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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4proc.c | |
3 | * | |
4 | * Client-side procedure declarations for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/mm.h> | |
39 | #include <linux/utsname.h> | |
40 | #include <linux/delay.h> | |
41 | #include <linux/errno.h> | |
42 | #include <linux/string.h> | |
43 | #include <linux/sunrpc/clnt.h> | |
44 | #include <linux/nfs.h> | |
45 | #include <linux/nfs4.h> | |
46 | #include <linux/nfs_fs.h> | |
47 | #include <linux/nfs_page.h> | |
48 | #include <linux/smp_lock.h> | |
49 | #include <linux/namei.h> | |
02a913a7 | 50 | #include <linux/mount.h> |
1da177e4 | 51 | |
4ce79717 | 52 | #include "nfs4_fs.h" |
1da177e4 | 53 | #include "delegation.h" |
101070ca | 54 | #include "internal.h" |
006ea73e | 55 | #include "iostat.h" |
1da177e4 LT |
56 | |
57 | #define NFSDBG_FACILITY NFSDBG_PROC | |
58 | ||
2066fe89 | 59 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
60 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
61 | ||
cdd4e68b | 62 | struct nfs4_opendata; |
864472e9 | 63 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
1da177e4 | 64 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
9e33bed5 | 65 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); |
9936781d TM |
66 | static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr); |
67 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); | |
1da177e4 | 68 | |
1da177e4 | 69 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 70 | static int nfs4_map_errors(int err) |
1da177e4 LT |
71 | { |
72 | if (err < -1000) { | |
73 | dprintk("%s could not handle NFSv4 error %d\n", | |
3110ff80 | 74 | __func__, -err); |
1da177e4 LT |
75 | return -EIO; |
76 | } | |
77 | return err; | |
78 | } | |
79 | ||
80 | /* | |
81 | * This is our standard bitmap for GETATTR requests. | |
82 | */ | |
83 | const u32 nfs4_fattr_bitmap[2] = { | |
84 | FATTR4_WORD0_TYPE | |
85 | | FATTR4_WORD0_CHANGE | |
86 | | FATTR4_WORD0_SIZE | |
87 | | FATTR4_WORD0_FSID | |
88 | | FATTR4_WORD0_FILEID, | |
89 | FATTR4_WORD1_MODE | |
90 | | FATTR4_WORD1_NUMLINKS | |
91 | | FATTR4_WORD1_OWNER | |
92 | | FATTR4_WORD1_OWNER_GROUP | |
93 | | FATTR4_WORD1_RAWDEV | |
94 | | FATTR4_WORD1_SPACE_USED | |
95 | | FATTR4_WORD1_TIME_ACCESS | |
96 | | FATTR4_WORD1_TIME_METADATA | |
97 | | FATTR4_WORD1_TIME_MODIFY | |
98 | }; | |
99 | ||
100 | const u32 nfs4_statfs_bitmap[2] = { | |
101 | FATTR4_WORD0_FILES_AVAIL | |
102 | | FATTR4_WORD0_FILES_FREE | |
103 | | FATTR4_WORD0_FILES_TOTAL, | |
104 | FATTR4_WORD1_SPACE_AVAIL | |
105 | | FATTR4_WORD1_SPACE_FREE | |
106 | | FATTR4_WORD1_SPACE_TOTAL | |
107 | }; | |
108 | ||
4ce79717 | 109 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
110 | FATTR4_WORD0_MAXLINK |
111 | | FATTR4_WORD0_MAXNAME, | |
112 | 0 | |
113 | }; | |
114 | ||
115 | const u32 nfs4_fsinfo_bitmap[2] = { FATTR4_WORD0_MAXFILESIZE | |
116 | | FATTR4_WORD0_MAXREAD | |
117 | | FATTR4_WORD0_MAXWRITE | |
118 | | FATTR4_WORD0_LEASE_TIME, | |
119 | 0 | |
120 | }; | |
121 | ||
830b8e33 MN |
122 | const u32 nfs4_fs_locations_bitmap[2] = { |
123 | FATTR4_WORD0_TYPE | |
124 | | FATTR4_WORD0_CHANGE | |
125 | | FATTR4_WORD0_SIZE | |
126 | | FATTR4_WORD0_FSID | |
127 | | FATTR4_WORD0_FILEID | |
128 | | FATTR4_WORD0_FS_LOCATIONS, | |
129 | FATTR4_WORD1_MODE | |
130 | | FATTR4_WORD1_NUMLINKS | |
131 | | FATTR4_WORD1_OWNER | |
132 | | FATTR4_WORD1_OWNER_GROUP | |
133 | | FATTR4_WORD1_RAWDEV | |
134 | | FATTR4_WORD1_SPACE_USED | |
135 | | FATTR4_WORD1_TIME_ACCESS | |
136 | | FATTR4_WORD1_TIME_METADATA | |
137 | | FATTR4_WORD1_TIME_MODIFY | |
138 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
139 | }; | |
140 | ||
bc4785cd | 141 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
142 | struct nfs4_readdir_arg *readdir) |
143 | { | |
0dbb4c67 | 144 | __be32 *start, *p; |
1da177e4 LT |
145 | |
146 | BUG_ON(readdir->count < 80); | |
147 | if (cookie > 2) { | |
b7ef1956 | 148 | readdir->cookie = cookie; |
1da177e4 LT |
149 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
150 | return; | |
151 | } | |
152 | ||
153 | readdir->cookie = 0; | |
154 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
155 | if (cookie == 2) | |
156 | return; | |
157 | ||
158 | /* | |
159 | * NFSv4 servers do not return entries for '.' and '..' | |
160 | * Therefore, we fake these entries here. We let '.' | |
161 | * have cookie 0 and '..' have cookie 1. Note that | |
162 | * when talking to the server, we always send cookie 0 | |
163 | * instead of 1 or 2. | |
164 | */ | |
0dbb4c67 | 165 | start = p = kmap_atomic(*readdir->pages, KM_USER0); |
1da177e4 LT |
166 | |
167 | if (cookie == 0) { | |
168 | *p++ = xdr_one; /* next */ | |
169 | *p++ = xdr_zero; /* cookie, first word */ | |
170 | *p++ = xdr_one; /* cookie, second word */ | |
171 | *p++ = xdr_one; /* entry len */ | |
172 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
173 | p++; | |
174 | *p++ = xdr_one; /* bitmap length */ | |
175 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
176 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 177 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
178 | } |
179 | ||
180 | *p++ = xdr_one; /* next */ | |
181 | *p++ = xdr_zero; /* cookie, first word */ | |
182 | *p++ = xdr_two; /* cookie, second word */ | |
183 | *p++ = xdr_two; /* entry len */ | |
184 | memcpy(p, "..\0\0", 4); /* entry */ | |
185 | p++; | |
186 | *p++ = xdr_one; /* bitmap length */ | |
187 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
188 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 189 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
190 | |
191 | readdir->pgbase = (char *)p - (char *)start; | |
192 | readdir->count -= readdir->pgbase; | |
193 | kunmap_atomic(start, KM_USER0); | |
194 | } | |
195 | ||
65de872e TM |
196 | static int nfs4_wait_clnt_recover(struct nfs_client *clp) |
197 | { | |
198 | int res; | |
199 | ||
200 | might_sleep(); | |
201 | ||
e005e804 | 202 | res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING, |
72cb77f4 | 203 | nfs_wait_bit_killable, TASK_KILLABLE); |
65de872e TM |
204 | return res; |
205 | } | |
206 | ||
207 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) | |
208 | { | |
209 | int res = 0; | |
210 | ||
211 | might_sleep(); | |
212 | ||
213 | if (*timeout <= 0) | |
214 | *timeout = NFS4_POLL_RETRY_MIN; | |
215 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
216 | *timeout = NFS4_POLL_RETRY_MAX; | |
217 | schedule_timeout_killable(*timeout); | |
218 | if (fatal_signal_pending(current)) | |
219 | res = -ERESTARTSYS; | |
220 | *timeout <<= 1; | |
221 | return res; | |
222 | } | |
223 | ||
224 | /* This is the error handling routine for processes that are allowed | |
225 | * to sleep. | |
226 | */ | |
227 | static int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception) | |
228 | { | |
229 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 230 | struct nfs4_state *state = exception->state; |
65de872e TM |
231 | int ret = errorcode; |
232 | ||
233 | exception->retry = 0; | |
234 | switch(errorcode) { | |
235 | case 0: | |
236 | return 0; | |
9e33bed5 TM |
237 | case -NFS4ERR_ADMIN_REVOKED: |
238 | case -NFS4ERR_BAD_STATEID: | |
239 | case -NFS4ERR_OPENMODE: | |
240 | if (state == NULL) | |
241 | break; | |
242 | nfs4_state_mark_reclaim_nograce(clp, state); | |
65de872e TM |
243 | case -NFS4ERR_STALE_CLIENTID: |
244 | case -NFS4ERR_STALE_STATEID: | |
245 | case -NFS4ERR_EXPIRED: | |
246 | nfs4_schedule_state_recovery(clp); | |
247 | ret = nfs4_wait_clnt_recover(clp); | |
248 | if (ret == 0) | |
249 | exception->retry = 1; | |
250 | break; | |
251 | case -NFS4ERR_FILE_OPEN: | |
252 | case -NFS4ERR_GRACE: | |
253 | case -NFS4ERR_DELAY: | |
254 | ret = nfs4_delay(server->client, &exception->timeout); | |
255 | if (ret != 0) | |
256 | break; | |
257 | case -NFS4ERR_OLD_STATEID: | |
258 | exception->retry = 1; | |
259 | } | |
260 | /* We failed to handle the error */ | |
261 | return nfs4_map_errors(ret); | |
262 | } | |
263 | ||
264 | ||
26e976a8 | 265 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
1da177e4 | 266 | { |
7539bbab | 267 | struct nfs_client *clp = server->nfs_client; |
1da177e4 LT |
268 | spin_lock(&clp->cl_lock); |
269 | if (time_before(clp->cl_last_renewal,timestamp)) | |
270 | clp->cl_last_renewal = timestamp; | |
271 | spin_unlock(&clp->cl_lock); | |
272 | } | |
273 | ||
cccef3b9 AA |
274 | #if defined(CONFIG_NFS_V4_1) |
275 | ||
e2c4ab3c AA |
276 | /* |
277 | * nfs4_free_slot - free a slot and efficiently update slot table. | |
278 | * | |
279 | * freeing a slot is trivially done by clearing its respective bit | |
280 | * in the bitmap. | |
281 | * If the freed slotid equals highest_used_slotid we want to update it | |
282 | * so that the server would be able to size down the slot table if needed, | |
283 | * otherwise we know that the highest_used_slotid is still in use. | |
284 | * When updating highest_used_slotid there may be "holes" in the bitmap | |
285 | * so we need to scan down from highest_used_slotid to 0 looking for the now | |
286 | * highest slotid in use. | |
287 | * If none found, highest_used_slotid is set to -1. | |
288 | */ | |
289 | static void | |
290 | nfs4_free_slot(struct nfs4_slot_table *tbl, u8 free_slotid) | |
291 | { | |
292 | int slotid = free_slotid; | |
293 | ||
294 | spin_lock(&tbl->slot_tbl_lock); | |
295 | /* clear used bit in bitmap */ | |
296 | __clear_bit(slotid, tbl->used_slots); | |
297 | ||
298 | /* update highest_used_slotid when it is freed */ | |
299 | if (slotid == tbl->highest_used_slotid) { | |
300 | slotid = find_last_bit(tbl->used_slots, tbl->max_slots); | |
301 | if (slotid >= 0 && slotid < tbl->max_slots) | |
302 | tbl->highest_used_slotid = slotid; | |
303 | else | |
304 | tbl->highest_used_slotid = -1; | |
305 | } | |
306 | rpc_wake_up_next(&tbl->slot_tbl_waitq); | |
307 | spin_unlock(&tbl->slot_tbl_lock); | |
308 | dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__, | |
309 | free_slotid, tbl->highest_used_slotid); | |
310 | } | |
311 | ||
13615871 AA |
312 | void nfs41_sequence_free_slot(const struct nfs_client *clp, |
313 | struct nfs4_sequence_res *res) | |
314 | { | |
315 | struct nfs4_slot_table *tbl; | |
316 | ||
317 | if (!nfs4_has_session(clp)) { | |
318 | dprintk("%s: No session\n", __func__); | |
319 | return; | |
320 | } | |
321 | tbl = &clp->cl_session->fc_slot_table; | |
322 | if (res->sr_slotid == NFS4_MAX_SLOT_TABLE) { | |
323 | dprintk("%s: No slot\n", __func__); | |
324 | /* just wake up the next guy waiting since | |
325 | * we may have not consumed a slot after all */ | |
326 | rpc_wake_up_next(&tbl->slot_tbl_waitq); | |
327 | return; | |
328 | } | |
329 | nfs4_free_slot(tbl, res->sr_slotid); | |
330 | res->sr_slotid = NFS4_MAX_SLOT_TABLE; | |
331 | } | |
332 | ||
b0df806c AA |
333 | static void nfs41_sequence_done(struct nfs_client *clp, |
334 | struct nfs4_sequence_res *res, | |
335 | int rpc_status) | |
336 | { | |
337 | unsigned long timestamp; | |
338 | struct nfs4_slot_table *tbl; | |
339 | struct nfs4_slot *slot; | |
340 | ||
341 | /* | |
342 | * sr_status remains 1 if an RPC level error occurred. The server | |
343 | * may or may not have processed the sequence operation.. | |
344 | * Proceed as if the server received and processed the sequence | |
345 | * operation. | |
346 | */ | |
347 | if (res->sr_status == 1) | |
348 | res->sr_status = NFS_OK; | |
349 | ||
350 | /* -ERESTARTSYS can result in skipping nfs41_sequence_setup */ | |
351 | if (res->sr_slotid == NFS4_MAX_SLOT_TABLE) | |
352 | goto out; | |
353 | ||
354 | tbl = &clp->cl_session->fc_slot_table; | |
355 | slot = tbl->slots + res->sr_slotid; | |
356 | ||
357 | if (res->sr_status == 0) { | |
358 | /* Update the slot's sequence and clientid lease timer */ | |
359 | ++slot->seq_nr; | |
360 | timestamp = res->sr_renewal_time; | |
361 | spin_lock(&clp->cl_lock); | |
362 | if (time_before(clp->cl_last_renewal, timestamp)) | |
363 | clp->cl_last_renewal = timestamp; | |
364 | spin_unlock(&clp->cl_lock); | |
365 | return; | |
366 | } | |
367 | out: | |
368 | /* The session may be reset by one of the error handlers. */ | |
369 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
370 | nfs41_sequence_free_slot(clp, res); | |
371 | } | |
372 | ||
510b8175 BH |
373 | /* |
374 | * nfs4_find_slot - efficiently look for a free slot | |
375 | * | |
376 | * nfs4_find_slot looks for an unset bit in the used_slots bitmap. | |
377 | * If found, we mark the slot as used, update the highest_used_slotid, | |
378 | * and respectively set up the sequence operation args. | |
379 | * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise. | |
fbcd4abc AA |
380 | * |
381 | * Note: must be called with under the slot_tbl_lock. | |
510b8175 BH |
382 | */ |
383 | static u8 | |
384 | nfs4_find_slot(struct nfs4_slot_table *tbl, struct rpc_task *task) | |
385 | { | |
386 | int slotid; | |
387 | u8 ret_id = NFS4_MAX_SLOT_TABLE; | |
388 | BUILD_BUG_ON((u8)NFS4_MAX_SLOT_TABLE != (int)NFS4_MAX_SLOT_TABLE); | |
389 | ||
510b8175 BH |
390 | dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n", |
391 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, | |
392 | tbl->max_slots); | |
393 | slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots); | |
394 | if (slotid >= tbl->max_slots) | |
395 | goto out; | |
396 | __set_bit(slotid, tbl->used_slots); | |
397 | if (slotid > tbl->highest_used_slotid) | |
398 | tbl->highest_used_slotid = slotid; | |
399 | ret_id = slotid; | |
400 | out: | |
401 | dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n", | |
402 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, ret_id); | |
510b8175 BH |
403 | return ret_id; |
404 | } | |
405 | ||
ce5039c1 AA |
406 | static int nfs41_setup_sequence(struct nfs4_session *session, |
407 | struct nfs4_sequence_args *args, | |
408 | struct nfs4_sequence_res *res, | |
409 | int cache_reply, | |
410 | struct rpc_task *task) | |
411 | { | |
fbcd4abc AA |
412 | struct nfs4_slot *slot; |
413 | struct nfs4_slot_table *tbl; | |
414 | u8 slotid; | |
415 | ||
416 | dprintk("--> %s\n", __func__); | |
ce5039c1 AA |
417 | /* slot already allocated? */ |
418 | if (res->sr_slotid != NFS4_MAX_SLOT_TABLE) | |
419 | return 0; | |
420 | ||
421 | memset(res, 0, sizeof(*res)); | |
422 | res->sr_slotid = NFS4_MAX_SLOT_TABLE; | |
fbcd4abc AA |
423 | tbl = &session->fc_slot_table; |
424 | ||
425 | spin_lock(&tbl->slot_tbl_lock); | |
426 | slotid = nfs4_find_slot(tbl, task); | |
427 | if (slotid == NFS4_MAX_SLOT_TABLE) { | |
428 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
429 | spin_unlock(&tbl->slot_tbl_lock); | |
430 | dprintk("<-- %s: no free slots\n", __func__); | |
431 | return -EAGAIN; | |
432 | } | |
433 | spin_unlock(&tbl->slot_tbl_lock); | |
434 | ||
435 | slot = tbl->slots + slotid; | |
436 | args->sa_slotid = slotid; | |
437 | args->sa_cache_this = cache_reply; | |
438 | ||
439 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr); | |
440 | ||
441 | res->sr_slotid = slotid; | |
442 | res->sr_renewal_time = jiffies; | |
443 | /* | |
444 | * sr_status is only set in decode_sequence, and so will remain | |
445 | * set to 1 if an rpc level failure occurs. | |
446 | */ | |
447 | res->sr_status = 1; | |
ce5039c1 AA |
448 | return 0; |
449 | } | |
450 | ||
451 | int nfs4_setup_sequence(struct nfs_client *clp, | |
452 | struct nfs4_sequence_args *args, | |
453 | struct nfs4_sequence_res *res, | |
454 | int cache_reply, | |
455 | struct rpc_task *task) | |
456 | { | |
457 | int ret = 0; | |
458 | ||
459 | dprintk("--> %s clp %p session %p sr_slotid %d\n", | |
460 | __func__, clp, clp->cl_session, res->sr_slotid); | |
461 | ||
462 | if (!nfs4_has_session(clp)) | |
463 | goto out; | |
464 | ret = nfs41_setup_sequence(clp->cl_session, args, res, cache_reply, | |
465 | task); | |
466 | if (ret != -EAGAIN) { | |
467 | /* terminate rpc task */ | |
468 | task->tk_status = ret; | |
469 | task->tk_action = NULL; | |
470 | } | |
471 | out: | |
472 | dprintk("<-- %s status=%d\n", __func__, ret); | |
473 | return ret; | |
474 | } | |
475 | ||
476 | struct nfs41_call_sync_data { | |
477 | struct nfs_client *clp; | |
478 | struct nfs4_sequence_args *seq_args; | |
479 | struct nfs4_sequence_res *seq_res; | |
480 | int cache_reply; | |
481 | }; | |
482 | ||
483 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
484 | { | |
485 | struct nfs41_call_sync_data *data = calldata; | |
486 | ||
487 | dprintk("--> %s data->clp->cl_session %p\n", __func__, | |
488 | data->clp->cl_session); | |
489 | if (nfs4_setup_sequence(data->clp, data->seq_args, | |
490 | data->seq_res, data->cache_reply, task)) | |
491 | return; | |
492 | rpc_call_start(task); | |
493 | } | |
494 | ||
69ab40c4 AA |
495 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
496 | { | |
497 | struct nfs41_call_sync_data *data = calldata; | |
498 | ||
499 | nfs41_sequence_done(data->clp, data->seq_res, task->tk_status); | |
500 | nfs41_sequence_free_slot(data->clp, data->seq_res); | |
501 | } | |
502 | ||
ce5039c1 AA |
503 | struct rpc_call_ops nfs41_call_sync_ops = { |
504 | .rpc_call_prepare = nfs41_call_sync_prepare, | |
69ab40c4 | 505 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
506 | }; |
507 | ||
508 | static int nfs4_call_sync_sequence(struct nfs_client *clp, | |
509 | struct rpc_clnt *clnt, | |
510 | struct rpc_message *msg, | |
511 | struct nfs4_sequence_args *args, | |
512 | struct nfs4_sequence_res *res, | |
513 | int cache_reply) | |
514 | { | |
515 | int ret; | |
516 | struct rpc_task *task; | |
517 | struct nfs41_call_sync_data data = { | |
518 | .clp = clp, | |
519 | .seq_args = args, | |
520 | .seq_res = res, | |
521 | .cache_reply = cache_reply, | |
522 | }; | |
523 | struct rpc_task_setup task_setup = { | |
524 | .rpc_client = clnt, | |
525 | .rpc_message = msg, | |
526 | .callback_ops = &nfs41_call_sync_ops, | |
527 | .callback_data = &data | |
528 | }; | |
529 | ||
530 | res->sr_slotid = NFS4_MAX_SLOT_TABLE; | |
531 | task = rpc_run_task(&task_setup); | |
532 | if (IS_ERR(task)) | |
533 | ret = PTR_ERR(task); | |
534 | else { | |
535 | ret = task->tk_status; | |
536 | rpc_put_task(task); | |
537 | } | |
538 | return ret; | |
539 | } | |
540 | ||
cccef3b9 AA |
541 | int _nfs4_call_sync_session(struct nfs_server *server, |
542 | struct rpc_message *msg, | |
543 | struct nfs4_sequence_args *args, | |
544 | struct nfs4_sequence_res *res, | |
545 | int cache_reply) | |
546 | { | |
ce5039c1 AA |
547 | return nfs4_call_sync_sequence(server->nfs_client, server->client, |
548 | msg, args, res, cache_reply); | |
cccef3b9 AA |
549 | } |
550 | ||
551 | #endif /* CONFIG_NFS_V4_1 */ | |
552 | ||
553 | int _nfs4_call_sync(struct nfs_server *server, | |
554 | struct rpc_message *msg, | |
555 | struct nfs4_sequence_args *args, | |
556 | struct nfs4_sequence_res *res, | |
557 | int cache_reply) | |
558 | { | |
f3752975 | 559 | args->sa_session = res->sr_session = NULL; |
cccef3b9 AA |
560 | return rpc_call_sync(server->client, msg, 0); |
561 | } | |
562 | ||
563 | #define nfs4_call_sync(server, msg, args, res, cache_reply) \ | |
564 | (server)->nfs_client->cl_call_sync((server), (msg), &(args)->seq_args, \ | |
565 | &(res)->seq_res, (cache_reply)) | |
566 | ||
b0df806c AA |
567 | static void nfs4_sequence_done(const struct nfs_server *server, |
568 | struct nfs4_sequence_res *res, int rpc_status) | |
569 | { | |
570 | #ifdef CONFIG_NFS_V4_1 | |
571 | if (nfs4_has_session(server->nfs_client)) | |
572 | nfs41_sequence_done(server->nfs_client, res, rpc_status); | |
573 | #endif /* CONFIG_NFS_V4_1 */ | |
574 | } | |
575 | ||
576 | /* no restart, therefore free slot here */ | |
577 | static void nfs4_sequence_done_free_slot(const struct nfs_server *server, | |
578 | struct nfs4_sequence_res *res, | |
579 | int rpc_status) | |
580 | { | |
581 | nfs4_sequence_done(server, res, rpc_status); | |
582 | nfs4_sequence_free_slot(server->nfs_client, res); | |
583 | } | |
584 | ||
38478b24 | 585 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 586 | { |
38478b24 | 587 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 588 | |
38478b24 | 589 | spin_lock(&dir->i_lock); |
40d24704 TM |
590 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; |
591 | if (!cinfo->atomic || cinfo->before != nfsi->change_attr) | |
bfc69a45 | 592 | nfs_force_lookup_revalidate(dir); |
40d24704 | 593 | nfsi->change_attr = cinfo->after; |
38478b24 | 594 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
595 | } |
596 | ||
e56e0b78 | 597 | struct nfs4_opendata { |
c6d00e63 | 598 | struct kref kref; |
e56e0b78 TM |
599 | struct nfs_openargs o_arg; |
600 | struct nfs_openres o_res; | |
cdd4e68b TM |
601 | struct nfs_open_confirmargs c_arg; |
602 | struct nfs_open_confirmres c_res; | |
e56e0b78 TM |
603 | struct nfs_fattr f_attr; |
604 | struct nfs_fattr dir_attr; | |
ad389da7 | 605 | struct path path; |
e56e0b78 TM |
606 | struct dentry *dir; |
607 | struct nfs4_state_owner *owner; | |
aac00a8d | 608 | struct nfs4_state *state; |
e56e0b78 | 609 | struct iattr attrs; |
26e976a8 | 610 | unsigned long timestamp; |
3e309914 | 611 | unsigned int rpc_done : 1; |
24ac23ab TM |
612 | int rpc_status; |
613 | int cancelled; | |
e56e0b78 TM |
614 | }; |
615 | ||
2ced46c2 TM |
616 | |
617 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
618 | { | |
619 | p->o_res.f_attr = &p->f_attr; | |
620 | p->o_res.dir_attr = &p->dir_attr; | |
c1d51931 TM |
621 | p->o_res.seqid = p->o_arg.seqid; |
622 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 TM |
623 | p->o_res.server = p->o_arg.server; |
624 | nfs_fattr_init(&p->f_attr); | |
625 | nfs_fattr_init(&p->dir_attr); | |
626 | } | |
627 | ||
ad389da7 | 628 | static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path, |
dc0b027d | 629 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
e56e0b78 TM |
630 | const struct iattr *attrs) |
631 | { | |
ad389da7 | 632 | struct dentry *parent = dget_parent(path->dentry); |
e56e0b78 TM |
633 | struct inode *dir = parent->d_inode; |
634 | struct nfs_server *server = NFS_SERVER(dir); | |
635 | struct nfs4_opendata *p; | |
636 | ||
637 | p = kzalloc(sizeof(*p), GFP_KERNEL); | |
638 | if (p == NULL) | |
639 | goto err; | |
640 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid); | |
641 | if (p->o_arg.seqid == NULL) | |
642 | goto err_free; | |
ad389da7 TM |
643 | p->path.mnt = mntget(path->mnt); |
644 | p->path.dentry = dget(path->dentry); | |
e56e0b78 TM |
645 | p->dir = parent; |
646 | p->owner = sp; | |
647 | atomic_inc(&sp->so_count); | |
648 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
649 | p->o_arg.open_flags = flags; |
650 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
7539bbab | 651 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 652 | p->o_arg.id = sp->so_owner_id.id; |
ad389da7 | 653 | p->o_arg.name = &p->path.dentry->d_name; |
e56e0b78 TM |
654 | p->o_arg.server = server; |
655 | p->o_arg.bitmask = server->attr_bitmask; | |
656 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; | |
5f7dbd5c | 657 | p->o_res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE; |
e56e0b78 TM |
658 | if (flags & O_EXCL) { |
659 | u32 *s = (u32 *) p->o_arg.u.verifier.data; | |
660 | s[0] = jiffies; | |
661 | s[1] = current->pid; | |
662 | } else if (flags & O_CREAT) { | |
663 | p->o_arg.u.attrs = &p->attrs; | |
664 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
665 | } | |
cdd4e68b TM |
666 | p->c_arg.fh = &p->o_res.fh; |
667 | p->c_arg.stateid = &p->o_res.stateid; | |
668 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 669 | nfs4_init_opendata_res(p); |
c6d00e63 | 670 | kref_init(&p->kref); |
e56e0b78 TM |
671 | return p; |
672 | err_free: | |
673 | kfree(p); | |
674 | err: | |
675 | dput(parent); | |
676 | return NULL; | |
677 | } | |
678 | ||
c6d00e63 | 679 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 680 | { |
c6d00e63 TM |
681 | struct nfs4_opendata *p = container_of(kref, |
682 | struct nfs4_opendata, kref); | |
683 | ||
684 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
685 | if (p->state != NULL) |
686 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
687 | nfs4_put_state_owner(p->owner); |
688 | dput(p->dir); | |
31f31db1 | 689 | path_put(&p->path); |
c6d00e63 TM |
690 | kfree(p); |
691 | } | |
692 | ||
693 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
694 | { | |
695 | if (p != NULL) | |
696 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
697 | } |
698 | ||
06f814a3 TM |
699 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
700 | { | |
06f814a3 TM |
701 | int ret; |
702 | ||
06f814a3 | 703 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
704 | return ret; |
705 | } | |
706 | ||
dc0b027d | 707 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
708 | { |
709 | int ret = 0; | |
dc0b027d TM |
710 | |
711 | if (open_mode & O_EXCL) | |
712 | goto out; | |
713 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 TM |
714 | case FMODE_READ: |
715 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0; | |
6ee41268 TM |
716 | break; |
717 | case FMODE_WRITE: | |
718 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0; | |
6ee41268 TM |
719 | break; |
720 | case FMODE_READ|FMODE_WRITE: | |
721 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0; | |
722 | } | |
dc0b027d | 723 | out: |
6ee41268 TM |
724 | return ret; |
725 | } | |
726 | ||
dc0b027d | 727 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 728 | { |
dc0b027d | 729 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 730 | return 0; |
15c831bf | 731 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 732 | return 0; |
b7391f44 | 733 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
734 | return 1; |
735 | } | |
736 | ||
dc0b027d | 737 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 738 | { |
dc0b027d | 739 | switch (fmode) { |
e7616923 TM |
740 | case FMODE_WRITE: |
741 | state->n_wronly++; | |
742 | break; | |
743 | case FMODE_READ: | |
744 | state->n_rdonly++; | |
745 | break; | |
746 | case FMODE_READ|FMODE_WRITE: | |
747 | state->n_rdwr++; | |
748 | } | |
dc0b027d | 749 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
750 | } |
751 | ||
dc0b027d | 752 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
753 | { |
754 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
755 | memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data)); | |
756 | memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data)); | |
dc0b027d | 757 | switch (fmode) { |
003707c7 TM |
758 | case FMODE_READ: |
759 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
760 | break; | |
761 | case FMODE_WRITE: | |
762 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
763 | break; | |
764 | case FMODE_READ|FMODE_WRITE: | |
765 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
766 | } | |
e7616923 TM |
767 | } |
768 | ||
dc0b027d | 769 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 770 | { |
8bda4e4c | 771 | write_seqlock(&state->seqlock); |
dc0b027d | 772 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 773 | write_sequnlock(&state->seqlock); |
003707c7 TM |
774 | } |
775 | ||
dc0b027d | 776 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 777 | { |
8bda4e4c TM |
778 | /* |
779 | * Protect the call to nfs4_state_set_mode_locked and | |
780 | * serialise the stateid update | |
781 | */ | |
782 | write_seqlock(&state->seqlock); | |
003707c7 TM |
783 | if (deleg_stateid != NULL) { |
784 | memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data)); | |
785 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
786 | } | |
787 | if (open_stateid != NULL) | |
dc0b027d | 788 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
789 | write_sequnlock(&state->seqlock); |
790 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 791 | update_open_stateflags(state, fmode); |
ec073428 | 792 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
793 | } |
794 | ||
dc0b027d | 795 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
796 | { |
797 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
798 | struct nfs_delegation *deleg_cur; | |
799 | int ret = 0; | |
800 | ||
dc0b027d | 801 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
802 | |
803 | rcu_read_lock(); | |
804 | deleg_cur = rcu_dereference(nfsi->delegation); | |
805 | if (deleg_cur == NULL) | |
806 | goto no_delegation; | |
807 | ||
808 | spin_lock(&deleg_cur->lock); | |
809 | if (nfsi->delegation != deleg_cur || | |
dc0b027d | 810 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
811 | goto no_delegation_unlock; |
812 | ||
813 | if (delegation == NULL) | |
814 | delegation = &deleg_cur->stateid; | |
815 | else if (memcmp(deleg_cur->stateid.data, delegation->data, NFS4_STATEID_SIZE) != 0) | |
816 | goto no_delegation_unlock; | |
817 | ||
b7391f44 | 818 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 819 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
820 | ret = 1; |
821 | no_delegation_unlock: | |
822 | spin_unlock(&deleg_cur->lock); | |
823 | no_delegation: | |
824 | rcu_read_unlock(); | |
825 | ||
826 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 827 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
828 | ret = 1; |
829 | } | |
830 | ||
831 | return ret; | |
832 | } | |
833 | ||
834 | ||
dc0b027d | 835 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
836 | { |
837 | struct nfs_delegation *delegation; | |
838 | ||
839 | rcu_read_lock(); | |
840 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 841 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
842 | rcu_read_unlock(); |
843 | return; | |
844 | } | |
845 | rcu_read_unlock(); | |
846 | nfs_inode_return_delegation(inode); | |
847 | } | |
848 | ||
6ee41268 | 849 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
850 | { |
851 | struct nfs4_state *state = opendata->state; | |
852 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
853 | struct nfs_delegation *delegation; | |
dc0b027d TM |
854 | int open_mode = opendata->o_arg.open_flags & O_EXCL; |
855 | fmode_t fmode = opendata->o_arg.fmode; | |
aac00a8d TM |
856 | nfs4_stateid stateid; |
857 | int ret = -EAGAIN; | |
858 | ||
aac00a8d | 859 | for (;;) { |
dc0b027d | 860 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 861 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
862 | if (can_open_cached(state, fmode, open_mode)) { |
863 | update_open_stateflags(state, fmode); | |
6ee41268 | 864 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
865 | goto out_return_state; |
866 | } | |
867 | spin_unlock(&state->owner->so_lock); | |
868 | } | |
34310430 TM |
869 | rcu_read_lock(); |
870 | delegation = rcu_dereference(nfsi->delegation); | |
871 | if (delegation == NULL || | |
dc0b027d | 872 | !can_open_delegated(delegation, fmode)) { |
34310430 | 873 | rcu_read_unlock(); |
aac00a8d | 874 | break; |
34310430 | 875 | } |
aac00a8d TM |
876 | /* Save the delegation */ |
877 | memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data)); | |
878 | rcu_read_unlock(); | |
af22f94a | 879 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
880 | if (ret != 0) |
881 | goto out; | |
882 | ret = -EAGAIN; | |
34310430 TM |
883 | |
884 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 885 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 886 | goto out_return_state; |
aac00a8d | 887 | } |
aac00a8d TM |
888 | out: |
889 | return ERR_PTR(ret); | |
890 | out_return_state: | |
891 | atomic_inc(&state->count); | |
892 | return state; | |
893 | } | |
894 | ||
24ac23ab TM |
895 | static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) |
896 | { | |
897 | struct inode *inode; | |
898 | struct nfs4_state *state = NULL; | |
003707c7 | 899 | struct nfs_delegation *delegation; |
1b370bc2 | 900 | int ret; |
24ac23ab | 901 | |
aac00a8d | 902 | if (!data->rpc_done) { |
6ee41268 | 903 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
904 | goto out; |
905 | } | |
906 | ||
1b370bc2 | 907 | ret = -EAGAIN; |
24ac23ab | 908 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 909 | goto err; |
24ac23ab | 910 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 911 | ret = PTR_ERR(inode); |
03f28e3a | 912 | if (IS_ERR(inode)) |
1b370bc2 TM |
913 | goto err; |
914 | ret = -ENOMEM; | |
24ac23ab TM |
915 | state = nfs4_get_open_state(inode, data->owner); |
916 | if (state == NULL) | |
1b370bc2 | 917 | goto err_put_inode; |
549d6ed5 | 918 | if (data->o_res.delegation_type != 0) { |
549d6ed5 TM |
919 | int delegation_flags = 0; |
920 | ||
003707c7 TM |
921 | rcu_read_lock(); |
922 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
923 | if (delegation) | |
924 | delegation_flags = delegation->flags; | |
925 | rcu_read_unlock(); | |
15c831bf | 926 | if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) |
549d6ed5 TM |
927 | nfs_inode_set_delegation(state->inode, |
928 | data->owner->so_cred, | |
929 | &data->o_res); | |
930 | else | |
931 | nfs_inode_reclaim_delegation(state->inode, | |
932 | data->owner->so_cred, | |
933 | &data->o_res); | |
934 | } | |
34310430 TM |
935 | |
936 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
dc0b027d | 937 | data->o_arg.fmode); |
24ac23ab | 938 | iput(inode); |
aac00a8d | 939 | out: |
24ac23ab | 940 | return state; |
1b370bc2 TM |
941 | err_put_inode: |
942 | iput(inode); | |
943 | err: | |
944 | return ERR_PTR(ret); | |
24ac23ab TM |
945 | } |
946 | ||
864472e9 TM |
947 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
948 | { | |
949 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
950 | struct nfs_open_context *ctx; | |
951 | ||
952 | spin_lock(&state->inode->i_lock); | |
953 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
954 | if (ctx->state != state) | |
955 | continue; | |
956 | get_nfs_open_context(ctx); | |
957 | spin_unlock(&state->inode->i_lock); | |
958 | return ctx; | |
959 | } | |
960 | spin_unlock(&state->inode->i_lock); | |
961 | return ERR_PTR(-ENOENT); | |
962 | } | |
963 | ||
6f220ed5 TM |
964 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
965 | { | |
966 | struct nfs4_opendata *opendata; | |
967 | ||
dc0b027d | 968 | opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL); |
6f220ed5 TM |
969 | if (opendata == NULL) |
970 | return ERR_PTR(-ENOMEM); | |
971 | opendata->state = state; | |
972 | atomic_inc(&state->count); | |
973 | return opendata; | |
974 | } | |
975 | ||
dc0b027d | 976 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 977 | { |
2ced46c2 | 978 | struct nfs4_state *newstate; |
864472e9 TM |
979 | int ret; |
980 | ||
dc0b027d TM |
981 | opendata->o_arg.open_flags = 0; |
982 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
983 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
984 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
985 | nfs4_init_opendata_res(opendata); | |
864472e9 TM |
986 | ret = _nfs4_proc_open(opendata); |
987 | if (ret != 0) | |
988 | return ret; | |
2ced46c2 | 989 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
990 | if (IS_ERR(newstate)) |
991 | return PTR_ERR(newstate); | |
dc0b027d | 992 | nfs4_close_state(&opendata->path, newstate, fmode); |
2ced46c2 | 993 | *res = newstate; |
864472e9 TM |
994 | return 0; |
995 | } | |
996 | ||
997 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
998 | { | |
864472e9 | 999 | struct nfs4_state *newstate; |
864472e9 TM |
1000 | int ret; |
1001 | ||
1002 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1003 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1004 | smp_rmb(); |
1005 | if (state->n_rdwr != 0) { | |
2ced46c2 | 1006 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1007 | if (ret != 0) |
1008 | return ret; | |
2ced46c2 TM |
1009 | if (newstate != state) |
1010 | return -ESTALE; | |
864472e9 TM |
1011 | } |
1012 | if (state->n_wronly != 0) { | |
2ced46c2 | 1013 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1014 | if (ret != 0) |
1015 | return ret; | |
2ced46c2 TM |
1016 | if (newstate != state) |
1017 | return -ESTALE; | |
864472e9 TM |
1018 | } |
1019 | if (state->n_rdonly != 0) { | |
2ced46c2 | 1020 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1021 | if (ret != 0) |
1022 | return ret; | |
2ced46c2 TM |
1023 | if (newstate != state) |
1024 | return -ESTALE; | |
864472e9 | 1025 | } |
1ac7e2fd TM |
1026 | /* |
1027 | * We may have performed cached opens for all three recoveries. | |
1028 | * Check if we need to update the current stateid. | |
1029 | */ | |
1030 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
1031 | memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) { | |
8bda4e4c | 1032 | write_seqlock(&state->seqlock); |
1ac7e2fd TM |
1033 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
1034 | memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)); | |
8bda4e4c | 1035 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1036 | } |
864472e9 TM |
1037 | return 0; |
1038 | } | |
1039 | ||
1da177e4 LT |
1040 | /* |
1041 | * OPEN_RECLAIM: | |
1042 | * reclaim state on the server after a reboot. | |
1da177e4 | 1043 | */ |
539cd03a | 1044 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1045 | { |
1ac7e2fd | 1046 | struct nfs_delegation *delegation; |
864472e9 | 1047 | struct nfs4_opendata *opendata; |
dc0b027d | 1048 | fmode_t delegation_type = 0; |
1da177e4 LT |
1049 | int status; |
1050 | ||
6f220ed5 TM |
1051 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1052 | if (IS_ERR(opendata)) | |
1053 | return PTR_ERR(opendata); | |
864472e9 TM |
1054 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1055 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1056 | rcu_read_lock(); |
1057 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1058 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1059 | delegation_type = delegation->type; |
1ac7e2fd | 1060 | rcu_read_unlock(); |
864472e9 TM |
1061 | opendata->o_arg.u.delegation_type = delegation_type; |
1062 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1063 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1064 | return status; |
1065 | } | |
1066 | ||
539cd03a | 1067 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1068 | { |
1069 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1070 | struct nfs4_exception exception = { }; | |
1071 | int err; | |
1072 | do { | |
539cd03a | 1073 | err = _nfs4_do_open_reclaim(ctx, state); |
202b50dc TM |
1074 | if (err != -NFS4ERR_DELAY) |
1075 | break; | |
1076 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1077 | } while (exception.retry); |
1078 | return err; | |
1079 | } | |
1080 | ||
864472e9 TM |
1081 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1082 | { | |
1083 | struct nfs_open_context *ctx; | |
1084 | int ret; | |
1085 | ||
1086 | ctx = nfs4_state_find_open_context(state); | |
1087 | if (IS_ERR(ctx)) | |
1088 | return PTR_ERR(ctx); | |
539cd03a | 1089 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1090 | put_nfs_open_context(ctx); |
1091 | return ret; | |
1092 | } | |
1093 | ||
13437e12 | 1094 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1095 | { |
e56e0b78 | 1096 | struct nfs4_opendata *opendata; |
864472e9 | 1097 | int ret; |
1da177e4 | 1098 | |
6f220ed5 TM |
1099 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1100 | if (IS_ERR(opendata)) | |
1101 | return PTR_ERR(opendata); | |
e56e0b78 | 1102 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
13437e12 | 1103 | memcpy(opendata->o_arg.u.delegation.data, stateid->data, |
e56e0b78 | 1104 | sizeof(opendata->o_arg.u.delegation.data)); |
864472e9 | 1105 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1106 | nfs4_opendata_put(opendata); |
864472e9 | 1107 | return ret; |
1da177e4 LT |
1108 | } |
1109 | ||
13437e12 | 1110 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1111 | { |
1112 | struct nfs4_exception exception = { }; | |
539cd03a | 1113 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1114 | int err; |
1115 | do { | |
13437e12 | 1116 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1117 | switch (err) { |
1118 | case 0: | |
1119 | return err; | |
1120 | case -NFS4ERR_STALE_CLIENTID: | |
1121 | case -NFS4ERR_STALE_STATEID: | |
1122 | case -NFS4ERR_EXPIRED: | |
1123 | /* Don't recall a delegation if it was lost */ | |
7539bbab | 1124 | nfs4_schedule_state_recovery(server->nfs_client); |
1da177e4 LT |
1125 | return err; |
1126 | } | |
1127 | err = nfs4_handle_exception(server, err, &exception); | |
1128 | } while (exception.retry); | |
1129 | return err; | |
1130 | } | |
1131 | ||
cdd4e68b TM |
1132 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1133 | { | |
1134 | struct nfs4_opendata *data = calldata; | |
1135 | ||
1136 | data->rpc_status = task->tk_status; | |
1137 | if (RPC_ASSASSINATED(task)) | |
1138 | return; | |
26e976a8 | 1139 | if (data->rpc_status == 0) { |
cdd4e68b TM |
1140 | memcpy(data->o_res.stateid.data, data->c_res.stateid.data, |
1141 | sizeof(data->o_res.stateid.data)); | |
bb22629e | 1142 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1143 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1144 | data->rpc_done = 1; |
26e976a8 | 1145 | } |
cdd4e68b TM |
1146 | } |
1147 | ||
1148 | static void nfs4_open_confirm_release(void *calldata) | |
1149 | { | |
1150 | struct nfs4_opendata *data = calldata; | |
1151 | struct nfs4_state *state = NULL; | |
1152 | ||
1153 | /* If this request hasn't been cancelled, do nothing */ | |
1154 | if (data->cancelled == 0) | |
1155 | goto out_free; | |
1156 | /* In case of error, no cleanup! */ | |
3e309914 | 1157 | if (!data->rpc_done) |
cdd4e68b | 1158 | goto out_free; |
cdd4e68b | 1159 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1160 | if (!IS_ERR(state)) |
dc0b027d | 1161 | nfs4_close_state(&data->path, state, data->o_arg.fmode); |
cdd4e68b | 1162 | out_free: |
c6d00e63 | 1163 | nfs4_opendata_put(data); |
cdd4e68b TM |
1164 | } |
1165 | ||
1166 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1167 | .rpc_call_done = nfs4_open_confirm_done, |
1168 | .rpc_release = nfs4_open_confirm_release, | |
1169 | }; | |
1170 | ||
1171 | /* | |
1172 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1173 | */ | |
1174 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1175 | { | |
1176 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1177 | struct rpc_task *task; | |
5138fde0 TM |
1178 | struct rpc_message msg = { |
1179 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1180 | .rpc_argp = &data->c_arg, | |
1181 | .rpc_resp = &data->c_res, | |
1182 | .rpc_cred = data->owner->so_cred, | |
1183 | }; | |
c970aa85 TM |
1184 | struct rpc_task_setup task_setup_data = { |
1185 | .rpc_client = server->client, | |
5138fde0 | 1186 | .rpc_message = &msg, |
c970aa85 TM |
1187 | .callback_ops = &nfs4_open_confirm_ops, |
1188 | .callback_data = data, | |
101070ca | 1189 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1190 | .flags = RPC_TASK_ASYNC, |
1191 | }; | |
1da177e4 LT |
1192 | int status; |
1193 | ||
c6d00e63 | 1194 | kref_get(&data->kref); |
3e309914 TM |
1195 | data->rpc_done = 0; |
1196 | data->rpc_status = 0; | |
5138fde0 | 1197 | data->timestamp = jiffies; |
c970aa85 | 1198 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1199 | if (IS_ERR(task)) |
cdd4e68b | 1200 | return PTR_ERR(task); |
cdd4e68b TM |
1201 | status = nfs4_wait_for_completion_rpc_task(task); |
1202 | if (status != 0) { | |
1203 | data->cancelled = 1; | |
1204 | smp_wmb(); | |
1205 | } else | |
1206 | status = data->rpc_status; | |
e6b3c4db | 1207 | rpc_put_task(task); |
1da177e4 LT |
1208 | return status; |
1209 | } | |
1210 | ||
24ac23ab | 1211 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1212 | { |
24ac23ab TM |
1213 | struct nfs4_opendata *data = calldata; |
1214 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1215 | |
24ac23ab TM |
1216 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
1217 | return; | |
aac00a8d TM |
1218 | /* |
1219 | * Check if we still need to send an OPEN call, or if we can use | |
1220 | * a delegation instead. | |
1221 | */ | |
1222 | if (data->state != NULL) { | |
1223 | struct nfs_delegation *delegation; | |
1224 | ||
dc0b027d | 1225 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1226 | goto out_no_action; |
aac00a8d TM |
1227 | rcu_read_lock(); |
1228 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
1229 | if (delegation != NULL && | |
15c831bf | 1230 | test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) == 0) { |
aac00a8d | 1231 | rcu_read_unlock(); |
6ee41268 | 1232 | goto out_no_action; |
aac00a8d TM |
1233 | } |
1234 | rcu_read_unlock(); | |
1235 | } | |
24ac23ab | 1236 | /* Update sequence id. */ |
9f958ab8 | 1237 | data->o_arg.id = sp->so_owner_id.id; |
24ac23ab | 1238 | data->o_arg.clientid = sp->so_client->cl_clientid; |
6f220ed5 | 1239 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1240 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
6f220ed5 TM |
1241 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1242 | } | |
26e976a8 | 1243 | data->timestamp = jiffies; |
5138fde0 | 1244 | rpc_call_start(task); |
6ee41268 TM |
1245 | return; |
1246 | out_no_action: | |
1247 | task->tk_action = NULL; | |
1248 | ||
24ac23ab | 1249 | } |
1da177e4 | 1250 | |
24ac23ab TM |
1251 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1252 | { | |
1253 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1254 | |
24ac23ab TM |
1255 | data->rpc_status = task->tk_status; |
1256 | if (RPC_ASSASSINATED(task)) | |
1257 | return; | |
1258 | if (task->tk_status == 0) { | |
1259 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1260 | case S_IFREG: |
1261 | break; | |
1262 | case S_IFLNK: | |
24ac23ab | 1263 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1264 | break; |
1265 | case S_IFDIR: | |
24ac23ab | 1266 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1267 | break; |
1268 | default: | |
24ac23ab | 1269 | data->rpc_status = -ENOTDIR; |
6f926b5b | 1270 | } |
26e976a8 | 1271 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1272 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1273 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1274 | } |
3e309914 | 1275 | data->rpc_done = 1; |
24ac23ab | 1276 | } |
6f926b5b | 1277 | |
24ac23ab TM |
1278 | static void nfs4_open_release(void *calldata) |
1279 | { | |
1280 | struct nfs4_opendata *data = calldata; | |
1281 | struct nfs4_state *state = NULL; | |
1282 | ||
1283 | /* If this request hasn't been cancelled, do nothing */ | |
1284 | if (data->cancelled == 0) | |
1285 | goto out_free; | |
1286 | /* In case of error, no cleanup! */ | |
3e309914 | 1287 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1288 | goto out_free; |
1289 | /* In case we need an open_confirm, no cleanup! */ | |
1290 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1291 | goto out_free; | |
24ac23ab | 1292 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1293 | if (!IS_ERR(state)) |
dc0b027d | 1294 | nfs4_close_state(&data->path, state, data->o_arg.fmode); |
24ac23ab | 1295 | out_free: |
c6d00e63 | 1296 | nfs4_opendata_put(data); |
24ac23ab TM |
1297 | } |
1298 | ||
1299 | static const struct rpc_call_ops nfs4_open_ops = { | |
1300 | .rpc_call_prepare = nfs4_open_prepare, | |
1301 | .rpc_call_done = nfs4_open_done, | |
1302 | .rpc_release = nfs4_open_release, | |
1303 | }; | |
1304 | ||
1305 | /* | |
1306 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1307 | */ | |
1308 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1309 | { | |
1310 | struct inode *dir = data->dir->d_inode; | |
1311 | struct nfs_server *server = NFS_SERVER(dir); | |
1312 | struct nfs_openargs *o_arg = &data->o_arg; | |
1313 | struct nfs_openres *o_res = &data->o_res; | |
1314 | struct rpc_task *task; | |
5138fde0 TM |
1315 | struct rpc_message msg = { |
1316 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1317 | .rpc_argp = o_arg, | |
1318 | .rpc_resp = o_res, | |
1319 | .rpc_cred = data->owner->so_cred, | |
1320 | }; | |
c970aa85 TM |
1321 | struct rpc_task_setup task_setup_data = { |
1322 | .rpc_client = server->client, | |
5138fde0 | 1323 | .rpc_message = &msg, |
c970aa85 TM |
1324 | .callback_ops = &nfs4_open_ops, |
1325 | .callback_data = data, | |
101070ca | 1326 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1327 | .flags = RPC_TASK_ASYNC, |
1328 | }; | |
24ac23ab TM |
1329 | int status; |
1330 | ||
c6d00e63 | 1331 | kref_get(&data->kref); |
3e309914 TM |
1332 | data->rpc_done = 0; |
1333 | data->rpc_status = 0; | |
2ced46c2 | 1334 | data->cancelled = 0; |
c970aa85 | 1335 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1336 | if (IS_ERR(task)) |
24ac23ab | 1337 | return PTR_ERR(task); |
24ac23ab TM |
1338 | status = nfs4_wait_for_completion_rpc_task(task); |
1339 | if (status != 0) { | |
1340 | data->cancelled = 1; | |
1341 | smp_wmb(); | |
1342 | } else | |
1343 | status = data->rpc_status; | |
e6b3c4db | 1344 | rpc_put_task(task); |
3e309914 | 1345 | if (status != 0 || !data->rpc_done) |
24ac23ab TM |
1346 | return status; |
1347 | ||
9936781d TM |
1348 | if (o_res->fh.size == 0) |
1349 | _nfs4_proc_lookup(dir, o_arg->name, &o_res->fh, o_res->f_attr); | |
1350 | ||
56ae19f3 TM |
1351 | if (o_arg->open_flags & O_CREAT) { |
1352 | update_changeattr(dir, &o_res->cinfo); | |
1353 | nfs_post_op_update_inode(dir, o_res->dir_attr); | |
1354 | } else | |
1355 | nfs_refresh_inode(dir, o_res->dir_attr); | |
1da177e4 | 1356 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1357 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1358 | if (status != 0) |
24ac23ab | 1359 | return status; |
1da177e4 LT |
1360 | } |
1361 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1362 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1363 | return 0; |
1da177e4 LT |
1364 | } |
1365 | ||
10afec90 | 1366 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
58d9714a | 1367 | { |
7539bbab | 1368 | struct nfs_client *clp = server->nfs_client; |
6b30954e | 1369 | int ret; |
58d9714a | 1370 | |
6b30954e | 1371 | for (;;) { |
65de872e | 1372 | ret = nfs4_wait_clnt_recover(clp); |
6b30954e TM |
1373 | if (ret != 0) |
1374 | return ret; | |
e598d843 TM |
1375 | if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) && |
1376 | !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state)) | |
6b30954e | 1377 | break; |
58d9714a | 1378 | nfs4_schedule_state_recovery(clp); |
6b30954e TM |
1379 | } |
1380 | return 0; | |
58d9714a TM |
1381 | } |
1382 | ||
1da177e4 LT |
1383 | /* |
1384 | * OPEN_EXPIRED: | |
1385 | * reclaim state on the server after a network partition. | |
1386 | * Assumes caller holds the appropriate lock | |
1387 | */ | |
539cd03a | 1388 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1389 | { |
e56e0b78 | 1390 | struct nfs4_opendata *opendata; |
864472e9 | 1391 | int ret; |
1da177e4 | 1392 | |
6f220ed5 TM |
1393 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1394 | if (IS_ERR(opendata)) | |
1395 | return PTR_ERR(opendata); | |
864472e9 | 1396 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1397 | if (ret == -ESTALE) |
539cd03a | 1398 | d_drop(ctx->path.dentry); |
c6d00e63 | 1399 | nfs4_opendata_put(opendata); |
864472e9 | 1400 | return ret; |
1da177e4 LT |
1401 | } |
1402 | ||
539cd03a | 1403 | static inline int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1404 | { |
539cd03a | 1405 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1406 | struct nfs4_exception exception = { }; |
1407 | int err; | |
1408 | ||
1409 | do { | |
539cd03a | 1410 | err = _nfs4_open_expired(ctx, state); |
027b6ca0 TM |
1411 | if (err != -NFS4ERR_DELAY) |
1412 | break; | |
1413 | nfs4_handle_exception(server, err, &exception); | |
202b50dc TM |
1414 | } while (exception.retry); |
1415 | return err; | |
1416 | } | |
1417 | ||
1da177e4 LT |
1418 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1419 | { | |
1da177e4 | 1420 | struct nfs_open_context *ctx; |
864472e9 | 1421 | int ret; |
1da177e4 | 1422 | |
864472e9 TM |
1423 | ctx = nfs4_state_find_open_context(state); |
1424 | if (IS_ERR(ctx)) | |
1425 | return PTR_ERR(ctx); | |
539cd03a | 1426 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1427 | put_nfs_open_context(ctx); |
1428 | return ret; | |
1da177e4 LT |
1429 | } |
1430 | ||
aa53ed54 JL |
1431 | /* |
1432 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1433 | * fields corresponding to attributes that were used to store the verifier. | |
1434 | * Make sure we clobber those fields in the later setattr call | |
1435 | */ | |
1436 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1437 | { | |
1438 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1439 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1440 | sattr->ia_valid |= ATTR_ATIME; | |
1441 | ||
1442 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1443 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1444 | sattr->ia_valid |= ATTR_MTIME; | |
1445 | } | |
1446 | ||
1da177e4 | 1447 | /* |
24ac23ab | 1448 | * Returns a referenced nfs4_state |
1da177e4 | 1449 | */ |
dc0b027d | 1450 | 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 |
1451 | { |
1452 | struct nfs4_state_owner *sp; | |
1453 | struct nfs4_state *state = NULL; | |
1454 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1455 | struct nfs4_opendata *opendata; |
aac00a8d | 1456 | int status; |
1da177e4 LT |
1457 | |
1458 | /* Protect against reboot recovery conflicts */ | |
1da177e4 LT |
1459 | status = -ENOMEM; |
1460 | if (!(sp = nfs4_get_state_owner(server, cred))) { | |
1461 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); | |
1462 | goto out_err; | |
1463 | } | |
58d9714a TM |
1464 | status = nfs4_recover_expired_lease(server); |
1465 | if (status != 0) | |
b4454fe1 | 1466 | goto err_put_state_owner; |
aac00a8d | 1467 | if (path->dentry->d_inode != NULL) |
dc0b027d | 1468 | nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode); |
58d9714a | 1469 | status = -ENOMEM; |
dc0b027d | 1470 | opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr); |
e56e0b78 | 1471 | if (opendata == NULL) |
95d35cb4 | 1472 | goto err_put_state_owner; |
1da177e4 | 1473 | |
aac00a8d TM |
1474 | if (path->dentry->d_inode != NULL) |
1475 | opendata->state = nfs4_get_open_state(path->dentry->d_inode, sp); | |
1476 | ||
24ac23ab | 1477 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1478 | if (status != 0) |
c6d00e63 | 1479 | goto err_opendata_put; |
1da177e4 | 1480 | |
aa53ed54 JL |
1481 | if (opendata->o_arg.open_flags & O_EXCL) |
1482 | nfs4_exclusive_attrset(opendata, sattr); | |
1483 | ||
24ac23ab | 1484 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1485 | status = PTR_ERR(state); |
1486 | if (IS_ERR(state)) | |
c6d00e63 | 1487 | goto err_opendata_put; |
c6d00e63 | 1488 | nfs4_opendata_put(opendata); |
1da177e4 | 1489 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1490 | *res = state; |
1491 | return 0; | |
c6d00e63 TM |
1492 | err_opendata_put: |
1493 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
1494 | err_put_state_owner: |
1495 | nfs4_put_state_owner(sp); | |
1da177e4 | 1496 | out_err: |
1da177e4 LT |
1497 | *res = NULL; |
1498 | return status; | |
1499 | } | |
1500 | ||
1501 | ||
dc0b027d | 1502 | 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 |
1503 | { |
1504 | struct nfs4_exception exception = { }; | |
1505 | struct nfs4_state *res; | |
1506 | int status; | |
1507 | ||
1508 | do { | |
dc0b027d | 1509 | status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res); |
1da177e4 LT |
1510 | if (status == 0) |
1511 | break; | |
1512 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1513 | * book-keeping w.r.t. state-changing operations | |
1514 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1515 | * It is actually a sign of a bug on the client or on the server. | |
1516 | * | |
1517 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1518 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1519 | * have unhashed the old state_owner for us, and that we can |
1520 | * therefore safely retry using a new one. We should still warn | |
1521 | * the user though... | |
1522 | */ | |
1523 | if (status == -NFS4ERR_BAD_SEQID) { | |
6f43ddcc TM |
1524 | printk(KERN_WARNING "NFS: v4 server %s " |
1525 | " returned a bad sequence-id error!\n", | |
1526 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1527 | exception.retry = 1; |
1528 | continue; | |
1529 | } | |
550f5747 TM |
1530 | /* |
1531 | * BAD_STATEID on OPEN means that the server cancelled our | |
1532 | * state before it received the OPEN_CONFIRM. | |
1533 | * Recover by retrying the request as per the discussion | |
1534 | * on Page 181 of RFC3530. | |
1535 | */ | |
1536 | if (status == -NFS4ERR_BAD_STATEID) { | |
1537 | exception.retry = 1; | |
1538 | continue; | |
1539 | } | |
aac00a8d TM |
1540 | if (status == -EAGAIN) { |
1541 | /* We must have found a delegation */ | |
1542 | exception.retry = 1; | |
1543 | continue; | |
1544 | } | |
1da177e4 LT |
1545 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1546 | status, &exception)); | |
1547 | } while (exception.retry); | |
1548 | return res; | |
1549 | } | |
1550 | ||
659bfcd6 TM |
1551 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1552 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1553 | struct nfs4_state *state) | |
1da177e4 | 1554 | { |
3e4f6290 | 1555 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1556 | struct nfs_setattrargs arg = { |
3e4f6290 | 1557 | .fh = NFS_FH(inode), |
1da177e4 LT |
1558 | .iap = sattr, |
1559 | .server = server, | |
1560 | .bitmask = server->attr_bitmask, | |
1561 | }; | |
1562 | struct nfs_setattrres res = { | |
1563 | .fattr = fattr, | |
1564 | .server = server, | |
1565 | }; | |
1566 | struct rpc_message msg = { | |
659bfcd6 TM |
1567 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
1568 | .rpc_argp = &arg, | |
1569 | .rpc_resp = &res, | |
1570 | .rpc_cred = cred, | |
1da177e4 | 1571 | }; |
26e976a8 | 1572 | unsigned long timestamp = jiffies; |
65e4308d | 1573 | int status; |
1da177e4 | 1574 | |
0e574af1 | 1575 | nfs_fattr_init(fattr); |
1da177e4 | 1576 | |
3e4f6290 TM |
1577 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) { |
1578 | /* Use that stateid */ | |
1579 | } else if (state != NULL) { | |
08e9eac4 TM |
1580 | nfs4_copy_stateid(&arg.stateid, state, current->files); |
1581 | } else | |
1da177e4 LT |
1582 | memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid)); |
1583 | ||
cccef3b9 | 1584 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
26e976a8 TM |
1585 | if (status == 0 && state != NULL) |
1586 | renew_lease(server, timestamp); | |
65e4308d | 1587 | return status; |
1da177e4 LT |
1588 | } |
1589 | ||
659bfcd6 TM |
1590 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1591 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1592 | struct nfs4_state *state) | |
1da177e4 | 1593 | { |
3e4f6290 | 1594 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
1595 | struct nfs4_exception exception = { }; |
1596 | int err; | |
1597 | do { | |
1598 | err = nfs4_handle_exception(server, | |
659bfcd6 | 1599 | _nfs4_do_setattr(inode, cred, fattr, sattr, state), |
1da177e4 LT |
1600 | &exception); |
1601 | } while (exception.retry); | |
1602 | return err; | |
1603 | } | |
1604 | ||
1605 | struct nfs4_closedata { | |
4a35bd41 | 1606 | struct path path; |
1da177e4 LT |
1607 | struct inode *inode; |
1608 | struct nfs4_state *state; | |
1609 | struct nfs_closeargs arg; | |
1610 | struct nfs_closeres res; | |
516a6af6 | 1611 | struct nfs_fattr fattr; |
26e976a8 | 1612 | unsigned long timestamp; |
1da177e4 LT |
1613 | }; |
1614 | ||
963d8fe5 | 1615 | static void nfs4_free_closedata(void *data) |
9512135d | 1616 | { |
963d8fe5 TM |
1617 | struct nfs4_closedata *calldata = data; |
1618 | struct nfs4_state_owner *sp = calldata->state->owner; | |
9512135d TM |
1619 | |
1620 | nfs4_put_open_state(calldata->state); | |
1621 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 1622 | nfs4_put_state_owner(sp); |
31f31db1 | 1623 | path_put(&calldata->path); |
9512135d TM |
1624 | kfree(calldata); |
1625 | } | |
1626 | ||
963d8fe5 | 1627 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 1628 | { |
963d8fe5 | 1629 | struct nfs4_closedata *calldata = data; |
1da177e4 | 1630 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
1631 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
1632 | ||
4ce70ada TM |
1633 | if (RPC_ASSASSINATED(task)) |
1634 | return; | |
1da177e4 LT |
1635 | /* hmm. we are done with the inode, and in the process of freeing |
1636 | * the state_owner. we keep this around to process errors | |
1637 | */ | |
1da177e4 LT |
1638 | switch (task->tk_status) { |
1639 | case 0: | |
45328c35 | 1640 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 1641 | renew_lease(server, calldata->timestamp); |
1da177e4 LT |
1642 | break; |
1643 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
1644 | case -NFS4ERR_OLD_STATEID: |
1645 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 1646 | case -NFS4ERR_EXPIRED: |
dc0b027d | 1647 | if (calldata->arg.fmode == 0) |
9e33bed5 | 1648 | break; |
1da177e4 | 1649 | default: |
9e33bed5 | 1650 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) { |
1da177e4 LT |
1651 | rpc_restart_call(task); |
1652 | return; | |
1653 | } | |
1654 | } | |
516a6af6 | 1655 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
1da177e4 LT |
1656 | } |
1657 | ||
4ce70ada | 1658 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 1659 | { |
4ce70ada | 1660 | struct nfs4_closedata *calldata = data; |
9512135d | 1661 | struct nfs4_state *state = calldata->state; |
003707c7 | 1662 | int clear_rd, clear_wr, clear_rdwr; |
9512135d | 1663 | |
963d8fe5 | 1664 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 1665 | return; |
003707c7 | 1666 | |
003707c7 | 1667 | clear_rd = clear_wr = clear_rdwr = 0; |
4cecb76f | 1668 | spin_lock(&state->owner->so_lock); |
003707c7 | 1669 | /* Calculate the change in open mode */ |
e7616923 | 1670 | if (state->n_rdwr == 0) { |
003707c7 | 1671 | if (state->n_rdonly == 0) { |
003707c7 TM |
1672 | clear_rd |= test_and_clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
1673 | clear_rdwr |= test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1674 | } | |
1675 | if (state->n_wronly == 0) { | |
003707c7 TM |
1676 | clear_wr |= test_and_clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
1677 | clear_rdwr |= test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1678 | } | |
e7616923 | 1679 | } |
4cecb76f | 1680 | spin_unlock(&state->owner->so_lock); |
003707c7 | 1681 | if (!clear_rd && !clear_wr && !clear_rdwr) { |
963d8fe5 TM |
1682 | /* Note: exit _without_ calling nfs4_close_done */ |
1683 | task->tk_action = NULL; | |
9512135d TM |
1684 | return; |
1685 | } | |
516a6af6 | 1686 | nfs_fattr_init(calldata->res.fattr); |
45328c35 | 1687 | if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) { |
5138fde0 | 1688 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
dc0b027d | 1689 | calldata->arg.fmode = FMODE_READ; |
45328c35 | 1690 | } else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) { |
5138fde0 | 1691 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
dc0b027d | 1692 | calldata->arg.fmode = FMODE_WRITE; |
45328c35 | 1693 | } |
26e976a8 | 1694 | calldata->timestamp = jiffies; |
5138fde0 | 1695 | rpc_call_start(task); |
1da177e4 LT |
1696 | } |
1697 | ||
963d8fe5 | 1698 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 1699 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
1700 | .rpc_call_done = nfs4_close_done, |
1701 | .rpc_release = nfs4_free_closedata, | |
1702 | }; | |
1703 | ||
1da177e4 LT |
1704 | /* |
1705 | * It is possible for data to be read/written from a mem-mapped file | |
1706 | * after the sys_close call (which hits the vfs layer as a flush). | |
1707 | * This means that we can't safely call nfsv4 close on a file until | |
1708 | * the inode is cleared. This in turn means that we are not good | |
1709 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
1710 | * share state even when we are done with one of the three share | |
1711 | * stateid's in the inode. | |
1712 | * | |
1713 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
1714 | */ | |
a49c3c77 | 1715 | int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait) |
1da177e4 | 1716 | { |
4a35bd41 | 1717 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 1718 | struct nfs4_closedata *calldata; |
b39e625b TM |
1719 | struct nfs4_state_owner *sp = state->owner; |
1720 | struct rpc_task *task; | |
5138fde0 TM |
1721 | struct rpc_message msg = { |
1722 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
1723 | .rpc_cred = state->owner->so_cred, | |
1724 | }; | |
c970aa85 TM |
1725 | struct rpc_task_setup task_setup_data = { |
1726 | .rpc_client = server->client, | |
5138fde0 | 1727 | .rpc_message = &msg, |
c970aa85 | 1728 | .callback_ops = &nfs4_close_ops, |
101070ca | 1729 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1730 | .flags = RPC_TASK_ASYNC, |
1731 | }; | |
9512135d | 1732 | int status = -ENOMEM; |
1da177e4 | 1733 | |
9512135d | 1734 | calldata = kmalloc(sizeof(*calldata), GFP_KERNEL); |
1da177e4 | 1735 | if (calldata == NULL) |
9512135d | 1736 | goto out; |
4a35bd41 | 1737 | calldata->inode = state->inode; |
1da177e4 | 1738 | calldata->state = state; |
4a35bd41 | 1739 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 1740 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 1741 | /* Serialization for the sequence id */ |
cee54fc9 | 1742 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid); |
9512135d TM |
1743 | if (calldata->arg.seqid == NULL) |
1744 | goto out_free_calldata; | |
dc0b027d | 1745 | calldata->arg.fmode = 0; |
a65318bf | 1746 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 1747 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 1748 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 1749 | calldata->res.server = server; |
5f7dbd5c | 1750 | calldata->res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE; |
4a35bd41 TM |
1751 | calldata->path.mnt = mntget(path->mnt); |
1752 | calldata->path.dentry = dget(path->dentry); | |
9512135d | 1753 | |
5138fde0 TM |
1754 | msg.rpc_argp = &calldata->arg, |
1755 | msg.rpc_resp = &calldata->res, | |
c970aa85 TM |
1756 | task_setup_data.callback_data = calldata; |
1757 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
1758 | if (IS_ERR(task)) |
1759 | return PTR_ERR(task); | |
a49c3c77 TM |
1760 | status = 0; |
1761 | if (wait) | |
1762 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 1763 | rpc_put_task(task); |
a49c3c77 | 1764 | return status; |
9512135d TM |
1765 | out_free_calldata: |
1766 | kfree(calldata); | |
1767 | out: | |
b39e625b TM |
1768 | nfs4_put_open_state(state); |
1769 | nfs4_put_state_owner(sp); | |
9512135d | 1770 | return status; |
1da177e4 LT |
1771 | } |
1772 | ||
dc0b027d | 1773 | static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode) |
02a913a7 TM |
1774 | { |
1775 | struct file *filp; | |
1b45c46c | 1776 | int ret; |
02a913a7 | 1777 | |
1b45c46c | 1778 | /* If the open_intent is for execute, we have an extra check to make */ |
dc0b027d | 1779 | if (fmode & FMODE_EXEC) { |
af22f94a | 1780 | ret = nfs_may_open(state->inode, |
1b45c46c TM |
1781 | state->owner->so_cred, |
1782 | nd->intent.open.flags); | |
1783 | if (ret < 0) | |
1784 | goto out_close; | |
1785 | } | |
4a35bd41 | 1786 | filp = lookup_instantiate_filp(nd, path->dentry, NULL); |
02a913a7 TM |
1787 | if (!IS_ERR(filp)) { |
1788 | struct nfs_open_context *ctx; | |
cd3758e3 | 1789 | ctx = nfs_file_open_context(filp); |
02a913a7 | 1790 | ctx->state = state; |
95cf959b TM |
1791 | return 0; |
1792 | } | |
1b45c46c TM |
1793 | ret = PTR_ERR(filp); |
1794 | out_close: | |
dc0b027d | 1795 | nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE)); |
1b45c46c | 1796 | return ret; |
02a913a7 TM |
1797 | } |
1798 | ||
1799 | struct dentry * | |
1da177e4 LT |
1800 | nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd) |
1801 | { | |
ad389da7 | 1802 | struct path path = { |
4ac91378 | 1803 | .mnt = nd->path.mnt, |
ad389da7 TM |
1804 | .dentry = dentry, |
1805 | }; | |
4ac91378 | 1806 | struct dentry *parent; |
1da177e4 LT |
1807 | struct iattr attr; |
1808 | struct rpc_cred *cred; | |
1809 | struct nfs4_state *state; | |
02a913a7 | 1810 | struct dentry *res; |
dc0b027d | 1811 | fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC); |
1da177e4 LT |
1812 | |
1813 | if (nd->flags & LOOKUP_CREATE) { | |
1814 | attr.ia_mode = nd->intent.open.create_mode; | |
1815 | attr.ia_valid = ATTR_MODE; | |
1816 | if (!IS_POSIXACL(dir)) | |
ce3b0f8d | 1817 | attr.ia_mode &= ~current_umask(); |
1da177e4 LT |
1818 | } else { |
1819 | attr.ia_valid = 0; | |
1820 | BUG_ON(nd->intent.open.flags & O_CREAT); | |
1821 | } | |
1822 | ||
98a8e323 | 1823 | cred = rpc_lookup_cred(); |
1da177e4 | 1824 | if (IS_ERR(cred)) |
02a913a7 | 1825 | return (struct dentry *)cred; |
565277f6 TM |
1826 | parent = dentry->d_parent; |
1827 | /* Protect against concurrent sillydeletes */ | |
1828 | nfs_block_sillyrename(parent); | |
dc0b027d | 1829 | state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred); |
1da177e4 | 1830 | put_rpccred(cred); |
02a913a7 | 1831 | if (IS_ERR(state)) { |
d75340cc | 1832 | if (PTR_ERR(state) == -ENOENT) { |
02a913a7 | 1833 | d_add(dentry, NULL); |
d75340cc TM |
1834 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
1835 | } | |
565277f6 | 1836 | nfs_unblock_sillyrename(parent); |
02a913a7 TM |
1837 | return (struct dentry *)state; |
1838 | } | |
24ac23ab | 1839 | res = d_add_unique(dentry, igrab(state->inode)); |
02a913a7 | 1840 | if (res != NULL) |
deee9369 | 1841 | path.dentry = res; |
d75340cc | 1842 | nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir)); |
565277f6 | 1843 | nfs_unblock_sillyrename(parent); |
dc0b027d | 1844 | nfs4_intent_set_file(nd, &path, state, fmode); |
02a913a7 | 1845 | return res; |
1da177e4 LT |
1846 | } |
1847 | ||
1848 | int | |
02a913a7 | 1849 | nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, struct nameidata *nd) |
1da177e4 | 1850 | { |
ad389da7 | 1851 | struct path path = { |
4ac91378 | 1852 | .mnt = nd->path.mnt, |
ad389da7 TM |
1853 | .dentry = dentry, |
1854 | }; | |
1da177e4 LT |
1855 | struct rpc_cred *cred; |
1856 | struct nfs4_state *state; | |
dc0b027d | 1857 | fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE); |
1da177e4 | 1858 | |
98a8e323 | 1859 | cred = rpc_lookup_cred(); |
1da177e4 LT |
1860 | if (IS_ERR(cred)) |
1861 | return PTR_ERR(cred); | |
dc0b027d | 1862 | state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred); |
1da177e4 | 1863 | put_rpccred(cred); |
02a913a7 TM |
1864 | if (IS_ERR(state)) { |
1865 | switch (PTR_ERR(state)) { | |
1866 | case -EPERM: | |
1867 | case -EACCES: | |
1868 | case -EDQUOT: | |
1869 | case -ENOSPC: | |
1870 | case -EROFS: | |
1871 | lookup_instantiate_filp(nd, (struct dentry *)state, NULL); | |
1872 | return 1; | |
b87c0adf CL |
1873 | default: |
1874 | goto out_drop; | |
02a913a7 | 1875 | } |
02a913a7 | 1876 | } |
24ac23ab | 1877 | if (state->inode == dentry->d_inode) { |
d75340cc | 1878 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
dc0b027d | 1879 | nfs4_intent_set_file(nd, &path, state, fmode); |
1da177e4 LT |
1880 | return 1; |
1881 | } | |
dc0b027d | 1882 | nfs4_close_sync(&path, state, fmode); |
02a913a7 TM |
1883 | out_drop: |
1884 | d_drop(dentry); | |
1da177e4 LT |
1885 | return 0; |
1886 | } | |
1887 | ||
7fe5c398 TM |
1888 | void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
1889 | { | |
1890 | if (ctx->state == NULL) | |
1891 | return; | |
1892 | if (is_sync) | |
1893 | nfs4_close_sync(&ctx->path, ctx->state, ctx->mode); | |
1894 | else | |
1895 | nfs4_close_state(&ctx->path, ctx->state, ctx->mode); | |
1896 | } | |
1da177e4 LT |
1897 | |
1898 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
1899 | { | |
43652ad5 BH |
1900 | struct nfs4_server_caps_arg args = { |
1901 | .fhandle = fhandle, | |
1902 | }; | |
1da177e4 LT |
1903 | struct nfs4_server_caps_res res = {}; |
1904 | struct rpc_message msg = { | |
1905 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 1906 | .rpc_argp = &args, |
1da177e4 LT |
1907 | .rpc_resp = &res, |
1908 | }; | |
1909 | int status; | |
1910 | ||
cccef3b9 | 1911 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
1912 | if (status == 0) { |
1913 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
1914 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) | |
1915 | server->caps |= NFS_CAP_ACLS; | |
1916 | if (res.has_links != 0) | |
1917 | server->caps |= NFS_CAP_HARDLINKS; | |
1918 | if (res.has_symlinks != 0) | |
1919 | server->caps |= NFS_CAP_SYMLINKS; | |
a65318bf TM |
1920 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
1921 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
1922 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 LT |
1923 | server->acl_bitmask = res.acl_bitmask; |
1924 | } | |
cccef3b9 | 1925 | |
1da177e4 LT |
1926 | return status; |
1927 | } | |
1928 | ||
55a97593 | 1929 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
1930 | { |
1931 | struct nfs4_exception exception = { }; | |
1932 | int err; | |
1933 | do { | |
1934 | err = nfs4_handle_exception(server, | |
1935 | _nfs4_server_capabilities(server, fhandle), | |
1936 | &exception); | |
1937 | } while (exception.retry); | |
1938 | return err; | |
1939 | } | |
1940 | ||
1941 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
1942 | struct nfs_fsinfo *info) | |
1943 | { | |
1da177e4 LT |
1944 | struct nfs4_lookup_root_arg args = { |
1945 | .bitmask = nfs4_fattr_bitmap, | |
1946 | }; | |
1947 | struct nfs4_lookup_res res = { | |
1948 | .server = server, | |
0e574af1 | 1949 | .fattr = info->fattr, |
1da177e4 LT |
1950 | .fh = fhandle, |
1951 | }; | |
1952 | struct rpc_message msg = { | |
1953 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
1954 | .rpc_argp = &args, | |
1955 | .rpc_resp = &res, | |
1956 | }; | |
0e574af1 | 1957 | nfs_fattr_init(info->fattr); |
cccef3b9 | 1958 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
1959 | } |
1960 | ||
1961 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
1962 | struct nfs_fsinfo *info) | |
1963 | { | |
1964 | struct nfs4_exception exception = { }; | |
1965 | int err; | |
1966 | do { | |
1967 | err = nfs4_handle_exception(server, | |
1968 | _nfs4_lookup_root(server, fhandle, info), | |
1969 | &exception); | |
1970 | } while (exception.retry); | |
1971 | return err; | |
1972 | } | |
1973 | ||
54ceac45 DH |
1974 | /* |
1975 | * get the file handle for the "/" directory on the server | |
1976 | */ | |
1da177e4 | 1977 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 1978 | struct nfs_fsinfo *info) |
1da177e4 | 1979 | { |
1da177e4 LT |
1980 | int status; |
1981 | ||
1da177e4 | 1982 | status = nfs4_lookup_root(server, fhandle, info); |
1da177e4 LT |
1983 | if (status == 0) |
1984 | status = nfs4_server_capabilities(server, fhandle); | |
1985 | if (status == 0) | |
1986 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 1987 | return nfs4_map_errors(status); |
1da177e4 LT |
1988 | } |
1989 | ||
6b97fd3d MN |
1990 | /* |
1991 | * Get locations and (maybe) other attributes of a referral. | |
1992 | * Note that we'll actually follow the referral later when | |
1993 | * we detect fsid mismatch in inode revalidation | |
1994 | */ | |
56659e99 | 1995 | static int nfs4_get_referral(struct inode *dir, const struct qstr *name, struct nfs_fattr *fattr, struct nfs_fh *fhandle) |
6b97fd3d MN |
1996 | { |
1997 | int status = -ENOMEM; | |
1998 | struct page *page = NULL; | |
1999 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2000 | |
2001 | page = alloc_page(GFP_KERNEL); | |
2002 | if (page == NULL) | |
2003 | goto out; | |
2004 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2005 | if (locations == NULL) | |
2006 | goto out; | |
2007 | ||
c228fd3a | 2008 | status = nfs4_proc_fs_locations(dir, name, locations, page); |
6b97fd3d MN |
2009 | if (status != 0) |
2010 | goto out; | |
2011 | /* Make sure server returned a different fsid for the referral */ | |
2012 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
3110ff80 | 2013 | dprintk("%s: server did not return a different fsid for a referral at %s\n", __func__, name->name); |
6b97fd3d MN |
2014 | status = -EIO; |
2015 | goto out; | |
2016 | } | |
2017 | ||
2018 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); | |
2019 | fattr->valid |= NFS_ATTR_FATTR_V4_REFERRAL; | |
2020 | if (!fattr->mode) | |
2021 | fattr->mode = S_IFDIR; | |
2022 | memset(fhandle, 0, sizeof(struct nfs_fh)); | |
2023 | out: | |
2024 | if (page) | |
2025 | __free_page(page); | |
2026 | if (locations) | |
2027 | kfree(locations); | |
2028 | return status; | |
2029 | } | |
2030 | ||
1da177e4 LT |
2031 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2032 | { | |
2033 | struct nfs4_getattr_arg args = { | |
2034 | .fh = fhandle, | |
2035 | .bitmask = server->attr_bitmask, | |
2036 | }; | |
2037 | struct nfs4_getattr_res res = { | |
2038 | .fattr = fattr, | |
2039 | .server = server, | |
2040 | }; | |
2041 | struct rpc_message msg = { | |
2042 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2043 | .rpc_argp = &args, | |
2044 | .rpc_resp = &res, | |
2045 | }; | |
2046 | ||
0e574af1 | 2047 | nfs_fattr_init(fattr); |
cccef3b9 | 2048 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2049 | } |
2050 | ||
2051 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2052 | { | |
2053 | struct nfs4_exception exception = { }; | |
2054 | int err; | |
2055 | do { | |
2056 | err = nfs4_handle_exception(server, | |
2057 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2058 | &exception); | |
2059 | } while (exception.retry); | |
2060 | return err; | |
2061 | } | |
2062 | ||
2063 | /* | |
2064 | * The file is not closed if it is opened due to the a request to change | |
2065 | * the size of the file. The open call will not be needed once the | |
2066 | * VFS layer lookup-intents are implemented. | |
2067 | * | |
2068 | * Close is called when the inode is destroyed. | |
2069 | * If we haven't opened the file for O_WRONLY, we | |
2070 | * need to in the size_change case to obtain a stateid. | |
2071 | * | |
2072 | * Got race? | |
2073 | * Because OPEN is always done by name in nfsv4, it is | |
2074 | * possible that we opened a different file by the same | |
2075 | * name. We can recognize this race condition, but we | |
2076 | * can't do anything about it besides returning an error. | |
2077 | * | |
2078 | * This will be fixed with VFS changes (lookup-intent). | |
2079 | */ | |
2080 | static int | |
2081 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2082 | struct iattr *sattr) | |
2083 | { | |
08e9eac4 | 2084 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2085 | struct rpc_cred *cred = NULL; |
d530838b | 2086 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2087 | int status; |
2088 | ||
0e574af1 | 2089 | nfs_fattr_init(fattr); |
1da177e4 | 2090 | |
d530838b | 2091 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2092 | if (sattr->ia_valid & ATTR_FILE) { |
2093 | struct nfs_open_context *ctx; | |
2094 | ||
2095 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2096 | if (ctx) { |
2097 | cred = ctx->cred; | |
2098 | state = ctx->state; | |
2099 | } | |
659bfcd6 | 2100 | } |
08e9eac4 | 2101 | |
659bfcd6 | 2102 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2103 | if (status == 0) |
2104 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2105 | return status; |
2106 | } | |
2107 | ||
56659e99 TM |
2108 | static int _nfs4_proc_lookupfh(struct nfs_server *server, const struct nfs_fh *dirfh, |
2109 | const struct qstr *name, struct nfs_fh *fhandle, | |
2b3de441 DH |
2110 | struct nfs_fattr *fattr) |
2111 | { | |
2112 | int status; | |
2113 | struct nfs4_lookup_arg args = { | |
2114 | .bitmask = server->attr_bitmask, | |
2115 | .dir_fh = dirfh, | |
2116 | .name = name, | |
2117 | }; | |
2118 | struct nfs4_lookup_res res = { | |
2119 | .server = server, | |
2120 | .fattr = fattr, | |
2121 | .fh = fhandle, | |
2122 | }; | |
2123 | struct rpc_message msg = { | |
2124 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2125 | .rpc_argp = &args, | |
2126 | .rpc_resp = &res, | |
2127 | }; | |
2128 | ||
2129 | nfs_fattr_init(fattr); | |
2130 | ||
2131 | dprintk("NFS call lookupfh %s\n", name->name); | |
cccef3b9 | 2132 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
2b3de441 | 2133 | dprintk("NFS reply lookupfh: %d\n", status); |
2b3de441 DH |
2134 | return status; |
2135 | } | |
2136 | ||
2137 | static int nfs4_proc_lookupfh(struct nfs_server *server, struct nfs_fh *dirfh, | |
2138 | struct qstr *name, struct nfs_fh *fhandle, | |
2139 | struct nfs_fattr *fattr) | |
2140 | { | |
2141 | struct nfs4_exception exception = { }; | |
2142 | int err; | |
2143 | do { | |
4e56e082 TM |
2144 | err = _nfs4_proc_lookupfh(server, dirfh, name, fhandle, fattr); |
2145 | /* FIXME: !!!! */ | |
2146 | if (err == -NFS4ERR_MOVED) { | |
2147 | err = -EREMOTE; | |
2148 | break; | |
2149 | } | |
2150 | err = nfs4_handle_exception(server, err, &exception); | |
2b3de441 DH |
2151 | } while (exception.retry); |
2152 | return err; | |
2153 | } | |
2154 | ||
56659e99 | 2155 | static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, |
1da177e4 LT |
2156 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2157 | { | |
4e56e082 | 2158 | int status; |
1da177e4 LT |
2159 | |
2160 | dprintk("NFS call lookup %s\n", name->name); | |
4e56e082 | 2161 | status = _nfs4_proc_lookupfh(NFS_SERVER(dir), NFS_FH(dir), name, fhandle, fattr); |
6b97fd3d MN |
2162 | if (status == -NFS4ERR_MOVED) |
2163 | status = nfs4_get_referral(dir, name, fattr, fhandle); | |
1da177e4 LT |
2164 | dprintk("NFS reply lookup: %d\n", status); |
2165 | return status; | |
2166 | } | |
2167 | ||
2168 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2169 | { | |
2170 | struct nfs4_exception exception = { }; | |
2171 | int err; | |
2172 | do { | |
2173 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2174 | _nfs4_proc_lookup(dir, name, fhandle, fattr), | |
2175 | &exception); | |
2176 | } while (exception.retry); | |
2177 | return err; | |
2178 | } | |
2179 | ||
2180 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2181 | { | |
76b32999 TM |
2182 | struct nfs_server *server = NFS_SERVER(inode); |
2183 | struct nfs_fattr fattr; | |
1da177e4 LT |
2184 | struct nfs4_accessargs args = { |
2185 | .fh = NFS_FH(inode), | |
76b32999 TM |
2186 | .bitmask = server->attr_bitmask, |
2187 | }; | |
2188 | struct nfs4_accessres res = { | |
2189 | .server = server, | |
2190 | .fattr = &fattr, | |
1da177e4 | 2191 | }; |
1da177e4 LT |
2192 | struct rpc_message msg = { |
2193 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2194 | .rpc_argp = &args, | |
2195 | .rpc_resp = &res, | |
2196 | .rpc_cred = entry->cred, | |
2197 | }; | |
2198 | int mode = entry->mask; | |
2199 | int status; | |
2200 | ||
2201 | /* | |
2202 | * Determine which access bits we want to ask for... | |
2203 | */ | |
2204 | if (mode & MAY_READ) | |
2205 | args.access |= NFS4_ACCESS_READ; | |
2206 | if (S_ISDIR(inode->i_mode)) { | |
2207 | if (mode & MAY_WRITE) | |
2208 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2209 | if (mode & MAY_EXEC) | |
2210 | args.access |= NFS4_ACCESS_LOOKUP; | |
2211 | } else { | |
2212 | if (mode & MAY_WRITE) | |
2213 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2214 | if (mode & MAY_EXEC) | |
2215 | args.access |= NFS4_ACCESS_EXECUTE; | |
2216 | } | |
76b32999 | 2217 | nfs_fattr_init(&fattr); |
cccef3b9 | 2218 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2219 | if (!status) { |
2220 | entry->mask = 0; | |
2221 | if (res.access & NFS4_ACCESS_READ) | |
2222 | entry->mask |= MAY_READ; | |
2223 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
2224 | entry->mask |= MAY_WRITE; | |
2225 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
2226 | entry->mask |= MAY_EXEC; | |
76b32999 | 2227 | nfs_refresh_inode(inode, &fattr); |
1da177e4 LT |
2228 | } |
2229 | return status; | |
2230 | } | |
2231 | ||
2232 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2233 | { | |
2234 | struct nfs4_exception exception = { }; | |
2235 | int err; | |
2236 | do { | |
2237 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2238 | _nfs4_proc_access(inode, entry), | |
2239 | &exception); | |
2240 | } while (exception.retry); | |
2241 | return err; | |
2242 | } | |
2243 | ||
2244 | /* | |
2245 | * TODO: For the time being, we don't try to get any attributes | |
2246 | * along with any of the zero-copy operations READ, READDIR, | |
2247 | * READLINK, WRITE. | |
2248 | * | |
2249 | * In the case of the first three, we want to put the GETATTR | |
2250 | * after the read-type operation -- this is because it is hard | |
2251 | * to predict the length of a GETATTR response in v4, and thus | |
2252 | * align the READ data correctly. This means that the GETATTR | |
2253 | * may end up partially falling into the page cache, and we should | |
2254 | * shift it into the 'tail' of the xdr_buf before processing. | |
2255 | * To do this efficiently, we need to know the total length | |
2256 | * of data received, which doesn't seem to be available outside | |
2257 | * of the RPC layer. | |
2258 | * | |
2259 | * In the case of WRITE, we also want to put the GETATTR after | |
2260 | * the operation -- in this case because we want to make sure | |
2261 | * we get the post-operation mtime and size. This means that | |
2262 | * we can't use xdr_encode_pages() as written: we need a variant | |
2263 | * of it which would leave room in the 'tail' iovec. | |
2264 | * | |
2265 | * Both of these changes to the XDR layer would in fact be quite | |
2266 | * minor, but I decided to leave them for a subsequent patch. | |
2267 | */ | |
2268 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2269 | unsigned int pgbase, unsigned int pglen) | |
2270 | { | |
2271 | struct nfs4_readlink args = { | |
2272 | .fh = NFS_FH(inode), | |
2273 | .pgbase = pgbase, | |
2274 | .pglen = pglen, | |
2275 | .pages = &page, | |
2276 | }; | |
f50c7000 | 2277 | struct nfs4_readlink_res res; |
1da177e4 LT |
2278 | struct rpc_message msg = { |
2279 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2280 | .rpc_argp = &args, | |
f50c7000 | 2281 | .rpc_resp = &res, |
1da177e4 LT |
2282 | }; |
2283 | ||
cccef3b9 | 2284 | return nfs4_call_sync(NFS_SERVER(inode), &msg, &args, &res, 0); |
1da177e4 LT |
2285 | } |
2286 | ||
2287 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2288 | unsigned int pgbase, unsigned int pglen) | |
2289 | { | |
2290 | struct nfs4_exception exception = { }; | |
2291 | int err; | |
2292 | do { | |
2293 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2294 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2295 | &exception); | |
2296 | } while (exception.retry); | |
2297 | return err; | |
2298 | } | |
2299 | ||
1da177e4 LT |
2300 | /* |
2301 | * Got race? | |
2302 | * We will need to arrange for the VFS layer to provide an atomic open. | |
2303 | * Until then, this create/open method is prone to inefficiency and race | |
2304 | * conditions due to the lookup, create, and open VFS calls from sys_open() | |
2305 | * placed on the wire. | |
2306 | * | |
2307 | * Given the above sorry state of affairs, I'm simply sending an OPEN. | |
2308 | * The file will be opened again in the subsequent VFS open call | |
2309 | * (nfs4_proc_file_open). | |
2310 | * | |
2311 | * The open for read will just hang around to be used by any process that | |
2312 | * opens the file O_RDONLY. This will all be resolved with the VFS changes. | |
2313 | */ | |
2314 | ||
2315 | static int | |
2316 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
02a913a7 | 2317 | int flags, struct nameidata *nd) |
1da177e4 | 2318 | { |
ad389da7 | 2319 | struct path path = { |
4ac91378 | 2320 | .mnt = nd->path.mnt, |
ad389da7 TM |
2321 | .dentry = dentry, |
2322 | }; | |
1da177e4 LT |
2323 | struct nfs4_state *state; |
2324 | struct rpc_cred *cred; | |
dc0b027d | 2325 | fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE); |
1da177e4 LT |
2326 | int status = 0; |
2327 | ||
98a8e323 | 2328 | cred = rpc_lookup_cred(); |
1da177e4 LT |
2329 | if (IS_ERR(cred)) { |
2330 | status = PTR_ERR(cred); | |
2331 | goto out; | |
2332 | } | |
dc0b027d | 2333 | state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred); |
d4d9cdcb | 2334 | d_drop(dentry); |
1da177e4 LT |
2335 | if (IS_ERR(state)) { |
2336 | status = PTR_ERR(state); | |
659bfcd6 | 2337 | goto out_putcred; |
1da177e4 | 2338 | } |
d4d9cdcb | 2339 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2340 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
1da177e4 LT |
2341 | if (flags & O_EXCL) { |
2342 | struct nfs_fattr fattr; | |
659bfcd6 | 2343 | status = nfs4_do_setattr(state->inode, cred, &fattr, sattr, state); |
02a913a7 | 2344 | if (status == 0) |
65e4308d | 2345 | nfs_setattr_update_inode(state->inode, sattr); |
aa53ed54 | 2346 | nfs_post_op_update_inode(state->inode, &fattr); |
02a913a7 | 2347 | } |
ad389da7 | 2348 | if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0) |
dc0b027d | 2349 | status = nfs4_intent_set_file(nd, &path, state, fmode); |
02a913a7 | 2350 | else |
dc0b027d | 2351 | nfs4_close_sync(&path, state, fmode); |
659bfcd6 TM |
2352 | out_putcred: |
2353 | put_rpccred(cred); | |
1da177e4 LT |
2354 | out: |
2355 | return status; | |
2356 | } | |
2357 | ||
2358 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2359 | { | |
16e42959 | 2360 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2361 | struct nfs_removeargs args = { |
1da177e4 | 2362 | .fh = NFS_FH(dir), |
4fdc17b2 TM |
2363 | .name.len = name->len, |
2364 | .name.name = name->name, | |
16e42959 TM |
2365 | .bitmask = server->attr_bitmask, |
2366 | }; | |
4fdc17b2 | 2367 | struct nfs_removeres res = { |
16e42959 | 2368 | .server = server, |
1da177e4 | 2369 | }; |
1da177e4 | 2370 | struct rpc_message msg = { |
4fdc17b2 TM |
2371 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2372 | .rpc_argp = &args, | |
2373 | .rpc_resp = &res, | |
1da177e4 LT |
2374 | }; |
2375 | int status; | |
2376 | ||
4fdc17b2 | 2377 | nfs_fattr_init(&res.dir_attr); |
cccef3b9 | 2378 | status = nfs4_call_sync(server, &msg, &args, &res, 1); |
16e42959 TM |
2379 | if (status == 0) { |
2380 | update_changeattr(dir, &res.cinfo); | |
4fdc17b2 | 2381 | nfs_post_op_update_inode(dir, &res.dir_attr); |
16e42959 | 2382 | } |
1da177e4 LT |
2383 | return status; |
2384 | } | |
2385 | ||
2386 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2387 | { | |
2388 | struct nfs4_exception exception = { }; | |
2389 | int err; | |
2390 | do { | |
2391 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2392 | _nfs4_proc_remove(dir, name), | |
2393 | &exception); | |
2394 | } while (exception.retry); | |
2395 | return err; | |
2396 | } | |
2397 | ||
e4eff1a6 | 2398 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2399 | { |
e4eff1a6 TM |
2400 | struct nfs_server *server = NFS_SERVER(dir); |
2401 | struct nfs_removeargs *args = msg->rpc_argp; | |
2402 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2403 | |
a65318bf | 2404 | args->bitmask = server->cache_consistency_bitmask; |
e4eff1a6 | 2405 | res->server = server; |
1da177e4 | 2406 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
1da177e4 LT |
2407 | } |
2408 | ||
e4eff1a6 | 2409 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2410 | { |
e4eff1a6 TM |
2411 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2412 | ||
9e33bed5 | 2413 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
2414 | return 0; |
2415 | update_changeattr(dir, &res->cinfo); | |
2416 | nfs_post_op_update_inode(dir, &res->dir_attr); | |
2417 | return 1; | |
1da177e4 LT |
2418 | } |
2419 | ||
2420 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2421 | struct inode *new_dir, struct qstr *new_name) | |
2422 | { | |
6caf2c82 | 2423 | struct nfs_server *server = NFS_SERVER(old_dir); |
1da177e4 LT |
2424 | struct nfs4_rename_arg arg = { |
2425 | .old_dir = NFS_FH(old_dir), | |
2426 | .new_dir = NFS_FH(new_dir), | |
2427 | .old_name = old_name, | |
2428 | .new_name = new_name, | |
6caf2c82 TM |
2429 | .bitmask = server->attr_bitmask, |
2430 | }; | |
2431 | struct nfs_fattr old_fattr, new_fattr; | |
2432 | struct nfs4_rename_res res = { | |
2433 | .server = server, | |
2434 | .old_fattr = &old_fattr, | |
2435 | .new_fattr = &new_fattr, | |
1da177e4 | 2436 | }; |
1da177e4 LT |
2437 | struct rpc_message msg = { |
2438 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2439 | .rpc_argp = &arg, | |
2440 | .rpc_resp = &res, | |
2441 | }; | |
2442 | int status; | |
2443 | ||
6caf2c82 TM |
2444 | nfs_fattr_init(res.old_fattr); |
2445 | nfs_fattr_init(res.new_fattr); | |
cccef3b9 | 2446 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
1da177e4 LT |
2447 | |
2448 | if (!status) { | |
2449 | update_changeattr(old_dir, &res.old_cinfo); | |
6caf2c82 | 2450 | nfs_post_op_update_inode(old_dir, res.old_fattr); |
1da177e4 | 2451 | update_changeattr(new_dir, &res.new_cinfo); |
6caf2c82 | 2452 | nfs_post_op_update_inode(new_dir, res.new_fattr); |
1da177e4 LT |
2453 | } |
2454 | return status; | |
2455 | } | |
2456 | ||
2457 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2458 | struct inode *new_dir, struct qstr *new_name) | |
2459 | { | |
2460 | struct nfs4_exception exception = { }; | |
2461 | int err; | |
2462 | do { | |
2463 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2464 | _nfs4_proc_rename(old_dir, old_name, | |
2465 | new_dir, new_name), | |
2466 | &exception); | |
2467 | } while (exception.retry); | |
2468 | return err; | |
2469 | } | |
2470 | ||
2471 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2472 | { | |
91ba2eee | 2473 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2474 | struct nfs4_link_arg arg = { |
2475 | .fh = NFS_FH(inode), | |
2476 | .dir_fh = NFS_FH(dir), | |
2477 | .name = name, | |
91ba2eee TM |
2478 | .bitmask = server->attr_bitmask, |
2479 | }; | |
2480 | struct nfs_fattr fattr, dir_attr; | |
2481 | struct nfs4_link_res res = { | |
2482 | .server = server, | |
2483 | .fattr = &fattr, | |
2484 | .dir_attr = &dir_attr, | |
1da177e4 | 2485 | }; |
1da177e4 LT |
2486 | struct rpc_message msg = { |
2487 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
2488 | .rpc_argp = &arg, | |
91ba2eee | 2489 | .rpc_resp = &res, |
1da177e4 LT |
2490 | }; |
2491 | int status; | |
2492 | ||
91ba2eee TM |
2493 | nfs_fattr_init(res.fattr); |
2494 | nfs_fattr_init(res.dir_attr); | |
cccef3b9 | 2495 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
91ba2eee TM |
2496 | if (!status) { |
2497 | update_changeattr(dir, &res.cinfo); | |
2498 | nfs_post_op_update_inode(dir, res.dir_attr); | |
73a3d07c | 2499 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 2500 | } |
1da177e4 LT |
2501 | |
2502 | return status; | |
2503 | } | |
2504 | ||
2505 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2506 | { | |
2507 | struct nfs4_exception exception = { }; | |
2508 | int err; | |
2509 | do { | |
2510 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2511 | _nfs4_proc_link(inode, dir, name), | |
2512 | &exception); | |
2513 | } while (exception.retry); | |
2514 | return err; | |
2515 | } | |
2516 | ||
57dc9a57 TM |
2517 | struct nfs4_createdata { |
2518 | struct rpc_message msg; | |
2519 | struct nfs4_create_arg arg; | |
2520 | struct nfs4_create_res res; | |
2521 | struct nfs_fh fh; | |
2522 | struct nfs_fattr fattr; | |
2523 | struct nfs_fattr dir_fattr; | |
2524 | }; | |
2525 | ||
2526 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
2527 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
2528 | { | |
2529 | struct nfs4_createdata *data; | |
2530 | ||
2531 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
2532 | if (data != NULL) { | |
2533 | struct nfs_server *server = NFS_SERVER(dir); | |
2534 | ||
2535 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
2536 | data->msg.rpc_argp = &data->arg; | |
2537 | data->msg.rpc_resp = &data->res; | |
2538 | data->arg.dir_fh = NFS_FH(dir); | |
2539 | data->arg.server = server; | |
2540 | data->arg.name = name; | |
2541 | data->arg.attrs = sattr; | |
2542 | data->arg.ftype = ftype; | |
2543 | data->arg.bitmask = server->attr_bitmask; | |
2544 | data->res.server = server; | |
2545 | data->res.fh = &data->fh; | |
2546 | data->res.fattr = &data->fattr; | |
2547 | data->res.dir_fattr = &data->dir_fattr; | |
2548 | nfs_fattr_init(data->res.fattr); | |
2549 | nfs_fattr_init(data->res.dir_fattr); | |
2550 | } | |
2551 | return data; | |
2552 | } | |
2553 | ||
2554 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
2555 | { | |
cccef3b9 AA |
2556 | int status = nfs4_call_sync(NFS_SERVER(dir), &data->msg, |
2557 | &data->arg, &data->res, 1); | |
57dc9a57 TM |
2558 | if (status == 0) { |
2559 | update_changeattr(dir, &data->res.dir_cinfo); | |
2560 | nfs_post_op_update_inode(dir, data->res.dir_fattr); | |
2561 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); | |
2562 | } | |
2563 | return status; | |
2564 | } | |
2565 | ||
2566 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
2567 | { | |
2568 | kfree(data); | |
2569 | } | |
2570 | ||
4f390c15 | 2571 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2572 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 2573 | { |
57dc9a57 TM |
2574 | struct nfs4_createdata *data; |
2575 | int status = -ENAMETOOLONG; | |
1da177e4 | 2576 | |
94a6d753 | 2577 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 2578 | goto out; |
4f390c15 | 2579 | |
57dc9a57 TM |
2580 | status = -ENOMEM; |
2581 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
2582 | if (data == NULL) | |
2583 | goto out; | |
2584 | ||
2585 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
2586 | data->arg.u.symlink.pages = &page; | |
2587 | data->arg.u.symlink.len = len; | |
1da177e4 | 2588 | |
57dc9a57 TM |
2589 | status = nfs4_do_create(dir, dentry, data); |
2590 | ||
2591 | nfs4_free_createdata(data); | |
2592 | out: | |
1da177e4 LT |
2593 | return status; |
2594 | } | |
2595 | ||
4f390c15 | 2596 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2597 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
2598 | { |
2599 | struct nfs4_exception exception = { }; | |
2600 | int err; | |
2601 | do { | |
2602 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
2603 | _nfs4_proc_symlink(dir, dentry, page, |
2604 | len, sattr), | |
1da177e4 LT |
2605 | &exception); |
2606 | } while (exception.retry); | |
2607 | return err; | |
2608 | } | |
2609 | ||
2610 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2611 | struct iattr *sattr) | |
2612 | { | |
57dc9a57 TM |
2613 | struct nfs4_createdata *data; |
2614 | int status = -ENOMEM; | |
1da177e4 | 2615 | |
57dc9a57 TM |
2616 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
2617 | if (data == NULL) | |
2618 | goto out; | |
2619 | ||
2620 | status = nfs4_do_create(dir, dentry, data); | |
2621 | ||
2622 | nfs4_free_createdata(data); | |
2623 | out: | |
1da177e4 LT |
2624 | return status; |
2625 | } | |
2626 | ||
2627 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2628 | struct iattr *sattr) | |
2629 | { | |
2630 | struct nfs4_exception exception = { }; | |
2631 | int err; | |
2632 | do { | |
2633 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2634 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
2635 | &exception); | |
2636 | } while (exception.retry); | |
2637 | return err; | |
2638 | } | |
2639 | ||
2640 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
2641 | u64 cookie, struct page *page, unsigned int count, int plus) | |
2642 | { | |
2643 | struct inode *dir = dentry->d_inode; | |
2644 | struct nfs4_readdir_arg args = { | |
2645 | .fh = NFS_FH(dir), | |
2646 | .pages = &page, | |
2647 | .pgbase = 0, | |
2648 | .count = count, | |
a65318bf | 2649 | .bitmask = NFS_SERVER(dentry->d_inode)->cache_consistency_bitmask, |
1da177e4 LT |
2650 | }; |
2651 | struct nfs4_readdir_res res; | |
2652 | struct rpc_message msg = { | |
2653 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
2654 | .rpc_argp = &args, | |
2655 | .rpc_resp = &res, | |
2656 | .rpc_cred = cred, | |
2657 | }; | |
2658 | int status; | |
2659 | ||
3110ff80 | 2660 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
2661 | dentry->d_parent->d_name.name, |
2662 | dentry->d_name.name, | |
2663 | (unsigned long long)cookie); | |
1da177e4 LT |
2664 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
2665 | res.pgbase = args.pgbase; | |
cccef3b9 | 2666 | status = nfs4_call_sync(NFS_SERVER(dir), &msg, &args, &res, 0); |
1da177e4 LT |
2667 | if (status == 0) |
2668 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); | |
c4812998 TM |
2669 | |
2670 | nfs_invalidate_atime(dir); | |
2671 | ||
3110ff80 | 2672 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
2673 | return status; |
2674 | } | |
2675 | ||
2676 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
2677 | u64 cookie, struct page *page, unsigned int count, int plus) | |
2678 | { | |
2679 | struct nfs4_exception exception = { }; | |
2680 | int err; | |
2681 | do { | |
2682 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
2683 | _nfs4_proc_readdir(dentry, cred, cookie, | |
2684 | page, count, plus), | |
2685 | &exception); | |
2686 | } while (exception.retry); | |
2687 | return err; | |
2688 | } | |
2689 | ||
2690 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2691 | struct iattr *sattr, dev_t rdev) | |
2692 | { | |
57dc9a57 TM |
2693 | struct nfs4_createdata *data; |
2694 | int mode = sattr->ia_mode; | |
2695 | int status = -ENOMEM; | |
1da177e4 LT |
2696 | |
2697 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
2698 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
57dc9a57 TM |
2699 | |
2700 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); | |
2701 | if (data == NULL) | |
2702 | goto out; | |
2703 | ||
1da177e4 | 2704 | if (S_ISFIFO(mode)) |
57dc9a57 | 2705 | data->arg.ftype = NF4FIFO; |
1da177e4 | 2706 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
2707 | data->arg.ftype = NF4BLK; |
2708 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
2709 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
2710 | } |
2711 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
2712 | data->arg.ftype = NF4CHR; |
2713 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
2714 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 | 2715 | } |
1da177e4 | 2716 | |
57dc9a57 TM |
2717 | status = nfs4_do_create(dir, dentry, data); |
2718 | ||
2719 | nfs4_free_createdata(data); | |
2720 | out: | |
1da177e4 LT |
2721 | return status; |
2722 | } | |
2723 | ||
2724 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2725 | struct iattr *sattr, dev_t rdev) | |
2726 | { | |
2727 | struct nfs4_exception exception = { }; | |
2728 | int err; | |
2729 | do { | |
2730 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2731 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
2732 | &exception); | |
2733 | } while (exception.retry); | |
2734 | return err; | |
2735 | } | |
2736 | ||
2737 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
2738 | struct nfs_fsstat *fsstat) | |
2739 | { | |
2740 | struct nfs4_statfs_arg args = { | |
2741 | .fh = fhandle, | |
2742 | .bitmask = server->attr_bitmask, | |
2743 | }; | |
24ad148a BH |
2744 | struct nfs4_statfs_res res = { |
2745 | .fsstat = fsstat, | |
2746 | }; | |
1da177e4 LT |
2747 | struct rpc_message msg = { |
2748 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
2749 | .rpc_argp = &args, | |
24ad148a | 2750 | .rpc_resp = &res, |
1da177e4 LT |
2751 | }; |
2752 | ||
0e574af1 | 2753 | nfs_fattr_init(fsstat->fattr); |
cccef3b9 | 2754 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2755 | } |
2756 | ||
2757 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
2758 | { | |
2759 | struct nfs4_exception exception = { }; | |
2760 | int err; | |
2761 | do { | |
2762 | err = nfs4_handle_exception(server, | |
2763 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
2764 | &exception); | |
2765 | } while (exception.retry); | |
2766 | return err; | |
2767 | } | |
2768 | ||
2769 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
2770 | struct nfs_fsinfo *fsinfo) | |
2771 | { | |
2772 | struct nfs4_fsinfo_arg args = { | |
2773 | .fh = fhandle, | |
2774 | .bitmask = server->attr_bitmask, | |
2775 | }; | |
3dda5e43 BH |
2776 | struct nfs4_fsinfo_res res = { |
2777 | .fsinfo = fsinfo, | |
2778 | }; | |
1da177e4 LT |
2779 | struct rpc_message msg = { |
2780 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
2781 | .rpc_argp = &args, | |
3dda5e43 | 2782 | .rpc_resp = &res, |
1da177e4 LT |
2783 | }; |
2784 | ||
cccef3b9 | 2785 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2786 | } |
2787 | ||
2788 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
2789 | { | |
2790 | struct nfs4_exception exception = { }; | |
2791 | int err; | |
2792 | ||
2793 | do { | |
2794 | err = nfs4_handle_exception(server, | |
2795 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
2796 | &exception); | |
2797 | } while (exception.retry); | |
2798 | return err; | |
2799 | } | |
2800 | ||
2801 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
2802 | { | |
0e574af1 | 2803 | nfs_fattr_init(fsinfo->fattr); |
1da177e4 LT |
2804 | return nfs4_do_fsinfo(server, fhandle, fsinfo); |
2805 | } | |
2806 | ||
2807 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
2808 | struct nfs_pathconf *pathconf) | |
2809 | { | |
2810 | struct nfs4_pathconf_arg args = { | |
2811 | .fh = fhandle, | |
2812 | .bitmask = server->attr_bitmask, | |
2813 | }; | |
d45b2989 BH |
2814 | struct nfs4_pathconf_res res = { |
2815 | .pathconf = pathconf, | |
2816 | }; | |
1da177e4 LT |
2817 | struct rpc_message msg = { |
2818 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
2819 | .rpc_argp = &args, | |
d45b2989 | 2820 | .rpc_resp = &res, |
1da177e4 LT |
2821 | }; |
2822 | ||
2823 | /* None of the pathconf attributes are mandatory to implement */ | |
2824 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
2825 | memset(pathconf, 0, sizeof(*pathconf)); | |
2826 | return 0; | |
2827 | } | |
2828 | ||
0e574af1 | 2829 | nfs_fattr_init(pathconf->fattr); |
cccef3b9 | 2830 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2831 | } |
2832 | ||
2833 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
2834 | struct nfs_pathconf *pathconf) | |
2835 | { | |
2836 | struct nfs4_exception exception = { }; | |
2837 | int err; | |
2838 | ||
2839 | do { | |
2840 | err = nfs4_handle_exception(server, | |
2841 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
2842 | &exception); | |
2843 | } while (exception.retry); | |
2844 | return err; | |
2845 | } | |
2846 | ||
ec06c096 | 2847 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 2848 | { |
ec06c096 | 2849 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 2850 | |
9e33bed5 | 2851 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
1da177e4 | 2852 | rpc_restart_call(task); |
ec06c096 | 2853 | return -EAGAIN; |
1da177e4 | 2854 | } |
8850df99 TM |
2855 | |
2856 | nfs_invalidate_atime(data->inode); | |
1da177e4 | 2857 | if (task->tk_status > 0) |
ec06c096 TM |
2858 | renew_lease(server, data->timestamp); |
2859 | return 0; | |
1da177e4 LT |
2860 | } |
2861 | ||
bdc7f021 | 2862 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 2863 | { |
1da177e4 | 2864 | data->timestamp = jiffies; |
bdc7f021 | 2865 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
1da177e4 LT |
2866 | } |
2867 | ||
788e7a89 | 2868 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 2869 | { |
1da177e4 LT |
2870 | struct inode *inode = data->inode; |
2871 | ||
9e33bed5 | 2872 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
1da177e4 | 2873 | rpc_restart_call(task); |
788e7a89 | 2874 | return -EAGAIN; |
1da177e4 | 2875 | } |
4f9838c7 | 2876 | if (task->tk_status >= 0) { |
1da177e4 | 2877 | renew_lease(NFS_SERVER(inode), data->timestamp); |
70ca8852 | 2878 | nfs_post_op_update_inode_force_wcc(inode, data->res.fattr); |
4f9838c7 | 2879 | } |
788e7a89 | 2880 | return 0; |
1da177e4 LT |
2881 | } |
2882 | ||
bdc7f021 | 2883 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 2884 | { |
bdc7f021 TM |
2885 | struct nfs_server *server = NFS_SERVER(data->inode); |
2886 | ||
a65318bf | 2887 | data->args.bitmask = server->cache_consistency_bitmask; |
4f9838c7 | 2888 | data->res.server = server; |
1da177e4 LT |
2889 | data->timestamp = jiffies; |
2890 | ||
bdc7f021 | 2891 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
1da177e4 LT |
2892 | } |
2893 | ||
788e7a89 | 2894 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 2895 | { |
1da177e4 LT |
2896 | struct inode *inode = data->inode; |
2897 | ||
9e33bed5 | 2898 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
1da177e4 | 2899 | rpc_restart_call(task); |
788e7a89 | 2900 | return -EAGAIN; |
1da177e4 | 2901 | } |
9e08a3c5 | 2902 | nfs_refresh_inode(inode, data->res.fattr); |
788e7a89 | 2903 | return 0; |
1da177e4 LT |
2904 | } |
2905 | ||
bdc7f021 | 2906 | static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 2907 | { |
788e7a89 | 2908 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 2909 | |
a65318bf | 2910 | data->args.bitmask = server->cache_consistency_bitmask; |
4f9838c7 | 2911 | data->res.server = server; |
bdc7f021 | 2912 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
1da177e4 LT |
2913 | } |
2914 | ||
2915 | /* | |
2916 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
2917 | * standalone procedure for queueing an asynchronous RENEW. | |
2918 | */ | |
963d8fe5 | 2919 | static void nfs4_renew_done(struct rpc_task *task, void *data) |
1da177e4 | 2920 | { |
adfa6f98 | 2921 | struct nfs_client *clp = (struct nfs_client *)task->tk_msg.rpc_argp; |
963d8fe5 | 2922 | unsigned long timestamp = (unsigned long)data; |
1da177e4 LT |
2923 | |
2924 | if (task->tk_status < 0) { | |
95baa25c TM |
2925 | /* Unless we're shutting down, schedule state recovery! */ |
2926 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) != 0) | |
2927 | nfs4_schedule_state_recovery(clp); | |
1da177e4 LT |
2928 | return; |
2929 | } | |
2930 | spin_lock(&clp->cl_lock); | |
2931 | if (time_before(clp->cl_last_renewal,timestamp)) | |
2932 | clp->cl_last_renewal = timestamp; | |
2933 | spin_unlock(&clp->cl_lock); | |
2934 | } | |
2935 | ||
963d8fe5 TM |
2936 | static const struct rpc_call_ops nfs4_renew_ops = { |
2937 | .rpc_call_done = nfs4_renew_done, | |
2938 | }; | |
2939 | ||
adfa6f98 | 2940 | int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
2941 | { |
2942 | struct rpc_message msg = { | |
2943 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
2944 | .rpc_argp = clp, | |
b4454fe1 | 2945 | .rpc_cred = cred, |
1da177e4 LT |
2946 | }; |
2947 | ||
2948 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, | |
963d8fe5 | 2949 | &nfs4_renew_ops, (void *)jiffies); |
1da177e4 LT |
2950 | } |
2951 | ||
adfa6f98 | 2952 | int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
2953 | { |
2954 | struct rpc_message msg = { | |
2955 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
2956 | .rpc_argp = clp, | |
b4454fe1 | 2957 | .rpc_cred = cred, |
1da177e4 LT |
2958 | }; |
2959 | unsigned long now = jiffies; | |
2960 | int status; | |
2961 | ||
2962 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
2963 | if (status < 0) | |
2964 | return status; | |
2965 | spin_lock(&clp->cl_lock); | |
2966 | if (time_before(clp->cl_last_renewal,now)) | |
2967 | clp->cl_last_renewal = now; | |
2968 | spin_unlock(&clp->cl_lock); | |
2969 | return 0; | |
2970 | } | |
2971 | ||
aa1870af BF |
2972 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
2973 | { | |
2974 | return (server->caps & NFS_CAP_ACLS) | |
2975 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
2976 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
2977 | } | |
2978 | ||
2979 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
2980 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
2981 | * the stack. | |
2982 | */ | |
2983 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
2984 | ||
2985 | static void buf_to_pages(const void *buf, size_t buflen, | |
2986 | struct page **pages, unsigned int *pgbase) | |
2987 | { | |
2988 | const void *p = buf; | |
2989 | ||
2990 | *pgbase = offset_in_page(buf); | |
2991 | p -= *pgbase; | |
2992 | while (p < buf + buflen) { | |
2993 | *(pages++) = virt_to_page(p); | |
2994 | p += PAGE_CACHE_SIZE; | |
2995 | } | |
2996 | } | |
2997 | ||
e50a1c2e BF |
2998 | struct nfs4_cached_acl { |
2999 | int cached; | |
3000 | size_t len; | |
3e9d4154 | 3001 | char data[0]; |
e50a1c2e BF |
3002 | }; |
3003 | ||
3004 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3005 | { | |
3006 | struct nfs_inode *nfsi = NFS_I(inode); | |
3007 | ||
3008 | spin_lock(&inode->i_lock); | |
3009 | kfree(nfsi->nfs4_acl); | |
3010 | nfsi->nfs4_acl = acl; | |
3011 | spin_unlock(&inode->i_lock); | |
3012 | } | |
3013 | ||
3014 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3015 | { | |
3016 | nfs4_set_cached_acl(inode, NULL); | |
3017 | } | |
3018 | ||
3019 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3020 | { | |
3021 | struct nfs_inode *nfsi = NFS_I(inode); | |
3022 | struct nfs4_cached_acl *acl; | |
3023 | int ret = -ENOENT; | |
3024 | ||
3025 | spin_lock(&inode->i_lock); | |
3026 | acl = nfsi->nfs4_acl; | |
3027 | if (acl == NULL) | |
3028 | goto out; | |
3029 | if (buf == NULL) /* user is just asking for length */ | |
3030 | goto out_len; | |
3031 | if (acl->cached == 0) | |
3032 | goto out; | |
3033 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3034 | if (acl->len > buflen) | |
3035 | goto out; | |
3036 | memcpy(buf, acl->data, acl->len); | |
3037 | out_len: | |
3038 | ret = acl->len; | |
3039 | out: | |
3040 | spin_unlock(&inode->i_lock); | |
3041 | return ret; | |
3042 | } | |
3043 | ||
3044 | static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len) | |
3045 | { | |
3046 | struct nfs4_cached_acl *acl; | |
3047 | ||
3048 | if (buf && acl_len <= PAGE_SIZE) { | |
3049 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); | |
3050 | if (acl == NULL) | |
3051 | goto out; | |
3052 | acl->cached = 1; | |
3053 | memcpy(acl->data, buf, acl_len); | |
3054 | } else { | |
3055 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3056 | if (acl == NULL) | |
3057 | goto out; | |
3058 | acl->cached = 0; | |
3059 | } | |
3060 | acl->len = acl_len; | |
3061 | out: | |
3062 | nfs4_set_cached_acl(inode, acl); | |
3063 | } | |
3064 | ||
16b4289c | 3065 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3066 | { |
aa1870af BF |
3067 | struct page *pages[NFS4ACL_MAXPAGES]; |
3068 | struct nfs_getaclargs args = { | |
3069 | .fh = NFS_FH(inode), | |
3070 | .acl_pages = pages, | |
3071 | .acl_len = buflen, | |
3072 | }; | |
663c79b3 BH |
3073 | struct nfs_getaclres res = { |
3074 | .acl_len = buflen, | |
3075 | }; | |
e50a1c2e | 3076 | void *resp_buf; |
aa1870af BF |
3077 | struct rpc_message msg = { |
3078 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3079 | .rpc_argp = &args, | |
663c79b3 | 3080 | .rpc_resp = &res, |
aa1870af | 3081 | }; |
e50a1c2e | 3082 | struct page *localpage = NULL; |
aa1870af BF |
3083 | int ret; |
3084 | ||
e50a1c2e BF |
3085 | if (buflen < PAGE_SIZE) { |
3086 | /* As long as we're doing a round trip to the server anyway, | |
3087 | * let's be prepared for a page of acl data. */ | |
3088 | localpage = alloc_page(GFP_KERNEL); | |
3089 | resp_buf = page_address(localpage); | |
3090 | if (localpage == NULL) | |
3091 | return -ENOMEM; | |
3092 | args.acl_pages[0] = localpage; | |
3093 | args.acl_pgbase = 0; | |
663c79b3 | 3094 | args.acl_len = PAGE_SIZE; |
e50a1c2e BF |
3095 | } else { |
3096 | resp_buf = buf; | |
3097 | buf_to_pages(buf, buflen, args.acl_pages, &args.acl_pgbase); | |
3098 | } | |
cccef3b9 | 3099 | ret = nfs4_call_sync(NFS_SERVER(inode), &msg, &args, &res, 0); |
e50a1c2e BF |
3100 | if (ret) |
3101 | goto out_free; | |
663c79b3 BH |
3102 | if (res.acl_len > args.acl_len) |
3103 | nfs4_write_cached_acl(inode, NULL, res.acl_len); | |
e50a1c2e | 3104 | else |
663c79b3 | 3105 | nfs4_write_cached_acl(inode, resp_buf, res.acl_len); |
e50a1c2e BF |
3106 | if (buf) { |
3107 | ret = -ERANGE; | |
663c79b3 | 3108 | if (res.acl_len > buflen) |
e50a1c2e BF |
3109 | goto out_free; |
3110 | if (localpage) | |
663c79b3 | 3111 | memcpy(buf, resp_buf, res.acl_len); |
e50a1c2e | 3112 | } |
663c79b3 | 3113 | ret = res.acl_len; |
e50a1c2e BF |
3114 | out_free: |
3115 | if (localpage) | |
3116 | __free_page(localpage); | |
aa1870af BF |
3117 | return ret; |
3118 | } | |
3119 | ||
16b4289c TM |
3120 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3121 | { | |
3122 | struct nfs4_exception exception = { }; | |
3123 | ssize_t ret; | |
3124 | do { | |
3125 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3126 | if (ret >= 0) | |
3127 | break; | |
3128 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3129 | } while (exception.retry); | |
3130 | return ret; | |
3131 | } | |
3132 | ||
e50a1c2e BF |
3133 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3134 | { | |
3135 | struct nfs_server *server = NFS_SERVER(inode); | |
3136 | int ret; | |
3137 | ||
3138 | if (!nfs4_server_supports_acls(server)) | |
3139 | return -EOPNOTSUPP; | |
3140 | ret = nfs_revalidate_inode(server, inode); | |
3141 | if (ret < 0) | |
3142 | return ret; | |
f41f7418 TM |
3143 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
3144 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
3145 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
3146 | if (ret != -ENOENT) | |
3147 | return ret; | |
3148 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3149 | } | |
3150 | ||
16b4289c | 3151 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3152 | { |
3153 | struct nfs_server *server = NFS_SERVER(inode); | |
3154 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3155 | struct nfs_setaclargs arg = { | |
3156 | .fh = NFS_FH(inode), | |
3157 | .acl_pages = pages, | |
3158 | .acl_len = buflen, | |
3159 | }; | |
73c403a9 | 3160 | struct nfs_setaclres res; |
4b580ee3 BF |
3161 | struct rpc_message msg = { |
3162 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3163 | .rpc_argp = &arg, | |
73c403a9 | 3164 | .rpc_resp = &res, |
4b580ee3 BF |
3165 | }; |
3166 | int ret; | |
3167 | ||
3168 | if (!nfs4_server_supports_acls(server)) | |
3169 | return -EOPNOTSUPP; | |
642ac549 | 3170 | nfs_inode_return_delegation(inode); |
4b580ee3 | 3171 | buf_to_pages(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
cccef3b9 | 3172 | ret = nfs4_call_sync(server, &msg, &arg, &res, 1); |
f41f7418 TM |
3173 | nfs_access_zap_cache(inode); |
3174 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3175 | return ret; |
3176 | } | |
3177 | ||
16b4289c TM |
3178 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3179 | { | |
3180 | struct nfs4_exception exception = { }; | |
3181 | int err; | |
3182 | do { | |
3183 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3184 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3185 | &exception); | |
3186 | } while (exception.retry); | |
3187 | return err; | |
3188 | } | |
3189 | ||
1da177e4 | 3190 | static int |
9e33bed5 | 3191 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 3192 | { |
7539bbab | 3193 | struct nfs_client *clp = server->nfs_client; |
1da177e4 LT |
3194 | |
3195 | if (!clp || task->tk_status >= 0) | |
3196 | return 0; | |
3197 | switch(task->tk_status) { | |
9e33bed5 TM |
3198 | case -NFS4ERR_ADMIN_REVOKED: |
3199 | case -NFS4ERR_BAD_STATEID: | |
3200 | case -NFS4ERR_OPENMODE: | |
3201 | if (state == NULL) | |
3202 | break; | |
3203 | nfs4_state_mark_reclaim_nograce(clp, state); | |
1da177e4 LT |
3204 | case -NFS4ERR_STALE_CLIENTID: |
3205 | case -NFS4ERR_STALE_STATEID: | |
3206 | case -NFS4ERR_EXPIRED: | |
5d00837b | 3207 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
1da177e4 | 3208 | nfs4_schedule_state_recovery(clp); |
e005e804 | 3209 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
fda13939 | 3210 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); |
1da177e4 LT |
3211 | task->tk_status = 0; |
3212 | return -EAGAIN; | |
1da177e4 | 3213 | case -NFS4ERR_DELAY: |
2e96d286 | 3214 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 3215 | case -NFS4ERR_GRACE: |
1da177e4 LT |
3216 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
3217 | task->tk_status = 0; | |
3218 | return -EAGAIN; | |
3219 | case -NFS4ERR_OLD_STATEID: | |
3220 | task->tk_status = 0; | |
3221 | return -EAGAIN; | |
3222 | } | |
3223 | task->tk_status = nfs4_map_errors(task->tk_status); | |
3224 | return 0; | |
3225 | } | |
3226 | ||
adfa6f98 | 3227 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, unsigned short port, struct rpc_cred *cred) |
1da177e4 LT |
3228 | { |
3229 | nfs4_verifier sc_verifier; | |
3230 | struct nfs4_setclientid setclientid = { | |
3231 | .sc_verifier = &sc_verifier, | |
3232 | .sc_prog = program, | |
3233 | }; | |
3234 | struct rpc_message msg = { | |
3235 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
3236 | .rpc_argp = &setclientid, | |
3237 | .rpc_resp = clp, | |
286d7d6a | 3238 | .rpc_cred = cred, |
1da177e4 | 3239 | }; |
bc4785cd | 3240 | __be32 *p; |
1da177e4 LT |
3241 | int loop = 0; |
3242 | int status; | |
3243 | ||
bc4785cd | 3244 | p = (__be32*)sc_verifier.data; |
1da177e4 LT |
3245 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); |
3246 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
3247 | ||
3248 | for(;;) { | |
3249 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, | |
69dd716c | 3250 | sizeof(setclientid.sc_name), "%s/%s %s %s %u", |
d4d3c507 CL |
3251 | clp->cl_ipaddr, |
3252 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3253 | RPC_DISPLAY_ADDR), | |
69dd716c TM |
3254 | rpc_peeraddr2str(clp->cl_rpcclient, |
3255 | RPC_DISPLAY_PROTO), | |
78ea323b | 3256 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
1da177e4 LT |
3257 | clp->cl_id_uniquifier); |
3258 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
d4d3c507 CL |
3259 | sizeof(setclientid.sc_netid), |
3260 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3261 | RPC_DISPLAY_NETID)); | |
1da177e4 | 3262 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 3263 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
3264 | clp->cl_ipaddr, port >> 8, port & 255); |
3265 | ||
3266 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3267 | if (status != -NFS4ERR_CLID_INUSE) | |
3268 | break; | |
3269 | if (signalled()) | |
3270 | break; | |
3271 | if (loop++ & 1) | |
3272 | ssleep(clp->cl_lease_time + 1); | |
3273 | else | |
3274 | if (++clp->cl_id_uniquifier == 0) | |
3275 | break; | |
3276 | } | |
3277 | return status; | |
3278 | } | |
3279 | ||
adfa6f98 | 3280 | static int _nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3281 | { |
3282 | struct nfs_fsinfo fsinfo; | |
3283 | struct rpc_message msg = { | |
3284 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
3285 | .rpc_argp = clp, | |
3286 | .rpc_resp = &fsinfo, | |
286d7d6a | 3287 | .rpc_cred = cred, |
1da177e4 LT |
3288 | }; |
3289 | unsigned long now; | |
3290 | int status; | |
3291 | ||
3292 | now = jiffies; | |
3293 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3294 | if (status == 0) { | |
3295 | spin_lock(&clp->cl_lock); | |
3296 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
3297 | clp->cl_last_renewal = now; | |
3298 | spin_unlock(&clp->cl_lock); | |
3299 | } | |
3300 | return status; | |
3301 | } | |
3302 | ||
adfa6f98 | 3303 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct rpc_cred *cred) |
51581f3b | 3304 | { |
77e03677 | 3305 | long timeout = 0; |
51581f3b TM |
3306 | int err; |
3307 | do { | |
3308 | err = _nfs4_proc_setclientid_confirm(clp, cred); | |
3309 | switch (err) { | |
3310 | case 0: | |
3311 | return err; | |
3312 | case -NFS4ERR_RESOURCE: | |
3313 | /* The IBM lawyers misread another document! */ | |
3314 | case -NFS4ERR_DELAY: | |
3315 | err = nfs4_delay(clp->cl_rpcclient, &timeout); | |
3316 | } | |
3317 | } while (err == 0); | |
3318 | return err; | |
3319 | } | |
3320 | ||
fe650407 TM |
3321 | struct nfs4_delegreturndata { |
3322 | struct nfs4_delegreturnargs args; | |
fa178f29 | 3323 | struct nfs4_delegreturnres res; |
fe650407 TM |
3324 | struct nfs_fh fh; |
3325 | nfs4_stateid stateid; | |
26e976a8 | 3326 | unsigned long timestamp; |
fa178f29 | 3327 | struct nfs_fattr fattr; |
fe650407 TM |
3328 | int rpc_status; |
3329 | }; | |
3330 | ||
fe650407 TM |
3331 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
3332 | { | |
3333 | struct nfs4_delegreturndata *data = calldata; | |
3334 | data->rpc_status = task->tk_status; | |
26e976a8 | 3335 | if (data->rpc_status == 0) |
fa178f29 | 3336 | renew_lease(data->res.server, data->timestamp); |
fe650407 TM |
3337 | } |
3338 | ||
3339 | static void nfs4_delegreturn_release(void *calldata) | |
3340 | { | |
fe650407 TM |
3341 | kfree(calldata); |
3342 | } | |
3343 | ||
c8d149f3 | 3344 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
fe650407 TM |
3345 | .rpc_call_done = nfs4_delegreturn_done, |
3346 | .rpc_release = nfs4_delegreturn_release, | |
3347 | }; | |
3348 | ||
e6f81075 | 3349 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
3350 | { |
3351 | struct nfs4_delegreturndata *data; | |
fa178f29 | 3352 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 3353 | struct rpc_task *task; |
5138fde0 TM |
3354 | struct rpc_message msg = { |
3355 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
3356 | .rpc_cred = cred, | |
3357 | }; | |
c970aa85 TM |
3358 | struct rpc_task_setup task_setup_data = { |
3359 | .rpc_client = server->client, | |
5138fde0 | 3360 | .rpc_message = &msg, |
c970aa85 TM |
3361 | .callback_ops = &nfs4_delegreturn_ops, |
3362 | .flags = RPC_TASK_ASYNC, | |
3363 | }; | |
e6f81075 | 3364 | int status = 0; |
fe650407 TM |
3365 | |
3366 | data = kmalloc(sizeof(*data), GFP_KERNEL); | |
3367 | if (data == NULL) | |
3368 | return -ENOMEM; | |
3369 | data->args.fhandle = &data->fh; | |
3370 | data->args.stateid = &data->stateid; | |
fa178f29 | 3371 | data->args.bitmask = server->attr_bitmask; |
fe650407 TM |
3372 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
3373 | memcpy(&data->stateid, stateid, sizeof(data->stateid)); | |
fa178f29 TM |
3374 | data->res.fattr = &data->fattr; |
3375 | data->res.server = server; | |
5f7dbd5c | 3376 | data->res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE; |
5138fde0 | 3377 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 3378 | data->timestamp = jiffies; |
fe650407 TM |
3379 | data->rpc_status = 0; |
3380 | ||
c970aa85 | 3381 | task_setup_data.callback_data = data; |
5138fde0 TM |
3382 | msg.rpc_argp = &data->args, |
3383 | msg.rpc_resp = &data->res, | |
c970aa85 | 3384 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 3385 | if (IS_ERR(task)) |
fe650407 | 3386 | return PTR_ERR(task); |
e6f81075 TM |
3387 | if (!issync) |
3388 | goto out; | |
fe650407 | 3389 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
3390 | if (status != 0) |
3391 | goto out; | |
3392 | status = data->rpc_status; | |
3393 | if (status != 0) | |
3394 | goto out; | |
3395 | nfs_refresh_inode(inode, &data->fattr); | |
3396 | out: | |
e6b3c4db | 3397 | rpc_put_task(task); |
fe650407 | 3398 | return status; |
1da177e4 LT |
3399 | } |
3400 | ||
e6f81075 | 3401 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
3402 | { |
3403 | struct nfs_server *server = NFS_SERVER(inode); | |
3404 | struct nfs4_exception exception = { }; | |
3405 | int err; | |
3406 | do { | |
e6f81075 | 3407 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
3408 | switch (err) { |
3409 | case -NFS4ERR_STALE_STATEID: | |
3410 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
3411 | case 0: |
3412 | return 0; | |
3413 | } | |
3414 | err = nfs4_handle_exception(server, err, &exception); | |
3415 | } while (exception.retry); | |
3416 | return err; | |
3417 | } | |
3418 | ||
3419 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
3420 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
3421 | ||
3422 | /* | |
3423 | * sleep, with exponential backoff, and retry the LOCK operation. | |
3424 | */ | |
3425 | static unsigned long | |
3426 | nfs4_set_lock_task_retry(unsigned long timeout) | |
3427 | { | |
150030b7 | 3428 | schedule_timeout_killable(timeout); |
1da177e4 LT |
3429 | timeout <<= 1; |
3430 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
3431 | return NFS4_LOCK_MAXTIMEOUT; | |
3432 | return timeout; | |
3433 | } | |
3434 | ||
1da177e4 LT |
3435 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
3436 | { | |
3437 | struct inode *inode = state->inode; | |
3438 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 3439 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 3440 | struct nfs_lockt_args arg = { |
1da177e4 | 3441 | .fh = NFS_FH(inode), |
911d1aaf | 3442 | .fl = request, |
1da177e4 | 3443 | }; |
911d1aaf TM |
3444 | struct nfs_lockt_res res = { |
3445 | .denied = request, | |
1da177e4 LT |
3446 | }; |
3447 | struct rpc_message msg = { | |
3448 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
3449 | .rpc_argp = &arg, | |
3450 | .rpc_resp = &res, | |
3451 | .rpc_cred = state->owner->so_cred, | |
3452 | }; | |
1da177e4 LT |
3453 | struct nfs4_lock_state *lsp; |
3454 | int status; | |
3455 | ||
911d1aaf | 3456 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
3457 | status = nfs4_set_lock_state(state, request); |
3458 | if (status != 0) | |
3459 | goto out; | |
3460 | lsp = request->fl_u.nfs4_fl.owner; | |
9f958ab8 | 3461 | arg.lock_owner.id = lsp->ls_id.id; |
cccef3b9 | 3462 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
911d1aaf TM |
3463 | switch (status) { |
3464 | case 0: | |
3465 | request->fl_type = F_UNLCK; | |
3466 | break; | |
3467 | case -NFS4ERR_DENIED: | |
3468 | status = 0; | |
1da177e4 | 3469 | } |
70cc6487 | 3470 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 3471 | out: |
1da177e4 LT |
3472 | return status; |
3473 | } | |
3474 | ||
3475 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3476 | { | |
3477 | struct nfs4_exception exception = { }; | |
3478 | int err; | |
3479 | ||
3480 | do { | |
3481 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
3482 | _nfs4_proc_getlk(state, cmd, request), | |
3483 | &exception); | |
3484 | } while (exception.retry); | |
3485 | return err; | |
3486 | } | |
3487 | ||
3488 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
3489 | { | |
3490 | int res = 0; | |
3491 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
3492 | case FL_POSIX: | |
3493 | res = posix_lock_file_wait(file, fl); | |
3494 | break; | |
3495 | case FL_FLOCK: | |
3496 | res = flock_lock_file_wait(file, fl); | |
3497 | break; | |
3498 | default: | |
3499 | BUG(); | |
3500 | } | |
1da177e4 LT |
3501 | return res; |
3502 | } | |
3503 | ||
faf5f49c | 3504 | struct nfs4_unlockdata { |
911d1aaf TM |
3505 | struct nfs_locku_args arg; |
3506 | struct nfs_locku_res res; | |
faf5f49c TM |
3507 | struct nfs4_lock_state *lsp; |
3508 | struct nfs_open_context *ctx; | |
911d1aaf TM |
3509 | struct file_lock fl; |
3510 | const struct nfs_server *server; | |
26e976a8 | 3511 | unsigned long timestamp; |
faf5f49c TM |
3512 | }; |
3513 | ||
911d1aaf TM |
3514 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
3515 | struct nfs_open_context *ctx, | |
3516 | struct nfs4_lock_state *lsp, | |
3517 | struct nfs_seqid *seqid) | |
3518 | { | |
3519 | struct nfs4_unlockdata *p; | |
3520 | struct inode *inode = lsp->ls_state->inode; | |
3521 | ||
3522 | p = kmalloc(sizeof(*p), GFP_KERNEL); | |
3523 | if (p == NULL) | |
3524 | return NULL; | |
3525 | p->arg.fh = NFS_FH(inode); | |
3526 | p->arg.fl = &p->fl; | |
3527 | p->arg.seqid = seqid; | |
c1d51931 | 3528 | p->res.seqid = seqid; |
5f7dbd5c | 3529 | p->res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE; |
911d1aaf TM |
3530 | p->arg.stateid = &lsp->ls_stateid; |
3531 | p->lsp = lsp; | |
3532 | atomic_inc(&lsp->ls_count); | |
3533 | /* Ensure we don't close file until we're done freeing locks! */ | |
3534 | p->ctx = get_nfs_open_context(ctx); | |
3535 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
3536 | p->server = NFS_SERVER(inode); | |
3537 | return p; | |
3538 | } | |
3539 | ||
06f814a3 | 3540 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 3541 | { |
963d8fe5 | 3542 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 3543 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
3544 | nfs4_put_lock_state(calldata->lsp); |
3545 | put_nfs_open_context(calldata->ctx); | |
3546 | kfree(calldata); | |
faf5f49c TM |
3547 | } |
3548 | ||
963d8fe5 | 3549 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 3550 | { |
963d8fe5 | 3551 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 3552 | |
06f814a3 TM |
3553 | if (RPC_ASSASSINATED(task)) |
3554 | return; | |
faf5f49c TM |
3555 | switch (task->tk_status) { |
3556 | case 0: | |
3557 | memcpy(calldata->lsp->ls_stateid.data, | |
911d1aaf | 3558 | calldata->res.stateid.data, |
faf5f49c | 3559 | sizeof(calldata->lsp->ls_stateid.data)); |
26e976a8 | 3560 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 3561 | break; |
9e33bed5 TM |
3562 | case -NFS4ERR_BAD_STATEID: |
3563 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
3564 | case -NFS4ERR_STALE_STATEID: |
3565 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
3566 | break; |
3567 | default: | |
9e33bed5 | 3568 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
faf5f49c | 3569 | rpc_restart_call(task); |
faf5f49c | 3570 | } |
faf5f49c TM |
3571 | } |
3572 | ||
4ce70ada | 3573 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 3574 | { |
4ce70ada | 3575 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 3576 | |
911d1aaf | 3577 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
3578 | return; |
3579 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
3580 | /* Note: exit _without_ running nfs4_locku_done */ |
3581 | task->tk_action = NULL; | |
faf5f49c TM |
3582 | return; |
3583 | } | |
26e976a8 | 3584 | calldata->timestamp = jiffies; |
5138fde0 | 3585 | rpc_call_start(task); |
faf5f49c TM |
3586 | } |
3587 | ||
963d8fe5 | 3588 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 3589 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 3590 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 3591 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
3592 | }; |
3593 | ||
a5d16a4d TM |
3594 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
3595 | struct nfs_open_context *ctx, | |
3596 | struct nfs4_lock_state *lsp, | |
3597 | struct nfs_seqid *seqid) | |
3598 | { | |
3599 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
3600 | struct rpc_message msg = { |
3601 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
3602 | .rpc_cred = ctx->cred, | |
3603 | }; | |
c970aa85 TM |
3604 | struct rpc_task_setup task_setup_data = { |
3605 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 3606 | .rpc_message = &msg, |
c970aa85 | 3607 | .callback_ops = &nfs4_locku_ops, |
101070ca | 3608 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
3609 | .flags = RPC_TASK_ASYNC, |
3610 | }; | |
a5d16a4d | 3611 | |
137d6aca FF |
3612 | /* Ensure this is an unlock - when canceling a lock, the |
3613 | * canceled lock is passed in, and it won't be an unlock. | |
3614 | */ | |
3615 | fl->fl_type = F_UNLCK; | |
3616 | ||
a5d16a4d TM |
3617 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
3618 | if (data == NULL) { | |
3619 | nfs_free_seqid(seqid); | |
3620 | return ERR_PTR(-ENOMEM); | |
3621 | } | |
3622 | ||
5138fde0 TM |
3623 | msg.rpc_argp = &data->arg, |
3624 | msg.rpc_resp = &data->res, | |
c970aa85 TM |
3625 | task_setup_data.callback_data = data; |
3626 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
3627 | } |
3628 | ||
faf5f49c TM |
3629 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
3630 | { | |
19e03c57 | 3631 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 3632 | struct nfs_seqid *seqid; |
1da177e4 | 3633 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
3634 | struct rpc_task *task; |
3635 | int status = 0; | |
536ff0f8 | 3636 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 3637 | |
8d0a8a9d | 3638 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
3639 | /* Unlock _before_ we do the RPC call */ |
3640 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
3641 | down_read(&nfsi->rwsem); |
3642 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
3643 | up_read(&nfsi->rwsem); | |
9b073574 | 3644 | goto out; |
19e03c57 TM |
3645 | } |
3646 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 3647 | if (status != 0) |
9b073574 TM |
3648 | goto out; |
3649 | /* Is this a delegated lock? */ | |
3650 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
3651 | goto out; | |
8d0a8a9d | 3652 | lsp = request->fl_u.nfs4_fl.owner; |
911d1aaf | 3653 | seqid = nfs_alloc_seqid(&lsp->ls_seqid); |
9b073574 | 3654 | status = -ENOMEM; |
911d1aaf | 3655 | if (seqid == NULL) |
9b073574 | 3656 | goto out; |
cd3758e3 | 3657 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
3658 | status = PTR_ERR(task); |
3659 | if (IS_ERR(task)) | |
9b073574 | 3660 | goto out; |
a5d16a4d | 3661 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 3662 | rpc_put_task(task); |
9b073574 | 3663 | out: |
536ff0f8 | 3664 | request->fl_flags = fl_flags; |
1da177e4 LT |
3665 | return status; |
3666 | } | |
3667 | ||
a5d16a4d TM |
3668 | struct nfs4_lockdata { |
3669 | struct nfs_lock_args arg; | |
3670 | struct nfs_lock_res res; | |
3671 | struct nfs4_lock_state *lsp; | |
3672 | struct nfs_open_context *ctx; | |
3673 | struct file_lock fl; | |
26e976a8 | 3674 | unsigned long timestamp; |
a5d16a4d TM |
3675 | int rpc_status; |
3676 | int cancelled; | |
3677 | }; | |
3678 | ||
3679 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
3680 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp) | |
1da177e4 | 3681 | { |
a5d16a4d TM |
3682 | struct nfs4_lockdata *p; |
3683 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 3684 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d TM |
3685 | |
3686 | p = kzalloc(sizeof(*p), GFP_KERNEL); | |
3687 | if (p == NULL) | |
3688 | return NULL; | |
3689 | ||
3690 | p->arg.fh = NFS_FH(inode); | |
3691 | p->arg.fl = &p->fl; | |
2f74c0a0 TM |
3692 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid); |
3693 | if (p->arg.open_seqid == NULL) | |
3694 | goto out_free; | |
a5d16a4d TM |
3695 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid); |
3696 | if (p->arg.lock_seqid == NULL) | |
2f74c0a0 | 3697 | goto out_free_seqid; |
a5d16a4d | 3698 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 3699 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 3700 | p->arg.lock_owner.id = lsp->ls_id.id; |
c1d51931 | 3701 | p->res.lock_seqid = p->arg.lock_seqid; |
5f7dbd5c | 3702 | p->res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE; |
a5d16a4d TM |
3703 | p->lsp = lsp; |
3704 | atomic_inc(&lsp->ls_count); | |
3705 | p->ctx = get_nfs_open_context(ctx); | |
3706 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
3707 | return p; | |
2f74c0a0 TM |
3708 | out_free_seqid: |
3709 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
3710 | out_free: |
3711 | kfree(p); | |
3712 | return NULL; | |
3713 | } | |
3714 | ||
3715 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
3716 | { | |
3717 | struct nfs4_lockdata *data = calldata; | |
3718 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 3719 | |
3110ff80 | 3720 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
3721 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
3722 | return; | |
a5d16a4d TM |
3723 | /* Do we need to do an open_to_lock_owner? */ |
3724 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
3725 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
3726 | return; | |
a5d16a4d TM |
3727 | data->arg.open_stateid = &state->stateid; |
3728 | data->arg.new_lock_owner = 1; | |
c1d51931 | 3729 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
3730 | } else |
3731 | data->arg.new_lock_owner = 0; | |
26e976a8 | 3732 | data->timestamp = jiffies; |
5138fde0 | 3733 | rpc_call_start(task); |
3110ff80 | 3734 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
a5d16a4d TM |
3735 | } |
3736 | ||
3737 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) | |
3738 | { | |
3739 | struct nfs4_lockdata *data = calldata; | |
3740 | ||
3110ff80 | 3741 | dprintk("%s: begin!\n", __func__); |
a5d16a4d TM |
3742 | |
3743 | data->rpc_status = task->tk_status; | |
3744 | if (RPC_ASSASSINATED(task)) | |
3745 | goto out; | |
3746 | if (data->arg.new_lock_owner != 0) { | |
a5d16a4d TM |
3747 | if (data->rpc_status == 0) |
3748 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
3749 | else | |
3750 | goto out; | |
3751 | } | |
3752 | if (data->rpc_status == 0) { | |
3753 | memcpy(data->lsp->ls_stateid.data, data->res.stateid.data, | |
3754 | sizeof(data->lsp->ls_stateid.data)); | |
3755 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; | |
88be9f99 | 3756 | renew_lease(NFS_SERVER(data->ctx->path.dentry->d_inode), data->timestamp); |
a5d16a4d | 3757 | } |
a5d16a4d | 3758 | out: |
3110ff80 | 3759 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
3760 | } |
3761 | ||
3762 | static void nfs4_lock_release(void *calldata) | |
3763 | { | |
3764 | struct nfs4_lockdata *data = calldata; | |
3765 | ||
3110ff80 | 3766 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 3767 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
3768 | if (data->cancelled != 0) { |
3769 | struct rpc_task *task; | |
3770 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
3771 | data->arg.lock_seqid); | |
3772 | if (!IS_ERR(task)) | |
e6b3c4db | 3773 | rpc_put_task(task); |
3110ff80 | 3774 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
3775 | } else |
3776 | nfs_free_seqid(data->arg.lock_seqid); | |
3777 | nfs4_put_lock_state(data->lsp); | |
3778 | put_nfs_open_context(data->ctx); | |
3779 | kfree(data); | |
3110ff80 | 3780 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
3781 | } |
3782 | ||
3783 | static const struct rpc_call_ops nfs4_lock_ops = { | |
3784 | .rpc_call_prepare = nfs4_lock_prepare, | |
3785 | .rpc_call_done = nfs4_lock_done, | |
3786 | .rpc_release = nfs4_lock_release, | |
3787 | }; | |
3788 | ||
3789 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int reclaim) | |
3790 | { | |
3791 | struct nfs4_lockdata *data; | |
3792 | struct rpc_task *task; | |
5138fde0 TM |
3793 | struct rpc_message msg = { |
3794 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
3795 | .rpc_cred = state->owner->so_cred, | |
3796 | }; | |
c970aa85 TM |
3797 | struct rpc_task_setup task_setup_data = { |
3798 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 3799 | .rpc_message = &msg, |
c970aa85 | 3800 | .callback_ops = &nfs4_lock_ops, |
101070ca | 3801 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
3802 | .flags = RPC_TASK_ASYNC, |
3803 | }; | |
a5d16a4d TM |
3804 | int ret; |
3805 | ||
3110ff80 | 3806 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 3807 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
a5d16a4d TM |
3808 | fl->fl_u.nfs4_fl.owner); |
3809 | if (data == NULL) | |
3810 | return -ENOMEM; | |
3811 | if (IS_SETLKW(cmd)) | |
3812 | data->arg.block = 1; | |
3813 | if (reclaim != 0) | |
3814 | data->arg.reclaim = 1; | |
5138fde0 TM |
3815 | msg.rpc_argp = &data->arg, |
3816 | msg.rpc_resp = &data->res, | |
c970aa85 TM |
3817 | task_setup_data.callback_data = data; |
3818 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 3819 | if (IS_ERR(task)) |
a5d16a4d | 3820 | return PTR_ERR(task); |
a5d16a4d TM |
3821 | ret = nfs4_wait_for_completion_rpc_task(task); |
3822 | if (ret == 0) { | |
3823 | ret = data->rpc_status; | |
3824 | if (ret == -NFS4ERR_DENIED) | |
3825 | ret = -EAGAIN; | |
3826 | } else | |
3827 | data->cancelled = 1; | |
e6b3c4db | 3828 | rpc_put_task(task); |
3110ff80 | 3829 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 3830 | return ret; |
1da177e4 LT |
3831 | } |
3832 | ||
3833 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
3834 | { | |
202b50dc TM |
3835 | struct nfs_server *server = NFS_SERVER(state->inode); |
3836 | struct nfs4_exception exception = { }; | |
3837 | int err; | |
3838 | ||
3839 | do { | |
42a2d13e TM |
3840 | /* Cache the lock if possible... */ |
3841 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
3842 | return 0; | |
202b50dc TM |
3843 | err = _nfs4_do_setlk(state, F_SETLK, request, 1); |
3844 | if (err != -NFS4ERR_DELAY) | |
3845 | break; | |
3846 | nfs4_handle_exception(server, err, &exception); | |
3847 | } while (exception.retry); | |
3848 | return err; | |
1da177e4 LT |
3849 | } |
3850 | ||
3851 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
3852 | { | |
202b50dc TM |
3853 | struct nfs_server *server = NFS_SERVER(state->inode); |
3854 | struct nfs4_exception exception = { }; | |
3855 | int err; | |
3856 | ||
6bfc93ef TM |
3857 | err = nfs4_set_lock_state(state, request); |
3858 | if (err != 0) | |
3859 | return err; | |
202b50dc | 3860 | do { |
42a2d13e TM |
3861 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
3862 | return 0; | |
202b50dc TM |
3863 | err = _nfs4_do_setlk(state, F_SETLK, request, 0); |
3864 | if (err != -NFS4ERR_DELAY) | |
3865 | break; | |
3866 | nfs4_handle_exception(server, err, &exception); | |
3867 | } while (exception.retry); | |
3868 | return err; | |
1da177e4 LT |
3869 | } |
3870 | ||
3871 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3872 | { | |
19e03c57 | 3873 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 3874 | unsigned char fl_flags = request->fl_flags; |
1da177e4 LT |
3875 | int status; |
3876 | ||
6bfc93ef | 3877 | /* Is this a delegated open? */ |
6bfc93ef TM |
3878 | status = nfs4_set_lock_state(state, request); |
3879 | if (status != 0) | |
3880 | goto out; | |
01c3b861 TM |
3881 | request->fl_flags |= FL_ACCESS; |
3882 | status = do_vfs_lock(request->fl_file, request); | |
3883 | if (status < 0) | |
3884 | goto out; | |
19e03c57 | 3885 | down_read(&nfsi->rwsem); |
01c3b861 | 3886 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 3887 | /* Yes: cache locks! */ |
01c3b861 | 3888 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
3889 | request->fl_flags = fl_flags & ~FL_SLEEP; |
3890 | status = do_vfs_lock(request->fl_file, request); | |
3891 | goto out_unlock; | |
01c3b861 | 3892 | } |
6bfc93ef TM |
3893 | status = _nfs4_do_setlk(state, cmd, request, 0); |
3894 | if (status != 0) | |
01c3b861 | 3895 | goto out_unlock; |
6bfc93ef | 3896 | /* Note: we always want to sleep here! */ |
01c3b861 | 3897 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 3898 | if (do_vfs_lock(request->fl_file, request) < 0) |
3110ff80 | 3899 | printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __func__); |
01c3b861 | 3900 | out_unlock: |
19e03c57 | 3901 | up_read(&nfsi->rwsem); |
01c3b861 TM |
3902 | out: |
3903 | request->fl_flags = fl_flags; | |
1da177e4 LT |
3904 | return status; |
3905 | } | |
3906 | ||
3907 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3908 | { | |
3909 | struct nfs4_exception exception = { }; | |
3910 | int err; | |
3911 | ||
3912 | do { | |
3913 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
3914 | _nfs4_proc_setlk(state, cmd, request), | |
3915 | &exception); | |
3916 | } while (exception.retry); | |
3917 | return err; | |
3918 | } | |
3919 | ||
3920 | static int | |
3921 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
3922 | { | |
3923 | struct nfs_open_context *ctx; | |
3924 | struct nfs4_state *state; | |
3925 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
3926 | int status; | |
3927 | ||
3928 | /* verify open state */ | |
cd3758e3 | 3929 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
3930 | state = ctx->state; |
3931 | ||
3932 | if (request->fl_start < 0 || request->fl_end < 0) | |
3933 | return -EINVAL; | |
3934 | ||
3935 | if (IS_GETLK(cmd)) | |
3936 | return nfs4_proc_getlk(state, F_GETLK, request); | |
3937 | ||
3938 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
3939 | return -EINVAL; | |
3940 | ||
3941 | if (request->fl_type == F_UNLCK) | |
3942 | return nfs4_proc_unlck(state, cmd, request); | |
3943 | ||
3944 | do { | |
3945 | status = nfs4_proc_setlk(state, cmd, request); | |
3946 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
3947 | break; | |
3948 | timeout = nfs4_set_lock_task_retry(timeout); | |
3949 | status = -ERESTARTSYS; | |
3950 | if (signalled()) | |
3951 | break; | |
3952 | } while(status < 0); | |
1da177e4 LT |
3953 | return status; |
3954 | } | |
3955 | ||
888e694c TM |
3956 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
3957 | { | |
3958 | struct nfs_server *server = NFS_SERVER(state->inode); | |
3959 | struct nfs4_exception exception = { }; | |
3960 | int err; | |
3961 | ||
3962 | err = nfs4_set_lock_state(state, fl); | |
3963 | if (err != 0) | |
3964 | goto out; | |
3965 | do { | |
3966 | err = _nfs4_do_setlk(state, F_SETLK, fl, 0); | |
3967 | if (err != -NFS4ERR_DELAY) | |
3968 | break; | |
3969 | err = nfs4_handle_exception(server, err, &exception); | |
3970 | } while (exception.retry); | |
3971 | out: | |
3972 | return err; | |
3973 | } | |
6b3b5496 | 3974 | |
aa1870af BF |
3975 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
3976 | ||
6b3b5496 BF |
3977 | int nfs4_setxattr(struct dentry *dentry, const char *key, const void *buf, |
3978 | size_t buflen, int flags) | |
3979 | { | |
4b580ee3 BF |
3980 | struct inode *inode = dentry->d_inode; |
3981 | ||
3982 | if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0) | |
3983 | return -EOPNOTSUPP; | |
3984 | ||
4b580ee3 | 3985 | return nfs4_proc_set_acl(inode, buf, buflen); |
6b3b5496 BF |
3986 | } |
3987 | ||
3988 | /* The getxattr man page suggests returning -ENODATA for unknown attributes, | |
3989 | * and that's what we'll do for e.g. user attributes that haven't been set. | |
3990 | * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported | |
3991 | * attributes in kernel-managed attribute namespaces. */ | |
3992 | ssize_t nfs4_getxattr(struct dentry *dentry, const char *key, void *buf, | |
3993 | size_t buflen) | |
3994 | { | |
aa1870af BF |
3995 | struct inode *inode = dentry->d_inode; |
3996 | ||
3997 | if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0) | |
3998 | return -EOPNOTSUPP; | |
3999 | ||
4000 | return nfs4_proc_get_acl(inode, buf, buflen); | |
6b3b5496 BF |
4001 | } |
4002 | ||
4003 | ssize_t nfs4_listxattr(struct dentry *dentry, char *buf, size_t buflen) | |
4004 | { | |
aa1870af | 4005 | size_t len = strlen(XATTR_NAME_NFSV4_ACL) + 1; |
6b3b5496 | 4006 | |
096455a2 BF |
4007 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
4008 | return 0; | |
6b3b5496 BF |
4009 | if (buf && buflen < len) |
4010 | return -ERANGE; | |
4011 | if (buf) | |
aa1870af BF |
4012 | memcpy(buf, XATTR_NAME_NFSV4_ACL, len); |
4013 | return len; | |
6b3b5496 BF |
4014 | } |
4015 | ||
69aaaae1 TM |
4016 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
4017 | { | |
4018 | if (!((fattr->valid & NFS_ATTR_FATTR_FILEID) && | |
4019 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
4020 | (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL))) | |
4021 | return; | |
4022 | ||
4023 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
4024 | NFS_ATTR_FATTR_NLINK; | |
4025 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; | |
4026 | fattr->nlink = 2; | |
4027 | } | |
4028 | ||
56659e99 | 4029 | int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, |
7aaa0b3b | 4030 | struct nfs4_fs_locations *fs_locations, struct page *page) |
683b57b4 TM |
4031 | { |
4032 | struct nfs_server *server = NFS_SERVER(dir); | |
4033 | u32 bitmask[2] = { | |
361e624f MN |
4034 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
4035 | [1] = FATTR4_WORD1_MOUNTED_ON_FILEID, | |
683b57b4 TM |
4036 | }; |
4037 | struct nfs4_fs_locations_arg args = { | |
4038 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 4039 | .name = name, |
683b57b4 TM |
4040 | .page = page, |
4041 | .bitmask = bitmask, | |
4042 | }; | |
22958463 BH |
4043 | struct nfs4_fs_locations_res res = { |
4044 | .fs_locations = fs_locations, | |
4045 | }; | |
683b57b4 TM |
4046 | struct rpc_message msg = { |
4047 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
4048 | .rpc_argp = &args, | |
22958463 | 4049 | .rpc_resp = &res, |
683b57b4 TM |
4050 | }; |
4051 | int status; | |
4052 | ||
3110ff80 | 4053 | dprintk("%s: start\n", __func__); |
c228fd3a | 4054 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 4055 | fs_locations->server = server; |
830b8e33 | 4056 | fs_locations->nlocations = 0; |
cccef3b9 | 4057 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
69aaaae1 | 4058 | nfs_fixup_referral_attributes(&fs_locations->fattr); |
3110ff80 | 4059 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
4060 | return status; |
4061 | } | |
4062 | ||
557134a3 AA |
4063 | #ifdef CONFIG_NFS_V4_1 |
4064 | /* Destroy the slot table */ | |
4065 | static void nfs4_destroy_slot_table(struct nfs4_session *session) | |
4066 | { | |
4067 | if (session->fc_slot_table.slots == NULL) | |
4068 | return; | |
4069 | kfree(session->fc_slot_table.slots); | |
4070 | session->fc_slot_table.slots = NULL; | |
4071 | return; | |
4072 | } | |
4073 | ||
4074 | struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) | |
4075 | { | |
4076 | struct nfs4_session *session; | |
4077 | struct nfs4_slot_table *tbl; | |
4078 | ||
4079 | session = kzalloc(sizeof(struct nfs4_session), GFP_KERNEL); | |
4080 | if (!session) | |
4081 | return NULL; | |
4082 | tbl = &session->fc_slot_table; | |
4083 | spin_lock_init(&tbl->slot_tbl_lock); | |
4084 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "Slot table"); | |
4085 | session->clp = clp; | |
4086 | return session; | |
4087 | } | |
4088 | ||
4089 | void nfs4_destroy_session(struct nfs4_session *session) | |
4090 | { | |
4091 | nfs4_destroy_slot_table(session); | |
4092 | kfree(session); | |
4093 | } | |
4094 | ||
4095 | #endif /* CONFIG_NFS_V4_1 */ | |
4096 | ||
1da177e4 | 4097 | struct nfs4_state_recovery_ops nfs4_reboot_recovery_ops = { |
7eff03ae | 4098 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 4099 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
4100 | .recover_open = nfs4_open_reclaim, |
4101 | .recover_lock = nfs4_lock_reclaim, | |
4102 | }; | |
4103 | ||
b79a4a1b | 4104 | struct nfs4_state_recovery_ops nfs4_nograce_recovery_ops = { |
7eff03ae | 4105 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 4106 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
1da177e4 LT |
4107 | .recover_open = nfs4_open_expired, |
4108 | .recover_lock = nfs4_lock_expired, | |
4109 | }; | |
4110 | ||
92e1d5be | 4111 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
4112 | .permission = nfs_permission, |
4113 | .getattr = nfs_getattr, | |
4114 | .setattr = nfs_setattr, | |
4115 | .getxattr = nfs4_getxattr, | |
4116 | .setxattr = nfs4_setxattr, | |
4117 | .listxattr = nfs4_listxattr, | |
4118 | }; | |
4119 | ||
509de811 | 4120 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
4121 | .version = 4, /* protocol version */ |
4122 | .dentry_ops = &nfs4_dentry_operations, | |
4123 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 4124 | .file_inode_ops = &nfs4_file_inode_operations, |
1da177e4 LT |
4125 | .getroot = nfs4_proc_get_root, |
4126 | .getattr = nfs4_proc_getattr, | |
4127 | .setattr = nfs4_proc_setattr, | |
2b3de441 | 4128 | .lookupfh = nfs4_proc_lookupfh, |
1da177e4 LT |
4129 | .lookup = nfs4_proc_lookup, |
4130 | .access = nfs4_proc_access, | |
4131 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
4132 | .create = nfs4_proc_create, |
4133 | .remove = nfs4_proc_remove, | |
4134 | .unlink_setup = nfs4_proc_unlink_setup, | |
4135 | .unlink_done = nfs4_proc_unlink_done, | |
4136 | .rename = nfs4_proc_rename, | |
4137 | .link = nfs4_proc_link, | |
4138 | .symlink = nfs4_proc_symlink, | |
4139 | .mkdir = nfs4_proc_mkdir, | |
4140 | .rmdir = nfs4_proc_remove, | |
4141 | .readdir = nfs4_proc_readdir, | |
4142 | .mknod = nfs4_proc_mknod, | |
4143 | .statfs = nfs4_proc_statfs, | |
4144 | .fsinfo = nfs4_proc_fsinfo, | |
4145 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 4146 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
4147 | .decode_dirent = nfs4_decode_dirent, |
4148 | .read_setup = nfs4_proc_read_setup, | |
ec06c096 | 4149 | .read_done = nfs4_read_done, |
1da177e4 | 4150 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 4151 | .write_done = nfs4_write_done, |
1da177e4 | 4152 | .commit_setup = nfs4_proc_commit_setup, |
788e7a89 | 4153 | .commit_done = nfs4_commit_done, |
1da177e4 | 4154 | .lock = nfs4_proc_lock, |
e50a1c2e | 4155 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 4156 | .close_context = nfs4_close_context, |
1da177e4 LT |
4157 | }; |
4158 | ||
4159 | /* | |
4160 | * Local variables: | |
4161 | * c-basic-offset: 8 | |
4162 | * End: | |
4163 | */ |