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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4proc.c | |
3 | * | |
4 | * Client-side procedure declarations for NFSv4. | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | */ | |
37 | ||
38 | #include <linux/mm.h> | |
1da177e4 LT |
39 | #include <linux/delay.h> |
40 | #include <linux/errno.h> | |
41 | #include <linux/string.h> | |
5a0e3ad6 | 42 | #include <linux/slab.h> |
1da177e4 | 43 | #include <linux/sunrpc/clnt.h> |
8f70e95f | 44 | #include <linux/sunrpc/gss_api.h> |
1da177e4 LT |
45 | #include <linux/nfs.h> |
46 | #include <linux/nfs4.h> | |
47 | #include <linux/nfs_fs.h> | |
48 | #include <linux/nfs_page.h> | |
9b7160c5 | 49 | #include <linux/nfs_mount.h> |
1da177e4 | 50 | #include <linux/namei.h> |
02a913a7 | 51 | #include <linux/mount.h> |
99fe60d0 | 52 | #include <linux/module.h> |
5a0ffe54 | 53 | #include <linux/sunrpc/bc_xprt.h> |
64c2ce8b | 54 | #include <linux/xattr.h> |
c7a360b0 | 55 | #include <linux/utsname.h> |
1da177e4 | 56 | |
4ce79717 | 57 | #include "nfs4_fs.h" |
1da177e4 | 58 | #include "delegation.h" |
101070ca | 59 | #include "internal.h" |
006ea73e | 60 | #include "iostat.h" |
fc931582 | 61 | #include "callback.h" |
b1f69b75 | 62 | #include "pnfs.h" |
1da177e4 LT |
63 | |
64 | #define NFSDBG_FACILITY NFSDBG_PROC | |
65 | ||
2066fe89 | 66 | #define NFS4_POLL_RETRY_MIN (HZ/10) |
1da177e4 LT |
67 | #define NFS4_POLL_RETRY_MAX (15*HZ) |
68 | ||
a78cb57a TM |
69 | #define NFS4_MAX_LOOP_ON_RECOVER (10) |
70 | ||
cdd4e68b | 71 | struct nfs4_opendata; |
864472e9 | 72 | static int _nfs4_proc_open(struct nfs4_opendata *data); |
b257957e | 73 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data); |
1da177e4 | 74 | static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); |
9e33bed5 | 75 | static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); |
7c513058 BS |
76 | static int _nfs4_proc_lookup(struct rpc_clnt *client, struct inode *dir, |
77 | const struct qstr *name, struct nfs_fh *fhandle, | |
78 | struct nfs_fattr *fattr); | |
9936781d | 79 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr); |
0ab64e0e TM |
80 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
81 | struct nfs_fattr *fattr, struct iattr *sattr, | |
82 | struct nfs4_state *state); | |
1da177e4 | 83 | |
1da177e4 | 84 | /* Prevent leaks of NFSv4 errors into userland */ |
46f72f57 | 85 | static int nfs4_map_errors(int err) |
1da177e4 | 86 | { |
52567b03 TM |
87 | if (err >= -1000) |
88 | return err; | |
89 | switch (err) { | |
90 | case -NFS4ERR_RESOURCE: | |
91 | return -EREMOTEIO; | |
7ebb9315 BS |
92 | case -NFS4ERR_WRONGSEC: |
93 | return -EPERM; | |
3ddeb7c5 TM |
94 | case -NFS4ERR_BADOWNER: |
95 | case -NFS4ERR_BADNAME: | |
96 | return -EINVAL; | |
52567b03 | 97 | default: |
1da177e4 | 98 | dprintk("%s could not handle NFSv4 error %d\n", |
3110ff80 | 99 | __func__, -err); |
52567b03 | 100 | break; |
1da177e4 | 101 | } |
52567b03 | 102 | return -EIO; |
1da177e4 LT |
103 | } |
104 | ||
105 | /* | |
106 | * This is our standard bitmap for GETATTR requests. | |
107 | */ | |
108 | const u32 nfs4_fattr_bitmap[2] = { | |
109 | FATTR4_WORD0_TYPE | |
110 | | FATTR4_WORD0_CHANGE | |
111 | | FATTR4_WORD0_SIZE | |
112 | | FATTR4_WORD0_FSID | |
113 | | FATTR4_WORD0_FILEID, | |
114 | FATTR4_WORD1_MODE | |
115 | | FATTR4_WORD1_NUMLINKS | |
116 | | FATTR4_WORD1_OWNER | |
117 | | FATTR4_WORD1_OWNER_GROUP | |
118 | | FATTR4_WORD1_RAWDEV | |
119 | | FATTR4_WORD1_SPACE_USED | |
120 | | FATTR4_WORD1_TIME_ACCESS | |
121 | | FATTR4_WORD1_TIME_METADATA | |
122 | | FATTR4_WORD1_TIME_MODIFY | |
123 | }; | |
124 | ||
125 | const u32 nfs4_statfs_bitmap[2] = { | |
126 | FATTR4_WORD0_FILES_AVAIL | |
127 | | FATTR4_WORD0_FILES_FREE | |
128 | | FATTR4_WORD0_FILES_TOTAL, | |
129 | FATTR4_WORD1_SPACE_AVAIL | |
130 | | FATTR4_WORD1_SPACE_FREE | |
131 | | FATTR4_WORD1_SPACE_TOTAL | |
132 | }; | |
133 | ||
4ce79717 | 134 | const u32 nfs4_pathconf_bitmap[2] = { |
1da177e4 LT |
135 | FATTR4_WORD0_MAXLINK |
136 | | FATTR4_WORD0_MAXNAME, | |
137 | 0 | |
138 | }; | |
139 | ||
140 | const u32 nfs4_fsinfo_bitmap[2] = { FATTR4_WORD0_MAXFILESIZE | |
141 | | FATTR4_WORD0_MAXREAD | |
142 | | FATTR4_WORD0_MAXWRITE | |
143 | | FATTR4_WORD0_LEASE_TIME, | |
55b6e774 | 144 | FATTR4_WORD1_TIME_DELTA |
504913fb | 145 | | FATTR4_WORD1_FS_LAYOUT_TYPES |
1da177e4 LT |
146 | }; |
147 | ||
830b8e33 MN |
148 | const u32 nfs4_fs_locations_bitmap[2] = { |
149 | FATTR4_WORD0_TYPE | |
150 | | FATTR4_WORD0_CHANGE | |
151 | | FATTR4_WORD0_SIZE | |
152 | | FATTR4_WORD0_FSID | |
153 | | FATTR4_WORD0_FILEID | |
154 | | FATTR4_WORD0_FS_LOCATIONS, | |
155 | FATTR4_WORD1_MODE | |
156 | | FATTR4_WORD1_NUMLINKS | |
157 | | FATTR4_WORD1_OWNER | |
158 | | FATTR4_WORD1_OWNER_GROUP | |
159 | | FATTR4_WORD1_RAWDEV | |
160 | | FATTR4_WORD1_SPACE_USED | |
161 | | FATTR4_WORD1_TIME_ACCESS | |
162 | | FATTR4_WORD1_TIME_METADATA | |
163 | | FATTR4_WORD1_TIME_MODIFY | |
164 | | FATTR4_WORD1_MOUNTED_ON_FILEID | |
165 | }; | |
166 | ||
bc4785cd | 167 | static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry, |
1da177e4 LT |
168 | struct nfs4_readdir_arg *readdir) |
169 | { | |
0dbb4c67 | 170 | __be32 *start, *p; |
1da177e4 LT |
171 | |
172 | BUG_ON(readdir->count < 80); | |
173 | if (cookie > 2) { | |
b7ef1956 | 174 | readdir->cookie = cookie; |
1da177e4 LT |
175 | memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier)); |
176 | return; | |
177 | } | |
178 | ||
179 | readdir->cookie = 0; | |
180 | memset(&readdir->verifier, 0, sizeof(readdir->verifier)); | |
181 | if (cookie == 2) | |
182 | return; | |
183 | ||
184 | /* | |
185 | * NFSv4 servers do not return entries for '.' and '..' | |
186 | * Therefore, we fake these entries here. We let '.' | |
187 | * have cookie 0 and '..' have cookie 1. Note that | |
188 | * when talking to the server, we always send cookie 0 | |
189 | * instead of 1 or 2. | |
190 | */ | |
0dbb4c67 | 191 | start = p = kmap_atomic(*readdir->pages, KM_USER0); |
1da177e4 LT |
192 | |
193 | if (cookie == 0) { | |
194 | *p++ = xdr_one; /* next */ | |
195 | *p++ = xdr_zero; /* cookie, first word */ | |
196 | *p++ = xdr_one; /* cookie, second word */ | |
197 | *p++ = xdr_one; /* entry len */ | |
198 | memcpy(p, ".\0\0\0", 4); /* entry */ | |
199 | p++; | |
200 | *p++ = xdr_one; /* bitmap length */ | |
201 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
202 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 203 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode)); |
1da177e4 LT |
204 | } |
205 | ||
206 | *p++ = xdr_one; /* next */ | |
207 | *p++ = xdr_zero; /* cookie, first word */ | |
208 | *p++ = xdr_two; /* cookie, second word */ | |
209 | *p++ = xdr_two; /* entry len */ | |
210 | memcpy(p, "..\0\0", 4); /* entry */ | |
211 | p++; | |
212 | *p++ = xdr_one; /* bitmap length */ | |
213 | *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */ | |
214 | *p++ = htonl(8); /* attribute buffer length */ | |
4e769b93 | 215 | p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode)); |
1da177e4 LT |
216 | |
217 | readdir->pgbase = (char *)p - (char *)start; | |
218 | readdir->count -= readdir->pgbase; | |
219 | kunmap_atomic(start, KM_USER0); | |
220 | } | |
221 | ||
65de872e TM |
222 | static int nfs4_wait_clnt_recover(struct nfs_client *clp) |
223 | { | |
224 | int res; | |
225 | ||
226 | might_sleep(); | |
227 | ||
e005e804 | 228 | res = wait_on_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING, |
72cb77f4 | 229 | nfs_wait_bit_killable, TASK_KILLABLE); |
65de872e TM |
230 | return res; |
231 | } | |
232 | ||
233 | static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) | |
234 | { | |
235 | int res = 0; | |
236 | ||
237 | might_sleep(); | |
238 | ||
239 | if (*timeout <= 0) | |
240 | *timeout = NFS4_POLL_RETRY_MIN; | |
241 | if (*timeout > NFS4_POLL_RETRY_MAX) | |
242 | *timeout = NFS4_POLL_RETRY_MAX; | |
243 | schedule_timeout_killable(*timeout); | |
244 | if (fatal_signal_pending(current)) | |
245 | res = -ERESTARTSYS; | |
246 | *timeout <<= 1; | |
247 | return res; | |
248 | } | |
249 | ||
250 | /* This is the error handling routine for processes that are allowed | |
251 | * to sleep. | |
252 | */ | |
b064eca2 | 253 | static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception) |
65de872e TM |
254 | { |
255 | struct nfs_client *clp = server->nfs_client; | |
9e33bed5 | 256 | struct nfs4_state *state = exception->state; |
65de872e TM |
257 | int ret = errorcode; |
258 | ||
259 | exception->retry = 0; | |
260 | switch(errorcode) { | |
261 | case 0: | |
262 | return 0; | |
9e33bed5 TM |
263 | case -NFS4ERR_ADMIN_REVOKED: |
264 | case -NFS4ERR_BAD_STATEID: | |
265 | case -NFS4ERR_OPENMODE: | |
266 | if (state == NULL) | |
267 | break; | |
0400a6b0 TM |
268 | nfs4_schedule_stateid_recovery(server, state); |
269 | goto wait_on_recovery; | |
0ced63d1 TM |
270 | case -NFS4ERR_EXPIRED: |
271 | if (state != NULL) | |
272 | nfs4_schedule_stateid_recovery(server, state); | |
65de872e | 273 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 274 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
275 | nfs4_schedule_lease_recovery(clp); |
276 | goto wait_on_recovery; | |
03391693 | 277 | #if defined(CONFIG_NFS_V4_1) |
4745e315 AA |
278 | case -NFS4ERR_BADSESSION: |
279 | case -NFS4ERR_BADSLOT: | |
280 | case -NFS4ERR_BAD_HIGH_SLOT: | |
281 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
282 | case -NFS4ERR_DEADSESSION: | |
283 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
284 | case -NFS4ERR_SEQ_MISORDERED: | |
285 | dprintk("%s ERROR: %d Reset session\n", __func__, | |
286 | errorcode); | |
0400a6b0 | 287 | nfs4_schedule_session_recovery(clp->cl_session); |
4745e315 | 288 | exception->retry = 1; |
b9179237 | 289 | break; |
03391693 | 290 | #endif /* defined(CONFIG_NFS_V4_1) */ |
65de872e | 291 | case -NFS4ERR_FILE_OPEN: |
44ed3556 N |
292 | if (exception->timeout > HZ) { |
293 | /* We have retried a decent amount, time to | |
294 | * fail | |
295 | */ | |
296 | ret = -EBUSY; | |
297 | break; | |
298 | } | |
65de872e TM |
299 | case -NFS4ERR_GRACE: |
300 | case -NFS4ERR_DELAY: | |
2c643488 | 301 | case -EKEYEXPIRED: |
65de872e TM |
302 | ret = nfs4_delay(server->client, &exception->timeout); |
303 | if (ret != 0) | |
304 | break; | |
a8a4ae3a | 305 | case -NFS4ERR_RETRY_UNCACHED_REP: |
65de872e TM |
306 | case -NFS4ERR_OLD_STATEID: |
307 | exception->retry = 1; | |
b064eca2 TM |
308 | break; |
309 | case -NFS4ERR_BADOWNER: | |
310 | /* The following works around a Linux server bug! */ | |
311 | case -NFS4ERR_BADNAME: | |
312 | if (server->caps & NFS_CAP_UIDGID_NOMAP) { | |
313 | server->caps &= ~NFS_CAP_UIDGID_NOMAP; | |
314 | exception->retry = 1; | |
315 | printk(KERN_WARNING "NFS: v4 server %s " | |
316 | "does not accept raw " | |
317 | "uid/gids. " | |
318 | "Reenabling the idmapper.\n", | |
319 | server->nfs_client->cl_hostname); | |
320 | } | |
65de872e TM |
321 | } |
322 | /* We failed to handle the error */ | |
323 | return nfs4_map_errors(ret); | |
0400a6b0 | 324 | wait_on_recovery: |
a2c0b9e2 TM |
325 | ret = nfs4_wait_clnt_recover(clp); |
326 | if (ret == 0) | |
327 | exception->retry = 1; | |
328 | return ret; | |
65de872e TM |
329 | } |
330 | ||
331 | ||
452e9352 | 332 | static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) |
1da177e4 | 333 | { |
1da177e4 LT |
334 | spin_lock(&clp->cl_lock); |
335 | if (time_before(clp->cl_last_renewal,timestamp)) | |
336 | clp->cl_last_renewal = timestamp; | |
337 | spin_unlock(&clp->cl_lock); | |
338 | } | |
339 | ||
452e9352 TM |
340 | static void renew_lease(const struct nfs_server *server, unsigned long timestamp) |
341 | { | |
342 | do_renew_lease(server->nfs_client, timestamp); | |
343 | } | |
344 | ||
cccef3b9 AA |
345 | #if defined(CONFIG_NFS_V4_1) |
346 | ||
e2c4ab3c AA |
347 | /* |
348 | * nfs4_free_slot - free a slot and efficiently update slot table. | |
349 | * | |
350 | * freeing a slot is trivially done by clearing its respective bit | |
351 | * in the bitmap. | |
352 | * If the freed slotid equals highest_used_slotid we want to update it | |
353 | * so that the server would be able to size down the slot table if needed, | |
354 | * otherwise we know that the highest_used_slotid is still in use. | |
355 | * When updating highest_used_slotid there may be "holes" in the bitmap | |
356 | * so we need to scan down from highest_used_slotid to 0 looking for the now | |
357 | * highest slotid in use. | |
358 | * If none found, highest_used_slotid is set to -1. | |
35dc1d74 TM |
359 | * |
360 | * Must be called while holding tbl->slot_tbl_lock | |
e2c4ab3c AA |
361 | */ |
362 | static void | |
dfb4f309 | 363 | nfs4_free_slot(struct nfs4_slot_table *tbl, struct nfs4_slot *free_slot) |
e2c4ab3c | 364 | { |
dfb4f309 | 365 | int free_slotid = free_slot - tbl->slots; |
e2c4ab3c AA |
366 | int slotid = free_slotid; |
367 | ||
dfb4f309 | 368 | BUG_ON(slotid < 0 || slotid >= NFS4_MAX_SLOT_TABLE); |
e2c4ab3c AA |
369 | /* clear used bit in bitmap */ |
370 | __clear_bit(slotid, tbl->used_slots); | |
371 | ||
372 | /* update highest_used_slotid when it is freed */ | |
373 | if (slotid == tbl->highest_used_slotid) { | |
374 | slotid = find_last_bit(tbl->used_slots, tbl->max_slots); | |
bcb56164 | 375 | if (slotid < tbl->max_slots) |
e2c4ab3c AA |
376 | tbl->highest_used_slotid = slotid; |
377 | else | |
378 | tbl->highest_used_slotid = -1; | |
379 | } | |
e2c4ab3c AA |
380 | dprintk("%s: free_slotid %u highest_used_slotid %d\n", __func__, |
381 | free_slotid, tbl->highest_used_slotid); | |
382 | } | |
383 | ||
3bfb0fc5 | 384 | /* |
42acd021 | 385 | * Signal state manager thread if session fore channel is drained |
3bfb0fc5 | 386 | */ |
42acd021 | 387 | static void nfs4_check_drain_fc_complete(struct nfs4_session *ses) |
3bfb0fc5 | 388 | { |
689cf5c1 AB |
389 | struct rpc_task *task; |
390 | ||
a2118c33 | 391 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state)) { |
689cf5c1 AB |
392 | task = rpc_wake_up_next(&ses->fc_slot_table.slot_tbl_waitq); |
393 | if (task) | |
394 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
3bfb0fc5 AB |
395 | return; |
396 | } | |
397 | ||
398 | if (ses->fc_slot_table.highest_used_slotid != -1) | |
399 | return; | |
400 | ||
42acd021 AA |
401 | dprintk("%s COMPLETE: Session Fore Channel Drained\n", __func__); |
402 | complete(&ses->fc_slot_table.complete); | |
403 | } | |
404 | ||
405 | /* | |
406 | * Signal state manager thread if session back channel is drained | |
407 | */ | |
408 | void nfs4_check_drain_bc_complete(struct nfs4_session *ses) | |
409 | { | |
410 | if (!test_bit(NFS4_SESSION_DRAINING, &ses->session_state) || | |
411 | ses->bc_slot_table.highest_used_slotid != -1) | |
412 | return; | |
413 | dprintk("%s COMPLETE: Session Back Channel Drained\n", __func__); | |
414 | complete(&ses->bc_slot_table.complete); | |
3bfb0fc5 AB |
415 | } |
416 | ||
d185a334 | 417 | static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res) |
13615871 AA |
418 | { |
419 | struct nfs4_slot_table *tbl; | |
420 | ||
d185a334 | 421 | tbl = &res->sr_session->fc_slot_table; |
dfb4f309 | 422 | if (!res->sr_slot) { |
13615871 AA |
423 | /* just wake up the next guy waiting since |
424 | * we may have not consumed a slot after all */ | |
691daf3b | 425 | dprintk("%s: No slot\n", __func__); |
35dc1d74 | 426 | return; |
13615871 | 427 | } |
ea028ac9 | 428 | |
35dc1d74 | 429 | spin_lock(&tbl->slot_tbl_lock); |
dfb4f309 | 430 | nfs4_free_slot(tbl, res->sr_slot); |
42acd021 | 431 | nfs4_check_drain_fc_complete(res->sr_session); |
35dc1d74 | 432 | spin_unlock(&tbl->slot_tbl_lock); |
dfb4f309 | 433 | res->sr_slot = NULL; |
13615871 AA |
434 | } |
435 | ||
14516c3a | 436 | static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) |
b0df806c AA |
437 | { |
438 | unsigned long timestamp; | |
14516c3a | 439 | struct nfs_client *clp; |
b0df806c AA |
440 | |
441 | /* | |
442 | * sr_status remains 1 if an RPC level error occurred. The server | |
443 | * may or may not have processed the sequence operation.. | |
444 | * Proceed as if the server received and processed the sequence | |
445 | * operation. | |
446 | */ | |
447 | if (res->sr_status == 1) | |
448 | res->sr_status = NFS_OK; | |
449 | ||
468f8613 BS |
450 | /* don't increment the sequence number if the task wasn't sent */ |
451 | if (!RPC_WAS_SENT(task)) | |
b0df806c AA |
452 | goto out; |
453 | ||
691daf3b | 454 | /* Check the SEQUENCE operation status */ |
14516c3a TM |
455 | switch (res->sr_status) { |
456 | case 0: | |
b0df806c | 457 | /* Update the slot's sequence and clientid lease timer */ |
dfb4f309 | 458 | ++res->sr_slot->seq_nr; |
b0df806c | 459 | timestamp = res->sr_renewal_time; |
14516c3a | 460 | clp = res->sr_session->clp; |
452e9352 | 461 | do_renew_lease(clp, timestamp); |
0629e370 | 462 | /* Check sequence flags */ |
b4410c2f TM |
463 | if (res->sr_status_flags != 0) |
464 | nfs4_schedule_lease_recovery(clp); | |
14516c3a TM |
465 | break; |
466 | case -NFS4ERR_DELAY: | |
467 | /* The server detected a resend of the RPC call and | |
468 | * returned NFS4ERR_DELAY as per Section 2.10.6.2 | |
469 | * of RFC5661. | |
470 | */ | |
12364a4f | 471 | dprintk("%s: slot=%td seq=%d: Operation in progress\n", |
dfb4f309 BH |
472 | __func__, |
473 | res->sr_slot - res->sr_session->fc_slot_table.slots, | |
474 | res->sr_slot->seq_nr); | |
14516c3a TM |
475 | goto out_retry; |
476 | default: | |
477 | /* Just update the slot sequence no. */ | |
dfb4f309 | 478 | ++res->sr_slot->seq_nr; |
b0df806c AA |
479 | } |
480 | out: | |
481 | /* The session may be reset by one of the error handlers. */ | |
482 | dprintk("%s: Error %d free the slot \n", __func__, res->sr_status); | |
d185a334 | 483 | nfs41_sequence_free_slot(res); |
14516c3a TM |
484 | return 1; |
485 | out_retry: | |
d05dd4e9 | 486 | if (!rpc_restart_call(task)) |
14516c3a TM |
487 | goto out; |
488 | rpc_delay(task, NFS4_POLL_RETRY_MAX); | |
489 | return 0; | |
b0df806c AA |
490 | } |
491 | ||
14516c3a TM |
492 | static int nfs4_sequence_done(struct rpc_task *task, |
493 | struct nfs4_sequence_res *res) | |
df896455 | 494 | { |
14516c3a TM |
495 | if (res->sr_session == NULL) |
496 | return 1; | |
497 | return nfs41_sequence_done(task, res); | |
df896455 TM |
498 | } |
499 | ||
510b8175 BH |
500 | /* |
501 | * nfs4_find_slot - efficiently look for a free slot | |
502 | * | |
503 | * nfs4_find_slot looks for an unset bit in the used_slots bitmap. | |
504 | * If found, we mark the slot as used, update the highest_used_slotid, | |
505 | * and respectively set up the sequence operation args. | |
506 | * The slot number is returned if found, or NFS4_MAX_SLOT_TABLE otherwise. | |
fbcd4abc AA |
507 | * |
508 | * Note: must be called with under the slot_tbl_lock. | |
510b8175 BH |
509 | */ |
510 | static u8 | |
40ead580 | 511 | nfs4_find_slot(struct nfs4_slot_table *tbl) |
510b8175 BH |
512 | { |
513 | int slotid; | |
514 | u8 ret_id = NFS4_MAX_SLOT_TABLE; | |
515 | BUILD_BUG_ON((u8)NFS4_MAX_SLOT_TABLE != (int)NFS4_MAX_SLOT_TABLE); | |
516 | ||
510b8175 BH |
517 | dprintk("--> %s used_slots=%04lx highest_used=%d max_slots=%d\n", |
518 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, | |
519 | tbl->max_slots); | |
520 | slotid = find_first_zero_bit(tbl->used_slots, tbl->max_slots); | |
521 | if (slotid >= tbl->max_slots) | |
522 | goto out; | |
523 | __set_bit(slotid, tbl->used_slots); | |
524 | if (slotid > tbl->highest_used_slotid) | |
525 | tbl->highest_used_slotid = slotid; | |
526 | ret_id = slotid; | |
527 | out: | |
528 | dprintk("<-- %s used_slots=%04lx highest_used=%d slotid=%d \n", | |
529 | __func__, tbl->used_slots[0], tbl->highest_used_slotid, ret_id); | |
510b8175 BH |
530 | return ret_id; |
531 | } | |
532 | ||
dc70d7b3 | 533 | int nfs41_setup_sequence(struct nfs4_session *session, |
ce5039c1 AA |
534 | struct nfs4_sequence_args *args, |
535 | struct nfs4_sequence_res *res, | |
536 | int cache_reply, | |
537 | struct rpc_task *task) | |
538 | { | |
fbcd4abc AA |
539 | struct nfs4_slot *slot; |
540 | struct nfs4_slot_table *tbl; | |
541 | u8 slotid; | |
542 | ||
543 | dprintk("--> %s\n", __func__); | |
ce5039c1 | 544 | /* slot already allocated? */ |
dfb4f309 | 545 | if (res->sr_slot != NULL) |
ce5039c1 AA |
546 | return 0; |
547 | ||
fbcd4abc AA |
548 | tbl = &session->fc_slot_table; |
549 | ||
550 | spin_lock(&tbl->slot_tbl_lock); | |
a2118c33 | 551 | if (test_bit(NFS4_SESSION_DRAINING, &session->session_state) && |
5601a00d | 552 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { |
ea028ac9 AA |
553 | /* |
554 | * The state manager will wait until the slot table is empty. | |
555 | * Schedule the reset thread | |
556 | */ | |
05f0d236 | 557 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); |
b069d94a | 558 | spin_unlock(&tbl->slot_tbl_lock); |
bcb56164 | 559 | dprintk("%s Schedule Session Reset\n", __func__); |
05f0d236 | 560 | return -EAGAIN; |
b069d94a AA |
561 | } |
562 | ||
689cf5c1 AB |
563 | if (!rpc_queue_empty(&tbl->slot_tbl_waitq) && |
564 | !rpc_task_has_priority(task, RPC_PRIORITY_PRIVILEGED)) { | |
565 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
566 | spin_unlock(&tbl->slot_tbl_lock); | |
567 | dprintk("%s enforce FIFO order\n", __func__); | |
568 | return -EAGAIN; | |
569 | } | |
570 | ||
40ead580 | 571 | slotid = nfs4_find_slot(tbl); |
fbcd4abc AA |
572 | if (slotid == NFS4_MAX_SLOT_TABLE) { |
573 | rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); | |
574 | spin_unlock(&tbl->slot_tbl_lock); | |
575 | dprintk("<-- %s: no free slots\n", __func__); | |
576 | return -EAGAIN; | |
577 | } | |
578 | spin_unlock(&tbl->slot_tbl_lock); | |
579 | ||
689cf5c1 | 580 | rpc_task_set_priority(task, RPC_PRIORITY_NORMAL); |
fbcd4abc | 581 | slot = tbl->slots + slotid; |
99fe60d0 | 582 | args->sa_session = session; |
fbcd4abc AA |
583 | args->sa_slotid = slotid; |
584 | args->sa_cache_this = cache_reply; | |
585 | ||
586 | dprintk("<-- %s slotid=%d seqid=%d\n", __func__, slotid, slot->seq_nr); | |
587 | ||
99fe60d0 | 588 | res->sr_session = session; |
dfb4f309 | 589 | res->sr_slot = slot; |
fbcd4abc | 590 | res->sr_renewal_time = jiffies; |
2a6e26cd | 591 | res->sr_status_flags = 0; |
fbcd4abc AA |
592 | /* |
593 | * sr_status is only set in decode_sequence, and so will remain | |
594 | * set to 1 if an rpc level failure occurs. | |
595 | */ | |
596 | res->sr_status = 1; | |
ce5039c1 AA |
597 | return 0; |
598 | } | |
dc70d7b3 | 599 | EXPORT_SYMBOL_GPL(nfs41_setup_sequence); |
ce5039c1 | 600 | |
035168ab | 601 | int nfs4_setup_sequence(const struct nfs_server *server, |
ce5039c1 AA |
602 | struct nfs4_sequence_args *args, |
603 | struct nfs4_sequence_res *res, | |
604 | int cache_reply, | |
605 | struct rpc_task *task) | |
606 | { | |
035168ab | 607 | struct nfs4_session *session = nfs4_get_session(server); |
ce5039c1 AA |
608 | int ret = 0; |
609 | ||
035168ab TM |
610 | if (session == NULL) { |
611 | args->sa_session = NULL; | |
612 | res->sr_session = NULL; | |
613 | goto out; | |
614 | } | |
615 | ||
12364a4f | 616 | dprintk("--> %s clp %p session %p sr_slot %td\n", |
dfb4f309 BH |
617 | __func__, session->clp, session, res->sr_slot ? |
618 | res->sr_slot - session->fc_slot_table.slots : -1); | |
ce5039c1 | 619 | |
035168ab | 620 | ret = nfs41_setup_sequence(session, args, res, cache_reply, |
ce5039c1 | 621 | task); |
ce5039c1 AA |
622 | out: |
623 | dprintk("<-- %s status=%d\n", __func__, ret); | |
624 | return ret; | |
625 | } | |
626 | ||
627 | struct nfs41_call_sync_data { | |
035168ab | 628 | const struct nfs_server *seq_server; |
ce5039c1 AA |
629 | struct nfs4_sequence_args *seq_args; |
630 | struct nfs4_sequence_res *seq_res; | |
631 | int cache_reply; | |
632 | }; | |
633 | ||
634 | static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) | |
635 | { | |
636 | struct nfs41_call_sync_data *data = calldata; | |
637 | ||
035168ab TM |
638 | dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); |
639 | ||
640 | if (nfs4_setup_sequence(data->seq_server, data->seq_args, | |
ce5039c1 AA |
641 | data->seq_res, data->cache_reply, task)) |
642 | return; | |
643 | rpc_call_start(task); | |
644 | } | |
645 | ||
b257957e AB |
646 | static void nfs41_call_priv_sync_prepare(struct rpc_task *task, void *calldata) |
647 | { | |
648 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
649 | nfs41_call_sync_prepare(task, calldata); | |
650 | } | |
651 | ||
69ab40c4 AA |
652 | static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) |
653 | { | |
654 | struct nfs41_call_sync_data *data = calldata; | |
655 | ||
14516c3a | 656 | nfs41_sequence_done(task, data->seq_res); |
69ab40c4 AA |
657 | } |
658 | ||
ce5039c1 AA |
659 | struct rpc_call_ops nfs41_call_sync_ops = { |
660 | .rpc_call_prepare = nfs41_call_sync_prepare, | |
69ab40c4 | 661 | .rpc_call_done = nfs41_call_sync_done, |
ce5039c1 AA |
662 | }; |
663 | ||
b257957e AB |
664 | struct rpc_call_ops nfs41_call_priv_sync_ops = { |
665 | .rpc_call_prepare = nfs41_call_priv_sync_prepare, | |
666 | .rpc_call_done = nfs41_call_sync_done, | |
667 | }; | |
668 | ||
7c513058 BS |
669 | static int nfs4_call_sync_sequence(struct rpc_clnt *clnt, |
670 | struct nfs_server *server, | |
ce5039c1 AA |
671 | struct rpc_message *msg, |
672 | struct nfs4_sequence_args *args, | |
673 | struct nfs4_sequence_res *res, | |
b257957e AB |
674 | int cache_reply, |
675 | int privileged) | |
ce5039c1 AA |
676 | { |
677 | int ret; | |
678 | struct rpc_task *task; | |
679 | struct nfs41_call_sync_data data = { | |
035168ab | 680 | .seq_server = server, |
ce5039c1 AA |
681 | .seq_args = args, |
682 | .seq_res = res, | |
683 | .cache_reply = cache_reply, | |
684 | }; | |
685 | struct rpc_task_setup task_setup = { | |
7c513058 | 686 | .rpc_client = clnt, |
ce5039c1 AA |
687 | .rpc_message = msg, |
688 | .callback_ops = &nfs41_call_sync_ops, | |
689 | .callback_data = &data | |
690 | }; | |
691 | ||
dfb4f309 | 692 | res->sr_slot = NULL; |
b257957e AB |
693 | if (privileged) |
694 | task_setup.callback_ops = &nfs41_call_priv_sync_ops; | |
ce5039c1 AA |
695 | task = rpc_run_task(&task_setup); |
696 | if (IS_ERR(task)) | |
697 | ret = PTR_ERR(task); | |
698 | else { | |
699 | ret = task->tk_status; | |
700 | rpc_put_task(task); | |
701 | } | |
702 | return ret; | |
703 | } | |
704 | ||
7c513058 BS |
705 | int _nfs4_call_sync_session(struct rpc_clnt *clnt, |
706 | struct nfs_server *server, | |
cccef3b9 AA |
707 | struct rpc_message *msg, |
708 | struct nfs4_sequence_args *args, | |
709 | struct nfs4_sequence_res *res, | |
710 | int cache_reply) | |
711 | { | |
7c513058 | 712 | return nfs4_call_sync_sequence(clnt, server, msg, args, res, cache_reply, 0); |
cccef3b9 AA |
713 | } |
714 | ||
df896455 | 715 | #else |
14516c3a TM |
716 | static int nfs4_sequence_done(struct rpc_task *task, |
717 | struct nfs4_sequence_res *res) | |
df896455 | 718 | { |
14516c3a | 719 | return 1; |
df896455 | 720 | } |
cccef3b9 AA |
721 | #endif /* CONFIG_NFS_V4_1 */ |
722 | ||
7c513058 BS |
723 | int _nfs4_call_sync(struct rpc_clnt *clnt, |
724 | struct nfs_server *server, | |
cccef3b9 AA |
725 | struct rpc_message *msg, |
726 | struct nfs4_sequence_args *args, | |
727 | struct nfs4_sequence_res *res, | |
728 | int cache_reply) | |
729 | { | |
f3752975 | 730 | args->sa_session = res->sr_session = NULL; |
7c513058 | 731 | return rpc_call_sync(clnt, msg, 0); |
cccef3b9 AA |
732 | } |
733 | ||
e73b83f2 | 734 | static inline |
7c513058 BS |
735 | int nfs4_call_sync(struct rpc_clnt *clnt, |
736 | struct nfs_server *server, | |
e73b83f2 BS |
737 | struct rpc_message *msg, |
738 | struct nfs4_sequence_args *args, | |
739 | struct nfs4_sequence_res *res, | |
740 | int cache_reply) | |
741 | { | |
7c513058 BS |
742 | return server->nfs_client->cl_mvops->call_sync(clnt, server, msg, |
743 | args, res, cache_reply); | |
e73b83f2 | 744 | } |
cccef3b9 | 745 | |
38478b24 | 746 | static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo) |
1da177e4 | 747 | { |
38478b24 | 748 | struct nfs_inode *nfsi = NFS_I(dir); |
1da177e4 | 749 | |
38478b24 | 750 | spin_lock(&dir->i_lock); |
40d24704 TM |
751 | nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; |
752 | if (!cinfo->atomic || cinfo->before != nfsi->change_attr) | |
bfc69a45 | 753 | nfs_force_lookup_revalidate(dir); |
40d24704 | 754 | nfsi->change_attr = cinfo->after; |
38478b24 | 755 | spin_unlock(&dir->i_lock); |
1da177e4 LT |
756 | } |
757 | ||
e56e0b78 | 758 | struct nfs4_opendata { |
c6d00e63 | 759 | struct kref kref; |
e56e0b78 TM |
760 | struct nfs_openargs o_arg; |
761 | struct nfs_openres o_res; | |
cdd4e68b TM |
762 | struct nfs_open_confirmargs c_arg; |
763 | struct nfs_open_confirmres c_res; | |
e56e0b78 TM |
764 | struct nfs_fattr f_attr; |
765 | struct nfs_fattr dir_attr; | |
ad389da7 | 766 | struct path path; |
e56e0b78 TM |
767 | struct dentry *dir; |
768 | struct nfs4_state_owner *owner; | |
aac00a8d | 769 | struct nfs4_state *state; |
e56e0b78 | 770 | struct iattr attrs; |
26e976a8 | 771 | unsigned long timestamp; |
3e309914 | 772 | unsigned int rpc_done : 1; |
24ac23ab TM |
773 | int rpc_status; |
774 | int cancelled; | |
e56e0b78 TM |
775 | }; |
776 | ||
2ced46c2 TM |
777 | |
778 | static void nfs4_init_opendata_res(struct nfs4_opendata *p) | |
779 | { | |
780 | p->o_res.f_attr = &p->f_attr; | |
781 | p->o_res.dir_attr = &p->dir_attr; | |
c1d51931 TM |
782 | p->o_res.seqid = p->o_arg.seqid; |
783 | p->c_res.seqid = p->c_arg.seqid; | |
2ced46c2 TM |
784 | p->o_res.server = p->o_arg.server; |
785 | nfs_fattr_init(&p->f_attr); | |
786 | nfs_fattr_init(&p->dir_attr); | |
787 | } | |
788 | ||
ad389da7 | 789 | static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path, |
dc0b027d | 790 | struct nfs4_state_owner *sp, fmode_t fmode, int flags, |
8535b2be TM |
791 | const struct iattr *attrs, |
792 | gfp_t gfp_mask) | |
e56e0b78 | 793 | { |
ad389da7 | 794 | struct dentry *parent = dget_parent(path->dentry); |
e56e0b78 TM |
795 | struct inode *dir = parent->d_inode; |
796 | struct nfs_server *server = NFS_SERVER(dir); | |
797 | struct nfs4_opendata *p; | |
798 | ||
8535b2be | 799 | p = kzalloc(sizeof(*p), gfp_mask); |
e56e0b78 TM |
800 | if (p == NULL) |
801 | goto err; | |
8535b2be | 802 | p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask); |
e56e0b78 TM |
803 | if (p->o_arg.seqid == NULL) |
804 | goto err_free; | |
f6948697 AV |
805 | path_get(path); |
806 | p->path = *path; | |
e56e0b78 TM |
807 | p->dir = parent; |
808 | p->owner = sp; | |
809 | atomic_inc(&sp->so_count); | |
810 | p->o_arg.fh = NFS_FH(dir); | |
dc0b027d TM |
811 | p->o_arg.open_flags = flags; |
812 | p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); | |
7539bbab | 813 | p->o_arg.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 814 | p->o_arg.id = sp->so_owner_id.id; |
ad389da7 | 815 | p->o_arg.name = &p->path.dentry->d_name; |
e56e0b78 TM |
816 | p->o_arg.server = server; |
817 | p->o_arg.bitmask = server->attr_bitmask; | |
818 | p->o_arg.claim = NFS4_OPEN_CLAIM_NULL; | |
d77d76ff TM |
819 | if (flags & O_CREAT) { |
820 | u32 *s; | |
821 | ||
e56e0b78 TM |
822 | p->o_arg.u.attrs = &p->attrs; |
823 | memcpy(&p->attrs, attrs, sizeof(p->attrs)); | |
d77d76ff TM |
824 | s = (u32 *) p->o_arg.u.verifier.data; |
825 | s[0] = jiffies; | |
826 | s[1] = current->pid; | |
e56e0b78 | 827 | } |
cdd4e68b TM |
828 | p->c_arg.fh = &p->o_res.fh; |
829 | p->c_arg.stateid = &p->o_res.stateid; | |
830 | p->c_arg.seqid = p->o_arg.seqid; | |
2ced46c2 | 831 | nfs4_init_opendata_res(p); |
c6d00e63 | 832 | kref_init(&p->kref); |
e56e0b78 TM |
833 | return p; |
834 | err_free: | |
835 | kfree(p); | |
836 | err: | |
837 | dput(parent); | |
838 | return NULL; | |
839 | } | |
840 | ||
c6d00e63 | 841 | static void nfs4_opendata_free(struct kref *kref) |
e56e0b78 | 842 | { |
c6d00e63 TM |
843 | struct nfs4_opendata *p = container_of(kref, |
844 | struct nfs4_opendata, kref); | |
845 | ||
846 | nfs_free_seqid(p->o_arg.seqid); | |
aac00a8d TM |
847 | if (p->state != NULL) |
848 | nfs4_put_open_state(p->state); | |
c6d00e63 TM |
849 | nfs4_put_state_owner(p->owner); |
850 | dput(p->dir); | |
31f31db1 | 851 | path_put(&p->path); |
c6d00e63 TM |
852 | kfree(p); |
853 | } | |
854 | ||
855 | static void nfs4_opendata_put(struct nfs4_opendata *p) | |
856 | { | |
857 | if (p != NULL) | |
858 | kref_put(&p->kref, nfs4_opendata_free); | |
e56e0b78 TM |
859 | } |
860 | ||
06f814a3 TM |
861 | static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) |
862 | { | |
06f814a3 TM |
863 | int ret; |
864 | ||
06f814a3 | 865 | ret = rpc_wait_for_completion_task(task); |
06f814a3 TM |
866 | return ret; |
867 | } | |
868 | ||
dc0b027d | 869 | static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode) |
6ee41268 TM |
870 | { |
871 | int ret = 0; | |
dc0b027d TM |
872 | |
873 | if (open_mode & O_EXCL) | |
874 | goto out; | |
875 | switch (mode & (FMODE_READ|FMODE_WRITE)) { | |
6ee41268 | 876 | case FMODE_READ: |
88069f77 TM |
877 | ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0 |
878 | && state->n_rdonly != 0; | |
6ee41268 TM |
879 | break; |
880 | case FMODE_WRITE: | |
88069f77 TM |
881 | ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0 |
882 | && state->n_wronly != 0; | |
6ee41268 TM |
883 | break; |
884 | case FMODE_READ|FMODE_WRITE: | |
88069f77 TM |
885 | ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0 |
886 | && state->n_rdwr != 0; | |
6ee41268 | 887 | } |
dc0b027d | 888 | out: |
6ee41268 TM |
889 | return ret; |
890 | } | |
891 | ||
dc0b027d | 892 | static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode) |
aac00a8d | 893 | { |
dc0b027d | 894 | if ((delegation->type & fmode) != fmode) |
aac00a8d | 895 | return 0; |
15c831bf | 896 | if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags)) |
aac00a8d | 897 | return 0; |
b7391f44 | 898 | nfs_mark_delegation_referenced(delegation); |
aac00a8d TM |
899 | return 1; |
900 | } | |
901 | ||
dc0b027d | 902 | static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) |
e7616923 | 903 | { |
dc0b027d | 904 | switch (fmode) { |
e7616923 TM |
905 | case FMODE_WRITE: |
906 | state->n_wronly++; | |
907 | break; | |
908 | case FMODE_READ: | |
909 | state->n_rdonly++; | |
910 | break; | |
911 | case FMODE_READ|FMODE_WRITE: | |
912 | state->n_rdwr++; | |
913 | } | |
dc0b027d | 914 | nfs4_state_set_mode_locked(state, state->state | fmode); |
003707c7 TM |
915 | } |
916 | ||
dc0b027d | 917 | static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 TM |
918 | { |
919 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) | |
920 | memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data)); | |
921 | memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data)); | |
dc0b027d | 922 | switch (fmode) { |
003707c7 TM |
923 | case FMODE_READ: |
924 | set_bit(NFS_O_RDONLY_STATE, &state->flags); | |
925 | break; | |
926 | case FMODE_WRITE: | |
927 | set_bit(NFS_O_WRONLY_STATE, &state->flags); | |
928 | break; | |
929 | case FMODE_READ|FMODE_WRITE: | |
930 | set_bit(NFS_O_RDWR_STATE, &state->flags); | |
931 | } | |
e7616923 TM |
932 | } |
933 | ||
dc0b027d | 934 | static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) |
003707c7 | 935 | { |
8bda4e4c | 936 | write_seqlock(&state->seqlock); |
dc0b027d | 937 | nfs_set_open_stateid_locked(state, stateid, fmode); |
8bda4e4c | 938 | write_sequnlock(&state->seqlock); |
003707c7 TM |
939 | } |
940 | ||
dc0b027d | 941 | static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) |
1da177e4 | 942 | { |
8bda4e4c TM |
943 | /* |
944 | * Protect the call to nfs4_state_set_mode_locked and | |
945 | * serialise the stateid update | |
946 | */ | |
947 | write_seqlock(&state->seqlock); | |
003707c7 TM |
948 | if (deleg_stateid != NULL) { |
949 | memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data)); | |
950 | set_bit(NFS_DELEGATED_STATE, &state->flags); | |
951 | } | |
952 | if (open_stateid != NULL) | |
dc0b027d | 953 | nfs_set_open_stateid_locked(state, open_stateid, fmode); |
8bda4e4c TM |
954 | write_sequnlock(&state->seqlock); |
955 | spin_lock(&state->owner->so_lock); | |
dc0b027d | 956 | update_open_stateflags(state, fmode); |
ec073428 | 957 | spin_unlock(&state->owner->so_lock); |
1da177e4 LT |
958 | } |
959 | ||
dc0b027d | 960 | static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) |
34310430 TM |
961 | { |
962 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
963 | struct nfs_delegation *deleg_cur; | |
964 | int ret = 0; | |
965 | ||
dc0b027d | 966 | fmode &= (FMODE_READ|FMODE_WRITE); |
34310430 TM |
967 | |
968 | rcu_read_lock(); | |
969 | deleg_cur = rcu_dereference(nfsi->delegation); | |
970 | if (deleg_cur == NULL) | |
971 | goto no_delegation; | |
972 | ||
973 | spin_lock(&deleg_cur->lock); | |
974 | if (nfsi->delegation != deleg_cur || | |
dc0b027d | 975 | (deleg_cur->type & fmode) != fmode) |
34310430 TM |
976 | goto no_delegation_unlock; |
977 | ||
978 | if (delegation == NULL) | |
979 | delegation = &deleg_cur->stateid; | |
980 | else if (memcmp(deleg_cur->stateid.data, delegation->data, NFS4_STATEID_SIZE) != 0) | |
981 | goto no_delegation_unlock; | |
982 | ||
b7391f44 | 983 | nfs_mark_delegation_referenced(deleg_cur); |
dc0b027d | 984 | __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); |
34310430 TM |
985 | ret = 1; |
986 | no_delegation_unlock: | |
987 | spin_unlock(&deleg_cur->lock); | |
988 | no_delegation: | |
989 | rcu_read_unlock(); | |
990 | ||
991 | if (!ret && open_stateid != NULL) { | |
dc0b027d | 992 | __update_open_stateid(state, open_stateid, NULL, fmode); |
34310430 TM |
993 | ret = 1; |
994 | } | |
995 | ||
996 | return ret; | |
997 | } | |
998 | ||
999 | ||
dc0b027d | 1000 | static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode) |
aac00a8d TM |
1001 | { |
1002 | struct nfs_delegation *delegation; | |
1003 | ||
1004 | rcu_read_lock(); | |
1005 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
dc0b027d | 1006 | if (delegation == NULL || (delegation->type & fmode) == fmode) { |
aac00a8d TM |
1007 | rcu_read_unlock(); |
1008 | return; | |
1009 | } | |
1010 | rcu_read_unlock(); | |
1011 | nfs_inode_return_delegation(inode); | |
1012 | } | |
1013 | ||
6ee41268 | 1014 | static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) |
aac00a8d TM |
1015 | { |
1016 | struct nfs4_state *state = opendata->state; | |
1017 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1018 | struct nfs_delegation *delegation; | |
dc0b027d TM |
1019 | int open_mode = opendata->o_arg.open_flags & O_EXCL; |
1020 | fmode_t fmode = opendata->o_arg.fmode; | |
aac00a8d TM |
1021 | nfs4_stateid stateid; |
1022 | int ret = -EAGAIN; | |
1023 | ||
aac00a8d | 1024 | for (;;) { |
dc0b027d | 1025 | if (can_open_cached(state, fmode, open_mode)) { |
6ee41268 | 1026 | spin_lock(&state->owner->so_lock); |
dc0b027d TM |
1027 | if (can_open_cached(state, fmode, open_mode)) { |
1028 | update_open_stateflags(state, fmode); | |
6ee41268 | 1029 | spin_unlock(&state->owner->so_lock); |
6ee41268 TM |
1030 | goto out_return_state; |
1031 | } | |
1032 | spin_unlock(&state->owner->so_lock); | |
1033 | } | |
34310430 TM |
1034 | rcu_read_lock(); |
1035 | delegation = rcu_dereference(nfsi->delegation); | |
1036 | if (delegation == NULL || | |
dc0b027d | 1037 | !can_open_delegated(delegation, fmode)) { |
34310430 | 1038 | rcu_read_unlock(); |
aac00a8d | 1039 | break; |
34310430 | 1040 | } |
aac00a8d TM |
1041 | /* Save the delegation */ |
1042 | memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data)); | |
1043 | rcu_read_unlock(); | |
af22f94a | 1044 | ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); |
aac00a8d TM |
1045 | if (ret != 0) |
1046 | goto out; | |
1047 | ret = -EAGAIN; | |
34310430 TM |
1048 | |
1049 | /* Try to update the stateid using the delegation */ | |
dc0b027d | 1050 | if (update_open_stateid(state, NULL, &stateid, fmode)) |
34310430 | 1051 | goto out_return_state; |
aac00a8d | 1052 | } |
aac00a8d TM |
1053 | out: |
1054 | return ERR_PTR(ret); | |
1055 | out_return_state: | |
1056 | atomic_inc(&state->count); | |
1057 | return state; | |
1058 | } | |
1059 | ||
24ac23ab TM |
1060 | static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data) |
1061 | { | |
1062 | struct inode *inode; | |
1063 | struct nfs4_state *state = NULL; | |
003707c7 | 1064 | struct nfs_delegation *delegation; |
1b370bc2 | 1065 | int ret; |
24ac23ab | 1066 | |
aac00a8d | 1067 | if (!data->rpc_done) { |
6ee41268 | 1068 | state = nfs4_try_open_cached(data); |
aac00a8d TM |
1069 | goto out; |
1070 | } | |
1071 | ||
1b370bc2 | 1072 | ret = -EAGAIN; |
24ac23ab | 1073 | if (!(data->f_attr.valid & NFS_ATTR_FATTR)) |
1b370bc2 | 1074 | goto err; |
24ac23ab | 1075 | inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr); |
1b370bc2 | 1076 | ret = PTR_ERR(inode); |
03f28e3a | 1077 | if (IS_ERR(inode)) |
1b370bc2 TM |
1078 | goto err; |
1079 | ret = -ENOMEM; | |
24ac23ab TM |
1080 | state = nfs4_get_open_state(inode, data->owner); |
1081 | if (state == NULL) | |
1b370bc2 | 1082 | goto err_put_inode; |
549d6ed5 | 1083 | if (data->o_res.delegation_type != 0) { |
549d6ed5 TM |
1084 | int delegation_flags = 0; |
1085 | ||
003707c7 TM |
1086 | rcu_read_lock(); |
1087 | delegation = rcu_dereference(NFS_I(inode)->delegation); | |
1088 | if (delegation) | |
1089 | delegation_flags = delegation->flags; | |
1090 | rcu_read_unlock(); | |
15c831bf | 1091 | if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0) |
549d6ed5 TM |
1092 | nfs_inode_set_delegation(state->inode, |
1093 | data->owner->so_cred, | |
1094 | &data->o_res); | |
1095 | else | |
1096 | nfs_inode_reclaim_delegation(state->inode, | |
1097 | data->owner->so_cred, | |
1098 | &data->o_res); | |
1099 | } | |
34310430 TM |
1100 | |
1101 | update_open_stateid(state, &data->o_res.stateid, NULL, | |
dc0b027d | 1102 | data->o_arg.fmode); |
24ac23ab | 1103 | iput(inode); |
aac00a8d | 1104 | out: |
24ac23ab | 1105 | return state; |
1b370bc2 TM |
1106 | err_put_inode: |
1107 | iput(inode); | |
1108 | err: | |
1109 | return ERR_PTR(ret); | |
24ac23ab TM |
1110 | } |
1111 | ||
864472e9 TM |
1112 | static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state) |
1113 | { | |
1114 | struct nfs_inode *nfsi = NFS_I(state->inode); | |
1115 | struct nfs_open_context *ctx; | |
1116 | ||
1117 | spin_lock(&state->inode->i_lock); | |
1118 | list_for_each_entry(ctx, &nfsi->open_files, list) { | |
1119 | if (ctx->state != state) | |
1120 | continue; | |
1121 | get_nfs_open_context(ctx); | |
1122 | spin_unlock(&state->inode->i_lock); | |
1123 | return ctx; | |
1124 | } | |
1125 | spin_unlock(&state->inode->i_lock); | |
1126 | return ERR_PTR(-ENOENT); | |
1127 | } | |
1128 | ||
6f220ed5 TM |
1129 | static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state) |
1130 | { | |
1131 | struct nfs4_opendata *opendata; | |
1132 | ||
8535b2be | 1133 | opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, 0, NULL, GFP_NOFS); |
6f220ed5 TM |
1134 | if (opendata == NULL) |
1135 | return ERR_PTR(-ENOMEM); | |
1136 | opendata->state = state; | |
1137 | atomic_inc(&state->count); | |
1138 | return opendata; | |
1139 | } | |
1140 | ||
dc0b027d | 1141 | static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res) |
864472e9 | 1142 | { |
2ced46c2 | 1143 | struct nfs4_state *newstate; |
864472e9 TM |
1144 | int ret; |
1145 | ||
dc0b027d TM |
1146 | opendata->o_arg.open_flags = 0; |
1147 | opendata->o_arg.fmode = fmode; | |
2ced46c2 TM |
1148 | memset(&opendata->o_res, 0, sizeof(opendata->o_res)); |
1149 | memset(&opendata->c_res, 0, sizeof(opendata->c_res)); | |
1150 | nfs4_init_opendata_res(opendata); | |
b257957e | 1151 | ret = _nfs4_recover_proc_open(opendata); |
864472e9 TM |
1152 | if (ret != 0) |
1153 | return ret; | |
2ced46c2 | 1154 | newstate = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1155 | if (IS_ERR(newstate)) |
1156 | return PTR_ERR(newstate); | |
dc0b027d | 1157 | nfs4_close_state(&opendata->path, newstate, fmode); |
2ced46c2 | 1158 | *res = newstate; |
864472e9 TM |
1159 | return 0; |
1160 | } | |
1161 | ||
1162 | static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state) | |
1163 | { | |
864472e9 | 1164 | struct nfs4_state *newstate; |
864472e9 TM |
1165 | int ret; |
1166 | ||
1167 | /* memory barrier prior to reading state->n_* */ | |
2ced46c2 | 1168 | clear_bit(NFS_DELEGATED_STATE, &state->flags); |
864472e9 TM |
1169 | smp_rmb(); |
1170 | if (state->n_rdwr != 0) { | |
b0ed9dbc | 1171 | clear_bit(NFS_O_RDWR_STATE, &state->flags); |
2ced46c2 | 1172 | ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate); |
864472e9 TM |
1173 | if (ret != 0) |
1174 | return ret; | |
2ced46c2 TM |
1175 | if (newstate != state) |
1176 | return -ESTALE; | |
864472e9 TM |
1177 | } |
1178 | if (state->n_wronly != 0) { | |
b0ed9dbc | 1179 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); |
2ced46c2 | 1180 | ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate); |
864472e9 TM |
1181 | if (ret != 0) |
1182 | return ret; | |
2ced46c2 TM |
1183 | if (newstate != state) |
1184 | return -ESTALE; | |
864472e9 TM |
1185 | } |
1186 | if (state->n_rdonly != 0) { | |
b0ed9dbc | 1187 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); |
2ced46c2 | 1188 | ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate); |
864472e9 TM |
1189 | if (ret != 0) |
1190 | return ret; | |
2ced46c2 TM |
1191 | if (newstate != state) |
1192 | return -ESTALE; | |
864472e9 | 1193 | } |
1ac7e2fd TM |
1194 | /* |
1195 | * We may have performed cached opens for all three recoveries. | |
1196 | * Check if we need to update the current stateid. | |
1197 | */ | |
1198 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 && | |
1199 | memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) { | |
8bda4e4c | 1200 | write_seqlock(&state->seqlock); |
1ac7e2fd TM |
1201 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) |
1202 | memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)); | |
8bda4e4c | 1203 | write_sequnlock(&state->seqlock); |
1ac7e2fd | 1204 | } |
864472e9 TM |
1205 | return 0; |
1206 | } | |
1207 | ||
1da177e4 LT |
1208 | /* |
1209 | * OPEN_RECLAIM: | |
1210 | * reclaim state on the server after a reboot. | |
1da177e4 | 1211 | */ |
539cd03a | 1212 | static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1213 | { |
1ac7e2fd | 1214 | struct nfs_delegation *delegation; |
864472e9 | 1215 | struct nfs4_opendata *opendata; |
dc0b027d | 1216 | fmode_t delegation_type = 0; |
1da177e4 LT |
1217 | int status; |
1218 | ||
6f220ed5 TM |
1219 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1220 | if (IS_ERR(opendata)) | |
1221 | return PTR_ERR(opendata); | |
864472e9 TM |
1222 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS; |
1223 | opendata->o_arg.fh = NFS_FH(state->inode); | |
1ac7e2fd TM |
1224 | rcu_read_lock(); |
1225 | delegation = rcu_dereference(NFS_I(state->inode)->delegation); | |
15c831bf | 1226 | if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0) |
65bbf6bd | 1227 | delegation_type = delegation->type; |
1ac7e2fd | 1228 | rcu_read_unlock(); |
864472e9 TM |
1229 | opendata->o_arg.u.delegation_type = delegation_type; |
1230 | status = nfs4_open_recover(opendata, state); | |
c6d00e63 | 1231 | nfs4_opendata_put(opendata); |
1da177e4 LT |
1232 | return status; |
1233 | } | |
1234 | ||
539cd03a | 1235 | static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 LT |
1236 | { |
1237 | struct nfs_server *server = NFS_SERVER(state->inode); | |
1238 | struct nfs4_exception exception = { }; | |
1239 | int err; | |
1240 | do { | |
539cd03a | 1241 | err = _nfs4_do_open_reclaim(ctx, state); |
168667c4 | 1242 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
1243 | break; |
1244 | nfs4_handle_exception(server, err, &exception); | |
1da177e4 LT |
1245 | } while (exception.retry); |
1246 | return err; | |
1247 | } | |
1248 | ||
864472e9 TM |
1249 | static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1250 | { | |
1251 | struct nfs_open_context *ctx; | |
1252 | int ret; | |
1253 | ||
1254 | ctx = nfs4_state_find_open_context(state); | |
1255 | if (IS_ERR(ctx)) | |
1256 | return PTR_ERR(ctx); | |
539cd03a | 1257 | ret = nfs4_do_open_reclaim(ctx, state); |
864472e9 TM |
1258 | put_nfs_open_context(ctx); |
1259 | return ret; | |
1260 | } | |
1261 | ||
13437e12 | 1262 | static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 | 1263 | { |
e56e0b78 | 1264 | struct nfs4_opendata *opendata; |
864472e9 | 1265 | int ret; |
1da177e4 | 1266 | |
6f220ed5 TM |
1267 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1268 | if (IS_ERR(opendata)) | |
1269 | return PTR_ERR(opendata); | |
e56e0b78 | 1270 | opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR; |
13437e12 | 1271 | memcpy(opendata->o_arg.u.delegation.data, stateid->data, |
e56e0b78 | 1272 | sizeof(opendata->o_arg.u.delegation.data)); |
864472e9 | 1273 | ret = nfs4_open_recover(opendata, state); |
c6d00e63 | 1274 | nfs4_opendata_put(opendata); |
864472e9 | 1275 | return ret; |
1da177e4 LT |
1276 | } |
1277 | ||
13437e12 | 1278 | int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid) |
1da177e4 LT |
1279 | { |
1280 | struct nfs4_exception exception = { }; | |
539cd03a | 1281 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 LT |
1282 | int err; |
1283 | do { | |
13437e12 | 1284 | err = _nfs4_open_delegation_recall(ctx, state, stateid); |
1da177e4 LT |
1285 | switch (err) { |
1286 | case 0: | |
965b5d67 TM |
1287 | case -ENOENT: |
1288 | case -ESTALE: | |
1289 | goto out; | |
bcfa49f6 RL |
1290 | case -NFS4ERR_BADSESSION: |
1291 | case -NFS4ERR_BADSLOT: | |
1292 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1293 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1294 | case -NFS4ERR_DEADSESSION: | |
0400a6b0 | 1295 | nfs4_schedule_session_recovery(server->nfs_client->cl_session); |
bcfa49f6 | 1296 | goto out; |
1da177e4 LT |
1297 | case -NFS4ERR_STALE_CLIENTID: |
1298 | case -NFS4ERR_STALE_STATEID: | |
1299 | case -NFS4ERR_EXPIRED: | |
1300 | /* Don't recall a delegation if it was lost */ | |
0400a6b0 | 1301 | nfs4_schedule_lease_recovery(server->nfs_client); |
965b5d67 TM |
1302 | goto out; |
1303 | case -ERESTARTSYS: | |
1304 | /* | |
1305 | * The show must go on: exit, but mark the | |
1306 | * stateid as needing recovery. | |
1307 | */ | |
1308 | case -NFS4ERR_ADMIN_REVOKED: | |
1309 | case -NFS4ERR_BAD_STATEID: | |
0400a6b0 | 1310 | nfs4_schedule_stateid_recovery(server, state); |
168667c4 TM |
1311 | case -EKEYEXPIRED: |
1312 | /* | |
1313 | * User RPCSEC_GSS context has expired. | |
1314 | * We cannot recover this stateid now, so | |
1315 | * skip it and allow recovery thread to | |
1316 | * proceed. | |
1317 | */ | |
965b5d67 TM |
1318 | case -ENOMEM: |
1319 | err = 0; | |
1320 | goto out; | |
1da177e4 LT |
1321 | } |
1322 | err = nfs4_handle_exception(server, err, &exception); | |
1323 | } while (exception.retry); | |
965b5d67 | 1324 | out: |
1da177e4 LT |
1325 | return err; |
1326 | } | |
1327 | ||
cdd4e68b TM |
1328 | static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) |
1329 | { | |
1330 | struct nfs4_opendata *data = calldata; | |
1331 | ||
1332 | data->rpc_status = task->tk_status; | |
26e976a8 | 1333 | if (data->rpc_status == 0) { |
cdd4e68b TM |
1334 | memcpy(data->o_res.stateid.data, data->c_res.stateid.data, |
1335 | sizeof(data->o_res.stateid.data)); | |
bb22629e | 1336 | nfs_confirm_seqid(&data->owner->so_seqid, 0); |
26e976a8 | 1337 | renew_lease(data->o_res.server, data->timestamp); |
3e309914 | 1338 | data->rpc_done = 1; |
26e976a8 | 1339 | } |
cdd4e68b TM |
1340 | } |
1341 | ||
1342 | static void nfs4_open_confirm_release(void *calldata) | |
1343 | { | |
1344 | struct nfs4_opendata *data = calldata; | |
1345 | struct nfs4_state *state = NULL; | |
1346 | ||
1347 | /* If this request hasn't been cancelled, do nothing */ | |
1348 | if (data->cancelled == 0) | |
1349 | goto out_free; | |
1350 | /* In case of error, no cleanup! */ | |
3e309914 | 1351 | if (!data->rpc_done) |
cdd4e68b | 1352 | goto out_free; |
cdd4e68b | 1353 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1354 | if (!IS_ERR(state)) |
dc0b027d | 1355 | nfs4_close_state(&data->path, state, data->o_arg.fmode); |
cdd4e68b | 1356 | out_free: |
c6d00e63 | 1357 | nfs4_opendata_put(data); |
cdd4e68b TM |
1358 | } |
1359 | ||
1360 | static const struct rpc_call_ops nfs4_open_confirm_ops = { | |
cdd4e68b TM |
1361 | .rpc_call_done = nfs4_open_confirm_done, |
1362 | .rpc_release = nfs4_open_confirm_release, | |
1363 | }; | |
1364 | ||
1365 | /* | |
1366 | * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata | |
1367 | */ | |
1368 | static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) | |
1369 | { | |
1370 | struct nfs_server *server = NFS_SERVER(data->dir->d_inode); | |
1371 | struct rpc_task *task; | |
5138fde0 TM |
1372 | struct rpc_message msg = { |
1373 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM], | |
1374 | .rpc_argp = &data->c_arg, | |
1375 | .rpc_resp = &data->c_res, | |
1376 | .rpc_cred = data->owner->so_cred, | |
1377 | }; | |
c970aa85 TM |
1378 | struct rpc_task_setup task_setup_data = { |
1379 | .rpc_client = server->client, | |
5138fde0 | 1380 | .rpc_message = &msg, |
c970aa85 TM |
1381 | .callback_ops = &nfs4_open_confirm_ops, |
1382 | .callback_data = data, | |
101070ca | 1383 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1384 | .flags = RPC_TASK_ASYNC, |
1385 | }; | |
1da177e4 LT |
1386 | int status; |
1387 | ||
c6d00e63 | 1388 | kref_get(&data->kref); |
3e309914 TM |
1389 | data->rpc_done = 0; |
1390 | data->rpc_status = 0; | |
5138fde0 | 1391 | data->timestamp = jiffies; |
c970aa85 | 1392 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 1393 | if (IS_ERR(task)) |
cdd4e68b | 1394 | return PTR_ERR(task); |
cdd4e68b TM |
1395 | status = nfs4_wait_for_completion_rpc_task(task); |
1396 | if (status != 0) { | |
1397 | data->cancelled = 1; | |
1398 | smp_wmb(); | |
1399 | } else | |
1400 | status = data->rpc_status; | |
e6b3c4db | 1401 | rpc_put_task(task); |
1da177e4 LT |
1402 | return status; |
1403 | } | |
1404 | ||
24ac23ab | 1405 | static void nfs4_open_prepare(struct rpc_task *task, void *calldata) |
1da177e4 | 1406 | { |
24ac23ab TM |
1407 | struct nfs4_opendata *data = calldata; |
1408 | struct nfs4_state_owner *sp = data->owner; | |
5138fde0 | 1409 | |
24ac23ab TM |
1410 | if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0) |
1411 | return; | |
aac00a8d TM |
1412 | /* |
1413 | * Check if we still need to send an OPEN call, or if we can use | |
1414 | * a delegation instead. | |
1415 | */ | |
1416 | if (data->state != NULL) { | |
1417 | struct nfs_delegation *delegation; | |
1418 | ||
dc0b027d | 1419 | if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags)) |
6ee41268 | 1420 | goto out_no_action; |
aac00a8d TM |
1421 | rcu_read_lock(); |
1422 | delegation = rcu_dereference(NFS_I(data->state->inode)->delegation); | |
1423 | if (delegation != NULL && | |
15c831bf | 1424 | test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) == 0) { |
aac00a8d | 1425 | rcu_read_unlock(); |
6ee41268 | 1426 | goto out_no_action; |
aac00a8d TM |
1427 | } |
1428 | rcu_read_unlock(); | |
1429 | } | |
24ac23ab | 1430 | /* Update sequence id. */ |
9f958ab8 | 1431 | data->o_arg.id = sp->so_owner_id.id; |
1f0e890d | 1432 | data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; |
6f220ed5 | 1433 | if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { |
5138fde0 | 1434 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; |
6f220ed5 TM |
1435 | nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); |
1436 | } | |
26e976a8 | 1437 | data->timestamp = jiffies; |
035168ab | 1438 | if (nfs4_setup_sequence(data->o_arg.server, |
d898528c AA |
1439 | &data->o_arg.seq_args, |
1440 | &data->o_res.seq_res, 1, task)) | |
1441 | return; | |
5138fde0 | 1442 | rpc_call_start(task); |
6ee41268 TM |
1443 | return; |
1444 | out_no_action: | |
1445 | task->tk_action = NULL; | |
1446 | ||
24ac23ab | 1447 | } |
1da177e4 | 1448 | |
b257957e AB |
1449 | static void nfs4_recover_open_prepare(struct rpc_task *task, void *calldata) |
1450 | { | |
1451 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
1452 | nfs4_open_prepare(task, calldata); | |
1453 | } | |
1454 | ||
24ac23ab TM |
1455 | static void nfs4_open_done(struct rpc_task *task, void *calldata) |
1456 | { | |
1457 | struct nfs4_opendata *data = calldata; | |
1da177e4 | 1458 | |
24ac23ab | 1459 | data->rpc_status = task->tk_status; |
d898528c | 1460 | |
14516c3a TM |
1461 | if (!nfs4_sequence_done(task, &data->o_res.seq_res)) |
1462 | return; | |
d898528c | 1463 | |
24ac23ab TM |
1464 | if (task->tk_status == 0) { |
1465 | switch (data->o_res.f_attr->mode & S_IFMT) { | |
6f926b5b TM |
1466 | case S_IFREG: |
1467 | break; | |
1468 | case S_IFLNK: | |
24ac23ab | 1469 | data->rpc_status = -ELOOP; |
6f926b5b TM |
1470 | break; |
1471 | case S_IFDIR: | |
24ac23ab | 1472 | data->rpc_status = -EISDIR; |
6f926b5b TM |
1473 | break; |
1474 | default: | |
24ac23ab | 1475 | data->rpc_status = -ENOTDIR; |
6f926b5b | 1476 | } |
26e976a8 | 1477 | renew_lease(data->o_res.server, data->timestamp); |
0f9f95e0 TM |
1478 | if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)) |
1479 | nfs_confirm_seqid(&data->owner->so_seqid, 0); | |
6f926b5b | 1480 | } |
3e309914 | 1481 | data->rpc_done = 1; |
24ac23ab | 1482 | } |
6f926b5b | 1483 | |
24ac23ab TM |
1484 | static void nfs4_open_release(void *calldata) |
1485 | { | |
1486 | struct nfs4_opendata *data = calldata; | |
1487 | struct nfs4_state *state = NULL; | |
1488 | ||
1489 | /* If this request hasn't been cancelled, do nothing */ | |
1490 | if (data->cancelled == 0) | |
1491 | goto out_free; | |
1492 | /* In case of error, no cleanup! */ | |
3e309914 | 1493 | if (data->rpc_status != 0 || !data->rpc_done) |
24ac23ab TM |
1494 | goto out_free; |
1495 | /* In case we need an open_confirm, no cleanup! */ | |
1496 | if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM) | |
1497 | goto out_free; | |
24ac23ab | 1498 | state = nfs4_opendata_to_nfs4_state(data); |
1b370bc2 | 1499 | if (!IS_ERR(state)) |
dc0b027d | 1500 | nfs4_close_state(&data->path, state, data->o_arg.fmode); |
24ac23ab | 1501 | out_free: |
c6d00e63 | 1502 | nfs4_opendata_put(data); |
24ac23ab TM |
1503 | } |
1504 | ||
1505 | static const struct rpc_call_ops nfs4_open_ops = { | |
1506 | .rpc_call_prepare = nfs4_open_prepare, | |
1507 | .rpc_call_done = nfs4_open_done, | |
1508 | .rpc_release = nfs4_open_release, | |
1509 | }; | |
1510 | ||
b257957e AB |
1511 | static const struct rpc_call_ops nfs4_recover_open_ops = { |
1512 | .rpc_call_prepare = nfs4_recover_open_prepare, | |
1513 | .rpc_call_done = nfs4_open_done, | |
1514 | .rpc_release = nfs4_open_release, | |
1515 | }; | |
1516 | ||
1517 | static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) | |
24ac23ab TM |
1518 | { |
1519 | struct inode *dir = data->dir->d_inode; | |
1520 | struct nfs_server *server = NFS_SERVER(dir); | |
1521 | struct nfs_openargs *o_arg = &data->o_arg; | |
1522 | struct nfs_openres *o_res = &data->o_res; | |
1523 | struct rpc_task *task; | |
5138fde0 TM |
1524 | struct rpc_message msg = { |
1525 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN], | |
1526 | .rpc_argp = o_arg, | |
1527 | .rpc_resp = o_res, | |
1528 | .rpc_cred = data->owner->so_cred, | |
1529 | }; | |
c970aa85 TM |
1530 | struct rpc_task_setup task_setup_data = { |
1531 | .rpc_client = server->client, | |
5138fde0 | 1532 | .rpc_message = &msg, |
c970aa85 TM |
1533 | .callback_ops = &nfs4_open_ops, |
1534 | .callback_data = data, | |
101070ca | 1535 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
1536 | .flags = RPC_TASK_ASYNC, |
1537 | }; | |
24ac23ab TM |
1538 | int status; |
1539 | ||
c6d00e63 | 1540 | kref_get(&data->kref); |
3e309914 TM |
1541 | data->rpc_done = 0; |
1542 | data->rpc_status = 0; | |
2ced46c2 | 1543 | data->cancelled = 0; |
b257957e AB |
1544 | if (isrecover) |
1545 | task_setup_data.callback_ops = &nfs4_recover_open_ops; | |
c970aa85 | 1546 | task = rpc_run_task(&task_setup_data); |
b257957e AB |
1547 | if (IS_ERR(task)) |
1548 | return PTR_ERR(task); | |
1549 | status = nfs4_wait_for_completion_rpc_task(task); | |
1550 | if (status != 0) { | |
1551 | data->cancelled = 1; | |
1552 | smp_wmb(); | |
1553 | } else | |
1554 | status = data->rpc_status; | |
1555 | rpc_put_task(task); | |
1556 | ||
1557 | return status; | |
1558 | } | |
1559 | ||
1560 | static int _nfs4_recover_proc_open(struct nfs4_opendata *data) | |
1561 | { | |
1562 | struct inode *dir = data->dir->d_inode; | |
1563 | struct nfs_openres *o_res = &data->o_res; | |
1564 | int status; | |
1565 | ||
1566 | status = nfs4_run_open_task(data, 1); | |
1567 | if (status != 0 || !data->rpc_done) | |
1568 | return status; | |
1569 | ||
1570 | nfs_refresh_inode(dir, o_res->dir_attr); | |
1571 | ||
1572 | if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { | |
1573 | status = _nfs4_proc_open_confirm(data); | |
1574 | if (status != 0) | |
1575 | return status; | |
1576 | } | |
1577 | ||
1578 | return status; | |
1579 | } | |
1580 | ||
1581 | /* | |
1582 | * Note: On error, nfs4_proc_open will free the struct nfs4_opendata | |
1583 | */ | |
1584 | static int _nfs4_proc_open(struct nfs4_opendata *data) | |
1585 | { | |
1586 | struct inode *dir = data->dir->d_inode; | |
1587 | struct nfs_server *server = NFS_SERVER(dir); | |
1588 | struct nfs_openargs *o_arg = &data->o_arg; | |
1589 | struct nfs_openres *o_res = &data->o_res; | |
1590 | int status; | |
1591 | ||
1592 | status = nfs4_run_open_task(data, 0); | |
3e309914 | 1593 | if (status != 0 || !data->rpc_done) |
24ac23ab TM |
1594 | return status; |
1595 | ||
56ae19f3 TM |
1596 | if (o_arg->open_flags & O_CREAT) { |
1597 | update_changeattr(dir, &o_res->cinfo); | |
1598 | nfs_post_op_update_inode(dir, o_res->dir_attr); | |
1599 | } else | |
1600 | nfs_refresh_inode(dir, o_res->dir_attr); | |
0df5dd4a TM |
1601 | if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) |
1602 | server->caps &= ~NFS_CAP_POSIX_LOCK; | |
1da177e4 | 1603 | if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { |
cdd4e68b | 1604 | status = _nfs4_proc_open_confirm(data); |
1da177e4 | 1605 | if (status != 0) |
24ac23ab | 1606 | return status; |
1da177e4 LT |
1607 | } |
1608 | if (!(o_res->f_attr->valid & NFS_ATTR_FATTR)) | |
9936781d | 1609 | _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr); |
24ac23ab | 1610 | return 0; |
1da177e4 LT |
1611 | } |
1612 | ||
d83217c1 | 1613 | static int nfs4_client_recover_expired_lease(struct nfs_client *clp) |
58d9714a | 1614 | { |
a78cb57a | 1615 | unsigned int loop; |
6b30954e | 1616 | int ret; |
58d9714a | 1617 | |
a78cb57a | 1618 | for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) { |
65de872e | 1619 | ret = nfs4_wait_clnt_recover(clp); |
6b30954e | 1620 | if (ret != 0) |
a78cb57a | 1621 | break; |
e598d843 TM |
1622 | if (!test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) && |
1623 | !test_bit(NFS4CLNT_CHECK_LEASE,&clp->cl_state)) | |
6b30954e | 1624 | break; |
0400a6b0 | 1625 | nfs4_schedule_state_manager(clp); |
a78cb57a | 1626 | ret = -EIO; |
6b30954e | 1627 | } |
a78cb57a | 1628 | return ret; |
58d9714a TM |
1629 | } |
1630 | ||
d83217c1 AA |
1631 | static int nfs4_recover_expired_lease(struct nfs_server *server) |
1632 | { | |
1633 | return nfs4_client_recover_expired_lease(server->nfs_client); | |
1634 | } | |
1635 | ||
1da177e4 LT |
1636 | /* |
1637 | * OPEN_EXPIRED: | |
1638 | * reclaim state on the server after a network partition. | |
1639 | * Assumes caller holds the appropriate lock | |
1640 | */ | |
539cd03a | 1641 | static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
1da177e4 | 1642 | { |
e56e0b78 | 1643 | struct nfs4_opendata *opendata; |
864472e9 | 1644 | int ret; |
1da177e4 | 1645 | |
6f220ed5 TM |
1646 | opendata = nfs4_open_recoverdata_alloc(ctx, state); |
1647 | if (IS_ERR(opendata)) | |
1648 | return PTR_ERR(opendata); | |
864472e9 | 1649 | ret = nfs4_open_recover(opendata, state); |
35d05778 | 1650 | if (ret == -ESTALE) |
539cd03a | 1651 | d_drop(ctx->path.dentry); |
c6d00e63 | 1652 | nfs4_opendata_put(opendata); |
864472e9 | 1653 | return ret; |
1da177e4 LT |
1654 | } |
1655 | ||
a9ed2e25 | 1656 | static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state) |
202b50dc | 1657 | { |
539cd03a | 1658 | struct nfs_server *server = NFS_SERVER(state->inode); |
202b50dc TM |
1659 | struct nfs4_exception exception = { }; |
1660 | int err; | |
1661 | ||
1662 | do { | |
539cd03a | 1663 | err = _nfs4_open_expired(ctx, state); |
a9ed2e25 TM |
1664 | switch (err) { |
1665 | default: | |
1666 | goto out; | |
1667 | case -NFS4ERR_GRACE: | |
1668 | case -NFS4ERR_DELAY: | |
1669 | nfs4_handle_exception(server, err, &exception); | |
1670 | err = 0; | |
1671 | } | |
202b50dc | 1672 | } while (exception.retry); |
a9ed2e25 | 1673 | out: |
202b50dc TM |
1674 | return err; |
1675 | } | |
1676 | ||
1da177e4 LT |
1677 | static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) |
1678 | { | |
1da177e4 | 1679 | struct nfs_open_context *ctx; |
864472e9 | 1680 | int ret; |
1da177e4 | 1681 | |
864472e9 TM |
1682 | ctx = nfs4_state_find_open_context(state); |
1683 | if (IS_ERR(ctx)) | |
1684 | return PTR_ERR(ctx); | |
539cd03a | 1685 | ret = nfs4_do_open_expired(ctx, state); |
864472e9 TM |
1686 | put_nfs_open_context(ctx); |
1687 | return ret; | |
1da177e4 LT |
1688 | } |
1689 | ||
aa53ed54 JL |
1690 | /* |
1691 | * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-* | |
1692 | * fields corresponding to attributes that were used to store the verifier. | |
1693 | * Make sure we clobber those fields in the later setattr call | |
1694 | */ | |
1695 | static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr) | |
1696 | { | |
1697 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) && | |
1698 | !(sattr->ia_valid & ATTR_ATIME_SET)) | |
1699 | sattr->ia_valid |= ATTR_ATIME; | |
1700 | ||
1701 | if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) && | |
1702 | !(sattr->ia_valid & ATTR_MTIME_SET)) | |
1703 | sattr->ia_valid |= ATTR_MTIME; | |
1704 | } | |
1705 | ||
1da177e4 | 1706 | /* |
24ac23ab | 1707 | * Returns a referenced nfs4_state |
1da177e4 | 1708 | */ |
dc0b027d | 1709 | 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 |
1710 | { |
1711 | struct nfs4_state_owner *sp; | |
1712 | struct nfs4_state *state = NULL; | |
1713 | struct nfs_server *server = NFS_SERVER(dir); | |
e56e0b78 | 1714 | struct nfs4_opendata *opendata; |
aac00a8d | 1715 | int status; |
1da177e4 LT |
1716 | |
1717 | /* Protect against reboot recovery conflicts */ | |
1da177e4 LT |
1718 | status = -ENOMEM; |
1719 | if (!(sp = nfs4_get_state_owner(server, cred))) { | |
1720 | dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); | |
1721 | goto out_err; | |
1722 | } | |
58d9714a TM |
1723 | status = nfs4_recover_expired_lease(server); |
1724 | if (status != 0) | |
b4454fe1 | 1725 | goto err_put_state_owner; |
aac00a8d | 1726 | if (path->dentry->d_inode != NULL) |
dc0b027d | 1727 | nfs4_return_incompatible_delegation(path->dentry->d_inode, fmode); |
58d9714a | 1728 | status = -ENOMEM; |
8535b2be | 1729 | opendata = nfs4_opendata_alloc(path, sp, fmode, flags, sattr, GFP_KERNEL); |
e56e0b78 | 1730 | if (opendata == NULL) |
95d35cb4 | 1731 | goto err_put_state_owner; |
1da177e4 | 1732 | |
aac00a8d TM |
1733 | if (path->dentry->d_inode != NULL) |
1734 | opendata->state = nfs4_get_open_state(path->dentry->d_inode, sp); | |
1735 | ||
24ac23ab | 1736 | status = _nfs4_proc_open(opendata); |
1da177e4 | 1737 | if (status != 0) |
c6d00e63 | 1738 | goto err_opendata_put; |
1da177e4 | 1739 | |
24ac23ab | 1740 | state = nfs4_opendata_to_nfs4_state(opendata); |
1b370bc2 TM |
1741 | status = PTR_ERR(state); |
1742 | if (IS_ERR(state)) | |
c6d00e63 | 1743 | goto err_opendata_put; |
0df5dd4a | 1744 | if (server->caps & NFS_CAP_POSIX_LOCK) |
8e469ebd | 1745 | set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); |
0ab64e0e TM |
1746 | |
1747 | if (opendata->o_arg.open_flags & O_EXCL) { | |
1748 | nfs4_exclusive_attrset(opendata, sattr); | |
1749 | ||
1750 | nfs_fattr_init(opendata->o_res.f_attr); | |
1751 | status = nfs4_do_setattr(state->inode, cred, | |
1752 | opendata->o_res.f_attr, sattr, | |
1753 | state); | |
1754 | if (status == 0) | |
1755 | nfs_setattr_update_inode(state->inode, sattr); | |
1756 | nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr); | |
1757 | } | |
c6d00e63 | 1758 | nfs4_opendata_put(opendata); |
1da177e4 | 1759 | nfs4_put_state_owner(sp); |
1da177e4 LT |
1760 | *res = state; |
1761 | return 0; | |
c6d00e63 TM |
1762 | err_opendata_put: |
1763 | nfs4_opendata_put(opendata); | |
e56e0b78 TM |
1764 | err_put_state_owner: |
1765 | nfs4_put_state_owner(sp); | |
1da177e4 | 1766 | out_err: |
1da177e4 LT |
1767 | *res = NULL; |
1768 | return status; | |
1769 | } | |
1770 | ||
1771 | ||
dc0b027d | 1772 | 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 |
1773 | { |
1774 | struct nfs4_exception exception = { }; | |
1775 | struct nfs4_state *res; | |
1776 | int status; | |
1777 | ||
1778 | do { | |
dc0b027d | 1779 | status = _nfs4_do_open(dir, path, fmode, flags, sattr, cred, &res); |
1da177e4 LT |
1780 | if (status == 0) |
1781 | break; | |
1782 | /* NOTE: BAD_SEQID means the server and client disagree about the | |
1783 | * book-keeping w.r.t. state-changing operations | |
1784 | * (OPEN/CLOSE/LOCK/LOCKU...) | |
1785 | * It is actually a sign of a bug on the client or on the server. | |
1786 | * | |
1787 | * If we receive a BAD_SEQID error in the particular case of | |
cee54fc9 | 1788 | * doing an OPEN, we assume that nfs_increment_open_seqid() will |
1da177e4 LT |
1789 | * have unhashed the old state_owner for us, and that we can |
1790 | * therefore safely retry using a new one. We should still warn | |
1791 | * the user though... | |
1792 | */ | |
1793 | if (status == -NFS4ERR_BAD_SEQID) { | |
6f43ddcc TM |
1794 | printk(KERN_WARNING "NFS: v4 server %s " |
1795 | " returned a bad sequence-id error!\n", | |
1796 | NFS_SERVER(dir)->nfs_client->cl_hostname); | |
1da177e4 LT |
1797 | exception.retry = 1; |
1798 | continue; | |
1799 | } | |
550f5747 TM |
1800 | /* |
1801 | * BAD_STATEID on OPEN means that the server cancelled our | |
1802 | * state before it received the OPEN_CONFIRM. | |
1803 | * Recover by retrying the request as per the discussion | |
1804 | * on Page 181 of RFC3530. | |
1805 | */ | |
1806 | if (status == -NFS4ERR_BAD_STATEID) { | |
1807 | exception.retry = 1; | |
1808 | continue; | |
1809 | } | |
aac00a8d TM |
1810 | if (status == -EAGAIN) { |
1811 | /* We must have found a delegation */ | |
1812 | exception.retry = 1; | |
1813 | continue; | |
1814 | } | |
1da177e4 LT |
1815 | res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir), |
1816 | status, &exception)); | |
1817 | } while (exception.retry); | |
1818 | return res; | |
1819 | } | |
1820 | ||
659bfcd6 TM |
1821 | static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1822 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1823 | struct nfs4_state *state) | |
1da177e4 | 1824 | { |
3e4f6290 | 1825 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 | 1826 | struct nfs_setattrargs arg = { |
3e4f6290 | 1827 | .fh = NFS_FH(inode), |
1da177e4 LT |
1828 | .iap = sattr, |
1829 | .server = server, | |
1830 | .bitmask = server->attr_bitmask, | |
1831 | }; | |
1832 | struct nfs_setattrres res = { | |
1833 | .fattr = fattr, | |
1834 | .server = server, | |
1835 | }; | |
1836 | struct rpc_message msg = { | |
659bfcd6 TM |
1837 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], |
1838 | .rpc_argp = &arg, | |
1839 | .rpc_resp = &res, | |
1840 | .rpc_cred = cred, | |
1da177e4 | 1841 | }; |
26e976a8 | 1842 | unsigned long timestamp = jiffies; |
65e4308d | 1843 | int status; |
1da177e4 | 1844 | |
0e574af1 | 1845 | nfs_fattr_init(fattr); |
1da177e4 | 1846 | |
3e4f6290 TM |
1847 | if (nfs4_copy_delegation_stateid(&arg.stateid, inode)) { |
1848 | /* Use that stateid */ | |
1849 | } else if (state != NULL) { | |
77041ed9 | 1850 | nfs4_copy_stateid(&arg.stateid, state, current->files, current->tgid); |
08e9eac4 | 1851 | } else |
1da177e4 LT |
1852 | memcpy(&arg.stateid, &zero_stateid, sizeof(arg.stateid)); |
1853 | ||
7c513058 | 1854 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
26e976a8 TM |
1855 | if (status == 0 && state != NULL) |
1856 | renew_lease(server, timestamp); | |
65e4308d | 1857 | return status; |
1da177e4 LT |
1858 | } |
1859 | ||
659bfcd6 TM |
1860 | static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, |
1861 | struct nfs_fattr *fattr, struct iattr *sattr, | |
1862 | struct nfs4_state *state) | |
1da177e4 | 1863 | { |
3e4f6290 | 1864 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
1865 | struct nfs4_exception exception = { }; |
1866 | int err; | |
1867 | do { | |
1868 | err = nfs4_handle_exception(server, | |
659bfcd6 | 1869 | _nfs4_do_setattr(inode, cred, fattr, sattr, state), |
1da177e4 LT |
1870 | &exception); |
1871 | } while (exception.retry); | |
1872 | return err; | |
1873 | } | |
1874 | ||
1875 | struct nfs4_closedata { | |
4a35bd41 | 1876 | struct path path; |
1da177e4 LT |
1877 | struct inode *inode; |
1878 | struct nfs4_state *state; | |
1879 | struct nfs_closeargs arg; | |
1880 | struct nfs_closeres res; | |
516a6af6 | 1881 | struct nfs_fattr fattr; |
26e976a8 | 1882 | unsigned long timestamp; |
f7e8917a FI |
1883 | bool roc; |
1884 | u32 roc_barrier; | |
1da177e4 LT |
1885 | }; |
1886 | ||
963d8fe5 | 1887 | static void nfs4_free_closedata(void *data) |
9512135d | 1888 | { |
963d8fe5 TM |
1889 | struct nfs4_closedata *calldata = data; |
1890 | struct nfs4_state_owner *sp = calldata->state->owner; | |
9512135d | 1891 | |
f7e8917a FI |
1892 | if (calldata->roc) |
1893 | pnfs_roc_release(calldata->state->inode); | |
9512135d TM |
1894 | nfs4_put_open_state(calldata->state); |
1895 | nfs_free_seqid(calldata->arg.seqid); | |
9512135d | 1896 | nfs4_put_state_owner(sp); |
31f31db1 | 1897 | path_put(&calldata->path); |
9512135d TM |
1898 | kfree(calldata); |
1899 | } | |
1900 | ||
88069f77 TM |
1901 | static void nfs4_close_clear_stateid_flags(struct nfs4_state *state, |
1902 | fmode_t fmode) | |
1903 | { | |
1904 | spin_lock(&state->owner->so_lock); | |
1905 | if (!(fmode & FMODE_READ)) | |
1906 | clear_bit(NFS_O_RDONLY_STATE, &state->flags); | |
1907 | if (!(fmode & FMODE_WRITE)) | |
1908 | clear_bit(NFS_O_WRONLY_STATE, &state->flags); | |
1909 | clear_bit(NFS_O_RDWR_STATE, &state->flags); | |
1910 | spin_unlock(&state->owner->so_lock); | |
1911 | } | |
1912 | ||
963d8fe5 | 1913 | static void nfs4_close_done(struct rpc_task *task, void *data) |
1da177e4 | 1914 | { |
963d8fe5 | 1915 | struct nfs4_closedata *calldata = data; |
1da177e4 | 1916 | struct nfs4_state *state = calldata->state; |
1da177e4 LT |
1917 | struct nfs_server *server = NFS_SERVER(calldata->inode); |
1918 | ||
14516c3a TM |
1919 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
1920 | return; | |
1da177e4 LT |
1921 | /* hmm. we are done with the inode, and in the process of freeing |
1922 | * the state_owner. we keep this around to process errors | |
1923 | */ | |
1da177e4 LT |
1924 | switch (task->tk_status) { |
1925 | case 0: | |
f7e8917a FI |
1926 | if (calldata->roc) |
1927 | pnfs_roc_set_barrier(state->inode, | |
1928 | calldata->roc_barrier); | |
45328c35 | 1929 | nfs_set_open_stateid(state, &calldata->res.stateid, 0); |
26e976a8 | 1930 | renew_lease(server, calldata->timestamp); |
88069f77 TM |
1931 | nfs4_close_clear_stateid_flags(state, |
1932 | calldata->arg.fmode); | |
1da177e4 LT |
1933 | break; |
1934 | case -NFS4ERR_STALE_STATEID: | |
9e33bed5 TM |
1935 | case -NFS4ERR_OLD_STATEID: |
1936 | case -NFS4ERR_BAD_STATEID: | |
1da177e4 | 1937 | case -NFS4ERR_EXPIRED: |
dc0b027d | 1938 | if (calldata->arg.fmode == 0) |
9e33bed5 | 1939 | break; |
1da177e4 | 1940 | default: |
72211dbe TM |
1941 | if (nfs4_async_handle_error(task, server, state) == -EAGAIN) |
1942 | rpc_restart_call_prepare(task); | |
1da177e4 | 1943 | } |
72211dbe | 1944 | nfs_release_seqid(calldata->arg.seqid); |
516a6af6 | 1945 | nfs_refresh_inode(calldata->inode, calldata->res.fattr); |
1da177e4 LT |
1946 | } |
1947 | ||
4ce70ada | 1948 | static void nfs4_close_prepare(struct rpc_task *task, void *data) |
1da177e4 | 1949 | { |
4ce70ada | 1950 | struct nfs4_closedata *calldata = data; |
9512135d | 1951 | struct nfs4_state *state = calldata->state; |
88069f77 | 1952 | int call_close = 0; |
9512135d | 1953 | |
963d8fe5 | 1954 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
9512135d | 1955 | return; |
003707c7 | 1956 | |
88069f77 TM |
1957 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; |
1958 | calldata->arg.fmode = FMODE_READ|FMODE_WRITE; | |
4cecb76f | 1959 | spin_lock(&state->owner->so_lock); |
003707c7 | 1960 | /* Calculate the change in open mode */ |
e7616923 | 1961 | if (state->n_rdwr == 0) { |
003707c7 | 1962 | if (state->n_rdonly == 0) { |
88069f77 TM |
1963 | call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); |
1964 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
1965 | calldata->arg.fmode &= ~FMODE_READ; | |
003707c7 TM |
1966 | } |
1967 | if (state->n_wronly == 0) { | |
88069f77 TM |
1968 | call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); |
1969 | call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); | |
1970 | calldata->arg.fmode &= ~FMODE_WRITE; | |
003707c7 | 1971 | } |
e7616923 | 1972 | } |
4cecb76f | 1973 | spin_unlock(&state->owner->so_lock); |
88069f77 TM |
1974 | |
1975 | if (!call_close) { | |
963d8fe5 TM |
1976 | /* Note: exit _without_ calling nfs4_close_done */ |
1977 | task->tk_action = NULL; | |
9512135d TM |
1978 | return; |
1979 | } | |
88069f77 | 1980 | |
f7e8917a | 1981 | if (calldata->arg.fmode == 0) { |
88069f77 | 1982 | task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE]; |
f7e8917a FI |
1983 | if (calldata->roc && |
1984 | pnfs_roc_drain(calldata->inode, &calldata->roc_barrier)) { | |
1985 | rpc_sleep_on(&NFS_SERVER(calldata->inode)->roc_rpcwaitq, | |
1986 | task, NULL); | |
1987 | return; | |
1988 | } | |
1989 | } | |
88069f77 | 1990 | |
516a6af6 | 1991 | nfs_fattr_init(calldata->res.fattr); |
26e976a8 | 1992 | calldata->timestamp = jiffies; |
035168ab | 1993 | if (nfs4_setup_sequence(NFS_SERVER(calldata->inode), |
19ddab06 AA |
1994 | &calldata->arg.seq_args, &calldata->res.seq_res, |
1995 | 1, task)) | |
1996 | return; | |
5138fde0 | 1997 | rpc_call_start(task); |
1da177e4 LT |
1998 | } |
1999 | ||
963d8fe5 | 2000 | static const struct rpc_call_ops nfs4_close_ops = { |
4ce70ada | 2001 | .rpc_call_prepare = nfs4_close_prepare, |
963d8fe5 TM |
2002 | .rpc_call_done = nfs4_close_done, |
2003 | .rpc_release = nfs4_free_closedata, | |
2004 | }; | |
2005 | ||
1da177e4 LT |
2006 | /* |
2007 | * It is possible for data to be read/written from a mem-mapped file | |
2008 | * after the sys_close call (which hits the vfs layer as a flush). | |
2009 | * This means that we can't safely call nfsv4 close on a file until | |
2010 | * the inode is cleared. This in turn means that we are not good | |
2011 | * NFSv4 citizens - we do not indicate to the server to update the file's | |
2012 | * share state even when we are done with one of the three share | |
2013 | * stateid's in the inode. | |
2014 | * | |
2015 | * NOTE: Caller must be holding the sp->so_owner semaphore! | |
2016 | */ | |
f7e8917a | 2017 | int nfs4_do_close(struct path *path, struct nfs4_state *state, gfp_t gfp_mask, int wait, bool roc) |
1da177e4 | 2018 | { |
4a35bd41 | 2019 | struct nfs_server *server = NFS_SERVER(state->inode); |
1da177e4 | 2020 | struct nfs4_closedata *calldata; |
b39e625b TM |
2021 | struct nfs4_state_owner *sp = state->owner; |
2022 | struct rpc_task *task; | |
5138fde0 TM |
2023 | struct rpc_message msg = { |
2024 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE], | |
2025 | .rpc_cred = state->owner->so_cred, | |
2026 | }; | |
c970aa85 TM |
2027 | struct rpc_task_setup task_setup_data = { |
2028 | .rpc_client = server->client, | |
5138fde0 | 2029 | .rpc_message = &msg, |
c970aa85 | 2030 | .callback_ops = &nfs4_close_ops, |
101070ca | 2031 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
2032 | .flags = RPC_TASK_ASYNC, |
2033 | }; | |
9512135d | 2034 | int status = -ENOMEM; |
1da177e4 | 2035 | |
8535b2be | 2036 | calldata = kzalloc(sizeof(*calldata), gfp_mask); |
1da177e4 | 2037 | if (calldata == NULL) |
9512135d | 2038 | goto out; |
4a35bd41 | 2039 | calldata->inode = state->inode; |
1da177e4 | 2040 | calldata->state = state; |
4a35bd41 | 2041 | calldata->arg.fh = NFS_FH(state->inode); |
003707c7 | 2042 | calldata->arg.stateid = &state->open_stateid; |
1da177e4 | 2043 | /* Serialization for the sequence id */ |
8535b2be | 2044 | calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask); |
9512135d TM |
2045 | if (calldata->arg.seqid == NULL) |
2046 | goto out_free_calldata; | |
dc0b027d | 2047 | calldata->arg.fmode = 0; |
a65318bf | 2048 | calldata->arg.bitmask = server->cache_consistency_bitmask; |
516a6af6 | 2049 | calldata->res.fattr = &calldata->fattr; |
c1d51931 | 2050 | calldata->res.seqid = calldata->arg.seqid; |
516a6af6 | 2051 | calldata->res.server = server; |
f7e8917a | 2052 | calldata->roc = roc; |
f6948697 AV |
2053 | path_get(path); |
2054 | calldata->path = *path; | |
9512135d | 2055 | |
1174dd1f TM |
2056 | msg.rpc_argp = &calldata->arg; |
2057 | msg.rpc_resp = &calldata->res; | |
c970aa85 TM |
2058 | task_setup_data.callback_data = calldata; |
2059 | task = rpc_run_task(&task_setup_data); | |
b39e625b TM |
2060 | if (IS_ERR(task)) |
2061 | return PTR_ERR(task); | |
a49c3c77 TM |
2062 | status = 0; |
2063 | if (wait) | |
2064 | status = rpc_wait_for_completion_task(task); | |
b39e625b | 2065 | rpc_put_task(task); |
a49c3c77 | 2066 | return status; |
9512135d TM |
2067 | out_free_calldata: |
2068 | kfree(calldata); | |
2069 | out: | |
f7e8917a FI |
2070 | if (roc) |
2071 | pnfs_roc_release(state->inode); | |
b39e625b TM |
2072 | nfs4_put_open_state(state); |
2073 | nfs4_put_state_owner(sp); | |
9512135d | 2074 | return status; |
1da177e4 LT |
2075 | } |
2076 | ||
2b484297 | 2077 | static struct inode * |
cd9a1c0e | 2078 | nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr) |
1da177e4 | 2079 | { |
1da177e4 | 2080 | struct nfs4_state *state; |
1da177e4 | 2081 | |
565277f6 | 2082 | /* Protect against concurrent sillydeletes */ |
cd9a1c0e | 2083 | state = nfs4_do_open(dir, &ctx->path, ctx->mode, open_flags, attr, ctx->cred); |
f46e0bd3 TM |
2084 | if (IS_ERR(state)) |
2085 | return ERR_CAST(state); | |
cd9a1c0e | 2086 | ctx->state = state; |
f46e0bd3 | 2087 | return igrab(state->inode); |
1da177e4 LT |
2088 | } |
2089 | ||
1185a552 | 2090 | static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) |
7fe5c398 TM |
2091 | { |
2092 | if (ctx->state == NULL) | |
2093 | return; | |
2094 | if (is_sync) | |
2095 | nfs4_close_sync(&ctx->path, ctx->state, ctx->mode); | |
2096 | else | |
2097 | nfs4_close_state(&ctx->path, ctx->state, ctx->mode); | |
2098 | } | |
1da177e4 LT |
2099 | |
2100 | static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) | |
2101 | { | |
43652ad5 BH |
2102 | struct nfs4_server_caps_arg args = { |
2103 | .fhandle = fhandle, | |
2104 | }; | |
1da177e4 LT |
2105 | struct nfs4_server_caps_res res = {}; |
2106 | struct rpc_message msg = { | |
2107 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS], | |
43652ad5 | 2108 | .rpc_argp = &args, |
1da177e4 LT |
2109 | .rpc_resp = &res, |
2110 | }; | |
2111 | int status; | |
2112 | ||
7c513058 | 2113 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2114 | if (status == 0) { |
2115 | memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask)); | |
62ab460c TM |
2116 | server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS| |
2117 | NFS_CAP_SYMLINKS|NFS_CAP_FILEID| | |
2118 | NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER| | |
2119 | NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME| | |
2120 | NFS_CAP_CTIME|NFS_CAP_MTIME); | |
1da177e4 LT |
2121 | if (res.attr_bitmask[0] & FATTR4_WORD0_ACL) |
2122 | server->caps |= NFS_CAP_ACLS; | |
2123 | if (res.has_links != 0) | |
2124 | server->caps |= NFS_CAP_HARDLINKS; | |
2125 | if (res.has_symlinks != 0) | |
2126 | server->caps |= NFS_CAP_SYMLINKS; | |
62ab460c TM |
2127 | if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID) |
2128 | server->caps |= NFS_CAP_FILEID; | |
2129 | if (res.attr_bitmask[1] & FATTR4_WORD1_MODE) | |
2130 | server->caps |= NFS_CAP_MODE; | |
2131 | if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS) | |
2132 | server->caps |= NFS_CAP_NLINK; | |
2133 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER) | |
2134 | server->caps |= NFS_CAP_OWNER; | |
2135 | if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP) | |
2136 | server->caps |= NFS_CAP_OWNER_GROUP; | |
2137 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS) | |
2138 | server->caps |= NFS_CAP_ATIME; | |
2139 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA) | |
2140 | server->caps |= NFS_CAP_CTIME; | |
2141 | if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) | |
2142 | server->caps |= NFS_CAP_MTIME; | |
2143 | ||
a65318bf TM |
2144 | memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); |
2145 | server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; | |
2146 | server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; | |
1da177e4 LT |
2147 | server->acl_bitmask = res.acl_bitmask; |
2148 | } | |
cccef3b9 | 2149 | |
1da177e4 LT |
2150 | return status; |
2151 | } | |
2152 | ||
55a97593 | 2153 | int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) |
1da177e4 LT |
2154 | { |
2155 | struct nfs4_exception exception = { }; | |
2156 | int err; | |
2157 | do { | |
2158 | err = nfs4_handle_exception(server, | |
2159 | _nfs4_server_capabilities(server, fhandle), | |
2160 | &exception); | |
2161 | } while (exception.retry); | |
2162 | return err; | |
2163 | } | |
2164 | ||
2165 | static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2166 | struct nfs_fsinfo *info) | |
2167 | { | |
1da177e4 LT |
2168 | struct nfs4_lookup_root_arg args = { |
2169 | .bitmask = nfs4_fattr_bitmap, | |
2170 | }; | |
2171 | struct nfs4_lookup_res res = { | |
2172 | .server = server, | |
0e574af1 | 2173 | .fattr = info->fattr, |
1da177e4 LT |
2174 | .fh = fhandle, |
2175 | }; | |
2176 | struct rpc_message msg = { | |
2177 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT], | |
2178 | .rpc_argp = &args, | |
2179 | .rpc_resp = &res, | |
2180 | }; | |
008f55d0 | 2181 | |
0e574af1 | 2182 | nfs_fattr_init(info->fattr); |
7c513058 | 2183 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2184 | } |
2185 | ||
2186 | static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2187 | struct nfs_fsinfo *info) | |
2188 | { | |
2189 | struct nfs4_exception exception = { }; | |
2190 | int err; | |
2191 | do { | |
fb8a5ba8 BS |
2192 | err = _nfs4_lookup_root(server, fhandle, info); |
2193 | switch (err) { | |
2194 | case 0: | |
2195 | case -NFS4ERR_WRONGSEC: | |
2196 | break; | |
2197 | default: | |
2198 | err = nfs4_handle_exception(server, err, &exception); | |
2199 | } | |
1da177e4 LT |
2200 | } while (exception.retry); |
2201 | return err; | |
2202 | } | |
2203 | ||
8f70e95f BS |
2204 | static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
2205 | struct nfs_fsinfo *info, rpc_authflavor_t flavor) | |
2206 | { | |
2207 | struct rpc_auth *auth; | |
2208 | int ret; | |
2209 | ||
2210 | auth = rpcauth_create(flavor, server->client); | |
2211 | if (!auth) { | |
2212 | ret = -EIO; | |
2213 | goto out; | |
2214 | } | |
2215 | ret = nfs4_lookup_root(server, fhandle, info); | |
8f70e95f BS |
2216 | out: |
2217 | return ret; | |
2218 | } | |
2219 | ||
801a16dc | 2220 | static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, |
54ceac45 | 2221 | struct nfs_fsinfo *info) |
1da177e4 | 2222 | { |
8f70e95f | 2223 | int i, len, status = 0; |
0fabee24 | 2224 | rpc_authflavor_t flav_array[NFS_MAX_SECFLAVORS]; |
1da177e4 | 2225 | |
801a16dc BS |
2226 | len = gss_mech_list_pseudoflavors(&flav_array[0]); |
2227 | flav_array[len] = RPC_AUTH_NULL; | |
2228 | len += 1; | |
8f70e95f BS |
2229 | |
2230 | for (i = 0; i < len; i++) { | |
2231 | status = nfs4_lookup_root_sec(server, fhandle, info, flav_array[i]); | |
fb8a5ba8 | 2232 | if (status == -NFS4ERR_WRONGSEC || status == -EACCES) |
d1a8016a BS |
2233 | continue; |
2234 | break; | |
8f70e95f | 2235 | } |
fb8a5ba8 BS |
2236 | /* |
2237 | * -EACCESS could mean that the user doesn't have correct permissions | |
2238 | * to access the mount. It could also mean that we tried to mount | |
2239 | * with a gss auth flavor, but rpc.gssd isn't running. Either way, | |
2240 | * existing mount programs don't handle -EACCES very well so it should | |
2241 | * be mapped to -EPERM instead. | |
2242 | */ | |
2243 | if (status == -EACCES) | |
2244 | status = -EPERM; | |
801a16dc BS |
2245 | return status; |
2246 | } | |
2247 | ||
2248 | /* | |
2249 | * get the file handle for the "/" directory on the server | |
2250 | */ | |
2251 | static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
2252 | struct nfs_fsinfo *info) | |
2253 | { | |
2254 | int status = nfs4_lookup_root(server, fhandle, info); | |
fb8a5ba8 BS |
2255 | if ((status == -NFS4ERR_WRONGSEC) && !(server->flags & NFS_MOUNT_SECFLAVOUR)) |
2256 | /* | |
2257 | * A status of -NFS4ERR_WRONGSEC will be mapped to -EPERM | |
2258 | * by nfs4_map_errors() as this function exits. | |
2259 | */ | |
801a16dc | 2260 | status = nfs4_find_root_sec(server, fhandle, info); |
1da177e4 LT |
2261 | if (status == 0) |
2262 | status = nfs4_server_capabilities(server, fhandle); | |
2263 | if (status == 0) | |
2264 | status = nfs4_do_fsinfo(server, fhandle, info); | |
c12e87f4 | 2265 | return nfs4_map_errors(status); |
1da177e4 LT |
2266 | } |
2267 | ||
533eb461 | 2268 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); |
6b97fd3d MN |
2269 | /* |
2270 | * Get locations and (maybe) other attributes of a referral. | |
2271 | * Note that we'll actually follow the referral later when | |
2272 | * we detect fsid mismatch in inode revalidation | |
2273 | */ | |
533eb461 AA |
2274 | static int nfs4_get_referral(struct inode *dir, const struct qstr *name, |
2275 | struct nfs_fattr *fattr, struct nfs_fh *fhandle) | |
6b97fd3d MN |
2276 | { |
2277 | int status = -ENOMEM; | |
2278 | struct page *page = NULL; | |
2279 | struct nfs4_fs_locations *locations = NULL; | |
6b97fd3d MN |
2280 | |
2281 | page = alloc_page(GFP_KERNEL); | |
2282 | if (page == NULL) | |
2283 | goto out; | |
2284 | locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL); | |
2285 | if (locations == NULL) | |
2286 | goto out; | |
2287 | ||
c228fd3a | 2288 | status = nfs4_proc_fs_locations(dir, name, locations, page); |
6b97fd3d MN |
2289 | if (status != 0) |
2290 | goto out; | |
2291 | /* Make sure server returned a different fsid for the referral */ | |
2292 | if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) { | |
533eb461 AA |
2293 | dprintk("%s: server did not return a different fsid for" |
2294 | " a referral at %s\n", __func__, name->name); | |
6b97fd3d MN |
2295 | status = -EIO; |
2296 | goto out; | |
2297 | } | |
533eb461 AA |
2298 | /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */ |
2299 | nfs_fixup_referral_attributes(&locations->fattr); | |
6b97fd3d | 2300 | |
533eb461 | 2301 | /* replace the lookup nfs_fattr with the locations nfs_fattr */ |
6b97fd3d | 2302 | memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr)); |
6b97fd3d MN |
2303 | memset(fhandle, 0, sizeof(struct nfs_fh)); |
2304 | out: | |
2305 | if (page) | |
2306 | __free_page(page); | |
5d7ca35a | 2307 | kfree(locations); |
6b97fd3d MN |
2308 | return status; |
2309 | } | |
2310 | ||
1da177e4 LT |
2311 | static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
2312 | { | |
2313 | struct nfs4_getattr_arg args = { | |
2314 | .fh = fhandle, | |
2315 | .bitmask = server->attr_bitmask, | |
2316 | }; | |
2317 | struct nfs4_getattr_res res = { | |
2318 | .fattr = fattr, | |
2319 | .server = server, | |
2320 | }; | |
2321 | struct rpc_message msg = { | |
2322 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR], | |
2323 | .rpc_argp = &args, | |
2324 | .rpc_resp = &res, | |
2325 | }; | |
2326 | ||
0e574af1 | 2327 | nfs_fattr_init(fattr); |
7c513058 | 2328 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2329 | } |
2330 | ||
2331 | static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2332 | { | |
2333 | struct nfs4_exception exception = { }; | |
2334 | int err; | |
2335 | do { | |
2336 | err = nfs4_handle_exception(server, | |
2337 | _nfs4_proc_getattr(server, fhandle, fattr), | |
2338 | &exception); | |
2339 | } while (exception.retry); | |
2340 | return err; | |
2341 | } | |
2342 | ||
2343 | /* | |
2344 | * The file is not closed if it is opened due to the a request to change | |
2345 | * the size of the file. The open call will not be needed once the | |
2346 | * VFS layer lookup-intents are implemented. | |
2347 | * | |
2348 | * Close is called when the inode is destroyed. | |
2349 | * If we haven't opened the file for O_WRONLY, we | |
2350 | * need to in the size_change case to obtain a stateid. | |
2351 | * | |
2352 | * Got race? | |
2353 | * Because OPEN is always done by name in nfsv4, it is | |
2354 | * possible that we opened a different file by the same | |
2355 | * name. We can recognize this race condition, but we | |
2356 | * can't do anything about it besides returning an error. | |
2357 | * | |
2358 | * This will be fixed with VFS changes (lookup-intent). | |
2359 | */ | |
2360 | static int | |
2361 | nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
2362 | struct iattr *sattr) | |
2363 | { | |
08e9eac4 | 2364 | struct inode *inode = dentry->d_inode; |
659bfcd6 | 2365 | struct rpc_cred *cred = NULL; |
d530838b | 2366 | struct nfs4_state *state = NULL; |
1da177e4 LT |
2367 | int status; |
2368 | ||
8a1636c4 BH |
2369 | if (pnfs_ld_layoutret_on_setattr(inode)) |
2370 | pnfs_return_layout(inode); | |
2371 | ||
0e574af1 | 2372 | nfs_fattr_init(fattr); |
1da177e4 | 2373 | |
d530838b | 2374 | /* Search for an existing open(O_WRITE) file */ |
659bfcd6 TM |
2375 | if (sattr->ia_valid & ATTR_FILE) { |
2376 | struct nfs_open_context *ctx; | |
2377 | ||
2378 | ctx = nfs_file_open_context(sattr->ia_file); | |
504e5189 NB |
2379 | if (ctx) { |
2380 | cred = ctx->cred; | |
2381 | state = ctx->state; | |
2382 | } | |
659bfcd6 | 2383 | } |
08e9eac4 | 2384 | |
659bfcd6 | 2385 | status = nfs4_do_setattr(inode, cred, fattr, sattr, state); |
65e4308d TM |
2386 | if (status == 0) |
2387 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
2388 | return status; |
2389 | } | |
2390 | ||
7c513058 BS |
2391 | static int _nfs4_proc_lookupfh(struct rpc_clnt *clnt, struct nfs_server *server, |
2392 | const struct nfs_fh *dirfh, const struct qstr *name, | |
2393 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
2b3de441 DH |
2394 | { |
2395 | int status; | |
2396 | struct nfs4_lookup_arg args = { | |
2397 | .bitmask = server->attr_bitmask, | |
2398 | .dir_fh = dirfh, | |
2399 | .name = name, | |
2400 | }; | |
2401 | struct nfs4_lookup_res res = { | |
2402 | .server = server, | |
2403 | .fattr = fattr, | |
2404 | .fh = fhandle, | |
2405 | }; | |
2406 | struct rpc_message msg = { | |
2407 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP], | |
2408 | .rpc_argp = &args, | |
2409 | .rpc_resp = &res, | |
2410 | }; | |
2411 | ||
2412 | nfs_fattr_init(fattr); | |
2413 | ||
2414 | dprintk("NFS call lookupfh %s\n", name->name); | |
7c513058 | 2415 | status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0); |
2b3de441 | 2416 | dprintk("NFS reply lookupfh: %d\n", status); |
2b3de441 DH |
2417 | return status; |
2418 | } | |
2419 | ||
2420 | static int nfs4_proc_lookupfh(struct nfs_server *server, struct nfs_fh *dirfh, | |
2421 | struct qstr *name, struct nfs_fh *fhandle, | |
2422 | struct nfs_fattr *fattr) | |
2423 | { | |
2424 | struct nfs4_exception exception = { }; | |
2425 | int err; | |
2426 | do { | |
7c513058 | 2427 | err = _nfs4_proc_lookupfh(server->client, server, dirfh, name, fhandle, fattr); |
4e56e082 TM |
2428 | /* FIXME: !!!! */ |
2429 | if (err == -NFS4ERR_MOVED) { | |
2430 | err = -EREMOTE; | |
2431 | break; | |
2432 | } | |
2433 | err = nfs4_handle_exception(server, err, &exception); | |
2b3de441 DH |
2434 | } while (exception.retry); |
2435 | return err; | |
2436 | } | |
2437 | ||
7c513058 BS |
2438 | static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, |
2439 | const struct qstr *name, struct nfs_fh *fhandle, | |
2440 | struct nfs_fattr *fattr) | |
1da177e4 | 2441 | { |
4e56e082 | 2442 | int status; |
1da177e4 LT |
2443 | |
2444 | dprintk("NFS call lookup %s\n", name->name); | |
7c513058 | 2445 | status = _nfs4_proc_lookupfh(clnt, NFS_SERVER(dir), NFS_FH(dir), name, fhandle, fattr); |
6b97fd3d MN |
2446 | if (status == -NFS4ERR_MOVED) |
2447 | status = nfs4_get_referral(dir, name, fattr, fhandle); | |
1da177e4 LT |
2448 | dprintk("NFS reply lookup: %d\n", status); |
2449 | return status; | |
2450 | } | |
2451 | ||
7ebb9315 BS |
2452 | void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr, struct nfs_fh *fh) |
2453 | { | |
2454 | memset(fh, 0, sizeof(struct nfs_fh)); | |
2455 | fattr->fsid.major = 1; | |
2456 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
2457 | NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_FSID | NFS_ATTR_FATTR_MOUNTPOINT; | |
2458 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; | |
2459 | fattr->nlink = 2; | |
2460 | } | |
2461 | ||
7c513058 BS |
2462 | static int nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, struct qstr *name, |
2463 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
1da177e4 LT |
2464 | { |
2465 | struct nfs4_exception exception = { }; | |
2466 | int err; | |
2467 | do { | |
2468 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
7c513058 | 2469 | _nfs4_proc_lookup(clnt, dir, name, fhandle, fattr), |
1da177e4 | 2470 | &exception); |
7ebb9315 BS |
2471 | if (err == -EPERM) |
2472 | nfs_fixup_secinfo_attributes(fattr, fhandle); | |
1da177e4 LT |
2473 | } while (exception.retry); |
2474 | return err; | |
2475 | } | |
2476 | ||
2477 | static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2478 | { | |
76b32999 | 2479 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2480 | struct nfs4_accessargs args = { |
2481 | .fh = NFS_FH(inode), | |
76b32999 TM |
2482 | .bitmask = server->attr_bitmask, |
2483 | }; | |
2484 | struct nfs4_accessres res = { | |
2485 | .server = server, | |
1da177e4 | 2486 | }; |
1da177e4 LT |
2487 | struct rpc_message msg = { |
2488 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS], | |
2489 | .rpc_argp = &args, | |
2490 | .rpc_resp = &res, | |
2491 | .rpc_cred = entry->cred, | |
2492 | }; | |
2493 | int mode = entry->mask; | |
2494 | int status; | |
2495 | ||
2496 | /* | |
2497 | * Determine which access bits we want to ask for... | |
2498 | */ | |
2499 | if (mode & MAY_READ) | |
2500 | args.access |= NFS4_ACCESS_READ; | |
2501 | if (S_ISDIR(inode->i_mode)) { | |
2502 | if (mode & MAY_WRITE) | |
2503 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE; | |
2504 | if (mode & MAY_EXEC) | |
2505 | args.access |= NFS4_ACCESS_LOOKUP; | |
2506 | } else { | |
2507 | if (mode & MAY_WRITE) | |
2508 | args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND; | |
2509 | if (mode & MAY_EXEC) | |
2510 | args.access |= NFS4_ACCESS_EXECUTE; | |
2511 | } | |
c407d41a TM |
2512 | |
2513 | res.fattr = nfs_alloc_fattr(); | |
2514 | if (res.fattr == NULL) | |
2515 | return -ENOMEM; | |
2516 | ||
7c513058 | 2517 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2518 | if (!status) { |
2519 | entry->mask = 0; | |
2520 | if (res.access & NFS4_ACCESS_READ) | |
2521 | entry->mask |= MAY_READ; | |
2522 | if (res.access & (NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE)) | |
2523 | entry->mask |= MAY_WRITE; | |
2524 | if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE)) | |
2525 | entry->mask |= MAY_EXEC; | |
c407d41a | 2526 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 | 2527 | } |
c407d41a | 2528 | nfs_free_fattr(res.fattr); |
1da177e4 LT |
2529 | return status; |
2530 | } | |
2531 | ||
2532 | static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
2533 | { | |
2534 | struct nfs4_exception exception = { }; | |
2535 | int err; | |
2536 | do { | |
2537 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2538 | _nfs4_proc_access(inode, entry), | |
2539 | &exception); | |
2540 | } while (exception.retry); | |
2541 | return err; | |
2542 | } | |
2543 | ||
2544 | /* | |
2545 | * TODO: For the time being, we don't try to get any attributes | |
2546 | * along with any of the zero-copy operations READ, READDIR, | |
2547 | * READLINK, WRITE. | |
2548 | * | |
2549 | * In the case of the first three, we want to put the GETATTR | |
2550 | * after the read-type operation -- this is because it is hard | |
2551 | * to predict the length of a GETATTR response in v4, and thus | |
2552 | * align the READ data correctly. This means that the GETATTR | |
2553 | * may end up partially falling into the page cache, and we should | |
2554 | * shift it into the 'tail' of the xdr_buf before processing. | |
2555 | * To do this efficiently, we need to know the total length | |
2556 | * of data received, which doesn't seem to be available outside | |
2557 | * of the RPC layer. | |
2558 | * | |
2559 | * In the case of WRITE, we also want to put the GETATTR after | |
2560 | * the operation -- in this case because we want to make sure | |
2561 | * we get the post-operation mtime and size. This means that | |
2562 | * we can't use xdr_encode_pages() as written: we need a variant | |
2563 | * of it which would leave room in the 'tail' iovec. | |
2564 | * | |
2565 | * Both of these changes to the XDR layer would in fact be quite | |
2566 | * minor, but I decided to leave them for a subsequent patch. | |
2567 | */ | |
2568 | static int _nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2569 | unsigned int pgbase, unsigned int pglen) | |
2570 | { | |
2571 | struct nfs4_readlink args = { | |
2572 | .fh = NFS_FH(inode), | |
2573 | .pgbase = pgbase, | |
2574 | .pglen = pglen, | |
2575 | .pages = &page, | |
2576 | }; | |
f50c7000 | 2577 | struct nfs4_readlink_res res; |
1da177e4 LT |
2578 | struct rpc_message msg = { |
2579 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK], | |
2580 | .rpc_argp = &args, | |
f50c7000 | 2581 | .rpc_resp = &res, |
1da177e4 LT |
2582 | }; |
2583 | ||
7c513058 | 2584 | return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
2585 | } |
2586 | ||
2587 | static int nfs4_proc_readlink(struct inode *inode, struct page *page, | |
2588 | unsigned int pgbase, unsigned int pglen) | |
2589 | { | |
2590 | struct nfs4_exception exception = { }; | |
2591 | int err; | |
2592 | do { | |
2593 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2594 | _nfs4_proc_readlink(inode, page, pgbase, pglen), | |
2595 | &exception); | |
2596 | } while (exception.retry); | |
2597 | return err; | |
2598 | } | |
2599 | ||
1da177e4 LT |
2600 | /* |
2601 | * Got race? | |
2602 | * We will need to arrange for the VFS layer to provide an atomic open. | |
2603 | * Until then, this create/open method is prone to inefficiency and race | |
2604 | * conditions due to the lookup, create, and open VFS calls from sys_open() | |
2605 | * placed on the wire. | |
2606 | * | |
2607 | * Given the above sorry state of affairs, I'm simply sending an OPEN. | |
2608 | * The file will be opened again in the subsequent VFS open call | |
2609 | * (nfs4_proc_file_open). | |
2610 | * | |
2611 | * The open for read will just hang around to be used by any process that | |
2612 | * opens the file O_RDONLY. This will all be resolved with the VFS changes. | |
2613 | */ | |
2614 | ||
2615 | static int | |
2616 | nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
c0204fd2 | 2617 | int flags, struct nfs_open_context *ctx) |
1da177e4 | 2618 | { |
c0204fd2 | 2619 | struct path my_path = { |
ad389da7 TM |
2620 | .dentry = dentry, |
2621 | }; | |
c0204fd2 | 2622 | struct path *path = &my_path; |
1da177e4 | 2623 | struct nfs4_state *state; |
c0204fd2 TM |
2624 | struct rpc_cred *cred = NULL; |
2625 | fmode_t fmode = 0; | |
1da177e4 LT |
2626 | int status = 0; |
2627 | ||
c0204fd2 TM |
2628 | if (ctx != NULL) { |
2629 | cred = ctx->cred; | |
2630 | path = &ctx->path; | |
2631 | fmode = ctx->mode; | |
1da177e4 | 2632 | } |
a8a5da99 | 2633 | sattr->ia_mode &= ~current_umask(); |
c0204fd2 | 2634 | state = nfs4_do_open(dir, path, fmode, flags, sattr, cred); |
d4d9cdcb | 2635 | d_drop(dentry); |
1da177e4 LT |
2636 | if (IS_ERR(state)) { |
2637 | status = PTR_ERR(state); | |
c0204fd2 | 2638 | goto out; |
1da177e4 | 2639 | } |
d4d9cdcb | 2640 | d_add(dentry, igrab(state->inode)); |
d75340cc | 2641 | nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); |
c0204fd2 TM |
2642 | if (ctx != NULL) |
2643 | ctx->state = state; | |
02a913a7 | 2644 | else |
c0204fd2 | 2645 | nfs4_close_sync(path, state, fmode); |
1da177e4 LT |
2646 | out: |
2647 | return status; | |
2648 | } | |
2649 | ||
2650 | static int _nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2651 | { | |
16e42959 | 2652 | struct nfs_server *server = NFS_SERVER(dir); |
4fdc17b2 | 2653 | struct nfs_removeargs args = { |
1da177e4 | 2654 | .fh = NFS_FH(dir), |
4fdc17b2 TM |
2655 | .name.len = name->len, |
2656 | .name.name = name->name, | |
16e42959 TM |
2657 | .bitmask = server->attr_bitmask, |
2658 | }; | |
4fdc17b2 | 2659 | struct nfs_removeres res = { |
16e42959 | 2660 | .server = server, |
1da177e4 | 2661 | }; |
1da177e4 | 2662 | struct rpc_message msg = { |
4fdc17b2 TM |
2663 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE], |
2664 | .rpc_argp = &args, | |
2665 | .rpc_resp = &res, | |
1da177e4 | 2666 | }; |
d346890b TM |
2667 | int status = -ENOMEM; |
2668 | ||
2669 | res.dir_attr = nfs_alloc_fattr(); | |
2670 | if (res.dir_attr == NULL) | |
2671 | goto out; | |
1da177e4 | 2672 | |
7c513058 | 2673 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); |
16e42959 TM |
2674 | if (status == 0) { |
2675 | update_changeattr(dir, &res.cinfo); | |
d346890b | 2676 | nfs_post_op_update_inode(dir, res.dir_attr); |
16e42959 | 2677 | } |
d346890b TM |
2678 | nfs_free_fattr(res.dir_attr); |
2679 | out: | |
1da177e4 LT |
2680 | return status; |
2681 | } | |
2682 | ||
2683 | static int nfs4_proc_remove(struct inode *dir, struct qstr *name) | |
2684 | { | |
2685 | struct nfs4_exception exception = { }; | |
2686 | int err; | |
2687 | do { | |
2688 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2689 | _nfs4_proc_remove(dir, name), | |
2690 | &exception); | |
2691 | } while (exception.retry); | |
2692 | return err; | |
2693 | } | |
2694 | ||
e4eff1a6 | 2695 | static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) |
1da177e4 | 2696 | { |
e4eff1a6 TM |
2697 | struct nfs_server *server = NFS_SERVER(dir); |
2698 | struct nfs_removeargs *args = msg->rpc_argp; | |
2699 | struct nfs_removeres *res = msg->rpc_resp; | |
1da177e4 | 2700 | |
a65318bf | 2701 | args->bitmask = server->cache_consistency_bitmask; |
e4eff1a6 | 2702 | res->server = server; |
dfb4f309 | 2703 | res->seq_res.sr_slot = NULL; |
1da177e4 | 2704 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; |
1da177e4 LT |
2705 | } |
2706 | ||
e4eff1a6 | 2707 | static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 2708 | { |
e4eff1a6 TM |
2709 | struct nfs_removeres *res = task->tk_msg.rpc_resp; |
2710 | ||
14516c3a TM |
2711 | if (!nfs4_sequence_done(task, &res->seq_res)) |
2712 | return 0; | |
9e33bed5 | 2713 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) |
e4eff1a6 TM |
2714 | return 0; |
2715 | update_changeattr(dir, &res->cinfo); | |
d346890b | 2716 | nfs_post_op_update_inode(dir, res->dir_attr); |
e4eff1a6 | 2717 | return 1; |
1da177e4 LT |
2718 | } |
2719 | ||
d3d4152a JL |
2720 | static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) |
2721 | { | |
2722 | struct nfs_server *server = NFS_SERVER(dir); | |
2723 | struct nfs_renameargs *arg = msg->rpc_argp; | |
2724 | struct nfs_renameres *res = msg->rpc_resp; | |
2725 | ||
2726 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; | |
2727 | arg->bitmask = server->attr_bitmask; | |
2728 | res->server = server; | |
2729 | } | |
2730 | ||
2731 | static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
2732 | struct inode *new_dir) | |
2733 | { | |
2734 | struct nfs_renameres *res = task->tk_msg.rpc_resp; | |
2735 | ||
2736 | if (!nfs4_sequence_done(task, &res->seq_res)) | |
2737 | return 0; | |
2738 | if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) | |
2739 | return 0; | |
2740 | ||
2741 | update_changeattr(old_dir, &res->old_cinfo); | |
2742 | nfs_post_op_update_inode(old_dir, res->old_fattr); | |
2743 | update_changeattr(new_dir, &res->new_cinfo); | |
2744 | nfs_post_op_update_inode(new_dir, res->new_fattr); | |
2745 | return 1; | |
2746 | } | |
2747 | ||
1da177e4 LT |
2748 | static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, |
2749 | struct inode *new_dir, struct qstr *new_name) | |
2750 | { | |
6caf2c82 | 2751 | struct nfs_server *server = NFS_SERVER(old_dir); |
920769f0 | 2752 | struct nfs_renameargs arg = { |
1da177e4 LT |
2753 | .old_dir = NFS_FH(old_dir), |
2754 | .new_dir = NFS_FH(new_dir), | |
2755 | .old_name = old_name, | |
2756 | .new_name = new_name, | |
6caf2c82 TM |
2757 | .bitmask = server->attr_bitmask, |
2758 | }; | |
e8582a8b | 2759 | struct nfs_renameres res = { |
6caf2c82 | 2760 | .server = server, |
1da177e4 | 2761 | }; |
1da177e4 LT |
2762 | struct rpc_message msg = { |
2763 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME], | |
2764 | .rpc_argp = &arg, | |
2765 | .rpc_resp = &res, | |
2766 | }; | |
011fff72 | 2767 | int status = -ENOMEM; |
1da177e4 | 2768 | |
011fff72 TM |
2769 | res.old_fattr = nfs_alloc_fattr(); |
2770 | res.new_fattr = nfs_alloc_fattr(); | |
2771 | if (res.old_fattr == NULL || res.new_fattr == NULL) | |
2772 | goto out; | |
1da177e4 | 2773 | |
7c513058 | 2774 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
1da177e4 LT |
2775 | if (!status) { |
2776 | update_changeattr(old_dir, &res.old_cinfo); | |
6caf2c82 | 2777 | nfs_post_op_update_inode(old_dir, res.old_fattr); |
1da177e4 | 2778 | update_changeattr(new_dir, &res.new_cinfo); |
6caf2c82 | 2779 | nfs_post_op_update_inode(new_dir, res.new_fattr); |
1da177e4 | 2780 | } |
011fff72 TM |
2781 | out: |
2782 | nfs_free_fattr(res.new_fattr); | |
2783 | nfs_free_fattr(res.old_fattr); | |
1da177e4 LT |
2784 | return status; |
2785 | } | |
2786 | ||
2787 | static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
2788 | struct inode *new_dir, struct qstr *new_name) | |
2789 | { | |
2790 | struct nfs4_exception exception = { }; | |
2791 | int err; | |
2792 | do { | |
2793 | err = nfs4_handle_exception(NFS_SERVER(old_dir), | |
2794 | _nfs4_proc_rename(old_dir, old_name, | |
2795 | new_dir, new_name), | |
2796 | &exception); | |
2797 | } while (exception.retry); | |
2798 | return err; | |
2799 | } | |
2800 | ||
2801 | static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2802 | { | |
91ba2eee | 2803 | struct nfs_server *server = NFS_SERVER(inode); |
1da177e4 LT |
2804 | struct nfs4_link_arg arg = { |
2805 | .fh = NFS_FH(inode), | |
2806 | .dir_fh = NFS_FH(dir), | |
2807 | .name = name, | |
91ba2eee TM |
2808 | .bitmask = server->attr_bitmask, |
2809 | }; | |
91ba2eee TM |
2810 | struct nfs4_link_res res = { |
2811 | .server = server, | |
1da177e4 | 2812 | }; |
1da177e4 LT |
2813 | struct rpc_message msg = { |
2814 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK], | |
2815 | .rpc_argp = &arg, | |
91ba2eee | 2816 | .rpc_resp = &res, |
1da177e4 | 2817 | }; |
136f2627 TM |
2818 | int status = -ENOMEM; |
2819 | ||
2820 | res.fattr = nfs_alloc_fattr(); | |
2821 | res.dir_attr = nfs_alloc_fattr(); | |
2822 | if (res.fattr == NULL || res.dir_attr == NULL) | |
2823 | goto out; | |
1da177e4 | 2824 | |
7c513058 | 2825 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
91ba2eee TM |
2826 | if (!status) { |
2827 | update_changeattr(dir, &res.cinfo); | |
2828 | nfs_post_op_update_inode(dir, res.dir_attr); | |
73a3d07c | 2829 | nfs_post_op_update_inode(inode, res.fattr); |
91ba2eee | 2830 | } |
136f2627 TM |
2831 | out: |
2832 | nfs_free_fattr(res.dir_attr); | |
2833 | nfs_free_fattr(res.fattr); | |
1da177e4 LT |
2834 | return status; |
2835 | } | |
2836 | ||
2837 | static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
2838 | { | |
2839 | struct nfs4_exception exception = { }; | |
2840 | int err; | |
2841 | do { | |
2842 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
2843 | _nfs4_proc_link(inode, dir, name), | |
2844 | &exception); | |
2845 | } while (exception.retry); | |
2846 | return err; | |
2847 | } | |
2848 | ||
57dc9a57 TM |
2849 | struct nfs4_createdata { |
2850 | struct rpc_message msg; | |
2851 | struct nfs4_create_arg arg; | |
2852 | struct nfs4_create_res res; | |
2853 | struct nfs_fh fh; | |
2854 | struct nfs_fattr fattr; | |
2855 | struct nfs_fattr dir_fattr; | |
2856 | }; | |
2857 | ||
2858 | static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir, | |
2859 | struct qstr *name, struct iattr *sattr, u32 ftype) | |
2860 | { | |
2861 | struct nfs4_createdata *data; | |
2862 | ||
2863 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
2864 | if (data != NULL) { | |
2865 | struct nfs_server *server = NFS_SERVER(dir); | |
2866 | ||
2867 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE]; | |
2868 | data->msg.rpc_argp = &data->arg; | |
2869 | data->msg.rpc_resp = &data->res; | |
2870 | data->arg.dir_fh = NFS_FH(dir); | |
2871 | data->arg.server = server; | |
2872 | data->arg.name = name; | |
2873 | data->arg.attrs = sattr; | |
2874 | data->arg.ftype = ftype; | |
2875 | data->arg.bitmask = server->attr_bitmask; | |
2876 | data->res.server = server; | |
2877 | data->res.fh = &data->fh; | |
2878 | data->res.fattr = &data->fattr; | |
2879 | data->res.dir_fattr = &data->dir_fattr; | |
2880 | nfs_fattr_init(data->res.fattr); | |
2881 | nfs_fattr_init(data->res.dir_fattr); | |
2882 | } | |
2883 | return data; | |
2884 | } | |
2885 | ||
2886 | static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data) | |
2887 | { | |
7c513058 | 2888 | int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg, |
e73b83f2 | 2889 | &data->arg.seq_args, &data->res.seq_res, 1); |
57dc9a57 TM |
2890 | if (status == 0) { |
2891 | update_changeattr(dir, &data->res.dir_cinfo); | |
2892 | nfs_post_op_update_inode(dir, data->res.dir_fattr); | |
2893 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); | |
2894 | } | |
2895 | return status; | |
2896 | } | |
2897 | ||
2898 | static void nfs4_free_createdata(struct nfs4_createdata *data) | |
2899 | { | |
2900 | kfree(data); | |
2901 | } | |
2902 | ||
4f390c15 | 2903 | static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2904 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 | 2905 | { |
57dc9a57 TM |
2906 | struct nfs4_createdata *data; |
2907 | int status = -ENAMETOOLONG; | |
1da177e4 | 2908 | |
94a6d753 | 2909 | if (len > NFS4_MAXPATHLEN) |
57dc9a57 | 2910 | goto out; |
4f390c15 | 2911 | |
57dc9a57 TM |
2912 | status = -ENOMEM; |
2913 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK); | |
2914 | if (data == NULL) | |
2915 | goto out; | |
2916 | ||
2917 | data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK]; | |
2918 | data->arg.u.symlink.pages = &page; | |
2919 | data->arg.u.symlink.len = len; | |
1da177e4 | 2920 | |
57dc9a57 TM |
2921 | status = nfs4_do_create(dir, dentry, data); |
2922 | ||
2923 | nfs4_free_createdata(data); | |
2924 | out: | |
1da177e4 LT |
2925 | return status; |
2926 | } | |
2927 | ||
4f390c15 | 2928 | static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry, |
94a6d753 | 2929 | struct page *page, unsigned int len, struct iattr *sattr) |
1da177e4 LT |
2930 | { |
2931 | struct nfs4_exception exception = { }; | |
2932 | int err; | |
2933 | do { | |
2934 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
94a6d753 CL |
2935 | _nfs4_proc_symlink(dir, dentry, page, |
2936 | len, sattr), | |
1da177e4 LT |
2937 | &exception); |
2938 | } while (exception.retry); | |
2939 | return err; | |
2940 | } | |
2941 | ||
2942 | static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2943 | struct iattr *sattr) | |
2944 | { | |
57dc9a57 TM |
2945 | struct nfs4_createdata *data; |
2946 | int status = -ENOMEM; | |
1da177e4 | 2947 | |
57dc9a57 TM |
2948 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR); |
2949 | if (data == NULL) | |
2950 | goto out; | |
2951 | ||
2952 | status = nfs4_do_create(dir, dentry, data); | |
2953 | ||
2954 | nfs4_free_createdata(data); | |
2955 | out: | |
1da177e4 LT |
2956 | return status; |
2957 | } | |
2958 | ||
2959 | static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry, | |
2960 | struct iattr *sattr) | |
2961 | { | |
2962 | struct nfs4_exception exception = { }; | |
2963 | int err; | |
a8a5da99 AK |
2964 | |
2965 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
2966 | do { |
2967 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
2968 | _nfs4_proc_mkdir(dir, dentry, sattr), | |
2969 | &exception); | |
2970 | } while (exception.retry); | |
2971 | return err; | |
2972 | } | |
2973 | ||
2974 | static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 2975 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
2976 | { |
2977 | struct inode *dir = dentry->d_inode; | |
2978 | struct nfs4_readdir_arg args = { | |
2979 | .fh = NFS_FH(dir), | |
56e4ebf8 | 2980 | .pages = pages, |
1da177e4 LT |
2981 | .pgbase = 0, |
2982 | .count = count, | |
96d25e53 | 2983 | .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask, |
82f2e547 | 2984 | .plus = plus, |
1da177e4 LT |
2985 | }; |
2986 | struct nfs4_readdir_res res; | |
2987 | struct rpc_message msg = { | |
2988 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR], | |
2989 | .rpc_argp = &args, | |
2990 | .rpc_resp = &res, | |
2991 | .rpc_cred = cred, | |
2992 | }; | |
2993 | int status; | |
2994 | ||
3110ff80 | 2995 | dprintk("%s: dentry = %s/%s, cookie = %Lu\n", __func__, |
eadf4598 TM |
2996 | dentry->d_parent->d_name.name, |
2997 | dentry->d_name.name, | |
2998 | (unsigned long long)cookie); | |
1da177e4 LT |
2999 | nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args); |
3000 | res.pgbase = args.pgbase; | |
7c513058 | 3001 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); |
ac396128 | 3002 | if (status >= 0) { |
1da177e4 | 3003 | memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE); |
ac396128 TM |
3004 | status += args.pgbase; |
3005 | } | |
c4812998 TM |
3006 | |
3007 | nfs_invalidate_atime(dir); | |
3008 | ||
3110ff80 | 3009 | dprintk("%s: returns %d\n", __func__, status); |
1da177e4 LT |
3010 | return status; |
3011 | } | |
3012 | ||
3013 | static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 3014 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
3015 | { |
3016 | struct nfs4_exception exception = { }; | |
3017 | int err; | |
3018 | do { | |
3019 | err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), | |
3020 | _nfs4_proc_readdir(dentry, cred, cookie, | |
56e4ebf8 | 3021 | pages, count, plus), |
1da177e4 LT |
3022 | &exception); |
3023 | } while (exception.retry); | |
3024 | return err; | |
3025 | } | |
3026 | ||
3027 | static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3028 | struct iattr *sattr, dev_t rdev) | |
3029 | { | |
57dc9a57 TM |
3030 | struct nfs4_createdata *data; |
3031 | int mode = sattr->ia_mode; | |
3032 | int status = -ENOMEM; | |
1da177e4 LT |
3033 | |
3034 | BUG_ON(!(sattr->ia_valid & ATTR_MODE)); | |
3035 | BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode)); | |
57dc9a57 TM |
3036 | |
3037 | data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK); | |
3038 | if (data == NULL) | |
3039 | goto out; | |
3040 | ||
1da177e4 | 3041 | if (S_ISFIFO(mode)) |
57dc9a57 | 3042 | data->arg.ftype = NF4FIFO; |
1da177e4 | 3043 | else if (S_ISBLK(mode)) { |
57dc9a57 TM |
3044 | data->arg.ftype = NF4BLK; |
3045 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3046 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 LT |
3047 | } |
3048 | else if (S_ISCHR(mode)) { | |
57dc9a57 TM |
3049 | data->arg.ftype = NF4CHR; |
3050 | data->arg.u.device.specdata1 = MAJOR(rdev); | |
3051 | data->arg.u.device.specdata2 = MINOR(rdev); | |
1da177e4 | 3052 | } |
1da177e4 | 3053 | |
57dc9a57 TM |
3054 | status = nfs4_do_create(dir, dentry, data); |
3055 | ||
3056 | nfs4_free_createdata(data); | |
3057 | out: | |
1da177e4 LT |
3058 | return status; |
3059 | } | |
3060 | ||
3061 | static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry, | |
3062 | struct iattr *sattr, dev_t rdev) | |
3063 | { | |
3064 | struct nfs4_exception exception = { }; | |
3065 | int err; | |
a8a5da99 AK |
3066 | |
3067 | sattr->ia_mode &= ~current_umask(); | |
1da177e4 LT |
3068 | do { |
3069 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
3070 | _nfs4_proc_mknod(dir, dentry, sattr, rdev), | |
3071 | &exception); | |
3072 | } while (exception.retry); | |
3073 | return err; | |
3074 | } | |
3075 | ||
3076 | static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
3077 | struct nfs_fsstat *fsstat) | |
3078 | { | |
3079 | struct nfs4_statfs_arg args = { | |
3080 | .fh = fhandle, | |
3081 | .bitmask = server->attr_bitmask, | |
3082 | }; | |
24ad148a BH |
3083 | struct nfs4_statfs_res res = { |
3084 | .fsstat = fsstat, | |
3085 | }; | |
1da177e4 LT |
3086 | struct rpc_message msg = { |
3087 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS], | |
3088 | .rpc_argp = &args, | |
24ad148a | 3089 | .rpc_resp = &res, |
1da177e4 LT |
3090 | }; |
3091 | ||
0e574af1 | 3092 | nfs_fattr_init(fsstat->fattr); |
7c513058 | 3093 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3094 | } |
3095 | ||
3096 | static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat) | |
3097 | { | |
3098 | struct nfs4_exception exception = { }; | |
3099 | int err; | |
3100 | do { | |
3101 | err = nfs4_handle_exception(server, | |
3102 | _nfs4_proc_statfs(server, fhandle, fsstat), | |
3103 | &exception); | |
3104 | } while (exception.retry); | |
3105 | return err; | |
3106 | } | |
3107 | ||
3108 | static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
3109 | struct nfs_fsinfo *fsinfo) | |
3110 | { | |
3111 | struct nfs4_fsinfo_arg args = { | |
3112 | .fh = fhandle, | |
3113 | .bitmask = server->attr_bitmask, | |
3114 | }; | |
3dda5e43 BH |
3115 | struct nfs4_fsinfo_res res = { |
3116 | .fsinfo = fsinfo, | |
3117 | }; | |
1da177e4 LT |
3118 | struct rpc_message msg = { |
3119 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO], | |
3120 | .rpc_argp = &args, | |
3dda5e43 | 3121 | .rpc_resp = &res, |
1da177e4 LT |
3122 | }; |
3123 | ||
7c513058 | 3124 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3125 | } |
3126 | ||
3127 | static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3128 | { | |
3129 | struct nfs4_exception exception = { }; | |
3130 | int err; | |
3131 | ||
3132 | do { | |
3133 | err = nfs4_handle_exception(server, | |
3134 | _nfs4_do_fsinfo(server, fhandle, fsinfo), | |
3135 | &exception); | |
3136 | } while (exception.retry); | |
3137 | return err; | |
3138 | } | |
3139 | ||
3140 | static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo) | |
3141 | { | |
0e574af1 | 3142 | nfs_fattr_init(fsinfo->fattr); |
1da177e4 LT |
3143 | return nfs4_do_fsinfo(server, fhandle, fsinfo); |
3144 | } | |
3145 | ||
3146 | static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3147 | struct nfs_pathconf *pathconf) | |
3148 | { | |
3149 | struct nfs4_pathconf_arg args = { | |
3150 | .fh = fhandle, | |
3151 | .bitmask = server->attr_bitmask, | |
3152 | }; | |
d45b2989 BH |
3153 | struct nfs4_pathconf_res res = { |
3154 | .pathconf = pathconf, | |
3155 | }; | |
1da177e4 LT |
3156 | struct rpc_message msg = { |
3157 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF], | |
3158 | .rpc_argp = &args, | |
d45b2989 | 3159 | .rpc_resp = &res, |
1da177e4 LT |
3160 | }; |
3161 | ||
3162 | /* None of the pathconf attributes are mandatory to implement */ | |
3163 | if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) { | |
3164 | memset(pathconf, 0, sizeof(*pathconf)); | |
3165 | return 0; | |
3166 | } | |
3167 | ||
0e574af1 | 3168 | nfs_fattr_init(pathconf->fattr); |
7c513058 | 3169 | return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
1da177e4 LT |
3170 | } |
3171 | ||
3172 | static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
3173 | struct nfs_pathconf *pathconf) | |
3174 | { | |
3175 | struct nfs4_exception exception = { }; | |
3176 | int err; | |
3177 | ||
3178 | do { | |
3179 | err = nfs4_handle_exception(server, | |
3180 | _nfs4_proc_pathconf(server, fhandle, pathconf), | |
3181 | &exception); | |
3182 | } while (exception.retry); | |
3183 | return err; | |
3184 | } | |
3185 | ||
d20581aa BH |
3186 | void __nfs4_read_done_cb(struct nfs_read_data *data) |
3187 | { | |
3188 | nfs_invalidate_atime(data->inode); | |
3189 | } | |
3190 | ||
cbdabc7f | 3191 | static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 3192 | { |
ec06c096 | 3193 | struct nfs_server *server = NFS_SERVER(data->inode); |
1da177e4 | 3194 | |
9e33bed5 | 3195 | if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) { |
0110ee15 | 3196 | nfs_restart_rpc(task, server->nfs_client); |
ec06c096 | 3197 | return -EAGAIN; |
1da177e4 | 3198 | } |
8850df99 | 3199 | |
d20581aa | 3200 | __nfs4_read_done_cb(data); |
1da177e4 | 3201 | if (task->tk_status > 0) |
ec06c096 TM |
3202 | renew_lease(server, data->timestamp); |
3203 | return 0; | |
1da177e4 LT |
3204 | } |
3205 | ||
cbdabc7f AA |
3206 | static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data) |
3207 | { | |
3208 | ||
3209 | dprintk("--> %s\n", __func__); | |
3210 | ||
3211 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3212 | return -EAGAIN; | |
3213 | ||
d20581aa BH |
3214 | return data->read_done_cb ? data->read_done_cb(task, data) : |
3215 | nfs4_read_done_cb(task, data); | |
cbdabc7f AA |
3216 | } |
3217 | ||
bdc7f021 | 3218 | static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 3219 | { |
1da177e4 | 3220 | data->timestamp = jiffies; |
cbdabc7f | 3221 | data->read_done_cb = nfs4_read_done_cb; |
bdc7f021 | 3222 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ]; |
1da177e4 LT |
3223 | } |
3224 | ||
cbdabc7f AA |
3225 | /* Reset the the nfs_read_data to send the read to the MDS. */ |
3226 | void nfs4_reset_read(struct rpc_task *task, struct nfs_read_data *data) | |
3227 | { | |
3228 | dprintk("%s Reset task for i/o through\n", __func__); | |
3229 | put_lseg(data->lseg); | |
3230 | data->lseg = NULL; | |
3231 | /* offsets will differ in the dense stripe case */ | |
3232 | data->args.offset = data->mds_offset; | |
3233 | data->ds_clp = NULL; | |
3234 | data->args.fh = NFS_FH(data->inode); | |
3235 | data->read_done_cb = nfs4_read_done_cb; | |
3236 | task->tk_ops = data->mds_ops; | |
3237 | rpc_task_reset_client(task, NFS_CLIENT(data->inode)); | |
3238 | } | |
3239 | EXPORT_SYMBOL_GPL(nfs4_reset_read); | |
3240 | ||
b029bc9b | 3241 | static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3242 | { |
1da177e4 LT |
3243 | struct inode *inode = data->inode; |
3244 | ||
9e33bed5 | 3245 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) { |
0110ee15 | 3246 | nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client); |
788e7a89 | 3247 | return -EAGAIN; |
1da177e4 | 3248 | } |
4f9838c7 | 3249 | if (task->tk_status >= 0) { |
1da177e4 | 3250 | renew_lease(NFS_SERVER(inode), data->timestamp); |
70ca8852 | 3251 | nfs_post_op_update_inode_force_wcc(inode, data->res.fattr); |
4f9838c7 | 3252 | } |
788e7a89 | 3253 | return 0; |
1da177e4 LT |
3254 | } |
3255 | ||
b029bc9b FI |
3256 | static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data) |
3257 | { | |
3258 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3259 | return -EAGAIN; | |
d20581aa BH |
3260 | return data->write_done_cb ? data->write_done_cb(task, data) : |
3261 | nfs4_write_done_cb(task, data); | |
b029bc9b FI |
3262 | } |
3263 | ||
a69aef14 FI |
3264 | /* Reset the the nfs_write_data to send the write to the MDS. */ |
3265 | void nfs4_reset_write(struct rpc_task *task, struct nfs_write_data *data) | |
3266 | { | |
3267 | dprintk("%s Reset task for i/o through\n", __func__); | |
3268 | put_lseg(data->lseg); | |
3269 | data->lseg = NULL; | |
3270 | data->ds_clp = NULL; | |
3271 | data->write_done_cb = nfs4_write_done_cb; | |
3272 | data->args.fh = NFS_FH(data->inode); | |
3273 | data->args.bitmask = data->res.server->cache_consistency_bitmask; | |
3274 | data->args.offset = data->mds_offset; | |
3275 | data->res.fattr = &data->fattr; | |
3276 | task->tk_ops = data->mds_ops; | |
3277 | rpc_task_reset_client(task, NFS_CLIENT(data->inode)); | |
3278 | } | |
3279 | EXPORT_SYMBOL_GPL(nfs4_reset_write); | |
3280 | ||
bdc7f021 | 3281 | static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3282 | { |
bdc7f021 TM |
3283 | struct nfs_server *server = NFS_SERVER(data->inode); |
3284 | ||
7ffd1064 FI |
3285 | if (data->lseg) { |
3286 | data->args.bitmask = NULL; | |
3287 | data->res.fattr = NULL; | |
3288 | } else | |
3289 | data->args.bitmask = server->cache_consistency_bitmask; | |
b029bc9b FI |
3290 | if (!data->write_done_cb) |
3291 | data->write_done_cb = nfs4_write_done_cb; | |
4f9838c7 | 3292 | data->res.server = server; |
1da177e4 LT |
3293 | data->timestamp = jiffies; |
3294 | ||
bdc7f021 | 3295 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE]; |
1da177e4 LT |
3296 | } |
3297 | ||
5f452431 | 3298 | static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 3299 | { |
1da177e4 | 3300 | struct inode *inode = data->inode; |
14516c3a | 3301 | |
9e33bed5 | 3302 | if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { |
0110ee15 | 3303 | nfs_restart_rpc(task, NFS_SERVER(inode)->nfs_client); |
788e7a89 | 3304 | return -EAGAIN; |
1da177e4 | 3305 | } |
9e08a3c5 | 3306 | nfs_refresh_inode(inode, data->res.fattr); |
788e7a89 | 3307 | return 0; |
1da177e4 LT |
3308 | } |
3309 | ||
5f452431 FI |
3310 | static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
3311 | { | |
3312 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
3313 | return -EAGAIN; | |
3314 | return data->write_done_cb(task, data); | |
3315 | } | |
3316 | ||
bdc7f021 | 3317 | static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 3318 | { |
788e7a89 | 3319 | struct nfs_server *server = NFS_SERVER(data->inode); |
988b6dce FI |
3320 | |
3321 | if (data->lseg) { | |
3322 | data->args.bitmask = NULL; | |
3323 | data->res.fattr = NULL; | |
3324 | } else | |
3325 | data->args.bitmask = server->cache_consistency_bitmask; | |
5f452431 FI |
3326 | if (!data->write_done_cb) |
3327 | data->write_done_cb = nfs4_commit_done_cb; | |
4f9838c7 | 3328 | data->res.server = server; |
bdc7f021 | 3329 | msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT]; |
1da177e4 LT |
3330 | } |
3331 | ||
9bc4e3ca CL |
3332 | struct nfs4_renewdata { |
3333 | struct nfs_client *client; | |
3334 | unsigned long timestamp; | |
3335 | }; | |
3336 | ||
1da177e4 LT |
3337 | /* |
3338 | * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special | |
3339 | * standalone procedure for queueing an asynchronous RENEW. | |
3340 | */ | |
9bc4e3ca | 3341 | static void nfs4_renew_release(void *calldata) |
dc96aef9 | 3342 | { |
9bc4e3ca CL |
3343 | struct nfs4_renewdata *data = calldata; |
3344 | struct nfs_client *clp = data->client; | |
dc96aef9 | 3345 | |
0851de06 AB |
3346 | if (atomic_read(&clp->cl_count) > 1) |
3347 | nfs4_schedule_state_renewal(clp); | |
3348 | nfs_put_client(clp); | |
9bc4e3ca | 3349 | kfree(data); |
dc96aef9 AB |
3350 | } |
3351 | ||
9bc4e3ca | 3352 | static void nfs4_renew_done(struct rpc_task *task, void *calldata) |
1da177e4 | 3353 | { |
9bc4e3ca CL |
3354 | struct nfs4_renewdata *data = calldata; |
3355 | struct nfs_client *clp = data->client; | |
3356 | unsigned long timestamp = data->timestamp; | |
1da177e4 LT |
3357 | |
3358 | if (task->tk_status < 0) { | |
95baa25c TM |
3359 | /* Unless we're shutting down, schedule state recovery! */ |
3360 | if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) != 0) | |
0400a6b0 | 3361 | nfs4_schedule_lease_recovery(clp); |
1da177e4 LT |
3362 | return; |
3363 | } | |
452e9352 | 3364 | do_renew_lease(clp, timestamp); |
1da177e4 LT |
3365 | } |
3366 | ||
963d8fe5 TM |
3367 | static const struct rpc_call_ops nfs4_renew_ops = { |
3368 | .rpc_call_done = nfs4_renew_done, | |
dc96aef9 | 3369 | .rpc_release = nfs4_renew_release, |
963d8fe5 TM |
3370 | }; |
3371 | ||
adfa6f98 | 3372 | int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3373 | { |
3374 | struct rpc_message msg = { | |
3375 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3376 | .rpc_argp = clp, | |
b4454fe1 | 3377 | .rpc_cred = cred, |
1da177e4 | 3378 | }; |
9bc4e3ca | 3379 | struct nfs4_renewdata *data; |
1da177e4 | 3380 | |
0851de06 AB |
3381 | if (!atomic_inc_not_zero(&clp->cl_count)) |
3382 | return -EIO; | |
9bc4e3ca CL |
3383 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
3384 | if (data == NULL) | |
3385 | return -ENOMEM; | |
3386 | data->client = clp; | |
3387 | data->timestamp = jiffies; | |
1da177e4 | 3388 | return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_SOFT, |
9bc4e3ca | 3389 | &nfs4_renew_ops, data); |
1da177e4 LT |
3390 | } |
3391 | ||
adfa6f98 | 3392 | int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred) |
1da177e4 LT |
3393 | { |
3394 | struct rpc_message msg = { | |
3395 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW], | |
3396 | .rpc_argp = clp, | |
b4454fe1 | 3397 | .rpc_cred = cred, |
1da177e4 LT |
3398 | }; |
3399 | unsigned long now = jiffies; | |
3400 | int status; | |
3401 | ||
3402 | status = rpc_call_sync(clp->cl_rpcclient, &msg, 0); | |
3403 | if (status < 0) | |
3404 | return status; | |
452e9352 | 3405 | do_renew_lease(clp, now); |
1da177e4 LT |
3406 | return 0; |
3407 | } | |
3408 | ||
aa1870af BF |
3409 | static inline int nfs4_server_supports_acls(struct nfs_server *server) |
3410 | { | |
3411 | return (server->caps & NFS_CAP_ACLS) | |
3412 | && (server->acl_bitmask & ACL4_SUPPORT_ALLOW_ACL) | |
3413 | && (server->acl_bitmask & ACL4_SUPPORT_DENY_ACL); | |
3414 | } | |
3415 | ||
3416 | /* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_CACHE_SIZE, and that | |
3417 | * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_CACHE_SIZE) bytes on | |
3418 | * the stack. | |
3419 | */ | |
3420 | #define NFS4ACL_MAXPAGES (XATTR_SIZE_MAX >> PAGE_CACHE_SHIFT) | |
3421 | ||
3422 | static void buf_to_pages(const void *buf, size_t buflen, | |
3423 | struct page **pages, unsigned int *pgbase) | |
3424 | { | |
3425 | const void *p = buf; | |
3426 | ||
3427 | *pgbase = offset_in_page(buf); | |
3428 | p -= *pgbase; | |
3429 | while (p < buf + buflen) { | |
3430 | *(pages++) = virt_to_page(p); | |
3431 | p += PAGE_CACHE_SIZE; | |
3432 | } | |
3433 | } | |
3434 | ||
e9e3d724 NH |
3435 | static int buf_to_pages_noslab(const void *buf, size_t buflen, |
3436 | struct page **pages, unsigned int *pgbase) | |
3437 | { | |
3438 | struct page *newpage, **spages; | |
3439 | int rc = 0; | |
3440 | size_t len; | |
3441 | spages = pages; | |
3442 | ||
3443 | do { | |
43b7c3f0 | 3444 | len = min_t(size_t, PAGE_CACHE_SIZE, buflen); |
e9e3d724 NH |
3445 | newpage = alloc_page(GFP_KERNEL); |
3446 | ||
3447 | if (newpage == NULL) | |
3448 | goto unwind; | |
3449 | memcpy(page_address(newpage), buf, len); | |
3450 | buf += len; | |
3451 | buflen -= len; | |
3452 | *pages++ = newpage; | |
3453 | rc++; | |
3454 | } while (buflen != 0); | |
3455 | ||
3456 | return rc; | |
3457 | ||
3458 | unwind: | |
3459 | for(; rc > 0; rc--) | |
3460 | __free_page(spages[rc-1]); | |
3461 | return -ENOMEM; | |
3462 | } | |
3463 | ||
e50a1c2e BF |
3464 | struct nfs4_cached_acl { |
3465 | int cached; | |
3466 | size_t len; | |
3e9d4154 | 3467 | char data[0]; |
e50a1c2e BF |
3468 | }; |
3469 | ||
3470 | static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl) | |
3471 | { | |
3472 | struct nfs_inode *nfsi = NFS_I(inode); | |
3473 | ||
3474 | spin_lock(&inode->i_lock); | |
3475 | kfree(nfsi->nfs4_acl); | |
3476 | nfsi->nfs4_acl = acl; | |
3477 | spin_unlock(&inode->i_lock); | |
3478 | } | |
3479 | ||
3480 | static void nfs4_zap_acl_attr(struct inode *inode) | |
3481 | { | |
3482 | nfs4_set_cached_acl(inode, NULL); | |
3483 | } | |
3484 | ||
3485 | static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen) | |
3486 | { | |
3487 | struct nfs_inode *nfsi = NFS_I(inode); | |
3488 | struct nfs4_cached_acl *acl; | |
3489 | int ret = -ENOENT; | |
3490 | ||
3491 | spin_lock(&inode->i_lock); | |
3492 | acl = nfsi->nfs4_acl; | |
3493 | if (acl == NULL) | |
3494 | goto out; | |
3495 | if (buf == NULL) /* user is just asking for length */ | |
3496 | goto out_len; | |
3497 | if (acl->cached == 0) | |
3498 | goto out; | |
3499 | ret = -ERANGE; /* see getxattr(2) man page */ | |
3500 | if (acl->len > buflen) | |
3501 | goto out; | |
3502 | memcpy(buf, acl->data, acl->len); | |
3503 | out_len: | |
3504 | ret = acl->len; | |
3505 | out: | |
3506 | spin_unlock(&inode->i_lock); | |
3507 | return ret; | |
3508 | } | |
3509 | ||
3510 | static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len) | |
3511 | { | |
3512 | struct nfs4_cached_acl *acl; | |
3513 | ||
3514 | if (buf && acl_len <= PAGE_SIZE) { | |
3515 | acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); | |
3516 | if (acl == NULL) | |
3517 | goto out; | |
3518 | acl->cached = 1; | |
3519 | memcpy(acl->data, buf, acl_len); | |
3520 | } else { | |
3521 | acl = kmalloc(sizeof(*acl), GFP_KERNEL); | |
3522 | if (acl == NULL) | |
3523 | goto out; | |
3524 | acl->cached = 0; | |
3525 | } | |
3526 | acl->len = acl_len; | |
3527 | out: | |
3528 | nfs4_set_cached_acl(inode, acl); | |
3529 | } | |
3530 | ||
16b4289c | 3531 | static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
aa1870af | 3532 | { |
aa1870af BF |
3533 | struct page *pages[NFS4ACL_MAXPAGES]; |
3534 | struct nfs_getaclargs args = { | |
3535 | .fh = NFS_FH(inode), | |
3536 | .acl_pages = pages, | |
3537 | .acl_len = buflen, | |
3538 | }; | |
663c79b3 BH |
3539 | struct nfs_getaclres res = { |
3540 | .acl_len = buflen, | |
3541 | }; | |
e50a1c2e | 3542 | void *resp_buf; |
aa1870af BF |
3543 | struct rpc_message msg = { |
3544 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], | |
3545 | .rpc_argp = &args, | |
663c79b3 | 3546 | .rpc_resp = &res, |
aa1870af | 3547 | }; |
e50a1c2e | 3548 | struct page *localpage = NULL; |
aa1870af BF |
3549 | int ret; |
3550 | ||
e50a1c2e BF |
3551 | if (buflen < PAGE_SIZE) { |
3552 | /* As long as we're doing a round trip to the server anyway, | |
3553 | * let's be prepared for a page of acl data. */ | |
3554 | localpage = alloc_page(GFP_KERNEL); | |
3555 | resp_buf = page_address(localpage); | |
3556 | if (localpage == NULL) | |
3557 | return -ENOMEM; | |
3558 | args.acl_pages[0] = localpage; | |
3559 | args.acl_pgbase = 0; | |
663c79b3 | 3560 | args.acl_len = PAGE_SIZE; |
e50a1c2e BF |
3561 | } else { |
3562 | resp_buf = buf; | |
3563 | buf_to_pages(buf, buflen, args.acl_pages, &args.acl_pgbase); | |
3564 | } | |
7c513058 | 3565 | ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0); |
e50a1c2e BF |
3566 | if (ret) |
3567 | goto out_free; | |
663c79b3 BH |
3568 | if (res.acl_len > args.acl_len) |
3569 | nfs4_write_cached_acl(inode, NULL, res.acl_len); | |
e50a1c2e | 3570 | else |
663c79b3 | 3571 | nfs4_write_cached_acl(inode, resp_buf, res.acl_len); |
e50a1c2e BF |
3572 | if (buf) { |
3573 | ret = -ERANGE; | |
663c79b3 | 3574 | if (res.acl_len > buflen) |
e50a1c2e BF |
3575 | goto out_free; |
3576 | if (localpage) | |
663c79b3 | 3577 | memcpy(buf, resp_buf, res.acl_len); |
e50a1c2e | 3578 | } |
663c79b3 | 3579 | ret = res.acl_len; |
e50a1c2e BF |
3580 | out_free: |
3581 | if (localpage) | |
3582 | __free_page(localpage); | |
aa1870af BF |
3583 | return ret; |
3584 | } | |
3585 | ||
16b4289c TM |
3586 | static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) |
3587 | { | |
3588 | struct nfs4_exception exception = { }; | |
3589 | ssize_t ret; | |
3590 | do { | |
3591 | ret = __nfs4_get_acl_uncached(inode, buf, buflen); | |
3592 | if (ret >= 0) | |
3593 | break; | |
3594 | ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception); | |
3595 | } while (exception.retry); | |
3596 | return ret; | |
3597 | } | |
3598 | ||
e50a1c2e BF |
3599 | static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen) |
3600 | { | |
3601 | struct nfs_server *server = NFS_SERVER(inode); | |
3602 | int ret; | |
3603 | ||
3604 | if (!nfs4_server_supports_acls(server)) | |
3605 | return -EOPNOTSUPP; | |
3606 | ret = nfs_revalidate_inode(server, inode); | |
3607 | if (ret < 0) | |
3608 | return ret; | |
08a22b39 AK |
3609 | if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) |
3610 | nfs_zap_acl_cache(inode); | |
e50a1c2e BF |
3611 | ret = nfs4_read_cached_acl(inode, buf, buflen); |
3612 | if (ret != -ENOENT) | |
3613 | return ret; | |
3614 | return nfs4_get_acl_uncached(inode, buf, buflen); | |
3615 | } | |
3616 | ||
16b4289c | 3617 | static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
4b580ee3 BF |
3618 | { |
3619 | struct nfs_server *server = NFS_SERVER(inode); | |
3620 | struct page *pages[NFS4ACL_MAXPAGES]; | |
3621 | struct nfs_setaclargs arg = { | |
3622 | .fh = NFS_FH(inode), | |
3623 | .acl_pages = pages, | |
3624 | .acl_len = buflen, | |
3625 | }; | |
73c403a9 | 3626 | struct nfs_setaclres res; |
4b580ee3 BF |
3627 | struct rpc_message msg = { |
3628 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL], | |
3629 | .rpc_argp = &arg, | |
73c403a9 | 3630 | .rpc_resp = &res, |
4b580ee3 | 3631 | }; |
e9e3d724 | 3632 | int ret, i; |
4b580ee3 BF |
3633 | |
3634 | if (!nfs4_server_supports_acls(server)) | |
3635 | return -EOPNOTSUPP; | |
e9e3d724 NH |
3636 | i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase); |
3637 | if (i < 0) | |
3638 | return i; | |
642ac549 | 3639 | nfs_inode_return_delegation(inode); |
7c513058 | 3640 | ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
e9e3d724 NH |
3641 | |
3642 | /* | |
3643 | * Free each page after tx, so the only ref left is | |
3644 | * held by the network stack | |
3645 | */ | |
3646 | for (; i > 0; i--) | |
3647 | put_page(pages[i-1]); | |
3648 | ||
08a22b39 AK |
3649 | /* |
3650 | * Acl update can result in inode attribute update. | |
3651 | * so mark the attribute cache invalid. | |
3652 | */ | |
3653 | spin_lock(&inode->i_lock); | |
3654 | NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; | |
3655 | spin_unlock(&inode->i_lock); | |
f41f7418 TM |
3656 | nfs_access_zap_cache(inode); |
3657 | nfs_zap_acl_cache(inode); | |
4b580ee3 BF |
3658 | return ret; |
3659 | } | |
3660 | ||
16b4289c TM |
3661 | static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen) |
3662 | { | |
3663 | struct nfs4_exception exception = { }; | |
3664 | int err; | |
3665 | do { | |
3666 | err = nfs4_handle_exception(NFS_SERVER(inode), | |
3667 | __nfs4_proc_set_acl(inode, buf, buflen), | |
3668 | &exception); | |
3669 | } while (exception.retry); | |
3670 | return err; | |
3671 | } | |
3672 | ||
1da177e4 | 3673 | static int |
aa5190d0 | 3674 | nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) |
1da177e4 | 3675 | { |
aa5190d0 TM |
3676 | struct nfs_client *clp = server->nfs_client; |
3677 | ||
3678 | if (task->tk_status >= 0) | |
1da177e4 LT |
3679 | return 0; |
3680 | switch(task->tk_status) { | |
9e33bed5 TM |
3681 | case -NFS4ERR_ADMIN_REVOKED: |
3682 | case -NFS4ERR_BAD_STATEID: | |
3683 | case -NFS4ERR_OPENMODE: | |
3684 | if (state == NULL) | |
3685 | break; | |
0400a6b0 TM |
3686 | nfs4_schedule_stateid_recovery(server, state); |
3687 | goto wait_on_recovery; | |
0ced63d1 TM |
3688 | case -NFS4ERR_EXPIRED: |
3689 | if (state != NULL) | |
3690 | nfs4_schedule_stateid_recovery(server, state); | |
1da177e4 | 3691 | case -NFS4ERR_STALE_STATEID: |
a2c0b9e2 | 3692 | case -NFS4ERR_STALE_CLIENTID: |
0400a6b0 TM |
3693 | nfs4_schedule_lease_recovery(clp); |
3694 | goto wait_on_recovery; | |
4745e315 AA |
3695 | #if defined(CONFIG_NFS_V4_1) |
3696 | case -NFS4ERR_BADSESSION: | |
3697 | case -NFS4ERR_BADSLOT: | |
3698 | case -NFS4ERR_BAD_HIGH_SLOT: | |
3699 | case -NFS4ERR_DEADSESSION: | |
3700 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
3701 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
3702 | case -NFS4ERR_SEQ_MISORDERED: | |
3703 | dprintk("%s ERROR %d, Reset session\n", __func__, | |
3704 | task->tk_status); | |
0400a6b0 | 3705 | nfs4_schedule_session_recovery(clp->cl_session); |
4745e315 AA |
3706 | task->tk_status = 0; |
3707 | return -EAGAIN; | |
3708 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 3709 | case -NFS4ERR_DELAY: |
aa5190d0 | 3710 | nfs_inc_server_stats(server, NFSIOS_DELAY); |
006ea73e | 3711 | case -NFS4ERR_GRACE: |
2c643488 | 3712 | case -EKEYEXPIRED: |
1da177e4 LT |
3713 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
3714 | task->tk_status = 0; | |
3715 | return -EAGAIN; | |
a8a4ae3a | 3716 | case -NFS4ERR_RETRY_UNCACHED_REP: |
1da177e4 LT |
3717 | case -NFS4ERR_OLD_STATEID: |
3718 | task->tk_status = 0; | |
3719 | return -EAGAIN; | |
3720 | } | |
3721 | task->tk_status = nfs4_map_errors(task->tk_status); | |
3722 | return 0; | |
0400a6b0 | 3723 | wait_on_recovery: |
a2c0b9e2 | 3724 | rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL); |
a2c0b9e2 TM |
3725 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0) |
3726 | rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task); | |
3727 | task->tk_status = 0; | |
3728 | return -EAGAIN; | |
1da177e4 LT |
3729 | } |
3730 | ||
bb8b27e5 TM |
3731 | int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, |
3732 | unsigned short port, struct rpc_cred *cred, | |
3733 | struct nfs4_setclientid_res *res) | |
1da177e4 LT |
3734 | { |
3735 | nfs4_verifier sc_verifier; | |
3736 | struct nfs4_setclientid setclientid = { | |
3737 | .sc_verifier = &sc_verifier, | |
3738 | .sc_prog = program, | |
f4eecd5d | 3739 | .sc_cb_ident = clp->cl_cb_ident, |
1da177e4 LT |
3740 | }; |
3741 | struct rpc_message msg = { | |
3742 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID], | |
3743 | .rpc_argp = &setclientid, | |
bb8b27e5 | 3744 | .rpc_resp = res, |
286d7d6a | 3745 | .rpc_cred = cred, |
1da177e4 | 3746 | }; |
bc4785cd | 3747 | __be32 *p; |
1da177e4 LT |
3748 | int loop = 0; |
3749 | int status; | |
3750 | ||
bc4785cd | 3751 | p = (__be32*)sc_verifier.data; |
1da177e4 LT |
3752 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); |
3753 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
3754 | ||
3755 | for(;;) { | |
3756 | setclientid.sc_name_len = scnprintf(setclientid.sc_name, | |
69dd716c | 3757 | sizeof(setclientid.sc_name), "%s/%s %s %s %u", |
d4d3c507 CL |
3758 | clp->cl_ipaddr, |
3759 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3760 | RPC_DISPLAY_ADDR), | |
69dd716c TM |
3761 | rpc_peeraddr2str(clp->cl_rpcclient, |
3762 | RPC_DISPLAY_PROTO), | |
78ea323b | 3763 | clp->cl_rpcclient->cl_auth->au_ops->au_name, |
1da177e4 LT |
3764 | clp->cl_id_uniquifier); |
3765 | setclientid.sc_netid_len = scnprintf(setclientid.sc_netid, | |
d4d3c507 CL |
3766 | sizeof(setclientid.sc_netid), |
3767 | rpc_peeraddr2str(clp->cl_rpcclient, | |
3768 | RPC_DISPLAY_NETID)); | |
1da177e4 | 3769 | setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr, |
d4d3c507 | 3770 | sizeof(setclientid.sc_uaddr), "%s.%u.%u", |
1da177e4 LT |
3771 | clp->cl_ipaddr, port >> 8, port & 255); |
3772 | ||
1bd714f2 | 3773 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
3774 | if (status != -NFS4ERR_CLID_INUSE) |
3775 | break; | |
fd954ae1 TM |
3776 | if (loop != 0) { |
3777 | ++clp->cl_id_uniquifier; | |
1da177e4 | 3778 | break; |
fd954ae1 TM |
3779 | } |
3780 | ++loop; | |
3781 | ssleep(clp->cl_lease_time / HZ + 1); | |
1da177e4 LT |
3782 | } |
3783 | return status; | |
3784 | } | |
3785 | ||
fd954ae1 | 3786 | int nfs4_proc_setclientid_confirm(struct nfs_client *clp, |
bb8b27e5 TM |
3787 | struct nfs4_setclientid_res *arg, |
3788 | struct rpc_cred *cred) | |
1da177e4 LT |
3789 | { |
3790 | struct nfs_fsinfo fsinfo; | |
3791 | struct rpc_message msg = { | |
3792 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM], | |
bb8b27e5 | 3793 | .rpc_argp = arg, |
1da177e4 | 3794 | .rpc_resp = &fsinfo, |
286d7d6a | 3795 | .rpc_cred = cred, |
1da177e4 LT |
3796 | }; |
3797 | unsigned long now; | |
3798 | int status; | |
3799 | ||
3800 | now = jiffies; | |
1bd714f2 | 3801 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
1da177e4 LT |
3802 | if (status == 0) { |
3803 | spin_lock(&clp->cl_lock); | |
3804 | clp->cl_lease_time = fsinfo.lease_time * HZ; | |
3805 | clp->cl_last_renewal = now; | |
3806 | spin_unlock(&clp->cl_lock); | |
3807 | } | |
3808 | return status; | |
3809 | } | |
3810 | ||
fe650407 TM |
3811 | struct nfs4_delegreturndata { |
3812 | struct nfs4_delegreturnargs args; | |
fa178f29 | 3813 | struct nfs4_delegreturnres res; |
fe650407 TM |
3814 | struct nfs_fh fh; |
3815 | nfs4_stateid stateid; | |
26e976a8 | 3816 | unsigned long timestamp; |
fa178f29 | 3817 | struct nfs_fattr fattr; |
fe650407 TM |
3818 | int rpc_status; |
3819 | }; | |
3820 | ||
fe650407 TM |
3821 | static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) |
3822 | { | |
3823 | struct nfs4_delegreturndata *data = calldata; | |
938e1010 | 3824 | |
14516c3a TM |
3825 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
3826 | return; | |
938e1010 | 3827 | |
79708861 RL |
3828 | switch (task->tk_status) { |
3829 | case -NFS4ERR_STALE_STATEID: | |
3830 | case -NFS4ERR_EXPIRED: | |
3831 | case 0: | |
fa178f29 | 3832 | renew_lease(data->res.server, data->timestamp); |
79708861 RL |
3833 | break; |
3834 | default: | |
3835 | if (nfs4_async_handle_error(task, data->res.server, NULL) == | |
3836 | -EAGAIN) { | |
3837 | nfs_restart_rpc(task, data->res.server->nfs_client); | |
3838 | return; | |
3839 | } | |
3840 | } | |
3841 | data->rpc_status = task->tk_status; | |
fe650407 TM |
3842 | } |
3843 | ||
3844 | static void nfs4_delegreturn_release(void *calldata) | |
3845 | { | |
fe650407 TM |
3846 | kfree(calldata); |
3847 | } | |
3848 | ||
938e1010 AA |
3849 | #if defined(CONFIG_NFS_V4_1) |
3850 | static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) | |
3851 | { | |
3852 | struct nfs4_delegreturndata *d_data; | |
3853 | ||
3854 | d_data = (struct nfs4_delegreturndata *)data; | |
3855 | ||
035168ab | 3856 | if (nfs4_setup_sequence(d_data->res.server, |
938e1010 AA |
3857 | &d_data->args.seq_args, |
3858 | &d_data->res.seq_res, 1, task)) | |
3859 | return; | |
3860 | rpc_call_start(task); | |
3861 | } | |
3862 | #endif /* CONFIG_NFS_V4_1 */ | |
3863 | ||
c8d149f3 | 3864 | static const struct rpc_call_ops nfs4_delegreturn_ops = { |
938e1010 AA |
3865 | #if defined(CONFIG_NFS_V4_1) |
3866 | .rpc_call_prepare = nfs4_delegreturn_prepare, | |
3867 | #endif /* CONFIG_NFS_V4_1 */ | |
fe650407 TM |
3868 | .rpc_call_done = nfs4_delegreturn_done, |
3869 | .rpc_release = nfs4_delegreturn_release, | |
3870 | }; | |
3871 | ||
e6f81075 | 3872 | static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
fe650407 TM |
3873 | { |
3874 | struct nfs4_delegreturndata *data; | |
fa178f29 | 3875 | struct nfs_server *server = NFS_SERVER(inode); |
fe650407 | 3876 | struct rpc_task *task; |
5138fde0 TM |
3877 | struct rpc_message msg = { |
3878 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN], | |
3879 | .rpc_cred = cred, | |
3880 | }; | |
c970aa85 TM |
3881 | struct rpc_task_setup task_setup_data = { |
3882 | .rpc_client = server->client, | |
5138fde0 | 3883 | .rpc_message = &msg, |
c970aa85 TM |
3884 | .callback_ops = &nfs4_delegreturn_ops, |
3885 | .flags = RPC_TASK_ASYNC, | |
3886 | }; | |
e6f81075 | 3887 | int status = 0; |
fe650407 | 3888 | |
8535b2be | 3889 | data = kzalloc(sizeof(*data), GFP_NOFS); |
fe650407 TM |
3890 | if (data == NULL) |
3891 | return -ENOMEM; | |
3892 | data->args.fhandle = &data->fh; | |
3893 | data->args.stateid = &data->stateid; | |
fa178f29 | 3894 | data->args.bitmask = server->attr_bitmask; |
fe650407 TM |
3895 | nfs_copy_fh(&data->fh, NFS_FH(inode)); |
3896 | memcpy(&data->stateid, stateid, sizeof(data->stateid)); | |
fa178f29 TM |
3897 | data->res.fattr = &data->fattr; |
3898 | data->res.server = server; | |
5138fde0 | 3899 | nfs_fattr_init(data->res.fattr); |
26e976a8 | 3900 | data->timestamp = jiffies; |
fe650407 TM |
3901 | data->rpc_status = 0; |
3902 | ||
c970aa85 | 3903 | task_setup_data.callback_data = data; |
1174dd1f TM |
3904 | msg.rpc_argp = &data->args; |
3905 | msg.rpc_resp = &data->res; | |
c970aa85 | 3906 | task = rpc_run_task(&task_setup_data); |
7a1218a2 | 3907 | if (IS_ERR(task)) |
fe650407 | 3908 | return PTR_ERR(task); |
e6f81075 TM |
3909 | if (!issync) |
3910 | goto out; | |
fe650407 | 3911 | status = nfs4_wait_for_completion_rpc_task(task); |
e6f81075 TM |
3912 | if (status != 0) |
3913 | goto out; | |
3914 | status = data->rpc_status; | |
3915 | if (status != 0) | |
3916 | goto out; | |
3917 | nfs_refresh_inode(inode, &data->fattr); | |
3918 | out: | |
e6b3c4db | 3919 | rpc_put_task(task); |
fe650407 | 3920 | return status; |
1da177e4 LT |
3921 | } |
3922 | ||
e6f81075 | 3923 | int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync) |
1da177e4 LT |
3924 | { |
3925 | struct nfs_server *server = NFS_SERVER(inode); | |
3926 | struct nfs4_exception exception = { }; | |
3927 | int err; | |
3928 | do { | |
e6f81075 | 3929 | err = _nfs4_proc_delegreturn(inode, cred, stateid, issync); |
1da177e4 LT |
3930 | switch (err) { |
3931 | case -NFS4ERR_STALE_STATEID: | |
3932 | case -NFS4ERR_EXPIRED: | |
1da177e4 LT |
3933 | case 0: |
3934 | return 0; | |
3935 | } | |
3936 | err = nfs4_handle_exception(server, err, &exception); | |
3937 | } while (exception.retry); | |
3938 | return err; | |
3939 | } | |
3940 | ||
3941 | #define NFS4_LOCK_MINTIMEOUT (1 * HZ) | |
3942 | #define NFS4_LOCK_MAXTIMEOUT (30 * HZ) | |
3943 | ||
3944 | /* | |
3945 | * sleep, with exponential backoff, and retry the LOCK operation. | |
3946 | */ | |
3947 | static unsigned long | |
3948 | nfs4_set_lock_task_retry(unsigned long timeout) | |
3949 | { | |
150030b7 | 3950 | schedule_timeout_killable(timeout); |
1da177e4 LT |
3951 | timeout <<= 1; |
3952 | if (timeout > NFS4_LOCK_MAXTIMEOUT) | |
3953 | return NFS4_LOCK_MAXTIMEOUT; | |
3954 | return timeout; | |
3955 | } | |
3956 | ||
1da177e4 LT |
3957 | static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) |
3958 | { | |
3959 | struct inode *inode = state->inode; | |
3960 | struct nfs_server *server = NFS_SERVER(inode); | |
7539bbab | 3961 | struct nfs_client *clp = server->nfs_client; |
911d1aaf | 3962 | struct nfs_lockt_args arg = { |
1da177e4 | 3963 | .fh = NFS_FH(inode), |
911d1aaf | 3964 | .fl = request, |
1da177e4 | 3965 | }; |
911d1aaf TM |
3966 | struct nfs_lockt_res res = { |
3967 | .denied = request, | |
1da177e4 LT |
3968 | }; |
3969 | struct rpc_message msg = { | |
3970 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], | |
3971 | .rpc_argp = &arg, | |
3972 | .rpc_resp = &res, | |
3973 | .rpc_cred = state->owner->so_cred, | |
3974 | }; | |
1da177e4 LT |
3975 | struct nfs4_lock_state *lsp; |
3976 | int status; | |
3977 | ||
911d1aaf | 3978 | arg.lock_owner.clientid = clp->cl_clientid; |
8d0a8a9d TM |
3979 | status = nfs4_set_lock_state(state, request); |
3980 | if (status != 0) | |
3981 | goto out; | |
3982 | lsp = request->fl_u.nfs4_fl.owner; | |
9f958ab8 | 3983 | arg.lock_owner.id = lsp->ls_id.id; |
d035c36c | 3984 | arg.lock_owner.s_dev = server->s_dev; |
7c513058 | 3985 | status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); |
911d1aaf TM |
3986 | switch (status) { |
3987 | case 0: | |
3988 | request->fl_type = F_UNLCK; | |
3989 | break; | |
3990 | case -NFS4ERR_DENIED: | |
3991 | status = 0; | |
1da177e4 | 3992 | } |
70cc6487 | 3993 | request->fl_ops->fl_release_private(request); |
8d0a8a9d | 3994 | out: |
1da177e4 LT |
3995 | return status; |
3996 | } | |
3997 | ||
3998 | static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
3999 | { | |
4000 | struct nfs4_exception exception = { }; | |
4001 | int err; | |
4002 | ||
4003 | do { | |
4004 | err = nfs4_handle_exception(NFS_SERVER(state->inode), | |
4005 | _nfs4_proc_getlk(state, cmd, request), | |
4006 | &exception); | |
4007 | } while (exception.retry); | |
4008 | return err; | |
4009 | } | |
4010 | ||
4011 | static int do_vfs_lock(struct file *file, struct file_lock *fl) | |
4012 | { | |
4013 | int res = 0; | |
4014 | switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) { | |
4015 | case FL_POSIX: | |
4016 | res = posix_lock_file_wait(file, fl); | |
4017 | break; | |
4018 | case FL_FLOCK: | |
4019 | res = flock_lock_file_wait(file, fl); | |
4020 | break; | |
4021 | default: | |
4022 | BUG(); | |
4023 | } | |
1da177e4 LT |
4024 | return res; |
4025 | } | |
4026 | ||
faf5f49c | 4027 | struct nfs4_unlockdata { |
911d1aaf TM |
4028 | struct nfs_locku_args arg; |
4029 | struct nfs_locku_res res; | |
faf5f49c TM |
4030 | struct nfs4_lock_state *lsp; |
4031 | struct nfs_open_context *ctx; | |
911d1aaf TM |
4032 | struct file_lock fl; |
4033 | const struct nfs_server *server; | |
26e976a8 | 4034 | unsigned long timestamp; |
faf5f49c TM |
4035 | }; |
4036 | ||
911d1aaf TM |
4037 | static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl, |
4038 | struct nfs_open_context *ctx, | |
4039 | struct nfs4_lock_state *lsp, | |
4040 | struct nfs_seqid *seqid) | |
4041 | { | |
4042 | struct nfs4_unlockdata *p; | |
4043 | struct inode *inode = lsp->ls_state->inode; | |
4044 | ||
8535b2be | 4045 | p = kzalloc(sizeof(*p), GFP_NOFS); |
911d1aaf TM |
4046 | if (p == NULL) |
4047 | return NULL; | |
4048 | p->arg.fh = NFS_FH(inode); | |
4049 | p->arg.fl = &p->fl; | |
4050 | p->arg.seqid = seqid; | |
c1d51931 | 4051 | p->res.seqid = seqid; |
911d1aaf TM |
4052 | p->arg.stateid = &lsp->ls_stateid; |
4053 | p->lsp = lsp; | |
4054 | atomic_inc(&lsp->ls_count); | |
4055 | /* Ensure we don't close file until we're done freeing locks! */ | |
4056 | p->ctx = get_nfs_open_context(ctx); | |
4057 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4058 | p->server = NFS_SERVER(inode); | |
4059 | return p; | |
4060 | } | |
4061 | ||
06f814a3 | 4062 | static void nfs4_locku_release_calldata(void *data) |
faf5f49c | 4063 | { |
963d8fe5 | 4064 | struct nfs4_unlockdata *calldata = data; |
911d1aaf | 4065 | nfs_free_seqid(calldata->arg.seqid); |
06f814a3 TM |
4066 | nfs4_put_lock_state(calldata->lsp); |
4067 | put_nfs_open_context(calldata->ctx); | |
4068 | kfree(calldata); | |
faf5f49c TM |
4069 | } |
4070 | ||
963d8fe5 | 4071 | static void nfs4_locku_done(struct rpc_task *task, void *data) |
faf5f49c | 4072 | { |
963d8fe5 | 4073 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4074 | |
14516c3a TM |
4075 | if (!nfs4_sequence_done(task, &calldata->res.seq_res)) |
4076 | return; | |
faf5f49c TM |
4077 | switch (task->tk_status) { |
4078 | case 0: | |
4079 | memcpy(calldata->lsp->ls_stateid.data, | |
911d1aaf | 4080 | calldata->res.stateid.data, |
faf5f49c | 4081 | sizeof(calldata->lsp->ls_stateid.data)); |
26e976a8 | 4082 | renew_lease(calldata->server, calldata->timestamp); |
faf5f49c | 4083 | break; |
9e33bed5 TM |
4084 | case -NFS4ERR_BAD_STATEID: |
4085 | case -NFS4ERR_OLD_STATEID: | |
faf5f49c TM |
4086 | case -NFS4ERR_STALE_STATEID: |
4087 | case -NFS4ERR_EXPIRED: | |
faf5f49c TM |
4088 | break; |
4089 | default: | |
9e33bed5 | 4090 | if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) |
0110ee15 | 4091 | nfs_restart_rpc(task, |
d61e612a | 4092 | calldata->server->nfs_client); |
faf5f49c | 4093 | } |
faf5f49c TM |
4094 | } |
4095 | ||
4ce70ada | 4096 | static void nfs4_locku_prepare(struct rpc_task *task, void *data) |
faf5f49c | 4097 | { |
4ce70ada | 4098 | struct nfs4_unlockdata *calldata = data; |
faf5f49c | 4099 | |
911d1aaf | 4100 | if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0) |
faf5f49c TM |
4101 | return; |
4102 | if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) { | |
963d8fe5 TM |
4103 | /* Note: exit _without_ running nfs4_locku_done */ |
4104 | task->tk_action = NULL; | |
faf5f49c TM |
4105 | return; |
4106 | } | |
26e976a8 | 4107 | calldata->timestamp = jiffies; |
035168ab | 4108 | if (nfs4_setup_sequence(calldata->server, |
a893693c AA |
4109 | &calldata->arg.seq_args, |
4110 | &calldata->res.seq_res, 1, task)) | |
4111 | return; | |
5138fde0 | 4112 | rpc_call_start(task); |
faf5f49c TM |
4113 | } |
4114 | ||
963d8fe5 | 4115 | static const struct rpc_call_ops nfs4_locku_ops = { |
4ce70ada | 4116 | .rpc_call_prepare = nfs4_locku_prepare, |
963d8fe5 | 4117 | .rpc_call_done = nfs4_locku_done, |
06f814a3 | 4118 | .rpc_release = nfs4_locku_release_calldata, |
963d8fe5 TM |
4119 | }; |
4120 | ||
a5d16a4d TM |
4121 | static struct rpc_task *nfs4_do_unlck(struct file_lock *fl, |
4122 | struct nfs_open_context *ctx, | |
4123 | struct nfs4_lock_state *lsp, | |
4124 | struct nfs_seqid *seqid) | |
4125 | { | |
4126 | struct nfs4_unlockdata *data; | |
5138fde0 TM |
4127 | struct rpc_message msg = { |
4128 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU], | |
4129 | .rpc_cred = ctx->cred, | |
4130 | }; | |
c970aa85 TM |
4131 | struct rpc_task_setup task_setup_data = { |
4132 | .rpc_client = NFS_CLIENT(lsp->ls_state->inode), | |
5138fde0 | 4133 | .rpc_message = &msg, |
c970aa85 | 4134 | .callback_ops = &nfs4_locku_ops, |
101070ca | 4135 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4136 | .flags = RPC_TASK_ASYNC, |
4137 | }; | |
a5d16a4d | 4138 | |
137d6aca FF |
4139 | /* Ensure this is an unlock - when canceling a lock, the |
4140 | * canceled lock is passed in, and it won't be an unlock. | |
4141 | */ | |
4142 | fl->fl_type = F_UNLCK; | |
4143 | ||
a5d16a4d TM |
4144 | data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid); |
4145 | if (data == NULL) { | |
4146 | nfs_free_seqid(seqid); | |
4147 | return ERR_PTR(-ENOMEM); | |
4148 | } | |
4149 | ||
1174dd1f TM |
4150 | msg.rpc_argp = &data->arg; |
4151 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4152 | task_setup_data.callback_data = data; |
4153 | return rpc_run_task(&task_setup_data); | |
a5d16a4d TM |
4154 | } |
4155 | ||
faf5f49c TM |
4156 | static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request) |
4157 | { | |
19e03c57 | 4158 | struct nfs_inode *nfsi = NFS_I(state->inode); |
911d1aaf | 4159 | struct nfs_seqid *seqid; |
1da177e4 | 4160 | struct nfs4_lock_state *lsp; |
06f814a3 TM |
4161 | struct rpc_task *task; |
4162 | int status = 0; | |
536ff0f8 | 4163 | unsigned char fl_flags = request->fl_flags; |
faf5f49c | 4164 | |
8d0a8a9d | 4165 | status = nfs4_set_lock_state(state, request); |
9b073574 TM |
4166 | /* Unlock _before_ we do the RPC call */ |
4167 | request->fl_flags |= FL_EXISTS; | |
19e03c57 TM |
4168 | down_read(&nfsi->rwsem); |
4169 | if (do_vfs_lock(request->fl_file, request) == -ENOENT) { | |
4170 | up_read(&nfsi->rwsem); | |
9b073574 | 4171 | goto out; |
19e03c57 TM |
4172 | } |
4173 | up_read(&nfsi->rwsem); | |
8d0a8a9d | 4174 | if (status != 0) |
9b073574 TM |
4175 | goto out; |
4176 | /* Is this a delegated lock? */ | |
4177 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) | |
4178 | goto out; | |
8d0a8a9d | 4179 | lsp = request->fl_u.nfs4_fl.owner; |
8535b2be | 4180 | seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL); |
9b073574 | 4181 | status = -ENOMEM; |
911d1aaf | 4182 | if (seqid == NULL) |
9b073574 | 4183 | goto out; |
cd3758e3 | 4184 | task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid); |
a5d16a4d TM |
4185 | status = PTR_ERR(task); |
4186 | if (IS_ERR(task)) | |
9b073574 | 4187 | goto out; |
a5d16a4d | 4188 | status = nfs4_wait_for_completion_rpc_task(task); |
e6b3c4db | 4189 | rpc_put_task(task); |
9b073574 | 4190 | out: |
536ff0f8 | 4191 | request->fl_flags = fl_flags; |
1da177e4 LT |
4192 | return status; |
4193 | } | |
4194 | ||
a5d16a4d TM |
4195 | struct nfs4_lockdata { |
4196 | struct nfs_lock_args arg; | |
4197 | struct nfs_lock_res res; | |
4198 | struct nfs4_lock_state *lsp; | |
4199 | struct nfs_open_context *ctx; | |
4200 | struct file_lock fl; | |
26e976a8 | 4201 | unsigned long timestamp; |
a5d16a4d TM |
4202 | int rpc_status; |
4203 | int cancelled; | |
66179efe | 4204 | struct nfs_server *server; |
a5d16a4d TM |
4205 | }; |
4206 | ||
4207 | static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl, | |
8535b2be TM |
4208 | struct nfs_open_context *ctx, struct nfs4_lock_state *lsp, |
4209 | gfp_t gfp_mask) | |
1da177e4 | 4210 | { |
a5d16a4d TM |
4211 | struct nfs4_lockdata *p; |
4212 | struct inode *inode = lsp->ls_state->inode; | |
1da177e4 | 4213 | struct nfs_server *server = NFS_SERVER(inode); |
a5d16a4d | 4214 | |
8535b2be | 4215 | p = kzalloc(sizeof(*p), gfp_mask); |
a5d16a4d TM |
4216 | if (p == NULL) |
4217 | return NULL; | |
4218 | ||
4219 | p->arg.fh = NFS_FH(inode); | |
4220 | p->arg.fl = &p->fl; | |
8535b2be | 4221 | p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask); |
2f74c0a0 TM |
4222 | if (p->arg.open_seqid == NULL) |
4223 | goto out_free; | |
8535b2be | 4224 | p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask); |
a5d16a4d | 4225 | if (p->arg.lock_seqid == NULL) |
2f74c0a0 | 4226 | goto out_free_seqid; |
a5d16a4d | 4227 | p->arg.lock_stateid = &lsp->ls_stateid; |
7539bbab | 4228 | p->arg.lock_owner.clientid = server->nfs_client->cl_clientid; |
9f958ab8 | 4229 | p->arg.lock_owner.id = lsp->ls_id.id; |
d035c36c | 4230 | p->arg.lock_owner.s_dev = server->s_dev; |
c1d51931 | 4231 | p->res.lock_seqid = p->arg.lock_seqid; |
a5d16a4d | 4232 | p->lsp = lsp; |
66179efe | 4233 | p->server = server; |
a5d16a4d TM |
4234 | atomic_inc(&lsp->ls_count); |
4235 | p->ctx = get_nfs_open_context(ctx); | |
4236 | memcpy(&p->fl, fl, sizeof(p->fl)); | |
4237 | return p; | |
2f74c0a0 TM |
4238 | out_free_seqid: |
4239 | nfs_free_seqid(p->arg.open_seqid); | |
a5d16a4d TM |
4240 | out_free: |
4241 | kfree(p); | |
4242 | return NULL; | |
4243 | } | |
4244 | ||
4245 | static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) | |
4246 | { | |
4247 | struct nfs4_lockdata *data = calldata; | |
4248 | struct nfs4_state *state = data->lsp->ls_state; | |
06735b34 | 4249 | |
3110ff80 | 4250 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 TM |
4251 | if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0) |
4252 | return; | |
a5d16a4d TM |
4253 | /* Do we need to do an open_to_lock_owner? */ |
4254 | if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) { | |
e6e21970 TM |
4255 | if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) |
4256 | return; | |
a5d16a4d TM |
4257 | data->arg.open_stateid = &state->stateid; |
4258 | data->arg.new_lock_owner = 1; | |
c1d51931 | 4259 | data->res.open_seqid = data->arg.open_seqid; |
2f74c0a0 TM |
4260 | } else |
4261 | data->arg.new_lock_owner = 0; | |
26e976a8 | 4262 | data->timestamp = jiffies; |
035168ab TM |
4263 | if (nfs4_setup_sequence(data->server, |
4264 | &data->arg.seq_args, | |
66179efe AA |
4265 | &data->res.seq_res, 1, task)) |
4266 | return; | |
5138fde0 | 4267 | rpc_call_start(task); |
3110ff80 | 4268 | dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status); |
a5d16a4d TM |
4269 | } |
4270 | ||
b257957e AB |
4271 | static void nfs4_recover_lock_prepare(struct rpc_task *task, void *calldata) |
4272 | { | |
4273 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); | |
4274 | nfs4_lock_prepare(task, calldata); | |
4275 | } | |
4276 | ||
a5d16a4d TM |
4277 | static void nfs4_lock_done(struct rpc_task *task, void *calldata) |
4278 | { | |
4279 | struct nfs4_lockdata *data = calldata; | |
4280 | ||
3110ff80 | 4281 | dprintk("%s: begin!\n", __func__); |
a5d16a4d | 4282 | |
14516c3a TM |
4283 | if (!nfs4_sequence_done(task, &data->res.seq_res)) |
4284 | return; | |
66179efe | 4285 | |
a5d16a4d | 4286 | data->rpc_status = task->tk_status; |
a5d16a4d | 4287 | if (data->arg.new_lock_owner != 0) { |
a5d16a4d TM |
4288 | if (data->rpc_status == 0) |
4289 | nfs_confirm_seqid(&data->lsp->ls_seqid, 0); | |
4290 | else | |
4291 | goto out; | |
4292 | } | |
4293 | if (data->rpc_status == 0) { | |
4294 | memcpy(data->lsp->ls_stateid.data, data->res.stateid.data, | |
4295 | sizeof(data->lsp->ls_stateid.data)); | |
4296 | data->lsp->ls_flags |= NFS_LOCK_INITIALIZED; | |
88be9f99 | 4297 | renew_lease(NFS_SERVER(data->ctx->path.dentry->d_inode), data->timestamp); |
a5d16a4d | 4298 | } |
a5d16a4d | 4299 | out: |
3110ff80 | 4300 | dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status); |
a5d16a4d TM |
4301 | } |
4302 | ||
4303 | static void nfs4_lock_release(void *calldata) | |
4304 | { | |
4305 | struct nfs4_lockdata *data = calldata; | |
4306 | ||
3110ff80 | 4307 | dprintk("%s: begin!\n", __func__); |
2f74c0a0 | 4308 | nfs_free_seqid(data->arg.open_seqid); |
a5d16a4d TM |
4309 | if (data->cancelled != 0) { |
4310 | struct rpc_task *task; | |
4311 | task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, | |
4312 | data->arg.lock_seqid); | |
4313 | if (!IS_ERR(task)) | |
bf294b41 | 4314 | rpc_put_task_async(task); |
3110ff80 | 4315 | dprintk("%s: cancelling lock!\n", __func__); |
a5d16a4d TM |
4316 | } else |
4317 | nfs_free_seqid(data->arg.lock_seqid); | |
4318 | nfs4_put_lock_state(data->lsp); | |
4319 | put_nfs_open_context(data->ctx); | |
4320 | kfree(data); | |
3110ff80 | 4321 | dprintk("%s: done!\n", __func__); |
a5d16a4d TM |
4322 | } |
4323 | ||
4324 | static const struct rpc_call_ops nfs4_lock_ops = { | |
4325 | .rpc_call_prepare = nfs4_lock_prepare, | |
4326 | .rpc_call_done = nfs4_lock_done, | |
4327 | .rpc_release = nfs4_lock_release, | |
4328 | }; | |
4329 | ||
b257957e AB |
4330 | static const struct rpc_call_ops nfs4_recover_lock_ops = { |
4331 | .rpc_call_prepare = nfs4_recover_lock_prepare, | |
4332 | .rpc_call_done = nfs4_lock_done, | |
4333 | .rpc_release = nfs4_lock_release, | |
4334 | }; | |
4335 | ||
2bee72a6 TM |
4336 | static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error) |
4337 | { | |
2bee72a6 TM |
4338 | switch (error) { |
4339 | case -NFS4ERR_ADMIN_REVOKED: | |
4340 | case -NFS4ERR_BAD_STATEID: | |
ecac799a | 4341 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
2bee72a6 TM |
4342 | if (new_lock_owner != 0 || |
4343 | (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) | |
ecac799a | 4344 | nfs4_schedule_stateid_recovery(server, lsp->ls_state); |
a2c0b9e2 TM |
4345 | break; |
4346 | case -NFS4ERR_STALE_STATEID: | |
a2c0b9e2 | 4347 | lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; |
ecac799a TM |
4348 | case -NFS4ERR_EXPIRED: |
4349 | nfs4_schedule_lease_recovery(server->nfs_client); | |
2bee72a6 TM |
4350 | }; |
4351 | } | |
4352 | ||
afe6c27c | 4353 | static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type) |
a5d16a4d TM |
4354 | { |
4355 | struct nfs4_lockdata *data; | |
4356 | struct rpc_task *task; | |
5138fde0 TM |
4357 | struct rpc_message msg = { |
4358 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK], | |
4359 | .rpc_cred = state->owner->so_cred, | |
4360 | }; | |
c970aa85 TM |
4361 | struct rpc_task_setup task_setup_data = { |
4362 | .rpc_client = NFS_CLIENT(state->inode), | |
5138fde0 | 4363 | .rpc_message = &msg, |
c970aa85 | 4364 | .callback_ops = &nfs4_lock_ops, |
101070ca | 4365 | .workqueue = nfsiod_workqueue, |
c970aa85 TM |
4366 | .flags = RPC_TASK_ASYNC, |
4367 | }; | |
a5d16a4d TM |
4368 | int ret; |
4369 | ||
3110ff80 | 4370 | dprintk("%s: begin!\n", __func__); |
cd3758e3 | 4371 | data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file), |
8535b2be TM |
4372 | fl->fl_u.nfs4_fl.owner, |
4373 | recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS); | |
a5d16a4d TM |
4374 | if (data == NULL) |
4375 | return -ENOMEM; | |
4376 | if (IS_SETLKW(cmd)) | |
4377 | data->arg.block = 1; | |
b257957e AB |
4378 | if (recovery_type > NFS_LOCK_NEW) { |
4379 | if (recovery_type == NFS_LOCK_RECLAIM) | |
afe6c27c | 4380 | data->arg.reclaim = NFS_LOCK_RECLAIM; |
b257957e AB |
4381 | task_setup_data.callback_ops = &nfs4_recover_lock_ops; |
4382 | } | |
1174dd1f TM |
4383 | msg.rpc_argp = &data->arg; |
4384 | msg.rpc_resp = &data->res; | |
c970aa85 TM |
4385 | task_setup_data.callback_data = data; |
4386 | task = rpc_run_task(&task_setup_data); | |
7a1218a2 | 4387 | if (IS_ERR(task)) |
a5d16a4d | 4388 | return PTR_ERR(task); |
a5d16a4d TM |
4389 | ret = nfs4_wait_for_completion_rpc_task(task); |
4390 | if (ret == 0) { | |
4391 | ret = data->rpc_status; | |
2bee72a6 TM |
4392 | if (ret) |
4393 | nfs4_handle_setlk_error(data->server, data->lsp, | |
4394 | data->arg.new_lock_owner, ret); | |
a5d16a4d TM |
4395 | } else |
4396 | data->cancelled = 1; | |
e6b3c4db | 4397 | rpc_put_task(task); |
3110ff80 | 4398 | dprintk("%s: done, ret = %d!\n", __func__, ret); |
a5d16a4d | 4399 | return ret; |
1da177e4 LT |
4400 | } |
4401 | ||
4402 | static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) | |
4403 | { | |
202b50dc TM |
4404 | struct nfs_server *server = NFS_SERVER(state->inode); |
4405 | struct nfs4_exception exception = { }; | |
4406 | int err; | |
4407 | ||
4408 | do { | |
42a2d13e TM |
4409 | /* Cache the lock if possible... */ |
4410 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) | |
4411 | return 0; | |
afe6c27c | 4412 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM); |
168667c4 | 4413 | if (err != -NFS4ERR_DELAY) |
202b50dc TM |
4414 | break; |
4415 | nfs4_handle_exception(server, err, &exception); | |
4416 | } while (exception.retry); | |
4417 | return err; | |
1da177e4 LT |
4418 | } |
4419 | ||
4420 | static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) | |
4421 | { | |
202b50dc TM |
4422 | struct nfs_server *server = NFS_SERVER(state->inode); |
4423 | struct nfs4_exception exception = { }; | |
4424 | int err; | |
4425 | ||
6bfc93ef TM |
4426 | err = nfs4_set_lock_state(state, request); |
4427 | if (err != 0) | |
4428 | return err; | |
202b50dc | 4429 | do { |
42a2d13e TM |
4430 | if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0) |
4431 | return 0; | |
afe6c27c | 4432 | err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED); |
a9ed2e25 TM |
4433 | switch (err) { |
4434 | default: | |
4435 | goto out; | |
4436 | case -NFS4ERR_GRACE: | |
4437 | case -NFS4ERR_DELAY: | |
4438 | nfs4_handle_exception(server, err, &exception); | |
4439 | err = 0; | |
4440 | } | |
202b50dc | 4441 | } while (exception.retry); |
a9ed2e25 | 4442 | out: |
202b50dc | 4443 | return err; |
1da177e4 LT |
4444 | } |
4445 | ||
4446 | static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4447 | { | |
19e03c57 | 4448 | struct nfs_inode *nfsi = NFS_I(state->inode); |
01c3b861 | 4449 | unsigned char fl_flags = request->fl_flags; |
8e469ebd | 4450 | int status = -ENOLCK; |
1da177e4 | 4451 | |
8e469ebd TM |
4452 | if ((fl_flags & FL_POSIX) && |
4453 | !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) | |
4454 | goto out; | |
6bfc93ef | 4455 | /* Is this a delegated open? */ |
6bfc93ef TM |
4456 | status = nfs4_set_lock_state(state, request); |
4457 | if (status != 0) | |
4458 | goto out; | |
01c3b861 TM |
4459 | request->fl_flags |= FL_ACCESS; |
4460 | status = do_vfs_lock(request->fl_file, request); | |
4461 | if (status < 0) | |
4462 | goto out; | |
19e03c57 | 4463 | down_read(&nfsi->rwsem); |
01c3b861 | 4464 | if (test_bit(NFS_DELEGATED_STATE, &state->flags)) { |
01c3b861 | 4465 | /* Yes: cache locks! */ |
01c3b861 | 4466 | /* ...but avoid races with delegation recall... */ |
19e03c57 TM |
4467 | request->fl_flags = fl_flags & ~FL_SLEEP; |
4468 | status = do_vfs_lock(request->fl_file, request); | |
4469 | goto out_unlock; | |
01c3b861 | 4470 | } |
afe6c27c | 4471 | status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW); |
6bfc93ef | 4472 | if (status != 0) |
01c3b861 | 4473 | goto out_unlock; |
6bfc93ef | 4474 | /* Note: we always want to sleep here! */ |
01c3b861 | 4475 | request->fl_flags = fl_flags | FL_SLEEP; |
6bfc93ef | 4476 | if (do_vfs_lock(request->fl_file, request) < 0) |
3110ff80 | 4477 | printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __func__); |
01c3b861 | 4478 | out_unlock: |
19e03c57 | 4479 | up_read(&nfsi->rwsem); |
01c3b861 TM |
4480 | out: |
4481 | request->fl_flags = fl_flags; | |
1da177e4 LT |
4482 | return status; |
4483 | } | |
4484 | ||
4485 | static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) | |
4486 | { | |
4487 | struct nfs4_exception exception = { }; | |
4488 | int err; | |
4489 | ||
4490 | do { | |
965b5d67 TM |
4491 | err = _nfs4_proc_setlk(state, cmd, request); |
4492 | if (err == -NFS4ERR_DENIED) | |
4493 | err = -EAGAIN; | |
1da177e4 | 4494 | err = nfs4_handle_exception(NFS_SERVER(state->inode), |
965b5d67 | 4495 | err, &exception); |
1da177e4 LT |
4496 | } while (exception.retry); |
4497 | return err; | |
4498 | } | |
4499 | ||
4500 | static int | |
4501 | nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) | |
4502 | { | |
4503 | struct nfs_open_context *ctx; | |
4504 | struct nfs4_state *state; | |
4505 | unsigned long timeout = NFS4_LOCK_MINTIMEOUT; | |
4506 | int status; | |
4507 | ||
4508 | /* verify open state */ | |
cd3758e3 | 4509 | ctx = nfs_file_open_context(filp); |
1da177e4 LT |
4510 | state = ctx->state; |
4511 | ||
4512 | if (request->fl_start < 0 || request->fl_end < 0) | |
4513 | return -EINVAL; | |
4514 | ||
d953126a TM |
4515 | if (IS_GETLK(cmd)) { |
4516 | if (state != NULL) | |
4517 | return nfs4_proc_getlk(state, F_GETLK, request); | |
4518 | return 0; | |
4519 | } | |
1da177e4 LT |
4520 | |
4521 | if (!(IS_SETLK(cmd) || IS_SETLKW(cmd))) | |
4522 | return -EINVAL; | |
4523 | ||
d953126a TM |
4524 | if (request->fl_type == F_UNLCK) { |
4525 | if (state != NULL) | |
4526 | return nfs4_proc_unlck(state, cmd, request); | |
4527 | return 0; | |
4528 | } | |
1da177e4 | 4529 | |
d953126a TM |
4530 | if (state == NULL) |
4531 | return -ENOLCK; | |
1da177e4 LT |
4532 | do { |
4533 | status = nfs4_proc_setlk(state, cmd, request); | |
4534 | if ((status != -EAGAIN) || IS_SETLK(cmd)) | |
4535 | break; | |
4536 | timeout = nfs4_set_lock_task_retry(timeout); | |
4537 | status = -ERESTARTSYS; | |
4538 | if (signalled()) | |
4539 | break; | |
4540 | } while(status < 0); | |
1da177e4 LT |
4541 | return status; |
4542 | } | |
4543 | ||
888e694c TM |
4544 | int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl) |
4545 | { | |
4546 | struct nfs_server *server = NFS_SERVER(state->inode); | |
4547 | struct nfs4_exception exception = { }; | |
4548 | int err; | |
4549 | ||
4550 | err = nfs4_set_lock_state(state, fl); | |
4551 | if (err != 0) | |
4552 | goto out; | |
4553 | do { | |
afe6c27c | 4554 | err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW); |
d5122201 TM |
4555 | switch (err) { |
4556 | default: | |
4557 | printk(KERN_ERR "%s: unhandled error %d.\n", | |
4558 | __func__, err); | |
4559 | case 0: | |
965b5d67 | 4560 | case -ESTALE: |
d5122201 TM |
4561 | goto out; |
4562 | case -NFS4ERR_EXPIRED: | |
0ced63d1 | 4563 | nfs4_schedule_stateid_recovery(server, state); |
d5122201 | 4564 | case -NFS4ERR_STALE_CLIENTID: |
965b5d67 | 4565 | case -NFS4ERR_STALE_STATEID: |
0400a6b0 TM |
4566 | nfs4_schedule_lease_recovery(server->nfs_client); |
4567 | goto out; | |
74e7bb73 RL |
4568 | case -NFS4ERR_BADSESSION: |
4569 | case -NFS4ERR_BADSLOT: | |
4570 | case -NFS4ERR_BAD_HIGH_SLOT: | |
4571 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
4572 | case -NFS4ERR_DEADSESSION: | |
0400a6b0 | 4573 | nfs4_schedule_session_recovery(server->nfs_client->cl_session); |
d5122201 | 4574 | goto out; |
965b5d67 TM |
4575 | case -ERESTARTSYS: |
4576 | /* | |
4577 | * The show must go on: exit, but mark the | |
4578 | * stateid as needing recovery. | |
4579 | */ | |
4580 | case -NFS4ERR_ADMIN_REVOKED: | |
4581 | case -NFS4ERR_BAD_STATEID: | |
4582 | case -NFS4ERR_OPENMODE: | |
0400a6b0 | 4583 | nfs4_schedule_stateid_recovery(server, state); |
965b5d67 TM |
4584 | err = 0; |
4585 | goto out; | |
168667c4 TM |
4586 | case -EKEYEXPIRED: |
4587 | /* | |
4588 | * User RPCSEC_GSS context has expired. | |
4589 | * We cannot recover this stateid now, so | |
4590 | * skip it and allow recovery thread to | |
4591 | * proceed. | |
4592 | */ | |
4593 | err = 0; | |
4594 | goto out; | |
965b5d67 TM |
4595 | case -ENOMEM: |
4596 | case -NFS4ERR_DENIED: | |
4597 | /* kill_proc(fl->fl_pid, SIGLOST, 1); */ | |
4598 | err = 0; | |
4599 | goto out; | |
d5122201 TM |
4600 | case -NFS4ERR_DELAY: |
4601 | break; | |
4602 | } | |
888e694c TM |
4603 | err = nfs4_handle_exception(server, err, &exception); |
4604 | } while (exception.retry); | |
4605 | out: | |
4606 | return err; | |
4607 | } | |
6b3b5496 | 4608 | |
d3c7b7cc TM |
4609 | static void nfs4_release_lockowner_release(void *calldata) |
4610 | { | |
4611 | kfree(calldata); | |
4612 | } | |
4613 | ||
4614 | const struct rpc_call_ops nfs4_release_lockowner_ops = { | |
4615 | .rpc_release = nfs4_release_lockowner_release, | |
4616 | }; | |
4617 | ||
4618 | void nfs4_release_lockowner(const struct nfs4_lock_state *lsp) | |
4619 | { | |
4620 | struct nfs_server *server = lsp->ls_state->owner->so_server; | |
4621 | struct nfs_release_lockowner_args *args; | |
4622 | struct rpc_message msg = { | |
4623 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER], | |
4624 | }; | |
4625 | ||
4626 | if (server->nfs_client->cl_mvops->minor_version != 0) | |
4627 | return; | |
4628 | args = kmalloc(sizeof(*args), GFP_NOFS); | |
4629 | if (!args) | |
4630 | return; | |
4631 | args->lock_owner.clientid = server->nfs_client->cl_clientid; | |
4632 | args->lock_owner.id = lsp->ls_id.id; | |
d035c36c | 4633 | args->lock_owner.s_dev = server->s_dev; |
d3c7b7cc TM |
4634 | msg.rpc_argp = args; |
4635 | rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, args); | |
4636 | } | |
4637 | ||
aa1870af BF |
4638 | #define XATTR_NAME_NFSV4_ACL "system.nfs4_acl" |
4639 | ||
64c2ce8b AK |
4640 | static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key, |
4641 | const void *buf, size_t buflen, | |
4642 | int flags, int type) | |
6b3b5496 | 4643 | { |
64c2ce8b AK |
4644 | if (strcmp(key, "") != 0) |
4645 | return -EINVAL; | |
4b580ee3 | 4646 | |
64c2ce8b | 4647 | return nfs4_proc_set_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4648 | } |
4649 | ||
64c2ce8b AK |
4650 | static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key, |
4651 | void *buf, size_t buflen, int type) | |
6b3b5496 | 4652 | { |
64c2ce8b AK |
4653 | if (strcmp(key, "") != 0) |
4654 | return -EINVAL; | |
aa1870af | 4655 | |
64c2ce8b | 4656 | return nfs4_proc_get_acl(dentry->d_inode, buf, buflen); |
6b3b5496 BF |
4657 | } |
4658 | ||
64c2ce8b AK |
4659 | static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list, |
4660 | size_t list_len, const char *name, | |
4661 | size_t name_len, int type) | |
6b3b5496 | 4662 | { |
64c2ce8b | 4663 | size_t len = sizeof(XATTR_NAME_NFSV4_ACL); |
6b3b5496 | 4664 | |
096455a2 BF |
4665 | if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode))) |
4666 | return 0; | |
64c2ce8b AK |
4667 | |
4668 | if (list && len <= list_len) | |
4669 | memcpy(list, XATTR_NAME_NFSV4_ACL, len); | |
aa1870af | 4670 | return len; |
6b3b5496 BF |
4671 | } |
4672 | ||
533eb461 AA |
4673 | /* |
4674 | * nfs_fhget will use either the mounted_on_fileid or the fileid | |
4675 | */ | |
69aaaae1 TM |
4676 | static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) |
4677 | { | |
533eb461 AA |
4678 | if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) || |
4679 | (fattr->valid & NFS_ATTR_FATTR_FILEID)) && | |
4680 | (fattr->valid & NFS_ATTR_FATTR_FSID) && | |
4681 | (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL))) | |
69aaaae1 TM |
4682 | return; |
4683 | ||
4684 | fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | | |
4685 | NFS_ATTR_FATTR_NLINK; | |
4686 | fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; | |
4687 | fattr->nlink = 2; | |
4688 | } | |
4689 | ||
56659e99 | 4690 | int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, |
7aaa0b3b | 4691 | struct nfs4_fs_locations *fs_locations, struct page *page) |
683b57b4 TM |
4692 | { |
4693 | struct nfs_server *server = NFS_SERVER(dir); | |
4694 | u32 bitmask[2] = { | |
361e624f | 4695 | [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS, |
683b57b4 TM |
4696 | }; |
4697 | struct nfs4_fs_locations_arg args = { | |
4698 | .dir_fh = NFS_FH(dir), | |
c228fd3a | 4699 | .name = name, |
683b57b4 TM |
4700 | .page = page, |
4701 | .bitmask = bitmask, | |
4702 | }; | |
22958463 BH |
4703 | struct nfs4_fs_locations_res res = { |
4704 | .fs_locations = fs_locations, | |
4705 | }; | |
683b57b4 TM |
4706 | struct rpc_message msg = { |
4707 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], | |
4708 | .rpc_argp = &args, | |
22958463 | 4709 | .rpc_resp = &res, |
683b57b4 TM |
4710 | }; |
4711 | int status; | |
4712 | ||
3110ff80 | 4713 | dprintk("%s: start\n", __func__); |
533eb461 AA |
4714 | |
4715 | /* Ask for the fileid of the absent filesystem if mounted_on_fileid | |
4716 | * is not supported */ | |
4717 | if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) | |
4718 | bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID; | |
4719 | else | |
4720 | bitmask[0] |= FATTR4_WORD0_FILEID; | |
4721 | ||
c228fd3a | 4722 | nfs_fattr_init(&fs_locations->fattr); |
683b57b4 | 4723 | fs_locations->server = server; |
830b8e33 | 4724 | fs_locations->nlocations = 0; |
7c513058 | 4725 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
3110ff80 | 4726 | dprintk("%s: returned status = %d\n", __func__, status); |
683b57b4 TM |
4727 | return status; |
4728 | } | |
4729 | ||
5a5ea0d4 BS |
4730 | static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) |
4731 | { | |
4732 | int status; | |
4733 | struct nfs4_secinfo_arg args = { | |
4734 | .dir_fh = NFS_FH(dir), | |
4735 | .name = name, | |
4736 | }; | |
4737 | struct nfs4_secinfo_res res = { | |
4738 | .flavors = flavors, | |
4739 | }; | |
4740 | struct rpc_message msg = { | |
4741 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO], | |
4742 | .rpc_argp = &args, | |
4743 | .rpc_resp = &res, | |
4744 | }; | |
4745 | ||
4746 | dprintk("NFS call secinfo %s\n", name->name); | |
4747 | status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0); | |
4748 | dprintk("NFS reply secinfo: %d\n", status); | |
4749 | return status; | |
4750 | } | |
4751 | ||
4752 | int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) | |
4753 | { | |
4754 | struct nfs4_exception exception = { }; | |
4755 | int err; | |
4756 | do { | |
4757 | err = nfs4_handle_exception(NFS_SERVER(dir), | |
4758 | _nfs4_proc_secinfo(dir, name, flavors), | |
4759 | &exception); | |
4760 | } while (exception.retry); | |
4761 | return err; | |
4762 | } | |
4763 | ||
557134a3 | 4764 | #ifdef CONFIG_NFS_V4_1 |
357f54d6 AA |
4765 | /* |
4766 | * Check the exchange flags returned by the server for invalid flags, having | |
4767 | * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or | |
4768 | * DS flags set. | |
4769 | */ | |
4770 | static int nfs4_check_cl_exchange_flags(u32 flags) | |
4771 | { | |
4772 | if (flags & ~EXCHGID4_FLAG_MASK_R) | |
4773 | goto out_inval; | |
4774 | if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) && | |
4775 | (flags & EXCHGID4_FLAG_USE_NON_PNFS)) | |
4776 | goto out_inval; | |
4777 | if (!(flags & (EXCHGID4_FLAG_MASK_PNFS))) | |
4778 | goto out_inval; | |
4779 | return NFS_OK; | |
4780 | out_inval: | |
4781 | return -NFS4ERR_INVAL; | |
4782 | } | |
4783 | ||
78fe0f41 WAA |
4784 | static bool |
4785 | nfs41_same_server_scope(struct server_scope *a, struct server_scope *b) | |
4786 | { | |
4787 | if (a->server_scope_sz == b->server_scope_sz && | |
4788 | memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) | |
4789 | return true; | |
4790 | ||
4791 | return false; | |
4792 | } | |
4793 | ||
99fe60d0 BH |
4794 | /* |
4795 | * nfs4_proc_exchange_id() | |
4796 | * | |
4797 | * Since the clientid has expired, all compounds using sessions | |
4798 | * associated with the stale clientid will be returning | |
4799 | * NFS4ERR_BADSESSION in the sequence operation, and will therefore | |
4800 | * be in some phase of session reset. | |
4801 | */ | |
4d643d1d | 4802 | int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) |
99fe60d0 BH |
4803 | { |
4804 | nfs4_verifier verifier; | |
4805 | struct nfs41_exchange_id_args args = { | |
4806 | .client = clp, | |
357f54d6 | 4807 | .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER, |
99fe60d0 BH |
4808 | }; |
4809 | struct nfs41_exchange_id_res res = { | |
4810 | .client = clp, | |
4811 | }; | |
4812 | int status; | |
4813 | struct rpc_message msg = { | |
4814 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], | |
4815 | .rpc_argp = &args, | |
4816 | .rpc_resp = &res, | |
4817 | .rpc_cred = cred, | |
4818 | }; | |
4819 | __be32 *p; | |
4820 | ||
4821 | dprintk("--> %s\n", __func__); | |
4822 | BUG_ON(clp == NULL); | |
a7b72103 | 4823 | |
99fe60d0 BH |
4824 | p = (u32 *)verifier.data; |
4825 | *p++ = htonl((u32)clp->cl_boot_time.tv_sec); | |
4826 | *p = htonl((u32)clp->cl_boot_time.tv_nsec); | |
4827 | args.verifier = &verifier; | |
4828 | ||
c7a360b0 AA |
4829 | args.id_len = scnprintf(args.id, sizeof(args.id), |
4830 | "%s/%s.%s/%u", | |
4831 | clp->cl_ipaddr, | |
4832 | init_utsname()->nodename, | |
4833 | init_utsname()->domainname, | |
4834 | clp->cl_rpcclient->cl_auth->au_flavor); | |
99fe60d0 | 4835 | |
78fe0f41 WAA |
4836 | res.server_scope = kzalloc(sizeof(struct server_scope), GFP_KERNEL); |
4837 | if (unlikely(!res.server_scope)) | |
4838 | return -ENOMEM; | |
4839 | ||
1bd714f2 | 4840 | status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
c7a360b0 AA |
4841 | if (!status) |
4842 | status = nfs4_check_cl_exchange_flags(clp->cl_exchange_flags); | |
78fe0f41 WAA |
4843 | |
4844 | if (!status) { | |
4845 | if (clp->server_scope && | |
4846 | !nfs41_same_server_scope(clp->server_scope, | |
4847 | res.server_scope)) { | |
4848 | dprintk("%s: server_scope mismatch detected\n", | |
4849 | __func__); | |
4850 | set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); | |
4851 | kfree(clp->server_scope); | |
4852 | clp->server_scope = NULL; | |
4853 | } | |
4854 | ||
4855 | if (!clp->server_scope) | |
4856 | clp->server_scope = res.server_scope; | |
4857 | else | |
4858 | kfree(res.server_scope); | |
4859 | } | |
4860 | ||
99fe60d0 BH |
4861 | dprintk("<-- %s status= %d\n", __func__, status); |
4862 | return status; | |
4863 | } | |
4864 | ||
2050f0cc AA |
4865 | struct nfs4_get_lease_time_data { |
4866 | struct nfs4_get_lease_time_args *args; | |
4867 | struct nfs4_get_lease_time_res *res; | |
4868 | struct nfs_client *clp; | |
4869 | }; | |
4870 | ||
4871 | static void nfs4_get_lease_time_prepare(struct rpc_task *task, | |
4872 | void *calldata) | |
4873 | { | |
4874 | int ret; | |
4875 | struct nfs4_get_lease_time_data *data = | |
4876 | (struct nfs4_get_lease_time_data *)calldata; | |
4877 | ||
4878 | dprintk("--> %s\n", __func__); | |
689cf5c1 | 4879 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
2050f0cc AA |
4880 | /* just setup sequence, do not trigger session recovery |
4881 | since we're invoked within one */ | |
4882 | ret = nfs41_setup_sequence(data->clp->cl_session, | |
689cf5c1 AB |
4883 | &data->args->la_seq_args, |
4884 | &data->res->lr_seq_res, 0, task); | |
2050f0cc AA |
4885 | |
4886 | BUG_ON(ret == -EAGAIN); | |
4887 | rpc_call_start(task); | |
4888 | dprintk("<-- %s\n", __func__); | |
4889 | } | |
4890 | ||
4891 | /* | |
4892 | * Called from nfs4_state_manager thread for session setup, so don't recover | |
4893 | * from sequence operation or clientid errors. | |
4894 | */ | |
4895 | static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) | |
4896 | { | |
4897 | struct nfs4_get_lease_time_data *data = | |
4898 | (struct nfs4_get_lease_time_data *)calldata; | |
4899 | ||
4900 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
4901 | if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) |
4902 | return; | |
2050f0cc AA |
4903 | switch (task->tk_status) { |
4904 | case -NFS4ERR_DELAY: | |
4905 | case -NFS4ERR_GRACE: | |
4906 | dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); | |
4907 | rpc_delay(task, NFS4_POLL_RETRY_MIN); | |
4908 | task->tk_status = 0; | |
a8a4ae3a AA |
4909 | /* fall through */ |
4910 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
0110ee15 | 4911 | nfs_restart_rpc(task, data->clp); |
2050f0cc AA |
4912 | return; |
4913 | } | |
2050f0cc AA |
4914 | dprintk("<-- %s\n", __func__); |
4915 | } | |
4916 | ||
4917 | struct rpc_call_ops nfs4_get_lease_time_ops = { | |
4918 | .rpc_call_prepare = nfs4_get_lease_time_prepare, | |
4919 | .rpc_call_done = nfs4_get_lease_time_done, | |
4920 | }; | |
4921 | ||
4922 | int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) | |
4923 | { | |
4924 | struct rpc_task *task; | |
4925 | struct nfs4_get_lease_time_args args; | |
4926 | struct nfs4_get_lease_time_res res = { | |
4927 | .lr_fsinfo = fsinfo, | |
4928 | }; | |
4929 | struct nfs4_get_lease_time_data data = { | |
4930 | .args = &args, | |
4931 | .res = &res, | |
4932 | .clp = clp, | |
4933 | }; | |
4934 | struct rpc_message msg = { | |
4935 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME], | |
4936 | .rpc_argp = &args, | |
4937 | .rpc_resp = &res, | |
4938 | }; | |
4939 | struct rpc_task_setup task_setup = { | |
4940 | .rpc_client = clp->cl_rpcclient, | |
4941 | .rpc_message = &msg, | |
4942 | .callback_ops = &nfs4_get_lease_time_ops, | |
1bd714f2 TM |
4943 | .callback_data = &data, |
4944 | .flags = RPC_TASK_TIMEOUT, | |
2050f0cc AA |
4945 | }; |
4946 | int status; | |
4947 | ||
2050f0cc AA |
4948 | dprintk("--> %s\n", __func__); |
4949 | task = rpc_run_task(&task_setup); | |
4950 | ||
4951 | if (IS_ERR(task)) | |
4952 | status = PTR_ERR(task); | |
4953 | else { | |
4954 | status = task->tk_status; | |
4955 | rpc_put_task(task); | |
4956 | } | |
4957 | dprintk("<-- %s return %d\n", __func__, status); | |
4958 | ||
4959 | return status; | |
4960 | } | |
4961 | ||
b73dafa7 RL |
4962 | /* |
4963 | * Reset a slot table | |
4964 | */ | |
104aeba4 AA |
4965 | static int nfs4_reset_slot_table(struct nfs4_slot_table *tbl, u32 max_reqs, |
4966 | int ivalue) | |
ac72b7b3 | 4967 | { |
104aeba4 | 4968 | struct nfs4_slot *new = NULL; |
b73dafa7 | 4969 | int i; |
ac72b7b3 AA |
4970 | int ret = 0; |
4971 | ||
104aeba4 AA |
4972 | dprintk("--> %s: max_reqs=%u, tbl->max_slots %d\n", __func__, |
4973 | max_reqs, tbl->max_slots); | |
ac72b7b3 | 4974 | |
104aeba4 AA |
4975 | /* Does the newly negotiated max_reqs match the existing slot table? */ |
4976 | if (max_reqs != tbl->max_slots) { | |
4977 | ret = -ENOMEM; | |
4978 | new = kmalloc(max_reqs * sizeof(struct nfs4_slot), | |
8535b2be | 4979 | GFP_NOFS); |
104aeba4 AA |
4980 | if (!new) |
4981 | goto out; | |
4982 | ret = 0; | |
4983 | kfree(tbl->slots); | |
ac72b7b3 AA |
4984 | } |
4985 | spin_lock(&tbl->slot_tbl_lock); | |
104aeba4 AA |
4986 | if (new) { |
4987 | tbl->slots = new; | |
4988 | tbl->max_slots = max_reqs; | |
4989 | } | |
4990 | for (i = 0; i < tbl->max_slots; ++i) | |
b73dafa7 | 4991 | tbl->slots[i].seq_nr = ivalue; |
ac72b7b3 AA |
4992 | spin_unlock(&tbl->slot_tbl_lock); |
4993 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
4994 | tbl, tbl->slots, tbl->max_slots); | |
4995 | out: | |
4996 | dprintk("<-- %s: return %d\n", __func__, ret); | |
4997 | return ret; | |
4998 | } | |
4999 | ||
b73dafa7 RL |
5000 | /* |
5001 | * Reset the forechannel and backchannel slot tables | |
5002 | */ | |
5003 | static int nfs4_reset_slot_tables(struct nfs4_session *session) | |
5004 | { | |
5005 | int status; | |
5006 | ||
5007 | status = nfs4_reset_slot_table(&session->fc_slot_table, | |
104aeba4 | 5008 | session->fc_attrs.max_reqs, 1); |
f8625a6a RL |
5009 | if (status) |
5010 | return status; | |
5011 | ||
5012 | status = nfs4_reset_slot_table(&session->bc_slot_table, | |
104aeba4 | 5013 | session->bc_attrs.max_reqs, 0); |
b73dafa7 RL |
5014 | return status; |
5015 | } | |
5016 | ||
f8625a6a RL |
5017 | /* Destroy the slot table */ |
5018 | static void nfs4_destroy_slot_tables(struct nfs4_session *session) | |
5019 | { | |
5020 | if (session->fc_slot_table.slots != NULL) { | |
5021 | kfree(session->fc_slot_table.slots); | |
5022 | session->fc_slot_table.slots = NULL; | |
5023 | } | |
5024 | if (session->bc_slot_table.slots != NULL) { | |
5025 | kfree(session->bc_slot_table.slots); | |
5026 | session->bc_slot_table.slots = NULL; | |
5027 | } | |
5028 | return; | |
5029 | } | |
5030 | ||
fc931582 AA |
5031 | /* |
5032 | * Initialize slot table | |
5033 | */ | |
050047ce RL |
5034 | static int nfs4_init_slot_table(struct nfs4_slot_table *tbl, |
5035 | int max_slots, int ivalue) | |
fc931582 | 5036 | { |
fc931582 AA |
5037 | struct nfs4_slot *slot; |
5038 | int ret = -ENOMEM; | |
5039 | ||
5040 | BUG_ON(max_slots > NFS4_MAX_SLOT_TABLE); | |
5041 | ||
050047ce | 5042 | dprintk("--> %s: max_reqs=%u\n", __func__, max_slots); |
fc931582 | 5043 | |
8535b2be | 5044 | slot = kcalloc(max_slots, sizeof(struct nfs4_slot), GFP_NOFS); |
fc931582 AA |
5045 | if (!slot) |
5046 | goto out; | |
fc931582 AA |
5047 | ret = 0; |
5048 | ||
5049 | spin_lock(&tbl->slot_tbl_lock); | |
fc931582 AA |
5050 | tbl->max_slots = max_slots; |
5051 | tbl->slots = slot; | |
5052 | tbl->highest_used_slotid = -1; /* no slot is currently used */ | |
5053 | spin_unlock(&tbl->slot_tbl_lock); | |
5054 | dprintk("%s: tbl=%p slots=%p max_slots=%d\n", __func__, | |
5055 | tbl, tbl->slots, tbl->max_slots); | |
5056 | out: | |
5057 | dprintk("<-- %s: return %d\n", __func__, ret); | |
5058 | return ret; | |
fc931582 AA |
5059 | } |
5060 | ||
050047ce RL |
5061 | /* |
5062 | * Initialize the forechannel and backchannel tables | |
5063 | */ | |
5064 | static int nfs4_init_slot_tables(struct nfs4_session *session) | |
5065 | { | |
f26468fb TM |
5066 | struct nfs4_slot_table *tbl; |
5067 | int status = 0; | |
050047ce | 5068 | |
f26468fb TM |
5069 | tbl = &session->fc_slot_table; |
5070 | if (tbl->slots == NULL) { | |
5071 | status = nfs4_init_slot_table(tbl, | |
5072 | session->fc_attrs.max_reqs, 1); | |
5073 | if (status) | |
5074 | return status; | |
5075 | } | |
050047ce | 5076 | |
f26468fb TM |
5077 | tbl = &session->bc_slot_table; |
5078 | if (tbl->slots == NULL) { | |
5079 | status = nfs4_init_slot_table(tbl, | |
5080 | session->bc_attrs.max_reqs, 0); | |
5081 | if (status) | |
5082 | nfs4_destroy_slot_tables(session); | |
5083 | } | |
f8625a6a RL |
5084 | |
5085 | return status; | |
557134a3 AA |
5086 | } |
5087 | ||
5088 | struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp) | |
5089 | { | |
5090 | struct nfs4_session *session; | |
5091 | struct nfs4_slot_table *tbl; | |
5092 | ||
8535b2be | 5093 | session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS); |
557134a3 AA |
5094 | if (!session) |
5095 | return NULL; | |
76db6d95 | 5096 | |
557134a3 | 5097 | tbl = &session->fc_slot_table; |
9dfdf404 | 5098 | tbl->highest_used_slotid = -1; |
557134a3 | 5099 | spin_lock_init(&tbl->slot_tbl_lock); |
689cf5c1 | 5100 | rpc_init_priority_wait_queue(&tbl->slot_tbl_waitq, "ForeChannel Slot table"); |
42acd021 | 5101 | init_completion(&tbl->complete); |
f8625a6a RL |
5102 | |
5103 | tbl = &session->bc_slot_table; | |
9dfdf404 | 5104 | tbl->highest_used_slotid = -1; |
f8625a6a RL |
5105 | spin_lock_init(&tbl->slot_tbl_lock); |
5106 | rpc_init_wait_queue(&tbl->slot_tbl_waitq, "BackChannel Slot table"); | |
42acd021 | 5107 | init_completion(&tbl->complete); |
f8625a6a | 5108 | |
1055d76d TM |
5109 | session->session_state = 1<<NFS4_SESSION_INITING; |
5110 | ||
557134a3 AA |
5111 | session->clp = clp; |
5112 | return session; | |
5113 | } | |
5114 | ||
5115 | void nfs4_destroy_session(struct nfs4_session *session) | |
5116 | { | |
5a0ffe54 AA |
5117 | nfs4_proc_destroy_session(session); |
5118 | dprintk("%s Destroy backchannel for xprt %p\n", | |
5119 | __func__, session->clp->cl_rpcclient->cl_xprt); | |
5120 | xprt_destroy_backchannel(session->clp->cl_rpcclient->cl_xprt, | |
5121 | NFS41_BC_MIN_CALLBACKS); | |
f8625a6a | 5122 | nfs4_destroy_slot_tables(session); |
557134a3 AA |
5123 | kfree(session); |
5124 | } | |
5125 | ||
fc931582 AA |
5126 | /* |
5127 | * Initialize the values to be used by the client in CREATE_SESSION | |
5128 | * If nfs4_init_session set the fore channel request and response sizes, | |
5129 | * use them. | |
5130 | * | |
5131 | * Set the back channel max_resp_sz_cached to zero to force the client to | |
5132 | * always set csa_cachethis to FALSE because the current implementation | |
5133 | * of the back channel DRC only supports caching the CB_SEQUENCE operation. | |
5134 | */ | |
5135 | static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args) | |
5136 | { | |
5137 | struct nfs4_session *session = args->client->cl_session; | |
5138 | unsigned int mxrqst_sz = session->fc_attrs.max_rqst_sz, | |
5139 | mxresp_sz = session->fc_attrs.max_resp_sz; | |
5140 | ||
5141 | if (mxrqst_sz == 0) | |
5142 | mxrqst_sz = NFS_MAX_FILE_IO_SIZE; | |
5143 | if (mxresp_sz == 0) | |
5144 | mxresp_sz = NFS_MAX_FILE_IO_SIZE; | |
5145 | /* Fore channel attributes */ | |
fc931582 AA |
5146 | args->fc_attrs.max_rqst_sz = mxrqst_sz; |
5147 | args->fc_attrs.max_resp_sz = mxresp_sz; | |
fc931582 AA |
5148 | args->fc_attrs.max_ops = NFS4_MAX_OPS; |
5149 | args->fc_attrs.max_reqs = session->clp->cl_rpcclient->cl_xprt->max_reqs; | |
5150 | ||
5151 | dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u " | |
8e0d46e1 | 5152 | "max_ops=%u max_reqs=%u\n", |
fc931582 AA |
5153 | __func__, |
5154 | args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz, | |
8e0d46e1 | 5155 | args->fc_attrs.max_ops, args->fc_attrs.max_reqs); |
fc931582 AA |
5156 | |
5157 | /* Back channel attributes */ | |
fc931582 AA |
5158 | args->bc_attrs.max_rqst_sz = PAGE_SIZE; |
5159 | args->bc_attrs.max_resp_sz = PAGE_SIZE; | |
5160 | args->bc_attrs.max_resp_sz_cached = 0; | |
5161 | args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; | |
5162 | args->bc_attrs.max_reqs = 1; | |
5163 | ||
5164 | dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " | |
5165 | "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", | |
5166 | __func__, | |
5167 | args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz, | |
5168 | args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops, | |
5169 | args->bc_attrs.max_reqs); | |
5170 | } | |
5171 | ||
43c2e885 | 5172 | static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
8d35301d | 5173 | { |
43c2e885 BF |
5174 | struct nfs4_channel_attrs *sent = &args->fc_attrs; |
5175 | struct nfs4_channel_attrs *rcvd = &session->fc_attrs; | |
5176 | ||
43c2e885 BF |
5177 | if (rcvd->max_resp_sz > sent->max_resp_sz) |
5178 | return -EINVAL; | |
5179 | /* | |
5180 | * Our requested max_ops is the minimum we need; we're not | |
5181 | * prepared to break up compounds into smaller pieces than that. | |
5182 | * So, no point even trying to continue if the server won't | |
5183 | * cooperate: | |
5184 | */ | |
5185 | if (rcvd->max_ops < sent->max_ops) | |
5186 | return -EINVAL; | |
5187 | if (rcvd->max_reqs == 0) | |
5188 | return -EINVAL; | |
5189 | return 0; | |
8d35301d AA |
5190 | } |
5191 | ||
43c2e885 BF |
5192 | static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session) |
5193 | { | |
5194 | struct nfs4_channel_attrs *sent = &args->bc_attrs; | |
5195 | struct nfs4_channel_attrs *rcvd = &session->bc_attrs; | |
8d35301d | 5196 | |
43c2e885 BF |
5197 | if (rcvd->max_rqst_sz > sent->max_rqst_sz) |
5198 | return -EINVAL; | |
5199 | if (rcvd->max_resp_sz < sent->max_resp_sz) | |
5200 | return -EINVAL; | |
5201 | if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) | |
5202 | return -EINVAL; | |
5203 | /* These would render the backchannel useless: */ | |
5204 | if (rcvd->max_ops == 0) | |
5205 | return -EINVAL; | |
5206 | if (rcvd->max_reqs == 0) | |
5207 | return -EINVAL; | |
5208 | return 0; | |
5209 | } | |
8d35301d | 5210 | |
8d35301d AA |
5211 | static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args, |
5212 | struct nfs4_session *session) | |
5213 | { | |
43c2e885 | 5214 | int ret; |
8d35301d | 5215 | |
43c2e885 BF |
5216 | ret = nfs4_verify_fore_channel_attrs(args, session); |
5217 | if (ret) | |
5218 | return ret; | |
5219 | return nfs4_verify_back_channel_attrs(args, session); | |
8d35301d AA |
5220 | } |
5221 | ||
fc931582 AA |
5222 | static int _nfs4_proc_create_session(struct nfs_client *clp) |
5223 | { | |
5224 | struct nfs4_session *session = clp->cl_session; | |
5225 | struct nfs41_create_session_args args = { | |
5226 | .client = clp, | |
5227 | .cb_program = NFS4_CALLBACK, | |
5228 | }; | |
5229 | struct nfs41_create_session_res res = { | |
5230 | .client = clp, | |
5231 | }; | |
5232 | struct rpc_message msg = { | |
5233 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION], | |
5234 | .rpc_argp = &args, | |
5235 | .rpc_resp = &res, | |
5236 | }; | |
5237 | int status; | |
5238 | ||
5239 | nfs4_init_channel_attrs(&args); | |
0f91421e | 5240 | args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); |
fc931582 | 5241 | |
1bd714f2 | 5242 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
fc931582 | 5243 | |
8d35301d AA |
5244 | if (!status) |
5245 | /* Verify the session's negotiated channel_attrs values */ | |
5246 | status = nfs4_verify_channel_attrs(&args, session); | |
fc931582 AA |
5247 | if (!status) { |
5248 | /* Increment the clientid slot sequence id */ | |
5249 | clp->cl_seqid++; | |
5250 | } | |
5251 | ||
5252 | return status; | |
5253 | } | |
5254 | ||
5255 | /* | |
5256 | * Issues a CREATE_SESSION operation to the server. | |
5257 | * It is the responsibility of the caller to verify the session is | |
5258 | * expired before calling this routine. | |
5259 | */ | |
f26468fb | 5260 | int nfs4_proc_create_session(struct nfs_client *clp) |
fc931582 AA |
5261 | { |
5262 | int status; | |
5263 | unsigned *ptr; | |
fc931582 AA |
5264 | struct nfs4_session *session = clp->cl_session; |
5265 | ||
5266 | dprintk("--> %s clp=%p session=%p\n", __func__, clp, session); | |
5267 | ||
fd954ae1 | 5268 | status = _nfs4_proc_create_session(clp); |
fc931582 AA |
5269 | if (status) |
5270 | goto out; | |
5271 | ||
f26468fb TM |
5272 | /* Init and reset the fore channel */ |
5273 | status = nfs4_init_slot_tables(session); | |
5274 | dprintk("slot table initialization returned %d\n", status); | |
5275 | if (status) | |
5276 | goto out; | |
5277 | status = nfs4_reset_slot_tables(session); | |
5278 | dprintk("slot table reset returned %d\n", status); | |
fc931582 AA |
5279 | if (status) |
5280 | goto out; | |
5281 | ||
5282 | ptr = (unsigned *)&session->sess_id.data[0]; | |
5283 | dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__, | |
5284 | clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]); | |
fc931582 AA |
5285 | out: |
5286 | dprintk("<-- %s\n", __func__); | |
5287 | return status; | |
5288 | } | |
5289 | ||
0f3e66c6 AA |
5290 | /* |
5291 | * Issue the over-the-wire RPC DESTROY_SESSION. | |
5292 | * The caller must serialize access to this routine. | |
5293 | */ | |
5294 | int nfs4_proc_destroy_session(struct nfs4_session *session) | |
5295 | { | |
5296 | int status = 0; | |
5297 | struct rpc_message msg; | |
5298 | ||
5299 | dprintk("--> nfs4_proc_destroy_session\n"); | |
5300 | ||
5301 | /* session is still being setup */ | |
5302 | if (session->clp->cl_cons_state != NFS_CS_READY) | |
5303 | return status; | |
5304 | ||
5305 | msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION]; | |
5306 | msg.rpc_argp = session; | |
5307 | msg.rpc_resp = NULL; | |
5308 | msg.rpc_cred = NULL; | |
1bd714f2 | 5309 | status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); |
0f3e66c6 AA |
5310 | |
5311 | if (status) | |
5312 | printk(KERN_WARNING | |
5313 | "Got error %d from the server on DESTROY_SESSION. " | |
5314 | "Session has been destroyed regardless...\n", status); | |
5315 | ||
5316 | dprintk("<-- nfs4_proc_destroy_session\n"); | |
5317 | return status; | |
5318 | } | |
5319 | ||
fccba804 TM |
5320 | int nfs4_init_session(struct nfs_server *server) |
5321 | { | |
5322 | struct nfs_client *clp = server->nfs_client; | |
2449ea2e | 5323 | struct nfs4_session *session; |
68bf05ef | 5324 | unsigned int rsize, wsize; |
fccba804 TM |
5325 | int ret; |
5326 | ||
5327 | if (!nfs4_has_session(clp)) | |
5328 | return 0; | |
5329 | ||
1055d76d TM |
5330 | session = clp->cl_session; |
5331 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5332 | return 0; | |
5333 | ||
68bf05ef AA |
5334 | rsize = server->rsize; |
5335 | if (rsize == 0) | |
5336 | rsize = NFS_MAX_FILE_IO_SIZE; | |
5337 | wsize = server->wsize; | |
5338 | if (wsize == 0) | |
5339 | wsize = NFS_MAX_FILE_IO_SIZE; | |
5340 | ||
68bf05ef AA |
5341 | session->fc_attrs.max_rqst_sz = wsize + nfs41_maxwrite_overhead; |
5342 | session->fc_attrs.max_resp_sz = rsize + nfs41_maxread_overhead; | |
2449ea2e | 5343 | |
fccba804 TM |
5344 | ret = nfs4_recover_expired_lease(server); |
5345 | if (!ret) | |
5346 | ret = nfs4_check_client_ready(clp); | |
5347 | return ret; | |
5348 | } | |
5349 | ||
d83217c1 AA |
5350 | int nfs4_init_ds_session(struct nfs_client *clp) |
5351 | { | |
5352 | struct nfs4_session *session = clp->cl_session; | |
5353 | int ret; | |
5354 | ||
5355 | if (!test_and_clear_bit(NFS4_SESSION_INITING, &session->session_state)) | |
5356 | return 0; | |
5357 | ||
5358 | ret = nfs4_client_recover_expired_lease(clp); | |
5359 | if (!ret) | |
5360 | /* Test for the DS role */ | |
5361 | if (!is_ds_client(clp)) | |
5362 | ret = -ENODEV; | |
5363 | if (!ret) | |
5364 | ret = nfs4_check_client_ready(clp); | |
5365 | return ret; | |
5366 | ||
5367 | } | |
5368 | EXPORT_SYMBOL_GPL(nfs4_init_ds_session); | |
5369 | ||
5370 | ||
fc01cea9 AA |
5371 | /* |
5372 | * Renew the cl_session lease. | |
5373 | */ | |
d5f8d3fe TM |
5374 | struct nfs4_sequence_data { |
5375 | struct nfs_client *clp; | |
5376 | struct nfs4_sequence_args args; | |
5377 | struct nfs4_sequence_res res; | |
5378 | }; | |
5379 | ||
dc96aef9 AB |
5380 | static void nfs41_sequence_release(void *data) |
5381 | { | |
d5f8d3fe TM |
5382 | struct nfs4_sequence_data *calldata = data; |
5383 | struct nfs_client *clp = calldata->clp; | |
dc96aef9 | 5384 | |
7135840f AB |
5385 | if (atomic_read(&clp->cl_count) > 1) |
5386 | nfs4_schedule_state_renewal(clp); | |
5387 | nfs_put_client(clp); | |
d5f8d3fe | 5388 | kfree(calldata); |
dc96aef9 AB |
5389 | } |
5390 | ||
aa5190d0 TM |
5391 | static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5392 | { | |
5393 | switch(task->tk_status) { | |
5394 | case -NFS4ERR_DELAY: | |
aa5190d0 TM |
5395 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
5396 | return -EAGAIN; | |
5397 | default: | |
0400a6b0 | 5398 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5399 | } |
5400 | return 0; | |
5401 | } | |
5402 | ||
dc96aef9 | 5403 | static void nfs41_sequence_call_done(struct rpc_task *task, void *data) |
fc01cea9 | 5404 | { |
d5f8d3fe TM |
5405 | struct nfs4_sequence_data *calldata = data; |
5406 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 | 5407 | |
14516c3a TM |
5408 | if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp)) |
5409 | return; | |
fc01cea9 AA |
5410 | |
5411 | if (task->tk_status < 0) { | |
5412 | dprintk("%s ERROR %d\n", __func__, task->tk_status); | |
7135840f AB |
5413 | if (atomic_read(&clp->cl_count) == 1) |
5414 | goto out; | |
fc01cea9 | 5415 | |
aa5190d0 TM |
5416 | if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) { |
5417 | rpc_restart_call_prepare(task); | |
fc01cea9 AA |
5418 | return; |
5419 | } | |
5420 | } | |
fc01cea9 | 5421 | dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred); |
7135840f | 5422 | out: |
fc01cea9 AA |
5423 | dprintk("<-- %s\n", __func__); |
5424 | } | |
5425 | ||
5426 | static void nfs41_sequence_prepare(struct rpc_task *task, void *data) | |
5427 | { | |
d5f8d3fe TM |
5428 | struct nfs4_sequence_data *calldata = data; |
5429 | struct nfs_client *clp = calldata->clp; | |
fc01cea9 AA |
5430 | struct nfs4_sequence_args *args; |
5431 | struct nfs4_sequence_res *res; | |
5432 | ||
fc01cea9 AA |
5433 | args = task->tk_msg.rpc_argp; |
5434 | res = task->tk_msg.rpc_resp; | |
5435 | ||
035168ab | 5436 | if (nfs41_setup_sequence(clp->cl_session, args, res, 0, task)) |
fc01cea9 AA |
5437 | return; |
5438 | rpc_call_start(task); | |
5439 | } | |
5440 | ||
5441 | static const struct rpc_call_ops nfs41_sequence_ops = { | |
5442 | .rpc_call_done = nfs41_sequence_call_done, | |
5443 | .rpc_call_prepare = nfs41_sequence_prepare, | |
dc96aef9 | 5444 | .rpc_release = nfs41_sequence_release, |
fc01cea9 AA |
5445 | }; |
5446 | ||
71ac6da9 | 5447 | static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) |
fc01cea9 | 5448 | { |
d5f8d3fe | 5449 | struct nfs4_sequence_data *calldata; |
fc01cea9 AA |
5450 | struct rpc_message msg = { |
5451 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE], | |
5452 | .rpc_cred = cred, | |
5453 | }; | |
71ac6da9 TM |
5454 | struct rpc_task_setup task_setup_data = { |
5455 | .rpc_client = clp->cl_rpcclient, | |
5456 | .rpc_message = &msg, | |
5457 | .callback_ops = &nfs41_sequence_ops, | |
5458 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFT, | |
5459 | }; | |
fc01cea9 | 5460 | |
7135840f | 5461 | if (!atomic_inc_not_zero(&clp->cl_count)) |
71ac6da9 | 5462 | return ERR_PTR(-EIO); |
dfb4f309 | 5463 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
d5f8d3fe | 5464 | if (calldata == NULL) { |
7135840f | 5465 | nfs_put_client(clp); |
71ac6da9 | 5466 | return ERR_PTR(-ENOMEM); |
fc01cea9 | 5467 | } |
d5f8d3fe TM |
5468 | msg.rpc_argp = &calldata->args; |
5469 | msg.rpc_resp = &calldata->res; | |
5470 | calldata->clp = clp; | |
71ac6da9 | 5471 | task_setup_data.callback_data = calldata; |
fc01cea9 | 5472 | |
71ac6da9 TM |
5473 | return rpc_run_task(&task_setup_data); |
5474 | } | |
5475 | ||
5476 | static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5477 | { | |
5478 | struct rpc_task *task; | |
5479 | int ret = 0; | |
5480 | ||
5481 | task = _nfs41_proc_sequence(clp, cred); | |
5482 | if (IS_ERR(task)) | |
5483 | ret = PTR_ERR(task); | |
5484 | else | |
bf294b41 | 5485 | rpc_put_task_async(task); |
71ac6da9 TM |
5486 | dprintk("<-- %s status=%d\n", __func__, ret); |
5487 | return ret; | |
5488 | } | |
5489 | ||
5490 | static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred) | |
5491 | { | |
5492 | struct rpc_task *task; | |
5493 | int ret; | |
5494 | ||
5495 | task = _nfs41_proc_sequence(clp, cred); | |
5496 | if (IS_ERR(task)) { | |
5497 | ret = PTR_ERR(task); | |
5498 | goto out; | |
5499 | } | |
5500 | ret = rpc_wait_for_completion_task(task); | |
b4410c2f TM |
5501 | if (!ret) { |
5502 | struct nfs4_sequence_res *res = task->tk_msg.rpc_resp; | |
5503 | ||
5504 | if (task->tk_status == 0) | |
5505 | nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); | |
71ac6da9 | 5506 | ret = task->tk_status; |
b4410c2f | 5507 | } |
71ac6da9 TM |
5508 | rpc_put_task(task); |
5509 | out: | |
5510 | dprintk("<-- %s status=%d\n", __func__, ret); | |
5511 | return ret; | |
fc01cea9 AA |
5512 | } |
5513 | ||
fce5c838 RL |
5514 | struct nfs4_reclaim_complete_data { |
5515 | struct nfs_client *clp; | |
5516 | struct nfs41_reclaim_complete_args arg; | |
5517 | struct nfs41_reclaim_complete_res res; | |
5518 | }; | |
5519 | ||
5520 | static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) | |
5521 | { | |
5522 | struct nfs4_reclaim_complete_data *calldata = data; | |
5523 | ||
b257957e | 5524 | rpc_task_set_priority(task, RPC_PRIORITY_PRIVILEGED); |
035168ab TM |
5525 | if (nfs41_setup_sequence(calldata->clp->cl_session, |
5526 | &calldata->arg.seq_args, | |
fce5c838 RL |
5527 | &calldata->res.seq_res, 0, task)) |
5528 | return; | |
5529 | ||
5530 | rpc_call_start(task); | |
5531 | } | |
5532 | ||
aa5190d0 TM |
5533 | static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp) |
5534 | { | |
5535 | switch(task->tk_status) { | |
5536 | case 0: | |
5537 | case -NFS4ERR_COMPLETE_ALREADY: | |
5538 | case -NFS4ERR_WRONG_CRED: /* What to do here? */ | |
5539 | break; | |
5540 | case -NFS4ERR_DELAY: | |
aa5190d0 | 5541 | rpc_delay(task, NFS4_POLL_RETRY_MAX); |
a8a4ae3a AA |
5542 | /* fall through */ |
5543 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
aa5190d0 TM |
5544 | return -EAGAIN; |
5545 | default: | |
0400a6b0 | 5546 | nfs4_schedule_lease_recovery(clp); |
aa5190d0 TM |
5547 | } |
5548 | return 0; | |
5549 | } | |
5550 | ||
fce5c838 RL |
5551 | static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data) |
5552 | { | |
5553 | struct nfs4_reclaim_complete_data *calldata = data; | |
5554 | struct nfs_client *clp = calldata->clp; | |
5555 | struct nfs4_sequence_res *res = &calldata->res.seq_res; | |
5556 | ||
5557 | dprintk("--> %s\n", __func__); | |
14516c3a TM |
5558 | if (!nfs41_sequence_done(task, res)) |
5559 | return; | |
fce5c838 | 5560 | |
aa5190d0 TM |
5561 | if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) { |
5562 | rpc_restart_call_prepare(task); | |
5563 | return; | |
5564 | } | |
fce5c838 RL |
5565 | dprintk("<-- %s\n", __func__); |
5566 | } | |
5567 | ||
5568 | static void nfs4_free_reclaim_complete_data(void *data) | |
5569 | { | |
5570 | struct nfs4_reclaim_complete_data *calldata = data; | |
5571 | ||
5572 | kfree(calldata); | |
5573 | } | |
5574 | ||
5575 | static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = { | |
5576 | .rpc_call_prepare = nfs4_reclaim_complete_prepare, | |
5577 | .rpc_call_done = nfs4_reclaim_complete_done, | |
5578 | .rpc_release = nfs4_free_reclaim_complete_data, | |
5579 | }; | |
5580 | ||
5581 | /* | |
5582 | * Issue a global reclaim complete. | |
5583 | */ | |
5584 | static int nfs41_proc_reclaim_complete(struct nfs_client *clp) | |
5585 | { | |
5586 | struct nfs4_reclaim_complete_data *calldata; | |
5587 | struct rpc_task *task; | |
5588 | struct rpc_message msg = { | |
5589 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE], | |
5590 | }; | |
5591 | struct rpc_task_setup task_setup_data = { | |
5592 | .rpc_client = clp->cl_rpcclient, | |
5593 | .rpc_message = &msg, | |
5594 | .callback_ops = &nfs4_reclaim_complete_call_ops, | |
5595 | .flags = RPC_TASK_ASYNC, | |
5596 | }; | |
5597 | int status = -ENOMEM; | |
5598 | ||
5599 | dprintk("--> %s\n", __func__); | |
8535b2be | 5600 | calldata = kzalloc(sizeof(*calldata), GFP_NOFS); |
fce5c838 RL |
5601 | if (calldata == NULL) |
5602 | goto out; | |
5603 | calldata->clp = clp; | |
5604 | calldata->arg.one_fs = 0; | |
fce5c838 RL |
5605 | |
5606 | msg.rpc_argp = &calldata->arg; | |
5607 | msg.rpc_resp = &calldata->res; | |
5608 | task_setup_data.callback_data = calldata; | |
5609 | task = rpc_run_task(&task_setup_data); | |
acf82b85 | 5610 | if (IS_ERR(task)) { |
fce5c838 | 5611 | status = PTR_ERR(task); |
acf82b85 DC |
5612 | goto out; |
5613 | } | |
c34c32ea AA |
5614 | status = nfs4_wait_for_completion_rpc_task(task); |
5615 | if (status == 0) | |
5616 | status = task->tk_status; | |
fce5c838 | 5617 | rpc_put_task(task); |
acf82b85 | 5618 | return 0; |
fce5c838 RL |
5619 | out: |
5620 | dprintk("<-- %s status=%d\n", __func__, status); | |
5621 | return status; | |
5622 | } | |
b1f69b75 AA |
5623 | |
5624 | static void | |
5625 | nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) | |
5626 | { | |
5627 | struct nfs4_layoutget *lgp = calldata; | |
c31663d4 | 5628 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); |
b1f69b75 AA |
5629 | |
5630 | dprintk("--> %s\n", __func__); | |
c31663d4 FI |
5631 | /* Note the is a race here, where a CB_LAYOUTRECALL can come in |
5632 | * right now covering the LAYOUTGET we are about to send. | |
5633 | * However, that is not so catastrophic, and there seems | |
5634 | * to be no way to prevent it completely. | |
5635 | */ | |
b1f69b75 AA |
5636 | if (nfs4_setup_sequence(server, &lgp->args.seq_args, |
5637 | &lgp->res.seq_res, 0, task)) | |
5638 | return; | |
cf7d63f1 FI |
5639 | if (pnfs_choose_layoutget_stateid(&lgp->args.stateid, |
5640 | NFS_I(lgp->args.inode)->layout, | |
5641 | lgp->args.ctx->state)) { | |
5642 | rpc_exit(task, NFS4_OK); | |
5643 | return; | |
5644 | } | |
b1f69b75 AA |
5645 | rpc_call_start(task); |
5646 | } | |
5647 | ||
5648 | static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) | |
5649 | { | |
5650 | struct nfs4_layoutget *lgp = calldata; | |
5651 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5652 | ||
5653 | dprintk("--> %s\n", __func__); | |
5654 | ||
5655 | if (!nfs4_sequence_done(task, &lgp->res.seq_res)) | |
5656 | return; | |
5657 | ||
5658 | switch (task->tk_status) { | |
5659 | case 0: | |
5660 | break; | |
5661 | case -NFS4ERR_LAYOUTTRYLATER: | |
5662 | case -NFS4ERR_RECALLCONFLICT: | |
5663 | task->tk_status = -NFS4ERR_DELAY; | |
5664 | /* Fall through */ | |
5665 | default: | |
5666 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
5667 | rpc_restart_call_prepare(task); | |
5668 | return; | |
5669 | } | |
5670 | } | |
b1f69b75 AA |
5671 | dprintk("<-- %s\n", __func__); |
5672 | } | |
5673 | ||
5674 | static void nfs4_layoutget_release(void *calldata) | |
5675 | { | |
5676 | struct nfs4_layoutget *lgp = calldata; | |
5677 | ||
5678 | dprintk("--> %s\n", __func__); | |
b1f69b75 AA |
5679 | put_nfs_open_context(lgp->args.ctx); |
5680 | kfree(calldata); | |
5681 | dprintk("<-- %s\n", __func__); | |
5682 | } | |
5683 | ||
5684 | static const struct rpc_call_ops nfs4_layoutget_call_ops = { | |
5685 | .rpc_call_prepare = nfs4_layoutget_prepare, | |
5686 | .rpc_call_done = nfs4_layoutget_done, | |
5687 | .rpc_release = nfs4_layoutget_release, | |
5688 | }; | |
5689 | ||
5690 | int nfs4_proc_layoutget(struct nfs4_layoutget *lgp) | |
5691 | { | |
5692 | struct nfs_server *server = NFS_SERVER(lgp->args.inode); | |
5693 | struct rpc_task *task; | |
5694 | struct rpc_message msg = { | |
5695 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET], | |
5696 | .rpc_argp = &lgp->args, | |
5697 | .rpc_resp = &lgp->res, | |
5698 | }; | |
5699 | struct rpc_task_setup task_setup_data = { | |
5700 | .rpc_client = server->client, | |
5701 | .rpc_message = &msg, | |
5702 | .callback_ops = &nfs4_layoutget_call_ops, | |
5703 | .callback_data = lgp, | |
5704 | .flags = RPC_TASK_ASYNC, | |
5705 | }; | |
5706 | int status = 0; | |
5707 | ||
5708 | dprintk("--> %s\n", __func__); | |
5709 | ||
35124a09 | 5710 | lgp->res.layoutp = &lgp->args.layout; |
b1f69b75 AA |
5711 | lgp->res.seq_res.sr_slot = NULL; |
5712 | task = rpc_run_task(&task_setup_data); | |
5713 | if (IS_ERR(task)) | |
5714 | return PTR_ERR(task); | |
5715 | status = nfs4_wait_for_completion_rpc_task(task); | |
c31663d4 FI |
5716 | if (status == 0) |
5717 | status = task->tk_status; | |
5718 | if (status == 0) | |
5719 | status = pnfs_layout_process(lgp); | |
b1f69b75 AA |
5720 | rpc_put_task(task); |
5721 | dprintk("<-- %s status=%d\n", __func__, status); | |
5722 | return status; | |
5723 | } | |
5724 | ||
cbe82603 BH |
5725 | static void |
5726 | nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) | |
5727 | { | |
5728 | struct nfs4_layoutreturn *lrp = calldata; | |
5729 | ||
5730 | dprintk("--> %s\n", __func__); | |
5731 | if (nfs41_setup_sequence(lrp->clp->cl_session, &lrp->args.seq_args, | |
5732 | &lrp->res.seq_res, 0, task)) | |
5733 | return; | |
5734 | rpc_call_start(task); | |
5735 | } | |
5736 | ||
5737 | static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) | |
5738 | { | |
5739 | struct nfs4_layoutreturn *lrp = calldata; | |
5740 | struct nfs_server *server; | |
a2e1d4f2 | 5741 | struct pnfs_layout_hdr *lo = NFS_I(lrp->args.inode)->layout; |
cbe82603 BH |
5742 | |
5743 | dprintk("--> %s\n", __func__); | |
5744 | ||
5745 | if (!nfs4_sequence_done(task, &lrp->res.seq_res)) | |
5746 | return; | |
5747 | ||
5748 | server = NFS_SERVER(lrp->args.inode); | |
5749 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
5750 | nfs_restart_rpc(task, lrp->clp); | |
5751 | return; | |
5752 | } | |
a2e1d4f2 | 5753 | spin_lock(&lo->plh_inode->i_lock); |
cbe82603 | 5754 | if (task->tk_status == 0) { |
cbe82603 | 5755 | if (lrp->res.lrs_present) { |
cbe82603 | 5756 | pnfs_set_layout_stateid(lo, &lrp->res.stateid, true); |
cbe82603 BH |
5757 | } else |
5758 | BUG_ON(!list_empty(&lo->plh_segs)); | |
5759 | } | |
a2e1d4f2 FI |
5760 | lo->plh_block_lgets--; |
5761 | spin_unlock(&lo->plh_inode->i_lock); | |
cbe82603 BH |
5762 | dprintk("<-- %s\n", __func__); |
5763 | } | |
5764 | ||
5765 | static void nfs4_layoutreturn_release(void *calldata) | |
5766 | { | |
5767 | struct nfs4_layoutreturn *lrp = calldata; | |
5768 | ||
5769 | dprintk("--> %s\n", __func__); | |
5770 | put_layout_hdr(NFS_I(lrp->args.inode)->layout); | |
5771 | kfree(calldata); | |
5772 | dprintk("<-- %s\n", __func__); | |
5773 | } | |
5774 | ||
5775 | static const struct rpc_call_ops nfs4_layoutreturn_call_ops = { | |
5776 | .rpc_call_prepare = nfs4_layoutreturn_prepare, | |
5777 | .rpc_call_done = nfs4_layoutreturn_done, | |
5778 | .rpc_release = nfs4_layoutreturn_release, | |
5779 | }; | |
5780 | ||
5781 | int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) | |
5782 | { | |
5783 | struct rpc_task *task; | |
5784 | struct rpc_message msg = { | |
5785 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN], | |
5786 | .rpc_argp = &lrp->args, | |
5787 | .rpc_resp = &lrp->res, | |
5788 | }; | |
5789 | struct rpc_task_setup task_setup_data = { | |
5790 | .rpc_client = lrp->clp->cl_rpcclient, | |
5791 | .rpc_message = &msg, | |
5792 | .callback_ops = &nfs4_layoutreturn_call_ops, | |
5793 | .callback_data = lrp, | |
5794 | }; | |
5795 | int status; | |
5796 | ||
5797 | dprintk("--> %s\n", __func__); | |
5798 | task = rpc_run_task(&task_setup_data); | |
5799 | if (IS_ERR(task)) | |
5800 | return PTR_ERR(task); | |
5801 | status = task->tk_status; | |
5802 | dprintk("<-- %s status=%d\n", __func__, status); | |
5803 | rpc_put_task(task); | |
5804 | return status; | |
5805 | } | |
5806 | ||
b1f69b75 AA |
5807 | static int |
5808 | _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
5809 | { | |
5810 | struct nfs4_getdeviceinfo_args args = { | |
5811 | .pdev = pdev, | |
5812 | }; | |
5813 | struct nfs4_getdeviceinfo_res res = { | |
5814 | .pdev = pdev, | |
5815 | }; | |
5816 | struct rpc_message msg = { | |
5817 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO], | |
5818 | .rpc_argp = &args, | |
5819 | .rpc_resp = &res, | |
5820 | }; | |
5821 | int status; | |
5822 | ||
5823 | dprintk("--> %s\n", __func__); | |
7c513058 | 5824 | status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); |
b1f69b75 AA |
5825 | dprintk("<-- %s status=%d\n", __func__, status); |
5826 | ||
5827 | return status; | |
5828 | } | |
5829 | ||
5830 | int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) | |
5831 | { | |
5832 | struct nfs4_exception exception = { }; | |
5833 | int err; | |
5834 | ||
5835 | do { | |
5836 | err = nfs4_handle_exception(server, | |
5837 | _nfs4_proc_getdeviceinfo(server, pdev), | |
5838 | &exception); | |
5839 | } while (exception.retry); | |
5840 | return err; | |
5841 | } | |
5842 | EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo); | |
5843 | ||
863a3c6c AA |
5844 | static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) |
5845 | { | |
5846 | struct nfs4_layoutcommit_data *data = calldata; | |
5847 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
5848 | ||
5849 | if (nfs4_setup_sequence(server, &data->args.seq_args, | |
5850 | &data->res.seq_res, 1, task)) | |
5851 | return; | |
5852 | rpc_call_start(task); | |
5853 | } | |
5854 | ||
5855 | static void | |
5856 | nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) | |
5857 | { | |
5858 | struct nfs4_layoutcommit_data *data = calldata; | |
5859 | struct nfs_server *server = NFS_SERVER(data->args.inode); | |
5860 | ||
5861 | if (!nfs4_sequence_done(task, &data->res.seq_res)) | |
5862 | return; | |
5863 | ||
5864 | switch (task->tk_status) { /* Just ignore these failures */ | |
5865 | case NFS4ERR_DELEG_REVOKED: /* layout was recalled */ | |
5866 | case NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */ | |
5867 | case NFS4ERR_BADLAYOUT: /* no layout */ | |
5868 | case NFS4ERR_GRACE: /* loca_recalim always false */ | |
5869 | task->tk_status = 0; | |
5870 | } | |
5871 | ||
5872 | if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { | |
5873 | nfs_restart_rpc(task, server->nfs_client); | |
5874 | return; | |
5875 | } | |
5876 | ||
5877 | if (task->tk_status == 0) | |
5878 | nfs_post_op_update_inode_force_wcc(data->args.inode, | |
5879 | data->res.fattr); | |
5880 | } | |
5881 | ||
5882 | static void nfs4_layoutcommit_release(void *calldata) | |
5883 | { | |
5884 | struct nfs4_layoutcommit_data *data = calldata; | |
5885 | ||
5886 | /* Matched by references in pnfs_set_layoutcommit */ | |
5887 | put_lseg(data->lseg); | |
5888 | put_rpccred(data->cred); | |
5889 | kfree(data); | |
5890 | } | |
5891 | ||
5892 | static const struct rpc_call_ops nfs4_layoutcommit_ops = { | |
5893 | .rpc_call_prepare = nfs4_layoutcommit_prepare, | |
5894 | .rpc_call_done = nfs4_layoutcommit_done, | |
5895 | .rpc_release = nfs4_layoutcommit_release, | |
5896 | }; | |
5897 | ||
5898 | int | |
ef311537 | 5899 | nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) |
863a3c6c AA |
5900 | { |
5901 | struct rpc_message msg = { | |
5902 | .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT], | |
5903 | .rpc_argp = &data->args, | |
5904 | .rpc_resp = &data->res, | |
5905 | .rpc_cred = data->cred, | |
5906 | }; | |
5907 | struct rpc_task_setup task_setup_data = { | |
5908 | .task = &data->task, | |
5909 | .rpc_client = NFS_CLIENT(data->args.inode), | |
5910 | .rpc_message = &msg, | |
5911 | .callback_ops = &nfs4_layoutcommit_ops, | |
5912 | .callback_data = data, | |
5913 | .flags = RPC_TASK_ASYNC, | |
5914 | }; | |
5915 | struct rpc_task *task; | |
5916 | int status = 0; | |
5917 | ||
5918 | dprintk("NFS: %4d initiating layoutcommit call. sync %d " | |
5919 | "lbw: %llu inode %lu\n", | |
5920 | data->task.tk_pid, sync, | |
5921 | data->args.lastbytewritten, | |
5922 | data->args.inode->i_ino); | |
5923 | ||
5924 | task = rpc_run_task(&task_setup_data); | |
5925 | if (IS_ERR(task)) | |
5926 | return PTR_ERR(task); | |
ef311537 | 5927 | if (sync == false) |
863a3c6c AA |
5928 | goto out; |
5929 | status = nfs4_wait_for_completion_rpc_task(task); | |
5930 | if (status != 0) | |
5931 | goto out; | |
5932 | status = task->tk_status; | |
5933 | out: | |
5934 | dprintk("%s: status %d\n", __func__, status); | |
5935 | rpc_put_task(task); | |
5936 | return status; | |
5937 | } | |
557134a3 AA |
5938 | #endif /* CONFIG_NFS_V4_1 */ |
5939 | ||
591d71cb | 5940 | struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = { |
7eff03ae | 5941 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, |
b79a4a1b | 5942 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, |
1da177e4 LT |
5943 | .recover_open = nfs4_open_reclaim, |
5944 | .recover_lock = nfs4_lock_reclaim, | |
591d71cb | 5945 | .establish_clid = nfs4_init_clientid, |
90a16617 | 5946 | .get_clid_cred = nfs4_get_setclientid_cred, |
1da177e4 LT |
5947 | }; |
5948 | ||
591d71cb AA |
5949 | #if defined(CONFIG_NFS_V4_1) |
5950 | struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = { | |
5951 | .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT, | |
5952 | .state_flag_bit = NFS_STATE_RECLAIM_REBOOT, | |
5953 | .recover_open = nfs4_open_reclaim, | |
5954 | .recover_lock = nfs4_lock_reclaim, | |
4d643d1d | 5955 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 5956 | .get_clid_cred = nfs4_get_exchange_id_cred, |
fce5c838 | 5957 | .reclaim_complete = nfs41_proc_reclaim_complete, |
591d71cb AA |
5958 | }; |
5959 | #endif /* CONFIG_NFS_V4_1 */ | |
5960 | ||
5961 | struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = { | |
5962 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, | |
5963 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, | |
5964 | .recover_open = nfs4_open_expired, | |
5965 | .recover_lock = nfs4_lock_expired, | |
5966 | .establish_clid = nfs4_init_clientid, | |
90a16617 | 5967 | .get_clid_cred = nfs4_get_setclientid_cred, |
591d71cb AA |
5968 | }; |
5969 | ||
5970 | #if defined(CONFIG_NFS_V4_1) | |
5971 | struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = { | |
7eff03ae | 5972 | .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE, |
b79a4a1b | 5973 | .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE, |
1da177e4 LT |
5974 | .recover_open = nfs4_open_expired, |
5975 | .recover_lock = nfs4_lock_expired, | |
4d643d1d | 5976 | .establish_clid = nfs41_init_clientid, |
b4b82607 | 5977 | .get_clid_cred = nfs4_get_exchange_id_cred, |
1da177e4 | 5978 | }; |
591d71cb | 5979 | #endif /* CONFIG_NFS_V4_1 */ |
1da177e4 | 5980 | |
29fba38b BH |
5981 | struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = { |
5982 | .sched_state_renewal = nfs4_proc_async_renew, | |
a7b72103 | 5983 | .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked, |
8e69514f | 5984 | .renew_lease = nfs4_proc_renew, |
29fba38b BH |
5985 | }; |
5986 | ||
5987 | #if defined(CONFIG_NFS_V4_1) | |
5988 | struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = { | |
5989 | .sched_state_renewal = nfs41_proc_async_sequence, | |
a7b72103 | 5990 | .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked, |
8e69514f | 5991 | .renew_lease = nfs4_proc_sequence, |
29fba38b BH |
5992 | }; |
5993 | #endif | |
5994 | ||
97dc1359 TM |
5995 | static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { |
5996 | .minor_version = 0, | |
5997 | .call_sync = _nfs4_call_sync, | |
e047a10c | 5998 | .validate_stateid = nfs4_validate_delegation_stateid, |
c48f4f35 TM |
5999 | .reboot_recovery_ops = &nfs40_reboot_recovery_ops, |
6000 | .nograce_recovery_ops = &nfs40_nograce_recovery_ops, | |
6001 | .state_renewal_ops = &nfs40_state_renewal_ops, | |
97dc1359 TM |
6002 | }; |
6003 | ||
6004 | #if defined(CONFIG_NFS_V4_1) | |
6005 | static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { | |
6006 | .minor_version = 1, | |
6007 | .call_sync = _nfs4_call_sync_session, | |
e047a10c | 6008 | .validate_stateid = nfs41_validate_delegation_stateid, |
c48f4f35 TM |
6009 | .reboot_recovery_ops = &nfs41_reboot_recovery_ops, |
6010 | .nograce_recovery_ops = &nfs41_nograce_recovery_ops, | |
6011 | .state_renewal_ops = &nfs41_state_renewal_ops, | |
97dc1359 TM |
6012 | }; |
6013 | #endif | |
6014 | ||
97dc1359 TM |
6015 | const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { |
6016 | [0] = &nfs_v4_0_minor_ops, | |
6017 | #if defined(CONFIG_NFS_V4_1) | |
6018 | [1] = &nfs_v4_1_minor_ops, | |
6019 | #endif | |
6020 | }; | |
6021 | ||
92e1d5be | 6022 | static const struct inode_operations nfs4_file_inode_operations = { |
6b3b5496 BF |
6023 | .permission = nfs_permission, |
6024 | .getattr = nfs_getattr, | |
6025 | .setattr = nfs_setattr, | |
64c2ce8b AK |
6026 | .getxattr = generic_getxattr, |
6027 | .setxattr = generic_setxattr, | |
6028 | .listxattr = generic_listxattr, | |
6029 | .removexattr = generic_removexattr, | |
6b3b5496 BF |
6030 | }; |
6031 | ||
509de811 | 6032 | const struct nfs_rpc_ops nfs_v4_clientops = { |
1da177e4 LT |
6033 | .version = 4, /* protocol version */ |
6034 | .dentry_ops = &nfs4_dentry_operations, | |
6035 | .dir_inode_ops = &nfs4_dir_inode_operations, | |
6b3b5496 | 6036 | .file_inode_ops = &nfs4_file_inode_operations, |
1da177e4 LT |
6037 | .getroot = nfs4_proc_get_root, |
6038 | .getattr = nfs4_proc_getattr, | |
6039 | .setattr = nfs4_proc_setattr, | |
2b3de441 | 6040 | .lookupfh = nfs4_proc_lookupfh, |
1da177e4 LT |
6041 | .lookup = nfs4_proc_lookup, |
6042 | .access = nfs4_proc_access, | |
6043 | .readlink = nfs4_proc_readlink, | |
1da177e4 LT |
6044 | .create = nfs4_proc_create, |
6045 | .remove = nfs4_proc_remove, | |
6046 | .unlink_setup = nfs4_proc_unlink_setup, | |
6047 | .unlink_done = nfs4_proc_unlink_done, | |
6048 | .rename = nfs4_proc_rename, | |
d3d4152a JL |
6049 | .rename_setup = nfs4_proc_rename_setup, |
6050 | .rename_done = nfs4_proc_rename_done, | |
1da177e4 LT |
6051 | .link = nfs4_proc_link, |
6052 | .symlink = nfs4_proc_symlink, | |
6053 | .mkdir = nfs4_proc_mkdir, | |
6054 | .rmdir = nfs4_proc_remove, | |
6055 | .readdir = nfs4_proc_readdir, | |
6056 | .mknod = nfs4_proc_mknod, | |
6057 | .statfs = nfs4_proc_statfs, | |
6058 | .fsinfo = nfs4_proc_fsinfo, | |
6059 | .pathconf = nfs4_proc_pathconf, | |
e9326dca | 6060 | .set_capabilities = nfs4_server_capabilities, |
1da177e4 LT |
6061 | .decode_dirent = nfs4_decode_dirent, |
6062 | .read_setup = nfs4_proc_read_setup, | |
ec06c096 | 6063 | .read_done = nfs4_read_done, |
1da177e4 | 6064 | .write_setup = nfs4_proc_write_setup, |
788e7a89 | 6065 | .write_done = nfs4_write_done, |
1da177e4 | 6066 | .commit_setup = nfs4_proc_commit_setup, |
788e7a89 | 6067 | .commit_done = nfs4_commit_done, |
1da177e4 | 6068 | .lock = nfs4_proc_lock, |
e50a1c2e | 6069 | .clear_acl_cache = nfs4_zap_acl_attr, |
7fe5c398 | 6070 | .close_context = nfs4_close_context, |
2b484297 | 6071 | .open_context = nfs4_atomic_open, |
45a52a02 | 6072 | .init_client = nfs4_init_client, |
5a5ea0d4 | 6073 | .secinfo = nfs4_proc_secinfo, |
1da177e4 LT |
6074 | }; |
6075 | ||
64c2ce8b AK |
6076 | static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = { |
6077 | .prefix = XATTR_NAME_NFSV4_ACL, | |
6078 | .list = nfs4_xattr_list_nfs4_acl, | |
6079 | .get = nfs4_xattr_get_nfs4_acl, | |
6080 | .set = nfs4_xattr_set_nfs4_acl, | |
6081 | }; | |
6082 | ||
6083 | const struct xattr_handler *nfs4_xattr_handlers[] = { | |
6084 | &nfs4_xattr_nfs4_acl_handler, | |
6085 | NULL | |
6086 | }; | |
6087 | ||
1da177e4 LT |
6088 | /* |
6089 | * Local variables: | |
6090 | * c-basic-offset: 8 | |
6091 | * End: | |
6092 | */ |