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 LT |
208 | |
209 | BUG_ON(readdir->count < 80); | |
210 | if (cookie > 2) { | |
b7ef1956 | 211 | readdir->cookie = cookie; |
1da177e4 LT |
212 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
213 | return; | |
214 | } | |
215 | ||
216 | readdir->cookie = 0; | |
217 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
218 | if (cookie == 2) | |
219 | return; | |
220 | ||
221 | /* | |
222 | * NFSv4 servers do not return entries for '.' and '..' | |
223 | * Therefore, we fake these entries here. We let '.' | |
224 | * have cookie 0 and '..' have cookie 1. Note that | |
225 | * when talking to the server, we always send cookie 0 | |
226 | * instead of 1 or 2. | |
227 | */ | |
2b86ce2d | 228 | start = p = kmap_atomic(*readdir->pages); |
1da177e4 LT |
229 | |
230 | if (cookie == 0) { | |
231 | *p++ = xdr_one; /* next */ | |
232 | *p++ = xdr_zero; /* cookie, first word */ | |
233 | *p++ = xdr_one; /* cookie, second word */ | |
234 | *p++ = xdr_one; /* entry len */ | |
235 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
236 | p++; | |
237 | *p++ = xdr_one; /* bitmap length */ | |
238 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
239 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 240 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
241 | } |
242 | ||
243 | *p++ = xdr_one; /* next */ | |
244 | *p++ = xdr_zero; /* cookie, first word */ | |
245 | *p++ = xdr_two; /* cookie, second word */ | |
246 | *p++ = xdr_two; /* entry len */ | |
247 | memcpy(p, "..\0\0", 4); /* entry */ | |
248 | p++; | |
249 | *p++ = xdr_one; /* bitmap length */ | |
250 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
251 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 252 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
253 | |
254 | readdir->pgbase = (char *)p - (char *)start; | |
255 | readdir->count -= readdir->pgbase; | |
2b86ce2d | 256 | kunmap_atomic(start); |
1da177e4 LT |
257 | } |
258 | ||
65de872e TM |
259 | static int nfs4_wait_clnt_recover(struct nfs_client *clp) |
260 | { | |
261 | int res; | |
262 | ||
263 | might_sleep(); | |
264 | ||
e005e804 | 265 | res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING, |
72cb77f4 | 266 | nfs_wait_bit_killable, TASK_KILLABLE); |
46a87b8a CL |
267 | if (res) |
268 | return res; | |
269 | ||
270 | if (clp->cl_cons_state < 0) | |
271 | return clp->cl_cons_state; | |
272 | return 0; | |
65de872e TM |
273 | } |
274 | ||
275 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) | |
276 | { | |
277 | int res = 0; | |
278 | ||
279 | might_sleep(); | |
280 | ||
281 | if (*timeout <= 0) | |
282 | *timeout = NFS4_POLL_RETRY_MIN; | |
283 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
284 | *timeout = NFS4_POLL_RETRY_MAX; | |
d310310c | 285 | freezable_schedule_timeout_killable(*timeout); |
65de872e TM |
286 | if (fatal_signal_pending(current)) |
287 | res = -ERESTARTSYS; | |
288 | *timeout <<= 1; | |
289 | return res; | |
290 | } | |
291 | ||
292 | /* This is the error handling routine for processes that are allowed | |
293 | * to sleep. | |
294 | */ | |
b064eca2 | 295 | static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
65de872e TM |
296 | { |
297 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 298 | struct nfs4_state *state = exception->state; |
3114ea7a | 299 | struct inode *inode = exception->inode; |
65de872e TM |
300 | int ret = errorcode; |
301 | ||
302 | exception->retry = 0; | |
303 | switch(errorcode) { | |
304 | case 0: | |
305 | return 0; | |
3114ea7a | 306 | case -NFS4ERR_OPENMODE: |
011e2a7f | 307 | if (inode && nfs4_have_delegation(inode, FMODE_READ)) { |
57ec14c5 | 308 | nfs4_inode_return_delegation(inode); |
3114ea7a TM |
309 | exception->retry = 1; |
310 | return 0; | |
311 | } | |
312 | if (state == NULL) | |
313 | break; | |
314 | nfs4_schedule_stateid_recovery(server, state); | |
315 | goto wait_on_recovery; | |
a1d0b5ee | 316 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
317 | case -NFS4ERR_ADMIN_REVOKED: |
318 | case -NFS4ERR_BAD_STATEID: | |
9e33bed5 TM |
319 | if (state == NULL) |
320 | break; | |
14977489 | 321 | nfs_remove_bad_delegation(state->inode); |
0400a6b0 TM |
322 | nfs4_schedule_stateid_recovery(server, state); |
323 | goto wait_on_recovery; | |
0ced63d1 TM |
324 | case -NFS4ERR_EXPIRED: |
325 | if (state != NULL) | |
326 | nfs4_schedule_stateid_recovery(server, state); | |
65de872e | 327 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 328 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
329 | nfs4_schedule_lease_recovery(clp); |
330 | goto wait_on_recovery; | |
03391693 | 331 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
332 | case -NFS4ERR_BADSESSION: |
333 | case -NFS4ERR_BADSLOT: | |
334 | case -NFS4ERR_BAD_HIGH_SLOT: | |
335 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
336 | case -NFS4ERR_DEADSESSION: | |
337 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
338 | case -NFS4ERR_SEQ_MISORDERED: | |
339 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
340 | errorcode); | |
9f594791 | 341 | nfs4_schedule_session_recovery(clp->cl_session, errorcode); |
399f11c3 | 342 | goto wait_on_recovery; |
03391693 | 343 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 344 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
345 | if (exception->timeout > HZ) { |
346 | /* We have retried a decent amount, time to | |
347 | * fail | |
348 | */ | |
349 | ret = -EBUSY; | |
350 | break; | |
351 | } | |
65de872e TM |
352 | case -NFS4ERR_GRACE: |
353 | case -NFS4ERR_DELAY: | |
2c643488 | 354 | case -EKEYEXPIRED: |
65de872e TM |
355 | ret = nfs4_delay(server->client, &exception->timeout); |
356 | if (ret != 0) | |
357 | break; | |
a8a4ae3a | 358 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
359 | case -NFS4ERR_OLD_STATEID: |
360 | exception->retry = 1; | |
b064eca2 TM |
361 | break; |
362 | case -NFS4ERR_BADOWNER: | |
363 | /* The following works around a Linux server bug! */ | |
364 | case -NFS4ERR_BADNAME: | |
365 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
366 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
367 | exception->retry = 1; | |
368 | printk(KERN_WARNING "NFS: v4 server %s " | |
369 | "does not accept raw " | |
370 | "uid/gids. " | |
371 | "Reenabling the idmapper.\n", | |
372 | server->nfs_client->cl_hostname); | |
373 | } | |
65de872e TM |
374 | } |
375 | /* We failed to handle the error */ | |
376 | return nfs4_map_errors(ret); | |
0400a6b0 | 377 | wait_on_recovery: |
a2c0b9e2 TM |
378 | ret = nfs4_wait_clnt_recover(clp); |
379 | if (ret == 0) | |
380 | exception->retry = 1; | |
381 | return ret; | |
65de872e TM |
382 | } |
383 | ||
384 | ||
452e9352 | 385 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 386 | { |
1da177e4 LT |
387 | spin_lock(&clp->cl_lock); |
388 | if (time_before(clp->cl_last_renewal,timestamp)) | |
389 | clp->cl_last_renewal = timestamp; | |
390 | spin_unlock(&clp->cl_lock); | |
391 | } | |
392 | ||
452e9352 TM |
393 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
394 | { | |
395 | do_renew_lease(server->nfs_client, timestamp); | |
396 | } | |
397 | ||
cccef3b9 AA |
398 | #if defined(CONFIG_NFS_V4_1) |
399 | ||
e2c4ab3c AA |
400 | /* |
401 | * nfs4_free_slot - free a slot and efficiently update slot table. | |
402 | * | |
403 | * freeing a slot is trivially done by clearing its respective bit | |
404 | * in the bitmap. | |
405 | * If the freed slotid equals highest_used_slotid we want to update it | |
406 | * so that the server would be able to size down the slot table if needed, | |
407 | * otherwise we know that the highest_used_slotid is still in use. | |
408 | * When updating highest_used_slotid there may be "holes" in the bitmap | |
409 | * so we need to scan down from highest_used_slotid to 0 looking for the now | |
410 | * highest slotid in use. | |
45d43c29 | 411 | * If none found, highest_used_slotid is set to NFS4_NO_SLOT. |
35dc1d74 TM |
412 | * |
413 | * Must be called while holding tbl->slot_tbl_lock | |
e2c4ab3c AA |
414 | */ |
415 | static void | |
45d43c29 | 416 | nfs4_free_slot(struct nfs4_slot_table *tbl, u32 slotid) |
e2c4ab3c | 417 | { |
45d43c29 | 418 | BUG_ON(slotid >= NFS4_MAX_SLOT_TABLE); |
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) { | |
424 | slotid = find_last_bit(tbl->used_slots, tbl->max_slots); | |
bcb56164 | 425 | if (slotid < tbl->max_slots) |
e2c4ab3c AA |
426 | tbl->highest_used_slotid = slotid; |
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 AA |
471 | { |
472 | struct nfs4_slot_table *tbl; | |
473 | ||
d185a334 | 474 | tbl = &res->sr_session->fc_slot_table; |
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 | } |
ea028ac9 | 481 | |
35dc1d74 | 482 | spin_lock(&tbl->slot_tbl_lock); |
aabd0b40 | 483 | nfs4_free_slot(tbl, res->sr_slot - tbl->slots); |
42acd021 | 484 | nfs4_check_drain_fc_complete(res->sr_session); |
35dc1d74 | 485 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 486 | res->sr_slot = NULL; |
13615871 AA |
487 | } |
488 | ||
14516c3a | 489 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c AA |
490 | { |
491 | unsigned long timestamp; | |
14516c3a | 492 | struct nfs_client *clp; |
b0df806c AA |
493 | |
494 | /* | |
495 | * sr_status remains 1 if an RPC level error occurred. The server | |
496 | * may or may not have processed the sequence operation.. | |
497 | * Proceed as if the server received and processed the sequence | |
498 | * operation. | |
499 | */ | |
500 | if (res->sr_status == 1) | |
501 | res->sr_status = NFS_OK; | |
502 | ||
468f8613 BS |
503 | /* don't increment the sequence number if the task wasn't sent */ |
504 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
505 | goto out; |
506 | ||
691daf3b | 507 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
508 | switch (res->sr_status) { |
509 | case 0: | |
b0df806c | 510 | /* Update the slot's sequence and clientid lease timer */ |
dfb4f309 | 511 | ++res->sr_slot->seq_nr; |
b0df806c | 512 | timestamp = res->sr_renewal_time; |
14516c3a | 513 | clp = res->sr_session->clp; |
452e9352 | 514 | do_renew_lease(clp, timestamp); |
0629e370 | 515 | /* Check sequence flags */ |
b4410c2f TM |
516 | if (res->sr_status_flags != 0) |
517 | nfs4_schedule_lease_recovery(clp); | |
14516c3a TM |
518 | break; |
519 | case -NFS4ERR_DELAY: | |
520 | /* The server detected a resend of the RPC call and | |
521 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
522 | * of RFC5661. | |
523 | */ | |
12364a4f | 524 | dprintk("%s: slot=%td seq=%d: Operation in progress\n", |
dfb4f309 BH |
525 | __func__, |
526 | res->sr_slot - res->sr_session->fc_slot_table.slots, | |
527 | res->sr_slot->seq_nr); | |
14516c3a TM |
528 | goto out_retry; |
529 | default: | |
530 | /* Just update the slot sequence no. */ | |
dfb4f309 | 531 | ++res->sr_slot->seq_nr; |
b0df806c AA |
532 | } |
533 | out: | |
534 | /* The session may be reset by one of the error handlers. */ | |
535 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 536 | nfs41_sequence_free_slot(res); |
14516c3a TM |
537 | return 1; |
538 | out_retry: | |
d05dd4e9 | 539 | if (!rpc_restart_call(task)) |
14516c3a TM |
540 | goto out; |
541 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
542 | return 0; | |
b0df806c AA |
543 | } |
544 | ||
14516c3a TM |
545 | static int nfs4_sequence_done(struct rpc_task *task, |
546 | struct nfs4_sequence_res *res) | |
df896455 | 547 | { |
14516c3a TM |
548 | if (res->sr_session == NULL) |
549 | return 1; | |
550 | return nfs41_sequence_done(task, res); | |
df896455 TM |
551 | } |
552 | ||
510b8175 BH |
553 | /* |
554 | * nfs4_find_slot - efficiently look for a free slot | |
555 | * | |
556 | * nfs4_find_slot looks for an unset bit in the used_slots bitmap. | |
557 | * If found, we mark the slot as used, update the highest_used_slotid, | |
558 | * and respectively set up the sequence operation args. | |
45d43c29 | 559 | * The slot number is returned if found, or NFS4_NO_SLOT otherwise. |
fbcd4abc AA |
560 | * |
561 | * Note: must be called with under the slot_tbl_lock. | |
510b8175 | 562 | */ |
45d43c29 | 563 | static u32 |
40ead580 | 564 | nfs4_find_slot(struct nfs4_slot_table *tbl) |
510b8175 | 565 | { |
45d43c29 TM |
566 | u32 slotid; |
567 | u32 ret_id = NFS4_NO_SLOT; | |
510b8175 | 568 | |
45d43c29 | 569 | dprintk("--> %s used_slots=%04lx highest_used=%u max_slots=%u\n", |
510b8175 BH |
570 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, |
571 | tbl->max_slots); | |
572 | slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots); | |
573 | if (slotid >= tbl->max_slots) | |
574 | goto out; | |
575 | __set_bit(slotid, tbl->used_slots); | |
45d43c29 TM |
576 | if (slotid > tbl->highest_used_slotid || |
577 | tbl->highest_used_slotid == NFS4_NO_SLOT) | |
510b8175 BH |
578 | tbl->highest_used_slotid = slotid; |
579 | ret_id = slotid; | |
580 | out: | |
581 | dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n", | |
582 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, ret_id); | |
510b8175 BH |
583 | return ret_id; |
584 | } | |
585 | ||
9d12b216 TM |
586 | static void nfs41_init_sequence(struct nfs4_sequence_args *args, |
587 | struct nfs4_sequence_res *res, int cache_reply) | |
588 | { | |
589 | args->sa_session = NULL; | |
590 | args->sa_cache_this = 0; | |
591 | if (cache_reply) | |
592 | args->sa_cache_this = 1; | |
593 | res->sr_session = NULL; | |
594 | res->sr_slot = NULL; | |
595 | } | |
596 | ||
dc70d7b3 | 597 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
598 | struct nfs4_sequence_args *args, |
599 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
600 | struct rpc_task *task) |
601 | { | |
fbcd4abc AA |
602 | struct nfs4_slot *slot; |
603 | struct nfs4_slot_table *tbl; | |
45d43c29 | 604 | u32 slotid; |
fbcd4abc AA |
605 | |
606 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 607 | /* slot already allocated? */ |
dfb4f309 | 608 | if (res->sr_slot != NULL) |
ce5039c1 AA |
609 | return 0; |
610 | ||
fbcd4abc AA |
611 | tbl = &session->fc_slot_table; |
612 | ||
613 | spin_lock(&tbl->slot_tbl_lock); | |
a2118c33 | 614 | if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) && |
5601a00d | 615 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { |
0b1c8fc4 | 616 | /* The state manager will wait until the slot table is empty */ |
05f0d236 | 617 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
b069d94a | 618 | spin_unlock(&tbl->slot_tbl_lock); |
0b1c8fc4 | 619 | dprintk("%s session is draining\n", __func__); |
05f0d236 | 620 | return -EAGAIN; |
b069d94a AA |
621 | } |
622 | ||
689cf5c1 AB |
623 | if (!rpc_queue_empty(&tbl->slot_tbl_waitq) && |
624 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { | |
625 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
626 | spin_unlock(&tbl->slot_tbl_lock); | |
627 | dprintk("%s enforce FIFO order\n", __func__); | |
628 | return -EAGAIN; | |
629 | } | |
630 | ||
40ead580 | 631 | slotid = nfs4_find_slot(tbl); |
45d43c29 | 632 | if (slotid == NFS4_NO_SLOT) { |
fbcd4abc AA |
633 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
634 | spin_unlock(&tbl->slot_tbl_lock); | |
635 | dprintk("<-- %s: no free slots\n", __func__); | |
636 | return -EAGAIN; | |
637 | } | |
638 | spin_unlock(&tbl->slot_tbl_lock); | |
639 | ||
689cf5c1 | 640 | rpc_task_set_priority(task, RPC_PRIORITY_NORMAL); |
fbcd4abc | 641 | slot = tbl->slots + slotid; |
99fe60d0 | 642 | args->sa_session = session; |
fbcd4abc | 643 | args->sa_slotid = slotid; |
fbcd4abc AA |
644 | |
645 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr); | |
646 | ||
99fe60d0 | 647 | res->sr_session = session; |
dfb4f309 | 648 | res->sr_slot = slot; |
fbcd4abc | 649 | res->sr_renewal_time = jiffies; |
2a6e26cd | 650 | res->sr_status_flags = 0; |
fbcd4abc AA |
651 | /* |
652 | * sr_status is only set in decode_sequence, and so will remain | |
653 | * set to 1 if an rpc level failure occurs. | |
654 | */ | |
655 | res->sr_status = 1; | |
ce5039c1 AA |
656 | return 0; |
657 | } | |
dc70d7b3 | 658 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 659 | |
035168ab | 660 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
661 | struct nfs4_sequence_args *args, |
662 | struct nfs4_sequence_res *res, | |
ce5039c1 AA |
663 | struct rpc_task *task) |
664 | { | |
035168ab | 665 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
666 | int ret = 0; |
667 | ||
9d12b216 | 668 | if (session == NULL) |
035168ab | 669 | goto out; |
035168ab | 670 | |
12364a4f | 671 | dprintk("--> %s clp %p session %p sr_slot %td\n", |
dfb4f309 BH |
672 | __func__, session->clp, session, res->sr_slot ? |
673 | res->sr_slot - session->fc_slot_table.slots : -1); | |
ce5039c1 | 674 | |
9d12b216 | 675 | ret = nfs41_setup_sequence(session, args, res, task); |
ce5039c1 AA |
676 | out: |
677 | dprintk("<-- %s status=%d\n", __func__, ret); | |
678 | return ret; | |
679 | } | |
680 | ||
681 | struct nfs41_call_sync_data { | |
035168ab | 682 | const struct nfs_server *seq_server; |
ce5039c1 AA |
683 | struct nfs4_sequence_args *seq_args; |
684 | struct nfs4_sequence_res *seq_res; | |
ce5039c1 AA |
685 | }; |
686 | ||
687 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
688 | { | |
689 | struct nfs41_call_sync_data *data = calldata; | |
690 | ||
035168ab TM |
691 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
692 | ||
693 | if (nfs4_setup_sequence(data->seq_server, data->seq_args, | |
9d12b216 | 694 | data->seq_res, task)) |
ce5039c1 AA |
695 | return; |
696 | rpc_call_start(task); | |
697 | } | |
698 | ||
b257957e AB |
699 | static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata) |
700 | { | |
701 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
702 | nfs41_call_sync_prepare(task, calldata); | |
703 | } | |
704 | ||
69ab40c4 AA |
705 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
706 | { | |
707 | struct nfs41_call_sync_data *data = calldata; | |
708 | ||
14516c3a | 709 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
710 | } |
711 | ||
17280175 | 712 | static const struct rpc_call_ops nfs41_call_sync_ops = { |
ce5039c1 | 713 | .rpc_call_prepare = nfs41_call_sync_prepare, |
69ab40c4 | 714 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
715 | }; |
716 | ||
17280175 | 717 | static const struct rpc_call_ops nfs41_call_priv_sync_ops = { |
b257957e AB |
718 | .rpc_call_prepare = nfs41_call_priv_sync_prepare, |
719 | .rpc_call_done = nfs41_call_sync_done, | |
720 | }; | |
721 | ||
7c513058 BS |
722 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
723 | struct nfs_server *server, | |
ce5039c1 AA |
724 | struct rpc_message *msg, |
725 | struct nfs4_sequence_args *args, | |
726 | struct nfs4_sequence_res *res, | |
b257957e | 727 | int privileged) |
ce5039c1 AA |
728 | { |
729 | int ret; | |
730 | struct rpc_task *task; | |
731 | struct nfs41_call_sync_data data = { | |
035168ab | 732 | .seq_server = server, |
ce5039c1 AA |
733 | .seq_args = args, |
734 | .seq_res = res, | |
ce5039c1 AA |
735 | }; |
736 | struct rpc_task_setup task_setup = { | |
7c513058 | 737 | .rpc_client = clnt, |
ce5039c1 AA |
738 | .rpc_message = msg, |
739 | .callback_ops = &nfs41_call_sync_ops, | |
740 | .callback_data = &data | |
741 | }; | |
742 | ||
b257957e AB |
743 | if (privileged) |
744 | task_setup.callback_ops = &nfs41_call_priv_sync_ops; | |
ce5039c1 AA |
745 | task = rpc_run_task(&task_setup); |
746 | if (IS_ERR(task)) | |
747 | ret = PTR_ERR(task); | |
748 | else { | |
749 | ret = task->tk_status; | |
750 | rpc_put_task(task); | |
751 | } | |
752 | return ret; | |
753 | } | |
754 | ||
7c513058 BS |
755 | int _nfs4_call_sync_session(struct rpc_clnt *clnt, |
756 | struct nfs_server *server, | |
cccef3b9 AA |
757 | struct rpc_message *msg, |
758 | struct nfs4_sequence_args *args, | |
759 | struct nfs4_sequence_res *res, | |
760 | int cache_reply) | |
761 | { | |
9d12b216 TM |
762 | nfs41_init_sequence(args, res, cache_reply); |
763 | return nfs4_call_sync_sequence(clnt, server, msg, args, res, 0); | |
cccef3b9 AA |
764 | } |
765 | ||
df896455 | 766 | #else |
9d12b216 TM |
767 | static inline |
768 | void nfs41_init_sequence(struct nfs4_sequence_args *args, | |
769 | struct nfs4_sequence_res *res, int cache_reply) | |
770 | { | |
771 | } | |
772 | ||
14516c3a TM |
773 | static int nfs4_sequence_done(struct rpc_task *task, |
774 | struct nfs4_sequence_res *res) | |
df896455 | 775 | { |
14516c3a | 776 | return 1; |
df896455 | 777 | } |
cccef3b9 AA |
778 | #endif /* CONFIG_NFS_V4_1 */ |
779 | ||
7c513058 BS |
780 | int _nfs4_call_sync(struct rpc_clnt *clnt, |
781 | struct nfs_server *server, | |
cccef3b9 AA |
782 | struct rpc_message *msg, |
783 | struct nfs4_sequence_args *args, | |
784 | struct nfs4_sequence_res *res, | |
785 | int cache_reply) | |
786 | { | |
9d12b216 | 787 | nfs41_init_sequence(args, res, cache_reply); |
7c513058 | 788 | return rpc_call_sync(clnt, msg, 0); |
cccef3b9 AA |
789 | } |
790 | ||
e73b83f2 | 791 | static inline |
7c513058 BS |
792 | int nfs4_call_sync(struct rpc_clnt *clnt, |
793 | struct nfs_server *server, | |
e73b83f2 BS |
794 | struct rpc_message *msg, |
795 | struct nfs4_sequence_args *args, | |
796 | struct nfs4_sequence_res *res, | |
797 | int cache_reply) | |
798 | { | |
7c513058 BS |
799 | return server->nfs_client->cl_mvops->call_sync(clnt, server, msg, |
800 | args, res, cache_reply); | |
e73b83f2 | 801 | } |
cccef3b9 | 802 | |
38478b24 | 803 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 804 | { |
38478b24 | 805 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 806 | |
38478b24 | 807 | spin_lock(&dir->i_lock); |
359d7d1c | 808 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; |
a9a4a87a | 809 | if (!cinfo->atomic || cinfo->before != dir->i_version) |
bfc69a45 | 810 | nfs_force_lookup_revalidate(dir); |
a9a4a87a | 811 | dir->i_version = cinfo->after; |
38478b24 | 812 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
813 | } |
814 | ||
e56e0b78 | 815 | struct nfs4_opendata { |
c6d00e63 | 816 | struct kref kref; |
e56e0b78 TM |
817 | struct nfs_openargs o_arg; |
818 | struct nfs_openres o_res; | |
cdd4e68b TM |
819 | struct nfs_open_confirmargs c_arg; |
820 | struct nfs_open_confirmres c_res; | |
6926afd1 TM |
821 | struct nfs4_string owner_name; |
822 | struct nfs4_string group_name; | |
e56e0b78 | 823 | struct nfs_fattr f_attr; |
e56e0b78 | 824 | struct dentry *dir; |
82a2c1b7 | 825 | struct dentry *dentry; |
e56e0b78 | 826 | struct nfs4_state_owner *owner; |
aac00a8d | 827 | struct nfs4_state *state; |
e56e0b78 | 828 | struct iattr attrs; |
26e976a8 | 829 | unsigned long timestamp; |
3e309914 | 830 | unsigned int rpc_done : 1; |
24ac23ab TM |
831 | int rpc_status; |
832 | int cancelled; | |
e56e0b78 TM |
833 | }; |
834 | ||
2ced46c2 TM |
835 | |
836 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
837 | { | |
838 | p->o_res.f_attr = &p->f_attr; | |
c1d51931 TM |
839 | p->o_res.seqid = p->o_arg.seqid; |
840 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 | 841 | p->o_res.server = p->o_arg.server; |
5f657530 | 842 | p->o_res.access_request = p->o_arg.access; |
2ced46c2 | 843 | nfs_fattr_init(&p->f_attr); |
6926afd1 | 844 | nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name); |
2ced46c2 TM |
845 | } |
846 | ||
82a2c1b7 | 847 | static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, |
dc0b027d | 848 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be TM |
849 | const struct iattr *attrs, |
850 | gfp_t gfp_mask) | |
e56e0b78 | 851 | { |
82a2c1b7 | 852 | struct dentry *parent = dget_parent(dentry); |
e56e0b78 TM |
853 | struct inode *dir = parent->d_inode; |
854 | struct nfs_server *server = NFS_SERVER(dir); | |
855 | struct nfs4_opendata *p; | |
856 | ||
8535b2be | 857 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
858 | if (p == NULL) |
859 | goto err; | |
8535b2be | 860 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
861 | if (p->o_arg.seqid == NULL) |
862 | goto err_free; | |
82a2c1b7 AV |
863 | nfs_sb_active(dentry->d_sb); |
864 | p->dentry = dget(dentry); | |
e56e0b78 TM |
865 | p->dir = parent; |
866 | p->owner = sp; | |
867 | atomic_inc(&sp->so_count); | |
868 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
869 | p->o_arg.open_flags = flags; |
870 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
ae2bb032 WAA |
871 | /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS |
872 | * will return permission denied for all bits until close */ | |
873 | if (!(flags & O_EXCL)) { | |
874 | /* ask server to check for all possible rights as results | |
875 | * are cached */ | |
876 | p->o_arg.access = NFS4_ACCESS_READ | NFS4_ACCESS_MODIFY | | |
877 | NFS4_ACCESS_EXTEND | NFS4_ACCESS_EXECUTE; | |
ae2bb032 | 878 | } |
7539bbab | 879 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
95b72eb0 TM |
880 | p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); |
881 | p->o_arg.id.uniquifier = sp->so_seqid.owner_id; | |
82a2c1b7 | 882 | p->o_arg.name = &dentry->d_name; |
e56e0b78 TM |
883 | p->o_arg.server = server; |
884 | p->o_arg.bitmask = server->attr_bitmask; | |
1549210f | 885 | p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0]; |
e56e0b78 | 886 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; |
536e43d1 | 887 | if (attrs != NULL && attrs->ia_valid != 0) { |
cd93710e | 888 | __be32 verf[2]; |
d77d76ff | 889 | |
e56e0b78 TM |
890 | p->o_arg.u.attrs = &p->attrs; |
891 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
cd93710e CL |
892 | |
893 | verf[0] = jiffies; | |
894 | verf[1] = current->pid; | |
895 | memcpy(p->o_arg.u.verifier.data, verf, | |
896 | sizeof(p->o_arg.u.verifier.data)); | |
e56e0b78 | 897 | } |
cdd4e68b TM |
898 | p->c_arg.fh = &p->o_res.fh; |
899 | p->c_arg.stateid = &p->o_res.stateid; | |
900 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 901 | nfs4_init_opendata_res(p); |
c6d00e63 | 902 | kref_init(&p->kref); |
e56e0b78 TM |
903 | return p; |
904 | err_free: | |
905 | kfree(p); | |
906 | err: | |
907 | dput(parent); | |
908 | return NULL; | |
909 | } | |
910 | ||
c6d00e63 | 911 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 912 | { |
c6d00e63 TM |
913 | struct nfs4_opendata *p = container_of(kref, |
914 | struct nfs4_opendata, kref); | |
82a2c1b7 | 915 | struct super_block *sb = p->dentry->d_sb; |
c6d00e63 TM |
916 | |
917 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
918 | if (p->state != NULL) |
919 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
920 | nfs4_put_state_owner(p->owner); |
921 | dput(p->dir); | |
82a2c1b7 AV |
922 | dput(p->dentry); |
923 | nfs_sb_deactive(sb); | |
6926afd1 | 924 | nfs_fattr_free_names(&p->f_attr); |
c6d00e63 TM |
925 | kfree(p); |
926 | } | |
927 | ||
928 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
929 | { | |
930 | if (p != NULL) | |
931 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
932 | } |
933 | ||
06f814a3 TM |
934 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
935 | { | |
06f814a3 TM |
936 | int ret; |
937 | ||
06f814a3 | 938 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
939 | return ret; |
940 | } | |
941 | ||
dc0b027d | 942 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
943 | { |
944 | int ret = 0; | |
dc0b027d | 945 | |
536e43d1 | 946 | if (open_mode & (O_EXCL|O_TRUNC)) |
dc0b027d TM |
947 | goto out; |
948 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 949 | case FMODE_READ: |
88069f77 TM |
950 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
951 | && state->n_rdonly != 0; | |
6ee41268 TM |
952 | break; |
953 | case FMODE_WRITE: | |
88069f77 TM |
954 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
955 | && state->n_wronly != 0; | |
6ee41268 TM |
956 | break; |
957 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
958 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
959 | && state->n_rdwr != 0; | |
6ee41268 | 960 | } |
dc0b027d | 961 | out: |
6ee41268 TM |
962 | return ret; |
963 | } | |
964 | ||
dc0b027d | 965 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 966 | { |
652f89f6 TM |
967 | if (delegation == NULL) |
968 | return 0; | |
dc0b027d | 969 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 970 | return 0; |
15c831bf | 971 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 972 | return 0; |
b7391f44 | 973 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
974 | return 1; |
975 | } | |
976 | ||
dc0b027d | 977 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 978 | { |
dc0b027d | 979 | switch (fmode) { |
e7616923 TM |
980 | case FMODE_WRITE: |
981 | state->n_wronly++; | |
982 | break; | |
983 | case FMODE_READ: | |
984 | state->n_rdonly++; | |
985 | break; | |
986 | case FMODE_READ|FMODE_WRITE: | |
987 | state->n_rdwr++; | |
988 | } | |
dc0b027d | 989 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
990 | } |
991 | ||
dc0b027d | 992 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
993 | { |
994 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
f597c537 TM |
995 | nfs4_stateid_copy(&state->stateid, stateid); |
996 | nfs4_stateid_copy(&state->open_stateid, stateid); | |
dc0b027d | 997 | switch (fmode) { |
003707c7 TM |
998 | case FMODE_READ: |
999 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1000 | break; | |
1001 | case FMODE_WRITE: | |
1002 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1003 | break; | |
1004 | case FMODE_READ|FMODE_WRITE: | |
1005 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
1006 | } | |
e7616923 TM |
1007 | } |
1008 | ||
dc0b027d | 1009 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 1010 | { |
8bda4e4c | 1011 | write_seqlock(&state->seqlock); |
dc0b027d | 1012 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 1013 | write_sequnlock(&state->seqlock); |
003707c7 TM |
1014 | } |
1015 | ||
dc0b027d | 1016 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 1017 | { |
8bda4e4c TM |
1018 | /* |
1019 | * Protect the call to nfs4_state_set_mode_locked and | |
1020 | * serialise the stateid update | |
1021 | */ | |
1022 | write_seqlock(&state->seqlock); | |
003707c7 | 1023 | if (deleg_stateid != NULL) { |
f597c537 | 1024 | nfs4_stateid_copy(&state->stateid, deleg_stateid); |
003707c7 TM |
1025 | set_bit(NFS_DELEGATED_STATE, &state->flags); |
1026 | } | |
1027 | if (open_stateid != NULL) | |
dc0b027d | 1028 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
1029 | write_sequnlock(&state->seqlock); |
1030 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 1031 | update_open_stateflags(state, fmode); |
ec073428 | 1032 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
1033 | } |
1034 | ||
dc0b027d | 1035 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
1036 | { |
1037 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1038 | struct nfs_delegation *deleg_cur; | |
1039 | int ret = 0; | |
1040 | ||
dc0b027d | 1041 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
1042 | |
1043 | rcu_read_lock(); | |
1044 | deleg_cur = rcu_dereference(nfsi->delegation); | |
1045 | if (deleg_cur == NULL) | |
1046 | goto no_delegation; | |
1047 | ||
1048 | spin_lock(&deleg_cur->lock); | |
1049 | if (nfsi->delegation != deleg_cur || | |
dc0b027d | 1050 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
1051 | goto no_delegation_unlock; |
1052 | ||
1053 | if (delegation == NULL) | |
1054 | delegation = &deleg_cur->stateid; | |
f597c537 | 1055 | else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation)) |
34310430 TM |
1056 | goto no_delegation_unlock; |
1057 | ||
b7391f44 | 1058 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 1059 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
1060 | ret = 1; |
1061 | no_delegation_unlock: | |
1062 | spin_unlock(&deleg_cur->lock); | |
1063 | no_delegation: | |
1064 | rcu_read_unlock(); | |
1065 | ||
1066 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 1067 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
1068 | ret = 1; |
1069 | } | |
1070 | ||
1071 | return ret; | |
1072 | } | |
1073 | ||
1074 | ||
dc0b027d | 1075 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1076 | { |
1077 | struct nfs_delegation *delegation; | |
1078 | ||
1079 | rcu_read_lock(); | |
1080 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1081 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1082 | rcu_read_unlock(); |
1083 | return; | |
1084 | } | |
1085 | rcu_read_unlock(); | |
57ec14c5 | 1086 | nfs4_inode_return_delegation(inode); |
aac00a8d TM |
1087 | } |
1088 | ||
6ee41268 | 1089 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1090 | { |
1091 | struct nfs4_state *state = opendata->state; | |
1092 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1093 | struct nfs_delegation *delegation; | |
536e43d1 | 1094 | int open_mode = opendata->o_arg.open_flags & (O_EXCL|O_TRUNC); |
dc0b027d | 1095 | fmode_t fmode = opendata->o_arg.fmode; |
aac00a8d TM |
1096 | nfs4_stateid stateid; |
1097 | int ret = -EAGAIN; | |
1098 | ||
aac00a8d | 1099 | for (;;) { |
dc0b027d | 1100 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1101 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1102 | if (can_open_cached(state, fmode, open_mode)) { |
1103 | update_open_stateflags(state, fmode); | |
6ee41268 | 1104 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1105 | goto out_return_state; |
1106 | } | |
1107 | spin_unlock(&state->owner->so_lock); | |
1108 | } | |
34310430 TM |
1109 | rcu_read_lock(); |
1110 | delegation = rcu_dereference(nfsi->delegation); | |
652f89f6 | 1111 | if (!can_open_delegated(delegation, fmode)) { |
34310430 | 1112 | rcu_read_unlock(); |
aac00a8d | 1113 | break; |
34310430 | 1114 | } |
aac00a8d | 1115 | /* Save the delegation */ |
f597c537 | 1116 | nfs4_stateid_copy(&stateid, &delegation->stateid); |
aac00a8d | 1117 | rcu_read_unlock(); |
af22f94a | 1118 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
1119 | if (ret != 0) |
1120 | goto out; | |
1121 | ret = -EAGAIN; | |
34310430 TM |
1122 | |
1123 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1124 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1125 | goto out_return_state; |
aac00a8d | 1126 | } |
aac00a8d TM |
1127 | out: |
1128 | return ERR_PTR(ret); | |
1129 | out_return_state: | |
1130 | atomic_inc(&state->count); | |
1131 | return state; | |
1132 | } | |
1133 | ||
e23008ec AA |
1134 | static void |
1135 | nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state) | |
1136 | { | |
1137 | struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client; | |
1138 | struct nfs_delegation *delegation; | |
1139 | int delegation_flags = 0; | |
1140 | ||
1141 | rcu_read_lock(); | |
1142 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
1143 | if (delegation) | |
1144 | delegation_flags = delegation->flags; | |
1145 | rcu_read_unlock(); | |
1146 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) { | |
1147 | pr_err_ratelimited("NFS: Broken NFSv4 server %s is " | |
1148 | "returning a delegation for " | |
1149 | "OPEN(CLAIM_DELEGATE_CUR)\n", | |
1150 | clp->cl_hostname); | |
1151 | } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) | |
1152 | nfs_inode_set_delegation(state->inode, | |
1153 | data->owner->so_cred, | |
1154 | &data->o_res); | |
1155 | else | |
1156 | nfs_inode_reclaim_delegation(state->inode, | |
1157 | data->owner->so_cred, | |
1158 | &data->o_res); | |
1159 | } | |
1160 | ||
1161 | /* | |
1162 | * Check the inode attributes against the CLAIM_PREVIOUS returned attributes | |
1163 | * and update the nfs4_state. | |
1164 | */ | |
1165 | static struct nfs4_state * | |
1166 | _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data) | |
1167 | { | |
1168 | struct inode *inode = data->state->inode; | |
1169 | struct nfs4_state *state = data->state; | |
1170 | int ret; | |
1171 | ||
1172 | if (!data->rpc_done) { | |
1173 | ret = data->rpc_status; | |
1174 | goto err; | |
1175 | } | |
1176 | ||
1177 | ret = -ESTALE; | |
1178 | if (!(data->f_attr.valid & NFS_ATTR_FATTR_TYPE) || | |
1179 | !(data->f_attr.valid & NFS_ATTR_FATTR_FILEID) || | |
1180 | !(data->f_attr.valid & NFS_ATTR_FATTR_CHANGE)) | |
1181 | goto err; | |
1182 | ||
1183 | ret = -ENOMEM; | |
1184 | state = nfs4_get_open_state(inode, data->owner); | |
1185 | if (state == NULL) | |
1186 | goto err; | |
1187 | ||
1188 | ret = nfs_refresh_inode(inode, &data->f_attr); | |
1189 | if (ret) | |
1190 | goto err; | |
1191 | ||
1192 | if (data->o_res.delegation_type != 0) | |
1193 | nfs4_opendata_check_deleg(data, state); | |
1194 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
1195 | data->o_arg.fmode); | |
1196 | ||
1197 | return state; | |
1198 | err: | |
1199 | return ERR_PTR(ret); | |
1200 | ||
1201 | } | |
1202 | ||
1203 | static struct nfs4_state * | |
1204 | _nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
24ac23ab TM |
1205 | { |
1206 | struct inode *inode; | |
1207 | struct nfs4_state *state = NULL; | |
1b370bc2 | 1208 | int ret; |
24ac23ab | 1209 | |
aac00a8d | 1210 | if (!data->rpc_done) { |
6ee41268 | 1211 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1212 | goto out; |
1213 | } | |
1214 | ||
1b370bc2 | 1215 | ret = -EAGAIN; |
24ac23ab | 1216 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1217 | goto err; |
24ac23ab | 1218 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 1219 | ret = PTR_ERR(inode); |
03f28e3a | 1220 | if (IS_ERR(inode)) |
1b370bc2 TM |
1221 | goto err; |
1222 | ret = -ENOMEM; | |
24ac23ab TM |
1223 | state = nfs4_get_open_state(inode, data->owner); |
1224 | if (state == NULL) | |
1b370bc2 | 1225 | goto err_put_inode; |
e23008ec AA |
1226 | if (data->o_res.delegation_type != 0) |
1227 | nfs4_opendata_check_deleg(data, state); | |
34310430 | 1228 | update_open_stateid(state, &data->o_res.stateid, NULL, |
dc0b027d | 1229 | data->o_arg.fmode); |
24ac23ab | 1230 | iput(inode); |
aac00a8d | 1231 | out: |
24ac23ab | 1232 | return state; |
1b370bc2 TM |
1233 | err_put_inode: |
1234 | iput(inode); | |
1235 | err: | |
1236 | return ERR_PTR(ret); | |
24ac23ab TM |
1237 | } |
1238 | ||
e23008ec AA |
1239 | static struct nfs4_state * |
1240 | nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) | |
1241 | { | |
1242 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) | |
1243 | return _nfs4_opendata_reclaim_to_nfs4_state(data); | |
1244 | return _nfs4_opendata_to_nfs4_state(data); | |
1245 | } | |
1246 | ||
864472e9 TM |
1247 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1248 | { | |
1249 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1250 | struct nfs_open_context *ctx; | |
1251 | ||
1252 | spin_lock(&state->inode->i_lock); | |
1253 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1254 | if (ctx->state != state) | |
1255 | continue; | |
1256 | get_nfs_open_context(ctx); | |
1257 | spin_unlock(&state->inode->i_lock); | |
1258 | return ctx; | |
1259 | } | |
1260 | spin_unlock(&state->inode->i_lock); | |
1261 | return ERR_PTR(-ENOENT); | |
1262 | } | |
1263 | ||
6f220ed5 TM |
1264 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
1265 | { | |
1266 | struct nfs4_opendata *opendata; | |
1267 | ||
3d4ff43d | 1268 | opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0, NULL, GFP_NOFS); |
6f220ed5 TM |
1269 | if (opendata == NULL) |
1270 | return ERR_PTR(-ENOMEM); | |
1271 | opendata->state = state; | |
1272 | atomic_inc(&state->count); | |
1273 | return opendata; | |
1274 | } | |
1275 | ||
dc0b027d | 1276 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1277 | { |
2ced46c2 | 1278 | struct nfs4_state *newstate; |
864472e9 TM |
1279 | int ret; |
1280 | ||
dc0b027d TM |
1281 | opendata->o_arg.open_flags = 0; |
1282 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1283 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1284 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1285 | nfs4_init_opendata_res(opendata); | |
b257957e | 1286 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1287 | if (ret != 0) |
1288 | return ret; | |
2ced46c2 | 1289 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1290 | if (IS_ERR(newstate)) |
1291 | return PTR_ERR(newstate); | |
643168c2 | 1292 | nfs4_close_state(newstate, fmode); |
2ced46c2 | 1293 | *res = newstate; |
864472e9 TM |
1294 | return 0; |
1295 | } | |
1296 | ||
1297 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1298 | { | |
864472e9 | 1299 | struct nfs4_state *newstate; |
864472e9 TM |
1300 | int ret; |
1301 | ||
1302 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1303 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1304 | smp_rmb(); |
1305 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1306 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1307 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1308 | if (ret != 0) |
1309 | return ret; | |
2ced46c2 TM |
1310 | if (newstate != state) |
1311 | return -ESTALE; | |
864472e9 TM |
1312 | } |
1313 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1314 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1315 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1316 | if (ret != 0) |
1317 | return ret; | |
2ced46c2 TM |
1318 | if (newstate != state) |
1319 | return -ESTALE; | |
864472e9 TM |
1320 | } |
1321 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1322 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1323 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1324 | if (ret != 0) |
1325 | return ret; | |
2ced46c2 TM |
1326 | if (newstate != state) |
1327 | return -ESTALE; | |
864472e9 | 1328 | } |
1ac7e2fd TM |
1329 | /* |
1330 | * We may have performed cached opens for all three recoveries. | |
1331 | * Check if we need to update the current stateid. | |
1332 | */ | |
1333 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
f597c537 | 1334 | !nfs4_stateid_match(&state->stateid, &state->open_stateid)) { |
8bda4e4c | 1335 | write_seqlock(&state->seqlock); |
1ac7e2fd | 1336 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
f597c537 | 1337 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); |
8bda4e4c | 1338 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1339 | } |
864472e9 TM |
1340 | return 0; |
1341 | } | |
1342 | ||
1da177e4 LT |
1343 | /* |
1344 | * OPEN_RECLAIM: | |
1345 | * reclaim state on the server after a reboot. | |
1da177e4 | 1346 | */ |
539cd03a | 1347 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1348 | { |
1ac7e2fd | 1349 | struct nfs_delegation *delegation; |
864472e9 | 1350 | struct nfs4_opendata *opendata; |
dc0b027d | 1351 | fmode_t delegation_type = 0; |
1da177e4 LT |
1352 | int status; |
1353 | ||
6f220ed5 TM |
1354 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1355 | if (IS_ERR(opendata)) | |
1356 | return PTR_ERR(opendata); | |
864472e9 TM |
1357 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1358 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1359 | rcu_read_lock(); |
1360 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1361 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1362 | delegation_type = delegation->type; |
1ac7e2fd | 1363 | rcu_read_unlock(); |
864472e9 TM |
1364 | opendata->o_arg.u.delegation_type = delegation_type; |
1365 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1366 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1367 | return status; |
1368 | } | |
1369 | ||
539cd03a | 1370 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1371 | { |
1372 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1373 | struct nfs4_exception exception = { }; | |
1374 | int err; | |
1375 | do { | |
539cd03a | 1376 | err = _nfs4_do_open_reclaim(ctx, state); |
168667c4 | 1377 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1378 | break; |
1379 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1380 | } while (exception.retry); |
1381 | return err; | |
1382 | } | |
1383 | ||
864472e9 TM |
1384 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1385 | { | |
1386 | struct nfs_open_context *ctx; | |
1387 | int ret; | |
1388 | ||
1389 | ctx = nfs4_state_find_open_context(state); | |
1390 | if (IS_ERR(ctx)) | |
1391 | return PTR_ERR(ctx); | |
539cd03a | 1392 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1393 | put_nfs_open_context(ctx); |
1394 | return ret; | |
1395 | } | |
1396 | ||
13437e12 | 1397 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1398 | { |
e56e0b78 | 1399 | struct nfs4_opendata *opendata; |
864472e9 | 1400 | int ret; |
1da177e4 | 1401 | |
6f220ed5 TM |
1402 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1403 | if (IS_ERR(opendata)) | |
1404 | return PTR_ERR(opendata); | |
e56e0b78 | 1405 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
f597c537 | 1406 | nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid); |
864472e9 | 1407 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1408 | nfs4_opendata_put(opendata); |
864472e9 | 1409 | return ret; |
1da177e4 LT |
1410 | } |
1411 | ||
13437e12 | 1412 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1413 | { |
1414 | struct nfs4_exception exception = { }; | |
539cd03a | 1415 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1416 | int err; |
1417 | do { | |
13437e12 | 1418 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1419 | switch (err) { |
1420 | case 0: | |
965b5d67 TM |
1421 | case -ENOENT: |
1422 | case -ESTALE: | |
1423 | goto out; | |
bcfa49f6 RL |
1424 | case -NFS4ERR_BADSESSION: |
1425 | case -NFS4ERR_BADSLOT: | |
1426 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1427 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1428 | case -NFS4ERR_DEADSESSION: | |
9f594791 | 1429 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); |
bcfa49f6 | 1430 | goto out; |
1da177e4 LT |
1431 | case -NFS4ERR_STALE_CLIENTID: |
1432 | case -NFS4ERR_STALE_STATEID: | |
1433 | case -NFS4ERR_EXPIRED: | |
1434 | /* Don't recall a delegation if it was lost */ | |
0400a6b0 | 1435 | nfs4_schedule_lease_recovery(server->nfs_client); |
965b5d67 TM |
1436 | goto out; |
1437 | case -ERESTARTSYS: | |
1438 | /* | |
1439 | * The show must go on: exit, but mark the | |
1440 | * stateid as needing recovery. | |
1441 | */ | |
a1d0b5ee | 1442 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
1443 | case -NFS4ERR_ADMIN_REVOKED: |
1444 | case -NFS4ERR_BAD_STATEID: | |
a1d0b5ee TM |
1445 | nfs_inode_find_state_and_recover(state->inode, |
1446 | stateid); | |
0400a6b0 | 1447 | nfs4_schedule_stateid_recovery(server, state); |
168667c4 TM |
1448 | case -EKEYEXPIRED: |
1449 | /* | |
1450 | * User RPCSEC_GSS context has expired. | |
1451 | * We cannot recover this stateid now, so | |
1452 | * skip it and allow recovery thread to | |
1453 | * proceed. | |
1454 | */ | |
965b5d67 TM |
1455 | case -ENOMEM: |
1456 | err = 0; | |
1457 | goto out; | |
1da177e4 LT |
1458 | } |
1459 | err = nfs4_handle_exception(server, err, &exception); | |
1460 | } while (exception.retry); | |
965b5d67 | 1461 | out: |
1da177e4 LT |
1462 | return err; |
1463 | } | |
1464 | ||
cdd4e68b TM |
1465 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1466 | { | |
1467 | struct nfs4_opendata *data = calldata; | |
1468 | ||
1469 | data->rpc_status = task->tk_status; | |
26e976a8 | 1470 | if (data->rpc_status == 0) { |
f597c537 | 1471 | nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid); |
bb22629e | 1472 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1473 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1474 | data->rpc_done = 1; |
26e976a8 | 1475 | } |
cdd4e68b TM |
1476 | } |
1477 | ||
1478 | static void nfs4_open_confirm_release(void *calldata) | |
1479 | { | |
1480 | struct nfs4_opendata *data = calldata; | |
1481 | struct nfs4_state *state = NULL; | |
1482 | ||
1483 | /* If this request hasn't been cancelled, do nothing */ | |
1484 | if (data->cancelled == 0) | |
1485 | goto out_free; | |
1486 | /* In case of error, no cleanup! */ | |
3e309914 | 1487 | if (!data->rpc_done) |
cdd4e68b | 1488 | goto out_free; |
cdd4e68b | 1489 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1490 | if (!IS_ERR(state)) |
643168c2 | 1491 | nfs4_close_state(state, data->o_arg.fmode); |
cdd4e68b | 1492 | out_free: |
c6d00e63 | 1493 | nfs4_opendata_put(data); |
cdd4e68b TM |
1494 | } |
1495 | ||
1496 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1497 | .rpc_call_done = nfs4_open_confirm_done, |
1498 | .rpc_release = nfs4_open_confirm_release, | |
1499 | }; | |
1500 | ||
1501 | /* | |
1502 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1503 | */ | |
1504 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1505 | { | |
1506 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1507 | struct rpc_task *task; | |
5138fde0 TM |
1508 | struct rpc_message msg = { |
1509 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1510 | .rpc_argp = &data->c_arg, | |
1511 | .rpc_resp = &data->c_res, | |
1512 | .rpc_cred = data->owner->so_cred, | |
1513 | }; | |
c970aa85 TM |
1514 | struct rpc_task_setup task_setup_data = { |
1515 | .rpc_client = server->client, | |
5138fde0 | 1516 | .rpc_message = &msg, |
c970aa85 TM |
1517 | .callback_ops = &nfs4_open_confirm_ops, |
1518 | .callback_data = data, | |
101070ca | 1519 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1520 | .flags = RPC_TASK_ASYNC, |
1521 | }; | |
1da177e4 LT |
1522 | int status; |
1523 | ||
c6d00e63 | 1524 | kref_get(&data->kref); |
3e309914 TM |
1525 | data->rpc_done = 0; |
1526 | data->rpc_status = 0; | |
5138fde0 | 1527 | data->timestamp = jiffies; |
c970aa85 | 1528 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1529 | if (IS_ERR(task)) |
cdd4e68b | 1530 | return PTR_ERR(task); |
cdd4e68b TM |
1531 | status = nfs4_wait_for_completion_rpc_task(task); |
1532 | if (status != 0) { | |
1533 | data->cancelled = 1; | |
1534 | smp_wmb(); | |
1535 | } else | |
1536 | status = data->rpc_status; | |
e6b3c4db | 1537 | rpc_put_task(task); |
1da177e4 LT |
1538 | return status; |
1539 | } | |
1540 | ||
24ac23ab | 1541 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1542 | { |
24ac23ab TM |
1543 | struct nfs4_opendata *data = calldata; |
1544 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1545 | |
24ac23ab TM |
1546 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
1547 | return; | |
aac00a8d TM |
1548 | /* |
1549 | * Check if we still need to send an OPEN call, or if we can use | |
1550 | * a delegation instead. | |
1551 | */ | |
1552 | if (data->state != NULL) { | |
1553 | struct nfs_delegation *delegation; | |
1554 | ||
dc0b027d | 1555 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1556 | goto out_no_action; |
aac00a8d TM |
1557 | rcu_read_lock(); |
1558 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
652f89f6 TM |
1559 | if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR && |
1560 | can_open_delegated(delegation, data->o_arg.fmode)) | |
1561 | goto unlock_no_action; | |
aac00a8d TM |
1562 | rcu_read_unlock(); |
1563 | } | |
95b72eb0 | 1564 | /* Update client id. */ |
1f0e890d | 1565 | data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; |
6f220ed5 | 1566 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1567 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
e23008ec | 1568 | data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0]; |
6f220ed5 TM |
1569 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1570 | } | |
26e976a8 | 1571 | data->timestamp = jiffies; |
035168ab | 1572 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c | 1573 | &data->o_arg.seq_args, |
2240a9e2 TM |
1574 | &data->o_res.seq_res, |
1575 | task) != 0) | |
1576 | nfs_release_seqid(data->o_arg.seqid); | |
1577 | else | |
1578 | rpc_call_start(task); | |
6ee41268 | 1579 | return; |
652f89f6 TM |
1580 | unlock_no_action: |
1581 | rcu_read_unlock(); | |
6ee41268 TM |
1582 | out_no_action: |
1583 | task->tk_action = NULL; | |
1584 | ||
24ac23ab | 1585 | } |
1da177e4 | 1586 | |
b257957e AB |
1587 | static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata) |
1588 | { | |
1589 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
1590 | nfs4_open_prepare(task, calldata); | |
1591 | } | |
1592 | ||
24ac23ab TM |
1593 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1594 | { | |
1595 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1596 | |
24ac23ab | 1597 | data->rpc_status = task->tk_status; |
d898528c | 1598 | |
14516c3a TM |
1599 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1600 | return; | |
d898528c | 1601 | |
24ac23ab | 1602 | if (task->tk_status == 0) { |
807d66d8 TM |
1603 | if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) { |
1604 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1605 | case S_IFREG: |
1606 | break; | |
1607 | case S_IFLNK: | |
24ac23ab | 1608 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1609 | break; |
1610 | case S_IFDIR: | |
24ac23ab | 1611 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1612 | break; |
1613 | default: | |
24ac23ab | 1614 | data->rpc_status = -ENOTDIR; |
807d66d8 | 1615 | } |
6f926b5b | 1616 | } |
26e976a8 | 1617 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1618 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1619 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1620 | } |
3e309914 | 1621 | data->rpc_done = 1; |
24ac23ab | 1622 | } |
6f926b5b | 1623 | |
24ac23ab TM |
1624 | static void nfs4_open_release(void *calldata) |
1625 | { | |
1626 | struct nfs4_opendata *data = calldata; | |
1627 | struct nfs4_state *state = NULL; | |
1628 | ||
1629 | /* If this request hasn't been cancelled, do nothing */ | |
1630 | if (data->cancelled == 0) | |
1631 | goto out_free; | |
1632 | /* In case of error, no cleanup! */ | |
3e309914 | 1633 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1634 | goto out_free; |
1635 | /* In case we need an open_confirm, no cleanup! */ | |
1636 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1637 | goto out_free; | |
24ac23ab | 1638 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1639 | if (!IS_ERR(state)) |
643168c2 | 1640 | nfs4_close_state(state, data->o_arg.fmode); |
24ac23ab | 1641 | out_free: |
c6d00e63 | 1642 | nfs4_opendata_put(data); |
24ac23ab TM |
1643 | } |
1644 | ||
1645 | static const struct rpc_call_ops nfs4_open_ops = { | |
1646 | .rpc_call_prepare = nfs4_open_prepare, | |
1647 | .rpc_call_done = nfs4_open_done, | |
1648 | .rpc_release = nfs4_open_release, | |
1649 | }; | |
1650 | ||
b257957e AB |
1651 | static const struct rpc_call_ops nfs4_recover_open_ops = { |
1652 | .rpc_call_prepare = nfs4_recover_open_prepare, | |
1653 | .rpc_call_done = nfs4_open_done, | |
1654 | .rpc_release = nfs4_open_release, | |
1655 | }; | |
1656 | ||
1657 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) | |
24ac23ab TM |
1658 | { |
1659 | struct inode *dir = data->dir->d_inode; | |
1660 | struct nfs_server *server = NFS_SERVER(dir); | |
1661 | struct nfs_openargs *o_arg = &data->o_arg; | |
1662 | struct nfs_openres *o_res = &data->o_res; | |
1663 | struct rpc_task *task; | |
5138fde0 TM |
1664 | struct rpc_message msg = { |
1665 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1666 | .rpc_argp = o_arg, | |
1667 | .rpc_resp = o_res, | |
1668 | .rpc_cred = data->owner->so_cred, | |
1669 | }; | |
c970aa85 TM |
1670 | struct rpc_task_setup task_setup_data = { |
1671 | .rpc_client = server->client, | |
5138fde0 | 1672 | .rpc_message = &msg, |
c970aa85 TM |
1673 | .callback_ops = &nfs4_open_ops, |
1674 | .callback_data = data, | |
101070ca | 1675 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1676 | .flags = RPC_TASK_ASYNC, |
1677 | }; | |
24ac23ab TM |
1678 | int status; |
1679 | ||
9d12b216 | 1680 | nfs41_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1); |
c6d00e63 | 1681 | kref_get(&data->kref); |
3e309914 TM |
1682 | data->rpc_done = 0; |
1683 | data->rpc_status = 0; | |
2ced46c2 | 1684 | data->cancelled = 0; |
b257957e AB |
1685 | if (isrecover) |
1686 | task_setup_data.callback_ops = &nfs4_recover_open_ops; | |
c970aa85 | 1687 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1688 | if (IS_ERR(task)) |
1689 | return PTR_ERR(task); | |
1690 | status = nfs4_wait_for_completion_rpc_task(task); | |
1691 | if (status != 0) { | |
1692 | data->cancelled = 1; | |
1693 | smp_wmb(); | |
1694 | } else | |
1695 | status = data->rpc_status; | |
1696 | rpc_put_task(task); | |
1697 | ||
1698 | return status; | |
1699 | } | |
1700 | ||
1701 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1702 | { | |
1703 | struct inode *dir = data->dir->d_inode; | |
1704 | struct nfs_openres *o_res = &data->o_res; | |
1705 | int status; | |
1706 | ||
1707 | status = nfs4_run_open_task(data, 1); | |
1708 | if (status != 0 || !data->rpc_done) | |
1709 | return status; | |
1710 | ||
6926afd1 TM |
1711 | nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); |
1712 | ||
b257957e AB |
1713 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
1714 | status = _nfs4_proc_open_confirm(data); | |
1715 | if (status != 0) | |
1716 | return status; | |
1717 | } | |
1718 | ||
1719 | return status; | |
1720 | } | |
1721 | ||
6168f62c WAA |
1722 | static int nfs4_opendata_access(struct rpc_cred *cred, |
1723 | struct nfs4_opendata *opendata, | |
1724 | struct nfs4_state *state, fmode_t fmode) | |
1725 | { | |
1726 | struct nfs_access_entry cache; | |
1727 | u32 mask; | |
1728 | ||
1729 | /* access call failed or for some reason the server doesn't | |
1730 | * support any access modes -- defer access call until later */ | |
1731 | if (opendata->o_res.access_supported == 0) | |
1732 | return 0; | |
1733 | ||
1734 | mask = 0; | |
bbd3a8ee WAA |
1735 | /* don't check MAY_WRITE - a newly created file may not have |
1736 | * write mode bits, but POSIX allows the creating process to write */ | |
6168f62c WAA |
1737 | if (fmode & FMODE_READ) |
1738 | mask |= MAY_READ; | |
6168f62c WAA |
1739 | if (fmode & FMODE_EXEC) |
1740 | mask |= MAY_EXEC; | |
1741 | ||
1742 | cache.cred = cred; | |
1743 | cache.jiffies = jiffies; | |
1744 | nfs_access_set_mask(&cache, opendata->o_res.access_result); | |
1745 | nfs_access_add_cache(state->inode, &cache); | |
1746 | ||
bbd3a8ee | 1747 | if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0) |
6168f62c WAA |
1748 | return 0; |
1749 | ||
1750 | /* even though OPEN succeeded, access is denied. Close the file */ | |
1751 | nfs4_close_state(state, fmode); | |
1752 | return -NFS4ERR_ACCESS; | |
1753 | } | |
1754 | ||
b257957e AB |
1755 | /* |
1756 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1757 | */ | |
1758 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1759 | { | |
1760 | struct inode *dir = data->dir->d_inode; | |
1761 | struct nfs_server *server = NFS_SERVER(dir); | |
1762 | struct nfs_openargs *o_arg = &data->o_arg; | |
1763 | struct nfs_openres *o_res = &data->o_res; | |
1764 | int status; | |
1765 | ||
1766 | status = nfs4_run_open_task(data, 0); | |
08ef7bd3 TM |
1767 | if (!data->rpc_done) |
1768 | return status; | |
1769 | if (status != 0) { | |
1770 | if (status == -NFS4ERR_BADNAME && | |
1771 | !(o_arg->open_flags & O_CREAT)) | |
1772 | return -ENOENT; | |
24ac23ab | 1773 | return status; |
08ef7bd3 | 1774 | } |
24ac23ab | 1775 | |
6926afd1 TM |
1776 | nfs_fattr_map_and_free_names(server, &data->f_attr); |
1777 | ||
90ff0c54 | 1778 | if (o_arg->open_flags & O_CREAT) |
56ae19f3 | 1779 | update_changeattr(dir, &o_res->cinfo); |
0df5dd4a TM |
1780 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1781 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1782 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1783 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1784 | if (status != 0) |
24ac23ab | 1785 | return status; |
1da177e4 LT |
1786 | } |
1787 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1788 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1789 | return 0; |
1da177e4 LT |
1790 | } |
1791 | ||
d83217c1 | 1792 | static int nfs4_client_recover_expired_lease(struct nfs_client *clp) |
58d9714a | 1793 | { |
a78cb57a | 1794 | unsigned int loop; |
6b30954e | 1795 | int ret; |
58d9714a | 1796 | |
a78cb57a | 1797 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { |
65de872e | 1798 | ret = nfs4_wait_clnt_recover(clp); |
6b30954e | 1799 | if (ret != 0) |
a78cb57a | 1800 | break; |
e598d843 TM |
1801 | if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) && |
1802 | !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state)) | |
6b30954e | 1803 | break; |
0400a6b0 | 1804 | nfs4_schedule_state_manager(clp); |
a78cb57a | 1805 | ret = -EIO; |
6b30954e | 1806 | } |
a78cb57a | 1807 | return ret; |
58d9714a TM |
1808 | } |
1809 | ||
d83217c1 AA |
1810 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1811 | { | |
1812 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1813 | } | |
1814 | ||
1da177e4 LT |
1815 | /* |
1816 | * OPEN_EXPIRED: | |
1817 | * reclaim state on the server after a network partition. | |
1818 | * Assumes caller holds the appropriate lock | |
1819 | */ | |
539cd03a | 1820 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1821 | { |
e56e0b78 | 1822 | struct nfs4_opendata *opendata; |
864472e9 | 1823 | int ret; |
1da177e4 | 1824 | |
6f220ed5 TM |
1825 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1826 | if (IS_ERR(opendata)) | |
1827 | return PTR_ERR(opendata); | |
864472e9 | 1828 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1829 | if (ret == -ESTALE) |
3d4ff43d | 1830 | d_drop(ctx->dentry); |
c6d00e63 | 1831 | nfs4_opendata_put(opendata); |
864472e9 | 1832 | return ret; |
1da177e4 LT |
1833 | } |
1834 | ||
a9ed2e25 | 1835 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1836 | { |
539cd03a | 1837 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1838 | struct nfs4_exception exception = { }; |
1839 | int err; | |
1840 | ||
1841 | do { | |
539cd03a | 1842 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1843 | switch (err) { |
1844 | default: | |
1845 | goto out; | |
1846 | case -NFS4ERR_GRACE: | |
1847 | case -NFS4ERR_DELAY: | |
1848 | nfs4_handle_exception(server, err, &exception); | |
1849 | err = 0; | |
1850 | } | |
202b50dc | 1851 | } while (exception.retry); |
a9ed2e25 | 1852 | out: |
202b50dc TM |
1853 | return err; |
1854 | } | |
1855 | ||
1da177e4 LT |
1856 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1857 | { | |
1da177e4 | 1858 | struct nfs_open_context *ctx; |
864472e9 | 1859 | int ret; |
1da177e4 | 1860 | |
864472e9 TM |
1861 | ctx = nfs4_state_find_open_context(state); |
1862 | if (IS_ERR(ctx)) | |
1863 | return PTR_ERR(ctx); | |
539cd03a | 1864 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1865 | put_nfs_open_context(ctx); |
1866 | return ret; | |
1da177e4 LT |
1867 | } |
1868 | ||
f062eb6c | 1869 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd | 1870 | static void nfs41_clear_delegation_stateid(struct nfs4_state *state) |
f062eb6c | 1871 | { |
f062eb6c | 1872 | struct nfs_server *server = NFS_SERVER(state->inode); |
3e60ffdd CL |
1873 | nfs4_stateid *stateid = &state->stateid; |
1874 | int status; | |
1875 | ||
1876 | /* If a state reset has been done, test_stateid is unneeded */ | |
1877 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
1878 | return; | |
1879 | ||
1880 | status = nfs41_test_stateid(server, stateid); | |
1881 | if (status != NFS_OK) { | |
1882 | /* Free the stateid unless the server explicitly | |
1883 | * informs us the stateid is unrecognized. */ | |
1884 | if (status != -NFS4ERR_BAD_STATEID) | |
1885 | nfs41_free_stateid(server, stateid); | |
6938867e | 1886 | nfs_remove_bad_delegation(state->inode); |
3e60ffdd | 1887 | |
6938867e BS |
1888 | write_seqlock(&state->seqlock); |
1889 | nfs4_stateid_copy(&state->stateid, &state->open_stateid); | |
1890 | write_sequnlock(&state->seqlock); | |
3e60ffdd CL |
1891 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
1892 | } | |
1893 | } | |
1894 | ||
1895 | /** | |
1896 | * nfs41_check_open_stateid - possibly free an open stateid | |
1897 | * | |
1898 | * @state: NFSv4 state for an inode | |
1899 | * | |
1900 | * Returns NFS_OK if recovery for this stateid is now finished. | |
1901 | * Otherwise a negative NFS4ERR value is returned. | |
1902 | */ | |
1903 | static int nfs41_check_open_stateid(struct nfs4_state *state) | |
1904 | { | |
1905 | struct nfs_server *server = NFS_SERVER(state->inode); | |
fcb6d9c6 | 1906 | nfs4_stateid *stateid = &state->open_stateid; |
3e60ffdd CL |
1907 | int status; |
1908 | ||
1909 | /* If a state reset has been done, test_stateid is unneeded */ | |
1910 | if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && | |
1911 | (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && | |
1912 | (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) | |
1913 | return -NFS4ERR_BAD_STATEID; | |
1914 | ||
1915 | status = nfs41_test_stateid(server, stateid); | |
1916 | if (status != NFS_OK) { | |
1917 | /* Free the stateid unless the server explicitly | |
1918 | * informs us the stateid is unrecognized. */ | |
1919 | if (status != -NFS4ERR_BAD_STATEID) | |
1920 | nfs41_free_stateid(server, stateid); | |
1921 | ||
1922 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1923 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1924 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
b01dd1d8 BS |
1925 | } |
1926 | return status; | |
1927 | } | |
1928 | ||
1929 | static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) | |
1930 | { | |
eb64cf96 | 1931 | int status; |
b01dd1d8 | 1932 | |
3e60ffdd CL |
1933 | nfs41_clear_delegation_stateid(state); |
1934 | status = nfs41_check_open_stateid(state); | |
eb64cf96 CL |
1935 | if (status != NFS_OK) |
1936 | status = nfs4_open_expired(sp, state); | |
1937 | return status; | |
f062eb6c BS |
1938 | } |
1939 | #endif | |
1940 | ||
aa53ed54 JL |
1941 | /* |
1942 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1943 | * fields corresponding to attributes that were used to store the verifier. | |
1944 | * Make sure we clobber those fields in the later setattr call | |
1945 | */ | |
1946 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1947 | { | |
1948 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1949 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1950 | sattr->ia_valid |= ATTR_ATIME; | |
1951 | ||
1952 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1953 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1954 | sattr->ia_valid |= ATTR_MTIME; | |
1955 | } | |
1956 | ||
1da177e4 | 1957 | /* |
24ac23ab | 1958 | * Returns a referenced nfs4_state |
1da177e4 | 1959 | */ |
82be417a AA |
1960 | static int _nfs4_do_open(struct inode *dir, |
1961 | struct dentry *dentry, | |
1962 | fmode_t fmode, | |
1963 | int flags, | |
1964 | struct iattr *sattr, | |
1965 | struct rpc_cred *cred, | |
1966 | struct nfs4_state **res, | |
1967 | struct nfs4_threshold **ctx_th) | |
1da177e4 LT |
1968 | { |
1969 | struct nfs4_state_owner *sp; | |
1970 | struct nfs4_state *state = NULL; | |
1971 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1972 | struct nfs4_opendata *opendata; |
aac00a8d | 1973 | int status; |
1da177e4 LT |
1974 | |
1975 | /* Protect against reboot recovery conflicts */ | |
1da177e4 | 1976 | status = -ENOMEM; |
d1e284d5 TM |
1977 | sp = nfs4_get_state_owner(server, cred, GFP_KERNEL); |
1978 | if (sp == NULL) { | |
1da177e4 LT |
1979 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); |
1980 | goto out_err; | |
1981 | } | |
58d9714a TM |
1982 | status = nfs4_recover_expired_lease(server); |
1983 | if (status != 0) | |
b4454fe1 | 1984 | goto err_put_state_owner; |
82a2c1b7 AV |
1985 | if (dentry->d_inode != NULL) |
1986 | nfs4_return_incompatible_delegation(dentry->d_inode, fmode); | |
58d9714a | 1987 | status = -ENOMEM; |
82a2c1b7 | 1988 | opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr, GFP_KERNEL); |
e56e0b78 | 1989 | if (opendata == NULL) |
95d35cb4 | 1990 | goto err_put_state_owner; |
1da177e4 | 1991 | |
82be417a AA |
1992 | if (ctx_th && server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) { |
1993 | opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc(); | |
1994 | if (!opendata->f_attr.mdsthreshold) | |
1995 | goto err_opendata_put; | |
1549210f | 1996 | opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0]; |
82be417a | 1997 | } |
82a2c1b7 AV |
1998 | if (dentry->d_inode != NULL) |
1999 | opendata->state = nfs4_get_open_state(dentry->d_inode, sp); | |
aac00a8d | 2000 | |
24ac23ab | 2001 | status = _nfs4_proc_open(opendata); |
1da177e4 | 2002 | if (status != 0) |
c6d00e63 | 2003 | goto err_opendata_put; |
1da177e4 | 2004 | |
24ac23ab | 2005 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
2006 | status = PTR_ERR(state); |
2007 | if (IS_ERR(state)) | |
c6d00e63 | 2008 | goto err_opendata_put; |
0df5dd4a | 2009 | if (server->caps & NFS_CAP_POSIX_LOCK) |
8e469ebd | 2010 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); |
0ab64e0e | 2011 | |
6168f62c WAA |
2012 | status = nfs4_opendata_access(cred, opendata, state, fmode); |
2013 | if (status != 0) | |
2014 | goto err_opendata_put; | |
2015 | ||
0ab64e0e TM |
2016 | if (opendata->o_arg.open_flags & O_EXCL) { |
2017 | nfs4_exclusive_attrset(opendata, sattr); | |
2018 | ||
2019 | nfs_fattr_init(opendata->o_res.f_attr); | |
2020 | status = nfs4_do_setattr(state->inode, cred, | |
2021 | opendata->o_res.f_attr, sattr, | |
2022 | state); | |
2023 | if (status == 0) | |
2024 | nfs_setattr_update_inode(state->inode, sattr); | |
2025 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
2026 | } | |
82be417a AA |
2027 | |
2028 | if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) | |
2029 | *ctx_th = opendata->f_attr.mdsthreshold; | |
2030 | else | |
2031 | kfree(opendata->f_attr.mdsthreshold); | |
2032 | opendata->f_attr.mdsthreshold = NULL; | |
2033 | ||
c6d00e63 | 2034 | nfs4_opendata_put(opendata); |
1da177e4 | 2035 | nfs4_put_state_owner(sp); |
1da177e4 LT |
2036 | *res = state; |
2037 | return 0; | |
c6d00e63 | 2038 | err_opendata_put: |
82be417a | 2039 | kfree(opendata->f_attr.mdsthreshold); |
c6d00e63 | 2040 | nfs4_opendata_put(opendata); |
e56e0b78 TM |
2041 | err_put_state_owner: |
2042 | nfs4_put_state_owner(sp); | |
1da177e4 | 2043 | out_err: |
1da177e4 LT |
2044 | *res = NULL; |
2045 | return status; | |
2046 | } | |
2047 | ||
2048 | ||
82be417a AA |
2049 | static struct nfs4_state *nfs4_do_open(struct inode *dir, |
2050 | struct dentry *dentry, | |
2051 | fmode_t fmode, | |
2052 | int flags, | |
2053 | struct iattr *sattr, | |
2054 | struct rpc_cred *cred, | |
2055 | struct nfs4_threshold **ctx_th) | |
1da177e4 LT |
2056 | { |
2057 | struct nfs4_exception exception = { }; | |
2058 | struct nfs4_state *res; | |
2059 | int status; | |
2060 | ||
6168f62c | 2061 | fmode &= FMODE_READ|FMODE_WRITE|FMODE_EXEC; |
1da177e4 | 2062 | do { |
82be417a AA |
2063 | status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, cred, |
2064 | &res, ctx_th); | |
1da177e4 LT |
2065 | if (status == 0) |
2066 | break; | |
2067 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
2068 | * book-keeping w.r.t. state-changing operations | |
2069 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
2070 | * It is actually a sign of a bug on the client or on the server. | |
2071 | * | |
2072 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 2073 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
2074 | * have unhashed the old state_owner for us, and that we can |
2075 | * therefore safely retry using a new one. We should still warn | |
2076 | * the user though... | |
2077 | */ | |
2078 | if (status == -NFS4ERR_BAD_SEQID) { | |
9a3ba432 | 2079 | pr_warn_ratelimited("NFS: v4 server %s " |
6f43ddcc TM |
2080 | " returned a bad sequence-id error!\n", |
2081 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
2082 | exception.retry = 1; |
2083 | continue; | |
2084 | } | |
550f5747 TM |
2085 | /* |
2086 | * BAD_STATEID on OPEN means that the server cancelled our | |
2087 | * state before it received the OPEN_CONFIRM. | |
2088 | * Recover by retrying the request as per the discussion | |
2089 | * on Page 181 of RFC3530. | |
2090 | */ | |
2091 | if (status == -NFS4ERR_BAD_STATEID) { | |
2092 | exception.retry = 1; | |
2093 | continue; | |
2094 | } | |
aac00a8d TM |
2095 | if (status == -EAGAIN) { |
2096 | /* We must have found a delegation */ | |
2097 | exception.retry = 1; | |
2098 | continue; | |
2099 | } | |
1da177e4 LT |
2100 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
2101 | status, &exception)); | |
2102 | } while (exception.retry); | |
2103 | return res; | |
2104 | } | |
2105 | ||
659bfcd6 TM |
2106 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2107 | struct nfs_fattr *fattr, struct iattr *sattr, | |
2108 | struct nfs4_state *state) | |
1da177e4 | 2109 | { |
3e4f6290 | 2110 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 2111 | struct nfs_setattrargs arg = { |
3e4f6290 | 2112 | .fh = NFS_FH(inode), |
1da177e4 LT |
2113 | .iap = sattr, |
2114 | .server = server, | |
2115 | .bitmask = server->attr_bitmask, | |
2116 | }; | |
2117 | struct nfs_setattrres res = { | |
2118 | .fattr = fattr, | |
2119 | .server = server, | |
2120 | }; | |
2121 | struct rpc_message msg = { | |
659bfcd6 TM |
2122 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
2123 | .rpc_argp = &arg, | |
2124 | .rpc_resp = &res, | |
2125 | .rpc_cred = cred, | |
1da177e4 | 2126 | }; |
26e976a8 | 2127 | unsigned long timestamp = jiffies; |
65e4308d | 2128 | int status; |
1da177e4 | 2129 | |
0e574af1 | 2130 | nfs_fattr_init(fattr); |
1da177e4 | 2131 | |
4fc8796d | 2132 | if (state != NULL) { |
2a369153 TM |
2133 | struct nfs_lockowner lockowner = { |
2134 | .l_owner = current->files, | |
2135 | .l_pid = current->tgid, | |
2136 | }; | |
4fc8796d | 2137 | nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE, |
2a369153 | 2138 | &lockowner); |
4fc8796d TM |
2139 | } else if (nfs4_copy_delegation_stateid(&arg.stateid, inode, |
2140 | FMODE_WRITE)) { | |
3e4f6290 | 2141 | /* Use that stateid */ |
08e9eac4 | 2142 | } else |
f597c537 | 2143 | nfs4_stateid_copy(&arg.stateid, &zero_stateid); |
1da177e4 | 2144 | |
7c513058 | 2145 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
2146 | if (status == 0 && state != NULL) |
2147 | renew_lease(server, timestamp); | |
65e4308d | 2148 | return status; |
1da177e4 LT |
2149 | } |
2150 | ||
659bfcd6 TM |
2151 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
2152 | struct nfs_fattr *fattr, struct iattr *sattr, | |
2153 | struct nfs4_state *state) | |
1da177e4 | 2154 | { |
3e4f6290 | 2155 | struct nfs_server *server = NFS_SERVER(inode); |
a1d0b5ee TM |
2156 | struct nfs4_exception exception = { |
2157 | .state = state, | |
3114ea7a | 2158 | .inode = inode, |
a1d0b5ee | 2159 | }; |
1da177e4 LT |
2160 | int err; |
2161 | do { | |
451146be TM |
2162 | err = _nfs4_do_setattr(inode, cred, fattr, sattr, state); |
2163 | switch (err) { | |
2164 | case -NFS4ERR_OPENMODE: | |
2165 | if (state && !(state->state & FMODE_WRITE)) { | |
2166 | err = -EBADF; | |
2167 | if (sattr->ia_valid & ATTR_OPEN) | |
2168 | err = -EACCES; | |
2169 | goto out; | |
2170 | } | |
2171 | } | |
2172 | err = nfs4_handle_exception(server, err, &exception); | |
1da177e4 | 2173 | } while (exception.retry); |
451146be | 2174 | out: |
1da177e4 LT |
2175 | return err; |
2176 | } | |
2177 | ||
2178 | struct nfs4_closedata { | |
2179 | struct inode *inode; | |
2180 | struct nfs4_state *state; | |
2181 | struct nfs_closeargs arg; | |
2182 | struct nfs_closeres res; | |
516a6af6 | 2183 | struct nfs_fattr fattr; |
26e976a8 | 2184 | unsigned long timestamp; |
f7e8917a FI |
2185 | bool roc; |
2186 | u32 roc_barrier; | |
1da177e4 LT |
2187 | }; |
2188 | ||
963d8fe5 | 2189 | static void nfs4_free_closedata(void *data) |
9512135d | 2190 | { |
963d8fe5 TM |
2191 | struct nfs4_closedata *calldata = data; |
2192 | struct nfs4_state_owner *sp = calldata->state->owner; | |
643168c2 | 2193 | struct super_block *sb = calldata->state->inode->i_sb; |
9512135d | 2194 | |
f7e8917a FI |
2195 | if (calldata->roc) |
2196 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
2197 | nfs4_put_open_state(calldata->state); |
2198 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 2199 | nfs4_put_state_owner(sp); |
643168c2 | 2200 | nfs_sb_deactive(sb); |
9512135d TM |
2201 | kfree(calldata); |
2202 | } | |
2203 | ||
88069f77 TM |
2204 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
2205 | fmode_t fmode) | |
2206 | { | |
2207 | spin_lock(&state->owner->so_lock); | |
2208 | if (!(fmode & FMODE_READ)) | |
2209 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
2210 | if (!(fmode & FMODE_WRITE)) | |
2211 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
2212 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
2213 | spin_unlock(&state->owner->so_lock); | |
2214 | } | |
2215 | ||
963d8fe5 | 2216 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 2217 | { |
963d8fe5 | 2218 | struct nfs4_closedata *calldata = data; |
1da177e4 | 2219 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
2220 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
2221 | ||
a3ca5651 | 2222 | dprintk("%s: begin!\n", __func__); |
14516c3a TM |
2223 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
2224 | return; | |
1da177e4 LT |
2225 | /* hmm. we are done with the inode, and in the process of freeing |
2226 | * the state_owner. we keep this around to process errors | |
2227 | */ | |
1da177e4 LT |
2228 | switch (task->tk_status) { |
2229 | case 0: | |
f7e8917a FI |
2230 | if (calldata->roc) |
2231 | pnfs_roc_set_barrier(state->inode, | |
2232 | calldata->roc_barrier); | |
45328c35 | 2233 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 2234 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
2235 | nfs4_close_clear_stateid_flags(state, |
2236 | calldata->arg.fmode); | |
1da177e4 LT |
2237 | break; |
2238 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
2239 | case -NFS4ERR_OLD_STATEID: |
2240 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 2241 | case -NFS4ERR_EXPIRED: |
dc0b027d | 2242 | if (calldata->arg.fmode == 0) |
9e33bed5 | 2243 | break; |
1da177e4 | 2244 | default: |
72211dbe TM |
2245 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
2246 | rpc_restart_call_prepare(task); | |
1da177e4 | 2247 | } |
72211dbe | 2248 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 2249 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
a3ca5651 | 2250 | dprintk("%s: done, ret = %d!\n", __func__, task->tk_status); |
1da177e4 LT |
2251 | } |
2252 | ||
4ce70ada | 2253 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 2254 | { |
4ce70ada | 2255 | struct nfs4_closedata *calldata = data; |
9512135d | 2256 | struct nfs4_state *state = calldata->state; |
7fdab069 | 2257 | struct inode *inode = calldata->inode; |
88069f77 | 2258 | int call_close = 0; |
9512135d | 2259 | |
a3ca5651 | 2260 | dprintk("%s: begin!\n", __func__); |
963d8fe5 | 2261 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 2262 | return; |
003707c7 | 2263 | |
88069f77 TM |
2264 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
2265 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 2266 | spin_lock(&state->owner->so_lock); |
003707c7 | 2267 | /* Calculate the change in open mode */ |
e7616923 | 2268 | if (state->n_rdwr == 0) { |
003707c7 | 2269 | if (state->n_rdonly == 0) { |
88069f77 TM |
2270 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
2271 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2272 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
2273 | } |
2274 | if (state->n_wronly == 0) { | |
88069f77 TM |
2275 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
2276 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
2277 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 2278 | } |
e7616923 | 2279 | } |
4cecb76f | 2280 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
2281 | |
2282 | if (!call_close) { | |
963d8fe5 TM |
2283 | /* Note: exit _without_ calling nfs4_close_done */ |
2284 | task->tk_action = NULL; | |
a3ca5651 | 2285 | goto out; |
9512135d | 2286 | } |
88069f77 | 2287 | |
f7e8917a | 2288 | if (calldata->arg.fmode == 0) { |
88069f77 | 2289 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a | 2290 | if (calldata->roc && |
7fdab069 | 2291 | pnfs_roc_drain(inode, &calldata->roc_barrier, task)) |
a3ca5651 | 2292 | goto out; |
f7e8917a | 2293 | } |
88069f77 | 2294 | |
516a6af6 | 2295 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 2296 | calldata->timestamp = jiffies; |
7fdab069 | 2297 | if (nfs4_setup_sequence(NFS_SERVER(inode), |
9d12b216 TM |
2298 | &calldata->arg.seq_args, |
2299 | &calldata->res.seq_res, | |
2240a9e2 TM |
2300 | task) != 0) |
2301 | nfs_release_seqid(calldata->arg.seqid); | |
2302 | else | |
2303 | rpc_call_start(task); | |
a3ca5651 CL |
2304 | out: |
2305 | dprintk("%s: done!\n", __func__); | |
1da177e4 LT |
2306 | } |
2307 | ||
963d8fe5 | 2308 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2309 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2310 | .rpc_call_done = nfs4_close_done, |
2311 | .rpc_release = nfs4_free_closedata, | |
2312 | }; | |
2313 | ||
1da177e4 LT |
2314 | /* |
2315 | * It is possible for data to be read/written from a mem-mapped file | |
2316 | * after the sys_close call (which hits the vfs layer as a flush). | |
2317 | * This means that we can't safely call nfsv4 close on a file until | |
2318 | * the inode is cleared. This in turn means that we are not good | |
2319 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2320 | * share state even when we are done with one of the three share | |
2321 | * stateid's in the inode. | |
2322 | * | |
2323 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2324 | */ | |
1f7977c1 | 2325 | int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait) |
1da177e4 | 2326 | { |
4a35bd41 | 2327 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2328 | struct nfs4_closedata *calldata; |
b39e625b TM |
2329 | struct nfs4_state_owner *sp = state->owner; |
2330 | struct rpc_task *task; | |
5138fde0 TM |
2331 | struct rpc_message msg = { |
2332 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2333 | .rpc_cred = state->owner->so_cred, | |
2334 | }; | |
c970aa85 TM |
2335 | struct rpc_task_setup task_setup_data = { |
2336 | .rpc_client = server->client, | |
5138fde0 | 2337 | .rpc_message = &msg, |
c970aa85 | 2338 | .callback_ops = &nfs4_close_ops, |
101070ca | 2339 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2340 | .flags = RPC_TASK_ASYNC, |
2341 | }; | |
9512135d | 2342 | int status = -ENOMEM; |
1da177e4 | 2343 | |
8535b2be | 2344 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2345 | if (calldata == NULL) |
9512135d | 2346 | goto out; |
9d12b216 | 2347 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1); |
4a35bd41 | 2348 | calldata->inode = state->inode; |
1da177e4 | 2349 | calldata->state = state; |
4a35bd41 | 2350 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2351 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2352 | /* Serialization for the sequence id */ |
8535b2be | 2353 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2354 | if (calldata->arg.seqid == NULL) |
2355 | goto out_free_calldata; | |
dc0b027d | 2356 | calldata->arg.fmode = 0; |
a65318bf | 2357 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2358 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2359 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2360 | calldata->res.server = server; |
1f7977c1 | 2361 | calldata->roc = pnfs_roc(state->inode); |
643168c2 | 2362 | nfs_sb_active(calldata->inode->i_sb); |
9512135d | 2363 | |
1174dd1f TM |
2364 | msg.rpc_argp = &calldata->arg; |
2365 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2366 | task_setup_data.callback_data = calldata; |
2367 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2368 | if (IS_ERR(task)) |
2369 | return PTR_ERR(task); | |
a49c3c77 TM |
2370 | status = 0; |
2371 | if (wait) | |
2372 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2373 | rpc_put_task(task); |
a49c3c77 | 2374 | return status; |
9512135d TM |
2375 | out_free_calldata: |
2376 | kfree(calldata); | |
2377 | out: | |
b39e625b TM |
2378 | nfs4_put_open_state(state); |
2379 | nfs4_put_state_owner(sp); | |
9512135d | 2380 | return status; |
1da177e4 LT |
2381 | } |
2382 | ||
2b484297 | 2383 | static struct inode * |
cd9a1c0e | 2384 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2385 | { |
1da177e4 | 2386 | struct nfs4_state *state; |
1da177e4 | 2387 | |
565277f6 | 2388 | /* Protect against concurrent sillydeletes */ |
82be417a AA |
2389 | state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr, |
2390 | ctx->cred, &ctx->mdsthreshold); | |
f46e0bd3 TM |
2391 | if (IS_ERR(state)) |
2392 | return ERR_CAST(state); | |
cd9a1c0e | 2393 | ctx->state = state; |
f46e0bd3 | 2394 | return igrab(state->inode); |
1da177e4 LT |
2395 | } |
2396 | ||
1185a552 | 2397 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2398 | { |
2399 | if (ctx->state == NULL) | |
2400 | return; | |
2401 | if (is_sync) | |
643168c2 | 2402 | nfs4_close_sync(ctx->state, ctx->mode); |
7fe5c398 | 2403 | else |
643168c2 | 2404 | nfs4_close_state(ctx->state, ctx->mode); |
7fe5c398 | 2405 | } |
1da177e4 LT |
2406 | |
2407 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2408 | { | |
43652ad5 BH |
2409 | struct nfs4_server_caps_arg args = { |
2410 | .fhandle = fhandle, | |
2411 | }; | |
1da177e4 LT |
2412 | struct nfs4_server_caps_res res = {}; |
2413 | struct rpc_message msg = { | |
2414 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2415 | .rpc_argp = &args, |
1da177e4 LT |
2416 | .rpc_resp = &res, |
2417 | }; | |
2418 | int status; | |
2419 | ||
7c513058 | 2420 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2421 | if (status == 0) { |
2422 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2423 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2424 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2425 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2426 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2427 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2428 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2429 | server->caps |= NFS_CAP_ACLS; | |
2430 | if (res.has_links != 0) | |
2431 | server->caps |= NFS_CAP_HARDLINKS; | |
2432 | if (res.has_symlinks != 0) | |
2433 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2434 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2435 | server->caps |= NFS_CAP_FILEID; | |
2436 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2437 | server->caps |= NFS_CAP_MODE; | |
2438 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2439 | server->caps |= NFS_CAP_NLINK; | |
2440 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2441 | server->caps |= NFS_CAP_OWNER; | |
2442 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2443 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2444 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2445 | server->caps |= NFS_CAP_ATIME; | |
2446 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2447 | server->caps |= NFS_CAP_CTIME; | |
2448 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2449 | server->caps |= NFS_CAP_MTIME; | |
2450 | ||
a65318bf TM |
2451 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2452 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2453 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 | 2454 | server->acl_bitmask = res.acl_bitmask; |
264e6351 | 2455 | server->fh_expire_type = res.fh_expire_type; |
1da177e4 | 2456 | } |
cccef3b9 | 2457 | |
1da177e4 LT |
2458 | return status; |
2459 | } | |
2460 | ||
55a97593 | 2461 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2462 | { |
2463 | struct nfs4_exception exception = { }; | |
2464 | int err; | |
2465 | do { | |
2466 | err = nfs4_handle_exception(server, | |
2467 | _nfs4_server_capabilities(server, fhandle), | |
2468 | &exception); | |
2469 | } while (exception.retry); | |
2470 | return err; | |
2471 | } | |
2472 | ||
2473 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2474 | struct nfs_fsinfo *info) | |
2475 | { | |
1da177e4 LT |
2476 | struct nfs4_lookup_root_arg args = { |
2477 | .bitmask = nfs4_fattr_bitmap, | |
2478 | }; | |
2479 | struct nfs4_lookup_res res = { | |
2480 | .server = server, | |
0e574af1 | 2481 | .fattr = info->fattr, |
1da177e4 LT |
2482 | .fh = fhandle, |
2483 | }; | |
2484 | struct rpc_message msg = { | |
2485 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2486 | .rpc_argp = &args, | |
2487 | .rpc_resp = &res, | |
2488 | }; | |
008f55d0 | 2489 | |
0e574af1 | 2490 | nfs_fattr_init(info->fattr); |
7c513058 | 2491 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2492 | } |
2493 | ||
2494 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2495 | struct nfs_fsinfo *info) | |
2496 | { | |
2497 | struct nfs4_exception exception = { }; | |
2498 | int err; | |
2499 | do { | |
fb8a5ba8 BS |
2500 | err = _nfs4_lookup_root(server, fhandle, info); |
2501 | switch (err) { | |
2502 | case 0: | |
2503 | case -NFS4ERR_WRONGSEC: | |
05e9cfb4 | 2504 | goto out; |
fb8a5ba8 BS |
2505 | default: |
2506 | err = nfs4_handle_exception(server, err, &exception); | |
2507 | } | |
1da177e4 | 2508 | } while (exception.retry); |
05e9cfb4 | 2509 | out: |
1da177e4 LT |
2510 | return err; |
2511 | } | |
2512 | ||
8f70e95f BS |
2513 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2514 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2515 | { | |
2516 | struct rpc_auth *auth; | |
2517 | int ret; | |
2518 | ||
2519 | auth = rpcauth_create(flavor, server->client); | |
e8d920c5 | 2520 | if (IS_ERR(auth)) { |
8f70e95f BS |
2521 | ret = -EIO; |
2522 | goto out; | |
2523 | } | |
2524 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2525 | out: |
2526 | return ret; | |
2527 | } | |
2528 | ||
801a16dc | 2529 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2530 | struct nfs_fsinfo *info) |
1da177e4 | 2531 | { |
8f70e95f | 2532 | int i, len, status = 0; |
0fabee24 | 2533 | rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS]; |
1da177e4 | 2534 | |
6a1a1e34 CL |
2535 | len = rpcauth_list_flavors(flav_array, ARRAY_SIZE(flav_array)); |
2536 | BUG_ON(len < 0); | |
8f70e95f BS |
2537 | |
2538 | for (i = 0; i < len; i++) { | |
6a1a1e34 CL |
2539 | /* AUTH_UNIX is the default flavor if none was specified, |
2540 | * thus has already been tried. */ | |
2541 | if (flav_array[i] == RPC_AUTH_UNIX) | |
2542 | continue; | |
2543 | ||
8f70e95f | 2544 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); |
fb8a5ba8 | 2545 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2546 | continue; |
2547 | break; | |
8f70e95f | 2548 | } |
fb8a5ba8 BS |
2549 | /* |
2550 | * -EACCESS could mean that the user doesn't have correct permissions | |
2551 | * to access the mount. It could also mean that we tried to mount | |
2552 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2553 | * existing mount programs don't handle -EACCES very well so it should | |
2554 | * be mapped to -EPERM instead. | |
2555 | */ | |
2556 | if (status == -EACCES) | |
2557 | status = -EPERM; | |
801a16dc BS |
2558 | return status; |
2559 | } | |
2560 | ||
2561 | /* | |
2562 | * get the file handle for the "/" directory on the server | |
2563 | */ | |
3028eb2b BS |
2564 | int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, |
2565 | struct nfs_fsinfo *info) | |
801a16dc | 2566 | { |
fca78d6d | 2567 | int minor_version = server->nfs_client->cl_minorversion; |
801a16dc | 2568 | int status = nfs4_lookup_root(server, fhandle, info); |
fb8a5ba8 BS |
2569 | if ((status == -NFS4ERR_WRONGSEC) && !(server->flags & NFS_MOUNT_SECFLAVOUR)) |
2570 | /* | |
2571 | * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM | |
2572 | * by nfs4_map_errors() as this function exits. | |
2573 | */ | |
fca78d6d | 2574 | status = nfs_v4_minor_ops[minor_version]->find_root_sec(server, fhandle, info); |
1da177e4 LT |
2575 | if (status == 0) |
2576 | status = nfs4_server_capabilities(server, fhandle); | |
2577 | if (status == 0) | |
2578 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2579 | return nfs4_map_errors(status); |
1da177e4 LT |
2580 | } |
2581 | ||
bae36241 BS |
2582 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh, |
2583 | struct nfs_fsinfo *info) | |
2584 | { | |
2585 | int error; | |
2586 | struct nfs_fattr *fattr = info->fattr; | |
2587 | ||
2588 | error = nfs4_server_capabilities(server, mntfh); | |
2589 | if (error < 0) { | |
2590 | dprintk("nfs4_get_root: getcaps error = %d\n", -error); | |
2591 | return error; | |
2592 | } | |
2593 | ||
2594 | error = nfs4_proc_getattr(server, mntfh, fattr); | |
2595 | if (error < 0) { | |
2596 | dprintk("nfs4_get_root: getattr error = %d\n", -error); | |
2597 | return error; | |
2598 | } | |
2599 | ||
2600 | if (fattr->valid & NFS_ATTR_FATTR_FSID && | |
2601 | !nfs_fsid_equal(&server->fsid, &fattr->fsid)) | |
2602 | memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); | |
2603 | ||
2604 | return error; | |
2605 | } | |
2606 | ||
6b97fd3d MN |
2607 | /* |
2608 | * Get locations and (maybe) other attributes of a referral. | |
2609 | * Note that we'll actually follow the referral later when | |
2610 | * we detect fsid mismatch in inode revalidation | |
2611 | */ | |
f05d147f BS |
2612 | static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, |
2613 | const struct qstr *name, struct nfs_fattr *fattr, | |
2614 | struct nfs_fh *fhandle) | |
6b97fd3d MN |
2615 | { |
2616 | int status = -ENOMEM; | |
2617 | struct page *page = NULL; | |
2618 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2619 | |
2620 | page = alloc_page(GFP_KERNEL); | |
2621 | if (page == NULL) | |
2622 | goto out; | |
2623 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2624 | if (locations == NULL) | |
2625 | goto out; | |
2626 | ||
f05d147f | 2627 | status = nfs4_proc_fs_locations(client, dir, name, locations, page); |
6b97fd3d MN |
2628 | if (status != 0) |
2629 | goto out; | |
2630 | /* Make sure server returned a different fsid for the referral */ | |
2631 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2632 | dprintk("%s: server did not return a different fsid for" |
2633 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2634 | status = -EIO; |
2635 | goto out; | |
2636 | } | |
533eb461 AA |
2637 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2638 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2639 | |
533eb461 | 2640 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2641 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2642 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2643 | out: | |
2644 | if (page) | |
2645 | __free_page(page); | |
5d7ca35a | 2646 | kfree(locations); |
6b97fd3d MN |
2647 | return status; |
2648 | } | |
2649 | ||
1da177e4 LT |
2650 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2651 | { | |
2652 | struct nfs4_getattr_arg args = { | |
2653 | .fh = fhandle, | |
2654 | .bitmask = server->attr_bitmask, | |
2655 | }; | |
2656 | struct nfs4_getattr_res res = { | |
2657 | .fattr = fattr, | |
2658 | .server = server, | |
2659 | }; | |
2660 | struct rpc_message msg = { | |
2661 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2662 | .rpc_argp = &args, | |
2663 | .rpc_resp = &res, | |
2664 | }; | |
2665 | ||
0e574af1 | 2666 | nfs_fattr_init(fattr); |
7c513058 | 2667 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2668 | } |
2669 | ||
2670 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2671 | { | |
2672 | struct nfs4_exception exception = { }; | |
2673 | int err; | |
2674 | do { | |
2675 | err = nfs4_handle_exception(server, | |
2676 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2677 | &exception); | |
2678 | } while (exception.retry); | |
2679 | return err; | |
2680 | } | |
2681 | ||
2682 | /* | |
2683 | * The file is not closed if it is opened due to the a request to change | |
2684 | * the size of the file. The open call will not be needed once the | |
2685 | * VFS layer lookup-intents are implemented. | |
2686 | * | |
2687 | * Close is called when the inode is destroyed. | |
2688 | * If we haven't opened the file for O_WRONLY, we | |
2689 | * need to in the size_change case to obtain a stateid. | |
2690 | * | |
2691 | * Got race? | |
2692 | * Because OPEN is always done by name in nfsv4, it is | |
2693 | * possible that we opened a different file by the same | |
2694 | * name. We can recognize this race condition, but we | |
2695 | * can't do anything about it besides returning an error. | |
2696 | * | |
2697 | * This will be fixed with VFS changes (lookup-intent). | |
2698 | */ | |
2699 | static int | |
2700 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2701 | struct iattr *sattr) | |
2702 | { | |
08e9eac4 | 2703 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2704 | struct rpc_cred *cred = NULL; |
d530838b | 2705 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2706 | int status; |
2707 | ||
8a1636c4 BH |
2708 | if (pnfs_ld_layoutret_on_setattr(inode)) |
2709 | pnfs_return_layout(inode); | |
2710 | ||
0e574af1 | 2711 | nfs_fattr_init(fattr); |
1da177e4 | 2712 | |
2669940d AA |
2713 | /* Deal with open(O_TRUNC) */ |
2714 | if (sattr->ia_valid & ATTR_OPEN) | |
2715 | sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME|ATTR_OPEN); | |
2716 | ||
2717 | /* Optimization: if the end result is no change, don't RPC */ | |
2718 | if ((sattr->ia_valid & ~(ATTR_FILE)) == 0) | |
2719 | return 0; | |
2720 | ||
d530838b | 2721 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2722 | if (sattr->ia_valid & ATTR_FILE) { |
2723 | struct nfs_open_context *ctx; | |
2724 | ||
2725 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2726 | if (ctx) { |
2727 | cred = ctx->cred; | |
2728 | state = ctx->state; | |
2729 | } | |
659bfcd6 | 2730 | } |
08e9eac4 | 2731 | |
659bfcd6 | 2732 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2733 | if (status == 0) |
2734 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2735 | return status; |
2736 | } | |
2737 | ||
0c2e53f1 TM |
2738 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2739 | const struct qstr *name, struct nfs_fh *fhandle, | |
2740 | struct nfs_fattr *fattr) | |
2b3de441 | 2741 | { |
0c2e53f1 | 2742 | struct nfs_server *server = NFS_SERVER(dir); |
2b3de441 DH |
2743 | int status; |
2744 | struct nfs4_lookup_arg args = { | |
2745 | .bitmask = server->attr_bitmask, | |
0c2e53f1 | 2746 | .dir_fh = NFS_FH(dir), |
2b3de441 DH |
2747 | .name = name, |
2748 | }; | |
2749 | struct nfs4_lookup_res res = { | |
2750 | .server = server, | |
2751 | .fattr = fattr, | |
2752 | .fh = fhandle, | |
2753 | }; | |
2754 | struct rpc_message msg = { | |
2755 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2756 | .rpc_argp = &args, | |
2757 | .rpc_resp = &res, | |
2758 | }; | |
2759 | ||
2760 | nfs_fattr_init(fattr); | |
2761 | ||
1da177e4 | 2762 | dprintk("NFS call lookup %s\n", name->name); |
0c2e53f1 | 2763 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2764 | dprintk("NFS reply lookup: %d\n", status); |
2765 | return status; | |
2766 | } | |
2767 | ||
72de53ec | 2768 | static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) |
7ebb9315 | 2769 | { |
7ebb9315 | 2770 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | |
72de53ec | 2771 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; |
7ebb9315 BS |
2772 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
2773 | fattr->nlink = 2; | |
2774 | } | |
2775 | ||
72de53ec BS |
2776 | static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, |
2777 | struct qstr *name, struct nfs_fh *fhandle, | |
2778 | struct nfs_fattr *fattr) | |
1da177e4 LT |
2779 | { |
2780 | struct nfs4_exception exception = { }; | |
72de53ec | 2781 | struct rpc_clnt *client = *clnt; |
1da177e4 LT |
2782 | int err; |
2783 | do { | |
72de53ec BS |
2784 | err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr); |
2785 | switch (err) { | |
08ef7bd3 | 2786 | case -NFS4ERR_BADNAME: |
72de53ec BS |
2787 | err = -ENOENT; |
2788 | goto out; | |
0c2e53f1 | 2789 | case -NFS4ERR_MOVED: |
f05d147f | 2790 | err = nfs4_get_referral(client, dir, name, fattr, fhandle); |
72de53ec | 2791 | goto out; |
0c2e53f1 | 2792 | case -NFS4ERR_WRONGSEC: |
72de53ec BS |
2793 | err = -EPERM; |
2794 | if (client != *clnt) | |
2795 | goto out; | |
2796 | ||
2797 | client = nfs4_create_sec_client(client, dir, name); | |
2798 | if (IS_ERR(client)) | |
2799 | return PTR_ERR(client); | |
2800 | ||
2801 | exception.retry = 1; | |
2802 | break; | |
2803 | default: | |
2804 | err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); | |
0c2e53f1 | 2805 | } |
1da177e4 | 2806 | } while (exception.retry); |
72de53ec BS |
2807 | |
2808 | out: | |
2809 | if (err == 0) | |
2810 | *clnt = client; | |
2811 | else if (client != *clnt) | |
2812 | rpc_shutdown_client(client); | |
2813 | ||
1da177e4 LT |
2814 | return err; |
2815 | } | |
2816 | ||
80a16b21 | 2817 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, |
72de53ec BS |
2818 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2819 | { | |
2820 | int status; | |
2821 | struct rpc_clnt *client = NFS_CLIENT(dir); | |
2822 | ||
2823 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2824 | if (client != NFS_CLIENT(dir)) { | |
2825 | rpc_shutdown_client(client); | |
2826 | nfs_fixup_secinfo_attributes(fattr); | |
2827 | } | |
2828 | return status; | |
2829 | } | |
2830 | ||
f05d147f BS |
2831 | struct rpc_clnt * |
2832 | nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, | |
2833 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2834 | { | |
2835 | int status; | |
2836 | struct rpc_clnt *client = rpc_clone_client(NFS_CLIENT(dir)); | |
2837 | ||
2838 | status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); | |
2839 | if (status < 0) { | |
2840 | rpc_shutdown_client(client); | |
2841 | return ERR_PTR(status); | |
2842 | } | |
2843 | return client; | |
2844 | } | |
2845 | ||
1da177e4 LT |
2846 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) |
2847 | { | |
76b32999 | 2848 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2849 | struct nfs4_accessargs args = { |
2850 | .fh = NFS_FH(inode), | |
a4980e78 | 2851 | .bitmask = server->cache_consistency_bitmask, |
76b32999 TM |
2852 | }; |
2853 | struct nfs4_accessres res = { | |
2854 | .server = server, | |
1da177e4 | 2855 | }; |
1da177e4 LT |
2856 | struct rpc_message msg = { |
2857 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2858 | .rpc_argp = &args, | |
2859 | .rpc_resp = &res, | |
2860 | .rpc_cred = entry->cred, | |
2861 | }; | |
2862 | int mode = entry->mask; | |
2863 | int status; | |
2864 | ||
2865 | /* | |
2866 | * Determine which access bits we want to ask for... | |
2867 | */ | |
2868 | if (mode & MAY_READ) | |
2869 | args.access |= NFS4_ACCESS_READ; | |
2870 | if (S_ISDIR(inode->i_mode)) { | |
2871 | if (mode & MAY_WRITE) | |
2872 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2873 | if (mode & MAY_EXEC) | |
2874 | args.access |= NFS4_ACCESS_LOOKUP; | |
2875 | } else { | |
2876 | if (mode & MAY_WRITE) | |
2877 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2878 | if (mode & MAY_EXEC) | |
2879 | args.access |= NFS4_ACCESS_EXECUTE; | |
2880 | } | |
c407d41a TM |
2881 | |
2882 | res.fattr = nfs_alloc_fattr(); | |
2883 | if (res.fattr == NULL) | |
2884 | return -ENOMEM; | |
2885 | ||
7c513058 | 2886 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 | 2887 | if (!status) { |
6168f62c | 2888 | nfs_access_set_mask(entry, res.access); |
c407d41a | 2889 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2890 | } |
c407d41a | 2891 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2892 | return status; |
2893 | } | |
2894 | ||
2895 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2896 | { | |
2897 | struct nfs4_exception exception = { }; | |
2898 | int err; | |
2899 | do { | |
2900 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2901 | _nfs4_proc_access(inode, entry), | |
2902 | &exception); | |
2903 | } while (exception.retry); | |
2904 | return err; | |
2905 | } | |
2906 | ||
2907 | /* | |
2908 | * TODO: For the time being, we don't try to get any attributes | |
2909 | * along with any of the zero-copy operations READ, READDIR, | |
2910 | * READLINK, WRITE. | |
2911 | * | |
2912 | * In the case of the first three, we want to put the GETATTR | |
2913 | * after the read-type operation -- this is because it is hard | |
2914 | * to predict the length of a GETATTR response in v4, and thus | |
2915 | * align the READ data correctly. This means that the GETATTR | |
2916 | * may end up partially falling into the page cache, and we should | |
2917 | * shift it into the 'tail' of the xdr_buf before processing. | |
2918 | * To do this efficiently, we need to know the total length | |
2919 | * of data received, which doesn't seem to be available outside | |
2920 | * of the RPC layer. | |
2921 | * | |
2922 | * In the case of WRITE, we also want to put the GETATTR after | |
2923 | * the operation -- in this case because we want to make sure | |
140150db | 2924 | * we get the post-operation mtime and size. |
1da177e4 LT |
2925 | * |
2926 | * Both of these changes to the XDR layer would in fact be quite | |
2927 | * minor, but I decided to leave them for a subsequent patch. | |
2928 | */ | |
2929 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2930 | unsigned int pgbase, unsigned int pglen) | |
2931 | { | |
2932 | struct nfs4_readlink args = { | |
2933 | .fh = NFS_FH(inode), | |
2934 | .pgbase = pgbase, | |
2935 | .pglen = pglen, | |
2936 | .pages = &page, | |
2937 | }; | |
f50c7000 | 2938 | struct nfs4_readlink_res res; |
1da177e4 LT |
2939 | struct rpc_message msg = { |
2940 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2941 | .rpc_argp = &args, | |
f50c7000 | 2942 | .rpc_resp = &res, |
1da177e4 LT |
2943 | }; |
2944 | ||
7c513058 | 2945 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2946 | } |
2947 | ||
2948 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2949 | unsigned int pgbase, unsigned int pglen) | |
2950 | { | |
2951 | struct nfs4_exception exception = { }; | |
2952 | int err; | |
2953 | do { | |
2954 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2955 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2956 | &exception); | |
2957 | } while (exception.retry); | |
2958 | return err; | |
2959 | } | |
2960 | ||
1da177e4 | 2961 | /* |
8867fe58 | 2962 | * This is just for mknod. open(O_CREAT) will always do ->open_context(). |
1da177e4 | 2963 | */ |
1da177e4 LT |
2964 | static int |
2965 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 2966 | int flags) |
1da177e4 | 2967 | { |
8867fe58 | 2968 | struct nfs_open_context *ctx; |
1da177e4 | 2969 | struct nfs4_state *state; |
1da177e4 LT |
2970 | int status = 0; |
2971 | ||
8867fe58 MS |
2972 | ctx = alloc_nfs_open_context(dentry, FMODE_READ); |
2973 | if (IS_ERR(ctx)) | |
2974 | return PTR_ERR(ctx); | |
2975 | ||
a8a5da99 | 2976 | sattr->ia_mode &= ~current_umask(); |
8626e4a4 TM |
2977 | state = nfs4_do_open(dir, dentry, ctx->mode, |
2978 | flags, sattr, ctx->cred, | |
2979 | &ctx->mdsthreshold); | |
d4d9cdcb | 2980 | d_drop(dentry); |
1da177e4 LT |
2981 | if (IS_ERR(state)) { |
2982 | status = PTR_ERR(state); | |
c0204fd2 | 2983 | goto out; |
1da177e4 | 2984 | } |
d4d9cdcb | 2985 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2986 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
8867fe58 | 2987 | ctx->state = state; |
1da177e4 | 2988 | out: |
8867fe58 | 2989 | put_nfs_open_context(ctx); |
1da177e4 LT |
2990 | return status; |
2991 | } | |
2992 | ||
2993 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2994 | { | |
16e42959 | 2995 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2996 | struct nfs_removeargs args = { |
1da177e4 | 2997 | .fh = NFS_FH(dir), |
26fe5750 | 2998 | .name = *name, |
16e42959 | 2999 | }; |
4fdc17b2 | 3000 | struct nfs_removeres res = { |
16e42959 | 3001 | .server = server, |
1da177e4 | 3002 | }; |
1da177e4 | 3003 | struct rpc_message msg = { |
4fdc17b2 TM |
3004 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
3005 | .rpc_argp = &args, | |
3006 | .rpc_resp = &res, | |
1da177e4 | 3007 | }; |
778d2817 | 3008 | int status; |
1da177e4 | 3009 | |
7c513058 | 3010 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
778d2817 | 3011 | if (status == 0) |
16e42959 | 3012 | update_changeattr(dir, &res.cinfo); |
1da177e4 LT |
3013 | return status; |
3014 | } | |
3015 | ||
3016 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
3017 | { | |
3018 | struct nfs4_exception exception = { }; | |
3019 | int err; | |
3020 | do { | |
3021 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3022 | _nfs4_proc_remove(dir, name), | |
3023 | &exception); | |
3024 | } while (exception.retry); | |
3025 | return err; | |
3026 | } | |
3027 | ||
e4eff1a6 | 3028 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 3029 | { |
e4eff1a6 TM |
3030 | struct nfs_server *server = NFS_SERVER(dir); |
3031 | struct nfs_removeargs *args = msg->rpc_argp; | |
3032 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 3033 | |
e4eff1a6 | 3034 | res->server = server; |
1da177e4 | 3035 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
9d12b216 | 3036 | nfs41_init_sequence(&args->seq_args, &res->seq_res, 1); |
1da177e4 LT |
3037 | } |
3038 | ||
34e137cc BS |
3039 | static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
3040 | { | |
3041 | if (nfs4_setup_sequence(NFS_SERVER(data->dir), | |
3042 | &data->args.seq_args, | |
3043 | &data->res.seq_res, | |
3044 | task)) | |
3045 | return; | |
3046 | rpc_call_start(task); | |
1da177e4 LT |
3047 | } |
3048 | ||
e4eff1a6 | 3049 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 3050 | { |
e4eff1a6 TM |
3051 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
3052 | ||
14516c3a TM |
3053 | if (!nfs4_sequence_done(task, &res->seq_res)) |
3054 | return 0; | |
9e33bed5 | 3055 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
3056 | return 0; |
3057 | update_changeattr(dir, &res->cinfo); | |
e4eff1a6 | 3058 | return 1; |
1da177e4 LT |
3059 | } |
3060 | ||
d3d4152a JL |
3061 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
3062 | { | |
3063 | struct nfs_server *server = NFS_SERVER(dir); | |
3064 | struct nfs_renameargs *arg = msg->rpc_argp; | |
3065 | struct nfs_renameres *res = msg->rpc_resp; | |
3066 | ||
3067 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
d3d4152a | 3068 | res->server = server; |
9d12b216 | 3069 | nfs41_init_sequence(&arg->seq_args, &res->seq_res, 1); |
d3d4152a JL |
3070 | } |
3071 | ||
c6bfa1a1 BS |
3072 | static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
3073 | { | |
3074 | if (nfs4_setup_sequence(NFS_SERVER(data->old_dir), | |
3075 | &data->args.seq_args, | |
3076 | &data->res.seq_res, | |
3077 | task)) | |
3078 | return; | |
3079 | rpc_call_start(task); | |
d3d4152a JL |
3080 | } |
3081 | ||
3082 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
3083 | struct inode *new_dir) | |
3084 | { | |
3085 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
3086 | ||
3087 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
3088 | return 0; | |
3089 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
3090 | return 0; | |
3091 | ||
3092 | update_changeattr(old_dir, &res->old_cinfo); | |
d3d4152a | 3093 | update_changeattr(new_dir, &res->new_cinfo); |
d3d4152a JL |
3094 | return 1; |
3095 | } | |
3096 | ||
1da177e4 LT |
3097 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
3098 | struct inode *new_dir, struct qstr *new_name) | |
3099 | { | |
6caf2c82 | 3100 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 3101 | struct nfs_renameargs arg = { |
1da177e4 LT |
3102 | .old_dir = NFS_FH(old_dir), |
3103 | .new_dir = NFS_FH(new_dir), | |
3104 | .old_name = old_name, | |
3105 | .new_name = new_name, | |
6caf2c82 | 3106 | }; |
e8582a8b | 3107 | struct nfs_renameres res = { |
6caf2c82 | 3108 | .server = server, |
1da177e4 | 3109 | }; |
1da177e4 LT |
3110 | struct rpc_message msg = { |
3111 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
3112 | .rpc_argp = &arg, | |
3113 | .rpc_resp = &res, | |
3114 | }; | |
011fff72 | 3115 | int status = -ENOMEM; |
1da177e4 | 3116 | |
7c513058 | 3117 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
3118 | if (!status) { |
3119 | update_changeattr(old_dir, &res.old_cinfo); | |
3120 | update_changeattr(new_dir, &res.new_cinfo); | |
3121 | } | |
3122 | return status; | |
3123 | } | |
3124 | ||
3125 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
3126 | struct inode *new_dir, struct qstr *new_name) | |
3127 | { | |
3128 | struct nfs4_exception exception = { }; | |
3129 | int err; | |
3130 | do { | |
3131 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
3132 | _nfs4_proc_rename(old_dir, old_name, | |
3133 | new_dir, new_name), | |
3134 | &exception); | |
3135 | } while (exception.retry); | |
3136 | return err; | |
3137 | } | |
3138 | ||
3139 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3140 | { | |
91ba2eee | 3141 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
3142 | struct nfs4_link_arg arg = { |
3143 | .fh = NFS_FH(inode), | |
3144 | .dir_fh = NFS_FH(dir), | |
3145 | .name = name, | |
91ba2eee TM |
3146 | .bitmask = server->attr_bitmask, |
3147 | }; | |
91ba2eee TM |
3148 | struct nfs4_link_res res = { |
3149 | .server = server, | |
1da177e4 | 3150 | }; |
1da177e4 LT |
3151 | struct rpc_message msg = { |
3152 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
3153 | .rpc_argp = &arg, | |
91ba2eee | 3154 | .rpc_resp = &res, |
1da177e4 | 3155 | }; |
136f2627 TM |
3156 | int status = -ENOMEM; |
3157 | ||
3158 | res.fattr = nfs_alloc_fattr(); | |
778d2817 | 3159 | if (res.fattr == NULL) |
136f2627 | 3160 | goto out; |
1da177e4 | 3161 | |
7c513058 | 3162 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
3163 | if (!status) { |
3164 | update_changeattr(dir, &res.cinfo); | |
73a3d07c | 3165 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 3166 | } |
136f2627 | 3167 | out: |
136f2627 | 3168 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
3169 | return status; |
3170 | } | |
3171 | ||
3172 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
3173 | { | |
3174 | struct nfs4_exception exception = { }; | |
3175 | int err; | |
3176 | do { | |
3177 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3178 | _nfs4_proc_link(inode, dir, name), | |
3179 | &exception); | |
3180 | } while (exception.retry); | |
3181 | return err; | |
3182 | } | |
3183 | ||
57dc9a57 TM |
3184 | struct nfs4_createdata { |
3185 | struct rpc_message msg; | |
3186 | struct nfs4_create_arg arg; | |
3187 | struct nfs4_create_res res; | |
3188 | struct nfs_fh fh; | |
3189 | struct nfs_fattr fattr; | |
57dc9a57 TM |
3190 | }; |
3191 | ||
3192 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
3193 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
3194 | { | |
3195 | struct nfs4_createdata *data; | |
3196 | ||
3197 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
3198 | if (data != NULL) { | |
3199 | struct nfs_server *server = NFS_SERVER(dir); | |
3200 | ||
3201 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
3202 | data->msg.rpc_argp = &data->arg; | |
3203 | data->msg.rpc_resp = &data->res; | |
3204 | data->arg.dir_fh = NFS_FH(dir); | |
3205 | data->arg.server = server; | |
3206 | data->arg.name = name; | |
3207 | data->arg.attrs = sattr; | |
3208 | data->arg.ftype = ftype; | |
3209 | data->arg.bitmask = server->attr_bitmask; | |
3210 | data->res.server = server; | |
3211 | data->res.fh = &data->fh; | |
3212 | data->res.fattr = &data->fattr; | |
57dc9a57 | 3213 | nfs_fattr_init(data->res.fattr); |
57dc9a57 TM |
3214 | } |
3215 | return data; | |
3216 | } | |
3217 | ||
3218 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
3219 | { | |
7c513058 | 3220 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 3221 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
3222 | if (status == 0) { |
3223 | update_changeattr(dir, &data->res.dir_cinfo); | |
57dc9a57 TM |
3224 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); |
3225 | } | |
3226 | return status; | |
3227 | } | |
3228 | ||
3229 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
3230 | { | |
3231 | kfree(data); | |
3232 | } | |
3233 | ||
4f390c15 | 3234 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3235 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 3236 | { |
57dc9a57 TM |
3237 | struct nfs4_createdata *data; |
3238 | int status = -ENAMETOOLONG; | |
1da177e4 | 3239 | |
94a6d753 | 3240 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 3241 | goto out; |
4f390c15 | 3242 | |
57dc9a57 TM |
3243 | status = -ENOMEM; |
3244 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
3245 | if (data == NULL) | |
3246 | goto out; | |
3247 | ||
3248 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
3249 | data->arg.u.symlink.pages = &page; | |
3250 | data->arg.u.symlink.len = len; | |
1da177e4 | 3251 | |
57dc9a57 TM |
3252 | status = nfs4_do_create(dir, dentry, data); |
3253 | ||
3254 | nfs4_free_createdata(data); | |
3255 | out: | |
1da177e4 LT |
3256 | return status; |
3257 | } | |
3258 | ||
4f390c15 | 3259 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 3260 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
3261 | { |
3262 | struct nfs4_exception exception = { }; | |
3263 | int err; | |
3264 | do { | |
3265 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
3266 | _nfs4_proc_symlink(dir, dentry, page, |
3267 | len, sattr), | |
1da177e4 LT |
3268 | &exception); |
3269 | } while (exception.retry); | |
3270 | return err; | |
3271 | } | |
3272 | ||
3273 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3274 | struct iattr *sattr) | |
3275 | { | |
57dc9a57 TM |
3276 | struct nfs4_createdata *data; |
3277 | int status = -ENOMEM; | |
1da177e4 | 3278 | |
57dc9a57 TM |
3279 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
3280 | if (data == NULL) | |
3281 | goto out; | |
3282 | ||
3283 | status = nfs4_do_create(dir, dentry, data); | |
3284 | ||
3285 | nfs4_free_createdata(data); | |
3286 | out: | |
1da177e4 LT |
3287 | return status; |
3288 | } | |
3289 | ||
3290 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
3291 | struct iattr *sattr) | |
3292 | { | |
3293 | struct nfs4_exception exception = { }; | |
3294 | int err; | |
a8a5da99 AK |
3295 | |
3296 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3297 | do { |
3298 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3299 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
3300 | &exception); | |
3301 | } while (exception.retry); | |
3302 | return err; | |
3303 | } | |
3304 | ||
3305 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3306 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3307 | { |
3308 | struct inode *dir = dentry->d_inode; | |
3309 | struct nfs4_readdir_arg args = { | |
3310 | .fh = NFS_FH(dir), | |
56e4ebf8 | 3311 | .pages = pages, |
1da177e4 LT |
3312 | .pgbase = 0, |
3313 | .count = count, | |
96d25e53 | 3314 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 3315 | .plus = plus, |
1da177e4 LT |
3316 | }; |
3317 | struct nfs4_readdir_res res; | |
3318 | struct rpc_message msg = { | |
3319 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
3320 | .rpc_argp = &args, | |
3321 | .rpc_resp = &res, | |
3322 | .rpc_cred = cred, | |
3323 | }; | |
3324 | int status; | |
3325 | ||
3110ff80 | 3326 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
3327 | dentry->d_parent->d_name.name, |
3328 | dentry->d_name.name, | |
3329 | (unsigned long long)cookie); | |
c3f52af3 | 3330 | nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args); |
1da177e4 | 3331 | res.pgbase = args.pgbase; |
7c513058 | 3332 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3333 | if (status >= 0) { |
c3f52af3 | 3334 | memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3335 | status += args.pgbase; |
3336 | } | |
c4812998 TM |
3337 | |
3338 | nfs_invalidate_atime(dir); | |
3339 | ||
3110ff80 | 3340 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3341 | return status; |
3342 | } | |
3343 | ||
3344 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3345 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3346 | { |
3347 | struct nfs4_exception exception = { }; | |
3348 | int err; | |
3349 | do { | |
3350 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3351 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3352 | pages, count, plus), |
1da177e4 LT |
3353 | &exception); |
3354 | } while (exception.retry); | |
3355 | return err; | |
3356 | } | |
3357 | ||
3358 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3359 | struct iattr *sattr, dev_t rdev) | |
3360 | { | |
57dc9a57 TM |
3361 | struct nfs4_createdata *data; |
3362 | int mode = sattr->ia_mode; | |
3363 | int status = -ENOMEM; | |
1da177e4 LT |
3364 | |
3365 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
3366 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
57dc9a57 TM |
3367 | |
3368 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); | |
3369 | if (data == NULL) | |
3370 | goto out; | |
3371 | ||
1da177e4 | 3372 | if (S_ISFIFO(mode)) |
57dc9a57 | 3373 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3374 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3375 | data->arg.ftype = NF4BLK; |
3376 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3377 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3378 | } |
3379 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3380 | data->arg.ftype = NF4CHR; |
3381 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3382 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 | 3383 | } |
1da177e4 | 3384 | |
57dc9a57 TM |
3385 | status = nfs4_do_create(dir, dentry, data); |
3386 | ||
3387 | nfs4_free_createdata(data); | |
3388 | out: | |
1da177e4 LT |
3389 | return status; |
3390 | } | |
3391 | ||
3392 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3393 | struct iattr *sattr, dev_t rdev) | |
3394 | { | |
3395 | struct nfs4_exception exception = { }; | |
3396 | int err; | |
a8a5da99 AK |
3397 | |
3398 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3399 | do { |
3400 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3401 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
3402 | &exception); | |
3403 | } while (exception.retry); | |
3404 | return err; | |
3405 | } | |
3406 | ||
3407 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3408 | struct nfs_fsstat *fsstat) | |
3409 | { | |
3410 | struct nfs4_statfs_arg args = { | |
3411 | .fh = fhandle, | |
3412 | .bitmask = server->attr_bitmask, | |
3413 | }; | |
24ad148a BH |
3414 | struct nfs4_statfs_res res = { |
3415 | .fsstat = fsstat, | |
3416 | }; | |
1da177e4 LT |
3417 | struct rpc_message msg = { |
3418 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3419 | .rpc_argp = &args, | |
24ad148a | 3420 | .rpc_resp = &res, |
1da177e4 LT |
3421 | }; |
3422 | ||
0e574af1 | 3423 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3424 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3425 | } |
3426 | ||
3427 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3428 | { | |
3429 | struct nfs4_exception exception = { }; | |
3430 | int err; | |
3431 | do { | |
3432 | err = nfs4_handle_exception(server, | |
3433 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3434 | &exception); | |
3435 | } while (exception.retry); | |
3436 | return err; | |
3437 | } | |
3438 | ||
3439 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3440 | struct nfs_fsinfo *fsinfo) | |
3441 | { | |
3442 | struct nfs4_fsinfo_arg args = { | |
3443 | .fh = fhandle, | |
3444 | .bitmask = server->attr_bitmask, | |
3445 | }; | |
3dda5e43 BH |
3446 | struct nfs4_fsinfo_res res = { |
3447 | .fsinfo = fsinfo, | |
3448 | }; | |
1da177e4 LT |
3449 | struct rpc_message msg = { |
3450 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3451 | .rpc_argp = &args, | |
3dda5e43 | 3452 | .rpc_resp = &res, |
1da177e4 LT |
3453 | }; |
3454 | ||
7c513058 | 3455 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3456 | } |
3457 | ||
3458 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3459 | { | |
3460 | struct nfs4_exception exception = { }; | |
3461 | int err; | |
3462 | ||
3463 | do { | |
3464 | err = nfs4_handle_exception(server, | |
3465 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
3466 | &exception); | |
3467 | } while (exception.retry); | |
3468 | return err; | |
3469 | } | |
3470 | ||
3471 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3472 | { | |
e38eb650 BS |
3473 | int error; |
3474 | ||
0e574af1 | 3475 | nfs_fattr_init(fsinfo->fattr); |
e38eb650 | 3476 | error = nfs4_do_fsinfo(server, fhandle, fsinfo); |
dc182549 PT |
3477 | if (error == 0) { |
3478 | /* block layout checks this! */ | |
3479 | server->pnfs_blksize = fsinfo->blksize; | |
e38eb650 | 3480 | set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); |
dc182549 | 3481 | } |
e38eb650 BS |
3482 | |
3483 | return error; | |
1da177e4 LT |
3484 | } |
3485 | ||
3486 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3487 | struct nfs_pathconf *pathconf) | |
3488 | { | |
3489 | struct nfs4_pathconf_arg args = { | |
3490 | .fh = fhandle, | |
3491 | .bitmask = server->attr_bitmask, | |
3492 | }; | |
d45b2989 BH |
3493 | struct nfs4_pathconf_res res = { |
3494 | .pathconf = pathconf, | |
3495 | }; | |
1da177e4 LT |
3496 | struct rpc_message msg = { |
3497 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3498 | .rpc_argp = &args, | |
d45b2989 | 3499 | .rpc_resp = &res, |
1da177e4 LT |
3500 | }; |
3501 | ||
3502 | /* None of the pathconf attributes are mandatory to implement */ | |
3503 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3504 | memset(pathconf, 0, sizeof(*pathconf)); | |
3505 | return 0; | |
3506 | } | |
3507 | ||
0e574af1 | 3508 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3509 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3510 | } |
3511 | ||
3512 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3513 | struct nfs_pathconf *pathconf) | |
3514 | { | |
3515 | struct nfs4_exception exception = { }; | |
3516 | int err; | |
3517 | ||
3518 | do { | |
3519 | err = nfs4_handle_exception(server, | |
3520 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3521 | &exception); | |
3522 | } while (exception.retry); | |
3523 | return err; | |
3524 | } | |
3525 | ||
d20581aa BH |
3526 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3527 | { | |
cd841605 | 3528 | nfs_invalidate_atime(data->header->inode); |
d20581aa BH |
3529 | } |
3530 | ||
cbdabc7f | 3531 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3532 | { |
cd841605 | 3533 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
1da177e4 | 3534 | |
9e33bed5 | 3535 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3536 | rpc_restart_call_prepare(task); |
ec06c096 | 3537 | return -EAGAIN; |
1da177e4 | 3538 | } |
8850df99 | 3539 | |
d20581aa | 3540 | __nfs4_read_done_cb(data); |
1da177e4 | 3541 | if (task->tk_status > 0) |
ec06c096 TM |
3542 | renew_lease(server, data->timestamp); |
3543 | return 0; | |
1da177e4 LT |
3544 | } |
3545 | ||
cbdabc7f AA |
3546 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3547 | { | |
3548 | ||
3549 | dprintk("--> %s\n", __func__); | |
3550 | ||
3551 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3552 | return -EAGAIN; | |
3553 | ||
d20581aa BH |
3554 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3555 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3556 | } |
3557 | ||
bdc7f021 | 3558 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3559 | { |
1da177e4 | 3560 | data->timestamp = jiffies; |
cbdabc7f | 3561 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3562 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
9d12b216 | 3563 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); |
1da177e4 LT |
3564 | } |
3565 | ||
ea7c3303 BS |
3566 | static void nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) |
3567 | { | |
cd841605 | 3568 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
ea7c3303 BS |
3569 | &data->args.seq_args, |
3570 | &data->res.seq_res, | |
3571 | task)) | |
3572 | return; | |
3573 | rpc_call_start(task); | |
1da177e4 LT |
3574 | } |
3575 | ||
b029bc9b | 3576 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3577 | { |
cd841605 | 3578 | struct inode *inode = data->header->inode; |
1da177e4 | 3579 | |
9e33bed5 | 3580 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
d00c5d43 | 3581 | rpc_restart_call_prepare(task); |
788e7a89 | 3582 | return -EAGAIN; |
1da177e4 | 3583 | } |
4f9838c7 | 3584 | if (task->tk_status >= 0) { |
1da177e4 | 3585 | renew_lease(NFS_SERVER(inode), data->timestamp); |
5a37f851 | 3586 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); |
4f9838c7 | 3587 | } |
788e7a89 | 3588 | return 0; |
1da177e4 LT |
3589 | } |
3590 | ||
b029bc9b FI |
3591 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3592 | { | |
3593 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3594 | return -EAGAIN; | |
d20581aa BH |
3595 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3596 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3597 | } |
3598 | ||
5a37f851 TM |
3599 | static |
3600 | bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data) | |
a69aef14 | 3601 | { |
5a37f851 TM |
3602 | const struct nfs_pgio_header *hdr = data->header; |
3603 | ||
3604 | /* Don't request attributes for pNFS or O_DIRECT writes */ | |
3605 | if (data->ds_clp != NULL || hdr->dreq != NULL) | |
3606 | return false; | |
3607 | /* Otherwise, request attributes if and only if we don't hold | |
3608 | * a delegation | |
3609 | */ | |
011e2a7f | 3610 | return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0; |
a69aef14 | 3611 | } |
a69aef14 | 3612 | |
bdc7f021 | 3613 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3614 | { |
cd841605 | 3615 | struct nfs_server *server = NFS_SERVER(data->header->inode); |
bdc7f021 | 3616 | |
5a37f851 | 3617 | if (!nfs4_write_need_cache_consistency_data(data)) { |
7ffd1064 FI |
3618 | data->args.bitmask = NULL; |
3619 | data->res.fattr = NULL; | |
3620 | } else | |
3621 | data->args.bitmask = server->cache_consistency_bitmask; | |
5a37f851 | 3622 | |
b029bc9b FI |
3623 | if (!data->write_done_cb) |
3624 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3625 | data->res.server = server; |
1da177e4 LT |
3626 | data->timestamp = jiffies; |
3627 | ||
bdc7f021 | 3628 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
9d12b216 | 3629 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3630 | } |
3631 | ||
c6cb80d0 BS |
3632 | static void nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) |
3633 | { | |
cd841605 | 3634 | if (nfs4_setup_sequence(NFS_SERVER(data->header->inode), |
c6cb80d0 BS |
3635 | &data->args.seq_args, |
3636 | &data->res.seq_res, | |
3637 | task)) | |
3638 | return; | |
3639 | rpc_call_start(task); | |
1da177e4 LT |
3640 | } |
3641 | ||
0b7c0153 | 3642 | static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
c6cb80d0 BS |
3643 | { |
3644 | if (nfs4_setup_sequence(NFS_SERVER(data->inode), | |
3645 | &data->args.seq_args, | |
3646 | &data->res.seq_res, | |
3647 | task)) | |
3648 | return; | |
3649 | rpc_call_start(task); | |
1da177e4 LT |
3650 | } |
3651 | ||
0b7c0153 | 3652 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data) |
1da177e4 | 3653 | { |
1da177e4 | 3654 | struct inode *inode = data->inode; |
14516c3a | 3655 | |
9e33bed5 | 3656 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
d00c5d43 | 3657 | rpc_restart_call_prepare(task); |
788e7a89 | 3658 | return -EAGAIN; |
1da177e4 | 3659 | } |
788e7a89 | 3660 | return 0; |
1da177e4 LT |
3661 | } |
3662 | ||
0b7c0153 | 3663 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data) |
5f452431 FI |
3664 | { |
3665 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3666 | return -EAGAIN; | |
0b7c0153 | 3667 | return data->commit_done_cb(task, data); |
5f452431 FI |
3668 | } |
3669 | ||
0b7c0153 | 3670 | static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 3671 | { |
788e7a89 | 3672 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce | 3673 | |
0b7c0153 FI |
3674 | if (data->commit_done_cb == NULL) |
3675 | data->commit_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 3676 | data->res.server = server; |
bdc7f021 | 3677 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
9d12b216 | 3678 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
1da177e4 LT |
3679 | } |
3680 | ||
9bc4e3ca CL |
3681 | struct nfs4_renewdata { |
3682 | struct nfs_client *client; | |
3683 | unsigned long timestamp; | |
3684 | }; | |
3685 | ||
1da177e4 LT |
3686 | /* |
3687 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3688 | * standalone procedure for queueing an asynchronous RENEW. | |
3689 | */ | |
9bc4e3ca | 3690 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3691 | { |
9bc4e3ca CL |
3692 | struct nfs4_renewdata *data = calldata; |
3693 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3694 | |
0851de06 AB |
3695 | if (atomic_read(&clp->cl_count) > 1) |
3696 | nfs4_schedule_state_renewal(clp); | |
3697 | nfs_put_client(clp); | |
9bc4e3ca | 3698 | kfree(data); |
dc96aef9 AB |
3699 | } |
3700 | ||
9bc4e3ca | 3701 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3702 | { |
9bc4e3ca CL |
3703 | struct nfs4_renewdata *data = calldata; |
3704 | struct nfs_client *clp = data->client; | |
3705 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3706 | |
3707 | if (task->tk_status < 0) { | |
95baa25c | 3708 | /* Unless we're shutting down, schedule state recovery! */ |
042b60be TM |
3709 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0) |
3710 | return; | |
3711 | if (task->tk_status != NFS4ERR_CB_PATH_DOWN) { | |
0400a6b0 | 3712 | nfs4_schedule_lease_recovery(clp); |
042b60be TM |
3713 | return; |
3714 | } | |
3715 | nfs4_schedule_path_down_recovery(clp); | |
1da177e4 | 3716 | } |
452e9352 | 3717 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3718 | } |
3719 | ||
963d8fe5 TM |
3720 | static const struct rpc_call_ops nfs4_renew_ops = { |
3721 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3722 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3723 | }; |
3724 | ||
2f60ea6b | 3725 | static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
1da177e4 LT |
3726 | { |
3727 | struct rpc_message msg = { | |
3728 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3729 | .rpc_argp = clp, | |
b4454fe1 | 3730 | .rpc_cred = cred, |
1da177e4 | 3731 | }; |
9bc4e3ca | 3732 | struct nfs4_renewdata *data; |
1da177e4 | 3733 | |
2f60ea6b TM |
3734 | if (renew_flags == 0) |
3735 | return 0; | |
0851de06 AB |
3736 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3737 | return -EIO; | |
b569ad34 | 3738 | data = kmalloc(sizeof(*data), GFP_NOFS); |
9bc4e3ca CL |
3739 | if (data == NULL) |
3740 | return -ENOMEM; | |
3741 | data->client = clp; | |
3742 | data->timestamp = jiffies; | |
1da177e4 | 3743 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3744 | &nfs4_renew_ops, data); |
1da177e4 LT |
3745 | } |
3746 | ||
8534d4ec | 3747 | static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3748 | { |
3749 | struct rpc_message msg = { | |
3750 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3751 | .rpc_argp = clp, | |
b4454fe1 | 3752 | .rpc_cred = cred, |
1da177e4 LT |
3753 | }; |
3754 | unsigned long now = jiffies; | |
3755 | int status; | |
3756 | ||
3757 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3758 | if (status < 0) | |
3759 | return status; | |
452e9352 | 3760 | do_renew_lease(clp, now); |
1da177e4 LT |
3761 | return 0; |
3762 | } | |
3763 | ||
aa1870af BF |
3764 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3765 | { | |
3766 | return (server->caps & NFS_CAP_ACLS) | |
3767 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3768 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3769 | } | |
3770 | ||
21f498c2 TM |
3771 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that |
3772 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on | |
aa1870af BF |
3773 | * the stack. |
3774 | */ | |
21f498c2 | 3775 | #define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) |
aa1870af | 3776 | |
e9e3d724 NH |
3777 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3778 | struct page **pages, unsigned int *pgbase) | |
3779 | { | |
3780 | struct page *newpage, **spages; | |
3781 | int rc = 0; | |
3782 | size_t len; | |
3783 | spages = pages; | |
3784 | ||
3785 | do { | |
21f498c2 | 3786 | len = min_t(size_t, PAGE_SIZE, buflen); |
e9e3d724 NH |
3787 | newpage = alloc_page(GFP_KERNEL); |
3788 | ||
3789 | if (newpage == NULL) | |
3790 | goto unwind; | |
3791 | memcpy(page_address(newpage), buf, len); | |
3792 | buf += len; | |
3793 | buflen -= len; | |
3794 | *pages++ = newpage; | |
3795 | rc++; | |
3796 | } while (buflen != 0); | |
3797 | ||
3798 | return rc; | |
3799 | ||
3800 | unwind: | |
3801 | for(; rc > 0; rc--) | |
3802 | __free_page(spages[rc-1]); | |
3803 | return -ENOMEM; | |
3804 | } | |
3805 | ||
e50a1c2e BF |
3806 | struct nfs4_cached_acl { |
3807 | int cached; | |
3808 | size_t len; | |
3e9d4154 | 3809 | char data[0]; |
e50a1c2e BF |
3810 | }; |
3811 | ||
3812 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3813 | { | |
3814 | struct nfs_inode *nfsi = NFS_I(inode); | |
3815 | ||
3816 | spin_lock(&inode->i_lock); | |
3817 | kfree(nfsi->nfs4_acl); | |
3818 | nfsi->nfs4_acl = acl; | |
3819 | spin_unlock(&inode->i_lock); | |
3820 | } | |
3821 | ||
3822 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3823 | { | |
3824 | nfs4_set_cached_acl(inode, NULL); | |
3825 | } | |
3826 | ||
3827 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3828 | { | |
3829 | struct nfs_inode *nfsi = NFS_I(inode); | |
3830 | struct nfs4_cached_acl *acl; | |
3831 | int ret = -ENOENT; | |
3832 | ||
3833 | spin_lock(&inode->i_lock); | |
3834 | acl = nfsi->nfs4_acl; | |
3835 | if (acl == NULL) | |
3836 | goto out; | |
3837 | if (buf == NULL) /* user is just asking for length */ | |
3838 | goto out_len; | |
3839 | if (acl->cached == 0) | |
3840 | goto out; | |
3841 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3842 | if (acl->len > buflen) | |
3843 | goto out; | |
3844 | memcpy(buf, acl->data, acl->len); | |
3845 | out_len: | |
3846 | ret = acl->len; | |
3847 | out: | |
3848 | spin_unlock(&inode->i_lock); | |
3849 | return ret; | |
3850 | } | |
3851 | ||
5794d21e | 3852 | static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) |
e50a1c2e BF |
3853 | { |
3854 | struct nfs4_cached_acl *acl; | |
b291f1b1 | 3855 | size_t buflen = sizeof(*acl) + acl_len; |
e50a1c2e | 3856 | |
1f1ea6c2 | 3857 | if (buflen <= PAGE_SIZE) { |
b291f1b1 | 3858 | acl = kmalloc(buflen, GFP_KERNEL); |
e50a1c2e BF |
3859 | if (acl == NULL) |
3860 | goto out; | |
3861 | acl->cached = 1; | |
5794d21e | 3862 | _copy_from_pages(acl->data, pages, pgbase, acl_len); |
e50a1c2e BF |
3863 | } else { |
3864 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3865 | if (acl == NULL) | |
3866 | goto out; | |
3867 | acl->cached = 0; | |
3868 | } | |
3869 | acl->len = acl_len; | |
3870 | out: | |
3871 | nfs4_set_cached_acl(inode, acl); | |
3872 | } | |
3873 | ||
bf118a34 AA |
3874 | /* |
3875 | * The getxattr API returns the required buffer length when called with a | |
3876 | * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating | |
3877 | * the required buf. On a NULL buf, we send a page of data to the server | |
3878 | * guessing that the ACL request can be serviced by a page. If so, we cache | |
3879 | * up to the page of ACL data, and the 2nd call to getxattr is serviced by | |
3880 | * the cache. If not so, we throw away the page, and cache the required | |
3881 | * length. The next getxattr call will then produce another round trip to | |
3882 | * the server, this time with the input buf of the required size. | |
3883 | */ | |
16b4289c | 3884 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3885 | { |
bf118a34 | 3886 | struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; |
aa1870af BF |
3887 | struct nfs_getaclargs args = { |
3888 | .fh = NFS_FH(inode), | |
3889 | .acl_pages = pages, | |
3890 | .acl_len = buflen, | |
3891 | }; | |
663c79b3 BH |
3892 | struct nfs_getaclres res = { |
3893 | .acl_len = buflen, | |
3894 | }; | |
aa1870af BF |
3895 | struct rpc_message msg = { |
3896 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3897 | .rpc_argp = &args, | |
663c79b3 | 3898 | .rpc_resp = &res, |
aa1870af | 3899 | }; |
21f498c2 TM |
3900 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
3901 | int ret = -ENOMEM, i; | |
aa1870af | 3902 | |
bf118a34 AA |
3903 | /* As long as we're doing a round trip to the server anyway, |
3904 | * let's be prepared for a page of acl data. */ | |
3905 | if (npages == 0) | |
3906 | npages = 1; | |
21f498c2 TM |
3907 | if (npages > ARRAY_SIZE(pages)) |
3908 | return -ERANGE; | |
5a006899 | 3909 | |
bf118a34 AA |
3910 | for (i = 0; i < npages; i++) { |
3911 | pages[i] = alloc_page(GFP_KERNEL); | |
3912 | if (!pages[i]) | |
3913 | goto out_free; | |
e50a1c2e | 3914 | } |
5a006899 SP |
3915 | |
3916 | /* for decoding across pages */ | |
3917 | res.acl_scratch = alloc_page(GFP_KERNEL); | |
3918 | if (!res.acl_scratch) | |
3919 | goto out_free; | |
3920 | ||
bf118a34 AA |
3921 | args.acl_len = npages * PAGE_SIZE; |
3922 | args.acl_pgbase = 0; | |
5a006899 | 3923 | |
de040bec | 3924 | dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", |
bf118a34 AA |
3925 | __func__, buf, buflen, npages, args.acl_len); |
3926 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), | |
3927 | &msg, &args.seq_args, &res.seq_res, 0); | |
e50a1c2e BF |
3928 | if (ret) |
3929 | goto out_free; | |
bf118a34 | 3930 | |
1f1ea6c2 TM |
3931 | /* Handle the case where the passed-in buffer is too short */ |
3932 | if (res.acl_flags & NFS4_ACL_TRUNC) { | |
3933 | /* Did the user only issue a request for the acl length? */ | |
3934 | if (buf == NULL) | |
3935 | goto out_ok; | |
e50a1c2e | 3936 | ret = -ERANGE; |
1f1ea6c2 | 3937 | goto out_free; |
e50a1c2e | 3938 | } |
1f1ea6c2 TM |
3939 | nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len); |
3940 | if (buf) | |
3941 | _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len); | |
3942 | out_ok: | |
3943 | ret = res.acl_len; | |
e50a1c2e | 3944 | out_free: |
bf118a34 AA |
3945 | for (i = 0; i < npages; i++) |
3946 | if (pages[i]) | |
3947 | __free_page(pages[i]); | |
331818f1 TM |
3948 | if (res.acl_scratch) |
3949 | __free_page(res.acl_scratch); | |
aa1870af BF |
3950 | return ret; |
3951 | } | |
3952 | ||
16b4289c TM |
3953 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3954 | { | |
3955 | struct nfs4_exception exception = { }; | |
3956 | ssize_t ret; | |
3957 | do { | |
3958 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3959 | if (ret >= 0) | |
3960 | break; | |
3961 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3962 | } while (exception.retry); | |
3963 | return ret; | |
3964 | } | |
3965 | ||
e50a1c2e BF |
3966 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3967 | { | |
3968 | struct nfs_server *server = NFS_SERVER(inode); | |
3969 | int ret; | |
3970 | ||
3971 | if (!nfs4_server_supports_acls(server)) | |
3972 | return -EOPNOTSUPP; | |
3973 | ret = nfs_revalidate_inode(server, inode); | |
3974 | if (ret < 0) | |
3975 | return ret; | |
08a22b39 AK |
3976 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
3977 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
3978 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
3979 | if (ret != -ENOENT) | |
bf118a34 AA |
3980 | /* -ENOENT is returned if there is no ACL or if there is an ACL |
3981 | * but no cached acl data, just the acl length */ | |
e50a1c2e BF |
3982 | return ret; |
3983 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3984 | } | |
3985 | ||
16b4289c | 3986 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3987 | { |
3988 | struct nfs_server *server = NFS_SERVER(inode); | |
3989 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3990 | struct nfs_setaclargs arg = { | |
3991 | .fh = NFS_FH(inode), | |
3992 | .acl_pages = pages, | |
3993 | .acl_len = buflen, | |
3994 | }; | |
73c403a9 | 3995 | struct nfs_setaclres res; |
4b580ee3 BF |
3996 | struct rpc_message msg = { |
3997 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3998 | .rpc_argp = &arg, | |
73c403a9 | 3999 | .rpc_resp = &res, |
4b580ee3 | 4000 | }; |
21f498c2 | 4001 | unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); |
e9e3d724 | 4002 | int ret, i; |
4b580ee3 BF |
4003 | |
4004 | if (!nfs4_server_supports_acls(server)) | |
4005 | return -EOPNOTSUPP; | |
21f498c2 TM |
4006 | if (npages > ARRAY_SIZE(pages)) |
4007 | return -ERANGE; | |
e9e3d724 NH |
4008 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
4009 | if (i < 0) | |
4010 | return i; | |
57ec14c5 | 4011 | nfs4_inode_return_delegation(inode); |
7c513058 | 4012 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
4013 | |
4014 | /* | |
4015 | * Free each page after tx, so the only ref left is | |
4016 | * held by the network stack | |
4017 | */ | |
4018 | for (; i > 0; i--) | |
4019 | put_page(pages[i-1]); | |
4020 | ||
08a22b39 AK |
4021 | /* |
4022 | * Acl update can result in inode attribute update. | |
4023 | * so mark the attribute cache invalid. | |
4024 | */ | |
4025 | spin_lock(&inode->i_lock); | |
4026 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
4027 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
4028 | nfs_access_zap_cache(inode); |
4029 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
4030 | return ret; |
4031 | } | |
4032 | ||
16b4289c TM |
4033 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4034 | { | |
4035 | struct nfs4_exception exception = { }; | |
4036 | int err; | |
4037 | do { | |
4038 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
4039 | __nfs4_proc_set_acl(inode, buf, buflen), | |
4040 | &exception); | |
4041 | } while (exception.retry); | |
4042 | return err; | |
4043 | } | |
4044 | ||
1da177e4 | 4045 | static int |
aa5190d0 | 4046 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 4047 | { |
aa5190d0 TM |
4048 | struct nfs_client *clp = server->nfs_client; |
4049 | ||
4050 | if (task->tk_status >= 0) | |
1da177e4 LT |
4051 | return 0; |
4052 | switch(task->tk_status) { | |
a1d0b5ee | 4053 | case -NFS4ERR_DELEG_REVOKED: |
9e33bed5 TM |
4054 | case -NFS4ERR_ADMIN_REVOKED: |
4055 | case -NFS4ERR_BAD_STATEID: | |
14977489 TM |
4056 | if (state == NULL) |
4057 | break; | |
4058 | nfs_remove_bad_delegation(state->inode); | |
9e33bed5 TM |
4059 | case -NFS4ERR_OPENMODE: |
4060 | if (state == NULL) | |
4061 | break; | |
0400a6b0 TM |
4062 | nfs4_schedule_stateid_recovery(server, state); |
4063 | goto wait_on_recovery; | |
0ced63d1 TM |
4064 | case -NFS4ERR_EXPIRED: |
4065 | if (state != NULL) | |
4066 | nfs4_schedule_stateid_recovery(server, state); | |
1da177e4 | 4067 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 4068 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
4069 | nfs4_schedule_lease_recovery(clp); |
4070 | goto wait_on_recovery; | |
4745e315 AA |
4071 | #if defined(CONFIG_NFS_V4_1) |
4072 | case -NFS4ERR_BADSESSION: | |
4073 | case -NFS4ERR_BADSLOT: | |
4074 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4075 | case -NFS4ERR_DEADSESSION: | |
4076 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4077 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
4078 | case -NFS4ERR_SEQ_MISORDERED: | |
4079 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
4080 | task->tk_status); | |
9f594791 | 4081 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); |
4745e315 AA |
4082 | task->tk_status = 0; |
4083 | return -EAGAIN; | |
4084 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 4085 | case -NFS4ERR_DELAY: |
aa5190d0 | 4086 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 4087 | case -NFS4ERR_GRACE: |
2c643488 | 4088 | case -EKEYEXPIRED: |
1da177e4 LT |
4089 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
4090 | task->tk_status = 0; | |
4091 | return -EAGAIN; | |
a8a4ae3a | 4092 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
4093 | case -NFS4ERR_OLD_STATEID: |
4094 | task->tk_status = 0; | |
4095 | return -EAGAIN; | |
4096 | } | |
4097 | task->tk_status = nfs4_map_errors(task->tk_status); | |
4098 | return 0; | |
0400a6b0 | 4099 | wait_on_recovery: |
a2c0b9e2 | 4100 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
4101 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
4102 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
4103 | task->tk_status = 0; | |
4104 | return -EAGAIN; | |
1da177e4 LT |
4105 | } |
4106 | ||
f092075d CL |
4107 | static void nfs4_init_boot_verifier(const struct nfs_client *clp, |
4108 | nfs4_verifier *bootverf) | |
cd93710e CL |
4109 | { |
4110 | __be32 verf[2]; | |
4111 | ||
2c820d9a CL |
4112 | if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { |
4113 | /* An impossible timestamp guarantees this value | |
4114 | * will never match a generated boot time. */ | |
4115 | verf[0] = 0; | |
4116 | verf[1] = (__be32)(NSEC_PER_SEC + 1); | |
4117 | } else { | |
f092075d CL |
4118 | struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); |
4119 | verf[0] = (__be32)nn->boot_time.tv_sec; | |
4120 | verf[1] = (__be32)nn->boot_time.tv_nsec; | |
2c820d9a | 4121 | } |
cd93710e CL |
4122 | memcpy(bootverf->data, verf, sizeof(bootverf->data)); |
4123 | } | |
4124 | ||
e984a55a CL |
4125 | static unsigned int |
4126 | nfs4_init_nonuniform_client_string(const struct nfs_client *clp, | |
4127 | char *buf, size_t len) | |
4128 | { | |
4129 | unsigned int result; | |
4130 | ||
4131 | rcu_read_lock(); | |
4132 | result = scnprintf(buf, len, "Linux NFSv4.0 %s/%s %s", | |
4133 | clp->cl_ipaddr, | |
4134 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4135 | RPC_DISPLAY_ADDR), | |
4136 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4137 | RPC_DISPLAY_PROTO)); | |
4138 | rcu_read_unlock(); | |
4139 | return result; | |
4140 | } | |
4141 | ||
4142 | static unsigned int | |
4143 | nfs4_init_uniform_client_string(const struct nfs_client *clp, | |
4144 | char *buf, size_t len) | |
4145 | { | |
6f2ea7f2 CL |
4146 | char *nodename = clp->cl_rpcclient->cl_nodename; |
4147 | ||
4148 | if (nfs4_client_id_uniquifier[0] != '\0') | |
4149 | nodename = nfs4_client_id_uniquifier; | |
e984a55a CL |
4150 | return scnprintf(buf, len, "Linux NFSv%u.%u %s", |
4151 | clp->rpc_ops->version, clp->cl_minorversion, | |
6f2ea7f2 | 4152 | nodename); |
e984a55a CL |
4153 | } |
4154 | ||
6bbb4ae8 CL |
4155 | /** |
4156 | * nfs4_proc_setclientid - Negotiate client ID | |
4157 | * @clp: state data structure | |
4158 | * @program: RPC program for NFSv4 callback service | |
4159 | * @port: IP port number for NFS4 callback service | |
4160 | * @cred: RPC credential to use for this call | |
4161 | * @res: where to place the result | |
4162 | * | |
4163 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4164 | */ | |
bb8b27e5 TM |
4165 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
4166 | unsigned short port, struct rpc_cred *cred, | |
4167 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
4168 | { |
4169 | nfs4_verifier sc_verifier; | |
4170 | struct nfs4_setclientid setclientid = { | |
4171 | .sc_verifier = &sc_verifier, | |
4172 | .sc_prog = program, | |
f4eecd5d | 4173 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
4174 | }; |
4175 | struct rpc_message msg = { | |
4176 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
4177 | .rpc_argp = &setclientid, | |
bb8b27e5 | 4178 | .rpc_resp = res, |
286d7d6a | 4179 | .rpc_cred = cred, |
1da177e4 | 4180 | }; |
6bbb4ae8 | 4181 | int status; |
1da177e4 | 4182 | |
de734831 | 4183 | /* nfs_client_id4 */ |
f092075d | 4184 | nfs4_init_boot_verifier(clp, &sc_verifier); |
e984a55a CL |
4185 | if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags)) |
4186 | setclientid.sc_name_len = | |
4187 | nfs4_init_uniform_client_string(clp, | |
4188 | setclientid.sc_name, | |
4189 | sizeof(setclientid.sc_name)); | |
4190 | else | |
4191 | setclientid.sc_name_len = | |
4192 | nfs4_init_nonuniform_client_string(clp, | |
4193 | setclientid.sc_name, | |
4194 | sizeof(setclientid.sc_name)); | |
de734831 | 4195 | /* cb_client4 */ |
e984a55a | 4196 | rcu_read_lock(); |
de734831 | 4197 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, |
d4d3c507 CL |
4198 | sizeof(setclientid.sc_netid), |
4199 | rpc_peeraddr2str(clp->cl_rpcclient, | |
4200 | RPC_DISPLAY_NETID)); | |
de734831 CL |
4201 | rcu_read_unlock(); |
4202 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, | |
d4d3c507 | 4203 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
4204 | clp->cl_ipaddr, port >> 8, port & 255); |
4205 | ||
6bbb4ae8 CL |
4206 | dprintk("NFS call setclientid auth=%s, '%.*s'\n", |
4207 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4208 | setclientid.sc_name_len, setclientid.sc_name); | |
4209 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
4210 | dprintk("NFS reply setclientid: %d\n", status); | |
4211 | return status; | |
1da177e4 LT |
4212 | } |
4213 | ||
6bbb4ae8 CL |
4214 | /** |
4215 | * nfs4_proc_setclientid_confirm - Confirm client ID | |
4216 | * @clp: state data structure | |
4217 | * @res: result of a previous SETCLIENTID | |
4218 | * @cred: RPC credential to use for this call | |
4219 | * | |
4220 | * Returns zero, a negative errno, or a negative NFS4ERR status code. | |
4221 | */ | |
fd954ae1 | 4222 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
4223 | struct nfs4_setclientid_res *arg, |
4224 | struct rpc_cred *cred) | |
1da177e4 LT |
4225 | { |
4226 | struct nfs_fsinfo fsinfo; | |
4227 | struct rpc_message msg = { | |
4228 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 4229 | .rpc_argp = arg, |
1da177e4 | 4230 | .rpc_resp = &fsinfo, |
286d7d6a | 4231 | .rpc_cred = cred, |
1da177e4 LT |
4232 | }; |
4233 | unsigned long now; | |
4234 | int status; | |
4235 | ||
6bbb4ae8 CL |
4236 | dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", |
4237 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
4238 | clp->cl_clientid); | |
1da177e4 | 4239 | now = jiffies; |
1bd714f2 | 4240 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
4241 | if (status == 0) { |
4242 | spin_lock(&clp->cl_lock); | |
4243 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
4244 | clp->cl_last_renewal = now; | |
4245 | spin_unlock(&clp->cl_lock); | |
4246 | } | |
6bbb4ae8 | 4247 | dprintk("NFS reply setclientid_confirm: %d\n", status); |
1da177e4 LT |
4248 | return status; |
4249 | } | |
4250 | ||
fe650407 TM |
4251 | struct nfs4_delegreturndata { |
4252 | struct nfs4_delegreturnargs args; | |
fa178f29 | 4253 | struct nfs4_delegreturnres res; |
fe650407 TM |
4254 | struct nfs_fh fh; |
4255 | nfs4_stateid stateid; | |
26e976a8 | 4256 | unsigned long timestamp; |
fa178f29 | 4257 | struct nfs_fattr fattr; |
fe650407 TM |
4258 | int rpc_status; |
4259 | }; | |
4260 | ||
fe650407 TM |
4261 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
4262 | { | |
4263 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 4264 | |
14516c3a TM |
4265 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4266 | return; | |
938e1010 | 4267 | |
79708861 RL |
4268 | switch (task->tk_status) { |
4269 | case -NFS4ERR_STALE_STATEID: | |
4270 | case -NFS4ERR_EXPIRED: | |
4271 | case 0: | |
fa178f29 | 4272 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
4273 | break; |
4274 | default: | |
4275 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
4276 | -EAGAIN) { | |
d00c5d43 | 4277 | rpc_restart_call_prepare(task); |
79708861 RL |
4278 | return; |
4279 | } | |
4280 | } | |
4281 | data->rpc_status = task->tk_status; | |
fe650407 TM |
4282 | } |
4283 | ||
4284 | static void nfs4_delegreturn_release(void *calldata) | |
4285 | { | |
fe650407 TM |
4286 | kfree(calldata); |
4287 | } | |
4288 | ||
938e1010 AA |
4289 | #if defined(CONFIG_NFS_V4_1) |
4290 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
4291 | { | |
4292 | struct nfs4_delegreturndata *d_data; | |
4293 | ||
4294 | d_data = (struct nfs4_delegreturndata *)data; | |
4295 | ||
035168ab | 4296 | if (nfs4_setup_sequence(d_data->res.server, |
938e1010 | 4297 | &d_data->args.seq_args, |
9d12b216 | 4298 | &d_data->res.seq_res, task)) |
938e1010 AA |
4299 | return; |
4300 | rpc_call_start(task); | |
4301 | } | |
4302 | #endif /* CONFIG_NFS_V4_1 */ | |
4303 | ||
c8d149f3 | 4304 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
4305 | #if defined(CONFIG_NFS_V4_1) |
4306 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
4307 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
4308 | .rpc_call_done = nfs4_delegreturn_done, |
4309 | .rpc_release = nfs4_delegreturn_release, | |
4310 | }; | |
4311 | ||
e6f81075 | 4312 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
4313 | { |
4314 | struct nfs4_delegreturndata *data; | |
fa178f29 | 4315 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 4316 | struct rpc_task *task; |
5138fde0 TM |
4317 | struct rpc_message msg = { |
4318 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
4319 | .rpc_cred = cred, | |
4320 | }; | |
c970aa85 TM |
4321 | struct rpc_task_setup task_setup_data = { |
4322 | .rpc_client = server->client, | |
5138fde0 | 4323 | .rpc_message = &msg, |
c970aa85 TM |
4324 | .callback_ops = &nfs4_delegreturn_ops, |
4325 | .flags = RPC_TASK_ASYNC, | |
4326 | }; | |
e6f81075 | 4327 | int status = 0; |
fe650407 | 4328 | |
8535b2be | 4329 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
4330 | if (data == NULL) |
4331 | return -ENOMEM; | |
9d12b216 | 4332 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
fe650407 TM |
4333 | data->args.fhandle = &data->fh; |
4334 | data->args.stateid = &data->stateid; | |
9e907fec | 4335 | data->args.bitmask = server->cache_consistency_bitmask; |
fe650407 | 4336 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
f597c537 | 4337 | nfs4_stateid_copy(&data->stateid, stateid); |
fa178f29 TM |
4338 | data->res.fattr = &data->fattr; |
4339 | data->res.server = server; | |
5138fde0 | 4340 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 4341 | data->timestamp = jiffies; |
fe650407 TM |
4342 | data->rpc_status = 0; |
4343 | ||
c970aa85 | 4344 | task_setup_data.callback_data = data; |
1174dd1f TM |
4345 | msg.rpc_argp = &data->args; |
4346 | msg.rpc_resp = &data->res; | |
c970aa85 | 4347 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 4348 | if (IS_ERR(task)) |
fe650407 | 4349 | return PTR_ERR(task); |
e6f81075 TM |
4350 | if (!issync) |
4351 | goto out; | |
fe650407 | 4352 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
4353 | if (status != 0) |
4354 | goto out; | |
4355 | status = data->rpc_status; | |
e144cbcc TM |
4356 | if (status == 0) |
4357 | nfs_post_op_update_inode_force_wcc(inode, &data->fattr); | |
4358 | else | |
4359 | nfs_refresh_inode(inode, &data->fattr); | |
e6f81075 | 4360 | out: |
e6b3c4db | 4361 | rpc_put_task(task); |
fe650407 | 4362 | return status; |
1da177e4 LT |
4363 | } |
4364 | ||
e6f81075 | 4365 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
4366 | { |
4367 | struct nfs_server *server = NFS_SERVER(inode); | |
4368 | struct nfs4_exception exception = { }; | |
4369 | int err; | |
4370 | do { | |
e6f81075 | 4371 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
4372 | switch (err) { |
4373 | case -NFS4ERR_STALE_STATEID: | |
4374 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
4375 | case 0: |
4376 | return 0; | |
4377 | } | |
4378 | err = nfs4_handle_exception(server, err, &exception); | |
4379 | } while (exception.retry); | |
4380 | return err; | |
4381 | } | |
4382 | ||
4383 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
4384 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
4385 | ||
4386 | /* | |
4387 | * sleep, with exponential backoff, and retry the LOCK operation. | |
4388 | */ | |
4389 | static unsigned long | |
4390 | nfs4_set_lock_task_retry(unsigned long timeout) | |
4391 | { | |
d310310c | 4392 | freezable_schedule_timeout_killable(timeout); |
1da177e4 LT |
4393 | timeout <<= 1; |
4394 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
4395 | return NFS4_LOCK_MAXTIMEOUT; | |
4396 | return timeout; | |
4397 | } | |
4398 | ||
1da177e4 LT |
4399 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4400 | { | |
4401 | struct inode *inode = state->inode; | |
4402 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 4403 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 4404 | struct nfs_lockt_args arg = { |
1da177e4 | 4405 | .fh = NFS_FH(inode), |
911d1aaf | 4406 | .fl = request, |
1da177e4 | 4407 | }; |
911d1aaf TM |
4408 | struct nfs_lockt_res res = { |
4409 | .denied = request, | |
1da177e4 LT |
4410 | }; |
4411 | struct rpc_message msg = { | |
4412 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
4413 | .rpc_argp = &arg, | |
4414 | .rpc_resp = &res, | |
4415 | .rpc_cred = state->owner->so_cred, | |
4416 | }; | |
1da177e4 LT |
4417 | struct nfs4_lock_state *lsp; |
4418 | int status; | |
4419 | ||
911d1aaf | 4420 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
4421 | status = nfs4_set_lock_state(state, request); |
4422 | if (status != 0) | |
4423 | goto out; | |
4424 | lsp = request->fl_u.nfs4_fl.owner; | |
48c22eb2 | 4425 | arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4426 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 4427 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
4428 | switch (status) { |
4429 | case 0: | |
4430 | request->fl_type = F_UNLCK; | |
4431 | break; | |
4432 | case -NFS4ERR_DENIED: | |
4433 | status = 0; | |
1da177e4 | 4434 | } |
70cc6487 | 4435 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 4436 | out: |
1da177e4 LT |
4437 | return status; |
4438 | } | |
4439 | ||
4440 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4441 | { | |
4442 | struct nfs4_exception exception = { }; | |
4443 | int err; | |
4444 | ||
4445 | do { | |
4446 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
4447 | _nfs4_proc_getlk(state, cmd, request), | |
4448 | &exception); | |
4449 | } while (exception.retry); | |
4450 | return err; | |
4451 | } | |
4452 | ||
4453 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4454 | { | |
4455 | int res = 0; | |
4456 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4457 | case FL_POSIX: | |
4458 | res = posix_lock_file_wait(file, fl); | |
4459 | break; | |
4460 | case FL_FLOCK: | |
4461 | res = flock_lock_file_wait(file, fl); | |
4462 | break; | |
4463 | default: | |
4464 | BUG(); | |
4465 | } | |
1da177e4 LT |
4466 | return res; |
4467 | } | |
4468 | ||
faf5f49c | 4469 | struct nfs4_unlockdata { |
911d1aaf TM |
4470 | struct nfs_locku_args arg; |
4471 | struct nfs_locku_res res; | |
faf5f49c TM |
4472 | struct nfs4_lock_state *lsp; |
4473 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4474 | struct file_lock fl; |
4475 | const struct nfs_server *server; | |
26e976a8 | 4476 | unsigned long timestamp; |
faf5f49c TM |
4477 | }; |
4478 | ||
911d1aaf TM |
4479 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
4480 | struct nfs_open_context *ctx, | |
4481 | struct nfs4_lock_state *lsp, | |
4482 | struct nfs_seqid *seqid) | |
4483 | { | |
4484 | struct nfs4_unlockdata *p; | |
4485 | struct inode *inode = lsp->ls_state->inode; | |
4486 | ||
8535b2be | 4487 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
4488 | if (p == NULL) |
4489 | return NULL; | |
4490 | p->arg.fh = NFS_FH(inode); | |
4491 | p->arg.fl = &p->fl; | |
4492 | p->arg.seqid = seqid; | |
c1d51931 | 4493 | p->res.seqid = seqid; |
911d1aaf TM |
4494 | p->arg.stateid = &lsp->ls_stateid; |
4495 | p->lsp = lsp; | |
4496 | atomic_inc(&lsp->ls_count); | |
4497 | /* Ensure we don't close file until we're done freeing locks! */ | |
4498 | p->ctx = get_nfs_open_context(ctx); | |
4499 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4500 | p->server = NFS_SERVER(inode); | |
4501 | return p; | |
4502 | } | |
4503 | ||
06f814a3 | 4504 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 4505 | { |
963d8fe5 | 4506 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 4507 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
4508 | nfs4_put_lock_state(calldata->lsp); |
4509 | put_nfs_open_context(calldata->ctx); | |
4510 | kfree(calldata); | |
faf5f49c TM |
4511 | } |
4512 | ||
963d8fe5 | 4513 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 4514 | { |
963d8fe5 | 4515 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4516 | |
14516c3a TM |
4517 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
4518 | return; | |
faf5f49c TM |
4519 | switch (task->tk_status) { |
4520 | case 0: | |
f597c537 TM |
4521 | nfs4_stateid_copy(&calldata->lsp->ls_stateid, |
4522 | &calldata->res.stateid); | |
26e976a8 | 4523 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 4524 | break; |
9e33bed5 TM |
4525 | case -NFS4ERR_BAD_STATEID: |
4526 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4527 | case -NFS4ERR_STALE_STATEID: |
4528 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4529 | break; |
4530 | default: | |
9e33bed5 | 4531 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
d00c5d43 | 4532 | rpc_restart_call_prepare(task); |
faf5f49c | 4533 | } |
2b1bc308 | 4534 | nfs_release_seqid(calldata->arg.seqid); |
faf5f49c TM |
4535 | } |
4536 | ||
4ce70ada | 4537 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4538 | { |
4ce70ada | 4539 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4540 | |
911d1aaf | 4541 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c | 4542 | return; |
795a88c9 | 4543 | if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) { |
963d8fe5 TM |
4544 | /* Note: exit _without_ running nfs4_locku_done */ |
4545 | task->tk_action = NULL; | |
faf5f49c TM |
4546 | return; |
4547 | } | |
26e976a8 | 4548 | calldata->timestamp = jiffies; |
035168ab | 4549 | if (nfs4_setup_sequence(calldata->server, |
a893693c | 4550 | &calldata->arg.seq_args, |
2240a9e2 TM |
4551 | &calldata->res.seq_res, |
4552 | task) != 0) | |
4553 | nfs_release_seqid(calldata->arg.seqid); | |
4554 | else | |
4555 | rpc_call_start(task); | |
faf5f49c TM |
4556 | } |
4557 | ||
963d8fe5 | 4558 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4559 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4560 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4561 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4562 | }; |
4563 | ||
a5d16a4d TM |
4564 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4565 | struct nfs_open_context *ctx, | |
4566 | struct nfs4_lock_state *lsp, | |
4567 | struct nfs_seqid *seqid) | |
4568 | { | |
4569 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4570 | struct rpc_message msg = { |
4571 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4572 | .rpc_cred = ctx->cred, | |
4573 | }; | |
c970aa85 TM |
4574 | struct rpc_task_setup task_setup_data = { |
4575 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4576 | .rpc_message = &msg, |
c970aa85 | 4577 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4578 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4579 | .flags = RPC_TASK_ASYNC, |
4580 | }; | |
a5d16a4d | 4581 | |
137d6aca FF |
4582 | /* Ensure this is an unlock - when canceling a lock, the |
4583 | * canceled lock is passed in, and it won't be an unlock. | |
4584 | */ | |
4585 | fl->fl_type = F_UNLCK; | |
4586 | ||
a5d16a4d TM |
4587 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4588 | if (data == NULL) { | |
4589 | nfs_free_seqid(seqid); | |
4590 | return ERR_PTR(-ENOMEM); | |
4591 | } | |
4592 | ||
9d12b216 | 4593 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4594 | msg.rpc_argp = &data->arg; |
4595 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4596 | task_setup_data.callback_data = data; |
4597 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4598 | } |
4599 | ||
faf5f49c TM |
4600 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4601 | { | |
19e03c57 | 4602 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 4603 | struct nfs_seqid *seqid; |
1da177e4 | 4604 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4605 | struct rpc_task *task; |
4606 | int status = 0; | |
536ff0f8 | 4607 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4608 | |
8d0a8a9d | 4609 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4610 | /* Unlock _before_ we do the RPC call */ |
4611 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
4612 | down_read(&nfsi->rwsem); |
4613 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4614 | up_read(&nfsi->rwsem); | |
9b073574 | 4615 | goto out; |
19e03c57 TM |
4616 | } |
4617 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 4618 | if (status != 0) |
9b073574 TM |
4619 | goto out; |
4620 | /* Is this a delegated lock? */ | |
4621 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
4622 | goto out; | |
8d0a8a9d | 4623 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 4624 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4625 | status = -ENOMEM; |
911d1aaf | 4626 | if (seqid == NULL) |
9b073574 | 4627 | goto out; |
cd3758e3 | 4628 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4629 | status = PTR_ERR(task); |
4630 | if (IS_ERR(task)) | |
9b073574 | 4631 | goto out; |
a5d16a4d | 4632 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4633 | rpc_put_task(task); |
9b073574 | 4634 | out: |
536ff0f8 | 4635 | request->fl_flags = fl_flags; |
1da177e4 LT |
4636 | return status; |
4637 | } | |
4638 | ||
a5d16a4d TM |
4639 | struct nfs4_lockdata { |
4640 | struct nfs_lock_args arg; | |
4641 | struct nfs_lock_res res; | |
4642 | struct nfs4_lock_state *lsp; | |
4643 | struct nfs_open_context *ctx; | |
4644 | struct file_lock fl; | |
26e976a8 | 4645 | unsigned long timestamp; |
a5d16a4d TM |
4646 | int rpc_status; |
4647 | int cancelled; | |
66179efe | 4648 | struct nfs_server *server; |
a5d16a4d TM |
4649 | }; |
4650 | ||
4651 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4652 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4653 | gfp_t gfp_mask) | |
1da177e4 | 4654 | { |
a5d16a4d TM |
4655 | struct nfs4_lockdata *p; |
4656 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4657 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4658 | |
8535b2be | 4659 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4660 | if (p == NULL) |
4661 | return NULL; | |
4662 | ||
4663 | p->arg.fh = NFS_FH(inode); | |
4664 | p->arg.fl = &p->fl; | |
8535b2be | 4665 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4666 | if (p->arg.open_seqid == NULL) |
4667 | goto out_free; | |
8535b2be | 4668 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4669 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4670 | goto out_free_seqid; |
a5d16a4d | 4671 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4672 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
48c22eb2 | 4673 | p->arg.lock_owner.id = lsp->ls_seqid.owner_id; |
d035c36c | 4674 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4675 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4676 | p->lsp = lsp; |
66179efe | 4677 | p->server = server; |
a5d16a4d TM |
4678 | atomic_inc(&lsp->ls_count); |
4679 | p->ctx = get_nfs_open_context(ctx); | |
4680 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4681 | return p; | |
2f74c0a0 TM |
4682 | out_free_seqid: |
4683 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4684 | out_free: |
4685 | kfree(p); | |
4686 | return NULL; | |
4687 | } | |
4688 | ||
4689 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4690 | { | |
4691 | struct nfs4_lockdata *data = calldata; | |
4692 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4693 | |
3110ff80 | 4694 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
4695 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
4696 | return; | |
a5d16a4d TM |
4697 | /* Do we need to do an open_to_lock_owner? */ |
4698 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 | 4699 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
2240a9e2 | 4700 | goto out_release_lock_seqid; |
a5d16a4d TM |
4701 | data->arg.open_stateid = &state->stateid; |
4702 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4703 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4704 | } else |
4705 | data->arg.new_lock_owner = 0; | |
26e976a8 | 4706 | data->timestamp = jiffies; |
035168ab TM |
4707 | if (nfs4_setup_sequence(data->server, |
4708 | &data->arg.seq_args, | |
2240a9e2 TM |
4709 | &data->res.seq_res, |
4710 | task) == 0) { | |
4711 | rpc_call_start(task); | |
66179efe | 4712 | return; |
2240a9e2 TM |
4713 | } |
4714 | nfs_release_seqid(data->arg.open_seqid); | |
4715 | out_release_lock_seqid: | |
4716 | nfs_release_seqid(data->arg.lock_seqid); | |
4717 | dprintk("%s: done!, ret = %d\n", __func__, task->tk_status); | |
a5d16a4d TM |
4718 | } |
4719 | ||
b257957e AB |
4720 | static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata) |
4721 | { | |
4722 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
4723 | nfs4_lock_prepare(task, calldata); | |
4724 | } | |
4725 | ||
a5d16a4d TM |
4726 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4727 | { | |
4728 | struct nfs4_lockdata *data = calldata; | |
4729 | ||
3110ff80 | 4730 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4731 | |
14516c3a TM |
4732 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4733 | return; | |
66179efe | 4734 | |
a5d16a4d | 4735 | data->rpc_status = task->tk_status; |
a5d16a4d | 4736 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4737 | if (data->rpc_status == 0) |
4738 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4739 | else | |
4740 | goto out; | |
4741 | } | |
4742 | if (data->rpc_status == 0) { | |
f597c537 | 4743 | nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid); |
795a88c9 | 4744 | set_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags); |
3d4ff43d | 4745 | renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp); |
a5d16a4d | 4746 | } |
a5d16a4d | 4747 | out: |
3110ff80 | 4748 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4749 | } |
4750 | ||
4751 | static void nfs4_lock_release(void *calldata) | |
4752 | { | |
4753 | struct nfs4_lockdata *data = calldata; | |
4754 | ||
3110ff80 | 4755 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4756 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4757 | if (data->cancelled != 0) { |
4758 | struct rpc_task *task; | |
4759 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4760 | data->arg.lock_seqid); | |
4761 | if (!IS_ERR(task)) | |
bf294b41 | 4762 | rpc_put_task_async(task); |
3110ff80 | 4763 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4764 | } else |
4765 | nfs_free_seqid(data->arg.lock_seqid); | |
4766 | nfs4_put_lock_state(data->lsp); | |
4767 | put_nfs_open_context(data->ctx); | |
4768 | kfree(data); | |
3110ff80 | 4769 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4770 | } |
4771 | ||
4772 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4773 | .rpc_call_prepare = nfs4_lock_prepare, | |
4774 | .rpc_call_done = nfs4_lock_done, | |
4775 | .rpc_release = nfs4_lock_release, | |
4776 | }; | |
4777 | ||
b257957e AB |
4778 | static const struct rpc_call_ops nfs4_recover_lock_ops = { |
4779 | .rpc_call_prepare = nfs4_recover_lock_prepare, | |
4780 | .rpc_call_done = nfs4_lock_done, | |
4781 | .rpc_release = nfs4_lock_release, | |
4782 | }; | |
4783 | ||
2bee72a6 TM |
4784 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4785 | { | |
2bee72a6 TM |
4786 | switch (error) { |
4787 | case -NFS4ERR_ADMIN_REVOKED: | |
4788 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4789 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 | 4790 | if (new_lock_owner != 0 || |
795a88c9 | 4791 | test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0) |
ecac799a | 4792 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4793 | break; |
4794 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4795 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4796 | case -NFS4ERR_EXPIRED: |
4797 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4798 | }; |
4799 | } | |
4800 | ||
afe6c27c | 4801 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4802 | { |
4803 | struct nfs4_lockdata *data; | |
4804 | struct rpc_task *task; | |
5138fde0 TM |
4805 | struct rpc_message msg = { |
4806 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4807 | .rpc_cred = state->owner->so_cred, | |
4808 | }; | |
c970aa85 TM |
4809 | struct rpc_task_setup task_setup_data = { |
4810 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4811 | .rpc_message = &msg, |
c970aa85 | 4812 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4813 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4814 | .flags = RPC_TASK_ASYNC, |
4815 | }; | |
a5d16a4d TM |
4816 | int ret; |
4817 | ||
3110ff80 | 4818 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4819 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4820 | fl->fl_u.nfs4_fl.owner, |
4821 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4822 | if (data == NULL) |
4823 | return -ENOMEM; | |
4824 | if (IS_SETLKW(cmd)) | |
4825 | data->arg.block = 1; | |
b257957e AB |
4826 | if (recovery_type > NFS_LOCK_NEW) { |
4827 | if (recovery_type == NFS_LOCK_RECLAIM) | |
afe6c27c | 4828 | data->arg.reclaim = NFS_LOCK_RECLAIM; |
b257957e AB |
4829 | task_setup_data.callback_ops = &nfs4_recover_lock_ops; |
4830 | } | |
9d12b216 | 4831 | nfs41_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1); |
1174dd1f TM |
4832 | msg.rpc_argp = &data->arg; |
4833 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4834 | task_setup_data.callback_data = data; |
4835 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 4836 | if (IS_ERR(task)) |
a5d16a4d | 4837 | return PTR_ERR(task); |
a5d16a4d TM |
4838 | ret = nfs4_wait_for_completion_rpc_task(task); |
4839 | if (ret == 0) { | |
4840 | ret = data->rpc_status; | |
2bee72a6 TM |
4841 | if (ret) |
4842 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4843 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4844 | } else |
4845 | data->cancelled = 1; | |
e6b3c4db | 4846 | rpc_put_task(task); |
3110ff80 | 4847 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4848 | return ret; |
1da177e4 LT |
4849 | } |
4850 | ||
4851 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4852 | { | |
202b50dc | 4853 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4854 | struct nfs4_exception exception = { |
4855 | .inode = state->inode, | |
4856 | }; | |
202b50dc TM |
4857 | int err; |
4858 | ||
4859 | do { | |
42a2d13e TM |
4860 | /* Cache the lock if possible... */ |
4861 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4862 | return 0; | |
afe6c27c | 4863 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4864 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4865 | break; |
4866 | nfs4_handle_exception(server, err, &exception); | |
4867 | } while (exception.retry); | |
4868 | return err; | |
1da177e4 LT |
4869 | } |
4870 | ||
4871 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4872 | { | |
202b50dc | 4873 | struct nfs_server *server = NFS_SERVER(state->inode); |
05ffe24f TM |
4874 | struct nfs4_exception exception = { |
4875 | .inode = state->inode, | |
4876 | }; | |
202b50dc TM |
4877 | int err; |
4878 | ||
6bfc93ef TM |
4879 | err = nfs4_set_lock_state(state, request); |
4880 | if (err != 0) | |
4881 | return err; | |
202b50dc | 4882 | do { |
42a2d13e TM |
4883 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4884 | return 0; | |
afe6c27c | 4885 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4886 | switch (err) { |
4887 | default: | |
4888 | goto out; | |
4889 | case -NFS4ERR_GRACE: | |
4890 | case -NFS4ERR_DELAY: | |
4891 | nfs4_handle_exception(server, err, &exception); | |
4892 | err = 0; | |
4893 | } | |
202b50dc | 4894 | } while (exception.retry); |
a9ed2e25 | 4895 | out: |
202b50dc | 4896 | return err; |
1da177e4 LT |
4897 | } |
4898 | ||
f062eb6c | 4899 | #if defined(CONFIG_NFS_V4_1) |
3e60ffdd CL |
4900 | /** |
4901 | * nfs41_check_expired_locks - possibly free a lock stateid | |
4902 | * | |
4903 | * @state: NFSv4 state for an inode | |
4904 | * | |
4905 | * Returns NFS_OK if recovery for this stateid is now finished. | |
4906 | * Otherwise a negative NFS4ERR value is returned. | |
4907 | */ | |
b01dd1d8 | 4908 | static int nfs41_check_expired_locks(struct nfs4_state *state) |
f062eb6c | 4909 | { |
eb64cf96 | 4910 | int status, ret = -NFS4ERR_BAD_STATEID; |
b01dd1d8 | 4911 | struct nfs4_lock_state *lsp; |
f062eb6c BS |
4912 | struct nfs_server *server = NFS_SERVER(state->inode); |
4913 | ||
b01dd1d8 | 4914 | list_for_each_entry(lsp, &state->lock_states, ls_locks) { |
795a88c9 | 4915 | if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { |
b01dd1d8 BS |
4916 | status = nfs41_test_stateid(server, &lsp->ls_stateid); |
4917 | if (status != NFS_OK) { | |
3e60ffdd CL |
4918 | /* Free the stateid unless the server |
4919 | * informs us the stateid is unrecognized. */ | |
89af2739 CL |
4920 | if (status != -NFS4ERR_BAD_STATEID) |
4921 | nfs41_free_stateid(server, | |
4922 | &lsp->ls_stateid); | |
795a88c9 | 4923 | clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); |
b01dd1d8 BS |
4924 | ret = status; |
4925 | } | |
4926 | } | |
4927 | }; | |
4928 | ||
4929 | return ret; | |
4930 | } | |
4931 | ||
4932 | static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4933 | { | |
4934 | int status = NFS_OK; | |
4935 | ||
4936 | if (test_bit(LK_STATE_IN_USE, &state->flags)) | |
4937 | status = nfs41_check_expired_locks(state); | |
eb64cf96 CL |
4938 | if (status != NFS_OK) |
4939 | status = nfs4_lock_expired(state, request); | |
4940 | return status; | |
f062eb6c BS |
4941 | } |
4942 | #endif | |
4943 | ||
1da177e4 LT |
4944 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
4945 | { | |
19e03c57 | 4946 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4947 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 4948 | int status = -ENOLCK; |
1da177e4 | 4949 | |
8e469ebd TM |
4950 | if ((fl_flags & FL_POSIX) && |
4951 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
4952 | goto out; | |
6bfc93ef | 4953 | /* Is this a delegated open? */ |
6bfc93ef TM |
4954 | status = nfs4_set_lock_state(state, request); |
4955 | if (status != 0) | |
4956 | goto out; | |
01c3b861 TM |
4957 | request->fl_flags |= FL_ACCESS; |
4958 | status = do_vfs_lock(request->fl_file, request); | |
4959 | if (status < 0) | |
4960 | goto out; | |
19e03c57 | 4961 | down_read(&nfsi->rwsem); |
01c3b861 | 4962 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4963 | /* Yes: cache locks! */ |
01c3b861 | 4964 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4965 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4966 | status = do_vfs_lock(request->fl_file, request); | |
4967 | goto out_unlock; | |
01c3b861 | 4968 | } |
afe6c27c | 4969 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 4970 | if (status != 0) |
01c3b861 | 4971 | goto out_unlock; |
6bfc93ef | 4972 | /* Note: we always want to sleep here! */ |
01c3b861 | 4973 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4974 | if (do_vfs_lock(request->fl_file, request) < 0) |
a030889a WAA |
4975 | printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock " |
4976 | "manager!\n", __func__); | |
01c3b861 | 4977 | out_unlock: |
19e03c57 | 4978 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4979 | out: |
4980 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4981 | return status; |
4982 | } | |
4983 | ||
4984 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4985 | { | |
a1d0b5ee TM |
4986 | struct nfs4_exception exception = { |
4987 | .state = state, | |
05ffe24f | 4988 | .inode = state->inode, |
a1d0b5ee | 4989 | }; |
1da177e4 LT |
4990 | int err; |
4991 | ||
4992 | do { | |
965b5d67 TM |
4993 | err = _nfs4_proc_setlk(state, cmd, request); |
4994 | if (err == -NFS4ERR_DENIED) | |
4995 | err = -EAGAIN; | |
1da177e4 | 4996 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4997 | err, &exception); |
1da177e4 LT |
4998 | } while (exception.retry); |
4999 | return err; | |
5000 | } | |
5001 | ||
5002 | static int | |
5003 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
5004 | { | |
5005 | struct nfs_open_context *ctx; | |
5006 | struct nfs4_state *state; | |
5007 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
5008 | int status; | |
5009 | ||
5010 | /* verify open state */ | |
cd3758e3 | 5011 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
5012 | state = ctx->state; |
5013 | ||
5014 | if (request->fl_start < 0 || request->fl_end < 0) | |
5015 | return -EINVAL; | |
5016 | ||
d953126a TM |
5017 | if (IS_GETLK(cmd)) { |
5018 | if (state != NULL) | |
5019 | return nfs4_proc_getlk(state, F_GETLK, request); | |
5020 | return 0; | |
5021 | } | |
1da177e4 LT |
5022 | |
5023 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
5024 | return -EINVAL; | |
5025 | ||
d953126a TM |
5026 | if (request->fl_type == F_UNLCK) { |
5027 | if (state != NULL) | |
5028 | return nfs4_proc_unlck(state, cmd, request); | |
5029 | return 0; | |
5030 | } | |
1da177e4 | 5031 | |
d953126a TM |
5032 | if (state == NULL) |
5033 | return -ENOLCK; | |
55725513 TM |
5034 | /* |
5035 | * Don't rely on the VFS having checked the file open mode, | |
5036 | * since it won't do this for flock() locks. | |
5037 | */ | |
f44106e2 | 5038 | switch (request->fl_type) { |
55725513 TM |
5039 | case F_RDLCK: |
5040 | if (!(filp->f_mode & FMODE_READ)) | |
5041 | return -EBADF; | |
5042 | break; | |
5043 | case F_WRLCK: | |
5044 | if (!(filp->f_mode & FMODE_WRITE)) | |
5045 | return -EBADF; | |
5046 | } | |
5047 | ||
1da177e4 LT |
5048 | do { |
5049 | status = nfs4_proc_setlk(state, cmd, request); | |
5050 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
5051 | break; | |
5052 | timeout = nfs4_set_lock_task_retry(timeout); | |
5053 | status = -ERESTARTSYS; | |
5054 | if (signalled()) | |
5055 | break; | |
5056 | } while(status < 0); | |
1da177e4 LT |
5057 | return status; |
5058 | } | |
5059 | ||
888e694c TM |
5060 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
5061 | { | |
5062 | struct nfs_server *server = NFS_SERVER(state->inode); | |
5063 | struct nfs4_exception exception = { }; | |
5064 | int err; | |
5065 | ||
5066 | err = nfs4_set_lock_state(state, fl); | |
5067 | if (err != 0) | |
5068 | goto out; | |
5069 | do { | |
afe6c27c | 5070 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
5071 | switch (err) { |
5072 | default: | |
a030889a WAA |
5073 | printk(KERN_ERR "NFS: %s: unhandled error " |
5074 | "%d.\n", __func__, err); | |
d5122201 | 5075 | case 0: |
965b5d67 | 5076 | case -ESTALE: |
d5122201 TM |
5077 | goto out; |
5078 | case -NFS4ERR_EXPIRED: | |
0ced63d1 | 5079 | nfs4_schedule_stateid_recovery(server, state); |
d5122201 | 5080 | case -NFS4ERR_STALE_CLIENTID: |
965b5d67 | 5081 | case -NFS4ERR_STALE_STATEID: |
0400a6b0 TM |
5082 | nfs4_schedule_lease_recovery(server->nfs_client); |
5083 | goto out; | |
74e7bb73 RL |
5084 | case -NFS4ERR_BADSESSION: |
5085 | case -NFS4ERR_BADSLOT: | |
5086 | case -NFS4ERR_BAD_HIGH_SLOT: | |
5087 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
5088 | case -NFS4ERR_DEADSESSION: | |
9f594791 | 5089 | nfs4_schedule_session_recovery(server->nfs_client->cl_session, err); |
d5122201 | 5090 | goto out; |
965b5d67 TM |
5091 | case -ERESTARTSYS: |
5092 | /* | |
5093 | * The show must go on: exit, but mark the | |
5094 | * stateid as needing recovery. | |
5095 | */ | |
a1d0b5ee | 5096 | case -NFS4ERR_DELEG_REVOKED: |
965b5d67 TM |
5097 | case -NFS4ERR_ADMIN_REVOKED: |
5098 | case -NFS4ERR_BAD_STATEID: | |
5099 | case -NFS4ERR_OPENMODE: | |
0400a6b0 | 5100 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
5101 | err = 0; |
5102 | goto out; | |
168667c4 TM |
5103 | case -EKEYEXPIRED: |
5104 | /* | |
5105 | * User RPCSEC_GSS context has expired. | |
5106 | * We cannot recover this stateid now, so | |
5107 | * skip it and allow recovery thread to | |
5108 | * proceed. | |
5109 | */ | |
5110 | err = 0; | |
5111 | goto out; | |
965b5d67 TM |
5112 | case -ENOMEM: |
5113 | case -NFS4ERR_DENIED: | |
5114 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
5115 | err = 0; | |
5116 | goto out; | |
d5122201 TM |
5117 | case -NFS4ERR_DELAY: |
5118 | break; | |
5119 | } | |
888e694c TM |
5120 | err = nfs4_handle_exception(server, err, &exception); |
5121 | } while (exception.retry); | |
5122 | out: | |
5123 | return err; | |
5124 | } | |
6b3b5496 | 5125 | |
cf470c3e TM |
5126 | struct nfs_release_lockowner_data { |
5127 | struct nfs4_lock_state *lsp; | |
5ae67c4f | 5128 | struct nfs_server *server; |
cf470c3e TM |
5129 | struct nfs_release_lockowner_args args; |
5130 | }; | |
5131 | ||
d3c7b7cc TM |
5132 | static void nfs4_release_lockowner_release(void *calldata) |
5133 | { | |
cf470c3e | 5134 | struct nfs_release_lockowner_data *data = calldata; |
5ae67c4f | 5135 | nfs4_free_lock_state(data->server, data->lsp); |
d3c7b7cc TM |
5136 | kfree(calldata); |
5137 | } | |
5138 | ||
17280175 | 5139 | static const struct rpc_call_ops nfs4_release_lockowner_ops = { |
d3c7b7cc TM |
5140 | .rpc_release = nfs4_release_lockowner_release, |
5141 | }; | |
5142 | ||
cf470c3e | 5143 | int nfs4_release_lockowner(struct nfs4_lock_state *lsp) |
d3c7b7cc TM |
5144 | { |
5145 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
cf470c3e | 5146 | struct nfs_release_lockowner_data *data; |
d3c7b7cc TM |
5147 | struct rpc_message msg = { |
5148 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
5149 | }; | |
5150 | ||
5151 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
cf470c3e TM |
5152 | return -EINVAL; |
5153 | data = kmalloc(sizeof(*data), GFP_NOFS); | |
5154 | if (!data) | |
5155 | return -ENOMEM; | |
5156 | data->lsp = lsp; | |
5ae67c4f | 5157 | data->server = server; |
cf470c3e TM |
5158 | data->args.lock_owner.clientid = server->nfs_client->cl_clientid; |
5159 | data->args.lock_owner.id = lsp->ls_seqid.owner_id; | |
5160 | data->args.lock_owner.s_dev = server->s_dev; | |
5161 | msg.rpc_argp = &data->args; | |
5162 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data); | |
5163 | return 0; | |
d3c7b7cc TM |
5164 | } |
5165 | ||
aa1870af BF |
5166 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
5167 | ||
64c2ce8b AK |
5168 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
5169 | const void *buf, size_t buflen, | |
5170 | int flags, int type) | |
6b3b5496 | 5171 | { |
64c2ce8b AK |
5172 | if (strcmp(key, "") != 0) |
5173 | return -EINVAL; | |
4b580ee3 | 5174 | |
64c2ce8b | 5175 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5176 | } |
5177 | ||
64c2ce8b AK |
5178 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
5179 | void *buf, size_t buflen, int type) | |
6b3b5496 | 5180 | { |
64c2ce8b AK |
5181 | if (strcmp(key, "") != 0) |
5182 | return -EINVAL; | |
aa1870af | 5183 | |
64c2ce8b | 5184 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
5185 | } |
5186 | ||
64c2ce8b AK |
5187 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
5188 | size_t list_len, const char *name, | |
5189 | size_t name_len, int type) | |
6b3b5496 | 5190 | { |
64c2ce8b | 5191 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 5192 | |
096455a2 BF |
5193 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
5194 | return 0; | |
64c2ce8b AK |
5195 | |
5196 | if (list && len <= list_len) | |
5197 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 5198 | return len; |
6b3b5496 BF |
5199 | } |
5200 | ||
533eb461 AA |
5201 | /* |
5202 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
5203 | */ | |
69aaaae1 TM |
5204 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
5205 | { | |
533eb461 AA |
5206 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
5207 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
5208 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
81934ddb | 5209 | (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS))) |
69aaaae1 TM |
5210 | return; |
5211 | ||
5212 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
81934ddb | 5213 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL; |
69aaaae1 TM |
5214 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
5215 | fattr->nlink = 2; | |
5216 | } | |
5217 | ||
f05d147f BS |
5218 | static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5219 | const struct qstr *name, | |
5220 | struct nfs4_fs_locations *fs_locations, | |
5221 | struct page *page) | |
683b57b4 TM |
5222 | { |
5223 | struct nfs_server *server = NFS_SERVER(dir); | |
5224 | u32 bitmask[2] = { | |
361e624f | 5225 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
5226 | }; |
5227 | struct nfs4_fs_locations_arg args = { | |
5228 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 5229 | .name = name, |
683b57b4 TM |
5230 | .page = page, |
5231 | .bitmask = bitmask, | |
5232 | }; | |
22958463 BH |
5233 | struct nfs4_fs_locations_res res = { |
5234 | .fs_locations = fs_locations, | |
5235 | }; | |
683b57b4 TM |
5236 | struct rpc_message msg = { |
5237 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
5238 | .rpc_argp = &args, | |
22958463 | 5239 | .rpc_resp = &res, |
683b57b4 TM |
5240 | }; |
5241 | int status; | |
5242 | ||
3110ff80 | 5243 | dprintk("%s: start\n", __func__); |
533eb461 AA |
5244 | |
5245 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
5246 | * is not supported */ | |
5247 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
5248 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
5249 | else | |
5250 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
5251 | ||
c228fd3a | 5252 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 5253 | fs_locations->server = server; |
830b8e33 | 5254 | fs_locations->nlocations = 0; |
f05d147f | 5255 | status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 5256 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
5257 | return status; |
5258 | } | |
5259 | ||
f05d147f BS |
5260 | int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, |
5261 | const struct qstr *name, | |
5262 | struct nfs4_fs_locations *fs_locations, | |
5263 | struct page *page) | |
db0a9593 BS |
5264 | { |
5265 | struct nfs4_exception exception = { }; | |
5266 | int err; | |
5267 | do { | |
5268 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
f05d147f | 5269 | _nfs4_proc_fs_locations(client, dir, name, fs_locations, page), |
db0a9593 BS |
5270 | &exception); |
5271 | } while (exception.retry); | |
5272 | return err; | |
5273 | } | |
5274 | ||
5a5ea0d4 BS |
5275 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
5276 | { | |
5277 | int status; | |
5278 | struct nfs4_secinfo_arg args = { | |
5279 | .dir_fh = NFS_FH(dir), | |
5280 | .name = name, | |
5281 | }; | |
5282 | struct nfs4_secinfo_res res = { | |
5283 | .flavors = flavors, | |
5284 | }; | |
5285 | struct rpc_message msg = { | |
5286 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
5287 | .rpc_argp = &args, | |
5288 | .rpc_resp = &res, | |
5289 | }; | |
5290 | ||
5291 | dprintk("NFS call secinfo %s\n", name->name); | |
5292 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
5293 | dprintk("NFS reply secinfo: %d\n", status); | |
5294 | return status; | |
5295 | } | |
5296 | ||
72de53ec BS |
5297 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, |
5298 | struct nfs4_secinfo_flavors *flavors) | |
5a5ea0d4 BS |
5299 | { |
5300 | struct nfs4_exception exception = { }; | |
5301 | int err; | |
5302 | do { | |
5303 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
5304 | _nfs4_proc_secinfo(dir, name, flavors), | |
5305 | &exception); | |
5306 | } while (exception.retry); | |
5307 | return err; | |
5308 | } | |
5309 | ||
557134a3 | 5310 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
5311 | /* |
5312 | * Check the exchange flags returned by the server for invalid flags, having | |
5313 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
5314 | * DS flags set. | |
5315 | */ | |
5316 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
5317 | { | |
5318 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
5319 | goto out_inval; | |
5320 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
5321 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
5322 | goto out_inval; | |
5323 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
5324 | goto out_inval; | |
5325 | return NFS_OK; | |
5326 | out_inval: | |
5327 | return -NFS4ERR_INVAL; | |
5328 | } | |
5329 | ||
78fe0f41 | 5330 | static bool |
79d4e1f0 CL |
5331 | nfs41_same_server_scope(struct nfs41_server_scope *a, |
5332 | struct nfs41_server_scope *b) | |
78fe0f41 WAA |
5333 | { |
5334 | if (a->server_scope_sz == b->server_scope_sz && | |
5335 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
5336 | return true; | |
5337 | ||
5338 | return false; | |
5339 | } | |
5340 | ||
7c44f1ae WAA |
5341 | /* |
5342 | * nfs4_proc_bind_conn_to_session() | |
5343 | * | |
5344 | * The 4.1 client currently uses the same TCP connection for the | |
5345 | * fore and backchannel. | |
5346 | */ | |
2cf047c9 | 5347 | int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred) |
7c44f1ae WAA |
5348 | { |
5349 | int status; | |
5350 | struct nfs41_bind_conn_to_session_res res; | |
5351 | struct rpc_message msg = { | |
5352 | .rpc_proc = | |
5353 | &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION], | |
5354 | .rpc_argp = clp, | |
5355 | .rpc_resp = &res, | |
2cf047c9 | 5356 | .rpc_cred = cred, |
7c44f1ae WAA |
5357 | }; |
5358 | ||
5359 | dprintk("--> %s\n", __func__); | |
5360 | BUG_ON(clp == NULL); | |
5361 | ||
5362 | res.session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); | |
5363 | if (unlikely(res.session == NULL)) { | |
5364 | status = -ENOMEM; | |
5365 | goto out; | |
5366 | } | |
5367 | ||
5368 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5369 | if (status == 0) { | |
5370 | if (memcmp(res.session->sess_id.data, | |
5371 | clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) { | |
5372 | dprintk("NFS: %s: Session ID mismatch\n", __func__); | |
5373 | status = -EIO; | |
5374 | goto out_session; | |
5375 | } | |
5376 | if (res.dir != NFS4_CDFS4_BOTH) { | |
5377 | dprintk("NFS: %s: Unexpected direction from server\n", | |
5378 | __func__); | |
5379 | status = -EIO; | |
5380 | goto out_session; | |
5381 | } | |
5382 | if (res.use_conn_in_rdma_mode) { | |
5383 | dprintk("NFS: %s: Server returned RDMA mode = true\n", | |
5384 | __func__); | |
5385 | status = -EIO; | |
5386 | goto out_session; | |
5387 | } | |
5388 | } | |
5389 | out_session: | |
5390 | kfree(res.session); | |
5391 | out: | |
5392 | dprintk("<-- %s status= %d\n", __func__, status); | |
5393 | return status; | |
5394 | } | |
5395 | ||
99fe60d0 BH |
5396 | /* |
5397 | * nfs4_proc_exchange_id() | |
5398 | * | |
6bbb4ae8 CL |
5399 | * Returns zero, a negative errno, or a negative NFS4ERR status code. |
5400 | * | |
99fe60d0 BH |
5401 | * Since the clientid has expired, all compounds using sessions |
5402 | * associated with the stale clientid will be returning | |
5403 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
5404 | * be in some phase of session reset. | |
5405 | */ | |
4d643d1d | 5406 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
5407 | { |
5408 | nfs4_verifier verifier; | |
5409 | struct nfs41_exchange_id_args args = { | |
cd93710e | 5410 | .verifier = &verifier, |
99fe60d0 | 5411 | .client = clp, |
357f54d6 | 5412 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
5413 | }; |
5414 | struct nfs41_exchange_id_res res = { | |
32b01310 | 5415 | 0 |
99fe60d0 BH |
5416 | }; |
5417 | int status; | |
5418 | struct rpc_message msg = { | |
5419 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
5420 | .rpc_argp = &args, | |
5421 | .rpc_resp = &res, | |
5422 | .rpc_cred = cred, | |
5423 | }; | |
99fe60d0 | 5424 | |
f092075d | 5425 | nfs4_init_boot_verifier(clp, &verifier); |
e984a55a CL |
5426 | args.id_len = nfs4_init_uniform_client_string(clp, args.id, |
5427 | sizeof(args.id)); | |
6bbb4ae8 CL |
5428 | dprintk("NFS call exchange_id auth=%s, '%.*s'\n", |
5429 | clp->cl_rpcclient->cl_auth->au_ops->au_name, | |
5430 | args.id_len, args.id); | |
99fe60d0 | 5431 | |
acdeb69d | 5432 | res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), |
bbafffd2 | 5433 | GFP_NOFS); |
acdeb69d | 5434 | if (unlikely(res.server_owner == NULL)) { |
abe9a6d5 WAA |
5435 | status = -ENOMEM; |
5436 | goto out; | |
5437 | } | |
78fe0f41 | 5438 | |
79d4e1f0 | 5439 | res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), |
bbafffd2 | 5440 | GFP_NOFS); |
177313f1 | 5441 | if (unlikely(res.server_scope == NULL)) { |
abe9a6d5 | 5442 | status = -ENOMEM; |
acdeb69d | 5443 | goto out_server_owner; |
abe9a6d5 | 5444 | } |
78fe0f41 | 5445 | |
bbafffd2 | 5446 | res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); |
177313f1 | 5447 | if (unlikely(res.impl_id == NULL)) { |
7d2ed9ac WAA |
5448 | status = -ENOMEM; |
5449 | goto out_server_scope; | |
5450 | } | |
5451 | ||
1bd714f2 | 5452 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
177313f1 | 5453 | if (status == 0) |
32b01310 | 5454 | status = nfs4_check_cl_exchange_flags(res.flags); |
78fe0f41 | 5455 | |
acdeb69d | 5456 | if (status == 0) { |
32b01310 TM |
5457 | clp->cl_clientid = res.clientid; |
5458 | clp->cl_exchange_flags = (res.flags & ~EXCHGID4_FLAG_CONFIRMED_R); | |
5459 | if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) | |
5460 | clp->cl_seqid = res.seqid; | |
5461 | ||
acdeb69d CL |
5462 | kfree(clp->cl_serverowner); |
5463 | clp->cl_serverowner = res.server_owner; | |
5464 | res.server_owner = NULL; | |
78fe0f41 | 5465 | |
7d2ed9ac | 5466 | /* use the most recent implementation id */ |
59155546 CL |
5467 | kfree(clp->cl_implid); |
5468 | clp->cl_implid = res.impl_id; | |
7d2ed9ac | 5469 | |
177313f1 | 5470 | if (clp->cl_serverscope != NULL && |
79d4e1f0 | 5471 | !nfs41_same_server_scope(clp->cl_serverscope, |
78fe0f41 WAA |
5472 | res.server_scope)) { |
5473 | dprintk("%s: server_scope mismatch detected\n", | |
5474 | __func__); | |
5475 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
79d4e1f0 CL |
5476 | kfree(clp->cl_serverscope); |
5477 | clp->cl_serverscope = NULL; | |
78fe0f41 WAA |
5478 | } |
5479 | ||
177313f1 | 5480 | if (clp->cl_serverscope == NULL) { |
79d4e1f0 | 5481 | clp->cl_serverscope = res.server_scope; |
abe9a6d5 WAA |
5482 | goto out; |
5483 | } | |
32b01310 TM |
5484 | } else |
5485 | kfree(res.impl_id); | |
7d2ed9ac | 5486 | |
acdeb69d CL |
5487 | out_server_owner: |
5488 | kfree(res.server_owner); | |
7d2ed9ac | 5489 | out_server_scope: |
abe9a6d5 WAA |
5490 | kfree(res.server_scope); |
5491 | out: | |
177313f1 | 5492 | if (clp->cl_implid != NULL) |
6bbb4ae8 | 5493 | dprintk("NFS reply exchange_id: Server Implementation ID: " |
7d2ed9ac | 5494 | "domain: %s, name: %s, date: %llu,%u\n", |
6bbb4ae8 | 5495 | clp->cl_implid->domain, clp->cl_implid->name, |
59155546 CL |
5496 | clp->cl_implid->date.seconds, |
5497 | clp->cl_implid->date.nseconds); | |
6bbb4ae8 | 5498 | dprintk("NFS reply exchange_id: %d\n", status); |
99fe60d0 BH |
5499 | return status; |
5500 | } | |
5501 | ||
66245539 TM |
5502 | static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, |
5503 | struct rpc_cred *cred) | |
5504 | { | |
5505 | struct rpc_message msg = { | |
5506 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID], | |
5507 | .rpc_argp = clp, | |
5508 | .rpc_cred = cred, | |
5509 | }; | |
5510 | int status; | |
5511 | ||
5512 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); | |
5513 | if (status) | |
02c67525 | 5514 | dprintk("NFS: Got error %d from the server %s on " |
66245539 TM |
5515 | "DESTROY_CLIENTID.", status, clp->cl_hostname); |
5516 | return status; | |
5517 | } | |
5518 | ||
5519 | static int nfs4_proc_destroy_clientid(struct nfs_client *clp, | |
5520 | struct rpc_cred *cred) | |
5521 | { | |
5522 | unsigned int loop; | |
5523 | int ret; | |
5524 | ||
5525 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { | |
5526 | ret = _nfs4_proc_destroy_clientid(clp, cred); | |
5527 | switch (ret) { | |
5528 | case -NFS4ERR_DELAY: | |
5529 | case -NFS4ERR_CLIENTID_BUSY: | |
5530 | ssleep(1); | |
5531 | break; | |
5532 | default: | |
5533 | return ret; | |
5534 | } | |
5535 | } | |
5536 | return 0; | |
5537 | } | |
5538 | ||
5539 | int nfs4_destroy_clientid(struct nfs_client *clp) | |
5540 | { | |
5541 | struct rpc_cred *cred; | |
5542 | int ret = 0; | |
5543 | ||
5544 | if (clp->cl_mvops->minor_version < 1) | |
5545 | goto out; | |
5546 | if (clp->cl_exchange_flags == 0) | |
5547 | goto out; | |
05f4c350 CL |
5548 | if (clp->cl_preserve_clid) |
5549 | goto out; | |
66245539 TM |
5550 | cred = nfs4_get_exchange_id_cred(clp); |
5551 | ret = nfs4_proc_destroy_clientid(clp, cred); | |
5552 | if (cred) | |
5553 | put_rpccred(cred); | |
5554 | switch (ret) { | |
5555 | case 0: | |
5556 | case -NFS4ERR_STALE_CLIENTID: | |
5557 | clp->cl_exchange_flags = 0; | |
5558 | } | |
5559 | out: | |
5560 | return ret; | |
5561 | } | |
5562 | ||
2050f0cc AA |
5563 | struct nfs4_get_lease_time_data { |
5564 | struct nfs4_get_lease_time_args *args; | |
5565 | struct nfs4_get_lease_time_res *res; | |
5566 | struct nfs_client *clp; | |
5567 | }; | |
5568 | ||
5569 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
5570 | void *calldata) | |
5571 | { | |
5572 | int ret; | |
5573 | struct nfs4_get_lease_time_data *data = | |
5574 | (struct nfs4_get_lease_time_data *)calldata; | |
5575 | ||
5576 | dprintk("--> %s\n", __func__); | |
689cf5c1 | 5577 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
2050f0cc AA |
5578 | /* just setup sequence, do not trigger session recovery |
5579 | since we're invoked within one */ | |
5580 | ret = nfs41_setup_sequence(data->clp->cl_session, | |
689cf5c1 | 5581 | &data->args->la_seq_args, |
9d12b216 | 5582 | &data->res->lr_seq_res, task); |
2050f0cc AA |
5583 | |
5584 | BUG_ON(ret == -EAGAIN); | |
5585 | rpc_call_start(task); | |
5586 | dprintk("<-- %s\n", __func__); | |
5587 | } | |
5588 | ||
5589 | /* | |
5590 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
5591 | * from sequence operation or clientid errors. | |
5592 | */ | |
5593 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
5594 | { | |
5595 | struct nfs4_get_lease_time_data *data = | |
5596 | (struct nfs4_get_lease_time_data *)calldata; | |
5597 | ||
5598 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5599 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
5600 | return; | |
2050f0cc AA |
5601 | switch (task->tk_status) { |
5602 | case -NFS4ERR_DELAY: | |
5603 | case -NFS4ERR_GRACE: | |
5604 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
5605 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
5606 | task->tk_status = 0; | |
a8a4ae3a AA |
5607 | /* fall through */ |
5608 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
d00c5d43 | 5609 | rpc_restart_call_prepare(task); |
2050f0cc AA |
5610 | return; |
5611 | } | |
2050f0cc AA |
5612 | dprintk("<-- %s\n", __func__); |
5613 | } | |
5614 | ||
17280175 | 5615 | static const struct rpc_call_ops nfs4_get_lease_time_ops = { |
2050f0cc AA |
5616 | .rpc_call_prepare = nfs4_get_lease_time_prepare, |
5617 | .rpc_call_done = nfs4_get_lease_time_done, | |
5618 | }; | |
5619 | ||
5620 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
5621 | { | |
5622 | struct rpc_task *task; | |
5623 | struct nfs4_get_lease_time_args args; | |
5624 | struct nfs4_get_lease_time_res res = { | |
5625 | .lr_fsinfo = fsinfo, | |
5626 | }; | |
5627 | struct nfs4_get_lease_time_data data = { | |
5628 | .args = &args, | |
5629 | .res = &res, | |
5630 | .clp = clp, | |
5631 | }; | |
5632 | struct rpc_message msg = { | |
5633 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
5634 | .rpc_argp = &args, | |
5635 | .rpc_resp = &res, | |
5636 | }; | |
5637 | struct rpc_task_setup task_setup = { | |
5638 | .rpc_client = clp->cl_rpcclient, | |
5639 | .rpc_message = &msg, | |
5640 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
5641 | .callback_data = &data, |
5642 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
5643 | }; |
5644 | int status; | |
5645 | ||
9d12b216 | 5646 | nfs41_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0); |
2050f0cc AA |
5647 | dprintk("--> %s\n", __func__); |
5648 | task = rpc_run_task(&task_setup); | |
5649 | ||
5650 | if (IS_ERR(task)) | |
5651 | status = PTR_ERR(task); | |
5652 | else { | |
5653 | status = task->tk_status; | |
5654 | rpc_put_task(task); | |
5655 | } | |
5656 | dprintk("<-- %s return %d\n", __func__, status); | |
5657 | ||
5658 | return status; | |
5659 | } | |
5660 | ||
f86f36a6 TM |
5661 | static struct nfs4_slot *nfs4_alloc_slots(u32 max_slots, gfp_t gfp_flags) |
5662 | { | |
5663 | return kcalloc(max_slots, sizeof(struct nfs4_slot), gfp_flags); | |
5664 | } | |
5665 | ||
5666 | static void nfs4_add_and_init_slots(struct nfs4_slot_table *tbl, | |
5667 | struct nfs4_slot *new, | |
5668 | u32 max_slots, | |
5669 | u32 ivalue) | |
5670 | { | |
5671 | struct nfs4_slot *old = NULL; | |
5672 | u32 i; | |
5673 | ||
5674 | spin_lock(&tbl->slot_tbl_lock); | |
5675 | if (new) { | |
5676 | old = tbl->slots; | |
5677 | tbl->slots = new; | |
5678 | tbl->max_slots = max_slots; | |
5679 | } | |
5680 | tbl->highest_used_slotid = -1; /* no slot is currently used */ | |
5681 | for (i = 0; i < tbl->max_slots; i++) | |
5682 | tbl->slots[i].seq_nr = ivalue; | |
5683 | spin_unlock(&tbl->slot_tbl_lock); | |
5684 | kfree(old); | |
5685 | } | |
5686 | ||
b73dafa7 | 5687 | /* |
f86f36a6 | 5688 | * (re)Initialise a slot table |
b73dafa7 | 5689 | */ |
f86f36a6 TM |
5690 | static int nfs4_realloc_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs, |
5691 | u32 ivalue) | |
ac72b7b3 | 5692 | { |
104aeba4 | 5693 | struct nfs4_slot *new = NULL; |
f86f36a6 | 5694 | int ret = -ENOMEM; |
ac72b7b3 | 5695 | |
104aeba4 AA |
5696 | dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__, |
5697 | max_reqs, tbl->max_slots); | |
ac72b7b3 | 5698 | |
104aeba4 AA |
5699 | /* Does the newly negotiated max_reqs match the existing slot table? */ |
5700 | if (max_reqs != tbl->max_slots) { | |
f86f36a6 | 5701 | new = nfs4_alloc_slots(max_reqs, GFP_NOFS); |
104aeba4 AA |
5702 | if (!new) |
5703 | goto out; | |
104aeba4 | 5704 | } |
f86f36a6 TM |
5705 | ret = 0; |
5706 | ||
5707 | nfs4_add_and_init_slots(tbl, new, max_reqs, ivalue); | |
ac72b7b3 AA |
5708 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, |
5709 | tbl, tbl->slots, tbl->max_slots); | |
5710 | out: | |
5711 | dprintk("<-- %s: return %d\n", __func__, ret); | |
5712 | return ret; | |
5713 | } | |
5714 | ||
f8625a6a RL |
5715 | /* Destroy the slot table */ |
5716 | static void nfs4_destroy_slot_tables(struct nfs4_session *session) | |
5717 | { | |
5718 | if (session->fc_slot_table.slots != NULL) { | |
5719 | kfree(session->fc_slot_table.slots); | |
5720 | session->fc_slot_table.slots = NULL; | |
5721 | } | |
5722 | if (session->bc_slot_table.slots != NULL) { | |
5723 | kfree(session->bc_slot_table.slots); | |
5724 | session->bc_slot_table.slots = NULL; | |
5725 | } | |
5726 | return; | |
5727 | } | |
5728 | ||
050047ce | 5729 | /* |
aacd5537 | 5730 | * Initialize or reset the forechannel and backchannel tables |
050047ce | 5731 | */ |
aacd5537 | 5732 | static int nfs4_setup_session_slot_tables(struct nfs4_session *ses) |
050047ce | 5733 | { |
f26468fb | 5734 | struct nfs4_slot_table *tbl; |
aacd5537 | 5735 | int status; |
050047ce | 5736 | |
aacd5537 AA |
5737 | dprintk("--> %s\n", __func__); |
5738 | /* Fore channel */ | |
5739 | tbl = &ses->fc_slot_table; | |
f86f36a6 TM |
5740 | status = nfs4_realloc_slot_table(tbl, ses->fc_attrs.max_reqs, 1); |
5741 | if (status) /* -ENOMEM */ | |
5742 | return status; | |
aacd5537 AA |
5743 | /* Back channel */ |
5744 | tbl = &ses->bc_slot_table; | |
f86f36a6 TM |
5745 | status = nfs4_realloc_slot_table(tbl, ses->bc_attrs.max_reqs, 0); |
5746 | if (status && tbl->slots == NULL) | |
5747 | /* Fore and back channel share a connection so get | |
5748 | * both slot tables or neither */ | |
5749 | nfs4_destroy_slot_tables(ses); | |
f8625a6a | 5750 | return status; |
557134a3 AA |
5751 | } |
5752 | ||
5753 | struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) | |
5754 | { | |
5755 | struct nfs4_session *session; | |
5756 | struct nfs4_slot_table *tbl; | |
5757 | ||
8535b2be | 5758 | session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); |
557134a3 AA |
5759 | if (!session) |
5760 | return NULL; | |
76db6d95 | 5761 | |
557134a3 | 5762 | tbl = &session->fc_slot_table; |
45d43c29 | 5763 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
557134a3 | 5764 | spin_lock_init(&tbl->slot_tbl_lock); |
689cf5c1 | 5765 | rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); |
42acd021 | 5766 | init_completion(&tbl->complete); |
f8625a6a RL |
5767 | |
5768 | tbl = &session->bc_slot_table; | |
45d43c29 | 5769 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
f8625a6a RL |
5770 | spin_lock_init(&tbl->slot_tbl_lock); |
5771 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); | |
42acd021 | 5772 | init_completion(&tbl->complete); |
f8625a6a | 5773 | |
1055d76d TM |
5774 | session->session_state = 1<<NFS4_SESSION_INITING; |
5775 | ||
557134a3 AA |
5776 | session->clp = clp; |
5777 | return session; | |
5778 | } | |
5779 | ||
5780 | void nfs4_destroy_session(struct nfs4_session *session) | |
5781 | { | |
2446ab60 | 5782 | struct rpc_xprt *xprt; |
848f5bda | 5783 | struct rpc_cred *cred; |
2446ab60 | 5784 | |
848f5bda TM |
5785 | cred = nfs4_get_exchange_id_cred(session->clp); |
5786 | nfs4_proc_destroy_session(session, cred); | |
5787 | if (cred) | |
5788 | put_rpccred(cred); | |
2446ab60 TM |
5789 | |
5790 | rcu_read_lock(); | |
5791 | xprt = rcu_dereference(session->clp->cl_rpcclient->cl_xprt); | |
5792 | rcu_read_unlock(); | |
5a0ffe54 | 5793 | dprintk("%s Destroy backchannel for xprt %p\n", |
2446ab60 TM |
5794 | __func__, xprt); |
5795 | xprt_destroy_backchannel(xprt, NFS41_BC_MIN_CALLBACKS); | |
f8625a6a | 5796 | nfs4_destroy_slot_tables(session); |
557134a3 AA |
5797 | kfree(session); |
5798 | } | |
5799 | ||
fc931582 AA |
5800 | /* |
5801 | * Initialize the values to be used by the client in CREATE_SESSION | |
5802 | * If nfs4_init_session set the fore channel request and response sizes, | |
5803 | * use them. | |
5804 | * | |
5805 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
5806 | * always set csa_cachethis to FALSE because the current implementation | |
5807 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
5808 | */ | |
5809 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
5810 | { | |
5811 | struct nfs4_session *session = args->client->cl_session; | |
5812 | unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz, | |
5813 | mxresp_sz = session->fc_attrs.max_resp_sz; | |
5814 | ||
5815 | if (mxrqst_sz == 0) | |
5816 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
5817 | if (mxresp_sz == 0) | |
5818 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
5819 | /* Fore channel attributes */ | |
fc931582 AA |
5820 | args->fc_attrs.max_rqst_sz = mxrqst_sz; |
5821 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 | 5822 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
ef159e91 | 5823 | args->fc_attrs.max_reqs = max_session_slots; |
fc931582 AA |
5824 | |
5825 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 5826 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
5827 | __func__, |
5828 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 5829 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
5830 | |
5831 | /* Back channel attributes */ | |
fc931582 AA |
5832 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
5833 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
5834 | args->bc_attrs.max_resp_sz_cached = 0; | |
5835 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5836 | args->bc_attrs.max_reqs = 1; | |
5837 | ||
5838 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5839 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5840 | __func__, | |
5841 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5842 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5843 | args->bc_attrs.max_reqs); | |
5844 | } | |
5845 | ||
43c2e885 | 5846 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5847 | { |
43c2e885 BF |
5848 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5849 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5850 | ||
43c2e885 BF |
5851 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
5852 | return -EINVAL; | |
5853 | /* | |
5854 | * Our requested max_ops is the minimum we need; we're not | |
5855 | * prepared to break up compounds into smaller pieces than that. | |
5856 | * So, no point even trying to continue if the server won't | |
5857 | * cooperate: | |
5858 | */ | |
5859 | if (rcvd->max_ops < sent->max_ops) | |
5860 | return -EINVAL; | |
5861 | if (rcvd->max_reqs == 0) | |
5862 | return -EINVAL; | |
b4b9a0c1 VG |
5863 | if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE) |
5864 | rcvd->max_reqs = NFS4_MAX_SLOT_TABLE; | |
43c2e885 | 5865 | return 0; |
8d35301d AA |
5866 | } |
5867 | ||
43c2e885 BF |
5868 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5869 | { | |
5870 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5871 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5872 | |
43c2e885 BF |
5873 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5874 | return -EINVAL; | |
5875 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5876 | return -EINVAL; | |
5877 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5878 | return -EINVAL; | |
5879 | /* These would render the backchannel useless: */ | |
b4b9a0c1 | 5880 | if (rcvd->max_ops != sent->max_ops) |
43c2e885 | 5881 | return -EINVAL; |
b4b9a0c1 | 5882 | if (rcvd->max_reqs != sent->max_reqs) |
43c2e885 BF |
5883 | return -EINVAL; |
5884 | return 0; | |
5885 | } | |
8d35301d | 5886 | |
8d35301d AA |
5887 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5888 | struct nfs4_session *session) | |
5889 | { | |
43c2e885 | 5890 | int ret; |
8d35301d | 5891 | |
43c2e885 BF |
5892 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5893 | if (ret) | |
5894 | return ret; | |
5895 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5896 | } |
5897 | ||
848f5bda TM |
5898 | static int _nfs4_proc_create_session(struct nfs_client *clp, |
5899 | struct rpc_cred *cred) | |
fc931582 AA |
5900 | { |
5901 | struct nfs4_session *session = clp->cl_session; | |
5902 | struct nfs41_create_session_args args = { | |
5903 | .client = clp, | |
5904 | .cb_program = NFS4_CALLBACK, | |
5905 | }; | |
5906 | struct nfs41_create_session_res res = { | |
5907 | .client = clp, | |
5908 | }; | |
5909 | struct rpc_message msg = { | |
5910 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5911 | .rpc_argp = &args, | |
5912 | .rpc_resp = &res, | |
848f5bda | 5913 | .rpc_cred = cred, |
fc931582 AA |
5914 | }; |
5915 | int status; | |
5916 | ||
5917 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5918 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 5919 | |
1bd714f2 | 5920 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
fc931582 | 5921 | |
8d35301d AA |
5922 | if (!status) |
5923 | /* Verify the session's negotiated channel_attrs values */ | |
5924 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5925 | if (!status) { |
5926 | /* Increment the clientid slot sequence id */ | |
5927 | clp->cl_seqid++; | |
5928 | } | |
5929 | ||
5930 | return status; | |
5931 | } | |
5932 | ||
5933 | /* | |
5934 | * Issues a CREATE_SESSION operation to the server. | |
5935 | * It is the responsibility of the caller to verify the session is | |
5936 | * expired before calling this routine. | |
5937 | */ | |
848f5bda | 5938 | int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred) |
fc931582 AA |
5939 | { |
5940 | int status; | |
5941 | unsigned *ptr; | |
fc931582 AA |
5942 | struct nfs4_session *session = clp->cl_session; |
5943 | ||
5944 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5945 | ||
848f5bda | 5946 | status = _nfs4_proc_create_session(clp, cred); |
fc931582 AA |
5947 | if (status) |
5948 | goto out; | |
5949 | ||
aacd5537 AA |
5950 | /* Init or reset the session slot tables */ |
5951 | status = nfs4_setup_session_slot_tables(session); | |
5952 | dprintk("slot table setup returned %d\n", status); | |
fc931582 AA |
5953 | if (status) |
5954 | goto out; | |
5955 | ||
5956 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5957 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5958 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5959 | out: |
5960 | dprintk("<-- %s\n", __func__); | |
5961 | return status; | |
5962 | } | |
5963 | ||
0f3e66c6 AA |
5964 | /* |
5965 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5966 | * The caller must serialize access to this routine. | |
5967 | */ | |
848f5bda TM |
5968 | int nfs4_proc_destroy_session(struct nfs4_session *session, |
5969 | struct rpc_cred *cred) | |
0f3e66c6 | 5970 | { |
848f5bda TM |
5971 | struct rpc_message msg = { |
5972 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION], | |
5973 | .rpc_argp = session, | |
5974 | .rpc_cred = cred, | |
5975 | }; | |
0f3e66c6 | 5976 | int status = 0; |
0f3e66c6 AA |
5977 | |
5978 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5979 | ||
5980 | /* session is still being setup */ | |
5981 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5982 | return status; | |
5983 | ||
1bd714f2 | 5984 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
0f3e66c6 AA |
5985 | |
5986 | if (status) | |
08106ac7 | 5987 | dprintk("NFS: Got error %d from the server on DESTROY_SESSION. " |
0f3e66c6 AA |
5988 | "Session has been destroyed regardless...\n", status); |
5989 | ||
5990 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5991 | return status; | |
5992 | } | |
5993 | ||
7b38c368 TM |
5994 | /* |
5995 | * With sessions, the client is not marked ready until after a | |
5996 | * successful EXCHANGE_ID and CREATE_SESSION. | |
5997 | * | |
5998 | * Map errors cl_cons_state errors to EPROTONOSUPPORT to indicate | |
5999 | * other versions of NFS can be tried. | |
6000 | */ | |
6001 | static int nfs41_check_session_ready(struct nfs_client *clp) | |
6002 | { | |
6003 | int ret; | |
6004 | ||
6005 | if (clp->cl_cons_state == NFS_CS_SESSION_INITING) { | |
6006 | ret = nfs4_client_recover_expired_lease(clp); | |
6007 | if (ret) | |
6008 | return ret; | |
6009 | } | |
6010 | if (clp->cl_cons_state < NFS_CS_READY) | |
6011 | return -EPROTONOSUPPORT; | |
54ac471c | 6012 | smp_rmb(); |
7b38c368 TM |
6013 | return 0; |
6014 | } | |
6015 | ||
fccba804 TM |
6016 | int nfs4_init_session(struct nfs_server *server) |
6017 | { | |
6018 | struct nfs_client *clp = server->nfs_client; | |
2449ea2e | 6019 | struct nfs4_session *session; |
68bf05ef | 6020 | unsigned int rsize, wsize; |
fccba804 TM |
6021 | |
6022 | if (!nfs4_has_session(clp)) | |
6023 | return 0; | |
6024 | ||
1055d76d | 6025 | session = clp->cl_session; |
7b38c368 TM |
6026 | spin_lock(&clp->cl_lock); |
6027 | if (test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) { | |
1055d76d | 6028 | |
7b38c368 TM |
6029 | rsize = server->rsize; |
6030 | if (rsize == 0) | |
6031 | rsize = NFS_MAX_FILE_IO_SIZE; | |
6032 | wsize = server->wsize; | |
6033 | if (wsize == 0) | |
6034 | wsize = NFS_MAX_FILE_IO_SIZE; | |
68bf05ef | 6035 | |
7b38c368 TM |
6036 | session->fc_attrs.max_rqst_sz = wsize + nfs41_maxwrite_overhead; |
6037 | session->fc_attrs.max_resp_sz = rsize + nfs41_maxread_overhead; | |
6038 | } | |
6039 | spin_unlock(&clp->cl_lock); | |
2449ea2e | 6040 | |
7b38c368 | 6041 | return nfs41_check_session_ready(clp); |
fccba804 TM |
6042 | } |
6043 | ||
7b38c368 | 6044 | int nfs4_init_ds_session(struct nfs_client *clp, unsigned long lease_time) |
d83217c1 AA |
6045 | { |
6046 | struct nfs4_session *session = clp->cl_session; | |
6047 | int ret; | |
6048 | ||
7b38c368 TM |
6049 | spin_lock(&clp->cl_lock); |
6050 | if (test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) { | |
6051 | /* | |
6052 | * Do not set NFS_CS_CHECK_LEASE_TIME instead set the | |
6053 | * DS lease to be equal to the MDS lease. | |
6054 | */ | |
6055 | clp->cl_lease_time = lease_time; | |
6056 | clp->cl_last_renewal = jiffies; | |
6057 | } | |
6058 | spin_unlock(&clp->cl_lock); | |
d83217c1 | 6059 | |
7b38c368 TM |
6060 | ret = nfs41_check_session_ready(clp); |
6061 | if (ret) | |
6062 | return ret; | |
6063 | /* Test for the DS role */ | |
6064 | if (!is_ds_client(clp)) | |
6065 | return -ENODEV; | |
6066 | return 0; | |
d83217c1 AA |
6067 | } |
6068 | EXPORT_SYMBOL_GPL(nfs4_init_ds_session); | |
6069 | ||
6070 | ||
fc01cea9 AA |
6071 | /* |
6072 | * Renew the cl_session lease. | |
6073 | */ | |
d5f8d3fe TM |
6074 | struct nfs4_sequence_data { |
6075 | struct nfs_client *clp; | |
6076 | struct nfs4_sequence_args args; | |
6077 | struct nfs4_sequence_res res; | |
6078 | }; | |
6079 | ||
dc96aef9 AB |
6080 | static void nfs41_sequence_release(void *data) |
6081 | { | |
d5f8d3fe TM |
6082 | struct nfs4_sequence_data *calldata = data; |
6083 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 6084 | |
7135840f AB |
6085 | if (atomic_read(&clp->cl_count) > 1) |
6086 | nfs4_schedule_state_renewal(clp); | |
6087 | nfs_put_client(clp); | |
d5f8d3fe | 6088 | kfree(calldata); |
dc96aef9 AB |
6089 | } |
6090 | ||
aa5190d0 TM |
6091 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
6092 | { | |
6093 | switch(task->tk_status) { | |
6094 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
6095 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
6096 | return -EAGAIN; | |
6097 | default: | |
0400a6b0 | 6098 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
6099 | } |
6100 | return 0; | |
6101 | } | |
6102 | ||
dc96aef9 | 6103 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 6104 | { |
d5f8d3fe TM |
6105 | struct nfs4_sequence_data *calldata = data; |
6106 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 6107 | |
14516c3a TM |
6108 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
6109 | return; | |
fc01cea9 AA |
6110 | |
6111 | if (task->tk_status < 0) { | |
6112 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
6113 | if (atomic_read(&clp->cl_count) == 1) |
6114 | goto out; | |
fc01cea9 | 6115 | |
aa5190d0 TM |
6116 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
6117 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
6118 | return; |
6119 | } | |
6120 | } | |
fc01cea9 | 6121 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 6122 | out: |
fc01cea9 AA |
6123 | dprintk("<-- %s\n", __func__); |
6124 | } | |
6125 | ||
6126 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
6127 | { | |
d5f8d3fe TM |
6128 | struct nfs4_sequence_data *calldata = data; |
6129 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
6130 | struct nfs4_sequence_args *args; |
6131 | struct nfs4_sequence_res *res; | |
6132 | ||
fc01cea9 AA |
6133 | args = task->tk_msg.rpc_argp; |
6134 | res = task->tk_msg.rpc_resp; | |
6135 | ||
9d12b216 | 6136 | if (nfs41_setup_sequence(clp->cl_session, args, res, task)) |
fc01cea9 AA |
6137 | return; |
6138 | rpc_call_start(task); | |
6139 | } | |
6140 | ||
6141 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
6142 | .rpc_call_done = nfs41_sequence_call_done, | |
6143 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 6144 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
6145 | }; |
6146 | ||
71ac6da9 | 6147 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) |
fc01cea9 | 6148 | { |
d5f8d3fe | 6149 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
6150 | struct rpc_message msg = { |
6151 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
6152 | .rpc_cred = cred, | |
6153 | }; | |
71ac6da9 TM |
6154 | struct rpc_task_setup task_setup_data = { |
6155 | .rpc_client = clp->cl_rpcclient, | |
6156 | .rpc_message = &msg, | |
6157 | .callback_ops = &nfs41_sequence_ops, | |
6158 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, | |
6159 | }; | |
fc01cea9 | 6160 | |
7135840f | 6161 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 6162 | return ERR_PTR(-EIO); |
dfb4f309 | 6163 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 6164 | if (calldata == NULL) { |
7135840f | 6165 | nfs_put_client(clp); |
71ac6da9 | 6166 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 6167 | } |
9d12b216 | 6168 | nfs41_init_sequence(&calldata->args, &calldata->res, 0); |
d5f8d3fe TM |
6169 | msg.rpc_argp = &calldata->args; |
6170 | msg.rpc_resp = &calldata->res; | |
6171 | calldata->clp = clp; | |
71ac6da9 | 6172 | task_setup_data.callback_data = calldata; |
fc01cea9 | 6173 | |
71ac6da9 TM |
6174 | return rpc_run_task(&task_setup_data); |
6175 | } | |
6176 | ||
2f60ea6b | 6177 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags) |
71ac6da9 TM |
6178 | { |
6179 | struct rpc_task *task; | |
6180 | int ret = 0; | |
6181 | ||
2f60ea6b TM |
6182 | if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) |
6183 | return 0; | |
71ac6da9 TM |
6184 | task = _nfs41_proc_sequence(clp, cred); |
6185 | if (IS_ERR(task)) | |
6186 | ret = PTR_ERR(task); | |
6187 | else | |
bf294b41 | 6188 | rpc_put_task_async(task); |
71ac6da9 TM |
6189 | dprintk("<-- %s status=%d\n", __func__, ret); |
6190 | return ret; | |
6191 | } | |
6192 | ||
6193 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
6194 | { | |
6195 | struct rpc_task *task; | |
6196 | int ret; | |
6197 | ||
6198 | task = _nfs41_proc_sequence(clp, cred); | |
6199 | if (IS_ERR(task)) { | |
6200 | ret = PTR_ERR(task); | |
6201 | goto out; | |
6202 | } | |
6203 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
6204 | if (!ret) { |
6205 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
6206 | ||
6207 | if (task->tk_status == 0) | |
6208 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 6209 | ret = task->tk_status; |
b4410c2f | 6210 | } |
71ac6da9 TM |
6211 | rpc_put_task(task); |
6212 | out: | |
6213 | dprintk("<-- %s status=%d\n", __func__, ret); | |
6214 | return ret; | |
fc01cea9 AA |
6215 | } |
6216 | ||
fce5c838 RL |
6217 | struct nfs4_reclaim_complete_data { |
6218 | struct nfs_client *clp; | |
6219 | struct nfs41_reclaim_complete_args arg; | |
6220 | struct nfs41_reclaim_complete_res res; | |
6221 | }; | |
6222 | ||
6223 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
6224 | { | |
6225 | struct nfs4_reclaim_complete_data *calldata = data; | |
6226 | ||
b257957e | 6227 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
035168ab TM |
6228 | if (nfs41_setup_sequence(calldata->clp->cl_session, |
6229 | &calldata->arg.seq_args, | |
9d12b216 | 6230 | &calldata->res.seq_res, task)) |
fce5c838 RL |
6231 | return; |
6232 | ||
6233 | rpc_call_start(task); | |
6234 | } | |
6235 | ||
aa5190d0 TM |
6236 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
6237 | { | |
6238 | switch(task->tk_status) { | |
6239 | case 0: | |
6240 | case -NFS4ERR_COMPLETE_ALREADY: | |
6241 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
6242 | break; | |
6243 | case -NFS4ERR_DELAY: | |
aa5190d0 | 6244 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
6245 | /* fall through */ |
6246 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
6247 | return -EAGAIN; |
6248 | default: | |
0400a6b0 | 6249 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
6250 | } |
6251 | return 0; | |
6252 | } | |
6253 | ||
fce5c838 RL |
6254 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
6255 | { | |
6256 | struct nfs4_reclaim_complete_data *calldata = data; | |
6257 | struct nfs_client *clp = calldata->clp; | |
6258 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
6259 | ||
6260 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
6261 | if (!nfs41_sequence_done(task, res)) |
6262 | return; | |
fce5c838 | 6263 | |
aa5190d0 TM |
6264 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
6265 | rpc_restart_call_prepare(task); | |
6266 | return; | |
6267 | } | |
fce5c838 RL |
6268 | dprintk("<-- %s\n", __func__); |
6269 | } | |
6270 | ||
6271 | static void nfs4_free_reclaim_complete_data(void *data) | |
6272 | { | |
6273 | struct nfs4_reclaim_complete_data *calldata = data; | |
6274 | ||
6275 | kfree(calldata); | |
6276 | } | |
6277 | ||
6278 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
6279 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
6280 | .rpc_call_done = nfs4_reclaim_complete_done, | |
6281 | .rpc_release = nfs4_free_reclaim_complete_data, | |
6282 | }; | |
6283 | ||
6284 | /* | |
6285 | * Issue a global reclaim complete. | |
6286 | */ | |
6287 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
6288 | { | |
6289 | struct nfs4_reclaim_complete_data *calldata; | |
6290 | struct rpc_task *task; | |
6291 | struct rpc_message msg = { | |
6292 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
6293 | }; | |
6294 | struct rpc_task_setup task_setup_data = { | |
6295 | .rpc_client = clp->cl_rpcclient, | |
6296 | .rpc_message = &msg, | |
6297 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
6298 | .flags = RPC_TASK_ASYNC, | |
6299 | }; | |
6300 | int status = -ENOMEM; | |
6301 | ||
6302 | dprintk("--> %s\n", __func__); | |
8535b2be | 6303 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
6304 | if (calldata == NULL) |
6305 | goto out; | |
6306 | calldata->clp = clp; | |
6307 | calldata->arg.one_fs = 0; | |
fce5c838 | 6308 | |
9d12b216 | 6309 | nfs41_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0); |
fce5c838 RL |
6310 | msg.rpc_argp = &calldata->arg; |
6311 | msg.rpc_resp = &calldata->res; | |
6312 | task_setup_data.callback_data = calldata; | |
6313 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 6314 | if (IS_ERR(task)) { |
fce5c838 | 6315 | status = PTR_ERR(task); |
acf82b85 DC |
6316 | goto out; |
6317 | } | |
c34c32ea AA |
6318 | status = nfs4_wait_for_completion_rpc_task(task); |
6319 | if (status == 0) | |
6320 | status = task->tk_status; | |
fce5c838 | 6321 | rpc_put_task(task); |
acf82b85 | 6322 | return 0; |
fce5c838 RL |
6323 | out: |
6324 | dprintk("<-- %s status=%d\n", __func__, status); | |
6325 | return status; | |
6326 | } | |
b1f69b75 AA |
6327 | |
6328 | static void | |
6329 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
6330 | { | |
6331 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 6332 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
b1f69b75 AA |
6333 | |
6334 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
6335 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
6336 | * right now covering the LAYOUTGET we are about to send. | |
6337 | * However, that is not so catastrophic, and there seems | |
6338 | * to be no way to prevent it completely. | |
6339 | */ | |
b1f69b75 | 6340 | if (nfs4_setup_sequence(server, &lgp->args.seq_args, |
9d12b216 | 6341 | &lgp->res.seq_res, task)) |
b1f69b75 | 6342 | return; |
cf7d63f1 FI |
6343 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
6344 | NFS_I(lgp->args.inode)->layout, | |
6345 | lgp->args.ctx->state)) { | |
6346 | rpc_exit(task, NFS4_OK); | |
6347 | return; | |
6348 | } | |
b1f69b75 AA |
6349 | rpc_call_start(task); |
6350 | } | |
6351 | ||
6352 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
6353 | { | |
6354 | struct nfs4_layoutget *lgp = calldata; | |
ee314c2a TM |
6355 | struct inode *inode = lgp->args.inode; |
6356 | struct nfs_server *server = NFS_SERVER(inode); | |
6357 | struct pnfs_layout_hdr *lo; | |
6358 | struct nfs4_state *state = NULL; | |
b1f69b75 AA |
6359 | |
6360 | dprintk("--> %s\n", __func__); | |
6361 | ||
6362 | if (!nfs4_sequence_done(task, &lgp->res.seq_res)) | |
ee314c2a | 6363 | goto out; |
b1f69b75 AA |
6364 | |
6365 | switch (task->tk_status) { | |
6366 | case 0: | |
ee314c2a | 6367 | goto out; |
b1f69b75 AA |
6368 | case -NFS4ERR_LAYOUTTRYLATER: |
6369 | case -NFS4ERR_RECALLCONFLICT: | |
6370 | task->tk_status = -NFS4ERR_DELAY; | |
ee314c2a TM |
6371 | break; |
6372 | case -NFS4ERR_EXPIRED: | |
6373 | case -NFS4ERR_BAD_STATEID: | |
6374 | spin_lock(&inode->i_lock); | |
6375 | lo = NFS_I(inode)->layout; | |
6376 | if (!lo || list_empty(&lo->plh_segs)) { | |
6377 | spin_unlock(&inode->i_lock); | |
6378 | /* If the open stateid was bad, then recover it. */ | |
6379 | state = lgp->args.ctx->state; | |
6380 | } else { | |
6381 | LIST_HEAD(head); | |
6382 | ||
6383 | pnfs_mark_matching_lsegs_invalid(lo, &head, NULL); | |
6384 | spin_unlock(&inode->i_lock); | |
6385 | /* Mark the bad layout state as invalid, then | |
6386 | * retry using the open stateid. */ | |
6387 | pnfs_free_lseg_list(&head); | |
b1f69b75 AA |
6388 | } |
6389 | } | |
ee314c2a TM |
6390 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
6391 | rpc_restart_call_prepare(task); | |
6392 | out: | |
b1f69b75 AA |
6393 | dprintk("<-- %s\n", __func__); |
6394 | } | |
6395 | ||
8554116e IK |
6396 | static size_t max_response_pages(struct nfs_server *server) |
6397 | { | |
6398 | u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; | |
6399 | return nfs_page_array_len(0, max_resp_sz); | |
6400 | } | |
6401 | ||
6402 | static void nfs4_free_pages(struct page **pages, size_t size) | |
6403 | { | |
6404 | int i; | |
6405 | ||
6406 | if (!pages) | |
6407 | return; | |
6408 | ||
6409 | for (i = 0; i < size; i++) { | |
6410 | if (!pages[i]) | |
6411 | break; | |
6412 | __free_page(pages[i]); | |
6413 | } | |
6414 | kfree(pages); | |
6415 | } | |
6416 | ||
6417 | static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags) | |
6418 | { | |
6419 | struct page **pages; | |
6420 | int i; | |
6421 | ||
6422 | pages = kcalloc(size, sizeof(struct page *), gfp_flags); | |
6423 | if (!pages) { | |
6424 | dprintk("%s: can't alloc array of %zu pages\n", __func__, size); | |
6425 | return NULL; | |
6426 | } | |
6427 | ||
6428 | for (i = 0; i < size; i++) { | |
6429 | pages[i] = alloc_page(gfp_flags); | |
6430 | if (!pages[i]) { | |
6431 | dprintk("%s: failed to allocate page\n", __func__); | |
6432 | nfs4_free_pages(pages, size); | |
6433 | return NULL; | |
6434 | } | |
6435 | } | |
6436 | ||
6437 | return pages; | |
6438 | } | |
6439 | ||
b1f69b75 AA |
6440 | static void nfs4_layoutget_release(void *calldata) |
6441 | { | |
6442 | struct nfs4_layoutget *lgp = calldata; | |
8554116e IK |
6443 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
6444 | size_t max_pages = max_response_pages(server); | |
b1f69b75 AA |
6445 | |
6446 | dprintk("--> %s\n", __func__); | |
8554116e | 6447 | nfs4_free_pages(lgp->args.layout.pages, max_pages); |
b1f69b75 AA |
6448 | put_nfs_open_context(lgp->args.ctx); |
6449 | kfree(calldata); | |
6450 | dprintk("<-- %s\n", __func__); | |
6451 | } | |
6452 | ||
6453 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
6454 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
6455 | .rpc_call_done = nfs4_layoutget_done, | |
6456 | .rpc_release = nfs4_layoutget_release, | |
6457 | }; | |
6458 | ||
a0b0a6e3 TM |
6459 | struct pnfs_layout_segment * |
6460 | nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags) | |
b1f69b75 AA |
6461 | { |
6462 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
8554116e | 6463 | size_t max_pages = max_response_pages(server); |
b1f69b75 AA |
6464 | struct rpc_task *task; |
6465 | struct rpc_message msg = { | |
6466 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
6467 | .rpc_argp = &lgp->args, | |
6468 | .rpc_resp = &lgp->res, | |
6469 | }; | |
6470 | struct rpc_task_setup task_setup_data = { | |
6471 | .rpc_client = server->client, | |
6472 | .rpc_message = &msg, | |
6473 | .callback_ops = &nfs4_layoutget_call_ops, | |
6474 | .callback_data = lgp, | |
6475 | .flags = RPC_TASK_ASYNC, | |
6476 | }; | |
a0b0a6e3 | 6477 | struct pnfs_layout_segment *lseg = NULL; |
b1f69b75 AA |
6478 | int status = 0; |
6479 | ||
6480 | dprintk("--> %s\n", __func__); | |
6481 | ||
8554116e IK |
6482 | lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags); |
6483 | if (!lgp->args.layout.pages) { | |
6484 | nfs4_layoutget_release(lgp); | |
a0b0a6e3 | 6485 | return ERR_PTR(-ENOMEM); |
8554116e IK |
6486 | } |
6487 | lgp->args.layout.pglen = max_pages * PAGE_SIZE; | |
6488 | ||
35124a09 | 6489 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 | 6490 | lgp->res.seq_res.sr_slot = NULL; |
9d12b216 | 6491 | nfs41_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0); |
b1f69b75 AA |
6492 | task = rpc_run_task(&task_setup_data); |
6493 | if (IS_ERR(task)) | |
a0b0a6e3 | 6494 | return ERR_CAST(task); |
b1f69b75 | 6495 | status = nfs4_wait_for_completion_rpc_task(task); |
c31663d4 FI |
6496 | if (status == 0) |
6497 | status = task->tk_status; | |
6498 | if (status == 0) | |
a0b0a6e3 | 6499 | lseg = pnfs_layout_process(lgp); |
b1f69b75 AA |
6500 | rpc_put_task(task); |
6501 | dprintk("<-- %s status=%d\n", __func__, status); | |
a0b0a6e3 TM |
6502 | if (status) |
6503 | return ERR_PTR(status); | |
6504 | return lseg; | |
b1f69b75 AA |
6505 | } |
6506 | ||
cbe82603 BH |
6507 | static void |
6508 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
6509 | { | |
6510 | struct nfs4_layoutreturn *lrp = calldata; | |
6511 | ||
6512 | dprintk("--> %s\n", __func__); | |
6513 | if (nfs41_setup_sequence(lrp->clp->cl_session, &lrp->args.seq_args, | |
9d12b216 | 6514 | &lrp->res.seq_res, task)) |
cbe82603 BH |
6515 | return; |
6516 | rpc_call_start(task); | |
6517 | } | |
6518 | ||
6519 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
6520 | { | |
6521 | struct nfs4_layoutreturn *lrp = calldata; | |
6522 | struct nfs_server *server; | |
6523 | ||
6524 | dprintk("--> %s\n", __func__); | |
6525 | ||
6526 | if (!nfs4_sequence_done(task, &lrp->res.seq_res)) | |
6527 | return; | |
6528 | ||
6529 | server = NFS_SERVER(lrp->args.inode); | |
6530 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
d00c5d43 | 6531 | rpc_restart_call_prepare(task); |
cbe82603 BH |
6532 | return; |
6533 | } | |
cbe82603 BH |
6534 | dprintk("<-- %s\n", __func__); |
6535 | } | |
6536 | ||
6537 | static void nfs4_layoutreturn_release(void *calldata) | |
6538 | { | |
6539 | struct nfs4_layoutreturn *lrp = calldata; | |
849b286f | 6540 | struct pnfs_layout_hdr *lo = lrp->args.layout; |
cbe82603 BH |
6541 | |
6542 | dprintk("--> %s\n", __func__); | |
849b286f TM |
6543 | spin_lock(&lo->plh_inode->i_lock); |
6544 | if (lrp->res.lrs_present) | |
6545 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); | |
6546 | lo->plh_block_lgets--; | |
6547 | spin_unlock(&lo->plh_inode->i_lock); | |
70c3bd2b | 6548 | pnfs_put_layout_hdr(lrp->args.layout); |
cbe82603 BH |
6549 | kfree(calldata); |
6550 | dprintk("<-- %s\n", __func__); | |
6551 | } | |
6552 | ||
6553 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
6554 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
6555 | .rpc_call_done = nfs4_layoutreturn_done, | |
6556 | .rpc_release = nfs4_layoutreturn_release, | |
6557 | }; | |
6558 | ||
6559 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
6560 | { | |
6561 | struct rpc_task *task; | |
6562 | struct rpc_message msg = { | |
6563 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
6564 | .rpc_argp = &lrp->args, | |
6565 | .rpc_resp = &lrp->res, | |
6566 | }; | |
6567 | struct rpc_task_setup task_setup_data = { | |
6568 | .rpc_client = lrp->clp->cl_rpcclient, | |
6569 | .rpc_message = &msg, | |
6570 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
6571 | .callback_data = lrp, | |
6572 | }; | |
6573 | int status; | |
6574 | ||
6575 | dprintk("--> %s\n", __func__); | |
9d12b216 | 6576 | nfs41_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1); |
cbe82603 BH |
6577 | task = rpc_run_task(&task_setup_data); |
6578 | if (IS_ERR(task)) | |
6579 | return PTR_ERR(task); | |
6580 | status = task->tk_status; | |
6581 | dprintk("<-- %s status=%d\n", __func__, status); | |
6582 | rpc_put_task(task); | |
6583 | return status; | |
6584 | } | |
6585 | ||
7f11d8d3 AA |
6586 | /* |
6587 | * Retrieve the list of Data Server devices from the MDS. | |
6588 | */ | |
6589 | static int _nfs4_getdevicelist(struct nfs_server *server, | |
6590 | const struct nfs_fh *fh, | |
6591 | struct pnfs_devicelist *devlist) | |
6592 | { | |
6593 | struct nfs4_getdevicelist_args args = { | |
6594 | .fh = fh, | |
6595 | .layoutclass = server->pnfs_curr_ld->id, | |
6596 | }; | |
6597 | struct nfs4_getdevicelist_res res = { | |
6598 | .devlist = devlist, | |
6599 | }; | |
6600 | struct rpc_message msg = { | |
6601 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], | |
6602 | .rpc_argp = &args, | |
6603 | .rpc_resp = &res, | |
6604 | }; | |
6605 | int status; | |
6606 | ||
6607 | dprintk("--> %s\n", __func__); | |
6608 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, | |
6609 | &res.seq_res, 0); | |
6610 | dprintk("<-- %s status=%d\n", __func__, status); | |
6611 | return status; | |
6612 | } | |
6613 | ||
6614 | int nfs4_proc_getdevicelist(struct nfs_server *server, | |
6615 | const struct nfs_fh *fh, | |
6616 | struct pnfs_devicelist *devlist) | |
6617 | { | |
6618 | struct nfs4_exception exception = { }; | |
6619 | int err; | |
6620 | ||
6621 | do { | |
6622 | err = nfs4_handle_exception(server, | |
6623 | _nfs4_getdevicelist(server, fh, devlist), | |
6624 | &exception); | |
6625 | } while (exception.retry); | |
6626 | ||
6627 | dprintk("%s: err=%d, num_devs=%u\n", __func__, | |
6628 | err, devlist->num_devs); | |
6629 | ||
6630 | return err; | |
6631 | } | |
6632 | EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); | |
6633 | ||
b1f69b75 AA |
6634 | static int |
6635 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6636 | { | |
6637 | struct nfs4_getdeviceinfo_args args = { | |
6638 | .pdev = pdev, | |
6639 | }; | |
6640 | struct nfs4_getdeviceinfo_res res = { | |
6641 | .pdev = pdev, | |
6642 | }; | |
6643 | struct rpc_message msg = { | |
6644 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
6645 | .rpc_argp = &args, | |
6646 | .rpc_resp = &res, | |
6647 | }; | |
6648 | int status; | |
6649 | ||
6650 | dprintk("--> %s\n", __func__); | |
7c513058 | 6651 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
6652 | dprintk("<-- %s status=%d\n", __func__, status); |
6653 | ||
6654 | return status; | |
6655 | } | |
6656 | ||
6657 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
6658 | { | |
6659 | struct nfs4_exception exception = { }; | |
6660 | int err; | |
6661 | ||
6662 | do { | |
6663 | err = nfs4_handle_exception(server, | |
6664 | _nfs4_proc_getdeviceinfo(server, pdev), | |
6665 | &exception); | |
6666 | } while (exception.retry); | |
6667 | return err; | |
6668 | } | |
6669 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
6670 | ||
863a3c6c AA |
6671 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
6672 | { | |
6673 | struct nfs4_layoutcommit_data *data = calldata; | |
6674 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6675 | ||
6676 | if (nfs4_setup_sequence(server, &data->args.seq_args, | |
9d12b216 | 6677 | &data->res.seq_res, task)) |
863a3c6c AA |
6678 | return; |
6679 | rpc_call_start(task); | |
6680 | } | |
6681 | ||
6682 | static void | |
6683 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
6684 | { | |
6685 | struct nfs4_layoutcommit_data *data = calldata; | |
6686 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
6687 | ||
6688 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
6689 | return; | |
6690 | ||
6691 | switch (task->tk_status) { /* Just ignore these failures */ | |
e59d27e0 TM |
6692 | case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */ |
6693 | case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
6694 | case -NFS4ERR_BADLAYOUT: /* no layout */ | |
6695 | case -NFS4ERR_GRACE: /* loca_recalim always false */ | |
863a3c6c | 6696 | task->tk_status = 0; |
e59d27e0 TM |
6697 | break; |
6698 | case 0: | |
863a3c6c AA |
6699 | nfs_post_op_update_inode_force_wcc(data->args.inode, |
6700 | data->res.fattr); | |
e59d27e0 TM |
6701 | break; |
6702 | default: | |
6703 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
6704 | rpc_restart_call_prepare(task); | |
6705 | return; | |
6706 | } | |
6707 | } | |
863a3c6c AA |
6708 | } |
6709 | ||
6710 | static void nfs4_layoutcommit_release(void *calldata) | |
6711 | { | |
6712 | struct nfs4_layoutcommit_data *data = calldata; | |
a9bae566 | 6713 | struct pnfs_layout_segment *lseg, *tmp; |
92407e75 | 6714 | unsigned long *bitlock = &NFS_I(data->args.inode)->flags; |
863a3c6c | 6715 | |
db29c089 | 6716 | pnfs_cleanup_layoutcommit(data); |
863a3c6c | 6717 | /* Matched by references in pnfs_set_layoutcommit */ |
a9bae566 PT |
6718 | list_for_each_entry_safe(lseg, tmp, &data->lseg_list, pls_lc_list) { |
6719 | list_del_init(&lseg->pls_lc_list); | |
6720 | if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT, | |
6721 | &lseg->pls_flags)) | |
9369a431 | 6722 | pnfs_put_lseg(lseg); |
a9bae566 | 6723 | } |
92407e75 PT |
6724 | |
6725 | clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING, bitlock); | |
6726 | smp_mb__after_clear_bit(); | |
6727 | wake_up_bit(bitlock, NFS_INO_LAYOUTCOMMITTING); | |
6728 | ||
863a3c6c AA |
6729 | put_rpccred(data->cred); |
6730 | kfree(data); | |
6731 | } | |
6732 | ||
6733 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
6734 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
6735 | .rpc_call_done = nfs4_layoutcommit_done, | |
6736 | .rpc_release = nfs4_layoutcommit_release, | |
6737 | }; | |
6738 | ||
6739 | int | |
ef311537 | 6740 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
6741 | { |
6742 | struct rpc_message msg = { | |
6743 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
6744 | .rpc_argp = &data->args, | |
6745 | .rpc_resp = &data->res, | |
6746 | .rpc_cred = data->cred, | |
6747 | }; | |
6748 | struct rpc_task_setup task_setup_data = { | |
6749 | .task = &data->task, | |
6750 | .rpc_client = NFS_CLIENT(data->args.inode), | |
6751 | .rpc_message = &msg, | |
6752 | .callback_ops = &nfs4_layoutcommit_ops, | |
6753 | .callback_data = data, | |
6754 | .flags = RPC_TASK_ASYNC, | |
6755 | }; | |
6756 | struct rpc_task *task; | |
6757 | int status = 0; | |
6758 | ||
6759 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
6760 | "lbw: %llu inode %lu\n", | |
6761 | data->task.tk_pid, sync, | |
6762 | data->args.lastbytewritten, | |
6763 | data->args.inode->i_ino); | |
6764 | ||
9d12b216 | 6765 | nfs41_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); |
863a3c6c AA |
6766 | task = rpc_run_task(&task_setup_data); |
6767 | if (IS_ERR(task)) | |
6768 | return PTR_ERR(task); | |
ef311537 | 6769 | if (sync == false) |
863a3c6c AA |
6770 | goto out; |
6771 | status = nfs4_wait_for_completion_rpc_task(task); | |
6772 | if (status != 0) | |
6773 | goto out; | |
6774 | status = task->tk_status; | |
6775 | out: | |
6776 | dprintk("%s: status %d\n", __func__, status); | |
6777 | rpc_put_task(task); | |
6778 | return status; | |
6779 | } | |
fca78d6d BS |
6780 | |
6781 | static int | |
6782 | _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6783 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6784 | { | |
6785 | struct nfs41_secinfo_no_name_args args = { | |
6786 | .style = SECINFO_STYLE_CURRENT_FH, | |
6787 | }; | |
6788 | struct nfs4_secinfo_res res = { | |
6789 | .flavors = flavors, | |
6790 | }; | |
6791 | struct rpc_message msg = { | |
6792 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME], | |
6793 | .rpc_argp = &args, | |
6794 | .rpc_resp = &res, | |
6795 | }; | |
6796 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); | |
6797 | } | |
6798 | ||
6799 | static int | |
6800 | nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, | |
6801 | struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) | |
6802 | { | |
6803 | struct nfs4_exception exception = { }; | |
6804 | int err; | |
6805 | do { | |
6806 | err = _nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6807 | switch (err) { | |
6808 | case 0: | |
6809 | case -NFS4ERR_WRONGSEC: | |
6810 | case -NFS4ERR_NOTSUPP: | |
05e9cfb4 | 6811 | goto out; |
fca78d6d BS |
6812 | default: |
6813 | err = nfs4_handle_exception(server, err, &exception); | |
6814 | } | |
6815 | } while (exception.retry); | |
05e9cfb4 | 6816 | out: |
fca78d6d BS |
6817 | return err; |
6818 | } | |
6819 | ||
6820 | static int | |
6821 | nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, | |
6822 | struct nfs_fsinfo *info) | |
6823 | { | |
6824 | int err; | |
6825 | struct page *page; | |
6826 | rpc_authflavor_t flavor; | |
6827 | struct nfs4_secinfo_flavors *flavors; | |
6828 | ||
6829 | page = alloc_page(GFP_KERNEL); | |
6830 | if (!page) { | |
6831 | err = -ENOMEM; | |
6832 | goto out; | |
6833 | } | |
6834 | ||
6835 | flavors = page_address(page); | |
6836 | err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); | |
6837 | ||
6838 | /* | |
6839 | * Fall back on "guess and check" method if | |
6840 | * the server doesn't support SECINFO_NO_NAME | |
6841 | */ | |
6842 | if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) { | |
6843 | err = nfs4_find_root_sec(server, fhandle, info); | |
6844 | goto out_freepage; | |
6845 | } | |
6846 | if (err) | |
6847 | goto out_freepage; | |
6848 | ||
6849 | flavor = nfs_find_best_sec(flavors); | |
6850 | if (err == 0) | |
6851 | err = nfs4_lookup_root_sec(server, fhandle, info, flavor); | |
6852 | ||
6853 | out_freepage: | |
6854 | put_page(page); | |
6855 | if (err == -EACCES) | |
6856 | return -EPERM; | |
6857 | out: | |
6858 | return err; | |
6859 | } | |
1cab0652 BS |
6860 | |
6861 | static int _nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) | |
7d974794 BS |
6862 | { |
6863 | int status; | |
6864 | struct nfs41_test_stateid_args args = { | |
1cab0652 | 6865 | .stateid = stateid, |
7d974794 BS |
6866 | }; |
6867 | struct nfs41_test_stateid_res res; | |
6868 | struct rpc_message msg = { | |
6869 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID], | |
6870 | .rpc_argp = &args, | |
6871 | .rpc_resp = &res, | |
6872 | }; | |
1cab0652 | 6873 | |
38527b15 | 6874 | dprintk("NFS call test_stateid %p\n", stateid); |
9d12b216 | 6875 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
1cab0652 | 6876 | status = nfs4_call_sync_sequence(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
38527b15 CL |
6877 | if (status != NFS_OK) { |
6878 | dprintk("NFS reply test_stateid: failed, %d\n", status); | |
377e507d | 6879 | return status; |
38527b15 CL |
6880 | } |
6881 | dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status); | |
377e507d | 6882 | return -res.status; |
7d974794 BS |
6883 | } |
6884 | ||
38527b15 CL |
6885 | /** |
6886 | * nfs41_test_stateid - perform a TEST_STATEID operation | |
6887 | * | |
6888 | * @server: server / transport on which to perform the operation | |
6889 | * @stateid: state ID to test | |
6890 | * | |
6891 | * Returns NFS_OK if the server recognizes that "stateid" is valid. | |
6892 | * Otherwise a negative NFS4ERR value is returned if the operation | |
6893 | * failed or the state ID is not currently valid. | |
6894 | */ | |
1cab0652 | 6895 | static int nfs41_test_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
7d974794 BS |
6896 | { |
6897 | struct nfs4_exception exception = { }; | |
6898 | int err; | |
6899 | do { | |
377e507d CL |
6900 | err = _nfs41_test_stateid(server, stateid); |
6901 | if (err != -NFS4ERR_DELAY) | |
6902 | break; | |
6903 | nfs4_handle_exception(server, err, &exception); | |
7d974794 BS |
6904 | } while (exception.retry); |
6905 | return err; | |
6906 | } | |
9aeda35f | 6907 | |
1cab0652 | 6908 | static int _nfs4_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f | 6909 | { |
9aeda35f | 6910 | struct nfs41_free_stateid_args args = { |
1cab0652 | 6911 | .stateid = stateid, |
9aeda35f BS |
6912 | }; |
6913 | struct nfs41_free_stateid_res res; | |
6914 | struct rpc_message msg = { | |
6915 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID], | |
6916 | .rpc_argp = &args, | |
6917 | .rpc_resp = &res, | |
6918 | }; | |
38527b15 | 6919 | int status; |
9aeda35f | 6920 | |
38527b15 | 6921 | dprintk("NFS call free_stateid %p\n", stateid); |
9d12b216 | 6922 | nfs41_init_sequence(&args.seq_args, &res.seq_res, 0); |
38527b15 | 6923 | status = nfs4_call_sync_sequence(server->client, server, &msg, |
377e507d | 6924 | &args.seq_args, &res.seq_res, 1); |
38527b15 CL |
6925 | dprintk("NFS reply free_stateid: %d\n", status); |
6926 | return status; | |
9aeda35f BS |
6927 | } |
6928 | ||
38527b15 CL |
6929 | /** |
6930 | * nfs41_free_stateid - perform a FREE_STATEID operation | |
6931 | * | |
6932 | * @server: server / transport on which to perform the operation | |
6933 | * @stateid: state ID to release | |
6934 | * | |
6935 | * Returns NFS_OK if the server freed "stateid". Otherwise a | |
6936 | * negative NFS4ERR value is returned. | |
6937 | */ | |
1cab0652 | 6938 | static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid) |
9aeda35f BS |
6939 | { |
6940 | struct nfs4_exception exception = { }; | |
6941 | int err; | |
6942 | do { | |
377e507d CL |
6943 | err = _nfs4_free_stateid(server, stateid); |
6944 | if (err != -NFS4ERR_DELAY) | |
6945 | break; | |
6946 | nfs4_handle_exception(server, err, &exception); | |
9aeda35f BS |
6947 | } while (exception.retry); |
6948 | return err; | |
6949 | } | |
36281caa TM |
6950 | |
6951 | static bool nfs41_match_stateid(const nfs4_stateid *s1, | |
6952 | const nfs4_stateid *s2) | |
6953 | { | |
2d2f24ad | 6954 | if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0) |
36281caa TM |
6955 | return false; |
6956 | ||
2d2f24ad | 6957 | if (s1->seqid == s2->seqid) |
36281caa | 6958 | return true; |
2d2f24ad | 6959 | if (s1->seqid == 0 || s2->seqid == 0) |
36281caa TM |
6960 | return true; |
6961 | ||
6962 | return false; | |
6963 | } | |
6964 | ||
557134a3 AA |
6965 | #endif /* CONFIG_NFS_V4_1 */ |
6966 | ||
36281caa TM |
6967 | static bool nfs4_match_stateid(const nfs4_stateid *s1, |
6968 | const nfs4_stateid *s2) | |
6969 | { | |
f597c537 | 6970 | return nfs4_stateid_match(s1, s2); |
36281caa TM |
6971 | } |
6972 | ||
6973 | ||
17280175 | 6974 | static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 6975 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 6976 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
6977 | .recover_open = nfs4_open_reclaim, |
6978 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 6979 | .establish_clid = nfs4_init_clientid, |
90a16617 | 6980 | .get_clid_cred = nfs4_get_setclientid_cred, |
05f4c350 | 6981 | .detect_trunking = nfs40_discover_server_trunking, |
1da177e4 LT |
6982 | }; |
6983 | ||
591d71cb | 6984 | #if defined(CONFIG_NFS_V4_1) |
17280175 | 6985 | static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { |
591d71cb AA |
6986 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
6987 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
6988 | .recover_open = nfs4_open_reclaim, | |
6989 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 6990 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 6991 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 6992 | .reclaim_complete = nfs41_proc_reclaim_complete, |
05f4c350 | 6993 | .detect_trunking = nfs41_discover_server_trunking, |
591d71cb AA |
6994 | }; |
6995 | #endif /* CONFIG_NFS_V4_1 */ | |
6996 | ||
17280175 | 6997 | static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { |
591d71cb AA |
6998 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
6999 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
7000 | .recover_open = nfs4_open_expired, | |
7001 | .recover_lock = nfs4_lock_expired, | |
7002 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 7003 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
7004 | }; |
7005 | ||
7006 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 7007 | static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { |
7eff03ae | 7008 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 7009 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
f062eb6c BS |
7010 | .recover_open = nfs41_open_expired, |
7011 | .recover_lock = nfs41_lock_expired, | |
4d643d1d | 7012 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 7013 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 7014 | }; |
591d71cb | 7015 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 7016 | |
17280175 | 7017 | static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
29fba38b | 7018 | .sched_state_renewal = nfs4_proc_async_renew, |
a7b72103 | 7019 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 7020 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
7021 | }; |
7022 | ||
7023 | #if defined(CONFIG_NFS_V4_1) | |
17280175 | 7024 | static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { |
29fba38b | 7025 | .sched_state_renewal = nfs41_proc_async_sequence, |
a7b72103 | 7026 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 7027 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
7028 | }; |
7029 | #endif | |
7030 | ||
97dc1359 TM |
7031 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
7032 | .minor_version = 0, | |
7033 | .call_sync = _nfs4_call_sync, | |
36281caa | 7034 | .match_stateid = nfs4_match_stateid, |
fca78d6d | 7035 | .find_root_sec = nfs4_find_root_sec, |
c48f4f35 TM |
7036 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
7037 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
7038 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
7039 | }; |
7040 | ||
7041 | #if defined(CONFIG_NFS_V4_1) | |
7042 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
7043 | .minor_version = 1, | |
7044 | .call_sync = _nfs4_call_sync_session, | |
36281caa | 7045 | .match_stateid = nfs41_match_stateid, |
fca78d6d | 7046 | .find_root_sec = nfs41_find_root_sec, |
c48f4f35 TM |
7047 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
7048 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
7049 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
7050 | }; |
7051 | #endif | |
7052 | ||
97dc1359 TM |
7053 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
7054 | [0] = &nfs_v4_0_minor_ops, | |
7055 | #if defined(CONFIG_NFS_V4_1) | |
7056 | [1] = &nfs_v4_1_minor_ops, | |
7057 | #endif | |
7058 | }; | |
7059 | ||
73a79706 BS |
7060 | const struct inode_operations nfs4_dir_inode_operations = { |
7061 | .create = nfs_create, | |
7062 | .lookup = nfs_lookup, | |
7063 | .atomic_open = nfs_atomic_open, | |
7064 | .link = nfs_link, | |
7065 | .unlink = nfs_unlink, | |
7066 | .symlink = nfs_symlink, | |
7067 | .mkdir = nfs_mkdir, | |
7068 | .rmdir = nfs_rmdir, | |
7069 | .mknod = nfs_mknod, | |
7070 | .rename = nfs_rename, | |
7071 | .permission = nfs_permission, | |
7072 | .getattr = nfs_getattr, | |
7073 | .setattr = nfs_setattr, | |
7074 | .getxattr = generic_getxattr, | |
7075 | .setxattr = generic_setxattr, | |
7076 | .listxattr = generic_listxattr, | |
7077 | .removexattr = generic_removexattr, | |
7078 | }; | |
7079 | ||
92e1d5be | 7080 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
7081 | .permission = nfs_permission, |
7082 | .getattr = nfs_getattr, | |
7083 | .setattr = nfs_setattr, | |
64c2ce8b AK |
7084 | .getxattr = generic_getxattr, |
7085 | .setxattr = generic_setxattr, | |
7086 | .listxattr = generic_listxattr, | |
7087 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
7088 | }; |
7089 | ||
509de811 | 7090 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
7091 | .version = 4, /* protocol version */ |
7092 | .dentry_ops = &nfs4_dentry_operations, | |
7093 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 7094 | .file_inode_ops = &nfs4_file_inode_operations, |
1788ea6e | 7095 | .file_ops = &nfs4_file_operations, |
1da177e4 | 7096 | .getroot = nfs4_proc_get_root, |
281cad46 | 7097 | .submount = nfs4_submount, |
ff9099f2 | 7098 | .try_mount = nfs4_try_mount, |
1da177e4 LT |
7099 | .getattr = nfs4_proc_getattr, |
7100 | .setattr = nfs4_proc_setattr, | |
7101 | .lookup = nfs4_proc_lookup, | |
7102 | .access = nfs4_proc_access, | |
7103 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
7104 | .create = nfs4_proc_create, |
7105 | .remove = nfs4_proc_remove, | |
7106 | .unlink_setup = nfs4_proc_unlink_setup, | |
34e137cc | 7107 | .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare, |
1da177e4 LT |
7108 | .unlink_done = nfs4_proc_unlink_done, |
7109 | .rename = nfs4_proc_rename, | |
d3d4152a | 7110 | .rename_setup = nfs4_proc_rename_setup, |
c6bfa1a1 | 7111 | .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare, |
d3d4152a | 7112 | .rename_done = nfs4_proc_rename_done, |
1da177e4 LT |
7113 | .link = nfs4_proc_link, |
7114 | .symlink = nfs4_proc_symlink, | |
7115 | .mkdir = nfs4_proc_mkdir, | |
7116 | .rmdir = nfs4_proc_remove, | |
7117 | .readdir = nfs4_proc_readdir, | |
7118 | .mknod = nfs4_proc_mknod, | |
7119 | .statfs = nfs4_proc_statfs, | |
7120 | .fsinfo = nfs4_proc_fsinfo, | |
7121 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 7122 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
7123 | .decode_dirent = nfs4_decode_dirent, |
7124 | .read_setup = nfs4_proc_read_setup, | |
1abb5088 | 7125 | .read_pageio_init = pnfs_pageio_init_read, |
ea7c3303 | 7126 | .read_rpc_prepare = nfs4_proc_read_rpc_prepare, |
ec06c096 | 7127 | .read_done = nfs4_read_done, |
1da177e4 | 7128 | .write_setup = nfs4_proc_write_setup, |
57208fa7 | 7129 | .write_pageio_init = pnfs_pageio_init_write, |
c6cb80d0 | 7130 | .write_rpc_prepare = nfs4_proc_write_rpc_prepare, |
788e7a89 | 7131 | .write_done = nfs4_write_done, |
1da177e4 | 7132 | .commit_setup = nfs4_proc_commit_setup, |
0b7c0153 | 7133 | .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare, |
788e7a89 | 7134 | .commit_done = nfs4_commit_done, |
1da177e4 | 7135 | .lock = nfs4_proc_lock, |
e50a1c2e | 7136 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 7137 | .close_context = nfs4_close_context, |
2b484297 | 7138 | .open_context = nfs4_atomic_open, |
011e2a7f | 7139 | .have_delegation = nfs4_have_delegation, |
57ec14c5 | 7140 | .return_delegation = nfs4_inode_return_delegation, |
6663ee7f | 7141 | .alloc_client = nfs4_alloc_client, |
45a52a02 | 7142 | .init_client = nfs4_init_client, |
cdb7eced | 7143 | .free_client = nfs4_free_client, |
1179acc6 BS |
7144 | .create_server = nfs4_create_server, |
7145 | .clone_server = nfs_clone_server, | |
1da177e4 LT |
7146 | }; |
7147 | ||
64c2ce8b AK |
7148 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
7149 | .prefix = XATTR_NAME_NFSV4_ACL, | |
7150 | .list = nfs4_xattr_list_nfs4_acl, | |
7151 | .get = nfs4_xattr_get_nfs4_acl, | |
7152 | .set = nfs4_xattr_set_nfs4_acl, | |
7153 | }; | |
7154 | ||
7155 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
7156 | &nfs4_xattr_nfs4_acl_handler, | |
7157 | NULL | |
7158 | }; | |
7159 | ||
1da177e4 LT |
7160 | /* |
7161 | * Local variables: | |
7162 | * c-basic-offset: 8 | |
7163 | * End: | |
7164 | */ |