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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4proc.c | |
3 | * | |
4 | * Client-side procedure declarations for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/mm.h> | |
1da177e4 LT |
39 | #include <linux/delay.h> |
40 | #include <linux/errno.h> | |
41 | #include <linux/string.h> | |
652f89f6 TM |
42 | #include <linux/ratelimit.h> |
43 | #include <linux/printk.h> | |
5a0e3ad6 | 44 | #include <linux/slab.h> |
1da177e4 LT |
45 | #include <linux/sunrpc/clnt.h> |
46 | #include <linux/nfs.h> | |
47 | #include <linux/nfs4.h> | |
48 | #include <linux/nfs_fs.h> | |
49 | #include <linux/nfs_page.h> | |
9b7160c5 | 50 | #include <linux/nfs_mount.h> |
1da177e4 | 51 | #include <linux/namei.h> |
02a913a7 | 52 | #include <linux/mount.h> |
99fe60d0 | 53 | #include <linux/module.h> |
6926afd1 | 54 | #include <linux/nfs_idmap.h> |
5a0ffe54 | 55 | #include <linux/sunrpc/bc_xprt.h> |
64c2ce8b | 56 | #include <linux/xattr.h> |
c7a360b0 | 57 | #include <linux/utsname.h> |
d310310c | 58 | #include <linux/freezer.h> |
1da177e4 | 59 | |
4ce79717 | 60 | #include "nfs4_fs.h" |
1da177e4 | 61 | #include "delegation.h" |
101070ca | 62 | #include "internal.h" |
006ea73e | 63 | #include "iostat.h" |
fc931582 | 64 | #include "callback.h" |
b1f69b75 | 65 | #include "pnfs.h" |
f092075d | 66 | #include "netns.h" |
1da177e4 LT |
67 | |
68 | #define NFSDBG_FACILITY NFSDBG_PROC | |
69 | ||
2066fe89 | 70 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
71 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
72 | ||
a78cb57a TM |
73 | #define NFS4_MAX_LOOP_ON_RECOVER (10) |
74 | ||
cdd4e68b | 75 | struct nfs4_opendata; |
864472e9 | 76 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
b257957e | 77 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 78 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
9e33bed5 | 79 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); |
81934ddb | 80 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); |
bae36241 | 81 | static int nfs4_proc_getattr(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *); |
9936781d | 82 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); |
0ab64e0e TM |
83 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
84 | struct nfs_fattr *fattr, struct iattr *sattr, | |
85 | struct nfs4_state *state); | |
f062eb6c | 86 | #ifdef CONFIG_NFS_V4_1 |
1cab0652 BS |
87 | static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *); |
88 | static int nfs41_free_stateid(struct nfs_server *, nfs4_stateid *); | |
f062eb6c | 89 | #endif |
1da177e4 | 90 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 91 | static int nfs4_map_errors(int err) |
1da177e4 | 92 | { |
52567b03 TM |
93 | if (err >= -1000) |
94 | return err; | |
95 | switch (err) { | |
96 | case -NFS4ERR_RESOURCE: | |
97 | return -EREMOTEIO; | |
7ebb9315 BS |
98 | case -NFS4ERR_WRONGSEC: |
99 | return -EPERM; | |
3ddeb7c5 TM |
100 | case -NFS4ERR_BADOWNER: |
101 | case -NFS4ERR_BADNAME: | |
102 | return -EINVAL; | |
fb13bfa7 TM |
103 | case -NFS4ERR_SHARE_DENIED: |
104 | return -EACCES; | |
f25efd85 SD |
105 | case -NFS4ERR_MINOR_VERS_MISMATCH: |
106 | return -EPROTONOSUPPORT; | |
6168f62c WAA |
107 | case -NFS4ERR_ACCESS: |
108 | return -EACCES; | |
52567b03 | 109 | default: |
1da177e4 | 110 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 111 | __func__, -err); |
52567b03 | 112 | break; |
1da177e4 | 113 | } |
52567b03 | 114 | return -EIO; |
1da177e4 LT |
115 | } |
116 | ||
117 | /* | |
118 | * This is our standard bitmap for GETATTR requests. | |
119 | */ | |
1549210f | 120 | const u32 nfs4_fattr_bitmap[3] = { |
1da177e4 LT |
121 | FATTR4_WORD0_TYPE |
122 | | FATTR4_WORD0_CHANGE | |
123 | | FATTR4_WORD0_SIZE | |
124 | | FATTR4_WORD0_FSID | |
125 | | FATTR4_WORD0_FILEID, | |
126 | FATTR4_WORD1_MODE | |
127 | | FATTR4_WORD1_NUMLINKS | |
128 | | FATTR4_WORD1_OWNER | |
129 | | FATTR4_WORD1_OWNER_GROUP | |
130 | | FATTR4_WORD1_RAWDEV | |
131 | | FATTR4_WORD1_SPACE_USED | |
132 | | FATTR4_WORD1_TIME_ACCESS | |
133 | | FATTR4_WORD1_TIME_METADATA | |
134 | | FATTR4_WORD1_TIME_MODIFY | |
135 | }; | |
136 | ||
1549210f TM |
137 | static const u32 nfs4_pnfs_open_bitmap[3] = { |
138 | FATTR4_WORD0_TYPE | |
139 | | FATTR4_WORD0_CHANGE | |
140 | | FATTR4_WORD0_SIZE | |
141 | | FATTR4_WORD0_FSID | |
142 | | FATTR4_WORD0_FILEID, | |
143 | FATTR4_WORD1_MODE | |
144 | | FATTR4_WORD1_NUMLINKS | |
145 | | FATTR4_WORD1_OWNER | |
146 | | FATTR4_WORD1_OWNER_GROUP | |
147 | | FATTR4_WORD1_RAWDEV | |
148 | | FATTR4_WORD1_SPACE_USED | |
149 | | FATTR4_WORD1_TIME_ACCESS | |
150 | | FATTR4_WORD1_TIME_METADATA | |
151 | | FATTR4_WORD1_TIME_MODIFY, | |
152 | FATTR4_WORD2_MDSTHRESHOLD | |
153 | }; | |
154 | ||
e23008ec AA |
155 | static const u32 nfs4_open_noattr_bitmap[3] = { |
156 | FATTR4_WORD0_TYPE | |
157 | | FATTR4_WORD0_CHANGE | |
158 | | FATTR4_WORD0_FILEID, | |
159 | }; | |
160 | ||
1da177e4 LT |
161 | const u32 nfs4_statfs_bitmap[2] = { |
162 | FATTR4_WORD0_FILES_AVAIL | |
163 | | FATTR4_WORD0_FILES_FREE | |
164 | | FATTR4_WORD0_FILES_TOTAL, | |
165 | FATTR4_WORD1_SPACE_AVAIL | |
166 | | FATTR4_WORD1_SPACE_FREE | |
167 | | FATTR4_WORD1_SPACE_TOTAL | |
168 | }; | |
169 | ||
4ce79717 | 170 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
171 | FATTR4_WORD0_MAXLINK |
172 | | FATTR4_WORD0_MAXNAME, | |
173 | 0 | |
174 | }; | |
175 | ||
dae100c2 | 176 | const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE |
1da177e4 LT |
177 | | FATTR4_WORD0_MAXREAD |
178 | | FATTR4_WORD0_MAXWRITE | |
179 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 180 | FATTR4_WORD1_TIME_DELTA |
dae100c2 FI |
181 | | FATTR4_WORD1_FS_LAYOUT_TYPES, |
182 | FATTR4_WORD2_LAYOUT_BLKSIZE | |
1da177e4 LT |
183 | }; |
184 | ||
830b8e33 MN |
185 | const u32 nfs4_fs_locations_bitmap[2] = { |
186 | FATTR4_WORD0_TYPE | |
187 | | FATTR4_WORD0_CHANGE | |
188 | | FATTR4_WORD0_SIZE | |
189 | | FATTR4_WORD0_FSID | |
190 | | FATTR4_WORD0_FILEID | |
191 | | FATTR4_WORD0_FS_LOCATIONS, | |
192 | FATTR4_WORD1_MODE | |
193 | | FATTR4_WORD1_NUMLINKS | |
194 | | FATTR4_WORD1_OWNER | |
195 | | FATTR4_WORD1_OWNER_GROUP | |
196 | | FATTR4_WORD1_RAWDEV | |
197 | | FATTR4_WORD1_SPACE_USED | |
198 | | FATTR4_WORD1_TIME_ACCESS | |
199 | | FATTR4_WORD1_TIME_METADATA | |
200 | | FATTR4_WORD1_TIME_MODIFY | |
201 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
202 | }; | |
203 | ||
bc4785cd | 204 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
205 | struct nfs4_readdir_arg *readdir) |
206 | { | |
0dbb4c67 | 207 | __be32 *start, *p; |
1da177e4 | 208 | |
1da177e4 | 209 | if (cookie > 2) { |
b7ef1956 | 210 | readdir->cookie = cookie; |
1da177e4 LT |
211 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
212 | return; | |
213 | } | |
214 | ||
215 | readdir->cookie = 0; | |
216 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
217 | if (cookie == 2) | |
218 | return; | |
219 | ||
220 | /* | |
221 | * NFSv4 servers do not return entries for '.' and '..' | |
222 | * Therefore, we fake these entries here. We let '.' | |
223 | * have cookie 0 and '..' have cookie 1. Note that | |
224 | * when talking to the server, we always send cookie 0 | |
225 | * instead of 1 or 2. | |
226 | */ | |
2b86ce2d | 227 | start = p = kmap_atomic(*readdir->pages); |
1da177e4 LT |
228 | |
229 | if (cookie == 0) { | |
230 | *p++ = xdr_one; /* next */ | |
231 | *p++ = xdr_zero; /* cookie, first word */ | |
232 | *p++ = xdr_one; /* cookie, second word */ | |
233 | *p++ = xdr_one; /* entry len */ | |
234 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
235 | p++; | |
236 | *p++ = xdr_one; /* bitmap length */ | |
237 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
238 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 239 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
240 | } |
241 | ||
242 | *p++ = xdr_one; /* next */ | |
243 | *p++ = xdr_zero; /* cookie, first word */ | |
244 | *p++ = xdr_two; /* cookie, second word */ | |
245 | *p++ = xdr_two; /* entry len */ | |
246 | memcpy(p, "..\0\0", 4); /* entry */ | |
247 | p++; | |
248 | *p++ = xdr_one; /* bitmap length */ | |
249 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
250 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 251 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
252 | |
253 | readdir->pgbase = (char *)p - (char *)start; | |
254 | readdir->count -= readdir->pgbase; | |
2b86ce2d | 255 | kunmap_atomic(start); |
1da177e4 LT |
256 | } |
257 | ||
65de872e TM |
258 | static int nfs4_wait_clnt_recover(struct nfs_client *clp) |
259 | { | |
260 | int res; | |
261 | ||
262 | might_sleep(); | |
263 | ||
e005e804 | 264 | res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING, |
72cb77f4 | 265 | nfs_wait_bit_killable, TASK_KILLABLE); |
46a87b8a CL |
266 | if (res) |
267 | return res; | |
268 | ||
269 | if (clp->cl_cons_state < 0) | |
270 | return clp->cl_cons_state; | |
271 | return 0; | |
65de872e TM |
272 | } |
273 | ||
274 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) | |
275 | { | |
276 | int res = 0; | |
277 | ||
278 | might_sleep(); | |
279 | ||
280 | if (*timeout <= 0) | |
281 | *timeout = NFS4_POLL_RETRY_MIN; | |
282 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
283 | *timeout = NFS4_POLL_RETRY_MAX; | |
d310310c | 284 | freezable_schedule_timeout_killable(*timeout); |
65de872e TM |
285 | if (fatal_signal_pending(current)) |
286 | res = -ERESTARTSYS; | |
287 | *timeout <<= 1; | |
288 | return res; | |
289 | } | |
290 | ||
291 | /* This is the error handling routine for processes that are allowed | |
292 | * to sleep. | |
293 | */ | |
b064eca2 | 294 | static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
65de872e TM |
295 | { |
296 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 297 | struct nfs4_state *state = exception->state; |
3114ea7a | 298 | struct inode *inode = exception->inode; |
65de872e TM |
299 | int ret = errorcode; |
300 | ||
301 | exception->retry = 0; | |
302 | switch(errorcode) { | |
303 | case 0: | |
304 | return 0; | |
3114ea7a | 305 | case -NFS4ERR_OPENMODE: |
011e2a7f | 306 | if (inode && nfs4_have_delegation(inode, FMODE_READ)) { |
57ec14c5 | 307 | nfs4_inode_return_delegation(inode); |
3114ea7a TM |
308 | exception->retry = 1; |
309 | return 0; | |
310 | } | |
311 | if (state == NULL) | |
312 | break; | |
313 | nfs4_schedule_stateid_recovery(server, state); | |
314 | goto wait_on_recovery; | |
a1d0b5ee | 315 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
316 | case -NFS4ERR_ADMIN_REVOKED: |
317 | case -NFS4ERR_BAD_STATEID: | |
9e33bed5 TM |
318 | if (state == NULL) |
319 | break; | |
14977489 | 320 | nfs_remove_bad_delegation(state->inode); |
0400a6b0 TM |
321 | nfs4_schedule_stateid_recovery(server, state); |
322 | goto wait_on_recovery; | |
0ced63d1 TM |
323 | case -NFS4ERR_EXPIRED: |
324 | if (state != NULL) | |
325 | nfs4_schedule_stateid_recovery(server, state); | |
65de872e | 326 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 327 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
328 | nfs4_schedule_lease_recovery(clp); |
329 | goto wait_on_recovery; | |
03391693 | 330 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
331 | case -NFS4ERR_BADSESSION: |
332 | case -NFS4ERR_BADSLOT: | |
333 | case -NFS4ERR_BAD_HIGH_SLOT: | |
334 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
335 | case -NFS4ERR_DEADSESSION: | |
336 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
337 | case -NFS4ERR_SEQ_MISORDERED: | |
338 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
339 | errorcode); | |
9f594791 | 340 | nfs4_schedule_session_recovery(clp->cl_session, errorcode); |
399f11c3 | 341 | goto wait_on_recovery; |
03391693 | 342 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 343 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
344 | if (exception->timeout > HZ) { |
345 | /* We have retried a decent amount, time to | |
346 | * fail | |
347 | */ | |
348 | ret = -EBUSY; | |
349 | break; | |
350 | } | |
65de872e TM |
351 | case -NFS4ERR_GRACE: |
352 | case -NFS4ERR_DELAY: | |
2c643488 | 353 | case -EKEYEXPIRED: |
65de872e TM |
354 | ret = nfs4_delay(server->client, &exception->timeout); |
355 | if (ret != 0) | |
356 | break; | |
a8a4ae3a | 357 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
358 | case -NFS4ERR_OLD_STATEID: |
359 | exception->retry = 1; | |
b064eca2 TM |
360 | break; |
361 | case -NFS4ERR_BADOWNER: | |
362 | /* The following works around a Linux server bug! */ | |
363 | case -NFS4ERR_BADNAME: | |
364 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
365 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
366 | exception->retry = 1; | |
367 | printk(KERN_WARNING "NFS: v4 server %s " | |
368 | "does not accept raw " | |
369 | "uid/gids. " | |
370 | "Reenabling the idmapper.\n", | |
371 | server->nfs_client->cl_hostname); | |
372 | } | |
65de872e TM |
373 | } |
374 | /* We failed to handle the error */ | |
375 | return nfs4_map_errors(ret); | |
0400a6b0 | 376 | wait_on_recovery: |
a2c0b9e2 TM |
377 | ret = nfs4_wait_clnt_recover(clp); |
378 | if (ret == 0) | |
379 | exception->retry = 1; | |
380 | return ret; | |
65de872e TM |
381 | } |
382 | ||
383 | ||
452e9352 | 384 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 385 | { |
1da177e4 LT |
386 | spin_lock(&clp->cl_lock); |
387 | if (time_before(clp->cl_last_renewal,timestamp)) | |
388 | clp->cl_last_renewal = timestamp; | |
389 | spin_unlock(&clp->cl_lock); | |
390 | } | |
391 | ||
452e9352 TM |
392 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
393 | { | |
394 | do_renew_lease(server->nfs_client, timestamp); | |
395 | } | |
396 | ||
cccef3b9 AA |
397 | #if defined(CONFIG_NFS_V4_1) |
398 | ||
87dda67e TM |
399 | /* |
400 | * nfs4_shrink_slot_table - free retired slots from the slot table | |
401 | */ | |
402 | static void nfs4_shrink_slot_table(struct nfs4_slot_table *tbl, u32 newsize) | |
403 | { | |
404 | struct nfs4_slot **p; | |
405 | if (newsize >= tbl->max_slots) | |
406 | return; | |
407 | ||
408 | p = &tbl->slots; | |
409 | while (newsize--) | |
410 | p = &(*p)->next; | |
411 | while (*p) { | |
412 | struct nfs4_slot *slot = *p; | |
413 | ||
414 | *p = slot->next; | |
415 | kfree(slot); | |
416 | tbl->max_slots--; | |
417 | } | |
418 | } | |
419 | ||
e2c4ab3c AA |
420 | /* |
421 | * nfs4_free_slot - free a slot and efficiently update slot table. | |
422 | * | |
423 | * freeing a slot is trivially done by clearing its respective bit | |
424 | * in the bitmap. | |
425 | * If the freed slotid equals highest_used_slotid we want to update it | |
426 | * so that the server would be able to size down the slot table if needed, | |
427 | * otherwise we know that the highest_used_slotid is still in use. | |
428 | * When updating highest_used_slotid there may be "holes" in the bitmap | |
429 | * so we need to scan down from highest_used_slotid to 0 looking for the now | |
430 | * highest slotid in use. | |
45d43c29 | 431 | * If none found, highest_used_slotid is set to NFS4_NO_SLOT. |
35dc1d74 TM |
432 | * |
433 | * Must be called while holding tbl->slot_tbl_lock | |
e2c4ab3c AA |
434 | */ |
435 | static void | |
f4af6e2a | 436 | nfs4_free_slot(struct nfs4_slot_table *tbl, struct nfs4_slot *slot) |
e2c4ab3c | 437 | { |
f4af6e2a TM |
438 | u32 slotid = slot->slot_nr; |
439 | ||
e2c4ab3c AA |
440 | /* clear used bit in bitmap */ |
441 | __clear_bit(slotid, tbl->used_slots); | |
442 | ||
443 | /* update highest_used_slotid when it is freed */ | |
444 | if (slotid == tbl->highest_used_slotid) { | |
f4af6e2a TM |
445 | u32 new_max = find_last_bit(tbl->used_slots, slotid); |
446 | if (new_max < slotid) | |
447 | tbl->highest_used_slotid = new_max; | |
e2c4ab3c | 448 | else |
45d43c29 | 449 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
e2c4ab3c | 450 | } |
45d43c29 TM |
451 | dprintk("%s: slotid %u highest_used_slotid %d\n", __func__, |
452 | slotid, tbl->highest_used_slotid); | |
e2c4ab3c AA |
453 | } |
454 | ||
961a828d TM |
455 | bool nfs4_set_task_privileged(struct rpc_task *task, void *dummy) |
456 | { | |
457 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
458 | return true; | |
e2c4ab3c AA |
459 | } |
460 | ||
3bfb0fc5 | 461 | /* |
42acd021 | 462 | * Signal state manager thread if session fore channel is drained |
3bfb0fc5 | 463 | */ |
42acd021 | 464 | static void nfs4_check_drain_fc_complete(struct nfs4_session *ses) |
3bfb0fc5 | 465 | { |
a2118c33 | 466 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state)) { |
961a828d TM |
467 | rpc_wake_up_first(&ses->fc_slot_table.slot_tbl_waitq, |
468 | nfs4_set_task_privileged, NULL); | |
3bfb0fc5 AB |
469 | return; |
470 | } | |
471 | ||
45d43c29 | 472 | if (ses->fc_slot_table.highest_used_slotid != NFS4_NO_SLOT) |
3bfb0fc5 AB |
473 | return; |
474 | ||
42acd021 AA |
475 | dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__); |
476 | complete(&ses->fc_slot_table.complete); | |
477 | } | |
478 | ||
479 | /* | |
480 | * Signal state manager thread if session back channel is drained | |
481 | */ | |
482 | void nfs4_check_drain_bc_complete(struct nfs4_session *ses) | |
483 | { | |
484 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state) || | |
45d43c29 | 485 | ses->bc_slot_table.highest_used_slotid != NFS4_NO_SLOT) |
42acd021 AA |
486 | return; |
487 | dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__); | |
488 | complete(&ses->bc_slot_table.complete); | |
3bfb0fc5 AB |
489 | } |
490 | ||
d185a334 | 491 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 | 492 | { |
e3725ec0 | 493 | struct nfs4_session *session; |
13615871 AA |
494 | struct nfs4_slot_table *tbl; |
495 | ||
dfb4f309 | 496 | if (!res->sr_slot) { |
13615871 AA |
497 | /* just wake up the next guy waiting since |
498 | * we may have not consumed a slot after all */ | |
691daf3b | 499 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 500 | return; |
13615871 | 501 | } |
e3725ec0 TM |
502 | tbl = res->sr_slot->table; |
503 | session = tbl->session; | |
ea028ac9 | 504 | |
35dc1d74 | 505 | spin_lock(&tbl->slot_tbl_lock); |
f4af6e2a | 506 | nfs4_free_slot(tbl, res->sr_slot); |
e3725ec0 | 507 | nfs4_check_drain_fc_complete(session); |
35dc1d74 | 508 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 509 | res->sr_slot = NULL; |
13615871 AA |
510 | } |
511 | ||
464ee9f9 TM |
512 | /* Update the client's idea of target_highest_slotid */ |
513 | static void nfs41_set_target_slotid_locked(struct nfs4_slot_table *tbl, | |
514 | u32 target_highest_slotid) | |
515 | { | |
97e548a9 TM |
516 | unsigned int max_slotid, i; |
517 | ||
464ee9f9 TM |
518 | if (tbl->target_highest_slotid == target_highest_slotid) |
519 | return; | |
520 | tbl->target_highest_slotid = target_highest_slotid; | |
521 | tbl->generation++; | |
97e548a9 | 522 | |
87dda67e | 523 | max_slotid = min(NFS4_MAX_SLOT_TABLE - 1, tbl->target_highest_slotid); |
97e548a9 TM |
524 | for (i = tbl->max_slotid + 1; i <= max_slotid; i++) |
525 | rpc_wake_up_next(&tbl->slot_tbl_waitq); | |
526 | tbl->max_slotid = max_slotid; | |
464ee9f9 TM |
527 | } |
528 | ||
ce008c4b TM |
529 | void nfs41_set_target_slotid(struct nfs4_slot_table *tbl, |
530 | u32 target_highest_slotid) | |
531 | { | |
532 | spin_lock(&tbl->slot_tbl_lock); | |
533 | nfs41_set_target_slotid_locked(tbl, target_highest_slotid); | |
534 | spin_unlock(&tbl->slot_tbl_lock); | |
535 | } | |
536 | ||
da0507b7 TM |
537 | static void nfs41_set_server_slotid_locked(struct nfs4_slot_table *tbl, |
538 | u32 highest_slotid) | |
539 | { | |
da0507b7 TM |
540 | if (tbl->server_highest_slotid == highest_slotid) |
541 | return; | |
542 | if (tbl->highest_used_slotid > highest_slotid) | |
543 | return; | |
87dda67e TM |
544 | /* Deallocate slots */ |
545 | nfs4_shrink_slot_table(tbl, highest_slotid + 1); | |
da0507b7 TM |
546 | tbl->server_highest_slotid = highest_slotid; |
547 | } | |
548 | ||
464ee9f9 TM |
549 | static void nfs41_update_target_slotid(struct nfs4_slot_table *tbl, |
550 | struct nfs4_slot *slot, | |
551 | struct nfs4_sequence_res *res) | |
552 | { | |
553 | spin_lock(&tbl->slot_tbl_lock); | |
554 | if (tbl->generation != slot->generation) | |
555 | goto out; | |
da0507b7 | 556 | nfs41_set_server_slotid_locked(tbl, res->sr_highest_slotid); |
464ee9f9 TM |
557 | nfs41_set_target_slotid_locked(tbl, res->sr_target_highest_slotid); |
558 | out: | |
559 | spin_unlock(&tbl->slot_tbl_lock); | |
560 | } | |
561 | ||
14516c3a | 562 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c | 563 | { |
e3725ec0 | 564 | struct nfs4_session *session; |
933602e3 | 565 | struct nfs4_slot *slot; |
b0df806c | 566 | unsigned long timestamp; |
14516c3a | 567 | struct nfs_client *clp; |
b0df806c AA |
568 | |
569 | /* | |
570 | * sr_status remains 1 if an RPC level error occurred. The server | |
571 | * may or may not have processed the sequence operation.. | |
572 | * Proceed as if the server received and processed the sequence | |
573 | * operation. | |
574 | */ | |
575 | if (res->sr_status == 1) | |
576 | res->sr_status = NFS_OK; | |
577 | ||
468f8613 BS |
578 | /* don't increment the sequence number if the task wasn't sent */ |
579 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
580 | goto out; |
581 | ||
933602e3 | 582 | slot = res->sr_slot; |
e3725ec0 | 583 | session = slot->table->session; |
933602e3 | 584 | |
691daf3b | 585 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
586 | switch (res->sr_status) { |
587 | case 0: | |
b0df806c | 588 | /* Update the slot's sequence and clientid lease timer */ |
933602e3 TM |
589 | ++slot->seq_nr; |
590 | timestamp = slot->renewal_time; | |
e3725ec0 | 591 | clp = session->clp; |
452e9352 | 592 | do_renew_lease(clp, timestamp); |
0629e370 | 593 | /* Check sequence flags */ |
b4410c2f TM |
594 | if (res->sr_status_flags != 0) |
595 | nfs4_schedule_lease_recovery(clp); | |
464ee9f9 | 596 | nfs41_update_target_slotid(slot->table, slot, res); |
14516c3a TM |
597 | break; |
598 | case -NFS4ERR_DELAY: | |
599 | /* The server detected a resend of the RPC call and | |
600 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
601 | * of RFC5661. | |
602 | */ | |
df2fabff | 603 | dprintk("%s: slot=%u seq=%u: Operation in progress\n", |
dfb4f309 | 604 | __func__, |
df2fabff | 605 | slot->slot_nr, |
933602e3 | 606 | slot->seq_nr); |
14516c3a TM |
607 | goto out_retry; |
608 | default: | |
609 | /* Just update the slot sequence no. */ | |
933602e3 | 610 | ++slot->seq_nr; |
b0df806c AA |
611 | } |
612 | out: | |
613 | /* The session may be reset by one of the error handlers. */ | |
614 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 615 | nfs41_sequence_free_slot(res); |
14516c3a TM |
616 | return 1; |
617 | out_retry: | |
d05dd4e9 | 618 | if (!rpc_restart_call(task)) |
14516c3a TM |
619 | goto out; |
620 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
621 | return 0; | |
b0df806c AA |
622 | } |
623 | ||
14516c3a TM |
624 | static int nfs4_sequence_done(struct rpc_task *task, |
625 | struct nfs4_sequence_res *res) | |
df896455 | 626 | { |
e3725ec0 | 627 | if (res->sr_slot == NULL) |
14516c3a TM |
628 | return 1; |
629 | return nfs41_sequence_done(task, res); | |
df896455 TM |
630 | } |
631 | ||
87dda67e TM |
632 | static struct nfs4_slot *nfs4_new_slot(struct nfs4_slot_table *tbl, |
633 | u32 slotid, u32 seq_init, gfp_t gfp_mask) | |
634 | { | |
635 | struct nfs4_slot *slot; | |
636 | ||
637 | slot = kzalloc(sizeof(*slot), gfp_mask); | |
638 | if (slot) { | |
639 | slot->table = tbl; | |
640 | slot->slot_nr = slotid; | |
641 | slot->seq_nr = seq_init; | |
642 | } | |
643 | return slot; | |
644 | } | |
645 | ||
646 | static struct nfs4_slot *nfs4_find_or_create_slot(struct nfs4_slot_table *tbl, | |
647 | u32 slotid, u32 seq_init, gfp_t gfp_mask) | |
648 | { | |
649 | struct nfs4_slot **p, *slot; | |
650 | ||
651 | p = &tbl->slots; | |
652 | for (;;) { | |
653 | if (*p == NULL) { | |
654 | *p = nfs4_new_slot(tbl, tbl->max_slots, | |
655 | seq_init, gfp_mask); | |
656 | if (*p == NULL) | |
657 | break; | |
658 | tbl->max_slots++; | |
659 | } | |
660 | slot = *p; | |
661 | if (slot->slot_nr == slotid) | |
662 | return slot; | |
663 | p = &slot->next; | |
664 | } | |
665 | return NULL; | |
666 | } | |
667 | ||
510b8175 | 668 | /* |
2dc03b7f | 669 | * nfs4_alloc_slot - efficiently look for a free slot |
510b8175 | 670 | * |
2dc03b7f | 671 | * nfs4_alloc_slot looks for an unset bit in the used_slots bitmap. |
510b8175 BH |
672 | * If found, we mark the slot as used, update the highest_used_slotid, |
673 | * and respectively set up the sequence operation args. | |
fbcd4abc AA |
674 | * |
675 | * Note: must be called with under the slot_tbl_lock. | |
510b8175 | 676 | */ |
2dc03b7f | 677 | static struct nfs4_slot *nfs4_alloc_slot(struct nfs4_slot_table *tbl) |
510b8175 | 678 | { |
2dc03b7f | 679 | struct nfs4_slot *ret = NULL; |
45d43c29 | 680 | u32 slotid; |
510b8175 | 681 | |
45d43c29 | 682 | dprintk("--> %s used_slots=%04lx highest_used=%u max_slots=%u\n", |
510b8175 | 683 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, |
87dda67e | 684 | tbl->max_slotid + 1); |
97e548a9 TM |
685 | slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slotid + 1); |
686 | if (slotid > tbl->max_slotid) | |
510b8175 | 687 | goto out; |
87dda67e TM |
688 | ret = nfs4_find_or_create_slot(tbl, slotid, 1, GFP_NOWAIT); |
689 | if (ret == NULL) | |
690 | goto out; | |
510b8175 | 691 | __set_bit(slotid, tbl->used_slots); |
45d43c29 TM |
692 | if (slotid > tbl->highest_used_slotid || |
693 | tbl->highest_used_slotid == NFS4_NO_SLOT) | |
510b8175 | 694 | tbl->highest_used_slotid = slotid; |
2dc03b7f | 695 | ret->renewal_time = jiffies; |
464ee9f9 | 696 | ret->generation = tbl->generation; |
2dc03b7f | 697 | |
510b8175 BH |
698 | out: |
699 | dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n", | |
2dc03b7f TM |
700 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, |
701 | ret ? ret->slot_nr : -1); | |
702 | return ret; | |
510b8175 BH |
703 | } |
704 | ||
9d12b216 TM |
705 | static void nfs41_init_sequence(struct nfs4_sequence_args *args, |
706 | struct nfs4_sequence_res *res, int cache_reply) | |
707 | { | |
2b2fa717 | 708 | args->sa_slot = NULL; |
9d12b216 TM |
709 | args->sa_cache_this = 0; |
710 | if (cache_reply) | |
711 | args->sa_cache_this = 1; | |
9d12b216 TM |
712 | res->sr_slot = NULL; |
713 | } | |
714 | ||
dc70d7b3 | 715 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
716 | struct nfs4_sequence_args *args, |
717 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
718 | struct rpc_task *task) |
719 | { | |
fbcd4abc AA |
720 | struct nfs4_slot *slot; |
721 | struct nfs4_slot_table *tbl; | |
fbcd4abc AA |
722 | |
723 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 724 | /* slot already allocated? */ |
dfb4f309 | 725 | if (res->sr_slot != NULL) |
ce5039c1 AA |
726 | return 0; |
727 | ||
fbcd4abc AA |
728 | tbl = &session->fc_slot_table; |
729 | ||
730 | spin_lock(&tbl->slot_tbl_lock); | |
a2118c33 | 731 | if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) && |
5601a00d | 732 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { |
0b1c8fc4 | 733 | /* The state manager will wait until the slot table is empty */ |
05f0d236 | 734 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
b069d94a | 735 | spin_unlock(&tbl->slot_tbl_lock); |
0b1c8fc4 | 736 | dprintk("%s session is draining\n", __func__); |
05f0d236 | 737 | return -EAGAIN; |
b069d94a AA |
738 | } |
739 | ||
689cf5c1 AB |
740 | if (!rpc_queue_empty(&tbl->slot_tbl_waitq) && |
741 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { | |
742 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
743 | spin_unlock(&tbl->slot_tbl_lock); | |
744 | dprintk("%s enforce FIFO order\n", __func__); | |
745 | return -EAGAIN; | |
746 | } | |
747 | ||
2dc03b7f TM |
748 | slot = nfs4_alloc_slot(tbl); |
749 | if (slot == NULL) { | |
fbcd4abc AA |
750 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
751 | spin_unlock(&tbl->slot_tbl_lock); | |
752 | dprintk("<-- %s: no free slots\n", __func__); | |
753 | return -EAGAIN; | |
754 | } | |
755 | spin_unlock(&tbl->slot_tbl_lock); | |
756 | ||
689cf5c1 | 757 | rpc_task_set_priority(task, RPC_PRIORITY_NORMAL); |
2b2fa717 TM |
758 | |
759 | args->sa_slot = slot; | |
fbcd4abc | 760 | |
2dc03b7f TM |
761 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, |
762 | slot->slot_nr, slot->seq_nr); | |
fbcd4abc | 763 | |
dfb4f309 | 764 | res->sr_slot = slot; |
2a6e26cd | 765 | res->sr_status_flags = 0; |
fbcd4abc AA |
766 | /* |
767 | * sr_status is only set in decode_sequence, and so will remain | |
768 | * set to 1 if an rpc level failure occurs. | |
769 | */ | |
770 | res->sr_status = 1; | |
ce5039c1 AA |
771 | return 0; |
772 | } | |
dc70d7b3 | 773 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 774 | |
035168ab | 775 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
776 | struct nfs4_sequence_args *args, |
777 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
778 | struct rpc_task *task) |
779 | { | |
035168ab | 780 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
781 | int ret = 0; |
782 | ||
9d12b216 | 783 | if (session == NULL) |
035168ab | 784 | goto out; |
035168ab | 785 | |
df2fabff | 786 | dprintk("--> %s clp %p session %p sr_slot %d\n", |
dfb4f309 | 787 | __func__, session->clp, session, res->sr_slot ? |
df2fabff | 788 | res->sr_slot->slot_nr : -1); |
ce5039c1 | 789 | |
9d12b216 | 790 | ret = nfs41_setup_sequence(session, args, res, task); |
ce5039c1 AA |
791 | out: |
792 | dprintk("<-- %s status=%d\n", __func__, ret); | |
793 | return ret; | |
794 | } | |
795 | ||
796 | struct nfs41_call_sync_data { | |
035168ab | 797 | const struct nfs_server *seq_server; |
ce5039c1 AA |
798 | struct nfs4_sequence_args *seq_args; |
799 | struct nfs4_sequence_res *seq_res; | |
ce5039c1 AA |
800 | }; |
801 | ||
802 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
803 | { | |
804 | struct nfs41_call_sync_data *data = calldata; | |
805 | ||
035168ab TM |
806 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
807 | ||
808 | if (nfs4_setup_sequence(data->seq_server, data->seq_args, | |
9d12b216 | 809 | data->seq_res, task)) |
ce5039c1 AA |
810 | return; |
811 | rpc_call_start(task); | |
812 | } | |
813 | ||
b257957e AB |
814 | static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata) |
815 | { | |
816 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
817 | nfs41_call_sync_prepare(task, calldata); | |
818 | } | |
819 | ||
69ab40c4 AA |
820 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
821 | { | |
822 | struct nfs41_call_sync_data *data = calldata; | |
823 | ||
14516c3a | 824 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
825 | } |
826 | ||
17280175 | 827 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 828 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 829 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
830 | }; |
831 | ||
17280175 | 832 | static const struct rpc_call_ops nfs41_call_priv_sync_ops = { |
b257957e AB |
833 | .rpc_call_prepare = nfs41_call_priv_sync_prepare, |
834 | .rpc_call_done = nfs41_call_sync_done, | |
835 | }; | |
836 | ||
7c513058 BS |
837 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
838 | struct nfs_server *server, | |
ce5039c1 AA |
839 | struct rpc_message *msg, |
840 | struct nfs4_sequence_args *args, | |
841 | struct nfs4_sequence_res *res, | |
b257957e | 842 | int privileged) |
ce5039c1 AA |
843 | { |
844 | int ret; | |
845 | struct rpc_task *task; | |
846 | struct nfs41_call_sync_data data = { | |
035168ab | 847 | .seq_server = server, |
ce5039c1 AA |
848 | .seq_args = args, |
849 | .seq_res = res, | |
ce5039c1 AA |
850 | }; |
851 | struct rpc_task_setup task_setup = { | |
7c513058 | 852 | .rpc_client = clnt, |
ce5039c1 AA |
853 | .rpc_message = msg, |
854 | .callback_ops = &nfs41_call_sync_ops, | |
855 | .callback_data = &data | |
856 | }; | |
857 | ||
b257957e AB |
858 | if (privileged) |
859 | task_setup.callback_ops = &nfs41_call_priv_sync_ops; | |
ce5039c1 AA |
860 | task = rpc_run_task(&task_setup); |
861 | if (IS_ERR(task)) | |
862 | ret = PTR_ERR(task); | |
863 | else { | |
864 | ret = task->tk_status; | |
865 | rpc_put_task(task); | |
866 | } | |
867 | return ret; | |
868 | } | |
869 | ||
7c513058 BS |
870 | int _nfs4_call_sync_session(struct rpc_clnt *clnt, |
871 | struct nfs_server *server, | |
cccef3b9 AA |
872 | struct rpc_message *msg, |
873 | struct nfs4_sequence_args *args, | |
874 | struct nfs4_sequence_res *res, | |
875 | int cache_reply) | |
876 | { | |
9d12b216 TM |
877 | nfs41_init_sequence(args, res, cache_reply); |
878 | return nfs4_call_sync_sequence(clnt, server, msg, args, res, 0); | |
cccef3b9 AA |
879 | } |
880 | ||
df896455 | 881 | #else |
9d12b216 TM |
882 | static inline |
883 | void nfs41_init_sequence(struct nfs4_sequence_args *args, | |
884 | struct nfs4_sequence_res *res, int cache_reply) | |
885 | { | |
886 | } | |
887 | ||
14516c3a TM |
888 | static int nfs4_sequence_done(struct rpc_task *task, |
889 | struct nfs4_sequence_res *res) | |
df896455 | 890 | { |
14516c3a | 891 | return 1; |
df896455 | 892 | } |
cccef3b9 AA |
893 | #endif /* CONFIG_NFS_V4_1 */ |
894 | ||
7c513058 BS |
895 | int _nfs4_call_sync(struct rpc_clnt *clnt, |
896 | struct nfs_server *server, | |
cccef3b9 AA |
897 | struct rpc_message *msg, |
898 | struct nfs4_sequence_args *args, | |
899 | struct nfs4_sequence_res *res, | |
900 | int cache_reply) | |
901 | { | |
9d12b216 | 902 | nfs41_init_sequence(args, res, cache_reply); |
7c513058 | 903 | return rpc_call_sync(clnt, msg, 0); |
cccef3b9 AA |
904 | } |
905 | ||
e73b83f2 | 906 | static inline |
7c513058 BS |
907 | int nfs4_call_sync(struct rpc_clnt *clnt, |
908 | struct nfs_server *server, | |
e73b83f2 BS |
909 | struct rpc_message *msg, |
910 | struct nfs4_sequence_args *args, | |
911 | struct nfs4_sequence_res *res, | |
912 | int cache_reply) | |
913 | { | |
7c513058 BS |
914 | return server->nfs_client->cl_mvops->call_sync(clnt, server, msg, |
915 | args, res, cache_reply); | |
e73b83f2 | 916 | } |
cccef3b9 | 917 | |
38478b24 | 918 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 919 | { |
38478b24 | 920 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 921 | |
38478b24 | 922 | spin_lock(&dir->i_lock); |
359d7d1c | 923 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; |
a9a4a87a | 924 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 925 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 926 | dir->i_version = cinfo->after; |
38478b24 | 927 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
928 | } |
929 | ||
e56e0b78 | 930 | struct nfs4_opendata { |
c6d00e63 | 931 | struct kref kref; |
e56e0b78 TM |
932 | struct nfs_openargs o_arg; |
933 | struct nfs_openres o_res; | |
cdd4e68b TM |
934 | struct nfs_open_confirmargs c_arg; |
935 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
936 | struct nfs4_string owner_name; |
937 | struct nfs4_string group_name; | |
e56e0b78 | 938 | struct nfs_fattr f_attr; |
e56e0b78 | 939 | struct dentry *dir; |
82a2c1b7 | 940 | struct dentry *dentry; |
e56e0b78 | 941 | struct nfs4_state_owner *owner; |
aac00a8d | 942 | struct nfs4_state *state; |
e56e0b78 | 943 | struct iattr attrs; |
26e976a8 | 944 | unsigned long timestamp; |
3e309914 | 945 | unsigned int rpc_done : 1; |
24ac23ab TM |
946 | int rpc_status; |
947 | int cancelled; | |
e56e0b78 TM |
948 | }; |
949 | ||
2ced46c2 TM |
950 | |
951 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
952 | { | |
953 | p->o_res.f_attr = &p->f_attr; | |
c1d51931 TM |
954 | p->o_res.seqid = p->o_arg.seqid; |
955 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 | 956 | p->o_res.server = p->o_arg.server; |
5f657530 | 957 | p->o_res.access_request = p->o_arg.access; |
2ced46c2 | 958 | nfs_fattr_init(&p->f_attr); |
6926afd1 | 959 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
960 | } |
961 | ||
82a2c1b7 | 962 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 963 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be TM |
964 | const struct iattr *attrs, |
965 | gfp_t gfp_mask) | |
e56e0b78 | 966 | { |
82a2c1b7 | 967 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
968 | struct inode *dir = parent->d_inode; |
969 | struct nfs_server *server = NFS_SERVER(dir); | |
970 | struct nfs4_opendata *p; | |
971 | ||
8535b2be | 972 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
973 | if (p == NULL) |
974 | goto err; | |
8535b2be | 975 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
976 | if (p->o_arg.seqid == NULL) |
977 | goto err_free; | |
82a2c1b7 AV |
978 | nfs_sb_active(dentry->d_sb); |
979 | p->dentry = dget(dentry); | |
e56e0b78 TM |
980 | p->dir = parent; |
981 | p->owner = sp; | |
982 | atomic_inc(&sp->so_count); | |
983 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
984 | p->o_arg.open_flags = flags; |
985 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
ae2bb032 WAA |
986 | /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS |
987 | * will return permission denied for all bits until close */ | |
988 | if (!(flags & O_EXCL)) { | |
989 | /* ask server to check for all possible rights as results | |
990 | * are cached */ | |
991 | p->o_arg.access = NFS4_ACCESS_READ | NFS4_ACCESS_MODIFY | | |
992 | NFS4_ACCESS_EXTEND | NFS4_ACCESS_EXECUTE; | |
ae2bb032 | 993 | } |
7539bbab | 994 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
995 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
996 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 997 | p->o_arg.name = &dentry->d_name; |
e56e0b78 TM |
998 | p->o_arg.server = server; |
999 | p->o_arg.bitmask = server->attr_bitmask; | |
1549210f | 1000 | p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; |
e56e0b78 | 1001 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; |
536e43d1 | 1002 | if (attrs != NULL && attrs->ia_valid != 0) { |
cd93710e | 1003 | __be32 verf[2]; |
d77d76ff | 1004 | |
e56e0b78 TM |
1005 | p->o_arg.u.attrs = &p->attrs; |
1006 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
1007 | |
1008 | verf[0] = jiffies; | |
1009 | verf[1] = current->pid; | |
1010 | memcpy(p->o_arg.u.verifier.data, verf, | |
1011 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 1012 | } |
cdd4e68b TM |
1013 | p->c_arg.fh = &p->o_res.fh; |
1014 | p->c_arg.stateid = &p->o_res.stateid; | |
1015 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 1016 | nfs4_init_opendata_res(p); |
c6d00e63 | 1017 | kref_init(&p->kref); |
e56e0b78 TM |
1018 | return p; |
1019 | err_free: | |
1020 | kfree(p); | |
1021 | err: | |
1022 | dput(parent); | |
1023 | return NULL; | |
1024 | } | |
1025 | ||
c6d00e63 | 1026 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 1027 | { |
c6d00e63 TM |
1028 | struct nfs4_opendata *p = container_of(kref, |
1029 | struct nfs4_opendata, kref); | |
82a2c1b7 | 1030 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
1031 | |
1032 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
1033 | if (p->state != NULL) |
1034 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
1035 | nfs4_put_state_owner(p->owner); |
1036 | dput(p->dir); | |
82a2c1b7 AV |
1037 | dput(p->dentry); |
1038 | nfs_sb_deactive(sb); | |
6926afd1 | 1039 | nfs_fattr_free_names(&p->f_attr); |
c6d00e63 TM |
1040 | kfree(p); |
1041 | } | |
1042 | ||
1043 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
1044 | { | |
1045 | if (p != NULL) | |
1046 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
1047 | } |
1048 | ||
06f814a3 TM |
1049 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
1050 | { | |
06f814a3 TM |
1051 | int ret; |
1052 | ||
06f814a3 | 1053 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
1054 | return ret; |
1055 | } | |
1056 | ||
dc0b027d | 1057 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
1058 | { |
1059 | int ret = 0; | |
dc0b027d | 1060 | |
536e43d1 | 1061 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
1062 | goto out; |
1063 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 1064 | case FMODE_READ: |
88069f77 TM |
1065 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
1066 | && state->n_rdonly != 0; | |
6ee41268 TM |
1067 | break; |
1068 | case FMODE_WRITE: | |
88069f77 TM |
1069 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
1070 | && state->n_wronly != 0; | |
6ee41268 TM |
1071 | break; |
1072 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
1073 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
1074 | && state->n_rdwr != 0; | |
6ee41268 | 1075 | } |
dc0b027d | 1076 | out: |
6ee41268 TM |
1077 | return ret; |
1078 | } | |
1079 | ||
dc0b027d | 1080 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 1081 | { |
652f89f6 TM |
1082 | if (delegation == NULL) |
1083 | return 0; | |
dc0b027d | 1084 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 1085 | return 0; |
15c831bf | 1086 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 1087 | return 0; |
b7391f44 | 1088 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
1089 | return 1; |
1090 | } | |
1091 | ||
dc0b027d | 1092 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 1093 | { |
dc0b027d | 1094 | switch (fmode) { |
e7616923 TM |
1095 | case FMODE_WRITE: |
1096 | state->n_wronly++; | |
1097 | break; | |
1098 | case FMODE_READ: | |
1099 | state->n_rdonly++; | |
1100 | break; | |
1101 | case FMODE_READ|FMODE_WRITE: | |
1102 | state->n_rdwr++; | |
1103 | } | |
dc0b027d | 1104 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
1105 | } |
1106 | ||
dc0b027d | 1107 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
1108 | { |
1109 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
f597c537 TM |
1110 | nfs4_stateid_copy(&state->stateid, stateid); |
1111 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
dc0b027d | 1112 | switch (fmode) { |
003707c7 TM |
1113 | case FMODE_READ: |
1114 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1115 | break; | |
1116 | case FMODE_WRITE: | |
1117 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1118 | break; | |
1119 | case FMODE_READ|FMODE_WRITE: | |
1120 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
1121 | } | |
e7616923 TM |
1122 | } |
1123 | ||
dc0b027d | 1124 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 1125 | { |
8bda4e4c | 1126 | write_seqlock(&state->seqlock); |
dc0b027d | 1127 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 1128 | write_sequnlock(&state->seqlock); |
003707c7 TM |
1129 | } |
1130 | ||
dc0b027d | 1131 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 1132 | { |
8bda4e4c TM |
1133 | /* |
1134 | * Protect the call to nfs4_state_set_mode_locked and | |
1135 | * serialise the stateid update | |
1136 | */ | |
1137 | write_seqlock(&state->seqlock); | |
003707c7 | 1138 | if (deleg_stateid != NULL) { |
f597c537 | 1139 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
1140 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
1141 | } | |
1142 | if (open_stateid != NULL) | |
dc0b027d | 1143 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
1144 | write_sequnlock(&state->seqlock); |
1145 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 1146 | update_open_stateflags(state, fmode); |
ec073428 | 1147 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
1148 | } |
1149 | ||
dc0b027d | 1150 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
1151 | { |
1152 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1153 | struct nfs_delegation *deleg_cur; | |
1154 | int ret = 0; | |
1155 | ||
dc0b027d | 1156 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
1157 | |
1158 | rcu_read_lock(); | |
1159 | deleg_cur = rcu_dereference(nfsi->delegation); | |
1160 | if (deleg_cur == NULL) | |
1161 | goto no_delegation; | |
1162 | ||
1163 | spin_lock(&deleg_cur->lock); | |
1164 | if (nfsi->delegation != deleg_cur || | |
dc0b027d | 1165 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
1166 | goto no_delegation_unlock; |
1167 | ||
1168 | if (delegation == NULL) | |
1169 | delegation = &deleg_cur->stateid; | |
f597c537 | 1170 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
1171 | goto no_delegation_unlock; |
1172 | ||
b7391f44 | 1173 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 1174 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
1175 | ret = 1; |
1176 | no_delegation_unlock: | |
1177 | spin_unlock(&deleg_cur->lock); | |
1178 | no_delegation: | |
1179 | rcu_read_unlock(); | |
1180 | ||
1181 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1182 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1183 | ret = 1; |
1184 | } | |
1185 | ||
1186 | return ret; | |
1187 | } | |
1188 | ||
1189 | ||
dc0b027d | 1190 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1191 | { |
1192 | struct nfs_delegation *delegation; | |
1193 | ||
1194 | rcu_read_lock(); | |
1195 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1196 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1197 | rcu_read_unlock(); |
1198 | return; | |
1199 | } | |
1200 | rcu_read_unlock(); | |
57ec14c5 | 1201 | nfs4_inode_return_delegation(inode); |
aac00a8d TM |
1202 | } |
1203 | ||
6ee41268 | 1204 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1205 | { |
1206 | struct nfs4_state *state = opendata->state; | |
1207 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1208 | struct nfs_delegation *delegation; | |
536e43d1 | 1209 | int open_mode = opendata->o_arg.open_flags & (O_EXCL|O_TRUNC); |
dc0b027d | 1210 | fmode_t fmode = opendata->o_arg.fmode; |
aac00a8d TM |
1211 | nfs4_stateid stateid; |
1212 | int ret = -EAGAIN; | |
1213 | ||
aac00a8d | 1214 | for (;;) { |
dc0b027d | 1215 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1216 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1217 | if (can_open_cached(state, fmode, open_mode)) { |
1218 | update_open_stateflags(state, fmode); | |
6ee41268 | 1219 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1220 | goto out_return_state; |
1221 | } | |
1222 | spin_unlock(&state->owner->so_lock); | |
1223 | } | |
34310430 TM |
1224 | rcu_read_lock(); |
1225 | delegation = rcu_dereference(nfsi->delegation); | |
652f89f6 | 1226 | if (!can_open_delegated(delegation, fmode)) { |
34310430 | 1227 | rcu_read_unlock(); |
aac00a8d | 1228 | break; |
34310430 | 1229 | } |
aac00a8d | 1230 | /* Save the delegation */ |
f597c537 | 1231 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1232 | rcu_read_unlock(); |
af22f94a | 1233 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
1234 | if (ret != 0) |
1235 | goto out; | |
1236 | ret = -EAGAIN; | |
34310430 TM |
1237 | |
1238 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1239 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1240 | goto out_return_state; |
aac00a8d | 1241 | } |
aac00a8d TM |
1242 | out: |
1243 | return ERR_PTR(ret); | |
1244 | out_return_state: | |
1245 | atomic_inc(&state->count); | |
1246 | return state; | |
1247 | } | |
1248 | ||
e23008ec AA |
1249 | static void |
1250 | nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state) | |
1251 | { | |
1252 | struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client; | |
1253 | struct nfs_delegation *delegation; | |
1254 | int delegation_flags = 0; | |
1255 | ||
1256 | rcu_read_lock(); | |
1257 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
1258 | if (delegation) | |
1259 | delegation_flags = delegation->flags; | |
1260 | rcu_read_unlock(); | |
1261 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { | |
1262 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1263 | "returning a delegation for " | |
1264 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
1265 | clp->cl_hostname); | |
1266 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) | |
1267 | nfs_inode_set_delegation(state->inode, | |
1268 | data->owner->so_cred, | |
1269 | &data->o_res); | |
1270 | else | |
1271 | nfs_inode_reclaim_delegation(state->inode, | |
1272 | data->owner->so_cred, | |
1273 | &data->o_res); | |
1274 | } | |
1275 | ||
1276 | /* | |
1277 | * Check the inode attributes against the CLAIM_PREVIOUS returned attributes | |
1278 | * and update the nfs4_state. | |
1279 | */ | |
1280 | static struct nfs4_state * | |
1281 | _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data) | |
1282 | { | |
1283 | struct inode *inode = data->state->inode; | |
1284 | struct nfs4_state *state = data->state; | |
1285 | int ret; | |
1286 | ||
1287 | if (!data->rpc_done) { | |
1288 | ret = data->rpc_status; | |
1289 | goto err; | |
1290 | } | |
1291 | ||
1292 | ret = -ESTALE; | |
1293 | if (!(data->f_attr.valid & NFS_ATTR_FATTR_TYPE) || | |
1294 | !(data->f_attr.valid & NFS_ATTR_FATTR_FILEID) || | |
1295 | !(data->f_attr.valid & NFS_ATTR_FATTR_CHANGE)) | |
1296 | goto err; | |
1297 | ||
1298 | ret = -ENOMEM; | |
1299 | state = nfs4_get_open_state(inode, data->owner); | |
1300 | if (state == NULL) | |
1301 | goto err; | |
1302 | ||
1303 | ret = nfs_refresh_inode(inode, &data->f_attr); | |
1304 | if (ret) | |
1305 | goto err; | |
1306 | ||
1307 | if (data->o_res.delegation_type != 0) | |
1308 | nfs4_opendata_check_deleg(data, state); | |
1309 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
1310 | data->o_arg.fmode); | |
1311 | ||
1312 | return state; | |
1313 | err: | |
1314 | return ERR_PTR(ret); | |
1315 | ||
1316 | } | |
1317 | ||
1318 | static struct nfs4_state * | |
1319 | _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
24ac23ab TM |
1320 | { |
1321 | struct inode *inode; | |
1322 | struct nfs4_state *state = NULL; | |
1b370bc2 | 1323 | int ret; |
24ac23ab | 1324 | |
aac00a8d | 1325 | if (!data->rpc_done) { |
6ee41268 | 1326 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1327 | goto out; |
1328 | } | |
1329 | ||
1b370bc2 | 1330 | ret = -EAGAIN; |
24ac23ab | 1331 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1332 | goto err; |
24ac23ab | 1333 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 1334 | ret = PTR_ERR(inode); |
03f28e3a | 1335 | if (IS_ERR(inode)) |
1b370bc2 TM |
1336 | goto err; |
1337 | ret = -ENOMEM; | |
24ac23ab TM |
1338 | state = nfs4_get_open_state(inode, data->owner); |
1339 | if (state == NULL) | |
1b370bc2 | 1340 | goto err_put_inode; |
e23008ec AA |
1341 | if (data->o_res.delegation_type != 0) |
1342 | nfs4_opendata_check_deleg(data, state); | |
34310430 | 1343 | update_open_stateid(state, &data->o_res.stateid, NULL, |
dc0b027d | 1344 | data->o_arg.fmode); |
24ac23ab | 1345 | iput(inode); |
aac00a8d | 1346 | out: |
24ac23ab | 1347 | return state; |
1b370bc2 TM |
1348 | err_put_inode: |
1349 | iput(inode); | |
1350 | err: | |
1351 | return ERR_PTR(ret); | |
24ac23ab TM |
1352 | } |
1353 | ||
e23008ec AA |
1354 | static struct nfs4_state * |
1355 | nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
1356 | { | |
1357 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) | |
1358 | return _nfs4_opendata_reclaim_to_nfs4_state(data); | |
1359 | return _nfs4_opendata_to_nfs4_state(data); | |
1360 | } | |
1361 | ||
864472e9 TM |
1362 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1363 | { | |
1364 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1365 | struct nfs_open_context *ctx; | |
1366 | ||
1367 | spin_lock(&state->inode->i_lock); | |
1368 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1369 | if (ctx->state != state) | |
1370 | continue; | |
1371 | get_nfs_open_context(ctx); | |
1372 | spin_unlock(&state->inode->i_lock); | |
1373 | return ctx; | |
1374 | } | |
1375 | spin_unlock(&state->inode->i_lock); | |
1376 | return ERR_PTR(-ENOENT); | |
1377 | } | |
1378 | ||
6f220ed5 TM |
1379 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
1380 | { | |
1381 | struct nfs4_opendata *opendata; | |
1382 | ||
3d4ff43d | 1383 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, NULL, GFP_NOFS); |
6f220ed5 TM |
1384 | if (opendata == NULL) |
1385 | return ERR_PTR(-ENOMEM); | |
1386 | opendata->state = state; | |
1387 | atomic_inc(&state->count); | |
1388 | return opendata; | |
1389 | } | |
1390 | ||
dc0b027d | 1391 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1392 | { |
2ced46c2 | 1393 | struct nfs4_state *newstate; |
864472e9 TM |
1394 | int ret; |
1395 | ||
dc0b027d TM |
1396 | opendata->o_arg.open_flags = 0; |
1397 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1398 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1399 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1400 | nfs4_init_opendata_res(opendata); | |
b257957e | 1401 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1402 | if (ret != 0) |
1403 | return ret; | |
2ced46c2 | 1404 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1405 | if (IS_ERR(newstate)) |
1406 | return PTR_ERR(newstate); | |
643168c2 | 1407 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1408 | *res = newstate; |
864472e9 TM |
1409 | return 0; |
1410 | } | |
1411 | ||
1412 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1413 | { | |
864472e9 | 1414 | struct nfs4_state *newstate; |
864472e9 TM |
1415 | int ret; |
1416 | ||
1417 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1418 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1419 | smp_rmb(); |
1420 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1421 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1422 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1423 | if (ret != 0) |
1424 | return ret; | |
2ced46c2 TM |
1425 | if (newstate != state) |
1426 | return -ESTALE; | |
864472e9 TM |
1427 | } |
1428 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1429 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1430 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1431 | if (ret != 0) |
1432 | return ret; | |
2ced46c2 TM |
1433 | if (newstate != state) |
1434 | return -ESTALE; | |
864472e9 TM |
1435 | } |
1436 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1437 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1438 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1439 | if (ret != 0) |
1440 | return ret; | |
2ced46c2 TM |
1441 | if (newstate != state) |
1442 | return -ESTALE; | |
864472e9 | 1443 | } |
1ac7e2fd TM |
1444 | /* |
1445 | * We may have performed cached opens for all three recoveries. | |
1446 | * Check if we need to update the current stateid. | |
1447 | */ | |
1448 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1449 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1450 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1451 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1452 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1453 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1454 | } |
864472e9 TM |
1455 | return 0; |
1456 | } | |
1457 | ||
1da177e4 LT |
1458 | /* |
1459 | * OPEN_RECLAIM: | |
1460 | * reclaim state on the server after a reboot. | |
1da177e4 | 1461 | */ |
539cd03a | 1462 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1463 | { |
1ac7e2fd | 1464 | struct nfs_delegation *delegation; |
864472e9 | 1465 | struct nfs4_opendata *opendata; |
dc0b027d | 1466 | fmode_t delegation_type = 0; |
1da177e4 LT |
1467 | int status; |
1468 | ||
6f220ed5 TM |
1469 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1470 | if (IS_ERR(opendata)) | |
1471 | return PTR_ERR(opendata); | |
864472e9 TM |
1472 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1473 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1474 | rcu_read_lock(); |
1475 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1476 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1477 | delegation_type = delegation->type; |
1ac7e2fd | 1478 | rcu_read_unlock(); |
864472e9 TM |
1479 | opendata->o_arg.u.delegation_type = delegation_type; |
1480 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1481 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1482 | return status; |
1483 | } | |
1484 | ||
539cd03a | 1485 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1486 | { |
1487 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1488 | struct nfs4_exception exception = { }; | |
1489 | int err; | |
1490 | do { | |
539cd03a | 1491 | err = _nfs4_do_open_reclaim(ctx, state); |
168667c4 | 1492 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1493 | break; |
1494 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1495 | } while (exception.retry); |
1496 | return err; | |
1497 | } | |
1498 | ||
864472e9 TM |
1499 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1500 | { | |
1501 | struct nfs_open_context *ctx; | |
1502 | int ret; | |
1503 | ||
1504 | ctx = nfs4_state_find_open_context(state); | |
1505 | if (IS_ERR(ctx)) | |
1506 | return PTR_ERR(ctx); | |
539cd03a | 1507 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1508 | put_nfs_open_context(ctx); |
1509 | return ret; | |
1510 | } | |
1511 | ||
13437e12 | 1512 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1513 | { |
e56e0b78 | 1514 | struct nfs4_opendata *opendata; |
864472e9 | 1515 | int ret; |
1da177e4 | 1516 | |
6f220ed5 TM |
1517 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1518 | if (IS_ERR(opendata)) | |
1519 | return PTR_ERR(opendata); | |
e56e0b78 | 1520 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
f597c537 | 1521 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); |
864472e9 | 1522 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1523 | nfs4_opendata_put(opendata); |
864472e9 | 1524 | return ret; |
1da177e4 LT |
1525 | } |
1526 | ||
13437e12 | 1527 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1528 | { |
1529 | struct nfs4_exception exception = { }; | |
539cd03a | 1530 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1531 | int err; |
1532 | do { | |
13437e12 | 1533 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1534 | switch (err) { |
1535 | case 0: | |
965b5d67 TM |
1536 | case -ENOENT: |
1537 | case -ESTALE: | |
1538 | goto out; | |
bcfa49f6 RL |
1539 | case -NFS4ERR_BADSESSION: |
1540 | case -NFS4ERR_BADSLOT: | |
1541 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1542 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1543 | case -NFS4ERR_DEADSESSION: | |
9f594791 | 1544 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); |
bcfa49f6 | 1545 | goto out; |
1da177e4 LT |
1546 | case -NFS4ERR_STALE_CLIENTID: |
1547 | case -NFS4ERR_STALE_STATEID: | |
1548 | case -NFS4ERR_EXPIRED: | |
1549 | /* Don't recall a delegation if it was lost */ | |
0400a6b0 | 1550 | nfs4_schedule_lease_recovery(server->nfs_client); |
965b5d67 TM |
1551 | goto out; |
1552 | case -ERESTARTSYS: | |
1553 | /* | |
1554 | * The show must go on: exit, but mark the | |
1555 | * stateid as needing recovery. | |
1556 | */ | |
a1d0b5ee | 1557 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
1558 | case -NFS4ERR_ADMIN_REVOKED: |
1559 | case -NFS4ERR_BAD_STATEID: | |
a1d0b5ee TM |
1560 | nfs_inode_find_state_and_recover(state->inode, |
1561 | stateid); | |
0400a6b0 | 1562 | nfs4_schedule_stateid_recovery(server, state); |
168667c4 TM |
1563 | case -EKEYEXPIRED: |
1564 | /* | |
1565 | * User RPCSEC_GSS context has expired. | |
1566 | * We cannot recover this stateid now, so | |
1567 | * skip it and allow recovery thread to | |
1568 | * proceed. | |
1569 | */ | |
965b5d67 TM |
1570 | case -ENOMEM: |
1571 | err = 0; | |
1572 | goto out; | |
1da177e4 LT |
1573 | } |
1574 | err = nfs4_handle_exception(server, err, &exception); | |
1575 | } while (exception.retry); | |
965b5d67 | 1576 | out: |
1da177e4 LT |
1577 | return err; |
1578 | } | |
1579 | ||
cdd4e68b TM |
1580 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1581 | { | |
1582 | struct nfs4_opendata *data = calldata; | |
1583 | ||
1584 | data->rpc_status = task->tk_status; | |
26e976a8 | 1585 | if (data->rpc_status == 0) { |
f597c537 | 1586 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1587 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1588 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1589 | data->rpc_done = 1; |
26e976a8 | 1590 | } |
cdd4e68b TM |
1591 | } |
1592 | ||
1593 | static void nfs4_open_confirm_release(void *calldata) | |
1594 | { | |
1595 | struct nfs4_opendata *data = calldata; | |
1596 | struct nfs4_state *state = NULL; | |
1597 | ||
1598 | /* If this request hasn't been cancelled, do nothing */ | |
1599 | if (data->cancelled == 0) | |
1600 | goto out_free; | |
1601 | /* In case of error, no cleanup! */ | |
3e309914 | 1602 | if (!data->rpc_done) |
cdd4e68b | 1603 | goto out_free; |
cdd4e68b | 1604 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1605 | if (!IS_ERR(state)) |
643168c2 | 1606 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1607 | out_free: |
c6d00e63 | 1608 | nfs4_opendata_put(data); |
cdd4e68b TM |
1609 | } |
1610 | ||
1611 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1612 | .rpc_call_done = nfs4_open_confirm_done, |
1613 | .rpc_release = nfs4_open_confirm_release, | |
1614 | }; | |
1615 | ||
1616 | /* | |
1617 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1618 | */ | |
1619 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1620 | { | |
1621 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1622 | struct rpc_task *task; | |
5138fde0 TM |
1623 | struct rpc_message msg = { |
1624 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1625 | .rpc_argp = &data->c_arg, | |
1626 | .rpc_resp = &data->c_res, | |
1627 | .rpc_cred = data->owner->so_cred, | |
1628 | }; | |
c970aa85 TM |
1629 | struct rpc_task_setup task_setup_data = { |
1630 | .rpc_client = server->client, | |
5138fde0 | 1631 | .rpc_message = &msg, |
c970aa85 TM |
1632 | .callback_ops = &nfs4_open_confirm_ops, |
1633 | .callback_data = data, | |
101070ca | 1634 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1635 | .flags = RPC_TASK_ASYNC, |
1636 | }; | |
1da177e4 LT |
1637 | int status; |
1638 | ||
c6d00e63 | 1639 | kref_get(&data->kref); |
3e309914 TM |
1640 | data->rpc_done = 0; |
1641 | data->rpc_status = 0; | |
5138fde0 | 1642 | data->timestamp = jiffies; |
c970aa85 | 1643 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1644 | if (IS_ERR(task)) |
cdd4e68b | 1645 | return PTR_ERR(task); |
cdd4e68b TM |
1646 | status = nfs4_wait_for_completion_rpc_task(task); |
1647 | if (status != 0) { | |
1648 | data->cancelled = 1; | |
1649 | smp_wmb(); | |
1650 | } else | |
1651 | status = data->rpc_status; | |
e6b3c4db | 1652 | rpc_put_task(task); |
1da177e4 LT |
1653 | return status; |
1654 | } | |
1655 | ||
24ac23ab | 1656 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1657 | { |
24ac23ab TM |
1658 | struct nfs4_opendata *data = calldata; |
1659 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1660 | |
24ac23ab TM |
1661 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
1662 | return; | |
aac00a8d TM |
1663 | /* |
1664 | * Check if we still need to send an OPEN call, or if we can use | |
1665 | * a delegation instead. | |
1666 | */ | |
1667 | if (data->state != NULL) { | |
1668 | struct nfs_delegation *delegation; | |
1669 | ||
dc0b027d | 1670 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1671 | goto out_no_action; |
aac00a8d TM |
1672 | rcu_read_lock(); |
1673 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 TM |
1674 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
1675 | can_open_delegated(delegation, data->o_arg.fmode)) | |
1676 | goto unlock_no_action; | |
aac00a8d TM |
1677 | rcu_read_unlock(); |
1678 | } | |
95b72eb0 | 1679 | /* Update client id. */ |
1f0e890d | 1680 | data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; |
6f220ed5 | 1681 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1682 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
e23008ec | 1683 | data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0]; |
6f220ed5 TM |
1684 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1685 | } | |
26e976a8 | 1686 | data->timestamp = jiffies; |
035168ab | 1687 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1688 | &data->o_arg.seq_args, |
2240a9e2 TM |
1689 | &data->o_res.seq_res, |
1690 | task) != 0) | |
1691 | nfs_release_seqid(data->o_arg.seqid); | |
1692 | else | |
1693 | rpc_call_start(task); | |
6ee41268 | 1694 | return; |
652f89f6 TM |
1695 | unlock_no_action: |
1696 | rcu_read_unlock(); | |
6ee41268 TM |
1697 | out_no_action: |
1698 | task->tk_action = NULL; | |
1699 | ||
24ac23ab | 1700 | } |
1da177e4 | 1701 | |
b257957e AB |
1702 | static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata) |
1703 | { | |
1704 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
1705 | nfs4_open_prepare(task, calldata); | |
1706 | } | |
1707 | ||
24ac23ab TM |
1708 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1709 | { | |
1710 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1711 | |
24ac23ab | 1712 | data->rpc_status = task->tk_status; |
d898528c | 1713 | |
14516c3a TM |
1714 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1715 | return; | |
d898528c | 1716 | |
24ac23ab | 1717 | if (task->tk_status == 0) { |
807d66d8 TM |
1718 | if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) { |
1719 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1720 | case S_IFREG: |
1721 | break; | |
1722 | case S_IFLNK: | |
24ac23ab | 1723 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1724 | break; |
1725 | case S_IFDIR: | |
24ac23ab | 1726 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1727 | break; |
1728 | default: | |
24ac23ab | 1729 | data->rpc_status = -ENOTDIR; |
807d66d8 | 1730 | } |
6f926b5b | 1731 | } |
26e976a8 | 1732 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1733 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1734 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1735 | } |
3e309914 | 1736 | data->rpc_done = 1; |
24ac23ab | 1737 | } |
6f926b5b | 1738 | |
24ac23ab TM |
1739 | static void nfs4_open_release(void *calldata) |
1740 | { | |
1741 | struct nfs4_opendata *data = calldata; | |
1742 | struct nfs4_state *state = NULL; | |
1743 | ||
1744 | /* If this request hasn't been cancelled, do nothing */ | |
1745 | if (data->cancelled == 0) | |
1746 | goto out_free; | |
1747 | /* In case of error, no cleanup! */ | |
3e309914 | 1748 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1749 | goto out_free; |
1750 | /* In case we need an open_confirm, no cleanup! */ | |
1751 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1752 | goto out_free; | |
24ac23ab | 1753 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1754 | if (!IS_ERR(state)) |
643168c2 | 1755 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1756 | out_free: |
c6d00e63 | 1757 | nfs4_opendata_put(data); |
24ac23ab TM |
1758 | } |
1759 | ||
1760 | static const struct rpc_call_ops nfs4_open_ops = { | |
1761 | .rpc_call_prepare = nfs4_open_prepare, | |
1762 | .rpc_call_done = nfs4_open_done, | |
1763 | .rpc_release = nfs4_open_release, | |
1764 | }; | |
1765 | ||
b257957e AB |
1766 | static const struct rpc_call_ops nfs4_recover_open_ops = { |
1767 | .rpc_call_prepare = nfs4_recover_open_prepare, | |
1768 | .rpc_call_done = nfs4_open_done, | |
1769 | .rpc_release = nfs4_open_release, | |
1770 | }; | |
1771 | ||
1772 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) | |
24ac23ab TM |
1773 | { |
1774 | struct inode *dir = data->dir->d_inode; | |
1775 | struct nfs_server *server = NFS_SERVER(dir); | |
1776 | struct nfs_openargs *o_arg = &data->o_arg; | |
1777 | struct nfs_openres *o_res = &data->o_res; | |
1778 | struct rpc_task *task; | |
5138fde0 TM |
1779 | struct rpc_message msg = { |
1780 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1781 | .rpc_argp = o_arg, | |
1782 | .rpc_resp = o_res, | |
1783 | .rpc_cred = data->owner->so_cred, | |
1784 | }; | |
c970aa85 TM |
1785 | struct rpc_task_setup task_setup_data = { |
1786 | .rpc_client = server->client, | |
5138fde0 | 1787 | .rpc_message = &msg, |
c970aa85 TM |
1788 | .callback_ops = &nfs4_open_ops, |
1789 | .callback_data = data, | |
101070ca | 1790 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1791 | .flags = RPC_TASK_ASYNC, |
1792 | }; | |
24ac23ab TM |
1793 | int status; |
1794 | ||
9d12b216 | 1795 | nfs41_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 1796 | kref_get(&data->kref); |
3e309914 TM |
1797 | data->rpc_done = 0; |
1798 | data->rpc_status = 0; | |
2ced46c2 | 1799 | data->cancelled = 0; |
b257957e AB |
1800 | if (isrecover) |
1801 | task_setup_data.callback_ops = &nfs4_recover_open_ops; | |
c970aa85 | 1802 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1803 | if (IS_ERR(task)) |
1804 | return PTR_ERR(task); | |
1805 | status = nfs4_wait_for_completion_rpc_task(task); | |
1806 | if (status != 0) { | |
1807 | data->cancelled = 1; | |
1808 | smp_wmb(); | |
1809 | } else | |
1810 | status = data->rpc_status; | |
1811 | rpc_put_task(task); | |
1812 | ||
1813 | return status; | |
1814 | } | |
1815 | ||
1816 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1817 | { | |
1818 | struct inode *dir = data->dir->d_inode; | |
1819 | struct nfs_openres *o_res = &data->o_res; | |
1820 | int status; | |
1821 | ||
1822 | status = nfs4_run_open_task(data, 1); | |
1823 | if (status != 0 || !data->rpc_done) | |
1824 | return status; | |
1825 | ||
6926afd1 TM |
1826 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
1827 | ||
b257957e AB |
1828 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
1829 | status = _nfs4_proc_open_confirm(data); | |
1830 | if (status != 0) | |
1831 | return status; | |
1832 | } | |
1833 | ||
1834 | return status; | |
1835 | } | |
1836 | ||
6168f62c WAA |
1837 | static int nfs4_opendata_access(struct rpc_cred *cred, |
1838 | struct nfs4_opendata *opendata, | |
1839 | struct nfs4_state *state, fmode_t fmode) | |
1840 | { | |
1841 | struct nfs_access_entry cache; | |
1842 | u32 mask; | |
1843 | ||
1844 | /* access call failed or for some reason the server doesn't | |
1845 | * support any access modes -- defer access call until later */ | |
1846 | if (opendata->o_res.access_supported == 0) | |
1847 | return 0; | |
1848 | ||
1849 | mask = 0; | |
bbd3a8ee WAA |
1850 | /* don't check MAY_WRITE - a newly created file may not have |
1851 | * write mode bits, but POSIX allows the creating process to write */ | |
6168f62c WAA |
1852 | if (fmode & FMODE_READ) |
1853 | mask |= MAY_READ; | |
6168f62c WAA |
1854 | if (fmode & FMODE_EXEC) |
1855 | mask |= MAY_EXEC; | |
1856 | ||
1857 | cache.cred = cred; | |
1858 | cache.jiffies = jiffies; | |
1859 | nfs_access_set_mask(&cache, opendata->o_res.access_result); | |
1860 | nfs_access_add_cache(state->inode, &cache); | |
1861 | ||
bbd3a8ee | 1862 | if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0) |
6168f62c WAA |
1863 | return 0; |
1864 | ||
1865 | /* even though OPEN succeeded, access is denied. Close the file */ | |
1866 | nfs4_close_state(state, fmode); | |
998f40b5 | 1867 | return -EACCES; |
6168f62c WAA |
1868 | } |
1869 | ||
b257957e AB |
1870 | /* |
1871 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1872 | */ | |
1873 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1874 | { | |
1875 | struct inode *dir = data->dir->d_inode; | |
1876 | struct nfs_server *server = NFS_SERVER(dir); | |
1877 | struct nfs_openargs *o_arg = &data->o_arg; | |
1878 | struct nfs_openres *o_res = &data->o_res; | |
1879 | int status; | |
1880 | ||
1881 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
1882 | if (!data->rpc_done) |
1883 | return status; | |
1884 | if (status != 0) { | |
1885 | if (status == -NFS4ERR_BADNAME && | |
1886 | !(o_arg->open_flags & O_CREAT)) | |
1887 | return -ENOENT; | |
24ac23ab | 1888 | return status; |
08ef7bd3 | 1889 | } |
24ac23ab | 1890 | |
6926afd1 TM |
1891 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
1892 | ||
90ff0c54 | 1893 | if (o_arg->open_flags & O_CREAT) |
56ae19f3 | 1894 | update_changeattr(dir, &o_res->cinfo); |
0df5dd4a TM |
1895 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1896 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1897 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1898 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1899 | if (status != 0) |
24ac23ab | 1900 | return status; |
1da177e4 LT |
1901 | } |
1902 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1903 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1904 | return 0; |
1da177e4 LT |
1905 | } |
1906 | ||
d83217c1 | 1907 | static int nfs4_client_recover_expired_lease(struct nfs_client *clp) |
58d9714a | 1908 | { |
a78cb57a | 1909 | unsigned int loop; |
6b30954e | 1910 | int ret; |
58d9714a | 1911 | |
a78cb57a | 1912 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { |
65de872e | 1913 | ret = nfs4_wait_clnt_recover(clp); |
6b30954e | 1914 | if (ret != 0) |
a78cb57a | 1915 | break; |
e598d843 TM |
1916 | if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) && |
1917 | !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state)) | |
6b30954e | 1918 | break; |
0400a6b0 | 1919 | nfs4_schedule_state_manager(clp); |
a78cb57a | 1920 | ret = -EIO; |
6b30954e | 1921 | } |
a78cb57a | 1922 | return ret; |
58d9714a TM |
1923 | } |
1924 | ||
d83217c1 AA |
1925 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1926 | { | |
1927 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1928 | } | |
1929 | ||
1da177e4 LT |
1930 | /* |
1931 | * OPEN_EXPIRED: | |
1932 | * reclaim state on the server after a network partition. | |
1933 | * Assumes caller holds the appropriate lock | |
1934 | */ | |
539cd03a | 1935 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1936 | { |
e56e0b78 | 1937 | struct nfs4_opendata *opendata; |
864472e9 | 1938 | int ret; |
1da177e4 | 1939 | |
6f220ed5 TM |
1940 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1941 | if (IS_ERR(opendata)) | |
1942 | return PTR_ERR(opendata); | |
864472e9 | 1943 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1944 | if (ret == -ESTALE) |
3d4ff43d | 1945 | d_drop(ctx->dentry); |
c6d00e63 | 1946 | nfs4_opendata_put(opendata); |
864472e9 | 1947 | return ret; |
1da177e4 LT |
1948 | } |
1949 | ||
a9ed2e25 | 1950 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1951 | { |
539cd03a | 1952 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1953 | struct nfs4_exception exception = { }; |
1954 | int err; | |
1955 | ||
1956 | do { | |
539cd03a | 1957 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1958 | switch (err) { |
1959 | default: | |
1960 | goto out; | |
1961 | case -NFS4ERR_GRACE: | |
1962 | case -NFS4ERR_DELAY: | |
1963 | nfs4_handle_exception(server, err, &exception); | |
1964 | err = 0; | |
1965 | } | |
202b50dc | 1966 | } while (exception.retry); |
a9ed2e25 | 1967 | out: |
202b50dc TM |
1968 | return err; |
1969 | } | |
1970 | ||
1da177e4 LT |
1971 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1972 | { | |
1da177e4 | 1973 | struct nfs_open_context *ctx; |
864472e9 | 1974 | int ret; |
1da177e4 | 1975 | |
864472e9 TM |
1976 | ctx = nfs4_state_find_open_context(state); |
1977 | if (IS_ERR(ctx)) | |
1978 | return PTR_ERR(ctx); | |
539cd03a | 1979 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1980 | put_nfs_open_context(ctx); |
1981 | return ret; | |
1da177e4 LT |
1982 | } |
1983 | ||
f062eb6c | 1984 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd | 1985 | static void nfs41_clear_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 1986 | { |
f062eb6c | 1987 | struct nfs_server *server = NFS_SERVER(state->inode); |
3e60ffdd CL |
1988 | nfs4_stateid *stateid = &state->stateid; |
1989 | int status; | |
1990 | ||
1991 | /* If a state reset has been done, test_stateid is unneeded */ | |
1992 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
1993 | return; | |
1994 | ||
1995 | status = nfs41_test_stateid(server, stateid); | |
1996 | if (status != NFS_OK) { | |
1997 | /* Free the stateid unless the server explicitly | |
1998 | * informs us the stateid is unrecognized. */ | |
1999 | if (status != -NFS4ERR_BAD_STATEID) | |
2000 | nfs41_free_stateid(server, stateid); | |
6938867e | 2001 | nfs_remove_bad_delegation(state->inode); |
3e60ffdd | 2002 | |
6938867e BS |
2003 | write_seqlock(&state->seqlock); |
2004 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
2005 | write_sequnlock(&state->seqlock); | |
3e60ffdd CL |
2006 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
2007 | } | |
2008 | } | |
2009 | ||
2010 | /** | |
2011 | * nfs41_check_open_stateid - possibly free an open stateid | |
2012 | * | |
2013 | * @state: NFSv4 state for an inode | |
2014 | * | |
2015 | * Returns NFS_OK if recovery for this stateid is now finished. | |
2016 | * Otherwise a negative NFS4ERR value is returned. | |
2017 | */ | |
2018 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
2019 | { | |
2020 | struct nfs_server *server = NFS_SERVER(state->inode); | |
fcb6d9c6 | 2021 | nfs4_stateid *stateid = &state->open_stateid; |
3e60ffdd CL |
2022 | int status; |
2023 | ||
2024 | /* If a state reset has been done, test_stateid is unneeded */ | |
2025 | if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && | |
2026 | (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && | |
2027 | (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) | |
2028 | return -NFS4ERR_BAD_STATEID; | |
2029 | ||
2030 | status = nfs41_test_stateid(server, stateid); | |
2031 | if (status != NFS_OK) { | |
2032 | /* Free the stateid unless the server explicitly | |
2033 | * informs us the stateid is unrecognized. */ | |
2034 | if (status != -NFS4ERR_BAD_STATEID) | |
2035 | nfs41_free_stateid(server, stateid); | |
2036 | ||
2037 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2038 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2039 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
b01dd1d8 BS |
2040 | } |
2041 | return status; | |
2042 | } | |
2043 | ||
2044 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
2045 | { | |
eb64cf96 | 2046 | int status; |
b01dd1d8 | 2047 | |
3e60ffdd CL |
2048 | nfs41_clear_delegation_stateid(state); |
2049 | status = nfs41_check_open_stateid(state); | |
eb64cf96 CL |
2050 | if (status != NFS_OK) |
2051 | status = nfs4_open_expired(sp, state); | |
2052 | return status; | |
f062eb6c BS |
2053 | } |
2054 | #endif | |
2055 | ||
aa53ed54 JL |
2056 | /* |
2057 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
2058 | * fields corresponding to attributes that were used to store the verifier. | |
2059 | * Make sure we clobber those fields in the later setattr call | |
2060 | */ | |
2061 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
2062 | { | |
2063 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
2064 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
2065 | sattr->ia_valid |= ATTR_ATIME; | |
2066 | ||
2067 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
2068 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
2069 | sattr->ia_valid |= ATTR_MTIME; | |
2070 | } | |
2071 | ||
1da177e4 | 2072 | /* |
24ac23ab | 2073 | * Returns a referenced nfs4_state |
1da177e4 | 2074 | */ |
82be417a AA |
2075 | static int _nfs4_do_open(struct inode *dir, |
2076 | struct dentry *dentry, | |
2077 | fmode_t fmode, | |
2078 | int flags, | |
2079 | struct iattr *sattr, | |
2080 | struct rpc_cred *cred, | |
2081 | struct nfs4_state **res, | |
2082 | struct nfs4_threshold **ctx_th) | |
1da177e4 LT |
2083 | { |
2084 | struct nfs4_state_owner *sp; | |
2085 | struct nfs4_state *state = NULL; | |
2086 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 2087 | struct nfs4_opendata *opendata; |
aac00a8d | 2088 | int status; |
1da177e4 LT |
2089 | |
2090 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 2091 | status = -ENOMEM; |
d1e284d5 TM |
2092 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
2093 | if (sp == NULL) { | |
1da177e4 LT |
2094 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
2095 | goto out_err; | |
2096 | } | |
58d9714a TM |
2097 | status = nfs4_recover_expired_lease(server); |
2098 | if (status != 0) | |
b4454fe1 | 2099 | goto err_put_state_owner; |
82a2c1b7 AV |
2100 | if (dentry->d_inode != NULL) |
2101 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 2102 | status = -ENOMEM; |
82a2c1b7 | 2103 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, GFP_KERNEL); |
e56e0b78 | 2104 | if (opendata == NULL) |
95d35cb4 | 2105 | goto err_put_state_owner; |
1da177e4 | 2106 | |
82be417a AA |
2107 | if (ctx_th && server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
2108 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
2109 | if (!opendata->f_attr.mdsthreshold) | |
2110 | goto err_opendata_put; | |
1549210f | 2111 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 2112 | } |
82a2c1b7 AV |
2113 | if (dentry->d_inode != NULL) |
2114 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 2115 | |
24ac23ab | 2116 | status = _nfs4_proc_open(opendata); |
1da177e4 | 2117 | if (status != 0) |
c6d00e63 | 2118 | goto err_opendata_put; |
1da177e4 | 2119 | |
24ac23ab | 2120 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
2121 | status = PTR_ERR(state); |
2122 | if (IS_ERR(state)) | |
c6d00e63 | 2123 | goto err_opendata_put; |
0df5dd4a | 2124 | if (server->caps & NFS_CAP_POSIX_LOCK) |
8e469ebd | 2125 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); |
0ab64e0e | 2126 | |
6168f62c WAA |
2127 | status = nfs4_opendata_access(cred, opendata, state, fmode); |
2128 | if (status != 0) | |
2129 | goto err_opendata_put; | |
2130 | ||
0ab64e0e TM |
2131 | if (opendata->o_arg.open_flags & O_EXCL) { |
2132 | nfs4_exclusive_attrset(opendata, sattr); | |
2133 | ||
2134 | nfs_fattr_init(opendata->o_res.f_attr); | |
2135 | status = nfs4_do_setattr(state->inode, cred, | |
2136 | opendata->o_res.f_attr, sattr, | |
2137 | state); | |
2138 | if (status == 0) | |
2139 | nfs_setattr_update_inode(state->inode, sattr); | |
2140 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
2141 | } | |
82be417a AA |
2142 | |
2143 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) | |
2144 | *ctx_th = opendata->f_attr.mdsthreshold; | |
2145 | else | |
2146 | kfree(opendata->f_attr.mdsthreshold); | |
2147 | opendata->f_attr.mdsthreshold = NULL; | |
2148 | ||
c6d00e63 | 2149 | nfs4_opendata_put(opendata); |
1da177e4 | 2150 | nfs4_put_state_owner(sp); |
1da177e4 LT |
2151 | *res = state; |
2152 | return 0; | |
c6d00e63 | 2153 | err_opendata_put: |
82be417a | 2154 | kfree(opendata->f_attr.mdsthreshold); |
c6d00e63 | 2155 | nfs4_opendata_put(opendata); |
e56e0b78 TM |
2156 | err_put_state_owner: |
2157 | nfs4_put_state_owner(sp); | |
1da177e4 | 2158 | out_err: |
1da177e4 LT |
2159 | *res = NULL; |
2160 | return status; | |
2161 | } | |
2162 | ||
2163 | ||
82be417a AA |
2164 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
2165 | struct dentry *dentry, | |
2166 | fmode_t fmode, | |
2167 | int flags, | |
2168 | struct iattr *sattr, | |
2169 | struct rpc_cred *cred, | |
2170 | struct nfs4_threshold **ctx_th) | |
1da177e4 LT |
2171 | { |
2172 | struct nfs4_exception exception = { }; | |
2173 | struct nfs4_state *res; | |
2174 | int status; | |
2175 | ||
6168f62c | 2176 | fmode &= FMODE_READ|FMODE_WRITE|FMODE_EXEC; |
1da177e4 | 2177 | do { |
82be417a AA |
2178 | status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, cred, |
2179 | &res, ctx_th); | |
1da177e4 LT |
2180 | if (status == 0) |
2181 | break; | |
2182 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
2183 | * book-keeping w.r.t. state-changing operations | |
2184 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
2185 | * It is actually a sign of a bug on the client or on the server. | |
2186 | * | |
2187 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 2188 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
2189 | * have unhashed the old state_owner for us, and that we can |
2190 | * therefore safely retry using a new one. We should still warn | |
2191 | * the user though... | |
2192 | */ | |
2193 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 2194 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
2195 | " returned a bad sequence-id error!\n", |
2196 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
2197 | exception.retry = 1; |
2198 | continue; | |
2199 | } | |
550f5747 TM |
2200 | /* |
2201 | * BAD_STATEID on OPEN means that the server cancelled our | |
2202 | * state before it received the OPEN_CONFIRM. | |
2203 | * Recover by retrying the request as per the discussion | |
2204 | * on Page 181 of RFC3530. | |
2205 | */ | |
2206 | if (status == -NFS4ERR_BAD_STATEID) { | |
2207 | exception.retry = 1; | |
2208 | continue; | |
2209 | } | |
aac00a8d TM |
2210 | if (status == -EAGAIN) { |
2211 | /* We must have found a delegation */ | |
2212 | exception.retry = 1; | |
2213 | continue; | |
2214 | } | |
1da177e4 LT |
2215 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
2216 | status, &exception)); | |
2217 | } while (exception.retry); | |
2218 | return res; | |
2219 | } | |
2220 | ||
659bfcd6 TM |
2221 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2222 | struct nfs_fattr *fattr, struct iattr *sattr, | |
2223 | struct nfs4_state *state) | |
1da177e4 | 2224 | { |
3e4f6290 | 2225 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 2226 | struct nfs_setattrargs arg = { |
3e4f6290 | 2227 | .fh = NFS_FH(inode), |
1da177e4 LT |
2228 | .iap = sattr, |
2229 | .server = server, | |
2230 | .bitmask = server->attr_bitmask, | |
2231 | }; | |
2232 | struct nfs_setattrres res = { | |
2233 | .fattr = fattr, | |
2234 | .server = server, | |
2235 | }; | |
2236 | struct rpc_message msg = { | |
659bfcd6 TM |
2237 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
2238 | .rpc_argp = &arg, | |
2239 | .rpc_resp = &res, | |
2240 | .rpc_cred = cred, | |
1da177e4 | 2241 | }; |
26e976a8 | 2242 | unsigned long timestamp = jiffies; |
65e4308d | 2243 | int status; |
1da177e4 | 2244 | |
0e574af1 | 2245 | nfs_fattr_init(fattr); |
1da177e4 | 2246 | |
4fc8796d | 2247 | if (state != NULL) { |
2a369153 TM |
2248 | struct nfs_lockowner lockowner = { |
2249 | .l_owner = current->files, | |
2250 | .l_pid = current->tgid, | |
2251 | }; | |
4fc8796d | 2252 | nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, |
2a369153 | 2253 | &lockowner); |
4fc8796d TM |
2254 | } else if (nfs4_copy_delegation_stateid(&arg.stateid, inode, |
2255 | FMODE_WRITE)) { | |
3e4f6290 | 2256 | /* Use that stateid */ |
08e9eac4 | 2257 | } else |
f597c537 | 2258 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 2259 | |
7c513058 | 2260 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
2261 | if (status == 0 && state != NULL) |
2262 | renew_lease(server, timestamp); | |
65e4308d | 2263 | return status; |
1da177e4 LT |
2264 | } |
2265 | ||
659bfcd6 TM |
2266 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2267 | struct nfs_fattr *fattr, struct iattr *sattr, | |
2268 | struct nfs4_state *state) | |
1da177e4 | 2269 | { |
3e4f6290 | 2270 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
2271 | struct nfs4_exception exception = { |
2272 | .state = state, | |
3114ea7a | 2273 | .inode = inode, |
a1d0b5ee | 2274 | }; |
1da177e4 LT |
2275 | int err; |
2276 | do { | |
451146be TM |
2277 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state); |
2278 | switch (err) { | |
2279 | case -NFS4ERR_OPENMODE: | |
2280 | if (state && !(state->state & FMODE_WRITE)) { | |
2281 | err = -EBADF; | |
2282 | if (sattr->ia_valid & ATTR_OPEN) | |
2283 | err = -EACCES; | |
2284 | goto out; | |
2285 | } | |
2286 | } | |
2287 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2288 | } while (exception.retry); |
451146be | 2289 | out: |
1da177e4 LT |
2290 | return err; |
2291 | } | |
2292 | ||
2293 | struct nfs4_closedata { | |
2294 | struct inode *inode; | |
2295 | struct nfs4_state *state; | |
2296 | struct nfs_closeargs arg; | |
2297 | struct nfs_closeres res; | |
516a6af6 | 2298 | struct nfs_fattr fattr; |
26e976a8 | 2299 | unsigned long timestamp; |
f7e8917a FI |
2300 | bool roc; |
2301 | u32 roc_barrier; | |
1da177e4 LT |
2302 | }; |
2303 | ||
963d8fe5 | 2304 | static void nfs4_free_closedata(void *data) |
9512135d | 2305 | { |
963d8fe5 TM |
2306 | struct nfs4_closedata *calldata = data; |
2307 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2308 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2309 | |
f7e8917a FI |
2310 | if (calldata->roc) |
2311 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2312 | nfs4_put_open_state(calldata->state); |
2313 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2314 | nfs4_put_state_owner(sp); |
324d003b | 2315 | nfs_sb_deactive_async(sb); |
9512135d TM |
2316 | kfree(calldata); |
2317 | } | |
2318 | ||
88069f77 TM |
2319 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
2320 | fmode_t fmode) | |
2321 | { | |
2322 | spin_lock(&state->owner->so_lock); | |
2323 | if (!(fmode & FMODE_READ)) | |
2324 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2325 | if (!(fmode & FMODE_WRITE)) | |
2326 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2327 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
2328 | spin_unlock(&state->owner->so_lock); | |
2329 | } | |
2330 | ||
963d8fe5 | 2331 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2332 | { |
963d8fe5 | 2333 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2334 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
2335 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
2336 | ||
a3ca5651 | 2337 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2338 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2339 | return; | |
1da177e4 LT |
2340 | /* hmm. we are done with the inode, and in the process of freeing |
2341 | * the state_owner. we keep this around to process errors | |
2342 | */ | |
1da177e4 LT |
2343 | switch (task->tk_status) { |
2344 | case 0: | |
f7e8917a FI |
2345 | if (calldata->roc) |
2346 | pnfs_roc_set_barrier(state->inode, | |
2347 | calldata->roc_barrier); | |
45328c35 | 2348 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 2349 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
2350 | nfs4_close_clear_stateid_flags(state, |
2351 | calldata->arg.fmode); | |
1da177e4 LT |
2352 | break; |
2353 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
2354 | case -NFS4ERR_OLD_STATEID: |
2355 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2356 | case -NFS4ERR_EXPIRED: |
dc0b027d | 2357 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2358 | break; |
1da177e4 | 2359 | default: |
72211dbe TM |
2360 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
2361 | rpc_restart_call_prepare(task); | |
1da177e4 | 2362 | } |
72211dbe | 2363 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2364 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2365 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2366 | } |
2367 | ||
4ce70ada | 2368 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2369 | { |
4ce70ada | 2370 | struct nfs4_closedata *calldata = data; |
9512135d | 2371 | struct nfs4_state *state = calldata->state; |
7fdab069 | 2372 | struct inode *inode = calldata->inode; |
88069f77 | 2373 | int call_close = 0; |
9512135d | 2374 | |
a3ca5651 | 2375 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2376 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 2377 | return; |
003707c7 | 2378 | |
88069f77 TM |
2379 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
2380 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 2381 | spin_lock(&state->owner->so_lock); |
003707c7 | 2382 | /* Calculate the change in open mode */ |
e7616923 | 2383 | if (state->n_rdwr == 0) { |
003707c7 | 2384 | if (state->n_rdonly == 0) { |
88069f77 TM |
2385 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
2386 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2387 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
2388 | } |
2389 | if (state->n_wronly == 0) { | |
88069f77 TM |
2390 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
2391 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2392 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2393 | } |
e7616923 | 2394 | } |
4cecb76f | 2395 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2396 | |
2397 | if (!call_close) { | |
963d8fe5 TM |
2398 | /* Note: exit _without_ calling nfs4_close_done */ |
2399 | task->tk_action = NULL; | |
a3ca5651 | 2400 | goto out; |
9512135d | 2401 | } |
88069f77 | 2402 | |
f7e8917a | 2403 | if (calldata->arg.fmode == 0) { |
88069f77 | 2404 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a | 2405 | if (calldata->roc && |
7fdab069 | 2406 | pnfs_roc_drain(inode, &calldata->roc_barrier, task)) |
a3ca5651 | 2407 | goto out; |
f7e8917a | 2408 | } |
88069f77 | 2409 | |
516a6af6 | 2410 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2411 | calldata->timestamp = jiffies; |
7fdab069 | 2412 | if (nfs4_setup_sequence(NFS_SERVER(inode), |
9d12b216 TM |
2413 | &calldata->arg.seq_args, |
2414 | &calldata->res.seq_res, | |
2240a9e2 TM |
2415 | task) != 0) |
2416 | nfs_release_seqid(calldata->arg.seqid); | |
2417 | else | |
2418 | rpc_call_start(task); | |
a3ca5651 CL |
2419 | out: |
2420 | dprintk("%s: done!\n", __func__); | |
1da177e4 LT |
2421 | } |
2422 | ||
963d8fe5 | 2423 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2424 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2425 | .rpc_call_done = nfs4_close_done, |
2426 | .rpc_release = nfs4_free_closedata, | |
2427 | }; | |
2428 | ||
1da177e4 LT |
2429 | /* |
2430 | * It is possible for data to be read/written from a mem-mapped file | |
2431 | * after the sys_close call (which hits the vfs layer as a flush). | |
2432 | * This means that we can't safely call nfsv4 close on a file until | |
2433 | * the inode is cleared. This in turn means that we are not good | |
2434 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2435 | * share state even when we are done with one of the three share | |
2436 | * stateid's in the inode. | |
2437 | * | |
2438 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2439 | */ | |
1f7977c1 | 2440 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 2441 | { |
4a35bd41 | 2442 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2443 | struct nfs4_closedata *calldata; |
b39e625b TM |
2444 | struct nfs4_state_owner *sp = state->owner; |
2445 | struct rpc_task *task; | |
5138fde0 TM |
2446 | struct rpc_message msg = { |
2447 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2448 | .rpc_cred = state->owner->so_cred, | |
2449 | }; | |
c970aa85 TM |
2450 | struct rpc_task_setup task_setup_data = { |
2451 | .rpc_client = server->client, | |
5138fde0 | 2452 | .rpc_message = &msg, |
c970aa85 | 2453 | .callback_ops = &nfs4_close_ops, |
101070ca | 2454 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2455 | .flags = RPC_TASK_ASYNC, |
2456 | }; | |
9512135d | 2457 | int status = -ENOMEM; |
1da177e4 | 2458 | |
8535b2be | 2459 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2460 | if (calldata == NULL) |
9512135d | 2461 | goto out; |
9d12b216 | 2462 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2463 | calldata->inode = state->inode; |
1da177e4 | 2464 | calldata->state = state; |
4a35bd41 | 2465 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2466 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2467 | /* Serialization for the sequence id */ |
8535b2be | 2468 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2469 | if (calldata->arg.seqid == NULL) |
2470 | goto out_free_calldata; | |
dc0b027d | 2471 | calldata->arg.fmode = 0; |
a65318bf | 2472 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2473 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2474 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2475 | calldata->res.server = server; |
1f7977c1 | 2476 | calldata->roc = pnfs_roc(state->inode); |
643168c2 | 2477 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2478 | |
1174dd1f TM |
2479 | msg.rpc_argp = &calldata->arg; |
2480 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2481 | task_setup_data.callback_data = calldata; |
2482 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2483 | if (IS_ERR(task)) |
2484 | return PTR_ERR(task); | |
a49c3c77 TM |
2485 | status = 0; |
2486 | if (wait) | |
2487 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2488 | rpc_put_task(task); |
a49c3c77 | 2489 | return status; |
9512135d TM |
2490 | out_free_calldata: |
2491 | kfree(calldata); | |
2492 | out: | |
b39e625b TM |
2493 | nfs4_put_open_state(state); |
2494 | nfs4_put_state_owner(sp); | |
9512135d | 2495 | return status; |
1da177e4 LT |
2496 | } |
2497 | ||
2b484297 | 2498 | static struct inode * |
cd9a1c0e | 2499 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2500 | { |
1da177e4 | 2501 | struct nfs4_state *state; |
1da177e4 | 2502 | |
565277f6 | 2503 | /* Protect against concurrent sillydeletes */ |
82be417a AA |
2504 | state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr, |
2505 | ctx->cred, &ctx->mdsthreshold); | |
f46e0bd3 TM |
2506 | if (IS_ERR(state)) |
2507 | return ERR_CAST(state); | |
cd9a1c0e | 2508 | ctx->state = state; |
f46e0bd3 | 2509 | return igrab(state->inode); |
1da177e4 LT |
2510 | } |
2511 | ||
1185a552 | 2512 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2513 | { |
2514 | if (ctx->state == NULL) | |
2515 | return; | |
2516 | if (is_sync) | |
643168c2 | 2517 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2518 | else |
643168c2 | 2519 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2520 | } |
1da177e4 LT |
2521 | |
2522 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2523 | { | |
43652ad5 BH |
2524 | struct nfs4_server_caps_arg args = { |
2525 | .fhandle = fhandle, | |
2526 | }; | |
1da177e4 LT |
2527 | struct nfs4_server_caps_res res = {}; |
2528 | struct rpc_message msg = { | |
2529 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2530 | .rpc_argp = &args, |
1da177e4 LT |
2531 | .rpc_resp = &res, |
2532 | }; | |
2533 | int status; | |
2534 | ||
7c513058 | 2535 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2536 | if (status == 0) { |
2537 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2538 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2539 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2540 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2541 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2542 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2543 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2544 | server->caps |= NFS_CAP_ACLS; | |
2545 | if (res.has_links != 0) | |
2546 | server->caps |= NFS_CAP_HARDLINKS; | |
2547 | if (res.has_symlinks != 0) | |
2548 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2549 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2550 | server->caps |= NFS_CAP_FILEID; | |
2551 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2552 | server->caps |= NFS_CAP_MODE; | |
2553 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2554 | server->caps |= NFS_CAP_NLINK; | |
2555 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2556 | server->caps |= NFS_CAP_OWNER; | |
2557 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2558 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2559 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2560 | server->caps |= NFS_CAP_ATIME; | |
2561 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2562 | server->caps |= NFS_CAP_CTIME; | |
2563 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2564 | server->caps |= NFS_CAP_MTIME; | |
2565 | ||
a65318bf TM |
2566 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2567 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2568 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 | 2569 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2570 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2571 | } |
cccef3b9 | 2572 | |
1da177e4 LT |
2573 | return status; |
2574 | } | |
2575 | ||
55a97593 | 2576 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2577 | { |
2578 | struct nfs4_exception exception = { }; | |
2579 | int err; | |
2580 | do { | |
2581 | err = nfs4_handle_exception(server, | |
2582 | _nfs4_server_capabilities(server, fhandle), | |
2583 | &exception); | |
2584 | } while (exception.retry); | |
2585 | return err; | |
2586 | } | |
2587 | ||
2588 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2589 | struct nfs_fsinfo *info) | |
2590 | { | |
1da177e4 LT |
2591 | struct nfs4_lookup_root_arg args = { |
2592 | .bitmask = nfs4_fattr_bitmap, | |
2593 | }; | |
2594 | struct nfs4_lookup_res res = { | |
2595 | .server = server, | |
0e574af1 | 2596 | .fattr = info->fattr, |
1da177e4 LT |
2597 | .fh = fhandle, |
2598 | }; | |
2599 | struct rpc_message msg = { | |
2600 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2601 | .rpc_argp = &args, | |
2602 | .rpc_resp = &res, | |
2603 | }; | |
008f55d0 | 2604 | |
0e574af1 | 2605 | nfs_fattr_init(info->fattr); |
7c513058 | 2606 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2607 | } |
2608 | ||
2609 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2610 | struct nfs_fsinfo *info) | |
2611 | { | |
2612 | struct nfs4_exception exception = { }; | |
2613 | int err; | |
2614 | do { | |
fb8a5ba8 BS |
2615 | err = _nfs4_lookup_root(server, fhandle, info); |
2616 | switch (err) { | |
2617 | case 0: | |
2618 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 2619 | goto out; |
fb8a5ba8 BS |
2620 | default: |
2621 | err = nfs4_handle_exception(server, err, &exception); | |
2622 | } | |
1da177e4 | 2623 | } while (exception.retry); |
05e9cfb4 | 2624 | out: |
1da177e4 LT |
2625 | return err; |
2626 | } | |
2627 | ||
8f70e95f BS |
2628 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2629 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2630 | { | |
2631 | struct rpc_auth *auth; | |
2632 | int ret; | |
2633 | ||
2634 | auth = rpcauth_create(flavor, server->client); | |
e8d920c5 | 2635 | if (IS_ERR(auth)) { |
8f70e95f BS |
2636 | ret = -EIO; |
2637 | goto out; | |
2638 | } | |
2639 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2640 | out: |
2641 | return ret; | |
2642 | } | |
2643 | ||
801a16dc | 2644 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2645 | struct nfs_fsinfo *info) |
1da177e4 | 2646 | { |
8f70e95f | 2647 | int i, len, status = 0; |
0fabee24 | 2648 | rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS]; |
1da177e4 | 2649 | |
6a1a1e34 | 2650 | len = rpcauth_list_flavors(flav_array, ARRAY_SIZE(flav_array)); |
4ea8fed5 TM |
2651 | if (len < 0) |
2652 | return len; | |
8f70e95f BS |
2653 | |
2654 | for (i = 0; i < len; i++) { | |
6a1a1e34 CL |
2655 | /* AUTH_UNIX is the default flavor if none was specified, |
2656 | * thus has already been tried. */ | |
2657 | if (flav_array[i] == RPC_AUTH_UNIX) | |
2658 | continue; | |
2659 | ||
8f70e95f | 2660 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); |
fb8a5ba8 | 2661 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2662 | continue; |
2663 | break; | |
8f70e95f | 2664 | } |
fb8a5ba8 BS |
2665 | /* |
2666 | * -EACCESS could mean that the user doesn't have correct permissions | |
2667 | * to access the mount. It could also mean that we tried to mount | |
2668 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2669 | * existing mount programs don't handle -EACCES very well so it should | |
2670 | * be mapped to -EPERM instead. | |
2671 | */ | |
2672 | if (status == -EACCES) | |
2673 | status = -EPERM; | |
801a16dc BS |
2674 | return status; |
2675 | } | |
2676 | ||
2677 | /* | |
2678 | * get the file handle for the "/" directory on the server | |
2679 | */ | |
3028eb2b BS |
2680 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
2681 | struct nfs_fsinfo *info) | |
801a16dc | 2682 | { |
fca78d6d | 2683 | int minor_version = server->nfs_client->cl_minorversion; |
801a16dc | 2684 | int status = nfs4_lookup_root(server, fhandle, info); |
fb8a5ba8 BS |
2685 | if ((status == -NFS4ERR_WRONGSEC) && !(server->flags & NFS_MOUNT_SECFLAVOUR)) |
2686 | /* | |
2687 | * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM | |
2688 | * by nfs4_map_errors() as this function exits. | |
2689 | */ | |
fca78d6d | 2690 | status = nfs_v4_minor_ops[minor_version]->find_root_sec(server, fhandle, info); |
1da177e4 LT |
2691 | if (status == 0) |
2692 | status = nfs4_server_capabilities(server, fhandle); | |
2693 | if (status == 0) | |
2694 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2695 | return nfs4_map_errors(status); |
1da177e4 LT |
2696 | } |
2697 | ||
bae36241 BS |
2698 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
2699 | struct nfs_fsinfo *info) | |
2700 | { | |
2701 | int error; | |
2702 | struct nfs_fattr *fattr = info->fattr; | |
2703 | ||
2704 | error = nfs4_server_capabilities(server, mntfh); | |
2705 | if (error < 0) { | |
2706 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
2707 | return error; | |
2708 | } | |
2709 | ||
2710 | error = nfs4_proc_getattr(server, mntfh, fattr); | |
2711 | if (error < 0) { | |
2712 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
2713 | return error; | |
2714 | } | |
2715 | ||
2716 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
2717 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
2718 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
2719 | ||
2720 | return error; | |
2721 | } | |
2722 | ||
6b97fd3d MN |
2723 | /* |
2724 | * Get locations and (maybe) other attributes of a referral. | |
2725 | * Note that we'll actually follow the referral later when | |
2726 | * we detect fsid mismatch in inode revalidation | |
2727 | */ | |
f05d147f BS |
2728 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
2729 | const struct qstr *name, struct nfs_fattr *fattr, | |
2730 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
2731 | { |
2732 | int status = -ENOMEM; | |
2733 | struct page *page = NULL; | |
2734 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2735 | |
2736 | page = alloc_page(GFP_KERNEL); | |
2737 | if (page == NULL) | |
2738 | goto out; | |
2739 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2740 | if (locations == NULL) | |
2741 | goto out; | |
2742 | ||
f05d147f | 2743 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
2744 | if (status != 0) |
2745 | goto out; | |
2746 | /* Make sure server returned a different fsid for the referral */ | |
2747 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2748 | dprintk("%s: server did not return a different fsid for" |
2749 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2750 | status = -EIO; |
2751 | goto out; | |
2752 | } | |
533eb461 AA |
2753 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2754 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2755 | |
533eb461 | 2756 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2757 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2758 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2759 | out: | |
2760 | if (page) | |
2761 | __free_page(page); | |
5d7ca35a | 2762 | kfree(locations); |
6b97fd3d MN |
2763 | return status; |
2764 | } | |
2765 | ||
1da177e4 LT |
2766 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2767 | { | |
2768 | struct nfs4_getattr_arg args = { | |
2769 | .fh = fhandle, | |
2770 | .bitmask = server->attr_bitmask, | |
2771 | }; | |
2772 | struct nfs4_getattr_res res = { | |
2773 | .fattr = fattr, | |
2774 | .server = server, | |
2775 | }; | |
2776 | struct rpc_message msg = { | |
2777 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2778 | .rpc_argp = &args, | |
2779 | .rpc_resp = &res, | |
2780 | }; | |
2781 | ||
0e574af1 | 2782 | nfs_fattr_init(fattr); |
7c513058 | 2783 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2784 | } |
2785 | ||
2786 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2787 | { | |
2788 | struct nfs4_exception exception = { }; | |
2789 | int err; | |
2790 | do { | |
2791 | err = nfs4_handle_exception(server, | |
2792 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2793 | &exception); | |
2794 | } while (exception.retry); | |
2795 | return err; | |
2796 | } | |
2797 | ||
2798 | /* | |
2799 | * The file is not closed if it is opened due to the a request to change | |
2800 | * the size of the file. The open call will not be needed once the | |
2801 | * VFS layer lookup-intents are implemented. | |
2802 | * | |
2803 | * Close is called when the inode is destroyed. | |
2804 | * If we haven't opened the file for O_WRONLY, we | |
2805 | * need to in the size_change case to obtain a stateid. | |
2806 | * | |
2807 | * Got race? | |
2808 | * Because OPEN is always done by name in nfsv4, it is | |
2809 | * possible that we opened a different file by the same | |
2810 | * name. We can recognize this race condition, but we | |
2811 | * can't do anything about it besides returning an error. | |
2812 | * | |
2813 | * This will be fixed with VFS changes (lookup-intent). | |
2814 | */ | |
2815 | static int | |
2816 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2817 | struct iattr *sattr) | |
2818 | { | |
08e9eac4 | 2819 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2820 | struct rpc_cred *cred = NULL; |
d530838b | 2821 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2822 | int status; |
2823 | ||
8a1636c4 BH |
2824 | if (pnfs_ld_layoutret_on_setattr(inode)) |
2825 | pnfs_return_layout(inode); | |
2826 | ||
0e574af1 | 2827 | nfs_fattr_init(fattr); |
1da177e4 | 2828 | |
2669940d AA |
2829 | /* Deal with open(O_TRUNC) */ |
2830 | if (sattr->ia_valid & ATTR_OPEN) | |
2831 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME|ATTR_OPEN); | |
2832 | ||
2833 | /* Optimization: if the end result is no change, don't RPC */ | |
2834 | if ((sattr->ia_valid & ~(ATTR_FILE)) == 0) | |
2835 | return 0; | |
2836 | ||
d530838b | 2837 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2838 | if (sattr->ia_valid & ATTR_FILE) { |
2839 | struct nfs_open_context *ctx; | |
2840 | ||
2841 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2842 | if (ctx) { |
2843 | cred = ctx->cred; | |
2844 | state = ctx->state; | |
2845 | } | |
659bfcd6 | 2846 | } |
08e9eac4 | 2847 | |
659bfcd6 | 2848 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2849 | if (status == 0) |
2850 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2851 | return status; |
2852 | } | |
2853 | ||
0c2e53f1 TM |
2854 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2855 | const struct qstr *name, struct nfs_fh *fhandle, | |
2856 | struct nfs_fattr *fattr) | |
2b3de441 | 2857 | { |
0c2e53f1 | 2858 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
2859 | int status; |
2860 | struct nfs4_lookup_arg args = { | |
2861 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 2862 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
2863 | .name = name, |
2864 | }; | |
2865 | struct nfs4_lookup_res res = { | |
2866 | .server = server, | |
2867 | .fattr = fattr, | |
2868 | .fh = fhandle, | |
2869 | }; | |
2870 | struct rpc_message msg = { | |
2871 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2872 | .rpc_argp = &args, | |
2873 | .rpc_resp = &res, | |
2874 | }; | |
2875 | ||
2876 | nfs_fattr_init(fattr); | |
2877 | ||
1da177e4 | 2878 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 2879 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2880 | dprintk("NFS reply lookup: %d\n", status); |
2881 | return status; | |
2882 | } | |
2883 | ||
72de53ec | 2884 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 2885 | { |
7ebb9315 | 2886 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 2887 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
2888 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
2889 | fattr->nlink = 2; | |
2890 | } | |
2891 | ||
72de53ec BS |
2892 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
2893 | struct qstr *name, struct nfs_fh *fhandle, | |
2894 | struct nfs_fattr *fattr) | |
1da177e4 LT |
2895 | { |
2896 | struct nfs4_exception exception = { }; | |
72de53ec | 2897 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
2898 | int err; |
2899 | do { | |
72de53ec BS |
2900 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr); |
2901 | switch (err) { | |
08ef7bd3 | 2902 | case -NFS4ERR_BADNAME: |
72de53ec BS |
2903 | err = -ENOENT; |
2904 | goto out; | |
0c2e53f1 | 2905 | case -NFS4ERR_MOVED: |
f05d147f | 2906 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
72de53ec | 2907 | goto out; |
0c2e53f1 | 2908 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
2909 | err = -EPERM; |
2910 | if (client != *clnt) | |
2911 | goto out; | |
2912 | ||
2913 | client = nfs4_create_sec_client(client, dir, name); | |
2914 | if (IS_ERR(client)) | |
2915 | return PTR_ERR(client); | |
2916 | ||
2917 | exception.retry = 1; | |
2918 | break; | |
2919 | default: | |
2920 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 2921 | } |
1da177e4 | 2922 | } while (exception.retry); |
72de53ec BS |
2923 | |
2924 | out: | |
2925 | if (err == 0) | |
2926 | *clnt = client; | |
2927 | else if (client != *clnt) | |
2928 | rpc_shutdown_client(client); | |
2929 | ||
1da177e4 LT |
2930 | return err; |
2931 | } | |
2932 | ||
80a16b21 | 2933 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
72de53ec BS |
2934 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2935 | { | |
2936 | int status; | |
2937 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
2938 | ||
2939 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2940 | if (client != NFS_CLIENT(dir)) { | |
2941 | rpc_shutdown_client(client); | |
2942 | nfs_fixup_secinfo_attributes(fattr); | |
2943 | } | |
2944 | return status; | |
2945 | } | |
2946 | ||
f05d147f BS |
2947 | struct rpc_clnt * |
2948 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
2949 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2950 | { | |
2951 | int status; | |
2952 | struct rpc_clnt *client = rpc_clone_client(NFS_CLIENT(dir)); | |
2953 | ||
2954 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2955 | if (status < 0) { | |
2956 | rpc_shutdown_client(client); | |
2957 | return ERR_PTR(status); | |
2958 | } | |
2959 | return client; | |
2960 | } | |
2961 | ||
1da177e4 LT |
2962 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
2963 | { | |
76b32999 | 2964 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2965 | struct nfs4_accessargs args = { |
2966 | .fh = NFS_FH(inode), | |
a4980e78 | 2967 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
2968 | }; |
2969 | struct nfs4_accessres res = { | |
2970 | .server = server, | |
1da177e4 | 2971 | }; |
1da177e4 LT |
2972 | struct rpc_message msg = { |
2973 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2974 | .rpc_argp = &args, | |
2975 | .rpc_resp = &res, | |
2976 | .rpc_cred = entry->cred, | |
2977 | }; | |
2978 | int mode = entry->mask; | |
2979 | int status; | |
2980 | ||
2981 | /* | |
2982 | * Determine which access bits we want to ask for... | |
2983 | */ | |
2984 | if (mode & MAY_READ) | |
2985 | args.access |= NFS4_ACCESS_READ; | |
2986 | if (S_ISDIR(inode->i_mode)) { | |
2987 | if (mode & MAY_WRITE) | |
2988 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2989 | if (mode & MAY_EXEC) | |
2990 | args.access |= NFS4_ACCESS_LOOKUP; | |
2991 | } else { | |
2992 | if (mode & MAY_WRITE) | |
2993 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2994 | if (mode & MAY_EXEC) | |
2995 | args.access |= NFS4_ACCESS_EXECUTE; | |
2996 | } | |
c407d41a TM |
2997 | |
2998 | res.fattr = nfs_alloc_fattr(); | |
2999 | if (res.fattr == NULL) | |
3000 | return -ENOMEM; | |
3001 | ||
7c513058 | 3002 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 3003 | if (!status) { |
6168f62c | 3004 | nfs_access_set_mask(entry, res.access); |
c407d41a | 3005 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 3006 | } |
c407d41a | 3007 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3008 | return status; |
3009 | } | |
3010 | ||
3011 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
3012 | { | |
3013 | struct nfs4_exception exception = { }; | |
3014 | int err; | |
3015 | do { | |
3016 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3017 | _nfs4_proc_access(inode, entry), | |
3018 | &exception); | |
3019 | } while (exception.retry); | |
3020 | return err; | |
3021 | } | |
3022 | ||
3023 | /* | |
3024 | * TODO: For the time being, we don't try to get any attributes | |
3025 | * along with any of the zero-copy operations READ, READDIR, | |
3026 | * READLINK, WRITE. | |
3027 | * | |
3028 | * In the case of the first three, we want to put the GETATTR | |
3029 | * after the read-type operation -- this is because it is hard | |
3030 | * to predict the length of a GETATTR response in v4, and thus | |
3031 | * align the READ data correctly. This means that the GETATTR | |
3032 | * may end up partially falling into the page cache, and we should | |
3033 | * shift it into the 'tail' of the xdr_buf before processing. | |
3034 | * To do this efficiently, we need to know the total length | |
3035 | * of data received, which doesn't seem to be available outside | |
3036 | * of the RPC layer. | |
3037 | * | |
3038 | * In the case of WRITE, we also want to put the GETATTR after | |
3039 | * the operation -- in this case because we want to make sure | |
140150db | 3040 | * we get the post-operation mtime and size. |
1da177e4 LT |
3041 | * |
3042 | * Both of these changes to the XDR layer would in fact be quite | |
3043 | * minor, but I decided to leave them for a subsequent patch. | |
3044 | */ | |
3045 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3046 | unsigned int pgbase, unsigned int pglen) | |
3047 | { | |
3048 | struct nfs4_readlink args = { | |
3049 | .fh = NFS_FH(inode), | |
3050 | .pgbase = pgbase, | |
3051 | .pglen = pglen, | |
3052 | .pages = &page, | |
3053 | }; | |
f50c7000 | 3054 | struct nfs4_readlink_res res; |
1da177e4 LT |
3055 | struct rpc_message msg = { |
3056 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
3057 | .rpc_argp = &args, | |
f50c7000 | 3058 | .rpc_resp = &res, |
1da177e4 LT |
3059 | }; |
3060 | ||
7c513058 | 3061 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3062 | } |
3063 | ||
3064 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
3065 | unsigned int pgbase, unsigned int pglen) | |
3066 | { | |
3067 | struct nfs4_exception exception = { }; | |
3068 | int err; | |
3069 | do { | |
3070 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3071 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
3072 | &exception); | |
3073 | } while (exception.retry); | |
3074 | return err; | |
3075 | } | |
3076 | ||
1da177e4 | 3077 | /* |
8867fe58 | 3078 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 3079 | */ |
1da177e4 LT |
3080 | static int |
3081 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 3082 | int flags) |
1da177e4 | 3083 | { |
8867fe58 | 3084 | struct nfs_open_context *ctx; |
1da177e4 | 3085 | struct nfs4_state *state; |
1da177e4 LT |
3086 | int status = 0; |
3087 | ||
8867fe58 MS |
3088 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
3089 | if (IS_ERR(ctx)) | |
3090 | return PTR_ERR(ctx); | |
3091 | ||
a8a5da99 | 3092 | sattr->ia_mode &= ~current_umask(); |
8626e4a4 TM |
3093 | state = nfs4_do_open(dir, dentry, ctx->mode, |
3094 | flags, sattr, ctx->cred, | |
3095 | &ctx->mdsthreshold); | |
d4d9cdcb | 3096 | d_drop(dentry); |
1da177e4 LT |
3097 | if (IS_ERR(state)) { |
3098 | status = PTR_ERR(state); | |
c0204fd2 | 3099 | goto out; |
1da177e4 | 3100 | } |
d4d9cdcb | 3101 | d_add(dentry, igrab(state->inode)); |
d75340cc | 3102 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
8867fe58 | 3103 | ctx->state = state; |
1da177e4 | 3104 | out: |
8867fe58 | 3105 | put_nfs_open_context(ctx); |
1da177e4 LT |
3106 | return status; |
3107 | } | |
3108 | ||
3109 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3110 | { | |
16e42959 | 3111 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 3112 | struct nfs_removeargs args = { |
1da177e4 | 3113 | .fh = NFS_FH(dir), |
26fe5750 | 3114 | .name = *name, |
16e42959 | 3115 | }; |
4fdc17b2 | 3116 | struct nfs_removeres res = { |
16e42959 | 3117 | .server = server, |
1da177e4 | 3118 | }; |
1da177e4 | 3119 | struct rpc_message msg = { |
4fdc17b2 TM |
3120 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
3121 | .rpc_argp = &args, | |
3122 | .rpc_resp = &res, | |
1da177e4 | 3123 | }; |
778d2817 | 3124 | int status; |
1da177e4 | 3125 | |
7c513058 | 3126 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 3127 | if (status == 0) |
16e42959 | 3128 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
3129 | return status; |
3130 | } | |
3131 | ||
3132 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3133 | { | |
3134 | struct nfs4_exception exception = { }; | |
3135 | int err; | |
3136 | do { | |
3137 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3138 | _nfs4_proc_remove(dir, name), | |
3139 | &exception); | |
3140 | } while (exception.retry); | |
3141 | return err; | |
3142 | } | |
3143 | ||
e4eff1a6 | 3144 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 3145 | { |
e4eff1a6 TM |
3146 | struct nfs_server *server = NFS_SERVER(dir); |
3147 | struct nfs_removeargs *args = msg->rpc_argp; | |
3148 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 3149 | |
e4eff1a6 | 3150 | res->server = server; |
1da177e4 | 3151 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
9d12b216 | 3152 | nfs41_init_sequence(&args->seq_args, &res->seq_res, 1); |
1da177e4 LT |
3153 | } |
3154 | ||
34e137cc BS |
3155 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
3156 | { | |
3157 | if (nfs4_setup_sequence(NFS_SERVER(data->dir), | |
3158 | &data->args.seq_args, | |
3159 | &data->res.seq_res, | |
3160 | task)) | |
3161 | return; | |
3162 | rpc_call_start(task); | |
1da177e4 LT |
3163 | } |
3164 | ||
e4eff1a6 | 3165 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 3166 | { |
e4eff1a6 TM |
3167 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
3168 | ||
14516c3a TM |
3169 | if (!nfs4_sequence_done(task, &res->seq_res)) |
3170 | return 0; | |
9e33bed5 | 3171 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
3172 | return 0; |
3173 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 3174 | return 1; |
1da177e4 LT |
3175 | } |
3176 | ||
d3d4152a JL |
3177 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
3178 | { | |
3179 | struct nfs_server *server = NFS_SERVER(dir); | |
3180 | struct nfs_renameargs *arg = msg->rpc_argp; | |
3181 | struct nfs_renameres *res = msg->rpc_resp; | |
3182 | ||
3183 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 3184 | res->server = server; |
9d12b216 | 3185 | nfs41_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
3186 | } |
3187 | ||
c6bfa1a1 BS |
3188 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
3189 | { | |
3190 | if (nfs4_setup_sequence(NFS_SERVER(data->old_dir), | |
3191 | &data->args.seq_args, | |
3192 | &data->res.seq_res, | |
3193 | task)) | |
3194 | return; | |
3195 | rpc_call_start(task); | |
d3d4152a JL |
3196 | } |
3197 | ||
3198 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
3199 | struct inode *new_dir) | |
3200 | { | |
3201 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
3202 | ||
3203 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
3204 | return 0; | |
3205 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
3206 | return 0; | |
3207 | ||
3208 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 3209 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
3210 | return 1; |
3211 | } | |
3212 | ||
1da177e4 LT |
3213 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
3214 | struct inode *new_dir, struct qstr *new_name) | |
3215 | { | |
6caf2c82 | 3216 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 3217 | struct nfs_renameargs arg = { |
1da177e4 LT |
3218 | .old_dir = NFS_FH(old_dir), |
3219 | .new_dir = NFS_FH(new_dir), | |
3220 | .old_name = old_name, | |
3221 | .new_name = new_name, | |
6caf2c82 | 3222 | }; |
e8582a8b | 3223 | struct nfs_renameres res = { |
6caf2c82 | 3224 | .server = server, |
1da177e4 | 3225 | }; |
1da177e4 LT |
3226 | struct rpc_message msg = { |
3227 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
3228 | .rpc_argp = &arg, | |
3229 | .rpc_resp = &res, | |
3230 | }; | |
011fff72 | 3231 | int status = -ENOMEM; |
1da177e4 | 3232 | |
7c513058 | 3233 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
3234 | if (!status) { |
3235 | update_changeattr(old_dir, &res.old_cinfo); | |
3236 | update_changeattr(new_dir, &res.new_cinfo); | |
3237 | } | |
3238 | return status; | |
3239 | } | |
3240 | ||
3241 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
3242 | struct inode *new_dir, struct qstr *new_name) | |
3243 | { | |
3244 | struct nfs4_exception exception = { }; | |
3245 | int err; | |
3246 | do { | |
3247 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
3248 | _nfs4_proc_rename(old_dir, old_name, | |
3249 | new_dir, new_name), | |
3250 | &exception); | |
3251 | } while (exception.retry); | |
3252 | return err; | |
3253 | } | |
3254 | ||
3255 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3256 | { | |
91ba2eee | 3257 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3258 | struct nfs4_link_arg arg = { |
3259 | .fh = NFS_FH(inode), | |
3260 | .dir_fh = NFS_FH(dir), | |
3261 | .name = name, | |
91ba2eee TM |
3262 | .bitmask = server->attr_bitmask, |
3263 | }; | |
91ba2eee TM |
3264 | struct nfs4_link_res res = { |
3265 | .server = server, | |
1da177e4 | 3266 | }; |
1da177e4 LT |
3267 | struct rpc_message msg = { |
3268 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3269 | .rpc_argp = &arg, | |
91ba2eee | 3270 | .rpc_resp = &res, |
1da177e4 | 3271 | }; |
136f2627 TM |
3272 | int status = -ENOMEM; |
3273 | ||
3274 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3275 | if (res.fattr == NULL) |
136f2627 | 3276 | goto out; |
1da177e4 | 3277 | |
7c513058 | 3278 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3279 | if (!status) { |
3280 | update_changeattr(dir, &res.cinfo); | |
73a3d07c | 3281 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 3282 | } |
136f2627 | 3283 | out: |
136f2627 | 3284 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3285 | return status; |
3286 | } | |
3287 | ||
3288 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3289 | { | |
3290 | struct nfs4_exception exception = { }; | |
3291 | int err; | |
3292 | do { | |
3293 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3294 | _nfs4_proc_link(inode, dir, name), | |
3295 | &exception); | |
3296 | } while (exception.retry); | |
3297 | return err; | |
3298 | } | |
3299 | ||
57dc9a57 TM |
3300 | struct nfs4_createdata { |
3301 | struct rpc_message msg; | |
3302 | struct nfs4_create_arg arg; | |
3303 | struct nfs4_create_res res; | |
3304 | struct nfs_fh fh; | |
3305 | struct nfs_fattr fattr; | |
57dc9a57 TM |
3306 | }; |
3307 | ||
3308 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3309 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3310 | { | |
3311 | struct nfs4_createdata *data; | |
3312 | ||
3313 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3314 | if (data != NULL) { | |
3315 | struct nfs_server *server = NFS_SERVER(dir); | |
3316 | ||
3317 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
3318 | data->msg.rpc_argp = &data->arg; | |
3319 | data->msg.rpc_resp = &data->res; | |
3320 | data->arg.dir_fh = NFS_FH(dir); | |
3321 | data->arg.server = server; | |
3322 | data->arg.name = name; | |
3323 | data->arg.attrs = sattr; | |
3324 | data->arg.ftype = ftype; | |
3325 | data->arg.bitmask = server->attr_bitmask; | |
3326 | data->res.server = server; | |
3327 | data->res.fh = &data->fh; | |
3328 | data->res.fattr = &data->fattr; | |
57dc9a57 | 3329 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3330 | } |
3331 | return data; | |
3332 | } | |
3333 | ||
3334 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3335 | { | |
7c513058 | 3336 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3337 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3338 | if (status == 0) { |
3339 | update_changeattr(dir, &data->res.dir_cinfo); | |
57dc9a57 TM |
3340 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); |
3341 | } | |
3342 | return status; | |
3343 | } | |
3344 | ||
3345 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3346 | { | |
3347 | kfree(data); | |
3348 | } | |
3349 | ||
4f390c15 | 3350 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3351 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 3352 | { |
57dc9a57 TM |
3353 | struct nfs4_createdata *data; |
3354 | int status = -ENAMETOOLONG; | |
1da177e4 | 3355 | |
94a6d753 | 3356 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3357 | goto out; |
4f390c15 | 3358 | |
57dc9a57 TM |
3359 | status = -ENOMEM; |
3360 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3361 | if (data == NULL) | |
3362 | goto out; | |
3363 | ||
3364 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3365 | data->arg.u.symlink.pages = &page; | |
3366 | data->arg.u.symlink.len = len; | |
1da177e4 | 3367 | |
57dc9a57 TM |
3368 | status = nfs4_do_create(dir, dentry, data); |
3369 | ||
3370 | nfs4_free_createdata(data); | |
3371 | out: | |
1da177e4 LT |
3372 | return status; |
3373 | } | |
3374 | ||
4f390c15 | 3375 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3376 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3377 | { |
3378 | struct nfs4_exception exception = { }; | |
3379 | int err; | |
3380 | do { | |
3381 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
3382 | _nfs4_proc_symlink(dir, dentry, page, |
3383 | len, sattr), | |
1da177e4 LT |
3384 | &exception); |
3385 | } while (exception.retry); | |
3386 | return err; | |
3387 | } | |
3388 | ||
3389 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3390 | struct iattr *sattr) | |
3391 | { | |
57dc9a57 TM |
3392 | struct nfs4_createdata *data; |
3393 | int status = -ENOMEM; | |
1da177e4 | 3394 | |
57dc9a57 TM |
3395 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3396 | if (data == NULL) | |
3397 | goto out; | |
3398 | ||
3399 | status = nfs4_do_create(dir, dentry, data); | |
3400 | ||
3401 | nfs4_free_createdata(data); | |
3402 | out: | |
1da177e4 LT |
3403 | return status; |
3404 | } | |
3405 | ||
3406 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3407 | struct iattr *sattr) | |
3408 | { | |
3409 | struct nfs4_exception exception = { }; | |
3410 | int err; | |
a8a5da99 AK |
3411 | |
3412 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3413 | do { |
3414 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3415 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
3416 | &exception); | |
3417 | } while (exception.retry); | |
3418 | return err; | |
3419 | } | |
3420 | ||
3421 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3422 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3423 | { |
3424 | struct inode *dir = dentry->d_inode; | |
3425 | struct nfs4_readdir_arg args = { | |
3426 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3427 | .pages = pages, |
1da177e4 LT |
3428 | .pgbase = 0, |
3429 | .count = count, | |
96d25e53 | 3430 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3431 | .plus = plus, |
1da177e4 LT |
3432 | }; |
3433 | struct nfs4_readdir_res res; | |
3434 | struct rpc_message msg = { | |
3435 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3436 | .rpc_argp = &args, | |
3437 | .rpc_resp = &res, | |
3438 | .rpc_cred = cred, | |
3439 | }; | |
3440 | int status; | |
3441 | ||
3110ff80 | 3442 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3443 | dentry->d_parent->d_name.name, |
3444 | dentry->d_name.name, | |
3445 | (unsigned long long)cookie); | |
c3f52af3 | 3446 | nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); |
1da177e4 | 3447 | res.pgbase = args.pgbase; |
7c513058 | 3448 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3449 | if (status >= 0) { |
c3f52af3 | 3450 | memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3451 | status += args.pgbase; |
3452 | } | |
c4812998 TM |
3453 | |
3454 | nfs_invalidate_atime(dir); | |
3455 | ||
3110ff80 | 3456 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3457 | return status; |
3458 | } | |
3459 | ||
3460 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3461 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3462 | { |
3463 | struct nfs4_exception exception = { }; | |
3464 | int err; | |
3465 | do { | |
3466 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3467 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3468 | pages, count, plus), |
1da177e4 LT |
3469 | &exception); |
3470 | } while (exception.retry); | |
3471 | return err; | |
3472 | } | |
3473 | ||
3474 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3475 | struct iattr *sattr, dev_t rdev) | |
3476 | { | |
57dc9a57 TM |
3477 | struct nfs4_createdata *data; |
3478 | int mode = sattr->ia_mode; | |
3479 | int status = -ENOMEM; | |
1da177e4 | 3480 | |
57dc9a57 TM |
3481 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); |
3482 | if (data == NULL) | |
3483 | goto out; | |
3484 | ||
1da177e4 | 3485 | if (S_ISFIFO(mode)) |
57dc9a57 | 3486 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3487 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3488 | data->arg.ftype = NF4BLK; |
3489 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3490 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3491 | } |
3492 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3493 | data->arg.ftype = NF4CHR; |
3494 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3495 | data->arg.u.device.specdata2 = MINOR(rdev); | |
4ea8fed5 TM |
3496 | } else if (!S_ISSOCK(mode)) { |
3497 | status = -EINVAL; | |
3498 | goto out_free; | |
1da177e4 | 3499 | } |
1da177e4 | 3500 | |
57dc9a57 | 3501 | status = nfs4_do_create(dir, dentry, data); |
4ea8fed5 | 3502 | out_free: |
57dc9a57 TM |
3503 | nfs4_free_createdata(data); |
3504 | out: | |
1da177e4 LT |
3505 | return status; |
3506 | } | |
3507 | ||
3508 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3509 | struct iattr *sattr, dev_t rdev) | |
3510 | { | |
3511 | struct nfs4_exception exception = { }; | |
3512 | int err; | |
a8a5da99 AK |
3513 | |
3514 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3515 | do { |
3516 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3517 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
3518 | &exception); | |
3519 | } while (exception.retry); | |
3520 | return err; | |
3521 | } | |
3522 | ||
3523 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3524 | struct nfs_fsstat *fsstat) | |
3525 | { | |
3526 | struct nfs4_statfs_arg args = { | |
3527 | .fh = fhandle, | |
3528 | .bitmask = server->attr_bitmask, | |
3529 | }; | |
24ad148a BH |
3530 | struct nfs4_statfs_res res = { |
3531 | .fsstat = fsstat, | |
3532 | }; | |
1da177e4 LT |
3533 | struct rpc_message msg = { |
3534 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3535 | .rpc_argp = &args, | |
24ad148a | 3536 | .rpc_resp = &res, |
1da177e4 LT |
3537 | }; |
3538 | ||
0e574af1 | 3539 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3540 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3541 | } |
3542 | ||
3543 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3544 | { | |
3545 | struct nfs4_exception exception = { }; | |
3546 | int err; | |
3547 | do { | |
3548 | err = nfs4_handle_exception(server, | |
3549 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3550 | &exception); | |
3551 | } while (exception.retry); | |
3552 | return err; | |
3553 | } | |
3554 | ||
3555 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3556 | struct nfs_fsinfo *fsinfo) | |
3557 | { | |
3558 | struct nfs4_fsinfo_arg args = { | |
3559 | .fh = fhandle, | |
3560 | .bitmask = server->attr_bitmask, | |
3561 | }; | |
3dda5e43 BH |
3562 | struct nfs4_fsinfo_res res = { |
3563 | .fsinfo = fsinfo, | |
3564 | }; | |
1da177e4 LT |
3565 | struct rpc_message msg = { |
3566 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3567 | .rpc_argp = &args, | |
3dda5e43 | 3568 | .rpc_resp = &res, |
1da177e4 LT |
3569 | }; |
3570 | ||
7c513058 | 3571 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3572 | } |
3573 | ||
3574 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3575 | { | |
3576 | struct nfs4_exception exception = { }; | |
3577 | int err; | |
3578 | ||
3579 | do { | |
3580 | err = nfs4_handle_exception(server, | |
3581 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
3582 | &exception); | |
3583 | } while (exception.retry); | |
3584 | return err; | |
3585 | } | |
3586 | ||
3587 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3588 | { | |
e38eb650 BS |
3589 | int error; |
3590 | ||
0e574af1 | 3591 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 3592 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
3593 | if (error == 0) { |
3594 | /* block layout checks this! */ | |
3595 | server->pnfs_blksize = fsinfo->blksize; | |
e38eb650 | 3596 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); |
dc182549 | 3597 | } |
e38eb650 BS |
3598 | |
3599 | return error; | |
1da177e4 LT |
3600 | } |
3601 | ||
3602 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3603 | struct nfs_pathconf *pathconf) | |
3604 | { | |
3605 | struct nfs4_pathconf_arg args = { | |
3606 | .fh = fhandle, | |
3607 | .bitmask = server->attr_bitmask, | |
3608 | }; | |
d45b2989 BH |
3609 | struct nfs4_pathconf_res res = { |
3610 | .pathconf = pathconf, | |
3611 | }; | |
1da177e4 LT |
3612 | struct rpc_message msg = { |
3613 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3614 | .rpc_argp = &args, | |
d45b2989 | 3615 | .rpc_resp = &res, |
1da177e4 LT |
3616 | }; |
3617 | ||
3618 | /* None of the pathconf attributes are mandatory to implement */ | |
3619 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3620 | memset(pathconf, 0, sizeof(*pathconf)); | |
3621 | return 0; | |
3622 | } | |
3623 | ||
0e574af1 | 3624 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3625 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3626 | } |
3627 | ||
3628 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3629 | struct nfs_pathconf *pathconf) | |
3630 | { | |
3631 | struct nfs4_exception exception = { }; | |
3632 | int err; | |
3633 | ||
3634 | do { | |
3635 | err = nfs4_handle_exception(server, | |
3636 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3637 | &exception); | |
3638 | } while (exception.retry); | |
3639 | return err; | |
3640 | } | |
3641 | ||
d20581aa BH |
3642 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3643 | { | |
cd841605 | 3644 | nfs_invalidate_atime(data->header->inode); |
d20581aa BH |
3645 | } |
3646 | ||
cbdabc7f | 3647 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3648 | { |
cd841605 | 3649 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
1da177e4 | 3650 | |
9e33bed5 | 3651 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3652 | rpc_restart_call_prepare(task); |
ec06c096 | 3653 | return -EAGAIN; |
1da177e4 | 3654 | } |
8850df99 | 3655 | |
d20581aa | 3656 | __nfs4_read_done_cb(data); |
1da177e4 | 3657 | if (task->tk_status > 0) |
ec06c096 TM |
3658 | renew_lease(server, data->timestamp); |
3659 | return 0; | |
1da177e4 LT |
3660 | } |
3661 | ||
cbdabc7f AA |
3662 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3663 | { | |
3664 | ||
3665 | dprintk("--> %s\n", __func__); | |
3666 | ||
3667 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3668 | return -EAGAIN; | |
3669 | ||
d20581aa BH |
3670 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3671 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3672 | } |
3673 | ||
bdc7f021 | 3674 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3675 | { |
1da177e4 | 3676 | data->timestamp = jiffies; |
cbdabc7f | 3677 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3678 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
9d12b216 | 3679 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
1da177e4 LT |
3680 | } |
3681 | ||
ea7c3303 BS |
3682 | static void nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) |
3683 | { | |
cd841605 | 3684 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
ea7c3303 BS |
3685 | &data->args.seq_args, |
3686 | &data->res.seq_res, | |
3687 | task)) | |
3688 | return; | |
3689 | rpc_call_start(task); | |
1da177e4 LT |
3690 | } |
3691 | ||
b029bc9b | 3692 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3693 | { |
cd841605 | 3694 | struct inode *inode = data->header->inode; |
1da177e4 | 3695 | |
9e33bed5 | 3696 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3697 | rpc_restart_call_prepare(task); |
788e7a89 | 3698 | return -EAGAIN; |
1da177e4 | 3699 | } |
4f9838c7 | 3700 | if (task->tk_status >= 0) { |
1da177e4 | 3701 | renew_lease(NFS_SERVER(inode), data->timestamp); |
5a37f851 | 3702 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); |
4f9838c7 | 3703 | } |
788e7a89 | 3704 | return 0; |
1da177e4 LT |
3705 | } |
3706 | ||
b029bc9b FI |
3707 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3708 | { | |
3709 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3710 | return -EAGAIN; | |
d20581aa BH |
3711 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3712 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3713 | } |
3714 | ||
5a37f851 TM |
3715 | static |
3716 | bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data) | |
a69aef14 | 3717 | { |
5a37f851 TM |
3718 | const struct nfs_pgio_header *hdr = data->header; |
3719 | ||
3720 | /* Don't request attributes for pNFS or O_DIRECT writes */ | |
3721 | if (data->ds_clp != NULL || hdr->dreq != NULL) | |
3722 | return false; | |
3723 | /* Otherwise, request attributes if and only if we don't hold | |
3724 | * a delegation | |
3725 | */ | |
011e2a7f | 3726 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 3727 | } |
a69aef14 | 3728 | |
bdc7f021 | 3729 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3730 | { |
cd841605 | 3731 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
bdc7f021 | 3732 | |
5a37f851 | 3733 | if (!nfs4_write_need_cache_consistency_data(data)) { |
7ffd1064 FI |
3734 | data->args.bitmask = NULL; |
3735 | data->res.fattr = NULL; | |
3736 | } else | |
3737 | data->args.bitmask = server->cache_consistency_bitmask; | |
5a37f851 | 3738 | |
b029bc9b FI |
3739 | if (!data->write_done_cb) |
3740 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3741 | data->res.server = server; |
1da177e4 LT |
3742 | data->timestamp = jiffies; |
3743 | ||
bdc7f021 | 3744 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
9d12b216 | 3745 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3746 | } |
3747 | ||
c6cb80d0 BS |
3748 | static void nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) |
3749 | { | |
cd841605 | 3750 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
c6cb80d0 BS |
3751 | &data->args.seq_args, |
3752 | &data->res.seq_res, | |
3753 | task)) | |
3754 | return; | |
3755 | rpc_call_start(task); | |
1da177e4 LT |
3756 | } |
3757 | ||
0b7c0153 | 3758 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 BS |
3759 | { |
3760 | if (nfs4_setup_sequence(NFS_SERVER(data->inode), | |
3761 | &data->args.seq_args, | |
3762 | &data->res.seq_res, | |
3763 | task)) | |
3764 | return; | |
3765 | rpc_call_start(task); | |
1da177e4 LT |
3766 | } |
3767 | ||
0b7c0153 | 3768 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 3769 | { |
1da177e4 | 3770 | struct inode *inode = data->inode; |
14516c3a | 3771 | |
9e33bed5 | 3772 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 3773 | rpc_restart_call_prepare(task); |
788e7a89 | 3774 | return -EAGAIN; |
1da177e4 | 3775 | } |
788e7a89 | 3776 | return 0; |
1da177e4 LT |
3777 | } |
3778 | ||
0b7c0153 | 3779 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
3780 | { |
3781 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3782 | return -EAGAIN; | |
0b7c0153 | 3783 | return data->commit_done_cb(task, data); |
5f452431 FI |
3784 | } |
3785 | ||
0b7c0153 | 3786 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 3787 | { |
788e7a89 | 3788 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 3789 | |
0b7c0153 FI |
3790 | if (data->commit_done_cb == NULL) |
3791 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 3792 | data->res.server = server; |
bdc7f021 | 3793 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
9d12b216 | 3794 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3795 | } |
3796 | ||
9bc4e3ca CL |
3797 | struct nfs4_renewdata { |
3798 | struct nfs_client *client; | |
3799 | unsigned long timestamp; | |
3800 | }; | |
3801 | ||
1da177e4 LT |
3802 | /* |
3803 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3804 | * standalone procedure for queueing an asynchronous RENEW. | |
3805 | */ | |
9bc4e3ca | 3806 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3807 | { |
9bc4e3ca CL |
3808 | struct nfs4_renewdata *data = calldata; |
3809 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3810 | |
0851de06 AB |
3811 | if (atomic_read(&clp->cl_count) > 1) |
3812 | nfs4_schedule_state_renewal(clp); | |
3813 | nfs_put_client(clp); | |
9bc4e3ca | 3814 | kfree(data); |
dc96aef9 AB |
3815 | } |
3816 | ||
9bc4e3ca | 3817 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3818 | { |
9bc4e3ca CL |
3819 | struct nfs4_renewdata *data = calldata; |
3820 | struct nfs_client *clp = data->client; | |
3821 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3822 | |
3823 | if (task->tk_status < 0) { | |
95baa25c | 3824 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
3825 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
3826 | return; | |
3827 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 3828 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
3829 | return; |
3830 | } | |
3831 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 3832 | } |
452e9352 | 3833 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3834 | } |
3835 | ||
963d8fe5 TM |
3836 | static const struct rpc_call_ops nfs4_renew_ops = { |
3837 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3838 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3839 | }; |
3840 | ||
2f60ea6b | 3841 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
3842 | { |
3843 | struct rpc_message msg = { | |
3844 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3845 | .rpc_argp = clp, | |
b4454fe1 | 3846 | .rpc_cred = cred, |
1da177e4 | 3847 | }; |
9bc4e3ca | 3848 | struct nfs4_renewdata *data; |
1da177e4 | 3849 | |
2f60ea6b TM |
3850 | if (renew_flags == 0) |
3851 | return 0; | |
0851de06 AB |
3852 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3853 | return -EIO; | |
b569ad34 | 3854 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
3855 | if (data == NULL) |
3856 | return -ENOMEM; | |
3857 | data->client = clp; | |
3858 | data->timestamp = jiffies; | |
1da177e4 | 3859 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3860 | &nfs4_renew_ops, data); |
1da177e4 LT |
3861 | } |
3862 | ||
8534d4ec | 3863 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3864 | { |
3865 | struct rpc_message msg = { | |
3866 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3867 | .rpc_argp = clp, | |
b4454fe1 | 3868 | .rpc_cred = cred, |
1da177e4 LT |
3869 | }; |
3870 | unsigned long now = jiffies; | |
3871 | int status; | |
3872 | ||
3873 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3874 | if (status < 0) | |
3875 | return status; | |
452e9352 | 3876 | do_renew_lease(clp, now); |
1da177e4 LT |
3877 | return 0; |
3878 | } | |
3879 | ||
aa1870af BF |
3880 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3881 | { | |
3882 | return (server->caps & NFS_CAP_ACLS) | |
3883 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3884 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3885 | } | |
3886 | ||
21f498c2 TM |
3887 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
3888 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
3889 | * the stack. |
3890 | */ | |
21f498c2 | 3891 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 3892 | |
e9e3d724 NH |
3893 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3894 | struct page **pages, unsigned int *pgbase) | |
3895 | { | |
3896 | struct page *newpage, **spages; | |
3897 | int rc = 0; | |
3898 | size_t len; | |
3899 | spages = pages; | |
3900 | ||
3901 | do { | |
21f498c2 | 3902 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
3903 | newpage = alloc_page(GFP_KERNEL); |
3904 | ||
3905 | if (newpage == NULL) | |
3906 | goto unwind; | |
3907 | memcpy(page_address(newpage), buf, len); | |
3908 | buf += len; | |
3909 | buflen -= len; | |
3910 | *pages++ = newpage; | |
3911 | rc++; | |
3912 | } while (buflen != 0); | |
3913 | ||
3914 | return rc; | |
3915 | ||
3916 | unwind: | |
3917 | for(; rc > 0; rc--) | |
3918 | __free_page(spages[rc-1]); | |
3919 | return -ENOMEM; | |
3920 | } | |
3921 | ||
e50a1c2e BF |
3922 | struct nfs4_cached_acl { |
3923 | int cached; | |
3924 | size_t len; | |
3e9d4154 | 3925 | char data[0]; |
e50a1c2e BF |
3926 | }; |
3927 | ||
3928 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3929 | { | |
3930 | struct nfs_inode *nfsi = NFS_I(inode); | |
3931 | ||
3932 | spin_lock(&inode->i_lock); | |
3933 | kfree(nfsi->nfs4_acl); | |
3934 | nfsi->nfs4_acl = acl; | |
3935 | spin_unlock(&inode->i_lock); | |
3936 | } | |
3937 | ||
3938 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3939 | { | |
3940 | nfs4_set_cached_acl(inode, NULL); | |
3941 | } | |
3942 | ||
3943 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3944 | { | |
3945 | struct nfs_inode *nfsi = NFS_I(inode); | |
3946 | struct nfs4_cached_acl *acl; | |
3947 | int ret = -ENOENT; | |
3948 | ||
3949 | spin_lock(&inode->i_lock); | |
3950 | acl = nfsi->nfs4_acl; | |
3951 | if (acl == NULL) | |
3952 | goto out; | |
3953 | if (buf == NULL) /* user is just asking for length */ | |
3954 | goto out_len; | |
3955 | if (acl->cached == 0) | |
3956 | goto out; | |
3957 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3958 | if (acl->len > buflen) | |
3959 | goto out; | |
3960 | memcpy(buf, acl->data, acl->len); | |
3961 | out_len: | |
3962 | ret = acl->len; | |
3963 | out: | |
3964 | spin_unlock(&inode->i_lock); | |
3965 | return ret; | |
3966 | } | |
3967 | ||
5794d21e | 3968 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
3969 | { |
3970 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 3971 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 3972 | |
1f1ea6c2 | 3973 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 3974 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
3975 | if (acl == NULL) |
3976 | goto out; | |
3977 | acl->cached = 1; | |
5794d21e | 3978 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
3979 | } else { |
3980 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3981 | if (acl == NULL) | |
3982 | goto out; | |
3983 | acl->cached = 0; | |
3984 | } | |
3985 | acl->len = acl_len; | |
3986 | out: | |
3987 | nfs4_set_cached_acl(inode, acl); | |
3988 | } | |
3989 | ||
bf118a34 AA |
3990 | /* |
3991 | * The getxattr API returns the required buffer length when called with a | |
3992 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
3993 | * the required buf. On a NULL buf, we send a page of data to the server | |
3994 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
3995 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
3996 | * the cache. If not so, we throw away the page, and cache the required | |
3997 | * length. The next getxattr call will then produce another round trip to | |
3998 | * the server, this time with the input buf of the required size. | |
3999 | */ | |
16b4289c | 4000 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 4001 | { |
bf118a34 | 4002 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
4003 | struct nfs_getaclargs args = { |
4004 | .fh = NFS_FH(inode), | |
4005 | .acl_pages = pages, | |
4006 | .acl_len = buflen, | |
4007 | }; | |
663c79b3 BH |
4008 | struct nfs_getaclres res = { |
4009 | .acl_len = buflen, | |
4010 | }; | |
aa1870af BF |
4011 | struct rpc_message msg = { |
4012 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
4013 | .rpc_argp = &args, | |
663c79b3 | 4014 | .rpc_resp = &res, |
aa1870af | 4015 | }; |
21f498c2 TM |
4016 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
4017 | int ret = -ENOMEM, i; | |
aa1870af | 4018 | |
bf118a34 AA |
4019 | /* As long as we're doing a round trip to the server anyway, |
4020 | * let's be prepared for a page of acl data. */ | |
4021 | if (npages == 0) | |
4022 | npages = 1; | |
21f498c2 TM |
4023 | if (npages > ARRAY_SIZE(pages)) |
4024 | return -ERANGE; | |
5a006899 | 4025 | |
bf118a34 AA |
4026 | for (i = 0; i < npages; i++) { |
4027 | pages[i] = alloc_page(GFP_KERNEL); | |
4028 | if (!pages[i]) | |
4029 | goto out_free; | |
e50a1c2e | 4030 | } |
5a006899 SP |
4031 | |
4032 | /* for decoding across pages */ | |
4033 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
4034 | if (!res.acl_scratch) | |
4035 | goto out_free; | |
4036 | ||
bf118a34 AA |
4037 | args.acl_len = npages * PAGE_SIZE; |
4038 | args.acl_pgbase = 0; | |
5a006899 | 4039 | |
de040bec | 4040 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
4041 | __func__, buf, buflen, npages, args.acl_len); |
4042 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
4043 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
4044 | if (ret) |
4045 | goto out_free; | |
bf118a34 | 4046 | |
1f1ea6c2 TM |
4047 | /* Handle the case where the passed-in buffer is too short */ |
4048 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
4049 | /* Did the user only issue a request for the acl length? */ | |
4050 | if (buf == NULL) | |
4051 | goto out_ok; | |
e50a1c2e | 4052 | ret = -ERANGE; |
1f1ea6c2 | 4053 | goto out_free; |
e50a1c2e | 4054 | } |
1f1ea6c2 TM |
4055 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
4056 | if (buf) | |
4057 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); | |
4058 | out_ok: | |
4059 | ret = res.acl_len; | |
e50a1c2e | 4060 | out_free: |
bf118a34 AA |
4061 | for (i = 0; i < npages; i++) |
4062 | if (pages[i]) | |
4063 | __free_page(pages[i]); | |
331818f1 TM |
4064 | if (res.acl_scratch) |
4065 | __free_page(res.acl_scratch); | |
aa1870af BF |
4066 | return ret; |
4067 | } | |
4068 | ||
16b4289c TM |
4069 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
4070 | { | |
4071 | struct nfs4_exception exception = { }; | |
4072 | ssize_t ret; | |
4073 | do { | |
4074 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
4075 | if (ret >= 0) | |
4076 | break; | |
4077 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
4078 | } while (exception.retry); | |
4079 | return ret; | |
4080 | } | |
4081 | ||
e50a1c2e BF |
4082 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
4083 | { | |
4084 | struct nfs_server *server = NFS_SERVER(inode); | |
4085 | int ret; | |
4086 | ||
4087 | if (!nfs4_server_supports_acls(server)) | |
4088 | return -EOPNOTSUPP; | |
4089 | ret = nfs_revalidate_inode(server, inode); | |
4090 | if (ret < 0) | |
4091 | return ret; | |
08a22b39 AK |
4092 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
4093 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
4094 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
4095 | if (ret != -ENOENT) | |
bf118a34 AA |
4096 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
4097 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
4098 | return ret; |
4099 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
4100 | } | |
4101 | ||
16b4289c | 4102 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
4103 | { |
4104 | struct nfs_server *server = NFS_SERVER(inode); | |
4105 | struct page *pages[NFS4ACL_MAXPAGES]; | |
4106 | struct nfs_setaclargs arg = { | |
4107 | .fh = NFS_FH(inode), | |
4108 | .acl_pages = pages, | |
4109 | .acl_len = buflen, | |
4110 | }; | |
73c403a9 | 4111 | struct nfs_setaclres res; |
4b580ee3 BF |
4112 | struct rpc_message msg = { |
4113 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
4114 | .rpc_argp = &arg, | |
73c403a9 | 4115 | .rpc_resp = &res, |
4b580ee3 | 4116 | }; |
21f498c2 | 4117 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 4118 | int ret, i; |
4b580ee3 BF |
4119 | |
4120 | if (!nfs4_server_supports_acls(server)) | |
4121 | return -EOPNOTSUPP; | |
21f498c2 TM |
4122 | if (npages > ARRAY_SIZE(pages)) |
4123 | return -ERANGE; | |
e9e3d724 NH |
4124 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
4125 | if (i < 0) | |
4126 | return i; | |
57ec14c5 | 4127 | nfs4_inode_return_delegation(inode); |
7c513058 | 4128 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
4129 | |
4130 | /* | |
4131 | * Free each page after tx, so the only ref left is | |
4132 | * held by the network stack | |
4133 | */ | |
4134 | for (; i > 0; i--) | |
4135 | put_page(pages[i-1]); | |
4136 | ||
08a22b39 AK |
4137 | /* |
4138 | * Acl update can result in inode attribute update. | |
4139 | * so mark the attribute cache invalid. | |
4140 | */ | |
4141 | spin_lock(&inode->i_lock); | |
4142 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
4143 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
4144 | nfs_access_zap_cache(inode); |
4145 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
4146 | return ret; |
4147 | } | |
4148 | ||
16b4289c TM |
4149 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4150 | { | |
4151 | struct nfs4_exception exception = { }; | |
4152 | int err; | |
4153 | do { | |
4154 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
4155 | __nfs4_proc_set_acl(inode, buf, buflen), | |
4156 | &exception); | |
4157 | } while (exception.retry); | |
4158 | return err; | |
4159 | } | |
4160 | ||
1da177e4 | 4161 | static int |
aa5190d0 | 4162 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 4163 | { |
aa5190d0 TM |
4164 | struct nfs_client *clp = server->nfs_client; |
4165 | ||
4166 | if (task->tk_status >= 0) | |
1da177e4 LT |
4167 | return 0; |
4168 | switch(task->tk_status) { | |
a1d0b5ee | 4169 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
4170 | case -NFS4ERR_ADMIN_REVOKED: |
4171 | case -NFS4ERR_BAD_STATEID: | |
14977489 TM |
4172 | if (state == NULL) |
4173 | break; | |
4174 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
4175 | case -NFS4ERR_OPENMODE: |
4176 | if (state == NULL) | |
4177 | break; | |
0400a6b0 TM |
4178 | nfs4_schedule_stateid_recovery(server, state); |
4179 | goto wait_on_recovery; | |
0ced63d1 TM |
4180 | case -NFS4ERR_EXPIRED: |
4181 | if (state != NULL) | |
4182 | nfs4_schedule_stateid_recovery(server, state); | |
1da177e4 | 4183 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 4184 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
4185 | nfs4_schedule_lease_recovery(clp); |
4186 | goto wait_on_recovery; | |
4745e315 AA |
4187 | #if defined(CONFIG_NFS_V4_1) |
4188 | case -NFS4ERR_BADSESSION: | |
4189 | case -NFS4ERR_BADSLOT: | |
4190 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4191 | case -NFS4ERR_DEADSESSION: | |
4192 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4193 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
4194 | case -NFS4ERR_SEQ_MISORDERED: | |
4195 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
4196 | task->tk_status); | |
9f594791 | 4197 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); |
4745e315 AA |
4198 | task->tk_status = 0; |
4199 | return -EAGAIN; | |
4200 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 4201 | case -NFS4ERR_DELAY: |
aa5190d0 | 4202 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 4203 | case -NFS4ERR_GRACE: |
2c643488 | 4204 | case -EKEYEXPIRED: |
1da177e4 LT |
4205 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
4206 | task->tk_status = 0; | |
4207 | return -EAGAIN; | |
a8a4ae3a | 4208 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
4209 | case -NFS4ERR_OLD_STATEID: |
4210 | task->tk_status = 0; | |
4211 | return -EAGAIN; | |
4212 | } | |
4213 | task->tk_status = nfs4_map_errors(task->tk_status); | |
4214 | return 0; | |
0400a6b0 | 4215 | wait_on_recovery: |
a2c0b9e2 | 4216 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
4217 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
4218 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
4219 | task->tk_status = 0; | |
4220 | return -EAGAIN; | |
1da177e4 LT |
4221 | } |
4222 | ||
f092075d CL |
4223 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
4224 | nfs4_verifier *bootverf) | |
cd93710e CL |
4225 | { |
4226 | __be32 verf[2]; | |
4227 | ||
2c820d9a CL |
4228 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
4229 | /* An impossible timestamp guarantees this value | |
4230 | * will never match a generated boot time. */ | |
4231 | verf[0] = 0; | |
4232 | verf[1] = (__be32)(NSEC_PER_SEC + 1); | |
4233 | } else { | |
f092075d CL |
4234 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
4235 | verf[0] = (__be32)nn->boot_time.tv_sec; | |
4236 | verf[1] = (__be32)nn->boot_time.tv_nsec; | |
2c820d9a | 4237 | } |
cd93710e CL |
4238 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
4239 | } | |
4240 | ||
e984a55a CL |
4241 | static unsigned int |
4242 | nfs4_init_nonuniform_client_string(const struct nfs_client *clp, | |
4243 | char *buf, size_t len) | |
4244 | { | |
4245 | unsigned int result; | |
4246 | ||
4247 | rcu_read_lock(); | |
4248 | result = scnprintf(buf, len, "Linux NFSv4.0 %s/%s %s", | |
4249 | clp->cl_ipaddr, | |
4250 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4251 | RPC_DISPLAY_ADDR), | |
4252 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4253 | RPC_DISPLAY_PROTO)); | |
4254 | rcu_read_unlock(); | |
4255 | return result; | |
4256 | } | |
4257 | ||
4258 | static unsigned int | |
4259 | nfs4_init_uniform_client_string(const struct nfs_client *clp, | |
4260 | char *buf, size_t len) | |
4261 | { | |
6f2ea7f2 CL |
4262 | char *nodename = clp->cl_rpcclient->cl_nodename; |
4263 | ||
4264 | if (nfs4_client_id_uniquifier[0] != '\0') | |
4265 | nodename = nfs4_client_id_uniquifier; | |
e984a55a CL |
4266 | return scnprintf(buf, len, "Linux NFSv%u.%u %s", |
4267 | clp->rpc_ops->version, clp->cl_minorversion, | |
6f2ea7f2 | 4268 | nodename); |
e984a55a CL |
4269 | } |
4270 | ||
6bbb4ae8 CL |
4271 | /** |
4272 | * nfs4_proc_setclientid - Negotiate client ID | |
4273 | * @clp: state data structure | |
4274 | * @program: RPC program for NFSv4 callback service | |
4275 | * @port: IP port number for NFS4 callback service | |
4276 | * @cred: RPC credential to use for this call | |
4277 | * @res: where to place the result | |
4278 | * | |
4279 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4280 | */ | |
bb8b27e5 TM |
4281 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
4282 | unsigned short port, struct rpc_cred *cred, | |
4283 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
4284 | { |
4285 | nfs4_verifier sc_verifier; | |
4286 | struct nfs4_setclientid setclientid = { | |
4287 | .sc_verifier = &sc_verifier, | |
4288 | .sc_prog = program, | |
f4eecd5d | 4289 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
4290 | }; |
4291 | struct rpc_message msg = { | |
4292 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
4293 | .rpc_argp = &setclientid, | |
bb8b27e5 | 4294 | .rpc_resp = res, |
286d7d6a | 4295 | .rpc_cred = cred, |
1da177e4 | 4296 | }; |
6bbb4ae8 | 4297 | int status; |
1da177e4 | 4298 | |
de734831 | 4299 | /* nfs_client_id4 */ |
f092075d | 4300 | nfs4_init_boot_verifier(clp, &sc_verifier); |
e984a55a CL |
4301 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) |
4302 | setclientid.sc_name_len = | |
4303 | nfs4_init_uniform_client_string(clp, | |
4304 | setclientid.sc_name, | |
4305 | sizeof(setclientid.sc_name)); | |
4306 | else | |
4307 | setclientid.sc_name_len = | |
4308 | nfs4_init_nonuniform_client_string(clp, | |
4309 | setclientid.sc_name, | |
4310 | sizeof(setclientid.sc_name)); | |
de734831 | 4311 | /* cb_client4 */ |
e984a55a | 4312 | rcu_read_lock(); |
de734831 | 4313 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, |
d4d3c507 CL |
4314 | sizeof(setclientid.sc_netid), |
4315 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4316 | RPC_DISPLAY_NETID)); | |
de734831 CL |
4317 | rcu_read_unlock(); |
4318 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, | |
d4d3c507 | 4319 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
4320 | clp->cl_ipaddr, port >> 8, port & 255); |
4321 | ||
6bbb4ae8 CL |
4322 | dprintk("NFS call setclientid auth=%s, '%.*s'\n", |
4323 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4324 | setclientid.sc_name_len, setclientid.sc_name); | |
4325 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
4326 | dprintk("NFS reply setclientid: %d\n", status); | |
4327 | return status; | |
1da177e4 LT |
4328 | } |
4329 | ||
6bbb4ae8 CL |
4330 | /** |
4331 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
4332 | * @clp: state data structure | |
4333 | * @res: result of a previous SETCLIENTID | |
4334 | * @cred: RPC credential to use for this call | |
4335 | * | |
4336 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4337 | */ | |
fd954ae1 | 4338 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
4339 | struct nfs4_setclientid_res *arg, |
4340 | struct rpc_cred *cred) | |
1da177e4 LT |
4341 | { |
4342 | struct nfs_fsinfo fsinfo; | |
4343 | struct rpc_message msg = { | |
4344 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 4345 | .rpc_argp = arg, |
1da177e4 | 4346 | .rpc_resp = &fsinfo, |
286d7d6a | 4347 | .rpc_cred = cred, |
1da177e4 LT |
4348 | }; |
4349 | unsigned long now; | |
4350 | int status; | |
4351 | ||
6bbb4ae8 CL |
4352 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
4353 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4354 | clp->cl_clientid); | |
1da177e4 | 4355 | now = jiffies; |
1bd714f2 | 4356 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4357 | if (status == 0) { |
4358 | spin_lock(&clp->cl_lock); | |
4359 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
4360 | clp->cl_last_renewal = now; | |
4361 | spin_unlock(&clp->cl_lock); | |
4362 | } | |
6bbb4ae8 | 4363 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
4364 | return status; |
4365 | } | |
4366 | ||
fe650407 TM |
4367 | struct nfs4_delegreturndata { |
4368 | struct nfs4_delegreturnargs args; | |
fa178f29 | 4369 | struct nfs4_delegreturnres res; |
fe650407 TM |
4370 | struct nfs_fh fh; |
4371 | nfs4_stateid stateid; | |
26e976a8 | 4372 | unsigned long timestamp; |
fa178f29 | 4373 | struct nfs_fattr fattr; |
fe650407 TM |
4374 | int rpc_status; |
4375 | }; | |
4376 | ||
fe650407 TM |
4377 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
4378 | { | |
4379 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 4380 | |
14516c3a TM |
4381 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4382 | return; | |
938e1010 | 4383 | |
79708861 RL |
4384 | switch (task->tk_status) { |
4385 | case -NFS4ERR_STALE_STATEID: | |
4386 | case -NFS4ERR_EXPIRED: | |
4387 | case 0: | |
fa178f29 | 4388 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
4389 | break; |
4390 | default: | |
4391 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
4392 | -EAGAIN) { | |
d00c5d43 | 4393 | rpc_restart_call_prepare(task); |
79708861 RL |
4394 | return; |
4395 | } | |
4396 | } | |
4397 | data->rpc_status = task->tk_status; | |
fe650407 TM |
4398 | } |
4399 | ||
4400 | static void nfs4_delegreturn_release(void *calldata) | |
4401 | { | |
fe650407 TM |
4402 | kfree(calldata); |
4403 | } | |
4404 | ||
938e1010 AA |
4405 | #if defined(CONFIG_NFS_V4_1) |
4406 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
4407 | { | |
4408 | struct nfs4_delegreturndata *d_data; | |
4409 | ||
4410 | d_data = (struct nfs4_delegreturndata *)data; | |
4411 | ||
035168ab | 4412 | if (nfs4_setup_sequence(d_data->res.server, |
938e1010 | 4413 | &d_data->args.seq_args, |
9d12b216 | 4414 | &d_data->res.seq_res, task)) |
938e1010 AA |
4415 | return; |
4416 | rpc_call_start(task); | |
4417 | } | |
4418 | #endif /* CONFIG_NFS_V4_1 */ | |
4419 | ||
c8d149f3 | 4420 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
4421 | #if defined(CONFIG_NFS_V4_1) |
4422 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
4423 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
4424 | .rpc_call_done = nfs4_delegreturn_done, |
4425 | .rpc_release = nfs4_delegreturn_release, | |
4426 | }; | |
4427 | ||
e6f81075 | 4428 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
4429 | { |
4430 | struct nfs4_delegreturndata *data; | |
fa178f29 | 4431 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 4432 | struct rpc_task *task; |
5138fde0 TM |
4433 | struct rpc_message msg = { |
4434 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
4435 | .rpc_cred = cred, | |
4436 | }; | |
c970aa85 TM |
4437 | struct rpc_task_setup task_setup_data = { |
4438 | .rpc_client = server->client, | |
5138fde0 | 4439 | .rpc_message = &msg, |
c970aa85 TM |
4440 | .callback_ops = &nfs4_delegreturn_ops, |
4441 | .flags = RPC_TASK_ASYNC, | |
4442 | }; | |
e6f81075 | 4443 | int status = 0; |
fe650407 | 4444 | |
8535b2be | 4445 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
4446 | if (data == NULL) |
4447 | return -ENOMEM; | |
9d12b216 | 4448 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
4449 | data->args.fhandle = &data->fh; |
4450 | data->args.stateid = &data->stateid; | |
9e907fec | 4451 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 4452 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 4453 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
4454 | data->res.fattr = &data->fattr; |
4455 | data->res.server = server; | |
5138fde0 | 4456 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 4457 | data->timestamp = jiffies; |
fe650407 TM |
4458 | data->rpc_status = 0; |
4459 | ||
c970aa85 | 4460 | task_setup_data.callback_data = data; |
1174dd1f TM |
4461 | msg.rpc_argp = &data->args; |
4462 | msg.rpc_resp = &data->res; | |
c970aa85 | 4463 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4464 | if (IS_ERR(task)) |
fe650407 | 4465 | return PTR_ERR(task); |
e6f81075 TM |
4466 | if (!issync) |
4467 | goto out; | |
fe650407 | 4468 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
4469 | if (status != 0) |
4470 | goto out; | |
4471 | status = data->rpc_status; | |
e144cbcc TM |
4472 | if (status == 0) |
4473 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
4474 | else | |
4475 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 4476 | out: |
e6b3c4db | 4477 | rpc_put_task(task); |
fe650407 | 4478 | return status; |
1da177e4 LT |
4479 | } |
4480 | ||
e6f81075 | 4481 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
4482 | { |
4483 | struct nfs_server *server = NFS_SERVER(inode); | |
4484 | struct nfs4_exception exception = { }; | |
4485 | int err; | |
4486 | do { | |
e6f81075 | 4487 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
4488 | switch (err) { |
4489 | case -NFS4ERR_STALE_STATEID: | |
4490 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
4491 | case 0: |
4492 | return 0; | |
4493 | } | |
4494 | err = nfs4_handle_exception(server, err, &exception); | |
4495 | } while (exception.retry); | |
4496 | return err; | |
4497 | } | |
4498 | ||
4499 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
4500 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
4501 | ||
4502 | /* | |
4503 | * sleep, with exponential backoff, and retry the LOCK operation. | |
4504 | */ | |
4505 | static unsigned long | |
4506 | nfs4_set_lock_task_retry(unsigned long timeout) | |
4507 | { | |
d310310c | 4508 | freezable_schedule_timeout_killable(timeout); |
1da177e4 LT |
4509 | timeout <<= 1; |
4510 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
4511 | return NFS4_LOCK_MAXTIMEOUT; | |
4512 | return timeout; | |
4513 | } | |
4514 | ||
1da177e4 LT |
4515 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4516 | { | |
4517 | struct inode *inode = state->inode; | |
4518 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 4519 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 4520 | struct nfs_lockt_args arg = { |
1da177e4 | 4521 | .fh = NFS_FH(inode), |
911d1aaf | 4522 | .fl = request, |
1da177e4 | 4523 | }; |
911d1aaf TM |
4524 | struct nfs_lockt_res res = { |
4525 | .denied = request, | |
1da177e4 LT |
4526 | }; |
4527 | struct rpc_message msg = { | |
4528 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
4529 | .rpc_argp = &arg, | |
4530 | .rpc_resp = &res, | |
4531 | .rpc_cred = state->owner->so_cred, | |
4532 | }; | |
1da177e4 LT |
4533 | struct nfs4_lock_state *lsp; |
4534 | int status; | |
4535 | ||
911d1aaf | 4536 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
4537 | status = nfs4_set_lock_state(state, request); |
4538 | if (status != 0) | |
4539 | goto out; | |
4540 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 4541 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4542 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 4543 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
4544 | switch (status) { |
4545 | case 0: | |
4546 | request->fl_type = F_UNLCK; | |
4547 | break; | |
4548 | case -NFS4ERR_DENIED: | |
4549 | status = 0; | |
1da177e4 | 4550 | } |
70cc6487 | 4551 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 4552 | out: |
1da177e4 LT |
4553 | return status; |
4554 | } | |
4555 | ||
4556 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4557 | { | |
4558 | struct nfs4_exception exception = { }; | |
4559 | int err; | |
4560 | ||
4561 | do { | |
4562 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
4563 | _nfs4_proc_getlk(state, cmd, request), | |
4564 | &exception); | |
4565 | } while (exception.retry); | |
4566 | return err; | |
4567 | } | |
4568 | ||
4569 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4570 | { | |
4571 | int res = 0; | |
4572 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4573 | case FL_POSIX: | |
4574 | res = posix_lock_file_wait(file, fl); | |
4575 | break; | |
4576 | case FL_FLOCK: | |
4577 | res = flock_lock_file_wait(file, fl); | |
4578 | break; | |
4579 | default: | |
4580 | BUG(); | |
4581 | } | |
1da177e4 LT |
4582 | return res; |
4583 | } | |
4584 | ||
faf5f49c | 4585 | struct nfs4_unlockdata { |
911d1aaf TM |
4586 | struct nfs_locku_args arg; |
4587 | struct nfs_locku_res res; | |
faf5f49c TM |
4588 | struct nfs4_lock_state *lsp; |
4589 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4590 | struct file_lock fl; |
4591 | const struct nfs_server *server; | |
26e976a8 | 4592 | unsigned long timestamp; |
faf5f49c TM |
4593 | }; |
4594 | ||
911d1aaf TM |
4595 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
4596 | struct nfs_open_context *ctx, | |
4597 | struct nfs4_lock_state *lsp, | |
4598 | struct nfs_seqid *seqid) | |
4599 | { | |
4600 | struct nfs4_unlockdata *p; | |
4601 | struct inode *inode = lsp->ls_state->inode; | |
4602 | ||
8535b2be | 4603 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
4604 | if (p == NULL) |
4605 | return NULL; | |
4606 | p->arg.fh = NFS_FH(inode); | |
4607 | p->arg.fl = &p->fl; | |
4608 | p->arg.seqid = seqid; | |
c1d51931 | 4609 | p->res.seqid = seqid; |
911d1aaf TM |
4610 | p->arg.stateid = &lsp->ls_stateid; |
4611 | p->lsp = lsp; | |
4612 | atomic_inc(&lsp->ls_count); | |
4613 | /* Ensure we don't close file until we're done freeing locks! */ | |
4614 | p->ctx = get_nfs_open_context(ctx); | |
4615 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4616 | p->server = NFS_SERVER(inode); | |
4617 | return p; | |
4618 | } | |
4619 | ||
06f814a3 | 4620 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 4621 | { |
963d8fe5 | 4622 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 4623 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
4624 | nfs4_put_lock_state(calldata->lsp); |
4625 | put_nfs_open_context(calldata->ctx); | |
4626 | kfree(calldata); | |
faf5f49c TM |
4627 | } |
4628 | ||
963d8fe5 | 4629 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 4630 | { |
963d8fe5 | 4631 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4632 | |
14516c3a TM |
4633 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
4634 | return; | |
faf5f49c TM |
4635 | switch (task->tk_status) { |
4636 | case 0: | |
f597c537 TM |
4637 | nfs4_stateid_copy(&calldata->lsp->ls_stateid, |
4638 | &calldata->res.stateid); | |
26e976a8 | 4639 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 4640 | break; |
9e33bed5 TM |
4641 | case -NFS4ERR_BAD_STATEID: |
4642 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4643 | case -NFS4ERR_STALE_STATEID: |
4644 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4645 | break; |
4646 | default: | |
9e33bed5 | 4647 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 4648 | rpc_restart_call_prepare(task); |
faf5f49c | 4649 | } |
2b1bc308 | 4650 | nfs_release_seqid(calldata->arg.seqid); |
faf5f49c TM |
4651 | } |
4652 | ||
4ce70ada | 4653 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4654 | { |
4ce70ada | 4655 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4656 | |
911d1aaf | 4657 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c | 4658 | return; |
795a88c9 | 4659 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 TM |
4660 | /* Note: exit _without_ running nfs4_locku_done */ |
4661 | task->tk_action = NULL; | |
faf5f49c TM |
4662 | return; |
4663 | } | |
26e976a8 | 4664 | calldata->timestamp = jiffies; |
035168ab | 4665 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 4666 | &calldata->arg.seq_args, |
2240a9e2 TM |
4667 | &calldata->res.seq_res, |
4668 | task) != 0) | |
4669 | nfs_release_seqid(calldata->arg.seqid); | |
4670 | else | |
4671 | rpc_call_start(task); | |
faf5f49c TM |
4672 | } |
4673 | ||
963d8fe5 | 4674 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4675 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4676 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4677 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4678 | }; |
4679 | ||
a5d16a4d TM |
4680 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4681 | struct nfs_open_context *ctx, | |
4682 | struct nfs4_lock_state *lsp, | |
4683 | struct nfs_seqid *seqid) | |
4684 | { | |
4685 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4686 | struct rpc_message msg = { |
4687 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4688 | .rpc_cred = ctx->cred, | |
4689 | }; | |
c970aa85 TM |
4690 | struct rpc_task_setup task_setup_data = { |
4691 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4692 | .rpc_message = &msg, |
c970aa85 | 4693 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4694 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4695 | .flags = RPC_TASK_ASYNC, |
4696 | }; | |
a5d16a4d | 4697 | |
137d6aca FF |
4698 | /* Ensure this is an unlock - when canceling a lock, the |
4699 | * canceled lock is passed in, and it won't be an unlock. | |
4700 | */ | |
4701 | fl->fl_type = F_UNLCK; | |
4702 | ||
a5d16a4d TM |
4703 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4704 | if (data == NULL) { | |
4705 | nfs_free_seqid(seqid); | |
4706 | return ERR_PTR(-ENOMEM); | |
4707 | } | |
4708 | ||
9d12b216 | 4709 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4710 | msg.rpc_argp = &data->arg; |
4711 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4712 | task_setup_data.callback_data = data; |
4713 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4714 | } |
4715 | ||
faf5f49c TM |
4716 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4717 | { | |
19e03c57 | 4718 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 4719 | struct nfs_seqid *seqid; |
1da177e4 | 4720 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4721 | struct rpc_task *task; |
4722 | int status = 0; | |
536ff0f8 | 4723 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4724 | |
8d0a8a9d | 4725 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4726 | /* Unlock _before_ we do the RPC call */ |
4727 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
4728 | down_read(&nfsi->rwsem); |
4729 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4730 | up_read(&nfsi->rwsem); | |
9b073574 | 4731 | goto out; |
19e03c57 TM |
4732 | } |
4733 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 4734 | if (status != 0) |
9b073574 TM |
4735 | goto out; |
4736 | /* Is this a delegated lock? */ | |
4737 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
4738 | goto out; | |
8d0a8a9d | 4739 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 4740 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4741 | status = -ENOMEM; |
911d1aaf | 4742 | if (seqid == NULL) |
9b073574 | 4743 | goto out; |
cd3758e3 | 4744 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4745 | status = PTR_ERR(task); |
4746 | if (IS_ERR(task)) | |
9b073574 | 4747 | goto out; |
a5d16a4d | 4748 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4749 | rpc_put_task(task); |
9b073574 | 4750 | out: |
536ff0f8 | 4751 | request->fl_flags = fl_flags; |
1da177e4 LT |
4752 | return status; |
4753 | } | |
4754 | ||
a5d16a4d TM |
4755 | struct nfs4_lockdata { |
4756 | struct nfs_lock_args arg; | |
4757 | struct nfs_lock_res res; | |
4758 | struct nfs4_lock_state *lsp; | |
4759 | struct nfs_open_context *ctx; | |
4760 | struct file_lock fl; | |
26e976a8 | 4761 | unsigned long timestamp; |
a5d16a4d TM |
4762 | int rpc_status; |
4763 | int cancelled; | |
66179efe | 4764 | struct nfs_server *server; |
a5d16a4d TM |
4765 | }; |
4766 | ||
4767 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4768 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4769 | gfp_t gfp_mask) | |
1da177e4 | 4770 | { |
a5d16a4d TM |
4771 | struct nfs4_lockdata *p; |
4772 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4773 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4774 | |
8535b2be | 4775 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4776 | if (p == NULL) |
4777 | return NULL; | |
4778 | ||
4779 | p->arg.fh = NFS_FH(inode); | |
4780 | p->arg.fl = &p->fl; | |
8535b2be | 4781 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4782 | if (p->arg.open_seqid == NULL) |
4783 | goto out_free; | |
8535b2be | 4784 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4785 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4786 | goto out_free_seqid; |
a5d16a4d | 4787 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4788 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 4789 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4790 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4791 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4792 | p->lsp = lsp; |
66179efe | 4793 | p->server = server; |
a5d16a4d TM |
4794 | atomic_inc(&lsp->ls_count); |
4795 | p->ctx = get_nfs_open_context(ctx); | |
4796 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4797 | return p; | |
2f74c0a0 TM |
4798 | out_free_seqid: |
4799 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4800 | out_free: |
4801 | kfree(p); | |
4802 | return NULL; | |
4803 | } | |
4804 | ||
4805 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4806 | { | |
4807 | struct nfs4_lockdata *data = calldata; | |
4808 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4809 | |
3110ff80 | 4810 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
4811 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
4812 | return; | |
a5d16a4d TM |
4813 | /* Do we need to do an open_to_lock_owner? */ |
4814 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 | 4815 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
2240a9e2 | 4816 | goto out_release_lock_seqid; |
a5d16a4d TM |
4817 | data->arg.open_stateid = &state->stateid; |
4818 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4819 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4820 | } else |
4821 | data->arg.new_lock_owner = 0; | |
26e976a8 | 4822 | data->timestamp = jiffies; |
035168ab TM |
4823 | if (nfs4_setup_sequence(data->server, |
4824 | &data->arg.seq_args, | |
2240a9e2 TM |
4825 | &data->res.seq_res, |
4826 | task) == 0) { | |
4827 | rpc_call_start(task); | |
66179efe | 4828 | return; |
2240a9e2 TM |
4829 | } |
4830 | nfs_release_seqid(data->arg.open_seqid); | |
4831 | out_release_lock_seqid: | |
4832 | nfs_release_seqid(data->arg.lock_seqid); | |
4833 | dprintk("%s: done!, ret = %d\n", __func__, task->tk_status); | |
a5d16a4d TM |
4834 | } |
4835 | ||
b257957e AB |
4836 | static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata) |
4837 | { | |
4838 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
4839 | nfs4_lock_prepare(task, calldata); | |
4840 | } | |
4841 | ||
a5d16a4d TM |
4842 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4843 | { | |
4844 | struct nfs4_lockdata *data = calldata; | |
4845 | ||
3110ff80 | 4846 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4847 | |
14516c3a TM |
4848 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4849 | return; | |
66179efe | 4850 | |
a5d16a4d | 4851 | data->rpc_status = task->tk_status; |
a5d16a4d | 4852 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4853 | if (data->rpc_status == 0) |
4854 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4855 | else | |
4856 | goto out; | |
4857 | } | |
4858 | if (data->rpc_status == 0) { | |
f597c537 | 4859 | nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); |
795a88c9 | 4860 | set_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags); |
3d4ff43d | 4861 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 4862 | } |
a5d16a4d | 4863 | out: |
3110ff80 | 4864 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4865 | } |
4866 | ||
4867 | static void nfs4_lock_release(void *calldata) | |
4868 | { | |
4869 | struct nfs4_lockdata *data = calldata; | |
4870 | ||
3110ff80 | 4871 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4872 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4873 | if (data->cancelled != 0) { |
4874 | struct rpc_task *task; | |
4875 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4876 | data->arg.lock_seqid); | |
4877 | if (!IS_ERR(task)) | |
bf294b41 | 4878 | rpc_put_task_async(task); |
3110ff80 | 4879 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4880 | } else |
4881 | nfs_free_seqid(data->arg.lock_seqid); | |
4882 | nfs4_put_lock_state(data->lsp); | |
4883 | put_nfs_open_context(data->ctx); | |
4884 | kfree(data); | |
3110ff80 | 4885 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4886 | } |
4887 | ||
4888 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4889 | .rpc_call_prepare = nfs4_lock_prepare, | |
4890 | .rpc_call_done = nfs4_lock_done, | |
4891 | .rpc_release = nfs4_lock_release, | |
4892 | }; | |
4893 | ||
b257957e AB |
4894 | static const struct rpc_call_ops nfs4_recover_lock_ops = { |
4895 | .rpc_call_prepare = nfs4_recover_lock_prepare, | |
4896 | .rpc_call_done = nfs4_lock_done, | |
4897 | .rpc_release = nfs4_lock_release, | |
4898 | }; | |
4899 | ||
2bee72a6 TM |
4900 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4901 | { | |
2bee72a6 TM |
4902 | switch (error) { |
4903 | case -NFS4ERR_ADMIN_REVOKED: | |
4904 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4905 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 4906 | if (new_lock_owner != 0 || |
795a88c9 | 4907 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 4908 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4909 | break; |
4910 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4911 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4912 | case -NFS4ERR_EXPIRED: |
4913 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4914 | }; |
4915 | } | |
4916 | ||
afe6c27c | 4917 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4918 | { |
4919 | struct nfs4_lockdata *data; | |
4920 | struct rpc_task *task; | |
5138fde0 TM |
4921 | struct rpc_message msg = { |
4922 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4923 | .rpc_cred = state->owner->so_cred, | |
4924 | }; | |
c970aa85 TM |
4925 | struct rpc_task_setup task_setup_data = { |
4926 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4927 | .rpc_message = &msg, |
c970aa85 | 4928 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4929 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4930 | .flags = RPC_TASK_ASYNC, |
4931 | }; | |
a5d16a4d TM |
4932 | int ret; |
4933 | ||
3110ff80 | 4934 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4935 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4936 | fl->fl_u.nfs4_fl.owner, |
4937 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4938 | if (data == NULL) |
4939 | return -ENOMEM; | |
4940 | if (IS_SETLKW(cmd)) | |
4941 | data->arg.block = 1; | |
b257957e AB |
4942 | if (recovery_type > NFS_LOCK_NEW) { |
4943 | if (recovery_type == NFS_LOCK_RECLAIM) | |
afe6c27c | 4944 | data->arg.reclaim = NFS_LOCK_RECLAIM; |
b257957e AB |
4945 | task_setup_data.callback_ops = &nfs4_recover_lock_ops; |
4946 | } | |
9d12b216 | 4947 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4948 | msg.rpc_argp = &data->arg; |
4949 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4950 | task_setup_data.callback_data = data; |
4951 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 4952 | if (IS_ERR(task)) |
a5d16a4d | 4953 | return PTR_ERR(task); |
a5d16a4d TM |
4954 | ret = nfs4_wait_for_completion_rpc_task(task); |
4955 | if (ret == 0) { | |
4956 | ret = data->rpc_status; | |
2bee72a6 TM |
4957 | if (ret) |
4958 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4959 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4960 | } else |
4961 | data->cancelled = 1; | |
e6b3c4db | 4962 | rpc_put_task(task); |
3110ff80 | 4963 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4964 | return ret; |
1da177e4 LT |
4965 | } |
4966 | ||
4967 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4968 | { | |
202b50dc | 4969 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4970 | struct nfs4_exception exception = { |
4971 | .inode = state->inode, | |
4972 | }; | |
202b50dc TM |
4973 | int err; |
4974 | ||
4975 | do { | |
42a2d13e TM |
4976 | /* Cache the lock if possible... */ |
4977 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4978 | return 0; | |
afe6c27c | 4979 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4980 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4981 | break; |
4982 | nfs4_handle_exception(server, err, &exception); | |
4983 | } while (exception.retry); | |
4984 | return err; | |
1da177e4 LT |
4985 | } |
4986 | ||
4987 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4988 | { | |
202b50dc | 4989 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4990 | struct nfs4_exception exception = { |
4991 | .inode = state->inode, | |
4992 | }; | |
202b50dc TM |
4993 | int err; |
4994 | ||
6bfc93ef TM |
4995 | err = nfs4_set_lock_state(state, request); |
4996 | if (err != 0) | |
4997 | return err; | |
202b50dc | 4998 | do { |
42a2d13e TM |
4999 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
5000 | return 0; | |
afe6c27c | 5001 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
5002 | switch (err) { |
5003 | default: | |
5004 | goto out; | |
5005 | case -NFS4ERR_GRACE: | |
5006 | case -NFS4ERR_DELAY: | |
5007 | nfs4_handle_exception(server, err, &exception); | |
5008 | err = 0; | |
5009 | } | |
202b50dc | 5010 | } while (exception.retry); |
a9ed2e25 | 5011 | out: |
202b50dc | 5012 | return err; |
1da177e4 LT |
5013 | } |
5014 | ||
f062eb6c | 5015 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd CL |
5016 | /** |
5017 | * nfs41_check_expired_locks - possibly free a lock stateid | |
5018 | * | |
5019 | * @state: NFSv4 state for an inode | |
5020 | * | |
5021 | * Returns NFS_OK if recovery for this stateid is now finished. | |
5022 | * Otherwise a negative NFS4ERR value is returned. | |
5023 | */ | |
b01dd1d8 | 5024 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 5025 | { |
eb64cf96 | 5026 | int status, ret = -NFS4ERR_BAD_STATEID; |
b01dd1d8 | 5027 | struct nfs4_lock_state *lsp; |
f062eb6c BS |
5028 | struct nfs_server *server = NFS_SERVER(state->inode); |
5029 | ||
b01dd1d8 | 5030 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
795a88c9 | 5031 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { |
b01dd1d8 BS |
5032 | status = nfs41_test_stateid(server, &lsp->ls_stateid); |
5033 | if (status != NFS_OK) { | |
3e60ffdd CL |
5034 | /* Free the stateid unless the server |
5035 | * informs us the stateid is unrecognized. */ | |
89af2739 CL |
5036 | if (status != -NFS4ERR_BAD_STATEID) |
5037 | nfs41_free_stateid(server, | |
5038 | &lsp->ls_stateid); | |
795a88c9 | 5039 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); |
b01dd1d8 BS |
5040 | ret = status; |
5041 | } | |
5042 | } | |
5043 | }; | |
5044 | ||
5045 | return ret; | |
5046 | } | |
5047 | ||
5048 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
5049 | { | |
5050 | int status = NFS_OK; | |
5051 | ||
5052 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
5053 | status = nfs41_check_expired_locks(state); | |
eb64cf96 CL |
5054 | if (status != NFS_OK) |
5055 | status = nfs4_lock_expired(state, request); | |
5056 | return status; | |
f062eb6c BS |
5057 | } |
5058 | #endif | |
5059 | ||
1da177e4 LT |
5060 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
5061 | { | |
19e03c57 | 5062 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 5063 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 5064 | int status = -ENOLCK; |
1da177e4 | 5065 | |
8e469ebd TM |
5066 | if ((fl_flags & FL_POSIX) && |
5067 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
5068 | goto out; | |
6bfc93ef | 5069 | /* Is this a delegated open? */ |
6bfc93ef TM |
5070 | status = nfs4_set_lock_state(state, request); |
5071 | if (status != 0) | |
5072 | goto out; | |
01c3b861 TM |
5073 | request->fl_flags |= FL_ACCESS; |
5074 | status = do_vfs_lock(request->fl_file, request); | |
5075 | if (status < 0) | |
5076 | goto out; | |
19e03c57 | 5077 | down_read(&nfsi->rwsem); |
01c3b861 | 5078 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 5079 | /* Yes: cache locks! */ |
01c3b861 | 5080 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
5081 | request->fl_flags = fl_flags & ~FL_SLEEP; |
5082 | status = do_vfs_lock(request->fl_file, request); | |
5083 | goto out_unlock; | |
01c3b861 | 5084 | } |
afe6c27c | 5085 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 5086 | if (status != 0) |
01c3b861 | 5087 | goto out_unlock; |
6bfc93ef | 5088 | /* Note: we always want to sleep here! */ |
01c3b861 | 5089 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 5090 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
5091 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
5092 | "manager!\n", __func__); | |
01c3b861 | 5093 | out_unlock: |
19e03c57 | 5094 | up_read(&nfsi->rwsem); |
01c3b861 TM |
5095 | out: |
5096 | request->fl_flags = fl_flags; | |
1da177e4 LT |
5097 | return status; |
5098 | } | |
5099 | ||
5100 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
5101 | { | |
a1d0b5ee TM |
5102 | struct nfs4_exception exception = { |
5103 | .state = state, | |
05ffe24f | 5104 | .inode = state->inode, |
a1d0b5ee | 5105 | }; |
1da177e4 LT |
5106 | int err; |
5107 | ||
5108 | do { | |
965b5d67 TM |
5109 | err = _nfs4_proc_setlk(state, cmd, request); |
5110 | if (err == -NFS4ERR_DENIED) | |
5111 | err = -EAGAIN; | |
1da177e4 | 5112 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 5113 | err, &exception); |
1da177e4 LT |
5114 | } while (exception.retry); |
5115 | return err; | |
5116 | } | |
5117 | ||
5118 | static int | |
5119 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
5120 | { | |
5121 | struct nfs_open_context *ctx; | |
5122 | struct nfs4_state *state; | |
5123 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
5124 | int status; | |
5125 | ||
5126 | /* verify open state */ | |
cd3758e3 | 5127 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
5128 | state = ctx->state; |
5129 | ||
5130 | if (request->fl_start < 0 || request->fl_end < 0) | |
5131 | return -EINVAL; | |
5132 | ||
d953126a TM |
5133 | if (IS_GETLK(cmd)) { |
5134 | if (state != NULL) | |
5135 | return nfs4_proc_getlk(state, F_GETLK, request); | |
5136 | return 0; | |
5137 | } | |
1da177e4 LT |
5138 | |
5139 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
5140 | return -EINVAL; | |
5141 | ||
d953126a TM |
5142 | if (request->fl_type == F_UNLCK) { |
5143 | if (state != NULL) | |
5144 | return nfs4_proc_unlck(state, cmd, request); | |
5145 | return 0; | |
5146 | } | |
1da177e4 | 5147 | |
d953126a TM |
5148 | if (state == NULL) |
5149 | return -ENOLCK; | |
55725513 TM |
5150 | /* |
5151 | * Don't rely on the VFS having checked the file open mode, | |
5152 | * since it won't do this for flock() locks. | |
5153 | */ | |
f44106e2 | 5154 | switch (request->fl_type) { |
55725513 TM |
5155 | case F_RDLCK: |
5156 | if (!(filp->f_mode & FMODE_READ)) | |
5157 | return -EBADF; | |
5158 | break; | |
5159 | case F_WRLCK: | |
5160 | if (!(filp->f_mode & FMODE_WRITE)) | |
5161 | return -EBADF; | |
5162 | } | |
5163 | ||
1da177e4 LT |
5164 | do { |
5165 | status = nfs4_proc_setlk(state, cmd, request); | |
5166 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
5167 | break; | |
5168 | timeout = nfs4_set_lock_task_retry(timeout); | |
5169 | status = -ERESTARTSYS; | |
5170 | if (signalled()) | |
5171 | break; | |
5172 | } while(status < 0); | |
1da177e4 LT |
5173 | return status; |
5174 | } | |
5175 | ||
888e694c TM |
5176 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
5177 | { | |
5178 | struct nfs_server *server = NFS_SERVER(state->inode); | |
5179 | struct nfs4_exception exception = { }; | |
5180 | int err; | |
5181 | ||
5182 | err = nfs4_set_lock_state(state, fl); | |
5183 | if (err != 0) | |
5184 | goto out; | |
5185 | do { | |
afe6c27c | 5186 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
5187 | switch (err) { |
5188 | default: | |
a030889a WAA |
5189 | printk(KERN_ERR "NFS: %s: unhandled error " |
5190 | "%d.\n", __func__, err); | |
d5122201 | 5191 | case 0: |
965b5d67 | 5192 | case -ESTALE: |
d5122201 TM |
5193 | goto out; |
5194 | case -NFS4ERR_EXPIRED: | |
0ced63d1 | 5195 | nfs4_schedule_stateid_recovery(server, state); |
d5122201 | 5196 | case -NFS4ERR_STALE_CLIENTID: |
965b5d67 | 5197 | case -NFS4ERR_STALE_STATEID: |
0400a6b0 TM |
5198 | nfs4_schedule_lease_recovery(server->nfs_client); |
5199 | goto out; | |
74e7bb73 RL |
5200 | case -NFS4ERR_BADSESSION: |
5201 | case -NFS4ERR_BADSLOT: | |
5202 | case -NFS4ERR_BAD_HIGH_SLOT: | |
5203 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
5204 | case -NFS4ERR_DEADSESSION: | |
9f594791 | 5205 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); |
d5122201 | 5206 | goto out; |
965b5d67 TM |
5207 | case -ERESTARTSYS: |
5208 | /* | |
5209 | * The show must go on: exit, but mark the | |
5210 | * stateid as needing recovery. | |
5211 | */ | |
a1d0b5ee | 5212 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
5213 | case -NFS4ERR_ADMIN_REVOKED: |
5214 | case -NFS4ERR_BAD_STATEID: | |
5215 | case -NFS4ERR_OPENMODE: | |
0400a6b0 | 5216 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
5217 | err = 0; |
5218 | goto out; | |
168667c4 TM |
5219 | case -EKEYEXPIRED: |
5220 | /* | |
5221 | * User RPCSEC_GSS context has expired. | |
5222 | * We cannot recover this stateid now, so | |
5223 | * skip it and allow recovery thread to | |
5224 | * proceed. | |
5225 | */ | |
5226 | err = 0; | |
5227 | goto out; | |
965b5d67 TM |
5228 | case -ENOMEM: |
5229 | case -NFS4ERR_DENIED: | |
5230 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
5231 | err = 0; | |
5232 | goto out; | |
d5122201 TM |
5233 | case -NFS4ERR_DELAY: |
5234 | break; | |
5235 | } | |
888e694c TM |
5236 | err = nfs4_handle_exception(server, err, &exception); |
5237 | } while (exception.retry); | |
5238 | out: | |
5239 | return err; | |
5240 | } | |
6b3b5496 | 5241 | |
cf470c3e TM |
5242 | struct nfs_release_lockowner_data { |
5243 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 5244 | struct nfs_server *server; |
cf470c3e TM |
5245 | struct nfs_release_lockowner_args args; |
5246 | }; | |
5247 | ||
d3c7b7cc TM |
5248 | static void nfs4_release_lockowner_release(void *calldata) |
5249 | { | |
cf470c3e | 5250 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 5251 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
5252 | kfree(calldata); |
5253 | } | |
5254 | ||
17280175 | 5255 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
d3c7b7cc TM |
5256 | .rpc_release = nfs4_release_lockowner_release, |
5257 | }; | |
5258 | ||
cf470c3e | 5259 | int nfs4_release_lockowner(struct nfs4_lock_state *lsp) |
d3c7b7cc TM |
5260 | { |
5261 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
cf470c3e | 5262 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
5263 | struct rpc_message msg = { |
5264 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
5265 | }; | |
5266 | ||
5267 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
cf470c3e TM |
5268 | return -EINVAL; |
5269 | data = kmalloc(sizeof(*data), GFP_NOFS); | |
5270 | if (!data) | |
5271 | return -ENOMEM; | |
5272 | data->lsp = lsp; | |
5ae67c4f | 5273 | data->server = server; |
cf470c3e TM |
5274 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
5275 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
5276 | data->args.lock_owner.s_dev = server->s_dev; | |
5277 | msg.rpc_argp = &data->args; | |
5278 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); | |
5279 | return 0; | |
d3c7b7cc TM |
5280 | } |
5281 | ||
aa1870af BF |
5282 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
5283 | ||
64c2ce8b AK |
5284 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
5285 | const void *buf, size_t buflen, | |
5286 | int flags, int type) | |
6b3b5496 | 5287 | { |
64c2ce8b AK |
5288 | if (strcmp(key, "") != 0) |
5289 | return -EINVAL; | |
4b580ee3 | 5290 | |
64c2ce8b | 5291 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5292 | } |
5293 | ||
64c2ce8b AK |
5294 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
5295 | void *buf, size_t buflen, int type) | |
6b3b5496 | 5296 | { |
64c2ce8b AK |
5297 | if (strcmp(key, "") != 0) |
5298 | return -EINVAL; | |
aa1870af | 5299 | |
64c2ce8b | 5300 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5301 | } |
5302 | ||
64c2ce8b AK |
5303 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
5304 | size_t list_len, const char *name, | |
5305 | size_t name_len, int type) | |
6b3b5496 | 5306 | { |
64c2ce8b | 5307 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 5308 | |
096455a2 BF |
5309 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
5310 | return 0; | |
64c2ce8b AK |
5311 | |
5312 | if (list && len <= list_len) | |
5313 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 5314 | return len; |
6b3b5496 BF |
5315 | } |
5316 | ||
533eb461 AA |
5317 | /* |
5318 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
5319 | */ | |
69aaaae1 TM |
5320 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
5321 | { | |
533eb461 AA |
5322 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
5323 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
5324 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 5325 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
5326 | return; |
5327 | ||
5328 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 5329 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
5330 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
5331 | fattr->nlink = 2; | |
5332 | } | |
5333 | ||
f05d147f BS |
5334 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5335 | const struct qstr *name, | |
5336 | struct nfs4_fs_locations *fs_locations, | |
5337 | struct page *page) | |
683b57b4 TM |
5338 | { |
5339 | struct nfs_server *server = NFS_SERVER(dir); | |
5340 | u32 bitmask[2] = { | |
361e624f | 5341 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
5342 | }; |
5343 | struct nfs4_fs_locations_arg args = { | |
5344 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 5345 | .name = name, |
683b57b4 TM |
5346 | .page = page, |
5347 | .bitmask = bitmask, | |
5348 | }; | |
22958463 BH |
5349 | struct nfs4_fs_locations_res res = { |
5350 | .fs_locations = fs_locations, | |
5351 | }; | |
683b57b4 TM |
5352 | struct rpc_message msg = { |
5353 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
5354 | .rpc_argp = &args, | |
22958463 | 5355 | .rpc_resp = &res, |
683b57b4 TM |
5356 | }; |
5357 | int status; | |
5358 | ||
3110ff80 | 5359 | dprintk("%s: start\n", __func__); |
533eb461 AA |
5360 | |
5361 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
5362 | * is not supported */ | |
5363 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
5364 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
5365 | else | |
5366 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
5367 | ||
c228fd3a | 5368 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 5369 | fs_locations->server = server; |
830b8e33 | 5370 | fs_locations->nlocations = 0; |
f05d147f | 5371 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 5372 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
5373 | return status; |
5374 | } | |
5375 | ||
f05d147f BS |
5376 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5377 | const struct qstr *name, | |
5378 | struct nfs4_fs_locations *fs_locations, | |
5379 | struct page *page) | |
db0a9593 BS |
5380 | { |
5381 | struct nfs4_exception exception = { }; | |
5382 | int err; | |
5383 | do { | |
5384 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
f05d147f | 5385 | _nfs4_proc_fs_locations(client, dir, name, fs_locations, page), |
db0a9593 BS |
5386 | &exception); |
5387 | } while (exception.retry); | |
5388 | return err; | |
5389 | } | |
5390 | ||
5a5ea0d4 BS |
5391 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
5392 | { | |
5393 | int status; | |
5394 | struct nfs4_secinfo_arg args = { | |
5395 | .dir_fh = NFS_FH(dir), | |
5396 | .name = name, | |
5397 | }; | |
5398 | struct nfs4_secinfo_res res = { | |
5399 | .flavors = flavors, | |
5400 | }; | |
5401 | struct rpc_message msg = { | |
5402 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
5403 | .rpc_argp = &args, | |
5404 | .rpc_resp = &res, | |
5405 | }; | |
5406 | ||
5407 | dprintk("NFS call secinfo %s\n", name->name); | |
5408 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
5409 | dprintk("NFS reply secinfo: %d\n", status); | |
5410 | return status; | |
5411 | } | |
5412 | ||
72de53ec BS |
5413 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
5414 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
5415 | { |
5416 | struct nfs4_exception exception = { }; | |
5417 | int err; | |
5418 | do { | |
5419 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
5420 | _nfs4_proc_secinfo(dir, name, flavors), | |
5421 | &exception); | |
5422 | } while (exception.retry); | |
5423 | return err; | |
5424 | } | |
5425 | ||
557134a3 | 5426 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
5427 | /* |
5428 | * Check the exchange flags returned by the server for invalid flags, having | |
5429 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
5430 | * DS flags set. | |
5431 | */ | |
5432 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
5433 | { | |
5434 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
5435 | goto out_inval; | |
5436 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
5437 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
5438 | goto out_inval; | |
5439 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
5440 | goto out_inval; | |
5441 | return NFS_OK; | |
5442 | out_inval: | |
5443 | return -NFS4ERR_INVAL; | |
5444 | } | |
5445 | ||
78fe0f41 | 5446 | static bool |
79d4e1f0 CL |
5447 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
5448 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
5449 | { |
5450 | if (a->server_scope_sz == b->server_scope_sz && | |
5451 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
5452 | return true; | |
5453 | ||
5454 | return false; | |
5455 | } | |
5456 | ||
7c44f1ae WAA |
5457 | /* |
5458 | * nfs4_proc_bind_conn_to_session() | |
5459 | * | |
5460 | * The 4.1 client currently uses the same TCP connection for the | |
5461 | * fore and backchannel. | |
5462 | */ | |
2cf047c9 | 5463 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) |
7c44f1ae WAA |
5464 | { |
5465 | int status; | |
5466 | struct nfs41_bind_conn_to_session_res res; | |
5467 | struct rpc_message msg = { | |
5468 | .rpc_proc = | |
5469 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
5470 | .rpc_argp = clp, | |
5471 | .rpc_resp = &res, | |
2cf047c9 | 5472 | .rpc_cred = cred, |
7c44f1ae WAA |
5473 | }; |
5474 | ||
5475 | dprintk("--> %s\n", __func__); | |
7c44f1ae WAA |
5476 | |
5477 | res.session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); | |
5478 | if (unlikely(res.session == NULL)) { | |
5479 | status = -ENOMEM; | |
5480 | goto out; | |
5481 | } | |
5482 | ||
5483 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5484 | if (status == 0) { | |
5485 | if (memcmp(res.session->sess_id.data, | |
5486 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { | |
5487 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
5488 | status = -EIO; | |
5489 | goto out_session; | |
5490 | } | |
5491 | if (res.dir != NFS4_CDFS4_BOTH) { | |
5492 | dprintk("NFS: %s: Unexpected direction from server\n", | |
5493 | __func__); | |
5494 | status = -EIO; | |
5495 | goto out_session; | |
5496 | } | |
5497 | if (res.use_conn_in_rdma_mode) { | |
5498 | dprintk("NFS: %s: Server returned RDMA mode = true\n", | |
5499 | __func__); | |
5500 | status = -EIO; | |
5501 | goto out_session; | |
5502 | } | |
5503 | } | |
5504 | out_session: | |
5505 | kfree(res.session); | |
5506 | out: | |
5507 | dprintk("<-- %s status= %d\n", __func__, status); | |
5508 | return status; | |
5509 | } | |
5510 | ||
99fe60d0 BH |
5511 | /* |
5512 | * nfs4_proc_exchange_id() | |
5513 | * | |
6bbb4ae8 CL |
5514 | * Returns zero, a negative errno, or a negative NFS4ERR status code. |
5515 | * | |
99fe60d0 BH |
5516 | * Since the clientid has expired, all compounds using sessions |
5517 | * associated with the stale clientid will be returning | |
5518 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
5519 | * be in some phase of session reset. | |
5520 | */ | |
4d643d1d | 5521 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
5522 | { |
5523 | nfs4_verifier verifier; | |
5524 | struct nfs41_exchange_id_args args = { | |
cd93710e | 5525 | .verifier = &verifier, |
99fe60d0 | 5526 | .client = clp, |
357f54d6 | 5527 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
5528 | }; |
5529 | struct nfs41_exchange_id_res res = { | |
32b01310 | 5530 | 0 |
99fe60d0 BH |
5531 | }; |
5532 | int status; | |
5533 | struct rpc_message msg = { | |
5534 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
5535 | .rpc_argp = &args, | |
5536 | .rpc_resp = &res, | |
5537 | .rpc_cred = cred, | |
5538 | }; | |
99fe60d0 | 5539 | |
f092075d | 5540 | nfs4_init_boot_verifier(clp, &verifier); |
e984a55a CL |
5541 | args.id_len = nfs4_init_uniform_client_string(clp, args.id, |
5542 | sizeof(args.id)); | |
6bbb4ae8 CL |
5543 | dprintk("NFS call exchange_id auth=%s, '%.*s'\n", |
5544 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
5545 | args.id_len, args.id); | |
99fe60d0 | 5546 | |
acdeb69d | 5547 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 5548 | GFP_NOFS); |
acdeb69d | 5549 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
5550 | status = -ENOMEM; |
5551 | goto out; | |
5552 | } | |
78fe0f41 | 5553 | |
79d4e1f0 | 5554 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 5555 | GFP_NOFS); |
177313f1 | 5556 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 5557 | status = -ENOMEM; |
acdeb69d | 5558 | goto out_server_owner; |
abe9a6d5 | 5559 | } |
78fe0f41 | 5560 | |
bbafffd2 | 5561 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 5562 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
5563 | status = -ENOMEM; |
5564 | goto out_server_scope; | |
5565 | } | |
5566 | ||
1bd714f2 | 5567 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
177313f1 | 5568 | if (status == 0) |
32b01310 | 5569 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 5570 | |
acdeb69d | 5571 | if (status == 0) { |
32b01310 TM |
5572 | clp->cl_clientid = res.clientid; |
5573 | clp->cl_exchange_flags = (res.flags & ~EXCHGID4_FLAG_CONFIRMED_R); | |
5574 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) | |
5575 | clp->cl_seqid = res.seqid; | |
5576 | ||
acdeb69d CL |
5577 | kfree(clp->cl_serverowner); |
5578 | clp->cl_serverowner = res.server_owner; | |
5579 | res.server_owner = NULL; | |
78fe0f41 | 5580 | |
7d2ed9ac | 5581 | /* use the most recent implementation id */ |
59155546 CL |
5582 | kfree(clp->cl_implid); |
5583 | clp->cl_implid = res.impl_id; | |
7d2ed9ac | 5584 | |
177313f1 | 5585 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 5586 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
5587 | res.server_scope)) { |
5588 | dprintk("%s: server_scope mismatch detected\n", | |
5589 | __func__); | |
5590 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
5591 | kfree(clp->cl_serverscope); |
5592 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
5593 | } |
5594 | ||
177313f1 | 5595 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 5596 | clp->cl_serverscope = res.server_scope; |
abe9a6d5 WAA |
5597 | goto out; |
5598 | } | |
32b01310 TM |
5599 | } else |
5600 | kfree(res.impl_id); | |
7d2ed9ac | 5601 | |
acdeb69d CL |
5602 | out_server_owner: |
5603 | kfree(res.server_owner); | |
7d2ed9ac | 5604 | out_server_scope: |
abe9a6d5 WAA |
5605 | kfree(res.server_scope); |
5606 | out: | |
177313f1 | 5607 | if (clp->cl_implid != NULL) |
6bbb4ae8 | 5608 | dprintk("NFS reply exchange_id: Server Implementation ID: " |
7d2ed9ac | 5609 | "domain: %s, name: %s, date: %llu,%u\n", |
6bbb4ae8 | 5610 | clp->cl_implid->domain, clp->cl_implid->name, |
59155546 CL |
5611 | clp->cl_implid->date.seconds, |
5612 | clp->cl_implid->date.nseconds); | |
6bbb4ae8 | 5613 | dprintk("NFS reply exchange_id: %d\n", status); |
99fe60d0 BH |
5614 | return status; |
5615 | } | |
5616 | ||
66245539 TM |
5617 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
5618 | struct rpc_cred *cred) | |
5619 | { | |
5620 | struct rpc_message msg = { | |
5621 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
5622 | .rpc_argp = clp, | |
5623 | .rpc_cred = cred, | |
5624 | }; | |
5625 | int status; | |
5626 | ||
5627 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5628 | if (status) | |
02c67525 | 5629 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
5630 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
5631 | return status; | |
5632 | } | |
5633 | ||
5634 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
5635 | struct rpc_cred *cred) | |
5636 | { | |
5637 | unsigned int loop; | |
5638 | int ret; | |
5639 | ||
5640 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
5641 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
5642 | switch (ret) { | |
5643 | case -NFS4ERR_DELAY: | |
5644 | case -NFS4ERR_CLIENTID_BUSY: | |
5645 | ssleep(1); | |
5646 | break; | |
5647 | default: | |
5648 | return ret; | |
5649 | } | |
5650 | } | |
5651 | return 0; | |
5652 | } | |
5653 | ||
5654 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
5655 | { | |
5656 | struct rpc_cred *cred; | |
5657 | int ret = 0; | |
5658 | ||
5659 | if (clp->cl_mvops->minor_version < 1) | |
5660 | goto out; | |
5661 | if (clp->cl_exchange_flags == 0) | |
5662 | goto out; | |
05f4c350 CL |
5663 | if (clp->cl_preserve_clid) |
5664 | goto out; | |
66245539 TM |
5665 | cred = nfs4_get_exchange_id_cred(clp); |
5666 | ret = nfs4_proc_destroy_clientid(clp, cred); | |
5667 | if (cred) | |
5668 | put_rpccred(cred); | |
5669 | switch (ret) { | |
5670 | case 0: | |
5671 | case -NFS4ERR_STALE_CLIENTID: | |
5672 | clp->cl_exchange_flags = 0; | |
5673 | } | |
5674 | out: | |
5675 | return ret; | |
5676 | } | |
5677 | ||
2050f0cc AA |
5678 | struct nfs4_get_lease_time_data { |
5679 | struct nfs4_get_lease_time_args *args; | |
5680 | struct nfs4_get_lease_time_res *res; | |
5681 | struct nfs_client *clp; | |
5682 | }; | |
5683 | ||
5684 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
5685 | void *calldata) | |
5686 | { | |
5687 | int ret; | |
5688 | struct nfs4_get_lease_time_data *data = | |
5689 | (struct nfs4_get_lease_time_data *)calldata; | |
5690 | ||
5691 | dprintk("--> %s\n", __func__); | |
689cf5c1 | 5692 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
2050f0cc AA |
5693 | /* just setup sequence, do not trigger session recovery |
5694 | since we're invoked within one */ | |
5695 | ret = nfs41_setup_sequence(data->clp->cl_session, | |
689cf5c1 | 5696 | &data->args->la_seq_args, |
9d12b216 | 5697 | &data->res->lr_seq_res, task); |
2050f0cc | 5698 | |
d3edcf96 TM |
5699 | if (ret != -EAGAIN) |
5700 | rpc_call_start(task); | |
2050f0cc AA |
5701 | dprintk("<-- %s\n", __func__); |
5702 | } | |
5703 | ||
5704 | /* | |
5705 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
5706 | * from sequence operation or clientid errors. | |
5707 | */ | |
5708 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
5709 | { | |
5710 | struct nfs4_get_lease_time_data *data = | |
5711 | (struct nfs4_get_lease_time_data *)calldata; | |
5712 | ||
5713 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5714 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
5715 | return; | |
2050f0cc AA |
5716 | switch (task->tk_status) { |
5717 | case -NFS4ERR_DELAY: | |
5718 | case -NFS4ERR_GRACE: | |
5719 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
5720 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
5721 | task->tk_status = 0; | |
a8a4ae3a AA |
5722 | /* fall through */ |
5723 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 5724 | rpc_restart_call_prepare(task); |
2050f0cc AA |
5725 | return; |
5726 | } | |
2050f0cc AA |
5727 | dprintk("<-- %s\n", __func__); |
5728 | } | |
5729 | ||
17280175 | 5730 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
5731 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
5732 | .rpc_call_done = nfs4_get_lease_time_done, | |
5733 | }; | |
5734 | ||
5735 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
5736 | { | |
5737 | struct rpc_task *task; | |
5738 | struct nfs4_get_lease_time_args args; | |
5739 | struct nfs4_get_lease_time_res res = { | |
5740 | .lr_fsinfo = fsinfo, | |
5741 | }; | |
5742 | struct nfs4_get_lease_time_data data = { | |
5743 | .args = &args, | |
5744 | .res = &res, | |
5745 | .clp = clp, | |
5746 | }; | |
5747 | struct rpc_message msg = { | |
5748 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
5749 | .rpc_argp = &args, | |
5750 | .rpc_resp = &res, | |
5751 | }; | |
5752 | struct rpc_task_setup task_setup = { | |
5753 | .rpc_client = clp->cl_rpcclient, | |
5754 | .rpc_message = &msg, | |
5755 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
5756 | .callback_data = &data, |
5757 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
5758 | }; |
5759 | int status; | |
5760 | ||
9d12b216 | 5761 | nfs41_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
2050f0cc AA |
5762 | dprintk("--> %s\n", __func__); |
5763 | task = rpc_run_task(&task_setup); | |
5764 | ||
5765 | if (IS_ERR(task)) | |
5766 | status = PTR_ERR(task); | |
5767 | else { | |
5768 | status = task->tk_status; | |
5769 | rpc_put_task(task); | |
5770 | } | |
5771 | dprintk("<-- %s return %d\n", __func__, status); | |
5772 | ||
5773 | return status; | |
5774 | } | |
5775 | ||
87dda67e TM |
5776 | static int nfs4_grow_slot_table(struct nfs4_slot_table *tbl, |
5777 | u32 max_reqs, u32 ivalue) | |
f86f36a6 | 5778 | { |
87dda67e TM |
5779 | if (max_reqs <= tbl->max_slots) |
5780 | return 0; | |
5781 | if (nfs4_find_or_create_slot(tbl, max_reqs - 1, ivalue, GFP_NOFS)) | |
5782 | return 0; | |
5783 | return -ENOMEM; | |
f86f36a6 TM |
5784 | } |
5785 | ||
87dda67e TM |
5786 | static void nfs4_reset_slot_table(struct nfs4_slot_table *tbl, |
5787 | u32 server_highest_slotid, | |
f86f36a6 TM |
5788 | u32 ivalue) |
5789 | { | |
87dda67e | 5790 | struct nfs4_slot **p; |
f86f36a6 | 5791 | |
87dda67e TM |
5792 | nfs4_shrink_slot_table(tbl, server_highest_slotid + 1); |
5793 | p = &tbl->slots; | |
5794 | while (*p) { | |
5795 | (*p)->seq_nr = ivalue; | |
5796 | p = &(*p)->next; | |
f86f36a6 | 5797 | } |
f9b1ef5f | 5798 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
87dda67e TM |
5799 | tbl->target_highest_slotid = server_highest_slotid; |
5800 | tbl->server_highest_slotid = server_highest_slotid; | |
5801 | tbl->max_slotid = server_highest_slotid; | |
f86f36a6 TM |
5802 | } |
5803 | ||
b73dafa7 | 5804 | /* |
f86f36a6 | 5805 | * (re)Initialise a slot table |
b73dafa7 | 5806 | */ |
87dda67e TM |
5807 | static int nfs4_realloc_slot_table(struct nfs4_slot_table *tbl, |
5808 | u32 max_reqs, u32 ivalue) | |
ac72b7b3 | 5809 | { |
87dda67e | 5810 | int ret; |
ac72b7b3 | 5811 | |
104aeba4 AA |
5812 | dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__, |
5813 | max_reqs, tbl->max_slots); | |
ac72b7b3 | 5814 | |
87dda67e TM |
5815 | if (max_reqs > NFS4_MAX_SLOT_TABLE) |
5816 | max_reqs = NFS4_MAX_SLOT_TABLE; | |
5817 | ||
5818 | ret = nfs4_grow_slot_table(tbl, max_reqs, ivalue); | |
5819 | if (ret) | |
5820 | goto out; | |
5821 | ||
5822 | spin_lock(&tbl->slot_tbl_lock); | |
5823 | nfs4_reset_slot_table(tbl, max_reqs - 1, ivalue); | |
5824 | spin_unlock(&tbl->slot_tbl_lock); | |
f86f36a6 | 5825 | |
ac72b7b3 AA |
5826 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, |
5827 | tbl, tbl->slots, tbl->max_slots); | |
5828 | out: | |
5829 | dprintk("<-- %s: return %d\n", __func__, ret); | |
5830 | return ret; | |
5831 | } | |
5832 | ||
f8625a6a RL |
5833 | /* Destroy the slot table */ |
5834 | static void nfs4_destroy_slot_tables(struct nfs4_session *session) | |
5835 | { | |
87dda67e TM |
5836 | nfs4_shrink_slot_table(&session->fc_slot_table, 0); |
5837 | nfs4_shrink_slot_table(&session->bc_slot_table, 0); | |
f8625a6a RL |
5838 | } |
5839 | ||
050047ce | 5840 | /* |
aacd5537 | 5841 | * Initialize or reset the forechannel and backchannel tables |
050047ce | 5842 | */ |
aacd5537 | 5843 | static int nfs4_setup_session_slot_tables(struct nfs4_session *ses) |
050047ce | 5844 | { |
f26468fb | 5845 | struct nfs4_slot_table *tbl; |
aacd5537 | 5846 | int status; |
050047ce | 5847 | |
aacd5537 AA |
5848 | dprintk("--> %s\n", __func__); |
5849 | /* Fore channel */ | |
5850 | tbl = &ses->fc_slot_table; | |
e3725ec0 | 5851 | tbl->session = ses; |
f86f36a6 TM |
5852 | status = nfs4_realloc_slot_table(tbl, ses->fc_attrs.max_reqs, 1); |
5853 | if (status) /* -ENOMEM */ | |
5854 | return status; | |
aacd5537 AA |
5855 | /* Back channel */ |
5856 | tbl = &ses->bc_slot_table; | |
e3725ec0 | 5857 | tbl->session = ses; |
f86f36a6 TM |
5858 | status = nfs4_realloc_slot_table(tbl, ses->bc_attrs.max_reqs, 0); |
5859 | if (status && tbl->slots == NULL) | |
5860 | /* Fore and back channel share a connection so get | |
5861 | * both slot tables or neither */ | |
5862 | nfs4_destroy_slot_tables(ses); | |
f8625a6a | 5863 | return status; |
557134a3 AA |
5864 | } |
5865 | ||
5866 | struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) | |
5867 | { | |
5868 | struct nfs4_session *session; | |
5869 | struct nfs4_slot_table *tbl; | |
5870 | ||
8535b2be | 5871 | session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); |
557134a3 AA |
5872 | if (!session) |
5873 | return NULL; | |
76db6d95 | 5874 | |
557134a3 | 5875 | tbl = &session->fc_slot_table; |
45d43c29 | 5876 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
557134a3 | 5877 | spin_lock_init(&tbl->slot_tbl_lock); |
689cf5c1 | 5878 | rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); |
42acd021 | 5879 | init_completion(&tbl->complete); |
f8625a6a RL |
5880 | |
5881 | tbl = &session->bc_slot_table; | |
45d43c29 | 5882 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
f8625a6a RL |
5883 | spin_lock_init(&tbl->slot_tbl_lock); |
5884 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); | |
42acd021 | 5885 | init_completion(&tbl->complete); |
f8625a6a | 5886 | |
1055d76d TM |
5887 | session->session_state = 1<<NFS4_SESSION_INITING; |
5888 | ||
557134a3 AA |
5889 | session->clp = clp; |
5890 | return session; | |
5891 | } | |
5892 | ||
5893 | void nfs4_destroy_session(struct nfs4_session *session) | |
5894 | { | |
2446ab60 | 5895 | struct rpc_xprt *xprt; |
848f5bda | 5896 | struct rpc_cred *cred; |
2446ab60 | 5897 | |
848f5bda TM |
5898 | cred = nfs4_get_exchange_id_cred(session->clp); |
5899 | nfs4_proc_destroy_session(session, cred); | |
5900 | if (cred) | |
5901 | put_rpccred(cred); | |
2446ab60 TM |
5902 | |
5903 | rcu_read_lock(); | |
5904 | xprt = rcu_dereference(session->clp->cl_rpcclient->cl_xprt); | |
5905 | rcu_read_unlock(); | |
5a0ffe54 | 5906 | dprintk("%s Destroy backchannel for xprt %p\n", |
2446ab60 TM |
5907 | __func__, xprt); |
5908 | xprt_destroy_backchannel(xprt, NFS41_BC_MIN_CALLBACKS); | |
f8625a6a | 5909 | nfs4_destroy_slot_tables(session); |
557134a3 AA |
5910 | kfree(session); |
5911 | } | |
5912 | ||
fc931582 AA |
5913 | /* |
5914 | * Initialize the values to be used by the client in CREATE_SESSION | |
5915 | * If nfs4_init_session set the fore channel request and response sizes, | |
5916 | * use them. | |
5917 | * | |
5918 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
5919 | * always set csa_cachethis to FALSE because the current implementation | |
5920 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
5921 | */ | |
5922 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
5923 | { | |
5924 | struct nfs4_session *session = args->client->cl_session; | |
ae72ae67 TM |
5925 | unsigned int mxrqst_sz = session->fc_target_max_rqst_sz, |
5926 | mxresp_sz = session->fc_target_max_resp_sz; | |
fc931582 AA |
5927 | |
5928 | if (mxrqst_sz == 0) | |
5929 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
5930 | if (mxresp_sz == 0) | |
5931 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
5932 | /* Fore channel attributes */ | |
fc931582 AA |
5933 | args->fc_attrs.max_rqst_sz = mxrqst_sz; |
5934 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 | 5935 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 5936 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
5937 | |
5938 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 5939 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
5940 | __func__, |
5941 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 5942 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
5943 | |
5944 | /* Back channel attributes */ | |
fc931582 AA |
5945 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
5946 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
5947 | args->bc_attrs.max_resp_sz_cached = 0; | |
5948 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5949 | args->bc_attrs.max_reqs = 1; | |
5950 | ||
5951 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5952 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5953 | __func__, | |
5954 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5955 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5956 | args->bc_attrs.max_reqs); | |
5957 | } | |
5958 | ||
43c2e885 | 5959 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5960 | { |
43c2e885 BF |
5961 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5962 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5963 | ||
43c2e885 BF |
5964 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
5965 | return -EINVAL; | |
5966 | /* | |
5967 | * Our requested max_ops is the minimum we need; we're not | |
5968 | * prepared to break up compounds into smaller pieces than that. | |
5969 | * So, no point even trying to continue if the server won't | |
5970 | * cooperate: | |
5971 | */ | |
5972 | if (rcvd->max_ops < sent->max_ops) | |
5973 | return -EINVAL; | |
5974 | if (rcvd->max_reqs == 0) | |
5975 | return -EINVAL; | |
b4b9a0c1 VG |
5976 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
5977 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 5978 | return 0; |
8d35301d AA |
5979 | } |
5980 | ||
43c2e885 BF |
5981 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5982 | { | |
5983 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5984 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5985 | |
43c2e885 BF |
5986 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5987 | return -EINVAL; | |
5988 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5989 | return -EINVAL; | |
5990 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5991 | return -EINVAL; | |
5992 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 5993 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 5994 | return -EINVAL; |
b4b9a0c1 | 5995 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
5996 | return -EINVAL; |
5997 | return 0; | |
5998 | } | |
8d35301d | 5999 | |
8d35301d AA |
6000 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
6001 | struct nfs4_session *session) | |
6002 | { | |
43c2e885 | 6003 | int ret; |
8d35301d | 6004 | |
43c2e885 BF |
6005 | ret = nfs4_verify_fore_channel_attrs(args, session); |
6006 | if (ret) | |
6007 | return ret; | |
6008 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
6009 | } |
6010 | ||
848f5bda TM |
6011 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
6012 | struct rpc_cred *cred) | |
fc931582 AA |
6013 | { |
6014 | struct nfs4_session *session = clp->cl_session; | |
6015 | struct nfs41_create_session_args args = { | |
6016 | .client = clp, | |
6017 | .cb_program = NFS4_CALLBACK, | |
6018 | }; | |
6019 | struct nfs41_create_session_res res = { | |
6020 | .client = clp, | |
6021 | }; | |
6022 | struct rpc_message msg = { | |
6023 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
6024 | .rpc_argp = &args, | |
6025 | .rpc_resp = &res, | |
848f5bda | 6026 | .rpc_cred = cred, |
fc931582 AA |
6027 | }; |
6028 | int status; | |
6029 | ||
6030 | nfs4_init_channel_attrs(&args); | |
0f91421e | 6031 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 6032 | |
1bd714f2 | 6033 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
fc931582 | 6034 | |
43095d39 | 6035 | if (!status) { |
8d35301d AA |
6036 | /* Verify the session's negotiated channel_attrs values */ |
6037 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
6038 | /* Increment the clientid slot sequence id */ |
6039 | clp->cl_seqid++; | |
6040 | } | |
6041 | ||
6042 | return status; | |
6043 | } | |
6044 | ||
6045 | /* | |
6046 | * Issues a CREATE_SESSION operation to the server. | |
6047 | * It is the responsibility of the caller to verify the session is | |
6048 | * expired before calling this routine. | |
6049 | */ | |
848f5bda | 6050 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
6051 | { |
6052 | int status; | |
6053 | unsigned *ptr; | |
fc931582 AA |
6054 | struct nfs4_session *session = clp->cl_session; |
6055 | ||
6056 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
6057 | ||
848f5bda | 6058 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
6059 | if (status) |
6060 | goto out; | |
6061 | ||
aacd5537 AA |
6062 | /* Init or reset the session slot tables */ |
6063 | status = nfs4_setup_session_slot_tables(session); | |
6064 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
6065 | if (status) |
6066 | goto out; | |
6067 | ||
6068 | ptr = (unsigned *)&session->sess_id.data[0]; | |
6069 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
6070 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
6071 | out: |
6072 | dprintk("<-- %s\n", __func__); | |
6073 | return status; | |
6074 | } | |
6075 | ||
0f3e66c6 AA |
6076 | /* |
6077 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
6078 | * The caller must serialize access to this routine. | |
6079 | */ | |
848f5bda TM |
6080 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
6081 | struct rpc_cred *cred) | |
0f3e66c6 | 6082 | { |
848f5bda TM |
6083 | struct rpc_message msg = { |
6084 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
6085 | .rpc_argp = session, | |
6086 | .rpc_cred = cred, | |
6087 | }; | |
0f3e66c6 | 6088 | int status = 0; |
0f3e66c6 AA |
6089 | |
6090 | dprintk("--> nfs4_proc_destroy_session\n"); | |
6091 | ||
6092 | /* session is still being setup */ | |
6093 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
6094 | return status; | |
6095 | ||
1bd714f2 | 6096 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
0f3e66c6 AA |
6097 | |
6098 | if (status) | |
08106ac7 | 6099 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
6100 | "Session has been destroyed regardless...\n", status); |
6101 | ||
6102 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
6103 | return status; | |
6104 | } | |
6105 | ||
7b38c368 TM |
6106 | /* |
6107 | * With sessions, the client is not marked ready until after a | |
6108 | * successful EXCHANGE_ID and CREATE_SESSION. | |
6109 | * | |
6110 | * Map errors cl_cons_state errors to EPROTONOSUPPORT to indicate | |
6111 | * other versions of NFS can be tried. | |
6112 | */ | |
6113 | static int nfs41_check_session_ready(struct nfs_client *clp) | |
6114 | { | |
6115 | int ret; | |
6116 | ||
6117 | if (clp->cl_cons_state == NFS_CS_SESSION_INITING) { | |
6118 | ret = nfs4_client_recover_expired_lease(clp); | |
6119 | if (ret) | |
6120 | return ret; | |
6121 | } | |
6122 | if (clp->cl_cons_state < NFS_CS_READY) | |
6123 | return -EPROTONOSUPPORT; | |
54ac471c | 6124 | smp_rmb(); |
7b38c368 TM |
6125 | return 0; |
6126 | } | |
6127 | ||
fccba804 TM |
6128 | int nfs4_init_session(struct nfs_server *server) |
6129 | { | |
6130 | struct nfs_client *clp = server->nfs_client; | |
2449ea2e | 6131 | struct nfs4_session *session; |
ae72ae67 TM |
6132 | unsigned int target_max_rqst_sz = NFS_MAX_FILE_IO_SIZE; |
6133 | unsigned int target_max_resp_sz = NFS_MAX_FILE_IO_SIZE; | |
fccba804 TM |
6134 | |
6135 | if (!nfs4_has_session(clp)) | |
6136 | return 0; | |
6137 | ||
ae72ae67 TM |
6138 | if (server->rsize != 0) |
6139 | target_max_resp_sz = server->rsize; | |
6140 | target_max_resp_sz += nfs41_maxread_overhead; | |
6141 | ||
6142 | if (server->wsize != 0) | |
6143 | target_max_rqst_sz = server->wsize; | |
6144 | target_max_rqst_sz += nfs41_maxwrite_overhead; | |
6145 | ||
1055d76d | 6146 | session = clp->cl_session; |
7b38c368 TM |
6147 | spin_lock(&clp->cl_lock); |
6148 | if (test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) { | |
ae72ae67 TM |
6149 | /* Initialise targets and channel attributes */ |
6150 | session->fc_target_max_rqst_sz = target_max_rqst_sz; | |
6151 | session->fc_attrs.max_rqst_sz = target_max_rqst_sz; | |
6152 | session->fc_target_max_resp_sz = target_max_resp_sz; | |
6153 | session->fc_attrs.max_resp_sz = target_max_resp_sz; | |
688a9024 TM |
6154 | } else { |
6155 | /* Just adjust the targets */ | |
6156 | if (target_max_rqst_sz > session->fc_target_max_rqst_sz) { | |
6157 | session->fc_target_max_rqst_sz = target_max_rqst_sz; | |
6158 | set_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state); | |
6159 | } | |
6160 | if (target_max_resp_sz > session->fc_target_max_resp_sz) { | |
6161 | session->fc_target_max_resp_sz = target_max_resp_sz; | |
6162 | set_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state); | |
6163 | } | |
7b38c368 TM |
6164 | } |
6165 | spin_unlock(&clp->cl_lock); | |
2449ea2e | 6166 | |
688a9024 TM |
6167 | if (test_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state)) |
6168 | nfs4_schedule_lease_recovery(clp); | |
6169 | ||
7b38c368 | 6170 | return nfs41_check_session_ready(clp); |
fccba804 TM |
6171 | } |
6172 | ||
7b38c368 | 6173 | int nfs4_init_ds_session(struct nfs_client *clp, unsigned long lease_time) |
d83217c1 AA |
6174 | { |
6175 | struct nfs4_session *session = clp->cl_session; | |
6176 | int ret; | |
6177 | ||
7b38c368 TM |
6178 | spin_lock(&clp->cl_lock); |
6179 | if (test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) { | |
6180 | /* | |
6181 | * Do not set NFS_CS_CHECK_LEASE_TIME instead set the | |
6182 | * DS lease to be equal to the MDS lease. | |
6183 | */ | |
6184 | clp->cl_lease_time = lease_time; | |
6185 | clp->cl_last_renewal = jiffies; | |
6186 | } | |
6187 | spin_unlock(&clp->cl_lock); | |
d83217c1 | 6188 | |
7b38c368 TM |
6189 | ret = nfs41_check_session_ready(clp); |
6190 | if (ret) | |
6191 | return ret; | |
6192 | /* Test for the DS role */ | |
6193 | if (!is_ds_client(clp)) | |
6194 | return -ENODEV; | |
6195 | return 0; | |
d83217c1 AA |
6196 | } |
6197 | EXPORT_SYMBOL_GPL(nfs4_init_ds_session); | |
6198 | ||
6199 | ||
fc01cea9 AA |
6200 | /* |
6201 | * Renew the cl_session lease. | |
6202 | */ | |
d5f8d3fe TM |
6203 | struct nfs4_sequence_data { |
6204 | struct nfs_client *clp; | |
6205 | struct nfs4_sequence_args args; | |
6206 | struct nfs4_sequence_res res; | |
6207 | }; | |
6208 | ||
dc96aef9 AB |
6209 | static void nfs41_sequence_release(void *data) |
6210 | { | |
d5f8d3fe TM |
6211 | struct nfs4_sequence_data *calldata = data; |
6212 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 6213 | |
7135840f AB |
6214 | if (atomic_read(&clp->cl_count) > 1) |
6215 | nfs4_schedule_state_renewal(clp); | |
6216 | nfs_put_client(clp); | |
d5f8d3fe | 6217 | kfree(calldata); |
dc96aef9 AB |
6218 | } |
6219 | ||
aa5190d0 TM |
6220 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
6221 | { | |
6222 | switch(task->tk_status) { | |
6223 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
6224 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
6225 | return -EAGAIN; | |
6226 | default: | |
0400a6b0 | 6227 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
6228 | } |
6229 | return 0; | |
6230 | } | |
6231 | ||
dc96aef9 | 6232 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 6233 | { |
d5f8d3fe TM |
6234 | struct nfs4_sequence_data *calldata = data; |
6235 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 6236 | |
14516c3a TM |
6237 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
6238 | return; | |
fc01cea9 AA |
6239 | |
6240 | if (task->tk_status < 0) { | |
6241 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
6242 | if (atomic_read(&clp->cl_count) == 1) |
6243 | goto out; | |
fc01cea9 | 6244 | |
aa5190d0 TM |
6245 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
6246 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
6247 | return; |
6248 | } | |
6249 | } | |
fc01cea9 | 6250 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 6251 | out: |
fc01cea9 AA |
6252 | dprintk("<-- %s\n", __func__); |
6253 | } | |
6254 | ||
6255 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
6256 | { | |
d5f8d3fe TM |
6257 | struct nfs4_sequence_data *calldata = data; |
6258 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
6259 | struct nfs4_sequence_args *args; |
6260 | struct nfs4_sequence_res *res; | |
6261 | ||
fc01cea9 AA |
6262 | args = task->tk_msg.rpc_argp; |
6263 | res = task->tk_msg.rpc_resp; | |
6264 | ||
9d12b216 | 6265 | if (nfs41_setup_sequence(clp->cl_session, args, res, task)) |
fc01cea9 AA |
6266 | return; |
6267 | rpc_call_start(task); | |
6268 | } | |
6269 | ||
6bdb5f21 BS |
6270 | static void nfs41_sequence_prepare_privileged(struct rpc_task *task, void *data) |
6271 | { | |
6272 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
6273 | nfs41_sequence_prepare(task, data); | |
6274 | } | |
6275 | ||
fc01cea9 AA |
6276 | static const struct rpc_call_ops nfs41_sequence_ops = { |
6277 | .rpc_call_done = nfs41_sequence_call_done, | |
6278 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 6279 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
6280 | }; |
6281 | ||
6bdb5f21 BS |
6282 | static const struct rpc_call_ops nfs41_sequence_privileged_ops = { |
6283 | .rpc_call_done = nfs41_sequence_call_done, | |
6284 | .rpc_call_prepare = nfs41_sequence_prepare_privileged, | |
6285 | .rpc_release = nfs41_sequence_release, | |
6286 | }; | |
6287 | ||
6288 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred, | |
6289 | const struct rpc_call_ops *seq_ops) | |
fc01cea9 | 6290 | { |
d5f8d3fe | 6291 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
6292 | struct rpc_message msg = { |
6293 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
6294 | .rpc_cred = cred, | |
6295 | }; | |
71ac6da9 TM |
6296 | struct rpc_task_setup task_setup_data = { |
6297 | .rpc_client = clp->cl_rpcclient, | |
6298 | .rpc_message = &msg, | |
6bdb5f21 | 6299 | .callback_ops = seq_ops, |
71ac6da9 TM |
6300 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, |
6301 | }; | |
fc01cea9 | 6302 | |
7135840f | 6303 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 6304 | return ERR_PTR(-EIO); |
dfb4f309 | 6305 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 6306 | if (calldata == NULL) { |
7135840f | 6307 | nfs_put_client(clp); |
71ac6da9 | 6308 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 6309 | } |
9d12b216 | 6310 | nfs41_init_sequence(&calldata->args, &calldata->res, 0); |
d5f8d3fe TM |
6311 | msg.rpc_argp = &calldata->args; |
6312 | msg.rpc_resp = &calldata->res; | |
6313 | calldata->clp = clp; | |
71ac6da9 | 6314 | task_setup_data.callback_data = calldata; |
fc01cea9 | 6315 | |
71ac6da9 TM |
6316 | return rpc_run_task(&task_setup_data); |
6317 | } | |
6318 | ||
2f60ea6b | 6319 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
6320 | { |
6321 | struct rpc_task *task; | |
6322 | int ret = 0; | |
6323 | ||
2f60ea6b TM |
6324 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
6325 | return 0; | |
6bdb5f21 | 6326 | task = _nfs41_proc_sequence(clp, cred, &nfs41_sequence_ops); |
71ac6da9 TM |
6327 | if (IS_ERR(task)) |
6328 | ret = PTR_ERR(task); | |
6329 | else | |
bf294b41 | 6330 | rpc_put_task_async(task); |
71ac6da9 TM |
6331 | dprintk("<-- %s status=%d\n", __func__, ret); |
6332 | return ret; | |
6333 | } | |
6334 | ||
6335 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
6336 | { | |
6337 | struct rpc_task *task; | |
6338 | int ret; | |
6339 | ||
6bdb5f21 | 6340 | task = _nfs41_proc_sequence(clp, cred, &nfs41_sequence_privileged_ops); |
71ac6da9 TM |
6341 | if (IS_ERR(task)) { |
6342 | ret = PTR_ERR(task); | |
6343 | goto out; | |
6344 | } | |
6345 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
6346 | if (!ret) { |
6347 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
6348 | ||
6349 | if (task->tk_status == 0) | |
6350 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 6351 | ret = task->tk_status; |
b4410c2f | 6352 | } |
71ac6da9 TM |
6353 | rpc_put_task(task); |
6354 | out: | |
6355 | dprintk("<-- %s status=%d\n", __func__, ret); | |
6356 | return ret; | |
fc01cea9 AA |
6357 | } |
6358 | ||
fce5c838 RL |
6359 | struct nfs4_reclaim_complete_data { |
6360 | struct nfs_client *clp; | |
6361 | struct nfs41_reclaim_complete_args arg; | |
6362 | struct nfs41_reclaim_complete_res res; | |
6363 | }; | |
6364 | ||
6365 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
6366 | { | |
6367 | struct nfs4_reclaim_complete_data *calldata = data; | |
6368 | ||
b257957e | 6369 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
035168ab TM |
6370 | if (nfs41_setup_sequence(calldata->clp->cl_session, |
6371 | &calldata->arg.seq_args, | |
9d12b216 | 6372 | &calldata->res.seq_res, task)) |
fce5c838 RL |
6373 | return; |
6374 | ||
6375 | rpc_call_start(task); | |
6376 | } | |
6377 | ||
aa5190d0 TM |
6378 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
6379 | { | |
6380 | switch(task->tk_status) { | |
6381 | case 0: | |
6382 | case -NFS4ERR_COMPLETE_ALREADY: | |
6383 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
6384 | break; | |
6385 | case -NFS4ERR_DELAY: | |
aa5190d0 | 6386 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
6387 | /* fall through */ |
6388 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
6389 | return -EAGAIN; |
6390 | default: | |
0400a6b0 | 6391 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
6392 | } |
6393 | return 0; | |
6394 | } | |
6395 | ||
fce5c838 RL |
6396 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
6397 | { | |
6398 | struct nfs4_reclaim_complete_data *calldata = data; | |
6399 | struct nfs_client *clp = calldata->clp; | |
6400 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
6401 | ||
6402 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
6403 | if (!nfs41_sequence_done(task, res)) |
6404 | return; | |
fce5c838 | 6405 | |
aa5190d0 TM |
6406 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
6407 | rpc_restart_call_prepare(task); | |
6408 | return; | |
6409 | } | |
fce5c838 RL |
6410 | dprintk("<-- %s\n", __func__); |
6411 | } | |
6412 | ||
6413 | static void nfs4_free_reclaim_complete_data(void *data) | |
6414 | { | |
6415 | struct nfs4_reclaim_complete_data *calldata = data; | |
6416 | ||
6417 | kfree(calldata); | |
6418 | } | |
6419 | ||
6420 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
6421 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
6422 | .rpc_call_done = nfs4_reclaim_complete_done, | |
6423 | .rpc_release = nfs4_free_reclaim_complete_data, | |
6424 | }; | |
6425 | ||
6426 | /* | |
6427 | * Issue a global reclaim complete. | |
6428 | */ | |
6429 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
6430 | { | |
6431 | struct nfs4_reclaim_complete_data *calldata; | |
6432 | struct rpc_task *task; | |
6433 | struct rpc_message msg = { | |
6434 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
6435 | }; | |
6436 | struct rpc_task_setup task_setup_data = { | |
6437 | .rpc_client = clp->cl_rpcclient, | |
6438 | .rpc_message = &msg, | |
6439 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
6440 | .flags = RPC_TASK_ASYNC, | |
6441 | }; | |
6442 | int status = -ENOMEM; | |
6443 | ||
6444 | dprintk("--> %s\n", __func__); | |
8535b2be | 6445 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
6446 | if (calldata == NULL) |
6447 | goto out; | |
6448 | calldata->clp = clp; | |
6449 | calldata->arg.one_fs = 0; | |
fce5c838 | 6450 | |
9d12b216 | 6451 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
fce5c838 RL |
6452 | msg.rpc_argp = &calldata->arg; |
6453 | msg.rpc_resp = &calldata->res; | |
6454 | task_setup_data.callback_data = calldata; | |
6455 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 6456 | if (IS_ERR(task)) { |
fce5c838 | 6457 | status = PTR_ERR(task); |
acf82b85 DC |
6458 | goto out; |
6459 | } | |
c34c32ea AA |
6460 | status = nfs4_wait_for_completion_rpc_task(task); |
6461 | if (status == 0) | |
6462 | status = task->tk_status; | |
fce5c838 | 6463 | rpc_put_task(task); |
acf82b85 | 6464 | return 0; |
fce5c838 RL |
6465 | out: |
6466 | dprintk("<-- %s status=%d\n", __func__, status); | |
6467 | return status; | |
6468 | } | |
b1f69b75 AA |
6469 | |
6470 | static void | |
6471 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
6472 | { | |
6473 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 6474 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
b1f69b75 AA |
6475 | |
6476 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
6477 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
6478 | * right now covering the LAYOUTGET we are about to send. | |
6479 | * However, that is not so catastrophic, and there seems | |
6480 | * to be no way to prevent it completely. | |
6481 | */ | |
b1f69b75 | 6482 | if (nfs4_setup_sequence(server, &lgp->args.seq_args, |
9d12b216 | 6483 | &lgp->res.seq_res, task)) |
b1f69b75 | 6484 | return; |
cf7d63f1 FI |
6485 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
6486 | NFS_I(lgp->args.inode)->layout, | |
6487 | lgp->args.ctx->state)) { | |
6488 | rpc_exit(task, NFS4_OK); | |
6489 | return; | |
6490 | } | |
b1f69b75 AA |
6491 | rpc_call_start(task); |
6492 | } | |
6493 | ||
6494 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
6495 | { | |
6496 | struct nfs4_layoutget *lgp = calldata; | |
ee314c2a TM |
6497 | struct inode *inode = lgp->args.inode; |
6498 | struct nfs_server *server = NFS_SERVER(inode); | |
6499 | struct pnfs_layout_hdr *lo; | |
6500 | struct nfs4_state *state = NULL; | |
b1f69b75 AA |
6501 | |
6502 | dprintk("--> %s\n", __func__); | |
6503 | ||
6504 | if (!nfs4_sequence_done(task, &lgp->res.seq_res)) | |
ee314c2a | 6505 | goto out; |
b1f69b75 AA |
6506 | |
6507 | switch (task->tk_status) { | |
6508 | case 0: | |
ee314c2a | 6509 | goto out; |
b1f69b75 AA |
6510 | case -NFS4ERR_LAYOUTTRYLATER: |
6511 | case -NFS4ERR_RECALLCONFLICT: | |
6512 | task->tk_status = -NFS4ERR_DELAY; | |
ee314c2a TM |
6513 | break; |
6514 | case -NFS4ERR_EXPIRED: | |
6515 | case -NFS4ERR_BAD_STATEID: | |
6516 | spin_lock(&inode->i_lock); | |
6517 | lo = NFS_I(inode)->layout; | |
6518 | if (!lo || list_empty(&lo->plh_segs)) { | |
6519 | spin_unlock(&inode->i_lock); | |
6520 | /* If the open stateid was bad, then recover it. */ | |
6521 | state = lgp->args.ctx->state; | |
6522 | } else { | |
6523 | LIST_HEAD(head); | |
6524 | ||
6525 | pnfs_mark_matching_lsegs_invalid(lo, &head, NULL); | |
6526 | spin_unlock(&inode->i_lock); | |
6527 | /* Mark the bad layout state as invalid, then | |
6528 | * retry using the open stateid. */ | |
6529 | pnfs_free_lseg_list(&head); | |
b1f69b75 AA |
6530 | } |
6531 | } | |
ee314c2a TM |
6532 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
6533 | rpc_restart_call_prepare(task); | |
6534 | out: | |
b1f69b75 AA |
6535 | dprintk("<-- %s\n", __func__); |
6536 | } | |
6537 | ||
8554116e IK |
6538 | static size_t max_response_pages(struct nfs_server *server) |
6539 | { | |
6540 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
6541 | return nfs_page_array_len(0, max_resp_sz); | |
6542 | } | |
6543 | ||
6544 | static void nfs4_free_pages(struct page **pages, size_t size) | |
6545 | { | |
6546 | int i; | |
6547 | ||
6548 | if (!pages) | |
6549 | return; | |
6550 | ||
6551 | for (i = 0; i < size; i++) { | |
6552 | if (!pages[i]) | |
6553 | break; | |
6554 | __free_page(pages[i]); | |
6555 | } | |
6556 | kfree(pages); | |
6557 | } | |
6558 | ||
6559 | static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) | |
6560 | { | |
6561 | struct page **pages; | |
6562 | int i; | |
6563 | ||
6564 | pages = kcalloc(size, sizeof(struct page *), gfp_flags); | |
6565 | if (!pages) { | |
6566 | dprintk("%s: can't alloc array of %zu pages\n", __func__, size); | |
6567 | return NULL; | |
6568 | } | |
6569 | ||
6570 | for (i = 0; i < size; i++) { | |
6571 | pages[i] = alloc_page(gfp_flags); | |
6572 | if (!pages[i]) { | |
6573 | dprintk("%s: failed to allocate page\n", __func__); | |
6574 | nfs4_free_pages(pages, size); | |
6575 | return NULL; | |
6576 | } | |
6577 | } | |
6578 | ||
6579 | return pages; | |
6580 | } | |
6581 | ||
b1f69b75 AA |
6582 | static void nfs4_layoutget_release(void *calldata) |
6583 | { | |
6584 | struct nfs4_layoutget *lgp = calldata; | |
8554116e IK |
6585 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6586 | size_t max_pages = max_response_pages(server); | |
b1f69b75 AA |
6587 | |
6588 | dprintk("--> %s\n", __func__); | |
8554116e | 6589 | nfs4_free_pages(lgp->args.layout.pages, max_pages); |
b1f69b75 AA |
6590 | put_nfs_open_context(lgp->args.ctx); |
6591 | kfree(calldata); | |
6592 | dprintk("<-- %s\n", __func__); | |
6593 | } | |
6594 | ||
6595 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
6596 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
6597 | .rpc_call_done = nfs4_layoutget_done, | |
6598 | .rpc_release = nfs4_layoutget_release, | |
6599 | }; | |
6600 | ||
a0b0a6e3 TM |
6601 | struct pnfs_layout_segment * |
6602 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags) | |
b1f69b75 AA |
6603 | { |
6604 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
8554116e | 6605 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
6606 | struct rpc_task *task; |
6607 | struct rpc_message msg = { | |
6608 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
6609 | .rpc_argp = &lgp->args, | |
6610 | .rpc_resp = &lgp->res, | |
6611 | }; | |
6612 | struct rpc_task_setup task_setup_data = { | |
6613 | .rpc_client = server->client, | |
6614 | .rpc_message = &msg, | |
6615 | .callback_ops = &nfs4_layoutget_call_ops, | |
6616 | .callback_data = lgp, | |
6617 | .flags = RPC_TASK_ASYNC, | |
6618 | }; | |
a0b0a6e3 | 6619 | struct pnfs_layout_segment *lseg = NULL; |
b1f69b75 AA |
6620 | int status = 0; |
6621 | ||
6622 | dprintk("--> %s\n", __func__); | |
6623 | ||
8554116e IK |
6624 | lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); |
6625 | if (!lgp->args.layout.pages) { | |
6626 | nfs4_layoutget_release(lgp); | |
a0b0a6e3 | 6627 | return ERR_PTR(-ENOMEM); |
8554116e IK |
6628 | } |
6629 | lgp->args.layout.pglen = max_pages * PAGE_SIZE; | |
6630 | ||
35124a09 | 6631 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 6632 | lgp->res.seq_res.sr_slot = NULL; |
9d12b216 | 6633 | nfs41_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
b1f69b75 AA |
6634 | task = rpc_run_task(&task_setup_data); |
6635 | if (IS_ERR(task)) | |
a0b0a6e3 | 6636 | return ERR_CAST(task); |
b1f69b75 | 6637 | status = nfs4_wait_for_completion_rpc_task(task); |
c31663d4 FI |
6638 | if (status == 0) |
6639 | status = task->tk_status; | |
6640 | if (status == 0) | |
a0b0a6e3 | 6641 | lseg = pnfs_layout_process(lgp); |
b1f69b75 AA |
6642 | rpc_put_task(task); |
6643 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
6644 | if (status) |
6645 | return ERR_PTR(status); | |
6646 | return lseg; | |
b1f69b75 AA |
6647 | } |
6648 | ||
cbe82603 BH |
6649 | static void |
6650 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
6651 | { | |
6652 | struct nfs4_layoutreturn *lrp = calldata; | |
6653 | ||
6654 | dprintk("--> %s\n", __func__); | |
6655 | if (nfs41_setup_sequence(lrp->clp->cl_session, &lrp->args.seq_args, | |
9d12b216 | 6656 | &lrp->res.seq_res, task)) |
cbe82603 BH |
6657 | return; |
6658 | rpc_call_start(task); | |
6659 | } | |
6660 | ||
6661 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
6662 | { | |
6663 | struct nfs4_layoutreturn *lrp = calldata; | |
6664 | struct nfs_server *server; | |
6665 | ||
6666 | dprintk("--> %s\n", __func__); | |
6667 | ||
6668 | if (!nfs4_sequence_done(task, &lrp->res.seq_res)) | |
6669 | return; | |
6670 | ||
6671 | server = NFS_SERVER(lrp->args.inode); | |
6672 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 6673 | rpc_restart_call_prepare(task); |
cbe82603 BH |
6674 | return; |
6675 | } | |
cbe82603 BH |
6676 | dprintk("<-- %s\n", __func__); |
6677 | } | |
6678 | ||
6679 | static void nfs4_layoutreturn_release(void *calldata) | |
6680 | { | |
6681 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 6682 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
6683 | |
6684 | dprintk("--> %s\n", __func__); | |
849b286f TM |
6685 | spin_lock(&lo->plh_inode->i_lock); |
6686 | if (lrp->res.lrs_present) | |
6687 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); | |
6688 | lo->plh_block_lgets--; | |
6689 | spin_unlock(&lo->plh_inode->i_lock); | |
70c3bd2b | 6690 | pnfs_put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
6691 | kfree(calldata); |
6692 | dprintk("<-- %s\n", __func__); | |
6693 | } | |
6694 | ||
6695 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
6696 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
6697 | .rpc_call_done = nfs4_layoutreturn_done, | |
6698 | .rpc_release = nfs4_layoutreturn_release, | |
6699 | }; | |
6700 | ||
6701 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
6702 | { | |
6703 | struct rpc_task *task; | |
6704 | struct rpc_message msg = { | |
6705 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
6706 | .rpc_argp = &lrp->args, | |
6707 | .rpc_resp = &lrp->res, | |
6708 | }; | |
6709 | struct rpc_task_setup task_setup_data = { | |
6710 | .rpc_client = lrp->clp->cl_rpcclient, | |
6711 | .rpc_message = &msg, | |
6712 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
6713 | .callback_data = lrp, | |
6714 | }; | |
6715 | int status; | |
6716 | ||
6717 | dprintk("--> %s\n", __func__); | |
9d12b216 | 6718 | nfs41_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
6719 | task = rpc_run_task(&task_setup_data); |
6720 | if (IS_ERR(task)) | |
6721 | return PTR_ERR(task); | |
6722 | status = task->tk_status; | |
6723 | dprintk("<-- %s status=%d\n", __func__, status); | |
6724 | rpc_put_task(task); | |
6725 | return status; | |
6726 | } | |
6727 | ||
7f11d8d3 AA |
6728 | /* |
6729 | * Retrieve the list of Data Server devices from the MDS. | |
6730 | */ | |
6731 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
6732 | const struct nfs_fh *fh, | |
6733 | struct pnfs_devicelist *devlist) | |
6734 | { | |
6735 | struct nfs4_getdevicelist_args args = { | |
6736 | .fh = fh, | |
6737 | .layoutclass = server->pnfs_curr_ld->id, | |
6738 | }; | |
6739 | struct nfs4_getdevicelist_res res = { | |
6740 | .devlist = devlist, | |
6741 | }; | |
6742 | struct rpc_message msg = { | |
6743 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
6744 | .rpc_argp = &args, | |
6745 | .rpc_resp = &res, | |
6746 | }; | |
6747 | int status; | |
6748 | ||
6749 | dprintk("--> %s\n", __func__); | |
6750 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
6751 | &res.seq_res, 0); | |
6752 | dprintk("<-- %s status=%d\n", __func__, status); | |
6753 | return status; | |
6754 | } | |
6755 | ||
6756 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
6757 | const struct nfs_fh *fh, | |
6758 | struct pnfs_devicelist *devlist) | |
6759 | { | |
6760 | struct nfs4_exception exception = { }; | |
6761 | int err; | |
6762 | ||
6763 | do { | |
6764 | err = nfs4_handle_exception(server, | |
6765 | _nfs4_getdevicelist(server, fh, devlist), | |
6766 | &exception); | |
6767 | } while (exception.retry); | |
6768 | ||
6769 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
6770 | err, devlist->num_devs); | |
6771 | ||
6772 | return err; | |
6773 | } | |
6774 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
6775 | ||
b1f69b75 AA |
6776 | static int |
6777 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6778 | { | |
6779 | struct nfs4_getdeviceinfo_args args = { | |
6780 | .pdev = pdev, | |
6781 | }; | |
6782 | struct nfs4_getdeviceinfo_res res = { | |
6783 | .pdev = pdev, | |
6784 | }; | |
6785 | struct rpc_message msg = { | |
6786 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
6787 | .rpc_argp = &args, | |
6788 | .rpc_resp = &res, | |
6789 | }; | |
6790 | int status; | |
6791 | ||
6792 | dprintk("--> %s\n", __func__); | |
7c513058 | 6793 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
6794 | dprintk("<-- %s status=%d\n", __func__, status); |
6795 | ||
6796 | return status; | |
6797 | } | |
6798 | ||
6799 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6800 | { | |
6801 | struct nfs4_exception exception = { }; | |
6802 | int err; | |
6803 | ||
6804 | do { | |
6805 | err = nfs4_handle_exception(server, | |
6806 | _nfs4_proc_getdeviceinfo(server, pdev), | |
6807 | &exception); | |
6808 | } while (exception.retry); | |
6809 | return err; | |
6810 | } | |
6811 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
6812 | ||
863a3c6c AA |
6813 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
6814 | { | |
6815 | struct nfs4_layoutcommit_data *data = calldata; | |
6816 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6817 | ||
6818 | if (nfs4_setup_sequence(server, &data->args.seq_args, | |
9d12b216 | 6819 | &data->res.seq_res, task)) |
863a3c6c AA |
6820 | return; |
6821 | rpc_call_start(task); | |
6822 | } | |
6823 | ||
6824 | static void | |
6825 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
6826 | { | |
6827 | struct nfs4_layoutcommit_data *data = calldata; | |
6828 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6829 | ||
6830 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
6831 | return; | |
6832 | ||
6833 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
6834 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
6835 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
6836 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
6837 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 6838 | task->tk_status = 0; |
e59d27e0 TM |
6839 | break; |
6840 | case 0: | |
863a3c6c AA |
6841 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
6842 | data->res.fattr); | |
e59d27e0 TM |
6843 | break; |
6844 | default: | |
6845 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
6846 | rpc_restart_call_prepare(task); | |
6847 | return; | |
6848 | } | |
6849 | } | |
863a3c6c AA |
6850 | } |
6851 | ||
6852 | static void nfs4_layoutcommit_release(void *calldata) | |
6853 | { | |
6854 | struct nfs4_layoutcommit_data *data = calldata; | |
a9bae566 | 6855 | struct pnfs_layout_segment *lseg, *tmp; |
92407e75 | 6856 | unsigned long *bitlock = &NFS_I(data->args.inode)->flags; |
863a3c6c | 6857 | |
db29c089 | 6858 | pnfs_cleanup_layoutcommit(data); |
863a3c6c | 6859 | /* Matched by references in pnfs_set_layoutcommit */ |
a9bae566 PT |
6860 | list_for_each_entry_safe(lseg, tmp, &data->lseg_list, pls_lc_list) { |
6861 | list_del_init(&lseg->pls_lc_list); | |
6862 | if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT, | |
6863 | &lseg->pls_flags)) | |
9369a431 | 6864 | pnfs_put_lseg(lseg); |
a9bae566 | 6865 | } |
92407e75 PT |
6866 | |
6867 | clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING, bitlock); | |
6868 | smp_mb__after_clear_bit(); | |
6869 | wake_up_bit(bitlock, NFS_INO_LAYOUTCOMMITTING); | |
6870 | ||
863a3c6c AA |
6871 | put_rpccred(data->cred); |
6872 | kfree(data); | |
6873 | } | |
6874 | ||
6875 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
6876 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
6877 | .rpc_call_done = nfs4_layoutcommit_done, | |
6878 | .rpc_release = nfs4_layoutcommit_release, | |
6879 | }; | |
6880 | ||
6881 | int | |
ef311537 | 6882 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
6883 | { |
6884 | struct rpc_message msg = { | |
6885 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
6886 | .rpc_argp = &data->args, | |
6887 | .rpc_resp = &data->res, | |
6888 | .rpc_cred = data->cred, | |
6889 | }; | |
6890 | struct rpc_task_setup task_setup_data = { | |
6891 | .task = &data->task, | |
6892 | .rpc_client = NFS_CLIENT(data->args.inode), | |
6893 | .rpc_message = &msg, | |
6894 | .callback_ops = &nfs4_layoutcommit_ops, | |
6895 | .callback_data = data, | |
6896 | .flags = RPC_TASK_ASYNC, | |
6897 | }; | |
6898 | struct rpc_task *task; | |
6899 | int status = 0; | |
6900 | ||
6901 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
6902 | "lbw: %llu inode %lu\n", | |
6903 | data->task.tk_pid, sync, | |
6904 | data->args.lastbytewritten, | |
6905 | data->args.inode->i_ino); | |
6906 | ||
9d12b216 | 6907 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
6908 | task = rpc_run_task(&task_setup_data); |
6909 | if (IS_ERR(task)) | |
6910 | return PTR_ERR(task); | |
ef311537 | 6911 | if (sync == false) |
863a3c6c AA |
6912 | goto out; |
6913 | status = nfs4_wait_for_completion_rpc_task(task); | |
6914 | if (status != 0) | |
6915 | goto out; | |
6916 | status = task->tk_status; | |
6917 | out: | |
6918 | dprintk("%s: status %d\n", __func__, status); | |
6919 | rpc_put_task(task); | |
6920 | return status; | |
6921 | } | |
fca78d6d BS |
6922 | |
6923 | static int | |
6924 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6925 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6926 | { | |
6927 | struct nfs41_secinfo_no_name_args args = { | |
6928 | .style = SECINFO_STYLE_CURRENT_FH, | |
6929 | }; | |
6930 | struct nfs4_secinfo_res res = { | |
6931 | .flavors = flavors, | |
6932 | }; | |
6933 | struct rpc_message msg = { | |
6934 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
6935 | .rpc_argp = &args, | |
6936 | .rpc_resp = &res, | |
6937 | }; | |
6938 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); | |
6939 | } | |
6940 | ||
6941 | static int | |
6942 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6943 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6944 | { | |
6945 | struct nfs4_exception exception = { }; | |
6946 | int err; | |
6947 | do { | |
6948 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6949 | switch (err) { | |
6950 | case 0: | |
6951 | case -NFS4ERR_WRONGSEC: | |
6952 | case -NFS4ERR_NOTSUPP: | |
05e9cfb4 | 6953 | goto out; |
fca78d6d BS |
6954 | default: |
6955 | err = nfs4_handle_exception(server, err, &exception); | |
6956 | } | |
6957 | } while (exception.retry); | |
05e9cfb4 | 6958 | out: |
fca78d6d BS |
6959 | return err; |
6960 | } | |
6961 | ||
6962 | static int | |
6963 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
6964 | struct nfs_fsinfo *info) | |
6965 | { | |
6966 | int err; | |
6967 | struct page *page; | |
6968 | rpc_authflavor_t flavor; | |
6969 | struct nfs4_secinfo_flavors *flavors; | |
6970 | ||
6971 | page = alloc_page(GFP_KERNEL); | |
6972 | if (!page) { | |
6973 | err = -ENOMEM; | |
6974 | goto out; | |
6975 | } | |
6976 | ||
6977 | flavors = page_address(page); | |
6978 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6979 | ||
6980 | /* | |
6981 | * Fall back on "guess and check" method if | |
6982 | * the server doesn't support SECINFO_NO_NAME | |
6983 | */ | |
6984 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
6985 | err = nfs4_find_root_sec(server, fhandle, info); | |
6986 | goto out_freepage; | |
6987 | } | |
6988 | if (err) | |
6989 | goto out_freepage; | |
6990 | ||
6991 | flavor = nfs_find_best_sec(flavors); | |
6992 | if (err == 0) | |
6993 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
6994 | ||
6995 | out_freepage: | |
6996 | put_page(page); | |
6997 | if (err == -EACCES) | |
6998 | return -EPERM; | |
6999 | out: | |
7000 | return err; | |
7001 | } | |
1cab0652 BS |
7002 | |
7003 | static int _nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) | |
7d974794 BS |
7004 | { |
7005 | int status; | |
7006 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 7007 | .stateid = stateid, |
7d974794 BS |
7008 | }; |
7009 | struct nfs41_test_stateid_res res; | |
7010 | struct rpc_message msg = { | |
7011 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
7012 | .rpc_argp = &args, | |
7013 | .rpc_resp = &res, | |
7014 | }; | |
1cab0652 | 7015 | |
38527b15 | 7016 | dprintk("NFS call test_stateid %p\n", stateid); |
9d12b216 | 7017 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
1cab0652 | 7018 | status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
38527b15 CL |
7019 | if (status != NFS_OK) { |
7020 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 7021 | return status; |
38527b15 CL |
7022 | } |
7023 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 7024 | return -res.status; |
7d974794 BS |
7025 | } |
7026 | ||
38527b15 CL |
7027 | /** |
7028 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
7029 | * | |
7030 | * @server: server / transport on which to perform the operation | |
7031 | * @stateid: state ID to test | |
7032 | * | |
7033 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
7034 | * Otherwise a negative NFS4ERR value is returned if the operation | |
7035 | * failed or the state ID is not currently valid. | |
7036 | */ | |
1cab0652 | 7037 | static int nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
7d974794 BS |
7038 | { |
7039 | struct nfs4_exception exception = { }; | |
7040 | int err; | |
7041 | do { | |
377e507d CL |
7042 | err = _nfs41_test_stateid(server, stateid); |
7043 | if (err != -NFS4ERR_DELAY) | |
7044 | break; | |
7045 | nfs4_handle_exception(server, err, &exception); | |
7d974794 BS |
7046 | } while (exception.retry); |
7047 | return err; | |
7048 | } | |
9aeda35f | 7049 | |
1cab0652 | 7050 | static int _nfs4_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f | 7051 | { |
9aeda35f | 7052 | struct nfs41_free_stateid_args args = { |
1cab0652 | 7053 | .stateid = stateid, |
9aeda35f BS |
7054 | }; |
7055 | struct nfs41_free_stateid_res res; | |
7056 | struct rpc_message msg = { | |
7057 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
7058 | .rpc_argp = &args, | |
7059 | .rpc_resp = &res, | |
7060 | }; | |
38527b15 | 7061 | int status; |
9aeda35f | 7062 | |
38527b15 | 7063 | dprintk("NFS call free_stateid %p\n", stateid); |
9d12b216 | 7064 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
38527b15 | 7065 | status = nfs4_call_sync_sequence(server->client, server, &msg, |
377e507d | 7066 | &args.seq_args, &res.seq_res, 1); |
38527b15 CL |
7067 | dprintk("NFS reply free_stateid: %d\n", status); |
7068 | return status; | |
9aeda35f BS |
7069 | } |
7070 | ||
38527b15 CL |
7071 | /** |
7072 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
7073 | * | |
7074 | * @server: server / transport on which to perform the operation | |
7075 | * @stateid: state ID to release | |
7076 | * | |
7077 | * Returns NFS_OK if the server freed "stateid". Otherwise a | |
7078 | * negative NFS4ERR value is returned. | |
7079 | */ | |
1cab0652 | 7080 | static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f BS |
7081 | { |
7082 | struct nfs4_exception exception = { }; | |
7083 | int err; | |
7084 | do { | |
377e507d CL |
7085 | err = _nfs4_free_stateid(server, stateid); |
7086 | if (err != -NFS4ERR_DELAY) | |
7087 | break; | |
7088 | nfs4_handle_exception(server, err, &exception); | |
9aeda35f BS |
7089 | } while (exception.retry); |
7090 | return err; | |
7091 | } | |
36281caa TM |
7092 | |
7093 | static bool nfs41_match_stateid(const nfs4_stateid *s1, | |
7094 | const nfs4_stateid *s2) | |
7095 | { | |
2d2f24ad | 7096 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
7097 | return false; |
7098 | ||
2d2f24ad | 7099 | if (s1->seqid == s2->seqid) |
36281caa | 7100 | return true; |
2d2f24ad | 7101 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
7102 | return true; |
7103 | ||
7104 | return false; | |
7105 | } | |
7106 | ||
557134a3 AA |
7107 | #endif /* CONFIG_NFS_V4_1 */ |
7108 | ||
36281caa TM |
7109 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
7110 | const nfs4_stateid *s2) | |
7111 | { | |
f597c537 | 7112 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
7113 | } |
7114 | ||
7115 | ||
17280175 | 7116 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 7117 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 7118 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
7119 | .recover_open = nfs4_open_reclaim, |
7120 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 7121 | .establish_clid = nfs4_init_clientid, |
90a16617 | 7122 | .get_clid_cred = nfs4_get_setclientid_cred, |
05f4c350 | 7123 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
7124 | }; |
7125 | ||
591d71cb | 7126 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 7127 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
7128 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
7129 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
7130 | .recover_open = nfs4_open_reclaim, | |
7131 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 7132 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 7133 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 7134 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 7135 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
7136 | }; |
7137 | #endif /* CONFIG_NFS_V4_1 */ | |
7138 | ||
17280175 | 7139 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
7140 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
7141 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
7142 | .recover_open = nfs4_open_expired, | |
7143 | .recover_lock = nfs4_lock_expired, | |
7144 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 7145 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
7146 | }; |
7147 | ||
7148 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 7149 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 7150 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 7151 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
7152 | .recover_open = nfs41_open_expired, |
7153 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 7154 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 7155 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 7156 | }; |
591d71cb | 7157 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 7158 | |
17280175 | 7159 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 7160 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 7161 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 7162 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
7163 | }; |
7164 | ||
7165 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 7166 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 7167 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 7168 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 7169 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
7170 | }; |
7171 | #endif | |
7172 | ||
97dc1359 TM |
7173 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
7174 | .minor_version = 0, | |
7175 | .call_sync = _nfs4_call_sync, | |
36281caa | 7176 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 7177 | .find_root_sec = nfs4_find_root_sec, |
c48f4f35 TM |
7178 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
7179 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
7180 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
7181 | }; |
7182 | ||
7183 | #if defined(CONFIG_NFS_V4_1) | |
7184 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
7185 | .minor_version = 1, | |
7186 | .call_sync = _nfs4_call_sync_session, | |
36281caa | 7187 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 7188 | .find_root_sec = nfs41_find_root_sec, |
c48f4f35 TM |
7189 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
7190 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
7191 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
7192 | }; |
7193 | #endif | |
7194 | ||
97dc1359 TM |
7195 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
7196 | [0] = &nfs_v4_0_minor_ops, | |
7197 | #if defined(CONFIG_NFS_V4_1) | |
7198 | [1] = &nfs_v4_1_minor_ops, | |
7199 | #endif | |
7200 | }; | |
7201 | ||
73a79706 BS |
7202 | const struct inode_operations nfs4_dir_inode_operations = { |
7203 | .create = nfs_create, | |
7204 | .lookup = nfs_lookup, | |
7205 | .atomic_open = nfs_atomic_open, | |
7206 | .link = nfs_link, | |
7207 | .unlink = nfs_unlink, | |
7208 | .symlink = nfs_symlink, | |
7209 | .mkdir = nfs_mkdir, | |
7210 | .rmdir = nfs_rmdir, | |
7211 | .mknod = nfs_mknod, | |
7212 | .rename = nfs_rename, | |
7213 | .permission = nfs_permission, | |
7214 | .getattr = nfs_getattr, | |
7215 | .setattr = nfs_setattr, | |
7216 | .getxattr = generic_getxattr, | |
7217 | .setxattr = generic_setxattr, | |
7218 | .listxattr = generic_listxattr, | |
7219 | .removexattr = generic_removexattr, | |
7220 | }; | |
7221 | ||
92e1d5be | 7222 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
7223 | .permission = nfs_permission, |
7224 | .getattr = nfs_getattr, | |
7225 | .setattr = nfs_setattr, | |
64c2ce8b AK |
7226 | .getxattr = generic_getxattr, |
7227 | .setxattr = generic_setxattr, | |
7228 | .listxattr = generic_listxattr, | |
7229 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
7230 | }; |
7231 | ||
509de811 | 7232 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
7233 | .version = 4, /* protocol version */ |
7234 | .dentry_ops = &nfs4_dentry_operations, | |
7235 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 7236 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 7237 | .file_ops = &nfs4_file_operations, |
1da177e4 | 7238 | .getroot = nfs4_proc_get_root, |
281cad46 | 7239 | .submount = nfs4_submount, |
ff9099f2 | 7240 | .try_mount = nfs4_try_mount, |
1da177e4 LT |
7241 | .getattr = nfs4_proc_getattr, |
7242 | .setattr = nfs4_proc_setattr, | |
7243 | .lookup = nfs4_proc_lookup, | |
7244 | .access = nfs4_proc_access, | |
7245 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
7246 | .create = nfs4_proc_create, |
7247 | .remove = nfs4_proc_remove, | |
7248 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 7249 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 LT |
7250 | .unlink_done = nfs4_proc_unlink_done, |
7251 | .rename = nfs4_proc_rename, | |
d3d4152a | 7252 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 7253 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 7254 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
7255 | .link = nfs4_proc_link, |
7256 | .symlink = nfs4_proc_symlink, | |
7257 | .mkdir = nfs4_proc_mkdir, | |
7258 | .rmdir = nfs4_proc_remove, | |
7259 | .readdir = nfs4_proc_readdir, | |
7260 | .mknod = nfs4_proc_mknod, | |
7261 | .statfs = nfs4_proc_statfs, | |
7262 | .fsinfo = nfs4_proc_fsinfo, | |
7263 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 7264 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
7265 | .decode_dirent = nfs4_decode_dirent, |
7266 | .read_setup = nfs4_proc_read_setup, | |
1abb5088 | 7267 | .read_pageio_init = pnfs_pageio_init_read, |
ea7c3303 | 7268 | .read_rpc_prepare = nfs4_proc_read_rpc_prepare, |
ec06c096 | 7269 | .read_done = nfs4_read_done, |
1da177e4 | 7270 | .write_setup = nfs4_proc_write_setup, |
57208fa7 | 7271 | .write_pageio_init = pnfs_pageio_init_write, |
c6cb80d0 | 7272 | .write_rpc_prepare = nfs4_proc_write_rpc_prepare, |
788e7a89 | 7273 | .write_done = nfs4_write_done, |
1da177e4 | 7274 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 7275 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 7276 | .commit_done = nfs4_commit_done, |
1da177e4 | 7277 | .lock = nfs4_proc_lock, |
e50a1c2e | 7278 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 7279 | .close_context = nfs4_close_context, |
2b484297 | 7280 | .open_context = nfs4_atomic_open, |
011e2a7f | 7281 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 7282 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 7283 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 7284 | .init_client = nfs4_init_client, |
cdb7eced | 7285 | .free_client = nfs4_free_client, |
1179acc6 BS |
7286 | .create_server = nfs4_create_server, |
7287 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
7288 | }; |
7289 | ||
64c2ce8b AK |
7290 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
7291 | .prefix = XATTR_NAME_NFSV4_ACL, | |
7292 | .list = nfs4_xattr_list_nfs4_acl, | |
7293 | .get = nfs4_xattr_get_nfs4_acl, | |
7294 | .set = nfs4_xattr_set_nfs4_acl, | |
7295 | }; | |
7296 | ||
7297 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
7298 | &nfs4_xattr_nfs4_acl_handler, | |
7299 | NULL | |
7300 | }; | |
7301 | ||
1da177e4 LT |
7302 | /* |
7303 | * Local variables: | |
7304 | * c-basic-offset: 8 | |
7305 | * End: | |
7306 | */ |