Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4proc.c | |
3 | * | |
4 | * Client-side procedure declarations for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/mm.h> | |
1da177e4 LT |
39 | #include <linux/delay.h> |
40 | #include <linux/errno.h> | |
41 | #include <linux/string.h> | |
5a0e3ad6 | 42 | #include <linux/slab.h> |
1da177e4 LT |
43 | #include <linux/sunrpc/clnt.h> |
44 | #include <linux/nfs.h> | |
45 | #include <linux/nfs4.h> | |
46 | #include <linux/nfs_fs.h> | |
47 | #include <linux/nfs_page.h> | |
1da177e4 | 48 | #include <linux/namei.h> |
02a913a7 | 49 | #include <linux/mount.h> |
99fe60d0 | 50 | #include <linux/module.h> |
5a0ffe54 | 51 | #include <linux/sunrpc/bc_xprt.h> |
64c2ce8b | 52 | #include <linux/xattr.h> |
c7a360b0 | 53 | #include <linux/utsname.h> |
1da177e4 | 54 | |
4ce79717 | 55 | #include "nfs4_fs.h" |
1da177e4 | 56 | #include "delegation.h" |
101070ca | 57 | #include "internal.h" |
006ea73e | 58 | #include "iostat.h" |
fc931582 | 59 | #include "callback.h" |
b1f69b75 | 60 | #include "pnfs.h" |
1da177e4 LT |
61 | |
62 | #define NFSDBG_FACILITY NFSDBG_PROC | |
63 | ||
2066fe89 | 64 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
65 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
66 | ||
a78cb57a TM |
67 | #define NFS4_MAX_LOOP_ON_RECOVER (10) |
68 | ||
cdd4e68b | 69 | struct nfs4_opendata; |
864472e9 | 70 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
b257957e | 71 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 72 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
9e33bed5 | 73 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); |
9936781d TM |
74 | static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr); |
75 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); | |
0ab64e0e TM |
76 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
77 | struct nfs_fattr *fattr, struct iattr *sattr, | |
78 | struct nfs4_state *state); | |
1da177e4 | 79 | |
1da177e4 | 80 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 81 | static int nfs4_map_errors(int err) |
1da177e4 | 82 | { |
52567b03 TM |
83 | if (err >= -1000) |
84 | return err; | |
85 | switch (err) { | |
86 | case -NFS4ERR_RESOURCE: | |
87 | return -EREMOTEIO; | |
3ddeb7c5 TM |
88 | case -NFS4ERR_BADOWNER: |
89 | case -NFS4ERR_BADNAME: | |
90 | return -EINVAL; | |
52567b03 | 91 | default: |
1da177e4 | 92 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 93 | __func__, -err); |
52567b03 | 94 | break; |
1da177e4 | 95 | } |
52567b03 | 96 | return -EIO; |
1da177e4 LT |
97 | } |
98 | ||
99 | /* | |
100 | * This is our standard bitmap for GETATTR requests. | |
101 | */ | |
102 | const u32 nfs4_fattr_bitmap[2] = { | |
103 | FATTR4_WORD0_TYPE | |
104 | | FATTR4_WORD0_CHANGE | |
105 | | FATTR4_WORD0_SIZE | |
106 | | FATTR4_WORD0_FSID | |
107 | | FATTR4_WORD0_FILEID, | |
108 | FATTR4_WORD1_MODE | |
109 | | FATTR4_WORD1_NUMLINKS | |
110 | | FATTR4_WORD1_OWNER | |
111 | | FATTR4_WORD1_OWNER_GROUP | |
112 | | FATTR4_WORD1_RAWDEV | |
113 | | FATTR4_WORD1_SPACE_USED | |
114 | | FATTR4_WORD1_TIME_ACCESS | |
115 | | FATTR4_WORD1_TIME_METADATA | |
116 | | FATTR4_WORD1_TIME_MODIFY | |
117 | }; | |
118 | ||
119 | const u32 nfs4_statfs_bitmap[2] = { | |
120 | FATTR4_WORD0_FILES_AVAIL | |
121 | | FATTR4_WORD0_FILES_FREE | |
122 | | FATTR4_WORD0_FILES_TOTAL, | |
123 | FATTR4_WORD1_SPACE_AVAIL | |
124 | | FATTR4_WORD1_SPACE_FREE | |
125 | | FATTR4_WORD1_SPACE_TOTAL | |
126 | }; | |
127 | ||
4ce79717 | 128 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
129 | FATTR4_WORD0_MAXLINK |
130 | | FATTR4_WORD0_MAXNAME, | |
131 | 0 | |
132 | }; | |
133 | ||
134 | const u32 nfs4_fsinfo_bitmap[2] = { FATTR4_WORD0_MAXFILESIZE | |
135 | | FATTR4_WORD0_MAXREAD | |
136 | | FATTR4_WORD0_MAXWRITE | |
137 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 138 | FATTR4_WORD1_TIME_DELTA |
504913fb | 139 | | FATTR4_WORD1_FS_LAYOUT_TYPES |
1da177e4 LT |
140 | }; |
141 | ||
830b8e33 MN |
142 | const u32 nfs4_fs_locations_bitmap[2] = { |
143 | FATTR4_WORD0_TYPE | |
144 | | FATTR4_WORD0_CHANGE | |
145 | | FATTR4_WORD0_SIZE | |
146 | | FATTR4_WORD0_FSID | |
147 | | FATTR4_WORD0_FILEID | |
148 | | FATTR4_WORD0_FS_LOCATIONS, | |
149 | FATTR4_WORD1_MODE | |
150 | | FATTR4_WORD1_NUMLINKS | |
151 | | FATTR4_WORD1_OWNER | |
152 | | FATTR4_WORD1_OWNER_GROUP | |
153 | | FATTR4_WORD1_RAWDEV | |
154 | | FATTR4_WORD1_SPACE_USED | |
155 | | FATTR4_WORD1_TIME_ACCESS | |
156 | | FATTR4_WORD1_TIME_METADATA | |
157 | | FATTR4_WORD1_TIME_MODIFY | |
158 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
159 | }; | |
160 | ||
bc4785cd | 161 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
162 | struct nfs4_readdir_arg *readdir) |
163 | { | |
0dbb4c67 | 164 | __be32 *start, *p; |
1da177e4 LT |
165 | |
166 | BUG_ON(readdir->count < 80); | |
167 | if (cookie > 2) { | |
b7ef1956 | 168 | readdir->cookie = cookie; |
1da177e4 LT |
169 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
170 | return; | |
171 | } | |
172 | ||
173 | readdir->cookie = 0; | |
174 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
175 | if (cookie == 2) | |
176 | return; | |
177 | ||
178 | /* | |
179 | * NFSv4 servers do not return entries for '.' and '..' | |
180 | * Therefore, we fake these entries here. We let '.' | |
181 | * have cookie 0 and '..' have cookie 1. Note that | |
182 | * when talking to the server, we always send cookie 0 | |
183 | * instead of 1 or 2. | |
184 | */ | |
0dbb4c67 | 185 | start = p = kmap_atomic(*readdir->pages, KM_USER0); |
1da177e4 LT |
186 | |
187 | if (cookie == 0) { | |
188 | *p++ = xdr_one; /* next */ | |
189 | *p++ = xdr_zero; /* cookie, first word */ | |
190 | *p++ = xdr_one; /* cookie, second word */ | |
191 | *p++ = xdr_one; /* entry len */ | |
192 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
193 | p++; | |
194 | *p++ = xdr_one; /* bitmap length */ | |
195 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
196 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 197 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
198 | } |
199 | ||
200 | *p++ = xdr_one; /* next */ | |
201 | *p++ = xdr_zero; /* cookie, first word */ | |
202 | *p++ = xdr_two; /* cookie, second word */ | |
203 | *p++ = xdr_two; /* entry len */ | |
204 | memcpy(p, "..\0\0", 4); /* entry */ | |
205 | p++; | |
206 | *p++ = xdr_one; /* bitmap length */ | |
207 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
208 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 209 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
210 | |
211 | readdir->pgbase = (char *)p - (char *)start; | |
212 | readdir->count -= readdir->pgbase; | |
213 | kunmap_atomic(start, KM_USER0); | |
214 | } | |
215 | ||
65de872e TM |
216 | static int nfs4_wait_clnt_recover(struct nfs_client *clp) |
217 | { | |
218 | int res; | |
219 | ||
220 | might_sleep(); | |
221 | ||
e005e804 | 222 | res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING, |
72cb77f4 | 223 | nfs_wait_bit_killable, TASK_KILLABLE); |
65de872e TM |
224 | return res; |
225 | } | |
226 | ||
227 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) | |
228 | { | |
229 | int res = 0; | |
230 | ||
231 | might_sleep(); | |
232 | ||
233 | if (*timeout <= 0) | |
234 | *timeout = NFS4_POLL_RETRY_MIN; | |
235 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
236 | *timeout = NFS4_POLL_RETRY_MAX; | |
237 | schedule_timeout_killable(*timeout); | |
238 | if (fatal_signal_pending(current)) | |
239 | res = -ERESTARTSYS; | |
240 | *timeout <<= 1; | |
241 | return res; | |
242 | } | |
243 | ||
244 | /* This is the error handling routine for processes that are allowed | |
245 | * to sleep. | |
246 | */ | |
b064eca2 | 247 | static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
65de872e TM |
248 | { |
249 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 250 | struct nfs4_state *state = exception->state; |
65de872e TM |
251 | int ret = errorcode; |
252 | ||
253 | exception->retry = 0; | |
254 | switch(errorcode) { | |
255 | case 0: | |
256 | return 0; | |
9e33bed5 TM |
257 | case -NFS4ERR_ADMIN_REVOKED: |
258 | case -NFS4ERR_BAD_STATEID: | |
259 | case -NFS4ERR_OPENMODE: | |
260 | if (state == NULL) | |
261 | break; | |
0400a6b0 TM |
262 | nfs4_schedule_stateid_recovery(server, state); |
263 | goto wait_on_recovery; | |
65de872e | 264 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 265 | case -NFS4ERR_STALE_CLIENTID: |
65de872e | 266 | case -NFS4ERR_EXPIRED: |
0400a6b0 TM |
267 | nfs4_schedule_lease_recovery(clp); |
268 | goto wait_on_recovery; | |
03391693 | 269 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
270 | case -NFS4ERR_BADSESSION: |
271 | case -NFS4ERR_BADSLOT: | |
272 | case -NFS4ERR_BAD_HIGH_SLOT: | |
273 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
274 | case -NFS4ERR_DEADSESSION: | |
275 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
276 | case -NFS4ERR_SEQ_MISORDERED: | |
277 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
278 | errorcode); | |
0400a6b0 | 279 | nfs4_schedule_session_recovery(clp->cl_session); |
4745e315 | 280 | exception->retry = 1; |
b9179237 | 281 | break; |
03391693 | 282 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 283 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
284 | if (exception->timeout > HZ) { |
285 | /* We have retried a decent amount, time to | |
286 | * fail | |
287 | */ | |
288 | ret = -EBUSY; | |
289 | break; | |
290 | } | |
65de872e TM |
291 | case -NFS4ERR_GRACE: |
292 | case -NFS4ERR_DELAY: | |
2c643488 | 293 | case -EKEYEXPIRED: |
65de872e TM |
294 | ret = nfs4_delay(server->client, &exception->timeout); |
295 | if (ret != 0) | |
296 | break; | |
297 | case -NFS4ERR_OLD_STATEID: | |
298 | exception->retry = 1; | |
b064eca2 TM |
299 | break; |
300 | case -NFS4ERR_BADOWNER: | |
301 | /* The following works around a Linux server bug! */ | |
302 | case -NFS4ERR_BADNAME: | |
303 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
304 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
305 | exception->retry = 1; | |
306 | printk(KERN_WARNING "NFS: v4 server %s " | |
307 | "does not accept raw " | |
308 | "uid/gids. " | |
309 | "Reenabling the idmapper.\n", | |
310 | server->nfs_client->cl_hostname); | |
311 | } | |
65de872e TM |
312 | } |
313 | /* We failed to handle the error */ | |
314 | return nfs4_map_errors(ret); | |
0400a6b0 | 315 | wait_on_recovery: |
a2c0b9e2 TM |
316 | ret = nfs4_wait_clnt_recover(clp); |
317 | if (ret == 0) | |
318 | exception->retry = 1; | |
319 | return ret; | |
65de872e TM |
320 | } |
321 | ||
322 | ||
452e9352 | 323 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 324 | { |
1da177e4 LT |
325 | spin_lock(&clp->cl_lock); |
326 | if (time_before(clp->cl_last_renewal,timestamp)) | |
327 | clp->cl_last_renewal = timestamp; | |
328 | spin_unlock(&clp->cl_lock); | |
329 | } | |
330 | ||
452e9352 TM |
331 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
332 | { | |
333 | do_renew_lease(server->nfs_client, timestamp); | |
334 | } | |
335 | ||
cccef3b9 AA |
336 | #if defined(CONFIG_NFS_V4_1) |
337 | ||
e2c4ab3c AA |
338 | /* |
339 | * nfs4_free_slot - free a slot and efficiently update slot table. | |
340 | * | |
341 | * freeing a slot is trivially done by clearing its respective bit | |
342 | * in the bitmap. | |
343 | * If the freed slotid equals highest_used_slotid we want to update it | |
344 | * so that the server would be able to size down the slot table if needed, | |
345 | * otherwise we know that the highest_used_slotid is still in use. | |
346 | * When updating highest_used_slotid there may be "holes" in the bitmap | |
347 | * so we need to scan down from highest_used_slotid to 0 looking for the now | |
348 | * highest slotid in use. | |
349 | * If none found, highest_used_slotid is set to -1. | |
35dc1d74 TM |
350 | * |
351 | * Must be called while holding tbl->slot_tbl_lock | |
e2c4ab3c AA |
352 | */ |
353 | static void | |
dfb4f309 | 354 | nfs4_free_slot(struct nfs4_slot_table *tbl, struct nfs4_slot *free_slot) |
e2c4ab3c | 355 | { |
dfb4f309 | 356 | int free_slotid = free_slot - tbl->slots; |
e2c4ab3c AA |
357 | int slotid = free_slotid; |
358 | ||
dfb4f309 | 359 | BUG_ON(slotid < 0 || slotid >= NFS4_MAX_SLOT_TABLE); |
e2c4ab3c AA |
360 | /* clear used bit in bitmap */ |
361 | __clear_bit(slotid, tbl->used_slots); | |
362 | ||
363 | /* update highest_used_slotid when it is freed */ | |
364 | if (slotid == tbl->highest_used_slotid) { | |
365 | slotid = find_last_bit(tbl->used_slots, tbl->max_slots); | |
bcb56164 | 366 | if (slotid < tbl->max_slots) |
e2c4ab3c AA |
367 | tbl->highest_used_slotid = slotid; |
368 | else | |
369 | tbl->highest_used_slotid = -1; | |
370 | } | |
e2c4ab3c AA |
371 | dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__, |
372 | free_slotid, tbl->highest_used_slotid); | |
373 | } | |
374 | ||
3bfb0fc5 | 375 | /* |
42acd021 | 376 | * Signal state manager thread if session fore channel is drained |
3bfb0fc5 | 377 | */ |
42acd021 | 378 | static void nfs4_check_drain_fc_complete(struct nfs4_session *ses) |
3bfb0fc5 | 379 | { |
689cf5c1 AB |
380 | struct rpc_task *task; |
381 | ||
a2118c33 | 382 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state)) { |
689cf5c1 AB |
383 | task = rpc_wake_up_next(&ses->fc_slot_table.slot_tbl_waitq); |
384 | if (task) | |
385 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
3bfb0fc5 AB |
386 | return; |
387 | } | |
388 | ||
389 | if (ses->fc_slot_table.highest_used_slotid != -1) | |
390 | return; | |
391 | ||
42acd021 AA |
392 | dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__); |
393 | complete(&ses->fc_slot_table.complete); | |
394 | } | |
395 | ||
396 | /* | |
397 | * Signal state manager thread if session back channel is drained | |
398 | */ | |
399 | void nfs4_check_drain_bc_complete(struct nfs4_session *ses) | |
400 | { | |
401 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state) || | |
402 | ses->bc_slot_table.highest_used_slotid != -1) | |
403 | return; | |
404 | dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__); | |
405 | complete(&ses->bc_slot_table.complete); | |
3bfb0fc5 AB |
406 | } |
407 | ||
d185a334 | 408 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 AA |
409 | { |
410 | struct nfs4_slot_table *tbl; | |
411 | ||
d185a334 | 412 | tbl = &res->sr_session->fc_slot_table; |
dfb4f309 | 413 | if (!res->sr_slot) { |
13615871 AA |
414 | /* just wake up the next guy waiting since |
415 | * we may have not consumed a slot after all */ | |
691daf3b | 416 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 417 | return; |
13615871 | 418 | } |
ea028ac9 | 419 | |
35dc1d74 | 420 | spin_lock(&tbl->slot_tbl_lock); |
dfb4f309 | 421 | nfs4_free_slot(tbl, res->sr_slot); |
42acd021 | 422 | nfs4_check_drain_fc_complete(res->sr_session); |
35dc1d74 | 423 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 424 | res->sr_slot = NULL; |
13615871 AA |
425 | } |
426 | ||
14516c3a | 427 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c AA |
428 | { |
429 | unsigned long timestamp; | |
14516c3a | 430 | struct nfs_client *clp; |
b0df806c AA |
431 | |
432 | /* | |
433 | * sr_status remains 1 if an RPC level error occurred. The server | |
434 | * may or may not have processed the sequence operation.. | |
435 | * Proceed as if the server received and processed the sequence | |
436 | * operation. | |
437 | */ | |
438 | if (res->sr_status == 1) | |
439 | res->sr_status = NFS_OK; | |
440 | ||
441 | /* -ERESTARTSYS can result in skipping nfs41_sequence_setup */ | |
dfb4f309 | 442 | if (!res->sr_slot) |
b0df806c AA |
443 | goto out; |
444 | ||
691daf3b | 445 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
446 | switch (res->sr_status) { |
447 | case 0: | |
b0df806c | 448 | /* Update the slot's sequence and clientid lease timer */ |
dfb4f309 | 449 | ++res->sr_slot->seq_nr; |
b0df806c | 450 | timestamp = res->sr_renewal_time; |
14516c3a | 451 | clp = res->sr_session->clp; |
452e9352 | 452 | do_renew_lease(clp, timestamp); |
0629e370 | 453 | /* Check sequence flags */ |
b4410c2f TM |
454 | if (res->sr_status_flags != 0) |
455 | nfs4_schedule_lease_recovery(clp); | |
14516c3a TM |
456 | break; |
457 | case -NFS4ERR_DELAY: | |
458 | /* The server detected a resend of the RPC call and | |
459 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
460 | * of RFC5661. | |
461 | */ | |
12364a4f | 462 | dprintk("%s: slot=%td seq=%d: Operation in progress\n", |
dfb4f309 BH |
463 | __func__, |
464 | res->sr_slot - res->sr_session->fc_slot_table.slots, | |
465 | res->sr_slot->seq_nr); | |
14516c3a TM |
466 | goto out_retry; |
467 | default: | |
468 | /* Just update the slot sequence no. */ | |
dfb4f309 | 469 | ++res->sr_slot->seq_nr; |
b0df806c AA |
470 | } |
471 | out: | |
472 | /* The session may be reset by one of the error handlers. */ | |
473 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 474 | nfs41_sequence_free_slot(res); |
14516c3a TM |
475 | return 1; |
476 | out_retry: | |
d05dd4e9 | 477 | if (!rpc_restart_call(task)) |
14516c3a TM |
478 | goto out; |
479 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
480 | return 0; | |
b0df806c AA |
481 | } |
482 | ||
14516c3a TM |
483 | static int nfs4_sequence_done(struct rpc_task *task, |
484 | struct nfs4_sequence_res *res) | |
df896455 | 485 | { |
14516c3a TM |
486 | if (res->sr_session == NULL) |
487 | return 1; | |
488 | return nfs41_sequence_done(task, res); | |
df896455 TM |
489 | } |
490 | ||
510b8175 BH |
491 | /* |
492 | * nfs4_find_slot - efficiently look for a free slot | |
493 | * | |
494 | * nfs4_find_slot looks for an unset bit in the used_slots bitmap. | |
495 | * If found, we mark the slot as used, update the highest_used_slotid, | |
496 | * and respectively set up the sequence operation args. | |
497 | * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise. | |
fbcd4abc AA |
498 | * |
499 | * Note: must be called with under the slot_tbl_lock. | |
510b8175 BH |
500 | */ |
501 | static u8 | |
40ead580 | 502 | nfs4_find_slot(struct nfs4_slot_table *tbl) |
510b8175 BH |
503 | { |
504 | int slotid; | |
505 | u8 ret_id = NFS4_MAX_SLOT_TABLE; | |
506 | BUILD_BUG_ON((u8)NFS4_MAX_SLOT_TABLE != (int)NFS4_MAX_SLOT_TABLE); | |
507 | ||
510b8175 BH |
508 | dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n", |
509 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, | |
510 | tbl->max_slots); | |
511 | slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots); | |
512 | if (slotid >= tbl->max_slots) | |
513 | goto out; | |
514 | __set_bit(slotid, tbl->used_slots); | |
515 | if (slotid > tbl->highest_used_slotid) | |
516 | tbl->highest_used_slotid = slotid; | |
517 | ret_id = slotid; | |
518 | out: | |
519 | dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n", | |
520 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, ret_id); | |
510b8175 BH |
521 | return ret_id; |
522 | } | |
523 | ||
dc70d7b3 | 524 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
525 | struct nfs4_sequence_args *args, |
526 | struct nfs4_sequence_res *res, | |
527 | int cache_reply, | |
528 | struct rpc_task *task) | |
529 | { | |
fbcd4abc AA |
530 | struct nfs4_slot *slot; |
531 | struct nfs4_slot_table *tbl; | |
532 | u8 slotid; | |
533 | ||
534 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 535 | /* slot already allocated? */ |
dfb4f309 | 536 | if (res->sr_slot != NULL) |
ce5039c1 AA |
537 | return 0; |
538 | ||
fbcd4abc AA |
539 | tbl = &session->fc_slot_table; |
540 | ||
541 | spin_lock(&tbl->slot_tbl_lock); | |
a2118c33 | 542 | if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) && |
5601a00d | 543 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { |
ea028ac9 AA |
544 | /* |
545 | * The state manager will wait until the slot table is empty. | |
546 | * Schedule the reset thread | |
547 | */ | |
05f0d236 | 548 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
b069d94a | 549 | spin_unlock(&tbl->slot_tbl_lock); |
bcb56164 | 550 | dprintk("%s Schedule Session Reset\n", __func__); |
05f0d236 | 551 | return -EAGAIN; |
b069d94a AA |
552 | } |
553 | ||
689cf5c1 AB |
554 | if (!rpc_queue_empty(&tbl->slot_tbl_waitq) && |
555 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { | |
556 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
557 | spin_unlock(&tbl->slot_tbl_lock); | |
558 | dprintk("%s enforce FIFO order\n", __func__); | |
559 | return -EAGAIN; | |
560 | } | |
561 | ||
40ead580 | 562 | slotid = nfs4_find_slot(tbl); |
fbcd4abc AA |
563 | if (slotid == NFS4_MAX_SLOT_TABLE) { |
564 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
565 | spin_unlock(&tbl->slot_tbl_lock); | |
566 | dprintk("<-- %s: no free slots\n", __func__); | |
567 | return -EAGAIN; | |
568 | } | |
569 | spin_unlock(&tbl->slot_tbl_lock); | |
570 | ||
689cf5c1 | 571 | rpc_task_set_priority(task, RPC_PRIORITY_NORMAL); |
fbcd4abc | 572 | slot = tbl->slots + slotid; |
99fe60d0 | 573 | args->sa_session = session; |
fbcd4abc AA |
574 | args->sa_slotid = slotid; |
575 | args->sa_cache_this = cache_reply; | |
576 | ||
577 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr); | |
578 | ||
99fe60d0 | 579 | res->sr_session = session; |
dfb4f309 | 580 | res->sr_slot = slot; |
fbcd4abc | 581 | res->sr_renewal_time = jiffies; |
2a6e26cd | 582 | res->sr_status_flags = 0; |
fbcd4abc AA |
583 | /* |
584 | * sr_status is only set in decode_sequence, and so will remain | |
585 | * set to 1 if an rpc level failure occurs. | |
586 | */ | |
587 | res->sr_status = 1; | |
ce5039c1 AA |
588 | return 0; |
589 | } | |
dc70d7b3 | 590 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 591 | |
035168ab | 592 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
593 | struct nfs4_sequence_args *args, |
594 | struct nfs4_sequence_res *res, | |
595 | int cache_reply, | |
596 | struct rpc_task *task) | |
597 | { | |
035168ab | 598 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
599 | int ret = 0; |
600 | ||
035168ab TM |
601 | if (session == NULL) { |
602 | args->sa_session = NULL; | |
603 | res->sr_session = NULL; | |
604 | goto out; | |
605 | } | |
606 | ||
12364a4f | 607 | dprintk("--> %s clp %p session %p sr_slot %td\n", |
dfb4f309 BH |
608 | __func__, session->clp, session, res->sr_slot ? |
609 | res->sr_slot - session->fc_slot_table.slots : -1); | |
ce5039c1 | 610 | |
035168ab | 611 | ret = nfs41_setup_sequence(session, args, res, cache_reply, |
ce5039c1 | 612 | task); |
ce5039c1 AA |
613 | out: |
614 | dprintk("<-- %s status=%d\n", __func__, ret); | |
615 | return ret; | |
616 | } | |
617 | ||
618 | struct nfs41_call_sync_data { | |
035168ab | 619 | const struct nfs_server *seq_server; |
ce5039c1 AA |
620 | struct nfs4_sequence_args *seq_args; |
621 | struct nfs4_sequence_res *seq_res; | |
622 | int cache_reply; | |
623 | }; | |
624 | ||
625 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
626 | { | |
627 | struct nfs41_call_sync_data *data = calldata; | |
628 | ||
035168ab TM |
629 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
630 | ||
631 | if (nfs4_setup_sequence(data->seq_server, data->seq_args, | |
ce5039c1 AA |
632 | data->seq_res, data->cache_reply, task)) |
633 | return; | |
634 | rpc_call_start(task); | |
635 | } | |
636 | ||
b257957e AB |
637 | static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata) |
638 | { | |
639 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
640 | nfs41_call_sync_prepare(task, calldata); | |
641 | } | |
642 | ||
69ab40c4 AA |
643 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
644 | { | |
645 | struct nfs41_call_sync_data *data = calldata; | |
646 | ||
14516c3a | 647 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
648 | } |
649 | ||
ce5039c1 AA |
650 | struct rpc_call_ops nfs41_call_sync_ops = { |
651 | .rpc_call_prepare = nfs41_call_sync_prepare, | |
69ab40c4 | 652 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
653 | }; |
654 | ||
b257957e AB |
655 | struct rpc_call_ops nfs41_call_priv_sync_ops = { |
656 | .rpc_call_prepare = nfs41_call_priv_sync_prepare, | |
657 | .rpc_call_done = nfs41_call_sync_done, | |
658 | }; | |
659 | ||
035168ab | 660 | static int nfs4_call_sync_sequence(struct nfs_server *server, |
ce5039c1 AA |
661 | struct rpc_message *msg, |
662 | struct nfs4_sequence_args *args, | |
663 | struct nfs4_sequence_res *res, | |
b257957e AB |
664 | int cache_reply, |
665 | int privileged) | |
ce5039c1 AA |
666 | { |
667 | int ret; | |
668 | struct rpc_task *task; | |
669 | struct nfs41_call_sync_data data = { | |
035168ab | 670 | .seq_server = server, |
ce5039c1 AA |
671 | .seq_args = args, |
672 | .seq_res = res, | |
673 | .cache_reply = cache_reply, | |
674 | }; | |
675 | struct rpc_task_setup task_setup = { | |
035168ab | 676 | .rpc_client = server->client, |
ce5039c1 AA |
677 | .rpc_message = msg, |
678 | .callback_ops = &nfs41_call_sync_ops, | |
679 | .callback_data = &data | |
680 | }; | |
681 | ||
dfb4f309 | 682 | res->sr_slot = NULL; |
b257957e AB |
683 | if (privileged) |
684 | task_setup.callback_ops = &nfs41_call_priv_sync_ops; | |
ce5039c1 AA |
685 | task = rpc_run_task(&task_setup); |
686 | if (IS_ERR(task)) | |
687 | ret = PTR_ERR(task); | |
688 | else { | |
689 | ret = task->tk_status; | |
690 | rpc_put_task(task); | |
691 | } | |
692 | return ret; | |
693 | } | |
694 | ||
cccef3b9 AA |
695 | int _nfs4_call_sync_session(struct nfs_server *server, |
696 | struct rpc_message *msg, | |
697 | struct nfs4_sequence_args *args, | |
698 | struct nfs4_sequence_res *res, | |
699 | int cache_reply) | |
700 | { | |
035168ab | 701 | return nfs4_call_sync_sequence(server, msg, args, res, cache_reply, 0); |
cccef3b9 AA |
702 | } |
703 | ||
df896455 | 704 | #else |
14516c3a TM |
705 | static int nfs4_sequence_done(struct rpc_task *task, |
706 | struct nfs4_sequence_res *res) | |
df896455 | 707 | { |
14516c3a | 708 | return 1; |
df896455 | 709 | } |
cccef3b9 AA |
710 | #endif /* CONFIG_NFS_V4_1 */ |
711 | ||
712 | int _nfs4_call_sync(struct nfs_server *server, | |
713 | struct rpc_message *msg, | |
714 | struct nfs4_sequence_args *args, | |
715 | struct nfs4_sequence_res *res, | |
716 | int cache_reply) | |
717 | { | |
f3752975 | 718 | args->sa_session = res->sr_session = NULL; |
cccef3b9 AA |
719 | return rpc_call_sync(server->client, msg, 0); |
720 | } | |
721 | ||
722 | #define nfs4_call_sync(server, msg, args, res, cache_reply) \ | |
97dc1359 | 723 | (server)->nfs_client->cl_mvops->call_sync((server), (msg), &(args)->seq_args, \ |
cccef3b9 AA |
724 | &(res)->seq_res, (cache_reply)) |
725 | ||
38478b24 | 726 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 727 | { |
38478b24 | 728 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 729 | |
38478b24 | 730 | spin_lock(&dir->i_lock); |
40d24704 TM |
731 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; |
732 | if (!cinfo->atomic || cinfo->before != nfsi->change_attr) | |
bfc69a45 | 733 | nfs_force_lookup_revalidate(dir); |
40d24704 | 734 | nfsi->change_attr = cinfo->after; |
38478b24 | 735 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
736 | } |
737 | ||
e56e0b78 | 738 | struct nfs4_opendata { |
c6d00e63 | 739 | struct kref kref; |
e56e0b78 TM |
740 | struct nfs_openargs o_arg; |
741 | struct nfs_openres o_res; | |
cdd4e68b TM |
742 | struct nfs_open_confirmargs c_arg; |
743 | struct nfs_open_confirmres c_res; | |
e56e0b78 TM |
744 | struct nfs_fattr f_attr; |
745 | struct nfs_fattr dir_attr; | |
ad389da7 | 746 | struct path path; |
e56e0b78 TM |
747 | struct dentry *dir; |
748 | struct nfs4_state_owner *owner; | |
aac00a8d | 749 | struct nfs4_state *state; |
e56e0b78 | 750 | struct iattr attrs; |
26e976a8 | 751 | unsigned long timestamp; |
3e309914 | 752 | unsigned int rpc_done : 1; |
24ac23ab TM |
753 | int rpc_status; |
754 | int cancelled; | |
e56e0b78 TM |
755 | }; |
756 | ||
2ced46c2 TM |
757 | |
758 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
759 | { | |
760 | p->o_res.f_attr = &p->f_attr; | |
761 | p->o_res.dir_attr = &p->dir_attr; | |
c1d51931 TM |
762 | p->o_res.seqid = p->o_arg.seqid; |
763 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 TM |
764 | p->o_res.server = p->o_arg.server; |
765 | nfs_fattr_init(&p->f_attr); | |
766 | nfs_fattr_init(&p->dir_attr); | |
767 | } | |
768 | ||
ad389da7 | 769 | static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path, |
dc0b027d | 770 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be TM |
771 | const struct iattr *attrs, |
772 | gfp_t gfp_mask) | |
e56e0b78 | 773 | { |
ad389da7 | 774 | struct dentry *parent = dget_parent(path->dentry); |
e56e0b78 TM |
775 | struct inode *dir = parent->d_inode; |
776 | struct nfs_server *server = NFS_SERVER(dir); | |
777 | struct nfs4_opendata *p; | |
778 | ||
8535b2be | 779 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
780 | if (p == NULL) |
781 | goto err; | |
8535b2be | 782 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
783 | if (p->o_arg.seqid == NULL) |
784 | goto err_free; | |
f6948697 AV |
785 | path_get(path); |
786 | p->path = *path; | |
e56e0b78 TM |
787 | p->dir = parent; |
788 | p->owner = sp; | |
789 | atomic_inc(&sp->so_count); | |
790 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
791 | p->o_arg.open_flags = flags; |
792 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
7539bbab | 793 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 794 | p->o_arg.id = sp->so_owner_id.id; |
ad389da7 | 795 | p->o_arg.name = &p->path.dentry->d_name; |
e56e0b78 TM |
796 | p->o_arg.server = server; |
797 | p->o_arg.bitmask = server->attr_bitmask; | |
798 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; | |
d77d76ff TM |
799 | if (flags & O_CREAT) { |
800 | u32 *s; | |
801 | ||
e56e0b78 TM |
802 | p->o_arg.u.attrs = &p->attrs; |
803 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
d77d76ff TM |
804 | s = (u32 *) p->o_arg.u.verifier.data; |
805 | s[0] = jiffies; | |
806 | s[1] = current->pid; | |
e56e0b78 | 807 | } |
cdd4e68b TM |
808 | p->c_arg.fh = &p->o_res.fh; |
809 | p->c_arg.stateid = &p->o_res.stateid; | |
810 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 811 | nfs4_init_opendata_res(p); |
c6d00e63 | 812 | kref_init(&p->kref); |
e56e0b78 TM |
813 | return p; |
814 | err_free: | |
815 | kfree(p); | |
816 | err: | |
817 | dput(parent); | |
818 | return NULL; | |
819 | } | |
820 | ||
c6d00e63 | 821 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 822 | { |
c6d00e63 TM |
823 | struct nfs4_opendata *p = container_of(kref, |
824 | struct nfs4_opendata, kref); | |
825 | ||
826 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
827 | if (p->state != NULL) |
828 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
829 | nfs4_put_state_owner(p->owner); |
830 | dput(p->dir); | |
31f31db1 | 831 | path_put(&p->path); |
c6d00e63 TM |
832 | kfree(p); |
833 | } | |
834 | ||
835 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
836 | { | |
837 | if (p != NULL) | |
838 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
839 | } |
840 | ||
06f814a3 TM |
841 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
842 | { | |
06f814a3 TM |
843 | int ret; |
844 | ||
06f814a3 | 845 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
846 | return ret; |
847 | } | |
848 | ||
dc0b027d | 849 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
850 | { |
851 | int ret = 0; | |
dc0b027d TM |
852 | |
853 | if (open_mode & O_EXCL) | |
854 | goto out; | |
855 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 856 | case FMODE_READ: |
88069f77 TM |
857 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
858 | && state->n_rdonly != 0; | |
6ee41268 TM |
859 | break; |
860 | case FMODE_WRITE: | |
88069f77 TM |
861 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
862 | && state->n_wronly != 0; | |
6ee41268 TM |
863 | break; |
864 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
865 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
866 | && state->n_rdwr != 0; | |
6ee41268 | 867 | } |
dc0b027d | 868 | out: |
6ee41268 TM |
869 | return ret; |
870 | } | |
871 | ||
dc0b027d | 872 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 873 | { |
dc0b027d | 874 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 875 | return 0; |
15c831bf | 876 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 877 | return 0; |
b7391f44 | 878 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
879 | return 1; |
880 | } | |
881 | ||
dc0b027d | 882 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 883 | { |
dc0b027d | 884 | switch (fmode) { |
e7616923 TM |
885 | case FMODE_WRITE: |
886 | state->n_wronly++; | |
887 | break; | |
888 | case FMODE_READ: | |
889 | state->n_rdonly++; | |
890 | break; | |
891 | case FMODE_READ|FMODE_WRITE: | |
892 | state->n_rdwr++; | |
893 | } | |
dc0b027d | 894 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
895 | } |
896 | ||
dc0b027d | 897 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
898 | { |
899 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
900 | memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data)); | |
901 | memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data)); | |
dc0b027d | 902 | switch (fmode) { |
003707c7 TM |
903 | case FMODE_READ: |
904 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
905 | break; | |
906 | case FMODE_WRITE: | |
907 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
908 | break; | |
909 | case FMODE_READ|FMODE_WRITE: | |
910 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
911 | } | |
e7616923 TM |
912 | } |
913 | ||
dc0b027d | 914 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 915 | { |
8bda4e4c | 916 | write_seqlock(&state->seqlock); |
dc0b027d | 917 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 918 | write_sequnlock(&state->seqlock); |
003707c7 TM |
919 | } |
920 | ||
dc0b027d | 921 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 922 | { |
8bda4e4c TM |
923 | /* |
924 | * Protect the call to nfs4_state_set_mode_locked and | |
925 | * serialise the stateid update | |
926 | */ | |
927 | write_seqlock(&state->seqlock); | |
003707c7 TM |
928 | if (deleg_stateid != NULL) { |
929 | memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data)); | |
930 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
931 | } | |
932 | if (open_stateid != NULL) | |
dc0b027d | 933 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
934 | write_sequnlock(&state->seqlock); |
935 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 936 | update_open_stateflags(state, fmode); |
ec073428 | 937 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
938 | } |
939 | ||
dc0b027d | 940 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
941 | { |
942 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
943 | struct nfs_delegation *deleg_cur; | |
944 | int ret = 0; | |
945 | ||
dc0b027d | 946 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
947 | |
948 | rcu_read_lock(); | |
949 | deleg_cur = rcu_dereference(nfsi->delegation); | |
950 | if (deleg_cur == NULL) | |
951 | goto no_delegation; | |
952 | ||
953 | spin_lock(&deleg_cur->lock); | |
954 | if (nfsi->delegation != deleg_cur || | |
dc0b027d | 955 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
956 | goto no_delegation_unlock; |
957 | ||
958 | if (delegation == NULL) | |
959 | delegation = &deleg_cur->stateid; | |
960 | else if (memcmp(deleg_cur->stateid.data, delegation->data, NFS4_STATEID_SIZE) != 0) | |
961 | goto no_delegation_unlock; | |
962 | ||
b7391f44 | 963 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 964 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
965 | ret = 1; |
966 | no_delegation_unlock: | |
967 | spin_unlock(&deleg_cur->lock); | |
968 | no_delegation: | |
969 | rcu_read_unlock(); | |
970 | ||
971 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 972 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
973 | ret = 1; |
974 | } | |
975 | ||
976 | return ret; | |
977 | } | |
978 | ||
979 | ||
dc0b027d | 980 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
981 | { |
982 | struct nfs_delegation *delegation; | |
983 | ||
984 | rcu_read_lock(); | |
985 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 986 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
987 | rcu_read_unlock(); |
988 | return; | |
989 | } | |
990 | rcu_read_unlock(); | |
991 | nfs_inode_return_delegation(inode); | |
992 | } | |
993 | ||
6ee41268 | 994 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
995 | { |
996 | struct nfs4_state *state = opendata->state; | |
997 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
998 | struct nfs_delegation *delegation; | |
dc0b027d TM |
999 | int open_mode = opendata->o_arg.open_flags & O_EXCL; |
1000 | fmode_t fmode = opendata->o_arg.fmode; | |
aac00a8d TM |
1001 | nfs4_stateid stateid; |
1002 | int ret = -EAGAIN; | |
1003 | ||
aac00a8d | 1004 | for (;;) { |
dc0b027d | 1005 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1006 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1007 | if (can_open_cached(state, fmode, open_mode)) { |
1008 | update_open_stateflags(state, fmode); | |
6ee41268 | 1009 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1010 | goto out_return_state; |
1011 | } | |
1012 | spin_unlock(&state->owner->so_lock); | |
1013 | } | |
34310430 TM |
1014 | rcu_read_lock(); |
1015 | delegation = rcu_dereference(nfsi->delegation); | |
1016 | if (delegation == NULL || | |
dc0b027d | 1017 | !can_open_delegated(delegation, fmode)) { |
34310430 | 1018 | rcu_read_unlock(); |
aac00a8d | 1019 | break; |
34310430 | 1020 | } |
aac00a8d TM |
1021 | /* Save the delegation */ |
1022 | memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data)); | |
1023 | rcu_read_unlock(); | |
af22f94a | 1024 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
1025 | if (ret != 0) |
1026 | goto out; | |
1027 | ret = -EAGAIN; | |
34310430 TM |
1028 | |
1029 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1030 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1031 | goto out_return_state; |
aac00a8d | 1032 | } |
aac00a8d TM |
1033 | out: |
1034 | return ERR_PTR(ret); | |
1035 | out_return_state: | |
1036 | atomic_inc(&state->count); | |
1037 | return state; | |
1038 | } | |
1039 | ||
24ac23ab TM |
1040 | static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) |
1041 | { | |
1042 | struct inode *inode; | |
1043 | struct nfs4_state *state = NULL; | |
003707c7 | 1044 | struct nfs_delegation *delegation; |
1b370bc2 | 1045 | int ret; |
24ac23ab | 1046 | |
aac00a8d | 1047 | if (!data->rpc_done) { |
6ee41268 | 1048 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1049 | goto out; |
1050 | } | |
1051 | ||
1b370bc2 | 1052 | ret = -EAGAIN; |
24ac23ab | 1053 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1054 | goto err; |
24ac23ab | 1055 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 1056 | ret = PTR_ERR(inode); |
03f28e3a | 1057 | if (IS_ERR(inode)) |
1b370bc2 TM |
1058 | goto err; |
1059 | ret = -ENOMEM; | |
24ac23ab TM |
1060 | state = nfs4_get_open_state(inode, data->owner); |
1061 | if (state == NULL) | |
1b370bc2 | 1062 | goto err_put_inode; |
549d6ed5 | 1063 | if (data->o_res.delegation_type != 0) { |
549d6ed5 TM |
1064 | int delegation_flags = 0; |
1065 | ||
003707c7 TM |
1066 | rcu_read_lock(); |
1067 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
1068 | if (delegation) | |
1069 | delegation_flags = delegation->flags; | |
1070 | rcu_read_unlock(); | |
15c831bf | 1071 | if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) |
549d6ed5 TM |
1072 | nfs_inode_set_delegation(state->inode, |
1073 | data->owner->so_cred, | |
1074 | &data->o_res); | |
1075 | else | |
1076 | nfs_inode_reclaim_delegation(state->inode, | |
1077 | data->owner->so_cred, | |
1078 | &data->o_res); | |
1079 | } | |
34310430 TM |
1080 | |
1081 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
dc0b027d | 1082 | data->o_arg.fmode); |
24ac23ab | 1083 | iput(inode); |
aac00a8d | 1084 | out: |
24ac23ab | 1085 | return state; |
1b370bc2 TM |
1086 | err_put_inode: |
1087 | iput(inode); | |
1088 | err: | |
1089 | return ERR_PTR(ret); | |
24ac23ab TM |
1090 | } |
1091 | ||
864472e9 TM |
1092 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1093 | { | |
1094 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1095 | struct nfs_open_context *ctx; | |
1096 | ||
1097 | spin_lock(&state->inode->i_lock); | |
1098 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1099 | if (ctx->state != state) | |
1100 | continue; | |
1101 | get_nfs_open_context(ctx); | |
1102 | spin_unlock(&state->inode->i_lock); | |
1103 | return ctx; | |
1104 | } | |
1105 | spin_unlock(&state->inode->i_lock); | |
1106 | return ERR_PTR(-ENOENT); | |
1107 | } | |
1108 | ||
6f220ed5 TM |
1109 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
1110 | { | |
1111 | struct nfs4_opendata *opendata; | |
1112 | ||
8535b2be | 1113 | opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL, GFP_NOFS); |
6f220ed5 TM |
1114 | if (opendata == NULL) |
1115 | return ERR_PTR(-ENOMEM); | |
1116 | opendata->state = state; | |
1117 | atomic_inc(&state->count); | |
1118 | return opendata; | |
1119 | } | |
1120 | ||
dc0b027d | 1121 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1122 | { |
2ced46c2 | 1123 | struct nfs4_state *newstate; |
864472e9 TM |
1124 | int ret; |
1125 | ||
dc0b027d TM |
1126 | opendata->o_arg.open_flags = 0; |
1127 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1128 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1129 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1130 | nfs4_init_opendata_res(opendata); | |
b257957e | 1131 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1132 | if (ret != 0) |
1133 | return ret; | |
2ced46c2 | 1134 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1135 | if (IS_ERR(newstate)) |
1136 | return PTR_ERR(newstate); | |
dc0b027d | 1137 | nfs4_close_state(&opendata->path, newstate, fmode); |
2ced46c2 | 1138 | *res = newstate; |
864472e9 TM |
1139 | return 0; |
1140 | } | |
1141 | ||
1142 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1143 | { | |
864472e9 | 1144 | struct nfs4_state *newstate; |
864472e9 TM |
1145 | int ret; |
1146 | ||
1147 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1148 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1149 | smp_rmb(); |
1150 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1151 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1152 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1153 | if (ret != 0) |
1154 | return ret; | |
2ced46c2 TM |
1155 | if (newstate != state) |
1156 | return -ESTALE; | |
864472e9 TM |
1157 | } |
1158 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1159 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1160 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1161 | if (ret != 0) |
1162 | return ret; | |
2ced46c2 TM |
1163 | if (newstate != state) |
1164 | return -ESTALE; | |
864472e9 TM |
1165 | } |
1166 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1167 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1168 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1169 | if (ret != 0) |
1170 | return ret; | |
2ced46c2 TM |
1171 | if (newstate != state) |
1172 | return -ESTALE; | |
864472e9 | 1173 | } |
1ac7e2fd TM |
1174 | /* |
1175 | * We may have performed cached opens for all three recoveries. | |
1176 | * Check if we need to update the current stateid. | |
1177 | */ | |
1178 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
1179 | memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) { | |
8bda4e4c | 1180 | write_seqlock(&state->seqlock); |
1ac7e2fd TM |
1181 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
1182 | memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)); | |
8bda4e4c | 1183 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1184 | } |
864472e9 TM |
1185 | return 0; |
1186 | } | |
1187 | ||
1da177e4 LT |
1188 | /* |
1189 | * OPEN_RECLAIM: | |
1190 | * reclaim state on the server after a reboot. | |
1da177e4 | 1191 | */ |
539cd03a | 1192 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1193 | { |
1ac7e2fd | 1194 | struct nfs_delegation *delegation; |
864472e9 | 1195 | struct nfs4_opendata *opendata; |
dc0b027d | 1196 | fmode_t delegation_type = 0; |
1da177e4 LT |
1197 | int status; |
1198 | ||
6f220ed5 TM |
1199 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1200 | if (IS_ERR(opendata)) | |
1201 | return PTR_ERR(opendata); | |
864472e9 TM |
1202 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1203 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1204 | rcu_read_lock(); |
1205 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1206 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1207 | delegation_type = delegation->type; |
1ac7e2fd | 1208 | rcu_read_unlock(); |
864472e9 TM |
1209 | opendata->o_arg.u.delegation_type = delegation_type; |
1210 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1211 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1212 | return status; |
1213 | } | |
1214 | ||
539cd03a | 1215 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1216 | { |
1217 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1218 | struct nfs4_exception exception = { }; | |
1219 | int err; | |
1220 | do { | |
539cd03a | 1221 | err = _nfs4_do_open_reclaim(ctx, state); |
168667c4 | 1222 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1223 | break; |
1224 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1225 | } while (exception.retry); |
1226 | return err; | |
1227 | } | |
1228 | ||
864472e9 TM |
1229 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1230 | { | |
1231 | struct nfs_open_context *ctx; | |
1232 | int ret; | |
1233 | ||
1234 | ctx = nfs4_state_find_open_context(state); | |
1235 | if (IS_ERR(ctx)) | |
1236 | return PTR_ERR(ctx); | |
539cd03a | 1237 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1238 | put_nfs_open_context(ctx); |
1239 | return ret; | |
1240 | } | |
1241 | ||
13437e12 | 1242 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1243 | { |
e56e0b78 | 1244 | struct nfs4_opendata *opendata; |
864472e9 | 1245 | int ret; |
1da177e4 | 1246 | |
6f220ed5 TM |
1247 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1248 | if (IS_ERR(opendata)) | |
1249 | return PTR_ERR(opendata); | |
e56e0b78 | 1250 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
13437e12 | 1251 | memcpy(opendata->o_arg.u.delegation.data, stateid->data, |
e56e0b78 | 1252 | sizeof(opendata->o_arg.u.delegation.data)); |
864472e9 | 1253 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1254 | nfs4_opendata_put(opendata); |
864472e9 | 1255 | return ret; |
1da177e4 LT |
1256 | } |
1257 | ||
13437e12 | 1258 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1259 | { |
1260 | struct nfs4_exception exception = { }; | |
539cd03a | 1261 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1262 | int err; |
1263 | do { | |
13437e12 | 1264 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1265 | switch (err) { |
1266 | case 0: | |
965b5d67 TM |
1267 | case -ENOENT: |
1268 | case -ESTALE: | |
1269 | goto out; | |
bcfa49f6 RL |
1270 | case -NFS4ERR_BADSESSION: |
1271 | case -NFS4ERR_BADSLOT: | |
1272 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1273 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1274 | case -NFS4ERR_DEADSESSION: | |
0400a6b0 | 1275 | nfs4_schedule_session_recovery(server->nfs_client->cl_session); |
bcfa49f6 | 1276 | goto out; |
1da177e4 LT |
1277 | case -NFS4ERR_STALE_CLIENTID: |
1278 | case -NFS4ERR_STALE_STATEID: | |
1279 | case -NFS4ERR_EXPIRED: | |
1280 | /* Don't recall a delegation if it was lost */ | |
0400a6b0 | 1281 | nfs4_schedule_lease_recovery(server->nfs_client); |
965b5d67 TM |
1282 | goto out; |
1283 | case -ERESTARTSYS: | |
1284 | /* | |
1285 | * The show must go on: exit, but mark the | |
1286 | * stateid as needing recovery. | |
1287 | */ | |
1288 | case -NFS4ERR_ADMIN_REVOKED: | |
1289 | case -NFS4ERR_BAD_STATEID: | |
0400a6b0 | 1290 | nfs4_schedule_stateid_recovery(server, state); |
168667c4 TM |
1291 | case -EKEYEXPIRED: |
1292 | /* | |
1293 | * User RPCSEC_GSS context has expired. | |
1294 | * We cannot recover this stateid now, so | |
1295 | * skip it and allow recovery thread to | |
1296 | * proceed. | |
1297 | */ | |
965b5d67 TM |
1298 | case -ENOMEM: |
1299 | err = 0; | |
1300 | goto out; | |
1da177e4 LT |
1301 | } |
1302 | err = nfs4_handle_exception(server, err, &exception); | |
1303 | } while (exception.retry); | |
965b5d67 | 1304 | out: |
1da177e4 LT |
1305 | return err; |
1306 | } | |
1307 | ||
cdd4e68b TM |
1308 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1309 | { | |
1310 | struct nfs4_opendata *data = calldata; | |
1311 | ||
1312 | data->rpc_status = task->tk_status; | |
26e976a8 | 1313 | if (data->rpc_status == 0) { |
cdd4e68b TM |
1314 | memcpy(data->o_res.stateid.data, data->c_res.stateid.data, |
1315 | sizeof(data->o_res.stateid.data)); | |
bb22629e | 1316 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1317 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1318 | data->rpc_done = 1; |
26e976a8 | 1319 | } |
cdd4e68b TM |
1320 | } |
1321 | ||
1322 | static void nfs4_open_confirm_release(void *calldata) | |
1323 | { | |
1324 | struct nfs4_opendata *data = calldata; | |
1325 | struct nfs4_state *state = NULL; | |
1326 | ||
1327 | /* If this request hasn't been cancelled, do nothing */ | |
1328 | if (data->cancelled == 0) | |
1329 | goto out_free; | |
1330 | /* In case of error, no cleanup! */ | |
3e309914 | 1331 | if (!data->rpc_done) |
cdd4e68b | 1332 | goto out_free; |
cdd4e68b | 1333 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1334 | if (!IS_ERR(state)) |
dc0b027d | 1335 | nfs4_close_state(&data->path, state, data->o_arg.fmode); |
cdd4e68b | 1336 | out_free: |
c6d00e63 | 1337 | nfs4_opendata_put(data); |
cdd4e68b TM |
1338 | } |
1339 | ||
1340 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1341 | .rpc_call_done = nfs4_open_confirm_done, |
1342 | .rpc_release = nfs4_open_confirm_release, | |
1343 | }; | |
1344 | ||
1345 | /* | |
1346 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1347 | */ | |
1348 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1349 | { | |
1350 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1351 | struct rpc_task *task; | |
5138fde0 TM |
1352 | struct rpc_message msg = { |
1353 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1354 | .rpc_argp = &data->c_arg, | |
1355 | .rpc_resp = &data->c_res, | |
1356 | .rpc_cred = data->owner->so_cred, | |
1357 | }; | |
c970aa85 TM |
1358 | struct rpc_task_setup task_setup_data = { |
1359 | .rpc_client = server->client, | |
5138fde0 | 1360 | .rpc_message = &msg, |
c970aa85 TM |
1361 | .callback_ops = &nfs4_open_confirm_ops, |
1362 | .callback_data = data, | |
101070ca | 1363 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1364 | .flags = RPC_TASK_ASYNC, |
1365 | }; | |
1da177e4 LT |
1366 | int status; |
1367 | ||
c6d00e63 | 1368 | kref_get(&data->kref); |
3e309914 TM |
1369 | data->rpc_done = 0; |
1370 | data->rpc_status = 0; | |
5138fde0 | 1371 | data->timestamp = jiffies; |
c970aa85 | 1372 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1373 | if (IS_ERR(task)) |
cdd4e68b | 1374 | return PTR_ERR(task); |
cdd4e68b TM |
1375 | status = nfs4_wait_for_completion_rpc_task(task); |
1376 | if (status != 0) { | |
1377 | data->cancelled = 1; | |
1378 | smp_wmb(); | |
1379 | } else | |
1380 | status = data->rpc_status; | |
e6b3c4db | 1381 | rpc_put_task(task); |
1da177e4 LT |
1382 | return status; |
1383 | } | |
1384 | ||
24ac23ab | 1385 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1386 | { |
24ac23ab TM |
1387 | struct nfs4_opendata *data = calldata; |
1388 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1389 | |
24ac23ab TM |
1390 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
1391 | return; | |
aac00a8d TM |
1392 | /* |
1393 | * Check if we still need to send an OPEN call, or if we can use | |
1394 | * a delegation instead. | |
1395 | */ | |
1396 | if (data->state != NULL) { | |
1397 | struct nfs_delegation *delegation; | |
1398 | ||
dc0b027d | 1399 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1400 | goto out_no_action; |
aac00a8d TM |
1401 | rcu_read_lock(); |
1402 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
1403 | if (delegation != NULL && | |
15c831bf | 1404 | test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) == 0) { |
aac00a8d | 1405 | rcu_read_unlock(); |
6ee41268 | 1406 | goto out_no_action; |
aac00a8d TM |
1407 | } |
1408 | rcu_read_unlock(); | |
1409 | } | |
24ac23ab | 1410 | /* Update sequence id. */ |
9f958ab8 | 1411 | data->o_arg.id = sp->so_owner_id.id; |
1f0e890d | 1412 | data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; |
6f220ed5 | 1413 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1414 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
6f220ed5 TM |
1415 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1416 | } | |
26e976a8 | 1417 | data->timestamp = jiffies; |
035168ab | 1418 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c AA |
1419 | &data->o_arg.seq_args, |
1420 | &data->o_res.seq_res, 1, task)) | |
1421 | return; | |
5138fde0 | 1422 | rpc_call_start(task); |
6ee41268 TM |
1423 | return; |
1424 | out_no_action: | |
1425 | task->tk_action = NULL; | |
1426 | ||
24ac23ab | 1427 | } |
1da177e4 | 1428 | |
b257957e AB |
1429 | static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata) |
1430 | { | |
1431 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
1432 | nfs4_open_prepare(task, calldata); | |
1433 | } | |
1434 | ||
24ac23ab TM |
1435 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1436 | { | |
1437 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1438 | |
24ac23ab | 1439 | data->rpc_status = task->tk_status; |
d898528c | 1440 | |
14516c3a TM |
1441 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1442 | return; | |
d898528c | 1443 | |
24ac23ab TM |
1444 | if (task->tk_status == 0) { |
1445 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1446 | case S_IFREG: |
1447 | break; | |
1448 | case S_IFLNK: | |
24ac23ab | 1449 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1450 | break; |
1451 | case S_IFDIR: | |
24ac23ab | 1452 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1453 | break; |
1454 | default: | |
24ac23ab | 1455 | data->rpc_status = -ENOTDIR; |
6f926b5b | 1456 | } |
26e976a8 | 1457 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1458 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1459 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1460 | } |
3e309914 | 1461 | data->rpc_done = 1; |
24ac23ab | 1462 | } |
6f926b5b | 1463 | |
24ac23ab TM |
1464 | static void nfs4_open_release(void *calldata) |
1465 | { | |
1466 | struct nfs4_opendata *data = calldata; | |
1467 | struct nfs4_state *state = NULL; | |
1468 | ||
1469 | /* If this request hasn't been cancelled, do nothing */ | |
1470 | if (data->cancelled == 0) | |
1471 | goto out_free; | |
1472 | /* In case of error, no cleanup! */ | |
3e309914 | 1473 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1474 | goto out_free; |
1475 | /* In case we need an open_confirm, no cleanup! */ | |
1476 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1477 | goto out_free; | |
24ac23ab | 1478 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1479 | if (!IS_ERR(state)) |
dc0b027d | 1480 | nfs4_close_state(&data->path, state, data->o_arg.fmode); |
24ac23ab | 1481 | out_free: |
c6d00e63 | 1482 | nfs4_opendata_put(data); |
24ac23ab TM |
1483 | } |
1484 | ||
1485 | static const struct rpc_call_ops nfs4_open_ops = { | |
1486 | .rpc_call_prepare = nfs4_open_prepare, | |
1487 | .rpc_call_done = nfs4_open_done, | |
1488 | .rpc_release = nfs4_open_release, | |
1489 | }; | |
1490 | ||
b257957e AB |
1491 | static const struct rpc_call_ops nfs4_recover_open_ops = { |
1492 | .rpc_call_prepare = nfs4_recover_open_prepare, | |
1493 | .rpc_call_done = nfs4_open_done, | |
1494 | .rpc_release = nfs4_open_release, | |
1495 | }; | |
1496 | ||
1497 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) | |
24ac23ab TM |
1498 | { |
1499 | struct inode *dir = data->dir->d_inode; | |
1500 | struct nfs_server *server = NFS_SERVER(dir); | |
1501 | struct nfs_openargs *o_arg = &data->o_arg; | |
1502 | struct nfs_openres *o_res = &data->o_res; | |
1503 | struct rpc_task *task; | |
5138fde0 TM |
1504 | struct rpc_message msg = { |
1505 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1506 | .rpc_argp = o_arg, | |
1507 | .rpc_resp = o_res, | |
1508 | .rpc_cred = data->owner->so_cred, | |
1509 | }; | |
c970aa85 TM |
1510 | struct rpc_task_setup task_setup_data = { |
1511 | .rpc_client = server->client, | |
5138fde0 | 1512 | .rpc_message = &msg, |
c970aa85 TM |
1513 | .callback_ops = &nfs4_open_ops, |
1514 | .callback_data = data, | |
101070ca | 1515 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1516 | .flags = RPC_TASK_ASYNC, |
1517 | }; | |
24ac23ab TM |
1518 | int status; |
1519 | ||
c6d00e63 | 1520 | kref_get(&data->kref); |
3e309914 TM |
1521 | data->rpc_done = 0; |
1522 | data->rpc_status = 0; | |
2ced46c2 | 1523 | data->cancelled = 0; |
b257957e AB |
1524 | if (isrecover) |
1525 | task_setup_data.callback_ops = &nfs4_recover_open_ops; | |
c970aa85 | 1526 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1527 | if (IS_ERR(task)) |
1528 | return PTR_ERR(task); | |
1529 | status = nfs4_wait_for_completion_rpc_task(task); | |
1530 | if (status != 0) { | |
1531 | data->cancelled = 1; | |
1532 | smp_wmb(); | |
1533 | } else | |
1534 | status = data->rpc_status; | |
1535 | rpc_put_task(task); | |
1536 | ||
1537 | return status; | |
1538 | } | |
1539 | ||
1540 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1541 | { | |
1542 | struct inode *dir = data->dir->d_inode; | |
1543 | struct nfs_openres *o_res = &data->o_res; | |
1544 | int status; | |
1545 | ||
1546 | status = nfs4_run_open_task(data, 1); | |
1547 | if (status != 0 || !data->rpc_done) | |
1548 | return status; | |
1549 | ||
1550 | nfs_refresh_inode(dir, o_res->dir_attr); | |
1551 | ||
1552 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { | |
1553 | status = _nfs4_proc_open_confirm(data); | |
1554 | if (status != 0) | |
1555 | return status; | |
1556 | } | |
1557 | ||
1558 | return status; | |
1559 | } | |
1560 | ||
1561 | /* | |
1562 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1563 | */ | |
1564 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1565 | { | |
1566 | struct inode *dir = data->dir->d_inode; | |
1567 | struct nfs_server *server = NFS_SERVER(dir); | |
1568 | struct nfs_openargs *o_arg = &data->o_arg; | |
1569 | struct nfs_openres *o_res = &data->o_res; | |
1570 | int status; | |
1571 | ||
1572 | status = nfs4_run_open_task(data, 0); | |
3e309914 | 1573 | if (status != 0 || !data->rpc_done) |
24ac23ab TM |
1574 | return status; |
1575 | ||
56ae19f3 TM |
1576 | if (o_arg->open_flags & O_CREAT) { |
1577 | update_changeattr(dir, &o_res->cinfo); | |
1578 | nfs_post_op_update_inode(dir, o_res->dir_attr); | |
1579 | } else | |
1580 | nfs_refresh_inode(dir, o_res->dir_attr); | |
0df5dd4a TM |
1581 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1582 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1583 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1584 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1585 | if (status != 0) |
24ac23ab | 1586 | return status; |
1da177e4 LT |
1587 | } |
1588 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1589 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1590 | return 0; |
1da177e4 LT |
1591 | } |
1592 | ||
d83217c1 | 1593 | static int nfs4_client_recover_expired_lease(struct nfs_client *clp) |
58d9714a | 1594 | { |
a78cb57a | 1595 | unsigned int loop; |
6b30954e | 1596 | int ret; |
58d9714a | 1597 | |
a78cb57a | 1598 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { |
65de872e | 1599 | ret = nfs4_wait_clnt_recover(clp); |
6b30954e | 1600 | if (ret != 0) |
a78cb57a | 1601 | break; |
e598d843 TM |
1602 | if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) && |
1603 | !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state)) | |
6b30954e | 1604 | break; |
0400a6b0 | 1605 | nfs4_schedule_state_manager(clp); |
a78cb57a | 1606 | ret = -EIO; |
6b30954e | 1607 | } |
a78cb57a | 1608 | return ret; |
58d9714a TM |
1609 | } |
1610 | ||
d83217c1 AA |
1611 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1612 | { | |
1613 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1614 | } | |
1615 | ||
1da177e4 LT |
1616 | /* |
1617 | * OPEN_EXPIRED: | |
1618 | * reclaim state on the server after a network partition. | |
1619 | * Assumes caller holds the appropriate lock | |
1620 | */ | |
539cd03a | 1621 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1622 | { |
e56e0b78 | 1623 | struct nfs4_opendata *opendata; |
864472e9 | 1624 | int ret; |
1da177e4 | 1625 | |
6f220ed5 TM |
1626 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1627 | if (IS_ERR(opendata)) | |
1628 | return PTR_ERR(opendata); | |
864472e9 | 1629 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1630 | if (ret == -ESTALE) |
539cd03a | 1631 | d_drop(ctx->path.dentry); |
c6d00e63 | 1632 | nfs4_opendata_put(opendata); |
864472e9 | 1633 | return ret; |
1da177e4 LT |
1634 | } |
1635 | ||
a9ed2e25 | 1636 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1637 | { |
539cd03a | 1638 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1639 | struct nfs4_exception exception = { }; |
1640 | int err; | |
1641 | ||
1642 | do { | |
539cd03a | 1643 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1644 | switch (err) { |
1645 | default: | |
1646 | goto out; | |
1647 | case -NFS4ERR_GRACE: | |
1648 | case -NFS4ERR_DELAY: | |
1649 | nfs4_handle_exception(server, err, &exception); | |
1650 | err = 0; | |
1651 | } | |
202b50dc | 1652 | } while (exception.retry); |
a9ed2e25 | 1653 | out: |
202b50dc TM |
1654 | return err; |
1655 | } | |
1656 | ||
1da177e4 LT |
1657 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1658 | { | |
1da177e4 | 1659 | struct nfs_open_context *ctx; |
864472e9 | 1660 | int ret; |
1da177e4 | 1661 | |
864472e9 TM |
1662 | ctx = nfs4_state_find_open_context(state); |
1663 | if (IS_ERR(ctx)) | |
1664 | return PTR_ERR(ctx); | |
539cd03a | 1665 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1666 | put_nfs_open_context(ctx); |
1667 | return ret; | |
1da177e4 LT |
1668 | } |
1669 | ||
aa53ed54 JL |
1670 | /* |
1671 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1672 | * fields corresponding to attributes that were used to store the verifier. | |
1673 | * Make sure we clobber those fields in the later setattr call | |
1674 | */ | |
1675 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1676 | { | |
1677 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1678 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1679 | sattr->ia_valid |= ATTR_ATIME; | |
1680 | ||
1681 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1682 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1683 | sattr->ia_valid |= ATTR_MTIME; | |
1684 | } | |
1685 | ||
1da177e4 | 1686 | /* |
24ac23ab | 1687 | * Returns a referenced nfs4_state |
1da177e4 | 1688 | */ |
dc0b027d | 1689 | static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res) |
1da177e4 LT |
1690 | { |
1691 | struct nfs4_state_owner *sp; | |
1692 | struct nfs4_state *state = NULL; | |
1693 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1694 | struct nfs4_opendata *opendata; |
aac00a8d | 1695 | int status; |
1da177e4 LT |
1696 | |
1697 | /* Protect against reboot recovery conflicts */ | |
1da177e4 LT |
1698 | status = -ENOMEM; |
1699 | if (!(sp = nfs4_get_state_owner(server, cred))) { | |
1700 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); | |
1701 | goto out_err; | |
1702 | } | |
58d9714a TM |
1703 | status = nfs4_recover_expired_lease(server); |
1704 | if (status != 0) | |
b4454fe1 | 1705 | goto err_put_state_owner; |
aac00a8d | 1706 | if (path->dentry->d_inode != NULL) |
dc0b027d | 1707 | nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode); |
58d9714a | 1708 | status = -ENOMEM; |
8535b2be | 1709 | opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr, GFP_KERNEL); |
e56e0b78 | 1710 | if (opendata == NULL) |
95d35cb4 | 1711 | goto err_put_state_owner; |
1da177e4 | 1712 | |
aac00a8d TM |
1713 | if (path->dentry->d_inode != NULL) |
1714 | opendata->state = nfs4_get_open_state(path->dentry->d_inode, sp); | |
1715 | ||
24ac23ab | 1716 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1717 | if (status != 0) |
c6d00e63 | 1718 | goto err_opendata_put; |
1da177e4 | 1719 | |
24ac23ab | 1720 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1721 | status = PTR_ERR(state); |
1722 | if (IS_ERR(state)) | |
c6d00e63 | 1723 | goto err_opendata_put; |
0df5dd4a | 1724 | if (server->caps & NFS_CAP_POSIX_LOCK) |
8e469ebd | 1725 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); |
0ab64e0e TM |
1726 | |
1727 | if (opendata->o_arg.open_flags & O_EXCL) { | |
1728 | nfs4_exclusive_attrset(opendata, sattr); | |
1729 | ||
1730 | nfs_fattr_init(opendata->o_res.f_attr); | |
1731 | status = nfs4_do_setattr(state->inode, cred, | |
1732 | opendata->o_res.f_attr, sattr, | |
1733 | state); | |
1734 | if (status == 0) | |
1735 | nfs_setattr_update_inode(state->inode, sattr); | |
1736 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
1737 | } | |
c6d00e63 | 1738 | nfs4_opendata_put(opendata); |
1da177e4 | 1739 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1740 | *res = state; |
1741 | return 0; | |
c6d00e63 TM |
1742 | err_opendata_put: |
1743 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
1744 | err_put_state_owner: |
1745 | nfs4_put_state_owner(sp); | |
1da177e4 | 1746 | out_err: |
1da177e4 LT |
1747 | *res = NULL; |
1748 | return status; | |
1749 | } | |
1750 | ||
1751 | ||
dc0b027d | 1752 | static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, int flags, struct iattr *sattr, struct rpc_cred *cred) |
1da177e4 LT |
1753 | { |
1754 | struct nfs4_exception exception = { }; | |
1755 | struct nfs4_state *res; | |
1756 | int status; | |
1757 | ||
1758 | do { | |
dc0b027d | 1759 | status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res); |
1da177e4 LT |
1760 | if (status == 0) |
1761 | break; | |
1762 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1763 | * book-keeping w.r.t. state-changing operations | |
1764 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1765 | * It is actually a sign of a bug on the client or on the server. | |
1766 | * | |
1767 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1768 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1769 | * have unhashed the old state_owner for us, and that we can |
1770 | * therefore safely retry using a new one. We should still warn | |
1771 | * the user though... | |
1772 | */ | |
1773 | if (status == -NFS4ERR_BAD_SEQID) { | |
6f43ddcc TM |
1774 | printk(KERN_WARNING "NFS: v4 server %s " |
1775 | " returned a bad sequence-id error!\n", | |
1776 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1777 | exception.retry = 1; |
1778 | continue; | |
1779 | } | |
550f5747 TM |
1780 | /* |
1781 | * BAD_STATEID on OPEN means that the server cancelled our | |
1782 | * state before it received the OPEN_CONFIRM. | |
1783 | * Recover by retrying the request as per the discussion | |
1784 | * on Page 181 of RFC3530. | |
1785 | */ | |
1786 | if (status == -NFS4ERR_BAD_STATEID) { | |
1787 | exception.retry = 1; | |
1788 | continue; | |
1789 | } | |
aac00a8d TM |
1790 | if (status == -EAGAIN) { |
1791 | /* We must have found a delegation */ | |
1792 | exception.retry = 1; | |
1793 | continue; | |
1794 | } | |
1da177e4 LT |
1795 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1796 | status, &exception)); | |
1797 | } while (exception.retry); | |
1798 | return res; | |
1799 | } | |
1800 | ||
659bfcd6 TM |
1801 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1802 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1803 | struct nfs4_state *state) | |
1da177e4 | 1804 | { |
3e4f6290 | 1805 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1806 | struct nfs_setattrargs arg = { |
3e4f6290 | 1807 | .fh = NFS_FH(inode), |
1da177e4 LT |
1808 | .iap = sattr, |
1809 | .server = server, | |
1810 | .bitmask = server->attr_bitmask, | |
1811 | }; | |
1812 | struct nfs_setattrres res = { | |
1813 | .fattr = fattr, | |
1814 | .server = server, | |
1815 | }; | |
1816 | struct rpc_message msg = { | |
659bfcd6 TM |
1817 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
1818 | .rpc_argp = &arg, | |
1819 | .rpc_resp = &res, | |
1820 | .rpc_cred = cred, | |
1da177e4 | 1821 | }; |
26e976a8 | 1822 | unsigned long timestamp = jiffies; |
65e4308d | 1823 | int status; |
1da177e4 | 1824 | |
0e574af1 | 1825 | nfs_fattr_init(fattr); |
1da177e4 | 1826 | |
3e4f6290 TM |
1827 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) { |
1828 | /* Use that stateid */ | |
1829 | } else if (state != NULL) { | |
77041ed9 | 1830 | nfs4_copy_stateid(&arg.stateid, state, current->files, current->tgid); |
08e9eac4 | 1831 | } else |
1da177e4 LT |
1832 | memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid)); |
1833 | ||
cccef3b9 | 1834 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
26e976a8 TM |
1835 | if (status == 0 && state != NULL) |
1836 | renew_lease(server, timestamp); | |
65e4308d | 1837 | return status; |
1da177e4 LT |
1838 | } |
1839 | ||
659bfcd6 TM |
1840 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1841 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1842 | struct nfs4_state *state) | |
1da177e4 | 1843 | { |
3e4f6290 | 1844 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
1845 | struct nfs4_exception exception = { }; |
1846 | int err; | |
1847 | do { | |
1848 | err = nfs4_handle_exception(server, | |
659bfcd6 | 1849 | _nfs4_do_setattr(inode, cred, fattr, sattr, state), |
1da177e4 LT |
1850 | &exception); |
1851 | } while (exception.retry); | |
1852 | return err; | |
1853 | } | |
1854 | ||
1855 | struct nfs4_closedata { | |
4a35bd41 | 1856 | struct path path; |
1da177e4 LT |
1857 | struct inode *inode; |
1858 | struct nfs4_state *state; | |
1859 | struct nfs_closeargs arg; | |
1860 | struct nfs_closeres res; | |
516a6af6 | 1861 | struct nfs_fattr fattr; |
26e976a8 | 1862 | unsigned long timestamp; |
f7e8917a FI |
1863 | bool roc; |
1864 | u32 roc_barrier; | |
1da177e4 LT |
1865 | }; |
1866 | ||
963d8fe5 | 1867 | static void nfs4_free_closedata(void *data) |
9512135d | 1868 | { |
963d8fe5 TM |
1869 | struct nfs4_closedata *calldata = data; |
1870 | struct nfs4_state_owner *sp = calldata->state->owner; | |
9512135d | 1871 | |
f7e8917a FI |
1872 | if (calldata->roc) |
1873 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
1874 | nfs4_put_open_state(calldata->state); |
1875 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 1876 | nfs4_put_state_owner(sp); |
31f31db1 | 1877 | path_put(&calldata->path); |
9512135d TM |
1878 | kfree(calldata); |
1879 | } | |
1880 | ||
88069f77 TM |
1881 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
1882 | fmode_t fmode) | |
1883 | { | |
1884 | spin_lock(&state->owner->so_lock); | |
1885 | if (!(fmode & FMODE_READ)) | |
1886 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1887 | if (!(fmode & FMODE_WRITE)) | |
1888 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1889 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1890 | spin_unlock(&state->owner->so_lock); | |
1891 | } | |
1892 | ||
963d8fe5 | 1893 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 1894 | { |
963d8fe5 | 1895 | struct nfs4_closedata *calldata = data; |
1da177e4 | 1896 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
1897 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
1898 | ||
14516c3a TM |
1899 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
1900 | return; | |
1da177e4 LT |
1901 | /* hmm. we are done with the inode, and in the process of freeing |
1902 | * the state_owner. we keep this around to process errors | |
1903 | */ | |
1da177e4 LT |
1904 | switch (task->tk_status) { |
1905 | case 0: | |
f7e8917a FI |
1906 | if (calldata->roc) |
1907 | pnfs_roc_set_barrier(state->inode, | |
1908 | calldata->roc_barrier); | |
45328c35 | 1909 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 1910 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
1911 | nfs4_close_clear_stateid_flags(state, |
1912 | calldata->arg.fmode); | |
1da177e4 LT |
1913 | break; |
1914 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
1915 | case -NFS4ERR_OLD_STATEID: |
1916 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 1917 | case -NFS4ERR_EXPIRED: |
dc0b027d | 1918 | if (calldata->arg.fmode == 0) |
9e33bed5 | 1919 | break; |
1da177e4 | 1920 | default: |
72211dbe TM |
1921 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
1922 | rpc_restart_call_prepare(task); | |
1da177e4 | 1923 | } |
72211dbe | 1924 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 1925 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
1da177e4 LT |
1926 | } |
1927 | ||
4ce70ada | 1928 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 1929 | { |
4ce70ada | 1930 | struct nfs4_closedata *calldata = data; |
9512135d | 1931 | struct nfs4_state *state = calldata->state; |
88069f77 | 1932 | int call_close = 0; |
9512135d | 1933 | |
963d8fe5 | 1934 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 1935 | return; |
003707c7 | 1936 | |
88069f77 TM |
1937 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
1938 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 1939 | spin_lock(&state->owner->so_lock); |
003707c7 | 1940 | /* Calculate the change in open mode */ |
e7616923 | 1941 | if (state->n_rdwr == 0) { |
003707c7 | 1942 | if (state->n_rdonly == 0) { |
88069f77 TM |
1943 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
1944 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
1945 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
1946 | } |
1947 | if (state->n_wronly == 0) { | |
88069f77 TM |
1948 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
1949 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
1950 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 1951 | } |
e7616923 | 1952 | } |
4cecb76f | 1953 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
1954 | |
1955 | if (!call_close) { | |
963d8fe5 TM |
1956 | /* Note: exit _without_ calling nfs4_close_done */ |
1957 | task->tk_action = NULL; | |
9512135d TM |
1958 | return; |
1959 | } | |
88069f77 | 1960 | |
f7e8917a | 1961 | if (calldata->arg.fmode == 0) { |
88069f77 | 1962 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a FI |
1963 | if (calldata->roc && |
1964 | pnfs_roc_drain(calldata->inode, &calldata->roc_barrier)) { | |
1965 | rpc_sleep_on(&NFS_SERVER(calldata->inode)->roc_rpcwaitq, | |
1966 | task, NULL); | |
1967 | return; | |
1968 | } | |
1969 | } | |
88069f77 | 1970 | |
516a6af6 | 1971 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 1972 | calldata->timestamp = jiffies; |
035168ab | 1973 | if (nfs4_setup_sequence(NFS_SERVER(calldata->inode), |
19ddab06 AA |
1974 | &calldata->arg.seq_args, &calldata->res.seq_res, |
1975 | 1, task)) | |
1976 | return; | |
5138fde0 | 1977 | rpc_call_start(task); |
1da177e4 LT |
1978 | } |
1979 | ||
963d8fe5 | 1980 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 1981 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
1982 | .rpc_call_done = nfs4_close_done, |
1983 | .rpc_release = nfs4_free_closedata, | |
1984 | }; | |
1985 | ||
1da177e4 LT |
1986 | /* |
1987 | * It is possible for data to be read/written from a mem-mapped file | |
1988 | * after the sys_close call (which hits the vfs layer as a flush). | |
1989 | * This means that we can't safely call nfsv4 close on a file until | |
1990 | * the inode is cleared. This in turn means that we are not good | |
1991 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
1992 | * share state even when we are done with one of the three share | |
1993 | * stateid's in the inode. | |
1994 | * | |
1995 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
1996 | */ | |
f7e8917a | 1997 | int nfs4_do_close(struct path *path, struct nfs4_state *state, gfp_t gfp_mask, int wait, bool roc) |
1da177e4 | 1998 | { |
4a35bd41 | 1999 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2000 | struct nfs4_closedata *calldata; |
b39e625b TM |
2001 | struct nfs4_state_owner *sp = state->owner; |
2002 | struct rpc_task *task; | |
5138fde0 TM |
2003 | struct rpc_message msg = { |
2004 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2005 | .rpc_cred = state->owner->so_cred, | |
2006 | }; | |
c970aa85 TM |
2007 | struct rpc_task_setup task_setup_data = { |
2008 | .rpc_client = server->client, | |
5138fde0 | 2009 | .rpc_message = &msg, |
c970aa85 | 2010 | .callback_ops = &nfs4_close_ops, |
101070ca | 2011 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2012 | .flags = RPC_TASK_ASYNC, |
2013 | }; | |
9512135d | 2014 | int status = -ENOMEM; |
1da177e4 | 2015 | |
8535b2be | 2016 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2017 | if (calldata == NULL) |
9512135d | 2018 | goto out; |
4a35bd41 | 2019 | calldata->inode = state->inode; |
1da177e4 | 2020 | calldata->state = state; |
4a35bd41 | 2021 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2022 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2023 | /* Serialization for the sequence id */ |
8535b2be | 2024 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2025 | if (calldata->arg.seqid == NULL) |
2026 | goto out_free_calldata; | |
dc0b027d | 2027 | calldata->arg.fmode = 0; |
a65318bf | 2028 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2029 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2030 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2031 | calldata->res.server = server; |
f7e8917a | 2032 | calldata->roc = roc; |
f6948697 AV |
2033 | path_get(path); |
2034 | calldata->path = *path; | |
9512135d | 2035 | |
1174dd1f TM |
2036 | msg.rpc_argp = &calldata->arg; |
2037 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2038 | task_setup_data.callback_data = calldata; |
2039 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2040 | if (IS_ERR(task)) |
2041 | return PTR_ERR(task); | |
a49c3c77 TM |
2042 | status = 0; |
2043 | if (wait) | |
2044 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2045 | rpc_put_task(task); |
a49c3c77 | 2046 | return status; |
9512135d TM |
2047 | out_free_calldata: |
2048 | kfree(calldata); | |
2049 | out: | |
f7e8917a FI |
2050 | if (roc) |
2051 | pnfs_roc_release(state->inode); | |
b39e625b TM |
2052 | nfs4_put_open_state(state); |
2053 | nfs4_put_state_owner(sp); | |
9512135d | 2054 | return status; |
1da177e4 LT |
2055 | } |
2056 | ||
2b484297 | 2057 | static struct inode * |
cd9a1c0e | 2058 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2059 | { |
1da177e4 | 2060 | struct nfs4_state *state; |
1da177e4 | 2061 | |
565277f6 | 2062 | /* Protect against concurrent sillydeletes */ |
cd9a1c0e | 2063 | state = nfs4_do_open(dir, &ctx->path, ctx->mode, open_flags, attr, ctx->cred); |
f46e0bd3 TM |
2064 | if (IS_ERR(state)) |
2065 | return ERR_CAST(state); | |
cd9a1c0e | 2066 | ctx->state = state; |
f46e0bd3 | 2067 | return igrab(state->inode); |
1da177e4 LT |
2068 | } |
2069 | ||
1185a552 | 2070 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2071 | { |
2072 | if (ctx->state == NULL) | |
2073 | return; | |
2074 | if (is_sync) | |
2075 | nfs4_close_sync(&ctx->path, ctx->state, ctx->mode); | |
2076 | else | |
2077 | nfs4_close_state(&ctx->path, ctx->state, ctx->mode); | |
2078 | } | |
1da177e4 LT |
2079 | |
2080 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2081 | { | |
43652ad5 BH |
2082 | struct nfs4_server_caps_arg args = { |
2083 | .fhandle = fhandle, | |
2084 | }; | |
1da177e4 LT |
2085 | struct nfs4_server_caps_res res = {}; |
2086 | struct rpc_message msg = { | |
2087 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2088 | .rpc_argp = &args, |
1da177e4 LT |
2089 | .rpc_resp = &res, |
2090 | }; | |
2091 | int status; | |
2092 | ||
cccef3b9 | 2093 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2094 | if (status == 0) { |
2095 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2096 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2097 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2098 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2099 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2100 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2101 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2102 | server->caps |= NFS_CAP_ACLS; | |
2103 | if (res.has_links != 0) | |
2104 | server->caps |= NFS_CAP_HARDLINKS; | |
2105 | if (res.has_symlinks != 0) | |
2106 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2107 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2108 | server->caps |= NFS_CAP_FILEID; | |
2109 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2110 | server->caps |= NFS_CAP_MODE; | |
2111 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2112 | server->caps |= NFS_CAP_NLINK; | |
2113 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2114 | server->caps |= NFS_CAP_OWNER; | |
2115 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2116 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2117 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2118 | server->caps |= NFS_CAP_ATIME; | |
2119 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2120 | server->caps |= NFS_CAP_CTIME; | |
2121 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2122 | server->caps |= NFS_CAP_MTIME; | |
2123 | ||
a65318bf TM |
2124 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2125 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2126 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 LT |
2127 | server->acl_bitmask = res.acl_bitmask; |
2128 | } | |
cccef3b9 | 2129 | |
1da177e4 LT |
2130 | return status; |
2131 | } | |
2132 | ||
55a97593 | 2133 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2134 | { |
2135 | struct nfs4_exception exception = { }; | |
2136 | int err; | |
2137 | do { | |
2138 | err = nfs4_handle_exception(server, | |
2139 | _nfs4_server_capabilities(server, fhandle), | |
2140 | &exception); | |
2141 | } while (exception.retry); | |
2142 | return err; | |
2143 | } | |
2144 | ||
2145 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2146 | struct nfs_fsinfo *info) | |
2147 | { | |
1da177e4 LT |
2148 | struct nfs4_lookup_root_arg args = { |
2149 | .bitmask = nfs4_fattr_bitmap, | |
2150 | }; | |
2151 | struct nfs4_lookup_res res = { | |
2152 | .server = server, | |
0e574af1 | 2153 | .fattr = info->fattr, |
1da177e4 LT |
2154 | .fh = fhandle, |
2155 | }; | |
2156 | struct rpc_message msg = { | |
2157 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2158 | .rpc_argp = &args, | |
2159 | .rpc_resp = &res, | |
2160 | }; | |
008f55d0 | 2161 | |
0e574af1 | 2162 | nfs_fattr_init(info->fattr); |
fccba804 | 2163 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2164 | } |
2165 | ||
2166 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2167 | struct nfs_fsinfo *info) | |
2168 | { | |
2169 | struct nfs4_exception exception = { }; | |
2170 | int err; | |
2171 | do { | |
2172 | err = nfs4_handle_exception(server, | |
2173 | _nfs4_lookup_root(server, fhandle, info), | |
2174 | &exception); | |
2175 | } while (exception.retry); | |
2176 | return err; | |
2177 | } | |
2178 | ||
54ceac45 DH |
2179 | /* |
2180 | * get the file handle for the "/" directory on the server | |
2181 | */ | |
1da177e4 | 2182 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2183 | struct nfs_fsinfo *info) |
1da177e4 | 2184 | { |
1da177e4 LT |
2185 | int status; |
2186 | ||
1da177e4 | 2187 | status = nfs4_lookup_root(server, fhandle, info); |
1da177e4 LT |
2188 | if (status == 0) |
2189 | status = nfs4_server_capabilities(server, fhandle); | |
2190 | if (status == 0) | |
2191 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2192 | return nfs4_map_errors(status); |
1da177e4 LT |
2193 | } |
2194 | ||
6b97fd3d MN |
2195 | /* |
2196 | * Get locations and (maybe) other attributes of a referral. | |
2197 | * Note that we'll actually follow the referral later when | |
2198 | * we detect fsid mismatch in inode revalidation | |
2199 | */ | |
56659e99 | 2200 | static int nfs4_get_referral(struct inode *dir, const struct qstr *name, struct nfs_fattr *fattr, struct nfs_fh *fhandle) |
6b97fd3d MN |
2201 | { |
2202 | int status = -ENOMEM; | |
2203 | struct page *page = NULL; | |
2204 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2205 | |
2206 | page = alloc_page(GFP_KERNEL); | |
2207 | if (page == NULL) | |
2208 | goto out; | |
2209 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2210 | if (locations == NULL) | |
2211 | goto out; | |
2212 | ||
c228fd3a | 2213 | status = nfs4_proc_fs_locations(dir, name, locations, page); |
6b97fd3d MN |
2214 | if (status != 0) |
2215 | goto out; | |
2216 | /* Make sure server returned a different fsid for the referral */ | |
2217 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
3110ff80 | 2218 | dprintk("%s: server did not return a different fsid for a referral at %s\n", __func__, name->name); |
6b97fd3d MN |
2219 | status = -EIO; |
2220 | goto out; | |
2221 | } | |
2222 | ||
2223 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); | |
2224 | fattr->valid |= NFS_ATTR_FATTR_V4_REFERRAL; | |
2225 | if (!fattr->mode) | |
2226 | fattr->mode = S_IFDIR; | |
2227 | memset(fhandle, 0, sizeof(struct nfs_fh)); | |
2228 | out: | |
2229 | if (page) | |
2230 | __free_page(page); | |
5d7ca35a | 2231 | kfree(locations); |
6b97fd3d MN |
2232 | return status; |
2233 | } | |
2234 | ||
1da177e4 LT |
2235 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2236 | { | |
2237 | struct nfs4_getattr_arg args = { | |
2238 | .fh = fhandle, | |
2239 | .bitmask = server->attr_bitmask, | |
2240 | }; | |
2241 | struct nfs4_getattr_res res = { | |
2242 | .fattr = fattr, | |
2243 | .server = server, | |
2244 | }; | |
2245 | struct rpc_message msg = { | |
2246 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2247 | .rpc_argp = &args, | |
2248 | .rpc_resp = &res, | |
2249 | }; | |
2250 | ||
0e574af1 | 2251 | nfs_fattr_init(fattr); |
cccef3b9 | 2252 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2253 | } |
2254 | ||
2255 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2256 | { | |
2257 | struct nfs4_exception exception = { }; | |
2258 | int err; | |
2259 | do { | |
2260 | err = nfs4_handle_exception(server, | |
2261 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2262 | &exception); | |
2263 | } while (exception.retry); | |
2264 | return err; | |
2265 | } | |
2266 | ||
2267 | /* | |
2268 | * The file is not closed if it is opened due to the a request to change | |
2269 | * the size of the file. The open call will not be needed once the | |
2270 | * VFS layer lookup-intents are implemented. | |
2271 | * | |
2272 | * Close is called when the inode is destroyed. | |
2273 | * If we haven't opened the file for O_WRONLY, we | |
2274 | * need to in the size_change case to obtain a stateid. | |
2275 | * | |
2276 | * Got race? | |
2277 | * Because OPEN is always done by name in nfsv4, it is | |
2278 | * possible that we opened a different file by the same | |
2279 | * name. We can recognize this race condition, but we | |
2280 | * can't do anything about it besides returning an error. | |
2281 | * | |
2282 | * This will be fixed with VFS changes (lookup-intent). | |
2283 | */ | |
2284 | static int | |
2285 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2286 | struct iattr *sattr) | |
2287 | { | |
08e9eac4 | 2288 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2289 | struct rpc_cred *cred = NULL; |
d530838b | 2290 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2291 | int status; |
2292 | ||
0e574af1 | 2293 | nfs_fattr_init(fattr); |
1da177e4 | 2294 | |
d530838b | 2295 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2296 | if (sattr->ia_valid & ATTR_FILE) { |
2297 | struct nfs_open_context *ctx; | |
2298 | ||
2299 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2300 | if (ctx) { |
2301 | cred = ctx->cred; | |
2302 | state = ctx->state; | |
2303 | } | |
659bfcd6 | 2304 | } |
08e9eac4 | 2305 | |
659bfcd6 | 2306 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2307 | if (status == 0) |
2308 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2309 | return status; |
2310 | } | |
2311 | ||
56659e99 TM |
2312 | static int _nfs4_proc_lookupfh(struct nfs_server *server, const struct nfs_fh *dirfh, |
2313 | const struct qstr *name, struct nfs_fh *fhandle, | |
2b3de441 DH |
2314 | struct nfs_fattr *fattr) |
2315 | { | |
2316 | int status; | |
2317 | struct nfs4_lookup_arg args = { | |
2318 | .bitmask = server->attr_bitmask, | |
2319 | .dir_fh = dirfh, | |
2320 | .name = name, | |
2321 | }; | |
2322 | struct nfs4_lookup_res res = { | |
2323 | .server = server, | |
2324 | .fattr = fattr, | |
2325 | .fh = fhandle, | |
2326 | }; | |
2327 | struct rpc_message msg = { | |
2328 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2329 | .rpc_argp = &args, | |
2330 | .rpc_resp = &res, | |
2331 | }; | |
2332 | ||
2333 | nfs_fattr_init(fattr); | |
2334 | ||
2335 | dprintk("NFS call lookupfh %s\n", name->name); | |
cccef3b9 | 2336 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
2b3de441 | 2337 | dprintk("NFS reply lookupfh: %d\n", status); |
2b3de441 DH |
2338 | return status; |
2339 | } | |
2340 | ||
2341 | static int nfs4_proc_lookupfh(struct nfs_server *server, struct nfs_fh *dirfh, | |
2342 | struct qstr *name, struct nfs_fh *fhandle, | |
2343 | struct nfs_fattr *fattr) | |
2344 | { | |
2345 | struct nfs4_exception exception = { }; | |
2346 | int err; | |
2347 | do { | |
4e56e082 TM |
2348 | err = _nfs4_proc_lookupfh(server, dirfh, name, fhandle, fattr); |
2349 | /* FIXME: !!!! */ | |
2350 | if (err == -NFS4ERR_MOVED) { | |
2351 | err = -EREMOTE; | |
2352 | break; | |
2353 | } | |
2354 | err = nfs4_handle_exception(server, err, &exception); | |
2b3de441 DH |
2355 | } while (exception.retry); |
2356 | return err; | |
2357 | } | |
2358 | ||
56659e99 | 2359 | static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, |
1da177e4 LT |
2360 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2361 | { | |
4e56e082 | 2362 | int status; |
1da177e4 LT |
2363 | |
2364 | dprintk("NFS call lookup %s\n", name->name); | |
4e56e082 | 2365 | status = _nfs4_proc_lookupfh(NFS_SERVER(dir), NFS_FH(dir), name, fhandle, fattr); |
6b97fd3d MN |
2366 | if (status == -NFS4ERR_MOVED) |
2367 | status = nfs4_get_referral(dir, name, fattr, fhandle); | |
1da177e4 LT |
2368 | dprintk("NFS reply lookup: %d\n", status); |
2369 | return status; | |
2370 | } | |
2371 | ||
2372 | static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2373 | { | |
2374 | struct nfs4_exception exception = { }; | |
2375 | int err; | |
2376 | do { | |
2377 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2378 | _nfs4_proc_lookup(dir, name, fhandle, fattr), | |
2379 | &exception); | |
2380 | } while (exception.retry); | |
2381 | return err; | |
2382 | } | |
2383 | ||
2384 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2385 | { | |
76b32999 | 2386 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2387 | struct nfs4_accessargs args = { |
2388 | .fh = NFS_FH(inode), | |
76b32999 TM |
2389 | .bitmask = server->attr_bitmask, |
2390 | }; | |
2391 | struct nfs4_accessres res = { | |
2392 | .server = server, | |
1da177e4 | 2393 | }; |
1da177e4 LT |
2394 | struct rpc_message msg = { |
2395 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2396 | .rpc_argp = &args, | |
2397 | .rpc_resp = &res, | |
2398 | .rpc_cred = entry->cred, | |
2399 | }; | |
2400 | int mode = entry->mask; | |
2401 | int status; | |
2402 | ||
2403 | /* | |
2404 | * Determine which access bits we want to ask for... | |
2405 | */ | |
2406 | if (mode & MAY_READ) | |
2407 | args.access |= NFS4_ACCESS_READ; | |
2408 | if (S_ISDIR(inode->i_mode)) { | |
2409 | if (mode & MAY_WRITE) | |
2410 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2411 | if (mode & MAY_EXEC) | |
2412 | args.access |= NFS4_ACCESS_LOOKUP; | |
2413 | } else { | |
2414 | if (mode & MAY_WRITE) | |
2415 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2416 | if (mode & MAY_EXEC) | |
2417 | args.access |= NFS4_ACCESS_EXECUTE; | |
2418 | } | |
c407d41a TM |
2419 | |
2420 | res.fattr = nfs_alloc_fattr(); | |
2421 | if (res.fattr == NULL) | |
2422 | return -ENOMEM; | |
2423 | ||
cccef3b9 | 2424 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
2425 | if (!status) { |
2426 | entry->mask = 0; | |
2427 | if (res.access & NFS4_ACCESS_READ) | |
2428 | entry->mask |= MAY_READ; | |
2429 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
2430 | entry->mask |= MAY_WRITE; | |
2431 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
2432 | entry->mask |= MAY_EXEC; | |
c407d41a | 2433 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2434 | } |
c407d41a | 2435 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2436 | return status; |
2437 | } | |
2438 | ||
2439 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2440 | { | |
2441 | struct nfs4_exception exception = { }; | |
2442 | int err; | |
2443 | do { | |
2444 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2445 | _nfs4_proc_access(inode, entry), | |
2446 | &exception); | |
2447 | } while (exception.retry); | |
2448 | return err; | |
2449 | } | |
2450 | ||
2451 | /* | |
2452 | * TODO: For the time being, we don't try to get any attributes | |
2453 | * along with any of the zero-copy operations READ, READDIR, | |
2454 | * READLINK, WRITE. | |
2455 | * | |
2456 | * In the case of the first three, we want to put the GETATTR | |
2457 | * after the read-type operation -- this is because it is hard | |
2458 | * to predict the length of a GETATTR response in v4, and thus | |
2459 | * align the READ data correctly. This means that the GETATTR | |
2460 | * may end up partially falling into the page cache, and we should | |
2461 | * shift it into the 'tail' of the xdr_buf before processing. | |
2462 | * To do this efficiently, we need to know the total length | |
2463 | * of data received, which doesn't seem to be available outside | |
2464 | * of the RPC layer. | |
2465 | * | |
2466 | * In the case of WRITE, we also want to put the GETATTR after | |
2467 | * the operation -- in this case because we want to make sure | |
2468 | * we get the post-operation mtime and size. This means that | |
2469 | * we can't use xdr_encode_pages() as written: we need a variant | |
2470 | * of it which would leave room in the 'tail' iovec. | |
2471 | * | |
2472 | * Both of these changes to the XDR layer would in fact be quite | |
2473 | * minor, but I decided to leave them for a subsequent patch. | |
2474 | */ | |
2475 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2476 | unsigned int pgbase, unsigned int pglen) | |
2477 | { | |
2478 | struct nfs4_readlink args = { | |
2479 | .fh = NFS_FH(inode), | |
2480 | .pgbase = pgbase, | |
2481 | .pglen = pglen, | |
2482 | .pages = &page, | |
2483 | }; | |
f50c7000 | 2484 | struct nfs4_readlink_res res; |
1da177e4 LT |
2485 | struct rpc_message msg = { |
2486 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2487 | .rpc_argp = &args, | |
f50c7000 | 2488 | .rpc_resp = &res, |
1da177e4 LT |
2489 | }; |
2490 | ||
cccef3b9 | 2491 | return nfs4_call_sync(NFS_SERVER(inode), &msg, &args, &res, 0); |
1da177e4 LT |
2492 | } |
2493 | ||
2494 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2495 | unsigned int pgbase, unsigned int pglen) | |
2496 | { | |
2497 | struct nfs4_exception exception = { }; | |
2498 | int err; | |
2499 | do { | |
2500 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2501 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2502 | &exception); | |
2503 | } while (exception.retry); | |
2504 | return err; | |
2505 | } | |
2506 | ||
1da177e4 LT |
2507 | /* |
2508 | * Got race? | |
2509 | * We will need to arrange for the VFS layer to provide an atomic open. | |
2510 | * Until then, this create/open method is prone to inefficiency and race | |
2511 | * conditions due to the lookup, create, and open VFS calls from sys_open() | |
2512 | * placed on the wire. | |
2513 | * | |
2514 | * Given the above sorry state of affairs, I'm simply sending an OPEN. | |
2515 | * The file will be opened again in the subsequent VFS open call | |
2516 | * (nfs4_proc_file_open). | |
2517 | * | |
2518 | * The open for read will just hang around to be used by any process that | |
2519 | * opens the file O_RDONLY. This will all be resolved with the VFS changes. | |
2520 | */ | |
2521 | ||
2522 | static int | |
2523 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
c0204fd2 | 2524 | int flags, struct nfs_open_context *ctx) |
1da177e4 | 2525 | { |
c0204fd2 | 2526 | struct path my_path = { |
ad389da7 TM |
2527 | .dentry = dentry, |
2528 | }; | |
c0204fd2 | 2529 | struct path *path = &my_path; |
1da177e4 | 2530 | struct nfs4_state *state; |
c0204fd2 TM |
2531 | struct rpc_cred *cred = NULL; |
2532 | fmode_t fmode = 0; | |
1da177e4 LT |
2533 | int status = 0; |
2534 | ||
c0204fd2 TM |
2535 | if (ctx != NULL) { |
2536 | cred = ctx->cred; | |
2537 | path = &ctx->path; | |
2538 | fmode = ctx->mode; | |
1da177e4 | 2539 | } |
a8a5da99 | 2540 | sattr->ia_mode &= ~current_umask(); |
c0204fd2 | 2541 | state = nfs4_do_open(dir, path, fmode, flags, sattr, cred); |
d4d9cdcb | 2542 | d_drop(dentry); |
1da177e4 LT |
2543 | if (IS_ERR(state)) { |
2544 | status = PTR_ERR(state); | |
c0204fd2 | 2545 | goto out; |
1da177e4 | 2546 | } |
d4d9cdcb | 2547 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2548 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
c0204fd2 TM |
2549 | if (ctx != NULL) |
2550 | ctx->state = state; | |
02a913a7 | 2551 | else |
c0204fd2 | 2552 | nfs4_close_sync(path, state, fmode); |
1da177e4 LT |
2553 | out: |
2554 | return status; | |
2555 | } | |
2556 | ||
2557 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2558 | { | |
16e42959 | 2559 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2560 | struct nfs_removeargs args = { |
1da177e4 | 2561 | .fh = NFS_FH(dir), |
4fdc17b2 TM |
2562 | .name.len = name->len, |
2563 | .name.name = name->name, | |
16e42959 TM |
2564 | .bitmask = server->attr_bitmask, |
2565 | }; | |
4fdc17b2 | 2566 | struct nfs_removeres res = { |
16e42959 | 2567 | .server = server, |
1da177e4 | 2568 | }; |
1da177e4 | 2569 | struct rpc_message msg = { |
4fdc17b2 TM |
2570 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2571 | .rpc_argp = &args, | |
2572 | .rpc_resp = &res, | |
1da177e4 | 2573 | }; |
d346890b TM |
2574 | int status = -ENOMEM; |
2575 | ||
2576 | res.dir_attr = nfs_alloc_fattr(); | |
2577 | if (res.dir_attr == NULL) | |
2578 | goto out; | |
1da177e4 | 2579 | |
cccef3b9 | 2580 | status = nfs4_call_sync(server, &msg, &args, &res, 1); |
16e42959 TM |
2581 | if (status == 0) { |
2582 | update_changeattr(dir, &res.cinfo); | |
d346890b | 2583 | nfs_post_op_update_inode(dir, res.dir_attr); |
16e42959 | 2584 | } |
d346890b TM |
2585 | nfs_free_fattr(res.dir_attr); |
2586 | out: | |
1da177e4 LT |
2587 | return status; |
2588 | } | |
2589 | ||
2590 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2591 | { | |
2592 | struct nfs4_exception exception = { }; | |
2593 | int err; | |
2594 | do { | |
2595 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2596 | _nfs4_proc_remove(dir, name), | |
2597 | &exception); | |
2598 | } while (exception.retry); | |
2599 | return err; | |
2600 | } | |
2601 | ||
e4eff1a6 | 2602 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2603 | { |
e4eff1a6 TM |
2604 | struct nfs_server *server = NFS_SERVER(dir); |
2605 | struct nfs_removeargs *args = msg->rpc_argp; | |
2606 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2607 | |
a65318bf | 2608 | args->bitmask = server->cache_consistency_bitmask; |
e4eff1a6 | 2609 | res->server = server; |
dfb4f309 | 2610 | res->seq_res.sr_slot = NULL; |
1da177e4 | 2611 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
1da177e4 LT |
2612 | } |
2613 | ||
e4eff1a6 | 2614 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2615 | { |
e4eff1a6 TM |
2616 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2617 | ||
14516c3a TM |
2618 | if (!nfs4_sequence_done(task, &res->seq_res)) |
2619 | return 0; | |
9e33bed5 | 2620 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
2621 | return 0; |
2622 | update_changeattr(dir, &res->cinfo); | |
d346890b | 2623 | nfs_post_op_update_inode(dir, res->dir_attr); |
e4eff1a6 | 2624 | return 1; |
1da177e4 LT |
2625 | } |
2626 | ||
d3d4152a JL |
2627 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
2628 | { | |
2629 | struct nfs_server *server = NFS_SERVER(dir); | |
2630 | struct nfs_renameargs *arg = msg->rpc_argp; | |
2631 | struct nfs_renameres *res = msg->rpc_resp; | |
2632 | ||
2633 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
2634 | arg->bitmask = server->attr_bitmask; | |
2635 | res->server = server; | |
2636 | } | |
2637 | ||
2638 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
2639 | struct inode *new_dir) | |
2640 | { | |
2641 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
2642 | ||
2643 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
2644 | return 0; | |
2645 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
2646 | return 0; | |
2647 | ||
2648 | update_changeattr(old_dir, &res->old_cinfo); | |
2649 | nfs_post_op_update_inode(old_dir, res->old_fattr); | |
2650 | update_changeattr(new_dir, &res->new_cinfo); | |
2651 | nfs_post_op_update_inode(new_dir, res->new_fattr); | |
2652 | return 1; | |
2653 | } | |
2654 | ||
1da177e4 LT |
2655 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
2656 | struct inode *new_dir, struct qstr *new_name) | |
2657 | { | |
6caf2c82 | 2658 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 2659 | struct nfs_renameargs arg = { |
1da177e4 LT |
2660 | .old_dir = NFS_FH(old_dir), |
2661 | .new_dir = NFS_FH(new_dir), | |
2662 | .old_name = old_name, | |
2663 | .new_name = new_name, | |
6caf2c82 TM |
2664 | .bitmask = server->attr_bitmask, |
2665 | }; | |
e8582a8b | 2666 | struct nfs_renameres res = { |
6caf2c82 | 2667 | .server = server, |
1da177e4 | 2668 | }; |
1da177e4 LT |
2669 | struct rpc_message msg = { |
2670 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2671 | .rpc_argp = &arg, | |
2672 | .rpc_resp = &res, | |
2673 | }; | |
011fff72 | 2674 | int status = -ENOMEM; |
1da177e4 | 2675 | |
011fff72 TM |
2676 | res.old_fattr = nfs_alloc_fattr(); |
2677 | res.new_fattr = nfs_alloc_fattr(); | |
2678 | if (res.old_fattr == NULL || res.new_fattr == NULL) | |
2679 | goto out; | |
1da177e4 | 2680 | |
011fff72 | 2681 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
1da177e4 LT |
2682 | if (!status) { |
2683 | update_changeattr(old_dir, &res.old_cinfo); | |
6caf2c82 | 2684 | nfs_post_op_update_inode(old_dir, res.old_fattr); |
1da177e4 | 2685 | update_changeattr(new_dir, &res.new_cinfo); |
6caf2c82 | 2686 | nfs_post_op_update_inode(new_dir, res.new_fattr); |
1da177e4 | 2687 | } |
011fff72 TM |
2688 | out: |
2689 | nfs_free_fattr(res.new_fattr); | |
2690 | nfs_free_fattr(res.old_fattr); | |
1da177e4 LT |
2691 | return status; |
2692 | } | |
2693 | ||
2694 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2695 | struct inode *new_dir, struct qstr *new_name) | |
2696 | { | |
2697 | struct nfs4_exception exception = { }; | |
2698 | int err; | |
2699 | do { | |
2700 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2701 | _nfs4_proc_rename(old_dir, old_name, | |
2702 | new_dir, new_name), | |
2703 | &exception); | |
2704 | } while (exception.retry); | |
2705 | return err; | |
2706 | } | |
2707 | ||
2708 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2709 | { | |
91ba2eee | 2710 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2711 | struct nfs4_link_arg arg = { |
2712 | .fh = NFS_FH(inode), | |
2713 | .dir_fh = NFS_FH(dir), | |
2714 | .name = name, | |
91ba2eee TM |
2715 | .bitmask = server->attr_bitmask, |
2716 | }; | |
91ba2eee TM |
2717 | struct nfs4_link_res res = { |
2718 | .server = server, | |
1da177e4 | 2719 | }; |
1da177e4 LT |
2720 | struct rpc_message msg = { |
2721 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
2722 | .rpc_argp = &arg, | |
91ba2eee | 2723 | .rpc_resp = &res, |
1da177e4 | 2724 | }; |
136f2627 TM |
2725 | int status = -ENOMEM; |
2726 | ||
2727 | res.fattr = nfs_alloc_fattr(); | |
2728 | res.dir_attr = nfs_alloc_fattr(); | |
2729 | if (res.fattr == NULL || res.dir_attr == NULL) | |
2730 | goto out; | |
1da177e4 | 2731 | |
cccef3b9 | 2732 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
91ba2eee TM |
2733 | if (!status) { |
2734 | update_changeattr(dir, &res.cinfo); | |
2735 | nfs_post_op_update_inode(dir, res.dir_attr); | |
73a3d07c | 2736 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 2737 | } |
136f2627 TM |
2738 | out: |
2739 | nfs_free_fattr(res.dir_attr); | |
2740 | nfs_free_fattr(res.fattr); | |
1da177e4 LT |
2741 | return status; |
2742 | } | |
2743 | ||
2744 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2745 | { | |
2746 | struct nfs4_exception exception = { }; | |
2747 | int err; | |
2748 | do { | |
2749 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2750 | _nfs4_proc_link(inode, dir, name), | |
2751 | &exception); | |
2752 | } while (exception.retry); | |
2753 | return err; | |
2754 | } | |
2755 | ||
57dc9a57 TM |
2756 | struct nfs4_createdata { |
2757 | struct rpc_message msg; | |
2758 | struct nfs4_create_arg arg; | |
2759 | struct nfs4_create_res res; | |
2760 | struct nfs_fh fh; | |
2761 | struct nfs_fattr fattr; | |
2762 | struct nfs_fattr dir_fattr; | |
2763 | }; | |
2764 | ||
2765 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
2766 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
2767 | { | |
2768 | struct nfs4_createdata *data; | |
2769 | ||
2770 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
2771 | if (data != NULL) { | |
2772 | struct nfs_server *server = NFS_SERVER(dir); | |
2773 | ||
2774 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
2775 | data->msg.rpc_argp = &data->arg; | |
2776 | data->msg.rpc_resp = &data->res; | |
2777 | data->arg.dir_fh = NFS_FH(dir); | |
2778 | data->arg.server = server; | |
2779 | data->arg.name = name; | |
2780 | data->arg.attrs = sattr; | |
2781 | data->arg.ftype = ftype; | |
2782 | data->arg.bitmask = server->attr_bitmask; | |
2783 | data->res.server = server; | |
2784 | data->res.fh = &data->fh; | |
2785 | data->res.fattr = &data->fattr; | |
2786 | data->res.dir_fattr = &data->dir_fattr; | |
2787 | nfs_fattr_init(data->res.fattr); | |
2788 | nfs_fattr_init(data->res.dir_fattr); | |
2789 | } | |
2790 | return data; | |
2791 | } | |
2792 | ||
2793 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
2794 | { | |
cccef3b9 AA |
2795 | int status = nfs4_call_sync(NFS_SERVER(dir), &data->msg, |
2796 | &data->arg, &data->res, 1); | |
57dc9a57 TM |
2797 | if (status == 0) { |
2798 | update_changeattr(dir, &data->res.dir_cinfo); | |
2799 | nfs_post_op_update_inode(dir, data->res.dir_fattr); | |
2800 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); | |
2801 | } | |
2802 | return status; | |
2803 | } | |
2804 | ||
2805 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
2806 | { | |
2807 | kfree(data); | |
2808 | } | |
2809 | ||
4f390c15 | 2810 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2811 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 2812 | { |
57dc9a57 TM |
2813 | struct nfs4_createdata *data; |
2814 | int status = -ENAMETOOLONG; | |
1da177e4 | 2815 | |
94a6d753 | 2816 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 2817 | goto out; |
4f390c15 | 2818 | |
57dc9a57 TM |
2819 | status = -ENOMEM; |
2820 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
2821 | if (data == NULL) | |
2822 | goto out; | |
2823 | ||
2824 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
2825 | data->arg.u.symlink.pages = &page; | |
2826 | data->arg.u.symlink.len = len; | |
1da177e4 | 2827 | |
57dc9a57 TM |
2828 | status = nfs4_do_create(dir, dentry, data); |
2829 | ||
2830 | nfs4_free_createdata(data); | |
2831 | out: | |
1da177e4 LT |
2832 | return status; |
2833 | } | |
2834 | ||
4f390c15 | 2835 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2836 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
2837 | { |
2838 | struct nfs4_exception exception = { }; | |
2839 | int err; | |
2840 | do { | |
2841 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
2842 | _nfs4_proc_symlink(dir, dentry, page, |
2843 | len, sattr), | |
1da177e4 LT |
2844 | &exception); |
2845 | } while (exception.retry); | |
2846 | return err; | |
2847 | } | |
2848 | ||
2849 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2850 | struct iattr *sattr) | |
2851 | { | |
57dc9a57 TM |
2852 | struct nfs4_createdata *data; |
2853 | int status = -ENOMEM; | |
1da177e4 | 2854 | |
57dc9a57 TM |
2855 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
2856 | if (data == NULL) | |
2857 | goto out; | |
2858 | ||
2859 | status = nfs4_do_create(dir, dentry, data); | |
2860 | ||
2861 | nfs4_free_createdata(data); | |
2862 | out: | |
1da177e4 LT |
2863 | return status; |
2864 | } | |
2865 | ||
2866 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2867 | struct iattr *sattr) | |
2868 | { | |
2869 | struct nfs4_exception exception = { }; | |
2870 | int err; | |
a8a5da99 AK |
2871 | |
2872 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
2873 | do { |
2874 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2875 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
2876 | &exception); | |
2877 | } while (exception.retry); | |
2878 | return err; | |
2879 | } | |
2880 | ||
2881 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 2882 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
2883 | { |
2884 | struct inode *dir = dentry->d_inode; | |
2885 | struct nfs4_readdir_arg args = { | |
2886 | .fh = NFS_FH(dir), | |
56e4ebf8 | 2887 | .pages = pages, |
1da177e4 LT |
2888 | .pgbase = 0, |
2889 | .count = count, | |
96d25e53 | 2890 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 2891 | .plus = plus, |
1da177e4 LT |
2892 | }; |
2893 | struct nfs4_readdir_res res; | |
2894 | struct rpc_message msg = { | |
2895 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
2896 | .rpc_argp = &args, | |
2897 | .rpc_resp = &res, | |
2898 | .rpc_cred = cred, | |
2899 | }; | |
2900 | int status; | |
2901 | ||
3110ff80 | 2902 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
2903 | dentry->d_parent->d_name.name, |
2904 | dentry->d_name.name, | |
2905 | (unsigned long long)cookie); | |
1da177e4 LT |
2906 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
2907 | res.pgbase = args.pgbase; | |
cccef3b9 | 2908 | status = nfs4_call_sync(NFS_SERVER(dir), &msg, &args, &res, 0); |
ac396128 | 2909 | if (status >= 0) { |
1da177e4 | 2910 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
2911 | status += args.pgbase; |
2912 | } | |
c4812998 TM |
2913 | |
2914 | nfs_invalidate_atime(dir); | |
2915 | ||
3110ff80 | 2916 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
2917 | return status; |
2918 | } | |
2919 | ||
2920 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 2921 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
2922 | { |
2923 | struct nfs4_exception exception = { }; | |
2924 | int err; | |
2925 | do { | |
2926 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
2927 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 2928 | pages, count, plus), |
1da177e4 LT |
2929 | &exception); |
2930 | } while (exception.retry); | |
2931 | return err; | |
2932 | } | |
2933 | ||
2934 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2935 | struct iattr *sattr, dev_t rdev) | |
2936 | { | |
57dc9a57 TM |
2937 | struct nfs4_createdata *data; |
2938 | int mode = sattr->ia_mode; | |
2939 | int status = -ENOMEM; | |
1da177e4 LT |
2940 | |
2941 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
2942 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
57dc9a57 TM |
2943 | |
2944 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); | |
2945 | if (data == NULL) | |
2946 | goto out; | |
2947 | ||
1da177e4 | 2948 | if (S_ISFIFO(mode)) |
57dc9a57 | 2949 | data->arg.ftype = NF4FIFO; |
1da177e4 | 2950 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
2951 | data->arg.ftype = NF4BLK; |
2952 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
2953 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
2954 | } |
2955 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
2956 | data->arg.ftype = NF4CHR; |
2957 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
2958 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 | 2959 | } |
1da177e4 | 2960 | |
57dc9a57 TM |
2961 | status = nfs4_do_create(dir, dentry, data); |
2962 | ||
2963 | nfs4_free_createdata(data); | |
2964 | out: | |
1da177e4 LT |
2965 | return status; |
2966 | } | |
2967 | ||
2968 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
2969 | struct iattr *sattr, dev_t rdev) | |
2970 | { | |
2971 | struct nfs4_exception exception = { }; | |
2972 | int err; | |
a8a5da99 AK |
2973 | |
2974 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
2975 | do { |
2976 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2977 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
2978 | &exception); | |
2979 | } while (exception.retry); | |
2980 | return err; | |
2981 | } | |
2982 | ||
2983 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
2984 | struct nfs_fsstat *fsstat) | |
2985 | { | |
2986 | struct nfs4_statfs_arg args = { | |
2987 | .fh = fhandle, | |
2988 | .bitmask = server->attr_bitmask, | |
2989 | }; | |
24ad148a BH |
2990 | struct nfs4_statfs_res res = { |
2991 | .fsstat = fsstat, | |
2992 | }; | |
1da177e4 LT |
2993 | struct rpc_message msg = { |
2994 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
2995 | .rpc_argp = &args, | |
24ad148a | 2996 | .rpc_resp = &res, |
1da177e4 LT |
2997 | }; |
2998 | ||
0e574af1 | 2999 | nfs_fattr_init(fsstat->fattr); |
cccef3b9 | 3000 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
3001 | } |
3002 | ||
3003 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3004 | { | |
3005 | struct nfs4_exception exception = { }; | |
3006 | int err; | |
3007 | do { | |
3008 | err = nfs4_handle_exception(server, | |
3009 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3010 | &exception); | |
3011 | } while (exception.retry); | |
3012 | return err; | |
3013 | } | |
3014 | ||
3015 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3016 | struct nfs_fsinfo *fsinfo) | |
3017 | { | |
3018 | struct nfs4_fsinfo_arg args = { | |
3019 | .fh = fhandle, | |
3020 | .bitmask = server->attr_bitmask, | |
3021 | }; | |
3dda5e43 BH |
3022 | struct nfs4_fsinfo_res res = { |
3023 | .fsinfo = fsinfo, | |
3024 | }; | |
1da177e4 LT |
3025 | struct rpc_message msg = { |
3026 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3027 | .rpc_argp = &args, | |
3dda5e43 | 3028 | .rpc_resp = &res, |
1da177e4 LT |
3029 | }; |
3030 | ||
cccef3b9 | 3031 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
3032 | } |
3033 | ||
3034 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3035 | { | |
3036 | struct nfs4_exception exception = { }; | |
3037 | int err; | |
3038 | ||
3039 | do { | |
3040 | err = nfs4_handle_exception(server, | |
3041 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
3042 | &exception); | |
3043 | } while (exception.retry); | |
3044 | return err; | |
3045 | } | |
3046 | ||
3047 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3048 | { | |
0e574af1 | 3049 | nfs_fattr_init(fsinfo->fattr); |
1da177e4 LT |
3050 | return nfs4_do_fsinfo(server, fhandle, fsinfo); |
3051 | } | |
3052 | ||
3053 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3054 | struct nfs_pathconf *pathconf) | |
3055 | { | |
3056 | struct nfs4_pathconf_arg args = { | |
3057 | .fh = fhandle, | |
3058 | .bitmask = server->attr_bitmask, | |
3059 | }; | |
d45b2989 BH |
3060 | struct nfs4_pathconf_res res = { |
3061 | .pathconf = pathconf, | |
3062 | }; | |
1da177e4 LT |
3063 | struct rpc_message msg = { |
3064 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3065 | .rpc_argp = &args, | |
d45b2989 | 3066 | .rpc_resp = &res, |
1da177e4 LT |
3067 | }; |
3068 | ||
3069 | /* None of the pathconf attributes are mandatory to implement */ | |
3070 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3071 | memset(pathconf, 0, sizeof(*pathconf)); | |
3072 | return 0; | |
3073 | } | |
3074 | ||
0e574af1 | 3075 | nfs_fattr_init(pathconf->fattr); |
cccef3b9 | 3076 | return nfs4_call_sync(server, &msg, &args, &res, 0); |
1da177e4 LT |
3077 | } |
3078 | ||
3079 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3080 | struct nfs_pathconf *pathconf) | |
3081 | { | |
3082 | struct nfs4_exception exception = { }; | |
3083 | int err; | |
3084 | ||
3085 | do { | |
3086 | err = nfs4_handle_exception(server, | |
3087 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3088 | &exception); | |
3089 | } while (exception.retry); | |
3090 | return err; | |
3091 | } | |
3092 | ||
cbdabc7f | 3093 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3094 | { |
ec06c096 | 3095 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 3096 | |
9e33bed5 | 3097 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
0110ee15 | 3098 | nfs_restart_rpc(task, server->nfs_client); |
ec06c096 | 3099 | return -EAGAIN; |
1da177e4 | 3100 | } |
8850df99 TM |
3101 | |
3102 | nfs_invalidate_atime(data->inode); | |
1da177e4 | 3103 | if (task->tk_status > 0) |
ec06c096 TM |
3104 | renew_lease(server, data->timestamp); |
3105 | return 0; | |
1da177e4 LT |
3106 | } |
3107 | ||
cbdabc7f AA |
3108 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3109 | { | |
3110 | ||
3111 | dprintk("--> %s\n", __func__); | |
3112 | ||
3113 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3114 | return -EAGAIN; | |
3115 | ||
3116 | return data->read_done_cb(task, data); | |
3117 | } | |
3118 | ||
bdc7f021 | 3119 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3120 | { |
1da177e4 | 3121 | data->timestamp = jiffies; |
cbdabc7f | 3122 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3123 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
1da177e4 LT |
3124 | } |
3125 | ||
cbdabc7f AA |
3126 | /* Reset the the nfs_read_data to send the read to the MDS. */ |
3127 | void nfs4_reset_read(struct rpc_task *task, struct nfs_read_data *data) | |
3128 | { | |
3129 | dprintk("%s Reset task for i/o through\n", __func__); | |
3130 | put_lseg(data->lseg); | |
3131 | data->lseg = NULL; | |
3132 | /* offsets will differ in the dense stripe case */ | |
3133 | data->args.offset = data->mds_offset; | |
3134 | data->ds_clp = NULL; | |
3135 | data->args.fh = NFS_FH(data->inode); | |
3136 | data->read_done_cb = nfs4_read_done_cb; | |
3137 | task->tk_ops = data->mds_ops; | |
3138 | rpc_task_reset_client(task, NFS_CLIENT(data->inode)); | |
3139 | } | |
3140 | EXPORT_SYMBOL_GPL(nfs4_reset_read); | |
3141 | ||
b029bc9b | 3142 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3143 | { |
1da177e4 LT |
3144 | struct inode *inode = data->inode; |
3145 | ||
9e33bed5 | 3146 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
0110ee15 | 3147 | nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client); |
788e7a89 | 3148 | return -EAGAIN; |
1da177e4 | 3149 | } |
4f9838c7 | 3150 | if (task->tk_status >= 0) { |
1da177e4 | 3151 | renew_lease(NFS_SERVER(inode), data->timestamp); |
70ca8852 | 3152 | nfs_post_op_update_inode_force_wcc(inode, data->res.fattr); |
4f9838c7 | 3153 | } |
788e7a89 | 3154 | return 0; |
1da177e4 LT |
3155 | } |
3156 | ||
b029bc9b FI |
3157 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3158 | { | |
3159 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3160 | return -EAGAIN; | |
3161 | return data->write_done_cb(task, data); | |
3162 | } | |
3163 | ||
a69aef14 FI |
3164 | /* Reset the the nfs_write_data to send the write to the MDS. */ |
3165 | void nfs4_reset_write(struct rpc_task *task, struct nfs_write_data *data) | |
3166 | { | |
3167 | dprintk("%s Reset task for i/o through\n", __func__); | |
3168 | put_lseg(data->lseg); | |
3169 | data->lseg = NULL; | |
3170 | data->ds_clp = NULL; | |
3171 | data->write_done_cb = nfs4_write_done_cb; | |
3172 | data->args.fh = NFS_FH(data->inode); | |
3173 | data->args.bitmask = data->res.server->cache_consistency_bitmask; | |
3174 | data->args.offset = data->mds_offset; | |
3175 | data->res.fattr = &data->fattr; | |
3176 | task->tk_ops = data->mds_ops; | |
3177 | rpc_task_reset_client(task, NFS_CLIENT(data->inode)); | |
3178 | } | |
3179 | EXPORT_SYMBOL_GPL(nfs4_reset_write); | |
3180 | ||
bdc7f021 | 3181 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3182 | { |
bdc7f021 TM |
3183 | struct nfs_server *server = NFS_SERVER(data->inode); |
3184 | ||
7ffd1064 FI |
3185 | if (data->lseg) { |
3186 | data->args.bitmask = NULL; | |
3187 | data->res.fattr = NULL; | |
3188 | } else | |
3189 | data->args.bitmask = server->cache_consistency_bitmask; | |
b029bc9b FI |
3190 | if (!data->write_done_cb) |
3191 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3192 | data->res.server = server; |
1da177e4 LT |
3193 | data->timestamp = jiffies; |
3194 | ||
bdc7f021 | 3195 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
1da177e4 LT |
3196 | } |
3197 | ||
5f452431 | 3198 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3199 | { |
1da177e4 | 3200 | struct inode *inode = data->inode; |
14516c3a | 3201 | |
9e33bed5 | 3202 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
0110ee15 | 3203 | nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client); |
788e7a89 | 3204 | return -EAGAIN; |
1da177e4 | 3205 | } |
9e08a3c5 | 3206 | nfs_refresh_inode(inode, data->res.fattr); |
788e7a89 | 3207 | return 0; |
1da177e4 LT |
3208 | } |
3209 | ||
5f452431 FI |
3210 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
3211 | { | |
3212 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3213 | return -EAGAIN; | |
3214 | return data->write_done_cb(task, data); | |
3215 | } | |
3216 | ||
bdc7f021 | 3217 | static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3218 | { |
788e7a89 | 3219 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 3220 | |
a65318bf | 3221 | data->args.bitmask = server->cache_consistency_bitmask; |
5f452431 FI |
3222 | if (!data->write_done_cb) |
3223 | data->write_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 3224 | data->res.server = server; |
bdc7f021 | 3225 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
1da177e4 LT |
3226 | } |
3227 | ||
9bc4e3ca CL |
3228 | struct nfs4_renewdata { |
3229 | struct nfs_client *client; | |
3230 | unsigned long timestamp; | |
3231 | }; | |
3232 | ||
1da177e4 LT |
3233 | /* |
3234 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3235 | * standalone procedure for queueing an asynchronous RENEW. | |
3236 | */ | |
9bc4e3ca | 3237 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3238 | { |
9bc4e3ca CL |
3239 | struct nfs4_renewdata *data = calldata; |
3240 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3241 | |
0851de06 AB |
3242 | if (atomic_read(&clp->cl_count) > 1) |
3243 | nfs4_schedule_state_renewal(clp); | |
3244 | nfs_put_client(clp); | |
9bc4e3ca | 3245 | kfree(data); |
dc96aef9 AB |
3246 | } |
3247 | ||
9bc4e3ca | 3248 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3249 | { |
9bc4e3ca CL |
3250 | struct nfs4_renewdata *data = calldata; |
3251 | struct nfs_client *clp = data->client; | |
3252 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3253 | |
3254 | if (task->tk_status < 0) { | |
95baa25c TM |
3255 | /* Unless we're shutting down, schedule state recovery! */ |
3256 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) != 0) | |
0400a6b0 | 3257 | nfs4_schedule_lease_recovery(clp); |
1da177e4 LT |
3258 | return; |
3259 | } | |
452e9352 | 3260 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3261 | } |
3262 | ||
963d8fe5 TM |
3263 | static const struct rpc_call_ops nfs4_renew_ops = { |
3264 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3265 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3266 | }; |
3267 | ||
adfa6f98 | 3268 | int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3269 | { |
3270 | struct rpc_message msg = { | |
3271 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3272 | .rpc_argp = clp, | |
b4454fe1 | 3273 | .rpc_cred = cred, |
1da177e4 | 3274 | }; |
9bc4e3ca | 3275 | struct nfs4_renewdata *data; |
1da177e4 | 3276 | |
0851de06 AB |
3277 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3278 | return -EIO; | |
9bc4e3ca CL |
3279 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
3280 | if (data == NULL) | |
3281 | return -ENOMEM; | |
3282 | data->client = clp; | |
3283 | data->timestamp = jiffies; | |
1da177e4 | 3284 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3285 | &nfs4_renew_ops, data); |
1da177e4 LT |
3286 | } |
3287 | ||
adfa6f98 | 3288 | int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3289 | { |
3290 | struct rpc_message msg = { | |
3291 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3292 | .rpc_argp = clp, | |
b4454fe1 | 3293 | .rpc_cred = cred, |
1da177e4 LT |
3294 | }; |
3295 | unsigned long now = jiffies; | |
3296 | int status; | |
3297 | ||
3298 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3299 | if (status < 0) | |
3300 | return status; | |
452e9352 | 3301 | do_renew_lease(clp, now); |
1da177e4 LT |
3302 | return 0; |
3303 | } | |
3304 | ||
aa1870af BF |
3305 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3306 | { | |
3307 | return (server->caps & NFS_CAP_ACLS) | |
3308 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3309 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3310 | } | |
3311 | ||
3312 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
3313 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
3314 | * the stack. | |
3315 | */ | |
3316 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
3317 | ||
3318 | static void buf_to_pages(const void *buf, size_t buflen, | |
3319 | struct page **pages, unsigned int *pgbase) | |
3320 | { | |
3321 | const void *p = buf; | |
3322 | ||
3323 | *pgbase = offset_in_page(buf); | |
3324 | p -= *pgbase; | |
3325 | while (p < buf + buflen) { | |
3326 | *(pages++) = virt_to_page(p); | |
3327 | p += PAGE_CACHE_SIZE; | |
3328 | } | |
3329 | } | |
3330 | ||
e9e3d724 NH |
3331 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3332 | struct page **pages, unsigned int *pgbase) | |
3333 | { | |
3334 | struct page *newpage, **spages; | |
3335 | int rc = 0; | |
3336 | size_t len; | |
3337 | spages = pages; | |
3338 | ||
3339 | do { | |
43b7c3f0 | 3340 | len = min_t(size_t, PAGE_CACHE_SIZE, buflen); |
e9e3d724 NH |
3341 | newpage = alloc_page(GFP_KERNEL); |
3342 | ||
3343 | if (newpage == NULL) | |
3344 | goto unwind; | |
3345 | memcpy(page_address(newpage), buf, len); | |
3346 | buf += len; | |
3347 | buflen -= len; | |
3348 | *pages++ = newpage; | |
3349 | rc++; | |
3350 | } while (buflen != 0); | |
3351 | ||
3352 | return rc; | |
3353 | ||
3354 | unwind: | |
3355 | for(; rc > 0; rc--) | |
3356 | __free_page(spages[rc-1]); | |
3357 | return -ENOMEM; | |
3358 | } | |
3359 | ||
e50a1c2e BF |
3360 | struct nfs4_cached_acl { |
3361 | int cached; | |
3362 | size_t len; | |
3e9d4154 | 3363 | char data[0]; |
e50a1c2e BF |
3364 | }; |
3365 | ||
3366 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3367 | { | |
3368 | struct nfs_inode *nfsi = NFS_I(inode); | |
3369 | ||
3370 | spin_lock(&inode->i_lock); | |
3371 | kfree(nfsi->nfs4_acl); | |
3372 | nfsi->nfs4_acl = acl; | |
3373 | spin_unlock(&inode->i_lock); | |
3374 | } | |
3375 | ||
3376 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3377 | { | |
3378 | nfs4_set_cached_acl(inode, NULL); | |
3379 | } | |
3380 | ||
3381 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3382 | { | |
3383 | struct nfs_inode *nfsi = NFS_I(inode); | |
3384 | struct nfs4_cached_acl *acl; | |
3385 | int ret = -ENOENT; | |
3386 | ||
3387 | spin_lock(&inode->i_lock); | |
3388 | acl = nfsi->nfs4_acl; | |
3389 | if (acl == NULL) | |
3390 | goto out; | |
3391 | if (buf == NULL) /* user is just asking for length */ | |
3392 | goto out_len; | |
3393 | if (acl->cached == 0) | |
3394 | goto out; | |
3395 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3396 | if (acl->len > buflen) | |
3397 | goto out; | |
3398 | memcpy(buf, acl->data, acl->len); | |
3399 | out_len: | |
3400 | ret = acl->len; | |
3401 | out: | |
3402 | spin_unlock(&inode->i_lock); | |
3403 | return ret; | |
3404 | } | |
3405 | ||
3406 | static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len) | |
3407 | { | |
3408 | struct nfs4_cached_acl *acl; | |
3409 | ||
3410 | if (buf && acl_len <= PAGE_SIZE) { | |
3411 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); | |
3412 | if (acl == NULL) | |
3413 | goto out; | |
3414 | acl->cached = 1; | |
3415 | memcpy(acl->data, buf, acl_len); | |
3416 | } else { | |
3417 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3418 | if (acl == NULL) | |
3419 | goto out; | |
3420 | acl->cached = 0; | |
3421 | } | |
3422 | acl->len = acl_len; | |
3423 | out: | |
3424 | nfs4_set_cached_acl(inode, acl); | |
3425 | } | |
3426 | ||
16b4289c | 3427 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3428 | { |
aa1870af BF |
3429 | struct page *pages[NFS4ACL_MAXPAGES]; |
3430 | struct nfs_getaclargs args = { | |
3431 | .fh = NFS_FH(inode), | |
3432 | .acl_pages = pages, | |
3433 | .acl_len = buflen, | |
3434 | }; | |
663c79b3 BH |
3435 | struct nfs_getaclres res = { |
3436 | .acl_len = buflen, | |
3437 | }; | |
e50a1c2e | 3438 | void *resp_buf; |
aa1870af BF |
3439 | struct rpc_message msg = { |
3440 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3441 | .rpc_argp = &args, | |
663c79b3 | 3442 | .rpc_resp = &res, |
aa1870af | 3443 | }; |
e50a1c2e | 3444 | struct page *localpage = NULL; |
aa1870af BF |
3445 | int ret; |
3446 | ||
e50a1c2e BF |
3447 | if (buflen < PAGE_SIZE) { |
3448 | /* As long as we're doing a round trip to the server anyway, | |
3449 | * let's be prepared for a page of acl data. */ | |
3450 | localpage = alloc_page(GFP_KERNEL); | |
3451 | resp_buf = page_address(localpage); | |
3452 | if (localpage == NULL) | |
3453 | return -ENOMEM; | |
3454 | args.acl_pages[0] = localpage; | |
3455 | args.acl_pgbase = 0; | |
663c79b3 | 3456 | args.acl_len = PAGE_SIZE; |
e50a1c2e BF |
3457 | } else { |
3458 | resp_buf = buf; | |
3459 | buf_to_pages(buf, buflen, args.acl_pages, &args.acl_pgbase); | |
3460 | } | |
cccef3b9 | 3461 | ret = nfs4_call_sync(NFS_SERVER(inode), &msg, &args, &res, 0); |
e50a1c2e BF |
3462 | if (ret) |
3463 | goto out_free; | |
663c79b3 BH |
3464 | if (res.acl_len > args.acl_len) |
3465 | nfs4_write_cached_acl(inode, NULL, res.acl_len); | |
e50a1c2e | 3466 | else |
663c79b3 | 3467 | nfs4_write_cached_acl(inode, resp_buf, res.acl_len); |
e50a1c2e BF |
3468 | if (buf) { |
3469 | ret = -ERANGE; | |
663c79b3 | 3470 | if (res.acl_len > buflen) |
e50a1c2e BF |
3471 | goto out_free; |
3472 | if (localpage) | |
663c79b3 | 3473 | memcpy(buf, resp_buf, res.acl_len); |
e50a1c2e | 3474 | } |
663c79b3 | 3475 | ret = res.acl_len; |
e50a1c2e BF |
3476 | out_free: |
3477 | if (localpage) | |
3478 | __free_page(localpage); | |
aa1870af BF |
3479 | return ret; |
3480 | } | |
3481 | ||
16b4289c TM |
3482 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3483 | { | |
3484 | struct nfs4_exception exception = { }; | |
3485 | ssize_t ret; | |
3486 | do { | |
3487 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3488 | if (ret >= 0) | |
3489 | break; | |
3490 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3491 | } while (exception.retry); | |
3492 | return ret; | |
3493 | } | |
3494 | ||
e50a1c2e BF |
3495 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3496 | { | |
3497 | struct nfs_server *server = NFS_SERVER(inode); | |
3498 | int ret; | |
3499 | ||
3500 | if (!nfs4_server_supports_acls(server)) | |
3501 | return -EOPNOTSUPP; | |
3502 | ret = nfs_revalidate_inode(server, inode); | |
3503 | if (ret < 0) | |
3504 | return ret; | |
08a22b39 AK |
3505 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
3506 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
3507 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
3508 | if (ret != -ENOENT) | |
3509 | return ret; | |
3510 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3511 | } | |
3512 | ||
16b4289c | 3513 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3514 | { |
3515 | struct nfs_server *server = NFS_SERVER(inode); | |
3516 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3517 | struct nfs_setaclargs arg = { | |
3518 | .fh = NFS_FH(inode), | |
3519 | .acl_pages = pages, | |
3520 | .acl_len = buflen, | |
3521 | }; | |
73c403a9 | 3522 | struct nfs_setaclres res; |
4b580ee3 BF |
3523 | struct rpc_message msg = { |
3524 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3525 | .rpc_argp = &arg, | |
73c403a9 | 3526 | .rpc_resp = &res, |
4b580ee3 | 3527 | }; |
e9e3d724 | 3528 | int ret, i; |
4b580ee3 BF |
3529 | |
3530 | if (!nfs4_server_supports_acls(server)) | |
3531 | return -EOPNOTSUPP; | |
e9e3d724 NH |
3532 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
3533 | if (i < 0) | |
3534 | return i; | |
642ac549 | 3535 | nfs_inode_return_delegation(inode); |
cccef3b9 | 3536 | ret = nfs4_call_sync(server, &msg, &arg, &res, 1); |
e9e3d724 NH |
3537 | |
3538 | /* | |
3539 | * Free each page after tx, so the only ref left is | |
3540 | * held by the network stack | |
3541 | */ | |
3542 | for (; i > 0; i--) | |
3543 | put_page(pages[i-1]); | |
3544 | ||
08a22b39 AK |
3545 | /* |
3546 | * Acl update can result in inode attribute update. | |
3547 | * so mark the attribute cache invalid. | |
3548 | */ | |
3549 | spin_lock(&inode->i_lock); | |
3550 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
3551 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
3552 | nfs_access_zap_cache(inode); |
3553 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3554 | return ret; |
3555 | } | |
3556 | ||
16b4289c TM |
3557 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3558 | { | |
3559 | struct nfs4_exception exception = { }; | |
3560 | int err; | |
3561 | do { | |
3562 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3563 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3564 | &exception); | |
3565 | } while (exception.retry); | |
3566 | return err; | |
3567 | } | |
3568 | ||
1da177e4 | 3569 | static int |
aa5190d0 | 3570 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 3571 | { |
aa5190d0 TM |
3572 | struct nfs_client *clp = server->nfs_client; |
3573 | ||
3574 | if (task->tk_status >= 0) | |
1da177e4 LT |
3575 | return 0; |
3576 | switch(task->tk_status) { | |
9e33bed5 TM |
3577 | case -NFS4ERR_ADMIN_REVOKED: |
3578 | case -NFS4ERR_BAD_STATEID: | |
3579 | case -NFS4ERR_OPENMODE: | |
3580 | if (state == NULL) | |
3581 | break; | |
0400a6b0 TM |
3582 | nfs4_schedule_stateid_recovery(server, state); |
3583 | goto wait_on_recovery; | |
1da177e4 | 3584 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 3585 | case -NFS4ERR_STALE_CLIENTID: |
1da177e4 | 3586 | case -NFS4ERR_EXPIRED: |
0400a6b0 TM |
3587 | nfs4_schedule_lease_recovery(clp); |
3588 | goto wait_on_recovery; | |
4745e315 AA |
3589 | #if defined(CONFIG_NFS_V4_1) |
3590 | case -NFS4ERR_BADSESSION: | |
3591 | case -NFS4ERR_BADSLOT: | |
3592 | case -NFS4ERR_BAD_HIGH_SLOT: | |
3593 | case -NFS4ERR_DEADSESSION: | |
3594 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
3595 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
3596 | case -NFS4ERR_SEQ_MISORDERED: | |
3597 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
3598 | task->tk_status); | |
0400a6b0 | 3599 | nfs4_schedule_session_recovery(clp->cl_session); |
4745e315 AA |
3600 | task->tk_status = 0; |
3601 | return -EAGAIN; | |
3602 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 3603 | case -NFS4ERR_DELAY: |
aa5190d0 | 3604 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 3605 | case -NFS4ERR_GRACE: |
2c643488 | 3606 | case -EKEYEXPIRED: |
1da177e4 LT |
3607 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
3608 | task->tk_status = 0; | |
3609 | return -EAGAIN; | |
3610 | case -NFS4ERR_OLD_STATEID: | |
3611 | task->tk_status = 0; | |
3612 | return -EAGAIN; | |
3613 | } | |
3614 | task->tk_status = nfs4_map_errors(task->tk_status); | |
3615 | return 0; | |
0400a6b0 | 3616 | wait_on_recovery: |
a2c0b9e2 | 3617 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
3618 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
3619 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
3620 | task->tk_status = 0; | |
3621 | return -EAGAIN; | |
1da177e4 LT |
3622 | } |
3623 | ||
bb8b27e5 TM |
3624 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
3625 | unsigned short port, struct rpc_cred *cred, | |
3626 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
3627 | { |
3628 | nfs4_verifier sc_verifier; | |
3629 | struct nfs4_setclientid setclientid = { | |
3630 | .sc_verifier = &sc_verifier, | |
3631 | .sc_prog = program, | |
f4eecd5d | 3632 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
3633 | }; |
3634 | struct rpc_message msg = { | |
3635 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
3636 | .rpc_argp = &setclientid, | |
bb8b27e5 | 3637 | .rpc_resp = res, |
286d7d6a | 3638 | .rpc_cred = cred, |
1da177e4 | 3639 | }; |
bc4785cd | 3640 | __be32 *p; |
1da177e4 LT |
3641 | int loop = 0; |
3642 | int status; | |
3643 | ||
bc4785cd | 3644 | p = (__be32*)sc_verifier.data; |
1da177e4 LT |
3645 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); |
3646 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
3647 | ||
3648 | for(;;) { | |
3649 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, | |
69dd716c | 3650 | sizeof(setclientid.sc_name), "%s/%s %s %s %u", |
d4d3c507 CL |
3651 | clp->cl_ipaddr, |
3652 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3653 | RPC_DISPLAY_ADDR), | |
69dd716c TM |
3654 | rpc_peeraddr2str(clp->cl_rpcclient, |
3655 | RPC_DISPLAY_PROTO), | |
78ea323b | 3656 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
1da177e4 LT |
3657 | clp->cl_id_uniquifier); |
3658 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
d4d3c507 CL |
3659 | sizeof(setclientid.sc_netid), |
3660 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3661 | RPC_DISPLAY_NETID)); | |
1da177e4 | 3662 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 3663 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
3664 | clp->cl_ipaddr, port >> 8, port & 255); |
3665 | ||
3666 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3667 | if (status != -NFS4ERR_CLID_INUSE) | |
3668 | break; | |
3669 | if (signalled()) | |
3670 | break; | |
3671 | if (loop++ & 1) | |
611c96c8 | 3672 | ssleep(clp->cl_lease_time / HZ + 1); |
1da177e4 LT |
3673 | else |
3674 | if (++clp->cl_id_uniquifier == 0) | |
3675 | break; | |
3676 | } | |
3677 | return status; | |
3678 | } | |
3679 | ||
bb8b27e5 TM |
3680 | static int _nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
3681 | struct nfs4_setclientid_res *arg, | |
3682 | struct rpc_cred *cred) | |
1da177e4 LT |
3683 | { |
3684 | struct nfs_fsinfo fsinfo; | |
3685 | struct rpc_message msg = { | |
3686 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 3687 | .rpc_argp = arg, |
1da177e4 | 3688 | .rpc_resp = &fsinfo, |
286d7d6a | 3689 | .rpc_cred = cred, |
1da177e4 LT |
3690 | }; |
3691 | unsigned long now; | |
3692 | int status; | |
3693 | ||
3694 | now = jiffies; | |
3695 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3696 | if (status == 0) { | |
3697 | spin_lock(&clp->cl_lock); | |
3698 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
3699 | clp->cl_last_renewal = now; | |
3700 | spin_unlock(&clp->cl_lock); | |
3701 | } | |
3702 | return status; | |
3703 | } | |
3704 | ||
bb8b27e5 TM |
3705 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
3706 | struct nfs4_setclientid_res *arg, | |
3707 | struct rpc_cred *cred) | |
51581f3b | 3708 | { |
77e03677 | 3709 | long timeout = 0; |
51581f3b TM |
3710 | int err; |
3711 | do { | |
bb8b27e5 | 3712 | err = _nfs4_proc_setclientid_confirm(clp, arg, cred); |
51581f3b TM |
3713 | switch (err) { |
3714 | case 0: | |
3715 | return err; | |
3716 | case -NFS4ERR_RESOURCE: | |
3717 | /* The IBM lawyers misread another document! */ | |
3718 | case -NFS4ERR_DELAY: | |
3719 | err = nfs4_delay(clp->cl_rpcclient, &timeout); | |
3720 | } | |
3721 | } while (err == 0); | |
3722 | return err; | |
3723 | } | |
3724 | ||
fe650407 TM |
3725 | struct nfs4_delegreturndata { |
3726 | struct nfs4_delegreturnargs args; | |
fa178f29 | 3727 | struct nfs4_delegreturnres res; |
fe650407 TM |
3728 | struct nfs_fh fh; |
3729 | nfs4_stateid stateid; | |
26e976a8 | 3730 | unsigned long timestamp; |
fa178f29 | 3731 | struct nfs_fattr fattr; |
fe650407 TM |
3732 | int rpc_status; |
3733 | }; | |
3734 | ||
fe650407 TM |
3735 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
3736 | { | |
3737 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 3738 | |
14516c3a TM |
3739 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
3740 | return; | |
938e1010 | 3741 | |
79708861 RL |
3742 | switch (task->tk_status) { |
3743 | case -NFS4ERR_STALE_STATEID: | |
3744 | case -NFS4ERR_EXPIRED: | |
3745 | case 0: | |
fa178f29 | 3746 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
3747 | break; |
3748 | default: | |
3749 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
3750 | -EAGAIN) { | |
3751 | nfs_restart_rpc(task, data->res.server->nfs_client); | |
3752 | return; | |
3753 | } | |
3754 | } | |
3755 | data->rpc_status = task->tk_status; | |
fe650407 TM |
3756 | } |
3757 | ||
3758 | static void nfs4_delegreturn_release(void *calldata) | |
3759 | { | |
fe650407 TM |
3760 | kfree(calldata); |
3761 | } | |
3762 | ||
938e1010 AA |
3763 | #if defined(CONFIG_NFS_V4_1) |
3764 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
3765 | { | |
3766 | struct nfs4_delegreturndata *d_data; | |
3767 | ||
3768 | d_data = (struct nfs4_delegreturndata *)data; | |
3769 | ||
035168ab | 3770 | if (nfs4_setup_sequence(d_data->res.server, |
938e1010 AA |
3771 | &d_data->args.seq_args, |
3772 | &d_data->res.seq_res, 1, task)) | |
3773 | return; | |
3774 | rpc_call_start(task); | |
3775 | } | |
3776 | #endif /* CONFIG_NFS_V4_1 */ | |
3777 | ||
c8d149f3 | 3778 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
3779 | #if defined(CONFIG_NFS_V4_1) |
3780 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
3781 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
3782 | .rpc_call_done = nfs4_delegreturn_done, |
3783 | .rpc_release = nfs4_delegreturn_release, | |
3784 | }; | |
3785 | ||
e6f81075 | 3786 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
3787 | { |
3788 | struct nfs4_delegreturndata *data; | |
fa178f29 | 3789 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 3790 | struct rpc_task *task; |
5138fde0 TM |
3791 | struct rpc_message msg = { |
3792 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
3793 | .rpc_cred = cred, | |
3794 | }; | |
c970aa85 TM |
3795 | struct rpc_task_setup task_setup_data = { |
3796 | .rpc_client = server->client, | |
5138fde0 | 3797 | .rpc_message = &msg, |
c970aa85 TM |
3798 | .callback_ops = &nfs4_delegreturn_ops, |
3799 | .flags = RPC_TASK_ASYNC, | |
3800 | }; | |
e6f81075 | 3801 | int status = 0; |
fe650407 | 3802 | |
8535b2be | 3803 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
3804 | if (data == NULL) |
3805 | return -ENOMEM; | |
3806 | data->args.fhandle = &data->fh; | |
3807 | data->args.stateid = &data->stateid; | |
fa178f29 | 3808 | data->args.bitmask = server->attr_bitmask; |
fe650407 TM |
3809 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
3810 | memcpy(&data->stateid, stateid, sizeof(data->stateid)); | |
fa178f29 TM |
3811 | data->res.fattr = &data->fattr; |
3812 | data->res.server = server; | |
5138fde0 | 3813 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 3814 | data->timestamp = jiffies; |
fe650407 TM |
3815 | data->rpc_status = 0; |
3816 | ||
c970aa85 | 3817 | task_setup_data.callback_data = data; |
1174dd1f TM |
3818 | msg.rpc_argp = &data->args; |
3819 | msg.rpc_resp = &data->res; | |
c970aa85 | 3820 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 3821 | if (IS_ERR(task)) |
fe650407 | 3822 | return PTR_ERR(task); |
e6f81075 TM |
3823 | if (!issync) |
3824 | goto out; | |
fe650407 | 3825 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
3826 | if (status != 0) |
3827 | goto out; | |
3828 | status = data->rpc_status; | |
3829 | if (status != 0) | |
3830 | goto out; | |
3831 | nfs_refresh_inode(inode, &data->fattr); | |
3832 | out: | |
e6b3c4db | 3833 | rpc_put_task(task); |
fe650407 | 3834 | return status; |
1da177e4 LT |
3835 | } |
3836 | ||
e6f81075 | 3837 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
3838 | { |
3839 | struct nfs_server *server = NFS_SERVER(inode); | |
3840 | struct nfs4_exception exception = { }; | |
3841 | int err; | |
3842 | do { | |
e6f81075 | 3843 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
3844 | switch (err) { |
3845 | case -NFS4ERR_STALE_STATEID: | |
3846 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
3847 | case 0: |
3848 | return 0; | |
3849 | } | |
3850 | err = nfs4_handle_exception(server, err, &exception); | |
3851 | } while (exception.retry); | |
3852 | return err; | |
3853 | } | |
3854 | ||
3855 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
3856 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
3857 | ||
3858 | /* | |
3859 | * sleep, with exponential backoff, and retry the LOCK operation. | |
3860 | */ | |
3861 | static unsigned long | |
3862 | nfs4_set_lock_task_retry(unsigned long timeout) | |
3863 | { | |
150030b7 | 3864 | schedule_timeout_killable(timeout); |
1da177e4 LT |
3865 | timeout <<= 1; |
3866 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
3867 | return NFS4_LOCK_MAXTIMEOUT; | |
3868 | return timeout; | |
3869 | } | |
3870 | ||
1da177e4 LT |
3871 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
3872 | { | |
3873 | struct inode *inode = state->inode; | |
3874 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 3875 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 3876 | struct nfs_lockt_args arg = { |
1da177e4 | 3877 | .fh = NFS_FH(inode), |
911d1aaf | 3878 | .fl = request, |
1da177e4 | 3879 | }; |
911d1aaf TM |
3880 | struct nfs_lockt_res res = { |
3881 | .denied = request, | |
1da177e4 LT |
3882 | }; |
3883 | struct rpc_message msg = { | |
3884 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
3885 | .rpc_argp = &arg, | |
3886 | .rpc_resp = &res, | |
3887 | .rpc_cred = state->owner->so_cred, | |
3888 | }; | |
1da177e4 LT |
3889 | struct nfs4_lock_state *lsp; |
3890 | int status; | |
3891 | ||
911d1aaf | 3892 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
3893 | status = nfs4_set_lock_state(state, request); |
3894 | if (status != 0) | |
3895 | goto out; | |
3896 | lsp = request->fl_u.nfs4_fl.owner; | |
9f958ab8 | 3897 | arg.lock_owner.id = lsp->ls_id.id; |
d035c36c | 3898 | arg.lock_owner.s_dev = server->s_dev; |
cccef3b9 | 3899 | status = nfs4_call_sync(server, &msg, &arg, &res, 1); |
911d1aaf TM |
3900 | switch (status) { |
3901 | case 0: | |
3902 | request->fl_type = F_UNLCK; | |
3903 | break; | |
3904 | case -NFS4ERR_DENIED: | |
3905 | status = 0; | |
1da177e4 | 3906 | } |
70cc6487 | 3907 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 3908 | out: |
1da177e4 LT |
3909 | return status; |
3910 | } | |
3911 | ||
3912 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3913 | { | |
3914 | struct nfs4_exception exception = { }; | |
3915 | int err; | |
3916 | ||
3917 | do { | |
3918 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
3919 | _nfs4_proc_getlk(state, cmd, request), | |
3920 | &exception); | |
3921 | } while (exception.retry); | |
3922 | return err; | |
3923 | } | |
3924 | ||
3925 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
3926 | { | |
3927 | int res = 0; | |
3928 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
3929 | case FL_POSIX: | |
3930 | res = posix_lock_file_wait(file, fl); | |
3931 | break; | |
3932 | case FL_FLOCK: | |
3933 | res = flock_lock_file_wait(file, fl); | |
3934 | break; | |
3935 | default: | |
3936 | BUG(); | |
3937 | } | |
1da177e4 LT |
3938 | return res; |
3939 | } | |
3940 | ||
faf5f49c | 3941 | struct nfs4_unlockdata { |
911d1aaf TM |
3942 | struct nfs_locku_args arg; |
3943 | struct nfs_locku_res res; | |
faf5f49c TM |
3944 | struct nfs4_lock_state *lsp; |
3945 | struct nfs_open_context *ctx; | |
911d1aaf TM |
3946 | struct file_lock fl; |
3947 | const struct nfs_server *server; | |
26e976a8 | 3948 | unsigned long timestamp; |
faf5f49c TM |
3949 | }; |
3950 | ||
911d1aaf TM |
3951 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
3952 | struct nfs_open_context *ctx, | |
3953 | struct nfs4_lock_state *lsp, | |
3954 | struct nfs_seqid *seqid) | |
3955 | { | |
3956 | struct nfs4_unlockdata *p; | |
3957 | struct inode *inode = lsp->ls_state->inode; | |
3958 | ||
8535b2be | 3959 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
3960 | if (p == NULL) |
3961 | return NULL; | |
3962 | p->arg.fh = NFS_FH(inode); | |
3963 | p->arg.fl = &p->fl; | |
3964 | p->arg.seqid = seqid; | |
c1d51931 | 3965 | p->res.seqid = seqid; |
911d1aaf TM |
3966 | p->arg.stateid = &lsp->ls_stateid; |
3967 | p->lsp = lsp; | |
3968 | atomic_inc(&lsp->ls_count); | |
3969 | /* Ensure we don't close file until we're done freeing locks! */ | |
3970 | p->ctx = get_nfs_open_context(ctx); | |
3971 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
3972 | p->server = NFS_SERVER(inode); | |
3973 | return p; | |
3974 | } | |
3975 | ||
06f814a3 | 3976 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 3977 | { |
963d8fe5 | 3978 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 3979 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
3980 | nfs4_put_lock_state(calldata->lsp); |
3981 | put_nfs_open_context(calldata->ctx); | |
3982 | kfree(calldata); | |
faf5f49c TM |
3983 | } |
3984 | ||
963d8fe5 | 3985 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 3986 | { |
963d8fe5 | 3987 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 3988 | |
14516c3a TM |
3989 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
3990 | return; | |
faf5f49c TM |
3991 | switch (task->tk_status) { |
3992 | case 0: | |
3993 | memcpy(calldata->lsp->ls_stateid.data, | |
911d1aaf | 3994 | calldata->res.stateid.data, |
faf5f49c | 3995 | sizeof(calldata->lsp->ls_stateid.data)); |
26e976a8 | 3996 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 3997 | break; |
9e33bed5 TM |
3998 | case -NFS4ERR_BAD_STATEID: |
3999 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4000 | case -NFS4ERR_STALE_STATEID: |
4001 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4002 | break; |
4003 | default: | |
9e33bed5 | 4004 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
0110ee15 | 4005 | nfs_restart_rpc(task, |
d61e612a | 4006 | calldata->server->nfs_client); |
faf5f49c | 4007 | } |
faf5f49c TM |
4008 | } |
4009 | ||
4ce70ada | 4010 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4011 | { |
4ce70ada | 4012 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4013 | |
911d1aaf | 4014 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
4015 | return; |
4016 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
4017 | /* Note: exit _without_ running nfs4_locku_done */ |
4018 | task->tk_action = NULL; | |
faf5f49c TM |
4019 | return; |
4020 | } | |
26e976a8 | 4021 | calldata->timestamp = jiffies; |
035168ab | 4022 | if (nfs4_setup_sequence(calldata->server, |
a893693c AA |
4023 | &calldata->arg.seq_args, |
4024 | &calldata->res.seq_res, 1, task)) | |
4025 | return; | |
5138fde0 | 4026 | rpc_call_start(task); |
faf5f49c TM |
4027 | } |
4028 | ||
963d8fe5 | 4029 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4030 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4031 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4032 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4033 | }; |
4034 | ||
a5d16a4d TM |
4035 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4036 | struct nfs_open_context *ctx, | |
4037 | struct nfs4_lock_state *lsp, | |
4038 | struct nfs_seqid *seqid) | |
4039 | { | |
4040 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4041 | struct rpc_message msg = { |
4042 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4043 | .rpc_cred = ctx->cred, | |
4044 | }; | |
c970aa85 TM |
4045 | struct rpc_task_setup task_setup_data = { |
4046 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4047 | .rpc_message = &msg, |
c970aa85 | 4048 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4049 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4050 | .flags = RPC_TASK_ASYNC, |
4051 | }; | |
a5d16a4d | 4052 | |
137d6aca FF |
4053 | /* Ensure this is an unlock - when canceling a lock, the |
4054 | * canceled lock is passed in, and it won't be an unlock. | |
4055 | */ | |
4056 | fl->fl_type = F_UNLCK; | |
4057 | ||
a5d16a4d TM |
4058 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4059 | if (data == NULL) { | |
4060 | nfs_free_seqid(seqid); | |
4061 | return ERR_PTR(-ENOMEM); | |
4062 | } | |
4063 | ||
1174dd1f TM |
4064 | msg.rpc_argp = &data->arg; |
4065 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4066 | task_setup_data.callback_data = data; |
4067 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4068 | } |
4069 | ||
faf5f49c TM |
4070 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4071 | { | |
19e03c57 | 4072 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 4073 | struct nfs_seqid *seqid; |
1da177e4 | 4074 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4075 | struct rpc_task *task; |
4076 | int status = 0; | |
536ff0f8 | 4077 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4078 | |
8d0a8a9d | 4079 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4080 | /* Unlock _before_ we do the RPC call */ |
4081 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
4082 | down_read(&nfsi->rwsem); |
4083 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4084 | up_read(&nfsi->rwsem); | |
9b073574 | 4085 | goto out; |
19e03c57 TM |
4086 | } |
4087 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 4088 | if (status != 0) |
9b073574 TM |
4089 | goto out; |
4090 | /* Is this a delegated lock? */ | |
4091 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
4092 | goto out; | |
8d0a8a9d | 4093 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 4094 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4095 | status = -ENOMEM; |
911d1aaf | 4096 | if (seqid == NULL) |
9b073574 | 4097 | goto out; |
cd3758e3 | 4098 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4099 | status = PTR_ERR(task); |
4100 | if (IS_ERR(task)) | |
9b073574 | 4101 | goto out; |
a5d16a4d | 4102 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4103 | rpc_put_task(task); |
9b073574 | 4104 | out: |
536ff0f8 | 4105 | request->fl_flags = fl_flags; |
1da177e4 LT |
4106 | return status; |
4107 | } | |
4108 | ||
a5d16a4d TM |
4109 | struct nfs4_lockdata { |
4110 | struct nfs_lock_args arg; | |
4111 | struct nfs_lock_res res; | |
4112 | struct nfs4_lock_state *lsp; | |
4113 | struct nfs_open_context *ctx; | |
4114 | struct file_lock fl; | |
26e976a8 | 4115 | unsigned long timestamp; |
a5d16a4d TM |
4116 | int rpc_status; |
4117 | int cancelled; | |
66179efe | 4118 | struct nfs_server *server; |
a5d16a4d TM |
4119 | }; |
4120 | ||
4121 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4122 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4123 | gfp_t gfp_mask) | |
1da177e4 | 4124 | { |
a5d16a4d TM |
4125 | struct nfs4_lockdata *p; |
4126 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4127 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4128 | |
8535b2be | 4129 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4130 | if (p == NULL) |
4131 | return NULL; | |
4132 | ||
4133 | p->arg.fh = NFS_FH(inode); | |
4134 | p->arg.fl = &p->fl; | |
8535b2be | 4135 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4136 | if (p->arg.open_seqid == NULL) |
4137 | goto out_free; | |
8535b2be | 4138 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4139 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4140 | goto out_free_seqid; |
a5d16a4d | 4141 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4142 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 4143 | p->arg.lock_owner.id = lsp->ls_id.id; |
d035c36c | 4144 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4145 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4146 | p->lsp = lsp; |
66179efe | 4147 | p->server = server; |
a5d16a4d TM |
4148 | atomic_inc(&lsp->ls_count); |
4149 | p->ctx = get_nfs_open_context(ctx); | |
4150 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4151 | return p; | |
2f74c0a0 TM |
4152 | out_free_seqid: |
4153 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4154 | out_free: |
4155 | kfree(p); | |
4156 | return NULL; | |
4157 | } | |
4158 | ||
4159 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4160 | { | |
4161 | struct nfs4_lockdata *data = calldata; | |
4162 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4163 | |
3110ff80 | 4164 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
4165 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
4166 | return; | |
a5d16a4d TM |
4167 | /* Do we need to do an open_to_lock_owner? */ |
4168 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
4169 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
4170 | return; | |
a5d16a4d TM |
4171 | data->arg.open_stateid = &state->stateid; |
4172 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4173 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4174 | } else |
4175 | data->arg.new_lock_owner = 0; | |
26e976a8 | 4176 | data->timestamp = jiffies; |
035168ab TM |
4177 | if (nfs4_setup_sequence(data->server, |
4178 | &data->arg.seq_args, | |
66179efe AA |
4179 | &data->res.seq_res, 1, task)) |
4180 | return; | |
5138fde0 | 4181 | rpc_call_start(task); |
3110ff80 | 4182 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
a5d16a4d TM |
4183 | } |
4184 | ||
b257957e AB |
4185 | static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata) |
4186 | { | |
4187 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
4188 | nfs4_lock_prepare(task, calldata); | |
4189 | } | |
4190 | ||
a5d16a4d TM |
4191 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4192 | { | |
4193 | struct nfs4_lockdata *data = calldata; | |
4194 | ||
3110ff80 | 4195 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4196 | |
14516c3a TM |
4197 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4198 | return; | |
66179efe | 4199 | |
a5d16a4d | 4200 | data->rpc_status = task->tk_status; |
a5d16a4d | 4201 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4202 | if (data->rpc_status == 0) |
4203 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4204 | else | |
4205 | goto out; | |
4206 | } | |
4207 | if (data->rpc_status == 0) { | |
4208 | memcpy(data->lsp->ls_stateid.data, data->res.stateid.data, | |
4209 | sizeof(data->lsp->ls_stateid.data)); | |
4210 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; | |
88be9f99 | 4211 | renew_lease(NFS_SERVER(data->ctx->path.dentry->d_inode), data->timestamp); |
a5d16a4d | 4212 | } |
a5d16a4d | 4213 | out: |
3110ff80 | 4214 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4215 | } |
4216 | ||
4217 | static void nfs4_lock_release(void *calldata) | |
4218 | { | |
4219 | struct nfs4_lockdata *data = calldata; | |
4220 | ||
3110ff80 | 4221 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4222 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4223 | if (data->cancelled != 0) { |
4224 | struct rpc_task *task; | |
4225 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4226 | data->arg.lock_seqid); | |
4227 | if (!IS_ERR(task)) | |
bf294b41 | 4228 | rpc_put_task_async(task); |
3110ff80 | 4229 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4230 | } else |
4231 | nfs_free_seqid(data->arg.lock_seqid); | |
4232 | nfs4_put_lock_state(data->lsp); | |
4233 | put_nfs_open_context(data->ctx); | |
4234 | kfree(data); | |
3110ff80 | 4235 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4236 | } |
4237 | ||
4238 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4239 | .rpc_call_prepare = nfs4_lock_prepare, | |
4240 | .rpc_call_done = nfs4_lock_done, | |
4241 | .rpc_release = nfs4_lock_release, | |
4242 | }; | |
4243 | ||
b257957e AB |
4244 | static const struct rpc_call_ops nfs4_recover_lock_ops = { |
4245 | .rpc_call_prepare = nfs4_recover_lock_prepare, | |
4246 | .rpc_call_done = nfs4_lock_done, | |
4247 | .rpc_release = nfs4_lock_release, | |
4248 | }; | |
4249 | ||
2bee72a6 TM |
4250 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4251 | { | |
2bee72a6 TM |
4252 | switch (error) { |
4253 | case -NFS4ERR_ADMIN_REVOKED: | |
4254 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4255 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 TM |
4256 | if (new_lock_owner != 0 || |
4257 | (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) | |
ecac799a | 4258 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4259 | break; |
4260 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4261 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4262 | case -NFS4ERR_EXPIRED: |
4263 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4264 | }; |
4265 | } | |
4266 | ||
afe6c27c | 4267 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4268 | { |
4269 | struct nfs4_lockdata *data; | |
4270 | struct rpc_task *task; | |
5138fde0 TM |
4271 | struct rpc_message msg = { |
4272 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4273 | .rpc_cred = state->owner->so_cred, | |
4274 | }; | |
c970aa85 TM |
4275 | struct rpc_task_setup task_setup_data = { |
4276 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4277 | .rpc_message = &msg, |
c970aa85 | 4278 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4279 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4280 | .flags = RPC_TASK_ASYNC, |
4281 | }; | |
a5d16a4d TM |
4282 | int ret; |
4283 | ||
3110ff80 | 4284 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4285 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4286 | fl->fl_u.nfs4_fl.owner, |
4287 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4288 | if (data == NULL) |
4289 | return -ENOMEM; | |
4290 | if (IS_SETLKW(cmd)) | |
4291 | data->arg.block = 1; | |
b257957e AB |
4292 | if (recovery_type > NFS_LOCK_NEW) { |
4293 | if (recovery_type == NFS_LOCK_RECLAIM) | |
afe6c27c | 4294 | data->arg.reclaim = NFS_LOCK_RECLAIM; |
b257957e AB |
4295 | task_setup_data.callback_ops = &nfs4_recover_lock_ops; |
4296 | } | |
1174dd1f TM |
4297 | msg.rpc_argp = &data->arg; |
4298 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4299 | task_setup_data.callback_data = data; |
4300 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 4301 | if (IS_ERR(task)) |
a5d16a4d | 4302 | return PTR_ERR(task); |
a5d16a4d TM |
4303 | ret = nfs4_wait_for_completion_rpc_task(task); |
4304 | if (ret == 0) { | |
4305 | ret = data->rpc_status; | |
2bee72a6 TM |
4306 | if (ret) |
4307 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4308 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4309 | } else |
4310 | data->cancelled = 1; | |
e6b3c4db | 4311 | rpc_put_task(task); |
3110ff80 | 4312 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4313 | return ret; |
1da177e4 LT |
4314 | } |
4315 | ||
4316 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4317 | { | |
202b50dc TM |
4318 | struct nfs_server *server = NFS_SERVER(state->inode); |
4319 | struct nfs4_exception exception = { }; | |
4320 | int err; | |
4321 | ||
4322 | do { | |
42a2d13e TM |
4323 | /* Cache the lock if possible... */ |
4324 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4325 | return 0; | |
afe6c27c | 4326 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4327 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4328 | break; |
4329 | nfs4_handle_exception(server, err, &exception); | |
4330 | } while (exception.retry); | |
4331 | return err; | |
1da177e4 LT |
4332 | } |
4333 | ||
4334 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4335 | { | |
202b50dc TM |
4336 | struct nfs_server *server = NFS_SERVER(state->inode); |
4337 | struct nfs4_exception exception = { }; | |
4338 | int err; | |
4339 | ||
6bfc93ef TM |
4340 | err = nfs4_set_lock_state(state, request); |
4341 | if (err != 0) | |
4342 | return err; | |
202b50dc | 4343 | do { |
42a2d13e TM |
4344 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4345 | return 0; | |
afe6c27c | 4346 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4347 | switch (err) { |
4348 | default: | |
4349 | goto out; | |
4350 | case -NFS4ERR_GRACE: | |
4351 | case -NFS4ERR_DELAY: | |
4352 | nfs4_handle_exception(server, err, &exception); | |
4353 | err = 0; | |
4354 | } | |
202b50dc | 4355 | } while (exception.retry); |
a9ed2e25 | 4356 | out: |
202b50dc | 4357 | return err; |
1da177e4 LT |
4358 | } |
4359 | ||
4360 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4361 | { | |
19e03c57 | 4362 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4363 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 4364 | int status = -ENOLCK; |
1da177e4 | 4365 | |
8e469ebd TM |
4366 | if ((fl_flags & FL_POSIX) && |
4367 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
4368 | goto out; | |
6bfc93ef | 4369 | /* Is this a delegated open? */ |
6bfc93ef TM |
4370 | status = nfs4_set_lock_state(state, request); |
4371 | if (status != 0) | |
4372 | goto out; | |
01c3b861 TM |
4373 | request->fl_flags |= FL_ACCESS; |
4374 | status = do_vfs_lock(request->fl_file, request); | |
4375 | if (status < 0) | |
4376 | goto out; | |
19e03c57 | 4377 | down_read(&nfsi->rwsem); |
01c3b861 | 4378 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4379 | /* Yes: cache locks! */ |
01c3b861 | 4380 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4381 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4382 | status = do_vfs_lock(request->fl_file, request); | |
4383 | goto out_unlock; | |
01c3b861 | 4384 | } |
afe6c27c | 4385 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 4386 | if (status != 0) |
01c3b861 | 4387 | goto out_unlock; |
6bfc93ef | 4388 | /* Note: we always want to sleep here! */ |
01c3b861 | 4389 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4390 | if (do_vfs_lock(request->fl_file, request) < 0) |
3110ff80 | 4391 | printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __func__); |
01c3b861 | 4392 | out_unlock: |
19e03c57 | 4393 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4394 | out: |
4395 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4396 | return status; |
4397 | } | |
4398 | ||
4399 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4400 | { | |
4401 | struct nfs4_exception exception = { }; | |
4402 | int err; | |
4403 | ||
4404 | do { | |
965b5d67 TM |
4405 | err = _nfs4_proc_setlk(state, cmd, request); |
4406 | if (err == -NFS4ERR_DENIED) | |
4407 | err = -EAGAIN; | |
1da177e4 | 4408 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4409 | err, &exception); |
1da177e4 LT |
4410 | } while (exception.retry); |
4411 | return err; | |
4412 | } | |
4413 | ||
4414 | static int | |
4415 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
4416 | { | |
4417 | struct nfs_open_context *ctx; | |
4418 | struct nfs4_state *state; | |
4419 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
4420 | int status; | |
4421 | ||
4422 | /* verify open state */ | |
cd3758e3 | 4423 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
4424 | state = ctx->state; |
4425 | ||
4426 | if (request->fl_start < 0 || request->fl_end < 0) | |
4427 | return -EINVAL; | |
4428 | ||
d953126a TM |
4429 | if (IS_GETLK(cmd)) { |
4430 | if (state != NULL) | |
4431 | return nfs4_proc_getlk(state, F_GETLK, request); | |
4432 | return 0; | |
4433 | } | |
1da177e4 LT |
4434 | |
4435 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
4436 | return -EINVAL; | |
4437 | ||
d953126a TM |
4438 | if (request->fl_type == F_UNLCK) { |
4439 | if (state != NULL) | |
4440 | return nfs4_proc_unlck(state, cmd, request); | |
4441 | return 0; | |
4442 | } | |
1da177e4 | 4443 | |
d953126a TM |
4444 | if (state == NULL) |
4445 | return -ENOLCK; | |
1da177e4 LT |
4446 | do { |
4447 | status = nfs4_proc_setlk(state, cmd, request); | |
4448 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
4449 | break; | |
4450 | timeout = nfs4_set_lock_task_retry(timeout); | |
4451 | status = -ERESTARTSYS; | |
4452 | if (signalled()) | |
4453 | break; | |
4454 | } while(status < 0); | |
1da177e4 LT |
4455 | return status; |
4456 | } | |
4457 | ||
888e694c TM |
4458 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
4459 | { | |
4460 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4461 | struct nfs4_exception exception = { }; | |
4462 | int err; | |
4463 | ||
4464 | err = nfs4_set_lock_state(state, fl); | |
4465 | if (err != 0) | |
4466 | goto out; | |
4467 | do { | |
afe6c27c | 4468 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
4469 | switch (err) { |
4470 | default: | |
4471 | printk(KERN_ERR "%s: unhandled error %d.\n", | |
4472 | __func__, err); | |
4473 | case 0: | |
965b5d67 | 4474 | case -ESTALE: |
d5122201 TM |
4475 | goto out; |
4476 | case -NFS4ERR_EXPIRED: | |
4477 | case -NFS4ERR_STALE_CLIENTID: | |
965b5d67 | 4478 | case -NFS4ERR_STALE_STATEID: |
0400a6b0 TM |
4479 | nfs4_schedule_lease_recovery(server->nfs_client); |
4480 | goto out; | |
74e7bb73 RL |
4481 | case -NFS4ERR_BADSESSION: |
4482 | case -NFS4ERR_BADSLOT: | |
4483 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4484 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4485 | case -NFS4ERR_DEADSESSION: | |
0400a6b0 | 4486 | nfs4_schedule_session_recovery(server->nfs_client->cl_session); |
d5122201 | 4487 | goto out; |
965b5d67 TM |
4488 | case -ERESTARTSYS: |
4489 | /* | |
4490 | * The show must go on: exit, but mark the | |
4491 | * stateid as needing recovery. | |
4492 | */ | |
4493 | case -NFS4ERR_ADMIN_REVOKED: | |
4494 | case -NFS4ERR_BAD_STATEID: | |
4495 | case -NFS4ERR_OPENMODE: | |
0400a6b0 | 4496 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
4497 | err = 0; |
4498 | goto out; | |
168667c4 TM |
4499 | case -EKEYEXPIRED: |
4500 | /* | |
4501 | * User RPCSEC_GSS context has expired. | |
4502 | * We cannot recover this stateid now, so | |
4503 | * skip it and allow recovery thread to | |
4504 | * proceed. | |
4505 | */ | |
4506 | err = 0; | |
4507 | goto out; | |
965b5d67 TM |
4508 | case -ENOMEM: |
4509 | case -NFS4ERR_DENIED: | |
4510 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
4511 | err = 0; | |
4512 | goto out; | |
d5122201 TM |
4513 | case -NFS4ERR_DELAY: |
4514 | break; | |
4515 | } | |
888e694c TM |
4516 | err = nfs4_handle_exception(server, err, &exception); |
4517 | } while (exception.retry); | |
4518 | out: | |
4519 | return err; | |
4520 | } | |
6b3b5496 | 4521 | |
d3c7b7cc TM |
4522 | static void nfs4_release_lockowner_release(void *calldata) |
4523 | { | |
4524 | kfree(calldata); | |
4525 | } | |
4526 | ||
4527 | const struct rpc_call_ops nfs4_release_lockowner_ops = { | |
4528 | .rpc_release = nfs4_release_lockowner_release, | |
4529 | }; | |
4530 | ||
4531 | void nfs4_release_lockowner(const struct nfs4_lock_state *lsp) | |
4532 | { | |
4533 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
4534 | struct nfs_release_lockowner_args *args; | |
4535 | struct rpc_message msg = { | |
4536 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
4537 | }; | |
4538 | ||
4539 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
4540 | return; | |
4541 | args = kmalloc(sizeof(*args), GFP_NOFS); | |
4542 | if (!args) | |
4543 | return; | |
4544 | args->lock_owner.clientid = server->nfs_client->cl_clientid; | |
4545 | args->lock_owner.id = lsp->ls_id.id; | |
d035c36c | 4546 | args->lock_owner.s_dev = server->s_dev; |
d3c7b7cc TM |
4547 | msg.rpc_argp = args; |
4548 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, args); | |
4549 | } | |
4550 | ||
aa1870af BF |
4551 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
4552 | ||
64c2ce8b AK |
4553 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
4554 | const void *buf, size_t buflen, | |
4555 | int flags, int type) | |
6b3b5496 | 4556 | { |
64c2ce8b AK |
4557 | if (strcmp(key, "") != 0) |
4558 | return -EINVAL; | |
4b580ee3 | 4559 | |
64c2ce8b | 4560 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4561 | } |
4562 | ||
64c2ce8b AK |
4563 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
4564 | void *buf, size_t buflen, int type) | |
6b3b5496 | 4565 | { |
64c2ce8b AK |
4566 | if (strcmp(key, "") != 0) |
4567 | return -EINVAL; | |
aa1870af | 4568 | |
64c2ce8b | 4569 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4570 | } |
4571 | ||
64c2ce8b AK |
4572 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
4573 | size_t list_len, const char *name, | |
4574 | size_t name_len, int type) | |
6b3b5496 | 4575 | { |
64c2ce8b | 4576 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 4577 | |
096455a2 BF |
4578 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
4579 | return 0; | |
64c2ce8b AK |
4580 | |
4581 | if (list && len <= list_len) | |
4582 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 4583 | return len; |
6b3b5496 BF |
4584 | } |
4585 | ||
69aaaae1 TM |
4586 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
4587 | { | |
4588 | if (!((fattr->valid & NFS_ATTR_FATTR_FILEID) && | |
4589 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
4590 | (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL))) | |
4591 | return; | |
4592 | ||
4593 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
4594 | NFS_ATTR_FATTR_NLINK; | |
4595 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; | |
4596 | fattr->nlink = 2; | |
4597 | } | |
4598 | ||
56659e99 | 4599 | int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, |
7aaa0b3b | 4600 | struct nfs4_fs_locations *fs_locations, struct page *page) |
683b57b4 TM |
4601 | { |
4602 | struct nfs_server *server = NFS_SERVER(dir); | |
4603 | u32 bitmask[2] = { | |
361e624f MN |
4604 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
4605 | [1] = FATTR4_WORD1_MOUNTED_ON_FILEID, | |
683b57b4 TM |
4606 | }; |
4607 | struct nfs4_fs_locations_arg args = { | |
4608 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 4609 | .name = name, |
683b57b4 TM |
4610 | .page = page, |
4611 | .bitmask = bitmask, | |
4612 | }; | |
22958463 BH |
4613 | struct nfs4_fs_locations_res res = { |
4614 | .fs_locations = fs_locations, | |
4615 | }; | |
683b57b4 TM |
4616 | struct rpc_message msg = { |
4617 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
4618 | .rpc_argp = &args, | |
22958463 | 4619 | .rpc_resp = &res, |
683b57b4 TM |
4620 | }; |
4621 | int status; | |
4622 | ||
3110ff80 | 4623 | dprintk("%s: start\n", __func__); |
c228fd3a | 4624 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 4625 | fs_locations->server = server; |
830b8e33 | 4626 | fs_locations->nlocations = 0; |
cccef3b9 | 4627 | status = nfs4_call_sync(server, &msg, &args, &res, 0); |
69aaaae1 | 4628 | nfs_fixup_referral_attributes(&fs_locations->fattr); |
3110ff80 | 4629 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
4630 | return status; |
4631 | } | |
4632 | ||
557134a3 | 4633 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
4634 | /* |
4635 | * Check the exchange flags returned by the server for invalid flags, having | |
4636 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
4637 | * DS flags set. | |
4638 | */ | |
4639 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
4640 | { | |
4641 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
4642 | goto out_inval; | |
4643 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
4644 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
4645 | goto out_inval; | |
4646 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
4647 | goto out_inval; | |
4648 | return NFS_OK; | |
4649 | out_inval: | |
4650 | return -NFS4ERR_INVAL; | |
4651 | } | |
4652 | ||
99fe60d0 BH |
4653 | /* |
4654 | * nfs4_proc_exchange_id() | |
4655 | * | |
4656 | * Since the clientid has expired, all compounds using sessions | |
4657 | * associated with the stale clientid will be returning | |
4658 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
4659 | * be in some phase of session reset. | |
4660 | */ | |
4d643d1d | 4661 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
4662 | { |
4663 | nfs4_verifier verifier; | |
4664 | struct nfs41_exchange_id_args args = { | |
4665 | .client = clp, | |
357f54d6 | 4666 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
4667 | }; |
4668 | struct nfs41_exchange_id_res res = { | |
4669 | .client = clp, | |
4670 | }; | |
4671 | int status; | |
4672 | struct rpc_message msg = { | |
4673 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
4674 | .rpc_argp = &args, | |
4675 | .rpc_resp = &res, | |
4676 | .rpc_cred = cred, | |
4677 | }; | |
4678 | __be32 *p; | |
4679 | ||
4680 | dprintk("--> %s\n", __func__); | |
4681 | BUG_ON(clp == NULL); | |
a7b72103 | 4682 | |
99fe60d0 BH |
4683 | p = (u32 *)verifier.data; |
4684 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); | |
4685 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
4686 | args.verifier = &verifier; | |
4687 | ||
c7a360b0 AA |
4688 | args.id_len = scnprintf(args.id, sizeof(args.id), |
4689 | "%s/%s.%s/%u", | |
4690 | clp->cl_ipaddr, | |
4691 | init_utsname()->nodename, | |
4692 | init_utsname()->domainname, | |
4693 | clp->cl_rpcclient->cl_auth->au_flavor); | |
99fe60d0 | 4694 | |
c7a360b0 AA |
4695 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); |
4696 | if (!status) | |
4697 | status = nfs4_check_cl_exchange_flags(clp->cl_exchange_flags); | |
99fe60d0 BH |
4698 | dprintk("<-- %s status= %d\n", __func__, status); |
4699 | return status; | |
4700 | } | |
4701 | ||
2050f0cc AA |
4702 | struct nfs4_get_lease_time_data { |
4703 | struct nfs4_get_lease_time_args *args; | |
4704 | struct nfs4_get_lease_time_res *res; | |
4705 | struct nfs_client *clp; | |
4706 | }; | |
4707 | ||
4708 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
4709 | void *calldata) | |
4710 | { | |
4711 | int ret; | |
4712 | struct nfs4_get_lease_time_data *data = | |
4713 | (struct nfs4_get_lease_time_data *)calldata; | |
4714 | ||
4715 | dprintk("--> %s\n", __func__); | |
689cf5c1 | 4716 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
2050f0cc AA |
4717 | /* just setup sequence, do not trigger session recovery |
4718 | since we're invoked within one */ | |
4719 | ret = nfs41_setup_sequence(data->clp->cl_session, | |
689cf5c1 AB |
4720 | &data->args->la_seq_args, |
4721 | &data->res->lr_seq_res, 0, task); | |
2050f0cc AA |
4722 | |
4723 | BUG_ON(ret == -EAGAIN); | |
4724 | rpc_call_start(task); | |
4725 | dprintk("<-- %s\n", __func__); | |
4726 | } | |
4727 | ||
4728 | /* | |
4729 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
4730 | * from sequence operation or clientid errors. | |
4731 | */ | |
4732 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
4733 | { | |
4734 | struct nfs4_get_lease_time_data *data = | |
4735 | (struct nfs4_get_lease_time_data *)calldata; | |
4736 | ||
4737 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
4738 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
4739 | return; | |
2050f0cc AA |
4740 | switch (task->tk_status) { |
4741 | case -NFS4ERR_DELAY: | |
4742 | case -NFS4ERR_GRACE: | |
4743 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
4744 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
4745 | task->tk_status = 0; | |
0110ee15 | 4746 | nfs_restart_rpc(task, data->clp); |
2050f0cc AA |
4747 | return; |
4748 | } | |
2050f0cc AA |
4749 | dprintk("<-- %s\n", __func__); |
4750 | } | |
4751 | ||
4752 | struct rpc_call_ops nfs4_get_lease_time_ops = { | |
4753 | .rpc_call_prepare = nfs4_get_lease_time_prepare, | |
4754 | .rpc_call_done = nfs4_get_lease_time_done, | |
4755 | }; | |
4756 | ||
4757 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
4758 | { | |
4759 | struct rpc_task *task; | |
4760 | struct nfs4_get_lease_time_args args; | |
4761 | struct nfs4_get_lease_time_res res = { | |
4762 | .lr_fsinfo = fsinfo, | |
4763 | }; | |
4764 | struct nfs4_get_lease_time_data data = { | |
4765 | .args = &args, | |
4766 | .res = &res, | |
4767 | .clp = clp, | |
4768 | }; | |
4769 | struct rpc_message msg = { | |
4770 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
4771 | .rpc_argp = &args, | |
4772 | .rpc_resp = &res, | |
4773 | }; | |
4774 | struct rpc_task_setup task_setup = { | |
4775 | .rpc_client = clp->cl_rpcclient, | |
4776 | .rpc_message = &msg, | |
4777 | .callback_ops = &nfs4_get_lease_time_ops, | |
4778 | .callback_data = &data | |
4779 | }; | |
4780 | int status; | |
4781 | ||
2050f0cc AA |
4782 | dprintk("--> %s\n", __func__); |
4783 | task = rpc_run_task(&task_setup); | |
4784 | ||
4785 | if (IS_ERR(task)) | |
4786 | status = PTR_ERR(task); | |
4787 | else { | |
4788 | status = task->tk_status; | |
4789 | rpc_put_task(task); | |
4790 | } | |
4791 | dprintk("<-- %s return %d\n", __func__, status); | |
4792 | ||
4793 | return status; | |
4794 | } | |
4795 | ||
b73dafa7 RL |
4796 | /* |
4797 | * Reset a slot table | |
4798 | */ | |
104aeba4 AA |
4799 | static int nfs4_reset_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs, |
4800 | int ivalue) | |
ac72b7b3 | 4801 | { |
104aeba4 | 4802 | struct nfs4_slot *new = NULL; |
b73dafa7 | 4803 | int i; |
ac72b7b3 AA |
4804 | int ret = 0; |
4805 | ||
104aeba4 AA |
4806 | dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__, |
4807 | max_reqs, tbl->max_slots); | |
ac72b7b3 | 4808 | |
104aeba4 AA |
4809 | /* Does the newly negotiated max_reqs match the existing slot table? */ |
4810 | if (max_reqs != tbl->max_slots) { | |
4811 | ret = -ENOMEM; | |
4812 | new = kmalloc(max_reqs * sizeof(struct nfs4_slot), | |
8535b2be | 4813 | GFP_NOFS); |
104aeba4 AA |
4814 | if (!new) |
4815 | goto out; | |
4816 | ret = 0; | |
4817 | kfree(tbl->slots); | |
ac72b7b3 AA |
4818 | } |
4819 | spin_lock(&tbl->slot_tbl_lock); | |
104aeba4 AA |
4820 | if (new) { |
4821 | tbl->slots = new; | |
4822 | tbl->max_slots = max_reqs; | |
4823 | } | |
4824 | for (i = 0; i < tbl->max_slots; ++i) | |
b73dafa7 | 4825 | tbl->slots[i].seq_nr = ivalue; |
ac72b7b3 AA |
4826 | spin_unlock(&tbl->slot_tbl_lock); |
4827 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
4828 | tbl, tbl->slots, tbl->max_slots); | |
4829 | out: | |
4830 | dprintk("<-- %s: return %d\n", __func__, ret); | |
4831 | return ret; | |
4832 | } | |
4833 | ||
b73dafa7 RL |
4834 | /* |
4835 | * Reset the forechannel and backchannel slot tables | |
4836 | */ | |
4837 | static int nfs4_reset_slot_tables(struct nfs4_session *session) | |
4838 | { | |
4839 | int status; | |
4840 | ||
4841 | status = nfs4_reset_slot_table(&session->fc_slot_table, | |
104aeba4 | 4842 | session->fc_attrs.max_reqs, 1); |
f8625a6a RL |
4843 | if (status) |
4844 | return status; | |
4845 | ||
4846 | status = nfs4_reset_slot_table(&session->bc_slot_table, | |
104aeba4 | 4847 | session->bc_attrs.max_reqs, 0); |
b73dafa7 RL |
4848 | return status; |
4849 | } | |
4850 | ||
f8625a6a RL |
4851 | /* Destroy the slot table */ |
4852 | static void nfs4_destroy_slot_tables(struct nfs4_session *session) | |
4853 | { | |
4854 | if (session->fc_slot_table.slots != NULL) { | |
4855 | kfree(session->fc_slot_table.slots); | |
4856 | session->fc_slot_table.slots = NULL; | |
4857 | } | |
4858 | if (session->bc_slot_table.slots != NULL) { | |
4859 | kfree(session->bc_slot_table.slots); | |
4860 | session->bc_slot_table.slots = NULL; | |
4861 | } | |
4862 | return; | |
4863 | } | |
4864 | ||
fc931582 AA |
4865 | /* |
4866 | * Initialize slot table | |
4867 | */ | |
050047ce RL |
4868 | static int nfs4_init_slot_table(struct nfs4_slot_table *tbl, |
4869 | int max_slots, int ivalue) | |
fc931582 | 4870 | { |
fc931582 AA |
4871 | struct nfs4_slot *slot; |
4872 | int ret = -ENOMEM; | |
4873 | ||
4874 | BUG_ON(max_slots > NFS4_MAX_SLOT_TABLE); | |
4875 | ||
050047ce | 4876 | dprintk("--> %s: max_reqs=%u\n", __func__, max_slots); |
fc931582 | 4877 | |
8535b2be | 4878 | slot = kcalloc(max_slots, sizeof(struct nfs4_slot), GFP_NOFS); |
fc931582 AA |
4879 | if (!slot) |
4880 | goto out; | |
fc931582 AA |
4881 | ret = 0; |
4882 | ||
4883 | spin_lock(&tbl->slot_tbl_lock); | |
fc931582 AA |
4884 | tbl->max_slots = max_slots; |
4885 | tbl->slots = slot; | |
4886 | tbl->highest_used_slotid = -1; /* no slot is currently used */ | |
4887 | spin_unlock(&tbl->slot_tbl_lock); | |
4888 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
4889 | tbl, tbl->slots, tbl->max_slots); | |
4890 | out: | |
4891 | dprintk("<-- %s: return %d\n", __func__, ret); | |
4892 | return ret; | |
fc931582 AA |
4893 | } |
4894 | ||
050047ce RL |
4895 | /* |
4896 | * Initialize the forechannel and backchannel tables | |
4897 | */ | |
4898 | static int nfs4_init_slot_tables(struct nfs4_session *session) | |
4899 | { | |
f26468fb TM |
4900 | struct nfs4_slot_table *tbl; |
4901 | int status = 0; | |
050047ce | 4902 | |
f26468fb TM |
4903 | tbl = &session->fc_slot_table; |
4904 | if (tbl->slots == NULL) { | |
4905 | status = nfs4_init_slot_table(tbl, | |
4906 | session->fc_attrs.max_reqs, 1); | |
4907 | if (status) | |
4908 | return status; | |
4909 | } | |
050047ce | 4910 | |
f26468fb TM |
4911 | tbl = &session->bc_slot_table; |
4912 | if (tbl->slots == NULL) { | |
4913 | status = nfs4_init_slot_table(tbl, | |
4914 | session->bc_attrs.max_reqs, 0); | |
4915 | if (status) | |
4916 | nfs4_destroy_slot_tables(session); | |
4917 | } | |
f8625a6a RL |
4918 | |
4919 | return status; | |
557134a3 AA |
4920 | } |
4921 | ||
4922 | struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) | |
4923 | { | |
4924 | struct nfs4_session *session; | |
4925 | struct nfs4_slot_table *tbl; | |
4926 | ||
8535b2be | 4927 | session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); |
557134a3 AA |
4928 | if (!session) |
4929 | return NULL; | |
76db6d95 | 4930 | |
557134a3 | 4931 | tbl = &session->fc_slot_table; |
9dfdf404 | 4932 | tbl->highest_used_slotid = -1; |
557134a3 | 4933 | spin_lock_init(&tbl->slot_tbl_lock); |
689cf5c1 | 4934 | rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); |
42acd021 | 4935 | init_completion(&tbl->complete); |
f8625a6a RL |
4936 | |
4937 | tbl = &session->bc_slot_table; | |
9dfdf404 | 4938 | tbl->highest_used_slotid = -1; |
f8625a6a RL |
4939 | spin_lock_init(&tbl->slot_tbl_lock); |
4940 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); | |
42acd021 | 4941 | init_completion(&tbl->complete); |
f8625a6a | 4942 | |
1055d76d TM |
4943 | session->session_state = 1<<NFS4_SESSION_INITING; |
4944 | ||
557134a3 AA |
4945 | session->clp = clp; |
4946 | return session; | |
4947 | } | |
4948 | ||
4949 | void nfs4_destroy_session(struct nfs4_session *session) | |
4950 | { | |
5a0ffe54 AA |
4951 | nfs4_proc_destroy_session(session); |
4952 | dprintk("%s Destroy backchannel for xprt %p\n", | |
4953 | __func__, session->clp->cl_rpcclient->cl_xprt); | |
4954 | xprt_destroy_backchannel(session->clp->cl_rpcclient->cl_xprt, | |
4955 | NFS41_BC_MIN_CALLBACKS); | |
f8625a6a | 4956 | nfs4_destroy_slot_tables(session); |
557134a3 AA |
4957 | kfree(session); |
4958 | } | |
4959 | ||
fc931582 AA |
4960 | /* |
4961 | * Initialize the values to be used by the client in CREATE_SESSION | |
4962 | * If nfs4_init_session set the fore channel request and response sizes, | |
4963 | * use them. | |
4964 | * | |
4965 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
4966 | * always set csa_cachethis to FALSE because the current implementation | |
4967 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
4968 | */ | |
4969 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
4970 | { | |
4971 | struct nfs4_session *session = args->client->cl_session; | |
4972 | unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz, | |
4973 | mxresp_sz = session->fc_attrs.max_resp_sz; | |
4974 | ||
4975 | if (mxrqst_sz == 0) | |
4976 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
4977 | if (mxresp_sz == 0) | |
4978 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
4979 | /* Fore channel attributes */ | |
4980 | args->fc_attrs.headerpadsz = 0; | |
4981 | args->fc_attrs.max_rqst_sz = mxrqst_sz; | |
4982 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 AA |
4983 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
4984 | args->fc_attrs.max_reqs = session->clp->cl_rpcclient->cl_xprt->max_reqs; | |
4985 | ||
4986 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 4987 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
4988 | __func__, |
4989 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 4990 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
4991 | |
4992 | /* Back channel attributes */ | |
4993 | args->bc_attrs.headerpadsz = 0; | |
4994 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; | |
4995 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
4996 | args->bc_attrs.max_resp_sz_cached = 0; | |
4997 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
4998 | args->bc_attrs.max_reqs = 1; | |
4999 | ||
5000 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5001 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5002 | __func__, | |
5003 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5004 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5005 | args->bc_attrs.max_reqs); | |
5006 | } | |
5007 | ||
43c2e885 | 5008 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5009 | { |
43c2e885 BF |
5010 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5011 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5012 | ||
5013 | if (rcvd->headerpadsz > sent->headerpadsz) | |
5014 | return -EINVAL; | |
5015 | if (rcvd->max_resp_sz > sent->max_resp_sz) | |
5016 | return -EINVAL; | |
5017 | /* | |
5018 | * Our requested max_ops is the minimum we need; we're not | |
5019 | * prepared to break up compounds into smaller pieces than that. | |
5020 | * So, no point even trying to continue if the server won't | |
5021 | * cooperate: | |
5022 | */ | |
5023 | if (rcvd->max_ops < sent->max_ops) | |
5024 | return -EINVAL; | |
5025 | if (rcvd->max_reqs == 0) | |
5026 | return -EINVAL; | |
5027 | return 0; | |
8d35301d AA |
5028 | } |
5029 | ||
43c2e885 BF |
5030 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5031 | { | |
5032 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5033 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5034 | |
43c2e885 BF |
5035 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5036 | return -EINVAL; | |
5037 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5038 | return -EINVAL; | |
5039 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5040 | return -EINVAL; | |
5041 | /* These would render the backchannel useless: */ | |
5042 | if (rcvd->max_ops == 0) | |
5043 | return -EINVAL; | |
5044 | if (rcvd->max_reqs == 0) | |
5045 | return -EINVAL; | |
5046 | return 0; | |
5047 | } | |
8d35301d | 5048 | |
8d35301d AA |
5049 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5050 | struct nfs4_session *session) | |
5051 | { | |
43c2e885 | 5052 | int ret; |
8d35301d | 5053 | |
43c2e885 BF |
5054 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5055 | if (ret) | |
5056 | return ret; | |
5057 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5058 | } |
5059 | ||
fc931582 AA |
5060 | static int _nfs4_proc_create_session(struct nfs_client *clp) |
5061 | { | |
5062 | struct nfs4_session *session = clp->cl_session; | |
5063 | struct nfs41_create_session_args args = { | |
5064 | .client = clp, | |
5065 | .cb_program = NFS4_CALLBACK, | |
5066 | }; | |
5067 | struct nfs41_create_session_res res = { | |
5068 | .client = clp, | |
5069 | }; | |
5070 | struct rpc_message msg = { | |
5071 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5072 | .rpc_argp = &args, | |
5073 | .rpc_resp = &res, | |
5074 | }; | |
5075 | int status; | |
5076 | ||
5077 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5078 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 AA |
5079 | |
5080 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, 0); | |
5081 | ||
8d35301d AA |
5082 | if (!status) |
5083 | /* Verify the session's negotiated channel_attrs values */ | |
5084 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5085 | if (!status) { |
5086 | /* Increment the clientid slot sequence id */ | |
5087 | clp->cl_seqid++; | |
5088 | } | |
5089 | ||
5090 | return status; | |
5091 | } | |
5092 | ||
5093 | /* | |
5094 | * Issues a CREATE_SESSION operation to the server. | |
5095 | * It is the responsibility of the caller to verify the session is | |
5096 | * expired before calling this routine. | |
5097 | */ | |
f26468fb | 5098 | int nfs4_proc_create_session(struct nfs_client *clp) |
fc931582 AA |
5099 | { |
5100 | int status; | |
5101 | unsigned *ptr; | |
fc931582 | 5102 | struct nfs4_session *session = clp->cl_session; |
7d6d63d6 RL |
5103 | long timeout = 0; |
5104 | int err; | |
fc931582 AA |
5105 | |
5106 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5107 | ||
7d6d63d6 RL |
5108 | do { |
5109 | status = _nfs4_proc_create_session(clp); | |
5110 | if (status == -NFS4ERR_DELAY) { | |
5111 | err = nfs4_delay(clp->cl_rpcclient, &timeout); | |
5112 | if (err) | |
5113 | status = err; | |
5114 | } | |
5115 | } while (status == -NFS4ERR_DELAY); | |
5116 | ||
fc931582 AA |
5117 | if (status) |
5118 | goto out; | |
5119 | ||
f26468fb TM |
5120 | /* Init and reset the fore channel */ |
5121 | status = nfs4_init_slot_tables(session); | |
5122 | dprintk("slot table initialization returned %d\n", status); | |
5123 | if (status) | |
5124 | goto out; | |
5125 | status = nfs4_reset_slot_tables(session); | |
5126 | dprintk("slot table reset returned %d\n", status); | |
fc931582 AA |
5127 | if (status) |
5128 | goto out; | |
5129 | ||
5130 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5131 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5132 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5133 | out: |
5134 | dprintk("<-- %s\n", __func__); | |
5135 | return status; | |
5136 | } | |
5137 | ||
0f3e66c6 AA |
5138 | /* |
5139 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5140 | * The caller must serialize access to this routine. | |
5141 | */ | |
5142 | int nfs4_proc_destroy_session(struct nfs4_session *session) | |
5143 | { | |
5144 | int status = 0; | |
5145 | struct rpc_message msg; | |
5146 | ||
5147 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5148 | ||
5149 | /* session is still being setup */ | |
5150 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5151 | return status; | |
5152 | ||
5153 | msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION]; | |
5154 | msg.rpc_argp = session; | |
5155 | msg.rpc_resp = NULL; | |
5156 | msg.rpc_cred = NULL; | |
5157 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, 0); | |
5158 | ||
5159 | if (status) | |
5160 | printk(KERN_WARNING | |
5161 | "Got error %d from the server on DESTROY_SESSION. " | |
5162 | "Session has been destroyed regardless...\n", status); | |
5163 | ||
5164 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5165 | return status; | |
5166 | } | |
5167 | ||
fccba804 TM |
5168 | int nfs4_init_session(struct nfs_server *server) |
5169 | { | |
5170 | struct nfs_client *clp = server->nfs_client; | |
2449ea2e | 5171 | struct nfs4_session *session; |
68bf05ef | 5172 | unsigned int rsize, wsize; |
fccba804 TM |
5173 | int ret; |
5174 | ||
5175 | if (!nfs4_has_session(clp)) | |
5176 | return 0; | |
5177 | ||
1055d76d TM |
5178 | session = clp->cl_session; |
5179 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5180 | return 0; | |
5181 | ||
68bf05ef AA |
5182 | rsize = server->rsize; |
5183 | if (rsize == 0) | |
5184 | rsize = NFS_MAX_FILE_IO_SIZE; | |
5185 | wsize = server->wsize; | |
5186 | if (wsize == 0) | |
5187 | wsize = NFS_MAX_FILE_IO_SIZE; | |
5188 | ||
68bf05ef AA |
5189 | session->fc_attrs.max_rqst_sz = wsize + nfs41_maxwrite_overhead; |
5190 | session->fc_attrs.max_resp_sz = rsize + nfs41_maxread_overhead; | |
2449ea2e | 5191 | |
fccba804 TM |
5192 | ret = nfs4_recover_expired_lease(server); |
5193 | if (!ret) | |
5194 | ret = nfs4_check_client_ready(clp); | |
5195 | return ret; | |
5196 | } | |
5197 | ||
d83217c1 AA |
5198 | int nfs4_init_ds_session(struct nfs_client *clp) |
5199 | { | |
5200 | struct nfs4_session *session = clp->cl_session; | |
5201 | int ret; | |
5202 | ||
5203 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5204 | return 0; | |
5205 | ||
5206 | ret = nfs4_client_recover_expired_lease(clp); | |
5207 | if (!ret) | |
5208 | /* Test for the DS role */ | |
5209 | if (!is_ds_client(clp)) | |
5210 | ret = -ENODEV; | |
5211 | if (!ret) | |
5212 | ret = nfs4_check_client_ready(clp); | |
5213 | return ret; | |
5214 | ||
5215 | } | |
5216 | EXPORT_SYMBOL_GPL(nfs4_init_ds_session); | |
5217 | ||
5218 | ||
fc01cea9 AA |
5219 | /* |
5220 | * Renew the cl_session lease. | |
5221 | */ | |
d5f8d3fe TM |
5222 | struct nfs4_sequence_data { |
5223 | struct nfs_client *clp; | |
5224 | struct nfs4_sequence_args args; | |
5225 | struct nfs4_sequence_res res; | |
5226 | }; | |
5227 | ||
dc96aef9 AB |
5228 | static void nfs41_sequence_release(void *data) |
5229 | { | |
d5f8d3fe TM |
5230 | struct nfs4_sequence_data *calldata = data; |
5231 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5232 | |
7135840f AB |
5233 | if (atomic_read(&clp->cl_count) > 1) |
5234 | nfs4_schedule_state_renewal(clp); | |
5235 | nfs_put_client(clp); | |
d5f8d3fe | 5236 | kfree(calldata); |
dc96aef9 AB |
5237 | } |
5238 | ||
aa5190d0 TM |
5239 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5240 | { | |
5241 | switch(task->tk_status) { | |
5242 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5243 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5244 | return -EAGAIN; | |
5245 | default: | |
0400a6b0 | 5246 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5247 | } |
5248 | return 0; | |
5249 | } | |
5250 | ||
dc96aef9 | 5251 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 5252 | { |
d5f8d3fe TM |
5253 | struct nfs4_sequence_data *calldata = data; |
5254 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 5255 | |
14516c3a TM |
5256 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
5257 | return; | |
fc01cea9 AA |
5258 | |
5259 | if (task->tk_status < 0) { | |
5260 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
5261 | if (atomic_read(&clp->cl_count) == 1) |
5262 | goto out; | |
fc01cea9 | 5263 | |
aa5190d0 TM |
5264 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
5265 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
5266 | return; |
5267 | } | |
5268 | } | |
fc01cea9 | 5269 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 5270 | out: |
fc01cea9 AA |
5271 | dprintk("<-- %s\n", __func__); |
5272 | } | |
5273 | ||
5274 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
5275 | { | |
d5f8d3fe TM |
5276 | struct nfs4_sequence_data *calldata = data; |
5277 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
5278 | struct nfs4_sequence_args *args; |
5279 | struct nfs4_sequence_res *res; | |
5280 | ||
fc01cea9 AA |
5281 | args = task->tk_msg.rpc_argp; |
5282 | res = task->tk_msg.rpc_resp; | |
5283 | ||
035168ab | 5284 | if (nfs41_setup_sequence(clp->cl_session, args, res, 0, task)) |
fc01cea9 AA |
5285 | return; |
5286 | rpc_call_start(task); | |
5287 | } | |
5288 | ||
5289 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
5290 | .rpc_call_done = nfs41_sequence_call_done, | |
5291 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 5292 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
5293 | }; |
5294 | ||
71ac6da9 | 5295 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) |
fc01cea9 | 5296 | { |
d5f8d3fe | 5297 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
5298 | struct rpc_message msg = { |
5299 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
5300 | .rpc_cred = cred, | |
5301 | }; | |
71ac6da9 TM |
5302 | struct rpc_task_setup task_setup_data = { |
5303 | .rpc_client = clp->cl_rpcclient, | |
5304 | .rpc_message = &msg, | |
5305 | .callback_ops = &nfs41_sequence_ops, | |
5306 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, | |
5307 | }; | |
fc01cea9 | 5308 | |
7135840f | 5309 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 5310 | return ERR_PTR(-EIO); |
dfb4f309 | 5311 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 5312 | if (calldata == NULL) { |
7135840f | 5313 | nfs_put_client(clp); |
71ac6da9 | 5314 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 5315 | } |
d5f8d3fe TM |
5316 | msg.rpc_argp = &calldata->args; |
5317 | msg.rpc_resp = &calldata->res; | |
5318 | calldata->clp = clp; | |
71ac6da9 | 5319 | task_setup_data.callback_data = calldata; |
fc01cea9 | 5320 | |
71ac6da9 TM |
5321 | return rpc_run_task(&task_setup_data); |
5322 | } | |
5323 | ||
5324 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5325 | { | |
5326 | struct rpc_task *task; | |
5327 | int ret = 0; | |
5328 | ||
5329 | task = _nfs41_proc_sequence(clp, cred); | |
5330 | if (IS_ERR(task)) | |
5331 | ret = PTR_ERR(task); | |
5332 | else | |
bf294b41 | 5333 | rpc_put_task_async(task); |
71ac6da9 TM |
5334 | dprintk("<-- %s status=%d\n", __func__, ret); |
5335 | return ret; | |
5336 | } | |
5337 | ||
5338 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5339 | { | |
5340 | struct rpc_task *task; | |
5341 | int ret; | |
5342 | ||
5343 | task = _nfs41_proc_sequence(clp, cred); | |
5344 | if (IS_ERR(task)) { | |
5345 | ret = PTR_ERR(task); | |
5346 | goto out; | |
5347 | } | |
5348 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
5349 | if (!ret) { |
5350 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
5351 | ||
5352 | if (task->tk_status == 0) | |
5353 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 5354 | ret = task->tk_status; |
b4410c2f | 5355 | } |
71ac6da9 TM |
5356 | rpc_put_task(task); |
5357 | out: | |
5358 | dprintk("<-- %s status=%d\n", __func__, ret); | |
5359 | return ret; | |
fc01cea9 AA |
5360 | } |
5361 | ||
fce5c838 RL |
5362 | struct nfs4_reclaim_complete_data { |
5363 | struct nfs_client *clp; | |
5364 | struct nfs41_reclaim_complete_args arg; | |
5365 | struct nfs41_reclaim_complete_res res; | |
5366 | }; | |
5367 | ||
5368 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
5369 | { | |
5370 | struct nfs4_reclaim_complete_data *calldata = data; | |
5371 | ||
b257957e | 5372 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
035168ab TM |
5373 | if (nfs41_setup_sequence(calldata->clp->cl_session, |
5374 | &calldata->arg.seq_args, | |
fce5c838 RL |
5375 | &calldata->res.seq_res, 0, task)) |
5376 | return; | |
5377 | ||
5378 | rpc_call_start(task); | |
5379 | } | |
5380 | ||
aa5190d0 TM |
5381 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5382 | { | |
5383 | switch(task->tk_status) { | |
5384 | case 0: | |
5385 | case -NFS4ERR_COMPLETE_ALREADY: | |
5386 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
5387 | break; | |
5388 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5389 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5390 | return -EAGAIN; | |
5391 | default: | |
0400a6b0 | 5392 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5393 | } |
5394 | return 0; | |
5395 | } | |
5396 | ||
fce5c838 RL |
5397 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
5398 | { | |
5399 | struct nfs4_reclaim_complete_data *calldata = data; | |
5400 | struct nfs_client *clp = calldata->clp; | |
5401 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
5402 | ||
5403 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5404 | if (!nfs41_sequence_done(task, res)) |
5405 | return; | |
fce5c838 | 5406 | |
aa5190d0 TM |
5407 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
5408 | rpc_restart_call_prepare(task); | |
5409 | return; | |
5410 | } | |
fce5c838 RL |
5411 | dprintk("<-- %s\n", __func__); |
5412 | } | |
5413 | ||
5414 | static void nfs4_free_reclaim_complete_data(void *data) | |
5415 | { | |
5416 | struct nfs4_reclaim_complete_data *calldata = data; | |
5417 | ||
5418 | kfree(calldata); | |
5419 | } | |
5420 | ||
5421 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
5422 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
5423 | .rpc_call_done = nfs4_reclaim_complete_done, | |
5424 | .rpc_release = nfs4_free_reclaim_complete_data, | |
5425 | }; | |
5426 | ||
5427 | /* | |
5428 | * Issue a global reclaim complete. | |
5429 | */ | |
5430 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
5431 | { | |
5432 | struct nfs4_reclaim_complete_data *calldata; | |
5433 | struct rpc_task *task; | |
5434 | struct rpc_message msg = { | |
5435 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
5436 | }; | |
5437 | struct rpc_task_setup task_setup_data = { | |
5438 | .rpc_client = clp->cl_rpcclient, | |
5439 | .rpc_message = &msg, | |
5440 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
5441 | .flags = RPC_TASK_ASYNC, | |
5442 | }; | |
5443 | int status = -ENOMEM; | |
5444 | ||
5445 | dprintk("--> %s\n", __func__); | |
8535b2be | 5446 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
5447 | if (calldata == NULL) |
5448 | goto out; | |
5449 | calldata->clp = clp; | |
5450 | calldata->arg.one_fs = 0; | |
fce5c838 RL |
5451 | |
5452 | msg.rpc_argp = &calldata->arg; | |
5453 | msg.rpc_resp = &calldata->res; | |
5454 | task_setup_data.callback_data = calldata; | |
5455 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 5456 | if (IS_ERR(task)) { |
fce5c838 | 5457 | status = PTR_ERR(task); |
acf82b85 DC |
5458 | goto out; |
5459 | } | |
c34c32ea AA |
5460 | status = nfs4_wait_for_completion_rpc_task(task); |
5461 | if (status == 0) | |
5462 | status = task->tk_status; | |
fce5c838 | 5463 | rpc_put_task(task); |
acf82b85 | 5464 | return 0; |
fce5c838 RL |
5465 | out: |
5466 | dprintk("<-- %s status=%d\n", __func__, status); | |
5467 | return status; | |
5468 | } | |
b1f69b75 AA |
5469 | |
5470 | static void | |
5471 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
5472 | { | |
5473 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 5474 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
b1f69b75 AA |
5475 | |
5476 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
5477 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
5478 | * right now covering the LAYOUTGET we are about to send. | |
5479 | * However, that is not so catastrophic, and there seems | |
5480 | * to be no way to prevent it completely. | |
5481 | */ | |
b1f69b75 AA |
5482 | if (nfs4_setup_sequence(server, &lgp->args.seq_args, |
5483 | &lgp->res.seq_res, 0, task)) | |
5484 | return; | |
cf7d63f1 FI |
5485 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
5486 | NFS_I(lgp->args.inode)->layout, | |
5487 | lgp->args.ctx->state)) { | |
5488 | rpc_exit(task, NFS4_OK); | |
5489 | return; | |
5490 | } | |
b1f69b75 AA |
5491 | rpc_call_start(task); |
5492 | } | |
5493 | ||
5494 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
5495 | { | |
5496 | struct nfs4_layoutget *lgp = calldata; | |
5497 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5498 | ||
5499 | dprintk("--> %s\n", __func__); | |
5500 | ||
5501 | if (!nfs4_sequence_done(task, &lgp->res.seq_res)) | |
5502 | return; | |
5503 | ||
5504 | switch (task->tk_status) { | |
5505 | case 0: | |
5506 | break; | |
5507 | case -NFS4ERR_LAYOUTTRYLATER: | |
5508 | case -NFS4ERR_RECALLCONFLICT: | |
5509 | task->tk_status = -NFS4ERR_DELAY; | |
5510 | /* Fall through */ | |
5511 | default: | |
5512 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
5513 | rpc_restart_call_prepare(task); | |
5514 | return; | |
5515 | } | |
5516 | } | |
b1f69b75 AA |
5517 | dprintk("<-- %s\n", __func__); |
5518 | } | |
5519 | ||
5520 | static void nfs4_layoutget_release(void *calldata) | |
5521 | { | |
5522 | struct nfs4_layoutget *lgp = calldata; | |
5523 | ||
5524 | dprintk("--> %s\n", __func__); | |
b1f69b75 AA |
5525 | if (lgp->res.layout.buf != NULL) |
5526 | free_page((unsigned long) lgp->res.layout.buf); | |
5527 | put_nfs_open_context(lgp->args.ctx); | |
5528 | kfree(calldata); | |
5529 | dprintk("<-- %s\n", __func__); | |
5530 | } | |
5531 | ||
5532 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
5533 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
5534 | .rpc_call_done = nfs4_layoutget_done, | |
5535 | .rpc_release = nfs4_layoutget_release, | |
5536 | }; | |
5537 | ||
5538 | int nfs4_proc_layoutget(struct nfs4_layoutget *lgp) | |
5539 | { | |
5540 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5541 | struct rpc_task *task; | |
5542 | struct rpc_message msg = { | |
5543 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
5544 | .rpc_argp = &lgp->args, | |
5545 | .rpc_resp = &lgp->res, | |
5546 | }; | |
5547 | struct rpc_task_setup task_setup_data = { | |
5548 | .rpc_client = server->client, | |
5549 | .rpc_message = &msg, | |
5550 | .callback_ops = &nfs4_layoutget_call_ops, | |
5551 | .callback_data = lgp, | |
5552 | .flags = RPC_TASK_ASYNC, | |
5553 | }; | |
5554 | int status = 0; | |
5555 | ||
5556 | dprintk("--> %s\n", __func__); | |
5557 | ||
5558 | lgp->res.layout.buf = (void *)__get_free_page(GFP_NOFS); | |
5559 | if (lgp->res.layout.buf == NULL) { | |
5560 | nfs4_layoutget_release(lgp); | |
5561 | return -ENOMEM; | |
5562 | } | |
5563 | ||
5564 | lgp->res.seq_res.sr_slot = NULL; | |
5565 | task = rpc_run_task(&task_setup_data); | |
5566 | if (IS_ERR(task)) | |
5567 | return PTR_ERR(task); | |
5568 | status = nfs4_wait_for_completion_rpc_task(task); | |
c31663d4 FI |
5569 | if (status == 0) |
5570 | status = task->tk_status; | |
5571 | if (status == 0) | |
5572 | status = pnfs_layout_process(lgp); | |
b1f69b75 AA |
5573 | rpc_put_task(task); |
5574 | dprintk("<-- %s status=%d\n", __func__, status); | |
5575 | return status; | |
5576 | } | |
5577 | ||
5578 | static int | |
5579 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
5580 | { | |
5581 | struct nfs4_getdeviceinfo_args args = { | |
5582 | .pdev = pdev, | |
5583 | }; | |
5584 | struct nfs4_getdeviceinfo_res res = { | |
5585 | .pdev = pdev, | |
5586 | }; | |
5587 | struct rpc_message msg = { | |
5588 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
5589 | .rpc_argp = &args, | |
5590 | .rpc_resp = &res, | |
5591 | }; | |
5592 | int status; | |
5593 | ||
5594 | dprintk("--> %s\n", __func__); | |
5595 | status = nfs4_call_sync(server, &msg, &args, &res, 0); | |
5596 | dprintk("<-- %s status=%d\n", __func__, status); | |
5597 | ||
5598 | return status; | |
5599 | } | |
5600 | ||
5601 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
5602 | { | |
5603 | struct nfs4_exception exception = { }; | |
5604 | int err; | |
5605 | ||
5606 | do { | |
5607 | err = nfs4_handle_exception(server, | |
5608 | _nfs4_proc_getdeviceinfo(server, pdev), | |
5609 | &exception); | |
5610 | } while (exception.retry); | |
5611 | return err; | |
5612 | } | |
5613 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
5614 | ||
557134a3 AA |
5615 | #endif /* CONFIG_NFS_V4_1 */ |
5616 | ||
591d71cb | 5617 | struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 5618 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 5619 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
5620 | .recover_open = nfs4_open_reclaim, |
5621 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 5622 | .establish_clid = nfs4_init_clientid, |
90a16617 | 5623 | .get_clid_cred = nfs4_get_setclientid_cred, |
1da177e4 LT |
5624 | }; |
5625 | ||
591d71cb AA |
5626 | #if defined(CONFIG_NFS_V4_1) |
5627 | struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { | |
5628 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, | |
5629 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
5630 | .recover_open = nfs4_open_reclaim, | |
5631 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 5632 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 5633 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 5634 | .reclaim_complete = nfs41_proc_reclaim_complete, |
591d71cb AA |
5635 | }; |
5636 | #endif /* CONFIG_NFS_V4_1 */ | |
5637 | ||
5638 | struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { | |
5639 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, | |
5640 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
5641 | .recover_open = nfs4_open_expired, | |
5642 | .recover_lock = nfs4_lock_expired, | |
5643 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 5644 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
5645 | }; |
5646 | ||
5647 | #if defined(CONFIG_NFS_V4_1) | |
5648 | struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { | |
7eff03ae | 5649 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 5650 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
1da177e4 LT |
5651 | .recover_open = nfs4_open_expired, |
5652 | .recover_lock = nfs4_lock_expired, | |
4d643d1d | 5653 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 5654 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 5655 | }; |
591d71cb | 5656 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 5657 | |
29fba38b BH |
5658 | struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
5659 | .sched_state_renewal = nfs4_proc_async_renew, | |
a7b72103 | 5660 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 5661 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
5662 | }; |
5663 | ||
5664 | #if defined(CONFIG_NFS_V4_1) | |
5665 | struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { | |
5666 | .sched_state_renewal = nfs41_proc_async_sequence, | |
a7b72103 | 5667 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 5668 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
5669 | }; |
5670 | #endif | |
5671 | ||
97dc1359 TM |
5672 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
5673 | .minor_version = 0, | |
5674 | .call_sync = _nfs4_call_sync, | |
e047a10c | 5675 | .validate_stateid = nfs4_validate_delegation_stateid, |
c48f4f35 TM |
5676 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
5677 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
5678 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
5679 | }; |
5680 | ||
5681 | #if defined(CONFIG_NFS_V4_1) | |
5682 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
5683 | .minor_version = 1, | |
5684 | .call_sync = _nfs4_call_sync_session, | |
e047a10c | 5685 | .validate_stateid = nfs41_validate_delegation_stateid, |
c48f4f35 TM |
5686 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
5687 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
5688 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
5689 | }; |
5690 | #endif | |
5691 | ||
97dc1359 TM |
5692 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
5693 | [0] = &nfs_v4_0_minor_ops, | |
5694 | #if defined(CONFIG_NFS_V4_1) | |
5695 | [1] = &nfs_v4_1_minor_ops, | |
5696 | #endif | |
5697 | }; | |
5698 | ||
92e1d5be | 5699 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
5700 | .permission = nfs_permission, |
5701 | .getattr = nfs_getattr, | |
5702 | .setattr = nfs_setattr, | |
64c2ce8b AK |
5703 | .getxattr = generic_getxattr, |
5704 | .setxattr = generic_setxattr, | |
5705 | .listxattr = generic_listxattr, | |
5706 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
5707 | }; |
5708 | ||
509de811 | 5709 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
5710 | .version = 4, /* protocol version */ |
5711 | .dentry_ops = &nfs4_dentry_operations, | |
5712 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 5713 | .file_inode_ops = &nfs4_file_inode_operations, |
1da177e4 LT |
5714 | .getroot = nfs4_proc_get_root, |
5715 | .getattr = nfs4_proc_getattr, | |
5716 | .setattr = nfs4_proc_setattr, | |
2b3de441 | 5717 | .lookupfh = nfs4_proc_lookupfh, |
1da177e4 LT |
5718 | .lookup = nfs4_proc_lookup, |
5719 | .access = nfs4_proc_access, | |
5720 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
5721 | .create = nfs4_proc_create, |
5722 | .remove = nfs4_proc_remove, | |
5723 | .unlink_setup = nfs4_proc_unlink_setup, | |
5724 | .unlink_done = nfs4_proc_unlink_done, | |
5725 | .rename = nfs4_proc_rename, | |
d3d4152a JL |
5726 | .rename_setup = nfs4_proc_rename_setup, |
5727 | .rename_done = nfs4_proc_rename_done, | |
1da177e4 LT |
5728 | .link = nfs4_proc_link, |
5729 | .symlink = nfs4_proc_symlink, | |
5730 | .mkdir = nfs4_proc_mkdir, | |
5731 | .rmdir = nfs4_proc_remove, | |
5732 | .readdir = nfs4_proc_readdir, | |
5733 | .mknod = nfs4_proc_mknod, | |
5734 | .statfs = nfs4_proc_statfs, | |
5735 | .fsinfo = nfs4_proc_fsinfo, | |
5736 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 5737 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
5738 | .decode_dirent = nfs4_decode_dirent, |
5739 | .read_setup = nfs4_proc_read_setup, | |
ec06c096 | 5740 | .read_done = nfs4_read_done, |
1da177e4 | 5741 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 5742 | .write_done = nfs4_write_done, |
1da177e4 | 5743 | .commit_setup = nfs4_proc_commit_setup, |
788e7a89 | 5744 | .commit_done = nfs4_commit_done, |
1da177e4 | 5745 | .lock = nfs4_proc_lock, |
e50a1c2e | 5746 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 5747 | .close_context = nfs4_close_context, |
2b484297 | 5748 | .open_context = nfs4_atomic_open, |
45a52a02 | 5749 | .init_client = nfs4_init_client, |
1da177e4 LT |
5750 | }; |
5751 | ||
64c2ce8b AK |
5752 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
5753 | .prefix = XATTR_NAME_NFSV4_ACL, | |
5754 | .list = nfs4_xattr_list_nfs4_acl, | |
5755 | .get = nfs4_xattr_get_nfs4_acl, | |
5756 | .set = nfs4_xattr_set_nfs4_acl, | |
5757 | }; | |
5758 | ||
5759 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
5760 | &nfs4_xattr_nfs4_acl_handler, | |
5761 | NULL | |
5762 | }; | |
5763 | ||
1da177e4 LT |
5764 | /* |
5765 | * Local variables: | |
5766 | * c-basic-offset: 8 | |
5767 | * End: | |
5768 | */ |