Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4proc.c | |
3 | * | |
4 | * Client-side procedure declarations for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/mm.h> | |
1da177e4 LT |
39 | #include <linux/delay.h> |
40 | #include <linux/errno.h> | |
41 | #include <linux/string.h> | |
5a0e3ad6 | 42 | #include <linux/slab.h> |
1da177e4 LT |
43 | #include <linux/sunrpc/clnt.h> |
44 | #include <linux/nfs.h> | |
45 | #include <linux/nfs4.h> | |
46 | #include <linux/nfs_fs.h> | |
47 | #include <linux/nfs_page.h> | |
1da177e4 | 48 | #include <linux/namei.h> |
02a913a7 | 49 | #include <linux/mount.h> |
99fe60d0 | 50 | #include <linux/module.h> |
5a0ffe54 | 51 | #include <linux/sunrpc/bc_xprt.h> |
64c2ce8b | 52 | #include <linux/xattr.h> |
c7a360b0 | 53 | #include <linux/utsname.h> |
1da177e4 | 54 | |
4ce79717 | 55 | #include "nfs4_fs.h" |
1da177e4 | 56 | #include "delegation.h" |
101070ca | 57 | #include "internal.h" |
006ea73e | 58 | #include "iostat.h" |
fc931582 | 59 | #include "callback.h" |
b1f69b75 | 60 | #include "pnfs.h" |
1da177e4 LT |
61 | |
62 | #define NFSDBG_FACILITY NFSDBG_PROC | |
63 | ||
2066fe89 | 64 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
65 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
66 | ||
a78cb57a TM |
67 | #define NFS4_MAX_LOOP_ON_RECOVER (10) |
68 | ||
cdd4e68b | 69 | struct nfs4_opendata; |
864472e9 | 70 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
b257957e | 71 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 72 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
9e33bed5 | 73 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); |
9936781d TM |
74 | static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr); |
75 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); | |
0ab64e0e TM |
76 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
77 | struct nfs_fattr *fattr, struct iattr *sattr, | |
78 | struct nfs4_state *state); | |
1da177e4 | 79 | |
1da177e4 | 80 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 81 | static int nfs4_map_errors(int err) |
1da177e4 | 82 | { |
52567b03 TM |
83 | if (err >= -1000) |
84 | return err; | |
85 | switch (err) { | |
86 | case -NFS4ERR_RESOURCE: | |
87 | return -EREMOTEIO; | |
3ddeb7c5 TM |
88 | case -NFS4ERR_BADOWNER: |
89 | case -NFS4ERR_BADNAME: | |
90 | return -EINVAL; | |
52567b03 | 91 | default: |
1da177e4 | 92 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 93 | __func__, -err); |
52567b03 | 94 | break; |
1da177e4 | 95 | } |
52567b03 | 96 | return -EIO; |
1da177e4 LT |
97 | } |
98 | ||
99 | /* | |
100 | * This is our standard bitmap for GETATTR requests. | |
101 | */ | |
102 | const u32 nfs4_fattr_bitmap[2] = { | |
103 | FATTR4_WORD0_TYPE | |
104 | | FATTR4_WORD0_CHANGE | |
105 | | FATTR4_WORD0_SIZE | |
106 | | FATTR4_WORD0_FSID | |
107 | | FATTR4_WORD0_FILEID, | |
108 | FATTR4_WORD1_MODE | |
109 | | FATTR4_WORD1_NUMLINKS | |
110 | | FATTR4_WORD1_OWNER | |
111 | | FATTR4_WORD1_OWNER_GROUP | |
112 | | FATTR4_WORD1_RAWDEV | |
113 | | FATTR4_WORD1_SPACE_USED | |
114 | | FATTR4_WORD1_TIME_ACCESS | |
115 | | FATTR4_WORD1_TIME_METADATA | |
116 | | FATTR4_WORD1_TIME_MODIFY | |
117 | }; | |
118 | ||
119 | const u32 nfs4_statfs_bitmap[2] = { | |
120 | FATTR4_WORD0_FILES_AVAIL | |
121 | | FATTR4_WORD0_FILES_FREE | |
122 | | FATTR4_WORD0_FILES_TOTAL, | |
123 | FATTR4_WORD1_SPACE_AVAIL | |
124 | | FATTR4_WORD1_SPACE_FREE | |
125 | | FATTR4_WORD1_SPACE_TOTAL | |
126 | }; | |
127 | ||
4ce79717 | 128 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
129 | FATTR4_WORD0_MAXLINK |
130 | | FATTR4_WORD0_MAXNAME, | |
131 | 0 | |
132 | }; | |
133 | ||
134 | const u32 nfs4_fsinfo_bitmap[2] = { FATTR4_WORD0_MAXFILESIZE | |
135 | | FATTR4_WORD0_MAXREAD | |
136 | | FATTR4_WORD0_MAXWRITE | |
137 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 138 | FATTR4_WORD1_TIME_DELTA |
504913fb | 139 | | FATTR4_WORD1_FS_LAYOUT_TYPES |
1da177e4 LT |
140 | }; |
141 | ||
830b8e33 MN |
142 | const u32 nfs4_fs_locations_bitmap[2] = { |
143 | FATTR4_WORD0_TYPE | |
144 | | FATTR4_WORD0_CHANGE | |
145 | | FATTR4_WORD0_SIZE | |
146 | | FATTR4_WORD0_FSID | |
147 | | FATTR4_WORD0_FILEID | |
148 | | FATTR4_WORD0_FS_LOCATIONS, | |
149 | FATTR4_WORD1_MODE | |
150 | | FATTR4_WORD1_NUMLINKS | |
151 | | FATTR4_WORD1_OWNER | |
152 | | FATTR4_WORD1_OWNER_GROUP | |
153 | | FATTR4_WORD1_RAWDEV | |
154 | | FATTR4_WORD1_SPACE_USED | |
155 | | FATTR4_WORD1_TIME_ACCESS | |
156 | | FATTR4_WORD1_TIME_METADATA | |
157 | | FATTR4_WORD1_TIME_MODIFY | |
158 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
159 | }; | |
160 | ||
bc4785cd | 161 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
162 | struct nfs4_readdir_arg *readdir) |
163 | { | |
0dbb4c67 | 164 | __be32 *start, *p; |
1da177e4 LT |
165 | |
166 | BUG_ON(readdir->count < 80); | |
167 | if (cookie > 2) { | |
b7ef1956 | 168 | readdir->cookie = cookie; |
1da177e4 LT |
169 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
170 | return; | |
171 | } | |
172 | ||
173 | readdir->cookie = 0; | |
174 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
175 | if (cookie == 2) | |
176 | return; | |
177 | ||
178 | /* | |
179 | * NFSv4 servers do not return entries for '.' and '..' | |
180 | * Therefore, we fake these entries here. We let '.' | |
181 | * have cookie 0 and '..' have cookie 1. Note that | |
182 | * when talking to the server, we always send cookie 0 | |
183 | * instead of 1 or 2. | |
184 | */ | |
0dbb4c67 | 185 | start = p = kmap_atomic(*readdir->pages, KM_USER0); |
1da177e4 LT |
186 | |
187 | if (cookie == 0) { | |
188 | *p++ = xdr_one; /* next */ | |
189 | *p++ = xdr_zero; /* cookie, first word */ | |
190 | *p++ = xdr_one; /* cookie, second word */ | |
191 | *p++ = xdr_one; /* entry len */ | |
192 | memcpy(p, ".\0\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_inode)); |
1da177e4 LT |
198 | } |
199 | ||
200 | *p++ = xdr_one; /* next */ | |
201 | *p++ = xdr_zero; /* cookie, first word */ | |
202 | *p++ = xdr_two; /* cookie, second word */ | |
203 | *p++ = xdr_two; /* entry len */ | |
204 | memcpy(p, "..\0\0", 4); /* entry */ | |
205 | p++; | |
206 | *p++ = xdr_one; /* bitmap length */ | |
207 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
208 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 209 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
210 | |
211 | readdir->pgbase = (char *)p - (char *)start; | |
212 | readdir->count -= readdir->pgbase; | |
213 | kunmap_atomic(start, KM_USER0); | |
214 | } | |
215 | ||
65de872e TM |
216 | static int nfs4_wait_clnt_recover(struct nfs_client *clp) |
217 | { | |
218 | int res; | |
219 | ||
220 | might_sleep(); | |
221 | ||
e005e804 | 222 | res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING, |
72cb77f4 | 223 | nfs_wait_bit_killable, TASK_KILLABLE); |
65de872e TM |
224 | return res; |
225 | } | |
226 | ||
227 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) | |
228 | { | |
229 | int res = 0; | |
230 | ||
231 | might_sleep(); | |
232 | ||
233 | if (*timeout <= 0) | |
234 | *timeout = NFS4_POLL_RETRY_MIN; | |
235 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
236 | *timeout = NFS4_POLL_RETRY_MAX; | |
237 | schedule_timeout_killable(*timeout); | |
238 | if (fatal_signal_pending(current)) | |
239 | res = -ERESTARTSYS; | |
240 | *timeout <<= 1; | |
241 | return res; | |
242 | } | |
243 | ||
244 | /* This is the error handling routine for processes that are allowed | |
245 | * to sleep. | |
246 | */ | |
b064eca2 | 247 | static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
65de872e TM |
248 | { |
249 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 250 | struct nfs4_state *state = exception->state; |
65de872e TM |
251 | int ret = errorcode; |
252 | ||
253 | exception->retry = 0; | |
254 | switch(errorcode) { | |
255 | case 0: | |
256 | return 0; | |
9e33bed5 TM |
257 | case -NFS4ERR_ADMIN_REVOKED: |
258 | case -NFS4ERR_BAD_STATEID: | |
259 | case -NFS4ERR_OPENMODE: | |
260 | if (state == NULL) | |
261 | break; | |
0400a6b0 TM |
262 | nfs4_schedule_stateid_recovery(server, state); |
263 | goto wait_on_recovery; | |
65de872e | 264 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 265 | case -NFS4ERR_STALE_CLIENTID: |
65de872e | 266 | case -NFS4ERR_EXPIRED: |
0400a6b0 TM |
267 | nfs4_schedule_lease_recovery(clp); |
268 | goto wait_on_recovery; | |
03391693 | 269 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
270 | case -NFS4ERR_BADSESSION: |
271 | case -NFS4ERR_BADSLOT: | |
272 | case -NFS4ERR_BAD_HIGH_SLOT: | |
273 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
274 | case -NFS4ERR_DEADSESSION: | |
275 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
276 | case -NFS4ERR_SEQ_MISORDERED: | |
277 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
278 | errorcode); | |
0400a6b0 | 279 | nfs4_schedule_session_recovery(clp->cl_session); |
4745e315 | 280 | exception->retry = 1; |
b9179237 | 281 | break; |
03391693 | 282 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 283 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
284 | if (exception->timeout > HZ) { |
285 | /* We have retried a decent amount, time to | |
286 | * fail | |
287 | */ | |
288 | ret = -EBUSY; | |
289 | break; | |
290 | } | |
65de872e TM |
291 | case -NFS4ERR_GRACE: |
292 | case -NFS4ERR_DELAY: | |
2c643488 | 293 | case -EKEYEXPIRED: |
65de872e TM |
294 | ret = nfs4_delay(server->client, &exception->timeout); |
295 | if (ret != 0) | |
296 | break; | |
297 | case -NFS4ERR_OLD_STATEID: | |
298 | exception->retry = 1; | |
b064eca2 TM |
299 | break; |
300 | case -NFS4ERR_BADOWNER: | |
301 | /* The following works around a Linux server bug! */ | |
302 | case -NFS4ERR_BADNAME: | |
303 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
304 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
305 | exception->retry = 1; | |
306 | printk(KERN_WARNING "NFS: v4 server %s " | |
307 | "does not accept raw " | |
308 | "uid/gids. " | |
309 | "Reenabling the idmapper.\n", | |
310 | server->nfs_client->cl_hostname); | |
311 | } | |
65de872e TM |
312 | } |
313 | /* We failed to handle the error */ | |
314 | return nfs4_map_errors(ret); | |
0400a6b0 | 315 | wait_on_recovery: |
a2c0b9e2 TM |
316 | ret = nfs4_wait_clnt_recover(clp); |
317 | if (ret == 0) | |
318 | exception->retry = 1; | |
319 | return ret; | |
65de872e TM |
320 | } |
321 | ||
322 | ||
452e9352 | 323 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 324 | { |
1da177e4 LT |
325 | spin_lock(&clp->cl_lock); |
326 | if (time_before(clp->cl_last_renewal,timestamp)) | |
327 | clp->cl_last_renewal = timestamp; | |
328 | spin_unlock(&clp->cl_lock); | |
329 | } | |
330 | ||
452e9352 TM |
331 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
332 | { | |
333 | do_renew_lease(server->nfs_client, timestamp); | |
334 | } | |
335 | ||
cccef3b9 AA |
336 | #if defined(CONFIG_NFS_V4_1) |
337 | ||
e2c4ab3c AA |
338 | /* |
339 | * nfs4_free_slot - free a slot and efficiently update slot table. | |
340 | * | |
341 | * freeing a slot is trivially done by clearing its respective bit | |
342 | * in the bitmap. | |
343 | * If the freed slotid equals highest_used_slotid we want to update it | |
344 | * so that the server would be able to size down the slot table if needed, | |
345 | * otherwise we know that the highest_used_slotid is still in use. | |
346 | * When updating highest_used_slotid there may be "holes" in the bitmap | |
347 | * so we need to scan down from highest_used_slotid to 0 looking for the now | |
348 | * highest slotid in use. | |
349 | * If none found, highest_used_slotid is set to -1. | |
35dc1d74 TM |
350 | * |
351 | * Must be called while holding tbl->slot_tbl_lock | |
e2c4ab3c AA |
352 | */ |
353 | static void | |
dfb4f309 | 354 | nfs4_free_slot(struct nfs4_slot_table *tbl, struct nfs4_slot *free_slot) |
e2c4ab3c | 355 | { |
dfb4f309 | 356 | int free_slotid = free_slot - tbl->slots; |
e2c4ab3c AA |
357 | int slotid = free_slotid; |
358 | ||
dfb4f309 | 359 | BUG_ON(slotid < 0 || slotid >= NFS4_MAX_SLOT_TABLE); |
e2c4ab3c AA |
360 | /* clear used bit in bitmap */ |
361 | __clear_bit(slotid, tbl->used_slots); | |
362 | ||
363 | /* update highest_used_slotid when it is freed */ | |
364 | if (slotid == tbl->highest_used_slotid) { | |
365 | slotid = find_last_bit(tbl->used_slots, tbl->max_slots); | |
bcb56164 | 366 | if (slotid < tbl->max_slots) |
e2c4ab3c AA |
367 | tbl->highest_used_slotid = slotid; |
368 | else | |
369 | tbl->highest_used_slotid = -1; | |
370 | } | |
e2c4ab3c AA |
371 | dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__, |
372 | free_slotid, tbl->highest_used_slotid); | |
373 | } | |
374 | ||
3bfb0fc5 | 375 | /* |
42acd021 | 376 | * Signal state manager thread if session fore channel is drained |
3bfb0fc5 | 377 | */ |
42acd021 | 378 | static void nfs4_check_drain_fc_complete(struct nfs4_session *ses) |
3bfb0fc5 | 379 | { |
689cf5c1 AB |
380 | struct rpc_task *task; |
381 | ||
a2118c33 | 382 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state)) { |
689cf5c1 AB |
383 | task = rpc_wake_up_next(&ses->fc_slot_table.slot_tbl_waitq); |
384 | if (task) | |
385 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
3bfb0fc5 AB |
386 | return; |
387 | } | |
388 | ||
389 | if (ses->fc_slot_table.highest_used_slotid != -1) | |
390 | return; | |
391 | ||
42acd021 AA |
392 | dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__); |
393 | complete(&ses->fc_slot_table.complete); | |
394 | } | |
395 | ||
396 | /* | |
397 | * Signal state manager thread if session back channel is drained | |
398 | */ | |
399 | void nfs4_check_drain_bc_complete(struct nfs4_session *ses) | |
400 | { | |
401 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state) || | |
402 | ses->bc_slot_table.highest_used_slotid != -1) | |
403 | return; | |
404 | dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__); | |
405 | complete(&ses->bc_slot_table.complete); | |
3bfb0fc5 AB |
406 | } |
407 | ||
d185a334 | 408 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 AA |
409 | { |
410 | struct nfs4_slot_table *tbl; | |
411 | ||
d185a334 | 412 | tbl = &res->sr_session->fc_slot_table; |
dfb4f309 | 413 | if (!res->sr_slot) { |
13615871 AA |
414 | /* just wake up the next guy waiting since |
415 | * we may have not consumed a slot after all */ | |
691daf3b | 416 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 417 | return; |
13615871 | 418 | } |
ea028ac9 | 419 | |
35dc1d74 | 420 | spin_lock(&tbl->slot_tbl_lock); |
dfb4f309 | 421 | nfs4_free_slot(tbl, res->sr_slot); |
42acd021 | 422 | nfs4_check_drain_fc_complete(res->sr_session); |
35dc1d74 | 423 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 424 | res->sr_slot = NULL; |
13615871 AA |
425 | } |
426 | ||
14516c3a | 427 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c AA |
428 | { |
429 | unsigned long timestamp; | |
14516c3a | 430 | struct nfs_client *clp; |
b0df806c AA |
431 | |
432 | /* | |
433 | * sr_status remains 1 if an RPC level error occurred. The server | |
434 | * may or may not have processed the sequence operation.. | |
435 | * Proceed as if the server received and processed the sequence | |
436 | * operation. | |
437 | */ | |
438 | if (res->sr_status == 1) | |
439 | res->sr_status = NFS_OK; | |
440 | ||
441 | /* -ERESTARTSYS can result in skipping nfs41_sequence_setup */ | |
dfb4f309 | 442 | if (!res->sr_slot) |
b0df806c AA |
443 | goto out; |
444 | ||
691daf3b | 445 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
446 | switch (res->sr_status) { |
447 | case 0: | |
b0df806c | 448 | /* Update the slot's sequence and clientid lease timer */ |
dfb4f309 | 449 | ++res->sr_slot->seq_nr; |
b0df806c | 450 | timestamp = res->sr_renewal_time; |
14516c3a | 451 | clp = res->sr_session->clp; |
452e9352 | 452 | do_renew_lease(clp, timestamp); |
0629e370 | 453 | /* Check sequence flags */ |
b4410c2f TM |
454 | if (res->sr_status_flags != 0) |
455 | nfs4_schedule_lease_recovery(clp); | |
14516c3a TM |
456 | break; |
457 | case -NFS4ERR_DELAY: | |
458 | /* The server detected a resend of the RPC call and | |
459 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
460 | * of RFC5661. | |
461 | */ | |
12364a4f | 462 | dprintk("%s: slot=%td seq=%d: Operation in progress\n", |
dfb4f309 BH |
463 | __func__, |
464 | res->sr_slot - res->sr_session->fc_slot_table.slots, | |
465 | res->sr_slot->seq_nr); | |
14516c3a TM |
466 | goto out_retry; |
467 | default: | |
468 | /* Just update the slot sequence no. */ | |
dfb4f309 | 469 | ++res->sr_slot->seq_nr; |
b0df806c AA |
470 | } |
471 | out: | |
472 | /* The session may be reset by one of the error handlers. */ | |
473 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 474 | nfs41_sequence_free_slot(res); |
14516c3a TM |
475 | return 1; |
476 | out_retry: | |
d05dd4e9 | 477 | if (!rpc_restart_call(task)) |
14516c3a TM |
478 | goto out; |
479 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
480 | return 0; | |
b0df806c AA |
481 | } |
482 | ||
14516c3a TM |
483 | static int nfs4_sequence_done(struct rpc_task *task, |
484 | struct nfs4_sequence_res *res) | |
df896455 | 485 | { |
14516c3a TM |
486 | if (res->sr_session == NULL) |
487 | return 1; | |
488 | return nfs41_sequence_done(task, res); | |
df896455 TM |
489 | } |
490 | ||
510b8175 BH |
491 | /* |
492 | * nfs4_find_slot - efficiently look for a free slot | |
493 | * | |
494 | * nfs4_find_slot looks for an unset bit in the used_slots bitmap. | |
495 | * If found, we mark the slot as used, update the highest_used_slotid, | |
496 | * and respectively set up the sequence operation args. | |
497 | * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise. | |
fbcd4abc AA |
498 | * |
499 | * Note: must be called with under the slot_tbl_lock. | |
510b8175 BH |
500 | */ |
501 | static u8 | |
40ead580 | 502 | nfs4_find_slot(struct nfs4_slot_table *tbl) |
510b8175 BH |
503 | { |
504 | int slotid; | |
505 | u8 ret_id = NFS4_MAX_SLOT_TABLE; | |
506 | BUILD_BUG_ON((u8)NFS4_MAX_SLOT_TABLE != (int)NFS4_MAX_SLOT_TABLE); | |
507 | ||
510b8175 BH |
508 | dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n", |
509 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, | |
510 | tbl->max_slots); | |
511 | slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots); | |
512 | if (slotid >= tbl->max_slots) | |
513 | goto out; | |
514 | __set_bit(slotid, tbl->used_slots); | |
515 | if (slotid > tbl->highest_used_slotid) | |
516 | tbl->highest_used_slotid = slotid; | |
517 | ret_id = slotid; | |
518 | out: | |
519 | dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n", | |
520 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, ret_id); | |
510b8175 BH |
521 | return ret_id; |
522 | } | |
523 | ||
dc70d7b3 | 524 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
525 | struct nfs4_sequence_args *args, |
526 | struct nfs4_sequence_res *res, | |
527 | int cache_reply, | |
528 | struct rpc_task *task) | |
529 | { | |
fbcd4abc AA |
530 | struct nfs4_slot *slot; |
531 | struct nfs4_slot_table *tbl; | |
532 | u8 slotid; | |
533 | ||
534 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 535 | /* slot already allocated? */ |
dfb4f309 | 536 | if (res->sr_slot != NULL) |
ce5039c1 AA |
537 | return 0; |
538 | ||
fbcd4abc AA |
539 | tbl = &session->fc_slot_table; |
540 | ||
541 | spin_lock(&tbl->slot_tbl_lock); | |
a2118c33 | 542 | if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) && |
5601a00d | 543 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { |
ea028ac9 AA |
544 | /* |
545 | * The state manager will wait until the slot table is empty. | |
546 | * Schedule the reset thread | |
547 | */ | |
05f0d236 | 548 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
b069d94a | 549 | spin_unlock(&tbl->slot_tbl_lock); |
bcb56164 | 550 | dprintk("%s Schedule Session Reset\n", __func__); |
05f0d236 | 551 | return -EAGAIN; |
b069d94a AA |
552 | } |
553 | ||
689cf5c1 AB |
554 | if (!rpc_queue_empty(&tbl->slot_tbl_waitq) && |
555 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { | |
556 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
557 | spin_unlock(&tbl->slot_tbl_lock); | |
558 | dprintk("%s enforce FIFO order\n", __func__); | |
559 | return -EAGAIN; | |
560 | } | |
561 | ||
40ead580 | 562 | slotid = nfs4_find_slot(tbl); |
fbcd4abc AA |
563 | if (slotid == NFS4_MAX_SLOT_TABLE) { |
564 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
565 | spin_unlock(&tbl->slot_tbl_lock); | |
566 | dprintk("<-- %s: no free slots\n", __func__); | |
567 | return -EAGAIN; | |
568 | } | |
569 | spin_unlock(&tbl->slot_tbl_lock); | |
570 | ||
689cf5c1 | 571 | rpc_task_set_priority(task, RPC_PRIORITY_NORMAL); |
fbcd4abc | 572 | slot = tbl->slots + slotid; |
99fe60d0 | 573 | args->sa_session = session; |
fbcd4abc AA |
574 | args->sa_slotid = slotid; |
575 | args->sa_cache_this = cache_reply; | |
576 | ||
577 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr); | |
578 | ||
99fe60d0 | 579 | res->sr_session = session; |
dfb4f309 | 580 | res->sr_slot = slot; |
fbcd4abc | 581 | res->sr_renewal_time = jiffies; |
2a6e26cd | 582 | res->sr_status_flags = 0; |
fbcd4abc AA |
583 | /* |
584 | * sr_status is only set in decode_sequence, and so will remain | |
585 | * set to 1 if an rpc level failure occurs. | |
586 | */ | |
587 | res->sr_status = 1; | |
ce5039c1 AA |
588 | return 0; |
589 | } | |
dc70d7b3 | 590 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 591 | |
035168ab | 592 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
593 | struct nfs4_sequence_args *args, |
594 | struct nfs4_sequence_res *res, | |
595 | int cache_reply, | |
596 | struct rpc_task *task) | |
597 | { | |
035168ab | 598 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
599 | int ret = 0; |
600 | ||
035168ab TM |
601 | if (session == NULL) { |
602 | args->sa_session = NULL; | |
603 | res->sr_session = NULL; | |
604 | goto out; | |
605 | } | |
606 | ||
12364a4f | 607 | dprintk("--> %s clp %p session %p sr_slot %td\n", |
dfb4f309 BH |
608 | __func__, session->clp, session, res->sr_slot ? |
609 | res->sr_slot - session->fc_slot_table.slots : -1); | |
ce5039c1 | 610 | |
035168ab | 611 | ret = nfs41_setup_sequence(session, args, res, cache_reply, |
ce5039c1 | 612 | task); |
ce5039c1 AA |
613 | out: |
614 | dprintk("<-- %s status=%d\n", __func__, ret); | |
615 | return ret; | |
616 | } | |
617 | ||
618 | struct nfs41_call_sync_data { | |
035168ab | 619 | const struct nfs_server *seq_server; |
ce5039c1 AA |
620 | struct nfs4_sequence_args *seq_args; |
621 | struct nfs4_sequence_res *seq_res; | |
622 | int cache_reply; | |
623 | }; | |
624 | ||
625 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
626 | { | |
627 | struct nfs41_call_sync_data *data = calldata; | |
628 | ||
035168ab TM |
629 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
630 | ||
631 | if (nfs4_setup_sequence(data->seq_server, data->seq_args, | |
ce5039c1 AA |
632 | data->seq_res, data->cache_reply, task)) |
633 | return; | |
634 | rpc_call_start(task); | |
635 | } | |
636 | ||
b257957e AB |
637 | static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata) |
638 | { | |
639 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
640 | nfs41_call_sync_prepare(task, calldata); | |
641 | } | |
642 | ||
69ab40c4 AA |
643 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
644 | { | |
645 | struct nfs41_call_sync_data *data = calldata; | |
646 | ||
14516c3a | 647 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
648 | } |
649 | ||
ce5039c1 AA |
650 | struct rpc_call_ops nfs41_call_sync_ops = { |
651 | .rpc_call_prepare = nfs41_call_sync_prepare, | |
69ab40c4 | 652 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
653 | }; |
654 | ||
b257957e AB |
655 | struct rpc_call_ops nfs41_call_priv_sync_ops = { |
656 | .rpc_call_prepare = nfs41_call_priv_sync_prepare, | |
657 | .rpc_call_done = nfs41_call_sync_done, | |
658 | }; | |
659 | ||
035168ab | 660 | static int nfs4_call_sync_sequence(struct nfs_server *server, |
ce5039c1 AA |
661 | struct rpc_message *msg, |
662 | struct nfs4_sequence_args *args, | |
663 | struct nfs4_sequence_res *res, | |
b257957e AB |
664 | int cache_reply, |
665 | int privileged) | |
ce5039c1 AA |
666 | { |
667 | int ret; | |
668 | struct rpc_task *task; | |
669 | struct nfs41_call_sync_data data = { | |
035168ab | 670 | .seq_server = server, |
ce5039c1 AA |
671 | .seq_args = args, |
672 | .seq_res = res, | |
673 | .cache_reply = cache_reply, | |
674 | }; | |
675 | struct rpc_task_setup task_setup = { | |
035168ab | 676 | .rpc_client = server->client, |
ce5039c1 AA |
677 | .rpc_message = msg, |
678 | .callback_ops = &nfs41_call_sync_ops, | |
679 | .callback_data = &data | |
680 | }; | |
681 | ||
dfb4f309 | 682 | res->sr_slot = NULL; |
b257957e AB |
683 | if (privileged) |
684 | task_setup.callback_ops = &nfs41_call_priv_sync_ops; | |
ce5039c1 AA |
685 | task = rpc_run_task(&task_setup); |
686 | if (IS_ERR(task)) | |
687 | ret = PTR_ERR(task); | |
688 | else { | |
689 | ret = task->tk_status; | |
690 | rpc_put_task(task); | |
691 | } | |
692 | return ret; | |
693 | } | |
694 | ||
cccef3b9 AA |
695 | int _nfs4_call_sync_session(struct nfs_server *server, |
696 | struct rpc_message *msg, | |
697 | struct nfs4_sequence_args *args, | |
698 | struct nfs4_sequence_res *res, | |
699 | int cache_reply) | |
700 | { | |
035168ab | 701 | return nfs4_call_sync_sequence(server, msg, args, res, cache_reply, 0); |
cccef3b9 AA |
702 | } |
703 | ||
df896455 | 704 | #else |
14516c3a TM |
705 | static int nfs4_sequence_done(struct rpc_task *task, |
706 | struct nfs4_sequence_res *res) | |
df896455 | 707 | { |
14516c3a | 708 | return 1; |
df896455 | 709 | } |
cccef3b9 AA |
710 | #endif /* CONFIG_NFS_V4_1 */ |
711 | ||
712 | int _nfs4_call_sync(struct nfs_server *server, | |
713 | struct rpc_message *msg, | |
714 | struct nfs4_sequence_args *args, | |
715 | struct nfs4_sequence_res *res, | |
716 | int cache_reply) | |
717 | { | |
f3752975 | 718 | args->sa_session = res->sr_session = NULL; |
cccef3b9 AA |
719 | return rpc_call_sync(server->client, msg, 0); |
720 | } | |
721 | ||
e73b83f2 BS |
722 | static inline |
723 | int nfs4_call_sync(struct nfs_server *server, | |
724 | struct rpc_message *msg, | |
725 | struct nfs4_sequence_args *args, | |
726 | struct nfs4_sequence_res *res, | |
727 | int cache_reply) | |
728 | { | |
729 | return server->nfs_client->cl_mvops->call_sync(server, msg, args, | |
730 | res, cache_reply); | |
731 | } | |
cccef3b9 | 732 | |
38478b24 | 733 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 734 | { |
38478b24 | 735 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 736 | |
38478b24 | 737 | spin_lock(&dir->i_lock); |
40d24704 TM |
738 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; |
739 | if (!cinfo->atomic || cinfo->before != nfsi->change_attr) | |
bfc69a45 | 740 | nfs_force_lookup_revalidate(dir); |
40d24704 | 741 | nfsi->change_attr = cinfo->after; |
38478b24 | 742 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
743 | } |
744 | ||
e56e0b78 | 745 | struct nfs4_opendata { |
c6d00e63 | 746 | struct kref kref; |
e56e0b78 TM |
747 | struct nfs_openargs o_arg; |
748 | struct nfs_openres o_res; | |
cdd4e68b TM |
749 | struct nfs_open_confirmargs c_arg; |
750 | struct nfs_open_confirmres c_res; | |
e56e0b78 TM |
751 | struct nfs_fattr f_attr; |
752 | struct nfs_fattr dir_attr; | |
ad389da7 | 753 | struct path path; |
e56e0b78 TM |
754 | struct dentry *dir; |
755 | struct nfs4_state_owner *owner; | |
aac00a8d | 756 | struct nfs4_state *state; |
e56e0b78 | 757 | struct iattr attrs; |
26e976a8 | 758 | unsigned long timestamp; |
3e309914 | 759 | unsigned int rpc_done : 1; |
24ac23ab TM |
760 | int rpc_status; |
761 | int cancelled; | |
e56e0b78 TM |
762 | }; |
763 | ||
2ced46c2 TM |
764 | |
765 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
766 | { | |
767 | p->o_res.f_attr = &p->f_attr; | |
768 | p->o_res.dir_attr = &p->dir_attr; | |
c1d51931 TM |
769 | p->o_res.seqid = p->o_arg.seqid; |
770 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 TM |
771 | p->o_res.server = p->o_arg.server; |
772 | nfs_fattr_init(&p->f_attr); | |
773 | nfs_fattr_init(&p->dir_attr); | |
774 | } | |
775 | ||
ad389da7 | 776 | static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path, |
dc0b027d | 777 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be TM |
778 | const struct iattr *attrs, |
779 | gfp_t gfp_mask) | |
e56e0b78 | 780 | { |
ad389da7 | 781 | struct dentry *parent = dget_parent(path->dentry); |
e56e0b78 TM |
782 | struct inode *dir = parent->d_inode; |
783 | struct nfs_server *server = NFS_SERVER(dir); | |
784 | struct nfs4_opendata *p; | |
785 | ||
8535b2be | 786 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
787 | if (p == NULL) |
788 | goto err; | |
8535b2be | 789 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
790 | if (p->o_arg.seqid == NULL) |
791 | goto err_free; | |
f6948697 AV |
792 | path_get(path); |
793 | p->path = *path; | |
e56e0b78 TM |
794 | p->dir = parent; |
795 | p->owner = sp; | |
796 | atomic_inc(&sp->so_count); | |
797 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
798 | p->o_arg.open_flags = flags; |
799 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
7539bbab | 800 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 801 | p->o_arg.id = sp->so_owner_id.id; |
ad389da7 | 802 | p->o_arg.name = &p->path.dentry->d_name; |
e56e0b78 TM |
803 | p->o_arg.server = server; |
804 | p->o_arg.bitmask = server->attr_bitmask; | |
805 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; | |
d77d76ff TM |
806 | if (flags & O_CREAT) { |
807 | u32 *s; | |
808 | ||
e56e0b78 TM |
809 | p->o_arg.u.attrs = &p->attrs; |
810 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
d77d76ff TM |
811 | s = (u32 *) p->o_arg.u.verifier.data; |
812 | s[0] = jiffies; | |
813 | s[1] = current->pid; | |
e56e0b78 | 814 | } |
cdd4e68b TM |
815 | p->c_arg.fh = &p->o_res.fh; |
816 | p->c_arg.stateid = &p->o_res.stateid; | |
817 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 818 | nfs4_init_opendata_res(p); |
c6d00e63 | 819 | kref_init(&p->kref); |
e56e0b78 TM |
820 | return p; |
821 | err_free: | |
822 | kfree(p); | |
823 | err: | |
824 | dput(parent); | |
825 | return NULL; | |
826 | } | |
827 | ||
c6d00e63 | 828 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 829 | { |
c6d00e63 TM |
830 | struct nfs4_opendata *p = container_of(kref, |
831 | struct nfs4_opendata, kref); | |
832 | ||
833 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
834 | if (p->state != NULL) |
835 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
836 | nfs4_put_state_owner(p->owner); |
837 | dput(p->dir); | |
31f31db1 | 838 | path_put(&p->path); |
c6d00e63 TM |
839 | kfree(p); |
840 | } | |
841 | ||
842 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
843 | { | |
844 | if (p != NULL) | |
845 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
846 | } |
847 | ||
06f814a3 TM |
848 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
849 | { | |
06f814a3 TM |
850 | int ret; |
851 | ||
06f814a3 | 852 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
853 | return ret; |
854 | } | |
855 | ||
dc0b027d | 856 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
857 | { |
858 | int ret = 0; | |
dc0b027d TM |
859 | |
860 | if (open_mode & O_EXCL) | |
861 | goto out; | |
862 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 863 | case FMODE_READ: |
88069f77 TM |
864 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
865 | && state->n_rdonly != 0; | |
6ee41268 TM |
866 | break; |
867 | case FMODE_WRITE: | |
88069f77 TM |
868 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
869 | && state->n_wronly != 0; | |
6ee41268 TM |
870 | break; |
871 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
872 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
873 | && state->n_rdwr != 0; | |
6ee41268 | 874 | } |
dc0b027d | 875 | out: |
6ee41268 TM |
876 | return ret; |
877 | } | |
878 | ||
dc0b027d | 879 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 880 | { |
dc0b027d | 881 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 882 | return 0; |
15c831bf | 883 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 884 | return 0; |
b7391f44 | 885 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
886 | return 1; |
887 | } | |
888 | ||
dc0b027d | 889 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 890 | { |
dc0b027d | 891 | switch (fmode) { |
e7616923 TM |
892 | case FMODE_WRITE: |
893 | state->n_wronly++; | |
894 | break; | |
895 | case FMODE_READ: | |
896 | state->n_rdonly++; | |
897 | break; | |
898 | case FMODE_READ|FMODE_WRITE: | |
899 | state->n_rdwr++; | |
900 | } | |
dc0b027d | 901 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
902 | } |
903 | ||
dc0b027d | 904 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
905 | { |
906 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
907 | memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data)); | |
908 | memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data)); | |
dc0b027d | 909 | switch (fmode) { |
003707c7 TM |
910 | case FMODE_READ: |
911 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
912 | break; | |
913 | case FMODE_WRITE: | |
914 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
915 | break; | |
916 | case FMODE_READ|FMODE_WRITE: | |
917 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
918 | } | |
e7616923 TM |
919 | } |
920 | ||
dc0b027d | 921 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 922 | { |
8bda4e4c | 923 | write_seqlock(&state->seqlock); |
dc0b027d | 924 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 925 | write_sequnlock(&state->seqlock); |
003707c7 TM |
926 | } |
927 | ||
dc0b027d | 928 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 929 | { |
8bda4e4c TM |
930 | /* |
931 | * Protect the call to nfs4_state_set_mode_locked and | |
932 | * serialise the stateid update | |
933 | */ | |
934 | write_seqlock(&state->seqlock); | |
003707c7 TM |
935 | if (deleg_stateid != NULL) { |
936 | memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data)); | |
937 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
938 | } | |
939 | if (open_stateid != NULL) | |
dc0b027d | 940 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
941 | write_sequnlock(&state->seqlock); |
942 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 943 | update_open_stateflags(state, fmode); |
ec073428 | 944 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
945 | } |
946 | ||
dc0b027d | 947 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
948 | { |
949 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
950 | struct nfs_delegation *deleg_cur; | |
951 | int ret = 0; | |
952 | ||
dc0b027d | 953 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
954 | |
955 | rcu_read_lock(); | |
956 | deleg_cur = rcu_dereference(nfsi->delegation); | |
957 | if (deleg_cur == NULL) | |
958 | goto no_delegation; | |
959 | ||
960 | spin_lock(&deleg_cur->lock); | |
961 | if (nfsi->delegation != deleg_cur || | |
dc0b027d | 962 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
963 | goto no_delegation_unlock; |
964 | ||
965 | if (delegation == NULL) | |
966 | delegation = &deleg_cur->stateid; | |
967 | else if (memcmp(deleg_cur->stateid.data, delegation->data, NFS4_STATEID_SIZE) != 0) | |
968 | goto no_delegation_unlock; | |
969 | ||
b7391f44 | 970 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 971 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
972 | ret = 1; |
973 | no_delegation_unlock: | |
974 | spin_unlock(&deleg_cur->lock); | |
975 | no_delegation: | |
976 | rcu_read_unlock(); | |
977 | ||
978 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 979 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
980 | ret = 1; |
981 | } | |
982 | ||
983 | return ret; | |
984 | } | |
985 | ||
986 | ||
dc0b027d | 987 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
988 | { |
989 | struct nfs_delegation *delegation; | |
990 | ||
991 | rcu_read_lock(); | |
992 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 993 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
994 | rcu_read_unlock(); |
995 | return; | |
996 | } | |
997 | rcu_read_unlock(); | |
998 | nfs_inode_return_delegation(inode); | |
999 | } | |
1000 | ||
6ee41268 | 1001 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1002 | { |
1003 | struct nfs4_state *state = opendata->state; | |
1004 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1005 | struct nfs_delegation *delegation; | |
dc0b027d TM |
1006 | int open_mode = opendata->o_arg.open_flags & O_EXCL; |
1007 | fmode_t fmode = opendata->o_arg.fmode; | |
aac00a8d TM |
1008 | nfs4_stateid stateid; |
1009 | int ret = -EAGAIN; | |
1010 | ||
aac00a8d | 1011 | for (;;) { |
dc0b027d | 1012 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1013 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1014 | if (can_open_cached(state, fmode, open_mode)) { |
1015 | update_open_stateflags(state, fmode); | |
6ee41268 | 1016 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1017 | goto out_return_state; |
1018 | } | |
1019 | spin_unlock(&state->owner->so_lock); | |
1020 | } | |
34310430 TM |
1021 | rcu_read_lock(); |
1022 | delegation = rcu_dereference(nfsi->delegation); | |
1023 | if (delegation == NULL || | |
dc0b027d | 1024 | !can_open_delegated(delegation, fmode)) { |
34310430 | 1025 | rcu_read_unlock(); |
aac00a8d | 1026 | break; |
34310430 | 1027 | } |
aac00a8d TM |
1028 | /* Save the delegation */ |
1029 | memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data)); | |
1030 | rcu_read_unlock(); | |
af22f94a | 1031 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
1032 | if (ret != 0) |
1033 | goto out; | |
1034 | ret = -EAGAIN; | |
34310430 TM |
1035 | |
1036 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1037 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1038 | goto out_return_state; |
aac00a8d | 1039 | } |
aac00a8d TM |
1040 | out: |
1041 | return ERR_PTR(ret); | |
1042 | out_return_state: | |
1043 | atomic_inc(&state->count); | |
1044 | return state; | |
1045 | } | |
1046 | ||
24ac23ab TM |
1047 | static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) |
1048 | { | |
1049 | struct inode *inode; | |
1050 | struct nfs4_state *state = NULL; | |
003707c7 | 1051 | struct nfs_delegation *delegation; |
1b370bc2 | 1052 | int ret; |
24ac23ab | 1053 | |
aac00a8d | 1054 | if (!data->rpc_done) { |
6ee41268 | 1055 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1056 | goto out; |
1057 | } | |
1058 | ||
1b370bc2 | 1059 | ret = -EAGAIN; |
24ac23ab | 1060 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1061 | goto err; |
24ac23ab | 1062 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 1063 | ret = PTR_ERR(inode); |
03f28e3a | 1064 | if (IS_ERR(inode)) |
1b370bc2 TM |
1065 | goto err; |
1066 | ret = -ENOMEM; | |
24ac23ab TM |
1067 | state = nfs4_get_open_state(inode, data->owner); |
1068 | if (state == NULL) | |
1b370bc2 | 1069 | goto err_put_inode; |
549d6ed5 | 1070 | if (data->o_res.delegation_type != 0) { |
549d6ed5 TM |
1071 | int delegation_flags = 0; |
1072 | ||
003707c7 TM |
1073 | rcu_read_lock(); |
1074 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
1075 | if (delegation) | |
1076 | delegation_flags = delegation->flags; | |
1077 | rcu_read_unlock(); | |
15c831bf | 1078 | if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) |
549d6ed5 TM |
1079 | nfs_inode_set_delegation(state->inode, |
1080 | data->owner->so_cred, | |
1081 | &data->o_res); | |
1082 | else | |
1083 | nfs_inode_reclaim_delegation(state->inode, | |
1084 | data->owner->so_cred, | |
1085 | &data->o_res); | |
1086 | } | |
34310430 TM |
1087 | |
1088 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
dc0b027d | 1089 | data->o_arg.fmode); |
24ac23ab | 1090 | iput(inode); |
aac00a8d | 1091 | out: |
24ac23ab | 1092 | return state; |
1b370bc2 TM |
1093 | err_put_inode: |
1094 | iput(inode); | |
1095 | err: | |
1096 | return ERR_PTR(ret); | |
24ac23ab TM |
1097 | } |
1098 | ||
864472e9 TM |
1099 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1100 | { | |
1101 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1102 | struct nfs_open_context *ctx; | |
1103 | ||
1104 | spin_lock(&state->inode->i_lock); | |
1105 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1106 | if (ctx->state != state) | |
1107 | continue; | |
1108 | get_nfs_open_context(ctx); | |
1109 | spin_unlock(&state->inode->i_lock); | |
1110 | return ctx; | |
1111 | } | |
1112 | spin_unlock(&state->inode->i_lock); | |
1113 | return ERR_PTR(-ENOENT); | |
1114 | } | |
1115 | ||
6f220ed5 TM |
1116 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
1117 | { | |
1118 | struct nfs4_opendata *opendata; | |
1119 | ||
8535b2be | 1120 | opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL, GFP_NOFS); |
6f220ed5 TM |
1121 | if (opendata == NULL) |
1122 | return ERR_PTR(-ENOMEM); | |
1123 | opendata->state = state; | |
1124 | atomic_inc(&state->count); | |
1125 | return opendata; | |
1126 | } | |
1127 | ||
dc0b027d | 1128 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1129 | { |
2ced46c2 | 1130 | struct nfs4_state *newstate; |
864472e9 TM |
1131 | int ret; |
1132 | ||
dc0b027d TM |
1133 | opendata->o_arg.open_flags = 0; |
1134 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1135 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1136 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1137 | nfs4_init_opendata_res(opendata); | |
b257957e | 1138 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1139 | if (ret != 0) |
1140 | return ret; | |
2ced46c2 | 1141 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1142 | if (IS_ERR(newstate)) |
1143 | return PTR_ERR(newstate); | |
dc0b027d | 1144 | nfs4_close_state(&opendata->path, newstate, fmode); |
2ced46c2 | 1145 | *res = newstate; |
864472e9 TM |
1146 | return 0; |
1147 | } | |
1148 | ||
1149 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1150 | { | |
864472e9 | 1151 | struct nfs4_state *newstate; |
864472e9 TM |
1152 | int ret; |
1153 | ||
1154 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1155 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1156 | smp_rmb(); |
1157 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1158 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1159 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1160 | if (ret != 0) |
1161 | return ret; | |
2ced46c2 TM |
1162 | if (newstate != state) |
1163 | return -ESTALE; | |
864472e9 TM |
1164 | } |
1165 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1166 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1167 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1168 | if (ret != 0) |
1169 | return ret; | |
2ced46c2 TM |
1170 | if (newstate != state) |
1171 | return -ESTALE; | |
864472e9 TM |
1172 | } |
1173 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1174 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1175 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1176 | if (ret != 0) |
1177 | return ret; | |
2ced46c2 TM |
1178 | if (newstate != state) |
1179 | return -ESTALE; | |
864472e9 | 1180 | } |
1ac7e2fd TM |
1181 | /* |
1182 | * We may have performed cached opens for all three recoveries. | |
1183 | * Check if we need to update the current stateid. | |
1184 | */ | |
1185 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
1186 | memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) { | |
8bda4e4c | 1187 | write_seqlock(&state->seqlock); |
1ac7e2fd TM |
1188 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
1189 | memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)); | |
8bda4e4c | 1190 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1191 | } |
864472e9 TM |
1192 | return 0; |
1193 | } | |
1194 | ||
1da177e4 LT |
1195 | /* |
1196 | * OPEN_RECLAIM: | |
1197 | * reclaim state on the server after a reboot. | |
1da177e4 | 1198 | */ |
539cd03a | 1199 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1200 | { |
1ac7e2fd | 1201 | struct nfs_delegation *delegation; |
864472e9 | 1202 | struct nfs4_opendata *opendata; |
dc0b027d | 1203 | fmode_t delegation_type = 0; |
1da177e4 LT |
1204 | int status; |
1205 | ||
6f220ed5 TM |
1206 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1207 | if (IS_ERR(opendata)) | |
1208 | return PTR_ERR(opendata); | |
864472e9 TM |
1209 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1210 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1211 | rcu_read_lock(); |
1212 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1213 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1214 | delegation_type = delegation->type; |
1ac7e2fd | 1215 | rcu_read_unlock(); |
864472e9 TM |
1216 | opendata->o_arg.u.delegation_type = delegation_type; |
1217 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1218 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1219 | return status; |
1220 | } | |
1221 | ||
539cd03a | 1222 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1223 | { |
1224 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1225 | struct nfs4_exception exception = { }; | |
1226 | int err; | |
1227 | do { | |
539cd03a | 1228 | err = _nfs4_do_open_reclaim(ctx, state); |
168667c4 | 1229 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1230 | break; |
1231 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1232 | } while (exception.retry); |
1233 | return err; | |
1234 | } | |
1235 | ||
864472e9 TM |
1236 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1237 | { | |
1238 | struct nfs_open_context *ctx; | |
1239 | int ret; | |
1240 | ||
1241 | ctx = nfs4_state_find_open_context(state); | |
1242 | if (IS_ERR(ctx)) | |
1243 | return PTR_ERR(ctx); | |
539cd03a | 1244 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1245 | put_nfs_open_context(ctx); |
1246 | return ret; | |
1247 | } | |
1248 | ||
13437e12 | 1249 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1250 | { |
e56e0b78 | 1251 | struct nfs4_opendata *opendata; |
864472e9 | 1252 | int ret; |
1da177e4 | 1253 | |
6f220ed5 TM |
1254 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1255 | if (IS_ERR(opendata)) | |
1256 | return PTR_ERR(opendata); | |
e56e0b78 | 1257 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
13437e12 | 1258 | memcpy(opendata->o_arg.u.delegation.data, stateid->data, |
e56e0b78 | 1259 | sizeof(opendata->o_arg.u.delegation.data)); |
864472e9 | 1260 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1261 | nfs4_opendata_put(opendata); |
864472e9 | 1262 | return ret; |
1da177e4 LT |
1263 | } |
1264 | ||
13437e12 | 1265 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1266 | { |
1267 | struct nfs4_exception exception = { }; | |
539cd03a | 1268 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1269 | int err; |
1270 | do { | |
13437e12 | 1271 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1272 | switch (err) { |
1273 | case 0: | |
965b5d67 TM |
1274 | case -ENOENT: |
1275 | case -ESTALE: | |
1276 | goto out; | |
bcfa49f6 RL |
1277 | case -NFS4ERR_BADSESSION: |
1278 | case -NFS4ERR_BADSLOT: | |
1279 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1280 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1281 | case -NFS4ERR_DEADSESSION: | |
0400a6b0 | 1282 | nfs4_schedule_session_recovery(server->nfs_client->cl_session); |
bcfa49f6 | 1283 | goto out; |
1da177e4 LT |
1284 | case -NFS4ERR_STALE_CLIENTID: |
1285 | case -NFS4ERR_STALE_STATEID: | |
1286 | case -NFS4ERR_EXPIRED: | |
1287 | /* Don't recall a delegation if it was lost */ | |
0400a6b0 | 1288 | nfs4_schedule_lease_recovery(server->nfs_client); |
965b5d67 TM |
1289 | goto out; |
1290 | case -ERESTARTSYS: | |
1291 | /* | |
1292 | * The show must go on: exit, but mark the | |
1293 | * stateid as needing recovery. | |
1294 | */ | |
1295 | case -NFS4ERR_ADMIN_REVOKED: | |
1296 | case -NFS4ERR_BAD_STATEID: | |
0400a6b0 | 1297 | nfs4_schedule_stateid_recovery(server, state); |
168667c4 TM |
1298 | case -EKEYEXPIRED: |
1299 | /* | |
1300 | * User RPCSEC_GSS context has expired. | |
1301 | * We cannot recover this stateid now, so | |
1302 | * skip it and allow recovery thread to | |
1303 | * proceed. | |
1304 | */ | |
965b5d67 TM |
1305 | case -ENOMEM: |
1306 | err = 0; | |
1307 | goto out; | |
1da177e4 LT |
1308 | } |
1309 | err = nfs4_handle_exception(server, err, &exception); | |
1310 | } while (exception.retry); | |
965b5d67 | 1311 | out: |
1da177e4 LT |
1312 | return err; |
1313 | } | |
1314 | ||
cdd4e68b TM |
1315 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1316 | { | |
1317 | struct nfs4_opendata *data = calldata; | |
1318 | ||
1319 | data->rpc_status = task->tk_status; | |
26e976a8 | 1320 | if (data->rpc_status == 0) { |
cdd4e68b TM |
1321 | memcpy(data->o_res.stateid.data, data->c_res.stateid.data, |
1322 | sizeof(data->o_res.stateid.data)); | |
bb22629e | 1323 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1324 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1325 | data->rpc_done = 1; |
26e976a8 | 1326 | } |
cdd4e68b TM |
1327 | } |
1328 | ||
1329 | static void nfs4_open_confirm_release(void *calldata) | |
1330 | { | |
1331 | struct nfs4_opendata *data = calldata; | |
1332 | struct nfs4_state *state = NULL; | |
1333 | ||
1334 | /* If this request hasn't been cancelled, do nothing */ | |
1335 | if (data->cancelled == 0) | |
1336 | goto out_free; | |
1337 | /* In case of error, no cleanup! */ | |
3e309914 | 1338 | if (!data->rpc_done) |
cdd4e68b | 1339 | goto out_free; |
cdd4e68b | 1340 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1341 | if (!IS_ERR(state)) |
dc0b027d | 1342 | nfs4_close_state(&data->path, state, data->o_arg.fmode); |
cdd4e68b | 1343 | out_free: |
c6d00e63 | 1344 | nfs4_opendata_put(data); |
cdd4e68b TM |
1345 | } |
1346 | ||
1347 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1348 | .rpc_call_done = nfs4_open_confirm_done, |
1349 | .rpc_release = nfs4_open_confirm_release, | |
1350 | }; | |
1351 | ||
1352 | /* | |
1353 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1354 | */ | |
1355 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1356 | { | |
1357 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1358 | struct rpc_task *task; | |
5138fde0 TM |
1359 | struct rpc_message msg = { |
1360 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1361 | .rpc_argp = &data->c_arg, | |
1362 | .rpc_resp = &data->c_res, | |
1363 | .rpc_cred = data->owner->so_cred, | |
1364 | }; | |
c970aa85 TM |
1365 | struct rpc_task_setup task_setup_data = { |
1366 | .rpc_client = server->client, | |
5138fde0 | 1367 | .rpc_message = &msg, |
c970aa85 TM |
1368 | .callback_ops = &nfs4_open_confirm_ops, |
1369 | .callback_data = data, | |
101070ca | 1370 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1371 | .flags = RPC_TASK_ASYNC, |
1372 | }; | |
1da177e4 LT |
1373 | int status; |
1374 | ||
c6d00e63 | 1375 | kref_get(&data->kref); |
3e309914 TM |
1376 | data->rpc_done = 0; |
1377 | data->rpc_status = 0; | |
5138fde0 | 1378 | data->timestamp = jiffies; |
c970aa85 | 1379 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1380 | if (IS_ERR(task)) |
cdd4e68b | 1381 | return PTR_ERR(task); |
cdd4e68b TM |
1382 | status = nfs4_wait_for_completion_rpc_task(task); |
1383 | if (status != 0) { | |
1384 | data->cancelled = 1; | |
1385 | smp_wmb(); | |
1386 | } else | |
1387 | status = data->rpc_status; | |
e6b3c4db | 1388 | rpc_put_task(task); |
1da177e4 LT |
1389 | return status; |
1390 | } | |
1391 | ||
24ac23ab | 1392 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1393 | { |
24ac23ab TM |
1394 | struct nfs4_opendata *data = calldata; |
1395 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1396 | |
24ac23ab TM |
1397 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
1398 | return; | |
aac00a8d TM |
1399 | /* |
1400 | * Check if we still need to send an OPEN call, or if we can use | |
1401 | * a delegation instead. | |
1402 | */ | |
1403 | if (data->state != NULL) { | |
1404 | struct nfs_delegation *delegation; | |
1405 | ||
dc0b027d | 1406 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1407 | goto out_no_action; |
aac00a8d TM |
1408 | rcu_read_lock(); |
1409 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
1410 | if (delegation != NULL && | |
15c831bf | 1411 | test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) == 0) { |
aac00a8d | 1412 | rcu_read_unlock(); |
6ee41268 | 1413 | goto out_no_action; |
aac00a8d TM |
1414 | } |
1415 | rcu_read_unlock(); | |
1416 | } | |
24ac23ab | 1417 | /* Update sequence id. */ |
9f958ab8 | 1418 | data->o_arg.id = sp->so_owner_id.id; |
1f0e890d | 1419 | data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; |
6f220ed5 | 1420 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1421 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
6f220ed5 TM |
1422 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1423 | } | |
26e976a8 | 1424 | data->timestamp = jiffies; |
035168ab | 1425 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c AA |
1426 | &data->o_arg.seq_args, |
1427 | &data->o_res.seq_res, 1, task)) | |
1428 | return; | |
5138fde0 | 1429 | rpc_call_start(task); |
6ee41268 TM |
1430 | return; |
1431 | out_no_action: | |
1432 | task->tk_action = NULL; | |
1433 | ||
24ac23ab | 1434 | } |
1da177e4 | 1435 | |
b257957e AB |
1436 | static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata) |
1437 | { | |
1438 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
1439 | nfs4_open_prepare(task, calldata); | |
1440 | } | |
1441 | ||
24ac23ab TM |
1442 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1443 | { | |
1444 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1445 | |
24ac23ab | 1446 | data->rpc_status = task->tk_status; |
d898528c | 1447 | |
14516c3a TM |
1448 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1449 | return; | |
d898528c | 1450 | |
24ac23ab TM |
1451 | if (task->tk_status == 0) { |
1452 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1453 | case S_IFREG: |
1454 | break; | |
1455 | case S_IFLNK: | |
24ac23ab | 1456 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1457 | break; |
1458 | case S_IFDIR: | |
24ac23ab | 1459 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1460 | break; |
1461 | default: | |
24ac23ab | 1462 | data->rpc_status = -ENOTDIR; |
6f926b5b | 1463 | } |
26e976a8 | 1464 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1465 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1466 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1467 | } |
3e309914 | 1468 | data->rpc_done = 1; |
24ac23ab | 1469 | } |
6f926b5b | 1470 | |
24ac23ab TM |
1471 | static void nfs4_open_release(void *calldata) |
1472 | { | |
1473 | struct nfs4_opendata *data = calldata; | |
1474 | struct nfs4_state *state = NULL; | |
1475 | ||
1476 | /* If this request hasn't been cancelled, do nothing */ | |
1477 | if (data->cancelled == 0) | |
1478 | goto out_free; | |
1479 | /* In case of error, no cleanup! */ | |
3e309914 | 1480 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1481 | goto out_free; |
1482 | /* In case we need an open_confirm, no cleanup! */ | |
1483 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1484 | goto out_free; | |
24ac23ab | 1485 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1486 | if (!IS_ERR(state)) |
dc0b027d | 1487 | nfs4_close_state(&data->path, state, data->o_arg.fmode); |
24ac23ab | 1488 | out_free: |
c6d00e63 | 1489 | nfs4_opendata_put(data); |
24ac23ab TM |
1490 | } |
1491 | ||
1492 | static const struct rpc_call_ops nfs4_open_ops = { | |
1493 | .rpc_call_prepare = nfs4_open_prepare, | |
1494 | .rpc_call_done = nfs4_open_done, | |
1495 | .rpc_release = nfs4_open_release, | |
1496 | }; | |
1497 | ||
b257957e AB |
1498 | static const struct rpc_call_ops nfs4_recover_open_ops = { |
1499 | .rpc_call_prepare = nfs4_recover_open_prepare, | |
1500 | .rpc_call_done = nfs4_open_done, | |
1501 | .rpc_release = nfs4_open_release, | |
1502 | }; | |
1503 | ||
1504 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) | |
24ac23ab TM |
1505 | { |
1506 | struct inode *dir = data->dir->d_inode; | |
1507 | struct nfs_server *server = NFS_SERVER(dir); | |
1508 | struct nfs_openargs *o_arg = &data->o_arg; | |
1509 | struct nfs_openres *o_res = &data->o_res; | |
1510 | struct rpc_task *task; | |
5138fde0 TM |
1511 | struct rpc_message msg = { |
1512 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1513 | .rpc_argp = o_arg, | |
1514 | .rpc_resp = o_res, | |
1515 | .rpc_cred = data->owner->so_cred, | |
1516 | }; | |
c970aa85 TM |
1517 | struct rpc_task_setup task_setup_data = { |
1518 | .rpc_client = server->client, | |
5138fde0 | 1519 | .rpc_message = &msg, |
c970aa85 TM |
1520 | .callback_ops = &nfs4_open_ops, |
1521 | .callback_data = data, | |
101070ca | 1522 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1523 | .flags = RPC_TASK_ASYNC, |
1524 | }; | |
24ac23ab TM |
1525 | int status; |
1526 | ||
c6d00e63 | 1527 | kref_get(&data->kref); |
3e309914 TM |
1528 | data->rpc_done = 0; |
1529 | data->rpc_status = 0; | |
2ced46c2 | 1530 | data->cancelled = 0; |
b257957e AB |
1531 | if (isrecover) |
1532 | task_setup_data.callback_ops = &nfs4_recover_open_ops; | |
c970aa85 | 1533 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1534 | if (IS_ERR(task)) |
1535 | return PTR_ERR(task); | |
1536 | status = nfs4_wait_for_completion_rpc_task(task); | |
1537 | if (status != 0) { | |
1538 | data->cancelled = 1; | |
1539 | smp_wmb(); | |
1540 | } else | |
1541 | status = data->rpc_status; | |
1542 | rpc_put_task(task); | |
1543 | ||
1544 | return status; | |
1545 | } | |
1546 | ||
1547 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1548 | { | |
1549 | struct inode *dir = data->dir->d_inode; | |
1550 | struct nfs_openres *o_res = &data->o_res; | |
1551 | int status; | |
1552 | ||
1553 | status = nfs4_run_open_task(data, 1); | |
1554 | if (status != 0 || !data->rpc_done) | |
1555 | return status; | |
1556 | ||
1557 | nfs_refresh_inode(dir, o_res->dir_attr); | |
1558 | ||
1559 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { | |
1560 | status = _nfs4_proc_open_confirm(data); | |
1561 | if (status != 0) | |
1562 | return status; | |
1563 | } | |
1564 | ||
1565 | return status; | |
1566 | } | |
1567 | ||
1568 | /* | |
1569 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1570 | */ | |
1571 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1572 | { | |
1573 | struct inode *dir = data->dir->d_inode; | |
1574 | struct nfs_server *server = NFS_SERVER(dir); | |
1575 | struct nfs_openargs *o_arg = &data->o_arg; | |
1576 | struct nfs_openres *o_res = &data->o_res; | |
1577 | int status; | |
1578 | ||
1579 | status = nfs4_run_open_task(data, 0); | |
3e309914 | 1580 | if (status != 0 || !data->rpc_done) |
24ac23ab TM |
1581 | return status; |
1582 | ||
56ae19f3 TM |
1583 | if (o_arg->open_flags & O_CREAT) { |
1584 | update_changeattr(dir, &o_res->cinfo); | |
1585 | nfs_post_op_update_inode(dir, o_res->dir_attr); | |
1586 | } else | |
1587 | nfs_refresh_inode(dir, o_res->dir_attr); | |
0df5dd4a TM |
1588 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1589 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1590 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1591 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1592 | if (status != 0) |
24ac23ab | 1593 | return status; |
1da177e4 LT |
1594 | } |
1595 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1596 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1597 | return 0; |
1da177e4 LT |
1598 | } |
1599 | ||
d83217c1 | 1600 | static int nfs4_client_recover_expired_lease(struct nfs_client *clp) |
58d9714a | 1601 | { |
a78cb57a | 1602 | unsigned int loop; |
6b30954e | 1603 | int ret; |
58d9714a | 1604 | |
a78cb57a | 1605 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { |
65de872e | 1606 | ret = nfs4_wait_clnt_recover(clp); |
6b30954e | 1607 | if (ret != 0) |
a78cb57a | 1608 | break; |
e598d843 TM |
1609 | if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) && |
1610 | !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state)) | |
6b30954e | 1611 | break; |
0400a6b0 | 1612 | nfs4_schedule_state_manager(clp); |
a78cb57a | 1613 | ret = -EIO; |
6b30954e | 1614 | } |
a78cb57a | 1615 | return ret; |
58d9714a TM |
1616 | } |
1617 | ||
d83217c1 AA |
1618 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1619 | { | |
1620 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1621 | } | |
1622 | ||
1da177e4 LT |
1623 | /* |
1624 | * OPEN_EXPIRED: | |
1625 | * reclaim state on the server after a network partition. | |
1626 | * Assumes caller holds the appropriate lock | |
1627 | */ | |
539cd03a | 1628 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1629 | { |
e56e0b78 | 1630 | struct nfs4_opendata *opendata; |
864472e9 | 1631 | int ret; |
1da177e4 | 1632 | |
6f220ed5 TM |
1633 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1634 | if (IS_ERR(opendata)) | |
1635 | return PTR_ERR(opendata); | |
864472e9 | 1636 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1637 | if (ret == -ESTALE) |
539cd03a | 1638 | d_drop(ctx->path.dentry); |
c6d00e63 | 1639 | nfs4_opendata_put(opendata); |
864472e9 | 1640 | return ret; |
1da177e4 LT |
1641 | } |
1642 | ||
a9ed2e25 | 1643 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1644 | { |
539cd03a | 1645 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1646 | struct nfs4_exception exception = { }; |
1647 | int err; | |
1648 | ||
1649 | do { | |
539cd03a | 1650 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1651 | switch (err) { |
1652 | default: | |
1653 | goto out; | |
1654 | case -NFS4ERR_GRACE: | |
1655 | case -NFS4ERR_DELAY: | |
1656 | nfs4_handle_exception(server, err, &exception); | |
1657 | err = 0; | |
1658 | } | |
202b50dc | 1659 | } while (exception.retry); |
a9ed2e25 | 1660 | out: |
202b50dc TM |
1661 | return err; |
1662 | } | |
1663 | ||
1da177e4 LT |
1664 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1665 | { | |
1da177e4 | 1666 | struct nfs_open_context *ctx; |
864472e9 | 1667 | int ret; |
1da177e4 | 1668 | |
864472e9 TM |
1669 | ctx = nfs4_state_find_open_context(state); |
1670 | if (IS_ERR(ctx)) | |
1671 | return PTR_ERR(ctx); | |
539cd03a | 1672 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1673 | put_nfs_open_context(ctx); |
1674 | return ret; | |
1da177e4 LT |
1675 | } |
1676 | ||
aa53ed54 JL |
1677 | /* |
1678 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1679 | * fields corresponding to attributes that were used to store the verifier. | |
1680 | * Make sure we clobber those fields in the later setattr call | |
1681 | */ | |
1682 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1683 | { | |
1684 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1685 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1686 | sattr->ia_valid |= ATTR_ATIME; | |
1687 | ||
1688 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1689 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1690 | sattr->ia_valid |= ATTR_MTIME; | |
1691 | } | |
1692 | ||
1da177e4 | 1693 | /* |
24ac23ab | 1694 | * Returns a referenced nfs4_state |
1da177e4 | 1695 | */ |
dc0b027d | 1696 | 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 |
1697 | { |
1698 | struct nfs4_state_owner *sp; | |
1699 | struct nfs4_state *state = NULL; | |
1700 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1701 | struct nfs4_opendata *opendata; |
aac00a8d | 1702 | int status; |
1da177e4 LT |
1703 | |
1704 | /* Protect against reboot recovery conflicts */ | |
1da177e4 LT |
1705 | status = -ENOMEM; |
1706 | if (!(sp = nfs4_get_state_owner(server, cred))) { | |
1707 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); | |
1708 | goto out_err; | |
1709 | } | |
58d9714a TM |
1710 | status = nfs4_recover_expired_lease(server); |
1711 | if (status != 0) | |
b4454fe1 | 1712 | goto err_put_state_owner; |
aac00a8d | 1713 | if (path->dentry->d_inode != NULL) |
dc0b027d | 1714 | nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode); |
58d9714a | 1715 | status = -ENOMEM; |
8535b2be | 1716 | opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr, GFP_KERNEL); |
e56e0b78 | 1717 | if (opendata == NULL) |
95d35cb4 | 1718 | goto err_put_state_owner; |
1da177e4 | 1719 | |
aac00a8d TM |
1720 | if (path->dentry->d_inode != NULL) |
1721 | opendata->state = nfs4_get_open_state(path->dentry->d_inode, sp); | |
1722 | ||
24ac23ab | 1723 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1724 | if (status != 0) |
c6d00e63 | 1725 | goto err_opendata_put; |
1da177e4 | 1726 | |
24ac23ab | 1727 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1728 | status = PTR_ERR(state); |
1729 | if (IS_ERR(state)) | |
c6d00e63 | 1730 | goto err_opendata_put; |
0df5dd4a | 1731 | if (server->caps & NFS_CAP_POSIX_LOCK) |
8e469ebd | 1732 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); |
0ab64e0e TM |
1733 | |
1734 | if (opendata->o_arg.open_flags & O_EXCL) { | |
1735 | nfs4_exclusive_attrset(opendata, sattr); | |
1736 | ||
1737 | nfs_fattr_init(opendata->o_res.f_attr); | |
1738 | status = nfs4_do_setattr(state->inode, cred, | |
1739 | opendata->o_res.f_attr, sattr, | |
1740 | state); | |
1741 | if (status == 0) | |
1742 | nfs_setattr_update_inode(state->inode, sattr); | |
1743 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
1744 | } | |
c6d00e63 | 1745 | nfs4_opendata_put(opendata); |
1da177e4 | 1746 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1747 | *res = state; |
1748 | return 0; | |
c6d00e63 TM |
1749 | err_opendata_put: |
1750 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
1751 | err_put_state_owner: |
1752 | nfs4_put_state_owner(sp); | |
1da177e4 | 1753 | out_err: |
1da177e4 LT |
1754 | *res = NULL; |
1755 | return status; | |
1756 | } | |
1757 | ||
1758 | ||
dc0b027d | 1759 | 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 |
1760 | { |
1761 | struct nfs4_exception exception = { }; | |
1762 | struct nfs4_state *res; | |
1763 | int status; | |
1764 | ||
1765 | do { | |
dc0b027d | 1766 | status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res); |
1da177e4 LT |
1767 | if (status == 0) |
1768 | break; | |
1769 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1770 | * book-keeping w.r.t. state-changing operations | |
1771 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1772 | * It is actually a sign of a bug on the client or on the server. | |
1773 | * | |
1774 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1775 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1776 | * have unhashed the old state_owner for us, and that we can |
1777 | * therefore safely retry using a new one. We should still warn | |
1778 | * the user though... | |
1779 | */ | |
1780 | if (status == -NFS4ERR_BAD_SEQID) { | |
6f43ddcc TM |
1781 | printk(KERN_WARNING "NFS: v4 server %s " |
1782 | " returned a bad sequence-id error!\n", | |
1783 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1784 | exception.retry = 1; |
1785 | continue; | |
1786 | } | |
550f5747 TM |
1787 | /* |
1788 | * BAD_STATEID on OPEN means that the server cancelled our | |
1789 | * state before it received the OPEN_CONFIRM. | |
1790 | * Recover by retrying the request as per the discussion | |
1791 | * on Page 181 of RFC3530. | |
1792 | */ | |
1793 | if (status == -NFS4ERR_BAD_STATEID) { | |
1794 | exception.retry = 1; | |
1795 | continue; | |
1796 | } | |
aac00a8d TM |
1797 | if (status == -EAGAIN) { |
1798 | /* We must have found a delegation */ | |
1799 | exception.retry = 1; | |
1800 | continue; | |
1801 | } | |
1da177e4 LT |
1802 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1803 | status, &exception)); | |
1804 | } while (exception.retry); | |
1805 | return res; | |
1806 | } | |
1807 | ||
659bfcd6 TM |
1808 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1809 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1810 | struct nfs4_state *state) | |
1da177e4 | 1811 | { |
3e4f6290 | 1812 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1813 | struct nfs_setattrargs arg = { |
3e4f6290 | 1814 | .fh = NFS_FH(inode), |
1da177e4 LT |
1815 | .iap = sattr, |
1816 | .server = server, | |
1817 | .bitmask = server->attr_bitmask, | |
1818 | }; | |
1819 | struct nfs_setattrres res = { | |
1820 | .fattr = fattr, | |
1821 | .server = server, | |
1822 | }; | |
1823 | struct rpc_message msg = { | |
659bfcd6 TM |
1824 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
1825 | .rpc_argp = &arg, | |
1826 | .rpc_resp = &res, | |
1827 | .rpc_cred = cred, | |
1da177e4 | 1828 | }; |
26e976a8 | 1829 | unsigned long timestamp = jiffies; |
65e4308d | 1830 | int status; |
1da177e4 | 1831 | |
0e574af1 | 1832 | nfs_fattr_init(fattr); |
1da177e4 | 1833 | |
3e4f6290 TM |
1834 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) { |
1835 | /* Use that stateid */ | |
1836 | } else if (state != NULL) { | |
77041ed9 | 1837 | nfs4_copy_stateid(&arg.stateid, state, current->files, current->tgid); |
08e9eac4 | 1838 | } else |
1da177e4 LT |
1839 | memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid)); |
1840 | ||
e73b83f2 | 1841 | status = nfs4_call_sync(server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
1842 | if (status == 0 && state != NULL) |
1843 | renew_lease(server, timestamp); | |
65e4308d | 1844 | return status; |
1da177e4 LT |
1845 | } |
1846 | ||
659bfcd6 TM |
1847 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1848 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1849 | struct nfs4_state *state) | |
1da177e4 | 1850 | { |
3e4f6290 | 1851 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
1852 | struct nfs4_exception exception = { }; |
1853 | int err; | |
1854 | do { | |
1855 | err = nfs4_handle_exception(server, | |
659bfcd6 | 1856 | _nfs4_do_setattr(inode, cred, fattr, sattr, state), |
1da177e4 LT |
1857 | &exception); |
1858 | } while (exception.retry); | |
1859 | return err; | |
1860 | } | |
1861 | ||
1862 | struct nfs4_closedata { | |
4a35bd41 | 1863 | struct path path; |
1da177e4 LT |
1864 | struct inode *inode; |
1865 | struct nfs4_state *state; | |
1866 | struct nfs_closeargs arg; | |
1867 | struct nfs_closeres res; | |
516a6af6 | 1868 | struct nfs_fattr fattr; |
26e976a8 | 1869 | unsigned long timestamp; |
f7e8917a FI |
1870 | bool roc; |
1871 | u32 roc_barrier; | |
1da177e4 LT |
1872 | }; |
1873 | ||
963d8fe5 | 1874 | static void nfs4_free_closedata(void *data) |
9512135d | 1875 | { |
963d8fe5 TM |
1876 | struct nfs4_closedata *calldata = data; |
1877 | struct nfs4_state_owner *sp = calldata->state->owner; | |
9512135d | 1878 | |
f7e8917a FI |
1879 | if (calldata->roc) |
1880 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
1881 | nfs4_put_open_state(calldata->state); |
1882 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 1883 | nfs4_put_state_owner(sp); |
31f31db1 | 1884 | path_put(&calldata->path); |
9512135d TM |
1885 | kfree(calldata); |
1886 | } | |
1887 | ||
88069f77 TM |
1888 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
1889 | fmode_t fmode) | |
1890 | { | |
1891 | spin_lock(&state->owner->so_lock); | |
1892 | if (!(fmode & FMODE_READ)) | |
1893 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1894 | if (!(fmode & FMODE_WRITE)) | |
1895 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1896 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1897 | spin_unlock(&state->owner->so_lock); | |
1898 | } | |
1899 | ||
963d8fe5 | 1900 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 1901 | { |
963d8fe5 | 1902 | struct nfs4_closedata *calldata = data; |
1da177e4 | 1903 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
1904 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
1905 | ||
14516c3a TM |
1906 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
1907 | return; | |
1da177e4 LT |
1908 | /* hmm. we are done with the inode, and in the process of freeing |
1909 | * the state_owner. we keep this around to process errors | |
1910 | */ | |
1da177e4 LT |
1911 | switch (task->tk_status) { |
1912 | case 0: | |
f7e8917a FI |
1913 | if (calldata->roc) |
1914 | pnfs_roc_set_barrier(state->inode, | |
1915 | calldata->roc_barrier); | |
45328c35 | 1916 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 1917 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
1918 | nfs4_close_clear_stateid_flags(state, |
1919 | calldata->arg.fmode); | |
1da177e4 LT |
1920 | break; |
1921 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
1922 | case -NFS4ERR_OLD_STATEID: |
1923 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 1924 | case -NFS4ERR_EXPIRED: |
dc0b027d | 1925 | if (calldata->arg.fmode == 0) |
9e33bed5 | 1926 | break; |
1da177e4 | 1927 | default: |
72211dbe TM |
1928 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
1929 | rpc_restart_call_prepare(task); | |
1da177e4 | 1930 | } |
72211dbe | 1931 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 1932 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
1da177e4 LT |
1933 | } |
1934 | ||
4ce70ada | 1935 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 1936 | { |
4ce70ada | 1937 | struct nfs4_closedata *calldata = data; |
9512135d | 1938 | struct nfs4_state *state = calldata->state; |
88069f77 | 1939 | int call_close = 0; |
9512135d | 1940 | |
963d8fe5 | 1941 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 1942 | return; |
003707c7 | 1943 | |
88069f77 TM |
1944 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
1945 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 1946 | spin_lock(&state->owner->so_lock); |
003707c7 | 1947 | /* Calculate the change in open mode */ |
e7616923 | 1948 | if (state->n_rdwr == 0) { |
003707c7 | 1949 | if (state->n_rdonly == 0) { |
88069f77 TM |
1950 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
1951 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
1952 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
1953 | } |
1954 | if (state->n_wronly == 0) { | |
88069f77 TM |
1955 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
1956 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
1957 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 1958 | } |
e7616923 | 1959 | } |
4cecb76f | 1960 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
1961 | |
1962 | if (!call_close) { | |
963d8fe5 TM |
1963 | /* Note: exit _without_ calling nfs4_close_done */ |
1964 | task->tk_action = NULL; | |
9512135d TM |
1965 | return; |
1966 | } | |
88069f77 | 1967 | |
f7e8917a | 1968 | if (calldata->arg.fmode == 0) { |
88069f77 | 1969 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a FI |
1970 | if (calldata->roc && |
1971 | pnfs_roc_drain(calldata->inode, &calldata->roc_barrier)) { | |
1972 | rpc_sleep_on(&NFS_SERVER(calldata->inode)->roc_rpcwaitq, | |
1973 | task, NULL); | |
1974 | return; | |
1975 | } | |
1976 | } | |
88069f77 | 1977 | |
516a6af6 | 1978 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 1979 | calldata->timestamp = jiffies; |
035168ab | 1980 | if (nfs4_setup_sequence(NFS_SERVER(calldata->inode), |
19ddab06 AA |
1981 | &calldata->arg.seq_args, &calldata->res.seq_res, |
1982 | 1, task)) | |
1983 | return; | |
5138fde0 | 1984 | rpc_call_start(task); |
1da177e4 LT |
1985 | } |
1986 | ||
963d8fe5 | 1987 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 1988 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
1989 | .rpc_call_done = nfs4_close_done, |
1990 | .rpc_release = nfs4_free_closedata, | |
1991 | }; | |
1992 | ||
1da177e4 LT |
1993 | /* |
1994 | * It is possible for data to be read/written from a mem-mapped file | |
1995 | * after the sys_close call (which hits the vfs layer as a flush). | |
1996 | * This means that we can't safely call nfsv4 close on a file until | |
1997 | * the inode is cleared. This in turn means that we are not good | |
1998 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
1999 | * share state even when we are done with one of the three share | |
2000 | * stateid's in the inode. | |
2001 | * | |
2002 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2003 | */ | |
f7e8917a | 2004 | int nfs4_do_close(struct path *path, struct nfs4_state *state, gfp_t gfp_mask, int wait, bool roc) |
1da177e4 | 2005 | { |
4a35bd41 | 2006 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2007 | struct nfs4_closedata *calldata; |
b39e625b TM |
2008 | struct nfs4_state_owner *sp = state->owner; |
2009 | struct rpc_task *task; | |
5138fde0 TM |
2010 | struct rpc_message msg = { |
2011 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2012 | .rpc_cred = state->owner->so_cred, | |
2013 | }; | |
c970aa85 TM |
2014 | struct rpc_task_setup task_setup_data = { |
2015 | .rpc_client = server->client, | |
5138fde0 | 2016 | .rpc_message = &msg, |
c970aa85 | 2017 | .callback_ops = &nfs4_close_ops, |
101070ca | 2018 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2019 | .flags = RPC_TASK_ASYNC, |
2020 | }; | |
9512135d | 2021 | int status = -ENOMEM; |
1da177e4 | 2022 | |
8535b2be | 2023 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2024 | if (calldata == NULL) |
9512135d | 2025 | goto out; |
4a35bd41 | 2026 | calldata->inode = state->inode; |
1da177e4 | 2027 | calldata->state = state; |
4a35bd41 | 2028 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2029 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2030 | /* Serialization for the sequence id */ |
8535b2be | 2031 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2032 | if (calldata->arg.seqid == NULL) |
2033 | goto out_free_calldata; | |
dc0b027d | 2034 | calldata->arg.fmode = 0; |
a65318bf | 2035 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2036 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2037 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2038 | calldata->res.server = server; |
f7e8917a | 2039 | calldata->roc = roc; |
f6948697 AV |
2040 | path_get(path); |
2041 | calldata->path = *path; | |
9512135d | 2042 | |
1174dd1f TM |
2043 | msg.rpc_argp = &calldata->arg; |
2044 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2045 | task_setup_data.callback_data = calldata; |
2046 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2047 | if (IS_ERR(task)) |
2048 | return PTR_ERR(task); | |
a49c3c77 TM |
2049 | status = 0; |
2050 | if (wait) | |
2051 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2052 | rpc_put_task(task); |
a49c3c77 | 2053 | return status; |
9512135d TM |
2054 | out_free_calldata: |
2055 | kfree(calldata); | |
2056 | out: | |
f7e8917a FI |
2057 | if (roc) |
2058 | pnfs_roc_release(state->inode); | |
b39e625b TM |
2059 | nfs4_put_open_state(state); |
2060 | nfs4_put_state_owner(sp); | |
9512135d | 2061 | return status; |
1da177e4 LT |
2062 | } |
2063 | ||
2b484297 | 2064 | static struct inode * |
cd9a1c0e | 2065 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2066 | { |
1da177e4 | 2067 | struct nfs4_state *state; |
1da177e4 | 2068 | |
565277f6 | 2069 | /* Protect against concurrent sillydeletes */ |
cd9a1c0e | 2070 | state = nfs4_do_open(dir, &ctx->path, ctx->mode, open_flags, attr, ctx->cred); |
f46e0bd3 TM |
2071 | if (IS_ERR(state)) |
2072 | return ERR_CAST(state); | |
cd9a1c0e | 2073 | ctx->state = state; |
f46e0bd3 | 2074 | return igrab(state->inode); |
1da177e4 LT |
2075 | } |
2076 | ||
1185a552 | 2077 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2078 | { |
2079 | if (ctx->state == NULL) | |
2080 | return; | |
2081 | if (is_sync) | |
2082 | nfs4_close_sync(&ctx->path, ctx->state, ctx->mode); | |
2083 | else | |
2084 | nfs4_close_state(&ctx->path, ctx->state, ctx->mode); | |
2085 | } | |
1da177e4 LT |
2086 | |
2087 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2088 | { | |
43652ad5 BH |
2089 | struct nfs4_server_caps_arg args = { |
2090 | .fhandle = fhandle, | |
2091 | }; | |
1da177e4 LT |
2092 | struct nfs4_server_caps_res res = {}; |
2093 | struct rpc_message msg = { | |
2094 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2095 | .rpc_argp = &args, |
1da177e4 LT |
2096 | .rpc_resp = &res, |
2097 | }; | |
2098 | int status; | |
2099 | ||
e73b83f2 | 2100 | status = nfs4_call_sync(server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2101 | if (status == 0) { |
2102 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2103 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2104 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2105 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2106 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2107 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2108 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2109 | server->caps |= NFS_CAP_ACLS; | |
2110 | if (res.has_links != 0) | |
2111 | server->caps |= NFS_CAP_HARDLINKS; | |
2112 | if (res.has_symlinks != 0) | |
2113 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2114 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2115 | server->caps |= NFS_CAP_FILEID; | |
2116 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2117 | server->caps |= NFS_CAP_MODE; | |
2118 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2119 | server->caps |= NFS_CAP_NLINK; | |
2120 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2121 | server->caps |= NFS_CAP_OWNER; | |
2122 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2123 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2124 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2125 | server->caps |= NFS_CAP_ATIME; | |
2126 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2127 | server->caps |= NFS_CAP_CTIME; | |
2128 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2129 | server->caps |= NFS_CAP_MTIME; | |
2130 | ||
a65318bf TM |
2131 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2132 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2133 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 LT |
2134 | server->acl_bitmask = res.acl_bitmask; |
2135 | } | |
cccef3b9 | 2136 | |
1da177e4 LT |
2137 | return status; |
2138 | } | |
2139 | ||
55a97593 | 2140 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2141 | { |
2142 | struct nfs4_exception exception = { }; | |
2143 | int err; | |
2144 | do { | |
2145 | err = nfs4_handle_exception(server, | |
2146 | _nfs4_server_capabilities(server, fhandle), | |
2147 | &exception); | |
2148 | } while (exception.retry); | |
2149 | return err; | |
2150 | } | |
2151 | ||
2152 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2153 | struct nfs_fsinfo *info) | |
2154 | { | |
1da177e4 LT |
2155 | struct nfs4_lookup_root_arg args = { |
2156 | .bitmask = nfs4_fattr_bitmap, | |
2157 | }; | |
2158 | struct nfs4_lookup_res res = { | |
2159 | .server = server, | |
0e574af1 | 2160 | .fattr = info->fattr, |
1da177e4 LT |
2161 | .fh = fhandle, |
2162 | }; | |
2163 | struct rpc_message msg = { | |
2164 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2165 | .rpc_argp = &args, | |
2166 | .rpc_resp = &res, | |
2167 | }; | |
008f55d0 | 2168 | |
0e574af1 | 2169 | nfs_fattr_init(info->fattr); |
e73b83f2 | 2170 | return nfs4_call_sync(server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2171 | } |
2172 | ||
2173 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2174 | struct nfs_fsinfo *info) | |
2175 | { | |
2176 | struct nfs4_exception exception = { }; | |
2177 | int err; | |
2178 | do { | |
2179 | err = nfs4_handle_exception(server, | |
2180 | _nfs4_lookup_root(server, fhandle, info), | |
2181 | &exception); | |
2182 | } while (exception.retry); | |
2183 | return err; | |
2184 | } | |
2185 | ||
54ceac45 DH |
2186 | /* |
2187 | * get the file handle for the "/" directory on the server | |
2188 | */ | |
1da177e4 | 2189 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2190 | struct nfs_fsinfo *info) |
1da177e4 | 2191 | { |
1da177e4 LT |
2192 | int status; |
2193 | ||
1da177e4 | 2194 | status = nfs4_lookup_root(server, fhandle, info); |
1da177e4 LT |
2195 | if (status == 0) |
2196 | status = nfs4_server_capabilities(server, fhandle); | |
2197 | if (status == 0) | |
2198 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2199 | return nfs4_map_errors(status); |
1da177e4 LT |
2200 | } |
2201 | ||
6b97fd3d MN |
2202 | /* |
2203 | * Get locations and (maybe) other attributes of a referral. | |
2204 | * Note that we'll actually follow the referral later when | |
2205 | * we detect fsid mismatch in inode revalidation | |
2206 | */ | |
56659e99 | 2207 | static int nfs4_get_referral(struct inode *dir, const struct qstr *name, struct nfs_fattr *fattr, struct nfs_fh *fhandle) |
6b97fd3d MN |
2208 | { |
2209 | int status = -ENOMEM; | |
2210 | struct page *page = NULL; | |
2211 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2212 | |
2213 | page = alloc_page(GFP_KERNEL); | |
2214 | if (page == NULL) | |
2215 | goto out; | |
2216 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2217 | if (locations == NULL) | |
2218 | goto out; | |
2219 | ||
c228fd3a | 2220 | status = nfs4_proc_fs_locations(dir, name, locations, page); |
6b97fd3d MN |
2221 | if (status != 0) |
2222 | goto out; | |
2223 | /* Make sure server returned a different fsid for the referral */ | |
2224 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
3110ff80 | 2225 | dprintk("%s: server did not return a different fsid for a referral at %s\n", __func__, name->name); |
6b97fd3d MN |
2226 | status = -EIO; |
2227 | goto out; | |
2228 | } | |
2229 | ||
2230 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); | |
2231 | fattr->valid |= NFS_ATTR_FATTR_V4_REFERRAL; | |
2232 | if (!fattr->mode) | |
2233 | fattr->mode = S_IFDIR; | |
2234 | memset(fhandle, 0, sizeof(struct nfs_fh)); | |
2235 | out: | |
2236 | if (page) | |
2237 | __free_page(page); | |
5d7ca35a | 2238 | kfree(locations); |
6b97fd3d MN |
2239 | return status; |
2240 | } | |
2241 | ||
1da177e4 LT |
2242 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2243 | { | |
2244 | struct nfs4_getattr_arg args = { | |
2245 | .fh = fhandle, | |
2246 | .bitmask = server->attr_bitmask, | |
2247 | }; | |
2248 | struct nfs4_getattr_res res = { | |
2249 | .fattr = fattr, | |
2250 | .server = server, | |
2251 | }; | |
2252 | struct rpc_message msg = { | |
2253 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2254 | .rpc_argp = &args, | |
2255 | .rpc_resp = &res, | |
2256 | }; | |
2257 | ||
0e574af1 | 2258 | nfs_fattr_init(fattr); |
e73b83f2 | 2259 | return nfs4_call_sync(server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2260 | } |
2261 | ||
2262 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2263 | { | |
2264 | struct nfs4_exception exception = { }; | |
2265 | int err; | |
2266 | do { | |
2267 | err = nfs4_handle_exception(server, | |
2268 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2269 | &exception); | |
2270 | } while (exception.retry); | |
2271 | return err; | |
2272 | } | |
2273 | ||
2274 | /* | |
2275 | * The file is not closed if it is opened due to the a request to change | |
2276 | * the size of the file. The open call will not be needed once the | |
2277 | * VFS layer lookup-intents are implemented. | |
2278 | * | |
2279 | * Close is called when the inode is destroyed. | |
2280 | * If we haven't opened the file for O_WRONLY, we | |
2281 | * need to in the size_change case to obtain a stateid. | |
2282 | * | |
2283 | * Got race? | |
2284 | * Because OPEN is always done by name in nfsv4, it is | |
2285 | * possible that we opened a different file by the same | |
2286 | * name. We can recognize this race condition, but we | |
2287 | * can't do anything about it besides returning an error. | |
2288 | * | |
2289 | * This will be fixed with VFS changes (lookup-intent). | |
2290 | */ | |
2291 | static int | |
2292 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2293 | struct iattr *sattr) | |
2294 | { | |
08e9eac4 | 2295 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2296 | struct rpc_cred *cred = NULL; |
d530838b | 2297 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2298 | int status; |
2299 | ||
0e574af1 | 2300 | nfs_fattr_init(fattr); |
1da177e4 | 2301 | |
d530838b | 2302 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2303 | if (sattr->ia_valid & ATTR_FILE) { |
2304 | struct nfs_open_context *ctx; | |
2305 | ||
2306 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2307 | if (ctx) { |
2308 | cred = ctx->cred; | |
2309 | state = ctx->state; | |
2310 | } | |
659bfcd6 | 2311 | } |
08e9eac4 | 2312 | |
659bfcd6 | 2313 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2314 | if (status == 0) |
2315 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2316 | return status; |
2317 | } | |
2318 | ||
56659e99 TM |
2319 | static int _nfs4_proc_lookupfh(struct nfs_server *server, const struct nfs_fh *dirfh, |
2320 | const struct qstr *name, struct nfs_fh *fhandle, | |
2b3de441 DH |
2321 | struct nfs_fattr *fattr) |
2322 | { | |
2323 | int status; | |
2324 | struct nfs4_lookup_arg args = { | |
2325 | .bitmask = server->attr_bitmask, | |
2326 | .dir_fh = dirfh, | |
2327 | .name = name, | |
2328 | }; | |
2329 | struct nfs4_lookup_res res = { | |
2330 | .server = server, | |
2331 | .fattr = fattr, | |
2332 | .fh = fhandle, | |
2333 | }; | |
2334 | struct rpc_message msg = { | |
2335 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2336 | .rpc_argp = &args, | |
2337 | .rpc_resp = &res, | |
2338 | }; | |
2339 | ||
2340 | nfs_fattr_init(fattr); | |
2341 | ||
2342 | dprintk("NFS call lookupfh %s\n", name->name); | |
e73b83f2 | 2343 | status = nfs4_call_sync(server, &msg, &args.seq_args, &res.seq_res, 0); |
2b3de441 | 2344 | dprintk("NFS reply lookupfh: %d\n", status); |
2b3de441 DH |
2345 | return status; |
2346 | } | |
2347 | ||
2348 | static int nfs4_proc_lookupfh(struct nfs_server *server, struct nfs_fh *dirfh, | |
2349 | struct qstr *name, struct nfs_fh *fhandle, | |
2350 | struct nfs_fattr *fattr) | |
2351 | { | |
2352 | struct nfs4_exception exception = { }; | |
2353 | int err; | |
2354 | do { | |
4e56e082 TM |
2355 | err = _nfs4_proc_lookupfh(server, dirfh, name, fhandle, fattr); |
2356 | /* FIXME: !!!! */ | |
2357 | if (err == -NFS4ERR_MOVED) { | |
2358 | err = -EREMOTE; | |
2359 | break; | |
2360 | } | |
2361 | err = nfs4_handle_exception(server, err, &exception); | |
2b3de441 DH |
2362 | } while (exception.retry); |
2363 | return err; | |
2364 | } | |
2365 | ||
56659e99 | 2366 | static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, |
1da177e4 LT |
2367 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2368 | { | |
4e56e082 | 2369 | int status; |
1da177e4 LT |
2370 | |
2371 | dprintk("NFS call lookup %s\n", name->name); | |
4e56e082 | 2372 | status = _nfs4_proc_lookupfh(NFS_SERVER(dir), NFS_FH(dir), name, fhandle, fattr); |
6b97fd3d MN |
2373 | if (status == -NFS4ERR_MOVED) |
2374 | status = nfs4_get_referral(dir, name, fattr, fhandle); | |
1da177e4 LT |
2375 | dprintk("NFS reply lookup: %d\n", status); |
2376 | return status; | |
2377 | } | |
2378 | ||
2379 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2380 | { | |
2381 | struct nfs4_exception exception = { }; | |
2382 | int err; | |
2383 | do { | |
2384 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2385 | _nfs4_proc_lookup(dir, name, fhandle, fattr), | |
2386 | &exception); | |
2387 | } while (exception.retry); | |
2388 | return err; | |
2389 | } | |
2390 | ||
2391 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2392 | { | |
76b32999 | 2393 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2394 | struct nfs4_accessargs args = { |
2395 | .fh = NFS_FH(inode), | |
76b32999 TM |
2396 | .bitmask = server->attr_bitmask, |
2397 | }; | |
2398 | struct nfs4_accessres res = { | |
2399 | .server = server, | |
1da177e4 | 2400 | }; |
1da177e4 LT |
2401 | struct rpc_message msg = { |
2402 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2403 | .rpc_argp = &args, | |
2404 | .rpc_resp = &res, | |
2405 | .rpc_cred = entry->cred, | |
2406 | }; | |
2407 | int mode = entry->mask; | |
2408 | int status; | |
2409 | ||
2410 | /* | |
2411 | * Determine which access bits we want to ask for... | |
2412 | */ | |
2413 | if (mode & MAY_READ) | |
2414 | args.access |= NFS4_ACCESS_READ; | |
2415 | if (S_ISDIR(inode->i_mode)) { | |
2416 | if (mode & MAY_WRITE) | |
2417 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2418 | if (mode & MAY_EXEC) | |
2419 | args.access |= NFS4_ACCESS_LOOKUP; | |
2420 | } else { | |
2421 | if (mode & MAY_WRITE) | |
2422 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2423 | if (mode & MAY_EXEC) | |
2424 | args.access |= NFS4_ACCESS_EXECUTE; | |
2425 | } | |
c407d41a TM |
2426 | |
2427 | res.fattr = nfs_alloc_fattr(); | |
2428 | if (res.fattr == NULL) | |
2429 | return -ENOMEM; | |
2430 | ||
e73b83f2 | 2431 | status = nfs4_call_sync(server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2432 | if (!status) { |
2433 | entry->mask = 0; | |
2434 | if (res.access & NFS4_ACCESS_READ) | |
2435 | entry->mask |= MAY_READ; | |
2436 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
2437 | entry->mask |= MAY_WRITE; | |
2438 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
2439 | entry->mask |= MAY_EXEC; | |
c407d41a | 2440 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2441 | } |
c407d41a | 2442 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2443 | return status; |
2444 | } | |
2445 | ||
2446 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2447 | { | |
2448 | struct nfs4_exception exception = { }; | |
2449 | int err; | |
2450 | do { | |
2451 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2452 | _nfs4_proc_access(inode, entry), | |
2453 | &exception); | |
2454 | } while (exception.retry); | |
2455 | return err; | |
2456 | } | |
2457 | ||
2458 | /* | |
2459 | * TODO: For the time being, we don't try to get any attributes | |
2460 | * along with any of the zero-copy operations READ, READDIR, | |
2461 | * READLINK, WRITE. | |
2462 | * | |
2463 | * In the case of the first three, we want to put the GETATTR | |
2464 | * after the read-type operation -- this is because it is hard | |
2465 | * to predict the length of a GETATTR response in v4, and thus | |
2466 | * align the READ data correctly. This means that the GETATTR | |
2467 | * may end up partially falling into the page cache, and we should | |
2468 | * shift it into the 'tail' of the xdr_buf before processing. | |
2469 | * To do this efficiently, we need to know the total length | |
2470 | * of data received, which doesn't seem to be available outside | |
2471 | * of the RPC layer. | |
2472 | * | |
2473 | * In the case of WRITE, we also want to put the GETATTR after | |
2474 | * the operation -- in this case because we want to make sure | |
2475 | * we get the post-operation mtime and size. This means that | |
2476 | * we can't use xdr_encode_pages() as written: we need a variant | |
2477 | * of it which would leave room in the 'tail' iovec. | |
2478 | * | |
2479 | * Both of these changes to the XDR layer would in fact be quite | |
2480 | * minor, but I decided to leave them for a subsequent patch. | |
2481 | */ | |
2482 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2483 | unsigned int pgbase, unsigned int pglen) | |
2484 | { | |
2485 | struct nfs4_readlink args = { | |
2486 | .fh = NFS_FH(inode), | |
2487 | .pgbase = pgbase, | |
2488 | .pglen = pglen, | |
2489 | .pages = &page, | |
2490 | }; | |
f50c7000 | 2491 | struct nfs4_readlink_res res; |
1da177e4 LT |
2492 | struct rpc_message msg = { |
2493 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2494 | .rpc_argp = &args, | |
f50c7000 | 2495 | .rpc_resp = &res, |
1da177e4 LT |
2496 | }; |
2497 | ||
e73b83f2 | 2498 | return nfs4_call_sync(NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2499 | } |
2500 | ||
2501 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2502 | unsigned int pgbase, unsigned int pglen) | |
2503 | { | |
2504 | struct nfs4_exception exception = { }; | |
2505 | int err; | |
2506 | do { | |
2507 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2508 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2509 | &exception); | |
2510 | } while (exception.retry); | |
2511 | return err; | |
2512 | } | |
2513 | ||
1da177e4 LT |
2514 | /* |
2515 | * Got race? | |
2516 | * We will need to arrange for the VFS layer to provide an atomic open. | |
2517 | * Until then, this create/open method is prone to inefficiency and race | |
2518 | * conditions due to the lookup, create, and open VFS calls from sys_open() | |
2519 | * placed on the wire. | |
2520 | * | |
2521 | * Given the above sorry state of affairs, I'm simply sending an OPEN. | |
2522 | * The file will be opened again in the subsequent VFS open call | |
2523 | * (nfs4_proc_file_open). | |
2524 | * | |
2525 | * The open for read will just hang around to be used by any process that | |
2526 | * opens the file O_RDONLY. This will all be resolved with the VFS changes. | |
2527 | */ | |
2528 | ||
2529 | static int | |
2530 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
c0204fd2 | 2531 | int flags, struct nfs_open_context *ctx) |
1da177e4 | 2532 | { |
c0204fd2 | 2533 | struct path my_path = { |
ad389da7 TM |
2534 | .dentry = dentry, |
2535 | }; | |
c0204fd2 | 2536 | struct path *path = &my_path; |
1da177e4 | 2537 | struct nfs4_state *state; |
c0204fd2 TM |
2538 | struct rpc_cred *cred = NULL; |
2539 | fmode_t fmode = 0; | |
1da177e4 LT |
2540 | int status = 0; |
2541 | ||
c0204fd2 TM |
2542 | if (ctx != NULL) { |
2543 | cred = ctx->cred; | |
2544 | path = &ctx->path; | |
2545 | fmode = ctx->mode; | |
1da177e4 | 2546 | } |
a8a5da99 | 2547 | sattr->ia_mode &= ~current_umask(); |
c0204fd2 | 2548 | state = nfs4_do_open(dir, path, fmode, flags, sattr, cred); |
d4d9cdcb | 2549 | d_drop(dentry); |
1da177e4 LT |
2550 | if (IS_ERR(state)) { |
2551 | status = PTR_ERR(state); | |
c0204fd2 | 2552 | goto out; |
1da177e4 | 2553 | } |
d4d9cdcb | 2554 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2555 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
c0204fd2 TM |
2556 | if (ctx != NULL) |
2557 | ctx->state = state; | |
02a913a7 | 2558 | else |
c0204fd2 | 2559 | nfs4_close_sync(path, state, fmode); |
1da177e4 LT |
2560 | out: |
2561 | return status; | |
2562 | } | |
2563 | ||
2564 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2565 | { | |
16e42959 | 2566 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2567 | struct nfs_removeargs args = { |
1da177e4 | 2568 | .fh = NFS_FH(dir), |
4fdc17b2 TM |
2569 | .name.len = name->len, |
2570 | .name.name = name->name, | |
16e42959 TM |
2571 | .bitmask = server->attr_bitmask, |
2572 | }; | |
4fdc17b2 | 2573 | struct nfs_removeres res = { |
16e42959 | 2574 | .server = server, |
1da177e4 | 2575 | }; |
1da177e4 | 2576 | struct rpc_message msg = { |
4fdc17b2 TM |
2577 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2578 | .rpc_argp = &args, | |
2579 | .rpc_resp = &res, | |
1da177e4 | 2580 | }; |
d346890b TM |
2581 | int status = -ENOMEM; |
2582 | ||
2583 | res.dir_attr = nfs_alloc_fattr(); | |
2584 | if (res.dir_attr == NULL) | |
2585 | goto out; | |
1da177e4 | 2586 | |
e73b83f2 | 2587 | status = nfs4_call_sync(server, &msg, &args.seq_args, &res.seq_res, 1); |
16e42959 TM |
2588 | if (status == 0) { |
2589 | update_changeattr(dir, &res.cinfo); | |
d346890b | 2590 | nfs_post_op_update_inode(dir, res.dir_attr); |
16e42959 | 2591 | } |
d346890b TM |
2592 | nfs_free_fattr(res.dir_attr); |
2593 | out: | |
1da177e4 LT |
2594 | return status; |
2595 | } | |
2596 | ||
2597 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2598 | { | |
2599 | struct nfs4_exception exception = { }; | |
2600 | int err; | |
2601 | do { | |
2602 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2603 | _nfs4_proc_remove(dir, name), | |
2604 | &exception); | |
2605 | } while (exception.retry); | |
2606 | return err; | |
2607 | } | |
2608 | ||
e4eff1a6 | 2609 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2610 | { |
e4eff1a6 TM |
2611 | struct nfs_server *server = NFS_SERVER(dir); |
2612 | struct nfs_removeargs *args = msg->rpc_argp; | |
2613 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2614 | |
a65318bf | 2615 | args->bitmask = server->cache_consistency_bitmask; |
e4eff1a6 | 2616 | res->server = server; |
dfb4f309 | 2617 | res->seq_res.sr_slot = NULL; |
1da177e4 | 2618 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
1da177e4 LT |
2619 | } |
2620 | ||
e4eff1a6 | 2621 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2622 | { |
e4eff1a6 TM |
2623 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2624 | ||
14516c3a TM |
2625 | if (!nfs4_sequence_done(task, &res->seq_res)) |
2626 | return 0; | |
9e33bed5 | 2627 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
2628 | return 0; |
2629 | update_changeattr(dir, &res->cinfo); | |
d346890b | 2630 | nfs_post_op_update_inode(dir, res->dir_attr); |
e4eff1a6 | 2631 | return 1; |
1da177e4 LT |
2632 | } |
2633 | ||
d3d4152a JL |
2634 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
2635 | { | |
2636 | struct nfs_server *server = NFS_SERVER(dir); | |
2637 | struct nfs_renameargs *arg = msg->rpc_argp; | |
2638 | struct nfs_renameres *res = msg->rpc_resp; | |
2639 | ||
2640 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
2641 | arg->bitmask = server->attr_bitmask; | |
2642 | res->server = server; | |
2643 | } | |
2644 | ||
2645 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
2646 | struct inode *new_dir) | |
2647 | { | |
2648 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
2649 | ||
2650 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
2651 | return 0; | |
2652 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
2653 | return 0; | |
2654 | ||
2655 | update_changeattr(old_dir, &res->old_cinfo); | |
2656 | nfs_post_op_update_inode(old_dir, res->old_fattr); | |
2657 | update_changeattr(new_dir, &res->new_cinfo); | |
2658 | nfs_post_op_update_inode(new_dir, res->new_fattr); | |
2659 | return 1; | |
2660 | } | |
2661 | ||
1da177e4 LT |
2662 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
2663 | struct inode *new_dir, struct qstr *new_name) | |
2664 | { | |
6caf2c82 | 2665 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 2666 | struct nfs_renameargs arg = { |
1da177e4 LT |
2667 | .old_dir = NFS_FH(old_dir), |
2668 | .new_dir = NFS_FH(new_dir), | |
2669 | .old_name = old_name, | |
2670 | .new_name = new_name, | |
6caf2c82 TM |
2671 | .bitmask = server->attr_bitmask, |
2672 | }; | |
e8582a8b | 2673 | struct nfs_renameres res = { |
6caf2c82 | 2674 | .server = server, |
1da177e4 | 2675 | }; |
1da177e4 LT |
2676 | struct rpc_message msg = { |
2677 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2678 | .rpc_argp = &arg, | |
2679 | .rpc_resp = &res, | |
2680 | }; | |
011fff72 | 2681 | int status = -ENOMEM; |
1da177e4 | 2682 | |
011fff72 TM |
2683 | res.old_fattr = nfs_alloc_fattr(); |
2684 | res.new_fattr = nfs_alloc_fattr(); | |
2685 | if (res.old_fattr == NULL || res.new_fattr == NULL) | |
2686 | goto out; | |
1da177e4 | 2687 | |
e73b83f2 | 2688 | status = nfs4_call_sync(server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
2689 | if (!status) { |
2690 | update_changeattr(old_dir, &res.old_cinfo); | |
6caf2c82 | 2691 | nfs_post_op_update_inode(old_dir, res.old_fattr); |
1da177e4 | 2692 | update_changeattr(new_dir, &res.new_cinfo); |
6caf2c82 | 2693 | nfs_post_op_update_inode(new_dir, res.new_fattr); |
1da177e4 | 2694 | } |
011fff72 TM |
2695 | out: |
2696 | nfs_free_fattr(res.new_fattr); | |
2697 | nfs_free_fattr(res.old_fattr); | |
1da177e4 LT |
2698 | return status; |
2699 | } | |
2700 | ||
2701 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2702 | struct inode *new_dir, struct qstr *new_name) | |
2703 | { | |
2704 | struct nfs4_exception exception = { }; | |
2705 | int err; | |
2706 | do { | |
2707 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2708 | _nfs4_proc_rename(old_dir, old_name, | |
2709 | new_dir, new_name), | |
2710 | &exception); | |
2711 | } while (exception.retry); | |
2712 | return err; | |
2713 | } | |
2714 | ||
2715 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2716 | { | |
91ba2eee | 2717 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2718 | struct nfs4_link_arg arg = { |
2719 | .fh = NFS_FH(inode), | |
2720 | .dir_fh = NFS_FH(dir), | |
2721 | .name = name, | |
91ba2eee TM |
2722 | .bitmask = server->attr_bitmask, |
2723 | }; | |
91ba2eee TM |
2724 | struct nfs4_link_res res = { |
2725 | .server = server, | |
1da177e4 | 2726 | }; |
1da177e4 LT |
2727 | struct rpc_message msg = { |
2728 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
2729 | .rpc_argp = &arg, | |
91ba2eee | 2730 | .rpc_resp = &res, |
1da177e4 | 2731 | }; |
136f2627 TM |
2732 | int status = -ENOMEM; |
2733 | ||
2734 | res.fattr = nfs_alloc_fattr(); | |
2735 | res.dir_attr = nfs_alloc_fattr(); | |
2736 | if (res.fattr == NULL || res.dir_attr == NULL) | |
2737 | goto out; | |
1da177e4 | 2738 | |
e73b83f2 | 2739 | status = nfs4_call_sync(server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
2740 | if (!status) { |
2741 | update_changeattr(dir, &res.cinfo); | |
2742 | nfs_post_op_update_inode(dir, res.dir_attr); | |
73a3d07c | 2743 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 2744 | } |
136f2627 TM |
2745 | out: |
2746 | nfs_free_fattr(res.dir_attr); | |
2747 | nfs_free_fattr(res.fattr); | |
1da177e4 LT |
2748 | return status; |
2749 | } | |
2750 | ||
2751 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2752 | { | |
2753 | struct nfs4_exception exception = { }; | |
2754 | int err; | |
2755 | do { | |
2756 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2757 | _nfs4_proc_link(inode, dir, name), | |
2758 | &exception); | |
2759 | } while (exception.retry); | |
2760 | return err; | |
2761 | } | |
2762 | ||
57dc9a57 TM |
2763 | struct nfs4_createdata { |
2764 | struct rpc_message msg; | |
2765 | struct nfs4_create_arg arg; | |
2766 | struct nfs4_create_res res; | |
2767 | struct nfs_fh fh; | |
2768 | struct nfs_fattr fattr; | |
2769 | struct nfs_fattr dir_fattr; | |
2770 | }; | |
2771 | ||
2772 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
2773 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
2774 | { | |
2775 | struct nfs4_createdata *data; | |
2776 | ||
2777 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
2778 | if (data != NULL) { | |
2779 | struct nfs_server *server = NFS_SERVER(dir); | |
2780 | ||
2781 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
2782 | data->msg.rpc_argp = &data->arg; | |
2783 | data->msg.rpc_resp = &data->res; | |
2784 | data->arg.dir_fh = NFS_FH(dir); | |
2785 | data->arg.server = server; | |
2786 | data->arg.name = name; | |
2787 | data->arg.attrs = sattr; | |
2788 | data->arg.ftype = ftype; | |
2789 | data->arg.bitmask = server->attr_bitmask; | |
2790 | data->res.server = server; | |
2791 | data->res.fh = &data->fh; | |
2792 | data->res.fattr = &data->fattr; | |
2793 | data->res.dir_fattr = &data->dir_fattr; | |
2794 | nfs_fattr_init(data->res.fattr); | |
2795 | nfs_fattr_init(data->res.dir_fattr); | |
2796 | } | |
2797 | return data; | |
2798 | } | |
2799 | ||
2800 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
2801 | { | |
cccef3b9 | 2802 | int status = nfs4_call_sync(NFS_SERVER(dir), &data->msg, |
e73b83f2 | 2803 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
2804 | if (status == 0) { |
2805 | update_changeattr(dir, &data->res.dir_cinfo); | |
2806 | nfs_post_op_update_inode(dir, data->res.dir_fattr); | |
2807 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); | |
2808 | } | |
2809 | return status; | |
2810 | } | |
2811 | ||
2812 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
2813 | { | |
2814 | kfree(data); | |
2815 | } | |
2816 | ||
4f390c15 | 2817 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2818 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 2819 | { |
57dc9a57 TM |
2820 | struct nfs4_createdata *data; |
2821 | int status = -ENAMETOOLONG; | |
1da177e4 | 2822 | |
94a6d753 | 2823 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 2824 | goto out; |
4f390c15 | 2825 | |
57dc9a57 TM |
2826 | status = -ENOMEM; |
2827 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
2828 | if (data == NULL) | |
2829 | goto out; | |
2830 | ||
2831 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
2832 | data->arg.u.symlink.pages = &page; | |
2833 | data->arg.u.symlink.len = len; | |
1da177e4 | 2834 | |
57dc9a57 TM |
2835 | status = nfs4_do_create(dir, dentry, data); |
2836 | ||
2837 | nfs4_free_createdata(data); | |
2838 | out: | |
1da177e4 LT |
2839 | return status; |
2840 | } | |
2841 | ||
4f390c15 | 2842 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2843 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
2844 | { |
2845 | struct nfs4_exception exception = { }; | |
2846 | int err; | |
2847 | do { | |
2848 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
2849 | _nfs4_proc_symlink(dir, dentry, page, |
2850 | len, sattr), | |
1da177e4 LT |
2851 | &exception); |
2852 | } while (exception.retry); | |
2853 | return err; | |
2854 | } | |
2855 | ||
2856 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2857 | struct iattr *sattr) | |
2858 | { | |
57dc9a57 TM |
2859 | struct nfs4_createdata *data; |
2860 | int status = -ENOMEM; | |
1da177e4 | 2861 | |
57dc9a57 TM |
2862 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
2863 | if (data == NULL) | |
2864 | goto out; | |
2865 | ||
2866 | status = nfs4_do_create(dir, dentry, data); | |
2867 | ||
2868 | nfs4_free_createdata(data); | |
2869 | out: | |
1da177e4 LT |
2870 | return status; |
2871 | } | |
2872 | ||
2873 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2874 | struct iattr *sattr) | |
2875 | { | |
2876 | struct nfs4_exception exception = { }; | |
2877 | int err; | |
a8a5da99 AK |
2878 | |
2879 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
2880 | do { |
2881 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2882 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
2883 | &exception); | |
2884 | } while (exception.retry); | |
2885 | return err; | |
2886 | } | |
2887 | ||
2888 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 2889 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
2890 | { |
2891 | struct inode *dir = dentry->d_inode; | |
2892 | struct nfs4_readdir_arg args = { | |
2893 | .fh = NFS_FH(dir), | |
56e4ebf8 | 2894 | .pages = pages, |
1da177e4 LT |
2895 | .pgbase = 0, |
2896 | .count = count, | |
96d25e53 | 2897 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 2898 | .plus = plus, |
1da177e4 LT |
2899 | }; |
2900 | struct nfs4_readdir_res res; | |
2901 | struct rpc_message msg = { | |
2902 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
2903 | .rpc_argp = &args, | |
2904 | .rpc_resp = &res, | |
2905 | .rpc_cred = cred, | |
2906 | }; | |
2907 | int status; | |
2908 | ||
3110ff80 | 2909 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
2910 | dentry->d_parent->d_name.name, |
2911 | dentry->d_name.name, | |
2912 | (unsigned long long)cookie); | |
1da177e4 LT |
2913 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
2914 | res.pgbase = args.pgbase; | |
e73b83f2 | 2915 | status = nfs4_call_sync(NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 2916 | if (status >= 0) { |
1da177e4 | 2917 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
2918 | status += args.pgbase; |
2919 | } | |
c4812998 TM |
2920 | |
2921 | nfs_invalidate_atime(dir); | |
2922 | ||
3110ff80 | 2923 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
2924 | return status; |
2925 | } | |
2926 | ||
2927 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 2928 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
2929 | { |
2930 | struct nfs4_exception exception = { }; | |
2931 | int err; | |
2932 | do { | |
2933 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
2934 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 2935 | pages, count, plus), |
1da177e4 LT |
2936 | &exception); |
2937 | } while (exception.retry); | |
2938 | return err; | |
2939 | } | |
2940 | ||
2941 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2942 | struct iattr *sattr, dev_t rdev) | |
2943 | { | |
57dc9a57 TM |
2944 | struct nfs4_createdata *data; |
2945 | int mode = sattr->ia_mode; | |
2946 | int status = -ENOMEM; | |
1da177e4 LT |
2947 | |
2948 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
2949 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
57dc9a57 TM |
2950 | |
2951 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); | |
2952 | if (data == NULL) | |
2953 | goto out; | |
2954 | ||
1da177e4 | 2955 | if (S_ISFIFO(mode)) |
57dc9a57 | 2956 | data->arg.ftype = NF4FIFO; |
1da177e4 | 2957 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
2958 | data->arg.ftype = NF4BLK; |
2959 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
2960 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
2961 | } |
2962 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
2963 | data->arg.ftype = NF4CHR; |
2964 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
2965 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 | 2966 | } |
1da177e4 | 2967 | |
57dc9a57 TM |
2968 | status = nfs4_do_create(dir, dentry, data); |
2969 | ||
2970 | nfs4_free_createdata(data); | |
2971 | out: | |
1da177e4 LT |
2972 | return status; |
2973 | } | |
2974 | ||
2975 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2976 | struct iattr *sattr, dev_t rdev) | |
2977 | { | |
2978 | struct nfs4_exception exception = { }; | |
2979 | int err; | |
a8a5da99 AK |
2980 | |
2981 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
2982 | do { |
2983 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2984 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
2985 | &exception); | |
2986 | } while (exception.retry); | |
2987 | return err; | |
2988 | } | |
2989 | ||
2990 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
2991 | struct nfs_fsstat *fsstat) | |
2992 | { | |
2993 | struct nfs4_statfs_arg args = { | |
2994 | .fh = fhandle, | |
2995 | .bitmask = server->attr_bitmask, | |
2996 | }; | |
24ad148a BH |
2997 | struct nfs4_statfs_res res = { |
2998 | .fsstat = fsstat, | |
2999 | }; | |
1da177e4 LT |
3000 | struct rpc_message msg = { |
3001 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3002 | .rpc_argp = &args, | |
24ad148a | 3003 | .rpc_resp = &res, |
1da177e4 LT |
3004 | }; |
3005 | ||
0e574af1 | 3006 | nfs_fattr_init(fsstat->fattr); |
e73b83f2 | 3007 | return nfs4_call_sync(server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3008 | } |
3009 | ||
3010 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3011 | { | |
3012 | struct nfs4_exception exception = { }; | |
3013 | int err; | |
3014 | do { | |
3015 | err = nfs4_handle_exception(server, | |
3016 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3017 | &exception); | |
3018 | } while (exception.retry); | |
3019 | return err; | |
3020 | } | |
3021 | ||
3022 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3023 | struct nfs_fsinfo *fsinfo) | |
3024 | { | |
3025 | struct nfs4_fsinfo_arg args = { | |
3026 | .fh = fhandle, | |
3027 | .bitmask = server->attr_bitmask, | |
3028 | }; | |
3dda5e43 BH |
3029 | struct nfs4_fsinfo_res res = { |
3030 | .fsinfo = fsinfo, | |
3031 | }; | |
1da177e4 LT |
3032 | struct rpc_message msg = { |
3033 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3034 | .rpc_argp = &args, | |
3dda5e43 | 3035 | .rpc_resp = &res, |
1da177e4 LT |
3036 | }; |
3037 | ||
e73b83f2 | 3038 | return nfs4_call_sync(server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3039 | } |
3040 | ||
3041 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3042 | { | |
3043 | struct nfs4_exception exception = { }; | |
3044 | int err; | |
3045 | ||
3046 | do { | |
3047 | err = nfs4_handle_exception(server, | |
3048 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
3049 | &exception); | |
3050 | } while (exception.retry); | |
3051 | return err; | |
3052 | } | |
3053 | ||
3054 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3055 | { | |
0e574af1 | 3056 | nfs_fattr_init(fsinfo->fattr); |
1da177e4 LT |
3057 | return nfs4_do_fsinfo(server, fhandle, fsinfo); |
3058 | } | |
3059 | ||
3060 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3061 | struct nfs_pathconf *pathconf) | |
3062 | { | |
3063 | struct nfs4_pathconf_arg args = { | |
3064 | .fh = fhandle, | |
3065 | .bitmask = server->attr_bitmask, | |
3066 | }; | |
d45b2989 BH |
3067 | struct nfs4_pathconf_res res = { |
3068 | .pathconf = pathconf, | |
3069 | }; | |
1da177e4 LT |
3070 | struct rpc_message msg = { |
3071 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3072 | .rpc_argp = &args, | |
d45b2989 | 3073 | .rpc_resp = &res, |
1da177e4 LT |
3074 | }; |
3075 | ||
3076 | /* None of the pathconf attributes are mandatory to implement */ | |
3077 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3078 | memset(pathconf, 0, sizeof(*pathconf)); | |
3079 | return 0; | |
3080 | } | |
3081 | ||
0e574af1 | 3082 | nfs_fattr_init(pathconf->fattr); |
e73b83f2 | 3083 | return nfs4_call_sync(server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3084 | } |
3085 | ||
3086 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3087 | struct nfs_pathconf *pathconf) | |
3088 | { | |
3089 | struct nfs4_exception exception = { }; | |
3090 | int err; | |
3091 | ||
3092 | do { | |
3093 | err = nfs4_handle_exception(server, | |
3094 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3095 | &exception); | |
3096 | } while (exception.retry); | |
3097 | return err; | |
3098 | } | |
3099 | ||
cbdabc7f | 3100 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3101 | { |
ec06c096 | 3102 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 3103 | |
9e33bed5 | 3104 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
0110ee15 | 3105 | nfs_restart_rpc(task, server->nfs_client); |
ec06c096 | 3106 | return -EAGAIN; |
1da177e4 | 3107 | } |
8850df99 TM |
3108 | |
3109 | nfs_invalidate_atime(data->inode); | |
1da177e4 | 3110 | if (task->tk_status > 0) |
ec06c096 TM |
3111 | renew_lease(server, data->timestamp); |
3112 | return 0; | |
1da177e4 LT |
3113 | } |
3114 | ||
cbdabc7f AA |
3115 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3116 | { | |
3117 | ||
3118 | dprintk("--> %s\n", __func__); | |
3119 | ||
3120 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3121 | return -EAGAIN; | |
3122 | ||
3123 | return data->read_done_cb(task, data); | |
3124 | } | |
3125 | ||
bdc7f021 | 3126 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3127 | { |
1da177e4 | 3128 | data->timestamp = jiffies; |
cbdabc7f | 3129 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3130 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
1da177e4 LT |
3131 | } |
3132 | ||
cbdabc7f AA |
3133 | /* Reset the the nfs_read_data to send the read to the MDS. */ |
3134 | void nfs4_reset_read(struct rpc_task *task, struct nfs_read_data *data) | |
3135 | { | |
3136 | dprintk("%s Reset task for i/o through\n", __func__); | |
3137 | put_lseg(data->lseg); | |
3138 | data->lseg = NULL; | |
3139 | /* offsets will differ in the dense stripe case */ | |
3140 | data->args.offset = data->mds_offset; | |
3141 | data->ds_clp = NULL; | |
3142 | data->args.fh = NFS_FH(data->inode); | |
3143 | data->read_done_cb = nfs4_read_done_cb; | |
3144 | task->tk_ops = data->mds_ops; | |
3145 | rpc_task_reset_client(task, NFS_CLIENT(data->inode)); | |
3146 | } | |
3147 | EXPORT_SYMBOL_GPL(nfs4_reset_read); | |
3148 | ||
b029bc9b | 3149 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3150 | { |
1da177e4 LT |
3151 | struct inode *inode = data->inode; |
3152 | ||
9e33bed5 | 3153 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
0110ee15 | 3154 | nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client); |
788e7a89 | 3155 | return -EAGAIN; |
1da177e4 | 3156 | } |
4f9838c7 | 3157 | if (task->tk_status >= 0) { |
1da177e4 | 3158 | renew_lease(NFS_SERVER(inode), data->timestamp); |
70ca8852 | 3159 | nfs_post_op_update_inode_force_wcc(inode, data->res.fattr); |
4f9838c7 | 3160 | } |
788e7a89 | 3161 | return 0; |
1da177e4 LT |
3162 | } |
3163 | ||
b029bc9b FI |
3164 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3165 | { | |
3166 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3167 | return -EAGAIN; | |
3168 | return data->write_done_cb(task, data); | |
3169 | } | |
3170 | ||
a69aef14 FI |
3171 | /* Reset the the nfs_write_data to send the write to the MDS. */ |
3172 | void nfs4_reset_write(struct rpc_task *task, struct nfs_write_data *data) | |
3173 | { | |
3174 | dprintk("%s Reset task for i/o through\n", __func__); | |
3175 | put_lseg(data->lseg); | |
3176 | data->lseg = NULL; | |
3177 | data->ds_clp = NULL; | |
3178 | data->write_done_cb = nfs4_write_done_cb; | |
3179 | data->args.fh = NFS_FH(data->inode); | |
3180 | data->args.bitmask = data->res.server->cache_consistency_bitmask; | |
3181 | data->args.offset = data->mds_offset; | |
3182 | data->res.fattr = &data->fattr; | |
3183 | task->tk_ops = data->mds_ops; | |
3184 | rpc_task_reset_client(task, NFS_CLIENT(data->inode)); | |
3185 | } | |
3186 | EXPORT_SYMBOL_GPL(nfs4_reset_write); | |
3187 | ||
bdc7f021 | 3188 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3189 | { |
bdc7f021 TM |
3190 | struct nfs_server *server = NFS_SERVER(data->inode); |
3191 | ||
7ffd1064 FI |
3192 | if (data->lseg) { |
3193 | data->args.bitmask = NULL; | |
3194 | data->res.fattr = NULL; | |
3195 | } else | |
3196 | data->args.bitmask = server->cache_consistency_bitmask; | |
b029bc9b FI |
3197 | if (!data->write_done_cb) |
3198 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3199 | data->res.server = server; |
1da177e4 LT |
3200 | data->timestamp = jiffies; |
3201 | ||
bdc7f021 | 3202 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
1da177e4 LT |
3203 | } |
3204 | ||
788e7a89 | 3205 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3206 | { |
1da177e4 LT |
3207 | struct inode *inode = data->inode; |
3208 | ||
14516c3a TM |
3209 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
3210 | return -EAGAIN; | |
3211 | ||
9e33bed5 | 3212 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
0110ee15 | 3213 | nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client); |
788e7a89 | 3214 | return -EAGAIN; |
1da177e4 | 3215 | } |
9e08a3c5 | 3216 | nfs_refresh_inode(inode, data->res.fattr); |
788e7a89 | 3217 | return 0; |
1da177e4 LT |
3218 | } |
3219 | ||
bdc7f021 | 3220 | static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3221 | { |
788e7a89 | 3222 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 3223 | |
a65318bf | 3224 | data->args.bitmask = server->cache_consistency_bitmask; |
4f9838c7 | 3225 | data->res.server = server; |
bdc7f021 | 3226 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
1da177e4 LT |
3227 | } |
3228 | ||
9bc4e3ca CL |
3229 | struct nfs4_renewdata { |
3230 | struct nfs_client *client; | |
3231 | unsigned long timestamp; | |
3232 | }; | |
3233 | ||
1da177e4 LT |
3234 | /* |
3235 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3236 | * standalone procedure for queueing an asynchronous RENEW. | |
3237 | */ | |
9bc4e3ca | 3238 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3239 | { |
9bc4e3ca CL |
3240 | struct nfs4_renewdata *data = calldata; |
3241 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3242 | |
0851de06 AB |
3243 | if (atomic_read(&clp->cl_count) > 1) |
3244 | nfs4_schedule_state_renewal(clp); | |
3245 | nfs_put_client(clp); | |
9bc4e3ca | 3246 | kfree(data); |
dc96aef9 AB |
3247 | } |
3248 | ||
9bc4e3ca | 3249 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3250 | { |
9bc4e3ca CL |
3251 | struct nfs4_renewdata *data = calldata; |
3252 | struct nfs_client *clp = data->client; | |
3253 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3254 | |
3255 | if (task->tk_status < 0) { | |
95baa25c TM |
3256 | /* Unless we're shutting down, schedule state recovery! */ |
3257 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) != 0) | |
0400a6b0 | 3258 | nfs4_schedule_lease_recovery(clp); |
1da177e4 LT |
3259 | return; |
3260 | } | |
452e9352 | 3261 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3262 | } |
3263 | ||
963d8fe5 TM |
3264 | static const struct rpc_call_ops nfs4_renew_ops = { |
3265 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3266 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3267 | }; |
3268 | ||
adfa6f98 | 3269 | int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3270 | { |
3271 | struct rpc_message msg = { | |
3272 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3273 | .rpc_argp = clp, | |
b4454fe1 | 3274 | .rpc_cred = cred, |
1da177e4 | 3275 | }; |
9bc4e3ca | 3276 | struct nfs4_renewdata *data; |
1da177e4 | 3277 | |
0851de06 AB |
3278 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3279 | return -EIO; | |
9bc4e3ca CL |
3280 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
3281 | if (data == NULL) | |
3282 | return -ENOMEM; | |
3283 | data->client = clp; | |
3284 | data->timestamp = jiffies; | |
1da177e4 | 3285 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3286 | &nfs4_renew_ops, data); |
1da177e4 LT |
3287 | } |
3288 | ||
adfa6f98 | 3289 | int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3290 | { |
3291 | struct rpc_message msg = { | |
3292 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3293 | .rpc_argp = clp, | |
b4454fe1 | 3294 | .rpc_cred = cred, |
1da177e4 LT |
3295 | }; |
3296 | unsigned long now = jiffies; | |
3297 | int status; | |
3298 | ||
3299 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3300 | if (status < 0) | |
3301 | return status; | |
452e9352 | 3302 | do_renew_lease(clp, now); |
1da177e4 LT |
3303 | return 0; |
3304 | } | |
3305 | ||
aa1870af BF |
3306 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3307 | { | |
3308 | return (server->caps & NFS_CAP_ACLS) | |
3309 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3310 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3311 | } | |
3312 | ||
3313 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
3314 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
3315 | * the stack. | |
3316 | */ | |
3317 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
3318 | ||
3319 | static void buf_to_pages(const void *buf, size_t buflen, | |
3320 | struct page **pages, unsigned int *pgbase) | |
3321 | { | |
3322 | const void *p = buf; | |
3323 | ||
3324 | *pgbase = offset_in_page(buf); | |
3325 | p -= *pgbase; | |
3326 | while (p < buf + buflen) { | |
3327 | *(pages++) = virt_to_page(p); | |
3328 | p += PAGE_CACHE_SIZE; | |
3329 | } | |
3330 | } | |
3331 | ||
e9e3d724 NH |
3332 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3333 | struct page **pages, unsigned int *pgbase) | |
3334 | { | |
3335 | struct page *newpage, **spages; | |
3336 | int rc = 0; | |
3337 | size_t len; | |
3338 | spages = pages; | |
3339 | ||
3340 | do { | |
43b7c3f0 | 3341 | len = min_t(size_t, PAGE_CACHE_SIZE, buflen); |
e9e3d724 NH |
3342 | newpage = alloc_page(GFP_KERNEL); |
3343 | ||
3344 | if (newpage == NULL) | |
3345 | goto unwind; | |
3346 | memcpy(page_address(newpage), buf, len); | |
3347 | buf += len; | |
3348 | buflen -= len; | |
3349 | *pages++ = newpage; | |
3350 | rc++; | |
3351 | } while (buflen != 0); | |
3352 | ||
3353 | return rc; | |
3354 | ||
3355 | unwind: | |
3356 | for(; rc > 0; rc--) | |
3357 | __free_page(spages[rc-1]); | |
3358 | return -ENOMEM; | |
3359 | } | |
3360 | ||
e50a1c2e BF |
3361 | struct nfs4_cached_acl { |
3362 | int cached; | |
3363 | size_t len; | |
3e9d4154 | 3364 | char data[0]; |
e50a1c2e BF |
3365 | }; |
3366 | ||
3367 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3368 | { | |
3369 | struct nfs_inode *nfsi = NFS_I(inode); | |
3370 | ||
3371 | spin_lock(&inode->i_lock); | |
3372 | kfree(nfsi->nfs4_acl); | |
3373 | nfsi->nfs4_acl = acl; | |
3374 | spin_unlock(&inode->i_lock); | |
3375 | } | |
3376 | ||
3377 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3378 | { | |
3379 | nfs4_set_cached_acl(inode, NULL); | |
3380 | } | |
3381 | ||
3382 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3383 | { | |
3384 | struct nfs_inode *nfsi = NFS_I(inode); | |
3385 | struct nfs4_cached_acl *acl; | |
3386 | int ret = -ENOENT; | |
3387 | ||
3388 | spin_lock(&inode->i_lock); | |
3389 | acl = nfsi->nfs4_acl; | |
3390 | if (acl == NULL) | |
3391 | goto out; | |
3392 | if (buf == NULL) /* user is just asking for length */ | |
3393 | goto out_len; | |
3394 | if (acl->cached == 0) | |
3395 | goto out; | |
3396 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3397 | if (acl->len > buflen) | |
3398 | goto out; | |
3399 | memcpy(buf, acl->data, acl->len); | |
3400 | out_len: | |
3401 | ret = acl->len; | |
3402 | out: | |
3403 | spin_unlock(&inode->i_lock); | |
3404 | return ret; | |
3405 | } | |
3406 | ||
3407 | static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len) | |
3408 | { | |
3409 | struct nfs4_cached_acl *acl; | |
3410 | ||
3411 | if (buf && acl_len <= PAGE_SIZE) { | |
3412 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); | |
3413 | if (acl == NULL) | |
3414 | goto out; | |
3415 | acl->cached = 1; | |
3416 | memcpy(acl->data, buf, acl_len); | |
3417 | } else { | |
3418 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3419 | if (acl == NULL) | |
3420 | goto out; | |
3421 | acl->cached = 0; | |
3422 | } | |
3423 | acl->len = acl_len; | |
3424 | out: | |
3425 | nfs4_set_cached_acl(inode, acl); | |
3426 | } | |
3427 | ||
16b4289c | 3428 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3429 | { |
aa1870af BF |
3430 | struct page *pages[NFS4ACL_MAXPAGES]; |
3431 | struct nfs_getaclargs args = { | |
3432 | .fh = NFS_FH(inode), | |
3433 | .acl_pages = pages, | |
3434 | .acl_len = buflen, | |
3435 | }; | |
663c79b3 BH |
3436 | struct nfs_getaclres res = { |
3437 | .acl_len = buflen, | |
3438 | }; | |
e50a1c2e | 3439 | void *resp_buf; |
aa1870af BF |
3440 | struct rpc_message msg = { |
3441 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3442 | .rpc_argp = &args, | |
663c79b3 | 3443 | .rpc_resp = &res, |
aa1870af | 3444 | }; |
e50a1c2e | 3445 | struct page *localpage = NULL; |
aa1870af BF |
3446 | int ret; |
3447 | ||
e50a1c2e BF |
3448 | if (buflen < PAGE_SIZE) { |
3449 | /* As long as we're doing a round trip to the server anyway, | |
3450 | * let's be prepared for a page of acl data. */ | |
3451 | localpage = alloc_page(GFP_KERNEL); | |
3452 | resp_buf = page_address(localpage); | |
3453 | if (localpage == NULL) | |
3454 | return -ENOMEM; | |
3455 | args.acl_pages[0] = localpage; | |
3456 | args.acl_pgbase = 0; | |
663c79b3 | 3457 | args.acl_len = PAGE_SIZE; |
e50a1c2e BF |
3458 | } else { |
3459 | resp_buf = buf; | |
3460 | buf_to_pages(buf, buflen, args.acl_pages, &args.acl_pgbase); | |
3461 | } | |
e73b83f2 | 3462 | ret = nfs4_call_sync(NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
e50a1c2e BF |
3463 | if (ret) |
3464 | goto out_free; | |
663c79b3 BH |
3465 | if (res.acl_len > args.acl_len) |
3466 | nfs4_write_cached_acl(inode, NULL, res.acl_len); | |
e50a1c2e | 3467 | else |
663c79b3 | 3468 | nfs4_write_cached_acl(inode, resp_buf, res.acl_len); |
e50a1c2e BF |
3469 | if (buf) { |
3470 | ret = -ERANGE; | |
663c79b3 | 3471 | if (res.acl_len > buflen) |
e50a1c2e BF |
3472 | goto out_free; |
3473 | if (localpage) | |
663c79b3 | 3474 | memcpy(buf, resp_buf, res.acl_len); |
e50a1c2e | 3475 | } |
663c79b3 | 3476 | ret = res.acl_len; |
e50a1c2e BF |
3477 | out_free: |
3478 | if (localpage) | |
3479 | __free_page(localpage); | |
aa1870af BF |
3480 | return ret; |
3481 | } | |
3482 | ||
16b4289c TM |
3483 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3484 | { | |
3485 | struct nfs4_exception exception = { }; | |
3486 | ssize_t ret; | |
3487 | do { | |
3488 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3489 | if (ret >= 0) | |
3490 | break; | |
3491 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3492 | } while (exception.retry); | |
3493 | return ret; | |
3494 | } | |
3495 | ||
e50a1c2e BF |
3496 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3497 | { | |
3498 | struct nfs_server *server = NFS_SERVER(inode); | |
3499 | int ret; | |
3500 | ||
3501 | if (!nfs4_server_supports_acls(server)) | |
3502 | return -EOPNOTSUPP; | |
3503 | ret = nfs_revalidate_inode(server, inode); | |
3504 | if (ret < 0) | |
3505 | return ret; | |
08a22b39 AK |
3506 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
3507 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
3508 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
3509 | if (ret != -ENOENT) | |
3510 | return ret; | |
3511 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3512 | } | |
3513 | ||
16b4289c | 3514 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3515 | { |
3516 | struct nfs_server *server = NFS_SERVER(inode); | |
3517 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3518 | struct nfs_setaclargs arg = { | |
3519 | .fh = NFS_FH(inode), | |
3520 | .acl_pages = pages, | |
3521 | .acl_len = buflen, | |
3522 | }; | |
73c403a9 | 3523 | struct nfs_setaclres res; |
4b580ee3 BF |
3524 | struct rpc_message msg = { |
3525 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3526 | .rpc_argp = &arg, | |
73c403a9 | 3527 | .rpc_resp = &res, |
4b580ee3 | 3528 | }; |
e9e3d724 | 3529 | int ret, i; |
4b580ee3 BF |
3530 | |
3531 | if (!nfs4_server_supports_acls(server)) | |
3532 | return -EOPNOTSUPP; | |
e9e3d724 NH |
3533 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
3534 | if (i < 0) | |
3535 | return i; | |
642ac549 | 3536 | nfs_inode_return_delegation(inode); |
e73b83f2 | 3537 | ret = nfs4_call_sync(server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
3538 | |
3539 | /* | |
3540 | * Free each page after tx, so the only ref left is | |
3541 | * held by the network stack | |
3542 | */ | |
3543 | for (; i > 0; i--) | |
3544 | put_page(pages[i-1]); | |
3545 | ||
08a22b39 AK |
3546 | /* |
3547 | * Acl update can result in inode attribute update. | |
3548 | * so mark the attribute cache invalid. | |
3549 | */ | |
3550 | spin_lock(&inode->i_lock); | |
3551 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
3552 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
3553 | nfs_access_zap_cache(inode); |
3554 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3555 | return ret; |
3556 | } | |
3557 | ||
16b4289c TM |
3558 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3559 | { | |
3560 | struct nfs4_exception exception = { }; | |
3561 | int err; | |
3562 | do { | |
3563 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3564 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3565 | &exception); | |
3566 | } while (exception.retry); | |
3567 | return err; | |
3568 | } | |
3569 | ||
1da177e4 | 3570 | static int |
aa5190d0 | 3571 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 3572 | { |
aa5190d0 TM |
3573 | struct nfs_client *clp = server->nfs_client; |
3574 | ||
3575 | if (task->tk_status >= 0) | |
1da177e4 LT |
3576 | return 0; |
3577 | switch(task->tk_status) { | |
9e33bed5 TM |
3578 | case -NFS4ERR_ADMIN_REVOKED: |
3579 | case -NFS4ERR_BAD_STATEID: | |
3580 | case -NFS4ERR_OPENMODE: | |
3581 | if (state == NULL) | |
3582 | break; | |
0400a6b0 TM |
3583 | nfs4_schedule_stateid_recovery(server, state); |
3584 | goto wait_on_recovery; | |
1da177e4 | 3585 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 3586 | case -NFS4ERR_STALE_CLIENTID: |
1da177e4 | 3587 | case -NFS4ERR_EXPIRED: |
0400a6b0 TM |
3588 | nfs4_schedule_lease_recovery(clp); |
3589 | goto wait_on_recovery; | |
4745e315 AA |
3590 | #if defined(CONFIG_NFS_V4_1) |
3591 | case -NFS4ERR_BADSESSION: | |
3592 | case -NFS4ERR_BADSLOT: | |
3593 | case -NFS4ERR_BAD_HIGH_SLOT: | |
3594 | case -NFS4ERR_DEADSESSION: | |
3595 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
3596 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
3597 | case -NFS4ERR_SEQ_MISORDERED: | |
3598 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
3599 | task->tk_status); | |
0400a6b0 | 3600 | nfs4_schedule_session_recovery(clp->cl_session); |
4745e315 AA |
3601 | task->tk_status = 0; |
3602 | return -EAGAIN; | |
3603 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 3604 | case -NFS4ERR_DELAY: |
aa5190d0 | 3605 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 3606 | case -NFS4ERR_GRACE: |
2c643488 | 3607 | case -EKEYEXPIRED: |
1da177e4 LT |
3608 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
3609 | task->tk_status = 0; | |
3610 | return -EAGAIN; | |
3611 | case -NFS4ERR_OLD_STATEID: | |
3612 | task->tk_status = 0; | |
3613 | return -EAGAIN; | |
3614 | } | |
3615 | task->tk_status = nfs4_map_errors(task->tk_status); | |
3616 | return 0; | |
0400a6b0 | 3617 | wait_on_recovery: |
a2c0b9e2 | 3618 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
3619 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
3620 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
3621 | task->tk_status = 0; | |
3622 | return -EAGAIN; | |
1da177e4 LT |
3623 | } |
3624 | ||
bb8b27e5 TM |
3625 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
3626 | unsigned short port, struct rpc_cred *cred, | |
3627 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
3628 | { |
3629 | nfs4_verifier sc_verifier; | |
3630 | struct nfs4_setclientid setclientid = { | |
3631 | .sc_verifier = &sc_verifier, | |
3632 | .sc_prog = program, | |
f4eecd5d | 3633 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
3634 | }; |
3635 | struct rpc_message msg = { | |
3636 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
3637 | .rpc_argp = &setclientid, | |
bb8b27e5 | 3638 | .rpc_resp = res, |
286d7d6a | 3639 | .rpc_cred = cred, |
1da177e4 | 3640 | }; |
bc4785cd | 3641 | __be32 *p; |
1da177e4 LT |
3642 | int loop = 0; |
3643 | int status; | |
3644 | ||
bc4785cd | 3645 | p = (__be32*)sc_verifier.data; |
1da177e4 LT |
3646 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); |
3647 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
3648 | ||
3649 | for(;;) { | |
3650 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, | |
69dd716c | 3651 | sizeof(setclientid.sc_name), "%s/%s %s %s %u", |
d4d3c507 CL |
3652 | clp->cl_ipaddr, |
3653 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3654 | RPC_DISPLAY_ADDR), | |
69dd716c TM |
3655 | rpc_peeraddr2str(clp->cl_rpcclient, |
3656 | RPC_DISPLAY_PROTO), | |
78ea323b | 3657 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
1da177e4 LT |
3658 | clp->cl_id_uniquifier); |
3659 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
d4d3c507 CL |
3660 | sizeof(setclientid.sc_netid), |
3661 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3662 | RPC_DISPLAY_NETID)); | |
1da177e4 | 3663 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 3664 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
3665 | clp->cl_ipaddr, port >> 8, port & 255); |
3666 | ||
3667 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3668 | if (status != -NFS4ERR_CLID_INUSE) | |
3669 | break; | |
3670 | if (signalled()) | |
3671 | break; | |
3672 | if (loop++ & 1) | |
611c96c8 | 3673 | ssleep(clp->cl_lease_time / HZ + 1); |
1da177e4 LT |
3674 | else |
3675 | if (++clp->cl_id_uniquifier == 0) | |
3676 | break; | |
3677 | } | |
3678 | return status; | |
3679 | } | |
3680 | ||
bb8b27e5 TM |
3681 | static int _nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
3682 | struct nfs4_setclientid_res *arg, | |
3683 | struct rpc_cred *cred) | |
1da177e4 LT |
3684 | { |
3685 | struct nfs_fsinfo fsinfo; | |
3686 | struct rpc_message msg = { | |
3687 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 3688 | .rpc_argp = arg, |
1da177e4 | 3689 | .rpc_resp = &fsinfo, |
286d7d6a | 3690 | .rpc_cred = cred, |
1da177e4 LT |
3691 | }; |
3692 | unsigned long now; | |
3693 | int status; | |
3694 | ||
3695 | now = jiffies; | |
3696 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3697 | if (status == 0) { | |
3698 | spin_lock(&clp->cl_lock); | |
3699 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
3700 | clp->cl_last_renewal = now; | |
3701 | spin_unlock(&clp->cl_lock); | |
3702 | } | |
3703 | return status; | |
3704 | } | |
3705 | ||
bb8b27e5 TM |
3706 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
3707 | struct nfs4_setclientid_res *arg, | |
3708 | struct rpc_cred *cred) | |
51581f3b | 3709 | { |
77e03677 | 3710 | long timeout = 0; |
51581f3b TM |
3711 | int err; |
3712 | do { | |
bb8b27e5 | 3713 | err = _nfs4_proc_setclientid_confirm(clp, arg, cred); |
51581f3b TM |
3714 | switch (err) { |
3715 | case 0: | |
3716 | return err; | |
3717 | case -NFS4ERR_RESOURCE: | |
3718 | /* The IBM lawyers misread another document! */ | |
3719 | case -NFS4ERR_DELAY: | |
3720 | err = nfs4_delay(clp->cl_rpcclient, &timeout); | |
3721 | } | |
3722 | } while (err == 0); | |
3723 | return err; | |
3724 | } | |
3725 | ||
fe650407 TM |
3726 | struct nfs4_delegreturndata { |
3727 | struct nfs4_delegreturnargs args; | |
fa178f29 | 3728 | struct nfs4_delegreturnres res; |
fe650407 TM |
3729 | struct nfs_fh fh; |
3730 | nfs4_stateid stateid; | |
26e976a8 | 3731 | unsigned long timestamp; |
fa178f29 | 3732 | struct nfs_fattr fattr; |
fe650407 TM |
3733 | int rpc_status; |
3734 | }; | |
3735 | ||
fe650407 TM |
3736 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
3737 | { | |
3738 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 3739 | |
14516c3a TM |
3740 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
3741 | return; | |
938e1010 | 3742 | |
79708861 RL |
3743 | switch (task->tk_status) { |
3744 | case -NFS4ERR_STALE_STATEID: | |
3745 | case -NFS4ERR_EXPIRED: | |
3746 | case 0: | |
fa178f29 | 3747 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
3748 | break; |
3749 | default: | |
3750 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
3751 | -EAGAIN) { | |
3752 | nfs_restart_rpc(task, data->res.server->nfs_client); | |
3753 | return; | |
3754 | } | |
3755 | } | |
3756 | data->rpc_status = task->tk_status; | |
fe650407 TM |
3757 | } |
3758 | ||
3759 | static void nfs4_delegreturn_release(void *calldata) | |
3760 | { | |
fe650407 TM |
3761 | kfree(calldata); |
3762 | } | |
3763 | ||
938e1010 AA |
3764 | #if defined(CONFIG_NFS_V4_1) |
3765 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
3766 | { | |
3767 | struct nfs4_delegreturndata *d_data; | |
3768 | ||
3769 | d_data = (struct nfs4_delegreturndata *)data; | |
3770 | ||
035168ab | 3771 | if (nfs4_setup_sequence(d_data->res.server, |
938e1010 AA |
3772 | &d_data->args.seq_args, |
3773 | &d_data->res.seq_res, 1, task)) | |
3774 | return; | |
3775 | rpc_call_start(task); | |
3776 | } | |
3777 | #endif /* CONFIG_NFS_V4_1 */ | |
3778 | ||
c8d149f3 | 3779 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
3780 | #if defined(CONFIG_NFS_V4_1) |
3781 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
3782 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
3783 | .rpc_call_done = nfs4_delegreturn_done, |
3784 | .rpc_release = nfs4_delegreturn_release, | |
3785 | }; | |
3786 | ||
e6f81075 | 3787 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
3788 | { |
3789 | struct nfs4_delegreturndata *data; | |
fa178f29 | 3790 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 3791 | struct rpc_task *task; |
5138fde0 TM |
3792 | struct rpc_message msg = { |
3793 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
3794 | .rpc_cred = cred, | |
3795 | }; | |
c970aa85 TM |
3796 | struct rpc_task_setup task_setup_data = { |
3797 | .rpc_client = server->client, | |
5138fde0 | 3798 | .rpc_message = &msg, |
c970aa85 TM |
3799 | .callback_ops = &nfs4_delegreturn_ops, |
3800 | .flags = RPC_TASK_ASYNC, | |
3801 | }; | |
e6f81075 | 3802 | int status = 0; |
fe650407 | 3803 | |
8535b2be | 3804 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
3805 | if (data == NULL) |
3806 | return -ENOMEM; | |
3807 | data->args.fhandle = &data->fh; | |
3808 | data->args.stateid = &data->stateid; | |
fa178f29 | 3809 | data->args.bitmask = server->attr_bitmask; |
fe650407 TM |
3810 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
3811 | memcpy(&data->stateid, stateid, sizeof(data->stateid)); | |
fa178f29 TM |
3812 | data->res.fattr = &data->fattr; |
3813 | data->res.server = server; | |
5138fde0 | 3814 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 3815 | data->timestamp = jiffies; |
fe650407 TM |
3816 | data->rpc_status = 0; |
3817 | ||
c970aa85 | 3818 | task_setup_data.callback_data = data; |
1174dd1f TM |
3819 | msg.rpc_argp = &data->args; |
3820 | msg.rpc_resp = &data->res; | |
c970aa85 | 3821 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 3822 | if (IS_ERR(task)) |
fe650407 | 3823 | return PTR_ERR(task); |
e6f81075 TM |
3824 | if (!issync) |
3825 | goto out; | |
fe650407 | 3826 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
3827 | if (status != 0) |
3828 | goto out; | |
3829 | status = data->rpc_status; | |
3830 | if (status != 0) | |
3831 | goto out; | |
3832 | nfs_refresh_inode(inode, &data->fattr); | |
3833 | out: | |
e6b3c4db | 3834 | rpc_put_task(task); |
fe650407 | 3835 | return status; |
1da177e4 LT |
3836 | } |
3837 | ||
e6f81075 | 3838 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
3839 | { |
3840 | struct nfs_server *server = NFS_SERVER(inode); | |
3841 | struct nfs4_exception exception = { }; | |
3842 | int err; | |
3843 | do { | |
e6f81075 | 3844 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
3845 | switch (err) { |
3846 | case -NFS4ERR_STALE_STATEID: | |
3847 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
3848 | case 0: |
3849 | return 0; | |
3850 | } | |
3851 | err = nfs4_handle_exception(server, err, &exception); | |
3852 | } while (exception.retry); | |
3853 | return err; | |
3854 | } | |
3855 | ||
3856 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
3857 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
3858 | ||
3859 | /* | |
3860 | * sleep, with exponential backoff, and retry the LOCK operation. | |
3861 | */ | |
3862 | static unsigned long | |
3863 | nfs4_set_lock_task_retry(unsigned long timeout) | |
3864 | { | |
150030b7 | 3865 | schedule_timeout_killable(timeout); |
1da177e4 LT |
3866 | timeout <<= 1; |
3867 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
3868 | return NFS4_LOCK_MAXTIMEOUT; | |
3869 | return timeout; | |
3870 | } | |
3871 | ||
1da177e4 LT |
3872 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
3873 | { | |
3874 | struct inode *inode = state->inode; | |
3875 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 3876 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 3877 | struct nfs_lockt_args arg = { |
1da177e4 | 3878 | .fh = NFS_FH(inode), |
911d1aaf | 3879 | .fl = request, |
1da177e4 | 3880 | }; |
911d1aaf TM |
3881 | struct nfs_lockt_res res = { |
3882 | .denied = request, | |
1da177e4 LT |
3883 | }; |
3884 | struct rpc_message msg = { | |
3885 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
3886 | .rpc_argp = &arg, | |
3887 | .rpc_resp = &res, | |
3888 | .rpc_cred = state->owner->so_cred, | |
3889 | }; | |
1da177e4 LT |
3890 | struct nfs4_lock_state *lsp; |
3891 | int status; | |
3892 | ||
911d1aaf | 3893 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
3894 | status = nfs4_set_lock_state(state, request); |
3895 | if (status != 0) | |
3896 | goto out; | |
3897 | lsp = request->fl_u.nfs4_fl.owner; | |
9f958ab8 | 3898 | arg.lock_owner.id = lsp->ls_id.id; |
d035c36c | 3899 | arg.lock_owner.s_dev = server->s_dev; |
e73b83f2 | 3900 | status = nfs4_call_sync(server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
3901 | switch (status) { |
3902 | case 0: | |
3903 | request->fl_type = F_UNLCK; | |
3904 | break; | |
3905 | case -NFS4ERR_DENIED: | |
3906 | status = 0; | |
1da177e4 | 3907 | } |
70cc6487 | 3908 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 3909 | out: |
1da177e4 LT |
3910 | return status; |
3911 | } | |
3912 | ||
3913 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3914 | { | |
3915 | struct nfs4_exception exception = { }; | |
3916 | int err; | |
3917 | ||
3918 | do { | |
3919 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
3920 | _nfs4_proc_getlk(state, cmd, request), | |
3921 | &exception); | |
3922 | } while (exception.retry); | |
3923 | return err; | |
3924 | } | |
3925 | ||
3926 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
3927 | { | |
3928 | int res = 0; | |
3929 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
3930 | case FL_POSIX: | |
3931 | res = posix_lock_file_wait(file, fl); | |
3932 | break; | |
3933 | case FL_FLOCK: | |
3934 | res = flock_lock_file_wait(file, fl); | |
3935 | break; | |
3936 | default: | |
3937 | BUG(); | |
3938 | } | |
1da177e4 LT |
3939 | return res; |
3940 | } | |
3941 | ||
faf5f49c | 3942 | struct nfs4_unlockdata { |
911d1aaf TM |
3943 | struct nfs_locku_args arg; |
3944 | struct nfs_locku_res res; | |
faf5f49c TM |
3945 | struct nfs4_lock_state *lsp; |
3946 | struct nfs_open_context *ctx; | |
911d1aaf TM |
3947 | struct file_lock fl; |
3948 | const struct nfs_server *server; | |
26e976a8 | 3949 | unsigned long timestamp; |
faf5f49c TM |
3950 | }; |
3951 | ||
911d1aaf TM |
3952 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
3953 | struct nfs_open_context *ctx, | |
3954 | struct nfs4_lock_state *lsp, | |
3955 | struct nfs_seqid *seqid) | |
3956 | { | |
3957 | struct nfs4_unlockdata *p; | |
3958 | struct inode *inode = lsp->ls_state->inode; | |
3959 | ||
8535b2be | 3960 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
3961 | if (p == NULL) |
3962 | return NULL; | |
3963 | p->arg.fh = NFS_FH(inode); | |
3964 | p->arg.fl = &p->fl; | |
3965 | p->arg.seqid = seqid; | |
c1d51931 | 3966 | p->res.seqid = seqid; |
911d1aaf TM |
3967 | p->arg.stateid = &lsp->ls_stateid; |
3968 | p->lsp = lsp; | |
3969 | atomic_inc(&lsp->ls_count); | |
3970 | /* Ensure we don't close file until we're done freeing locks! */ | |
3971 | p->ctx = get_nfs_open_context(ctx); | |
3972 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
3973 | p->server = NFS_SERVER(inode); | |
3974 | return p; | |
3975 | } | |
3976 | ||
06f814a3 | 3977 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 3978 | { |
963d8fe5 | 3979 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 3980 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
3981 | nfs4_put_lock_state(calldata->lsp); |
3982 | put_nfs_open_context(calldata->ctx); | |
3983 | kfree(calldata); | |
faf5f49c TM |
3984 | } |
3985 | ||
963d8fe5 | 3986 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 3987 | { |
963d8fe5 | 3988 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 3989 | |
14516c3a TM |
3990 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
3991 | return; | |
faf5f49c TM |
3992 | switch (task->tk_status) { |
3993 | case 0: | |
3994 | memcpy(calldata->lsp->ls_stateid.data, | |
911d1aaf | 3995 | calldata->res.stateid.data, |
faf5f49c | 3996 | sizeof(calldata->lsp->ls_stateid.data)); |
26e976a8 | 3997 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 3998 | break; |
9e33bed5 TM |
3999 | case -NFS4ERR_BAD_STATEID: |
4000 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4001 | case -NFS4ERR_STALE_STATEID: |
4002 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4003 | break; |
4004 | default: | |
9e33bed5 | 4005 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
0110ee15 | 4006 | nfs_restart_rpc(task, |
d61e612a | 4007 | calldata->server->nfs_client); |
faf5f49c | 4008 | } |
faf5f49c TM |
4009 | } |
4010 | ||
4ce70ada | 4011 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4012 | { |
4ce70ada | 4013 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4014 | |
911d1aaf | 4015 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
4016 | return; |
4017 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
4018 | /* Note: exit _without_ running nfs4_locku_done */ |
4019 | task->tk_action = NULL; | |
faf5f49c TM |
4020 | return; |
4021 | } | |
26e976a8 | 4022 | calldata->timestamp = jiffies; |
035168ab | 4023 | if (nfs4_setup_sequence(calldata->server, |
a893693c AA |
4024 | &calldata->arg.seq_args, |
4025 | &calldata->res.seq_res, 1, task)) | |
4026 | return; | |
5138fde0 | 4027 | rpc_call_start(task); |
faf5f49c TM |
4028 | } |
4029 | ||
963d8fe5 | 4030 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4031 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4032 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4033 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4034 | }; |
4035 | ||
a5d16a4d TM |
4036 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4037 | struct nfs_open_context *ctx, | |
4038 | struct nfs4_lock_state *lsp, | |
4039 | struct nfs_seqid *seqid) | |
4040 | { | |
4041 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4042 | struct rpc_message msg = { |
4043 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4044 | .rpc_cred = ctx->cred, | |
4045 | }; | |
c970aa85 TM |
4046 | struct rpc_task_setup task_setup_data = { |
4047 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4048 | .rpc_message = &msg, |
c970aa85 | 4049 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4050 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4051 | .flags = RPC_TASK_ASYNC, |
4052 | }; | |
a5d16a4d | 4053 | |
137d6aca FF |
4054 | /* Ensure this is an unlock - when canceling a lock, the |
4055 | * canceled lock is passed in, and it won't be an unlock. | |
4056 | */ | |
4057 | fl->fl_type = F_UNLCK; | |
4058 | ||
a5d16a4d TM |
4059 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4060 | if (data == NULL) { | |
4061 | nfs_free_seqid(seqid); | |
4062 | return ERR_PTR(-ENOMEM); | |
4063 | } | |
4064 | ||
1174dd1f TM |
4065 | msg.rpc_argp = &data->arg; |
4066 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4067 | task_setup_data.callback_data = data; |
4068 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4069 | } |
4070 | ||
faf5f49c TM |
4071 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4072 | { | |
19e03c57 | 4073 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 4074 | struct nfs_seqid *seqid; |
1da177e4 | 4075 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4076 | struct rpc_task *task; |
4077 | int status = 0; | |
536ff0f8 | 4078 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4079 | |
8d0a8a9d | 4080 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4081 | /* Unlock _before_ we do the RPC call */ |
4082 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
4083 | down_read(&nfsi->rwsem); |
4084 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4085 | up_read(&nfsi->rwsem); | |
9b073574 | 4086 | goto out; |
19e03c57 TM |
4087 | } |
4088 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 4089 | if (status != 0) |
9b073574 TM |
4090 | goto out; |
4091 | /* Is this a delegated lock? */ | |
4092 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
4093 | goto out; | |
8d0a8a9d | 4094 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 4095 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4096 | status = -ENOMEM; |
911d1aaf | 4097 | if (seqid == NULL) |
9b073574 | 4098 | goto out; |
cd3758e3 | 4099 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4100 | status = PTR_ERR(task); |
4101 | if (IS_ERR(task)) | |
9b073574 | 4102 | goto out; |
a5d16a4d | 4103 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4104 | rpc_put_task(task); |
9b073574 | 4105 | out: |
536ff0f8 | 4106 | request->fl_flags = fl_flags; |
1da177e4 LT |
4107 | return status; |
4108 | } | |
4109 | ||
a5d16a4d TM |
4110 | struct nfs4_lockdata { |
4111 | struct nfs_lock_args arg; | |
4112 | struct nfs_lock_res res; | |
4113 | struct nfs4_lock_state *lsp; | |
4114 | struct nfs_open_context *ctx; | |
4115 | struct file_lock fl; | |
26e976a8 | 4116 | unsigned long timestamp; |
a5d16a4d TM |
4117 | int rpc_status; |
4118 | int cancelled; | |
66179efe | 4119 | struct nfs_server *server; |
a5d16a4d TM |
4120 | }; |
4121 | ||
4122 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4123 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4124 | gfp_t gfp_mask) | |
1da177e4 | 4125 | { |
a5d16a4d TM |
4126 | struct nfs4_lockdata *p; |
4127 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4128 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4129 | |
8535b2be | 4130 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4131 | if (p == NULL) |
4132 | return NULL; | |
4133 | ||
4134 | p->arg.fh = NFS_FH(inode); | |
4135 | p->arg.fl = &p->fl; | |
8535b2be | 4136 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4137 | if (p->arg.open_seqid == NULL) |
4138 | goto out_free; | |
8535b2be | 4139 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4140 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4141 | goto out_free_seqid; |
a5d16a4d | 4142 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4143 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 4144 | p->arg.lock_owner.id = lsp->ls_id.id; |
d035c36c | 4145 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4146 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4147 | p->lsp = lsp; |
66179efe | 4148 | p->server = server; |
a5d16a4d TM |
4149 | atomic_inc(&lsp->ls_count); |
4150 | p->ctx = get_nfs_open_context(ctx); | |
4151 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4152 | return p; | |
2f74c0a0 TM |
4153 | out_free_seqid: |
4154 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4155 | out_free: |
4156 | kfree(p); | |
4157 | return NULL; | |
4158 | } | |
4159 | ||
4160 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4161 | { | |
4162 | struct nfs4_lockdata *data = calldata; | |
4163 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4164 | |
3110ff80 | 4165 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
4166 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
4167 | return; | |
a5d16a4d TM |
4168 | /* Do we need to do an open_to_lock_owner? */ |
4169 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
4170 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
4171 | return; | |
a5d16a4d TM |
4172 | data->arg.open_stateid = &state->stateid; |
4173 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4174 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4175 | } else |
4176 | data->arg.new_lock_owner = 0; | |
26e976a8 | 4177 | data->timestamp = jiffies; |
035168ab TM |
4178 | if (nfs4_setup_sequence(data->server, |
4179 | &data->arg.seq_args, | |
66179efe AA |
4180 | &data->res.seq_res, 1, task)) |
4181 | return; | |
5138fde0 | 4182 | rpc_call_start(task); |
3110ff80 | 4183 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
a5d16a4d TM |
4184 | } |
4185 | ||
b257957e AB |
4186 | static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata) |
4187 | { | |
4188 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
4189 | nfs4_lock_prepare(task, calldata); | |
4190 | } | |
4191 | ||
a5d16a4d TM |
4192 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4193 | { | |
4194 | struct nfs4_lockdata *data = calldata; | |
4195 | ||
3110ff80 | 4196 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4197 | |
14516c3a TM |
4198 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4199 | return; | |
66179efe | 4200 | |
a5d16a4d | 4201 | data->rpc_status = task->tk_status; |
a5d16a4d | 4202 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4203 | if (data->rpc_status == 0) |
4204 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4205 | else | |
4206 | goto out; | |
4207 | } | |
4208 | if (data->rpc_status == 0) { | |
4209 | memcpy(data->lsp->ls_stateid.data, data->res.stateid.data, | |
4210 | sizeof(data->lsp->ls_stateid.data)); | |
4211 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; | |
88be9f99 | 4212 | renew_lease(NFS_SERVER(data->ctx->path.dentry->d_inode), data->timestamp); |
a5d16a4d | 4213 | } |
a5d16a4d | 4214 | out: |
3110ff80 | 4215 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4216 | } |
4217 | ||
4218 | static void nfs4_lock_release(void *calldata) | |
4219 | { | |
4220 | struct nfs4_lockdata *data = calldata; | |
4221 | ||
3110ff80 | 4222 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4223 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4224 | if (data->cancelled != 0) { |
4225 | struct rpc_task *task; | |
4226 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4227 | data->arg.lock_seqid); | |
4228 | if (!IS_ERR(task)) | |
bf294b41 | 4229 | rpc_put_task_async(task); |
3110ff80 | 4230 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4231 | } else |
4232 | nfs_free_seqid(data->arg.lock_seqid); | |
4233 | nfs4_put_lock_state(data->lsp); | |
4234 | put_nfs_open_context(data->ctx); | |
4235 | kfree(data); | |
3110ff80 | 4236 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4237 | } |
4238 | ||
4239 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4240 | .rpc_call_prepare = nfs4_lock_prepare, | |
4241 | .rpc_call_done = nfs4_lock_done, | |
4242 | .rpc_release = nfs4_lock_release, | |
4243 | }; | |
4244 | ||
b257957e AB |
4245 | static const struct rpc_call_ops nfs4_recover_lock_ops = { |
4246 | .rpc_call_prepare = nfs4_recover_lock_prepare, | |
4247 | .rpc_call_done = nfs4_lock_done, | |
4248 | .rpc_release = nfs4_lock_release, | |
4249 | }; | |
4250 | ||
2bee72a6 TM |
4251 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4252 | { | |
2bee72a6 TM |
4253 | switch (error) { |
4254 | case -NFS4ERR_ADMIN_REVOKED: | |
4255 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4256 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 TM |
4257 | if (new_lock_owner != 0 || |
4258 | (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) | |
ecac799a | 4259 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4260 | break; |
4261 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4262 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4263 | case -NFS4ERR_EXPIRED: |
4264 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4265 | }; |
4266 | } | |
4267 | ||
afe6c27c | 4268 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4269 | { |
4270 | struct nfs4_lockdata *data; | |
4271 | struct rpc_task *task; | |
5138fde0 TM |
4272 | struct rpc_message msg = { |
4273 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4274 | .rpc_cred = state->owner->so_cred, | |
4275 | }; | |
c970aa85 TM |
4276 | struct rpc_task_setup task_setup_data = { |
4277 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4278 | .rpc_message = &msg, |
c970aa85 | 4279 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4280 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4281 | .flags = RPC_TASK_ASYNC, |
4282 | }; | |
a5d16a4d TM |
4283 | int ret; |
4284 | ||
3110ff80 | 4285 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4286 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4287 | fl->fl_u.nfs4_fl.owner, |
4288 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4289 | if (data == NULL) |
4290 | return -ENOMEM; | |
4291 | if (IS_SETLKW(cmd)) | |
4292 | data->arg.block = 1; | |
b257957e AB |
4293 | if (recovery_type > NFS_LOCK_NEW) { |
4294 | if (recovery_type == NFS_LOCK_RECLAIM) | |
afe6c27c | 4295 | data->arg.reclaim = NFS_LOCK_RECLAIM; |
b257957e AB |
4296 | task_setup_data.callback_ops = &nfs4_recover_lock_ops; |
4297 | } | |
1174dd1f TM |
4298 | msg.rpc_argp = &data->arg; |
4299 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4300 | task_setup_data.callback_data = data; |
4301 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 4302 | if (IS_ERR(task)) |
a5d16a4d | 4303 | return PTR_ERR(task); |
a5d16a4d TM |
4304 | ret = nfs4_wait_for_completion_rpc_task(task); |
4305 | if (ret == 0) { | |
4306 | ret = data->rpc_status; | |
2bee72a6 TM |
4307 | if (ret) |
4308 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4309 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4310 | } else |
4311 | data->cancelled = 1; | |
e6b3c4db | 4312 | rpc_put_task(task); |
3110ff80 | 4313 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4314 | return ret; |
1da177e4 LT |
4315 | } |
4316 | ||
4317 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4318 | { | |
202b50dc TM |
4319 | struct nfs_server *server = NFS_SERVER(state->inode); |
4320 | struct nfs4_exception exception = { }; | |
4321 | int err; | |
4322 | ||
4323 | do { | |
42a2d13e TM |
4324 | /* Cache the lock if possible... */ |
4325 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4326 | return 0; | |
afe6c27c | 4327 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4328 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4329 | break; |
4330 | nfs4_handle_exception(server, err, &exception); | |
4331 | } while (exception.retry); | |
4332 | return err; | |
1da177e4 LT |
4333 | } |
4334 | ||
4335 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4336 | { | |
202b50dc TM |
4337 | struct nfs_server *server = NFS_SERVER(state->inode); |
4338 | struct nfs4_exception exception = { }; | |
4339 | int err; | |
4340 | ||
6bfc93ef TM |
4341 | err = nfs4_set_lock_state(state, request); |
4342 | if (err != 0) | |
4343 | return err; | |
202b50dc | 4344 | do { |
42a2d13e TM |
4345 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4346 | return 0; | |
afe6c27c | 4347 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4348 | switch (err) { |
4349 | default: | |
4350 | goto out; | |
4351 | case -NFS4ERR_GRACE: | |
4352 | case -NFS4ERR_DELAY: | |
4353 | nfs4_handle_exception(server, err, &exception); | |
4354 | err = 0; | |
4355 | } | |
202b50dc | 4356 | } while (exception.retry); |
a9ed2e25 | 4357 | out: |
202b50dc | 4358 | return err; |
1da177e4 LT |
4359 | } |
4360 | ||
4361 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4362 | { | |
19e03c57 | 4363 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4364 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 4365 | int status = -ENOLCK; |
1da177e4 | 4366 | |
8e469ebd TM |
4367 | if ((fl_flags & FL_POSIX) && |
4368 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
4369 | goto out; | |
6bfc93ef | 4370 | /* Is this a delegated open? */ |
6bfc93ef TM |
4371 | status = nfs4_set_lock_state(state, request); |
4372 | if (status != 0) | |
4373 | goto out; | |
01c3b861 TM |
4374 | request->fl_flags |= FL_ACCESS; |
4375 | status = do_vfs_lock(request->fl_file, request); | |
4376 | if (status < 0) | |
4377 | goto out; | |
19e03c57 | 4378 | down_read(&nfsi->rwsem); |
01c3b861 | 4379 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4380 | /* Yes: cache locks! */ |
01c3b861 | 4381 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4382 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4383 | status = do_vfs_lock(request->fl_file, request); | |
4384 | goto out_unlock; | |
01c3b861 | 4385 | } |
afe6c27c | 4386 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 4387 | if (status != 0) |
01c3b861 | 4388 | goto out_unlock; |
6bfc93ef | 4389 | /* Note: we always want to sleep here! */ |
01c3b861 | 4390 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4391 | if (do_vfs_lock(request->fl_file, request) < 0) |
3110ff80 | 4392 | printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __func__); |
01c3b861 | 4393 | out_unlock: |
19e03c57 | 4394 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4395 | out: |
4396 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4397 | return status; |
4398 | } | |
4399 | ||
4400 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4401 | { | |
4402 | struct nfs4_exception exception = { }; | |
4403 | int err; | |
4404 | ||
4405 | do { | |
965b5d67 TM |
4406 | err = _nfs4_proc_setlk(state, cmd, request); |
4407 | if (err == -NFS4ERR_DENIED) | |
4408 | err = -EAGAIN; | |
1da177e4 | 4409 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4410 | err, &exception); |
1da177e4 LT |
4411 | } while (exception.retry); |
4412 | return err; | |
4413 | } | |
4414 | ||
4415 | static int | |
4416 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
4417 | { | |
4418 | struct nfs_open_context *ctx; | |
4419 | struct nfs4_state *state; | |
4420 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
4421 | int status; | |
4422 | ||
4423 | /* verify open state */ | |
cd3758e3 | 4424 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
4425 | state = ctx->state; |
4426 | ||
4427 | if (request->fl_start < 0 || request->fl_end < 0) | |
4428 | return -EINVAL; | |
4429 | ||
d953126a TM |
4430 | if (IS_GETLK(cmd)) { |
4431 | if (state != NULL) | |
4432 | return nfs4_proc_getlk(state, F_GETLK, request); | |
4433 | return 0; | |
4434 | } | |
1da177e4 LT |
4435 | |
4436 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
4437 | return -EINVAL; | |
4438 | ||
d953126a TM |
4439 | if (request->fl_type == F_UNLCK) { |
4440 | if (state != NULL) | |
4441 | return nfs4_proc_unlck(state, cmd, request); | |
4442 | return 0; | |
4443 | } | |
1da177e4 | 4444 | |
d953126a TM |
4445 | if (state == NULL) |
4446 | return -ENOLCK; | |
1da177e4 LT |
4447 | do { |
4448 | status = nfs4_proc_setlk(state, cmd, request); | |
4449 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
4450 | break; | |
4451 | timeout = nfs4_set_lock_task_retry(timeout); | |
4452 | status = -ERESTARTSYS; | |
4453 | if (signalled()) | |
4454 | break; | |
4455 | } while(status < 0); | |
1da177e4 LT |
4456 | return status; |
4457 | } | |
4458 | ||
888e694c TM |
4459 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
4460 | { | |
4461 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4462 | struct nfs4_exception exception = { }; | |
4463 | int err; | |
4464 | ||
4465 | err = nfs4_set_lock_state(state, fl); | |
4466 | if (err != 0) | |
4467 | goto out; | |
4468 | do { | |
afe6c27c | 4469 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
4470 | switch (err) { |
4471 | default: | |
4472 | printk(KERN_ERR "%s: unhandled error %d.\n", | |
4473 | __func__, err); | |
4474 | case 0: | |
965b5d67 | 4475 | case -ESTALE: |
d5122201 TM |
4476 | goto out; |
4477 | case -NFS4ERR_EXPIRED: | |
4478 | case -NFS4ERR_STALE_CLIENTID: | |
965b5d67 | 4479 | case -NFS4ERR_STALE_STATEID: |
0400a6b0 TM |
4480 | nfs4_schedule_lease_recovery(server->nfs_client); |
4481 | goto out; | |
74e7bb73 RL |
4482 | case -NFS4ERR_BADSESSION: |
4483 | case -NFS4ERR_BADSLOT: | |
4484 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4485 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4486 | case -NFS4ERR_DEADSESSION: | |
0400a6b0 | 4487 | nfs4_schedule_session_recovery(server->nfs_client->cl_session); |
d5122201 | 4488 | goto out; |
965b5d67 TM |
4489 | case -ERESTARTSYS: |
4490 | /* | |
4491 | * The show must go on: exit, but mark the | |
4492 | * stateid as needing recovery. | |
4493 | */ | |
4494 | case -NFS4ERR_ADMIN_REVOKED: | |
4495 | case -NFS4ERR_BAD_STATEID: | |
4496 | case -NFS4ERR_OPENMODE: | |
0400a6b0 | 4497 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
4498 | err = 0; |
4499 | goto out; | |
168667c4 TM |
4500 | case -EKEYEXPIRED: |
4501 | /* | |
4502 | * User RPCSEC_GSS context has expired. | |
4503 | * We cannot recover this stateid now, so | |
4504 | * skip it and allow recovery thread to | |
4505 | * proceed. | |
4506 | */ | |
4507 | err = 0; | |
4508 | goto out; | |
965b5d67 TM |
4509 | case -ENOMEM: |
4510 | case -NFS4ERR_DENIED: | |
4511 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
4512 | err = 0; | |
4513 | goto out; | |
d5122201 TM |
4514 | case -NFS4ERR_DELAY: |
4515 | break; | |
4516 | } | |
888e694c TM |
4517 | err = nfs4_handle_exception(server, err, &exception); |
4518 | } while (exception.retry); | |
4519 | out: | |
4520 | return err; | |
4521 | } | |
6b3b5496 | 4522 | |
d3c7b7cc TM |
4523 | static void nfs4_release_lockowner_release(void *calldata) |
4524 | { | |
4525 | kfree(calldata); | |
4526 | } | |
4527 | ||
4528 | const struct rpc_call_ops nfs4_release_lockowner_ops = { | |
4529 | .rpc_release = nfs4_release_lockowner_release, | |
4530 | }; | |
4531 | ||
4532 | void nfs4_release_lockowner(const struct nfs4_lock_state *lsp) | |
4533 | { | |
4534 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
4535 | struct nfs_release_lockowner_args *args; | |
4536 | struct rpc_message msg = { | |
4537 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
4538 | }; | |
4539 | ||
4540 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
4541 | return; | |
4542 | args = kmalloc(sizeof(*args), GFP_NOFS); | |
4543 | if (!args) | |
4544 | return; | |
4545 | args->lock_owner.clientid = server->nfs_client->cl_clientid; | |
4546 | args->lock_owner.id = lsp->ls_id.id; | |
d035c36c | 4547 | args->lock_owner.s_dev = server->s_dev; |
d3c7b7cc TM |
4548 | msg.rpc_argp = args; |
4549 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, args); | |
4550 | } | |
4551 | ||
aa1870af BF |
4552 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
4553 | ||
64c2ce8b AK |
4554 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
4555 | const void *buf, size_t buflen, | |
4556 | int flags, int type) | |
6b3b5496 | 4557 | { |
64c2ce8b AK |
4558 | if (strcmp(key, "") != 0) |
4559 | return -EINVAL; | |
4b580ee3 | 4560 | |
64c2ce8b | 4561 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4562 | } |
4563 | ||
64c2ce8b AK |
4564 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
4565 | void *buf, size_t buflen, int type) | |
6b3b5496 | 4566 | { |
64c2ce8b AK |
4567 | if (strcmp(key, "") != 0) |
4568 | return -EINVAL; | |
aa1870af | 4569 | |
64c2ce8b | 4570 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4571 | } |
4572 | ||
64c2ce8b AK |
4573 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
4574 | size_t list_len, const char *name, | |
4575 | size_t name_len, int type) | |
6b3b5496 | 4576 | { |
64c2ce8b | 4577 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 4578 | |
096455a2 BF |
4579 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
4580 | return 0; | |
64c2ce8b AK |
4581 | |
4582 | if (list && len <= list_len) | |
4583 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 4584 | return len; |
6b3b5496 BF |
4585 | } |
4586 | ||
69aaaae1 TM |
4587 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
4588 | { | |
4589 | if (!((fattr->valid & NFS_ATTR_FATTR_FILEID) && | |
4590 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
4591 | (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL))) | |
4592 | return; | |
4593 | ||
4594 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
4595 | NFS_ATTR_FATTR_NLINK; | |
4596 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; | |
4597 | fattr->nlink = 2; | |
4598 | } | |
4599 | ||
56659e99 | 4600 | int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, |
7aaa0b3b | 4601 | struct nfs4_fs_locations *fs_locations, struct page *page) |
683b57b4 TM |
4602 | { |
4603 | struct nfs_server *server = NFS_SERVER(dir); | |
4604 | u32 bitmask[2] = { | |
361e624f MN |
4605 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
4606 | [1] = FATTR4_WORD1_MOUNTED_ON_FILEID, | |
683b57b4 TM |
4607 | }; |
4608 | struct nfs4_fs_locations_arg args = { | |
4609 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 4610 | .name = name, |
683b57b4 TM |
4611 | .page = page, |
4612 | .bitmask = bitmask, | |
4613 | }; | |
22958463 BH |
4614 | struct nfs4_fs_locations_res res = { |
4615 | .fs_locations = fs_locations, | |
4616 | }; | |
683b57b4 TM |
4617 | struct rpc_message msg = { |
4618 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
4619 | .rpc_argp = &args, | |
22958463 | 4620 | .rpc_resp = &res, |
683b57b4 TM |
4621 | }; |
4622 | int status; | |
4623 | ||
3110ff80 | 4624 | dprintk("%s: start\n", __func__); |
c228fd3a | 4625 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 4626 | fs_locations->server = server; |
830b8e33 | 4627 | fs_locations->nlocations = 0; |
e73b83f2 | 4628 | status = nfs4_call_sync(server, &msg, &args.seq_args, &res.seq_res, 0); |
69aaaae1 | 4629 | nfs_fixup_referral_attributes(&fs_locations->fattr); |
3110ff80 | 4630 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
4631 | return status; |
4632 | } | |
4633 | ||
557134a3 | 4634 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
4635 | /* |
4636 | * Check the exchange flags returned by the server for invalid flags, having | |
4637 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
4638 | * DS flags set. | |
4639 | */ | |
4640 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
4641 | { | |
4642 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
4643 | goto out_inval; | |
4644 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
4645 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
4646 | goto out_inval; | |
4647 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
4648 | goto out_inval; | |
4649 | return NFS_OK; | |
4650 | out_inval: | |
4651 | return -NFS4ERR_INVAL; | |
4652 | } | |
4653 | ||
99fe60d0 BH |
4654 | /* |
4655 | * nfs4_proc_exchange_id() | |
4656 | * | |
4657 | * Since the clientid has expired, all compounds using sessions | |
4658 | * associated with the stale clientid will be returning | |
4659 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
4660 | * be in some phase of session reset. | |
4661 | */ | |
4d643d1d | 4662 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
4663 | { |
4664 | nfs4_verifier verifier; | |
4665 | struct nfs41_exchange_id_args args = { | |
4666 | .client = clp, | |
357f54d6 | 4667 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
4668 | }; |
4669 | struct nfs41_exchange_id_res res = { | |
4670 | .client = clp, | |
4671 | }; | |
4672 | int status; | |
4673 | struct rpc_message msg = { | |
4674 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
4675 | .rpc_argp = &args, | |
4676 | .rpc_resp = &res, | |
4677 | .rpc_cred = cred, | |
4678 | }; | |
4679 | __be32 *p; | |
4680 | ||
4681 | dprintk("--> %s\n", __func__); | |
4682 | BUG_ON(clp == NULL); | |
a7b72103 | 4683 | |
99fe60d0 BH |
4684 | p = (u32 *)verifier.data; |
4685 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); | |
4686 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
4687 | args.verifier = &verifier; | |
4688 | ||
c7a360b0 AA |
4689 | args.id_len = scnprintf(args.id, sizeof(args.id), |
4690 | "%s/%s.%s/%u", | |
4691 | clp->cl_ipaddr, | |
4692 | init_utsname()->nodename, | |
4693 | init_utsname()->domainname, | |
4694 | clp->cl_rpcclient->cl_auth->au_flavor); | |
99fe60d0 | 4695 | |
c7a360b0 AA |
4696 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); |
4697 | if (!status) | |
4698 | status = nfs4_check_cl_exchange_flags(clp->cl_exchange_flags); | |
99fe60d0 BH |
4699 | dprintk("<-- %s status= %d\n", __func__, status); |
4700 | return status; | |
4701 | } | |
4702 | ||
2050f0cc AA |
4703 | struct nfs4_get_lease_time_data { |
4704 | struct nfs4_get_lease_time_args *args; | |
4705 | struct nfs4_get_lease_time_res *res; | |
4706 | struct nfs_client *clp; | |
4707 | }; | |
4708 | ||
4709 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
4710 | void *calldata) | |
4711 | { | |
4712 | int ret; | |
4713 | struct nfs4_get_lease_time_data *data = | |
4714 | (struct nfs4_get_lease_time_data *)calldata; | |
4715 | ||
4716 | dprintk("--> %s\n", __func__); | |
689cf5c1 | 4717 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
2050f0cc AA |
4718 | /* just setup sequence, do not trigger session recovery |
4719 | since we're invoked within one */ | |
4720 | ret = nfs41_setup_sequence(data->clp->cl_session, | |
689cf5c1 AB |
4721 | &data->args->la_seq_args, |
4722 | &data->res->lr_seq_res, 0, task); | |
2050f0cc AA |
4723 | |
4724 | BUG_ON(ret == -EAGAIN); | |
4725 | rpc_call_start(task); | |
4726 | dprintk("<-- %s\n", __func__); | |
4727 | } | |
4728 | ||
4729 | /* | |
4730 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
4731 | * from sequence operation or clientid errors. | |
4732 | */ | |
4733 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
4734 | { | |
4735 | struct nfs4_get_lease_time_data *data = | |
4736 | (struct nfs4_get_lease_time_data *)calldata; | |
4737 | ||
4738 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
4739 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
4740 | return; | |
2050f0cc AA |
4741 | switch (task->tk_status) { |
4742 | case -NFS4ERR_DELAY: | |
4743 | case -NFS4ERR_GRACE: | |
4744 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
4745 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
4746 | task->tk_status = 0; | |
0110ee15 | 4747 | nfs_restart_rpc(task, data->clp); |
2050f0cc AA |
4748 | return; |
4749 | } | |
2050f0cc AA |
4750 | dprintk("<-- %s\n", __func__); |
4751 | } | |
4752 | ||
4753 | struct rpc_call_ops nfs4_get_lease_time_ops = { | |
4754 | .rpc_call_prepare = nfs4_get_lease_time_prepare, | |
4755 | .rpc_call_done = nfs4_get_lease_time_done, | |
4756 | }; | |
4757 | ||
4758 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
4759 | { | |
4760 | struct rpc_task *task; | |
4761 | struct nfs4_get_lease_time_args args; | |
4762 | struct nfs4_get_lease_time_res res = { | |
4763 | .lr_fsinfo = fsinfo, | |
4764 | }; | |
4765 | struct nfs4_get_lease_time_data data = { | |
4766 | .args = &args, | |
4767 | .res = &res, | |
4768 | .clp = clp, | |
4769 | }; | |
4770 | struct rpc_message msg = { | |
4771 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
4772 | .rpc_argp = &args, | |
4773 | .rpc_resp = &res, | |
4774 | }; | |
4775 | struct rpc_task_setup task_setup = { | |
4776 | .rpc_client = clp->cl_rpcclient, | |
4777 | .rpc_message = &msg, | |
4778 | .callback_ops = &nfs4_get_lease_time_ops, | |
4779 | .callback_data = &data | |
4780 | }; | |
4781 | int status; | |
4782 | ||
2050f0cc AA |
4783 | dprintk("--> %s\n", __func__); |
4784 | task = rpc_run_task(&task_setup); | |
4785 | ||
4786 | if (IS_ERR(task)) | |
4787 | status = PTR_ERR(task); | |
4788 | else { | |
4789 | status = task->tk_status; | |
4790 | rpc_put_task(task); | |
4791 | } | |
4792 | dprintk("<-- %s return %d\n", __func__, status); | |
4793 | ||
4794 | return status; | |
4795 | } | |
4796 | ||
b73dafa7 RL |
4797 | /* |
4798 | * Reset a slot table | |
4799 | */ | |
104aeba4 AA |
4800 | static int nfs4_reset_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs, |
4801 | int ivalue) | |
ac72b7b3 | 4802 | { |
104aeba4 | 4803 | struct nfs4_slot *new = NULL; |
b73dafa7 | 4804 | int i; |
ac72b7b3 AA |
4805 | int ret = 0; |
4806 | ||
104aeba4 AA |
4807 | dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__, |
4808 | max_reqs, tbl->max_slots); | |
ac72b7b3 | 4809 | |
104aeba4 AA |
4810 | /* Does the newly negotiated max_reqs match the existing slot table? */ |
4811 | if (max_reqs != tbl->max_slots) { | |
4812 | ret = -ENOMEM; | |
4813 | new = kmalloc(max_reqs * sizeof(struct nfs4_slot), | |
8535b2be | 4814 | GFP_NOFS); |
104aeba4 AA |
4815 | if (!new) |
4816 | goto out; | |
4817 | ret = 0; | |
4818 | kfree(tbl->slots); | |
ac72b7b3 AA |
4819 | } |
4820 | spin_lock(&tbl->slot_tbl_lock); | |
104aeba4 AA |
4821 | if (new) { |
4822 | tbl->slots = new; | |
4823 | tbl->max_slots = max_reqs; | |
4824 | } | |
4825 | for (i = 0; i < tbl->max_slots; ++i) | |
b73dafa7 | 4826 | tbl->slots[i].seq_nr = ivalue; |
ac72b7b3 AA |
4827 | spin_unlock(&tbl->slot_tbl_lock); |
4828 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
4829 | tbl, tbl->slots, tbl->max_slots); | |
4830 | out: | |
4831 | dprintk("<-- %s: return %d\n", __func__, ret); | |
4832 | return ret; | |
4833 | } | |
4834 | ||
b73dafa7 RL |
4835 | /* |
4836 | * Reset the forechannel and backchannel slot tables | |
4837 | */ | |
4838 | static int nfs4_reset_slot_tables(struct nfs4_session *session) | |
4839 | { | |
4840 | int status; | |
4841 | ||
4842 | status = nfs4_reset_slot_table(&session->fc_slot_table, | |
104aeba4 | 4843 | session->fc_attrs.max_reqs, 1); |
f8625a6a RL |
4844 | if (status) |
4845 | return status; | |
4846 | ||
4847 | status = nfs4_reset_slot_table(&session->bc_slot_table, | |
104aeba4 | 4848 | session->bc_attrs.max_reqs, 0); |
b73dafa7 RL |
4849 | return status; |
4850 | } | |
4851 | ||
f8625a6a RL |
4852 | /* Destroy the slot table */ |
4853 | static void nfs4_destroy_slot_tables(struct nfs4_session *session) | |
4854 | { | |
4855 | if (session->fc_slot_table.slots != NULL) { | |
4856 | kfree(session->fc_slot_table.slots); | |
4857 | session->fc_slot_table.slots = NULL; | |
4858 | } | |
4859 | if (session->bc_slot_table.slots != NULL) { | |
4860 | kfree(session->bc_slot_table.slots); | |
4861 | session->bc_slot_table.slots = NULL; | |
4862 | } | |
4863 | return; | |
4864 | } | |
4865 | ||
fc931582 AA |
4866 | /* |
4867 | * Initialize slot table | |
4868 | */ | |
050047ce RL |
4869 | static int nfs4_init_slot_table(struct nfs4_slot_table *tbl, |
4870 | int max_slots, int ivalue) | |
fc931582 | 4871 | { |
fc931582 AA |
4872 | struct nfs4_slot *slot; |
4873 | int ret = -ENOMEM; | |
4874 | ||
4875 | BUG_ON(max_slots > NFS4_MAX_SLOT_TABLE); | |
4876 | ||
050047ce | 4877 | dprintk("--> %s: max_reqs=%u\n", __func__, max_slots); |
fc931582 | 4878 | |
8535b2be | 4879 | slot = kcalloc(max_slots, sizeof(struct nfs4_slot), GFP_NOFS); |
fc931582 AA |
4880 | if (!slot) |
4881 | goto out; | |
fc931582 AA |
4882 | ret = 0; |
4883 | ||
4884 | spin_lock(&tbl->slot_tbl_lock); | |
fc931582 AA |
4885 | tbl->max_slots = max_slots; |
4886 | tbl->slots = slot; | |
4887 | tbl->highest_used_slotid = -1; /* no slot is currently used */ | |
4888 | spin_unlock(&tbl->slot_tbl_lock); | |
4889 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
4890 | tbl, tbl->slots, tbl->max_slots); | |
4891 | out: | |
4892 | dprintk("<-- %s: return %d\n", __func__, ret); | |
4893 | return ret; | |
fc931582 AA |
4894 | } |
4895 | ||
050047ce RL |
4896 | /* |
4897 | * Initialize the forechannel and backchannel tables | |
4898 | */ | |
4899 | static int nfs4_init_slot_tables(struct nfs4_session *session) | |
4900 | { | |
f26468fb TM |
4901 | struct nfs4_slot_table *tbl; |
4902 | int status = 0; | |
050047ce | 4903 | |
f26468fb TM |
4904 | tbl = &session->fc_slot_table; |
4905 | if (tbl->slots == NULL) { | |
4906 | status = nfs4_init_slot_table(tbl, | |
4907 | session->fc_attrs.max_reqs, 1); | |
4908 | if (status) | |
4909 | return status; | |
4910 | } | |
050047ce | 4911 | |
f26468fb TM |
4912 | tbl = &session->bc_slot_table; |
4913 | if (tbl->slots == NULL) { | |
4914 | status = nfs4_init_slot_table(tbl, | |
4915 | session->bc_attrs.max_reqs, 0); | |
4916 | if (status) | |
4917 | nfs4_destroy_slot_tables(session); | |
4918 | } | |
f8625a6a RL |
4919 | |
4920 | return status; | |
557134a3 AA |
4921 | } |
4922 | ||
4923 | struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) | |
4924 | { | |
4925 | struct nfs4_session *session; | |
4926 | struct nfs4_slot_table *tbl; | |
4927 | ||
8535b2be | 4928 | session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); |
557134a3 AA |
4929 | if (!session) |
4930 | return NULL; | |
76db6d95 | 4931 | |
557134a3 | 4932 | tbl = &session->fc_slot_table; |
9dfdf404 | 4933 | tbl->highest_used_slotid = -1; |
557134a3 | 4934 | spin_lock_init(&tbl->slot_tbl_lock); |
689cf5c1 | 4935 | rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); |
42acd021 | 4936 | init_completion(&tbl->complete); |
f8625a6a RL |
4937 | |
4938 | tbl = &session->bc_slot_table; | |
9dfdf404 | 4939 | tbl->highest_used_slotid = -1; |
f8625a6a RL |
4940 | spin_lock_init(&tbl->slot_tbl_lock); |
4941 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); | |
42acd021 | 4942 | init_completion(&tbl->complete); |
f8625a6a | 4943 | |
1055d76d TM |
4944 | session->session_state = 1<<NFS4_SESSION_INITING; |
4945 | ||
557134a3 AA |
4946 | session->clp = clp; |
4947 | return session; | |
4948 | } | |
4949 | ||
4950 | void nfs4_destroy_session(struct nfs4_session *session) | |
4951 | { | |
5a0ffe54 AA |
4952 | nfs4_proc_destroy_session(session); |
4953 | dprintk("%s Destroy backchannel for xprt %p\n", | |
4954 | __func__, session->clp->cl_rpcclient->cl_xprt); | |
4955 | xprt_destroy_backchannel(session->clp->cl_rpcclient->cl_xprt, | |
4956 | NFS41_BC_MIN_CALLBACKS); | |
f8625a6a | 4957 | nfs4_destroy_slot_tables(session); |
557134a3 AA |
4958 | kfree(session); |
4959 | } | |
4960 | ||
fc931582 AA |
4961 | /* |
4962 | * Initialize the values to be used by the client in CREATE_SESSION | |
4963 | * If nfs4_init_session set the fore channel request and response sizes, | |
4964 | * use them. | |
4965 | * | |
4966 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
4967 | * always set csa_cachethis to FALSE because the current implementation | |
4968 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
4969 | */ | |
4970 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
4971 | { | |
4972 | struct nfs4_session *session = args->client->cl_session; | |
4973 | unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz, | |
4974 | mxresp_sz = session->fc_attrs.max_resp_sz; | |
4975 | ||
4976 | if (mxrqst_sz == 0) | |
4977 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
4978 | if (mxresp_sz == 0) | |
4979 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
4980 | /* Fore channel attributes */ | |
4981 | args->fc_attrs.headerpadsz = 0; | |
4982 | args->fc_attrs.max_rqst_sz = mxrqst_sz; | |
4983 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 AA |
4984 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
4985 | args->fc_attrs.max_reqs = session->clp->cl_rpcclient->cl_xprt->max_reqs; | |
4986 | ||
4987 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 4988 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
4989 | __func__, |
4990 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 4991 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
4992 | |
4993 | /* Back channel attributes */ | |
4994 | args->bc_attrs.headerpadsz = 0; | |
4995 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; | |
4996 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
4997 | args->bc_attrs.max_resp_sz_cached = 0; | |
4998 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
4999 | args->bc_attrs.max_reqs = 1; | |
5000 | ||
5001 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5002 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5003 | __func__, | |
5004 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5005 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5006 | args->bc_attrs.max_reqs); | |
5007 | } | |
5008 | ||
43c2e885 | 5009 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5010 | { |
43c2e885 BF |
5011 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5012 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5013 | ||
5014 | if (rcvd->headerpadsz > sent->headerpadsz) | |
5015 | return -EINVAL; | |
5016 | if (rcvd->max_resp_sz > sent->max_resp_sz) | |
5017 | return -EINVAL; | |
5018 | /* | |
5019 | * Our requested max_ops is the minimum we need; we're not | |
5020 | * prepared to break up compounds into smaller pieces than that. | |
5021 | * So, no point even trying to continue if the server won't | |
5022 | * cooperate: | |
5023 | */ | |
5024 | if (rcvd->max_ops < sent->max_ops) | |
5025 | return -EINVAL; | |
5026 | if (rcvd->max_reqs == 0) | |
5027 | return -EINVAL; | |
5028 | return 0; | |
8d35301d AA |
5029 | } |
5030 | ||
43c2e885 BF |
5031 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5032 | { | |
5033 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5034 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5035 | |
43c2e885 BF |
5036 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5037 | return -EINVAL; | |
5038 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5039 | return -EINVAL; | |
5040 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5041 | return -EINVAL; | |
5042 | /* These would render the backchannel useless: */ | |
5043 | if (rcvd->max_ops == 0) | |
5044 | return -EINVAL; | |
5045 | if (rcvd->max_reqs == 0) | |
5046 | return -EINVAL; | |
5047 | return 0; | |
5048 | } | |
8d35301d | 5049 | |
8d35301d AA |
5050 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5051 | struct nfs4_session *session) | |
5052 | { | |
43c2e885 | 5053 | int ret; |
8d35301d | 5054 | |
43c2e885 BF |
5055 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5056 | if (ret) | |
5057 | return ret; | |
5058 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5059 | } |
5060 | ||
fc931582 AA |
5061 | static int _nfs4_proc_create_session(struct nfs_client *clp) |
5062 | { | |
5063 | struct nfs4_session *session = clp->cl_session; | |
5064 | struct nfs41_create_session_args args = { | |
5065 | .client = clp, | |
5066 | .cb_program = NFS4_CALLBACK, | |
5067 | }; | |
5068 | struct nfs41_create_session_res res = { | |
5069 | .client = clp, | |
5070 | }; | |
5071 | struct rpc_message msg = { | |
5072 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5073 | .rpc_argp = &args, | |
5074 | .rpc_resp = &res, | |
5075 | }; | |
5076 | int status; | |
5077 | ||
5078 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5079 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 AA |
5080 | |
5081 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, 0); | |
5082 | ||
8d35301d AA |
5083 | if (!status) |
5084 | /* Verify the session's negotiated channel_attrs values */ | |
5085 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5086 | if (!status) { |
5087 | /* Increment the clientid slot sequence id */ | |
5088 | clp->cl_seqid++; | |
5089 | } | |
5090 | ||
5091 | return status; | |
5092 | } | |
5093 | ||
5094 | /* | |
5095 | * Issues a CREATE_SESSION operation to the server. | |
5096 | * It is the responsibility of the caller to verify the session is | |
5097 | * expired before calling this routine. | |
5098 | */ | |
f26468fb | 5099 | int nfs4_proc_create_session(struct nfs_client *clp) |
fc931582 AA |
5100 | { |
5101 | int status; | |
5102 | unsigned *ptr; | |
fc931582 | 5103 | struct nfs4_session *session = clp->cl_session; |
7d6d63d6 RL |
5104 | long timeout = 0; |
5105 | int err; | |
fc931582 AA |
5106 | |
5107 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5108 | ||
7d6d63d6 RL |
5109 | do { |
5110 | status = _nfs4_proc_create_session(clp); | |
5111 | if (status == -NFS4ERR_DELAY) { | |
5112 | err = nfs4_delay(clp->cl_rpcclient, &timeout); | |
5113 | if (err) | |
5114 | status = err; | |
5115 | } | |
5116 | } while (status == -NFS4ERR_DELAY); | |
5117 | ||
fc931582 AA |
5118 | if (status) |
5119 | goto out; | |
5120 | ||
f26468fb TM |
5121 | /* Init and reset the fore channel */ |
5122 | status = nfs4_init_slot_tables(session); | |
5123 | dprintk("slot table initialization returned %d\n", status); | |
5124 | if (status) | |
5125 | goto out; | |
5126 | status = nfs4_reset_slot_tables(session); | |
5127 | dprintk("slot table reset returned %d\n", status); | |
fc931582 AA |
5128 | if (status) |
5129 | goto out; | |
5130 | ||
5131 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5132 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5133 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5134 | out: |
5135 | dprintk("<-- %s\n", __func__); | |
5136 | return status; | |
5137 | } | |
5138 | ||
0f3e66c6 AA |
5139 | /* |
5140 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5141 | * The caller must serialize access to this routine. | |
5142 | */ | |
5143 | int nfs4_proc_destroy_session(struct nfs4_session *session) | |
5144 | { | |
5145 | int status = 0; | |
5146 | struct rpc_message msg; | |
5147 | ||
5148 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5149 | ||
5150 | /* session is still being setup */ | |
5151 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5152 | return status; | |
5153 | ||
5154 | msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION]; | |
5155 | msg.rpc_argp = session; | |
5156 | msg.rpc_resp = NULL; | |
5157 | msg.rpc_cred = NULL; | |
5158 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, 0); | |
5159 | ||
5160 | if (status) | |
5161 | printk(KERN_WARNING | |
5162 | "Got error %d from the server on DESTROY_SESSION. " | |
5163 | "Session has been destroyed regardless...\n", status); | |
5164 | ||
5165 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5166 | return status; | |
5167 | } | |
5168 | ||
fccba804 TM |
5169 | int nfs4_init_session(struct nfs_server *server) |
5170 | { | |
5171 | struct nfs_client *clp = server->nfs_client; | |
2449ea2e | 5172 | struct nfs4_session *session; |
68bf05ef | 5173 | unsigned int rsize, wsize; |
fccba804 TM |
5174 | int ret; |
5175 | ||
5176 | if (!nfs4_has_session(clp)) | |
5177 | return 0; | |
5178 | ||
1055d76d TM |
5179 | session = clp->cl_session; |
5180 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5181 | return 0; | |
5182 | ||
68bf05ef AA |
5183 | rsize = server->rsize; |
5184 | if (rsize == 0) | |
5185 | rsize = NFS_MAX_FILE_IO_SIZE; | |
5186 | wsize = server->wsize; | |
5187 | if (wsize == 0) | |
5188 | wsize = NFS_MAX_FILE_IO_SIZE; | |
5189 | ||
68bf05ef AA |
5190 | session->fc_attrs.max_rqst_sz = wsize + nfs41_maxwrite_overhead; |
5191 | session->fc_attrs.max_resp_sz = rsize + nfs41_maxread_overhead; | |
2449ea2e | 5192 | |
fccba804 TM |
5193 | ret = nfs4_recover_expired_lease(server); |
5194 | if (!ret) | |
5195 | ret = nfs4_check_client_ready(clp); | |
5196 | return ret; | |
5197 | } | |
5198 | ||
d83217c1 AA |
5199 | int nfs4_init_ds_session(struct nfs_client *clp) |
5200 | { | |
5201 | struct nfs4_session *session = clp->cl_session; | |
5202 | int ret; | |
5203 | ||
5204 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5205 | return 0; | |
5206 | ||
5207 | ret = nfs4_client_recover_expired_lease(clp); | |
5208 | if (!ret) | |
5209 | /* Test for the DS role */ | |
5210 | if (!is_ds_client(clp)) | |
5211 | ret = -ENODEV; | |
5212 | if (!ret) | |
5213 | ret = nfs4_check_client_ready(clp); | |
5214 | return ret; | |
5215 | ||
5216 | } | |
5217 | EXPORT_SYMBOL_GPL(nfs4_init_ds_session); | |
5218 | ||
5219 | ||
fc01cea9 AA |
5220 | /* |
5221 | * Renew the cl_session lease. | |
5222 | */ | |
d5f8d3fe TM |
5223 | struct nfs4_sequence_data { |
5224 | struct nfs_client *clp; | |
5225 | struct nfs4_sequence_args args; | |
5226 | struct nfs4_sequence_res res; | |
5227 | }; | |
5228 | ||
dc96aef9 AB |
5229 | static void nfs41_sequence_release(void *data) |
5230 | { | |
d5f8d3fe TM |
5231 | struct nfs4_sequence_data *calldata = data; |
5232 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5233 | |
7135840f AB |
5234 | if (atomic_read(&clp->cl_count) > 1) |
5235 | nfs4_schedule_state_renewal(clp); | |
5236 | nfs_put_client(clp); | |
d5f8d3fe | 5237 | kfree(calldata); |
dc96aef9 AB |
5238 | } |
5239 | ||
aa5190d0 TM |
5240 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5241 | { | |
5242 | switch(task->tk_status) { | |
5243 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5244 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5245 | return -EAGAIN; | |
5246 | default: | |
0400a6b0 | 5247 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5248 | } |
5249 | return 0; | |
5250 | } | |
5251 | ||
dc96aef9 | 5252 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 5253 | { |
d5f8d3fe TM |
5254 | struct nfs4_sequence_data *calldata = data; |
5255 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 5256 | |
14516c3a TM |
5257 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
5258 | return; | |
fc01cea9 AA |
5259 | |
5260 | if (task->tk_status < 0) { | |
5261 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
5262 | if (atomic_read(&clp->cl_count) == 1) |
5263 | goto out; | |
fc01cea9 | 5264 | |
aa5190d0 TM |
5265 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
5266 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
5267 | return; |
5268 | } | |
5269 | } | |
fc01cea9 | 5270 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 5271 | out: |
fc01cea9 AA |
5272 | dprintk("<-- %s\n", __func__); |
5273 | } | |
5274 | ||
5275 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
5276 | { | |
d5f8d3fe TM |
5277 | struct nfs4_sequence_data *calldata = data; |
5278 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
5279 | struct nfs4_sequence_args *args; |
5280 | struct nfs4_sequence_res *res; | |
5281 | ||
fc01cea9 AA |
5282 | args = task->tk_msg.rpc_argp; |
5283 | res = task->tk_msg.rpc_resp; | |
5284 | ||
035168ab | 5285 | if (nfs41_setup_sequence(clp->cl_session, args, res, 0, task)) |
fc01cea9 AA |
5286 | return; |
5287 | rpc_call_start(task); | |
5288 | } | |
5289 | ||
5290 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
5291 | .rpc_call_done = nfs41_sequence_call_done, | |
5292 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 5293 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
5294 | }; |
5295 | ||
71ac6da9 | 5296 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) |
fc01cea9 | 5297 | { |
d5f8d3fe | 5298 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
5299 | struct rpc_message msg = { |
5300 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
5301 | .rpc_cred = cred, | |
5302 | }; | |
71ac6da9 TM |
5303 | struct rpc_task_setup task_setup_data = { |
5304 | .rpc_client = clp->cl_rpcclient, | |
5305 | .rpc_message = &msg, | |
5306 | .callback_ops = &nfs41_sequence_ops, | |
5307 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, | |
5308 | }; | |
fc01cea9 | 5309 | |
7135840f | 5310 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 5311 | return ERR_PTR(-EIO); |
dfb4f309 | 5312 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 5313 | if (calldata == NULL) { |
7135840f | 5314 | nfs_put_client(clp); |
71ac6da9 | 5315 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 5316 | } |
d5f8d3fe TM |
5317 | msg.rpc_argp = &calldata->args; |
5318 | msg.rpc_resp = &calldata->res; | |
5319 | calldata->clp = clp; | |
71ac6da9 | 5320 | task_setup_data.callback_data = calldata; |
fc01cea9 | 5321 | |
71ac6da9 TM |
5322 | return rpc_run_task(&task_setup_data); |
5323 | } | |
5324 | ||
5325 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5326 | { | |
5327 | struct rpc_task *task; | |
5328 | int ret = 0; | |
5329 | ||
5330 | task = _nfs41_proc_sequence(clp, cred); | |
5331 | if (IS_ERR(task)) | |
5332 | ret = PTR_ERR(task); | |
5333 | else | |
bf294b41 | 5334 | rpc_put_task_async(task); |
71ac6da9 TM |
5335 | dprintk("<-- %s status=%d\n", __func__, ret); |
5336 | return ret; | |
5337 | } | |
5338 | ||
5339 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5340 | { | |
5341 | struct rpc_task *task; | |
5342 | int ret; | |
5343 | ||
5344 | task = _nfs41_proc_sequence(clp, cred); | |
5345 | if (IS_ERR(task)) { | |
5346 | ret = PTR_ERR(task); | |
5347 | goto out; | |
5348 | } | |
5349 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
5350 | if (!ret) { |
5351 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
5352 | ||
5353 | if (task->tk_status == 0) | |
5354 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 5355 | ret = task->tk_status; |
b4410c2f | 5356 | } |
71ac6da9 TM |
5357 | rpc_put_task(task); |
5358 | out: | |
5359 | dprintk("<-- %s status=%d\n", __func__, ret); | |
5360 | return ret; | |
fc01cea9 AA |
5361 | } |
5362 | ||
fce5c838 RL |
5363 | struct nfs4_reclaim_complete_data { |
5364 | struct nfs_client *clp; | |
5365 | struct nfs41_reclaim_complete_args arg; | |
5366 | struct nfs41_reclaim_complete_res res; | |
5367 | }; | |
5368 | ||
5369 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
5370 | { | |
5371 | struct nfs4_reclaim_complete_data *calldata = data; | |
5372 | ||
b257957e | 5373 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
035168ab TM |
5374 | if (nfs41_setup_sequence(calldata->clp->cl_session, |
5375 | &calldata->arg.seq_args, | |
fce5c838 RL |
5376 | &calldata->res.seq_res, 0, task)) |
5377 | return; | |
5378 | ||
5379 | rpc_call_start(task); | |
5380 | } | |
5381 | ||
aa5190d0 TM |
5382 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5383 | { | |
5384 | switch(task->tk_status) { | |
5385 | case 0: | |
5386 | case -NFS4ERR_COMPLETE_ALREADY: | |
5387 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
5388 | break; | |
5389 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5390 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5391 | return -EAGAIN; | |
5392 | default: | |
0400a6b0 | 5393 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5394 | } |
5395 | return 0; | |
5396 | } | |
5397 | ||
fce5c838 RL |
5398 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
5399 | { | |
5400 | struct nfs4_reclaim_complete_data *calldata = data; | |
5401 | struct nfs_client *clp = calldata->clp; | |
5402 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
5403 | ||
5404 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5405 | if (!nfs41_sequence_done(task, res)) |
5406 | return; | |
fce5c838 | 5407 | |
aa5190d0 TM |
5408 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
5409 | rpc_restart_call_prepare(task); | |
5410 | return; | |
5411 | } | |
fce5c838 RL |
5412 | dprintk("<-- %s\n", __func__); |
5413 | } | |
5414 | ||
5415 | static void nfs4_free_reclaim_complete_data(void *data) | |
5416 | { | |
5417 | struct nfs4_reclaim_complete_data *calldata = data; | |
5418 | ||
5419 | kfree(calldata); | |
5420 | } | |
5421 | ||
5422 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
5423 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
5424 | .rpc_call_done = nfs4_reclaim_complete_done, | |
5425 | .rpc_release = nfs4_free_reclaim_complete_data, | |
5426 | }; | |
5427 | ||
5428 | /* | |
5429 | * Issue a global reclaim complete. | |
5430 | */ | |
5431 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
5432 | { | |
5433 | struct nfs4_reclaim_complete_data *calldata; | |
5434 | struct rpc_task *task; | |
5435 | struct rpc_message msg = { | |
5436 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
5437 | }; | |
5438 | struct rpc_task_setup task_setup_data = { | |
5439 | .rpc_client = clp->cl_rpcclient, | |
5440 | .rpc_message = &msg, | |
5441 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
5442 | .flags = RPC_TASK_ASYNC, | |
5443 | }; | |
5444 | int status = -ENOMEM; | |
5445 | ||
5446 | dprintk("--> %s\n", __func__); | |
8535b2be | 5447 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
5448 | if (calldata == NULL) |
5449 | goto out; | |
5450 | calldata->clp = clp; | |
5451 | calldata->arg.one_fs = 0; | |
fce5c838 RL |
5452 | |
5453 | msg.rpc_argp = &calldata->arg; | |
5454 | msg.rpc_resp = &calldata->res; | |
5455 | task_setup_data.callback_data = calldata; | |
5456 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 5457 | if (IS_ERR(task)) { |
fce5c838 | 5458 | status = PTR_ERR(task); |
acf82b85 DC |
5459 | goto out; |
5460 | } | |
c34c32ea AA |
5461 | status = nfs4_wait_for_completion_rpc_task(task); |
5462 | if (status == 0) | |
5463 | status = task->tk_status; | |
fce5c838 | 5464 | rpc_put_task(task); |
acf82b85 | 5465 | return 0; |
fce5c838 RL |
5466 | out: |
5467 | dprintk("<-- %s status=%d\n", __func__, status); | |
5468 | return status; | |
5469 | } | |
b1f69b75 AA |
5470 | |
5471 | static void | |
5472 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
5473 | { | |
5474 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 5475 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
b1f69b75 AA |
5476 | |
5477 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
5478 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
5479 | * right now covering the LAYOUTGET we are about to send. | |
5480 | * However, that is not so catastrophic, and there seems | |
5481 | * to be no way to prevent it completely. | |
5482 | */ | |
b1f69b75 AA |
5483 | if (nfs4_setup_sequence(server, &lgp->args.seq_args, |
5484 | &lgp->res.seq_res, 0, task)) | |
5485 | return; | |
cf7d63f1 FI |
5486 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
5487 | NFS_I(lgp->args.inode)->layout, | |
5488 | lgp->args.ctx->state)) { | |
5489 | rpc_exit(task, NFS4_OK); | |
5490 | return; | |
5491 | } | |
b1f69b75 AA |
5492 | rpc_call_start(task); |
5493 | } | |
5494 | ||
5495 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
5496 | { | |
5497 | struct nfs4_layoutget *lgp = calldata; | |
5498 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5499 | ||
5500 | dprintk("--> %s\n", __func__); | |
5501 | ||
5502 | if (!nfs4_sequence_done(task, &lgp->res.seq_res)) | |
5503 | return; | |
5504 | ||
5505 | switch (task->tk_status) { | |
5506 | case 0: | |
5507 | break; | |
5508 | case -NFS4ERR_LAYOUTTRYLATER: | |
5509 | case -NFS4ERR_RECALLCONFLICT: | |
5510 | task->tk_status = -NFS4ERR_DELAY; | |
5511 | /* Fall through */ | |
5512 | default: | |
5513 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
5514 | rpc_restart_call_prepare(task); | |
5515 | return; | |
5516 | } | |
5517 | } | |
b1f69b75 AA |
5518 | dprintk("<-- %s\n", __func__); |
5519 | } | |
5520 | ||
5521 | static void nfs4_layoutget_release(void *calldata) | |
5522 | { | |
5523 | struct nfs4_layoutget *lgp = calldata; | |
5524 | ||
5525 | dprintk("--> %s\n", __func__); | |
b1f69b75 AA |
5526 | if (lgp->res.layout.buf != NULL) |
5527 | free_page((unsigned long) lgp->res.layout.buf); | |
5528 | put_nfs_open_context(lgp->args.ctx); | |
5529 | kfree(calldata); | |
5530 | dprintk("<-- %s\n", __func__); | |
5531 | } | |
5532 | ||
5533 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
5534 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
5535 | .rpc_call_done = nfs4_layoutget_done, | |
5536 | .rpc_release = nfs4_layoutget_release, | |
5537 | }; | |
5538 | ||
5539 | int nfs4_proc_layoutget(struct nfs4_layoutget *lgp) | |
5540 | { | |
5541 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5542 | struct rpc_task *task; | |
5543 | struct rpc_message msg = { | |
5544 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
5545 | .rpc_argp = &lgp->args, | |
5546 | .rpc_resp = &lgp->res, | |
5547 | }; | |
5548 | struct rpc_task_setup task_setup_data = { | |
5549 | .rpc_client = server->client, | |
5550 | .rpc_message = &msg, | |
5551 | .callback_ops = &nfs4_layoutget_call_ops, | |
5552 | .callback_data = lgp, | |
5553 | .flags = RPC_TASK_ASYNC, | |
5554 | }; | |
5555 | int status = 0; | |
5556 | ||
5557 | dprintk("--> %s\n", __func__); | |
5558 | ||
5559 | lgp->res.layout.buf = (void *)__get_free_page(GFP_NOFS); | |
5560 | if (lgp->res.layout.buf == NULL) { | |
5561 | nfs4_layoutget_release(lgp); | |
5562 | return -ENOMEM; | |
5563 | } | |
5564 | ||
5565 | lgp->res.seq_res.sr_slot = NULL; | |
5566 | task = rpc_run_task(&task_setup_data); | |
5567 | if (IS_ERR(task)) | |
5568 | return PTR_ERR(task); | |
5569 | status = nfs4_wait_for_completion_rpc_task(task); | |
c31663d4 FI |
5570 | if (status == 0) |
5571 | status = task->tk_status; | |
5572 | if (status == 0) | |
5573 | status = pnfs_layout_process(lgp); | |
b1f69b75 AA |
5574 | rpc_put_task(task); |
5575 | dprintk("<-- %s status=%d\n", __func__, status); | |
5576 | return status; | |
5577 | } | |
5578 | ||
5579 | static int | |
5580 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
5581 | { | |
5582 | struct nfs4_getdeviceinfo_args args = { | |
5583 | .pdev = pdev, | |
5584 | }; | |
5585 | struct nfs4_getdeviceinfo_res res = { | |
5586 | .pdev = pdev, | |
5587 | }; | |
5588 | struct rpc_message msg = { | |
5589 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
5590 | .rpc_argp = &args, | |
5591 | .rpc_resp = &res, | |
5592 | }; | |
5593 | int status; | |
5594 | ||
5595 | dprintk("--> %s\n", __func__); | |
e73b83f2 | 5596 | status = nfs4_call_sync(server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
5597 | dprintk("<-- %s status=%d\n", __func__, status); |
5598 | ||
5599 | return status; | |
5600 | } | |
5601 | ||
5602 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
5603 | { | |
5604 | struct nfs4_exception exception = { }; | |
5605 | int err; | |
5606 | ||
5607 | do { | |
5608 | err = nfs4_handle_exception(server, | |
5609 | _nfs4_proc_getdeviceinfo(server, pdev), | |
5610 | &exception); | |
5611 | } while (exception.retry); | |
5612 | return err; | |
5613 | } | |
5614 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
5615 | ||
557134a3 AA |
5616 | #endif /* CONFIG_NFS_V4_1 */ |
5617 | ||
591d71cb | 5618 | struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 5619 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 5620 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
5621 | .recover_open = nfs4_open_reclaim, |
5622 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 5623 | .establish_clid = nfs4_init_clientid, |
90a16617 | 5624 | .get_clid_cred = nfs4_get_setclientid_cred, |
1da177e4 LT |
5625 | }; |
5626 | ||
591d71cb AA |
5627 | #if defined(CONFIG_NFS_V4_1) |
5628 | struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { | |
5629 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, | |
5630 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
5631 | .recover_open = nfs4_open_reclaim, | |
5632 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 5633 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 5634 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 5635 | .reclaim_complete = nfs41_proc_reclaim_complete, |
591d71cb AA |
5636 | }; |
5637 | #endif /* CONFIG_NFS_V4_1 */ | |
5638 | ||
5639 | struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { | |
5640 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, | |
5641 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
5642 | .recover_open = nfs4_open_expired, | |
5643 | .recover_lock = nfs4_lock_expired, | |
5644 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 5645 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
5646 | }; |
5647 | ||
5648 | #if defined(CONFIG_NFS_V4_1) | |
5649 | struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { | |
7eff03ae | 5650 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 5651 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
1da177e4 LT |
5652 | .recover_open = nfs4_open_expired, |
5653 | .recover_lock = nfs4_lock_expired, | |
4d643d1d | 5654 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 5655 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 5656 | }; |
591d71cb | 5657 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 5658 | |
29fba38b BH |
5659 | struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
5660 | .sched_state_renewal = nfs4_proc_async_renew, | |
a7b72103 | 5661 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 5662 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
5663 | }; |
5664 | ||
5665 | #if defined(CONFIG_NFS_V4_1) | |
5666 | struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { | |
5667 | .sched_state_renewal = nfs41_proc_async_sequence, | |
a7b72103 | 5668 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 5669 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
5670 | }; |
5671 | #endif | |
5672 | ||
97dc1359 TM |
5673 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
5674 | .minor_version = 0, | |
5675 | .call_sync = _nfs4_call_sync, | |
e047a10c | 5676 | .validate_stateid = nfs4_validate_delegation_stateid, |
c48f4f35 TM |
5677 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
5678 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
5679 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
5680 | }; |
5681 | ||
5682 | #if defined(CONFIG_NFS_V4_1) | |
5683 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
5684 | .minor_version = 1, | |
5685 | .call_sync = _nfs4_call_sync_session, | |
e047a10c | 5686 | .validate_stateid = nfs41_validate_delegation_stateid, |
c48f4f35 TM |
5687 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
5688 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
5689 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
5690 | }; |
5691 | #endif | |
5692 | ||
97dc1359 TM |
5693 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
5694 | [0] = &nfs_v4_0_minor_ops, | |
5695 | #if defined(CONFIG_NFS_V4_1) | |
5696 | [1] = &nfs_v4_1_minor_ops, | |
5697 | #endif | |
5698 | }; | |
5699 | ||
92e1d5be | 5700 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
5701 | .permission = nfs_permission, |
5702 | .getattr = nfs_getattr, | |
5703 | .setattr = nfs_setattr, | |
64c2ce8b AK |
5704 | .getxattr = generic_getxattr, |
5705 | .setxattr = generic_setxattr, | |
5706 | .listxattr = generic_listxattr, | |
5707 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
5708 | }; |
5709 | ||
509de811 | 5710 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
5711 | .version = 4, /* protocol version */ |
5712 | .dentry_ops = &nfs4_dentry_operations, | |
5713 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 5714 | .file_inode_ops = &nfs4_file_inode_operations, |
1da177e4 LT |
5715 | .getroot = nfs4_proc_get_root, |
5716 | .getattr = nfs4_proc_getattr, | |
5717 | .setattr = nfs4_proc_setattr, | |
2b3de441 | 5718 | .lookupfh = nfs4_proc_lookupfh, |
1da177e4 LT |
5719 | .lookup = nfs4_proc_lookup, |
5720 | .access = nfs4_proc_access, | |
5721 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
5722 | .create = nfs4_proc_create, |
5723 | .remove = nfs4_proc_remove, | |
5724 | .unlink_setup = nfs4_proc_unlink_setup, | |
5725 | .unlink_done = nfs4_proc_unlink_done, | |
5726 | .rename = nfs4_proc_rename, | |
d3d4152a JL |
5727 | .rename_setup = nfs4_proc_rename_setup, |
5728 | .rename_done = nfs4_proc_rename_done, | |
1da177e4 LT |
5729 | .link = nfs4_proc_link, |
5730 | .symlink = nfs4_proc_symlink, | |
5731 | .mkdir = nfs4_proc_mkdir, | |
5732 | .rmdir = nfs4_proc_remove, | |
5733 | .readdir = nfs4_proc_readdir, | |
5734 | .mknod = nfs4_proc_mknod, | |
5735 | .statfs = nfs4_proc_statfs, | |
5736 | .fsinfo = nfs4_proc_fsinfo, | |
5737 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 5738 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
5739 | .decode_dirent = nfs4_decode_dirent, |
5740 | .read_setup = nfs4_proc_read_setup, | |
ec06c096 | 5741 | .read_done = nfs4_read_done, |
1da177e4 | 5742 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 5743 | .write_done = nfs4_write_done, |
1da177e4 | 5744 | .commit_setup = nfs4_proc_commit_setup, |
788e7a89 | 5745 | .commit_done = nfs4_commit_done, |
1da177e4 | 5746 | .lock = nfs4_proc_lock, |
e50a1c2e | 5747 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 5748 | .close_context = nfs4_close_context, |
2b484297 | 5749 | .open_context = nfs4_atomic_open, |
45a52a02 | 5750 | .init_client = nfs4_init_client, |
1da177e4 LT |
5751 | }; |
5752 | ||
64c2ce8b AK |
5753 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
5754 | .prefix = XATTR_NAME_NFSV4_ACL, | |
5755 | .list = nfs4_xattr_list_nfs4_acl, | |
5756 | .get = nfs4_xattr_get_nfs4_acl, | |
5757 | .set = nfs4_xattr_set_nfs4_acl, | |
5758 | }; | |
5759 | ||
5760 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
5761 | &nfs4_xattr_nfs4_acl_handler, | |
5762 | NULL | |
5763 | }; | |
5764 | ||
1da177e4 LT |
5765 | /* |
5766 | * Local variables: | |
5767 | * c-basic-offset: 8 | |
5768 | * End: | |
5769 | */ |