
3887 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
3888 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp) | |
1da177e4 | 3889 | { |
a5d16a4d TM |
3890 | struct nfs4_lockdata *p; |
3891 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 3892 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d TM |
3893 | |
3894 | p = kzalloc(sizeof(*p), GFP_KERNEL); | |
3895 | if (p == NULL) | |
3896 | return NULL; | |
3897 | ||
3898 | p->arg.fh = NFS_FH(inode); | |
3899 | p->arg.fl = &p->fl; | |
2f74c0a0 TM |
3900 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid); |
3901 | if (p->arg.open_seqid == NULL) | |
3902 | goto out_free; | |
a5d16a4d TM |
3903 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid); |
3904 | if (p->arg.lock_seqid == NULL) | |
2f74c0a0 | 3905 | goto out_free_seqid; |
a5d16a4d | 3906 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 3907 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 3908 | p->arg.lock_owner.id = lsp->ls_id.id; |
c1d51931 | 3909 | p->res.lock_seqid = p->arg.lock_seqid; |
5f7dbd5c | 3910 | p->res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE; |
a5d16a4d | 3911 | p->lsp = lsp; |
66179efe | 3912 | p->server = server; |
a5d16a4d TM |
3913 | atomic_inc(&lsp->ls_count); |
3914 | p->ctx = get_nfs_open_context(ctx); | |
3915 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
3916 | return p; | |
2f74c0a0 TM |
3917 | out_free_seqid: |
3918 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
3919 | out_free: |
3920 | kfree(p); | |
3921 | return NULL; | |
3922 | } | |
3923 | ||
3924 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
3925 | { | |
3926 | struct nfs4_lockdata *data = calldata; | |
3927 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 3928 | |
3110ff80 | 3929 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
3930 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
3931 | return; | |
a5d16a4d TM |
3932 | /* Do we need to do an open_to_lock_owner? */ |
3933 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
3934 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
3935 | return; | |
a5d16a4d TM |
3936 | data->arg.open_stateid = &state->stateid; |
3937 | data->arg.new_lock_owner = 1; | |
c1d51931 | 3938 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
3939 | } else |
3940 | data->arg.new_lock_owner = 0; | |
26e976a8 | 3941 | data->timestamp = jiffies; |
66179efe AA |
3942 | if (nfs4_setup_sequence(data->server->nfs_client, &data->arg.seq_args, |
3943 | &data->res.seq_res, 1, task)) | |
3944 | return; | |
5138fde0 | 3945 | rpc_call_start(task); |
3110ff80 | 3946 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
a5d16a4d TM |
3947 | } |
3948 | ||
3949 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) | |
3950 | { | |
3951 | struct nfs4_lockdata *data = calldata; | |
3952 | ||
3110ff80 | 3953 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 3954 | |
66179efe AA |
3955 | nfs4_sequence_done_free_slot(data->server, &data->res.seq_res, |
3956 | task->tk_status); | |
3957 | ||
a5d16a4d TM |
3958 | data->rpc_status = task->tk_status; |
3959 | if (RPC_ASSASSINATED(task)) | |
3960 | goto out; | |
3961 | if (data->arg.new_lock_owner != 0) { | |
a5d16a4d TM |
3962 | if (data->rpc_status == 0) |
3963 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
3964 | else | |
3965 | goto out; | |
3966 | } | |
3967 | if (data->rpc_status == 0) { | |
3968 | memcpy(data->lsp->ls_stateid.data, data->res.stateid.data, | |
3969 | sizeof(data->lsp->ls_stateid.data)); | |
3970 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; | |
88be9f99 | 3971 | renew_lease(NFS_SERVER(data->ctx->path.dentry->d_inode), data->timestamp); |
a5d16a4d | 3972 | } |
a5d16a4d | 3973 | out: |
3110ff80 | 3974 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
3975 | } |
3976 | ||
3977 | static void nfs4_lock_release(void *calldata) | |
3978 | { | |
3979 | struct nfs4_lockdata *data = calldata; | |
3980 | ||
3110ff80 | 3981 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 3982 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
3983 | if (data->cancelled != 0) { |
3984 | struct rpc_task *task; | |
3985 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
3986 | data->arg.lock_seqid); | |
3987 | if (!IS_ERR(task)) | |
e6b3c4db | 3988 | rpc_put_task(task); |
3110ff80 | 3989 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
3990 | } else |
3991 | nfs_free_seqid(data->arg.lock_seqid); | |
3992 | nfs4_put_lock_state(data->lsp); | |
3993 | put_nfs_open_context(data->ctx); | |
3994 | kfree(data); | |
3110ff80 | 3995 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
3996 | } |
3997 | ||
3998 | static const struct rpc_call_ops nfs4_lock_ops = { | |
3999 | .rpc_call_prepare = nfs4_lock_prepare, | |
4000 | .rpc_call_done = nfs4_lock_done, | |
4001 | .rpc_release = nfs4_lock_release, | |
4002 | }; | |
4003 | ||
4004 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int reclaim) | |
4005 | { | |
4006 | struct nfs4_lockdata *data; | |
4007 | struct rpc_task *task; | |
5138fde0 TM |
4008 | struct rpc_message msg = { |
4009 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4010 | .rpc_cred = state->owner->so_cred, | |
4011 | }; | |
c970aa85 TM |
4012 | struct rpc_task_setup task_setup_data = { |
4013 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4014 | .rpc_message = &msg, |
c970aa85 | 4015 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4016 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4017 | .flags = RPC_TASK_ASYNC, |
4018 | }; | |
a5d16a4d TM |
4019 | int ret; |
4020 | ||
3110ff80 | 4021 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4022 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
a5d16a4d TM |
4023 | fl->fl_u.nfs4_fl.owner); |
4024 | if (data == NULL) | |
4025 | return -ENOMEM; | |
4026 | if (IS_SETLKW(cmd)) | |
4027 | data->arg.block = 1; | |
4028 | if (reclaim != 0) | |
4029 | data->arg.reclaim = 1; | |
5138fde0 TM |
4030 | msg.rpc_argp = &data->arg, |
4031 | msg.rpc_resp = &data->res, | |
c970aa85 TM |
4032 | task_setup_data.callback_data = data; |
4033 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 4034 | if (IS_ERR(task)) |
a5d16a4d | 4035 | return PTR_ERR(task); |
a5d16a4d TM |
4036 | ret = nfs4_wait_for_completion_rpc_task(task); |
4037 | if (ret == 0) { | |
4038 | ret = data->rpc_status; | |
a5d16a4d TM |
4039 | } else |
4040 | data->cancelled = 1; | |
e6b3c4db | 4041 | rpc_put_task(task); |
3110ff80 | 4042 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4043 | return ret; |
1da177e4 LT |
4044 | } |
4045 | ||
4046 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4047 | { | |
202b50dc TM |
4048 | struct nfs_server *server = NFS_SERVER(state->inode); |
4049 | struct nfs4_exception exception = { }; | |
4050 | int err; | |
4051 | ||
4052 | do { | |
42a2d13e TM |
4053 | /* Cache the lock if possible... */ |
4054 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4055 | return 0; | |
202b50dc TM |
4056 | err = _nfs4_do_setlk(state, F_SETLK, request, 1); |
4057 | if (err != -NFS4ERR_DELAY) | |
4058 | break; | |
4059 | nfs4_handle_exception(server, err, &exception); | |
4060 | } while (exception.retry); | |
4061 | return err; | |
1da177e4 LT |
4062 | } |
4063 | ||
4064 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4065 | { | |
202b50dc TM |
4066 | struct nfs_server *server = NFS_SERVER(state->inode); |
4067 | struct nfs4_exception exception = { }; | |
4068 | int err; | |
4069 | ||
6bfc93ef TM |
4070 | err = nfs4_set_lock_state(state, request); |
4071 | if (err != 0) | |
4072 | return err; | |
202b50dc | 4073 | do { |
42a2d13e TM |
4074 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4075 | return 0; | |
202b50dc | 4076 | err = _nfs4_do_setlk(state, F_SETLK, request, 0); |
a9ed2e25 TM |
4077 | switch (err) { |
4078 | default: | |
4079 | goto out; | |
4080 | case -NFS4ERR_GRACE: | |
4081 | case -NFS4ERR_DELAY: | |
4082 | nfs4_handle_exception(server, err, &exception); | |
4083 | err = 0; | |
4084 | } | |
202b50dc | 4085 | } while (exception.retry); |
a9ed2e25 | 4086 | out: |
202b50dc | 4087 | return err; |
1da177e4 LT |
4088 | } |
4089 | ||
4090 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4091 | { | |
19e03c57 | 4092 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4093 | unsigned char fl_flags = request->fl_flags; |
1da177e4 LT |
4094 | int status; |
4095 | ||
6bfc93ef | 4096 | /* Is this a delegated open? */ |
6bfc93ef TM |
4097 | status = nfs4_set_lock_state(state, request); |
4098 | if (status != 0) | |
4099 | goto out; | |
01c3b861 TM |
4100 | request->fl_flags |= FL_ACCESS; |
4101 | status = do_vfs_lock(request->fl_file, request); | |
4102 | if (status < 0) | |
4103 | goto out; | |
19e03c57 | 4104 | down_read(&nfsi->rwsem); |
01c3b861 | 4105 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4106 | /* Yes: cache locks! */ |
01c3b861 | 4107 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4108 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4109 | status = do_vfs_lock(request->fl_file, request); | |
4110 | goto out_unlock; | |
01c3b861 | 4111 | } |
6bfc93ef TM |
4112 | status = _nfs4_do_setlk(state, cmd, request, 0); |
4113 | if (status != 0) | |
01c3b861 | 4114 | goto out_unlock; |
6bfc93ef | 4115 | /* Note: we always want to sleep here! */ |
01c3b861 | 4116 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4117 | if (do_vfs_lock(request->fl_file, request) < 0) |
3110ff80 | 4118 | printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __func__); |
01c3b861 | 4119 | out_unlock: |
19e03c57 | 4120 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4121 | out: |
4122 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4123 | return status; |
4124 | } | |
4125 | ||
4126 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4127 | { | |
4128 | struct nfs4_exception exception = { }; | |
4129 | int err; | |
4130 | ||
4131 | do { | |
965b5d67 TM |
4132 | err = _nfs4_proc_setlk(state, cmd, request); |
4133 | if (err == -NFS4ERR_DENIED) | |
4134 | err = -EAGAIN; | |
1da177e4 | 4135 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4136 | err, &exception); |
1da177e4 LT |
4137 | } while (exception.retry); |
4138 | return err; | |
4139 | } | |
4140 | ||
4141 | static int | |
4142 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
4143 | { | |
4144 | struct nfs_open_context *ctx; | |
4145 | struct nfs4_state *state; | |
4146 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
4147 | int status; | |
4148 | ||
4149 | /* verify open state */ | |
cd3758e3 | 4150 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
4151 | state = ctx->state; |
4152 | ||
4153 | if (request->fl_start < 0 || request->fl_end < 0) | |
4154 | return -EINVAL; | |
4155 | ||
d953126a TM |
4156 | if (IS_GETLK(cmd)) { |
4157 | if (state != NULL) | |
4158 | return nfs4_proc_getlk(state, F_GETLK, request); | |
4159 | return 0; | |
4160 | } | |
1da177e4 LT |
4161 | |
4162 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
4163 | return -EINVAL; | |
4164 | ||
d953126a TM |
4165 | if (request->fl_type == F_UNLCK) { |
4166 | if (state != NULL) | |
4167 | return nfs4_proc_unlck(state, cmd, request); | |
4168 | return 0; | |
4169 | } | |
1da177e4 | 4170 | |
d953126a TM |
4171 | if (state == NULL) |
4172 | return -ENOLCK; | |
1da177e4 LT |
4173 | do { |
4174 | status = nfs4_proc_setlk(state, cmd, request); | |
4175 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
4176 | break; | |
4177 | timeout = nfs4_set_lock_task_retry(timeout); | |
4178 | status = -ERESTARTSYS; | |
4179 | if (signalled()) | |
4180 | break; | |
4181 | } while(status < 0); | |
1da177e4 LT |
4182 | return status; |
4183 | } | |
4184 | ||
888e694c TM |
4185 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
4186 | { | |
4187 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4188 | struct nfs4_exception exception = { }; | |
4189 | int err; | |
4190 | ||
4191 | err = nfs4_set_lock_state(state, fl); | |
4192 | if (err != 0) | |
4193 | goto out; | |
4194 | do { | |
4195 | err = _nfs4_do_setlk(state, F_SETLK, fl, 0); | |
d5122201 TM |
4196 | switch (err) { |
4197 | default: | |
4198 | printk(KERN_ERR "%s: unhandled error %d.\n", | |
4199 | __func__, err); | |
4200 | case 0: | |
965b5d67 | 4201 | case -ESTALE: |
d5122201 TM |
4202 | goto out; |
4203 | case -NFS4ERR_EXPIRED: | |
4204 | case -NFS4ERR_STALE_CLIENTID: | |
965b5d67 | 4205 | case -NFS4ERR_STALE_STATEID: |
d5122201 TM |
4206 | nfs4_schedule_state_recovery(server->nfs_client); |
4207 | goto out; | |
965b5d67 TM |
4208 | case -ERESTARTSYS: |
4209 | /* | |
4210 | * The show must go on: exit, but mark the | |
4211 | * stateid as needing recovery. | |
4212 | */ | |
4213 | case -NFS4ERR_ADMIN_REVOKED: | |
4214 | case -NFS4ERR_BAD_STATEID: | |
4215 | case -NFS4ERR_OPENMODE: | |
4216 | nfs4_state_mark_reclaim_nograce(server->nfs_client, state); | |
4217 | err = 0; | |
4218 | goto out; | |
4219 | case -ENOMEM: | |
4220 | case -NFS4ERR_DENIED: | |
4221 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
4222 | err = 0; | |
4223 | goto out; | |
d5122201 TM |
4224 | case -NFS4ERR_DELAY: |
4225 | break; | |
4226 | } | |
888e694c TM |
4227 | err = nfs4_handle_exception(server, err, &exception); |
4228 | } while (exception.retry); | |
4229 | out: | |
4230 | return err; | |
4231 | } | |
6b3b5496 | 4232 | |
aa1870af BF |
4233 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
4234 | ||
6b3b5496 BF |
4235 | int nfs4_setxattr(struct dentry *dentry, const char *key, const void *buf, |
4236 | size_t buflen, int flags) | |
4237 | { | |
4b580ee3 BF |
4238 | struct inode *inode = dentry->d_inode; |
4239 | ||
4240 | if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0) | |
4241 | return -EOPNOTSUPP; | |
4242 | ||
4b580ee3 | 4243 | return nfs4_proc_set_acl(inode, buf, buflen); |
6b3b5496 BF |
4244 | } |
4245 | ||
4246 | /* The getxattr man page suggests returning -ENODATA for unknown attributes, | |
4247 | * and that's what we'll do for e.g. user attributes that haven't been set. | |
4248 | * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported | |
4249 | * attributes in kernel-managed attribute namespaces. */ | |
4250 | ssize_t nfs4_getxattr(struct dentry *dentry, const char *key, void *buf, | |
4251 | size_t buflen) | |
4252 | { | |
aa1870af BF |
4253 | struct inode *inode = dentry->d_inode; |
4254 | ||
4255 | if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0) | |
4256 | return -EOPNOTSUPP; | |
4257 | ||
4258 | return nfs4_proc_get_acl(inode, buf, buflen); | |
6b3b5496 BF |
4259 | } |
4260 | ||
4261 | ssize_t nfs4_listxattr(struct dentry *dentry, char *buf, size_t buflen) | |
4262 | { | |
aa1870af | 4263 | size_t len = strlen(XATTR_NAME_NFSV4_ACL) + 1; |
6b3b5496 | 4264 | |
096455a2 BF |
4265 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
4266 | return 0; | |
6b3b5496 BF |
4267 | if (buf && buflen < len) |
4268 | return -ERANGE; | |
4269 | if (buf) | |
aa1870af BF |
4270 | memcpy(buf, XATTR_NAME_NFSV4_ACL, len); |
4271 | return len; | |
6b3b5496 BF |
4272 | } |
4273 | ||
69aaaae1 TM |
4274 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
4275 | { | |
4276 | if (!((fattr->valid & NFS_ATTR_FATTR_FILEID) && | |
4277 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
4278 | (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL))) | |
4279 | return; | |
4280 | ||
4281 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
4282 | NFS_ATTR_FATTR_NLINK; | |
4283 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; | |
4284 | fattr->nlink = 2; | |
4285 | } | |
4286 | ||
56659e99 | 4287 | int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, |
7aaa0b3b | 4288 | struct nfs4_fs_locations *fs_locations, struct page *page) |
683b57b4 TM |
4289 | { |
4290 | struct nfs_server *server = NFS_SERVER(dir); | |
4291 | u32 bitmask[2] = { | |
361e624f MN |
4292 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
4293 | [1] = FATTR4_WORD1_MOUNTED_ON_FILEID, | |
683b57b4 TM |
4294 | }; |
4295 | struct nfs4_fs_locations_arg args = { | |
4296 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 4297 | .name = name, |
683b57b4 TM |
4298 | .page = page, |
4299 | .bitmask = bitmask, | |
4300 | }; | |
22958463 BH |
4301 | struct nfs4_fs_locations_res res = { |
4302 | .fs_locations = fs_locations, | |
4303 | }; | |
683b57b4 TM |
4304 | struct rpc_message msg = { |
4305 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
4306 | .rpc_argp = &args, | |
22958463 | 4307 | .rpc_resp = &res, |
683b57b4 TM |
4308 | }; |
4309 | int status; | |
4310 | ||
3110ff80 | 4311 | dprintk("%s: start\n", __func__); |
c228fd3a | 4312 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 4313 | fs_locations->server = server; |
830b8e33 | 4314 | fs_locations->nlocations = 0; |
cccef3b9 | 4315 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
69aaaae1 | 4316 | nfs_fixup_referral_attributes(&fs_locations->fattr); |
3110ff80 | 4317 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
4318 | return status; |
4319 | } | |
4320 | ||
557134a3 | 4321 | #ifdef CONFIG_NFS_V4_1 |
99fe60d0 BH |
4322 | /* |
4323 | * nfs4_proc_exchange_id() | |
4324 | * | |
4325 | * Since the clientid has expired, all compounds using sessions | |
4326 | * associated with the stale clientid will be returning | |
4327 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
4328 | * be in some phase of session reset. | |
4329 | */ | |
4d643d1d | 4330 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
4331 | { |
4332 | nfs4_verifier verifier; | |
4333 | struct nfs41_exchange_id_args args = { | |
4334 | .client = clp, | |
4335 | .flags = clp->cl_exchange_flags, | |
4336 | }; | |
4337 | struct nfs41_exchange_id_res res = { | |
4338 | .client = clp, | |
4339 | }; | |
4340 | int status; | |
4341 | struct rpc_message msg = { | |
4342 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
4343 | .rpc_argp = &args, | |
4344 | .rpc_resp = &res, | |
4345 | .rpc_cred = cred, | |
4346 | }; | |
4347 | __be32 *p; | |
4348 | ||
4349 | dprintk("--> %s\n", __func__); | |
4350 | BUG_ON(clp == NULL); | |
a7b72103 | 4351 | |
7b183d0d AB |
4352 | /* Remove server-only flags */ |
4353 | args.flags &= ~EXCHGID4_FLAG_CONFIRMED_R; | |
4354 | ||
99fe60d0 BH |
4355 | p = (u32 *)verifier.data; |
4356 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); | |
4357 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
4358 | args.verifier = &verifier; | |
4359 | ||
4360 | while (1) { | |
4361 | args.id_len = scnprintf(args.id, sizeof(args.id), | |
4362 | "%s/%s %u", | |
4363 | clp->cl_ipaddr, | |
4364 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4365 | RPC_DISPLAY_ADDR), | |
4366 | clp->cl_id_uniquifier); | |
4367 | ||
4368 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
4369 | ||
4370 | if (status != NFS4ERR_CLID_INUSE) | |
4371 | break; | |
4372 | ||
4373 | if (signalled()) | |
4374 | break; | |
4375 | ||
4376 | if (++clp->cl_id_uniquifier == 0) | |
4377 | break; | |
4378 | } | |
4379 | ||
4380 | dprintk("<-- %s status= %d\n", __func__, status); | |
4381 | return status; | |
4382 | } | |
4383 | ||
2050f0cc AA |
4384 | struct nfs4_get_lease_time_data { |
4385 | struct nfs4_get_lease_time_args *args; | |
4386 | struct nfs4_get_lease_time_res *res; | |
4387 | struct nfs_client *clp; | |
4388 | }; | |
4389 | ||
4390 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
4391 | void *calldata) | |
4392 | { | |
4393 | int ret; | |
4394 | struct nfs4_get_lease_time_data *data = | |
4395 | (struct nfs4_get_lease_time_data *)calldata; | |
4396 | ||
4397 | dprintk("--> %s\n", __func__); | |
4398 | /* just setup sequence, do not trigger session recovery | |
4399 | since we're invoked within one */ | |
4400 | ret = nfs41_setup_sequence(data->clp->cl_session, | |
4401 | &data->args->la_seq_args, | |
4402 | &data->res->lr_seq_res, 0, task); | |
4403 | ||
4404 | BUG_ON(ret == -EAGAIN); | |
4405 | rpc_call_start(task); | |
4406 | dprintk("<-- %s\n", __func__); | |
4407 | } | |
4408 | ||
4409 | /* | |
4410 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
4411 | * from sequence operation or clientid errors. | |
4412 | */ | |
4413 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
4414 | { | |
4415 | struct nfs4_get_lease_time_data *data = | |
4416 | (struct nfs4_get_lease_time_data *)calldata; | |
4417 | ||
4418 | dprintk("--> %s\n", __func__); | |
4419 | nfs41_sequence_done(data->clp, &data->res->lr_seq_res, task->tk_status); | |
4420 | switch (task->tk_status) { | |
4421 | case -NFS4ERR_DELAY: | |
4422 | case -NFS4ERR_GRACE: | |
4423 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
4424 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
4425 | task->tk_status = 0; | |
1d9ddde9 | 4426 | rpc_restart_call(task); |
2050f0cc AA |
4427 | return; |
4428 | } | |
4429 | nfs41_sequence_free_slot(data->clp, &data->res->lr_seq_res); | |
4430 | dprintk("<-- %s\n", __func__); | |
4431 | } | |
4432 | ||
4433 | struct rpc_call_ops nfs4_get_lease_time_ops = { | |
4434 | .rpc_call_prepare = nfs4_get_lease_time_prepare, | |
4435 | .rpc_call_done = nfs4_get_lease_time_done, | |
4436 | }; | |
4437 | ||
4438 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
4439 | { | |
4440 | struct rpc_task *task; | |
4441 | struct nfs4_get_lease_time_args args; | |
4442 | struct nfs4_get_lease_time_res res = { | |
4443 | .lr_fsinfo = fsinfo, | |
4444 | }; | |
4445 | struct nfs4_get_lease_time_data data = { | |
4446 | .args = &args, | |
4447 | .res = &res, | |
4448 | .clp = clp, | |
4449 | }; | |
4450 | struct rpc_message msg = { | |
4451 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
4452 | .rpc_argp = &args, | |
4453 | .rpc_resp = &res, | |
4454 | }; | |
4455 | struct rpc_task_setup task_setup = { | |
4456 | .rpc_client = clp->cl_rpcclient, | |
4457 | .rpc_message = &msg, | |
4458 | .callback_ops = &nfs4_get_lease_time_ops, | |
4459 | .callback_data = &data | |
4460 | }; | |
4461 | int status; | |
4462 | ||
4463 | res.lr_seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE; | |
4464 | dprintk("--> %s\n", __func__); | |
4465 | task = rpc_run_task(&task_setup); | |
4466 | ||
4467 | if (IS_ERR(task)) | |
4468 | status = PTR_ERR(task); | |
4469 | else { | |
4470 | status = task->tk_status; | |
4471 | rpc_put_task(task); | |
4472 | } | |
4473 | dprintk("<-- %s return %d\n", __func__, status); | |
4474 | ||
4475 | return status; | |
4476 | } | |
4477 | ||
b73dafa7 RL |
4478 | /* |
4479 | * Reset a slot table | |
4480 | */ | |
4481 | static int nfs4_reset_slot_table(struct nfs4_slot_table *tbl, int max_slots, | |
4482 | int old_max_slots, int ivalue) | |
ac72b7b3 | 4483 | { |
b73dafa7 | 4484 | int i; |
ac72b7b3 AA |
4485 | int ret = 0; |
4486 | ||
b73dafa7 | 4487 | dprintk("--> %s: max_reqs=%u, tbl %p\n", __func__, max_slots, tbl); |
ac72b7b3 | 4488 | |
b73dafa7 RL |
4489 | /* |
4490 | * Until we have dynamic slot table adjustment, insist | |
4491 | * upon the same slot table size | |
4492 | */ | |
ac72b7b3 AA |
4493 | if (max_slots != old_max_slots) { |
4494 | dprintk("%s reset slot table does't match old\n", | |
4495 | __func__); | |
4496 | ret = -EINVAL; /*XXX NFS4ERR_REQ_TOO_BIG ? */ | |
4497 | goto out; | |
4498 | } | |
4499 | spin_lock(&tbl->slot_tbl_lock); | |
4500 | for (i = 0; i < max_slots; ++i) | |
b73dafa7 | 4501 | tbl->slots[i].seq_nr = ivalue; |
ac72b7b3 AA |
4502 | tbl->highest_used_slotid = -1; |
4503 | spin_unlock(&tbl->slot_tbl_lock); | |
4504 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
4505 | tbl, tbl->slots, tbl->max_slots); | |
4506 | out: | |
4507 | dprintk("<-- %s: return %d\n", __func__, ret); | |
4508 | return ret; | |
4509 | } | |
4510 | ||
b73dafa7 RL |
4511 | /* |
4512 | * Reset the forechannel and backchannel slot tables | |
4513 | */ | |
4514 | static int nfs4_reset_slot_tables(struct nfs4_session *session) | |
4515 | { | |
4516 | int status; | |
4517 | ||
4518 | status = nfs4_reset_slot_table(&session->fc_slot_table, | |
4519 | session->fc_attrs.max_reqs, | |
4520 | session->fc_slot_table.max_slots, | |
4521 | 1); | |
f8625a6a RL |
4522 | if (status) |
4523 | return status; | |
ea028ac9 | 4524 | init_completion(&session->complete); |
f8625a6a RL |
4525 | |
4526 | status = nfs4_reset_slot_table(&session->bc_slot_table, | |
4527 | session->bc_attrs.max_reqs, | |
4528 | session->bc_slot_table.max_slots, | |
4529 | 0); | |
b73dafa7 RL |
4530 | return status; |
4531 | } | |
4532 | ||
f8625a6a RL |
4533 | /* Destroy the slot table */ |
4534 | static void nfs4_destroy_slot_tables(struct nfs4_session *session) | |
4535 | { | |
4536 | if (session->fc_slot_table.slots != NULL) { | |
4537 | kfree(session->fc_slot_table.slots); | |
4538 | session->fc_slot_table.slots = NULL; | |
4539 | } | |
4540 | if (session->bc_slot_table.slots != NULL) { | |
4541 | kfree(session->bc_slot_table.slots); | |
4542 | session->bc_slot_table.slots = NULL; | |
4543 | } | |
4544 | return; | |
4545 | } | |
4546 | ||
fc931582 AA |
4547 | /* |
4548 | * Initialize slot table | |
4549 | */ | |
050047ce RL |
4550 | static int nfs4_init_slot_table(struct nfs4_slot_table *tbl, |
4551 | int max_slots, int ivalue) | |
fc931582 | 4552 | { |
050047ce | 4553 | int i; |
fc931582 AA |
4554 | struct nfs4_slot *slot; |
4555 | int ret = -ENOMEM; | |
4556 | ||
4557 | BUG_ON(max_slots > NFS4_MAX_SLOT_TABLE); | |
4558 | ||
050047ce | 4559 | dprintk("--> %s: max_reqs=%u\n", __func__, max_slots); |
fc931582 AA |
4560 | |
4561 | slot = kcalloc(max_slots, sizeof(struct nfs4_slot), GFP_KERNEL); | |
4562 | if (!slot) | |
4563 | goto out; | |
4564 | for (i = 0; i < max_slots; ++i) | |
050047ce | 4565 | slot[i].seq_nr = ivalue; |
fc931582 AA |
4566 | ret = 0; |
4567 | ||
4568 | spin_lock(&tbl->slot_tbl_lock); | |
4569 | if (tbl->slots != NULL) { | |
4570 | spin_unlock(&tbl->slot_tbl_lock); | |
4571 | dprintk("%s: slot table already initialized. tbl=%p slots=%p\n", | |
4572 | __func__, tbl, tbl->slots); | |
4573 | WARN_ON(1); | |
4574 | goto out_free; | |
4575 | } | |
4576 | tbl->max_slots = max_slots; | |
4577 | tbl->slots = slot; | |
4578 | tbl->highest_used_slotid = -1; /* no slot is currently used */ | |
4579 | spin_unlock(&tbl->slot_tbl_lock); | |
4580 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
4581 | tbl, tbl->slots, tbl->max_slots); | |
4582 | out: | |
4583 | dprintk("<-- %s: return %d\n", __func__, ret); | |
4584 | return ret; | |
050047ce | 4585 | |
fc931582 AA |
4586 | out_free: |
4587 | kfree(slot); | |
4588 | goto out; | |
4589 | } | |
4590 | ||
050047ce RL |
4591 | /* |
4592 | * Initialize the forechannel and backchannel tables | |
4593 | */ | |
4594 | static int nfs4_init_slot_tables(struct nfs4_session *session) | |
4595 | { | |
4596 | int status; | |
4597 | ||
4598 | status = nfs4_init_slot_table(&session->fc_slot_table, | |
4599 | session->fc_attrs.max_reqs, 1); | |
f8625a6a RL |
4600 | if (status) |
4601 | return status; | |
050047ce | 4602 | |
f8625a6a RL |
4603 | status = nfs4_init_slot_table(&session->bc_slot_table, |
4604 | session->bc_attrs.max_reqs, 0); | |
4605 | if (status) | |
4606 | nfs4_destroy_slot_tables(session); | |
4607 | ||
4608 | return status; | |
557134a3 AA |
4609 | } |
4610 | ||
4611 | struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) | |
4612 | { | |
4613 | struct nfs4_session *session; | |
4614 | struct nfs4_slot_table *tbl; | |
4615 | ||
4616 | session = kzalloc(sizeof(struct nfs4_session), GFP_KERNEL); | |
4617 | if (!session) | |
4618 | return NULL; | |
76db6d95 | 4619 | |
76db6d95 AA |
4620 | /* |
4621 | * The create session reply races with the server back | |
4622 | * channel probe. Mark the client NFS_CS_SESSION_INITING | |
4623 | * so that the client back channel can find the | |
4624 | * nfs_client struct | |
4625 | */ | |
4626 | clp->cl_cons_state = NFS_CS_SESSION_INITING; | |
ea028ac9 | 4627 | init_completion(&session->complete); |
76db6d95 | 4628 | |
557134a3 AA |
4629 | tbl = &session->fc_slot_table; |
4630 | spin_lock_init(&tbl->slot_tbl_lock); | |
f8625a6a RL |
4631 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); |
4632 | ||
4633 | tbl = &session->bc_slot_table; | |
4634 | spin_lock_init(&tbl->slot_tbl_lock); | |
4635 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); | |
4636 | ||
557134a3 AA |
4637 | session->clp = clp; |
4638 | return session; | |
4639 | } | |
4640 | ||
4641 | void nfs4_destroy_session(struct nfs4_session *session) | |
4642 | { | |
5a0ffe54 AA |
4643 | nfs4_proc_destroy_session(session); |
4644 | dprintk("%s Destroy backchannel for xprt %p\n", | |
4645 | __func__, session->clp->cl_rpcclient->cl_xprt); | |
4646 | xprt_destroy_backchannel(session->clp->cl_rpcclient->cl_xprt, | |
4647 | NFS41_BC_MIN_CALLBACKS); | |
f8625a6a | 4648 | nfs4_destroy_slot_tables(session); |
557134a3 AA |
4649 | kfree(session); |
4650 | } | |
4651 | ||
fc931582 AA |
4652 | /* |
4653 | * Initialize the values to be used by the client in CREATE_SESSION | |
4654 | * If nfs4_init_session set the fore channel request and response sizes, | |
4655 | * use them. | |
4656 | * | |
4657 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
4658 | * always set csa_cachethis to FALSE because the current implementation | |
4659 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
4660 | */ | |
4661 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
4662 | { | |
4663 | struct nfs4_session *session = args->client->cl_session; | |
4664 | unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz, | |
4665 | mxresp_sz = session->fc_attrs.max_resp_sz; | |
4666 | ||
4667 | if (mxrqst_sz == 0) | |
4668 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
4669 | if (mxresp_sz == 0) | |
4670 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
4671 | /* Fore channel attributes */ | |
4672 | args->fc_attrs.headerpadsz = 0; | |
4673 | args->fc_attrs.max_rqst_sz = mxrqst_sz; | |
4674 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
4675 | args->fc_attrs.max_resp_sz_cached = mxresp_sz; | |
4676 | args->fc_attrs.max_ops = NFS4_MAX_OPS; | |
4677 | args->fc_attrs.max_reqs = session->clp->cl_rpcclient->cl_xprt->max_reqs; | |
4678 | ||
4679 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
4680 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
4681 | __func__, | |
4682 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
4683 | args->fc_attrs.max_resp_sz_cached, args->fc_attrs.max_ops, | |
4684 | args->fc_attrs.max_reqs); | |
4685 | ||
4686 | /* Back channel attributes */ | |
4687 | args->bc_attrs.headerpadsz = 0; | |
4688 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; | |
4689 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
4690 | args->bc_attrs.max_resp_sz_cached = 0; | |
4691 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
4692 | args->bc_attrs.max_reqs = 1; | |
4693 | ||
4694 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
4695 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
4696 | __func__, | |
4697 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
4698 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
4699 | args->bc_attrs.max_reqs); | |
4700 | } | |
4701 | ||
8d35301d AA |
4702 | static int _verify_channel_attr(char *chan, char *attr_name, u32 sent, u32 rcvd) |
4703 | { | |
4704 | if (rcvd <= sent) | |
4705 | return 0; | |
4706 | printk(KERN_WARNING "%s: Session INVALID: %s channel %s increased. " | |
4707 | "sent=%u rcvd=%u\n", __func__, chan, attr_name, sent, rcvd); | |
4708 | return -EINVAL; | |
4709 | } | |
4710 | ||
4711 | #define _verify_fore_channel_attr(_name_) \ | |
4712 | _verify_channel_attr("fore", #_name_, \ | |
4713 | args->fc_attrs._name_, \ | |
4714 | session->fc_attrs._name_) | |
4715 | ||
4716 | #define _verify_back_channel_attr(_name_) \ | |
4717 | _verify_channel_attr("back", #_name_, \ | |
4718 | args->bc_attrs._name_, \ | |
4719 | session->bc_attrs._name_) | |
4720 | ||
4721 | /* | |
4722 | * The server is not allowed to increase the fore channel header pad size, | |
4723 | * maximum response size, or maximum number of operations. | |
4724 | * | |
4725 | * The back channel attributes are only negotiatied down: We send what the | |
4726 | * (back channel) server insists upon. | |
4727 | */ | |
4728 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, | |
4729 | struct nfs4_session *session) | |
4730 | { | |
4731 | int ret = 0; | |
4732 | ||
4733 | ret |= _verify_fore_channel_attr(headerpadsz); | |
4734 | ret |= _verify_fore_channel_attr(max_resp_sz); | |
4735 | ret |= _verify_fore_channel_attr(max_ops); | |
4736 | ||
4737 | ret |= _verify_back_channel_attr(headerpadsz); | |
4738 | ret |= _verify_back_channel_attr(max_rqst_sz); | |
4739 | ret |= _verify_back_channel_attr(max_resp_sz); | |
4740 | ret |= _verify_back_channel_attr(max_resp_sz_cached); | |
4741 | ret |= _verify_back_channel_attr(max_ops); | |
4742 | ret |= _verify_back_channel_attr(max_reqs); | |
4743 | ||
4744 | return ret; | |
4745 | } | |
4746 | ||
fc931582 AA |
4747 | static int _nfs4_proc_create_session(struct nfs_client *clp) |
4748 | { | |
4749 | struct nfs4_session *session = clp->cl_session; | |
4750 | struct nfs41_create_session_args args = { | |
4751 | .client = clp, | |
4752 | .cb_program = NFS4_CALLBACK, | |
4753 | }; | |
4754 | struct nfs41_create_session_res res = { | |
4755 | .client = clp, | |
4756 | }; | |
4757 | struct rpc_message msg = { | |
4758 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
4759 | .rpc_argp = &args, | |
4760 | .rpc_resp = &res, | |
4761 | }; | |
4762 | int status; | |
4763 | ||
4764 | nfs4_init_channel_attrs(&args); | |
0f91421e | 4765 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 AA |
4766 | |
4767 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, 0); | |
4768 | ||
8d35301d AA |
4769 | if (!status) |
4770 | /* Verify the session's negotiated channel_attrs values */ | |
4771 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
4772 | if (!status) { |
4773 | /* Increment the clientid slot sequence id */ | |
4774 | clp->cl_seqid++; | |
4775 | } | |
4776 | ||
4777 | return status; | |
4778 | } | |
4779 | ||
4780 | /* | |
4781 | * Issues a CREATE_SESSION operation to the server. | |
4782 | * It is the responsibility of the caller to verify the session is | |
4783 | * expired before calling this routine. | |
4784 | */ | |
ac72b7b3 | 4785 | int nfs4_proc_create_session(struct nfs_client *clp, int reset) |
fc931582 AA |
4786 | { |
4787 | int status; | |
4788 | unsigned *ptr; | |
4789 | struct nfs_fsinfo fsinfo; | |
4790 | struct nfs4_session *session = clp->cl_session; | |
4791 | ||
4792 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
4793 | ||
4794 | status = _nfs4_proc_create_session(clp); | |
4795 | if (status) | |
4796 | goto out; | |
4797 | ||
ac72b7b3 AA |
4798 | /* Init or reset the fore channel */ |
4799 | if (reset) | |
b73dafa7 | 4800 | status = nfs4_reset_slot_tables(session); |
ac72b7b3 | 4801 | else |
050047ce | 4802 | status = nfs4_init_slot_tables(session); |
fc931582 AA |
4803 | dprintk("fore channel slot table initialization returned %d\n", status); |
4804 | if (status) | |
4805 | goto out; | |
4806 | ||
4807 | ptr = (unsigned *)&session->sess_id.data[0]; | |
4808 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
4809 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
4810 | ||
ac72b7b3 AA |
4811 | if (reset) |
4812 | /* Lease time is aleady set */ | |
4813 | goto out; | |
4814 | ||
fc931582 AA |
4815 | /* Get the lease time */ |
4816 | status = nfs4_proc_get_lease_time(clp, &fsinfo); | |
4817 | if (status == 0) { | |
4818 | /* Update lease time and schedule renewal */ | |
4819 | spin_lock(&clp->cl_lock); | |
4820 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
4821 | clp->cl_last_renewal = jiffies; | |
4822 | clear_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state); | |
4823 | spin_unlock(&clp->cl_lock); | |
4824 | ||
4825 | nfs4_schedule_state_renewal(clp); | |
4826 | } | |
4827 | out: | |
4828 | dprintk("<-- %s\n", __func__); | |
4829 | return status; | |
4830 | } | |
4831 | ||
0f3e66c6 AA |
4832 | /* |
4833 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
4834 | * The caller must serialize access to this routine. | |
4835 | */ | |
4836 | int nfs4_proc_destroy_session(struct nfs4_session *session) | |
4837 | { | |
4838 | int status = 0; | |
4839 | struct rpc_message msg; | |
4840 | ||
4841 | dprintk("--> nfs4_proc_destroy_session\n"); | |
4842 | ||
4843 | /* session is still being setup */ | |
4844 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
4845 | return status; | |
4846 | ||
4847 | msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION]; | |
4848 | msg.rpc_argp = session; | |
4849 | msg.rpc_resp = NULL; | |
4850 | msg.rpc_cred = NULL; | |
4851 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, 0); | |
4852 | ||
4853 | if (status) | |
4854 | printk(KERN_WARNING | |
4855 | "Got error %d from the server on DESTROY_SESSION. " | |
4856 | "Session has been destroyed regardless...\n", status); | |
4857 | ||
4858 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
4859 | return status; | |
4860 | } | |
4861 | ||
fccba804 TM |
4862 | int nfs4_init_session(struct nfs_server *server) |
4863 | { | |
4864 | struct nfs_client *clp = server->nfs_client; | |
2449ea2e | 4865 | struct nfs4_session *session; |
fccba804 TM |
4866 | int ret; |
4867 | ||
4868 | if (!nfs4_has_session(clp)) | |
4869 | return 0; | |
4870 | ||
2449ea2e AB |
4871 | session = clp->cl_session; |
4872 | session->fc_attrs.max_rqst_sz = server->wsize + nfs41_maxwrite_overhead; | |
4873 | session->fc_attrs.max_resp_sz = server->rsize + nfs41_maxread_overhead; | |
4874 | ||
fccba804 TM |
4875 | ret = nfs4_recover_expired_lease(server); |
4876 | if (!ret) | |
4877 | ret = nfs4_check_client_ready(clp); | |
4878 | return ret; | |
4879 | } | |
4880 | ||
fc01cea9 AA |
4881 | /* |
4882 | * Renew the cl_session lease. | |
4883 | */ | |
4884 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
4885 | { | |
4886 | struct nfs4_sequence_args args; | |
4887 | struct nfs4_sequence_res res; | |
4888 | ||
4889 | struct rpc_message msg = { | |
4890 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
4891 | .rpc_argp = &args, | |
4892 | .rpc_resp = &res, | |
4893 | .rpc_cred = cred, | |
4894 | }; | |
4895 | ||
4896 | args.sa_cache_this = 0; | |
4897 | ||
4898 | return nfs4_call_sync_sequence(clp, clp->cl_rpcclient, &msg, &args, | |
4899 | &res, 0); | |
4900 | } | |
4901 | ||
4902 | void nfs41_sequence_call_done(struct rpc_task *task, void *data) | |
4903 | { | |
4904 | struct nfs_client *clp = (struct nfs_client *)data; | |
4905 | ||
4906 | nfs41_sequence_done(clp, task->tk_msg.rpc_resp, task->tk_status); | |
4907 | ||
4908 | if (task->tk_status < 0) { | |
4909 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
4910 | ||
4911 | if (_nfs4_async_handle_error(task, NULL, clp, NULL) | |
4912 | == -EAGAIN) { | |
e608e79f | 4913 | nfs4_restart_rpc(task, clp, task->tk_msg.rpc_resp); |
fc01cea9 AA |
4914 | return; |
4915 | } | |
4916 | } | |
4917 | nfs41_sequence_free_slot(clp, task->tk_msg.rpc_resp); | |
4918 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); | |
4919 | ||
fc01cea9 AA |
4920 | kfree(task->tk_msg.rpc_argp); |
4921 | kfree(task->tk_msg.rpc_resp); | |
4922 | ||
4923 | dprintk("<-- %s\n", __func__); | |
4924 | } | |
4925 | ||
4926 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
4927 | { | |
4928 | struct nfs_client *clp; | |
4929 | struct nfs4_sequence_args *args; | |
4930 | struct nfs4_sequence_res *res; | |
4931 | ||
4932 | clp = (struct nfs_client *)data; | |
4933 | args = task->tk_msg.rpc_argp; | |
4934 | res = task->tk_msg.rpc_resp; | |
4935 | ||
4936 | if (nfs4_setup_sequence(clp, args, res, 0, task)) | |
4937 | return; | |
4938 | rpc_call_start(task); | |
4939 | } | |
4940 | ||
4941 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
4942 | .rpc_call_done = nfs41_sequence_call_done, | |
4943 | .rpc_call_prepare = nfs41_sequence_prepare, | |
4944 | }; | |
4945 | ||
4946 | static int nfs41_proc_async_sequence(struct nfs_client *clp, | |
4947 | struct rpc_cred *cred) | |
4948 | { | |
4949 | struct nfs4_sequence_args *args; | |
4950 | struct nfs4_sequence_res *res; | |
4951 | struct rpc_message msg = { | |
4952 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
4953 | .rpc_cred = cred, | |
4954 | }; | |
4955 | ||
4956 | args = kzalloc(sizeof(*args), GFP_KERNEL); | |
4957 | if (!args) | |
4958 | return -ENOMEM; | |
4959 | res = kzalloc(sizeof(*res), GFP_KERNEL); | |
4960 | if (!res) { | |
4961 | kfree(args); | |
4962 | return -ENOMEM; | |
4963 | } | |
4964 | res->sr_slotid = NFS4_MAX_SLOT_TABLE; | |
4965 | msg.rpc_argp = args; | |
4966 | msg.rpc_resp = res; | |
4967 | ||
4968 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, | |
4969 | &nfs41_sequence_ops, (void *)clp); | |
4970 | } | |
4971 | ||
557134a3 AA |
4972 | #endif /* CONFIG_NFS_V4_1 */ |
4973 | ||
591d71cb | 4974 | struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 4975 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 4976 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
4977 | .recover_open = nfs4_open_reclaim, |
4978 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 4979 | .establish_clid = nfs4_init_clientid, |
90a16617 | 4980 | .get_clid_cred = nfs4_get_setclientid_cred, |
1da177e4 LT |
4981 | }; |
4982 | ||
591d71cb AA |
4983 | #if defined(CONFIG_NFS_V4_1) |
4984 | struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { | |
4985 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, | |
4986 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
4987 | .recover_open = nfs4_open_reclaim, | |
4988 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 4989 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 4990 | .get_clid_cred = nfs4_get_exchange_id_cred, |
591d71cb AA |
4991 | }; |
4992 | #endif /* CONFIG_NFS_V4_1 */ | |
4993 | ||
4994 | struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { | |
4995 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, | |
4996 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
4997 | .recover_open = nfs4_open_expired, | |
4998 | .recover_lock = nfs4_lock_expired, | |
4999 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 5000 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
5001 | }; |
5002 | ||
5003 | #if defined(CONFIG_NFS_V4_1) | |
5004 | struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { | |
7eff03ae | 5005 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 5006 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
1da177e4 LT |
5007 | .recover_open = nfs4_open_expired, |
5008 | .recover_lock = nfs4_lock_expired, | |
4d643d1d | 5009 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 5010 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 5011 | }; |
591d71cb | 5012 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 5013 | |
29fba38b BH |
5014 | struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
5015 | .sched_state_renewal = nfs4_proc_async_renew, | |
a7b72103 | 5016 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 5017 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
5018 | }; |
5019 | ||
5020 | #if defined(CONFIG_NFS_V4_1) | |
5021 | struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { | |
5022 | .sched_state_renewal = nfs41_proc_async_sequence, | |
a7b72103 | 5023 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 5024 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
5025 | }; |
5026 | #endif | |
5027 | ||
5028 | /* | |
5029 | * Per minor version reboot and network partition recovery ops | |
5030 | */ | |
5031 | ||
591d71cb AA |
5032 | struct nfs4_state_recovery_ops *nfs4_reboot_recovery_ops[] = { |
5033 | &nfs40_reboot_recovery_ops, | |
5034 | #if defined(CONFIG_NFS_V4_1) | |
5035 | &nfs41_reboot_recovery_ops, | |
5036 | #endif | |
5037 | }; | |
5038 | ||
5039 | struct nfs4_state_recovery_ops *nfs4_nograce_recovery_ops[] = { | |
5040 | &nfs40_nograce_recovery_ops, | |
5041 | #if defined(CONFIG_NFS_V4_1) | |
5042 | &nfs41_nograce_recovery_ops, | |
5043 | #endif | |
5044 | }; | |
5045 | ||
29fba38b BH |
5046 | struct nfs4_state_maintenance_ops *nfs4_state_renewal_ops[] = { |
5047 | &nfs40_state_renewal_ops, | |
5048 | #if defined(CONFIG_NFS_V4_1) | |
5049 | &nfs41_state_renewal_ops, | |
5050 | #endif | |
5051 | }; | |
5052 | ||
92e1d5be | 5053 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
5054 | .permission = nfs_permission, |
5055 | .getattr = nfs_getattr, | |
5056 | .setattr = nfs_setattr, | |
5057 | .getxattr = nfs4_getxattr, | |
5058 | .setxattr = nfs4_setxattr, | |
5059 | .listxattr = nfs4_listxattr, | |
5060 | }; | |
5061 | ||
509de811 | 5062 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
5063 | .version = 4, /* protocol version */ |
5064 | .dentry_ops = &nfs4_dentry_operations, | |
5065 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 5066 | .file_inode_ops = &nfs4_file_inode_operations, |
1da177e4 LT |
5067 | .getroot = nfs4_proc_get_root, |
5068 | .getattr = nfs4_proc_getattr, | |
5069 | .setattr = nfs4_proc_setattr, | |
2b3de441 | 5070 | .lookupfh = nfs4_proc_lookupfh, |
1da177e4 LT |
5071 | .lookup = nfs4_proc_lookup, |
5072 | .access = nfs4_proc_access, | |
5073 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
5074 | .create = nfs4_proc_create, |
5075 | .remove = nfs4_proc_remove, | |
5076 | .unlink_setup = nfs4_proc_unlink_setup, | |
5077 | .unlink_done = nfs4_proc_unlink_done, | |
5078 | .rename = nfs4_proc_rename, | |
5079 | .link = nfs4_proc_link, | |
5080 | .symlink = nfs4_proc_symlink, | |
5081 | .mkdir = nfs4_proc_mkdir, | |
5082 | .rmdir = nfs4_proc_remove, | |
5083 | .readdir = nfs4_proc_readdir, | |
5084 | .mknod = nfs4_proc_mknod, | |
5085 | .statfs = nfs4_proc_statfs, | |
5086 | .fsinfo = nfs4_proc_fsinfo, | |
5087 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 5088 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
5089 | .decode_dirent = nfs4_decode_dirent, |
5090 | .read_setup = nfs4_proc_read_setup, | |
ec06c096 | 5091 | .read_done = nfs4_read_done, |
1da177e4 | 5092 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 5093 | .write_done = nfs4_write_done, |
1da177e4 | 5094 | .commit_setup = nfs4_proc_commit_setup, |
788e7a89 | 5095 | .commit_done = nfs4_commit_done, |
1da177e4 | 5096 | .lock = nfs4_proc_lock, |
e50a1c2e | 5097 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 5098 | .close_context = nfs4_close_context, |
1da177e4 LT |
5099 | }; |
5100 | ||
5101 | /* | |
5102 | * Local variables: | |
5103 | * c-basic-offset: 8 | |
5104 | * End: | |
5105 | */ |