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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 | ||
e2c4ab3c AA |
399 | /* |
400 | * nfs4_free_slot - free a slot and efficiently update slot table. | |
401 | * | |
402 | * freeing a slot is trivially done by clearing its respective bit | |
403 | * in the bitmap. | |
404 | * If the freed slotid equals highest_used_slotid we want to update it | |
405 | * so that the server would be able to size down the slot table if needed, | |
406 | * otherwise we know that the highest_used_slotid is still in use. | |
407 | * When updating highest_used_slotid there may be "holes" in the bitmap | |
408 | * so we need to scan down from highest_used_slotid to 0 looking for the now | |
409 | * highest slotid in use. | |
45d43c29 | 410 | * If none found, highest_used_slotid is set to NFS4_NO_SLOT. |
35dc1d74 TM |
411 | * |
412 | * Must be called while holding tbl->slot_tbl_lock | |
e2c4ab3c AA |
413 | */ |
414 | static void | |
f4af6e2a | 415 | nfs4_free_slot(struct nfs4_slot_table *tbl, struct nfs4_slot *slot) |
e2c4ab3c | 416 | { |
f4af6e2a TM |
417 | u32 slotid = slot->slot_nr; |
418 | ||
e2c4ab3c AA |
419 | /* clear used bit in bitmap */ |
420 | __clear_bit(slotid, tbl->used_slots); | |
421 | ||
422 | /* update highest_used_slotid when it is freed */ | |
423 | if (slotid == tbl->highest_used_slotid) { | |
f4af6e2a TM |
424 | u32 new_max = find_last_bit(tbl->used_slots, slotid); |
425 | if (new_max < slotid) | |
426 | tbl->highest_used_slotid = new_max; | |
e2c4ab3c | 427 | else |
45d43c29 | 428 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
e2c4ab3c | 429 | } |
45d43c29 TM |
430 | dprintk("%s: slotid %u highest_used_slotid %d\n", __func__, |
431 | slotid, tbl->highest_used_slotid); | |
e2c4ab3c AA |
432 | } |
433 | ||
961a828d TM |
434 | bool nfs4_set_task_privileged(struct rpc_task *task, void *dummy) |
435 | { | |
436 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
437 | return true; | |
e2c4ab3c AA |
438 | } |
439 | ||
3bfb0fc5 | 440 | /* |
42acd021 | 441 | * Signal state manager thread if session fore channel is drained |
3bfb0fc5 | 442 | */ |
42acd021 | 443 | static void nfs4_check_drain_fc_complete(struct nfs4_session *ses) |
3bfb0fc5 | 444 | { |
a2118c33 | 445 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state)) { |
961a828d TM |
446 | rpc_wake_up_first(&ses->fc_slot_table.slot_tbl_waitq, |
447 | nfs4_set_task_privileged, NULL); | |
3bfb0fc5 AB |
448 | return; |
449 | } | |
450 | ||
45d43c29 | 451 | if (ses->fc_slot_table.highest_used_slotid != NFS4_NO_SLOT) |
3bfb0fc5 AB |
452 | return; |
453 | ||
42acd021 AA |
454 | dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__); |
455 | complete(&ses->fc_slot_table.complete); | |
456 | } | |
457 | ||
458 | /* | |
459 | * Signal state manager thread if session back channel is drained | |
460 | */ | |
461 | void nfs4_check_drain_bc_complete(struct nfs4_session *ses) | |
462 | { | |
463 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state) || | |
45d43c29 | 464 | ses->bc_slot_table.highest_used_slotid != NFS4_NO_SLOT) |
42acd021 AA |
465 | return; |
466 | dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__); | |
467 | complete(&ses->bc_slot_table.complete); | |
3bfb0fc5 AB |
468 | } |
469 | ||
d185a334 | 470 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 | 471 | { |
e3725ec0 | 472 | struct nfs4_session *session; |
13615871 AA |
473 | struct nfs4_slot_table *tbl; |
474 | ||
dfb4f309 | 475 | if (!res->sr_slot) { |
13615871 AA |
476 | /* just wake up the next guy waiting since |
477 | * we may have not consumed a slot after all */ | |
691daf3b | 478 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 479 | return; |
13615871 | 480 | } |
e3725ec0 TM |
481 | tbl = res->sr_slot->table; |
482 | session = tbl->session; | |
ea028ac9 | 483 | |
35dc1d74 | 484 | spin_lock(&tbl->slot_tbl_lock); |
f4af6e2a | 485 | nfs4_free_slot(tbl, res->sr_slot); |
e3725ec0 | 486 | nfs4_check_drain_fc_complete(session); |
35dc1d74 | 487 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 488 | res->sr_slot = NULL; |
13615871 AA |
489 | } |
490 | ||
14516c3a | 491 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c | 492 | { |
e3725ec0 | 493 | struct nfs4_session *session; |
933602e3 | 494 | struct nfs4_slot *slot; |
b0df806c | 495 | unsigned long timestamp; |
14516c3a | 496 | struct nfs_client *clp; |
b0df806c AA |
497 | |
498 | /* | |
499 | * sr_status remains 1 if an RPC level error occurred. The server | |
500 | * may or may not have processed the sequence operation.. | |
501 | * Proceed as if the server received and processed the sequence | |
502 | * operation. | |
503 | */ | |
504 | if (res->sr_status == 1) | |
505 | res->sr_status = NFS_OK; | |
506 | ||
468f8613 BS |
507 | /* don't increment the sequence number if the task wasn't sent */ |
508 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
509 | goto out; |
510 | ||
933602e3 | 511 | slot = res->sr_slot; |
e3725ec0 | 512 | session = slot->table->session; |
933602e3 | 513 | |
691daf3b | 514 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
515 | switch (res->sr_status) { |
516 | case 0: | |
b0df806c | 517 | /* Update the slot's sequence and clientid lease timer */ |
933602e3 TM |
518 | ++slot->seq_nr; |
519 | timestamp = slot->renewal_time; | |
e3725ec0 | 520 | clp = session->clp; |
452e9352 | 521 | do_renew_lease(clp, timestamp); |
0629e370 | 522 | /* Check sequence flags */ |
b4410c2f TM |
523 | if (res->sr_status_flags != 0) |
524 | nfs4_schedule_lease_recovery(clp); | |
14516c3a TM |
525 | break; |
526 | case -NFS4ERR_DELAY: | |
527 | /* The server detected a resend of the RPC call and | |
528 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
529 | * of RFC5661. | |
530 | */ | |
df2fabff | 531 | dprintk("%s: slot=%u seq=%u: Operation in progress\n", |
dfb4f309 | 532 | __func__, |
df2fabff | 533 | slot->slot_nr, |
933602e3 | 534 | slot->seq_nr); |
14516c3a TM |
535 | goto out_retry; |
536 | default: | |
537 | /* Just update the slot sequence no. */ | |
933602e3 | 538 | ++slot->seq_nr; |
b0df806c AA |
539 | } |
540 | out: | |
541 | /* The session may be reset by one of the error handlers. */ | |
542 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 543 | nfs41_sequence_free_slot(res); |
14516c3a TM |
544 | return 1; |
545 | out_retry: | |
d05dd4e9 | 546 | if (!rpc_restart_call(task)) |
14516c3a TM |
547 | goto out; |
548 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
549 | return 0; | |
b0df806c AA |
550 | } |
551 | ||
14516c3a TM |
552 | static int nfs4_sequence_done(struct rpc_task *task, |
553 | struct nfs4_sequence_res *res) | |
df896455 | 554 | { |
e3725ec0 | 555 | if (res->sr_slot == NULL) |
14516c3a TM |
556 | return 1; |
557 | return nfs41_sequence_done(task, res); | |
df896455 TM |
558 | } |
559 | ||
510b8175 | 560 | /* |
2dc03b7f | 561 | * nfs4_alloc_slot - efficiently look for a free slot |
510b8175 | 562 | * |
2dc03b7f | 563 | * nfs4_alloc_slot looks for an unset bit in the used_slots bitmap. |
510b8175 BH |
564 | * If found, we mark the slot as used, update the highest_used_slotid, |
565 | * and respectively set up the sequence operation args. | |
fbcd4abc AA |
566 | * |
567 | * Note: must be called with under the slot_tbl_lock. | |
510b8175 | 568 | */ |
2dc03b7f | 569 | static struct nfs4_slot *nfs4_alloc_slot(struct nfs4_slot_table *tbl) |
510b8175 | 570 | { |
2dc03b7f | 571 | struct nfs4_slot *ret = NULL; |
45d43c29 | 572 | u32 slotid; |
510b8175 | 573 | |
45d43c29 | 574 | dprintk("--> %s used_slots=%04lx highest_used=%u max_slots=%u\n", |
510b8175 BH |
575 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, |
576 | tbl->max_slots); | |
577 | slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots); | |
578 | if (slotid >= tbl->max_slots) | |
579 | goto out; | |
580 | __set_bit(slotid, tbl->used_slots); | |
45d43c29 TM |
581 | if (slotid > tbl->highest_used_slotid || |
582 | tbl->highest_used_slotid == NFS4_NO_SLOT) | |
510b8175 | 583 | tbl->highest_used_slotid = slotid; |
2dc03b7f TM |
584 | ret = &tbl->slots[slotid]; |
585 | ret->renewal_time = jiffies; | |
586 | ||
510b8175 BH |
587 | out: |
588 | dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n", | |
2dc03b7f TM |
589 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, |
590 | ret ? ret->slot_nr : -1); | |
591 | return ret; | |
510b8175 BH |
592 | } |
593 | ||
9d12b216 TM |
594 | static void nfs41_init_sequence(struct nfs4_sequence_args *args, |
595 | struct nfs4_sequence_res *res, int cache_reply) | |
596 | { | |
2b2fa717 | 597 | args->sa_slot = NULL; |
9d12b216 TM |
598 | args->sa_cache_this = 0; |
599 | if (cache_reply) | |
600 | args->sa_cache_this = 1; | |
9d12b216 TM |
601 | res->sr_slot = NULL; |
602 | } | |
603 | ||
dc70d7b3 | 604 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
605 | struct nfs4_sequence_args *args, |
606 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
607 | struct rpc_task *task) |
608 | { | |
fbcd4abc AA |
609 | struct nfs4_slot *slot; |
610 | struct nfs4_slot_table *tbl; | |
fbcd4abc AA |
611 | |
612 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 613 | /* slot already allocated? */ |
dfb4f309 | 614 | if (res->sr_slot != NULL) |
ce5039c1 AA |
615 | return 0; |
616 | ||
fbcd4abc AA |
617 | tbl = &session->fc_slot_table; |
618 | ||
619 | spin_lock(&tbl->slot_tbl_lock); | |
a2118c33 | 620 | if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) && |
5601a00d | 621 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { |
0b1c8fc4 | 622 | /* The state manager will wait until the slot table is empty */ |
05f0d236 | 623 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
b069d94a | 624 | spin_unlock(&tbl->slot_tbl_lock); |
0b1c8fc4 | 625 | dprintk("%s session is draining\n", __func__); |
05f0d236 | 626 | return -EAGAIN; |
b069d94a AA |
627 | } |
628 | ||
689cf5c1 AB |
629 | if (!rpc_queue_empty(&tbl->slot_tbl_waitq) && |
630 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { | |
631 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
632 | spin_unlock(&tbl->slot_tbl_lock); | |
633 | dprintk("%s enforce FIFO order\n", __func__); | |
634 | return -EAGAIN; | |
635 | } | |
636 | ||
2dc03b7f TM |
637 | slot = nfs4_alloc_slot(tbl); |
638 | if (slot == NULL) { | |
fbcd4abc AA |
639 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
640 | spin_unlock(&tbl->slot_tbl_lock); | |
641 | dprintk("<-- %s: no free slots\n", __func__); | |
642 | return -EAGAIN; | |
643 | } | |
644 | spin_unlock(&tbl->slot_tbl_lock); | |
645 | ||
689cf5c1 | 646 | rpc_task_set_priority(task, RPC_PRIORITY_NORMAL); |
2b2fa717 TM |
647 | |
648 | args->sa_slot = slot; | |
fbcd4abc | 649 | |
2dc03b7f TM |
650 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, |
651 | slot->slot_nr, slot->seq_nr); | |
fbcd4abc | 652 | |
dfb4f309 | 653 | res->sr_slot = slot; |
2a6e26cd | 654 | res->sr_status_flags = 0; |
fbcd4abc AA |
655 | /* |
656 | * sr_status is only set in decode_sequence, and so will remain | |
657 | * set to 1 if an rpc level failure occurs. | |
658 | */ | |
659 | res->sr_status = 1; | |
ce5039c1 AA |
660 | return 0; |
661 | } | |
dc70d7b3 | 662 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 663 | |
035168ab | 664 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
665 | struct nfs4_sequence_args *args, |
666 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
667 | struct rpc_task *task) |
668 | { | |
035168ab | 669 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
670 | int ret = 0; |
671 | ||
9d12b216 | 672 | if (session == NULL) |
035168ab | 673 | goto out; |
035168ab | 674 | |
df2fabff | 675 | dprintk("--> %s clp %p session %p sr_slot %d\n", |
dfb4f309 | 676 | __func__, session->clp, session, res->sr_slot ? |
df2fabff | 677 | res->sr_slot->slot_nr : -1); |
ce5039c1 | 678 | |
9d12b216 | 679 | ret = nfs41_setup_sequence(session, args, res, task); |
ce5039c1 AA |
680 | out: |
681 | dprintk("<-- %s status=%d\n", __func__, ret); | |
682 | return ret; | |
683 | } | |
684 | ||
685 | struct nfs41_call_sync_data { | |
035168ab | 686 | const struct nfs_server *seq_server; |
ce5039c1 AA |
687 | struct nfs4_sequence_args *seq_args; |
688 | struct nfs4_sequence_res *seq_res; | |
ce5039c1 AA |
689 | }; |
690 | ||
691 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
692 | { | |
693 | struct nfs41_call_sync_data *data = calldata; | |
694 | ||
035168ab TM |
695 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
696 | ||
697 | if (nfs4_setup_sequence(data->seq_server, data->seq_args, | |
9d12b216 | 698 | data->seq_res, task)) |
ce5039c1 AA |
699 | return; |
700 | rpc_call_start(task); | |
701 | } | |
702 | ||
b257957e AB |
703 | static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata) |
704 | { | |
705 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
706 | nfs41_call_sync_prepare(task, calldata); | |
707 | } | |
708 | ||
69ab40c4 AA |
709 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
710 | { | |
711 | struct nfs41_call_sync_data *data = calldata; | |
712 | ||
14516c3a | 713 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
714 | } |
715 | ||
17280175 | 716 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 717 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 718 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
719 | }; |
720 | ||
17280175 | 721 | static const struct rpc_call_ops nfs41_call_priv_sync_ops = { |
b257957e AB |
722 | .rpc_call_prepare = nfs41_call_priv_sync_prepare, |
723 | .rpc_call_done = nfs41_call_sync_done, | |
724 | }; | |
725 | ||
7c513058 BS |
726 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
727 | struct nfs_server *server, | |
ce5039c1 AA |
728 | struct rpc_message *msg, |
729 | struct nfs4_sequence_args *args, | |
730 | struct nfs4_sequence_res *res, | |
b257957e | 731 | int privileged) |
ce5039c1 AA |
732 | { |
733 | int ret; | |
734 | struct rpc_task *task; | |
735 | struct nfs41_call_sync_data data = { | |
035168ab | 736 | .seq_server = server, |
ce5039c1 AA |
737 | .seq_args = args, |
738 | .seq_res = res, | |
ce5039c1 AA |
739 | }; |
740 | struct rpc_task_setup task_setup = { | |
7c513058 | 741 | .rpc_client = clnt, |
ce5039c1 AA |
742 | .rpc_message = msg, |
743 | .callback_ops = &nfs41_call_sync_ops, | |
744 | .callback_data = &data | |
745 | }; | |
746 | ||
b257957e AB |
747 | if (privileged) |
748 | task_setup.callback_ops = &nfs41_call_priv_sync_ops; | |
ce5039c1 AA |
749 | task = rpc_run_task(&task_setup); |
750 | if (IS_ERR(task)) | |
751 | ret = PTR_ERR(task); | |
752 | else { | |
753 | ret = task->tk_status; | |
754 | rpc_put_task(task); | |
755 | } | |
756 | return ret; | |
757 | } | |
758 | ||
7c513058 BS |
759 | int _nfs4_call_sync_session(struct rpc_clnt *clnt, |
760 | struct nfs_server *server, | |
cccef3b9 AA |
761 | struct rpc_message *msg, |
762 | struct nfs4_sequence_args *args, | |
763 | struct nfs4_sequence_res *res, | |
764 | int cache_reply) | |
765 | { | |
9d12b216 TM |
766 | nfs41_init_sequence(args, res, cache_reply); |
767 | return nfs4_call_sync_sequence(clnt, server, msg, args, res, 0); | |
cccef3b9 AA |
768 | } |
769 | ||
df896455 | 770 | #else |
9d12b216 TM |
771 | static inline |
772 | void nfs41_init_sequence(struct nfs4_sequence_args *args, | |
773 | struct nfs4_sequence_res *res, int cache_reply) | |
774 | { | |
775 | } | |
776 | ||
14516c3a TM |
777 | static int nfs4_sequence_done(struct rpc_task *task, |
778 | struct nfs4_sequence_res *res) | |
df896455 | 779 | { |
14516c3a | 780 | return 1; |
df896455 | 781 | } |
cccef3b9 AA |
782 | #endif /* CONFIG_NFS_V4_1 */ |
783 | ||
7c513058 BS |
784 | int _nfs4_call_sync(struct rpc_clnt *clnt, |
785 | struct nfs_server *server, | |
cccef3b9 AA |
786 | struct rpc_message *msg, |
787 | struct nfs4_sequence_args *args, | |
788 | struct nfs4_sequence_res *res, | |
789 | int cache_reply) | |
790 | { | |
9d12b216 | 791 | nfs41_init_sequence(args, res, cache_reply); |
7c513058 | 792 | return rpc_call_sync(clnt, msg, 0); |
cccef3b9 AA |
793 | } |
794 | ||
e73b83f2 | 795 | static inline |
7c513058 BS |
796 | int nfs4_call_sync(struct rpc_clnt *clnt, |
797 | struct nfs_server *server, | |
e73b83f2 BS |
798 | struct rpc_message *msg, |
799 | struct nfs4_sequence_args *args, | |
800 | struct nfs4_sequence_res *res, | |
801 | int cache_reply) | |
802 | { | |
7c513058 BS |
803 | return server->nfs_client->cl_mvops->call_sync(clnt, server, msg, |
804 | args, res, cache_reply); | |
e73b83f2 | 805 | } |
cccef3b9 | 806 | |
38478b24 | 807 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 808 | { |
38478b24 | 809 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 810 | |
38478b24 | 811 | spin_lock(&dir->i_lock); |
359d7d1c | 812 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; |
a9a4a87a | 813 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 814 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 815 | dir->i_version = cinfo->after; |
38478b24 | 816 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
817 | } |
818 | ||
e56e0b78 | 819 | struct nfs4_opendata { |
c6d00e63 | 820 | struct kref kref; |
e56e0b78 TM |
821 | struct nfs_openargs o_arg; |
822 | struct nfs_openres o_res; | |
cdd4e68b TM |
823 | struct nfs_open_confirmargs c_arg; |
824 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
825 | struct nfs4_string owner_name; |
826 | struct nfs4_string group_name; | |
e56e0b78 | 827 | struct nfs_fattr f_attr; |
e56e0b78 | 828 | struct dentry *dir; |
82a2c1b7 | 829 | struct dentry *dentry; |
e56e0b78 | 830 | struct nfs4_state_owner *owner; |
aac00a8d | 831 | struct nfs4_state *state; |
e56e0b78 | 832 | struct iattr attrs; |
26e976a8 | 833 | unsigned long timestamp; |
3e309914 | 834 | unsigned int rpc_done : 1; |
24ac23ab TM |
835 | int rpc_status; |
836 | int cancelled; | |
e56e0b78 TM |
837 | }; |
838 | ||
2ced46c2 TM |
839 | |
840 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
841 | { | |
842 | p->o_res.f_attr = &p->f_attr; | |
c1d51931 TM |
843 | p->o_res.seqid = p->o_arg.seqid; |
844 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 | 845 | p->o_res.server = p->o_arg.server; |
5f657530 | 846 | p->o_res.access_request = p->o_arg.access; |
2ced46c2 | 847 | nfs_fattr_init(&p->f_attr); |
6926afd1 | 848 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
849 | } |
850 | ||
82a2c1b7 | 851 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 852 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be TM |
853 | const struct iattr *attrs, |
854 | gfp_t gfp_mask) | |
e56e0b78 | 855 | { |
82a2c1b7 | 856 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
857 | struct inode *dir = parent->d_inode; |
858 | struct nfs_server *server = NFS_SERVER(dir); | |
859 | struct nfs4_opendata *p; | |
860 | ||
8535b2be | 861 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
862 | if (p == NULL) |
863 | goto err; | |
8535b2be | 864 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
865 | if (p->o_arg.seqid == NULL) |
866 | goto err_free; | |
82a2c1b7 AV |
867 | nfs_sb_active(dentry->d_sb); |
868 | p->dentry = dget(dentry); | |
e56e0b78 TM |
869 | p->dir = parent; |
870 | p->owner = sp; | |
871 | atomic_inc(&sp->so_count); | |
872 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
873 | p->o_arg.open_flags = flags; |
874 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
ae2bb032 WAA |
875 | /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS |
876 | * will return permission denied for all bits until close */ | |
877 | if (!(flags & O_EXCL)) { | |
878 | /* ask server to check for all possible rights as results | |
879 | * are cached */ | |
880 | p->o_arg.access = NFS4_ACCESS_READ | NFS4_ACCESS_MODIFY | | |
881 | NFS4_ACCESS_EXTEND | NFS4_ACCESS_EXECUTE; | |
ae2bb032 | 882 | } |
7539bbab | 883 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
884 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
885 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 886 | p->o_arg.name = &dentry->d_name; |
e56e0b78 TM |
887 | p->o_arg.server = server; |
888 | p->o_arg.bitmask = server->attr_bitmask; | |
1549210f | 889 | p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; |
e56e0b78 | 890 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; |
536e43d1 | 891 | if (attrs != NULL && attrs->ia_valid != 0) { |
cd93710e | 892 | __be32 verf[2]; |
d77d76ff | 893 | |
e56e0b78 TM |
894 | p->o_arg.u.attrs = &p->attrs; |
895 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
896 | |
897 | verf[0] = jiffies; | |
898 | verf[1] = current->pid; | |
899 | memcpy(p->o_arg.u.verifier.data, verf, | |
900 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 901 | } |
cdd4e68b TM |
902 | p->c_arg.fh = &p->o_res.fh; |
903 | p->c_arg.stateid = &p->o_res.stateid; | |
904 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 905 | nfs4_init_opendata_res(p); |
c6d00e63 | 906 | kref_init(&p->kref); |
e56e0b78 TM |
907 | return p; |
908 | err_free: | |
909 | kfree(p); | |
910 | err: | |
911 | dput(parent); | |
912 | return NULL; | |
913 | } | |
914 | ||
c6d00e63 | 915 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 916 | { |
c6d00e63 TM |
917 | struct nfs4_opendata *p = container_of(kref, |
918 | struct nfs4_opendata, kref); | |
82a2c1b7 | 919 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
920 | |
921 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
922 | if (p->state != NULL) |
923 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
924 | nfs4_put_state_owner(p->owner); |
925 | dput(p->dir); | |
82a2c1b7 AV |
926 | dput(p->dentry); |
927 | nfs_sb_deactive(sb); | |
6926afd1 | 928 | nfs_fattr_free_names(&p->f_attr); |
c6d00e63 TM |
929 | kfree(p); |
930 | } | |
931 | ||
932 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
933 | { | |
934 | if (p != NULL) | |
935 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
936 | } |
937 | ||
06f814a3 TM |
938 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
939 | { | |
06f814a3 TM |
940 | int ret; |
941 | ||
06f814a3 | 942 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
943 | return ret; |
944 | } | |
945 | ||
dc0b027d | 946 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
947 | { |
948 | int ret = 0; | |
dc0b027d | 949 | |
536e43d1 | 950 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
951 | goto out; |
952 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 953 | case FMODE_READ: |
88069f77 TM |
954 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
955 | && state->n_rdonly != 0; | |
6ee41268 TM |
956 | break; |
957 | case FMODE_WRITE: | |
88069f77 TM |
958 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
959 | && state->n_wronly != 0; | |
6ee41268 TM |
960 | break; |
961 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
962 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
963 | && state->n_rdwr != 0; | |
6ee41268 | 964 | } |
dc0b027d | 965 | out: |
6ee41268 TM |
966 | return ret; |
967 | } | |
968 | ||
dc0b027d | 969 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 970 | { |
652f89f6 TM |
971 | if (delegation == NULL) |
972 | return 0; | |
dc0b027d | 973 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 974 | return 0; |
15c831bf | 975 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 976 | return 0; |
b7391f44 | 977 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
978 | return 1; |
979 | } | |
980 | ||
dc0b027d | 981 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 982 | { |
dc0b027d | 983 | switch (fmode) { |
e7616923 TM |
984 | case FMODE_WRITE: |
985 | state->n_wronly++; | |
986 | break; | |
987 | case FMODE_READ: | |
988 | state->n_rdonly++; | |
989 | break; | |
990 | case FMODE_READ|FMODE_WRITE: | |
991 | state->n_rdwr++; | |
992 | } | |
dc0b027d | 993 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
994 | } |
995 | ||
dc0b027d | 996 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
997 | { |
998 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
f597c537 TM |
999 | nfs4_stateid_copy(&state->stateid, stateid); |
1000 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
dc0b027d | 1001 | switch (fmode) { |
003707c7 TM |
1002 | case FMODE_READ: |
1003 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1004 | break; | |
1005 | case FMODE_WRITE: | |
1006 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1007 | break; | |
1008 | case FMODE_READ|FMODE_WRITE: | |
1009 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
1010 | } | |
e7616923 TM |
1011 | } |
1012 | ||
dc0b027d | 1013 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 1014 | { |
8bda4e4c | 1015 | write_seqlock(&state->seqlock); |
dc0b027d | 1016 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 1017 | write_sequnlock(&state->seqlock); |
003707c7 TM |
1018 | } |
1019 | ||
dc0b027d | 1020 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 1021 | { |
8bda4e4c TM |
1022 | /* |
1023 | * Protect the call to nfs4_state_set_mode_locked and | |
1024 | * serialise the stateid update | |
1025 | */ | |
1026 | write_seqlock(&state->seqlock); | |
003707c7 | 1027 | if (deleg_stateid != NULL) { |
f597c537 | 1028 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
1029 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
1030 | } | |
1031 | if (open_stateid != NULL) | |
dc0b027d | 1032 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
1033 | write_sequnlock(&state->seqlock); |
1034 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 1035 | update_open_stateflags(state, fmode); |
ec073428 | 1036 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
1037 | } |
1038 | ||
dc0b027d | 1039 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
1040 | { |
1041 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1042 | struct nfs_delegation *deleg_cur; | |
1043 | int ret = 0; | |
1044 | ||
dc0b027d | 1045 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
1046 | |
1047 | rcu_read_lock(); | |
1048 | deleg_cur = rcu_dereference(nfsi->delegation); | |
1049 | if (deleg_cur == NULL) | |
1050 | goto no_delegation; | |
1051 | ||
1052 | spin_lock(&deleg_cur->lock); | |
1053 | if (nfsi->delegation != deleg_cur || | |
dc0b027d | 1054 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
1055 | goto no_delegation_unlock; |
1056 | ||
1057 | if (delegation == NULL) | |
1058 | delegation = &deleg_cur->stateid; | |
f597c537 | 1059 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
1060 | goto no_delegation_unlock; |
1061 | ||
b7391f44 | 1062 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 1063 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
1064 | ret = 1; |
1065 | no_delegation_unlock: | |
1066 | spin_unlock(&deleg_cur->lock); | |
1067 | no_delegation: | |
1068 | rcu_read_unlock(); | |
1069 | ||
1070 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1071 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1072 | ret = 1; |
1073 | } | |
1074 | ||
1075 | return ret; | |
1076 | } | |
1077 | ||
1078 | ||
dc0b027d | 1079 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1080 | { |
1081 | struct nfs_delegation *delegation; | |
1082 | ||
1083 | rcu_read_lock(); | |
1084 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1085 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1086 | rcu_read_unlock(); |
1087 | return; | |
1088 | } | |
1089 | rcu_read_unlock(); | |
57ec14c5 | 1090 | nfs4_inode_return_delegation(inode); |
aac00a8d TM |
1091 | } |
1092 | ||
6ee41268 | 1093 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1094 | { |
1095 | struct nfs4_state *state = opendata->state; | |
1096 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1097 | struct nfs_delegation *delegation; | |
536e43d1 | 1098 | int open_mode = opendata->o_arg.open_flags & (O_EXCL|O_TRUNC); |
dc0b027d | 1099 | fmode_t fmode = opendata->o_arg.fmode; |
aac00a8d TM |
1100 | nfs4_stateid stateid; |
1101 | int ret = -EAGAIN; | |
1102 | ||
aac00a8d | 1103 | for (;;) { |
dc0b027d | 1104 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1105 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1106 | if (can_open_cached(state, fmode, open_mode)) { |
1107 | update_open_stateflags(state, fmode); | |
6ee41268 | 1108 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1109 | goto out_return_state; |
1110 | } | |
1111 | spin_unlock(&state->owner->so_lock); | |
1112 | } | |
34310430 TM |
1113 | rcu_read_lock(); |
1114 | delegation = rcu_dereference(nfsi->delegation); | |
652f89f6 | 1115 | if (!can_open_delegated(delegation, fmode)) { |
34310430 | 1116 | rcu_read_unlock(); |
aac00a8d | 1117 | break; |
34310430 | 1118 | } |
aac00a8d | 1119 | /* Save the delegation */ |
f597c537 | 1120 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1121 | rcu_read_unlock(); |
af22f94a | 1122 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
1123 | if (ret != 0) |
1124 | goto out; | |
1125 | ret = -EAGAIN; | |
34310430 TM |
1126 | |
1127 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1128 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1129 | goto out_return_state; |
aac00a8d | 1130 | } |
aac00a8d TM |
1131 | out: |
1132 | return ERR_PTR(ret); | |
1133 | out_return_state: | |
1134 | atomic_inc(&state->count); | |
1135 | return state; | |
1136 | } | |
1137 | ||
e23008ec AA |
1138 | static void |
1139 | nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state) | |
1140 | { | |
1141 | struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client; | |
1142 | struct nfs_delegation *delegation; | |
1143 | int delegation_flags = 0; | |
1144 | ||
1145 | rcu_read_lock(); | |
1146 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
1147 | if (delegation) | |
1148 | delegation_flags = delegation->flags; | |
1149 | rcu_read_unlock(); | |
1150 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { | |
1151 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1152 | "returning a delegation for " | |
1153 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
1154 | clp->cl_hostname); | |
1155 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) | |
1156 | nfs_inode_set_delegation(state->inode, | |
1157 | data->owner->so_cred, | |
1158 | &data->o_res); | |
1159 | else | |
1160 | nfs_inode_reclaim_delegation(state->inode, | |
1161 | data->owner->so_cred, | |
1162 | &data->o_res); | |
1163 | } | |
1164 | ||
1165 | /* | |
1166 | * Check the inode attributes against the CLAIM_PREVIOUS returned attributes | |
1167 | * and update the nfs4_state. | |
1168 | */ | |
1169 | static struct nfs4_state * | |
1170 | _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data) | |
1171 | { | |
1172 | struct inode *inode = data->state->inode; | |
1173 | struct nfs4_state *state = data->state; | |
1174 | int ret; | |
1175 | ||
1176 | if (!data->rpc_done) { | |
1177 | ret = data->rpc_status; | |
1178 | goto err; | |
1179 | } | |
1180 | ||
1181 | ret = -ESTALE; | |
1182 | if (!(data->f_attr.valid & NFS_ATTR_FATTR_TYPE) || | |
1183 | !(data->f_attr.valid & NFS_ATTR_FATTR_FILEID) || | |
1184 | !(data->f_attr.valid & NFS_ATTR_FATTR_CHANGE)) | |
1185 | goto err; | |
1186 | ||
1187 | ret = -ENOMEM; | |
1188 | state = nfs4_get_open_state(inode, data->owner); | |
1189 | if (state == NULL) | |
1190 | goto err; | |
1191 | ||
1192 | ret = nfs_refresh_inode(inode, &data->f_attr); | |
1193 | if (ret) | |
1194 | goto err; | |
1195 | ||
1196 | if (data->o_res.delegation_type != 0) | |
1197 | nfs4_opendata_check_deleg(data, state); | |
1198 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
1199 | data->o_arg.fmode); | |
1200 | ||
1201 | return state; | |
1202 | err: | |
1203 | return ERR_PTR(ret); | |
1204 | ||
1205 | } | |
1206 | ||
1207 | static struct nfs4_state * | |
1208 | _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
24ac23ab TM |
1209 | { |
1210 | struct inode *inode; | |
1211 | struct nfs4_state *state = NULL; | |
1b370bc2 | 1212 | int ret; |
24ac23ab | 1213 | |
aac00a8d | 1214 | if (!data->rpc_done) { |
6ee41268 | 1215 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1216 | goto out; |
1217 | } | |
1218 | ||
1b370bc2 | 1219 | ret = -EAGAIN; |
24ac23ab | 1220 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1221 | goto err; |
24ac23ab | 1222 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 1223 | ret = PTR_ERR(inode); |
03f28e3a | 1224 | if (IS_ERR(inode)) |
1b370bc2 TM |
1225 | goto err; |
1226 | ret = -ENOMEM; | |
24ac23ab TM |
1227 | state = nfs4_get_open_state(inode, data->owner); |
1228 | if (state == NULL) | |
1b370bc2 | 1229 | goto err_put_inode; |
e23008ec AA |
1230 | if (data->o_res.delegation_type != 0) |
1231 | nfs4_opendata_check_deleg(data, state); | |
34310430 | 1232 | update_open_stateid(state, &data->o_res.stateid, NULL, |
dc0b027d | 1233 | data->o_arg.fmode); |
24ac23ab | 1234 | iput(inode); |
aac00a8d | 1235 | out: |
24ac23ab | 1236 | return state; |
1b370bc2 TM |
1237 | err_put_inode: |
1238 | iput(inode); | |
1239 | err: | |
1240 | return ERR_PTR(ret); | |
24ac23ab TM |
1241 | } |
1242 | ||
e23008ec AA |
1243 | static struct nfs4_state * |
1244 | nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
1245 | { | |
1246 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) | |
1247 | return _nfs4_opendata_reclaim_to_nfs4_state(data); | |
1248 | return _nfs4_opendata_to_nfs4_state(data); | |
1249 | } | |
1250 | ||
864472e9 TM |
1251 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1252 | { | |
1253 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1254 | struct nfs_open_context *ctx; | |
1255 | ||
1256 | spin_lock(&state->inode->i_lock); | |
1257 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1258 | if (ctx->state != state) | |
1259 | continue; | |
1260 | get_nfs_open_context(ctx); | |
1261 | spin_unlock(&state->inode->i_lock); | |
1262 | return ctx; | |
1263 | } | |
1264 | spin_unlock(&state->inode->i_lock); | |
1265 | return ERR_PTR(-ENOENT); | |
1266 | } | |
1267 | ||
6f220ed5 TM |
1268 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
1269 | { | |
1270 | struct nfs4_opendata *opendata; | |
1271 | ||
3d4ff43d | 1272 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, NULL, GFP_NOFS); |
6f220ed5 TM |
1273 | if (opendata == NULL) |
1274 | return ERR_PTR(-ENOMEM); | |
1275 | opendata->state = state; | |
1276 | atomic_inc(&state->count); | |
1277 | return opendata; | |
1278 | } | |
1279 | ||
dc0b027d | 1280 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1281 | { |
2ced46c2 | 1282 | struct nfs4_state *newstate; |
864472e9 TM |
1283 | int ret; |
1284 | ||
dc0b027d TM |
1285 | opendata->o_arg.open_flags = 0; |
1286 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1287 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1288 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1289 | nfs4_init_opendata_res(opendata); | |
b257957e | 1290 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1291 | if (ret != 0) |
1292 | return ret; | |
2ced46c2 | 1293 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1294 | if (IS_ERR(newstate)) |
1295 | return PTR_ERR(newstate); | |
643168c2 | 1296 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1297 | *res = newstate; |
864472e9 TM |
1298 | return 0; |
1299 | } | |
1300 | ||
1301 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1302 | { | |
864472e9 | 1303 | struct nfs4_state *newstate; |
864472e9 TM |
1304 | int ret; |
1305 | ||
1306 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1307 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1308 | smp_rmb(); |
1309 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1310 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1311 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1312 | if (ret != 0) |
1313 | return ret; | |
2ced46c2 TM |
1314 | if (newstate != state) |
1315 | return -ESTALE; | |
864472e9 TM |
1316 | } |
1317 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1318 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1319 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1320 | if (ret != 0) |
1321 | return ret; | |
2ced46c2 TM |
1322 | if (newstate != state) |
1323 | return -ESTALE; | |
864472e9 TM |
1324 | } |
1325 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1326 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1327 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1328 | if (ret != 0) |
1329 | return ret; | |
2ced46c2 TM |
1330 | if (newstate != state) |
1331 | return -ESTALE; | |
864472e9 | 1332 | } |
1ac7e2fd TM |
1333 | /* |
1334 | * We may have performed cached opens for all three recoveries. | |
1335 | * Check if we need to update the current stateid. | |
1336 | */ | |
1337 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1338 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1339 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1340 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1341 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1342 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1343 | } |
864472e9 TM |
1344 | return 0; |
1345 | } | |
1346 | ||
1da177e4 LT |
1347 | /* |
1348 | * OPEN_RECLAIM: | |
1349 | * reclaim state on the server after a reboot. | |
1da177e4 | 1350 | */ |
539cd03a | 1351 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1352 | { |
1ac7e2fd | 1353 | struct nfs_delegation *delegation; |
864472e9 | 1354 | struct nfs4_opendata *opendata; |
dc0b027d | 1355 | fmode_t delegation_type = 0; |
1da177e4 LT |
1356 | int status; |
1357 | ||
6f220ed5 TM |
1358 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1359 | if (IS_ERR(opendata)) | |
1360 | return PTR_ERR(opendata); | |
864472e9 TM |
1361 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1362 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1363 | rcu_read_lock(); |
1364 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1365 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1366 | delegation_type = delegation->type; |
1ac7e2fd | 1367 | rcu_read_unlock(); |
864472e9 TM |
1368 | opendata->o_arg.u.delegation_type = delegation_type; |
1369 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1370 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1371 | return status; |
1372 | } | |
1373 | ||
539cd03a | 1374 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1375 | { |
1376 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1377 | struct nfs4_exception exception = { }; | |
1378 | int err; | |
1379 | do { | |
539cd03a | 1380 | err = _nfs4_do_open_reclaim(ctx, state); |
168667c4 | 1381 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1382 | break; |
1383 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1384 | } while (exception.retry); |
1385 | return err; | |
1386 | } | |
1387 | ||
864472e9 TM |
1388 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1389 | { | |
1390 | struct nfs_open_context *ctx; | |
1391 | int ret; | |
1392 | ||
1393 | ctx = nfs4_state_find_open_context(state); | |
1394 | if (IS_ERR(ctx)) | |
1395 | return PTR_ERR(ctx); | |
539cd03a | 1396 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1397 | put_nfs_open_context(ctx); |
1398 | return ret; | |
1399 | } | |
1400 | ||
13437e12 | 1401 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1402 | { |
e56e0b78 | 1403 | struct nfs4_opendata *opendata; |
864472e9 | 1404 | int ret; |
1da177e4 | 1405 | |
6f220ed5 TM |
1406 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1407 | if (IS_ERR(opendata)) | |
1408 | return PTR_ERR(opendata); | |
e56e0b78 | 1409 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
f597c537 | 1410 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); |
864472e9 | 1411 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1412 | nfs4_opendata_put(opendata); |
864472e9 | 1413 | return ret; |
1da177e4 LT |
1414 | } |
1415 | ||
13437e12 | 1416 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1417 | { |
1418 | struct nfs4_exception exception = { }; | |
539cd03a | 1419 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1420 | int err; |
1421 | do { | |
13437e12 | 1422 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1423 | switch (err) { |
1424 | case 0: | |
965b5d67 TM |
1425 | case -ENOENT: |
1426 | case -ESTALE: | |
1427 | goto out; | |
bcfa49f6 RL |
1428 | case -NFS4ERR_BADSESSION: |
1429 | case -NFS4ERR_BADSLOT: | |
1430 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1431 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1432 | case -NFS4ERR_DEADSESSION: | |
9f594791 | 1433 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); |
bcfa49f6 | 1434 | goto out; |
1da177e4 LT |
1435 | case -NFS4ERR_STALE_CLIENTID: |
1436 | case -NFS4ERR_STALE_STATEID: | |
1437 | case -NFS4ERR_EXPIRED: | |
1438 | /* Don't recall a delegation if it was lost */ | |
0400a6b0 | 1439 | nfs4_schedule_lease_recovery(server->nfs_client); |
965b5d67 TM |
1440 | goto out; |
1441 | case -ERESTARTSYS: | |
1442 | /* | |
1443 | * The show must go on: exit, but mark the | |
1444 | * stateid as needing recovery. | |
1445 | */ | |
a1d0b5ee | 1446 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
1447 | case -NFS4ERR_ADMIN_REVOKED: |
1448 | case -NFS4ERR_BAD_STATEID: | |
a1d0b5ee TM |
1449 | nfs_inode_find_state_and_recover(state->inode, |
1450 | stateid); | |
0400a6b0 | 1451 | nfs4_schedule_stateid_recovery(server, state); |
168667c4 TM |
1452 | case -EKEYEXPIRED: |
1453 | /* | |
1454 | * User RPCSEC_GSS context has expired. | |
1455 | * We cannot recover this stateid now, so | |
1456 | * skip it and allow recovery thread to | |
1457 | * proceed. | |
1458 | */ | |
965b5d67 TM |
1459 | case -ENOMEM: |
1460 | err = 0; | |
1461 | goto out; | |
1da177e4 LT |
1462 | } |
1463 | err = nfs4_handle_exception(server, err, &exception); | |
1464 | } while (exception.retry); | |
965b5d67 | 1465 | out: |
1da177e4 LT |
1466 | return err; |
1467 | } | |
1468 | ||
cdd4e68b TM |
1469 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1470 | { | |
1471 | struct nfs4_opendata *data = calldata; | |
1472 | ||
1473 | data->rpc_status = task->tk_status; | |
26e976a8 | 1474 | if (data->rpc_status == 0) { |
f597c537 | 1475 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1476 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1477 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1478 | data->rpc_done = 1; |
26e976a8 | 1479 | } |
cdd4e68b TM |
1480 | } |
1481 | ||
1482 | static void nfs4_open_confirm_release(void *calldata) | |
1483 | { | |
1484 | struct nfs4_opendata *data = calldata; | |
1485 | struct nfs4_state *state = NULL; | |
1486 | ||
1487 | /* If this request hasn't been cancelled, do nothing */ | |
1488 | if (data->cancelled == 0) | |
1489 | goto out_free; | |
1490 | /* In case of error, no cleanup! */ | |
3e309914 | 1491 | if (!data->rpc_done) |
cdd4e68b | 1492 | goto out_free; |
cdd4e68b | 1493 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1494 | if (!IS_ERR(state)) |
643168c2 | 1495 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1496 | out_free: |
c6d00e63 | 1497 | nfs4_opendata_put(data); |
cdd4e68b TM |
1498 | } |
1499 | ||
1500 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1501 | .rpc_call_done = nfs4_open_confirm_done, |
1502 | .rpc_release = nfs4_open_confirm_release, | |
1503 | }; | |
1504 | ||
1505 | /* | |
1506 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1507 | */ | |
1508 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1509 | { | |
1510 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1511 | struct rpc_task *task; | |
5138fde0 TM |
1512 | struct rpc_message msg = { |
1513 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1514 | .rpc_argp = &data->c_arg, | |
1515 | .rpc_resp = &data->c_res, | |
1516 | .rpc_cred = data->owner->so_cred, | |
1517 | }; | |
c970aa85 TM |
1518 | struct rpc_task_setup task_setup_data = { |
1519 | .rpc_client = server->client, | |
5138fde0 | 1520 | .rpc_message = &msg, |
c970aa85 TM |
1521 | .callback_ops = &nfs4_open_confirm_ops, |
1522 | .callback_data = data, | |
101070ca | 1523 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1524 | .flags = RPC_TASK_ASYNC, |
1525 | }; | |
1da177e4 LT |
1526 | int status; |
1527 | ||
c6d00e63 | 1528 | kref_get(&data->kref); |
3e309914 TM |
1529 | data->rpc_done = 0; |
1530 | data->rpc_status = 0; | |
5138fde0 | 1531 | data->timestamp = jiffies; |
c970aa85 | 1532 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1533 | if (IS_ERR(task)) |
cdd4e68b | 1534 | return PTR_ERR(task); |
cdd4e68b TM |
1535 | status = nfs4_wait_for_completion_rpc_task(task); |
1536 | if (status != 0) { | |
1537 | data->cancelled = 1; | |
1538 | smp_wmb(); | |
1539 | } else | |
1540 | status = data->rpc_status; | |
e6b3c4db | 1541 | rpc_put_task(task); |
1da177e4 LT |
1542 | return status; |
1543 | } | |
1544 | ||
24ac23ab | 1545 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1546 | { |
24ac23ab TM |
1547 | struct nfs4_opendata *data = calldata; |
1548 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1549 | |
24ac23ab TM |
1550 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
1551 | return; | |
aac00a8d TM |
1552 | /* |
1553 | * Check if we still need to send an OPEN call, or if we can use | |
1554 | * a delegation instead. | |
1555 | */ | |
1556 | if (data->state != NULL) { | |
1557 | struct nfs_delegation *delegation; | |
1558 | ||
dc0b027d | 1559 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1560 | goto out_no_action; |
aac00a8d TM |
1561 | rcu_read_lock(); |
1562 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 TM |
1563 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
1564 | can_open_delegated(delegation, data->o_arg.fmode)) | |
1565 | goto unlock_no_action; | |
aac00a8d TM |
1566 | rcu_read_unlock(); |
1567 | } | |
95b72eb0 | 1568 | /* Update client id. */ |
1f0e890d | 1569 | data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; |
6f220ed5 | 1570 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1571 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
e23008ec | 1572 | data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0]; |
6f220ed5 TM |
1573 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1574 | } | |
26e976a8 | 1575 | data->timestamp = jiffies; |
035168ab | 1576 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1577 | &data->o_arg.seq_args, |
2240a9e2 TM |
1578 | &data->o_res.seq_res, |
1579 | task) != 0) | |
1580 | nfs_release_seqid(data->o_arg.seqid); | |
1581 | else | |
1582 | rpc_call_start(task); | |
6ee41268 | 1583 | return; |
652f89f6 TM |
1584 | unlock_no_action: |
1585 | rcu_read_unlock(); | |
6ee41268 TM |
1586 | out_no_action: |
1587 | task->tk_action = NULL; | |
1588 | ||
24ac23ab | 1589 | } |
1da177e4 | 1590 | |
b257957e AB |
1591 | static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata) |
1592 | { | |
1593 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
1594 | nfs4_open_prepare(task, calldata); | |
1595 | } | |
1596 | ||
24ac23ab TM |
1597 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1598 | { | |
1599 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1600 | |
24ac23ab | 1601 | data->rpc_status = task->tk_status; |
d898528c | 1602 | |
14516c3a TM |
1603 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1604 | return; | |
d898528c | 1605 | |
24ac23ab | 1606 | if (task->tk_status == 0) { |
807d66d8 TM |
1607 | if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) { |
1608 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1609 | case S_IFREG: |
1610 | break; | |
1611 | case S_IFLNK: | |
24ac23ab | 1612 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1613 | break; |
1614 | case S_IFDIR: | |
24ac23ab | 1615 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1616 | break; |
1617 | default: | |
24ac23ab | 1618 | data->rpc_status = -ENOTDIR; |
807d66d8 | 1619 | } |
6f926b5b | 1620 | } |
26e976a8 | 1621 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1622 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1623 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1624 | } |
3e309914 | 1625 | data->rpc_done = 1; |
24ac23ab | 1626 | } |
6f926b5b | 1627 | |
24ac23ab TM |
1628 | static void nfs4_open_release(void *calldata) |
1629 | { | |
1630 | struct nfs4_opendata *data = calldata; | |
1631 | struct nfs4_state *state = NULL; | |
1632 | ||
1633 | /* If this request hasn't been cancelled, do nothing */ | |
1634 | if (data->cancelled == 0) | |
1635 | goto out_free; | |
1636 | /* In case of error, no cleanup! */ | |
3e309914 | 1637 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1638 | goto out_free; |
1639 | /* In case we need an open_confirm, no cleanup! */ | |
1640 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1641 | goto out_free; | |
24ac23ab | 1642 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1643 | if (!IS_ERR(state)) |
643168c2 | 1644 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1645 | out_free: |
c6d00e63 | 1646 | nfs4_opendata_put(data); |
24ac23ab TM |
1647 | } |
1648 | ||
1649 | static const struct rpc_call_ops nfs4_open_ops = { | |
1650 | .rpc_call_prepare = nfs4_open_prepare, | |
1651 | .rpc_call_done = nfs4_open_done, | |
1652 | .rpc_release = nfs4_open_release, | |
1653 | }; | |
1654 | ||
b257957e AB |
1655 | static const struct rpc_call_ops nfs4_recover_open_ops = { |
1656 | .rpc_call_prepare = nfs4_recover_open_prepare, | |
1657 | .rpc_call_done = nfs4_open_done, | |
1658 | .rpc_release = nfs4_open_release, | |
1659 | }; | |
1660 | ||
1661 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) | |
24ac23ab TM |
1662 | { |
1663 | struct inode *dir = data->dir->d_inode; | |
1664 | struct nfs_server *server = NFS_SERVER(dir); | |
1665 | struct nfs_openargs *o_arg = &data->o_arg; | |
1666 | struct nfs_openres *o_res = &data->o_res; | |
1667 | struct rpc_task *task; | |
5138fde0 TM |
1668 | struct rpc_message msg = { |
1669 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1670 | .rpc_argp = o_arg, | |
1671 | .rpc_resp = o_res, | |
1672 | .rpc_cred = data->owner->so_cred, | |
1673 | }; | |
c970aa85 TM |
1674 | struct rpc_task_setup task_setup_data = { |
1675 | .rpc_client = server->client, | |
5138fde0 | 1676 | .rpc_message = &msg, |
c970aa85 TM |
1677 | .callback_ops = &nfs4_open_ops, |
1678 | .callback_data = data, | |
101070ca | 1679 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1680 | .flags = RPC_TASK_ASYNC, |
1681 | }; | |
24ac23ab TM |
1682 | int status; |
1683 | ||
9d12b216 | 1684 | nfs41_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 1685 | kref_get(&data->kref); |
3e309914 TM |
1686 | data->rpc_done = 0; |
1687 | data->rpc_status = 0; | |
2ced46c2 | 1688 | data->cancelled = 0; |
b257957e AB |
1689 | if (isrecover) |
1690 | task_setup_data.callback_ops = &nfs4_recover_open_ops; | |
c970aa85 | 1691 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1692 | if (IS_ERR(task)) |
1693 | return PTR_ERR(task); | |
1694 | status = nfs4_wait_for_completion_rpc_task(task); | |
1695 | if (status != 0) { | |
1696 | data->cancelled = 1; | |
1697 | smp_wmb(); | |
1698 | } else | |
1699 | status = data->rpc_status; | |
1700 | rpc_put_task(task); | |
1701 | ||
1702 | return status; | |
1703 | } | |
1704 | ||
1705 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1706 | { | |
1707 | struct inode *dir = data->dir->d_inode; | |
1708 | struct nfs_openres *o_res = &data->o_res; | |
1709 | int status; | |
1710 | ||
1711 | status = nfs4_run_open_task(data, 1); | |
1712 | if (status != 0 || !data->rpc_done) | |
1713 | return status; | |
1714 | ||
6926afd1 TM |
1715 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
1716 | ||
b257957e AB |
1717 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
1718 | status = _nfs4_proc_open_confirm(data); | |
1719 | if (status != 0) | |
1720 | return status; | |
1721 | } | |
1722 | ||
1723 | return status; | |
1724 | } | |
1725 | ||
6168f62c WAA |
1726 | static int nfs4_opendata_access(struct rpc_cred *cred, |
1727 | struct nfs4_opendata *opendata, | |
1728 | struct nfs4_state *state, fmode_t fmode) | |
1729 | { | |
1730 | struct nfs_access_entry cache; | |
1731 | u32 mask; | |
1732 | ||
1733 | /* access call failed or for some reason the server doesn't | |
1734 | * support any access modes -- defer access call until later */ | |
1735 | if (opendata->o_res.access_supported == 0) | |
1736 | return 0; | |
1737 | ||
1738 | mask = 0; | |
bbd3a8ee WAA |
1739 | /* don't check MAY_WRITE - a newly created file may not have |
1740 | * write mode bits, but POSIX allows the creating process to write */ | |
6168f62c WAA |
1741 | if (fmode & FMODE_READ) |
1742 | mask |= MAY_READ; | |
6168f62c WAA |
1743 | if (fmode & FMODE_EXEC) |
1744 | mask |= MAY_EXEC; | |
1745 | ||
1746 | cache.cred = cred; | |
1747 | cache.jiffies = jiffies; | |
1748 | nfs_access_set_mask(&cache, opendata->o_res.access_result); | |
1749 | nfs_access_add_cache(state->inode, &cache); | |
1750 | ||
bbd3a8ee | 1751 | if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0) |
6168f62c WAA |
1752 | return 0; |
1753 | ||
1754 | /* even though OPEN succeeded, access is denied. Close the file */ | |
1755 | nfs4_close_state(state, fmode); | |
998f40b5 | 1756 | return -EACCES; |
6168f62c WAA |
1757 | } |
1758 | ||
b257957e AB |
1759 | /* |
1760 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1761 | */ | |
1762 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1763 | { | |
1764 | struct inode *dir = data->dir->d_inode; | |
1765 | struct nfs_server *server = NFS_SERVER(dir); | |
1766 | struct nfs_openargs *o_arg = &data->o_arg; | |
1767 | struct nfs_openres *o_res = &data->o_res; | |
1768 | int status; | |
1769 | ||
1770 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
1771 | if (!data->rpc_done) |
1772 | return status; | |
1773 | if (status != 0) { | |
1774 | if (status == -NFS4ERR_BADNAME && | |
1775 | !(o_arg->open_flags & O_CREAT)) | |
1776 | return -ENOENT; | |
24ac23ab | 1777 | return status; |
08ef7bd3 | 1778 | } |
24ac23ab | 1779 | |
6926afd1 TM |
1780 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
1781 | ||
90ff0c54 | 1782 | if (o_arg->open_flags & O_CREAT) |
56ae19f3 | 1783 | update_changeattr(dir, &o_res->cinfo); |
0df5dd4a TM |
1784 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1785 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1786 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1787 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1788 | if (status != 0) |
24ac23ab | 1789 | return status; |
1da177e4 LT |
1790 | } |
1791 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1792 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1793 | return 0; |
1da177e4 LT |
1794 | } |
1795 | ||
d83217c1 | 1796 | static int nfs4_client_recover_expired_lease(struct nfs_client *clp) |
58d9714a | 1797 | { |
a78cb57a | 1798 | unsigned int loop; |
6b30954e | 1799 | int ret; |
58d9714a | 1800 | |
a78cb57a | 1801 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { |
65de872e | 1802 | ret = nfs4_wait_clnt_recover(clp); |
6b30954e | 1803 | if (ret != 0) |
a78cb57a | 1804 | break; |
e598d843 TM |
1805 | if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) && |
1806 | !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state)) | |
6b30954e | 1807 | break; |
0400a6b0 | 1808 | nfs4_schedule_state_manager(clp); |
a78cb57a | 1809 | ret = -EIO; |
6b30954e | 1810 | } |
a78cb57a | 1811 | return ret; |
58d9714a TM |
1812 | } |
1813 | ||
d83217c1 AA |
1814 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1815 | { | |
1816 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1817 | } | |
1818 | ||
1da177e4 LT |
1819 | /* |
1820 | * OPEN_EXPIRED: | |
1821 | * reclaim state on the server after a network partition. | |
1822 | * Assumes caller holds the appropriate lock | |
1823 | */ | |
539cd03a | 1824 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1825 | { |
e56e0b78 | 1826 | struct nfs4_opendata *opendata; |
864472e9 | 1827 | int ret; |
1da177e4 | 1828 | |
6f220ed5 TM |
1829 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1830 | if (IS_ERR(opendata)) | |
1831 | return PTR_ERR(opendata); | |
864472e9 | 1832 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1833 | if (ret == -ESTALE) |
3d4ff43d | 1834 | d_drop(ctx->dentry); |
c6d00e63 | 1835 | nfs4_opendata_put(opendata); |
864472e9 | 1836 | return ret; |
1da177e4 LT |
1837 | } |
1838 | ||
a9ed2e25 | 1839 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1840 | { |
539cd03a | 1841 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1842 | struct nfs4_exception exception = { }; |
1843 | int err; | |
1844 | ||
1845 | do { | |
539cd03a | 1846 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1847 | switch (err) { |
1848 | default: | |
1849 | goto out; | |
1850 | case -NFS4ERR_GRACE: | |
1851 | case -NFS4ERR_DELAY: | |
1852 | nfs4_handle_exception(server, err, &exception); | |
1853 | err = 0; | |
1854 | } | |
202b50dc | 1855 | } while (exception.retry); |
a9ed2e25 | 1856 | out: |
202b50dc TM |
1857 | return err; |
1858 | } | |
1859 | ||
1da177e4 LT |
1860 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1861 | { | |
1da177e4 | 1862 | struct nfs_open_context *ctx; |
864472e9 | 1863 | int ret; |
1da177e4 | 1864 | |
864472e9 TM |
1865 | ctx = nfs4_state_find_open_context(state); |
1866 | if (IS_ERR(ctx)) | |
1867 | return PTR_ERR(ctx); | |
539cd03a | 1868 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1869 | put_nfs_open_context(ctx); |
1870 | return ret; | |
1da177e4 LT |
1871 | } |
1872 | ||
f062eb6c | 1873 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd | 1874 | static void nfs41_clear_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 1875 | { |
f062eb6c | 1876 | struct nfs_server *server = NFS_SERVER(state->inode); |
3e60ffdd CL |
1877 | nfs4_stateid *stateid = &state->stateid; |
1878 | int status; | |
1879 | ||
1880 | /* If a state reset has been done, test_stateid is unneeded */ | |
1881 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
1882 | return; | |
1883 | ||
1884 | status = nfs41_test_stateid(server, stateid); | |
1885 | if (status != NFS_OK) { | |
1886 | /* Free the stateid unless the server explicitly | |
1887 | * informs us the stateid is unrecognized. */ | |
1888 | if (status != -NFS4ERR_BAD_STATEID) | |
1889 | nfs41_free_stateid(server, stateid); | |
6938867e | 1890 | nfs_remove_bad_delegation(state->inode); |
3e60ffdd | 1891 | |
6938867e BS |
1892 | write_seqlock(&state->seqlock); |
1893 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
1894 | write_sequnlock(&state->seqlock); | |
3e60ffdd CL |
1895 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
1896 | } | |
1897 | } | |
1898 | ||
1899 | /** | |
1900 | * nfs41_check_open_stateid - possibly free an open stateid | |
1901 | * | |
1902 | * @state: NFSv4 state for an inode | |
1903 | * | |
1904 | * Returns NFS_OK if recovery for this stateid is now finished. | |
1905 | * Otherwise a negative NFS4ERR value is returned. | |
1906 | */ | |
1907 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
1908 | { | |
1909 | struct nfs_server *server = NFS_SERVER(state->inode); | |
fcb6d9c6 | 1910 | nfs4_stateid *stateid = &state->open_stateid; |
3e60ffdd CL |
1911 | int status; |
1912 | ||
1913 | /* If a state reset has been done, test_stateid is unneeded */ | |
1914 | if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && | |
1915 | (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && | |
1916 | (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) | |
1917 | return -NFS4ERR_BAD_STATEID; | |
1918 | ||
1919 | status = nfs41_test_stateid(server, stateid); | |
1920 | if (status != NFS_OK) { | |
1921 | /* Free the stateid unless the server explicitly | |
1922 | * informs us the stateid is unrecognized. */ | |
1923 | if (status != -NFS4ERR_BAD_STATEID) | |
1924 | nfs41_free_stateid(server, stateid); | |
1925 | ||
1926 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1927 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1928 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
b01dd1d8 BS |
1929 | } |
1930 | return status; | |
1931 | } | |
1932 | ||
1933 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
1934 | { | |
eb64cf96 | 1935 | int status; |
b01dd1d8 | 1936 | |
3e60ffdd CL |
1937 | nfs41_clear_delegation_stateid(state); |
1938 | status = nfs41_check_open_stateid(state); | |
eb64cf96 CL |
1939 | if (status != NFS_OK) |
1940 | status = nfs4_open_expired(sp, state); | |
1941 | return status; | |
f062eb6c BS |
1942 | } |
1943 | #endif | |
1944 | ||
aa53ed54 JL |
1945 | /* |
1946 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1947 | * fields corresponding to attributes that were used to store the verifier. | |
1948 | * Make sure we clobber those fields in the later setattr call | |
1949 | */ | |
1950 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1951 | { | |
1952 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1953 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1954 | sattr->ia_valid |= ATTR_ATIME; | |
1955 | ||
1956 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1957 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1958 | sattr->ia_valid |= ATTR_MTIME; | |
1959 | } | |
1960 | ||
1da177e4 | 1961 | /* |
24ac23ab | 1962 | * Returns a referenced nfs4_state |
1da177e4 | 1963 | */ |
82be417a AA |
1964 | static int _nfs4_do_open(struct inode *dir, |
1965 | struct dentry *dentry, | |
1966 | fmode_t fmode, | |
1967 | int flags, | |
1968 | struct iattr *sattr, | |
1969 | struct rpc_cred *cred, | |
1970 | struct nfs4_state **res, | |
1971 | struct nfs4_threshold **ctx_th) | |
1da177e4 LT |
1972 | { |
1973 | struct nfs4_state_owner *sp; | |
1974 | struct nfs4_state *state = NULL; | |
1975 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1976 | struct nfs4_opendata *opendata; |
aac00a8d | 1977 | int status; |
1da177e4 LT |
1978 | |
1979 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 1980 | status = -ENOMEM; |
d1e284d5 TM |
1981 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
1982 | if (sp == NULL) { | |
1da177e4 LT |
1983 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
1984 | goto out_err; | |
1985 | } | |
58d9714a TM |
1986 | status = nfs4_recover_expired_lease(server); |
1987 | if (status != 0) | |
b4454fe1 | 1988 | goto err_put_state_owner; |
82a2c1b7 AV |
1989 | if (dentry->d_inode != NULL) |
1990 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 1991 | status = -ENOMEM; |
82a2c1b7 | 1992 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, GFP_KERNEL); |
e56e0b78 | 1993 | if (opendata == NULL) |
95d35cb4 | 1994 | goto err_put_state_owner; |
1da177e4 | 1995 | |
82be417a AA |
1996 | if (ctx_th && server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
1997 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
1998 | if (!opendata->f_attr.mdsthreshold) | |
1999 | goto err_opendata_put; | |
1549210f | 2000 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 2001 | } |
82a2c1b7 AV |
2002 | if (dentry->d_inode != NULL) |
2003 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 2004 | |
24ac23ab | 2005 | status = _nfs4_proc_open(opendata); |
1da177e4 | 2006 | if (status != 0) |
c6d00e63 | 2007 | goto err_opendata_put; |
1da177e4 | 2008 | |
24ac23ab | 2009 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
2010 | status = PTR_ERR(state); |
2011 | if (IS_ERR(state)) | |
c6d00e63 | 2012 | goto err_opendata_put; |
0df5dd4a | 2013 | if (server->caps & NFS_CAP_POSIX_LOCK) |
8e469ebd | 2014 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); |
0ab64e0e | 2015 | |
6168f62c WAA |
2016 | status = nfs4_opendata_access(cred, opendata, state, fmode); |
2017 | if (status != 0) | |
2018 | goto err_opendata_put; | |
2019 | ||
0ab64e0e TM |
2020 | if (opendata->o_arg.open_flags & O_EXCL) { |
2021 | nfs4_exclusive_attrset(opendata, sattr); | |
2022 | ||
2023 | nfs_fattr_init(opendata->o_res.f_attr); | |
2024 | status = nfs4_do_setattr(state->inode, cred, | |
2025 | opendata->o_res.f_attr, sattr, | |
2026 | state); | |
2027 | if (status == 0) | |
2028 | nfs_setattr_update_inode(state->inode, sattr); | |
2029 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
2030 | } | |
82be417a AA |
2031 | |
2032 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) | |
2033 | *ctx_th = opendata->f_attr.mdsthreshold; | |
2034 | else | |
2035 | kfree(opendata->f_attr.mdsthreshold); | |
2036 | opendata->f_attr.mdsthreshold = NULL; | |
2037 | ||
c6d00e63 | 2038 | nfs4_opendata_put(opendata); |
1da177e4 | 2039 | nfs4_put_state_owner(sp); |
1da177e4 LT |
2040 | *res = state; |
2041 | return 0; | |
c6d00e63 | 2042 | err_opendata_put: |
82be417a | 2043 | kfree(opendata->f_attr.mdsthreshold); |
c6d00e63 | 2044 | nfs4_opendata_put(opendata); |
e56e0b78 TM |
2045 | err_put_state_owner: |
2046 | nfs4_put_state_owner(sp); | |
1da177e4 | 2047 | out_err: |
1da177e4 LT |
2048 | *res = NULL; |
2049 | return status; | |
2050 | } | |
2051 | ||
2052 | ||
82be417a AA |
2053 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
2054 | struct dentry *dentry, | |
2055 | fmode_t fmode, | |
2056 | int flags, | |
2057 | struct iattr *sattr, | |
2058 | struct rpc_cred *cred, | |
2059 | struct nfs4_threshold **ctx_th) | |
1da177e4 LT |
2060 | { |
2061 | struct nfs4_exception exception = { }; | |
2062 | struct nfs4_state *res; | |
2063 | int status; | |
2064 | ||
6168f62c | 2065 | fmode &= FMODE_READ|FMODE_WRITE|FMODE_EXEC; |
1da177e4 | 2066 | do { |
82be417a AA |
2067 | status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, cred, |
2068 | &res, ctx_th); | |
1da177e4 LT |
2069 | if (status == 0) |
2070 | break; | |
2071 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
2072 | * book-keeping w.r.t. state-changing operations | |
2073 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
2074 | * It is actually a sign of a bug on the client or on the server. | |
2075 | * | |
2076 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 2077 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
2078 | * have unhashed the old state_owner for us, and that we can |
2079 | * therefore safely retry using a new one. We should still warn | |
2080 | * the user though... | |
2081 | */ | |
2082 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 2083 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
2084 | " returned a bad sequence-id error!\n", |
2085 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
2086 | exception.retry = 1; |
2087 | continue; | |
2088 | } | |
550f5747 TM |
2089 | /* |
2090 | * BAD_STATEID on OPEN means that the server cancelled our | |
2091 | * state before it received the OPEN_CONFIRM. | |
2092 | * Recover by retrying the request as per the discussion | |
2093 | * on Page 181 of RFC3530. | |
2094 | */ | |
2095 | if (status == -NFS4ERR_BAD_STATEID) { | |
2096 | exception.retry = 1; | |
2097 | continue; | |
2098 | } | |
aac00a8d TM |
2099 | if (status == -EAGAIN) { |
2100 | /* We must have found a delegation */ | |
2101 | exception.retry = 1; | |
2102 | continue; | |
2103 | } | |
1da177e4 LT |
2104 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
2105 | status, &exception)); | |
2106 | } while (exception.retry); | |
2107 | return res; | |
2108 | } | |
2109 | ||
659bfcd6 TM |
2110 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2111 | struct nfs_fattr *fattr, struct iattr *sattr, | |
2112 | struct nfs4_state *state) | |
1da177e4 | 2113 | { |
3e4f6290 | 2114 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 2115 | struct nfs_setattrargs arg = { |
3e4f6290 | 2116 | .fh = NFS_FH(inode), |
1da177e4 LT |
2117 | .iap = sattr, |
2118 | .server = server, | |
2119 | .bitmask = server->attr_bitmask, | |
2120 | }; | |
2121 | struct nfs_setattrres res = { | |
2122 | .fattr = fattr, | |
2123 | .server = server, | |
2124 | }; | |
2125 | struct rpc_message msg = { | |
659bfcd6 TM |
2126 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
2127 | .rpc_argp = &arg, | |
2128 | .rpc_resp = &res, | |
2129 | .rpc_cred = cred, | |
1da177e4 | 2130 | }; |
26e976a8 | 2131 | unsigned long timestamp = jiffies; |
65e4308d | 2132 | int status; |
1da177e4 | 2133 | |
0e574af1 | 2134 | nfs_fattr_init(fattr); |
1da177e4 | 2135 | |
4fc8796d | 2136 | if (state != NULL) { |
2a369153 TM |
2137 | struct nfs_lockowner lockowner = { |
2138 | .l_owner = current->files, | |
2139 | .l_pid = current->tgid, | |
2140 | }; | |
4fc8796d | 2141 | nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, |
2a369153 | 2142 | &lockowner); |
4fc8796d TM |
2143 | } else if (nfs4_copy_delegation_stateid(&arg.stateid, inode, |
2144 | FMODE_WRITE)) { | |
3e4f6290 | 2145 | /* Use that stateid */ |
08e9eac4 | 2146 | } else |
f597c537 | 2147 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 2148 | |
7c513058 | 2149 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
2150 | if (status == 0 && state != NULL) |
2151 | renew_lease(server, timestamp); | |
65e4308d | 2152 | return status; |
1da177e4 LT |
2153 | } |
2154 | ||
659bfcd6 TM |
2155 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2156 | struct nfs_fattr *fattr, struct iattr *sattr, | |
2157 | struct nfs4_state *state) | |
1da177e4 | 2158 | { |
3e4f6290 | 2159 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
2160 | struct nfs4_exception exception = { |
2161 | .state = state, | |
3114ea7a | 2162 | .inode = inode, |
a1d0b5ee | 2163 | }; |
1da177e4 LT |
2164 | int err; |
2165 | do { | |
451146be TM |
2166 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state); |
2167 | switch (err) { | |
2168 | case -NFS4ERR_OPENMODE: | |
2169 | if (state && !(state->state & FMODE_WRITE)) { | |
2170 | err = -EBADF; | |
2171 | if (sattr->ia_valid & ATTR_OPEN) | |
2172 | err = -EACCES; | |
2173 | goto out; | |
2174 | } | |
2175 | } | |
2176 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2177 | } while (exception.retry); |
451146be | 2178 | out: |
1da177e4 LT |
2179 | return err; |
2180 | } | |
2181 | ||
2182 | struct nfs4_closedata { | |
2183 | struct inode *inode; | |
2184 | struct nfs4_state *state; | |
2185 | struct nfs_closeargs arg; | |
2186 | struct nfs_closeres res; | |
516a6af6 | 2187 | struct nfs_fattr fattr; |
26e976a8 | 2188 | unsigned long timestamp; |
f7e8917a FI |
2189 | bool roc; |
2190 | u32 roc_barrier; | |
1da177e4 LT |
2191 | }; |
2192 | ||
963d8fe5 | 2193 | static void nfs4_free_closedata(void *data) |
9512135d | 2194 | { |
963d8fe5 TM |
2195 | struct nfs4_closedata *calldata = data; |
2196 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2197 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2198 | |
f7e8917a FI |
2199 | if (calldata->roc) |
2200 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2201 | nfs4_put_open_state(calldata->state); |
2202 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2203 | nfs4_put_state_owner(sp); |
324d003b | 2204 | nfs_sb_deactive_async(sb); |
9512135d TM |
2205 | kfree(calldata); |
2206 | } | |
2207 | ||
88069f77 TM |
2208 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
2209 | fmode_t fmode) | |
2210 | { | |
2211 | spin_lock(&state->owner->so_lock); | |
2212 | if (!(fmode & FMODE_READ)) | |
2213 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2214 | if (!(fmode & FMODE_WRITE)) | |
2215 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2216 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
2217 | spin_unlock(&state->owner->so_lock); | |
2218 | } | |
2219 | ||
963d8fe5 | 2220 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2221 | { |
963d8fe5 | 2222 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2223 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
2224 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
2225 | ||
a3ca5651 | 2226 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2227 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2228 | return; | |
1da177e4 LT |
2229 | /* hmm. we are done with the inode, and in the process of freeing |
2230 | * the state_owner. we keep this around to process errors | |
2231 | */ | |
1da177e4 LT |
2232 | switch (task->tk_status) { |
2233 | case 0: | |
f7e8917a FI |
2234 | if (calldata->roc) |
2235 | pnfs_roc_set_barrier(state->inode, | |
2236 | calldata->roc_barrier); | |
45328c35 | 2237 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 2238 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
2239 | nfs4_close_clear_stateid_flags(state, |
2240 | calldata->arg.fmode); | |
1da177e4 LT |
2241 | break; |
2242 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
2243 | case -NFS4ERR_OLD_STATEID: |
2244 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2245 | case -NFS4ERR_EXPIRED: |
dc0b027d | 2246 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2247 | break; |
1da177e4 | 2248 | default: |
72211dbe TM |
2249 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
2250 | rpc_restart_call_prepare(task); | |
1da177e4 | 2251 | } |
72211dbe | 2252 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2253 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2254 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2255 | } |
2256 | ||
4ce70ada | 2257 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2258 | { |
4ce70ada | 2259 | struct nfs4_closedata *calldata = data; |
9512135d | 2260 | struct nfs4_state *state = calldata->state; |
7fdab069 | 2261 | struct inode *inode = calldata->inode; |
88069f77 | 2262 | int call_close = 0; |
9512135d | 2263 | |
a3ca5651 | 2264 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2265 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 2266 | return; |
003707c7 | 2267 | |
88069f77 TM |
2268 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
2269 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 2270 | spin_lock(&state->owner->so_lock); |
003707c7 | 2271 | /* Calculate the change in open mode */ |
e7616923 | 2272 | if (state->n_rdwr == 0) { |
003707c7 | 2273 | if (state->n_rdonly == 0) { |
88069f77 TM |
2274 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
2275 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2276 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
2277 | } |
2278 | if (state->n_wronly == 0) { | |
88069f77 TM |
2279 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
2280 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2281 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2282 | } |
e7616923 | 2283 | } |
4cecb76f | 2284 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2285 | |
2286 | if (!call_close) { | |
963d8fe5 TM |
2287 | /* Note: exit _without_ calling nfs4_close_done */ |
2288 | task->tk_action = NULL; | |
a3ca5651 | 2289 | goto out; |
9512135d | 2290 | } |
88069f77 | 2291 | |
f7e8917a | 2292 | if (calldata->arg.fmode == 0) { |
88069f77 | 2293 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a | 2294 | if (calldata->roc && |
7fdab069 | 2295 | pnfs_roc_drain(inode, &calldata->roc_barrier, task)) |
a3ca5651 | 2296 | goto out; |
f7e8917a | 2297 | } |
88069f77 | 2298 | |
516a6af6 | 2299 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2300 | calldata->timestamp = jiffies; |
7fdab069 | 2301 | if (nfs4_setup_sequence(NFS_SERVER(inode), |
9d12b216 TM |
2302 | &calldata->arg.seq_args, |
2303 | &calldata->res.seq_res, | |
2240a9e2 TM |
2304 | task) != 0) |
2305 | nfs_release_seqid(calldata->arg.seqid); | |
2306 | else | |
2307 | rpc_call_start(task); | |
a3ca5651 CL |
2308 | out: |
2309 | dprintk("%s: done!\n", __func__); | |
1da177e4 LT |
2310 | } |
2311 | ||
963d8fe5 | 2312 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2313 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2314 | .rpc_call_done = nfs4_close_done, |
2315 | .rpc_release = nfs4_free_closedata, | |
2316 | }; | |
2317 | ||
1da177e4 LT |
2318 | /* |
2319 | * It is possible for data to be read/written from a mem-mapped file | |
2320 | * after the sys_close call (which hits the vfs layer as a flush). | |
2321 | * This means that we can't safely call nfsv4 close on a file until | |
2322 | * the inode is cleared. This in turn means that we are not good | |
2323 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2324 | * share state even when we are done with one of the three share | |
2325 | * stateid's in the inode. | |
2326 | * | |
2327 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2328 | */ | |
1f7977c1 | 2329 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 2330 | { |
4a35bd41 | 2331 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2332 | struct nfs4_closedata *calldata; |
b39e625b TM |
2333 | struct nfs4_state_owner *sp = state->owner; |
2334 | struct rpc_task *task; | |
5138fde0 TM |
2335 | struct rpc_message msg = { |
2336 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2337 | .rpc_cred = state->owner->so_cred, | |
2338 | }; | |
c970aa85 TM |
2339 | struct rpc_task_setup task_setup_data = { |
2340 | .rpc_client = server->client, | |
5138fde0 | 2341 | .rpc_message = &msg, |
c970aa85 | 2342 | .callback_ops = &nfs4_close_ops, |
101070ca | 2343 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2344 | .flags = RPC_TASK_ASYNC, |
2345 | }; | |
9512135d | 2346 | int status = -ENOMEM; |
1da177e4 | 2347 | |
8535b2be | 2348 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2349 | if (calldata == NULL) |
9512135d | 2350 | goto out; |
9d12b216 | 2351 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2352 | calldata->inode = state->inode; |
1da177e4 | 2353 | calldata->state = state; |
4a35bd41 | 2354 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2355 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2356 | /* Serialization for the sequence id */ |
8535b2be | 2357 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2358 | if (calldata->arg.seqid == NULL) |
2359 | goto out_free_calldata; | |
dc0b027d | 2360 | calldata->arg.fmode = 0; |
a65318bf | 2361 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2362 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2363 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2364 | calldata->res.server = server; |
1f7977c1 | 2365 | calldata->roc = pnfs_roc(state->inode); |
643168c2 | 2366 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2367 | |
1174dd1f TM |
2368 | msg.rpc_argp = &calldata->arg; |
2369 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2370 | task_setup_data.callback_data = calldata; |
2371 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2372 | if (IS_ERR(task)) |
2373 | return PTR_ERR(task); | |
a49c3c77 TM |
2374 | status = 0; |
2375 | if (wait) | |
2376 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2377 | rpc_put_task(task); |
a49c3c77 | 2378 | return status; |
9512135d TM |
2379 | out_free_calldata: |
2380 | kfree(calldata); | |
2381 | out: | |
b39e625b TM |
2382 | nfs4_put_open_state(state); |
2383 | nfs4_put_state_owner(sp); | |
9512135d | 2384 | return status; |
1da177e4 LT |
2385 | } |
2386 | ||
2b484297 | 2387 | static struct inode * |
cd9a1c0e | 2388 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2389 | { |
1da177e4 | 2390 | struct nfs4_state *state; |
1da177e4 | 2391 | |
565277f6 | 2392 | /* Protect against concurrent sillydeletes */ |
82be417a AA |
2393 | state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr, |
2394 | ctx->cred, &ctx->mdsthreshold); | |
f46e0bd3 TM |
2395 | if (IS_ERR(state)) |
2396 | return ERR_CAST(state); | |
cd9a1c0e | 2397 | ctx->state = state; |
f46e0bd3 | 2398 | return igrab(state->inode); |
1da177e4 LT |
2399 | } |
2400 | ||
1185a552 | 2401 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2402 | { |
2403 | if (ctx->state == NULL) | |
2404 | return; | |
2405 | if (is_sync) | |
643168c2 | 2406 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2407 | else |
643168c2 | 2408 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2409 | } |
1da177e4 LT |
2410 | |
2411 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2412 | { | |
43652ad5 BH |
2413 | struct nfs4_server_caps_arg args = { |
2414 | .fhandle = fhandle, | |
2415 | }; | |
1da177e4 LT |
2416 | struct nfs4_server_caps_res res = {}; |
2417 | struct rpc_message msg = { | |
2418 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2419 | .rpc_argp = &args, |
1da177e4 LT |
2420 | .rpc_resp = &res, |
2421 | }; | |
2422 | int status; | |
2423 | ||
7c513058 | 2424 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2425 | if (status == 0) { |
2426 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2427 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2428 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2429 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2430 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2431 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2432 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2433 | server->caps |= NFS_CAP_ACLS; | |
2434 | if (res.has_links != 0) | |
2435 | server->caps |= NFS_CAP_HARDLINKS; | |
2436 | if (res.has_symlinks != 0) | |
2437 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2438 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2439 | server->caps |= NFS_CAP_FILEID; | |
2440 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2441 | server->caps |= NFS_CAP_MODE; | |
2442 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2443 | server->caps |= NFS_CAP_NLINK; | |
2444 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2445 | server->caps |= NFS_CAP_OWNER; | |
2446 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2447 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2448 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2449 | server->caps |= NFS_CAP_ATIME; | |
2450 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2451 | server->caps |= NFS_CAP_CTIME; | |
2452 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2453 | server->caps |= NFS_CAP_MTIME; | |
2454 | ||
a65318bf TM |
2455 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2456 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2457 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 | 2458 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2459 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2460 | } |
cccef3b9 | 2461 | |
1da177e4 LT |
2462 | return status; |
2463 | } | |
2464 | ||
55a97593 | 2465 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2466 | { |
2467 | struct nfs4_exception exception = { }; | |
2468 | int err; | |
2469 | do { | |
2470 | err = nfs4_handle_exception(server, | |
2471 | _nfs4_server_capabilities(server, fhandle), | |
2472 | &exception); | |
2473 | } while (exception.retry); | |
2474 | return err; | |
2475 | } | |
2476 | ||
2477 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2478 | struct nfs_fsinfo *info) | |
2479 | { | |
1da177e4 LT |
2480 | struct nfs4_lookup_root_arg args = { |
2481 | .bitmask = nfs4_fattr_bitmap, | |
2482 | }; | |
2483 | struct nfs4_lookup_res res = { | |
2484 | .server = server, | |
0e574af1 | 2485 | .fattr = info->fattr, |
1da177e4 LT |
2486 | .fh = fhandle, |
2487 | }; | |
2488 | struct rpc_message msg = { | |
2489 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2490 | .rpc_argp = &args, | |
2491 | .rpc_resp = &res, | |
2492 | }; | |
008f55d0 | 2493 | |
0e574af1 | 2494 | nfs_fattr_init(info->fattr); |
7c513058 | 2495 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2496 | } |
2497 | ||
2498 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2499 | struct nfs_fsinfo *info) | |
2500 | { | |
2501 | struct nfs4_exception exception = { }; | |
2502 | int err; | |
2503 | do { | |
fb8a5ba8 BS |
2504 | err = _nfs4_lookup_root(server, fhandle, info); |
2505 | switch (err) { | |
2506 | case 0: | |
2507 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 2508 | goto out; |
fb8a5ba8 BS |
2509 | default: |
2510 | err = nfs4_handle_exception(server, err, &exception); | |
2511 | } | |
1da177e4 | 2512 | } while (exception.retry); |
05e9cfb4 | 2513 | out: |
1da177e4 LT |
2514 | return err; |
2515 | } | |
2516 | ||
8f70e95f BS |
2517 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2518 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2519 | { | |
2520 | struct rpc_auth *auth; | |
2521 | int ret; | |
2522 | ||
2523 | auth = rpcauth_create(flavor, server->client); | |
e8d920c5 | 2524 | if (IS_ERR(auth)) { |
8f70e95f BS |
2525 | ret = -EIO; |
2526 | goto out; | |
2527 | } | |
2528 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2529 | out: |
2530 | return ret; | |
2531 | } | |
2532 | ||
801a16dc | 2533 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2534 | struct nfs_fsinfo *info) |
1da177e4 | 2535 | { |
8f70e95f | 2536 | int i, len, status = 0; |
0fabee24 | 2537 | rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS]; |
1da177e4 | 2538 | |
6a1a1e34 | 2539 | len = rpcauth_list_flavors(flav_array, ARRAY_SIZE(flav_array)); |
4ea8fed5 TM |
2540 | if (len < 0) |
2541 | return len; | |
8f70e95f BS |
2542 | |
2543 | for (i = 0; i < len; i++) { | |
6a1a1e34 CL |
2544 | /* AUTH_UNIX is the default flavor if none was specified, |
2545 | * thus has already been tried. */ | |
2546 | if (flav_array[i] == RPC_AUTH_UNIX) | |
2547 | continue; | |
2548 | ||
8f70e95f | 2549 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); |
fb8a5ba8 | 2550 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2551 | continue; |
2552 | break; | |
8f70e95f | 2553 | } |
fb8a5ba8 BS |
2554 | /* |
2555 | * -EACCESS could mean that the user doesn't have correct permissions | |
2556 | * to access the mount. It could also mean that we tried to mount | |
2557 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2558 | * existing mount programs don't handle -EACCES very well so it should | |
2559 | * be mapped to -EPERM instead. | |
2560 | */ | |
2561 | if (status == -EACCES) | |
2562 | status = -EPERM; | |
801a16dc BS |
2563 | return status; |
2564 | } | |
2565 | ||
2566 | /* | |
2567 | * get the file handle for the "/" directory on the server | |
2568 | */ | |
3028eb2b BS |
2569 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
2570 | struct nfs_fsinfo *info) | |
801a16dc | 2571 | { |
fca78d6d | 2572 | int minor_version = server->nfs_client->cl_minorversion; |
801a16dc | 2573 | int status = nfs4_lookup_root(server, fhandle, info); |
fb8a5ba8 BS |
2574 | if ((status == -NFS4ERR_WRONGSEC) && !(server->flags & NFS_MOUNT_SECFLAVOUR)) |
2575 | /* | |
2576 | * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM | |
2577 | * by nfs4_map_errors() as this function exits. | |
2578 | */ | |
fca78d6d | 2579 | status = nfs_v4_minor_ops[minor_version]->find_root_sec(server, fhandle, info); |
1da177e4 LT |
2580 | if (status == 0) |
2581 | status = nfs4_server_capabilities(server, fhandle); | |
2582 | if (status == 0) | |
2583 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2584 | return nfs4_map_errors(status); |
1da177e4 LT |
2585 | } |
2586 | ||
bae36241 BS |
2587 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
2588 | struct nfs_fsinfo *info) | |
2589 | { | |
2590 | int error; | |
2591 | struct nfs_fattr *fattr = info->fattr; | |
2592 | ||
2593 | error = nfs4_server_capabilities(server, mntfh); | |
2594 | if (error < 0) { | |
2595 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
2596 | return error; | |
2597 | } | |
2598 | ||
2599 | error = nfs4_proc_getattr(server, mntfh, fattr); | |
2600 | if (error < 0) { | |
2601 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
2602 | return error; | |
2603 | } | |
2604 | ||
2605 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
2606 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
2607 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
2608 | ||
2609 | return error; | |
2610 | } | |
2611 | ||
6b97fd3d MN |
2612 | /* |
2613 | * Get locations and (maybe) other attributes of a referral. | |
2614 | * Note that we'll actually follow the referral later when | |
2615 | * we detect fsid mismatch in inode revalidation | |
2616 | */ | |
f05d147f BS |
2617 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
2618 | const struct qstr *name, struct nfs_fattr *fattr, | |
2619 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
2620 | { |
2621 | int status = -ENOMEM; | |
2622 | struct page *page = NULL; | |
2623 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2624 | |
2625 | page = alloc_page(GFP_KERNEL); | |
2626 | if (page == NULL) | |
2627 | goto out; | |
2628 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2629 | if (locations == NULL) | |
2630 | goto out; | |
2631 | ||
f05d147f | 2632 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
2633 | if (status != 0) |
2634 | goto out; | |
2635 | /* Make sure server returned a different fsid for the referral */ | |
2636 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2637 | dprintk("%s: server did not return a different fsid for" |
2638 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2639 | status = -EIO; |
2640 | goto out; | |
2641 | } | |
533eb461 AA |
2642 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2643 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2644 | |
533eb461 | 2645 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2646 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2647 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2648 | out: | |
2649 | if (page) | |
2650 | __free_page(page); | |
5d7ca35a | 2651 | kfree(locations); |
6b97fd3d MN |
2652 | return status; |
2653 | } | |
2654 | ||
1da177e4 LT |
2655 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2656 | { | |
2657 | struct nfs4_getattr_arg args = { | |
2658 | .fh = fhandle, | |
2659 | .bitmask = server->attr_bitmask, | |
2660 | }; | |
2661 | struct nfs4_getattr_res res = { | |
2662 | .fattr = fattr, | |
2663 | .server = server, | |
2664 | }; | |
2665 | struct rpc_message msg = { | |
2666 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2667 | .rpc_argp = &args, | |
2668 | .rpc_resp = &res, | |
2669 | }; | |
2670 | ||
0e574af1 | 2671 | nfs_fattr_init(fattr); |
7c513058 | 2672 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2673 | } |
2674 | ||
2675 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2676 | { | |
2677 | struct nfs4_exception exception = { }; | |
2678 | int err; | |
2679 | do { | |
2680 | err = nfs4_handle_exception(server, | |
2681 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2682 | &exception); | |
2683 | } while (exception.retry); | |
2684 | return err; | |
2685 | } | |
2686 | ||
2687 | /* | |
2688 | * The file is not closed if it is opened due to the a request to change | |
2689 | * the size of the file. The open call will not be needed once the | |
2690 | * VFS layer lookup-intents are implemented. | |
2691 | * | |
2692 | * Close is called when the inode is destroyed. | |
2693 | * If we haven't opened the file for O_WRONLY, we | |
2694 | * need to in the size_change case to obtain a stateid. | |
2695 | * | |
2696 | * Got race? | |
2697 | * Because OPEN is always done by name in nfsv4, it is | |
2698 | * possible that we opened a different file by the same | |
2699 | * name. We can recognize this race condition, but we | |
2700 | * can't do anything about it besides returning an error. | |
2701 | * | |
2702 | * This will be fixed with VFS changes (lookup-intent). | |
2703 | */ | |
2704 | static int | |
2705 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2706 | struct iattr *sattr) | |
2707 | { | |
08e9eac4 | 2708 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2709 | struct rpc_cred *cred = NULL; |
d530838b | 2710 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2711 | int status; |
2712 | ||
8a1636c4 BH |
2713 | if (pnfs_ld_layoutret_on_setattr(inode)) |
2714 | pnfs_return_layout(inode); | |
2715 | ||
0e574af1 | 2716 | nfs_fattr_init(fattr); |
1da177e4 | 2717 | |
2669940d AA |
2718 | /* Deal with open(O_TRUNC) */ |
2719 | if (sattr->ia_valid & ATTR_OPEN) | |
2720 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME|ATTR_OPEN); | |
2721 | ||
2722 | /* Optimization: if the end result is no change, don't RPC */ | |
2723 | if ((sattr->ia_valid & ~(ATTR_FILE)) == 0) | |
2724 | return 0; | |
2725 | ||
d530838b | 2726 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2727 | if (sattr->ia_valid & ATTR_FILE) { |
2728 | struct nfs_open_context *ctx; | |
2729 | ||
2730 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2731 | if (ctx) { |
2732 | cred = ctx->cred; | |
2733 | state = ctx->state; | |
2734 | } | |
659bfcd6 | 2735 | } |
08e9eac4 | 2736 | |
659bfcd6 | 2737 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2738 | if (status == 0) |
2739 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2740 | return status; |
2741 | } | |
2742 | ||
0c2e53f1 TM |
2743 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2744 | const struct qstr *name, struct nfs_fh *fhandle, | |
2745 | struct nfs_fattr *fattr) | |
2b3de441 | 2746 | { |
0c2e53f1 | 2747 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
2748 | int status; |
2749 | struct nfs4_lookup_arg args = { | |
2750 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 2751 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
2752 | .name = name, |
2753 | }; | |
2754 | struct nfs4_lookup_res res = { | |
2755 | .server = server, | |
2756 | .fattr = fattr, | |
2757 | .fh = fhandle, | |
2758 | }; | |
2759 | struct rpc_message msg = { | |
2760 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2761 | .rpc_argp = &args, | |
2762 | .rpc_resp = &res, | |
2763 | }; | |
2764 | ||
2765 | nfs_fattr_init(fattr); | |
2766 | ||
1da177e4 | 2767 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 2768 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2769 | dprintk("NFS reply lookup: %d\n", status); |
2770 | return status; | |
2771 | } | |
2772 | ||
72de53ec | 2773 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 2774 | { |
7ebb9315 | 2775 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 2776 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
2777 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
2778 | fattr->nlink = 2; | |
2779 | } | |
2780 | ||
72de53ec BS |
2781 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
2782 | struct qstr *name, struct nfs_fh *fhandle, | |
2783 | struct nfs_fattr *fattr) | |
1da177e4 LT |
2784 | { |
2785 | struct nfs4_exception exception = { }; | |
72de53ec | 2786 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
2787 | int err; |
2788 | do { | |
72de53ec BS |
2789 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr); |
2790 | switch (err) { | |
08ef7bd3 | 2791 | case -NFS4ERR_BADNAME: |
72de53ec BS |
2792 | err = -ENOENT; |
2793 | goto out; | |
0c2e53f1 | 2794 | case -NFS4ERR_MOVED: |
f05d147f | 2795 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
72de53ec | 2796 | goto out; |
0c2e53f1 | 2797 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
2798 | err = -EPERM; |
2799 | if (client != *clnt) | |
2800 | goto out; | |
2801 | ||
2802 | client = nfs4_create_sec_client(client, dir, name); | |
2803 | if (IS_ERR(client)) | |
2804 | return PTR_ERR(client); | |
2805 | ||
2806 | exception.retry = 1; | |
2807 | break; | |
2808 | default: | |
2809 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 2810 | } |
1da177e4 | 2811 | } while (exception.retry); |
72de53ec BS |
2812 | |
2813 | out: | |
2814 | if (err == 0) | |
2815 | *clnt = client; | |
2816 | else if (client != *clnt) | |
2817 | rpc_shutdown_client(client); | |
2818 | ||
1da177e4 LT |
2819 | return err; |
2820 | } | |
2821 | ||
80a16b21 | 2822 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
72de53ec BS |
2823 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2824 | { | |
2825 | int status; | |
2826 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
2827 | ||
2828 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2829 | if (client != NFS_CLIENT(dir)) { | |
2830 | rpc_shutdown_client(client); | |
2831 | nfs_fixup_secinfo_attributes(fattr); | |
2832 | } | |
2833 | return status; | |
2834 | } | |
2835 | ||
f05d147f BS |
2836 | struct rpc_clnt * |
2837 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
2838 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2839 | { | |
2840 | int status; | |
2841 | struct rpc_clnt *client = rpc_clone_client(NFS_CLIENT(dir)); | |
2842 | ||
2843 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2844 | if (status < 0) { | |
2845 | rpc_shutdown_client(client); | |
2846 | return ERR_PTR(status); | |
2847 | } | |
2848 | return client; | |
2849 | } | |
2850 | ||
1da177e4 LT |
2851 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
2852 | { | |
76b32999 | 2853 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2854 | struct nfs4_accessargs args = { |
2855 | .fh = NFS_FH(inode), | |
a4980e78 | 2856 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
2857 | }; |
2858 | struct nfs4_accessres res = { | |
2859 | .server = server, | |
1da177e4 | 2860 | }; |
1da177e4 LT |
2861 | struct rpc_message msg = { |
2862 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2863 | .rpc_argp = &args, | |
2864 | .rpc_resp = &res, | |
2865 | .rpc_cred = entry->cred, | |
2866 | }; | |
2867 | int mode = entry->mask; | |
2868 | int status; | |
2869 | ||
2870 | /* | |
2871 | * Determine which access bits we want to ask for... | |
2872 | */ | |
2873 | if (mode & MAY_READ) | |
2874 | args.access |= NFS4_ACCESS_READ; | |
2875 | if (S_ISDIR(inode->i_mode)) { | |
2876 | if (mode & MAY_WRITE) | |
2877 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2878 | if (mode & MAY_EXEC) | |
2879 | args.access |= NFS4_ACCESS_LOOKUP; | |
2880 | } else { | |
2881 | if (mode & MAY_WRITE) | |
2882 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2883 | if (mode & MAY_EXEC) | |
2884 | args.access |= NFS4_ACCESS_EXECUTE; | |
2885 | } | |
c407d41a TM |
2886 | |
2887 | res.fattr = nfs_alloc_fattr(); | |
2888 | if (res.fattr == NULL) | |
2889 | return -ENOMEM; | |
2890 | ||
7c513058 | 2891 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 2892 | if (!status) { |
6168f62c | 2893 | nfs_access_set_mask(entry, res.access); |
c407d41a | 2894 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2895 | } |
c407d41a | 2896 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2897 | return status; |
2898 | } | |
2899 | ||
2900 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2901 | { | |
2902 | struct nfs4_exception exception = { }; | |
2903 | int err; | |
2904 | do { | |
2905 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2906 | _nfs4_proc_access(inode, entry), | |
2907 | &exception); | |
2908 | } while (exception.retry); | |
2909 | return err; | |
2910 | } | |
2911 | ||
2912 | /* | |
2913 | * TODO: For the time being, we don't try to get any attributes | |
2914 | * along with any of the zero-copy operations READ, READDIR, | |
2915 | * READLINK, WRITE. | |
2916 | * | |
2917 | * In the case of the first three, we want to put the GETATTR | |
2918 | * after the read-type operation -- this is because it is hard | |
2919 | * to predict the length of a GETATTR response in v4, and thus | |
2920 | * align the READ data correctly. This means that the GETATTR | |
2921 | * may end up partially falling into the page cache, and we should | |
2922 | * shift it into the 'tail' of the xdr_buf before processing. | |
2923 | * To do this efficiently, we need to know the total length | |
2924 | * of data received, which doesn't seem to be available outside | |
2925 | * of the RPC layer. | |
2926 | * | |
2927 | * In the case of WRITE, we also want to put the GETATTR after | |
2928 | * the operation -- in this case because we want to make sure | |
140150db | 2929 | * we get the post-operation mtime and size. |
1da177e4 LT |
2930 | * |
2931 | * Both of these changes to the XDR layer would in fact be quite | |
2932 | * minor, but I decided to leave them for a subsequent patch. | |
2933 | */ | |
2934 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2935 | unsigned int pgbase, unsigned int pglen) | |
2936 | { | |
2937 | struct nfs4_readlink args = { | |
2938 | .fh = NFS_FH(inode), | |
2939 | .pgbase = pgbase, | |
2940 | .pglen = pglen, | |
2941 | .pages = &page, | |
2942 | }; | |
f50c7000 | 2943 | struct nfs4_readlink_res res; |
1da177e4 LT |
2944 | struct rpc_message msg = { |
2945 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2946 | .rpc_argp = &args, | |
f50c7000 | 2947 | .rpc_resp = &res, |
1da177e4 LT |
2948 | }; |
2949 | ||
7c513058 | 2950 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2951 | } |
2952 | ||
2953 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2954 | unsigned int pgbase, unsigned int pglen) | |
2955 | { | |
2956 | struct nfs4_exception exception = { }; | |
2957 | int err; | |
2958 | do { | |
2959 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2960 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2961 | &exception); | |
2962 | } while (exception.retry); | |
2963 | return err; | |
2964 | } | |
2965 | ||
1da177e4 | 2966 | /* |
8867fe58 | 2967 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 2968 | */ |
1da177e4 LT |
2969 | static int |
2970 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 2971 | int flags) |
1da177e4 | 2972 | { |
8867fe58 | 2973 | struct nfs_open_context *ctx; |
1da177e4 | 2974 | struct nfs4_state *state; |
1da177e4 LT |
2975 | int status = 0; |
2976 | ||
8867fe58 MS |
2977 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
2978 | if (IS_ERR(ctx)) | |
2979 | return PTR_ERR(ctx); | |
2980 | ||
a8a5da99 | 2981 | sattr->ia_mode &= ~current_umask(); |
8626e4a4 TM |
2982 | state = nfs4_do_open(dir, dentry, ctx->mode, |
2983 | flags, sattr, ctx->cred, | |
2984 | &ctx->mdsthreshold); | |
d4d9cdcb | 2985 | d_drop(dentry); |
1da177e4 LT |
2986 | if (IS_ERR(state)) { |
2987 | status = PTR_ERR(state); | |
c0204fd2 | 2988 | goto out; |
1da177e4 | 2989 | } |
d4d9cdcb | 2990 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2991 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
8867fe58 | 2992 | ctx->state = state; |
1da177e4 | 2993 | out: |
8867fe58 | 2994 | put_nfs_open_context(ctx); |
1da177e4 LT |
2995 | return status; |
2996 | } | |
2997 | ||
2998 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2999 | { | |
16e42959 | 3000 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 3001 | struct nfs_removeargs args = { |
1da177e4 | 3002 | .fh = NFS_FH(dir), |
26fe5750 | 3003 | .name = *name, |
16e42959 | 3004 | }; |
4fdc17b2 | 3005 | struct nfs_removeres res = { |
16e42959 | 3006 | .server = server, |
1da177e4 | 3007 | }; |
1da177e4 | 3008 | struct rpc_message msg = { |
4fdc17b2 TM |
3009 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
3010 | .rpc_argp = &args, | |
3011 | .rpc_resp = &res, | |
1da177e4 | 3012 | }; |
778d2817 | 3013 | int status; |
1da177e4 | 3014 | |
7c513058 | 3015 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 3016 | if (status == 0) |
16e42959 | 3017 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
3018 | return status; |
3019 | } | |
3020 | ||
3021 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3022 | { | |
3023 | struct nfs4_exception exception = { }; | |
3024 | int err; | |
3025 | do { | |
3026 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3027 | _nfs4_proc_remove(dir, name), | |
3028 | &exception); | |
3029 | } while (exception.retry); | |
3030 | return err; | |
3031 | } | |
3032 | ||
e4eff1a6 | 3033 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 3034 | { |
e4eff1a6 TM |
3035 | struct nfs_server *server = NFS_SERVER(dir); |
3036 | struct nfs_removeargs *args = msg->rpc_argp; | |
3037 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 3038 | |
e4eff1a6 | 3039 | res->server = server; |
1da177e4 | 3040 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
9d12b216 | 3041 | nfs41_init_sequence(&args->seq_args, &res->seq_res, 1); |
1da177e4 LT |
3042 | } |
3043 | ||
34e137cc BS |
3044 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
3045 | { | |
3046 | if (nfs4_setup_sequence(NFS_SERVER(data->dir), | |
3047 | &data->args.seq_args, | |
3048 | &data->res.seq_res, | |
3049 | task)) | |
3050 | return; | |
3051 | rpc_call_start(task); | |
1da177e4 LT |
3052 | } |
3053 | ||
e4eff1a6 | 3054 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 3055 | { |
e4eff1a6 TM |
3056 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
3057 | ||
14516c3a TM |
3058 | if (!nfs4_sequence_done(task, &res->seq_res)) |
3059 | return 0; | |
9e33bed5 | 3060 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
3061 | return 0; |
3062 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 3063 | return 1; |
1da177e4 LT |
3064 | } |
3065 | ||
d3d4152a JL |
3066 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
3067 | { | |
3068 | struct nfs_server *server = NFS_SERVER(dir); | |
3069 | struct nfs_renameargs *arg = msg->rpc_argp; | |
3070 | struct nfs_renameres *res = msg->rpc_resp; | |
3071 | ||
3072 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 3073 | res->server = server; |
9d12b216 | 3074 | nfs41_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
3075 | } |
3076 | ||
c6bfa1a1 BS |
3077 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
3078 | { | |
3079 | if (nfs4_setup_sequence(NFS_SERVER(data->old_dir), | |
3080 | &data->args.seq_args, | |
3081 | &data->res.seq_res, | |
3082 | task)) | |
3083 | return; | |
3084 | rpc_call_start(task); | |
d3d4152a JL |
3085 | } |
3086 | ||
3087 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
3088 | struct inode *new_dir) | |
3089 | { | |
3090 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
3091 | ||
3092 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
3093 | return 0; | |
3094 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
3095 | return 0; | |
3096 | ||
3097 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 3098 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
3099 | return 1; |
3100 | } | |
3101 | ||
1da177e4 LT |
3102 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
3103 | struct inode *new_dir, struct qstr *new_name) | |
3104 | { | |
6caf2c82 | 3105 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 3106 | struct nfs_renameargs arg = { |
1da177e4 LT |
3107 | .old_dir = NFS_FH(old_dir), |
3108 | .new_dir = NFS_FH(new_dir), | |
3109 | .old_name = old_name, | |
3110 | .new_name = new_name, | |
6caf2c82 | 3111 | }; |
e8582a8b | 3112 | struct nfs_renameres res = { |
6caf2c82 | 3113 | .server = server, |
1da177e4 | 3114 | }; |
1da177e4 LT |
3115 | struct rpc_message msg = { |
3116 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
3117 | .rpc_argp = &arg, | |
3118 | .rpc_resp = &res, | |
3119 | }; | |
011fff72 | 3120 | int status = -ENOMEM; |
1da177e4 | 3121 | |
7c513058 | 3122 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
3123 | if (!status) { |
3124 | update_changeattr(old_dir, &res.old_cinfo); | |
3125 | update_changeattr(new_dir, &res.new_cinfo); | |
3126 | } | |
3127 | return status; | |
3128 | } | |
3129 | ||
3130 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
3131 | struct inode *new_dir, struct qstr *new_name) | |
3132 | { | |
3133 | struct nfs4_exception exception = { }; | |
3134 | int err; | |
3135 | do { | |
3136 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
3137 | _nfs4_proc_rename(old_dir, old_name, | |
3138 | new_dir, new_name), | |
3139 | &exception); | |
3140 | } while (exception.retry); | |
3141 | return err; | |
3142 | } | |
3143 | ||
3144 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3145 | { | |
91ba2eee | 3146 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3147 | struct nfs4_link_arg arg = { |
3148 | .fh = NFS_FH(inode), | |
3149 | .dir_fh = NFS_FH(dir), | |
3150 | .name = name, | |
91ba2eee TM |
3151 | .bitmask = server->attr_bitmask, |
3152 | }; | |
91ba2eee TM |
3153 | struct nfs4_link_res res = { |
3154 | .server = server, | |
1da177e4 | 3155 | }; |
1da177e4 LT |
3156 | struct rpc_message msg = { |
3157 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3158 | .rpc_argp = &arg, | |
91ba2eee | 3159 | .rpc_resp = &res, |
1da177e4 | 3160 | }; |
136f2627 TM |
3161 | int status = -ENOMEM; |
3162 | ||
3163 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3164 | if (res.fattr == NULL) |
136f2627 | 3165 | goto out; |
1da177e4 | 3166 | |
7c513058 | 3167 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3168 | if (!status) { |
3169 | update_changeattr(dir, &res.cinfo); | |
73a3d07c | 3170 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 3171 | } |
136f2627 | 3172 | out: |
136f2627 | 3173 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3174 | return status; |
3175 | } | |
3176 | ||
3177 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3178 | { | |
3179 | struct nfs4_exception exception = { }; | |
3180 | int err; | |
3181 | do { | |
3182 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3183 | _nfs4_proc_link(inode, dir, name), | |
3184 | &exception); | |
3185 | } while (exception.retry); | |
3186 | return err; | |
3187 | } | |
3188 | ||
57dc9a57 TM |
3189 | struct nfs4_createdata { |
3190 | struct rpc_message msg; | |
3191 | struct nfs4_create_arg arg; | |
3192 | struct nfs4_create_res res; | |
3193 | struct nfs_fh fh; | |
3194 | struct nfs_fattr fattr; | |
57dc9a57 TM |
3195 | }; |
3196 | ||
3197 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3198 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3199 | { | |
3200 | struct nfs4_createdata *data; | |
3201 | ||
3202 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3203 | if (data != NULL) { | |
3204 | struct nfs_server *server = NFS_SERVER(dir); | |
3205 | ||
3206 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
3207 | data->msg.rpc_argp = &data->arg; | |
3208 | data->msg.rpc_resp = &data->res; | |
3209 | data->arg.dir_fh = NFS_FH(dir); | |
3210 | data->arg.server = server; | |
3211 | data->arg.name = name; | |
3212 | data->arg.attrs = sattr; | |
3213 | data->arg.ftype = ftype; | |
3214 | data->arg.bitmask = server->attr_bitmask; | |
3215 | data->res.server = server; | |
3216 | data->res.fh = &data->fh; | |
3217 | data->res.fattr = &data->fattr; | |
57dc9a57 | 3218 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3219 | } |
3220 | return data; | |
3221 | } | |
3222 | ||
3223 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3224 | { | |
7c513058 | 3225 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3226 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3227 | if (status == 0) { |
3228 | update_changeattr(dir, &data->res.dir_cinfo); | |
57dc9a57 TM |
3229 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); |
3230 | } | |
3231 | return status; | |
3232 | } | |
3233 | ||
3234 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3235 | { | |
3236 | kfree(data); | |
3237 | } | |
3238 | ||
4f390c15 | 3239 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3240 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 3241 | { |
57dc9a57 TM |
3242 | struct nfs4_createdata *data; |
3243 | int status = -ENAMETOOLONG; | |
1da177e4 | 3244 | |
94a6d753 | 3245 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3246 | goto out; |
4f390c15 | 3247 | |
57dc9a57 TM |
3248 | status = -ENOMEM; |
3249 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3250 | if (data == NULL) | |
3251 | goto out; | |
3252 | ||
3253 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3254 | data->arg.u.symlink.pages = &page; | |
3255 | data->arg.u.symlink.len = len; | |
1da177e4 | 3256 | |
57dc9a57 TM |
3257 | status = nfs4_do_create(dir, dentry, data); |
3258 | ||
3259 | nfs4_free_createdata(data); | |
3260 | out: | |
1da177e4 LT |
3261 | return status; |
3262 | } | |
3263 | ||
4f390c15 | 3264 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3265 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3266 | { |
3267 | struct nfs4_exception exception = { }; | |
3268 | int err; | |
3269 | do { | |
3270 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
3271 | _nfs4_proc_symlink(dir, dentry, page, |
3272 | len, sattr), | |
1da177e4 LT |
3273 | &exception); |
3274 | } while (exception.retry); | |
3275 | return err; | |
3276 | } | |
3277 | ||
3278 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3279 | struct iattr *sattr) | |
3280 | { | |
57dc9a57 TM |
3281 | struct nfs4_createdata *data; |
3282 | int status = -ENOMEM; | |
1da177e4 | 3283 | |
57dc9a57 TM |
3284 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3285 | if (data == NULL) | |
3286 | goto out; | |
3287 | ||
3288 | status = nfs4_do_create(dir, dentry, data); | |
3289 | ||
3290 | nfs4_free_createdata(data); | |
3291 | out: | |
1da177e4 LT |
3292 | return status; |
3293 | } | |
3294 | ||
3295 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3296 | struct iattr *sattr) | |
3297 | { | |
3298 | struct nfs4_exception exception = { }; | |
3299 | int err; | |
a8a5da99 AK |
3300 | |
3301 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3302 | do { |
3303 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3304 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
3305 | &exception); | |
3306 | } while (exception.retry); | |
3307 | return err; | |
3308 | } | |
3309 | ||
3310 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3311 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3312 | { |
3313 | struct inode *dir = dentry->d_inode; | |
3314 | struct nfs4_readdir_arg args = { | |
3315 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3316 | .pages = pages, |
1da177e4 LT |
3317 | .pgbase = 0, |
3318 | .count = count, | |
96d25e53 | 3319 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3320 | .plus = plus, |
1da177e4 LT |
3321 | }; |
3322 | struct nfs4_readdir_res res; | |
3323 | struct rpc_message msg = { | |
3324 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3325 | .rpc_argp = &args, | |
3326 | .rpc_resp = &res, | |
3327 | .rpc_cred = cred, | |
3328 | }; | |
3329 | int status; | |
3330 | ||
3110ff80 | 3331 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3332 | dentry->d_parent->d_name.name, |
3333 | dentry->d_name.name, | |
3334 | (unsigned long long)cookie); | |
c3f52af3 | 3335 | nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); |
1da177e4 | 3336 | res.pgbase = args.pgbase; |
7c513058 | 3337 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3338 | if (status >= 0) { |
c3f52af3 | 3339 | memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3340 | status += args.pgbase; |
3341 | } | |
c4812998 TM |
3342 | |
3343 | nfs_invalidate_atime(dir); | |
3344 | ||
3110ff80 | 3345 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3346 | return status; |
3347 | } | |
3348 | ||
3349 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3350 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3351 | { |
3352 | struct nfs4_exception exception = { }; | |
3353 | int err; | |
3354 | do { | |
3355 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3356 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3357 | pages, count, plus), |
1da177e4 LT |
3358 | &exception); |
3359 | } while (exception.retry); | |
3360 | return err; | |
3361 | } | |
3362 | ||
3363 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3364 | struct iattr *sattr, dev_t rdev) | |
3365 | { | |
57dc9a57 TM |
3366 | struct nfs4_createdata *data; |
3367 | int mode = sattr->ia_mode; | |
3368 | int status = -ENOMEM; | |
1da177e4 | 3369 | |
57dc9a57 TM |
3370 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); |
3371 | if (data == NULL) | |
3372 | goto out; | |
3373 | ||
1da177e4 | 3374 | if (S_ISFIFO(mode)) |
57dc9a57 | 3375 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3376 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3377 | data->arg.ftype = NF4BLK; |
3378 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3379 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3380 | } |
3381 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3382 | data->arg.ftype = NF4CHR; |
3383 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3384 | data->arg.u.device.specdata2 = MINOR(rdev); | |
4ea8fed5 TM |
3385 | } else if (!S_ISSOCK(mode)) { |
3386 | status = -EINVAL; | |
3387 | goto out_free; | |
1da177e4 | 3388 | } |
1da177e4 | 3389 | |
57dc9a57 | 3390 | status = nfs4_do_create(dir, dentry, data); |
4ea8fed5 | 3391 | out_free: |
57dc9a57 TM |
3392 | nfs4_free_createdata(data); |
3393 | out: | |
1da177e4 LT |
3394 | return status; |
3395 | } | |
3396 | ||
3397 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3398 | struct iattr *sattr, dev_t rdev) | |
3399 | { | |
3400 | struct nfs4_exception exception = { }; | |
3401 | int err; | |
a8a5da99 AK |
3402 | |
3403 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3404 | do { |
3405 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3406 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
3407 | &exception); | |
3408 | } while (exception.retry); | |
3409 | return err; | |
3410 | } | |
3411 | ||
3412 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3413 | struct nfs_fsstat *fsstat) | |
3414 | { | |
3415 | struct nfs4_statfs_arg args = { | |
3416 | .fh = fhandle, | |
3417 | .bitmask = server->attr_bitmask, | |
3418 | }; | |
24ad148a BH |
3419 | struct nfs4_statfs_res res = { |
3420 | .fsstat = fsstat, | |
3421 | }; | |
1da177e4 LT |
3422 | struct rpc_message msg = { |
3423 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3424 | .rpc_argp = &args, | |
24ad148a | 3425 | .rpc_resp = &res, |
1da177e4 LT |
3426 | }; |
3427 | ||
0e574af1 | 3428 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3429 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3430 | } |
3431 | ||
3432 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3433 | { | |
3434 | struct nfs4_exception exception = { }; | |
3435 | int err; | |
3436 | do { | |
3437 | err = nfs4_handle_exception(server, | |
3438 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3439 | &exception); | |
3440 | } while (exception.retry); | |
3441 | return err; | |
3442 | } | |
3443 | ||
3444 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3445 | struct nfs_fsinfo *fsinfo) | |
3446 | { | |
3447 | struct nfs4_fsinfo_arg args = { | |
3448 | .fh = fhandle, | |
3449 | .bitmask = server->attr_bitmask, | |
3450 | }; | |
3dda5e43 BH |
3451 | struct nfs4_fsinfo_res res = { |
3452 | .fsinfo = fsinfo, | |
3453 | }; | |
1da177e4 LT |
3454 | struct rpc_message msg = { |
3455 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3456 | .rpc_argp = &args, | |
3dda5e43 | 3457 | .rpc_resp = &res, |
1da177e4 LT |
3458 | }; |
3459 | ||
7c513058 | 3460 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3461 | } |
3462 | ||
3463 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3464 | { | |
3465 | struct nfs4_exception exception = { }; | |
3466 | int err; | |
3467 | ||
3468 | do { | |
3469 | err = nfs4_handle_exception(server, | |
3470 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
3471 | &exception); | |
3472 | } while (exception.retry); | |
3473 | return err; | |
3474 | } | |
3475 | ||
3476 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3477 | { | |
e38eb650 BS |
3478 | int error; |
3479 | ||
0e574af1 | 3480 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 3481 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
3482 | if (error == 0) { |
3483 | /* block layout checks this! */ | |
3484 | server->pnfs_blksize = fsinfo->blksize; | |
e38eb650 | 3485 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); |
dc182549 | 3486 | } |
e38eb650 BS |
3487 | |
3488 | return error; | |
1da177e4 LT |
3489 | } |
3490 | ||
3491 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3492 | struct nfs_pathconf *pathconf) | |
3493 | { | |
3494 | struct nfs4_pathconf_arg args = { | |
3495 | .fh = fhandle, | |
3496 | .bitmask = server->attr_bitmask, | |
3497 | }; | |
d45b2989 BH |
3498 | struct nfs4_pathconf_res res = { |
3499 | .pathconf = pathconf, | |
3500 | }; | |
1da177e4 LT |
3501 | struct rpc_message msg = { |
3502 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3503 | .rpc_argp = &args, | |
d45b2989 | 3504 | .rpc_resp = &res, |
1da177e4 LT |
3505 | }; |
3506 | ||
3507 | /* None of the pathconf attributes are mandatory to implement */ | |
3508 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3509 | memset(pathconf, 0, sizeof(*pathconf)); | |
3510 | return 0; | |
3511 | } | |
3512 | ||
0e574af1 | 3513 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3514 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3515 | } |
3516 | ||
3517 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3518 | struct nfs_pathconf *pathconf) | |
3519 | { | |
3520 | struct nfs4_exception exception = { }; | |
3521 | int err; | |
3522 | ||
3523 | do { | |
3524 | err = nfs4_handle_exception(server, | |
3525 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3526 | &exception); | |
3527 | } while (exception.retry); | |
3528 | return err; | |
3529 | } | |
3530 | ||
d20581aa BH |
3531 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3532 | { | |
cd841605 | 3533 | nfs_invalidate_atime(data->header->inode); |
d20581aa BH |
3534 | } |
3535 | ||
cbdabc7f | 3536 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3537 | { |
cd841605 | 3538 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
1da177e4 | 3539 | |
9e33bed5 | 3540 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3541 | rpc_restart_call_prepare(task); |
ec06c096 | 3542 | return -EAGAIN; |
1da177e4 | 3543 | } |
8850df99 | 3544 | |
d20581aa | 3545 | __nfs4_read_done_cb(data); |
1da177e4 | 3546 | if (task->tk_status > 0) |
ec06c096 TM |
3547 | renew_lease(server, data->timestamp); |
3548 | return 0; | |
1da177e4 LT |
3549 | } |
3550 | ||
cbdabc7f AA |
3551 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3552 | { | |
3553 | ||
3554 | dprintk("--> %s\n", __func__); | |
3555 | ||
3556 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3557 | return -EAGAIN; | |
3558 | ||
d20581aa BH |
3559 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3560 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3561 | } |
3562 | ||
bdc7f021 | 3563 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3564 | { |
1da177e4 | 3565 | data->timestamp = jiffies; |
cbdabc7f | 3566 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3567 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
9d12b216 | 3568 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
1da177e4 LT |
3569 | } |
3570 | ||
ea7c3303 BS |
3571 | static void nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) |
3572 | { | |
cd841605 | 3573 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
ea7c3303 BS |
3574 | &data->args.seq_args, |
3575 | &data->res.seq_res, | |
3576 | task)) | |
3577 | return; | |
3578 | rpc_call_start(task); | |
1da177e4 LT |
3579 | } |
3580 | ||
b029bc9b | 3581 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3582 | { |
cd841605 | 3583 | struct inode *inode = data->header->inode; |
1da177e4 | 3584 | |
9e33bed5 | 3585 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3586 | rpc_restart_call_prepare(task); |
788e7a89 | 3587 | return -EAGAIN; |
1da177e4 | 3588 | } |
4f9838c7 | 3589 | if (task->tk_status >= 0) { |
1da177e4 | 3590 | renew_lease(NFS_SERVER(inode), data->timestamp); |
5a37f851 | 3591 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); |
4f9838c7 | 3592 | } |
788e7a89 | 3593 | return 0; |
1da177e4 LT |
3594 | } |
3595 | ||
b029bc9b FI |
3596 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3597 | { | |
3598 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3599 | return -EAGAIN; | |
d20581aa BH |
3600 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3601 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3602 | } |
3603 | ||
5a37f851 TM |
3604 | static |
3605 | bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data) | |
a69aef14 | 3606 | { |
5a37f851 TM |
3607 | const struct nfs_pgio_header *hdr = data->header; |
3608 | ||
3609 | /* Don't request attributes for pNFS or O_DIRECT writes */ | |
3610 | if (data->ds_clp != NULL || hdr->dreq != NULL) | |
3611 | return false; | |
3612 | /* Otherwise, request attributes if and only if we don't hold | |
3613 | * a delegation | |
3614 | */ | |
011e2a7f | 3615 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 3616 | } |
a69aef14 | 3617 | |
bdc7f021 | 3618 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3619 | { |
cd841605 | 3620 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
bdc7f021 | 3621 | |
5a37f851 | 3622 | if (!nfs4_write_need_cache_consistency_data(data)) { |
7ffd1064 FI |
3623 | data->args.bitmask = NULL; |
3624 | data->res.fattr = NULL; | |
3625 | } else | |
3626 | data->args.bitmask = server->cache_consistency_bitmask; | |
5a37f851 | 3627 | |
b029bc9b FI |
3628 | if (!data->write_done_cb) |
3629 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3630 | data->res.server = server; |
1da177e4 LT |
3631 | data->timestamp = jiffies; |
3632 | ||
bdc7f021 | 3633 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
9d12b216 | 3634 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3635 | } |
3636 | ||
c6cb80d0 BS |
3637 | static void nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) |
3638 | { | |
cd841605 | 3639 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
c6cb80d0 BS |
3640 | &data->args.seq_args, |
3641 | &data->res.seq_res, | |
3642 | task)) | |
3643 | return; | |
3644 | rpc_call_start(task); | |
1da177e4 LT |
3645 | } |
3646 | ||
0b7c0153 | 3647 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 BS |
3648 | { |
3649 | if (nfs4_setup_sequence(NFS_SERVER(data->inode), | |
3650 | &data->args.seq_args, | |
3651 | &data->res.seq_res, | |
3652 | task)) | |
3653 | return; | |
3654 | rpc_call_start(task); | |
1da177e4 LT |
3655 | } |
3656 | ||
0b7c0153 | 3657 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 3658 | { |
1da177e4 | 3659 | struct inode *inode = data->inode; |
14516c3a | 3660 | |
9e33bed5 | 3661 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 3662 | rpc_restart_call_prepare(task); |
788e7a89 | 3663 | return -EAGAIN; |
1da177e4 | 3664 | } |
788e7a89 | 3665 | return 0; |
1da177e4 LT |
3666 | } |
3667 | ||
0b7c0153 | 3668 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
3669 | { |
3670 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3671 | return -EAGAIN; | |
0b7c0153 | 3672 | return data->commit_done_cb(task, data); |
5f452431 FI |
3673 | } |
3674 | ||
0b7c0153 | 3675 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 3676 | { |
788e7a89 | 3677 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 3678 | |
0b7c0153 FI |
3679 | if (data->commit_done_cb == NULL) |
3680 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 3681 | data->res.server = server; |
bdc7f021 | 3682 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
9d12b216 | 3683 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3684 | } |
3685 | ||
9bc4e3ca CL |
3686 | struct nfs4_renewdata { |
3687 | struct nfs_client *client; | |
3688 | unsigned long timestamp; | |
3689 | }; | |
3690 | ||
1da177e4 LT |
3691 | /* |
3692 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3693 | * standalone procedure for queueing an asynchronous RENEW. | |
3694 | */ | |
9bc4e3ca | 3695 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3696 | { |
9bc4e3ca CL |
3697 | struct nfs4_renewdata *data = calldata; |
3698 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3699 | |
0851de06 AB |
3700 | if (atomic_read(&clp->cl_count) > 1) |
3701 | nfs4_schedule_state_renewal(clp); | |
3702 | nfs_put_client(clp); | |
9bc4e3ca | 3703 | kfree(data); |
dc96aef9 AB |
3704 | } |
3705 | ||
9bc4e3ca | 3706 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3707 | { |
9bc4e3ca CL |
3708 | struct nfs4_renewdata *data = calldata; |
3709 | struct nfs_client *clp = data->client; | |
3710 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3711 | |
3712 | if (task->tk_status < 0) { | |
95baa25c | 3713 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
3714 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
3715 | return; | |
3716 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 3717 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
3718 | return; |
3719 | } | |
3720 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 3721 | } |
452e9352 | 3722 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3723 | } |
3724 | ||
963d8fe5 TM |
3725 | static const struct rpc_call_ops nfs4_renew_ops = { |
3726 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3727 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3728 | }; |
3729 | ||
2f60ea6b | 3730 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
3731 | { |
3732 | struct rpc_message msg = { | |
3733 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3734 | .rpc_argp = clp, | |
b4454fe1 | 3735 | .rpc_cred = cred, |
1da177e4 | 3736 | }; |
9bc4e3ca | 3737 | struct nfs4_renewdata *data; |
1da177e4 | 3738 | |
2f60ea6b TM |
3739 | if (renew_flags == 0) |
3740 | return 0; | |
0851de06 AB |
3741 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3742 | return -EIO; | |
b569ad34 | 3743 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
3744 | if (data == NULL) |
3745 | return -ENOMEM; | |
3746 | data->client = clp; | |
3747 | data->timestamp = jiffies; | |
1da177e4 | 3748 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3749 | &nfs4_renew_ops, data); |
1da177e4 LT |
3750 | } |
3751 | ||
8534d4ec | 3752 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3753 | { |
3754 | struct rpc_message msg = { | |
3755 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3756 | .rpc_argp = clp, | |
b4454fe1 | 3757 | .rpc_cred = cred, |
1da177e4 LT |
3758 | }; |
3759 | unsigned long now = jiffies; | |
3760 | int status; | |
3761 | ||
3762 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3763 | if (status < 0) | |
3764 | return status; | |
452e9352 | 3765 | do_renew_lease(clp, now); |
1da177e4 LT |
3766 | return 0; |
3767 | } | |
3768 | ||
aa1870af BF |
3769 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3770 | { | |
3771 | return (server->caps & NFS_CAP_ACLS) | |
3772 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3773 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3774 | } | |
3775 | ||
21f498c2 TM |
3776 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
3777 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
3778 | * the stack. |
3779 | */ | |
21f498c2 | 3780 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 3781 | |
e9e3d724 NH |
3782 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3783 | struct page **pages, unsigned int *pgbase) | |
3784 | { | |
3785 | struct page *newpage, **spages; | |
3786 | int rc = 0; | |
3787 | size_t len; | |
3788 | spages = pages; | |
3789 | ||
3790 | do { | |
21f498c2 | 3791 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
3792 | newpage = alloc_page(GFP_KERNEL); |
3793 | ||
3794 | if (newpage == NULL) | |
3795 | goto unwind; | |
3796 | memcpy(page_address(newpage), buf, len); | |
3797 | buf += len; | |
3798 | buflen -= len; | |
3799 | *pages++ = newpage; | |
3800 | rc++; | |
3801 | } while (buflen != 0); | |
3802 | ||
3803 | return rc; | |
3804 | ||
3805 | unwind: | |
3806 | for(; rc > 0; rc--) | |
3807 | __free_page(spages[rc-1]); | |
3808 | return -ENOMEM; | |
3809 | } | |
3810 | ||
e50a1c2e BF |
3811 | struct nfs4_cached_acl { |
3812 | int cached; | |
3813 | size_t len; | |
3e9d4154 | 3814 | char data[0]; |
e50a1c2e BF |
3815 | }; |
3816 | ||
3817 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3818 | { | |
3819 | struct nfs_inode *nfsi = NFS_I(inode); | |
3820 | ||
3821 | spin_lock(&inode->i_lock); | |
3822 | kfree(nfsi->nfs4_acl); | |
3823 | nfsi->nfs4_acl = acl; | |
3824 | spin_unlock(&inode->i_lock); | |
3825 | } | |
3826 | ||
3827 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3828 | { | |
3829 | nfs4_set_cached_acl(inode, NULL); | |
3830 | } | |
3831 | ||
3832 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3833 | { | |
3834 | struct nfs_inode *nfsi = NFS_I(inode); | |
3835 | struct nfs4_cached_acl *acl; | |
3836 | int ret = -ENOENT; | |
3837 | ||
3838 | spin_lock(&inode->i_lock); | |
3839 | acl = nfsi->nfs4_acl; | |
3840 | if (acl == NULL) | |
3841 | goto out; | |
3842 | if (buf == NULL) /* user is just asking for length */ | |
3843 | goto out_len; | |
3844 | if (acl->cached == 0) | |
3845 | goto out; | |
3846 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3847 | if (acl->len > buflen) | |
3848 | goto out; | |
3849 | memcpy(buf, acl->data, acl->len); | |
3850 | out_len: | |
3851 | ret = acl->len; | |
3852 | out: | |
3853 | spin_unlock(&inode->i_lock); | |
3854 | return ret; | |
3855 | } | |
3856 | ||
5794d21e | 3857 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
3858 | { |
3859 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 3860 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 3861 | |
1f1ea6c2 | 3862 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 3863 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
3864 | if (acl == NULL) |
3865 | goto out; | |
3866 | acl->cached = 1; | |
5794d21e | 3867 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
3868 | } else { |
3869 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3870 | if (acl == NULL) | |
3871 | goto out; | |
3872 | acl->cached = 0; | |
3873 | } | |
3874 | acl->len = acl_len; | |
3875 | out: | |
3876 | nfs4_set_cached_acl(inode, acl); | |
3877 | } | |
3878 | ||
bf118a34 AA |
3879 | /* |
3880 | * The getxattr API returns the required buffer length when called with a | |
3881 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
3882 | * the required buf. On a NULL buf, we send a page of data to the server | |
3883 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
3884 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
3885 | * the cache. If not so, we throw away the page, and cache the required | |
3886 | * length. The next getxattr call will then produce another round trip to | |
3887 | * the server, this time with the input buf of the required size. | |
3888 | */ | |
16b4289c | 3889 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3890 | { |
bf118a34 | 3891 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
3892 | struct nfs_getaclargs args = { |
3893 | .fh = NFS_FH(inode), | |
3894 | .acl_pages = pages, | |
3895 | .acl_len = buflen, | |
3896 | }; | |
663c79b3 BH |
3897 | struct nfs_getaclres res = { |
3898 | .acl_len = buflen, | |
3899 | }; | |
aa1870af BF |
3900 | struct rpc_message msg = { |
3901 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3902 | .rpc_argp = &args, | |
663c79b3 | 3903 | .rpc_resp = &res, |
aa1870af | 3904 | }; |
21f498c2 TM |
3905 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
3906 | int ret = -ENOMEM, i; | |
aa1870af | 3907 | |
bf118a34 AA |
3908 | /* As long as we're doing a round trip to the server anyway, |
3909 | * let's be prepared for a page of acl data. */ | |
3910 | if (npages == 0) | |
3911 | npages = 1; | |
21f498c2 TM |
3912 | if (npages > ARRAY_SIZE(pages)) |
3913 | return -ERANGE; | |
5a006899 | 3914 | |
bf118a34 AA |
3915 | for (i = 0; i < npages; i++) { |
3916 | pages[i] = alloc_page(GFP_KERNEL); | |
3917 | if (!pages[i]) | |
3918 | goto out_free; | |
e50a1c2e | 3919 | } |
5a006899 SP |
3920 | |
3921 | /* for decoding across pages */ | |
3922 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
3923 | if (!res.acl_scratch) | |
3924 | goto out_free; | |
3925 | ||
bf118a34 AA |
3926 | args.acl_len = npages * PAGE_SIZE; |
3927 | args.acl_pgbase = 0; | |
5a006899 | 3928 | |
de040bec | 3929 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
3930 | __func__, buf, buflen, npages, args.acl_len); |
3931 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
3932 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
3933 | if (ret) |
3934 | goto out_free; | |
bf118a34 | 3935 | |
1f1ea6c2 TM |
3936 | /* Handle the case where the passed-in buffer is too short */ |
3937 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
3938 | /* Did the user only issue a request for the acl length? */ | |
3939 | if (buf == NULL) | |
3940 | goto out_ok; | |
e50a1c2e | 3941 | ret = -ERANGE; |
1f1ea6c2 | 3942 | goto out_free; |
e50a1c2e | 3943 | } |
1f1ea6c2 TM |
3944 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
3945 | if (buf) | |
3946 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); | |
3947 | out_ok: | |
3948 | ret = res.acl_len; | |
e50a1c2e | 3949 | out_free: |
bf118a34 AA |
3950 | for (i = 0; i < npages; i++) |
3951 | if (pages[i]) | |
3952 | __free_page(pages[i]); | |
331818f1 TM |
3953 | if (res.acl_scratch) |
3954 | __free_page(res.acl_scratch); | |
aa1870af BF |
3955 | return ret; |
3956 | } | |
3957 | ||
16b4289c TM |
3958 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3959 | { | |
3960 | struct nfs4_exception exception = { }; | |
3961 | ssize_t ret; | |
3962 | do { | |
3963 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3964 | if (ret >= 0) | |
3965 | break; | |
3966 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3967 | } while (exception.retry); | |
3968 | return ret; | |
3969 | } | |
3970 | ||
e50a1c2e BF |
3971 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3972 | { | |
3973 | struct nfs_server *server = NFS_SERVER(inode); | |
3974 | int ret; | |
3975 | ||
3976 | if (!nfs4_server_supports_acls(server)) | |
3977 | return -EOPNOTSUPP; | |
3978 | ret = nfs_revalidate_inode(server, inode); | |
3979 | if (ret < 0) | |
3980 | return ret; | |
08a22b39 AK |
3981 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
3982 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
3983 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
3984 | if (ret != -ENOENT) | |
bf118a34 AA |
3985 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
3986 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
3987 | return ret; |
3988 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3989 | } | |
3990 | ||
16b4289c | 3991 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3992 | { |
3993 | struct nfs_server *server = NFS_SERVER(inode); | |
3994 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3995 | struct nfs_setaclargs arg = { | |
3996 | .fh = NFS_FH(inode), | |
3997 | .acl_pages = pages, | |
3998 | .acl_len = buflen, | |
3999 | }; | |
73c403a9 | 4000 | struct nfs_setaclres res; |
4b580ee3 BF |
4001 | struct rpc_message msg = { |
4002 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
4003 | .rpc_argp = &arg, | |
73c403a9 | 4004 | .rpc_resp = &res, |
4b580ee3 | 4005 | }; |
21f498c2 | 4006 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 4007 | int ret, i; |
4b580ee3 BF |
4008 | |
4009 | if (!nfs4_server_supports_acls(server)) | |
4010 | return -EOPNOTSUPP; | |
21f498c2 TM |
4011 | if (npages > ARRAY_SIZE(pages)) |
4012 | return -ERANGE; | |
e9e3d724 NH |
4013 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
4014 | if (i < 0) | |
4015 | return i; | |
57ec14c5 | 4016 | nfs4_inode_return_delegation(inode); |
7c513058 | 4017 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
4018 | |
4019 | /* | |
4020 | * Free each page after tx, so the only ref left is | |
4021 | * held by the network stack | |
4022 | */ | |
4023 | for (; i > 0; i--) | |
4024 | put_page(pages[i-1]); | |
4025 | ||
08a22b39 AK |
4026 | /* |
4027 | * Acl update can result in inode attribute update. | |
4028 | * so mark the attribute cache invalid. | |
4029 | */ | |
4030 | spin_lock(&inode->i_lock); | |
4031 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
4032 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
4033 | nfs_access_zap_cache(inode); |
4034 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
4035 | return ret; |
4036 | } | |
4037 | ||
16b4289c TM |
4038 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4039 | { | |
4040 | struct nfs4_exception exception = { }; | |
4041 | int err; | |
4042 | do { | |
4043 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
4044 | __nfs4_proc_set_acl(inode, buf, buflen), | |
4045 | &exception); | |
4046 | } while (exception.retry); | |
4047 | return err; | |
4048 | } | |
4049 | ||
1da177e4 | 4050 | static int |
aa5190d0 | 4051 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 4052 | { |
aa5190d0 TM |
4053 | struct nfs_client *clp = server->nfs_client; |
4054 | ||
4055 | if (task->tk_status >= 0) | |
1da177e4 LT |
4056 | return 0; |
4057 | switch(task->tk_status) { | |
a1d0b5ee | 4058 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
4059 | case -NFS4ERR_ADMIN_REVOKED: |
4060 | case -NFS4ERR_BAD_STATEID: | |
14977489 TM |
4061 | if (state == NULL) |
4062 | break; | |
4063 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
4064 | case -NFS4ERR_OPENMODE: |
4065 | if (state == NULL) | |
4066 | break; | |
0400a6b0 TM |
4067 | nfs4_schedule_stateid_recovery(server, state); |
4068 | goto wait_on_recovery; | |
0ced63d1 TM |
4069 | case -NFS4ERR_EXPIRED: |
4070 | if (state != NULL) | |
4071 | nfs4_schedule_stateid_recovery(server, state); | |
1da177e4 | 4072 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 4073 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
4074 | nfs4_schedule_lease_recovery(clp); |
4075 | goto wait_on_recovery; | |
4745e315 AA |
4076 | #if defined(CONFIG_NFS_V4_1) |
4077 | case -NFS4ERR_BADSESSION: | |
4078 | case -NFS4ERR_BADSLOT: | |
4079 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4080 | case -NFS4ERR_DEADSESSION: | |
4081 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4082 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
4083 | case -NFS4ERR_SEQ_MISORDERED: | |
4084 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
4085 | task->tk_status); | |
9f594791 | 4086 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); |
4745e315 AA |
4087 | task->tk_status = 0; |
4088 | return -EAGAIN; | |
4089 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 4090 | case -NFS4ERR_DELAY: |
aa5190d0 | 4091 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 4092 | case -NFS4ERR_GRACE: |
2c643488 | 4093 | case -EKEYEXPIRED: |
1da177e4 LT |
4094 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
4095 | task->tk_status = 0; | |
4096 | return -EAGAIN; | |
a8a4ae3a | 4097 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
4098 | case -NFS4ERR_OLD_STATEID: |
4099 | task->tk_status = 0; | |
4100 | return -EAGAIN; | |
4101 | } | |
4102 | task->tk_status = nfs4_map_errors(task->tk_status); | |
4103 | return 0; | |
0400a6b0 | 4104 | wait_on_recovery: |
a2c0b9e2 | 4105 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
4106 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
4107 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
4108 | task->tk_status = 0; | |
4109 | return -EAGAIN; | |
1da177e4 LT |
4110 | } |
4111 | ||
f092075d CL |
4112 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
4113 | nfs4_verifier *bootverf) | |
cd93710e CL |
4114 | { |
4115 | __be32 verf[2]; | |
4116 | ||
2c820d9a CL |
4117 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
4118 | /* An impossible timestamp guarantees this value | |
4119 | * will never match a generated boot time. */ | |
4120 | verf[0] = 0; | |
4121 | verf[1] = (__be32)(NSEC_PER_SEC + 1); | |
4122 | } else { | |
f092075d CL |
4123 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
4124 | verf[0] = (__be32)nn->boot_time.tv_sec; | |
4125 | verf[1] = (__be32)nn->boot_time.tv_nsec; | |
2c820d9a | 4126 | } |
cd93710e CL |
4127 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
4128 | } | |
4129 | ||
e984a55a CL |
4130 | static unsigned int |
4131 | nfs4_init_nonuniform_client_string(const struct nfs_client *clp, | |
4132 | char *buf, size_t len) | |
4133 | { | |
4134 | unsigned int result; | |
4135 | ||
4136 | rcu_read_lock(); | |
4137 | result = scnprintf(buf, len, "Linux NFSv4.0 %s/%s %s", | |
4138 | clp->cl_ipaddr, | |
4139 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4140 | RPC_DISPLAY_ADDR), | |
4141 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4142 | RPC_DISPLAY_PROTO)); | |
4143 | rcu_read_unlock(); | |
4144 | return result; | |
4145 | } | |
4146 | ||
4147 | static unsigned int | |
4148 | nfs4_init_uniform_client_string(const struct nfs_client *clp, | |
4149 | char *buf, size_t len) | |
4150 | { | |
6f2ea7f2 CL |
4151 | char *nodename = clp->cl_rpcclient->cl_nodename; |
4152 | ||
4153 | if (nfs4_client_id_uniquifier[0] != '\0') | |
4154 | nodename = nfs4_client_id_uniquifier; | |
e984a55a CL |
4155 | return scnprintf(buf, len, "Linux NFSv%u.%u %s", |
4156 | clp->rpc_ops->version, clp->cl_minorversion, | |
6f2ea7f2 | 4157 | nodename); |
e984a55a CL |
4158 | } |
4159 | ||
6bbb4ae8 CL |
4160 | /** |
4161 | * nfs4_proc_setclientid - Negotiate client ID | |
4162 | * @clp: state data structure | |
4163 | * @program: RPC program for NFSv4 callback service | |
4164 | * @port: IP port number for NFS4 callback service | |
4165 | * @cred: RPC credential to use for this call | |
4166 | * @res: where to place the result | |
4167 | * | |
4168 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4169 | */ | |
bb8b27e5 TM |
4170 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
4171 | unsigned short port, struct rpc_cred *cred, | |
4172 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
4173 | { |
4174 | nfs4_verifier sc_verifier; | |
4175 | struct nfs4_setclientid setclientid = { | |
4176 | .sc_verifier = &sc_verifier, | |
4177 | .sc_prog = program, | |
f4eecd5d | 4178 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
4179 | }; |
4180 | struct rpc_message msg = { | |
4181 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
4182 | .rpc_argp = &setclientid, | |
bb8b27e5 | 4183 | .rpc_resp = res, |
286d7d6a | 4184 | .rpc_cred = cred, |
1da177e4 | 4185 | }; |
6bbb4ae8 | 4186 | int status; |
1da177e4 | 4187 | |
de734831 | 4188 | /* nfs_client_id4 */ |
f092075d | 4189 | nfs4_init_boot_verifier(clp, &sc_verifier); |
e984a55a CL |
4190 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) |
4191 | setclientid.sc_name_len = | |
4192 | nfs4_init_uniform_client_string(clp, | |
4193 | setclientid.sc_name, | |
4194 | sizeof(setclientid.sc_name)); | |
4195 | else | |
4196 | setclientid.sc_name_len = | |
4197 | nfs4_init_nonuniform_client_string(clp, | |
4198 | setclientid.sc_name, | |
4199 | sizeof(setclientid.sc_name)); | |
de734831 | 4200 | /* cb_client4 */ |
e984a55a | 4201 | rcu_read_lock(); |
de734831 | 4202 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, |
d4d3c507 CL |
4203 | sizeof(setclientid.sc_netid), |
4204 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4205 | RPC_DISPLAY_NETID)); | |
de734831 CL |
4206 | rcu_read_unlock(); |
4207 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, | |
d4d3c507 | 4208 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
4209 | clp->cl_ipaddr, port >> 8, port & 255); |
4210 | ||
6bbb4ae8 CL |
4211 | dprintk("NFS call setclientid auth=%s, '%.*s'\n", |
4212 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4213 | setclientid.sc_name_len, setclientid.sc_name); | |
4214 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
4215 | dprintk("NFS reply setclientid: %d\n", status); | |
4216 | return status; | |
1da177e4 LT |
4217 | } |
4218 | ||
6bbb4ae8 CL |
4219 | /** |
4220 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
4221 | * @clp: state data structure | |
4222 | * @res: result of a previous SETCLIENTID | |
4223 | * @cred: RPC credential to use for this call | |
4224 | * | |
4225 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4226 | */ | |
fd954ae1 | 4227 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
4228 | struct nfs4_setclientid_res *arg, |
4229 | struct rpc_cred *cred) | |
1da177e4 LT |
4230 | { |
4231 | struct nfs_fsinfo fsinfo; | |
4232 | struct rpc_message msg = { | |
4233 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 4234 | .rpc_argp = arg, |
1da177e4 | 4235 | .rpc_resp = &fsinfo, |
286d7d6a | 4236 | .rpc_cred = cred, |
1da177e4 LT |
4237 | }; |
4238 | unsigned long now; | |
4239 | int status; | |
4240 | ||
6bbb4ae8 CL |
4241 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
4242 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4243 | clp->cl_clientid); | |
1da177e4 | 4244 | now = jiffies; |
1bd714f2 | 4245 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4246 | if (status == 0) { |
4247 | spin_lock(&clp->cl_lock); | |
4248 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
4249 | clp->cl_last_renewal = now; | |
4250 | spin_unlock(&clp->cl_lock); | |
4251 | } | |
6bbb4ae8 | 4252 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
4253 | return status; |
4254 | } | |
4255 | ||
fe650407 TM |
4256 | struct nfs4_delegreturndata { |
4257 | struct nfs4_delegreturnargs args; | |
fa178f29 | 4258 | struct nfs4_delegreturnres res; |
fe650407 TM |
4259 | struct nfs_fh fh; |
4260 | nfs4_stateid stateid; | |
26e976a8 | 4261 | unsigned long timestamp; |
fa178f29 | 4262 | struct nfs_fattr fattr; |
fe650407 TM |
4263 | int rpc_status; |
4264 | }; | |
4265 | ||
fe650407 TM |
4266 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
4267 | { | |
4268 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 4269 | |
14516c3a TM |
4270 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4271 | return; | |
938e1010 | 4272 | |
79708861 RL |
4273 | switch (task->tk_status) { |
4274 | case -NFS4ERR_STALE_STATEID: | |
4275 | case -NFS4ERR_EXPIRED: | |
4276 | case 0: | |
fa178f29 | 4277 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
4278 | break; |
4279 | default: | |
4280 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
4281 | -EAGAIN) { | |
d00c5d43 | 4282 | rpc_restart_call_prepare(task); |
79708861 RL |
4283 | return; |
4284 | } | |
4285 | } | |
4286 | data->rpc_status = task->tk_status; | |
fe650407 TM |
4287 | } |
4288 | ||
4289 | static void nfs4_delegreturn_release(void *calldata) | |
4290 | { | |
fe650407 TM |
4291 | kfree(calldata); |
4292 | } | |
4293 | ||
938e1010 AA |
4294 | #if defined(CONFIG_NFS_V4_1) |
4295 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
4296 | { | |
4297 | struct nfs4_delegreturndata *d_data; | |
4298 | ||
4299 | d_data = (struct nfs4_delegreturndata *)data; | |
4300 | ||
035168ab | 4301 | if (nfs4_setup_sequence(d_data->res.server, |
938e1010 | 4302 | &d_data->args.seq_args, |
9d12b216 | 4303 | &d_data->res.seq_res, task)) |
938e1010 AA |
4304 | return; |
4305 | rpc_call_start(task); | |
4306 | } | |
4307 | #endif /* CONFIG_NFS_V4_1 */ | |
4308 | ||
c8d149f3 | 4309 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
4310 | #if defined(CONFIG_NFS_V4_1) |
4311 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
4312 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
4313 | .rpc_call_done = nfs4_delegreturn_done, |
4314 | .rpc_release = nfs4_delegreturn_release, | |
4315 | }; | |
4316 | ||
e6f81075 | 4317 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
4318 | { |
4319 | struct nfs4_delegreturndata *data; | |
fa178f29 | 4320 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 4321 | struct rpc_task *task; |
5138fde0 TM |
4322 | struct rpc_message msg = { |
4323 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
4324 | .rpc_cred = cred, | |
4325 | }; | |
c970aa85 TM |
4326 | struct rpc_task_setup task_setup_data = { |
4327 | .rpc_client = server->client, | |
5138fde0 | 4328 | .rpc_message = &msg, |
c970aa85 TM |
4329 | .callback_ops = &nfs4_delegreturn_ops, |
4330 | .flags = RPC_TASK_ASYNC, | |
4331 | }; | |
e6f81075 | 4332 | int status = 0; |
fe650407 | 4333 | |
8535b2be | 4334 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
4335 | if (data == NULL) |
4336 | return -ENOMEM; | |
9d12b216 | 4337 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
4338 | data->args.fhandle = &data->fh; |
4339 | data->args.stateid = &data->stateid; | |
9e907fec | 4340 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 4341 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 4342 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
4343 | data->res.fattr = &data->fattr; |
4344 | data->res.server = server; | |
5138fde0 | 4345 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 4346 | data->timestamp = jiffies; |
fe650407 TM |
4347 | data->rpc_status = 0; |
4348 | ||
c970aa85 | 4349 | task_setup_data.callback_data = data; |
1174dd1f TM |
4350 | msg.rpc_argp = &data->args; |
4351 | msg.rpc_resp = &data->res; | |
c970aa85 | 4352 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4353 | if (IS_ERR(task)) |
fe650407 | 4354 | return PTR_ERR(task); |
e6f81075 TM |
4355 | if (!issync) |
4356 | goto out; | |
fe650407 | 4357 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
4358 | if (status != 0) |
4359 | goto out; | |
4360 | status = data->rpc_status; | |
e144cbcc TM |
4361 | if (status == 0) |
4362 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
4363 | else | |
4364 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 4365 | out: |
e6b3c4db | 4366 | rpc_put_task(task); |
fe650407 | 4367 | return status; |
1da177e4 LT |
4368 | } |
4369 | ||
e6f81075 | 4370 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
4371 | { |
4372 | struct nfs_server *server = NFS_SERVER(inode); | |
4373 | struct nfs4_exception exception = { }; | |
4374 | int err; | |
4375 | do { | |
e6f81075 | 4376 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
4377 | switch (err) { |
4378 | case -NFS4ERR_STALE_STATEID: | |
4379 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
4380 | case 0: |
4381 | return 0; | |
4382 | } | |
4383 | err = nfs4_handle_exception(server, err, &exception); | |
4384 | } while (exception.retry); | |
4385 | return err; | |
4386 | } | |
4387 | ||
4388 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
4389 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
4390 | ||
4391 | /* | |
4392 | * sleep, with exponential backoff, and retry the LOCK operation. | |
4393 | */ | |
4394 | static unsigned long | |
4395 | nfs4_set_lock_task_retry(unsigned long timeout) | |
4396 | { | |
d310310c | 4397 | freezable_schedule_timeout_killable(timeout); |
1da177e4 LT |
4398 | timeout <<= 1; |
4399 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
4400 | return NFS4_LOCK_MAXTIMEOUT; | |
4401 | return timeout; | |
4402 | } | |
4403 | ||
1da177e4 LT |
4404 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4405 | { | |
4406 | struct inode *inode = state->inode; | |
4407 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 4408 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 4409 | struct nfs_lockt_args arg = { |
1da177e4 | 4410 | .fh = NFS_FH(inode), |
911d1aaf | 4411 | .fl = request, |
1da177e4 | 4412 | }; |
911d1aaf TM |
4413 | struct nfs_lockt_res res = { |
4414 | .denied = request, | |
1da177e4 LT |
4415 | }; |
4416 | struct rpc_message msg = { | |
4417 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
4418 | .rpc_argp = &arg, | |
4419 | .rpc_resp = &res, | |
4420 | .rpc_cred = state->owner->so_cred, | |
4421 | }; | |
1da177e4 LT |
4422 | struct nfs4_lock_state *lsp; |
4423 | int status; | |
4424 | ||
911d1aaf | 4425 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
4426 | status = nfs4_set_lock_state(state, request); |
4427 | if (status != 0) | |
4428 | goto out; | |
4429 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 4430 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4431 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 4432 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
4433 | switch (status) { |
4434 | case 0: | |
4435 | request->fl_type = F_UNLCK; | |
4436 | break; | |
4437 | case -NFS4ERR_DENIED: | |
4438 | status = 0; | |
1da177e4 | 4439 | } |
70cc6487 | 4440 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 4441 | out: |
1da177e4 LT |
4442 | return status; |
4443 | } | |
4444 | ||
4445 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4446 | { | |
4447 | struct nfs4_exception exception = { }; | |
4448 | int err; | |
4449 | ||
4450 | do { | |
4451 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
4452 | _nfs4_proc_getlk(state, cmd, request), | |
4453 | &exception); | |
4454 | } while (exception.retry); | |
4455 | return err; | |
4456 | } | |
4457 | ||
4458 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4459 | { | |
4460 | int res = 0; | |
4461 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4462 | case FL_POSIX: | |
4463 | res = posix_lock_file_wait(file, fl); | |
4464 | break; | |
4465 | case FL_FLOCK: | |
4466 | res = flock_lock_file_wait(file, fl); | |
4467 | break; | |
4468 | default: | |
4469 | BUG(); | |
4470 | } | |
1da177e4 LT |
4471 | return res; |
4472 | } | |
4473 | ||
faf5f49c | 4474 | struct nfs4_unlockdata { |
911d1aaf TM |
4475 | struct nfs_locku_args arg; |
4476 | struct nfs_locku_res res; | |
faf5f49c TM |
4477 | struct nfs4_lock_state *lsp; |
4478 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4479 | struct file_lock fl; |
4480 | const struct nfs_server *server; | |
26e976a8 | 4481 | unsigned long timestamp; |
faf5f49c TM |
4482 | }; |
4483 | ||
911d1aaf TM |
4484 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
4485 | struct nfs_open_context *ctx, | |
4486 | struct nfs4_lock_state *lsp, | |
4487 | struct nfs_seqid *seqid) | |
4488 | { | |
4489 | struct nfs4_unlockdata *p; | |
4490 | struct inode *inode = lsp->ls_state->inode; | |
4491 | ||
8535b2be | 4492 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
4493 | if (p == NULL) |
4494 | return NULL; | |
4495 | p->arg.fh = NFS_FH(inode); | |
4496 | p->arg.fl = &p->fl; | |
4497 | p->arg.seqid = seqid; | |
c1d51931 | 4498 | p->res.seqid = seqid; |
911d1aaf TM |
4499 | p->arg.stateid = &lsp->ls_stateid; |
4500 | p->lsp = lsp; | |
4501 | atomic_inc(&lsp->ls_count); | |
4502 | /* Ensure we don't close file until we're done freeing locks! */ | |
4503 | p->ctx = get_nfs_open_context(ctx); | |
4504 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4505 | p->server = NFS_SERVER(inode); | |
4506 | return p; | |
4507 | } | |
4508 | ||
06f814a3 | 4509 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 4510 | { |
963d8fe5 | 4511 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 4512 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
4513 | nfs4_put_lock_state(calldata->lsp); |
4514 | put_nfs_open_context(calldata->ctx); | |
4515 | kfree(calldata); | |
faf5f49c TM |
4516 | } |
4517 | ||
963d8fe5 | 4518 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 4519 | { |
963d8fe5 | 4520 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4521 | |
14516c3a TM |
4522 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
4523 | return; | |
faf5f49c TM |
4524 | switch (task->tk_status) { |
4525 | case 0: | |
f597c537 TM |
4526 | nfs4_stateid_copy(&calldata->lsp->ls_stateid, |
4527 | &calldata->res.stateid); | |
26e976a8 | 4528 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 4529 | break; |
9e33bed5 TM |
4530 | case -NFS4ERR_BAD_STATEID: |
4531 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4532 | case -NFS4ERR_STALE_STATEID: |
4533 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4534 | break; |
4535 | default: | |
9e33bed5 | 4536 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 4537 | rpc_restart_call_prepare(task); |
faf5f49c | 4538 | } |
2b1bc308 | 4539 | nfs_release_seqid(calldata->arg.seqid); |
faf5f49c TM |
4540 | } |
4541 | ||
4ce70ada | 4542 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4543 | { |
4ce70ada | 4544 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4545 | |
911d1aaf | 4546 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c | 4547 | return; |
795a88c9 | 4548 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 TM |
4549 | /* Note: exit _without_ running nfs4_locku_done */ |
4550 | task->tk_action = NULL; | |
faf5f49c TM |
4551 | return; |
4552 | } | |
26e976a8 | 4553 | calldata->timestamp = jiffies; |
035168ab | 4554 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 4555 | &calldata->arg.seq_args, |
2240a9e2 TM |
4556 | &calldata->res.seq_res, |
4557 | task) != 0) | |
4558 | nfs_release_seqid(calldata->arg.seqid); | |
4559 | else | |
4560 | rpc_call_start(task); | |
faf5f49c TM |
4561 | } |
4562 | ||
963d8fe5 | 4563 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4564 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4565 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4566 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4567 | }; |
4568 | ||
a5d16a4d TM |
4569 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4570 | struct nfs_open_context *ctx, | |
4571 | struct nfs4_lock_state *lsp, | |
4572 | struct nfs_seqid *seqid) | |
4573 | { | |
4574 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4575 | struct rpc_message msg = { |
4576 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4577 | .rpc_cred = ctx->cred, | |
4578 | }; | |
c970aa85 TM |
4579 | struct rpc_task_setup task_setup_data = { |
4580 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4581 | .rpc_message = &msg, |
c970aa85 | 4582 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4583 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4584 | .flags = RPC_TASK_ASYNC, |
4585 | }; | |
a5d16a4d | 4586 | |
137d6aca FF |
4587 | /* Ensure this is an unlock - when canceling a lock, the |
4588 | * canceled lock is passed in, and it won't be an unlock. | |
4589 | */ | |
4590 | fl->fl_type = F_UNLCK; | |
4591 | ||
a5d16a4d TM |
4592 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4593 | if (data == NULL) { | |
4594 | nfs_free_seqid(seqid); | |
4595 | return ERR_PTR(-ENOMEM); | |
4596 | } | |
4597 | ||
9d12b216 | 4598 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4599 | msg.rpc_argp = &data->arg; |
4600 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4601 | task_setup_data.callback_data = data; |
4602 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4603 | } |
4604 | ||
faf5f49c TM |
4605 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4606 | { | |
19e03c57 | 4607 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 4608 | struct nfs_seqid *seqid; |
1da177e4 | 4609 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4610 | struct rpc_task *task; |
4611 | int status = 0; | |
536ff0f8 | 4612 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4613 | |
8d0a8a9d | 4614 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4615 | /* Unlock _before_ we do the RPC call */ |
4616 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
4617 | down_read(&nfsi->rwsem); |
4618 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4619 | up_read(&nfsi->rwsem); | |
9b073574 | 4620 | goto out; |
19e03c57 TM |
4621 | } |
4622 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 4623 | if (status != 0) |
9b073574 TM |
4624 | goto out; |
4625 | /* Is this a delegated lock? */ | |
4626 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
4627 | goto out; | |
8d0a8a9d | 4628 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 4629 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4630 | status = -ENOMEM; |
911d1aaf | 4631 | if (seqid == NULL) |
9b073574 | 4632 | goto out; |
cd3758e3 | 4633 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4634 | status = PTR_ERR(task); |
4635 | if (IS_ERR(task)) | |
9b073574 | 4636 | goto out; |
a5d16a4d | 4637 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4638 | rpc_put_task(task); |
9b073574 | 4639 | out: |
536ff0f8 | 4640 | request->fl_flags = fl_flags; |
1da177e4 LT |
4641 | return status; |
4642 | } | |
4643 | ||
a5d16a4d TM |
4644 | struct nfs4_lockdata { |
4645 | struct nfs_lock_args arg; | |
4646 | struct nfs_lock_res res; | |
4647 | struct nfs4_lock_state *lsp; | |
4648 | struct nfs_open_context *ctx; | |
4649 | struct file_lock fl; | |
26e976a8 | 4650 | unsigned long timestamp; |
a5d16a4d TM |
4651 | int rpc_status; |
4652 | int cancelled; | |
66179efe | 4653 | struct nfs_server *server; |
a5d16a4d TM |
4654 | }; |
4655 | ||
4656 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4657 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4658 | gfp_t gfp_mask) | |
1da177e4 | 4659 | { |
a5d16a4d TM |
4660 | struct nfs4_lockdata *p; |
4661 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4662 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4663 | |
8535b2be | 4664 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4665 | if (p == NULL) |
4666 | return NULL; | |
4667 | ||
4668 | p->arg.fh = NFS_FH(inode); | |
4669 | p->arg.fl = &p->fl; | |
8535b2be | 4670 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4671 | if (p->arg.open_seqid == NULL) |
4672 | goto out_free; | |
8535b2be | 4673 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4674 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4675 | goto out_free_seqid; |
a5d16a4d | 4676 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4677 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 4678 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4679 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4680 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4681 | p->lsp = lsp; |
66179efe | 4682 | p->server = server; |
a5d16a4d TM |
4683 | atomic_inc(&lsp->ls_count); |
4684 | p->ctx = get_nfs_open_context(ctx); | |
4685 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4686 | return p; | |
2f74c0a0 TM |
4687 | out_free_seqid: |
4688 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4689 | out_free: |
4690 | kfree(p); | |
4691 | return NULL; | |
4692 | } | |
4693 | ||
4694 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4695 | { | |
4696 | struct nfs4_lockdata *data = calldata; | |
4697 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4698 | |
3110ff80 | 4699 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
4700 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
4701 | return; | |
a5d16a4d TM |
4702 | /* Do we need to do an open_to_lock_owner? */ |
4703 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 | 4704 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
2240a9e2 | 4705 | goto out_release_lock_seqid; |
a5d16a4d TM |
4706 | data->arg.open_stateid = &state->stateid; |
4707 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4708 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4709 | } else |
4710 | data->arg.new_lock_owner = 0; | |
26e976a8 | 4711 | data->timestamp = jiffies; |
035168ab TM |
4712 | if (nfs4_setup_sequence(data->server, |
4713 | &data->arg.seq_args, | |
2240a9e2 TM |
4714 | &data->res.seq_res, |
4715 | task) == 0) { | |
4716 | rpc_call_start(task); | |
66179efe | 4717 | return; |
2240a9e2 TM |
4718 | } |
4719 | nfs_release_seqid(data->arg.open_seqid); | |
4720 | out_release_lock_seqid: | |
4721 | nfs_release_seqid(data->arg.lock_seqid); | |
4722 | dprintk("%s: done!, ret = %d\n", __func__, task->tk_status); | |
a5d16a4d TM |
4723 | } |
4724 | ||
b257957e AB |
4725 | static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata) |
4726 | { | |
4727 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
4728 | nfs4_lock_prepare(task, calldata); | |
4729 | } | |
4730 | ||
a5d16a4d TM |
4731 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4732 | { | |
4733 | struct nfs4_lockdata *data = calldata; | |
4734 | ||
3110ff80 | 4735 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4736 | |
14516c3a TM |
4737 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4738 | return; | |
66179efe | 4739 | |
a5d16a4d | 4740 | data->rpc_status = task->tk_status; |
a5d16a4d | 4741 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4742 | if (data->rpc_status == 0) |
4743 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4744 | else | |
4745 | goto out; | |
4746 | } | |
4747 | if (data->rpc_status == 0) { | |
f597c537 | 4748 | nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); |
795a88c9 | 4749 | set_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags); |
3d4ff43d | 4750 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 4751 | } |
a5d16a4d | 4752 | out: |
3110ff80 | 4753 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4754 | } |
4755 | ||
4756 | static void nfs4_lock_release(void *calldata) | |
4757 | { | |
4758 | struct nfs4_lockdata *data = calldata; | |
4759 | ||
3110ff80 | 4760 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4761 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4762 | if (data->cancelled != 0) { |
4763 | struct rpc_task *task; | |
4764 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4765 | data->arg.lock_seqid); | |
4766 | if (!IS_ERR(task)) | |
bf294b41 | 4767 | rpc_put_task_async(task); |
3110ff80 | 4768 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4769 | } else |
4770 | nfs_free_seqid(data->arg.lock_seqid); | |
4771 | nfs4_put_lock_state(data->lsp); | |
4772 | put_nfs_open_context(data->ctx); | |
4773 | kfree(data); | |
3110ff80 | 4774 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4775 | } |
4776 | ||
4777 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4778 | .rpc_call_prepare = nfs4_lock_prepare, | |
4779 | .rpc_call_done = nfs4_lock_done, | |
4780 | .rpc_release = nfs4_lock_release, | |
4781 | }; | |
4782 | ||
b257957e AB |
4783 | static const struct rpc_call_ops nfs4_recover_lock_ops = { |
4784 | .rpc_call_prepare = nfs4_recover_lock_prepare, | |
4785 | .rpc_call_done = nfs4_lock_done, | |
4786 | .rpc_release = nfs4_lock_release, | |
4787 | }; | |
4788 | ||
2bee72a6 TM |
4789 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4790 | { | |
2bee72a6 TM |
4791 | switch (error) { |
4792 | case -NFS4ERR_ADMIN_REVOKED: | |
4793 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4794 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 4795 | if (new_lock_owner != 0 || |
795a88c9 | 4796 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 4797 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4798 | break; |
4799 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4800 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4801 | case -NFS4ERR_EXPIRED: |
4802 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4803 | }; |
4804 | } | |
4805 | ||
afe6c27c | 4806 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4807 | { |
4808 | struct nfs4_lockdata *data; | |
4809 | struct rpc_task *task; | |
5138fde0 TM |
4810 | struct rpc_message msg = { |
4811 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4812 | .rpc_cred = state->owner->so_cred, | |
4813 | }; | |
c970aa85 TM |
4814 | struct rpc_task_setup task_setup_data = { |
4815 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4816 | .rpc_message = &msg, |
c970aa85 | 4817 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4818 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4819 | .flags = RPC_TASK_ASYNC, |
4820 | }; | |
a5d16a4d TM |
4821 | int ret; |
4822 | ||
3110ff80 | 4823 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4824 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4825 | fl->fl_u.nfs4_fl.owner, |
4826 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4827 | if (data == NULL) |
4828 | return -ENOMEM; | |
4829 | if (IS_SETLKW(cmd)) | |
4830 | data->arg.block = 1; | |
b257957e AB |
4831 | if (recovery_type > NFS_LOCK_NEW) { |
4832 | if (recovery_type == NFS_LOCK_RECLAIM) | |
afe6c27c | 4833 | data->arg.reclaim = NFS_LOCK_RECLAIM; |
b257957e AB |
4834 | task_setup_data.callback_ops = &nfs4_recover_lock_ops; |
4835 | } | |
9d12b216 | 4836 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4837 | msg.rpc_argp = &data->arg; |
4838 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4839 | task_setup_data.callback_data = data; |
4840 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 4841 | if (IS_ERR(task)) |
a5d16a4d | 4842 | return PTR_ERR(task); |
a5d16a4d TM |
4843 | ret = nfs4_wait_for_completion_rpc_task(task); |
4844 | if (ret == 0) { | |
4845 | ret = data->rpc_status; | |
2bee72a6 TM |
4846 | if (ret) |
4847 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4848 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4849 | } else |
4850 | data->cancelled = 1; | |
e6b3c4db | 4851 | rpc_put_task(task); |
3110ff80 | 4852 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4853 | return ret; |
1da177e4 LT |
4854 | } |
4855 | ||
4856 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4857 | { | |
202b50dc | 4858 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4859 | struct nfs4_exception exception = { |
4860 | .inode = state->inode, | |
4861 | }; | |
202b50dc TM |
4862 | int err; |
4863 | ||
4864 | do { | |
42a2d13e TM |
4865 | /* Cache the lock if possible... */ |
4866 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4867 | return 0; | |
afe6c27c | 4868 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4869 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4870 | break; |
4871 | nfs4_handle_exception(server, err, &exception); | |
4872 | } while (exception.retry); | |
4873 | return err; | |
1da177e4 LT |
4874 | } |
4875 | ||
4876 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4877 | { | |
202b50dc | 4878 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4879 | struct nfs4_exception exception = { |
4880 | .inode = state->inode, | |
4881 | }; | |
202b50dc TM |
4882 | int err; |
4883 | ||
6bfc93ef TM |
4884 | err = nfs4_set_lock_state(state, request); |
4885 | if (err != 0) | |
4886 | return err; | |
202b50dc | 4887 | do { |
42a2d13e TM |
4888 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4889 | return 0; | |
afe6c27c | 4890 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4891 | switch (err) { |
4892 | default: | |
4893 | goto out; | |
4894 | case -NFS4ERR_GRACE: | |
4895 | case -NFS4ERR_DELAY: | |
4896 | nfs4_handle_exception(server, err, &exception); | |
4897 | err = 0; | |
4898 | } | |
202b50dc | 4899 | } while (exception.retry); |
a9ed2e25 | 4900 | out: |
202b50dc | 4901 | return err; |
1da177e4 LT |
4902 | } |
4903 | ||
f062eb6c | 4904 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd CL |
4905 | /** |
4906 | * nfs41_check_expired_locks - possibly free a lock stateid | |
4907 | * | |
4908 | * @state: NFSv4 state for an inode | |
4909 | * | |
4910 | * Returns NFS_OK if recovery for this stateid is now finished. | |
4911 | * Otherwise a negative NFS4ERR value is returned. | |
4912 | */ | |
b01dd1d8 | 4913 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 4914 | { |
eb64cf96 | 4915 | int status, ret = -NFS4ERR_BAD_STATEID; |
b01dd1d8 | 4916 | struct nfs4_lock_state *lsp; |
f062eb6c BS |
4917 | struct nfs_server *server = NFS_SERVER(state->inode); |
4918 | ||
b01dd1d8 | 4919 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
795a88c9 | 4920 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { |
b01dd1d8 BS |
4921 | status = nfs41_test_stateid(server, &lsp->ls_stateid); |
4922 | if (status != NFS_OK) { | |
3e60ffdd CL |
4923 | /* Free the stateid unless the server |
4924 | * informs us the stateid is unrecognized. */ | |
89af2739 CL |
4925 | if (status != -NFS4ERR_BAD_STATEID) |
4926 | nfs41_free_stateid(server, | |
4927 | &lsp->ls_stateid); | |
795a88c9 | 4928 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); |
b01dd1d8 BS |
4929 | ret = status; |
4930 | } | |
4931 | } | |
4932 | }; | |
4933 | ||
4934 | return ret; | |
4935 | } | |
4936 | ||
4937 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4938 | { | |
4939 | int status = NFS_OK; | |
4940 | ||
4941 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
4942 | status = nfs41_check_expired_locks(state); | |
eb64cf96 CL |
4943 | if (status != NFS_OK) |
4944 | status = nfs4_lock_expired(state, request); | |
4945 | return status; | |
f062eb6c BS |
4946 | } |
4947 | #endif | |
4948 | ||
1da177e4 LT |
4949 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4950 | { | |
19e03c57 | 4951 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4952 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 4953 | int status = -ENOLCK; |
1da177e4 | 4954 | |
8e469ebd TM |
4955 | if ((fl_flags & FL_POSIX) && |
4956 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
4957 | goto out; | |
6bfc93ef | 4958 | /* Is this a delegated open? */ |
6bfc93ef TM |
4959 | status = nfs4_set_lock_state(state, request); |
4960 | if (status != 0) | |
4961 | goto out; | |
01c3b861 TM |
4962 | request->fl_flags |= FL_ACCESS; |
4963 | status = do_vfs_lock(request->fl_file, request); | |
4964 | if (status < 0) | |
4965 | goto out; | |
19e03c57 | 4966 | down_read(&nfsi->rwsem); |
01c3b861 | 4967 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4968 | /* Yes: cache locks! */ |
01c3b861 | 4969 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4970 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4971 | status = do_vfs_lock(request->fl_file, request); | |
4972 | goto out_unlock; | |
01c3b861 | 4973 | } |
afe6c27c | 4974 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 4975 | if (status != 0) |
01c3b861 | 4976 | goto out_unlock; |
6bfc93ef | 4977 | /* Note: we always want to sleep here! */ |
01c3b861 | 4978 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4979 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
4980 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
4981 | "manager!\n", __func__); | |
01c3b861 | 4982 | out_unlock: |
19e03c57 | 4983 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4984 | out: |
4985 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4986 | return status; |
4987 | } | |
4988 | ||
4989 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4990 | { | |
a1d0b5ee TM |
4991 | struct nfs4_exception exception = { |
4992 | .state = state, | |
05ffe24f | 4993 | .inode = state->inode, |
a1d0b5ee | 4994 | }; |
1da177e4 LT |
4995 | int err; |
4996 | ||
4997 | do { | |
965b5d67 TM |
4998 | err = _nfs4_proc_setlk(state, cmd, request); |
4999 | if (err == -NFS4ERR_DENIED) | |
5000 | err = -EAGAIN; | |
1da177e4 | 5001 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 5002 | err, &exception); |
1da177e4 LT |
5003 | } while (exception.retry); |
5004 | return err; | |
5005 | } | |
5006 | ||
5007 | static int | |
5008 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
5009 | { | |
5010 | struct nfs_open_context *ctx; | |
5011 | struct nfs4_state *state; | |
5012 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
5013 | int status; | |
5014 | ||
5015 | /* verify open state */ | |
cd3758e3 | 5016 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
5017 | state = ctx->state; |
5018 | ||
5019 | if (request->fl_start < 0 || request->fl_end < 0) | |
5020 | return -EINVAL; | |
5021 | ||
d953126a TM |
5022 | if (IS_GETLK(cmd)) { |
5023 | if (state != NULL) | |
5024 | return nfs4_proc_getlk(state, F_GETLK, request); | |
5025 | return 0; | |
5026 | } | |
1da177e4 LT |
5027 | |
5028 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
5029 | return -EINVAL; | |
5030 | ||
d953126a TM |
5031 | if (request->fl_type == F_UNLCK) { |
5032 | if (state != NULL) | |
5033 | return nfs4_proc_unlck(state, cmd, request); | |
5034 | return 0; | |
5035 | } | |
1da177e4 | 5036 | |
d953126a TM |
5037 | if (state == NULL) |
5038 | return -ENOLCK; | |
55725513 TM |
5039 | /* |
5040 | * Don't rely on the VFS having checked the file open mode, | |
5041 | * since it won't do this for flock() locks. | |
5042 | */ | |
f44106e2 | 5043 | switch (request->fl_type) { |
55725513 TM |
5044 | case F_RDLCK: |
5045 | if (!(filp->f_mode & FMODE_READ)) | |
5046 | return -EBADF; | |
5047 | break; | |
5048 | case F_WRLCK: | |
5049 | if (!(filp->f_mode & FMODE_WRITE)) | |
5050 | return -EBADF; | |
5051 | } | |
5052 | ||
1da177e4 LT |
5053 | do { |
5054 | status = nfs4_proc_setlk(state, cmd, request); | |
5055 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
5056 | break; | |
5057 | timeout = nfs4_set_lock_task_retry(timeout); | |
5058 | status = -ERESTARTSYS; | |
5059 | if (signalled()) | |
5060 | break; | |
5061 | } while(status < 0); | |
1da177e4 LT |
5062 | return status; |
5063 | } | |
5064 | ||
888e694c TM |
5065 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
5066 | { | |
5067 | struct nfs_server *server = NFS_SERVER(state->inode); | |
5068 | struct nfs4_exception exception = { }; | |
5069 | int err; | |
5070 | ||
5071 | err = nfs4_set_lock_state(state, fl); | |
5072 | if (err != 0) | |
5073 | goto out; | |
5074 | do { | |
afe6c27c | 5075 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
5076 | switch (err) { |
5077 | default: | |
a030889a WAA |
5078 | printk(KERN_ERR "NFS: %s: unhandled error " |
5079 | "%d.\n", __func__, err); | |
d5122201 | 5080 | case 0: |
965b5d67 | 5081 | case -ESTALE: |
d5122201 TM |
5082 | goto out; |
5083 | case -NFS4ERR_EXPIRED: | |
0ced63d1 | 5084 | nfs4_schedule_stateid_recovery(server, state); |
d5122201 | 5085 | case -NFS4ERR_STALE_CLIENTID: |
965b5d67 | 5086 | case -NFS4ERR_STALE_STATEID: |
0400a6b0 TM |
5087 | nfs4_schedule_lease_recovery(server->nfs_client); |
5088 | goto out; | |
74e7bb73 RL |
5089 | case -NFS4ERR_BADSESSION: |
5090 | case -NFS4ERR_BADSLOT: | |
5091 | case -NFS4ERR_BAD_HIGH_SLOT: | |
5092 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
5093 | case -NFS4ERR_DEADSESSION: | |
9f594791 | 5094 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); |
d5122201 | 5095 | goto out; |
965b5d67 TM |
5096 | case -ERESTARTSYS: |
5097 | /* | |
5098 | * The show must go on: exit, but mark the | |
5099 | * stateid as needing recovery. | |
5100 | */ | |
a1d0b5ee | 5101 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
5102 | case -NFS4ERR_ADMIN_REVOKED: |
5103 | case -NFS4ERR_BAD_STATEID: | |
5104 | case -NFS4ERR_OPENMODE: | |
0400a6b0 | 5105 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
5106 | err = 0; |
5107 | goto out; | |
168667c4 TM |
5108 | case -EKEYEXPIRED: |
5109 | /* | |
5110 | * User RPCSEC_GSS context has expired. | |
5111 | * We cannot recover this stateid now, so | |
5112 | * skip it and allow recovery thread to | |
5113 | * proceed. | |
5114 | */ | |
5115 | err = 0; | |
5116 | goto out; | |
965b5d67 TM |
5117 | case -ENOMEM: |
5118 | case -NFS4ERR_DENIED: | |
5119 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
5120 | err = 0; | |
5121 | goto out; | |
d5122201 TM |
5122 | case -NFS4ERR_DELAY: |
5123 | break; | |
5124 | } | |
888e694c TM |
5125 | err = nfs4_handle_exception(server, err, &exception); |
5126 | } while (exception.retry); | |
5127 | out: | |
5128 | return err; | |
5129 | } | |
6b3b5496 | 5130 | |
cf470c3e TM |
5131 | struct nfs_release_lockowner_data { |
5132 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 5133 | struct nfs_server *server; |
cf470c3e TM |
5134 | struct nfs_release_lockowner_args args; |
5135 | }; | |
5136 | ||
d3c7b7cc TM |
5137 | static void nfs4_release_lockowner_release(void *calldata) |
5138 | { | |
cf470c3e | 5139 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 5140 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
5141 | kfree(calldata); |
5142 | } | |
5143 | ||
17280175 | 5144 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
d3c7b7cc TM |
5145 | .rpc_release = nfs4_release_lockowner_release, |
5146 | }; | |
5147 | ||
cf470c3e | 5148 | int nfs4_release_lockowner(struct nfs4_lock_state *lsp) |
d3c7b7cc TM |
5149 | { |
5150 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
cf470c3e | 5151 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
5152 | struct rpc_message msg = { |
5153 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
5154 | }; | |
5155 | ||
5156 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
cf470c3e TM |
5157 | return -EINVAL; |
5158 | data = kmalloc(sizeof(*data), GFP_NOFS); | |
5159 | if (!data) | |
5160 | return -ENOMEM; | |
5161 | data->lsp = lsp; | |
5ae67c4f | 5162 | data->server = server; |
cf470c3e TM |
5163 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
5164 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
5165 | data->args.lock_owner.s_dev = server->s_dev; | |
5166 | msg.rpc_argp = &data->args; | |
5167 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); | |
5168 | return 0; | |
d3c7b7cc TM |
5169 | } |
5170 | ||
aa1870af BF |
5171 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
5172 | ||
64c2ce8b AK |
5173 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
5174 | const void *buf, size_t buflen, | |
5175 | int flags, int type) | |
6b3b5496 | 5176 | { |
64c2ce8b AK |
5177 | if (strcmp(key, "") != 0) |
5178 | return -EINVAL; | |
4b580ee3 | 5179 | |
64c2ce8b | 5180 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5181 | } |
5182 | ||
64c2ce8b AK |
5183 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
5184 | void *buf, size_t buflen, int type) | |
6b3b5496 | 5185 | { |
64c2ce8b AK |
5186 | if (strcmp(key, "") != 0) |
5187 | return -EINVAL; | |
aa1870af | 5188 | |
64c2ce8b | 5189 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5190 | } |
5191 | ||
64c2ce8b AK |
5192 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
5193 | size_t list_len, const char *name, | |
5194 | size_t name_len, int type) | |
6b3b5496 | 5195 | { |
64c2ce8b | 5196 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 5197 | |
096455a2 BF |
5198 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
5199 | return 0; | |
64c2ce8b AK |
5200 | |
5201 | if (list && len <= list_len) | |
5202 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 5203 | return len; |
6b3b5496 BF |
5204 | } |
5205 | ||
533eb461 AA |
5206 | /* |
5207 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
5208 | */ | |
69aaaae1 TM |
5209 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
5210 | { | |
533eb461 AA |
5211 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
5212 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
5213 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 5214 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
5215 | return; |
5216 | ||
5217 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 5218 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
5219 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
5220 | fattr->nlink = 2; | |
5221 | } | |
5222 | ||
f05d147f BS |
5223 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5224 | const struct qstr *name, | |
5225 | struct nfs4_fs_locations *fs_locations, | |
5226 | struct page *page) | |
683b57b4 TM |
5227 | { |
5228 | struct nfs_server *server = NFS_SERVER(dir); | |
5229 | u32 bitmask[2] = { | |
361e624f | 5230 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
5231 | }; |
5232 | struct nfs4_fs_locations_arg args = { | |
5233 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 5234 | .name = name, |
683b57b4 TM |
5235 | .page = page, |
5236 | .bitmask = bitmask, | |
5237 | }; | |
22958463 BH |
5238 | struct nfs4_fs_locations_res res = { |
5239 | .fs_locations = fs_locations, | |
5240 | }; | |
683b57b4 TM |
5241 | struct rpc_message msg = { |
5242 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
5243 | .rpc_argp = &args, | |
22958463 | 5244 | .rpc_resp = &res, |
683b57b4 TM |
5245 | }; |
5246 | int status; | |
5247 | ||
3110ff80 | 5248 | dprintk("%s: start\n", __func__); |
533eb461 AA |
5249 | |
5250 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
5251 | * is not supported */ | |
5252 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
5253 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
5254 | else | |
5255 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
5256 | ||
c228fd3a | 5257 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 5258 | fs_locations->server = server; |
830b8e33 | 5259 | fs_locations->nlocations = 0; |
f05d147f | 5260 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 5261 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
5262 | return status; |
5263 | } | |
5264 | ||
f05d147f BS |
5265 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5266 | const struct qstr *name, | |
5267 | struct nfs4_fs_locations *fs_locations, | |
5268 | struct page *page) | |
db0a9593 BS |
5269 | { |
5270 | struct nfs4_exception exception = { }; | |
5271 | int err; | |
5272 | do { | |
5273 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
f05d147f | 5274 | _nfs4_proc_fs_locations(client, dir, name, fs_locations, page), |
db0a9593 BS |
5275 | &exception); |
5276 | } while (exception.retry); | |
5277 | return err; | |
5278 | } | |
5279 | ||
5a5ea0d4 BS |
5280 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
5281 | { | |
5282 | int status; | |
5283 | struct nfs4_secinfo_arg args = { | |
5284 | .dir_fh = NFS_FH(dir), | |
5285 | .name = name, | |
5286 | }; | |
5287 | struct nfs4_secinfo_res res = { | |
5288 | .flavors = flavors, | |
5289 | }; | |
5290 | struct rpc_message msg = { | |
5291 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
5292 | .rpc_argp = &args, | |
5293 | .rpc_resp = &res, | |
5294 | }; | |
5295 | ||
5296 | dprintk("NFS call secinfo %s\n", name->name); | |
5297 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
5298 | dprintk("NFS reply secinfo: %d\n", status); | |
5299 | return status; | |
5300 | } | |
5301 | ||
72de53ec BS |
5302 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
5303 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
5304 | { |
5305 | struct nfs4_exception exception = { }; | |
5306 | int err; | |
5307 | do { | |
5308 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
5309 | _nfs4_proc_secinfo(dir, name, flavors), | |
5310 | &exception); | |
5311 | } while (exception.retry); | |
5312 | return err; | |
5313 | } | |
5314 | ||
557134a3 | 5315 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
5316 | /* |
5317 | * Check the exchange flags returned by the server for invalid flags, having | |
5318 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
5319 | * DS flags set. | |
5320 | */ | |
5321 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
5322 | { | |
5323 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
5324 | goto out_inval; | |
5325 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
5326 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
5327 | goto out_inval; | |
5328 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
5329 | goto out_inval; | |
5330 | return NFS_OK; | |
5331 | out_inval: | |
5332 | return -NFS4ERR_INVAL; | |
5333 | } | |
5334 | ||
78fe0f41 | 5335 | static bool |
79d4e1f0 CL |
5336 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
5337 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
5338 | { |
5339 | if (a->server_scope_sz == b->server_scope_sz && | |
5340 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
5341 | return true; | |
5342 | ||
5343 | return false; | |
5344 | } | |
5345 | ||
7c44f1ae WAA |
5346 | /* |
5347 | * nfs4_proc_bind_conn_to_session() | |
5348 | * | |
5349 | * The 4.1 client currently uses the same TCP connection for the | |
5350 | * fore and backchannel. | |
5351 | */ | |
2cf047c9 | 5352 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) |
7c44f1ae WAA |
5353 | { |
5354 | int status; | |
5355 | struct nfs41_bind_conn_to_session_res res; | |
5356 | struct rpc_message msg = { | |
5357 | .rpc_proc = | |
5358 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
5359 | .rpc_argp = clp, | |
5360 | .rpc_resp = &res, | |
2cf047c9 | 5361 | .rpc_cred = cred, |
7c44f1ae WAA |
5362 | }; |
5363 | ||
5364 | dprintk("--> %s\n", __func__); | |
7c44f1ae WAA |
5365 | |
5366 | res.session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); | |
5367 | if (unlikely(res.session == NULL)) { | |
5368 | status = -ENOMEM; | |
5369 | goto out; | |
5370 | } | |
5371 | ||
5372 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5373 | if (status == 0) { | |
5374 | if (memcmp(res.session->sess_id.data, | |
5375 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { | |
5376 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
5377 | status = -EIO; | |
5378 | goto out_session; | |
5379 | } | |
5380 | if (res.dir != NFS4_CDFS4_BOTH) { | |
5381 | dprintk("NFS: %s: Unexpected direction from server\n", | |
5382 | __func__); | |
5383 | status = -EIO; | |
5384 | goto out_session; | |
5385 | } | |
5386 | if (res.use_conn_in_rdma_mode) { | |
5387 | dprintk("NFS: %s: Server returned RDMA mode = true\n", | |
5388 | __func__); | |
5389 | status = -EIO; | |
5390 | goto out_session; | |
5391 | } | |
5392 | } | |
5393 | out_session: | |
5394 | kfree(res.session); | |
5395 | out: | |
5396 | dprintk("<-- %s status= %d\n", __func__, status); | |
5397 | return status; | |
5398 | } | |
5399 | ||
99fe60d0 BH |
5400 | /* |
5401 | * nfs4_proc_exchange_id() | |
5402 | * | |
6bbb4ae8 CL |
5403 | * Returns zero, a negative errno, or a negative NFS4ERR status code. |
5404 | * | |
99fe60d0 BH |
5405 | * Since the clientid has expired, all compounds using sessions |
5406 | * associated with the stale clientid will be returning | |
5407 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
5408 | * be in some phase of session reset. | |
5409 | */ | |
4d643d1d | 5410 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
5411 | { |
5412 | nfs4_verifier verifier; | |
5413 | struct nfs41_exchange_id_args args = { | |
cd93710e | 5414 | .verifier = &verifier, |
99fe60d0 | 5415 | .client = clp, |
357f54d6 | 5416 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
5417 | }; |
5418 | struct nfs41_exchange_id_res res = { | |
32b01310 | 5419 | 0 |
99fe60d0 BH |
5420 | }; |
5421 | int status; | |
5422 | struct rpc_message msg = { | |
5423 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
5424 | .rpc_argp = &args, | |
5425 | .rpc_resp = &res, | |
5426 | .rpc_cred = cred, | |
5427 | }; | |
99fe60d0 | 5428 | |
f092075d | 5429 | nfs4_init_boot_verifier(clp, &verifier); |
e984a55a CL |
5430 | args.id_len = nfs4_init_uniform_client_string(clp, args.id, |
5431 | sizeof(args.id)); | |
6bbb4ae8 CL |
5432 | dprintk("NFS call exchange_id auth=%s, '%.*s'\n", |
5433 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
5434 | args.id_len, args.id); | |
99fe60d0 | 5435 | |
acdeb69d | 5436 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 5437 | GFP_NOFS); |
acdeb69d | 5438 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
5439 | status = -ENOMEM; |
5440 | goto out; | |
5441 | } | |
78fe0f41 | 5442 | |
79d4e1f0 | 5443 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 5444 | GFP_NOFS); |
177313f1 | 5445 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 5446 | status = -ENOMEM; |
acdeb69d | 5447 | goto out_server_owner; |
abe9a6d5 | 5448 | } |
78fe0f41 | 5449 | |
bbafffd2 | 5450 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 5451 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
5452 | status = -ENOMEM; |
5453 | goto out_server_scope; | |
5454 | } | |
5455 | ||
1bd714f2 | 5456 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
177313f1 | 5457 | if (status == 0) |
32b01310 | 5458 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 5459 | |
acdeb69d | 5460 | if (status == 0) { |
32b01310 TM |
5461 | clp->cl_clientid = res.clientid; |
5462 | clp->cl_exchange_flags = (res.flags & ~EXCHGID4_FLAG_CONFIRMED_R); | |
5463 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) | |
5464 | clp->cl_seqid = res.seqid; | |
5465 | ||
acdeb69d CL |
5466 | kfree(clp->cl_serverowner); |
5467 | clp->cl_serverowner = res.server_owner; | |
5468 | res.server_owner = NULL; | |
78fe0f41 | 5469 | |
7d2ed9ac | 5470 | /* use the most recent implementation id */ |
59155546 CL |
5471 | kfree(clp->cl_implid); |
5472 | clp->cl_implid = res.impl_id; | |
7d2ed9ac | 5473 | |
177313f1 | 5474 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 5475 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
5476 | res.server_scope)) { |
5477 | dprintk("%s: server_scope mismatch detected\n", | |
5478 | __func__); | |
5479 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
5480 | kfree(clp->cl_serverscope); |
5481 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
5482 | } |
5483 | ||
177313f1 | 5484 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 5485 | clp->cl_serverscope = res.server_scope; |
abe9a6d5 WAA |
5486 | goto out; |
5487 | } | |
32b01310 TM |
5488 | } else |
5489 | kfree(res.impl_id); | |
7d2ed9ac | 5490 | |
acdeb69d CL |
5491 | out_server_owner: |
5492 | kfree(res.server_owner); | |
7d2ed9ac | 5493 | out_server_scope: |
abe9a6d5 WAA |
5494 | kfree(res.server_scope); |
5495 | out: | |
177313f1 | 5496 | if (clp->cl_implid != NULL) |
6bbb4ae8 | 5497 | dprintk("NFS reply exchange_id: Server Implementation ID: " |
7d2ed9ac | 5498 | "domain: %s, name: %s, date: %llu,%u\n", |
6bbb4ae8 | 5499 | clp->cl_implid->domain, clp->cl_implid->name, |
59155546 CL |
5500 | clp->cl_implid->date.seconds, |
5501 | clp->cl_implid->date.nseconds); | |
6bbb4ae8 | 5502 | dprintk("NFS reply exchange_id: %d\n", status); |
99fe60d0 BH |
5503 | return status; |
5504 | } | |
5505 | ||
66245539 TM |
5506 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
5507 | struct rpc_cred *cred) | |
5508 | { | |
5509 | struct rpc_message msg = { | |
5510 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
5511 | .rpc_argp = clp, | |
5512 | .rpc_cred = cred, | |
5513 | }; | |
5514 | int status; | |
5515 | ||
5516 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5517 | if (status) | |
02c67525 | 5518 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
5519 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
5520 | return status; | |
5521 | } | |
5522 | ||
5523 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
5524 | struct rpc_cred *cred) | |
5525 | { | |
5526 | unsigned int loop; | |
5527 | int ret; | |
5528 | ||
5529 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
5530 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
5531 | switch (ret) { | |
5532 | case -NFS4ERR_DELAY: | |
5533 | case -NFS4ERR_CLIENTID_BUSY: | |
5534 | ssleep(1); | |
5535 | break; | |
5536 | default: | |
5537 | return ret; | |
5538 | } | |
5539 | } | |
5540 | return 0; | |
5541 | } | |
5542 | ||
5543 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
5544 | { | |
5545 | struct rpc_cred *cred; | |
5546 | int ret = 0; | |
5547 | ||
5548 | if (clp->cl_mvops->minor_version < 1) | |
5549 | goto out; | |
5550 | if (clp->cl_exchange_flags == 0) | |
5551 | goto out; | |
05f4c350 CL |
5552 | if (clp->cl_preserve_clid) |
5553 | goto out; | |
66245539 TM |
5554 | cred = nfs4_get_exchange_id_cred(clp); |
5555 | ret = nfs4_proc_destroy_clientid(clp, cred); | |
5556 | if (cred) | |
5557 | put_rpccred(cred); | |
5558 | switch (ret) { | |
5559 | case 0: | |
5560 | case -NFS4ERR_STALE_CLIENTID: | |
5561 | clp->cl_exchange_flags = 0; | |
5562 | } | |
5563 | out: | |
5564 | return ret; | |
5565 | } | |
5566 | ||
2050f0cc AA |
5567 | struct nfs4_get_lease_time_data { |
5568 | struct nfs4_get_lease_time_args *args; | |
5569 | struct nfs4_get_lease_time_res *res; | |
5570 | struct nfs_client *clp; | |
5571 | }; | |
5572 | ||
5573 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
5574 | void *calldata) | |
5575 | { | |
5576 | int ret; | |
5577 | struct nfs4_get_lease_time_data *data = | |
5578 | (struct nfs4_get_lease_time_data *)calldata; | |
5579 | ||
5580 | dprintk("--> %s\n", __func__); | |
689cf5c1 | 5581 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
2050f0cc AA |
5582 | /* just setup sequence, do not trigger session recovery |
5583 | since we're invoked within one */ | |
5584 | ret = nfs41_setup_sequence(data->clp->cl_session, | |
689cf5c1 | 5585 | &data->args->la_seq_args, |
9d12b216 | 5586 | &data->res->lr_seq_res, task); |
2050f0cc | 5587 | |
d3edcf96 TM |
5588 | if (ret != -EAGAIN) |
5589 | rpc_call_start(task); | |
2050f0cc AA |
5590 | dprintk("<-- %s\n", __func__); |
5591 | } | |
5592 | ||
5593 | /* | |
5594 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
5595 | * from sequence operation or clientid errors. | |
5596 | */ | |
5597 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
5598 | { | |
5599 | struct nfs4_get_lease_time_data *data = | |
5600 | (struct nfs4_get_lease_time_data *)calldata; | |
5601 | ||
5602 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5603 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
5604 | return; | |
2050f0cc AA |
5605 | switch (task->tk_status) { |
5606 | case -NFS4ERR_DELAY: | |
5607 | case -NFS4ERR_GRACE: | |
5608 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
5609 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
5610 | task->tk_status = 0; | |
a8a4ae3a AA |
5611 | /* fall through */ |
5612 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 5613 | rpc_restart_call_prepare(task); |
2050f0cc AA |
5614 | return; |
5615 | } | |
2050f0cc AA |
5616 | dprintk("<-- %s\n", __func__); |
5617 | } | |
5618 | ||
17280175 | 5619 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
5620 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
5621 | .rpc_call_done = nfs4_get_lease_time_done, | |
5622 | }; | |
5623 | ||
5624 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
5625 | { | |
5626 | struct rpc_task *task; | |
5627 | struct nfs4_get_lease_time_args args; | |
5628 | struct nfs4_get_lease_time_res res = { | |
5629 | .lr_fsinfo = fsinfo, | |
5630 | }; | |
5631 | struct nfs4_get_lease_time_data data = { | |
5632 | .args = &args, | |
5633 | .res = &res, | |
5634 | .clp = clp, | |
5635 | }; | |
5636 | struct rpc_message msg = { | |
5637 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
5638 | .rpc_argp = &args, | |
5639 | .rpc_resp = &res, | |
5640 | }; | |
5641 | struct rpc_task_setup task_setup = { | |
5642 | .rpc_client = clp->cl_rpcclient, | |
5643 | .rpc_message = &msg, | |
5644 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
5645 | .callback_data = &data, |
5646 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
5647 | }; |
5648 | int status; | |
5649 | ||
9d12b216 | 5650 | nfs41_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
2050f0cc AA |
5651 | dprintk("--> %s\n", __func__); |
5652 | task = rpc_run_task(&task_setup); | |
5653 | ||
5654 | if (IS_ERR(task)) | |
5655 | status = PTR_ERR(task); | |
5656 | else { | |
5657 | status = task->tk_status; | |
5658 | rpc_put_task(task); | |
5659 | } | |
5660 | dprintk("<-- %s return %d\n", __func__, status); | |
5661 | ||
5662 | return status; | |
5663 | } | |
5664 | ||
e3725ec0 TM |
5665 | struct nfs4_slot *nfs4_alloc_slots(struct nfs4_slot_table *table, |
5666 | u32 max_slots, gfp_t gfp_flags) | |
f86f36a6 | 5667 | { |
e3725ec0 TM |
5668 | struct nfs4_slot *tbl; |
5669 | u32 i; | |
5670 | ||
5671 | tbl = kmalloc_array(max_slots, sizeof(*tbl), gfp_flags); | |
5672 | if (tbl != NULL) { | |
df2fabff | 5673 | for (i = 0; i < max_slots; i++) { |
e3725ec0 | 5674 | tbl[i].table = table; |
df2fabff TM |
5675 | tbl[i].slot_nr = i; |
5676 | } | |
e3725ec0 TM |
5677 | } |
5678 | return tbl; | |
f86f36a6 TM |
5679 | } |
5680 | ||
5681 | static void nfs4_add_and_init_slots(struct nfs4_slot_table *tbl, | |
5682 | struct nfs4_slot *new, | |
5683 | u32 max_slots, | |
5684 | u32 ivalue) | |
5685 | { | |
5686 | struct nfs4_slot *old = NULL; | |
5687 | u32 i; | |
5688 | ||
5689 | spin_lock(&tbl->slot_tbl_lock); | |
5690 | if (new) { | |
5691 | old = tbl->slots; | |
5692 | tbl->slots = new; | |
5693 | tbl->max_slots = max_slots; | |
5694 | } | |
f9b1ef5f | 5695 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
f86f36a6 TM |
5696 | for (i = 0; i < tbl->max_slots; i++) |
5697 | tbl->slots[i].seq_nr = ivalue; | |
5698 | spin_unlock(&tbl->slot_tbl_lock); | |
5699 | kfree(old); | |
5700 | } | |
5701 | ||
b73dafa7 | 5702 | /* |
f86f36a6 | 5703 | * (re)Initialise a slot table |
b73dafa7 | 5704 | */ |
f86f36a6 TM |
5705 | static int nfs4_realloc_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs, |
5706 | u32 ivalue) | |
ac72b7b3 | 5707 | { |
104aeba4 | 5708 | struct nfs4_slot *new = NULL; |
f86f36a6 | 5709 | int ret = -ENOMEM; |
ac72b7b3 | 5710 | |
104aeba4 AA |
5711 | dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__, |
5712 | max_reqs, tbl->max_slots); | |
ac72b7b3 | 5713 | |
104aeba4 AA |
5714 | /* Does the newly negotiated max_reqs match the existing slot table? */ |
5715 | if (max_reqs != tbl->max_slots) { | |
e3725ec0 | 5716 | new = nfs4_alloc_slots(tbl, max_reqs, GFP_NOFS); |
104aeba4 AA |
5717 | if (!new) |
5718 | goto out; | |
104aeba4 | 5719 | } |
f86f36a6 TM |
5720 | ret = 0; |
5721 | ||
5722 | nfs4_add_and_init_slots(tbl, new, max_reqs, ivalue); | |
ac72b7b3 AA |
5723 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, |
5724 | tbl, tbl->slots, tbl->max_slots); | |
5725 | out: | |
5726 | dprintk("<-- %s: return %d\n", __func__, ret); | |
5727 | return ret; | |
5728 | } | |
5729 | ||
f8625a6a RL |
5730 | /* Destroy the slot table */ |
5731 | static void nfs4_destroy_slot_tables(struct nfs4_session *session) | |
5732 | { | |
5733 | if (session->fc_slot_table.slots != NULL) { | |
5734 | kfree(session->fc_slot_table.slots); | |
5735 | session->fc_slot_table.slots = NULL; | |
5736 | } | |
5737 | if (session->bc_slot_table.slots != NULL) { | |
5738 | kfree(session->bc_slot_table.slots); | |
5739 | session->bc_slot_table.slots = NULL; | |
5740 | } | |
5741 | return; | |
5742 | } | |
5743 | ||
050047ce | 5744 | /* |
aacd5537 | 5745 | * Initialize or reset the forechannel and backchannel tables |
050047ce | 5746 | */ |
aacd5537 | 5747 | static int nfs4_setup_session_slot_tables(struct nfs4_session *ses) |
050047ce | 5748 | { |
f26468fb | 5749 | struct nfs4_slot_table *tbl; |
aacd5537 | 5750 | int status; |
050047ce | 5751 | |
aacd5537 AA |
5752 | dprintk("--> %s\n", __func__); |
5753 | /* Fore channel */ | |
5754 | tbl = &ses->fc_slot_table; | |
e3725ec0 | 5755 | tbl->session = ses; |
f86f36a6 TM |
5756 | status = nfs4_realloc_slot_table(tbl, ses->fc_attrs.max_reqs, 1); |
5757 | if (status) /* -ENOMEM */ | |
5758 | return status; | |
aacd5537 AA |
5759 | /* Back channel */ |
5760 | tbl = &ses->bc_slot_table; | |
e3725ec0 | 5761 | tbl->session = ses; |
f86f36a6 TM |
5762 | status = nfs4_realloc_slot_table(tbl, ses->bc_attrs.max_reqs, 0); |
5763 | if (status && tbl->slots == NULL) | |
5764 | /* Fore and back channel share a connection so get | |
5765 | * both slot tables or neither */ | |
5766 | nfs4_destroy_slot_tables(ses); | |
f8625a6a | 5767 | return status; |
557134a3 AA |
5768 | } |
5769 | ||
5770 | struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) | |
5771 | { | |
5772 | struct nfs4_session *session; | |
5773 | struct nfs4_slot_table *tbl; | |
5774 | ||
8535b2be | 5775 | session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); |
557134a3 AA |
5776 | if (!session) |
5777 | return NULL; | |
76db6d95 | 5778 | |
557134a3 | 5779 | tbl = &session->fc_slot_table; |
45d43c29 | 5780 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
557134a3 | 5781 | spin_lock_init(&tbl->slot_tbl_lock); |
689cf5c1 | 5782 | rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); |
42acd021 | 5783 | init_completion(&tbl->complete); |
f8625a6a RL |
5784 | |
5785 | tbl = &session->bc_slot_table; | |
45d43c29 | 5786 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
f8625a6a RL |
5787 | spin_lock_init(&tbl->slot_tbl_lock); |
5788 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); | |
42acd021 | 5789 | init_completion(&tbl->complete); |
f8625a6a | 5790 | |
1055d76d TM |
5791 | session->session_state = 1<<NFS4_SESSION_INITING; |
5792 | ||
557134a3 AA |
5793 | session->clp = clp; |
5794 | return session; | |
5795 | } | |
5796 | ||
5797 | void nfs4_destroy_session(struct nfs4_session *session) | |
5798 | { | |
2446ab60 | 5799 | struct rpc_xprt *xprt; |
848f5bda | 5800 | struct rpc_cred *cred; |
2446ab60 | 5801 | |
848f5bda TM |
5802 | cred = nfs4_get_exchange_id_cred(session->clp); |
5803 | nfs4_proc_destroy_session(session, cred); | |
5804 | if (cred) | |
5805 | put_rpccred(cred); | |
2446ab60 TM |
5806 | |
5807 | rcu_read_lock(); | |
5808 | xprt = rcu_dereference(session->clp->cl_rpcclient->cl_xprt); | |
5809 | rcu_read_unlock(); | |
5a0ffe54 | 5810 | dprintk("%s Destroy backchannel for xprt %p\n", |
2446ab60 TM |
5811 | __func__, xprt); |
5812 | xprt_destroy_backchannel(xprt, NFS41_BC_MIN_CALLBACKS); | |
f8625a6a | 5813 | nfs4_destroy_slot_tables(session); |
557134a3 AA |
5814 | kfree(session); |
5815 | } | |
5816 | ||
fc931582 AA |
5817 | /* |
5818 | * Initialize the values to be used by the client in CREATE_SESSION | |
5819 | * If nfs4_init_session set the fore channel request and response sizes, | |
5820 | * use them. | |
5821 | * | |
5822 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
5823 | * always set csa_cachethis to FALSE because the current implementation | |
5824 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
5825 | */ | |
5826 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
5827 | { | |
5828 | struct nfs4_session *session = args->client->cl_session; | |
ae72ae67 TM |
5829 | unsigned int mxrqst_sz = session->fc_target_max_rqst_sz, |
5830 | mxresp_sz = session->fc_target_max_resp_sz; | |
fc931582 AA |
5831 | |
5832 | if (mxrqst_sz == 0) | |
5833 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
5834 | if (mxresp_sz == 0) | |
5835 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
5836 | /* Fore channel attributes */ | |
fc931582 AA |
5837 | args->fc_attrs.max_rqst_sz = mxrqst_sz; |
5838 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 | 5839 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 5840 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
5841 | |
5842 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 5843 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
5844 | __func__, |
5845 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 5846 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
5847 | |
5848 | /* Back channel attributes */ | |
fc931582 AA |
5849 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
5850 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
5851 | args->bc_attrs.max_resp_sz_cached = 0; | |
5852 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5853 | args->bc_attrs.max_reqs = 1; | |
5854 | ||
5855 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5856 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5857 | __func__, | |
5858 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5859 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5860 | args->bc_attrs.max_reqs); | |
5861 | } | |
5862 | ||
43c2e885 | 5863 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5864 | { |
43c2e885 BF |
5865 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5866 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5867 | ||
43c2e885 BF |
5868 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
5869 | return -EINVAL; | |
5870 | /* | |
5871 | * Our requested max_ops is the minimum we need; we're not | |
5872 | * prepared to break up compounds into smaller pieces than that. | |
5873 | * So, no point even trying to continue if the server won't | |
5874 | * cooperate: | |
5875 | */ | |
5876 | if (rcvd->max_ops < sent->max_ops) | |
5877 | return -EINVAL; | |
5878 | if (rcvd->max_reqs == 0) | |
5879 | return -EINVAL; | |
b4b9a0c1 VG |
5880 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
5881 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 5882 | return 0; |
8d35301d AA |
5883 | } |
5884 | ||
43c2e885 BF |
5885 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5886 | { | |
5887 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5888 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5889 | |
43c2e885 BF |
5890 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5891 | return -EINVAL; | |
5892 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5893 | return -EINVAL; | |
5894 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5895 | return -EINVAL; | |
5896 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 5897 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 5898 | return -EINVAL; |
b4b9a0c1 | 5899 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
5900 | return -EINVAL; |
5901 | return 0; | |
5902 | } | |
8d35301d | 5903 | |
8d35301d AA |
5904 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5905 | struct nfs4_session *session) | |
5906 | { | |
43c2e885 | 5907 | int ret; |
8d35301d | 5908 | |
43c2e885 BF |
5909 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5910 | if (ret) | |
5911 | return ret; | |
5912 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5913 | } |
5914 | ||
848f5bda TM |
5915 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
5916 | struct rpc_cred *cred) | |
fc931582 AA |
5917 | { |
5918 | struct nfs4_session *session = clp->cl_session; | |
5919 | struct nfs41_create_session_args args = { | |
5920 | .client = clp, | |
5921 | .cb_program = NFS4_CALLBACK, | |
5922 | }; | |
5923 | struct nfs41_create_session_res res = { | |
5924 | .client = clp, | |
5925 | }; | |
5926 | struct rpc_message msg = { | |
5927 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5928 | .rpc_argp = &args, | |
5929 | .rpc_resp = &res, | |
848f5bda | 5930 | .rpc_cred = cred, |
fc931582 AA |
5931 | }; |
5932 | int status; | |
5933 | ||
5934 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5935 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 5936 | |
1bd714f2 | 5937 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
fc931582 | 5938 | |
43095d39 | 5939 | if (!status) { |
8d35301d AA |
5940 | /* Verify the session's negotiated channel_attrs values */ |
5941 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5942 | /* Increment the clientid slot sequence id */ |
5943 | clp->cl_seqid++; | |
5944 | } | |
5945 | ||
5946 | return status; | |
5947 | } | |
5948 | ||
5949 | /* | |
5950 | * Issues a CREATE_SESSION operation to the server. | |
5951 | * It is the responsibility of the caller to verify the session is | |
5952 | * expired before calling this routine. | |
5953 | */ | |
848f5bda | 5954 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
5955 | { |
5956 | int status; | |
5957 | unsigned *ptr; | |
fc931582 AA |
5958 | struct nfs4_session *session = clp->cl_session; |
5959 | ||
5960 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5961 | ||
848f5bda | 5962 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
5963 | if (status) |
5964 | goto out; | |
5965 | ||
aacd5537 AA |
5966 | /* Init or reset the session slot tables */ |
5967 | status = nfs4_setup_session_slot_tables(session); | |
5968 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
5969 | if (status) |
5970 | goto out; | |
5971 | ||
5972 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5973 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5974 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5975 | out: |
5976 | dprintk("<-- %s\n", __func__); | |
5977 | return status; | |
5978 | } | |
5979 | ||
0f3e66c6 AA |
5980 | /* |
5981 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5982 | * The caller must serialize access to this routine. | |
5983 | */ | |
848f5bda TM |
5984 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
5985 | struct rpc_cred *cred) | |
0f3e66c6 | 5986 | { |
848f5bda TM |
5987 | struct rpc_message msg = { |
5988 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
5989 | .rpc_argp = session, | |
5990 | .rpc_cred = cred, | |
5991 | }; | |
0f3e66c6 | 5992 | int status = 0; |
0f3e66c6 AA |
5993 | |
5994 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5995 | ||
5996 | /* session is still being setup */ | |
5997 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5998 | return status; | |
5999 | ||
1bd714f2 | 6000 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
0f3e66c6 AA |
6001 | |
6002 | if (status) | |
08106ac7 | 6003 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
6004 | "Session has been destroyed regardless...\n", status); |
6005 | ||
6006 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
6007 | return status; | |
6008 | } | |
6009 | ||
7b38c368 TM |
6010 | /* |
6011 | * With sessions, the client is not marked ready until after a | |
6012 | * successful EXCHANGE_ID and CREATE_SESSION. | |
6013 | * | |
6014 | * Map errors cl_cons_state errors to EPROTONOSUPPORT to indicate | |
6015 | * other versions of NFS can be tried. | |
6016 | */ | |
6017 | static int nfs41_check_session_ready(struct nfs_client *clp) | |
6018 | { | |
6019 | int ret; | |
6020 | ||
6021 | if (clp->cl_cons_state == NFS_CS_SESSION_INITING) { | |
6022 | ret = nfs4_client_recover_expired_lease(clp); | |
6023 | if (ret) | |
6024 | return ret; | |
6025 | } | |
6026 | if (clp->cl_cons_state < NFS_CS_READY) | |
6027 | return -EPROTONOSUPPORT; | |
54ac471c | 6028 | smp_rmb(); |
7b38c368 TM |
6029 | return 0; |
6030 | } | |
6031 | ||
fccba804 TM |
6032 | int nfs4_init_session(struct nfs_server *server) |
6033 | { | |
6034 | struct nfs_client *clp = server->nfs_client; | |
2449ea2e | 6035 | struct nfs4_session *session; |
ae72ae67 TM |
6036 | unsigned int target_max_rqst_sz = NFS_MAX_FILE_IO_SIZE; |
6037 | unsigned int target_max_resp_sz = NFS_MAX_FILE_IO_SIZE; | |
fccba804 TM |
6038 | |
6039 | if (!nfs4_has_session(clp)) | |
6040 | return 0; | |
6041 | ||
ae72ae67 TM |
6042 | if (server->rsize != 0) |
6043 | target_max_resp_sz = server->rsize; | |
6044 | target_max_resp_sz += nfs41_maxread_overhead; | |
6045 | ||
6046 | if (server->wsize != 0) | |
6047 | target_max_rqst_sz = server->wsize; | |
6048 | target_max_rqst_sz += nfs41_maxwrite_overhead; | |
6049 | ||
1055d76d | 6050 | session = clp->cl_session; |
7b38c368 TM |
6051 | spin_lock(&clp->cl_lock); |
6052 | if (test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) { | |
ae72ae67 TM |
6053 | /* Initialise targets and channel attributes */ |
6054 | session->fc_target_max_rqst_sz = target_max_rqst_sz; | |
6055 | session->fc_attrs.max_rqst_sz = target_max_rqst_sz; | |
6056 | session->fc_target_max_resp_sz = target_max_resp_sz; | |
6057 | session->fc_attrs.max_resp_sz = target_max_resp_sz; | |
688a9024 TM |
6058 | } else { |
6059 | /* Just adjust the targets */ | |
6060 | if (target_max_rqst_sz > session->fc_target_max_rqst_sz) { | |
6061 | session->fc_target_max_rqst_sz = target_max_rqst_sz; | |
6062 | set_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state); | |
6063 | } | |
6064 | if (target_max_resp_sz > session->fc_target_max_resp_sz) { | |
6065 | session->fc_target_max_resp_sz = target_max_resp_sz; | |
6066 | set_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state); | |
6067 | } | |
7b38c368 TM |
6068 | } |
6069 | spin_unlock(&clp->cl_lock); | |
2449ea2e | 6070 | |
688a9024 TM |
6071 | if (test_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state)) |
6072 | nfs4_schedule_lease_recovery(clp); | |
6073 | ||
7b38c368 | 6074 | return nfs41_check_session_ready(clp); |
fccba804 TM |
6075 | } |
6076 | ||
7b38c368 | 6077 | int nfs4_init_ds_session(struct nfs_client *clp, unsigned long lease_time) |
d83217c1 AA |
6078 | { |
6079 | struct nfs4_session *session = clp->cl_session; | |
6080 | int ret; | |
6081 | ||
7b38c368 TM |
6082 | spin_lock(&clp->cl_lock); |
6083 | if (test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) { | |
6084 | /* | |
6085 | * Do not set NFS_CS_CHECK_LEASE_TIME instead set the | |
6086 | * DS lease to be equal to the MDS lease. | |
6087 | */ | |
6088 | clp->cl_lease_time = lease_time; | |
6089 | clp->cl_last_renewal = jiffies; | |
6090 | } | |
6091 | spin_unlock(&clp->cl_lock); | |
d83217c1 | 6092 | |
7b38c368 TM |
6093 | ret = nfs41_check_session_ready(clp); |
6094 | if (ret) | |
6095 | return ret; | |
6096 | /* Test for the DS role */ | |
6097 | if (!is_ds_client(clp)) | |
6098 | return -ENODEV; | |
6099 | return 0; | |
d83217c1 AA |
6100 | } |
6101 | EXPORT_SYMBOL_GPL(nfs4_init_ds_session); | |
6102 | ||
6103 | ||
fc01cea9 AA |
6104 | /* |
6105 | * Renew the cl_session lease. | |
6106 | */ | |
d5f8d3fe TM |
6107 | struct nfs4_sequence_data { |
6108 | struct nfs_client *clp; | |
6109 | struct nfs4_sequence_args args; | |
6110 | struct nfs4_sequence_res res; | |
6111 | }; | |
6112 | ||
dc96aef9 AB |
6113 | static void nfs41_sequence_release(void *data) |
6114 | { | |
d5f8d3fe TM |
6115 | struct nfs4_sequence_data *calldata = data; |
6116 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 6117 | |
7135840f AB |
6118 | if (atomic_read(&clp->cl_count) > 1) |
6119 | nfs4_schedule_state_renewal(clp); | |
6120 | nfs_put_client(clp); | |
d5f8d3fe | 6121 | kfree(calldata); |
dc96aef9 AB |
6122 | } |
6123 | ||
aa5190d0 TM |
6124 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
6125 | { | |
6126 | switch(task->tk_status) { | |
6127 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
6128 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
6129 | return -EAGAIN; | |
6130 | default: | |
0400a6b0 | 6131 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
6132 | } |
6133 | return 0; | |
6134 | } | |
6135 | ||
dc96aef9 | 6136 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 6137 | { |
d5f8d3fe TM |
6138 | struct nfs4_sequence_data *calldata = data; |
6139 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 6140 | |
14516c3a TM |
6141 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
6142 | return; | |
fc01cea9 AA |
6143 | |
6144 | if (task->tk_status < 0) { | |
6145 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
6146 | if (atomic_read(&clp->cl_count) == 1) |
6147 | goto out; | |
fc01cea9 | 6148 | |
aa5190d0 TM |
6149 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
6150 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
6151 | return; |
6152 | } | |
6153 | } | |
fc01cea9 | 6154 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 6155 | out: |
fc01cea9 AA |
6156 | dprintk("<-- %s\n", __func__); |
6157 | } | |
6158 | ||
6159 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
6160 | { | |
d5f8d3fe TM |
6161 | struct nfs4_sequence_data *calldata = data; |
6162 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
6163 | struct nfs4_sequence_args *args; |
6164 | struct nfs4_sequence_res *res; | |
6165 | ||
fc01cea9 AA |
6166 | args = task->tk_msg.rpc_argp; |
6167 | res = task->tk_msg.rpc_resp; | |
6168 | ||
9d12b216 | 6169 | if (nfs41_setup_sequence(clp->cl_session, args, res, task)) |
fc01cea9 AA |
6170 | return; |
6171 | rpc_call_start(task); | |
6172 | } | |
6173 | ||
6bdb5f21 BS |
6174 | static void nfs41_sequence_prepare_privileged(struct rpc_task *task, void *data) |
6175 | { | |
6176 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
6177 | nfs41_sequence_prepare(task, data); | |
6178 | } | |
6179 | ||
fc01cea9 AA |
6180 | static const struct rpc_call_ops nfs41_sequence_ops = { |
6181 | .rpc_call_done = nfs41_sequence_call_done, | |
6182 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 6183 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
6184 | }; |
6185 | ||
6bdb5f21 BS |
6186 | static const struct rpc_call_ops nfs41_sequence_privileged_ops = { |
6187 | .rpc_call_done = nfs41_sequence_call_done, | |
6188 | .rpc_call_prepare = nfs41_sequence_prepare_privileged, | |
6189 | .rpc_release = nfs41_sequence_release, | |
6190 | }; | |
6191 | ||
6192 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred, | |
6193 | const struct rpc_call_ops *seq_ops) | |
fc01cea9 | 6194 | { |
d5f8d3fe | 6195 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
6196 | struct rpc_message msg = { |
6197 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
6198 | .rpc_cred = cred, | |
6199 | }; | |
71ac6da9 TM |
6200 | struct rpc_task_setup task_setup_data = { |
6201 | .rpc_client = clp->cl_rpcclient, | |
6202 | .rpc_message = &msg, | |
6bdb5f21 | 6203 | .callback_ops = seq_ops, |
71ac6da9 TM |
6204 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, |
6205 | }; | |
fc01cea9 | 6206 | |
7135840f | 6207 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 6208 | return ERR_PTR(-EIO); |
dfb4f309 | 6209 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 6210 | if (calldata == NULL) { |
7135840f | 6211 | nfs_put_client(clp); |
71ac6da9 | 6212 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 6213 | } |
9d12b216 | 6214 | nfs41_init_sequence(&calldata->args, &calldata->res, 0); |
d5f8d3fe TM |
6215 | msg.rpc_argp = &calldata->args; |
6216 | msg.rpc_resp = &calldata->res; | |
6217 | calldata->clp = clp; | |
71ac6da9 | 6218 | task_setup_data.callback_data = calldata; |
fc01cea9 | 6219 | |
71ac6da9 TM |
6220 | return rpc_run_task(&task_setup_data); |
6221 | } | |
6222 | ||
2f60ea6b | 6223 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
6224 | { |
6225 | struct rpc_task *task; | |
6226 | int ret = 0; | |
6227 | ||
2f60ea6b TM |
6228 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
6229 | return 0; | |
6bdb5f21 | 6230 | task = _nfs41_proc_sequence(clp, cred, &nfs41_sequence_ops); |
71ac6da9 TM |
6231 | if (IS_ERR(task)) |
6232 | ret = PTR_ERR(task); | |
6233 | else | |
bf294b41 | 6234 | rpc_put_task_async(task); |
71ac6da9 TM |
6235 | dprintk("<-- %s status=%d\n", __func__, ret); |
6236 | return ret; | |
6237 | } | |
6238 | ||
6239 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
6240 | { | |
6241 | struct rpc_task *task; | |
6242 | int ret; | |
6243 | ||
6bdb5f21 | 6244 | task = _nfs41_proc_sequence(clp, cred, &nfs41_sequence_privileged_ops); |
71ac6da9 TM |
6245 | if (IS_ERR(task)) { |
6246 | ret = PTR_ERR(task); | |
6247 | goto out; | |
6248 | } | |
6249 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
6250 | if (!ret) { |
6251 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
6252 | ||
6253 | if (task->tk_status == 0) | |
6254 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 6255 | ret = task->tk_status; |
b4410c2f | 6256 | } |
71ac6da9 TM |
6257 | rpc_put_task(task); |
6258 | out: | |
6259 | dprintk("<-- %s status=%d\n", __func__, ret); | |
6260 | return ret; | |
fc01cea9 AA |
6261 | } |
6262 | ||
fce5c838 RL |
6263 | struct nfs4_reclaim_complete_data { |
6264 | struct nfs_client *clp; | |
6265 | struct nfs41_reclaim_complete_args arg; | |
6266 | struct nfs41_reclaim_complete_res res; | |
6267 | }; | |
6268 | ||
6269 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
6270 | { | |
6271 | struct nfs4_reclaim_complete_data *calldata = data; | |
6272 | ||
b257957e | 6273 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
035168ab TM |
6274 | if (nfs41_setup_sequence(calldata->clp->cl_session, |
6275 | &calldata->arg.seq_args, | |
9d12b216 | 6276 | &calldata->res.seq_res, task)) |
fce5c838 RL |
6277 | return; |
6278 | ||
6279 | rpc_call_start(task); | |
6280 | } | |
6281 | ||
aa5190d0 TM |
6282 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
6283 | { | |
6284 | switch(task->tk_status) { | |
6285 | case 0: | |
6286 | case -NFS4ERR_COMPLETE_ALREADY: | |
6287 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
6288 | break; | |
6289 | case -NFS4ERR_DELAY: | |
aa5190d0 | 6290 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
6291 | /* fall through */ |
6292 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
6293 | return -EAGAIN; |
6294 | default: | |
0400a6b0 | 6295 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
6296 | } |
6297 | return 0; | |
6298 | } | |
6299 | ||
fce5c838 RL |
6300 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
6301 | { | |
6302 | struct nfs4_reclaim_complete_data *calldata = data; | |
6303 | struct nfs_client *clp = calldata->clp; | |
6304 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
6305 | ||
6306 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
6307 | if (!nfs41_sequence_done(task, res)) |
6308 | return; | |
fce5c838 | 6309 | |
aa5190d0 TM |
6310 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
6311 | rpc_restart_call_prepare(task); | |
6312 | return; | |
6313 | } | |
fce5c838 RL |
6314 | dprintk("<-- %s\n", __func__); |
6315 | } | |
6316 | ||
6317 | static void nfs4_free_reclaim_complete_data(void *data) | |
6318 | { | |
6319 | struct nfs4_reclaim_complete_data *calldata = data; | |
6320 | ||
6321 | kfree(calldata); | |
6322 | } | |
6323 | ||
6324 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
6325 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
6326 | .rpc_call_done = nfs4_reclaim_complete_done, | |
6327 | .rpc_release = nfs4_free_reclaim_complete_data, | |
6328 | }; | |
6329 | ||
6330 | /* | |
6331 | * Issue a global reclaim complete. | |
6332 | */ | |
6333 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
6334 | { | |
6335 | struct nfs4_reclaim_complete_data *calldata; | |
6336 | struct rpc_task *task; | |
6337 | struct rpc_message msg = { | |
6338 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
6339 | }; | |
6340 | struct rpc_task_setup task_setup_data = { | |
6341 | .rpc_client = clp->cl_rpcclient, | |
6342 | .rpc_message = &msg, | |
6343 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
6344 | .flags = RPC_TASK_ASYNC, | |
6345 | }; | |
6346 | int status = -ENOMEM; | |
6347 | ||
6348 | dprintk("--> %s\n", __func__); | |
8535b2be | 6349 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
6350 | if (calldata == NULL) |
6351 | goto out; | |
6352 | calldata->clp = clp; | |
6353 | calldata->arg.one_fs = 0; | |
fce5c838 | 6354 | |
9d12b216 | 6355 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
fce5c838 RL |
6356 | msg.rpc_argp = &calldata->arg; |
6357 | msg.rpc_resp = &calldata->res; | |
6358 | task_setup_data.callback_data = calldata; | |
6359 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 6360 | if (IS_ERR(task)) { |
fce5c838 | 6361 | status = PTR_ERR(task); |
acf82b85 DC |
6362 | goto out; |
6363 | } | |
c34c32ea AA |
6364 | status = nfs4_wait_for_completion_rpc_task(task); |
6365 | if (status == 0) | |
6366 | status = task->tk_status; | |
fce5c838 | 6367 | rpc_put_task(task); |
acf82b85 | 6368 | return 0; |
fce5c838 RL |
6369 | out: |
6370 | dprintk("<-- %s status=%d\n", __func__, status); | |
6371 | return status; | |
6372 | } | |
b1f69b75 AA |
6373 | |
6374 | static void | |
6375 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
6376 | { | |
6377 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 6378 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
b1f69b75 AA |
6379 | |
6380 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
6381 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
6382 | * right now covering the LAYOUTGET we are about to send. | |
6383 | * However, that is not so catastrophic, and there seems | |
6384 | * to be no way to prevent it completely. | |
6385 | */ | |
b1f69b75 | 6386 | if (nfs4_setup_sequence(server, &lgp->args.seq_args, |
9d12b216 | 6387 | &lgp->res.seq_res, task)) |
b1f69b75 | 6388 | return; |
cf7d63f1 FI |
6389 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
6390 | NFS_I(lgp->args.inode)->layout, | |
6391 | lgp->args.ctx->state)) { | |
6392 | rpc_exit(task, NFS4_OK); | |
6393 | return; | |
6394 | } | |
b1f69b75 AA |
6395 | rpc_call_start(task); |
6396 | } | |
6397 | ||
6398 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
6399 | { | |
6400 | struct nfs4_layoutget *lgp = calldata; | |
ee314c2a TM |
6401 | struct inode *inode = lgp->args.inode; |
6402 | struct nfs_server *server = NFS_SERVER(inode); | |
6403 | struct pnfs_layout_hdr *lo; | |
6404 | struct nfs4_state *state = NULL; | |
b1f69b75 AA |
6405 | |
6406 | dprintk("--> %s\n", __func__); | |
6407 | ||
6408 | if (!nfs4_sequence_done(task, &lgp->res.seq_res)) | |
ee314c2a | 6409 | goto out; |
b1f69b75 AA |
6410 | |
6411 | switch (task->tk_status) { | |
6412 | case 0: | |
ee314c2a | 6413 | goto out; |
b1f69b75 AA |
6414 | case -NFS4ERR_LAYOUTTRYLATER: |
6415 | case -NFS4ERR_RECALLCONFLICT: | |
6416 | task->tk_status = -NFS4ERR_DELAY; | |
ee314c2a TM |
6417 | break; |
6418 | case -NFS4ERR_EXPIRED: | |
6419 | case -NFS4ERR_BAD_STATEID: | |
6420 | spin_lock(&inode->i_lock); | |
6421 | lo = NFS_I(inode)->layout; | |
6422 | if (!lo || list_empty(&lo->plh_segs)) { | |
6423 | spin_unlock(&inode->i_lock); | |
6424 | /* If the open stateid was bad, then recover it. */ | |
6425 | state = lgp->args.ctx->state; | |
6426 | } else { | |
6427 | LIST_HEAD(head); | |
6428 | ||
6429 | pnfs_mark_matching_lsegs_invalid(lo, &head, NULL); | |
6430 | spin_unlock(&inode->i_lock); | |
6431 | /* Mark the bad layout state as invalid, then | |
6432 | * retry using the open stateid. */ | |
6433 | pnfs_free_lseg_list(&head); | |
b1f69b75 AA |
6434 | } |
6435 | } | |
ee314c2a TM |
6436 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
6437 | rpc_restart_call_prepare(task); | |
6438 | out: | |
b1f69b75 AA |
6439 | dprintk("<-- %s\n", __func__); |
6440 | } | |
6441 | ||
8554116e IK |
6442 | static size_t max_response_pages(struct nfs_server *server) |
6443 | { | |
6444 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
6445 | return nfs_page_array_len(0, max_resp_sz); | |
6446 | } | |
6447 | ||
6448 | static void nfs4_free_pages(struct page **pages, size_t size) | |
6449 | { | |
6450 | int i; | |
6451 | ||
6452 | if (!pages) | |
6453 | return; | |
6454 | ||
6455 | for (i = 0; i < size; i++) { | |
6456 | if (!pages[i]) | |
6457 | break; | |
6458 | __free_page(pages[i]); | |
6459 | } | |
6460 | kfree(pages); | |
6461 | } | |
6462 | ||
6463 | static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) | |
6464 | { | |
6465 | struct page **pages; | |
6466 | int i; | |
6467 | ||
6468 | pages = kcalloc(size, sizeof(struct page *), gfp_flags); | |
6469 | if (!pages) { | |
6470 | dprintk("%s: can't alloc array of %zu pages\n", __func__, size); | |
6471 | return NULL; | |
6472 | } | |
6473 | ||
6474 | for (i = 0; i < size; i++) { | |
6475 | pages[i] = alloc_page(gfp_flags); | |
6476 | if (!pages[i]) { | |
6477 | dprintk("%s: failed to allocate page\n", __func__); | |
6478 | nfs4_free_pages(pages, size); | |
6479 | return NULL; | |
6480 | } | |
6481 | } | |
6482 | ||
6483 | return pages; | |
6484 | } | |
6485 | ||
b1f69b75 AA |
6486 | static void nfs4_layoutget_release(void *calldata) |
6487 | { | |
6488 | struct nfs4_layoutget *lgp = calldata; | |
8554116e IK |
6489 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6490 | size_t max_pages = max_response_pages(server); | |
b1f69b75 AA |
6491 | |
6492 | dprintk("--> %s\n", __func__); | |
8554116e | 6493 | nfs4_free_pages(lgp->args.layout.pages, max_pages); |
b1f69b75 AA |
6494 | put_nfs_open_context(lgp->args.ctx); |
6495 | kfree(calldata); | |
6496 | dprintk("<-- %s\n", __func__); | |
6497 | } | |
6498 | ||
6499 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
6500 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
6501 | .rpc_call_done = nfs4_layoutget_done, | |
6502 | .rpc_release = nfs4_layoutget_release, | |
6503 | }; | |
6504 | ||
a0b0a6e3 TM |
6505 | struct pnfs_layout_segment * |
6506 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags) | |
b1f69b75 AA |
6507 | { |
6508 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
8554116e | 6509 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
6510 | struct rpc_task *task; |
6511 | struct rpc_message msg = { | |
6512 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
6513 | .rpc_argp = &lgp->args, | |
6514 | .rpc_resp = &lgp->res, | |
6515 | }; | |
6516 | struct rpc_task_setup task_setup_data = { | |
6517 | .rpc_client = server->client, | |
6518 | .rpc_message = &msg, | |
6519 | .callback_ops = &nfs4_layoutget_call_ops, | |
6520 | .callback_data = lgp, | |
6521 | .flags = RPC_TASK_ASYNC, | |
6522 | }; | |
a0b0a6e3 | 6523 | struct pnfs_layout_segment *lseg = NULL; |
b1f69b75 AA |
6524 | int status = 0; |
6525 | ||
6526 | dprintk("--> %s\n", __func__); | |
6527 | ||
8554116e IK |
6528 | lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); |
6529 | if (!lgp->args.layout.pages) { | |
6530 | nfs4_layoutget_release(lgp); | |
a0b0a6e3 | 6531 | return ERR_PTR(-ENOMEM); |
8554116e IK |
6532 | } |
6533 | lgp->args.layout.pglen = max_pages * PAGE_SIZE; | |
6534 | ||
35124a09 | 6535 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 6536 | lgp->res.seq_res.sr_slot = NULL; |
9d12b216 | 6537 | nfs41_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
b1f69b75 AA |
6538 | task = rpc_run_task(&task_setup_data); |
6539 | if (IS_ERR(task)) | |
a0b0a6e3 | 6540 | return ERR_CAST(task); |
b1f69b75 | 6541 | status = nfs4_wait_for_completion_rpc_task(task); |
c31663d4 FI |
6542 | if (status == 0) |
6543 | status = task->tk_status; | |
6544 | if (status == 0) | |
a0b0a6e3 | 6545 | lseg = pnfs_layout_process(lgp); |
b1f69b75 AA |
6546 | rpc_put_task(task); |
6547 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
6548 | if (status) |
6549 | return ERR_PTR(status); | |
6550 | return lseg; | |
b1f69b75 AA |
6551 | } |
6552 | ||
cbe82603 BH |
6553 | static void |
6554 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
6555 | { | |
6556 | struct nfs4_layoutreturn *lrp = calldata; | |
6557 | ||
6558 | dprintk("--> %s\n", __func__); | |
6559 | if (nfs41_setup_sequence(lrp->clp->cl_session, &lrp->args.seq_args, | |
9d12b216 | 6560 | &lrp->res.seq_res, task)) |
cbe82603 BH |
6561 | return; |
6562 | rpc_call_start(task); | |
6563 | } | |
6564 | ||
6565 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
6566 | { | |
6567 | struct nfs4_layoutreturn *lrp = calldata; | |
6568 | struct nfs_server *server; | |
6569 | ||
6570 | dprintk("--> %s\n", __func__); | |
6571 | ||
6572 | if (!nfs4_sequence_done(task, &lrp->res.seq_res)) | |
6573 | return; | |
6574 | ||
6575 | server = NFS_SERVER(lrp->args.inode); | |
6576 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 6577 | rpc_restart_call_prepare(task); |
cbe82603 BH |
6578 | return; |
6579 | } | |
cbe82603 BH |
6580 | dprintk("<-- %s\n", __func__); |
6581 | } | |
6582 | ||
6583 | static void nfs4_layoutreturn_release(void *calldata) | |
6584 | { | |
6585 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 6586 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
6587 | |
6588 | dprintk("--> %s\n", __func__); | |
849b286f TM |
6589 | spin_lock(&lo->plh_inode->i_lock); |
6590 | if (lrp->res.lrs_present) | |
6591 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); | |
6592 | lo->plh_block_lgets--; | |
6593 | spin_unlock(&lo->plh_inode->i_lock); | |
70c3bd2b | 6594 | pnfs_put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
6595 | kfree(calldata); |
6596 | dprintk("<-- %s\n", __func__); | |
6597 | } | |
6598 | ||
6599 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
6600 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
6601 | .rpc_call_done = nfs4_layoutreturn_done, | |
6602 | .rpc_release = nfs4_layoutreturn_release, | |
6603 | }; | |
6604 | ||
6605 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
6606 | { | |
6607 | struct rpc_task *task; | |
6608 | struct rpc_message msg = { | |
6609 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
6610 | .rpc_argp = &lrp->args, | |
6611 | .rpc_resp = &lrp->res, | |
6612 | }; | |
6613 | struct rpc_task_setup task_setup_data = { | |
6614 | .rpc_client = lrp->clp->cl_rpcclient, | |
6615 | .rpc_message = &msg, | |
6616 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
6617 | .callback_data = lrp, | |
6618 | }; | |
6619 | int status; | |
6620 | ||
6621 | dprintk("--> %s\n", __func__); | |
9d12b216 | 6622 | nfs41_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
6623 | task = rpc_run_task(&task_setup_data); |
6624 | if (IS_ERR(task)) | |
6625 | return PTR_ERR(task); | |
6626 | status = task->tk_status; | |
6627 | dprintk("<-- %s status=%d\n", __func__, status); | |
6628 | rpc_put_task(task); | |
6629 | return status; | |
6630 | } | |
6631 | ||
7f11d8d3 AA |
6632 | /* |
6633 | * Retrieve the list of Data Server devices from the MDS. | |
6634 | */ | |
6635 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
6636 | const struct nfs_fh *fh, | |
6637 | struct pnfs_devicelist *devlist) | |
6638 | { | |
6639 | struct nfs4_getdevicelist_args args = { | |
6640 | .fh = fh, | |
6641 | .layoutclass = server->pnfs_curr_ld->id, | |
6642 | }; | |
6643 | struct nfs4_getdevicelist_res res = { | |
6644 | .devlist = devlist, | |
6645 | }; | |
6646 | struct rpc_message msg = { | |
6647 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
6648 | .rpc_argp = &args, | |
6649 | .rpc_resp = &res, | |
6650 | }; | |
6651 | int status; | |
6652 | ||
6653 | dprintk("--> %s\n", __func__); | |
6654 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
6655 | &res.seq_res, 0); | |
6656 | dprintk("<-- %s status=%d\n", __func__, status); | |
6657 | return status; | |
6658 | } | |
6659 | ||
6660 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
6661 | const struct nfs_fh *fh, | |
6662 | struct pnfs_devicelist *devlist) | |
6663 | { | |
6664 | struct nfs4_exception exception = { }; | |
6665 | int err; | |
6666 | ||
6667 | do { | |
6668 | err = nfs4_handle_exception(server, | |
6669 | _nfs4_getdevicelist(server, fh, devlist), | |
6670 | &exception); | |
6671 | } while (exception.retry); | |
6672 | ||
6673 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
6674 | err, devlist->num_devs); | |
6675 | ||
6676 | return err; | |
6677 | } | |
6678 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
6679 | ||
b1f69b75 AA |
6680 | static int |
6681 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6682 | { | |
6683 | struct nfs4_getdeviceinfo_args args = { | |
6684 | .pdev = pdev, | |
6685 | }; | |
6686 | struct nfs4_getdeviceinfo_res res = { | |
6687 | .pdev = pdev, | |
6688 | }; | |
6689 | struct rpc_message msg = { | |
6690 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
6691 | .rpc_argp = &args, | |
6692 | .rpc_resp = &res, | |
6693 | }; | |
6694 | int status; | |
6695 | ||
6696 | dprintk("--> %s\n", __func__); | |
7c513058 | 6697 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
6698 | dprintk("<-- %s status=%d\n", __func__, status); |
6699 | ||
6700 | return status; | |
6701 | } | |
6702 | ||
6703 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6704 | { | |
6705 | struct nfs4_exception exception = { }; | |
6706 | int err; | |
6707 | ||
6708 | do { | |
6709 | err = nfs4_handle_exception(server, | |
6710 | _nfs4_proc_getdeviceinfo(server, pdev), | |
6711 | &exception); | |
6712 | } while (exception.retry); | |
6713 | return err; | |
6714 | } | |
6715 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
6716 | ||
863a3c6c AA |
6717 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
6718 | { | |
6719 | struct nfs4_layoutcommit_data *data = calldata; | |
6720 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6721 | ||
6722 | if (nfs4_setup_sequence(server, &data->args.seq_args, | |
9d12b216 | 6723 | &data->res.seq_res, task)) |
863a3c6c AA |
6724 | return; |
6725 | rpc_call_start(task); | |
6726 | } | |
6727 | ||
6728 | static void | |
6729 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
6730 | { | |
6731 | struct nfs4_layoutcommit_data *data = calldata; | |
6732 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6733 | ||
6734 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
6735 | return; | |
6736 | ||
6737 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
6738 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
6739 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
6740 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
6741 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 6742 | task->tk_status = 0; |
e59d27e0 TM |
6743 | break; |
6744 | case 0: | |
863a3c6c AA |
6745 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
6746 | data->res.fattr); | |
e59d27e0 TM |
6747 | break; |
6748 | default: | |
6749 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
6750 | rpc_restart_call_prepare(task); | |
6751 | return; | |
6752 | } | |
6753 | } | |
863a3c6c AA |
6754 | } |
6755 | ||
6756 | static void nfs4_layoutcommit_release(void *calldata) | |
6757 | { | |
6758 | struct nfs4_layoutcommit_data *data = calldata; | |
a9bae566 | 6759 | struct pnfs_layout_segment *lseg, *tmp; |
92407e75 | 6760 | unsigned long *bitlock = &NFS_I(data->args.inode)->flags; |
863a3c6c | 6761 | |
db29c089 | 6762 | pnfs_cleanup_layoutcommit(data); |
863a3c6c | 6763 | /* Matched by references in pnfs_set_layoutcommit */ |
a9bae566 PT |
6764 | list_for_each_entry_safe(lseg, tmp, &data->lseg_list, pls_lc_list) { |
6765 | list_del_init(&lseg->pls_lc_list); | |
6766 | if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT, | |
6767 | &lseg->pls_flags)) | |
9369a431 | 6768 | pnfs_put_lseg(lseg); |
a9bae566 | 6769 | } |
92407e75 PT |
6770 | |
6771 | clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING, bitlock); | |
6772 | smp_mb__after_clear_bit(); | |
6773 | wake_up_bit(bitlock, NFS_INO_LAYOUTCOMMITTING); | |
6774 | ||
863a3c6c AA |
6775 | put_rpccred(data->cred); |
6776 | kfree(data); | |
6777 | } | |
6778 | ||
6779 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
6780 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
6781 | .rpc_call_done = nfs4_layoutcommit_done, | |
6782 | .rpc_release = nfs4_layoutcommit_release, | |
6783 | }; | |
6784 | ||
6785 | int | |
ef311537 | 6786 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
6787 | { |
6788 | struct rpc_message msg = { | |
6789 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
6790 | .rpc_argp = &data->args, | |
6791 | .rpc_resp = &data->res, | |
6792 | .rpc_cred = data->cred, | |
6793 | }; | |
6794 | struct rpc_task_setup task_setup_data = { | |
6795 | .task = &data->task, | |
6796 | .rpc_client = NFS_CLIENT(data->args.inode), | |
6797 | .rpc_message = &msg, | |
6798 | .callback_ops = &nfs4_layoutcommit_ops, | |
6799 | .callback_data = data, | |
6800 | .flags = RPC_TASK_ASYNC, | |
6801 | }; | |
6802 | struct rpc_task *task; | |
6803 | int status = 0; | |
6804 | ||
6805 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
6806 | "lbw: %llu inode %lu\n", | |
6807 | data->task.tk_pid, sync, | |
6808 | data->args.lastbytewritten, | |
6809 | data->args.inode->i_ino); | |
6810 | ||
9d12b216 | 6811 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
6812 | task = rpc_run_task(&task_setup_data); |
6813 | if (IS_ERR(task)) | |
6814 | return PTR_ERR(task); | |
ef311537 | 6815 | if (sync == false) |
863a3c6c AA |
6816 | goto out; |
6817 | status = nfs4_wait_for_completion_rpc_task(task); | |
6818 | if (status != 0) | |
6819 | goto out; | |
6820 | status = task->tk_status; | |
6821 | out: | |
6822 | dprintk("%s: status %d\n", __func__, status); | |
6823 | rpc_put_task(task); | |
6824 | return status; | |
6825 | } | |
fca78d6d BS |
6826 | |
6827 | static int | |
6828 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6829 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6830 | { | |
6831 | struct nfs41_secinfo_no_name_args args = { | |
6832 | .style = SECINFO_STYLE_CURRENT_FH, | |
6833 | }; | |
6834 | struct nfs4_secinfo_res res = { | |
6835 | .flavors = flavors, | |
6836 | }; | |
6837 | struct rpc_message msg = { | |
6838 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
6839 | .rpc_argp = &args, | |
6840 | .rpc_resp = &res, | |
6841 | }; | |
6842 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); | |
6843 | } | |
6844 | ||
6845 | static int | |
6846 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6847 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6848 | { | |
6849 | struct nfs4_exception exception = { }; | |
6850 | int err; | |
6851 | do { | |
6852 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6853 | switch (err) { | |
6854 | case 0: | |
6855 | case -NFS4ERR_WRONGSEC: | |
6856 | case -NFS4ERR_NOTSUPP: | |
05e9cfb4 | 6857 | goto out; |
fca78d6d BS |
6858 | default: |
6859 | err = nfs4_handle_exception(server, err, &exception); | |
6860 | } | |
6861 | } while (exception.retry); | |
05e9cfb4 | 6862 | out: |
fca78d6d BS |
6863 | return err; |
6864 | } | |
6865 | ||
6866 | static int | |
6867 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
6868 | struct nfs_fsinfo *info) | |
6869 | { | |
6870 | int err; | |
6871 | struct page *page; | |
6872 | rpc_authflavor_t flavor; | |
6873 | struct nfs4_secinfo_flavors *flavors; | |
6874 | ||
6875 | page = alloc_page(GFP_KERNEL); | |
6876 | if (!page) { | |
6877 | err = -ENOMEM; | |
6878 | goto out; | |
6879 | } | |
6880 | ||
6881 | flavors = page_address(page); | |
6882 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6883 | ||
6884 | /* | |
6885 | * Fall back on "guess and check" method if | |
6886 | * the server doesn't support SECINFO_NO_NAME | |
6887 | */ | |
6888 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
6889 | err = nfs4_find_root_sec(server, fhandle, info); | |
6890 | goto out_freepage; | |
6891 | } | |
6892 | if (err) | |
6893 | goto out_freepage; | |
6894 | ||
6895 | flavor = nfs_find_best_sec(flavors); | |
6896 | if (err == 0) | |
6897 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
6898 | ||
6899 | out_freepage: | |
6900 | put_page(page); | |
6901 | if (err == -EACCES) | |
6902 | return -EPERM; | |
6903 | out: | |
6904 | return err; | |
6905 | } | |
1cab0652 BS |
6906 | |
6907 | static int _nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) | |
7d974794 BS |
6908 | { |
6909 | int status; | |
6910 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 6911 | .stateid = stateid, |
7d974794 BS |
6912 | }; |
6913 | struct nfs41_test_stateid_res res; | |
6914 | struct rpc_message msg = { | |
6915 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
6916 | .rpc_argp = &args, | |
6917 | .rpc_resp = &res, | |
6918 | }; | |
1cab0652 | 6919 | |
38527b15 | 6920 | dprintk("NFS call test_stateid %p\n", stateid); |
9d12b216 | 6921 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
1cab0652 | 6922 | status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
38527b15 CL |
6923 | if (status != NFS_OK) { |
6924 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 6925 | return status; |
38527b15 CL |
6926 | } |
6927 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 6928 | return -res.status; |
7d974794 BS |
6929 | } |
6930 | ||
38527b15 CL |
6931 | /** |
6932 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
6933 | * | |
6934 | * @server: server / transport on which to perform the operation | |
6935 | * @stateid: state ID to test | |
6936 | * | |
6937 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
6938 | * Otherwise a negative NFS4ERR value is returned if the operation | |
6939 | * failed or the state ID is not currently valid. | |
6940 | */ | |
1cab0652 | 6941 | static int nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
7d974794 BS |
6942 | { |
6943 | struct nfs4_exception exception = { }; | |
6944 | int err; | |
6945 | do { | |
377e507d CL |
6946 | err = _nfs41_test_stateid(server, stateid); |
6947 | if (err != -NFS4ERR_DELAY) | |
6948 | break; | |
6949 | nfs4_handle_exception(server, err, &exception); | |
7d974794 BS |
6950 | } while (exception.retry); |
6951 | return err; | |
6952 | } | |
9aeda35f | 6953 | |
1cab0652 | 6954 | static int _nfs4_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f | 6955 | { |
9aeda35f | 6956 | struct nfs41_free_stateid_args args = { |
1cab0652 | 6957 | .stateid = stateid, |
9aeda35f BS |
6958 | }; |
6959 | struct nfs41_free_stateid_res res; | |
6960 | struct rpc_message msg = { | |
6961 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
6962 | .rpc_argp = &args, | |
6963 | .rpc_resp = &res, | |
6964 | }; | |
38527b15 | 6965 | int status; |
9aeda35f | 6966 | |
38527b15 | 6967 | dprintk("NFS call free_stateid %p\n", stateid); |
9d12b216 | 6968 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
38527b15 | 6969 | status = nfs4_call_sync_sequence(server->client, server, &msg, |
377e507d | 6970 | &args.seq_args, &res.seq_res, 1); |
38527b15 CL |
6971 | dprintk("NFS reply free_stateid: %d\n", status); |
6972 | return status; | |
9aeda35f BS |
6973 | } |
6974 | ||
38527b15 CL |
6975 | /** |
6976 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
6977 | * | |
6978 | * @server: server / transport on which to perform the operation | |
6979 | * @stateid: state ID to release | |
6980 | * | |
6981 | * Returns NFS_OK if the server freed "stateid". Otherwise a | |
6982 | * negative NFS4ERR value is returned. | |
6983 | */ | |
1cab0652 | 6984 | static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f BS |
6985 | { |
6986 | struct nfs4_exception exception = { }; | |
6987 | int err; | |
6988 | do { | |
377e507d CL |
6989 | err = _nfs4_free_stateid(server, stateid); |
6990 | if (err != -NFS4ERR_DELAY) | |
6991 | break; | |
6992 | nfs4_handle_exception(server, err, &exception); | |
9aeda35f BS |
6993 | } while (exception.retry); |
6994 | return err; | |
6995 | } | |
36281caa TM |
6996 | |
6997 | static bool nfs41_match_stateid(const nfs4_stateid *s1, | |
6998 | const nfs4_stateid *s2) | |
6999 | { | |
2d2f24ad | 7000 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
7001 | return false; |
7002 | ||
2d2f24ad | 7003 | if (s1->seqid == s2->seqid) |
36281caa | 7004 | return true; |
2d2f24ad | 7005 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
7006 | return true; |
7007 | ||
7008 | return false; | |
7009 | } | |
7010 | ||
557134a3 AA |
7011 | #endif /* CONFIG_NFS_V4_1 */ |
7012 | ||
36281caa TM |
7013 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
7014 | const nfs4_stateid *s2) | |
7015 | { | |
f597c537 | 7016 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
7017 | } |
7018 | ||
7019 | ||
17280175 | 7020 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 7021 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 7022 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
7023 | .recover_open = nfs4_open_reclaim, |
7024 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 7025 | .establish_clid = nfs4_init_clientid, |
90a16617 | 7026 | .get_clid_cred = nfs4_get_setclientid_cred, |
05f4c350 | 7027 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
7028 | }; |
7029 | ||
591d71cb | 7030 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 7031 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
7032 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
7033 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
7034 | .recover_open = nfs4_open_reclaim, | |
7035 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 7036 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 7037 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 7038 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 7039 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
7040 | }; |
7041 | #endif /* CONFIG_NFS_V4_1 */ | |
7042 | ||
17280175 | 7043 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
7044 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
7045 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
7046 | .recover_open = nfs4_open_expired, | |
7047 | .recover_lock = nfs4_lock_expired, | |
7048 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 7049 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
7050 | }; |
7051 | ||
7052 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 7053 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 7054 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 7055 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
7056 | .recover_open = nfs41_open_expired, |
7057 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 7058 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 7059 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 7060 | }; |
591d71cb | 7061 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 7062 | |
17280175 | 7063 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 7064 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 7065 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 7066 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
7067 | }; |
7068 | ||
7069 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 7070 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 7071 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 7072 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 7073 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
7074 | }; |
7075 | #endif | |
7076 | ||
97dc1359 TM |
7077 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
7078 | .minor_version = 0, | |
7079 | .call_sync = _nfs4_call_sync, | |
36281caa | 7080 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 7081 | .find_root_sec = nfs4_find_root_sec, |
c48f4f35 TM |
7082 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
7083 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
7084 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
7085 | }; |
7086 | ||
7087 | #if defined(CONFIG_NFS_V4_1) | |
7088 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
7089 | .minor_version = 1, | |
7090 | .call_sync = _nfs4_call_sync_session, | |
36281caa | 7091 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 7092 | .find_root_sec = nfs41_find_root_sec, |
c48f4f35 TM |
7093 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
7094 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
7095 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
7096 | }; |
7097 | #endif | |
7098 | ||
97dc1359 TM |
7099 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
7100 | [0] = &nfs_v4_0_minor_ops, | |
7101 | #if defined(CONFIG_NFS_V4_1) | |
7102 | [1] = &nfs_v4_1_minor_ops, | |
7103 | #endif | |
7104 | }; | |
7105 | ||
73a79706 BS |
7106 | const struct inode_operations nfs4_dir_inode_operations = { |
7107 | .create = nfs_create, | |
7108 | .lookup = nfs_lookup, | |
7109 | .atomic_open = nfs_atomic_open, | |
7110 | .link = nfs_link, | |
7111 | .unlink = nfs_unlink, | |
7112 | .symlink = nfs_symlink, | |
7113 | .mkdir = nfs_mkdir, | |
7114 | .rmdir = nfs_rmdir, | |
7115 | .mknod = nfs_mknod, | |
7116 | .rename = nfs_rename, | |
7117 | .permission = nfs_permission, | |
7118 | .getattr = nfs_getattr, | |
7119 | .setattr = nfs_setattr, | |
7120 | .getxattr = generic_getxattr, | |
7121 | .setxattr = generic_setxattr, | |
7122 | .listxattr = generic_listxattr, | |
7123 | .removexattr = generic_removexattr, | |
7124 | }; | |
7125 | ||
92e1d5be | 7126 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
7127 | .permission = nfs_permission, |
7128 | .getattr = nfs_getattr, | |
7129 | .setattr = nfs_setattr, | |
64c2ce8b AK |
7130 | .getxattr = generic_getxattr, |
7131 | .setxattr = generic_setxattr, | |
7132 | .listxattr = generic_listxattr, | |
7133 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
7134 | }; |
7135 | ||
509de811 | 7136 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
7137 | .version = 4, /* protocol version */ |
7138 | .dentry_ops = &nfs4_dentry_operations, | |
7139 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 7140 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 7141 | .file_ops = &nfs4_file_operations, |
1da177e4 | 7142 | .getroot = nfs4_proc_get_root, |
281cad46 | 7143 | .submount = nfs4_submount, |
ff9099f2 | 7144 | .try_mount = nfs4_try_mount, |
1da177e4 LT |
7145 | .getattr = nfs4_proc_getattr, |
7146 | .setattr = nfs4_proc_setattr, | |
7147 | .lookup = nfs4_proc_lookup, | |
7148 | .access = nfs4_proc_access, | |
7149 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
7150 | .create = nfs4_proc_create, |
7151 | .remove = nfs4_proc_remove, | |
7152 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 7153 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 LT |
7154 | .unlink_done = nfs4_proc_unlink_done, |
7155 | .rename = nfs4_proc_rename, | |
d3d4152a | 7156 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 7157 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 7158 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
7159 | .link = nfs4_proc_link, |
7160 | .symlink = nfs4_proc_symlink, | |
7161 | .mkdir = nfs4_proc_mkdir, | |
7162 | .rmdir = nfs4_proc_remove, | |
7163 | .readdir = nfs4_proc_readdir, | |
7164 | .mknod = nfs4_proc_mknod, | |
7165 | .statfs = nfs4_proc_statfs, | |
7166 | .fsinfo = nfs4_proc_fsinfo, | |
7167 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 7168 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
7169 | .decode_dirent = nfs4_decode_dirent, |
7170 | .read_setup = nfs4_proc_read_setup, | |
1abb5088 | 7171 | .read_pageio_init = pnfs_pageio_init_read, |
ea7c3303 | 7172 | .read_rpc_prepare = nfs4_proc_read_rpc_prepare, |
ec06c096 | 7173 | .read_done = nfs4_read_done, |
1da177e4 | 7174 | .write_setup = nfs4_proc_write_setup, |
57208fa7 | 7175 | .write_pageio_init = pnfs_pageio_init_write, |
c6cb80d0 | 7176 | .write_rpc_prepare = nfs4_proc_write_rpc_prepare, |
788e7a89 | 7177 | .write_done = nfs4_write_done, |
1da177e4 | 7178 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 7179 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 7180 | .commit_done = nfs4_commit_done, |
1da177e4 | 7181 | .lock = nfs4_proc_lock, |
e50a1c2e | 7182 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 7183 | .close_context = nfs4_close_context, |
2b484297 | 7184 | .open_context = nfs4_atomic_open, |
011e2a7f | 7185 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 7186 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 7187 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 7188 | .init_client = nfs4_init_client, |
cdb7eced | 7189 | .free_client = nfs4_free_client, |
1179acc6 BS |
7190 | .create_server = nfs4_create_server, |
7191 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
7192 | }; |
7193 | ||
64c2ce8b AK |
7194 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
7195 | .prefix = XATTR_NAME_NFSV4_ACL, | |
7196 | .list = nfs4_xattr_list_nfs4_acl, | |
7197 | .get = nfs4_xattr_get_nfs4_acl, | |
7198 | .set = nfs4_xattr_set_nfs4_acl, | |
7199 | }; | |
7200 | ||
7201 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
7202 | &nfs4_xattr_nfs4_acl_handler, | |
7203 | NULL | |
7204 | }; | |
7205 | ||
1da177e4 LT |
7206 | /* |
7207 | * Local variables: | |
7208 | * c-basic-offset: 8 | |
7209 | * End: | |
7210 | */ |