]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4proc.c | |
3 | * | |
4 | * Client-side procedure declarations for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/mm.h> | |
1da177e4 LT |
39 | #include <linux/delay.h> |
40 | #include <linux/errno.h> | |
41 | #include <linux/string.h> | |
42 | #include <linux/sunrpc/clnt.h> | |
43 | #include <linux/nfs.h> | |
44 | #include <linux/nfs4.h> | |
45 | #include <linux/nfs_fs.h> | |
46 | #include <linux/nfs_page.h> | |
1da177e4 | 47 | #include <linux/namei.h> |
02a913a7 | 48 | #include <linux/mount.h> |
99fe60d0 | 49 | #include <linux/module.h> |
5a0ffe54 | 50 | #include <linux/sunrpc/bc_xprt.h> |
1da177e4 | 51 | |
4ce79717 | 52 | #include "nfs4_fs.h" |
1da177e4 | 53 | #include "delegation.h" |
101070ca | 54 | #include "internal.h" |
006ea73e | 55 | #include "iostat.h" |
fc931582 | 56 | #include "callback.h" |
1da177e4 LT |
57 | |
58 | #define NFSDBG_FACILITY NFSDBG_PROC | |
59 | ||
2066fe89 | 60 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
61 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
62 | ||
a78cb57a TM |
63 | #define NFS4_MAX_LOOP_ON_RECOVER (10) |
64 | ||
cdd4e68b | 65 | struct nfs4_opendata; |
864472e9 | 66 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
1da177e4 | 67 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
9e33bed5 | 68 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); |
9936781d TM |
69 | static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr); |
70 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); | |
1da177e4 | 71 | |
1da177e4 | 72 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 73 | static int nfs4_map_errors(int err) |
1da177e4 | 74 | { |
52567b03 TM |
75 | if (err >= -1000) |
76 | return err; | |
77 | switch (err) { | |
78 | case -NFS4ERR_RESOURCE: | |
79 | return -EREMOTEIO; | |
80 | default: | |
1da177e4 | 81 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 82 | __func__, -err); |
52567b03 | 83 | break; |
1da177e4 | 84 | } |
52567b03 | 85 | return -EIO; |
1da177e4 LT |
86 | } |
87 | ||
88 | /* | |
89 | * This is our standard bitmap for GETATTR requests. | |
90 | */ | |
91 | const u32 nfs4_fattr_bitmap[2] = { | |
92 | FATTR4_WORD0_TYPE | |
93 | | FATTR4_WORD0_CHANGE | |
94 | | FATTR4_WORD0_SIZE | |
95 | | FATTR4_WORD0_FSID | |
96 | | FATTR4_WORD0_FILEID, | |
97 | FATTR4_WORD1_MODE | |
98 | | FATTR4_WORD1_NUMLINKS | |
99 | | FATTR4_WORD1_OWNER | |
100 | | FATTR4_WORD1_OWNER_GROUP | |
101 | | FATTR4_WORD1_RAWDEV | |
102 | | FATTR4_WORD1_SPACE_USED | |
103 | | FATTR4_WORD1_TIME_ACCESS | |
104 | | FATTR4_WORD1_TIME_METADATA | |
105 | | FATTR4_WORD1_TIME_MODIFY | |
106 | }; | |
107 | ||
108 | const u32 nfs4_statfs_bitmap[2] = { | |
109 | FATTR4_WORD0_FILES_AVAIL | |
110 | | FATTR4_WORD0_FILES_FREE | |
111 | | FATTR4_WORD0_FILES_TOTAL, | |
112 | FATTR4_WORD1_SPACE_AVAIL | |
113 | | FATTR4_WORD1_SPACE_FREE | |
114 | | FATTR4_WORD1_SPACE_TOTAL | |
115 | }; | |
116 | ||
4ce79717 | 117 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
118 | FATTR4_WORD0_MAXLINK |
119 | | FATTR4_WORD0_MAXNAME, | |
120 | 0 | |
121 | }; | |
122 | ||
123 | const u32 nfs4_fsinfo_bitmap[2] = { FATTR4_WORD0_MAXFILESIZE | |
124 | | FATTR4_WORD0_MAXREAD | |
125 | | FATTR4_WORD0_MAXWRITE | |
126 | | FATTR4_WORD0_LEASE_TIME, | |
127 | 0 | |
128 | }; | |
129 | ||
830b8e33 MN |
130 | const u32 nfs4_fs_locations_bitmap[2] = { |
131 | FATTR4_WORD0_TYPE | |
132 | | FATTR4_WORD0_CHANGE | |
133 | | FATTR4_WORD0_SIZE | |
134 | | FATTR4_WORD0_FSID | |
135 | | FATTR4_WORD0_FILEID | |
136 | | FATTR4_WORD0_FS_LOCATIONS, | |
137 | FATTR4_WORD1_MODE | |
138 | | FATTR4_WORD1_NUMLINKS | |
139 | | FATTR4_WORD1_OWNER | |
140 | | FATTR4_WORD1_OWNER_GROUP | |
141 | | FATTR4_WORD1_RAWDEV | |
142 | | FATTR4_WORD1_SPACE_USED | |
143 | | FATTR4_WORD1_TIME_ACCESS | |
144 | | FATTR4_WORD1_TIME_METADATA | |
145 | | FATTR4_WORD1_TIME_MODIFY | |
146 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
147 | }; | |
148 | ||
bc4785cd | 149 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
150 | struct nfs4_readdir_arg *readdir) |
151 | { | |
0dbb4c67 | 152 | __be32 *start, *p; |
1da177e4 LT |
153 | |
154 | BUG_ON(readdir->count < 80); | |
155 | if (cookie > 2) { | |
b7ef1956 | 156 | readdir->cookie = cookie; |
1da177e4 LT |
157 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
158 | return; | |
159 | } | |
160 | ||
161 | readdir->cookie = 0; | |
162 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
163 | if (cookie == 2) | |
164 | return; | |
165 | ||
166 | /* | |
167 | * NFSv4 servers do not return entries for '.' and '..' | |
168 | * Therefore, we fake these entries here. We let '.' | |
169 | * have cookie 0 and '..' have cookie 1. Note that | |
170 | * when talking to the server, we always send cookie 0 | |
171 | * instead of 1 or 2. | |
172 | */ | |
0dbb4c67 | 173 | start = p = kmap_atomic(*readdir->pages, KM_USER0); |
1da177e4 LT |
174 | |
175 | if (cookie == 0) { | |
176 | *p++ = xdr_one; /* next */ | |
177 | *p++ = xdr_zero; /* cookie, first word */ | |
178 | *p++ = xdr_one; /* cookie, second word */ | |
179 | *p++ = xdr_one; /* entry len */ | |
180 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
181 | p++; | |
182 | *p++ = xdr_one; /* bitmap length */ | |
183 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
184 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 185 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
186 | } |
187 | ||
188 | *p++ = xdr_one; /* next */ | |
189 | *p++ = xdr_zero; /* cookie, first word */ | |
190 | *p++ = xdr_two; /* cookie, second word */ | |
191 | *p++ = xdr_two; /* entry len */ | |
192 | memcpy(p, "..\0\0", 4); /* entry */ | |
193 | p++; | |
194 | *p++ = xdr_one; /* bitmap length */ | |
195 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
196 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 197 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
198 | |
199 | readdir->pgbase = (char *)p - (char *)start; | |
200 | readdir->count -= readdir->pgbase; | |
201 | kunmap_atomic(start, KM_USER0); | |
202 | } | |
203 | ||
65de872e TM |
204 | static int nfs4_wait_clnt_recover(struct nfs_client *clp) |
205 | { | |
206 | int res; | |
207 | ||
208 | might_sleep(); | |
209 | ||
e005e804 | 210 | res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING, |
72cb77f4 | 211 | nfs_wait_bit_killable, TASK_KILLABLE); |
65de872e TM |
212 | return res; |
213 | } | |
214 | ||
215 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) | |
216 | { | |
217 | int res = 0; | |
218 | ||
219 | might_sleep(); | |
220 | ||
221 | if (*timeout <= 0) | |
222 | *timeout = NFS4_POLL_RETRY_MIN; | |
223 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
224 | *timeout = NFS4_POLL_RETRY_MAX; | |
225 | schedule_timeout_killable(*timeout); | |
226 | if (fatal_signal_pending(current)) | |
227 | res = -ERESTARTSYS; | |
228 | *timeout <<= 1; | |
229 | return res; | |
230 | } | |
231 | ||
232 | /* This is the error handling routine for processes that are allowed | |
233 | * to sleep. | |
234 | */ | |
235 | static int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception) | |
236 | { | |
237 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 238 | struct nfs4_state *state = exception->state; |
65de872e TM |
239 | int ret = errorcode; |
240 | ||
241 | exception->retry = 0; | |
242 | switch(errorcode) { | |
243 | case 0: | |
244 | return 0; | |
9e33bed5 TM |
245 | case -NFS4ERR_ADMIN_REVOKED: |
246 | case -NFS4ERR_BAD_STATEID: | |
247 | case -NFS4ERR_OPENMODE: | |
248 | if (state == NULL) | |
249 | break; | |
250 | nfs4_state_mark_reclaim_nograce(clp, state); | |
65de872e TM |
251 | case -NFS4ERR_STALE_CLIENTID: |
252 | case -NFS4ERR_STALE_STATEID: | |
253 | case -NFS4ERR_EXPIRED: | |
254 | nfs4_schedule_state_recovery(clp); | |
255 | ret = nfs4_wait_clnt_recover(clp); | |
256 | if (ret == 0) | |
257 | exception->retry = 1; | |
4745e315 | 258 | #if !defined(CONFIG_NFS_V4_1) |
65de872e | 259 | break; |
4745e315 AA |
260 | #else /* !defined(CONFIG_NFS_V4_1) */ |
261 | if (!nfs4_has_session(server->nfs_client)) | |
262 | break; | |
263 | /* FALLTHROUGH */ | |
264 | case -NFS4ERR_BADSESSION: | |
265 | case -NFS4ERR_BADSLOT: | |
266 | case -NFS4ERR_BAD_HIGH_SLOT: | |
267 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
268 | case -NFS4ERR_DEADSESSION: | |
269 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
270 | case -NFS4ERR_SEQ_MISORDERED: | |
271 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
272 | errorcode); | |
273 | set_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state); | |
274 | exception->retry = 1; | |
275 | /* FALLTHROUGH */ | |
276 | #endif /* !defined(CONFIG_NFS_V4_1) */ | |
65de872e | 277 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
278 | if (exception->timeout > HZ) { |
279 | /* We have retried a decent amount, time to | |
280 | * fail | |
281 | */ | |
282 | ret = -EBUSY; | |
283 | break; | |
284 | } | |
65de872e TM |
285 | case -NFS4ERR_GRACE: |
286 | case -NFS4ERR_DELAY: | |
287 | ret = nfs4_delay(server->client, &exception->timeout); | |
288 | if (ret != 0) | |
289 | break; | |
290 | case -NFS4ERR_OLD_STATEID: | |
291 | exception->retry = 1; | |
292 | } | |
293 | /* We failed to handle the error */ | |
294 | return nfs4_map_errors(ret); | |
295 | } | |
296 | ||
297 | ||
26e976a8 | 298 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
1da177e4 | 299 | { |
7539bbab | 300 | struct nfs_client *clp = server->nfs_client; |
1da177e4 LT |
301 | spin_lock(&clp->cl_lock); |
302 | if (time_before(clp->cl_last_renewal,timestamp)) | |
303 | clp->cl_last_renewal = timestamp; | |
304 | spin_unlock(&clp->cl_lock); | |
305 | } | |
306 | ||
cccef3b9 AA |
307 | #if defined(CONFIG_NFS_V4_1) |
308 | ||
e2c4ab3c AA |
309 | /* |
310 | * nfs4_free_slot - free a slot and efficiently update slot table. | |
311 | * | |
312 | * freeing a slot is trivially done by clearing its respective bit | |
313 | * in the bitmap. | |
314 | * If the freed slotid equals highest_used_slotid we want to update it | |
315 | * so that the server would be able to size down the slot table if needed, | |
316 | * otherwise we know that the highest_used_slotid is still in use. | |
317 | * When updating highest_used_slotid there may be "holes" in the bitmap | |
318 | * so we need to scan down from highest_used_slotid to 0 looking for the now | |
319 | * highest slotid in use. | |
320 | * If none found, highest_used_slotid is set to -1. | |
321 | */ | |
322 | static void | |
323 | nfs4_free_slot(struct nfs4_slot_table *tbl, u8 free_slotid) | |
324 | { | |
325 | int slotid = free_slotid; | |
326 | ||
327 | spin_lock(&tbl->slot_tbl_lock); | |
328 | /* clear used bit in bitmap */ | |
329 | __clear_bit(slotid, tbl->used_slots); | |
330 | ||
331 | /* update highest_used_slotid when it is freed */ | |
332 | if (slotid == tbl->highest_used_slotid) { | |
333 | slotid = find_last_bit(tbl->used_slots, tbl->max_slots); | |
334 | if (slotid >= 0 && slotid < tbl->max_slots) | |
335 | tbl->highest_used_slotid = slotid; | |
336 | else | |
337 | tbl->highest_used_slotid = -1; | |
338 | } | |
339 | rpc_wake_up_next(&tbl->slot_tbl_waitq); | |
340 | spin_unlock(&tbl->slot_tbl_lock); | |
341 | dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__, | |
342 | free_slotid, tbl->highest_used_slotid); | |
343 | } | |
344 | ||
13615871 AA |
345 | void nfs41_sequence_free_slot(const struct nfs_client *clp, |
346 | struct nfs4_sequence_res *res) | |
347 | { | |
348 | struct nfs4_slot_table *tbl; | |
349 | ||
350 | if (!nfs4_has_session(clp)) { | |
351 | dprintk("%s: No session\n", __func__); | |
352 | return; | |
353 | } | |
354 | tbl = &clp->cl_session->fc_slot_table; | |
355 | if (res->sr_slotid == NFS4_MAX_SLOT_TABLE) { | |
356 | dprintk("%s: No slot\n", __func__); | |
357 | /* just wake up the next guy waiting since | |
358 | * we may have not consumed a slot after all */ | |
359 | rpc_wake_up_next(&tbl->slot_tbl_waitq); | |
360 | return; | |
361 | } | |
362 | nfs4_free_slot(tbl, res->sr_slotid); | |
363 | res->sr_slotid = NFS4_MAX_SLOT_TABLE; | |
364 | } | |
365 | ||
b0df806c AA |
366 | static void nfs41_sequence_done(struct nfs_client *clp, |
367 | struct nfs4_sequence_res *res, | |
368 | int rpc_status) | |
369 | { | |
370 | unsigned long timestamp; | |
371 | struct nfs4_slot_table *tbl; | |
372 | struct nfs4_slot *slot; | |
373 | ||
374 | /* | |
375 | * sr_status remains 1 if an RPC level error occurred. The server | |
376 | * may or may not have processed the sequence operation.. | |
377 | * Proceed as if the server received and processed the sequence | |
378 | * operation. | |
379 | */ | |
380 | if (res->sr_status == 1) | |
381 | res->sr_status = NFS_OK; | |
382 | ||
383 | /* -ERESTARTSYS can result in skipping nfs41_sequence_setup */ | |
384 | if (res->sr_slotid == NFS4_MAX_SLOT_TABLE) | |
385 | goto out; | |
386 | ||
387 | tbl = &clp->cl_session->fc_slot_table; | |
388 | slot = tbl->slots + res->sr_slotid; | |
389 | ||
390 | if (res->sr_status == 0) { | |
391 | /* Update the slot's sequence and clientid lease timer */ | |
392 | ++slot->seq_nr; | |
393 | timestamp = res->sr_renewal_time; | |
394 | spin_lock(&clp->cl_lock); | |
395 | if (time_before(clp->cl_last_renewal, timestamp)) | |
396 | clp->cl_last_renewal = timestamp; | |
397 | spin_unlock(&clp->cl_lock); | |
398 | return; | |
399 | } | |
400 | out: | |
401 | /* The session may be reset by one of the error handlers. */ | |
402 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
403 | nfs41_sequence_free_slot(clp, res); | |
404 | } | |
405 | ||
510b8175 BH |
406 | /* |
407 | * nfs4_find_slot - efficiently look for a free slot | |
408 | * | |
409 | * nfs4_find_slot looks for an unset bit in the used_slots bitmap. | |
410 | * If found, we mark the slot as used, update the highest_used_slotid, | |
411 | * and respectively set up the sequence operation args. | |
412 | * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise. | |
fbcd4abc AA |
413 | * |
414 | * Note: must be called with under the slot_tbl_lock. | |
510b8175 BH |
415 | */ |
416 | static u8 | |
417 | nfs4_find_slot(struct nfs4_slot_table *tbl, struct rpc_task *task) | |
418 | { | |
419 | int slotid; | |
420 | u8 ret_id = NFS4_MAX_SLOT_TABLE; | |
421 | BUILD_BUG_ON((u8)NFS4_MAX_SLOT_TABLE != (int)NFS4_MAX_SLOT_TABLE); | |
422 | ||
510b8175 BH |
423 | dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n", |
424 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, | |
425 | tbl->max_slots); | |
426 | slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots); | |
427 | if (slotid >= tbl->max_slots) | |
428 | goto out; | |
429 | __set_bit(slotid, tbl->used_slots); | |
430 | if (slotid > tbl->highest_used_slotid) | |
431 | tbl->highest_used_slotid = slotid; | |
432 | ret_id = slotid; | |
433 | out: | |
434 | dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n", | |
435 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, ret_id); | |
510b8175 BH |
436 | return ret_id; |
437 | } | |
438 | ||
b069d94a AA |
439 | static int nfs4_recover_session(struct nfs4_session *session) |
440 | { | |
441 | struct nfs_client *clp = session->clp; | |
a78cb57a | 442 | unsigned int loop; |
b069d94a AA |
443 | int ret; |
444 | ||
a78cb57a | 445 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { |
b069d94a AA |
446 | ret = nfs4_wait_clnt_recover(clp); |
447 | if (ret != 0) | |
a78cb57a | 448 | break; |
b069d94a AA |
449 | if (!test_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state)) |
450 | break; | |
451 | nfs4_schedule_state_manager(clp); | |
a78cb57a | 452 | ret = -EIO; |
b069d94a | 453 | } |
a78cb57a | 454 | return ret; |
b069d94a AA |
455 | } |
456 | ||
ce5039c1 AA |
457 | static int nfs41_setup_sequence(struct nfs4_session *session, |
458 | struct nfs4_sequence_args *args, | |
459 | struct nfs4_sequence_res *res, | |
460 | int cache_reply, | |
461 | struct rpc_task *task) | |
462 | { | |
fbcd4abc AA |
463 | struct nfs4_slot *slot; |
464 | struct nfs4_slot_table *tbl; | |
b069d94a | 465 | int status = 0; |
fbcd4abc AA |
466 | u8 slotid; |
467 | ||
468 | dprintk("--> %s\n", __func__); | |
ce5039c1 AA |
469 | /* slot already allocated? */ |
470 | if (res->sr_slotid != NFS4_MAX_SLOT_TABLE) | |
471 | return 0; | |
472 | ||
473 | memset(res, 0, sizeof(*res)); | |
474 | res->sr_slotid = NFS4_MAX_SLOT_TABLE; | |
fbcd4abc AA |
475 | tbl = &session->fc_slot_table; |
476 | ||
477 | spin_lock(&tbl->slot_tbl_lock); | |
b069d94a AA |
478 | if (test_bit(NFS4CLNT_SESSION_SETUP, &session->clp->cl_state)) { |
479 | if (tbl->highest_used_slotid != -1) { | |
480 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
481 | spin_unlock(&tbl->slot_tbl_lock); | |
482 | dprintk("<-- %s: Session reset: draining\n", __func__); | |
483 | return -EAGAIN; | |
484 | } | |
485 | ||
486 | /* The slot table is empty; start the reset thread */ | |
487 | dprintk("%s Session Reset\n", __func__); | |
488 | spin_unlock(&tbl->slot_tbl_lock); | |
489 | status = nfs4_recover_session(session); | |
490 | if (status) | |
491 | return status; | |
492 | spin_lock(&tbl->slot_tbl_lock); | |
493 | } | |
494 | ||
fbcd4abc AA |
495 | slotid = nfs4_find_slot(tbl, task); |
496 | if (slotid == NFS4_MAX_SLOT_TABLE) { | |
497 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
498 | spin_unlock(&tbl->slot_tbl_lock); | |
499 | dprintk("<-- %s: no free slots\n", __func__); | |
500 | return -EAGAIN; | |
501 | } | |
502 | spin_unlock(&tbl->slot_tbl_lock); | |
503 | ||
504 | slot = tbl->slots + slotid; | |
99fe60d0 | 505 | args->sa_session = session; |
fbcd4abc AA |
506 | args->sa_slotid = slotid; |
507 | args->sa_cache_this = cache_reply; | |
508 | ||
509 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr); | |
510 | ||
99fe60d0 | 511 | res->sr_session = session; |
fbcd4abc AA |
512 | res->sr_slotid = slotid; |
513 | res->sr_renewal_time = jiffies; | |
514 | /* | |
515 | * sr_status is only set in decode_sequence, and so will remain | |
516 | * set to 1 if an rpc level failure occurs. | |
517 | */ | |
518 | res->sr_status = 1; | |
ce5039c1 AA |
519 | return 0; |
520 | } | |
521 | ||
522 | int nfs4_setup_sequence(struct nfs_client *clp, | |
523 | struct nfs4_sequence_args *args, | |
524 | struct nfs4_sequence_res *res, | |
525 | int cache_reply, | |
526 | struct rpc_task *task) | |
527 | { | |
528 | int ret = 0; | |
529 | ||
530 | dprintk("--> %s clp %p session %p sr_slotid %d\n", | |
531 | __func__, clp, clp->cl_session, res->sr_slotid); | |
532 | ||
533 | if (!nfs4_has_session(clp)) | |
534 | goto out; | |
535 | ret = nfs41_setup_sequence(clp->cl_session, args, res, cache_reply, | |
536 | task); | |
537 | if (ret != -EAGAIN) { | |
538 | /* terminate rpc task */ | |
539 | task->tk_status = ret; | |
540 | task->tk_action = NULL; | |
541 | } | |
542 | out: | |
543 | dprintk("<-- %s status=%d\n", __func__, ret); | |
544 | return ret; | |
545 | } | |
546 | ||
547 | struct nfs41_call_sync_data { | |
548 | struct nfs_client *clp; | |
549 | struct nfs4_sequence_args *seq_args; | |
550 | struct nfs4_sequence_res *seq_res; | |
551 | int cache_reply; | |
552 | }; | |
553 | ||
554 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
555 | { | |
556 | struct nfs41_call_sync_data *data = calldata; | |
557 | ||
558 | dprintk("--> %s data->clp->cl_session %p\n", __func__, | |
559 | data->clp->cl_session); | |
560 | if (nfs4_setup_sequence(data->clp, data->seq_args, | |
561 | data->seq_res, data->cache_reply, task)) | |
562 | return; | |
563 | rpc_call_start(task); | |
564 | } | |
565 | ||
69ab40c4 AA |
566 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
567 | { | |
568 | struct nfs41_call_sync_data *data = calldata; | |
569 | ||
570 | nfs41_sequence_done(data->clp, data->seq_res, task->tk_status); | |
571 | nfs41_sequence_free_slot(data->clp, data->seq_res); | |
572 | } | |
573 | ||
ce5039c1 AA |
574 | struct rpc_call_ops nfs41_call_sync_ops = { |
575 | .rpc_call_prepare = nfs41_call_sync_prepare, | |
69ab40c4 | 576 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
577 | }; |
578 | ||
579 | static int nfs4_call_sync_sequence(struct nfs_client *clp, | |
580 | struct rpc_clnt *clnt, | |
581 | struct rpc_message *msg, | |
582 | struct nfs4_sequence_args *args, | |
583 | struct nfs4_sequence_res *res, | |
584 | int cache_reply) | |
585 | { | |
586 | int ret; | |
587 | struct rpc_task *task; | |
588 | struct nfs41_call_sync_data data = { | |
589 | .clp = clp, | |
590 | .seq_args = args, | |
591 | .seq_res = res, | |
592 | .cache_reply = cache_reply, | |
593 | }; | |
594 | struct rpc_task_setup task_setup = { | |
595 | .rpc_client = clnt, | |
596 | .rpc_message = msg, | |
597 | .callback_ops = &nfs41_call_sync_ops, | |
598 | .callback_data = &data | |
599 | }; | |
600 | ||
601 | res->sr_slotid = NFS4_MAX_SLOT_TABLE; | |
602 | task = rpc_run_task(&task_setup); | |
603 | if (IS_ERR(task)) | |
604 | ret = PTR_ERR(task); | |
605 | else { | |
606 | ret = task->tk_status; | |
607 | rpc_put_task(task); | |
608 | } | |
609 | return ret; | |
610 | } | |
611 | ||
cccef3b9 AA |
612 | int _nfs4_call_sync_session(struct nfs_server *server, |
613 | struct rpc_message *msg, | |
614 | struct nfs4_sequence_args *args, | |
615 | struct nfs4_sequence_res *res, | |
616 | int cache_reply) | |
617 | { | |
ce5039c1 AA |
618 | return nfs4_call_sync_sequence(server->nfs_client, server->client, |
619 | msg, args, res, cache_reply); | |
cccef3b9 AA |
620 | } |
621 | ||
622 | #endif /* CONFIG_NFS_V4_1 */ | |
623 | ||
624 | int _nfs4_call_sync(struct nfs_server *server, | |
625 | struct rpc_message *msg, | |
626 | struct nfs4_sequence_args *args, | |
627 | struct nfs4_sequence_res *res, | |
628 | int cache_reply) | |
629 | { | |
f3752975 | 630 | args->sa_session = res->sr_session = NULL; |
cccef3b9 AA |
631 | return rpc_call_sync(server->client, msg, 0); |
632 | } | |
633 | ||
634 | #define nfs4_call_sync(server, msg, args, res, cache_reply) \ | |
635 | (server)->nfs_client->cl_call_sync((server), (msg), &(args)->seq_args, \ | |
636 | &(res)->seq_res, (cache_reply)) | |
637 | ||
b0df806c AA |
638 | static void nfs4_sequence_done(const struct nfs_server *server, |
639 | struct nfs4_sequence_res *res, int rpc_status) | |
640 | { | |
641 | #ifdef CONFIG_NFS_V4_1 | |
642 | if (nfs4_has_session(server->nfs_client)) | |
643 | nfs41_sequence_done(server->nfs_client, res, rpc_status); | |
644 | #endif /* CONFIG_NFS_V4_1 */ | |
645 | } | |
646 | ||
647 | /* no restart, therefore free slot here */ | |
648 | static void nfs4_sequence_done_free_slot(const struct nfs_server *server, | |
649 | struct nfs4_sequence_res *res, | |
650 | int rpc_status) | |
651 | { | |
652 | nfs4_sequence_done(server, res, rpc_status); | |
653 | nfs4_sequence_free_slot(server->nfs_client, res); | |
654 | } | |
655 | ||
38478b24 | 656 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 657 | { |
38478b24 | 658 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 659 | |
38478b24 | 660 | spin_lock(&dir->i_lock); |
40d24704 TM |
661 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; |
662 | if (!cinfo->atomic || cinfo->before != nfsi->change_attr) | |
bfc69a45 | 663 | nfs_force_lookup_revalidate(dir); |
40d24704 | 664 | nfsi->change_attr = cinfo->after; |
38478b24 | 665 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
666 | } |
667 | ||
e56e0b78 | 668 | struct nfs4_opendata { |
c6d00e63 | 669 | struct kref kref; |
e56e0b78 TM |
670 | struct nfs_openargs o_arg; |
671 | struct nfs_openres o_res; | |
cdd4e68b TM |
672 | struct nfs_open_confirmargs c_arg; |
673 | struct nfs_open_confirmres c_res; | |
e56e0b78 TM |
674 | struct nfs_fattr f_attr; |
675 | struct nfs_fattr dir_attr; | |
ad389da7 | 676 | struct path path; |
e56e0b78 TM |
677 | struct dentry *dir; |
678 | struct nfs4_state_owner *owner; | |
aac00a8d | 679 | struct nfs4_state *state; |
e56e0b78 | 680 | struct iattr attrs; |
26e976a8 | 681 | unsigned long timestamp; |
3e309914 | 682 | unsigned int rpc_done : 1; |
24ac23ab TM |
683 | int rpc_status; |
684 | int cancelled; | |
e56e0b78 TM |
685 | }; |
686 | ||
2ced46c2 TM |
687 | |
688 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
689 | { | |
690 | p->o_res.f_attr = &p->f_attr; | |
691 | p->o_res.dir_attr = &p->dir_attr; | |
c1d51931 TM |
692 | p->o_res.seqid = p->o_arg.seqid; |
693 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 TM |
694 | p->o_res.server = p->o_arg.server; |
695 | nfs_fattr_init(&p->f_attr); | |
696 | nfs_fattr_init(&p->dir_attr); | |
578e4585 | 697 | p->o_res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE; |
2ced46c2 TM |
698 | } |
699 | ||
ad389da7 | 700 | static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path, |
dc0b027d | 701 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
e56e0b78 TM |
702 | const struct iattr *attrs) |
703 | { | |
ad389da7 | 704 | struct dentry *parent = dget_parent(path->dentry); |
e56e0b78 TM |
705 | struct inode *dir = parent->d_inode; |
706 | struct nfs_server *server = NFS_SERVER(dir); | |
707 | struct nfs4_opendata *p; | |
708 | ||
709 | p = kzalloc(sizeof(*p), GFP_KERNEL); | |
710 | if (p == NULL) | |
711 | goto err; | |
712 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid); | |
713 | if (p->o_arg.seqid == NULL) | |
714 | goto err_free; | |
ad389da7 TM |
715 | p->path.mnt = mntget(path->mnt); |
716 | p->path.dentry = dget(path->dentry); | |
e56e0b78 TM |
717 | p->dir = parent; |
718 | p->owner = sp; | |
719 | atomic_inc(&sp->so_count); | |
720 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
721 | p->o_arg.open_flags = flags; |
722 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
7539bbab | 723 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 724 | p->o_arg.id = sp->so_owner_id.id; |
ad389da7 | 725 | p->o_arg.name = &p->path.dentry->d_name; |
e56e0b78 TM |
726 | p->o_arg.server = server; |
727 | p->o_arg.bitmask = server->attr_bitmask; | |
728 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; | |
e56e0b78 TM |
729 | if (flags & O_EXCL) { |
730 | u32 *s = (u32 *) p->o_arg.u.verifier.data; | |
731 | s[0] = jiffies; | |
732 | s[1] = current->pid; | |
733 | } else if (flags & O_CREAT) { | |
734 | p->o_arg.u.attrs = &p->attrs; | |
735 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
736 | } | |
cdd4e68b TM |
737 | p->c_arg.fh = &p->o_res.fh; |
738 | p->c_arg.stateid = &p->o_res.stateid; | |
739 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 740 | nfs4_init_opendata_res(p); |
c6d00e63 | 741 | kref_init(&p->kref); |
e56e0b78 TM |
742 | return p; |
743 | err_free: | |
744 | kfree(p); | |
745 | err: | |
746 | dput(parent); | |
747 | return NULL; | |
748 | } | |
749 | ||
c6d00e63 | 750 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 751 | { |
c6d00e63 TM |
752 | struct nfs4_opendata *p = container_of(kref, |
753 | struct nfs4_opendata, kref); | |
754 | ||
755 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
756 | if (p->state != NULL) |
757 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
758 | nfs4_put_state_owner(p->owner); |
759 | dput(p->dir); | |
31f31db1 | 760 | path_put(&p->path); |
c6d00e63 TM |
761 | kfree(p); |
762 | } | |
763 | ||
764 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
765 | { | |
766 | if (p != NULL) | |
767 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
768 | } |
769 | ||
06f814a3 TM |
770 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
771 | { | |
06f814a3 TM |
772 | int ret; |
773 | ||
06f814a3 | 774 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
775 | return ret; |
776 | } | |
777 | ||
dc0b027d | 778 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
779 | { |
780 | int ret = 0; | |
dc0b027d TM |
781 | |
782 | if (open_mode & O_EXCL) | |
783 | goto out; | |
784 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 TM |
785 | case FMODE_READ: |
786 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0; | |
6ee41268 TM |
787 | break; |
788 | case FMODE_WRITE: | |
789 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0; | |
6ee41268 TM |
790 | break; |
791 | case FMODE_READ|FMODE_WRITE: | |
792 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0; | |
793 | } | |
dc0b027d | 794 | out: |
6ee41268 TM |
795 | return ret; |
796 | } | |
797 | ||
dc0b027d | 798 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 799 | { |
dc0b027d | 800 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 801 | return 0; |
15c831bf | 802 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 803 | return 0; |
b7391f44 | 804 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
805 | return 1; |
806 | } | |
807 | ||
dc0b027d | 808 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 809 | { |
dc0b027d | 810 | switch (fmode) { |
e7616923 TM |
811 | case FMODE_WRITE: |
812 | state->n_wronly++; | |
813 | break; | |
814 | case FMODE_READ: | |
815 | state->n_rdonly++; | |
816 | break; | |
817 | case FMODE_READ|FMODE_WRITE: | |
818 | state->n_rdwr++; | |
819 | } | |
dc0b027d | 820 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
821 | } |
822 | ||
dc0b027d | 823 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
824 | { |
825 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
826 | memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data)); | |
827 | memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data)); | |
dc0b027d | 828 | switch (fmode) { |
003707c7 TM |
829 | case FMODE_READ: |
830 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
831 | break; | |
832 | case FMODE_WRITE: | |
833 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
834 | break; | |
835 | case FMODE_READ|FMODE_WRITE: | |
836 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
837 | } | |
e7616923 TM |
838 | } |
839 | ||
dc0b027d | 840 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 841 | { |
8bda4e4c | 842 | write_seqlock(&state->seqlock); |
dc0b027d | 843 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 844 | write_sequnlock(&state->seqlock); |
003707c7 TM |
845 | } |
846 | ||
dc0b027d | 847 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 848 | { |
8bda4e4c TM |
849 | /* |
850 | * Protect the call to nfs4_state_set_mode_locked and | |
851 | * serialise the stateid update | |
852 | */ | |
853 | write_seqlock(&state->seqlock); | |
003707c7 TM |
854 | if (deleg_stateid != NULL) { |
855 | memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data)); | |
856 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
857 | } | |
858 | if (open_stateid != NULL) | |
dc0b027d | 859 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
860 | write_sequnlock(&state->seqlock); |
861 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 862 | update_open_stateflags(state, fmode); |
ec073428 | 863 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
864 | } |
865 | ||
dc0b027d | 866 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
867 | { |
868 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
869 | struct nfs_delegation *deleg_cur; | |
870 | int ret = 0; | |
871 | ||
dc0b027d | 872 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
873 | |
874 | rcu_read_lock(); | |
875 | deleg_cur = rcu_dereference(nfsi->delegation); | |
876 | if (deleg_cur == NULL) | |
877 | goto no_delegation; | |
878 | ||
879 | spin_lock(&deleg_cur->lock); | |
880 | if (nfsi->delegation != deleg_cur || | |
dc0b027d | 881 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
882 | goto no_delegation_unlock; |
883 | ||
884 | if (delegation == NULL) | |
885 | delegation = &deleg_cur->stateid; | |
886 | else if (memcmp(deleg_cur->stateid.data, delegation->data, NFS4_STATEID_SIZE) != 0) | |
887 | goto no_delegation_unlock; | |
888 | ||
b7391f44 | 889 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 890 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
891 | ret = 1; |
892 | no_delegation_unlock: | |
893 | spin_unlock(&deleg_cur->lock); | |
894 | no_delegation: | |
895 | rcu_read_unlock(); | |
896 | ||
897 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 898 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
899 | ret = 1; |
900 | } | |
901 | ||
902 | return ret; | |
903 | } | |
904 | ||
905 | ||
dc0b027d | 906 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
907 | { |
908 | struct nfs_delegation *delegation; | |
909 | ||
910 | rcu_read_lock(); | |
911 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 912 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
913 | rcu_read_unlock(); |
914 | return; | |
915 | } | |
916 | rcu_read_unlock(); | |
917 | nfs_inode_return_delegation(inode); | |
918 | } | |
919 | ||
6ee41268 | 920 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
921 | { |
922 | struct nfs4_state *state = opendata->state; | |
923 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
924 | struct nfs_delegation *delegation; | |
dc0b027d TM |
925 | int open_mode = opendata->o_arg.open_flags & O_EXCL; |
926 | fmode_t fmode = opendata->o_arg.fmode; | |
aac00a8d TM |
927 | nfs4_stateid stateid; |
928 | int ret = -EAGAIN; | |
929 | ||
aac00a8d | 930 | for (;;) { |
dc0b027d | 931 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 932 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
933 | if (can_open_cached(state, fmode, open_mode)) { |
934 | update_open_stateflags(state, fmode); | |
6ee41268 | 935 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
936 | goto out_return_state; |
937 | } | |
938 | spin_unlock(&state->owner->so_lock); | |
939 | } | |
34310430 TM |
940 | rcu_read_lock(); |
941 | delegation = rcu_dereference(nfsi->delegation); | |
942 | if (delegation == NULL || | |
dc0b027d | 943 | !can_open_delegated(delegation, fmode)) { |
34310430 | 944 | rcu_read_unlock(); |
aac00a8d | 945 | break; |
34310430 | 946 | } |
aac00a8d TM |
947 | /* Save the delegation */ |
948 | memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data)); | |
949 | rcu_read_unlock(); | |
af22f94a | 950 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
951 | if (ret != 0) |
952 | goto out; | |
953 | ret = -EAGAIN; | |
34310430 TM |
954 | |
955 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 956 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 957 | goto out_return_state; |
aac00a8d | 958 | } |
aac00a8d TM |
959 | out: |
960 | return ERR_PTR(ret); | |
961 | out_return_state: | |
962 | atomic_inc(&state->count); | |
963 | return state; | |
964 | } | |
965 | ||
24ac23ab TM |
966 | static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) |
967 | { | |
968 | struct inode *inode; | |
969 | struct nfs4_state *state = NULL; | |
003707c7 | 970 | struct nfs_delegation *delegation; |
1b370bc2 | 971 | int ret; |
24ac23ab | 972 | |
aac00a8d | 973 | if (!data->rpc_done) { |
6ee41268 | 974 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
975 | goto out; |
976 | } | |
977 | ||
1b370bc2 | 978 | ret = -EAGAIN; |
24ac23ab | 979 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 980 | goto err; |
24ac23ab | 981 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 982 | ret = PTR_ERR(inode); |
03f28e3a | 983 | if (IS_ERR(inode)) |
1b370bc2 TM |
984 | goto err; |
985 | ret = -ENOMEM; | |
24ac23ab TM |
986 | state = nfs4_get_open_state(inode, data->owner); |
987 | if (state == NULL) | |
1b370bc2 | 988 | goto err_put_inode; |
549d6ed5 | 989 | if (data->o_res.delegation_type != 0) { |
549d6ed5 TM |
990 | int delegation_flags = 0; |
991 | ||
003707c7 TM |
992 | rcu_read_lock(); |
993 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
994 | if (delegation) | |
995 | delegation_flags = delegation->flags; | |
996 | rcu_read_unlock(); | |
15c831bf | 997 | if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) |
549d6ed5 TM |
998 | nfs_inode_set_delegation(state->inode, |
999 | data->owner->so_cred, | |
1000 | &data->o_res); | |
1001 | else | |
1002 | nfs_inode_reclaim_delegation(state->inode, | |
1003 | data->owner->so_cred, | |
1004 | &data->o_res); | |
1005 | } | |
34310430 TM |
1006 | |
1007 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
dc0b027d | 1008 | data->o_arg.fmode); |
24ac23ab | 1009 | iput(inode); |
aac00a8d | 1010 | out: |
24ac23ab | 1011 | return state; |
1b370bc2 TM |
1012 | err_put_inode: |
1013 | iput(inode); | |
1014 | err: | |
1015 | return ERR_PTR(ret); | |
24ac23ab TM |
1016 | } |
1017 | ||
864472e9 TM |
1018 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1019 | { | |
1020 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1021 | struct nfs_open_context *ctx; | |
1022 | ||
1023 | spin_lock(&state->inode->i_lock); | |
1024 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1025 | if (ctx->state != state) | |
1026 | continue; | |
1027 | get_nfs_open_context(ctx); | |
1028 | spin_unlock(&state->inode->i_lock); | |
1029 | return ctx; | |
1030 | } | |
1031 | spin_unlock(&state->inode->i_lock); | |
1032 | return ERR_PTR(-ENOENT); | |
1033 | } | |
1034 | ||
6f220ed5 TM |
1035 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
1036 | { | |
1037 | struct nfs4_opendata *opendata; | |
1038 | ||
dc0b027d | 1039 | opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL); |
6f220ed5 TM |
1040 | if (opendata == NULL) |
1041 | return ERR_PTR(-ENOMEM); | |
1042 | opendata->state = state; | |
1043 | atomic_inc(&state->count); | |
1044 | return opendata; | |
1045 | } | |
1046 | ||
dc0b027d | 1047 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1048 | { |
2ced46c2 | 1049 | struct nfs4_state *newstate; |
864472e9 TM |
1050 | int ret; |
1051 | ||
dc0b027d TM |
1052 | opendata->o_arg.open_flags = 0; |
1053 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1054 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1055 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1056 | nfs4_init_opendata_res(opendata); | |
864472e9 TM |
1057 | ret = _nfs4_proc_open(opendata); |
1058 | if (ret != 0) | |
1059 | return ret; | |
2ced46c2 | 1060 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1061 | if (IS_ERR(newstate)) |
1062 | return PTR_ERR(newstate); | |
dc0b027d | 1063 | nfs4_close_state(&opendata->path, newstate, fmode); |
2ced46c2 | 1064 | *res = newstate; |
864472e9 TM |
1065 | return 0; |
1066 | } | |
1067 | ||
1068 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1069 | { | |
864472e9 | 1070 | struct nfs4_state *newstate; |
864472e9 TM |
1071 | int ret; |
1072 | ||
1073 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1074 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1075 | smp_rmb(); |
1076 | if (state->n_rdwr != 0) { | |
2ced46c2 | 1077 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1078 | if (ret != 0) |
1079 | return ret; | |
2ced46c2 TM |
1080 | if (newstate != state) |
1081 | return -ESTALE; | |
864472e9 TM |
1082 | } |
1083 | if (state->n_wronly != 0) { | |
2ced46c2 | 1084 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1085 | if (ret != 0) |
1086 | return ret; | |
2ced46c2 TM |
1087 | if (newstate != state) |
1088 | return -ESTALE; | |
864472e9 TM |
1089 | } |
1090 | if (state->n_rdonly != 0) { | |
2ced46c2 | 1091 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1092 | if (ret != 0) |
1093 | return ret; | |
2ced46c2 TM |
1094 | if (newstate != state) |
1095 | return -ESTALE; | |
864472e9 | 1096 | } |
1ac7e2fd TM |
1097 | /* |
1098 | * We may have performed cached opens for all three recoveries. | |
1099 | * Check if we need to update the current stateid. | |
1100 | */ | |
1101 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
1102 | memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) { | |
8bda4e4c | 1103 | write_seqlock(&state->seqlock); |
1ac7e2fd TM |
1104 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
1105 | memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)); | |
8bda4e4c | 1106 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1107 | } |
864472e9 TM |
1108 | return 0; |
1109 | } | |
1110 | ||
1da177e4 LT |
1111 | /* |
1112 | * OPEN_RECLAIM: | |
1113 | * reclaim state on the server after a reboot. | |
1da177e4 | 1114 | */ |
539cd03a | 1115 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1116 | { |
1ac7e2fd | 1117 | struct nfs_delegation *delegation; |
864472e9 | 1118 | struct nfs4_opendata *opendata; |
dc0b027d | 1119 | fmode_t delegation_type = 0; |
1da177e4 LT |
1120 | int status; |
1121 | ||
6f220ed5 TM |
1122 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1123 | if (IS_ERR(opendata)) | |
1124 | return PTR_ERR(opendata); | |
864472e9 TM |
1125 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1126 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1127 | rcu_read_lock(); |
1128 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1129 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1130 | delegation_type = delegation->type; |
1ac7e2fd | 1131 | rcu_read_unlock(); |
864472e9 TM |
1132 | opendata->o_arg.u.delegation_type = delegation_type; |
1133 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1134 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1135 | return status; |
1136 | } | |
1137 | ||
539cd03a | 1138 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1139 | { |
1140 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1141 | struct nfs4_exception exception = { }; | |
1142 | int err; | |
1143 | do { | |
539cd03a | 1144 | err = _nfs4_do_open_reclaim(ctx, state); |
202b50dc TM |
1145 | if (err != -NFS4ERR_DELAY) |
1146 | break; | |
1147 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1148 | } while (exception.retry); |
1149 | return err; | |
1150 | } | |
1151 | ||
864472e9 TM |
1152 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1153 | { | |
1154 | struct nfs_open_context *ctx; | |
1155 | int ret; | |
1156 | ||
1157 | ctx = nfs4_state_find_open_context(state); | |
1158 | if (IS_ERR(ctx)) | |
1159 | return PTR_ERR(ctx); | |
539cd03a | 1160 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1161 | put_nfs_open_context(ctx); |
1162 | return ret; | |
1163 | } | |
1164 | ||
13437e12 | 1165 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1166 | { |
e56e0b78 | 1167 | struct nfs4_opendata *opendata; |
864472e9 | 1168 | int ret; |
1da177e4 | 1169 | |
6f220ed5 TM |
1170 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1171 | if (IS_ERR(opendata)) | |
1172 | return PTR_ERR(opendata); | |
e56e0b78 | 1173 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
13437e12 | 1174 | memcpy(opendata->o_arg.u.delegation.data, stateid->data, |
e56e0b78 | 1175 | sizeof(opendata->o_arg.u.delegation.data)); |
864472e9 | 1176 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1177 | nfs4_opendata_put(opendata); |
864472e9 | 1178 | return ret; |
1da177e4 LT |
1179 | } |
1180 | ||
13437e12 | 1181 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1182 | { |
1183 | struct nfs4_exception exception = { }; | |
539cd03a | 1184 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1185 | int err; |
1186 | do { | |
13437e12 | 1187 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1188 | switch (err) { |
1189 | case 0: | |
965b5d67 TM |
1190 | case -ENOENT: |
1191 | case -ESTALE: | |
1192 | goto out; | |
1da177e4 LT |
1193 | case -NFS4ERR_STALE_CLIENTID: |
1194 | case -NFS4ERR_STALE_STATEID: | |
1195 | case -NFS4ERR_EXPIRED: | |
1196 | /* Don't recall a delegation if it was lost */ | |
7539bbab | 1197 | nfs4_schedule_state_recovery(server->nfs_client); |
965b5d67 TM |
1198 | goto out; |
1199 | case -ERESTARTSYS: | |
1200 | /* | |
1201 | * The show must go on: exit, but mark the | |
1202 | * stateid as needing recovery. | |
1203 | */ | |
1204 | case -NFS4ERR_ADMIN_REVOKED: | |
1205 | case -NFS4ERR_BAD_STATEID: | |
1206 | nfs4_state_mark_reclaim_nograce(server->nfs_client, state); | |
1207 | case -ENOMEM: | |
1208 | err = 0; | |
1209 | goto out; | |
1da177e4 LT |
1210 | } |
1211 | err = nfs4_handle_exception(server, err, &exception); | |
1212 | } while (exception.retry); | |
965b5d67 | 1213 | out: |
1da177e4 LT |
1214 | return err; |
1215 | } | |
1216 | ||
cdd4e68b TM |
1217 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1218 | { | |
1219 | struct nfs4_opendata *data = calldata; | |
1220 | ||
1221 | data->rpc_status = task->tk_status; | |
1222 | if (RPC_ASSASSINATED(task)) | |
1223 | return; | |
26e976a8 | 1224 | if (data->rpc_status == 0) { |
cdd4e68b TM |
1225 | memcpy(data->o_res.stateid.data, data->c_res.stateid.data, |
1226 | sizeof(data->o_res.stateid.data)); | |
bb22629e | 1227 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1228 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1229 | data->rpc_done = 1; |
26e976a8 | 1230 | } |
cdd4e68b TM |
1231 | } |
1232 | ||
1233 | static void nfs4_open_confirm_release(void *calldata) | |
1234 | { | |
1235 | struct nfs4_opendata *data = calldata; | |
1236 | struct nfs4_state *state = NULL; | |
1237 | ||
1238 | /* If this request hasn't been cancelled, do nothing */ | |
1239 | if (data->cancelled == 0) | |
1240 | goto out_free; | |
1241 | /* In case of error, no cleanup! */ | |
3e309914 | 1242 | if (!data->rpc_done) |
cdd4e68b | 1243 | goto out_free; |
cdd4e68b | 1244 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1245 | if (!IS_ERR(state)) |
dc0b027d | 1246 | nfs4_close_state(&data->path, state, data->o_arg.fmode); |
cdd4e68b | 1247 | out_free: |
c6d00e63 | 1248 | nfs4_opendata_put(data); |
cdd4e68b TM |
1249 | } |
1250 | ||
1251 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1252 | .rpc_call_done = nfs4_open_confirm_done, |
1253 | .rpc_release = nfs4_open_confirm_release, | |
1254 | }; | |
1255 | ||
1256 | /* | |
1257 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1258 | */ | |
1259 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1260 | { | |
1261 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1262 | struct rpc_task *task; | |
5138fde0 TM |
1263 | struct rpc_message msg = { |
1264 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1265 | .rpc_argp = &data->c_arg, | |
1266 | .rpc_resp = &data->c_res, | |
1267 | .rpc_cred = data->owner->so_cred, | |
1268 | }; | |
c970aa85 TM |
1269 | struct rpc_task_setup task_setup_data = { |
1270 | .rpc_client = server->client, | |
5138fde0 | 1271 | .rpc_message = &msg, |
c970aa85 TM |
1272 | .callback_ops = &nfs4_open_confirm_ops, |
1273 | .callback_data = data, | |
101070ca | 1274 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1275 | .flags = RPC_TASK_ASYNC, |
1276 | }; | |
1da177e4 LT |
1277 | int status; |
1278 | ||
c6d00e63 | 1279 | kref_get(&data->kref); |
3e309914 TM |
1280 | data->rpc_done = 0; |
1281 | data->rpc_status = 0; | |
5138fde0 | 1282 | data->timestamp = jiffies; |
c970aa85 | 1283 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1284 | if (IS_ERR(task)) |
cdd4e68b | 1285 | return PTR_ERR(task); |
cdd4e68b TM |
1286 | status = nfs4_wait_for_completion_rpc_task(task); |
1287 | if (status != 0) { | |
1288 | data->cancelled = 1; | |
1289 | smp_wmb(); | |
1290 | } else | |
1291 | status = data->rpc_status; | |
e6b3c4db | 1292 | rpc_put_task(task); |
1da177e4 LT |
1293 | return status; |
1294 | } | |
1295 | ||
24ac23ab | 1296 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1297 | { |
24ac23ab TM |
1298 | struct nfs4_opendata *data = calldata; |
1299 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1300 | |
24ac23ab TM |
1301 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
1302 | return; | |
aac00a8d TM |
1303 | /* |
1304 | * Check if we still need to send an OPEN call, or if we can use | |
1305 | * a delegation instead. | |
1306 | */ | |
1307 | if (data->state != NULL) { | |
1308 | struct nfs_delegation *delegation; | |
1309 | ||
dc0b027d | 1310 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1311 | goto out_no_action; |
aac00a8d TM |
1312 | rcu_read_lock(); |
1313 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
1314 | if (delegation != NULL && | |
15c831bf | 1315 | test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) == 0) { |
aac00a8d | 1316 | rcu_read_unlock(); |
6ee41268 | 1317 | goto out_no_action; |
aac00a8d TM |
1318 | } |
1319 | rcu_read_unlock(); | |
1320 | } | |
24ac23ab | 1321 | /* Update sequence id. */ |
9f958ab8 | 1322 | data->o_arg.id = sp->so_owner_id.id; |
24ac23ab | 1323 | data->o_arg.clientid = sp->so_client->cl_clientid; |
6f220ed5 | 1324 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1325 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
6f220ed5 TM |
1326 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1327 | } | |
26e976a8 | 1328 | data->timestamp = jiffies; |
d898528c AA |
1329 | if (nfs4_setup_sequence(data->o_arg.server->nfs_client, |
1330 | &data->o_arg.seq_args, | |
1331 | &data->o_res.seq_res, 1, task)) | |
1332 | return; | |
5138fde0 | 1333 | rpc_call_start(task); |
6ee41268 TM |
1334 | return; |
1335 | out_no_action: | |
1336 | task->tk_action = NULL; | |
1337 | ||
24ac23ab | 1338 | } |
1da177e4 | 1339 | |
24ac23ab TM |
1340 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1341 | { | |
1342 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1343 | |
24ac23ab | 1344 | data->rpc_status = task->tk_status; |
d898528c AA |
1345 | |
1346 | nfs4_sequence_done_free_slot(data->o_arg.server, &data->o_res.seq_res, | |
1347 | task->tk_status); | |
1348 | ||
24ac23ab TM |
1349 | if (RPC_ASSASSINATED(task)) |
1350 | return; | |
1351 | if (task->tk_status == 0) { | |
1352 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1353 | case S_IFREG: |
1354 | break; | |
1355 | case S_IFLNK: | |
24ac23ab | 1356 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1357 | break; |
1358 | case S_IFDIR: | |
24ac23ab | 1359 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1360 | break; |
1361 | default: | |
24ac23ab | 1362 | data->rpc_status = -ENOTDIR; |
6f926b5b | 1363 | } |
26e976a8 | 1364 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1365 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1366 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1367 | } |
3e309914 | 1368 | data->rpc_done = 1; |
24ac23ab | 1369 | } |
6f926b5b | 1370 | |
24ac23ab TM |
1371 | static void nfs4_open_release(void *calldata) |
1372 | { | |
1373 | struct nfs4_opendata *data = calldata; | |
1374 | struct nfs4_state *state = NULL; | |
1375 | ||
1376 | /* If this request hasn't been cancelled, do nothing */ | |
1377 | if (data->cancelled == 0) | |
1378 | goto out_free; | |
1379 | /* In case of error, no cleanup! */ | |
3e309914 | 1380 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1381 | goto out_free; |
1382 | /* In case we need an open_confirm, no cleanup! */ | |
1383 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1384 | goto out_free; | |
24ac23ab | 1385 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1386 | if (!IS_ERR(state)) |
dc0b027d | 1387 | nfs4_close_state(&data->path, state, data->o_arg.fmode); |
24ac23ab | 1388 | out_free: |
c6d00e63 | 1389 | nfs4_opendata_put(data); |
24ac23ab TM |
1390 | } |
1391 | ||
1392 | static const struct rpc_call_ops nfs4_open_ops = { | |
1393 | .rpc_call_prepare = nfs4_open_prepare, | |
1394 | .rpc_call_done = nfs4_open_done, | |
1395 | .rpc_release = nfs4_open_release, | |
1396 | }; | |
1397 | ||
1398 | /* | |
1399 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1400 | */ | |
1401 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1402 | { | |
1403 | struct inode *dir = data->dir->d_inode; | |
1404 | struct nfs_server *server = NFS_SERVER(dir); | |
1405 | struct nfs_openargs *o_arg = &data->o_arg; | |
1406 | struct nfs_openres *o_res = &data->o_res; | |
1407 | struct rpc_task *task; | |
5138fde0 TM |
1408 | struct rpc_message msg = { |
1409 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1410 | .rpc_argp = o_arg, | |
1411 | .rpc_resp = o_res, | |
1412 | .rpc_cred = data->owner->so_cred, | |
1413 | }; | |
c970aa85 TM |
1414 | struct rpc_task_setup task_setup_data = { |
1415 | .rpc_client = server->client, | |
5138fde0 | 1416 | .rpc_message = &msg, |
c970aa85 TM |
1417 | .callback_ops = &nfs4_open_ops, |
1418 | .callback_data = data, | |
101070ca | 1419 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1420 | .flags = RPC_TASK_ASYNC, |
1421 | }; | |
24ac23ab TM |
1422 | int status; |
1423 | ||
c6d00e63 | 1424 | kref_get(&data->kref); |
3e309914 TM |
1425 | data->rpc_done = 0; |
1426 | data->rpc_status = 0; | |
2ced46c2 | 1427 | data->cancelled = 0; |
c970aa85 | 1428 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1429 | if (IS_ERR(task)) |
24ac23ab | 1430 | return PTR_ERR(task); |
24ac23ab TM |
1431 | status = nfs4_wait_for_completion_rpc_task(task); |
1432 | if (status != 0) { | |
1433 | data->cancelled = 1; | |
1434 | smp_wmb(); | |
1435 | } else | |
1436 | status = data->rpc_status; | |
e6b3c4db | 1437 | rpc_put_task(task); |
3e309914 | 1438 | if (status != 0 || !data->rpc_done) |
24ac23ab TM |
1439 | return status; |
1440 | ||
9936781d TM |
1441 | if (o_res->fh.size == 0) |
1442 | _nfs4_proc_lookup(dir, o_arg->name, &o_res->fh, o_res->f_attr); | |
1443 | ||
56ae19f3 TM |
1444 | if (o_arg->open_flags & O_CREAT) { |
1445 | update_changeattr(dir, &o_res->cinfo); | |
1446 | nfs_post_op_update_inode(dir, o_res->dir_attr); | |
1447 | } else | |
1448 | nfs_refresh_inode(dir, o_res->dir_attr); | |
1da177e4 | 1449 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1450 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1451 | if (status != 0) |
24ac23ab | 1452 | return status; |
1da177e4 LT |
1453 | } |
1454 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1455 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1456 | return 0; |
1da177e4 LT |
1457 | } |
1458 | ||
10afec90 | 1459 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
58d9714a | 1460 | { |
7539bbab | 1461 | struct nfs_client *clp = server->nfs_client; |
a78cb57a | 1462 | unsigned int loop; |
6b30954e | 1463 | int ret; |
58d9714a | 1464 | |
a78cb57a | 1465 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { |
65de872e | 1466 | ret = nfs4_wait_clnt_recover(clp); |
6b30954e | 1467 | if (ret != 0) |
a78cb57a | 1468 | break; |
e598d843 TM |
1469 | if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) && |
1470 | !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state)) | |
6b30954e | 1471 | break; |
58d9714a | 1472 | nfs4_schedule_state_recovery(clp); |
a78cb57a | 1473 | ret = -EIO; |
6b30954e | 1474 | } |
a78cb57a | 1475 | return ret; |
58d9714a TM |
1476 | } |
1477 | ||
1da177e4 LT |
1478 | /* |
1479 | * OPEN_EXPIRED: | |
1480 | * reclaim state on the server after a network partition. | |
1481 | * Assumes caller holds the appropriate lock | |
1482 | */ | |
539cd03a | 1483 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1484 | { |
e56e0b78 | 1485 | struct nfs4_opendata *opendata; |
864472e9 | 1486 | int ret; |
1da177e4 | 1487 | |
6f220ed5 TM |
1488 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1489 | if (IS_ERR(opendata)) | |
1490 | return PTR_ERR(opendata); | |
864472e9 | 1491 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1492 | if (ret == -ESTALE) |
539cd03a | 1493 | d_drop(ctx->path.dentry); |
c6d00e63 | 1494 | nfs4_opendata_put(opendata); |
864472e9 | 1495 | return ret; |
1da177e4 LT |
1496 | } |
1497 | ||
a9ed2e25 | 1498 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1499 | { |
539cd03a | 1500 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1501 | struct nfs4_exception exception = { }; |
1502 | int err; | |
1503 | ||
1504 | do { | |
539cd03a | 1505 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1506 | switch (err) { |
1507 | default: | |
1508 | goto out; | |
1509 | case -NFS4ERR_GRACE: | |
1510 | case -NFS4ERR_DELAY: | |
1511 | nfs4_handle_exception(server, err, &exception); | |
1512 | err = 0; | |
1513 | } | |
202b50dc | 1514 | } while (exception.retry); |
a9ed2e25 | 1515 | out: |
202b50dc TM |
1516 | return err; |
1517 | } | |
1518 | ||
1da177e4 LT |
1519 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1520 | { | |
1da177e4 | 1521 | struct nfs_open_context *ctx; |
864472e9 | 1522 | int ret; |
1da177e4 | 1523 | |
864472e9 TM |
1524 | ctx = nfs4_state_find_open_context(state); |
1525 | if (IS_ERR(ctx)) | |
1526 | return PTR_ERR(ctx); | |
539cd03a | 1527 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1528 | put_nfs_open_context(ctx); |
1529 | return ret; | |
1da177e4 LT |
1530 | } |
1531 | ||
aa53ed54 JL |
1532 | /* |
1533 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1534 | * fields corresponding to attributes that were used to store the verifier. | |
1535 | * Make sure we clobber those fields in the later setattr call | |
1536 | */ | |
1537 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1538 | { | |
1539 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1540 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1541 | sattr->ia_valid |= ATTR_ATIME; | |
1542 | ||
1543 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1544 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1545 | sattr->ia_valid |= ATTR_MTIME; | |
1546 | } | |
1547 | ||
1da177e4 | 1548 | /* |
24ac23ab | 1549 | * Returns a referenced nfs4_state |
1da177e4 | 1550 | */ |
dc0b027d | 1551 | 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 |
1552 | { |
1553 | struct nfs4_state_owner *sp; | |
1554 | struct nfs4_state *state = NULL; | |
1555 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1556 | struct nfs4_opendata *opendata; |
aac00a8d | 1557 | int status; |
1da177e4 LT |
1558 | |
1559 | /* Protect against reboot recovery conflicts */ | |
1da177e4 LT |
1560 | status = -ENOMEM; |
1561 | if (!(sp = nfs4_get_state_owner(server, cred))) { | |
1562 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); | |
1563 | goto out_err; | |
1564 | } | |
58d9714a TM |
1565 | status = nfs4_recover_expired_lease(server); |
1566 | if (status != 0) | |
b4454fe1 | 1567 | goto err_put_state_owner; |
aac00a8d | 1568 | if (path->dentry->d_inode != NULL) |
dc0b027d | 1569 | nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode); |
58d9714a | 1570 | status = -ENOMEM; |
dc0b027d | 1571 | opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr); |
e56e0b78 | 1572 | if (opendata == NULL) |
95d35cb4 | 1573 | goto err_put_state_owner; |
1da177e4 | 1574 | |
aac00a8d TM |
1575 | if (path->dentry->d_inode != NULL) |
1576 | opendata->state = nfs4_get_open_state(path->dentry->d_inode, sp); | |
1577 | ||
24ac23ab | 1578 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1579 | if (status != 0) |
c6d00e63 | 1580 | goto err_opendata_put; |
1da177e4 | 1581 | |
aa53ed54 JL |
1582 | if (opendata->o_arg.open_flags & O_EXCL) |
1583 | nfs4_exclusive_attrset(opendata, sattr); | |
1584 | ||
24ac23ab | 1585 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1586 | status = PTR_ERR(state); |
1587 | if (IS_ERR(state)) | |
c6d00e63 | 1588 | goto err_opendata_put; |
c6d00e63 | 1589 | nfs4_opendata_put(opendata); |
1da177e4 | 1590 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1591 | *res = state; |
1592 | return 0; | |
c6d00e63 TM |
1593 | err_opendata_put: |
1594 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
1595 | err_put_state_owner: |
1596 | nfs4_put_state_owner(sp); | |
1da177e4 | 1597 | out_err: |
1da177e4 LT |
1598 | *res = NULL; |
1599 | return status; | |
1600 | } | |
1601 | ||
1602 | ||
dc0b027d | 1603 | 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 |
1604 | { |
1605 | struct nfs4_exception exception = { }; | |
1606 | struct nfs4_state *res; | |
1607 | int status; | |
1608 | ||
1609 | do { | |
dc0b027d | 1610 | status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res); |
1da177e4 LT |
1611 | if (status == 0) |
1612 | break; | |
1613 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1614 | * book-keeping w.r.t. state-changing operations | |
1615 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1616 | * It is actually a sign of a bug on the client or on the server. | |
1617 | * | |
1618 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1619 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1620 | * have unhashed the old state_owner for us, and that we can |
1621 | * therefore safely retry using a new one. We should still warn | |
1622 | * the user though... | |
1623 | */ | |
1624 | if (status == -NFS4ERR_BAD_SEQID) { | |
6f43ddcc TM |
1625 | printk(KERN_WARNING "NFS: v4 server %s " |
1626 | " returned a bad sequence-id error!\n", | |
1627 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1628 | exception.retry = 1; |
1629 | continue; | |
1630 | } | |
550f5747 TM |
1631 | /* |
1632 | * BAD_STATEID on OPEN means that the server cancelled our | |
1633 | * state before it received the OPEN_CONFIRM. | |
1634 | * Recover by retrying the request as per the discussion | |
1635 | * on Page 181 of RFC3530. | |
1636 | */ | |
1637 | if (status == -NFS4ERR_BAD_STATEID) { | |
1638 | exception.retry = 1; | |
1639 | continue; | |
1640 | } | |
aac00a8d TM |
1641 | if (status == -EAGAIN) { |
1642 | /* We must have found a delegation */ | |
1643 | exception.retry = 1; | |
1644 | continue; | |
1645 | } | |
1da177e4 LT |
1646 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1647 | status, &exception)); | |
1648 | } while (exception.retry); | |
1649 | return res; | |
1650 | } | |
1651 | ||
659bfcd6 TM |
1652 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1653 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1654 | struct nfs4_state *state) | |
1da177e4 | 1655 | { |
3e4f6290 | 1656 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1657 | struct nfs_setattrargs arg = { |
3e4f6290 | 1658 | .fh = NFS_FH(inode), |
1da177e4 LT |
1659 | .iap = sattr, |
1660 | .server = server, | |
1661 | .bitmask = server->attr_bitmask, | |
1662 | }; | |
1663 | struct nfs_setattrres res = { | |
1664 | .fattr = fattr, | |
1665 | .server = server, | |
1666 | }; | |
1667 | struct rpc_message msg = { | |
659bfcd6 TM |
1668 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
1669 | .rpc_argp = &arg, | |
1670 | .rpc_resp = &res, | |
1671 | .rpc_cred = cred, | |
1da177e4 | 1672 | }; |
26e976a8 | 1673 | unsigned long timestamp = jiffies; |
65e4308d | 1674 | int status; |
1da177e4 | 1675 | |
0e574af1 | 1676 | nfs_fattr_init(fattr); |
1da177e4 | 1677 | |
3e4f6290 TM |
1678 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) { |
1679 | /* Use that stateid */ | |
1680 | } else if (state != NULL) { | |
08e9eac4 TM |
1681 | nfs4_copy_stateid(&arg.stateid, state, current->files); |
1682 | } else | |
1da177e4 LT |
1683 | memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid)); |
1684 | ||
cccef3b9 | 1685 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
26e976a8 TM |
1686 | if (status == 0 && state != NULL) |
1687 | renew_lease(server, timestamp); | |
65e4308d | 1688 | return status; |
1da177e4 LT |
1689 | } |
1690 | ||
659bfcd6 TM |
1691 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1692 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1693 | struct nfs4_state *state) | |
1da177e4 | 1694 | { |
3e4f6290 | 1695 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
1696 | struct nfs4_exception exception = { }; |
1697 | int err; | |
1698 | do { | |
1699 | err = nfs4_handle_exception(server, | |
659bfcd6 | 1700 | _nfs4_do_setattr(inode, cred, fattr, sattr, state), |
1da177e4 LT |
1701 | &exception); |
1702 | } while (exception.retry); | |
1703 | return err; | |
1704 | } | |
1705 | ||
1706 | struct nfs4_closedata { | |
4a35bd41 | 1707 | struct path path; |
1da177e4 LT |
1708 | struct inode *inode; |
1709 | struct nfs4_state *state; | |
1710 | struct nfs_closeargs arg; | |
1711 | struct nfs_closeres res; | |
516a6af6 | 1712 | struct nfs_fattr fattr; |
26e976a8 | 1713 | unsigned long timestamp; |
1da177e4 LT |
1714 | }; |
1715 | ||
963d8fe5 | 1716 | static void nfs4_free_closedata(void *data) |
9512135d | 1717 | { |
963d8fe5 TM |
1718 | struct nfs4_closedata *calldata = data; |
1719 | struct nfs4_state_owner *sp = calldata->state->owner; | |
9512135d TM |
1720 | |
1721 | nfs4_put_open_state(calldata->state); | |
1722 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 1723 | nfs4_put_state_owner(sp); |
31f31db1 | 1724 | path_put(&calldata->path); |
9512135d TM |
1725 | kfree(calldata); |
1726 | } | |
1727 | ||
963d8fe5 | 1728 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 1729 | { |
963d8fe5 | 1730 | struct nfs4_closedata *calldata = data; |
1da177e4 | 1731 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
1732 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
1733 | ||
19ddab06 | 1734 | nfs4_sequence_done(server, &calldata->res.seq_res, task->tk_status); |
4ce70ada TM |
1735 | if (RPC_ASSASSINATED(task)) |
1736 | return; | |
1da177e4 LT |
1737 | /* hmm. we are done with the inode, and in the process of freeing |
1738 | * the state_owner. we keep this around to process errors | |
1739 | */ | |
1da177e4 LT |
1740 | switch (task->tk_status) { |
1741 | case 0: | |
45328c35 | 1742 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 1743 | renew_lease(server, calldata->timestamp); |
1da177e4 LT |
1744 | break; |
1745 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
1746 | case -NFS4ERR_OLD_STATEID: |
1747 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 1748 | case -NFS4ERR_EXPIRED: |
dc0b027d | 1749 | if (calldata->arg.fmode == 0) |
9e33bed5 | 1750 | break; |
1da177e4 | 1751 | default: |
9e33bed5 | 1752 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) { |
eedc020e | 1753 | nfs4_restart_rpc(task, server->nfs_client); |
1da177e4 LT |
1754 | return; |
1755 | } | |
1756 | } | |
19ddab06 | 1757 | nfs4_sequence_free_slot(server->nfs_client, &calldata->res.seq_res); |
516a6af6 | 1758 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
1da177e4 LT |
1759 | } |
1760 | ||
4ce70ada | 1761 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 1762 | { |
4ce70ada | 1763 | struct nfs4_closedata *calldata = data; |
9512135d | 1764 | struct nfs4_state *state = calldata->state; |
003707c7 | 1765 | int clear_rd, clear_wr, clear_rdwr; |
9512135d | 1766 | |
963d8fe5 | 1767 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 1768 | return; |
003707c7 | 1769 | |
003707c7 | 1770 | clear_rd = clear_wr = clear_rdwr = 0; |
4cecb76f | 1771 | spin_lock(&state->owner->so_lock); |
003707c7 | 1772 | /* Calculate the change in open mode */ |
e7616923 | 1773 | if (state->n_rdwr == 0) { |
003707c7 | 1774 | if (state->n_rdonly == 0) { |
003707c7 TM |
1775 | clear_rd |= test_and_clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
1776 | clear_rdwr |= test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1777 | } | |
1778 | if (state->n_wronly == 0) { | |
003707c7 TM |
1779 | clear_wr |= test_and_clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
1780 | clear_rdwr |= test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1781 | } | |
e7616923 | 1782 | } |
4cecb76f | 1783 | spin_unlock(&state->owner->so_lock); |
003707c7 | 1784 | if (!clear_rd && !clear_wr && !clear_rdwr) { |
963d8fe5 TM |
1785 | /* Note: exit _without_ calling nfs4_close_done */ |
1786 | task->tk_action = NULL; | |
9512135d TM |
1787 | return; |
1788 | } | |
516a6af6 | 1789 | nfs_fattr_init(calldata->res.fattr); |
45328c35 | 1790 | if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) { |
5138fde0 | 1791 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
dc0b027d | 1792 | calldata->arg.fmode = FMODE_READ; |
45328c35 | 1793 | } else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) { |
5138fde0 | 1794 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
dc0b027d | 1795 | calldata->arg.fmode = FMODE_WRITE; |
45328c35 | 1796 | } |
26e976a8 | 1797 | calldata->timestamp = jiffies; |
19ddab06 AA |
1798 | if (nfs4_setup_sequence((NFS_SERVER(calldata->inode))->nfs_client, |
1799 | &calldata->arg.seq_args, &calldata->res.seq_res, | |
1800 | 1, task)) | |
1801 | return; | |
5138fde0 | 1802 | rpc_call_start(task); |
1da177e4 LT |
1803 | } |
1804 | ||
963d8fe5 | 1805 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 1806 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
1807 | .rpc_call_done = nfs4_close_done, |
1808 | .rpc_release = nfs4_free_closedata, | |
1809 | }; | |
1810 | ||
1da177e4 LT |
1811 | /* |
1812 | * It is possible for data to be read/written from a mem-mapped file | |
1813 | * after the sys_close call (which hits the vfs layer as a flush). | |
1814 | * This means that we can't safely call nfsv4 close on a file until | |
1815 | * the inode is cleared. This in turn means that we are not good | |
1816 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
1817 | * share state even when we are done with one of the three share | |
1818 | * stateid's in the inode. | |
1819 | * | |
1820 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
1821 | */ | |
a49c3c77 | 1822 | int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait) |
1da177e4 | 1823 | { |
4a35bd41 | 1824 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 1825 | struct nfs4_closedata *calldata; |
b39e625b TM |
1826 | struct nfs4_state_owner *sp = state->owner; |
1827 | struct rpc_task *task; | |
5138fde0 TM |
1828 | struct rpc_message msg = { |
1829 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
1830 | .rpc_cred = state->owner->so_cred, | |
1831 | }; | |
c970aa85 TM |
1832 | struct rpc_task_setup task_setup_data = { |
1833 | .rpc_client = server->client, | |
5138fde0 | 1834 | .rpc_message = &msg, |
c970aa85 | 1835 | .callback_ops = &nfs4_close_ops, |
101070ca | 1836 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1837 | .flags = RPC_TASK_ASYNC, |
1838 | }; | |
9512135d | 1839 | int status = -ENOMEM; |
1da177e4 | 1840 | |
19ddab06 | 1841 | calldata = kzalloc(sizeof(*calldata), GFP_KERNEL); |
1da177e4 | 1842 | if (calldata == NULL) |
9512135d | 1843 | goto out; |
4a35bd41 | 1844 | calldata->inode = state->inode; |
1da177e4 | 1845 | calldata->state = state; |
4a35bd41 | 1846 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 1847 | calldata->arg.stateid = &state->open_stateid; |
34dc1ad7 BH |
1848 | if (nfs4_has_session(server->nfs_client)) |
1849 | memset(calldata->arg.stateid->data, 0, 4); /* clear seqid */ | |
1da177e4 | 1850 | /* Serialization for the sequence id */ |
cee54fc9 | 1851 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid); |
9512135d TM |
1852 | if (calldata->arg.seqid == NULL) |
1853 | goto out_free_calldata; | |
dc0b027d | 1854 | calldata->arg.fmode = 0; |
a65318bf | 1855 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 1856 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 1857 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 1858 | calldata->res.server = server; |
5f7dbd5c | 1859 | calldata->res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE; |
4a35bd41 TM |
1860 | calldata->path.mnt = mntget(path->mnt); |
1861 | calldata->path.dentry = dget(path->dentry); | |
9512135d | 1862 | |
5138fde0 TM |
1863 | msg.rpc_argp = &calldata->arg, |
1864 | msg.rpc_resp = &calldata->res, | |
c970aa85 TM |
1865 | task_setup_data.callback_data = calldata; |
1866 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
1867 | if (IS_ERR(task)) |
1868 | return PTR_ERR(task); | |
a49c3c77 TM |
1869 | status = 0; |
1870 | if (wait) | |
1871 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 1872 | rpc_put_task(task); |
a49c3c77 | 1873 | return status; |
9512135d TM |
1874 | out_free_calldata: |
1875 | kfree(calldata); | |
1876 | out: | |
b39e625b TM |
1877 | nfs4_put_open_state(state); |
1878 | nfs4_put_state_owner(sp); | |
9512135d | 1879 | return status; |
1da177e4 LT |
1880 | } |
1881 | ||
dc0b027d | 1882 | static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state, fmode_t fmode) |
02a913a7 TM |
1883 | { |
1884 | struct file *filp; | |
1b45c46c | 1885 | int ret; |
02a913a7 | 1886 | |
1b45c46c | 1887 | /* If the open_intent is for execute, we have an extra check to make */ |
dc0b027d | 1888 | if (fmode & FMODE_EXEC) { |
af22f94a | 1889 | ret = nfs_may_open(state->inode, |
1b45c46c TM |
1890 | state->owner->so_cred, |
1891 | nd->intent.open.flags); | |
1892 | if (ret < 0) | |
1893 | goto out_close; | |
1894 | } | |
4a35bd41 | 1895 | filp = lookup_instantiate_filp(nd, path->dentry, NULL); |
02a913a7 TM |
1896 | if (!IS_ERR(filp)) { |
1897 | struct nfs_open_context *ctx; | |
cd3758e3 | 1898 | ctx = nfs_file_open_context(filp); |
02a913a7 | 1899 | ctx->state = state; |
95cf959b TM |
1900 | return 0; |
1901 | } | |
1b45c46c TM |
1902 | ret = PTR_ERR(filp); |
1903 | out_close: | |
dc0b027d | 1904 | nfs4_close_sync(path, state, fmode & (FMODE_READ|FMODE_WRITE)); |
1b45c46c | 1905 | return ret; |
02a913a7 TM |
1906 | } |
1907 | ||
1908 | struct dentry * | |
1da177e4 LT |
1909 | nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd) |
1910 | { | |
ad389da7 | 1911 | struct path path = { |
4ac91378 | 1912 | .mnt = nd->path.mnt, |
ad389da7 TM |
1913 | .dentry = dentry, |
1914 | }; | |
4ac91378 | 1915 | struct dentry *parent; |
1da177e4 LT |
1916 | struct iattr attr; |
1917 | struct rpc_cred *cred; | |
1918 | struct nfs4_state *state; | |
02a913a7 | 1919 | struct dentry *res; |
dc0b027d | 1920 | fmode_t fmode = nd->intent.open.flags & (FMODE_READ | FMODE_WRITE | FMODE_EXEC); |
1da177e4 LT |
1921 | |
1922 | if (nd->flags & LOOKUP_CREATE) { | |
1923 | attr.ia_mode = nd->intent.open.create_mode; | |
1924 | attr.ia_valid = ATTR_MODE; | |
1925 | if (!IS_POSIXACL(dir)) | |
ce3b0f8d | 1926 | attr.ia_mode &= ~current_umask(); |
1da177e4 LT |
1927 | } else { |
1928 | attr.ia_valid = 0; | |
1929 | BUG_ON(nd->intent.open.flags & O_CREAT); | |
1930 | } | |
1931 | ||
98a8e323 | 1932 | cred = rpc_lookup_cred(); |
1da177e4 | 1933 | if (IS_ERR(cred)) |
02a913a7 | 1934 | return (struct dentry *)cred; |
565277f6 TM |
1935 | parent = dentry->d_parent; |
1936 | /* Protect against concurrent sillydeletes */ | |
1937 | nfs_block_sillyrename(parent); | |
dc0b027d | 1938 | state = nfs4_do_open(dir, &path, fmode, nd->intent.open.flags, &attr, cred); |
1da177e4 | 1939 | put_rpccred(cred); |
02a913a7 | 1940 | if (IS_ERR(state)) { |
d75340cc | 1941 | if (PTR_ERR(state) == -ENOENT) { |
02a913a7 | 1942 | d_add(dentry, NULL); |
d75340cc TM |
1943 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
1944 | } | |
565277f6 | 1945 | nfs_unblock_sillyrename(parent); |
02a913a7 TM |
1946 | return (struct dentry *)state; |
1947 | } | |
24ac23ab | 1948 | res = d_add_unique(dentry, igrab(state->inode)); |
02a913a7 | 1949 | if (res != NULL) |
deee9369 | 1950 | path.dentry = res; |
d75340cc | 1951 | nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir)); |
565277f6 | 1952 | nfs_unblock_sillyrename(parent); |
dc0b027d | 1953 | nfs4_intent_set_file(nd, &path, state, fmode); |
02a913a7 | 1954 | return res; |
1da177e4 LT |
1955 | } |
1956 | ||
1957 | int | |
02a913a7 | 1958 | nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, struct nameidata *nd) |
1da177e4 | 1959 | { |
ad389da7 | 1960 | struct path path = { |
4ac91378 | 1961 | .mnt = nd->path.mnt, |
ad389da7 TM |
1962 | .dentry = dentry, |
1963 | }; | |
1da177e4 LT |
1964 | struct rpc_cred *cred; |
1965 | struct nfs4_state *state; | |
dc0b027d | 1966 | fmode_t fmode = openflags & (FMODE_READ | FMODE_WRITE); |
1da177e4 | 1967 | |
98a8e323 | 1968 | cred = rpc_lookup_cred(); |
1da177e4 LT |
1969 | if (IS_ERR(cred)) |
1970 | return PTR_ERR(cred); | |
dc0b027d | 1971 | state = nfs4_do_open(dir, &path, fmode, openflags, NULL, cred); |
1da177e4 | 1972 | put_rpccred(cred); |
02a913a7 TM |
1973 | if (IS_ERR(state)) { |
1974 | switch (PTR_ERR(state)) { | |
1975 | case -EPERM: | |
1976 | case -EACCES: | |
1977 | case -EDQUOT: | |
1978 | case -ENOSPC: | |
1979 | case -EROFS: | |
1980 | lookup_instantiate_filp(nd, (struct dentry *)state, NULL); | |
1981 | return 1; | |
b87c0adf CL |
1982 | default: |
1983 | goto out_drop; | |
02a913a7 | 1984 | } |
02a913a7 | 1985 | } |
24ac23ab | 1986 | if (state->inode == dentry->d_inode) { |
d75340cc | 1987 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
dc0b027d | 1988 | nfs4_intent_set_file(nd, &path, state, fmode); |
1da177e4 LT |
1989 | return 1; |
1990 | } | |
dc0b027d | 1991 | nfs4_close_sync(&path, state, fmode); |
02a913a7 TM |
1992 | out_drop: |
1993 | d_drop(dentry); | |
1da177e4 LT |
1994 | return 0; |
1995 | } | |
1996 | ||
1185a552 | 1997 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
1998 | { |
1999 | if (ctx->state == NULL) | |
2000 | return; | |
2001 | if (is_sync) | |
2002 | nfs4_close_sync(&ctx->path, ctx->state, ctx->mode); | |
2003 | else | |
2004 | nfs4_close_state(&ctx->path, ctx->state, ctx->mode); | |
2005 | } | |
1da177e4 LT |
2006 | |
2007 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2008 | { | |
43652ad5 BH |
2009 | struct nfs4_server_caps_arg args = { |
2010 | .fhandle = fhandle, | |
2011 | }; | |
1da177e4 LT |
2012 | struct nfs4_server_caps_res res = {}; |
2013 | struct rpc_message msg = { | |
2014 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2015 | .rpc_argp = &args, |
1da177e4 LT |
2016 | .rpc_resp = &res, |
2017 | }; | |
2018 | int status; | |
2019 | ||
cccef3b9 | 2020 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2021 | if (status == 0) { |
2022 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2023 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2024 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2025 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2026 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2027 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2028 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2029 | server->caps |= NFS_CAP_ACLS; | |
2030 | if (res.has_links != 0) | |
2031 | server->caps |= NFS_CAP_HARDLINKS; | |
2032 | if (res.has_symlinks != 0) | |
2033 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2034 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2035 | server->caps |= NFS_CAP_FILEID; | |
2036 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2037 | server->caps |= NFS_CAP_MODE; | |
2038 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2039 | server->caps |= NFS_CAP_NLINK; | |
2040 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2041 | server->caps |= NFS_CAP_OWNER; | |
2042 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2043 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2044 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2045 | server->caps |= NFS_CAP_ATIME; | |
2046 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2047 | server->caps |= NFS_CAP_CTIME; | |
2048 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2049 | server->caps |= NFS_CAP_MTIME; | |
2050 | ||
a65318bf TM |
2051 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2052 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2053 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 LT |
2054 | server->acl_bitmask = res.acl_bitmask; |
2055 | } | |
cccef3b9 | 2056 | |
1da177e4 LT |
2057 | return status; |
2058 | } | |
2059 | ||
55a97593 | 2060 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2061 | { |
2062 | struct nfs4_exception exception = { }; | |
2063 | int err; | |
2064 | do { | |
2065 | err = nfs4_handle_exception(server, | |
2066 | _nfs4_server_capabilities(server, fhandle), | |
2067 | &exception); | |
2068 | } while (exception.retry); | |
2069 | return err; | |
2070 | } | |
2071 | ||
2072 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2073 | struct nfs_fsinfo *info) | |
2074 | { | |
1da177e4 LT |
2075 | struct nfs4_lookup_root_arg args = { |
2076 | .bitmask = nfs4_fattr_bitmap, | |
2077 | }; | |
2078 | struct nfs4_lookup_res res = { | |
2079 | .server = server, | |
0e574af1 | 2080 | .fattr = info->fattr, |
1da177e4 LT |
2081 | .fh = fhandle, |
2082 | }; | |
2083 | struct rpc_message msg = { | |
2084 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2085 | .rpc_argp = &args, | |
2086 | .rpc_resp = &res, | |
2087 | }; | |
008f55d0 | 2088 | |
0e574af1 | 2089 | nfs_fattr_init(info->fattr); |
fccba804 | 2090 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2091 | } |
2092 | ||
2093 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2094 | struct nfs_fsinfo *info) | |
2095 | { | |
2096 | struct nfs4_exception exception = { }; | |
2097 | int err; | |
2098 | do { | |
2099 | err = nfs4_handle_exception(server, | |
2100 | _nfs4_lookup_root(server, fhandle, info), | |
2101 | &exception); | |
2102 | } while (exception.retry); | |
2103 | return err; | |
2104 | } | |
2105 | ||
54ceac45 DH |
2106 | /* |
2107 | * get the file handle for the "/" directory on the server | |
2108 | */ | |
1da177e4 | 2109 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2110 | struct nfs_fsinfo *info) |
1da177e4 | 2111 | { |
1da177e4 LT |
2112 | int status; |
2113 | ||
1da177e4 | 2114 | status = nfs4_lookup_root(server, fhandle, info); |
1da177e4 LT |
2115 | if (status == 0) |
2116 | status = nfs4_server_capabilities(server, fhandle); | |
2117 | if (status == 0) | |
2118 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2119 | return nfs4_map_errors(status); |
1da177e4 LT |
2120 | } |
2121 | ||
6b97fd3d MN |
2122 | /* |
2123 | * Get locations and (maybe) other attributes of a referral. | |
2124 | * Note that we'll actually follow the referral later when | |
2125 | * we detect fsid mismatch in inode revalidation | |
2126 | */ | |
56659e99 | 2127 | static int nfs4_get_referral(struct inode *dir, const struct qstr *name, struct nfs_fattr *fattr, struct nfs_fh *fhandle) |
6b97fd3d MN |
2128 | { |
2129 | int status = -ENOMEM; | |
2130 | struct page *page = NULL; | |
2131 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2132 | |
2133 | page = alloc_page(GFP_KERNEL); | |
2134 | if (page == NULL) | |
2135 | goto out; | |
2136 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2137 | if (locations == NULL) | |
2138 | goto out; | |
2139 | ||
c228fd3a | 2140 | status = nfs4_proc_fs_locations(dir, name, locations, page); |
6b97fd3d MN |
2141 | if (status != 0) |
2142 | goto out; | |
2143 | /* Make sure server returned a different fsid for the referral */ | |
2144 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
3110ff80 | 2145 | dprintk("%s: server did not return a different fsid for a referral at %s\n", __func__, name->name); |
6b97fd3d MN |
2146 | status = -EIO; |
2147 | goto out; | |
2148 | } | |
2149 | ||
2150 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); | |
2151 | fattr->valid |= NFS_ATTR_FATTR_V4_REFERRAL; | |
2152 | if (!fattr->mode) | |
2153 | fattr->mode = S_IFDIR; | |
2154 | memset(fhandle, 0, sizeof(struct nfs_fh)); | |
2155 | out: | |
2156 | if (page) | |
2157 | __free_page(page); | |
2158 | if (locations) | |
2159 | kfree(locations); | |
2160 | return status; | |
2161 | } | |
2162 | ||
1da177e4 LT |
2163 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2164 | { | |
2165 | struct nfs4_getattr_arg args = { | |
2166 | .fh = fhandle, | |
2167 | .bitmask = server->attr_bitmask, | |
2168 | }; | |
2169 | struct nfs4_getattr_res res = { | |
2170 | .fattr = fattr, | |
2171 | .server = server, | |
2172 | }; | |
2173 | struct rpc_message msg = { | |
2174 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2175 | .rpc_argp = &args, | |
2176 | .rpc_resp = &res, | |
2177 | }; | |
2178 | ||
0e574af1 | 2179 | nfs_fattr_init(fattr); |
cccef3b9 | 2180 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2181 | } |
2182 | ||
2183 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2184 | { | |
2185 | struct nfs4_exception exception = { }; | |
2186 | int err; | |
2187 | do { | |
2188 | err = nfs4_handle_exception(server, | |
2189 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2190 | &exception); | |
2191 | } while (exception.retry); | |
2192 | return err; | |
2193 | } | |
2194 | ||
2195 | /* | |
2196 | * The file is not closed if it is opened due to the a request to change | |
2197 | * the size of the file. The open call will not be needed once the | |
2198 | * VFS layer lookup-intents are implemented. | |
2199 | * | |
2200 | * Close is called when the inode is destroyed. | |
2201 | * If we haven't opened the file for O_WRONLY, we | |
2202 | * need to in the size_change case to obtain a stateid. | |
2203 | * | |
2204 | * Got race? | |
2205 | * Because OPEN is always done by name in nfsv4, it is | |
2206 | * possible that we opened a different file by the same | |
2207 | * name. We can recognize this race condition, but we | |
2208 | * can't do anything about it besides returning an error. | |
2209 | * | |
2210 | * This will be fixed with VFS changes (lookup-intent). | |
2211 | */ | |
2212 | static int | |
2213 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2214 | struct iattr *sattr) | |
2215 | { | |
08e9eac4 | 2216 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2217 | struct rpc_cred *cred = NULL; |
d530838b | 2218 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2219 | int status; |
2220 | ||
0e574af1 | 2221 | nfs_fattr_init(fattr); |
1da177e4 | 2222 | |
d530838b | 2223 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2224 | if (sattr->ia_valid & ATTR_FILE) { |
2225 | struct nfs_open_context *ctx; | |
2226 | ||
2227 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2228 | if (ctx) { |
2229 | cred = ctx->cred; | |
2230 | state = ctx->state; | |
2231 | } | |
659bfcd6 | 2232 | } |
08e9eac4 | 2233 | |
659bfcd6 | 2234 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2235 | if (status == 0) |
2236 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2237 | return status; |
2238 | } | |
2239 | ||
56659e99 TM |
2240 | static int _nfs4_proc_lookupfh(struct nfs_server *server, const struct nfs_fh *dirfh, |
2241 | const struct qstr *name, struct nfs_fh *fhandle, | |
2b3de441 DH |
2242 | struct nfs_fattr *fattr) |
2243 | { | |
2244 | int status; | |
2245 | struct nfs4_lookup_arg args = { | |
2246 | .bitmask = server->attr_bitmask, | |
2247 | .dir_fh = dirfh, | |
2248 | .name = name, | |
2249 | }; | |
2250 | struct nfs4_lookup_res res = { | |
2251 | .server = server, | |
2252 | .fattr = fattr, | |
2253 | .fh = fhandle, | |
2254 | }; | |
2255 | struct rpc_message msg = { | |
2256 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2257 | .rpc_argp = &args, | |
2258 | .rpc_resp = &res, | |
2259 | }; | |
2260 | ||
2261 | nfs_fattr_init(fattr); | |
2262 | ||
2263 | dprintk("NFS call lookupfh %s\n", name->name); | |
cccef3b9 | 2264 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
2b3de441 | 2265 | dprintk("NFS reply lookupfh: %d\n", status); |
2b3de441 DH |
2266 | return status; |
2267 | } | |
2268 | ||
2269 | static int nfs4_proc_lookupfh(struct nfs_server *server, struct nfs_fh *dirfh, | |
2270 | struct qstr *name, struct nfs_fh *fhandle, | |
2271 | struct nfs_fattr *fattr) | |
2272 | { | |
2273 | struct nfs4_exception exception = { }; | |
2274 | int err; | |
2275 | do { | |
4e56e082 TM |
2276 | err = _nfs4_proc_lookupfh(server, dirfh, name, fhandle, fattr); |
2277 | /* FIXME: !!!! */ | |
2278 | if (err == -NFS4ERR_MOVED) { | |
2279 | err = -EREMOTE; | |
2280 | break; | |
2281 | } | |
2282 | err = nfs4_handle_exception(server, err, &exception); | |
2b3de441 DH |
2283 | } while (exception.retry); |
2284 | return err; | |
2285 | } | |
2286 | ||
56659e99 | 2287 | static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, |
1da177e4 LT |
2288 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2289 | { | |
4e56e082 | 2290 | int status; |
1da177e4 LT |
2291 | |
2292 | dprintk("NFS call lookup %s\n", name->name); | |
4e56e082 | 2293 | status = _nfs4_proc_lookupfh(NFS_SERVER(dir), NFS_FH(dir), name, fhandle, fattr); |
6b97fd3d MN |
2294 | if (status == -NFS4ERR_MOVED) |
2295 | status = nfs4_get_referral(dir, name, fattr, fhandle); | |
1da177e4 LT |
2296 | dprintk("NFS reply lookup: %d\n", status); |
2297 | return status; | |
2298 | } | |
2299 | ||
2300 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2301 | { | |
2302 | struct nfs4_exception exception = { }; | |
2303 | int err; | |
2304 | do { | |
2305 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2306 | _nfs4_proc_lookup(dir, name, fhandle, fattr), | |
2307 | &exception); | |
2308 | } while (exception.retry); | |
2309 | return err; | |
2310 | } | |
2311 | ||
2312 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2313 | { | |
76b32999 TM |
2314 | struct nfs_server *server = NFS_SERVER(inode); |
2315 | struct nfs_fattr fattr; | |
1da177e4 LT |
2316 | struct nfs4_accessargs args = { |
2317 | .fh = NFS_FH(inode), | |
76b32999 TM |
2318 | .bitmask = server->attr_bitmask, |
2319 | }; | |
2320 | struct nfs4_accessres res = { | |
2321 | .server = server, | |
2322 | .fattr = &fattr, | |
1da177e4 | 2323 | }; |
1da177e4 LT |
2324 | struct rpc_message msg = { |
2325 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2326 | .rpc_argp = &args, | |
2327 | .rpc_resp = &res, | |
2328 | .rpc_cred = entry->cred, | |
2329 | }; | |
2330 | int mode = entry->mask; | |
2331 | int status; | |
2332 | ||
2333 | /* | |
2334 | * Determine which access bits we want to ask for... | |
2335 | */ | |
2336 | if (mode & MAY_READ) | |
2337 | args.access |= NFS4_ACCESS_READ; | |
2338 | if (S_ISDIR(inode->i_mode)) { | |
2339 | if (mode & MAY_WRITE) | |
2340 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2341 | if (mode & MAY_EXEC) | |
2342 | args.access |= NFS4_ACCESS_LOOKUP; | |
2343 | } else { | |
2344 | if (mode & MAY_WRITE) | |
2345 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2346 | if (mode & MAY_EXEC) | |
2347 | args.access |= NFS4_ACCESS_EXECUTE; | |
2348 | } | |
76b32999 | 2349 | nfs_fattr_init(&fattr); |
cccef3b9 | 2350 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2351 | if (!status) { |
2352 | entry->mask = 0; | |
2353 | if (res.access & NFS4_ACCESS_READ) | |
2354 | entry->mask |= MAY_READ; | |
2355 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
2356 | entry->mask |= MAY_WRITE; | |
2357 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
2358 | entry->mask |= MAY_EXEC; | |
76b32999 | 2359 | nfs_refresh_inode(inode, &fattr); |
1da177e4 LT |
2360 | } |
2361 | return status; | |
2362 | } | |
2363 | ||
2364 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2365 | { | |
2366 | struct nfs4_exception exception = { }; | |
2367 | int err; | |
2368 | do { | |
2369 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2370 | _nfs4_proc_access(inode, entry), | |
2371 | &exception); | |
2372 | } while (exception.retry); | |
2373 | return err; | |
2374 | } | |
2375 | ||
2376 | /* | |
2377 | * TODO: For the time being, we don't try to get any attributes | |
2378 | * along with any of the zero-copy operations READ, READDIR, | |
2379 | * READLINK, WRITE. | |
2380 | * | |
2381 | * In the case of the first three, we want to put the GETATTR | |
2382 | * after the read-type operation -- this is because it is hard | |
2383 | * to predict the length of a GETATTR response in v4, and thus | |
2384 | * align the READ data correctly. This means that the GETATTR | |
2385 | * may end up partially falling into the page cache, and we should | |
2386 | * shift it into the 'tail' of the xdr_buf before processing. | |
2387 | * To do this efficiently, we need to know the total length | |
2388 | * of data received, which doesn't seem to be available outside | |
2389 | * of the RPC layer. | |
2390 | * | |
2391 | * In the case of WRITE, we also want to put the GETATTR after | |
2392 | * the operation -- in this case because we want to make sure | |
2393 | * we get the post-operation mtime and size. This means that | |
2394 | * we can't use xdr_encode_pages() as written: we need a variant | |
2395 | * of it which would leave room in the 'tail' iovec. | |
2396 | * | |
2397 | * Both of these changes to the XDR layer would in fact be quite | |
2398 | * minor, but I decided to leave them for a subsequent patch. | |
2399 | */ | |
2400 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2401 | unsigned int pgbase, unsigned int pglen) | |
2402 | { | |
2403 | struct nfs4_readlink args = { | |
2404 | .fh = NFS_FH(inode), | |
2405 | .pgbase = pgbase, | |
2406 | .pglen = pglen, | |
2407 | .pages = &page, | |
2408 | }; | |
f50c7000 | 2409 | struct nfs4_readlink_res res; |
1da177e4 LT |
2410 | struct rpc_message msg = { |
2411 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2412 | .rpc_argp = &args, | |
f50c7000 | 2413 | .rpc_resp = &res, |
1da177e4 LT |
2414 | }; |
2415 | ||
cccef3b9 | 2416 | return nfs4_call_sync(NFS_SERVER(inode), &msg, &args, &res, 0); |
1da177e4 LT |
2417 | } |
2418 | ||
2419 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2420 | unsigned int pgbase, unsigned int pglen) | |
2421 | { | |
2422 | struct nfs4_exception exception = { }; | |
2423 | int err; | |
2424 | do { | |
2425 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2426 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2427 | &exception); | |
2428 | } while (exception.retry); | |
2429 | return err; | |
2430 | } | |
2431 | ||
1da177e4 LT |
2432 | /* |
2433 | * Got race? | |
2434 | * We will need to arrange for the VFS layer to provide an atomic open. | |
2435 | * Until then, this create/open method is prone to inefficiency and race | |
2436 | * conditions due to the lookup, create, and open VFS calls from sys_open() | |
2437 | * placed on the wire. | |
2438 | * | |
2439 | * Given the above sorry state of affairs, I'm simply sending an OPEN. | |
2440 | * The file will be opened again in the subsequent VFS open call | |
2441 | * (nfs4_proc_file_open). | |
2442 | * | |
2443 | * The open for read will just hang around to be used by any process that | |
2444 | * opens the file O_RDONLY. This will all be resolved with the VFS changes. | |
2445 | */ | |
2446 | ||
2447 | static int | |
2448 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
02a913a7 | 2449 | int flags, struct nameidata *nd) |
1da177e4 | 2450 | { |
ad389da7 | 2451 | struct path path = { |
4ac91378 | 2452 | .mnt = nd->path.mnt, |
ad389da7 TM |
2453 | .dentry = dentry, |
2454 | }; | |
1da177e4 LT |
2455 | struct nfs4_state *state; |
2456 | struct rpc_cred *cred; | |
dc0b027d | 2457 | fmode_t fmode = flags & (FMODE_READ | FMODE_WRITE); |
1da177e4 LT |
2458 | int status = 0; |
2459 | ||
98a8e323 | 2460 | cred = rpc_lookup_cred(); |
1da177e4 LT |
2461 | if (IS_ERR(cred)) { |
2462 | status = PTR_ERR(cred); | |
2463 | goto out; | |
2464 | } | |
dc0b027d | 2465 | state = nfs4_do_open(dir, &path, fmode, flags, sattr, cred); |
d4d9cdcb | 2466 | d_drop(dentry); |
1da177e4 LT |
2467 | if (IS_ERR(state)) { |
2468 | status = PTR_ERR(state); | |
659bfcd6 | 2469 | goto out_putcred; |
1da177e4 | 2470 | } |
d4d9cdcb | 2471 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2472 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
1da177e4 LT |
2473 | if (flags & O_EXCL) { |
2474 | struct nfs_fattr fattr; | |
659bfcd6 | 2475 | status = nfs4_do_setattr(state->inode, cred, &fattr, sattr, state); |
02a913a7 | 2476 | if (status == 0) |
65e4308d | 2477 | nfs_setattr_update_inode(state->inode, sattr); |
aa53ed54 | 2478 | nfs_post_op_update_inode(state->inode, &fattr); |
02a913a7 | 2479 | } |
ad389da7 | 2480 | if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0) |
dc0b027d | 2481 | status = nfs4_intent_set_file(nd, &path, state, fmode); |
02a913a7 | 2482 | else |
dc0b027d | 2483 | nfs4_close_sync(&path, state, fmode); |
659bfcd6 TM |
2484 | out_putcred: |
2485 | put_rpccred(cred); | |
1da177e4 LT |
2486 | out: |
2487 | return status; | |
2488 | } | |
2489 | ||
2490 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2491 | { | |
16e42959 | 2492 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2493 | struct nfs_removeargs args = { |
1da177e4 | 2494 | .fh = NFS_FH(dir), |
4fdc17b2 TM |
2495 | .name.len = name->len, |
2496 | .name.name = name->name, | |
16e42959 TM |
2497 | .bitmask = server->attr_bitmask, |
2498 | }; | |
4fdc17b2 | 2499 | struct nfs_removeres res = { |
16e42959 | 2500 | .server = server, |
1da177e4 | 2501 | }; |
1da177e4 | 2502 | struct rpc_message msg = { |
4fdc17b2 TM |
2503 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2504 | .rpc_argp = &args, | |
2505 | .rpc_resp = &res, | |
1da177e4 LT |
2506 | }; |
2507 | int status; | |
2508 | ||
4fdc17b2 | 2509 | nfs_fattr_init(&res.dir_attr); |
cccef3b9 | 2510 | status = nfs4_call_sync(server, &msg, &args, &res, 1); |
16e42959 TM |
2511 | if (status == 0) { |
2512 | update_changeattr(dir, &res.cinfo); | |
4fdc17b2 | 2513 | nfs_post_op_update_inode(dir, &res.dir_attr); |
16e42959 | 2514 | } |
1da177e4 LT |
2515 | return status; |
2516 | } | |
2517 | ||
2518 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2519 | { | |
2520 | struct nfs4_exception exception = { }; | |
2521 | int err; | |
2522 | do { | |
2523 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2524 | _nfs4_proc_remove(dir, name), | |
2525 | &exception); | |
2526 | } while (exception.retry); | |
2527 | return err; | |
2528 | } | |
2529 | ||
e4eff1a6 | 2530 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2531 | { |
e4eff1a6 TM |
2532 | struct nfs_server *server = NFS_SERVER(dir); |
2533 | struct nfs_removeargs *args = msg->rpc_argp; | |
2534 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2535 | |
a65318bf | 2536 | args->bitmask = server->cache_consistency_bitmask; |
e4eff1a6 | 2537 | res->server = server; |
1da177e4 | 2538 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
1da177e4 LT |
2539 | } |
2540 | ||
e4eff1a6 | 2541 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2542 | { |
e4eff1a6 TM |
2543 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2544 | ||
472cfbd9 | 2545 | nfs4_sequence_done(res->server, &res->seq_res, task->tk_status); |
9e33bed5 | 2546 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 | 2547 | return 0; |
472cfbd9 | 2548 | nfs4_sequence_free_slot(res->server->nfs_client, &res->seq_res); |
e4eff1a6 TM |
2549 | update_changeattr(dir, &res->cinfo); |
2550 | nfs_post_op_update_inode(dir, &res->dir_attr); | |
2551 | return 1; | |
1da177e4 LT |
2552 | } |
2553 | ||
2554 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2555 | struct inode *new_dir, struct qstr *new_name) | |
2556 | { | |
6caf2c82 | 2557 | struct nfs_server *server = NFS_SERVER(old_dir); |
1da177e4 LT |
2558 | struct nfs4_rename_arg arg = { |
2559 | .old_dir = NFS_FH(old_dir), | |
2560 | .new_dir = NFS_FH(new_dir), | |
2561 | .old_name = old_name, | |
2562 | .new_name = new_name, | |
6caf2c82 TM |
2563 | .bitmask = server->attr_bitmask, |
2564 | }; | |
2565 | struct nfs_fattr old_fattr, new_fattr; | |
2566 | struct nfs4_rename_res res = { | |
2567 | .server = server, | |
2568 | .old_fattr = &old_fattr, | |
2569 | .new_fattr = &new_fattr, | |
1da177e4 | 2570 | }; |
1da177e4 LT |
2571 | struct rpc_message msg = { |
2572 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2573 | .rpc_argp = &arg, | |
2574 | .rpc_resp = &res, | |
2575 | }; | |
2576 | int status; | |
2577 | ||
6caf2c82 TM |
2578 | nfs_fattr_init(res.old_fattr); |
2579 | nfs_fattr_init(res.new_fattr); | |
cccef3b9 | 2580 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
1da177e4 LT |
2581 | |
2582 | if (!status) { | |
2583 | update_changeattr(old_dir, &res.old_cinfo); | |
6caf2c82 | 2584 | nfs_post_op_update_inode(old_dir, res.old_fattr); |
1da177e4 | 2585 | update_changeattr(new_dir, &res.new_cinfo); |
6caf2c82 | 2586 | nfs_post_op_update_inode(new_dir, res.new_fattr); |
1da177e4 LT |
2587 | } |
2588 | return status; | |
2589 | } | |
2590 | ||
2591 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2592 | struct inode *new_dir, struct qstr *new_name) | |
2593 | { | |
2594 | struct nfs4_exception exception = { }; | |
2595 | int err; | |
2596 | do { | |
2597 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2598 | _nfs4_proc_rename(old_dir, old_name, | |
2599 | new_dir, new_name), | |
2600 | &exception); | |
2601 | } while (exception.retry); | |
2602 | return err; | |
2603 | } | |
2604 | ||
2605 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2606 | { | |
91ba2eee | 2607 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2608 | struct nfs4_link_arg arg = { |
2609 | .fh = NFS_FH(inode), | |
2610 | .dir_fh = NFS_FH(dir), | |
2611 | .name = name, | |
91ba2eee TM |
2612 | .bitmask = server->attr_bitmask, |
2613 | }; | |
2614 | struct nfs_fattr fattr, dir_attr; | |
2615 | struct nfs4_link_res res = { | |
2616 | .server = server, | |
2617 | .fattr = &fattr, | |
2618 | .dir_attr = &dir_attr, | |
1da177e4 | 2619 | }; |
1da177e4 LT |
2620 | struct rpc_message msg = { |
2621 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
2622 | .rpc_argp = &arg, | |
91ba2eee | 2623 | .rpc_resp = &res, |
1da177e4 LT |
2624 | }; |
2625 | int status; | |
2626 | ||
91ba2eee TM |
2627 | nfs_fattr_init(res.fattr); |
2628 | nfs_fattr_init(res.dir_attr); | |
cccef3b9 | 2629 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
91ba2eee TM |
2630 | if (!status) { |
2631 | update_changeattr(dir, &res.cinfo); | |
2632 | nfs_post_op_update_inode(dir, res.dir_attr); | |
73a3d07c | 2633 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 2634 | } |
1da177e4 LT |
2635 | |
2636 | return status; | |
2637 | } | |
2638 | ||
2639 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2640 | { | |
2641 | struct nfs4_exception exception = { }; | |
2642 | int err; | |
2643 | do { | |
2644 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2645 | _nfs4_proc_link(inode, dir, name), | |
2646 | &exception); | |
2647 | } while (exception.retry); | |
2648 | return err; | |
2649 | } | |
2650 | ||
57dc9a57 TM |
2651 | struct nfs4_createdata { |
2652 | struct rpc_message msg; | |
2653 | struct nfs4_create_arg arg; | |
2654 | struct nfs4_create_res res; | |
2655 | struct nfs_fh fh; | |
2656 | struct nfs_fattr fattr; | |
2657 | struct nfs_fattr dir_fattr; | |
2658 | }; | |
2659 | ||
2660 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
2661 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
2662 | { | |
2663 | struct nfs4_createdata *data; | |
2664 | ||
2665 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
2666 | if (data != NULL) { | |
2667 | struct nfs_server *server = NFS_SERVER(dir); | |
2668 | ||
2669 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
2670 | data->msg.rpc_argp = &data->arg; | |
2671 | data->msg.rpc_resp = &data->res; | |
2672 | data->arg.dir_fh = NFS_FH(dir); | |
2673 | data->arg.server = server; | |
2674 | data->arg.name = name; | |
2675 | data->arg.attrs = sattr; | |
2676 | data->arg.ftype = ftype; | |
2677 | data->arg.bitmask = server->attr_bitmask; | |
2678 | data->res.server = server; | |
2679 | data->res.fh = &data->fh; | |
2680 | data->res.fattr = &data->fattr; | |
2681 | data->res.dir_fattr = &data->dir_fattr; | |
2682 | nfs_fattr_init(data->res.fattr); | |
2683 | nfs_fattr_init(data->res.dir_fattr); | |
2684 | } | |
2685 | return data; | |
2686 | } | |
2687 | ||
2688 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
2689 | { | |
cccef3b9 AA |
2690 | int status = nfs4_call_sync(NFS_SERVER(dir), &data->msg, |
2691 | &data->arg, &data->res, 1); | |
57dc9a57 TM |
2692 | if (status == 0) { |
2693 | update_changeattr(dir, &data->res.dir_cinfo); | |
2694 | nfs_post_op_update_inode(dir, data->res.dir_fattr); | |
2695 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); | |
2696 | } | |
2697 | return status; | |
2698 | } | |
2699 | ||
2700 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
2701 | { | |
2702 | kfree(data); | |
2703 | } | |
2704 | ||
4f390c15 | 2705 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2706 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 2707 | { |
57dc9a57 TM |
2708 | struct nfs4_createdata *data; |
2709 | int status = -ENAMETOOLONG; | |
1da177e4 | 2710 | |
94a6d753 | 2711 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 2712 | goto out; |
4f390c15 | 2713 | |
57dc9a57 TM |
2714 | status = -ENOMEM; |
2715 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
2716 | if (data == NULL) | |
2717 | goto out; | |
2718 | ||
2719 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
2720 | data->arg.u.symlink.pages = &page; | |
2721 | data->arg.u.symlink.len = len; | |
1da177e4 | 2722 | |
57dc9a57 TM |
2723 | status = nfs4_do_create(dir, dentry, data); |
2724 | ||
2725 | nfs4_free_createdata(data); | |
2726 | out: | |
1da177e4 LT |
2727 | return status; |
2728 | } | |
2729 | ||
4f390c15 | 2730 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2731 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
2732 | { |
2733 | struct nfs4_exception exception = { }; | |
2734 | int err; | |
2735 | do { | |
2736 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
2737 | _nfs4_proc_symlink(dir, dentry, page, |
2738 | len, sattr), | |
1da177e4 LT |
2739 | &exception); |
2740 | } while (exception.retry); | |
2741 | return err; | |
2742 | } | |
2743 | ||
2744 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2745 | struct iattr *sattr) | |
2746 | { | |
57dc9a57 TM |
2747 | struct nfs4_createdata *data; |
2748 | int status = -ENOMEM; | |
1da177e4 | 2749 | |
57dc9a57 TM |
2750 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
2751 | if (data == NULL) | |
2752 | goto out; | |
2753 | ||
2754 | status = nfs4_do_create(dir, dentry, data); | |
2755 | ||
2756 | nfs4_free_createdata(data); | |
2757 | out: | |
1da177e4 LT |
2758 | return status; |
2759 | } | |
2760 | ||
2761 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2762 | struct iattr *sattr) | |
2763 | { | |
2764 | struct nfs4_exception exception = { }; | |
2765 | int err; | |
2766 | do { | |
2767 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2768 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
2769 | &exception); | |
2770 | } while (exception.retry); | |
2771 | return err; | |
2772 | } | |
2773 | ||
2774 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
2775 | u64 cookie, struct page *page, unsigned int count, int plus) | |
2776 | { | |
2777 | struct inode *dir = dentry->d_inode; | |
2778 | struct nfs4_readdir_arg args = { | |
2779 | .fh = NFS_FH(dir), | |
2780 | .pages = &page, | |
2781 | .pgbase = 0, | |
2782 | .count = count, | |
96d25e53 | 2783 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
1da177e4 LT |
2784 | }; |
2785 | struct nfs4_readdir_res res; | |
2786 | struct rpc_message msg = { | |
2787 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
2788 | .rpc_argp = &args, | |
2789 | .rpc_resp = &res, | |
2790 | .rpc_cred = cred, | |
2791 | }; | |
2792 | int status; | |
2793 | ||
3110ff80 | 2794 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
2795 | dentry->d_parent->d_name.name, |
2796 | dentry->d_name.name, | |
2797 | (unsigned long long)cookie); | |
1da177e4 LT |
2798 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
2799 | res.pgbase = args.pgbase; | |
cccef3b9 | 2800 | status = nfs4_call_sync(NFS_SERVER(dir), &msg, &args, &res, 0); |
1da177e4 LT |
2801 | if (status == 0) |
2802 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); | |
c4812998 TM |
2803 | |
2804 | nfs_invalidate_atime(dir); | |
2805 | ||
3110ff80 | 2806 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
2807 | return status; |
2808 | } | |
2809 | ||
2810 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
2811 | u64 cookie, struct page *page, unsigned int count, int plus) | |
2812 | { | |
2813 | struct nfs4_exception exception = { }; | |
2814 | int err; | |
2815 | do { | |
2816 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
2817 | _nfs4_proc_readdir(dentry, cred, cookie, | |
2818 | page, count, plus), | |
2819 | &exception); | |
2820 | } while (exception.retry); | |
2821 | return err; | |
2822 | } | |
2823 | ||
2824 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2825 | struct iattr *sattr, dev_t rdev) | |
2826 | { | |
57dc9a57 TM |
2827 | struct nfs4_createdata *data; |
2828 | int mode = sattr->ia_mode; | |
2829 | int status = -ENOMEM; | |
1da177e4 LT |
2830 | |
2831 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
2832 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
57dc9a57 TM |
2833 | |
2834 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); | |
2835 | if (data == NULL) | |
2836 | goto out; | |
2837 | ||
1da177e4 | 2838 | if (S_ISFIFO(mode)) |
57dc9a57 | 2839 | data->arg.ftype = NF4FIFO; |
1da177e4 | 2840 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
2841 | data->arg.ftype = NF4BLK; |
2842 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
2843 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
2844 | } |
2845 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
2846 | data->arg.ftype = NF4CHR; |
2847 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
2848 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 | 2849 | } |
1da177e4 | 2850 | |
57dc9a57 TM |
2851 | status = nfs4_do_create(dir, dentry, data); |
2852 | ||
2853 | nfs4_free_createdata(data); | |
2854 | out: | |
1da177e4 LT |
2855 | return status; |
2856 | } | |
2857 | ||
2858 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2859 | struct iattr *sattr, dev_t rdev) | |
2860 | { | |
2861 | struct nfs4_exception exception = { }; | |
2862 | int err; | |
2863 | do { | |
2864 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2865 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
2866 | &exception); | |
2867 | } while (exception.retry); | |
2868 | return err; | |
2869 | } | |
2870 | ||
2871 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
2872 | struct nfs_fsstat *fsstat) | |
2873 | { | |
2874 | struct nfs4_statfs_arg args = { | |
2875 | .fh = fhandle, | |
2876 | .bitmask = server->attr_bitmask, | |
2877 | }; | |
24ad148a BH |
2878 | struct nfs4_statfs_res res = { |
2879 | .fsstat = fsstat, | |
2880 | }; | |
1da177e4 LT |
2881 | struct rpc_message msg = { |
2882 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
2883 | .rpc_argp = &args, | |
24ad148a | 2884 | .rpc_resp = &res, |
1da177e4 LT |
2885 | }; |
2886 | ||
0e574af1 | 2887 | nfs_fattr_init(fsstat->fattr); |
cccef3b9 | 2888 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2889 | } |
2890 | ||
2891 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
2892 | { | |
2893 | struct nfs4_exception exception = { }; | |
2894 | int err; | |
2895 | do { | |
2896 | err = nfs4_handle_exception(server, | |
2897 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
2898 | &exception); | |
2899 | } while (exception.retry); | |
2900 | return err; | |
2901 | } | |
2902 | ||
2903 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
2904 | struct nfs_fsinfo *fsinfo) | |
2905 | { | |
2906 | struct nfs4_fsinfo_arg args = { | |
2907 | .fh = fhandle, | |
2908 | .bitmask = server->attr_bitmask, | |
2909 | }; | |
3dda5e43 BH |
2910 | struct nfs4_fsinfo_res res = { |
2911 | .fsinfo = fsinfo, | |
2912 | }; | |
1da177e4 LT |
2913 | struct rpc_message msg = { |
2914 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
2915 | .rpc_argp = &args, | |
3dda5e43 | 2916 | .rpc_resp = &res, |
1da177e4 LT |
2917 | }; |
2918 | ||
cccef3b9 | 2919 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2920 | } |
2921 | ||
2922 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
2923 | { | |
2924 | struct nfs4_exception exception = { }; | |
2925 | int err; | |
2926 | ||
2927 | do { | |
2928 | err = nfs4_handle_exception(server, | |
2929 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
2930 | &exception); | |
2931 | } while (exception.retry); | |
2932 | return err; | |
2933 | } | |
2934 | ||
2935 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
2936 | { | |
0e574af1 | 2937 | nfs_fattr_init(fsinfo->fattr); |
1da177e4 LT |
2938 | return nfs4_do_fsinfo(server, fhandle, fsinfo); |
2939 | } | |
2940 | ||
2941 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
2942 | struct nfs_pathconf *pathconf) | |
2943 | { | |
2944 | struct nfs4_pathconf_arg args = { | |
2945 | .fh = fhandle, | |
2946 | .bitmask = server->attr_bitmask, | |
2947 | }; | |
d45b2989 BH |
2948 | struct nfs4_pathconf_res res = { |
2949 | .pathconf = pathconf, | |
2950 | }; | |
1da177e4 LT |
2951 | struct rpc_message msg = { |
2952 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
2953 | .rpc_argp = &args, | |
d45b2989 | 2954 | .rpc_resp = &res, |
1da177e4 LT |
2955 | }; |
2956 | ||
2957 | /* None of the pathconf attributes are mandatory to implement */ | |
2958 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
2959 | memset(pathconf, 0, sizeof(*pathconf)); | |
2960 | return 0; | |
2961 | } | |
2962 | ||
0e574af1 | 2963 | nfs_fattr_init(pathconf->fattr); |
cccef3b9 | 2964 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2965 | } |
2966 | ||
2967 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
2968 | struct nfs_pathconf *pathconf) | |
2969 | { | |
2970 | struct nfs4_exception exception = { }; | |
2971 | int err; | |
2972 | ||
2973 | do { | |
2974 | err = nfs4_handle_exception(server, | |
2975 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
2976 | &exception); | |
2977 | } while (exception.retry); | |
2978 | return err; | |
2979 | } | |
2980 | ||
ec06c096 | 2981 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 2982 | { |
ec06c096 | 2983 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 2984 | |
f11c88af AA |
2985 | dprintk("--> %s\n", __func__); |
2986 | ||
2987 | /* nfs4_sequence_free_slot called in the read rpc_call_done */ | |
2988 | nfs4_sequence_done(server, &data->res.seq_res, task->tk_status); | |
2989 | ||
9e33bed5 | 2990 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
eedc020e | 2991 | nfs4_restart_rpc(task, server->nfs_client); |
ec06c096 | 2992 | return -EAGAIN; |
1da177e4 | 2993 | } |
8850df99 TM |
2994 | |
2995 | nfs_invalidate_atime(data->inode); | |
1da177e4 | 2996 | if (task->tk_status > 0) |
ec06c096 TM |
2997 | renew_lease(server, data->timestamp); |
2998 | return 0; | |
1da177e4 LT |
2999 | } |
3000 | ||
bdc7f021 | 3001 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3002 | { |
1da177e4 | 3003 | data->timestamp = jiffies; |
bdc7f021 | 3004 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
1da177e4 LT |
3005 | } |
3006 | ||
788e7a89 | 3007 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3008 | { |
1da177e4 LT |
3009 | struct inode *inode = data->inode; |
3010 | ||
def6ed7e AA |
3011 | /* slot is freed in nfs_writeback_done */ |
3012 | nfs4_sequence_done(NFS_SERVER(inode), &data->res.seq_res, | |
3013 | task->tk_status); | |
3014 | ||
9e33bed5 | 3015 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
eedc020e | 3016 | nfs4_restart_rpc(task, NFS_SERVER(inode)->nfs_client); |
788e7a89 | 3017 | return -EAGAIN; |
1da177e4 | 3018 | } |
4f9838c7 | 3019 | if (task->tk_status >= 0) { |
1da177e4 | 3020 | renew_lease(NFS_SERVER(inode), data->timestamp); |
70ca8852 | 3021 | nfs_post_op_update_inode_force_wcc(inode, data->res.fattr); |
4f9838c7 | 3022 | } |
788e7a89 | 3023 | return 0; |
1da177e4 LT |
3024 | } |
3025 | ||
bdc7f021 | 3026 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3027 | { |
bdc7f021 TM |
3028 | struct nfs_server *server = NFS_SERVER(data->inode); |
3029 | ||
a65318bf | 3030 | data->args.bitmask = server->cache_consistency_bitmask; |
4f9838c7 | 3031 | data->res.server = server; |
1da177e4 LT |
3032 | data->timestamp = jiffies; |
3033 | ||
bdc7f021 | 3034 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
1da177e4 LT |
3035 | } |
3036 | ||
788e7a89 | 3037 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3038 | { |
1da177e4 LT |
3039 | struct inode *inode = data->inode; |
3040 | ||
21d9a851 AA |
3041 | nfs4_sequence_done(NFS_SERVER(inode), &data->res.seq_res, |
3042 | task->tk_status); | |
9e33bed5 | 3043 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
eedc020e | 3044 | nfs4_restart_rpc(task, NFS_SERVER(inode)->nfs_client); |
788e7a89 | 3045 | return -EAGAIN; |
1da177e4 | 3046 | } |
21d9a851 AA |
3047 | nfs4_sequence_free_slot(NFS_SERVER(inode)->nfs_client, |
3048 | &data->res.seq_res); | |
9e08a3c5 | 3049 | nfs_refresh_inode(inode, data->res.fattr); |
788e7a89 | 3050 | return 0; |
1da177e4 LT |
3051 | } |
3052 | ||
bdc7f021 | 3053 | static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3054 | { |
788e7a89 | 3055 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 3056 | |
a65318bf | 3057 | data->args.bitmask = server->cache_consistency_bitmask; |
4f9838c7 | 3058 | data->res.server = server; |
bdc7f021 | 3059 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
1da177e4 LT |
3060 | } |
3061 | ||
3062 | /* | |
3063 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3064 | * standalone procedure for queueing an asynchronous RENEW. | |
3065 | */ | |
963d8fe5 | 3066 | static void nfs4_renew_done(struct rpc_task *task, void *data) |
1da177e4 | 3067 | { |
adfa6f98 | 3068 | struct nfs_client *clp = (struct nfs_client *)task->tk_msg.rpc_argp; |
963d8fe5 | 3069 | unsigned long timestamp = (unsigned long)data; |
1da177e4 LT |
3070 | |
3071 | if (task->tk_status < 0) { | |
95baa25c TM |
3072 | /* Unless we're shutting down, schedule state recovery! */ |
3073 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) != 0) | |
3074 | nfs4_schedule_state_recovery(clp); | |
1da177e4 LT |
3075 | return; |
3076 | } | |
3077 | spin_lock(&clp->cl_lock); | |
3078 | if (time_before(clp->cl_last_renewal,timestamp)) | |
3079 | clp->cl_last_renewal = timestamp; | |
3080 | spin_unlock(&clp->cl_lock); | |
3081 | } | |
3082 | ||
963d8fe5 TM |
3083 | static const struct rpc_call_ops nfs4_renew_ops = { |
3084 | .rpc_call_done = nfs4_renew_done, | |
3085 | }; | |
3086 | ||
adfa6f98 | 3087 | int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3088 | { |
3089 | struct rpc_message msg = { | |
3090 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3091 | .rpc_argp = clp, | |
b4454fe1 | 3092 | .rpc_cred = cred, |
1da177e4 LT |
3093 | }; |
3094 | ||
3095 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, | |
963d8fe5 | 3096 | &nfs4_renew_ops, (void *)jiffies); |
1da177e4 LT |
3097 | } |
3098 | ||
adfa6f98 | 3099 | int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3100 | { |
3101 | struct rpc_message msg = { | |
3102 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3103 | .rpc_argp = clp, | |
b4454fe1 | 3104 | .rpc_cred = cred, |
1da177e4 LT |
3105 | }; |
3106 | unsigned long now = jiffies; | |
3107 | int status; | |
3108 | ||
3109 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3110 | if (status < 0) | |
3111 | return status; | |
3112 | spin_lock(&clp->cl_lock); | |
3113 | if (time_before(clp->cl_last_renewal,now)) | |
3114 | clp->cl_last_renewal = now; | |
3115 | spin_unlock(&clp->cl_lock); | |
3116 | return 0; | |
3117 | } | |
3118 | ||
aa1870af BF |
3119 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3120 | { | |
3121 | return (server->caps & NFS_CAP_ACLS) | |
3122 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3123 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3124 | } | |
3125 | ||
3126 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
3127 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
3128 | * the stack. | |
3129 | */ | |
3130 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
3131 | ||
3132 | static void buf_to_pages(const void *buf, size_t buflen, | |
3133 | struct page **pages, unsigned int *pgbase) | |
3134 | { | |
3135 | const void *p = buf; | |
3136 | ||
3137 | *pgbase = offset_in_page(buf); | |
3138 | p -= *pgbase; | |
3139 | while (p < buf + buflen) { | |
3140 | *(pages++) = virt_to_page(p); | |
3141 | p += PAGE_CACHE_SIZE; | |
3142 | } | |
3143 | } | |
3144 | ||
e50a1c2e BF |
3145 | struct nfs4_cached_acl { |
3146 | int cached; | |
3147 | size_t len; | |
3e9d4154 | 3148 | char data[0]; |
e50a1c2e BF |
3149 | }; |
3150 | ||
3151 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3152 | { | |
3153 | struct nfs_inode *nfsi = NFS_I(inode); | |
3154 | ||
3155 | spin_lock(&inode->i_lock); | |
3156 | kfree(nfsi->nfs4_acl); | |
3157 | nfsi->nfs4_acl = acl; | |
3158 | spin_unlock(&inode->i_lock); | |
3159 | } | |
3160 | ||
3161 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3162 | { | |
3163 | nfs4_set_cached_acl(inode, NULL); | |
3164 | } | |
3165 | ||
3166 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3167 | { | |
3168 | struct nfs_inode *nfsi = NFS_I(inode); | |
3169 | struct nfs4_cached_acl *acl; | |
3170 | int ret = -ENOENT; | |
3171 | ||
3172 | spin_lock(&inode->i_lock); | |
3173 | acl = nfsi->nfs4_acl; | |
3174 | if (acl == NULL) | |
3175 | goto out; | |
3176 | if (buf == NULL) /* user is just asking for length */ | |
3177 | goto out_len; | |
3178 | if (acl->cached == 0) | |
3179 | goto out; | |
3180 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3181 | if (acl->len > buflen) | |
3182 | goto out; | |
3183 | memcpy(buf, acl->data, acl->len); | |
3184 | out_len: | |
3185 | ret = acl->len; | |
3186 | out: | |
3187 | spin_unlock(&inode->i_lock); | |
3188 | return ret; | |
3189 | } | |
3190 | ||
3191 | static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len) | |
3192 | { | |
3193 | struct nfs4_cached_acl *acl; | |
3194 | ||
3195 | if (buf && acl_len <= PAGE_SIZE) { | |
3196 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); | |
3197 | if (acl == NULL) | |
3198 | goto out; | |
3199 | acl->cached = 1; | |
3200 | memcpy(acl->data, buf, acl_len); | |
3201 | } else { | |
3202 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3203 | if (acl == NULL) | |
3204 | goto out; | |
3205 | acl->cached = 0; | |
3206 | } | |
3207 | acl->len = acl_len; | |
3208 | out: | |
3209 | nfs4_set_cached_acl(inode, acl); | |
3210 | } | |
3211 | ||
16b4289c | 3212 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3213 | { |
aa1870af BF |
3214 | struct page *pages[NFS4ACL_MAXPAGES]; |
3215 | struct nfs_getaclargs args = { | |
3216 | .fh = NFS_FH(inode), | |
3217 | .acl_pages = pages, | |
3218 | .acl_len = buflen, | |
3219 | }; | |
663c79b3 BH |
3220 | struct nfs_getaclres res = { |
3221 | .acl_len = buflen, | |
3222 | }; | |
e50a1c2e | 3223 | void *resp_buf; |
aa1870af BF |
3224 | struct rpc_message msg = { |
3225 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3226 | .rpc_argp = &args, | |
663c79b3 | 3227 | .rpc_resp = &res, |
aa1870af | 3228 | }; |
e50a1c2e | 3229 | struct page *localpage = NULL; |
aa1870af BF |
3230 | int ret; |
3231 | ||
e50a1c2e BF |
3232 | if (buflen < PAGE_SIZE) { |
3233 | /* As long as we're doing a round trip to the server anyway, | |
3234 | * let's be prepared for a page of acl data. */ | |
3235 | localpage = alloc_page(GFP_KERNEL); | |
3236 | resp_buf = page_address(localpage); | |
3237 | if (localpage == NULL) | |
3238 | return -ENOMEM; | |
3239 | args.acl_pages[0] = localpage; | |
3240 | args.acl_pgbase = 0; | |
663c79b3 | 3241 | args.acl_len = PAGE_SIZE; |
e50a1c2e BF |
3242 | } else { |
3243 | resp_buf = buf; | |
3244 | buf_to_pages(buf, buflen, args.acl_pages, &args.acl_pgbase); | |
3245 | } | |
cccef3b9 | 3246 | ret = nfs4_call_sync(NFS_SERVER(inode), &msg, &args, &res, 0); |
e50a1c2e BF |
3247 | if (ret) |
3248 | goto out_free; | |
663c79b3 BH |
3249 | if (res.acl_len > args.acl_len) |
3250 | nfs4_write_cached_acl(inode, NULL, res.acl_len); | |
e50a1c2e | 3251 | else |
663c79b3 | 3252 | nfs4_write_cached_acl(inode, resp_buf, res.acl_len); |
e50a1c2e BF |
3253 | if (buf) { |
3254 | ret = -ERANGE; | |
663c79b3 | 3255 | if (res.acl_len > buflen) |
e50a1c2e BF |
3256 | goto out_free; |
3257 | if (localpage) | |
663c79b3 | 3258 | memcpy(buf, resp_buf, res.acl_len); |
e50a1c2e | 3259 | } |
663c79b3 | 3260 | ret = res.acl_len; |
e50a1c2e BF |
3261 | out_free: |
3262 | if (localpage) | |
3263 | __free_page(localpage); | |
aa1870af BF |
3264 | return ret; |
3265 | } | |
3266 | ||
16b4289c TM |
3267 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3268 | { | |
3269 | struct nfs4_exception exception = { }; | |
3270 | ssize_t ret; | |
3271 | do { | |
3272 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3273 | if (ret >= 0) | |
3274 | break; | |
3275 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3276 | } while (exception.retry); | |
3277 | return ret; | |
3278 | } | |
3279 | ||
e50a1c2e BF |
3280 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3281 | { | |
3282 | struct nfs_server *server = NFS_SERVER(inode); | |
3283 | int ret; | |
3284 | ||
3285 | if (!nfs4_server_supports_acls(server)) | |
3286 | return -EOPNOTSUPP; | |
3287 | ret = nfs_revalidate_inode(server, inode); | |
3288 | if (ret < 0) | |
3289 | return ret; | |
3290 | ret = nfs4_read_cached_acl(inode, buf, buflen); | |
3291 | if (ret != -ENOENT) | |
3292 | return ret; | |
3293 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3294 | } | |
3295 | ||
16b4289c | 3296 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3297 | { |
3298 | struct nfs_server *server = NFS_SERVER(inode); | |
3299 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3300 | struct nfs_setaclargs arg = { | |
3301 | .fh = NFS_FH(inode), | |
3302 | .acl_pages = pages, | |
3303 | .acl_len = buflen, | |
3304 | }; | |
73c403a9 | 3305 | struct nfs_setaclres res; |
4b580ee3 BF |
3306 | struct rpc_message msg = { |
3307 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3308 | .rpc_argp = &arg, | |
73c403a9 | 3309 | .rpc_resp = &res, |
4b580ee3 BF |
3310 | }; |
3311 | int ret; | |
3312 | ||
3313 | if (!nfs4_server_supports_acls(server)) | |
3314 | return -EOPNOTSUPP; | |
642ac549 | 3315 | nfs_inode_return_delegation(inode); |
4b580ee3 | 3316 | buf_to_pages(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
cccef3b9 | 3317 | ret = nfs4_call_sync(server, &msg, &arg, &res, 1); |
f41f7418 TM |
3318 | nfs_access_zap_cache(inode); |
3319 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3320 | return ret; |
3321 | } | |
3322 | ||
16b4289c TM |
3323 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3324 | { | |
3325 | struct nfs4_exception exception = { }; | |
3326 | int err; | |
3327 | do { | |
3328 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3329 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3330 | &exception); | |
3331 | } while (exception.retry); | |
3332 | return err; | |
3333 | } | |
3334 | ||
1da177e4 | 3335 | static int |
8328d59f | 3336 | _nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs_client *clp, struct nfs4_state *state) |
1da177e4 | 3337 | { |
1da177e4 LT |
3338 | if (!clp || task->tk_status >= 0) |
3339 | return 0; | |
3340 | switch(task->tk_status) { | |
9e33bed5 TM |
3341 | case -NFS4ERR_ADMIN_REVOKED: |
3342 | case -NFS4ERR_BAD_STATEID: | |
3343 | case -NFS4ERR_OPENMODE: | |
3344 | if (state == NULL) | |
3345 | break; | |
3346 | nfs4_state_mark_reclaim_nograce(clp, state); | |
1da177e4 LT |
3347 | case -NFS4ERR_STALE_CLIENTID: |
3348 | case -NFS4ERR_STALE_STATEID: | |
3349 | case -NFS4ERR_EXPIRED: | |
5d00837b | 3350 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
1da177e4 | 3351 | nfs4_schedule_state_recovery(clp); |
e005e804 | 3352 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
fda13939 | 3353 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); |
1da177e4 LT |
3354 | task->tk_status = 0; |
3355 | return -EAGAIN; | |
4745e315 AA |
3356 | #if defined(CONFIG_NFS_V4_1) |
3357 | case -NFS4ERR_BADSESSION: | |
3358 | case -NFS4ERR_BADSLOT: | |
3359 | case -NFS4ERR_BAD_HIGH_SLOT: | |
3360 | case -NFS4ERR_DEADSESSION: | |
3361 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
3362 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
3363 | case -NFS4ERR_SEQ_MISORDERED: | |
3364 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
3365 | task->tk_status); | |
3366 | set_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state); | |
3367 | task->tk_status = 0; | |
3368 | return -EAGAIN; | |
3369 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 3370 | case -NFS4ERR_DELAY: |
8328d59f AA |
3371 | if (server) |
3372 | nfs_inc_server_stats(server, NFSIOS_DELAY); | |
006ea73e | 3373 | case -NFS4ERR_GRACE: |
1da177e4 LT |
3374 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
3375 | task->tk_status = 0; | |
3376 | return -EAGAIN; | |
3377 | case -NFS4ERR_OLD_STATEID: | |
3378 | task->tk_status = 0; | |
3379 | return -EAGAIN; | |
3380 | } | |
3381 | task->tk_status = nfs4_map_errors(task->tk_status); | |
3382 | return 0; | |
3383 | } | |
3384 | ||
8328d59f AA |
3385 | static int |
3386 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) | |
3387 | { | |
3388 | return _nfs4_async_handle_error(task, server, server->nfs_client, state); | |
3389 | } | |
3390 | ||
adfa6f98 | 3391 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, unsigned short port, struct rpc_cred *cred) |
1da177e4 LT |
3392 | { |
3393 | nfs4_verifier sc_verifier; | |
3394 | struct nfs4_setclientid setclientid = { | |
3395 | .sc_verifier = &sc_verifier, | |
3396 | .sc_prog = program, | |
3397 | }; | |
3398 | struct rpc_message msg = { | |
3399 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
3400 | .rpc_argp = &setclientid, | |
3401 | .rpc_resp = clp, | |
286d7d6a | 3402 | .rpc_cred = cred, |
1da177e4 | 3403 | }; |
bc4785cd | 3404 | __be32 *p; |
1da177e4 LT |
3405 | int loop = 0; |
3406 | int status; | |
3407 | ||
bc4785cd | 3408 | p = (__be32*)sc_verifier.data; |
1da177e4 LT |
3409 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); |
3410 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
3411 | ||
3412 | for(;;) { | |
3413 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, | |
69dd716c | 3414 | sizeof(setclientid.sc_name), "%s/%s %s %s %u", |
d4d3c507 CL |
3415 | clp->cl_ipaddr, |
3416 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3417 | RPC_DISPLAY_ADDR), | |
69dd716c TM |
3418 | rpc_peeraddr2str(clp->cl_rpcclient, |
3419 | RPC_DISPLAY_PROTO), | |
78ea323b | 3420 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
1da177e4 LT |
3421 | clp->cl_id_uniquifier); |
3422 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
d4d3c507 CL |
3423 | sizeof(setclientid.sc_netid), |
3424 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3425 | RPC_DISPLAY_NETID)); | |
1da177e4 | 3426 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 3427 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
3428 | clp->cl_ipaddr, port >> 8, port & 255); |
3429 | ||
3430 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3431 | if (status != -NFS4ERR_CLID_INUSE) | |
3432 | break; | |
3433 | if (signalled()) | |
3434 | break; | |
3435 | if (loop++ & 1) | |
3436 | ssleep(clp->cl_lease_time + 1); | |
3437 | else | |
3438 | if (++clp->cl_id_uniquifier == 0) | |
3439 | break; | |
3440 | } | |
3441 | return status; | |
3442 | } | |
3443 | ||
adfa6f98 | 3444 | static int _nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3445 | { |
3446 | struct nfs_fsinfo fsinfo; | |
3447 | struct rpc_message msg = { | |
3448 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
3449 | .rpc_argp = clp, | |
3450 | .rpc_resp = &fsinfo, | |
286d7d6a | 3451 | .rpc_cred = cred, |
1da177e4 LT |
3452 | }; |
3453 | unsigned long now; | |
3454 | int status; | |
3455 | ||
3456 | now = jiffies; | |
3457 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3458 | if (status == 0) { | |
3459 | spin_lock(&clp->cl_lock); | |
3460 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
3461 | clp->cl_last_renewal = now; | |
3462 | spin_unlock(&clp->cl_lock); | |
3463 | } | |
3464 | return status; | |
3465 | } | |
3466 | ||
adfa6f98 | 3467 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct rpc_cred *cred) |
51581f3b | 3468 | { |
77e03677 | 3469 | long timeout = 0; |
51581f3b TM |
3470 | int err; |
3471 | do { | |
3472 | err = _nfs4_proc_setclientid_confirm(clp, cred); | |
3473 | switch (err) { | |
3474 | case 0: | |
3475 | return err; | |
3476 | case -NFS4ERR_RESOURCE: | |
3477 | /* The IBM lawyers misread another document! */ | |
3478 | case -NFS4ERR_DELAY: | |
3479 | err = nfs4_delay(clp->cl_rpcclient, &timeout); | |
3480 | } | |
3481 | } while (err == 0); | |
3482 | return err; | |
3483 | } | |
3484 | ||
fe650407 TM |
3485 | struct nfs4_delegreturndata { |
3486 | struct nfs4_delegreturnargs args; | |
fa178f29 | 3487 | struct nfs4_delegreturnres res; |
fe650407 TM |
3488 | struct nfs_fh fh; |
3489 | nfs4_stateid stateid; | |
26e976a8 | 3490 | unsigned long timestamp; |
fa178f29 | 3491 | struct nfs_fattr fattr; |
fe650407 TM |
3492 | int rpc_status; |
3493 | }; | |
3494 | ||
fe650407 TM |
3495 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
3496 | { | |
3497 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 AA |
3498 | |
3499 | nfs4_sequence_done_free_slot(data->res.server, &data->res.seq_res, | |
3500 | task->tk_status); | |
3501 | ||
fe650407 | 3502 | data->rpc_status = task->tk_status; |
26e976a8 | 3503 | if (data->rpc_status == 0) |
fa178f29 | 3504 | renew_lease(data->res.server, data->timestamp); |
fe650407 TM |
3505 | } |
3506 | ||
3507 | static void nfs4_delegreturn_release(void *calldata) | |
3508 | { | |
fe650407 TM |
3509 | kfree(calldata); |
3510 | } | |
3511 | ||
938e1010 AA |
3512 | #if defined(CONFIG_NFS_V4_1) |
3513 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
3514 | { | |
3515 | struct nfs4_delegreturndata *d_data; | |
3516 | ||
3517 | d_data = (struct nfs4_delegreturndata *)data; | |
3518 | ||
3519 | if (nfs4_setup_sequence(d_data->res.server->nfs_client, | |
3520 | &d_data->args.seq_args, | |
3521 | &d_data->res.seq_res, 1, task)) | |
3522 | return; | |
3523 | rpc_call_start(task); | |
3524 | } | |
3525 | #endif /* CONFIG_NFS_V4_1 */ | |
3526 | ||
c8d149f3 | 3527 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
3528 | #if defined(CONFIG_NFS_V4_1) |
3529 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
3530 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
3531 | .rpc_call_done = nfs4_delegreturn_done, |
3532 | .rpc_release = nfs4_delegreturn_release, | |
3533 | }; | |
3534 | ||
e6f81075 | 3535 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
3536 | { |
3537 | struct nfs4_delegreturndata *data; | |
fa178f29 | 3538 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 3539 | struct rpc_task *task; |
5138fde0 TM |
3540 | struct rpc_message msg = { |
3541 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
3542 | .rpc_cred = cred, | |
3543 | }; | |
c970aa85 TM |
3544 | struct rpc_task_setup task_setup_data = { |
3545 | .rpc_client = server->client, | |
5138fde0 | 3546 | .rpc_message = &msg, |
c970aa85 TM |
3547 | .callback_ops = &nfs4_delegreturn_ops, |
3548 | .flags = RPC_TASK_ASYNC, | |
3549 | }; | |
e6f81075 | 3550 | int status = 0; |
fe650407 | 3551 | |
938e1010 | 3552 | data = kzalloc(sizeof(*data), GFP_KERNEL); |
fe650407 TM |
3553 | if (data == NULL) |
3554 | return -ENOMEM; | |
3555 | data->args.fhandle = &data->fh; | |
3556 | data->args.stateid = &data->stateid; | |
fa178f29 | 3557 | data->args.bitmask = server->attr_bitmask; |
fe650407 TM |
3558 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
3559 | memcpy(&data->stateid, stateid, sizeof(data->stateid)); | |
fa178f29 TM |
3560 | data->res.fattr = &data->fattr; |
3561 | data->res.server = server; | |
5f7dbd5c | 3562 | data->res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE; |
5138fde0 | 3563 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 3564 | data->timestamp = jiffies; |
fe650407 TM |
3565 | data->rpc_status = 0; |
3566 | ||
c970aa85 | 3567 | task_setup_data.callback_data = data; |
5138fde0 TM |
3568 | msg.rpc_argp = &data->args, |
3569 | msg.rpc_resp = &data->res, | |
c970aa85 | 3570 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 3571 | if (IS_ERR(task)) |
fe650407 | 3572 | return PTR_ERR(task); |
e6f81075 TM |
3573 | if (!issync) |
3574 | goto out; | |
fe650407 | 3575 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
3576 | if (status != 0) |
3577 | goto out; | |
3578 | status = data->rpc_status; | |
3579 | if (status != 0) | |
3580 | goto out; | |
3581 | nfs_refresh_inode(inode, &data->fattr); | |
3582 | out: | |
e6b3c4db | 3583 | rpc_put_task(task); |
fe650407 | 3584 | return status; |
1da177e4 LT |
3585 | } |
3586 | ||
e6f81075 | 3587 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
3588 | { |
3589 | struct nfs_server *server = NFS_SERVER(inode); | |
3590 | struct nfs4_exception exception = { }; | |
3591 | int err; | |
3592 | do { | |
e6f81075 | 3593 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
3594 | switch (err) { |
3595 | case -NFS4ERR_STALE_STATEID: | |
3596 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
3597 | case 0: |
3598 | return 0; | |
3599 | } | |
3600 | err = nfs4_handle_exception(server, err, &exception); | |
3601 | } while (exception.retry); | |
3602 | return err; | |
3603 | } | |
3604 | ||
3605 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
3606 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
3607 | ||
3608 | /* | |
3609 | * sleep, with exponential backoff, and retry the LOCK operation. | |
3610 | */ | |
3611 | static unsigned long | |
3612 | nfs4_set_lock_task_retry(unsigned long timeout) | |
3613 | { | |
150030b7 | 3614 | schedule_timeout_killable(timeout); |
1da177e4 LT |
3615 | timeout <<= 1; |
3616 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
3617 | return NFS4_LOCK_MAXTIMEOUT; | |
3618 | return timeout; | |
3619 | } | |
3620 | ||
1da177e4 LT |
3621 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
3622 | { | |
3623 | struct inode *inode = state->inode; | |
3624 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 3625 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 3626 | struct nfs_lockt_args arg = { |
1da177e4 | 3627 | .fh = NFS_FH(inode), |
911d1aaf | 3628 | .fl = request, |
1da177e4 | 3629 | }; |
911d1aaf TM |
3630 | struct nfs_lockt_res res = { |
3631 | .denied = request, | |
1da177e4 LT |
3632 | }; |
3633 | struct rpc_message msg = { | |
3634 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
3635 | .rpc_argp = &arg, | |
3636 | .rpc_resp = &res, | |
3637 | .rpc_cred = state->owner->so_cred, | |
3638 | }; | |
1da177e4 LT |
3639 | struct nfs4_lock_state *lsp; |
3640 | int status; | |
3641 | ||
911d1aaf | 3642 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
3643 | status = nfs4_set_lock_state(state, request); |
3644 | if (status != 0) | |
3645 | goto out; | |
3646 | lsp = request->fl_u.nfs4_fl.owner; | |
9f958ab8 | 3647 | arg.lock_owner.id = lsp->ls_id.id; |
cccef3b9 | 3648 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
911d1aaf TM |
3649 | switch (status) { |
3650 | case 0: | |
3651 | request->fl_type = F_UNLCK; | |
3652 | break; | |
3653 | case -NFS4ERR_DENIED: | |
3654 | status = 0; | |
1da177e4 | 3655 | } |
70cc6487 | 3656 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 3657 | out: |
1da177e4 LT |
3658 | return status; |
3659 | } | |
3660 | ||
3661 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3662 | { | |
3663 | struct nfs4_exception exception = { }; | |
3664 | int err; | |
3665 | ||
3666 | do { | |
3667 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
3668 | _nfs4_proc_getlk(state, cmd, request), | |
3669 | &exception); | |
3670 | } while (exception.retry); | |
3671 | return err; | |
3672 | } | |
3673 | ||
3674 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
3675 | { | |
3676 | int res = 0; | |
3677 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
3678 | case FL_POSIX: | |
3679 | res = posix_lock_file_wait(file, fl); | |
3680 | break; | |
3681 | case FL_FLOCK: | |
3682 | res = flock_lock_file_wait(file, fl); | |
3683 | break; | |
3684 | default: | |
3685 | BUG(); | |
3686 | } | |
1da177e4 LT |
3687 | return res; |
3688 | } | |
3689 | ||
faf5f49c | 3690 | struct nfs4_unlockdata { |
911d1aaf TM |
3691 | struct nfs_locku_args arg; |
3692 | struct nfs_locku_res res; | |
faf5f49c TM |
3693 | struct nfs4_lock_state *lsp; |
3694 | struct nfs_open_context *ctx; | |
911d1aaf TM |
3695 | struct file_lock fl; |
3696 | const struct nfs_server *server; | |
26e976a8 | 3697 | unsigned long timestamp; |
faf5f49c TM |
3698 | }; |
3699 | ||
911d1aaf TM |
3700 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
3701 | struct nfs_open_context *ctx, | |
3702 | struct nfs4_lock_state *lsp, | |
3703 | struct nfs_seqid *seqid) | |
3704 | { | |
3705 | struct nfs4_unlockdata *p; | |
3706 | struct inode *inode = lsp->ls_state->inode; | |
3707 | ||
a893693c | 3708 | p = kzalloc(sizeof(*p), GFP_KERNEL); |
911d1aaf TM |
3709 | if (p == NULL) |
3710 | return NULL; | |
3711 | p->arg.fh = NFS_FH(inode); | |
3712 | p->arg.fl = &p->fl; | |
3713 | p->arg.seqid = seqid; | |
c1d51931 | 3714 | p->res.seqid = seqid; |
5f7dbd5c | 3715 | p->res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE; |
911d1aaf TM |
3716 | p->arg.stateid = &lsp->ls_stateid; |
3717 | p->lsp = lsp; | |
3718 | atomic_inc(&lsp->ls_count); | |
3719 | /* Ensure we don't close file until we're done freeing locks! */ | |
3720 | p->ctx = get_nfs_open_context(ctx); | |
3721 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
3722 | p->server = NFS_SERVER(inode); | |
3723 | return p; | |
3724 | } | |
3725 | ||
06f814a3 | 3726 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 3727 | { |
963d8fe5 | 3728 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 3729 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
3730 | nfs4_put_lock_state(calldata->lsp); |
3731 | put_nfs_open_context(calldata->ctx); | |
3732 | kfree(calldata); | |
faf5f49c TM |
3733 | } |
3734 | ||
963d8fe5 | 3735 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 3736 | { |
963d8fe5 | 3737 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 3738 | |
a893693c AA |
3739 | nfs4_sequence_done(calldata->server, &calldata->res.seq_res, |
3740 | task->tk_status); | |
06f814a3 TM |
3741 | if (RPC_ASSASSINATED(task)) |
3742 | return; | |
faf5f49c TM |
3743 | switch (task->tk_status) { |
3744 | case 0: | |
3745 | memcpy(calldata->lsp->ls_stateid.data, | |
911d1aaf | 3746 | calldata->res.stateid.data, |
faf5f49c | 3747 | sizeof(calldata->lsp->ls_stateid.data)); |
26e976a8 | 3748 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 3749 | break; |
9e33bed5 TM |
3750 | case -NFS4ERR_BAD_STATEID: |
3751 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
3752 | case -NFS4ERR_STALE_STATEID: |
3753 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
3754 | break; |
3755 | default: | |
9e33bed5 | 3756 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
eedc020e AA |
3757 | nfs4_restart_rpc(task, |
3758 | calldata->server->nfs_client); | |
faf5f49c | 3759 | } |
a893693c AA |
3760 | nfs4_sequence_free_slot(calldata->server->nfs_client, |
3761 | &calldata->res.seq_res); | |
faf5f49c TM |
3762 | } |
3763 | ||
4ce70ada | 3764 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 3765 | { |
4ce70ada | 3766 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 3767 | |
911d1aaf | 3768 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
3769 | return; |
3770 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
3771 | /* Note: exit _without_ running nfs4_locku_done */ |
3772 | task->tk_action = NULL; | |
faf5f49c TM |
3773 | return; |
3774 | } | |
26e976a8 | 3775 | calldata->timestamp = jiffies; |
a893693c AA |
3776 | if (nfs4_setup_sequence(calldata->server->nfs_client, |
3777 | &calldata->arg.seq_args, | |
3778 | &calldata->res.seq_res, 1, task)) | |
3779 | return; | |
5138fde0 | 3780 | rpc_call_start(task); |
faf5f49c TM |
3781 | } |
3782 | ||
963d8fe5 | 3783 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 3784 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 3785 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 3786 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
3787 | }; |
3788 | ||
a5d16a4d TM |
3789 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
3790 | struct nfs_open_context *ctx, | |
3791 | struct nfs4_lock_state *lsp, | |
3792 | struct nfs_seqid *seqid) | |
3793 | { | |
3794 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
3795 | struct rpc_message msg = { |
3796 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
3797 | .rpc_cred = ctx->cred, | |
3798 | }; | |
c970aa85 TM |
3799 | struct rpc_task_setup task_setup_data = { |
3800 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 3801 | .rpc_message = &msg, |
c970aa85 | 3802 | .callback_ops = &nfs4_locku_ops, |
101070ca | 3803 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
3804 | .flags = RPC_TASK_ASYNC, |
3805 | }; | |
a5d16a4d | 3806 | |
137d6aca FF |
3807 | /* Ensure this is an unlock - when canceling a lock, the |
3808 | * canceled lock is passed in, and it won't be an unlock. | |
3809 | */ | |
3810 | fl->fl_type = F_UNLCK; | |
3811 | ||
a5d16a4d TM |
3812 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
3813 | if (data == NULL) { | |
3814 | nfs_free_seqid(seqid); | |
3815 | return ERR_PTR(-ENOMEM); | |
3816 | } | |
3817 | ||
5138fde0 TM |
3818 | msg.rpc_argp = &data->arg, |
3819 | msg.rpc_resp = &data->res, | |
c970aa85 TM |
3820 | task_setup_data.callback_data = data; |
3821 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
3822 | } |
3823 | ||
faf5f49c TM |
3824 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
3825 | { | |
19e03c57 | 3826 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 3827 | struct nfs_seqid *seqid; |
1da177e4 | 3828 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
3829 | struct rpc_task *task; |
3830 | int status = 0; | |
536ff0f8 | 3831 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 3832 | |
8d0a8a9d | 3833 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
3834 | /* Unlock _before_ we do the RPC call */ |
3835 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
3836 | down_read(&nfsi->rwsem); |
3837 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
3838 | up_read(&nfsi->rwsem); | |
9b073574 | 3839 | goto out; |
19e03c57 TM |
3840 | } |
3841 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 3842 | if (status != 0) |
9b073574 TM |
3843 | goto out; |
3844 | /* Is this a delegated lock? */ | |
3845 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
3846 | goto out; | |
8d0a8a9d | 3847 | lsp = request->fl_u.nfs4_fl.owner; |
911d1aaf | 3848 | seqid = nfs_alloc_seqid(&lsp->ls_seqid); |
9b073574 | 3849 | status = -ENOMEM; |
911d1aaf | 3850 | if (seqid == NULL) |
9b073574 | 3851 | goto out; |
cd3758e3 | 3852 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
3853 | status = PTR_ERR(task); |
3854 | if (IS_ERR(task)) | |
9b073574 | 3855 | goto out; |
a5d16a4d | 3856 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 3857 | rpc_put_task(task); |
9b073574 | 3858 | out: |
536ff0f8 | 3859 | request->fl_flags = fl_flags; |
1da177e4 LT |
3860 | return status; |
3861 | } | |
3862 | ||
a5d16a4d TM |
3863 | struct nfs4_lockdata { |
3864 | struct nfs_lock_args arg; | |
3865 | struct nfs_lock_res res; | |
3866 | struct nfs4_lock_state *lsp; | |
3867 | struct nfs_open_context *ctx; | |
3868 | struct file_lock fl; | |
26e976a8 | 3869 | unsigned long timestamp; |
a5d16a4d TM |
3870 | int rpc_status; |
3871 | int cancelled; | |
66179efe | 3872 | struct nfs_server *server; |
a5d16a4d TM |
3873 | }; |
3874 | ||
3875 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
3876 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp) | |
1da177e4 | 3877 | { |
a5d16a4d TM |
3878 | struct nfs4_lockdata *p; |
3879 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 3880 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d TM |
3881 | |
3882 | p = kzalloc(sizeof(*p), GFP_KERNEL); | |
3883 | if (p == NULL) | |
3884 | return NULL; | |
3885 | ||
3886 | p->arg.fh = NFS_FH(inode); | |
3887 | p->arg.fl = &p->fl; | |
2f74c0a0 TM |
3888 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid); |
3889 | if (p->arg.open_seqid == NULL) | |
3890 | goto out_free; | |
a5d16a4d TM |
3891 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid); |
3892 | if (p->arg.lock_seqid == NULL) | |
2f74c0a0 | 3893 | goto out_free_seqid; |
a5d16a4d | 3894 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 3895 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 3896 | p->arg.lock_owner.id = lsp->ls_id.id; |
c1d51931 | 3897 | p->res.lock_seqid = p->arg.lock_seqid; |
5f7dbd5c | 3898 | p->res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE; |
a5d16a4d | 3899 | p->lsp = lsp; |
66179efe | 3900 | p->server = server; |
a5d16a4d TM |
3901 | atomic_inc(&lsp->ls_count); |
3902 | p->ctx = get_nfs_open_context(ctx); | |
3903 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
3904 | return p; | |
2f74c0a0 TM |
3905 | out_free_seqid: |
3906 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
3907 | out_free: |
3908 | kfree(p); | |
3909 | return NULL; | |
3910 | } | |
3911 | ||
3912 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
3913 | { | |
3914 | struct nfs4_lockdata *data = calldata; | |
3915 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 3916 | |
3110ff80 | 3917 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
3918 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
3919 | return; | |
a5d16a4d TM |
3920 | /* Do we need to do an open_to_lock_owner? */ |
3921 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
3922 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
3923 | return; | |
a5d16a4d TM |
3924 | data->arg.open_stateid = &state->stateid; |
3925 | data->arg.new_lock_owner = 1; | |
c1d51931 | 3926 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
3927 | } else |
3928 | data->arg.new_lock_owner = 0; | |
26e976a8 | 3929 | data->timestamp = jiffies; |
66179efe AA |
3930 | if (nfs4_setup_sequence(data->server->nfs_client, &data->arg.seq_args, |
3931 | &data->res.seq_res, 1, task)) | |
3932 | return; | |
5138fde0 | 3933 | rpc_call_start(task); |
3110ff80 | 3934 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
a5d16a4d TM |
3935 | } |
3936 | ||
3937 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) | |
3938 | { | |
3939 | struct nfs4_lockdata *data = calldata; | |
3940 | ||
3110ff80 | 3941 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 3942 | |
66179efe AA |
3943 | nfs4_sequence_done_free_slot(data->server, &data->res.seq_res, |
3944 | task->tk_status); | |
3945 | ||
a5d16a4d TM |
3946 | data->rpc_status = task->tk_status; |
3947 | if (RPC_ASSASSINATED(task)) | |
3948 | goto out; | |
3949 | if (data->arg.new_lock_owner != 0) { | |
a5d16a4d TM |
3950 | if (data->rpc_status == 0) |
3951 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
3952 | else | |
3953 | goto out; | |
3954 | } | |
3955 | if (data->rpc_status == 0) { | |
3956 | memcpy(data->lsp->ls_stateid.data, data->res.stateid.data, | |
3957 | sizeof(data->lsp->ls_stateid.data)); | |
3958 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; | |
88be9f99 | 3959 | renew_lease(NFS_SERVER(data->ctx->path.dentry->d_inode), data->timestamp); |
a5d16a4d | 3960 | } |
a5d16a4d | 3961 | out: |
3110ff80 | 3962 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
3963 | } |
3964 | ||
3965 | static void nfs4_lock_release(void *calldata) | |
3966 | { | |
3967 | struct nfs4_lockdata *data = calldata; | |
3968 | ||
3110ff80 | 3969 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 3970 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
3971 | if (data->cancelled != 0) { |
3972 | struct rpc_task *task; | |
3973 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
3974 | data->arg.lock_seqid); | |
3975 | if (!IS_ERR(task)) | |
e6b3c4db | 3976 | rpc_put_task(task); |
3110ff80 | 3977 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
3978 | } else |
3979 | nfs_free_seqid(data->arg.lock_seqid); | |
3980 | nfs4_put_lock_state(data->lsp); | |
3981 | put_nfs_open_context(data->ctx); | |
3982 | kfree(data); | |
3110ff80 | 3983 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
3984 | } |
3985 | ||
3986 | static const struct rpc_call_ops nfs4_lock_ops = { | |
3987 | .rpc_call_prepare = nfs4_lock_prepare, | |
3988 | .rpc_call_done = nfs4_lock_done, | |
3989 | .rpc_release = nfs4_lock_release, | |
3990 | }; | |
3991 | ||
3992 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int reclaim) | |
3993 | { | |
3994 | struct nfs4_lockdata *data; | |
3995 | struct rpc_task *task; | |
5138fde0 TM |
3996 | struct rpc_message msg = { |
3997 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
3998 | .rpc_cred = state->owner->so_cred, | |
3999 | }; | |
c970aa85 TM |
4000 | struct rpc_task_setup task_setup_data = { |
4001 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4002 | .rpc_message = &msg, |
c970aa85 | 4003 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4004 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4005 | .flags = RPC_TASK_ASYNC, |
4006 | }; | |
a5d16a4d TM |
4007 | int ret; |
4008 | ||
3110ff80 | 4009 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4010 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
a5d16a4d TM |
4011 | fl->fl_u.nfs4_fl.owner); |
4012 | if (data == NULL) | |
4013 | return -ENOMEM; | |
4014 | if (IS_SETLKW(cmd)) | |
4015 | data->arg.block = 1; | |
4016 | if (reclaim != 0) | |
4017 | data->arg.reclaim = 1; | |
5138fde0 TM |
4018 | msg.rpc_argp = &data->arg, |
4019 | msg.rpc_resp = &data->res, | |
c970aa85 TM |
4020 | task_setup_data.callback_data = data; |
4021 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 4022 | if (IS_ERR(task)) |
a5d16a4d | 4023 | return PTR_ERR(task); |
a5d16a4d TM |
4024 | ret = nfs4_wait_for_completion_rpc_task(task); |
4025 | if (ret == 0) { | |
4026 | ret = data->rpc_status; | |
a5d16a4d TM |
4027 | } else |
4028 | data->cancelled = 1; | |
e6b3c4db | 4029 | rpc_put_task(task); |
3110ff80 | 4030 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4031 | return ret; |
1da177e4 LT |
4032 | } |
4033 | ||
4034 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4035 | { | |
202b50dc TM |
4036 | struct nfs_server *server = NFS_SERVER(state->inode); |
4037 | struct nfs4_exception exception = { }; | |
4038 | int err; | |
4039 | ||
4040 | do { | |
42a2d13e TM |
4041 | /* Cache the lock if possible... */ |
4042 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4043 | return 0; | |
202b50dc TM |
4044 | err = _nfs4_do_setlk(state, F_SETLK, request, 1); |
4045 | if (err != -NFS4ERR_DELAY) | |
4046 | break; | |
4047 | nfs4_handle_exception(server, err, &exception); | |
4048 | } while (exception.retry); | |
4049 | return err; | |
1da177e4 LT |
4050 | } |
4051 | ||
4052 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4053 | { | |
202b50dc TM |
4054 | struct nfs_server *server = NFS_SERVER(state->inode); |
4055 | struct nfs4_exception exception = { }; | |
4056 | int err; | |
4057 | ||
6bfc93ef TM |
4058 | err = nfs4_set_lock_state(state, request); |
4059 | if (err != 0) | |
4060 | return err; | |
202b50dc | 4061 | do { |
42a2d13e TM |
4062 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4063 | return 0; | |
202b50dc | 4064 | err = _nfs4_do_setlk(state, F_SETLK, request, 0); |
a9ed2e25 TM |
4065 | switch (err) { |
4066 | default: | |
4067 | goto out; | |
4068 | case -NFS4ERR_GRACE: | |
4069 | case -NFS4ERR_DELAY: | |
4070 | nfs4_handle_exception(server, err, &exception); | |
4071 | err = 0; | |
4072 | } | |
202b50dc | 4073 | } while (exception.retry); |
a9ed2e25 | 4074 | out: |
202b50dc | 4075 | return err; |
1da177e4 LT |
4076 | } |
4077 | ||
4078 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4079 | { | |
19e03c57 | 4080 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4081 | unsigned char fl_flags = request->fl_flags; |
1da177e4 LT |
4082 | int status; |
4083 | ||
6bfc93ef | 4084 | /* Is this a delegated open? */ |
6bfc93ef TM |
4085 | status = nfs4_set_lock_state(state, request); |
4086 | if (status != 0) | |
4087 | goto out; | |
01c3b861 TM |
4088 | request->fl_flags |= FL_ACCESS; |
4089 | status = do_vfs_lock(request->fl_file, request); | |
4090 | if (status < 0) | |
4091 | goto out; | |
19e03c57 | 4092 | down_read(&nfsi->rwsem); |
01c3b861 | 4093 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4094 | /* Yes: cache locks! */ |
01c3b861 | 4095 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4096 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4097 | status = do_vfs_lock(request->fl_file, request); | |
4098 | goto out_unlock; | |
01c3b861 | 4099 | } |
6bfc93ef TM |
4100 | status = _nfs4_do_setlk(state, cmd, request, 0); |
4101 | if (status != 0) | |
01c3b861 | 4102 | goto out_unlock; |
6bfc93ef | 4103 | /* Note: we always want to sleep here! */ |
01c3b861 | 4104 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4105 | if (do_vfs_lock(request->fl_file, request) < 0) |
3110ff80 | 4106 | printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __func__); |
01c3b861 | 4107 | out_unlock: |
19e03c57 | 4108 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4109 | out: |
4110 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4111 | return status; |
4112 | } | |
4113 | ||
4114 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4115 | { | |
4116 | struct nfs4_exception exception = { }; | |
4117 | int err; | |
4118 | ||
4119 | do { | |
965b5d67 TM |
4120 | err = _nfs4_proc_setlk(state, cmd, request); |
4121 | if (err == -NFS4ERR_DENIED) | |
4122 | err = -EAGAIN; | |
1da177e4 | 4123 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4124 | err, &exception); |
1da177e4 LT |
4125 | } while (exception.retry); |
4126 | return err; | |
4127 | } | |
4128 | ||
4129 | static int | |
4130 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
4131 | { | |
4132 | struct nfs_open_context *ctx; | |
4133 | struct nfs4_state *state; | |
4134 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
4135 | int status; | |
4136 | ||
4137 | /* verify open state */ | |
cd3758e3 | 4138 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
4139 | state = ctx->state; |
4140 | ||
4141 | if (request->fl_start < 0 || request->fl_end < 0) | |
4142 | return -EINVAL; | |
4143 | ||
d953126a TM |
4144 | if (IS_GETLK(cmd)) { |
4145 | if (state != NULL) | |
4146 | return nfs4_proc_getlk(state, F_GETLK, request); | |
4147 | return 0; | |
4148 | } | |
1da177e4 LT |
4149 | |
4150 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
4151 | return -EINVAL; | |
4152 | ||
d953126a TM |
4153 | if (request->fl_type == F_UNLCK) { |
4154 | if (state != NULL) | |
4155 | return nfs4_proc_unlck(state, cmd, request); | |
4156 | return 0; | |
4157 | } | |
1da177e4 | 4158 | |
d953126a TM |
4159 | if (state == NULL) |
4160 | return -ENOLCK; | |
1da177e4 LT |
4161 | do { |
4162 | status = nfs4_proc_setlk(state, cmd, request); | |
4163 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
4164 | break; | |
4165 | timeout = nfs4_set_lock_task_retry(timeout); | |
4166 | status = -ERESTARTSYS; | |
4167 | if (signalled()) | |
4168 | break; | |
4169 | } while(status < 0); | |
1da177e4 LT |
4170 | return status; |
4171 | } | |
4172 | ||
888e694c TM |
4173 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
4174 | { | |
4175 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4176 | struct nfs4_exception exception = { }; | |
4177 | int err; | |
4178 | ||
4179 | err = nfs4_set_lock_state(state, fl); | |
4180 | if (err != 0) | |
4181 | goto out; | |
4182 | do { | |
4183 | err = _nfs4_do_setlk(state, F_SETLK, fl, 0); | |
d5122201 TM |
4184 | switch (err) { |
4185 | default: | |
4186 | printk(KERN_ERR "%s: unhandled error %d.\n", | |
4187 | __func__, err); | |
4188 | case 0: | |
965b5d67 | 4189 | case -ESTALE: |
d5122201 TM |
4190 | goto out; |
4191 | case -NFS4ERR_EXPIRED: | |
4192 | case -NFS4ERR_STALE_CLIENTID: | |
965b5d67 | 4193 | case -NFS4ERR_STALE_STATEID: |
d5122201 TM |
4194 | nfs4_schedule_state_recovery(server->nfs_client); |
4195 | goto out; | |
965b5d67 TM |
4196 | case -ERESTARTSYS: |
4197 | /* | |
4198 | * The show must go on: exit, but mark the | |
4199 | * stateid as needing recovery. | |
4200 | */ | |
4201 | case -NFS4ERR_ADMIN_REVOKED: | |
4202 | case -NFS4ERR_BAD_STATEID: | |
4203 | case -NFS4ERR_OPENMODE: | |
4204 | nfs4_state_mark_reclaim_nograce(server->nfs_client, state); | |
4205 | err = 0; | |
4206 | goto out; | |
4207 | case -ENOMEM: | |
4208 | case -NFS4ERR_DENIED: | |
4209 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
4210 | err = 0; | |
4211 | goto out; | |
d5122201 TM |
4212 | case -NFS4ERR_DELAY: |
4213 | break; | |
4214 | } | |
888e694c TM |
4215 | err = nfs4_handle_exception(server, err, &exception); |
4216 | } while (exception.retry); | |
4217 | out: | |
4218 | return err; | |
4219 | } | |
6b3b5496 | 4220 | |
aa1870af BF |
4221 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
4222 | ||
6b3b5496 BF |
4223 | int nfs4_setxattr(struct dentry *dentry, const char *key, const void *buf, |
4224 | size_t buflen, int flags) | |
4225 | { | |
4b580ee3 BF |
4226 | struct inode *inode = dentry->d_inode; |
4227 | ||
4228 | if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0) | |
4229 | return -EOPNOTSUPP; | |
4230 | ||
4b580ee3 | 4231 | return nfs4_proc_set_acl(inode, buf, buflen); |
6b3b5496 BF |
4232 | } |
4233 | ||
4234 | /* The getxattr man page suggests returning -ENODATA for unknown attributes, | |
4235 | * and that's what we'll do for e.g. user attributes that haven't been set. | |
4236 | * But we'll follow ext2/ext3's lead by returning -EOPNOTSUPP for unsupported | |
4237 | * attributes in kernel-managed attribute namespaces. */ | |
4238 | ssize_t nfs4_getxattr(struct dentry *dentry, const char *key, void *buf, | |
4239 | size_t buflen) | |
4240 | { | |
aa1870af BF |
4241 | struct inode *inode = dentry->d_inode; |
4242 | ||
4243 | if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0) | |
4244 | return -EOPNOTSUPP; | |
4245 | ||
4246 | return nfs4_proc_get_acl(inode, buf, buflen); | |
6b3b5496 BF |
4247 | } |
4248 | ||
4249 | ssize_t nfs4_listxattr(struct dentry *dentry, char *buf, size_t buflen) | |
4250 | { | |
aa1870af | 4251 | size_t len = strlen(XATTR_NAME_NFSV4_ACL) + 1; |
6b3b5496 | 4252 | |
096455a2 BF |
4253 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
4254 | return 0; | |
6b3b5496 BF |
4255 | if (buf && buflen < len) |
4256 | return -ERANGE; | |
4257 | if (buf) | |
aa1870af BF |
4258 | memcpy(buf, XATTR_NAME_NFSV4_ACL, len); |
4259 | return len; | |
6b3b5496 BF |
4260 | } |
4261 | ||
69aaaae1 TM |
4262 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
4263 | { | |
4264 | if (!((fattr->valid & NFS_ATTR_FATTR_FILEID) && | |
4265 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
4266 | (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL))) | |
4267 | return; | |
4268 | ||
4269 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
4270 | NFS_ATTR_FATTR_NLINK; | |
4271 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; | |
4272 | fattr->nlink = 2; | |
4273 | } | |
4274 | ||
56659e99 | 4275 | int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, |
7aaa0b3b | 4276 | struct nfs4_fs_locations *fs_locations, struct page *page) |
683b57b4 TM |
4277 | { |
4278 | struct nfs_server *server = NFS_SERVER(dir); | |
4279 | u32 bitmask[2] = { | |
361e624f MN |
4280 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
4281 | [1] = FATTR4_WORD1_MOUNTED_ON_FILEID, | |
683b57b4 TM |
4282 | }; |
4283 | struct nfs4_fs_locations_arg args = { | |
4284 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 4285 | .name = name, |
683b57b4 TM |
4286 | .page = page, |
4287 | .bitmask = bitmask, | |
4288 | }; | |
22958463 BH |
4289 | struct nfs4_fs_locations_res res = { |
4290 | .fs_locations = fs_locations, | |
4291 | }; | |
683b57b4 TM |
4292 | struct rpc_message msg = { |
4293 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
4294 | .rpc_argp = &args, | |
22958463 | 4295 | .rpc_resp = &res, |
683b57b4 TM |
4296 | }; |
4297 | int status; | |
4298 | ||
3110ff80 | 4299 | dprintk("%s: start\n", __func__); |
c228fd3a | 4300 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 4301 | fs_locations->server = server; |
830b8e33 | 4302 | fs_locations->nlocations = 0; |
cccef3b9 | 4303 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
69aaaae1 | 4304 | nfs_fixup_referral_attributes(&fs_locations->fattr); |
3110ff80 | 4305 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
4306 | return status; |
4307 | } | |
4308 | ||
557134a3 | 4309 | #ifdef CONFIG_NFS_V4_1 |
99fe60d0 BH |
4310 | /* |
4311 | * nfs4_proc_exchange_id() | |
4312 | * | |
4313 | * Since the clientid has expired, all compounds using sessions | |
4314 | * associated with the stale clientid will be returning | |
4315 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
4316 | * be in some phase of session reset. | |
4317 | */ | |
4318 | static int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) | |
4319 | { | |
4320 | nfs4_verifier verifier; | |
4321 | struct nfs41_exchange_id_args args = { | |
4322 | .client = clp, | |
4323 | .flags = clp->cl_exchange_flags, | |
4324 | }; | |
4325 | struct nfs41_exchange_id_res res = { | |
4326 | .client = clp, | |
4327 | }; | |
4328 | int status; | |
4329 | struct rpc_message msg = { | |
4330 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
4331 | .rpc_argp = &args, | |
4332 | .rpc_resp = &res, | |
4333 | .rpc_cred = cred, | |
4334 | }; | |
4335 | __be32 *p; | |
4336 | ||
4337 | dprintk("--> %s\n", __func__); | |
4338 | BUG_ON(clp == NULL); | |
a7b72103 | 4339 | |
99fe60d0 BH |
4340 | p = (u32 *)verifier.data; |
4341 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); | |
4342 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
4343 | args.verifier = &verifier; | |
4344 | ||
4345 | while (1) { | |
4346 | args.id_len = scnprintf(args.id, sizeof(args.id), | |
4347 | "%s/%s %u", | |
4348 | clp->cl_ipaddr, | |
4349 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4350 | RPC_DISPLAY_ADDR), | |
4351 | clp->cl_id_uniquifier); | |
4352 | ||
4353 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
4354 | ||
4355 | if (status != NFS4ERR_CLID_INUSE) | |
4356 | break; | |
4357 | ||
4358 | if (signalled()) | |
4359 | break; | |
4360 | ||
4361 | if (++clp->cl_id_uniquifier == 0) | |
4362 | break; | |
4363 | } | |
4364 | ||
4365 | dprintk("<-- %s status= %d\n", __func__, status); | |
4366 | return status; | |
4367 | } | |
4368 | ||
2050f0cc AA |
4369 | struct nfs4_get_lease_time_data { |
4370 | struct nfs4_get_lease_time_args *args; | |
4371 | struct nfs4_get_lease_time_res *res; | |
4372 | struct nfs_client *clp; | |
4373 | }; | |
4374 | ||
4375 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
4376 | void *calldata) | |
4377 | { | |
4378 | int ret; | |
4379 | struct nfs4_get_lease_time_data *data = | |
4380 | (struct nfs4_get_lease_time_data *)calldata; | |
4381 | ||
4382 | dprintk("--> %s\n", __func__); | |
4383 | /* just setup sequence, do not trigger session recovery | |
4384 | since we're invoked within one */ | |
4385 | ret = nfs41_setup_sequence(data->clp->cl_session, | |
4386 | &data->args->la_seq_args, | |
4387 | &data->res->lr_seq_res, 0, task); | |
4388 | ||
4389 | BUG_ON(ret == -EAGAIN); | |
4390 | rpc_call_start(task); | |
4391 | dprintk("<-- %s\n", __func__); | |
4392 | } | |
4393 | ||
4394 | /* | |
4395 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
4396 | * from sequence operation or clientid errors. | |
4397 | */ | |
4398 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
4399 | { | |
4400 | struct nfs4_get_lease_time_data *data = | |
4401 | (struct nfs4_get_lease_time_data *)calldata; | |
4402 | ||
4403 | dprintk("--> %s\n", __func__); | |
4404 | nfs41_sequence_done(data->clp, &data->res->lr_seq_res, task->tk_status); | |
4405 | switch (task->tk_status) { | |
4406 | case -NFS4ERR_DELAY: | |
4407 | case -NFS4ERR_GRACE: | |
4408 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
4409 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
4410 | task->tk_status = 0; | |
eedc020e | 4411 | nfs4_restart_rpc(task, data->clp); |
2050f0cc AA |
4412 | return; |
4413 | } | |
4414 | nfs41_sequence_free_slot(data->clp, &data->res->lr_seq_res); | |
4415 | dprintk("<-- %s\n", __func__); | |
4416 | } | |
4417 | ||
4418 | struct rpc_call_ops nfs4_get_lease_time_ops = { | |
4419 | .rpc_call_prepare = nfs4_get_lease_time_prepare, | |
4420 | .rpc_call_done = nfs4_get_lease_time_done, | |
4421 | }; | |
4422 | ||
4423 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
4424 | { | |
4425 | struct rpc_task *task; | |
4426 | struct nfs4_get_lease_time_args args; | |
4427 | struct nfs4_get_lease_time_res res = { | |
4428 | .lr_fsinfo = fsinfo, | |
4429 | }; | |
4430 | struct nfs4_get_lease_time_data data = { | |
4431 | .args = &args, | |
4432 | .res = &res, | |
4433 | .clp = clp, | |
4434 | }; | |
4435 | struct rpc_message msg = { | |
4436 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
4437 | .rpc_argp = &args, | |
4438 | .rpc_resp = &res, | |
4439 | }; | |
4440 | struct rpc_task_setup task_setup = { | |
4441 | .rpc_client = clp->cl_rpcclient, | |
4442 | .rpc_message = &msg, | |
4443 | .callback_ops = &nfs4_get_lease_time_ops, | |
4444 | .callback_data = &data | |
4445 | }; | |
4446 | int status; | |
4447 | ||
4448 | res.lr_seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE; | |
4449 | dprintk("--> %s\n", __func__); | |
4450 | task = rpc_run_task(&task_setup); | |
4451 | ||
4452 | if (IS_ERR(task)) | |
4453 | status = PTR_ERR(task); | |
4454 | else { | |
4455 | status = task->tk_status; | |
4456 | rpc_put_task(task); | |
4457 | } | |
4458 | dprintk("<-- %s return %d\n", __func__, status); | |
4459 | ||
4460 | return status; | |
4461 | } | |
4462 | ||
b73dafa7 RL |
4463 | /* |
4464 | * Reset a slot table | |
4465 | */ | |
4466 | static int nfs4_reset_slot_table(struct nfs4_slot_table *tbl, int max_slots, | |
4467 | int old_max_slots, int ivalue) | |
ac72b7b3 | 4468 | { |
b73dafa7 | 4469 | int i; |
ac72b7b3 AA |
4470 | int ret = 0; |
4471 | ||
b73dafa7 | 4472 | dprintk("--> %s: max_reqs=%u, tbl %p\n", __func__, max_slots, tbl); |
ac72b7b3 | 4473 | |
b73dafa7 RL |
4474 | /* |
4475 | * Until we have dynamic slot table adjustment, insist | |
4476 | * upon the same slot table size | |
4477 | */ | |
ac72b7b3 AA |
4478 | if (max_slots != old_max_slots) { |
4479 | dprintk("%s reset slot table does't match old\n", | |
4480 | __func__); | |
4481 | ret = -EINVAL; /*XXX NFS4ERR_REQ_TOO_BIG ? */ | |
4482 | goto out; | |
4483 | } | |
4484 | spin_lock(&tbl->slot_tbl_lock); | |
4485 | for (i = 0; i < max_slots; ++i) | |
b73dafa7 | 4486 | tbl->slots[i].seq_nr = ivalue; |
ac72b7b3 AA |
4487 | tbl->highest_used_slotid = -1; |
4488 | spin_unlock(&tbl->slot_tbl_lock); | |
4489 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
4490 | tbl, tbl->slots, tbl->max_slots); | |
4491 | out: | |
4492 | dprintk("<-- %s: return %d\n", __func__, ret); | |
4493 | return ret; | |
4494 | } | |
4495 | ||
b73dafa7 RL |
4496 | /* |
4497 | * Reset the forechannel and backchannel slot tables | |
4498 | */ | |
4499 | static int nfs4_reset_slot_tables(struct nfs4_session *session) | |
4500 | { | |
4501 | int status; | |
4502 | ||
4503 | status = nfs4_reset_slot_table(&session->fc_slot_table, | |
4504 | session->fc_attrs.max_reqs, | |
4505 | session->fc_slot_table.max_slots, | |
4506 | 1); | |
f8625a6a RL |
4507 | if (status) |
4508 | return status; | |
4509 | ||
4510 | status = nfs4_reset_slot_table(&session->bc_slot_table, | |
4511 | session->bc_attrs.max_reqs, | |
4512 | session->bc_slot_table.max_slots, | |
4513 | 0); | |
b73dafa7 RL |
4514 | return status; |
4515 | } | |
4516 | ||
f8625a6a RL |
4517 | /* Destroy the slot table */ |
4518 | static void nfs4_destroy_slot_tables(struct nfs4_session *session) | |
4519 | { | |
4520 | if (session->fc_slot_table.slots != NULL) { | |
4521 | kfree(session->fc_slot_table.slots); | |
4522 | session->fc_slot_table.slots = NULL; | |
4523 | } | |
4524 | if (session->bc_slot_table.slots != NULL) { | |
4525 | kfree(session->bc_slot_table.slots); | |
4526 | session->bc_slot_table.slots = NULL; | |
4527 | } | |
4528 | return; | |
4529 | } | |
4530 | ||
fc931582 AA |
4531 | /* |
4532 | * Initialize slot table | |
4533 | */ | |
050047ce RL |
4534 | static int nfs4_init_slot_table(struct nfs4_slot_table *tbl, |
4535 | int max_slots, int ivalue) | |
fc931582 | 4536 | { |
050047ce | 4537 | int i; |
fc931582 AA |
4538 | struct nfs4_slot *slot; |
4539 | int ret = -ENOMEM; | |
4540 | ||
4541 | BUG_ON(max_slots > NFS4_MAX_SLOT_TABLE); | |
4542 | ||
050047ce | 4543 | dprintk("--> %s: max_reqs=%u\n", __func__, max_slots); |
fc931582 AA |
4544 | |
4545 | slot = kcalloc(max_slots, sizeof(struct nfs4_slot), GFP_KERNEL); | |
4546 | if (!slot) | |
4547 | goto out; | |
4548 | for (i = 0; i < max_slots; ++i) | |
050047ce | 4549 | slot[i].seq_nr = ivalue; |
fc931582 AA |
4550 | ret = 0; |
4551 | ||
4552 | spin_lock(&tbl->slot_tbl_lock); | |
4553 | if (tbl->slots != NULL) { | |
4554 | spin_unlock(&tbl->slot_tbl_lock); | |
4555 | dprintk("%s: slot table already initialized. tbl=%p slots=%p\n", | |
4556 | __func__, tbl, tbl->slots); | |
4557 | WARN_ON(1); | |
4558 | goto out_free; | |
4559 | } | |
4560 | tbl->max_slots = max_slots; | |
4561 | tbl->slots = slot; | |
4562 | tbl->highest_used_slotid = -1; /* no slot is currently used */ | |
4563 | spin_unlock(&tbl->slot_tbl_lock); | |
4564 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
4565 | tbl, tbl->slots, tbl->max_slots); | |
4566 | out: | |
4567 | dprintk("<-- %s: return %d\n", __func__, ret); | |
4568 | return ret; | |
050047ce | 4569 | |
fc931582 AA |
4570 | out_free: |
4571 | kfree(slot); | |
4572 | goto out; | |
4573 | } | |
4574 | ||
050047ce RL |
4575 | /* |
4576 | * Initialize the forechannel and backchannel tables | |
4577 | */ | |
4578 | static int nfs4_init_slot_tables(struct nfs4_session *session) | |
4579 | { | |
4580 | int status; | |
4581 | ||
4582 | status = nfs4_init_slot_table(&session->fc_slot_table, | |
4583 | session->fc_attrs.max_reqs, 1); | |
f8625a6a RL |
4584 | if (status) |
4585 | return status; | |
050047ce | 4586 | |
f8625a6a RL |
4587 | status = nfs4_init_slot_table(&session->bc_slot_table, |
4588 | session->bc_attrs.max_reqs, 0); | |
4589 | if (status) | |
4590 | nfs4_destroy_slot_tables(session); | |
4591 | ||
4592 | return status; | |
557134a3 AA |
4593 | } |
4594 | ||
4595 | struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) | |
4596 | { | |
4597 | struct nfs4_session *session; | |
4598 | struct nfs4_slot_table *tbl; | |
4599 | ||
4600 | session = kzalloc(sizeof(struct nfs4_session), GFP_KERNEL); | |
4601 | if (!session) | |
4602 | return NULL; | |
76db6d95 AA |
4603 | |
4604 | set_bit(NFS4CLNT_SESSION_SETUP, &clp->cl_state); | |
4605 | /* | |
4606 | * The create session reply races with the server back | |
4607 | * channel probe. Mark the client NFS_CS_SESSION_INITING | |
4608 | * so that the client back channel can find the | |
4609 | * nfs_client struct | |
4610 | */ | |
4611 | clp->cl_cons_state = NFS_CS_SESSION_INITING; | |
4612 | ||
557134a3 AA |
4613 | tbl = &session->fc_slot_table; |
4614 | spin_lock_init(&tbl->slot_tbl_lock); | |
f8625a6a RL |
4615 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); |
4616 | ||
4617 | tbl = &session->bc_slot_table; | |
4618 | spin_lock_init(&tbl->slot_tbl_lock); | |
4619 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); | |
4620 | ||
557134a3 AA |
4621 | session->clp = clp; |
4622 | return session; | |
4623 | } | |
4624 | ||
4625 | void nfs4_destroy_session(struct nfs4_session *session) | |
4626 | { | |
5a0ffe54 AA |
4627 | nfs4_proc_destroy_session(session); |
4628 | dprintk("%s Destroy backchannel for xprt %p\n", | |
4629 | __func__, session->clp->cl_rpcclient->cl_xprt); | |
4630 | xprt_destroy_backchannel(session->clp->cl_rpcclient->cl_xprt, | |
4631 | NFS41_BC_MIN_CALLBACKS); | |
f8625a6a | 4632 | nfs4_destroy_slot_tables(session); |
557134a3 AA |
4633 | kfree(session); |
4634 | } | |
4635 | ||
fc931582 AA |
4636 | /* |
4637 | * Initialize the values to be used by the client in CREATE_SESSION | |
4638 | * If nfs4_init_session set the fore channel request and response sizes, | |
4639 | * use them. | |
4640 | * | |
4641 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
4642 | * always set csa_cachethis to FALSE because the current implementation | |
4643 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
4644 | */ | |
4645 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
4646 | { | |
4647 | struct nfs4_session *session = args->client->cl_session; | |
4648 | unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz, | |
4649 | mxresp_sz = session->fc_attrs.max_resp_sz; | |
4650 | ||
4651 | if (mxrqst_sz == 0) | |
4652 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
4653 | if (mxresp_sz == 0) | |
4654 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
4655 | /* Fore channel attributes */ | |
4656 | args->fc_attrs.headerpadsz = 0; | |
4657 | args->fc_attrs.max_rqst_sz = mxrqst_sz; | |
4658 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
4659 | args->fc_attrs.max_resp_sz_cached = mxresp_sz; | |
4660 | args->fc_attrs.max_ops = NFS4_MAX_OPS; | |
4661 | args->fc_attrs.max_reqs = session->clp->cl_rpcclient->cl_xprt->max_reqs; | |
4662 | ||
4663 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
4664 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
4665 | __func__, | |
4666 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
4667 | args->fc_attrs.max_resp_sz_cached, args->fc_attrs.max_ops, | |
4668 | args->fc_attrs.max_reqs); | |
4669 | ||
4670 | /* Back channel attributes */ | |
4671 | args->bc_attrs.headerpadsz = 0; | |
4672 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; | |
4673 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
4674 | args->bc_attrs.max_resp_sz_cached = 0; | |
4675 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
4676 | args->bc_attrs.max_reqs = 1; | |
4677 | ||
4678 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
4679 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
4680 | __func__, | |
4681 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
4682 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
4683 | args->bc_attrs.max_reqs); | |
4684 | } | |
4685 | ||
8d35301d AA |
4686 | static int _verify_channel_attr(char *chan, char *attr_name, u32 sent, u32 rcvd) |
4687 | { | |
4688 | if (rcvd <= sent) | |
4689 | return 0; | |
4690 | printk(KERN_WARNING "%s: Session INVALID: %s channel %s increased. " | |
4691 | "sent=%u rcvd=%u\n", __func__, chan, attr_name, sent, rcvd); | |
4692 | return -EINVAL; | |
4693 | } | |
4694 | ||
4695 | #define _verify_fore_channel_attr(_name_) \ | |
4696 | _verify_channel_attr("fore", #_name_, \ | |
4697 | args->fc_attrs._name_, \ | |
4698 | session->fc_attrs._name_) | |
4699 | ||
4700 | #define _verify_back_channel_attr(_name_) \ | |
4701 | _verify_channel_attr("back", #_name_, \ | |
4702 | args->bc_attrs._name_, \ | |
4703 | session->bc_attrs._name_) | |
4704 | ||
4705 | /* | |
4706 | * The server is not allowed to increase the fore channel header pad size, | |
4707 | * maximum response size, or maximum number of operations. | |
4708 | * | |
4709 | * The back channel attributes are only negotiatied down: We send what the | |
4710 | * (back channel) server insists upon. | |
4711 | */ | |
4712 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, | |
4713 | struct nfs4_session *session) | |
4714 | { | |
4715 | int ret = 0; | |
4716 | ||
4717 | ret |= _verify_fore_channel_attr(headerpadsz); | |
4718 | ret |= _verify_fore_channel_attr(max_resp_sz); | |
4719 | ret |= _verify_fore_channel_attr(max_ops); | |
4720 | ||
4721 | ret |= _verify_back_channel_attr(headerpadsz); | |
4722 | ret |= _verify_back_channel_attr(max_rqst_sz); | |
4723 | ret |= _verify_back_channel_attr(max_resp_sz); | |
4724 | ret |= _verify_back_channel_attr(max_resp_sz_cached); | |
4725 | ret |= _verify_back_channel_attr(max_ops); | |
4726 | ret |= _verify_back_channel_attr(max_reqs); | |
4727 | ||
4728 | return ret; | |
4729 | } | |
4730 | ||
fc931582 AA |
4731 | static int _nfs4_proc_create_session(struct nfs_client *clp) |
4732 | { | |
4733 | struct nfs4_session *session = clp->cl_session; | |
4734 | struct nfs41_create_session_args args = { | |
4735 | .client = clp, | |
4736 | .cb_program = NFS4_CALLBACK, | |
4737 | }; | |
4738 | struct nfs41_create_session_res res = { | |
4739 | .client = clp, | |
4740 | }; | |
4741 | struct rpc_message msg = { | |
4742 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
4743 | .rpc_argp = &args, | |
4744 | .rpc_resp = &res, | |
4745 | }; | |
4746 | int status; | |
4747 | ||
4748 | nfs4_init_channel_attrs(&args); | |
0f91421e | 4749 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 AA |
4750 | |
4751 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, 0); | |
4752 | ||
8d35301d AA |
4753 | if (!status) |
4754 | /* Verify the session's negotiated channel_attrs values */ | |
4755 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
4756 | if (!status) { |
4757 | /* Increment the clientid slot sequence id */ | |
4758 | clp->cl_seqid++; | |
4759 | } | |
4760 | ||
4761 | return status; | |
4762 | } | |
4763 | ||
4764 | /* | |
4765 | * Issues a CREATE_SESSION operation to the server. | |
4766 | * It is the responsibility of the caller to verify the session is | |
4767 | * expired before calling this routine. | |
4768 | */ | |
ac72b7b3 | 4769 | int nfs4_proc_create_session(struct nfs_client *clp, int reset) |
fc931582 AA |
4770 | { |
4771 | int status; | |
4772 | unsigned *ptr; | |
4773 | struct nfs_fsinfo fsinfo; | |
4774 | struct nfs4_session *session = clp->cl_session; | |
4775 | ||
4776 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
4777 | ||
4778 | status = _nfs4_proc_create_session(clp); | |
4779 | if (status) | |
4780 | goto out; | |
4781 | ||
ac72b7b3 AA |
4782 | /* Init or reset the fore channel */ |
4783 | if (reset) | |
b73dafa7 | 4784 | status = nfs4_reset_slot_tables(session); |
ac72b7b3 | 4785 | else |
050047ce | 4786 | status = nfs4_init_slot_tables(session); |
fc931582 AA |
4787 | dprintk("fore channel slot table initialization returned %d\n", status); |
4788 | if (status) | |
4789 | goto out; | |
4790 | ||
4791 | ptr = (unsigned *)&session->sess_id.data[0]; | |
4792 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
4793 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
4794 | ||
ac72b7b3 AA |
4795 | if (reset) |
4796 | /* Lease time is aleady set */ | |
4797 | goto out; | |
4798 | ||
fc931582 AA |
4799 | /* Get the lease time */ |
4800 | status = nfs4_proc_get_lease_time(clp, &fsinfo); | |
4801 | if (status == 0) { | |
4802 | /* Update lease time and schedule renewal */ | |
4803 | spin_lock(&clp->cl_lock); | |
4804 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
4805 | clp->cl_last_renewal = jiffies; | |
4806 | clear_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state); | |
4807 | spin_unlock(&clp->cl_lock); | |
4808 | ||
4809 | nfs4_schedule_state_renewal(clp); | |
4810 | } | |
4811 | out: | |
4812 | dprintk("<-- %s\n", __func__); | |
4813 | return status; | |
4814 | } | |
4815 | ||
0f3e66c6 AA |
4816 | /* |
4817 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
4818 | * The caller must serialize access to this routine. | |
4819 | */ | |
4820 | int nfs4_proc_destroy_session(struct nfs4_session *session) | |
4821 | { | |
4822 | int status = 0; | |
4823 | struct rpc_message msg; | |
4824 | ||
4825 | dprintk("--> nfs4_proc_destroy_session\n"); | |
4826 | ||
4827 | /* session is still being setup */ | |
4828 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
4829 | return status; | |
4830 | ||
4831 | msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION]; | |
4832 | msg.rpc_argp = session; | |
4833 | msg.rpc_resp = NULL; | |
4834 | msg.rpc_cred = NULL; | |
4835 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, 0); | |
4836 | ||
4837 | if (status) | |
4838 | printk(KERN_WARNING | |
4839 | "Got error %d from the server on DESTROY_SESSION. " | |
4840 | "Session has been destroyed regardless...\n", status); | |
4841 | ||
4842 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
4843 | return status; | |
4844 | } | |
4845 | ||
fccba804 TM |
4846 | int nfs4_init_session(struct nfs_server *server) |
4847 | { | |
4848 | struct nfs_client *clp = server->nfs_client; | |
4849 | int ret; | |
4850 | ||
4851 | if (!nfs4_has_session(clp)) | |
4852 | return 0; | |
4853 | ||
4854 | clp->cl_session->fc_attrs.max_rqst_sz = server->wsize; | |
4855 | clp->cl_session->fc_attrs.max_resp_sz = server->rsize; | |
4856 | ret = nfs4_recover_expired_lease(server); | |
4857 | if (!ret) | |
4858 | ret = nfs4_check_client_ready(clp); | |
4859 | return ret; | |
4860 | } | |
4861 | ||
fc01cea9 AA |
4862 | /* |
4863 | * Renew the cl_session lease. | |
4864 | */ | |
4865 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
4866 | { | |
4867 | struct nfs4_sequence_args args; | |
4868 | struct nfs4_sequence_res res; | |
4869 | ||
4870 | struct rpc_message msg = { | |
4871 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
4872 | .rpc_argp = &args, | |
4873 | .rpc_resp = &res, | |
4874 | .rpc_cred = cred, | |
4875 | }; | |
4876 | ||
4877 | args.sa_cache_this = 0; | |
4878 | ||
4879 | return nfs4_call_sync_sequence(clp, clp->cl_rpcclient, &msg, &args, | |
4880 | &res, 0); | |
4881 | } | |
4882 | ||
4883 | void nfs41_sequence_call_done(struct rpc_task *task, void *data) | |
4884 | { | |
4885 | struct nfs_client *clp = (struct nfs_client *)data; | |
4886 | ||
4887 | nfs41_sequence_done(clp, task->tk_msg.rpc_resp, task->tk_status); | |
4888 | ||
4889 | if (task->tk_status < 0) { | |
4890 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
4891 | ||
4892 | if (_nfs4_async_handle_error(task, NULL, clp, NULL) | |
4893 | == -EAGAIN) { | |
eedc020e | 4894 | nfs4_restart_rpc(task, clp); |
fc01cea9 AA |
4895 | return; |
4896 | } | |
4897 | } | |
4898 | nfs41_sequence_free_slot(clp, task->tk_msg.rpc_resp); | |
4899 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); | |
4900 | ||
fc01cea9 AA |
4901 | kfree(task->tk_msg.rpc_argp); |
4902 | kfree(task->tk_msg.rpc_resp); | |
4903 | ||
4904 | dprintk("<-- %s\n", __func__); | |
4905 | } | |
4906 | ||
4907 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
4908 | { | |
4909 | struct nfs_client *clp; | |
4910 | struct nfs4_sequence_args *args; | |
4911 | struct nfs4_sequence_res *res; | |
4912 | ||
4913 | clp = (struct nfs_client *)data; | |
4914 | args = task->tk_msg.rpc_argp; | |
4915 | res = task->tk_msg.rpc_resp; | |
4916 | ||
4917 | if (nfs4_setup_sequence(clp, args, res, 0, task)) | |
4918 | return; | |
4919 | rpc_call_start(task); | |
4920 | } | |
4921 | ||
4922 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
4923 | .rpc_call_done = nfs41_sequence_call_done, | |
4924 | .rpc_call_prepare = nfs41_sequence_prepare, | |
4925 | }; | |
4926 | ||
4927 | static int nfs41_proc_async_sequence(struct nfs_client *clp, | |
4928 | struct rpc_cred *cred) | |
4929 | { | |
4930 | struct nfs4_sequence_args *args; | |
4931 | struct nfs4_sequence_res *res; | |
4932 | struct rpc_message msg = { | |
4933 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
4934 | .rpc_cred = cred, | |
4935 | }; | |
4936 | ||
4937 | args = kzalloc(sizeof(*args), GFP_KERNEL); | |
4938 | if (!args) | |
4939 | return -ENOMEM; | |
4940 | res = kzalloc(sizeof(*res), GFP_KERNEL); | |
4941 | if (!res) { | |
4942 | kfree(args); | |
4943 | return -ENOMEM; | |
4944 | } | |
4945 | res->sr_slotid = NFS4_MAX_SLOT_TABLE; | |
4946 | msg.rpc_argp = args; | |
4947 | msg.rpc_resp = res; | |
4948 | ||
4949 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, | |
4950 | &nfs41_sequence_ops, (void *)clp); | |
4951 | } | |
4952 | ||
557134a3 AA |
4953 | #endif /* CONFIG_NFS_V4_1 */ |
4954 | ||
591d71cb | 4955 | struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 4956 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 4957 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
4958 | .recover_open = nfs4_open_reclaim, |
4959 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 4960 | .establish_clid = nfs4_init_clientid, |
90a16617 | 4961 | .get_clid_cred = nfs4_get_setclientid_cred, |
1da177e4 LT |
4962 | }; |
4963 | ||
591d71cb AA |
4964 | #if defined(CONFIG_NFS_V4_1) |
4965 | struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { | |
4966 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, | |
4967 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
4968 | .recover_open = nfs4_open_reclaim, | |
4969 | .recover_lock = nfs4_lock_reclaim, | |
4970 | .establish_clid = nfs4_proc_exchange_id, | |
b4b82607 | 4971 | .get_clid_cred = nfs4_get_exchange_id_cred, |
591d71cb AA |
4972 | }; |
4973 | #endif /* CONFIG_NFS_V4_1 */ | |
4974 | ||
4975 | struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { | |
4976 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, | |
4977 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
4978 | .recover_open = nfs4_open_expired, | |
4979 | .recover_lock = nfs4_lock_expired, | |
4980 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 4981 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
4982 | }; |
4983 | ||
4984 | #if defined(CONFIG_NFS_V4_1) | |
4985 | struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { | |
7eff03ae | 4986 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 4987 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
1da177e4 LT |
4988 | .recover_open = nfs4_open_expired, |
4989 | .recover_lock = nfs4_lock_expired, | |
591d71cb | 4990 | .establish_clid = nfs4_proc_exchange_id, |
b4b82607 | 4991 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 4992 | }; |
591d71cb | 4993 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 4994 | |
29fba38b BH |
4995 | struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
4996 | .sched_state_renewal = nfs4_proc_async_renew, | |
a7b72103 | 4997 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 4998 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
4999 | }; |
5000 | ||
5001 | #if defined(CONFIG_NFS_V4_1) | |
5002 | struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { | |
5003 | .sched_state_renewal = nfs41_proc_async_sequence, | |
a7b72103 | 5004 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 5005 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
5006 | }; |
5007 | #endif | |
5008 | ||
5009 | /* | |
5010 | * Per minor version reboot and network partition recovery ops | |
5011 | */ | |
5012 | ||
591d71cb AA |
5013 | struct nfs4_state_recovery_ops *nfs4_reboot_recovery_ops[] = { |
5014 | &nfs40_reboot_recovery_ops, | |
5015 | #if defined(CONFIG_NFS_V4_1) | |
5016 | &nfs41_reboot_recovery_ops, | |
5017 | #endif | |
5018 | }; | |
5019 | ||
5020 | struct nfs4_state_recovery_ops *nfs4_nograce_recovery_ops[] = { | |
5021 | &nfs40_nograce_recovery_ops, | |
5022 | #if defined(CONFIG_NFS_V4_1) | |
5023 | &nfs41_nograce_recovery_ops, | |
5024 | #endif | |
5025 | }; | |
5026 | ||
29fba38b BH |
5027 | struct nfs4_state_maintenance_ops *nfs4_state_renewal_ops[] = { |
5028 | &nfs40_state_renewal_ops, | |
5029 | #if defined(CONFIG_NFS_V4_1) | |
5030 | &nfs41_state_renewal_ops, | |
5031 | #endif | |
5032 | }; | |
5033 | ||
92e1d5be | 5034 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
5035 | .permission = nfs_permission, |
5036 | .getattr = nfs_getattr, | |
5037 | .setattr = nfs_setattr, | |
5038 | .getxattr = nfs4_getxattr, | |
5039 | .setxattr = nfs4_setxattr, | |
5040 | .listxattr = nfs4_listxattr, | |
5041 | }; | |
5042 | ||
509de811 | 5043 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
5044 | .version = 4, /* protocol version */ |
5045 | .dentry_ops = &nfs4_dentry_operations, | |
5046 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 5047 | .file_inode_ops = &nfs4_file_inode_operations, |
1da177e4 LT |
5048 | .getroot = nfs4_proc_get_root, |
5049 | .getattr = nfs4_proc_getattr, | |
5050 | .setattr = nfs4_proc_setattr, | |
2b3de441 | 5051 | .lookupfh = nfs4_proc_lookupfh, |
1da177e4 LT |
5052 | .lookup = nfs4_proc_lookup, |
5053 | .access = nfs4_proc_access, | |
5054 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
5055 | .create = nfs4_proc_create, |
5056 | .remove = nfs4_proc_remove, | |
5057 | .unlink_setup = nfs4_proc_unlink_setup, | |
5058 | .unlink_done = nfs4_proc_unlink_done, | |
5059 | .rename = nfs4_proc_rename, | |
5060 | .link = nfs4_proc_link, | |
5061 | .symlink = nfs4_proc_symlink, | |
5062 | .mkdir = nfs4_proc_mkdir, | |
5063 | .rmdir = nfs4_proc_remove, | |
5064 | .readdir = nfs4_proc_readdir, | |
5065 | .mknod = nfs4_proc_mknod, | |
5066 | .statfs = nfs4_proc_statfs, | |
5067 | .fsinfo = nfs4_proc_fsinfo, | |
5068 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 5069 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
5070 | .decode_dirent = nfs4_decode_dirent, |
5071 | .read_setup = nfs4_proc_read_setup, | |
ec06c096 | 5072 | .read_done = nfs4_read_done, |
1da177e4 | 5073 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 5074 | .write_done = nfs4_write_done, |
1da177e4 | 5075 | .commit_setup = nfs4_proc_commit_setup, |
788e7a89 | 5076 | .commit_done = nfs4_commit_done, |
1da177e4 | 5077 | .lock = nfs4_proc_lock, |
e50a1c2e | 5078 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 5079 | .close_context = nfs4_close_context, |
1da177e4 LT |
5080 | }; |
5081 | ||
5082 | /* | |
5083 | * Local variables: | |
5084 | * c-basic-offset: 8 | |
5085 | * End: | |
5086 | */ |